diff options
Diffstat (limited to 'ext/pybind11')
160 files changed, 15675 insertions, 7245 deletions
diff --git a/ext/pybind11/.appveyor.yml b/ext/pybind11/.appveyor.yml index b908d0763..b150f1014 100644 --- a/ext/pybind11/.appveyor.yml +++ b/ext/pybind11/.appveyor.yml @@ -3,38 +3,64 @@ image: - Visual Studio 2017 - Visual Studio 2015 test: off +build: + parallel: true platform: - x64 - x86 environment: matrix: + - PYTHON: 36 + CPP: 14 + CONFIG: Debug + - PYTHON: 27 + CPP: 14 + CONFIG: Debug - CONDA: 36 - - CONDA: 27 + CPP: latest + CONFIG: Release matrix: - fast_finish: true # Stop remaining jobs after a job failure + exclude: + - image: Visual Studio 2015 + platform: x86 + - image: Visual Studio 2015 + CPP: latest + - image: Visual Studio 2017 + CPP: latest + platform: x86 install: - ps: | if ($env:PLATFORM -eq "x64") { $env:CMAKE_ARCH = "x64" } - if ($env:APPVEYOR_JOB_NAME -like "*Visual Studio 2017*") { $env:CMAKE_GENERATOR = "Visual Studio 15 2017" } - else { $env:CMAKE_GENERATOR = "Visual Studio 14 2015" } + if ($env:APPVEYOR_JOB_NAME -like "*Visual Studio 2017*") { + $env:CMAKE_GENERATOR = "Visual Studio 15 2017" + $env:CMAKE_INCLUDE_PATH = "C:\Libraries\boost_1_64_0" + } else { + $env:CMAKE_GENERATOR = "Visual Studio 14 2015" + } if ($env:PYTHON) { if ($env:PLATFORM -eq "x64") { $env:PYTHON = "$env:PYTHON-x64" } $env:PATH = "C:\Python$env:PYTHON\;C:\Python$env:PYTHON\Scripts\;$env:PATH" pip install --disable-pip-version-check --user --upgrade pip wheel - pip install pytest numpy scipy + pip install pytest numpy } elseif ($env:CONDA) { if ($env:CONDA -eq "27") { $env:CONDA = "" } if ($env:PLATFORM -eq "x64") { $env:CONDA = "$env:CONDA-x64" } $env:PATH = "C:\Miniconda$env:CONDA\;C:\Miniconda$env:CONDA\Scripts\;$env:PATH" + $env:PYTHONHOME = "C:\Miniconda$env:CONDA" conda install -y -q pytest numpy scipy } - ps: | - Start-FileDownload 'http://bitbucket.org/eigen/eigen/get/3.3.0.zip' - 7z x 3.3.0.zip -y > $null - $env:CMAKE_INCLUDE_PATH = "eigen-eigen-26667be4f70b" + Start-FileDownload 'http://bitbucket.org/eigen/eigen/get/3.3.3.zip' + 7z x 3.3.3.zip -y > $null + $env:CMAKE_INCLUDE_PATH = "eigen-eigen-67e894c6cd8f;$env:CMAKE_INCLUDE_PATH" build_script: -- cmake -G "%CMAKE_GENERATOR%" -A "%CMAKE_ARCH%" -DPYBIND11_WERROR=ON +- cmake -G "%CMAKE_GENERATOR%" -A "%CMAKE_ARCH%" + -DPYBIND11_CPP_STANDARD=/std:c++%CPP% + -DPYBIND11_WERROR=ON + -DDOWNLOAD_CATCH=ON + -DCMAKE_SUPPRESS_REGENERATION=1 - set MSBuildLogger="C:\Program Files\AppVeyor\BuildAgent\Appveyor.MSBuildLogger.dll" -- cmake --build . --config Release --target pytest -- /v:m /logger:%MSBuildLogger% -- cmake --build . --config Release --target test_cmake_build -- /v:m /logger:%MSBuildLogger% -on_failure: if exist "tests\test_cmake_build" type tests\test_cmake_build\*.log +- cmake --build . --config %CONFIG% --target pytest -- /m /v:m /logger:%MSBuildLogger% +- cmake --build . --config %CONFIG% --target cpptest -- /m /v:m /logger:%MSBuildLogger% +- if "%CPP%"=="latest" (cmake --build . --config %CONFIG% --target test_cmake_build -- /m /v:m /logger:%MSBuildLogger%) +on_failure: if exist "tests\test_cmake_build" type tests\test_cmake_build\*.log* diff --git a/ext/pybind11/.travis.yml b/ext/pybind11/.travis.yml index a3e99a003..2853ac7ad 100644 --- a/ext/pybind11/.travis.yml +++ b/ext/pybind11/.travis.yml @@ -1,51 +1,84 @@ language: cpp +dist: trusty sudo: false matrix: include: + # This config does a few things: + # - Checks C++ and Python code styles (check-style.sh and flake8). + # - Makes sure sphinx can build the docs without any errors or warnings. + # - Tests setup.py sdist and install (all header files should be present). + # - Makes sure that everything still works without optional deps (numpy/scipy/eigen) and + # also tests the automatic discovery functions in CMake (Python version, C++ standard). + - os: linux + env: STYLE DOCS PIP + cache: false + before_install: + - pyenv global $(pyenv whence 2to3) # activate all python versions + - PY_CMD=python3 + - $PY_CMD -m pip install --user --upgrade pip wheel + install: + - $PY_CMD -m pip install --user --upgrade sphinx sphinx_rtd_theme breathe flake8 pep8-naming pytest + - curl -fsSL ftp://ftp.stack.nl/pub/users/dimitri/doxygen-1.8.12.linux.bin.tar.gz | tar xz + - export PATH="$PWD/doxygen-1.8.12/bin:$PATH" + script: + - tools/check-style.sh + - flake8 + - $PY_CMD -m sphinx -W -b html docs docs/.build + - | + # Make sure setup.py distributes and installs all the headers + $PY_CMD setup.py sdist + $PY_CMD -m pip install --user -U ./dist/* + installed=$($PY_CMD -c "import pybind11; print(pybind11.get_include(True) + '/pybind11')") + diff -rq $installed ./include/pybind11 + - | + # Barebones build + cmake -DCMAKE_BUILD_TYPE=Debug -DPYBIND11_WERROR=ON -DDOWNLOAD_CATCH=ON + make pytest -j 2 + make cpptest -j 2 + # The following are regular test configurations, including optional dependencies. + # With regard to each other they differ in Python version, C++ standard and compiler. - os: linux env: PYTHON=2.7 CPP=11 GCC=4.8 addons: apt: - sources: [ubuntu-toolchain-r-test, kubuntu-backports] - packages: [g++-4.8, cmake] + packages: [cmake=2.\*, cmake-data=2.\*] - os: linux - env: PYTHON=3.5 CPP=11 GCC=4.8 + env: PYTHON=3.6 CPP=11 GCC=4.8 addons: apt: - sources: [ubuntu-toolchain-r-test, kubuntu-backports, deadsnakes] - packages: [g++-4.8, cmake, python3.5-dev] + sources: [deadsnakes] + packages: [python3.6-dev python3.6-venv, cmake=2.\*, cmake-data=2.\*] - sudo: true services: docker - env: PYTHON=2.7 CPP=14 GCC=6 + env: PYTHON=2.7 CPP=14 GCC=6 CMAKE=1 - sudo: true services: docker env: PYTHON=3.5 CPP=14 GCC=6 DEBUG=1 - sudo: true services: docker - env: PYTHON=3.5 CPP=17 GCC=7 - - sudo: true - services: docker - env: PYTHON=3.5 CPP=17 CLANG=4.0 + env: PYTHON=3.6 CPP=17 GCC=7 + - os: linux + env: PYTHON=3.6 CPP=17 CLANG=5.0 + addons: + apt: + sources: [deadsnakes, llvm-toolchain-trusty-5.0, ubuntu-toolchain-r-test] + packages: [python3.6-dev python3.6-venv clang-5.0 llvm-5.0-dev, lld-5.0] - os: osx osx_image: xcode7.3 - env: PYTHON=2.7 CPP=14 CLANG + env: PYTHON=2.7 CPP=14 CLANG CMAKE=1 - os: osx - osx_image: xcode7.3 - env: PYTHON=3.6 CPP=14 CLANG + osx_image: xcode8.3 + env: PYTHON=3.6 CPP=14 CLANG DEBUG=1 # Test a PyPy 2.7 build - os: linux - dist: trusty - env: PYPY=5.7 PYTHON=2.7 CPP=11 GCC=4.8 + env: PYPY=5.8 PYTHON=2.7 CPP=11 GCC=4.8 addons: apt: - packages: [g++-4.8, cmake] - - sudo: true - services: docker - env: ARCH=i386 PYTHON=3.5 CPP=14 GCC=6 - # This next one does a make install *before* testing, then builds the tests against the installed version: + packages: [libblas-dev, liblapack-dev, gfortran] + # Build in 32-bit mode and tests against the CMake-installed version - sudo: true services: docker - env: PYTHON=3.5 CPP=14 CLANG=3.9 INSTALL=1 + env: ARCH=i386 PYTHON=3.5 CPP=14 GCC=6 INSTALL=1 script: - | $SCRIPT_RUN_PREFIX sh -c "set -e @@ -55,140 +88,125 @@ matrix: mkdir /build-tests && cd /build-tests cmake ../pybind11-tests ${CMAKE_EXTRA_ARGS} -DPYBIND11_WERROR=ON make pytest -j 2" - # A barebones build makes sure everything still works without optional deps (numpy/scipy/eigen) - # and also tests the automatic discovery functions in CMake (Python version, C++ standard). - - os: linux - env: BAREBONES - addons: - apt: - sources: [ubuntu-toolchain-r-test, kubuntu-backports] - packages: [g++-4.8, cmake] - install: pip install pytest - # Documentation build: - - os: linux - language: docs - env: DOCS STYLE LINT - install: - - pip install --upgrade sphinx sphinx_rtd_theme flake8 pep8-naming - - | - curl -fsSL ftp://ftp.stack.nl/pub/users/dimitri/doxygen-1.8.12.linux.bin.tar.gz | tar xz - export PATH="$PWD/doxygen-1.8.12/bin:$PATH" - pip install https://github.com/michaeljones/breathe/archive/master.zip - script: - - make -C docs html SPHINX_OPTIONS=-W - - tools/check-style.sh - - flake8 - allow_failures: - - env: PYTHON=3.5 CPP=17 GCC=7 - - env: PYTHON=3.5 CPP=17 CLANG=4.0 cache: directories: - - $HOME/.cache/pip - - $HOME/Library/Caches/pip + - $HOME/.local/bin + - $HOME/.local/lib + - $HOME/.local/include + - $HOME/Library/Python before_install: - | # Configure build variables if [ "$TRAVIS_OS_NAME" = "linux" ]; then if [ -n "$CLANG" ]; then - export CXX=clang++-$CLANG CC=clang-$CLANG COMPILER_PACKAGES="clang-$CLANG llvm-$CLANG-dev" - if [ "$CLANG" = "4.0" ]; then export CXXFLAGS="-stdlib=libc++"; fi + export CXX=clang++-$CLANG CC=clang-$CLANG + COMPILER_PACKAGES="clang-$CLANG llvm-$CLANG-dev" else - if [ -z "$GCC" ]; then export GCC=4.8 - else export COMPILER_PACKAGES=g++-$GCC + if [ -z "$GCC" ]; then GCC=4.8 + else COMPILER_PACKAGES=g++-$GCC fi export CXX=g++-$GCC CC=gcc-$GCC fi - if [ "$CLANG" = "4.0" ]; then export DOCKER=debian:sid - elif [ "$GCC" = "6" ] || [ -n "$CLANG" ]; then export DOCKER=${ARCH:+$ARCH/}debian:testing - elif [ "$GCC" = "7" ]; then export DOCKER=debian:experimental APT_GET_EXTRA="-t experimental" + if [ "$GCC" = "6" ]; then DOCKER=${ARCH:+$ARCH/}debian:stretch + elif [ "$GCC" = "7" ]; then DOCKER=debian:buster fi elif [ "$TRAVIS_OS_NAME" = "osx" ]; then export CXX=clang++ CC=clang; fi - if [ -n "$CPP" ]; then export CPP=-std=c++$CPP; fi - if [ "${PYTHON:0:1}" = "3" ]; then export PY=3; fi - if [ "$PYPY" = "5.7" ]; then - curl -fSL https://bitbucket.org/pypy/pypy/downloads/pypy2-v5.7.0-linux64.tar.bz2 | tar -xj - export PYPY_BINARY=$(echo `pwd`/pypy2-v5.7.0-linux64/bin/pypy) - export CMAKE_EXTRA_ARGS="-DPYTHON_EXECUTABLE:FILEPATH=$PYPY_BINARY" - fi - if [ -n "$DEBUG" ]; then export CMAKE_EXTRA_ARGS="-DCMAKE_BUILD_TYPE=Debug"; fi + if [ -n "$CPP" ]; then CPP=-std=c++$CPP; fi + if [ "${PYTHON:0:1}" = "3" ]; then PY=3; fi + if [ -n "$DEBUG" ]; then CMAKE_EXTRA_ARGS="${CMAKE_EXTRA_ARGS} -DCMAKE_BUILD_TYPE=Debug"; fi - | # Initialize environment - if [ -n "$PYPY" ]; then - $PYPY_BINARY -m ensurepip - $PYPY_BINARY -m pip install pytest - elif [ -n "$DOCKER" ]; then + set -e + if [ -n "$DOCKER" ]; then docker pull $DOCKER - # Disable LTO with gcc until gcc 79296 is fixed: - if [ -n "$GCC" ]; then export CMAKE_EXTRA_ARGS="${CMAKE_EXTRA_ARGS} -DPYBIND11_LTO_CXX_FLAGS="; fi - export containerid=$(docker run --detach --tty \ + containerid=$(docker run --detach --tty \ --volume="$PWD":/pybind11 --workdir=/pybind11 \ - --env="CXXFLAGS=$CXXFLAGS" \ --env="CC=$CC" --env="CXX=$CXX" --env="DEBIAN_FRONTEND=$DEBIAN_FRONTEND" \ --env=GCC_COLORS=\ \ $DOCKER) - export SCRIPT_RUN_PREFIX="docker exec --tty $containerid" + SCRIPT_RUN_PREFIX="docker exec --tty $containerid" $SCRIPT_RUN_PREFIX sh -c 'for s in 0 15; do sleep $s; apt-get update && apt-get -qy dist-upgrade && break; done' - # gcc-7 currently generates warnings; some are upstream bugs, so just turn off -Werror for now - if [ "$GCC" = "7" ]; then WERROR=off; fi else - if [ "$TRAVIS_OS_NAME" = "linux" ]; then - pip install --user --upgrade pip virtualenv - virtualenv -p python$PYTHON venv - elif [ "$TRAVIS_OS_NAME" = "osx" ]; then - if [ "$PY" = "3" ]; then - brew update; brew install python$PY; - else - curl -fsSL -O https://bootstrap.pypa.io/get-pip.py - sudo -H python get-pip.py + if [ "$PYPY" = "5.8" ]; then + curl -fSL https://bitbucket.org/pypy/pypy/downloads/pypy2-v5.8.0-linux64.tar.bz2 | tar xj + PY_CMD=$(echo `pwd`/pypy2-v5.8.0-linux64/bin/pypy) + CMAKE_EXTRA_ARGS="${CMAKE_EXTRA_ARGS} -DPYTHON_EXECUTABLE:FILEPATH=$PY_CMD" + else + PY_CMD=python$PYTHON + if [ "$TRAVIS_OS_NAME" = "osx" ]; then + if [ "$PY" = "3" ]; then + brew install python$PY; + else + curl -fsSL https://bootstrap.pypa.io/get-pip.py | $PY_CMD - --user + fi fi - pip$PY install --user --upgrade pip virtualenv - python$PY -m virtualenv venv fi - source venv/bin/activate + if [ "$PY" = 3 ] || [ -n "$PYPY" ]; then + $PY_CMD -m ensurepip --user + fi + $PY_CMD -m pip install --user --upgrade pip wheel fi + set +e install: - | # Install dependencies + set -e if [ -n "$DOCKER" ]; then if [ -n "$DEBUG" ]; then - PY_DEBUG="python$PY-dbg python$PY-scipy-dbg" - export CMAKE_EXTRA_ARGS="${CMAKE_EXTRA_ARGS} -DPYTHON_EXECUTABLE=/usr/bin/python${PYTHON}dm" + PY_DEBUG="python$PYTHON-dbg python$PY-scipy-dbg" + CMAKE_EXTRA_ARGS="${CMAKE_EXTRA_ARGS} -DPYTHON_EXECUTABLE=/usr/bin/python${PYTHON}dm" fi $SCRIPT_RUN_PREFIX sh -c "for s in 0 15; do sleep \$s; \ - apt-get -qy --no-install-recommends $APT_GET_EXTRA install \ - $PY_DEBUG python$PY-dev python$PY-pytest python$PY-scipy \ - libeigen3-dev cmake make ${COMPILER_PACKAGES} && break; done" - - if [ "$CLANG" = "4.0" ]; then - # Neither debian nor llvm provide a libc++ deb; luckily it's fairly quick - # to build and install, so do it ourselves: - git clone --depth=1 https://github.com/llvm-mirror/llvm.git llvm-source - git clone https://github.com/llvm-mirror/libcxx.git llvm-source/projects/libcxx -b release_40 - git clone https://github.com/llvm-mirror/libcxxabi.git llvm-source/projects/libcxxabi -b release_40 - $SCRIPT_RUN_PREFIX sh -c "mkdir llvm-build && cd llvm-build && \ - CXXFLAGS= cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=/usr ../llvm-source && \ - make -j2 install-cxxabi install-cxx && \ - cp -a include/c++/v1/*cxxabi*.h /usr/include/c++/v1" + apt-get -qy --no-install-recommends install \ + $PY_DEBUG python$PYTHON-dev python$PY-pytest python$PY-scipy \ + libeigen3-dev libboost-dev cmake make ${COMPILER_PACKAGES} && break; done" + else - if [ "$CPP" = "-std=c++17" ]; then export CPP="-std=c++1z"; fi + if [ "$CLANG" = "5.0" ]; then + if ! [ -d ~/.local/include/c++/v1 ]; then + # Neither debian nor llvm provide a libc++ 5.0 deb; luckily it's fairly quick + # to build, install (and cache), so do it ourselves: + git clone --depth=1 https://github.com/llvm-mirror/llvm.git llvm-source + git clone https://github.com/llvm-mirror/libcxx.git llvm-source/projects/libcxx -b release_50 + git clone https://github.com/llvm-mirror/libcxxabi.git llvm-source/projects/libcxxabi -b release_50 + mkdir llvm-build && cd llvm-build + # Building llvm requires a newer cmake than is provided by the trusty container: + CMAKE_VER=cmake-3.8.0-Linux-x86_64 + curl https://cmake.org/files/v3.8/$CMAKE_VER.tar.gz | tar xz + ./$CMAKE_VER/bin/cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=~/.local ../llvm-source + make -j2 install-cxxabi install-cxx + cp -a include/c++/v1/*cxxabi*.h ~/.local/include/c++/v1 + cd .. + fi + export CXXFLAGS="-isystem $HOME/.local/include/c++/v1 -stdlib=libc++" + export LDFLAGS="-L$HOME/.local/lib -fuse-ld=lld-$CLANG" + export LD_LIBRARY_PATH="$HOME/.local/lib${LD_LIBRARY_PATH:+:$LD_LIBRARY_PATH}" + if [ "$CPP" = "-std=c++17" ]; then CPP="-std=c++1z"; fi fi - elif [ -z "$PYPY" ]; then - pip install numpy scipy pytest - wget -q -O eigen.tar.gz https://bitbucket.org/eigen/eigen/get/3.3.0.tar.gz + export NPY_NUM_BUILD_JOBS=2 + echo "Installing pytest, numpy, scipy..." + ${PYPY:+travis_wait 30} $PY_CMD -m pip install --user --upgrade pytest numpy scipy \ + ${PYPY:+--extra-index-url https://imaginary.ca/trusty-pypi} + echo "done." + + wget -q -O eigen.tar.gz https://bitbucket.org/eigen/eigen/get/3.3.3.tar.gz tar xzf eigen.tar.gz - export CMAKE_EXTRA_ARGS="${CMAKE_EXTRA_ARGS} -DCMAKE_INCLUDE_PATH=$PWD/eigen-eigen-26667be4f70b" + export CMAKE_INCLUDE_PATH="${CMAKE_INCLUDE_PATH:+:}$PWD/eigen-eigen-67e894c6cd8f" fi + set +e script: - $SCRIPT_RUN_PREFIX cmake ${CMAKE_EXTRA_ARGS} -DPYBIND11_PYTHON_VERSION=$PYTHON -DPYBIND11_CPP_STANDARD=$CPP -DPYBIND11_WERROR=${WERROR:-ON} + -DDOWNLOAD_CATCH=ON - $SCRIPT_RUN_PREFIX make pytest -j 2 -- $SCRIPT_RUN_PREFIX make test_cmake_build -after_failure: cat tests/test_cmake_build/*.log +- $SCRIPT_RUN_PREFIX make cpptest -j 2 +- if [ -n "$CMAKE" ]; then $SCRIPT_RUN_PREFIX make test_cmake_build; fi +after_failure: cat tests/test_cmake_build/*.log* after_script: - if [ -n "$DOCKER" ]; then docker stop "$containerid"; docker rm "$containerid"; fi diff --git a/ext/pybind11/CMakeLists.txt b/ext/pybind11/CMakeLists.txt index 16f1d67f1..4280ba742 100644 --- a/ext/pybind11/CMakeLists.txt +++ b/ext/pybind11/CMakeLists.txt @@ -12,7 +12,12 @@ if (POLICY CMP0048) cmake_policy(SET CMP0048 NEW) endif() -project(pybind11) +# CMake versions < 3.4.0 do not support try_compile/pthread checks without C as active language. +if(CMAKE_VERSION VERSION_LESS 3.4.0) + project(pybind11) +else() + project(pybind11 CXX) +endif() # Check if pybind11 is being used directly or via add_subdirectory set(PYBIND11_MASTER_PROJECT OFF) @@ -34,16 +39,23 @@ set(PYTHON_LIBRARIES ${PYTHON_LIBRARIES} CACHE INTERNAL "") set(PYTHON_MODULE_PREFIX ${PYTHON_MODULE_PREFIX} CACHE INTERNAL "") set(PYTHON_MODULE_EXTENSION ${PYTHON_MODULE_EXTENSION} CACHE INTERNAL "") +# NB: when adding a header don't forget to also add it to setup.py set(PYBIND11_HEADERS + include/pybind11/detail/class.h + include/pybind11/detail/common.h + include/pybind11/detail/descr.h + include/pybind11/detail/init.h + include/pybind11/detail/internals.h + include/pybind11/detail/typeid.h include/pybind11/attr.h + include/pybind11/buffer_info.h include/pybind11/cast.h include/pybind11/chrono.h - include/pybind11/class_support.h include/pybind11/common.h include/pybind11/complex.h - include/pybind11/descr.h include/pybind11/options.h include/pybind11/eigen.h + include/pybind11/embed.h include/pybind11/eval.h include/pybind11/functional.h include/pybind11/numpy.h @@ -52,7 +64,6 @@ set(PYBIND11_HEADERS include/pybind11/pytypes.h include/pybind11/stl.h include/pybind11/stl_bind.h - include/pybind11/typeid.h ) string(REPLACE "include/" "${CMAKE_CURRENT_SOURCE_DIR}/include/" PYBIND11_HEADERS "${PYBIND11_HEADERS}") @@ -65,7 +76,7 @@ include(GNUInstallDirs) include(CMakePackageConfigHelpers) # extract project version from source -file(STRINGS "${PYBIND11_INCLUDE_DIR}/pybind11/common.h" pybind11_version_defines +file(STRINGS "${PYBIND11_INCLUDE_DIR}/pybind11/detail/common.h" pybind11_version_defines REGEX "#define PYBIND11_VERSION_(MAJOR|MINOR|PATCH) ") foreach(ver ${pybind11_version_defines}) if (ver MATCHES "#define PYBIND11_VERSION_(MAJOR|MINOR|PATCH) +([^ ]+)$") @@ -82,32 +93,46 @@ endif() if(NOT (CMAKE_VERSION VERSION_LESS 3.0)) # CMake >= 3.0 # Build an interface library target: + add_library(pybind11 INTERFACE) + add_library(pybind11::pybind11 ALIAS pybind11) # to match exported target + target_include_directories(pybind11 INTERFACE $<BUILD_INTERFACE:${PYBIND11_INCLUDE_DIR}> + $<BUILD_INTERFACE:${PYTHON_INCLUDE_DIRS}> + $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>) + target_compile_options(pybind11 INTERFACE $<BUILD_INTERFACE:${PYBIND11_CPP_STANDARD}>) + add_library(module INTERFACE) - target_include_directories(module INTERFACE $<BUILD_INTERFACE:${PYBIND11_INCLUDE_DIR}> - $<BUILD_INTERFACE:${PYTHON_INCLUDE_DIRS}> - $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>) + add_library(pybind11::module ALIAS module) + if(NOT MSVC) + target_compile_options(module INTERFACE -fvisibility=hidden) + endif() + target_link_libraries(module INTERFACE pybind11::pybind11) if(WIN32 OR CYGWIN) target_link_libraries(module INTERFACE $<BUILD_INTERFACE:${PYTHON_LIBRARIES}>) elseif(APPLE) target_link_libraries(module INTERFACE "-undefined dynamic_lookup") endif() - target_compile_options(module INTERFACE $<BUILD_INTERFACE:${PYBIND11_CPP_STANDARD}>) - add_library(pybind11::module ALIAS module) # to match exported target + add_library(embed INTERFACE) + add_library(pybind11::embed ALIAS embed) + target_link_libraries(embed INTERFACE pybind11::pybind11 $<BUILD_INTERFACE:${PYTHON_LIBRARIES}>) endif() if (PYBIND11_INSTALL) - install(FILES ${PYBIND11_HEADERS} - DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/pybind11) + install(DIRECTORY ${PYBIND11_INCLUDE_DIR}/pybind11 DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}) # GNUInstallDirs "DATADIR" wrong here; CMake search path wants "share". set(PYBIND11_CMAKECONFIG_INSTALL_DIR "share/cmake/${PROJECT_NAME}" CACHE STRING "install path for pybind11Config.cmake") configure_package_config_file(tools/${PROJECT_NAME}Config.cmake.in "${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}Config.cmake" INSTALL_DESTINATION ${PYBIND11_CMAKECONFIG_INSTALL_DIR}) + # Remove CMAKE_SIZEOF_VOID_P from ConfigVersion.cmake since the library does + # not depend on architecture specific settings or libraries. + set(_PYBIND11_CMAKE_SIZEOF_VOID_P ${CMAKE_SIZEOF_VOID_P}) + unset(CMAKE_SIZEOF_VOID_P) write_basic_package_version_file(${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}ConfigVersion.cmake VERSION ${${PROJECT_NAME}_VERSION} COMPATIBILITY AnyNewerVersion) + set(CMAKE_SIZEOF_VOID_P ${_PYBIND11_CMAKE_SIZEOF_VOID_P}) install(FILES ${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}Config.cmake ${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}ConfigVersion.cmake tools/FindPythonLibsNew.cmake @@ -115,10 +140,16 @@ if (PYBIND11_INSTALL) DESTINATION ${PYBIND11_CMAKECONFIG_INSTALL_DIR}) if(NOT (CMAKE_VERSION VERSION_LESS 3.0)) - install(TARGETS module - EXPORT "${PROJECT_NAME}Targets") - install(EXPORT "${PROJECT_NAME}Targets" - NAMESPACE "${PROJECT_NAME}::" - DESTINATION ${PYBIND11_CMAKECONFIG_INSTALL_DIR}) + if(NOT PYBIND11_EXPORT_NAME) + set(PYBIND11_EXPORT_NAME "${PROJECT_NAME}Targets") + endif() + + install(TARGETS pybind11 module embed + EXPORT "${PYBIND11_EXPORT_NAME}") + if(PYBIND11_MASTER_PROJECT) + install(EXPORT "${PYBIND11_EXPORT_NAME}" + NAMESPACE "${PROJECT_NAME}::" + DESTINATION ${PYBIND11_CMAKECONFIG_INSTALL_DIR}) + endif() endif() endif() diff --git a/ext/pybind11/ISSUE_TEMPLATE.md b/ext/pybind11/ISSUE_TEMPLATE.md index 2e5f920f8..75df39981 100644 --- a/ext/pybind11/ISSUE_TEMPLATE.md +++ b/ext/pybind11/ISSUE_TEMPLATE.md @@ -1,5 +1,4 @@ Make sure you've completed the following steps before submitting your issue -- thank you! -You can remove this template text afterward. 1. Check if your question has already been answered in the [FAQ](http://pybind11.readthedocs.io/en/latest/faq.html) section. 2. Make sure you've read the [documentation](http://pybind11.readthedocs.io/en/latest/). Your issue may be addressed there. @@ -7,11 +6,12 @@ You can remove this template text afterward. 4. If you have a genuine bug report or a more complex question which is not answered in the previous items (or not suitable for chat), please fill in the details below. 5. Include a self-contained and minimal piece of code that reproduces the problem. If that's not possible, try to make the description as clear as possible. +*After reading, remove this checklist and the template text in parentheses below.* -#### Issue description +## Issue description (Provide a short description, state the expected behavior and what actually happens.) -#### Reproducible example code +## Reproducible example code (The code should be minimal, have no external dependencies, isolate the function(s) that cause breakage. Submit matched and complete C++ and Python snippets that can be easily compiled and run to diagnose the issue.) diff --git a/ext/pybind11/MANIFEST.in b/ext/pybind11/MANIFEST.in index aa51d0110..6e57baeee 100644 --- a/ext/pybind11/MANIFEST.in +++ b/ext/pybind11/MANIFEST.in @@ -1,2 +1,2 @@ -include include/pybind11/*.h +recursive-include include/pybind11 *.h include LICENSE README.md CONTRIBUTING.md diff --git a/ext/pybind11/docs/Doxyfile b/ext/pybind11/docs/Doxyfile index 4dc8bf059..1b9d1297c 100644 --- a/ext/pybind11/docs/Doxyfile +++ b/ext/pybind11/docs/Doxyfile @@ -1,5 +1,6 @@ PROJECT_NAME = pybind11 INPUT = ../include/pybind11/ +RECURSIVE = YES GENERATE_HTML = NO GENERATE_LATEX = NO diff --git a/ext/pybind11/docs/advanced/cast/custom.rst b/ext/pybind11/docs/advanced/cast/custom.rst index c854e7fcd..e4f99ac5b 100644 --- a/ext/pybind11/docs/advanced/cast/custom.rst +++ b/ext/pybind11/docs/advanced/cast/custom.rst @@ -78,6 +78,12 @@ type is explicitly allowed. }; }} // namespace pybind11::detail +.. note:: + + A ``type_caster<T>`` defined with ``PYBIND11_TYPE_CASTER(T, ...)`` requires + that ``T`` is default-constructible (``value`` is first default constructed + and then ``load()`` assigns to it). + .. warning:: When using custom type casters, it's important to declare them consistently diff --git a/ext/pybind11/docs/advanced/cast/eigen.rst b/ext/pybind11/docs/advanced/cast/eigen.rst index 5b0b08ca6..acdb51de6 100644 --- a/ext/pybind11/docs/advanced/cast/eigen.rst +++ b/ext/pybind11/docs/advanced/cast/eigen.rst @@ -57,7 +57,7 @@ expected: .. code-block:: cpp - void scale_by_2(Eigen::Ref<Eigen::VectorXd> m) { + void scale_by_2(Eigen::Ref<Eigen::VectorXd> v) { v *= 2; } @@ -252,11 +252,11 @@ copying to take place: using namespace pybind11::literals; // for "arg"_a py::class_<MyClass>(m, "MyClass") // ... other class definitions - .def("some_method", &MyClass::some_method, py::arg().nocopy()); + .def("some_method", &MyClass::some_method, py::arg().noconvert()); m.def("some_function", &some_function, - "big"_a.nocopy(), // <- Don't allow copying for this arg - "small"_a // <- This one can be copied if needed + "big"_a.noconvert(), // <- Don't allow copying for this arg + "small"_a // <- This one can be copied if needed ); With the above binding code, attempting to call the the ``some_method(m)`` diff --git a/ext/pybind11/docs/advanced/cast/functional.rst b/ext/pybind11/docs/advanced/cast/functional.rst index 5d0a01d13..d9b460575 100644 --- a/ext/pybind11/docs/advanced/cast/functional.rst +++ b/ext/pybind11/docs/advanced/cast/functional.rst @@ -56,14 +56,10 @@ trivial to generate binding code for all of these functions. #include <pybind11/functional.h> - PYBIND11_PLUGIN(example) { - py::module m("example", "pybind11 example plugin"); - + PYBIND11_MODULE(example, m) { m.def("func_arg", &func_arg); m.def("func_ret", &func_ret); m.def("func_cpp", &func_cpp); - - return m.ptr(); } The following interactive session shows how to call them from Python. diff --git a/ext/pybind11/docs/advanced/cast/overview.rst b/ext/pybind11/docs/advanced/cast/overview.rst index 54c11a90a..2ac7d3009 100644 --- a/ext/pybind11/docs/advanced/cast/overview.rst +++ b/ext/pybind11/docs/advanced/cast/overview.rst @@ -116,6 +116,9 @@ as arguments and return values, refer to the section on binding :ref:`classes`. +------------------------------------+---------------------------+-------------------------------+ | ``std::wstring`` | STL dynamic wide string | :file:`pybind11/pybind11.h` | +------------------------------------+---------------------------+-------------------------------+ +| ``std::string_view``, | STL C++17 string views | :file:`pybind11/pybind11.h` | +| ``std::u16string_view``, etc. | | | ++------------------------------------+---------------------------+-------------------------------+ | ``std::pair<T1, T2>`` | Pair of two custom types | :file:`pybind11/pybind11.h` | +------------------------------------+---------------------------+-------------------------------+ | ``std::tuple<...>`` | Arbitrary tuple of types | :file:`pybind11/pybind11.h` | @@ -144,6 +147,8 @@ as arguments and return values, refer to the section on binding :ref:`classes`. +------------------------------------+---------------------------+-------------------------------+ | ``std::experimental::optional<T>`` | STL optional type (exp.) | :file:`pybind11/stl.h` | +------------------------------------+---------------------------+-------------------------------+ +| ``std::variant<...>`` | Type-safe union (C++17) | :file:`pybind11/stl.h` | ++------------------------------------+---------------------------+-------------------------------+ | ``std::function<...>`` | STL polymorphic function | :file:`pybind11/functional.h` | +------------------------------------+---------------------------+-------------------------------+ | ``std::chrono::duration<...>`` | STL time duration | :file:`pybind11/chrono.h` | diff --git a/ext/pybind11/docs/advanced/cast/stl.rst b/ext/pybind11/docs/advanced/cast/stl.rst index c76da5ca1..3f30c0290 100644 --- a/ext/pybind11/docs/advanced/cast/stl.rst +++ b/ext/pybind11/docs/advanced/cast/stl.rst @@ -23,9 +23,62 @@ next sections for more details and alternative approaches that avoid this. .. seealso:: - The file :file:`tests/test_python_types.cpp` contains a complete + The file :file:`tests/test_stl.cpp` contains a complete example that demonstrates how to pass STL data types in more detail. +.. _cpp17_container_casters: + +C++17 library containers +======================== + +The :file:`pybind11/stl.h` header also includes support for ``std::optional<>`` +and ``std::variant<>``. These require a C++17 compiler and standard library. +In C++14 mode, ``std::experimental::optional<>`` is supported if available. + +Various versions of these containers also exist for C++11 (e.g. in Boost). +pybind11 provides an easy way to specialize the ``type_caster`` for such +types: + +.. code-block:: cpp + + // `boost::optional` as an example -- can be any `std::optional`-like container + namespace pybind11 { namespace detail { + template <typename T> + struct type_caster<boost::optional<T>> : optional_caster<boost::optional<T>> {}; + }} + +The above should be placed in a header file and included in all translation units +where automatic conversion is needed. Similarly, a specialization can be provided +for custom variant types: + +.. code-block:: cpp + + // `boost::variant` as an example -- can be any `std::variant`-like container + namespace pybind11 { namespace detail { + template <typename... Ts> + struct type_caster<boost::variant<Ts...>> : variant_caster<boost::variant<Ts...>> {}; + + // Specifies the function used to visit the variant -- `apply_visitor` instead of `visit` + template <> + struct visit_helper<boost::variant> { + template <typename... Args> + static auto call(Args &&...args) -> decltype(boost::apply_visitor(args...)) { + return boost::apply_visitor(args...); + } + }; + }} // namespace pybind11::detail + +The ``visit_helper`` specialization is not required if your ``name::variant`` provides +a ``name::visit()`` function. For any other function name, the specialization must be +included to tell pybind11 how to visit the variant. + +.. note:: + + pybind11 only supports the modern implementation of ``boost::variant`` + which makes use of variadic templates. This requires Boost 1.56 or newer. + Additionally, on Windows, MSVC 2017 is required because ``boost::variant`` + falls back to the old non-variadic implementation on MSVC 2015. + .. _opaque: Making opaque types @@ -105,10 +158,10 @@ the declaration before any binding code (e.g. invocations to ``class_::def()``, etc.). This macro must be specified at the top level (and outside of any namespaces), since it instantiates a partial template overload. If your binding code consists of -multiple compilation units, it must be present in every file preceding any -usage of ``std::vector<int>``. Opaque types must also have a corresponding -``class_`` declaration to associate them with a name in Python, and to define a -set of available operations, e.g.: +multiple compilation units, it must be present in every file (typically via a +common header) preceding any usage of ``std::vector<int>``. Opaque types must +also have a corresponding ``class_`` declaration to associate them with a name +in Python, and to define a set of available operations, e.g.: .. code-block:: cpp @@ -122,6 +175,20 @@ set of available operations, e.g.: }, py::keep_alive<0, 1>()) /* Keep vector alive while iterator is used */ // .... +Please take a look at the :ref:`macro_notes` before using the +``PYBIND11_MAKE_OPAQUE`` macro. + +.. seealso:: + + The file :file:`tests/test_opaque_types.cpp` contains a complete + example that demonstrates how to create and expose opaque types using + pybind11 in more detail. + +.. _stl_bind: + +Binding STL containers +====================== + The ability to expose STL containers as native Python objects is a fairly common request, hence pybind11 also provides an optional header file named :file:`pybind11/stl_bind.h` that does exactly this. The mapped containers try @@ -143,14 +210,34 @@ The following example showcases usage of :file:`pybind11/stl_bind.h`: py::bind_vector<std::vector<int>>(m, "VectorInt"); py::bind_map<std::map<std::string, double>>(m, "MapStringDouble"); -Please take a look at the :ref:`macro_notes` before using the -``PYBIND11_MAKE_OPAQUE`` macro. +When binding STL containers pybind11 considers the types of the container's +elements to decide whether the container should be confined to the local module +(via the :ref:`module_local` feature). If the container element types are +anything other than already-bound custom types bound without +``py::module_local()`` the container binding will have ``py::module_local()`` +applied. This includes converting types such as numeric types, strings, Eigen +types; and types that have not yet been bound at the time of the stl container +binding. This module-local binding is designed to avoid potential conflicts +between module bindings (for example, from two separate modules each attempting +to bind ``std::vector<int>`` as a python type). + +It is possible to override this behavior to force a definition to be either +module-local or global. To do so, you can pass the attributes +``py::module_local()`` (to make the binding module-local) or +``py::module_local(false)`` (to make the binding global) into the +``py::bind_vector`` or ``py::bind_map`` arguments: -.. seealso:: +.. code-block:: cpp - The file :file:`tests/test_opaque_types.cpp` contains a complete - example that demonstrates how to create and expose opaque types using - pybind11 in more detail. + py::bind_vector<std::vector<int>>(m, "VectorInt", py::module_local(false)); + +Note, however, that such a global binding would make it impossible to load this +module at the same time as any other pybind module that also attempts to bind +the same container type (``std::vector<int>`` in the above example). + +See :ref:`module_local` for more details on module-local bindings. + +.. seealso:: The file :file:`tests/test_stl_binders.cpp` shows how to use the convenience STL container wrappers. diff --git a/ext/pybind11/docs/advanced/cast/strings.rst b/ext/pybind11/docs/advanced/cast/strings.rst index c70fb0bec..2cdbade3a 100644 --- a/ext/pybind11/docs/advanced/cast/strings.rst +++ b/ext/pybind11/docs/advanced/cast/strings.rst @@ -3,14 +3,23 @@ Strings, bytes and Unicode conversions .. note:: - This section discusses string handling in terms of Python 3 strings. For Python 2.7, replace all occurrences of ``str`` with ``unicode`` and ``bytes`` with ``str``. Python 2.7 users may find it best to use ``from __future__ import unicode_literals`` to avoid unintentionally using ``str`` instead of ``unicode``. + This section discusses string handling in terms of Python 3 strings. For + Python 2.7, replace all occurrences of ``str`` with ``unicode`` and + ``bytes`` with ``str``. Python 2.7 users may find it best to use ``from + __future__ import unicode_literals`` to avoid unintentionally using ``str`` + instead of ``unicode``. Passing Python strings to C++ ============================= -When a Python ``str`` is passed from Python to a C++ function that accepts ``std::string`` or ``char *`` as arguments, pybind11 will encode the Python string to UTF-8. All Python ``str`` can be encoded in UTF-8, so this operation does not fail. +When a Python ``str`` is passed from Python to a C++ function that accepts +``std::string`` or ``char *`` as arguments, pybind11 will encode the Python +string to UTF-8. All Python ``str`` can be encoded in UTF-8, so this operation +does not fail. -The C++ language is encoding agnostic. It is the responsibility of the programmer to track encodings. It's often easiest to simply `use UTF-8 everywhere <http://utf8everywhere.org/>`_. +The C++ language is encoding agnostic. It is the responsibility of the +programmer to track encodings. It's often easiest to simply `use UTF-8 +everywhere <http://utf8everywhere.org/>`_. .. code-block:: c++ @@ -39,20 +48,27 @@ The C++ language is encoding agnostic. It is the responsibility of the programme .. note:: - Some terminal emulators do not support UTF-8 or emoji fonts and may not display the example above correctly. + Some terminal emulators do not support UTF-8 or emoji fonts and may not + display the example above correctly. -The results are the same whether the C++ function accepts arguments by value or reference, and whether or not ``const`` is used. +The results are the same whether the C++ function accepts arguments by value or +reference, and whether or not ``const`` is used. Passing bytes to C++ -------------------- -A Python ``bytes`` object will be passed to C++ functions that accept ``std::string`` or ``char*`` *without* conversion. +A Python ``bytes`` object will be passed to C++ functions that accept +``std::string`` or ``char*`` *without* conversion. Returning C++ strings to Python =============================== -When a C++ function returns a ``std::string`` or ``char*`` to a Python caller, **pybind11 will assume that the string is valid UTF-8** and will decode it to a native Python ``str``, using the same API as Python uses to perform ``bytes.decode('utf-8')``. If this implicit conversion fails, pybind11 will raise a ``UnicodeDecodeError``. +When a C++ function returns a ``std::string`` or ``char*`` to a Python caller, +**pybind11 will assume that the string is valid UTF-8** and will decode it to a +native Python ``str``, using the same API as Python uses to perform +``bytes.decode('utf-8')``. If this implicit conversion fails, pybind11 will +raise a ``UnicodeDecodeError``. .. code-block:: c++ @@ -68,16 +84,22 @@ When a C++ function returns a ``std::string`` or ``char*`` to a Python caller, * True -Because UTF-8 is inclusive of pure ASCII, there is never any issue with returning a pure ASCII string to Python. If there is any possibility that the string is not pure ASCII, it is necessary to ensure the encoding is valid UTF-8. +Because UTF-8 is inclusive of pure ASCII, there is never any issue with +returning a pure ASCII string to Python. If there is any possibility that the +string is not pure ASCII, it is necessary to ensure the encoding is valid +UTF-8. .. warning:: - Implicit conversion assumes that a returned ``char *`` is null-terminated. If there is no null terminator a buffer overrun will occur. + Implicit conversion assumes that a returned ``char *`` is null-terminated. + If there is no null terminator a buffer overrun will occur. Explicit conversions -------------------- -If some C++ code constructs a ``std::string`` that is not a UTF-8 string, one can perform a explicit conversion and return a ``py::str`` object. Explicit conversion has the same overhead as implicit conversion. +If some C++ code constructs a ``std::string`` that is not a UTF-8 string, one +can perform a explicit conversion and return a ``py::str`` object. Explicit +conversion has the same overhead as implicit conversion. .. code-block:: c++ @@ -95,15 +117,20 @@ If some C++ code constructs a ``std::string`` that is not a UTF-8 string, one ca >>> str_output() 'Send your résumé to Alice in HR' -The `Python C API <https://docs.python.org/3/c-api/unicode.html#built-in-codecs>`_ provides several built-in codecs. +The `Python C API +<https://docs.python.org/3/c-api/unicode.html#built-in-codecs>`_ provides +several built-in codecs. -One could also use a third party encoding library such as libiconv to transcode to UTF-8. +One could also use a third party encoding library such as libiconv to transcode +to UTF-8. Return C++ strings without conversion ------------------------------------- -If the data in a C++ ``std::string`` does not represent text and should be returned to Python as ``bytes``, then one can return the data as a ``py::bytes`` object. +If the data in a C++ ``std::string`` does not represent text and should be +returned to Python as ``bytes``, then one can return the data as a +``py::bytes`` object. .. code-block:: c++ @@ -120,7 +147,8 @@ If the data in a C++ ``std::string`` does not represent text and should be retur b'\xba\xd0\xba\xd0' -Note the asymmetry: pybind11 will convert ``bytes`` to ``std::string`` without encoding, but cannot convert ``std::string`` back to ``bytes`` implicitly. +Note the asymmetry: pybind11 will convert ``bytes`` to ``std::string`` without +encoding, but cannot convert ``std::string`` back to ``bytes`` implicitly. .. code-block:: c++ @@ -128,7 +156,7 @@ Note the asymmetry: pybind11 will convert ``bytes`` to ``std::string`` without e [](std::string s) { // Accepts str or bytes from Python return s; // Looks harmless, but implicitly converts to str } - ); + ); .. code-block:: python @@ -142,7 +170,12 @@ Note the asymmetry: pybind11 will convert ``bytes`` to ``std::string`` without e Wide character strings ====================== -When a Python ``str`` is passed to a C++ function expecting ``std::wstring``, ``wchar_t*``, ``std::u16string`` or ``std::u32string``, the ``str`` will be encoded to UTF-16 or UTF-32 depending on how the C++ compiler implements each type, in the platform's endian. When strings of these types are returned, they are assumed to contain valid UTF-16 or UTF-32, and will be decoded to Python ``str``. +When a Python ``str`` is passed to a C++ function expecting ``std::wstring``, +``wchar_t*``, ``std::u16string`` or ``std::u32string``, the ``str`` will be +encoded to UTF-16 or UTF-32 depending on how the C++ compiler implements each +type, in the platform's native endianness. When strings of these types are +returned, they are assumed to contain valid UTF-16 or UTF-32, and will be +decoded to Python ``str``. .. code-block:: c++ @@ -171,17 +204,23 @@ When a Python ``str`` is passed to a C++ function expecting ``std::wstring``, `` .. warning:: - Wide character strings may not work as described on Python 2.7 or Python 3.3 compiled with ``--enable-unicode=ucs2``. + Wide character strings may not work as described on Python 2.7 or Python + 3.3 compiled with ``--enable-unicode=ucs2``. -Strings in multibyte encodings such as Shift-JIS must transcoded to a UTF-8/16/32 before being returned to Python. +Strings in multibyte encodings such as Shift-JIS must transcoded to a +UTF-8/16/32 before being returned to Python. Character literals ================== -C++ functions that accept character literals as input will receive the first character of a Python ``str`` as their input. If the string is longer than one Unicode character, trailing characters will be ignored. +C++ functions that accept character literals as input will receive the first +character of a Python ``str`` as their input. If the string is longer than one +Unicode character, trailing characters will be ignored. -When a character literal is returned from C++ (such as a ``char`` or a ``wchar_t``), it will be converted to a ``str`` that represents the single character. +When a character literal is returned from C++ (such as a ``char`` or a +``wchar_t``), it will be converted to a ``str`` that represents the single +character. .. code-block:: c++ @@ -189,26 +228,34 @@ When a character literal is returned from C++ (such as a ``char`` or a ``wchar_t m.def("pass_wchar", [](wchar_t w) { return w; }); .. code-block:: python - + >>> example.pass_char('A') 'A' -While C++ will cast integers to character types (``char c = 0x65;``), pybind11 does not convert Python integers to characters implicitly. The Python function ``chr()`` can be used to convert integers to characters. +While C++ will cast integers to character types (``char c = 0x65;``), pybind11 +does not convert Python integers to characters implicitly. The Python function +``chr()`` can be used to convert integers to characters. .. code-block:: python - + >>> example.pass_char(0x65) TypeError >>> example.pass_char(chr(0x65)) 'A' -If the desire is to work with an 8-bit integer, use ``int8_t`` or ``uint8_t`` as the argument type. +If the desire is to work with an 8-bit integer, use ``int8_t`` or ``uint8_t`` +as the argument type. Grapheme clusters ----------------- -A single grapheme may be represented by two or more Unicode characters. For example 'é' is usually represented as U+00E9 but can also be expressed as the combining character sequence U+0065 U+0301 (that is, the letter 'e' followed by a combining acute accent). The combining character will be lost if the two-character sequence is passed as an argument, even though it renders as a single grapheme. +A single grapheme may be represented by two or more Unicode characters. For +example 'é' is usually represented as U+00E9 but can also be expressed as the +combining character sequence U+0065 U+0301 (that is, the letter 'e' followed by +a combining acute accent). The combining character will be lost if the +two-character sequence is passed as an argument, even though it renders as a +single grapheme. .. code-block:: python @@ -226,18 +273,31 @@ A single grapheme may be represented by two or more Unicode characters. For exam >>> example.pass_wchar(combining_e_acute) 'e' -Normalizing combining characters before passing the character literal to C++ may resolve *some* of these issues: +Normalizing combining characters before passing the character literal to C++ +may resolve *some* of these issues: .. code-block:: python >>> example.pass_wchar(unicodedata.normalize('NFC', combining_e_acute)) 'é' -In some languages (Thai for example), there are `graphemes that cannot be expressed as a single Unicode code point <http://unicode.org/reports/tr29/#Grapheme_Cluster_Boundaries>`_, so there is no way to capture them in a C++ character type. +In some languages (Thai for example), there are `graphemes that cannot be +expressed as a single Unicode code point +<http://unicode.org/reports/tr29/#Grapheme_Cluster_Boundaries>`_, so there is +no way to capture them in a C++ character type. + + +C++17 string views +================== +C++17 string views are automatically supported when compiling in C++17 mode. +They follow the same rules for encoding and decoding as the corresponding STL +string type (for example, a ``std::u16string_view`` argument will be passed +UTF-16-encoded data, and a returned ``std::string_view`` will be decoded as +UTF-8). References ========== * `The Absolute Minimum Every Software Developer Absolutely, Positively Must Know About Unicode and Character Sets (No Excuses!) <https://www.joelonsoftware.com/2003/10/08/the-absolute-minimum-every-software-developer-absolutely-positively-must-know-about-unicode-and-character-sets-no-excuses/>`_ -* `C++ - Using STL Strings at Win32 API Boundaries <https://msdn.microsoft.com/en-ca/magazine/mt238407.aspx>`_
\ No newline at end of file +* `C++ - Using STL Strings at Win32 API Boundaries <https://msdn.microsoft.com/en-ca/magazine/mt238407.aspx>`_ diff --git a/ext/pybind11/docs/advanced/classes.rst b/ext/pybind11/docs/advanced/classes.rst index 8896441b6..93deeec62 100644 --- a/ext/pybind11/docs/advanced/classes.rst +++ b/ext/pybind11/docs/advanced/classes.rst @@ -45,9 +45,7 @@ Normally, the binding code for these classes would look as follows: .. code-block:: cpp - PYBIND11_PLUGIN(example) { - py::module m("example", "pybind11 example plugin"); - + PYBIND11_MODULE(example, m) { py::class_<Animal> animal(m, "Animal"); animal .def("go", &Animal::go); @@ -56,8 +54,6 @@ Normally, the binding code for these classes would look as follows: .def(py::init<>()); m.def("call_go", &call_go); - - return m.ptr(); } However, these bindings are impossible to extend: ``Animal`` is not @@ -90,18 +86,16 @@ functions, and :func:`PYBIND11_OVERLOAD` should be used for functions which have a default implementation. There are also two alternate macros :func:`PYBIND11_OVERLOAD_PURE_NAME` and :func:`PYBIND11_OVERLOAD_NAME` which take a string-valued name argument between the *Parent class* and *Name of the -function* slots, which defines the name of function in Python. This is required +function* slots, which defines the name of function in Python. This is required when the C++ and Python versions of the function have different names, e.g. ``operator()`` vs ``__call__``. The binding code also needs a few minor adaptations (highlighted): .. code-block:: cpp - :emphasize-lines: 4,6,7 - - PYBIND11_PLUGIN(example) { - py::module m("example", "pybind11 example plugin"); + :emphasize-lines: 2,4,5 + PYBIND11_MODULE(example, m) { py::class_<Animal, PyAnimal /* <--- trampoline*/> animal(m, "Animal"); animal .def(py::init<>()) @@ -111,8 +105,6 @@ The binding code also needs a few minor adaptations (highlighted): .def(py::init<>()); m.def("call_go", &call_go); - - return m.ptr(); } Importantly, pybind11 is made aware of the trampoline helper class by @@ -131,7 +123,7 @@ Bindings should be made against the actual class, not the trampoline helper clas .def("go", &PyAnimal::go); /* <--- THIS IS WRONG, use &Animal::go */ Note, however, that the above is sufficient for allowing python classes to -extend ``Animal``, but not ``Dog``: see ref:`virtual_and_inheritance` for the +extend ``Animal``, but not ``Dog``: see :ref:`virtual_and_inheritance` for the necessary steps required to providing proper overload support for inherited classes. @@ -152,6 +144,30 @@ a virtual method call. >>> call_go(c) u'meow! meow! meow! ' +If you are defining a custom constructor in a derived Python class, you *must* +ensure that you explicitly call the bound C++ constructor using ``__init__``, +*regardless* of whether it is a default constructor or not. Otherwise, the +memory for the C++ portion of the instance will be left uninitialized, which +will generally leave the C++ instance in an invalid state and cause undefined +behavior if the C++ instance is subsequently used. + +Here is an example: + +.. code-block:: python + + class Dachschund(Dog): + def __init__(self, name): + Dog.__init__(self) # Without this, undefind behavior may occur if the C++ portions are referenced. + self.name = name + def bark(self): + return "yap!" + +Note that a direct ``__init__`` constructor *should be called*, and ``super()`` +should not be used. For simple cases of linear inheritance, ``super()`` +may work, but once you begin mixing Python and C++ multiple inheritance, +things will fall apart due to differences between Python's MRO and C++'s +mechanisms. + Please take a look at the :ref:`macro_notes` before using this feature. .. note:: @@ -306,6 +322,8 @@ can now create a python class that inherits from ``Dog``: See the file :file:`tests/test_virtual_functions.cpp` for complete examples using both the duplication and templated trampoline approaches. +.. _extended_aliases: + Extended trampoline class functionality ======================================= @@ -333,7 +351,7 @@ ensuring member initialization and (eventual) destruction. .. seealso:: - See the file :file:`tests/test_alias_initialization.cpp` for complete examples + See the file :file:`tests/test_virtual_functions.cpp` for complete examples showing both normal and forced trampoline instantiation. .. _custom_constructors: @@ -342,29 +360,129 @@ Custom constructors =================== The syntax for binding constructors was previously introduced, but it only -works when a constructor with the given parameters actually exists on the C++ -side. To extend this to more general cases, let's take a look at what actually -happens under the hood: the following statement +works when a constructor of the appropriate arguments actually exists on the +C++ side. To extend this to more general cases, pybind11 makes it possible +to bind factory functions as constructors. For example, suppose you have a +class like this: .. code-block:: cpp + class Example { + private: + Example(int); // private constructor + public: + // Factory function: + static Example create(int a) { return Example(a); } + }; + py::class_<Example>(m, "Example") - .def(py::init<int>()); + .def(py::init(&Example::create)); -is short hand notation for +While it is possible to create a straightforward binding of the static +``create`` method, it may sometimes be preferable to expose it as a constructor +on the Python side. This can be accomplished by calling ``.def(py::init(...))`` +with the function reference returning the new instance passed as an argument. +It is also possible to use this approach to bind a function returning a new +instance by raw pointer or by the holder (e.g. ``std::unique_ptr``). + +The following example shows the different approaches: .. code-block:: cpp + class Example { + private: + Example(int); // private constructor + public: + // Factory function - returned by value: + static Example create(int a) { return Example(a); } + + // These constructors are publicly callable: + Example(double); + Example(int, int); + Example(std::string); + }; + py::class_<Example>(m, "Example") - .def("__init__", - [](Example &instance, int arg) { - new (&instance) Example(arg); - } - ); + // Bind the factory function as a constructor: + .def(py::init(&Example::create)) + // Bind a lambda function returning a pointer wrapped in a holder: + .def(py::init([](std::string arg) { + return std::unique_ptr<Example>(new Example(arg)); + })) + // Return a raw pointer: + .def(py::init([](int a, int b) { return new Example(a, b); })) + // You can mix the above with regular C++ constructor bindings as well: + .def(py::init<double>()) + ; + +When the constructor is invoked from Python, pybind11 will call the factory +function and store the resulting C++ instance in the Python instance. + +When combining factory functions constructors with :ref:`virtual function +trampolines <overriding_virtuals>` there are two approaches. The first is to +add a constructor to the alias class that takes a base value by +rvalue-reference. If such a constructor is available, it will be used to +construct an alias instance from the value returned by the factory function. +The second option is to provide two factory functions to ``py::init()``: the +first will be invoked when no alias class is required (i.e. when the class is +being used but not inherited from in Python), and the second will be invoked +when an alias is required. + +You can also specify a single factory function that always returns an alias +instance: this will result in behaviour similar to ``py::init_alias<...>()``, +as described in the :ref:`extended trampoline class documentation +<extended_aliases>`. + +The following example shows the different factory approaches for a class with +an alias: + +.. code-block:: cpp + + #include <pybind11/factory.h> + class Example { + public: + // ... + virtual ~Example() = default; + }; + class PyExample : public Example { + public: + using Example::Example; + PyExample(Example &&base) : Example(std::move(base)) {} + }; + py::class_<Example, PyExample>(m, "Example") + // Returns an Example pointer. If a PyExample is needed, the Example + // instance will be moved via the extra constructor in PyExample, above. + .def(py::init([]() { return new Example(); })) + // Two callbacks: + .def(py::init([]() { return new Example(); } /* no alias needed */, + []() { return new PyExample(); } /* alias needed */)) + // *Always* returns an alias instance (like py::init_alias<>()) + .def(py::init([]() { return new PyExample(); })) + ; + +Brace initialization +-------------------- + +``pybind11::init<>`` internally uses C++11 brace initialization to call the +constructor of the target class. This means that it can be used to bind +*implicit* constructors as well: + +.. code-block:: cpp + + struct Aggregate { + int a; + std::string b; + }; + + py::class_<Aggregate>(m, "Aggregate") + .def(py::init<int, const std::string &>()); -In other words, :func:`init` creates an anonymous function that invokes an -in-place constructor. Memory allocation etc. is already take care of beforehand -within pybind11. +.. note:: + + Note that brace initialization preferentially invokes constructor overloads + taking a ``std::initializer_list``. In the rare event that this causes an + issue, you can work around it by using ``py::init(...)`` with a lambda + function that constructs the new object as desired. .. _classes_with_non_public_destructors: @@ -435,6 +553,10 @@ Python side: Implicit conversions from ``A`` to ``B`` only work when ``B`` is a custom data type that is exposed to Python via pybind11. + To prevent runaway recursion, implicit conversions are non-reentrant: an + implicit conversion invoked as part of another implicit conversion of the + same type (i.e. from ``A`` to ``B``) will fail. + .. _static_properties: Static properties @@ -491,9 +613,7 @@ to Python. #include <pybind11/operators.h> - PYBIND11_PLUGIN(example) { - py::module m("example", "pybind11 example plugin"); - + PYBIND11_MODULE(example, m) { py::class_<Vector2>(m, "Vector2") .def(py::init<float, float>()) .def(py::self + py::self) @@ -502,8 +622,6 @@ to Python. .def(float() * py::self) .def(py::self * float()) .def("__repr__", &Vector2::toString); - - return m.ptr(); } Note that a line like @@ -537,13 +655,15 @@ throwing a type error. complete example that demonstrates how to work with overloaded operators in more detail. +.. _pickling: + Pickling support ================ Python's ``pickle`` module provides a powerful facility to serialize and de-serialize a Python object graph into a binary data stream. To pickle and -unpickle C++ classes using pybind11, two additional functions must be provided. -Suppose the class in question has the following signature: +unpickle C++ classes using pybind11, a ``py::pickle()`` definition must be +provided. Suppose the class in question has the following signature: .. code-block:: cpp @@ -559,8 +679,9 @@ Suppose the class in question has the following signature: int m_extra = 0; }; -The binding code including the requisite ``__setstate__`` and ``__getstate__`` methods [#f3]_ -looks as follows: +Pickling support in Python is enabled by defining the ``__setstate__`` and +``__getstate__`` methods [#f3]_. For pybind11 classes, use ``py::pickle()`` +to bind these two functions: .. code-block:: cpp @@ -569,21 +690,28 @@ looks as follows: .def("value", &Pickleable::value) .def("extra", &Pickleable::extra) .def("setExtra", &Pickleable::setExtra) - .def("__getstate__", [](const Pickleable &p) { - /* Return a tuple that fully encodes the state of the object */ - return py::make_tuple(p.value(), p.extra()); - }) - .def("__setstate__", [](Pickleable &p, py::tuple t) { - if (t.size() != 2) - throw std::runtime_error("Invalid state!"); - - /* Invoke the in-place constructor. Note that this is needed even - when the object just has a trivial default constructor */ - new (&p) Pickleable(t[0].cast<std::string>()); - - /* Assign any additional state */ - p.setExtra(t[1].cast<int>()); - }); + .def(py::pickle( + [](const Pickleable &p) { // __getstate__ + /* Return a tuple that fully encodes the state of the object */ + return py::make_tuple(p.value(), p.extra()); + }, + [](py::tuple t) { // __setstate__ + if (t.size() != 2) + throw std::runtime_error("Invalid state!"); + + /* Create a new C++ instance */ + Pickleable p(t[0].cast<std::string>()); + + /* Assign any additional state */ + p.setExtra(t[1].cast<int>()); + + return p; + } + )); + +The ``__setstate__`` part of the ``py::picke()`` definition follows the same +rules as the single-argument version of ``py::init()``. The return type can be +a value, pointer or holder type. See :ref:`custom_constructors` for details. An instance can now be pickled as follows: @@ -631,27 +759,243 @@ interspersed with alias types and holder types (discussed earlier in this document)---pybind11 will automatically find out which is which. The only requirement is that the first template argument is the type to be declared. -There are two caveats regarding the implementation of this feature: +It is also permitted to inherit multiply from exported C++ classes in Python, +as well as inheriting from multiple Python and/or pybind-exported classes. + +There is one caveat regarding the implementation of this feature: + +When only one base type is specified for a C++ type that actually has multiple +bases, pybind11 will assume that it does not participate in multiple +inheritance, which can lead to undefined behavior. In such cases, add the tag +``multiple_inheritance`` to the class constructor: + +.. code-block:: cpp + + py::class_<MyType, BaseType2>(m, "MyType", py::multiple_inheritance()); + +The tag is redundant and does not need to be specified when multiple base types +are listed. + +.. _module_local: + +Module-local class bindings +=========================== + +When creating a binding for a class, pybind by default makes that binding +"global" across modules. What this means is that a type defined in one module +can be returned from any module resulting in the same Python type. For +example, this allows the following: + +.. code-block:: cpp + + // In the module1.cpp binding code for module1: + py::class_<Pet>(m, "Pet") + .def(py::init<std::string>()) + .def_readonly("name", &Pet::name); + +.. code-block:: cpp + + // In the module2.cpp binding code for module2: + m.def("create_pet", [](std::string name) { return new Pet(name); }); + +.. code-block:: pycon + + >>> from module1 import Pet + >>> from module2 import create_pet + >>> pet1 = Pet("Kitty") + >>> pet2 = create_pet("Doggy") + >>> pet2.name() + 'Doggy' + +When writing binding code for a library, this is usually desirable: this +allows, for example, splitting up a complex library into multiple Python +modules. + +In some cases, however, this can cause conflicts. For example, suppose two +unrelated modules make use of an external C++ library and each provide custom +bindings for one of that library's classes. This will result in an error when +a Python program attempts to import both modules (directly or indirectly) +because of conflicting definitions on the external type: + +.. code-block:: cpp + + // dogs.cpp -1. When only one base type is specified for a C++ type that actually has - multiple bases, pybind11 will assume that it does not participate in - multiple inheritance, which can lead to undefined behavior. In such cases, - add the tag ``multiple_inheritance``: + // Binding for external library class: + py::class<pets::Pet>(m, "Pet") + .def("name", &pets::Pet::name); - .. code-block:: cpp + // Binding for local extension class: + py::class<Dog, pets::Pet>(m, "Dog") + .def(py::init<std::string>()); - py::class_<MyType, BaseType2>(m, "MyType", py::multiple_inheritance()); +.. code-block:: cpp + + // cats.cpp, in a completely separate project from the above dogs.cpp. + + // Binding for external library class: + py::class<pets::Pet>(m, "Pet") + .def("get_name", &pets::Pet::name); + + // Binding for local extending class: + py::class<Cat, pets::Pet>(m, "Cat") + .def(py::init<std::string>()); + +.. code-block:: pycon + + >>> import cats + >>> import dogs + Traceback (most recent call last): + File "<stdin>", line 1, in <module> + ImportError: generic_type: type "Pet" is already registered! + +To get around this, you can tell pybind11 to keep the external class binding +localized to the module by passing the ``py::module_local()`` attribute into +the ``py::class_`` constructor: + +.. code-block:: cpp + + // Pet binding in dogs.cpp: + py::class<pets::Pet>(m, "Pet", py::module_local()) + .def("name", &pets::Pet::name); + +.. code-block:: cpp + + // Pet binding in cats.cpp: + py::class<pets::Pet>(m, "Pet", py::module_local()) + .def("get_name", &pets::Pet::name); + +This makes the Python-side ``dogs.Pet`` and ``cats.Pet`` into distinct classes, +avoiding the conflict and allowing both modules to be loaded. C++ code in the +``dogs`` module that casts or returns a ``Pet`` instance will result in a +``dogs.Pet`` Python instance, while C++ code in the ``cats`` module will result +in a ``cats.Pet`` Python instance. + +This does come with two caveats, however: First, external modules cannot return +or cast a ``Pet`` instance to Python (unless they also provide their own local +bindings). Second, from the Python point of view they are two distinct classes. + +Note that the locality only applies in the C++ -> Python direction. When +passing such a ``py::module_local`` type into a C++ function, the module-local +classes are still considered. This means that if the following function is +added to any module (including but not limited to the ``cats`` and ``dogs`` +modules above) it will be callable with either a ``dogs.Pet`` or ``cats.Pet`` +argument: + +.. code-block:: cpp + + m.def("pet_name", [](const pets::Pet &pet) { return pet.name(); }); + +For example, suppose the above function is added to each of ``cats.cpp``, +``dogs.cpp`` and ``frogs.cpp`` (where ``frogs.cpp`` is some other module that +does *not* bind ``Pets`` at all). + +.. code-block:: pycon + + >>> import cats, dogs, frogs # No error because of the added py::module_local() + >>> mycat, mydog = cats.Cat("Fluffy"), dogs.Dog("Rover") + >>> (cats.pet_name(mycat), dogs.pet_name(mydog)) + ('Fluffy', 'Rover') + >>> (cats.pet_name(mydog), dogs.pet_name(mycat), frogs.pet_name(mycat)) + ('Rover', 'Fluffy', 'Fluffy') + +It is possible to use ``py::module_local()`` registrations in one module even +if another module registers the same type globally: within the module with the +module-local definition, all C++ instances will be cast to the associated bound +Python type. In other modules any such values are converted to the global +Python type created elsewhere. + +.. note:: + + STL bindings (as provided via the optional :file:`pybind11/stl_bind.h` + header) apply ``py::module_local`` by default when the bound type might + conflict with other modules; see :ref:`stl_bind` for details. + +.. note:: + + The localization of the bound types is actually tied to the shared object + or binary generated by the compiler/linker. For typical modules created + with ``PYBIND11_MODULE()``, this distinction is not significant. It is + possible, however, when :ref:`embedding` to embed multiple modules in the + same binary (see :ref:`embedding_modules`). In such a case, the + localization will apply across all embedded modules within the same binary. + +.. seealso:: + + The file :file:`tests/test_local_bindings.cpp` contains additional examples + that demonstrate how ``py::module_local()`` works. - The tag is redundant and does not need to be specified when multiple base - types are listed. +Binding protected member functions +================================== + +It's normally not possible to expose ``protected`` member functions to Python: + +.. code-block:: cpp + + class A { + protected: + int foo() const { return 42; } + }; + + py::class_<A>(m, "A") + .def("foo", &A::foo); // error: 'foo' is a protected member of 'A' + +On one hand, this is good because non-``public`` members aren't meant to be +accessed from the outside. But we may want to make use of ``protected`` +functions in derived Python classes. + +The following pattern makes this possible: + +.. code-block:: cpp + + class A { + protected: + int foo() const { return 42; } + }; + + class Publicist : public A { // helper type for exposing protected functions + public: + using A::foo; // inherited with different access modifier + }; + + py::class_<A>(m, "A") // bind the primary class + .def("foo", &Publicist::foo); // expose protected methods via the publicist + +This works because ``&Publicist::foo`` is exactly the same function as +``&A::foo`` (same signature and address), just with a different access +modifier. The only purpose of the ``Publicist`` helper class is to make +the function name ``public``. + +If the intent is to expose ``protected`` ``virtual`` functions which can be +overridden in Python, the publicist pattern can be combined with the previously +described trampoline: + +.. code-block:: cpp + + class A { + public: + virtual ~A() = default; + + protected: + virtual int foo() const { return 42; } + }; + + class Trampoline : public A { + public: + int foo() const override { PYBIND11_OVERLOAD(int, A, foo, ); } + }; + + class Publicist : public A { + public: + using A::foo; + }; + + py::class_<A, Trampoline>(m, "A") // <-- `Trampoline` here + .def("foo", &Publicist::foo); // <-- `Publicist` here, not `Trampoline`! + +.. note:: -2. As was previously discussed in the section on :ref:`overriding_virtuals`, it - is easy to create Python types that derive from C++ classes. It is even - possible to make use of multiple inheritance to declare a Python class which - has e.g. a C++ and a Python class as bases. However, any attempt to create a - type that has *two or more* C++ classes in its hierarchy of base types will - fail with a fatal error message: ``TypeError: multiple bases have instance - lay-out conflict``. Core Python types that are implemented in C (e.g. - ``dict``, ``list``, ``Exception``, etc.) also fall under this combination - and cannot be combined with C++ types bound using pybind11 via multiple - inheritance. + MSVC 2015 has a compiler bug (fixed in version 2017) which + requires a more explicit function binding in the form of + ``.def("foo", static_cast<int (A::*)() const>(&Publicist::foo));`` + where ``int (A::*)() const`` is the type of ``A::foo``. diff --git a/ext/pybind11/docs/advanced/embedding.rst b/ext/pybind11/docs/advanced/embedding.rst new file mode 100644 index 000000000..393031603 --- /dev/null +++ b/ext/pybind11/docs/advanced/embedding.rst @@ -0,0 +1,261 @@ +.. _embedding: + +Embedding the interpreter +######################### + +While pybind11 is mainly focused on extending Python using C++, it's also +possible to do the reverse: embed the Python interpreter into a C++ program. +All of the other documentation pages still apply here, so refer to them for +general pybind11 usage. This section will cover a few extra things required +for embedding. + +Getting started +=============== + +A basic executable with an embedded interpreter can be created with just a few +lines of CMake and the ``pybind11::embed`` target, as shown below. For more +information, see :doc:`/compiling`. + +.. code-block:: cmake + + cmake_minimum_required(VERSION 3.0) + project(example) + + find_package(pybind11 REQUIRED) # or `add_subdirectory(pybind11)` + + add_executable(example main.cpp) + target_link_libraries(example PRIVATE pybind11::embed) + +The essential structure of the ``main.cpp`` file looks like this: + +.. code-block:: cpp + + #include <pybind11/embed.h> // everything needed for embedding + namespace py = pybind11; + + int main() { + py::scoped_interpreter guard{}; // start the interpreter and keep it alive + + py::print("Hello, World!"); // use the Python API + } + +The interpreter must be initialized before using any Python API, which includes +all the functions and classes in pybind11. The RAII guard class `scoped_interpreter` +takes care of the interpreter lifetime. After the guard is destroyed, the interpreter +shuts down and clears its memory. No Python functions can be called after this. + +Executing Python code +===================== + +There are a few different ways to run Python code. One option is to use `eval`, +`exec` or `eval_file`, as explained in :ref:`eval`. Here is a quick example in +the context of an executable with an embedded interpreter: + +.. code-block:: cpp + + #include <pybind11/embed.h> + namespace py = pybind11; + + int main() { + py::scoped_interpreter guard{}; + + py::exec(R"( + kwargs = dict(name="World", number=42) + message = "Hello, {name}! The answer is {number}".format(**kwargs) + print(message) + )"); + } + +Alternatively, similar results can be achieved using pybind11's API (see +:doc:`/advanced/pycpp/index` for more details). + +.. code-block:: cpp + + #include <pybind11/embed.h> + namespace py = pybind11; + using namespace py::literals; + + int main() { + py::scoped_interpreter guard{}; + + auto kwargs = py::dict("name"_a="World", "number"_a=42); + auto message = "Hello, {name}! The answer is {number}"_s.format(**kwargs); + py::print(message); + } + +The two approaches can also be combined: + +.. code-block:: cpp + + #include <pybind11/embed.h> + #include <iostream> + + namespace py = pybind11; + using namespace py::literals; + + int main() { + py::scoped_interpreter guard{}; + + auto locals = py::dict("name"_a="World", "number"_a=42); + py::exec(R"( + message = "Hello, {name}! The answer is {number}".format(**locals()) + )", py::globals(), locals); + + auto message = locals["message"].cast<std::string>(); + std::cout << message; + } + +Importing modules +================= + +Python modules can be imported using `module::import()`: + +.. code-block:: cpp + + py::module sys = py::module::import("sys"); + py::print(sys.attr("path")); + +For convenience, the current working directory is included in ``sys.path`` when +embedding the interpreter. This makes it easy to import local Python files: + +.. code-block:: python + + """calc.py located in the working directory""" + + def add(i, j): + return i + j + + +.. code-block:: cpp + + py::module calc = py::module::import("calc"); + py::object result = calc.attr("add")(1, 2); + int n = result.cast<int>(); + assert(n == 3); + +Modules can be reloaded using `module::reload()` if the source is modified e.g. +by an external process. This can be useful in scenarios where the application +imports a user defined data processing script which needs to be updated after +changes by the user. Note that this function does not reload modules recursively. + +.. _embedding_modules: + +Adding embedded modules +======================= + +Embedded binary modules can be added using the `PYBIND11_EMBEDDED_MODULE` macro. +Note that the definition must be placed at global scope. They can be imported +like any other module. + +.. code-block:: cpp + + #include <pybind11/embed.h> + namespace py = pybind11; + + PYBIND11_EMBEDDED_MODULE(fast_calc, m) { + // `m` is a `py::module` which is used to bind functions and classes + m.def("add", [](int i, int j) { + return i + j; + }); + } + + int main() { + py::scoped_interpreter guard{}; + + auto fast_calc = py::module::import("fast_calc"); + auto result = fast_calc.attr("add")(1, 2).cast<int>(); + assert(result == 3); + } + +Unlike extension modules where only a single binary module can be created, on +the embedded side an unlimited number of modules can be added using multiple +`PYBIND11_EMBEDDED_MODULE` definitions (as long as they have unique names). + +These modules are added to Python's list of builtins, so they can also be +imported in pure Python files loaded by the interpreter. Everything interacts +naturally: + +.. code-block:: python + + """py_module.py located in the working directory""" + import cpp_module + + a = cpp_module.a + b = a + 1 + + +.. code-block:: cpp + + #include <pybind11/embed.h> + namespace py = pybind11; + + PYBIND11_EMBEDDED_MODULE(cpp_module, m) { + m.attr("a") = 1; + } + + int main() { + py::scoped_interpreter guard{}; + + auto py_module = py::module::import("py_module"); + + auto locals = py::dict("fmt"_a="{} + {} = {}", **py_module.attr("__dict__")); + assert(locals["a"].cast<int>() == 1); + assert(locals["b"].cast<int>() == 2); + + py::exec(R"( + c = a + b + message = fmt.format(a, b, c) + )", py::globals(), locals); + + assert(locals["c"].cast<int>() == 3); + assert(locals["message"].cast<std::string>() == "1 + 2 = 3"); + } + + +Interpreter lifetime +==================== + +The Python interpreter shuts down when `scoped_interpreter` is destroyed. After +this, creating a new instance will restart the interpreter. Alternatively, the +`initialize_interpreter` / `finalize_interpreter` pair of functions can be used +to directly set the state at any time. + +Modules created with pybind11 can be safely re-initialized after the interpreter +has been restarted. However, this may not apply to third-party extension modules. +The issue is that Python itself cannot completely unload extension modules and +there are several caveats with regard to interpreter restarting. In short, not +all memory may be freed, either due to Python reference cycles or user-created +global data. All the details can be found in the CPython documentation. + +.. warning:: + + Creating two concurrent `scoped_interpreter` guards is a fatal error. So is + calling `initialize_interpreter` for a second time after the interpreter + has already been initialized. + + Do not use the raw CPython API functions ``Py_Initialize`` and + ``Py_Finalize`` as these do not properly handle the lifetime of + pybind11's internal data. + + +Sub-interpreter support +======================= + +Creating multiple copies of `scoped_interpreter` is not possible because it +represents the main Python interpreter. Sub-interpreters are something different +and they do permit the existence of multiple interpreters. This is an advanced +feature of the CPython API and should be handled with care. pybind11 does not +currently offer a C++ interface for sub-interpreters, so refer to the CPython +documentation for all the details regarding this feature. + +We'll just mention a couple of caveats the sub-interpreters support in pybind11: + + 1. Sub-interpreters will not receive independent copies of embedded modules. + Instead, these are shared and modifications in one interpreter may be + reflected in another. + + 2. Managing multiple threads, multiple interpreters and the GIL can be + challenging and there are several caveats here, even within the pure + CPython API (please refer to the Python docs for details). As for + pybind11, keep in mind that `gil_scoped_release` and `gil_scoped_acquire` + do not take sub-interpreters into account. diff --git a/ext/pybind11/docs/advanced/functions.rst b/ext/pybind11/docs/advanced/functions.rst index e0b0fe095..c7892b5d3 100644 --- a/ext/pybind11/docs/advanced/functions.rst +++ b/ext/pybind11/docs/advanced/functions.rst @@ -162,22 +162,25 @@ Additional call policies ======================== In addition to the above return value policies, further *call policies* can be -specified to indicate dependencies between parameters. In general, call policies -are required when the C++ object is any kind of container and another object is being -added to the container. - -There is currently just -one policy named ``keep_alive<Nurse, Patient>``, which indicates that the -argument with index ``Patient`` should be kept alive at least until the -argument with index ``Nurse`` is freed by the garbage collector. Argument +specified to indicate dependencies between parameters or ensure a certain state +for the function call. + +Keep alive +---------- + +In general, this policy is required when the C++ object is any kind of container +and another object is being added to the container. ``keep_alive<Nurse, Patient>`` +indicates that the argument with index ``Patient`` should be kept alive at least +until the argument with index ``Nurse`` is freed by the garbage collector. Argument indices start at one, while zero refers to the return value. For methods, index ``1`` refers to the implicit ``this`` pointer, while regular arguments begin at index ``2``. Arbitrarily many call policies can be specified. When a ``Nurse`` with value ``None`` is detected at runtime, the call policy does nothing. -This feature internally relies on the ability to create a *weak reference* to -the nurse object, which is permitted by all classes exposed via pybind11. When -the nurse object does not support weak references, an exception will be thrown. +When the nurse is not a pybind11-registered type, the implementation internally +relies on the ability to create a *weak reference* to the nurse object. When +the nurse object is not a pybind11-registered type and does not support weak +references, an exception will be thrown. Consider the following example: here, the binding code for a list append operation ties the lifetime of the newly added element to the underlying @@ -188,16 +191,53 @@ container: py::class_<List>(m, "List") .def("append", &List::append, py::keep_alive<1, 2>()); +For consistency, the argument indexing is identical for constructors. Index +``1`` still refers to the implicit ``this`` pointer, i.e. the object which is +being constructed. Index ``0`` refers to the return type which is presumed to +be ``void`` when a constructor is viewed like a function. The following example +ties the lifetime of the constructor element to the constructed object: + +.. code-block:: cpp + + py::class_<Nurse>(m, "Nurse") + .def(py::init<Patient &>(), py::keep_alive<1, 2>()); + .. note:: ``keep_alive`` is analogous to the ``with_custodian_and_ward`` (if Nurse, Patient != 0) and ``with_custodian_and_ward_postcall`` (if Nurse/Patient == 0) policies from Boost.Python. +Call guard +---------- + +The ``call_guard<T>`` policy allows any scope guard type ``T`` to be placed +around the function call. For example, this definition: + +.. code-block:: cpp + + m.def("foo", foo, py::call_guard<T>()); + +is equivalent to the following pseudocode: + +.. code-block:: cpp + + m.def("foo", [](args...) { + T scope_guard; + return foo(args...); // forwarded arguments + }); + +The only requirement is that ``T`` is default-constructible, but otherwise any +scope guard will work. This is very useful in combination with `gil_scoped_release`. +See :ref:`gil`. + +Multiple guards can also be specified as ``py::call_guard<T1, T2, T3...>``. The +constructor order is left to right and destruction happens in reverse. + .. seealso:: - The file :file:`tests/test_keep_alive.cpp` contains a complete example - that demonstrates using :class:`keep_alive` in more detail. + The file :file:`tests/test_call_policies.cpp` contains a complete example + that demonstrates using `keep_alive` and `call_guard` in more detail. .. _python_objects_as_args: @@ -378,6 +418,55 @@ name, i.e. by specifying ``py::arg().noconvert()``. need to specify a ``py::arg()`` annotation for each argument with the no-convert argument modified to ``py::arg().noconvert()``. +.. _none_arguments: + +Allow/Prohibiting None arguments +================================ + +When a C++ type registered with :class:`py::class_` is passed as an argument to +a function taking the instance as pointer or shared holder (e.g. ``shared_ptr`` +or a custom, copyable holder as described in :ref:`smart_pointers`), pybind +allows ``None`` to be passed from Python which results in calling the C++ +function with ``nullptr`` (or an empty holder) for the argument. + +To explicitly enable or disable this behaviour, using the +``.none`` method of the :class:`py::arg` object: + +.. code-block:: cpp + + py::class_<Dog>(m, "Dog").def(py::init<>()); + py::class_<Cat>(m, "Cat").def(py::init<>()); + m.def("bark", [](Dog *dog) -> std::string { + if (dog) return "woof!"; /* Called with a Dog instance */ + else return "(no dog)"; /* Called with None, d == nullptr */ + }, py::arg("dog").none(true)); + m.def("meow", [](Cat *cat) -> std::string { + // Can't be called with None argument + return "meow"; + }, py::arg("cat").none(false)); + +With the above, the Python call ``bark(None)`` will return the string ``"(no +dog)"``, while attempting to call ``meow(None)`` will raise a ``TypeError``: + +.. code-block:: pycon + + >>> from animals import Dog, Cat, bark, meow + >>> bark(Dog()) + 'woof!' + >>> meow(Cat()) + 'meow' + >>> bark(None) + '(no dog)' + >>> meow(None) + Traceback (most recent call last): + File "<stdin>", line 1, in <module> + TypeError: meow(): incompatible function arguments. The following argument types are supported: + 1. (cat: animals.Cat) -> str + + Invoked with: None + +The default behaviour when the tag is unspecified is to allow ``None``. + Overload resolution order ========================= diff --git a/ext/pybind11/docs/advanced/misc.rst b/ext/pybind11/docs/advanced/misc.rst index d98466512..87481ba32 100644 --- a/ext/pybind11/docs/advanced/misc.rst +++ b/ext/pybind11/docs/advanced/misc.rst @@ -15,6 +15,7 @@ T2>, myFunc)``. In this case, the preprocessor assumes that the comma indicates the beginning of the next parameter. Use a ``typedef`` to bind the template to another name and use it in the macro to avoid this problem. +.. _gil: Global Interpreter Lock (GIL) ============================= @@ -27,7 +28,7 @@ multiple Python threads. Taking :ref:`overriding_virtuals` as an example, this could be realized as follows (important changes highlighted): .. code-block:: cpp - :emphasize-lines: 8,9,33,34 + :emphasize-lines: 8,9,31,32 class PyAnimal : public Animal { public: @@ -48,9 +49,7 @@ could be realized as follows (important changes highlighted): } }; - PYBIND11_PLUGIN(example) { - py::module m("example", "pybind11 example plugin"); - + PYBIND11_MODULE(example, m) { py::class_<Animal, PyAnimal> animal(m, "Animal"); animal .def(py::init<>()) @@ -64,10 +63,15 @@ could be realized as follows (important changes highlighted): py::gil_scoped_release release; return call_go(animal); }); - - return m.ptr(); } +The ``call_go`` wrapper can also be simplified using the `call_guard` policy +(see :ref:`call_policies`) which yields the same result: + +.. code-block:: cpp + + m.def("call_go", &call_go, py::call_guard<py::gil_scoped_release>()); + Binding sequence data types, iterators, the slicing protocol, etc. ================================================================== @@ -131,22 +135,16 @@ has been executed: Naturally, both methods will fail when there are cyclic dependencies. -Note that compiling code which has its default symbol visibility set to -*hidden* (e.g. via the command line flag ``-fvisibility=hidden`` on GCC/Clang) can interfere with the -ability to access types defined in another extension module. Workarounds -include changing the global symbol visibility (not recommended, because it will -lead unnecessarily large binaries) or manually exporting types that are -accessed by multiple extension modules: +Note that pybind11 code compiled with hidden-by-default symbol visibility (e.g. +via the command line flag ``-fvisibility=hidden`` on GCC/Clang), which is +required proper pybind11 functionality, can interfere with the ability to +access types defined in another extension module. Working around this requires +manually exporting types that are accessed by multiple extension modules; +pybind11 provides a macro to do just this: .. code-block:: cpp - #ifdef _WIN32 - # define EXPORT_TYPE __declspec(dllexport) - #else - # define EXPORT_TYPE __attribute__ ((visibility("default"))) - #endif - - class EXPORT_TYPE Dog : public Animal { + class PYBIND11_EXPORT Dog : public Animal { ... }; @@ -175,7 +173,8 @@ Module Destructors pybind11 does not provide an explicit mechanism to invoke cleanup code at module destruction time. In rare cases where such functionality is required, it -is possible to emulate it using Python capsules with a destruction callback. +is possible to emulate it using Python capsules or weak references with a +destruction callback. .. code-block:: cpp @@ -185,6 +184,39 @@ is possible to emulate it using Python capsules with a destruction callback. m.add_object("_cleanup", py::capsule(cleanup_callback)); +This approach has the potential downside that instances of classes exposed +within the module may still be alive when the cleanup callback is invoked +(whether this is acceptable will generally depend on the application). + +Alternatively, the capsule may also be stashed within a type object, which +ensures that it not called before all instances of that type have been +collected: + +.. code-block:: cpp + + auto cleanup_callback = []() { /* ... */ }; + m.attr("BaseClass").attr("_cleanup") = py::capsule(cleanup_callback); + +Both approaches also expose a potentially dangerous ``_cleanup`` attribute in +Python, which may be undesirable from an API standpoint (a premature explicit +call from Python might lead to undefined behavior). Yet another approach that +avoids this issue involves weak reference with a cleanup callback: + +.. code-block:: cpp + + // Register a callback function that is invoked when the BaseClass object is colelcted + py::cpp_function cleanup_callback( + [](py::handle weakref) { + // perform cleanup here -- this function is called with the GIL held + + weakref.dec_ref(); // release weak reference + } + ); + + // Create a weak reference with a cleanup callback and initially leak it + (void) py::weakref(m.attr("BaseClass"), cleanup_callback).release(); + + Generating documentation using Sphinx ===================================== @@ -225,15 +257,11 @@ The class ``options`` allows you to selectively suppress auto-generated signatur .. code-block:: cpp - PYBIND11_PLUGIN(example) { - py::module m("example", "pybind11 example plugin"); - + PYBIND11_MODULE(example, m) { py::options options; options.disable_function_signatures(); - + m.def("add", [](int a, int b) { return a + b; }, "A function which adds two numbers"); - - return m.ptr(); } Note that changes to the settings affect only function bindings created during the diff --git a/ext/pybind11/docs/advanced/pycpp/numpy.rst b/ext/pybind11/docs/advanced/pycpp/numpy.rst index 6bcc46719..98b0c25b9 100644 --- a/ext/pybind11/docs/advanced/pycpp/numpy.rst +++ b/ext/pybind11/docs/advanced/pycpp/numpy.rst @@ -57,11 +57,11 @@ specification. struct buffer_info { void *ptr; - size_t itemsize; + ssize_t itemsize; std::string format; - int ndim; - std::vector<size_t> shape; - std::vector<size_t> strides; + ssize_t ndim; + std::vector<ssize_t> shape; + std::vector<ssize_t> strides; }; To create a C++ function that can take a Python buffer object as an argument, @@ -95,11 +95,11 @@ buffer objects (e.g. a NumPy matrix). throw std::runtime_error("Incompatible buffer dimension!"); auto strides = Strides( - info.strides[rowMajor ? 0 : 1] / sizeof(Scalar), - info.strides[rowMajor ? 1 : 0] / sizeof(Scalar)); + info.strides[rowMajor ? 0 : 1] / (py::ssize_t)sizeof(Scalar), + info.strides[rowMajor ? 1 : 0] / (py::ssize_t)sizeof(Scalar)); auto map = Eigen::Map<Matrix, 0, Strides>( - static_cat<Scalar *>(info.ptr), info.shape[0], info.shape[1], strides); + static_cast<Scalar *>(info.ptr), info.shape[0], info.shape[1], strides); new (&m) Matrix(map); }); @@ -111,18 +111,14 @@ as follows: .def_buffer([](Matrix &m) -> py::buffer_info { return py::buffer_info( - m.data(), /* Pointer to buffer */ - sizeof(Scalar), /* Size of one scalar */ - /* Python struct-style format descriptor */ - py::format_descriptor<Scalar>::format(), - /* Number of dimensions */ - 2, - /* Buffer dimensions */ - { (size_t) m.rows(), - (size_t) m.cols() }, - /* Strides (in bytes) for each index */ + m.data(), /* Pointer to buffer */ + sizeof(Scalar), /* Size of one scalar */ + py::format_descriptor<Scalar>::format(), /* Python struct-style format descriptor */ + 2, /* Number of dimensions */ + { m.rows(), m.cols() }, /* Buffer dimensions */ { sizeof(Scalar) * (rowMajor ? m.cols() : 1), sizeof(Scalar) * (rowMajor ? 1 : m.rows()) } + /* Strides (in bytes) for each index */ ); }) @@ -194,7 +190,7 @@ expects the type followed by field names: }; // ... - PYBIND11_PLUGIN(test) { + PYBIND11_MODULE(test, m) { // ... PYBIND11_NUMPY_DTYPE(A, x, y); @@ -202,6 +198,13 @@ expects the type followed by field names: /* now both A and B can be used as template arguments to py::array_t */ } +The structure should consist of fundamental arithmetic types, ``std::complex``, +previously registered substructures, and arrays of any of the above. Both C++ +arrays and ``std::array`` are supported. While there is a static assertion to +prevent many types of unsupported structures, it is still the user's +responsibility to use only "plain" structures that can be safely manipulated as +raw memory without violating invariants. + Vectorizing functions ===================== @@ -236,27 +239,13 @@ by the compiler. The result is returned as a NumPy array of type The scalar argument ``z`` is transparently replicated 4 times. The input arrays ``x`` and ``y`` are automatically converted into the right types (they are of type ``numpy.dtype.int64`` but need to be ``numpy.dtype.int32`` and -``numpy.dtype.float32``, respectively) - -Sometimes we might want to explicitly exclude an argument from the vectorization -because it makes little sense to wrap it in a NumPy array. For instance, -suppose the function signature was - -.. code-block:: cpp +``numpy.dtype.float32``, respectively). - double my_func(int x, float y, my_custom_type *z); +.. note:: -This can be done with a stateful Lambda closure: - -.. code-block:: cpp - - // Vectorize a lambda function with a capture object (e.g. to exclude some arguments from the vectorization) - m.def("vectorized_func", - [](py::array_t<int> x, py::array_t<float> y, my_custom_type *z) { - auto stateful_closure = [z](int x, float y) { return my_func(x, y, z); }; - return py::vectorize(stateful_closure)(x, y); - } - ); + Only arithmetic, complex, and POD types passed by value or by ``const &`` + reference are vectorized; all other arguments are passed through as-is. + Functions taking rvalue reference arguments cannot be vectorized. In cases where the computation is too complicated to be reduced to ``vectorize``, it will be necessary to create and access the buffer contents @@ -295,10 +284,8 @@ simply using ``vectorize``). return result; } - PYBIND11_PLUGIN(test) { - py::module m("test"); + PYBIND11_MODULE(test, m) { m.def("add_arrays", &add_arrays, "Add two NumPy arrays"); - return m.ptr(); } .. seealso:: @@ -322,17 +309,17 @@ where ``N`` gives the required dimensionality of the array: m.def("sum_3d", [](py::array_t<double> x) { auto r = x.unchecked<3>(); // x must have ndim = 3; can be non-writeable double sum = 0; - for (size_t i = 0; i < r.shape(0); i++) - for (size_t j = 0; j < r.shape(1); j++) - for (size_t k = 0; k < r.shape(2); k++) + for (ssize_t i = 0; i < r.shape(0); i++) + for (ssize_t j = 0; j < r.shape(1); j++) + for (ssize_t k = 0; k < r.shape(2); k++) sum += r(i, j, k); return sum; }); m.def("increment_3d", [](py::array_t<double> x) { auto r = x.mutable_unchecked<3>(); // Will throw if ndim != 3 or flags.writeable is false - for (size_t i = 0; i < r.shape(0); i++) - for (size_t j = 0; j < r.shape(1); j++) - for (size_t k = 0; k < r.shape(2); k++) + for (ssize_t i = 0; i < r.shape(0); i++) + for (ssize_t j = 0; j < r.shape(1); j++) + for (ssize_t k = 0; k < r.shape(2); k++) r(i, j, k) += 1.0; }, py::arg().noconvert()); diff --git a/ext/pybind11/docs/advanced/pycpp/object.rst b/ext/pybind11/docs/advanced/pycpp/object.rst index ae58876de..117131edc 100644 --- a/ext/pybind11/docs/advanced/pycpp/object.rst +++ b/ext/pybind11/docs/advanced/pycpp/object.rst @@ -33,12 +33,50 @@ The reverse direction uses the following syntax: When conversion fails, both directions throw the exception :class:`cast_error`. +.. _python_libs: + +Accessing Python libraries from C++ +=================================== + +It is also possible to import objects defined in the Python standard +library or available in the current Python environment (``sys.path``) and work +with these in C++. + +This example obtains a reference to the Python ``Decimal`` class. + +.. code-block:: cpp + + // Equivalent to "from decimal import Decimal" + py::object Decimal = py::module::import("decimal").attr("Decimal"); + +.. code-block:: cpp + + // Try to import scipy + py::object scipy = py::module::import("scipy"); + return scipy.attr("__version__"); + .. _calling_python_functions: Calling Python functions ======================== -It is also possible to call python functions via ``operator()``. +It is also possible to call Python classes, functions and methods +via ``operator()``. + +.. code-block:: cpp + + // Construct a Python object of class Decimal + py::object pi = Decimal("3.14159"); + +.. code-block:: cpp + + // Use Python to make our directories + py::object os = py::module::import("os"); + py::object makedirs = os.attr("makedirs"); + makedirs("/tmp/path/to/somewhere"); + +One can convert the result obtained from Python to a pure C++ version +if a ``py::class_`` or type conversion is defined. .. code-block:: cpp @@ -46,6 +84,37 @@ It is also possible to call python functions via ``operator()``. py::object result_py = f(1234, "hello", some_instance); MyClass &result = result_py.cast<MyClass>(); +.. _calling_python_methods: + +Calling Python methods +======================== + +To call an object's method, one can again use ``.attr`` to obtain access to the +Python method. + +.. code-block:: cpp + + // Calculate e^π in decimal + py::object exp_pi = pi.attr("exp")(); + py::print(py::str(exp_pi)); + +In the example above ``pi.attr("exp")`` is a *bound method*: it will always call +the method for that same instance of the class. Alternately one can create an +*unbound method* via the Python class (instead of instance) and pass the ``self`` +object explicitly, followed by other arguments. + +.. code-block:: cpp + + py::object decimal_exp = Decimal.attr("exp"); + + // Compute the e^n for n=0..4 + for (int n = 0; n < 5; n++) { + py::print(decimal_exp(Decimal(n)); + } + +Keyword arguments +================= + Keyword arguments are also supported. In Python, there is the usual call syntax: .. code-block:: python @@ -62,6 +131,9 @@ In C++, the same call can be made using: using namespace pybind11::literals; // to bring in the `_a` literal f(1234, "say"_a="hello", "to"_a=some_instance); // keyword call in C++ +Unpacking arguments +=================== + Unpacking of ``*args`` and ``**kwargs`` is also possible and can be mixed with other arguments: @@ -90,7 +162,7 @@ Generalized unpacking according to PEP448_ is also supported: .. seealso:: - The file :file:`tests/test_python_types.cpp` contains a complete + The file :file:`tests/test_pytypes.cpp` contains a complete example that demonstrates passing native Python types in more detail. The file :file:`tests/test_callbacks.cpp` presents a few examples of calling Python functions from C++, including keywords arguments and unpacking. diff --git a/ext/pybind11/docs/advanced/pycpp/utilities.rst b/ext/pybind11/docs/advanced/pycpp/utilities.rst index ba0dbef88..369e7c94d 100644 --- a/ext/pybind11/docs/advanced/pycpp/utilities.rst +++ b/ext/pybind11/docs/advanced/pycpp/utilities.rst @@ -21,19 +21,81 @@ expected in Python: auto args = py::make_tuple("unpacked", true); py::print("->", *args, "end"_a="<-"); // -> unpacked True <- +.. _ostream_redirect: + +Capturing standard output from ostream +====================================== + +Often, a library will use the streams ``std::cout`` and ``std::cerr`` to print, +but this does not play well with Python's standard ``sys.stdout`` and ``sys.stderr`` +redirection. Replacing a library's printing with `py::print <print>` may not +be feasible. This can be fixed using a guard around the library function that +redirects output to the corresponding Python streams: + +.. code-block:: cpp + + #include <pybind11/iostream.h> + + ... + + // Add a scoped redirect for your noisy code + m.def("noisy_func", []() { + py::scoped_ostream_redirect stream( + std::cout, // std::ostream& + py::module::import("sys").attr("stdout") // Python output + ); + call_noisy_func(); + }); + +This method respects flushes on the output streams and will flush if needed +when the scoped guard is destroyed. This allows the output to be redirected in +real time, such as to a Jupyter notebook. The two arguments, the C++ stream and +the Python output, are optional, and default to standard output if not given. An +extra type, `py::scoped_estream_redirect <scoped_estream_redirect>`, is identical +except for defaulting to ``std::cerr`` and ``sys.stderr``; this can be useful with +`py::call_guard`, which allows multiple items, but uses the default constructor: + +.. code-block:: py + + // Alternative: Call single function using call guard + m.def("noisy_func", &call_noisy_function, + py::call_guard<py::scoped_ostream_redirect, + py::scoped_estream_redirect>()); + +The redirection can also be done in Python with the addition of a context +manager, using the `py::add_ostream_redirect() <add_ostream_redirect>` function: + +.. code-block:: cpp + + py::add_ostream_redirect(m, "ostream_redirect"); + +The name in Python defaults to ``ostream_redirect`` if no name is passed. This +creates the following context manager in Python: + +.. code-block:: python + + with ostream_redirect(stdout=True, stderr=True): + noisy_function() + +It defaults to redirecting both streams, though you can use the keyword +arguments to disable one of the streams if needed. + +.. note:: + + The above methods will not redirect C-level output to file descriptors, such + as ``fprintf``. For those cases, you'll need to redirect the file + descriptors either directly in C or with Python's ``os.dup2`` function + in an operating-system dependent way. + +.. _eval: + Evaluating Python expressions from strings and files ==================================================== -pybind11 provides the :func:`eval` and :func:`eval_file` functions to evaluate +pybind11 provides the `eval`, `exec` and `eval_file` functions to evaluate Python expressions and statements. The following example illustrates how they can be used. -Both functions accept a template parameter that describes how the argument -should be interpreted. Possible choices include ``eval_expr`` (isolated -expression), ``eval_single_statement`` (a single statement, return value is -always ``none``), and ``eval_statements`` (sequence of statements, return value -is always ``none``). - .. code-block:: cpp // At beginning of file @@ -48,10 +110,35 @@ is always ``none``). int result = py::eval("my_variable + 10", scope).cast<int>(); // Evaluate a sequence of statements - py::eval<py::eval_statements>( + py::exec( "print('Hello')\n" "print('world!');", scope); // Evaluate the statements in an separate Python file on disk py::eval_file("script.py", scope); + +C++11 raw string literals are also supported and quite handy for this purpose. +The only requirement is that the first statement must be on a new line following +the raw string delimiter ``R"(``, ensuring all lines have common leading indent: + +.. code-block:: cpp + + py::exec(R"( + x = get_answer() + if x == 42: + print('Hello World!') + else: + print('Bye!') + )", scope + ); + +.. note:: + + `eval` and `eval_file` accept a template parameter that describes how the + string/file should be interpreted. Possible choices include ``eval_expr`` + (isolated expression), ``eval_single_statement`` (a single statement, return + value is always ``none``), and ``eval_statements`` (sequence of statements, + return value is always ``none``). `eval` defaults to ``eval_expr``, + `eval_file` defaults to ``eval_statements`` and `exec` is just a shortcut + for ``eval<eval_statements>``. diff --git a/ext/pybind11/docs/advanced/smart_ptrs.rst b/ext/pybind11/docs/advanced/smart_ptrs.rst index e4a238603..da57748ca 100644 --- a/ext/pybind11/docs/advanced/smart_ptrs.rst +++ b/ext/pybind11/docs/advanced/smart_ptrs.rst @@ -63,16 +63,12 @@ code? std::shared_ptr<Child> child; }; - PYBIND11_PLUGIN(example) { - py::module m("example"); - + PYBIND11_MODULE(example, m) { py::class_<Child, std::shared_ptr<Child>>(m, "Child"); py::class_<Parent, std::shared_ptr<Parent>>(m, "Parent") .def(py::init<>()) .def("get_child", &Parent::get_child); - - return m.ptr(); } The following Python code will cause undefined behavior (and likely a diff --git a/ext/pybind11/docs/basics.rst b/ext/pybind11/docs/basics.rst index 33c60049d..447250ed9 100644 --- a/ext/pybind11/docs/basics.rst +++ b/ext/pybind11/docs/basics.rst @@ -73,6 +73,8 @@ For brevity, all code examples assume that the following two lines are present: Some features may require additional headers, but those will be specified as needed. +.. _simple_example: + Creating bindings for a simple function ======================================= @@ -96,25 +98,21 @@ a file named :file:`example.cpp` with the following contents: return i + j; } - namespace py = pybind11; - - PYBIND11_PLUGIN(example) { - py::module m("example", "pybind11 example plugin"); + PYBIND11_MODULE(example, m) { + m.doc() = "pybind11 example plugin"; // optional module docstring m.def("add", &add, "A function which adds two numbers"); - - return m.ptr(); } .. [#f1] In practice, implementation and binding code will generally be located in separate files. -The :func:`PYBIND11_PLUGIN` macro creates a function that will be called when an -``import`` statement is issued from within Python. The next line creates a -module named ``example`` (with the supplied docstring). The method -:func:`module::def` generates binding code that exposes the -``add()`` function to Python. The last line returns the internal Python object -associated with ``m`` to the Python interpreter. +The :func:`PYBIND11_MODULE` macro creates a function that will be called when an +``import`` statement is issued from within Python. The module name (``example``) +is given as the first macro argument (it should not be in quotes). The second +argument (``m``) defines a variable of type :class:`py::module <module>` which +is the main interface for creating bindings. The method :func:`module::def` +generates binding code that exposes the ``add()`` function to Python. .. note:: @@ -124,23 +122,31 @@ associated with ``m`` to the Python interpreter. approach and the used syntax are borrowed from Boost.Python, though the underlying implementation is very different. -pybind11 is a header-only-library, hence it is not necessary to link against -any special libraries (other than Python itself). On Windows, use the CMake -build file discussed in section :ref:`cmake`. On Linux and Mac OS, the above -example can be compiled using the following command +pybind11 is a header-only library, hence it is not necessary to link against +any special libraries and there are no intermediate (magic) translation steps. +On Linux, the above example can be compiled using the following command: .. code-block:: bash - $ c++ -O3 -shared -std=c++11 -I <path-to-pybind11>/include `python-config --cflags --ldflags` example.cpp -o example.so + $ c++ -O3 -Wall -shared -std=c++11 -fPIC `python3 -m pybind11 --includes` example.cpp -o example`python3-config --extension-suffix` + +For more details on the required compiler flags on Linux and MacOS, see +:ref:`building_manually`. For complete cross-platform compilation instructions, +refer to the :ref:`compiling` page. + +The `python_example`_ and `cmake_example`_ repositories are also a good place +to start. They are both complete project examples with cross-platform build +systems. The only difference between the two is that `python_example`_ uses +Python's ``setuptools`` to build the module, while `cmake_example`_ uses CMake +(which may be preferable for existing C++ projects). -In general, it is advisable to include several additional build parameters -that can considerably reduce the size of the created binary. Refer to section -:ref:`cmake` for a detailed example of a suitable cross-platform CMake-based -build system. +.. _python_example: https://github.com/pybind/python_example +.. _cmake_example: https://github.com/pybind/cmake_example -Assuming that the created file :file:`example.so` (:file:`example.pyd` on Windows) -is located in the current directory, the following interactive Python session -shows how to load and execute the example. +Building the above C++ code will produce a binary module file that can be +imported to Python. Assuming that the compiled module is located in the +current directory, the following interactive Python session shows how to +load and execute the example: .. code-block:: pycon @@ -261,12 +267,10 @@ converted using the function ``py::cast``. .. code-block:: cpp - PYBIND11_PLUGIN(example) { - py::module m("example", "pybind11 example plugin"); + PYBIND11_MODULE(example, m) { m.attr("the_answer") = 42; py::object world = py::cast("World"); m.attr("what") = world; - return m.ptr(); } These are then accessible from Python: diff --git a/ext/pybind11/docs/benchmark.py b/ext/pybind11/docs/benchmark.py index 6f02e92ff..6dc0604ea 100644 --- a/ext/pybind11/docs/benchmark.py +++ b/ext/pybind11/docs/benchmark.py @@ -33,10 +33,8 @@ def generate_dummy_code_pybind11(nclasses=10): result = "#include <pybind11/pybind11.h>\n\n" result += "namespace py = pybind11;\n\n" result += decl + '\n' - result += "PYBIND11_PLUGIN(example) {\n" - result += " py::module m(\"example\");" + result += "PYBIND11_MODULE(example, m) {\n" result += bindings - result += " return m.ptr();" result += "}" return result diff --git a/ext/pybind11/docs/benchmark.rst b/ext/pybind11/docs/benchmark.rst index 8babaa319..59d533df9 100644 --- a/ext/pybind11/docs/benchmark.rst +++ b/ext/pybind11/docs/benchmark.rst @@ -31,8 +31,7 @@ Here is an example of the binding code for one class: }; ... - PYBIND11_PLUGIN(example) { - py::module m("example"); + PYBIND11_MODULE(example, m) { ... py::class_<cl034>(m, "cl034") .def("fn_000", &cl034::fn_000) @@ -40,7 +39,6 @@ Here is an example of the binding code for one class: .def("fn_002", &cl034::fn_002) .def("fn_003", &cl034::fn_003) ... - return m.ptr(); } The Boost.Python version looks almost identical except that a return value diff --git a/ext/pybind11/docs/changelog.rst b/ext/pybind11/docs/changelog.rst index aba8a2009..1ca501d15 100644 --- a/ext/pybind11/docs/changelog.rst +++ b/ext/pybind11/docs/changelog.rst @@ -6,6 +6,365 @@ Changelog Starting with version 1.8.0, pybind11 releases use a `semantic versioning <http://semver.org>`_ policy. +v2.3.0 (Not yet released) +----------------------------------------------------- + +* TBD + +v2.2.1 (September 14, 2017) +----------------------------------------------------- + +* Added ``py::module::reload()`` member function for reloading a module. + `#1040 <https://github.com/pybind/pybind11/pull/1040>`_. + +* Fixed a reference leak in the number converter. + `#1078 <https://github.com/pybind/pybind11/pull/1078>`_. + +* Fixed compilation with Clang on host GCC < 5 (old libstdc++ which isn't fully + C++11 compliant). `#1062 <https://github.com/pybind/pybind11/pull/1062>`_. + +* Fixed a regression where the automatic ``std::vector<bool>`` caster would + fail to compile. The same fix also applies to any container which returns + element proxies instead of references. + `#1053 <https://github.com/pybind/pybind11/pull/1053>`_. + +* Fixed a regression where the ``py::keep_alive`` policy could not be applied + to constructors. `#1065 <https://github.com/pybind/pybind11/pull/1065>`_. + +* Fixed a nullptr dereference when loading a ``py::module_local`` type + that's only registered in an external module. + `#1058 <https://github.com/pybind/pybind11/pull/1058>`_. + +* Fixed implicit conversion of accessors to types derived from ``py::object``. + `#1076 <https://github.com/pybind/pybind11/pull/1076>`_. + +* The ``name`` in ``PYBIND11_MODULE(name, variable)`` can now be a macro. + `#1082 <https://github.com/pybind/pybind11/pull/1082>`_. + +* Relaxed overly strict ``py::pickle()`` check for matching get and set types. + `#1064 <https://github.com/pybind/pybind11/pull/1064>`_. + +* Conversion errors now try to be more informative when it's likely that + a missing header is the cause (e.g. forgetting ``<pybind11/stl.h>``). + `#1077 <https://github.com/pybind/pybind11/pull/1077>`_. + +v2.2.0 (August 31, 2017) +----------------------------------------------------- + +* Support for embedding the Python interpreter. See the + :doc:`documentation page </advanced/embedding>` for a + full overview of the new features. + `#774 <https://github.com/pybind/pybind11/pull/774>`_, + `#889 <https://github.com/pybind/pybind11/pull/889>`_, + `#892 <https://github.com/pybind/pybind11/pull/892>`_, + `#920 <https://github.com/pybind/pybind11/pull/920>`_. + + .. code-block:: cpp + + #include <pybind11/embed.h> + namespace py = pybind11; + + int main() { + py::scoped_interpreter guard{}; // start the interpreter and keep it alive + + py::print("Hello, World!"); // use the Python API + } + +* Support for inheriting from multiple C++ bases in Python. + `#693 <https://github.com/pybind/pybind11/pull/693>`_. + + .. code-block:: python + + from cpp_module import CppBase1, CppBase2 + + class PyDerived(CppBase1, CppBase2): + def __init__(self): + CppBase1.__init__(self) # C++ bases must be initialized explicitly + CppBase2.__init__(self) + +* ``PYBIND11_MODULE`` is now the preferred way to create module entry points. + ``PYBIND11_PLUGIN`` is deprecated. See :ref:`macros` for details. + `#879 <https://github.com/pybind/pybind11/pull/879>`_. + + .. code-block:: cpp + + // new + PYBIND11_MODULE(example, m) { + m.def("add", [](int a, int b) { return a + b; }); + } + + // old + PYBIND11_PLUGIN(example) { + py::module m("example"); + m.def("add", [](int a, int b) { return a + b; }); + return m.ptr(); + } + +* pybind11's headers and build system now more strictly enforce hidden symbol + visibility for extension modules. This should be seamless for most users, + but see the :doc:`upgrade` if you use a custom build system. + `#995 <https://github.com/pybind/pybind11/pull/995>`_. + +* Support for ``py::module_local`` types which allow multiple modules to + export the same C++ types without conflicts. This is useful for opaque + types like ``std::vector<int>``. ``py::bind_vector`` and ``py::bind_map`` + now default to ``py::module_local`` if their elements are builtins or + local types. See :ref:`module_local` for details. + `#949 <https://github.com/pybind/pybind11/pull/949>`_, + `#981 <https://github.com/pybind/pybind11/pull/981>`_, + `#995 <https://github.com/pybind/pybind11/pull/995>`_, + `#997 <https://github.com/pybind/pybind11/pull/997>`_. + +* Custom constructors can now be added very easily using lambdas or factory + functions which return a class instance by value, pointer or holder. This + supersedes the old placement-new ``__init__`` technique. + See :ref:`custom_constructors` for details. + `#805 <https://github.com/pybind/pybind11/pull/805>`_, + `#1014 <https://github.com/pybind/pybind11/pull/1014>`_. + + .. code-block:: cpp + + struct Example { + Example(std::string); + }; + + py::class_<Example>(m, "Example") + .def(py::init<std::string>()) // existing constructor + .def(py::init([](int n) { // custom constructor + return std::make_unique<Example>(std::to_string(n)); + })); + +* Similarly to custom constructors, pickling support functions are now bound + using the ``py::pickle()`` adaptor which improves type safety. See the + :doc:`upgrade` and :ref:`pickling` for details. + `#1038 <https://github.com/pybind/pybind11/pull/1038>`_. + +* Builtin support for converting C++17 standard library types and general + conversion improvements: + + 1. C++17 ``std::variant`` is supported right out of the box. C++11/14 + equivalents (e.g. ``boost::variant``) can also be added with a simple + user-defined specialization. See :ref:`cpp17_container_casters` for details. + `#811 <https://github.com/pybind/pybind11/pull/811>`_, + `#845 <https://github.com/pybind/pybind11/pull/845>`_, + `#989 <https://github.com/pybind/pybind11/pull/989>`_. + + 2. Out-of-the-box support for C++17 ``std::string_view``. + `#906 <https://github.com/pybind/pybind11/pull/906>`_. + + 3. Improved compatibility of the builtin ``optional`` converter. + `#874 <https://github.com/pybind/pybind11/pull/874>`_. + + 4. The ``bool`` converter now accepts ``numpy.bool_`` and types which + define ``__bool__`` (Python 3.x) or ``__nonzero__`` (Python 2.7). + `#925 <https://github.com/pybind/pybind11/pull/925>`_. + + 5. C++-to-Python casters are now more efficient and move elements out + of rvalue containers whenever possible. + `#851 <https://github.com/pybind/pybind11/pull/851>`_, + `#936 <https://github.com/pybind/pybind11/pull/936>`_, + `#938 <https://github.com/pybind/pybind11/pull/938>`_. + + 6. Fixed ``bytes`` to ``std::string/char*`` conversion on Python 3. + `#817 <https://github.com/pybind/pybind11/pull/817>`_. + + 7. Fixed lifetime of temporary C++ objects created in Python-to-C++ conversions. + `#924 <https://github.com/pybind/pybind11/pull/924>`_. + +* Scope guard call policy for RAII types, e.g. ``py::call_guard<py::gil_scoped_release>()``, + ``py::call_guard<py::scoped_ostream_redirect>()``. See :ref:`call_policies` for details. + `#740 <https://github.com/pybind/pybind11/pull/740>`_. + +* Utility for redirecting C++ streams to Python (e.g. ``std::cout`` -> + ``sys.stdout``). Scope guard ``py::scoped_ostream_redirect`` in C++ and + a context manager in Python. See :ref:`ostream_redirect`. + `#1009 <https://github.com/pybind/pybind11/pull/1009>`_. + +* Improved handling of types and exceptions across module boundaries. + `#915 <https://github.com/pybind/pybind11/pull/915>`_, + `#951 <https://github.com/pybind/pybind11/pull/951>`_, + `#995 <https://github.com/pybind/pybind11/pull/995>`_. + +* Fixed destruction order of ``py::keep_alive`` nurse/patient objects + in reference cycles. + `#856 <https://github.com/pybind/pybind11/pull/856>`_. + +* Numpy and buffer protocol related improvements: + + 1. Support for negative strides in Python buffer objects/numpy arrays. This + required changing integers from unsigned to signed for the related C++ APIs. + Note: If you have compiler warnings enabled, you may notice some new conversion + warnings after upgrading. These can be resolved with ``static_cast``. + `#782 <https://github.com/pybind/pybind11/pull/782>`_. + + 2. Support ``std::complex`` and arrays inside ``PYBIND11_NUMPY_DTYPE``. + `#831 <https://github.com/pybind/pybind11/pull/831>`_, + `#832 <https://github.com/pybind/pybind11/pull/832>`_. + + 3. Support for constructing ``py::buffer_info`` and ``py::arrays`` using + arbitrary containers or iterators instead of requiring a ``std::vector``. + `#788 <https://github.com/pybind/pybind11/pull/788>`_, + `#822 <https://github.com/pybind/pybind11/pull/822>`_, + `#860 <https://github.com/pybind/pybind11/pull/860>`_. + + 4. Explicitly check numpy version and require >= 1.7.0. + `#819 <https://github.com/pybind/pybind11/pull/819>`_. + +* Support for allowing/prohibiting ``None`` for specific arguments and improved + ``None`` overload resolution order. See :ref:`none_arguments` for details. + `#843 <https://github.com/pybind/pybind11/pull/843>`_. + `#859 <https://github.com/pybind/pybind11/pull/859>`_. + +* Added ``py::exec()`` as a shortcut for ``py::eval<py::eval_statements>()`` + and support for C++11 raw string literals as input. See :ref:`eval`. + `#766 <https://github.com/pybind/pybind11/pull/766>`_, + `#827 <https://github.com/pybind/pybind11/pull/827>`_. + +* ``py::vectorize()`` ignores non-vectorizable arguments and supports + member functions. + `#762 <https://github.com/pybind/pybind11/pull/762>`_. + +* Support for bound methods as callbacks (``pybind11/functional.h``). + `#815 <https://github.com/pybind/pybind11/pull/815>`_. + +* Allow aliasing pybind11 methods: ``cls.attr("foo") = cls.attr("bar")``. + `#802 <https://github.com/pybind/pybind11/pull/802>`_. + +* Don't allow mixed static/non-static overloads. + `#804 <https://github.com/pybind/pybind11/pull/804>`_. + +* Fixed overriding static properties in derived classes. + `#784 <https://github.com/pybind/pybind11/pull/784>`_. + +* Improved deduction of member functions of a derived class when its bases + aren't registered with pybind11. + `#855 <https://github.com/pybind/pybind11/pull/855>`_. + + .. code-block:: cpp + + struct Base { + int foo() { return 42; } + } + + struct Derived : Base {} + + // Now works, but previously required also binding `Base` + py::class_<Derived>(m, "Derived") + .def("foo", &Derived::foo); // function is actually from `Base` + +* The implementation of ``py::init<>`` now uses C++11 brace initialization + syntax to construct instances, which permits binding implicit constructors of + aggregate types. `#1015 <https://github.com/pybind/pybind11/pull/1015>`_. + + .. code-block:: cpp + + struct Aggregate { + int a; + std::string b; + }; + + py::class_<Aggregate>(m, "Aggregate") + .def(py::init<int, const std::string &>()); + +* Fixed issues with multiple inheritance with offset base/derived pointers. + `#812 <https://github.com/pybind/pybind11/pull/812>`_, + `#866 <https://github.com/pybind/pybind11/pull/866>`_, + `#960 <https://github.com/pybind/pybind11/pull/960>`_. + +* Fixed reference leak of type objects. + `#1030 <https://github.com/pybind/pybind11/pull/1030>`_. + +* Improved support for the ``/std:c++14`` and ``/std:c++latest`` modes + on MSVC 2017. + `#841 <https://github.com/pybind/pybind11/pull/841>`_, + `#999 <https://github.com/pybind/pybind11/pull/999>`_. + +* Fixed detection of private operator new on MSVC. + `#893 <https://github.com/pybind/pybind11/pull/893>`_, + `#918 <https://github.com/pybind/pybind11/pull/918>`_. + +* Intel C++ compiler compatibility fixes. + `#937 <https://github.com/pybind/pybind11/pull/937>`_. + +* Fixed implicit conversion of `py::enum_` to integer types on Python 2.7. + `#821 <https://github.com/pybind/pybind11/pull/821>`_. + +* Added ``py::hash`` to fetch the hash value of Python objects, and + ``.def(hash(py::self))`` to provide the C++ ``std::hash`` as the Python + ``__hash__`` method. + `#1034 <https://github.com/pybind/pybind11/pull/1034>`_. + +* Fixed ``__truediv__`` on Python 2 and ``__itruediv__`` on Python 3. + `#867 <https://github.com/pybind/pybind11/pull/867>`_. + +* ``py::capsule`` objects now support the ``name`` attribute. This is useful + for interfacing with ``scipy.LowLevelCallable``. + `#902 <https://github.com/pybind/pybind11/pull/902>`_. + +* Fixed ``py::make_iterator``'s ``__next__()`` for past-the-end calls. + `#897 <https://github.com/pybind/pybind11/pull/897>`_. + +* Added ``error_already_set::matches()`` for checking Python exceptions. + `#772 <https://github.com/pybind/pybind11/pull/772>`_. + +* Deprecated ``py::error_already_set::clear()``. It's no longer needed + following a simplification of the ``py::error_already_set`` class. + `#954 <https://github.com/pybind/pybind11/pull/954>`_. + +* Deprecated ``py::handle::operator==()`` in favor of ``py::handle::is()`` + `#825 <https://github.com/pybind/pybind11/pull/825>`_. + +* Deprecated ``py::object::borrowed``/``py::object::stolen``. + Use ``py::object::borrowed_t{}``/``py::object::stolen_t{}`` instead. + `#771 <https://github.com/pybind/pybind11/pull/771>`_. + +* Changed internal data structure versioning to avoid conflicts between + modules compiled with different revisions of pybind11. + `#1012 <https://github.com/pybind/pybind11/pull/1012>`_. + +* Additional compile-time and run-time error checking and more informative messages. + `#786 <https://github.com/pybind/pybind11/pull/786>`_, + `#794 <https://github.com/pybind/pybind11/pull/794>`_, + `#803 <https://github.com/pybind/pybind11/pull/803>`_. + +* Various minor improvements and fixes. + `#764 <https://github.com/pybind/pybind11/pull/764>`_, + `#791 <https://github.com/pybind/pybind11/pull/791>`_, + `#795 <https://github.com/pybind/pybind11/pull/795>`_, + `#840 <https://github.com/pybind/pybind11/pull/840>`_, + `#844 <https://github.com/pybind/pybind11/pull/844>`_, + `#846 <https://github.com/pybind/pybind11/pull/846>`_, + `#849 <https://github.com/pybind/pybind11/pull/849>`_, + `#858 <https://github.com/pybind/pybind11/pull/858>`_, + `#862 <https://github.com/pybind/pybind11/pull/862>`_, + `#871 <https://github.com/pybind/pybind11/pull/871>`_, + `#872 <https://github.com/pybind/pybind11/pull/872>`_, + `#881 <https://github.com/pybind/pybind11/pull/881>`_, + `#888 <https://github.com/pybind/pybind11/pull/888>`_, + `#899 <https://github.com/pybind/pybind11/pull/899>`_, + `#928 <https://github.com/pybind/pybind11/pull/928>`_, + `#931 <https://github.com/pybind/pybind11/pull/931>`_, + `#944 <https://github.com/pybind/pybind11/pull/944>`_, + `#950 <https://github.com/pybind/pybind11/pull/950>`_, + `#952 <https://github.com/pybind/pybind11/pull/952>`_, + `#962 <https://github.com/pybind/pybind11/pull/962>`_, + `#965 <https://github.com/pybind/pybind11/pull/965>`_, + `#970 <https://github.com/pybind/pybind11/pull/970>`_, + `#978 <https://github.com/pybind/pybind11/pull/978>`_, + `#979 <https://github.com/pybind/pybind11/pull/979>`_, + `#986 <https://github.com/pybind/pybind11/pull/986>`_, + `#1020 <https://github.com/pybind/pybind11/pull/1020>`_, + `#1027 <https://github.com/pybind/pybind11/pull/1027>`_, + `#1037 <https://github.com/pybind/pybind11/pull/1037>`_. + +* Testing improvements. + `#798 <https://github.com/pybind/pybind11/pull/798>`_, + `#882 <https://github.com/pybind/pybind11/pull/882>`_, + `#898 <https://github.com/pybind/pybind11/pull/898>`_, + `#900 <https://github.com/pybind/pybind11/pull/900>`_, + `#921 <https://github.com/pybind/pybind11/pull/921>`_, + `#923 <https://github.com/pybind/pybind11/pull/923>`_, + `#963 <https://github.com/pybind/pybind11/pull/963>`_. v2.1.1 (April 7, 2017) ----------------------------------------------------- diff --git a/ext/pybind11/docs/classes.rst b/ext/pybind11/docs/classes.rst index 30fb2a2d5..ca2477e83 100644 --- a/ext/pybind11/docs/classes.rst +++ b/ext/pybind11/docs/classes.rst @@ -27,15 +27,11 @@ The binding code for ``Pet`` looks as follows: namespace py = pybind11; - PYBIND11_PLUGIN(example) { - py::module m("example", "pybind11 example plugin"); - + PYBIND11_MODULE(example, m) { py::class_<Pet>(m, "Pet") .def(py::init<const std::string &>()) .def("setName", &Pet::setName) .def("getName", &Pet::getName); - - return m.ptr(); } :class:`class_` creates bindings for a C++ *class* or *struct*-style data @@ -229,8 +225,8 @@ just brings them on par. .. _inheritance: -Inheritance -=========== +Inheritance and automatic upcasting +=================================== Suppose now that the example consists of two data structures with an inheritance relationship: @@ -287,6 +283,65 @@ expose fields and methods of both types: >>> p.bark() u'woof!' +The C++ classes defined above are regular non-polymorphic types with an +inheritance relationship. This is reflected in Python: + +.. code-block:: cpp + + // Return a base pointer to a derived instance + m.def("pet_store", []() { return std::unique_ptr<Pet>(new Dog("Molly")); }); + +.. code-block:: pycon + + >>> p = example.pet_store() + >>> type(p) # `Dog` instance behind `Pet` pointer + Pet # no pointer upcasting for regular non-polymorphic types + >>> p.bark() + AttributeError: 'Pet' object has no attribute 'bark' + +The function returned a ``Dog`` instance, but because it's a non-polymorphic +type behind a base pointer, Python only sees a ``Pet``. In C++, a type is only +considered polymorphic if it has at least one virtual function and pybind11 +will automatically recognize this: + +.. code-block:: cpp + + struct PolymorphicPet { + virtual ~PolymorphicPet() = default; + }; + + struct PolymorphicDog : PolymorphicPet { + std::string bark() const { return "woof!"; } + }; + + // Same binding code + py::class_<PolymorphicPet>(m, "PolymorphicPet"); + py::class_<PolymorphicDog, PolymorphicPet>(m, "PolymorphicDog") + .def(py::init<>()) + .def("bark", &PolymorphicDog::bark); + + // Again, return a base pointer to a derived instance + m.def("pet_store2", []() { return std::unique_ptr<PolymorphicPet>(new PolymorphicDog); }); + +.. code-block:: pycon + + >>> p = example.pet_store2() + >>> type(p) + PolymorphicDog # automatically upcast + >>> p.bark() + u'woof!' + +Given a pointer to a polymorphic base, pybind11 performs automatic upcasting +to the actual derived type. Note that this goes beyond the usual situation in +C++: we don't just get access to the virtual functions of the base, we get the +concrete derived type including functions and attributes that the base type may +not even be aware of. + +.. seealso:: + + For more information about polymorphic behavior see :ref:`overriding_virtuals`. + + Overloaded methods ================== diff --git a/ext/pybind11/docs/compiling.rst b/ext/pybind11/docs/compiling.rst index c7053dbf9..b5d6ce948 100644 --- a/ext/pybind11/docs/compiling.rst +++ b/ext/pybind11/docs/compiling.rst @@ -1,3 +1,5 @@ +.. _compiling: + Build systems ############# @@ -14,10 +16,10 @@ the [python_example]_ repository. Building with cppimport ======================== - cppimport is a small Python import hook that determines whether there is a C++ - source file whose name matches the requested module. If there is, the file is - compiled as a Python extension using pybind11 and placed in the same folder as - the C++ source file. Python is then able to find the module and load it. +[cppimport]_ is a small Python import hook that determines whether there is a C++ +source file whose name matches the requested module. If there is, the file is +compiled as a Python extension using pybind11 and placed in the same folder as +the C++ source file. Python is then able to find the module and load it. .. [cppimport] https://github.com/tbenthompson/cppimport @@ -74,13 +76,15 @@ removes this target from the default build (see CMake docs for details). Since pybind11 is a template library, ``pybind11_add_module`` adds compiler flags to ensure high quality code generation without bloat arising from long -symbol names and duplication of code in different translation units. The -additional flags enable LTO (Link Time Optimization), set default visibility -to *hidden* and strip unneeded symbols. See the :ref:`FAQ entry <faq:symhidden>` -for a more detailed explanation. These optimizations are never applied in -``Debug`` mode. If ``NO_EXTRAS`` is given, they will always be disabled, even -in ``Release`` mode. However, this will result in code bloat and is generally -not recommended. +symbol names and duplication of code in different translation units. It +sets default visibility to *hidden*, which is required for some pybind11 +features and functionality when attempting to load multiple pybind11 modules +compiled under different pybind11 versions. It also adds additional flags +enabling LTO (Link Time Optimization) and strip unneeded symbols. See the +:ref:`FAQ entry <faq:symhidden>` for a more detailed explanation. These +latter optimizations are never applied in ``Debug`` mode. If ``NO_EXTRAS`` is +given, they will always be disabled, even in ``Release`` mode. However, this +will result in code bloat and is generally not recommended. As stated above, LTO is enabled by default. Some newer compilers also support different flavors of LTO such as `ThinLTO`_. Setting ``THIN_LTO`` will cause @@ -92,17 +96,28 @@ regular LTO if ``-flto=thin`` is not available. Configuration variables ----------------------- -By default, pybind11 will compile modules with the latest C++ standard -available on the target compiler. To override this, the standard flag can -be given explicitly in ``PYBIND11_CPP_STANDARD``: +By default, pybind11 will compile modules with the C++14 standard, if available +on the target compiler, falling back to C++11 if C++14 support is not +available. Note, however, that this default is subject to change: future +pybind11 releases are expected to migrate to newer C++ standards as they become +available. To override this, the standard flag can be given explicitly in +``PYBIND11_CPP_STANDARD``: .. code-block:: cmake + # Use just one of these: + # GCC/clang: set(PYBIND11_CPP_STANDARD -std=c++11) + set(PYBIND11_CPP_STANDARD -std=c++14) + set(PYBIND11_CPP_STANDARD -std=c++1z) # Experimental C++17 support + # MSVC: + set(PYBIND11_CPP_STANDARD /std:c++14) + set(PYBIND11_CPP_STANDARD /std:c++latest) # Enables some MSVC C++17 features + add_subdirectory(pybind11) # or find_package(pybind11) Note that this and all other configuration variables must be set **before** the -call to ``add_subdiretory`` or ``find_package``. The variables can also be set +call to ``add_subdirectory`` or ``find_package``. The variables can also be set when calling CMake from the command line using the ``-D<variable>=<value>`` flag. The target Python version can be selected by setting ``PYBIND11_PYTHON_VERSION`` @@ -170,11 +185,84 @@ to an independently constructed (through ``add_library``, not flags (i.e. this is up to you). These include Link Time Optimization (``-flto`` on GCC/Clang/ICPC, ``/GL`` - and ``/LTCG`` on Visual Studio). Default-hidden symbols on GCC/Clang/ICPC - (``-fvisibility=hidden``) and .OBJ files with many sections on Visual Studio - (``/bigobj``). The :ref:`FAQ <faq:symhidden>` contains an + and ``/LTCG`` on Visual Studio) and .OBJ files with many sections on Visual + Studio (``/bigobj``). The :ref:`FAQ <faq:symhidden>` contains an explanation on why these are needed. +Embedding the Python interpreter +-------------------------------- + +In addition to extension modules, pybind11 also supports embedding Python into +a C++ executable or library. In CMake, simply link with the ``pybind11::embed`` +target. It provides everything needed to get the interpreter running. The Python +headers and libraries are attached to the target. Unlike ``pybind11::module``, +there is no need to manually set any additional properties here. For more +information about usage in C++, see :doc:`/advanced/embedding`. + +.. code-block:: cmake + + cmake_minimum_required(VERSION 3.0) + project(example) + + find_package(pybind11 REQUIRED) # or add_subdirectory(pybind11) + + add_executable(example main.cpp) + target_link_libraries(example PRIVATE pybind11::embed) + +.. _building_manually: + +Building manually +================= + +pybind11 is a header-only library, hence it is not necessary to link against +any special libraries and there are no intermediate (magic) translation steps. + +On Linux, you can compile an example such as the one given in +:ref:`simple_example` using the following command: + +.. code-block:: bash + + $ c++ -O3 -Wall -shared -std=c++11 -fPIC `python3 -m pybind11 --includes` example.cpp -o example`python3-config --extension-suffix` + +The flags given here assume that you're using Python 3. For Python 2, just +change the executable appropriately (to ``python`` or ``python2``). + +The ``python3 -m pybind11 --includes`` command fetches the include paths for +both pybind11 and Python headers. This assumes that pybind11 has been installed +using ``pip`` or ``conda``. If it hasn't, you can also manually specify +``-I <path-to-pybind11>/include`` together with the Python includes path +``python3-config --includes``. + +Note that Python 2.7 modules don't use a special suffix, so you should simply +use ``example.so`` instead of ``example`python3-config --extension-suffix```. +Besides, the ``--extension-suffix`` option may or may not be available, depending +on the distribution; in the latter case, the module extension can be manually +set to ``.so``. + +On Mac OS: the build command is almost the same but it also requires passing +the ``-undefined dynamic_lookup`` flag so as to ignore missing symbols when +building the module: + +.. code-block:: bash + + $ c++ -O3 -Wall -shared -std=c++11 -undefined dynamic_lookup `python3 -m pybind11 --includes` example.cpp -o example`python3-config --extension-suffix` + +In general, it is advisable to include several additional build parameters +that can considerably reduce the size of the created binary. Refer to section +:ref:`cmake` for a detailed example of a suitable cross-platform CMake-based +build system that works on all platforms including Windows. + +.. note:: + + On Linux and macOS, it's better to (intentionally) not link against + ``libpython``. The symbols will be resolved when the extension library + is loaded into a Python binary. This is preferable because you might + have several different installations of a given Python version (e.g. the + system-provided Python, and one that ships with a piece of commercial + software). In this way, the plugin will work with both versions, instead + of possibly importing a second Python library into a process that already + contains one (which will lead to a segfault). + Generating binding code automatically ===================================== diff --git a/ext/pybind11/docs/conf.py b/ext/pybind11/docs/conf.py index 09604cfeb..cd0e17eb7 100644 --- a/ext/pybind11/docs/conf.py +++ b/ext/pybind11/docs/conf.py @@ -53,7 +53,7 @@ master_doc = 'index' # General information about the project. project = 'pybind11' -copyright = '2016, Wenzel Jakob' +copyright = '2017, Wenzel Jakob' author = 'Wenzel Jakob' # The version info for the project you're documenting, acts as replacement for @@ -61,9 +61,9 @@ author = 'Wenzel Jakob' # built documents. # # The short X.Y version. -version = '2.1' +version = '2.2' # The full version, including alpha/beta/rc tags. -release = '2.1.1' +release = '2.2.1' # The language for content autogenerated by Sphinx. Refer to documentation # for a list of supported languages. @@ -314,13 +314,13 @@ highlight_language = 'cpp' def generate_doxygen_xml(app): - build_dir = '.build' + build_dir = os.path.join(app.confdir, '.build') if not os.path.exists(build_dir): os.mkdir(build_dir) try: subprocess.call(['doxygen', '--version']) - retcode = subprocess.call(['doxygen']) + retcode = subprocess.call(['doxygen'], cwd=app.confdir) if retcode < 0: sys.stderr.write("doxygen error code: {}\n".format(-retcode)) except OSError as e: diff --git a/ext/pybind11/docs/faq.rst b/ext/pybind11/docs/faq.rst index 34002b42d..8f33eb014 100644 --- a/ext/pybind11/docs/faq.rst +++ b/ext/pybind11/docs/faq.rst @@ -4,30 +4,24 @@ Frequently asked questions "ImportError: dynamic module does not define init function" =========================================================== -1. Make sure that the name specified in ``pybind::module`` and - ``PYBIND11_PLUGIN`` is consistent and identical to the filename of the - extension library. The latter should not contain any extra prefixes (e.g. - ``test.so`` instead of ``libtest.so``). - -2. If the above did not fix your issue, then you are likely using an - incompatible version of Python (for instance, the extension library was - compiled against Python 2, while the interpreter is running on top of some - version of Python 3, or vice versa) +You are likely using an incompatible version of Python (for instance, the +extension library was compiled against Python 2, while the interpreter is +running on top of some version of Python 3, or vice versa). "Symbol not found: ``__Py_ZeroStruct`` / ``_PyInstanceMethod_Type``" ======================================================================== -See item 2 of the first answer. +See the first answer. "SystemError: dynamic module not initialized properly" ====================================================== -See item 2 of the first answer. +See the first answer. The Python interpreter immediately crashes when importing my module =================================================================== -See item 2 of the first answer. +See the first answer. CMake doesn't detect the right Python version ============================================= @@ -104,14 +98,10 @@ following example: void init_ex2(py::module &); /* ... */ - PYBIND11_PLUGIN(example) { - py::module m("example", "pybind example plugin"); - + PYBIND11_MODULE(example, m) { init_ex1(m); init_ex2(m); /* ... */ - - return m.ptr(); } :file:`ex1.cpp`: @@ -161,6 +151,33 @@ specifying a larger value, e.g. ``-ftemplate-depth=1024`` on GCC/Clang. The culprit is generally the generation of function signatures at compile time using C++14 template metaprogramming. +.. _`faq:hidden_visibility`: + +"‘SomeClass’ declared with greater visibility than the type of its field ‘SomeClass::member’ [-Wattributes]" +============================================================================================================ + +This error typically indicates that you are compiling without the required +``-fvisibility`` flag. pybind11 code internally forces hidden visibility on +all internal code, but if non-hidden (and thus *exported*) code attempts to +include a pybind type (for example, ``py::object`` or ``py::list``) you can run +into this warning. + +To avoid it, make sure you are specifying ``-fvisibility=hidden`` when +compiling pybind code. + +As to why ``-fvisibility=hidden`` is necessary, because pybind modules could +have been compiled under different versions of pybind itself, it is also +important that the symbols defined in one module do not clash with the +potentially-incompatible symbols defined in another. While Python extension +modules are usually loaded with localized symbols (under POSIX systems +typically using ``dlopen`` with the ``RTLD_LOCAL`` flag), this Python default +can be changed, but even if it isn't it is not always enough to guarantee +complete independence of the symbols involved when not using +``-fvisibility=hidden``. + +Additionally, ``-fvisiblity=hidden`` can deliver considerably binary size +savings. (See the following section for more details). + .. _`faq:symhidden`: @@ -202,11 +219,14 @@ world. So we'll generally only want to export symbols for those functions which are actually called from the outside. This can be achieved by specifying the parameter ``-fvisibility=hidden`` to GCC -and Clang, which sets the default symbol visibility to *hidden*. It's best to -do this only for release builds, since the symbol names can be helpful in -debugging sessions. On Visual Studio, symbols are already hidden by default, so -nothing needs to be done there. Needless to say, this has a tremendous impact -on the final binary size of the resulting extension library. +and Clang, which sets the default symbol visibility to *hidden*, which has a +tremendous impact on the final binary size of the resulting extension library. +(On Visual Studio, symbols are already hidden by default, so nothing needs to +be done there.) + +In addition to decreasing binary size, ``-fvisibility=hidden`` also avoids +potential serious issues when loading multiple modules and is required for +proper pybind operation. See the previous FAQ entry for more details. Another aspect that can require a fair bit of code are function signature descriptions. pybind11 automatically generates human-readable function diff --git a/ext/pybind11/docs/index.rst b/ext/pybind11/docs/index.rst index cedf65209..d236611b7 100644 --- a/ext/pybind11/docs/index.rst +++ b/ext/pybind11/docs/index.rst @@ -14,6 +14,7 @@ pybind11 --- Seamless operability between C++11 and Python intro changelog + upgrade .. toctree:: :caption: The Basics @@ -33,6 +34,7 @@ pybind11 --- Seamless operability between C++11 and Python advanced/smart_ptrs advanced/cast/index advanced/pycpp/index + advanced/embedding advanced/misc .. toctree:: diff --git a/ext/pybind11/docs/reference.rst b/ext/pybind11/docs/reference.rst index 3d211f7e9..e41141bd9 100644 --- a/ext/pybind11/docs/reference.rst +++ b/ext/pybind11/docs/reference.rst @@ -9,10 +9,12 @@ Reference ######### +.. _macros: + Macros ====== -.. doxygendefine:: PYBIND11_PLUGIN +.. doxygendefine:: PYBIND11_MODULE .. _core_types: @@ -58,6 +60,26 @@ Passing extra arguments to ``def`` or ``class_`` .. doxygengroup:: annotations :members: +Embedding the interpreter +========================= + +.. doxygendefine:: PYBIND11_EMBEDDED_MODULE + +.. doxygenfunction:: initialize_interpreter + +.. doxygenfunction:: finalize_interpreter + +.. doxygenclass:: scoped_interpreter + +Redirecting C++ streams +======================= + +.. doxygenclass:: scoped_ostream_redirect + +.. doxygenclass:: scoped_estream_redirect + +.. doxygenfunction:: add_ostream_redirect + Python build-in functions ========================= diff --git a/ext/pybind11/docs/release.rst b/ext/pybind11/docs/release.rst index 30d159a6f..b31bbe97e 100644 --- a/ext/pybind11/docs/release.rst +++ b/ext/pybind11/docs/release.rst @@ -2,7 +2,7 @@ To release a new version of pybind11: - Update the version number and push to pypi - Update ``pybind11/_version.py`` (set release version, remove 'dev'). - - Update ``PYBIND11_VERSION_MAJOR`` etc. in ``include/pybind11/common.h``. + - Update ``PYBIND11_VERSION_MAJOR`` etc. in ``include/pybind11/detail/common.h``. - Ensure that all the information in ``setup.py`` is up-to-date. - Update version in ``docs/conf.py``. - Tag release date in ``docs/changelog.rst``. @@ -14,8 +14,9 @@ To release a new version of pybind11: - ``python setup.py sdist upload``. - ``python setup.py bdist_wheel upload``. - Update conda-forge (https://github.com/conda-forge/pybind11-feedstock) via PR - - change version number in ``recipe/meta.yml`` - - update checksum to match the one computed by pypi + - download release package from Github: ``wget https://github.com/pybind/pybind11/archive/vX.Y.Z.tar.gz`` + - compute checksum: ``shasum -a 256 vX.Y.Z.tar.gz`` + - change version number and checksum in ``recipe/meta.yml`` - Get back to work - Update ``_version.py`` (add 'dev' and increment minor). - Update version in ``docs/conf.py`` diff --git a/ext/pybind11/docs/upgrade.rst b/ext/pybind11/docs/upgrade.rst new file mode 100644 index 000000000..3f5697391 --- /dev/null +++ b/ext/pybind11/docs/upgrade.rst @@ -0,0 +1,404 @@ +Upgrade guide +############# + +This is a companion guide to the :doc:`changelog`. While the changelog briefly +lists all of the new features, improvements and bug fixes, this upgrade guide +focuses only the subset which directly impacts your experience when upgrading +to a new version. But it goes into more detail. This includes things like +deprecated APIs and their replacements, build system changes, general code +modernization and other useful information. + + +v2.2 +==== + +Deprecation of the ``PYBIND11_PLUGIN`` macro +-------------------------------------------- + +``PYBIND11_MODULE`` is now the preferred way to create module entry points. +The old macro emits a compile-time deprecation warning. + +.. code-block:: cpp + + // old + PYBIND11_PLUGIN(example) { + py::module m("example", "documentation string"); + + m.def("add", [](int a, int b) { return a + b; }); + + return m.ptr(); + } + + // new + PYBIND11_MODULE(example, m) { + m.doc() = "documentation string"; // optional + + m.def("add", [](int a, int b) { return a + b; }); + } + + +New API for defining custom constructors and pickling functions +--------------------------------------------------------------- + +The old placement-new custom constructors have been deprecated. The new approach +uses ``py::init()`` and factory functions to greatly improve type safety. + +Placement-new can be called accidentally with an incompatible type (without any +compiler errors or warnings), or it can initialize the same object multiple times +if not careful with the Python-side ``__init__`` calls. The new-style custom +constructors prevent such mistakes. See :ref:`custom_constructors` for details. + +.. code-block:: cpp + + // old -- deprecated (runtime warning shown only in debug mode) + py::class<Foo>(m, "Foo") + .def("__init__", [](Foo &self, ...) { + new (&self) Foo(...); // uses placement-new + }); + + // new + py::class<Foo>(m, "Foo") + .def(py::init([](...) { // Note: no `self` argument + return new Foo(...); // return by raw pointer + // or: return std::make_unique<Foo>(...); // return by holder + // or: return Foo(...); // return by value (move constructor) + })); + +Mirroring the custom constructor changes, ``py::pickle()`` is now the preferred +way to get and set object state. See :ref:`pickling` for details. + +.. code-block:: cpp + + // old -- deprecated (runtime warning shown only in debug mode) + py::class<Foo>(m, "Foo") + ... + .def("__getstate__", [](const Foo &self) { + return py::make_tuple(self.value1(), self.value2(), ...); + }) + .def("__setstate__", [](Foo &self, py::tuple t) { + new (&self) Foo(t[0].cast<std::string>(), ...); + }); + + // new + py::class<Foo>(m, "Foo") + ... + .def(py::pickle( + [](const Foo &self) { // __getstate__ + return py::make_tuple(f.value1(), f.value2(), ...); // unchanged + }, + [](py::tuple t) { // __setstate__, note: no `self` argument + return new Foo(t[0].cast<std::string>(), ...); + // or: return std::make_unique<Foo>(...); // return by holder + // or: return Foo(...); // return by value (move constructor) + } + )); + +For both the constructors and pickling, warnings are shown at module +initialization time (on import, not when the functions are called). +They're only visible when compiled in debug mode. Sample warning: + +.. code-block:: none + + pybind11-bound class 'mymodule.Foo' is using an old-style placement-new '__init__' + which has been deprecated. See the upgrade guide in pybind11's docs. + + +Stricter enforcement of hidden symbol visibility for pybind11 modules +--------------------------------------------------------------------- + +pybind11 now tries to actively enforce hidden symbol visibility for modules. +If you're using either one of pybind11's :doc:`CMake or Python build systems +<compiling>` (the two example repositories) and you haven't been exporting any +symbols, there's nothing to be concerned about. All the changes have been done +transparently in the background. If you were building manually or relied on +specific default visibility, read on. + +Setting default symbol visibility to *hidden* has always been recommended for +pybind11 (see :ref:`faq:symhidden`). On Linux and macOS, hidden symbol +visibility (in conjunction with the ``strip`` utility) yields much smaller +module binaries. `CPython's extension docs`_ also recommend hiding symbols +by default, with the goal of avoiding symbol name clashes between modules. +Starting with v2.2, pybind11 enforces this more strictly: (1) by declaring +all symbols inside the ``pybind11`` namespace as hidden and (2) by including +the ``-fvisibility=hidden`` flag on Linux and macOS (only for extension +modules, not for embedding the interpreter). + +.. _CPython's extension docs: https://docs.python.org/3/extending/extending.html#providing-a-c-api-for-an-extension-module + +The namespace-scope hidden visibility is done automatically in pybind11's +headers and it's generally transparent to users. It ensures that: + +* Modules compiled with different pybind11 versions don't clash with each other. + +* Some new features, like ``py::module_local`` bindings, can work as intended. + +The ``-fvisibility=hidden`` flag applies the same visibility to user bindings +outside of the ``pybind11`` namespace. It's now set automatic by pybind11's +CMake and Python build systems, but this needs to be done manually by users +of other build systems. Adding this flag: + +* Minimizes the chances of symbol conflicts between modules. E.g. if two + unrelated modules were statically linked to different (ABI-incompatible) + versions of the same third-party library, a symbol clash would be likely + (and would end with unpredictable results). + +* Produces smaller binaries on Linux and macOS, as pointed out previously. + +Within pybind11's CMake build system, ``pybind11_add_module`` has always been +setting the ``-fvisibility=hidden`` flag in release mode. From now on, it's +being applied unconditionally, even in debug mode and it can no longer be opted +out of with the ``NO_EXTRAS`` option. The ``pybind11::module`` target now also +adds this flag to it's interface. The ``pybind11::embed`` target is unchanged. + +The most significant change here is for the ``pybind11::module`` target. If you +were previously relying on default visibility, i.e. if your Python module was +doubling as a shared library with dependents, you'll need to either export +symbols manually (recommended for cross-platform libraries) or factor out the +shared library (and have the Python module link to it like the other +dependents). As a temporary workaround, you can also restore default visibility +using the CMake code below, but this is not recommended in the long run: + +.. code-block:: cmake + + target_link_libraries(mymodule PRIVATE pybind11::module) + + add_library(restore_default_visibility INTERFACE) + target_compile_options(restore_default_visibility INTERFACE -fvisibility=default) + target_link_libraries(mymodule PRIVATE restore_default_visibility) + + +Local STL container bindings +---------------------------- + +Previous pybind11 versions could only bind types globally -- all pybind11 +modules, even unrelated ones, would have access to the same exported types. +However, this would also result in a conflict if two modules exported the +same C++ type, which is especially problematic for very common types, e.g. +``std::vector<int>``. :ref:`module_local` were added to resolve this (see +that section for a complete usage guide). + +``py::class_`` still defaults to global bindings (because these types are +usually unique across modules), however in order to avoid clashes of opaque +types, ``py::bind_vector`` and ``py::bind_map`` will now bind STL containers +as ``py::module_local`` if their elements are: builtins (``int``, ``float``, +etc.), not bound using ``py::class_``, or bound as ``py::module_local``. For +example, this change allows multiple modules to bind ``std::vector<int>`` +without causing conflicts. See :ref:`stl_bind` for more details. + +When upgrading to this version, if you have multiple modules which depend on +a single global binding of an STL container, note that all modules can still +accept foreign ``py::module_local`` types in the direction of Python-to-C++. +The locality only affects the C++-to-Python direction. If this is needed in +multiple modules, you'll need to either: + +* Add a copy of the same STL binding to all of the modules which need it. + +* Restore the global status of that single binding by marking it + ``py::module_local(false)``. + +The latter is an easy workaround, but in the long run it would be best to +localize all common type bindings in order to avoid conflicts with +third-party modules. + + +Negative strides for Python buffer objects and numpy arrays +----------------------------------------------------------- + +Support for negative strides required changing the integer type from unsigned +to signed in the interfaces of ``py::buffer_info`` and ``py::array``. If you +have compiler warnings enabled, you may notice some new conversion warnings +after upgrading. These can be resolved using ``static_cast``. + + +Deprecation of some ``py::object`` APIs +--------------------------------------- + +To compare ``py::object`` instances by pointer, you should now use +``obj1.is(obj2)`` which is equivalent to ``obj1 is obj2`` in Python. +Previously, pybind11 used ``operator==`` for this (``obj1 == obj2``), but +that could be confusing and is now deprecated (so that it can eventually +be replaced with proper rich object comparison in a future release). + +For classes which inherit from ``py::object``, ``borrowed`` and ``stolen`` +were previously available as protected constructor tags. Now the types +should be used directly instead: ``borrowed_t{}`` and ``stolen_t{}`` +(`#771 <https://github.com/pybind/pybind11/pull/771>`_). + + +Stricter compile-time error checking +------------------------------------ + +Some error checks have been moved from run time to compile time. Notably, +automatic conversion of ``std::shared_ptr<T>`` is not possible when ``T`` is +not directly registered with ``py::class_<T>`` (e.g. ``std::shared_ptr<int>`` +or ``std::shared_ptr<std::vector<T>>`` are not automatically convertible). +Attempting to bind a function with such arguments now results in a compile-time +error instead of waiting to fail at run time. + +``py::init<...