342 lines
12 KiB
C++
342 lines
12 KiB
C++
/*
|
|
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 "constructor_stats.h"
|
|
#include "pybind11_tests.h"
|
|
|
|
namespace {
|
|
|
|
// 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 {
|
|
explicit BaseN(int i) : i(i) {}
|
|
int i;
|
|
};
|
|
|
|
// test_mi_static_properties
|
|
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 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_multiple_inheritance_virtbase
|
|
struct Base1a {
|
|
explicit Base1a(int i) : i(i) {}
|
|
int foo() const { return i; }
|
|
int i;
|
|
};
|
|
struct Base2a {
|
|
explicit Base2a(int i) : i(i) {}
|
|
int bar() const { return i; }
|
|
int i;
|
|
};
|
|
struct Base12a : Base1a, Base2a {
|
|
Base12a(int i, int j) : Base1a(i), Base2a(j) {}
|
|
};
|
|
|
|
// test_mi_unaligned_base
|
|
// test_mi_base_return
|
|
struct I801B1 {
|
|
int a = 1;
|
|
I801B1() = default;
|
|
I801B1(const I801B1 &) = default;
|
|
virtual ~I801B1() = default;
|
|
};
|
|
struct I801B2 {
|
|
int b = 2;
|
|
I801B2() = default;
|
|
I801B2(const I801B2 &) = default;
|
|
virtual ~I801B2() = default;
|
|
};
|
|
struct I801C : I801B1, I801B2 {};
|
|
struct I801D : I801C {}; // Indirect MI
|
|
|
|
} // namespace
|
|
|
|
TEST_SUBMODULE(multiple_inheritance, m) {
|
|
// Please do not interleave `struct` and `class` definitions with bindings code,
|
|
// but implement `struct`s and `class`es in the anonymous namespace above.
|
|
// This helps keeping the smart_holder branch in sync with master.
|
|
|
|
// test_multiple_inheritance_mix1
|
|
// test_multiple_inheritance_mix2
|
|
struct Base1 {
|
|
explicit Base1(int i) : i(i) {}
|
|
int foo() const { return i; }
|
|
int i;
|
|
};
|
|
py::class_<Base1> b1(m, "Base1");
|
|
b1.def(py::init<int>()).def("foo", &Base1::foo);
|
|
|
|
struct Base2 {
|
|
explicit Base2(int i) : i(i) {}
|
|
int bar() const { return i; }
|
|
int i;
|
|
};
|
|
py::class_<Base2> b2(m, "Base2");
|
|
b2.def(py::init<int>()).def("bar", &Base2::bar);
|
|
|
|
// 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).
|
|
// struct Base12v2 : Base1, Base2 {
|
|
// Base12v2(int i, int j) : Base1(i), Base2(j) { }
|
|
// };
|
|
// py::class_<Base12v2>(m, "Base12v2", b1, b2)
|
|
// .def(py::init<int, int>());
|
|
|
|
// 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.
|
|
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", [](const std::shared_ptr<Base2a> &b) { return b->bar(); });
|
|
|
|
// test_mi_unaligned_base
|
|
// test_mi_base_return
|
|
// Issue #801: invalid casting to derived type with MI bases
|
|
// 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);
|
|
|
|
py::class_<WithStatic1>(m, "WithStatic1")
|
|
.def(py::init<>())
|
|
.def_static("static_func1", &WithStatic1::static_func1)
|
|
.def_readwrite_static("static_value1", &WithStatic1::static_value1);
|
|
|
|
py::class_<WithStatic2>(m, "WithStatic2")
|
|
.def(py::init<>())
|
|
.def_static("static_func2", &WithStatic2::static_func2)
|
|
.def_readwrite_static("static_value2", &WithStatic2::static_value2);
|
|
|
|
py::class_<VanillaStaticMix1, Vanilla, WithStatic1, WithStatic2>(m, "VanillaStaticMix1")
|
|
.def(py::init<>())
|
|
