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* Changing `_MSC_VER` guard to `< 1910` (dropping MSVC 2015). * Removing MSVC 2015 from ci.yml, and .appveyor.yml entirely. * Bringing back .appveyor.yml from master. * appveyor Visual Studio 2017 * 1st manual pass, builds & tests with unix_clang, before pre-commit. * After clang-format (via pre-commit). * Manual pass looking for "2015", builds & tests with unix_clang, before pre-commit. * Backtracking for include/pybind11 changes in previous commit. git checkoutd07865846c
include/pybind11/attr.h include/pybind11/detail/common.h include/pybind11/functional.h -------------------- CI #4160 errors observed:2a26873727
https://github.com/pybind/pybind11/runs/5168332130?check_suite_focus=true $ grep ' error C' *.txt | sed 's/2022-02-12[^ ]*//' | sed 's/^[0-9][0-9]*//' | sed 's/^.*\.txt: //' | sort | uniqD:\a\pybind11\pybind11\include\pybind11\cast.h(1364,1): error C2752: 'pybind11::detail::type_caster<Eigen::Ref<Eigen::Vector3f,0,pybind11::EigenDStride>,void>': more than one partial specialization matches the template argument list [D:\a\pybind11\pybind11\build\tests\pybind11_tests.vcxproj] d:\a\pybind11\pybind11\include\pybind11\detail/common.h(1023): error C2737: 'pybind11::overload_cast': 'constexpr' object must be initialized [D:\a\pybind11\pybind11\build\tests\cross_module_gil_utils.vcxproj] d:\a\pybind11\pybind11\include\pybind11\detail/common.h(1023): error C2737: 'pybind11::overload_cast': 'constexpr' object must be initialized [D:\a\pybind11\pybind11\build\tests\pybind11_cross_module_tests.vcxproj] d:\a\pybind11\pybind11\include\pybind11\detail/common.h(1023): error C2737: 'pybind11::overload_cast': 'constexpr' object must be initialized [D:\a\pybind11\pybind11\build\tests\pybind11_tests.vcxproj] d:\a\pybind11\pybind11\include\pybind11\detail/common.h(1023): error C2737: 'pybind11::overload_cast': 'constexpr' object must be initialized [D:\a\pybind11\pybind11\build\tests\test_embed\external_module.vcxproj] D:\a\pybind11\pybind11\include\pybind11\detail/common.h(624): fatal error C1001: Internal compiler error. [D:\a\pybind11\pybind11\build\tests\pybind11_tests.vcxproj] D:\a\pybind11\pybind11\include\pybind11\detail/common.h(624): fatal error C1001: Internal compiler error. [D:\a\pybind11\pybind11\tests\pybind11_tests.vcxproj] $ grep ': error C2737' *.txt | sed 's/^.*MSVC//' | sed 's/___.*//' | sort | uniq _2017 $ grep ': error C2752' *.txt 3______3.8_____MSVC_2019_____x86_-DCMAKE_CXX_STANDARD=17.txt:2022-02-12T16:12:45.9921122Z D:\a\pybind11\pybind11\include\pybind11\cast.h(1364,1): error C2752: 'pybind11::detail::type_caster<Eigen::Ref<Eigen::Vector3f,0,pybind11::EigenDStride>,void>': more than one partial specialization matches the template argument list [D:\a\pybind11\pybind11\build\tests\pybind11_tests.vcxproj] $ grep ': fatal error C1001:' *.txt 10______pypy-3.8-v7.3.7_____windows-2022_____x64.txt:2022-02-12T16:12:56.3163683Z D:\a\pybind11\pybind11\include\pybind11\detail/common.h(624): fatal error C1001: Internal compiler error. [D:\a\pybind11\pybind11\tests\pybind11_tests.vcxproj] 1______3.6_____MSVC_2019_____x86.txt:2022-02-12T16:12:47.6774625Z D:\a\pybind11\pybind11\include\pybind11\detail/common.h(624): fatal error C1001: Internal compiler error. [D:\a\pybind11\pybind11\build\tests\pybind11_tests.vcxproj] 16______3.6_____windows-latest_____x64_-DPYBIND11_FINDPYTHON=ON.txt:2022-02-12T16:12:27.0556151Z D:\a\pybind11\pybind11\include\pybind11\detail/common.h(624): fatal error C1001: Internal compiler error. [D:\a\pybind11\pybind11\tests\pybind11_tests.vcxproj] 17______3.9_____windows-2019_____x64.txt:2022-02-12T16:12:30.3822566Z D:\a\pybind11\pybind11\include\pybind11\detail/common.h(624): fatal error C1001: Internal compiler error. [D:\a\pybind11\pybind11\tests\pybind11_tests.vcxproj] 2______3.7_____MSVC_2019_____x86.txt:2022-02-12T16:12:38.7018911Z D:\a\pybind11\pybind11\include\pybind11\detail/common.h(624): fatal error C1001: Internal compiler error. [D:\a\pybind11\pybind11\build\tests\pybind11_tests.vcxproj] 6______3.6_____windows-2022_____x64.txt:2022-02-12T16:12:00.4513642Z D:\a\pybind11\pybind11\include\pybind11\detail/common.h(624): fatal error C1001: Internal compiler error. [D:\a\pybind11\pybind11\tests\pybind11_tests.vcxproj] 7______3.9_____windows-2022_____x64.txt:2022-02-12T16:11:43.6306160Z D:\a\pybind11\pybind11\include\pybind11\detail/common.h(624): fatal error C1001: Internal compiler error. [D:\a\pybind11\pybind11\tests\pybind11_tests.vcxproj] 8______3.10_____windows-2022_____x64.txt:2022-02-12T16:11:49.9589644Z D:\a\pybind11\pybind11\include\pybind11\detail/common.h(624): fatal error C1001: Internal compiler error. [D:\a\pybind11\pybind11\tests\pybind11_tests.vcxproj] 9______pypy-3.7-v7.3.7_____windows-2022_____x64.txt:2022-02-12T16:11:53.7912112Z D:\a\pybind11\pybind11\include\pybind11\detail/common.h(624): fatal error C1001: Internal compiler error. [D:\a\pybind11\pybind11\tests\pybind11_tests.vcxproj] * common.h: is_template_base_of * Re-applying 4 changes from2a26873727
that work universally. * `overload_cast = {};` only for MSVC 2017 and Clang 5 * Refining condition for using is_template_base_of workaround. * Undoing MSVC 2015 workaround in test_constants_and_functions.cpp * CentOS7: silence_unused_warnings * Tweaks in response to reviews. * Adding windows-2022 C++20 * Trying another way of adding windows-2022 C++20
131 lines
4.5 KiB
C++
131 lines
4.5 KiB
C++
/*
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pybind11/functional.h: std::function<> support
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Copyright (c) 2016 Wenzel Jakob <wenzel.jakob@epfl.ch>
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All rights reserved. Use of this source code is governed by a
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BSD-style license that can be found in the LICENSE file.
