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Diffstat (limited to 'ext/pybind11/tests/test_python_types.cpp')
-rw-r--r-- | ext/pybind11/tests/test_python_types.cpp | 495 |
1 files changed, 0 insertions, 495 deletions
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 π) contains a null byte - char32_t a32 = 0x61 /*a*/, z32 = 0x7a /*z*/, ib32 = 0x203d /*β½*/, cake32 = 0x1f382 /*π*/, mathbfA32 = 0x1d400 /*π*/; - 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); // βΈ - if (sizeof(wchar_t) == 2) { wstr.push_back(mathbfA16_1); wstr.push_back(mathbfA16_2); } // π, utf16 - else { wstr.push_back((wchar_t) mathbfA32); } // π, utf32 - wstr.push_back(0x7a); // z - - m.def("good_utf8_string", []() { return std::string(u8"Say utf8\u203d \U0001f382 \U0001d400"); }); // Say utf8β½ π π - m.def("good_utf16_string", [=]() { return std::u16string({ b16, ib16, cake16_1, cake16_2, mathbfA16_1, mathbfA16_2, z16 }); }); // bβ½ππz - m.def("good_utf32_string", [=]() { return std::u32string({ a32, mathbfA32, cake32, ib32, z32 }); }); // aππβ½z - m.def("good_wchar_string", [=]() { return wstr; }); // aβ½πz - 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 |