.def_static("static_func", &VanillaStaticMix1::static_func)
|
|
.def_readwrite_static("static_value", &VanillaStaticMix1::static_value);
|
|
|
|
py::class_<VanillaStaticMix2, WithStatic1, Vanilla, WithStatic2>(m, "VanillaStaticMix2")
|
|
.def(py::init<>())
|
|
.def_static("static_func", &VanillaStaticMix2::static_func)
|
|
.def_readwrite_static("static_value", &VanillaStaticMix2::static_value);
|
|
|
|
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<>());
|
|
|
|
// 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;
|
|
B() = default;
|
|
B(const B &) = default;
|
|
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<>());
|
|
|
|
// test_pr3635_diamond_*
|
|
// - functions are get_{base}_{var}, return {var}
|
|
struct MVB {
|
|
MVB() = default;
|
|
MVB(const MVB &) = default;
|
|
virtual ~MVB() = default;
|
|
|
|
int b = 1;
|
|
int get_b_b() const { return b; }
|
|
};
|
|
struct MVC : virtual MVB {
|
|
int c = 2;
|
|
int get_c_b() const { return b; }
|
|
int get_c_c() const { return c; }
|
|
};
|
|
struct MVD0 : virtual MVC {
|
|
int d0 = 3;
|
|
int get_d0_b() const { return b; }
|
|
int get_d0_c() const { return c; }
|
|
int get_d0_d0() const { return d0; }
|
|
};
|
|
struct MVD1 : virtual MVC {
|
|
int d1 = 4;
|
|
int get_d1_b() const { return b; }
|
|
int get_d1_c() const { return c; }
|
|
int get_d1_d1() const { return d1; }
|
|
};
|
|
struct MVE : virtual MVD0, virtual MVD1 {
|
|
int e = 5;
|
|
int get_e_b() const { return b; }
|
|
int get_e_c() const { return c; }
|
|
int get_e_d0() const { return d0; }
|
|
int get_e_d1() const { return d1; }
|
|
int get_e_e() const { return e; }
|
|
};
|
|
struct MVF : virtual MVE {
|
|
int f = 6;
|
|
int get_f_b() const { return b; }
|
|
int get_f_c() const { return c; }
|
|
int get_f_d0() const { return d0; }
|
|
int get_f_d1() const { return d1; }
|
|
int get_f_e() const { return e; }
|
|
int get_f_f() const { return f; }
|
|
};
|
|
py::class_<MVB>(m, "MVB")
|
|
.def(py::init<>())
|
|
.def("get_b_b", &MVB::get_b_b)
|
|
.def_readwrite("b", &MVB::b);
|
|
py::class_<MVC, MVB>(m, "MVC")
|
|
.def(py::init<>())
|
|
.def("get_c_b", &MVC::get_c_b)
|
|
.def("get_c_c", &MVC::get_c_c)
|
|
.def_readwrite("c", &MVC::c);
|
|
py::class_<MVD0, MVC>(m, "MVD0")
|
|
.def(py::init<>())
|
|
.def("get_d0_b", &MVD0::get_d0_b)
|
|
.def("get_d0_c", &MVD0::get_d0_c)
|
|
.def("get_d0_d0", &MVD0::get_d0_d0)
|
|
.def_readwrite("d0", &MVD0::d0);
|
|
py::class_<MVD1, MVC>(m, "MVD1")
|
|
.def(py::init<>())
|
|
.def("get_d1_b", &MVD1::get_d1_b)
|
|
.def("get_d1_c", &MVD1::get_d1_c)
|
|
.def("get_d1_d1", &MVD1::get_d1_d1)
|
|
.def_readwrite("d1", &MVD1::d1);
|
|
py::class_<MVE, MVD0, MVD1>(m, "MVE")
|
|
.def(py::init<>())
|
|
.def("get_e_b", &MVE::get_e_b)
|
|
.def("get_e_c", &MVE::get_e_c)
|
|
.def("get_e_d0", &MVE::get_e_d0)
|
|
.def("get_e_d1", &MVE::get_e_d1)
|
|
.def("get_e_e", &MVE::get_e_e)
|
|
.def_readwrite("e", &MVE::e);
|
|
py::class_<MVF, MVE>(m, "MVF")
|
|
.def(py::init<>())
|
|
.def("get_f_b", &MVF::get_f_b)
|
|
.def("get_f_c", &MVF::get_f_c)
|
|
.def("get_f_d0", &MVF::get_f_d0)
|
|
.def("get_f_d1", &MVF::get_f_d1)
|
|
.def("get_f_e", &MVF::get_f_e)
|
|
.def("get_f_f", &MVF::get_f_f)
|
|
.def_readwrite("f", &MVF::f);
|
|
}
|