>()`` constructor definitions are also stricter and now prevent +bindings which could cause unexpected behavior: + +.. code-block:: cpp + + struct Example { + Example(int &); + }; + + py::class_<Example>(m, "Example") + .def(py::init<int &>()); // OK, exact match + // .def(py::init<int>()); // compile-time error, mismatch + +A non-``const`` lvalue reference is not allowed to bind to an rvalue. However, +note that a constructor taking ``const T &`` can still be registered using +``py::init<T>()`` because a ``const`` lvalue reference can bind to an rvalue. + +v2.1 +==== + +Minimum compiler versions are enforced at compile time +------------------------------------------------------ + +The minimums also apply to v2.0 but the check is now explicit and a compile-time +error is raised if the compiler does not meet the requirements: + +* GCC >= 4.8 +* clang >= 3.3 (appleclang >= 5.0) +* MSVC >= 2015u3 +* Intel C++ >= 15.0 + + +The ``py::metaclass`` attribute is not required for static properties +--------------------------------------------------------------------- + +Binding classes with static properties is now possible by default. The +zero-parameter version of ``py::metaclass()`` is deprecated. However, a new +one-parameter ``py::metaclass(python_type)`` version was added for rare +cases when a custom metaclass is needed to override pybind11's default. + +.. code-block:: cpp + + // old -- emits a deprecation warning + py::class_<Foo>(m, "Foo", py::metaclass()) + .def_property_readonly_static("foo", ...); + + // new -- static properties work without the attribute + py::class_<Foo>(m, "Foo") + .def_property_readonly_static("foo", ...); + + // new -- advanced feature, override pybind11's default metaclass + py::class_<Bar>(m, "Bar", py::metaclass(custom_python_type)) + ... + + +v2.0 +==== + +Breaking changes in ``py::class_`` +---------------------------------- + +These changes were necessary to make type definitions in pybind11 +future-proof, to support PyPy via its ``cpyext`` mechanism (`#527 +<https://github.com/pybind/pybind11/pull/527>`_), and to improve efficiency +(`rev. 86d825 <https://github.com/pybind/pybind11/commit/86d825>`_). + +1. Declarations of types that provide access via the buffer protocol must + now include the ``py::buffer_protocol()`` annotation as an argument to + the ``py::class_`` constructor. + + .. code-block:: cpp + + py::class_<Matrix>("Matrix", py::buffer_protocol()) + .def(py::init<...>()) + .def_buffer(...); + +2. Classes which include static properties (e.g. ``def_readwrite_static()``) + must now include the ``py::metaclass()`` attribute. Note: this requirement + has since been removed in v2.1. If you're upgrading from 1.x, it's + recommended to skip directly to v2.1 or newer. + +3. This version of pybind11 uses a redesigned mechanism for instantiating + trampoline classes that are used to override virtual methods from within + Python. This led to the following user-visible syntax change: + + .. code-block:: cpp + + // old v1.x syntax + py::class_<TrampolineClass>("MyClass") + .alias<MyClass>() + ... + + // new v2.x syntax + py::class_<MyClass, TrampolineClass>("MyClass") + ... + + Importantly, both the original and the trampoline class are now specified + as arguments to the ``py::class_`` template, and the ``alias<..>()`` call + is gone. The new scheme has zero overhead in cases when Python doesn't + override any functions of the underlying C++ class. + `rev. 86d825 <https://github.com/pybind/pybind11/commit/86d825>`_. + + The class type must be the first template argument given to ``py::class_`` + while the trampoline can be mixed in arbitrary order with other arguments + (see the following section). + + +Deprecation of the ``py::base<T>()`` attribute +---------------------------------------------- + +``py::base<T>()`` was deprecated in favor of specifying ``T`` as a template +argument to ``py::class_``. This new syntax also supports multiple inheritance. +Note that, while the type being exported must be the first argument in the +``py::class_<Class, ...>`` template, the order of the following types (bases, +holder and/or trampoline) is not important. + +.. code-block:: cpp + + // old v1.x + py::class_<Derived>("Derived", py::base<Base>()); + + // new v2.x + py::class_<Derived, Base>("Derived"); + + // new -- multiple inheritance + py::class_<Derived, Base1, Base2>("Derived"); + + // new -- apart from `Derived` the argument order can be arbitrary + py::class_<Derived, Base1, Holder, Base2, Trampoline>("Derived"); + + +Out-of-the-box support for ``std::shared_ptr`` +---------------------------------------------- + +The relevant type caster is now built in, so it's no longer necessary to +include a declaration of the form: + +.. code-block:: cpp + + PYBIND11_DECLARE_HOLDER_TYPE(T, std::shared_ptr<T>) + +Continuing to do so won’t cause an error or even a deprecation warning, +but it's completely redundant. + + +Deprecation of a few ``py::object`` APIs +---------------------------------------- + +All of the old-style calls emit deprecation warnings. + ++---------------------------------------+---------------------------------------------+ +| Old syntax | New syntax | ++=======================================+=============================================+ +| ``obj.call(args...)`` | ``obj(args...)`` | ++---------------------------------------+---------------------------------------------+ +| ``obj.str()`` | ``py::str(obj)`` | ++---------------------------------------+---------------------------------------------+ +| ``auto l = py::list(obj); l.check()`` | ``py::isinstance<py::list>(obj)`` | ++---------------------------------------+---------------------------------------------+ +| ``py::object(ptr, true)`` | ``py::reinterpret_borrow<py::object>(ptr)`` | ++---------------------------------------+---------------------------------------------+ +| ``py::object(ptr, false)`` | ``py::reinterpret_steal<py::object>(ptr)`` | ++---------------------------------------+---------------------------------------------+ +| ``if (obj.attr("foo"))`` | ``if (py::hasattr(obj, "foo"))`` | ++---------------------------------------+---------------------------------------------+ +| ``if (obj["bar"])`` | ``if (obj.contains("bar"))`` | ++---------------------------------------+---------------------------------------------+ diff --git a/ext/pybind11/include/pybind11/attr.h b/ext/pybind11/include/pybind11/attr.h index e38a1a32d..dce875a6b 100644 --- a/ext/pybind11/include/pybind11/attr.h +++ b/ext/pybind11/include/pybind11/attr.h @@ -1,5 +1,5 @@ /* - pybind11/pybind11.h: Infrastructure for processing custom + pybind11/attr.h: Infrastructure for processing custom type and function attributes Copyright (c) 2016 Wenzel Jakob <wenzel.jakob@epfl.ch> @@ -12,7 +12,7 @@ #include "cast.h" -NAMESPACE_BEGIN(pybind11) +NAMESPACE_BEGIN(PYBIND11_NAMESPACE) /// \addtogroup annotations /// @{ @@ -58,15 +58,56 @@ struct metaclass { handle value; PYBIND11_DEPRECATED("py::metaclass() is no longer required. It's turned on by default now.") - metaclass() = default; + metaclass() {} /// Override pybind11's default metaclass explicit metaclass(handle value) : value(value) { } }; +/// Annotation that marks a class as local to the module: +struct module_local { const bool value; constexpr module_local(bool v = true) : value(v) { } }; + /// Annotation to mark enums as an arithmetic type struct arithmetic { }; +/** \rst + A call policy which places one or more guard variables (``Ts...``) around the function call. + + For example, this definition: + + .. code-block:: cpp + + m.def("foo", foo, py::call_guard<T>()); + + is equivalent to the following pseudocode: + + .. code-block:: cpp + + m.def("foo", [](args...) { + T scope_guard; + return foo(args...); // forwarded arguments + }); + \endrst */ +template <typename... Ts> struct call_guard; + +template <> struct call_guard<> { using type = detail::void_type; }; + +template <typename T> +struct call_guard<T> { + static_assert(std::is_default_constructible<T>::value, + "The guard type must be default constructible"); + + using type = T; +}; + +template <typename T, typename... Ts> +struct call_guard<T, Ts...> { + struct type { + T guard{}; // Compose multiple guard types with left-to-right default-constructor order + typename call_guard<Ts...>::type next{}; + }; +}; + /// @} annotations NAMESPACE_BEGIN(detail) @@ -75,8 +116,6 @@ enum op_id : int; enum op_type : int; struct undefined_t; template <op_id id, op_type ot, typename L = undefined_t, typename R = undefined_t> struct op_; -template <typename... Args> struct init; -template <typename... Args> struct init_alias; inline void keep_alive_impl(size_t Nurse, size_t Patient, function_call &call, handle ret); /// Internal data structure which holds metadata about a keyword argument @@ -85,16 +124,17 @@ struct argument_record { const char *descr; ///< Human-readable version of the argument value handle value; ///< Associated Python object bool convert : 1; ///< True if the argument is allowed to convert when loading + bool none : 1; ///< True if None is allowed when loading - argument_record(const char *name, const char *descr, handle value, bool convert) - : name(name), descr(descr), value(value), convert(convert) { } + argument_record(const char *name, const char *descr, handle value, bool convert, bool none) + : name(name), descr(descr), value(value), convert(convert), none(none) { } }; /// Internal data structure which holds metadata about a bound function (signature, overloads, etc.) struct function_record { function_record() - : is_constructor(false), is_stateless(false), is_operator(false), - has_args(false), has_kwargs(false), is_method(false) { } + : is_constructor(false), is_new_style_constructor(false), is_stateless(false), + is_operator(false), has_args(false), has_kwargs(false), is_method(false) { } /// Function name char *name = nullptr; /* why no C++ strings? They generate heavier code.. */ @@ -123,6 +163,9 @@ struct function_record { /// True if name == '__init__' bool is_constructor : 1; + /// True if this is a new-style `__init__` defined in `detail/init.h` + bool is_new_style_constructor : 1; + /// True if this is a stateless function pointer bool is_stateless : 1; @@ -157,7 +200,7 @@ struct function_record { /// Special data structure which (temporarily) holds metadata about a bound class struct type_record { PYBIND11_NOINLINE type_record() - : multiple_inheritance(false), dynamic_attr(false), buffer_protocol(false) { } + : multiple_inheritance(false), dynamic_attr(false), buffer_protocol(false), module_local(false) { } /// Handle to the parent scope handle scope; @@ -171,17 +214,17 @@ struct type_record { /// How large is the underlying C++ type? size_t type_size = 0; - /// How large is pybind11::instance<type>? - size_t instance_size = 0; + /// How large is the type's holder? + size_t holder_size = 0; /// The global operator new can be overridden with a class-specific variant void *(*operator_new)(size_t) = ::operator new; - /// Function pointer to class_<..>::init_holder - void (*init_holder)(PyObject *, const void *) = nullptr; + /// Function pointer to class_<..>::init_instance + void (*init_instance)(instance *, const void *) = nullptr; /// Function pointer to class_<..>::dealloc - void (*dealloc)(PyObject *) = nullptr; + void (*dealloc)(detail::value_and_holder &) = nullptr; /// List of base classes of the newly created type list bases; @@ -204,17 +247,20 @@ struct type_record { /// Is the default (unique_ptr) holder type used? bool default_holder : 1; - PYBIND11_NOINLINE void add_base(const std::type_info *base, void *(*caster)(void *)) { - auto base_info = detail::get_type_info(*base, false); + /// Is the class definition local to the module shared object? + bool module_local : 1; + + PYBIND11_NOINLINE void add_base(const std::type_info &base, void *(*caster)(void *)) { + auto base_info = detail::get_type_info(base, false); if (!base_info) { - std::string tname(base->name()); + std::string tname(base.name()); detail::clean_type_id(tname); pybind11_fail("generic_type: type \"" + std::string(name) + "\" referenced unknown base type \"" + tname + "\""); } if (default_holder != base_info->default_holder) { - std::string tname(base->name()); + std::string tname(base.name()); detail::clean_type_id(tname); pybind11_fail("generic_type: type \"" + std::string(name) + "\" " + (default_holder ? "does not have" : "has") + @@ -228,7 +274,7 @@ struct type_record { dynamic_attr = true; if (caster) - base_info->implicit_casts.push_back(std::make_pair(type, caster)); + base_info->implicit_casts.emplace_back(type, caster); } }; @@ -238,6 +284,9 @@ inline function_call::function_call(function_record &f, handle p) : args_convert.reserve(f.nargs); } +/// Tag for a new-style `__init__` defined in `detail/init.h` +struct is_new_style_constructor { }; + /** * Partial template specializations to process custom attributes provided to * cpp_function_ and class_. These are either used to initialize the respective @@ -296,12 +345,16 @@ template <> struct process_attribute<is_operator> : process_attribute_default<is static void init(const is_operator &, function_record *r) { r->is_operator = true; } }; +template <> struct process_attribute<is_new_style_constructor> : process_attribute_default<is_new_style_constructor> { + static void init(const is_new_style_constructor &, function_record *r) { r->is_new_style_constructor = true; } +}; + /// Process a keyword argument attribute (*without* a default value) template <> struct process_attribute<arg> : process_attribute_default<arg> { static void init(const arg &a, function_record *r) { if (r->is_method && r->args.empty()) - r->args.emplace_back("self", nullptr, handle(), true /*convert*/); - r->args.emplace_back(a.name, nullptr, handle(), !a.flag_noconvert); + r->args.emplace_back("self", nullptr, handle(), true /*convert*/, false /*none not allowed*/); + r->args.emplace_back(a.name, nullptr, handle(), !a.flag_noconvert, a.flag_none); } }; @@ -309,7 +362,7 @@ template <> struct process_attribute<arg> : process_attribute_default<arg> { template <> struct process_attribute<arg_v> : process_attribute_default<arg_v> { static void init(const arg_v &a, function_record *r) { if (r->is_method && r->args.empty()) - r->args.emplace_back("self", nullptr /*descr*/, handle() /*parent*/, true /*convert*/); + r->args.emplace_back("self", nullptr /*descr*/, handle() /*parent*/, true /*convert*/, false /*none not allowed*/); if (!a.value) { #if !defined(NDEBUG) @@ -332,7 +385,7 @@ template <> struct process_attribute<arg_v> : process_attribute_default<arg_v> { "Compile in debug mode for more information."); #endif } - r->args.emplace_back(a.name, a.descr, a.value.inc_ref(), !a.flag_noconvert); + r->args.emplace_back(a.name, a.descr, a.value.inc_ref(), !a.flag_noconvert, a.flag_none); } }; @@ -345,7 +398,7 @@ struct process_attribute<T, enable_if_t<is_pyobject<T>::value>> : process_attrib /// Process a parent class attribute (deprecated, does not support multiple inheritance) template <typename T> struct process_attribute<base<T>> : process_attribute_default<base<T>> { - static void init(const base<T> &, type_record *r) { r->add_base(&typeid(T), nullptr); } + static void init(const base<T> &, type_record *r) { r->add_base(typeid(T), nullptr); } }; /// Process a multiple inheritance attribute @@ -369,12 +422,19 @@ struct process_attribute<metaclass> : process_attribute_default<metaclass> { static void init(const metaclass &m, type_record *r) { r->metaclass = m.value; } }; +template <> +struct process_attribute<module_local> : process_attribute_default<module_local> { + static void init(const module_local &l, type_record *r) { r->module_local = l.value; } +}; /// Process an 'arithmetic' attribute for enums (does nothing here) template <> struct process_attribute<arithmetic> : process_attribute_default<arithmetic> {}; -/*** +template <typename... Ts> +struct process_attribute<call_guard<Ts...>> : process_attribute_default<call_guard<Ts...>> { }; + +/** * Process a keep_alive call policy -- invokes keep_alive_impl during the * pre-call handler if both Nurse, Patient != 0 and use the post-call handler * otherwise @@ -410,6 +470,13 @@ template <typename... Args> struct process_attributes { } }; +template <typename T> +using is_call_guard = is_instantiation<call_guard, T>; + +/// Extract the ``type`` from the first `call_guard` in `Extras...` (or `void_type` if none found) +template <typename... Extra> +using extract_guard_t = typename exactly_one_t<is_call_guard, call_guard<>, Extra...>::type; + /// Check the number of named arguments at compile time template <typename... Extra, size_t named = constexpr_sum(std::is_base_of<arg, Extra>::value...), @@ -419,4 +486,4 @@ constexpr bool expected_num_args(size_t nargs, bool has_args, bool has_kwargs) { } NAMESPACE_END(detail) -NAMESPACE_END(pybind11) +NAMESPACE_END(PYBIND11_NAMESPACE) diff --git a/ext/pybind11/include/pybind11/buffer_info.h b/ext/pybind11/include/pybind11/buffer_info.h new file mode 100644 index 000000000..9f072fa73 --- /dev/null +++ b/ext/pybind11/include/pybind11/buffer_info.h @@ -0,0 +1,108 @@ +/* + pybind11/buffer_info.h: Python buffer object interface + + Copyright (c) 2016 Wenzel Jakob <wenzel.jakob@epfl.ch> + + All rights reserved. Use of this source code is governed by a + BSD-style license that can be found in the LICENSE file. +*/ + +#pragma once + +#include "detail/common.h" + +NAMESPACE_BEGIN(PYBIND11_NAMESPACE) + +/// Information record describing a Python buffer object +struct buffer_info { + void *ptr = nullptr; // Pointer to the underlying storage + ssize_t itemsize = 0; // Size of individual items in bytes + ssize_t size = 0; // Total number of entries + std::string format; // For homogeneous buffers, this should be set to format_descriptor<T>::format() + ssize_t ndim = 0; // Number of dimensions + std::vector<ssize_t> shape; // Shape of the tensor (1 entry per dimension) + std::vector<ssize_t> strides; // Number of entries between adjacent entries (for each per dimension) + + buffer_info() { } + + buffer_info(void *ptr, ssize_t itemsize, const std::string &format, ssize_t ndim, + detail::any_container<ssize_t> shape_in, detail::any_container<ssize_t> strides_in) + : ptr(ptr), itemsize(itemsize), size(1), format(format), ndim(ndim), + shape(std::move(shape_in)), strides(std::move(strides_in)) { + if (ndim != (ssize_t) shape.size() || ndim != (ssize_t) strides.size()) + pybind11_fail("buffer_info: ndim doesn't match shape and/or strides length"); + for (size_t i = 0; i < (size_t) ndim; ++i) + size *= shape[i]; + } + + template <typename T> + buffer_info(T *ptr, detail::any_container<ssize_t> shape_in, detail::any_container<ssize_t> strides_in) + : buffer_info(private_ctr_tag(), ptr, sizeof(T), format_descriptor<T>::format(), static_cast<ssize_t>(shape_in->size()), std::move(shape_in), std::move(strides_in)) { } + + buffer_info(void *ptr, ssize_t itemsize, const std::string &format, ssize_t size) + : buffer_info(ptr, itemsize, format, 1, {size}, {itemsize}) { } + + template <typename T> + buffer_info(T *ptr, ssize_t size) + : buffer_info(ptr, sizeof(T), format_descriptor<T>::format(), size) { } + + explicit buffer_info(Py_buffer *view, bool ownview = true) + : buffer_info(view->buf, view->itemsize, view->format, view->ndim, + {view->shape, view->shape + view->ndim}, {view->strides, view->strides + view->ndim}) { + this->view = view; + this->ownview = ownview; + } + + buffer_info(const buffer_info &) = delete; + buffer_info& operator=(const buffer_info &) = delete; + + buffer_info(buffer_info &&other) { + (*this) = std::move(other); + } + + buffer_info& operator=(buffer_info &&rhs) { + ptr = rhs.ptr; + itemsize = rhs.itemsize; + size = rhs.size; + format = std::move(rhs.format); + ndim = rhs.ndim; + shape = std::move(rhs.shape); + strides = std::move(rhs.strides); + std::swap(view, rhs.view); + std::swap(ownview, rhs.ownview); + return *this; + } + + ~buffer_info() { + if (view && ownview) { PyBuffer_Release(view); delete view; } + } + +private: + struct private_ctr_tag { }; + + buffer_info(private_ctr_tag, void *ptr, ssize_t itemsize, const std::string &format, ssize_t ndim, + detail::any_container<ssize_t> &&shape_in, detail::any_container<ssize_t> &&strides_in) + : buffer_info(ptr, itemsize, format, ndim, std::move(shape_in), std::move(strides_in)) { } + + Py_buffer *view = nullptr; + bool ownview = false; +}; + +NAMESPACE_BEGIN(detail) + +template <typename T, typename SFINAE = void> struct compare_buffer_info { + static bool compare(const buffer_info& b) { + return b.format == format_descriptor<T>::format() && b.itemsize == (ssize_t) sizeof(T); + } +}; + +template <typename T> struct compare_buffer_info<T, detail::enable_if_t<std::is_integral<T>::value>> { + static bool compare(const buffer_info& b) { + return (size_t) b.itemsize == sizeof(T) && (b.format == format_descriptor<T>::value || + ((sizeof(T) == sizeof(long)) && b.format == (std::is_unsigned<T>::value ? "L" : "l")) || + ((sizeof(T) == sizeof(size_t)) && b.format == (std::is_unsigned<T>::value ? "N" : "n"))); + } +}; + +NAMESPACE_END(detail) +NAMESPACE_END(PYBIND11_NAMESPACE) diff --git a/ext/pybind11/include/pybind11/cast.h b/ext/pybind11/include/pybind11/cast.h index fe19075e4..eab904bee 100644 --- a/ext/pybind11/include/pybind11/cast.h +++ b/ext/pybind11/include/pybind11/cast.h @@ -11,97 +11,184 @@ #pragma once #include "pytypes.h" -#include "typeid.h" -#include "descr.h" +#include "detail/typeid.h" +#include "detail/descr.h" +#include "detail/internals.h" #include <array> #include <limits> +#include <tuple> + +#if defined(PYBIND11_CPP17) +# if defined(__has_include) +# if __has_include(<string_view>) +# define PYBIND11_HAS_STRING_VIEW +# endif +# elif defined(_MSC_VER) +# define PYBIND11_HAS_STRING_VIEW +# endif +#endif +#ifdef PYBIND11_HAS_STRING_VIEW +#include <string_view> +#endif -NAMESPACE_BEGIN(pybind11) +NAMESPACE_BEGIN(PYBIND11_NAMESPACE) NAMESPACE_BEGIN(detail) -inline PyTypeObject *make_static_property_type(); -inline PyTypeObject *make_default_metaclass(); - -/// Additional type information which does not fit into the PyTypeObject -struct type_info { - PyTypeObject *type; - size_t type_size; - void *(*operator_new)(size_t); - void (*init_holder)(PyObject *, const void *); - void (*dealloc)(PyObject *); - std::vector<PyObject *(*)(PyObject *, PyTypeObject *)> implicit_conversions; - std::vector<std::pair<const std::type_info *, void *(*)(void *)>> implicit_casts; - std::vector<bool (*)(PyObject *, void *&)> *direct_conversions; - buffer_info *(*get_buffer)(PyObject *, void *) = nullptr; - void *get_buffer_data = nullptr; - /** A simple type never occurs as a (direct or indirect) parent - * of a class that makes use of multiple inheritance */ - bool simple_type = true; - /* for base vs derived holder_type checks */ - bool default_holder = true; + +/// A life support system for temporary objects created by `type_caster::load()`. +/// Adding a patient will keep it alive up until the enclosing function returns. +class loader_life_support { +public: + /// A new patient frame is created when a function is entered + loader_life_support() { + get_internals().loader_patient_stack.push_back(nullptr); + } + + /// ... and destroyed after it returns + ~loader_life_support() { + auto &stack = get_internals().loader_patient_stack; + if (stack.empty()) + pybind11_fail("loader_life_support: internal error"); + + auto ptr = stack.back(); + stack.pop_back(); + Py_CLEAR(ptr); + + // A heuristic to reduce the stack's capacity (e.g. after long recursive calls) + if (stack.capacity() > 16 && stack.size() != 0 && stack.capacity() / stack.size() > 2) + stack.shrink_to_fit(); + } + + /// This can only be used inside a pybind11-bound function, either by `argument_loader` + /// at argument preparation time or by `py::cast()` at execution time. + PYBIND11_NOINLINE static void add_patient(handle h) { + auto &stack = get_internals().loader_patient_stack; + if (stack.empty()) + throw cast_error("When called outside a bound function, py::cast() cannot " + "do Python -> C++ conversions which require the creation " + "of temporary values"); + + auto &list_ptr = stack.back(); + if (list_ptr == nullptr) { + list_ptr = PyList_New(1); + if (!list_ptr) + pybind11_fail("loader_life_support: error allocating list"); + PyList_SET_ITEM(list_ptr, 0, h.inc_ref().ptr()); + } else { + auto result = PyList_Append(list_ptr, h.ptr()); + if (result == -1) + pybind11_fail("loader_life_support: error adding patient"); + } + } }; -PYBIND11_NOINLINE inline internals &get_internals() { - static internals *internals_ptr = nullptr; - if (internals_ptr) - return *internals_ptr; - handle builtins(PyEval_GetBuiltins()); - const char *id = PYBIND11_INTERNALS_ID; - if (builtins.contains(id) && isinstance<capsule>(builtins[id])) { - internals_ptr = capsule(builtins[id]); - } else { - internals_ptr = new internals(); - #if defined(WITH_THREAD) - PyEval_InitThreads(); - PyThreadState *tstate = PyThreadState_Get(); - internals_ptr->tstate = PyThread_create_key(); - PyThread_set_key_value(internals_ptr->tstate, tstate); - internals_ptr->istate = tstate->interp; - #endif - builtins[id] = capsule(internals_ptr); - internals_ptr->registered_exception_translators.push_front( - [](std::exception_ptr p) -> void { - try { - if (p) std::rethrow_exception(p); - } catch (error_already_set &e) { e.restore(); return; - } catch (const builtin_exception &e) { e.set_error(); return; - } catch (const std::bad_alloc &e) { PyErr_SetString(PyExc_MemoryError, e.what()); return; - } catch (const std::domain_error &e) { PyErr_SetString(PyExc_ValueError, e.what()); return; - } catch (const std::invalid_argument &e) { PyErr_SetString(PyExc_ValueError, e.what()); return; - } catch (const std::length_error &e) { PyErr_SetString(PyExc_ValueError, e.what()); return; - } catch (const std::out_of_range &e) { PyErr_SetString(PyExc_IndexError, e.what()); return; - } catch (const std::range_error &e) { PyErr_SetString(PyExc_ValueError, e.what()); return; - } catch (const std::exception &e) { PyErr_SetString(PyExc_RuntimeError, e.what()); return; - } catch (...) { - PyErr_SetString(PyExc_RuntimeError, "Caught an unknown exception!"); - return; +// Gets the cache entry for the given type, creating it if necessary. The return value is the pair +// returned by emplace, i.e. an iterator for the entry and a bool set to `true` if the entry was +// just created. +inline std::pair<decltype(internals::registered_types_py)::iterator, bool> all_type_info_get_cache(PyTypeObject *type); + +// Populates a just-created cache entry. +PYBIND11_NOINLINE inline void all_type_info_populate(PyTypeObject *t, std::vector<type_info *> &bases) { + std::vector<PyTypeObject *> check; + for (handle parent : reinterpret_borrow<tuple>(t->tp_bases)) + check.push_back((PyTypeObject *) parent.ptr()); + + auto const &type_dict = get_internals().registered_types_py; + for (size_t i = 0; i < check.size(); i++) { + auto type = check[i]; + // Ignore Python2 old-style class super type: + if (!PyType_Check((PyObject *) type)) continue; + + // Check `type` in the current set of registered python types: + auto it = type_dict.find(type); + if (it != type_dict.end()) { + // We found a cache entry for it, so it's either pybind-registered or has pre-computed + // pybind bases, but we have to make sure we haven't already seen the type(s) before: we + // want to follow Python/virtual C++ rules that there should only be one instance of a + // common base. + for (auto *tinfo : it->second) { + // NB: Could use a second set here, rather than doing a linear search, but since + // having a large number of immediate pybind11-registered types seems fairly + // unlikely, that probably isn't worthwhile. + bool found = false; + for (auto *known : bases) { + if (known == tinfo) { found = true; break; } } + if (!found) bases.push_back(tinfo); + } + } + else if (type->tp_bases) { + // It's some python type, so keep follow its bases classes to look for one or more + // registered types + if (i + 1 == check.size()) { + // When we're at the end, we can pop off the current element to avoid growing + // `check` when adding just one base (which is typical--i.e. when there is no + // multiple inheritance) + check.pop_back(); + i--; } - ); - internals_ptr->static_property_type = make_static_property_type(); - internals_ptr->default_metaclass = make_default_metaclass(); + for (handle parent : reinterpret_borrow<tuple>(type->tp_bases)) + check.push_back((PyTypeObject *) parent.ptr()); + } } - return *internals_ptr; } +/** + * Extracts vector of type_info pointers of pybind-registered roots of the given Python type. Will + * be just 1 pybind type for the Python type of a pybind-registered class, or for any Python-side + * derived class that uses single inheritance. Will contain as many types as required for a Python + * class that uses multiple inheritance to inherit (directly or indirectly) from multiple + * pybind-registered classes. Will be empty if neither the type nor any base classes are + * pybind-registered. + * + * The value is cached for the lifetime of the Python type. + */ +inline const std::vector<detail::type_info *> &all_type_info(PyTypeObject *type) { + auto ins = all_type_info_get_cache(type); + if (ins.second) + // New cache entry: populate it + all_type_info_populate(type, ins.first->second); + + return ins.first->second; +} + +/** + * Gets a single pybind11 type info for a python type. Returns nullptr if neither the type nor any + * ancestors are pybind11-registered. Throws an exception if there are multiple bases--use + * `all_type_info` instead if you want to support multiple bases. + */ PYBIND11_NOINLINE inline detail::type_info* get_type_info(PyTypeObject *type) { - auto const &type_dict = get_internals().registered_types_py; - do { - auto it = type_dict.find(type); - if (it != type_dict.end()) - return (detail::type_info *) it->second; - type = type->tp_base; - if (!type) - return nullptr; - } while (true); + auto &bases = all_type_info(type); + if (bases.size() == 0) + return nullptr; + if (bases.size() > 1) + pybind11_fail("pybind11::detail::get_type_info: type has multiple pybind11-registered bases"); + return bases.front(); } -PYBIND11_NOINLINE inline detail::type_info *get_type_info(const std::type_info &tp, - bool throw_if_missing = false) { - auto &types = get_internals().registered_types_cpp; +inline detail::type_info *get_local_type_info(const std::type_index &tp) { + auto &locals = registered_local_types_cpp(); + auto it = locals.find(tp); + if (it != locals.end()) + return it->second; + return nullptr; +} - auto it = types.find(std::type_index(tp)); +inline detail::type_info *get_global_type_info(const std::type_index &tp) { + auto &types = get_internals().registered_types_cpp; + auto it = types.find(tp); if (it != types.end()) - return (detail::type_info *) it->second; + return it->second; + return nullptr; +} + +/// Return the type info for a given C++ type; on lookup failure can either throw or return nullptr. +PYBIND11_NOINLINE inline detail::type_info *get_type_info(const std::type_index &tp, + bool throw_if_missing = false) { + if (auto ltype = get_local_type_info(tp)) + return ltype; + if (auto gtype = get_global_type_info(tp)) + return gtype; + if (throw_if_missing) { std::string tname = tp.name(); detail::clean_type_id(tname); @@ -115,6 +202,199 @@ PYBIND11_NOINLINE inline handle get_type_handle(const std::type_info &tp, bool t return handle(type_info ? ((PyObject *) type_info->type) : nullptr); } +struct value_and_holder { + instance *inst; + size_t index; + const detail::type_info *type; + void **vh; + + // Main constructor for a found value/holder: + value_and_holder(instance *i, const detail::type_info *type, size_t vpos, size_t index) : + inst{i}, index{index}, type{type}, + vh{inst->simple_layout ? inst->simple_value_holder : &inst->nonsimple.values_and_holders[vpos]} + {} + + // Default constructor (used to signal a value-and-holder not found by get_value_and_holder()) + value_and_holder() : inst{nullptr} {} + + // Used for past-the-end iterator + value_and_holder(size_t index) : index{index} {} + + template <typename V = void> V *&value_ptr() const { + return reinterpret_cast<V *&>(vh[0]); + } + // True if this `value_and_holder` has a non-null value pointer + explicit operator bool() const { return value_ptr(); } + + template <typename H> H &holder() const { + return reinterpret_cast<H &>(vh[1]); + } + bool holder_constructed() const { + return inst->simple_layout + ? inst->simple_holder_constructed + : inst->nonsimple.status[index] & instance::status_holder_constructed; + } + void set_holder_constructed(bool v = true) { + if (inst->simple_layout) + inst->simple_holder_constructed = v; + else if (v) + inst->nonsimple.status[index] |= instance::status_holder_constructed; + else + inst->nonsimple.status[index] &= (uint8_t) ~instance::status_holder_constructed; + } + bool instance_registered() const { + return inst->simple_layout + ? inst->simple_instance_registered + : inst->nonsimple.status[index] & instance::status_instance_registered; + } + void set_instance_registered(bool v = true) { + if (inst->simple_layout) + inst->simple_instance_registered = v; + else if (v) + inst->nonsimple.status[index] |= instance::status_instance_registered; + else + inst->nonsimple.status[index] &= (uint8_t) ~instance::status_instance_registered; + } +}; + +// Container for accessing and iterating over an instance's values/holders +struct values_and_holders { +private: + instance *inst; + using type_vec = std::vector<detail::type_info *>; + const type_vec &tinfo; + +public: + values_and_holders(instance *inst) : inst{inst}, tinfo(all_type_info(Py_TYPE(inst))) {} + + struct iterator { + private: + instance *inst; + const type_vec *types; + value_and_holder curr; + friend struct values_and_holders; + iterator(instance *inst, const type_vec *tinfo) + : inst{inst}, types{tinfo}, + curr(inst /* instance */, + types->empty() ? nullptr : (*types)[0] /* type info */, + 0, /* vpos: (non-simple types only): the first vptr comes first */ + 0 /* index */) + {} + // Past-the-end iterator: + iterator(size_t end) : curr(end) {} + public: + bool operator==(const iterator &other) { return curr.index == other.curr.index; } + bool operator!=(const iterator &other) { return curr.index != other.curr.index; } + iterator &operator++() { + if (!inst->simple_layout) + curr.vh += 1 + (*types)[curr.index]->holder_size_in_ptrs; + ++curr.index; + curr.type = curr.index < types->size() ? (*types)[curr.index] : nullptr; + return *this; + } + value_and_holder &operator*() { return curr; } + value_and_holder *operator->() { return &curr; } + }; + + iterator begin() { return iterator(inst, &tinfo); } + iterator end() { return iterator(tinfo.size()); } + + iterator find(const type_info *find_type) { + auto it = begin(), endit = end(); + while (it != endit && it->type != find_type) ++it; + return it; + } + + size_t size() { return tinfo.size(); } +}; + +/** + * Extracts C++ value and holder pointer references from an instance (which may contain multiple + * values/holders for python-side multiple inheritance) that match the given type. Throws an error + * if the given type (or ValueType, if omitted) is not a pybind11 base of the given instance. If + * `find_type` is omitted (or explicitly specified as nullptr) the first value/holder are returned, + * regardless of type (and the resulting .type will be nullptr). + * + * The returned object should be short-lived: in particular, it must not outlive the called-upon + * instance. + */ +PYBIND11_NOINLINE inline value_and_holder instance::get_value_and_holder(const type_info *find_type /*= nullptr default in common.h*/, bool throw_if_missing /*= true in common.h*/) { + // Optimize common case: + if (!find_type || Py_TYPE(this) == find_type->type) + return value_and_holder(this, find_type, 0, 0); + + detail::values_and_holders vhs(this); + auto it = vhs.find(find_type); + if (it != vhs.end()) + return *it; + + if (!throw_if_missing) + return value_and_holder(); + +#if defined(NDEBUG) + pybind11_fail("pybind11::detail::instance::get_value_and_holder: " + "type is not a pybind11 base of the given instance " + "(compile in debug mode for type details)"); +#else + pybind11_fail("pybind11::detail::instance::get_value_and_holder: `" + + std::string(find_type->type->tp_name) + "' is not a pybind11 base of the given `" + + std::string(Py_TYPE(this)->tp_name) + "' instance"); +#endif +} + +PYBIND11_NOINLINE inline void instance::allocate_layout() { + auto &tinfo = all_type_info(Py_TYPE(this)); + + const size_t n_types = tinfo.size(); + + if (n_types == 0) + pybind11_fail("instance allocation failed: new instance has no pybind11-registered base types"); + + simple_layout = + n_types == 1 && tinfo.front()->holder_size_in_ptrs <= instance_simple_holder_in_ptrs(); + + // Simple path: no python-side multiple inheritance, and a small-enough holder + if (simple_layout) { + simple_value_holder[0] = nullptr; + simple_holder_constructed = false; + simple_instance_registered = false; + } + else { // multiple base types or a too-large holder + // Allocate space to hold: [v1*][h1][v2*][h2]...[bb...] where [vN*] is a value pointer, + // [hN] is the (uninitialized) holder instance for value N, and [bb...] is a set of bool + // values that tracks whether each associated holder has been initialized. Each [block] is + // padded, if necessary, to an integer multiple of sizeof(void *). + size_t space = 0; + for (auto t : tinfo) { + space += 1; // value pointer + space += t->holder_size_in_ptrs; // holder instance + } + size_t flags_at = space; + space += size_in_ptrs(n_types); // status bytes (holder_constructed and instance_registered) + + // Allocate space for flags, values, and holders, and initialize it to 0 (flags and values, + // in particular, need to be 0). Use Python's memory allocation functions: in Python 3.6 + // they default to using pymalloc, which is designed to be efficient for small allocations + // like the one we're doing here; in earlier versions (and for larger allocations) they are + // just wrappers around malloc. +#if PY_VERSION_HEX >= 0x03050000 + nonsimple.values_and_holders = (void **) PyMem_Calloc(space, sizeof(void *)); + if (!nonsimple.values_and_holders) throw std::bad_alloc(); +#else + nonsimple.values_and_holders = (void **) PyMem_New(void *, space); + if (!nonsimple.values_and_holders) throw std::bad_alloc(); + std::memset(nonsimple.values_and_holders, 0, space * sizeof(void *)); +#endif + nonsimple.status = reinterpret_cast<uint8_t *>(&nonsimple.values_and_holders[flags_at]); + } + owned = true; +} + +PYBIND11_NOINLINE inline void instance::deallocate_layout() { + if (!simple_layout) + PyMem_Free(nonsimple.values_and_holders); +} + PYBIND11_NOINLINE inline bool isinstance_generic(handle obj, const std::type_info &tp) { handle type = detail::get_type_handle(tp, false); if (!type) @@ -163,7 +443,6 @@ PYBIND11_NOINLINE inline std::string error_string() { handle(frame->f_code->co_name).cast<std::string>() + "\n"; frame = frame->f_back; } - trace = trace->tb_next; } #endif @@ -174,9 +453,10 @@ PYBIND11_NOINLINE inline handle get_object_handle(const void *ptr, const detail: auto &instances = get_internals().registered_instances; auto range = instances.equal_range(ptr); for (auto it = range.first; it != range.second; ++it) { - auto instance_type = detail::get_type_info(Py_TYPE(it->second)); - if (instance_type && instance_type == type) - return handle((PyObject *) it->second); + for (auto vh : values_and_holders(it->second)) { + if (vh.type == type) + return handle((PyObject *) it->second); + } } return handle(); } @@ -195,136 +475,63 @@ inline PyThreadState *get_thread_state_unchecked() { #endif } -// Forward declaration +// Forward declarations inline void keep_alive_impl(handle nurse, handle patient); +inline PyObject *make_new_instance(PyTypeObject *type); class type_caster_generic { public: PYBIND11_NOINLINE type_caster_generic(const std::type_info &type_info) - : typeinfo(get_type_info(type_info)) { } - - PYBIND11_NOINLINE bool load(handle src, bool convert) { - if (!src) - return false; - return load(src, convert, Py_TYPE(src.ptr())); - } - - bool load(handle src, bool convert, PyTypeObject *tobj) { - if (!src || !typeinfo) - return false; - if (src.is_none()) { - value = nullptr; - return true; - } + : typeinfo(get_type_info(type_info)), cpptype(&type_info) { } - if (typeinfo->simple_type) { /* Case 1: no multiple inheritance etc. involved */ - /* Check if we can safely perform a reinterpret-style cast */ - if (PyType_IsSubtype(tobj, typeinfo->type)) { - value = reinterpret_cast<instance<void> *>(src.ptr())->value; - return true; - } - } else { /* Case 2: multiple inheritance */ - /* Check if we can safely perform a reinterpret-style cast */ - if (tobj == typeinfo->type) { - value = reinterpret_cast<instance<void> *>(src.ptr())->value; - return true; - } + type_caster_generic(const type_info *typeinfo) + : typeinfo(typeinfo), cpptype(typeinfo ? typeinfo->cpptype : nullptr) { } - /* If this is a python class, also check the parents recursively */ - auto const &type_dict = get_internals().registered_types_py; - bool new_style_class = PyType_Check((PyObject *) tobj); - if (type_dict.find(tobj) == type_dict.end() && new_style_class && tobj->tp_bases) { - auto parents = reinterpret_borrow<tuple>(tobj->tp_bases); - for (handle parent : parents) { - bool result = load(src, convert, (PyTypeObject *) parent.ptr()); - if (result) - return true; - } - } - - /* Try implicit casts */ - for (auto &cast : typeinfo->implicit_casts) { - type_caster_generic sub_caster(*cast.first); - if (sub_caster.load(src, convert)) { - value = cast.second(sub_caster.value); - return true; - } - } - } - - /* Perform an implicit conversion */ - if (convert) { - for (auto &converter : typeinfo->implicit_conversions) { - temp = reinterpret_steal<object>(converter(src.ptr(), typeinfo->type)); - if (load(temp, false)) - return true; - } - for (auto &converter : *typeinfo->direct_conversions) { - if (converter(src.ptr(), value)) - return true; - } - } - return false; + bool load(handle src, bool convert) { + return load_impl<type_caster_generic>(src, convert); } PYBIND11_NOINLINE static handle cast(const void *_src, return_value_policy policy, handle parent, - const std::type_info *type_info, - const std::type_info *type_info_backup, + const detail::type_info *tinfo, void *(*copy_constructor)(const void *), void *(*move_constructor)(const void *), const void *existing_holder = nullptr) { - void *src = const_cast<void *>(_src); - if (src == nullptr) - return none().inc_ref(); - - auto &internals = get_internals(); - - auto it = internals.registered_types_cpp.find(std::type_index(*type_info)); - if (it == internals.registered_types_cpp.end()) { - type_info = type_info_backup; - it = internals.registered_types_cpp.find(std::type_index(*type_info)); - } - - if (it == internals.registered_types_cpp.end()) { - std::string tname = type_info->name(); - detail::clean_type_id(tname); - std::string msg = "Unregistered type : " + tname; - PyErr_SetString(PyExc_TypeError, msg.c_str()); + if (!tinfo) // no type info: error will be set already return handle(); - } - auto tinfo = (const detail::type_info *) it->second; + void *src = const_cast<void *>(_src); + if (src == nullptr) + return none().release(); - auto it_instances = internals.registered_instances.equal_range(src); + auto it_instances = get_internals().registered_instances.equal_range(src); for (auto it_i = it_instances.first; it_i != it_instances.second; ++it_i) { - auto instance_type = detail::get_type_info(Py_TYPE(it_i->second)); - if (instance_type && instance_type == tinfo) - return handle((PyObject *) it_i->second).inc_ref(); + for (auto instance_type : detail::all_type_info(Py_TYPE(it_i->second))) { + if (instance_type && same_type(*instance_type->cpptype, *tinfo->cpptype)) + return handle((PyObject *) it_i->second).inc_ref(); + } } - auto inst = reinterpret_steal<object>(PyType_GenericAlloc(tinfo->type, 0)); - - auto wrapper = (instance<void> *) inst.ptr(); - - wrapper->value = nullptr; + auto inst = reinterpret_steal<object>(make_new_instance(tinfo->type)); + auto wrapper = reinterpret_cast<instance *>(inst.ptr()); wrapper->owned = false; + void *&valueptr = values_and_holders(wrapper).begin()->value_ptr(); switch (policy) { case return_value_policy::automatic: case return_value_policy::take_ownership: - wrapper->value = src; + valueptr = src; wrapper->owned = true; break; case return_value_policy::automatic_reference: case return_value_policy::reference: - wrapper->value = src; + valueptr = src; wrapper->owned = false; break; case return_value_policy::copy: if (copy_constructor) - wrapper->value = copy_constructor(src); + valueptr = copy_constructor(src); else throw cast_error("return_value_policy = copy, but the " "object is non-copyable!"); @@ -333,9 +540,9 @@ public: case return_value_policy::move: if (move_constructor) - wrapper->value = move_constructor(src); + valueptr = move_constructor(src); else if (copy_constructor) - wrapper->value = copy_constructor(src); + valueptr = copy_constructor(src); else throw cast_error("return_value_policy = move, but the " "object is neither movable nor copyable!"); @@ -343,33 +550,210 @@ public: break; case return_value_policy::reference_internal: - wrapper->value = src; + valueptr = src; wrapper->owned = false; - detail::keep_alive_impl(inst, parent); + keep_alive_impl(inst, parent); break; default: throw cast_error("unhandled return_value_policy: should not happen!"); } - tinfo->init_holder(inst.ptr(), existing_holder); - - internals.registered_instances.emplace(wrapper->value, inst.ptr()); + tinfo->init_instance(wrapper, existing_holder); return inst.release(); } -protected: + // Base methods for generic caster; there are overridden in copyable_holder_caster + void load_value(value_and_holder &&v_h) { + auto *&vptr = v_h.value_ptr(); + // Lazy allocation for unallocated values: + if (vptr == nullptr) { + auto *type = v_h.type ? v_h.type : typeinfo; + vptr = type->operator_new(type->type_size); + } + value = vptr; + } + bool try_implicit_casts(handle src, bool convert) { + for (auto &cast : typeinfo->implicit_casts) { + type_caster_generic sub_caster(*cast.first); + if (sub_caster.load(src, convert)) { + value = cast.second(sub_caster.value); + return true; + } + } + return false; + } + bool try_direct_conversions(handle src) { + for (auto &converter : *typeinfo->direct_conversions) { + if (converter(src.ptr(), value)) + return true; + } + return false; + } + void check_holder_compat() {} + + PYBIND11_NOINLINE static void *local_load(PyObject *src, const type_info *ti) { + auto caster = type_caster_generic(ti); + if (caster.load(src, false)) + return caster.value; + return nullptr; + } + + /// Try to load with foreign typeinfo, if available. Used when there is no + /// native typeinfo, or when the native one wasn't able to produce a value. + PYBIND11_NOINLINE bool try_load_foreign_module_local(handle src) { + constexpr auto *local_key = PYBIND11_MODULE_LOCAL_ID; + const auto pytype = src.get_type(); + if (!hasattr(pytype, local_key)) + return false; + + type_info *foreign_typeinfo = reinterpret_borrow<capsule>(getattr(pytype, local_key)); + // Only consider this foreign loader if actually foreign and is a loader of the correct cpp type + if (foreign_typeinfo->module_local_load == &local_load + || (cpptype && !same_type(*cpptype, *foreign_typeinfo->cpptype))) + return false; + + if (auto result = foreign_typeinfo->module_local_load(src.ptr(), foreign_typeinfo)) { + value = result; + return true; + } + return false; + } + + // Implementation of `load`; this takes the type of `this` so that it can dispatch the relevant + // bits of code between here and copyable_holder_caster where the two classes need different + // logic (without having to resort to virtual inheritance). + template <typename ThisT> + PYBIND11_NOINLINE bool load_impl(handle src, bool convert) { + if (!src) return false; + if (!typeinfo) return try_load_foreign_module_local(src); + if (src.is_none()) { + // Defer accepting None to other overloads (if we aren't in convert mode): + if (!convert) return false; + value = nullptr; + return true; + } + + auto &this_ = static_cast<ThisT &>(*this); + this_.check_holder_compat(); + + PyTypeObject *srctype = Py_TYPE(src.ptr()); + + // Case 1: If src is an exact type match for the target type then we can reinterpret_cast + // the instance's value pointer to the target type: + if (srctype == typeinfo->type) { + this_.load_value(reinterpret_cast<instance *>(src.ptr())->get_value_and_holder()); + return true; + } + // Case 2: We have a derived class + else if (PyType_IsSubtype(srctype, typeinfo->type)) { + auto &bases = all_type_info(srctype); + bool no_cpp_mi = typeinfo->simple_type; + + // Case 2a: the python type is a Python-inherited derived class that inherits from just + // one simple (no MI) pybind11 class, or is an exact match, so the C++ instance is of + // the right type and we can use reinterpret_cast. + // (This is essentially the same as case 2b, but because not using multiple inheritance + // is extremely common, we handle it specially to avoid the loop iterator and type + // pointer lookup overhead) + if (bases.size() == 1 && (no_cpp_mi || bases.front()->type == typeinfo->type)) { + this_.load_value(reinterpret_cast<instance *>(src.ptr())->get_value_and_holder()); + return true; + } + // Case 2b: the python type inherits from multiple C++ bases. Check the bases to see if + // we can find an exact match (or, for a simple C++ type, an inherited match); if so, we + // can safely reinterpret_cast to the relevant pointer. + else if (bases.size() > 1) { + for (auto base : bases) { + if (no_cpp_mi ? PyType_IsSubtype(base->type, typeinfo->type) : base->type == typeinfo->type) { + this_.load_value(reinterpret_cast<instance *>(src.ptr())->get_value_and_holder(base)); + return true; + } + } + } + + // Case 2c: C++ multiple inheritance is involved and we couldn't find an exact type match + // in the registered bases, above, so try implicit casting (needed for proper C++ casting + // when MI is involved). + if (this_.try_implicit_casts(src, convert)) + return true; + } + + // Perform an implicit conversion + if (convert) { + for (auto &converter : typeinfo->implicit_conversions) { + auto temp = reinterpret_steal<object>(converter(src.ptr(), typeinfo->type)); + if (load_impl<ThisT>(temp, false)) { + loader_life_support::add_patient(temp); + return true; + } + } + if (this_.try_direct_conversions(src)) + return true; + } + + // Failed to match local typeinfo. Try again with global. + if (typeinfo->module_local) { + if (auto gtype = get_global_type_info(*typeinfo->cpptype)) { + typeinfo = gtype; + return load(src, false); + } + } + + // Global typeinfo has precedence over foreign module_local + return try_load_foreign_module_local(src); + } + + + // Called to do type lookup and wrap the pointer and type in a pair when a dynamic_cast + // isn't needed or can't be used. If the type is unknown, sets the error and returns a pair + // with .second = nullptr. (p.first = nullptr is not an error: it becomes None). + PYBIND11_NOINLINE static std::pair<const void *, const type_info *> src_and_type( + const void *src, const std::type_info &cast_type, const std::type_info *rtti_type = nullptr) { + if (auto *tpi = get_type_info(cast_type)) + return {src, const_cast<const type_info *>(tpi)}; + + // Not found, set error: + std::string tname = rtti_type ? rtti_type->name() : cast_type.name(); + detail::clean_type_id(tname); + std::string msg = "Unregistered type : " + tname; + PyErr_SetString(PyExc_TypeError, msg.c_str()); + return {nullptr, nullptr}; + } + const type_info *typeinfo = nullptr; + const std::type_info *cpptype = nullptr; void *value = nullptr; - object temp; }; -/* Determine suitable casting operator */ +/** + * Determine suitable casting operator for pointer-or-lvalue-casting type casters. The type caster + * needs to provide `operator T*()` and `operator T&()` operators. + * + * If the type supports moving the value away via an `operator T&&() &&` method, it should use + * `movable_cast_op_type` instead. + */ +template <typename T> +using cast_op_type = + conditional_t<std::is_pointer<remove_reference_t<T>>::value, + typename std::add_pointer<intrinsic_t<T>>::type, + typename std::add_lvalue_reference<intrinsic_t<T>>::type>; + +/** + * Determine suitable casting operator for a type caster with a movable value. Such a type caster + * needs to provide `operator T*()`, `operator T&()`, and `operator T&&() &&`. The latter will be + * called in appropriate contexts where the value can be moved rather than copied. + * + * These operator are automatically provided when using the PYBIND11_TYPE_CASTER macro. + */ template <typename T> -using cast_op_type = typename std::conditional<std::is_pointer<typename std::remove_reference<T>::type>::value, - typename std::add_pointer<intrinsic_t<T>>::type, - typename std::add_lvalue_reference<intrinsic_t<T>>::type>::type; +using movable_cast_op_type = + conditional_t<std::is_pointer<typename std::remove_reference<T>::type>::value, + typename std::add_pointer<intrinsic_t<T>>::type, + conditional_t<std::is_rvalue_reference<T>::value, + typename std::add_rvalue_reference<intrinsic_t<T>>::type, + typename std::add_lvalue_reference<intrinsic_t<T>>::type>>; // std::is_copy_constructible isn't quite enough: it lets std::vector<T> (and similar) through when // T is non-copyable, but code containing such a copy constructor fails to actually compile. @@ -378,10 +762,17 @@ template <typename T, typename SFINAE = void> struct is_copy_constructible : std // Specialization for types that appear to be copy constructible but also look like stl containers // (we specifically check for: has `value_type` and `reference` with `reference = value_type&`): if // so, copy constructability depends on whether the value_type is copy constructible. -template <typename Container> struct is_copy_constructible<Container, enable_if_t< - std::is_copy_constructible<Container>::value && - std::is_same<typename Container::value_type &, typename Container::reference>::value - >> : std::is_copy_constructible<typename Container::value_type> {}; +template <typename Container> struct is_copy_constructible<Container, enable_if_t<all_of< + std::is_copy_constructible<Container>, + std::is_same<typename Container::value_type &, typename Container::reference> + >::value>> : is_copy_constructible<typename Container::value_type> {}; + +#if !defined(PYBIND11_CPP17) +// Likewise for std::pair before C++17 (which mandates that the copy constructor not exist when the +// two types aren't themselves copy constructible). +template <typename T1, typename T2> struct is_copy_constructible<std::pair<T1, T2>> + : all_of<is_copy_constructible<T1>, is_copy_constructible<T2>> {}; +#endif /// Generic type caster for objects stored on the heap template <typename type> class type_caster_base : public type_caster_generic { @@ -402,43 +793,71 @@ public: return cast(&src, return_value_policy::move, parent); } + // Returns a (pointer, type_info) pair taking care of necessary RTTI type lookup for a + // polymorphic type. If the instance isn't derived, returns the non-RTTI base version. + template <typename T = itype, enable_if_t<std::is_polymorphic<T>::value, int> = 0> + static std::pair<const void *, const type_info *> src_and_type(const itype *src) { + const void *vsrc = src; + auto &cast_type = typeid(itype); + const std::type_info *instance_type = nullptr; + if (vsrc) { + instance_type = &typeid(*src); + if (!same_type(cast_type, *instance_type)) { + // This is a base pointer to a derived type; if it is a pybind11-registered type, we + // can get the correct derived pointer (which may be != base pointer) by a + // dynamic_cast to most derived type: + if (auto *tpi = get_type_info(*instance_type)) + return {dynamic_cast<const void *>(src), const_cast<const type_info *>(tpi)}; + } + } + // Otherwise we have either a nullptr, an `itype` pointer, or an unknown derived pointer, so + // don't do a cast + return type_caster_generic::src_and_type(vsrc, cast_type, instance_type); + } + + // Non-polymorphic type, so no dynamic casting; just call the generic version directly + template <typename T = itype, enable_if_t<!std::is_polymorphic<T>::value, int> = 0> + static std::pair<const void *, const type_info *> src_and_type(const itype *src) { + return type_caster_generic::src_and_type(src, typeid(itype)); + } + static handle cast(const itype *src, return_value_policy policy, handle parent) { + auto st = src_and_type(src); return type_caster_generic::cast( - src, policy, parent, src ? &typeid(*src) : nullptr, &typeid(type), + st.first, policy, parent, st.second, make_copy_constructor(src), make_move_constructor(src)); } static handle cast_holder(const itype *src, const void *holder) { + auto st = src_and_type(src); return type_caster_generic::cast( - src, return_value_policy::take_ownership, {}, - src ? &typeid(*src) : nullptr, &typeid(type), + st.first, return_value_policy::take_ownership, {}, st.second, nullptr, nullptr, holder); } - template <typename T> using cast_op_type = pybind11::detail::cast_op_type<T>; + template <typename T> using cast_op_type = cast_op_type<T>; operator itype*() { return (type *) value; } operator itype&() { if (!value) throw reference_cast_error(); return *((itype *) value); } protected: - typedef void *(*Constructor)(const void *stream); -#if !defined(_MSC_VER) + using Constructor = void *(*)(const void *); + /* Only enabled when the types are {copy,move}-constructible *and* when the type - does not have a private operator new implementaton. */ - template <typename T = type, typename = enable_if_t<is_copy_constructible<T>::value>> static auto make_copy_constructor(const T *value) -> decltype(new T(*value), Constructor(nullptr)) { - return [](const void *arg) -> void * { return new T(*((const T *) arg)); }; } - template <typename T = type> static auto make_move_constructor(const T *value) -> decltype(new T(std::move(*((T *) value))), Constructor(nullptr)) { - return [](const void *arg) -> void * { return (void *) new T(std::move(*const_cast<T *>(reinterpret_cast<const T *>(arg)))); }; } -#else - /* Visual Studio 2015's SFINAE implementation doesn't yet handle the above robustly in all situations. - Use a workaround that only tests for constructibility for now. */ - template <typename T = type, typename = enable_if_t<is_copy_constructible<T>::value>> - static Constructor make_copy_constructor(const T *value) { - return [](const void *arg) -> void * { return new T(*((const T *)arg)); }; } - template <typename T = type, typename = enable_if_t<std::is_move_constructible<T>::value>> - static Constructor make_move_constructor(const T *value) { - return [](const void *arg) -> void * { return (void *) new T(std::move(*((T *)arg))); }; } -#endif + does not have a private operator new implementation. */ + template <typename T, typename = enable_if_t<is_copy_constructible<T>::value>> + static auto make_copy_constructor(const T *x) -> decltype(new T(*x), Constructor{}) { + return [](const void *arg) -> void * { + return new T(*reinterpret_cast<const T *>(arg)); + }; + } + + template <typename T, typename = enable_if_t<std::is_move_constructible<T>::value>> + static auto make_move_constructor(const T *x) -> decltype(new T(std::move(*const_cast<T *>(x))), Constructor{}) { + return [](const void *arg) -> void * { + return new T(std::move(*const_cast<T *>(reinterpret_cast<const T *>(arg)))); + }; + } static Constructor make_copy_constructor(...) { return nullptr; } static Constructor make_move_constructor(...) { return nullptr; } @@ -451,17 +870,30 @@ template <typename type> using make_caster = type_caster<intrinsic_t<type>>; template <typename T> typename make_caster<T>::template cast_op_type<T> cast_op(make_caster<T> &caster) { return caster.operator typename make_caster<T>::template cast_op_type<T>(); } -template <typename T> typename make_caster<T>::template cast_op_type<T> cast_op(make_caster<T> &&caster) { - return cast_op<T>(caster); +template <typename T> typename make_caster<T>::template cast_op_type<typename std::add_rvalue_reference<T>::type> +cast_op(make_caster<T> &&caster) { + return std::move(caster).operator + typename make_caster<T>::template cast_op_type<typename std::add_rvalue_reference<T>::type>(); } -template <typename type> class type_caster<std::reference_wrapper<type>> : public type_caster_base<type> { +template <typename type> class type_caster<std::reference_wrapper<type>> { +private: + using caster_t = make_caster<type>; + caster_t subcaster; + using subcaster_cast_op_type = typename caster_t::template cast_op_type<type>; + static_assert(std::is_same<typename std::remove_const<type>::type &, subcaster_cast_op_type>::value, + "std::reference_wrapper<T> caster requires T to have a caster with an `T &` operator"); public: + bool load(handle src, bool convert) { return subcaster.load(src, convert); } + static PYBIND11_DESCR name() { return caster_t::name(); } static handle cast(const std::reference_wrapper<type> &src, return_value_policy policy, handle parent) { - return type_caster_base<type>::cast(&src.get(), policy, parent); + // It is definitely wrong to take ownership of this pointer, so mask that rvp + if (policy == return_value_policy::take_ownership || policy == return_value_policy::automatic) + policy = return_value_policy::automatic_reference; + return caster_t::cast(&src.get(), policy, parent); } template <typename T> using cast_op_type = std::reference_wrapper<type>; - operator std::reference_wrapper<type>() { return std::ref(*((type *) this->value)); } + operator std::reference_wrapper<type>() { return subcaster.operator subcaster_cast_op_type&(); } }; #define PYBIND11_TYPE_CASTER(type, py_name) \ @@ -469,13 +901,19 @@ public: type value; \ public: \ static PYBIND11_DESCR name() { return type_descr(py_name); } \ - static handle cast(const type *src, return_value_policy policy, handle parent) { \ + template <typename T_, enable_if_t<std::is_same<type, remove_cv_t<T_>>::value, int> = 0> \ + static handle cast(T_ *src, return_value_policy policy, handle parent) { \ if (!src) return none().release(); \ - return cast(*src, policy, parent); \ + if (policy == return_value_policy::take_ownership) { \ + auto h = cast(std::move(*src), policy, parent); delete src; return h; \ + } else { \ + return cast(*src, policy, parent); \ + } \ } \ operator type*() { return &value; } \ operator type&() { return value; } \ - template <typename _T> using cast_op_type = pybind11::detail::cast_op_type<_T> + operator type&&() && { return std::move(value); } \ + template <typename T_> using cast_op_type = pybind11::detail::movable_cast_op_type<T_> template <typename CharT> using is_std_char_type = any_of< @@ -503,36 +941,32 @@ public: py_value = (py_type) PyFloat_AsDouble(src.ptr()); else return false; - } else if (sizeof(T) <= sizeof(long)) { - if (PyFloat_Check(src.ptr())) - return false; - if (std::is_signed<T>::value) - py_value = (py_type) PyLong_AsLong(src.ptr()); - else - py_value = (py_type) PyLong_AsUnsignedLong(src.ptr()); - } else { - if (PyFloat_Check(src.ptr())) - return false; - if (std::is_signed<T>::value) - py_value = (py_type) PYBIND11_LONG_AS_LONGLONG(src.ptr()); - else - py_value = (py_type) PYBIND11_LONG_AS_UNSIGNED_LONGLONG(src.ptr()); + } else if (PyFloat_Check(src.ptr())) { + return false; + } else if (std::is_unsigned<py_type>::value) { + py_value = as_unsigned<py_type>(src.ptr()); + } else { // signed integer: + py_value = sizeof(T) <= sizeof(long) + ? (py_type) PyLong_AsLong(src.ptr()) + : (py_type) PYBIND11_LONG_AS_LONGLONG(src.ptr()); } - if ((py_value == (py_type) -1 && PyErr_Occurred()) || - (std::is_integral<T>::value && sizeof(py_type) != sizeof(T) && - (py_value < (py_type) std::numeric_limits<T>::min() || - py_value > (py_type) std::numeric_limits<T>::max()))) { -#if PY_VERSION_HEX < 0x03000000 - bool type_error = PyErr_ExceptionMatches(PyExc_SystemError); + bool py_err = py_value == (py_type) -1 && PyErr_Occurred(); + if (py_err || (std::is_integral<T>::value && sizeof(py_type) != sizeof(T) && + (py_value < (py_type) std::numeric_limits<T>::min() || + py_value > (py_type) std::numeric_limits<T>::max()))) { + bool type_error = py_err && PyErr_ExceptionMatches( +#if PY_VERSION_HEX < 0x03000000 && !defined(PYPY_VERSION) + PyExc_SystemError #else - bool type_error = PyErr_ExceptionMatches(PyExc_TypeError); + PyExc_TypeError #endif + ); PyErr_Clear(); if (type_error && convert && PyNumber_Check(src.ptr())) { - auto tmp = reinterpret_borrow<object>(std::is_floating_point<T>::value - ? PyNumber_Float(src.ptr()) - : PyNumber_Long(src.ptr())); + auto tmp = reinterpret_steal<object>(std::is_floating_point<T>::value + ? PyNumber_Float(src.ptr()) + : PyNumber_Long(src.ptr())); PyErr_Clear(); return load(tmp, false); } @@ -564,7 +998,11 @@ public: template<typename T> struct void_caster { public: - bool load(handle, bool) { return false; } + bool load(handle src, bool) { + if (src && src.is_none()) + return true; + return false; + } static handle cast(T, return_value_policy /* policy */, handle /* parent */) { return none().inc_ref(); } @@ -592,8 +1030,9 @@ public: } /* Check if this is a C++ type */ - if (get_type_info((PyTypeObject *) h.get_type().ptr())) { - value = ((instance<void> *) h.ptr())->value; + auto &bases = all_type_info((PyTypeObject *) h.get_type().ptr()); + if (bases.size() == 1) { // Only allowing loading from a single-value type + value = values_and_holders(reinterpret_cast<instance *>(h.ptr())).begin()->value_ptr(); return true; } @@ -615,15 +1054,41 @@ private: void *value = nullptr; }; -template <> class type_caster<std::nullptr_t> : public type_caster<void_type> { }; +template <> class type_caster<std::nullptr_t> : public void_caster<std::nullptr_t> { }; template <> class type_caster<bool> { public: - bool load(handle src, bool) { + bool load(handle src, bool convert) { if (!src) return false; else if (src.ptr() == Py_True) { value = true; return true; } else if (src.ptr() == Py_False) { value = false; return true; } - else return false; + else if (convert || !strcmp("numpy.bool_", Py_TYPE(src.ptr())->tp_name)) { + // (allow non-implicit conversion for numpy booleans) + + Py_ssize_t res = -1; + if (src.is_none()) { + res = 0; // None is implicitly converted to False + } + #if defined(PYPY_VERSION) + // On PyPy, check that "__bool__" (or "__nonzero__" on Python 2.7) attr exists + else if (hasattr(src, PYBIND11_BOOL_ATTR)) { + res = PyObject_IsTrue(src.ptr()); + } + #else + // Alternate approach for CPython: this does the same as the above, but optimized + // using the CPython API so as to avoid an unneeded attribute lookup. + else if (auto tp_as_number = src.ptr()->ob_type->tp_as_number) { + if (PYBIND11_NB_BOOL(tp_as_number)) { + res = (*PYBIND11_NB_BOOL(tp_as_number))(src.ptr()); + } + } + #endif + if (res == 0 || res == 1) { + value = (bool) res; + return true; + } + } + return false; } static handle cast(bool src, return_value_policy /* policy */, handle /* parent */) { return handle(src ? Py_True : Py_False).inc_ref(); @@ -632,10 +1097,11 @@ public: }; // Helper class for UTF-{8,16,32} C++ stl strings: -template <typename CharT, class Traits, class Allocator> -struct type_caster<std::basic_string<CharT, Traits, Allocator>, enable_if_t<is_std_char_type<CharT>::value>> { +template <typename StringType, bool IsView = false> struct string_caster { + using CharT = typename StringType::value_type; + // Simplify life by being able to assume standard char sizes (the standard only guarantees - // minimums), but Python requires exact sizes + // minimums, but Python requires exact sizes) static_assert(!std::is_same<CharT, char>::value || sizeof(CharT) == 1, "Unsupported char size != 1"); static_assert(!std::is_same<CharT, char16_t>::value || sizeof(CharT) == 2, "Unsupported char16_t size != 2"); static_assert(!std::is_same<CharT, char32_t>::value || sizeof(CharT) == 4, "Unsupported char32_t size != 4"); @@ -644,8 +1110,6 @@ struct type_caster<std::basic_string<CharT, Traits, Allocator>, enable_if_t<is_s "Unsupported wchar_t size != 2/4"); static constexpr size_t UTF_N = 8 * sizeof(CharT); - using StringType = std::basic_string<CharT, Traits, Allocator>; - bool load(handle src, bool) { #if PY_MAJOR_VERSION < 3 object temp; @@ -655,11 +1119,16 @@ struct type_caster<std::basic_string<CharT, Traits, Allocator>, enable_if_t<is_s return false; } else if (!PyUnicode_Check(load_src.ptr())) { #if PY_MAJOR_VERSION >= 3 - return false; - // The below is a guaranteed failure in Python 3 when PyUnicode_Check returns false + return load_bytes(load_src); #else + if (sizeof(CharT) == 1) { + return load_bytes(load_src); + } + + // The below is a guaranteed failure in Python 3 when PyUnicode_Check returns false if (!PYBIND11_BYTES_CHECK(load_src.ptr())) return false; + temp = reinterpret_steal<object>(PyUnicode_FromObject(load_src.ptr())); if (!temp) { PyErr_Clear(); return false; } load_src = temp; @@ -674,11 +1143,16 @@ struct type_caster<std::basic_string<CharT, Traits, Allocator>, enable_if_t<is_s size_t length = (size_t) PYBIND11_BYTES_SIZE(utfNbytes.ptr()) / sizeof(CharT); if (UTF_N > 8) { buffer++; length--; } // Skip BOM for UTF-16/32 value = StringType(buffer, length); + + // If we're loading a string_view we need to keep the encoded Python object alive: + if (IsView) + loader_life_support::add_patient(utfNbytes); + return true; } static handle cast(const StringType &src, return_value_policy /* policy */, handle /* parent */) { - const char *buffer = reinterpret_cast<const char *>(src.c_str()); + const char *buffer = reinterpret_cast<const char *>(src.data()); ssize_t nbytes = ssize_t(src.size() * sizeof(CharT)); handle s = decode_utfN(buffer, nbytes); if (!s) throw error_already_set(); @@ -702,8 +1176,39 @@ private: return PyUnicode_Decode(buffer, nbytes, UTF_N == 8 ? "utf-8" : UTF_N == 16 ? "utf-16" : "utf-32", nullptr); #endif } + + // When loading into a std::string or char*, accept a bytes object as-is (i.e. + // without any encoding/decoding attempt). For other C++ char sizes this is a no-op. + // which supports loading a unicode from a str, doesn't take this path. + template <typename C = CharT> + bool load_bytes(enable_if_t<sizeof(C) == 1, handle> src) { + if (PYBIND11_BYTES_CHECK(src.ptr())) { + // We were passed a Python 3 raw bytes; accept it into a std::string or char* + // without any encoding attempt. + const char *bytes = PYBIND11_BYTES_AS_STRING(src.ptr()); + if (bytes) { + value = StringType(bytes, (size_t) PYBIND11_BYTES_SIZE(src.ptr())); + return true; + } + } + + return false; + } + + template <typename C = CharT> + bool load_bytes(enable_if_t<sizeof(C) != 1, handle>) { return false; } }; +template <typename CharT, class Traits, class Allocator> +struct type_caster<std::basic_string<CharT, Traits, Allocator>, enable_if_t<is_std_char_type<CharT>::value>> + : string_caster<std::basic_string<CharT, Traits, Allocator>> {}; + +#ifdef PYBIND11_HAS_STRING_VIEW +template <typename CharT, class Traits> +struct type_caster<std::basic_string_view<CharT, Traits>, enable_if_t<is_std_char_type<CharT>::value>> + : string_caster<std::basic_string_view<CharT, Traits>, true> {}; +#endif + // Type caster for C-style strings. We basically use a std::string type caster, but also add the // ability to use None as a nullptr char* (which the string caster doesn't allow). template <typename CharT> struct type_caster<CharT, enable_if_t<is_std_char_type<CharT>::value>> { @@ -785,54 +1290,16 @@ public: } static PYBIND11_DESCR name() { return type_descr(_(PYBIND11_STRING_NAME)); } - template <typename _T> using cast_op_type = typename std::remove_reference<pybind11::detail::cast_op_type<_T>>::type; + template <typename _T> using cast_op_type = remove_reference_t<pybind11::detail::cast_op_type<_T>>; }; -template <typename T1, typename T2> class type_caster<std::pair<T1, T2>> { - typedef std::pair<T1, T2> type; +// Base implementation for std::tuple and std::pair +template <template<typename...> class Tuple, typename... Ts> class tuple_caster { + using type = Tuple<Ts...>; + static constexpr auto size = sizeof...(Ts); + using indices = make_index_sequence<size>; public: - bool load(handle src, bool convert) { - if (!isinstance<sequence>(src)) - return false; - const auto seq = reinterpret_borrow<sequence>(src); - if (seq.size() != 2) - return false; - return first.load(seq[0], convert) && second.load(seq[1], convert); - } - static handle cast(const type &src, return_value_policy policy, handle parent) { - auto o1 = reinterpret_steal<object>(make_caster<T1>::cast(src.first, policy, parent)); - auto o2 = reinterpret_steal<object>(make_caster<T2>::cast(src.second, policy, parent)); - if (!o1 || !o2) - return handle(); - tuple result(2); - PyTuple_SET_ITEM(result.ptr(), 0, o1.release().ptr()); - PyTuple_SET_ITEM(result.ptr(), 1, o2.release().ptr()); - return result.release(); - } - - static PYBIND11_DESCR name() { - return type_descr( - _("Tuple[") + make_caster<T1>::name() + _(", ") + make_caster<T2>::name() + _("]") - ); - } - - template <typename T> using cast_op_type = type; - - operator type() { - return type(cast_op<T1>(first), cast_op<T2>(second)); - } -protected: - make_caster<T1> first; - make_caster<T2> second; -}; - -template <typename... Tuple> class type_caster<std::tuple<Tuple...>> { - using type = std::tuple<Tuple...>; - using indices = make_index_sequence<sizeof...(Tuple)>; - static constexpr auto size = sizeof...(Tuple); - -public: bool load(handle src, bool convert) { if (!isinstance<sequence>(src)) return false; @@ -842,40 +1309,41 @@ public: return load_impl(seq, convert, indices{}); } - static handle cast(const type &src, return_value_policy policy, handle parent) { - return cast_impl(src, policy, parent, indices{}); + template <typename T> + static handle cast(T &&src, return_value_policy policy, handle parent) { + return cast_impl(std::forward<T>(src), policy, parent, indices{}); } static PYBIND11_DESCR name() { - return type_descr(_("Tuple[") + detail::concat(make_caster<Tuple>::name()...) + _("]")); + return type_descr(_("Tuple[") + detail::concat(make_caster<Ts>::name()...) + _("]")); } template <typename T> using cast_op_type = type; - operator type() { return implicit_cast(indices{}); } + operator type() & { return implicit_cast(indices{}); } + operator type() && { return std::move(*this).implicit_cast(indices{}); } protected: template <size_t... Is> - type implicit_cast(index_sequence<Is...>) { return type(cast_op<Tuple>(std::get<Is>(value))...); } + type implicit_cast(index_sequence<Is...>) & { return type(cast_op<Ts>(std::get<Is>(subcasters))...); } + template <size_t... Is> + type implicit_cast(index_sequence<Is...>) && { return type(cast_op<Ts>(std::move(std::get<Is>(subcasters)))...); } static constexpr bool load_impl(const sequence &, bool, index_sequence<>) { return true; } template <size_t... Is> bool load_impl(const sequence &seq, bool convert, index_sequence<Is...>) { - for (bool r : {std::get<Is>(value).load(seq[Is], convert)...}) + for (bool r : {std::get<Is>(subcasters).load(seq[Is], convert)...}) if (!r) return false; return true; } - static handle cast_impl(const type &, return_value_policy, handle, - index_sequence<>) { return tuple().release(); } - /* Implementation: Convert a C++ tuple into a Python tuple */ - template <size_t... Is> - static handle cast_impl(const type &src, return_value_policy policy, handle parent, index_sequence<Is...>) { - std::array<object, size> entries {{ - reinterpret_steal<object>(make_caster<Tuple>::cast(std::get<Is>(src), policy, parent))... + template <typename T, size_t... Is> + static handle cast_impl(T &&src, return_value_policy policy, handle parent, index_sequence<Is...>) { + std::array<object, size> entries{{ + reinterpret_steal<object>(make_caster<Ts>::cast(std::get<Is>(std::forward<T>(src)), policy, parent))... }}; for (const auto &entry: entries) if (!entry) @@ -887,9 +1355,15 @@ protected: return result.release(); } - std::tuple<make_caster<Tuple>...> value; + Tuple<make_caster<Ts>...> subcasters; }; +template <typename T1, typename T2> class type_caster<std::pair<T1, T2>> + : public tuple_caster<std::pair, T1, T2> {}; + +template <typename... Ts> class type_caster<std::tuple<Ts...>> + : public tuple_caster<std::tuple, Ts...> {}; + /// Helper class which abstracts away certain actions. Users can provide specializations for /// custom holders, but it's only necessary if the type has a non-standard interface. template <typename T> @@ -902,68 +1376,45 @@ template <typename type, typename holder_type> struct copyable_holder_caster : public type_caster_base<type> { public: using base = type_caster_base<type>; + static_assert(std::is_base_of<base, type_caster<type>>::value, + "Holder classes are only supported for custom types"); using base::base; using base::cast; using base::typeinfo; using base::value; - using base::temp; - PYBIND11_NOINLINE bool load(handle src, bool convert) { - return load(src, convert, Py_TYPE(src.ptr())); + bool load(handle src, bool convert) { + return base::template load_impl<copyable_holder_caster<type, holder_type>>(src, convert); } - bool load(handle src, bool convert, PyTypeObject *tobj) { - if (!src || !typeinfo) - return false; - if (src.is_none()) { - value = nullptr; - return true; - } - - if (typeinfo->default_holder) - throw cast_error("Unable to load a custom holder type from a default-holder instance"); - - if (typeinfo->simple_type) { /* Case 1: no multiple inheritance etc. involved */ - /* Check if we can safely perform a reinterpret-style cast */ - if (PyType_IsSubtype(tobj, typeinfo->type)) - return load_value_and_holder(src); - } else { /* Case 2: multiple inheritance */ - /* Check if we can safely perform a reinterpret-style cast */ - if (tobj == typeinfo->type) - return load_value_and_holder(src); - - /* If this is a python class, also check the parents recursively */ - auto const &type_dict = get_internals().registered_types_py; - bool new_style_class = PyType_Check((PyObject *) tobj); - if (type_dict.find(tobj) == type_dict.end() && new_style_class && tobj->tp_bases) { - auto parents = reinterpret_borrow<tuple>(tobj->tp_bases); - for (handle parent : parents) { - bool result = load(src, convert, (PyTypeObject *) parent.ptr()); - if (result) - return true; - } - } + explicit operator type*() { return this->value; } + explicit operator type&() { return *(this->value); } + explicit operator holder_type*() { return &holder; } - if (try_implicit_casts(src, convert)) - return true; - } + // Workaround for Intel compiler bug + // see pybind11 issue 94 + #if defined(__ICC) || defined(__INTEL_COMPILER) + operator holder_type&() { return holder; } + #else + explicit operator holder_type&() { return holder; } + #endif - if (convert) { - for (auto &converter : typeinfo->implicit_conversions) { - temp = reinterpret_steal<object>(converter(src.ptr(), typeinfo->type)); - if (load(temp, false)) - return true; - } - } + static handle cast(const holder_type &src, return_value_policy, handle) { + const auto *ptr = holder_helper<holder_type>::get(src); + return type_caster_base<type>::cast_holder(ptr, &src); + } - return false; +protected: + friend class type_caster_generic; + void check_holder_compat() { + if (typeinfo->default_holder) + throw cast_error("Unable to load a custom holder type from a default-holder instance"); } - bool load_value_and_holder(handle src) { - auto inst = (instance<type, holder_type> *) src.ptr(); - value = (void *) inst->value; - if (inst->holder_constructed) { - holder = inst->holder; + bool load_value(value_and_holder &&v_h) { + if (v_h.holder_constructed()) { + value = v_h.value_ptr(); + holder = v_h.holder<holder_type>(); return true; } else { throw cast_error("Unable to cast from non-held to held instance (T& to Holder<T>) " @@ -991,24 +1442,9 @@ public: return false; } - explicit operator type*() { return this->value; } - explicit operator type&() { return *(this->value); } - explicit operator holder_type*() { return &holder; } - - // Workaround for Intel compiler bug - // see pybind11 issue 94 - #if defined(__ICC) || defined(__INTEL_COMPILER) - operator holder_type&() { return holder; } - #else - explicit operator holder_type&() { return holder; } - #endif + static bool try_direct_conversions(handle) { return false; } - static handle cast(const holder_type &src, return_value_policy, handle) { - const auto *ptr = holder_helper<holder_type>::get(src); - return type_caster_base<type>::cast_holder(ptr, &src); - } -protected: holder_type holder; }; @@ -1018,6 +1454,9 @@ class type_caster<std::shared_ptr<T>> : public copyable_holder_caster<T, std::sh template <typename type, typename holder_type> struct move_only_holder_caster { + static_assert(std::is_base_of<type_caster_base<type>, type_caster<type>>::value, + "Holder classes are only supported for custom types"); + static handle cast(holder_type &&src, return_value_policy, handle) { auto *ptr = holder_helper<holder_type>::get(src); return type_caster_base<type>::cast_holder(ptr, &src); @@ -1030,7 +1469,7 @@ class type_caster<std::unique_ptr<type, deleter>> : public move_only_holder_caster<type, std::unique_ptr<type, deleter>> { }; template <typename type, typename holder_type> -using type_caster_holder = conditional_t<std::is_copy_constructible<holder_type>::value, +using type_caster_holder = conditional_t<is_copy_constructible<holder_type>::value, copyable_holder_caster<type, holder_type>, move_only_holder_caster<type, holder_type>>; @@ -1095,7 +1534,7 @@ template <typename T> using move_is_plain_type = satisfies_none_of<T, template <typename T, typename SFINAE = void> struct move_always : std::false_type {}; template <typename T> struct move_always<T, enable_if_t<all_of< move_is_plain_type<T>, - negation<std::is_copy_constructible<T>>, + negation<is_copy_constructible<T>>, std::is_move_constructible<T>, std::is_same<decltype(std::declval<make_caster<T>>().operator T&()), T&> >::value>> : std::true_type {}; @@ -1246,18 +1685,19 @@ NAMESPACE_END(detail) template <return_value_policy policy = return_value_policy::automatic_reference, typename... Args> tuple make_tuple(Args&&... args_) { - const size_t size = sizeof...(Args); + constexpr size_t size = sizeof...(Args); std::array<object, size> args { { reinterpret_steal<object>(detail::make_caster<Args>::cast( std::forward<Args>(args_), policy, nullptr))... } }; - for (auto &arg_value : args) { - if (!arg_value) { + for (size_t i = 0; i < args.size(); i++) { + if (!args[i]) { #if defined(NDEBUG) throw cast_error("make_tuple(): unable to convert arguments to Python object (compile in debug mode for details)"); #else - throw cast_error("make_tuple(): unable to convert arguments of types '" + - (std::string) type_id<std::tuple<Args...>>() + "' to Python object"); + std::array<std::string, size> argtypes { {type_id<Args>()...} }; + throw cast_error("make_tuple(): unable to convert argument of type '" + + argtypes[i] + "' to Python object"); #endif } } @@ -1272,14 +1712,17 @@ template <return_value_policy policy = return_value_policy::automatic_reference, /// Annotation for arguments struct arg { /// Constructs an argument with the name of the argument; if null or omitted, this is a positional argument. - constexpr explicit arg(const char *name = nullptr) : name(name), flag_noconvert(false) { } + constexpr explicit arg(const char *name = nullptr) : name(name), flag_noconvert(false), flag_none(true) { } /// Assign a value to this argument template <typename T> arg_v operator=(T &&value) const; /// Indicate that the type should not be converted in the type caster arg &noconvert(bool flag = true) { flag_noconvert = flag; return *this; } + /// Indicates that the argument should/shouldn't allow None (e.g. for nullable pointer args) + arg &none(bool flag = true) { flag_none = flag; return *this; } const char *name; ///< If non-null, this is a named kwargs argument bool flag_noconvert : 1; ///< If set, do not allow conversion (requires a supporting type caster!) + bool flag_none : 1; ///< If set (the default), allow None to be passed to this argument }; /// \ingroup annotations @@ -1312,6 +1755,9 @@ public: /// Same as `arg::noconvert()`, but returns *this as arg_v&, not arg& arg_v &noconvert(bool flag = true) { arg::noconvert(flag); return *this; } + /// Same as `arg::nonone()`, but returns *this as arg_v&, not arg& + arg_v &none(bool flag = true) { arg::none(flag); return *this; } + /// The default value object value; /// The (optional) description of the default value @@ -1337,7 +1783,7 @@ constexpr arg operator"" _a(const char *name, size_t) { return arg(name); } NAMESPACE_BEGIN(detail) -// forward declaration +// forward declaration (definition in attr.h) struct function_record; /// Internal data associated with a single function call @@ -1355,6 +1801,9 @@ struct function_call { /// The parent, if any handle parent; + + /// If this is a call to an initializer, this argument contains `self` + handle init_self; }; @@ -1383,14 +1832,14 @@ public: return load_impl_sequence(call, indices{}); } - template <typename Return, typename Func> - enable_if_t<!std::is_void<Return>::value, Return> call(Func &&f) { - return call_impl<Return>(std::forward<Func>(f), indices{}); + template <typename Return, typename Guard, typename Func> + enable_if_t<!std::is_void<Return>::value, Return> call(Func &&f) && { + return std::move(*this).template call_impl<Return>(std::forward<Func>(f), indices{}, Guard{}); } - template <typename Return, typename Func> - enable_if_t<std::is_void<Return>::value, void_type> call(Func &&f) { - call_impl<Return>(std::forward<Func>(f), indices{}); + template <typename Return, typename Guard, typename Func> + enable_if_t<std::is_void<Return>::value, void_type> call(Func &&f) && { + std::move(*this).template call_impl<Return>(std::forward<Func>(f), indices{}, Guard{}); return void_type(); } @@ -1400,18 +1849,18 @@ private: template <size_t... Is> bool load_impl_sequence(function_call &call, index_sequence<Is...>) { - for (bool r : {std::get<Is>(value).load(call.args[Is], call.args_convert[Is])...}) + for (bool r : {std::get<Is>(argcasters).load(call.args[Is], call.args_convert[Is])...}) if (!r) return false; return true; } - template <typename Return, typename Func, size_t... Is> - Return call_impl(Func &&f, index_sequence<Is...>) { - return std::forward<Func>(f)(cast_op<Args>(std::get<Is>(value))...); + template <typename Return, typename Func, size_t... Is, typename Guard> + Return call_impl(Func &&f, index_sequence<Is...>, Guard &&) { + return std::forward<Func>(f)(cast_op<Args>(std::move(std::get<Is>(argcasters)))...); } - std::tuple<make_caster<Args>...> value; + std::tuple<make_caster<Args>...> argcasters; }; /// Helper class which collects only positional arguments for a Python function call. @@ -1601,4 +2050,4 @@ NAMESPACE_END(detail) template<> class type_caster<Type> : public type_caster_base<Type> { }; \ }} -NAMESPACE_END(pybind11) +NAMESPACE_END(PYBIND11_NAMESPACE) diff --git a/ext/pybind11/include/pybind11/chrono.h b/ext/pybind11/include/pybind11/chrono.h index 8a41d08b0..95ada76e0 100644 --- a/ext/pybind11/include/pybind11/chrono.h +++ b/ext/pybind11/include/pybind11/chrono.h @@ -27,7 +27,7 @@ #define PyDateTime_DELTA_GET_MICROSECONDS(o) (((PyDateTime_Delta*)o)->microseconds) #endif -NAMESPACE_BEGIN(pybind11) +NAMESPACE_BEGIN(PYBIND11_NAMESPACE) NAMESPACE_BEGIN(detail) template <typename type> class duration_caster { @@ -159,4 +159,4 @@ template <typename Rep, typename Period> class type_caster<std::chrono::duration }; NAMESPACE_END(detail) -NAMESPACE_END(pybind11) +NAMESPACE_END(PYBIND11_NAMESPACE) diff --git a/ext/pybind11/include/pybind11/common.h b/ext/pybind11/include/pybind11/common.h index ac2be7aef..6c8a4f1e8 100644 --- a/ext/pybind11/include/pybind11/common.h +++ b/ext/pybind11/include/pybind11/common.h @@ -1,719 +1,2 @@ -/* - pybind11/common.h -- Basic macros - - Copyright (c) 2016 Wenzel Jakob <wenzel.jakob@epfl.ch> - - All rights reserved. Use of this source code is governed by a - BSD-style license that can be found in the LICENSE file. -*/ - -#pragma once - -#if !defined(NAMESPACE_BEGIN) -# define NAMESPACE_BEGIN(name) namespace name { -#endif -#if !defined(NAMESPACE_END) -# define NAMESPACE_END(name) } -#endif - -// Neither MSVC nor Intel support enough of C++14 yet (in particular, as of MSVC 2015 and ICC 17 -// beta, neither support extended constexpr, which we rely on in descr.h), so don't enable pybind -// CPP14 features for them. -#if !defined(_MSC_VER) && !defined(__INTEL_COMPILER) -# if __cplusplus >= 201402L -# define PYBIND11_CPP14 -# if __cplusplus > 201402L /* Temporary: should be updated to >= the final C++17 value once known */ -# define PYBIND11_CPP17 -# endif -# endif -#endif - -// Compiler version assertions -#if defined(__INTEL_COMPILER) -# if __INTEL_COMPILER < 1500 -# error pybind11 requires Intel C++ compiler v15 or newer -# endif -#elif defined(__clang__) && !defined(__apple_build_version__) -# if __clang_major__ < 3 || (__clang_major__ == 3 && __clang_minor__ < 3) -# error pybind11 requires clang 3.3 or newer -# endif -#elif defined(__clang__) -// Apple changes clang version macros to its Xcode version; the first Xcode release based on -// (upstream) clang 3.3 was Xcode 5: -# if __clang_major__ < 5 -# error pybind11 requires Xcode/clang 5.0 or newer -# endif -#elif defined(__GNUG__) -# if __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 8) -# error pybind11 requires gcc 4.8 or newer -# endif -#elif defined(_MSC_VER) -// Pybind hits various compiler bugs in 2015u2 and earlier, and also makes use of some stl features -// (e.g. std::negation) added in 2015u3: -# if _MSC_FULL_VER < 190024210 -# error pybind11 requires MSVC 2015 update 3 or newer -# endif -#endif - -#if !defined(PYBIND11_EXPORT) -# if defined(WIN32) || defined(_WIN32) -# define PYBIND11_EXPORT __declspec(dllexport) -# else -# define PYBIND11_EXPORT __attribute__ ((visibility("default"))) -# endif -#endif - -#if defined(_MSC_VER) -# define PYBIND11_NOINLINE __declspec(noinline) -#else -# define PYBIND11_NOINLINE __attribute__ ((noinline)) -#endif - -#if defined(PYBIND11_CPP14) -# define PYBIND11_DEPRECATED(reason) [[deprecated(reason)]] -#elif defined(__clang__) -# define PYBIND11_DEPRECATED(reason) __attribute__((deprecated(reason))) -#elif defined(__GNUG__) -# define PYBIND11_DEPRECATED(reason) __attribute__((deprecated)) -#elif defined(_MSC_VER) -# define PYBIND11_DEPRECATED(reason) __declspec(deprecated) -#endif - -#define PYBIND11_VERSION_MAJOR 2 -#define PYBIND11_VERSION_MINOR 1 -#define PYBIND11_VERSION_PATCH 1 - -/// Include Python header, disable linking to pythonX_d.lib on Windows in debug mode -#if defined(_MSC_VER) -# if (PY_MAJOR_VERSION == 3 && PY_MINOR_VERSION < 4) -# define HAVE_ROUND 1 -# endif -# pragma warning(push) -# pragma warning(disable: 4510 4610 4512 4005) -# if defined(_DEBUG) -# define PYBIND11_DEBUG_MARKER -# undef _DEBUG -# endif -#endif - -#include <Python.h> -#include <frameobject.h> -#include <pythread.h> - -#if defined(_WIN32) && (defined(min) || defined(max)) -# error Macro clash with min and max -- define NOMINMAX when compiling your program on Windows -#endif - -#if defined(isalnum) -# undef isalnum -# undef isalpha -# undef islower -# undef isspace -# undef isupper -# undef tolower -# undef toupper -#endif - -#if defined(_MSC_VER) -# if defined(PYBIND11_DEBUG_MARKER) -# define _DEBUG -# undef PYBIND11_DEBUG_MARKER -# endif -# pragma warning(pop) -#endif - -#include <cstddef> -#include <forward_list> -#include <vector> -#include <string> -#include <stdexcept> -#include <unordered_set> -#include <unordered_map> -#include <memory> -#include <typeindex> -#include <type_traits> - -#if PY_MAJOR_VERSION >= 3 /// Compatibility macros for various Python versions -#define PYBIND11_INSTANCE_METHOD_NEW(ptr, class_) PyInstanceMethod_New(ptr) -#define PYBIND11_BYTES_CHECK PyBytes_Check -#define PYBIND11_BYTES_FROM_STRING PyBytes_FromString -#define PYBIND11_BYTES_FROM_STRING_AND_SIZE PyBytes_FromStringAndSize -#define PYBIND11_BYTES_AS_STRING_AND_SIZE PyBytes_AsStringAndSize -#define PYBIND11_BYTES_AS_STRING PyBytes_AsString -#define PYBIND11_BYTES_SIZE PyBytes_Size -#define PYBIND11_LONG_CHECK(o) PyLong_Check(o) -#define PYBIND11_LONG_AS_LONGLONG(o) PyLong_AsLongLong(o) -#define PYBIND11_LONG_AS_UNSIGNED_LONGLONG(o) PyLong_AsUnsignedLongLong(o) -#define PYBIND11_BYTES_NAME "bytes" -#define PYBIND11_STRING_NAME "str" -#define PYBIND11_SLICE_OBJECT PyObject -#define PYBIND11_FROM_STRING PyUnicode_FromString -#define PYBIND11_STR_TYPE ::pybind11::str -#define PYBIND11_PLUGIN_IMPL(name) \ - extern "C" PYBIND11_EXPORT PyObject *PyInit_##name() -#else -#define PYBIND11_INSTANCE_METHOD_NEW(ptr, class_) PyMethod_New(ptr, nullptr, class_) -#define PYBIND11_BYTES_CHECK PyString_Check -#define PYBIND11_BYTES_FROM_STRING PyString_FromString -#define PYBIND11_BYTES_FROM_STRING_AND_SIZE PyString_FromStringAndSize -#define PYBIND11_BYTES_AS_STRING_AND_SIZE PyString_AsStringAndSize -#define PYBIND11_BYTES_AS_STRING PyString_AsString -#define PYBIND11_BYTES_SIZE PyString_Size -#define PYBIND11_LONG_CHECK(o) (PyInt_Check(o) || PyLong_Check(o)) -#define PYBIND11_LONG_AS_LONGLONG(o) (PyInt_Check(o) ? (long long) PyLong_AsLong(o) : PyLong_AsLongLong(o)) -#define PYBIND11_LONG_AS_UNSIGNED_LONGLONG(o) (PyInt_Check(o) ? (unsigned long long) PyLong_AsUnsignedLong(o) : PyLong_AsUnsignedLongLong(o)) -#define PYBIND11_BYTES_NAME "str" -#define PYBIND11_STRING_NAME "unicode" -#define PYBIND11_SLICE_OBJECT PySliceObject -#define PYBIND11_FROM_STRING PyString_FromString -#define PYBIND11_STR_TYPE ::pybind11::bytes -#define PYBIND11_PLUGIN_IMPL(name) \ - static PyObject *pybind11_init_wrapper(); \ - extern "C" PYBIND11_EXPORT void init##name() { \ - (void)pybind11_init_wrapper(); \ - } \ - PyObject *pybind11_init_wrapper() -#endif - -#if PY_VERSION_HEX >= 0x03050000 && PY_VERSION_HEX < 0x03050200 -extern "C" { - struct _Py_atomic_address { void *value; }; - PyAPI_DATA(_Py_atomic_address) _PyThreadState_Current; -} -#endif - -#define PYBIND11_TRY_NEXT_OVERLOAD ((PyObject *) 1) // special failure return code -#define PYBIND11_STRINGIFY(x) #x -#define PYBIND11_TOSTRING(x) PYBIND11_STRINGIFY(x) -#define PYBIND11_INTERNALS_ID "__pybind11_" \ - PYBIND11_TOSTRING(PYBIND11_VERSION_MAJOR) "_" PYBIND11_TOSTRING(PYBIND11_VERSION_MINOR) "__" - -/** \rst - This macro creates the entry point that will be invoked when the Python interpreter - imports a plugin library. Please create a `module` in the function body and return - the pointer to its underlying Python object at the end. - - .. code-block:: cpp - - PYBIND11_PLUGIN(example) { - pybind11::module m("example", "pybind11 example plugin"); - /// Set up bindings here - return m.ptr(); - } -\endrst */ -#define PYBIND11_PLUGIN(name) \ - static PyObject *pybind11_init(); \ - PYBIND11_PLUGIN_IMPL(name) { \ - int major, minor; \ - if (sscanf(Py_GetVersion(), "%i.%i", &major, &minor) != 2) { \ - PyErr_SetString(PyExc_ImportError, "Can't parse Python version."); \ - return nullptr; \ - } else if (major != PY_MAJOR_VERSION || minor != PY_MINOR_VERSION) { \ - PyErr_Format(PyExc_ImportError, \ - "Python version mismatch: module was compiled for " \ - "version %i.%i, while the interpreter is running " \ - "version %i.%i.", PY_MAJOR_VERSION, PY_MINOR_VERSION, \ - major, minor); \ - return nullptr; \ - } \ - try { \ - return pybind11_init(); \ - } catch (pybind11::error_already_set &e) { \ - e.clear(); \ - PyErr_SetString(PyExc_ImportError, e.what()); \ - return nullptr; \ - } catch (const std::exception &e) { \ - PyErr_SetString(PyExc_ImportError, e.what()); \ - return nullptr; \ - } \ - } \ - PyObject *pybind11_init() - -NAMESPACE_BEGIN(pybind11) - -using ssize_t = Py_ssize_t; -using size_t = std::size_t; - -/// Approach used to cast a previously unknown C++ instance into a Python object -enum class return_value_policy : uint8_t { - /** This is the default return value policy, which falls back to the policy - return_value_policy::take_ownership when the return value is a pointer. - Otherwise, it uses return_value::move or return_value::copy for rvalue - and lvalue references, respectively. See below for a description of what - all of these different policies do. */ - automatic = 0, - - /** As above, but use policy return_value_policy::reference when the return - value is a pointer. This is the default conversion policy for function - arguments when calling Python functions manually from C++ code (i.e. via - handle::operator()). You probably won't need to use this. */ - automatic_reference, - - /** Reference an existing object (i.e. do not create a new copy) and take - ownership. Python will call the destructor and delete operator when the - object’s reference count reaches zero. Undefined behavior ensues when - the C++ side does the same.. */ - take_ownership, - - /** Create a new copy of the returned object, which will be owned by - Python. This policy is comparably safe because the lifetimes of the two - instances are decoupled. */ - copy, - - /** Use std::move to move the return value contents into a new instance - that will be owned by Python. This policy is comparably safe because the - lifetimes of the two instances (move source and destination) are - decoupled. */ - move, - - /** Reference an existing object, but do not take ownership. The C++ side - is responsible for managing the object’s lifetime and deallocating it - when it is no longer used. Warning: undefined behavior will ensue when - the C++ side deletes an object that is still referenced and used by - Python. */ - reference, - - /** This policy only applies to methods and properties. It references the - object without taking ownership similar to the above - return_value_policy::reference policy. In contrast to that policy, the - function or property’s implicit this argument (called the parent) is - considered to be the the owner of the return value (the child). - pybind11 then couples the lifetime of the parent to the child via a - reference relationship that ensures that the parent cannot be garbage - collected while Python is still using the child. More advanced - variations of this scheme are also possible using combinations of - return_value_policy::reference and the keep_alive call policy */ - reference_internal -}; - -/// Information record describing a Python buffer object -struct buffer_info { - void *ptr = nullptr; // Pointer to the underlying storage - size_t itemsize = 0; // Size of individual items in bytes - size_t size = 0; // Total number of entries - std::string format; // For homogeneous buffers, this should be set to format_descriptor<T>::format() - size_t ndim = 0; // Number of dimensions - std::vector<size_t> shape; // Shape of the tensor (1 entry per dimension) - std::vector<size_t> strides; // Number of entries between adjacent entries (for each per dimension) - - buffer_info() { } - - buffer_info(void *ptr, size_t itemsize, const std::string &format, size_t ndim, - const std::vector<size_t> &shape, const std::vector<size_t> &strides) - : ptr(ptr), itemsize(itemsize), size(1), format(format), - ndim(ndim), shape(shape), strides(strides) { - for (size_t i = 0; i < ndim; ++i) - size *= shape[i]; - } - - buffer_info(void *ptr, size_t itemsize, const std::string &format, size_t size) - : buffer_info(ptr, itemsize, format, 1, std::vector<size_t> { size }, - std::vector<size_t> { itemsize }) { } - - explicit buffer_info(Py_buffer *view, bool ownview = true) - : ptr(view->buf), itemsize((size_t) view->itemsize), size(1), format(view->format), - ndim((size_t) view->ndim), shape((size_t) view->ndim), strides((size_t) view->ndim), view(view), ownview(ownview) { - for (size_t i = 0; i < (size_t) view->ndim; ++i) { - shape[i] = (size_t) view->shape[i]; - strides[i] = (size_t) view->strides[i]; - size *= shape[i]; - } - } - - buffer_info(const buffer_info &) = delete; - buffer_info& operator=(const buffer_info &) = delete; - - buffer_info(buffer_info &&other) { - (*this) = std::move(other); - } - - buffer_info& operator=(buffer_info &&rhs) { - ptr = rhs.ptr; - itemsize = rhs.itemsize; - size = rhs.size; - format = std::move(rhs.format); - ndim = rhs.ndim; - shape = std::move(rhs.shape); - strides = std::move(rhs.strides); - std::swap(view, rhs.view); - std::swap(ownview, rhs.ownview); - return *this; - } - - ~buffer_info() { - if (view && ownview) { PyBuffer_Release(view); delete view; } - } - -private: - Py_buffer *view = nullptr; - bool ownview = false; -}; - -NAMESPACE_BEGIN(detail) - -inline static constexpr int log2(size_t n, int k = 0) { return (n <= 1) ? k : log2(n >> 1, k + 1); } - -inline std::string error_string(); - -/// Core part of the 'instance' type which POD (needed to be able to use 'offsetof') -template <typename type> struct instance_essentials { - PyObject_HEAD - type *value; - PyObject *weakrefs; - bool owned : 1; - bool holder_constructed : 1; -}; - -/// PyObject wrapper around generic types, includes a special holder type that is responsible for lifetime management -template <typename type, typename holder_type = std::unique_ptr<type>> struct instance : instance_essentials<type> { - holder_type holder; -}; - -struct overload_hash { - inline size_t operator()(const std::pair<const PyObject *, const char *>& v) const { - size_t value = std::hash<const void *>()(v.first); - value ^= std::hash<const void *>()(v.second) + 0x9e3779b9 + (value<<6) + (value>>2); - return value; - } -}; - -/// Internal data structure used to track registered instances and types -struct internals { - std::unordered_map<std::type_index, void*> registered_types_cpp; // std::type_index -> type_info - std::unordered_map<const void *, void*> registered_types_py; // PyTypeObject* -> type_info - std::unordered_multimap<const void *, void*> registered_instances; // void * -> PyObject* - std::unordered_set<std::pair<const PyObject *, const char *>, overload_hash> inactive_overload_cache; - std::unordered_map<std::type_index, std::vector<bool (*)(PyObject *, void *&)>> direct_conversions; - std::forward_list<void (*) (std::exception_ptr)> registered_exception_translators; - std::unordered_map<std::string, void *> shared_data; // Custom data to be shared across extensions - PyTypeObject *static_property_type; - PyTypeObject *default_metaclass; - std::unordered_map<size_t, PyObject *> bases; // one base type per `instance_size` (very few) -#if defined(WITH_THREAD) - decltype(PyThread_create_key()) tstate = 0; // Usually an int but a long on Cygwin64 with Python 3.x - PyInterpreterState *istate = nullptr; -#endif - - /// Return the appropriate base type for the given instance size - PyObject *get_base(size_t instance_size); -}; - -/// Return a reference to the current 'internals' information -inline internals &get_internals(); - -/// from __cpp_future__ import (convenient aliases from C++14/17) -#ifdef PYBIND11_CPP14 -using std::enable_if_t; -using std::conditional_t; -using std::remove_cv_t; -#else -template <bool B, typename T = void> using enable_if_t = typename std::enable_if<B, T>::type; -template <bool B, typename T, typename F> using conditional_t = typename std::conditional<B, T, F>::type; -template <typename T> using remove_cv_t = typename std::remove_cv<T>::type; -#endif - -/// Index sequences -#if defined(PYBIND11_CPP14) || defined(_MSC_VER) -using std::index_sequence; -using std::make_index_sequence; -#else -template<size_t ...> struct index_sequence { }; -template<size_t N, size_t ...S> struct make_index_sequence_impl : make_index_sequence_impl <N - 1, N - 1, S...> { }; -template<size_t ...S> struct make_index_sequence_impl <0, S...> { typedef index_sequence<S...> type; }; -template<size_t N> using make_index_sequence = typename make_index_sequence_impl<N>::type; -#endif - -/// Backports of std::bool_constant and std::negation to accomodate older compilers -template <bool B> using bool_constant = std::integral_constant<bool, B>; -template <typename T> struct negation : bool_constant<!T::value> { }; - -template <typename...> struct void_t_impl { using type = void; }; -template <typename... Ts> using void_t = typename void_t_impl<Ts...>::type; - -/// Compile-time all/any/none of that check the boolean value of all template types -#ifdef __cpp_fold_expressions -template <class... Ts> using all_of = bool_constant<(Ts::value && ...)>; -template <class... Ts> using any_of = bool_constant<(Ts::value || ...)>; -#elif !defined(_MSC_VER) -template <bool...> struct bools {}; -template <class... Ts> using all_of = std::is_same< - bools<Ts::value..., true>, - bools<true, Ts::value...>>; -template <class... Ts> using any_of = negation<all_of<negation<Ts>...>>; -#else -// MSVC has trouble with the above, but supports std::conjunction, which we can use instead (albeit -// at a slight loss of compilation efficiency). -template <class... Ts> using all_of = std::conjunction<Ts...>; -template <class... Ts> using any_of = std::disjunction<Ts...>; -#endif -template <class... Ts> using none_of = negation<any_of<Ts...>>; - -template <class T, template<class> class... Predicates> using satisfies_all_of = all_of<Predicates<T>...>; -template <class T, template<class> class... Predicates> using satisfies_any_of = any_of<Predicates<T>...>; -template <class T, template<class> class... Predicates> using satisfies_none_of = none_of<Predicates<T>...>; - -/// Strip the class from a method type -template <typename T> struct remove_class { }; -template <typename C, typename R, typename... A> struct remove_class<R (C::*)(A...)> { typedef R type(A...); }; -template <typename C, typename R, typename... A> struct remove_class<R (C::*)(A...) const> { typedef R type(A...); }; - -/// Helper template to strip away type modifiers -template <typename T> struct intrinsic_type { typedef T type; }; -template <typename T> struct intrinsic_type<const T> { typedef typename intrinsic_type<T>::type type; }; -template <typename T> struct intrinsic_type<T*> { typedef typename intrinsic_type<T>::type type; }; -template <typename T> struct intrinsic_type<T&> { typedef typename intrinsic_type<T>::type type; }; -template <typename T> struct intrinsic_type<T&&> { typedef typename intrinsic_type<T>::type type; }; -template <typename T, size_t N> struct intrinsic_type<const T[N]> { typedef typename intrinsic_type<T>::type type; }; -template <typename T, size_t N> struct intrinsic_type<T[N]> { typedef typename intrinsic_type<T>::type type; }; -template <typename T> using intrinsic_t = typename intrinsic_type<T>::type; - -/// Helper type to replace 'void' in some expressions -struct void_type { }; - -/// Helper template which holds a list of types -template <typename...> struct type_list { }; - -/// Compile-time integer sum -#ifdef __cpp_fold_expressions -template <typename... Ts> constexpr size_t constexpr_sum(Ts... ns) { return (0 + ... + size_t{ns}); } -#else -constexpr size_t constexpr_sum() { return 0; } -template <typename T, typename... Ts> -constexpr size_t constexpr_sum(T n, Ts... ns) { return size_t{n} + constexpr_sum(ns...); } -#endif - -NAMESPACE_BEGIN(constexpr_impl) -/// Implementation details for constexpr functions -constexpr int first(int i) { return i; } -template <typename T, typename... Ts> -constexpr int first(int i, T v, Ts... vs) { return v ? i : first(i + 1, vs...); } - -constexpr int last(int /*i*/, int result) { return result; } -template <typename T, typename... Ts> -constexpr int last(int i, int result, T v, Ts... vs) { return last(i + 1, v ? i : result, vs...); } -NAMESPACE_END(constexpr_impl) - -/// Return the index of the first type in Ts which satisfies Predicate<T>. Returns sizeof...(Ts) if -/// none match. -template <template<typename> class Predicate, typename... Ts> -constexpr int constexpr_first() { return constexpr_impl::first(0, Predicate<Ts>::value...); } - -/// Return the index of the last type in Ts which satisfies Predicate<T>, or -1 if none match. -template <template<typename> class Predicate, typename... Ts> -constexpr int constexpr_last() { return constexpr_impl::last(0, -1, Predicate<Ts>::value...); } - -// Extracts the first type from the template parameter pack matching the predicate, or Default if none match. -template <template<class> class Predicate, class Default, class... Ts> struct first_of; -template <template<class> class Predicate, class Default> struct first_of<Predicate, Default> { - using type = Default; -}; -template <template<class> class Predicate, class Default, class T, class... Ts> -struct first_of<Predicate, Default, T, Ts...> { - using type = typename std::conditional< - Predicate<T>::value, - T, - typename first_of<Predicate, Default, Ts...>::type - >::type; -}; -template <template<class> class Predicate, class Default, class... T> using first_of_t = typename first_of<Predicate, Default, T...>::type; - -/// Defer the evaluation of type T until types Us are instantiated -template <typename T, typename... /*Us*/> struct deferred_type { using type = T; }; -template <typename T, typename... Us> using deferred_t = typename deferred_type<T, Us...>::type; - -template <template<typename...> class Base> -struct is_template_base_of_impl { - template <typename... Us> static std::true_type check(Base<Us...> *); - static std::false_type check(...); -}; - -/// Check if a template is the base of a type. For example: -/// `is_template_base_of<Base, T>` is true if `struct T : Base<U> {}` where U can be anything -template <template<typename...> class Base, typename T> -#if !defined(_MSC_VER) -using is_template_base_of = decltype(is_template_base_of_impl<Base>::check((remove_cv_t<T>*)nullptr)); -#else // MSVC2015 has trouble with decltype in template aliases -struct is_template_base_of : decltype(is_template_base_of_impl<Base>::check((remove_cv_t<T>*)nullptr)) { }; -#endif - -/// Check if T is std::shared_ptr<U> where U can be anything -template <typename T> struct is_shared_ptr : std::false_type { }; -template <typename U> struct is_shared_ptr<std::shared_ptr<U>> : std::true_type { }; - -/// Ignore that a variable is unused in compiler warnings -inline void ignore_unused(const int *) { } - -NAMESPACE_END(detail) - -/// Returns a named pointer that is shared among all extension modules (using the same -/// pybind11 version) running in the current interpreter. Names starting with underscores -/// are reserved for internal usage. Returns `nullptr` if no matching entry was found. -inline PYBIND11_NOINLINE void* get_shared_data(const std::string& name) { - auto& internals = detail::get_internals(); - auto it = internals.shared_data.find(name); - return it != internals.shared_data.end() ? it->second : nullptr; -} - -/// Set the shared data that can be later recovered by `get_shared_data()`. -inline PYBIND11_NOINLINE void *set_shared_data(const std::string& name, void *data) { - detail::get_internals().shared_data[name] = data; - return data; -} - -/// Returns a typed reference to a shared data entry (by using `get_shared_data()`) if -/// such entry exists. Otherwise, a new object of default-constructible type `T` is -/// added to the shared data under the given name and a reference to it is returned. -template<typename T> T& get_or_create_shared_data(const std::string& name) { - auto& internals = detail::get_internals(); - auto it = internals.shared_data.find(name); - T* ptr = (T*) (it != internals.shared_data.end() ? it->second : nullptr); - if (!ptr) { - ptr = new T(); - internals.shared_data[name] = ptr; - } - return *ptr; -} - -/// Fetch and hold an error which was already set in Python -class error_already_set : public std::runtime_error { -public: - error_already_set() : std::runtime_error(detail::error_string()) { - PyErr_Fetch(&type, &value, &trace); - } - - error_already_set(const error_already_set &) = delete; - - error_already_set(error_already_set &&e) - : std::runtime_error(e.what()), type(e.type), value(e.value), - trace(e.trace) { e.type = e.value = e.trace = nullptr; } - - inline ~error_already_set(); // implementation in pybind11.h - - error_already_set& operator=(const error_already_set &) = delete; - - /// Give the error back to Python - void restore() { PyErr_Restore(type, value, trace); type = value = trace = nullptr; } - - /// Clear the held Python error state (the C++ `what()` message remains intact) - void clear() { restore(); PyErr_Clear(); } - -private: - PyObject *type, *value, *trace; -}; - -/// C++ bindings of builtin Python exceptions -class builtin_exception : public std::runtime_error { -public: - using std::runtime_error::runtime_error; - /// Set the error using the Python C API - virtual void set_error() const = 0; -}; - -#define PYBIND11_RUNTIME_EXCEPTION(name, type) \ - class name : public builtin_exception { public: \ - using builtin_exception::builtin_exception; \ - name() : name("") { } \ - void set_error() const override { PyErr_SetString(type, what()); } \ - }; - -PYBIND11_RUNTIME_EXCEPTION(stop_iteration, PyExc_StopIteration) -PYBIND11_RUNTIME_EXCEPTION(index_error, PyExc_IndexError) -PYBIND11_RUNTIME_EXCEPTION(key_error, PyExc_KeyError) -PYBIND11_RUNTIME_EXCEPTION(value_error, PyExc_ValueError) -PYBIND11_RUNTIME_EXCEPTION(type_error, PyExc_TypeError) -PYBIND11_RUNTIME_EXCEPTION(cast_error, PyExc_RuntimeError) /// Thrown when pybind11::cast or handle::call fail due to a type casting error -PYBIND11_RUNTIME_EXCEPTION(reference_cast_error, PyExc_RuntimeError) /// Used internally - -[[noreturn]] PYBIND11_NOINLINE inline void pybind11_fail(const char *reason) { throw std::runtime_error(reason); } -[[noreturn]] PYBIND11_NOINLINE inline void pybind11_fail(const std::string &reason) { throw std::runtime_error(reason); } - -template <typename T, typename SFINAE = void> struct format_descriptor { }; - -NAMESPACE_BEGIN(detail) -// Returns the index of the given type in the type char array below, and in the list in numpy.h -// The order here is: bool; 8 ints ((signed,unsigned)x(8,16,32,64)bits); float,double,long double; -// complex float,double,long double. Note that the long double types only participate when long -// double is actually longer than double (it isn't under MSVC). -// NB: not only the string below but also complex.h and numpy.h rely on this order. -template <typename T, typename SFINAE = void> struct is_fmt_numeric { static constexpr bool value = false; }; -template <typename T> struct is_fmt_numeric<T, enable_if_t<std::is_arithmetic<T>::value>> { - static constexpr bool value = true; - static constexpr int index = std::is_same<T, bool>::value ? 0 : 1 + ( - std::is_integral<T>::value ? detail::log2(sizeof(T))*2 + std::is_unsigned<T>::value : 8 + ( - std::is_same<T, double>::value ? 1 : std::is_same<T, long double>::value ? 2 : 0)); -}; -NAMESPACE_END(detail) - -template <typename T> struct format_descriptor<T, detail::enable_if_t<detail::is_fmt_numeric<T>::value>> { - static constexpr const char c = "?bBhHiIqQfdgFDG"[detail::is_fmt_numeric<T>::index]; - static constexpr const char value[2] = { c, '\0' }; - static std::string format() { return std::string(1, c); } -}; - -template <typename T> constexpr const char format_descriptor< - T, detail::enable_if_t<detail::is_fmt_numeric<T>::value>>::value[2]; - -NAMESPACE_BEGIN(detail) - -template <typename T, typename SFINAE = void> struct compare_buffer_info { - static bool compare(const buffer_info& b) { - return b.format == format_descriptor<T>::format() && b.itemsize == sizeof(T); - } -}; - -template <typename T> struct compare_buffer_info<T, detail::enable_if_t<std::is_integral<T>::value>> { - static bool compare(const buffer_info& b) { - return b.itemsize == sizeof(T) && (b.format == format_descriptor<T>::value || - ((sizeof(T) == sizeof(long)) && b.format == (std::is_unsigned<T>::value ? "L" : "l")) || - ((sizeof(T) == sizeof(size_t)) && b.format == (std::is_unsigned<T>::value ? "N" : "n"))); - } -}; - -NAMESPACE_END(detail) - -/// RAII wrapper that temporarily clears any Python error state -struct error_scope { - PyObject *type, *value, *trace; - error_scope() { PyErr_Fetch(&type, &value, &trace); } - ~error_scope() { PyErr_Restore(type, value, trace); } -}; - -/// Dummy destructor wrapper that can be used to expose classes with a private destructor -struct nodelete { template <typename T> void operator()(T*) { } }; - -// overload_cast requires variable templates: C++14 or MSVC -#if defined(PYBIND11_CPP14) || defined(_MSC_VER) -#define PYBIND11_OVERLOAD_CAST 1 - -NAMESPACE_BEGIN(detail) -template <typename... Args> -struct overload_cast_impl { - template <typename Return> - constexpr auto operator()(Return (*pf)(Args...)) const noexcept - -> decltype(pf) { return pf; } - - template <typename Return, typename Class> - constexpr auto operator()(Return (Class::*pmf)(Args...), std::false_type = {}) const noexcept - -> decltype(pmf) { return pmf; } - - template <typename Return, typename Class> - constexpr auto operator()(Return (Class::*pmf)(Args...) const, std::true_type) const noexcept - -> decltype(pmf) { return pmf; } -}; -NAMESPACE_END(detail) - -/// Syntax sugar for resolving overloaded function pointers: -/// - regular: static_cast<Return (Class::*)(Arg0, Arg1, Arg2)>(&Class::func) -/// - sweet: overload_cast<Arg0, Arg1, Arg2>(&Class::func) -template <typename... Args> -static constexpr detail::overload_cast_impl<Args...> overload_cast = {}; -// MSVC 2015 only accepts this particular initialization syntax for this variable template. - -/// Const member function selector for overload_cast -/// - regular: static_cast<Return (Class::*)(Arg) const>(&Class::func) -/// - sweet: overload_cast<Arg>(&Class::func, const_) -static constexpr auto const_ = std::true_type{}; - -#endif // overload_cast - -NAMESPACE_END(pybind11) +#include "detail/common.h" +#warning "Including 'common.h' is deprecated. It will be removed in v3.0. Use 'pybind11.h'." diff --git a/ext/pybind11/include/pybind11/complex.h b/ext/pybind11/include/pybind11/complex.h index 945ca0710..5dac27cc4 100644 --- a/ext/pybind11/include/pybind11/complex.h +++ b/ext/pybind11/include/pybind11/complex.h @@ -17,11 +17,20 @@ # undef I #endif -NAMESPACE_BEGIN(pybind11) +NAMESPACE_BEGIN(PYBIND11_NAMESPACE) + +template <typename T> struct format_descriptor<std::complex<T>, detail::enable_if_t<std::is_floating_point<T>::value>> { + static constexpr const char c = format_descriptor<T>::c; + static constexpr const char value[3] = { 'Z', c, '\0' }; + static std::string format() { return std::string(value); } +}; + +template <typename T> constexpr const char format_descriptor< + std::complex<T>, detail::enable_if_t<std::is_floating_point<T>::value>>::value[3]; + NAMESPACE_BEGIN(detail) -// The format codes are already in the string in common.h, we just need to provide a specialization -template <typename T> struct is_fmt_numeric<std::complex<T>> { +template <typename T> struct is_fmt_numeric<std::complex<T>, detail::enable_if_t<std::is_floating_point<T>::value>> { static constexpr bool value = true; static constexpr int index = is_fmt_numeric<T>::index + 3; }; @@ -49,4 +58,4 @@ public: PYBIND11_TYPE_CASTER(std::complex<T>, _("complex")); }; NAMESPACE_END(detail) -NAMESPACE_END(pybind11) +NAMESPACE_END(PYBIND11_NAMESPACE) diff --git a/ext/pybind11/include/pybind11/class_support.h b/ext/pybind11/include/pybind11/detail/class.h index 992703ff3..f745992a0 100644 --- a/ext/pybind11/include/pybind11/class_support.h +++ b/ext/pybind11/include/pybind11/detail/class.h @@ -1,5 +1,5 @@ /* - pybind11/class_support.h: Python C API implementation details for py::class_ + pybind11/detail/class.h: Python C API implementation details for py::class_ Copyright (c) 2017 Wenzel Jakob <wenzel.jakob@epfl.ch> @@ -9,11 +9,16 @@ #pragma once -#include "attr.h" +#include "../attr.h" -NAMESPACE_BEGIN(pybind11) +NAMESPACE_BEGIN(PYBIND11_NAMESPACE) NAMESPACE_BEGIN(detail) +inline PyTypeObject *type_incref(PyTypeObject *type) { + Py_INCREF(type); + return type; +} + #if !defined(PYPY_VERSION) /// `pybind11_static_property.__get__()`: Always pass the class instead of the instance. @@ -49,7 +54,7 @@ inline PyTypeObject *make_static_property_type() { auto type = &heap_type->ht_type; type->tp_name = name; - type->tp_base = &PyProperty_Type; + type->tp_base = type_incref(&PyProperty_Type); type->tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE | Py_TPFLAGS_HEAPTYPE; type->tp_descr_get = pybind11_static_get; type->tp_descr_set = pybind11_static_set; @@ -87,34 +92,6 @@ inline PyTypeObject *make_static_property_type() { #endif // PYPY -/** Inheriting from multiple C++ types in Python is not supported -- set an error instead. - A Python definition (`class C(A, B): pass`) will call `tp_new` so we check for multiple - C++ bases here. On the other hand, C++ type definitions (`py::class_<C, A, B>(m, "C")`) - don't not use `tp_new` and will not trigger this error. */ -extern "C" inline PyObject *pybind11_meta_new(PyTypeObject *metaclass, PyObject *args, - PyObject *kwargs) { - PyObject *bases = PyTuple_GetItem(args, 1); // arguments: (name, bases, dict) - if (!bases) - return nullptr; - - auto &internals = get_internals(); - auto num_cpp_bases = 0; - for (auto base : reinterpret_borrow<tuple>(bases)) { - auto base_type = (PyTypeObject *) base.ptr(); - auto instance_size = static_cast<size_t>(base_type->tp_basicsize); - if (PyObject_IsSubclass(base.ptr(), internals.get_base(instance_size))) - ++num_cpp_bases; - } - - if (num_cpp_bases > 1) { - PyErr_SetString(PyExc_TypeError, "Can't inherit from multiple C++ classes in Python." - "Use py::class_ to define the class in C++ instead."); - return nullptr; - } else { - return PyType_Type.tp_new(metaclass, args, kwargs); - } -} - /** Types with static properties need to handle `Type.static_prop = x` in a specific way. By default, Python replaces the `static_property` itself, but for wrapped C++ types we need to call `static_property.__set__()` in order to propagate the new value to @@ -124,8 +101,15 @@ extern "C" inline int pybind11_meta_setattro(PyObject* obj, PyObject* name, PyOb // descriptor (`property`) instead of calling `tp_descr_get` (`property.__get__()`). PyObject *descr = _PyType_Lookup((PyTypeObject *) obj, name); - // Call `static_property.