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*/
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#pragma once
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#include "pybind11.h"
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#include <functional>
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PYBIND11_NAMESPACE_BEGIN(PYBIND11_NAMESPACE)
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PYBIND11_NAMESPACE_BEGIN(detail)
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template <typename Return, typename... Args>
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struct type_caster<std::function<Return(Args...)>> {
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using type = std::function<Return(Args...)>;
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using retval_type = conditional_t<std::is_same<Return, void>::value, void_type, Return>;
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using function_type = Return (*)(Args...);
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public:
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bool load(handle src, bool convert) {
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if (src.is_none()) {
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// Defer accepting None to other overloads (if we aren't in convert mode):
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if (!convert) {
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return false;
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}
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return true;
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}
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if (!isinstance<function>(src)) {
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return false;
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}
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auto func = reinterpret_borrow<function>(src);
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/*
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When passing a C++ function as an argument to another C++
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function via Python, every function call would normally involve
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a full C++ -> Python -> C++ roundtrip, which can be prohibitive.
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Here, we try to at least detect the case where the function is
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stateless (i.e. function pointer or lambda function without
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captured variables), in which case the roundtrip can be avoided.
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*/
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if (auto cfunc = func.cpp_function()) {
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auto *cfunc_self = PyCFunction_GET_SELF(cfunc.ptr());
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if (isinstance<capsule>(cfunc_self)) {
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auto c = reinterpret_borrow<capsule>(cfunc_self);
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auto *rec = (function_record *) c;
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while (rec != nullptr) {
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if (rec->is_stateless
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&& same_type(typeid(function_type),
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*reinterpret_cast<const std::type_info *>(rec->data[1]))) {
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struct capture {
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function_type f;
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};
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value = ((capture *) &rec->data)->f;
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return true;
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}
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rec = rec->next;
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}
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}
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// PYPY segfaults here when passing builtin function like sum.
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// Raising an fail exception here works to prevent the segfault, but only on gcc.
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// See PR #1413 for full details
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}
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// ensure GIL is held during functor destruction
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struct func_handle {
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function f;
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#if !(defined(_MSC_VER) && _MSC_VER == 1916 && defined(PYBIND11_CPP17))
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// This triggers a syntax error under very special conditions (very weird indeed).
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explicit
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#endif
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func_handle(function &&f_) noexcept
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: f(std::move(f_)) {
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}
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func_handle(const func_handle &f_) { operator=(f_); }
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func_handle &operator=(const func_handle &f_) {
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gil_scoped_acquire acq;
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f = f_.f;
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return *this;
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}
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~func_handle() {
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gil_scoped_acquire acq;
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function kill_f(std::move(f));
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}
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};
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// to emulate 'move initialization capture' in C++11
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struct func_wrapper {
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func_handle hfunc;
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explicit func_wrapper(func_handle &&hf) noexcept : hfunc(std::move(hf)) {}
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Return operator()(Args... args) const {
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gil_scoped_acquire acq;
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object retval(hfunc.f(std::forward<Args>(args)...));
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return retval.template cast<Return>();
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}
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};
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value = func_wrapper(func_handle(std::move(func)));
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return true;
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}
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template <typename Func>
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static handle cast(Func &&f_, return_value_policy policy, handle /* parent */) {
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if (!f_) {
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return none().inc_ref();
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}
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auto result = f_.template target<function_type>();
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if (result) {
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return cpp_function(*result, policy).release();
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}
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return cpp_function(std::forward<Func>(f_), policy).release();
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}
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PYBIND11_TYPE_CASTER(type,
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const_name("Callable[[") + concat(make_caster<Args>::name...)
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+ const_name("], ") + make_caster<retval_type>::name
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+ const_name("]"));
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};
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PYBIND11_NAMESPACE_END(detail)
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PYBIND11_NAMESPACE_END(PYBIND11_NAMESPACE)
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