pybind11/tests/test_multiple_inheritance.cpp

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2016-09-11 11:00:40 +00:00
/*
tests/test_multiple_inheritance.cpp -- multiple inheritance,
implicit MI casts
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 Base1 {
Base1(int i) : i(i) { }
int foo() { return i; }
int i;
};
struct Base2 {
Base2(int i) : i(i) { }
int bar() { return i; }
int i;
};
struct Base12 : Base1, Base2 {
Base12(int i, int j) : Base1(i), Base2(j) { }
};
struct MIType : Base12 {
MIType(int i, int j) : Base12(i, j) { }
};
test_initializer multiple_inheritance([](py::module &m) {
py::class_<Base1>(m, "Base1")
.def(py::init<int>())
.def("foo", &Base1::foo);
py::class_<Base2>(m, "Base2")
.def(py::init<int>())
.def("bar", &Base2::bar);
py::class_<Base12, Base1, Base2>(m, "Base12");
py::class_<MIType, Base12>(m, "MIType")
.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) {
py::class_<Base1a, std::shared_ptr<Base1a>>(m, "Base1a")
.def(py::init<int>())
.def("foo", &Base1a::foo);
py::class_<Base2a, std::shared_ptr<Base2a>>(m, "Base2a")
.def(py::init<int>())
.def("bar", &Base2a::bar);
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(); });
});