__set__()` instead of replacing the `static_property`. - if (descr && PyObject_IsInstance(descr, (PyObject *) get_internals().static_property_type)) { + // The following assignment combinations are possible: + // 1. `Type.static_prop = value` --> descr_set: `Type.static_prop.__set__(value)` + // 2. `Type.static_prop = other_static_prop` --> setattro: replace existing `static_prop` + // 3. `Type.regular_attribute = value` --> setattro: regular attribute assignment + const auto static_prop = (PyObject *) get_internals().static_property_type; + const auto call_descr_set = descr && PyObject_IsInstance(descr, static_prop) + && !PyObject_IsInstance(value, static_prop); + if (call_descr_set) { + // Call `static_property.__set__()` instead of replacing the `static_property`. #if !defined(PYPY_VERSION) return Py_TYPE(descr)->tp_descr_set(descr, obj, value); #else @@ -137,10 +121,30 @@ extern "C" inline int pybind11_meta_setattro(PyObject* obj, PyObject* name, PyOb } #endif } else { + // Replace existing attribute. return PyType_Type.tp_setattro(obj, name, value); } } +#if PY_MAJOR_VERSION >= 3 +/** + * Python 3's PyInstanceMethod_Type hides itself via its tp_descr_get, which prevents aliasing + * methods via cls.attr("m2") = cls.attr("m1"): instead the tp_descr_get returns a plain function, + * when called on a class, or a PyMethod, when called on an instance. Override that behaviour here + * to do a special case bypass for PyInstanceMethod_Types. + */ +extern "C" inline PyObject *pybind11_meta_getattro(PyObject *obj, PyObject *name) { + PyObject *descr = _PyType_Lookup((PyTypeObject *) obj, name); + if (descr && PyInstanceMethod_Check(descr)) { + Py_INCREF(descr); + return descr; + } + else { + return PyType_Type.tp_getattro(obj, name); + } +} +#endif + /** This metaclass is assigned by default to all pybind11 types and is required in order for static properties to function correctly. Users may override this using `py::metaclass`. Return value: New reference. */ @@ -163,11 +167,13 @@ inline PyTypeObject* make_default_metaclass() { auto type = &heap_type->ht_type; type->tp_name = name; - type->tp_base = &PyType_Type; + type->tp_base = type_incref(&PyType_Type); type->tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE | Py_TPFLAGS_HEAPTYPE; - type->tp_new = pybind11_meta_new; type->tp_setattro = pybind11_meta_setattro; +#if PY_MAJOR_VERSION >= 3 + type->tp_getattro = pybind11_meta_getattro; +#endif if (PyType_Ready(type) < 0) pybind11_fail("make_default_metaclass(): failure in PyType_Ready()!"); @@ -177,17 +183,81 @@ inline PyTypeObject* make_default_metaclass() { return type; } +/// For multiple inheritance types we need to recursively register/deregister base pointers for any +/// base classes with pointers that are difference from the instance value pointer so that we can +/// correctly recognize an offset base class pointer. This calls a function with any offset base ptrs. +inline void traverse_offset_bases(void *valueptr, const detail::type_info *tinfo, instance *self, + bool (*f)(void * /*parentptr*/, instance * /*self*/)) { + for (handle h : reinterpret_borrow<tuple>(tinfo->type->tp_bases)) { + if (auto parent_tinfo = get_type_info((PyTypeObject *) h.ptr())) { + for (auto &c : parent_tinfo->implicit_casts) { + if (c.first == tinfo->cpptype) { + auto *parentptr = c.second(valueptr); + if (parentptr != valueptr) + f(parentptr, self); + traverse_offset_bases(parentptr, parent_tinfo, self, f); + break; + } + } + } + } +} + +inline bool register_instance_impl(void *ptr, instance *self) { + get_internals().registered_instances.emplace(ptr, self); + return true; // unused, but gives the same signature as the deregister func +} +inline bool deregister_instance_impl(void *ptr, instance *self) { + auto ®istered_instances = get_internals().registered_instances; + auto range = registered_instances.equal_range(ptr); + for (auto it = range.first; it != range.second; ++it) { + if (Py_TYPE(self) == Py_TYPE(it->second)) { + registered_instances.erase(it); + return true; + } + } + return false; +} + +inline void register_instance(instance *self, void *valptr, const type_info *tinfo) { + register_instance_impl(valptr, self); + if (!tinfo->simple_ancestors) + traverse_offset_bases(valptr, tinfo, self, register_instance_impl); +} + +inline bool deregister_instance(instance *self, void *valptr, const type_info *tinfo) { + bool ret = deregister_instance_impl(valptr, self); + if (!tinfo->simple_ancestors) + traverse_offset_bases(valptr, tinfo, self, deregister_instance_impl); + return ret; +} + +/// Instance creation function for all pybind11 types. It allocates the internal instance layout for +/// holding C++ objects and holders. Allocation is done lazily (the first time the instance is cast +/// to a reference or pointer), and initialization is done by an `__init__` function. +inline PyObject *make_new_instance(PyTypeObject *type) { +#if defined(PYPY_VERSION) + // PyPy gets tp_basicsize wrong (issue 2482) under multiple inheritance when the first inherited + // object is a a plain Python type (i.e. not derived from an extension type). Fix it. + ssize_t instance_size = static_cast<ssize_t>(sizeof(instance)); + if (type->tp_basicsize < instance_size) { + type->tp_basicsize = instance_size; + } +#endif + PyObject *self = type->tp_alloc(type, 0); + auto inst = reinterpret_cast<instance *>(self); + // Allocate the value/holder internals: + inst->allocate_layout(); + + inst->owned = true; + + return self; +} + /// Instance creation function for all pybind11 types. It only allocates space for the /// C++ object, but doesn't call the constructor -- an `__init__` function must do that. extern "C" inline PyObject *pybind11_object_new(PyTypeObject *type, PyObject *, PyObject *) { - PyObject *self = type->tp_alloc(type, 0); - auto instance = (instance_essentials<void> *) self; - auto tinfo = get_type_info(type); - instance->value = tinfo->operator_new(tinfo->type_size); - instance->owned = true; - instance->holder_constructed = false; - get_internals().registered_instances.emplace(instance->value, self); - return self; + return make_new_instance(type); } /// An `__init__` function constructs the C++ object. Users should provide at least one @@ -205,50 +275,89 @@ extern "C" inline int pybind11_object_init(PyObject *self, PyObject *, PyObject return -1; } -/// Instance destructor function for all pybind11 types. It calls `type_info.dealloc` -/// to destroy the C++ object itself, while the rest is Python bookkeeping. -extern "C" inline void pybind11_object_dealloc(PyObject *self) { - auto instance = (instance_essentials<void> *) self; - if (instance->value) { - auto type = Py_TYPE(self); - get_type_info(type)->dealloc(self); - - auto ®istered_instances = get_internals().registered_instances; - auto range = registered_instances.equal_range(instance->value); - bool found = false; - for (auto it = range.first; it != range.second; ++it) { - if (type == Py_TYPE(it->second)) { - registered_instances.erase(it); - found = true; - break; - } - } - if (!found) - pybind11_fail("pybind11_object_dealloc(): Tried to deallocate unregistered instance!"); +inline void add_patient(PyObject *nurse, PyObject *patient) { + auto &internals = get_internals(); + auto instance = reinterpret_cast<detail::instance *>(nurse); + instance->has_patients = true; + Py_INCREF(patient); + internals.patients[nurse].push_back(patient); +} + +inline void clear_patients(PyObject *self) { + auto instance = reinterpret_cast<detail::instance *>(self); + auto &internals = get_internals(); + auto pos = internals.patients.find(self); + assert(pos != internals.patients.end()); + // Clearing the patients can cause more Python code to run, which + // can invalidate the iterator. Extract the vector of patients + // from the unordered_map first. + auto patients = std::move(pos->second); + internals.patients.erase(pos); + instance->has_patients = false; + for (PyObject *&patient : patients) + Py_CLEAR(patient); +} + +/// Clears all internal data from the instance and removes it from registered instances in +/// preparation for deallocation. +inline void clear_instance(PyObject *self) { + auto instance = reinterpret_cast<detail::instance *>(self); - if (instance->weakrefs) - PyObject_ClearWeakRefs(self); + // Deallocate any values/holders, if present: + for (auto &v_h : values_and_holders(instance)) { + if (v_h) { - PyObject **dict_ptr = _PyObject_GetDictPtr(self); - if (dict_ptr) - Py_CLEAR(*dict_ptr); + // We have to deregister before we call dealloc because, for virtual MI types, we still + // need to be able to get the parent pointers. + if (v_h.instance_registered() && !deregister_instance(instance, v_h.value_ptr(), v_h.type)) + pybind11_fail("pybind11_object_dealloc(): Tried to deallocate unregistered instance!"); + + if (instance->owned || v_h.holder_constructed()) + v_h.type->dealloc(v_h); + } } - Py_TYPE(self)->tp_free(self); + // Deallocate the value/holder layout internals: + instance->deallocate_layout(); + + if (instance->weakrefs) + PyObject_ClearWeakRefs(self); + + PyObject **dict_ptr = _PyObject_GetDictPtr(self); + if (dict_ptr) + Py_CLEAR(*dict_ptr); + + if (instance->has_patients) + clear_patients(self); +} + +/// Instance destructor function for all pybind11 types. It calls `type_info.dealloc` +/// to destroy the C++ object itself, while the rest is Python bookkeeping. +extern "C" inline void pybind11_object_dealloc(PyObject *self) { + clear_instance(self); + + auto type = Py_TYPE(self); + type->tp_free(self); + + // `type->tp_dealloc != pybind11_object_dealloc` means that we're being called + // as part of a derived type's dealloc, in which case we're not allowed to decref + // the type here. For cross-module compatibility, we shouldn't compare directly + // with `pybind11_object_dealloc`, but with the common one stashed in internals. + auto pybind11_object_type = (PyTypeObject *) get_internals().instance_base; + if (type->tp_dealloc == pybind11_object_type->tp_dealloc) + Py_DECREF(type); } -/** Create a type which can be used as a common base for all classes with the same - instance size, i.e. all classes with the same `sizeof(holder_type)`. This is +/** Create the type which can be used as a common base for all classes. This is needed in order to satisfy Python's requirements for multiple inheritance. Return value: New reference. */ -inline PyObject *make_object_base_type(size_t instance_size) { - auto name = "pybind11_object_" + std::to_string(instance_size); - auto name_obj = reinterpret_steal<object>(PYBIND11_FROM_STRING(name.c_str())); +inline PyObject *make_object_base_type(PyTypeObject *metaclass) { + constexpr auto *name = "pybind11_object"; + auto name_obj = reinterpret_steal<object>(PYBIND11_FROM_STRING(name)); /* Danger zone: from now (and until PyType_Ready), make sure to issue no Python C API calls which could potentially invoke the garbage collector (the GC will call type_traverse(), which will in turn find the newly constructed type in an invalid state) */ - auto metaclass = get_internals().default_metaclass; auto heap_type = (PyHeapTypeObject *) metaclass->tp_alloc(metaclass, 0); if (!heap_type) pybind11_fail("make_object_base_type(): error allocating type!"); @@ -259,9 +368,9 @@ inline PyObject *make_object_base_type(size_t instance_size) { #endif auto type = &heap_type->ht_type; - type->tp_name = strdup(name.c_str()); - type->tp_base = &PyBaseObject_Type; - type->tp_basicsize = static_cast<ssize_t>(instance_size); + type->tp_name = name; + type->tp_base = type_incref(&PyBaseObject_Type); + type->tp_basicsize = static_cast<ssize_t>(sizeof(instance)); type->tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE | Py_TPFLAGS_HEAPTYPE; type->tp_new = pybind11_object_new; @@ -269,7 +378,7 @@ inline PyObject *make_object_base_type(size_t instance_size) { type->tp_dealloc = pybind11_object_dealloc; /* Support weak references (needed for the keep_alive feature) */ - type->tp_weaklistoffset = offsetof(instance_essentials<void>, weakrefs); + type->tp_weaklistoffset = offsetof(instance, weakrefs); if (PyType_Ready(type) < 0) pybind11_fail("PyType_Ready failed in make_object_base_type():" + error_string()); @@ -280,20 +389,6 @@ inline PyObject *make_object_base_type(size_t instance_size) { return (PyObject *) heap_type; } -/** Return the appropriate base type for the given instance size. The results are cached - in `internals.bases` so that only a single base is ever created for any size value. - Return value: Borrowed reference. */ -inline PyObject *internals::get_base(size_t instance_size) { - auto it = bases.find(instance_size); - if (it != bases.end()) { - return it->second; - } else { - auto base = make_object_base_type(instance_size); - bases[instance_size] = base; - return base; - } -} - /// dynamic_attr: Support for `d = instance.__dict__`. extern "C" inline PyObject *pybind11_get_dict(PyObject *self, void *) { PyObject *&dict = *_PyObject_GetDictPtr(self); @@ -341,7 +436,7 @@ inline void enable_dynamic_attributes(PyHeapTypeObject *heap_type) { #endif type->tp_flags |= Py_TPFLAGS_HAVE_GC; type->tp_dictoffset = type->tp_basicsize; // place dict at the end - type->tp_basicsize += sizeof(PyObject *); // and allocate enough space for it + type->tp_basicsize += (ssize_t)sizeof(PyObject *); // and allocate enough space for it type->tp_traverse = pybind11_traverse; type->tp_clear = pybind11_clear; @@ -354,20 +449,26 @@ inline void enable_dynamic_attributes(PyHeapTypeObject *heap_type) { /// buffer_protocol: Fill in the view as specified by flags. extern "C" inline int pybind11_getbuffer(PyObject *obj, Py_buffer *view, int flags) { - auto tinfo = get_type_info(Py_TYPE(obj)); + // Look for a `get_buffer` implementation in this type's info or any bases (following MRO). + type_info *tinfo = nullptr; + for (auto type : reinterpret_borrow<tuple>(Py_TYPE(obj)->tp_mro)) { + tinfo = get_type_info((PyTypeObject *) type.ptr()); + if (tinfo && tinfo->get_buffer) + break; + } if (view == nullptr || obj == nullptr || !tinfo || !tinfo->get_buffer) { if (view) view->obj = nullptr; - PyErr_SetString(PyExc_BufferError, "generic_type::getbuffer(): Internal error"); + PyErr_SetString(PyExc_BufferError, "pybind11_getbuffer(): Internal error"); return -1; } - memset(view, 0, sizeof(Py_buffer)); + std::memset(view, 0, sizeof(Py_buffer)); buffer_info *info = tinfo->get_buffer(obj, tinfo->get_buffer_data); view->obj = obj; view->ndim = 1; view->internal = info; view->buf = info->ptr; - view->itemsize = (ssize_t) info->itemsize; + view->itemsize = info->itemsize; view->len = view->itemsize; for (auto s : info->shape) view->len *= s; @@ -375,8 +476,8 @@ extern "C" inline int pybind11_getbuffer(PyObject *obj, Py_buffer *view, int fla view->format = const_cast<char *>(info->format.c_str()); if ((flags & PyBUF_STRIDES) == PyBUF_STRIDES) { view->ndim = (int) info->ndim; - view->strides = (ssize_t *) &info->strides[0]; - view->shape = (ssize_t *) &info->shape[0]; + view->strides = &info->strides[0]; + view->shape = &info->shape[0]; } Py_INCREF(view->obj); return 0; @@ -419,12 +520,11 @@ inline PyObject* make_new_python_type(const type_record &rec) { module = rec.scope.attr("__name__"); } + auto full_name = c_str( #if !defined(PYPY_VERSION) - const auto full_name = module ? str(module).cast<std::string>() + "." + rec.name - : std::string(rec.name); -#else - const auto full_name = std::string(rec.name); + module ? str(module).cast<std::string>() + "." + rec.name : #endif + rec.name); char *tp_doc = nullptr; if (rec.doc && options::show_user_defined_docstrings()) { @@ -437,7 +537,7 @@ inline PyObject* make_new_python_type(const type_record &rec) { auto &internals = get_internals(); auto bases = tuple(rec.bases); - auto base = (bases.size() == 0) ? internals.get_base(rec.instance_size) + auto base = (bases.size() == 0) ? internals.instance_base : bases[0].ptr(); /* Danger zone: from now (and until PyType_Ready), make sure to @@ -457,10 +557,10 @@ inline PyObject* make_new_python_type(const type_record &rec) { #endif auto type = &heap_type->ht_type; - type->tp_name = strdup(full_name.c_str()); + type->tp_name = full_name; type->tp_doc = tp_doc; - type->tp_base = (PyTypeObject *) handle(base).inc_ref().ptr(); - type->tp_basicsize = static_cast<ssize_t>(rec.instance_size); + type->tp_base = type_incref((PyTypeObject *)base); + type->tp_basicsize = static_cast<ssize_t>(sizeof(instance)); if (bases.size() > 0) type->tp_bases = bases.release().ptr(); @@ -493,6 +593,8 @@ inline PyObject* make_new_python_type(const type_record &rec) { /* Register type with the parent scope */ if (rec.scope) setattr(rec.scope, rec.name, (PyObject *) type); + else + Py_INCREF(type); // Keep it alive forever (reference leak) if (module) // Needed by pydoc setattr((PyObject *) type, "__module__", module); @@ -501,4 +603,4 @@ inline PyObject* make_new_python_type(const type_record &rec) { } NAMESPACE_END(detail) -NAMESPACE_END(pybind11) +NAMESPACE_END(PYBIND11_NAMESPACE) diff --git a/ext/pybind11/include/pybind11/detail/common.h b/ext/pybind11/include/pybind11/detail/common.h new file mode 100644 index 000000000..8f763f08a --- /dev/null +++ b/ext/pybind11/include/pybind11/detail/common.h @@ -0,0 +1,800 @@ +/* + pybind11/detail/common.h -- Basic macros + + Copyright (c) 2016 Wenzel Jakob <wenzel.jakob@epfl.ch> + + All rights reserved. Use of this source code is governed by a + BSD-style license that can be found in the LICENSE file. +*/ + +#pragma once + +#if !defined(NAMESPACE_BEGIN) +# define NAMESPACE_BEGIN(name) namespace name { +#endif +#if !defined(NAMESPACE_END) +# define NAMESPACE_END(name) } +#endif + +// Robust support for some features and loading modules compiled against different pybind versions +// requires forcing hidden visibility on pybind code, so we enforce this by setting the attribute on +// the main `pybind11` namespace. +#if !defined(PYBIND11_NAMESPACE) +# ifdef __GNUG__ +# define PYBIND11_NAMESPACE pybind11 __attribute__((visibility("hidden"))) +# else +# define PYBIND11_NAMESPACE pybind11 +# endif +#endif + +#if !defined(_MSC_VER) && !defined(__INTEL_COMPILER) +# if __cplusplus >= 201402L +# define PYBIND11_CPP14 +# if __cplusplus > 201402L /* Temporary: should be updated to >= the final C++17 value once known */ +# define PYBIND11_CPP17 +# endif +# endif +#elif defined(_MSC_VER) +// MSVC sets _MSVC_LANG rather than __cplusplus (supposedly until the standard is fully implemented) +# if _MSVC_LANG >= 201402L +# define PYBIND11_CPP14 +# if _MSVC_LANG > 201402L && _MSC_VER >= 1910 +# define PYBIND11_CPP17 +# endif +# endif +#endif + +// Compiler version assertions +#if defined(__INTEL_COMPILER) +# if __INTEL_COMPILER < 1500 +# error pybind11 requires Intel C++ compiler v15 or newer +# endif +#elif defined(__clang__) && !defined(__apple_build_version__) +# if __clang_major__ < 3 || (__clang_major__ == 3 && __clang_minor__ < 3) +# error pybind11 requires clang 3.3 or newer +# endif +#elif defined(__clang__) +// Apple changes clang version macros to its Xcode version; the first Xcode release based on +// (upstream) clang 3.3 was Xcode 5: +# if __clang_major__ < 5 +# error pybind11 requires Xcode/clang 5.0 or newer +# endif +#elif defined(__GNUG__) +# if __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 8) +# error pybind11 requires gcc 4.8 or newer +# endif +#elif defined(_MSC_VER) +// Pybind hits various compiler bugs in 2015u2 and earlier, and also makes use of some stl features +// (e.g. std::negation) added in 2015u3: +# if _MSC_FULL_VER < 190024210 +# error pybind11 requires MSVC 2015 update 3 or newer +# endif +#endif + +#if !defined(PYBIND11_EXPORT) +# if defined(WIN32) || defined(_WIN32) +# define PYBIND11_EXPORT __declspec(dllexport) +# else +# define PYBIND11_EXPORT __attribute__ ((visibility("default"))) +# endif +#endif + +#if defined(_MSC_VER) +# define PYBIND11_NOINLINE __declspec(noinline) +#else +# define PYBIND11_NOINLINE __attribute__ ((noinline)) +#endif + +#if defined(PYBIND11_CPP14) +# define PYBIND11_DEPRECATED(reason) [[deprecated(reason)]] +#else +# define PYBIND11_DEPRECATED(reason) __attribute__((deprecated(reason))) +#endif + +#define PYBIND11_VERSION_MAJOR 2 +#define PYBIND11_VERSION_MINOR 2 +#define PYBIND11_VERSION_PATCH 1 + +/// Include Python header, disable linking to pythonX_d.lib on Windows in debug mode +#if defined(_MSC_VER) +# if (PY_MAJOR_VERSION == 3 && PY_MINOR_VERSION < 4) +# define HAVE_ROUND 1 +# endif +# pragma warning(push) +# pragma warning(disable: 4510 4610 4512 4005) +# if defined(_DEBUG) +# define PYBIND11_DEBUG_MARKER +# undef _DEBUG +# endif +#endif + +#include <Python.h> +#include <frameobject.h> +#include <pythread.h> + +#if defined(_WIN32) && (defined(min) || defined(max)) +# error Macro clash with min and max -- define NOMINMAX when compiling your program on Windows +#endif + +#if defined(isalnum) +# undef isalnum +# undef isalpha +# undef islower +# undef isspace +# undef isupper +# undef tolower +# undef toupper +#endif + +#if defined(_MSC_VER) +# if defined(PYBIND11_DEBUG_MARKER) +# define _DEBUG +# undef PYBIND11_DEBUG_MARKER +# endif +# pragma warning(pop) +#endif + +#include <cstddef> +#include <cstring> +#include <forward_list> +#include <vector> +#include <string> +#include <stdexcept> +#include <unordered_set> +#include <unordered_map> +#include <memory> +#include <typeindex> +#include <type_traits> + +#if PY_MAJOR_VERSION >= 3 /// Compatibility macros for various Python versions +#define PYBIND11_INSTANCE_METHOD_NEW(ptr, class_) PyInstanceMethod_New(ptr) +#define PYBIND11_INSTANCE_METHOD_CHECK PyInstanceMethod_Check +#define PYBIND11_INSTANCE_METHOD_GET_FUNCTION PyInstanceMethod_GET_FUNCTION +#define PYBIND11_BYTES_CHECK PyBytes_Check +#define PYBIND11_BYTES_FROM_STRING PyBytes_FromString +#define PYBIND11_BYTES_FROM_STRING_AND_SIZE PyBytes_FromStringAndSize +#define PYBIND11_BYTES_AS_STRING_AND_SIZE PyBytes_AsStringAndSize +#define PYBIND11_BYTES_AS_STRING PyBytes_AsString +#define PYBIND11_BYTES_SIZE PyBytes_Size +#define PYBIND11_LONG_CHECK(o) PyLong_Check(o) +#define PYBIND11_LONG_AS_LONGLONG(o) PyLong_AsLongLong(o) +#define PYBIND11_BYTES_NAME "bytes" +#define PYBIND11_STRING_NAME "str" +#define PYBIND11_SLICE_OBJECT PyObject +#define PYBIND11_FROM_STRING PyUnicode_FromString +#define PYBIND11_STR_TYPE ::pybind11::str +#define PYBIND11_BOOL_ATTR "__bool__" +#define PYBIND11_NB_BOOL(ptr) ((ptr)->nb_bool) +#define PYBIND11_PLUGIN_IMPL(name) \ + extern "C" PYBIND11_EXPORT PyObject *PyInit_##name() + +#else +#define PYBIND11_INSTANCE_METHOD_NEW(ptr, class_) PyMethod_New(ptr, nullptr, class_) +#define PYBIND11_INSTANCE_METHOD_CHECK PyMethod_Check +#define PYBIND11_INSTANCE_METHOD_GET_FUNCTION PyMethod_GET_FUNCTION +#define PYBIND11_BYTES_CHECK PyString_Check +#define PYBIND11_BYTES_FROM_STRING PyString_FromString +#define PYBIND11_BYTES_FROM_STRING_AND_SIZE PyString_FromStringAndSize +#define PYBIND11_BYTES_AS_STRING_AND_SIZE PyString_AsStringAndSize +#define PYBIND11_BYTES_AS_STRING PyString_AsString +#define PYBIND11_BYTES_SIZE PyString_Size +#define PYBIND11_LONG_CHECK(o) (PyInt_Check(o) || PyLong_Check(o)) +#define PYBIND11_LONG_AS_LONGLONG(o) (PyInt_Check(o) ? (long long) PyLong_AsLong(o) : PyLong_AsLongLong(o)) +#define PYBIND11_BYTES_NAME "str" +#define PYBIND11_STRING_NAME "unicode" +#define PYBIND11_SLICE_OBJECT PySliceObject +#define PYBIND11_FROM_STRING PyString_FromString +#define PYBIND11_STR_TYPE ::pybind11::bytes +#define PYBIND11_BOOL_ATTR "__nonzero__" +#define PYBIND11_NB_BOOL(ptr) ((ptr)->nb_nonzero) +#define PYBIND11_PLUGIN_IMPL(name) \ + static PyObject *pybind11_init_wrapper(); \ + extern "C" PYBIND11_EXPORT void init##name() { \ + (void)pybind11_init_wrapper(); \ + } \ + PyObject *pybind11_init_wrapper() +#endif + +#if PY_VERSION_HEX >= 0x03050000 && PY_VERSION_HEX < 0x03050200 +extern "C" { + struct _Py_atomic_address { void *value; }; + PyAPI_DATA(_Py_atomic_address) _PyThreadState_Current; +} +#endif + +#define PYBIND11_TRY_NEXT_OVERLOAD ((PyObject *) 1) // special failure return code +#define PYBIND11_STRINGIFY(x) #x +#define PYBIND11_TOSTRING(x) PYBIND11_STRINGIFY(x) +#define PYBIND11_CONCAT(first, second) first##second + +/** \rst + ***Deprecated in favor of PYBIND11_MODULE*** + + This macro creates the entry point that will be invoked when the Python interpreter + imports a plugin library. Please create a `module` in the function body and return + the pointer to its underlying Python object at the end. + + .. code-block:: cpp + + PYBIND11_PLUGIN(example) { + pybind11::module m("example", "pybind11 example plugin"); + /// Set up bindings here + return m.ptr(); + } +\endrst */ +#define PYBIND11_PLUGIN(name) \ + PYBIND11_DEPRECATED("PYBIND11_PLUGIN is deprecated, use PYBIND11_MODULE") \ + static PyObject *pybind11_init(); \ + PYBIND11_PLUGIN_IMPL(name) { \ + int major, minor; \ + if (sscanf(Py_GetVersion(), "%i.%i", &major, &minor) != 2) { \ + PyErr_SetString(PyExc_ImportError, "Can't parse Python version."); \ + return nullptr; \ + } else if (major != PY_MAJOR_VERSION || minor != PY_MINOR_VERSION) { \ + PyErr_Format(PyExc_ImportError, \ + "Python version mismatch: module was compiled for " \ + "version %i.%i, while the interpreter is running " \ + "version %i.%i.", PY_MAJOR_VERSION, PY_MINOR_VERSION, \ + major, minor); \ + return nullptr; \ + } \ + try { \ + return pybind11_init(); \ + } catch (pybind11::error_already_set &e) { \ + PyErr_SetString(PyExc_ImportError, e.what()); \ + return nullptr; \ + } catch (const std::exception &e) { \ + PyErr_SetString(PyExc_ImportError, e.what()); \ + return nullptr; \ + } \ + } \ + PyObject *pybind11_init() + +/** \rst + This macro creates the entry point that will be invoked when the Python interpreter + imports an extension module. The module name is given as the fist argument and it + should not be in quotes. The second macro argument defines a variable of type + `py::module` which can be used to initialize the module. + + .. code-block:: cpp + + PYBIND11_MODULE(example, m) { + m.doc() = "pybind11 example module"; + + // Add bindings here + m.def("foo", []() { + return "Hello, World!"; + }); + } +\endrst */ +#define PYBIND11_MODULE(name, variable) \ + static void PYBIND11_CONCAT(pybind11_init_, name)(pybind11::module &); \ + PYBIND11_PLUGIN_IMPL(name) { \ + int major, minor; \ + if (sscanf(Py_GetVersion(), "%i.%i", &major, &minor) != 2) { \ + PyErr_SetString(PyExc_ImportError, "Can't parse Python version."); \ + return nullptr; \ + } else if (major != PY_MAJOR_VERSION || minor != PY_MINOR_VERSION) { \ + PyErr_Format(PyExc_ImportError, \ + "Python version mismatch: module was compiled for " \ + "version %i.%i, while the interpreter is running " \ + "version %i.%i.", PY_MAJOR_VERSION, PY_MINOR_VERSION, \ + major, minor); \ + return nullptr; \ + } \ + auto m = pybind11::module(PYBIND11_TOSTRING(name)); \ + try { \ + PYBIND11_CONCAT(pybind11_init_, name)(m); \ + return m.ptr(); \ + } catch (pybind11::error_already_set &e) { \ + PyErr_SetString(PyExc_ImportError, e.what()); \ + return nullptr; \ + } catch (const std::exception &e) { \ + PyErr_SetString(PyExc_ImportError, e.what()); \ + return nullptr; \ + } \ + } \ + void PYBIND11_CONCAT(pybind11_init_, name)(pybind11::module &variable) + + +NAMESPACE_BEGIN(PYBIND11_NAMESPACE) + +using ssize_t = Py_ssize_t; +using size_t = std::size_t; + +/// Approach used to cast a previously unknown C++ instance into a Python object +enum class return_value_policy : uint8_t { + /** This is the default return value policy, which falls back to the policy + return_value_policy::take_ownership when the return value is a pointer. + Otherwise, it uses return_value::move or return_value::copy for rvalue + and lvalue references, respectively. See below for a description of what + all of these different policies do. */ + automatic = 0, + + /** As above, but use policy return_value_policy::reference when the return + value is a pointer. This is the default conversion policy for function + arguments when calling Python functions manually from C++ code (i.e. via + handle::operator()). You probably won't need to use this. */ + automatic_reference, + + /** Reference an existing object (i.e. do not create a new copy) and take + ownership. Python will call the destructor and delete operator when the + object’s reference count reaches zero. Undefined behavior ensues when + the C++ side does the same.. */ + take_ownership, + + /** Create a new copy of the returned object, which will be owned by + Python. This policy is comparably safe because the lifetimes of the two + instances are decoupled. */ + copy, + + /** Use std::move to move the return value contents into a new instance + that will be owned by Python. This policy is comparably safe because the + lifetimes of the two instances (move source and destination) are + decoupled. */ + move, + + /** Reference an existing object, but do not take ownership. The C++ side + is responsible for managing the object’s lifetime and deallocating it + when it is no longer used. Warning: undefined behavior will ensue when + the C++ side deletes an object that is still referenced and used by + Python. */ + reference, + + /** This policy only applies to methods and properties. It references the + object without taking ownership similar to the above + return_value_policy::reference policy. In contrast to that policy, the + function or property’s implicit this argument (called the parent) is + considered to be the the owner of the return value (the child). + pybind11 then couples the lifetime of the parent to the child via a + reference relationship that ensures that the parent cannot be garbage + collected while Python is still using the child. More advanced + variations of this scheme are also possible using combinations of + return_value_policy::reference and the keep_alive call policy */ + reference_internal +}; + +NAMESPACE_BEGIN(detail) + +inline static constexpr int log2(size_t n, int k = 0) { return (n <= 1) ? k : log2(n >> 1, k + 1); } + +// Returns the size as a multiple of sizeof(void *), rounded up. +inline static constexpr size_t size_in_ptrs(size_t s) { return 1 + ((s - 1) >> log2(sizeof(void *))); } + +/** + * The space to allocate for simple layout instance holders (see below) in multiple of the size of + * a pointer (e.g. 2 means 16 bytes on 64-bit architectures). The default is the minimum required + * to holder either a std::unique_ptr or std::shared_ptr (which is almost always + * sizeof(std::shared_ptr<T>)). + */ +constexpr size_t instance_simple_holder_in_ptrs() { + static_assert(sizeof(std::shared_ptr<int>) >= sizeof(std::unique_ptr<int>), + "pybind assumes std::shared_ptrs are at least as big as std::unique_ptrs"); + return size_in_ptrs(sizeof(std::shared_ptr<int>)); +} + +// Forward declarations +struct type_info; +struct value_and_holder; + +/// The 'instance' type which needs to be standard layout (need to be able to use 'offsetof') +struct instance { + PyObject_HEAD + /// Storage for pointers and holder; see simple_layout, below, for a description + union { + void *simple_value_holder[1 + instance_simple_holder_in_ptrs()]; + struct { + void **values_and_holders; + uint8_t *status; + } nonsimple; + }; + /// Weak references (needed for keep alive): + PyObject *weakrefs; + /// If true, the pointer is owned which means we're free to manage it with a holder. + bool owned : 1; + /** + * An instance has two possible value/holder layouts. + * + * Simple layout (when this flag is true), means the `simple_value_holder` is set with a pointer + * and the holder object governing that pointer, i.e. [val1*][holder]. This layout is applied + * whenever there is no python-side multiple inheritance of bound C++ types *and* the type's + * holder will fit in the default space (which is large enough to hold either a std::unique_ptr + * or std::shared_ptr). + * + * Non-simple layout applies when using custom holders that require more space than `shared_ptr` + * (which is typically the size of two pointers), or when multiple inheritance is used on the + * python side. Non-simple layout allocates the required amount of memory to have multiple + * bound C++ classes as parents. Under this layout, `nonsimple.values_and_holders` is set to a + * pointer to allocated space of the required space to hold a a sequence of value pointers and + * holders followed `status`, a set of bit flags (1 byte each), i.e. + * [val1*][holder1][val2*][holder2]...[bb...] where each [block] is rounded up to a multiple of + * `sizeof(void *)`. `nonsimple.holder_constructed` is, for convenience, a pointer to the + * beginning of the [bb...] block (but not independently allocated). + * + * Status bits indicate whether the associated holder is constructed (& + * status_holder_constructed) and whether the value pointer is registered (& + * status_instance_registered) in `registered_instances`. + */ + bool simple_layout : 1; + /// For simple layout, tracks whether the holder has been constructed + bool simple_holder_constructed : 1; + /// For simple layout, tracks whether the instance is registered in `registered_instances` + bool simple_instance_registered : 1; + /// If true, get_internals().patients has an entry for this object + bool has_patients : 1; + + /// Initializes all of the above type/values/holders data (but not the instance values themselves) + void allocate_layout(); + + /// Destroys/deallocates all of the above + void deallocate_layout(); + + /// Returns the value_and_holder wrapper for the given type (or the first, if `find_type` + /// omitted). Returns a default-constructed (with `.inst = nullptr`) object on failure if + /// `throw_if_missing` is false. + value_and_holder get_value_and_holder(const type_info *find_type = nullptr, bool throw_if_missing = true); + + /// Bit values for the non-simple status flags + static constexpr uint8_t status_holder_constructed = 1; + static constexpr uint8_t status_instance_registered = 2; +}; + +static_assert(std::is_standard_layout<instance>::value, "Internal error: `pybind11::detail::instance` is not standard layout!"); + +/// from __cpp_future__ import (convenient aliases from C++14/17) +#if defined(PYBIND11_CPP14) && (!defined(_MSC_VER) || _MSC_VER >= 1910) +using std::enable_if_t; +using std::conditional_t; +using std::remove_cv_t; +using std::remove_reference_t; +#else +template <bool B, typename T = void> using enable_if_t = typename std::enable_if<B, T>::type; +template <bool B, typename T, typename F> using conditional_t = typename std::conditional<B, T, F>::type; +template <typename T> using remove_cv_t = typename std::remove_cv<T>::type; +template <typename T> using remove_reference_t = typename std::remove_reference<T>::type; +#endif + +/// Index sequences +#if defined(PYBIND11_CPP14) +using std::index_sequence; +using std::make_index_sequence; +#else +template<size_t ...> struct index_sequence { }; +template<size_t N, size_t ...S> struct make_index_sequence_impl : make_index_sequence_impl <N - 1, N - 1, S...> { }; +template<size_t ...S> struct make_index_sequence_impl <0, S...> { typedef index_sequence<S...> type; }; +template<size_t N> using make_index_sequence = typename make_index_sequence_impl<N>::type; +#endif + +/// Make an index sequence of the indices of true arguments +template <typename ISeq, size_t, bool...> struct select_indices_impl { using type = ISeq; }; +template <size_t... IPrev, size_t I, bool B, bool... Bs> struct select_indices_impl<index_sequence<IPrev...>, I, B, Bs...> + : select_indices_impl<conditional_t<B, index_sequence<IPrev..., I>, index_sequence<IPrev...>>, I + 1, Bs...> {}; +template <bool... Bs> using select_indices = typename select_indices_impl<index_sequence<>, 0, Bs...>::type; + +/// Backports of std::bool_constant and std::negation to accomodate older compilers +template <bool B> using bool_constant = std::integral_constant<bool, B>; +template <typename T> struct negation : bool_constant<!T::value> { }; + +template <typename...> struct void_t_impl { using type = void; }; +template <typename... Ts> using void_t = typename void_t_impl<Ts...>::type; + +/// Compile-time all/any/none of that check the boolean value of all template types +#ifdef __cpp_fold_expressions +template <class... Ts> using all_of = bool_constant<(Ts::value && ...)>; +template <class... Ts> using any_of = bool_constant<(Ts::value || ...)>; +#elif !defined(_MSC_VER) +template <bool...> struct bools {}; +template <class... Ts> using all_of = std::is_same< + bools<Ts::value..., true>, + bools<true, Ts::value...>>; +template <class... Ts> using any_of = negation<all_of<negation<Ts>...>>; +#else +// MSVC has trouble with the above, but supports std::conjunction, which we can use instead (albeit +// at a slight loss of compilation efficiency). +template <class... Ts> using all_of = std::conjunction<Ts...>; +template <class... Ts> using any_of = std::disjunction<Ts...>; +#endif +template <class... Ts> using none_of = negation<any_of<Ts...>>; + +template <class T, template<class> class... Predicates> using satisfies_all_of = all_of<Predicates<T>...>; +template <class T, template<class> class... Predicates> using satisfies_any_of = any_of<Predicates<T>...>; +template <class T, template<class> class... Predicates> using satisfies_none_of = none_of<Predicates<T>...>; + +/// Strip the class from a method type +template <typename T> struct remove_class { }; +template <typename C, typename R, typename... A> struct remove_class<R (C::*)(A...)> { typedef R type(A...); }; +template <typename C, typename R, typename... A> struct remove_class<R (C::*)(A...) const> { typedef R type(A...); }; + +/// Helper template to strip away type modifiers +template <typename T> struct intrinsic_type { typedef T type; }; +template <typename T> struct intrinsic_type<const T> { typedef typename intrinsic_type<T>::type type; }; +template <typename T> struct intrinsic_type<T*> { typedef typename intrinsic_type<T>::type type; }; +template <typename T> struct intrinsic_type<T&> { typedef typename intrinsic_type<T>::type type; }; +template <typename T> struct intrinsic_type<T&&> { typedef typename intrinsic_type<T>::type type; }; +template <typename T, size_t N> struct intrinsic_type<const T[N]> { typedef typename intrinsic_type<T>::type type; }; +template <typename T, size_t N> struct intrinsic_type<T[N]> { typedef typename intrinsic_type<T>::type type; }; +template <typename T> using intrinsic_t = typename intrinsic_type<T>::type; + +/// Helper type to replace 'void' in some expressions +struct void_type { }; + +/// Helper template which holds a list of types +template <typename...> struct type_list { }; + +/// Compile-time integer sum +#ifdef __cpp_fold_expressions +template <typename... Ts> constexpr size_t constexpr_sum(Ts... ns) { return (0 + ... + size_t{ns}); } +#else +constexpr size_t constexpr_sum() { return 0; } +template <typename T, typename... Ts> +constexpr size_t constexpr_sum(T n, Ts... ns) { return size_t{n} + constexpr_sum(ns...); } +#endif + +NAMESPACE_BEGIN(constexpr_impl) +/// Implementation details for constexpr functions +constexpr int first(int i) { return i; } +template <typename T, typename... Ts> +constexpr int first(int i, T v, Ts... vs) { return v ? i : first(i + 1, vs...); } + +constexpr int last(int /*i*/, int result) { return result; } +template <typename T, typename... Ts> +constexpr int last(int i, int result, T v, Ts... vs) { return last(i + 1, v ? i : result, vs...); } +NAMESPACE_END(constexpr_impl) + +/// Return the index of the first type in Ts which satisfies Predicate<T>. Returns sizeof...(Ts) if +/// none match. +template <template<typename> class Predicate, typename... Ts> +constexpr int constexpr_first() { return constexpr_impl::first(0, Predicate<Ts>::value...); } + +/// Return the index of the last type in Ts which satisfies Predicate<T>, or -1 if none match. +template <template<typename> class Predicate, typename... Ts> +constexpr int constexpr_last() { return constexpr_impl::last(0, -1, Predicate<Ts>::value...); } + +/// Return the Nth element from the parameter pack +template <size_t N, typename T, typename... Ts> +struct pack_element { using type = typename pack_element<N - 1, Ts...>::type; }; +template <typename T, typename... Ts> +struct pack_element<0, T, Ts...> { using type = T; }; + +/// Return the one and only type which matches the predicate, or Default if none match. +/// If more than one type matches the predicate, fail at compile-time. +template <template<typename> class Predicate, typename Default, typename... Ts> +struct exactly_one { + static constexpr auto found = constexpr_sum(Predicate<Ts>::value...); + static_assert(found <= 1, "Found more than one type matching the predicate"); + + static constexpr auto index = found ? constexpr_first<Predicate, Ts...>() : 0; + using type = conditional_t<found, typename pack_element<index, Ts...>::type, Default>; +}; +template <template<typename> class P, typename Default> +struct exactly_one<P, Default> { using type = Default; }; + +template <template<typename> class Predicate, typename Default, typename... Ts> +using exactly_one_t = typename exactly_one<Predicate, Default, Ts...>::type; + +/// Defer the evaluation of type T until types Us are instantiated +template <typename T, typename... /*Us*/> struct deferred_type { using type = T; }; +template <typename T, typename... Us> using deferred_t = typename deferred_type<T, Us...>::type; + +/// Like is_base_of, but requires a strict base (i.e. `is_strict_base_of<T, T>::value == false`, +/// unlike `std::is_base_of`) +template <typename Base, typename Derived> using is_strict_base_of = bool_constant< + std::is_base_of<Base, Derived>::value && !std::is_same<Base, Derived>::value>; + +template <template<typename...> class Base> +struct is_template_base_of_impl { + template <typename... Us> static std::true_type check(Base<Us...> *); + static std::false_type check(...); +}; + +/// Check if a template is the base of a type. For example: +/// `is_template_base_of<Base, T>` is true if `struct T : Base<U> {}` where U can be anything +template <template<typename...> class Base, typename T> +#if !defined(_MSC_VER) +using is_template_base_of = decltype(is_template_base_of_impl<Base>::check((intrinsic_t<T>*)nullptr)); +#else // MSVC2015 has trouble with decltype in template aliases +struct is_template_base_of : decltype(is_template_base_of_impl<Base>::check((intrinsic_t<T>*)nullptr)) { }; +#endif + +/// Check if T is an instantiation of the template `Class`. For example: +/// `is_instantiation<shared_ptr, T>` is true if `T == shared_ptr<U>` where U can be anything. +template <template<typename...> class Class, typename T> +struct is_instantiation : std::false_type { }; +template <template<typename...> class Class, typename... Us> +struct is_instantiation<Class, Class<Us...>> : std::true_type { }; + +/// Check if T is std::shared_ptr<U> where U can be anything +template <typename T> using is_shared_ptr = is_instantiation<std::shared_ptr, T>; + +/// Check if T looks like an input iterator +template <typename T, typename = void> struct is_input_iterator : std::false_type {}; +template <typename T> +struct is_input_iterator<T, void_t<decltype(*std::declval<T &>()), decltype(++std::declval<T &>())>> + : std::true_type {}; + +template <typename T> using is_function_pointer = bool_constant< + std::is_pointer<T>::value && std::is_function<typename std::remove_pointer<T>::type>::value>; + +template <typename F> struct strip_function_object { + using type = typename remove_class<decltype(&F::operator())>::type; +}; + +// Extracts the function signature from a function, function pointer or lambda. +template <typename Function, typename F = remove_reference_t<Function>> +using function_signature_t = conditional_t< + std::is_function<F>::value, + F, + typename conditional_t< + std::is_pointer<F>::value || std::is_member_pointer<F>::value, + std::remove_pointer<F>, + strip_function_object<F> + >::type +>; + +/// Returns true if the type looks like a lambda: that is, isn't a function, pointer or member +/// pointer. Note that this can catch all sorts of other things, too; this is intended to be used +/// in a place where passing a lambda makes sense. +template <typename T> using is_lambda = satisfies_none_of<remove_reference_t<T>, + std::is_function, std::is_pointer, std::is_member_pointer>; + +/// Ignore that a variable is unused in compiler warnings +inline void ignore_unused(const int *) { } + +/// Apply a function over each element of a parameter pack +#ifdef __cpp_fold_expressions +#define PYBIND11_EXPAND_SIDE_EFFECTS(PATTERN) (((PATTERN), void()), ...) +#else +using expand_side_effects = bool[]; +#define PYBIND11_EXPAND_SIDE_EFFECTS(PATTERN) pybind11::detail::expand_side_effects{ ((PATTERN), void(), false)..., false } +#endif + +NAMESPACE_END(detail) + +/// C++ bindings of builtin Python exceptions +class builtin_exception : public std::runtime_error { +public: + using std::runtime_error::runtime_error; + /// Set the error using the Python C API + virtual void set_error() const = 0; +}; + +#define PYBIND11_RUNTIME_EXCEPTION(name, type) \ + class name : public builtin_exception { public: \ + using builtin_exception::builtin_exception; \ + name() : name("") { } \ + void set_error() const override { PyErr_SetString(type, what()); } \ + }; + +PYBIND11_RUNTIME_EXCEPTION(stop_iteration, PyExc_StopIteration) +PYBIND11_RUNTIME_EXCEPTION(index_error, PyExc_IndexError) +PYBIND11_RUNTIME_EXCEPTION(key_error, PyExc_KeyError) +PYBIND11_RUNTIME_EXCEPTION(value_error, PyExc_ValueError) +PYBIND11_RUNTIME_EXCEPTION(type_error, PyExc_TypeError) +PYBIND11_RUNTIME_EXCEPTION(cast_error, PyExc_RuntimeError) /// Thrown when pybind11::cast or handle::call fail due to a type casting error +PYBIND11_RUNTIME_EXCEPTION(reference_cast_error, PyExc_RuntimeError) /// Used internally + +[[noreturn]] PYBIND11_NOINLINE inline void pybind11_fail(const char *reason) { throw std::runtime_error(reason); } +[[noreturn]] PYBIND11_NOINLINE inline void pybind11_fail(const std::string &reason) { throw std::runtime_error(reason); } + +template <typename T, typename SFINAE = void> struct format_descriptor { }; + +NAMESPACE_BEGIN(detail) +// Returns the index of the given type in the type char array below, and in the list in numpy.h +// The order here is: bool; 8 ints ((signed,unsigned)x(8,16,32,64)bits); float,double,long double; +// complex float,double,long double. Note that the long double types only participate when long +// double is actually longer than double (it isn't under MSVC). +// NB: not only the string below but also complex.h and numpy.h rely on this order. +template <typename T, typename SFINAE = void> struct is_fmt_numeric { static constexpr bool value = false; }; +template <typename T> struct is_fmt_numeric<T, enable_if_t<std::is_arithmetic<T>::value>> { + static constexpr bool value = true; + static constexpr int index = std::is_same<T, bool>::value ? 0 : 1 + ( + std::is_integral<T>::value ? detail::log2(sizeof(T))*2 + std::is_unsigned<T>::value : 8 + ( + std::is_same<T, double>::value ? 1 : std::is_same<T, long double>::value ? 2 : 0)); +}; +NAMESPACE_END(detail) + +template <typename T> struct format_descriptor<T, detail::enable_if_t<std::is_arithmetic<T>::value>> { + static constexpr const char c = "?bBhHiIqQfdg"[detail::is_fmt_numeric<T>::index]; + static constexpr const char value[2] = { c, '\0' }; + static std::string format() { return std::string(1, c); } +}; + +template <typename T> constexpr const char format_descriptor< + T, detail::enable_if_t<std::is_arithmetic<T>::value>>::value[2]; + +/// RAII wrapper that temporarily clears any Python error state +struct error_scope { + PyObject *type, *value, *trace; + error_scope() { PyErr_Fetch(&type, &value, &trace); } + ~error_scope() { PyErr_Restore(type, value, trace); } +}; + +/// Dummy destructor wrapper that can be used to expose classes with a private destructor +struct nodelete { template <typename T> void operator()(T*) { } }; + +// overload_cast requires variable templates: C++14 +#if defined(PYBIND11_CPP14) +#define PYBIND11_OVERLOAD_CAST 1 + +NAMESPACE_BEGIN(detail) +template <typename... Args> +struct overload_cast_impl { + constexpr overload_cast_impl() {} // MSVC 2015 needs this + + template <typename Return> + constexpr auto operator()(Return (*pf)(Args...)) const noexcept + -> decltype(pf) { return pf; } + + template <typename Return, typename Class> + constexpr auto operator()(Return (Class::*pmf)(Args...), std::false_type = {}) const noexcept + -> decltype(pmf) { return pmf; } + + template <typename Return, typename Class> + constexpr auto operator()(Return (Class::*pmf)(Args...) const, std::true_type) const noexcept + -> decltype(pmf) { return pmf; } +}; +NAMESPACE_END(detail) + +/// Syntax sugar for resolving overloaded function pointers: +/// - regular: static_cast<Return (Class::*)(Arg0, Arg1, Arg2)>(&Class::func) +/// - sweet: overload_cast<Arg0, Arg1, Arg2>(&Class::func) +template <typename... Args> +static constexpr detail::overload_cast_impl<Args...> overload_cast = {}; +// MSVC 2015 only accepts this particular initialization syntax for this variable template. + +/// Const member function selector for overload_cast +/// - regular: static_cast<Return (Class::*)(Arg) const>(&Class::func) +/// - sweet: overload_cast<Arg>(&Class::func, const_) +static constexpr auto const_ = std::true_type{}; + +#else // no overload_cast: providing something that static_assert-fails: +template <typename... Args> struct overload_cast { + static_assert(detail::deferred_t<std::false_type, Args...>::value, + "pybind11::overload_cast<...> requires compiling in C++14 mode"); +}; +#endif // overload_cast + +NAMESPACE_BEGIN(detail) + +// Adaptor for converting arbitrary container arguments into a vector; implicitly convertible from +// any standard container (or C-style array) supporting std::begin/std::end, any singleton +// arithmetic type (if T is arithmetic), or explicitly constructible from an iterator pair. +template <typename T> +class any_container { + std::vector<T> v; +public: + any_container() = default; + + // Can construct from a pair of iterators + template <typename It, typename = enable_if_t<is_input_iterator<It>::value>> + any_container(It first, It last) : v(first, last) { } + + // Implicit conversion constructor from any arbitrary container type with values convertible to T + template <typename Container, typename = enable_if_t<std::is_convertible<decltype(*std::begin(std::declval<const Container &>())), T>::value>> + any_container(const Container &c) : any_container(std::begin(c), std::end(c)) { } + + // initializer_list's aren't deducible, so don't get matched by the above template; we need this + // to explicitly allow implicit conversion from one: + template <typename TIn, typename = enable_if_t<std::is_convertible<TIn, T>::value>> + any_container(const std::initializer_list<TIn> &c) : any_container(c.begin(), c.end()) { } + + // Avoid copying if given an rvalue vector of the correct type. + any_container(std::vector<T> &&v) : v(std::move(v)) { } + + // Moves the vector out of an rvalue any_container + operator std::vector<T> &&() && { return std::move(v); } + + // Dereferencing obtains a reference to the underlying vector + std::vector<T> &operator*() { return v; } + const std::vector<T> &operator*() const { return v; } + + // -> lets you call methods on the underlying vector + std::vector<T> *operator->() { return &v; } + const std::vector<T> *operator->() const { return &v; } +}; + +NAMESPACE_END(detail) + + + +NAMESPACE_END(PYBIND11_NAMESPACE) diff --git a/ext/pybind11/include/pybind11/descr.h b/ext/pybind11/include/pybind11/detail/descr.h index 2c3fb3d13..e3bf2ba97 100644 --- a/ext/pybind11/include/pybind11/descr.h +++ b/ext/pybind11/include/pybind11/detail/descr.h @@ -1,5 +1,5 @@ /* - pybind11/descr.h: Helper type for concatenating type signatures + pybind11/detail/descr.h: Helper type for concatenating type signatures either at runtime (C++11) or compile time (C++14) Copyright (c) 2016 Wenzel Jakob <wenzel.jakob@epfl.ch> @@ -12,10 +12,12 @@ #include "common.h" -NAMESPACE_BEGIN(pybind11) +NAMESPACE_BEGIN(PYBIND11_NAMESPACE) NAMESPACE_BEGIN(detail) -#if defined(PYBIND11_CPP14) /* Concatenate type signatures at compile time using C++14 */ +/* Concatenate type signatures at compile time using C++14 */ +#if defined(PYBIND11_CPP14) && !defined(_MSC_VER) +#define PYBIND11_CONSTEXPR_DESCR template <size_t Size1, size_t Size2> class descr { template <size_t Size1_, size_t Size2_> friend class descr; @@ -113,20 +115,20 @@ public: memcpy(m_types, types, nTypes * sizeof(const std::type_info *)); } - PYBIND11_NOINLINE descr friend operator+(descr &&d1, descr &&d2) { + PYBIND11_NOINLINE descr operator+(descr &&d2) && { descr r; - size_t nChars1 = len(d1.m_text), nTypes1 = len(d1.m_types); + size_t nChars1 = len(m_text), nTypes1 = len(m_types); size_t nChars2 = len(d2.m_text), nTypes2 = len(d2.m_types); r.m_text = new char[nChars1 + nChars2 - 1]; r.m_types = new const std::type_info *[nTypes1 + nTypes2 - 1]; - memcpy(r.m_text, d1.m_text, (nChars1-1) * sizeof(char)); + memcpy(r.m_text, m_text, (nChars1-1) * sizeof(char)); memcpy(r.m_text + nChars1 - 1, d2.m_text, nChars2 * sizeof(char)); - memcpy(r.m_types, d1.m_types, (nTypes1-1) * sizeof(std::type_info *)); + memcpy(r.m_types, m_types, (nTypes1-1) * sizeof(std::type_info *)); memcpy(r.m_types + nTypes1 - 1, d2.m_types, nTypes2 * sizeof(std::type_info *)); - delete[] d1.m_text; delete[] d1.m_types; + delete[] m_text; delete[] m_types; delete[] d2.m_text; delete[] d2.m_types; return r; @@ -180,4 +182,4 @@ PYBIND11_NOINLINE inline descr type_descr(descr&& d) { return _("{") + std::move #endif NAMESPACE_END(detail) -NAMESPACE_END(pybind11) +NAMESPACE_END(PYBIND11_NAMESPACE) diff --git a/ext/pybind11/include/pybind11/detail/init.h b/ext/pybind11/include/pybind11/detail/init.h new file mode 100644 index 000000000..c3594a190 --- /dev/null +++ b/ext/pybind11/include/pybind11/detail/init.h @@ -0,0 +1,325 @@ +/* + pybind11/detail/init.h: init factory function implementation and support code. + + Copyright (c) 2017 Jason Rhinelander <jason@imaginary.ca> + + All rights reserved. Use of this source code is governed by a + BSD-style license that can be found in the LICENSE file. +*/ + +#pragma once + +#include "class.h" + +NAMESPACE_BEGIN(PYBIND11_NAMESPACE) +NAMESPACE_BEGIN(detail) + +template <> +class type_caster<value_and_holder> { +public: + bool load(handle h, bool) { + value = reinterpret_cast<value_and_holder *>(h.ptr()); + return true; + } + + template <typename> using cast_op_type = value_and_holder &; + operator value_and_holder &() { return *value; } + static PYBIND11_DESCR name() { return type_descr(_<value_and_holder>()); } + +private: + value_and_holder *value = nullptr; +}; + +NAMESPACE_BEGIN(initimpl) + +inline void no_nullptr(void *ptr) { + if (!ptr) throw type_error("pybind11::init(): factory function returned nullptr"); +} + +// Implementing functions for all forms of py::init<...> and py::init(...) +template <typename Class> using Cpp = typename Class::type; +template <typename Class> using Alias = typename Class::type_alias; +template <typename Class> using Holder = typename Class::holder_type; + +template <typename Class> using is_alias_constructible = std::is_constructible<Alias<Class>, Cpp<Class> &&>; + +// Takes a Cpp pointer and returns true if it actually is a polymorphic Alias instance. +template <typename Class, enable_if_t<Class::has_alias, int> = 0> +bool is_alias(Cpp<Class> *ptr) { + return dynamic_cast<Alias<Class> *>(ptr) != nullptr; +} +// Failing fallback version of the above for a no-alias class (always returns false) +template <typename /*Class*/> +constexpr bool is_alias(void *) { return false; } + +// Attempts to constructs an alias using a `Alias(Cpp &&)` constructor. This allows types with +// an alias to provide only a single Cpp factory function as long as the Alias can be +// constructed from an rvalue reference of the base Cpp type. This means that Alias classes +// can, when appropriate, simply define a `Alias(Cpp &&)` constructor rather than needing to +// inherit all the base class constructors. +template <typename Class> +void construct_alias_from_cpp(std::true_type /*is_alias_constructible*/, + value_and_holder &v_h, Cpp<Class> &&base) { + v_h.value_ptr() = new Alias<Class>(std::move(base)); +} +template <typename Class> +[[noreturn]] void construct_alias_from_cpp(std::false_type /*!is_alias_constructible*/, + value_and_holder &, Cpp<Class> &&) { + throw type_error("pybind11::init(): unable to convert returned instance to required " + "alias class: no `Alias<Class>(Class &&)` constructor available"); +} + +// Error-generating fallback for factories that don't match one of the below construction +// mechanisms. +template <typename Class> +void construct(...) { + static_assert(!std::is_same<Class, Class>::value /* always false */, + "pybind11::init(): init function must return a compatible pointer, " + "holder, or value"); +} + +// Pointer return v1: the factory function returns a class pointer for a registered class. +// If we don't need an alias (because this class doesn't have one, or because the final type is +// inherited on the Python side) we can simply take over ownership. Otherwise we need to try to +// construct an Alias from the returned base instance. +template <typename Class> +void construct(value_and_holder &v_h, Cpp<Class> *ptr, bool need_alias) { + no_nullptr(ptr); + if (Class::has_alias && need_alias && !is_alias<Class>(ptr)) { + // We're going to try to construct an alias by moving the cpp type. Whether or not + // that succeeds, we still need to destroy the original cpp pointer (either the + // moved away leftover, if the alias construction works, or the value itself if we + // throw an error), but we can't just call `delete ptr`: it might have a special + // deleter, or might be shared_from_this. So we construct a holder around it as if + // it was a normal instance, then steal the holder away into a local variable; thus + // the holder and destruction happens when we leave the C++ scope, and the holder + // class gets to handle the destruction however it likes. + v_h.value_ptr() = ptr; + v_h.set_instance_registered(true); // To prevent init_instance from registering it + v_h.type->init_instance(v_h.inst, nullptr); // Set up the holder + Holder<Class> temp_holder(std::move(v_h.holder<Holder<Class>>())); // Steal the holder + v_h.type->dealloc(v_h); // Destroys the moved-out holder remains, resets value ptr to null + v_h.set_instance_registered(false); + + construct_alias_from_cpp<Class>(is_alias_constructible<Class>{}, v_h, std::move(*ptr)); + } else { + // Otherwise the type isn't inherited, so we don't need an Alias + v_h.value_ptr() = ptr; + } +} + +// Pointer return v2: a factory that always returns an alias instance ptr. We simply take over +// ownership of the pointer. +template <typename Class, enable_if_t<Class::has_alias, int> = 0> +void construct(value_and_holder &v_h, Alias<Class> *alias_ptr, bool) { + no_nullptr(alias_ptr); + v_h.value_ptr() = static_cast<Cpp<Class> *>(alias_ptr); +} + +// Holder return: copy its pointer, and move or copy the returned holder into the new instance's +// holder. This also handles types like std::shared_ptr<T> and std::unique_ptr<T> where T is a +// derived type (through those holder's implicit conversion from derived class holder constructors). +template <typename Class> +void construct(value_and_holder &v_h, Holder<Class> holder, bool need_alias) { + auto *ptr = holder_helper<Holder<Class>>::get(holder); + // If we need an alias, check that the held pointer is actually an alias instance + if (Class::has_alias && need_alias && !is_alias<Class>(ptr)) + throw type_error("pybind11::init(): construction failed: returned holder-wrapped instance " + "is not an alias instance"); + + v_h.value_ptr() = ptr; + v_h.type->init_instance(v_h.inst, &holder); +} + +// return-by-value version 1: returning a cpp class by value. If the class has an alias and an +// alias is required the alias must have an `Alias(Cpp &&)` constructor so that we can construct +// the alias from the base when needed (i.e. because of Python-side inheritance). When we don't +// need it, we simply move-construct the cpp value into a new instance. +template <typename Class> +void construct(value_and_holder &v_h, Cpp<Class> &&result, bool need_alias) { + static_assert(std::is_move_constructible<Cpp<Class>>::value, + "pybind11::init() return-by-value factory function requires a movable class"); + if (Class::has_alias && need_alias) + construct_alias_from_cpp<Class>(is_alias_constructible<Class>{}, v_h, std::move(result)); + else + v_h.value_ptr() = new Cpp<Class>(std::move(result)); +} + +// return-by-value version 2: returning a value of the alias type itself. We move-construct an +// Alias instance (even if no the python-side inheritance is involved). The is intended for +// cases where Alias initialization is always desired. +template <typename Class> +void construct(value_and_holder &v_h, Alias<Class> &&result, bool) { + static_assert(std::is_move_constructible<Alias<Class>>::value, + "pybind11::init() return-by-alias-value factory function requires a movable alias class"); + v_h.value_ptr() = new Alias<Class>(std::move(result)); +} + +// Implementing class for py::init<...>() +template <typename... Args> +struct constructor { + template <typename Class, typename... Extra, enable_if_t<!Class::has_alias, int> = 0> + static void execute(Class &cl, const Extra&... extra) { + cl.def("__init__", [](value_and_holder &v_h, Args... args) { + v_h.value_ptr() = new Cpp<Class>{std::forward<Args>(args)...}; + }, is_new_style_constructor(), extra...); + } + + template <typename Class, typename... Extra, + enable_if_t<Class::has_alias && + std::is_constructible<Cpp<Class>, Args...>::value, int> = 0> + static void execute(Class &cl, const Extra&... extra) { + cl.def("__init__", [](value_and_holder &v_h, Args... args) { + if (Py_TYPE(v_h.inst) == v_h.type->type) + v_h.value_ptr() = new Cpp<Class>{std::forward<Args>(args)...}; + else + v_h.value_ptr() = new Alias<Class>{std::forward<Args>(args)...}; + }, is_new_style_constructor(), extra...); + } + + template <typename Class, typename... Extra, + enable_if_t<Class::has_alias && + !std::is_constructible<Cpp<Class>, Args...>::value, int> = 0> + static void execute(Class &cl, const Extra&... extra) { + cl.def("__init__", [](value_and_holder &v_h, Args... args) { + v_h.value_ptr() = new Alias<Class>{std::forward<Args>(args)...}; + }, is_new_style_constructor(), extra...); + } +}; + +// Implementing class for py::init_alias<...>() +template <typename... Args> struct alias_constructor { + template <typename Class, typename... Extra, + enable_if_t<Class::has_alias && std::is_constructible<Alias<Class>, Args...>::value, int> = 0> + static void execute(Class &cl, const Extra&... extra) { + cl.def("__init__", [](value_and_holder &v_h, Args... args) { + v_h.value_ptr() = new Alias<Class>{std::forward<Args>(args)...}; + }, is_new_style_constructor(), extra...); + } +}; + +// Implementation class for py::init(Func) and py::init(Func, AliasFunc) +template <typename CFunc, typename AFunc = void_type (*)(), + typename = function_signature_t<CFunc>, typename = function_signature_t<AFunc>> +struct factory; + +// Specialization for py::init(Func) +template <typename Func, typename Return, typename... Args> +struct factory<Func, void_type (*)(), Return(Args...)> { + remove_reference_t<Func> class_factory; + + factory(Func &&f) : class_factory(std::forward<Func>(f)) { } + + // The given class either has no alias or has no separate alias factory; + // this always constructs the class itself. If the class is registered with an alias + // type and an alias instance is needed (i.e. because the final type is a Python class + // inheriting from the C++ type) the returned value needs to either already be an alias + // instance, or the alias needs to be constructible from a `Class &&` argument. + template <typename Class, typename... Extra> + void execute(Class &cl, const Extra &...extra) && { + #if defined(PYBIND11_CPP14) + cl.def("__init__", [func = std::move(class_factory)] + #else + auto &func = class_factory; + cl.def("__init__", [func] + #endif + (value_and_holder &v_h, Args... args) { + construct<Class>(v_h, func(std::forward<Args>(args)...), + Py_TYPE(v_h.inst) != v_h.type->type); + }, is_new_style_constructor(), extra...); + } +}; + +// Specialization for py::init(Func, AliasFunc) +template <typename CFunc, typename AFunc, + typename CReturn, typename... CArgs, typename AReturn, typename... AArgs> +struct factory<CFunc, AFunc, CReturn(CArgs...), AReturn(AArgs...)> { + static_assert(sizeof...(CArgs) == sizeof...(AArgs), + "pybind11::init(class_factory, alias_factory): class and alias factories " + "must have identical argument signatures"); + static_assert(all_of<std::is_same<CArgs, AArgs>...>::value, + "pybind11::init(class_factory, alias_factory): class and alias factories " + "must have identical argument signatures"); + + remove_reference_t<CFunc> class_factory; + remove_reference_t<AFunc> alias_factory; + + factory(CFunc &&c, AFunc &&a) + : class_factory(std::forward<CFunc>(c)), alias_factory(std::forward<AFunc>(a)) { } + + // The class factory is called when the `self` type passed to `__init__` is the direct + // class (i.e. not inherited), the alias factory when `self` is a Python-side subtype. + template <typename Class, typename... Extra> + void execute(Class &cl, const Extra&... extra) && { + static_assert(Class::has_alias, "The two-argument version of `py::init()` can " + "only be used if the class has an alias"); + #if defined(PYBIND11_CPP14) + cl.def("__init__", [class_func = std::move(class_factory), alias_func = std::move(alias_factory)] + #else + auto &class_func = class_factory; + auto &alias_func = alias_factory; + cl.def("__init__", [class_func, alias_func] + #endif + (value_and_holder &v_h, CArgs... args) { + if (Py_TYPE(v_h.inst) == v_h.type->type) + // If the instance type equals the registered type we don't have inheritance, so + // don't need the alias and can construct using the class function: + construct<Class>(v_h, class_func(std::forward<CArgs>(args)...), false); + else + construct<Class>(v_h, alias_func(std::forward<CArgs>(args)...), true); + }, is_new_style_constructor(), extra...); + } +}; + +/// Set just the C++ state. Same as `__init__`. +template <typename Class, typename T> +void setstate(value_and_holder &v_h, T &&result, bool need_alias) { + construct<Class>(v_h, std::forward<T>(result), need_alias); +} + +/// Set both the C++ and Python states +template <typename Class, typename T, typename O, + enable_if_t<std::is_convertible<O, handle>::value, int> = 0> +void setstate(value_and_holder &v_h, std::pair<T, O> &&result, bool need_alias) { + construct<Class>(v_h, std::move(result.first), need_alias); + setattr((PyObject *) v_h.inst, "__dict__", result.second); +} + +/// Implementation for py::pickle(GetState, SetState) +template <typename Get, typename Set, + typename = function_signature_t<Get>, typename = function_signature_t<Set>> +struct pickle_factory; + +template <typename Get, typename Set, + typename RetState, typename Self, typename NewInstance, typename ArgState> +struct pickle_factory<Get, Set, RetState(Self), NewInstance(ArgState)> { + static_assert(std::is_same<intrinsic_t<RetState>, intrinsic_t<ArgState>>::value, + "The type returned by `__getstate__` must be the same " + "as the argument accepted by `__setstate__`"); + + remove_reference_t<Get> get; + remove_reference_t<Set> set; + + pickle_factory(Get get, Set set) + : get(std::forward<Get>(get)), set(std::forward<Set>(set)) { } + + template <typename Class, typename... Extra> + void execute(Class &cl, const Extra &...extra) && { + cl.def("__getstate__", std::move(get)); + +#if defined(PYBIND11_CPP14) + cl.def("__setstate__", [func = std::move(set)] +#else + auto &func = set; + cl.def("__setstate__", [func] +#endif + (value_and_holder &v_h, ArgState state) { + setstate<Class>(v_h, func(std::forward<ArgState>(state)), + Py_TYPE(v_h.inst) != v_h.type->type); + }, is_new_style_constructor(), extra...); + } +}; + +NAMESPACE_END(initimpl) +NAMESPACE_END(detail) +NAMESPACE_END(pybind11) diff --git a/ext/pybind11/include/pybind11/detail/internals.h b/ext/pybind11/include/pybind11/detail/internals.h new file mode 100644 index 000000000..213cbaeb2 --- /dev/null +++ b/ext/pybind11/include/pybind11/detail/internals.h @@ -0,0 +1,247 @@ +/* + pybind11/detail/internals.h: Internal data structure and related functions + + Copyright (c) 2017 Wenzel Jakob <wenzel.jakob@epfl.ch> + + All rights reserved. Use of this source code is governed by a + BSD-style license that can be found in the LICENSE file. +*/ + +#pragma once + +#include "../pytypes.h" + +NAMESPACE_BEGIN(PYBIND11_NAMESPACE) +NAMESPACE_BEGIN(detail) +// Forward declarations +inline PyTypeObject *make_static_property_type(); +inline PyTypeObject *make_default_metaclass(); +inline PyObject *make_object_base_type(PyTypeObject *metaclass); + +// Python loads modules by default with dlopen with the RTLD_LOCAL flag; under libc++ and possibly +// other STLs, this means `typeid(A)` from one module won't equal `typeid(A)` from another module +// even when `A` is the same, non-hidden-visibility type (e.g. from a common include). Under +// libstdc++, this doesn't happen: equality and the type_index hash are based on the type name, +// which works. If not under a known-good stl, provide our own name-based hash and equality +// functions that use the type name. +#if defined(__GLIBCXX__) +inline bool same_type(const std::type_info &lhs, const std::type_info &rhs) { return lhs == rhs; } +using type_hash = std::hash<std::type_index>; +using type_equal_to = std::equal_to<std::type_index>; +#else +inline bool same_type(const std::type_info &lhs, const std::type_info &rhs) { + return lhs.name() == rhs.name() || std::strcmp(lhs.name(), rhs.name()) == 0; +} + +struct type_hash { + size_t operator()(const std::type_index &t) const { + size_t hash = 5381; + const char *ptr = t.name(); + while (auto c = static_cast<unsigned char>(*ptr++)) + hash = (hash * 33) ^ c; + return hash; + } +}; + +struct type_equal_to { + bool operator()(const std::type_index &lhs, const std::type_index &rhs) const { + return lhs.name() == rhs.name() || std::strcmp(lhs.name(), rhs.name()) == 0; + } +}; +#endif + +template <typename value_type> +using type_map = std::unordered_map<std::type_index, value_type, type_hash, type_equal_to>; + +struct overload_hash { + inline size_t operator()(const std::pair<const PyObject *, const char *>& v) const { + size_t value = std::hash<const void *>()(v.first); + value ^= std::hash<const void *>()(v.second) + 0x9e3779b9 + (value<<6) + (value>>2); + return value; + } +}; + +/// Internal data structure used to track registered instances and types. +/// Whenever binary incompatible changes are made to this structure, +/// `PYBIND11_INTERNALS_VERSION` must be incremented. +struct internals { + type_map<type_info *> registered_types_cpp; // std::type_index -> pybind11's type information + std::unordered_map<PyTypeObject *, std::vector<type_info *>> registered_types_py; // PyTypeObject* -> base type_info(s) + std::unordered_multimap<const void *, instance*> registered_instances; // void * -> instance* + std::unordered_set<std::pair<const PyObject *, const char *>, overload_hash> inactive_overload_cache; + type_map<std::vector<bool (*)(PyObject *, void *&)>> direct_conversions; + std::unordered_map<const PyObject *, std::vector<PyObject *>> patients; + std::forward_list<void (*) (std::exception_ptr)> registered_exception_translators; + std::unordered_map<std::string, void *> shared_data; // Custom data to be shared across extensions + std::vector<PyObject *> loader_patient_stack; // Used by `loader_life_support` + std::forward_list<std::string> static_strings; // Stores the std::strings backing detail::c_str() + PyTypeObject *static_property_type; + PyTypeObject *default_metaclass; + PyObject *instance_base; +#if defined(WITH_THREAD) + decltype(PyThread_create_key()) tstate = 0; // Usually an int but a long on Cygwin64 with Python 3.x + PyInterpreterState *istate = nullptr; +#endif +}; + +/// Additional type information which does not fit into the PyTypeObject. +/// Changes to this struct also require bumping `PYBIND11_INTERNALS_VERSION`. +struct type_info { + PyTypeObject *type; + const std::type_info *cpptype; + size_t type_size, holder_size_in_ptrs; + void *(*operator_new)(size_t); + void (*init_instance)(instance *, const void *); + void (*dealloc)(value_and_holder &v_h); + std::vector<PyObject *(*)(PyObject *, PyTypeObject *)> implicit_conversions; + std::vector<std::pair<const std::type_info *, void *(*)(void *)>> implicit_casts; + std::vector<bool (*)(PyObject *, void *&)> *direct_conversions; + buffer_info *(*get_buffer)(PyObject *, void *) = nullptr; + void *get_buffer_data = nullptr; + void *(*module_local_load)(PyObject *, const type_info *) = nullptr; + /* A simple type never occurs as a (direct or indirect) parent + * of a class that makes use of multiple inheritance */ + bool simple_type : 1; + /* True if there is no multiple inheritance in this type's inheritance tree */ + bool simple_ancestors : 1; + /* for base vs derived holder_type checks */ + bool default_holder : 1; + /* true if this is a type registered with py::module_local */ + bool module_local : 1; +}; + +/// Tracks the `internals` and `type_info` ABI version independent of the main library version +#define PYBIND11_INTERNALS_VERSION 1 + +#if defined(WITH_THREAD) +# define PYBIND11_INTERNALS_KIND "" +#else +# define PYBIND11_INTERNALS_KIND "_without_thread" +#endif + +#define PYBIND11_INTERNALS_ID "__pybind11_internals_v" \ + PYBIND11_TOSTRING(PYBIND11_INTERNALS_VERSION) PYBIND11_INTERNALS_KIND "__" + +#define PYBIND11_MODULE_LOCAL_ID "__pybind11_module_local_v" \ + PYBIND11_TOSTRING(PYBIND11_INTERNALS_VERSION) PYBIND11_INTERNALS_KIND "__" + +/// Each module locally stores a pointer to the `internals` data. The data +/// itself is shared among modules with the same `PYBIND11_INTERNALS_ID`. +inline internals *&get_internals_ptr() { + static internals *internals_ptr = nullptr; + return internals_ptr; +} + +/// Return a reference to the current `internals` data +PYBIND11_NOINLINE inline internals &get_internals() { + auto *&internals_ptr = get_internals_ptr(); + if (internals_ptr) + return *internals_ptr; + + constexpr auto *id = PYBIND11_INTERNALS_ID; + auto builtins = handle(PyEval_GetBuiltins()); + if (builtins.contains(id) && isinstance<capsule>(builtins[id])) { + internals_ptr = *static_cast<internals **>(capsule(builtins[id])); + + // We loaded builtins through python's builtins, which means that our `error_already_set` + // and `builtin_exception` may be different local classes than the ones set up in the + // initial exception translator, below, so add another for our local exception classes. + // + // libstdc++ doesn't require this (types there are identified only by name) +#if !defined(__GLIBCXX__) + internals_ptr->registered_exception_translators.push_front( + [](std::exception_ptr p) -> void { + try { + if (p) std::rethrow_exception(p); + } catch (error_already_set &e) { e.restore(); return; + } catch (const builtin_exception &e) { e.set_error(); return; + } + } + ); +#endif + } else { + internals_ptr = new internals(); +#if defined(WITH_THREAD) + PyEval_InitThreads(); + PyThreadState *tstate = PyThreadState_Get(); + internals_ptr->tstate = PyThread_create_key(); + PyThread_set_key_value(internals_ptr->tstate, tstate); + internals_ptr->istate = tstate->interp; +#endif + builtins[id] = capsule(&internals_ptr); + internals_ptr->registered_exception_translators.push_front( + [](std::exception_ptr p) -> void { + try { + if (p) std::rethrow_exception(p); + } catch (error_already_set &e) { e.restore(); return; + } catch (const builtin_exception &e) { e.set_error(); return; + } catch (const std::bad_alloc &e) { PyErr_SetString(PyExc_MemoryError, e.what()); return; + } catch (const std::domain_error &e) { PyErr_SetString(PyExc_ValueError, e.what()); return; + } catch (const std::invalid_argument &e) { PyErr_SetString(PyExc_ValueError, e.what()); return; + } catch (const std::length_error &e) { PyErr_SetString(PyExc_ValueError, e.what()); return; + } catch (const std::out_of_range &e) { PyErr_SetString(PyExc_IndexError, e.what()); return; + } catch (const std::range_error &e) { PyErr_SetString(PyExc_ValueError, e.what()); return; + } catch (const std::exception &e) { PyErr_SetString(PyExc_RuntimeError, e.what()); return; + } catch (...) { + PyErr_SetString(PyExc_RuntimeError, "Caught an unknown exception!"); + return; + } + } + ); + internals_ptr->static_property_type = make_static_property_type(); + internals_ptr->default_metaclass = make_default_metaclass(); + internals_ptr->instance_base = make_object_base_type(internals_ptr->default_metaclass); + } + return *internals_ptr; +} + +/// Works like `internals.registered_types_cpp`, but for module-local registered types: +inline type_map<type_info *> ®istered_local_types_cpp() { + static type_map<type_info *> locals{}; + return locals; +} + +/// Constructs a std::string with the given arguments, stores it in `internals`, and returns its +/// `c_str()`. Such strings objects have a long storage duration -- the internal strings are only +/// cleared when the program exits or after interpreter shutdown (when embedding), and so are +/// suitable for c-style strings needed by Python internals (such as PyTypeObject's tp_name). +template <typename... Args> +const char *c_str(Args &&...args) { + auto &strings = get_internals().static_strings; + strings.emplace_front(std::forward<Args>(args)...); + return strings.front().c_str(); +} + +NAMESPACE_END(detail) + +/// Returns a named pointer that is shared among all extension modules (using the same +/// pybind11 version) running in the current interpreter. Names starting with underscores +/// are reserved for internal usage. Returns `nullptr` if no matching entry was found. +inline PYBIND11_NOINLINE void *get_shared_data(const std::string &name) { + auto &internals = detail::get_internals(); + auto it = internals.shared_data.find(name); + return it != internals.shared_data.end() ? it->second : nullptr; +} + +/// Set the shared data that can be later recovered by `get_shared_data()`. +inline PYBIND11_NOINLINE void *set_shared_data(const std::string &name, void *data) { + detail::get_internals().shared_data[name] = data; + return data; +} + +/// Returns a typed reference to a shared data entry (by using `get_shared_data()`) if +/// such entry exists. Otherwise, a new object of default-constructible type `T` is +/// added to the shared data under the given name and a reference to it is returned. +template<typename T> +T &get_or_create_shared_data(const std::string &name) { + auto &internals = detail::get_internals(); + auto it = internals.shared_data.find(name); + T *ptr = (T *) (it != internals.shared_data.end() ? it->second : nullptr); + if (!ptr) { + ptr = new T(); + internals.shared_data[name] = ptr; + } + return *ptr; +} + +NAMESPACE_END(PYBIND11_NAMESPACE) diff --git a/ext/pybind11/include/pybind11/typeid.h b/ext/pybind11/include/pybind11/detail/typeid.h index c903fb14c..6f36aab75 100644 --- a/ext/pybind11/include/pybind11/typeid.h +++ b/ext/pybind11/include/pybind11/detail/typeid.h @@ -1,5 +1,5 @@ /* - pybind11/typeid.h: Compiler-independent access to type identifiers + pybind11/detail/typeid.h: Compiler-independent access to type identifiers Copyright (c) 2016 Wenzel Jakob <wenzel.jakob@epfl.ch> @@ -16,7 +16,7 @@ #include <cxxabi.h> #endif -NAMESPACE_BEGIN(pybind11) +NAMESPACE_BEGIN(PYBIND11_NAMESPACE) NAMESPACE_BEGIN(detail) /// Erase all occurrences of a substring inline void erase_all(std::string &string, const std::string &search) { @@ -50,4 +50,4 @@ template <typename T> static std::string type_id() { return name; } -NAMESPACE_END(pybind11) +NAMESPACE_END(PYBIND11_NAMESPACE) diff --git a/ext/pybind11/include/pybind11/eigen.h b/ext/pybind11/include/pybind11/eigen.h index 6abe8c48f..a702bf39e 100644 --- a/ext/pybind11/include/pybind11/eigen.h +++ b/ext/pybind11/include/pybind11/eigen.h @@ -35,7 +35,7 @@ // of matrices seems highly undesirable. static_assert(EIGEN_VERSION_AT_LEAST(3,2,7), "Eigen support in pybind11 requires Eigen >= 3.2.7"); -NAMESPACE_BEGIN(pybind11) +NAMESPACE_BEGIN(PYBIND11_NAMESPACE) // Provide a convenience alias for easier pass-by-ref usage with fully dynamic strides: using EigenDStride = Eigen::Stride<Eigen::Dynamic, Eigen::Dynamic>; @@ -68,16 +68,22 @@ template <typename T> using is_eigen_other = all_of< template <bool EigenRowMajor> struct EigenConformable { bool conformable = false; EigenIndex rows = 0, cols = 0; - EigenDStride stride{0, 0}; + EigenDStride stride{0, 0}; // Only valid if negativestrides is false! + bool negativestrides = false; // If true, do not use stride! EigenConformable(bool fits = false) : conformable{fits} {} // Matrix type: EigenConformable(EigenIndex r, EigenIndex c, EigenIndex rstride, EigenIndex cstride) : - conformable{true}, rows{r}, cols{c}, - stride(EigenRowMajor ? rstride : cstride /* outer stride */, - EigenRowMajor ? cstride : rstride /* inner stride */) - {} + conformable{true}, rows{r}, cols{c} { + // TODO: when Eigen bug #747 is fixed, remove the tests for non-negativity. http://eigen.tuxfamily.org/bz/show_bug.cgi?id=747 + if (rstride < 0 || cstride < 0) { + negativestrides = true; + } else { + stride = {EigenRowMajor ? rstride : cstride /* outer stride */, + EigenRowMajor ? cstride : rstride /* inner stride */ }; + } + } // Vector type: EigenConformable(EigenIndex r, EigenIndex c, EigenIndex stride) : EigenConformable(r, c, r == 1 ? c*stride : stride, c == 1 ? r : r*stride) {} @@ -86,6 +92,7 @@ template <bool EigenRowMajor> struct EigenConformable { // To have compatible strides, we need (on both dimensions) one of fully dynamic strides, // matching strides, or a dimension size of 1 (in which case the stride value is irrelevant) return + !negativestrides && (props::inner_stride == Eigen::Dynamic || props::inner_stride == stride.inner() || (EigenRowMajor ? cols : rows) == 1) && (props::outer_stride == Eigen::Dynamic || props::outer_stride == stride.outer() || @@ -138,8 +145,8 @@ template <typename Type_> struct EigenProps { EigenIndex np_rows = a.shape(0), np_cols = a.shape(1), - np_rstride = a.strides(0) / sizeof(Scalar), - np_cstride = a.strides(1) / sizeof(Scalar); + np_rstride = a.strides(0) / static_cast<ssize_t>(sizeof(Scalar)), + np_cstride = a.strides(1) / static_cast<ssize_t>(sizeof(Scalar)); if ((fixed_rows && np_rows != rows) || (fixed_cols && np_cols != cols)) return false; @@ -149,7 +156,7 @@ template <typename Type_> struct EigenProps { // Otherwise we're storing an n-vector. Only one of the strides will be used, but whichever // is used, we want the (single) numpy stride value. const EigenIndex n = a.shape(0), - stride = a.strides(0) / sizeof(Scalar); + stride = a.strides(0) / static_cast<ssize_t>(sizeof(Scalar)); if (vector) { // Eigen type is a compile-time vector if (fixed && size != n) @@ -179,39 +186,35 @@ template <typename Type_> struct EigenProps { constexpr bool show_c_contiguous = show_order && requires_row_major; constexpr bool show_f_contiguous = !show_c_contiguous && show_order && requires_col_major; - return _("numpy.ndarray[") + npy_format_descriptor<Scalar>::name() + - _("[") + _<fixed_rows>(_<(size_t) rows>(), _("m")) + - _(", ") + _<fixed_cols>(_<(size_t) cols>(), _("n")) + - _("]") + - // For a reference type (e.g. Ref<MatrixXd>) we have other constraints that might need to be - // satisfied: writeable=True (for a mutable reference), and, depending on the map's stride - // options, possibly f_contiguous or c_contiguous. We include them in the descriptor output - // to provide some hint as to why a TypeError is occurring (otherwise it can be confusing to - // see that a function accepts a 'numpy.ndarray[float64[3,2]]' and an error message that you - // *gave* a numpy.ndarray of the right type and dimensions. - _<show_writeable>(", flags.writeable", "") + - _<show_c_contiguous>(", flags.c_contiguous", "") + - _<show_f_contiguous>(", flags.f_contiguous", "") + - _("]"); + return type_descr(_("numpy.ndarray[") + npy_format_descriptor<Scalar>::name() + + _("[") + _<fixed_rows>(_<(size_t) rows>(), _("m")) + + _(", ") + _<fixed_cols>(_<(size_t) cols>(), _("n")) + + _("]") + + // For a reference type (e.g. Ref<MatrixXd>) we have other constraints that might need to be + // satisfied: writeable=True (for a mutable reference), and, depending on the map's stride + // options, possibly f_contiguous or c_contiguous. We include them in the descriptor output + // to provide some hint as to why a TypeError is occurring (otherwise it can be confusing to + // see that a function accepts a 'numpy.ndarray[float64[3,2]]' and an error message that you + // *gave* a numpy.ndarray of the right type and dimensions. + _<show_writeable>(", flags.writeable", "") + + _<show_c_contiguous>(", flags.c_contiguous", "") + + _<show_f_contiguous>(", flags.f_contiguous", "") + + _("]") + ); } }; // Casts an Eigen type to numpy array. If given a base, the numpy array references the src data, // otherwise it'll make a copy. writeable lets you turn off the writeable flag for the array. template <typename props> handle eigen_array_cast(typename props::Type const &src, handle base = handle(), bool writeable = true) { - constexpr size_t elem_size = sizeof(typename props::Scalar); - std::vector<size_t> shape, strides; - if (props::vector) { - shape.push_back(src.size()); - strides.push_back(elem_size * src.innerStride()); - } - else { - shape.push_back(src.rows()); - shape.push_back(src.cols()); - strides.push_back(elem_size * src.rowStride()); - strides.push_back(elem_size * src.colStride()); - } - array a(std::move(shape), std::move(strides), src.data(), base); + constexpr ssize_t elem_size = sizeof(typename props::Scalar); + array a; + if (props::vector) + a = array({ src.size() }, { elem_size * src.innerStride() }, src.data(), base); + else + a = array({ src.rows(), src.cols() }, { elem_size * src.rowStride(), elem_size * src.colStride() }, + src.data(), base); + if (!writeable) array_proxy(a.ptr())->flags &= ~detail::npy_api::NPY_ARRAY_WRITEABLE_; @@ -246,8 +249,14 @@ struct type_caster<Type, enable_if_t<is_eigen_dense_plain<Type>::value>> { using Scalar = typename Type::Scalar; using props = EigenProps<Type>; - bool load(handle src, bool) { - auto buf = array_t<Scalar>::ensure(src); + bool load(handle src, bool convert) { + // If we're in no-convert mode, only load if given an array of the correct type + if (!convert && !isinstance<array_t<Scalar>>(src)) + return false; + + // Coerce into an array, but don't do type conversion yet; the copy below handles it. + auto buf = array::ensure(src); + if (!buf) return false; @@ -257,9 +266,19 @@ struct type_caster<Type, enable_if_t<is_eigen_dense_plain<Type>::value>> { auto fits = props::conformable(buf); if (!fits) - return false; // Non-comformable vector/matrix types + return false; + + // Allocate the new type, then build a numpy reference into it + value = Type(fits.rows, fits.cols); + auto ref = reinterpret_steal<array>(eigen_ref_array<props>(value)); + if (dims == 1) ref = ref.squeeze(); - value = Eigen::Map<const Type, 0, EigenDStride>(buf.data(), fits.rows, fits.cols, fits.stride); + int result = detail::npy_api::get().PyArray_CopyInto_(ref.ptr(), buf.ptr()); + + if (result < 0) { // Copy failed! + PyErr_Clear(); + return false; + } return true; } @@ -318,11 +337,12 @@ public: return cast_impl(src, policy, parent); } - static PYBIND11_DESCR name() { return type_descr(props::descriptor()); } + static PYBIND11_DESCR name() { return props::descriptor(); } operator Type*() { return &value; } operator Type&() { return value; } - template <typename T> using cast_op_type = cast_op_type<T>; + operator Type&&() && { return std::move(value); } + template <typename T> using cast_op_type = movable_cast_op_type<T>; private: Type value; @@ -442,6 +462,7 @@ public: if (!fits || !fits.template stride_compatible<props>()) return false; copy_or_ref = std::move(copy); + loader_life_support::add_patient(copy_or_ref); } ref.reset(); @@ -522,7 +543,7 @@ public: template<typename Type> struct type_caster<Type, enable_if_t<is_eigen_sparse<Type>::value>> { typedef typename Type::Scalar Scalar; - typedef typename std::remove_reference<decltype(*std::declval<Type>().outerIndexPtr())>::type StorageIndex; + typedef remove_reference_t<decltype(*std::declval<Type>().outerIndexPtr())> StorageIndex; typedef typename Type::Index Index; static constexpr bool rowMajor = Type::IsRowMajor; @@ -535,7 +556,7 @@ struct type_caster<Type, enable_if_t<is_eigen_sparse<Type>::value>> { object matrix_type = sparse_module.attr( rowMajor ? "csr_matrix" : "csc_matrix"); - if (obj.get_type() != matrix_type.ptr()) { + if (!obj.get_type().is(matrix_type)) { try { obj = matrix_type(obj); } catch (const error_already_set &) { @@ -565,9 +586,9 @@ struct type_caster<Type, enable_if_t<is_eigen_sparse<Type>::value>> { object matrix_type = module::import("scipy.sparse").attr( rowMajor ? "csr_matrix" : "csc_matrix"); - array data((size_t) src.nonZeros(), src.valuePtr()); - array outerIndices((size_t) (rowMajor ? src.rows() : src.cols()) + 1, src.outerIndexPtr()); - array innerIndices((size_t) src.nonZeros(), src.innerIndexPtr()); + array data(src.nonZeros(), src.valuePtr()); + array outerIndices((rowMajor ? src.rows() : src.cols()) + 1, src.outerIndexPtr()); + array innerIndices(src.nonZeros(), src.innerIndexPtr()); return matrix_type( std::make_tuple(data, innerIndices, outerIndices), @@ -580,7 +601,7 @@ struct type_caster<Type, enable_if_t<is_eigen_sparse<Type>::value>> { }; NAMESPACE_END(detail) -NAMESPACE_END(pybind11) +NAMESPACE_END(PYBIND11_NAMESPACE) #if defined(__GNUG__) || defined(__clang__) # pragma GCC diagnostic pop diff --git a/ext/pybind11/include/pybind11/embed.h b/ext/pybind11/include/pybind11/embed.h new file mode 100644 index 000000000..6664967c1 --- /dev/null +++ b/ext/pybind11/include/pybind11/embed.h @@ -0,0 +1,194 @@ +/* + pybind11/embed.h: Support for embedding the interpreter + + Copyright (c) 2017 Wenzel Jakob <wenzel.jakob@epfl.ch> + + All rights reserved. Use of this source code is governed by a + BSD-style license that can be found in the LICENSE file. +*/ + +#pragma once + +#include "pybind11.h" +#include "eval.h" + +#if defined(PYPY_VERSION) +# error Embedding the interpreter is not supported with PyPy +#endif + +#if PY_MAJOR_VERSION >= 3 +# define PYBIND11_EMBEDDED_MODULE_IMPL(name) \ + extern "C" PyObject *pybind11_init_impl_##name() { \ + return pybind11_init_wrapper_##name(); \ + } +#else +# define PYBIND11_EMBEDDED_MODULE_IMPL(name) \ + extern "C" void pybind11_init_impl_##name() { \ + pybind11_init_wrapper_##name(); \ + } +#endif + +/** \rst + Add a new module to the table of builtins for the interpreter. Must be + defined in global scope. The first macro parameter is the name of the + module (without quotes). The second parameter is the variable which will + be used as the interface to add functions and classes to the module. + + .. code-block:: cpp + + PYBIND11_EMBEDDED_MODULE(example, m) { + // ... initialize functions and classes here + m.def("foo", []() { + return "Hello, World!"; + }); + } + \endrst */ +#define PYBIND11_EMBEDDED_MODULE(name, variable) \ + static void PYBIND11_CONCAT(pybind11_init_, name)(pybind11::module &); \ + static PyObject PYBIND11_CONCAT(*pybind11_init_wrapper_, name)() { \ + auto m = pybind11::module(PYBIND11_TOSTRING(name)); \ + try { \ + PYBIND11_CONCAT(pybind11_init_, name)(m); \ + return m.ptr(); \ + } catch (pybind11::error_already_set &e) { \ + PyErr_SetString(PyExc_ImportError, e.what()); \ + return nullptr; \ + } catch (const std::exception &e) { \ + PyErr_SetString(PyExc_ImportError, e.what()); \ + return nullptr; \ + } \ + } \ + PYBIND11_EMBEDDED_MODULE_IMPL(name) \ + pybind11::detail::embedded_module name(PYBIND11_TOSTRING(name), \ + PYBIND11_CONCAT(pybind11_init_impl_, name)); \ + void PYBIND11_CONCAT(pybind11_init_, name)(pybind11::module &variable) + + +NAMESPACE_BEGIN(PYBIND11_NAMESPACE) +NAMESPACE_BEGIN(detail) + +/// Python 2.7/3.x compatible version of `PyImport_AppendInittab` and error checks. +struct embedded_module { +#if PY_MAJOR_VERSION >= 3 + using init_t = PyObject *(*)(); +#else + using init_t = void (*)(); +#endif + embedded_module(const char *name, init_t init) { + if (Py_IsInitialized()) + pybind11_fail("Can't add new modules after the interpreter has been initialized"); + + auto result = PyImport_AppendInittab(name, init); + if (result == -1) + pybind11_fail("Insufficient memory to add a new module"); + } +}; + +NAMESPACE_END(detail) + +/** \rst + Initialize the Python interpreter. No other pybind11 or CPython API functions can be + called before this is done; with the exception of `PYBIND11_EMBEDDED_MODULE`. The + optional parameter can be used to skip the registration of signal handlers (see the + Python documentation for details). Calling this function again after the interpreter + has already been initialized is a fatal error. + \endrst */ +inline void initialize_interpreter(bool init_signal_handlers = true) { + if (Py_IsInitialized()) + pybind11_fail("The interpreter is already running"); + + Py_InitializeEx(init_signal_handlers ? 1 : 0); + + // Make .py files in the working directory available by default + module::import("sys").attr("path").cast<list>().append("."); +} + +/** \rst + Shut down the Python interpreter. No pybind11 or CPython API functions can be called + after this. In addition, pybind11 objects must not outlive the interpreter: + + .. code-block:: cpp + + { // BAD + py::initialize_interpreter(); + auto hello = py::str("Hello, World!"); + py::finalize_interpreter(); + } // <-- BOOM, hello's destructor is called after interpreter shutdown + + { // GOOD + py::initialize_interpreter(); + { // scoped + auto hello = py::str("Hello, World!"); + } // <-- OK, hello is cleaned up properly + py::finalize_interpreter(); + } + + { // BETTER + py::scoped_interpreter guard{}; + auto hello = py::str("Hello, World!"); + } + + .. warning:: + + The interpreter can be restarted by calling `initialize_interpreter` again. + Modules created using pybind11 can be safely re-initialized. However, Python + itself cannot completely unload binary extension modules and there are several + caveats with regard to interpreter restarting. All the details can be found + in the CPython documentation. In short, not all interpreter memory may be + freed, either due to reference cycles or user-created global data. + + \endrst */ +inline void finalize_interpreter() { + handle builtins(PyEval_GetBuiltins()); + const char *id = PYBIND11_INTERNALS_ID; + + // Get the internals pointer (without creating it if it doesn't exist). It's possible for the + // internals to be created during Py_Finalize() (e.g. if a py::capsule calls `get_internals()` + // during destruction), so we get the pointer-pointer here and check it after Py_Finalize(). + detail::internals **internals_ptr_ptr = &detail::get_internals_ptr(); + // It could also be stashed in builtins, so look there too: + if (builtins.contains(id) && isinstance<capsule>(builtins[id])) + internals_ptr_ptr = capsule(builtins[id]); + + Py_Finalize(); + + if (internals_ptr_ptr) { + delete *internals_ptr_ptr; + *internals_ptr_ptr = nullptr; + } +} + +/** \rst + Scope guard version of `initialize_interpreter` and `finalize_interpreter`. + This a move-only guard and only a single instance can exist. + + .. code-block:: cpp + + #include <pybind11/embed.h> + + int main() { + py::scoped_interpreter guard{}; + py::print(Hello, World!); + } // <-- interpreter shutdown + \endrst */ +class scoped_interpreter { +public: + scoped_interpreter(bool init_signal_handlers = true) { + initialize_interpreter(init_signal_handlers); + } + + scoped_interpreter(const scoped_interpreter &) = delete; + scoped_interpreter(scoped_interpreter &&other) noexcept { other.is_valid = false; } + scoped_interpreter &operator=(const scoped_interpreter &) = delete; + scoped_interpreter &operator=(scoped_interpreter &&) = delete; + + ~scoped_interpreter() { + if (is_valid) + finalize_interpreter(); + } + +private: + bool is_valid = true; +}; + +NAMESPACE_END(PYBIND11_NAMESPACE) diff --git a/ext/pybind11/include/pybind11/eval.h b/ext/pybind11/include/pybind11/eval.h index 5b2b98272..ea85ba1db 100644 --- a/ext/pybind11/include/pybind11/eval.h +++ b/ext/pybind11/include/pybind11/eval.h @@ -11,11 +11,9 @@ #pragma once -#pragma once - #include "pybind11.h" -NAMESPACE_BEGIN(pybind11) +NAMESPACE_BEGIN(PYBIND11_NAMESPACE) enum eval_mode { /// Evaluate a string containing an isolated expression @@ -29,12 +27,7 @@ enum eval_mode { }; template <eval_mode mode = eval_expr> -object eval(str expr, object global = object(), object local = object()) { - if (!global) { - global = reinterpret_borrow<object>(PyEval_GetGlobals()); - if (!global) - global = dict(); - } +object eval(str expr, object global = globals(), object local = object()) { if (!local) local = global; @@ -56,13 +49,25 @@ object eval(str expr, object global = object(), object local = object()) { return reinterpret_steal<object>(result); } +template <eval_mode mode = eval_expr, size_t N> +object eval(const char (&s)[N], object global = globals(), object local = object()) { + /* Support raw string literals by removing common leading whitespace */ + auto expr = (s[0] == '\n') ? str(module::import("textwrap").attr("dedent")(s)) + : str(s); + return eval<mode>(expr, global, local); +} + +inline void exec(str expr, object global = globals(), object local = object()) { + eval<eval_statements>(expr, global, local); +} + +template <size_t N> +void exec(const char (&s)[N], object global = globals(), object local = object()) { + eval<eval_statements>(s, global, local); +} + template <eval_mode mode = eval_statements> -object eval_file(str fname, object global = object(), object local = object()) { - if (!global) { - global = reinterpret_borrow<object>(PyEval_GetGlobals()); - if (!global) - global = dict(); - } +object eval_file(str fname, object global = globals(), object local = object()) { if (!local) local = global; @@ -109,4 +114,4 @@ object eval_file(str fname, object global = object(), object local = object()) { return reinterpret_steal<object>(result); } -NAMESPACE_END(pybind11) +NAMESPACE_END(PYBIND11_NAMESPACE) diff --git a/ext/pybind11/include/pybind11/functional.h b/ext/pybind11/include/pybind11/functional.h index a99ee737f..eda14ba58 100644 --- a/ext/pybind11/include/pybind11/functional.h +++ b/ext/pybind11/include/pybind11/functional.h @@ -12,7 +12,7 @@ #include "pybind11.h" #include <functional> -NAMESPACE_BEGIN(pybind11) +NAMESPACE_BEGIN(PYBIND11_NAMESPACE) NAMESPACE_BEGIN(detail) template <typename Return, typename... Args> @@ -22,14 +22,18 @@ struct type_caster<std::function<Return(Args...)>> { using function_type = Return (*) (Args...); public: - bool load(handle src_, bool) { - if (src_.is_none()) + bool load(handle src, bool convert) { + if (src.is_none()) { + // Defer accepting None to other overloads (if we aren't in convert mode): + if (!convert) return false; return true; + } - src_ = detail::get_function(src_); - if (!src_ || !PyCallable_Check(src_.ptr())) + if (!isinstance<function>(src)) return false; + auto func = reinterpret_borrow<function>(src); + /* When passing a C++ function as an argument to another C++ function via Python, every function call would normally involve @@ -38,21 +42,21 @@ public: stateless (i.e. function pointer or lambda function without captured variables), in which case the roundtrip can be avoided. */ - if (PyCFunction_Check(src_.ptr())) { - auto c = reinterpret_borrow<capsule>(PyCFunction_GET_SELF(src_.ptr())); + if (auto cfunc = func.cpp_function()) { + auto c = reinterpret_borrow<capsule>(PyCFunction_GET_SELF(cfunc.ptr())); auto rec = (function_record *) c; - if (rec && rec->is_stateless && rec->data[1] == &typeid(function_type)) { + if (rec && rec->is_stateless && + same_type(typeid(function_type), *reinterpret_cast<const std::type_info *>(rec->data[1]))) { struct capture { function_type f; }; value = ((capture *) &rec->data)->f; return true; } } - auto src = reinterpret_borrow<object>(src_); - value = [src](Args... args) -> Return { + value = [func](Args... args) -> Return { gil_scoped_acquire acq; - object retval(src(std::forward<Args>(args)...)); + object retval(func(std::forward<Args>(args)...)); /* Visual studio 2015 parser issue: need parentheses around this expression */ return (retval.template cast<Return>()); }; @@ -78,4 +82,4 @@ public: }; NAMESPACE_END(detail) -NAMESPACE_END(pybind11) +NAMESPACE_END(PYBIND11_NAMESPACE) diff --git a/ext/pybind11/include/pybind11/iostream.h b/ext/pybind11/include/pybind11/iostream.h new file mode 100644 index 000000000..a9c27aac1 --- /dev/null +++ b/ext/pybind11/include/pybind11/iostream.h @@ -0,0 +1,200 @@ +/* + pybind11/iostream.h -- Tools to assist with redirecting cout and cerr to Python + + Copyright (c) 2017 Henry F. Schreiner + + All rights reserved. Use of this source code is governed by a + BSD-style license that can be found in the LICENSE file. +*/ + +#pragma once + +#include "pybind11.h" + +#include <streambuf> +#include <ostream> +#include <string> +#include <memory> +#include <iostream> + +NAMESPACE_BEGIN(PYBIND11_NAMESPACE) +NAMESPACE_BEGIN(detail) + +// Buffer that writes to Python instead of C++ +class pythonbuf : public std::streambuf { +private: + using traits_type = std::streambuf::traits_type; + + char d_buffer[1024]; + object pywrite; + object pyflush; + + int overflow(int c) { + if (!traits_type::eq_int_type(c, traits_type::eof())) { + *pptr() = traits_type::to_char_type(c); + pbump(1); + } + return sync() ? traits_type::not_eof(c) : traits_type::eof(); + } + + int sync() { + if (pbase() != pptr()) { + // This subtraction cannot be negative, so dropping the sign + str line(pbase(), static_cast<size_t>(pptr() - pbase())); + + pywrite(line); + pyflush(); + + setp(pbase(), epptr()); + } + return 0; + } + +public: + pythonbuf(object pyostream) + : pywrite(pyostream.attr("write")), + pyflush(pyostream.attr("flush")) { + setp(d_buffer, d_buffer + sizeof(d_buffer) - 1); + } + + /// Sync before destroy + ~pythonbuf() { + sync(); + } +}; + +NAMESPACE_END(detail) + + +/** \rst + This a move-only guard that redirects output. + + .. code-block:: cpp + + #include <pybind11/iostream.h> + + ... + + { + py::scoped_ostream_redirect output; + std::cout << "Hello, World!"; // Python stdout + } // <-- return std::cout to normal + + You can explicitly pass the c++ stream and the python object, + for example to guard stderr instead. + + .. code-block:: cpp + + { + py::scoped_ostream_redirect output{std::cerr, py::module::import("sys").attr("stderr")}; + std::cerr << "Hello, World!"; + } + \endrst */ +class scoped_ostream_redirect { +protected: + std::streambuf *old; + std::ostream &costream; + detail::pythonbuf buffer; + +public: + scoped_ostream_redirect( + std::ostream &costream = std::cout, + object pyostream = module::import("sys").attr("stdout")) + : costream(costream), buffer(pyostream) { + old = costream.rdbuf(&buffer); + } + + ~scoped_ostream_redirect() { + costream.rdbuf(old); + } + + scoped_ostream_redirect(const scoped_ostream_redirect &) = delete; + scoped_ostream_redirect(scoped_ostream_redirect &&other) = default; + scoped_ostream_redirect &operator=(const scoped_ostream_redirect &) = delete; + scoped_ostream_redirect &operator=(scoped_ostream_redirect &&) = delete; +}; + + +/** \rst + Like `scoped_ostream_redirect`, but redirects cerr by default. This class + is provided primary to make ``py::call_guard`` easier to make. + + .. code-block:: cpp + + m.def("noisy_func", &noisy_func, + py::call_guard<scoped_ostream_redirect, + scoped_estream_redirect>()); + +\endrst */ +class scoped_estream_redirect : public scoped_ostream_redirect { +public: + scoped_estream_redirect( + std::ostream &costream = std::cerr, + object pyostream = module::import("sys").attr("stderr")) + : scoped_ostream_redirect(costream,pyostream) {} +}; + + +NAMESPACE_BEGIN(detail) + +// Class to redirect output as a context manager. C++ backend. +class OstreamRedirect { + bool do_stdout_; + bool do_stderr_; + std::unique_ptr<scoped_ostream_redirect> redirect_stdout; + std::unique_ptr<scoped_estream_redirect> redirect_stderr; + +public: + OstreamRedirect(bool do_stdout = true, bool do_stderr = true) + : do_stdout_(do_stdout), do_stderr_(do_stderr) {} + + void enter() { + if (do_stdout_) + redirect_stdout.reset(new scoped_ostream_redirect()); + if (do_stderr_) + redirect_stderr.reset(new scoped_estream_redirect()); + } + + void exit() { + redirect_stdout.reset(); + redirect_stderr.reset(); + } +}; + +NAMESPACE_END(detail) + +/** \rst + This is a helper function to add a C++ redirect context manager to Python + instead of using a C++ guard. To use it, add the following to your binding code: + + .. code-block:: cpp + + #include <pybind11/iostream.h> + + ... + + py::add_ostream_redirect(m, "ostream_redirect"); + + You now have a Python context manager that redirects your output: + + .. code-block:: python + + with m.ostream_redirect(): + m.print_to_cout_function() + + This manager can optionally be told which streams to operate on: + + .. code-block:: python + + with m.ostream_redirect(stdout=true, stderr=true): + m.noisy_function_with_error_printing() + + \endrst */ +inline class_<detail::OstreamRedirect> add_ostream_redirect(module m, std::string name = "ostream_redirect") { + return class_<detail::OstreamRedirect>(m, name.c_str(), module_local()) + .def(init<bool,bool>(), arg("stdout")=true, arg("stderr")=true) + .def("__enter__", &detail::OstreamRedirect::enter) + .def("__exit__", [](detail::OstreamRedirect &self, args) { self.exit(); }); +} + +NAMESPACE_END(PYBIND11_NAMESPACE) diff --git a/ext/pybind11/include/pybind11/numpy.h b/ext/pybind11/include/pybind11/numpy.h index 3227a12eb..55bb81698 100644 --- a/ext/pybind11/include/pybind11/numpy.h +++ b/ext/pybind11/include/pybind11/numpy.h @@ -29,12 +29,12 @@ #endif /* This will be true on all flat address space platforms and allows us to reduce the - whole npy_intp / size_t / Py_intptr_t business down to just size_t for all size + whole npy_intp / ssize_t / Py_intptr_t business down to just ssize_t for all size and dimension types (e.g. shape, strides, indexing), instead of inflicting this upon the library user. */ -static_assert(sizeof(size_t) == sizeof(Py_intptr_t), "size_t != Py_intptr_t"); +static_assert(sizeof(ssize_t) == sizeof(Py_intptr_t), "ssize_t != Py_intptr_t"); -NAMESPACE_BEGIN(pybind11) +NAMESPACE_BEGIN(PYBIND11_NAMESPACE) class array; // Forward declaration @@ -129,6 +129,11 @@ struct npy_api { NPY_STRING_, NPY_UNICODE_, NPY_VOID_ }; + typedef struct { + Py_intptr_t *ptr; + int len; + } PyArray_Dims; + static npy_api& get() { static npy_api api = lookup(); return api; @@ -141,11 +146,13 @@ struct npy_api { return (bool) PyObject_TypeCheck(obj, PyArrayDescr_Type_); } + unsigned int (*PyArray_GetNDArrayCFeatureVersion_)(); PyObject *(*PyArray_DescrFromType_)(int); PyObject *(*PyArray_NewFromDescr_) (PyTypeObject *, PyObject *, int, Py_intptr_t *, Py_intptr_t *, void *, int, PyObject *); PyObject *(*PyArray_DescrNewFromType_)(int); + int (*PyArray_CopyInto_)(PyObject *, PyObject *); PyObject *(*PyArray_NewCopy_)(PyObject *, int); PyTypeObject *PyArray_Type_; PyTypeObject *PyVoidArrType_Type_; @@ -158,14 +165,18 @@ struct npy_api { Py_ssize_t *, PyObject **, PyObject *); PyObject *(*PyArray_Squeeze_)(PyObject *); int (*PyArray_SetBaseObject_)(PyObject *, PyObject *); + PyObject* (*PyArray_Resize_)(PyObject*, PyArray_Dims*, int, int); private: enum functions { + API_PyArray_GetNDArrayCFeatureVersion = 211, API_PyArray_Type = 2, API_PyArrayDescr_Type = 3, API_PyVoidArrType_Type = 39, API_PyArray_DescrFromType = 45, API_PyArray_DescrFromScalar = 57, API_PyArray_FromAny = 69, + API_PyArray_Resize = 80, + API_PyArray_CopyInto = 82, API_PyArray_NewCopy = 85, API_PyArray_NewFromDescr = 94, API_PyArray_DescrNewFromType = 9, @@ -186,12 +197,17 @@ private: #endif npy_api api; #define DECL_NPY_API(Func) api.Func##_ = (decltype(api.Func##_)) api_ptr[API_##Func]; + DECL_NPY_API(PyArray_GetNDArrayCFeatureVersion); + if (api.PyArray_GetNDArrayCFeatureVersion_() < 0x7) + pybind11_fail("pybind11 numpy support requires numpy >= 1.7.0"); DECL_NPY_API(PyArray_Type); DECL_NPY_API(PyVoidArrType_Type); DECL_NPY_API(PyArrayDescr_Type); DECL_NPY_API(PyArray_DescrFromType); DECL_NPY_API(PyArray_DescrFromScalar); DECL_NPY_API(PyArray_FromAny); + DECL_NPY_API(PyArray_Resize); + DECL_NPY_API(PyArray_CopyInto); DECL_NPY_API(PyArray_NewCopy); DECL_NPY_API(PyArray_NewFromDescr); DECL_NPY_API(PyArray_DescrNewFromType); @@ -230,18 +246,68 @@ template <typename T, size_t N> struct is_std_array<std::array<T, N>> : std::tru template <typename T> struct is_complex : std::false_type { }; template <typename T> struct is_complex<std::complex<T>> : std::true_type { }; +template <typename T> struct array_info_scalar { + typedef T type; + static constexpr bool is_array = false; + static constexpr bool is_empty = false; + static PYBIND11_DESCR extents() { return _(""); } + static void append_extents(list& /* shape */) { } +}; +// Computes underlying type and a comma-separated list of extents for array +// types (any mix of std::array and built-in arrays). An array of char is +// treated as scalar because it gets special handling. +template <typename T> struct array_info : array_info_scalar<T> { }; +template <typename T, size_t N> struct array_info<std::array<T, N>> { + using type = typename array_info<T>::type; + static constexpr bool is_array = true; + static constexpr bool is_empty = (N == 0) || array_info<T>::is_empty; + static constexpr size_t extent = N; + + // appends the extents to shape + static void append_extents(list& shape) { + shape.append(N); + array_info<T>::append_extents(shape); + } + + template<typename T2 = T, enable_if_t<!array_info<T2>::is_array, int> = 0> + static PYBIND11_DESCR extents() { + return _<N>(); + } + + template<typename T2 = T, enable_if_t<array_info<T2>::is_array, int> = 0> + static PYBIND11_DESCR extents() { + return concat(_<N>(), array_info<T>::extents()); + } +}; +// For numpy we have special handling for arrays of characters, so we don't include +// the size in the array extents. +template <size_t N> struct array_info<char[N]> : array_info_scalar<char[N]> { }; +template <size_t N> struct array_info<std::array<char, N>> : array_info_scalar<std::array<char, N>> { }; +template <typename T, size_t N> struct array_info<T[N]> : array_info<std::array<T, N>> { }; +template <typename T> using remove_all_extents_t = typename array_info<T>::type; + template <typename T> using is_pod_struct = all_of< - std::is_pod<T>, // since we're accessing directly in memory we need a POD type + std::is_standard_layout<T>, // since we're accessing directly in memory we need a standard layout type +#if !defined(__GNUG__) || defined(_LIBCPP_VERSION) || defined(_GLIBCXX_USE_CXX11_ABI) + // _GLIBCXX_USE_CXX11_ABI indicates that we're using libstdc++ from GCC 5 or newer, independent + // of the actual compiler (Clang can also use libstdc++, but it always defines __GNUC__ == 4). + std::is_trivially_copyable<T>, +#else + // GCC 4 doesn't implement is_trivially_copyable, so approximate it + std::is_trivially_destructible<T>, + satisfies_any_of<T, std::has_trivial_copy_constructor, std::has_trivial_copy_assign>, +#endif satisfies_none_of<T, std::is_reference, std::is_array, is_std_array, std::is_arithmetic, is_complex, std::is_enum> >; -template <size_t Dim = 0, typename Strides> size_t byte_offset_unsafe(const Strides &) { return 0; } -template <size_t Dim = 0, typename Strides, typename... Ix> -size_t byte_offset_unsafe(const Strides &strides, size_t i, Ix... index) { +template <ssize_t Dim = 0, typename Strides> ssize_t byte_offset_unsafe(const Strides &) { return 0; } +template <ssize_t Dim = 0, typename Strides, typename... Ix> +ssize_t byte_offset_unsafe(const Strides &strides, ssize_t i, Ix... index) { return i * strides[Dim] + byte_offset_unsafe<Dim + 1>(strides, index...); } -/** Proxy class providing unsafe, unchecked const access to array data. This is constructed through +/** + * Proxy class providing unsafe, unchecked const access to array data. This is constructed through * the `unchecked<T, N>()` method of `array` or the `unchecked<N>()` method of `array_t<T>`. `Dims` * will be -1 for dimensions determined at runtime. */ @@ -252,66 +318,68 @@ protected: const unsigned char *data_; // Storing the shape & strides in local variables (i.e. these arrays) allows the compiler to // make large performance gains on big, nested loops, but requires compile-time dimensions - conditional_t<Dynamic, const size_t *, std::array<size_t, (size_t) Dims>> - shape_, strides_; - const size_t dims_; + conditional_t<Dynamic, const ssize_t *, std::array<ssize_t, (size_t) Dims>> + shape_, strides_; + const ssize_t dims_; friend class pybind11::array; // Constructor for compile-time dimensions: template <bool Dyn = Dynamic> - unchecked_reference(const void *data, const size_t *shape, const size_t *strides, enable_if_t<!Dyn, size_t>) + unchecked_reference(const void *data, const ssize_t *shape, const ssize_t *strides, enable_if_t<!Dyn, ssize_t>) : data_{reinterpret_cast<const unsigned char *>(data)}, dims_{Dims} { - for (size_t i = 0; i < dims_; i++) { + for (size_t i = 0; i < (size_t) dims_; i++) { shape_[i] = shape[i]; strides_[i] = strides[i]; } } // Constructor for runtime dimensions: template <bool Dyn = Dynamic> - unchecked_reference(const void *data, const size_t *shape, const size_t *strides, enable_if_t<Dyn, size_t> dims) + unchecked_reference(const void *data, const ssize_t *shape, const ssize_t *strides, enable_if_t<Dyn, ssize_t> dims) : data_{reinterpret_cast<const unsigned char *>(data)}, shape_{shape}, strides_{strides}, dims_{dims} {} public: - /** Unchecked const reference access to data at the given indices. For a compile-time known + /** + * Unchecked const reference access to data at the given indices. For a compile-time known * number of dimensions, this requires the correct number of arguments; for run-time * dimensionality, this is not checked (and so is up to the caller to use safely). */ template <typename... Ix> const T &operator()(Ix... index) const { - static_assert(sizeof...(Ix) == Dims || Dynamic, + static_assert(ssize_t{sizeof...(Ix)} == Dims || Dynamic, "Invalid number of indices for unchecked array reference"); - return *reinterpret_cast<const T *>(data_ + byte_offset_unsafe(strides_, size_t(index)...)); + return *reinterpret_cast<const T *>(data_ + byte_offset_unsafe(strides_, ssize_t(index)...)); } - /** Unchecked const reference access to data; this operator only participates if the reference + /** + * Unchecked const reference access to data; this operator only participates if the reference * is to a 1-dimensional array. When present, this is exactly equivalent to `obj(index)`. */ - template <size_t D = Dims, typename = enable_if_t<D == 1 || Dynamic>> - const T &operator[](size_t index) const { return operator()(index); } + template <ssize_t D = Dims, typename = enable_if_t<D == 1 || Dynamic>> + const T &operator[](ssize_t index) const { return operator()(index); } /// Pointer access to the data at the given indices. - template <typename... Ix> const T *data(Ix... ix) const { return &operator()(size_t(ix)...); } + template <typename... Ix> const T *data(Ix... ix) const { return &operator()(ssize_t(ix)...); } /// Returns the item size, i.e. sizeof(T) - constexpr static size_t itemsize() { return sizeof(T); } + constexpr static ssize_t itemsize() { return sizeof(T); } /// Returns the shape (i.e. size) of dimension `dim` - size_t shape(size_t dim) const { return shape_[dim]; } + ssize_t shape(ssize_t dim) const { return shape_[(size_t) dim]; } /// Returns the number of dimensions of the array - size_t ndim() const { return dims_; } + ssize_t ndim() const { return dims_; } /// Returns the total number of elements in the referenced array, i.e. the product of the shapes template <bool Dyn = Dynamic> - enable_if_t<!Dyn, size_t> size() const { - return std::accumulate(shape_.begin(), shape_.end(), (size_t) 1, std::multiplies<size_t>()); + enable_if_t<!Dyn, ssize_t> size() const { + return std::accumulate(shape_.begin(), shape_.end(), (ssize_t) 1, std::multiplies<ssize_t>()); } template <bool Dyn = Dynamic> - enable_if_t<Dyn, size_t> size() const { - return std::accumulate(shape_, shape_ + ndim(), (size_t) 1, std::multiplies<size_t>()); + enable_if_t<Dyn, ssize_t> size() const { + return std::accumulate(shape_, shape_ + ndim(), (ssize_t) 1, std::multiplies<ssize_t>()); } /// Returns the total number of bytes used by the referenced data. Note that the actual span in /// memory may be larger if the referenced array has non-contiguous strides (e.g. for a slice). - size_t nbytes() const { + ssize_t nbytes() const { return size() * itemsize(); } }; @@ -325,26 +393,27 @@ class unchecked_mutable_reference : public unchecked_reference<T, Dims> { public: /// Mutable, unchecked access to data at the given indices. template <typename... Ix> T& operator()(Ix... index) { - static_assert(sizeof...(Ix) == Dims || Dynamic, + static_assert(ssize_t{sizeof...(Ix)} == Dims || Dynamic, "Invalid number of indices for unchecked array reference"); return const_cast<T &>(ConstBase::operator()(index...)); } - /** Mutable, unchecked access data at the given index; this operator only participates if the + /** + * Mutable, unchecked access data at the given index; this operator only participates if the * reference is to a 1-dimensional array (or has runtime dimensions). When present, this is * exactly equivalent to `obj(index)`. */ - template <size_t D = Dims, typename = enable_if_t<D == 1 || Dynamic>> - T &operator[](size_t index) { return operator()(index); } + template <ssize_t D = Dims, typename = enable_if_t<D == 1 || Dynamic>> + T &operator[](ssize_t index) { return operator()(index); } /// Mutable pointer access to the data at the given indices. - template <typename... Ix> T *mutable_data(Ix... ix) { return &operator()(size_t(ix)...); } + template <typename... Ix> T *mutable_data(Ix... ix) { return &operator()(ssize_t(ix)...); } }; -template <typename T, size_t Dim> +template <typename T, ssize_t Dim> struct type_caster<unchecked_reference<T, Dim>> { static_assert(Dim == 0 && Dim > 0 /* always fail */, "unchecked array proxy object is not castable"); }; -template <typename T, size_t Dim> +template <typename T, ssize_t Dim> struct type_caster<unchecked_mutable_reference<T, Dim>> : type_caster<unchecked_reference<T, Dim>> {}; NAMESPACE_END(detail) @@ -365,7 +434,7 @@ public: dtype(const char *format) : dtype(std::string(format)) { } - dtype(list names, list formats, list offsets, size_t itemsize) { + dtype(list names, list formats, list offsets, ssize_t itemsize) { dict args; args["names"] = names; args["formats"] = formats; @@ -388,8 +457,8 @@ public: } /// Size of the data type in bytes. - size_t itemsize() const { - return (size_t) detail::array_descriptor_proxy(m_ptr)->elsize; + ssize_t itemsize() const { + return detail::array_descriptor_proxy(m_ptr)->elsize; } /// Returns true for structured data types. @@ -409,7 +478,7 @@ private: return reinterpret_borrow<object>(obj); } - dtype strip_padding(size_t itemsize) { + dtype strip_padding(ssize_t itemsize) { // Recursively strip all void fields with empty names that are generated for // padding fields (as of NumPy v1.11). if (!has_fields()) @@ -453,14 +522,20 @@ public: forcecast = detail::npy_api::NPY_ARRAY_FORCECAST_ }; - array() : array(0, static_cast<const double *>(nullptr)) {} + array() : array({{0}}, static_cast<const double *>(nullptr)) {} - array(const pybind11::dtype &dt, const std::vector<size_t> &shape, - const std::vector<size_t> &strides, const void *ptr = nullptr, - handle base = handle()) { - auto& api = detail::npy_api::get(); - auto ndim = shape.size(); - if (shape.size() != strides.size()) + using ShapeContainer = detail::any_container<ssize_t>; + using StridesContainer = detail::any_container<ssize_t>; + + // Constructs an array taking shape/strides from arbitrary container types + array(const pybind11::dtype &dt, ShapeContainer shape, StridesContainer strides, + const void *ptr = nullptr, handle base = handle()) { + + if (strides->empty()) + *strides = c_strides(*shape, dt.itemsize()); + + auto ndim = shape->size(); + if (ndim != strides->size()) pybind11_fail("NumPy: shape ndim doesn't match strides ndim"); auto descr = dt; @@ -474,13 +549,12 @@ public: flags = detail::npy_api::NPY_ARRAY_WRITEABLE_; } + auto &api = detail::npy_api::get(); auto tmp = reinterpret_steal<object>(api.PyArray_NewFromDescr_( - api.PyArray_Type_, descr.release().ptr(), (int) ndim, - reinterpret_cast<Py_intptr_t *>(const_cast<size_t*>(shape.data())), - reinterpret_cast<Py_intptr_t *>(const_cast<size_t*>(strides.data())), + api.PyArray_Type_, descr.release().ptr(), (int) ndim, shape->data(), strides->data(), const_cast<void *>(ptr), flags, nullptr)); if (!tmp) - pybind11_fail("NumPy: unable to create array!"); + throw error_already_set(); if (ptr) { if (base) { api.PyArray_SetBaseObject_(tmp.ptr(), base.inc_ref().ptr()); @@ -491,27 +565,23 @@ public: m_ptr = tmp.release().ptr(); } - array(const pybind11::dtype &dt, const std::vector<size_t> &shape, - const void *ptr = nullptr, handle base = handle()) - : array(dt, shape, default_strides(shape, dt.itemsize()), ptr, base) { } + array(const pybind11::dtype &dt, ShapeContainer shape, const void *ptr = nullptr, handle base = handle()) + : array(dt, std::move(shape), {}, ptr, base) { } - array(const pybind11::dtype &dt, size_t count, const void *ptr = nullptr, - handle base = handle()) - : array(dt, std::vector<size_t>{ count }, ptr, base) { } + template <typename T, typename = detail::enable_if_t<std::is_integral<T>::value && !std::is_same<bool, T>::value>> + array(const pybind11::dtype &dt, T count, const void *ptr = nullptr, handle base = handle()) + : array(dt, {{count}}, ptr, base) { } - template<typename T> array(const std::vector<size_t>& shape, - const std::vector<size_t>& strides, - const T* ptr, handle base = handle()) - : array(pybind11::dtype::of<T>(), shape, strides, (const void *) ptr, base) { } + template <typename T> + array(ShapeContainer shape, StridesContainer strides, const T *ptr, handle base = handle()) + : array(pybind11::dtype::of<T>(), std::move(shape), std::move(strides), ptr, base) { } template <typename T> - array(const std::vector<size_t> &shape, const T *ptr, - handle base = handle()) - : array(shape, default_strides(shape, sizeof(T)), ptr, base) { } + array(ShapeContainer shape, const T *ptr, handle base = handle()) + : array(std::move(shape), {}, ptr, base) { } template <typename T> - array(size_t count, const T *ptr, handle base = handle()) - : array(std::vector<size_t>{ count }, ptr, base) { } + explicit array(ssize_t count, const T *ptr, handle base = handle()) : array({count}, {}, ptr, base) { } explicit array(const buffer_info &info) : array(pybind11::dtype(info), info.shape, info.strides, info.ptr) { } @@ -522,23 +592,23 @@ public: } /// Total number of elements - size_t size() const { - return std::accumulate(shape(), shape() + ndim(), (size_t) 1, std::multiplies<size_t>()); + ssize_t size() const { + return std::accumulate(shape(), shape() + ndim(), (ssize_t) 1, std::multiplies<ssize_t>()); } /// Byte size of a single element - size_t itemsize() const { - return (size_t) detail::array_descriptor_proxy(detail::array_proxy(m_ptr)->descr)->elsize; + ssize_t itemsize() const { + return detail::array_descriptor_proxy(detail::array_proxy(m_ptr)->descr)->elsize; } /// Total number of bytes - size_t nbytes() const { + ssize_t nbytes() const { return size() * itemsize(); } /// Number of dimensions - size_t ndim() const { - return (size_t) detail::array_proxy(m_ptr)->nd; + ssize_t ndim() const { + return detail::array_proxy(m_ptr)->nd; } /// Base object @@ -547,24 +617,24 @@ public: } /// Dimensions of the array - const size_t* shape() const { - return reinterpret_cast<const size_t *>(detail::array_proxy(m_ptr)->dimensions); + const ssize_t* shape() const { + return detail::array_proxy(m_ptr)->dimensions; } /// Dimension along a given axis - size_t shape(size_t dim) const { + ssize_t shape(ssize_t dim) const { if (dim >= ndim()) fail_dim_check(dim, "invalid axis"); return shape()[dim]; } /// Strides of the array - const size_t* strides() const { - return reinterpret_cast<const size_t *>(detail::array_proxy(m_ptr)->strides); + const ssize_t* strides() const { + return detail::array_proxy(m_ptr)->strides; } /// Stride along a given axis - size_t strides(size_t dim) const { + ssize_t strides(ssize_t dim) const { if (dim >= ndim()) fail_dim_check(dim, "invalid axis"); return strides()[dim]; @@ -601,40 +671,42 @@ public: /// Byte offset from beginning of the array to a given index (full or partial). /// May throw if the index would lead to out of bounds access. - template<typename... Ix> size_t offset_at(Ix... index) const { - if (sizeof...(index) > ndim()) + template<typename... Ix> ssize_t offset_at(Ix... index) const { + if ((ssize_t) sizeof...(index) > ndim()) fail_dim_check(sizeof...(index), "too many indices for an array"); - return byte_offset(size_t(index)...); + return byte_offset(ssize_t(index)...); } - size_t offset_at() const { return 0; } + ssize_t offset_at() const { return 0; } /// Item count from beginning of the array to a given index (full or partial). /// May throw if the index would lead to out of bounds access. - template<typename... Ix> size_t index_at(Ix... index) const { + template<typename... Ix> ssize_t index_at(Ix... index) const { return offset_at(index...) / itemsize(); } - /** Returns a proxy object that provides access to the array's data without bounds or + /** + * Returns a proxy object that provides access to the array's data without bounds or * dimensionality checking. Will throw if the array is missing the `writeable` flag. Use with * care: the array must not be destroyed or reshaped for the duration of the returned object, * and the caller must take care not to access invalid dimensions or dimension indices. */ - template <typename T, ssize_t Dims = -1> detail::unchecked_mutable_reference<T, Dims> mutable_unchecked() { - if (Dims >= 0 && ndim() != (size_t) Dims) + template <typename T, ssize_t Dims = -1> detail::unchecked_mutable_reference<T, Dims> mutable_unchecked() & { + if (Dims >= 0 && ndim() != Dims) throw std::domain_error("array has incorrect number of dimensions: " + std::to_string(ndim()) + "; expected " + std::to_string(Dims)); return detail::unchecked_mutable_reference<T, Dims>(mutable_data(), shape(), strides(), ndim()); } - /** Returns a proxy object that provides const access to the array's data without bounds or + /** + * Returns a proxy object that provides const access to the array's data without bounds or * dimensionality checking. Unlike `mutable_unchecked()`, this does not require that the * underlying array have the `writable` flag. Use with care: the array must not be destroyed or * reshaped for the duration of the returned object, and the caller must take care not to access * invalid dimensions or dimension indices. */ - template <typename T, ssize_t Dims = -1> detail::unchecked_reference<T, Dims> unchecked() const { - if (Dims >= 0 && ndim() != (size_t) Dims) + template <typename T, ssize_t Dims = -1> detail::unchecked_reference<T, Dims> unchecked() const & { + if (Dims >= 0 && ndim() != Dims) throw std::domain_error("array has incorrect number of dimensions: " + std::to_string(ndim()) + "; expected " + std::to_string(Dims)); return detail::unchecked_reference<T, Dims>(data(), shape(), strides(), ndim()); @@ -646,6 +718,21 @@ public: return reinterpret_steal<array>(api.PyArray_Squeeze_(m_ptr)); } + /// Resize array to given shape + /// If refcheck is true and more that one reference exist to this array + /// then resize will succeed only if it makes a reshape, i.e. original size doesn't change + void resize(ShapeContainer new_shape, bool refcheck = true) { + detail::npy_api::PyArray_Dims d = { + new_shape->data(), int(new_shape->size()) + }; + // try to resize, set ordering param to -1 cause it's not used anyway + object new_array = reinterpret_steal<object>( + detail::npy_api::get().PyArray_Resize_(m_ptr, &d, int(refcheck), -1) + ); + if (!new_array) throw error_already_set(); + if (isinstance<array>(new_array)) { *this = std::move(new_array); } + } + /// Ensure that the argument is a NumPy array /// In case of an error, nullptr is returned and the Python error is cleared. static array ensure(handle h, int ExtraFlags = 0) { @@ -658,14 +745,14 @@ public: protected: template<typename, typename> friend struct detail::npy_format_descriptor; - void fail_dim_check(size_t dim, const std::string& msg) const { + void fail_dim_check(ssize_t dim, const std::string& msg) const { throw index_error(msg + ": " + std::to_string(dim) + " (ndim = " + std::to_string(ndim()) + ")"); } - template<typename... Ix> size_t byte_offset(Ix... index) const { + template<typename... Ix> ssize_t byte_offset(Ix... index) const { check_dimensions(index...); - return detail::byte_offset_unsafe(strides(), size_t(index)...); + return detail::byte_offset_unsafe(strides(), ssize_t(index)...); } void check_writeable() const { @@ -673,25 +760,31 @@ protected: throw std::domain_error("array is not writeable"); } - static std::vector<size_t> default_strides(const std::vector<size_t>& shape, size_t itemsize) { + // Default, C-style strides + static std::vector<ssize_t> c_strides(const std::vector<ssize_t> &shape, ssize_t itemsize) { auto ndim = shape.size(); - std::vector<size_t> strides(ndim); - if (ndim) { - std::fill(strides.begin(), strides.end(), itemsize); - for (size_t i = 0; i < ndim - 1; i++) - for (size_t j = 0; j < ndim - 1 - i; j++) - strides[j] *= shape[ndim - 1 - i]; - } + std::vector<ssize_t> strides(ndim, itemsize); + for (size_t i = ndim - 1; i > 0; --i) + strides[i - 1] = strides[i] * shape[i]; + return strides; + } + + // F-style strides; default when constructing an array_t with `ExtraFlags & f_style` + static std::vector<ssize_t> f_strides(const std::vector<ssize_t> &shape, ssize_t itemsize) { + auto ndim = shape.size(); + std::vector<ssize_t> strides(ndim, itemsize); + for (size_t i = 1; i < ndim; ++i) + strides[i] = strides[i - 1] * shape[i - 1]; return strides; } template<typename... Ix> void check_dimensions(Ix... index) const { - check_dimensions_impl(size_t(0), shape(), size_t(index)...); + check_dimensions_impl(ssize_t(0), shape(), ssize_t(index)...); } - void check_dimensions_impl(size_t, const size_t*) const { } + void check_dimensions_impl(ssize_t, const ssize_t*) const { } - template<typename... Ix> void check_dimensions_impl(size_t axis, const size_t* shape, size_t i, Ix... index) const { + template<typename... Ix> void check_dimensions_impl(ssize_t axis, const ssize_t* shape, ssize_t i, Ix... index) const { if (i >= *shape) { throw index_error(std::string("index ") + std::to_string(i) + " is out of bounds for axis " + std::to_string(axis) + @@ -702,50 +795,58 @@ protected: /// Create array from any object -- always returns a new reference static PyObject *raw_array(PyObject *ptr, int ExtraFlags = 0) { - if (ptr == nullptr) + if (ptr == nullptr) { + PyErr_SetString(PyExc_ValueError, "cannot create a pybind11::array from a nullptr"); return nullptr; + } return detail::npy_api::get().PyArray_FromAny_( ptr, nullptr, 0, 0, detail::npy_api::NPY_ARRAY_ENSUREARRAY_ | ExtraFlags, nullptr); } }; template <typename T, int ExtraFlags = array::forcecast> class array_t : public array { +private: + struct private_ctor {}; + // Delegating constructor needed when both moving and accessing in the same constructor + array_t(private_ctor, ShapeContainer &&shape, StridesContainer &&strides, const T *ptr, handle base) + : array(std::move(shape), std::move(strides), ptr, base) {} public: + static_assert(!detail::array_info<T>::is_array, "Array types cannot be used with array_t"); + using value_type = T; array_t() : array(0, static_cast<const T *>(nullptr)) {} - array_t(handle h, borrowed_t) : array(h, borrowed) { } - array_t(handle h, stolen_t) : array(h, stolen) { } + array_t(handle h, borrowed_t) : array(h, borrowed_t{}) { } + array_t(handle h, stolen_t) : array(h, stolen_t{}) { } PYBIND11_DEPRECATED("Use array_t<T>::ensure() instead") - array_t(handle h, bool is_borrowed) : array(raw_array_t(h.ptr()), stolen) { + array_t(handle h, bool is_borrowed) : array(raw_array_t(h.ptr()), stolen_t{}) { if (!m_ptr) PyErr_Clear(); if (!is_borrowed) Py_XDECREF(h.ptr()); } - array_t(const object &o) : array(raw_array_t(o.ptr()), stolen) { + array_t(const object &o) : array(raw_array_t(o.ptr()), stolen_t{}) { if (!m_ptr) throw error_already_set(); } explicit array_t(const buffer_info& info) : array(info) { } - array_t(const std::vector<size_t> &shape, - const std::vector<size_t> &strides, const T *ptr = nullptr, - handle base = handle()) - : array(shape, strides, ptr, base) { } + array_t(ShapeContainer shape, StridesContainer strides, const T *ptr = nullptr, handle base = handle()) + : array(std::move(shape), std::move(strides), ptr, base) { } - explicit array_t(const std::vector<size_t> &shape, const T *ptr = nullptr, - handle base = handle()) - : array(shape, ptr, base) { } + explicit array_t(ShapeContainer shape, const T *ptr = nullptr, handle base = handle()) + : array_t(private_ctor{}, std::move(shape), + ExtraFlags & f_style ? f_strides(*shape, itemsize()) : c_strides(*shape, itemsize()), + ptr, base) { } explicit array_t(size_t count, const T *ptr = nullptr, handle base = handle()) - : array(count, ptr, base) { } + : array({count}, {}, ptr, base) { } - constexpr size_t itemsize() const { + constexpr ssize_t itemsize() const { return sizeof(T); } - template<typename... Ix> size_t index_at(Ix... index) const { + template<typename... Ix> ssize_t index_at(Ix... index) const { return offset_at(index...) / itemsize(); } @@ -761,32 +862,34 @@ public: template<typename... Ix> const T& at(Ix... index) const { if (sizeof...(index) != ndim()) fail_dim_check(sizeof...(index), "index dimension mismatch"); - return *(static_cast<const T*>(array::data()) + byte_offset(size_t(index)...) / itemsize()); + return *(static_cast<const T*>(array::data()) + byte_offset(ssize_t(index)...) / itemsize()); } // Mutable reference to element at a given index template<typename... Ix> T& mutable_at(Ix... index) { if (sizeof...(index) != ndim()) fail_dim_check(sizeof...