1//===---------------------------------------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===---------------------------------------------------------------------===//
8
9#ifndef _LIBCPP___FWD_PAIR_H
10#define _LIBCPP___FWD_PAIR_H
11
12#include <__config>
13#include <__fwd/tuple.h>
14#include <cstddef>
15
16#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
17# pragma GCC system_header
18#endif
19
20_LIBCPP_BEGIN_NAMESPACE_STD
21
22template <class, class>
23struct _LIBCPP_TEMPLATE_VIS pair;
24
25template <size_t _Ip, class _T1, class _T2>
26_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 typename tuple_element<_Ip, pair<_T1, _T2> >::type&
27get(pair<_T1, _T2>&) _NOEXCEPT;
28
29template <size_t _Ip, class _T1, class _T2>
30_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 const typename tuple_element<_Ip, pair<_T1, _T2> >::type&
31get(const pair<_T1, _T2>&) _NOEXCEPT;
32
33#ifndef _LIBCPP_CXX03_LANG
34template <size_t _Ip, class _T1, class _T2>
35_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 typename tuple_element<_Ip, pair<_T1, _T2> >::type&&
36get(pair<_T1, _T2>&&) _NOEXCEPT;
37
38template <size_t _Ip, class _T1, class _T2>
39_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 const typename tuple_element<_Ip, pair<_T1, _T2> >::type&&
40get(const pair<_T1, _T2>&&) _NOEXCEPT;
41#endif
42
43_LIBCPP_END_NAMESPACE_STD
44
45#endif // _LIBCPP___FWD_PAIR_H
46