diff options
author | gatecat <gatecat@ds0.me> | 2022-09-14 09:28:47 +0200 |
---|---|---|
committer | gatecat <gatecat@ds0.me> | 2022-09-14 09:28:47 +0200 |
commit | a72f898ff4c4237424c468044a6db9d6953b541e (patch) | |
tree | 1c4a543f661dd1b281aecf4660388491702fa8d8 /3rdparty/pybind11/tests/test_factory_constructors.cpp | |
parent | f1349e114f3a16ccd002e8513339e18f5be4d31b (diff) | |
download | nextpnr-a72f898ff4c4237424c468044a6db9d6953b541e.tar.gz nextpnr-a72f898ff4c4237424c468044a6db9d6953b541e.tar.bz2 nextpnr-a72f898ff4c4237424c468044a6db9d6953b541e.zip |
3rdparty: Bump vendored pybind11 version for py3.11 support
Signed-off-by: gatecat <gatecat@ds0.me>
Diffstat (limited to '3rdparty/pybind11/tests/test_factory_constructors.cpp')
-rw-r--r-- | 3rdparty/pybind11/tests/test_factory_constructors.cpp | 323 |
1 files changed, 205 insertions, 118 deletions
diff --git a/3rdparty/pybind11/tests/test_factory_constructors.cpp b/3rdparty/pybind11/tests/test_factory_constructors.cpp index f42d1f29..a387cd2e 100644 --- a/3rdparty/pybind11/tests/test_factory_constructors.cpp +++ b/3rdparty/pybind11/tests/test_factory_constructors.cpp @@ -8,35 +8,45 @@ BSD-style license that can be found in the LICENSE file. */ -#include "pybind11_tests.h" #include "constructor_stats.h" +#include "pybind11_tests.h" + #include <cmath> #include <new> +#include <utility> // Classes for testing python construction via C++ factory function: // Not publicly 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); } + explicit TestFactory1(int v) : value(std::to_string(v)) { print_created(this, value); } + explicit TestFactory1(std::string v) : value(std::move(v)) { print_created(this, value); } + +public: + std::string 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); } + explicit TestFactory2(int v) : value(std::to_string(v)) { print_created(this, value); } + explicit 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; } + TestFactory2(TestFactory2 &&m) noexcept : value{std::move(m.value)} { + print_move_created(this); + } + TestFactory2 &operator=(TestFactory2 &&m) noexcept { + value = std::move(m.value); + print_move_assigned(this); + return *this; + } std::string value; ~TestFactory2() { print_destroyed(this); } }; @@ -45,11 +55,18 @@ 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); } + explicit 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; } + explicit TestFactory3(std::string v) : value(std::move(v)) { print_created(this, value); } + TestFactory3(TestFactory3 &&m) noexcept : value{std::move(m.value)} { + print_move_created(this); + } + TestFactory3 &operator=(TestFactory3 &&m) noexcept { + value = std::move(m.value); + print_move_assigned(this); + return *this; + } std::string value; virtual ~TestFactory3() { print_destroyed(this); } }; @@ -57,13 +74,13 @@ public: class TestFactory4 : public TestFactory3 { public: TestFactory4() : TestFactory3() { print_default_created(this); } - TestFactory4(int v) : TestFactory3(v) { print_created(this, v); } + explicit TestFactory4(int v) : TestFactory3(v) { print_created(this, v); } ~TestFactory4() override { print_destroyed(this); } }; // Another class for an invalid downcast test class TestFactory5 : public TestFactory3 { public: - TestFactory5(int i) : TestFactory3(i) { print_created(this, i); } + explicit TestFactory5(int i) : TestFactory3(i) { print_created(this, i); } ~TestFactory5() override { print_destroyed(this); } }; @@ -71,23 +88,45 @@ 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; } + explicit TestFactory6(int i) : value{i} { print_created(this, i); } + TestFactory6(TestFactory6 &&f) noexcept { + print_move_created(this); + // NOLINTNEXTLINE(cppcoreguidelines-prefer-member-initializer) + value = f.value; + // NOLINTNEXTLINE(cppcoreguidelines-prefer-member-initializer) + alias = f.alias; + } + TestFactory6(const TestFactory6 &f) { + print_copy_created(this); + // NOLINTNEXTLINE(cppcoreguidelines-prefer-member-initializer) + value = f.value; + // NOLINTNEXTLINE(cppcoreguidelines-prefer-member-initializer) + alias = f.alias; + } virtual ~TestFactory6() { print_destroyed(this); } virtual int get() { return value; } - bool has_alias() { return alias; } + bool has_alias() const { 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); } + explicit PyTF6(TestFactory6 &&base) : TestFactory6(std::move(base)) { + alias = true; + print_created(this, "move", value); + } + explicit PyTF6(int i) : TestFactory6(i) { + alias = true; + print_created(this, i); + } + PyTF6(PyTF6 &&f) noexcept : 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); } + explicit PyTF6(std::string s) : TestFactory6((int) s.size()) { + alias = true; + print_created(this, s); + } ~PyTF6() override { print_destroyed(this); } int get() override { PYBIND11_OVERRIDE(int, TestFactory6, get, /*no args*/); } }; @@ -96,56 +135,80 @@ 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; } + explicit TestFactory7(int i) : value{i} { print_created(this, i); } + TestFactory7(TestFactory7 &&f) noexcept { + print_move_created(this); + // NOLINTNEXTLINE(cppcoreguidelines-prefer-member-initializer) + value = f.value; + // NOLINTNEXTLINE(cppcoreguidelines-prefer-member-initializer) + alias = f.alias; + } + TestFactory7(const TestFactory7 &f) { + print_copy_created(this); + // NOLINTNEXTLINE(cppcoreguidelines-prefer-member-initializer) + value = f.value; + // NOLINTNEXTLINE(cppcoreguidelines-prefer-member-initializer) + alias = f.alias; + } virtual ~TestFactory7() { print_destroyed(this); } virtual int get() { return value; } - bool has_alias() { return alias; } + bool has_alias() const { 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); } + explicit PyTF7(int i) : TestFactory7(i) { + // NOLINTNEXTLINE(cppcoreguidelines-prefer-member-initializer) + alias = true; + print_created(this, i); + } + PyTF7(PyTF7 &&f) noexcept : TestFactory7(std::move(f)) { print_move_created(this); } PyTF7(const PyTF7 &f) : TestFactory7(f) { print_copy_created(this); } ~PyTF7() override { print_destroyed(this); } int get() override { PYBIND11_OVERRIDE(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)); } + 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); } + static TestFactory1 *construct1_string(std::string a) { + return new TestFactory1(std::move(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)); } + 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); } + static TestFactory2 construct2(std::string a) { return TestFactory2(std::move(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)); } + 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<>()); \ +#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); @@ -168,40 +231,50 @@ TEST_SUBMODULE(factory_constructors, m) { .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) - ; + .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([](unique_ptr_tag, std::string v) { + return TestFactoryHelper::construct2(std::move(v)); + })) .def(py::init([](move_tag) { return TestFactoryHelper::construct2(); })) - .def_readwrite("value", &TestFactory2::value) - ; + .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);}; + 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") + py::class_<TestFactory3, std::shared_ptr<TestFactory3>> pyTestFactory3(m, "TestFactory3"); + pyTestFactory3 .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 - + .def(py::init([](shared_ptr_tag) { return TestFactoryHelper::construct3(); })); + ignoreOldStyleInitWarnings([&pyTestFactory3]() { + pyTestFactory3.def("__init__", [](TestFactory3 &self, std::string v) { + new (&self) TestFactory3(std::move(v)); + }); // placement-new ctor + }); + pyTestFactory3 // 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); })) + .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(py::init([](null_unique_ptr_tag) { return std::unique_ptr<TestFactory3>(); })) .def(py::init([](null_shared_ptr_tag) { return std::shared_ptr<TestFactory3>(); })) - .def_readwrite("value", &TestFactory3::value) - ; + .def_readwrite("value", &TestFactory3::value); // test_init_factory_casting py::class_<TestFactory4, TestFactory3, std::shared_ptr<TestFactory4>>(m, "TestFactory4") @@ -216,58 +289,60 @@ TEST_SUBMODULE(factory_constructors, m) { 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, std::string s) { return PyTF6(std::move(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(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) - ; + .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([](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, const std::string &s) { return TestFactory7((int) s.size()); }, + [](mixed_tag, const 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 + [](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) - ; + .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) { } + explicit 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)); @@ -283,50 +358,62 @@ TEST_SUBMODULE(factory_constructors, m) { py::class_<NoPlacementNew>(m, "NoPlacementNew") .def(py::init<int>()) .def(py::init([]() { return new NoPlacementNew(100); })) - .def_readwrite("i", &NoPlacementNew::i) - ; - + .def_readwrite("i", &NoPlacementNew::i); // test_reallocations // Class that has verbose operator_new/operator_delete calls struct NoisyAlloc { NoisyAlloc(const NoisyAlloc &) = default; - NoisyAlloc(int i) { py::print(py::str("NoisyAlloc(int {})").format(i)); } - NoisyAlloc(double d) { py::print(py::str("NoisyAlloc(double {})").format(d)); } + explicit NoisyAlloc(int i) { py::print(py::str("NoisyAlloc(int {})").format(i)); } + explicit 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 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): + py::class_<NoisyAlloc> pyNoisyAlloc(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: + ignoreOldStyleInitWarnings([&pyNoisyAlloc]() { + pyNoisyAlloc.def("__init__", [](NoisyAlloc *a, int i) { + new (a) NoisyAlloc(i); + }); // Regular constructor, runs first, requires preallocation + }); + + pyNoisyAlloc.def(py::init([](double d) { return new NoisyAlloc(d); })); + + // The two-argument version: first the factory pointer overload. + pyNoisyAlloc.def(py::init([](int i, int) { return new NoisyAlloc(i); })); + // Return-by-value: + pyNoisyAlloc.def(py::init([](double d, int) { return NoisyAlloc(d); })); + // Old-style placement new init; requires preallocation + ignoreOldStyleInitWarnings([&pyNoisyAlloc]() { + pyNoisyAlloc.def("__init__", + [](NoisyAlloc &a, double d, double) { new (&a) NoisyAlloc(d); }); + }); + // Requires deallocation of previous overload preallocated value: + pyNoisyAlloc.def(py::init([](int i, double) { return new NoisyAlloc(i); })); + // Regular again: requires yet another preallocation + ignoreOldStyleInitWarnings([&pyNoisyAlloc]() { + pyNoisyAlloc.def( + "__init__", [](NoisyAlloc &a, int i, const 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 {}; |