(index), "index dimension mismatch"); - return *(static_cast<T*>(array::mutable_data()) + byte_offset(size_t(index)...) / itemsize()); + return *(static_cast<T*>(array::mutable_data()) + byte_offset(ssize_t(index)...) / itemsize()); } - /** Returns a proxy object that provides access to the array's data without bounds or + /** + * Returns a proxy object that provides access to the array's data without bounds or * dimensionality checking. Will throw if the array is missing the `writeable` flag. Use with * care: the array must not be destroyed or reshaped for the duration of the returned object, * and the caller must take care not to access invalid dimensions or dimension indices. */ - template <ssize_t Dims = -1> detail::unchecked_mutable_reference<T, Dims> mutable_unchecked() { + template <ssize_t Dims = -1> detail::unchecked_mutable_reference<T, Dims> mutable_unchecked() & { return array::mutable_unchecked<T, Dims>(); } - /** Returns a proxy object that provides const access to the array's data without bounds or + /** + * Returns a proxy object that provides const access to the array's data without bounds or * dimensionality checking. Unlike `unchecked()`, this does not require that the underlying * array have the `writable` flag. Use with care: the array must not be destroyed or reshaped * for the duration of the returned object, and the caller must take care not to access invalid * dimensions or dimension indices. */ - template <ssize_t Dims = -1> detail::unchecked_reference<T, Dims> unchecked() const { + template <ssize_t Dims = -1> detail::unchecked_reference<T, Dims> unchecked() const & { return array::unchecked<T, Dims>(); } @@ -808,8 +911,10 @@ public: protected: /// Create array from any object -- always returns a new reference static PyObject *raw_array_t(PyObject *ptr) { - if (ptr == nullptr) + if (ptr == nullptr) { + PyErr_SetString(PyExc_ValueError, "cannot create a pybind11::array_t from a nullptr"); return nullptr; + } return detail::npy_api::get().PyArray_FromAny_( ptr, dtype::of<T>().release().ptr(), 0, 0, detail::npy_api::NPY_ARRAY_ENSUREARRAY_ | ExtraFlags, nullptr); @@ -838,6 +943,15 @@ struct format_descriptor<T, detail::enable_if_t<std::is_enum<T>::value>> { } }; +template <typename T> +struct format_descriptor<T, detail::enable_if_t<detail::array_info<T>::is_array>> { + static std::string format() { + using detail::_; + PYBIND11_DESCR extents = _("(") + detail::array_info<T>::extents() + _(")"); + return extents.text() + format_descriptor<detail::remove_all_extents_t<T>>::format(); + } +}; + NAMESPACE_BEGIN(detail) template <typename T, int ExtraFlags> struct pyobject_caster<array_t<T, ExtraFlags>> { @@ -906,6 +1020,20 @@ template <size_t N> struct npy_format_descriptor<char[N]> { PYBIND11_DECL_CHAR_F template <size_t N> struct npy_format_descriptor<std::array<char, N>> { PYBIND11_DECL_CHAR_FMT }; #undef PYBIND11_DECL_CHAR_FMT +template<typename T> struct npy_format_descriptor<T, enable_if_t<array_info<T>::is_array>> { +private: + using base_descr = npy_format_descriptor<typename array_info<T>::type>; +public: + static_assert(!array_info<T>::is_empty, "Zero-sized arrays are not supported"); + + static PYBIND11_DESCR name() { return _("(") + array_info<T>::extents() + _(")") + base_descr::name(); } + static pybind11::dtype dtype() { + list shape; + array_info<T>::append_extents(shape); + return pybind11::dtype::from_args(pybind11::make_tuple(base_descr::dtype(), shape)); + } +}; + template<typename T> struct npy_format_descriptor<T, enable_if_t<std::is_enum<T>::value>> { private: using base_descr = npy_format_descriptor<typename std::underlying_type<T>::type>; @@ -916,16 +1044,15 @@ public: struct field_descriptor { const char *name; - size_t offset; - size_t size; - size_t alignment; + ssize_t offset; + ssize_t size; std::string format; dtype descr; }; inline PYBIND11_NOINLINE void register_structured_dtype( const std::initializer_list<field_descriptor>& fields, - const std::type_info& tinfo, size_t itemsize, + const std::type_info& tinfo, ssize_t itemsize, bool (*direct_converter)(PyObject *, void *&)) { auto& numpy_internals = get_numpy_internals(); @@ -953,15 +1080,17 @@ inline PYBIND11_NOINLINE void register_structured_dtype( std::vector<field_descriptor> ordered_fields(fields); std::sort(ordered_fields.begin(), ordered_fields.end(), [](const field_descriptor &a, const field_descriptor &b) { return a.offset < b.offset; }); - size_t offset = 0; + ssize_t offset = 0; std::ostringstream oss; - oss << "T{"; + // mark the structure as unaligned with '^', because numpy and C++ don't + // always agree about alignment (particularly for complex), and we're + // explicitly listing all our padding. This depends on none of the fields + // overriding the endianness. Putting the ^ in front of individual fields + // isn't guaranteed to work due to https://github.com/numpy/numpy/issues/9049 + oss << "^T{"; for (auto& field : ordered_fields) { if (field.offset > offset) oss << (field.offset - offset) << 'x'; - // mark unaligned fields with '^' (unaligned native type) - if (field.offset % field.alignment) - oss << '^'; oss << field.format << ':' << field.name << ':'; offset = field.offset + field.size; } @@ -1020,10 +1149,14 @@ private: } }; +#ifdef __CLION_IDE__ // replace heavy macro with dummy code for the IDE (doesn't affect code) +# define PYBIND11_NUMPY_DTYPE(Type, ...) ((void)0) +# define PYBIND11_NUMPY_DTYPE_EX(Type, ...) ((void)0) +#else + #define PYBIND11_FIELD_DESCRIPTOR_EX(T, Field, Name) \ ::pybind11::detail::field_descriptor { \ Name, offsetof(T, Field), sizeof(decltype(std::declval<T>().Field)), \ - alignof(decltype(std::declval<T>().Field)), \ ::pybind11::format_descriptor<decltype(std::declval<T>().Field)>::format(), \ ::pybind11::detail::npy_format_descriptor<decltype(std::declval<T>().Field)>::dtype() \ } @@ -1088,6 +1221,8 @@ private: ::pybind11::detail::npy_format_descriptor<Type>::register_dtype \ ({PYBIND11_MAP2_LIST (PYBIND11_FIELD_DESCRIPTOR_EX, Type, __VA_ARGS__)}) +#endif // __CLION_IDE__ + template <class T> using array_iterator = typename std::add_pointer<T>::type; @@ -1103,13 +1238,13 @@ array_iterator<T> array_end(const buffer_info& buffer) { class common_iterator { public: - using container_type = std::vector<size_t>; + using container_type = std::vector<ssize_t>; using value_type = container_type::value_type; using size_type = container_type::size_type; common_iterator() : p_ptr(0), m_strides() {} - common_iterator(void* ptr, const container_type& strides, const std::vector<size_t>& shape) + common_iterator(void* ptr, const container_type& strides, const container_type& shape) : p_ptr(reinterpret_cast<char*>(ptr)), m_strides(strides.size()) { m_strides.back() = static_cast<value_type>(strides.back()); for (size_type i = m_strides.size() - 1; i != 0; --i) { @@ -1134,16 +1269,16 @@ private: template <size_t N> class multi_array_iterator { public: - using container_type = std::vector<size_t>; + using container_type = std::vector<ssize_t>; multi_array_iterator(const std::array<buffer_info, N> &buffers, - const std::vector<size_t> &shape) + const container_type &shape) : m_shape(shape.size()), m_index(shape.size(), 0), m_common_iterator() { // Manual copy to avoid conversion warning if using std::copy for (size_t i = 0; i < shape.size(); ++i) - m_shape[i] = static_cast<container_type::value_type>(shape[i]); + m_shape[i] = shape[i]; container_type strides(shape.size()); for (size_t i = 0; i < N; ++i) @@ -1163,8 +1298,8 @@ public: return *this; } - template <size_t K, class T> const T& data() const { - return *reinterpret_cast<T*>(m_common_iterator[K].data()); + template <size_t K, class T = void> T* data() const { + return reinterpret_cast<T*>(m_common_iterator[K].data()); } private: @@ -1172,8 +1307,9 @@ private: using common_iter = common_iterator; void init_common_iterator(const buffer_info &buffer, - const std::vector<size_t> &shape, - common_iter &iterator, container_type &strides) { + const container_type &shape, + common_iter &iterator, + container_type &strides) { auto buffer_shape_iter = buffer.shape.rbegin(); auto buffer_strides_iter = buffer.strides.rbegin(); auto shape_iter = shape.rbegin(); @@ -1181,7 +1317,7 @@ private: while (buffer_shape_iter != buffer.shape.rend()) { if (*shape_iter == *buffer_shape_iter) - *strides_iter = static_cast<size_t>(*buffer_strides_iter); + *strides_iter = *buffer_strides_iter; else *strides_iter = 0; @@ -1212,13 +1348,13 @@ enum class broadcast_trivial { non_trivial, c_trivial, f_trivial }; // singleton or a full-size, C-contiguous (`c_trivial`) or Fortran-contiguous (`f_trivial`) storage // buffer; returns `non_trivial` otherwise. template <size_t N> -broadcast_trivial broadcast(const std::array<buffer_info, N> &buffers, size_t &ndim, std::vector<size_t> &shape) { - ndim = std::accumulate(buffers.begin(), buffers.end(), size_t(0), [](size_t res, const buffer_info& buf) { +broadcast_trivial broadcast(const std::array<buffer_info, N> &buffers, ssize_t &ndim, std::vector<ssize_t> &shape) { + ndim = std::accumulate(buffers.begin(), buffers.end(), ssize_t(0), [](ssize_t res, const buffer_info &buf) { return std::max(res, buf.ndim); }); shape.clear(); - shape.resize(ndim, 1); + shape.resize((size_t) ndim, 1); // Figure out the output size, and make sure all input arrays conform (i.e. are either size 1 or // the full size). @@ -1253,7 +1389,7 @@ broadcast_trivial broadcast(const std::array<buffer_info, N> &buffers, size_t &n // Check for C contiguity (but only if previous inputs were also C contiguous) if (trivial_broadcast_c) { - size_t expect_stride = buffers[i].itemsize; + ssize_t expect_stride = buffers[i].itemsize; auto end = buffers[i].shape.crend(); for (auto shape_iter = buffers[i].shape.crbegin(), stride_iter = buffers[i].strides.crbegin(); trivial_broadcast_c && shape_iter != end; ++shape_iter, ++stride_iter) { @@ -1266,7 +1402,7 @@ broadcast_trivial broadcast(const std::array<buffer_info, N> &buffers, size_t &n // Check for Fortran contiguity (if previous inputs were also F contiguous) if (trivial_broadcast_f) { - size_t expect_stride = buffers[i].itemsize; + ssize_t expect_stride = buffers[i].itemsize; auto end = buffers[i].shape.cend(); for (auto shape_iter = buffers[i].shape.cbegin(), stride_iter = buffers[i].strides.cbegin(); trivial_broadcast_f && shape_iter != end; ++shape_iter, ++stride_iter) { @@ -1284,82 +1420,143 @@ broadcast_trivial broadcast(const std::array<buffer_info, N> &buffers, size_t &n broadcast_trivial::non_trivial; } +template <typename T> +struct vectorize_arg { + static_assert(!std::is_rvalue_reference<T>::value, "Functions with rvalue reference arguments cannot be vectorized"); + // The wrapped function gets called with this type: + using call_type = remove_reference_t<T>; + // Is this a vectorized argument? + static constexpr bool vectorize = + satisfies_any_of<call_type, std::is_arithmetic, is_complex, std::is_pod>::value && + satisfies_none_of<call_type, std::is_pointer, std::is_array, is_std_array, std::is_enum>::value && + (!std::is_reference<T>::value || + (std::is_lvalue_reference<T>::value && std::is_const<call_type>::value)); + // Accept this type: an array for vectorized types, otherwise the type as-is: + using type = conditional_t<vectorize, array_t<remove_cv_t<call_type>, array::forcecast>, T>; +}; + template <typename Func, typename Return, typename... Args> struct vectorize_helper { - typename std::remove_reference<Func>::type f; +private: static constexpr size_t N = sizeof...(Args); + static constexpr size_t NVectorized = constexpr_sum(vectorize_arg<Args>::vectorize...); + static_assert(NVectorized >= 1, + "pybind11::vectorize(...) requires a function with at least one vectorizable argument"); +public: template <typename T> - explicit vectorize_helper(T&&f) : f(std::forward<T>(f)) { } + explicit vectorize_helper(T &&f) : f(std::forward<T>(f)) { } - object operator()(array_t<Args, array::forcecast>... args) { - return run(args..., make_index_sequence<N>()); + object operator()(typename vectorize_arg<Args>::type... args) { + return run(args..., + make_index_sequence<N>(), + select_indices<vectorize_arg<Args>::vectorize...>(), + make_index_sequence<NVectorized>()); } - template <size_t ... Index> object run(array_t<Args, array::forcecast>&... args, index_sequence<Index...> index) { - /* Request buffers from all parameters */ - std::array<buffer_info, N> buffers {{ args.request()... }}; +private: + remove_reference_t<Func> f; + + template <size_t Index> using param_n_t = typename pack_element<Index, typename vectorize_arg<Args>::call_type...>::type; + + // Runs a vectorized function given arguments tuple and three index sequences: + // - Index is the full set of 0 ... (N-1) argument indices; + // - VIndex is the subset of argument indices with vectorized parameters, letting us access + // vectorized arguments (anything not in this sequence is passed through) + // - BIndex is a incremental sequence (beginning at 0) of the same size as VIndex, so that + // we can store vectorized buffer_infos in an array (argument VIndex has its buffer at + // index BIndex in the array). + template <size_t... Index, size_t... VIndex, size_t... BIndex> object run( + typename vectorize_arg<Args>::type &...args, + index_sequence<Index...> i_seq, index_sequence<VIndex...> vi_seq, index_sequence<BIndex...> bi_seq) { + + // Pointers to values the function was called with; the vectorized ones set here will start + // out as array_t<T> pointers, but they will be changed them to T pointers before we make + // call the wrapped function. Non-vectorized pointers are left as-is. + std::array<void *, N> params{{ &args... }}; + + // The array of `buffer_info`s of vectorized arguments: + std::array<buffer_info, NVectorized> buffers{{ reinterpret_cast<array *>(params[VIndex])->request()... }}; /* Determine dimensions parameters of output array */ - size_t ndim = 0; - std::vector<size_t> shape(0); - auto trivial = broadcast(buffers, ndim, shape); - - size_t size = 1; - std::vector<size_t> strides(ndim); - if (ndim > 0) { - if (trivial == broadcast_trivial::f_trivial) { - strides[0] = sizeof(Return); - for (size_t i = 1; i < ndim; ++i) { - strides[i] = strides[i - 1] * shape[i - 1]; - size *= shape[i - 1]; - } - size *= shape[ndim - 1]; - } - else { - strides[ndim-1] = sizeof(Return); - for (size_t i = ndim - 1; i > 0; --i) { - strides[i - 1] = strides[i] * shape[i]; - size *= shape[i]; - } - size *= shape[0]; - } + ssize_t nd = 0; + std::vector<ssize_t> shape(0); + auto trivial = broadcast(buffers, nd, shape); + size_t ndim = (size_t) nd; + + size_t size = std::accumulate(shape.begin(), shape.end(), (size_t) 1, std::multiplies<size_t>()); + + // If all arguments are 0-dimension arrays (i.e. single values) return a plain value (i.e. + // not wrapped in an array). + if (size == 1 && ndim == 0) { + PYBIND11_EXPAND_SIDE_EFFECTS(params[VIndex] = buffers[BIndex].ptr); + return cast(f(*reinterpret_cast<param_n_t<Index> *>(params[Index])...)); } - if (size == 1) - return cast(f(*reinterpret_cast<Args *>(buffers[Index].ptr)...)); + array_t<Return> result; + if (trivial == broadcast_trivial::f_trivial) result = array_t<Return, array::f_style>(shape); + else result = array_t<Return>(shape); - array_t<Return> result(shape, strides); - auto buf = result.request(); - auto output = (Return *) buf.ptr; + if (size == 0) return result; /* Call the function */ - if (trivial == broadcast_trivial::non_trivial) { - apply_broadcast<Index...>(buffers, buf, index); - } else { - for (size_t i = 0; i < size; ++i) - output[i] = f((reinterpret_cast<Args *>(buffers[Index].ptr)[buffers[Index].size == 1 ? 0 : i])...); - } + if (trivial == broadcast_trivial::non_trivial) + apply_broadcast(buffers, params, result, i_seq, vi_seq, bi_seq); + else + apply_trivial(buffers, params, result.mutable_data(), size, i_seq, vi_seq, bi_seq); return result; } - template <size_t... Index> - void apply_broadcast(const std::array<buffer_info, N> &buffers, - buffer_info &output, index_sequence<Index...>) { - using input_iterator = multi_array_iterator<N>; - using output_iterator = array_iterator<Return>; + template <size_t... Index, size_t... VIndex, size_t... BIndex> + void apply_trivial(std::array<buffer_info, NVectorized> &buffers, + std::array<void *, N> ¶ms, + Return *out, + size_t size, + index_sequence<Index...>, index_sequence<VIndex...>, index_sequence<BIndex...>) { + + // Initialize an array of mutable byte references and sizes with references set to the + // appropriate pointer in `params`; as we iterate, we'll increment each pointer by its size + // (except for singletons, which get an increment of 0). + std::array<std::pair<unsigned char *&, const size_t>, NVectorized> vecparams{{ + std::pair<unsigned char *&, const size_t>( + reinterpret_cast<unsigned char *&>(params[VIndex] = buffers[BIndex].ptr), + buffers[BIndex].size == 1 ? 0 : sizeof(param_n_t<VIndex>) + )... + }}; + + for (size_t i = 0; i < size; ++i) { + out[i] = f(*reinterpret_cast<param_n_t<Index> *>(params[Index])...); + for (auto &x : vecparams) x.first += x.second; + } + } - input_iterator input_iter(buffers, output.shape); - output_iterator output_end = array_end<Return>(output); + template <size_t... Index, size_t... VIndex, size_t... BIndex> + void apply_broadcast(std::array<buffer_info, NVectorized> &buffers, + std::array<void *, N> ¶ms, + array_t<Return> &output_array, + index_sequence<Index...>, index_sequence<VIndex...>, index_sequence<BIndex...>) { - for (output_iterator iter = array_begin<Return>(output); - iter != output_end; ++iter, ++input_iter) { - *iter = f((input_iter.template data<Index, Args>())...); + buffer_info output = output_array.request(); + multi_array_iterator<NVectorized> input_iter(buffers, output.shape); + + for (array_iterator<Return> iter = array_begin<Return>(output), end = array_end<Return>(output); + iter != end; + ++iter, ++input_iter) { + PYBIND11_EXPAND_SIDE_EFFECTS(( + params[VIndex] = input_iter.template data<BIndex>() + )); + *iter = f(*reinterpret_cast<param_n_t<Index> *>(std::get<Index>(params))...); } } }; +template <typename Func, typename Return, typename... Args> +vectorize_helper<Func, Return, Args...> +vectorize_extractor(const Func &f, Return (*) (Args ...)) { + return detail::vectorize_helper<Func, Return, Args...>(f); +} + template <typename T, int Flags> struct handle_type_name<array_t<T, Flags>> { static PYBIND11_DESCR name() { return _("numpy.ndarray[") + npy_format_descriptor<T>::name() + _("]"); @@ -1368,25 +1565,35 @@ template <typename T, int Flags> struct handle_type_name<array_t<T, Flags>> { NAMESPACE_END(detail) -template <typename Func, typename Return, typename... Args> -detail::vectorize_helper<Func, Return, Args...> -vectorize(const Func &f, Return (*) (Args ...)) { - return detail::vectorize_helper<Func, Return, Args...>(f); -} - +// Vanilla pointer vectorizer: template <typename Return, typename... Args> -detail::vectorize_helper<Return (*) (Args ...), Return, Args...> +detail::vectorize_helper<Return (*)(Args...), Return, Args...> vectorize(Return (*f) (Args ...)) { - return vectorize<Return (*) (Args ...), Return, Args...>(f, f); + return detail::vectorize_helper<Return (*)(Args...), Return, Args...>(f); } -template <typename Func, typename FuncType = typename detail::remove_class<decltype(&std::remove_reference<Func>::type::operator())>::type> +// lambda vectorizer: +template <typename Func, detail::enable_if_t<detail::is_lambda<Func>::value, int> = 0> auto vectorize(Func &&f) -> decltype( - vectorize(std::forward<Func>(f), (FuncType *) nullptr)) { - return vectorize(std::forward<Func>(f), (FuncType *) nullptr); + detail::vectorize_extractor(std::forward<Func>(f), (detail::function_signature_t<Func> *) nullptr)) { + return detail::vectorize_extractor(std::forward<Func>(f), (detail::function_signature_t<Func> *) nullptr); +} + +// Vectorize a class method (non-const): +template <typename Return, typename Class, typename... Args, + typename Helper = detail::vectorize_helper<decltype(std::mem_fn(std::declval<Return (Class::*)(Args...)>())), Return, Class *, Args...>> +Helper vectorize(Return (Class::*f)(Args...)) { + return Helper(std::mem_fn(f)); +} + +// Vectorize a class method (non-const): +template <typename Return, typename Class, typename... Args, + typename Helper = detail::vectorize_helper<decltype(std::mem_fn(std::declval<Return (Class::*)(Args...) const>())), Return, const Class *, Args...>> +Helper vectorize(Return (Class::*f)(Args...) const) { + return Helper(std::mem_fn(f)); } -NAMESPACE_END(pybind11) +NAMESPACE_END(PYBIND11_NAMESPACE) #if defined(_MSC_VER) #pragma warning(pop) diff --git a/ext/pybind11/include/pybind11/operators.h b/ext/pybind11/include/pybind11/operators.h index 2e78c01a3..b3dd62c3b 100644 --- a/ext/pybind11/include/pybind11/operators.h +++ b/ext/pybind11/include/pybind11/operators.h @@ -13,9 +13,12 @@ #if defined(__clang__) && !defined(__INTEL_COMPILER) # pragma clang diagnostic ignored "-Wunsequenced" // multiple unsequenced modifications to 'self' (when using def(py::self OP Type())) +#elif defined(_MSC_VER) +# pragma warning(push) +# pragma warning(disable: 4127) // warning C4127: Conditional expression is constant #endif -NAMESPACE_BEGIN(pybind11) +NAMESPACE_BEGIN(PYBIND11_NAMESPACE) NAMESPACE_BEGIN(detail) /// Enumeration with all supported operator types @@ -25,7 +28,7 @@ enum op_id : int { op_int, op_long, op_float, op_str, op_cmp, op_gt, op_ge, op_lt, op_le, op_eq, op_ne, op_iadd, op_isub, op_imul, op_idiv, op_imod, op_ilshift, op_irshift, op_iand, op_ixor, op_ior, op_complex, op_bool, op_nonzero, - op_repr, op_truediv + op_repr, op_truediv, op_itruediv, op_hash }; enum op_type : int { @@ -49,22 +52,32 @@ template <op_id, op_type, typename B, typename L, typename R> struct op_impl { } /// Operator implementation generator template <op_id id, op_type ot, typename L, typename R> struct op_ { template <typename Class, typename... Extra> void execute(Class &cl, const Extra&... extra) const { - typedef typename Class::type Base; - typedef typename std::conditional<std::is_same<L, self_t>::value, Base, L>::type L_type; - typedef typename std::conditional<std::is_same<R, self_t>::value, Base, R>::type R_type; - typedef op_impl<id, ot, Base, L_type, R_type> op; + using Base = typename Class::type; + using L_type = conditional_t<std::is_same<L, self_t>::value, Base, L>; + using R_type = conditional_t<std::is_same<R, self_t>::value, Base, R>; + using op = op_impl<id, ot, Base, L_type, R_type>; cl.def(op::name(), &op::execute, is_operator(), extra...); + #if PY_MAJOR_VERSION < 3 + if (id == op_truediv || id == op_itruediv) + cl.def(id == op_itruediv ? "__idiv__" : ot == op_l ? "__div__" : "__rdiv__", + &op::execute, is_operator(), extra...); + #endif } template <typename Class, typename... Extra> void execute_cast(Class &cl, const Extra&... extra) const { - typedef typename Class::type Base; - typedef typename std::conditional<std::is_same<L, self_t>::value, Base, L>::type L_type; - typedef typename std::conditional<std::is_same<R, self_t>::value, Base, R>::type R_type; - typedef op_impl<id, ot, Base, L_type, R_type> op; + using Base = typename Class::type; + using L_type = conditional_t<std::is_same<L, self_t>::value, Base, L>; + using R_type = conditional_t<std::is_same<R, self_t>::value, Base, R>; + using op = op_impl<id, ot, Base, L_type, R_type>; cl.def(op::name(), &op::execute_cast, is_operator(), extra...); + #if PY_MAJOR_VERSION < 3 + if (id == op_truediv || id == op_itruediv) + cl.def(id == op_itruediv ? "__idiv__" : ot == op_l ? "__div__" : "__rdiv__", + &op::execute, is_operator(), extra...); + #endif } }; -#define PYBIND11_BINARY_OPERATOR(id, rid, op, expr) \ +#define PYBIND11_BINARY_OPERATOR(id, rid, op, expr) \ template <typename B, typename L, typename R> struct op_impl<op_##id, op_l, B, L, R> { \ static char const* name() { return "__" #id "__"; } \ static auto execute(const L &l, const R &r) -> decltype(expr) { return (expr); } \ @@ -85,7 +98,7 @@ template <typename T> op_<op_##id, op_r, T, self_t> op(const T &, const self_t & return op_<op_##id, op_r, T, self_t>(); \ } -#define PYBIND11_INPLACE_OPERATOR(id, op, expr) \ +#define PYBIND11_INPLACE_OPERATOR(id, op, expr) \ template <typename B, typename L, typename R> struct op_impl<op_##id, op_l, B, L, R> { \ static char const* name() { return "__" #id "__"; } \ static auto execute(L &l, const R &r) -> decltype(expr) { return expr; } \ @@ -95,7 +108,7 @@ template <typename T> op_<op_##id, op_l, self_t, T> op(const self_t &, const T & return op_<op_##id, op_l, self_t, T>(); \ } -#define PYBIND11_UNARY_OPERATOR(id, op, expr) \ +#define PYBIND11_UNARY_OPERATOR(id, op, expr) \ template <typename B, typename L> struct op_impl<op_##id, op_u, B, L, undefined_t> { \ static char const* name() { return "__" #id "__"; } \ static auto execute(const L &l) -> decltype(expr) { return expr; } \ @@ -108,11 +121,7 @@ inline op_<op_##id, op_u, self_t, undefined_t> op(const self_t &) { PYBIND11_BINARY_OPERATOR(sub, rsub, operator-, l - r) PYBIND11_BINARY_OPERATOR(add, radd, operator+, l + r) PYBIND11_BINARY_OPERATOR(mul, rmul, operator*, l * r) -#if PY_MAJOR_VERSION >= 3 PYBIND11_BINARY_OPERATOR(truediv, rtruediv, operator/, l / r) -#else -PYBIND11_BINARY_OPERATOR(div, rdiv, operator/, l / r) -#endif PYBIND11_BINARY_OPERATOR(mod, rmod, operator%, l % r) PYBIND11_BINARY_OPERATOR(lshift, rlshift, operator<<, l << r) PYBIND11_BINARY_OPERATOR(rshift, rrshift, operator>>, l >> r) @@ -129,7 +138,7 @@ PYBIND11_BINARY_OPERATOR(le, ge, operator<=, l <= r) PYBIND11_INPLACE_OPERATOR(iadd, operator+=, l += r) PYBIND11_INPLACE_OPERATOR(isub, operator-=, l -= r) PYBIND11_INPLACE_OPERATOR(imul, operator*=, l *= r) -PYBIND11_INPLACE_OPERATOR(idiv, operator/=, l /= r) +PYBIND11_INPLACE_OPERATOR(itruediv, operator/=, l /= r) PYBIND11_INPLACE_OPERATOR(imod, operator%=, l %= r) PYBIND11_INPLACE_OPERATOR(ilshift, operator<<=, l <<= r) PYBIND11_INPLACE_OPERATOR(irshift, operator>>=, l >>= r) @@ -139,6 +148,7 @@ PYBIND11_INPLACE_OPERATOR(ior, operator|=, l |= r) PYBIND11_UNARY_OPERATOR(neg, operator-, -l) PYBIND11_UNARY_OPERATOR(pos, operator+, +l) PYBIND11_UNARY_OPERATOR(abs, abs, std::abs(l)) +PYBIND11_UNARY_OPERATOR(hash, hash, std::hash<L>()(l)) PYBIND11_UNARY_OPERATOR(invert, operator~, (~l)) PYBIND11_UNARY_OPERATOR(bool, operator!, !!l) PYBIND11_UNARY_OPERATOR(int, int_, (int) l) @@ -151,4 +161,8 @@ NAMESPACE_END(detail) using detail::self; -NAMESPACE_END(pybind11) +NAMESPACE_END(PYBIND11_NAMESPACE) + +#if defined(_MSC_VER) +# pragma warning(pop) +#endif diff --git a/ext/pybind11/include/pybind11/options.h b/ext/pybind11/include/pybind11/options.h index 3105551dd..cc1e1f6f0 100644 --- a/ext/pybind11/include/pybind11/options.h +++ b/ext/pybind11/include/pybind11/options.h @@ -9,9 +9,9 @@ #pragma once -#include "common.h" +#include "detail/common.h" -NAMESPACE_BEGIN(pybind11) +NAMESPACE_BEGIN(PYBIND11_NAMESPACE) class options { public: @@ -62,4 +62,4 @@ private: state previous_state; }; -NAMESPACE_END(pybind11) +NAMESPACE_END(PYBIND11_NAMESPACE) diff --git a/ext/pybind11/include/pybind11/pybind11.h b/ext/pybind11/include/pybind11/pybind11.h index 5976a36d8..613135a7a 100644 --- a/ext/pybind11/include/pybind11/pybind11.h +++ b/ext/pybind11/include/pybind11/pybind11.h @@ -21,8 +21,12 @@ # pragma warning(disable: 4522) // warning C4522: multiple assignment operators specified #elif defined(__INTEL_COMPILER) # pragma warning(push) +# pragma warning(disable: 68) // integer conversion resulted in a change of sign # pragma warning(disable: 186) // pointless comparison of unsigned integer with zero +# pragma warning(disable: 878) // incompatible exception specifications # pragma warning(disable: 1334) // the "template" keyword used for syntactic disambiguation may only be used within a template +# pragma warning(disable: 1682) // implicit conversion of a 64-bit integral type to a smaller integral type (potential portability problem) +# pragma warning(disable: 1875) // offsetof applied to non-POD (Plain Old Data) types is nonstandard # pragma warning(disable: 2196) // warning #2196: routine is both "inline" and "noinline" #elif defined(__GNUG__) && !defined(__clang__) # pragma GCC diagnostic push @@ -31,13 +35,17 @@ # pragma GCC diagnostic ignored "-Wmissing-field-initializers" # pragma GCC diagnostic ignored "-Wstrict-aliasing" # pragma GCC diagnostic ignored "-Wattributes" +# if __GNUC__ >= 7 +# pragma GCC diagnostic ignored "-Wnoexcept-type" +# endif #endif #include "attr.h" #include "options.h" -#include "class_support.h" +#include "detail/class.h" +#include "detail/init.h" -NAMESPACE_BEGIN(pybind11) +NAMESPACE_BEGIN(PYBIND11_NAMESPACE) /// Wraps an arbitrary C++ function/method/lambda function/.. into a callable Python object class cpp_function : public function { @@ -51,16 +59,11 @@ public: } /// Construct a cpp_function from a lambda function (possibly with internal state) - template <typename Func, typename... Extra, typename = detail::enable_if_t< - detail::satisfies_none_of< - typename std::remove_reference<Func>::type, - std::is_function, std::is_pointer, std::is_member_pointer - >::value> - > + template <typename Func, typename... Extra, + typename = detail::enable_if_t<detail::is_lambda<Func>::value>> cpp_function(Func &&f, const Extra&... extra) { - using FuncType = typename detail::remove_class<decltype(&std::remove_reference<Func>::type::operator())>::type; initialize(std::forward<Func>(f), - (FuncType *) nullptr, extra...); + (detail::function_signature_t<Func> *) nullptr, extra...); } /// Construct a cpp_function from a class method (non-const) @@ -90,7 +93,7 @@ protected: template <typename Func, typename Return, typename... Args, typename... Extra> void initialize(Func &&f, Return (*)(Args...), const Extra&... extra) { - struct capture { typename std::remove_reference<Func>::type f; }; + struct capture { detail::remove_reference_t<Func> f; }; /* Store the function including any extra state it might have (e.g. a lambda capture object) */ auto rec = make_function_record(); @@ -143,9 +146,12 @@ protected: /* Override policy for rvalues -- usually to enforce rvp::move on an rvalue */ const auto policy = detail::return_value_policy_override<Return>::policy(call.func.policy); + /* Function scope guard -- defaults to the compile-to-nothing `void_type` */ + using Guard = detail::extract_guard_t<Extra...>; + /* Perform the function call */ - handle result = cast_out::cast(args_converter.template call<Return>(cap->f), - policy, call.parent); + handle result = cast_out::cast( + std::move(args_converter).template call<Return, Guard>(cap->f), policy, call.parent); /* Invoke call policy post-call hook */ detail::process_attributes<Extra...>::postcall(call, result); @@ -193,6 +199,22 @@ protected: a.descr = strdup(a.value.attr("__repr__")().cast<std::string>().c_str()); } + rec->is_constructor = !strcmp(rec->name, "__init__") || !strcmp(rec->name, "__setstate__"); + +#if !defined(NDEBUG) && !defined(PYBIND11_DISABLE_NEW_STYLE_INIT_WARNING) + if (rec->is_constructor && !rec->is_new_style_constructor) { + const auto class_name = std::string(((PyTypeObject *) rec->scope.ptr())->tp_name); + const auto func_name = std::string(rec->name); + PyErr_WarnEx( + PyExc_FutureWarning, + ("pybind11-bound class '" + class_name + "' is using an old-style " + "placement-new '" + func_name + "' which has been deprecated. See " + "the upgrade guide in pybind11's docs. This message is only visible " + "when compiled in debug mode.").c_str(), 0 + ); + } +#endif + /* Generate a proper function signature */ std::string signature; size_t type_depth = 0, char_index = 0, type_index = 0, arg_index = 0; @@ -234,6 +256,13 @@ protected: .cast<std::string>() + "."; #endif signature += tinfo->type->tp_name; + } else if (rec->is_new_style_constructor && arg_index == 0) { + // A new-style `__init__` takes `self` as `value_and_holder`. + // Rewrite it to the proper class type. +#if defined(PYPY_VERSION) + signature += rec->scope.attr("__module__").cast<std::string>() + "."; +#endif + signature += ((PyTypeObject *) rec->scope.ptr())->tp_name; } else { std::string tname(t->name()); detail::clean_type_id(tname); @@ -246,7 +275,7 @@ protected: if (type_depth != 0 || types[type_index] != nullptr) pybind11_fail("Internal error while parsing type signature (2)"); - #if !defined(PYBIND11_CPP14) + #if !defined(PYBIND11_CONSTEXPR_DESCR) delete[] types; delete[] text; #endif @@ -262,13 +291,10 @@ protected: #endif rec->signature = strdup(signature.c_str()); rec->args.shrink_to_fit(); - rec->is_constructor = !strcmp(rec->name, "__init__") || !strcmp(rec->name, "__setstate__"); rec->nargs = (std::uint16_t) args; -#if PY_MAJOR_VERSION < 3 - if (rec->sibling && PyMethod_Check(rec->sibling.ptr())) - rec->sibling = PyMethod_GET_FUNCTION(rec->sibling.ptr()); -#endif + if (rec->sibling && PYBIND11_INSTANCE_METHOD_CHECK(rec->sibling.ptr())) + rec->sibling = PYBIND11_INSTANCE_METHOD_GET_FUNCTION(rec->sibling.ptr()); detail::function_record *chain = nullptr, *chain_start = rec; if (rec->sibling) { @@ -277,7 +303,7 @@ protected: chain = (detail::function_record *) rec_capsule; /* Never append a method to an overload chain of a parent class; instead, hide the parent's overloads in this case */ - if (chain->scope != rec->scope) + if (!chain->scope.is(rec->scope)) chain = nullptr; } // Don't trigger for things like the default __init__, which are wrapper_descriptors that we are intentionally replacing @@ -289,7 +315,7 @@ protected: if (!chain) { /* No existing overload was found, create a new function object */ rec->def = new PyMethodDef(); - memset(rec->def, 0, sizeof(PyMethodDef)); + std::memset(rec->def, 0, sizeof(PyMethodDef)); rec->def->ml_name = rec->name; rec->def->ml_meth = reinterpret_cast<PyCFunction>(*dispatcher); rec->def->ml_flags = METH_VARARGS | METH_KEYWORDS; @@ -315,6 +341,15 @@ protected: m_ptr = rec->sibling.ptr(); inc_ref(); chain_start = chain; + if (chain->is_method != rec->is_method) + pybind11_fail("overloading a method with both static and instance methods is not supported; " + #if defined(NDEBUG) + "compile in debug mode for more details" + #else + "error while attempting to bind " + std::string(rec->is_method ? "instance" : "static") + " method " + + std::string(pybind11::str(rec->scope.attr("__name__"))) + "." + std::string(rec->name) + signature + #endif + ); while (chain->next) chain = chain->next; chain->next = rec; @@ -405,6 +440,23 @@ protected: handle parent = n_args_in > 0 ? PyTuple_GET_ITEM(args_in, 0) : nullptr, result = PYBIND11_TRY_NEXT_OVERLOAD; + auto self_value_and_holder = value_and_holder(); + if (overloads->is_constructor) { + const auto tinfo = get_type_info((PyTypeObject *) overloads->scope.ptr()); + const auto pi = reinterpret_cast<instance *>(parent.ptr()); + self_value_and_holder = pi->get_value_and_holder(tinfo, false); + + if (!self_value_and_holder.type || !self_value_and_holder.inst) { + PyErr_SetString(PyExc_TypeError, "__init__(self, ...) called with invalid `self` argument"); + return nullptr; + } + + // If this value is already registered it must mean __init__ is invoked multiple times; + // we really can't support that in C++, so just ignore the second __init__. + if (self_value_and_holder.instance_registered()) + return none().release().ptr(); + } + try { // We do this in two passes: in the first pass, we load arguments with `convert=false`; // in the second, we allow conversion (except for arguments with an explicit @@ -452,19 +504,37 @@ protected: size_t args_to_copy = std::min(pos_args, n_args_in); size_t args_copied = 0; + // 0. Inject new-style `self` argument + if (func.is_new_style_constructor) { + // The `value` may have been preallocated by an old-style `__init__` + // if it was a preceding candidate for overload resolution. + if (self_value_and_holder) + self_value_and_holder.type->dealloc(self_value_and_holder); + + call.init_self = PyTuple_GET_ITEM(args_in, 0); + call.args.push_back(reinterpret_cast<PyObject *>(&self_value_and_holder)); + call.args_convert.push_back(false); + ++args_copied; + } + // 1. Copy any position arguments given. - bool bad_kwarg = false; + bool bad_arg = false; for (; args_copied < args_to_copy; ++args_copied) { - if (kwargs_in && args_copied < func.args.size() && func.args[args_copied].name - && PyDict_GetItemString(kwargs_in, func.args[args_copied].name)) { - bad_kwarg = true; + argument_record *arg_rec = args_copied < func.args.size() ? &func.args[args_copied] : nullptr; + if (kwargs_in && arg_rec && arg_rec->name && PyDict_GetItemString(kwargs_in, arg_rec->name)) { + bad_arg = true; break; } - call.args.push_back(PyTuple_GET_ITEM(args_in, args_copied)); - call.args_convert.push_back(args_copied < func.args.size() ? func.args[args_copied].convert : true); + handle arg(PyTuple_GET_ITEM(args_in, args_copied)); + if (arg_rec && !arg_rec->none && arg.is_none()) { + bad_arg = true; + break; + } + call.args.push_back(arg); + call.args_convert.push_back(arg_rec ? arg_rec->convert : true); } - if (bad_kwarg) + if (bad_arg) continue; // Maybe it was meant for another overload (issue #688) // We'll need to copy this if we steal some kwargs for defaults @@ -555,6 +625,7 @@ protected: // 6. Call the function. try { + loader_life_support guard{}; result = func.impl(call); } catch (reference_cast_error &) { result = PYBIND11_TRY_NEXT_OVERLOAD; @@ -583,6 +654,7 @@ protected: // The no-conversion pass finished without success, try again with conversion allowed for (auto &call : second_pass) { try { + loader_life_support guard{}; result = call.func.impl(call); } catch (reference_cast_error &) { result = PYBIND11_TRY_NEXT_OVERLOAD; @@ -622,6 +694,16 @@ protected: return nullptr; } + auto append_note_if_missing_header_is_suspected = [](std::string &msg) { + if (msg.find("std::") != std::string::npos) { + msg += "\n\n" + "Did you forget to `#include <pybind11/stl.h>`? Or <pybind11/complex.h>,\n" + "<pybind11/functional.h>, <pybind11/chrono.h>, etc. Some automatic\n" + "conversions are optional and require extra headers to be included\n" + "when compiling your pybind11 module."; + } + }; + if (result.ptr() == PYBIND11_TRY_NEXT_OVERLOAD) { if (overloads->is_operator) return handle(Py_NotImplemented).inc_ref().ptr(); @@ -679,20 +761,20 @@ protected: } } + append_note_if_missing_header_is_suspected(msg); PyErr_SetString(PyExc_TypeError, msg.c_str()); return nullptr; } else if (!result) { std::string msg = "Unable to convert function return value to a " "Python type! The signature was\n\t"; msg += it->signature; + append_note_if_missing_header_is_suspected(msg); PyErr_SetString(PyExc_TypeError, msg.c_str()); return nullptr; } else { - if (overloads->is_constructor) { - /* When a constructor ran successfully, the corresponding - holder type (e.g. std::unique_ptr) must still be initialized. */ - auto tinfo = get_type_info(Py_TYPE(parent.ptr())); - tinfo->init_holder(parent.ptr(), nullptr); + if (overloads->is_constructor && !self_value_and_holder.holder_constructed()) { + auto *pi = reinterpret_cast<instance *>(parent.ptr()); + self_value_and_holder.type->init_instance(pi, nullptr); } return result.ptr(); } @@ -709,7 +791,7 @@ public: if (!options::show_user_defined_docstrings()) doc = nullptr; #if PY_MAJOR_VERSION >= 3 PyModuleDef *def = new PyModuleDef(); - memset(def, 0, sizeof(PyModuleDef)); + std::memset(def, 0, sizeof(PyModuleDef)); def->m_name = name; def->m_doc = doc; def->m_size = -1; @@ -766,21 +848,36 @@ public: return reinterpret_steal<module>(obj); } + /// Reload the module or throws `error_already_set`. + void reload() { + PyObject *obj = PyImport_ReloadModule(ptr()); + if (!obj) + throw error_already_set(); + *this = reinterpret_steal<module>(obj); + } + // Adds an object to the module using the given name. Throws if an object with the given name // already exists. // // overwrite should almost always be false: attempting to overwrite objects that pybind11 has // established will, in most cases, break things. - PYBIND11_NOINLINE void add_object(const char *name, object &obj, bool overwrite = false) { + PYBIND11_NOINLINE void add_object(const char *name, handle obj, bool overwrite = false) { if (!overwrite && hasattr(*this, name)) pybind11_fail("Error during initialization: multiple incompatible definitions with name \"" + std::string(name) + "\""); - obj.inc_ref(); // PyModule_AddObject() steals a reference - PyModule_AddObject(ptr(), name, obj.ptr()); + PyModule_AddObject(ptr(), name, obj.inc_ref().ptr() /* steals a reference */); } }; +/// \ingroup python_builtins +/// Return a dictionary representing the global variables in the current execution frame, +/// or ``__main__.__dict__`` if there is no frame (usually when the interpreter is embedded). +inline dict globals() { + PyObject *p = PyEval_GetGlobals(); + return reinterpret_borrow<dict>(p ? p : module::import("__main__").attr("__dict__").ptr()); +} + NAMESPACE_BEGIN(detail) /// Generic support for creating new Python heap types class generic_type : public object { @@ -793,7 +890,7 @@ protected: pybind11_fail("generic_type: cannot initialize type \"" + std::string(rec.name) + "\": an object with that name is already defined"); - if (get_type_info(*rec.type)) + if (rec.module_local ? get_local_type_info(*rec.type) : get_global_type_info(*rec.type)) pybind11_fail("generic_type: type \"" + std::string(rec.name) + "\" is already registered!"); @@ -802,20 +899,40 @@ protected: /* Register supplemental type information in C++ dict */ auto *tinfo = new detail::type_info(); tinfo->type = (PyTypeObject *) m_ptr; + tinfo->cpptype = rec.type; tinfo->type_size = rec.type_size; tinfo->operator_new = rec.operator_new; - tinfo->init_holder = rec.init_holder; + tinfo->holder_size_in_ptrs = size_in_ptrs(rec.holder_size); + tinfo->init_instance = rec.init_instance; tinfo->dealloc = rec.dealloc; + tinfo->simple_type = true; + tinfo->simple_ancestors = true; + tinfo->default_holder = rec.default_holder; + tinfo->module_local = rec.module_local; auto &internals = get_internals(); auto tindex = std::type_index(*rec.type); tinfo->direct_conversions = &internals.direct_conversions[tindex]; - tinfo->default_holder = rec.default_holder; - internals.registered_types_cpp[tindex] = tinfo; - internals.registered_types_py[m_ptr] = tinfo; + if (rec.module_local) + registered_local_types_cpp()[tindex] = tinfo; + else + internals.registered_types_cpp[tindex] = tinfo; + internals.registered_types_py[(PyTypeObject *) m_ptr] = { tinfo }; - if (rec.bases.size() > 1 || rec.multiple_inheritance) + if (rec.bases.size() > 1 || rec.multiple_inheritance) { mark_parents_nonsimple(tinfo->type); + tinfo->simple_ancestors = false; + } + else if (rec.bases.size() == 1) { + auto parent_tinfo = get_type_info((PyTypeObject *) rec.bases[0].ptr()); + tinfo->simple_ancestors = parent_tinfo->simple_ancestors; + } + + if (rec.module_local) { + // Stash the local typeinfo and loader so that external modules can access it. + tinfo->module_local_load = &type_caster_generic::local_load; + setattr(m_ptr, PYBIND11_MODULE_LOCAL_ID, capsule(tinfo)); + } } /// Helper function which tags all parents of a type using mult. inheritance @@ -867,33 +984,54 @@ void set_operator_new(type_record *r) { r->operator_new = &T::operator new; } template <typename> void set_operator_new(...) { } +template <typename T, typename SFINAE = void> struct has_operator_delete : std::false_type { }; +template <typename T> struct has_operator_delete<T, void_t<decltype(static_cast<void (*)(void *)>(T::operator delete))>> + : std::true_type { }; +template <typename T, typename SFINAE = void> struct has_operator_delete_size : std::false_type { }; +template <typename T> struct has_operator_delete_size<T, void_t<decltype(static_cast<void (*)(void *, size_t)>(T::operator delete))>> + : std::true_type { }; /// Call class-specific delete if it exists or global otherwise. Can also be an overload set. -template <typename T, typename = void_t<decltype(static_cast<void (*)(void *)>(T::operator delete))>> -void call_operator_delete(T *p) { T::operator delete(p); } +template <typename T, enable_if_t<has_operator_delete<T>::value, int> = 0> +void call_operator_delete(T *p, size_t) { T::operator delete(p); } +template <typename T, enable_if_t<!has_operator_delete<T>::value && has_operator_delete_size<T>::value, int> = 0> +void call_operator_delete(T *p, size_t s) { T::operator delete(p, s); } -inline void call_operator_delete(void *p) { ::operator delete(p); } +inline void call_operator_delete(void *p, size_t) { ::operator delete(p); } NAMESPACE_END(detail) +/// Given a pointer to a member function, cast it to its `Derived` version. +/// Forward everything else unchanged. +template <typename /*Derived*/, typename F> +auto method_adaptor(F &&f) -> decltype(std::forward<F>(f)) { return std::forward<F>(f); } + +template <typename Derived, typename Return, typename Class, typename... Args> +auto method_adaptor(Return (Class::*pmf)(Args...)) -> Return (Derived::*)(Args...) { return pmf; } + +template <typename Derived, typename Return, typename Class, typename... Args> +auto method_adaptor(Return (Class::*pmf)(Args...) const) -> Return (Derived::*)(Args...) const { return pmf; } + template <typename type_, typename... options> class class_ : public detail::generic_type { template <typename T> using is_holder = detail::is_holder_type<type_, T>; - template <typename T> using is_subtype = detail::bool_constant<std::is_base_of<type_, T>::value && !std::is_same<T, type_>::value>; - template <typename T> using is_base = detail::bool_constant<std::is_base_of<T, type_>::value && !std::is_same<T, type_>::value>; + template <typename T> using is_subtype = detail::is_strict_base_of<type_, T>; + template <typename T> using is_base = detail::is_strict_base_of<T, type_>; // struct instead of using here to help MSVC: template <typename T> struct is_valid_class_option : detail::any_of<is_holder<T>, is_subtype<T>, is_base<T>> {}; public: using type = type_; - using type_alias = detail::first_of_t<is_subtype, void, options...>; + using type_alias = detail::exactly_one_t<is_subtype, void, options...>; constexpr static bool has_alias = !std::is_void<type_alias>::value; - using holder_type = detail::first_of_t<is_holder, std::unique_ptr<type>, options...>; - using instance_type = detail::instance<type, holder_type>; + using holder_type = detail::exactly_one_t<is_holder, std::unique_ptr<type>, options...>; static_assert(detail::all_of<is_valid_class_option<options>...>::value, "Unknown/invalid class_ template parameters provided"); + static_assert(!has_alias || std::is_polymorphic<type>::value, + "Cannot use an alias class with a non-polymorphic type"); + PYBIND11_OBJECT(class_, generic_type, PyType_Check) template <typename... Extra> @@ -913,16 +1051,15 @@ public: record.name = name; record.type = &typeid(type); record.type_size = sizeof(conditional_t<has_alias, type_alias, type>); - record.instance_size = sizeof(instance_type); - record.init_holder = init_holder; + record.holder_size = sizeof(holder_type); + record.init_instance = init_instance; record.dealloc = dealloc; record.default_holder = std::is_same<holder_type, std::unique_ptr<type>>::value; set_operator_new<type>(&record); /* Register base classes specified via template arguments to class_, if any */ - bool unused[] = { (add_base<options>(record), false)..., false }; - (void) unused; + PYBIND11_EXPAND_SIDE_EFFECTS(add_base<options>(record)); /* Process optional arguments, if any */ process_attributes<Extra...>::init(extra..., &record); @@ -930,14 +1067,14 @@ public: generic_type::initialize(record); if (has_alias) { - auto &instances = get_internals().registered_types_cpp; + auto &instances = record.module_local ? registered_local_types_cpp() : get_internals().registered_types_cpp; instances[std::type_index(typeid(type_alias))] = instances[std::type_index(typeid(type))]; } } template <typename Base, detail::enable_if_t<is_base<Base>::value, int> = 0> static void add_base(detail::type_record &rec) { - rec.add_base(&typeid(Base), [](void *src) -> void * { + rec.add_base(typeid(Base), [](void *src) -> void * { return static_cast<Base *>(reinterpret_cast<type *>(src)); }); } @@ -947,7 +1084,7 @@ public: template <typename Func, typename... Extra> class_ &def(const char *name_, Func&& f, const Extra&... extra) { - cpp_function cf(std::forward<Func>(f), name(name_), is_method(*this), + cpp_function cf(method_adaptor<type>(std::forward<Func>(f)), name(name_), is_method(*this), sibling(getattr(*this, name_, none())), extra...); attr(cf.name()) = cf; return *this; @@ -976,17 +1113,29 @@ public: } template <typename... Args, typename... Extra> - class_ &def(const detail::init<Args...> &init, const Extra&... extra) { + class_ &def(const detail::initimpl::constructor<Args...> &init, const Extra&... extra) { init.execute(*this, extra...); return *this; } template <typename... Args, typename... Extra> - class_ &def(const detail::init_alias<Args...> &init, const Extra&... extra) { + class_ &def(const detail::initimpl::alias_constructor<Args...> &init, const Extra&... extra) { init.execute(*this, extra...); return *this; } + template <typename... Args, typename... Extra> + class_ &def(detail::initimpl::factory<Args...> &&init, const Extra&... extra) { + std::move(init).execute(*this, extra...); + return *this; + } + + template <typename... Args, typename... Extra> + class_ &def(detail::initimpl::pickle_factory<Args...> &&pf, const Extra &...extra) { + std::move(pf).execute(*this, extra...); + return *this; + } + template <typename Func> class_& def_buffer(Func &&func) { struct capture { Func func; }; capture *ptr = new capture { std::forward<Func>(func) }; @@ -999,17 +1148,29 @@ public: return *this; } + template <typename Return, typename Class, typename... Args> + class_ &def_buffer(Return (Class::*func)(Args...)) { + return def_buffer([func] (type &obj) { return (obj.*func)(); }); + } + + template <typename Return, typename Class, typename... Args> + class_ &def_buffer(Return (Class::*func)(Args...) const) { + return def_buffer([func] (const type &obj) { return (obj.*func)(); }); + } + template <typename C, typename D, typename... Extra> class_ &def_readwrite(const char *name, D C::*pm, const Extra&... extra) { - cpp_function fget([pm](const C &c) -> const D &{ return c.*pm; }, is_method(*this)), - fset([pm](C &c, const D &value) { c.*pm = value; }, is_method(*this)); + static_assert(std::is_base_of<C, type>::value, "def_readwrite() requires a class member (or base class member)"); + cpp_function fget([pm](const type &c) -> const D &{ return c.*pm; }, is_method(*this)), + fset([pm](type &c, const D &value) { c.*pm = value; }, is_method(*this)); def_property(name, fget, fset, return_value_policy::reference_internal, extra...); return *this; } template <typename C, typename D, typename... Extra> class_ &def_readonly(const char *name, const D C::*pm, const Extra& ...extra) { - cpp_function fget([pm](const C &c) -> const D &{ return c.*pm; }, is_method(*this)); + static_assert(std::is_base_of<C, type>::value, "def_readonly() requires a class member (or base class member)"); + cpp_function fget([pm](const type &c) -> const D &{ return c.*pm; }, is_method(*this)); def_property_readonly(name, fget, return_value_policy::reference_internal, extra...); return *this; } @@ -1032,7 +1193,8 @@ public: /// Uses return_value_policy::reference_internal by default template <typename Getter, typename... Extra> class_ &def_property_readonly(const char *name, const Getter &fget, const Extra& ...extra) { - return def_property_readonly(name, cpp_function(fget), return_value_policy::reference_internal, extra...); + return def_property_readonly(name, cpp_function(method_adaptor<type>(fget)), + return_value_policy::reference_internal, extra...); } /// Uses cpp_function's return_value_policy by default @@ -1054,9 +1216,14 @@ public: } /// Uses return_value_policy::reference_internal by default + template <typename Getter, typename Setter, typename... Extra> + class_ &def_property(const char *name, const Getter &fget, const Setter &fset, const Extra& ...extra) { + return def_property(name, fget, cpp_function(method_adaptor<type>(fset)), extra...); + } template <typename Getter, typename... Extra> class_ &def_property(const char *name, const Getter &fget, const cpp_function &fset, const Extra& ...extra) { - return def_property(name, cpp_function(fget), fset, return_value_policy::reference_internal, extra...); + return def_property(name, cpp_function(method_adaptor<type>(fget)), fset, + return_value_policy::reference_internal, extra...); } /// Uses cpp_function's return_value_policy by default @@ -1096,51 +1263,68 @@ public: private: /// Initialize holder object, variant 1: object derives from enable_shared_from_this template <typename T> - static void init_holder_helper(instance_type *inst, const holder_type * /* unused */, const std::enable_shared_from_this<T> * /* dummy */) { + static void init_holder(detail::instance *inst, detail::value_and_holder &v_h, + const holder_type * /* unused */, const std::enable_shared_from_this<T> * /* dummy */) { try { - new (&inst->holder) holder_type(std::static_pointer_cast<typename holder_type::element_type>(inst->value->shared_from_this())); - inst->holder_constructed = true; - } catch (const std::bad_weak_ptr &) { - if (inst->owned) { - new (&inst->holder) holder_type(inst->value); - inst->holder_constructed = true; + auto sh = std::dynamic_pointer_cast<typename holder_type::element_type>( + v_h.value_ptr<type>()->shared_from_this()); + if (sh) { + new (&v_h.holder<holder_type>()) holder_type(std::move(sh)); + v_h.set_holder_constructed(); } + } catch (const std::bad_weak_ptr &) {} + + if (!v_h.holder_constructed() && inst->owned) { + new (&v_h.holder<holder_type>()) holder_type(v_h.value_ptr<type>()); + v_h.set_holder_constructed(); } } - static void init_holder_from_existing(instance_type *inst, const holder_type *holder_ptr, - std::true_type /*is_copy_constructible*/) { - new (&inst->holder) holder_type(*holder_ptr); + static void init_holder_from_existing(const detail::value_and_holder &v_h, + const holder_type *holder_ptr, std::true_type /*is_copy_constructible*/) { + new (&v_h.holder<holder_type>()) holder_type(*reinterpret_cast<const holder_type *>(holder_ptr)); } - static void init_holder_from_existing(instance_type *inst, const holder_type *holder_ptr, - std::false_type /*is_copy_constructible*/) { - new (&inst->holder) holder_type(std::move(*const_cast<holder_type *>(holder_ptr))); + static void init_holder_from_existing(const detail::value_and_holder &v_h, + const holder_type *holder_ptr, std::false_type /*is_copy_constructible*/) { + new (&v_h.holder<holder_type>()) holder_type(std::move(*const_cast<holder_type *>(holder_ptr))); } /// Initialize holder object, variant 2: try to construct from existing holder object, if possible - static void init_holder_helper(instance_type *inst, const holder_type *holder_ptr, const void * /* dummy */) { + static void init_holder(detail::instance *inst, detail::value_and_holder &v_h, + const holder_type *holder_ptr, const void * /* dummy -- not enable_shared_from_this<T>) */) { if (holder_ptr) { - init_holder_from_existing(inst, holder_ptr, std::is_copy_constructible<holder_type>()); - inst->holder_constructed = true; + init_holder_from_existing(v_h, holder_ptr, std::is_copy_constructible<holder_type>()); + v_h.set_holder_constructed(); } else if (inst->owned || detail::always_construct_holder<holder_type>::value) { - new (&inst->holder) holder_type(inst->value); - inst->holder_constructed = true; + new (&v_h.holder<holder_type>()) holder_type(v_h.value_ptr<type>()); + v_h.set_holder_constructed(); } } - /// Initialize holder object of an instance, possibly given a pointer to an existing holder - static void init_holder(PyObject *inst_, const void *holder_ptr) { - auto inst = (instance_type *) inst_; - init_holder_helper(inst, (const holder_type *) holder_ptr, inst->value); + /// Performs instance initialization including constructing a holder and registering the known + /// instance. Should be called as soon as the `type` value_ptr is set for an instance. Takes an + /// optional pointer to an existing holder to use; if not specified and the instance is + /// `.owned`, a new holder will be constructed to manage the value pointer. + static void init_instance(detail::instance *inst, const void *holder_ptr) { + auto v_h = inst->get_value_and_holder(detail::get_type_info(typeid(type))); + if (!v_h.instance_registered()) { + register_instance(inst, v_h.value_ptr(), v_h.type); + v_h.set_instance_registered(); + } + init_holder(inst, v_h, (const holder_type *) holder_ptr, v_h.value_ptr<type>()); } - static void dealloc(PyObject *inst_) { - instance_type *inst = (instance_type *) inst_; - if (inst->holder_constructed) - inst->holder.~holder_type(); - else if (inst->owned) - detail::call_operator_delete(inst->value); + /// Deallocates an instance; via holder, if constructed; otherwise via operator delete. + static void dealloc(detail::value_and_holder &v_h) { + if (v_h.holder_constructed()) { + v_h.holder<holder_type>().~holder_type(); + v_h.set_holder_constructed(false); + } + else { + detail::call_operator_delete(v_h.value_ptr<type>(), v_h.type->type_size); + } + v_h.value_ptr() = nullptr; } static detail::function_record *get_function_record(handle h) { @@ -1150,21 +1334,42 @@ private: } }; +/// Binds an existing constructor taking arguments Args... +template <typename... Args> detail::initimpl::constructor<Args...> init() { return {}; } +/// Like `init<Args...>()`, but the instance is always constructed through the alias class (even +/// when not inheriting on the Python side). +template <typename... Args> detail::initimpl::alias_constructor<Args...> init_alias() { return {}; } + +/// Binds a factory function as a constructor +template <typename Func, typename Ret = detail::initimpl::factory<Func>> +Ret init(Func &&f) { return {std::forward<Func>(f)}; } + +/// Dual-argument factory function: the first function is called when no alias is needed, the second +/// when an alias is needed (i.e. due to python-side inheritance). Arguments must be identical. +template <typename CFunc, typename AFunc, typename Ret = detail::initimpl::factory<CFunc, AFunc>> +Ret init(CFunc &&c, AFunc &&a) { + return {std::forward<CFunc>(c), std::forward<AFunc>(a)}; +} + +/// Binds pickling functions `__getstate__` and `__setstate__` and ensures that the type +/// returned by `__getstate__` is the same as the argument accepted by `__setstate__`. +template <typename GetState, typename SetState> +detail::initimpl::pickle_factory<GetState, SetState> pickle(GetState &&g, SetState &&s) { + return {std::forward<GetState>(g), std::forward<SetState>(s)}; +} + /// Binds C++ enumerations and enumeration classes to Python template <typename Type> class enum_ : public class_<Type> { public: using class_<Type>::def; using class_<Type>::def_property_readonly_static; using Scalar = typename std::underlying_type<Type>::type; - template <typename T> using arithmetic_tag = std::is_same<T, arithmetic>; template <typename... Extra> enum_(const handle &scope, const char *name, const Extra&... extra) : class_<Type>(scope, name, extra...), m_entries(), m_parent(scope) { - constexpr bool is_arithmetic = - !std::is_same<detail::first_of_t<arithmetic_tag, void, Extra...>, - void>::value; + constexpr bool is_arithmetic = detail::any_of<std::is_same<arithmetic, Extra>...>::value; auto m_entries_ptr = m_entries.inc_ref().ptr(); def("__repr__", [name, m_entries_ptr](Type value) -> pybind11::str { @@ -1180,8 +1385,11 @@ public: m[kv.first] = kv.second; return m; }, return_value_policy::copy); - def("__init__", [](Type& value, Scalar i) { value = (Type)i; }); + def(init([](Scalar i) { return static_cast<Type>(i); })); def("__int__", [](Type value) { return (Scalar) value; }); + #if PY_MAJOR_VERSION < 3 + def("__long__", [](Type value) { return (Scalar) value; }); + #endif def("__eq__", [](const Type &value, Type *value2) { return value2 && value == *value2; }); def("__ne__", [](const Type &value, Type *value2) { return !value2 || value != *value2; }); if (is_arithmetic) { @@ -1215,8 +1423,8 @@ public: } def("__hash__", [](const Type &value) { return (Scalar) value; }); // Pickling and unpickling -- needed for use with the 'multiprocessing' module - def("__getstate__", [](const Type &value) { return pybind11::make_tuple((Scalar) value); }); - def("__setstate__", [](Type &p, tuple t) { new (&p) Type((Type) t[0].cast<Scalar>()); }); + def(pickle([](const Type &value) { return pybind11::make_tuple((Scalar) value); }, + [](tuple t) { return static_cast<Type>(t[0].cast<Scalar>()); })); } /// Export enumeration entries into the parent scope @@ -1240,82 +1448,77 @@ private: }; NAMESPACE_BEGIN(detail) -template <typename... Args> struct init { - template <typename Class, typename... Extra, enable_if_t<!Class::has_alias, int> = 0> - static void execute(Class &cl, const Extra&... extra) { - using Base = typename Class::type; - /// Function which calls a specific C++ in-place constructor - cl.def("__init__", [](Base *self_, Args... args) { new (self_) Base(args...); }, extra...); - } - - template <typename Class, typename... Extra, - enable_if_t<Class::has_alias && - std::is_constructible<typename Class::type, Args...>::value, int> = 0> - static void execute(Class &cl, const Extra&... extra) { - using Base = typename Class::type; - using Alias = typename Class::type_alias; - handle cl_type = cl; - cl.def("__init__", [cl_type](handle self_, Args... args) { - if (self_.get_type() == cl_type) - new (self_.cast<Base *>()) Base(args...); - else - new (self_.cast<Alias *>()) Alias(args...); - }, extra...); - } - - template <typename Class, typename... Extra, - enable_if_t<Class::has_alias && - !std::is_constructible<typename Class::type, Args...>::value, int> = 0> - static void execute(Class &cl, const Extra&... extra) { - init_alias<Args...>::execute(cl, extra...); - } -}; -template <typename... Args> struct init_alias { - template <typename Class, typename... Extra, - enable_if_t<Class::has_alias && std::is_constructible<typename Class::type_alias, Args...>::value, int> = 0> - static void execute(Class &cl, const Extra&... extra) { - using Alias = typename Class::type_alias; - cl.def("__init__", [](Alias *self_, Args... args) { new (self_) Alias(args...); }, extra...); - } -}; inline void keep_alive_impl(handle nurse, handle patient) { - /* Clever approach based on weak references taken from Boost.Python */ if (!nurse || !patient) pybind11_fail("Could not activate keep_alive!"); if (patient.is_none() || nurse.is_none()) return; /* Nothing to keep alive or nothing to be kept alive by */ - cpp_function disable_lifesupport( - [patient](handle weakref) { patient.dec_ref(); weakref.dec_ref(); }); + auto tinfo = all_type_info(Py_TYPE(nurse.ptr())); + if (!tinfo.empty()) { + /* It's a pybind-registered type, so we can store the patient in the + * internal list. */ + add_patient(nurse.ptr(), patient.ptr()); + } + else { + /* Fall back to clever approach based on weak references taken from + * Boost.Python. This is not used for pybind-registered types because + * the objects can be destroyed out-of-order in a GC pass. */ + cpp_function disable_lifesupport( + [patient](handle weakref) { patient.dec_ref(); weakref.dec_ref(); }); - weakref wr(nurse, disable_lifesupport); + weakref wr(nurse, disable_lifesupport); - patient.inc_ref(); /* reference patient and leak the weak reference */ - (void) wr.release(); + patient.inc_ref(); /* reference patient and leak the weak reference */ + (void) wr.release(); + } } PYBIND11_NOINLINE inline void keep_alive_impl(size_t Nurse, size_t Patient, function_call &call, handle ret) { - keep_alive_impl( - Nurse == 0 ? ret : Nurse <= call.args.size() ? call.args[Nurse - 1] : handle(), - Patient == 0 ? ret : Patient <= call.args.size() ? call.args[Patient - 1] : handle() - ); + auto get_arg = [&](size_t n) { + if (n == 0) + return ret; + else if (n == 1 && call.init_self) + return call.init_self; + else if (n <= call.args.size()) + return call.args[n - 1]; + return handle(); + }; + + keep_alive_impl(get_arg(Nurse), get_arg(Patient)); +} + +inline std::pair<decltype(internals::registered_types_py)::iterator, bool> all_type_info_get_cache(PyTypeObject *type) { + auto res = get_internals().registered_types_py +#ifdef __cpp_lib_unordered_map_try_emplace + .try_emplace(type); +#else + .emplace(type, std::vector<detail::type_info *>()); +#endif + if (res.second) { + // New cache entry created; set up a weak reference to automatically remove it if the type + // gets destroyed: + weakref((PyObject *) type, cpp_function([type](handle wr) { + get_internals().registered_types_py.erase(type); + wr.dec_ref(); + })).release(); + } + + return res; } template <typename Iterator, typename Sentinel, bool KeyIterator, return_value_policy Policy> struct iterator_state { Iterator it; Sentinel end; - bool first; + bool first_or_done; }; NAMESPACE_END(detail) -template <typename... Args> detail::init<Args...> init() { return detail::init<Args...>(); } -template <typename... Args> detail::init_alias<Args...> init_alias() { return detail::init_alias<Args...>(); } - /// Makes a python iterator from a first and past-the-end C++ InputIterator. template <return_value_policy Policy = return_value_policy::reference_internal, typename Iterator, @@ -1326,20 +1529,22 @@ iterator make_iterator(Iterator first, Sentinel last, Extra &&... extra) { typedef detail::iterator_state<Iterator, Sentinel, false, Policy> state; if (!detail::get_type_info(typeid(state), false)) { - class_<state>(handle(), "iterator") + class_<state>(handle(), "iterator", pybind11::module_local()) .def("__iter__", [](state &s) -> state& { return s; }) .def("__next__", [](state &s) -> ValueType { - if (!s.first) + if (!s.first_or_done) ++s.it; else - s.first = false; - if (s.it == s.end) + s.first_or_done = false; + if (s.it == s.end) { + s.first_or_done = true; throw stop_iteration(); + } return *s.it; }, std::forward<Extra>(extra)..., Policy); } - return (iterator) cast(state { first, last, true }); + return cast(state{first, last, true}); } /// Makes an python iterator over the keys (`.first`) of a iterator over pairs from a @@ -1353,20 +1558,22 @@ iterator make_key_iterator(Iterator first, Sentinel last, Extra &&... extra) { typedef detail::iterator_state<Iterator, Sentinel, true, Policy> state; if (!detail::get_type_info(typeid(state), false)) { - class_<state>(handle(), "iterator") + class_<state>(handle(), "iterator", pybind11::module_local()) .def("__iter__", [](state &s) -> state& { return s; }) .def("__next__", [](state &s) -> KeyType { - if (!s.first) + if (!s.first_or_done) ++s.it; else - s.first = false; - if (s.it == s.end) + s.first_or_done = false; + if (s.it == s.end) { + s.first_or_done = true; throw stop_iteration(); + } return (*s.it).first; }, std::forward<Extra>(extra)..., Policy); } - return (iterator) cast(state { first, last, true }); + return cast(state{first, last, true}); } /// Makes an iterator over values of an stl container or other container supporting @@ -1384,7 +1591,16 @@ template <return_value_policy Policy = return_value_policy::reference_internal, } template <typename InputType, typename OutputType> void implicitly_convertible() { + struct set_flag { + bool &flag; + set_flag(bool &flag) : flag(flag) { flag = true; } + ~set_flag() { flag = false; } + }; auto implicit_caster = [](PyObject *obj, PyTypeObject *type) -> PyObject * { + static bool currently_used = false; + if (currently_used) // implicit conversions are non-reentrant + return nullptr; + set_flag flag_helper(currently_used); if (!detail::make_caster<InputType>().load(obj, false)) return nullptr; tuple args(1); @@ -1407,7 +1623,8 @@ void register_exception_translator(ExceptionTranslator&& translator) { std::forward<ExceptionTranslator>(translator)); } -/* Wrapper to generate a new Python exception type. +/** + * Wrapper to generate a new Python exception type. * * This should only be used with PyErr_SetString for now. * It is not (yet) possible to use as a py::base. @@ -1432,7 +1649,8 @@ public: } }; -/** Registers a Python exception in `m` of the given `name` and installs an exception translator to +/** + * Registers a Python exception in `m` of the given `name` and installs an exception translator to * translate the C++ exception to the created Python exception using the exceptions what() method. * This is intended for simple exception translations; for more complex translation, register the * exception object and translator directly. @@ -1589,9 +1807,13 @@ private: class gil_scoped_release { public: explicit gil_scoped_release(bool disassoc = false) : disassoc(disassoc) { + // `get_internals()` must be called here unconditionally in order to initialize + // `internals.tstate` for subsequent `gil_scoped_acquire` calls. Otherwise, an + // initialization race could occur as multiple threads try `gil_scoped_acquire`. + const auto &internals = detail::get_internals(); tstate = PyEval_SaveThread(); if (disassoc) { - auto key = detail::get_internals().tstate; + auto key = internals.tstate; #if PY_MAJOR_VERSION < 3 PyThread_delete_key_value(key); #else @@ -1635,9 +1857,11 @@ class gil_scoped_release { }; #endif error_already_set::~error_already_set() { - if (value) { + if (type) { gil_scoped_acquire gil; - clear(); + type.release().dec_ref(); + value.release().dec_ref(); + trace.release().dec_ref(); } } @@ -1690,7 +1914,7 @@ inline function get_type_overload(const void *this_ptr, const detail::type_info Py_file_input, d.ptr(), d.ptr()); if (result == nullptr) throw error_already_set(); - if ((handle) d["self"] == Py_None) + if (d["self"].is_none()) return function(); Py_DECREF(result); #endif @@ -1730,7 +1954,7 @@ template <class T> function get_overload(const T *this_ptr, const char *name) { #define PYBIND11_OVERLOAD_PURE(ret_type, cname, fn, ...) \ PYBIND11_OVERLOAD_PURE_NAME(ret_type, cname, #fn, fn, __VA_ARGS__) -NAMESPACE_END(pybind11) +NAMESPACE_END(PYBIND11_NAMESPACE) #if defined(_MSC_VER) # pragma warning(pop) diff --git a/ext/pybind11/include/pybind11/pytypes.h b/ext/pybind11/include/pybind11/pytypes.h index 900c57564..d7fa17775 100644 --- a/ext/pybind11/include/pybind11/pytypes.h +++ b/ext/pybind11/include/pybind11/pytypes.h @@ -1,5 +1,5 @@ /* - pybind11/typeid.h: Convenience wrapper classes for basic Python types + pybind11/pytypes.h: Convenience wrapper classes for basic Python types Copyright (c) 2016 Wenzel Jakob <wenzel.jakob@epfl.ch> @@ -9,11 +9,12 @@ #pragma once -#include "common.h" +#include "detail/common.h" +#include "buffer_info.h" #include <utility> #include <type_traits> -NAMESPACE_BEGIN(pybind11) +NAMESPACE_BEGIN(PYBIND11_NAMESPACE) /* A few forward declarations */ class handle; class object; @@ -43,7 +44,7 @@ using tuple_accessor = accessor<accessor_policies::tuple_item>; /// Tag and check to identify a class which implements the Python object API class pyobject_tag { }; -template <typename T> using is_pyobject = std::is_base_of<pyobject_tag, typename std::remove_reference<T>::type>; +template <typename T> using is_pyobject = std::is_base_of<pyobject_tag, remove_reference_t<T>>; /** \rst A mixin class which adds common functions to `handle`, `object` and various accessors. @@ -109,11 +110,16 @@ public: PYBIND11_DEPRECATED("call(...) was deprecated in favor of operator()(...)") object call(Args&&... args) const; + /// Equivalent to ``obj is other`` in Python. + bool is(object_api const& other) const { return derived().ptr() == other.derived().ptr(); } /// Equivalent to ``obj is None`` in Python. bool is_none() const { return derived().ptr() == Py_None; } PYBIND11_DEPRECATED("Use py::str(obj) instead") pybind11::str str() const; + /// Get or set the object's docstring, i.e. ``obj.__doc__``. + str_attr_accessor doc() const; + /// Return the object's current reference count int ref_count() const { return static_cast<int>(Py_REFCNT(derived().ptr())); } /// Return a handle to the Python type object underlying the instance @@ -166,10 +172,12 @@ public: /// Return ``true`` when the `handle` wraps a valid Python object explicit operator bool() const { return m_ptr != nullptr; } /** \rst - Check that the underlying pointers are the same. + Deprecated: Check that the underlying pointers are the same. Equivalent to ``obj1 is obj2`` in Python. \endrst */ + PYBIND11_DEPRECATED("Use obj1.is(obj2) instead") bool operator==(const handle &h) const { return m_ptr == h.m_ptr; } + PYBIND11_DEPRECATED("Use !obj1.is(obj2) instead") bool operator!=(const handle &h) const { return m_ptr != h.m_ptr; } PYBIND11_DEPRECATED("Use handle::operator bool() instead") bool check() const { return m_ptr != nullptr; } @@ -234,8 +242,8 @@ public: protected: // Tags for choosing constructors from raw PyObject * - struct borrowed_t { }; static constexpr borrowed_t borrowed{}; - struct stolen_t { }; static constexpr stolen_t stolen{}; + struct borrowed_t { }; + struct stolen_t { }; template <typename T> friend T reinterpret_borrow(handle); template <typename T> friend T reinterpret_steal(handle); @@ -259,7 +267,7 @@ public: // or py::tuple t = reinterpret_borrow<py::tuple>(p); // <-- `p` must be already be a `tuple` \endrst */ -template <typename T> T reinterpret_borrow(handle h) { return {h, object::borrowed}; } +template <typename T> T reinterpret_borrow(handle h) { return {h, object::borrowed_t{}}; } /** \rst Like `reinterpret_borrow`, but steals the reference. @@ -269,7 +277,43 @@ template <typename T> T reinterpret_borrow(handle h) { return {h, object::borrow PyObject *p = PyObject_Str(obj); py::str s = reinterpret_steal<py::str>(p); // <-- `p` must be already be a `str` \endrst */ -template <typename T> T reinterpret_steal(handle h) { return {h, object::stolen}; } +template <typename T> T reinterpret_steal(handle h) { return {h, object::stolen_t{}}; } + +NAMESPACE_BEGIN(detail) +inline std::string error_string(); +NAMESPACE_END(detail) + +/// Fetch and hold an error which was already set in Python. An instance of this is typically +/// thrown to propagate python-side errors back through C++ which can either be caught manually or +/// else falls back to the function dispatcher (which then raises the captured error back to +/// python). +class error_already_set : public std::runtime_error { +public: + /// Constructs a new exception from the current Python error indicator, if any. The current + /// Python error indicator will be cleared. + error_already_set() : std::runtime_error(detail::error_string()) { + PyErr_Fetch(&type.ptr(), &value.ptr(), &trace.ptr()); + } + + inline ~error_already_set(); + + /// Give the currently-held error back to Python, if any. If there is currently a Python error + /// already set it is cleared first. After this call, the current object no longer stores the + /// error variables (but the `.what()` string is still available). + void restore() { PyErr_Restore(type.release().ptr(), value.release().ptr(), trace.release().ptr()); } + + // Does nothing; provided for backwards compatibility. + PYBIND11_DEPRECATED("Use of error_already_set.clear() is deprecated") + void clear() {} + + /// Check if the currently trapped error type matches the given Python exception class (or a + /// subclass thereof). May also be passed a tuple to search for any exception class matches in + /// the given tuple. + bool matches(handle ex) const { return PyErr_GivenExceptionMatches(ex.ptr(), type.ptr()); } + +private: + object type, value, trace; +}; /** \defgroup python_builtins _ Unless stated otherwise, the following C++ functions behave the same @@ -346,6 +390,13 @@ inline void setattr(handle obj, handle name, handle value) { inline void setattr(handle obj, const char *name, handle value) { if (PyObject_SetAttrString(obj.ptr(), name, value.ptr()) != 0) { throw error_already_set(); } } + +inline ssize_t hash(handle obj) { + auto h = PyObject_Hash(obj.ptr()); + if (h == -1) { throw error_already_set(); } + return h; +} + /// @} python_builtins NAMESPACE_BEGIN(detail) @@ -354,6 +405,7 @@ inline handle get_function(handle value) { #if PY_MAJOR_VERSION >= 3 if (PyInstanceMethod_Check(value.ptr())) value = PyInstanceMethod_GET_FUNCTION(value.ptr()); + else #endif if (PyMethod_Check(value.ptr())) value = PyMethod_GET_FUNCTION(value.ptr()); @@ -379,6 +431,8 @@ class accessor : public object_api<accessor<Policy>> { public: accessor(handle obj, key_type key) : obj(obj), key(std::move(key)) { } + accessor(const accessor &) = default; + accessor(accessor &&) = default; // accessor overload required to override default assignment operator (templates are not allowed // to replace default compiler-generated assignments). @@ -674,9 +728,9 @@ NAMESPACE_END(detail) #define PYBIND11_OBJECT_COMMON(Name, Parent, CheckFun) \ public: \ PYBIND11_DEPRECATED("Use reinterpret_borrow<"#Name">() or reinterpret_steal<"#Name">()") \ - Name(handle h, bool is_borrowed) : Parent(is_borrowed ? Parent(h, borrowed) : Parent(h, stolen)) { } \ - Name(handle h, borrowed_t) : Parent(h, borrowed) { } \ - Name(handle h, stolen_t) : Parent(h, stolen) { } \ + Name(handle h, bool is_borrowed) : Parent(is_borrowed ? Parent(h, borrowed_t{}) : Parent(h, stolen_t{})) { } \ + Name(handle h, borrowed_t) : Parent(h, borrowed_t{}) { } \ + Name(handle h, stolen_t) : Parent(h, stolen_t{}) { } \ PYBIND11_DEPRECATED("Use py::isinstance<py::python_type>(obj) instead") \ bool check() const { return m_ptr != nullptr && (bool) CheckFun(m_ptr); } \ static bool check_(handle h) { return h.ptr() != nullptr && CheckFun(h.ptr()); } @@ -684,7 +738,14 @@ NAMESPACE_END(detail) #define PYBIND11_OBJECT_CVT(Name, Parent, CheckFun, ConvertFun) \ PYBIND11_OBJECT_COMMON(Name, Parent, CheckFun) \ /* This is deliberately not 'explicit' to allow implicit conversion from object: */ \ - Name(const object &o) : Parent(ConvertFun(o.ptr()), stolen) { if (!m_ptr) throw error_already_set(); } + Name(const object &o) \ + : Parent(check_(o) ? o.inc_ref().ptr() : ConvertFun(o.ptr()), stolen_t{}) \ + { if (!m_ptr) throw error_already_set(); } \ + Name(object &&o) \ + : Parent(check_(o) ? o.release().ptr() : ConvertFun(o.ptr()), stolen_t{}) \ + { if (!m_ptr) throw error_already_set(); } \ + template <typename Policy_> \ + Name(const ::pybind11::detail::accessor<Policy_> &a) : Name(object(a)) { } #define PYBIND11_OBJECT(Name, Parent, CheckFun) \ PYBIND11_OBJECT_COMMON(Name, Parent, CheckFun) \ @@ -778,13 +839,13 @@ public: PYBIND11_OBJECT_CVT(str, object, detail::PyUnicode_Check_Permissive, raw_str) str(const char *c, size_t n) - : object(PyUnicode_FromStringAndSize(c, (ssize_t) n), stolen) { + : object(PyUnicode_FromStringAndSize(c, (ssize_t) n), stolen_t{}) { if (!m_ptr) pybind11_fail("Could not allocate string object!"); } // 'explicit' is explicitly omitted from the following constructors to allow implicit conversion to py::str from C++ string-like objects str(const char *c = "") - : object(PyUnicode_FromString(c), stolen) { + : object(PyUnicode_FromString(c), stolen_t{}) { if (!m_ptr) pybind11_fail("Could not allocate string object!"); } @@ -796,7 +857,7 @@ public: Return a string representation of the object. This is analogous to the ``str()`` function in Python. \endrst */ - explicit str(handle h) : object(raw_str(h.ptr()), stolen) { } + explicit str(handle h) : object(raw_str(h.ptr()), stolen_t{}) { } operator std::string() const { object temp = *this; @@ -846,12 +907,12 @@ public: // Allow implicit conversion: bytes(const char *c = "") - : object(PYBIND11_BYTES_FROM_STRING(c), stolen) { + : object(PYBIND11_BYTES_FROM_STRING(c), stolen_t{}) { if (!m_ptr) pybind11_fail("Could not allocate bytes object!"); } bytes(const char *c, size_t n) - : object(PYBIND11_BYTES_FROM_STRING_AND_SIZE(c, (ssize_t) n), stolen) { + : object(PYBIND11_BYTES_FROM_STRING_AND_SIZE(c, (ssize_t) n), stolen_t{}) { if (!m_ptr) pybind11_fail("Could not allocate bytes object!"); } @@ -900,15 +961,15 @@ inline str::str(const bytes& b) { class none : public object { public: PYBIND11_OBJECT(none, object, detail::PyNone_Check) - none() : object(Py_None, borrowed) { } + none() : object(Py_None, borrowed_t{}) { } }; class bool_ : public object { public: PYBIND11_OBJECT_CVT(bool_, object, PyBool_Check, raw_bool) - bool_() : object(Py_False, borrowed) { } + bool_() : object(Py_False, borrowed_t{}) { } // Allow implicit conversion from and to `bool`: - bool_(bool value) : object(value ? Py_True : Py_False, borrowed) { } + bool_(bool value) : object(value ? Py_True : Py_False, borrowed_t{}) { } operator bool() const { return m_ptr && PyLong_AsLong(m_ptr) != 0; } private: @@ -920,10 +981,32 @@ private: } }; +NAMESPACE_BEGIN(detail) +// Converts a value to the given unsigned type. If an error occurs, you get back (Unsigned) -1; +// otherwise you get back the unsigned long or unsigned long long value cast to (Unsigned). +// (The distinction is critically important when casting a returned -1 error value to some other +// unsigned type: (A)-1 != (B)-1 when A and B are unsigned types of different sizes). +template <typename Unsigned> +Unsigned as_unsigned(PyObject *o) { + if (sizeof(Unsigned) <= sizeof(unsigned long) +#if PY_VERSION_HEX < 0x03000000 + || PyInt_Check(o) +#endif + ) { + unsigned long v = PyLong_AsUnsignedLong(o); + return v == (unsigned long) -1 && PyErr_Occurred() ? (Unsigned) -1 : (Unsigned) v; + } + else { + unsigned long long v = PyLong_AsUnsignedLongLong(o); + return v == (unsigned long long) -1 && PyErr_Occurred() ? (Unsigned) -1 : (Unsigned) v; + } +} +NAMESPACE_END(detail) + class int_ : public object { public: PYBIND11_OBJECT_CVT(int_, object, PYBIND11_LONG_CHECK, PyNumber_Long) - int_() : object(PyLong_FromLong(0), stolen) { } + int_() : object(PyLong_FromLong(0), stolen_t{}) { } // Allow implicit conversion from C++ integral types: template <typename T, detail::enable_if_t<std::is_integral<T>::value, int> = 0> @@ -945,17 +1028,11 @@ public: template <typename T, detail::enable_if_t<std::is_integral<T>::value, int> = 0> operator T() const { - if (sizeof(T) <= sizeof(long)) { - if (std::is_signed<T>::value) - return (T) PyLong_AsLong(m_ptr); - else - return (T) PyLong_AsUnsignedLong(m_ptr); - } else { - if (std::is_signed<T>::value) - return (T) PYBIND11_LONG_AS_LONGLONG(m_ptr); - else - return (T) PYBIND11_LONG_AS_UNSIGNED_LONGLONG(m_ptr); - } + return std::is_unsigned<T>::value + ? detail::as_unsigned<T>(m_ptr) + : sizeof(T) <= sizeof(long) + ? (T) PyLong_AsLong(m_ptr) + : (T) PYBIND11_LONG_AS_LONGLONG(m_ptr); } }; @@ -963,10 +1040,10 @@ class float_ : public object { public: PYBIND11_OBJECT_CVT(float_, object, PyFloat_Check, PyNumber_Float) // Allow implicit conversion from float/double: - float_(float value) : object(PyFloat_FromDouble((double) value), stolen) { + float_(float value) : object(PyFloat_FromDouble((double) value), stolen_t{}) { if (!m_ptr) pybind11_fail("Could not allocate float object!"); } - float_(double value = .0) : object(PyFloat_FromDouble((double) value), stolen) { + float_(double value = .0) : object(PyFloat_FromDouble((double) value), stolen_t{}) { if (!m_ptr) pybind11_fail("Could not allocate float object!"); } operator float() const { return (float) PyFloat_AsDouble(m_ptr); } @@ -977,7 +1054,7 @@ class weakref : public object { public: PYBIND11_OBJECT_DEFAULT(weakref, object, PyWeakref_Check) explicit weakref(handle obj, handle callback = {}) - : object(PyWeakref_NewRef(obj.ptr(), callback.ptr()), stolen) { + : object(PyWeakref_NewRef(obj.ptr(), callback.ptr()), stolen_t{}) { if (!m_ptr) pybind11_fail("Could not allocate weak reference!"); } }; @@ -1003,17 +1080,17 @@ class capsule : public object { public: PYBIND11_OBJECT_DEFAULT(capsule, object, PyCapsule_CheckExact) PYBIND11_DEPRECATED("Use reinterpret_borrow<capsule>() or reinterpret_steal<capsule>()") - capsule(PyObject *ptr, bool is_borrowed) : object(is_borrowed ? object(ptr, borrowed) : object(ptr, stolen)) { } + capsule(PyObject *ptr, bool is_borrowed) : object(is_borrowed ? object(ptr, borrowed_t{}) : object(ptr, stolen_t{})) { } - explicit capsule(const void *value) - : object(PyCapsule_New(const_cast<void *>(value), nullptr, nullptr), stolen) { + explicit capsule(const void *value, const char *name = nullptr, void (*destructor)(PyObject *) = nullptr) + : object(PyCapsule_New(const_cast<void *>(value), name, destructor), stolen_t{}) { if (!m_ptr) pybind11_fail("Could not allocate capsule object!"); } PYBIND11_DEPRECATED("Please pass a destructor that takes a void pointer as input") capsule(const void *value, void (*destruct)(PyObject *)) - : object(PyCapsule_New(const_cast<void*>(value), nullptr, destruct), stolen) { + : object(PyCapsule_New(const_cast<void*>(value), nullptr, destruct), stolen_t{}) { if (!m_ptr) pybind11_fail("Could not allocate capsule object!"); } @@ -1043,16 +1120,19 @@ public: } template <typename T> operator T *() const { - T * result = static_cast<T *>(PyCapsule_GetPointer(m_ptr, nullptr)); + auto name = this->name(); + T * result = static_cast<T *>(PyCapsule_GetPointer(m_ptr, name)); if (!result) pybind11_fail("Unable to extract capsule contents!"); return result; } + + const char *name() const { return PyCapsule_GetName(m_ptr); } }; class tuple : public object { public: PYBIND11_OBJECT_CVT(tuple, object, PyTuple_Check, PySequence_Tuple) - explicit tuple(size_t size = 0) : object(PyTuple_New((ssize_t) size), stolen) { + explicit tuple(size_t size = 0) : object(PyTuple_New((ssize_t) size), stolen_t{}) { if (!m_ptr) pybind11_fail("Could not allocate tuple object!"); } size_t size() const { return (size_t) PyTuple_Size(m_ptr); } @@ -1064,7 +1144,7 @@ public: class dict : public object { public: PYBIND11_OBJECT_CVT(dict, object, PyDict_Check, raw_dict) - dict() : object(PyDict_New(), stolen) { + dict() : object(PyDict_New(), stolen_t{}) { if (!m_ptr) pybind11_fail("Could not allocate dict object!"); } template <typename... Args, @@ -1101,7 +1181,7 @@ public: class list : public object { public: PYBIND11_OBJECT_CVT(list, object, PyList_Check, PySequence_List) - explicit list(size_t size = 0) : object(PyList_New((ssize_t) size), stolen) { + explicit list(size_t size = 0) : object(PyList_New((ssize_t) size), stolen_t{}) { if (!m_ptr) pybind11_fail("Could not allocate list object!"); } size_t size() const { return (size_t) PyList_Size(m_ptr); } @@ -1119,7 +1199,7 @@ class kwargs : public dict { PYBIND11_OBJECT_DEFAULT(kwargs, dict, PyDict_Check) class set : public object { public: PYBIND11_OBJECT_CVT(set, object, PySet_Check, PySet_New) - set() : object(PySet_New(nullptr), stolen) { + set() : object(PySet_New(nullptr), stolen_t{}) { if (!m_ptr) pybind11_fail("Could not allocate set object!"); } size_t size() const { return (size_t) PySet_Size(m_ptr); } @@ -1132,10 +1212,13 @@ public: class function : public object { public: PYBIND11_OBJECT_DEFAULT(function, object, PyCallable_Check) - bool is_cpp_function() const { + handle cpp_function() const { handle fun = detail::get_function(m_ptr); - return fun && PyCFunction_Check(fun.ptr()); + if (fun && PyCFunction_Check(fun.ptr())) + return fun; + return handle(); } + bool is_cpp_function() const { return (bool) cpp_function(); } }; class buffer : public object { @@ -1146,8 +1229,10 @@ public: int flags = PyBUF_STRIDES | PyBUF_FORMAT; if (writable) flags |= PyBUF_WRITABLE; Py_buffer *view = new Py_buffer(); - if (PyObject_GetBuffer(m_ptr, view, flags) != 0) + if (PyObject_GetBuffer(m_ptr, view, flags) != 0) { + delete view; throw error_already_set(); + } return buffer_info(view); } }; @@ -1160,15 +1245,15 @@ public: static std::vector<Py_ssize_t> py_strides { }; static std::vector<Py_ssize_t> py_shape { }; buf.buf = info.ptr; - buf.itemsize = (Py_ssize_t) info.itemsize; + buf.itemsize = info.itemsize; buf.format = const_cast<char *>(info.format.c_str()); buf.ndim = (int) info.ndim; - buf.len = (Py_ssize_t) info.size; + buf.len = info.size; py_strides.clear(); py_shape.clear(); - for (size_t i = 0; i < info.ndim; ++i) { - py_strides.push_back((Py_ssize_t) info.strides[i]); - py_shape.push_back((Py_ssize_t) info.shape[i]); + for (size_t i = 0; i < (size_t) info.ndim; ++i) { + py_strides.push_back(info.strides[i]); + py_shape.push_back(info.shape[i]); } buf.strides = py_strides.data(); buf.shape = py_shape.data(); @@ -1238,7 +1323,10 @@ template <typename D> pybind11::str object_api<D>::str() const { return pybind11::str(derived()); } template <typename D> +str_attr_accessor object_api<D>::doc() const { return attr("__doc__"); } + +template <typename D> handle object_api<D>::get_type() const { return (PyObject *) Py_TYPE(derived().ptr()); } NAMESPACE_END(detail) -NAMESPACE_END(pybind11) +NAMESPACE_END(PYBIND11_NAMESPACE) diff --git a/ext/pybind11/include/pybind11/stl.h b/ext/pybind11/include/pybind11/stl.h index 37b6bcde3..44abb8c6c 100644 --- a/ext/pybind11/include/pybind11/stl.h +++ b/ext/pybind11/include/pybind11/stl.h @@ -32,15 +32,36 @@ // std::experimental::optional (but not allowed in c++11 mode) # if defined(PYBIND11_CPP14) && __has_include(<experimental/optional>) # include <experimental/optional> -# if __cpp_lib_experimental_optional // just in case -# define PYBIND11_HAS_EXP_OPTIONAL 1 -# endif +# define PYBIND11_HAS_EXP_OPTIONAL 1 # endif +// std::variant +# if defined(PYBIND11_CPP17) && __has_include(<variant>) +# include <variant> +# define PYBIND11_HAS_VARIANT 1 +# endif +#elif defined(_MSC_VER) && defined(PYBIND11_CPP17) +# include <optional> +# include <variant> +# define PYBIND11_HAS_OPTIONAL 1 +# define PYBIND11_HAS_VARIANT 1 #endif -NAMESPACE_BEGIN(pybind11) +NAMESPACE_BEGIN(PYBIND11_NAMESPACE) NAMESPACE_BEGIN(detail) +/// Extracts an const lvalue reference or rvalue reference for U based on the type of T (e.g. for +/// forwarding a container element). Typically used indirect via forwarded_type(), below. +template <typename T, typename U> +using forwarded_type = conditional_t< + std::is_lvalue_reference<T>::value, remove_reference_t<U> &, remove_reference_t<U> &&>; + +/// Forwards a value U as rvalue or lvalue according to whether T is rvalue or lvalue; typically +/// used for forwarding a container's elements. +template <typename T, typename U> +forwarded_type<T, U> forward_like(U &&u) { + return std::forward<detail::forwarded_type<T, U>>(std::forward<U>(u)); +} + template <typename Type, typename Key> struct set_caster { using type = Type; using key_conv = make_caster<Key>; @@ -50,19 +71,20 @@ template <typename Type, typename Key> struct set_caster { return false; auto s = reinterpret_borrow<pybind11::set>(src); value.clear(); - key_conv conv; for (auto entry : s) { + key_conv conv; if (!conv.load(entry, convert)) return false; - value.insert(cast_op<Key>(conv)); + value.insert(cast_op<Key &&>(std::move(conv))); } return true; } - static handle cast(const type &src, return_value_policy policy, handle parent) { + template <typename T> + static handle cast(T &&src, return_value_policy policy, handle parent) { pybind11::set s; - for (auto const &value: src) { - auto value_ = reinterpret_steal<object>(key_conv::cast(value, policy, parent)); + for (auto &&value : src) { + auto value_ = reinterpret_steal<object>(key_conv::cast(forward_like<T>(value), policy, parent)); if (!value_ || !s.add(value_)) return handle(); } @@ -80,23 +102,24 @@ template <typename Type, typename Key, typename Value> struct map_caster { if (!isinstance<dict>(src)) return false; auto d = reinterpret_borrow<dict>(src); - key_conv kconv; - value_conv vconv; value.clear(); for (auto it : d) { + key_conv kconv; + value_conv vconv; if (!kconv.load(it.first.ptr(), convert) || !vconv.load(it.second.ptr(), convert)) return false; - value.emplace(cast_op<Key>(kconv), cast_op<Value>(vconv)); + value.emplace(cast_op<Key &&>(std::move(kconv)), cast_op<Value &&>(std::move(vconv))); } return true; } - static handle cast(const Type &src, return_value_policy policy, handle parent) { + template <typename T> + static handle cast(T &&src, return_value_policy policy, handle parent) { dict d; - for (auto const &kv: src) { - auto key = reinterpret_steal<object>(key_conv::cast(kv.first, policy, parent)); - auto value = reinterpret_steal<object>(value_conv::cast(kv.second, policy, parent)); + for (auto &&kv : src) { + auto key = reinterpret_steal<object>(key_conv::cast(forward_like<T>(kv.first), policy, parent)); + auto value = reinterpret_steal<object>(value_conv::cast(forward_like<T>(kv.second), policy, parent)); if (!key || !value) return handle(); d[key] = value; @@ -114,13 +137,13 @@ template <typename Type, typename Value> struct list_caster { if (!isinstance<sequence>(src)) return false; auto s = reinterpret_borrow<sequence>(src); - value_conv conv; value.clear(); reserve_maybe(s, &value); for (auto it : s) { + value_conv conv; if (!conv.load(it, convert)) return false; - value.push_back(cast_op<Value>(conv)); + value.push_back(cast_op<Value &&>(std::move(conv))); } return true; } @@ -132,11 +155,12 @@ private: void reserve_maybe(sequence, void *) { } public: - static handle cast(const Type &src, return_value_policy policy, handle parent) { + template <typename T> + static handle cast(T &&src, return_value_policy policy, handle parent) { list l(src.size()); size_t index = 0; - for (auto const &value: src) { - auto value_ = reinterpret_steal<object>(value_conv::cast(value, policy, parent)); + for (auto &&value : src) { + auto value_ = reinterpret_steal<object>(value_conv::cast(forward_like<T>(value), policy, parent)); if (!value_) return handle(); PyList_SET_ITEM(l.ptr(), (ssize_t) index++, value_.release().ptr()); // steals a reference @@ -175,21 +199,22 @@ public: auto l = reinterpret_borrow<list>(src); if (!require_size(l.size())) return false; - value_conv conv; size_t ctr = 0; for (auto it : l) { + value_conv conv; if (!conv.load(it, convert)) return false; - value[ctr++] = cast_op<Value>(conv); + value[ctr++] = cast_op<Value &&>(std::move(conv)); } return true; } - static handle cast(const ArrayType &src, return_value_policy policy, handle parent) { + template <typename T> + static handle cast(T &&src, return_value_policy policy, handle parent) { list l(src.size()); size_t index = 0; - for (auto const &value: src) { - auto value_ = reinterpret_steal<object>(value_conv::cast(value, policy, parent)); + for (auto &&value : src) { + auto value_ = reinterpret_steal<object>(value_conv::cast(forward_like<T>(value), policy, parent)); if (!value_) return handle(); PyList_SET_ITEM(l.ptr(), (ssize_t) index++, value_.release().ptr()); // steals a reference @@ -222,24 +247,24 @@ template <typename Key, typename Value, typename Hash, typename Equal, typename template<typename T> struct optional_caster { using value_conv = make_caster<typename T::value_type>; - static handle cast(const T& src, return_value_policy policy, handle parent) { + template <typename T_> + static handle cast(T_ &&src, return_value_policy policy, handle parent) { if (!src) return none().inc_ref(); - return value_conv::cast(*src, policy, parent); + return value_conv::cast(*std::forward<T_>(src), policy, parent); } bool load(handle src, bool convert) { if (!src) { return false; } else if (src.is_none()) { - value = {}; // nullopt - return true; + return true; // default-constructed value is already empty } value_conv inner_caster; if (!inner_caster.load(src, convert)) return false; - value.emplace(cast_op<typename T::value_type>(inner_caster)); + value.emplace(cast_op<typename T::value_type &&>(std::move(inner_caster))); return true; } @@ -262,6 +287,74 @@ template<> struct type_caster<std::experimental::nullopt_t> : public void_caster<std::experimental::nullopt_t> {}; #endif +/// Visit a variant and cast any found type to Python +struct variant_caster_visitor { + return_value_policy policy; + handle parent; + + using result_type = handle; // required by boost::variant in C++11 + + template <typename T> + result_type operator()(T &&src) const { + return make_caster<T>::cast(std::forward<T>(src), policy, parent); + } +}; + +/// Helper class which abstracts away variant's `visit` function. `std::variant` and similar +/// `namespace::variant` types which provide a `namespace::visit()` function are handled here +/// automatically using argument-dependent lookup. Users can provide specializations for other +/// variant-like classes, e.g. `boost::variant` and `boost::apply_visitor`. +template <template<typename...> class Variant> +struct visit_helper { + template <typename... Args> + static auto call(Args &&...args) -> decltype(visit(std::forward<Args>(args)...)) { + return visit(std::forward<Args>(args)...); + } +}; + +/// Generic variant caster +template <typename Variant> struct variant_caster; + +template <template<typename...> class V, typename... Ts> +struct variant_caster<V<Ts...>> { + static_assert(sizeof...(Ts) > 0, "Variant must consist of at least one alternative."); + + template <typename U, typename... Us> + bool load_alternative(handle src, bool convert, type_list<U, Us...>) { + auto caster = make_caster<U>(); + if (caster.load(src, convert)) { + value = cast_op<U>(caster); + return true; + } + return load_alternative(src, convert, type_list<Us...>{}); + } + + bool load_alternative(handle, bool, type_list<>) { return false; } + + bool load(handle src, bool convert) { + // Do a first pass without conversions to improve constructor resolution. + // E.g. `py::int_(1).cast<variant<double, int>>()` needs to fill the `int` + // slot of the variant. Without two-pass loading `double` would be filled + // because it appears first and a conversion is possible. + if (convert && load_alternative(src, false, type_list<Ts...>{})) + return true; + return load_alternative(src, convert, type_list<Ts...>{}); + } + + template <typename Variant> + static handle cast(Variant &&src, return_value_policy policy, handle parent) { + return visit_helper<V>::call(variant_caster_visitor{policy, parent}, + std::forward<Variant>(src)); + } + + using Type = V<Ts...>; + PYBIND11_TYPE_CASTER(Type, _("Union[") + detail::concat(make_caster<Ts>::name()...) + _("]")); +}; + +#ifdef PYBIND11_HAS_VARIANT +template <typename... Ts> +struct type_caster<std::variant<Ts...>> : variant_caster<std::variant<Ts...>> { }; +#endif NAMESPACE_END(detail) inline std::ostream &operator<<(std::ostream &os, const handle &obj) { @@ -269,7 +362,7 @@ inline std::ostream &operator<<(std::ostream &os, const handle &obj) { return os; } -NAMESPACE_END(pybind11) +NAMESPACE_END(PYBIND11_NAMESPACE) #if defined(_MSC_VER) #pragma warning(pop) diff --git a/ext/pybind11/include/pybind11/stl_bind.h b/ext/pybind11/include/pybind11/stl_bind.h index 897188220..7ef687878 100644 --- a/ext/pybind11/include/pybind11/stl_bind.h +++ b/ext/pybind11/include/pybind11/stl_bind.h @@ -9,13 +9,13 @@ #pragma once -#include "common.h" +#include "detail/common.h" #include "operators.h" #include <algorithm> #include <sstream> -NAMESPACE_BEGIN(pybind11) +NAMESPACE_BEGIN(PYBIND11_NAMESPACE) NAMESPACE_BEGIN(detail) /* SFINAE helper class used by 'is_comparable */ @@ -66,10 +66,7 @@ template <typename, typename, typename... Args> void vector_if_insertion_operato template <typename, typename, typename... Args> void vector_modifiers(const Args &...) { } template<typename Vector, typename Class_> -void vector_if_copy_constructible(enable_if_t< - std::is_copy_constructible<Vector>::value && - std::is_copy_constructible<typename Vector::value_type>::value, Class_> &cl) { - +void vector_if_copy_constructible(enable_if_t<is_copy_constructible<Vector>::value, Class_> &cl) { cl.def(init<const Vector &>(), "Copy constructor"); } @@ -113,7 +110,7 @@ void vector_if_equal_operator(enable_if_t<is_comparable<Vector>::value, Class_> // (Technically, some of these (pop and __delitem__) don't actually require copyability, but it seems // silly to allow deletion but not insertion, so include them here too.) template <typename Vector, typename Class_> -void vector_modifiers(enable_if_t<std::is_copy_constructible<typename Vector::value_type>::value, Class_> &cl) { +void vector_modifiers(enable_if_t<is_copy_constructible<typename Vector::value_type>::value, Class_> &cl) { using T = typename Vector::value_type; using SizeType = typename Vector::size_type; using DiffType = typename Vector::difference_type; @@ -123,21 +120,16 @@ void vector_modifiers(enable_if_t<std::is_copy_constructible<typename Vector::va arg("x"), "Add an item to the end of the list"); - cl.def("__init__", [](Vector &v, iterable it) { - new (&v) Vector(); - try { - v.reserve(len(it)); - for (handle h : it) - v.push_back(h.cast<T>()); - } catch (...) { - v.~Vector(); - throw; - } - }); + cl.def(init([](iterable it) { + auto v = std::unique_ptr<Vector>(new Vector()); + v->reserve(len(it)); + for (handle h : it) + v->push_back(h.cast<T>()); + return v.release(); + })); cl.def("extend", [](Vector &v, const Vector &src) { - v.reserve(v.size() + src.size()); v.insert(v.end(), src.begin(), src.end()); }, arg("L"), @@ -146,6 +138,8 @@ void vector_modifiers(enable_if_t<std::is_copy_constructible<typename Vector::va cl.def("insert", [](Vector &v, SizeType i, const T &x) { + if (i > v.size()) + throw index_error(); v.insert(v.begin() + (DiffType) i, x); }, arg("i") , arg("x"), @@ -345,23 +339,25 @@ vector_buffer(Class_& cl) { format_descriptor<T>::format(); cl.def_buffer([](Vector& v) -> buffer_info { - return buffer_info(v.data(), sizeof(T), format_descriptor<T>::format(), 1, {v.size()}, {sizeof(T)}); + return buffer_info(v.data(), static_cast<ssize_t>(sizeof(T)), format_descriptor<T>::format(), 1, {v.size()}, {sizeof(T)}); }); - cl.def("__init__", [](Vector& vec, buffer buf) { + cl.def(init([](buffer buf) { auto info = buf.request(); - if (info.ndim != 1 || info.strides[0] <= 0 || info.strides[0] % sizeof(T)) + if (info.ndim != 1 || info.strides[0] % static_cast<ssize_t>(sizeof(T))) throw type_error("Only valid 1D buffers can be copied to a vector"); - if (!detail::compare_buffer_info<T>::compare(info) || sizeof(T) != info.itemsize) + if (!detail::compare_buffer_info<T>::compare(info) || (ssize_t) sizeof(T) != info.itemsize) throw type_error("Format mismatch (Python: " + info.format + " C++: " + format_descriptor<T>::format() + ")"); - new (&vec) Vector(); - vec.reserve(info.shape[0]); + + auto vec = std::unique_ptr<Vector>(new Vector()); + vec->reserve((size_t) info.shape[0]); T *p = static_cast<T*>(info.ptr); - auto step = info.strides[0] / sizeof(T); + ssize_t step = info.strides[0] / static_cast<ssize_t>(sizeof(T)); T *end = p + info.shape[0] * step; - for (; p < end; p += step) - vec.push_back(*p); - }); + for (; p != end; p += step) + vec->push_back(*p); + return vec.release(); + })); return; } @@ -375,10 +371,16 @@ NAMESPACE_END(detail) // std::vector // template <typename Vector, typename holder_type = std::unique_ptr<Vector>, typename... Args> -class_<Vector, holder_type> bind_vector(module &m, std::string const &name, Args&&... args) { +class_<Vector, holder_type> bind_vector(handle scope, std::string const &name, Args&&... args) { using Class_ = class_<Vector, holder_type>; - Class_ cl(m, name.c_str(), std::forward<Args>(args)...); + // If the value_type is unregistered (e.g. a converting type) or is itself registered + // module-local then make the vector binding module-local as well: + using vtype = typename Vector::value_type; + auto vtype_info = detail::get_type_info(typeid(vtype)); + bool local = !vtype_info || vtype_info->module_local; + + Class_ cl(scope, name.c_str(), pybind11::module_local(local), std::forward<Args>(args)...); // Declare the buffer interface if a buffer_protocol() is passed in detail::vector_buffer<Vector, Class_, Args...>(cl); @@ -486,7 +488,7 @@ void map_assignment(enable_if_t<std::is_copy_assignable<typename Map::mapped_typ template<typename Map, typename Class_> void map_assignment(enable_if_t< !std::is_copy_assignable<typename Map::mapped_type>::value && - std::is_copy_constructible<typename Map::mapped_type>::value, + is_copy_constructible<typename Map::mapped_type>::value, Class_> &cl) { using KeyType = typename Map::key_type; using MappedType = typename Map::mapped_type; @@ -530,12 +532,22 @@ template <typename Map, typename Class_> auto map_if_insertion_operator(Class_ & NAMESPACE_END(detail) template <typename Map, typename holder_type = std::unique_ptr<Map>, typename... Args> -class_<Map, holder_type> bind_map(module &m, const std::string &name, Args&&... args) { +class_<Map, holder_type> bind_map(handle scope, const std::string &name, Args&&... args) { using KeyType = typename Map::key_type; using MappedType = typename Map::mapped_type; using Class_ = class_<Map, holder_type>; - Class_ cl(m, name.c_str(), std::forward<Args>(args)...); + // If either type is a non-module-local bound type then make the map binding non-local as well; + // otherwise (e.g. both types are either module-local or converting) the map will be + // module-local. + auto tinfo = detail::get_type_info(typeid(MappedType)); + bool local = !tinfo || tinfo->module_local; + if (local) { + tinfo = detail::get_type_info(typeid(KeyType)); + local = !tinfo || tinfo->module_local; + } + + Class_ cl(scope, name.c_str(), pybind11::module_local(local), std::forward<Args>(args)...); cl.def(init<>()); @@ -584,4 +596,4 @@ class_<Map, holder_type> bind_map(module &m, const std::string &name, Args&&... return cl; } -NAMESPACE_END(pybind11) +NAMESPACE_END(PYBIND11_NAMESPACE) diff --git a/ext/pybind11/pybind11/__main__.py b/ext/pybind11/pybind11/__main__.py new file mode 100644 index 000000000..9ef837802 --- /dev/null +++ b/ext/pybind11/pybind11/__main__.py @@ -0,0 +1,37 @@ +from __future__ import print_function + +import argparse +import sys +import sysconfig + +from . import get_include + + +def print_includes(): + dirs = [sysconfig.get_path('include'), + sysconfig.get_path('platinclude'), + get_include(), + get_include(True)] + + # Make unique but preserve order + unique_dirs = [] + for d in dirs: + if d not in unique_dirs: + unique_dirs.append(d) + + print(' '.join('-I' + d for d in unique_dirs)) + + +def main(): + parser = argparse.ArgumentParser(prog='python -m pybind11') + parser.add_argument('--includes', action='store_true', + help='Include flags for both pybind11 and Python headers.') + args = parser.parse_args() + if not sys.argv[1:]: + parser.print_help() + if args.includes: + print_includes() + + +if __name__ == '__main__': + main() diff --git a/ext/pybind11/pybind11/_version.py b/ext/pybind11/pybind11/_version.py index 2bb44f715..924115060 100644 --- a/ext/pybind11/pybind11/_version.py +++ b/ext/pybind11/pybind11/_version.py @@ -1,2 +1,2 @@ -version_info = (2, 1, 1) +version_info = (2, 2, 1) __version__ = '.'.join(map(str, version_info)) diff --git a/ext/pybind11/setup.py b/ext/pybind11/setup.py index 0cf4e47ce..b76120573 100644 --- a/ext/pybind11/setup.py +++ b/ext/pybind11/setup.py @@ -3,6 +3,7 @@ # Setup script for PyPI; use CMakeFile.txt to build extension modules from setuptools import setup +from distutils.command.install_headers import install_headers from pybind11 import __version__ import os @@ -12,16 +13,23 @@ if os.environ.get('PYBIND11_USE_CMAKE'): headers = [] else: headers = [ + 'include/pybind11/detail/class.h', + 'include/pybind11/detail/common.h', + 'include/pybind11/detail/descr.h', + 'include/pybind11/detail/init.h', + 'include/pybind11/detail/internals.h', + 'include/pybind11/detail/typeid.h', 'include/pybind11/attr.h', + 'include/pybind11/buffer_info.h', 'include/pybind11/cast.h', 'include/pybind11/chrono.h', - 'include/pybind11/class_support.h', 'include/pybind11/common.h', 'include/pybind11/complex.h', - 'include/pybind11/descr.h', 'include/pybind11/eigen.h', + 'include/pybind11/embed.h', 'include/pybind11/eval.h', 'include/pybind11/functional.h', + 'include/pybind11/iostream.h', 'include/pybind11/numpy.h', 'include/pybind11/operators.h', 'include/pybind11/options.h', @@ -29,9 +37,24 @@ else: 'include/pybind11/pytypes.h', 'include/pybind11/stl.h', 'include/pybind11/stl_bind.h', - 'include/pybind11/typeid.h' ] + +class InstallHeaders(install_headers): + """Use custom header installer because the default one flattens subdirectories""" + def run(self): + if not self.distribution.headers: + return + + for header in self.distribution.headers: + subdir = os.path.dirname(os.path.relpath(header, 'include/pybind11')) + install_dir = os.path.join(self.install_dir, subdir) + self.mkpath(install_dir) + + (out, _) = self.copy_file(header, install_dir) + self.outfiles.append(out) + + setup( name='pybind11', version=__version__, @@ -43,6 +66,7 @@ setup( packages=['pybind11'], license='BSD', headers=headers, + cmdclass=dict(install_headers=InstallHeaders), classifiers=[ 'Development Status :: 5 - Production/Stable', 'Intended Audience :: Developers', diff --git a/ext/pybind11/tests/CMakeLists.txt b/ext/pybind11/tests/CMakeLists.txt index 11be49e53..25e06662c 100644 --- a/ext/pybind11/tests/CMakeLists.txt +++ b/ext/pybind11/tests/CMakeLists.txt @@ -12,7 +12,7 @@ option(PYBIND11_WERROR "Report all warnings as errors" OFF) if (CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_SOURCE_DIR) # We're being loaded directly, i.e. not via add_subdirectory, so make this # work as its own project and load the pybind11Config to get the tools we need - project(pybind11_tests) + project(pybind11_tests CXX) find_package(pybind11 REQUIRED CONFIG) endif() @@ -26,22 +26,23 @@ endif() # Full set of test files (you can override these; see below) set(PYBIND11_TEST_FILES - test_alias_initialization.cpp test_buffers.cpp + test_builtin_casters.cpp + test_call_policies.cpp test_callbacks.cpp test_chrono.cpp - test_class_args.cpp + test_class.cpp test_constants_and_functions.cpp - test_copy_move_policies.cpp + test_copy_move.cpp test_docstring_options.cpp test_eigen.cpp test_enum.cpp test_eval.cpp test_exceptions.cpp - test_inheritance.cpp - test_issues.cpp - test_keep_alive.cpp + test_factory_constructors.cpp + test_iostream.cpp test_kwargs_and_defaults.cpp + test_local_bindings.cpp test_methods_and_attributes.cpp test_modules.cpp test_multiple_inheritance.cpp @@ -51,15 +52,16 @@ set(PYBIND11_TEST_FILES test_opaque_types.cpp test_operator_overloading.cpp test_pickling.cpp - test_python_types.cpp + test_pytypes.cpp test_sequences_and_iterators.cpp test_smart_ptr.cpp + test_stl.cpp test_stl_binders.cpp test_virtual_functions.cpp ) # Invoking cmake with something like: -# cmake -DPYBIND11_TEST_OVERRIDE="test_issues.cpp;test_picking.cpp" .. +# cmake -DPYBIND11_TEST_OVERRIDE="test_callbacks.cpp;test_picking.cpp" .. # lets you override the tests that get compiled and run. You can restore to all tests with: # cmake -DPYBIND11_TEST_OVERRIDE= .. if (PYBIND11_TEST_OVERRIDE) @@ -68,6 +70,16 @@ endif() string(REPLACE ".cpp" ".py" PYBIND11_PYTEST_FILES "${PYBIND11_TEST_FILES}") +# Contains the set of test files that require pybind11_cross_module_tests to be +# built; if none of these are built (i.e. because TEST_OVERRIDE is used and +# doesn't include them) the second module doesn't get built. +set(PYBIND11_CROSS_MODULE_TESTS + test_exceptions.py + test_local_bindings.py + test_stl.py + test_stl_binders.py +) + # Check if Eigen is available; if not, remove from PYBIND11_TEST_FILES (but # keep it in PYBIND11_PYTEST_FILES, so that we get the "eigen is not installed" # skip message). @@ -104,6 +116,9 @@ if(PYBIND11_TEST_FILES_EIGEN_I GREATER -1) endif() endif() +# Optional dependency for some tests (boost::variant is only supported with version >= 1.56) +find_package(Boost 1.56) + # Compile with compiler warnings turned on function(pybind11_enable_warnings target_name) if(MSVC) @@ -121,32 +136,55 @@ function(pybind11_enable_warnings target_name) endif() endfunction() +set(test_targets pybind11_tests) + +# Build pybind11_cross_module_tests if any test_whatever.py are being built that require it +foreach(t ${PYBIND11_CROSS_MODULE_TESTS}) + list(FIND PYBIND11_PYTEST_FILES ${t} i) + if (i GREATER -1) + list(APPEND test_targets pybind11_cross_module_tests) + break() + endif() +endforeach() -# Create the binding library -pybind11_add_module(pybind11_tests THIN_LTO pybind11_tests.cpp - ${PYBIND11_TEST_FILES} ${PYBIND11_HEADERS}) +set(testdir ${CMAKE_CURRENT_SOURCE_DIR}) +foreach(target ${test_targets}) + set(test_files ${PYBIND11_TEST_FILES}) + if(NOT target STREQUAL "pybind11_tests") + set(test_files "") + endif() -pybind11_enable_warnings(pybind11_tests) + # Create the binding library + pybind11_add_module(${target} THIN_LTO ${target}.cpp ${test_files} ${PYBIND11_HEADERS}) + pybind11_enable_warnings(${target}) -if(EIGEN3_FOUND) - if (PYBIND11_EIGEN_VIA_TARGET) - target_link_libraries(pybind11_tests PRIVATE Eigen3::Eigen) - else() - target_include_directories(pybind11_tests PRIVATE ${EIGEN3_INCLUDE_DIR}) + if(MSVC) + target_compile_options(${target} PRIVATE /utf-8) endif() - target_compile_definitions(pybind11_tests PRIVATE -DPYBIND11_TEST_EIGEN) -endif() -set(testdir ${CMAKE_CURRENT_SOURCE_DIR}) + if(EIGEN3_FOUND) + if (PYBIND11_EIGEN_VIA_TARGET) + target_link_libraries(${target} PRIVATE Eigen3::Eigen) + else() + target_include_directories(${target} PRIVATE ${EIGEN3_INCLUDE_DIR}) + endif() + target_compile_definitions(${target} PRIVATE -DPYBIND11_TEST_EIGEN) + endif() -# Always write the output file directly into the 'tests' directory (even on MSVC) -if(NOT CMAKE_LIBRARY_OUTPUT_DIRECTORY) - set_target_properties(pybind11_tests PROPERTIES LIBRARY_OUTPUT_DIRECTORY ${testdir}) - foreach(config ${CMAKE_CONFIGURATION_TYPES}) - string(TOUPPER ${config} config) - set_target_properties(pybind11_tests PROPERTIES LIBRARY_OUTPUT_DIRECTORY_${config} ${testdir}) - endforeach() -endif() + if(Boost_FOUND) + target_include_directories(${target} PRIVATE ${Boost_INCLUDE_DIRS}) + target_compile_definitions(${target} PRIVATE -DPYBIND11_TEST_BOOST) + endif() + + # Always write the output file directly into the 'tests' directory (even on MSVC) + if(NOT CMAKE_LIBRARY_OUTPUT_DIRECTORY) + set_target_properties(${target} PROPERTIES LIBRARY_OUTPUT_DIRECTORY ${testdir}) + foreach(config ${CMAKE_CONFIGURATION_TYPES}) + string(TOUPPER ${config} config) + set_target_properties(${target} PROPERTIES LIBRARY_OUTPUT_DIRECTORY_${config} ${testdir}) + endforeach() + endif() +endforeach() # Make sure pytest is found or produce a fatal error if(NOT PYBIND11_PYTEST_FOUND) @@ -162,9 +200,15 @@ if(NOT PYBIND11_PYTEST_FOUND) set(PYBIND11_PYTEST_FOUND TRUE CACHE INTERNAL "") endif() +if(CMAKE_VERSION VERSION_LESS 3.2) + set(PYBIND11_USES_TERMINAL "") +else() + set(PYBIND11_USES_TERMINAL "USES_TERMINAL") +endif() + # A single command to compile and run the tests add_custom_target(pytest COMMAND ${PYTHON_EXECUTABLE} -m pytest ${PYBIND11_PYTEST_FILES} - DEPENDS pybind11_tests WORKING_DIRECTORY ${testdir}) + DEPENDS ${test_targets} WORKING_DIRECTORY ${testdir} ${PYBIND11_USES_TERMINAL}) if(PYBIND11_TEST_OVERRIDE) add_custom_command(TARGET pytest POST_BUILD @@ -180,59 +224,13 @@ if (NOT PROJECT_NAME STREQUAL "pybind11") return() endif() -# Add a post-build comment to show the .so size and, if a previous size, compare it: +# Add a post-build comment to show the primary test suite .so size and, if a previous size, compare it: add_custom_command(TARGET pybind11_tests POST_BUILD COMMAND ${PYTHON_EXECUTABLE} ${PROJECT_SOURCE_DIR}/tools/libsize.py $<TARGET_FILE:pybind11_tests> ${CMAKE_CURRENT_BINARY_DIR}/sosize-$<TARGET_FILE_NAME:pybind11_tests>.txt) -# Test CMake build using functions and targets from subdirectory or installed location -add_custom_target(test_cmake_build) -if(NOT CMAKE_VERSION VERSION_LESS 3.1) - # 3.0 needed for interface library for subdirectory_target/installed_target - # 3.1 needed for cmake -E env for testing - - include(CMakeParseArguments) - function(pybind11_add_build_test name) - cmake_parse_arguments(ARG "INSTALL" "" "" ${ARGN}) - - set(build_options "-DCMAKE_PREFIX_PATH=${PROJECT_BINARY_DIR}/mock_install" - "-DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER}" - "-DPYTHON_EXECUTABLE=${PYTHON_EXECUTABLE}" - "-DPYBIND11_CPP_STANDARD=${PYBIND11_CPP_STANDARD}") - if(NOT ARG_INSTALL) - list(APPEND build_options "-DPYBIND11_PROJECT_DIR=${PROJECT_SOURCE_DIR}") - endif() +# Test embedding the interpreter. Provides the `cpptest` target. +add_subdirectory(test_embed) - add_custom_target(test_${name} ${CMAKE_CTEST_COMMAND} - --quiet --output-log test_cmake_build/${name}.log - --build-and-test "${CMAKE_CURRENT_SOURCE_DIR}/test_cmake_build/${name}" - "${CMAKE_CURRENT_BINARY_DIR}/test_cmake_build/${name}" - --build-config Release - --build-noclean - --build-generator ${CMAKE_GENERATOR} - $<$<BOOL:${CMAKE_GENERATOR_PLATFORM}>:--build-generator-platform> ${CMAKE_GENERATOR_PLATFORM} - --build-makeprogram ${CMAKE_MAKE_PROGRAM} - --build-target check - --build-options ${build_options} - ) - if(ARG_INSTALL) - add_dependencies(test_${name} mock_install) - endif() - add_dependencies(test_cmake_build test_${name}) - endfunction() - - pybind11_add_build_test(subdirectory_function) - pybind11_add_build_test(subdirectory_target) - - if(PYBIND11_INSTALL) - add_custom_target(mock_install ${CMAKE_COMMAND} - "-DCMAKE_INSTALL_PREFIX=${PROJECT_BINARY_DIR}/mock_install" - -P "${PROJECT_BINARY_DIR}/cmake_install.cmake" - ) - - pybind11_add_build_test(installed_function INSTALL) - pybind11_add_build_test(installed_target INSTALL) - endif() -endif() - -add_dependencies(check test_cmake_build) +# Test CMake build using functions and targets from subdirectory or installed location +add_subdirectory(test_cmake_build) diff --git a/ext/pybind11/tests/conftest.py b/ext/pybind11/tests/conftest.py index 5b08004e3..f4c228260 100644 --- a/ext/pybind11/tests/conftest.py +++ b/ext/pybind11/tests/conftest.py @@ -196,7 +196,7 @@ def pytest_namespace(): except ImportError: scipy = None try: - from pybind11_tests import have_eigen + from pybind11_tests.eigen import have_eigen except ImportError: have_eigen = False pypy = platform.python_implementation() == "PyPy" @@ -211,6 +211,8 @@ def pytest_namespace(): 'requires_eigen_and_scipy': skipif(not have_eigen or not scipy, reason="eigen and/or scipy are not installed"), 'unsupported_on_pypy': skipif(pypy, reason="unsupported on PyPy"), + 'unsupported_on_py2': skipif(sys.version_info.major < 3, + reason="unsupported on Python 2.x"), 'gc_collect': gc_collect } diff --git a/ext/pybind11/tests/constructor_stats.h b/ext/pybind11/tests/constructor_stats.h index f66ff71df..babded032 100644 --- a/ext/pybind11/tests/constructor_stats.h +++ b/ext/pybind11/tests/constructor_stats.h @@ -169,7 +169,7 @@ public: auto &internals = py::detail::get_internals(); const std::type_index *t1 = nullptr, *t2 = nullptr; try { - auto *type_info = internals.registered_types_py.at(class_.ptr()); + auto *type_info = internals.registered_types_py.at((PyTypeObject *) class_.ptr()).at(0); for (auto &p : internals.registered_types_cpp) { if (p.second == type_info) { if (t1) { diff --git a/ext/pybind11/tests/local_bindings.h b/ext/pybind11/tests/local_bindings.h new file mode 100644 index 000000000..b6afb8086 --- /dev/null +++ b/ext/pybind11/tests/local_bindings.h @@ -0,0 +1,64 @@ +#pragma once +#include "pybind11_tests.h" + +/// Simple class used to test py::local: +template <int> class LocalBase { +public: + LocalBase(int i) : i(i) { } + int i = -1; +}; + +/// Registered with py::module_local in both main and secondary modules: +using LocalType = LocalBase<0>; +/// Registered without py::module_local in both modules: +using NonLocalType = LocalBase<1>; +/// A second non-local type (for stl_bind tests): +using NonLocal2 = LocalBase<2>; +/// Tests within-module, different-compilation-unit local definition conflict: +using LocalExternal = LocalBase<3>; +/// Mixed: registered local first, then global +using MixedLocalGlobal = LocalBase<4>; +/// Mixed: global first, then local +using MixedGlobalLocal = LocalBase<5>; + +/// Registered with py::module_local only in the secondary module: +using ExternalType1 = LocalBase<6>; +using ExternalType2 = LocalBase<7>; + +using LocalVec = std::vector<LocalType>; +using LocalVec2 = std::vector<NonLocal2>; +using LocalMap = std::unordered_map<std::string, LocalType>; +using NonLocalVec = std::vector<NonLocalType>; +using NonLocalVec2 = std::vector<NonLocal2>; +using NonLocalMap = std::unordered_map<std::string, NonLocalType>; +using NonLocalMap2 = std::unordered_map<std::string, uint8_t>; + +PYBIND11_MAKE_OPAQUE(LocalVec); +PYBIND11_MAKE_OPAQUE(LocalVec2); +PYBIND11_MAKE_OPAQUE(LocalMap); +PYBIND11_MAKE_OPAQUE(NonLocalVec); +//PYBIND11_MAKE_OPAQUE(NonLocalVec2); // same type as LocalVec2 +PYBIND11_MAKE_OPAQUE(NonLocalMap); +PYBIND11_MAKE_OPAQUE(NonLocalMap2); + + +// Simple bindings (used with the above): +template <typename T, int Adjust = 0, typename... Args> +py::class_<T> bind_local(Args && ...args) { + return py::class_<T>(std::forward<Args>(args)...) + .def(py::init<int>()) + .def("get", [](T &i) { return i.i + Adjust; }); +}; + +// Simulate a foreign library base class (to match the example in the docs): +namespace pets { +class Pet { +public: + Pet(std::string name) : name_(name) {} + std::string name_; + const std::string &name() { return name_; } +}; +} + +struct MixGL { int i; MixGL(int i) : i{i} {} }; +struct MixGL2 { int i; MixGL2(int i) : i{i} {} }; diff --git a/ext/pybind11/tests/pybind11_cross_module_tests.cpp b/ext/pybind11/tests/pybind11_cross_module_tests.cpp new file mode 100644 index 000000000..f705e3106 --- /dev/null +++ b/ext/pybind11/tests/pybind11_cross_module_tests.cpp @@ -0,0 +1,123 @@ +/* + tests/pybind11_cross_module_tests.cpp -- contains tests that require multiple modules + + Copyright (c) 2017 Jason Rhinelander <jason@imaginary.ca> + + All rights reserved. Use of this source code is governed by a + BSD-style license that can be found in the LICENSE file. +*/ + +#include "pybind11_tests.h" +#include "local_bindings.h" +#include <pybind11/stl_bind.h> +#include <numeric> + +PYBIND11_MODULE(pybind11_cross_module_tests, m) { + m.doc() = "pybind11 cross-module test module"; + + // test_local_bindings.py tests: + // + // Definitions here are tested by importing both this module and the + // relevant pybind11_tests submodule from a test_whatever.py + + // test_load_external + bind_local<ExternalType1>(m, "ExternalType1", py::module_local()); + bind_local<ExternalType2>(m, "ExternalType2", py::module_local()); + + // test_exceptions.py + m.def("raise_runtime_error", []() { PyErr_SetString(PyExc_RuntimeError, "My runtime error"); throw py::error_already_set(); }); + m.def("raise_value_error", []() { PyErr_SetString(PyExc_ValueError, "My value error"); throw py::error_already_set(); }); + m.def("throw_pybind_value_error", []() { throw py::value_error("pybind11 value error"); }); + m.def("throw_pybind_type_error", []() { throw py::type_error("pybind11 type error"); }); + m.def("throw_stop_iteration", []() { throw py::stop_iteration(); }); + + // test_local_bindings.py + // Local to both: + bind_local<LocalType, 1>(m, "LocalType", py::module_local()) + .def("get2", [](LocalType &t) { return t.i + 2; }) + ; + + // Can only be called with our python type: + m.def("local_value", [](LocalType &l) { return l.i; }); + + // test_nonlocal_failure + // This registration will fail (global registration when LocalFail is already registered + // globally in the main test module): + m.def("register_nonlocal", [m]() { + bind_local<NonLocalType, 0>(m, "NonLocalType"); + }); + + // test_stl_bind_local + // stl_bind.h binders defaults to py::module_local if the types are local or converting: + py::bind_vector<LocalVec>(m, "LocalVec"); + py::bind_map<LocalMap>(m, "LocalMap"); + + // test_stl_bind_global + // and global if the type (or one of the types, for the map) is global (so these will fail, + // assuming pybind11_tests is already loaded): + m.def("register_nonlocal_vec", [m]() { + py::bind_vector<NonLocalVec>(m, "NonLocalVec"); + }); + m.def("register_nonlocal_map", [m]() { + py::bind_map<NonLocalMap>(m, "NonLocalMap"); + }); + // The default can, however, be overridden to global using `py::module_local()` or + // `py::module_local(false)`. + // Explicitly made local: + py::bind_vector<NonLocalVec2>(m, "NonLocalVec2", py::module_local()); + // Explicitly made global (and so will fail to bind): + m.def("register_nonlocal_map2", [m]() { + py::bind_map<NonLocalMap2>(m, "NonLocalMap2", py::module_local(false)); + }); + + // test_mixed_local_global + // We try this both with the global type registered first and vice versa (the order shouldn't + // matter). + m.def("register_mixed_global_local", [m]() { + bind_local<MixedGlobalLocal, 200>(m, "MixedGlobalLocal", py::module_local()); + }); + m.def("register_mixed_local_global", [m]() { + bind_local<MixedLocalGlobal, 2000>(m, "MixedLocalGlobal", py::module_local(false)); + }); + m.def("get_mixed_gl", [](int i) { return MixedGlobalLocal(i); }); + m.def("get_mixed_lg", [](int i) { return MixedLocalGlobal(i); }); + + // test_internal_locals_differ + m.def("local_cpp_types_addr", []() { return (uintptr_t) &py::detail::registered_local_types_cpp(); }); + + // test_stl_caster_vs_stl_bind + py::bind_vector<std::vector<int>>(m, "VectorInt"); + + m.def("load_vector_via_binding", [](std::vector<int> &v) { + return std::accumulate(v.begin(), v.end(), 0); + }); + + // test_cross_module_calls + m.def("return_self", [](LocalVec *v) { return v; }); + m.def("return_copy", [](const LocalVec &v) { return LocalVec(v); }); + + class Dog : public pets::Pet { public: Dog(std::string name) : Pet(name) {}; }; + py::class_<pets::Pet>(m, "Pet", py::module_local()) + .def("name", &pets::Pet::name); + // Binding for local extending class: + py::class_<Dog, pets::Pet>(m, "Dog") + .def(py::init<std::string>()); + m.def("pet_name", [](pets::Pet &p) { return p.name(); }); + + py::class_<MixGL>(m, "MixGL", py::module_local()).def(py::init<int>()); + m.def("get_gl_value", [](MixGL &o) { return o.i + 100; }); + + py::class_<MixGL2>(m, "MixGL2", py::module_local()).def(py::init<int>()); + + // test_vector_bool + // We can't test both stl.h and stl_bind.h conversions of `std::vector<bool>` within + // the same module (it would be an ODR violation). Therefore `bind_vector` of `bool` + // is defined here and tested in `test_stl_binders.py`. + py::bind_vector<std::vector<bool>>(m, "VectorBool"); + + // test_missing_header_message + // The main module already includes stl.h, but we need to test the error message + // which appears when this header is missing. + m.def("missing_header_arg", [](std::vector<float>) { }); + m.def("missing_header_return", []() { return std::vector<float>(); }); +} diff --git a/ext/pybind11/tests/pybind11_tests.cpp b/ext/pybind11/tests/pybind11_tests.cpp index 1d805d75b..bc7d2c3e7 100644 --- a/ext/pybind11/tests/pybind11_tests.cpp +++ b/ext/pybind11/tests/pybind11_tests.cpp @@ -10,6 +10,9 @@ #include "pybind11_tests.h" #include "constructor_stats.h" +#include <functional> +#include <list> + /* For testing purposes, we define a static global variable here in a function that each individual test .cpp calls with its initialization lambda. It's convenient here because we can just not @@ -28,8 +31,15 @@ std::list<std::function<void(py::module &)>> &initializers() { return inits; } -test_initializer::test_initializer(std::function<void(py::module &)> initializer) { - initializers().push_back(std::move(initializer)); +test_initializer::test_initializer(Initializer init) { + initializers().push_back(init); +} + +test_initializer::test_initializer(const char *submodule_name, Initializer init) { + initializers().push_back([=](py::module &parent) { + auto m = parent.def_submodule(submodule_name); + init(m); + }); } void bind_ConstructorStats(py::module &m) { @@ -41,18 +51,43 @@ void bind_ConstructorStats(py::module &m) { .def_readwrite("move_assignments", &ConstructorStats::move_assignments) .def_readwrite("copy_constructions", &ConstructorStats::copy_constructions) .def_readwrite("move_constructions", &ConstructorStats::move_constructions) - .def_static("get", (ConstructorStats &(*)(py::object)) &ConstructorStats::get, py::return_value_policy::reference_internal); + .def_static("get", (ConstructorStats &(*)(py::object)) &ConstructorStats::get, py::return_value_policy::reference_internal) + + // Not exactly ConstructorStats, but related: expose the internal pybind number of registered instances + // to allow instance cleanup checks (invokes a GC first) + .def_static("detail_reg_inst", []() { + ConstructorStats::gc(); + return py::detail::get_internals().registered_instances.size(); + }) + ; } -PYBIND11_PLUGIN(pybind11_tests) { - py::module m("pybind11_tests", "pybind testing plugin"); +PYBIND11_MODULE(pybind11_tests, m) { + m.doc() = "pybind11 test module"; bind_ConstructorStats(m); +#if !defined(NDEBUG) + m.attr("debug_enabled") = true; +#else + m.attr("debug_enabled") = false; +#endif + + py::class_<UserType>(m, "UserType", "A `py::class_` type for testing") + .def(py::init<>()) + .def(py::init<int>()) + .def("get_value", &UserType::value, "Get value using a method") + .def("set_value", &UserType::set, "Set value using a method") + .def_property("value", &UserType::value, &UserType::set, "Get/set value using a property") + .def("__repr__", [](const UserType& u) { return "UserType({})"_s.format(u.value()); }); + + py::class_<IncType, UserType>(m, "IncType") + .def(py::init<>()) + .def(py::init<int>()) + .def("__repr__", [](const IncType& u) { return "IncType({})"_s.format(u.value()); }); + for (const auto &initializer : initializers()) initializer(m); if (!py::hasattr(m, "have_eigen")) m.attr("have_eigen") = false; - - return m.ptr(); } diff --git a/ext/pybind11/tests/pybind11_tests.h b/ext/pybind11/tests/pybind11_tests.h index c11b687b2..90963a5de 100644 --- a/ext/pybind11/tests/pybind11_tests.h +++ b/ext/pybind11/tests/pybind11_tests.h @@ -1,12 +1,65 @@ #pragma once #include <pybind11/pybind11.h> -#include <functional> -#include <list> + +#if defined(_MSC_VER) && _MSC_VER < 1910 +// We get some really long type names here which causes MSVC 2015 to emit warnings +# pragma warning(disable: 4503) // warning C4503: decorated name length exceeded, name was truncated +#endif namespace py = pybind11; using namespace pybind11::literals; class test_initializer { + using Initializer = void (*)(py::module &); + +public: + test_initializer(Initializer init); + test_initializer(const char *submodule_name, Initializer init); +}; + +#define TEST_SUBMODULE(name, variable) \ + void test_submodule_##name(py::module &); \ + test_initializer name(#name, test_submodule_##name); \ + void test_submodule_##name(py::module &variable) + + +/// Dummy type which is not exported anywhere -- something to trigger a conversion error +struct UnregisteredType { }; + +/// A user-defined type which is exported and can be used by any test +class UserType { +public: + UserType() = default; + UserType(int i) : i(i) { } + + int value() const { return i; } + void set(int set) { i = set; } + +private: + int i = -1; +}; + +/// Like UserType, but increments `value` on copy for quick reference vs. copy tests +class IncType : public UserType { +public: + using UserType::UserType; + IncType() = default; + IncType(const IncType &other) : IncType(other.value() + 1) { } + IncType(IncType &&) = delete; + IncType &operator=(const IncType &) = delete; + IncType &operator=(IncType &&) = delete; +}; + +/// Custom cast-only type that casts to a string "rvalue" or "lvalue" depending on the cast context. +/// Used to test recursive casters (e.g. std::tuple, stl containers). +struct RValueCaster {}; +NAMESPACE_BEGIN(pybind11) +NAMESPACE_BEGIN(detail) +template<> class type_caster<RValueCaster> { public: - test_initializer(std::function<void(py::module &)> initializer); + PYBIND11_TYPE_CASTER(RValueCaster, _("RValueCaster")); + static handle cast(RValueCaster &&, return_value_policy, handle) { return py::str("rvalue").release(); } + static handle cast(const RValueCaster &, return_value_policy, handle) { return py::str("lvalue").release(); } }; +NAMESPACE_END(detail) +NAMESPACE_END(pybind11) diff --git a/ext/pybind11/tests/pytest.ini b/ext/pybind11/tests/pytest.ini index 401cbe0ad..1e44f0a05 100644 --- a/ext/pybind11/tests/pytest.ini +++ b/ext/pybind11/tests/pytest.ini @@ -1,7 +1,15 @@ [pytest] minversion = 3.0 +norecursedirs = test_cmake_build test_embed addopts = # show summary of skipped tests -rs # capture only Python print and C++ py::print, but not C output (low-level Python errors) --capture=sys +filterwarnings = + # make warnings into errors but ignore certain third-party extension issues + error + # importing scipy submodules on some version of Python + ignore::ImportWarning + # bogus numpy ABI warning (see numpy/#432) + ignore:.*numpy.dtype size changed.*:RuntimeWarning diff --git a/ext/pybind11/tests/test_alias_initialization.cpp b/ext/pybind11/tests/test_alias_initialization.cpp deleted file mode 100644 index 48e595695..000000000 --- a/ext/pybind11/tests/test_alias_initialization.cpp +++ /dev/null @@ -1,62 +0,0 @@ -/* - tests/test_alias_initialization.cpp -- test cases and example of different trampoline - initialization modes - - Copyright (c) 2016 Wenzel Jakob <wenzel.jakob@epfl.ch>, Jason Rhinelander <jason@imaginary.ca> - - All rights reserved. Use of this source code is governed by a - BSD-style license that can be found in the LICENSE file. -*/ - -#include "pybind11_tests.h" - -test_initializer alias_initialization([](py::module &m) { - // don't invoke Python dispatch classes by default when instantiating C++ classes that were not - // extended on the Python side - struct A { - virtual ~A() {} - virtual void f() { py::print("A.f()"); } - }; - - struct PyA : A { - PyA() { py::print("PyA.PyA()"); } - ~PyA() { py::print("PyA.~PyA()"); } - - void f() override { - py::print("PyA.f()"); - PYBIND11_OVERLOAD(void, A, f); - } - }; - - auto call_f = [](A *a) { a->f(); }; - - py::class_<A, PyA>(m, "A") - .def(py::init<>()) - .def("f", &A::f); - - m.def("call_f", call_f); - - - // ... unless we explicitly request it, as in this example: - struct A2 { - virtual ~A2() {} - virtual void f() { py::print("A2.f()"); } - }; - - struct PyA2 : A2 { - PyA2() { py::print("PyA2.PyA2()"); } - ~PyA2() { py::print("PyA2.~PyA2()"); } - void f() override { - py::print("PyA2.f()"); - PYBIND11_OVERLOAD(void, A2, f); - } - }; - - py::class_<A2, PyA2>(m, "A2") - .def(py::init_alias<>()) - .def("f", &A2::f); - - m.def("call_f", [](A2 *a2) { a2->f(); }); - -}); - diff --git a/ext/pybind11/tests/test_alias_initialization.py b/ext/pybind11/tests/test_alias_initialization.py deleted file mode 100644 index fb90cfc7b..000000000 --- a/ext/pybind11/tests/test_alias_initialization.py +++ /dev/null @@ -1,80 +0,0 @@ -import pytest - - -def test_alias_delay_initialization1(capture): - """ - A only initializes its trampoline class when we inherit from it; if we just - create and use an A instance directly, the trampoline initialization is - bypassed and we only initialize an A() instead (for performance reasons). - """ - from pybind11_tests import A, call_f - - class B(A): - def __init__(self): - super(B, self).__init__() - - def f(self): - print("In python f()") - - # C++ version - with capture: - a = A() - call_f(a) - del a - pytest.gc_collect() - assert capture == "A.f()" - - # Python version - with capture: - b = B() - call_f(b) - del b - pytest.gc_collect() - assert capture == """ - PyA.PyA() - PyA.f() - In python f() - PyA.~PyA() - """ - - -def test_alias_delay_initialization2(capture): - """A2, unlike the above, is configured to always initialize the alias; while - the extra initialization and extra class layer has small virtual dispatch - performance penalty, it also allows us to do more things with the trampoline - class such as defining local variables and performing construction/destruction. - """ - from pybind11_tests import A2, call_f - - class B2(A2): - def __init__(self): - super(B2, self).__init__() - - def f(self): - print("In python B2.f()") - - # No python subclass version - with capture: - a2 = A2() - call_f(a2) - del a2 - pytest.gc_collect() - assert capture == """ - PyA2.PyA2() - PyA2.f() - A2.f() - PyA2.~PyA2() - """ - - # Python subclass version - with capture: - b2 = B2() - call_f(b2) - del b2 - pytest.gc_collect() - assert capture == """ - PyA2.PyA2() - PyA2.f() - In python B2.f() - PyA2.