9783f28cbb
This patch runs clang-format on all of libcxx/include and libcxx/src, in
accordance with the RFC discussed at [1]. Follow-up patches will format
the benchmarks, the test suite and remaining parts of the code. I'm
splitting this one into its own patch so the diff is a bit easier to
review.
This patch was generated with:
find libcxx/include libcxx/src -type f \
| grep -v 'module.modulemap.in' \
| grep -v 'CMakeLists.txt' \
| grep -v 'README.txt' \
| grep -v 'libcxx.imp' \
| grep -v '__config_site.in' \
| xargs clang-format -i
A Git merge driver is available in libcxx/utils/clang-format-merge-driver.sh
to help resolve merge and rebase issues across these formatting changes.
[1]: https://discourse.llvm.org/t/rfc-clang-formatting-all-of-libc-once-and-for-all
105 lines
4.6 KiB
C++
105 lines
4.6 KiB
C++
// -*- C++ -*-
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef _LIBCPP___FUNCTIONAL_PERFECT_FORWARD_H
|
|
#define _LIBCPP___FUNCTIONAL_PERFECT_FORWARD_H
|
|
|
|
#include <__config>
|
|
#include <__type_traits/enable_if.h>
|
|
#include <__type_traits/invoke.h>
|
|
#include <__type_traits/is_constructible.h>
|
|
#include <__utility/declval.h>
|
|
#include <__utility/forward.h>
|
|
#include <__utility/integer_sequence.h>
|
|
#include <__utility/move.h>
|
|
#include <tuple>
|
|
|
|
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
|
|
# pragma GCC system_header
|
|
#endif
|
|
|
|
_LIBCPP_PUSH_MACROS
|
|
#include <__undef_macros>
|
|
|
|
_LIBCPP_BEGIN_NAMESPACE_STD
|
|
|
|
#if _LIBCPP_STD_VER >= 17
|
|
|
|
template <class _Op, class _Indices, class... _BoundArgs>
|
|
struct __perfect_forward_impl;
|
|
|
|
template <class _Op, size_t... _Idx, class... _BoundArgs>
|
|
struct __perfect_forward_impl<_Op, index_sequence<_Idx...>, _BoundArgs...> {
|
|
private:
|
|
tuple<_BoundArgs...> __bound_args_;
|
|
|
|
public:
|
|
template <class... _Args, class = enable_if_t< is_constructible_v<tuple<_BoundArgs...>, _Args&&...> >>
|
|
_LIBCPP_HIDE_FROM_ABI explicit constexpr __perfect_forward_impl(_Args&&... __bound_args)
|
|
: __bound_args_(std::forward<_Args>(__bound_args)...) {}
|
|
|
|
_LIBCPP_HIDE_FROM_ABI __perfect_forward_impl(__perfect_forward_impl const&) = default;
|
|
_LIBCPP_HIDE_FROM_ABI __perfect_forward_impl(__perfect_forward_impl&&) = default;
|
|
|
|
_LIBCPP_HIDE_FROM_ABI __perfect_forward_impl& operator=(__perfect_forward_impl const&) = default;
|
|
_LIBCPP_HIDE_FROM_ABI __perfect_forward_impl& operator=(__perfect_forward_impl&&) = default;
|
|
|
|
template <class... _Args, class = enable_if_t<is_invocable_v<_Op, _BoundArgs&..., _Args...>>>
|
|
_LIBCPP_HIDE_FROM_ABI constexpr auto operator()(_Args&&... __args) & noexcept(
|
|
noexcept(_Op()(std::get<_Idx>(__bound_args_)..., std::forward<_Args>(__args)...)))
|
|
-> decltype(_Op()(std::get<_Idx>(__bound_args_)..., std::forward<_Args>(__args)...)) {
|
|
return _Op()(std::get<_Idx>(__bound_args_)..., std::forward<_Args>(__args)...);
|
|
}
|
|
|
|
template <class... _Args, class = enable_if_t<!is_invocable_v<_Op, _BoundArgs&..., _Args...>>>
|
|
auto operator()(_Args&&...) & = delete;
|
|
|
|
template <class... _Args, class = enable_if_t<is_invocable_v<_Op, _BoundArgs const&..., _Args...>>>
|
|
_LIBCPP_HIDE_FROM_ABI constexpr auto operator()(_Args&&... __args) const& noexcept(
|
|
noexcept(_Op()(std::get<_Idx>(__bound_args_)..., std::forward<_Args>(__args)...)))
|
|
-> decltype(_Op()(std::get<_Idx>(__bound_args_)..., std::forward<_Args>(__args)...)) {
|
|
return _Op()(std::get<_Idx>(__bound_args_)..., std::forward<_Args>(__args)...);
|
|
}
|
|
|
|
template <class... _Args, class = enable_if_t<!is_invocable_v<_Op, _BoundArgs const&..., _Args...>>>
|
|
auto operator()(_Args&&...) const& = delete;
|
|
|
|
template <class... _Args, class = enable_if_t<is_invocable_v<_Op, _BoundArgs..., _Args...>>>
|
|
_LIBCPP_HIDE_FROM_ABI constexpr auto operator()(_Args&&... __args) && noexcept(
|
|
noexcept(_Op()(std::get<_Idx>(std::move(__bound_args_))..., std::forward<_Args>(__args)...)))
|
|
-> decltype(_Op()(std::get<_Idx>(std::move(__bound_args_))..., std::forward<_Args>(__args)...)) {
|
|
return _Op()(std::get<_Idx>(std::move(__bound_args_))..., std::forward<_Args>(__args)...);
|
|
}
|
|
|
|
template <class... _Args, class = enable_if_t<!is_invocable_v<_Op, _BoundArgs..., _Args...>>>
|
|
auto operator()(_Args&&...) && = delete;
|
|
|
|
template <class... _Args, class = enable_if_t<is_invocable_v<_Op, _BoundArgs const..., _Args...>>>
|
|
_LIBCPP_HIDE_FROM_ABI constexpr auto operator()(_Args&&... __args) const&& noexcept(
|
|
noexcept(_Op()(std::get<_Idx>(std::move(__bound_args_))..., std::forward<_Args>(__args)...)))
|
|
-> decltype(_Op()(std::get<_Idx>(std::move(__bound_args_))..., std::forward<_Args>(__args)...)) {
|
|
return _Op()(std::get<_Idx>(std::move(__bound_args_))..., std::forward<_Args>(__args)...);
|
|
}
|
|
|
|
template <class... _Args, class = enable_if_t<!is_invocable_v<_Op, _BoundArgs const..., _Args...>>>
|
|
auto operator()(_Args&&...) const&& = delete;
|
|
};
|
|
|
|
// __perfect_forward implements a perfect-forwarding call wrapper as explained in [func.require].
|
|
template <class _Op, class... _Args>
|
|
using __perfect_forward = __perfect_forward_impl<_Op, index_sequence_for<_Args...>, _Args...>;
|
|
|
|
#endif // _LIBCPP_STD_VER >= 17
|
|
|
|
_LIBCPP_END_NAMESPACE_STD
|
|
|
|
_LIBCPP_POP_MACROS
|
|
|
|
#endif // _LIBCPP___FUNCTIONAL_PERFECT_FORWARD_H
|