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/*
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<>());
});
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