~PyA2() - """ diff --git a/ext/pybind11/tests/test_buffers.cpp b/ext/pybind11/tests/test_buffers.cpp index 057250d29..5be717730 100644 --- a/ext/pybind11/tests/test_buffers.cpp +++ b/ext/pybind11/tests/test_buffers.cpp @@ -10,93 +10,94 @@ #include "pybind11_tests.h" #include "constructor_stats.h" -class Matrix { -public: - Matrix(size_t rows, size_t cols) : m_rows(rows), m_cols(cols) { - print_created(this, std::to_string(m_rows) + "x" + std::to_string(m_cols) + " matrix"); - m_data = new float[rows*cols]; - memset(m_data, 0, sizeof(float) * rows * cols); - } - - Matrix(const Matrix &s) : m_rows(s.m_rows), m_cols(s.m_cols) { - print_copy_created(this, std::to_string(m_rows) + "x" + std::to_string(m_cols) + " matrix"); - m_data = new float[m_rows * m_cols]; - memcpy(m_data, s.m_data, sizeof(float) * m_rows * m_cols); - } - - Matrix(Matrix &&s) : m_rows(s.m_rows), m_cols(s.m_cols), m_data(s.m_data) { - print_move_created(this); - s.m_rows = 0; - s.m_cols = 0; - s.m_data = nullptr; - } - - ~Matrix() { - print_destroyed(this, std::to_string(m_rows) + "x" + std::to_string(m_cols) + " matrix"); - delete[] m_data; - } - - Matrix &operator=(const Matrix &s) { - print_copy_assigned(this, std::to_string(m_rows) + "x" + std::to_string(m_cols) + " matrix"); - delete[] m_data; - m_rows = s.m_rows; - m_cols = s.m_cols; - m_data = new float[m_rows * m_cols]; - memcpy(m_data, s.m_data, sizeof(float) * m_rows * m_cols); - return *this; - } - - Matrix &operator=(Matrix &&s) { - print_move_assigned(this, std::to_string(m_rows) + "x" + std::to_string(m_cols) + " matrix"); - if (&s != this) { - delete[] m_data; - m_rows = s.m_rows; m_cols = s.m_cols; m_data = s.m_data; - s.m_rows = 0; s.m_cols = 0; s.m_data = nullptr; +TEST_SUBMODULE(buffers, m) { + // test_from_python / test_to_python: + class Matrix { + public: + Matrix(ssize_t rows, ssize_t cols) : m_rows(rows), m_cols(cols) { + print_created(this, std::to_string(m_rows) + "x" + std::to_string(m_cols) + " matrix"); + m_data = new float[(size_t) (rows*cols)]; + memset(m_data, 0, sizeof(float) * (size_t) (rows * cols)); + } + + Matrix(const Matrix &s) : m_rows(s.m_rows), m_cols(s.m_cols) { + print_copy_created(this, std::to_string(m_rows) + "x" + std::to_string(m_cols) + " matrix"); + m_data = new float[(size_t) (m_rows * m_cols)]; + memcpy(m_data, s.m_data, sizeof(float) * (size_t) (m_rows * m_cols)); } - return *this; - } - float operator()(size_t i, size_t j) const { - return m_data[i*m_cols + j]; - } + Matrix(Matrix &&s) : m_rows(s.m_rows), m_cols(s.m_cols), m_data(s.m_data) { + print_move_created(this); + s.m_rows = 0; + s.m_cols = 0; + s.m_data = nullptr; + } + + ~Matrix() { + print_destroyed(this, std::to_string(m_rows) + "x" + std::to_string(m_cols) + " matrix"); + delete[] m_data; + } - float &operator()(size_t i, size_t j) { - return m_data[i*m_cols + j]; - } + Matrix &operator=(const Matrix &s) { + print_copy_assigned(this, std::to_string(m_rows) + "x" + std::to_string(m_cols) + " matrix"); + delete[] m_data; + m_rows = s.m_rows; + m_cols = s.m_cols; + m_data = new float[(size_t) (m_rows * m_cols)]; + memcpy(m_data, s.m_data, sizeof(float) * (size_t) (m_rows * m_cols)); + return *this; + } - float *data() { return m_data; } + Matrix &operator=(Matrix &&s) { + print_move_assigned(this, std::to_string(m_rows) + "x" + std::to_string(m_cols) + " matrix"); + if (&s != this) { + delete[] m_data; + m_rows = s.m_rows; m_cols = s.m_cols; m_data = s.m_data; + s.m_rows = 0; s.m_cols = 0; s.m_data = nullptr; + } + return *this; + } - size_t rows() const { return m_rows; } - size_t cols() const { return m_cols; } -private: - size_t m_rows; - size_t m_cols; - float *m_data; -}; + float operator()(ssize_t i, ssize_t j) const { + return m_data[(size_t) (i*m_cols + j)]; + } -test_initializer buffers([](py::module &m) { - py::class_<Matrix> mtx(m, "Matrix", py::buffer_protocol()); + float &operator()(ssize_t i, ssize_t j) { + return m_data[(size_t) (i*m_cols + j)]; + } - mtx.def(py::init<size_t, size_t>()) + float *data() { return m_data; } + + ssize_t rows() const { return m_rows; } + ssize_t cols() const { return m_cols; } + private: + ssize_t m_rows; + ssize_t m_cols; + float *m_data; + }; + py::class_<Matrix>(m, "Matrix", py::buffer_protocol()) + .def(py::init<ssize_t, ssize_t>()) /// Construct from a buffer - .def("__init__", [](Matrix &v, py::buffer b) { + .def(py::init([](py::buffer b) { py::buffer_info info = b.request(); if (info.format != py::format_descriptor<float>::format() || info.ndim != 2) throw std::runtime_error("Incompatible buffer format!"); - new (&v) Matrix(info.shape[0], info.shape[1]); - memcpy(v.data(), info.ptr, sizeof(float) * v.rows() * v.cols()); - }) + + auto v = new Matrix(info.shape[0], info.shape[1]); + memcpy(v->data(), info.ptr, sizeof(float) * (size_t) (v->rows() * v->cols())); + return v; + })) .def("rows", &Matrix::rows) .def("cols", &Matrix::cols) /// Bare bones interface - .def("__getitem__", [](const Matrix &m, std::pair<size_t, size_t> i) { + .def("__getitem__", [](const Matrix &m, std::pair<ssize_t, ssize_t> i) { if (i.first >= m.rows() || i.second >= m.cols()) throw py::index_error(); return m(i.first, i.second); }) - .def("__setitem__", [](Matrix &m, std::pair<size_t, size_t> i, float v) { + .def("__setitem__", [](Matrix &m, std::pair<ssize_t, ssize_t> i, float v) { if (i.first >= m.rows() || i.second >= m.cols()) throw py::index_error(); m(i.first, i.second) = v; @@ -105,13 +106,64 @@ test_initializer buffers([](py::module &m) { .def_buffer([](Matrix &m) -> py::buffer_info { return py::buffer_info( m.data(), /* Pointer to buffer */ - sizeof(float), /* Size of one scalar */ - py::format_descriptor<float>::format(), /* Python struct-style format descriptor */ - 2, /* Number of dimensions */ { m.rows(), m.cols() }, /* Buffer dimensions */ - { sizeof(float) * m.rows(), /* Strides (in bytes) for each index */ + { sizeof(float) * size_t(m.rows()), /* Strides (in bytes) for each index */ sizeof(float) } ); }) ; -}); + + + // test_inherited_protocol + class SquareMatrix : public Matrix { + public: + SquareMatrix(ssize_t n) : Matrix(n, n) { } + }; + // Derived classes inherit the buffer protocol and the buffer access function + py::class_<SquareMatrix, Matrix>(m, "SquareMatrix") + .def(py::init<ssize_t>()); + + + // test_pointer_to_member_fn + // Tests that passing a pointer to member to the base class works in + // the derived class. + struct Buffer { + int32_t value = 0; + + py::buffer_info get_buffer_info() { + return py::buffer_info(&value, sizeof(value), + py::format_descriptor<int32_t>::format(), 1); + } + }; + py::class_<Buffer>(m, "Buffer", py::buffer_protocol()) + .def(py::init<>()) + .def_readwrite("value", &Buffer::value) + .def_buffer(&Buffer::get_buffer_info); + + + class ConstBuffer { + std::unique_ptr<int32_t> value; + + public: + int32_t get_value() const { return *value; } + void set_value(int32_t v) { *value = v; } + + py::buffer_info get_buffer_info() const { + return py::buffer_info(value.get(), sizeof(*value), + py::format_descriptor<int32_t>::format(), 1); + } + + ConstBuffer() : value(new int32_t{0}) { }; + }; + py::class_<ConstBuffer>(m, "ConstBuffer", py::buffer_protocol()) + .def(py::init<>()) + .def_property("value", &ConstBuffer::get_value, &ConstBuffer::set_value) + .def_buffer(&ConstBuffer::get_buffer_info); + + struct DerivedBuffer : public Buffer { }; + py::class_<DerivedBuffer>(m, "DerivedBuffer", py::buffer_protocol()) + .def(py::init<>()) + .def_readwrite("value", (int32_t DerivedBuffer::*) &DerivedBuffer::value) + .def_buffer(&DerivedBuffer::get_buffer_info); + +} diff --git a/ext/pybind11/tests/test_buffers.py b/ext/pybind11/tests/test_buffers.py index 24843d95a..c348be5dd 100644 --- a/ext/pybind11/tests/test_buffers.py +++ b/ext/pybind11/tests/test_buffers.py @@ -1,5 +1,7 @@ +import struct import pytest -from pybind11_tests import Matrix, ConstructorStats +from pybind11_tests import buffers as m +from pybind11_tests import ConstructorStats pytestmark = pytest.requires_numpy @@ -9,17 +11,17 @@ with pytest.suppress(ImportError): def test_from_python(): with pytest.raises(RuntimeError) as excinfo: - Matrix(np.array([1, 2, 3])) # trying to assign a 1D array + m.Matrix(np.array([1, 2, 3])) # trying to assign a 1D array assert str(excinfo.value) == "Incompatible buffer format!" m3 = np.array([[1, 2, 3], [4, 5, 6]]).astype(np.float32) - m4 = Matrix(m3) + m4 = m.Matrix(m3) for i in range(m4.rows()): for j in range(m4.cols()): assert m3[i, j] == m4[i, j] - cstats = ConstructorStats.get(Matrix) + cstats = ConstructorStats.get(m.Matrix) assert cstats.alive() == 1 del m3, m4 assert cstats.alive() == 0 @@ -34,25 +36,26 @@ def test_from_python(): # https://bitbucket.org/pypy/pypy/issues/2444 @pytest.unsupported_on_pypy def test_to_python(): - m = Matrix(5, 5) + mat = m.Matrix(5, 5) + assert memoryview(mat).shape == (5, 5) - assert m[2, 3] == 0 - m[2, 3] = 4 - assert m[2, 3] == 4 + assert mat[2, 3] == 0 + mat[2, 3] = 4 + assert mat[2, 3] == 4 - m2 = np.array(m, copy=False) - assert m2.shape == (5, 5) - assert abs(m2).sum() == 4 - assert m2[2, 3] == 4 - m2[2, 3] = 5 - assert m2[2, 3] == 5 + mat2 = np.array(mat, copy=False) + assert mat2.shape == (5, 5) + assert abs(mat2).sum() == 4 + assert mat2[2, 3] == 4 + mat2[2, 3] = 5 + assert mat2[2, 3] == 5 - cstats = ConstructorStats.get(Matrix) + cstats = ConstructorStats.get(m.Matrix) assert cstats.alive() == 1 - del m + del mat pytest.gc_collect() assert cstats.alive() == 1 - del m2 # holds an m reference + del mat2 # holds a mat reference pytest.gc_collect() assert cstats.alive() == 0 assert cstats.values() == ["5x5 matrix"] @@ -60,3 +63,21 @@ def test_to_python(): # assert cstats.move_constructions >= 0 # Don't invoke any assert cstats.copy_assignments == 0 assert cstats.move_assignments == 0 + + +@pytest.unsupported_on_pypy +def test_inherited_protocol(): + """SquareMatrix is derived from Matrix and inherits the buffer protocol""" + + matrix = m.SquareMatrix(5) + assert memoryview(matrix).shape == (5, 5) + assert np.asarray(matrix).shape == (5, 5) + + +@pytest.unsupported_on_pypy +def test_pointer_to_member_fn(): + for cls in [m.Buffer, m.ConstBuffer, m.DerivedBuffer]: + buf = cls() + buf.value = 0x12345678 + value = struct.unpack('i', bytearray(buf))[0] + assert value == 0x12345678 diff --git a/ext/pybind11/tests/test_builtin_casters.cpp b/ext/pybind11/tests/test_builtin_casters.cpp new file mode 100644 index 000000000..b73e96ea5 --- /dev/null +++ b/ext/pybind11/tests/test_builtin_casters.cpp @@ -0,0 +1,156 @@ +/* + tests/test_builtin_casters.cpp -- Casters available without any additional headers + + Copyright (c) 2017 Wenzel Jakob <wenzel.jakob@epfl.ch> + + All rights reserved. Use of this source code is governed by a + BSD-style license that can be found in the LICENSE file. +*/ + +#include "pybind11_tests.h" +#include <pybind11/complex.h> + +#if defined(_MSC_VER) +# pragma warning(push) +# pragma warning(disable: 4127) // warning C4127: Conditional expression is constant +#endif + +TEST_SUBMODULE(builtin_casters, m) { + // test_simple_string + m.def("string_roundtrip", [](const char *s) { return s; }); + + // test_unicode_conversion + // Some test characters in utf16 and utf32 encodings. The last one (the 𝐀) contains a null byte + char32_t a32 = 0x61 /*a*/, z32 = 0x7a /*z*/, ib32 = 0x203d /*‽*/, cake32 = 0x1f382 /*🎂*/, mathbfA32 = 0x1d400 /*𝐀*/; + char16_t b16 = 0x62 /*b*/, z16 = 0x7a, ib16 = 0x203d, cake16_1 = 0xd83c, cake16_2 = 0xdf82, mathbfA16_1 = 0xd835, mathbfA16_2 = 0xdc00; + std::wstring wstr; + wstr.push_back(0x61); // a + wstr.push_back(0x2e18); // ⸘ + if (sizeof(wchar_t) == 2) { wstr.push_back(mathbfA16_1); wstr.push_back(mathbfA16_2); } // 𝐀, utf16 + else { wstr.push_back((wchar_t) mathbfA32); } // 𝐀, utf32 + wstr.push_back(0x7a); // z + + m.def("good_utf8_string", []() { return std::string(u8"Say utf8\u203d \U0001f382 \U0001d400"); }); // Say utf8‽ 🎂 𝐀 + m.def("good_utf16_string", [=]() { return std::u16string({ b16, ib16, cake16_1, cake16_2, mathbfA16_1, mathbfA16_2, z16 }); }); // b‽🎂𝐀z + m.def("good_utf32_string", [=]() { return std::u32string({ a32, mathbfA32, cake32, ib32, z32 }); }); // a𝐀🎂‽z + m.def("good_wchar_string", [=]() { return wstr; }); // a‽𝐀z + m.def("bad_utf8_string", []() { return std::string("abc\xd0" "def"); }); + m.def("bad_utf16_string", [=]() { return std::u16string({ b16, char16_t(0xd800), z16 }); }); + // Under Python 2.7, invalid unicode UTF-32 characters don't appear to trigger UnicodeDecodeError + if (PY_MAJOR_VERSION >= 3) + m.def("bad_utf32_string", [=]() { return std::u32string({ a32, char32_t(0xd800), z32 }); }); + if (PY_MAJOR_VERSION >= 3 || sizeof(wchar_t) == 2) + m.def("bad_wchar_string", [=]() { return std::wstring({ wchar_t(0x61), wchar_t(0xd800) }); }); + m.def("u8_Z", []() -> char { return 'Z'; }); + m.def("u8_eacute", []() -> char { return '\xe9'; }); + m.def("u16_ibang", [=]() -> char16_t { return ib16; }); + m.def("u32_mathbfA", [=]() -> char32_t { return mathbfA32; }); + m.def("wchar_heart", []() -> wchar_t { return 0x2665; }); + + // test_single_char_arguments + m.attr("wchar_size") = py::cast(sizeof(wchar_t)); + m.def("ord_char", [](char c) -> int { return static_cast<unsigned char>(c); }); + m.def("ord_char16", [](char16_t c) -> uint16_t { return c; }); + m.def("ord_char32", [](char32_t c) -> uint32_t { return c; }); + m.def("ord_wchar", [](wchar_t c) -> int { return c; }); + + // test_bytes_to_string + m.def("strlen", [](char *s) { return strlen(s); }); + m.def("string_length", [](std::string s) { return s.length(); }); + + // test_string_view +#ifdef PYBIND11_HAS_STRING_VIEW + m.attr("has_string_view") = true; + m.def("string_view_print", [](std::string_view s) { py::print(s, s.size()); }); + m.def("string_view16_print", [](std::u16string_view s) { py::print(s, s.size()); }); + m.def("string_view32_print", [](std::u32string_view s) { py::print(s, s.size()); }); + m.def("string_view_chars", [](std::string_view s) { py::list l; for (auto c : s) l.append((std::uint8_t) c); return l; }); + m.def("string_view16_chars", [](std::u16string_view s) { py::list l; for (auto c : s) l.append((int) c); return l; }); + m.def("string_view32_chars", [](std::u32string_view s) { py::list l; for (auto c : s) l.append((int) c); return l; }); + m.def("string_view_return", []() { return std::string_view(u8"utf8 secret \U0001f382"); }); + m.def("string_view16_return", []() { return std::u16string_view(u"utf16 secret \U0001f382"); }); + m.def("string_view32_return", []() { return std::u32string_view(U"utf32 secret \U0001f382"); }); +#endif + + // test_integer_casting + m.def("i32_str", [](std::int32_t v) { return std::to_string(v); }); + m.def("u32_str", [](std::uint32_t v) { return std::to_string(v); }); + m.def("i64_str", [](std::int64_t v) { return std::to_string(v); }); + m.def("u64_str", [](std::uint64_t v) { return std::to_string(v); }); + + // test_tuple + m.def("pair_passthrough", [](std::pair<bool, std::string> input) { + return std::make_pair(input.second, input.first); + }, "Return a pair in reversed order"); + m.def("tuple_passthrough", [](std::tuple<bool, std::string, int> input) { + return std::make_tuple(std::get<2>(input), std::get<1>(input), std::get<0>(input)); + }, "Return a triple in reversed order"); + m.def("empty_tuple", []() { return std::tuple<>(); }); + static std::pair<RValueCaster, RValueCaster> lvpair; + static std::tuple<RValueCaster, RValueCaster, RValueCaster> lvtuple; + static std::pair<RValueCaster, std::tuple<RValueCaster, std::pair<RValueCaster, RValueCaster>>> lvnested; + m.def("rvalue_pair", []() { return std::make_pair(RValueCaster{}, RValueCaster{}); }); + m.def("lvalue_pair", []() -> const decltype(lvpair) & { return lvpair; }); + m.def("rvalue_tuple", []() { return std::make_tuple(RValueCaster{}, RValueCaster{}, RValueCaster{}); }); + m.def("lvalue_tuple", []() -> const decltype(lvtuple) & { return lvtuple; }); + m.def("rvalue_nested", []() { + return std::make_pair(RValueCaster{}, std::make_tuple(RValueCaster{}, std::make_pair(RValueCaster{}, RValueCaster{}))); }); + m.def("lvalue_nested", []() -> const decltype(lvnested) & { return lvnested; }); + + // test_builtins_cast_return_none + m.def("return_none_string", []() -> std::string * { return nullptr; }); + m.def("return_none_char", []() -> const char * { return nullptr; }); + m.def("return_none_bool", []() -> bool * { return nullptr; }); + m.def("return_none_int", []() -> int * { return nullptr; }); + m.def("return_none_float", []() -> float * { return nullptr; }); + + // test_none_deferred + m.def("defer_none_cstring", [](char *) { return false; }); + m.def("defer_none_cstring", [](py::none) { return true; }); + m.def("defer_none_custom", [](UserType *) { return false; }); + m.def("defer_none_custom", [](py::none) { return true; }); + m.def("nodefer_none_void", [](void *) { return true; }); + m.def("nodefer_none_void", [](py::none) { return false; }); + + // test_void_caster + m.def("load_nullptr_t", [](std::nullptr_t) {}); // not useful, but it should still compile + m.def("cast_nullptr_t", []() { return std::nullptr_t{}; }); + + // test_bool_caster + m.def("bool_passthrough", [](bool arg) { return arg; }); + m.def("bool_passthrough_noconvert", [](bool arg) { return arg; }, py::arg().noconvert()); + + // test_reference_wrapper + m.def("refwrap_builtin", [](std::reference_wrapper<int> p) { return 10 * p.get(); }); + m.def("refwrap_usertype", [](std::reference_wrapper<UserType> p) { return p.get().value(); }); + // Not currently supported (std::pair caster has return-by-value cast operator); + // triggers static_assert failure. + //m.def("refwrap_pair", [](std::reference_wrapper<std::pair<int, int>>) { }); + + m.def("refwrap_list", [](bool copy) { + static IncType x1(1), x2(2); + py::list l; + for (auto &f : {std::ref(x1), std::ref(x2)}) { + l.append(py::cast(f, copy ? py::return_value_policy::copy + : py::return_value_policy::reference)); + } + return l; + }, "copy"_a); + + m.def("refwrap_iiw", [](const IncType &w) { return w.value(); }); + m.def("refwrap_call_iiw", [](IncType &w, py::function f) { + py::list l; + l.append(f(std::ref(w))); + l.append(f(std::cref(w))); + IncType x(w.value()); + l.append(f(std::ref(x))); + IncType y(w.value()); + auto r3 = std::ref(y); + l.append(f(r3)); + return l; + }); + + // test_complex + m.def("complex_cast", [](float x) { return "{}"_s.format(x); }); + m.def("complex_cast", [](std::complex<float> x) { return "({}, {})"_s.format(x.real(), x.imag()); }); +} diff --git a/ext/pybind11/tests/test_builtin_casters.py b/ext/pybind11/tests/test_builtin_casters.py new file mode 100644 index 000000000..bc094a381 --- /dev/null +++ b/ext/pybind11/tests/test_builtin_casters.py @@ -0,0 +1,322 @@ +# Python < 3 needs this: coding=utf-8 +import pytest + +from pybind11_tests import builtin_casters as m +from pybind11_tests import UserType, IncType + + +def test_simple_string(): + assert m.string_roundtrip("const char *") == "const char *" + + +def test_unicode_conversion(): + """Tests unicode conversion and error reporting.""" + assert m.good_utf8_string() == u"Say utf8‽ 🎂 𝐀" + assert m.good_utf16_string() == u"b‽🎂𝐀z" + assert m.good_utf32_string() == u"a𝐀🎂‽z" + assert m.good_wchar_string() == u"a⸘𝐀z" + + with pytest.raises(UnicodeDecodeError): + m.bad_utf8_string() + + with pytest.raises(UnicodeDecodeError): + m.bad_utf16_string() + + # These are provided only if they actually fail (they don't when 32-bit and under Python 2.7) + if hasattr(m, "bad_utf32_string"): + with pytest.raises(UnicodeDecodeError): + m.bad_utf32_string() + if hasattr(m, "bad_wchar_string"): + with pytest.raises(UnicodeDecodeError): + m.bad_wchar_string() + + assert m.u8_Z() == 'Z' + assert m.u8_eacute() == u'é' + assert m.u16_ibang() == u'‽' + assert m.u32_mathbfA() == u'𝐀' + assert m.wchar_heart() == u'♥' + + +def test_single_char_arguments(): + """Tests failures for passing invalid inputs to char-accepting functions""" + def toobig_message(r): + return "Character code point not in range({0:#x})".format(r) + toolong_message = "Expected a character, but multi-character string found" + + assert m.ord_char(u'a') == 0x61 # simple ASCII + assert m.ord_char(u'é') == 0xE9 # requires 2 bytes in utf-8, but can be stuffed in a char + with pytest.raises(ValueError) as excinfo: + assert m.ord_char(u'Ā') == 0x100 # requires 2 bytes, doesn't fit in a char + assert str(excinfo.value) == toobig_message(0x100) + with pytest.raises(ValueError) as excinfo: + assert m.ord_char(u'ab') + assert str(excinfo.value) == toolong_message + + assert m.ord_char16(u'a') == 0x61 + assert m.ord_char16(u'é') == 0xE9 + assert m.ord_char16(u'Ā') == 0x100 + assert m.ord_char16(u'‽') == 0x203d + assert m.ord_char16(u'♥') == 0x2665 + with pytest.raises(ValueError) as excinfo: + assert m.ord_char16(u'🎂') == 0x1F382 # requires surrogate pair + assert str(excinfo.value) == toobig_message(0x10000) + with pytest.raises(ValueError) as excinfo: + assert m.ord_char16(u'aa') + assert str(excinfo.value) == toolong_message + + assert m.ord_char32(u'a') == 0x61 + assert m.ord_char32(u'é') == 0xE9 + assert m.ord_char32(u'Ā') == 0x100 + assert m.ord_char32(u'‽') == 0x203d + assert m.ord_char32(u'♥') == 0x2665 + assert m.ord_char32(u'🎂') == 0x1F382 + with pytest.raises(ValueError) as excinfo: + assert m.ord_char32(u'aa') + assert str(excinfo.value) == toolong_message + + assert m.ord_wchar(u'a') == 0x61 + assert m.ord_wchar(u'é') == 0xE9 + assert m.ord_wchar(u'Ā') == 0x100 + assert m.ord_wchar(u'‽') == 0x203d + assert m.ord_wchar(u'♥') == 0x2665 + if m.wchar_size == 2: + with pytest.raises(ValueError) as excinfo: + assert m.ord_wchar(u'🎂') == 0x1F382 # requires surrogate pair + assert str(excinfo.value) == toobig_message(0x10000) + else: + assert m.ord_wchar(u'🎂') == 0x1F382 + with pytest.raises(ValueError) as excinfo: + assert m.ord_wchar(u'aa') + assert str(excinfo.value) == toolong_message + + +def test_bytes_to_string(): + """Tests the ability to pass bytes to C++ string-accepting functions. Note that this is + one-way: the only way to return bytes to Python is via the pybind11::bytes class.""" + # Issue #816 + import sys + byte = bytes if sys.version_info[0] < 3 else str + + assert m.strlen(byte("hi")) == 2 + assert m.string_length(byte("world")) == 5 + assert m.string_length(byte("a\x00b")) == 3 + assert m.strlen(byte("a\x00b")) == 1 # C-string limitation + + # passing in a utf8 encoded string should work + assert m.string_length(u'💩'.encode("utf8")) == 4 + + +@pytest.mark.skipif(not hasattr(m, "has_string_view"), reason="no <string_view>") +def test_string_view(capture): + """Tests support for C++17 string_view arguments and return values""" + assert m.string_view_chars("Hi") == [72, 105] + assert m.string_view_chars("Hi 🎂") == [72, 105, 32, 0xf0, 0x9f, 0x8e, 0x82] + assert m.string_view16_chars("Hi 🎂") == [72, 105, 32, 0xd83c, 0xdf82] + assert m.string_view32_chars("Hi 🎂") == [72, 105, 32, 127874] + + assert m.string_view_return() == "utf8 secret 🎂" + assert m.string_view16_return() == "utf16 secret 🎂" + assert m.string_view32_return() == "utf32 secret 🎂" + + with capture: + m.string_view_print("Hi") + m.string_view_print("utf8 🎂") + m.string_view16_print("utf16 🎂") + m.string_view32_print("utf32 🎂") + assert capture == """ + Hi 2 + utf8 🎂 9 + utf16 🎂 8 + utf32 🎂 7 + """ + + with capture: + m.string_view_print("Hi, ascii") + m.string_view_print("Hi, utf8 🎂") + m.string_view16_print("Hi, utf16 🎂") + m.string_view32_print("Hi, utf32 🎂") + assert capture == """ + Hi, ascii 9 + Hi, utf8 🎂 13 + Hi, utf16 🎂 12 + Hi, utf32 🎂 11 + """ + + +def test_integer_casting(): + """Issue #929 - out-of-range integer values shouldn't be accepted""" + import sys + assert m.i32_str(-1) == "-1" + assert m.i64_str(-1) == "-1" + assert m.i32_str(2000000000) == "2000000000" + assert m.u32_str(2000000000) == "2000000000" + if sys.version_info < (3,): + assert m.i32_str(long(-1)) == "-1" # noqa: F821 undefined name 'long' + assert m.i64_str(long(-1)) == "-1" # noqa: F821 undefined name 'long' + assert m.i64_str(long(-999999999999)) == "-999999999999" # noqa: F821 undefined name + assert m.u64_str(long(999999999999)) == "999999999999" # noqa: F821 undefined name 'long' + else: + assert m.i64_str(-999999999999) == "-999999999999" + assert m.u64_str(999999999999) == "999999999999" + + with pytest.raises(TypeError) as excinfo: + m.u32_str(-1) + assert "incompatible function arguments" in str(excinfo.value) + with pytest.raises(TypeError) as excinfo: + m.u64_str(-1) + assert "incompatible function arguments" in str(excinfo.value) + with pytest.raises(TypeError) as excinfo: + m.i32_str(-3000000000) + assert "incompatible function arguments" in str(excinfo.value) + with pytest.raises(TypeError) as excinfo: + m.i32_str(3000000000) + assert "incompatible function arguments" in str(excinfo.value) + + if sys.version_info < (3,): + with pytest.raises(TypeError) as excinfo: + m.u32_str(long(-1)) # noqa: F821 undefined name 'long' + assert "incompatible function arguments" in str(excinfo.value) + with pytest.raises(TypeError) as excinfo: + m.u64_str(long(-1)) # noqa: F821 undefined name 'long' + assert "incompatible function arguments" in str(excinfo.value) + + +def test_tuple(doc): + """std::pair <-> tuple & std::tuple <-> tuple""" + assert m.pair_passthrough((True, "test")) == ("test", True) + assert m.tuple_passthrough((True, "test", 5)) == (5, "test", True) + # Any sequence can be cast to a std::pair or std::tuple + assert m.pair_passthrough([True, "test"]) == ("test", True) + assert m.tuple_passthrough([True, "test", 5]) == (5, "test", True) + assert m.empty_tuple() == () + + assert doc(m.pair_passthrough) == """ + pair_passthrough(arg0: Tuple[bool, str]) -> Tuple[str, bool] + + Return a pair in reversed order + """ + assert doc(m.tuple_passthrough) == """ + tuple_passthrough(arg0: Tuple[bool, str, int]) -> Tuple[int, str, bool] + + Return a triple in reversed order + """ + + assert m.rvalue_pair() == ("rvalue", "rvalue") + assert m.lvalue_pair() == ("lvalue", "lvalue") + assert m.rvalue_tuple() == ("rvalue", "rvalue", "rvalue") + assert m.lvalue_tuple() == ("lvalue", "lvalue", "lvalue") + assert m.rvalue_nested() == ("rvalue", ("rvalue", ("rvalue", "rvalue"))) + assert m.lvalue_nested() == ("lvalue", ("lvalue", ("lvalue", "lvalue"))) + + +def test_builtins_cast_return_none(): + """Casters produced with PYBIND11_TYPE_CASTER() should convert nullptr to None""" + assert m.return_none_string() is None + assert m.return_none_char() is None + assert m.return_none_bool() is None + assert m.return_none_int() is None + assert m.return_none_float() is None + + +def test_none_deferred(): + """None passed as various argument types should defer to other overloads""" + assert not m.defer_none_cstring("abc") + assert m.defer_none_cstring(None) + assert not m.defer_none_custom(UserType()) + assert m.defer_none_custom(None) + assert m.nodefer_none_void(None) + + +def test_void_caster(): + assert m.load_nullptr_t(None) is None + assert m.cast_nullptr_t() is None + + +def test_reference_wrapper(): + """std::reference_wrapper for builtin and user types""" + assert m.refwrap_builtin(42) == 420 + assert m.refwrap_usertype(UserType(42)) == 42 + + with pytest.raises(TypeError) as excinfo: + m.refwrap_builtin(None) + assert "incompatible function arguments" in str(excinfo.value) + + with pytest.raises(TypeError) as excinfo: + m.refwrap_usertype(None) + assert "incompatible function arguments" in str(excinfo.value) + + a1 = m.refwrap_list(copy=True) + a2 = m.refwrap_list(copy=True) + assert [x.value for x in a1] == [2, 3] + assert [x.value for x in a2] == [2, 3] + assert not a1[0] is a2[0] and not a1[1] is a2[1] + + b1 = m.refwrap_list(copy=False) + b2 = m.refwrap_list(copy=False) + assert [x.value for x in b1] == [1, 2] + assert [x.value for x in b2] == [1, 2] + assert b1[0] is b2[0] and b1[1] is b2[1] + + assert m.refwrap_iiw(IncType(5)) == 5 + assert m.refwrap_call_iiw(IncType(10), m.refwrap_iiw) == [10, 10, 10, 10] + + +def test_complex_cast(): + """std::complex casts""" + assert m.complex_cast(1) == "1.0" + assert m.complex_cast(2j) == "(0.0, 2.0)" + + +def test_bool_caster(): + """Test bool caster implicit conversions.""" + convert, noconvert = m.bool_passthrough, m.bool_passthrough_noconvert + + def require_implicit(v): + pytest.raises(TypeError, noconvert, v) + + def cant_convert(v): + pytest.raises(TypeError, convert, v) + + # straight up bool + assert convert(True) is True + assert convert(False) is False + assert noconvert(True) is True + assert noconvert(False) is False + + # None requires implicit conversion + require_implicit(None) + assert convert(None) is False + + class A(object): + def __init__(self, x): + self.x = x + + def __nonzero__(self): + return self.x + + def __bool__(self): + return self.x + + class B(object): + pass + + # Arbitrary objects are not accepted + cant_convert(object()) + cant_convert(B()) + + # Objects with __nonzero__ / __bool__ defined can be converted + require_implicit(A(True)) + assert convert(A(True)) is True + assert convert(A(False)) is False + + +@pytest.requires_numpy +def test_numpy_bool(): + import numpy as np + convert, noconvert = m.bool_passthrough, m.bool_passthrough_noconvert + + # np.bool_ is not considered implicit + assert convert(np.bool_(True)) is True + assert convert(np.bool_(False)) is False + assert noconvert(np.bool_(True)) is True + assert noconvert(np.bool_(False)) is False diff --git a/ext/pybind11/tests/test_call_policies.cpp b/ext/pybind11/tests/test_call_policies.cpp new file mode 100644 index 000000000..8642188f9 --- /dev/null +++ b/ext/pybind11/tests/test_call_policies.cpp @@ -0,0 +1,98 @@ +/* + tests/test_call_policies.cpp -- keep_alive and call_guard + + Copyright (c) 2016 Wenzel Jakob <wenzel.jakob@epfl.ch> + + All rights reserved. Use of this source code is governed by a + BSD-style license that can be found in the LICENSE file. +*/ + +#include "pybind11_tests.h" + +struct CustomGuard { + static bool enabled; + + CustomGuard() { enabled = true; } + ~CustomGuard() { enabled = false; } + + static const char *report_status() { return enabled ? "guarded" : "unguarded"; } +}; +bool CustomGuard::enabled = false; + +struct DependentGuard { + static bool enabled; + + DependentGuard() { enabled = CustomGuard::enabled; } + ~DependentGuard() { enabled = false; } + + static const char *report_status() { return enabled ? "guarded" : "unguarded"; } +}; +bool DependentGuard::enabled = false; + +TEST_SUBMODULE(call_policies, m) { + // Parent/Child are used in: + // test_keep_alive_argument, test_keep_alive_return_value, test_alive_gc_derived, + // test_alive_gc_multi_derived, test_return_none, test_keep_alive_constructor + class Child { + public: + Child() { py::print("Allocating child."); } + ~Child() { py::print("Releasing child."); } + }; + py::class_<Child>(m, "Child") + .def(py::init<>()); + + class Parent { + public: + Parent() { py::print("Allocating parent."); } + ~Parent() { py::print("Releasing parent."); } + void addChild(Child *) { } + Child *returnChild() { return new Child(); } + Child *returnNullChild() { return nullptr; } + }; + py::class_<Parent>(m, "Parent") + .def(py::init<>()) + .def(py::init([](Child *) { return new Parent(); }), py::keep_alive<1, 2>()) + .def("addChild", &Parent::addChild) + .def("addChildKeepAlive", &Parent::addChild, py::keep_alive<1, 2>()) + .def("returnChild", &Parent::returnChild) + .def("returnChildKeepAlive", &Parent::returnChild, py::keep_alive<1, 0>()) + .def("returnNullChildKeepAliveChild", &Parent::returnNullChild, py::keep_alive<1, 0>()) + .def("returnNullChildKeepAliveParent", &Parent::returnNullChild, py::keep_alive<0, 1>()); + +#if !defined(PYPY_VERSION) + // test_alive_gc + class ParentGC : public Parent { + public: + using Parent::Parent; + }; + py::class_<ParentGC, Parent>(m, "ParentGC", py::dynamic_attr()) + .def(py::init<>()); +#endif + + // test_call_guard + m.def("unguarded_call", &CustomGuard::report_status); + m.def("guarded_call", &CustomGuard::report_status, py::call_guard<CustomGuard>()); + + m.def("multiple_guards_correct_order", []() { + return CustomGuard::report_status() + std::string(" & ") + DependentGuard::report_status(); + }, py::call_guard<CustomGuard, DependentGuard>()); + + m.def("multiple_guards_wrong_order", []() { + return DependentGuard::report_status() + std::string(" & ") + CustomGuard::report_status(); + }, py::call_guard<DependentGuard, CustomGuard>()); + +#if defined(WITH_THREAD) && !defined(PYPY_VERSION) + // `py::call_guard<py::gil_scoped_release>()` should work in PyPy as well, + // but it's unclear how to test it without `PyGILState_GetThisThreadState`. + auto report_gil_status = []() { + auto is_gil_held = false; + if (auto tstate = py::detail::get_thread_state_unchecked()) + is_gil_held = (tstate == PyGILState_GetThisThreadState()); + + return is_gil_held ? "GIL held" : "GIL released"; + }; + + m.def("with_gil", report_gil_status); + m.def("without_gil", report_gil_status, py::call_guard<py::gil_scoped_release>()); +#endif +} diff --git a/ext/pybind11/tests/test_call_policies.py b/ext/pybind11/tests/test_call_policies.py new file mode 100644 index 000000000..7c835599c --- /dev/null +++ b/ext/pybind11/tests/test_call_policies.py @@ -0,0 +1,187 @@ +import pytest +from pybind11_tests import call_policies as m +from pybind11_tests import ConstructorStats + + +def test_keep_alive_argument(capture): + n_inst = ConstructorStats.detail_reg_inst() + with capture: + p = m.Parent() + assert capture == "Allocating parent." + with capture: + p.addChild(m.Child()) + assert ConstructorStats.detail_reg_inst() == n_inst + 1 + assert capture == """ + Allocating child. + Releasing child. + """ + with capture: + del p + assert ConstructorStats.detail_reg_inst() == n_inst + assert capture == "Releasing parent." + + with capture: + p = m.Parent() + assert capture == "Allocating parent." + with capture: + p.addChildKeepAlive(m.Child()) + assert ConstructorStats.detail_reg_inst() == n_inst + 2 + assert capture == "Allocating child." + with capture: + del p + assert ConstructorStats.detail_reg_inst() == n_inst + assert capture == """ + Releasing parent. + Releasing child. + """ + + +def test_keep_alive_return_value(capture): + n_inst = ConstructorStats.detail_reg_inst() + with capture: + p = m.Parent() + assert capture == "Allocating parent." + with capture: + p.returnChild() + assert ConstructorStats.detail_reg_inst() == n_inst + 1 + assert capture == """ + Allocating child. + Releasing child. + """ + with capture: + del p + assert ConstructorStats.detail_reg_inst() == n_inst + assert capture == "Releasing parent." + + with capture: + p = m.Parent() + assert capture == "Allocating parent." + with capture: + p.returnChildKeepAlive() + assert ConstructorStats.detail_reg_inst() == n_inst + 2 + assert capture == "Allocating child." + with capture: + del p + assert ConstructorStats.detail_reg_inst() == n_inst + assert capture == """ + Releasing parent. + Releasing child. + """ + + +# https://bitbucket.org/pypy/pypy/issues/2447 +@pytest.unsupported_on_pypy +def test_alive_gc(capture): + n_inst = ConstructorStats.detail_reg_inst() + p = m.ParentGC() + p.addChildKeepAlive(m.Child()) + assert ConstructorStats.detail_reg_inst() == n_inst + 2 + lst = [p] + lst.append(lst) # creates a circular reference + with capture: + del p, lst + assert ConstructorStats.detail_reg_inst() == n_inst + assert capture == """ + Releasing parent. + Releasing child. + """ + + +def test_alive_gc_derived(capture): + class Derived(m.Parent): + pass + + n_inst = ConstructorStats.detail_reg_inst() + p = Derived() + p.addChildKeepAlive(m.Child()) + assert ConstructorStats.detail_reg_inst() == n_inst + 2 + lst = [p] + lst.append(lst) # creates a circular reference + with capture: + del p, lst + assert ConstructorStats.detail_reg_inst() == n_inst + assert capture == """ + Releasing parent. + Releasing child. + """ + + +def test_alive_gc_multi_derived(capture): + class Derived(m.Parent, m.Child): + def __init__(self): + m.Parent.__init__(self) + m.Child.__init__(self) + + n_inst = ConstructorStats.detail_reg_inst() + p = Derived() + p.addChildKeepAlive(m.Child()) + # +3 rather than +2 because Derived corresponds to two registered instances + assert ConstructorStats.detail_reg_inst() == n_inst + 3 + lst = [p] + lst.append(lst) # creates a circular reference + with capture: + del p, lst + assert ConstructorStats.detail_reg_inst() == n_inst + assert capture == """ + Releasing parent. + Releasing child. + Releasing child. + """ + + +def test_return_none(capture): + n_inst = ConstructorStats.detail_reg_inst() + with capture: + p = m.Parent() + assert capture == "Allocating parent." + with capture: + p.returnNullChildKeepAliveChild() + assert ConstructorStats.detail_reg_inst() == n_inst + 1 + assert capture == "" + with capture: + del p + assert ConstructorStats.detail_reg_inst() == n_inst + assert capture == "Releasing parent." + + with capture: + p = m.Parent() + assert capture == "Allocating parent." + with capture: + p.returnNullChildKeepAliveParent() + assert ConstructorStats.detail_reg_inst() == n_inst + 1 + assert capture == "" + with capture: + del p + assert ConstructorStats.detail_reg_inst() == n_inst + assert capture == "Releasing parent." + + +def test_keep_alive_constructor(capture): + n_inst = ConstructorStats.detail_reg_inst() + + with capture: + p = m.Parent(m.Child()) + assert ConstructorStats.detail_reg_inst() == n_inst + 2 + assert capture == """ + Allocating child. + Allocating parent. + """ + with capture: + del p + assert ConstructorStats.detail_reg_inst() == n_inst + assert capture == """ + Releasing parent. + Releasing child. + """ + + +def test_call_guard(): + assert m.unguarded_call() == "unguarded" + assert m.guarded_call() == "guarded" + + assert m.multiple_guards_correct_order() == "guarded & guarded" + assert m.multiple_guards_wrong_order() == "unguarded & guarded" + + if hasattr(m, "with_gil"): + assert m.with_gil() == "GIL held" + assert m.without_gil() == "GIL released" diff --git a/ext/pybind11/tests/test_callbacks.cpp b/ext/pybind11/tests/test_callbacks.cpp index f89cc1c79..273eacc30 100644 --- a/ext/pybind11/tests/test_callbacks.cpp +++ b/ext/pybind11/tests/test_callbacks.cpp @@ -12,97 +12,20 @@ #include <pybind11/functional.h> -py::object test_callback1(py::object func) { - return func(); -} - -py::tuple test_callback2(py::object func) { - return func("Hello", 'x', true, 5); -} - -std::string test_callback3(const std::function<int(int)> &func) { - return "func(43) = " + std::to_string(func(43)); -} - -std::function<int(int)> test_callback4() { - return [](int i) { return i+1; }; -} - -py::cpp_function test_callback5() { - return py::cpp_function([](int i) { return i+1; }, - py::arg("number")); -} - int dummy_function(int i) { return i + 1; } -int dummy_function2(int i, int j) { return i + j; } -std::function<int(int)> roundtrip(std::function<int(int)> f, bool expect_none = false) { - if (expect_none && f) { - throw std::runtime_error("Expected None to be converted to empty std::function"); - } - return f; -} -std::string test_dummy_function(const std::function<int(int)> &f) { - using fn_type = int (*)(int); - auto result = f.target<fn_type>(); - if (!result) { - auto r = f(1); - return "can't convert to function pointer: eval(1) = " + std::to_string(r); - } else if (*result == dummy_function) { - auto r = (*result)(1); - return "matches dummy_function: eval(1) = " + std::to_string(r); - } else { - return "argument does NOT match dummy_function. This should never happen!"; - } -} +TEST_SUBMODULE(callbacks, m) { + // test_callbacks, test_function_signatures + m.def("test_callback1", [](py::object func) { return func(); }); + m.def("test_callback2", [](py::object func) { return func("Hello", 'x', true, 5); }); + m.def("test_callback3", [](const std::function<int(int)> &func) { + return "func(43) = " + std::to_string(func(43)); }); + m.def("test_callback4", []() -> std::function<int(int)> { return [](int i) { return i+1; }; }); + m.def("test_callback5", []() { + return py::cpp_function([](int i) { return i+1; }, py::arg("number")); + }); -struct Payload { - Payload() { - print_default_created(this); - } - ~Payload() { - print_destroyed(this); - } - Payload(const Payload &) { - print_copy_created(this); - } - Payload(Payload &&) { - print_move_created(this); - } -}; - -/// Something to trigger a conversion error -struct Unregistered {}; - -class AbstractBase { -public: - virtual unsigned int func() = 0; -}; - -void func_accepting_func_accepting_base(std::function<double(AbstractBase&)>) { } - -struct MovableObject { - bool valid = true; - - MovableObject() = default; - MovableObject(const MovableObject &) = default; - MovableObject &operator=(const MovableObject &) = default; - MovableObject(MovableObject &&o) : valid(o.valid) { o.valid = false; } - MovableObject &operator=(MovableObject &&o) { - valid = o.valid; - o.valid = false; - return *this; - } -}; - -test_initializer callbacks([](py::module &m) { - m.def("test_callback1", &test_callback1); - m.def("test_callback2", &test_callback2); - m.def("test_callback3", &test_callback3); - m.def("test_callback4", &test_callback4); - m.def("test_callback5", &test_callback5); - - // Test keyword args and generalized unpacking + // test_keyword_args_and_generalized_unpacking m.def("test_tuple_unpacking", [](py::function f) { auto t1 = py::make_tuple(2, 3); auto t2 = py::make_tuple(5, 6); @@ -144,13 +67,22 @@ test_initializer callbacks([](py::module &m) { }); m.def("test_arg_conversion_error1", [](py::function f) { - f(234, Unregistered(), "kw"_a=567); + f(234, UnregisteredType(), "kw"_a=567); }); m.def("test_arg_conversion_error2", [](py::function f) { - f(234, "expected_name"_a=Unregistered(), "kw"_a=567); + f(234, "expected_name"_a=UnregisteredType(), "kw"_a=567); }); + // test_lambda_closure_cleanup + struct Payload { + Payload() { print_default_created(this); } + ~Payload() { print_destroyed(this); } + Payload(const Payload &) { print_copy_created(this); } + Payload(Payload &&) { print_move_created(this); } + }; + // Export the payload constructor statistics for testing purposes: + m.def("payload_cstats", &ConstructorStats::get<Payload>); /* Test cleanup of lambda closure */ m.def("test_cleanup", []() -> std::function<void(void)> { Payload p; @@ -161,22 +93,57 @@ test_initializer callbacks([](py::module &m) { }; }); + // test_cpp_function_roundtrip /* Test if passing a function pointer from C++ -> Python -> C++ yields the original pointer */ m.def("dummy_function", &dummy_function); - m.def("dummy_function2", &dummy_function2); - m.def("roundtrip", &roundtrip, py::arg("f"), py::arg("expect_none")=false); - m.def("test_dummy_function", &test_dummy_function); - // Export the payload constructor statistics for testing purposes: - m.def("payload_cstats", &ConstructorStats::get<Payload>); - - m.def("func_accepting_func_accepting_base", - func_accepting_func_accepting_base); + m.def("dummy_function2", [](int i, int j) { return i + j; }); + m.def("roundtrip", [](std::function<int(int)> f, bool expect_none = false) { + if (expect_none && f) + throw std::runtime_error("Expected None to be converted to empty std::function"); + return f; + }, py::arg("f"), py::arg("expect_none")=false); + m.def("test_dummy_function", [](const std::function<int(int)> &f) -> std::string { + using fn_type = int (*)(int); + auto result = f.target<fn_type>(); + if (!result) { + auto r = f(1); + return "can't convert to function pointer: eval(1) = " + std::to_string(r); + } else if (*result == dummy_function) { + auto r = (*result)(1); + return "matches dummy_function: eval(1) = " + std::to_string(r); + } else { + return "argument does NOT match dummy_function. This should never happen!"; + } + }); + class AbstractBase { public: virtual unsigned int func() = 0; }; + m.def("func_accepting_func_accepting_base", [](std::function<double(AbstractBase&)>) { }); + + struct MovableObject { + bool valid = true; + + MovableObject() = default; + MovableObject(const MovableObject &) = default; + MovableObject &operator=(const MovableObject &) = default; + MovableObject(MovableObject &&o) : valid(o.valid) { o.valid = false; } + MovableObject &operator=(MovableObject &&o) { + valid = o.valid; + o.valid = false; + return *this; + } + }; py::class_<MovableObject>(m, "MovableObject"); + // test_movable_object m.def("callback_with_movable", [](std::function<void(MovableObject &)> f) { auto x = MovableObject(); f(x); // lvalue reference shouldn't move out object return x.valid; // must still return `true` - }); -}); + }); + + // test_bound_method_callback + struct CppBoundMethodTest {}; + py::class_<CppBoundMethodTest>(m, "CppBoundMethodTest") + .def(py::init<>()) + .def("triple", [](CppBoundMethodTest &, int val) { return 3 * val; }); +} diff --git a/ext/pybind11/tests/test_callbacks.py b/ext/pybind11/tests/test_callbacks.py index f94e7b64c..93c42c22b 100644 --- a/ext/pybind11/tests/test_callbacks.py +++ b/ext/pybind11/tests/test_callbacks.py @@ -1,10 +1,9 @@ import pytest +from pybind11_tests import callbacks as m def test_callbacks(): from functools import partial - from pybind11_tests import (test_callback1, test_callback2, test_callback3, - test_callback4, test_callback5) def func1(): return "func1" @@ -15,58 +14,65 @@ def test_callbacks(): def func3(a): return "func3({})".format(a) - assert test_callback1(func1) == "func1" - assert test_callback2(func2) == ("func2", "Hello", "x", True, 5) - assert test_callback1(partial(func2, 1, 2, 3, 4)) == ("func2", 1, 2, 3, 4) - assert test_callback1(partial(func3, "partial")) == "func3(partial)" - assert test_callback3(lambda i: i + 1) == "func(43) = 44" + assert m.test_callback1(func1) == "func1" + assert m.test_callback2(func2) == ("func2", "Hello", "x", True, 5) + assert m.test_callback1(partial(func2, 1, 2, 3, 4)) == ("func2", 1, 2, 3, 4) + assert m.test_callback1(partial(func3, "partial")) == "func3(partial)" + assert m.test_callback3(lambda i: i + 1) == "func(43) = 44" - f = test_callback4() + f = m.test_callback4() assert f(43) == 44 - f = test_callback5() + f = m.test_callback5() assert f(number=43) == 44 +def test_bound_method_callback(): + # Bound Python method: + class MyClass: + def double(self, val): + return 2 * val + + z = MyClass() + assert m.test_callback3(z.double) == "func(43) = 86" + + z = m.CppBoundMethodTest() + assert m.test_callback3(z.triple) == "func(43) = 129" + + def test_keyword_args_and_generalized_unpacking(): - from pybind11_tests import (test_tuple_unpacking, test_dict_unpacking, test_keyword_args, - test_unpacking_and_keywords1, test_unpacking_and_keywords2, - test_unpacking_error1, test_unpacking_error2, - test_arg_conversion_error1, test_arg_conversion_error2) def f(*args, **kwargs): return args, kwargs - assert test_tuple_unpacking(f) == (("positional", 1, 2, 3, 4, 5, 6), {}) - assert test_dict_unpacking(f) == (("positional", 1), {"key": "value", "a": 1, "b": 2}) - assert test_keyword_args(f) == ((), {"x": 10, "y": 20}) - assert test_unpacking_and_keywords1(f) == ((1, 2), {"c": 3, "d": 4}) - assert test_unpacking_and_keywords2(f) == ( + assert m.test_tuple_unpacking(f) == (("positional", 1, 2, 3, 4, 5, 6), {}) + assert m.test_dict_unpacking(f) == (("positional", 1), {"key": "value", "a": 1, "b": 2}) + assert m.test_keyword_args(f) == ((), {"x": 10, "y": 20}) + assert m.test_unpacking_and_keywords1(f) == ((1, 2), {"c": 3, "d": 4}) + assert m.test_unpacking_and_keywords2(f) == ( ("positional", 1, 2, 3, 4, 5), {"key": "value", "a": 1, "b": 2, "c": 3, "d": 4, "e": 5} ) with pytest.raises(TypeError) as excinfo: - test_unpacking_error1(f) + m.test_unpacking_error1(f) assert "Got multiple values for keyword argument" in str(excinfo.value) with pytest.raises(TypeError) as excinfo: - test_unpacking_error2(f) + m.test_unpacking_error2(f) assert "Got multiple values for keyword argument" in str(excinfo.value) with pytest.raises(RuntimeError) as excinfo: - test_arg_conversion_error1(f) + m.test_arg_conversion_error1(f) assert "Unable to convert call argument" in str(excinfo.value) with pytest.raises(RuntimeError) as excinfo: - test_arg_conversion_error2(f) + m.test_arg_conversion_error2(f) assert "Unable to convert call argument" in str(excinfo.value) def test_lambda_closure_cleanup(): - from pybind11_tests import test_cleanup, payload_cstats - - test_cleanup() - cstats = payload_cstats() + m.test_cleanup() + cstats = m.payload_cstats() assert cstats.alive() == 0 assert cstats.copy_constructions == 1 assert cstats.move_constructions >= 1 @@ -74,31 +80,28 @@ def test_lambda_closure_cleanup(): def test_cpp_function_roundtrip(): """Test if passing a function pointer from C++ -> Python -> C++ yields the original pointer""" - from pybind11_tests import dummy_function, dummy_function2, test_dummy_function, roundtrip - assert test_dummy_function(dummy_function) == "matches dummy_function: eval(1) = 2" - assert test_dummy_function(roundtrip(dummy_function)) == "matches dummy_function: eval(1) = 2" - assert roundtrip(None, expect_none=True) is None - assert test_dummy_function(lambda x: x + 2) == "can't convert to function pointer: eval(1) = 3" + assert m.test_dummy_function(m.dummy_function) == "matches dummy_function: eval(1) = 2" + assert (m.test_dummy_function(m.roundtrip(m.dummy_function)) == + "matches dummy_function: eval(1) = 2") + assert m.roundtrip(None, expect_none=True) is None + assert (m.test_dummy_function(lambda x: x + 2) == + "can't convert to function pointer: eval(1) = 3") with pytest.raises(TypeError) as excinfo: - test_dummy_function(dummy_function2) + m.test_dummy_function(m.dummy_function2) assert "incompatible function arguments" in str(excinfo.value) with pytest.raises(TypeError) as excinfo: - test_dummy_function(lambda x, y: x + y) + m.test_dummy_function(lambda x, y: x + y) assert any(s in str(excinfo.value) for s in ("missing 1 required positional argument", "takes exactly 2 arguments")) def test_function_signatures(doc): - from pybind11_tests import test_callback3, test_callback4 - - assert doc(test_callback3) == "test_callback3(arg0: Callable[[int], int]) -> str" - assert doc(test_callback4) == "test_callback4() -> Callable[[int], int]" + assert doc(m.test_callback3) == "test_callback3(arg0: Callable[[int], int]) -> str" + assert doc(m.test_callback4) == "test_callback4() -> Callable[[int], int]" def test_movable_object(): - from pybind11_tests import callback_with_movable - - assert callback_with_movable(lambda _: None) is True + assert m.callback_with_movable(lambda _: None) is True diff --git a/ext/pybind11/tests/test_chrono.cpp b/ext/pybind11/tests/test_chrono.cpp index fcc1b6185..195a93bba 100644 --- a/ext/pybind11/tests/test_chrono.cpp +++ b/ext/pybind11/tests/test_chrono.cpp @@ -8,58 +8,40 @@ BSD-style license that can be found in the LICENSE file. */ - #include "pybind11_tests.h" -#include "constructor_stats.h" #include <pybind11/chrono.h> -// Return the current time off the wall clock -std::chrono::system_clock::time_point test_chrono1() { - return std::chrono::system_clock::now(); -} +TEST_SUBMODULE(chrono, m) { + using system_time = std::chrono::system_clock::time_point; + using steady_time = std::chrono::steady_clock::time_point; + // test_chrono_system_clock + // Return the current time off the wall clock + m.def("test_chrono1", []() { return std::chrono::system_clock::now(); }); -// Round trip the passed in system clock time -std::chrono::system_clock::time_point test_chrono2(std::chrono::system_clock::time_point t) { - return t; -} - -// Round trip the passed in duration -std::chrono::system_clock::duration test_chrono3(std::chrono::system_clock::duration d) { - return d; -} + // test_chrono_system_clock_roundtrip + // Round trip the passed in system clock time + m.def("test_chrono2", [](system_time t) { return t; }); -// Difference between two passed in time_points -std::chrono::system_clock::duration test_chrono4(std::chrono::system_clock::time_point a, std::chrono::system_clock::time_point b) { - return a - b; -} + // test_chrono_duration_roundtrip + // Round trip the passed in duration + m.def("test_chrono3", [](std::chrono::system_clock::duration d) { return d; }); -// Return the current time off the steady_clock -std::chrono::steady_clock::time_point test_chrono5() { - return std::chrono::steady_clock::now(); -} + // test_chrono_duration_subtraction_equivalence + // Difference between two passed in time_points + m.def("test_chrono4", [](system_time a, system_time b) { return a - b; }); -// Round trip a steady clock timepoint -std::chrono::steady_clock::time_point test_chrono6(std::chrono::steady_clock::time_point t) { - return t; -} + // test_chrono_steady_clock + // Return the current time off the steady_clock + m.def("test_chrono5", []() { return std::chrono::steady_clock::now(); }); -// Roundtrip a duration in microseconds from a float argument -std::chrono::microseconds test_chrono7(std::chrono::microseconds t) { - return t; -} + // test_chrono_steady_clock_roundtrip + // Round trip a steady clock timepoint + m.def("test_chrono6", [](steady_time t) { return t; }); -// Float durations (issue #719) -std::chrono::duration<double> test_chrono_float_diff(std::chrono::duration<float> a, std::chrono::duration<float> b) { - return a - b; + // test_floating_point_duration + // Roundtrip a duration in microseconds from a float argument + m.def("test_chrono7", [](std::chrono::microseconds t) { return t; }); + // Float durations (issue #719) + m.def("test_chrono_float_diff", [](std::chrono::duration<float> a, std::chrono::duration<float> b) { + return a - b; }); } - -test_initializer chrono([] (py::module &m) { - m.def("test_chrono1", &test_chrono1); - m.def("test_chrono2", &test_chrono2); - m.def("test_chrono3", &test_chrono3); - m.def("test_chrono4", &test_chrono4); - m.def("test_chrono5", &test_chrono5); - m.def("test_chrono6", &test_chrono6); - m.def("test_chrono7", &test_chrono7); - m.def("test_chrono_float_diff", &test_chrono_float_diff); -}); diff --git a/ext/pybind11/tests/test_chrono.py b/ext/pybind11/tests/test_chrono.py index 55094edbf..2b75bd191 100644 --- a/ext/pybind11/tests/test_chrono.py +++ b/ext/pybind11/tests/test_chrono.py @@ -1,11 +1,11 @@ +from pybind11_tests import chrono as m +import datetime def test_chrono_system_clock(): - from pybind11_tests import test_chrono1 - import datetime # Get the time from both c++ and datetime - date1 = test_chrono1() + date1 = m.test_chrono1() date2 = datetime.datetime.today() # The returned value should be a datetime @@ -25,13 +25,10 @@ def test_chrono_system_clock(): def test_chrono_system_clock_roundtrip(): - from pybind11_tests import test_chrono2 - import datetime - date1 = datetime.datetime.today() # Roundtrip the time - date2 = test_chrono2(date1) + date2 = m.test_chrono2(date1) # The returned value should be a datetime assert isinstance(date2, datetime.datetime) @@ -44,8 +41,6 @@ def test_chrono_system_clock_roundtrip(): def test_chrono_duration_roundtrip(): - from pybind11_tests import test_chrono3 - import datetime # Get the difference between two times (a timedelta) date1 = datetime.datetime.today() @@ -55,7 +50,7 @@ def test_chrono_duration_roundtrip(): # Make sure this is a timedelta assert isinstance(diff, datetime.timedelta) - cpp_diff = test_chrono3(diff) + cpp_diff = m.test_chrono3(diff) assert cpp_diff.days == diff.days assert cpp_diff.seconds == diff.seconds @@ -63,14 +58,12 @@ def test_chrono_duration_roundtrip(): def test_chrono_duration_subtraction_equivalence(): - from pybind11_tests import test_chrono4 - import datetime date1 = datetime.datetime.today() date2 = datetime.datetime.today() diff = date2 - date1 - cpp_diff = test_chrono4(date2, date1) + cpp_diff = m.test_chrono4(date2, date1) assert cpp_diff.days == diff.days assert cpp_diff.seconds == diff.seconds @@ -78,22 +71,13 @@ def test_chrono_duration_subtraction_equivalence(): def test_chrono_steady_clock(): - from pybind11_tests import test_chrono5 - import datetime - - time1 = test_chrono5() - time2 = test_chrono5() - + time1 = m.test_chrono5() assert isinstance(time1, datetime.timedelta) - assert isinstance(time2, datetime.timedelta) def test_chrono_steady_clock_roundtrip(): - from pybind11_tests import test_chrono6 - import datetime - time1 = datetime.timedelta(days=10, seconds=10, microseconds=100) - time2 = test_chrono6(time1) + time2 = m.test_chrono6(time1) assert isinstance(time2, datetime.timedelta) @@ -104,17 +88,14 @@ def test_chrono_steady_clock_roundtrip(): def test_floating_point_duration(): - from pybind11_tests import test_chrono7, test_chrono_float_diff - import datetime - - # Test using 35.525123 seconds as an example floating point number in seconds - time = test_chrono7(35.525123) + # Test using a floating point number in seconds + time = m.test_chrono7(35.525123) assert isinstance(time, datetime.timedelta) assert time.seconds == 35 assert 525122 <= time.microseconds <= 525123 - diff = test_chrono_float_diff(43.789012, 1.123456) + diff = m.test_chrono_float_diff(43.789012, 1.123456) assert diff.seconds == 42 assert 665556 <= diff.microseconds <= 665557 diff --git a/ext/pybind11/tests/test_class.cpp b/ext/pybind11/tests/test_class.cpp new file mode 100644 index 000000000..222190617 --- /dev/null +++ b/ext/pybind11/tests/test_class.cpp @@ -0,0 +1,357 @@ +/* + tests/test_class.cpp -- test py::class_ definitions and basic functionality + + Copyright (c) 2016 Wenzel Jakob <wenzel.jakob@epfl.ch> + + All rights reserved. Use of this source code is governed by a + BSD-style license that can be found in the LICENSE file. +*/ + +#include "pybind11_tests.h" +#include "constructor_stats.h" +#include "local_bindings.h" + +TEST_SUBMODULE(class_, m) { + // test_instance + struct NoConstructor { + static NoConstructor *new_instance() { + auto *ptr = new NoConstructor(); + print_created(ptr, "via new_instance"); + return ptr; + } + ~NoConstructor() { print_destroyed(this); } + }; + + py::class_<NoConstructor>(m, "NoConstructor") + .def_static("new_instance", &NoConstructor::new_instance, "Return an instance"); + + // test_inheritance + class Pet { + public: + Pet(const std::string &name, const std::string &species) + : m_name(name), m_species(species) {} + std::string name() const { return m_name; } + std::string species() const { return m_species; } + private: + std::string m_name; + std::string m_species; + }; + + class Dog : public Pet { + public: + Dog(const std::string &name) : Pet(name, "dog") {} + std::string bark() const { return "Woof!"; } + }; + + class Rabbit : public Pet { + public: + Rabbit(const std::string &name) : Pet(name, "parrot") {} + }; + + class Hamster : public Pet { + public: + Hamster(const std::string &name) : Pet(name, "rodent") {} + }; + + class Chimera : public Pet { + Chimera() : Pet("Kimmy", "chimera") {} + }; + + py::class_<Pet> pet_class(m, "Pet"); + pet_class + .def(py::init<std::string, std::string>()) + .def("name", &Pet::name) + .def("species", &Pet::species); + + /* One way of declaring a subclass relationship: reference parent's class_ object */ + py::class_<Dog>(m, "Dog", pet_class) + .def(py::init<std::string>()); + + /* Another way of declaring a subclass relationship: reference parent's C++ type */ + py::class_<Rabbit, Pet>(m, "Rabbit") + .def(py::init<std::string>()); + + /* And another: list parent in class template arguments */ + py::class_<Hamster, Pet>(m, "Hamster") + .def(py::init<std::string>()); + + /* Constructors are not inherited by default */ + py::class_<Chimera, Pet>(m, "Chimera"); + + m.def("pet_name_species", [](const Pet &pet) { return pet.name() + " is a " + pet.species(); }); + m.def("dog_bark", [](const Dog &dog) { return dog.bark(); }); + + // test_automatic_upcasting + struct BaseClass { virtual ~BaseClass() {} }; + struct DerivedClass1 : BaseClass { }; + struct DerivedClass2 : BaseClass { }; + + py::class_<BaseClass>(m, "BaseClass").def(py::init<>()); + py::class_<DerivedClass1>(m, "DerivedClass1").def(py::init<>()); + py::class_<DerivedClass2>(m, "DerivedClass2").def(py::init<>()); + + m.def("return_class_1", []() -> BaseClass* { return new DerivedClass1(); }); + m.def("return_class_2", []() -> BaseClass* { return new DerivedClass2(); }); + m.def("return_class_n", [](int n) -> BaseClass* { + if (n == 1) return new DerivedClass1(); + if (n == 2) return new DerivedClass2(); + return new BaseClass(); + }); + m.def("return_none", []() -> BaseClass* { return nullptr; }); + + // test_isinstance + m.def("check_instances", [](py::list l) { + return py::make_tuple( + py::isinstance<py::tuple>(l[0]), + py::isinstance<py::dict>(l[1]), + py::isinstance<Pet>(l[2]), + py::isinstance<Pet>(l[3]), + py::isinstance<Dog>(l[4]), + py::isinstance<Rabbit>(l[5]), + py::isinstance<UnregisteredType>(l[6]) + ); + }); + + // test_mismatched_holder + struct MismatchBase1 { }; + struct MismatchDerived1 : MismatchBase1 { }; + + struct MismatchBase2 { }; + struct MismatchDerived2 : MismatchBase2 { }; + + m.def("mismatched_holder_1", []() { + auto mod = py::module::import("__main__"); + py::class_<MismatchBase1, std::shared_ptr<MismatchBase1>>(mod, "MismatchBase1"); + py::class_<MismatchDerived1, MismatchBase1>(mod, "MismatchDerived1"); + }); + m.def("mismatched_holder_2", []() { + auto mod = py::module::import("__main__"); + py::class_<MismatchBase2>(mod, "MismatchBase2"); + py::class_<MismatchDerived2, std::shared_ptr<MismatchDerived2>, + MismatchBase2>(mod, "MismatchDerived2"); + }); + + // test_override_static + // #511: problem with inheritance + overwritten def_static + struct MyBase { + static std::unique_ptr<MyBase> make() { + return std::unique_ptr<MyBase>(new MyBase()); + } + }; + + struct MyDerived : MyBase { + static std::unique_ptr<MyDerived> make() { + return std::unique_ptr<MyDerived>(new MyDerived()); + } + }; + + py::class_<MyBase>(m, "MyBase") + .def_static("make", &MyBase::make); + + py::class_<MyDerived, MyBase>(m, "MyDerived") + .def_static("make", &MyDerived::make) + .def_static("make2", &MyDerived::make); + + // test_implicit_conversion_life_support + struct ConvertibleFromUserType { + int i; + + ConvertibleFromUserType(UserType u) : i(u.value()) { } + }; + + py::class_<ConvertibleFromUserType>(m, "AcceptsUserType") + .def(py::init<UserType>()); + py::implicitly_convertible<UserType, ConvertibleFromUserType>(); + + m.def("implicitly_convert_argument", [](const ConvertibleFromUserType &r) { return r.i; }); + m.def("implicitly_convert_variable", [](py::object o) { + // `o` is `UserType` and `r` is a reference to a temporary created by implicit + // conversion. This is valid when called inside a bound function because the temp + // object is attached to the same life support system as the arguments. + const auto &r = o.cast<const ConvertibleFromUserType &>(); + return r.i; + }); + m.add_object("implicitly_convert_variable_fail", [&] { + auto f = [](PyObject *, PyObject *args) -> PyObject * { + auto o = py::reinterpret_borrow<py::tuple>(args)[0]; + try { // It should fail here because there is no life support. + o.cast<const ConvertibleFromUserType &>(); + } catch (const py::cast_error &e) { + return py::str(e.what()).release().ptr(); + } + return py::str().release().ptr(); + }; + + auto def = new PyMethodDef{"f", f, METH_VARARGS, nullptr}; + return py::reinterpret_steal<py::object>(PyCFunction_NewEx(def, nullptr, m.ptr())); + }()); + + // test_operator_new_delete + struct HasOpNewDel { + std::uint64_t i; + static void *operator new(size_t s) { py::print("A new", s); return ::operator new(s); } + static void *operator new(size_t s, void *ptr) { py::print("A placement-new", s); return ptr; } + static void operator delete(void *p) { py::print("A delete"); return ::operator delete(p); } + }; + struct HasOpNewDelSize { + std::uint32_t i; + static void *operator new(size_t s) { py::print("B new", s); return ::operator new(s); } + static void *operator new(size_t s, void *ptr) { py::print("B placement-new", s); return ptr; } + static void operator delete(void *p, size_t s) { py::print("B delete", s); return ::operator delete(p); } + }; + struct AliasedHasOpNewDelSize { + std::uint64_t i; + static void *operator new(size_t s) { py::print("C new", s); return ::operator new(s); } + static void *operator new(size_t s, void *ptr) { py::print("C placement-new", s); return ptr; } + static void operator delete(void *p, size_t s) { py::print("C delete", s); return ::operator delete(p); } + virtual ~AliasedHasOpNewDelSize() = default; + }; + struct PyAliasedHasOpNewDelSize : AliasedHasOpNewDelSize { + PyAliasedHasOpNewDelSize() = default; + PyAliasedHasOpNewDelSize(int) { } + std::uint64_t j; + }; + struct HasOpNewDelBoth { + std::uint32_t i[8]; + static void *operator new(size_t s) { py::print("D new", s); return ::operator new(s); } + static void *operator new(size_t s, void *ptr) { py::print("D placement-new", s); return ptr; } + static void operator delete(void *p) { py::print("D delete"); return ::operator delete(p); } + static void operator delete(void *p, size_t s) { py::print("D wrong delete", s); return ::operator delete(p); } + }; + py::class_<HasOpNewDel>(m, "HasOpNewDel").def(py::init<>()); + py::class_<HasOpNewDelSize>(m, "HasOpNewDelSize").def(py::init<>()); + py::class_<HasOpNewDelBoth>(m, "HasOpNewDelBoth").def(py::init<>()); + py::class_<AliasedHasOpNewDelSize, PyAliasedHasOpNewDelSize> aliased(m, "AliasedHasOpNewDelSize"); + aliased.def(py::init<>()); + aliased.attr("size_noalias") = py::int_(sizeof(AliasedHasOpNewDelSize)); + aliased.attr("size_alias") = py::int_(sizeof(PyAliasedHasOpNewDelSize)); + + // This test is actually part of test_local_bindings (test_duplicate_local), but we need a + // definition in a different compilation unit within the same module: + bind_local<LocalExternal, 17>(m, "LocalExternal", py::module_local()); + + // test_bind_protected_functions + class ProtectedA { + protected: + int foo() const { return value; } + + private: + int value = 42; + }; + + class PublicistA : public ProtectedA { + public: + using ProtectedA::foo; + }; + + py::class_<ProtectedA>(m, "ProtectedA") + .def(py::init<>()) +#if !defined(_MSC_VER) || _MSC_VER >= 1910 + .def("foo", &PublicistA::foo); +#else + .def("foo", static_cast<int (ProtectedA::*)() const>(&PublicistA::foo)); +#endif + + class ProtectedB { + public: + virtual ~ProtectedB() = default; + + protected: + virtual int foo() const { return value; } + + private: + int value = 42; + }; + + class TrampolineB : public ProtectedB { + public: + int foo() const override { PYBIND11_OVERLOAD(int, ProtectedB, foo, ); } + }; + + class PublicistB : public ProtectedB { + public: + using ProtectedB::foo; + }; + + py::class_<ProtectedB, TrampolineB>(m, "ProtectedB") + .def(py::init<>()) +#if !defined(_MSC_VER) || _MSC_VER >= 1910 + .def("foo", &PublicistB::foo); +#else + .def("foo", static_cast<int (ProtectedB::*)() const>(&PublicistB::foo)); +#endif + + // test_brace_initialization + struct BraceInitialization { + int field1; + std::string field2; + }; + + py::class_<BraceInitialization>(m, "BraceInitialization") + .def(py::init<int, const std::string &>()) + .def_readwrite("field1", &BraceInitialization::field1) + .def_readwrite("field2", &BraceInitialization::field2); + + // test_reentrant_implicit_conversion_failure + // #1035: issue with runaway reentrant implicit conversion + struct BogusImplicitConversion { + BogusImplicitConversion(const BogusImplicitConversion &) { } + }; + + py::class_<BogusImplicitConversion>(m, "BogusImplicitConversion") + .def(py::init<const BogusImplicitConversion &>()); + + py::implicitly_convertible<int, BogusImplicitConversion>(); +} + +template <int N> class BreaksBase { public: virtual ~BreaksBase() = default; }; +template <int N> class BreaksTramp : public BreaksBase<N> {}; +// These should all compile just fine: +typedef py::class_<BreaksBase<1>, std::unique_ptr<BreaksBase<1>>, BreaksTramp<1>> DoesntBreak1; +typedef py::class_<BreaksBase<2>, BreaksTramp<2>, std::unique_ptr<BreaksBase<2>>> DoesntBreak2; +typedef py::class_<BreaksBase<3>, std::unique_ptr<BreaksBase<3>>> DoesntBreak3; +typedef py::class_<BreaksBase<4>, BreaksTramp<4>> DoesntBreak4; +typedef py::class_<BreaksBase<5>> DoesntBreak5; +typedef py::class_<BreaksBase<6>, std::shared_ptr<BreaksBase<6>>, BreaksTramp<6>> DoesntBreak6; +typedef py::class_<BreaksBase<7>, BreaksTramp<7>, std::shared_ptr<BreaksBase<7>>> DoesntBreak7; +typedef py::class_<BreaksBase<8>, std::shared_ptr<BreaksBase<8>>> DoesntBreak8; +#define CHECK_BASE(N) static_assert(std::is_same<typename DoesntBreak##N::type, BreaksBase<N>>::value, \ + "DoesntBreak" #N " has wrong type!") +CHECK_BASE(1); CHECK_BASE(2); CHECK_BASE(3); CHECK_BASE(4); CHECK_BASE(5); CHECK_BASE(6); CHECK_BASE(7); CHECK_BASE(8); +#define CHECK_ALIAS(N) static_assert(DoesntBreak##N::has_alias && std::is_same<typename DoesntBreak##N::type_alias, BreaksTramp<N>>::value, \ + "DoesntBreak" #N " has wrong type_alias!") +#define CHECK_NOALIAS(N) static_assert(!DoesntBreak##N::has_alias && std::is_void<typename DoesntBreak##N::type_alias>::value, \ + "DoesntBreak" #N " has type alias, but shouldn't!") +CHECK_ALIAS(1); CHECK_ALIAS(2); CHECK_NOALIAS(3); CHECK_ALIAS(4); CHECK_NOALIAS(5); CHECK_ALIAS(6); CHECK_ALIAS(7); CHECK_NOALIAS(8); +#define CHECK_HOLDER(N, TYPE) static_assert(std::is_same<typename DoesntBreak##N::holder_type, std::TYPE##_ptr<BreaksBase<N>>>::value, \ + "DoesntBreak" #N " has wrong holder_type!") +CHECK_HOLDER(1, unique); CHECK_HOLDER(2, unique); CHECK_HOLDER(3, unique); CHECK_HOLDER(4, unique); CHECK_HOLDER(5, unique); +CHECK_HOLDER(6, shared); CHECK_HOLDER(7, shared); CHECK_HOLDER(8, shared); + +// There's no nice way to test that these fail because they fail to compile; leave them here, +// though, so that they can be manually tested by uncommenting them (and seeing that compilation +// failures occurs). + +// We have to actually look into the type: the typedef alone isn't enough to instantiate the type: +#define CHECK_BROKEN(N) static_assert(std::is_same<typename Breaks##N::type, BreaksBase<-N>>::value, \ + "Breaks1 has wrong type!"); + +//// Two holder classes: +//typedef py::class_<BreaksBase<-1>, std::unique_ptr<BreaksBase<-1>>, std::unique_ptr<BreaksBase<-1>>> Breaks1; +//CHECK_BROKEN(1); +//// Two aliases: +//typedef py::class_<BreaksBase<-2>, BreaksTramp<-2>, BreaksTramp<-2>> Breaks2; +//CHECK_BROKEN(2); +//// Holder + 2 aliases +//typedef py::class_<BreaksBase<-3>, std::unique_ptr<BreaksBase<-3>>, BreaksTramp<-3>, BreaksTramp<-3>> Breaks3; +//CHECK_BROKEN(3); +//// Alias + 2 holders +//typedef py::class_<BreaksBase<-4>, std::unique_ptr<BreaksBase<-4>>, BreaksTramp<-4>, std::shared_ptr<BreaksBase<-4>>> Breaks4; +//CHECK_BROKEN(4); +//// Invalid option (not a subclass or holder) +//typedef py::class_<BreaksBase<-5>, BreaksTramp<-4>> Breaks5; +//CHECK_BROKEN(5); +//// Invalid option: multiple inheritance not supported: +//template <> struct BreaksBase<-8> : BreaksBase<-6>, BreaksBase<-7> {}; +//typedef py::class_<BreaksBase<-8>, BreaksBase<-6>, BreaksBase<-7>> Breaks8; +//CHECK_BROKEN(8); diff --git a/ext/pybind11/tests/test_class.py b/ext/pybind11/tests/test_class.py new file mode 100644 index 000000000..412d6798e --- /dev/null +++ b/ext/pybind11/tests/test_class.py @@ -0,0 +1,235 @@ +import pytest + +from pybind11_tests import class_ as m +from pybind11_tests import UserType, ConstructorStats + + +def test_repr(): + # In Python 3.3+, repr() accesses __qualname__ + assert "pybind11_type" in repr(type(UserType)) + assert "UserType" in repr(UserType) + + +def test_instance(msg): + with pytest.raises(TypeError) as excinfo: + m.NoConstructor() + assert msg(excinfo.value) == "m.class_.NoConstructor: No constructor defined!" + + instance = m.NoConstructor.new_instance() + + cstats = ConstructorStats.get(m.NoConstructor) + assert cstats.alive() == 1 + del instance + assert cstats.alive() == 0 + + +def test_docstrings(doc): + assert doc(UserType) == "A `py::class_` type for testing" + assert UserType.__name__ == "UserType" + assert UserType.__module__ == "pybind11_tests" + assert UserType.get_value.__name__ == "get_value" + assert UserType.get_value.__module__ == "pybind11_tests" + + assert doc(UserType.get_value) == """ + get_value(self: m.UserType) -> int + + Get value using a method + """ + assert doc(UserType.value) == "Get/set value using a property" + + assert doc(m.NoConstructor.new_instance) == """ + new_instance() -> m.class_.NoConstructor + + Return an instance + """ + + +def test_inheritance(msg): + roger = m.Rabbit('Rabbit') + assert roger.name() + " is a " + roger.species() == "Rabbit is a parrot" + assert m.pet_name_species(roger) == "Rabbit is a parrot" + + polly = m.Pet('Polly', 'parrot') + assert polly.name() + " is a " + polly.species() == "Polly is a parrot" + assert m.pet_name_species(polly) == "Polly is a parrot" + + molly = m.Dog('Molly') + assert molly.name() + " is a " + molly.species() == "Molly is a dog" + assert m.pet_name_species(molly) == "Molly is a dog" + + fred = m.Hamster('Fred') + assert fred.name() + " is a " + fred.species() == "Fred is a rodent" + + assert m.dog_bark(molly) == "Woof!" + + with pytest.raises(TypeError) as excinfo: + m.dog_bark(polly) + assert msg(excinfo.value) == """ + dog_bark(): incompatible function arguments. The following argument types are supported: + 1. (arg0: m.class_.Dog) -> str + + Invoked with: <m.class_.Pet object at 0> + """ + + with pytest.raises(TypeError) as excinfo: + m.Chimera("lion", "goat") + assert "No constructor defined!" in str(excinfo.value) + + +def test_automatic_upcasting(): + assert type(m.return_class_1()).__name__ == "DerivedClass1" + assert type(m.return_class_2()).__name__ == "DerivedClass2" + assert type(m.return_none()).__name__ == "NoneType" + # Repeat these a few times in a random order to ensure no invalid caching is applied + assert type(m.return_class_n(1)).__name__ == "DerivedClass1" + assert type(m.return_class_n(2)).__name__ == "DerivedClass2" + assert type(m.return_class_n(0)).__name__ == "BaseClass" + assert type(m.return_class_n(2)).__name__ == "DerivedClass2" + assert type(m.return_class_n(2)).__name__ == "DerivedClass2" + assert type(m.return_class_n(0)).__name__ == "BaseClass" + assert type(m.return_class_n(1)).__name__ == "DerivedClass1" + + +def test_isinstance(): + objects = [tuple(), dict(), m.Pet("Polly", "parrot")] + [m.Dog("Molly")] * 4 + expected = (True, True, True, True, True, False, False) + assert m.check_instances(objects) == expected + + +def test_mismatched_holder(): + import re + + with pytest.raises(RuntimeError) as excinfo: + m.mismatched_holder_1() + assert re.match('generic_type: type ".*MismatchDerived1" does not have a non-default ' + 'holder type while its base ".*MismatchBase1" does', str(excinfo.value)) + + with pytest.raises(RuntimeError) as excinfo: + m.mismatched_holder_2() + assert re.match('generic_type: type ".*MismatchDerived2" has a non-default holder type ' + 'while its base ".*MismatchBase2" does not', str(excinfo.value)) + + +def test_override_static(): + """#511: problem with inheritance + overwritten def_static""" + b = m.MyBase.make() + d1 = m.MyDerived.make2() + d2 = m.MyDerived.make() + + assert isinstance(b, m.MyBase) + assert isinstance(d1, m.MyDerived) + assert isinstance(d2, m.MyDerived) + + +def test_implicit_conversion_life_support(): + """Ensure the lifetime of temporary objects created for implicit conversions""" + assert m.implicitly_convert_argument(UserType(5)) == 5 + assert m.implicitly_convert_variable(UserType(5)) == 5 + + assert "outside a bound function" in m.implicitly_convert_variable_fail(UserType(5)) + + +def test_operator_new_delete(capture): + """Tests that class-specific operator new/delete functions are invoked""" + + class SubAliased(m.AliasedHasOpNewDelSize): + pass + + with capture: + a = m.HasOpNewDel() + b = m.HasOpNewDelSize() + d = m.HasOpNewDelBoth() + assert capture == """ + A new 8 + B new 4 + D new 32 + """ + sz_alias = str(m.AliasedHasOpNewDelSize.size_alias) + sz_noalias = str(m.AliasedHasOpNewDelSize.size_noalias) + with capture: + c = m.AliasedHasOpNewDelSize() + c2 = SubAliased() + assert capture == ( + "C new " + sz_noalias + "\n" + + "C new " + sz_alias + "\n" + ) + + with capture: + del a + pytest.gc_collect() + del b + pytest.gc_collect() + del d + pytest.gc_collect() + assert capture == """ + A delete + B delete 4 + D delete + """ + + with capture: + del c + pytest.gc_collect() + del c2 + pytest.gc_collect() + assert capture == ( + "C delete " + sz_noalias + "\n" + + "C delete " + sz_alias + "\n" + ) + + +def test_bind_protected_functions(): + """Expose protected member functions to Python using a helper class""" + a = m.ProtectedA() + assert a.foo() == 42 + + b = m.ProtectedB() + assert b.foo() == 42 + + class C(m.ProtectedB): + def __init__(self): + m.ProtectedB.__init__(self) + + def foo(self): + return 0 + + c = C() + assert c.foo() == 0 + + +def test_brace_initialization(): + """ Tests that simple POD classes can be constructed using C++11 brace initialization """ + a = m.BraceInitialization(123, "test") + assert a.field1 == 123 + assert a.field2 == "test" + + +@pytest.unsupported_on_pypy +def test_class_refcount(): + """Instances must correctly increase/decrease the reference count of their types (#1029)""" + from sys import getrefcount + + class PyDog(m.Dog): + pass + + for cls in m.Dog, PyDog: + refcount_1 = getrefcount(cls) + molly = [cls("Molly") for _ in range(10)] + refcount_2 = getrefcount(cls) + + del molly + pytest.gc_collect() + refcount_3 = getrefcount(cls) + + assert refcount_1 == refcount_3 + assert refcount_2 > refcount_1 + + +def test_reentrant_implicit_conversion_failure(msg): + # ensure that there is no runaway reentrant implicit conversion (#1035) + with pytest.raises(TypeError) as excinfo: + m.BogusImplicitConversion(0) + assert msg(excinfo.value) == '''__init__(): incompatible constructor arguments. The following argument types are supported: + 1. m.class_.BogusImplicitConversion(arg0: m.class_.BogusImplicitConversion) + +Invoked with: 0''' diff --git a/ext/pybind11/tests/test_class_args.cpp b/ext/pybind11/tests/test_class_args.cpp deleted file mode 100644 index e18b39db2..000000000 --- a/ext/pybind11/tests/test_class_args.cpp +++ /dev/null @@ -1,68 +0,0 @@ -/* - tests/test_class_args.cpp -- tests that various way of defining a class work - - Copyright (c) 2016 Wenzel Jakob <wenzel.jakob@epfl.ch> - - All rights reserved. Use of this source code is governed by a - BSD-style license that can be found in the LICENSE file. -*/ - -#include "pybind11_tests.h" - - -template <int N> class BreaksBase {}; -template <int N> class BreaksTramp : public BreaksBase<N> {}; -// These should all compile just fine: -typedef py::class_<BreaksBase<1>, std::unique_ptr<BreaksBase<1>>, BreaksTramp<1>> DoesntBreak1; -typedef py::class_<BreaksBase<2>, BreaksTramp<2>, std::unique_ptr<BreaksBase<2>>> DoesntBreak2; -typedef py::class_<BreaksBase<3>, std::unique_ptr<BreaksBase<3>>> DoesntBreak3; -typedef py::class_<BreaksBase<4>, BreaksTramp<4>> DoesntBreak4; -typedef py::class_<BreaksBase<5>> DoesntBreak5; -typedef py::class_<BreaksBase<6>, std::shared_ptr<BreaksBase<6>>, BreaksTramp<6>> DoesntBreak6; -typedef py::class_<BreaksBase<7>, BreaksTramp<7>, std::shared_ptr<BreaksBase<7>>> DoesntBreak7; -typedef py::class_<BreaksBase<8>, std::shared_ptr<BreaksBase<8>>> DoesntBreak8; -#define CHECK_BASE(N) static_assert(std::is_same<typename DoesntBreak##N::type, BreaksBase<N>>::value, \ - "DoesntBreak" #N " has wrong type!") -CHECK_BASE(1); CHECK_BASE(2); CHECK_BASE(3); CHECK_BASE(4); CHECK_BASE(5); CHECK_BASE(6); CHECK_BASE(7); CHECK_BASE(8); -#define CHECK_ALIAS(N) static_assert(DoesntBreak##N::has_alias && std::is_same<typename DoesntBreak##N::type_alias, BreaksTramp<N>>::value, \ - "DoesntBreak" #N " has wrong type_alias!") -#define CHECK_NOALIAS(N) static_assert(!DoesntBreak##N::has_alias && std::is_void<typename DoesntBreak##N::type_alias>::value, \ - "DoesntBreak" #N " has type alias, but shouldn't!") -CHECK_ALIAS(1); CHECK_ALIAS(2); CHECK_NOALIAS(3); CHECK_ALIAS(4); CHECK_NOALIAS(5); CHECK_ALIAS(6); CHECK_ALIAS(7); CHECK_NOALIAS(8); -#define CHECK_HOLDER(N, TYPE) static_assert(std::is_same<typename DoesntBreak##N::holder_type, std::TYPE##_ptr<BreaksBase<N>>>::value, \ - "DoesntBreak" #N " has wrong holder_type!") -CHECK_HOLDER(1, unique); CHECK_HOLDER(2, unique); CHECK_HOLDER(3, unique); CHECK_HOLDER(4, unique); CHECK_HOLDER(5, unique); -CHECK_HOLDER(6, shared); CHECK_HOLDER(7, shared); CHECK_HOLDER(8, shared); - -// There's no nice way to test that these fail because they fail to compile; leave them here, -// though, so that they can be manually tested by uncommenting them (and seeing that compilation -// failures occurs). - -// We have to actually look into the type: the typedef alone isn't enough to instantiate the type: -#define CHECK_BROKEN(N) static_assert(std::is_same<typename Breaks##N::type, BreaksBase<-N>>::value, \ - "Breaks1 has wrong type!"); - -//// Two holder classes: -//typedef py::class_<BreaksBase<-1>, std::unique_ptr<BreaksBase<-1>>, std::unique_ptr<BreaksBase<-1>>> Breaks1; -//CHECK_BROKEN(1); -//// Two aliases: -//typedef py::class_<BreaksBase<-2>, BreaksTramp<-2>, BreaksTramp<-2>> Breaks2; -//CHECK_BROKEN(2); -//// Holder + 2 aliases -//typedef py::class_<BreaksBase<-3>, std::unique_ptr<BreaksBase<-3>>, BreaksTramp<-3>, BreaksTramp<-3>> Breaks3; -//CHECK_BROKEN(3); -//// Alias + 2 holders -//typedef py::class_<BreaksBase<-4>, std::unique_ptr<BreaksBase<-4>>, BreaksTramp<-4>, std::shared_ptr<BreaksBase<-4>>> Breaks4; -//CHECK_BROKEN(4); -//// Invalid option (not a subclass or holder) -//typedef py::class_<BreaksBase<-5>, BreaksTramp<-4>> Breaks5; -//CHECK_BROKEN(5); -//// Invalid option: multiple inheritance not supported: -//template <> struct BreaksBase<-8> : BreaksBase<-6>, BreaksBase<-7> {}; -//typedef py::class_<BreaksBase<-8>, BreaksBase<-6>, BreaksBase<-7>> Breaks8; -//CHECK_BROKEN(8); - -test_initializer class_args([](py::module &m) { - // Just test that this compiled okay - m.def("class_args_noop", []() {}); -}); diff --git a/ext/pybind11/tests/test_class_args.py b/ext/pybind11/tests/test_class_args.py deleted file mode 100644 index 40cbcec9f..000000000 --- a/ext/pybind11/tests/test_class_args.py +++ /dev/null @@ -1,8 +0,0 @@ - - -def test_class_args(): - """There's basically nothing to test here; just make sure the code compiled - and declared its definition - """ - from pybind11_tests import class_args_noop - class_args_noop() diff --git a/ext/pybind11/tests/test_cmake_build/CMakeLists.txt b/ext/pybind11/tests/test_cmake_build/CMakeLists.txt new file mode 100644 index 000000000..c9b5fcb2e --- /dev/null +++ b/ext/pybind11/tests/test_cmake_build/CMakeLists.txt @@ -0,0 +1,58 @@ +add_custom_target(test_cmake_build) + +if(CMAKE_VERSION VERSION_LESS 3.1) + # 3.0 needed for interface library for subdirectory_target/installed_target + # 3.1 needed for cmake -E env for testing + return() +endif() + +include(CMakeParseArguments) +function(pybind11_add_build_test name) + cmake_parse_arguments(ARG "INSTALL" "" "" ${ARGN}) + + set(build_options "-DCMAKE_PREFIX_PATH=${PROJECT_BINARY_DIR}/mock_install" + "-DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER}" + "-DPYTHON_EXECUTABLE:FILEPATH=${PYTHON_EXECUTABLE}" + "-DPYBIND11_CPP_STANDARD=${PYBIND11_CPP_STANDARD}") + if(NOT ARG_INSTALL) + list(APPEND build_options "-DPYBIND11_PROJECT_DIR=${PROJECT_SOURCE_DIR}") + endif() + + add_custom_target(test_${name} ${CMAKE_CTEST_COMMAND} + --quiet --output-log ${name}.log + --build-and-test "${CMAKE_CURRENT_SOURCE_DIR}/${name}" + "${CMAKE_CURRENT_BINARY_DIR}/${name}" + --build-config Release + --build-noclean + --build-generator ${CMAKE_GENERATOR} + $<$<BOOL:${CMAKE_GENERATOR_PLATFORM}>:--build-generator-platform> ${CMAKE_GENERATOR_PLATFORM} + --build-makeprogram ${CMAKE_MAKE_PROGRAM} + --build-target check + --build-options ${build_options} + ) + if(ARG_INSTALL) + add_dependencies(test_${name} mock_install) + endif() + add_dependencies(test_cmake_build test_${name}) +endfunction() + +pybind11_add_build_test(subdirectory_function) +pybind11_add_build_test(subdirectory_target) +if(NOT ${PYTHON_MODULE_EXTENSION} MATCHES "pypy") + pybind11_add_build_test(subdirectory_embed) +endif() + +if(PYBIND11_INSTALL) + add_custom_target(mock_install ${CMAKE_COMMAND} + "-DCMAKE_INSTALL_PREFIX=${PROJECT_BINARY_DIR}/mock_install" + -P "${PROJECT_BINARY_DIR}/cmake_install.cmake" + ) + + pybind11_add_build_test(installed_function INSTALL) + pybind11_add_build_test(installed_target INSTALL) + if(NOT ${PYTHON_MODULE_EXTENSION} MATCHES "pypy") + pybind11_add_build_test(installed_embed INSTALL) + endif() +endif() + +add_dependencies(check test_cmake_build) diff --git a/ext/pybind11/tests/test_cmake_build/embed.cpp b/ext/pybind11/tests/test_cmake_build/embed.cpp new file mode 100644 index 000000000..b9581d2fd --- /dev/null +++ b/ext/pybind11/tests/test_cmake_build/embed.cpp @@ -0,0 +1,21 @@ +#include <pybind11/embed.h> +namespace py = pybind11; + +PYBIND11_EMBEDDED_MODULE(test_cmake_build, m) { + m.def("add", [](int i, int j) { return i + j; }); +} + +int main(int argc, char *argv[]) { + if (argc != 2) + throw std::runtime_error("Expected test.py file as the first argument"); + auto test_py_file = argv[1]; + + py::scoped_interpreter guard{}; + + auto m = py::module::import("test_cmake_build"); + if (m.attr("add")(1, 2).cast<int>() != 3) + throw std::runtime_error("embed.cpp failed"); + + py::module::import("sys").attr("argv") = py::make_tuple("test.py", "embed.cpp"); + py::eval_file(test_py_file, py::globals()); +} diff --git a/ext/pybind11/tests/test_cmake_build/installed_embed/CMakeLists.txt b/ext/pybind11/tests/test_cmake_build/installed_embed/CMakeLists.txt new file mode 100644 index 000000000..f7fc09c21 --- /dev/null +++ b/ext/pybind11/tests/test_cmake_build/installed_embed/CMakeLists.txt @@ -0,0 +1,15 @@ +cmake_minimum_required(VERSION 3.0) +project(test_installed_embed CXX) + +set(CMAKE_MODULE_PATH "") +find_package(pybind11 CONFIG REQUIRED) +message(STATUS "Found pybind11 v${pybind11_VERSION}: ${pybind11_INCLUDE_DIRS}") + +add_executable(test_cmake_build ../embed.cpp) +target_link_libraries(test_cmake_build PRIVATE pybind11::embed) + +# Do not treat includes from IMPORTED target as SYSTEM (Python headers in pybind11::embed). +# This may be needed to resolve header conflicts, e.g. between Python release and debug headers. +set_target_properties(test_cmake_build PROPERTIES NO_SYSTEM_FROM_IMPORTED ON) + +add_custom_target(check $<TARGET_FILE:test_cmake_build> ${PROJECT_SOURCE_DIR}/../test.py) diff --git a/ext/pybind11/tests/test_cmake_build/main.cpp b/ext/pybind11/tests/test_cmake_build/main.cpp index e0f5b69c9..e30f2c4b9 100644 --- a/ext/pybind11/tests/test_cmake_build/main.cpp +++ b/ext/pybind11/tests/test_cmake_build/main.cpp @@ -1,10 +1,6 @@ #include <pybind11/pybind11.h> namespace py = pybind11; -PYBIND11_PLUGIN(test_cmake_build) { - py::module m("test_cmake_build"); - +PYBIND11_MODULE(test_cmake_build, m) { m.def("add", [](int i, int j) { return i + j; }); - - return m.ptr(); } diff --git a/ext/pybind11/tests/test_cmake_build/subdirectory_embed/CMakeLists.txt b/ext/pybind11/tests/test_cmake_build/subdirectory_embed/CMakeLists.txt new file mode 100644 index 000000000..88ba60dd5 --- /dev/null +++ b/ext/pybind11/tests/test_cmake_build/subdirectory_embed/CMakeLists.txt @@ -0,0 +1,25 @@ +cmake_minimum_required(VERSION 3.0) +project(test_subdirectory_embed CXX) + +set(PYBIND11_INSTALL ON CACHE BOOL "") +set(PYBIND11_EXPORT_NAME test_export) + +add_subdirectory(${PYBIND11_PROJECT_DIR} pybind11) + +# Test basic target functionality +add_executable(test_cmake_build ../embed.cpp) +target_link_libraries(test_cmake_build PRIVATE pybind11::embed) + +add_custom_target(check $<TARGET_FILE:test_cmake_build> ${PROJECT_SOURCE_DIR}/../test.py) + +# Test custom export group -- PYBIND11_EXPORT_NAME +add_library(test_embed_lib ../embed.cpp) +target_link_libraries(test_embed_lib PRIVATE pybind11::embed) + +install(TARGETS test_embed_lib + EXPORT test_export + ARCHIVE DESTINATION bin + LIBRARY DESTINATION lib + RUNTIME DESTINATION lib) +install(EXPORT test_export + DESTINATION lib/cmake/test_export/test_export-Targets.cmake) diff --git a/ext/pybind11/tests/test_constants_and_functions.cpp b/ext/pybind11/tests/test_constants_and_functions.cpp index 653bdf6b6..8c9ef7f67 100644 --- a/ext/pybind11/tests/test_constants_and_functions.cpp +++ b/ext/pybind11/tests/test_constants_and_functions.cpp @@ -23,6 +23,8 @@ std::string test_function3(int i) { return "test_function(" + std::to_string(i) + ")"; } +py::str test_function4() { return "test_function()"; } +py::str test_function4(char *) { return "test_function(char *)"; } py::str test_function4(int, float) { return "test_function(int, float)"; } py::str test_function4(float, int) { return "test_function(float, int)"; } @@ -61,17 +63,23 @@ struct C { } -test_initializer constants_and_functions([](py::module &m) { +TEST_SUBMODULE(constants_and_functions, m) { + // test_constants m.attr("some_constant") = py::int_(14); + // test_function_overloading m.def("test_function", &test_function1); m.def("test_function", &test_function2); m.def("test_function", &test_function3); #if defined(PYBIND11_OVERLOAD_CAST) + m.def("test_function", py::overload_cast<>(&test_function4)); + m.def("test_function", py::overload_cast<char *>(&test_function4)); m.def("test_function", py::overload_cast<int, float>(&test_function4)); m.def("test_function", py::overload_cast<float, int>(&test_function4)); #else + m.def("test_function", static_cast<py::str (*)()>(&test_function4)); + m.def("test_function", static_cast<py::str (*)(char *)>(&test_function4)); m.def("test_function", static_cast<py::str (*)(int, float)>(&test_function4)); m.def("test_function", static_cast<py::str (*)(float, int)>(&test_function4)); #endif @@ -81,12 +89,13 @@ test_initializer constants_and_functions([](py::module &m) { .value("ESecondEntry", ESecondEntry) .export_values(); + // test_bytes m.def("return_bytes", &return_bytes); m.def("print_bytes", &print_bytes); + // test_exception_specifiers using namespace test_exc_sp; - py::module m2 = m.def_submodule("exc_sp"); - py::class_<C>(m2, "C") + py::class_<C>(m, "C") .def(py::init<>()) .def("m1", &C::m1) .def("m2", &C::m2) @@ -97,8 +106,8 @@ test_initializer constants_and_functions([](py::module &m) { .def("m7", &C::m7) .def("m8", &C::m8) ; - m2.def("f1", f1); - m2.def("f2", f2); - m2.def("f3", f3); - m2.def("f4", f4); -}); + m.def("f1", f1); + m.def("f2", f2); + m.def("f3", f3); + m.def("f4", f4); +} diff --git a/ext/pybind11/tests/test_constants_and_functions.py b/ext/pybind11/tests/test_constants_and_functions.py index 2a570d2e5..472682d61 100644 --- a/ext/pybind11/tests/test_constants_and_functions.py +++ b/ext/pybind11/tests/test_constants_and_functions.py @@ -1,33 +1,29 @@ +from pybind11_tests import constants_and_functions as m def test_constants(): - from pybind11_tests import some_constant - - assert some_constant == 14 + assert m.some_constant == 14 def test_function_overloading(): - from pybind11_tests import MyEnum, test_function - - assert test_function() == "test_function()" - assert test_function(7) == "test_function(7)" - assert test_function(MyEnum.EFirstEntry) == "test_function(enum=1)" - assert test_function(MyEnum.ESecondEntry) == "test_function(enum=2)" + assert m.test_function() == "test_function()" + assert m.test_function(7) == "test_function(7)" + assert m.test_function(m.MyEnum.EFirstEntry) == "test_function(enum=1)" + assert m.test_function(m.MyEnum.ESecondEntry) == "test_function(enum=2)" - assert test_function(1, 1.0) == "test_function(int, float)" - assert test_function(2.0, 2) == "test_function(float, int)" + assert m.test_function() == "test_function()" + assert m.test_function("abcd") == "test_function(char *)" + assert m.test_function(1, 1.0) == "test_function(int, float)" + assert m.test_function(1, 1.0) == "test_function(int, float)" + assert m.test_function(2.0, 2) == "test_function(float, int)" def test_bytes(): - from pybind11_tests import return_bytes, print_bytes - - assert print_bytes(return_bytes()) == "bytes[1 0 2 0]" + assert m.print_bytes(m.return_bytes()) == "bytes[1 0 2 0]" def test_exception_specifiers(): - from pybind11_tests.exc_sp import C, f1, f2, f3, f4 - - c = C() + c = m.C() assert c.m1(2) == 1 assert c.m2(3) == 1 assert c.m3(5) == 2 @@ -37,7 +33,7 @@ def test_exception_specifiers(): assert c.m7(20) == 13 assert c.m8(29) == 21 - assert f1(33) == 34 - assert f2(53) == 55 - assert f3(86) == 89 - assert f4(140) == 144 + assert m.f1(33) == 34 + assert m.f2(53) == 55 + assert m.f3(86) == 89 + assert m.f4(140) == 144 diff --git a/ext/pybind11/tests/test_copy_move.cpp b/ext/pybind11/tests/test_copy_move.cpp new file mode 100644 index 000000000..94113e3af --- /dev/null +++ b/ext/pybind11/tests/test_copy_move.cpp @@ -0,0 +1,213 @@ +/* + tests/test_copy_move_policies.cpp -- 'copy' and 'move' return value policies + and related tests + + Copyright (c) 2016 Ben North <ben@redfrontdoor.org> + + All rights reserved. Use of this source code is governed by a + BSD-style license that can be found in the LICENSE file. +*/ + +#include "pybind11_tests.h" +#include "constructor_stats.h" +#include <pybind11/stl.h> + +template <typename derived> +struct empty { + static const derived& get_one() { return instance_; } + static derived instance_; +}; + +struct lacking_copy_ctor : public empty<lacking_copy_ctor> { + lacking_copy_ctor() {} + lacking_copy_ctor(const lacking_copy_ctor& other) = delete; +}; + +template <> lacking_copy_ctor empty<lacking_copy_ctor>::instance_ = {}; + +struct lacking_move_ctor : public empty<lacking_move_ctor> { + lacking_move_ctor() {} + lacking_move_ctor(const lacking_move_ctor& other) = delete; + lacking_move_ctor(lacking_move_ctor&& other) = delete; +}; + +template <> lacking_move_ctor empty<lacking_move_ctor>::instance_ = {}; + +/* Custom type caster move/copy test classes */ +class MoveOnlyInt { +public: + MoveOnlyInt() { print_default_created(this); } + MoveOnlyInt(int v) : value{std::move(v)} { print_created(this, value); } + MoveOnlyInt(MoveOnlyInt &&m) { print_move_created(this, m.value); std::swap(value, m.value); } + MoveOnlyInt &operator=(MoveOnlyInt &&m) { print_move_assigned(this, m.value); std::swap(value, m.value); return *this; } + MoveOnlyInt(const MoveOnlyInt &) = delete; + MoveOnlyInt &operator=(const MoveOnlyInt &) = delete; + ~MoveOnlyInt() { print_destroyed(this); } + + int value; +}; +class MoveOrCopyInt { +public: + MoveOrCopyInt() { print_default_created(this); } + MoveOrCopyInt(int v) : value{std::move(v)} { print_created(this, value); } + MoveOrCopyInt(MoveOrCopyInt &&m) { print_move_created(this, m.value); std::swap(value, m.value); } + MoveOrCopyInt &operator=(MoveOrCopyInt &&m) { print_move_assigned(this, m.value); std::swap(value, m.value); return *this; } + MoveOrCopyInt(const MoveOrCopyInt &c) { print_copy_created(this, c.value); value = c.value; } + MoveOrCopyInt &operator=(const MoveOrCopyInt &c) { print_copy_assigned(this, c.value); value = c.value; return *this; } + ~MoveOrCopyInt() { print_destroyed(this); } + + int value; +}; +class CopyOnlyInt { +public: + CopyOnlyInt() { print_default_created(this); } + CopyOnlyInt(int v) : value{std::move(v)} { print_created(this, value); } + CopyOnlyInt(const CopyOnlyInt &c) { print_copy_created(this, c.value); value = c.value; } + CopyOnlyInt &operator=(const CopyOnlyInt &c) { print_copy_assigned(this, c.value); value = c.value; return *this; } + ~CopyOnlyInt() { print_destroyed(this); } + + int value; +}; +NAMESPACE_BEGIN(pybind11) +NAMESPACE_BEGIN(detail) +template <> struct type_caster<MoveOnlyInt> { + PYBIND11_TYPE_CASTER(MoveOnlyInt, _("MoveOnlyInt")); + bool load(handle src, bool) { value = MoveOnlyInt(src.cast<int>()); return true; } + static handle cast(const MoveOnlyInt &m, return_value_policy r, handle p) { return pybind11::cast(m.value, r, p); } +}; + +template <> struct type_caster<MoveOrCopyInt> { + PYBIND11_TYPE_CASTER(MoveOrCopyInt, _("MoveOrCopyInt")); + bool load(handle src, bool) { value = MoveOrCopyInt(src.cast<int>()); return true; } + static handle cast(const MoveOrCopyInt &m, return_value_policy r, handle p) { return pybind11::cast(m.value, r, p); } +}; + +template <> struct type_caster<CopyOnlyInt> { +protected: + CopyOnlyInt value; +public: + static PYBIND11_DESCR name() { return _("CopyOnlyInt"); } + bool load(handle src, bool) { value = CopyOnlyInt(src.cast<int>()); return true; } + static handle cast(const CopyOnlyInt &m, return_value_policy r, handle p) { return pybind11::cast(m.value, r, p); } + static handle cast(const CopyOnlyInt *src, return_value_policy policy, handle parent) { + if (!src) return none().release(); + return cast(*src, policy, parent); + } + operator CopyOnlyInt*() { return &value; } + operator CopyOnlyInt&() { return value; } + template <typename T> using cast_op_type = pybind11::detail::cast_op_type<T>; +}; +NAMESPACE_END(detail) +NAMESPACE_END(pybind11) + +TEST_SUBMODULE(copy_move_policies, m) { + // test_lacking_copy_ctor + py::class_<lacking_copy_ctor>(m, "lacking_copy_ctor") + .def_static("get_one", &lacking_copy_ctor::get_one, + py::return_value_policy::copy); + // test_lacking_move_ctor + py::class_<lacking_move_ctor>(m, "lacking_move_ctor") + .def_static("get_one", &lacking_move_ctor::get_one, + py::return_value_policy::move); + + // test_move_and_copy_casts + m.def("move_and_copy_casts", [](py::object o) { + int r = 0; + r += py::cast<MoveOrCopyInt>(o).value; /* moves */ + r += py::cast<MoveOnlyInt>(o).value; /* moves */ + r += py::cast<CopyOnlyInt>(o).value; /* copies */ + MoveOrCopyInt m1(py::cast<MoveOrCopyInt>(o)); /* moves */ + MoveOnlyInt m2(py::cast<MoveOnlyInt>(o)); /* moves */ + CopyOnlyInt m3(py::cast<CopyOnlyInt>(o)); /* copies */ + r += m1.value + m2.value + m3.value; + + return r; + }); + + // test_move_and_copy_loads + m.def("move_only", [](MoveOnlyInt m) { return m.value; }); + m.def("move_or_copy", [](MoveOrCopyInt m) { return m.value; }); + m.def("copy_only", [](CopyOnlyInt m) { return m.value; }); + m.def("move_pair", [](std::pair<MoveOnlyInt, MoveOrCopyInt> p) { + return p.first.value + p.second.value; + }); + m.def("move_tuple", [](std::tuple<MoveOnlyInt, MoveOrCopyInt, MoveOnlyInt> t) { + return std::get<0>(t).value + std::get<1>(t).value + std::get<2>(t).value; + }); + m.def("copy_tuple", [](std::tuple<CopyOnlyInt, CopyOnlyInt> t) { + return std::get<0>(t).value + std::get<1>(t).value; + }); + m.def("move_copy_nested", [](std::pair<MoveOnlyInt, std::pair<std::tuple<MoveOrCopyInt, CopyOnlyInt, std::tuple<MoveOnlyInt>>, MoveOrCopyInt>> x) { + return x.first.value + std::get<0>(x.second.first).value + std::get<1>(x.second.first).value + + std::get<0>(std::get<2>(x.second.first)).value + x.second.second.value; + }); + m.def("move_and_copy_cstats", []() { + ConstructorStats::gc(); + // Reset counts to 0 so that previous tests don't affect later ones: + auto &mc = ConstructorStats::get<MoveOrCopyInt>(); + mc.move_assignments = mc.move_constructions = mc.copy_assignments = mc.copy_constructions = 0; + auto &mo = ConstructorStats::get<MoveOnlyInt>(); + mo.move_assignments = mo.move_constructions = mo.copy_assignments = mo.copy_constructions = 0; + auto &co = ConstructorStats::get<CopyOnlyInt>(); + co.move_assignments = co.move_constructions = co.copy_assignments = co.copy_constructions = 0; + py::dict d; + d["MoveOrCopyInt"] = py::cast(mc, py::return_value_policy::reference); + d["MoveOnlyInt"] = py::cast(mo, py::return_value_policy::reference); + d["CopyOnlyInt"] = py::cast(co, py::return_value_policy::reference); + return d; + }); +#ifdef PYBIND11_HAS_OPTIONAL + // test_move_and_copy_load_optional + m.attr("has_optional") = true; + m.def("move_optional", [](std::optional<MoveOnlyInt> o) { + return o->value; + }); + m.def("move_or_copy_optional", [](std::optional<MoveOrCopyInt> o) { + return o->value; + }); + m.def("copy_optional", [](std::optional<CopyOnlyInt> o) { + return o->value; + }); + m.def("move_optional_tuple", [](std::optional<std::tuple<MoveOrCopyInt, MoveOnlyInt, CopyOnlyInt>> x) { + return std::get<0>(*x).value + std::get<1>(*x).value + std::get<2>(*x).value; + }); +#else + m.attr("has_optional") = false; +#endif + + // #70 compilation issue if operator new is not public + struct PrivateOpNew { + int value = 1; + private: +#if defined(_MSC_VER) +# pragma warning(disable: 4822) // warning C4822: local class member function does not have a body +#endif + void *operator new(size_t bytes); + }; + py::class_<PrivateOpNew>(m, "PrivateOpNew").def_readonly("value", &PrivateOpNew::value); + m.def("private_op_new_value", []() { return PrivateOpNew(); }); + m.def("private_op_new_reference", []() -> const PrivateOpNew & { + static PrivateOpNew x{}; + return x; + }, py::return_value_policy::reference); + + // test_move_fallback + // #389: rvp::move should fall-through to copy on non-movable objects + struct MoveIssue1 { + int v; + MoveIssue1(int v) : v{v} {} + MoveIssue1(const MoveIssue1 &c) = default; + MoveIssue1(MoveIssue1 &&) = delete; + }; + py::class_<MoveIssue1>(m, "MoveIssue1").def(py::init<int>()).def_readwrite("value", &MoveIssue1::v); + + struct MoveIssue2 { + int v; + MoveIssue2(int v) : v{v} {} + MoveIssue2(MoveIssue2 &&) = default; + }; + py::class_<MoveIssue2>(m, "MoveIssue2").def(py::init<int>()).def_readwrite("value", &MoveIssue2::v); + + m.def("get_moveissue1", [](int i) { return new MoveIssue1(i); }, py::return_value_policy::move); + m.def("get_moveissue2", [](int i) { return MoveIssue2(i); }, py::return_value_policy::move); +} diff --git a/ext/pybind11/tests/test_copy_move.py b/ext/pybind11/tests/test_copy_move.py new file mode 100644 index 000000000..aff2d99f2 --- /dev/null +++ b/ext/pybind11/tests/test_copy_move.py @@ -0,0 +1,112 @@ +import pytest +from pybind11_tests import copy_move_policies as m + + +def test_lacking_copy_ctor(): + with pytest.raises(RuntimeError) as excinfo: + m.lacking_copy_ctor.get_one() + assert "the object is non-copyable!" in str(excinfo.value) + + +def test_lacking_move_ctor(): + with pytest.raises(RuntimeError) as excinfo: + m.lacking_move_ctor.get_one() + assert "the object is neither movable nor copyable!" in str(excinfo.value) + + +def test_move_and_copy_casts(): + """Cast some values in C++ via custom type casters and count the number of moves/copies.""" + + cstats = m.move_and_copy_cstats() + c_m, c_mc, c_c = cstats["MoveOnlyInt"], cstats["MoveOrCopyInt"], cstats["CopyOnlyInt"] + + # The type move constructions/assignments below each get incremented: the move assignment comes + # from the type_caster load; the move construction happens when extracting that via a cast or + # loading into an argument. + assert m.move_and_copy_casts(3) == 18 + assert c_m.copy_assignments + c_m.copy_constructions == 0 + assert c_m.move_assignments == 2 + assert c_m.move_constructions >= 2 + assert c_mc.alive() == 0 + assert c_mc.copy_assignments + c_mc.copy_constructions == 0 + assert c_mc.move_assignments == 2 + assert c_mc.move_constructions >= 2 + assert c_c.alive() == 0 + assert c_c.copy_assignments == 2 + assert c_c.copy_constructions >= 2 + assert c_m.alive() + c_mc.alive() + c_c.alive() == 0 + + +def test_move_and_copy_loads(): + """Call some functions that load arguments via custom type casters and count the number of + moves/copies.""" + + cstats = m.move_and_copy_cstats() + c_m, c_mc, c_c = cstats["MoveOnlyInt"], cstats["MoveOrCopyInt"], cstats["CopyOnlyInt"] + + assert m.move_only(10) == 10 # 1 move, c_m + assert m.move_or_copy(11) == 11 # 1 move, c_mc + assert m.copy_only(12) == 12 # 1 copy, c_c + assert m.move_pair((13, 14)) == 27 # 1 c_m move, 1 c_mc move + assert m.move_tuple((15, 16, 17)) == 48 # 2 c_m moves, 1 c_mc move + assert m.copy_tuple((18, 19)) == 37 # 2 c_c copies + # Direct constructions: 2 c_m moves, 2 c_mc moves, 1 c_c copy + # Extra moves/copies when moving pairs/tuples: 3 c_m, 3 c_mc, 2 c_c + assert m.move_copy_nested((1, ((2, 3, (4,)), 5))) == 15 + + assert c_m.copy_assignments + c_m.copy_constructions == 0 + assert c_m.move_assignments == 6 + assert c_m.move_constructions == 9 + assert c_mc.copy_assignments + c_mc.copy_constructions == 0 + assert c_mc.move_assignments == 5 + assert c_mc.move_constructions == 8 + assert c_c.copy_assignments == 4 + assert c_c.copy_constructions == 6 + assert c_m.alive() + c_mc.alive() + c_c.alive() == 0 + + +@pytest.mark.skipif(not m.has_optional, reason='no <optional>') +def test_move_and_copy_load_optional(): + """Tests move/copy loads of std::optional arguments""" + + cstats = m.move_and_copy_cstats() + c_m, c_mc, c_c = cstats["MoveOnlyInt"], cstats["MoveOrCopyInt"], cstats["CopyOnlyInt"] + + # The extra move/copy constructions below come from the std::optional move (which has to move + # its arguments): + assert m.move_optional(10) == 10 # c_m: 1 move assign, 2 move construct + assert m.move_or_copy_optional(11) == 11 # c_mc: 1 move assign, 2 move construct + assert m.copy_optional(12) == 12 # c_c: 1 copy assign, 2 copy construct + # 1 move assign + move construct moves each of c_m, c_mc, 1 c_c copy + # +1 move/copy construct each from moving the tuple + # +1 move/copy construct each from moving the optional (which moves the tuple again) + assert m.move_optional_tuple((3, 4, 5)) == 12 + + assert c_m.copy_assignments + c_m.copy_constructions == 0 + assert c_m.move_assignments == 2 + assert c_m.move_constructions == 5 + assert c_mc.copy_assignments + c_mc.copy_constructions == 0 + assert c_mc.move_assignments == 2 + assert c_mc.move_constructions == 5 + assert c_c.copy_assignments == 2 + assert c_c.copy_constructions == 5 + assert c_m.alive() + c_mc.alive() + c_c.alive() == 0 + + +def test_private_op_new(): + """An object with a private `operator new` cannot be returned by value""" + + with pytest.raises(RuntimeError) as excinfo: + m.private_op_new_value() + assert "the object is neither movable nor copyable" in str(excinfo.value) + + assert m.private_op_new_reference().value == 1 + + +def test_move_fallback(): + """#389: rvp::move should fall-through to copy on non-movable objects""" + + m2 = m.get_moveissue2(2) + assert m2.value == 2 + m1 = m.get_moveissue1(1) + assert m1.value == 1 diff --git a/ext/pybind11/tests/test_copy_move_policies.cpp b/ext/pybind11/tests/test_copy_move_policies.cpp deleted file mode 100644 index 6f7907c1f..000000000 --- a/ext/pybind11/tests/test_copy_move_policies.cpp +++ /dev/null @@ -1,41 +0,0 @@ -/* - tests/test_copy_move_policies.cpp -- 'copy' and 'move' - return value policies - - Copyright (c) 2016 Ben North <ben@redfrontdoor.org> - - All rights reserved. Use of this source code is governed by a - BSD-style license that can be found in the LICENSE file. -*/ - -#include "pybind11_tests.h" - -template <typename derived> -struct empty { - static const derived& get_one() { return instance_; } - static derived instance_; -}; - -struct lacking_copy_ctor : public empty<lacking_copy_ctor> { - lacking_copy_ctor() {} - lacking_copy_ctor(const lacking_copy_ctor& other) = delete; -}; - -template <> lacking_copy_ctor empty<lacking_copy_ctor>::instance_ = {}; - -struct lacking_move_ctor : public empty<lacking_move_ctor> { - lacking_move_ctor() {} - lacking_move_ctor(const lacking_move_ctor& other) = delete; - lacking_move_ctor(lacking_move_ctor&& other) = delete; -}; - -template <> lacking_move_ctor empty<lacking_move_ctor>::instance_ = {}; - -test_initializer copy_move_policies([](py::module &m) { - py::class_<lacking_copy_ctor>(m, "lacking_copy_ctor") - .def_static("get_one", &lacking_copy_ctor::get_one, - py::return_value_policy::copy); - py::class_<lacking_move_ctor>(m, "lacking_move_ctor") - .def_static("get_one", &lacking_move_ctor::get_one, - py::return_value_policy::move); -}); diff --git a/ext/pybind11/tests/test_copy_move_policies.py b/ext/pybind11/tests/test_copy_move_policies.py deleted file mode 100644 index edcf38075..000000000 --- a/ext/pybind11/tests/test_copy_move_policies.py +++ /dev/null @@ -1,15 +0,0 @@ -import pytest - - -def test_lacking_copy_ctor(): - from pybind11_tests import lacking_copy_ctor - with pytest.raises(RuntimeError) as excinfo: - lacking_copy_ctor.get_one() - assert "the object is non-copyable!" in str(excinfo.value) - - -def test_lacking_move_ctor(): - from pybind11_tests import lacking_move_ctor - with pytest.raises(RuntimeError) as excinfo: - lacking_move_ctor.get_one() - assert "the object is neither movable nor copyable!" in str(excinfo.value) diff --git a/ext/pybind11/tests/test_docstring_options.cpp b/ext/pybind11/tests/test_docstring_options.cpp index 9a9297cc3..8c8f79fd5 100644 --- a/ext/pybind11/tests/test_docstring_options.cpp +++ b/ext/pybind11/tests/test_docstring_options.cpp @@ -9,14 +9,8 @@ #include "pybind11_tests.h" -struct DocstringTestFoo { - int value; - void setValue(int v) { value = v; } - int getValue() const { return value; } -}; - -test_initializer docstring_generation([](py::module &m) { - +TEST_SUBMODULE(docstring_options, m) { + // test_docstring_options { py::options options; options.disable_function_signatures(); @@ -55,8 +49,13 @@ test_initializer docstring_generation([](py::module &m) { py::options options; options.disable_user_defined_docstrings(); + struct DocstringTestFoo { + int value; + void setValue(int v) { value = v; } + int getValue() const { return value; } + }; py::class_<DocstringTestFoo>(m, "DocstringTestFoo", "This is a class docstring") .def_property("value_prop", &DocstringTestFoo::getValue, &DocstringTestFoo::setValue, "This is a property docstring") ; } -}); +} diff --git a/ext/pybind11/tests/test_docstring_options.py b/ext/pybind11/tests/test_docstring_options.py index 5e40f6868..0dbca609e 100644 --- a/ext/pybind11/tests/test_docstring_options.py +++ b/ext/pybind11/tests/test_docstring_options.py @@ -1,42 +1,38 @@ +from pybind11_tests import docstring_options as m def test_docstring_options(): - from pybind11_tests import (test_function1, test_function2, test_function3, - test_function4, test_function5, test_function6, - test_function7, DocstringTestFoo, - test_overloaded1, test_overloaded2, test_overloaded3) - # options.disable_function_signatures() - assert not test_function1.__doc__ + assert not m.test_function1.__doc__ - assert test_function2.__doc__ == "A custom docstring" + assert m.test_function2.__doc__ == "A custom docstring" # docstring specified on just the first overload definition: - assert test_overloaded1.__doc__ == "Overload docstring" + assert m.test_overloaded1.__doc__ == "Overload docstring" # docstring on both overloads: - assert test_overloaded2.__doc__ == "overload docstring 1\noverload docstring 2" + assert m.test_overloaded2.__doc__ == "overload docstring 1\noverload docstring 2" # docstring on only second overload: - assert test_overloaded3.__doc__ == "Overload docstr" + assert m.test_overloaded3.__doc__ == "Overload docstr" # options.enable_function_signatures() - assert test_function3.__doc__ .startswith("test_function3(a: int, b: int) -> None") + assert m.test_function3.__doc__ .startswith("test_function3(a: int, b: int) -> None") - assert test_function4.__doc__ .startswith("test_function4(a: int, b: int) -> None") - assert test_function4.__doc__ .endswith("A custom docstring\n") + assert m.test_function4.__doc__ .startswith("test_function4(a: int, b: int) -> None") + assert m.test_function4.__doc__ .endswith("A custom docstring\n") # options.disable_function_signatures() # options.disable_user_defined_docstrings() - assert not test_function5.__doc__ + assert not m.test_function5.__doc__ # nested options.enable_user_defined_docstrings() - assert test_function6.__doc__ == "A custom docstring" + assert m.test_function6.__doc__ == "A custom docstring" # RAII destructor - assert test_function7.__doc__ .startswith("test_function7(a: int, b: int) -> None") - assert test_function7.__doc__ .endswith("A custom docstring\n") + assert m.test_function7.__doc__ .startswith("test_function7(a: int, b: int) -> None") + assert m.test_function7.__doc__ .endswith("A custom docstring\n") # Suppression of user-defined docstrings for non-function objects - assert not DocstringTestFoo.__doc__ - assert not DocstringTestFoo.value_prop.__doc__ + assert not m.DocstringTestFoo.__doc__ + assert not m.DocstringTestFoo.value_prop.__doc__ diff --git a/ext/pybind11/tests/test_eigen.cpp b/ext/pybind11/tests/test_eigen.cpp index f2ec8fd2e..17b156ce4 100644 --- a/ext/pybind11/tests/test_eigen.cpp +++ b/ext/pybind11/tests/test_eigen.cpp @@ -10,6 +10,7 @@ #include "pybind11_tests.h" #include "constructor_stats.h" #include <pybind11/eigen.h> +#include <pybind11/stl.h> #include <Eigen/Cholesky> using MatrixXdR = Eigen::Matrix<double, Eigen::Dynamic, Eigen::Dynamic, Eigen::RowMajor>; @@ -69,20 +70,21 @@ struct CustomOperatorNew { EIGEN_MAKE_ALIGNED_OPERATOR_NEW; }; -test_initializer eigen([](py::module &m) { - typedef Eigen::Matrix<float, 5, 6, Eigen::RowMajor> FixedMatrixR; - typedef Eigen::Matrix<float, 5, 6> FixedMatrixC; - typedef Eigen::Matrix<float, Eigen::Dynamic, Eigen::Dynamic, Eigen::RowMajor> DenseMatrixR; - typedef Eigen::Matrix<float, Eigen::Dynamic, Eigen::Dynamic> DenseMatrixC; - typedef Eigen::Matrix<float, 4, Eigen::Dynamic> FourRowMatrixC; - typedef Eigen::Matrix<float, Eigen::Dynamic, 4> FourColMatrixC; - typedef Eigen::Matrix<float, 4, Eigen::Dynamic> FourRowMatrixR; - typedef Eigen::Matrix<float, Eigen::Dynamic, 4> FourColMatrixR; - typedef Eigen::SparseMatrix<float, Eigen::RowMajor> SparseMatrixR; - typedef Eigen::SparseMatrix<float> SparseMatrixC; +TEST_SUBMODULE(eigen, m) { + using FixedMatrixR = Eigen::Matrix<float, 5, 6, Eigen::RowMajor>; + using FixedMatrixC = Eigen::Matrix<float, 5, 6>; + using DenseMatrixR = Eigen::Matrix<float, Eigen::Dynamic, Eigen::Dynamic, Eigen::RowMajor>; + using DenseMatrixC = Eigen::Matrix<float, Eigen::Dynamic, Eigen::Dynamic>; + using FourRowMatrixC = Eigen::Matrix<float, 4, Eigen::Dynamic>; + using FourColMatrixC = Eigen::Matrix<float, Eigen::Dynamic, 4>; + using FourRowMatrixR = Eigen::Matrix<float, 4, Eigen::Dynamic>; + using FourColMatrixR = Eigen::Matrix<float, Eigen::Dynamic, 4>; + using SparseMatrixR = Eigen::SparseMatrix<float, Eigen::RowMajor>; + using SparseMatrixC = Eigen::SparseMatrix<float>; m.attr("have_eigen") = true; + // various tests m.def("double_col", [](const Eigen::VectorXf &x) -> Eigen::VectorXf { return 2.0f * x; }); m.def("double_row", [](const Eigen::RowVectorXf &x) -> Eigen::RowVectorXf { return 2.0f * x; }); m.def("double_complex", [](const Eigen::VectorXcf &x) -> Eigen::VectorXcf { return 2.0f * x; }); @@ -91,12 +93,14 @@ test_initializer eigen([](py::module &m) { m.def("double_mat_cm", [](Eigen::MatrixXf x) -> Eigen::MatrixXf { return 2.0f * x; }); m.def("double_mat_rm", [](DenseMatrixR x) -> DenseMatrixR { return 2.0f * x; }); + // test_eigen_ref_to_python // Different ways of passing via Eigen::Ref; the first and second are the Eigen-recommended m.def("cholesky1", [](Eigen::Ref<MatrixXdR> x) -> Eigen::MatrixXd { return x.llt().matrixL(); }); m.def("cholesky2", [](const Eigen::Ref<const MatrixXdR> &x) -> Eigen::MatrixXd { return x.llt().matrixL(); }); m.def("cholesky3", [](const Eigen::Ref<MatrixXdR> &x) -> Eigen::MatrixXd { return x.llt().matrixL(); }); m.def("cholesky4", [](Eigen::Ref<const MatrixXdR> x) -> Eigen::MatrixXd { return x.llt().matrixL(); }); + // test_eigen_ref_mutators // Mutators: these add some value to the given element using Eigen, but Eigen should be mapping into // the numpy array data and so the result should show up there. There are three versions: one that // works on a contiguous-row matrix (numpy's default), one for a contiguous-column matrix, and one @@ -121,19 +125,6 @@ test_initializer eigen([](py::module &m) { // The same references, but non-mutable (numpy maps into eigen variables, but is !writeable) m.def("get_cm_const_ref", []() { return Eigen::Ref<const Eigen::MatrixXd>(get_cm()); }); m.def("get_rm_const_ref", []() { return Eigen::Ref<const MatrixXdR>(get_rm()); }); - // Just the corners (via a Map instead of a Ref): - m.def("get_cm_corners", []() { - auto &x = get_cm(); - return py::EigenDMap<Eigen::Matrix2d>( - x.data(), - py::EigenDStride(x.outerStride() * (x.rows() - 1), x.innerStride() * (x.cols() - 1))); - }); - m.def("get_cm_corners_const", []() { - const auto &x = get_cm(); - return py::EigenDMap<const Eigen::Matrix2d>( - x.data(), - py::EigenDStride(x.outerStride() * (x.rows() - 1), x.innerStride() * (x.cols() - 1))); - }); m.def("reset_refs", reset_refs); // Restores get_{cm,rm}_ref to original values @@ -173,6 +164,7 @@ test_initializer eigen([](py::module &m) { return x.block(start_row, start_col, block_rows, block_cols); }); + // test_eigen_return_references, test_eigen_keepalive // return value referencing/copying tests: class ReturnTester { Eigen::MatrixXd mat = create(); @@ -219,6 +211,7 @@ test_initializer eigen([](py::module &m) { .def("corners_const", &ReturnTester::cornersConst, rvp::reference_internal) ; + // test_special_matrix_objects // Returns a DiagonalMatrix with diagonal (1,2,3,...) m.def("incr_diag", [](int k) { Eigen::DiagonalMatrix<int, Eigen::Dynamic> m(k); @@ -243,27 +236,33 @@ test_initializer eigen([](py::module &m) { 0, 0, 0, 0, 0, 11, 0, 0, 14, 0, 8, 11; + // test_fixed, and various other tests m.def("fixed_r", [mat]() -> FixedMatrixR { return FixedMatrixR(mat); }); m.def("fixed_r_const", [mat]() -> const FixedMatrixR { return FixedMatrixR(mat); }); m.def("fixed_c", [mat]() -> FixedMatrixC { return FixedMatrixC(mat); }); m.def("fixed_copy_r", [](const FixedMatrixR &m) -> FixedMatrixR { return m; }); m.def("fixed_copy_c", [](const FixedMatrixC &m) -> FixedMatrixC { return m; }); + // test_mutator_descriptors m.def("fixed_mutator_r", [](Eigen::Ref<FixedMatrixR>) {}); m.def("fixed_mutator_c", [](Eigen::Ref<FixedMatrixC>) {}); m.def("fixed_mutator_a", [](py::EigenDRef<FixedMatrixC>) {}); + // test_dense m.def("dense_r", [mat]() -> DenseMatrixR { return DenseMatrixR(mat); }); m.def("dense_c", [mat]() -> DenseMatrixC { return DenseMatrixC(mat); }); m.def("dense_copy_r", [](const DenseMatrixR &m) -> DenseMatrixR { return m; }); m.def("dense_copy_c", [](const DenseMatrixC &m) -> DenseMatrixC { return m; }); + // test_sparse, test_sparse_signature m.def("sparse_r", [mat]() -> SparseMatrixR { return Eigen::SparseView<Eigen::MatrixXf>(mat); }); m.def("sparse_c", [mat]() -> SparseMatrixC { return Eigen::SparseView<Eigen::MatrixXf>(mat); }); m.def("sparse_copy_r", [](const SparseMatrixR &m) -> SparseMatrixR { return m; }); m.def("sparse_copy_c", [](const SparseMatrixC &m) -> SparseMatrixC { return m; }); + // test_partially_fixed m.def("partial_copy_four_rm_r", [](const FourRowMatrixR &m) -> FourRowMatrixR { return m; }); m.def("partial_copy_four_rm_c", [](const FourColMatrixR &m) -> FourColMatrixR { return m; }); m.def("partial_copy_four_cm_r", [](const FourRowMatrixC &m) -> FourRowMatrixC { return m; }); m.def("partial_copy_four_cm_c", [](const FourColMatrixC &m) -> FourColMatrixC { return m; }); + // test_cpp_casting // Test that we can cast a numpy object to a Eigen::MatrixXd explicitly m.def("cpp_copy", [](py::handle m) { return m.cast<Eigen::MatrixXd>()(1, 0); }); m.def("cpp_ref_c", [](py::handle m) { return m.cast<Eigen::Ref<Eigen::MatrixXd>>()(1, 0); }); @@ -271,6 +270,7 @@ test_initializer eigen([](py::module &m) { m.def("cpp_ref_any", [](py::handle m) { return m.cast<py::EigenDRef<Eigen::MatrixXd>>()(1, 0); }); + // test_nocopy_wrapper // Test that we can prevent copying into an argument that would normally copy: First a version // that would allow copying (if types or strides don't match) for comparison: m.def("get_elem", &get_elem); @@ -281,14 +281,37 @@ test_initializer eigen([](py::module &m) { m.def("get_elem_rm_nocopy", [](Eigen::Ref<const Eigen::Matrix<long, -1, -1, Eigen::RowMajor>> &m) -> long { return m(2, 1); }, py::arg().noconvert()); + // test_issue738 // Issue #738: 1xN or Nx1 2D matrices were neither accepted nor properly copied with an // incompatible stride value on the length-1 dimension--but that should be allowed (without // requiring a copy!) because the stride value can be safely ignored on a size-1 dimension. m.def("iss738_f1", &adjust_matrix<const Eigen::Ref<const Eigen::MatrixXd> &>, py::arg().noconvert()); m.def("iss738_f2", &adjust_matrix<const Eigen::Ref<const Eigen::Matrix<double, -1, -1, Eigen::RowMajor>> &>, py::arg().noconvert()); + // test_named_arguments + // Make sure named arguments are working properly: + m.def("matrix_multiply", [](const py::EigenDRef<const Eigen::MatrixXd> A, const py::EigenDRef<const Eigen::MatrixXd> B) + -> Eigen::MatrixXd { + if (A.cols() != B.rows()) throw std::domain_error("Nonconformable matrices!"); + return A * B; + }, py::arg("A"), py::arg("B")); + + // test_custom_operator_new py::class_<CustomOperatorNew>(m, "CustomOperatorNew") .def(py::init<>()) .def_readonly("a", &CustomOperatorNew::a) .def_readonly("b", &CustomOperatorNew::b); -}); + + // test_eigen_ref_life_support + // In case of a failure (the caster's temp array does not live long enough), creating + // a new array (np.ones(10)) increases the chances that the temp array will be garbage + // collected and/or that its memory will be overridden with different values. + m.def("get_elem_direct", [](Eigen::Ref<const Eigen::VectorXd> v) { + py::module::import("numpy").attr("ones")(10); + return v(5); + }); + m.def("get_elem_indirect", [](std::vector<Eigen::Ref<const Eigen::VectorXd>> v) { + py::module::import("numpy").attr("ones")(10); + return v[0](5); + }); +} diff --git a/ext/pybind11/tests/test_eigen.py b/ext/pybind11/tests/test_eigen.py index df08edf3d..4ac8cbf5d 100644 --- a/ext/pybind11/tests/test_eigen.py +++ b/ext/pybind11/tests/test_eigen.py @@ -1,8 +1,10 @@ import pytest +from pybind11_tests import ConstructorStats pytestmark = pytest.requires_eigen_and_numpy with pytest.suppress(ImportError): + from pybind11_tests import eigen as m import numpy as np ref = np.array([[ 0., 3, 0, 0, 0, 11], @@ -21,156 +23,190 @@ def assert_sparse_equal_ref(sparse_mat): def test_fixed(): - from pybind11_tests import fixed_r, fixed_c, fixed_copy_r, fixed_copy_c - - assert_equal_ref(fixed_c()) - assert_equal_ref(fixed_r()) - assert_equal_ref(fixed_copy_r(fixed_r())) - assert_equal_ref(fixed_copy_c(fixed_c())) - assert_equal_ref(fixed_copy_r(fixed_c())) - assert_equal_ref(fixed_copy_c(fixed_r())) + assert_equal_ref(m.fixed_c()) + assert_equal_ref(m.fixed_r()) + assert_equal_ref(m.fixed_copy_r(m.fixed_r())) + assert_equal_ref(m.fixed_copy_c(m.fixed_c())) + assert_equal_ref(m.fixed_copy_r(m.fixed_c())) + assert_equal_ref(m.fixed_copy_c(m.fixed_r())) def test_dense(): - from pybind11_tests import dense_r, dense_c, dense_copy_r, dense_copy_c - - assert_equal_ref(dense_r()) - assert_equal_ref(dense_c()) - assert_equal_ref(dense_copy_r(dense_r())) - assert_equal_ref(dense_copy_c(dense_c())) - assert_equal_ref(dense_copy_r(dense_c())) - assert_equal_ref(dense_copy_c(dense_r())) + assert_equal_ref(m.dense_r()) + assert_equal_ref(m.dense_c()) + assert_equal_ref(m.dense_copy_r(m.dense_r())) + assert_equal_ref(m.dense_copy_c(m.dense_c())) + assert_equal_ref(m.dense_copy_r(m.dense_c())) + assert_equal_ref(m.dense_copy_c(m.dense_r())) def test_partially_fixed(): - from pybind11_tests import (partial_copy_four_rm_r, partial_copy_four_rm_c, - partial_copy_four_cm_r, partial_copy_four_cm_c) - ref2 = np.array([[0., 1, 2, 3], [4, 5, 6, 7], [8, 9, 10, 11], [12, 13, 14, 15]]) - np.testing.assert_array_equal(partial_copy_four_rm_r(ref2), ref2) - np.testing.assert_array_equal(partial_copy_four_rm_c(ref2), ref2) - np.testing.assert_array_equal(partial_copy_four_rm_r(ref2[:, 1]), ref2[:, [1]]) - np.testing.assert_array_equal(partial_copy_four_rm_c(ref2[0, :]), ref2[[0], :]) - np.testing.assert_array_equal(partial_copy_four_rm_r(ref2[:, (0, 2)]), ref2[:, (0, 2)]) + np.testing.assert_array_equal(m.partial_copy_four_rm_r(ref2), ref2) + np.testing.assert_array_equal(m.partial_copy_four_rm_c(ref2), ref2) + np.testing.assert_array_equal(m.partial_copy_four_rm_r(ref2[:, 1]), ref2[:, [1]]) + np.testing.assert_array_equal(m.partial_copy_four_rm_c(ref2[0, :]), ref2[[0], :]) + np.testing.assert_array_equal(m.partial_copy_four_rm_r(ref2[:, (0, 2)]), ref2[:, (0, 2)]) np.testing.assert_array_equal( - partial_copy_four_rm_c(ref2[(3, 1, 2), :]), ref2[(3, 1, 2), :]) + m.partial_copy_four_rm_c(ref2[(3, 1, 2), :]), ref2[(3, 1, 2), :]) - np.testing.assert_array_equal(partial_copy_four_cm_r(ref2), ref2) - np.testing.assert_array_equal(partial_copy_four_cm_c(ref2), ref2) - np.testing.assert_array_equal(partial_copy_four_cm_r(ref2[:, 1]), ref2[:, [1]]) - np.testing.assert_array_equal(partial_copy_four_cm_c(ref2[0, :]), ref2[[0], :]) - np.testing.assert_array_equal(partial_copy_four_cm_r(ref2[:, (0, 2)]), ref2[:, (0, 2)]) + np.testing.assert_array_equal(m.partial_copy_four_cm_r(ref2), ref2) + np.testing.assert_array_equal(m.partial_copy_four_cm_c(ref2), ref2) + np.testing.assert_array_equal(m.partial_copy_four_cm_r(ref2[:, 1]), ref2[:, [1]]) + np.testing.assert_array_equal(m.partial_copy_four_cm_c(ref2[0, :]), ref2[[0], :]) + np.testing.assert_array_equal(m.partial_copy_four_cm_r(ref2[:, (0, 2)]), ref2[:, (0, 2)]) np.testing.assert_array_equal( - partial_copy_four_cm_c(ref2[(3, 1, 2), :]), ref2[(3, 1, 2), :]) + m.partial_copy_four_cm_c(ref2[(3, 1, 2), :]), ref2[(3, 1, 2), :]) + + # TypeError should be raise for a shape mismatch + functions = [m.partial_copy_four_rm_r, m.partial_copy_four_rm_c, + m.partial_copy_four_cm_r, m.partial_copy_four_cm_c] + matrix_with_wrong_shape = [[1, 2], + [3, 4]] + for f in functions: + with pytest.raises(TypeError) as excinfo: + f(matrix_with_wrong_shape) + assert "incompatible function arguments" in str(excinfo.value) def test_mutator_descriptors(): - from pybind11_tests import fixed_mutator_r, fixed_mutator_c, fixed_mutator_a zr = np.arange(30, dtype='float32').reshape(5, 6) # row-major zc = zr.reshape(6, 5).transpose() # column-major - fixed_mutator_r(zr) - fixed_mutator_c(zc) - fixed_mutator_a(zr) - fixed_mutator_a(zc) + m.fixed_mutator_r(zr) + m.fixed_mutator_c(zc) + m.fixed_mutator_a(zr) + m.fixed_mutator_a(zc) with pytest.raises(TypeError) as excinfo: - fixed_mutator_r(zc) - assert ('(numpy.ndarray[float32[5, 6], flags.writeable, flags.c_contiguous]) -> arg0: None' + m.fixed_mutator_r(zc) + assert ('(arg0: numpy.ndarray[float32[5, 6], flags.writeable, flags.c_contiguous]) -> None' in str(excinfo.value)) with pytest.raises(TypeError) as excinfo: - fixed_mutator_c(zr) - assert ('(numpy.ndarray[float32[5, 6], flags.writeable, flags.f_contiguous]) -> arg0: None' + m.fixed_mutator_c(zr) + assert ('(arg0: numpy.ndarray[float32[5, 6], flags.writeable, flags.f_contiguous]) -> None' in str(excinfo.value)) with pytest.raises(TypeError) as excinfo: - fixed_mutator_a(np.array([[1, 2], [3, 4]], dtype='float32')) - assert ('(numpy.ndarray[float32[5, 6], flags.writeable]) -> arg0: None' + m.fixed_mutator_a(np.array([[1, 2], [3, 4]], dtype='float32')) + assert ('(arg0: numpy.ndarray[float32[5, 6], flags.writeable]) -> None' in str(excinfo.value)) zr.flags.writeable = False with pytest.raises(TypeError): - fixed_mutator_r(zr) + m.fixed_mutator_r(zr) with pytest.raises(TypeError): - fixed_mutator_a(zr) + m.fixed_mutator_a(zr) def test_cpp_casting(): - from pybind11_tests import (cpp_copy, cpp_ref_c, cpp_ref_r, cpp_ref_any, - fixed_r, fixed_c, get_cm_ref, get_rm_ref, ReturnTester) - assert cpp_copy(fixed_r()) == 22. - assert cpp_copy(fixed_c()) == 22. + assert m.cpp_copy(m.fixed_r()) == 22. + assert m.cpp_copy(m.fixed_c()) == 22. z = np.array([[5., 6], [7, 8]]) - assert cpp_copy(z) == 7. - assert cpp_copy(get_cm_ref()) == 21. - assert cpp_copy(get_rm_ref()) == 21. - assert cpp_ref_c(get_cm_ref()) == 21. - assert cpp_ref_r(get_rm_ref()) == 21. + assert m.cpp_copy(z) == 7. + assert m.cpp_copy(m.get_cm_ref()) == 21. + assert m.cpp_copy(m.get_rm_ref()) == 21. + assert m.cpp_ref_c(m.get_cm_ref()) == 21. + assert m.cpp_ref_r(m.get_rm_ref()) == 21. with pytest.raises(RuntimeError) as excinfo: - # Can't reference fixed_c: it contains floats, cpp_ref_any wants doubles - cpp_ref_any(fixed_c()) + # Can't reference m.fixed_c: it contains floats, m.cpp_ref_any wants doubles + m.cpp_ref_any(m.fixed_c()) assert 'Unable to cast Python instance' in str(excinfo.value) with pytest.raises(RuntimeError) as excinfo: - # Can't reference fixed_r: it contains floats, cpp_ref_any wants doubles - cpp_ref_any(fixed_r()) + # Can't reference m.fixed_r: it contains floats, m.cpp_ref_any wants doubles + m.cpp_ref_any(m.fixed_r()) assert 'Unable to cast Python instance' in str(excinfo.value) - assert cpp_ref_any(ReturnTester.create()) == 1. + assert m.cpp_ref_any(m.ReturnTester.create()) == 1. - assert cpp_ref_any(get_cm_ref()) == 21. - assert cpp_ref_any(get_cm_ref()) == 21. + assert m.cpp_ref_any(m.get_cm_ref()) == 21. + assert m.cpp_ref_any(m.get_cm_ref()) == 21. def test_pass_readonly_array(): - from pybind11_tests import fixed_copy_r, fixed_r, fixed_r_const z = np.full((5, 6), 42.0) z.flags.writeable = False - np.testing.assert_array_equal(z, fixed_copy_r(z)) - np.testing.assert_array_equal(fixed_r_const(), fixed_r()) - assert not fixed_r_const().flags.writeable - np.testing.assert_array_equal(fixed_copy_r(fixed_r_const()), fixed_r_const()) + np.testing.assert_array_equal(z, m.fixed_copy_r(z)) + np.testing.assert_array_equal(m.fixed_r_const(), m.fixed_r()) + assert not m.fixed_r_const().flags.writeable + np.testing.assert_array_equal(m.fixed_copy_r(m.fixed_r_const()), m.fixed_r_const()) def test_nonunit_stride_from_python(): - from pybind11_tests import ( - double_row, double_col, double_complex, double_mat_cm, double_mat_rm, - double_threec, double_threer) - counting_mat = np.arange(9.0, dtype=np.float32).reshape((3, 3)) second_row = counting_mat[1, :] second_col = counting_mat[:, 1] - np.testing.assert_array_equal(double_row(second_row), 2.0 * second_row) - np.testing.assert_array_equal(double_col(second_row), 2.0 * second_row) - np.testing.assert_array_equal(double_complex(second_row), 2.0 * second_row) - np.testing.assert_array_equal(double_row(second_col), 2.0 * second_col) - np.testing.assert_array_equal(double_col(second_col), 2.0 * second_col) - np.testing.assert_array_equal(double_complex(second_col), 2.0 * second_col) + np.testing.assert_array_equal(m.double_row(second_row), 2.0 * second_row) + np.testing.assert_array_equal(m.double_col(second_row), 2.0 * second_row) + np.testing.assert_array_equal(m.double_complex(second_row), 2.0 * second_row) + np.testing.assert_array_equal(m.double_row(second_col), 2.0 * second_col) + np.testing.assert_array_equal(m.double_col(second_col), 2.0 * second_col) + np.testing.assert_array_equal(m.double_complex(second_col), 2.0 * second_col) counting_3d = np.arange(27.0, dtype=np.float32).reshape((3, 3, 3)) slices = [counting_3d[0, :, :], counting_3d[:, 0, :], counting_3d[:, :, 0]] for slice_idx, ref_mat in enumerate(slices): - np.testing.assert_array_equal(double_mat_cm(ref_mat), 2.0 * ref_mat) - np.testing.assert_array_equal(double_mat_rm(ref_mat), 2.0 * ref_mat) + np.testing.assert_array_equal(m.double_mat_cm(ref_mat), 2.0 * ref_mat) + np.testing.assert_array_equal(m.double_mat_rm(ref_mat), 2.0 * ref_mat) # Mutator: - double_threer(second_row) - double_threec(second_col) + m.double_threer(second_row) + m.double_threec(second_col) np.testing.assert_array_equal(counting_mat, [[0., 2, 2], [6, 16, 10], [6, 14, 8]]) -def test_nonunit_stride_to_python(): - from pybind11_tests import diagonal, diagonal_1, diagonal_n, block +def test_negative_stride_from_python(msg): + """Eigen doesn't support (as of yet) negative strides. When a function takes an Eigen matrix by + copy or const reference, we can pass a numpy array that has negative strides. Otherwise, an + exception will be thrown as Eigen will not be able to map the numpy array.""" + + counting_mat = np.arange(9.0, dtype=np.float32).reshape((3, 3)) + counting_mat = counting_mat[::-1, ::-1] + second_row = counting_mat[1, :] + second_col = counting_mat[:, 1] + np.testing.assert_array_equal(m.double_row(second_row), 2.0 * second_row) + np.testing.assert_array_equal(m.double_col(second_row), 2.0 * second_row) + np.testing.assert_array_equal(m.double_complex(second_row), 2.0 * second_row) + np.testing.assert_array_equal(m.double_row(second_col), 2.0 * second_col) + np.testing.assert_array_equal(m.double_col(second_col), 2.0 * second_col) + np.testing.assert_array_equal(m.double_complex(second_col), 2.0 * second_col) + + counting_3d = np.arange(27.0, dtype=np.float32).reshape((3, 3, 3)) + counting_3d = counting_3d[::-1, ::-1, ::-1] + slices = [counting_3d[0, :, :], counting_3d[:, 0, :], counting_3d[:, :, 0]] + for slice_idx, ref_mat in enumerate(slices): + np.testing.assert_array_equal(m.double_mat_cm(ref_mat), 2.0 * ref_mat) + np.testing.assert_array_equal(m.double_mat_rm(ref_mat), 2.0 * ref_mat) + + # Mutator: + with pytest.raises(TypeError) as excinfo: + m.double_threer(second_row) + assert msg(excinfo.value) == """ + double_threer(): incompatible function arguments. The following argument types are supported: + 1. (arg0: numpy.ndarray[float32[1, 3], flags.writeable]) -> None + + Invoked with: array([ 5., 4., 3.], dtype=float32) + """ # noqa: E501 line too long + + with pytest.raises(TypeError) as excinfo: + m.double_threec(second_col) + assert msg(excinfo.value) == """ + double_threec(): incompatible function arguments. The following argument types are supported: + 1. (arg0: numpy.ndarray[float32[3, 1], flags.writeable]) -> None + + Invoked with: array([ 7., 4., 1.], dtype=float32) + """ # noqa: E501 line too long + - assert np.all(diagonal(ref) == ref.diagonal()) - assert np.all(diagonal_1(ref) == ref.diagonal(1)) +def test_nonunit_stride_to_python(): + assert np.all(m.diagonal(ref) == ref.diagonal()) + assert np.all(m.diagonal_1(ref) == ref.diagonal(1)) for i in range(-5, 7): - assert np.all(diagonal_n(ref, i) == ref.diagonal(i)), "diagonal_n({})".format(i) + assert np.all(m.diagonal_n(ref, i) == ref.diagonal(i)), "m.diagonal_n({})".format(i) - assert np.all(block(ref, 2, 1, 3, 3) == ref[2:5, 1:4]) - assert np.all(block(ref, 1, 4, 4, 2) == ref[1:, 4:]) - assert np.all(block(ref, 1, 4, 3, 2) == ref[1:4, 4:]) + assert np.all(m.block(ref, 2, 1, 3, 3) == ref[2:5, 1:4]) + assert np.all(m.block(ref, 1, 4, 4, 2) == ref[1:, 4:]) + assert np.all(m.block(ref, 1, 4, 3, 2) == ref[1:4, 4:]) def test_eigen_ref_to_python(): - from pybind11_tests import cholesky1, cholesky2, cholesky3, cholesky4 - - chols = [cholesky1, cholesky2, cholesky3, cholesky4] + chols = [m.cholesky1, m.cholesky2, m.cholesky3, m.cholesky4] for i, chol in enumerate(chols, start=1): mymat = chol(np.array([[1., 2, 4], [2, 13, 23], [4, 23, 77]])) assert np.all(mymat == np.array([[1, 0, 0], [2, 3, 0], [4, 5, 6]])), "cholesky{}".format(i) @@ -189,9 +225,9 @@ def array_copy_but_one(a, r, c, v): def test_eigen_return_references(): """Tests various ways of returning references and non-referencing copies""" - from pybind11_tests import ReturnTester + master = np.ones((10, 10)) - a = ReturnTester() + a = m.ReturnTester() a_get1 = a.get() assert not a_get1.flags.owndata and a_get1.flags.writeable assign_both(a_get1, master, 3, 3, 5) @@ -301,7 +337,6 @@ def test_eigen_return_references(): def assert_keeps_alive(cl, method, *args): - from pybind11_tests import ConstructorStats cstats = ConstructorStats.get(cl) start_with = cstats.alive() a = cl() @@ -317,10 +352,8 @@ def assert_keeps_alive(cl, method, *args): def test_eigen_keepalive(): - from pybind11_tests import ReturnTester, ConstructorStats - a = ReturnTester() - - cstats = ConstructorStats.get(ReturnTester) + a = m.ReturnTester() + cstats = ConstructorStats.get(m.ReturnTester) assert cstats.alive() == 1 unsafe = [a.ref(), a.ref_const(), a.block(1, 2, 3, 4)] copies = [a.copy_get(), a.copy_view(), a.copy_ref(), a.copy_ref_const(), @@ -330,43 +363,43 @@ def test_eigen_keepalive(): del unsafe del copies - for meth in [ReturnTester.get, ReturnTester.get_ptr, ReturnTester.view, - ReturnTester.view_ptr, ReturnTester.ref_safe, ReturnTester.ref_const_safe, - ReturnTester.corners, ReturnTester.corners_const]: - assert_keeps_alive(ReturnTester, meth) + for meth in [m.ReturnTester.get, m.ReturnTester.get_ptr, m.ReturnTester.view, + m.ReturnTester.view_ptr, m.ReturnTester.ref_safe, m.ReturnTester.ref_const_safe, + m.ReturnTester.corners, m.ReturnTester.corners_const]: + assert_keeps_alive(m.ReturnTester, meth) - for meth in [ReturnTester.block_safe, ReturnTester.block_const]: - assert_keeps_alive(ReturnTester, meth, 4, 3, 2, 1) + for meth in [m.ReturnTester.block_safe, m.ReturnTester.block_const]: + assert_keeps_alive(m.ReturnTester, meth, 4, 3, 2, 1) def test_eigen_ref_mutators(): - """Tests whether Eigen can mutate numpy values""" - from pybind11_tests import add_rm, add_cm, add_any, add1, add2 + """Tests Eigen's ability to mutate numpy values""" + orig = np.array([[1., 2, 3], [4, 5, 6], [7, 8, 9]]) zr = np.array(orig) zc = np.array(orig, order='F') - add_rm(zr, 1, 0, 100) + m.add_rm(zr, 1, 0, 100) assert np.all(zr == np.array([[1., 2, 3], [104, 5, 6], [7, 8, 9]])) - add_cm(zc, 1, 0, 200) + m.add_cm(zc, 1, 0, 200) assert np.all(zc == np.array([[1., 2, 3], [204, 5, 6], [7, 8, 9]])) - add_any(zr, 1, 0, 20) + m.add_any(zr, 1, 0, 20) assert np.all(zr == np.array([[1., 2, 3], [124, 5, 6], [7, 8, 9]])) - add_any(zc, 1, 0, 10) + m.add_any(zc, 1, 0, 10) assert np.all(zc == np.array([[1., 2, 3], [214, 5, 6], [7, 8, 9]])) # Can't reference a col-major array with a row-major Ref, and vice versa: with pytest.raises(TypeError): - add_rm(zc, 1, 0, 1) + m.add_rm(zc, 1, 0, 1) with pytest.raises(TypeError): - add_cm(zr, 1, 0, 1) + m.add_cm(zr, 1, 0, 1) # Overloads: - add1(zr, 1, 0, -100) - add2(zr, 1, 0, -20) + m.add1(zr, 1, 0, -100) + m.add2(zr, 1, 0, -20) assert np.all(zr == orig) - add1(zc, 1, 0, -200) - add2(zc, 1, 0, -10) + m.add1(zc, 1, 0, -200) + m.add2(zc, 1, 0, -10) assert np.all(zc == orig) # a non-contiguous slice (this won't work on either the row- or @@ -378,15 +411,15 @@ def test_eigen_ref_mutators(): assert np.all(cornersc == np.array([[1., 3], [7, 9]])) with pytest.raises(TypeError): - add_rm(cornersr, 0, 1, 25) + m.add_rm(cornersr, 0, 1, 25) with pytest.raises(TypeError): - add_cm(cornersr, 0, 1, 25) + m.add_cm(cornersr, 0, 1, 25) with pytest.raises(TypeError): - add_rm(cornersc, 0, 1, 25) + m.add_rm(cornersc, 0, 1, 25) with pytest.raises(TypeError): - add_cm(cornersc, 0, 1, 25) - add_any(cornersr, 0, 1, 25) - add_any(cornersc, 0, 1, 44) + m.add_cm(cornersc, 0, 1, 25) + m.add_any(cornersr, 0, 1, 25) + m.add_any(cornersc, 0, 1, 44) assert np.all(zr == np.array([[1., 2, 28], [4, 5, 6], [7, 8, 9]])) assert np.all(zc == np.array([[1., 2, 47], [4, 5, 6], [7, 8, 9]])) @@ -394,30 +427,29 @@ def test_eigen_ref_mutators(): zro = zr[0:4, 0:4] zro.flags.writeable = False with pytest.raises(TypeError): - add_rm(zro, 0, 0, 0) + m.add_rm(zro, 0, 0, 0) with pytest.raises(TypeError): - add_any(zro, 0, 0, 0) + m.add_any(zro, 0, 0, 0) with pytest.raises(TypeError): - add1(zro, 0, 0, 0) + m.add1(zro, 0, 0, 0) with pytest.raises(TypeError): - add2(zro, 0, 0, 0) + m.add2(zro, 0, 0, 0) # integer array shouldn't be passable to a double-matrix-accepting mutating func: zi = np.array([[1, 2], [3, 4]]) with pytest.raises(TypeError): - add_rm(zi) + m.add_rm(zi) def test_numpy_ref_mutators(): """Tests numpy mutating Eigen matrices (for returned Eigen::Ref<...