mirror of
https://github.com/autc04/Retro68.git
synced 2024-09-07 13:54:33 +00:00
81 lines
2.4 KiB
C++
81 lines
2.4 KiB
C++
// <experimental/tuple> -*- C++ -*-
|
|
|
|
// Copyright (C) 2014-2019 Free Software Foundation, Inc.
|
|
//
|
|
// This file is part of the GNU ISO C++ Library. This library is free
|
|
// software; you can redistribute it and/or modify it under the
|
|
// terms of the GNU General Public License as published by the
|
|
// Free Software Foundation; either version 3, or (at your option)
|
|
// any later version.
|
|
|
|
// This library is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU General Public License for more details.
|
|
|
|
// Under Section 7 of GPL version 3, you are granted additional
|
|
// permissions described in the GCC Runtime Library Exception, version
|
|
// 3.1, as published by the Free Software Foundation.
|
|
|
|
// You should have received a copy of the GNU General Public License and
|
|
// a copy of the GCC Runtime Library Exception along with this program;
|
|
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
|
|
// <http://www.gnu.org/licenses/>.
|
|
|
|
/** @file experimental/tuple
|
|
* This is a TS C++ Library header.
|
|
*/
|
|
|
|
#ifndef _GLIBCXX_EXPERIMENTAL_TUPLE
|
|
#define _GLIBCXX_EXPERIMENTAL_TUPLE 1
|
|
|
|
#pragma GCC system_header
|
|
|
|
#if __cplusplus >= 201402L
|
|
|
|
#include <tuple>
|
|
#include <bits/invoke.h>
|
|
#include <experimental/bits/lfts_config.h>
|
|
|
|
namespace std _GLIBCXX_VISIBILITY(default)
|
|
{
|
|
_GLIBCXX_BEGIN_NAMESPACE_VERSION
|
|
|
|
namespace experimental
|
|
{
|
|
inline namespace fundamentals_v1
|
|
{
|
|
// See C++14 20.4.2.5, tuple helper classes
|
|
template <typename _Tp>
|
|
constexpr size_t tuple_size_v = tuple_size<_Tp>::value;
|
|
|
|
#define __cpp_lib_experimental_tuple 201402
|
|
|
|
template <typename _Fn, typename _Tuple, std::size_t... _Idx>
|
|
constexpr decltype(auto)
|
|
__apply_impl(_Fn&& __f, _Tuple&& __t, std::index_sequence<_Idx...>)
|
|
{
|
|
return std::__invoke(std::forward<_Fn>(__f),
|
|
std::get<_Idx>(std::forward<_Tuple>(__t))...);
|
|
}
|
|
|
|
template <typename _Fn, typename _Tuple>
|
|
constexpr decltype(auto)
|
|
apply(_Fn&& __f, _Tuple&& __t)
|
|
{
|
|
using _Indices =
|
|
std::make_index_sequence<tuple_size_v<std::decay_t<_Tuple>>>;
|
|
return experimental::__apply_impl(std::forward<_Fn>(__f),
|
|
std::forward<_Tuple>(__t),
|
|
_Indices{});
|
|
}
|
|
} // namespace fundamentals_v1
|
|
} // namespace experimental
|
|
|
|
_GLIBCXX_END_NAMESPACE_VERSION
|
|
} // namespace std
|
|
|
|
#endif // C++14
|
|
|
|
#endif // _GLIBCXX_EXPERIMENTAL_TUPLE
|