>s)""" - from pybind11_tests import ( - get_cm_ref, get_cm_const_ref, get_rm_ref, get_rm_const_ref, reset_refs) - reset_refs() # In case another test already changed it - zc = get_cm_ref() - zcro = get_cm_const_ref() - zr = get_rm_ref() - zrro = get_rm_const_ref() + m.reset_refs() # In case another test already changed it + + zc = m.get_cm_ref() + zcro = m.get_cm_const_ref() + zr = m.get_rm_ref() + zrro = m.get_rm_const_ref() assert [zc[1, 2], zcro[1, 2], zr[1, 2], zrro[1, 2]] == [23] * 4 @@ -431,12 +463,12 @@ def test_numpy_ref_mutators(): # We should have just changed zc, of course, but also zcro and the original eigen matrix assert np.all(zc == expect) assert np.all(zcro == expect) - assert np.all(get_cm_ref() == expect) + assert np.all(m.get_cm_ref() == expect) zr[1, 2] = 99 assert np.all(zr == expect) assert np.all(zrro == expect) - assert np.all(get_rm_ref() == expect) + assert np.all(m.get_rm_ref() == expect) # Make sure the readonly ones are numpy-readonly: with pytest.raises(ValueError): @@ -446,7 +478,7 @@ def test_numpy_ref_mutators(): # We should be able to explicitly copy like this (and since we're copying, # the const should drop away) - y1 = np.array(get_cm_const_ref()) + y1 = np.array(m.get_cm_const_ref()) assert y1.flags.owndata and y1.flags.writeable # We should get copies of the eigen data, which was modified above: @@ -458,19 +490,18 @@ def test_numpy_ref_mutators(): def test_both_ref_mutators(): """Tests a complex chain of nested eigen/numpy references""" - from pybind11_tests import ( - incr_matrix, get_cm_ref, incr_matrix_any, even_cols, even_rows, reset_refs) - reset_refs() # In case another test already changed it - z = get_cm_ref() # numpy -> eigen + m.reset_refs() # In case another test already changed it + + z = m.get_cm_ref() # numpy -> eigen z[0, 2] -= 3 - z2 = incr_matrix(z, 1) # numpy -> eigen -> numpy -> eigen + z2 = m.incr_matrix(z, 1) # numpy -> eigen -> numpy -> eigen z2[1, 1] += 6 - z3 = incr_matrix(z, 2) # (numpy -> eigen)^3 + z3 = m.incr_matrix(z, 2) # (numpy -> eigen)^3 z3[2, 2] += -5 - z4 = incr_matrix(z, 3) # (numpy -> eigen)^4 + z4 = m.incr_matrix(z, 3) # (numpy -> eigen)^4 z4[1, 1] -= 1 - z5 = incr_matrix(z, 4) # (numpy -> eigen)^5 + z5 = m.incr_matrix(z, 4) # (numpy -> eigen)^5 z5[0, 0] = 0 assert np.all(z == z2) assert np.all(z == z3) @@ -480,11 +511,11 @@ def test_both_ref_mutators(): assert np.all(z == expect) y = np.array(range(100), dtype='float64').reshape(10, 10) - y2 = incr_matrix_any(y, 10) # np -> eigen -> np - y3 = incr_matrix_any(y2[0::2, 0::2], -33) # np -> eigen -> np slice -> np -> eigen -> np - y4 = even_rows(y3) # numpy -> eigen slice -> (... y3) - y5 = even_cols(y4) # numpy -> eigen slice -> (... y4) - y6 = incr_matrix_any(y5, 1000) # numpy -> eigen -> (... y5) + y2 = m.incr_matrix_any(y, 10) # np -> eigen -> np + y3 = m.incr_matrix_any(y2[0::2, 0::2], -33) # np -> eigen -> np slice -> np -> eigen -> np + y4 = m.even_rows(y3) # numpy -> eigen slice -> (... y3) + y5 = m.even_cols(y4) # numpy -> eigen slice -> (... y4) + y6 = m.incr_matrix_any(y5, 1000) # numpy -> eigen -> (... y5) # Apply same mutations using just numpy: yexpect = np.array(range(100), dtype='float64').reshape(10, 10) @@ -500,7 +531,6 @@ def test_both_ref_mutators(): def test_nocopy_wrapper(): - from pybind11_tests import get_elem, get_elem_nocopy, get_elem_rm_nocopy # get_elem requires a column-contiguous matrix reference, but should be # callable with other types of matrix (via copying): int_matrix_colmajor = np.array([[1, 2, 3], [4, 5, 6], [7, 8, 9]], order='F') @@ -509,46 +539,58 @@ def test_nocopy_wrapper(): dbl_matrix_rowmajor = np.array(int_matrix_rowmajor, dtype='double', order='C', copy=True) # All should be callable via get_elem: - assert get_elem(int_matrix_colmajor) == 8 - assert get_elem(dbl_matrix_colmajor) == 8 - assert get_elem(int_matrix_rowmajor) == 8 - assert get_elem(dbl_matrix_rowmajor) == 8 + assert m.get_elem(int_matrix_colmajor) == 8 + assert m.get_elem(dbl_matrix_colmajor) == 8 + assert m.get_elem(int_matrix_rowmajor) == 8 + assert m.get_elem(dbl_matrix_rowmajor) == 8 - # All but the second should fail with get_elem_nocopy: + # All but the second should fail with m.get_elem_nocopy: with pytest.raises(TypeError) as excinfo: - get_elem_nocopy(int_matrix_colmajor) + m.get_elem_nocopy(int_matrix_colmajor) assert ('get_elem_nocopy(): incompatible function arguments.' in str(excinfo.value) and ', flags.f_contiguous' in str(excinfo.value)) - assert get_elem_nocopy(dbl_matrix_colmajor) == 8 + assert m.get_elem_nocopy(dbl_matrix_colmajor) == 8 with pytest.raises(TypeError) as excinfo: - get_elem_nocopy(int_matrix_rowmajor) + m.get_elem_nocopy(int_matrix_rowmajor) assert ('get_elem_nocopy(): incompatible function arguments.' in str(excinfo.value) and ', flags.f_contiguous' in str(excinfo.value)) with pytest.raises(TypeError) as excinfo: - get_elem_nocopy(dbl_matrix_rowmajor) + m.get_elem_nocopy(dbl_matrix_rowmajor) assert ('get_elem_nocopy(): incompatible function arguments.' in str(excinfo.value) and ', flags.f_contiguous' in str(excinfo.value)) # For the row-major test, we take a long matrix in row-major, so only the third is allowed: with pytest.raises(TypeError) as excinfo: - get_elem_rm_nocopy(int_matrix_colmajor) + m.get_elem_rm_nocopy(int_matrix_colmajor) assert ('get_elem_rm_nocopy(): incompatible function arguments.' in str(excinfo.value) and ', flags.c_contiguous' in str(excinfo.value)) with pytest.raises(TypeError) as excinfo: - get_elem_rm_nocopy(dbl_matrix_colmajor) + m.get_elem_rm_nocopy(dbl_matrix_colmajor) assert ('get_elem_rm_nocopy(): incompatible function arguments.' in str(excinfo.value) and ', flags.c_contiguous' in str(excinfo.value)) - assert get_elem_rm_nocopy(int_matrix_rowmajor) == 8 + assert m.get_elem_rm_nocopy(int_matrix_rowmajor) == 8 with pytest.raises(TypeError) as excinfo: - get_elem_rm_nocopy(dbl_matrix_rowmajor) + m.get_elem_rm_nocopy(dbl_matrix_rowmajor) assert ('get_elem_rm_nocopy(): incompatible function arguments.' in str(excinfo.value) and ', flags.c_contiguous' in str(excinfo.value)) -def test_special_matrix_objects(): - from pybind11_tests import incr_diag, symmetric_upper, symmetric_lower +def test_eigen_ref_life_support(): + """Ensure the lifetime of temporary arrays created by the `Ref` caster + + The `Ref` caster sometimes creates a copy which needs to stay alive. This needs to + happen both for directs casts (just the array) or indirectly (e.g. list of arrays). + """ + + a = np.full(shape=10, fill_value=8, dtype=np.int8) + assert m.get_elem_direct(a) == 8 + + list_of_a = [a] + assert m.get_elem_indirect(list_of_a) == 8 - assert np.all(incr_diag(7) == np.diag([1., 2, 3, 4, 5, 6, 7])) + +def test_special_matrix_objects(): + assert np.all(m.incr_diag(7) == np.diag([1., 2, 3, 4, 5, 6, 7])) asymm = np.array([[ 1., 2, 3, 4], [ 5, 6, 7, 8], @@ -561,66 +603,79 @@ def test_special_matrix_objects(): symm_lower[i, j] = symm_lower[j, i] symm_upper[j, i] = symm_upper[i, j] - assert np.all(symmetric_lower(asymm) == symm_lower) - assert np.all(symmetric_upper(asymm) == symm_upper) + assert np.all(m.symmetric_lower(asymm) == symm_lower) + assert np.all(m.symmetric_upper(asymm) == symm_upper) def test_dense_signature(doc): - from pybind11_tests import double_col, double_row, double_complex, double_mat_rm - - assert doc(double_col) == """ + assert doc(m.double_col) == """ double_col(arg0: numpy.ndarray[float32[m, 1]]) -> numpy.ndarray[float32[m, 1]] """ - assert doc(double_row) == """ + assert doc(m.double_row) == """ double_row(arg0: numpy.ndarray[float32[1, n]]) -> numpy.ndarray[float32[1, n]] """ - assert doc(double_complex) == """ + assert doc(m.double_complex) == """ double_complex(arg0: numpy.ndarray[complex64[m, 1]]) -> numpy.ndarray[complex64[m, 1]] """ - assert doc(double_mat_rm) == """ + assert doc(m.double_mat_rm) == """ double_mat_rm(arg0: numpy.ndarray[float32[m, n]]) -> numpy.ndarray[float32[m, n]] """ +def test_named_arguments(): + a = np.array([[1.0, 2], [3, 4], [5, 6]]) + b = np.ones((2, 1)) + + assert np.all(m.matrix_multiply(a, b) == np.array([[3.], [7], [11]])) + assert np.all(m.matrix_multiply(A=a, B=b) == np.array([[3.], [7], [11]])) + assert np.all(m.matrix_multiply(B=b, A=a) == np.array([[3.], [7], [11]])) + + with pytest.raises(ValueError) as excinfo: + m.matrix_multiply(b, a) + assert str(excinfo.value) == 'Nonconformable matrices!' + + with pytest.raises(ValueError) as excinfo: + m.matrix_multiply(A=b, B=a) + assert str(excinfo.value) == 'Nonconformable matrices!' + + with pytest.raises(ValueError) as excinfo: + m.matrix_multiply(B=a, A=b) + assert str(excinfo.value) == 'Nonconformable matrices!' + + @pytest.requires_eigen_and_scipy def test_sparse(): - from pybind11_tests import sparse_r, sparse_c, sparse_copy_r, sparse_copy_c - - assert_sparse_equal_ref(sparse_r()) - assert_sparse_equal_ref(sparse_c()) - assert_sparse_equal_ref(sparse_copy_r(sparse_r())) - assert_sparse_equal_ref(sparse_copy_c(sparse_c())) - assert_sparse_equal_ref(sparse_copy_r(sparse_c())) - assert_sparse_equal_ref(sparse_copy_c(sparse_r())) + assert_sparse_equal_ref(m.sparse_r()) + assert_sparse_equal_ref(m.sparse_c()) + assert_sparse_equal_ref(m.sparse_copy_r(m.sparse_r())) + assert_sparse_equal_ref(m.sparse_copy_c(m.sparse_c())) + assert_sparse_equal_ref(m.sparse_copy_r(m.sparse_c())) + assert_sparse_equal_ref(m.sparse_copy_c(m.sparse_r())) @pytest.requires_eigen_and_scipy def test_sparse_signature(doc): - from pybind11_tests import sparse_copy_r, sparse_copy_c - - assert doc(sparse_copy_r) == """ + assert doc(m.sparse_copy_r) == """ sparse_copy_r(arg0: scipy.sparse.csr_matrix[float32]) -> scipy.sparse.csr_matrix[float32] """ # noqa: E501 line too long - assert doc(sparse_copy_c) == """ + assert doc(m.sparse_copy_c) == """ sparse_copy_c(arg0: scipy.sparse.csc_matrix[float32]) -> scipy.sparse.csc_matrix[float32] """ # noqa: E501 line too long def test_issue738(): - from pybind11_tests import iss738_f1, iss738_f2 - - assert np.all(iss738_f1(np.array([[1., 2, 3]])) == np.array([[1., 102, 203]])) - assert np.all(iss738_f1(np.array([[1.], [2], [3]])) == np.array([[1.], [12], [23]])) + """Ignore strides on a length-1 dimension (even if they would be incompatible length > 1)""" + assert np.all(m.iss738_f1(np.array([[1., 2, 3]])) == np.array([[1., 102, 203]])) + assert np.all(m.iss738_f1(np.array([[1.], [2], [3]])) == np.array([[1.], [12], [23]])) - assert np.all(iss738_f2(np.array([[1., 2, 3]])) == np.array([[1., 102, 203]])) - assert np.all(iss738_f2(np.array([[1.], [2], [3]])) == np.array([[1.], [12], [23]])) + assert np.all(m.iss738_f2(np.array([[1., 2, 3]])) == np.array([[1., 102, 203]])) + assert np.all(m.iss738_f2(np.array([[1.], [2], [3]])) == np.array([[1.], [12], [23]])) def test_custom_operator_new(): """Using Eigen types as member variables requires a class-specific operator new with proper alignment""" - from pybind11_tests import CustomOperatorNew - o = CustomOperatorNew() + o = m.CustomOperatorNew() np.testing.assert_allclose(o.a, 0.0) np.testing.assert_allclose(o.b.diagonal(), 1.0) diff --git a/ext/pybind11/tests/test_embed/CMakeLists.txt b/ext/pybind11/tests/test_embed/CMakeLists.txt new file mode 100644 index 000000000..0a43e0e22 --- /dev/null +++ b/ext/pybind11/tests/test_embed/CMakeLists.txt @@ -0,0 +1,34 @@ +if(${PYTHON_MODULE_EXTENSION} MATCHES "pypy") + add_custom_target(cpptest) # Dummy target on PyPy. Embedding is not supported. + set(_suppress_unused_variable_warning "${DOWNLOAD_CATCH}") + return() +endif() + +find_package(Catch 1.9.3) +if(NOT CATCH_FOUND) + message(STATUS "Catch not detected. Interpreter tests will be skipped. Install Catch headers" + " manually or use `cmake -DDOWNLOAD_CATCH=1` to fetch them automatically.") + return() +endif() + +add_executable(test_embed + catch.cpp + test_interpreter.cpp +) +target_include_directories(test_embed PRIVATE ${CATCH_INCLUDE_DIR}) +pybind11_enable_warnings(test_embed) + +if(NOT CMAKE_VERSION VERSION_LESS 3.0) + target_link_libraries(test_embed PRIVATE pybind11::embed) +else() + target_include_directories(test_embed PRIVATE ${PYBIND11_INCLUDE_DIR} ${PYTHON_INCLUDE_DIRS}) + target_compile_options(test_embed PRIVATE ${PYBIND11_CPP_STANDARD}) + target_link_libraries(test_embed PRIVATE ${PYTHON_LIBRARIES}) +endif() + +find_package(Threads REQUIRED) +target_link_libraries(test_embed PUBLIC ${CMAKE_THREAD_LIBS_INIT}) + +add_custom_target(cpptest COMMAND $<TARGET_FILE:test_embed> + WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}) +add_dependencies(check cpptest) diff --git a/ext/pybind11/tests/test_embed/catch.cpp b/ext/pybind11/tests/test_embed/catch.cpp new file mode 100644 index 000000000..cface485d --- /dev/null +++ b/ext/pybind11/tests/test_embed/catch.cpp @@ -0,0 +1,16 @@ +// The Catch implementation is compiled here. This is a standalone +// translation unit to avoid recompiling it for every test change. + +#include <pybind11/embed.h> + +#define CATCH_CONFIG_RUNNER +#include <catch.hpp> + +namespace py = pybind11; + +int main(int argc, const char *argv[]) { + py::scoped_interpreter guard{}; + auto result = Catch::Session().run(argc, argv); + + return result < 0xff ? result : 0xff; +} diff --git a/ext/pybind11/tests/test_embed/test_interpreter.cpp b/ext/pybind11/tests/test_embed/test_interpreter.cpp new file mode 100644 index 000000000..6b5f051f2 --- /dev/null +++ b/ext/pybind11/tests/test_embed/test_interpreter.cpp @@ -0,0 +1,269 @@ +#include <pybind11/embed.h> +#include <catch.hpp> + +#include <thread> +#include <fstream> +#include <functional> + +namespace py = pybind11; +using namespace py::literals; + +class Widget { +public: + Widget(std::string message) : message(message) { } + virtual ~Widget() = default; + + std::string the_message() const { return message; } + virtual int the_answer() const = 0; + +private: + std::string message; +}; + +class PyWidget final : public Widget { + using Widget::Widget; + + int the_answer() const override { PYBIND11_OVERLOAD_PURE(int, Widget, the_answer); } +}; + +PYBIND11_EMBEDDED_MODULE(widget_module, m) { + py::class_<Widget, PyWidget>(m, "Widget") + .def(py::init<std::string>()) + .def_property_readonly("the_message", &Widget::the_message); + + m.def("add", [](int i, int j) { return i + j; }); +} + +PYBIND11_EMBEDDED_MODULE(throw_exception, ) { + throw std::runtime_error("C++ Error"); +} + +PYBIND11_EMBEDDED_MODULE(throw_error_already_set, ) { + auto d = py::dict(); + d["missing"].cast<py::object>(); +} + +TEST_CASE("Pass classes and data between modules defined in C++ and Python") { + auto module = py::module::import("test_interpreter"); + REQUIRE(py::hasattr(module, "DerivedWidget")); + + auto locals = py::dict("hello"_a="Hello, World!", "x"_a=5, **module.attr("__dict__")); + py::exec(R"( + widget = DerivedWidget("{} - {}".format(hello, x)) + message = widget.the_message + )", py::globals(), locals); + REQUIRE(locals["message"].cast<std::string>() == "Hello, World! - 5"); + + auto py_widget = module.attr("DerivedWidget")("The question"); + auto message = py_widget.attr("the_message"); + REQUIRE(message.cast<std::string>() == "The question"); + + const auto &cpp_widget = py_widget.cast<const Widget &>(); + REQUIRE(cpp_widget.the_answer() == 42); +} + +TEST_CASE("Import error handling") { + REQUIRE_NOTHROW(py::module::import("widget_module")); + REQUIRE_THROWS_WITH(py::module::import("throw_exception"), + "ImportError: C++ Error"); + REQUIRE_THROWS_WITH(py::module::import("throw_error_already_set"), + Catch::Contains("ImportError: KeyError")); +} + +TEST_CASE("There can be only one interpreter") { + static_assert(std::is_move_constructible<py::scoped_interpreter>::value, ""); + static_assert(!std::is_move_assignable<py::scoped_interpreter>::value, ""); + static_assert(!std::is_copy_constructible<py::scoped_interpreter>::value, ""); + static_assert(!std::is_copy_assignable<py::scoped_interpreter>::value, ""); + + REQUIRE_THROWS_WITH(py::initialize_interpreter(), "The interpreter is already running"); + REQUIRE_THROWS_WITH(py::scoped_interpreter(), "The interpreter is already running"); + + py::finalize_interpreter(); + REQUIRE_NOTHROW(py::scoped_interpreter()); + { + auto pyi1 = py::scoped_interpreter(); + auto pyi2 = std::move(pyi1); + } + py::initialize_interpreter(); +} + +bool has_pybind11_internals_builtin() { + auto builtins = py::handle(PyEval_GetBuiltins()); + return builtins.contains(PYBIND11_INTERNALS_ID); +}; + +bool has_pybind11_internals_static() { + return py::detail::get_internals_ptr() != nullptr; +} + +TEST_CASE("Restart the interpreter") { + // Verify pre-restart state. + REQUIRE(py::module::import("widget_module").attr("add")(1, 2).cast<int>() == 3); + REQUIRE(has_pybind11_internals_builtin()); + REQUIRE(has_pybind11_internals_static()); + + // Restart the interpreter. + py::finalize_interpreter(); + REQUIRE(Py_IsInitialized() == 0); + + py::initialize_interpreter(); + REQUIRE(Py_IsInitialized() == 1); + + // Internals are deleted after a restart. + REQUIRE_FALSE(has_pybind11_internals_builtin()); + REQUIRE_FALSE(has_pybind11_internals_static()); + pybind11::detail::get_internals(); + REQUIRE(has_pybind11_internals_builtin()); + REQUIRE(has_pybind11_internals_static()); + + // Make sure that an interpreter with no get_internals() created until finalize still gets the + // internals destroyed + py::finalize_interpreter(); + py::initialize_interpreter(); + bool ran = false; + py::module::import("__main__").attr("internals_destroy_test") = + py::capsule(&ran, [](void *ran) { py::detail::get_internals(); *static_cast<bool *>(ran) = true; }); + REQUIRE_FALSE(has_pybind11_internals_builtin()); + REQUIRE_FALSE(has_pybind11_internals_static()); + REQUIRE_FALSE(ran); + py::finalize_interpreter(); + REQUIRE(ran); + py::initialize_interpreter(); + REQUIRE_FALSE(has_pybind11_internals_builtin()); + REQUIRE_FALSE(has_pybind11_internals_static()); + + // C++ modules can be reloaded. + auto cpp_module = py::module::import("widget_module"); + REQUIRE(cpp_module.attr("add")(1, 2).cast<int>() == 3); + + // C++ type information is reloaded and can be used in python modules. + auto py_module = py::module::import("test_interpreter"); + auto py_widget = py_module.attr("DerivedWidget")("Hello after restart"); + REQUIRE(py_widget.attr("the_message").cast<std::string>() == "Hello after restart"); +} + +TEST_CASE("Subinterpreter") { + // Add tags to the modules in the main interpreter and test the basics. + py::module::import("__main__").attr("main_tag") = "main interpreter"; + { + auto m = py::module::import("widget_module"); + m.attr("extension_module_tag") = "added to module in main interpreter"; + + REQUIRE(m.attr("add")(1, 2).cast<int>() == 3); + } + REQUIRE(has_pybind11_internals_builtin()); + REQUIRE(has_pybind11_internals_static()); + + /// Create and switch to a subinterpreter. + auto main_tstate = PyThreadState_Get(); + auto sub_tstate = Py_NewInterpreter(); + + // Subinterpreters get their own copy of builtins. detail::get_internals() still + // works by returning from the static variable, i.e. all interpreters share a single + // global pybind11::internals; + REQUIRE_FALSE(has_pybind11_internals_builtin()); + REQUIRE(has_pybind11_internals_static()); + + // Modules tags should be gone. + REQUIRE_FALSE(py::hasattr(py::module::import("__main__"), "tag")); + { + auto m = py::module::import("widget_module"); + REQUIRE_FALSE(py::hasattr(m, "extension_module_tag")); + + // Function bindings should still work. + REQUIRE(m.attr("add")(1, 2).cast<int>() == 3); + } + + // Restore main interpreter. + Py_EndInterpreter(sub_tstate); + PyThreadState_Swap(main_tstate); + + REQUIRE(py::hasattr(py::module::import("__main__"), "main_tag")); + REQUIRE(py::hasattr(py::module::import("widget_module"), "extension_module_tag")); +} + +TEST_CASE("Execution frame") { + // When the interpreter is embedded, there is no execution frame, but `py::exec` + // should still function by using reasonable globals: `__main__.__dict__`. + py::exec("var = dict(number=42)"); + REQUIRE(py::globals()["var"]["number"].cast<int>() == 42); +} + +TEST_CASE("Threads") { + // Restart interpreter to ensure threads are not initialized + py::finalize_interpreter(); + py::initialize_interpreter(); + REQUIRE_FALSE(has_pybind11_internals_static()); + + constexpr auto num_threads = 10; + auto locals = py::dict("count"_a=0); + + { + py::gil_scoped_release gil_release{}; + REQUIRE(has_pybind11_internals_static()); + + auto threads = std::vector<std::thread>(); + for (auto i = 0; i < num_threads; ++i) { + threads.emplace_back([&]() { + py::gil_scoped_acquire gil{}; + locals["count"] = locals["count"].cast<int>() + 1; + }); + } + + for (auto &thread : threads) { + thread.join(); + } + } + + REQUIRE(locals["count"].cast<int>() == num_threads); +} + +// Scope exit utility https://stackoverflow.com/a/36644501/7255855 +struct scope_exit { + std::function<void()> f_; + explicit scope_exit(std::function<void()> f) noexcept : f_(std::move(f)) {} + ~scope_exit() { if (f_) f_(); } +}; + +TEST_CASE("Reload module from file") { + // Disable generation of cached bytecode (.pyc files) for this test, otherwise + // Python might pick up an old version from the cache instead of the new versions + // of the .py files generated below + auto sys = py::module::import("sys"); + bool dont_write_bytecode = sys.attr("dont_write_bytecode").cast<bool>(); + sys.attr("dont_write_bytecode") = true; + // Reset the value at scope exit + scope_exit reset_dont_write_bytecode([&]() { + sys.attr("dont_write_bytecode") = dont_write_bytecode; + }); + + std::string module_name = "test_module_reload"; + std::string module_file = module_name + ".py"; + + // Create the module .py file + std::ofstream test_module(module_file); + test_module << "def test():\n"; + test_module << " return 1\n"; + test_module.close(); + // Delete the file at scope exit + scope_exit delete_module_file([&]() { + std::remove(module_file.c_str()); + }); + + // Import the module from file + auto module = py::module::import(module_name.c_str()); + int result = module.attr("test")().cast<int>(); + REQUIRE(result == 1); + + // Update the module .py file with a small change + test_module.open(module_file); + test_module << "def test():\n"; + test_module << " return 2\n"; + test_module.close(); + + // Reload the module + module.reload(); + result = module.attr("test")().cast<int>(); + REQUIRE(result == 2); +} diff --git a/ext/pybind11/tests/test_embed/test_interpreter.py b/ext/pybind11/tests/test_embed/test_interpreter.py new file mode 100644 index 000000000..26a047921 --- /dev/null +++ b/ext/pybind11/tests/test_embed/test_interpreter.py @@ -0,0 +1,9 @@ +from widget_module import Widget + + +class DerivedWidget(Widget): + def __init__(self, message): + super(DerivedWidget, self).__init__(message) + + def the_answer(self): + return 42 diff --git a/ext/pybind11/tests/test_enum.cpp b/ext/pybind11/tests/test_enum.cpp index 09f334cdb..49f31ba1f 100644 --- a/ext/pybind11/tests/test_enum.cpp +++ b/ext/pybind11/tests/test_enum.cpp @@ -9,60 +9,63 @@ #include "pybind11_tests.h" -enum UnscopedEnum { - EOne = 1, - ETwo -}; - -enum class ScopedEnum { - Two = 2, - Three -}; - -enum Flags { - Read = 4, - Write = 2, - Execute = 1 -}; - -class ClassWithUnscopedEnum { -public: - enum EMode { - EFirstMode = 1, - ESecondMode +TEST_SUBMODULE(enums, m) { + // test_unscoped_enum + enum UnscopedEnum { + EOne = 1, + ETwo }; - - static EMode test_function(EMode mode) { - return mode; - } -}; - -std::string test_scoped_enum(ScopedEnum z) { - return "ScopedEnum::" + std::string(z == ScopedEnum::Two ? "Two" : "Three"); -} - -test_initializer enums([](py::module &m) { - m.def("test_scoped_enum", &test_scoped_enum); - py::enum_<UnscopedEnum>(m, "UnscopedEnum", py::arithmetic()) .value("EOne", EOne) .value("ETwo", ETwo) .export_values(); + // test_scoped_enum + enum class ScopedEnum { + Two = 2, + Three + }; py::enum_<ScopedEnum>(m, "ScopedEnum", py::arithmetic()) .value("Two", ScopedEnum::Two) .value("Three", ScopedEnum::Three); + m.def("test_scoped_enum", [](ScopedEnum z) { + return "ScopedEnum::" + std::string(z == ScopedEnum::Two ? "Two" : "Three"); + }); + + // test_binary_operators + enum Flags { + Read = 4, + Write = 2, + Execute = 1 + }; py::enum_<Flags>(m, "Flags", py::arithmetic()) .value("Read", Flags::Read) .value("Write", Flags::Write) .value("Execute", Flags::Execute) .export_values(); + // test_implicit_conversion + class ClassWithUnscopedEnum { + public: + enum EMode { + EFirstMode = 1, + ESecondMode + }; + + static EMode test_function(EMode mode) { + return mode; + } + }; py::class_<ClassWithUnscopedEnum> exenum_class(m, "ClassWithUnscopedEnum"); exenum_class.def_static("test_function", &ClassWithUnscopedEnum::test_function); py::enum_<ClassWithUnscopedEnum::EMode>(exenum_class, "EMode") .value("EFirstMode", ClassWithUnscopedEnum::EFirstMode) .value("ESecondMode", ClassWithUnscopedEnum::ESecondMode) .export_values(); -}); + + // test_enum_to_int + m.def("test_enum_to_int", [](int) { }); + m.def("test_enum_to_uint", [](uint32_t) { }); + m.def("test_enum_to_long_long", [](long long) { }); +} diff --git a/ext/pybind11/tests/test_enum.py b/ext/pybind11/tests/test_enum.py index ba7e22ab0..d8eff5278 100644 --- a/ext/pybind11/tests/test_enum.py +++ b/ext/pybind11/tests/test_enum.py @@ -1,51 +1,50 @@ import pytest +from pybind11_tests import enums as m def test_unscoped_enum(): - from pybind11_tests import UnscopedEnum, EOne - - assert str(UnscopedEnum.EOne) == "UnscopedEnum.EOne" - assert str(UnscopedEnum.ETwo) == "UnscopedEnum.ETwo" - assert str(EOne) == "UnscopedEnum.EOne" + assert str(m.UnscopedEnum.EOne) == "UnscopedEnum.EOne" + assert str(m.UnscopedEnum.ETwo) == "UnscopedEnum.ETwo" + assert str(m.EOne) == "UnscopedEnum.EOne" # __members__ property - assert UnscopedEnum.__members__ == {"EOne": UnscopedEnum.EOne, "ETwo": UnscopedEnum.ETwo} + assert m.UnscopedEnum.__members__ == \ + {"EOne": m.UnscopedEnum.EOne, "ETwo": m.UnscopedEnum.ETwo} # __members__ readonly with pytest.raises(AttributeError): - UnscopedEnum.__members__ = {} + m.UnscopedEnum.__members__ = {} # __members__ returns a copy - foo = UnscopedEnum.__members__ + foo = m.UnscopedEnum.__members__ foo["bar"] = "baz" - assert UnscopedEnum.__members__ == {"EOne": UnscopedEnum.EOne, "ETwo": UnscopedEnum.ETwo} + assert m.UnscopedEnum.__members__ == \ + {"EOne": m.UnscopedEnum.EOne, "ETwo": m.UnscopedEnum.ETwo} # no TypeError exception for unscoped enum ==/!= int comparisons - y = UnscopedEnum.ETwo + y = m.UnscopedEnum.ETwo assert y == 2 assert y != 3 - assert int(UnscopedEnum.ETwo) == 2 - assert str(UnscopedEnum(2)) == "UnscopedEnum.ETwo" + assert int(m.UnscopedEnum.ETwo) == 2 + assert str(m.UnscopedEnum(2)) == "UnscopedEnum.ETwo" # order - assert UnscopedEnum.EOne < UnscopedEnum.ETwo - assert UnscopedEnum.EOne < 2 - assert UnscopedEnum.ETwo > UnscopedEnum.EOne - assert UnscopedEnum.ETwo > 1 - assert UnscopedEnum.ETwo <= 2 - assert UnscopedEnum.ETwo >= 2 - assert UnscopedEnum.EOne <= UnscopedEnum.ETwo - assert UnscopedEnum.EOne <= 2 - assert UnscopedEnum.ETwo >= UnscopedEnum.EOne - assert UnscopedEnum.ETwo >= 1 - assert not (UnscopedEnum.ETwo < UnscopedEnum.EOne) - assert not (2 < UnscopedEnum.EOne) + assert m.UnscopedEnum.EOne < m.UnscopedEnum.ETwo + assert m.UnscopedEnum.EOne < 2 + assert m.UnscopedEnum.ETwo > m.UnscopedEnum.EOne + assert m.UnscopedEnum.ETwo > 1 + assert m.UnscopedEnum.ETwo <= 2 + assert m.UnscopedEnum.ETwo >= 2 + assert m.UnscopedEnum.EOne <= m.UnscopedEnum.ETwo + assert m.UnscopedEnum.EOne <= 2 + assert m.UnscopedEnum.ETwo >= m.UnscopedEnum.EOne + assert m.UnscopedEnum.ETwo >= 1 + assert not (m.UnscopedEnum.ETwo < m.UnscopedEnum.EOne) + assert not (2 < m.UnscopedEnum.EOne) def test_scoped_enum(): - from pybind11_tests import ScopedEnum, test_scoped_enum - - assert test_scoped_enum(ScopedEnum.Three) == "ScopedEnum::Three" - z = ScopedEnum.Two - assert test_scoped_enum(z) == "ScopedEnum::Two" + assert m.test_scoped_enum(m.ScopedEnum.Three) == "ScopedEnum::Three" + z = m.ScopedEnum.Two + assert m.test_scoped_enum(z) == "ScopedEnum::Two" # expected TypeError exceptions for scoped enum ==/!= int comparisons with pytest.raises(TypeError): @@ -54,23 +53,21 @@ def test_scoped_enum(): assert z != 3 # order - assert ScopedEnum.Two < ScopedEnum.Three - assert ScopedEnum.Three > ScopedEnum.Two - assert ScopedEnum.Two <= ScopedEnum.Three - assert ScopedEnum.Two <= ScopedEnum.Two - assert ScopedEnum.Two >= ScopedEnum.Two - assert ScopedEnum.Three >= ScopedEnum.Two + assert m.ScopedEnum.Two < m.ScopedEnum.Three + assert m.ScopedEnum.Three > m.ScopedEnum.Two + assert m.ScopedEnum.Two <= m.ScopedEnum.Three + assert m.ScopedEnum.Two <= m.ScopedEnum.Two + assert m.ScopedEnum.Two >= m.ScopedEnum.Two + assert m.ScopedEnum.Three >= m.ScopedEnum.Two def test_implicit_conversion(): - from pybind11_tests import ClassWithUnscopedEnum - - assert str(ClassWithUnscopedEnum.EMode.EFirstMode) == "EMode.EFirstMode" - assert str(ClassWithUnscopedEnum.EFirstMode) == "EMode.EFirstMode" + assert str(m.ClassWithUnscopedEnum.EMode.EFirstMode) == "EMode.EFirstMode" + assert str(m.ClassWithUnscopedEnum.EFirstMode) == "EMode.EFirstMode" - f = ClassWithUnscopedEnum.test_function - first = ClassWithUnscopedEnum.EFirstMode - second = ClassWithUnscopedEnum.ESecondMode + f = m.ClassWithUnscopedEnum.test_function + first = m.ClassWithUnscopedEnum.EFirstMode + second = m.ClassWithUnscopedEnum.ESecondMode assert f(first) == 1 @@ -95,23 +92,30 @@ def test_implicit_conversion(): def test_binary_operators(): - from pybind11_tests import Flags - - assert int(Flags.Read) == 4 - assert int(Flags.Write) == 2 - assert int(Flags.Execute) == 1 - assert int(Flags.Read | Flags.Write | Flags.Execute) == 7 - assert int(Flags.Read | Flags.Write) == 6 - assert int(Flags.Read | Flags.Execute) == 5 - assert int(Flags.Write | Flags.Execute) == 3 - assert int(Flags.Write | 1) == 3 - - state = Flags.Read | Flags.Write - assert (state & Flags.Read) != 0 - assert (state & Flags.Write) != 0 - assert (state & Flags.Execute) == 0 + assert int(m.Flags.Read) == 4 + assert int(m.Flags.Write) == 2 + assert int(m.Flags.Execute) == 1 + assert int(m.Flags.Read | m.Flags.Write | m.Flags.Execute) == 7 + assert int(m.Flags.Read | m.Flags.Write) == 6 + assert int(m.Flags.Read | m.Flags.Execute) == 5 + assert int(m.Flags.Write | m.Flags.Execute) == 3 + assert int(m.Flags.Write | 1) == 3 + + state = m.Flags.Read | m.Flags.Write + assert (state & m.Flags.Read) != 0 + assert (state & m.Flags.Write) != 0 + assert (state & m.Flags.Execute) == 0 assert (state & 1) == 0 state2 = ~state assert state2 == -7 assert int(state ^ state2) == -1 + + +def test_enum_to_int(): + m.test_enum_to_int(m.Flags.Read) + m.test_enum_to_int(m.ClassWithUnscopedEnum.EMode.EFirstMode) + m.test_enum_to_uint(m.Flags.Read) + m.test_enum_to_uint(m.ClassWithUnscopedEnum.EMode.EFirstMode) + m.test_enum_to_long_long(m.Flags.Read) + m.test_enum_to_long_long(m.ClassWithUnscopedEnum.EMode.EFirstMode) diff --git a/ext/pybind11/tests/test_eval.cpp b/ext/pybind11/tests/test_eval.cpp index ed4c226fe..e09482191 100644 --- a/ext/pybind11/tests/test_eval.cpp +++ b/ext/pybind11/tests/test_eval.cpp @@ -11,7 +11,9 @@ #include <pybind11/eval.h> #include "pybind11_tests.h" -test_initializer eval([](py::module &m) { +TEST_SUBMODULE(eval_, m) { + // test_evals + auto global = py::dict(py::module::import("__main__").attr("__dict__")); m.def("test_eval_statements", [global]() { @@ -20,14 +22,24 @@ test_initializer eval([](py::module &m) { return 42; }); - auto result = py::eval<py::eval_statements>( - "print('Hello World!');\n" - "x = call_test();", + // Regular string literal + py::exec( + "message = 'Hello World!'\n" + "x = call_test()", global, local ); + + // Multi-line raw string literal + py::exec(R"( + if x == 42: + print(message) + else: + raise RuntimeError + )", global, local + ); auto x = local["x"].cast<int>(); - return result == py::none() && x == 42; + return x == 42; }); m.def("test_eval", [global]() { @@ -45,7 +57,7 @@ test_initializer eval([](py::module &m) { auto result = py::eval<py::eval_single_statement>("x = call_test()", py::dict(), local); auto x = local["x"].cast<int>(); - return result == py::none() && x == 42; + return result.is_none() && x == 42; }); m.def("test_eval_file", [global](py::str filename) { @@ -56,7 +68,7 @@ test_initializer eval([](py::module &m) { local["call_test2"] = py::cpp_function([&](int value) { val_out = value; }); auto result = py::eval_file(filename, global, local); - return val_out == 43 && result == py::none(); + return val_out == 43 && result.is_none(); }); m.def("test_eval_failure", []() { @@ -76,4 +88,4 @@ test_initializer eval([](py::module &m) { } return false; }); -}); +} diff --git a/ext/pybind11/tests/test_eval.py b/ext/pybind11/tests/test_eval.py index 8715dbadb..bda4ef6bf 100644 --- a/ext/pybind11/tests/test_eval.py +++ b/ext/pybind11/tests/test_eval.py @@ -1,19 +1,17 @@ import os +from pybind11_tests import eval_ as m def test_evals(capture): - from pybind11_tests import (test_eval_statements, test_eval, test_eval_single_statement, - test_eval_file, test_eval_failure, test_eval_file_failure) - with capture: - assert test_eval_statements() + assert m.test_eval_statements() assert capture == "Hello World!" - assert test_eval() - assert test_eval_single_statement() + assert m.test_eval() + assert m.test_eval_single_statement() filename = os.path.join(os.path.dirname(__file__), "test_eval_call.py") - assert test_eval_file(filename) + assert m.test_eval_file(filename) - assert test_eval_failure() - assert test_eval_file_failure() + assert m.test_eval_failure() + assert m.test_eval_file_failure() diff --git a/ext/pybind11/tests/test_exceptions.cpp b/ext/pybind11/tests/test_exceptions.cpp index 706b500f2..ae28abb48 100644 --- a/ext/pybind11/tests/test_exceptions.cpp +++ b/ext/pybind11/tests/test_exceptions.cpp @@ -58,34 +58,6 @@ class MyException5_1 : public MyException5 { using MyException5::MyException5; }; -void throws1() { - throw MyException("this error should go to a custom type"); -} - -void throws2() { - throw MyException2("this error should go to a standard Python exception"); -} - -void throws3() { - throw MyException3("this error cannot be translated"); -} - -void throws4() { - throw MyException4("this error is rethrown"); -} - -void throws5() { - throw MyException5("this is a helper-defined translated exception"); -} - -void throws5_1() { - throw MyException5_1("MyException5 subclass"); -} - -void throws_logic_error() { - throw std::logic_error("this error should fall through to the standard handler"); -} - struct PythonCallInDestructor { PythonCallInDestructor(const py::dict &d) : d(d) {} ~PythonCallInDestructor() { d["good"] = true; } @@ -93,7 +65,11 @@ struct PythonCallInDestructor { py::dict d; }; -test_initializer custom_exceptions([](py::module &m) { +TEST_SUBMODULE(exceptions, m) { + m.def("throw_std_exception", []() { + throw std::runtime_error("This exception was intentionally thrown."); + }); + // make a new custom exception and use it as a translation target static py::exception<MyException> ex(m, "MyException"); py::register_exception_translator([](std::exception_ptr p) { @@ -133,13 +109,20 @@ test_initializer custom_exceptions([](py::module &m) { // A slightly more complicated one that declares MyException5_1 as a subclass of MyException5 py::register_exception<MyException5_1>(m, "MyException5_1", ex5.ptr()); - m.def("throws1", &throws1); - m.def("throws2", &throws2); - m.def("throws3", &throws3); - m.def("throws4", &throws4); - m.def("throws5", &throws5); - m.def("throws5_1", &throws5_1); - m.def("throws_logic_error", &throws_logic_error); + m.def("throws1", []() { throw MyException("this error should go to a custom type"); }); + m.def("throws2", []() { throw MyException2("this error should go to a standard Python exception"); }); + m.def("throws3", []() { throw MyException3("this error cannot be translated"); }); + m.def("throws4", []() { throw MyException4("this error is rethrown"); }); + m.def("throws5", []() { throw MyException5("this is a helper-defined translated exception"); }); + m.def("throws5_1", []() { throw MyException5_1("MyException5 subclass"); }); + m.def("throws_logic_error", []() { throw std::logic_error("this error should fall through to the standard handler"); }); + m.def("exception_matches", []() { + py::dict foo; + try { foo["bar"]; } + catch (py::error_already_set& ex) { + if (!ex.matches(PyExc_KeyError)) throw; + } + }); m.def("throw_already_set", [](bool err) { if (err) @@ -170,4 +153,16 @@ test_initializer custom_exceptions([](py::module &m) { } return false; }); -}); + + // test_nested_throws + m.def("try_catch", [m](py::object exc_type, py::function f, py::args args) { + try { f(*args); } + catch (py::error_already_set &ex) { + if (ex.matches(exc_type)) + py::print(ex.what()); + else + throw; + } + }); + +} diff --git a/ext/pybind11/tests/test_exceptions.py b/ext/pybind11/tests/test_exceptions.py index 0025e4eb6..8d37c09b8 100644 --- a/ext/pybind11/tests/test_exceptions.py +++ b/ext/pybind11/tests/test_exceptions.py @@ -1,74 +1,144 @@ import pytest +from pybind11_tests import exceptions as m +import pybind11_cross_module_tests as cm -def test_error_already_set(msg): - from pybind11_tests import throw_already_set +def test_std_exception(msg): with pytest.raises(RuntimeError) as excinfo: - throw_already_set(False) + m.throw_std_exception() + assert msg(excinfo.value) == "This exception was intentionally thrown." + + +def test_error_already_set(msg): + with pytest.raises(RuntimeError) as excinfo: + m.throw_already_set(False) assert msg(excinfo.value) == "Unknown internal error occurred" with pytest.raises(ValueError) as excinfo: - throw_already_set(True) + m.throw_already_set(True) assert msg(excinfo.value) == "foo" -def test_python_call_in_catch(): - from pybind11_tests import python_call_in_destructor +def test_cross_module_exceptions(): + with pytest.raises(RuntimeError) as excinfo: + cm.raise_runtime_error() + assert str(excinfo.value) == "My runtime error" + + with pytest.raises(ValueError) as excinfo: + cm.raise_value_error() + assert str(excinfo.value) == "My value error" + + with pytest.raises(ValueError) as excinfo: + cm.throw_pybind_value_error() + assert str(excinfo.value) == "pybind11 value error" + + with pytest.raises(TypeError) as excinfo: + cm.throw_pybind_type_error() + assert str(excinfo.value) == "pybind11 type error" + + with pytest.raises(StopIteration) as excinfo: + cm.throw_stop_iteration() + +def test_python_call_in_catch(): d = {} - assert python_call_in_destructor(d) is True + assert m.python_call_in_destructor(d) is True assert d["good"] is True -def test_custom(msg): - from pybind11_tests import (MyException, MyException5, MyException5_1, - throws1, throws2, throws3, throws4, throws5, throws5_1, - throws_logic_error) +def test_exception_matches(): + m.exception_matches() - # Can we catch a MyException?" - with pytest.raises(MyException) as excinfo: - throws1() + +def test_custom(msg): + # Can we catch a MyException? + with pytest.raises(m.MyException) as excinfo: + m.throws1() assert msg(excinfo.value) == "this error should go to a custom type" # Can we translate to standard Python exceptions? with pytest.raises(RuntimeError) as excinfo: - throws2() + m.throws2() assert msg(excinfo.value) == "this error should go to a standard Python exception" # Can we handle unknown exceptions? with pytest.raises(RuntimeError) as excinfo: - throws3() + m.throws3() assert msg(excinfo.value) == "Caught an unknown exception!" # Can we delegate to another handler by rethrowing? - with pytest.raises(MyException) as excinfo: - throws4() + with pytest.raises(m.MyException) as excinfo: + m.throws4() assert msg(excinfo.value) == "this error is rethrown" - # "Can we fall-through to the default handler?" + # Can we fall-through to the default handler? with pytest.raises(RuntimeError) as excinfo: - throws_logic_error() + m.throws_logic_error() assert msg(excinfo.value) == "this error should fall through to the standard handler" # Can we handle a helper-declared exception? - with pytest.raises(MyException5) as excinfo: - throws5() + with pytest.raises(m.MyException5) as excinfo: + m.throws5() assert msg(excinfo.value) == "this is a helper-defined translated exception" # Exception subclassing: - with pytest.raises(MyException5) as excinfo: - throws5_1() + with pytest.raises(m.MyException5) as excinfo: + m.throws5_1() assert msg(excinfo.value) == "MyException5 subclass" - assert isinstance(excinfo.value, MyException5_1) + assert isinstance(excinfo.value, m.MyException5_1) - with pytest.raises(MyException5_1) as excinfo: - throws5_1() + with pytest.raises(m.MyException5_1) as excinfo: + m.throws5_1() assert msg(excinfo.value) == "MyException5 subclass" - with pytest.raises(MyException5) as excinfo: + with pytest.raises(m.MyException5) as excinfo: try: - throws5() - except MyException5_1: + m.throws5() + except m.MyException5_1: raise RuntimeError("Exception error: caught child from parent") assert msg(excinfo.value) == "this is a helper-defined translated exception" + + +def test_nested_throws(capture): + """Tests nested (e.g. C++ -> Python -> C++) exception handling""" + + def throw_myex(): + raise m.MyException("nested error") + + def throw_myex5(): + raise m.MyException5("nested error 5") + + # In the comments below, the exception is caught in the first step, thrown in the last step + + # C++ -> Python + with capture: + m.try_catch(m.MyException5, throw_myex5) + assert str(capture).startswith("MyException5: nested error 5") + + # Python -> C++ -> Python + with pytest.raises(m.MyException) as excinfo: + m.try_catch(m.MyException5, throw_myex) + assert str(excinfo.value) == "nested error" + + def pycatch(exctype, f, *args): + try: + f(*args) + except m.MyException as e: + print(e) + + # C++ -> Python -> C++ -> Python + with capture: + m.try_catch( + m.MyException5, pycatch, m.MyException, m.try_catch, m.MyException, throw_myex5) + assert str(capture).startswith("MyException5: nested error 5") + + # C++ -> Python -> C++ + with capture: + m.try_catch(m.MyException, pycatch, m.MyException5, m.throws4) + assert capture == "this error is rethrown" + + # Python -> C++ -> Python -> C++ + with pytest.raises(m.MyException5) as excinfo: + m.try_catch(m.MyException, pycatch, m.MyException, m.throws5) + assert str(excinfo.value) == "this is a helper-defined translated exception" diff --git a/ext/pybind11/tests/test_factory_constructors.cpp b/ext/pybind11/tests/test_factory_constructors.cpp new file mode 100644 index 000000000..fb33377b2 --- /dev/null +++ b/ext/pybind11/tests/test_factory_constructors.cpp @@ -0,0 +1,337 @@ +/* + tests/test_factory_constructors.cpp -- tests construction from a factory function + via py::init_factory() + + Copyright (c) 2017 Jason Rhinelander <jason@imaginary.ca> + + All rights reserved. Use of this source code is governed by a + BSD-style license that can be found in the LICENSE file. +*/ + +#include "pybind11_tests.h" +#include "constructor_stats.h" +#include <cmath> + +// Classes for testing python construction via C++ factory function: +// Not publically constructible, copyable, or movable: +class TestFactory1 { + friend class TestFactoryHelper; + TestFactory1() : value("(empty)") { print_default_created(this); } + TestFactory1(int v) : value(std::to_string(v)) { print_created(this, value); } + TestFactory1(std::string v) : value(std::move(v)) { print_created(this, value); } + TestFactory1(TestFactory1 &&) = delete; + TestFactory1(const TestFactory1 &) = delete; + TestFactory1 &operator=(TestFactory1 &&) = delete; + TestFactory1 &operator=(const TestFactory1 &) = delete; +public: + std::string value; + ~TestFactory1() { print_destroyed(this); } +}; +// Non-public construction, but moveable: +class TestFactory2 { + friend class TestFactoryHelper; + TestFactory2() : value("(empty2)") { print_default_created(this); } + TestFactory2(int v) : value(std::to_string(v)) { print_created(this, value); } + TestFactory2(std::string v) : value(std::move(v)) { print_created(this, value); } +public: + TestFactory2(TestFactory2 &&m) { value = std::move(m.value); print_move_created(this); } + TestFactory2 &operator=(TestFactory2 &&m) { value = std::move(m.value); print_move_assigned(this); return *this; } + std::string value; + ~TestFactory2() { print_destroyed(this); } +}; +// Mixed direct/factory construction: +class TestFactory3 { +protected: + friend class TestFactoryHelper; + TestFactory3() : value("(empty3)") { print_default_created(this); } + TestFactory3(int v) : value(std::to_string(v)) { print_created(this, value); } +public: + TestFactory3(std::string v) : value(std::move(v)) { print_created(this, value); } + TestFactory3(TestFactory3 &&m) { value = std::move(m.value); print_move_created(this); } + TestFactory3 &operator=(TestFactory3 &&m) { value = std::move(m.value); print_move_assigned(this); return *this; } + std::string value; + virtual ~TestFactory3() { print_destroyed(this); } +}; +// Inheritance test +class TestFactory4 : public TestFactory3 { +public: + TestFactory4() : TestFactory3() { print_default_created(this); } + TestFactory4(int v) : TestFactory3(v) { print_created(this, v); } + virtual ~TestFactory4() { print_destroyed(this); } +}; +// Another class for an invalid downcast test +class TestFactory5 : public TestFactory3 { +public: + TestFactory5(int i) : TestFactory3(i) { print_created(this, i); } + virtual ~TestFactory5() { print_destroyed(this); } +}; + +class TestFactory6 { +protected: + int value; + bool alias = false; +public: + TestFactory6(int i) : value{i} { print_created(this, i); } + TestFactory6(TestFactory6 &&f) { print_move_created(this); value = f.value; alias = f.alias; } + TestFactory6(const TestFactory6 &f) { print_copy_created(this); value = f.value; alias = f.alias; } + virtual ~TestFactory6() { print_destroyed(this); } + virtual int get() { return value; } + bool has_alias() { return alias; } +}; +class PyTF6 : public TestFactory6 { +public: + // Special constructor that allows the factory to construct a PyTF6 from a TestFactory6 only + // when an alias is needed: + PyTF6(TestFactory6 &&base) : TestFactory6(std::move(base)) { alias = true; print_created(this, "move", value); } + PyTF6(int i) : TestFactory6(i) { alias = true; print_created(this, i); } + PyTF6(PyTF6 &&f) : TestFactory6(std::move(f)) { print_move_created(this); } + PyTF6(const PyTF6 &f) : TestFactory6(f) { print_copy_created(this); } + PyTF6(std::string s) : TestFactory6((int) s.size()) { alias = true; print_created(this, s); } + virtual ~PyTF6() { print_destroyed(this); } + int get() override { PYBIND11_OVERLOAD(int, TestFactory6, get, /*no args*/); } +}; + +class TestFactory7 { +protected: + int value; + bool alias = false; +public: + TestFactory7(int i) : value{i} { print_created(this, i); } + TestFactory7(TestFactory7 &&f) { print_move_created(this); value = f.value; alias = f.alias; } + TestFactory7(const TestFactory7 &f) { print_copy_created(this); value = f.value; alias = f.alias; } + virtual ~TestFactory7() { print_destroyed(this); } + virtual int get() { return value; } + bool has_alias() { return alias; } +}; +class PyTF7 : public TestFactory7 { +public: + PyTF7(int i) : TestFactory7(i) { alias = true; print_created(this, i); } + PyTF7(PyTF7 &&f) : TestFactory7(std::move(f)) { print_move_created(this); } + PyTF7(const PyTF7 &f) : TestFactory7(f) { print_copy_created(this); } + virtual ~PyTF7() { print_destroyed(this); } + int get() override { PYBIND11_OVERLOAD(int, TestFactory7, get, /*no args*/); } +}; + + +class TestFactoryHelper { +public: + // Non-movable, non-copyable type: + // Return via pointer: + static TestFactory1 *construct1() { return new TestFactory1(); } + // Holder: + static std::unique_ptr<TestFactory1> construct1(int a) { return std::unique_ptr<TestFactory1>(new TestFactory1(a)); } + // pointer again + static TestFactory1 *construct1_string(std::string a) { return new TestFactory1(a); } + + // Moveable type: + // pointer: + static TestFactory2 *construct2() { return new TestFactory2(); } + // holder: + static std::unique_ptr<TestFactory2> construct2(int a) { return std::unique_ptr<TestFactory2>(new TestFactory2(a)); } + // by value moving: + static TestFactory2 construct2(std::string a) { return TestFactory2(a); } + + // shared_ptr holder type: + // pointer: + static TestFactory3 *construct3() { return new TestFactory3(); } + // holder: + static std::shared_ptr<TestFactory3> construct3(int a) { return std::shared_ptr<TestFactory3>(new TestFactory3(a)); } +}; + +TEST_SUBMODULE(factory_constructors, m) { + + // Define various trivial types to allow simpler overload resolution: + py::module m_tag = m.def_submodule("tag"); +#define MAKE_TAG_TYPE(Name) \ + struct Name##_tag {}; \ + py::class_<Name##_tag>(m_tag, #Name "_tag").def(py::init<>()); \ + m_tag.attr(#Name) = py::cast(Name##_tag{}) + MAKE_TAG_TYPE(pointer); + MAKE_TAG_TYPE(unique_ptr); + MAKE_TAG_TYPE(move); + MAKE_TAG_TYPE(shared_ptr); + MAKE_TAG_TYPE(derived); + MAKE_TAG_TYPE(TF4); + MAKE_TAG_TYPE(TF5); + MAKE_TAG_TYPE(null_ptr); + MAKE_TAG_TYPE(base); + MAKE_TAG_TYPE(invalid_base); + MAKE_TAG_TYPE(alias); + MAKE_TAG_TYPE(unaliasable); + MAKE_TAG_TYPE(mixed); + + // test_init_factory_basic, test_bad_type + py::class_<TestFactory1>(m, "TestFactory1") + .def(py::init([](unique_ptr_tag, int v) { return TestFactoryHelper::construct1(v); })) + .def(py::init(&TestFactoryHelper::construct1_string)) // raw function pointer + .def(py::init([](pointer_tag) { return TestFactoryHelper::construct1(); })) + .def(py::init([](py::handle, int v, py::handle) { return TestFactoryHelper::construct1(v); })) + .def_readwrite("value", &TestFactory1::value) + ; + py::class_<TestFactory2>(m, "TestFactory2") + .def(py::init([](pointer_tag, int v) { return TestFactoryHelper::construct2(v); })) + .def(py::init([](unique_ptr_tag, std::string v) { return TestFactoryHelper::construct2(v); })) + .def(py::init([](move_tag) { return TestFactoryHelper::construct2(); })) + .def_readwrite("value", &TestFactory2::value) + ; + + // Stateful & reused: + int c = 1; + auto c4a = [c](pointer_tag, TF4_tag, int a) { (void) c; return new TestFactory4(a);}; + + // test_init_factory_basic, test_init_factory_casting + py::class_<TestFactory3, std::shared_ptr<TestFactory3>>(m, "TestFactory3") + .def(py::init([](pointer_tag, int v) { return TestFactoryHelper::construct3(v); })) + .def(py::init([](shared_ptr_tag) { return TestFactoryHelper::construct3(); })) + .def("__init__", [](TestFactory3 &self, std::string v) { new (&self) TestFactory3(v); }) // placement-new ctor + + // factories returning a derived type: + .def(py::init(c4a)) // derived ptr + .def(py::init([](pointer_tag, TF5_tag, int a) { return new TestFactory5(a); })) + // derived shared ptr: + .def(py::init([](shared_ptr_tag, TF4_tag, int a) { return std::make_shared<TestFactory4>(a); })) + .def(py::init([](shared_ptr_tag, TF5_tag, int a) { return std::make_shared<TestFactory5>(a); })) + + // Returns nullptr: + .def(py::init([](null_ptr_tag) { return (TestFactory3 *) nullptr; })) + + .def_readwrite("value", &TestFactory3::value) + ; + + // test_init_factory_casting + py::class_<TestFactory4, TestFactory3, std::shared_ptr<TestFactory4>>(m, "TestFactory4") + .def(py::init(c4a)) // pointer + ; + + // Doesn't need to be registered, but registering makes getting ConstructorStats easier: + py::class_<TestFactory5, TestFactory3, std::shared_ptr<TestFactory5>>(m, "TestFactory5"); + + // test_init_factory_alias + // Alias testing + py::class_<TestFactory6, PyTF6>(m, "TestFactory6") + .def(py::init([](base_tag, int i) { return TestFactory6(i); })) + .def(py::init([](alias_tag, int i) { return PyTF6(i); })) + .def(py::init([](alias_tag, std::string s) { return PyTF6(s); })) + .def(py::init([](alias_tag, pointer_tag, int i) { return new PyTF6(i); })) + .def(py::init([](base_tag, pointer_tag, int i) { return new TestFactory6(i); })) + .def(py::init([](base_tag, alias_tag, pointer_tag, int i) { return (TestFactory6 *) new PyTF6(i); })) + + .def("get", &TestFactory6::get) + .def("has_alias", &TestFactory6::has_alias) + + .def_static("get_cstats", &ConstructorStats::get<TestFactory6>, py::return_value_policy::reference) + .def_static("get_alias_cstats", &ConstructorStats::get<PyTF6>, py::return_value_policy::reference) + ; + + // test_init_factory_dual + // Separate alias constructor testing + py::class_<TestFactory7, PyTF7, std::shared_ptr<TestFactory7>>(m, "TestFactory7") + .def(py::init( + [](int i) { return TestFactory7(i); }, + [](int i) { return PyTF7(i); })) + .def(py::init( + [](pointer_tag, int i) { return new TestFactory7(i); }, + [](pointer_tag, int i) { return new PyTF7(i); })) + .def(py::init( + [](mixed_tag, int i) { return new TestFactory7(i); }, + [](mixed_tag, int i) { return PyTF7(i); })) + .def(py::init( + [](mixed_tag, std::string s) { return TestFactory7((int) s.size()); }, + [](mixed_tag, std::string s) { return new PyTF7((int) s.size()); })) + .def(py::init( + [](base_tag, pointer_tag, int i) { return new TestFactory7(i); }, + [](base_tag, pointer_tag, int i) { return (TestFactory7 *) new PyTF7(i); })) + .def(py::init( + [](alias_tag, pointer_tag, int i) { return new PyTF7(i); }, + [](alias_tag, pointer_tag, int i) { return new PyTF7(10*i); })) + .def(py::init( + [](shared_ptr_tag, base_tag, int i) { return std::make_shared<TestFactory7>(i); }, + [](shared_ptr_tag, base_tag, int i) { auto *p = new PyTF7(i); return std::shared_ptr<TestFactory7>(p); })) + .def(py::init( + [](shared_ptr_tag, invalid_base_tag, int i) { return std::make_shared<TestFactory7>(i); }, + [](shared_ptr_tag, invalid_base_tag, int i) { return std::make_shared<TestFactory7>(i); })) // <-- invalid alias factory + + .def("get", &TestFactory7::get) + .def("has_alias", &TestFactory7::has_alias) + + .def_static("get_cstats", &ConstructorStats::get<TestFactory7>, py::return_value_policy::reference) + .def_static("get_alias_cstats", &ConstructorStats::get<PyTF7>, py::return_value_policy::reference) + ; + + // test_placement_new_alternative + // Class with a custom new operator but *without* a placement new operator (issue #948) + class NoPlacementNew { + public: + NoPlacementNew(int i) : i(i) { } + static void *operator new(std::size_t s) { + auto *p = ::operator new(s); + py::print("operator new called, returning", reinterpret_cast<uintptr_t>(p)); + return p; + } + static void operator delete(void *p) { + py::print("operator delete called on", reinterpret_cast<uintptr_t>(p)); + ::operator delete(p); + } + int i; + }; + // As of 2.2, `py::init<args>` no longer requires placement new + py::class_<NoPlacementNew>(m, "NoPlacementNew") + .def(py::init<int>()) + .def(py::init([]() { return new NoPlacementNew(100); })) + .def_readwrite("i", &NoPlacementNew::i) + ; + + + // test_reallocations + // Class that has verbose operator_new/operator_delete calls + struct NoisyAlloc { + NoisyAlloc(int i) { py::print(py::str("NoisyAlloc(int {})").format(i)); } + NoisyAlloc(double d) { py::print(py::str("NoisyAlloc(double {})").format(d)); } + ~NoisyAlloc() { py::print("~NoisyAlloc()"); } + + static void *operator new(size_t s) { py::print("noisy new"); return ::operator new(s); } + static void *operator new(size_t, void *p) { py::print("noisy placement new"); return p; } + static void operator delete(void *p, size_t) { py::print("noisy delete"); ::operator delete(p); } + static void operator delete(void *, void *) { py::print("noisy placement delete"); } +#if defined(_MSC_VER) && _MSC_VER < 1910 + // MSVC 2015 bug: the above "noisy delete" isn't invoked (fixed in MSVC 2017) + static void operator delete(void *p) { py::print("noisy delete"); ::operator delete(p); } +#endif + }; + py::class_<NoisyAlloc>(m, "NoisyAlloc") + // Since these overloads have the same number of arguments, the dispatcher will try each of + // them until the arguments convert. Thus we can get a pre-allocation here when passing a + // single non-integer: + .def("__init__", [](NoisyAlloc *a, int i) { new (a) NoisyAlloc(i); }) // Regular constructor, runs first, requires preallocation + .def(py::init([](double d) { return new NoisyAlloc(d); })) + + // The two-argument version: first the factory pointer overload. + .def(py::init([](int i, int) { return new NoisyAlloc(i); })) + // Return-by-value: + .def(py::init([](double d, int) { return NoisyAlloc(d); })) + // Old-style placement new init; requires preallocation + .def("__init__", [](NoisyAlloc &a, double d, double) { new (&a) NoisyAlloc(d); }) + // Requires deallocation of previous overload preallocated value: + .def(py::init([](int i, double) { return new NoisyAlloc(i); })) + // Regular again: requires yet another preallocation + .def("__init__", [](NoisyAlloc &a, int i, std::string) { new (&a) NoisyAlloc(i); }) + ; + + + + + // static_assert testing (the following def's should all fail with appropriate compilation errors): +#if 0 + struct BadF1Base {}; + struct BadF1 : BadF1Base {}; + struct PyBadF1 : BadF1 {}; + py::class_<BadF1, PyBadF1, std::shared_ptr<BadF1>> bf1(m, "BadF1"); + // wrapped factory function must return a compatible pointer, holder, or value + bf1.def(py::init([]() { return 3; })); + // incompatible factory function pointer return type + bf1.def(py::init([]() { static int three = 3; return &three; })); + // incompatible factory function std::shared_ptr<T> return type: cannot convert shared_ptr<T> to holder + // (non-polymorphic base) + bf1.def(py::init([]() { return std::shared_ptr<BadF1Base>(new BadF1()); })); +#endif +} diff --git a/ext/pybind11/tests/test_factory_constructors.py b/ext/pybind11/tests/test_factory_constructors.py new file mode 100644 index 000000000..78a3910ad --- /dev/null +++ b/ext/pybind11/tests/test_factory_constructors.py @@ -0,0 +1,459 @@ +import pytest +import re + +from pybind11_tests import factory_constructors as m +from pybind11_tests.factory_constructors import tag +from pybind11_tests import ConstructorStats + + +def test_init_factory_basic(): + """Tests py::init_factory() wrapper around various ways of returning the object""" + + cstats = [ConstructorStats.get(c) for c in [m.TestFactory1, m.TestFactory2, m.TestFactory3]] + cstats[0].alive() # force gc + n_inst = ConstructorStats.detail_reg_inst() + + x1 = m.TestFactory1(tag.unique_ptr, 3) + assert x1.value == "3" + y1 = m.TestFactory1(tag.pointer) + assert y1.value == "(empty)" + z1 = m.TestFactory1("hi!") + assert z1.value == "hi!" + + assert ConstructorStats.detail_reg_inst() == n_inst + 3 + + x2 = m.TestFactory2(tag.move) + assert x2.value == "(empty2)" + y2 = m.TestFactory2(tag.pointer, 7) + assert y2.value == "7" + z2 = m.TestFactory2(tag.unique_ptr, "hi again") + assert z2.value == "hi again" + + assert ConstructorStats.detail_reg_inst() == n_inst + 6 + + x3 = m.TestFactory3(tag.shared_ptr) + assert x3.value == "(empty3)" + y3 = m.TestFactory3(tag.pointer, 42) + assert y3.value == "42" + z3 = m.TestFactory3("bye") + assert z3.value == "bye" + + with pytest.raises(TypeError) as excinfo: + m.TestFactory3(tag.null_ptr) + assert str(excinfo.value) == "pybind11::init(): factory function returned nullptr" + + assert [i.alive() for i in cstats] == [3, 3, 3] + assert ConstructorStats.detail_reg_inst() == n_inst + 9 + + del x1, y2, y3, z3 + assert [i.alive() for i in cstats] == [2, 2, 1] + assert ConstructorStats.detail_reg_inst() == n_inst + 5 + del x2, x3, y1, z1, z2 + assert [i.alive() for i in cstats] == [0, 0, 0] + assert ConstructorStats.detail_reg_inst() == n_inst + + assert [i.values() for i in cstats] == [ + ["3", "hi!"], + ["7", "hi again"], + ["42", "bye"] + ] + assert [i.default_constructions for i in cstats] == [1, 1, 1] + + +def test_init_factory_signature(msg): + with pytest.raises(TypeError) as excinfo: + m.TestFactory1("invalid", "constructor", "arguments") + assert msg(excinfo.value) == """ + __init__(): incompatible constructor arguments. The following argument types are supported: + 1. m.factory_constructors.TestFactory1(arg0: m.factory_constructors.tag.unique_ptr_tag, arg1: int) + 2. m.factory_constructors.TestFactory1(arg0: str) + 3. m.factory_constructors.TestFactory1(arg0: m.factory_constructors.tag.pointer_tag) + 4. m.factory_constructors.TestFactory1(arg0: handle, arg1: int, arg2: handle) + + Invoked with: 'invalid', 'constructor', 'arguments' + """ # noqa: E501 line too long + + assert msg(m.TestFactory1.__init__.__doc__) == """ + __init__(*args, **kwargs) + Overloaded function. + + 1. __init__(self: m.factory_constructors.TestFactory1, arg0: m.factory_constructors.tag.unique_ptr_tag, arg1: int) -> None + + 2. __init__(self: m.factory_constructors.TestFactory1, arg0: str) -> None + + 3. __init__(self: m.factory_constructors.TestFactory1, arg0: m.factory_constructors.tag.pointer_tag) -> None + + 4. __init__(self: m.factory_constructors.TestFactory1, arg0: handle, arg1: int, arg2: handle) -> None + """ # noqa: E501 line too long + + +def test_init_factory_casting(): + """Tests py::init_factory() wrapper with various upcasting and downcasting returns""" + + cstats = [ConstructorStats.get(c) for c in [m.TestFactory3, m.TestFactory4, m.TestFactory5]] + cstats[0].alive() # force gc + n_inst = ConstructorStats.detail_reg_inst() + + # Construction from derived references: + a = m.TestFactory3(tag.pointer, tag.TF4, 4) + assert a.value == "4" + b = m.TestFactory3(tag.shared_ptr, tag.TF4, 5) + assert b.value == "5" + c = m.TestFactory3(tag.pointer, tag.TF5, 6) + assert c.value == "6" + d = m.TestFactory3(tag.shared_ptr, tag.TF5, 7) + assert d.value == "7" + + assert ConstructorStats.detail_reg_inst() == n_inst + 4 + + # Shared a lambda with TF3: + e = m.TestFactory4(tag.pointer, tag.TF4, 8) + assert e.value == "8" + + assert ConstructorStats.detail_reg_inst() == n_inst + 5 + assert [i.alive() for i in cstats] == [5, 3, 2] + + del a + assert [i.alive() for i in cstats] == [4, 2, 2] + assert ConstructorStats.detail_reg_inst() == n_inst + 4 + + del b, c, e + assert [i.alive() for i in cstats] == [1, 0, 1] + assert ConstructorStats.detail_reg_inst() == n_inst + 1 + + del d + assert [i.alive() for i in cstats] == [0, 0, 0] + assert ConstructorStats.detail_reg_inst() == n_inst + + assert [i.values() for i in cstats] == [ + ["4", "5", "6", "7", "8"], + ["4", "5", "8"], + ["6", "7"] + ] + + +def test_init_factory_alias(): + """Tests py::init_factory() wrapper with value conversions and alias types""" + + cstats = [m.TestFactory6.get_cstats(), m.TestFactory6.get_alias_cstats()] + cstats[0].alive() # force gc + n_inst = ConstructorStats.detail_reg_inst() + + a = m.TestFactory6(tag.base, 1) + assert a.get() == 1 + assert not a.has_alias() + b = m.TestFactory6(tag.alias, "hi there") + assert b.get() == 8 + assert b.has_alias() + c = m.TestFactory6(tag.alias, 3) + assert c.get() == 3 + assert c.has_alias() + d = m.TestFactory6(tag.alias, tag.pointer, 4) + assert d.get() == 4 + assert d.has_alias() + e = m.TestFactory6(tag.base, tag.pointer, 5) + assert e.get() == 5 + assert not e.has_alias() + f = m.TestFactory6(tag.base, tag.alias, tag.pointer, 6) + assert f.get() == 6 + assert f.has_alias() + + assert ConstructorStats.detail_reg_inst() == n_inst + 6 + assert [i.alive() for i in cstats] == [6, 4] + + del a, b, e + assert [i.alive() for i in cstats] == [3, 3] + assert ConstructorStats.detail_reg_inst() == n_inst + 3 + del f, c, d + assert [i.alive() for i in cstats] == [0, 0] + assert ConstructorStats.detail_reg_inst() == n_inst + + class MyTest(m.TestFactory6): + def __init__(self, *args): + m.TestFactory6.__init__(self, *args) + + def get(self): + return -5 + m.TestFactory6.get(self) + + # Return Class by value, moved into new alias: + z = MyTest(tag.base, 123) + assert z.get() == 118 + assert z.has_alias() + + # Return alias by value, moved into new alias: + y = MyTest(tag.alias, "why hello!") + assert y.get() == 5 + assert y.has_alias() + + # Return Class by pointer, moved into new alias then original destroyed: + x = MyTest(tag.base, tag.pointer, 47) + assert x.get() == 42 + assert x.has_alias() + + assert ConstructorStats.detail_reg_inst() == n_inst + 3 + assert [i.alive() for i in cstats] == [3, 3] + del x, y, z + assert [i.alive() for i in cstats] == [0, 0] + assert ConstructorStats.detail_reg_inst() == n_inst + + assert [i.values() for i in cstats] == [ + ["1", "8", "3", "4", "5", "6", "123", "10", "47"], + ["hi there", "3", "4", "6", "move", "123", "why hello!", "move", "47"] + ] + + +def test_init_factory_dual(): + """Tests init factory functions with dual main/alias factory functions""" + from pybind11_tests.factory_constructors import TestFactory7 + + cstats = [TestFactory7.get_cstats(), TestFactory7.get_alias_cstats()] + cstats[0].alive() # force gc + n_inst = ConstructorStats.detail_reg_inst() + + class PythFactory7(TestFactory7): + def get(self): + return 100 + TestFactory7.get(self) + + a1 = TestFactory7(1) + a2 = PythFactory7(2) + assert a1.get() == 1 + assert a2.get() == 102 + assert not a1.has_alias() + assert a2.has_alias() + + b1 = TestFactory7(tag.pointer, 3) + b2 = PythFactory7(tag.pointer, 4) + assert b1.get() == 3 + assert b2.get() == 104 + assert not b1.has_alias() + assert b2.has_alias() + + c1 = TestFactory7(tag.mixed, 5) + c2 = PythFactory7(tag.mixed, 6) + assert c1.get() == 5 + assert c2.get() == 106 + assert not c1.has_alias() + assert c2.has_alias() + + d1 = TestFactory7(tag.base, tag.pointer, 7) + d2 = PythFactory7(tag.base, tag.pointer, 8) + assert d1.get() == 7 + assert d2.get() == 108 + assert not d1.has_alias() + assert d2.has_alias() + + # Both return an alias; the second multiplies the value by 10: + e1 = TestFactory7(tag.alias, tag.pointer, 9) + e2 = PythFactory7(tag.alias, tag.pointer, 10) + assert e1.get() == 9 + assert e2.get() == 200 + assert e1.has_alias() + assert e2.has_alias() + + f1 = TestFactory7(tag.shared_ptr, tag.base, 11) + f2 = PythFactory7(tag.shared_ptr, tag.base, 12) + assert f1.get() == 11 + assert f2.get() == 112 + assert not f1.has_alias() + assert f2.has_alias() + + g1 = TestFactory7(tag.shared_ptr, tag.invalid_base, 13) + assert g1.get() == 13 + assert not g1.has_alias() + with pytest.raises(TypeError) as excinfo: + PythFactory7(tag.shared_ptr, tag.invalid_base, 14) + assert (str(excinfo.value) == + "pybind11::init(): construction failed: returned holder-wrapped instance is not an " + "alias instance") + + assert [i.alive() for i in cstats] == [13, 7] + assert ConstructorStats.detail_reg_inst() == n_inst + 13 + + del a1, a2, b1, d1, e1, e2 + assert [i.alive() for i in cstats] == [7, 4] + assert ConstructorStats.detail_reg_inst() == n_inst + 7 + del b2, c1, c2, d2, f1, f2, g1 + assert [i.alive() for i in cstats] == [0, 0] + assert ConstructorStats.detail_reg_inst() == n_inst + + assert [i.values() for i in cstats] == [ + ["1", "2", "3", "4", "5", "6", "7", "8", "9", "100", "11", "12", "13", "14"], + ["2", "4", "6", "8", "9", "100", "12"] + ] + + +def test_no_placement_new(capture): + """Prior to 2.2, `py::init<...>` relied on the type supporting placement + new; this tests a class without placement new support.""" + with capture: + a = m.NoPlacementNew(123) + + found = re.search(r'^operator new called, returning (\d+)\n$', str(capture)) + assert found + assert a.i == 123 + with capture: + del a + pytest.gc_collect() + assert capture == "operator delete called on " + found.group(1) + + with capture: + b = m.NoPlacementNew() + + found = re.search(r'^operator new called, returning (\d+)\n$', str(capture)) + assert found + assert b.i == 100 + with capture: + del b + pytest.gc_collect() + assert capture == "operator delete called on " + found.group(1) + + +def test_multiple_inheritance(): + class MITest(m.TestFactory1, m.TestFactory2): + def __init__(self): + m.TestFactory1.__init__(self, tag.unique_ptr, 33) + m.TestFactory2.__init__(self, tag.move) + + a = MITest() + assert m.TestFactory1.value.fget(a) == "33" + assert m.TestFactory2.value.fget(a) == "(empty2)" + + +def create_and_destroy(*args): + a = m.NoisyAlloc(*args) + print("---") + del a + pytest.gc_collect() + + +def strip_comments(s): + return re.sub(r'\s+#.*', '', s) + + +def test_reallocations(capture, msg): + """When the constructor is overloaded, previous overloads can require a preallocated value. + This test makes sure that such preallocated values only happen when they might be necessary, + and that they are deallocated properly""" + + pytest.gc_collect() + + with capture: + create_and_destroy(1) + assert msg(capture) == """ + noisy new + noisy placement new + NoisyAlloc(int 1) + --- + ~NoisyAlloc() + noisy delete + """ + with capture: + create_and_destroy(1.5) + assert msg(capture) == strip_comments(""" + noisy new # allocation required to attempt first overload + noisy delete # have to dealloc before considering factory init overload + noisy new # pointer factory calling "new", part 1: allocation + NoisyAlloc(double 1.5) # ... part two, invoking constructor + --- + ~NoisyAlloc() # Destructor + noisy delete # operator delete + """) + + with capture: + create_and_destroy(2, 3) + assert msg(capture) == strip_comments(""" + noisy new # pointer factory calling "new", allocation + NoisyAlloc(int 2) # constructor + --- + ~NoisyAlloc() # Destructor + noisy delete # operator delete + """) + + with capture: + create_and_destroy(2.5, 3) + assert msg(capture) == strip_comments(""" + NoisyAlloc(double 2.5) # construction (local func variable: operator_new not called) + noisy new # return-by-value "new" part 1: allocation + ~NoisyAlloc() # moved-away local func variable destruction + --- + ~NoisyAlloc() # Destructor + noisy delete # operator delete + """) + + with capture: + create_and_destroy(3.5, 4.5) + assert msg(capture) == strip_comments(""" + noisy new # preallocation needed before invoking placement-new overload + noisy placement new # Placement new + NoisyAlloc(double 3.5) # construction + --- + ~NoisyAlloc() # Destructor + noisy delete # operator delete + """) + + with capture: + create_and_destroy(4, 0.5) + assert msg(capture) == strip_comments(""" + noisy new # preallocation needed before invoking placement-new overload + noisy delete # deallocation of preallocated storage + noisy new # Factory pointer allocation + NoisyAlloc(int 4) # factory pointer construction + --- + ~NoisyAlloc() # Destructor + noisy delete # operator delete + """) + + with capture: + create_and_destroy(5, "hi") + assert msg(capture) == strip_comments(""" + noisy new # preallocation needed before invoking first placement new + noisy delete # delete before considering new-style constructor + noisy new # preallocation for second placement new + noisy placement new # Placement new in the second placement new overload + NoisyAlloc(int 5) # construction + --- + ~NoisyAlloc() # Destructor + noisy delete # operator delete + """) + + +@pytest.unsupported_on_py2 +def test_invalid_self(): + """Tests invocation of the pybind-registered base class with an invalid `self` argument. You + can only actually do this on Python 3: Python 2 raises an exception itself if you try.""" + class NotPybindDerived(object): + pass + + # Attempts to initialize with an invalid type passed as `self`: + class BrokenTF1(m.TestFactory1): + def __init__(self, bad): + if bad == 1: + a = m.TestFactory2(tag.pointer, 1) + m.TestFactory1.__init__(a, tag.pointer) + elif bad == 2: + a = NotPybindDerived() + m.TestFactory1.__init__(a, tag.pointer) + + # Same as above, but for a class with an alias: + class BrokenTF6(m.TestFactory6): + def __init__(self, bad): + if bad == 1: + a = m.TestFactory2(tag.pointer, 1) + m.TestFactory6.__init__(a, tag.base, 1) + elif bad == 2: + a = m.TestFactory2(tag.pointer, 1) + m.TestFactory6.__init__(a, tag.alias, 1) + elif bad == 3: + m.TestFactory6.__init__(NotPybindDerived.__new__(NotPybindDerived), tag.base, 1) + elif bad == 4: + m.TestFactory6.__init__(NotPybindDerived.__new__(NotPybindDerived), tag.alias, 1) + + for arg in (1, 2): + with pytest.raises(TypeError) as excinfo: + BrokenTF1(arg) + assert str(excinfo.value) == "__init__(self, ...) called with invalid `self` argument" + + for arg in (1, 2, 3, 4): + with pytest.raises(TypeError) as excinfo: + BrokenTF6(arg) + assert str(excinfo.value) == "__init__(self, ...) called with invalid `self` argument" diff --git a/ext/pybind11/tests/test_inheritance.cpp b/ext/pybind11/tests/test_inheritance.cpp deleted file mode 100644 index c19f58dc2..000000000 --- a/ext/pybind11/tests/test_inheritance.cpp +++ /dev/null @@ -1,123 +0,0 @@ -/* - tests/test_inheritance.cpp -- inheritance, automatic upcasting for polymorphic types - - Copyright (c) 2016 Wenzel Jakob <wenzel.jakob@epfl.ch> - - All rights reserved. Use of this source code is governed by a - BSD-style license that can be found in the LICENSE file. -*/ - -#include "pybind11_tests.h" - -class Pet { -public: - Pet(const std::string &name, const std::string &species) - : m_name(name), m_species(species) {} - std::string name() const { return m_name; } - std::string species() const { return m_species; } -private: - std::string m_name; - std::string m_species; -}; - -class Dog : public Pet { -public: - Dog(const std::string &name) : Pet(name, "dog") {} - std::string bark() const { return "Woof!"; } -}; - -class Rabbit : public Pet { -public: - Rabbit(const std::string &name) : Pet(name, "parrot") {} -}; - -class Hamster : public Pet { -public: - Hamster(const std::string &name) : Pet(name, "rodent") {} -}; - -class Chimera : public Pet { - Chimera() : Pet("Kimmy", "chimera") {} -}; - -std::string pet_name_species(const Pet &pet) { - return pet.name() + " is a " + pet.species(); -} - -std::string dog_bark(const Dog &dog) { - return dog.bark(); -} - - -struct BaseClass { virtual ~BaseClass() {} }; -struct DerivedClass1 : BaseClass { }; -struct DerivedClass2 : BaseClass { }; - -struct MismatchBase1 { }; -struct MismatchDerived1 : MismatchBase1 { }; - -struct MismatchBase2 { }; -struct MismatchDerived2 : MismatchBase2 { }; - -test_initializer inheritance([](py::module &m) { - py::class_<Pet> pet_class(m, "Pet"); - pet_class - .def(py::init<std::string, std::string>()) - .def("name", &Pet::name) - .def("species", &Pet::species); - - /* One way of declaring a subclass relationship: reference parent's class_ object */ - py::class_<Dog>(m, "Dog", pet_class) - .def(py::init<std::string>()); - - /* Another way of declaring a subclass relationship: reference parent's C++ type */ - py::class_<Rabbit, Pet>(m, "Rabbit") - .def(py::init<std::string>()); - - /* And another: list parent in class template arguments */ - py::class_<Hamster, Pet>(m, "Hamster") - .def(py::init<std::string>()); - - py::class_<Chimera, Pet>(m, "Chimera"); - - m.def("pet_name_species", pet_name_species); - m.def("dog_bark", dog_bark); - - py::class_<BaseClass>(m, "BaseClass").def(py::init<>()); - py::class_<DerivedClass1>(m, "DerivedClass1").def(py::init<>()); - py::class_<DerivedClass2>(m, "DerivedClass2").def(py::init<>()); - - m.def("return_class_1", []() -> BaseClass* { return new DerivedClass1(); }); - m.def("return_class_2", []() -> BaseClass* { return new DerivedClass2(); }); - m.def("return_class_n", [](int n) -> BaseClass* { - if (n == 1) return new DerivedClass1(); - if (n == 2) return new DerivedClass2(); - return new BaseClass(); - }); - m.def("return_none", []() -> BaseClass* { return nullptr; }); - - m.def("test_isinstance", [](py::list l) { - struct Unregistered { }; // checks missing type_info code path - - return py::make_tuple( - py::isinstance<py::tuple>(l[0]), - py::isinstance<py::dict>(l[1]), - py::isinstance<Pet>(l[2]), - py::isinstance<Pet>(l[3]), - py::isinstance<Dog>(l[4]), - py::isinstance<Rabbit>(l[5]), - py::isinstance<Unregistered>(l[6]) - ); - }); - - m.def("test_mismatched_holder_type_1", []() { - auto m = py::module::import("__main__"); - py::class_<MismatchBase1, std::shared_ptr<MismatchBase1>>(m, "MismatchBase1"); - py::class_<MismatchDerived1, MismatchBase1>(m, "MismatchDerived1"); - }); - m.def("test_mismatched_holder_type_2", []() { - auto m = py::module::import("__main__"); - py::class_<MismatchBase2>(m, "MismatchBase2"); - py::class_<MismatchDerived2, std::shared_ptr<MismatchDerived2>, MismatchBase2>(m, "MismatchDerived2"); - }); -}); diff --git a/ext/pybind11/tests/test_inheritance.py b/ext/pybind11/tests/test_inheritance.py deleted file mode 100644 index d1f537d1d..000000000 --- a/ext/pybind11/tests/test_inheritance.py +++ /dev/null @@ -1,78 +0,0 @@ -import pytest - - -def test_inheritance(msg): - from pybind11_tests import Pet, Dog, Rabbit, Hamster, Chimera, dog_bark, pet_name_species - - roger = Rabbit('Rabbit') - assert roger.name() + " is a " + roger.species() == "Rabbit is a parrot" - assert pet_name_species(roger) == "Rabbit is a parrot" - - polly = Pet('Polly', 'parrot') - assert polly.name() + " is a " + polly.species() == "Polly is a parrot" - assert pet_name_species(polly) == "Polly is a parrot" - - molly = Dog('Molly') - assert molly.name() + " is a " + molly.species() == "Molly is a dog" - assert pet_name_species(molly) == "Molly is a dog" - - fred = Hamster('Fred') - assert fred.name() + " is a " + fred.species() == "Fred is a rodent" - - assert dog_bark(molly) == "Woof!" - - with pytest.raises(TypeError) as excinfo: - dog_bark(polly) - assert msg(excinfo.value) == """ - dog_bark(): incompatible function arguments. The following argument types are supported: - 1. (arg0: m.Dog) -> str - - Invoked with: <m.Pet object at 0> - """ - - with pytest.raises(TypeError) as excinfo: - Chimera("lion", "goat") - assert "No constructor defined!" in str(excinfo.value) - - -def test_automatic_upcasting(): - from pybind11_tests import return_class_1, return_class_2, return_class_n, return_none - - assert type(return_class_1()).__name__ == "DerivedClass1" - assert type(return_class_2()).__name__ == "DerivedClass2" - assert type(return_none()).__name__ == "NoneType" - # Repeat these a few times in a random order to ensure no invalid caching - # is applied - assert type(return_class_n(1)).__name__ == "DerivedClass1" - assert type(return_class_n(2)).__name__ == "DerivedClass2" - assert type(return_class_n(0)).__name__ == "BaseClass" - assert type(return_class_n(2)).__name__ == "DerivedClass2" - assert type(return_class_n(2)).__name__ == "DerivedClass2" - assert type(return_class_n(0)).__name__ == "BaseClass" - assert type(return_class_n(1)).__name__ == "DerivedClass1" - - -def test_isinstance(): - from pybind11_tests import test_isinstance, Pet, Dog - - objects = [tuple(), dict(), Pet("Polly", "parrot")] + [Dog("Molly")] * 4 - expected = (True, True, True, True, True, False, False) - assert test_isinstance(objects) == expected - - -def test_holder(): - from pybind11_tests import test_mismatched_holder_type_1, test_mismatched_holder_type_2 - - with pytest.raises(RuntimeError) as excinfo: - test_mismatched_holder_type_1() - - assert str(excinfo.value) == ("generic_type: type \"MismatchDerived1\" does not have " - "a non-default holder type while its base " - "\"MismatchBase1\" does") - - with pytest.raises(RuntimeError) as excinfo: - test_mismatched_holder_type_2() - - assert str(excinfo.value) == ("generic_type: type \"MismatchDerived2\" has a " - "non-default holder type while its base " - "\"MismatchBase2\" does not") diff --git a/ext/pybind11/tests/test_iostream.cpp b/ext/pybind11/tests/test_iostream.cpp new file mode 100644 index 000000000..e67f88af5 --- /dev/null +++ b/ext/pybind11/tests/test_iostream.cpp @@ -0,0 +1,73 @@ +/* + tests/test_iostream.cpp -- Usage of scoped_output_redirect + + Copyright (c) 2017 Henry F. Schreiner + + All rights reserved. Use of this source code is governed by a + BSD-style license that can be found in the LICENSE file. +*/ + + +#include <pybind11/iostream.h> +#include "pybind11_tests.h" +#include <iostream> + + +void noisy_function(std::string msg, bool flush) { + + std::cout << msg; + if (flush) + std::cout << std::flush; +} + +void noisy_funct_dual(std::string msg, std::string emsg) { + std::cout << msg; + std::cerr << emsg; +} + +TEST_SUBMODULE(iostream, m) { + + add_ostream_redirect(m); + + // test_evals + + m.def("captured_output_default", [](std::string msg) { + py::scoped_ostream_redirect redir; + std::cout << msg << std::flush; + }); + + m.def("captured_output", [](std::string msg) { + py::scoped_ostream_redirect redir(std::cout, py::module::import("sys").attr("stdout")); + std::cout << msg << std::flush; + }); + + m.def("guard_output", &noisy_function, + py::call_guard<py::scoped_ostream_redirect>(), + py::arg("msg"), py::arg("flush")=true); + + m.def("captured_err", [](std::string msg) { + py::scoped_ostream_redirect redir(std::cerr, py::module::import("sys").attr("stderr")); + std::cerr << msg << std::flush; + }); + + m.def("noisy_function", &noisy_function, py::arg("msg"), py::arg("flush") = true); + + m.def("dual_guard", &noisy_funct_dual, + py::call_guard<py::scoped_ostream_redirect, py::scoped_estream_redirect>(), + py::arg("msg"), py::arg("emsg")); + + m.def("raw_output", [](std::string msg) { + std::cout << msg << std::flush; + }); + + m.def("raw_err", [](std::string msg) { + std::cerr << msg << std::flush; + }); + + m.def("captured_dual", [](std::string msg, std::string emsg) { + py::scoped_ostream_redirect redirout(std::cout, py::module::import("sys").attr("stdout")); + py::scoped_ostream_redirect redirerr(std::cerr, py::module::import("sys").attr("stderr")); + std::cout << msg << std::flush; + std::cerr << emsg << std::flush; + }); +} diff --git a/ext/pybind11/tests/test_iostream.py b/ext/pybind11/tests/test_iostream.py new file mode 100644 index 000000000..3364849a4 --- /dev/null +++ b/ext/pybind11/tests/test_iostream.py @@ -0,0 +1,203 @@ +from pybind11_tests import iostream as m +import sys + +from contextlib import contextmanager + +try: + # Python 3 + from io import StringIO +except ImportError: + # Python 2 + try: + from cStringIO import StringIO + except ImportError: + from StringIO import StringIO + +try: + # Python 3.4 + from contextlib import redirect_stdout +except ImportError: + @contextmanager + def redirect_stdout(target): + original = sys.stdout + sys.stdout = target + yield + sys.stdout = original + +try: + # Python 3.5 + from contextlib import redirect_stderr +except ImportError: + @contextmanager + def redirect_stderr(target): + original = sys.stderr + sys.stderr = target + yield + sys.stderr = original + + +def test_captured(capsys): + msg = "I've been redirected to Python, I hope!" + m.captured_output(msg) + stdout, stderr = capsys.readouterr() + assert stdout == msg + assert stderr == '' + + m.captured_output_default(msg) + stdout, stderr = capsys.readouterr() + assert stdout == msg + assert stderr == '' + + m.captured_err(msg) + stdout, stderr = capsys.readouterr() + assert stdout == '' + assert stderr == msg + + +def test_guard_capture(capsys): + msg = "I've been redirected to Python, I hope!" + m.guard_output(msg) + stdout, stderr = capsys.readouterr() + assert stdout == msg + assert stderr == '' + + +def test_series_captured(capture): + with capture: + m.captured_output("a") + m.captured_output("b") + assert capture == "ab" + + +def test_flush(capfd): + msg = "(not flushed)" + msg2 = "(flushed)" + + with m.ostream_redirect(): + m.noisy_function(msg, flush=False) + stdout, stderr = capfd.readouterr() + assert stdout == '' + + m.noisy_function(msg2, flush=True) + stdout, stderr = capfd.readouterr() + assert stdout == msg + msg2 + + m.noisy_function(msg, flush=False) + + stdout, stderr = capfd.readouterr() + assert stdout == msg + + +def test_not_captured(capfd): + msg = "Something that should not show up in log" + stream = StringIO() + with redirect_stdout(stream): + m.raw_output(msg) + stdout, stderr = capfd.readouterr() + assert stdout == msg + assert stderr == '' + assert stream.getvalue() == '' + + stream = StringIO() + with redirect_stdout(stream): + m.captured_output(msg) + stdout, stderr = capfd.readouterr() + assert stdout == '' + assert stderr == '' + assert stream.getvalue() == msg + + +def test_err(capfd): + msg = "Something that should not show up in log" + stream = StringIO() + with redirect_stderr(stream): + m.raw_err(msg) + stdout, stderr = capfd.readouterr() + assert stdout == '' + assert stderr == msg + assert stream.getvalue() == '' + + stream = StringIO() + with redirect_stderr(stream): + m.captured_err(msg) + stdout, stderr = capfd.readouterr() + assert stdout == '' + assert stderr == '' + assert stream.getvalue() == msg + + +def test_multi_captured(capfd): + stream = StringIO() + with redirect_stdout(stream): + m.captured_output("a") + m.raw_output("b") + m.captured_output("c") + m.raw_output("d") + stdout, stderr = capfd.readouterr() + assert stdout == 'bd' + assert stream.getvalue() == 'ac' + + +def test_dual(capsys): + m.captured_dual("a", "b") + stdout, stderr = capsys.readouterr() + assert stdout == "a" + assert stderr == "b" + + +def test_redirect(capfd): + msg = "Should not be in log!" + stream = StringIO() + with redirect_stdout(stream): + m.raw_output(msg) + stdout, stderr = capfd.readouterr() + assert stdout == msg + assert stream.getvalue() == '' + + stream = StringIO() + with redirect_stdout(stream): + with m.ostream_redirect(): + m.raw_output(msg) + stdout, stderr = capfd.readouterr() + assert stdout == '' + assert stream.getvalue() == msg + + stream = StringIO() + with redirect_stdout(stream): + m.raw_output(msg) + stdout, stderr = capfd.readouterr() + assert stdout == msg + assert stream.getvalue() == '' + + +def test_redirect_err(capfd): + msg = "StdOut" + msg2 = "StdErr" + + stream = StringIO() + with redirect_stderr(stream): + with m.ostream_redirect(stdout=False): + m.raw_output(msg) + m.raw_err(msg2) + stdout, stderr = capfd.readouterr() + assert stdout == msg + assert stderr == '' + assert stream.getvalue() == msg2 + + +def test_redirect_both(capfd): + msg = "StdOut" + msg2 = "StdErr" + + stream = StringIO() + stream2 = StringIO() + with redirect_stdout(stream): + with redirect_stderr(stream2): + with m.ostream_redirect(): + m.raw_output(msg) + m.raw_err(msg2) + stdout, stderr = capfd.readouterr() + assert stdout == '' + assert stderr == '' + assert stream.getvalue() == msg + assert stream2.getvalue() == msg2 diff --git a/ext/pybind11/tests/test_issues.cpp b/ext/pybind11/tests/test_issues.cpp deleted file mode 100644 index 7da370045..000000000 --- a/ext/pybind11/tests/test_issues.cpp +++ /dev/null @@ -1,400 +0,0 @@ -/* - tests/test_issues.cpp -- collection of testcases for miscellaneous issues - - Copyright (c) 2016 Wenzel Jakob <wenzel.jakob@epfl.ch> - - All rights reserved. Use of this source code is governed by a - BSD-style license that can be found in the LICENSE file. -*/ - -#include "pybind11_tests.h" -#include "constructor_stats.h" -#include <pybind11/stl.h> -#include <pybind11/operators.h> -#include <pybind11/complex.h> - -#define TRACKERS(CLASS) CLASS() { print_default_created(this); } ~CLASS() { print_destroyed(this); } -struct NestABase { int value = -2; TRACKERS(NestABase) }; -struct NestA : NestABase { int value = 3; NestA& operator+=(int i) { value += i; return *this; } TRACKERS(NestA) }; -struct NestB { NestA a; int value = 4; NestB& operator-=(int i) { value -= i; return *this; } TRACKERS(NestB) }; -struct NestC { NestB b; int value = 5; NestC& operator*=(int i) { value *= i; return *this; } TRACKERS(NestC) }; - -/// #393 -class OpTest1 {}; -class OpTest2 {}; - -OpTest1 operator+(const OpTest1 &, const OpTest1 &) { - py::print("Add OpTest1 with OpTest1"); - return OpTest1(); -} -OpTest2 operator+(const OpTest2 &, const OpTest2 &) { - py::print("Add OpTest2 with OpTest2"); - return OpTest2(); -} -OpTest2 operator+(const OpTest2 &, const OpTest1 &) { - py::print("Add OpTest2 with OpTest1"); - return OpTest2(); -} - -// #461 -class Dupe1 { -public: - Dupe1(int v) : v_{v} {} - int get_value() const { return v_; } -private: - int v_; -}; -class Dupe2 {}; -class Dupe3 {}; -class DupeException : public std::runtime_error {}; - -// #478 -template <typename T> class custom_unique_ptr { -public: - custom_unique_ptr() { print_default_created(this); } - custom_unique_ptr(T *ptr) : _ptr{ptr} { print_created(this, ptr); } - custom_unique_ptr(custom_unique_ptr<T> &&move) : _ptr{move._ptr} { move._ptr = nullptr; print_move_created(this); } - custom_unique_ptr &operator=(custom_unique_ptr<T> &&move) { print_move_assigned(this); if (_ptr) destruct_ptr(); _ptr = move._ptr; move._ptr = nullptr; return *this; } - custom_unique_ptr(const custom_unique_ptr<T> &) = delete; - void operator=(const custom_unique_ptr<T> ©) = delete; - ~custom_unique_ptr() { print_destroyed(this); if (_ptr) destruct_ptr(); } -private: - T *_ptr = nullptr; - void destruct_ptr() { delete _ptr; } -}; -PYBIND11_DECLARE_HOLDER_TYPE(T, custom_unique_ptr<T>); - -/// Issue #528: templated constructor -struct TplConstrClass { - template <typename T> TplConstrClass(const T &arg) : str{arg} {} - std::string str; - bool operator==(const TplConstrClass &t) const { return t.str == str; } -}; -namespace std { -template <> struct hash<TplConstrClass> { size_t operator()(const TplConstrClass &t) const { return std::hash<std::string>()(t.str); } }; -} - -void init_issues(py::module &m) { - py::module m2 = m.def_submodule("issues"); - -#if !defined(_MSC_VER) - // Visual Studio 2015 currently cannot compile this test - // (see the comment in type_caster_base::make_copy_constructor) - // #70 compilation issue if operator new is not public - class NonConstructible { private: void *operator new(size_t bytes) throw(); }; - py::class_<NonConstructible>(m, "Foo"); - m2.def("getstmt", []() -> NonConstructible * { return nullptr; }, - py::return_value_policy::reference); -#endif - - // #137: const char* isn't handled properly - m2.def("print_cchar", [](const char *s) { return std::string(s); }); - - // #150: char bindings broken - m2.def("print_char", [](char c) { return std::string(1, c); }); - - // #159: virtual function dispatch has problems with similar-named functions - struct Base { virtual std::string dispatch() const { - /* for some reason MSVC2015 can't compile this if the function is pure virtual */ - return {}; - }; }; - - struct DispatchIssue : Base { - virtual std::string dispatch() const { - PYBIND11_OVERLOAD_PURE(std::string, Base, dispatch, /* no arguments */); - } - }; - - py::class_<Base, DispatchIssue>(m2, "DispatchIssue") - .def(py::init<>()) - .def("dispatch", &Base::dispatch); - - m2.def("dispatch_issue_go", [](const Base * b) { return b->dispatch(); }); - - struct Placeholder { int i; Placeholder(int i) : i(i) { } }; - - py::class_<Placeholder>(m2, "Placeholder") - .def(py::init<int>()) - .def("__repr__", [](const Placeholder &p) { return "Placeholder[" + std::to_string(p.i) + "]"; }); - - // #171: Can't return reference wrappers (or STL datastructures containing them) - m2.def("return_vec_of_reference_wrapper", [](std::reference_wrapper<Placeholder> p4) { - Placeholder *p1 = new Placeholder{1}; - Placeholder *p2 = new Placeholder{2}; - Placeholder *p3 = new Placeholder{3}; - std::vector<std::reference_wrapper<Placeholder>> v; - v.push_back(std::ref(*p1)); - v.push_back(std::ref(*p2)); - v.push_back(std::ref(*p3)); - v.push_back(p4); - return v; - }); - - // #181: iterator passthrough did not compile - m2.def("iterator_passthrough", [](py::iterator s) -> py::iterator { - return py::make_iterator(std::begin(s), std::end(s)); - }); - - // #187: issue involving std::shared_ptr<> return value policy & garbage collection - struct ElementBase { virtual void foo() { } /* Force creation of virtual table */ }; - struct ElementA : ElementBase { - ElementA(int v) : v(v) { } - int value() { return v; } - int v; - }; - - struct ElementList { - void add(std::shared_ptr<ElementBase> e) { l.push_back(e); } - std::vector<std::shared_ptr<ElementBase>> l; - }; - - py::class_<ElementBase, std::shared_ptr<ElementBase>> (m2, "ElementBase"); - - py::class_<ElementA, ElementBase, std::shared_ptr<ElementA>>(m2, "ElementA") - .def(py::init<int>()) - .def("value", &ElementA::value); - - py::class_<ElementList, std::shared_ptr<ElementList>>(m2, "ElementList") - .def(py::init<>()) - .def("add", &ElementList::add) - .def("get", [](ElementList &el) { - py::list list; - for (auto &e : el.l) - list.append(py::cast(e)); - return list; - }); - - // (no id): should not be able to pass 'None' to a reference argument - m2.def("get_element", [](ElementA &el) { return el.value(); }); - - // (no id): don't cast doubles to ints - m2.def("expect_float", [](float f) { return f; }); - m2.def("expect_int", [](int i) { return i; }); - - try { - py::class_<Placeholder>(m2, "Placeholder"); - throw std::logic_error("Expected an exception!"); - } catch (std::runtime_error &) { - /* All good */ - } - - // Issue #283: __str__ called on uninitialized instance when constructor arguments invalid - class StrIssue { - public: - StrIssue(int i) : val{i} {} - StrIssue() : StrIssue(-1) {} - int value() const { return val; } - private: - int val; - }; - py::class_<StrIssue> si(m2, "StrIssue"); - si .def(py::init<int>()) - .def(py::init<>()) - .def("__str__", [](const StrIssue &si) { return "StrIssue[" + std::to_string(si.value()) + "]"; }) - ; - - // Issue #328: first member in a class can't be used in operators - py::class_<NestABase>(m2, "NestABase").def(py::init<>()).def_readwrite("value", &NestABase::value); - py::class_<NestA>(m2, "NestA").def(py::init<>()).def(py::self += int()) - .def("as_base", [](NestA &a) -> NestABase& { return (NestABase&) a; }, py::return_value_policy::reference_internal); - py::class_<NestB>(m2, "NestB").def(py::init<>()).def(py::self -= int()).def_readwrite("a", &NestB::a); - py::class_<NestC>(m2, "NestC").def(py::init<>()).def(py::self *= int()).def_readwrite("b", &NestC::b); - m2.def("get_NestA", [](const NestA &a) { return a.value; }); - m2.def("get_NestB", [](const NestB &b) { return b.value; }); - m2.def("get_NestC", [](const NestC &c) { return c.value; }); - - // Issue 389: r_v_p::move should fall-through to copy on non-movable objects - class MoveIssue1 { - public: - MoveIssue1(int v) : v{v} {} - MoveIssue1(const MoveIssue1 &c) { v = c.v; } - MoveIssue1(MoveIssue1 &&) = delete; - int v; - }; - class MoveIssue2 { - public: - MoveIssue2(int v) : v{v} {} - MoveIssue2(MoveIssue2 &&) = default; - int v; - }; - py::class_<MoveIssue1>(m2, "MoveIssue1").def(py::init<int>()).def_readwrite("value", &MoveIssue1::v); - py::class_<MoveIssue2>(m2, "MoveIssue2").def(py::init<int>()).def_readwrite("value", &MoveIssue2::v); - m2.def("get_moveissue1", [](int i) -> MoveIssue1 * { return new MoveIssue1(i); }, py::return_value_policy::move); - m2.def("get_moveissue2", [](int i) { return MoveIssue2(i); }, py::return_value_policy::move); - - // Issues 392/397: overridding reference-returning functions - class OverrideTest { - public: - struct A { std::string value = "hi"; }; - std::string v; - A a; - explicit OverrideTest(const std::string &v) : v{v} {} - virtual std::string str_value() { return v; } - virtual std::string &str_ref() { return v; } - virtual A A_value() { return a; } - virtual A &A_ref() { return a; } - }; - class PyOverrideTest : public OverrideTest { - public: - using OverrideTest::OverrideTest; - std::string str_value() override { PYBIND11_OVERLOAD(std::string, OverrideTest, str_value); } - // Not allowed (uncommenting should hit a static_assert failure): we can't get a reference - // to a python numeric value, since we only copy values in the numeric type caster: -// std::string &str_ref() override { PYBIND11_OVERLOAD(std::string &, OverrideTest, str_ref); } - // But we can work around it like this: - private: - std::string _tmp; - std::string str_ref_helper() { PYBIND11_OVERLOAD(std::string, OverrideTest, str_ref); } - public: - std::string &str_ref() override { return _tmp = str_ref_helper(); } - - A A_value() override { PYBIND11_OVERLOAD(A, OverrideTest, A_value); } - A &A_ref() override { PYBIND11_OVERLOAD(A &, OverrideTest, A_ref); } - }; - py::class_<OverrideTest::A>(m2, "OverrideTest_A") - .def_readwrite("value", &OverrideTest::A::value); - py::class_<OverrideTest, PyOverrideTest>(m2, "OverrideTest") - .def(py::init<const std::string &>()) - .def("str_value", &OverrideTest::str_value) -// .def("str_ref", &OverrideTest::str_ref) - .def("A_value", &OverrideTest::A_value) - .def("A_ref", &OverrideTest::A_ref); - - /// Issue 393: need to return NotSupported to ensure correct arithmetic operator behavior - py::class_<OpTest1>(m2, "OpTest1") - .def(py::init<>()) - .def(py::self + py::self); - - py::class_<OpTest2>(m2, "OpTest2") - .def(py::init<>()) - .def(py::self + py::self) - .def("__add__", [](const OpTest2& c2, const OpTest1& c1) { return c2 + c1; }) - .def("__radd__", [](const OpTest2& c2, const OpTest1& c1) { return c2 + c1; }); - - // Issue 388: Can't make iterators via make_iterator() with different r/v policies - static std::vector<int> list = { 1, 2, 3 }; - m2.def("make_iterator_1", []() { return py::make_iterator<py::return_value_policy::copy>(list); }); - m2.def("make_iterator_2", []() { return py::make_iterator<py::return_value_policy::automatic>(list); }); - - static std::vector<std::string> nothrows; - // Issue 461: registering two things with the same name: - py::class_<Dupe1>(m2, "Dupe1") - .def("get_value", &Dupe1::get_value) - ; - m2.def("dupe1_factory", [](int v) { return new Dupe1(v); }); - - py::class_<Dupe2>(m2, "Dupe2"); - py::exception<DupeException>(m2, "DupeException"); - - try { - m2.def("Dupe1", [](int v) { return new Dupe1(v); }); - nothrows.emplace_back("Dupe1"); - } - catch (std::runtime_error &) {} - try { - py::class_<Dupe3>(m2, "dupe1_factory"); - nothrows.emplace_back("dupe1_factory"); - } - catch (std::runtime_error &) {} - try { - py::exception<Dupe3>(m2, "Dupe2"); - nothrows.emplace_back("Dupe2"); - } - catch (std::runtime_error &) {} - try { - m2.def("DupeException", []() { return 30; }); - nothrows.emplace_back("DupeException1"); - } - catch (std::runtime_error &) {} - try { - py::class_<DupeException>(m2, "DupeException"); - nothrows.emplace_back("DupeException2"); - } - catch (std::runtime_error &) {} - m2.def("dupe_exception_failures", []() { - py::list l; - for (auto &e : nothrows) l.append(py::cast(e)); - return l; - }); - - /// Issue #471: shared pointer instance not dellocated - class SharedChild : public std::enable_shared_from_this<SharedChild> { - public: - SharedChild() { print_created(this); } - ~SharedChild() { print_destroyed(this); } - }; - - class SharedParent { - public: - SharedParent() : child(std::make_shared<SharedChild>()) { } - const SharedChild &get_child() const { return *child; } - - private: - std::shared_ptr<SharedChild> child; - }; - - py::class_<SharedChild, std::shared_ptr<SharedChild>>(m, "SharedChild"); - py::class_<SharedParent, std::shared_ptr<SharedParent>>(m, "SharedParent") - .def(py::init<>()) - .def("get_child", &SharedParent::get_child, py::return_value_policy::reference); - - /// Issue/PR #478: unique ptrs constructed and freed without destruction - class SpecialHolderObj { - public: - int val = 0; - SpecialHolderObj *ch = nullptr; - SpecialHolderObj(int v, bool make_child = true) : val{v}, ch{make_child ? new SpecialHolderObj(val+1, false) : nullptr} - { print_created(this, val); } - ~SpecialHolderObj() { delete ch; print_destroyed(this); } - SpecialHolderObj *child() { return ch; } - }; - - py::class_<SpecialHolderObj, custom_unique_ptr<SpecialHolderObj>>(m, "SpecialHolderObj") - .def(py::init<int>()) - .def("child", &SpecialHolderObj::child, pybind11::return_value_policy::reference_internal) - .def_readwrite("val", &SpecialHolderObj::val) - .def_static("holder_cstats", &ConstructorStats::get<custom_unique_ptr<SpecialHolderObj>>, - py::return_value_policy::reference); - - /// Issue #484: number conversion generates unhandled exceptions - m2.def("test_complex", [](float x) { py::print("{}"_s.format(x)); }); - m2.def("test_complex", [](std::complex<float> x) { py::print("({}, {})"_s.format(x.real(), x.imag())); }); - - /// Issue #511: problem with inheritance + overwritten def_static - struct MyBase { - static std::unique_ptr<MyBase> make() { - return std::unique_ptr<MyBase>(new MyBase()); - } - }; - - struct MyDerived : MyBase { - static std::unique_ptr<MyDerived> make() { - return std::unique_ptr<MyDerived>(new MyDerived()); - } - }; - - py::class_<MyBase>(m2, "MyBase") - .def_static("make", &MyBase::make); - - py::class_<MyDerived, MyBase>(m2, "MyDerived") - .def_static("make", &MyDerived::make) - .def_static("make2", &MyDerived::make); - - py::dict d; - std::string bar = "bar"; - d["str"] = bar; - d["num"] = 3.7; - - /// Issue #528: templated constructor - m2.def("tpl_constr_vector", [](std::vector<TplConstrClass> &) {}); - m2.def("tpl_constr_map", [](std::unordered_map<TplConstrClass, TplConstrClass> &) {}); - m2.def("tpl_constr_set", [](std::unordered_set<TplConstrClass> &) {}); -#if defined(PYBIND11_HAS_OPTIONAL) - m2.def("tpl_constr_optional", [](std::optional<TplConstrClass> &) {}); -#elif defined(PYBIND11_HAS_EXP_OPTIONAL) - m2.def("tpl_constr_optional", [](std::experimental::optional<TplConstrClass> &) {}); -#endif -} - -// MSVC workaround: trying to use a lambda here crashes MSVC -test_initializer issues(&init_issues); diff --git a/ext/pybind11/tests/test_issues.py b/ext/pybind11/tests/test_issues.py deleted file mode 100644 index e60b5ca90..000000000 --- a/ext/pybind11/tests/test_issues.py +++ /dev/null @@ -1,251 +0,0 @@ -import pytest -from pybind11_tests import ConstructorStats - - -def test_regressions(): - from pybind11_tests.issues import print_cchar, print_char - - # #137: const char* isn't handled properly - assert print_cchar("const char *") == "const char *" - # #150: char bindings broken - assert print_char("c") == "c" - - -def test_dispatch_issue(msg): - """#159: virtual function dispatch has problems with similar-named functions""" - from pybind11_tests.issues import DispatchIssue, dispatch_issue_go - - class PyClass1(DispatchIssue): - def dispatch(self): - return "Yay.." - - class PyClass2(DispatchIssue): - def dispatch(self): - with pytest.raises(RuntimeError) as excinfo: - super(PyClass2, self).dispatch() - assert msg(excinfo.value) == 'Tried to call pure virtual function "Base::dispatch"' - - p = PyClass1() - return dispatch_issue_go(p) - - b = PyClass2() - assert dispatch_issue_go(b) == "Yay.." - - -def test_reference_wrapper(): - """#171: Can't return reference wrappers (or STL data structures containing them)""" - from pybind11_tests.issues import Placeholder, return_vec_of_reference_wrapper - - assert str(return_vec_of_reference_wrapper(Placeholder(4))) == \ - "[Placeholder[1], Placeholder[2], Placeholder[3], Placeholder[4]]" - - -def test_iterator_passthrough(): - """#181: iterator passthrough did not compile""" - from pybind11_tests.issues import iterator_passthrough - - assert list(iterator_passthrough(iter([3, 5, 7, 9, 11, 13, 15]))) == [3, 5, 7, 9, 11, 13, 15] - - -def test_shared_ptr_gc(): - """// #187: issue involving std::shared_ptr<> return value policy & garbage collection""" - from pybind11_tests.issues import ElementList, ElementA - - el = ElementList() - for i in range(10): - el.add(ElementA(i)) - pytest.gc_collect() - for i, v in enumerate(el.get()): - assert i == v.value() - - -def test_no_id(msg): - from pybind11_tests.issues import get_element, expect_float, expect_int - - with pytest.raises(TypeError) as excinfo: - get_element(None) - assert msg(excinfo.value) == """ - get_element(): incompatible function arguments. The following argument types are supported: - 1. (arg0: m.issues.ElementA) -> int - - Invoked with: None - """ - - with pytest.raises(TypeError) as excinfo: - expect_int(5.2) - assert msg(excinfo.value) == """ - expect_int(): incompatible function arguments. The following argument types are supported: - 1. (arg0: int) -> int - - Invoked with: 5.2 - """ - assert expect_float(12) == 12 - - -def test_str_issue(msg): - """Issue #283: __str__ called on uninitialized instance when constructor arguments invalid""" - from pybind11_tests.issues import StrIssue - - assert str(StrIssue(3)) == "StrIssue[3]" - - with pytest.raises(TypeError) as excinfo: - str(StrIssue("no", "such", "constructor")) - assert msg(excinfo.value) == """ - __init__(): incompatible constructor arguments. The following argument types are supported: - 1. m.issues.StrIssue(arg0: int) - 2. m.issues.StrIssue() - - Invoked with: 'no', 'such', 'constructor' - """ - - -def test_nested(): - """ #328: first member in a class can't be used in operators""" - from pybind11_tests.issues import NestA, NestB, NestC, get_NestA, get_NestB, get_NestC - - a = NestA() - b = NestB() - c = NestC() - - a += 10 - assert get_NestA(a) == 13 - b.a += 100 - assert get_NestA(b.a) == 103 - c.b.a += 1000 - assert get_NestA(c.b.a) == 1003 - b -= 1 - assert get_NestB(b) == 3 - c.b -= 3 - assert get_NestB(c.b) == 1 - c *= 7 - assert get_NestC(c) == 35 - - abase = a.as_base() - assert abase.value == -2 - a.as_base().value += 44 - assert abase.value == 42 - assert c.b.a.as_base().value == -2 - c.b.a.as_base().value += 44 - assert c.b.a.as_base().value == 42 - - del c - pytest.gc_collect() - del a # Should't delete while abase is still alive - pytest.gc_collect() - - assert abase.value == 42 - del abase, b - pytest.gc_collect() - - -def test_move_fallback(): - from pybind11_tests.issues import get_moveissue1, get_moveissue2 - m2 = get_moveissue2(2) - assert m2.value == 2 - m1 = get_moveissue1(1) - assert m1.value == 1 - - -def test_override_ref(): - from pybind11_tests.issues import OverrideTest - o = OverrideTest("asdf") - - # Not allowed (see associated .cpp comment) - # i = o.str_ref() - # assert o.str_ref() == "asdf" - assert o.str_value() == "asdf" - - assert o.A_value().value == "hi" - a = o.A_ref() - assert a.value == "hi" - a.value = "bye" - assert a.value == "bye" - - -def test_operators_notimplemented(capture): - from pybind11_tests.issues import OpTest1, OpTest2 - with capture: - c1, c2 = OpTest1(), OpTest2() - c1 + c1 - c2 + c2 - c2 + c1 - c1 + c2 - assert capture == """ - Add OpTest1 with OpTest1 - Add OpTest2 with OpTest2 - Add OpTest2 with OpTest1 - Add OpTest2 with OpTest1 - """ - - -def test_iterator_rvpolicy(): - """ Issue 388: Can't make iterators via make_iterator() with different r/v policies """ - from pybind11_tests.issues import make_iterator_1 - from pybind11_tests.issues import make_iterator_2 - - assert list(make_iterator_1()) == [1, 2, 3] - assert list(make_iterator_2()) == [1, 2, 3] - assert not isinstance(make_iterator_1(), type(make_iterator_2())) - - -def test_dupe_assignment(): - """ Issue 461: overwriting a class with a function """ - from pybind11_tests.issues import dupe_exception_failures - assert dupe_exception_failures() == [] - - -def test_enable_shared_from_this_with_reference_rvp(): - """ Issue #471: shared pointer instance not dellocated """ - from pybind11_tests import SharedParent, SharedChild - - parent = SharedParent() - child = parent.get_child() - - cstats = ConstructorStats.get(SharedChild) - assert cstats.alive() == 1 - del child, parent - assert cstats.alive() == 0 - - -def test_non_destructed_holders(): - """ Issue #478: unique ptrs constructed and freed without destruction """ - from pybind11_tests import SpecialHolderObj - - a = SpecialHolderObj(123) - b = a.child() - - assert a.val == 123 - assert b.val == 124 - - cstats = SpecialHolderObj.holder_cstats() - assert cstats.alive() == 1 - del b - assert cstats.alive() == 1 - del a - assert cstats.alive() == 0 - - -def test_complex_cast(capture): - """ Issue #484: number conversion generates unhandled exceptions """ - from pybind11_tests.issues import test_complex - - with capture: - test_complex(1) - test_complex(2j) - - assert capture == """ - 1.0 - (0.0, 2.0) - """ - - -def test_inheritance_override_def_static(): - from pybind11_tests.issues import MyBase, MyDerived - - b = MyBase.make() - d1 = MyDerived.make2() - d2 = MyDerived.make() - - assert isinstance(b, MyBase) - assert isinstance(d1, MyDerived) - assert isinstance(d2, MyDerived) diff --git a/ext/pybind11/tests/test_keep_alive.cpp b/ext/pybind11/tests/test_keep_alive.cpp deleted file mode 100644 index cd62a02e8..000000000 --- a/ext/pybind11/tests/test_keep_alive.cpp +++ /dev/null @@ -1,40 +0,0 @@ -/* - tests/test_keep_alive.cpp -- keep_alive modifier (pybind11's version - of Boost.Python's with_custodian_and_ward / with_custodian_and_ward_postcall) - - Copyright (c) 2016 Wenzel Jakob <wenzel.jakob@epfl.ch> - - All rights reserved. Use of this source code is governed by a - BSD-style license that can be found in the LICENSE file. -*/ - -#include "pybind11_tests.h" - -class Child { -public: - Child() { py::print("Allocating child."); } - ~Child() { py::print("Releasing child."); } -}; - -class Parent { -public: - Parent() { py::print("Allocating parent."); } - ~Parent() { py::print("Releasing parent."); } - void addChild(Child *) { } - Child *returnChild() { return new Child(); } - Child *returnNullChild() { return nullptr; } -}; - -test_initializer keep_alive([](py::module &m) { - py::class_<Parent>(m, "Parent") - .def(py::init<>()) - .def("addChild", &Parent::addChild) - .def("addChildKeepAlive", &Parent::addChild, py::keep_alive<1, 2>()) - .def("returnChild", &Parent::returnChild) - .def("returnChildKeepAlive", &Parent::returnChild, py::keep_alive<1, 0>()) - .def("returnNullChildKeepAliveChild", &Parent::returnNullChild, py::keep_alive<1, 0>()) - .def("returnNullChildKeepAliveParent", &Parent::returnNullChild, py::keep_alive<0, 1>()); - - py::class_<Child>(m, "Child") - .def(py::init<>()); -}); diff --git a/ext/pybind11/tests/test_keep_alive.py b/ext/pybind11/tests/test_keep_alive.py deleted file mode 100644 index bfd7d40c3..000000000 --- a/ext/pybind11/tests/test_keep_alive.py +++ /dev/null @@ -1,97 +0,0 @@ -import pytest - - -def test_keep_alive_argument(capture): - from pybind11_tests import Parent, Child - - with capture: - p = Parent() - assert capture == "Allocating parent." - with capture: - p.addChild(Child()) - pytest.gc_collect() - assert capture == """ - Allocating child. - Releasing child. - """ - with capture: - del p - pytest.gc_collect() - assert capture == "Releasing parent." - - with capture: - p = Parent() - assert capture == "Allocating parent." - with capture: - p.addChildKeepAlive(Child()) - pytest.gc_collect() - assert capture == "Allocating child." - with capture: - del p - pytest.gc_collect() - assert capture == """ - Releasing parent. - Releasing child. - """ - - -def test_keep_alive_return_value(capture): - from pybind11_tests import Parent - - with capture: - p = Parent() - assert capture == "Allocating parent." - with capture: - p.returnChild() - pytest.gc_collect() - assert capture == """ - Allocating child. - Releasing child. - """ - with capture: - del p - pytest.gc_collect() - assert capture == "Releasing parent." - - with capture: - p = Parent() - assert capture == "Allocating parent." - with capture: - p.returnChildKeepAlive() - pytest.gc_collect() - assert capture == "Allocating child." - with capture: - del p - pytest.gc_collect() - assert capture == """ - Releasing parent. - Releasing child. - """ - - -def test_return_none(capture): - from pybind11_tests import Parent - - with capture: - p = Parent() - assert capture == "Allocating parent." - with capture: - p.returnNullChildKeepAliveChild() - pytest.gc_collect() - assert capture == "" - with capture: - del p - pytest.gc_collect() - assert capture == "Releasing parent." - - with capture: - p = Parent() - assert capture == "Allocating parent." - with capture: - p.returnNullChildKeepAliveParent() - pytest.gc_collect() - assert capture == "" - with capture: - del p - pytest.gc_collect() - assert capture == "Releasing parent." diff --git a/ext/pybind11/tests/test_kwargs_and_defaults.cpp b/ext/pybind11/tests/test_kwargs_and_defaults.cpp index 3180123df..165f8017e 100644 --- a/ext/pybind11/tests/test_kwargs_and_defaults.cpp +++ b/ext/pybind11/tests/test_kwargs_and_defaults.cpp @@ -10,84 +10,62 @@ #include "pybind11_tests.h" #include <pybind11/stl.h> -std::string kw_func(int x, int y) { return "x=" + std::to_string(x) + ", y=" + std::to_string(y); } +TEST_SUBMODULE(kwargs_and_defaults, m) { + auto kw_func = [](int x, int y) { return "x=" + std::to_string(x) + ", y=" + std::to_string(y); }; -std::string kw_func4(const std::vector<int> &entries) { - std::string ret = "{"; - for (int i : entries) - ret += std::to_string(i) + " "; - ret.back() = '}'; - return ret; -} - -py::tuple args_function(py::args args) { - return args; -} - -py::tuple args_kwargs_function(py::args args, py::kwargs kwargs) { - return py::make_tuple(args, kwargs); -} - -py::tuple mixed_plus_args(int i, double j, py::args args) { - return py::make_tuple(i, j, args); -} - -py::tuple mixed_plus_kwargs(int i, double j, py::kwargs kwargs) { - return py::make_tuple(i, j, kwargs); -} - -py::tuple mixed_plus_args_kwargs(int i, double j, py::args args, py::kwargs kwargs) { - return py::make_tuple(i, j, args, kwargs); -} - -// pybind11 won't allow these to be bound: args and kwargs, if present, must be at the end. -void bad_args1(py::args, int) {} -void bad_args2(py::kwargs, int) {} -void bad_args3(py::kwargs, py::args) {} -void bad_args4(py::args, int, py::kwargs) {} -void bad_args5(py::args, py::kwargs, int) {} -void bad_args6(py::args, py::args) {} -void bad_args7(py::kwargs, py::kwargs) {} - -struct KWClass { - void foo(int, float) {} -}; - -test_initializer arg_keywords_and_defaults([](py::module &m) { - m.def("kw_func0", &kw_func); - m.def("kw_func1", &kw_func, py::arg("x"), py::arg("y")); - m.def("kw_func2", &kw_func, py::arg("x") = 100, py::arg("y") = 200); + // test_named_arguments + m.def("kw_func0", kw_func); + m.def("kw_func1", kw_func, py::arg("x"), py::arg("y")); + m.def("kw_func2", kw_func, py::arg("x") = 100, py::arg("y") = 200); m.def("kw_func3", [](const char *) { }, py::arg("data") = std::string("Hello world!")); /* A fancier default argument */ - std::vector<int> list; - list.push_back(13); - list.push_back(17); - m.def("kw_func4", &kw_func4, py::arg("myList") = list); - - m.def("args_function", &args_function); - m.def("args_kwargs_function", &args_kwargs_function); - - m.def("kw_func_udl", &kw_func, "x"_a, "y"_a=300); - m.def("kw_func_udl_z", &kw_func, "x"_a, "y"_a=0); + std::vector<int> list{{13, 17}}; + m.def("kw_func4", [](const std::vector<int> &entries) { + std::string ret = "{"; + for (int i : entries) + ret += std::to_string(i) + " "; + ret.back() = '}'; + return ret; + }, py::arg("myList") = list); + + m.def("kw_func_udl", kw_func, "x"_a, "y"_a=300); + m.def("kw_func_udl_z", kw_func, "x"_a, "y"_a=0); + + // test_args_and_kwargs + m.def("args_function", [](py::args args) -> py::tuple { return args; }); + m.def("args_kwargs_function", [](py::args args, py::kwargs kwargs) { + return py::make_tuple(args, kwargs); + }); + + // test_mixed_args_and_kwargs + m.def("mixed_plus_args", [](int i, double j, py::args args) { + return py::make_tuple(i, j, args); + }); + m.def("mixed_plus_kwargs", [](int i, double j, py::kwargs kwargs) { + return py::make_tuple(i, j, kwargs); + }); + auto mixed_plus_both = [](int i, double j, py::args args, py::kwargs kwargs) { + return py::make_tuple(i, j, args, kwargs); + }; + m.def("mixed_plus_args_kwargs", mixed_plus_both); + + m.def("mixed_plus_args_kwargs_defaults", mixed_plus_both, + py::arg("i") = 1, py::arg("j") = 3.14159); + // pybind11 won't allow these to be bound: args and kwargs, if present, must be at the end. + // Uncomment these to test that the static_assert is indeed working: +// m.def("bad_args1", [](py::args, int) {}); +// m.def("bad_args2", [](py::kwargs, int) {}); +// m.def("bad_args3", [](py::kwargs, py::args) {}); +// m.def("bad_args4", [](py::args, int, py::kwargs) {}); +// m.def("bad_args5", [](py::args, py::kwargs, int) {}); +// m.def("bad_args6", [](py::args, py::args) {}); +// m.def("bad_args7", [](py::kwargs, py::kwargs) {}); + + // test_function_signatures (along with most of the above) + struct KWClass { void foo(int, float) {} }; py::class_<KWClass>(m, "KWClass") .def("foo0", &KWClass::foo) .def("foo1", &KWClass::foo, "x"_a, "y"_a); - - m.def("mixed_plus_args", &mixed_plus_args); - m.def("mixed_plus_kwargs", &mixed_plus_kwargs); - m.def("mixed_plus_args_kwargs", &mixed_plus_args_kwargs); - - m.def("mixed_plus_args_kwargs_defaults", &mixed_plus_args_kwargs, - py::arg("i") = 1, py::arg("j") = 3.14159); - - // Uncomment these to test that the static_assert is indeed working: -// m.def("bad_args1", &bad_args1); -// m.def("bad_args2", &bad_args2); -// m.def("bad_args3", &bad_args3); -// m.def("bad_args4", &bad_args4); -// m.def("bad_args5", &bad_args5); -// m.def("bad_args6", &bad_args6); -// m.def("bad_args7", &bad_args7); -}); +} diff --git a/ext/pybind11/tests/test_kwargs_and_defaults.py b/ext/pybind11/tests/test_kwargs_and_defaults.py index 90f8489ed..733fe8593 100644 --- a/ext/pybind11/tests/test_kwargs_and_defaults.py +++ b/ext/pybind11/tests/test_kwargs_and_defaults.py @@ -1,65 +1,64 @@ import pytest -from pybind11_tests import (kw_func0, kw_func1, kw_func2, kw_func3, kw_func4, args_function, - args_kwargs_function, kw_func_udl, kw_func_udl_z, KWClass) +from pybind11_tests import kwargs_and_defaults as m def test_function_signatures(doc): - assert doc(kw_func0) == "kw_func0(arg0: int, arg1: int) -> str" - assert doc(kw_func1) == "kw_func1(x: int, y: int) -> str" - assert doc(kw_func2) == "kw_func2(x: int=100, y: int=200) -> str" - assert doc(kw_func3) == "kw_func3(data: str='Hello world!') -> None" - assert doc(kw_func4) == "kw_func4(myList: List[int]=[13, 17]) -> str" - assert doc(kw_func_udl) == "kw_func_udl(x: int, y: int=300) -> str" - assert doc(kw_func_udl_z) == "kw_func_udl_z(x: int, y: int=0) -> str" - assert doc(args_function) == "args_function(*args) -> tuple" - assert doc(args_kwargs_function) == "args_kwargs_function(*args, **kwargs) -> tuple" - assert doc(KWClass.foo0) == "foo0(self: m.KWClass, arg0: int, arg1: float) -> None" - assert doc(KWClass.foo1) == "foo1(self: m.KWClass, x: int, y: float) -> None" + assert doc(m.kw_func0) == "kw_func0(arg0: int, arg1: int) -> str" + assert doc(m.kw_func1) == "kw_func1(x: int, y: int) -> str" + assert doc(m.kw_func2) == "kw_func2(x: int=100, y: int=200) -> str" + assert doc(m.kw_func3) == "kw_func3(data: str='Hello world!') -> None" + assert doc(m.kw_func4) == "kw_func4(myList: List[int]=[13, 17]) -> str" + assert doc(m.kw_func_udl) == "kw_func_udl(x: int, y: int=300) -> str" + assert doc(m.kw_func_udl_z) == "kw_func_udl_z(x: int, y: int=0) -> str" + assert doc(m.args_function) == "args_function(*args) -> tuple" + assert doc(m.args_kwargs_function) == "args_kwargs_function(*args, **kwargs) -> tuple" + assert doc(m.KWClass.foo0) == \ + "foo0(self: m.kwargs_and_defaults.KWClass, arg0: int, arg1: float) -> None" + assert doc(m.KWClass.foo1) == \ + "foo1(self: m.kwargs_and_defaults.KWClass, x: int, y: float) -> None" def test_named_arguments(msg): - assert kw_func0(5, 10) == "x=5, y=10" + assert m.kw_func0(5, 10) == "x=5, y=10" - assert kw_func1(5, 10) == "x=5, y=10" - assert kw_func1(5, y=10) == "x=5, y=10" - assert kw_func1(y=10, x=5) == "x=5, y=10" + assert m.kw_func1(5, 10) == "x=5, y=10" + assert m.kw_func1(5, y=10) == "x=5, y=10" + assert m.kw_func1(y=10, x=5) == "x=5, y=10" - assert kw_func2() == "x=100, y=200" - assert kw_func2(5) == "x=5, y=200" - assert kw_func2(x=5) == "x=5, y=200" - assert kw_func2(y=10) == "x=100, y=10" - assert kw_func2(5, 10) == "x=5, y=10" - assert kw_func2(x=5, y=10) == "x=5, y=10" + assert m.kw_func2() == "x=100, y=200" + assert m.kw_func2(5) == "x=5, y=200" + assert m.kw_func2(x=5) == "x=5, y=200" + assert m.kw_func2(y=10) == "x=100, y=10" + assert m.kw_func2(5, 10) == "x=5, y=10" + assert m.kw_func2(x=5, y=10) == "x=5, y=10" with pytest.raises(TypeError) as excinfo: # noinspection PyArgumentList - kw_func2(x=5, y=10, z=12) + m.kw_func2(x=5, y=10, z=12) assert excinfo.match( r'(?s)^kw_func2\(\): incompatible.*Invoked with: kwargs: ((x=5|y=10|z=12)(, |$))' + '{3}$') - assert kw_func4() == "{13 17}" - assert kw_func4(myList=[1, 2, 3]) == "{1 2 3}" + assert m.kw_func4() == "{13 17}" + assert m.kw_func4(myList=[1, 2, 3]) == "{1 2 3}" - assert kw_func_udl(x=5, y=10) == "x=5, y=10" - assert kw_func_udl_z(x=5) == "x=5, y=0" + assert m.kw_func_udl(x=5, y=10) == "x=5, y=10" + assert m.kw_func_udl_z(x=5) == "x=5, y=0" def test_arg_and_kwargs(): args = 'arg1_value', 'arg2_value', 3 - assert args_function(*args) == args + assert m.args_function(*args) == args args = 'a1', 'a2' kwargs = dict(arg3='a3', arg4=4) - assert args_kwargs_function(*args, **kwargs) == (args, kwargs) + assert m.args_kwargs_function(*args, **kwargs) == (args, kwargs) def test_mixed_args_and_kwargs(msg): - from pybind11_tests import (mixed_plus_args, mixed_plus_kwargs, mixed_plus_args_kwargs, - mixed_plus_args_kwargs_defaults) - mpa = mixed_plus_args - mpk = mixed_plus_kwargs - mpak = mixed_plus_args_kwargs - mpakd = mixed_plus_args_kwargs_defaults + mpa = m.mixed_plus_args + mpk = m.mixed_plus_kwargs + mpak = m.mixed_plus_args_kwargs + mpakd = m.mixed_plus_args_kwargs_defaults assert mpa(1, 2.5, 4, 99.5, None) == (1, 2.5, (4, 99.5, None)) assert mpa(1, 2.5) == (1, 2.5, ()) diff --git a/ext/pybind11/tests/test_local_bindings.cpp b/ext/pybind11/tests/test_local_bindings.cpp new file mode 100644 index 000000000..97c02dbeb --- /dev/null +++ b/ext/pybind11/tests/test_local_bindings.cpp @@ -0,0 +1,101 @@ +/* + tests/test_local_bindings.cpp -- tests the py::module_local class feature which makes a class + binding local to the module in which it is defined. + + Copyright (c) 2017 Jason Rhinelander <jason@imaginary.ca> + + All rights reserved. Use of this source code is governed by a + BSD-style license that can be found in the LICENSE file. +*/ + +#include "pybind11_tests.h" +#include "local_bindings.h" +#include <pybind11/stl.h> +#include <pybind11/stl_bind.h> +#include <numeric> + +TEST_SUBMODULE(local_bindings, m) { + // test_load_external + m.def("load_external1", [](ExternalType1 &e) { return e.i; }); + m.def("load_external2", [](ExternalType2 &e) { return e.i; }); + + // test_local_bindings + // Register a class with py::module_local: + bind_local<LocalType, -1>(m, "LocalType", py::module_local()) + .def("get3", [](LocalType &t) { return t.i + 3; }) + ; + + m.def("local_value", [](LocalType &l) { return l.i; }); + + // test_nonlocal_failure + // The main pybind11 test module is loaded first, so this registration will succeed (the second + // one, in pybind11_cross_module_tests.cpp, is designed to fail): + bind_local<NonLocalType, 0>(m, "NonLocalType") + .def(py::init<int>()) + .def("get", [](LocalType &i) { return i.i; }) + ; + + // test_duplicate_local + // py::module_local declarations should be visible across compilation units that get linked together; + // this tries to register a duplicate local. It depends on a definition in test_class.cpp and + // should raise a runtime error from the duplicate definition attempt. If test_class isn't + // available it *also* throws a runtime error (with "test_class not enabled" as value). + m.def("register_local_external", [m]() { + auto main = py::module::import("pybind11_tests"); + if (py::hasattr(main, "class_")) { + bind_local<LocalExternal, 7>(m, "LocalExternal", py::module_local()); + } + else throw std::runtime_error("test_class not enabled"); + }); + + // test_stl_bind_local + // stl_bind.h binders defaults to py::module_local if the types are local or converting: + py::bind_vector<LocalVec>(m, "LocalVec"); + py::bind_map<LocalMap>(m, "LocalMap"); + // and global if the type (or one of the types, for the map) is global: + py::bind_vector<NonLocalVec>(m, "NonLocalVec"); + py::bind_map<NonLocalMap>(m, "NonLocalMap"); + + // test_stl_bind_global + // They can, however, be overridden to global using `py::module_local(false)`: + bind_local<NonLocal2, 10>(m, "NonLocal2"); + py::bind_vector<LocalVec2>(m, "LocalVec2", py::module_local()); + py::bind_map<NonLocalMap2>(m, "NonLocalMap2", py::module_local(false)); + + // test_mixed_local_global + // We try this both with the global type registered first and vice versa (the order shouldn't + // matter). + m.def("register_mixed_global", [m]() { + bind_local<MixedGlobalLocal, 100>(m, "MixedGlobalLocal", py::module_local(false)); + }); + m.def("register_mixed_local", [m]() { + bind_local<MixedLocalGlobal, 1000>(m, "MixedLocalGlobal", py::module_local()); + }); + m.def("get_mixed_gl", [](int i) { return MixedGlobalLocal(i); }); + m.def("get_mixed_lg", [](int i) { return MixedLocalGlobal(i); }); + + // test_internal_locals_differ + m.def("local_cpp_types_addr", []() { return (uintptr_t) &py::detail::registered_local_types_cpp(); }); + + // test_stl_caster_vs_stl_bind + m.def("load_vector_via_caster", [](std::vector<int> v) { + return std::accumulate(v.begin(), v.end(), 0); + }); + + // test_cross_module_calls + m.def("return_self", [](LocalVec *v) { return v; }); + m.def("return_copy", [](const LocalVec &v) { return LocalVec(v); }); + + class Cat : public pets::Pet { public: Cat(std::string name) : Pet(name) {}; }; + py::class_<pets::Pet>(m, "Pet", py::module_local()) + .def("get_name", &pets::Pet::name); + // Binding for local extending class: + py::class_<Cat, pets::Pet>(m, "Cat") + .def(py::init<std::string>()); + m.def("pet_name", [](pets::Pet &p) { return p.name(); }); + + py::class_<MixGL>(m, "MixGL").def(py::init<int>()); + m.def("get_gl_value", [](MixGL &o) { return o.i + 10; }); + + py::class_<MixGL2>(m, "MixGL2").def(py::init<int>()); +} diff --git a/ext/pybind11/tests/test_local_bindings.py b/ext/pybind11/tests/test_local_bindings.py new file mode 100644 index 000000000..b3dc3619c --- /dev/null +++ b/ext/pybind11/tests/test_local_bindings.py @@ -0,0 +1,226 @@ +import pytest + +from pybind11_tests import local_bindings as m + + +def test_load_external(): + """Load a `py::module_local` type that's only registered in an external module""" + import pybind11_cross_module_tests as cm + + assert m.load_external1(cm.ExternalType1(11)) == 11 + assert m.load_external2(cm.ExternalType2(22)) == 22 + + with pytest.raises(TypeError) as excinfo: + assert m.load_external2(cm.ExternalType1(21)) == 21 + assert "incompatible function arguments" in str(excinfo.value) + + with pytest.raises(TypeError) as excinfo: + assert m.load_external1(cm.ExternalType2(12)) == 12 + assert "incompatible function arguments" in str(excinfo.value) + + +def test_local_bindings(): + """Tests that duplicate `py::module_local` class bindings work across modules""" + + # Make sure we can load the second module with the conflicting (but local) definition: + import pybind11_cross_module_tests as cm + + i1 = m.LocalType(5) + assert i1.get() == 4 + assert i1.get3() == 8 + + i2 = cm.LocalType(10) + assert i2.get() == 11 + assert i2.get2() == 12 + + assert not hasattr(i1, 'get2') + assert not hasattr(i2, 'get3') + + # Loading within the local module + assert m.local_value(i1) == 5 + assert cm.local_value(i2) == 10 + + # Cross-module loading works as well (on failure, the type loader looks for + # external module-local converters): + assert m.local_value(i2) == 10 + assert cm.local_value(i1) == 5 + + +def test_nonlocal_failure(): + """Tests that attempting to register a non-local type in multiple modules fails""" + import pybind11_cross_module_tests as cm + + with pytest.raises(RuntimeError) as excinfo: + cm.register_nonlocal() + assert str(excinfo.value) == 'generic_type: type "NonLocalType" is already registered!' + + +def test_duplicate_local(): + """Tests expected failure when registering a class twice with py::local in the same module""" + with pytest.raises(RuntimeError) as excinfo: + m.register_local_external() + import pybind11_tests + assert str(excinfo.value) == ( + 'generic_type: type "LocalExternal" is already registered!' + if hasattr(pybind11_tests, 'class_') else 'test_class not enabled') + + +def test_stl_bind_local(): + import pybind11_cross_module_tests as cm + + v1, v2 = m.LocalVec(), cm.LocalVec() + v1.append(m.LocalType(1)) + v1.append(m.LocalType(2)) + v2.append(cm.LocalType(1)) + v2.append(cm.LocalType(2)) + + # Cross module value loading: + v1.append(cm.LocalType(3)) + v2.append(m.LocalType(3)) + + assert [i.get() for i in v1] == [0, 1, 2] + assert [i.get() for i in v2] == [2, 3, 4] + + v3, v4 = m.NonLocalVec(), cm.NonLocalVec2() + v3.append(m.NonLocalType(1)) + v3.append(m.NonLocalType(2)) + v4.append(m.NonLocal2(3)) + v4.append(m.NonLocal2(4)) + + assert [i.get() for i in v3] == [1, 2] + assert [i.get() for i in v4] == [13, 14] + + d1, d2 = m.LocalMap(), cm.LocalMap() + d1["a"] = v1[0] + d1["b"] = v1[1] + d2["c"] = v2[0] + d2["d"] = v2[1] + assert {i: d1[i].get() for i in d1} == {'a': 0, 'b': 1} + assert {i: d2[i].get() for i in d2} == {'c': 2, 'd': 3} + + +def test_stl_bind_global(): + import pybind11_cross_module_tests as cm + + with pytest.raises(RuntimeError) as excinfo: + cm.register_nonlocal_map() + assert str(excinfo.value) == 'generic_type: type "NonLocalMap" is already registered!' + + with pytest.raises(RuntimeError) as excinfo: + cm.register_nonlocal_vec() + assert str(excinfo.value) == 'generic_type: type "NonLocalVec" is already registered!' + + with pytest.raises(RuntimeError) as excinfo: + cm.register_nonlocal_map2() + assert str(excinfo.value) == 'generic_type: type "NonLocalMap2" is already registered!' + + +def test_mixed_local_global(): + """Local types take precedence over globally registered types: a module with a `module_local` + type can be registered even if the type is already registered globally. With the module, + casting will go to the local type; outside the module casting goes to the global type.""" + import pybind11_cross_module_tests as cm + m.register_mixed_global() + m.register_mixed_local() + + a = [] + a.append(m.MixedGlobalLocal(1)) + a.append(m.MixedLocalGlobal(2)) + a.append(m.get_mixed_gl(3)) + a.append(m.get_mixed_lg(4)) + + assert [x.get() for x in a] == [101, 1002, 103, 1004] + + cm.register_mixed_global_local() + cm.register_mixed_local_global() + a.append(m.MixedGlobalLocal(5)) + a.append(m.MixedLocalGlobal(6)) + a.append(cm.MixedGlobalLocal(7)) + a.append(cm.MixedLocalGlobal(8)) + a.append(m.get_mixed_gl(9)) + a.append(m.get_mixed_lg(10)) + a.append(cm.get_mixed_gl(11)) + a.append(cm.get_mixed_lg(12)) + + assert [x.get() for x in a] == \ + [101, 1002, 103, 1004, 105, 1006, 207, 2008, 109, 1010, 211, 2012] + + +def test_internal_locals_differ(): + """Makes sure the internal local type map differs across the two modules""" + import pybind11_cross_module_tests as cm + assert m.local_cpp_types_addr() != cm.local_cpp_types_addr() + + +def test_stl_caster_vs_stl_bind(msg): + """One module uses a generic vector caster from `<pybind11/stl.h>` while the other + exports `std::vector<int>` via `py:bind_vector` and `py::module_local`""" + import pybind11_cross_module_tests as cm + + v1 = cm.VectorInt([1, 2, 3]) + assert m.load_vector_via_caster(v1) == 6 + assert cm.load_vector_via_binding(v1) == 6 + + v2 = [1, 2, 3] + assert m.load_vector_via_caster(v2) == 6 + with pytest.raises(TypeError) as excinfo: + cm.load_vector_via_binding(v2) == 6 + assert msg(excinfo.value) == """ + load_vector_via_binding(): incompatible function arguments. The following argument types are supported: + 1. (arg0: pybind11_cross_module_tests.VectorInt) -> int + + Invoked with: [1, 2, 3] + """ # noqa: E501 line too long + + +def test_cross_module_calls(): + import pybind11_cross_module_tests as cm + + v1 = m.LocalVec() + v1.append(m.LocalType(1)) + v2 = cm.LocalVec() + v2.append(cm.LocalType(2)) + + # Returning the self pointer should get picked up as returning an existing + # instance (even when that instance is of a foreign, non-local type). + assert m.return_self(v1) is v1 + assert cm.return_self(v2) is v2 + assert m.return_self(v2) is v2 + assert cm.return_self(v1) is v1 + + assert m.LocalVec is not cm.LocalVec + # Returning a copy, on the other hand, always goes to the local type, + # regardless of where the source type came from. + assert type(m.return_copy(v1)) is m.LocalVec + assert type(m.return_copy(v2)) is m.LocalVec + assert type(cm.return_copy(v1)) is cm.LocalVec + assert type(cm.return_copy(v2)) is cm.LocalVec + + # Test the example given in the documentation (which also tests inheritance casting): + mycat = m.Cat("Fluffy") + mydog = cm.Dog("Rover") + assert mycat.get_name() == "Fluffy" + assert mydog.name() == "Rover" + assert m.Cat.__base__.__name__ == "Pet" + assert cm.Dog.__base__.__name__ == "Pet" + assert m.Cat.__base__ is not cm.Dog.__base__ + assert m.pet_name(mycat) == "Fluffy" + assert m.pet_name(mydog) == "Rover" + assert cm.pet_name(mycat) == "Fluffy" + assert cm.pet_name(mydog) == "Rover" + + assert m.MixGL is not cm.MixGL + a = m.MixGL(1) + b = cm.MixGL(2) + assert m.get_gl_value(a) == 11 + assert m.get_gl_value(b) == 12 + assert cm.get_gl_value(a) == 101 + assert cm.get_gl_value(b) == 102 + + c, d = m.MixGL2(3), cm.MixGL2(4) + with pytest.raises(TypeError) as excinfo: + m.get_gl_value(c) + assert "incompatible function arguments" in str(excinfo) + with pytest.raises(TypeError) as excinfo: + m.get_gl_value(d) + assert "incompatible function arguments" in str(excinfo) diff --git a/ext/pybind11/tests/test_methods_and_attributes.cpp b/ext/pybind11/tests/test_methods_and_attributes.cpp index b7b2edfd8..cd15869f4 100644 --- a/ext/pybind11/tests/test_methods_and_attributes.cpp +++ b/ext/pybind11/tests/test_methods_and_attributes.cpp @@ -26,39 +26,44 @@ public: void operator=(const ExampleMandA &e) { print_copy_assigned(this); value = e.value; } void operator=(ExampleMandA &&e) { print_move_assigned(this); value = e.value; } - void add1(ExampleMandA other) { value += other.value; } // passing by value - void add2(ExampleMandA &other) { value += other.value; } // passing by reference - void add3(const ExampleMandA &other) { value += other.value; } // passing by const reference - void add4(ExampleMandA *other) { value += other->value; } // passing by pointer - void add5(const ExampleMandA *other) { value += other->value; } // passing by const pointer - - void add6(int other) { value += other; } // passing by value - void add7(int &other) { value += other; } // passing by reference - void add8(const int &other) { value += other; } // passing by const reference - void add9(int *other) { value += *other; } // passing by pointer - void add10(const int *other) { value += *other; } // passing by const pointer - - ExampleMandA self1() { return *this; } // return by value - ExampleMandA &self2() { return *this; } // return by reference - const ExampleMandA &self3() { return *this; } // return by const reference - ExampleMandA *self4() { return this; } // return by pointer - const ExampleMandA *self5() { return this; } // return by const pointer - - int internal1() { return value; } // return by value - int &internal2() { return value; } // return by reference - const int &internal3() { return value; } // return by const reference - int *internal4() { return &value; } // return by pointer - const int *internal5() { return &value; } // return by const pointer - + void add1(ExampleMandA other) { value += other.value; } // passing by value + void add2(ExampleMandA &other) { value += other.value; } // passing by reference + void add3(const ExampleMandA &other) { value += other.value; } // passing by const reference + void add4(ExampleMandA *other) { value += other->value; } // passing by pointer + void add5(const ExampleMandA *other) { value += other->value; } // passing by const pointer + + void add6(int other) { value += other; } // passing by value + void add7(int &other) { value += other; } // passing by reference + void add8(const int &other) { value += other; } // passing by const reference + void add9(int *other) { value += *other; } // passing by pointer + void add10(const int *other) { value += *other; } // passing by const pointer + + ExampleMandA self1() { return *this; } // return by value + ExampleMandA &self2() { return *this; } // return by reference + const ExampleMandA &self3() { return *this; } // return by const reference + ExampleMandA *self4() { return this; } // return by pointer + const ExampleMandA *self5() { return this; } // return by const pointer + + int internal1() { return value; } // return by value + int &internal2() { return value; } // return by reference + const int &internal3() { return value; } // return by const reference + int *internal4() { return &value; } // return by pointer + const int *internal5() { return &value; } // return by const pointer + + py::str overloaded() { return "()"; } + py::str overloaded(int) { return "(int)"; } py::str overloaded(int, float) { return "(int, float)"; } py::str overloaded(float, int) { return "(float, int)"; } py::str overloaded(int, int) { return "(int, int)"; } py::str overloaded(float, float) { return "(float, float)"; } + py::str overloaded(int) const { return "(int) const"; } py::str overloaded(int, float) const { return "(int, float) const"; } py::str overloaded(float, int) const { return "(float, int) const"; } py::str overloaded(int, int) const { return "(int, int) const"; } py::str overloaded(float, float) const { return "(float, float) const"; } + static py::str overloaded(float) { return "static float"; } + int value = 0; }; @@ -72,34 +77,28 @@ struct TestProperties { static int static_get() { return static_value; } static void static_set(int v) { static_value = v; } }; - int TestProperties::static_value = 1; -struct SimpleValue { int value = 1; }; - -struct TestPropRVP { - SimpleValue v1; - SimpleValue v2; - static SimpleValue sv1; - static SimpleValue sv2; - - const SimpleValue &get1() const { return v1; } - const SimpleValue &get2() const { return v2; } - SimpleValue get_rvalue() const { return v2; } - void set1(int v) { v1.value = v; } - void set2(int v) { v2.value = v; } +struct TestPropertiesOverride : TestProperties { + int value = 99; + static int static_value; }; +int TestPropertiesOverride::static_value = 99; -SimpleValue TestPropRVP::sv1{}; -SimpleValue TestPropRVP::sv2{}; - -class DynamicClass { -public: - DynamicClass() { print_default_created(this); } - ~DynamicClass() { print_destroyed(this); } +struct TestPropRVP { + UserType v1{1}; + UserType v2{1}; + static UserType sv1; + static UserType sv2; + + const UserType &get1() const { return v1; } + const UserType &get2() const { return v2; } + UserType get_rvalue() const { return v2; } + void set1(int v) { v1.set(v); } + void set2(int v) { v2.set(v); } }; - -class CppDerivedDynamicClass : public DynamicClass { }; +UserType TestPropRVP::sv1(1); +UserType TestPropRVP::sv2(1); // py::arg/py::arg_v testing: these arguments just record their argument when invoked class ArgInspector1 { public: std::string arg = "(default arg inspector 1)"; }; @@ -145,17 +144,68 @@ public: } static handle cast(const ArgAlwaysConverts &, return_value_policy, handle) { - return py::none(); + return py::none().release(); } }; }} -/// Issue/PR #648: bad arg default debugging output -class NotRegistered {}; +// test_custom_caster_destruction +class DestructionTester { +public: + DestructionTester() { print_default_created(this); } + ~DestructionTester() { print_destroyed(this); } + DestructionTester(const DestructionTester &) { print_copy_created(this); } + DestructionTester(DestructionTester &&) { print_move_created(this); } + DestructionTester &operator=(const DestructionTester &) { print_copy_assigned(this); return *this; } + DestructionTester &operator=(DestructionTester &&) { print_move_assigned(this); return *this; } +}; +namespace pybind11 { namespace detail { +template <> struct type_caster<DestructionTester> { + PYBIND11_TYPE_CASTER(DestructionTester, _("DestructionTester")); + bool load(handle, bool) { return true; } -test_initializer methods_and_attributes([](py::module &m) { - py::class_<ExampleMandA>(m, "ExampleMandA") - .def(py::init<>()) + static handle cast(const DestructionTester &, return_value_policy, handle) { + return py::bool_(true).release(); + } +}; +}} + +// Test None-allowed py::arg argument policy +class NoneTester { public: int answer = 42; }; +int none1(const NoneTester &obj) { return obj.answer; } +int none2(NoneTester *obj) { return obj ? obj->answer : -1; } +int none3(std::shared_ptr<NoneTester> &obj) { return obj ? obj->answer : -1; } +int none4(std::shared_ptr<NoneTester> *obj) { return obj && *obj ? (*obj)->answer : -1; } +int none5(std::shared_ptr<NoneTester> obj) { return obj ? obj->answer : -1; } + +struct StrIssue { + int val = -1; + + StrIssue() = default; + StrIssue(int i) : val{i} {} +}; + +// Issues #854, #910: incompatible function args when member function/pointer is in unregistered base class +class UnregisteredBase { +public: + void do_nothing() const {} + void increase_value() { rw_value++; ro_value += 0.25; } + void set_int(int v) { rw_value = v; } + int get_int() const { return rw_value; } + double get_double() const { return ro_value; } + int rw_value = 42; + double ro_value = 1.25; +}; +class RegisteredDerived : public UnregisteredBase { +public: + using UnregisteredBase::UnregisteredBase; + double sum() const { return rw_value + ro_value; } +}; + +TEST_SUBMODULE(methods_and_attributes, m) { + // test_methods_and_attributes + py::class_<ExampleMandA> emna(m, "ExampleMandA"); + emna.def(py::init<>()) .def(py::init<int>()) .def(py::init<const ExampleMandA&>()) .def("add1", &ExampleMandA::add1) @@ -179,29 +229,52 @@ test_initializer methods_and_attributes([](py::module &m) { .def("internal4", &ExampleMandA::internal4) .def("internal5", &ExampleMandA::internal5) #if defined(PYBIND11_OVERLOAD_CAST) + .def("overloaded", py::overload_cast<>(&ExampleMandA::overloaded)) + .def("overloaded", py::overload_cast<int>(&ExampleMandA::overloaded)) .def("overloaded", py::overload_cast<int, float>(&ExampleMandA::overloaded)) .def("overloaded", py::overload_cast<float, int>(&ExampleMandA::overloaded)) .def("overloaded", py::overload_cast<int, int>(&ExampleMandA::overloaded)) .def("overloaded", py::overload_cast<float, float>(&ExampleMandA::overloaded)) .def("overloaded_float", py::overload_cast<float, float>(&ExampleMandA::overloaded)) + .def("overloaded_const", py::overload_cast<int >(&ExampleMandA::overloaded, py::const_)) .def("overloaded_const", py::overload_cast<int, float>(&ExampleMandA::overloaded, py::const_)) .def("overloaded_const", py::overload_cast<float, int>(&ExampleMandA::overloaded, py::const_)) .def("overloaded_const", py::overload_cast<int, int>(&ExampleMandA::overloaded, py::const_)) .def("overloaded_const", py::overload_cast<float, float>(&ExampleMandA::overloaded, py::const_)) #else + .def("overloaded", static_cast<py::str (ExampleMandA::*)()>(&ExampleMandA::overloaded)) + .def("overloaded", static_cast<py::str (ExampleMandA::*)(int)>(&ExampleMandA::overloaded)) .def("overloaded", static_cast<py::str (ExampleMandA::*)(int, float)>(&ExampleMandA::overloaded)) .def("overloaded", static_cast<py::str (ExampleMandA::*)(float, int)>(&ExampleMandA::overloaded)) .def("overloaded", static_cast<py::str (ExampleMandA::*)(int, int)>(&ExampleMandA::overloaded)) .def("overloaded", static_cast<py::str (ExampleMandA::*)(float, float)>(&ExampleMandA::overloaded)) .def("overloaded_float", static_cast<py::str (ExampleMandA::*)(float, float)>(&ExampleMandA::overloaded)) + .def("overloaded_const", static_cast<py::str (ExampleMandA::*)(int ) const>(&ExampleMandA::overloaded)) .def("overloaded_const", static_cast<py::str (ExampleMandA::*)(int, float) const>(&ExampleMandA::overloaded)) .def("overloaded_const", static_cast<py::str (ExampleMandA::*)(float, int) const>(&ExampleMandA::overloaded)) .def("overloaded_const", static_cast<py::str (ExampleMandA::*)(int, int) const>(&ExampleMandA::overloaded)) .def("overloaded_const", static_cast<py::str (ExampleMandA::*)(float, float) const>(&ExampleMandA::overloaded)) #endif + // test_no_mixed_overloads + // Raise error if trying to mix static/non-static overloads on the same name: + .def_static("add_mixed_overloads1", []() { + auto emna = py::reinterpret_borrow<py::class_<ExampleMandA>>(py::module::import("pybind11_tests.methods_and_attributes").attr("ExampleMandA")); + emna.def ("overload_mixed1", static_cast<py::str (ExampleMandA::*)(int, int)>(&ExampleMandA::overloaded)) + .def_static("overload_mixed1", static_cast<py::str ( *)(float )>(&ExampleMandA::overloaded)); + }) + .def_static("add_mixed_overloads2", []() { + auto emna = py::reinterpret_borrow<py::class_<ExampleMandA>>(py::module::import("pybind11_tests.methods_and_attributes").attr("ExampleMandA")); + emna.def_static("overload_mixed2", static_cast<py::str ( *)(float )>(&ExampleMandA::overloaded)) + .def ("overload_mixed2", static_cast<py::str (ExampleMandA::*)(int, int)>(&ExampleMandA::overloaded)); + }) .def("__str__", &ExampleMandA::toString) .def_readwrite("value", &ExampleMandA::value); + // test_copy_method + // Issue #443: can't call copied methods in Python 3 + emna.attr("add2b") = emna.attr("add2"); + + // test_properties, test_static_properties, test_static_cls py::class_<TestProperties>(m, "TestProperties") .def(py::init<>()) .def_readonly("def_readonly", &TestProperties::value) @@ -219,15 +292,18 @@ test_initializer methods_and_attributes([](py::module &m) { [](py::object cls) { return cls; }, [](py::object cls, py::function f) { f(cls); }); - py::class_<SimpleValue>(m, "SimpleValue") - .def_readwrite("value", &SimpleValue::value); + py::class_<TestPropertiesOverride, TestProperties>(m, "TestPropertiesOverride") + .def(py::init<>()) + .def_readonly("def_readonly", &TestPropertiesOverride::value) + .def_readonly_static("def_readonly_static", &TestPropertiesOverride::static_value); - auto static_get1 = [](py::object) -> const SimpleValue & { return TestPropRVP::sv1; }; - auto static_get2 = [](py::object) -> const SimpleValue & { return TestPropRVP::sv2; }; - auto static_set1 = [](py::object, int v) { TestPropRVP::sv1.value = v; }; - auto static_set2 = [](py::object, int v) { TestPropRVP::sv2.value = v; }; + auto static_get1 = [](py::object) -> const UserType & { return TestPropRVP::sv1; }; + auto static_get2 = [](py::object) -> const UserType & { return TestPropRVP::sv2; }; + auto static_set1 = [](py::object, int v) { TestPropRVP::sv1.set(v); }; + auto static_set2 = [](py::object, int v) { TestPropRVP::sv2.set(v); }; auto rvp_copy = py::return_value_policy::copy; + // test_property_return_value_policies py::class_<TestPropRVP>(m, "TestPropRVP") .def(py::init<>()) .def_property_readonly("ro_ref", &TestPropRVP::get1) @@ -242,21 +318,32 @@ test_initializer methods_and_attributes([](py::module &m) { .def_property_static("static_rw_ref", static_get1, static_set1) .def_property_static("static_rw_copy", static_get2, static_set2, rvp_copy) .def_property_static("static_rw_func", py::cpp_function(static_get2, rvp_copy), static_set2) + // test_property_rvalue_policy .def_property_readonly("rvalue", &TestPropRVP::get_rvalue) - .def_property_readonly_static("static_rvalue", [](py::object) { return SimpleValue(); }); + .def_property_readonly_static("static_rvalue", [](py::object) { return UserType(1); }); + // test_metaclass_override struct MetaclassOverride { }; py::class_<MetaclassOverride>(m, "MetaclassOverride", py::metaclass((PyObject *) &PyType_Type)) .def_property_readonly_static("readonly", [](py::object) { return 1; }); #if !defined(PYPY_VERSION) + // test_dynamic_attributes + class DynamicClass { + public: + DynamicClass() { print_default_created(this); } + ~DynamicClass() { print_destroyed(this); } + }; py::class_<DynamicClass>(m, "DynamicClass", py::dynamic_attr()) .def(py::init()); + class CppDerivedDynamicClass : public DynamicClass { }; py::class_<CppDerivedDynamicClass, DynamicClass>(m, "CppDerivedDynamicClass") .def(py::init()); #endif + // test_noconvert_args + // // Test converting. The ArgAlwaysConverts is just there to make the first no-conversion pass // fail so that our call always ends up happening via the second dispatch (the one that allows // some conversion). @@ -279,19 +366,81 @@ test_initializer methods_and_attributes([](py::module &m) { m.def("floats_preferred", [](double f) { return 0.5 * f; }, py::arg("f")); m.def("floats_only", [](double f) { return 0.5 * f; }, py::arg("f").noconvert()); + m.def("ints_preferred", [](int i) { return i / 2; }, py::arg("i")); + m.def("ints_only", [](int i) { return i / 2; }, py::arg("i").noconvert()); - /// Issue/PR #648: bad arg default debugging output + // test_bad_arg_default + // Issue/PR #648: bad arg default debugging output #if !defined(NDEBUG) m.attr("debug_enabled") = true; #else m.attr("debug_enabled") = false; #endif m.def("bad_arg_def_named", []{ - auto m = py::module::import("pybind11_tests.issues"); - m.def("should_fail", [](int, NotRegistered) {}, py::arg(), py::arg("a") = NotRegistered()); + auto m = py::module::import("pybind11_tests"); + m.def("should_fail", [](int, UnregisteredType) {}, py::arg(), py::arg("a") = UnregisteredType()); }); m.def("bad_arg_def_unnamed", []{ - auto m = py::module::import("pybind11_tests.issues"); - m.def("should_fail", [](int, NotRegistered) {}, py::arg(), py::arg() = NotRegistered()); + auto m = py::module::import("pybind11_tests"); + m.def("should_fail", [](int, UnregisteredType) {}, py::arg(), py::arg() = UnregisteredType()); }); -}); + + // test_accepts_none + py::class_<NoneTester, std::shared_ptr<NoneTester>>(m, "NoneTester") + .def(py::init<>()); + m.def("no_none1", &none1, py::arg().none(false)); + m.def("no_none2", &none2, py::arg().none(false)); + m.def("no_none3", &none3, py::arg().none(false)); + m.def("no_none4", &none4, py::arg().none(false)); + m.def("no_none5", &none5, py::arg().none(false)); + m.def("ok_none1", &none1); + m.def("ok_none2", &none2, py::arg().none(true)); + m.def("ok_none3", &none3); + m.def("ok_none4", &none4, py::arg().none(true)); + m.def("ok_none5", &none5); + + // test_str_issue + // Issue #283: __str__ called on uninitialized instance when constructor arguments invalid + py::class_<StrIssue>(m, "StrIssue") + .def(py::init<int>()) + .def(py::init<>()) + .def("__str__", [](const StrIssue &si) { + return "StrIssue[" + std::to_string(si.val) + "]"; } + ); + + // test_unregistered_base_implementations + // + // Issues #854/910: incompatible function args when member function/pointer is in unregistered + // base class The methods and member pointers below actually resolve to members/pointers in + // UnregisteredBase; before this test/fix they would be registered via lambda with a first + // argument of an unregistered type, and thus uncallable. + py::class_<RegisteredDerived>(m, "RegisteredDerived") + .def(py::init<>()) + .def("do_nothing", &RegisteredDerived::do_nothing) + .def("increase_value", &RegisteredDerived::increase_value) + .def_readwrite("rw_value", &RegisteredDerived::rw_value) + .def_readonly("ro_value", &RegisteredDerived::ro_value) + // These should trigger a static_assert if uncommented + //.def_readwrite("fails", &UserType::value) // should trigger a static_assert if uncommented + //.def_readonly("fails", &UserType::value) // should trigger a static_assert if uncommented + .def_property("rw_value_prop", &RegisteredDerived::get_int, &RegisteredDerived::set_int) + .def_property_readonly("ro_value_prop", &RegisteredDerived::get_double) + // This one is in the registered class: + .def("sum", &RegisteredDerived::sum) + ; + + using Adapted = decltype(py::method_adaptor<RegisteredDerived>(&RegisteredDerived::do_nothing)); + static_assert(std::is_same<Adapted, void (RegisteredDerived::*)() const>::value, ""); + + // test_custom_caster_destruction + // Test that `take_ownership` works on types with a custom type caster when given a pointer + + // default policy: don't take ownership: + m.def("custom_caster_no_destroy", []() { static auto *dt = new DestructionTester(); return dt; }); + + m.def("custom_caster_destroy", []() { return new DestructionTester(); }, + py::return_value_policy::take_ownership); // Takes ownership: destroy when finished + m.def("custom_caster_destroy_const", []() -> const DestructionTester * { return new DestructionTester(); }, + py::return_value_policy::take_ownership); // Likewise (const doesn't inhibit destruction) + m.def("destruction_tester_cstats", &ConstructorStats::get<DestructionTester>, py::return_value_policy::reference); +} diff --git a/ext/pybind11/tests/test_methods_and_attributes.py b/ext/pybind11/tests/test_methods_and_attributes.py index f185ac26d..9fd9cb75c 100644 --- a/ext/pybind11/tests/test_methods_and_attributes.py +++ b/ext/pybind11/tests/test_methods_and_attributes.py @@ -1,10 +1,11 @@ import pytest -from pybind11_tests import ExampleMandA, ConstructorStats +from pybind11_tests import methods_and_attributes as m +from pybind11_tests import ConstructorStats def test_methods_and_attributes(): - instance1 = ExampleMandA() - instance2 = ExampleMandA(32) + instance1 = m.ExampleMandA() + instance2 = m.ExampleMandA(32) instance1.add1(instance2) instance1.add2(instance2) @@ -31,10 +32,13 @@ def test_methods_and_attributes(): assert instance1.internal4() == 320 assert instance1.internal5() == 320 + assert instance1.overloaded() == "()" + assert instance1.overloaded(0) == "(int)" assert instance1.overloaded(1, 1.0) == "(int, float)" assert instance1.overloaded(2.0, 2) == "(float, int)" assert instance1.overloaded(3, 3) == "(int, int)" assert instance1.overloaded(4., 4.) == "(float, float)" + assert instance1.overloaded_const(-3) == "(int) const" assert instance1.overloaded_const(5, 5.0) == "(int, float) const" assert instance1.overloaded_const(6.0, 6) == "(float, int) const" assert instance1.overloaded_const(7, 7) == "(int, int) const" @@ -48,7 +52,7 @@ def test_methods_and_attributes(): instance1.value = 100 assert str(instance1) == "ExampleMandA[value=100]" - cstats = ConstructorStats.get(ExampleMandA) + cstats = ConstructorStats.get(m.ExampleMandA) assert cstats.alive() == 2 del instance1, instance2 assert cstats.alive() == 0 @@ -60,10 +64,25 @@ def test_methods_and_attributes(): assert cstats.move_assignments == 0 -def test_properties(): - from pybind11_tests import TestProperties +def test_copy_method(): + """Issue #443: calling copied methods fails in Python 3""" + + m.ExampleMandA.add2c = m.ExampleMandA.add2 + m.ExampleMandA.add2d = m.ExampleMandA.add2b + a = m.ExampleMandA(123) + assert a.value == 123 + a.add2(m.ExampleMandA(-100)) + assert a.value == 23 + a.add2b(m.ExampleMandA(20)) + assert a.value == 43 + a.add2c(m.ExampleMandA(6)) + assert a.value == 49 + a.add2d(m.ExampleMandA(-7)) + assert a.value == 42 - instance = TestProperties() + +def test_properties(): + instance = m.TestProperties() assert instance.def_readonly == 1 with pytest.raises(AttributeError): @@ -81,75 +100,96 @@ def test_properties(): def test_static_properties(): - from pybind11_tests import TestProperties as Type - - assert Type.def_readonly_static == 1 + assert m.TestProperties.def_readonly_static == 1 with pytest.raises(AttributeError) as excinfo: - Type.def_readonly_static = 2 + m.TestProperties.def_readonly_static = 2 assert "can't set attribute" in str(excinfo) - Type.def_readwrite_static = 2 - assert Type.def_readwrite_static == 2 + m.TestProperties.def_readwrite_static = 2 + assert m.TestProperties.def_readwrite_static == 2 - assert Type.def_property_readonly_static == 2 + assert m.TestProperties.def_property_readonly_static == 2 with pytest.raises(AttributeError) as excinfo: - Type.def_property_readonly_static = 3 + m.TestProperties.def_property_readonly_static = 3 assert "can't set attribute" in str(excinfo) - Type.def_property_static = 3 - assert Type.def_property_static == 3 + m.TestProperties.def_property_static = 3 + assert m.TestProperties.def_property_static == 3 # Static property read and write via instance - instance = Type() + instance = m.TestProperties() - Type.def_readwrite_static = 0 - assert Type.def_readwrite_static == 0 + m.TestProperties.def_readwrite_static = 0 + assert m.TestProperties.def_readwrite_static == 0 assert instance.def_readwrite_static == 0 instance.def_readwrite_static = 2 - assert Type.def_readwrite_static == 2 + assert m.TestProperties.def_readwrite_static == 2 assert instance.def_readwrite_static == 2 + # It should be possible to override properties in derived classes + assert m.TestPropertiesOverride().def_readonly == 99 + assert m.TestPropertiesOverride.def_readonly_static == 99 + def test_static_cls(): """Static property getter and setters expect the type object as the their only argument""" - from pybind11_tests import TestProperties as Type - instance = Type() - assert Type.static_cls is Type - assert instance.static_cls is Type + instance = m.TestProperties() + assert m.TestProperties.static_cls is m.TestProperties + assert instance.static_cls is m.TestProperties def check_self(self): - assert self is Type + assert self is m.TestProperties - Type.static_cls = check_self + m.TestProperties.static_cls = check_self instance.static_cls = check_self def test_metaclass_override(): """Overriding pybind11's default metaclass changes the behavior of `static_property`""" - from pybind11_tests import MetaclassOverride - assert type(ExampleMandA).__name__ == "pybind11_type" - assert type(MetaclassOverride).__name__ == "type" + assert type(m.ExampleMandA).__name__ == "pybind11_type" + assert type(m.MetaclassOverride).__name__ == "type" - assert MetaclassOverride.readonly == 1 - assert type(MetaclassOverride.__dict__["readonly"]).__name__ == "pybind11_static_property" + assert m.MetaclassOverride.readonly == 1 + assert type(m.MetaclassOverride.__dict__["readonly"]).__name__ == "pybind11_static_property" # Regular `type` replaces the property instead of calling `__set__()` - MetaclassOverride.readonly = 2 - assert MetaclassOverride.readonly == 2 - assert isinstance(MetaclassOverride.__dict__["readonly"], int) + m.MetaclassOverride.readonly = 2 + assert m.MetaclassOverride.readonly == 2 + assert isinstance(m.MetaclassOverride.__dict__["readonly"], int) + + +def test_no_mixed_overloads(): + from pybind11_tests import debug_enabled + + with pytest.raises(RuntimeError) as excinfo: + m.ExampleMandA.add_mixed_overloads1() + assert (str(excinfo.value) == + "overloading a method with both static and instance methods is not supported; " + + ("compile in debug mode for more details" if not debug_enabled else + "error while attempting to bind static method ExampleMandA.overload_mixed1" + "(arg0: float) -> str") + ) + + with pytest.raises(RuntimeError) as excinfo: + m.ExampleMandA.add_mixed_overloads2() + assert (str(excinfo.value) == + "overloading a method with both static and instance methods is not supported; " + + ("compile in debug mode for more details" if not debug_enabled else + "error while attempting to bind instance method ExampleMandA.overload_mixed2" + "(self: pybind11_tests.methods_and_attributes.ExampleMandA, arg0: int, arg1: int)" + " -> str") + ) @pytest.mark.parametrize("access", ["ro", "rw", "static_ro", "static_rw"]) def test_property_return_value_policies(access): - from pybind11_tests import TestPropRVP - if not access.startswith("static"): - obj = TestPropRVP() + obj = m.TestPropRVP() else: - obj = TestPropRVP + obj = m.TestPropRVP ref = getattr(obj, access + "_ref") assert ref.value == 1 @@ -170,30 +210,20 @@ def test_property_return_value_policies(access): def test_property_rvalue_policy(): """When returning an rvalue, the return value policy is automatically changed from - `reference(_internal)` to `move`. The following would not work otherwise. - """ - from pybind11_tests import TestPropRVP + `reference(_internal)` to `move`. The following would not work otherwise.""" - instance = TestPropRVP() + instance = m.TestPropRVP() o = instance.rvalue assert o.value == 1 - -def test_property_rvalue_policy_static(): - """When returning an rvalue, the return value policy is automatically changed from - `reference(_internal)` to `move`. The following would not work otherwise. - """ - from pybind11_tests import TestPropRVP - o = TestPropRVP.static_rvalue - assert o.value == 1 + os = m.TestPropRVP.static_rvalue + assert os.value == 1 # https://bitbucket.org/pypy/pypy/issues/2447 @pytest.unsupported_on_pypy def test_dynamic_attributes(): - from pybind11_tests import DynamicClass, CppDerivedDynamicClass - - instance = DynamicClass() + instance = m.DynamicClass() assert not hasattr(instance, "foo") assert "foo" not in dir(instance) @@ -213,16 +243,16 @@ def test_dynamic_attributes(): instance.__dict__ = [] assert str(excinfo.value) == "__dict__ must be set to a dictionary, not a 'list'" - cstats = ConstructorStats.get(DynamicClass) + cstats = ConstructorStats.get(m.DynamicClass) assert cstats.alive() == 1 del instance assert cstats.alive() == 0 # Derived classes should work as well - class PythonDerivedDynamicClass(DynamicClass): + class PythonDerivedDynamicClass(m.DynamicClass): pass - for cls in CppDerivedDynamicClass, PythonDerivedDynamicClass: + for cls in m.CppDerivedDynamicClass, PythonDerivedDynamicClass: derived = cls() derived.foobar = 100 assert derived.foobar == 100 @@ -235,20 +265,18 @@ def test_dynamic_attributes(): # https://bitbucket.org/pypy/pypy/issues/2447 @pytest.unsupported_on_pypy def test_cyclic_gc(): - from pybind11_tests import DynamicClass - # One object references itself - instance = DynamicClass() + instance = m.DynamicClass() instance.circular_reference = instance - cstats = ConstructorStats.get(DynamicClass) + cstats = ConstructorStats.get(m.DynamicClass) assert cstats.alive() == 1 del instance assert cstats.alive() == 0 # Two object reference each other - i1 = DynamicClass() - i2 = DynamicClass() + i1 = m.DynamicClass() + i2 = m.DynamicClass() i1.cycle = i2 i2.cycle = i1 @@ -258,9 +286,7 @@ def test_cyclic_gc(): def test_noconvert_args(msg): - from pybind11_tests import ArgInspector, arg_inspect_func, floats_only, floats_preferred - - a = ArgInspector() + a = m.ArgInspector() assert msg(a.f("hi")) == """ loading ArgInspector1 argument WITH conversion allowed. Argument value = hi """ @@ -284,15 +310,15 @@ def test_noconvert_args(msg): """ assert (a.h("arg 1") == "loading ArgInspector2 argument WITHOUT conversion allowed. Argument value = arg 1") - assert msg(arg_inspect_func("A1", "A2")) == """ + assert msg(m.arg_inspect_func("A1", "A2")) == """ loading ArgInspector2 argument WITH conversion allowed. Argument value = A1 loading ArgInspector1 argument WITHOUT conversion allowed. Argument value = A2 """ - assert floats_preferred(4) == 2.0 - assert floats_only(4.0) == 2.0 + assert m.floats_preferred(4) == 2.0 + assert m.floats_only(4.0) == 2.0 with pytest.raises(TypeError) as excinfo: - floats_only(4) + m.floats_only(4) assert msg(excinfo.value) == """ floats_only(): incompatible function arguments. The following argument types are supported: 1. (f: float) -> float @@ -300,26 +326,151 @@ def test_noconvert_args(msg): Invoked with: 4 """ + assert m.ints_preferred(4) == 2 + assert m.ints_preferred(True) == 0 + with pytest.raises(TypeError) as excinfo: + m.ints_preferred(4.0) + assert msg(excinfo.value) == """ + ints_preferred(): incompatible function arguments. The following argument types are supported: + 1. (i: int) -> int + + Invoked with: 4.0 + """ # noqa: E501 line too long + + assert m.ints_only(4) == 2 + with pytest.raises(TypeError) as excinfo: + m.ints_only(4.0) + assert msg(excinfo.value) == """ + ints_only(): incompatible function arguments. The following argument types are supported: + 1. (i: int) -> int + + Invoked with: 4.0 + """ + def test_bad_arg_default(msg): - from pybind11_tests import debug_enabled, bad_arg_def_named, bad_arg_def_unnamed + from pybind11_tests import debug_enabled with pytest.raises(RuntimeError) as excinfo: - bad_arg_def_named() + m.bad_arg_def_named() assert msg(excinfo.value) == ( - "arg(): could not convert default argument 'a: NotRegistered' in function 'should_fail' " - "into a Python object (type not registered yet?)" + "arg(): could not convert default argument 'a: UnregisteredType' in function " + "'should_fail' into a Python object (type not registered yet?)" if debug_enabled else "arg(): could not convert default argument into a Python object (type not registered " "yet?). Compile in debug mode for more information." ) with pytest.raises(RuntimeError) as excinfo: - bad_arg_def_unnamed() + m.bad_arg_def_unnamed() assert msg(excinfo.value) == ( - "arg(): could not convert default argument 'NotRegistered' in function 'should_fail' " - "into a Python object (type not registered yet?)" + "arg(): could not convert default argument 'UnregisteredType' in function " + "'should_fail' into a Python object (type not registered yet?)" if debug_enabled else "arg(): could not convert default argument into a Python object (type not registered " "yet?). Compile in debug mode for more information." ) + + +def test_accepts_none(msg): + a = m.NoneTester() + assert m.no_none1(a) == 42 + assert m.no_none2(a) == 42 + assert m.no_none3(a) == 42 + assert m.no_none4(a) == 42 + assert m.no_none5(a) == 42 + assert m.ok_none1(a) == 42 + assert m.ok_none2(a) == 42 + assert m.ok_none3(a) == 42 + assert m.ok_none4(a) == 42 + assert m.ok_none5(a) == 42 + + with pytest.raises(TypeError) as excinfo: + m.no_none1(None) + assert "incompatible function arguments" in str(excinfo.value) + with pytest.raises(TypeError) as excinfo: + m.no_none2(None) + assert "incompatible function arguments" in str(excinfo.value) + with pytest.raises(TypeError) as excinfo: + m.no_none3(None) + assert "incompatible function arguments" in str(excinfo.value) + with pytest.raises(TypeError) as excinfo: + m.no_none4(None) + assert "incompatible function arguments" in str(excinfo.value) + with pytest.raises(TypeError) as excinfo: + m.no_none5(None) + assert "incompatible function arguments" in str(excinfo.value) + + # The first one still raises because you can't pass None as a lvalue reference arg: + with pytest.raises(TypeError) as excinfo: + assert m.ok_none1(None) == -1 + assert msg(excinfo.value) == """ + ok_none1(): incompatible function arguments. The following argument types are supported: + 1. (arg0: m.methods_and_attributes.NoneTester) -> int + + Invoked with: None + """ + + # The rest take the argument as pointer or holder, and accept None: + assert m.ok_none2(None) == -1 + assert m.ok_none3(None) == -1 + assert m.ok_none4(None) == -1 + assert m.ok_none5(None) == -1 + + +def test_str_issue(msg): + """#283: __str__ called on uninitialized instance when constructor arguments invalid""" + + assert str(m.StrIssue(3)) == "StrIssue[3]" + + with pytest.raises(TypeError) as excinfo: + str(m.StrIssue("no", "such", "constructor")) + assert msg(excinfo.value) == """ + __init__(): incompatible constructor arguments. The following argument types are supported: + 1. m.methods_and_attributes.StrIssue(arg0: int) + 2. m.methods_and_attributes.StrIssue() + + Invoked with: 'no', 'such', 'constructor' + """ + + +def test_unregistered_base_implementations(): + a = m.RegisteredDerived() + a.do_nothing() + assert a.rw_value == 42 + assert a.ro_value == 1.25 + a.rw_value += 5 + assert a.sum() == 48.25 + a.increase_value() + assert a.rw_value == 48 + assert a.ro_value == 1.5 + assert a.sum() == 49.5 + assert a.rw_value_prop == 48 + a.rw_value_prop += 1 + assert a.rw_value_prop == 49 + a.increase_value() + assert a.ro_value_prop == 1.75 + + +def test_custom_caster_destruction(): + """Tests that returning a pointer to a type that gets converted with a custom type caster gets + destroyed when the function has py::return_value_policy::take_ownership policy applied.""" + + cstats = m.destruction_tester_cstats() + # This one *doesn't* have take_ownership: the pointer should be used but not destroyed: + z = m.custom_caster_no_destroy() + assert cstats.alive() == 1 and cstats.default_constructions == 1 + assert z + + # take_ownership applied: this constructs a new object, casts it, then destroys it: + z = m.custom_caster_destroy() + assert z + assert cstats.default_constructions == 2 + + # Same, but with a const pointer return (which should *not* inhibit destruction): + z = m.custom_caster_destroy_const() + assert z + assert cstats.default_constructions == 3 + + # Make sure we still only have the original object (from ..._no_destroy()) alive: + assert cstats.alive() == 1 diff --git a/ext/pybind11/tests/test_modules.cpp b/ext/pybind11/tests/test_modules.cpp index 50c7d8412..c1475fa62 100644 --- a/ext/pybind11/tests/test_modules.cpp +++ b/ext/pybind11/tests/test_modules.cpp @@ -11,42 +11,38 @@ #include "pybind11_tests.h" #include "constructor_stats.h" -std::string submodule_func() { - return "submodule_func()"; -} - -class A { -public: - A(int v) : v(v) { print_created(this, v); } - ~A() { print_destroyed(this); } - A(const A&) { print_copy_created(this); } - A& operator=(const A ©) { print_copy_assigned(this); v = copy.v; return *this; } - std::string toString() { return "A[" + std::to_string(v) + "]"; } -private: - int v; -}; - -class B { -public: - B() { print_default_created(this); } - ~B() { print_destroyed(this); } - B(const B&) { print_copy_created(this); } - B& operator=(const B ©) { print_copy_assigned(this); a1 = copy.a1; a2 = copy.a2; return *this; } - A &get_a1() { return a1; } - A &get_a2() { return a2; } - - A a1{1}; - A a2{2}; -}; - -test_initializer modules([](py::module &m) { - py::module m_sub = m.def_submodule("submodule"); - m_sub.def("submodule_func", &submodule_func); +TEST_SUBMODULE(modules, m) { + // test_nested_modules + py::module m_sub = m.def_submodule("subsubmodule"); + m_sub.def("submodule_func", []() { return "submodule_func()"; }); + // test_reference_internal + class A { + public: + A(int v) : v(v) { print_created(this, v); } + ~A() { print_destroyed(this); } + A(const A&) { print_copy_created(this); } + A& operator=(const A ©) { print_copy_assigned(this); v = copy.v; return *this; } + std::string toString() { return "A[" + std::to_string(v) + "]"; } + private: + int v; + }; py::class_<A>(m_sub, "A") .def(py::init<int>()) .def("__repr__", &A::toString); + class B { + public: + B() { print_default_created(this); } + ~B() { print_destroyed(this); } + B(const B&) { print_copy_created(this); } + B& operator=(const B ©) { print_copy_assigned(this); a1 = copy.a1; a2 = copy.a2; return *this; } + A &get_a1() { return a1; } + A &get_a2() { return a2; } + + A a1{1}; + A a2{2}; + }; py::class_<B>(m_sub, "B") .def(py::init<>()) .def("get_a1", &B::get_a1, "Return the internal A 1", py::return_value_policy::reference_internal) @@ -55,4 +51,48 @@ test_initializer modules([](py::module &m) { .def_readwrite("a2", &B::a2); m.attr("OD") = py::module::import("collections").attr("OrderedDict"); -}); + + // test_duplicate_registration + // Registering two things with the same name + m.def("duplicate_registration", []() { + class Dupe1 { }; + class Dupe2 { }; + class Dupe3 { }; + class DupeException { }; + + auto dm = py::module("dummy"); + auto failures = py::list(); + + py::class_<Dupe1>(dm, "Dupe1"); + py::class_<Dupe2>(dm, "Dupe2"); + dm.def("dupe1_factory", []() { return Dupe1(); }); + py::exception<DupeException>(dm, "DupeException"); + + try { + py::class_<Dupe1>(dm, "Dupe1"); + failures.append("Dupe1 class"); + } catch (std::runtime_error &) {} + try { + dm.def("Dupe1", []() { return Dupe1(); }); + failures.append("Dupe1 function"); + } catch (std::runtime_error &) {} + try { + py::class_<Dupe3>(dm, "dupe1_factory"); + failures.append("dupe1_factory"); + } catch (std::runtime_error &) {} + try { + py::exception<Dupe3>(dm, "Dupe2"); + failures.append("Dupe2"); + } catch (std::runtime_error &) {} + try { + dm.def("DupeException", []() { return 30; }); + failures.append("DupeException1"); + } catch (std::runtime_error &) {} + try { + py::class_<DupeException>(dm, "DupeException"); + failures.append("DupeException2"); + } catch (std::runtime_error &) {} + + return failures; + }); +} diff --git a/ext/pybind11/tests/test_modules.py b/ext/pybind11/tests/test_modules.py index 69620949b..2552838c2 100644 --- a/ext/pybind11/tests/test_modules.py +++ b/ext/pybind11/tests/test_modules.py @@ -1,32 +1,34 @@ +from pybind11_tests import modules as m +from pybind11_tests.modules import subsubmodule as ms +from pybind11_tests import ConstructorStats + def test_nested_modules(): import pybind11_tests - from pybind11_tests.submodule import submodule_func - assert pybind11_tests.__name__ == "pybind11_tests" - assert pybind11_tests.submodule.__name__ == "pybind11_tests.submodule" + assert pybind11_tests.modules.__name__ == "pybind11_tests.modules" + assert pybind11_tests.modules.subsubmodule.__name__ == "pybind11_tests.modules.subsubmodule" + assert m.__name__ == "pybind11_tests.modules" + assert ms.__name__ == "pybind11_tests.modules.subsubmodule" - assert submodule_func() == "submodule_func()" + assert ms.submodule_func() == "submodule_func()" def test_reference_internal(): - from pybind11_tests import ConstructorStats - from pybind11_tests.submodule import A, B - - b = B() + b = ms.B() assert str(b.get_a1()) == "A[1]" assert str(b.a1) == "A[1]" assert str(b.get_a2()) == "A[2]" assert str(b.a2) == "A[2]" - b.a1 = A(42) - b.a2 = A(43) + b.a1 = ms.A(42) + b.a2 = ms.A(43) assert str(b.get_a1()) == "A[42]" assert str(b.a1) == "A[42]" assert str(b.get_a2()) == "A[43]" assert str(b.a2) == "A[43]" - astats, bstats = ConstructorStats.get(A), ConstructorStats.get(B) + astats, bstats = ConstructorStats.get(ms.A), ConstructorStats.get(ms.B) assert astats.alive() == 2 assert bstats.alive() == 1 del b @@ -47,7 +49,7 @@ def test_reference_internal(): def test_importing(): - from pybind11_tests import OD + from pybind11_tests.modules import OD from collections import OrderedDict assert OD is OrderedDict @@ -59,4 +61,12 @@ def test_pydoc(): import pybind11_tests import pydoc + assert pybind11_tests.__name__ == "pybind11_tests" + assert pybind11_tests.__doc__ == "pybind11 test module" assert pydoc.text.docmodule(pybind11_tests) + + +def test_duplicate_registration(): + """Registering two things with the same name""" + + assert m.duplicate_registration() == [] diff --git a/ext/pybind11/tests/test_multiple_inheritance.cpp b/ext/pybind11/tests/test_multiple_inheritance.cpp index 3ebeb202b..35f9d9c4e 100644 --- a/ext/pybind11/tests/test_multiple_inheritance.cpp +++ b/ext/pybind11/tests/test_multiple_inheritance.cpp @@ -9,41 +9,83 @@ */ #include "pybind11_tests.h" +#include "constructor_stats.h" -struct Base1 { - Base1(int i) : i(i) { } - int foo() { return i; } +// Many bases for testing that multiple inheritance from many classes (i.e. requiring extra +// space for holder constructed flags) works. +template <int N> struct BaseN { + BaseN(int i) : i(i) { } int i; }; -struct Base2 { - Base2(int i) : i(i) { } - int bar() { return i; } - int i; +// test_mi_static_properties +struct Vanilla { + std::string vanilla() { return "Vanilla"; }; }; - -struct Base12 : Base1, Base2 { - Base12(int i, int j) : Base1(i), Base2(j) { } +struct WithStatic1 { + static std::string static_func1() { return "WithStatic1"; }; + static int static_value1; }; - -struct MIType : Base12 { - MIType(int i, int j) : Base12(i, j) { } +struct WithStatic2 { + static std::string static_func2() { return "WithStatic2"; }; + static int static_value2; }; +struct VanillaStaticMix1 : Vanilla, WithStatic1, WithStatic2 { + static std::string static_func() { return "VanillaStaticMix1"; } + static int static_value; +}; +struct VanillaStaticMix2 : WithStatic1, Vanilla, WithStatic2 { + static std::string static_func() { return "VanillaStaticMix2"; } + static int static_value; +}; +int WithStatic1::static_value1 = 1; +int WithStatic2::static_value2 = 2; +int VanillaStaticMix1::static_value = 12; +int VanillaStaticMix2::static_value = 12; -test_initializer multiple_inheritance([](py::module &m) { +TEST_SUBMODULE(multiple_inheritance, m) { + + // test_multiple_inheritance_mix1 + // test_multiple_inheritance_mix2 + struct Base1 { + Base1(int i) : i(i) { } + int foo() { return i; } + int i; + }; py::class_<Base1> b1(m, "Base1"); b1.def(py::init<int>()) .def("foo", &Base1::foo); + struct Base2 { + Base2(int i) : i(i) { } + int bar() { return i; } + int i; + }; py::class_<Base2> b2(m, "Base2"); b2.def(py::init<int>()) .def("bar", &Base2::bar); - py::class_<Base12, Base1, Base2>(m, "Base12"); + // test_multiple_inheritance_cpp + struct Base12 : Base1, Base2 { + Base12(int i, int j) : Base1(i), Base2(j) { } + }; + struct MIType : Base12 { + MIType(int i, int j) : Base12(i, j) { } + }; + py::class_<Base12, Base1, Base2>(m, "Base12"); py::class_<MIType, Base12>(m, "MIType") .def(py::init<int, int>()); + + // test_multiple_inheritance_python_many_bases + #define PYBIND11_BASEN(N) py::class_<BaseN<N>>(m, "BaseN" #N).def(py::init<int>()).def("f" #N, [](BaseN<N> &b) { return b.i + N; }) + PYBIND11_BASEN( 1); PYBIND11_BASEN( 2); PYBIND11_BASEN( 3); PYBIND11_BASEN( 4); + PYBIND11_BASEN( 5); PYBIND11_BASEN( 6); PYBIND11_BASEN( 7); PYBIND11_BASEN( 8); + PYBIND11_BASEN( 9); PYBIND11_BASEN(10); PYBIND11_BASEN(11); PYBIND11_BASEN(12); + PYBIND11_BASEN(13); PYBIND11_BASEN(14); PYBIND11_BASEN(15); PYBIND11_BASEN(16); + PYBIND11_BASEN(17); + // Uncommenting this should result in a compile time failure (MI can only be specified via // template parameters because pybind has to know the types involved; see discussion in #742 for // details). @@ -52,82 +94,78 @@ test_initializer multiple_inheritance([](py::module &m) { // }; // py::class_<Base12v2>(m, "Base12v2", b1, b2) // .def(py::init<int, int>()); -}); - -/* Test the case where not all base classes are specified, - and where pybind11 requires the py::multiple_inheritance - flag to perform proper casting between types */ - -struct Base1a { - Base1a(int i) : i(i) { } - int foo() { return i; } - int i; -}; - -struct Base2a { - Base2a(int i) : i(i) { } - int bar() { return i; } - int i; -}; -struct Base12a : Base1a, Base2a { - Base12a(int i, int j) : Base1a(i), Base2a(j) { } -}; -test_initializer multiple_inheritance_nonexplicit([](py::module &m) { + // test_multiple_inheritance_virtbase + // Test the case where not all base classes are specified, and where pybind11 requires the + // py::multiple_inheritance flag to perform proper casting between types. + struct Base1a { + Base1a(int i) : i(i) { } + int foo() { return i; } + int i; + }; py::class_<Base1a, std::shared_ptr<Base1a>>(m, "Base1a") .def(py::init<int>()) .def("foo", &Base1a::foo); + struct Base2a { + Base2a(int i) : i(i) { } + int bar() { return i; } + int i; + }; py::class_<Base2a, std::shared_ptr<Base2a>>(m, "Base2a") .def(py::init<int>()) .def("bar", &Base2a::bar); + struct Base12a : Base1a, Base2a { + Base12a(int i, int j) : Base1a(i), Base2a(j) { } + }; py::class_<Base12a, /* Base1 missing */ Base2a, std::shared_ptr<Base12a>>(m, "Base12a", py::multiple_inheritance()) .def(py::init<int, int>()); m.def("bar_base2a", [](Base2a *b) { return b->bar(); }); m.def("bar_base2a_sharedptr", [](std::shared_ptr<Base2a> b) { return b->bar(); }); -}); - -struct Vanilla { - std::string vanilla() { return "Vanilla"; }; -}; - -struct WithStatic1 { - static std::string static_func1() { return "WithStatic1"; }; - static int static_value1; -}; - -struct WithStatic2 { - static std::string static_func2() { return "WithStatic2"; }; - static int static_value2; -}; - -struct WithDict { }; - -struct VanillaStaticMix1 : Vanilla, WithStatic1, WithStatic2 { - static std::string static_func() { return "VanillaStaticMix1"; } - static int static_value; -}; - -struct VanillaStaticMix2 : WithStatic1, Vanilla, WithStatic2 { - static std::string static_func() { return "VanillaStaticMix2"; } - static int static_value; -}; - -struct VanillaDictMix1 : Vanilla, WithDict { }; -struct VanillaDictMix2 : WithDict, Vanilla { }; - -int WithStatic1::static_value1 = 1; -int WithStatic2::static_value2 = 2; -int VanillaStaticMix1::static_value = 12; -int VanillaStaticMix2::static_value = 12; - -test_initializer mi_static_properties([](py::module &pm) { - auto m = pm.def_submodule("mi"); + // test_mi_unaligned_base + // test_mi_base_return + // Issue #801: invalid casting to derived type with MI bases + struct I801B1 { int a = 1; virtual ~I801B1() = default; }; + struct I801B2 { int b = 2; virtual ~I801B2() = default; }; + struct I801C : I801B1, I801B2 {}; + struct I801D : I801C {}; // Indirect MI + // Unregistered classes: + struct I801B3 { int c = 3; virtual ~I801B3() = default; }; + struct I801E : I801B3, I801D {}; + + py::class_<I801B1, std::shared_ptr<I801B1>>(m, "I801B1").def(py::init<>()).def_readonly("a", &I801B1::a); + py::class_<I801B2, std::shared_ptr<I801B2>>(m, "I801B2").def(py::init<>()).def_readonly("b", &I801B2::b); + py::class_<I801C, I801B1, I801B2, std::shared_ptr<I801C>>(m, "I801C").def(py::init<>()); + py::class_<I801D, I801C, std::shared_ptr<I801D>>(m, "I801D").def(py::init<>()); + + // Two separate issues here: first, we want to recognize a pointer to a base type as being a + // known instance even when the pointer value is unequal (i.e. due to a non-first + // multiple-inheritance base class): + m.def("i801b1_c", [](I801C *c) { return static_cast<I801B1 *>(c); }); + m.def("i801b2_c", [](I801C *c) { return static_cast<I801B2 *>(c); }); + m.def("i801b1_d", [](I801D *d) { return static_cast<I801B1 *>(d); }); + m.def("i801b2_d", [](I801D *d) { return static_cast<I801B2 *>(d); }); + + // Second, when returned a base class pointer to a derived instance, we cannot assume that the + // pointer is `reinterpret_cast`able to the derived pointer because, like above, the base class + // pointer could be offset. + m.def("i801c_b1", []() -> I801B1 * { return new I801C(); }); + m.def("i801c_b2", []() -> I801B2 * { return new I801C(); }); + m.def("i801d_b1", []() -> I801B1 * { return new I801D(); }); + m.def("i801d_b2", []() -> I801B2 * { return new I801D(); }); + + // Return a base class pointer to a pybind-registered type when the actual derived type + // isn't pybind-registered (and uses multiple-inheritance to offset the pybind base) + m.def("i801e_c", []() -> I801C * { return new I801E(); }); + m.def("i801e_b2", []() -> I801B2 * { return new I801E(); }); + + + // test_mi_static_properties py::class_<Vanilla>(m, "Vanilla") .def(py::init<>()) .def("vanilla", &Vanilla::vanilla); @@ -154,9 +192,29 @@ test_initializer mi_static_properties([](py::module &pm) { .def_static("static_func", &VanillaStaticMix2::static_func) .def_readwrite_static("static_value", &VanillaStaticMix2::static_value); + #if !defined(PYPY_VERSION) + struct WithDict { }; + struct VanillaDictMix1 : Vanilla, WithDict { }; + struct VanillaDictMix2 : WithDict, Vanilla { }; py::class_<WithDict>(m, "WithDict", py::dynamic_attr()).def(py::init<>()); py::class_<VanillaDictMix1, Vanilla, WithDict>(m, "VanillaDictMix1").def(py::init<>()); py::class_<VanillaDictMix2, WithDict, Vanilla>(m, "VanillaDictMix2").def(py::init<>()); #endif -}); + + // test_diamond_inheritance + // Issue #959: segfault when constructing diamond inheritance instance + // All of these have int members so that there will be various unequal pointers involved. + struct B { int b; virtual ~B() = default; }; + struct C0 : public virtual B { int c0; }; + struct C1 : public virtual B { int c1; }; + struct D : public C0, public C1 { int d; }; + py::class_<B>(m, "B") + .def("b", [](B *self) { return self; }); + py::class_<C0, B>(m, "C0") + .def("c0", [](C0 *self) { return self; }); + py::class_<C1, B>(m, "C1") + .def("c1", [](C1 *self) { return self; }); + py::class_<D, C0, C1>(m, "D") + .def(py::init<>()); +} diff --git a/ext/pybind11/tests/test_multiple_inheritance.py b/ext/pybind11/tests/test_multiple_inheritance.py index 7aaab7cd0..475dd3b3d 100644 --- a/ext/pybind11/tests/test_multiple_inheritance.py +++ b/ext/pybind11/tests/test_multiple_inheritance.py @@ -1,18 +1,16 @@ import pytest +from pybind11_tests import ConstructorStats +from pybind11_tests import multiple_inheritance as m def test_multiple_inheritance_cpp(): - from pybind11_tests import MIType - - mt = MIType(3, 4) + mt = m.MIType(3, 4) assert mt.foo() == 3 assert mt.bar() == 4 def test_multiple_inheritance_mix1(): - from pybind11_tests import Base2 - class Base1: def __init__(self, i): self.i = i @@ -20,10 +18,10 @@ def test_multiple_inheritance_mix1(): def foo(self): return self.i - class MITypePy(Base1, Base2): + class MITypePy(Base1, m.Base2): def __init__(self, i, j): Base1.__init__(self, i) - Base2.__init__(self, j) + m.Base2.__init__(self, j) mt = MITypePy(3, 4) @@ -32,7 +30,6 @@ def test_multiple_inheritance_mix1(): def test_multiple_inheritance_mix2(): - from pybind11_tests import Base1 class Base2: def __init__(self, i): @@ -41,9 +38,9 @@ def test_multiple_inheritance_mix2(): def bar(self): return self.i - class MITypePy(Base1, Base2): + class MITypePy(m.Base1, Base2): def __init__(self, i, j): - Base1.__init__(self, i) + m.Base1.__init__(self, i) Base2.__init__(self, j) mt = MITypePy(3, 4) @@ -52,43 +49,198 @@ def test_multiple_inheritance_mix2(): assert mt.bar() == 4 -def test_multiple_inheritance_error(): - """Inheriting from multiple C++ bases in Python is not supported""" - from pybind11_tests import Base1, Base2 +def test_multiple_inheritance_python(): + + class MI1(m.Base1, m.Base2): + def __init__(self, i, j): + m.Base1.__init__(self, i) + m.Base2.__init__(self, j) + + class B1(object): + def v(self): + return 1 + + class MI2(B1, m.Base1, m.Base2): + def __init__(self, i, j): + B1.__init__(self) + m.Base1.__init__(self, i) + m.Base2.__init__(self, j) + + class MI3(MI2): + def __init__(self, i, j): + MI2.__init__(self, i, j) + + class MI4(MI3, m.Base2): + def __init__(self, i, j): + MI3.__init__(self, i, j) + # This should be ignored (Base2 is already initialized via MI2): + m.Base2.__init__(self, i + 100) + + class MI5(m.Base2, B1, m.Base1): + def __init__(self, i, j): + B1.__init__(self) + m.Base1.__init__(self, i) + m.Base2.__init__(self, j) + + class MI6(m.Base2, B1): + def __init__(self, i): + m.Base2.__init__(self, i) + B1.__init__(self) + + class B2(B1): + def v(self): + return 2 + + class B3(object): + def v(self): + return 3 + + class B4(B3, B2): + def v(self): + return 4 + + class MI7(B4, MI6): + def __init__(self, i): + B4.__init__(self) + MI6.__init__(self, i) + + class MI8(MI6, B3): + def __init__(self, i): + MI6.__init__(self, i) + B3.__init__(self) - with pytest.raises(TypeError) as excinfo: - # noinspection PyUnusedLocal - class MI(Base1, Base2): - pass - assert "Can't inherit from multiple C++ classes in Python" in str(excinfo.value) + class MI8b(B3, MI6): + def __init__(self, i): + B3.__init__(self) + MI6.__init__(self, i) + + mi1 = MI1(1, 2) + assert mi1.foo() == 1 + assert mi1.bar() == 2 + + mi2 = MI2(3, 4) + assert mi2.v() == 1 + assert mi2.foo() == 3 + assert mi2.bar() == 4 + + mi3 = MI3(5, 6) + assert mi3.v() == 1 + assert mi3.foo() == 5 + assert mi3.bar() == 6 + + mi4 = MI4(7, 8) + assert mi4.v() == 1 + assert mi4.foo() == 7 + assert mi4.bar() == 8 + + mi5 = MI5(10, 11) + assert mi5.v() == 1 + assert mi5.foo() == 10 + assert mi5.bar() == 11 + + mi6 = MI6(12) + assert mi6.v() == 1 + assert mi6.bar() == 12 + + mi7 = MI7(13) + assert mi7.v() == 4 + assert mi7.bar() == 13 + + mi8 = MI8(14) + assert mi8.v() == 1 + assert mi8.bar() == 14 + + mi8b = MI8b(15) + assert mi8b.v() == 3 + assert mi8b.bar() == 15 + + +def test_multiple_inheritance_python_many_bases(): + + class MIMany14(m.BaseN1, m.BaseN2, m.BaseN3, m.BaseN4): + def __init__(self): + m.BaseN1.__init__(self, 1) + m.BaseN2.__init__(self, 2) + m.BaseN3.__init__(self, 3) + m.BaseN4.__init__(self, 4) + + class MIMany58(m.BaseN5, m.BaseN6, m.BaseN7, m.BaseN8): + def __init__(self): + m.BaseN5.__init__(self, 5) + m.BaseN6.__init__(self, 6) + m.BaseN7.__init__(self, 7) + m.BaseN8.__init__(self, 8) + + class MIMany916(m.BaseN9, m.BaseN10, m.BaseN11, m.BaseN12, m.BaseN13, m.BaseN14, m.BaseN15, + m.BaseN16): + def __init__(self): + m.BaseN9.__init__(self, 9) + m.BaseN10.__init__(self, 10) + m.BaseN11.__init__(self, 11) + m.BaseN12.__init__(self, 12) + m.BaseN13.__init__(self, 13) + m.BaseN14.__init__(self, 14) + m.BaseN15.__init__(self, 15) + m.BaseN16.__init__(self, 16) + + class MIMany19(MIMany14, MIMany58, m.BaseN9): + def __init__(self): + MIMany14.__init__(self) + MIMany58.__init__(self) + m.BaseN9.__init__(self, 9) + + class MIMany117(MIMany14, MIMany58, MIMany916, m.BaseN17): + def __init__(self): + MIMany14.__init__(self) + MIMany58.__init__(self) + MIMany916.__init__(self) + m.BaseN17.__init__(self, 17) + + # Inherits from 4 registered C++ classes: can fit in one pointer on any modern arch: + a = MIMany14() + for i in range(1, 4): + assert getattr(a, "f" + str(i))() == 2 * i + + # Inherits from 8: requires 1/2 pointers worth of holder flags on 32/64-bit arch: + b = MIMany916() + for i in range(9, 16): + assert getattr(b, "f" + str(i))() == 2 * i + + # Inherits from 9: requires >= 2 pointers worth of holder flags + c = MIMany19() + for i in range(1, 9): + assert getattr(c, "f" + str(i))() == 2 * i + + # Inherits from 17: requires >= 3 pointers worth of holder flags + d = MIMany117() + for i in range(1, 17): + assert getattr(d, "f" + str(i))() == 2 * i def test_multiple_inheritance_virtbase(): - from pybind11_tests import Base12a, bar_base2a, bar_base2a_sharedptr - class MITypePy(Base12a): + class MITypePy(m.Base12a): def __init__(self, i, j): - Base12a.__init__(self, i, j) + m.Base12a.__init__(self, i, j) mt = MITypePy(3, 4) assert mt.bar() == 4 - assert bar_base2a(mt) == 4 - assert bar_base2a_sharedptr(mt) == 4 + assert m.bar_base2a(mt) == 4 + assert m.bar_base2a_sharedptr(mt) == 4 def test_mi_static_properties(): """Mixing bases with and without static properties should be possible and the result should be independent of base definition order""" - from pybind11_tests import mi - for d in (mi.VanillaStaticMix1(), mi.VanillaStaticMix2()): + for d in (m.VanillaStaticMix1(), m.VanillaStaticMix2()): assert d.vanilla() == "Vanilla" assert d.static_func1() == "WithStatic1" assert d.static_func2() == "WithStatic2" assert d.static_func() == d.__class__.__name__ - mi.WithStatic1.static_value1 = 1 - mi.WithStatic2.static_value2 = 2 + m.WithStatic1.static_value1 = 1 + m.WithStatic2.static_value2 = 2 assert d.static_value1 == 1 assert d.static_value2 == 2 assert d.static_value == 12 @@ -104,8 +256,94 @@ def test_mi_static_properties(): @pytest.unsupported_on_pypy def test_mi_dynamic_attributes(): """Mixing bases with and without dynamic attribute support""" - from pybind11_tests import mi - for d in (mi.VanillaDictMix1(), mi.VanillaDictMix2()): + for d in (m.VanillaDictMix1(), m.VanillaDictMix2()): d.dynamic = 1 assert d.dynamic == 1 + + +def test_mi_unaligned_base(): + """Returning an offset (non-first MI) base class pointer should recognize the instance""" + + n_inst = ConstructorStats.detail_reg_inst() + + c = m.I801C() + d = m.I801D() + # + 4 below because we have the two instances, and each instance has offset base I801B2 + assert ConstructorStats.detail_reg_inst() == n_inst + 4 + b1c = m.i801b1_c(c) + assert b1c is c + b2c = m.i801b2_c(c) + assert b2c is c + b1d = m.i801b1_d(d) + assert b1d is d + b2d = m.i801b2_d(d) + assert b2d is d + + assert ConstructorStats.detail_reg_inst() == n_inst + 4 # no extra instances + del c, b1c, b2c + assert ConstructorStats.detail_reg_inst() == n_inst + 2 + del d, b1d, b2d + assert ConstructorStats.detail_reg_inst() == n_inst + + +def test_mi_base_return(): + """Tests returning an offset (non-first MI) base class pointer to a derived instance""" + + n_inst = ConstructorStats.detail_reg_inst() + + c1 = m.i801c_b1() + assert type(c1) is m.I801C + assert c1.a == 1 + assert c1.b == 2 + + d1 = m.i801d_b1() + assert type(d1) is m.I801D + assert d1.a == 1 + assert d1.b == 2 + + assert ConstructorStats.detail_reg_inst() == n_inst + 4 + + c2 = m.i801c_b2() + assert type(c2) is m.I801C + assert c2.a == 1 + assert c2.b == 2 + + d2 = m.i801d_b2() + assert type(d2) is m.I801D + assert d2.a == 1 + assert d2.b == 2 + + assert ConstructorStats.detail_reg_inst() == n_inst + 8 + + del c2 + assert ConstructorStats.detail_reg_inst() == n_inst + 6 + del c1, d1, d2 + assert ConstructorStats.detail_reg_inst() == n_inst + + # Returning an unregistered derived type with a registered base; we won't + # pick up the derived type, obviously, but should still work (as an object + # of whatever type was returned). + e1 = m.i801e_c() + assert type(e1) is m.I801C + assert e1.a == 1 + assert e1.b == 2 + + e2 = m.i801e_b2() + assert type(e2) is m.I801B2 + assert e2.b == 2 + + +def test_diamond_inheritance(): + """Tests that diamond inheritance works as expected (issue #959)""" + + # Issue #959: this shouldn't segfault: + d = m.D() + + # Make sure all the various distinct pointers are all recognized as registered instances: + assert d is d.c0() + assert d is d.c1() + assert d is d.b() + assert d is d.c0().b() + assert d is d.c1().b() + assert d is d.c0().c1().b().c0().b() diff --git a/ext/pybind11/tests/test_numpy_array.cpp b/ext/pybind11/tests/test_numpy_array.cpp index cd6487249..2046c0e03 100644 --- a/ext/pybind11/tests/test_numpy_array.cpp +++ b/ext/pybind11/tests/test_numpy_array.cpp @@ -13,7 +13,6 @@ #include <pybind11/stl.h> #include <cstdint> -#include <vector> using arr = py::array; using arr_t = py::array_t<uint16_t, 0>; @@ -27,39 +26,25 @@ template<typename... Ix> arr data_t(const arr_t& a, Ix... index) { return arr(a.size() - a.index_at(index...), a.data(index...)); } -arr& mutate_data(arr& a) { - auto ptr = (uint8_t *) a.mutable_data(); - for (size_t i = 0; i < a.nbytes(); i++) - ptr[i] = (uint8_t) (ptr[i] * 2); - return a; -} - -arr_t& mutate_data_t(arr_t& a) { - auto ptr = a.mutable_data(); - for (size_t i = 0; i < a.size(); i++) - ptr[i]++; - return a; -} - template<typename... Ix> arr& mutate_data(arr& a, Ix... index) { auto ptr = (uint8_t *) a.mutable_data(index...); - for (size_t i = 0; i < a.nbytes() - a.offset_at(index...); i++) + for (ssize_t i = 0; i < a.nbytes() - a.offset_at(index...); i++) ptr[i] = (uint8_t) (ptr[i] * 2); return a; } template<typename... Ix> arr_t& mutate_data_t(arr_t& a, Ix... index) { auto ptr = a.mutable_data(index...); - for (size_t i = 0; i < a.size() - a.index_at(index...); i++) + for (ssize_t i = 0; i < a.size() - a.index_at(index...); i++) ptr[i]++; return a; } -template<typename... Ix> size_t index_at(const arr& a, Ix... idx) { return a.index_at(idx...); } -template<typename... Ix> size_t index_at_t(const arr_t& a, Ix... idx) { return a.index_at(idx...); } -template<typename... Ix> size_t offset_at(const arr& a, Ix... idx) { return a.offset_at(idx...); } -template<typename... Ix> size_t offset_at_t(const arr_t& a, Ix... idx) { return a.offset_at(idx...); } -template<typename... Ix> size_t at_t(const arr_t& a, Ix... idx) { return a.at(idx...); } +template<typename... Ix> ssize_t index_at(const arr& a, Ix... idx) { return a.index_at(idx...); } +template<typename... Ix> ssize_t index_at_t(const arr_t& a, Ix... idx) { return a.index_at(idx...); } +template<typename... Ix> ssize_t offset_at(const arr& a, Ix... idx) { return a.offset_at(idx...); } +template<typename... Ix> ssize_t offset_at_t(const arr_t& a, Ix... idx) { return a.offset_at(idx...); } +template<typename... Ix> ssize_t at_t(const arr_t& a, Ix... idx) { return a.at(idx...); } template<typename... Ix> arr_t& mutate_at_t(arr_t& a, Ix... idx) { a.mutable_at(idx...)++; return a; } #define def_index_fn(name, type) \ @@ -83,55 +68,57 @@ template <typename T, typename T2> py::handle auxiliaries(T &&r, T2 &&r2) { return l.release(); } -test_initializer numpy_array([](py::module &m) { - auto sm = m.def_submodule("array"); +TEST_SUBMODULE(numpy_array, sm) { + try { py::module::import("numpy"); } + catch (...) { return; } + // test_array_attributes sm.def("ndim", [](const arr& a) { return a.ndim(); }); sm.def("shape", [](const arr& a) { return arr(a.ndim(), a.shape()); }); - sm.def("shape", [](const arr& a, size_t dim) { return a.shape(dim); }); + sm.def("shape", [](const arr& a, ssize_t dim) { return a.shape(dim); }); sm.def("strides", [](const arr& a) { return arr(a.ndim(), a.strides()); }); - sm.def("strides", [](const arr& a, size_t dim) { return a.strides(dim); }); + sm.def("strides", [](const arr& a, ssize_t dim) { return a.strides(dim); }); sm.def("writeable", [](const arr& a) { return a.writeable(); }); sm.def("size", [](const arr& a) { return a.size(); }); sm.def("itemsize", [](const arr& a) { return a.itemsize(); }); sm.def("nbytes", [](const arr& a) { return a.nbytes(); }); sm.def("owndata", [](const arr& a) { return a.owndata(); }); - def_index_fn(data, const arr&); - def_index_fn(data_t, const arr_t&); + // test_index_offset def_index_fn(index_at, const arr&); def_index_fn(index_at_t, const arr_t&); def_index_fn(offset_at, const arr&); def_index_fn(offset_at_t, const arr_t&); + // test_data + def_index_fn(data, const arr&); + def_index_fn(data_t, const arr_t&); + // test_mutate_data, test_mutate_readonly def_index_fn(mutate_data, arr&); def_index_fn(mutate_data_t, arr_t&); def_index_fn(at_t, const arr_t&); def_index_fn(mutate_at_t, arr_t&); - sm.def("make_f_array", [] { - return py::array_t<float>({ 2, 2 }, { 4, 8 }); - }); - - sm.def("make_c_array", [] { - return py::array_t<float>({ 2, 2 }, { 8, 4 }); - }); + // test_make_c_f_array + sm.def("make_f_array", [] { return py::array_t<float>({ 2, 2 }, { 4, 8 }); }); + sm.def("make_c_array", [] { return py::array_t<float>({ 2, 2 }, { 8, 4 }); }); + // test_wrap sm.def("wrap", [](py::array a) { return py::array( a.dtype(), - std::vector<size_t>(a.shape(), a.shape() + a.ndim()), - std::vector<size_t>(a.strides(), a.strides() + a.ndim()), + {a.shape(), a.shape() + a.ndim()}, + {a.strides(), a.strides() + a.ndim()}, a.data(), a ); }); + // test_numpy_view struct ArrayClass { int data[2] = { 1, 2 }; ArrayClass() { py::print("ArrayClass()"); } ~ArrayClass() { py::print("~ArrayClass()"); } }; - py::class_<ArrayClass>(sm, "ArrayClass") .def(py::init<>()) .def("numpy_view", [](py::object &obj) { @@ -141,16 +128,18 @@ test_initializer numpy_array([](py::module &m) { } ); + // test_cast_numpy_int64_to_uint64 sm.def("function_taking_uint64", [](uint64_t) { }); + // test_isinstance sm.def("isinstance_untyped", [](py::object yes, py::object no) { return py::isinstance<py::array>(yes) && !py::isinstance<py::array>(no); }); - sm.def("isinstance_typed", [](py::object o) { return py::isinstance<py::array_t<double>>(o) && !py::isinstance<py::array_t<int>>(o); }); + // test_constructors sm.def("default_constructors", []() { return py::dict( "array"_a=py::array(), @@ -158,7 +147,6 @@ test_initializer numpy_array([](py::module &m) { "array_t<double>"_a=py::array_t<double>() ); }); - sm.def("converting_constructors", [](py::object o) { return py::dict( "array"_a=py::array(o), @@ -167,7 +155,7 @@ test_initializer numpy_array([](py::module &m) { ); }); - // Overload resolution tests: + // test_overload_resolution sm.def("overloaded", [](py::array_t<double>) { return "double"; }); sm.def("overloaded", [](py::array_t<float>) { return "float"; }); sm.def("overloaded", [](py::array_t<int>) { return "int"; }); @@ -195,40 +183,42 @@ test_initializer numpy_array([](py::module &m) { sm.def("overloaded5", [](py::array_t<unsigned int>) { return "unsigned int"; }); sm.def("overloaded5", [](py::array_t<double>) { return "double"; }); + // test_greedy_string_overload // Issue 685: ndarray shouldn't go to std::string overload sm.def("issue685", [](std::string) { return "string"; }); sm.def("issue685", [](py::array) { return "array"; }); sm.def("issue685", [](py::object) { return "other"; }); + // test_array_unchecked_fixed_dims sm.def("proxy_add2", [](py::array_t<double> a, double v) { auto r = a.mutable_unchecked<2>(); - for (size_t i = 0; i < r.shape(0); i++) - for (size_t j = 0; j < r.shape(1); j++) + for (ssize_t i = 0; i < r.shape(0); i++) + for (ssize_t j = 0; j < r.shape(1); j++) r(i, j) += v; }, py::arg().noconvert(), py::arg()); sm.def("proxy_init3", [](double start) { py::array_t<double, py::array::c_style> a({ 3, 3, 3 }); auto r = a.mutable_unchecked<3>(); - for (size_t i = 0; i < r.shape(0); i++) - for (size_t j = 0; j < r.shape(1); j++) - for (size_t k = 0; k < r.shape(2); k++) + for (ssize_t i = 0; i < r.shape(0); i++) + for (ssize_t j = 0; j < r.shape(1); j++) + for (ssize_t k = 0; k < r.shape(2); k++) r(i, j, k) = start++; return a; }); sm.def("proxy_init3F", [](double start) { py::array_t<double, py::array::f_style> a({ 3, 3, 3 }); auto r = a.mutable_unchecked<3>(); - for (size_t k = 0; k < r.shape(2); k++) - for (size_t j = 0; j < r.shape(1); j++) - for (size_t i = 0; i < r.shape(0); i++) + for (ssize_t k = 0; k < r.shape(2); k++) + for (ssize_t j = 0; j < r.shape(1); j++) + for (ssize_t i = 0; i < r.shape(0); i++) r(i, j, k) = start++; return a; }); sm.def("proxy_squared_L2_norm", [](py::array_t<double> a) { auto r = a.unchecked<1>(); double sumsq = 0; - for (size_t i = 0; i < r.shape(0); i++) + for (ssize_t i = 0; i < r.shape(0); i++) sumsq += r[i] * r(i); // Either notation works for a 1D array return sumsq; }); @@ -239,21 +229,22 @@ test_initializer numpy_array([](py::module &m) { return auxiliaries(r, r2); }); + // test_array_unchecked_dyn_dims // Same as the above, but without a compile-time dimensions specification: sm.def("proxy_add2_dyn", [](py::array_t<double> a, double v) { auto r = a.mutable_unchecked(); if (r.ndim() != 2) throw std::domain_error("error: ndim != 2"); - for (size_t i = 0; i < r.shape(0); i++) - for (size_t j = 0; j < r.shape(1); j++) + for (ssize_t i = 0; i < r.shape(0); i++) + for (ssize_t j = 0; j < r.shape(1); j++) r(i, j) += v; }, py::arg().noconvert(), py::arg()); sm.def("proxy_init3_dyn", [](double start) { py::array_t<double, py::array::c_style> a({ 3, 3, 3 }); auto r = a.mutable_unchecked(); if (r.ndim() != 3) throw std::domain_error("error: ndim != 3"); - for (size_t i = 0; i < r.shape(0); i++) - for (size_t j = 0; j < r.shape(1); j++) - for (size_t k = 0; k < r.shape(2); k++) + for (ssize_t i = 0; i < r.shape(0); i++) + for (ssize_t j = 0; j < r.shape(1); j++) + for (ssize_t k = 0; k < r.shape(2); k++) r(i, j, k) = start++; return a; }); @@ -264,4 +255,41 @@ test_initializer numpy_array([](py::module &m) { sm.def("array_auxiliaries2", [](py::array_t<double> a) { return auxiliaries(a, a); }); -}); + + // test_array_failures + // Issue #785: Uninformative "Unknown internal error" exception when constructing array from empty object: + sm.def("array_fail_test", []() { return py::array(py::object()); }); + sm.def("array_t_fail_test", []() { return py::array_t<double>(py::object()); }); + // Make sure the error from numpy is being passed through: + sm.def("array_fail_test_negative_size", []() { int c = 0; return py::array(-1, &c); }); + + // test_initializer_list + // Issue (unnumbered; reported in #788): regression: initializer lists can be ambiguous + sm.def("array_initializer_list1", []() { return py::array_t<float>(1); }); // { 1 } also works, but clang warns about it + sm.def("array_initializer_list2", []() { return py::array_t<float>({ 1, 2 }); }); + sm.def("array_initializer_list3", []() { return py::array_t<float>({ 1, 2, 3 }); }); + sm.def("array_initializer_list4", []() { return py::array_t<float>({ 1, 2, 3, 4 }); }); + + // test_array_resize + // reshape array to 2D without changing size + sm.def("array_reshape2", [](py::array_t<double> a) { + const ssize_t dim_sz = (ssize_t)std::sqrt(a.size()); + if (dim_sz * dim_sz != a.size()) + throw std::domain_error("array_reshape2: input array total size is not a squared integer"); + a.resize({dim_sz, dim_sz}); + }); + + // resize to 3D array with each dimension = N + sm.def("array_resize3", [](py::array_t<double> a, size_t N, bool refcheck) { + a.resize({N, N, N}, refcheck); + }); + + // test_array_create_and_resize + // return 2D array with Nrows = Ncols = N + sm.def("create_and_resize", [](size_t N) { + py::array_t<double> a; + a.resize({N, N}); + std::fill(a.mutable_data(), a.mutable_data() + a.size(), 42.); + return a; + }); +} diff --git a/ext/pybind11/tests/test_numpy_array.py b/ext/pybind11/tests/test_numpy_array.py index 14c25b371..27433934f 100644 --- a/ext/pybind11/tests/test_numpy_array.py +++ b/ext/pybind11/tests/test_numpy_array.py @@ -1,4 +1,5 @@ import pytest +from pybind11_tests import numpy_array as m pytestmark = pytest.requires_numpy @@ -12,62 +13,55 @@ def arr(): def test_array_attributes(): - from pybind11_tests.array import ( - ndim, shape, strides, writeable, size, itemsize, nbytes, owndata - ) - a = np.array(0, 'f8') - assert ndim(a) == 0 - assert all(shape(a) == []) - assert all(strides(a) == []) + assert m.ndim(a) == 0 + assert all(m.shape(a) == []) + assert all(m.strides(a) == []) with pytest.raises(IndexError) as excinfo: - shape(a, 0) + m.shape(a, 0) assert str(excinfo.value) == 'invalid axis: 0 (ndim = 0)' with pytest.raises(IndexError) as excinfo: - strides(a, 0) + m.strides(a, 0) assert str(excinfo.value) == 'invalid axis: 0 (ndim = 0)' - assert writeable(a) - assert size(a) == 1 - assert itemsize(a) == 8 - assert nbytes(a) == 8 - assert owndata(a) + assert m.writeable(a) + assert m.size(a) == 1 + assert m.itemsize(a) == 8 + assert m.nbytes(a) == 8 + assert m.owndata(a) a = np.array([[1, 2, 3], [4, 5, 6]], 'u2').view() a.flags.writeable = False - assert ndim(a) == 2 - assert all(shape(a) == [2, 3]) - assert shape(a, 0) == 2 - assert shape(a, 1) == 3 - assert all(strides(a) == [6, 2]) - assert strides(a, 0) == 6 - assert strides(a, 1) == 2 + assert m.ndim(a) == 2 + assert all(m.shape(a) == [2, 3]) + assert m.shape(a, 0) == 2 + assert m.shape(a, 1) == 3 + assert all(m.strides(a) == [6, 2]) + assert m.strides(a, 0) == 6 + assert m.strides(a, 1) == 2 with pytest.raises(IndexError) as excinfo: - shape(a, 2) + m.shape(a, 2) assert str(excinfo.value) == 'invalid axis: 2 (ndim = 2)' with pytest.raises(IndexError) as excinfo: - strides(a, 2) + m.strides(a, 2) assert str(excinfo.value) == 'invalid axis: 2 (ndim = 2)' - assert not writeable(a) - assert size(a) == 6 - assert itemsize(a) == 2 - assert nbytes(a) == 12 - assert not owndata(a) + assert not m.writeable(a) + assert m.size(a) == 6 + assert m.itemsize(a) == 2 + assert m.nbytes(a) == 12 + assert not m.owndata(a) @pytest.mark.parametrize('args, ret', [([], 0), ([0], 0), ([1], 3), ([0, 1], 1), ([1, 2], 5)]) def test_index_offset(arr, args, ret): - from pybind11_tests.array import index_at, index_at_t, offset_at, offset_at_t - assert index_at(arr, *args) == ret - assert index_at_t(arr, *args) == ret - assert offset_at(arr, *args) == ret * arr.dtype.itemsize - assert offset_at_t(arr, *args) == ret * arr.dtype.itemsize + assert m.index_at(arr, *args) == ret + assert m.index_at_t(arr, *args) == ret + assert m.offset_at(arr, *args) == ret * arr.dtype.itemsize + assert m.offset_at_t(arr, *args) == ret * arr.dtype.itemsize def test_dim_check_fail(arr): - from pybind11_tests.array import (index_at, index_at_t, offset_at, offset_at_t, data, data_t, - mutate_data, mutate_data_t) - for func in (index_at, index_at_t, offset_at, offset_at_t, data, data_t, - mutate_data, mutate_data_t): + for func in (m.index_at, m.index_at_t, m.offset_at, m.offset_at_t, m.data, m.data_t, + m.mutate_data, m.mutate_data_t): with pytest.raises(IndexError) as excinfo: func(arr, 1, 2, 3) assert str(excinfo.value) == 'too many indices for an array: 3 (ndim = 2)' @@ -79,63 +73,53 @@ def test_dim_check_fail(arr): ([0, 1], [2, 3, 4, 5, 6]), ([1, 2], [6])]) def test_data(arr, args, ret): - from pybind11_tests.array import data, data_t from sys import byteorder - assert all(data_t(arr, *args) == ret) - assert all(data(arr, *args)[(0 if byteorder == 'little' else 1)::2] == ret) - assert all(data(arr, *args)[(1 if byteorder == 'little' else 0)::2] == 0) - - -def test_mutate_readonly(arr): - from pybind11_tests.array import mutate_data, mutate_data_t, mutate_at_t - arr.flags.writeable = False - for func, args in (mutate_data, ()), (mutate_data_t, ()), (mutate_at_t, (0, 0)): - with pytest.raises(ValueError) as excinfo: - func(arr, *args) - assert str(excinfo.value) == 'array is not writeable' + assert all(m.data_t(arr, *args) == ret) + assert all(m.data(arr, *args)[(0 if byteorder == 'little' else 1)::2] == ret) + assert all(m.data(arr, *args)[(1 if byteorder == 'little' else 0)::2] == 0) @pytest.mark.parametrize('dim', [0, 1, 3]) def test_at_fail(arr, dim): - from pybind11_tests.array import at_t, mutate_at_t - for func in at_t, mutate_at_t: + for func in m.at_t, m.mutate_at_t: with pytest.raises(IndexError) as excinfo: func(arr, *([0] * dim)) assert str(excinfo.value) == 'index dimension mismatch: {} (ndim = 2)'.format(dim) def test_at(arr): - from pybind11_tests.array import at_t, mutate_at_t + assert m.at_t(arr, 0, 2) == 3 + assert m.at_t(arr, 1, 0) == 4 - assert at_t(arr, 0, 2) == 3 - assert at_t(arr, 1, 0) == 4 + assert all(m.mutate_at_t(arr, 0, 2).ravel() == [1, 2, 4, 4, 5, 6]) + assert all(m.mutate_at_t(arr, 1, 0).ravel() == [1, 2, 4, 5, 5, 6]) - assert all(mutate_at_t(arr, 0, 2).ravel() == [1, 2, 4, 4, 5, 6]) - assert all(mutate_at_t(arr, 1, 0).ravel() == [1, 2, 4, 5, 5, 6]) +def test_mutate_readonly(arr): + arr.flags.writeable = False + for func, args in (m.mutate_data, ()), (m.mutate_data_t, ()), (m.mutate_at_t, (0, 0)): + with pytest.raises(ValueError) as excinfo: + func(arr, *args) + assert str(excinfo.value) == 'array is not writeable' -def test_mutate_data(arr): - from pybind11_tests.array import mutate_data, mutate_data_t - assert all(mutate_data(arr).ravel() == [2, 4, 6, 8, 10, 12]) - assert all(mutate_data(arr).ravel() == [4, 8, 12, 16, 20, 24]) - assert all(mutate_data(arr, 1).ravel() == [4, 8, 12, 32, 40, 48]) - assert all(mutate_data(arr, 0, 1).ravel() == [4, 16, 24, 64, 80, 96]) - assert all(mutate_data(arr, 1, 2).ravel() == [4, 16, 24, 64, 80, 192]) +def test_mutate_data(arr): + assert all(m.mutate_data(arr).ravel() == [2, 4, 6, 8, 10, 12]) + assert all(m.mutate_data(arr).ravel() == [4, 8, 12, 16, 20, 24]) + assert all(m.mutate_data(arr, 1).ravel() == [4, 8, 12, 32, 40, 48]) + assert all(m.mutate_data(arr, 0, 1).ravel() == [4, 16, 24, 64, 80, 96]) + assert all(m.mutate_data(arr, 1, 2).ravel() == [4, 16, 24, 64, 80, 192]) - assert all(mutate_data_t(arr).ravel() == [5, 17, 25, 65, 81, 193]) - assert all(mutate_data_t(arr).ravel() == [6, 18, 26, 66, 82, 194]) - assert all(mutate_data_t(arr, 1).ravel() == [6, 18, 26, 67, 83, 195]) - assert all(mutate_data_t(arr, 0, 1).ravel() == [6, 19, 27, 68, 84, 196]) - assert all(mutate_data_t(arr, 1, 2).ravel() == [6, 19, 27, 68, 84, 197]) + assert all(m.mutate_data_t(arr).ravel() == [5, 17, 25, 65, 81, 193]) + assert all(m.mutate_data_t(arr).ravel() == [6, 18, 26, 66, 82, 194]) + assert all(m.mutate_data_t(arr, 1).ravel() == [6, 18, 26, 67, 83, 195]) + assert all(m.mutate_data_t(arr, 0, 1).ravel() == [6, 19, 27, 68, 84, 196]) + assert all(m.mutate_data_t(arr, 1, 2).ravel() == [6, 19, 27, 68, 84, 197]) def test_bounds_check(arr): - from pybind11_tests.array import (index_at, index_at_t, data, data_t, - mutate_data, mutate_data_t, at_t, mutate_at_t) - funcs = (index_at, index_at_t, data, data_t, - mutate_data, mutate_data_t, at_t, mutate_at_t) - for func in funcs: + for func in (m.index_at, m.index_at_t, m.data, m.data_t, + m.mutate_data, m.mutate_data_t, m.at_t, m.mutate_at_t): with pytest.raises(IndexError) as excinfo: func(arr, 2, 0) assert str(excinfo.value) == 'index 2 is out of bounds for axis 0 with size 2' @@ -145,18 +129,13 @@ def test_bounds_check(arr): def test_make_c_f_array(): - from pybind11_tests.array import ( - make_c_array, make_f_array - ) - assert make_c_array().flags.c_contiguous - assert not make_c_array().flags.f_contiguous - assert make_f_array().flags.f_contiguous - assert not make_f_array().flags.c_contiguous + assert m.make_c_array().flags.c_contiguous + assert not m.make_c_array().flags.f_contiguous + assert m.make_f_array().flags.f_contiguous + assert not m.make_f_array().flags.c_contiguous def test_wrap(): - from pybind11_tests.array import wrap - def assert_references(a, b, base=None): if base is None: base = a @@ -178,36 +157,39 @@ def test_wrap(): a1 = np.array([1, 2], dtype=np.int16) assert a1.flags.owndata and a1.base is None - a2 = wrap(a1) + a2 = m.wrap(a1) assert_references(a1, a2) a1 = np.array([[1, 2], [3, 4]], dtype=np.float32, order='F') assert a1.flags.owndata and a1.base is None - a2 = wrap(a1) + a2 = m.wrap(a1) assert_references(a1, a2) a1 = np.array([[1, 2], [3, 4]], dtype=np.float32, order='C') a1.flags.writeable = False - a2 = wrap(a1) + a2 = m.wrap(a1) assert_references(a1, a2) a1 = np.random.random((4, 4, 4)) - a2 = wrap(a1) + a2 = m.wrap(a1) assert_references(a1, a2) a1t = a1.transpose() - a2 = wrap(a1t) + a2 = m.wrap(a1t) assert_references(a1t, a2, a1) a1d = a1.diagonal() - a2 = wrap(a1d) + a2 = m.wrap(a1d) assert_references(a1d, a2, a1) + a1m = a1[::-1, ::-1, ::-1] + a2 = m.wrap(a1m) + assert_references(a1m, a2, a1) + def test_numpy_view(capture): - from pybind11_tests.array import ArrayClass with capture: - ac = ArrayClass() + ac = m.ArrayClass() ac_view_1 = ac.numpy_view() ac_view_2 = ac.numpy_view() assert np.all(ac_view_1 == np.array([1, 2], dtype=np.int32)) @@ -234,29 +216,24 @@ def test_numpy_view(capture): @pytest.unsupported_on_pypy def test_cast_numpy_int64_to_uint64(): - from pybind11_tests.array import function_taking_uint64 - function_taking_uint64(123) - function_taking_uint64(np.uint64(123)) + m.function_taking_uint64(123) + m.function_taking_uint64(np.uint64(123)) def test_isinstance(): - from pybind11_tests.array import isinstance_untyped, isinstance_typed - - assert isinstance_untyped(np.array([1, 2, 3]), "not an array") - assert isinstance_typed(np.array([1.0, 2.0, 3.0])) + assert m.isinstance_untyped(np.array([1, 2, 3]), "not an array") + assert m.isinstance_typed(np.array([1.0, 2.0, 3.0])) def test_constructors(): - from pybind11_tests.array import default_constructors, converting_constructors - - defaults = default_constructors() + defaults = m.default_constructors() for a in defaults.values(): assert a.size == 0 assert defaults["array"].dtype == np.array([]).dtype assert defaults["array_t<int32>"].dtype == np.int32 assert defaults["array_t<double>"].dtype == np.float64 - results = converting_constructors([1, 2, 3]) + results = m.converting_constructors([1, 2, 3]) for a in results.values(): np.testing.assert_array_equal(a, [1, 2, 3]) assert results["array"].dtype == np.int_ @@ -265,22 +242,20 @@ def test_constructors(): def test_overload_resolution(msg): - from pybind11_tests.array import overloaded, overloaded2, overloaded3, overloaded4, overloaded5 - # Exact overload matches: - assert overloaded(np.array([1], dtype='float64')) == 'double' - assert overloaded(np.array([1], dtype='float32')) == 'float' - assert overloaded(np.array([1], dtype='ushort')) == 'unsigned short' - assert overloaded(np.array([1], dtype='intc')) == 'int' - assert overloaded(np.array([1], dtype='longlong')) == 'long long' - assert overloaded(np.array([1], dtype='complex')) == 'double complex' - assert overloaded(np.array([1], dtype='csingle')) == 'float complex' + assert m.overloaded(np.array([1], dtype='float64')) == 'double' + assert m.overloaded(np.array([1], dtype='float32')) == 'float' + assert m.overloaded(np.array([1], dtype='ushort')) == 'unsigned short' + assert m.overloaded(np.array([1], dtype='intc')) == 'int' + assert m.overloaded(np.array([1], dtype='longlong')) == 'long long' + assert m.overloaded(np.array([1], dtype='complex')) == 'double complex' + assert m.overloaded(np.array([1], dtype='csingle')) == 'float complex' # No exact match, should call first convertible version: - assert overloaded(np.array([1], dtype='uint8')) == 'double' + assert m.overloaded(np.array([1], dtype='uint8')) == 'double' with pytest.raises(TypeError) as excinfo: - overloaded("not an array") + m.overloaded("not an array") assert msg(excinfo.value) == """ overloaded(): incompatible function arguments. The following argument types are supported: 1. (arg0: numpy.ndarray[float64]) -> str @@ -294,14 +269,14 @@ def test_overload_resolution(msg): Invoked with: 'not an array' """ - assert overloaded2(np.array([1], dtype='float64')) == 'double' - assert overloaded2(np.array([1], dtype='float32')) == 'float' - assert overloaded2(np.array([1], dtype='complex64')) == 'float complex' - assert overloaded2(np.array([1], dtype='complex128')) == 'double complex' - assert overloaded2(np.array([1], dtype='float32')) == 'float' + assert m.overloaded2(np.array([1], dtype='float64')) == 'double' + assert m.overloaded2(np.array([1], dtype='float32')) == 'float' + assert m.overloaded2(np.array([1], dtype='complex64')) == 'float complex' + assert m.overloaded2(np.array([1], dtype='complex128')) == 'double complex' + assert m.overloaded2(np.array([1], dtype='float32')) == 'float' - assert overloaded3(np.array([1], dtype='float64')) == 'double' - assert overloaded3(np.array([1], dtype='intc')) == 'int' + assert m.overloaded3(np.array([1], dtype='float64')) == 'double' + assert m.overloaded3(np.array([1], dtype='intc')) == 'int' expected_exc = """ overloaded3(): incompatible function arguments. The following argument types are supported: 1. (arg0: numpy.ndarray[int32]) -> str @@ -310,70 +285,118 @@ def test_overload_resolution(msg): Invoked with:""" with pytest.raises(TypeError) as excinfo: - overloaded3(np.array([1], dtype='uintc')) + m.overloaded3(np.array([1], dtype='uintc')) assert msg(excinfo.value) == expected_exc + " array([1], dtype=uint32)" with pytest.raises(TypeError) as excinfo: - overloaded3(np.array([1], dtype='float32')) + m.overloaded3(np.array([1], dtype='float32')) assert msg(excinfo.value) == expected_exc + " array([ 1.], dtype=float32)" with pytest.raises(TypeError) as excinfo: - overloaded3(np.array([1], dtype='complex')) + m.overloaded3(np.array([1], dtype='complex')) assert msg(excinfo.value) == expected_exc + " array([ 1.+0.j])" # Exact matches: - assert overloaded4(np.array([1], dtype='double')) == 'double' - assert overloaded4(np.array([1], dtype='longlong')) == 'long long' + assert m.overloaded4(np.array([1], dtype='double')) == 'double' + assert m.overloaded4(np.array([1], dtype='longlong')) == 'long long' # Non-exact matches requiring conversion. Since float to integer isn't a # save conversion, it should go to the double overload, but short can go to # either (and so should end up on the first-registered, the long long). - assert overloaded4(np.array([1], dtype='float32')) == 'double' - assert overloaded4(np.array([1], dtype='short')) == 'long long' + assert m.overloaded4(np.array([1], dtype='float32')) == 'double' + assert m.overloaded4(np.array([1], dtype='short')) == 'long long' - assert overloaded5(np.array([1], dtype='double')) == 'double' - assert overloaded5(np.array([1], dtype='uintc')) == 'unsigned int' - assert overloaded5(np.array([1], dtype='float32')) == 'unsigned int' + assert m.overloaded5(np.array([1], dtype='double')) == 'double' + assert m.overloaded5(np.array([1], dtype='uintc')) == 'unsigned int' + assert m.overloaded5(np.array([1], dtype='float32')) == 'unsigned int' -def test_greedy_string_overload(): # issue 685 - from pybind11_tests.array import issue685 +def test_greedy_string_overload(): + """Tests fix for #685 - ndarray shouldn't go to std::string overload""" - assert issue685("abc") == "string" - assert issue685(np.array([97, 98, 99], dtype='b')) == "array" - assert issue685(123) == "other" + assert m.issue685("abc") == "string" + assert m.issue685(np.array([97, 98, 99], dtype='b')) == "array" + assert m.issue685(123) == "other" def test_array_unchecked_fixed_dims(msg): - from pybind11_tests.array import (proxy_add2, proxy_init3F, proxy_init3, proxy_squared_L2_norm, - proxy_auxiliaries2, array_auxiliaries2) - z1 = np.array([[1, 2], [3, 4]], dtype='float64') - proxy_add2(z1, 10) + m.proxy_add2(z1, 10) assert np.all(z1 == [[11, 12], [13, 14]]) with pytest.raises(ValueError) as excinfo: - proxy_add2(np.array([1., 2, 3]), 5.0) + m.proxy_add2(np.array([1., 2, 3]), 5.0) assert msg(excinfo.value) == "array has incorrect number of dimensions: 1; expected 2" expect_c = np.ndarray(shape=(3, 3, 3), buffer=np.array(range(3, 30)), dtype='int') - assert np.all(proxy_init3(3.0) == expect_c) + assert np.all(m.proxy_init3(3.0) == expect_c) expect_f = np.transpose(expect_c) - assert np.all(proxy_init3F(3.0) == expect_f) + assert np.all(m.proxy_init3F(3.0) == expect_f) - assert proxy_squared_L2_norm(np.array(range(6))) == 55 - assert proxy_squared_L2_norm(np.array(range(6), dtype="float64")) == 55 + assert m.proxy_squared_L2_norm(np.array(range(6))) == 55 + assert m.proxy_squared_L2_norm(np.array(range(6), dtype="float64")) == 55 - assert proxy_auxiliaries2(z1) == [11, 11, True, 2, 8, 2, 2, 4, 32] - assert proxy_auxiliaries2(z1) == array_auxiliaries2(z1) + assert m.proxy_auxiliaries2(z1) == [11, 11, True, 2, 8, 2, 2, 4, 32] + assert m.proxy_auxiliaries2(z1) == m.array_auxiliaries2(z1) def test_array_unchecked_dyn_dims(msg): - from pybind11_tests.array import (proxy_add2_dyn, proxy_init3_dyn, proxy_auxiliaries2_dyn, - array_auxiliaries2) z1 = np.array([[1, 2], [3, 4]], dtype='float64') - proxy_add2_dyn(z1, 10) + m.proxy_add2_dyn(z1, 10) assert np.all(z1 == [[11, 12], [13, 14]]) expect_c = np.ndarray(shape=(3, 3, 3), buffer=np.array(range(3, 30)), dtype='int') - assert np.all(proxy_init3_dyn(3.0) == expect_c) + assert np.all(m.proxy_init3_dyn(3.0) == expect_c) + + assert m.proxy_auxiliaries2_dyn(z1) == [11, 11, True, 2, 8, 2, 2, 4, 32] + assert m.proxy_auxiliaries2_dyn(z1) == m.array_auxiliaries2(z1) - assert proxy_auxiliaries2_dyn(z1) == [11, 11, True, 2, 8, 2, 2, 4, 32] - assert proxy_auxiliaries2_dyn(z1) == array_auxiliaries2(z1) + +def test_array_failure(): + with pytest.raises(ValueError) as excinfo: + m.array_fail_test() + assert str(excinfo.value) == 'cannot create a pybind11::array from a nullptr' + + with pytest.raises(ValueError) as excinfo: + m.array_t_fail_test() + assert str(excinfo.value) == 'cannot create a pybind11::array_t from a nullptr' + + with pytest.raises(ValueError) as excinfo: + m.array_fail_test_negative_size() + assert str(excinfo.value) == 'negative dimensions are not allowed' + + +def test_initializer_list(): + assert m.array_initializer_list1().shape == (1,) + assert m.array_initializer_list2().shape == (1, 2) + assert m.array_initializer_list3().shape == (1, 2, 3) + assert m.array_initializer_list4().shape == (1, 2, 3, 4) + + +def test_array_resize(msg): + a = np.array([1, 2, 3, 4, 5, 6, 7, 8, 9], dtype='float64') + m.array_reshape2(a) + assert(a.size == 9) + assert(np.all(a == [[1, 2, 3], [4, 5, 6], [7, 8, 9]])) + + # total size change should succced with refcheck off + m.array_resize3(a, 4, False) + assert(a.size == 64) + # ... and fail with refcheck on + try: + m.array_resize3(a, 3, True) + except ValueError as e: + assert(str(e).startswith("cannot resize an array")) + # transposed array doesn't own data + b = a.transpose() + try: + m.array_resize3(b, 3, False) + except ValueError as e: + assert(str(e).startswith("cannot resize this array: it does not own its data")) + # ... but reshape should be fine + m.array_reshape2(b) + assert(b.shape == (8, 8)) + + +@pytest.unsupported_on_pypy +def test_array_create_and_resize(msg): + a = m.create_and_resize(2) + assert(a.size == 4) + assert(np.all(a == 42.)) diff --git a/ext/pybind11/tests/test_numpy_dtypes.cpp b/ext/pybind11/tests/test_numpy_dtypes.cpp index 1f6c85704..ddec851f6 100644 --- a/ext/pybind11/tests/test_numpy_dtypes.cpp +++ b/ext/pybind11/tests/test_numpy_dtypes.cpp @@ -70,6 +70,22 @@ struct StringStruct { std::array<char, 3> b; }; +struct ComplexStruct { + std::complex<float> cflt; + std::complex<double> cdbl; +}; + +std::ostream& operator<<(std::ostream& os, const ComplexStruct& v) { + return os << "c:" << v.cflt << "," << v.cdbl; +} + +struct ArrayStruct { + char a[3][4]; + int32_t b[2]; + std::array<uint8_t, 3> c; + std::array<float, 2> d[4]; +}; + PYBIND11_PACKED(struct StructWithUglyNames { int8_t __x__; uint64_t __y__; @@ -91,6 +107,27 @@ std::ostream& operator<<(std::ostream& os, const StringStruct& v) { return os << "'"; } +std::ostream& operator<<(std::ostream& os, const ArrayStruct& v) { + os << "a={"; + for (int i = 0; i < 3; i++) { + if (i > 0) + os << ','; + os << '{'; + for (int j = 0; j < 3; j++) + os << v.a[i][j] << ','; + os << v.a[i][3] << '}'; + } + os << "},b={" << v.b[0] << ',' << v.b[1]; + os << "},c={" << int(v.c[0]) << ',' << int(v.c[1]) << ',' << int(v.c[2]); + os << "},d={"; + for (int i = 0; i < 4; i++) { + if (i > 0) + os << ','; + os << '{' << v.d[i][0] << ',' << v.d[i][1] << '}'; + } + return os << '}'; +} + std::ostream& operator<<(std::ostream& os, const EnumStruct& v) { return os << "e1=" << (v.e1 == E1::A ? "A" : "B") << ",e2=" << (v.e2 == E2::X ? "X" : "Y"); } @@ -119,66 +156,12 @@ py::array_t<S, 0> create_recarray(size_t n) { return arr; } -std::string get_format_unbound() { - return py::format_descriptor<UnboundStruct>::format(); -} - -py::array_t<NestedStruct, 0> create_nested(size_t n) { - auto arr = mkarray_via_buffer<NestedStruct>(n); - auto req = arr.request(); - auto ptr = static_cast<NestedStruct*>(req.ptr); - for (size_t i = 0; i < n; i++) { - SET_TEST_VALS(ptr[i].a, i); - SET_TEST_VALS(ptr[i].b, i + 1); - } - return arr; -} - -py::array_t<PartialNestedStruct, 0> create_partial_nested(size_t n) { - auto arr = mkarray_via_buffer<PartialNestedStruct>(n); - auto req = arr.request(); - auto ptr = static_cast<PartialNestedStruct*>(req.ptr); - for (size_t i = 0; i < n; i++) { - SET_TEST_VALS(ptr[i].a, i); - } - return arr; -} - -py::array_t<StringStruct, 0> create_string_array(bool non_empty) { - auto arr = mkarray_via_buffer<StringStruct>(non_empty ? 4 : 0); - if (non_empty) { - auto req = arr.request(); - auto ptr = static_cast<StringStruct*>(req.ptr); - for (size_t i = 0; i < req.size * req.itemsize; i++) - static_cast<char*>(req.ptr)[i] = 0; - ptr[1].a[0] = 'a'; ptr[1].b[0] = 'a'; - ptr[2].a[0] = 'a'; ptr[2].b[0] = 'a'; - ptr[3].a[0] = 'a'; ptr[3].b[0] = 'a'; - - ptr[2].a[1] = 'b'; ptr[2].b[1] = 'b'; - ptr[3].a[1] = 'b'; ptr[3].b[1] = 'b'; - - ptr[3].a[2] = 'c'; ptr[3].b[2] = 'c'; - } - return arr; -} - -py::array_t<EnumStruct, 0> create_enum_array(size_t n) { - auto arr = mkarray_via_buffer<EnumStruct>(n); - auto ptr = (EnumStruct *) arr.mutable_data(); - for (size_t i = 0; i < n; i++) { - ptr[i].e1 = static_cast<E1>(-1 + ((int) i % 2) * 2); - ptr[i].e2 = static_cast<E2>(1 + (i % 2)); - } - return arr; -} - template <typename S> py::list print_recarray(py::array_t<S, 0> arr) { const auto req = arr.request(); const auto ptr = static_cast<S*>(req.ptr); auto l = py::list(); - for (size_t i = 0; i < req.size; i++) { + for (ssize_t i = 0; i < req.size; i++) { std::stringstream ss; ss << ptr[i]; l.append(py::str(ss.str())); @@ -186,47 +169,12 @@ py::list print_recarray(py::array_t<S, 0> arr) { return l; } -py::list print_format_descriptors() { - const auto fmts = { - py::format_descriptor<SimpleStruct>::format(), - py::format_descriptor<PackedStruct>::format(), - py::format_descriptor<NestedStruct>::format(), - py::format_descriptor<PartialStruct>::format(), - py::format_descriptor<PartialNestedStruct>::format(), - py::format_descriptor<StringStruct>::format(), - py::format_descriptor<EnumStruct>::format() - }; - auto l = py::list(); - for (const auto &fmt : fmts) { - l.append(py::cast(fmt)); - } - return l; -} - -py::list print_dtypes() { - const auto dtypes = { - py::str(py::dtype::of<SimpleStruct>()), - py::str(py::dtype::of<PackedStruct>()), - py::str(py::dtype::of<NestedStruct>()), - py::str(py::dtype::of<PartialStruct>()), - py::str(py::dtype::of<PartialNestedStruct>()), - py::str(py::dtype::of<StringStruct>()), - py::str(py::dtype::of<EnumStruct>()), - py::str(py::dtype::of<StructWithUglyNames>()) - }; - auto l = py::list(); - for (const auto &s : dtypes) { - l.append(s); - } - return l; -} - py::array_t<int32_t, 0> test_array_ctors(int i) { using arr_t = py::array_t<int32_t, 0>; std::vector<int32_t> data { 1, 2, 3, 4, 5, 6 }; - std::vector<size_t> shape { 3, 2 }; - std::vector<size_t> strides { 8, 4 }; + std::vector<ssize_t> shape { 3, 2 }; + std::vector<ssize_t> strides { 8, 4 }; auto ptr = data.data(); auto vptr = (void *) ptr; @@ -296,51 +244,9 @@ py::list test_dtype_ctors() { return list; } -struct TrailingPaddingStruct { - int32_t a; - char b; -}; - -py::dtype trailing_padding_dtype() { - return py::dtype::of<TrailingPaddingStruct>(); -} - -py::dtype buffer_to_dtype(py::buffer& buf) { - return py::dtype(buf.request()); -} - -py::list test_dtype_methods() { - py::list list; - auto dt1 = py::dtype::of<int32_t>(); - auto dt2 = py::dtype::of<SimpleStruct>(); - list.append(dt1); list.append(dt2); - list.append(py::bool_(dt1.has_fields())); list.append(py::bool_(dt2.has_fields())); - list.append(py::int_(dt1.itemsize())); list.append(py::int_(dt2.itemsize())); - return list; -} - -struct CompareStruct { - bool x; - uint32_t y; - float z; -}; - -py::list test_compare_buffer_info() { - py::list list; - list.append(py::bool_(py::detail::compare_buffer_info<float>::compare(py::buffer_info(nullptr, sizeof(float), "f", 1)))); - list.append(py::bool_(py::detail::compare_buffer_info<unsigned>::compare(py::buffer_info(nullptr, sizeof(int), "I", 1)))); - list.append(py::bool_(py::detail::compare_buffer_info<long>::compare(py::buffer_info(nullptr, sizeof(long), "l", 1)))); - list.append(py::bool_(py::detail::compare_buffer_info<long>::compare(py::buffer_info(nullptr, sizeof(long), sizeof(long) == sizeof(int) ? "i" : "q", 1)))); - list.append(py::bool_(py::detail::compare_buffer_info<CompareStruct>::compare(py::buffer_info(nullptr, sizeof(CompareStruct), "T{?:x:3xI:y:f:z:}", 1)))); - return list; -} - -test_initializer numpy_dtypes([](py::module &m) { - try { - py::module::import("numpy"); - } catch (...) { - return; - } +TEST_SUBMODULE(numpy_dtypes, m) { + try { py::module::import("numpy"); } + catch (...) { return; } // typeinfo may be registered before the dtype descriptor for scalar casts to work... py::class_<SimpleStruct>(m, "SimpleStruct"); @@ -351,9 +257,9 @@ test_initializer numpy_dtypes([](py::module &m) { PYBIND11_NUMPY_DTYPE(PartialStruct, bool_, uint_, float_, ldbl_); PYBIND11_NUMPY_DTYPE(PartialNestedStruct, a); PYBIND11_NUMPY_DTYPE(StringStruct, a, b); + PYBIND11_NUMPY_DTYPE(ArrayStruct, a, b, c, d); PYBIND11_NUMPY_DTYPE(EnumStruct, e1, e2); - PYBIND11_NUMPY_DTYPE(TrailingPaddingStruct, a, b); - PYBIND11_NUMPY_DTYPE(CompareStruct, x, y, z); + PYBIND11_NUMPY_DTYPE(ComplexStruct, cflt, cdbl); // ... or after py::class_<PackedStruct>(m, "PackedStruct"); @@ -365,31 +271,181 @@ test_initializer numpy_dtypes([](py::module &m) { // struct NotPOD { std::string v; NotPOD() : v("hi") {}; }; // PYBIND11_NUMPY_DTYPE(NotPOD, v); + // test_recarray, test_scalar_conversion m.def("create_rec_simple", &create_recarray<SimpleStruct>); m.def("create_rec_packed", &create_recarray<PackedStruct>); - m.def("create_rec_nested", &create_nested); + m.def("create_rec_nested", [](size_t n) { // test_signature + py::array_t<NestedStruct, 0> arr = mkarray_via_buffer<NestedStruct>(n); + auto req = arr.request(); + auto ptr = static_cast<NestedStruct*>(req.ptr); + for (size_t i = 0; i < n; i++) { + SET_TEST_VALS(ptr[i].a, i); + SET_TEST_VALS(ptr[i].b, i + 1); + } + return arr; + }); m.def("create_rec_partial", &create_recarray<PartialStruct>); - m.def("create_rec_partial_nested", &create_partial_nested); - m.def("print_format_descriptors", &print_format_descriptors); + m.def("create_rec_partial_nested", [](size_t n) { + py::array_t<PartialNestedStruct, 0> arr = mkarray_via_buffer<PartialNestedStruct>(n); + auto req = arr.request(); + auto ptr = static_cast<PartialNestedStruct*>(req.ptr); + for (size_t i = 0; i < n; i++) { + SET_TEST_VALS(ptr[i].a, i); + } + return arr; + }); m.def("print_rec_simple", &print_recarray<SimpleStruct>); m.def("print_rec_packed", &print_recarray<PackedStruct>); m.def("print_rec_nested", &print_recarray<NestedStruct>); - m.def("print_dtypes", &print_dtypes); - m.def("get_format_unbound", &get_format_unbound); - m.def("create_string_array", &create_string_array); + + // test_format_descriptors + m.def("get_format_unbound", []() { return py::format_descriptor<UnboundStruct>::format(); }); + m.def("print_format_descriptors", []() { + py::list l; + for (const auto &fmt : { + py::format_descriptor<SimpleStruct>::format(), + py::format_descriptor<PackedStruct>::format(), + py::format_descriptor<NestedStruct>::format(), + py::format_descriptor<PartialStruct>::format(), + py::format_descriptor<PartialNestedStruct>::format(), + py::format_descriptor<StringStruct>::format(), + py::format_descriptor<ArrayStruct>::format(), + py::format_descriptor<EnumStruct>::format(), + py::format_descriptor<ComplexStruct>::format() + }) { + l.append(py::cast(fmt)); + } + return l; + }); + + // test_dtype + m.def("print_dtypes", []() { + py::list l; + for (const py::handle &d : { + py::dtype::of<SimpleStruct>(), + py::dtype::of<PackedStruct>(), + py::dtype::of<NestedStruct>(), + py::dtype::of<PartialStruct>(), + py::dtype::of<PartialNestedStruct>(), + py::dtype::of<StringStruct>(), + py::dtype::of<ArrayStruct>(), + py::dtype::of<EnumStruct>(), + py::dtype::of<StructWithUglyNames>(), + py::dtype::of<ComplexStruct>() + }) + l.append(py::str(d)); + return l; + }); + m.def("test_dtype_ctors", &test_dtype_ctors); + m.def("test_dtype_methods", []() { + py::list list; + auto dt1 = py::dtype::of<int32_t>(); + auto dt2 = py::dtype::of<SimpleStruct>(); + list.append(dt1); list.append(dt2); + list.append(py::bool_(dt1.has_fields())); list.append(py::bool_(dt2.has_fields())); + list.append(py::int_(dt1.itemsize())); list.append(py::int_(dt2.itemsize())); + return list; + }); + struct TrailingPaddingStruct { + int32_t a; + char b; + }; + PYBIND11_NUMPY_DTYPE(TrailingPaddingStruct, a, b); + m.def("trailing_padding_dtype", []() { return py::dtype::of<TrailingPaddingStruct>(); }); + + // test_string_array + m.def("create_string_array", [](bool non_empty) { + py::array_t<StringStruct, 0> arr = mkarray_via_buffer<StringStruct>(non_empty ? 4 : 0); + if (non_empty) { + auto req = arr.request(); + auto ptr = static_cast<StringStruct*>(req.ptr); + for (ssize_t i = 0; i < req.size * req.itemsize; i++) + static_cast<char*>(req.ptr)[i] = 0; + ptr[1].a[0] = 'a'; ptr[1].b[0] = 'a'; + ptr[2].a[0] = 'a'; ptr[2].b[0] = 'a'; + ptr[3].a[0] = 'a'; ptr[3].b[0] = 'a'; + + ptr[2].a[1] = 'b'; ptr[2].b[1] = 'b'; + ptr[3].a[1] = 'b'; ptr[3].b[1] = 'b'; + + ptr[3].a[2] = 'c'; ptr[3].b[2] = 'c'; + } + return arr; + }); m.def("print_string_array", &print_recarray<StringStruct>); - m.def("create_enum_array", &create_enum_array); + + // test_array_array + m.def("create_array_array", [](size_t n) { + py::array_t<ArrayStruct, 0> arr = mkarray_via_buffer<ArrayStruct>(n); + auto ptr = (ArrayStruct *) arr.mutable_data(); + for (size_t i = 0; i < n; i++) { + for (size_t j = 0; j < 3; j++) + for (size_t k = 0; k < 4; k++) + ptr[i].a[j][k] = char('A' + (i * 100 + j * 10 + k) % 26); + for (size_t j = 0; j < 2; j++) + ptr[i].b[j] = int32_t(i * 1000 + j); + for (size_t j = 0; j < 3; j++) + ptr[i].c[j] = uint8_t(i * 10 + j); + for (size_t j = 0; j < 4; j++) + for (size_t k = 0; k < 2; k++) + ptr[i].d[j][k] = float(i) * 100.0f + float(j) * 10.0f + float(k); + } + return arr; + }); + m.def("print_array_array", &print_recarray<ArrayStruct>); + + // test_enum_array + m.def("create_enum_array", [](size_t n) { + py::array_t<EnumStruct, 0> arr = mkarray_via_buffer<EnumStruct>(n); + auto ptr = (EnumStruct *) arr.mutable_data(); + for (size_t i = 0; i < n; i++) { + ptr[i].e1 = static_cast<E1>(-1 + ((int) i % 2) * 2); + ptr[i].e2 = static_cast<E2>(1 + (i % 2)); + } + return arr; + }); m.def("print_enum_array", &print_recarray<EnumStruct>); + + // test_complex_array + m.def("create_complex_array", [](size_t n) { + py::array_t<ComplexStruct, 0> arr = mkarray_via_buffer<ComplexStruct>(n); + auto ptr = (ComplexStruct *) arr.mutable_data(); + for (size_t i = 0; i < n; i++) { + ptr[i].cflt.real(float(i)); + ptr[i].cflt.imag(float(i) + 0.25f); + ptr[i].cdbl.real(double(i) + 0.5); + ptr[i].cdbl.imag(double(i) + 0.75); + } + return arr; + }); + m.def("print_complex_array", &print_recarray<ComplexStruct>); + + // test_array_constructors m.def("test_array_ctors", &test_array_ctors); - m.def("test_dtype_ctors", &test_dtype_ctors); - m.def("test_dtype_methods", &test_dtype_methods); - m.def("compare_buffer_info", &test_compare_buffer_info); - m.def("trailing_padding_dtype", &trailing_padding_dtype); - m.def("buffer_to_dtype", &buffer_to_dtype); + + // test_compare_buffer_info + struct CompareStruct { + bool x; + uint32_t y; + float z; + }; + PYBIND11_NUMPY_DTYPE(CompareStruct, x, y, z); + m.def("compare_buffer_info", []() { + py::list list; + list.append(py::bool_(py::detail::compare_buffer_info<float>::compare(py::buffer_info(nullptr, sizeof(float), "f", 1)))); + list.append(py::bool_(py::detail::compare_buffer_info<unsigned>::compare(py::buffer_info(nullptr, sizeof(int), "I", 1)))); + list.append(py::bool_(py::detail::compare_buffer_info<long>::compare(py::buffer_info(nullptr, sizeof(long), "l", 1)))); + list.append(py::bool_(py::detail::compare_buffer_info<long>::compare(py::buffer_info(nullptr, sizeof(long), sizeof(long) == sizeof(int) ? "i" : "q", 1)))); + list.append(py::bool_(py::detail::compare_buffer_info<CompareStruct>::compare(py::buffer_info(nullptr, sizeof(CompareStruct), "T{?:x:3xI:y:f:z:}", 1)))); + return list; + }); + m.def("buffer_to_dtype", [](py::buffer& buf) { return py::dtype(buf.request()); }); + + // test_scalar_conversion m.def("f_simple", [](SimpleStruct s) { return s.uint_ * 10; }); m.def("f_packed", [](PackedStruct s) { return s.uint_ * 10; }); m.def("f_nested", [](NestedStruct s) { return s.a.uint_ * 10; }); - m.def("register_dtype", []() { PYBIND11_NUMPY_DTYPE(SimpleStruct, bool_, uint_, float_, ldbl_); }); -}); -#undef PYBIND11_PACKED + // test_register_dtype + m.def("register_dtype", []() { PYBIND11_NUMPY_DTYPE(SimpleStruct, bool_, uint_, float_, ldbl_); }); +} diff --git a/ext/pybind11/tests/test_numpy_dtypes.py b/ext/pybind11/tests/test_numpy_dtypes.py index f63814f9d..5f9a95404 100644 --- a/ext/pybind11/tests/test_numpy_dtypes.py +++ b/ext/pybind11/tests/test_numpy_dtypes.py @@ -1,5 +1,6 @@ import re import pytest +from pybind11_tests import numpy_dtypes as m pytestmark = pytest.requires_numpy @@ -65,68 +66,66 @@ def assert_equal(actual, expected_data, expected_dtype): def test_format_descriptors(): - from pybind11_tests import get_format_unbound, print_format_descriptors - with pytest.raises(RuntimeError) as excinfo: - get_format_unbound() + m.get_format_unbound() assert re.match('^NumPy type info missing for .*UnboundStruct.*$', str(excinfo.value)) ld = np.dtype('longdouble') ldbl_fmt = ('4x' if ld.alignment > 4 else '') + ld.char - ss_fmt = "T{?:bool_:3xI:uint_:f:float_:" + ldbl_fmt + ":ldbl_:}" + ss_fmt = "^T{?:bool_:3xI:uint_:f:float_:" + ldbl_fmt + ":ldbl_:}" dbl = np.dtype('double') - partial_fmt = ("T{?:bool_:3xI:uint_:f:float_:" + + partial_fmt = ("^T{?:bool_:3xI:uint_:f:float_:" + str(4 * (dbl.alignment > 4) + dbl.itemsize + 8 * (ld.alignment > 8)) + "xg:ldbl_:}") nested_extra = str(max(8, ld.alignment)) - assert print_format_descriptors() == [ + assert m.print_format_descriptors() == [ ss_fmt, - "T{?:bool_:^I:uint_:^f:float_:^g:ldbl_:}", - "T{" + ss_fmt + ":a:T{?:bool_:^I:uint_:^f:float_:^g:ldbl_:}:b:}", + "^T{?:bool_:I:uint_:f:float_:g:ldbl_:}", + "^T{" + ss_fmt + ":a:^T{?:bool_:I:uint_:f:float_:g:ldbl_:}:b:}", partial_fmt, - "T{" + nested_extra + "x" + partial_fmt + ":a:" + nested_extra + "x}", - "T{3s:a:3s:b:}", - 'T{q:e1:B:e2:}' + "^T{" + nested_extra + "x" + partial_fmt + ":a:" + nested_extra + "x}", + "^T{3s:a:3s:b:}", + "^T{(3)4s:a:(2)i:b:(3)B:c:1x(4, 2)f:d:}", + '^T{q:e1:B:e2:}', + '^T{Zf:cflt:Zd:cdbl:}' ] def test_dtype(simple_dtype): - from pybind11_tests import (print_dtypes, test_dtype_ctors, test_dtype_methods, - trailing_padding_dtype, buffer_to_dtype) from sys import byteorder e = '<' if byteorder == 'little' else '>' - assert print_dtypes() == [ + assert m.print_dtypes() == [ simple_dtype_fmt(), packed_dtype_fmt(), "[('a', {}), ('b', {})]".format(simple_dtype_fmt(), packed_dtype_fmt()), partial_dtype_fmt(), partial_nested_fmt(), "[('a', 'S3'), ('b', 'S3')]", + ("{{'names':['a','b','c','d'], " + + "'formats':[('S4', (3,)),('<i4', (2,)),('u1', (3,)),('<f4', (4, 2))], " + + "'offsets':[0,12,20,24], 'itemsize':56}}").format(e=e), "[('e1', '" + e + "i8'), ('e2', 'u1')]", - "[('x', 'i1'), ('y', '" + e + "u8')]" + "[('x', 'i1'), ('y', '" + e + "u8')]", + "[('cflt', '" + e + "c8'), ('cdbl', '" + e + "c16')]" ] d1 = np.dtype({'names': ['a', 'b'], 'formats': ['int32', 'float64'], 'offsets': [1, 10], 'itemsize': 20}) d2 = np.dtype([('a', 'i4'), ('b', 'f4')]) - assert test_dtype_ctors() == [np.dtype('int32'), np.dtype('float64'), - np.dtype('bool'), d1, d1, np.dtype('uint32'), d2] + assert m.test_dtype_ctors() == [np.dtype('int32'), np.dtype('float64'), + np.dtype('bool'), d1, d1, np.dtype('uint32'), d2] - assert test_dtype_methods() == [np.dtype('int32'), simple_dtype, False, True, - np.dtype('int32').itemsize, simple_dtype.itemsize] + assert m.test_dtype_methods() == [np.dtype('int32'), simple_dtype, False, True, + np.dtype('int32').itemsize, simple_dtype.itemsize] - assert trailing_padding_dtype() == buffer_to_dtype(np.zeros(1, trailing_padding_dtype())) + assert m.trailing_padding_dtype() == m.buffer_to_dtype(np.zeros(1, m.trailing_padding_dtype())) def test_recarray(simple_dtype, packed_dtype): - from pybind11_tests import (create_rec_simple, create_rec_packed, create_rec_nested, - print_rec_simple, print_rec_packed, print_rec_nested, - create_rec_partial, create_rec_partial_nested) - elements = [(False, 0, 0.0, -0.0), (True, 1, 1.5, -2.5), (False, 2, 3.0, -5.0)] - for func, dtype in [(create_rec_simple, simple_dtype), (create_rec_packed, packed_dtype)]: + for func, dtype in [(m.create_rec_simple, simple_dtype), (m.create_rec_packed, packed_dtype)]: arr = func(0) assert arr.dtype == dtype assert_equal(arr, [], simple_dtype) @@ -138,13 +137,13 @@ def test_recarray(simple_dtype, packed_dtype): assert_equal(arr, elements, packed_dtype) if dtype == simple_dtype: - assert print_rec_simple(arr) == [ + assert m.print_rec_simple(arr) == [ "s:0,0,0,-0", "s:1,1,1.5,-2.5", "s:0,2,3,-5" ] else: - assert print_rec_packed(arr) == [ + assert m.print_rec_packed(arr) == [ "p:0,0,0,-0", "p:1,1,1.5,-2.5", "p:0,2,3,-5" @@ -152,22 +151,22 @@ def test_recarray(simple_dtype, packed_dtype): nested_dtype = np.dtype([('a', simple_dtype), ('b', packed_dtype)]) - arr = create_rec_nested(0) + arr = m.create_rec_nested(0) assert arr.dtype == nested_dtype assert_equal(arr, [], nested_dtype) - arr = create_rec_nested(3) + arr = m.create_rec_nested(3) assert arr.dtype == nested_dtype assert_equal(arr, [((False, 0, 0.0, -0.0), (True, 1, 1.5, -2.5)), ((True, 1, 1.5, -2.5), (False, 2, 3.0, -5.0)), ((False, 2, 3.0, -5.0), (True, 3, 4.5, -7.5))], nested_dtype) - assert print_rec_nested(arr) == [ + assert m.print_rec_nested(arr) == [ "n:a=s:0,0,0,-0;b=p:1,1,1.5,-2.5", "n:a=s:1,1,1.5,-2.5;b=p:0,2,3,-5", "n:a=s:0,2,3,-5;b=p:1,3,4.5,-7.5" ] - arr = create_rec_partial(3) + arr = m.create_rec_partial(3) assert str(arr.dtype) == partial_dtype_fmt() partial_dtype = arr.dtype assert '' not in arr.dtype.fields @@ -175,32 +174,28 @@ def test_recarray(simple_dtype, packed_dtype): assert_equal(arr, elements, simple_dtype) assert_equal(arr, elements, packed_dtype) - arr = create_rec_partial_nested(3) + arr = m.create_rec_partial_nested(3) assert str(arr.dtype) == partial_nested_fmt() assert '' not in arr.dtype.fields assert '' not in arr.dtype.fields['a'][0].fields assert arr.dtype.itemsize > partial_dtype.itemsize - np.testing.assert_equal(arr['a'], create_rec_partial(3)) + np.testing.assert_equal(arr['a'], m.create_rec_partial(3)) def test_array_constructors(): - from pybind11_tests import test_array_ctors - data = np.arange(1, 7, dtype='int32') for i in range(8): - np.testing.assert_array_equal(test_array_ctors(10 + i), data.reshape((3, 2))) - np.testing.assert_array_equal(test_array_ctors(20 + i), data.reshape((3, 2))) + np.testing.assert_array_equal(m.test_array_ctors(10 + i), data.reshape((3, 2))) + np.testing.assert_array_equal(m.test_array_ctors(20 + i), data.reshape((3, 2))) for i in range(5): - np.testing.assert_array_equal(test_array_ctors(30 + i), data) - np.testing.assert_array_equal(test_array_ctors(40 + i), data) + np.testing.assert_array_equal(m.test_array_ctors(30 + i), data) + np.testing.assert_array_equal(m.test_array_ctors(40 + i), data) def test_string_array(): - from pybind11_tests import create_string_array, print_string_array - - arr = create_string_array(True) + arr = m.create_string_array(True) assert str(arr.dtype) == "[('a', 'S3'), ('b', 'S3')]" - assert print_string_array(arr) == [ + assert m.print_string_array(arr) == [ "a='',b=''", "a='a',b='a'", "a='ab',b='ab'", @@ -209,44 +204,78 @@ def test_string_array(): dtype = arr.dtype assert arr['a'].tolist() == [b'', b'a', b'ab', b'abc'] assert arr['b'].tolist() == [b'', b'a', b'ab', b'abc'] - arr = create_string_array(False) + arr = m.create_string_array(False) assert dtype == arr.dtype +def test_array_array(): + from sys import byteorder + e = '<' if byteorder == 'little' else '>' + + arr = m.create_array_array(3) + assert str(arr.dtype) == ( + "{{'names':['a','b','c','d'], " + + "'formats':[('S4', (3,)),('<i4', (2,)),('u1', (3,)),('{e}f4', (4, 2))], " + + "'offsets':[0,12,20,24], 'itemsize':56}}").format(e=e) + assert m.print_array_array(arr) == [ + "a={{A,B,C,D},{K,L,M,N},{U,V,W,X}},b={0,1}," + + "c={0,1,2},d={{0,1},{10,11},{20,21},{30,31}}", + "a={{W,X,Y,Z},{G,H,I,J},{Q,R,S,T}},b={1000,1001}," + + "c={10,11,12},d={{100,101},{110,111},{120,121},{130,131}}", + "a={{S,T,U,V},{C,D,E,F},{M,N,O,P}},b={2000,2001}," + + "c={20,21,22},d={{200,201},{210,211},{220,221},{230,231}}", + ] + assert arr['a'].tolist() == [[b'ABCD', b'KLMN', b'UVWX'], + [b'WXYZ', b'GHIJ', b'QRST'], + [b'STUV', b'CDEF', b'MNOP']] + assert arr['b'].tolist() == [[0, 1], [1000, 1001], [2000, 2001]] + assert m.create_array_array(0).dtype == arr.dtype + + def test_enum_array(): - from pybind11_tests import create_enum_array, print_enum_array from sys import byteorder e = '<' if byteorder == 'little' else '>' - arr = create_enum_array(3) + arr = m.create_enum_array(3) dtype = arr.dtype assert dtype == np.dtype([('e1', e + 'i8'), ('e2', 'u1')]) - assert print_enum_array(arr) == [ + assert m.print_enum_array(arr) == [ "e1=A,e2=X", "e1=B,e2=Y", "e1=A,e2=X" ] assert arr['e1'].tolist() == [-1, 1, -1] assert arr['e2'].tolist() == [1, 2, 1] - assert create_enum_array(0).dtype == dtype + assert m.create_enum_array(0).dtype == dtype -def test_signature(doc): - from pybind11_tests import create_rec_nested +def test_complex_array(): + from sys import byteorder + e = '<' if byteorder == 'little' else '>' + + arr = m.create_complex_array(3) + dtype = arr.dtype + assert dtype == np.dtype([('cflt', e + 'c8'), ('cdbl', e + 'c16')]) + assert m.print_complex_array(arr) == [ + "c:(0,0.25),(0.5,0.75)", + "c:(1,1.25),(1.5,1.75)", + "c:(2,2.25),(2.5,2.75)" + ] + assert arr['cflt'].tolist() == [0.0 + 0.25j, 1.0 + 1.25j, 2.0 + 2.25j] + assert arr['cdbl'].tolist() == [0.5 + 0.75j, 1.5 + 1.75j, 2.5 + 2.75j] + assert m.create_complex_array(0).dtype == dtype - assert doc(create_rec_nested) == "create_rec_nested(arg0: int) -> numpy.ndarray[NestedStruct]" +def test_signature(doc): + assert doc(m.create_rec_nested) == \ + "create_rec_nested(arg0: int) -> numpy.ndarray[NestedStruct]" -def test_scalar_conversion(): - from pybind11_tests import (create_rec_simple, f_simple, - create_rec_packed, f_packed, - create_rec_nested, f_nested, - create_enum_array) +def test_scalar_conversion(): n = 3 - arrays = [create_rec_simple(n), create_rec_packed(n), - create_rec_nested(n), create_enum_array(n)] - funcs = [f_simple, f_packed, f_nested] + arrays = [m.create_rec_simple(n), m.create_rec_packed(n), + m.create_rec_nested(n), m.create_enum_array(n)] + funcs = [m.f_simple, m.f_packed, m.f_nested] for i, func in enumerate(funcs): for j, arr in enumerate(arrays): @@ -259,14 +288,11 @@ def test_scalar_conversion(): def test_register_dtype(): - from pybind11_tests import register_dtype - with pytest.raises(RuntimeError) as excinfo: - register_dtype() + m.register_dtype() assert 'dtype is already registered' in str(excinfo.value) @pytest.requires_numpy def test_compare_buffer_info(): - from pybind11_tests import compare_buffer_info - assert all(compare_buffer_info()) + assert all(m.compare_buffer_info()) diff --git a/ext/pybind11/tests/test_numpy_vectorize.cpp b/ext/pybind11/tests/test_numpy_vectorize.cpp index 8e951c6e1..a875a74b9 100644 --- a/ext/pybind11/tests/test_numpy_vectorize.cpp +++ b/ext/pybind11/tests/test_numpy_vectorize.cpp @@ -16,11 +16,11 @@ double my_func(int x, float y, double z) { return (float) x*y*z; } -std::complex<double> my_func3(std::complex<double> c) { - return c * std::complex<double>(2.f); -} +TEST_SUBMODULE(numpy_vectorize, m) { + try { py::module::import("numpy"); } + catch (...) { return; } -test_initializer numpy_vectorize([](py::module &m) { + // test_vectorize, test_docs, test_array_collapse // Vectorize all arguments of a function (though non-vector arguments are also allowed) m.def("vectorized_func", py::vectorize(my_func)); @@ -32,14 +32,45 @@ test_initializer numpy_vectorize([](py::module &m) { ); // Vectorize a complex-valued function - m.def("vectorized_func3", py::vectorize(my_func3)); + m.def("vectorized_func3", py::vectorize( + [](std::complex<double> c) { return c * std::complex<double>(2.f); } + )); - /// Numpy function which only accepts specific data types + // test_type_selection + // Numpy function which only accepts specific data types m.def("selective_func", [](py::array_t<int, py::array::c_style>) { return "Int branch taken."; }); m.def("selective_func", [](py::array_t<float, py::array::c_style>) { return "Float branch taken."; }); m.def("selective_func", [](py::array_t<std::complex<float>, py::array::c_style>) { return "Complex float branch taken."; }); + // test_passthrough_arguments + // Passthrough test: references and non-pod types should be automatically passed through (in the + // function definition below, only `b`, `d`, and `g` are vectorized): + struct NonPODClass { + NonPODClass(int v) : value{v} {} + int value; + }; + py::class_<NonPODClass>(m, "NonPODClass").def(py::init<int>()); + m.def("vec_passthrough", py::vectorize( + [](double *a, double b, py::array_t<double> c, const int &d, int &e, NonPODClass f, const double g) { + return *a + b + c.at(0) + d + e + f.value + g; + } + )); + + // test_method_vectorization + struct VectorizeTestClass { + VectorizeTestClass(int v) : value{v} {}; + float method(int x, float y) { return y + (float) (x + value); } + int value = 0; + }; + py::class_<VectorizeTestClass> vtc(m, "VectorizeTestClass"); + vtc .def(py::init<int>()) + .def_readwrite("value", &VectorizeTestClass::value); + + // Automatic vectorizing of methods + vtc.def("method", py::vectorize(&VectorizeTestClass::method)); + + // test_trivial_broadcasting // Internal optimization test for whether the input is trivially broadcastable: py::enum_<py::detail::broadcast_trivial>(m, "trivial") .value("f_trivial", py::detail::broadcast_trivial::f_trivial) @@ -50,9 +81,9 @@ test_initializer numpy_vectorize([](py::module &m) { py::array_t<float, py::array::forcecast> arg2, py::array_t<double, py::array::forcecast> arg3 ) { - size_t ndim; - std::vector<size_t> shape; + ssize_t ndim; + std::vector<ssize_t> shape; std::array<py::buffer_info, 3> buffers {{ arg1.request(), arg2.request(), arg3.request() }}; return py::detail::broadcast(buffers, ndim, shape); }); -}); +} diff --git a/ext/pybind11/tests/test_numpy_vectorize.py b/ext/pybind11/tests/test_numpy_vectorize.py index 7ae777227..0e9c88397 100644 --- a/ext/pybind11/tests/test_numpy_vectorize.py +++ b/ext/pybind11/tests/test_numpy_vectorize.py @@ -1,4 +1,5 @@ import pytest +from pybind11_tests import numpy_vectorize as m pytestmark = pytest.requires_numpy @@ -7,11 +8,9 @@ with pytest.suppress(ImportError): def test_vectorize(capture): - from pybind11_tests import vectorized_func, vectorized_func2, vectorized_func3 + assert np.isclose(m.vectorized_func3(np.array(3 + 7j)), [6 + 14j]) - assert np.isclose(vectorized_func3(np.array(3 + 7j)), [6 + 14j]) - - for f in [vectorized_func, vectorized_func2]: + for f in [m.vectorized_func, m.vectorized_func2]: with capture: assert np.isclose(f(1, 2, 3), 6) assert capture == "my_func(x:int=1, y:float=2, z:float=3)" @@ -103,23 +102,19 @@ def test_vectorize(capture): def test_type_selection(): - from pybind11_tests import selective_func - - assert selective_func(np.array([1], dtype=np.int32)) == "Int branch taken." - assert selective_func(np.array([1.0], dtype=np.float32)) == "Float branch taken." - assert selective_func(np.array([1.0j], dtype=np.complex64)) == "Complex float branch taken." + assert m.selective_func(np.array([1], dtype=np.int32)) == "Int branch taken." + assert m.selective_func(np.array([1.0], dtype=np.float32)) == "Float branch taken." + assert m.selective_func(np.array([1.0j], dtype=np.complex64)) == "Complex float branch taken." def test_docs(doc): - from pybind11_tests import vectorized_func - - assert doc(vectorized_func) == """ + assert doc(m.vectorized_func) == """ vectorized_func(arg0: numpy.ndarray[int32], arg1: numpy.ndarray[float32], arg2: numpy.ndarray[float64]) -> object """ # noqa: E501 line too long def test_trivial_broadcasting(): - from pybind11_tests import vectorized_is_trivial, trivial, vectorized_func + trivial, vectorized_is_trivial = m.trivial, m.vectorized_is_trivial assert vectorized_is_trivial(1, 2, 3) == trivial.c_trivial assert vectorized_is_trivial(np.array(1), np.array(2), 3) == trivial.c_trivial @@ -153,9 +148,49 @@ def test_trivial_broadcasting(): assert vectorized_is_trivial(z1[1::4, 1::4], y2, 1) == trivial.f_trivial assert vectorized_is_trivial(y1[1::4, 1::4], z2, 1) == trivial.c_trivial - assert vectorized_func(z1, z2, z3).flags.c_contiguous - assert vectorized_func(y1, y2, y3).flags.f_contiguous - assert vectorized_func(z1, 1, 1).flags.c_contiguous - assert vectorized_func(1, y2, 1).flags.f_contiguous - assert vectorized_func(z1[1::4, 1::4], y2, 1).flags.f_contiguous - assert vectorized_func(y1[1::4, 1::4], z2, 1).flags.c_contiguous + assert m.vectorized_func(z1, z2, z3).flags.c_contiguous + assert m.vectorized_func(y1, y2, y3).flags.f_contiguous + assert m.vectorized_func(z1, 1, 1).flags.c_contiguous + assert m.vectorized_func(1, y2, 1).flags.f_contiguous + assert m.vectorized_func(z1[1::4, 1::4], y2, 1).flags.f_contiguous + assert m.vectorized_func(y1[1::4, 1::4], z2, 1).flags.c_contiguous + + +def test_passthrough_arguments(doc): + assert doc(m.vec_passthrough) == ( + "vec_passthrough(" + ", ".join([ + "arg0: float", + "arg1: numpy.ndarray[float64]", + "arg2: numpy.ndarray[float64]", + "arg3: numpy.ndarray[int32]", + "arg4: int", + "arg5: m.numpy_vectorize.NonPODClass", + "arg6: numpy.ndarray[float64]"]) + ") -> object") + + b = np.array([[10, 20, 30]], dtype='float64') + c = np.array([100, 200]) # NOT a vectorized argument + d = np.array([[1000], [2000], [3000]], dtype='int') + g = np.array([[1000000, 2000000, 3000000]], dtype='int') # requires casting + assert np.all( + m.vec_passthrough(1, b, c, d, 10000, m.NonPODClass(100000), g) == + np.array([[1111111, 2111121, 3111131], + [1112111, 2112121, 3112131], + [1113111, 2113121, 3113131]])) + + +def test_method_vectorization(): + o = m.VectorizeTestClass(3) + x = np.array([1, 2], dtype='int') + y = np.array([[10], [20]], dtype='float32') + assert np.all(o.method(x, y) == [[14, 15], [24, 25]]) + + +def test_array_collapse(): + assert not isinstance(m.vectorized_func(1, 2, 3), np.ndarray) + assert not isinstance(m.vectorized_func(np.array(1), 2, 3), np.ndarray) + z = m.vectorized_func([1], 2, 3) + assert isinstance(z, np.ndarray) + assert z.shape == (1, ) + z = m.vectorized_func(1, [[[2]]], 3) + assert isinstance(z, np.ndarray) + assert z.shape == (1, 1, 1) diff --git a/ext/pybind11/tests/test_opaque_types.cpp b/ext/pybind11/tests/test_opaque_types.cpp index 54f4dc7a5..5e83df0f6 100644 --- a/ext/pybind11/tests/test_opaque_types.cpp +++ b/ext/pybind11/tests/test_opaque_types.cpp @@ -11,17 +11,13 @@ #include <pybind11/stl.h> #include <vector> -typedef std::vector<std::string> StringList; - -class ClassWithSTLVecProperty { -public: - StringList stringList; -}; +using StringList = std::vector<std::string>; /* IMPORTANT: Disable internal pybind11 translation mechanisms for STL data structures */ PYBIND11_MAKE_OPAQUE(StringList); -test_initializer opaque_types([](py::module &m) { +TEST_SUBMODULE(opaque_types, m) { + // test_string_list py::class_<StringList>(m, "StringList") .def(py::init<>()) .def("pop_back", &StringList::pop_back) @@ -33,6 +29,10 @@ test_initializer opaque_types([](py::module &m) { return py::make_iterator(v.begin(), v.end()); }, py::keep_alive<0, 1>()); + class ClassWithSTLVecProperty { + public: + StringList stringList; + }; py::class_<ClassWithSTLVecProperty>(m, "ClassWithSTLVecProperty") .def(py::init<>()) .def_readwrite("stringList", &ClassWithSTLVecProperty::stringList); @@ -49,6 +49,7 @@ test_initializer opaque_types([](py::module &m) { return ret + "]"; }); + // test_pointers m.def("return_void_ptr", []() { return (void *) 0x1234; }); m.def("get_void_ptr_value", [](void *ptr) { return reinterpret_cast<std::intptr_t>(ptr); }); m.def("return_null_str", []() { return (char *) nullptr; }); @@ -59,4 +60,4 @@ test_initializer opaque_types([](py::module &m) { result->push_back("some value"); return std::unique_ptr<StringList>(result); }); -}); +} diff --git a/ext/pybind11/tests/test_opaque_types.py b/ext/pybind11/tests/test_opaque_types.py index 1cd410208..2d3aef5d1 100644 --- a/ext/pybind11/tests/test_opaque_types.py +++ b/ext/pybind11/tests/test_opaque_types.py @@ -1,40 +1,36 @@ import pytest +from pybind11_tests import opaque_types as m +from pybind11_tests import ConstructorStats, UserType def test_string_list(): - from pybind11_tests import StringList, ClassWithSTLVecProperty, print_opaque_list - - l = StringList() + l = m.StringList() l.push_back("Element 1") l.push_back("Element 2") - assert print_opaque_list(l) == "Opaque list: [Element 1, Element 2]" + assert m.print_opaque_list(l) == "Opaque list: [Element 1, Element 2]" assert l.back() == "Element 2" for i, k in enumerate(l, start=1): assert k == "Element {}".format(i) l.pop_back() - assert print_opaque_list(l) == "Opaque list: [Element 1]" + assert m.print_opaque_list(l) == "Opaque list: [Element 1]" - cvp = ClassWithSTLVecProperty() - assert print_opaque_list(cvp.stringList) == "Opaque list: []" + cvp = m.ClassWithSTLVecProperty() + assert m.print_opaque_list(cvp.stringList) == "Opaque list: []" cvp.stringList = l cvp.stringList.push_back("Element 3") - assert print_opaque_list(cvp.stringList) == "Opaque list: [Element 1, Element 3]" + assert m.print_opaque_list(cvp.stringList) == "Opaque list: [Element 1, Element 3]" def test_pointers(msg): - from pybind11_tests import (return_void_ptr, get_void_ptr_value, ExampleMandA, - print_opaque_list, return_null_str, get_null_str_value, - return_unique_ptr, ConstructorStats) - - living_before = ConstructorStats.get(ExampleMandA).alive() - assert get_void_ptr_value(return_void_ptr()) == 0x1234 - assert get_void_ptr_value(ExampleMandA()) # Should also work for other C++ types - assert ConstructorStats.get(ExampleMandA).alive() == living_before + living_before = ConstructorStats.get(UserType).alive() + assert m.get_void_ptr_value(m.return_void_ptr()) == 0x1234 + assert m.get_void_ptr_value(UserType()) # Should also work for other C++ types + assert ConstructorStats.get(UserType).alive() == living_before with pytest.raises(TypeError) as excinfo: - get_void_ptr_value([1, 2, 3]) # This should not work + m.get_void_ptr_value([1, 2, 3]) # This should not work assert msg(excinfo.value) == """ get_void_ptr_value(): incompatible function arguments. The following argument types are supported: 1. (arg0: capsule) -> int @@ -42,9 +38,9 @@ def test_pointers(msg): Invoked with: [1, 2, 3] """ # noqa: E501 line too long - assert return_null_str() is None - assert get_null_str_value(return_null_str()) is not None + assert m.return_null_str() is None + assert m.get_null_str_value(m.return_null_str()) is not None - ptr = return_unique_ptr() + ptr = m.return_unique_ptr() assert "StringList" in repr(ptr) - assert print_opaque_list(ptr) == "Opaque list: [some value]" + assert m.print_opaque_list(ptr) == "Opaque list: [some value]" diff --git a/ext/pybind11/tests/test_operator_overloading.cpp b/ext/pybind11/tests/test_operator_overloading.cpp index 93aea8010..4ad34d104 100644 --- a/ext/pybind11/tests/test_operator_overloading.cpp +++ b/ext/pybind11/tests/test_operator_overloading.cpp @@ -10,28 +10,18 @@ #include "pybind11_tests.h" #include "constructor_stats.h" #include <pybind11/operators.h> +#include <functional> class Vector2 { public: Vector2(float x, float y) : x(x), y(y) { print_created(this, toString()); } Vector2(const Vector2 &v) : x(v.x), y(v.y) { print_copy_created(this); } Vector2(Vector2 &&v) : x(v.x), y(v.y) { print_move_created(this); v.x = v.y = 0; } + Vector2 &operator=(const Vector2 &v) { x = v.x; y = v.y; print_copy_assigned(this); return *this; } + Vector2 &operator=(Vector2 &&v) { x = v.x; y = v.y; v.x = v.y = 0; print_move_assigned(this); return *this; } ~Vector2() { print_destroyed(this); } - std::string toString() const { - return "[" + std::to_string(x) + ", " + std::to_string(y) + "]"; - } - - void operator=(const Vector2 &v) { - print_copy_assigned(this); - x = v.x; - y = v.y; - } - - void operator=(Vector2 &&v) { - print_move_assigned(this); - x = v.x; y = v.y; v.x = v.y = 0; - } + std::string toString() const { return "[" + std::to_string(x) + ", " + std::to_string(y) + "]"; } Vector2 operator+(const Vector2 &v) const { return Vector2(x + v.x, y + v.y); } Vector2 operator-(const Vector2 &v) const { return Vector2(x - v.x, y - v.y); } @@ -39,10 +29,14 @@ public: Vector2 operator+(float value) const { return Vector2(x + value, y + value); } Vector2 operator*(float value) const { return Vector2(x * value, y * value); } Vector2 operator/(float value) const { return Vector2(x / value, y / value); } + Vector2 operator*(const Vector2 &v) const { return Vector2(x * v.x, y * v.y); } + Vector2 operator/(const Vector2 &v) const { return Vector2(x / v.x, y / v.y); } Vector2& operator+=(const Vector2 &v) { x += v.x; y += v.y; return *this; } Vector2& operator-=(const Vector2 &v) { x -= v.x; y -= v.y; return *this; } Vector2& operator*=(float v) { x *= v; y *= v; return *this; } Vector2& operator/=(float v) { x /= v; y /= v; return *this; } + Vector2& operator*=(const Vector2 &v) { x *= v.x; y *= v.y; return *this; } + Vector2& operator/=(const Vector2 &v) { x /= v.x; y /= v.y; return *this; } friend Vector2 operator+(float f, const Vector2 &v) { return Vector2(f + v.x, f + v.y); } friend Vector2 operator-(float f, const Vector2 &v) { return Vector2(f - v.x, f - v.y); } @@ -52,7 +46,25 @@ private: float x, y; }; -test_initializer operator_overloading([](py::module &m) { +class C1 { }; +class C2 { }; + +int operator+(const C1 &, const C1 &) { return 11; } +int operator+(const C2 &, const C2 &) { return 22; } +int operator+(const C2 &, const C1 &) { return 21; } +int operator+(const C1 &, const C2 &) { return 12; } + +namespace std { + template<> + struct hash<Vector2> { + // Not a good hash function, but easy to test + size_t operator()(const Vector2 &) { return 4; } + }; +} + +TEST_SUBMODULE(operators, m) { + + // test_operator_overloading py::class_<Vector2>(m, "Vector2") .def(py::init<float, float>()) .def(py::self + py::self) @@ -61,16 +73,74 @@ test_initializer operator_overloading([](py::module &m) { .def(py::self - float()) .def(py::self * float()) .def(py::self / float()) + .def(py::self * py::self) + .def(py::self / py::self) .def(py::self += py::self) .def(py::self -= py::self) .def(py::self *= float()) .def(py::self /= float()) + .def(py::self *= py::self) + .def(py::self /= py::self) .def(float() + py::self) .def(float() - py::self) .def(float() * py::self) .def(float() / py::self) .def("__str__", &Vector2::toString) + .def(hash(py::self)) ; m.attr("Vector") = m.attr("Vector2"); -}); + + // test_operators_notimplemented + // #393: need to return NotSupported to ensure correct arithmetic operator behavior + py::class_<C1>(m, "C1") + .def(py::init<>()) + .def(py::self + py::self); + + py::class_<C2>(m, "C2") + .def(py::init<>()) + .def(py::self + py::self) + .def("__add__", [](const C2& c2, const C1& c1) { return c2 + c1; }) + .def("__radd__", [](const C2& c2, const C1& c1) { return c1 + c2; }); + + // test_nested + // #328: first member in a class can't be used in operators + struct NestABase { int value = -2; }; + py::class_<NestABase>(m, "NestABase") + .def(py::init<>()) + .def_readwrite("value", &NestABase::value); + + struct NestA : NestABase { + int value = 3; + NestA& operator+=(int i) { value += i; return *this; } + }; + py::class_<NestA>(m, "NestA") + .def(py::init<>()) + .def(py::self += int()) + .def("as_base", [](NestA &a) -> NestABase& { + return (NestABase&) a; + }, py::return_value_policy::reference_internal); + m.def("get_NestA", [](const NestA &a) { return a.value; }); + + struct NestB { + NestA a; + int value = 4; + NestB& operator-=(int i) { value -= i; return *this; } + }; + py::class_<NestB>(m, "NestB") + .def(py::init<>()) + .def(py::self -= int()) + .def_readwrite("a", &NestB::a); + m.def("get_NestB", [](const NestB &b) { return b.value; }); + + struct NestC { + NestB b; + int value = 5; + NestC& operator*=(int i) { value *= i; return *this; } + }; + py::class_<NestC>(m, "NestC") + .def(py::init<>()) + .def(py::self *= int()) + .def_readwrite("b", &NestC::b); + m.def("get_NestC", [](const NestC &c) { return c.value; }); +} diff --git a/ext/pybind11/tests/test_operator_overloading.py b/ext/pybind11/tests/test_operator_overloading.py index 02ccb9633..0d80e5ed3 100644 --- a/ext/pybind11/tests/test_operator_overloading.py +++ b/ext/pybind11/tests/test_operator_overloading.py @@ -1,8 +1,11 @@ -def test_operator_overloading(): - from pybind11_tests import Vector2, Vector, ConstructorStats +import pytest +from pybind11_tests import operators as m +from pybind11_tests import ConstructorStats + - v1 = Vector2(1, 2) - v2 = Vector(3, -1) +def test_operator_overloading(): + v1 = m.Vector2(1, 2) + v2 = m.Vector(3, -1) assert str(v1) == "[1.000000, 2.000000]" assert str(v2) == "[3.000000, -1.000000]" @@ -16,12 +19,25 @@ def test_operator_overloading(): assert str(8 + v1) == "[9.000000, 10.000000]" assert str(8 * v1) == "[8.000000, 16.000000]" assert str(8 / v1) == "[8.000000, 4.000000]" + assert str(v1 * v2) == "[3.000000, -2.000000]" + assert str(v2 / v1) == "[3.000000, -0.500000]" - v1 += v2 + v1 += 2 * v2 + assert str(v1) == "[7.000000, 0.000000]" + v1 -= v2 + assert str(v1) == "[4.000000, 1.000000]" v1 *= 2 assert str(v1) == "[8.000000, 2.000000]" + v1 /= 16 + assert str(v1) == "[0.500000, 0.125000]" + v1 *= v2 + assert str(v1) == "[1.500000, -0.125000]" + v2 /= v1 + assert str(v2) == "[2.000000, 8.000000]" + + assert hash(v1) == 4 - cstats = ConstructorStats.get(Vector2) + cstats = ConstructorStats.get(m.Vector2) assert cstats.alive() == 2 del v1 assert cstats.alive() == 1 @@ -32,9 +48,59 @@ def test_operator_overloading(): '[-7.000000, -6.000000]', '[9.000000, 10.000000]', '[8.000000, 16.000000]', '[0.125000, 0.250000]', '[7.000000, 6.000000]', '[9.000000, 10.000000]', - '[8.000000, 16.000000]', '[8.000000, 4.000000]'] + '[8.000000, 16.000000]', '[8.000000, 4.000000]', + '[3.000000, -2.000000]', '[3.000000, -0.500000]', + '[6.000000, -2.000000]'] assert cstats.default_constructions == 0 assert cstats.copy_constructions == 0 assert cstats.move_constructions >= 10 assert cstats.copy_assignments == 0 assert cstats.move_assignments == 0 + + +def test_operators_notimplemented(): + """#393: need to return NotSupported to ensure correct arithmetic operator behavior""" + + c1, c2 = m.C1(), m.C2() + assert c1 + c1 == 11 + assert c2 + c2 == 22 + assert c2 + c1 == 21 + assert c1 + c2 == 12 + + +def test_nested(): + """#328: first member in a class can't be used in operators""" + + a = m.NestA() + b = m.NestB() + c = m.NestC() + + a += 10 + assert m.get_NestA(a) == 13 + b.a += 100 + assert m.get_NestA(b.a) == 103 + c.b.a += 1000 + assert m.get_NestA(c.b.a) == 1003 + b -= 1 + assert m.get_NestB(b) == 3 + c.b -= 3 + assert m.get_NestB(c.b) == 1 + c *= 7 + assert m.get_NestC(c) == 35 + + abase = a.as_base() + assert abase.value == -2 + a.as_base().value += 44 + assert abase.value == 42 + assert c.b.a.as_base().value == -2 + c.b.a.as_base().value += 44 + assert c.b.a.as_base().value == 42 + + del c + pytest.gc_collect() + del a # Should't delete while abase is still alive + pytest.gc_collect() + + assert abase.value == 42 + del abase, b + pytest.gc_collect() diff --git a/ext/pybind11/tests/test_pickling.cpp b/ext/pybind11/tests/test_pickling.cpp index 52b1dbc30..9dc63bda3 100644 --- a/ext/pybind11/tests/test_pickling.cpp +++ b/ext/pybind11/tests/test_pickling.cpp @@ -9,30 +9,28 @@ #include "pybind11_tests.h" -class Pickleable { -public: - Pickleable(const std::string &value) : m_value(value) { } - const std::string &value() const { return m_value; } - - void setExtra1(int extra1) { m_extra1 = extra1; } - void setExtra2(int extra2) { m_extra2 = extra2; } - int extra1() const { return m_extra1; } - int extra2() const { return m_extra2; } -private: - std::string m_value; - int m_extra1 = 0; - int m_extra2 = 0; -}; - -class PickleableWithDict { -public: - PickleableWithDict(const std::string &value) : value(value) { } - - std::string value; - int extra; -}; - -test_initializer pickling([](py::module &m) { +TEST_SUBMODULE(pickling, m) { + // test_roundtrip + class Pickleable { + public: + Pickleable(const std::string &value) : m_value(value) { } + const std::string &value() const { return m_value; } + + void setExtra1(int extra1) { m_extra1 = extra1; } + void setExtra2(int extra2) { m_extra2 = extra2; } + int extra1() const { return m_extra1; } + int extra2() const { return m_extra2; } + private: + std::string m_value; + int m_extra1 = 0; + int m_extra2 = 0; + }; + + class PickleableNew : public Pickleable { + public: + using Pickleable::Pickleable; + }; + py::class_<Pickleable>(m, "Pickleable") .def(py::init<std::string>()) .def("value", &Pickleable::value) @@ -57,7 +55,38 @@ test_initializer pickling([](py::module &m) { p.setExtra2(t[2].cast<int>()); }); + py::class_<PickleableNew, Pickleable>(m, "PickleableNew") + .def(py::init<std::string>()) + .def(py::pickle( + [](const PickleableNew &p) { + return py::make_tuple(p.value(), p.extra1(), p.extra2()); + }, + [](py::tuple t) { + if (t.size() != 3) + throw std::runtime_error("Invalid state!"); + auto p = PickleableNew(t[0].cast<std::string>()); + + p.setExtra1(t[1].cast<int>()); + p.setExtra2(t[2].cast<int>()); + return p; + } + )); + #if !defined(PYPY_VERSION) + // test_roundtrip_with_dict + class PickleableWithDict { + public: + PickleableWithDict(const std::string &value) : value(value) { } + + std::string value; + int extra; + }; + + class PickleableWithDictNew : public PickleableWithDict { + public: + using PickleableWithDict::PickleableWithDict; + }; + py::class_<PickleableWithDict>(m, "PickleableWithDict", py::dynamic_attr()) .def(py::init<std::string>()) .def_readwrite("value", &PickleableWithDict::value) @@ -79,5 +108,23 @@ test_initializer pickling([](py::module &m) { /* Assign Python state */ self.attr("__dict__") = t[2]; }); + + py::class_<PickleableWithDictNew, PickleableWithDict>(m, "PickleableWithDictNew") + .def(py::init<std::string>()) + .def(py::pickle( + [](py::object self) { + return py::make_tuple(self.attr("value"), self.attr("extra"), self.attr("__dict__")); + }, + [](const py::tuple &t) { + if (t.size() != 3) + throw std::runtime_error("Invalid state!"); + + auto cpp_state = PickleableWithDictNew(t[0].cast<std::string>()); + cpp_state.extra = t[1].cast<int>(); + + auto py_state = t[2].cast<py::dict>(); + return std::make_pair(cpp_state, py_state); + } + )); #endif -}); +} diff --git a/ext/pybind11/tests/test_pickling.py b/ext/pybind11/tests/test_pickling.py index 548c618af..707d34786 100644 --- a/ext/pybind11/tests/test_pickling.py +++ b/ext/pybind11/tests/test_pickling.py @@ -1,4 +1,5 @@ import pytest +from pybind11_tests import pickling as m try: import cPickle as pickle # Use cPickle on Python 2.7 @@ -6,10 +7,10 @@ except ImportError: import pickle -def test_roundtrip(): - from pybind11_tests import Pickleable - - p = Pickleable("test_value") +@pytest.mark.parametrize("cls_name", ["Pickleable", "PickleableNew"]) +def test_roundtrip(cls_name): + cls = getattr(m, cls_name) + p = cls("test_value") p.setExtra1(15) p.setExtra2(48) @@ -21,10 +22,10 @@ def test_roundtrip(): @pytest.unsupported_on_pypy -def test_roundtrip_with_dict(): - from pybind11_tests import PickleableWithDict - - p = PickleableWithDict("test_value") +@pytest.mark.parametrize("cls_name", ["PickleableWithDict", "PickleableWithDictNew"]) +def test_roundtrip_with_dict(cls_name): + cls = getattr(m, cls_name) + p = cls("test_value") p.extra = 15 p.dynamic = "Attribute" diff --git a/ext/pybind11/tests/test_python_types.cpp b/ext/pybind11/tests/test_python_types.cpp deleted file mode 100644 index 5696239b4..000000000 --- a/ext/pybind11/tests/test_python_types.cpp +++ /dev/null @@ -1,495 +0,0 @@ -/* - tests/test_python_types.cpp -- singleton design pattern, static functions and - variables, passing and interacting with Python types - - Copyright (c) 2016 Wenzel Jakob <wenzel.jakob@epfl.ch> - - All rights reserved. Use of this source code is governed by a - BSD-style license that can be found in the LICENSE file. -*/ - -#include "pybind11_tests.h" -#include "constructor_stats.h" -#include <pybind11/stl.h> - -#ifdef _WIN32 -# include <io.h> -# include <fcntl.h> -#endif - -#if defined(_MSC_VER) -# pragma warning(push) -# pragma warning(disable: 4127) // warning C4127: Conditional expression is constant -#endif - -class ExamplePythonTypes { -public: - static ExamplePythonTypes *new_instance() { - auto *ptr = new ExamplePythonTypes(); - print_created(ptr, "via new_instance"); - return ptr; - } - ~ExamplePythonTypes() { print_destroyed(this); } - - /* Create and return a Python dictionary */ - py::dict get_dict() { - py::dict dict; - dict[py::str("key")] = py::str("value"); - return dict; - } - - /* Create and return a Python set */ - py::set get_set() { - py::set set; - set.add(py::str("key1")); - set.add("key2"); - set.add(std::string("key3")); - return set; - } - - /* Create and return a C++ dictionary */ - std::map<std::string, std::string> get_dict_2() { - std::map<std::string, std::string> result; - result["key"] = "value"; - return result; - } - - /* Create and return a C++ set */ - std::set<std::string> get_set_2() { - std::set<std::string> result; - result.insert("key1"); - result.insert("key2"); - return result; - } - - /* Create, manipulate, and return a Python list */ - py::list get_list() { - py::list list; - list.append("value"); - py::print("Entry at position 0:", list[0]); - list[0] = py::str("overwritten"); - return list; - } - - /* C++ STL data types are automatically casted */ - std::vector<std::wstring> get_list_2() { - std::vector<std::wstring> list; - list.push_back(L"value"); - return list; - } - - /* C++ STL data types are automatically casted */ - std::array<std::string, 2> get_array() { - return std::array<std::string, 2> {{ "array entry 1" , "array entry 2"}}; - } - - std::valarray<int> get_valarray() { - return std::valarray<int>({ 1, 4, 9 }); - } - - /* Easily iterate over a dictionary using a C++11 range-based for loop */ - void print_dict(py::dict dict) { - for (auto item : dict) - py::print("key: {}, value={}"_s.format(item.first, item.second)); - } - - /* Easily iterate over a set using a C++11 range-based for loop */ - void print_set(py::set set) { - for (auto item : set) - py::print("key:", item); - } - - /* Easily iterate over a list using a C++11 range-based for loop */ - void print_list(py::list list) { - int index = 0; - for (auto item : list) - py::print("list item {}: {}"_s.format(index++, item)); - } - - /* STL data types (such as maps) are automatically casted from Python */ - void print_dict_2(const std::map<std::string, std::string> &dict) { - for (auto item : dict) - py::print("key: {}, value={}"_s.format(item.first, item.second)); - } - - /* STL data types (such as sets) are automatically casted from Python */ - void print_set_2(const std::set<std::string> &set) { - for (auto item : set) - py::print("key:", item); - } - - /* STL data types (such as vectors) are automatically casted from Python */ - void print_list_2(std::vector<std::wstring> &list) { - int index = 0; - for (auto item : list) - py::print("list item {}: {}"_s.format(index++, item)); - } - - /* pybind automatically translates between C++11 and Python tuples */ - std::pair<std::string, bool> pair_passthrough(std::pair<bool, std::string> input) { - return std::make_pair(input.second, input.first); - } - - /* pybind automatically translates between C++11 and Python tuples */ - std::tuple<int, std::string, bool> tuple_passthrough(std::tuple<bool, std::string, int> input) { - return std::make_tuple(std::get<2>(input), std::get<1>(input), std::get<0>(input)); - } - - /* STL data types (such as arrays) are automatically casted from Python */ - void print_array(std::array<std::string, 2> &array) { - int index = 0; - for (auto item : array) - py::print("array item {}: {}"_s.format(index++, item)); - } - - void print_valarray(std::valarray<int> &varray) { - int index = 0; - for (auto item : varray) - py::print("valarray item {}: {}"_s.format(index++, item)); - } - - void throw_exception() { - throw std::runtime_error("This exception was intentionally thrown."); - } - - py::bytes get_bytes_from_string() { - return (py::bytes) std::string("foo"); - } - - py::bytes get_bytes_from_str() { - return (py::bytes) py::str("bar", 3); - } - - py::str get_str_from_string() { - return (py::str) std::string("baz"); - } - - py::str get_str_from_bytes() { - return (py::str) py::bytes("boo", 3); - } - - void test_print(const py::object& obj) { - py::print(py::str(obj)); - py::print(py::repr(obj)); - } - - static int value; - static const int value2; -}; - -int ExamplePythonTypes::value = 0; -const int ExamplePythonTypes::value2 = 5; - -struct MoveOutContainer { - struct Value { int value; }; - - std::list<Value> move_list() const { return {{0}, {1}, {2}}; } -}; - - -test_initializer python_types([](py::module &m) { - /* No constructor is explicitly defined below. An exception is raised when - trying to construct it directly from Python */ - py::class_<ExamplePythonTypes>(m, "ExamplePythonTypes", "Example 2 documentation") - .def("get_dict", &ExamplePythonTypes::get_dict, "Return a Python dictionary") - .def("get_dict_2", &ExamplePythonTypes::get_dict_2, "Return a C++ dictionary") - .def("get_list", &ExamplePythonTypes::get_list, "Return a Python list") - .def("get_list_2", &ExamplePythonTypes::get_list_2, "Return a C++ list") - .def("get_set", &ExamplePythonTypes::get_set, "Return a Python set") - .def("get_set2", &ExamplePythonTypes::get_set_2, "Return a C++ set") - .def("get_array", &ExamplePythonTypes::get_array, "Return a C++ array") - .def("get_valarray", &ExamplePythonTypes::get_valarray, "Return a C++ valarray") - .def("print_dict", &ExamplePythonTypes::print_dict, "Print entries of a Python dictionary") - .def("print_dict_2", &ExamplePythonTypes::print_dict_2, "Print entries of a C++ dictionary") - .def("print_set", &ExamplePythonTypes::print_set, "Print entries of a Python set") - .def("print_set_2", &ExamplePythonTypes::print_set_2, "Print entries of a C++ set") - .def("print_list", &ExamplePythonTypes::print_list, "Print entries of a Python list") - .def("print_list_2", &ExamplePythonTypes::print_list_2, "Print entries of a C++ list") - .def("print_array", &ExamplePythonTypes::print_array, "Print entries of a C++ array") - .def("print_valarray", &ExamplePythonTypes::print_valarray, "Print entries of a C++ valarray") - .def("pair_passthrough", &ExamplePythonTypes::pair_passthrough, "Return a pair in reversed order") - .def("tuple_passthrough", &ExamplePythonTypes::tuple_passthrough, "Return a triple in reversed order") - .def("throw_exception", &ExamplePythonTypes::throw_exception, "Throw an exception") - .def("get_bytes_from_string", &ExamplePythonTypes::get_bytes_from_string, "py::bytes from std::string") - .def("get_bytes_from_str", &ExamplePythonTypes::get_bytes_from_str, "py::bytes from py::str") - .def("get_str_from_string", &ExamplePythonTypes::get_str_from_string, "py::str from std::string") - .def("get_str_from_bytes", &ExamplePythonTypes::get_str_from_bytes, "py::str from py::bytes") - .def("test_print", &ExamplePythonTypes::test_print, "test the print function") - .def_static("new_instance", &ExamplePythonTypes::new_instance, "Return an instance") - .def_readwrite_static("value", &ExamplePythonTypes::value, "Static value member") - .def_readonly_static("value2", &ExamplePythonTypes::value2, "Static value member (readonly)"); - - m.def("test_print_function", []() { - py::print("Hello, World!"); - py::print(1, 2.0, "three", true, std::string("-- multiple args")); - auto args = py::make_tuple("and", "a", "custom", "separator"); - py::print("*args", *args, "sep"_a="-"); - py::print("no new line here", "end"_a=" -- "); - py::print("next print"); - - auto py_stderr = py::module::import("sys").attr("stderr"); - py::print("this goes to stderr", "file"_a=py_stderr); - - py::print("flush", "flush"_a=true); - - py::print("{a} + {b} = {c}"_s.format("a"_a="py::print", "b"_a="str.format", "c"_a="this")); - }); - - m.def("test_str_format", []() { - auto s1 = "{} + {} = {}"_s.format(1, 2, 3); - auto s2 = "{a} + {b} = {c}"_s.format("a"_a=1, "b"_a=2, "c"_a=3); - return py::make_tuple(s1, s2); - }); - - m.def("test_dict_keyword_constructor", []() { - auto d1 = py::dict("x"_a=1, "y"_a=2); - auto d2 = py::dict("z"_a=3, **d1); - return d2; - }); - - m.def("test_accessor_api", [](py::object o) { - auto d = py::dict(); - - d["basic_attr"] = o.attr("basic_attr"); - - auto l = py::list(); - for (const auto &item : o.attr("begin_end")) { - l.append(item); - } - d["begin_end"] = l; - - d["operator[object]"] = o.attr("d")["operator[object]"_s]; - d["operator[char *]"] = o.attr("d")["operator[char *]"]; - - d["attr(object)"] = o.attr("sub").attr("attr_obj"); - d["attr(char *)"] = o.attr("sub").attr("attr_char"); - try { - o.attr("sub").attr("missing").ptr(); - } catch (const py::error_already_set &) { - d["missing_attr_ptr"] = "raised"_s; - } - try { - o.attr("missing").attr("doesn't matter"); - } catch (const py::error_already_set &) { - d["missing_attr_chain"] = "raised"_s; - } - - d["is_none"] = o.attr("basic_attr").is_none(); - - d["operator()"] = o.attr("func")(1); - d["operator*"] = o.attr("func")(*o.attr("begin_end")); - - return d; - }); - - m.def("test_tuple_accessor", [](py::tuple existing_t) { - try { - existing_t[0] = 1; - } catch (const py::error_already_set &) { - // --> Python system error - // Only new tuples (refcount == 1) are mutable - auto new_t = py::tuple(3); - for (size_t i = 0; i < new_t.size(); ++i) { - new_t[i] = i; - } - return new_t; - } - return py::tuple(); - }); - - m.def("test_accessor_assignment", []() { - auto l = py::list(1); - l[0] = 0; - - auto d = py::dict(); - d["get"] = l[0]; - auto var = l[0]; - d["deferred_get"] = var; - l[0] = 1; - d["set"] = l[0]; - var = 99; // this assignment should not overwrite l[0] - d["deferred_set"] = l[0]; - d["var"] = var; - - return d; - }); - - bool has_optional = false, has_exp_optional = false; -#ifdef PYBIND11_HAS_OPTIONAL - has_optional = true; - using opt_int = std::optional<int>; - m.def("double_or_zero", [](const opt_int& x) -> int { - return x.value_or(0) * 2; - }); - m.def("half_or_none", [](int x) -> opt_int { - return x ? opt_int(x / 2) : opt_int(); - }); - m.def("test_nullopt", [](opt_int x) { - return x.value_or(42); - }, py::arg_v("x", std::nullopt, "None")); -#endif - -#ifdef PYBIND11_HAS_EXP_OPTIONAL - has_exp_optional = true; - using exp_opt_int = std::experimental::optional<int>; - m.def("double_or_zero_exp", [](const exp_opt_int& x) -> int { - return x.value_or(0) * 2; - }); - m.def("half_or_none_exp", [](int x) -> exp_opt_int { - return x ? exp_opt_int(x / 2) : exp_opt_int(); - }); - m.def("test_nullopt_exp", [](exp_opt_int x) { - return x.value_or(42); - }, py::arg_v("x", std::experimental::nullopt, "None")); -#endif - - m.attr("has_optional") = has_optional; - m.attr("has_exp_optional") = has_exp_optional; - - m.def("test_default_constructors", []() { - return py::dict( - "str"_a=py::str(), - "bool"_a=py::bool_(), - "int"_a=py::int_(), - "float"_a=py::float_(), - "tuple"_a=py::tuple(), - "list"_a=py::list(), - "dict"_a=py::dict(), - "set"_a=py::set() - ); - }); - - m.def("test_converting_constructors", [](py::dict d) { - return py::dict( - "str"_a=py::str(d["str"]), - "bool"_a=py::bool_(d["bool"]), - "int"_a=py::int_(d["int"]), - "float"_a=py::float_(d["float"]), - "tuple"_a=py::tuple(d["tuple"]), - "list"_a=py::list(d["list"]), - "dict"_a=py::dict(d["dict"]), - "set"_a=py::set(d["set"]), - "memoryview"_a=py::memoryview(d["memoryview"]) - ); - }); - - m.def("test_cast_functions", [](py::dict d) { - // When converting between Python types, obj.cast<T>() should be the same as T(obj) - return py::dict( - "str"_a=d["str"].cast<py::str>(), - "bool"_a=d["bool"].cast<py::bool_>(), - "int"_a=d["int"].cast<py::int_>(), - "float"_a=d["float"].cast<py::float_>(), - "tuple"_a=d["tuple"].cast<py::tuple>(), - "list"_a=d["list"].cast<py::list>(), - "dict"_a=d["dict"].cast<py::dict>(), - "set"_a=d["set"].cast<py::set>(), - "memoryview"_a=d["memoryview"].cast<py::memoryview>() - ); - }); - - py::class_<MoveOutContainer::Value>(m, "MoveOutContainerValue") - .def_readonly("value", &MoveOutContainer::Value::value); - - py::class_<MoveOutContainer>(m, "MoveOutContainer") - .def(py::init<>()) - .def_property_readonly("move_list", &MoveOutContainer::move_list); - - m.def("get_implicit_casting", []() { - py::dict d; - d["char*_i1"] = "abc"; - const char *c2 = "abc"; - d["char*_i2"] = c2; - d["char*_e"] = py::cast(c2); - d["char*_p"] = py::str(c2); - - d["int_i1"] = 42; - int i = 42; - d["int_i2"] = i; - i++; - d["int_e"] = py::cast(i); - i++; - d["int_p"] = py::int_(i); - - d["str_i1"] = std::string("str"); - std::string s2("str1"); - d["str_i2"] = s2; - s2[3] = '2'; - d["str_e"] = py::cast(s2); - s2[3] = '3'; - d["str_p"] = py::str(s2); - - py::list l(2); - l[0] = 3; - l[1] = py::cast(6); - l.append(9); - l.append(py::cast(12)); - l.append(py::int_(15)); - - return py::dict( - "d"_a=d, - "l"_a=l - ); - }); - - // Some test characters in utf16 and utf32 encodings. The last one (the 𝐀) contains a null byte - char32_t a32 = 0x61 /*a*/, z32 = 0x7a /*z*/, ib32 = 0x203d /*‽*/, cake32 = 0x1f382 /*🎂*/, mathbfA32 = 0x1d400 /*𝐀*/; - char16_t b16 = 0x62 /*b*/, z16 = 0x7a, ib16 = 0x203d, cake16_1 = 0xd83c, cake16_2 = 0xdf82, mathbfA16_1 = 0xd835, mathbfA16_2 = 0xdc00; - std::wstring wstr; - wstr.push_back(0x61); // a - wstr.push_back(0x2e18); // ⸘ - if (sizeof(wchar_t) == 2) { wstr.push_back(mathbfA16_1); wstr.push_back(mathbfA16_2); } // 𝐀, utf16 - else { wstr.push_back((wchar_t) mathbfA32); } // 𝐀, utf32 - wstr.push_back(0x7a); // z - - m.def("good_utf8_string", []() { return std::string(u8"Say utf8\u203d \U0001f382 \U0001d400"); }); // Say utf8‽ 🎂 𝐀 - m.def("good_utf16_string", [=]() { return std::u16string({ b16, ib16, cake16_1, cake16_2, mathbfA16_1, mathbfA16_2, z16 }); }); // b‽🎂𝐀z - m.def("good_utf32_string", [=]() { return std::u32string({ a32, mathbfA32, cake32, ib32, z32 }); }); // a𝐀🎂‽z - m.def("good_wchar_string", [=]() { return wstr; }); // a‽𝐀z - m.def("bad_utf8_string", []() { return std::string("abc\xd0" "def"); }); - m.def("bad_utf16_string", [=]() { return std::u16string({ b16, char16_t(0xd800), z16 }); }); - // Under Python 2.7, invalid unicode UTF-32 characters don't appear to trigger UnicodeDecodeError - if (PY_MAJOR_VERSION >= 3) - m.def("bad_utf32_string", [=]() { return std::u32string({ a32, char32_t(0xd800), z32 }); }); - if (PY_MAJOR_VERSION >= 3 || sizeof(wchar_t) == 2) - m.def("bad_wchar_string", [=]() { return std::wstring({ wchar_t(0x61), wchar_t(0xd800) }); }); - m.def("u8_Z", []() -> char { return 'Z'; }); - m.def("u8_eacute", []() -> char { return '\xe9'; }); - m.def("u16_ibang", [=]() -> char16_t { return ib16; }); - m.def("u32_mathbfA", [=]() -> char32_t { return mathbfA32; }); - m.def("wchar_heart", []() -> wchar_t { return 0x2665; }); - - m.attr("wchar_size") = py::cast(sizeof(wchar_t)); - m.def("ord_char", [](char c) -> int { return static_cast<unsigned char>(c); }); - m.def("ord_char16", [](char16_t c) -> uint16_t { return c; }); - m.def("ord_char32", [](char32_t c) -> uint32_t { return c; }); - m.def("ord_wchar", [](wchar_t c) -> int { return c; }); - - m.def("return_none_string", []() -> std::string * { return nullptr; }); - m.def("return_none_char", []() -> const char * { return nullptr; }); - m.def("return_none_bool", []() -> bool * { return nullptr; }); - m.def("return_none_int", []() -> int * { return nullptr; }); - m.def("return_none_float", []() -> float * { return nullptr; }); - - m.def("return_capsule_with_destructor", - []() { - py::print("creating capsule"); - return py::capsule([]() { - py::print("destructing capsule"); - }); - } - ); - - m.def("return_capsule_with_destructor_2", - []() { - py::print("creating capsule"); - return py::capsule((void *) 1234, [](void *ptr) { - py::print("destructing capsule: {}"_s.format((size_t) ptr)); - }); - } - ); -}); - -#if defined(_MSC_VER) -# pragma warning(pop) -#endif diff --git a/ext/pybind11/tests/test_python_types.py b/ext/pybind11/tests/test_python_types.py deleted file mode 100644 index 7956c7cc6..000000000 --- a/ext/pybind11/tests/test_python_types.py +++ /dev/null @@ -1,535 +0,0 @@ -# Python < 3 needs this: coding=utf-8 -import pytest - -from pybind11_tests import ExamplePythonTypes, ConstructorStats, has_optional, has_exp_optional - - -def test_repr(): - # In Python 3.3+, repr() accesses __qualname__ - assert "pybind11_type" in repr(type(ExamplePythonTypes)) - assert "ExamplePythonTypes" in repr(ExamplePythonTypes) - - -def test_static(): - ExamplePythonTypes.value = 15 - assert ExamplePythonTypes.value == 15 - assert ExamplePythonTypes.value2 == 5 - - with pytest.raises(AttributeError) as excinfo: - ExamplePythonTypes.value2 = 15 - assert str(excinfo.value) == "can't set attribute" - - -def test_instance(capture): - with pytest.raises(TypeError) as excinfo: - ExamplePythonTypes() - assert str(excinfo.value) == "pybind11_tests.ExamplePythonTypes: No constructor defined!" - - instance = ExamplePythonTypes.new_instance() - - with capture: - dict_result = instance.get_dict() - dict_result['key2'] = 'value2' - instance.print_dict(dict_result) - assert capture.unordered == """ - key: key, value=value - key: key2, value=value2 - """ - with capture: - dict_result = instance.get_dict_2() - dict_result['key2'] = 'value2' - instance.print_dict_2(dict_result) - assert capture.unordered == """ - key: key, value=value - key: key2, value=value2 - """ - with capture: - set_result = instance.get_set() - set_result.add('key4') - instance.print_set(set_result) - assert capture.unordered == """ - key: key1 - key: key2 - key: key3 - key: key4 - """ - with capture: - set_result = instance.get_set2() - set_result.add('key3') - instance.print_set_2(set_result) - assert capture.unordered == """ - key: key1 - key: key2 - key: key3 - """ - with capture: - list_result = instance.get_list() - list_result.append('value2') - instance.print_list(list_result) - assert capture.unordered == """ - Entry at position 0: value - list item 0: overwritten - list item 1: value2 - """ - with capture: - list_result = instance.get_list_2() - list_result.append('value2') - instance.print_list_2(list_result) - assert capture.unordered == """ - list item 0: value - list item 1: value2 - """ - with capture: - list_result = instance.get_list_2() - list_result.append('value2') - instance.print_list_2(tuple(list_result)) - assert capture.unordered == """ - list item 0: value - list item 1: value2 - """ - array_result = instance.get_array() - assert array_result == ['array entry 1', 'array entry 2'] - with capture: - instance.print_array(array_result) - assert capture.unordered == """ - array item 0: array entry 1 - array item 1: array entry 2 - """ - varray_result = instance.get_valarray() - assert varray_result == [1, 4, 9] - with capture: - instance.print_valarray(varray_result) - assert capture.unordered == """ - valarray item 0: 1 - valarray item 1: 4 - valarray item 2: 9 - """ - with pytest.raises(RuntimeError) as excinfo: - instance.throw_exception() - assert str(excinfo.value) == "This exception was intentionally thrown." - - assert instance.pair_passthrough((True, "test")) == ("test", True) - assert instance.tuple_passthrough((True, "test", 5)) == (5, "test", True) - # Any sequence can be cast to a std::pair or std::tuple - assert instance.pair_passthrough([True, "test"]) == ("test", True) - assert instance.tuple_passthrough([True, "test", 5]) == (5, "test", True) - - assert instance.get_bytes_from_string().decode() == "foo" - assert instance.get_bytes_from_str().decode() == "bar" - assert instance.get_str_from_string().encode().decode() == "baz" - assert instance.get_str_from_bytes().encode().decode() == "boo" - - class A(object): - def __str__(self): - return "this is a str" - - def __repr__(self): - return "this is a repr" - - with capture: - instance.test_print(A()) - assert capture == """ - this is a str - this is a repr - """ - - cstats = ConstructorStats.get(ExamplePythonTypes) - assert cstats.alive() == 1 - del instance - assert cstats.alive() == 0 - - -# PyPy does not seem to propagate the tp_docs field at the moment -def test_class_docs(doc): - assert doc(ExamplePythonTypes) == "Example 2 documentation" - - -def test_method_docs(doc): - assert doc(ExamplePythonTypes.get_dict) == """ - get_dict(self: m.ExamplePythonTypes) -> dict - - Return a Python dictionary - """ - assert doc(ExamplePythonTypes.get_dict_2) == """ - get_dict_2(self: m.ExamplePythonTypes) -> Dict[str, str] - - Return a C++ dictionary - """ - assert doc(ExamplePythonTypes.get_list) == """ - get_list(self: m.ExamplePythonTypes) -> list - - Return a Python list - """ - assert doc(ExamplePythonTypes.get_list_2) == """ - get_list_2(self: m.ExamplePythonTypes) -> List[str] - - Return a C++ list - """ - assert doc(ExamplePythonTypes.get_dict) == """ - get_dict(self: m.ExamplePythonTypes) -> dict - - Return a Python dictionary - """ - assert doc(ExamplePythonTypes.get_set) == """ - get_set(self: m.ExamplePythonTypes) -> set - - Return a Python set - """ - assert doc(ExamplePythonTypes.get_set2) == """ - get_set2(self: m.ExamplePythonTypes) -> Set[str] - - Return a C++ set - """ - assert doc(ExamplePythonTypes.get_array) == """ - get_array(self: m.ExamplePythonTypes) -> List[str[2]] - - Return a C++ array - """ - assert doc(ExamplePythonTypes.get_valarray) == """ - get_valarray(self: m.ExamplePythonTypes) -> List[int] - - Return a C++ valarray - """ - assert doc(ExamplePythonTypes.print_dict) == """ - print_dict(self: m.ExamplePythonTypes, arg0: dict) -> None - - Print entries of a Python dictionary - """ - assert doc(ExamplePythonTypes.print_dict_2) == """ - print_dict_2(self: m.ExamplePythonTypes, arg0: Dict[str, str]) -> None - - Print entries of a C++ dictionary - """ - assert doc(ExamplePythonTypes.print_set) == """ - print_set(self: m.ExamplePythonTypes, arg0: set) -> None - - Print entries of a Python set - """ - assert doc(ExamplePythonTypes.print_set_2) == """ - print_set_2(self: m.ExamplePythonTypes, arg0: Set[str]) -> None - - Print entries of a C++ set - """ - assert doc(ExamplePythonTypes.print_list) == """ - print_list(self: m.ExamplePythonTypes, arg0: list) -> None - - Print entries of a Python list - """ - assert doc(ExamplePythonTypes.print_list_2) == """ - print_list_2(self: m.ExamplePythonTypes, arg0: List[str]) -> None - - Print entries of a C++ list - """ - assert doc(ExamplePythonTypes.print_array) == """ - print_array(self: m.ExamplePythonTypes, arg0: List[str[2]]) -> None - - Print entries of a C++ array - """ - assert doc(ExamplePythonTypes.pair_passthrough) == """ - pair_passthrough(self: m.ExamplePythonTypes, arg0: Tuple[bool, str]) -> Tuple[str, bool] - - Return a pair in reversed order - """ - assert doc(ExamplePythonTypes.tuple_passthrough) == """ - tuple_passthrough(self: m.ExamplePythonTypes, arg0: Tuple[bool, str, int]) -> Tuple[int, str, bool] - - Return a triple in reversed order - """ # noqa: E501 line too long - assert doc(ExamplePythonTypes.throw_exception) == """ - throw_exception(self: m.ExamplePythonTypes) -> None - - Throw an exception - """ - assert doc(ExamplePythonTypes.new_instance) == """ - new_instance() -> m.ExamplePythonTypes - - Return an instance - """ - - -def test_module(): - import pybind11_tests - - assert pybind11_tests.__name__ == "pybind11_tests" - assert ExamplePythonTypes.__name__ == "ExamplePythonTypes" - assert ExamplePythonTypes.__module__ == "pybind11_tests" - assert ExamplePythonTypes.get_set.__name__ == "get_set" - assert ExamplePythonTypes.get_set.__module__ == "pybind11_tests" - - -def test_print(capture): - from pybind11_tests import test_print_function - - with capture: - test_print_function() - assert capture == """ - Hello, World! - 1 2.0 three True -- multiple args - *args-and-a-custom-separator - no new line here -- next print - flush - py::print + str.format = this - """ - assert capture.stderr == "this goes to stderr" - - -def test_str_api(): - from pybind11_tests import test_str_format - - s1, s2 = test_str_format() - assert s1 == "1 + 2 = 3" - assert s1 == s2 - - -def test_dict_api(): - from pybind11_tests import test_dict_keyword_constructor - - assert test_dict_keyword_constructor() == {"x": 1, "y": 2, "z": 3} - - -def test_accessors(): - from pybind11_tests import test_accessor_api, test_tuple_accessor, test_accessor_assignment - - class SubTestObject: - attr_obj = 1 - attr_char = 2 - - class TestObject: - basic_attr = 1 - begin_end = [1, 2, 3] - d = {"operator[object]": 1, "operator[char *]": 2} - sub = SubTestObject() - - def func(self, x, *args): - return self.basic_attr + x + sum(args) - - d = test_accessor_api(TestObject()) - assert d["basic_attr"] == 1 - assert d["begin_end"] == [1, 2, 3] - assert d["operator[object]"] == 1 - assert d["operator[char *]"] == 2 - assert d["attr(object)"] == 1 - assert d["attr(char *)"] == 2 - assert d["missing_attr_ptr"] == "raised" - assert d["missing_attr_chain"] == "raised" - assert d["is_none"] is False - assert d["operator()"] == 2 - assert d["operator*"] == 7 - - assert test_tuple_accessor(tuple()) == (0, 1, 2) - - d = test_accessor_assignment() - assert d["get"] == 0 - assert d["deferred_get"] == 0 - assert d["set"] == 1 - assert d["deferred_set"] == 1 - assert d["var"] == 99 - - -@pytest.mark.skipif(not has_optional, reason='no <optional>') -def test_optional(): - from pybind11_tests import double_or_zero, half_or_none, test_nullopt - - assert double_or_zero(None) == 0 - assert double_or_zero(42) == 84 - pytest.raises(TypeError, double_or_zero, 'foo') - - assert half_or_none(0) is None - assert half_or_none(42) == 21 - pytest.raises(TypeError, half_or_none, 'foo') - - assert test_nullopt() == 42 - assert test_nullopt(None) == 42 - assert test_nullopt(42) == 42 - assert test_nullopt(43) == 43 - - -@pytest.mark.skipif(not has_exp_optional, reason='no <experimental/optional>') -def test_exp_optional(): - from pybind11_tests import double_or_zero_exp, half_or_none_exp, test_nullopt_exp - - assert double_or_zero_exp(None) == 0 - assert double_or_zero_exp(42) == 84 - pytest.raises(TypeError, double_or_zero_exp, 'foo') - - assert half_or_none_exp(0) is None - assert half_or_none_exp(42) == 21 - pytest.raises(TypeError, half_or_none_exp, 'foo') - - assert test_nullopt_exp() == 42 - assert test_nullopt_exp(None) == 42 - assert test_nullopt_exp(42) == 42 - assert test_nullopt_exp(43) == 43 - - -def test_constructors(): - """C++ default and converting constructors are equivalent to type calls in Python""" - from pybind11_tests import (test_default_constructors, test_converting_constructors, - test_cast_functions) - - types = [str, bool, int, float, tuple, list, dict, set] - expected = {t.__name__: t() for t in types} - assert test_default_constructors() == expected - - data = { - str: 42, - bool: "Not empty", - int: "42", - float: "+1e3", - tuple: range(3), - list: range(3), - dict: [("two", 2), ("one", 1), ("three", 3)], - set: [4, 4, 5, 6, 6, 6], - memoryview: b'abc' - } - inputs = {k.__name__: v for k, v in data.items()} - expected = {k.__name__: k(v) for k, v in data.items()} - assert test_converting_constructors(inputs) == expected - assert test_cast_functions(inputs) == expected - - -def test_move_out_container(): - """Properties use the `reference_internal` policy by default. If the underlying function - returns an rvalue, the policy is automatically changed to `move` to avoid referencing - a temporary. In case the return value is a container of user-defined types, the policy - also needs to be applied to the elements, not just the container.""" - from pybind11_tests import MoveOutContainer - - c = MoveOutContainer() - moved_out_list = c.move_list - assert [x.value for x in moved_out_list] == [0, 1, 2] - - -def test_implicit_casting(): - """Tests implicit casting when assigning or appending to dicts and lists.""" - from pybind11_tests import get_implicit_casting - - z = get_implicit_casting() - assert z['d'] == { - 'char*_i1': 'abc', 'char*_i2': 'abc', 'char*_e': 'abc', 'char*_p': 'abc', - 'str_i1': 'str', 'str_i2': 'str1', 'str_e': 'str2', 'str_p': 'str3', - 'int_i1': 42, 'int_i2': 42, 'int_e': 43, 'int_p': 44 - } - assert z['l'] == [3, 6, 9, 12, 15] - - -def test_unicode_conversion(): - """Tests unicode conversion and error reporting.""" - import pybind11_tests - from pybind11_tests import (good_utf8_string, bad_utf8_string, - good_utf16_string, bad_utf16_string, - good_utf32_string, # bad_utf32_string, - good_wchar_string, # bad_wchar_string, - u8_Z, u8_eacute, u16_ibang, u32_mathbfA, wchar_heart) - - assert good_utf8_string() == u"Say utf8‽ 🎂 𝐀" - assert good_utf16_string() == u"b‽🎂𝐀z" - assert good_utf32_string() == u"a𝐀🎂‽z" - assert good_wchar_string() == u"a⸘𝐀z" - - with pytest.raises(UnicodeDecodeError): - bad_utf8_string() - - with pytest.raises(UnicodeDecodeError): - bad_utf16_string() - - # These are provided only if they actually fail (they don't when 32-bit and under Python 2.7) - if hasattr(pybind11_tests, "bad_utf32_string"): - with pytest.raises(UnicodeDecodeError): - pybind11_tests.bad_utf32_string() - if hasattr(pybind11_tests, "bad_wchar_string"): - with pytest.raises(UnicodeDecodeError): - pybind11_tests.bad_wchar_string() - - assert u8_Z() == 'Z' - assert u8_eacute() == u'é' - assert u16_ibang() == u'‽' - assert u32_mathbfA() == u'𝐀' - assert wchar_heart() == u'♥' - - -def test_single_char_arguments(): - """Tests failures for passing invalid inputs to char-accepting functions""" - from pybind11_tests import ord_char, ord_char16, ord_char32, ord_wchar, wchar_size - - def toobig_message(r): - return "Character code point not in range({0:#x})".format(r) - toolong_message = "Expected a character, but multi-character string found" - - assert ord_char(u'a') == 0x61 # simple ASCII - assert ord_char(u'é') == 0xE9 # requires 2 bytes in utf-8, but can be stuffed in a char - with pytest.raises(ValueError) as excinfo: - assert ord_char(u'Ā') == 0x100 # requires 2 bytes, doesn't fit in a char - assert str(excinfo.value) == toobig_message(0x100) - with pytest.raises(ValueError) as excinfo: - assert ord_char(u'ab') - assert str(excinfo.value) == toolong_message - - assert ord_char16(u'a') == 0x61 - assert ord_char16(u'é') == 0xE9 - assert ord_char16(u'Ā') == 0x100 - assert ord_char16(u'‽') == 0x203d - assert ord_char16(u'♥') == 0x2665 - with pytest.raises(ValueError) as excinfo: - assert ord_char16(u'🎂') == 0x1F382 # requires surrogate pair - assert str(excinfo.value) == toobig_message(0x10000) - with pytest.raises(ValueError) as excinfo: - assert ord_char16(u'aa') - assert str(excinfo.value) == toolong_message - - assert ord_char32(u'a') == 0x61 - assert ord_char32(u'é') == 0xE9 - assert ord_char32(u'Ā') == 0x100 - assert ord_char32(u'‽') == 0x203d - assert ord_char32(u'♥') == 0x2665 - assert ord_char32(u'🎂') == 0x1F382 - with pytest.raises(ValueError) as excinfo: - assert ord_char32(u'aa') - assert str(excinfo.value) == toolong_message - - assert ord_wchar(u'a') == 0x61 - assert ord_wchar(u'é') == 0xE9 - assert ord_wchar(u'Ā') == 0x100 - assert ord_wchar(u'‽') == 0x203d - assert ord_wchar(u'♥') == 0x2665 - if wchar_size == 2: - with pytest.raises(ValueError) as excinfo: - assert ord_wchar(u'🎂') == 0x1F382 # requires surrogate pair - assert str(excinfo.value) == toobig_message(0x10000) - else: - assert ord_wchar(u'🎂') == 0x1F382 - with pytest.raises(ValueError) as excinfo: - assert ord_wchar(u'aa') - assert str(excinfo.value) == toolong_message - - -def test_builtins_cast_return_none(): - """Casters produced with PYBIND11_TYPE_CASTER() should convert nullptr to None""" - import pybind11_tests as m - - assert m.return_none_string() is None - assert m.return_none_char() is None - assert m.return_none_bool() is None - assert m.return_none_int() is None - assert m.return_none_float() is None - - -def test_capsule_with_destructor(capture): - import pybind11_tests as m - with capture: - a = m.return_capsule_with_destructor() - del a - pytest.gc_collect() - assert capture.unordered == """ - creating capsule - destructing capsule - """ - - with capture: - a = m.return_capsule_with_destructor_2() - del a - pytest.gc_collect() - assert capture.unordered == """ - creating capsule - destructing capsule: 1234 - """ diff --git a/ext/pybind11/tests/test_pytypes.cpp b/ext/pybind11/tests/test_pytypes.cpp new file mode 100644 index 000000000..a962f0ccc --- /dev/null +++ b/ext/pybind11/tests/test_pytypes.cpp @@ -0,0 +1,272 @@ +/* + tests/test_pytypes.cpp -- Python type casters + + Copyright (c) 2017 Wenzel Jakob <wenzel.jakob@epfl.ch> + + All rights reserved. Use of this source code is governed by a + BSD-style license that can be found in the LICENSE file. +*/ + +#include "pybind11_tests.h" + + +TEST_SUBMODULE(pytypes, m) { + // test_list + m.def("get_list", []() { + py::list list; + list.append("value"); + py::print("Entry at position 0:", list[0]); + list[0] = py::str("overwritten"); + return list; + }); + m.def("print_list", [](py::list list) { + int index = 0; + for (auto item : list) + py::print("list item {}: {}"_s.format(index++, item)); + }); + + // test_set + m.def("get_set", []() { + py::set set; + set.add(py::str("key1")); + set.add("key2"); + set.add(std::string("key3")); + return set; + }); + m.def("print_set", [](py::set set) { + for (auto item : set) + py::print("key:", item); + }); + + // test_dict + m.def("get_dict", []() { return py::dict("key"_a="value"); }); + m.def("print_dict", [](py::dict dict) { + for (auto item : dict) + py::print("key: {}, value={}"_s.format(item.first, item.second)); + }); + m.def("dict_keyword_constructor", []() { + auto d1 = py::dict("x"_a=1, "y"_a=2); + auto d2 = py::dict("z"_a=3, **d1); + return d2; + }); + + // test_str + m.def("str_from_string", []() { return py::str(std::string("baz")); }); + m.def("str_from_bytes", []() { return py::str(py::bytes("boo", 3)); }); + m.def("str_from_object", [](const py::object& obj) { return py::str(obj); }); + m.def("repr_from_object", [](const py::object& obj) { return py::repr(obj); }); + + m.def("str_format", []() { + auto s1 = "{} + {} = {}"_s.format(1, 2, 3); + auto s2 = "{a} + {b} = {c}"_s.format("a"_a=1, "b"_a=2, "c"_a=3); + return py::make_tuple(s1, s2); + }); + + // test_bytes + m.def("bytes_from_string", []() { return py::bytes(std::string("foo")); }); + m.def("bytes_from_str", []() { return py::bytes(py::str("bar", 3)); }); + + // test_capsule + m.def("return_capsule_with_destructor", []() { + py::print("creating capsule"); + return py::capsule([]() { + py::print("destructing capsule"); + }); + }); + + m.def("return_capsule_with_destructor_2", []() { + py::print("creating capsule"); + return py::capsule((void *) 1234, [](void *ptr) { + py::print("destructing capsule: {}"_s.format((size_t) ptr)); + }); + }); + + m.def("return_capsule_with_name_and_destructor", []() { + auto capsule = py::capsule((void *) 1234, "pointer type description", [](PyObject *ptr) { + if (ptr) { + auto name = PyCapsule_GetName(ptr); + py::print("destructing capsule ({}, '{}')"_s.format( + (size_t) PyCapsule_GetPointer(ptr, name), name + )); + } + }); + void *contents = capsule; + py::print("created capsule ({}, '{}')"_s.format((size_t) contents, capsule.name())); + return capsule; + }); + + // test_accessors + m.def("accessor_api", [](py::object o) { + auto d = py::dict(); + + d["basic_attr"] = o.attr("basic_attr"); + + auto l = py::list(); + for (const auto &item : o.attr("begin_end")) { + l.append(item); + } + d["begin_end"] = l; + + d["operator[object]"] = o.attr("d")["operator[object]"_s]; + d["operator[char *]"] = o.attr("d")["operator[char *]"]; + + d["attr(object)"] = o.attr("sub").attr("attr_obj"); + d["attr(char *)"] = o.attr("sub").attr("attr_char"); + try { + o.attr("sub").attr("missing").ptr(); + } catch (const py::error_already_set &) { + d["missing_attr_ptr"] = "raised"_s; + } + try { + o.attr("missing").attr("doesn't matter"); + } catch (const py::error_already_set &) { + d["missing_attr_chain"] = "raised"_s; + } + + d["is_none"] = o.attr("basic_attr").is_none(); + + d["operator()"] = o.attr("func")(1); + d["operator*"] = o.attr("func")(*o.attr("begin_end")); + + // Test implicit conversion + py::list implicit_list = o.attr("begin_end"); + d["implicit_list"] = implicit_list; + py::dict implicit_dict = o.attr("__dict__"); + d["implicit_dict"] = implicit_dict; + + return d; + }); + + m.def("tuple_accessor", [](py::tuple existing_t) { + try { + existing_t[0] = 1; + } catch (const py::error_already_set &) { + // --> Python system error + // Only new tuples (refcount == 1) are mutable + auto new_t = py::tuple(3); + for (size_t i = 0; i < new_t.size(); ++i) { + new_t[i] = i; + } + return new_t; + } + return py::tuple(); + }); + + m.def("accessor_assignment", []() { + auto l = py::list(1); + l[0] = 0; + + auto d = py::dict(); + d["get"] = l[0]; + auto var = l[0]; + d["deferred_get"] = var; + l[0] = 1; + d["set"] = l[0]; + var = 99; // this assignment should not overwrite l[0] + d["deferred_set"] = l[0]; + d["var"] = var; + + return d; + }); + + // test_constructors + m.def("default_constructors", []() { + return py::dict( + "str"_a=py::str(), + "bool"_a=py::bool_(), + "int"_a=py::int_(), + "float"_a=py::float_(), + "tuple"_a=py::tuple(), + "list"_a=py::list(), + "dict"_a=py::dict(), + "set"_a=py::set() + ); + }); + + m.def("converting_constructors", [](py::dict d) { + return py::dict( + "str"_a=py::str(d["str"]), + "bool"_a=py::bool_(d["bool"]), + "int"_a=py::int_(d["int"]), + "float"_a=py::float_(d["float"]), + "tuple"_a=py::tuple(d["tuple"]), + "list"_a=py::list(d["list"]), + "dict"_a=py::dict(d["dict"]), + "set"_a=py::set(d["set"]), + "memoryview"_a=py::memoryview(d["memoryview"]) + ); + }); + + m.def("cast_functions", [](py::dict d) { + // When converting between Python types, obj.cast<T>() should be the same as T(obj) + return py::dict( + "str"_a=d["str"].cast<py::str>(), + "bool"_a=d["bool"].cast<py::bool_>(), + "int"_a=d["int"].cast<py::int_>(), + "float"_a=d["float"].cast<py::float_>(), + "tuple"_a=d["tuple"].cast<py::tuple>(), + "list"_a=d["list"].cast<py::list>(), + "dict"_a=d["dict"].cast<py::dict>(), + "set"_a=d["set"].cast<py::set>(), + "memoryview"_a=d["memoryview"].cast<py::memoryview>() + ); + }); + + m.def("get_implicit_casting", []() { + py::dict d; + d["char*_i1"] = "abc"; + const char *c2 = "abc"; + d["char*_i2"] = c2; + d["char*_e"] = py::cast(c2); + d["char*_p"] = py::str(c2); + + d["int_i1"] = 42; + int i = 42; + d["int_i2"] = i; + i++; + d["int_e"] = py::cast(i); + i++; + d["int_p"] = py::int_(i); + + d["str_i1"] = std::string("str"); + std::string s2("str1"); + d["str_i2"] = s2; + s2[3] = '2'; + d["str_e"] = py::cast(s2); + s2[3] = '3'; + d["str_p"] = py::str(s2); + + py::list l(2); + l[0] = 3; + l[1] = py::cast(6); + l.append(9); + l.append(py::cast(12)); + l.append(py::int_(15)); + + return py::dict( + "d"_a=d, + "l"_a=l + ); + }); + + // test_print + m.def("print_function", []() { + py::print("Hello, World!"); + py::print(1, 2.0, "three", true, std::string("-- multiple args")); + auto args = py::make_tuple("and", "a", "custom", "separator"); + py::print("*args", *args, "sep"_a="-"); + py::print("no new line here", "end"_a=" -- "); + py::print("next print"); + + auto py_stderr = py::module::import("sys").attr("stderr"); + py::print("this goes to stderr", "file"_a=py_stderr); + + py::print("flush", "flush"_a=true); + + py::print("{a} + {b} = {c}"_s.format("a"_a="py::print", "b"_a="str.format", "c"_a="this")); + }); + + m.def("print_failure", []() { py::print(42, UnregisteredType()); }); + + m.def("hash_function", [](py::object obj) { return py::hash(obj); }); +} diff --git a/ext/pybind11/tests/test_pytypes.py b/ext/pybind11/tests/test_pytypes.py new file mode 100644 index 000000000..94c90a909 --- /dev/null +++ b/ext/pybind11/tests/test_pytypes.py @@ -0,0 +1,240 @@ +import pytest +import sys + +from pybind11_tests import pytypes as m +from pybind11_tests import debug_enabled + + +def test_list(capture, doc): + with capture: + l = m.get_list() + assert l == ["overwritten"] + + l.append("value2") + m.print_list(l) + assert capture.unordered == """ + Entry at position 0: value + list item 0: overwritten + list item 1: value2 + """ + + assert doc(m.get_list) == "get_list() -> list" + assert doc(m.print_list) == "print_list(arg0: list) -> None" + + +def test_set(capture, doc): + s = m.get_set() + assert s == {"key1", "key2", "key3"} + + with capture: + s.add("key4") + m.print_set(s) + assert capture.unordered == """ + key: key1 + key: key2 + key: key3 + key: key4 + """ + + assert doc(m.get_list) == "get_list() -> list" + assert doc(m.print_list) == "print_list(arg0: list) -> None" + + +def test_dict(capture, doc): + d = m.get_dict() + assert d == {"key": "value"} + + with capture: + d["key2"] = "value2" + m.print_dict(d) + assert capture.unordered == """ + key: key, value=value + key: key2, value=value2 + """ + + assert doc(m.get_dict) == "get_dict() -> dict" + assert doc(m.print_dict) == "print_dict(arg0: dict) -> None" + + assert m.dict_keyword_constructor() == {"x": 1, "y": 2, "z": 3} + + +def test_str(doc): + assert m.str_from_string().encode().decode() == "baz" + assert m.str_from_bytes().encode().decode() == "boo" + + assert doc(m.str_from_bytes) == "str_from_bytes() -> str" + + class A(object): + def __str__(self): + return "this is a str" + + def __repr__(self): + return "this is a repr" + + assert m.str_from_object(A()) == "this is a str" + assert m.repr_from_object(A()) == "this is a repr" + + s1, s2 = m.str_format() + assert s1 == "1 + 2 = 3" + assert s1 == s2 + + +def test_bytes(doc): + assert m.bytes_from_string().decode() == "foo" + assert m.bytes_from_str().decode() == "bar" + + assert doc(m.bytes_from_str) == "bytes_from_str() -> {}".format( + "bytes" if sys.version_info[0] == 3 else "str" + ) + + +def test_capsule(capture): + pytest.gc_collect() + with capture: + a = m.return_capsule_with_destructor() + del a + pytest.gc_collect() + assert capture.unordered == """ + creating capsule + destructing capsule + """ + + with capture: + a = m.return_capsule_with_destructor_2() + del a + pytest.gc_collect() + assert capture.unordered == """ + creating capsule + destructing capsule: 1234 + """ + + with capture: + a = m.return_capsule_with_name_and_destructor() + del a + pytest.gc_collect() + assert capture.unordered == """ + created capsule (1234, 'pointer type description') + destructing capsule (1234, 'pointer type description') + """ + + +def test_accessors(): + class SubTestObject: + attr_obj = 1 + attr_char = 2 + + class TestObject: + basic_attr = 1 + begin_end = [1, 2, 3] + d = {"operator[object]": 1, "operator[char *]": 2} + sub = SubTestObject() + + def func(self, x, *args): + return self.basic_attr + x + sum(args) + + d = m.accessor_api(TestObject()) + assert d["basic_attr"] == 1 + assert d["begin_end"] == [1, 2, 3] + assert d["operator[object]"] == 1 + assert d["operator[char *]"] == 2 + assert d["attr(object)"] == 1 + assert d["attr(char *)"] == 2 + assert d["missing_attr_ptr"] == "raised" + assert d["missing_attr_chain"] == "raised" + assert d["is_none"] is False + assert d["operator()"] == 2 + assert d["operator*"] == 7 + assert d["implicit_list"] == [1, 2, 3] + assert all(x in TestObject.__dict__ for x in d["implicit_dict"]) + + assert m.tuple_accessor(tuple()) == (0, 1, 2) + + d = m.accessor_assignment() + assert d["get"] == 0 + assert d["deferred_get"] == 0 + assert d["set"] == 1 + assert d["deferred_set"] == 1 + assert d["var"] == 99 + + +def test_constructors(): + """C++ default and converting constructors are equivalent to type calls in Python""" + types = [str, bool, int, float, tuple, list, dict, set] + expected = {t.__name__: t() for t in types} + assert m.default_constructors() == expected + + data = { + str: 42, + bool: "Not empty", + int: "42", + float: "+1e3", + tuple: range(3), + list: range(3), + dict: [("two", 2), ("one", 1), ("three", 3)], + set: [4, 4, 5, 6, 6, 6], + memoryview: b'abc' + } + inputs = {k.__name__: v for k, v in data.items()} + expected = {k.__name__: k(v) for k, v in data.items()} + + assert m.converting_constructors(inputs) == expected + assert m.cast_functions(inputs) == expected + + # Converting constructors and cast functions should just reference rather + # than copy when no conversion is needed: + noconv1 = m.converting_constructors(expected) + for k in noconv1: + assert noconv1[k] is expected[k] + + noconv2 = m.cast_functions(expected) + for k in noconv2: + assert noconv2[k] is expected[k] + + +def test_implicit_casting(): + """Tests implicit casting when assigning or appending to dicts and lists.""" + z = m.get_implicit_casting() + assert z['d'] == { + 'char*_i1': 'abc', 'char*_i2': 'abc', 'char*_e': 'abc', 'char*_p': 'abc', + 'str_i1': 'str', 'str_i2': 'str1', 'str_e': 'str2', 'str_p': 'str3', + 'int_i1': 42, 'int_i2': 42, 'int_e': 43, 'int_p': 44 + } + assert z['l'] == [3, 6, 9, 12, 15] + + +def test_print(capture): + with capture: + m.print_function() + assert capture == """ + Hello, World! + 1 2.0 three True -- multiple args + *args-and-a-custom-separator + no new line here -- next print + flush + py::print + str.format = this + """ + assert capture.stderr == "this goes to stderr" + + with pytest.raises(RuntimeError) as excinfo: + m.print_failure() + assert str(excinfo.value) == "make_tuple(): unable to convert " + ( + "argument of type 'UnregisteredType' to Python object" + if debug_enabled else + "arguments to Python object (compile in debug mode for details)" + ) + + +def test_hash(): + class Hashable(object): + def __init__(self, value): + self.value = value + + def __hash__(self): + return self.value + + class Unhashable(object): + __hash__ = None + + assert m.hash_function(Hashable(42)) == 42 + with pytest.raises(TypeError): + m.hash_function(Unhashable()) diff --git a/ext/pybind11/tests/test_sequences_and_iterators.cpp b/ext/pybind11/tests/test_sequences_and_iterators.cpp index c2051fadb..a45521256 100644 --- a/ext/pybind11/tests/test_sequences_and_iterators.cpp +++ b/ext/pybind11/tests/test_sequences_and_iterators.cpp @@ -13,146 +13,6 @@ #include <pybind11/operators.h> #include <pybind11/stl.h> -class Sequence { -public: - Sequence(size_t size) : m_size(size) { - print_created(this, "of size", m_size); - m_data = new float[size]; - memset(m_data, 0, sizeof(float) * size); - } - - Sequence(const std::vector<float> &value) : m_size(value.size()) { - print_created(this, "of size", m_size, "from std::vector"); - m_data = new float[m_size]; - memcpy(m_data, &value[0], sizeof(float) * m_size); - } - - Sequence(const Sequence &s) : m_size(s.m_size) { - print_copy_created(this); - m_data = new float[m_size]; - memcpy(m_data, s.m_data, sizeof(float)*m_size); - } - - Sequence(Sequence &&s) : m_size(s.m_size), m_data(s.m_data) { - print_move_created(this); - s.m_size = 0; - s.m_data = nullptr; - } - - ~Sequence() { - print_destroyed(this); - delete[] m_data; - } - - Sequence &operator=(const Sequence &s) { - if (&s != this) { - delete[] m_data; - m_size = s.m_size; - m_data = new float[m_size]; - memcpy(m_data, s.m_data, sizeof(float)*m_size); - } - - print_copy_assigned(this); - - return *this; - } - - Sequence &operator=(Sequence &&s) { - if (&s != this) { - delete[] m_data; - m_size = s.m_size; - m_data = s.m_data; - s.m_size = 0; - s.m_data = nullptr; - } - - print_move_assigned(this); - - return *this; - } - - bool operator==(const Sequence &s) const { - if (m_size != s.size()) - return false; - for (size_t i=0; i<m_size; ++i) - if (m_data[i] != s[i]) - return false; - return true; - } - - bool operator!=(const Sequence &s) const { - return !operator==(s); - } - - float operator[](size_t index) const { - return m_data[index]; - } - - float &operator[](size_t index) { - return m_data[index]; - } - - bool contains(float v) const { - for (size_t i=0; i<m_size; ++i) - if (v == m_data[i]) - return true; - return false; - } - - Sequence reversed() const { - Sequence result(m_size); - for (size_t i=0; i<m_size; ++i) - result[m_size-i-1] = m_data[i]; - return result; - } - - size_t size() const { return m_size; } - - const float *begin() const { return m_data; } - const float *end() const { return m_data+m_size; } - -private: - size_t m_size; - float *m_data; -}; - -class IntPairs { -public: - IntPairs(std::vector<std::pair<int, int>> data) : data_(std::move(data)) {} - const std::pair<int, int>* begin() const { return data_.data(); } - -private: - std::vector<std::pair<int, int>> data_; -}; - -// Interface of a map-like object that isn't (directly) an unordered_map, but provides some basic -// map-like functionality. -class StringMap { -public: - StringMap() = default; - StringMap(std::unordered_map<std::string, std::string> init) - : map(std::move(init)) {} - - void set(std::string key, std::string val) { - map[key] = val; - } - - std::string get(std::string key) const { - return map.at(key); - } - - size_t size() const { - return map.size(); - } - -private: - std::unordered_map<std::string, std::string> map; - -public: - decltype(map.cbegin()) begin() const { return map.cbegin(); } - decltype(map.cend()) end() const { return map.cend(); } -}; - template<typename T> class NonZeroIterator { const T* ptr_; @@ -210,66 +70,164 @@ py::list test_random_access_iterator(PythonType x) { return checks; } -test_initializer sequences_and_iterators([](py::module &pm) { - auto m = pm.def_submodule("sequences_and_iterators"); +TEST_SUBMODULE(sequences_and_iterators, m) { + + // test_sequence + class Sequence { + public: + Sequence(size_t size) : m_size(size) { + print_created(this, "of size", m_size); + m_data = new float[size]; + memset(m_data, 0, sizeof(float) * size); + } + Sequence(const std::vector<float> &value) : m_size(value.size()) { + print_created(this, "of size", m_size, "from std::vector"); + m_data = new float[m_size]; + memcpy(m_data, &value[0], sizeof(float) * m_size); + } + Sequence(const Sequence &s) : m_size(s.m_size) { + print_copy_created(this); + m_data = new float[m_size]; + memcpy(m_data, s.m_data, sizeof(float)*m_size); + } + Sequence(Sequence &&s) : m_size(s.m_size), m_data(s.m_data) { + print_move_created(this); + s.m_size = 0; + s.m_data = nullptr; + } + + ~Sequence() { print_destroyed(this); delete[] m_data; } - py::class_<Sequence> seq(m, "Sequence"); + Sequence &operator=(const Sequence &s) { + if (&s != this) { + delete[] m_data; + m_size = s.m_size; + m_data = new float[m_size]; + memcpy(m_data, s.m_data, sizeof(float)*m_size); + } + print_copy_assigned(this); + return *this; + } - seq.def(py::init<size_t>()) - .def(py::init<const std::vector<float>&>()) - /// Bare bones interface - .def("__getitem__", [](const Sequence &s, size_t i) { - if (i >= s.size()) - throw py::index_error(); + Sequence &operator=(Sequence &&s) { + if (&s != this) { + delete[] m_data; + m_size = s.m_size; + m_data = s.m_data; + s.m_size = 0; + s.m_data = nullptr; + } + print_move_assigned(this); + return *this; + } + + bool operator==(const Sequence &s) const { + if (m_size != s.size()) return false; + for (size_t i = 0; i < m_size; ++i) + if (m_data[i] != s[i]) + return false; + return true; + } + bool operator!=(const Sequence &s) const { return !operator==(s); } + + float operator[](size_t index) const { return m_data[index]; } + float &operator[](size_t index) { return m_data[index]; } + + bool contains(float v) const { + for (size_t i = 0; i < m_size; ++i) + if (v == m_data[i]) + return true; + return false; + } + + Sequence reversed() const { + Sequence result(m_size); + for (size_t i = 0; i < m_size; ++i) + result[m_size - i - 1] = m_data[i]; + return result; + } + + size_t size() const { return m_size; } + + const float *begin() const { return m_data; } + const float *end() const { return m_data+m_size; } + + private: + size_t m_size; + float *m_data; + }; + py::class_<Sequence>(m, "Sequence") + .def(py::init<size_t>()) + .def(py::init<const std::vector<float>&>()) + /// Bare bones interface + .def("__getitem__", [](const Sequence &s, size_t i) { + if (i >= s.size()) throw py::index_error(); return s[i]; }) - .def("__setitem__", [](Sequence &s, size_t i, float v) { - if (i >= s.size()) - throw py::index_error(); + .def("__setitem__", [](Sequence &s, size_t i, float v) { + if (i >= s.size()) throw py::index_error(); s[i] = v; }) - .def("__len__", &Sequence::size) - /// Optional sequence protocol operations - .def("__iter__", [](const Sequence &s) { return py::make_iterator(s.begin(), s.end()); }, - py::keep_alive<0, 1>() /* Essential: keep object alive while iterator exists */) - .def("__contains__", [](const Sequence &s, float v) { return s.contains(v); }) - .def("__reversed__", [](const Sequence &s) -> Sequence { return s.reversed(); }) - /// Slicing protocol (optional) - .def("__getitem__", [](const Sequence &s, py::slice slice) -> Sequence* { + .def("__len__", &Sequence::size) + /// Optional sequence protocol operations + .def("__iter__", [](const Sequence &s) { return py::make_iterator(s.begin(), s.end()); }, + py::keep_alive<0, 1>() /* Essential: keep object alive while iterator exists */) + .def("__contains__", [](const Sequence &s, float v) { return s.contains(v); }) + .def("__reversed__", [](const Sequence &s) -> Sequence { return s.reversed(); }) + /// Slicing protocol (optional) + .def("__getitem__", [](const Sequence &s, py::slice slice) -> Sequence* { size_t start, stop, step, slicelength; if (!slice.compute(s.size(), &start, &stop, &step, &slicelength)) throw py::error_already_set(); Sequence *seq = new Sequence(slicelength); - for (size_t i=0; i<slicelength; ++i) { + for (size_t i = 0; i < slicelength; ++i) { (*seq)[i] = s[start]; start += step; } return seq; }) - .def("__setitem__", [](Sequence &s, py::slice slice, const Sequence &value) { + .def("__setitem__", [](Sequence &s, py::slice slice, const Sequence &value) { size_t start, stop, step, slicelength; if (!slice.compute(s.size(), &start, &stop, &step, &slicelength)) throw py::error_already_set(); if (slicelength != value.size()) throw std::runtime_error("Left and right hand size of slice assignment have different sizes!"); - for (size_t i=0; i<slicelength; ++i) { + for (size_t i = 0; i < slicelength; ++i) { s[start] = value[i]; start += step; } }) - /// Comparisons - .def(py::self == py::self) - .def(py::self != py::self); - // Could also define py::self + py::self for concatenation, etc. - - py::class_<StringMap> map(m, "StringMap"); + /// Comparisons + .def(py::self == py::self) + .def(py::self != py::self) + // Could also define py::self + py::self for concatenation, etc. + ; - map .def(py::init<>()) + // test_map_iterator + // Interface of a map-like object that isn't (directly) an unordered_map, but provides some basic + // map-like functionality. + class StringMap { + public: + StringMap() = default; + StringMap(std::unordered_map<std::string, std::string> init) + : map(std::move(init)) {} + + void set(std::string key, std::string val) { map[key] = val; } + std::string get(std::string key) const { return map.at(key); } + size_t size() const { return map.size(); } + private: + std::unordered_map<std::string, std::string> map; + public: + decltype(map.cbegin()) begin() const { return map.cbegin(); } + decltype(map.cend()) end() const { return map.cend(); } + }; + py::class_<StringMap>(m, "StringMap") + .def(py::init<>()) .def(py::init<std::unordered_map<std::string, std::string>>()) .def("__getitem__", [](const StringMap &map, std::string key) { try { return map.get(key); } catch (const std::out_of_range&) { throw py::key_error("key '" + key + "' does not exist"); } - }) + }) .def("__setitem__", &StringMap::set) .def("__len__", &StringMap::size) .def("__iter__", [](const StringMap &map) { return py::make_key_iterator(map.begin(), map.end()); }, @@ -278,14 +236,23 @@ test_initializer sequences_and_iterators([](py::module &pm) { py::keep_alive<0, 1>()) ; + // test_generalized_iterators + class IntPairs { + public: + IntPairs(std::vector<std::pair<int, int>> data) : data_(std::move(data)) {} + const std::pair<int, int>* begin() const { return data_.data(); } + private: + std::vector<std::pair<int, int>> data_; + }; py::class_<IntPairs>(m, "IntPairs") .def(py::init<std::vector<std::pair<int, int>>>()) .def("nonzero", [](const IntPairs& s) { return py::make_iterator(NonZeroIterator<std::pair<int, int>>(s.begin()), NonZeroSentinel()); - }, py::keep_alive<0, 1>()) + }, py::keep_alive<0, 1>()) .def("nonzero_keys", [](const IntPairs& s) { return py::make_key_iterator(NonZeroIterator<std::pair<int, int>>(s.begin()), NonZeroSentinel()); - }, py::keep_alive<0, 1>()); + }, py::keep_alive<0, 1>()) + ; #if 0 @@ -315,6 +282,7 @@ test_initializer sequences_and_iterators([](py::module &pm) { .def("__iter__", [](py::object s) { return PySequenceIterator(s.cast<const Sequence &>(), s); }) #endif + // test_python_iterator_in_cpp m.def("object_to_list", [](py::object o) { auto l = py::list(); for (auto item : o) { @@ -348,7 +316,19 @@ test_initializer sequences_and_iterators([](py::module &pm) { }); }); - m.def("tuple_iterator", [](py::tuple x) { return test_random_access_iterator(x); }); - m.def("list_iterator", [](py::list x) { return test_random_access_iterator(x); }); - m.def("sequence_iterator", [](py::sequence x) { return test_random_access_iterator(x); }); -}); + m.def("tuple_iterator", &test_random_access_iterator<py::tuple>); + m.def("list_iterator", &test_random_access_iterator<py::list>); + m.def("sequence_iterator", &test_random_access_iterator<py::sequence>); + + // test_iterator_passthrough + // #181: iterator passthrough did not compile + m.def("iterator_passthrough", [](py::iterator s) -> py::iterator { + return py::make_iterator(std::begin(s), std::end(s)); + }); + + // test_iterator_rvp + // #388: Can't make iterators via make_iterator() with different r/v policies + static std::vector<int> list = { 1, 2, 3 }; + m.def("make_iterator_1", []() { return py::make_iterator<py::return_value_policy::copy>(list); }); + m.def("make_iterator_2", []() { return py::make_iterator<py::return_value_policy::automatic>(list); }); +} diff --git a/ext/pybind11/tests/test_sequences_and_iterators.py b/ext/pybind11/tests/test_sequences_and_iterators.py index 30b6aaf4b..640ca07bd 100644 --- a/ext/pybind11/tests/test_sequences_and_iterators.py +++ b/ext/pybind11/tests/test_sequences_and_iterators.py @@ -1,4 +1,6 @@ import pytest +from pybind11_tests import sequences_and_iterators as m +from pybind11_tests import ConstructorStats def isclose(a, b, rel_tol=1e-05, abs_tol=0.0): @@ -11,24 +13,30 @@ def allclose(a_list, b_list, rel_tol=1e-05, abs_tol=0.0): def test_generalized_iterators(): - from pybind11_tests.sequences_and_iterators import IntPairs + assert list(m.IntPairs([(1, 2), (3, 4), (0, 5)]).nonzero()) == [(1, 2), (3, 4)] + assert list(m.IntPairs([(1, 2), (2, 0), (0, 3), (4, 5)]).nonzero()) == [(1, 2)] + assert list(m.IntPairs([(0, 3), (1, 2), (3, 4)]).nonzero()) == [] - assert list(IntPairs([(1, 2), (3, 4), (0, 5)]).nonzero()) == [(1, 2), (3, 4)] - assert list(IntPairs([(1, 2), (2, 0), (0, 3), (4, 5)]).nonzero()) == [(1, 2)] - assert list(IntPairs([(0, 3), (1, 2), (3, 4)]).nonzero()) == [] + assert list(m.IntPairs([(1, 2), (3, 4), (0, 5)]).nonzero_keys()) == [1, 3] + assert list(m.IntPairs([(1, 2), (2, 0), (0, 3), (4, 5)]).nonzero_keys()) == [1] + assert list(m.IntPairs([(0, 3), (1, 2), (3, 4)]).nonzero_keys()) == [] - assert list(IntPairs([(1, 2), (3, 4), (0, 5)]).nonzero_keys()) == [1, 3] - assert list(IntPairs([(1, 2), (2, 0), (0, 3), (4, 5)]).nonzero_keys()) == [1] - assert list(IntPairs([(0, 3), (1, 2), (3, 4)]).nonzero_keys()) == [] + # __next__ must continue to raise StopIteration + it = m.IntPairs([(0, 0)]).nonzero() + for _ in range(3): + with pytest.raises(StopIteration): + next(it) + it = m.IntPairs([(0, 0)]).nonzero_keys() + for _ in range(3): + with pytest.raises(StopIteration): + next(it) -def test_sequence(): - from pybind11_tests import ConstructorStats - from pybind11_tests.sequences_and_iterators import Sequence - cstats = ConstructorStats.get(Sequence) +def test_sequence(): + cstats = ConstructorStats.get(m.Sequence) - s = Sequence(5) + s = m.Sequence(5) assert cstats.values() == ['of size', '5'] assert "Sequence" in repr(s) @@ -45,16 +53,24 @@ def test_sequence(): rev2 = s[::-1] assert cstats.values() == ['of size', '5'] + it = iter(m.Sequence(0)) + for _ in range(3): # __next__ must continue to raise StopIteration + with pytest.raises(StopIteration): + next(it) + assert cstats.values() == ['of size', '0'] + expected = [0, 56.78, 0, 0, 12.34] assert allclose(rev, expected) assert allclose(rev2, expected) assert rev == rev2 - rev[0::2] = Sequence([2.0, 2.0, 2.0]) + rev[0::2] = m.Sequence([2.0, 2.0, 2.0]) assert cstats.values() == ['of size', '3', 'from std::vector'] assert allclose(rev, [2, 56.78, 2, 0, 2]) + assert cstats.alive() == 4 + del it assert cstats.alive() == 3 del s assert cstats.alive() == 2 @@ -72,28 +88,29 @@ def test_sequence(): def test_map_iterator(): - from pybind11_tests.sequences_and_iterators import StringMap - - m = StringMap({'hi': 'bye', 'black': 'white'}) - assert m['hi'] == 'bye' - assert len(m) == 2 - assert m['black'] == 'white' + sm = m.StringMap({'hi': 'bye', 'black': 'white'}) + assert sm['hi'] == 'bye' + assert len(sm) == 2 + assert sm['black'] == 'white' with pytest.raises(KeyError): - assert m['orange'] - m['orange'] = 'banana' - assert m['orange'] == 'banana' + assert sm['orange'] + sm['orange'] = 'banana' + assert sm['orange'] == 'banana' expected = {'hi': 'bye', 'black': 'white', 'orange': 'banana'} - for k in m: - assert m[k] == expected[k] - for k, v in m.items(): + for k in sm: + assert sm[k] == expected[k] + for k, v in sm.items(): assert v == expected[k] + it = iter(m.StringMap({})) + for _ in range(3): # __next__ must continue to raise StopIteration + with pytest.raises(StopIteration): + next(it) -def test_python_iterator_in_cpp(): - import pybind11_tests.sequences_and_iterators as m +def test_python_iterator_in_cpp(): t = (1, 2, 3) assert m.object_to_list(t) == [1, 2, 3] assert m.object_to_list(iter(t)) == [1, 2, 3] @@ -123,3 +140,19 @@ def test_python_iterator_in_cpp(): assert all(m.tuple_iterator(tuple(r))) assert all(m.list_iterator(list(r))) assert all(m.sequence_iterator(r)) + + +def test_iterator_passthrough(): + """#181: iterator passthrough did not compile""" + from pybind11_tests.sequences_and_iterators import iterator_passthrough + + assert list(iterator_passthrough(iter([3, 5, 7, 9, 11, 13, 15]))) == [3, 5, 7, 9, 11, 13, 15] + + +def test_iterator_rvp(): + """#388: Can't make iterators via make_iterator() with different r/v policies """ + import pybind11_tests.sequences_and_iterators as m + + assert list(m.make_iterator_1()) == [1, 2, 3] + assert list(m.make_iterator_2()) == [1, 2, 3] + assert not isinstance(m.make_iterator_1(), type(m.make_iterator_2())) diff --git a/ext/pybind11/tests/test_smart_ptr.cpp b/ext/pybind11/tests/test_smart_ptr.cpp index 83c1c018a..dccb1e9be 100644 --- a/ext/pybind11/tests/test_smart_ptr.cpp +++ b/ext/pybind11/tests/test_smart_ptr.cpp @@ -8,88 +8,19 @@ BSD-style license that can be found in the LICENSE file. */ +#if defined(_MSC_VER) && _MSC_VER < 1910 +# pragma warning(disable: 4702) // unreachable code in system header +#endif + #include "pybind11_tests.h" #include "object.h" -/// Custom object with builtin reference counting (see 'object.h' for the implementation) -class MyObject1 : public Object { -public: - MyObject1(int value) : value(value) { - print_created(this, toString()); - } - - std::string toString() const { - return "MyObject1[" + std::to_string(value) + "]"; - } - -protected: - virtual ~MyObject1() { - print_destroyed(this); - } - -private: - int value; -}; - -/// Object managed by a std::shared_ptr<> -class MyObject2 { -public: - MyObject2(int value) : value(value) { - print_created(this, toString()); - } - - std::string toString() const { - return "MyObject2[" + std::to_string(value) + "]"; - } - - virtual ~MyObject2() { - print_destroyed(this); - } - -private: - int value; -}; - -/// Object managed by a std::shared_ptr<>, additionally derives from std::enable_shared_from_this<> -class MyObject3 : public std::enable_shared_from_this<MyObject3> { -public: - MyObject3(int value) : value(value) { - print_created(this, toString()); - } - - std::string toString() const { - return "MyObject3[" + std::to_string(value) + "]"; - } - - virtual ~MyObject3() { - print_destroyed(this); - } - -private: - int value; -}; - -class MyObject4 { -public: - MyObject4(int value) : value{value} { - print_created(this); - } - int value; -private: - ~MyObject4() { - print_destroyed(this); - } -}; - -/// Make pybind aware of the ref-counted wrapper type (s) +// Make pybind aware of the ref-counted wrapper type (s): // ref<T> is a wrapper for 'Object' which uses intrusive reference counting // It is always possible to construct a ref<T> from an Object* pointer without // possible incosistencies, hence the 'true' argument at the end. PYBIND11_DECLARE_HOLDER_TYPE(T, ref<T>, true); -PYBIND11_DECLARE_HOLDER_TYPE(T, std::shared_ptr<T>); // Not required any more for std::shared_ptr, - // but it should compile without error - // Make pybind11 aware of the non-standard getter member function namespace pybind11 { namespace detail { template <typename T> @@ -98,140 +29,157 @@ namespace pybind11 { namespace detail { }; }} -Object *make_object_1() { return new MyObject1(1); } -ref<Object> make_object_2() { return new MyObject1(2); } - -MyObject1 *make_myobject1_1() { return new MyObject1(4); } -ref<MyObject1> make_myobject1_2() { return new MyObject1(5); } - -MyObject2 *make_myobject2_1() { return new MyObject2(6); } -std::shared_ptr<MyObject2> make_myobject2_2() { return std::make_shared<MyObject2>(7); } +// The following is not required anymore for std::shared_ptr, but it should compile without error: +PYBIND11_DECLARE_HOLDER_TYPE(T, std::shared_ptr<T>); -MyObject3 *make_myobject3_1() { return new MyObject3(8); } -std::shared_ptr<MyObject3> make_myobject3_2() { return std::make_shared<MyObject3>(9); } +// This is just a wrapper around unique_ptr, but with extra fields to deliberately bloat up the +// holder size to trigger the non-simple-layout internal instance layout for single inheritance with +// large holder type: +template <typename T> class huge_unique_ptr { + std::unique_ptr<T> ptr; + uint64_t padding[10]; +public: + huge_unique_ptr(T *p) : ptr(p) {}; + T *get() { return ptr.get(); } +}; +PYBIND11_DECLARE_HOLDER_TYPE(T, huge_unique_ptr<T>); -void print_object_1(const Object *obj) { py::print(obj->toString()); } -void print_object_2(ref<Object> obj) { py::print(obj->toString()); } -void print_object_3(const ref<Object> &obj) { py::print(obj->toString()); } -void print_object_4(const ref<Object> *obj) { py::print((*obj)->toString()); } +// Simple custom holder that works like unique_ptr +template <typename T> +class custom_unique_ptr { + std::unique_ptr<T> impl; +public: + custom_unique_ptr(T* p) : impl(p) { } + T* get() const { return impl.get(); } + T* release_ptr() { return impl.release(); } +}; +PYBIND11_DECLARE_HOLDER_TYPE(T, custom_unique_ptr<T>); -void print_myobject1_1(const MyObject1 *obj) { py::print(obj->toString()); } -void print_myobject1_2(ref<MyObject1> obj) { py::print(obj->toString()); } -void print_myobject1_3(const ref<MyObject1> &obj) { py::print(obj->toString()); } -void print_myobject1_4(const ref<MyObject1> *obj) { py::print((*obj)->toString()); } -void print_myobject2_1(const MyObject2 *obj) { py::print(obj->toString()); } -void print_myobject2_2(std::shared_ptr<MyObject2> obj) { py::print(obj->toString()); } -void print_myobject2_3(const std::shared_ptr<MyObject2> &obj) { py::print(obj->toString()); } -void print_myobject2_4(const std::shared_ptr<MyObject2> *obj) { py::print((*obj)->toString()); } +TEST_SUBMODULE(smart_ptr, m) { -void print_myobject3_1(const MyObject3 *obj) { py::print(obj->toString()); } -void print_myobject3_2(std::shared_ptr<MyObject3> obj) { py::print(obj->toString()); } -void print_myobject3_3(const std::shared_ptr<MyObject3> &obj) { py::print(obj->toString()); } -void print_myobject3_4(const std::shared_ptr<MyObject3> *obj) { py::print((*obj)->toString()); } + // test_smart_ptr -test_initializer smart_ptr([](py::module &m) { + // Object implementation in `object.h` py::class_<Object, ref<Object>> obj(m, "Object"); obj.def("getRefCount", &Object::getRefCount); + // Custom object with builtin reference counting (see 'object.h' for the implementation) + class MyObject1 : public Object { + public: + MyObject1(int value) : value(value) { print_created(this, toString()); } + std::string toString() const { return "MyObject1[" + std::to_string(value) + "]"; } + protected: + virtual ~MyObject1() { print_destroyed(this); } + private: + int value; + }; py::class_<MyObject1, ref<MyObject1>>(m, "MyObject1", obj) .def(py::init<int>()); + py::implicitly_convertible<py::int_, MyObject1>(); - m.def("test_object1_refcounting", - []() -> bool { - ref<MyObject1> o = new MyObject1(0); - bool good = o->getRefCount() == 1; - py::object o2 = py::cast(o, py::return_value_policy::reference); - // always request (partial) ownership for objects with intrusive - // reference counting even when using the 'reference' RVP - good &= o->getRefCount() == 2; - return good; - } - ); - - m.def("make_object_1", &make_object_1); - m.def("make_object_2", &make_object_2); - m.def("make_myobject1_1", &make_myobject1_1); - m.def("make_myobject1_2", &make_myobject1_2); - m.def("print_object_1", &print_object_1); - m.def("print_object_2", &print_object_2); - m.def("print_object_3", &print_object_3); - m.def("print_object_4", &print_object_4); - m.def("print_myobject1_1", &print_myobject1_1); - m.def("print_myobject1_2", &print_myobject1_2); - m.def("print_myobject1_3", &print_myobject1_3); - m.def("print_myobject1_4", &print_myobject1_4); + m.def("make_object_1", []() -> Object * { return new MyObject1(1); }); + m.def("make_object_2", []() -> ref<Object> { return new MyObject1(2); }); + m.def("make_myobject1_1", []() -> MyObject1 * { return new MyObject1(4); }); + m.def("make_myobject1_2", []() -> ref<MyObject1> { return new MyObject1(5); }); + m.def("print_object_1", [](const Object *obj) { py::print(obj->toString()); }); + m.def("print_object_2", [](ref<Object> obj) { py::print(obj->toString()); }); + m.def("print_object_3", [](const ref<Object> &obj) { py::print(obj->toString()); }); + m.def("print_object_4", [](const ref<Object> *obj) { py::print((*obj)->toString()); }); + m.def("print_myobject1_1", [](const MyObject1 *obj) { py::print(obj->toString()); }); + m.def("print_myobject1_2", [](ref<MyObject1> obj) { py::print(obj->toString()); }); + m.def("print_myobject1_3", [](const ref<MyObject1> &obj) { py::print(obj->toString()); }); + m.def("print_myobject1_4", [](const ref<MyObject1> *obj) { py::print((*obj)->toString()); }); + // Expose constructor stats for the ref type + m.def("cstats_ref", &ConstructorStats::get<ref_tag>); + + + // Object managed by a std::shared_ptr<> + class MyObject2 { + public: + MyObject2(int value) : value(value) { print_created(this, toString()); } + std::string toString() const { return "MyObject2[" + std::to_string(value) + "]"; } + virtual ~MyObject2() { print_destroyed(this); } + private: + int value; + }; py::class_<MyObject2, std::shared_ptr<MyObject2>>(m, "MyObject2") .def(py::init<int>()); - m.def("make_myobject2_1", &make_myobject2_1); - m.def("make_myobject2_2", &make_myobject2_2); - m.def("print_myobject2_1", &print_myobject2_1); - m.def("print_myobject2_2", &print_myobject2_2); - m.def("print_myobject2_3", &print_myobject2_3); - m.def("print_myobject2_4", &print_myobject2_4); - + m.def("make_myobject2_1", []() { return new MyObject2(6); }); + m.def("make_myobject2_2", []() { return std::make_shared<MyObject2>(7); }); + m.def("print_myobject2_1", [](const MyObject2 *obj) { py::print(obj->toString()); }); + m.def("print_myobject2_2", [](std::shared_ptr<MyObject2> obj) { py::print(obj->toString()); }); + m.def("print_myobject2_3", [](const std::shared_ptr<MyObject2> &obj) { py::print(obj->toString()); }); + m.def("print_myobject2_4", [](const std::shared_ptr<MyObject2> *obj) { py::print((*obj)->toString()); }); + + // Object managed by a std::shared_ptr<>, additionally derives from std::enable_shared_from_this<> + class MyObject3 : public std::enable_shared_from_this<MyObject3> { + public: + MyObject3(int value) : value(value) { print_created(this, toString()); } + std::string toString() const { return "MyObject3[" + std::to_string(value) + "]"; } + virtual ~MyObject3() { print_destroyed(this); } + private: + int value; + }; py::class_<MyObject3, std::shared_ptr<MyObject3>>(m, "MyObject3") .def(py::init<int>()); - m.def("make_myobject3_1", &make_myobject3_1); - m.def("make_myobject3_2", &make_myobject3_2); - m.def("print_myobject3_1", &print_myobject3_1); - m.def("print_myobject3_2", &print_myobject3_2); - m.def("print_myobject3_3", &print_myobject3_3); - m.def("print_myobject3_4", &print_myobject3_4); - + m.def("make_myobject3_1", []() { return new MyObject3(8); }); + m.def("make_myobject3_2", []() { return std::make_shared<MyObject3>(9); }); + m.def("print_myobject3_1", [](const MyObject3 *obj) { py::print(obj->toString()); }); + m.def("print_myobject3_2", [](std::shared_ptr<MyObject3> obj) { py::print(obj->toString()); }); + m.def("print_myobject3_3", [](const std::shared_ptr<MyObject3> &obj) { py::print(obj->toString()); }); + m.def("print_myobject3_4", [](const std::shared_ptr<MyObject3> *obj) { py::print((*obj)->toString()); }); + + // test_smart_ptr_refcounting + m.def("test_object1_refcounting", []() { + ref<MyObject1> o = new MyObject1(0); + bool good = o->getRefCount() == 1; + py::object o2 = py::cast(o, py::return_value_policy::reference); + // always request (partial) ownership for objects with intrusive + // reference counting even when using the 'reference' RVP + good &= o->getRefCount() == 2; + return good; + }); + + // test_unique_nodelete + // Object with a private destructor + class MyObject4 { + public: + MyObject4(int value) : value{value} { print_created(this); } + int value; + private: + ~MyObject4() { print_destroyed(this); } + }; py::class_<MyObject4, std::unique_ptr<MyObject4, py::nodelete>>(m, "MyObject4") .def(py::init<int>()) .def_readwrite("value", &MyObject4::value); - py::implicitly_convertible<py::int_, MyObject1>(); - - // Expose constructor stats for the ref type - m.def("cstats_ref", &ConstructorStats::get<ref_tag>); -}); - -struct SharedPtrRef { - struct A { - A() { print_created(this); } - A(const A &) { print_copy_created(this); } - A(A &&) { print_move_created(this); } - ~A() { print_destroyed(this); } + // test_large_holder + class MyObject5 { // managed by huge_unique_ptr + public: + MyObject5(int value) : value{value} { print_created(this); } + ~MyObject5() { print_destroyed(this); } + int value; }; - - A value = {}; - std::shared_ptr<A> shared = std::make_shared<A>(); -}; - -struct SharedFromThisRef { - struct B : std::enable_shared_from_this<B> { - B() { print_created(this); } - B(const B &) : std::enable_shared_from_this<B>() { print_copy_created(this); } - B(B &&) : std::enable_shared_from_this<B>() { print_move_created(this); } - ~B() { print_destroyed(this); } + py::class_<MyObject5, huge_unique_ptr<MyObject5>>(m, "MyObject5") + .def(py::init<int>()) + .def_readwrite("value", &MyObject5::value); + + // test_shared_ptr_and_references + struct SharedPtrRef { + struct A { + A() { print_created(this); } + A(const A &) { print_copy_created(this); } + A(A &&) { print_move_created(this); } + ~A() { print_destroyed(this); } + }; + + A value = {}; + std::shared_ptr<A> shared = std::make_shared<A>(); }; - - B value = {}; - std::shared_ptr<B> shared = std::make_shared<B>(); -}; - -template <typename T> -class CustomUniquePtr { - std::unique_ptr<T> impl; - -public: - CustomUniquePtr(T* p) : impl(p) { } - T* get() const { return impl.get(); } - T* release_ptr() { return impl.release(); } -}; - -PYBIND11_DECLARE_HOLDER_TYPE(T, CustomUniquePtr<T>); - -test_initializer smart_ptr_and_references([](py::module &pm) { - auto m = pm.def_submodule("smart_ptr"); - using A = SharedPtrRef::A; py::class_<A, std::shared_ptr<A>>(m, "A"); - py::class_<SharedPtrRef>(m, "SharedPtrRef") .def(py::init<>()) .def_readonly("ref", &SharedPtrRef::value) @@ -243,9 +191,20 @@ test_initializer smart_ptr_and_references([](py::module &pm) { .def("set_ref", [](SharedPtrRef &, const A &) { return true; }) .def("set_holder", [](SharedPtrRef &, std::shared_ptr<A>) { return true; }); + // test_shared_ptr_from_this_and_references + struct SharedFromThisRef { + struct B : std::enable_shared_from_this<B> { + B() { print_created(this); } + B(const B &) : std::enable_shared_from_this<B>() { print_copy_created(this); } + B(B &&) : std::enable_shared_from_this<B>() { print_move_created(this); } + ~B() { print_destroyed(this); } + }; + + B value = {}; + std::shared_ptr<B> shared = std::make_shared<B>(); + }; using B = SharedFromThisRef::B; py::class_<B, std::shared_ptr<B>>(m, "B"); - py::class_<SharedFromThisRef>(m, "SharedFromThisRef") .def(py::init<>()) .def_readonly("bad_wp", &SharedFromThisRef::value) @@ -258,17 +217,54 @@ test_initializer smart_ptr_and_references([](py::module &pm) { .def("set_ref", [](SharedFromThisRef &, const B &) { return true; }) .def("set_holder", [](SharedFromThisRef &, std::shared_ptr<B>) { return true; }); + // Issue #865: shared_from_this doesn't work with virtual inheritance + struct SharedFromThisVBase : std::enable_shared_from_this<SharedFromThisVBase> { + virtual ~SharedFromThisVBase() = default; + }; + struct SharedFromThisVirt : virtual SharedFromThisVBase {}; + static std::shared_ptr<SharedFromThisVirt> sft(new SharedFromThisVirt()); + py::class_<SharedFromThisVirt, std::shared_ptr<SharedFromThisVirt>>(m, "SharedFromThisVirt") + .def_static("get", []() { return sft.get(); }); + + // test_move_only_holder struct C { C() { print_created(this); } ~C() { print_destroyed(this); } }; + py::class_<C, custom_unique_ptr<C>>(m, "TypeWithMoveOnlyHolder") + .def_static("make", []() { return custom_unique_ptr<C>(new C); }); - py::class_<C, CustomUniquePtr<C>>(m, "TypeWithMoveOnlyHolder") - .def_static("make", []() { return CustomUniquePtr<C>(new C); }); - + // test_smart_ptr_from_default struct HeldByDefaultHolder { }; - py::class_<HeldByDefaultHolder>(m, "HeldByDefaultHolder") .def(py::init<>()) .def_static("load_shared_ptr", [](std::shared_ptr<HeldByDefaultHolder>) {}); -}); + + // test_shared_ptr_gc + // #187: issue involving std::shared_ptr<> return value policy & garbage collection + struct ElementBase { virtual void foo() { } /* Force creation of virtual table */ }; + py::class_<ElementBase, std::shared_ptr<ElementBase>>(m, "ElementBase"); + + struct ElementA : ElementBase { + ElementA(int v) : v(v) { } + int value() { return v; } + int v; + }; + py::class_<ElementA, ElementBase, std::shared_ptr<ElementA>>(m, "ElementA") + .def(py::init<int>()) + .def("value", &ElementA::value); + + struct ElementList { + void add(std::shared_ptr<ElementBase> e) { l.push_back(e); } + std::vector<std::shared_ptr<ElementBase>> l; + }; + py::class_<ElementList, std::shared_ptr<ElementList>>(m, "ElementList") + .def(py::init<>()) + .def("add", &ElementList::add) + .def("get", [](ElementList &el) { + py::list list; + for (auto &e : el.l) + list.append(py::cast(e)); + return list; + }); +} diff --git a/ext/pybind11/tests/test_smart_ptr.py b/ext/pybind11/tests/test_smart_ptr.py index b5af3bd38..4dfe0036f 100644 --- a/ext/pybind11/tests/test_smart_ptr.py +++ b/ext/pybind11/tests/test_smart_ptr.py @@ -1,40 +1,35 @@ import pytest +from pybind11_tests import smart_ptr as m from pybind11_tests import ConstructorStats def test_smart_ptr(capture): # Object1 - from pybind11_tests import (MyObject1, make_object_1, make_object_2, - print_object_1, print_object_2, print_object_3, print_object_4) - - for i, o in enumerate([make_object_1(), make_object_2(), MyObject1(3)], start=1): + for i, o in enumerate([m.make_object_1(), m.make_object_2(), m.MyObject1(3)], start=1): assert o.getRefCount() == 1 with capture: - print_object_1(o) - print_object_2(o) - print_object_3(o) - print_object_4(o) + m.print_object_1(o) + m.print_object_2(o) + m.print_object_3(o) + m.print_object_4(o) assert capture == "MyObject1[{i}]\n".format(i=i) * 4 - from pybind11_tests import (make_myobject1_1, make_myobject1_2, - print_myobject1_1, print_myobject1_2, - print_myobject1_3, print_myobject1_4) - - for i, o in enumerate([make_myobject1_1(), make_myobject1_2(), MyObject1(6), 7], start=4): + for i, o in enumerate([m.make_myobject1_1(), m.make_myobject1_2(), m.MyObject1(6), 7], + start=4): print(o) with capture: if not isinstance(o, int): - print_object_1(o) - print_object_2(o) - print_object_3(o) - print_object_4(o) - print_myobject1_1(o) - print_myobject1_2(o) - print_myobject1_3(o) - print_myobject1_4(o) + m.print_object_1(o) + m.print_object_2(o) + m.print_object_3(o) + m.print_object_4(o) + m.print_myobject1_1(o) + m.print_myobject1_2(o) + m.print_myobject1_3(o) + m.print_myobject1_4(o) assert capture == "MyObject1[{i}]\n".format(i=i) * (4 if isinstance(o, int) else 8) - cstats = ConstructorStats.get(MyObject1) + cstats = ConstructorStats.get(m.MyObject1) assert cstats.alive() == 0 expected_values = ['MyObject1[{}]'.format(i) for i in range(1, 7)] + ['MyObject1[7]'] * 4 assert cstats.values() == expected_values @@ -45,21 +40,16 @@ def test_smart_ptr(capture): assert cstats.move_assignments == 0 # Object2 - from pybind11_tests import (MyObject2, make_myobject2_1, make_myobject2_2, - make_myobject3_1, make_myobject3_2, - print_myobject2_1, print_myobject2_2, - print_myobject2_3, print_myobject2_4) - - for i, o in zip([8, 6, 7], [MyObject2(8), make_myobject2_1(), make_myobject2_2()]): + for i, o in zip([8, 6, 7], [m.MyObject2(8), m.make_myobject2_1(), m.make_myobject2_2()]): print(o) with capture: - print_myobject2_1(o) - print_myobject2_2(o) - print_myobject2_3(o) - print_myobject2_4(o) + m.print_myobject2_1(o) + m.print_myobject2_2(o) + m.print_myobject2_3(o) + m.print_myobject2_4(o) assert capture == "MyObject2[{i}]\n".format(i=i) * 4 - cstats = ConstructorStats.get(MyObject2) + cstats = ConstructorStats.get(m.MyObject2) assert cstats.alive() == 1 o = None assert cstats.alive() == 0 @@ -71,19 +61,16 @@ def test_smart_ptr(capture): assert cstats.move_assignments == 0 # Object3 - from pybind11_tests import (MyObject3, print_myobject3_1, print_myobject3_2, - print_myobject3_3, print_myobject3_4) - - for i, o in zip([9, 8, 9], [MyObject3(9), make_myobject3_1(), make_myobject3_2()]): + for i, o in zip([9, 8, 9], [m.MyObject3(9), m.make_myobject3_1(), m.make_myobject3_2()]): print(o) with capture: - print_myobject3_1(o) - print_myobject3_2(o) - print_myobject3_3(o) - print_myobject3_4(o) + m.print_myobject3_1(o) + m.print_myobject3_2(o) + m.print_myobject3_3(o) + m.print_myobject3_4(o) assert capture == "MyObject3[{i}]\n".format(i=i) * 4 - cstats = ConstructorStats.get(MyObject3) + cstats = ConstructorStats.get(m.MyObject3) assert cstats.alive() == 1 o = None assert cstats.alive() == 0 @@ -94,10 +81,8 @@ def test_smart_ptr(capture): assert cstats.copy_assignments == 0 assert cstats.move_assignments == 0 - # Object and ref - from pybind11_tests import Object, cstats_ref - - cstats = ConstructorStats.get(Object) + # Object + cstats = ConstructorStats.get(m.Object) assert cstats.alive() == 0 assert cstats.values() == [] assert cstats.default_constructions == 10 @@ -106,7 +91,8 @@ def test_smart_ptr(capture): assert cstats.copy_assignments == 0 assert cstats.move_assignments == 0 - cstats = cstats_ref() + # ref<> + cstats = m.cstats_ref() assert cstats.alive() == 0 assert cstats.values() == ['from pointer'] * 10 assert cstats.default_constructions == 30 @@ -117,26 +103,30 @@ def test_smart_ptr(capture): def test_smart_ptr_refcounting(): - from pybind11_tests import test_object1_refcounting - assert test_object1_refcounting() + assert m.test_object1_refcounting() def test_unique_nodelete(): - from pybind11_tests import MyObject4 - o = MyObject4(23) + o = m.MyObject4(23) assert o.value == 23 - cstats = ConstructorStats.get(MyObject4) + cstats = ConstructorStats.get(m.MyObject4) assert cstats.alive() == 1 del o - cstats = ConstructorStats.get(MyObject4) assert cstats.alive() == 1 # Leak, but that's intentional -def test_shared_ptr_and_references(): - from pybind11_tests.smart_ptr import SharedPtrRef, A +def test_large_holder(): + o = m.MyObject5(5) + assert o.value == 5 + cstats = ConstructorStats.get(m.MyObject5) + assert cstats.alive() == 1 + del o + assert cstats.alive() == 0 - s = SharedPtrRef() - stats = ConstructorStats.get(A) + +def test_shared_ptr_and_references(): + s = m.SharedPtrRef() + stats = ConstructorStats.get(m.A) assert stats.alive() == 2 ref = s.ref # init_holder_helper(holder_ptr=false, owned=false) @@ -166,10 +156,8 @@ def test_shared_ptr_and_references(): def test_shared_ptr_from_this_and_references(): - from pybind11_tests.smart_ptr import SharedFromThisRef, B - - s = SharedFromThisRef() - stats = ConstructorStats.get(B) + s = m.SharedFromThisRef() + stats = ConstructorStats.get(m.B) assert stats.alive() == 2 ref = s.ref # init_holder_helper(holder_ptr=false, owned=false, bad_wp=false) @@ -202,21 +190,31 @@ def test_shared_ptr_from_this_and_references(): del ref, bad_wp, copy, holder_ref, holder_copy, s assert stats.alive() == 0 + z = m.SharedFromThisVirt.get() + y = m.SharedFromThisVirt.get() + assert y is z -def test_move_only_holder(): - from pybind11_tests.smart_ptr import TypeWithMoveOnlyHolder - a = TypeWithMoveOnlyHolder.make() - stats = ConstructorStats.get(TypeWithMoveOnlyHolder) +def test_move_only_holder(): + a = m.TypeWithMoveOnlyHolder.make() + stats = ConstructorStats.get(m.TypeWithMoveOnlyHolder) assert stats.alive() == 1 del a assert stats.alive() == 0 def test_smart_ptr_from_default(): - from pybind11_tests.smart_ptr import HeldByDefaultHolder - - instance = HeldByDefaultHolder() + instance = m.HeldByDefaultHolder() with pytest.raises(RuntimeError) as excinfo: - HeldByDefaultHolder.load_shared_ptr(instance) + m.HeldByDefaultHolder.load_shared_ptr(instance) assert "Unable to load a custom holder type from a default-holder instance" in str(excinfo) + + +def test_shared_ptr_gc(): + """#187: issue involving std::shared_ptr<> return value policy & garbage collection""" + el = m.ElementList() + for i in range(10): + el.add(m.ElementA(i)) + pytest.gc_collect() + for i, v in enumerate(el.get()): + assert i == v.value() diff --git a/ext/pybind11/tests/test_stl.cpp b/ext/pybind11/tests/test_stl.cpp new file mode 100644 index 000000000..7d53e9c18 --- /dev/null +++ b/ext/pybind11/tests/test_stl.cpp @@ -0,0 +1,238 @@ +/* + tests/test_stl.cpp -- STL type casters + + Copyright (c) 2017 Wenzel Jakob <wenzel.jakob@epfl.ch> + + All rights reserved. Use of this source code is governed by a + BSD-style license that can be found in the LICENSE file. +*/ + +#include "pybind11_tests.h" +#include <pybind11/stl.h> + +// Test with `std::variant` in C++17 mode, or with `boost::variant` in C++11/14 +#if PYBIND11_HAS_VARIANT +using std::variant; +#elif defined(PYBIND11_TEST_BOOST) && (!defined(_MSC_VER) || _MSC_VER >= 1910) +# include <boost/variant.hpp> +# define PYBIND11_HAS_VARIANT 1 +using boost::variant; + +namespace pybind11 { namespace detail { +template <typename... Ts> +struct type_caster<boost::variant<Ts...>> : variant_caster<boost::variant<Ts...>> {}; + +template <> +struct visit_helper<boost::variant> { + template <typename... Args> + static auto call(Args &&...args) -> decltype(boost::apply_visitor(args...)) { + return boost::apply_visitor(args...); + } +}; +}} // namespace pybind11::detail +#endif + +/// Issue #528: templated constructor +struct TplCtorClass { + template <typename T> TplCtorClass(const T &) { } + bool operator==(const TplCtorClass &) const { return true; } +}; + +namespace std { + template <> + struct hash<TplCtorClass> { size_t operator()(const TplCtorClass &) const { return 0; } }; +} + + +TEST_SUBMODULE(stl, m) { + // test_vector + m.def("cast_vector", []() { return std::vector<int>{1}; }); + m.def("load_vector", [](const std::vector<int> &v) { return v.at(0) == 1 && v.at(1) == 2; }); + // `std::vector<bool>` is special because it returns proxy objects instead of references + m.def("cast_bool_vector", []() { return std::vector<bool>{true, false}; }); + m.def("load_bool_vector", [](const std::vector<bool> &v) { + return v.at(0) == true && v.at(1) == false; + }); + // Unnumbered regression (caused by #936): pointers to stl containers aren't castable + static std::vector<RValueCaster> lvv{2}; + m.def("cast_ptr_vector", []() { return &lvv; }); + + // test_array + m.def("cast_array", []() { return std::array<int, 2> {{1 , 2}}; }); + m.def("load_array", [](const std::array<int, 2> &a) { return a[0] == 1 && a[1] == 2; }); + + // test_valarray + m.def("cast_valarray", []() { return std::valarray<int>{1, 4, 9}; }); + m.def("load_valarray", [](const std::valarray<int>& v) { + return v.size() == 3 && v[0] == 1 && v[1] == 4 && v[2] == 9; + }); + + // test_map + m.def("cast_map", []() { return std::map<std::string, std::string>{{"key", "value"}}; }); + m.def("load_map", [](const std::map<std::string, std::string> &map) { + return map.at("key") == "value" && map.at("key2") == "value2"; + }); + + // test_set + m.def("cast_set", []() { return std::set<std::string>{"key1", "key2"}; }); + m.def("load_set", [](const std::set<std::string> &set) { + return set.count("key1") && set.count("key2") && set.count("key3"); + }); + + // test_recursive_casting + m.def("cast_rv_vector", []() { return std::vector<RValueCaster>{2}; }); + m.def("cast_rv_array", []() { return std::array<RValueCaster, 3>(); }); + // NB: map and set keys are `const`, so while we technically do move them (as `const Type &&`), + // casters don't typically do anything with that, which means they fall to the `const Type &` + // caster. + m.def("cast_rv_map", []() { return std::unordered_map<std::string, RValueCaster>{{"a", RValueCaster{}}}; }); + m.def("cast_rv_nested", []() { + std::vector<std::array<std::list<std::unordered_map<std::string, RValueCaster>>, 2>> v; + v.emplace_back(); // add an array + v.back()[0].emplace_back(); // add a map to the array + v.back()[0].back().emplace("b", RValueCaster{}); + v.back()[0].back().emplace("c", RValueCaster{}); + v.back()[1].emplace_back(); // add a map to the array + v.back()[1].back().emplace("a", RValueCaster{}); + return v; + }); + static std::array<RValueCaster, 2> lva; + static std::unordered_map<std::string, RValueCaster> lvm{{"a", RValueCaster{}}, {"b", RValueCaster{}}}; + static std::unordered_map<std::string, std::vector<std::list<std::array<RValueCaster, 2>>>> lvn; + lvn["a"].emplace_back(); // add a list + lvn["a"].back().emplace_back(); // add an array + lvn["a"].emplace_back(); // another list + lvn["a"].back().emplace_back(); // add an array + lvn["b"].emplace_back(); // add a list + lvn["b"].back().emplace_back(); // add an array + lvn["b"].back().emplace_back(); // add another array + m.def("cast_lv_vector", []() -> const decltype(lvv) & { return lvv; }); + m.def("cast_lv_array", []() -> const decltype(lva) & { return lva; }); + m.def("cast_lv_map", []() -> const decltype(lvm) & { return lvm; }); + m.def("cast_lv_nested", []() -> const decltype(lvn) & { return lvn; }); + // #853: + m.def("cast_unique_ptr_vector", []() { + std::vector<std::unique_ptr<UserType>> v; + v.emplace_back(new UserType{7}); + v.emplace_back(new UserType{42}); + return v; + }); + + // test_move_out_container + struct MoveOutContainer { + struct Value { int value; }; + std::list<Value> move_list() const { return {{0}, {1}, {2}}; } + }; + py::class_<MoveOutContainer::Value>(m, "MoveOutContainerValue") + .def_readonly("value", &MoveOutContainer::Value::value); + py::class_<MoveOutContainer>(m, "MoveOutContainer") + .def(py::init<>()) + .def_property_readonly("move_list", &MoveOutContainer::move_list); + + // Class that can be move- and copy-constructed, but not assigned + struct NoAssign { + int value; + + explicit NoAssign(int value = 0) : value(value) { } + NoAssign(const NoAssign &) = default; + NoAssign(NoAssign &&) = default; + + NoAssign &operator=(const NoAssign &) = delete; + NoAssign &operator=(NoAssign &&) = delete; + }; + py::class_<NoAssign>(m, "NoAssign", "Class with no C++ assignment operators") + .def(py::init<>()) + .def(py::init<int>()); + +#ifdef PYBIND11_HAS_OPTIONAL + // test_optional + m.attr("has_optional") = true; + + using opt_int = std::optional<int>; + using opt_no_assign = std::optional<NoAssign>; + m.def("double_or_zero", [](const opt_int& x) -> int { + return x.value_or(0) * 2; + }); + m.def("half_or_none", [](int x) -> opt_int { + return x ? opt_int(x / 2) : opt_int(); + }); + m.def("test_nullopt", [](opt_int x) { + return x.value_or(42); + }, py::arg_v("x", std::nullopt, "None")); + m.def("test_no_assign", [](const opt_no_assign &x) { + return x ? x->value : 42; + }, py::arg_v("x", std::nullopt, "None")); + + m.def("nodefer_none_optional", [](std::optional<int>) { return true; }); + m.def("nodefer_none_optional", [](py::none) { return false; }); +#endif + +#ifdef PYBIND11_HAS_EXP_OPTIONAL + // test_exp_optional + m.attr("has_exp_optional") = true; + + using exp_opt_int = std::experimental::optional<int>; + using exp_opt_no_assign = std::experimental::optional<NoAssign>; + m.def("double_or_zero_exp", [](const exp_opt_int& x) -> int { + return x.value_or(0) * 2; + }); + m.def("half_or_none_exp", [](int x) -> exp_opt_int { + return x ? exp_opt_int(x / 2) : exp_opt_int(); + }); + m.def("test_nullopt_exp", [](exp_opt_int x) { + return x.value_or(42); + }, py::arg_v("x", std::experimental::nullopt, "None")); + m.def("test_no_assign_exp", [](const exp_opt_no_assign &x) { + return x ? x->value : 42; + }, py::arg_v("x", std::experimental::nullopt, "None")); +#endif + +#ifdef PYBIND11_HAS_VARIANT + static_assert(std::is_same<py::detail::variant_caster_visitor::result_type, py::handle>::value, + "visitor::result_type is required by boost::variant in C++11 mode"); + + struct visitor { + using result_type = const char *; + + result_type operator()(int) { return "int"; } + result_type operator()(std::string) { return "std::string"; } + result_type operator()(double) { return "double"; } + result_type operator()(std::nullptr_t) { return "std::nullptr_t"; } + }; + + // test_variant + m.def("load_variant", [](variant<int, std::string, double, std::nullptr_t> v) { + return py::detail::visit_helper<variant>::call(visitor(), v); + }); + m.def("load_variant_2pass", [](variant<double, int> v) { + return py::detail::visit_helper<variant>::call(visitor(), v); + }); + m.def("cast_variant", []() { + using V = variant<int, std::string>; + return py::make_tuple(V(5), V("Hello")); + }); +#endif + + // #528: templated constructor + // (no python tests: the test here is that this compiles) + m.def("tpl_ctor_vector", [](std::vector<TplCtorClass> &) {}); + m.def("tpl_ctor_map", [](std::unordered_map<TplCtorClass, TplCtorClass> &) {}); + m.def("tpl_ctor_set", [](std::unordered_set<TplCtorClass> &) {}); +#if defined(PYBIND11_HAS_OPTIONAL) + m.def("tpl_constr_optional", [](std::optional<TplCtorClass> &) {}); +#elif defined(PYBIND11_HAS_EXP_OPTIONAL) + m.def("tpl_constr_optional", [](std::experimental::optional<TplCtorClass> &) {}); +#endif + + // test_vec_of_reference_wrapper + // #171: Can't return STL structures containing reference wrapper + m.def("return_vec_of_reference_wrapper", [](std::reference_wrapper<UserType> p4) { + static UserType p1{1}, p2{2}, p3{3}; + return std::vector<std::reference_wrapper<UserType>> { + std::ref(p1), std::ref(p2), std::ref(p3), p4 + }; + }); + + // test_stl_pass_by_pointer + m.def("stl_pass_by_pointer", [](std::vector<int>* v) { return *v; }, "v"_a=nullptr); +} diff --git a/ext/pybind11/tests/test_stl.py b/ext/pybind11/tests/test_stl.py new file mode 100644 index 000000000..db8515e7a --- /dev/null +++ b/ext/pybind11/tests/test_stl.py @@ -0,0 +1,200 @@ +import pytest + +from pybind11_tests import stl as m +from pybind11_tests import UserType + + +def test_vector(doc): + """std::vector <-> list""" + l = m.cast_vector() + assert l == [1] + l.append(2) + assert m.load_vector(l) + assert m.load_vector(tuple(l)) + + assert m.cast_bool_vector() == [True, False] + assert m.load_bool_vector([True, False]) + + assert doc(m.cast_vector) == "cast_vector() -> List[int]" + assert doc(m.load_vector) == "load_vector(arg0: List[int]) -> bool" + + # Test regression caused by 936: pointers to stl containers weren't castable + assert m.cast_ptr_vector() == ["lvalue", "lvalue"] + + +def test_array(doc): + """std::array <-> list""" + l = m.cast_array() + assert l == [1, 2] + assert m.load_array(l) + + assert doc(m.cast_array) == "cast_array() -> List[int[2]]" + assert doc(m.load_array) == "load_array(arg0: List[int[2]]) -> bool" + + +def test_valarray(doc): + """std::valarray <-> list""" + l = m.cast_valarray() + assert l == [1, 4, 9] + assert m.load_valarray(l) + + assert doc(m.cast_valarray) == "cast_valarray() -> List[int]" + assert doc(m.load_valarray) == "load_valarray(arg0: List[int]) -> bool" + + +def test_map(doc): + """std::map <-> dict""" + d = m.cast_map() + assert d == {"key": "value"} + d["key2"] = "value2" + assert m.load_map(d) + + assert doc(m.cast_map) == "cast_map() -> Dict[str, str]" + assert doc(m.load_map) == "load_map(arg0: Dict[str, str]) -> bool" + + +def test_set(doc): + """std::set <-> set""" + s = m.cast_set() + assert s == {"key1", "key2"} + s.add("key3") + assert m.load_set(s) + + assert doc(m.cast_set) == "cast_set() -> Set[str]" + assert doc(m.load_set) == "load_set(arg0: Set[str]) -> bool" + + +def test_recursive_casting(): + """Tests that stl casters preserve lvalue/rvalue context for container values""" + assert m.cast_rv_vector() == ["rvalue", "rvalue"] + assert m.cast_lv_vector() == ["lvalue", "lvalue"] + assert m.cast_rv_array() == ["rvalue", "rvalue", "rvalue"] + assert m.cast_lv_array() == ["lvalue", "lvalue"] + assert m.cast_rv_map() == {"a": "rvalue"} + assert m.cast_lv_map() == {"a": "lvalue", "b": "lvalue"} + assert m.cast_rv_nested() == [[[{"b": "rvalue", "c": "rvalue"}], [{"a": "rvalue"}]]] + assert m.cast_lv_nested() == { + "a": [[["lvalue", "lvalue"]], [["lvalue", "lvalue"]]], + "b": [[["lvalue", "lvalue"], ["lvalue", "lvalue"]]] + } + + # Issue #853 test case: + z = m.cast_unique_ptr_vector() + assert z[0].value == 7 and z[1].value == 42 + + +def test_move_out_container(): + """Properties use the `reference_internal` policy by default. If the underlying function + returns an rvalue, the policy is automatically changed to `move` to avoid referencing + a temporary. In case the return value is a container of user-defined types, the policy + also needs to be applied to the elements, not just the container.""" + c = m.MoveOutContainer() + moved_out_list = c.move_list + assert [x.value for x in moved_out_list] == [0, 1, 2] + + +@pytest.mark.skipif(not hasattr(m, "has_optional"), reason='no <optional>') +def test_optional(): + assert m.double_or_zero(None) == 0 + assert m.double_or_zero(42) == 84 + pytest.raises(TypeError, m.double_or_zero, 'foo') + + assert m.half_or_none(0) is None + assert m.half_or_none(42) == 21 + pytest.raises(TypeError, m.half_or_none, 'foo') + + assert m.test_nullopt() == 42 + assert m.test_nullopt(None) == 42 + assert m.test_nullopt(42) == 42 + assert m.test_nullopt(43) == 43 + + assert m.test_no_assign() == 42 + assert m.test_no_assign(None) == 42 + assert m.test_no_assign(m.NoAssign(43)) == 43 + pytest.raises(TypeError, m.test_no_assign, 43) + + assert m.nodefer_none_optional(None) + + +@pytest.mark.skipif(not hasattr(m, "has_exp_optional"), reason='no <experimental/optional>') +def test_exp_optional(): + assert m.double_or_zero_exp(None) == 0 + assert m.double_or_zero_exp(42) == 84 + pytest.raises(TypeError, m.double_or_zero_exp, 'foo') + + assert m.half_or_none_exp(0) is None + assert m.half_or_none_exp(42) == 21 + pytest.raises(TypeError, m.half_or_none_exp, 'foo') + + assert m.test_nullopt_exp() == 42 + assert m.test_nullopt_exp(None) == 42 + assert m.test_nullopt_exp(42) == 42 + assert m.test_nullopt_exp(43) == 43 + + assert m.test_no_assign_exp() == 42 + assert m.test_no_assign_exp(None) == 42 + assert m.test_no_assign_exp(m.NoAssign(43)) == 43 + pytest.raises(TypeError, m.test_no_assign_exp, 43) + + +@pytest.mark.skipif(not hasattr(m, "load_variant"), reason='no <variant>') +def test_variant(doc): + assert m.load_variant(1) == "int" + assert m.load_variant("1") == "std::string" + assert m.load_variant(1.0) == "double" + assert m.load_variant(None) == "std::nullptr_t" + + assert m.load_variant_2pass(1) == "int" + assert m.load_variant_2pass(1.0) == "double" + + assert m.cast_variant() == (5, "Hello") + + assert doc(m.load_variant) == "load_variant(arg0: Union[int, str, float, None]) -> str" + + +def test_vec_of_reference_wrapper(): + """#171: Can't return reference wrappers (or STL structures containing them)""" + assert str(m.return_vec_of_reference_wrapper(UserType(4))) == \ + "[UserType(1), UserType(2), UserType(3), UserType(4)]" + + +def test_stl_pass_by_pointer(msg): + """Passing nullptr or None to an STL container pointer is not expected to work""" + with pytest.raises(TypeError) as excinfo: + m.stl_pass_by_pointer() # default value is `nullptr` + assert msg(excinfo.value) == """ + stl_pass_by_pointer(): incompatible function arguments. The following argument types are supported: + 1. (v: List[int]=None) -> List[int] + + Invoked with: + """ # noqa: E501 line too long + + with pytest.raises(TypeError) as excinfo: + m.stl_pass_by_pointer(None) + assert msg(excinfo.value) == """ + stl_pass_by_pointer(): incompatible function arguments. The following argument types are supported: + 1. (v: List[int]=None) -> List[int] + + Invoked with: None + """ # noqa: E501 line too long + + assert m.stl_pass_by_pointer([1, 2, 3]) == [1, 2, 3] + + +def test_missing_header_message(): + """Trying convert `list` to a `std::vector`, or vice versa, without including + <pybind11/stl.h> should result in a helpful suggestion in the error message""" + import pybind11_cross_module_tests as cm + + expected_message = ("Did you forget to `#include <pybind11/stl.h>`? Or <pybind11/complex.h>,\n" + "<pybind11/functional.h>, <pybind11/chrono.h>, etc. Some automatic\n" + "conversions are optional and require extra headers to be included\n" + "when compiling your pybind11 module.") + + with pytest.raises(TypeError) as excinfo: + cm.missing_header_arg([1.0, 2.0, 3.0]) + assert expected_message in str(excinfo.value) + + with pytest.raises(TypeError) as excinfo: + cm.missing_header_return() + assert expected_message in str(excinfo.value) diff --git a/ext/pybind11/tests/test_stl_binders.cpp b/ext/pybind11/tests/test_stl_binders.cpp index f636c0b55..a88b589e1 100644 --- a/ext/pybind11/tests/test_stl_binders.cpp +++ b/ext/pybind11/tests/test_stl_binders.cpp @@ -15,11 +15,6 @@ #include <deque> #include <unordered_map> -#ifdef _MSC_VER -// We get some really long type names here which causes MSVC to emit warnings -# pragma warning(disable: 4503) // warning C4503: decorated name length exceeded, name was truncated -#endif - class El { public: El() = delete; @@ -59,70 +54,54 @@ template <class Map> Map *times_ten(int n) { return m; } -struct VStruct { - bool w; - uint32_t x; - double y; - bool z; -}; - -struct VUndeclStruct { //dtype not declared for this version - bool w; - uint32_t x; - double y; - bool z; -}; +TEST_SUBMODULE(stl_binders, m) { + // test_vector_int + py::bind_vector<std::vector<unsigned int>>(m, "VectorInt", py::buffer_protocol()); -test_initializer stl_binder_vector([](py::module &m) { + // test_vector_custom py::class_<El>(m, "El") .def(py::init<int>()); - - py::bind_vector<std::vector<unsigned char>>(m, "VectorUChar", py::buffer_protocol()); - py::bind_vector<std::vector<unsigned int>>(m, "VectorInt", py::buffer_protocol()); - py::bind_vector<std::vector<bool>>(m, "VectorBool"); - py::bind_vector<std::vector<El>>(m, "VectorEl"); - py::bind_vector<std::vector<std::vector<El>>>(m, "VectorVectorEl"); - m.def("create_undeclstruct", [m] () mutable { - py::bind_vector<std::vector<VUndeclStruct>>(m, "VectorUndeclStruct", py::buffer_protocol()); - }); - - try { - py::module::import("numpy"); - } catch (...) { - return; - } - PYBIND11_NUMPY_DTYPE(VStruct, w, x, y, z); - py::class_<VStruct>(m, "VStruct").def_readwrite("x", &VStruct::x); - py::bind_vector<std::vector<VStruct>>(m, "VectorStruct", py::buffer_protocol()); - m.def("get_vectorstruct", [] {return std::vector<VStruct> {{0, 5, 3.0, 1}, {1, 30, -1e4, 0}};}); -}); - -test_initializer stl_binder_map([](py::module &m) { + // test_map_string_double py::bind_map<std::map<std::string, double>>(m, "MapStringDouble"); py::bind_map<std::unordered_map<std::string, double>>(m, "UnorderedMapStringDouble"); + // test_map_string_double_const py::bind_map<std::map<std::string, double const>>(m, "MapStringDoubleConst"); py::bind_map<std::unordered_map<std::string, double const>>(m, "UnorderedMapStringDoubleConst"); -}); - -test_initializer stl_binder_noncopyable([](py::module &m) { py::class_<E_nc>(m, "ENC") .def(py::init<int>()) .def_readwrite("value", &E_nc::value); + // test_noncopyable_containers py::bind_vector<std::vector<E_nc>>(m, "VectorENC"); m.def("get_vnc", &one_to_n<std::vector<E_nc>>, py::return_value_policy::reference); - py::bind_vector<std::deque<E_nc>>(m, "DequeENC"); m.def("get_dnc", &one_to_n<std::deque<E_nc>>, py::return_value_policy::reference); - py::bind_map<std::map<int, E_nc>>(m, "MapENC"); m.def("get_mnc", ×_ten<std::map<int, E_nc>>, py::return_value_policy::reference); - py::bind_map<std::unordered_map<int, E_nc>>(m, "UmapENC"); m.def("get_umnc", ×_ten<std::unordered_map<int, E_nc>>, py::return_value_policy::reference); -}); + + // test_vector_buffer + py::bind_vector<std::vector<unsigned char>>(m, "VectorUChar", py::buffer_protocol()); + // no dtype declared for this version: + struct VUndeclStruct { bool w; uint32_t x; double y; bool z; }; + m.def("create_undeclstruct", [m] () mutable { + py::bind_vector<std::vector<VUndeclStruct>>(m, "VectorUndeclStruct", py::buffer_protocol()); + }); + + // The rest depends on numpy: + try { py::module::import("numpy"); } + catch (...) { return; } + + // test_vector_buffer_numpy + struct VStruct { bool w; uint32_t x; double y; bool z; }; + PYBIND11_NUMPY_DTYPE(VStruct, w, x, y, z); + py::class_<VStruct>(m, "VStruct").def_readwrite("x", &VStruct::x); + py::bind_vector<std::vector<VStruct>>(m, "VectorStruct", py::buffer_protocol()); + m.def("get_vectorstruct", [] {return std::vector<VStruct> {{0, 5, 3.0, 1}, {1, 30, -1e4, 0}};}); +} diff --git a/ext/pybind11/tests/test_stl_binders.py b/ext/pybind11/tests/test_stl_binders.py index 0edf9e26e..bf1aa674c 100644 --- a/ext/pybind11/tests/test_stl_binders.py +++ b/ext/pybind11/tests/test_stl_binders.py @@ -1,107 +1,94 @@ import pytest import sys +from pybind11_tests import stl_binders as m with pytest.suppress(ImportError): import numpy as np def test_vector_int(): - from pybind11_tests import VectorInt - - v_int = VectorInt([0, 0]) + v_int = m.VectorInt([0, 0]) assert len(v_int) == 2 assert bool(v_int) is True - v_int2 = VectorInt([0, 0]) + v_int2 = m.VectorInt([0, 0]) assert v_int == v_int2 v_int2[1] = 1 assert v_int != v_int2 v_int2.append(2) - v_int2.append(3) v_int2.insert(0, 1) v_int2.insert(0, 2) v_int2.insert(0, 3) + v_int2.insert(6, 3) assert str(v_int2) == "VectorInt[3, 2, 1, 0, 1, 2, 3]" + with pytest.raises(IndexError): + v_int2.insert(8, 4) v_int.append(99) v_int2[2:-2] = v_int - assert v_int2 == VectorInt([3, 2, 0, 0, 99, 2, 3]) + assert v_int2 == m.VectorInt([3, 2, 0, 0, 99, 2, 3]) del v_int2[1:3] - assert v_int2 == VectorInt([3, 0, 99, 2, 3]) + assert v_int2 == m.VectorInt([3, 0, 99, 2, 3]) del v_int2[0] - assert v_int2 == VectorInt([0, 99, 2, 3]) + assert v_int2 == m.VectorInt([0, 99, 2, 3]) +# related to the PyPy's buffer protocol. @pytest.unsupported_on_pypy def test_vector_buffer(): - from pybind11_tests import VectorUChar, create_undeclstruct b = bytearray([1, 2, 3, 4]) - v = VectorUChar(b) + v = m.VectorUChar(b) assert v[1] == 2 v[2] = 5 - m = memoryview(v) # We expose the buffer interface + mv = memoryview(v) # We expose the buffer interface if sys.version_info.major > 2: - assert m[2] == 5 - m[2] = 6 + assert mv[2] == 5 + mv[2] = 6 else: - assert m[2] == '\x05' - m[2] = '\x06' + assert mv[2] == '\x05' + mv[2] = '\x06' assert v[2] == 6 - with pytest.raises(RuntimeError): - create_undeclstruct() # Undeclared struct contents, no buffer interface + with pytest.raises(RuntimeError) as excinfo: + m.create_undeclstruct() # Undeclared struct contents, no buffer interface + assert "NumPy type info missing for " in str(excinfo.value) +@pytest.unsupported_on_pypy @pytest.requires_numpy def test_vector_buffer_numpy(): - from pybind11_tests import VectorInt, VectorStruct, get_vectorstruct - a = np.array([1, 2, 3, 4], dtype=np.int32) with pytest.raises(TypeError): - VectorInt(a) + m.VectorInt(a) a = np.array([[1, 2, 3, 4], [5, 6, 7, 8], [9, 10, 11, 12]], dtype=np.uintc) - v = VectorInt(a[0, :]) + v = m.VectorInt(a[0, :]) assert len(v) == 4 assert v[2] == 3 - m = np.asarray(v) - m[2] = 5 + ma = np.asarray(v) + ma[2] = 5 assert v[2] == 5 - v = VectorInt(a[:, 1]) + v = m.VectorInt(a[:, 1]) assert len(v) == 3 assert v[2] == 10 - v = get_vectorstruct() + v = m.get_vectorstruct() assert v[0].x == 5 - m = np.asarray(v) - m[1]['x'] = 99 + ma = np.asarray(v) + ma[1]['x'] = 99 assert v[1].x == 99 - v = VectorStruct(np.zeros(3, dtype=np.dtype([('w', 'bool'), ('x', 'I'), - ('y', 'float64'), ('z', 'bool')], align=True))) + v = m.VectorStruct(np.zeros(3, dtype=np.dtype([('w', 'bool'), ('x', 'I'), + ('y', 'float64'), ('z', 'bool')], align=True))) assert len(v) == 3 -def test_vector_custom(): - from pybind11_tests import El, VectorEl, VectorVectorEl - - v_a = VectorEl() - v_a.append(El(1)) - v_a.append(El(2)) - assert str(v_a) == "VectorEl[El{1}, El{2}]" - - vv_a = VectorVectorEl() - vv_a.append(v_a) - vv_b = vv_a[0] - assert str(vv_b) == "VectorEl[El{1}, El{2}]" - - def test_vector_bool(): - from pybind11_tests import VectorBool + import pybind11_cross_module_tests as cm - vv_c = VectorBool() + vv_c = cm.VectorBool() for i in range(10): vv_c.append(i % 2 == 0) for i in range(10): @@ -109,18 +96,28 @@ def test_vector_bool(): assert str(vv_c) == "VectorBool[1, 0, 1, 0, 1, 0, 1, 0, 1, 0]" -def test_map_string_double(): - from pybind11_tests import MapStringDouble, UnorderedMapStringDouble +def test_vector_custom(): + v_a = m.VectorEl() + v_a.append(m.El(1)) + v_a.append(m.El(2)) + assert str(v_a) == "VectorEl[El{1}, El{2}]" - m = MapStringDouble() - m['a'] = 1 - m['b'] = 2.5 + vv_a = m.VectorVectorEl() + vv_a.append(v_a) + vv_b = vv_a[0] + assert str(vv_b) == "VectorEl[El{1}, El{2}]" - assert list(m) == ['a', 'b'] - assert list(m.items()) == [('a', 1), ('b', 2.5)] - assert str(m) == "MapStringDouble{a: 1, b: 2.5}" - um = UnorderedMapStringDouble() +def test_map_string_double(): + mm = m.MapStringDouble() + mm['a'] = 1 + mm['b'] = 2.5 + + assert list(mm) == ['a', 'b'] + assert list(mm.items()) == [('a', 1), ('b', 2.5)] + assert str(mm) == "MapStringDouble{a: 1, b: 2.5}" + + um = m.UnorderedMapStringDouble() um['ua'] = 1.1 um['ub'] = 2.6 @@ -130,35 +127,29 @@ def test_map_string_double(): def test_map_string_double_const(): - from pybind11_tests import MapStringDoubleConst, UnorderedMapStringDoubleConst - - mc = MapStringDoubleConst() + mc = m.MapStringDoubleConst() mc['a'] = 10 mc['b'] = 20.5 assert str(mc) == "MapStringDoubleConst{a: 10, b: 20.5}" - umc = UnorderedMapStringDoubleConst() + umc = m.UnorderedMapStringDoubleConst() umc['a'] = 11 umc['b'] = 21.5 str(umc) -def test_noncopyable_vector(): - from pybind11_tests import get_vnc - - vnc = get_vnc(5) +def test_noncopyable_containers(): + # std::vector + vnc = m.get_vnc(5) for i in range(0, 5): assert vnc[i].value == i + 1 for i, j in enumerate(vnc, start=1): assert j.value == i - -def test_noncopyable_deque(): - from pybind11_tests import get_dnc - - dnc = get_dnc(5) + # std::deque + dnc = m.get_dnc(5) for i in range(0, 5): assert dnc[i].value == i + 1 @@ -167,11 +158,8 @@ def test_noncopyable_deque(): assert(j.value == i) i += 1 - -def test_noncopyable_map(): - from pybind11_tests import get_mnc - - mnc = get_mnc(5) + # std::map + mnc = m.get_mnc(5) for i in range(1, 6): assert mnc[i].value == 10 * i @@ -182,11 +170,8 @@ def test_noncopyable_map(): assert vsum == 150 - -def test_noncopyable_unordered_map(): - from pybind11_tests import get_umnc - - mnc = get_umnc(5) + # std::unordered_map + mnc = m.get_umnc(5) for i in range(1, 6): assert mnc[i].value == 10 * i diff --git a/ext/pybind11/tests/test_virtual_functions.cpp b/ext/pybind11/tests/test_virtual_functions.cpp index 0f8ed2afb..953b390b8 100644 --- a/ext/pybind11/tests/test_virtual_functions.cpp +++ b/ext/pybind11/tests/test_virtual_functions.cpp @@ -145,16 +145,150 @@ class NCVirtTrampoline : public NCVirt { } }; -int runExampleVirt(ExampleVirt *ex, int value) { - return ex->run(value); -} +struct Base { + /* for some reason MSVC2015 can't compile this if the function is pure virtual */ + virtual std::string dispatch() const { return {}; }; + virtual ~Base() = default; +}; -bool runExampleVirtBool(ExampleVirt* ex) { - return ex->run_bool(); -} +struct DispatchIssue : Base { + virtual std::string dispatch() const { + PYBIND11_OVERLOAD_PURE(std::string, Base, dispatch, /* no arguments */); + } +}; + +// Forward declaration (so that we can put the main tests here; the inherited virtual approaches are +// rather long). +void initialize_inherited_virtuals(py::module &m); + +TEST_SUBMODULE(virtual_functions, m) { + // test_override + py::class_<ExampleVirt, PyExampleVirt>(m, "ExampleVirt") + .def(py::init<int>()) + /* Reference original class in function definitions */ + .def("run", &ExampleVirt::run) + .def("run_bool", &ExampleVirt::run_bool) + .def("pure_virtual", &ExampleVirt::pure_virtual); + + py::class_<NonCopyable>(m, "NonCopyable") + .def(py::init<int, int>()); + + py::class_<Movable>(m, "Movable") + .def(py::init<int, int>()); + + // test_move_support +#if !defined(__INTEL_COMPILER) + py::class_<NCVirt, NCVirtTrampoline>(m, "NCVirt") + .def(py::init<>()) + .def("get_noncopyable", &NCVirt::get_noncopyable) + .def("get_movable", &NCVirt::get_movable) + .def("print_nc", &NCVirt::print_nc) + .def("print_movable", &NCVirt::print_movable); +#endif + + m.def("runExampleVirt", [](ExampleVirt *ex, int value) { return ex->run(value); }); + m.def("runExampleVirtBool", [](ExampleVirt* ex) { return ex->run_bool(); }); + m.def("runExampleVirtVirtual", [](ExampleVirt *ex) { ex->pure_virtual(); }); + + m.def("cstats_debug", &ConstructorStats::get<ExampleVirt>); + initialize_inherited_virtuals(m); -void runExampleVirtVirtual(ExampleVirt *ex) { - ex->pure_virtual(); + // test_alias_delay_initialization1 + // don't invoke Python dispatch classes by default when instantiating C++ classes + // that were not extended on the Python side + struct A { + virtual ~A() {} + virtual void f() { py::print("A.f()"); } + }; + + struct PyA : A { + PyA() { py::print("PyA.PyA()"); } + ~PyA() { py::print("PyA.~PyA()"); } + + void f() override { + py::print("PyA.f()"); + PYBIND11_OVERLOAD(void, A, f); + } + }; + + py::class_<A, PyA>(m, "A") + .def(py::init<>()) + .def("f", &A::f); + + m.def("call_f", [](A *a) { a->f(); }); + + // test_alias_delay_initialization2 + // ... unless we explicitly request it, as in this example: + struct A2 { + virtual ~A2() {} + virtual void f() { py::print("A2.f()"); } + }; + + struct PyA2 : A2 { + PyA2() { py::print("PyA2.PyA2()"); } + ~PyA2() { py::print("PyA2.~PyA2()"); } + void f() override { + py::print("PyA2.f()"); + PYBIND11_OVERLOAD(void, A2, f); + } + }; + + py::class_<A2, PyA2>(m, "A2") + .def(py::init_alias<>()) + .def(py::init([](int) { return new PyA2(); })) + .def("f", &A2::f); + + m.def("call_f", [](A2 *a2) { a2->f(); }); + + // test_dispatch_issue + // #159: virtual function dispatch has problems with similar-named functions + py::class_<Base, DispatchIssue>(m, "DispatchIssue") + .def(py::init<>()) + .def("dispatch", &Base::dispatch); + + m.def("dispatch_issue_go", [](const Base * b) { return b->dispatch(); }); + + // test_override_ref + // #392/397: overridding reference-returning functions + class OverrideTest { + public: + struct A { std::string value = "hi"; }; + std::string v; + A a; + explicit OverrideTest(const std::string &v) : v{v} {} + virtual std::string str_value() { return v; } + virtual std::string &str_ref() { return v; } + virtual A A_value() { return a; } + virtual A &A_ref() { return a; } + virtual ~OverrideTest() = default; + }; + + class PyOverrideTest : public OverrideTest { + public: + using OverrideTest::OverrideTest; + std::string str_value() override { PYBIND11_OVERLOAD(std::string, OverrideTest, str_value); } + // Not allowed (uncommenting should hit a static_assert failure): we can't get a reference + // to a python numeric value, since we only copy values in the numeric type caster: +// std::string &str_ref() override { PYBIND11_OVERLOAD(std::string &, OverrideTest, str_ref); } + // But we can work around it like this: + private: + std::string _tmp; + std::string str_ref_helper() { PYBIND11_OVERLOAD(std::string, OverrideTest, str_ref); } + public: + std::string &str_ref() override { return _tmp = str_ref_helper(); } + + A A_value() override { PYBIND11_OVERLOAD(A, OverrideTest, A_value); } + A &A_ref() override { PYBIND11_OVERLOAD(A &, OverrideTest, A_ref); } + }; + + py::class_<OverrideTest::A>(m, "OverrideTest_A") + .def_readwrite("value", &OverrideTest::A::value); + py::class_<OverrideTest, PyOverrideTest>(m, "OverrideTest") + .def(py::init<const std::string &>()) + .def("str_value", &OverrideTest::str_value) +// .def("str_ref", &OverrideTest::str_ref) + .def("A_value", &OverrideTest::A_value) + .def("A_ref", &OverrideTest::A_ref); } @@ -179,6 +313,7 @@ public: \ return say_something(1) + " " + std::to_string(unlucky_number()); \ } A_METHODS + virtual ~A_Repeat() = default; }; class B_Repeat : public A_Repeat { #define B_METHODS \ @@ -203,7 +338,7 @@ D_METHODS }; // Base classes for templated inheritance trampolines. Identical to the repeat-everything version: -class A_Tpl { A_METHODS }; +class A_Tpl { A_METHODS; virtual ~A_Tpl() = default; }; class B_Tpl : public A_Tpl { B_METHODS }; class C_Tpl : public B_Tpl { C_METHODS }; class D_Tpl : public C_Tpl { D_METHODS }; @@ -281,6 +416,8 @@ public: void initialize_inherited_virtuals(py::module &m) { + // test_inherited_virtuals + // Method 1: repeat py::class_<A_Repeat, PyA_Repeat>(m, "A_Repeat") .def(py::init<>()) @@ -295,6 +432,7 @@ void initialize_inherited_virtuals(py::module &m) { py::class_<D_Repeat, C_Repeat, PyD_Repeat>(m, "D_Repeat") .def(py::init<>()); + // test_ // Method 2: Templated trampolines py::class_<A_Tpl, PyA_Tpl<>>(m, "A_Tpl") .def(py::init<>()) @@ -310,38 +448,3 @@ void initialize_inherited_virtuals(py::module &m) { .def(py::init<>()); }; - - -test_initializer virtual_functions([](py::module &m) { - /* Important: indicate the trampoline class PyExampleVirt using the third - argument to py::class_. The second argument with the unique pointer - is simply the default holder type used by pybind11. */ - py::class_<ExampleVirt, PyExampleVirt>(m, "ExampleVirt") - .def(py::init<int>()) - /* Reference original class in function definitions */ - .def("run", &ExampleVirt::run) - .def("run_bool", &ExampleVirt::run_bool) - .def("pure_virtual", &ExampleVirt::pure_virtual); - - py::class_<NonCopyable>(m, "NonCopyable") - .def(py::init<int, int>()); - - py::class_<Movable>(m, "Movable") - .def(py::init<int, int>()); - -#if !defined(__INTEL_COMPILER) - py::class_<NCVirt, NCVirtTrampoline>(m, "NCVirt") - .def(py::init<>()) - .def("get_noncopyable", &NCVirt::get_noncopyable) - .def("get_movable", &NCVirt::get_movable) - .def("print_nc", &NCVirt::print_nc) - .def("print_movable", &NCVirt::print_movable); -#endif - - m.def("runExampleVirt", &runExampleVirt); - m.def("runExampleVirtBool", &runExampleVirtBool); - m.def("runExampleVirtVirtual", &runExampleVirtVirtual); - - m.def("cstats_debug", &ConstructorStats::get<ExampleVirt>); - initialize_inherited_virtuals(m); -}); diff --git a/ext/pybind11/tests/test_virtual_functions.py b/ext/pybind11/tests/test_virtual_functions.py index b11c699df..b91ebfa3e 100644 --- a/ext/pybind11/tests/test_virtual_functions.py +++ b/ext/pybind11/tests/test_virtual_functions.py @@ -1,13 +1,11 @@ import pytest -import pybind11_tests + +from pybind11_tests import virtual_functions as m from pybind11_tests import ConstructorStats def test_override(capture, msg): - from pybind11_tests import (ExampleVirt, runExampleVirt, runExampleVirtVirtual, - runExampleVirtBool) - - class ExtendedExampleVirt(ExampleVirt): + class ExtendedExampleVirt(m.ExampleVirt): def __init__(self, state): super(ExtendedExampleVirt, self).__init__(state + 1) self.data = "Hello world" @@ -33,40 +31,40 @@ def test_override(capture, msg): def get_string2(self): return "override2" - ex12 = ExampleVirt(10) + ex12 = m.ExampleVirt(10) with capture: - assert runExampleVirt(ex12, 20) == 30 + assert m.runExampleVirt(ex12, 20) == 30 assert capture == """ Original implementation of ExampleVirt::run(state=10, value=20, str1=default1, str2=default2) """ # noqa: E501 line too long with pytest.raises(RuntimeError) as excinfo: - runExampleVirtVirtual(ex12) + m.runExampleVirtVirtual(ex12) assert msg(excinfo.value) == 'Tried to call pure virtual function "ExampleVirt::pure_virtual"' ex12p = ExtendedExampleVirt(10) with capture: - assert runExampleVirt(ex12p, 20) == 32 + assert m.runExampleVirt(ex12p, 20) == 32 assert capture == """ ExtendedExampleVirt::run(20), calling parent.. Original implementation of ExampleVirt::run(state=11, value=21, str1=override1, str2=default2) """ # noqa: E501 line too long with capture: - assert runExampleVirtBool(ex12p) is False + assert m.runExampleVirtBool(ex12p) is False assert capture == "ExtendedExampleVirt::run_bool()" with capture: - runExampleVirtVirtual(ex12p) + m.runExampleVirtVirtual(ex12p) assert capture == "ExtendedExampleVirt::pure_virtual(): Hello world" ex12p2 = ExtendedExampleVirt2(15) with capture: - assert runExampleVirt(ex12p2, 50) == 68 + assert m.runExampleVirt(ex12p2, 50) == 68 assert capture == """ ExtendedExampleVirt::run(50), calling parent.. Original implementation of ExampleVirt::run(state=17, value=51, str1=override1, str2=override2) """ # noqa: E501 line too long - cstats = ConstructorStats.get(ExampleVirt) + cstats = ConstructorStats.get(m.ExampleVirt) assert cstats.alive() == 3 del ex12, ex12p, ex12p2 assert cstats.alive() == 0 @@ -75,14 +73,181 @@ def test_override(capture, msg): assert cstats.move_constructions >= 0 -def test_inheriting_repeat(): - from pybind11_tests import A_Repeat, B_Repeat, C_Repeat, D_Repeat, A_Tpl, B_Tpl, C_Tpl, D_Tpl +def test_alias_delay_initialization1(capture): + """`A` only initializes its trampoline class when we inherit from it + + If we just create and use an A instance directly, the trampoline initialization is + bypassed and we only initialize an A() instead (for performance reasons). + """ + class B(m.A): + def __init__(self): + super(B, self).__init__() + + def f(self): + print("In python f()") + + # C++ version + with capture: + a = m.A() + m.call_f(a) + del a + pytest.gc_collect() + assert capture == "A.f()" + + # Python version + with capture: + b = B() + m.call_f(b) + del b + pytest.gc_collect() + assert capture == """ + PyA.PyA() + PyA.f() + In python f() + PyA.~PyA() + """ + + +def test_alias_delay_initialization2(capture): + """`A2`, unlike the above, is configured to always initialize the alias + + While the extra initialization and extra class layer has small virtual dispatch + performance penalty, it also allows us to do more things with the trampoline + class such as defining local variables and performing construction/destruction. + """ + class B2(m.A2): + def __init__(self): + super(B2, self).__init__() + + def f(self): + print("In python B2.f()") + + # No python subclass version + with capture: + a2 = m.A2() + m.call_f(a2) + del a2 + pytest.gc_collect() + a3 = m.A2(1) + m.call_f(a3) + del a3 + pytest.gc_collect() + assert capture == """ + PyA2.PyA2() + PyA2.f() + A2.f() + PyA2.~PyA2() + PyA2.PyA2() + PyA2.f() + A2.f() + PyA2.~PyA2() + """ + + # Python subclass version + with capture: + b2 = B2() + m.call_f(b2) + del b2 + pytest.gc_collect() + assert capture == """ + PyA2.PyA2() + PyA2.f() + In python B2.f() + PyA2.~PyA2() + """ + + +# PyPy: Reference count > 1 causes call with noncopyable instance +# to fail in ncv1.print_nc() +@pytest.unsupported_on_pypy +@pytest.mark.skipif(not hasattr(m, "NCVirt"), reason="NCVirt test broken on ICPC") +def test_move_support(): + class NCVirtExt(m.NCVirt): + def get_noncopyable(self, a, b): + # Constructs and returns a new instance: + nc = m.NonCopyable(a * a, b * b) + return nc + + def get_movable(self, a, b): + # Return a referenced copy + self.movable = m.Movable(a, b) + return self.movable + + class NCVirtExt2(m.NCVirt): + def get_noncopyable(self, a, b): + # Keep a reference: this is going to throw an exception + self.nc = m.NonCopyable(a, b) + return self.nc + + def get_movable(self, a, b): + # Return a new instance without storing it + return m.Movable(a, b) + + ncv1 = NCVirtExt() + assert ncv1.print_nc(2, 3) == "36" + assert ncv1.print_movable(4, 5) == "9" + ncv2 = NCVirtExt2() + assert ncv2.print_movable(7, 7) == "14" + # Don't check the exception message here because it differs under debug/non-debug mode + with pytest.raises(RuntimeError): + ncv2.print_nc(9, 9) - class AR(A_Repeat): + nc_stats = ConstructorStats.get(m.NonCopyable) + mv_stats = ConstructorStats.get(m.Movable) + assert nc_stats.alive() == 1 + assert mv_stats.alive() == 1 + del ncv1, ncv2 + assert nc_stats.alive() == 0 + assert mv_stats.alive() == 0 + assert nc_stats.values() == ['4', '9', '9', '9'] + assert mv_stats.values() == ['4', '5', '7', '7'] + assert nc_stats.copy_constructions == 0 + assert mv_stats.copy_constructions == 1 + assert nc_stats.move_constructions >= 0 + assert mv_stats.move_constructions >= 0 + + +def test_dispatch_issue(msg): + """#159: virtual function dispatch has problems with similar-named functions""" + class PyClass1(m.DispatchIssue): + def dispatch(self): + return "Yay.." + + class PyClass2(m.DispatchIssue): + def dispatch(self): + with pytest.raises(RuntimeError) as excinfo: + super(PyClass2, self).dispatch() + assert msg(excinfo.value) == 'Tried to call pure virtual function "Base::dispatch"' + + p = PyClass1() + return m.dispatch_issue_go(p) + + b = PyClass2() + assert m.dispatch_issue_go(b) == "Yay.." + + +def test_override_ref(): + """#392/397: overridding reference-returning functions""" + o = m.OverrideTest("asdf") + + # Not allowed (see associated .cpp comment) + # i = o.str_ref() + # assert o.str_ref() == "asdf" + assert o.str_value() == "asdf" + + assert o.A_value().value == "hi" + a = o.A_ref() + assert a.value == "hi" + a.value = "bye" + assert a.value == "bye" + + +def test_inherited_virtuals(): + class AR(m.A_Repeat): def unlucky_number(self): return 99 - class AT(A_Tpl): + class AT(m.A_Tpl): def unlucky_number(self): return 999 @@ -96,21 +261,21 @@ def test_inheriting_repeat(): assert obj.unlucky_number() == 999 assert obj.say_everything() == "hi 999" - for obj in [B_Repeat(), B_Tpl()]: + for obj in [m.B_Repeat(), m.B_Tpl()]: assert obj.say_something(3) == "B says hi 3 times" assert obj.unlucky_number() == 13 assert obj.lucky_number() == 7.0 assert obj.say_everything() == "B says hi 1 times 13" - for obj in [C_Repeat(), C_Tpl()]: + for obj in [m.C_Repeat(), m.C_Tpl()]: assert obj.say_something(3) == "B says hi 3 times" assert obj.unlucky_number() == 4444 assert obj.lucky_number() == 888.0 assert obj.say_everything() == "B says hi 1 times 4444" - class CR(C_Repeat): + class CR(m.C_Repeat): def lucky_number(self): - return C_Repeat.lucky_number(self) + 1.25 + return m.C_Repeat.lucky_number(self) + 1.25 obj = CR() assert obj.say_something(3) == "B says hi 3 times" @@ -118,7 +283,7 @@ def test_inheriting_repeat(): assert obj.lucky_number() == 889.25 assert obj.say_everything() == "B says hi 1 times 4444" - class CT(C_Tpl): + class CT(m.C_Tpl): pass obj = CT() @@ -147,14 +312,14 @@ def test_inheriting_repeat(): assert obj.lucky_number() == 888000.0 assert obj.say_everything() == "B says hi 1 times 4444" - class DR(D_Repeat): + class DR(m.D_Repeat): def unlucky_number(self): return 123 def lucky_number(self): return 42.0 - for obj in [D_Repeat(), D_Tpl()]: + for obj in [m.D_Repeat(), m.D_Tpl()]: assert obj.say_something(3) == "B says hi 3 times" assert obj.unlucky_number() == 4444 assert obj.lucky_number() == 888.0 @@ -166,7 +331,7 @@ def test_inheriting_repeat(): assert obj.lucky_number() == 42.0 assert obj.say_everything() == "B says hi 1 times 123" - class DT(D_Tpl): + class DT(m.D_Tpl): def say_something(self, times): return "DT says:" + (' quack' * times) @@ -189,7 +354,7 @@ def test_inheriting_repeat(): def unlucky_number(self): return -3 - class BT(B_Tpl): + class BT(m.B_Tpl): def say_something(self, times): return "BT" * times @@ -204,56 +369,3 @@ def test_inheriting_repeat(): assert obj.unlucky_number() == -7 assert obj.lucky_number() == -1.375 assert obj.say_everything() == "BT -7" - - -# PyPy: Reference count > 1 causes call with noncopyable instance -# to fail in ncv1.print_nc() -@pytest.unsupported_on_pypy -@pytest.mark.skipif(not hasattr(pybind11_tests, 'NCVirt'), - reason="NCVirt test broken on ICPC") -def test_move_support(): - from pybind11_tests import NCVirt, NonCopyable, Movable - - class NCVirtExt(NCVirt): - def get_noncopyable(self, a, b): - # Constructs and returns a new instance: - nc = NonCopyable(a * a, b * b) - return nc - - def get_movable(self, a, b): - # Return a referenced copy - self.movable = Movable(a, b) - return self.movable - - class NCVirtExt2(NCVirt): - def get_noncopyable(self, a, b): - # Keep a reference: this is going to throw an exception - self.nc = NonCopyable(a, b) - return self.nc - - def get_movable(self, a, b): - # Return a new instance without storing it - return Movable(a, b) - - ncv1 = NCVirtExt() - assert ncv1.print_nc(2, 3) == "36" - assert ncv1.print_movable(4, 5) == "9" - ncv2 = NCVirtExt2() - assert ncv2.print_movable(7, 7) == "14" - # Don't check the exception message here because it differs under debug/non-debug mode - with pytest.raises(RuntimeError): - ncv2.print_nc(9, 9) - - nc_stats = ConstructorStats.get(NonCopyable) - mv_stats = ConstructorStats.get(Movable) - assert nc_stats.alive() == 1 - assert mv_stats.alive() == 1 - del ncv1, ncv2 - assert nc_stats.alive() == 0 - assert mv_stats.alive() == 0 - assert nc_stats.values() == ['4', '9', '9', '9'] - assert mv_stats.values() == ['4', '5', '7', '7'] - assert nc_stats.copy_constructions == 0 - assert mv_stats.copy_constructions == 1 - assert nc_stats.move_constructions >= 0 - assert mv_stats.move_constructions >= 0 diff --git a/ext/pybind11/tools/FindCatch.cmake b/ext/pybind11/tools/FindCatch.cmake new file mode 100644 index 000000000..9d490c5aa --- /dev/null +++ b/ext/pybind11/tools/FindCatch.cmake @@ -0,0 +1,57 @@ +# - Find the Catch test framework or download it (single header) +# +# This is a quick module for internal use. It assumes that Catch is +# REQUIRED and that a minimum version is provided (not EXACT). If +# a suitable version isn't found locally, the single header file +# will be downloaded and placed in the build dir: PROJECT_BINARY_DIR. +# +# This code sets the following variables: +# CATCH_INCLUDE_DIR - path to catch.hpp +# CATCH_VERSION - version number + +if(NOT Catch_FIND_VERSION) + message(FATAL_ERROR "A version number must be specified.") +elseif(Catch_FIND_REQUIRED) + message(FATAL_ERROR "This module assumes Catch is not required.") +elseif(Catch_FIND_VERSION_EXACT) + message(FATAL_ERROR "Exact version numbers are not supported, only minimum.") +endif() + +# Extract the version number from catch.hpp +function(_get_catch_version) + file(STRINGS "${CATCH_INCLUDE_DIR}/catch.hpp" version_line REGEX "Catch v.*" LIMIT_COUNT 1) + if(version_line MATCHES "Catch v([0-9]+)\\.([0-9]+)\\.([0-9]+)") + set(CATCH_VERSION "${CMAKE_MATCH_1}.${CMAKE_MATCH_2}.${CMAKE_MATCH_3}" PARENT_SCOPE) + endif() +endfunction() + +# Download the single-header version of Catch +function(_download_catch version destination_dir) + message(STATUS "Downloading catch v${version}...") + set(url https://github.com/philsquared/Catch/releases/download/v${version}/catch.hpp) + file(DOWNLOAD ${url} "${destination_dir}/catch.hpp" STATUS status) + list(GET status 0 error) + if(error) + message(FATAL_ERROR "Could not download ${url}") + endif() + set(CATCH_INCLUDE_DIR "${destination_dir}" CACHE INTERNAL "") +endfunction() + +# Look for catch locally +find_path(CATCH_INCLUDE_DIR NAMES catch.hpp PATH_SUFFIXES catch) +if(CATCH_INCLUDE_DIR) + _get_catch_version() +endif() + +# Download the header if it wasn't found or if it's outdated +if(NOT CATCH_VERSION OR CATCH_VERSION VERSION_LESS ${Catch_FIND_VERSION}) + if(DOWNLOAD_CATCH) + _download_catch(${Catch_FIND_VERSION} "${PROJECT_BINARY_DIR}/catch/") + _get_catch_version() + else() + set(CATCH_FOUND FALSE) + return() + endif() +endif() + +set(CATCH_FOUND TRUE) diff --git a/ext/pybind11/tools/FindPythonLibsNew.cmake b/ext/pybind11/tools/FindPythonLibsNew.cmake index dc44a9df5..ad3ed48fa 100644 --- a/ext/pybind11/tools/FindPythonLibsNew.cmake +++ b/ext/pybind11/tools/FindPythonLibsNew.cmake @@ -50,7 +50,8 @@ # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. #============================================================================= -if(PYTHONLIBS_FOUND) +# Checking for the extension makes sure that `LibsNew` was found and not just `Libs`. +if(PYTHONLIBS_FOUND AND PYTHON_MODULE_EXTENSION) return() endif() diff --git a/ext/pybind11/tools/check-style.sh b/ext/pybind11/tools/check-style.sh index b87cb16e6..a9eeb170b 100755 --- a/ext/pybind11/tools/check-style.sh +++ b/ext/pybind11/tools/check-style.sh @@ -1,7 +1,7 @@ #!/bin/bash -# +# # Script to check include/test code for common pybind11 code style errors. -# +# # This script currently checks for # # 1. use of tabs instead of spaces @@ -11,73 +11,60 @@ # 5. Missing space between right parenthesis and brace, e.g. 'for (...){' # 6. opening brace on its own line. It should always be on the same line as the # if/while/for/do statment. -# +# # Invoke as: tools/check-style.sh # -errors=0 +check_style_errors=0 IFS=$'\n' -found= -# The mt=41 sets a red background for matched tabs: -exec 3< <(GREP_COLORS='mt=41' grep $'\t' include/ tests/*.{cpp,py,h} docs/*.rst -rn --color=always) -while read -u 3 f; do - if [ -z "$found" ]; then - echo -e '\e[31m\e[01mError: found tabs instead of spaces in the following files:\e[0m' - found=1 - errors=1 - fi - - echo " $f" -done - -found= -# The mt=41 sets a red background for matched MS-DOS CRLF line endings -exec 3< <(GREP_COLORS='mt=41' grep -IUlr $'\r' include/ tests/*.{cpp,py,h} docs/*.rst --color=always) -while read -u 3 f; do - if [ -z "$found" ]; then - echo -e '\e[31m\e[01mError: found CRLF characters in the following files:\e[0m' - found=1 - errors=1 - fi - - echo " $f" -done -found= -# The mt=41 sets a red background for matched trailing spaces -exec 3< <(GREP_COLORS='mt=41' grep '\s\+$' include/ tests/*.{cpp,py,h} docs/*.rst -rn --color=always) -while read -u 3 f; do - if [ -z "$found" ]; then - echo -e '\e[31m\e[01mError: found trailing spaces in the following files:\e[0m' - found=1 - errors=1 - fi +found="$( GREP_COLORS='mt=41' GREP_COLOR='41' grep $'\t' include tests/*.{cpp,py,h} docs/*.rst -rn --color=always )" +if [ -n "$found" ]; then + # The mt=41 sets a red background for matched tabs: + echo -e '\033[31;01mError: found tab characters in the following files:\033[0m' + check_style_errors=1 + echo "$found" | sed -e 's/^/ /' +fi - echo " $f" -done -found= -exec 3< <(grep '\<\(if\|for\|while\|catch\)(\|){' include/ tests/*.{cpp,py,h} -rn --color=always) -while read -u 3 line; do - if [ -z "$found" ]; then - echo -e '\e[31m\e[01mError: found the following coding style problems:\e[0m' - found=1 - errors=1 - fi +found="$( grep -IUlr $'\r' include tests/*.{cpp,py,h} docs/*.rst --color=always )" +if [ -n "$found" ]; then + echo -e '\033[31;01mError: found CRLF characters in the following files:\033[0m' + check_style_errors=1 + echo "$found" | sed -e 's/^/ /' +fi - echo " $line" -done +found="$(GREP_COLORS='mt=41' GREP_COLOR='41' grep '[[:blank:]]\+$' include tests/*.{cpp,py,h} docs/*.rst -rn --color=always )" +if [ -n "$found" ]; then + # The mt=41 sets a red background for matched trailing spaces + echo -e '\033[31;01mError: found trailing spaces in the following files:\033[0m' + check_style_errors=1 + echo "$found" | sed -e 's/^/ /' +fi -found= -exec 3< <(GREP_COLORS='mt=41' grep '^\s*{\s*$' include/ docs/*.rst -rn --color=always) -while read -u 3 f; do - if [ -z "$found" ]; then - echo -e '\e[31m\e[01mError: braces should occur on the same line as the if/while/.. statement. Found issues in the following files: \e[0m' - found=1 - errors=1 - fi +found="$(grep '\<\(if\|for\|while\|catch\)(\|){' include tests/*.{cpp,h} -rn --color=always)" +if [ -n "$found" ]; then + echo -e '\033[31;01mError: found the following coding style problems:\033[0m' + check_style_errors=1 + echo "$found" | sed -e 's/^/ /' +fi - echo " $f" -done +found="$(awk ' +function prefix(filename, lineno) { + return " \033[35m" filename "\033[36m:\033[32m" lineno "\033[36m:\033[0m" +} +function mark(pattern, string) { sub(pattern, "\033[01;31m&\033[0m", string); return string } +last && /^\s*{/ { + print prefix(FILENAME, FNR-1) mark("\\)\\s*$", last) + print prefix(FILENAME, FNR) mark("^\\s*{", $0) + last="" +} +{ last = /(if|for|while|catch|switch)\s*\(.*\)\s*$/ ? $0 : "" } +' $(find include -type f) tests/*.{cpp,h} docs/*.rst)" +if [ -n "$found" ]; then + check_style_errors=1 + echo -e '\033[31;01mError: braces should occur on the same line as the if/while/.. statement. Found issues in the following files:\033[0m' + echo "$found" +fi -exit $errors +exit $check_style_errors diff --git a/ext/pybind11/tools/mkdoc.py b/ext/pybind11/tools/mkdoc.py index 400fb05da..1fd8cceed 100644 --- a/ext/pybind11/tools/mkdoc.py +++ b/ext/pybind11/tools/mkdoc.py @@ -56,26 +56,19 @@ CPP_OPERATORS = OrderedDict( job_count = cpu_count() job_semaphore = Semaphore(job_count) -registered_names = dict() - +output = [] def d(s): return s.decode('utf8') def sanitize_name(name): - global registered_names name = re.sub(r'type-parameter-0-([0-9]+)', r'T\1', name) for k, v in CPP_OPERATORS.items(): name = name.replace('operator%s' % k, 'operator_%s' % v) name = re.sub('<.*>', '', name) name = ''.join([ch if ch.isalnum() else '_' for ch in name]) name = re.sub('_$', '', re.sub('_+', '_', name)) - if name in registered_names: - registered_names[name] += 1 - name += '_' + str(registered_names[name]) - else: - registered_names[name] = 1 return '__doc_' + name @@ -189,8 +182,7 @@ def process_comment(comment): return result.rstrip().lstrip('\n') -def extract(filename, node, prefix, output): - num_extracted = 0 +def extract(filename, node, prefix): if not (node.location.file is None or os.path.samefile(d(node.location.file.name), filename)): return 0 @@ -201,9 +193,7 @@ def extract(filename, node, prefix, output): sub_prefix += '_' sub_prefix += d(node.spelling) for i in node.get_children(): - num_extracted += extract(filename, i, sub_prefix, output) - if num_extracted == 0: - return 0 + extract(filename, i, sub_prefix) if node.kind in PRINT_LIST: comment = d(node.raw_comment) if node.raw_comment is not None else '' comment = process_comment(comment) @@ -212,18 +202,15 @@ def extract(filename, node, prefix, output): sub_prefix += '_' if len(node.spelling) > 0: name = sanitize_name(sub_prefix + d(node.spelling)) - output.append('\nstatic const char *%s =%sR"doc(%s)doc";' % - (name, '\n' if '\n' in comment else ' ', comment)) - num_extracted += 1 - return num_extracted + global output + output.append((name, filename, comment)) class ExtractionThread(Thread): - def __init__(self, filename, parameters, output): + def __init__(self, filename, parameters): Thread.__init__(self) self.filename = filename self.parameters = parameters - self.output = output job_semaphore.acquire() def run(self): @@ -232,7 +219,7 @@ class ExtractionThread(Thread): index = cindex.Index( cindex.conf.lib.clang_createIndex(False, True)) tu = index.parse(self.filename, self.parameters) - extract(self.filename, tu.cursor, '', self.output) + extract(self.filename, tu.cursor, '') finally: job_semaphore.release() @@ -289,18 +276,26 @@ if __name__ == '__main__': #endif ''') - output = [] + output.clear() for filename in filenames: - thr = ExtractionThread(filename, parameters, output) + thr = ExtractionThread(filename, parameters) thr.start() print('Waiting for jobs to finish ..', file=sys.stderr) for i in range(job_count): job_semaphore.acquire() - output.sort() - for l in output: - print(l) + name_ctr = 1 + name_prev = None + for name, _, comment in list(sorted(output, key=lambda x: (x[0], x[1]))): + if name == name_prev: + name_ctr += 1 + name = name + "_%i" % name_ctr + else: + name_prev = name + name_ctr = 1 + print('\nstatic const char *%s =%sR"doc(%s)doc";' % + (name, '\n' if '\n' in comment else ' ', comment)) print(''' #if defined(__GNUG__) diff --git a/ext/pybind11/tools/pybind11Config.cmake.in b/ext/pybind11/tools/pybind11Config.cmake.in index ae6d2daee..3dd1b2c1a 100644 --- a/ext/pybind11/tools/pybind11Config.cmake.in +++ b/ext/pybind11/tools/pybind11Config.cmake.in @@ -21,18 +21,27 @@ # Exported targets:: # # If pybind11 is found, this module defines the following :prop_tgt:`IMPORTED` -# target. Python headers, libraries (as needed by platform), and C++ standard +# interface library targets:: +# +# pybind11::module - for extension modules +# pybind11::embed - for embedding the Python interpreter +# +# Python headers, libraries (as needed by platform), and the C++ standard # are attached to the target. Set PythonLibsNew variables to influence # python detection and PYBIND11_CPP_STANDARD (-std=c++11 or -std=c++14) to # influence standard setting. :: # -# pybind11::module - the main pybind11 interface library for extension modules (i.e., headers) -# # find_package(pybind11 CONFIG REQUIRED) -# message(STATUS "Found pybind11: ${pybind11_INCLUDE_DIR} (found version ${pybind11_VERSION} & Py${PYTHON_VERSION_STRING})") +# message(STATUS "Found pybind11 v${pybind11_VERSION}: ${pybind11_INCLUDE_DIRS}") +# +# # Create an extension module # add_library(mylib MODULE main.cpp) # target_link_libraries(mylib pybind11::module) # +# # Or embed the Python interpreter into an executable +# add_executable(myexe main.cpp) +# target_link_libraries(myexe pybind11::embed) +# # Suggested usage:: # # find_package with version info is not recommended except for release versions. :: @@ -71,21 +80,20 @@ if(NOT (CMAKE_VERSION VERSION_LESS 3.0)) # Don't include targets if this file is being picked up by another # project which has already built this as a subproject #----------------------------------------------------------------------------- -if(NOT TARGET ${PN}::module) +if(NOT TARGET ${PN}::pybind11) include("${CMAKE_CURRENT_LIST_DIR}/${PN}Targets.cmake") find_package(PythonLibsNew ${PYBIND11_PYTHON_VERSION} MODULE REQUIRED) - set_property(TARGET ${PN}::module APPEND PROPERTY INTERFACE_INCLUDE_DIRECTORIES ${PYTHON_INCLUDE_DIRS}) + set_property(TARGET ${PN}::pybind11 APPEND PROPERTY INTERFACE_INCLUDE_DIRECTORIES ${PYTHON_INCLUDE_DIRS}) + set_property(TARGET ${PN}::embed APPEND PROPERTY INTERFACE_LINK_LIBRARIES ${PYTHON_LIBRARIES}) if(WIN32 OR CYGWIN) set_property(TARGET ${PN}::module APPEND PROPERTY INTERFACE_LINK_LIBRARIES ${PYTHON_LIBRARIES}) endif() - select_cxx_standard() - set_property(TARGET ${PN}::module APPEND PROPERTY INTERFACE_COMPILE_OPTIONS "${PYBIND11_CPP_STANDARD}") + set_property(TARGET ${PN}::pybind11 APPEND PROPERTY INTERFACE_COMPILE_OPTIONS "${PYBIND11_CPP_STANDARD}") - get_property(_iid TARGET ${PN}::module PROPERTY INTERFACE_INCLUDE_DIRECTORIES) + get_property(_iid TARGET ${PN}::pybind11 PROPERTY INTERFACE_INCLUDE_DIRECTORIES) get_property(_ill TARGET ${PN}::module PROPERTY INTERFACE_LINK_LIBRARIES) - get_property(_ico TARGET ${PN}::module PROPERTY INTERFACE_COMPILE_OPTIONS) set(${PN}_INCLUDE_DIRS ${_iid}) set(${PN}_LIBRARIES ${_ico} ${_ill}) endif() diff --git a/ext/pybind11/tools/pybind11Tools.cmake b/ext/pybind11/tools/pybind11Tools.cmake index 3fbffeeff..a7c471a07 100644 --- a/ext/pybind11/tools/pybind11Tools.cmake +++ b/ext/pybind11/tools/pybind11Tools.cmake @@ -18,23 +18,27 @@ find_package(PythonLibsNew ${PYBIND11_PYTHON_VERSION} REQUIRED) include(CheckCXXCompilerFlag) include(CMakeParseArguments) -function(select_cxx_standard) - if(NOT MSVC AND NOT PYBIND11_CPP_STANDARD) +if(NOT PYBIND11_CPP_STANDARD AND NOT CMAKE_CXX_STANDARD) + if(NOT MSVC) check_cxx_compiler_flag("-std=c++14" HAS_CPP14_FLAG) - check_cxx_compiler_flag("-std=c++11" HAS_CPP11_FLAG) if (HAS_CPP14_FLAG) set(PYBIND11_CPP_STANDARD -std=c++14) - elseif (HAS_CPP11_FLAG) - set(PYBIND11_CPP_STANDARD -std=c++11) else() - message(FATAL_ERROR "Unsupported compiler -- pybind11 requires C++11 support!") + check_cxx_compiler_flag("-std=c++11" HAS_CPP11_FLAG) + if (HAS_CPP11_FLAG) + set(PYBIND11_CPP_STANDARD -std=c++11) + else() + message(FATAL_ERROR "Unsupported compiler -- pybind11 requires C++11 support!") + endif() endif() - - set(PYBIND11_CPP_STANDARD ${PYBIND11_CPP_STANDARD} CACHE STRING - "C++ standard flag, e.g. -std=c++11 or -std=c++14. Defaults to latest available." FORCE) + elseif(MSVC) + set(PYBIND11_CPP_STANDARD /std:c++14) endif() -endfunction() + + set(PYBIND11_CPP_STANDARD ${PYBIND11_CPP_STANDARD} CACHE STRING + "C++ standard flag, e.g. -std=c++11, -std=c++14, /std:c++14. Defaults to C++14 mode." FORCE) +endif() # Checks whether the given CXX/linker flags can compile and link a cxx file. cxxflags and # linkerflags are lists of flags to use. The result variable is a unique variable name for each set @@ -135,6 +139,13 @@ function(pybind11_add_module target_name) set_target_properties(${target_name} PROPERTIES PREFIX "${PYTHON_MODULE_PREFIX}") set_target_properties(${target_name} PROPERTIES SUFFIX "${PYTHON_MODULE_EXTENSION}") + # -fvisibility=hidden is required to allow multiple modules compiled against + # different pybind versions to work properly, and for some features (e.g. + # py::module_local). We force it on everything inside the `pybind11` + # namespace; also turning it on for a pybind module compilation here avoids + # potential warnings or issues from having mixed hidden/non-hidden types. + set_target_properties(${target_name} PROPERTIES CXX_VISIBILITY_PRESET "hidden") + if(WIN32 OR CYGWIN) # Link against the Python shared library on Windows target_link_libraries(${target_name} PRIVATE ${PYTHON_LIBRARIES}) @@ -161,11 +172,8 @@ function(pybind11_add_module target_name) endif() endif() - select_cxx_standard() - if(NOT MSVC) - # Make sure C++11/14 are enabled - target_compile_options(${target_name} PUBLIC ${PYBIND11_CPP_STANDARD}) - endif() + # Make sure C++11/14 are enabled + target_compile_options(${target_name} PUBLIC ${PYBIND11_CPP_STANDARD}) if(ARG_NO_EXTRAS) return() @@ -174,9 +182,6 @@ function(pybind11_add_module target_name) _pybind11_add_lto_flags(${target_name} ${ARG_THIN_LTO}) if (NOT MSVC AND NOT ${CMAKE_BUILD_TYPE} MATCHES Debug) - # Set the default symbol visibility to hidden (very important to obtain small binaries) - target_compile_options(${target_name} PRIVATE "-fvisibility=hidden") - # Strip unnecessary sections of the binary on Linux/Mac OS if(CMAKE_STRIP) if(APPLE) |