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 <__cstddef/size_t.h> |
14 | #include <__fwd/tuple.h> |
15 | |
16 | #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) |
17 | # pragma GCC system_header |
18 | #endif |
19 | |
20 | _LIBCPP_BEGIN_NAMESPACE_STD |
21 | |
22 | template <class, class> |
23 | struct pair; |
24 | |
25 | template <class _Type> |
26 | inline const bool __is_pair_v = false; |
27 | |
28 | template <class _Type1, class _Type2> |
29 | inline const bool __is_pair_v<pair<_Type1, _Type2> > = true; |
30 | |
31 | template <size_t _Ip, class _T1, class _T2> |
32 | _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 typename tuple_element<_Ip, pair<_T1, _T2> >::type& |
33 | get(pair<_T1, _T2>&) _NOEXCEPT; |
34 | |
35 | template <size_t _Ip, class _T1, class _T2> |
36 | _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 const typename tuple_element<_Ip, pair<_T1, _T2> >::type& |
37 | get(const pair<_T1, _T2>&) _NOEXCEPT; |
38 | |
39 | #ifndef _LIBCPP_CXX03_LANG |
40 | template <size_t _Ip, class _T1, class _T2> |
41 | _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 typename tuple_element<_Ip, pair<_T1, _T2> >::type&& |
42 | get(pair<_T1, _T2>&&) _NOEXCEPT; |
43 | |
44 | template <size_t _Ip, class _T1, class _T2> |
45 | _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 const typename tuple_element<_Ip, pair<_T1, _T2> >::type&& |
46 | get(const pair<_T1, _T2>&&) _NOEXCEPT; |
47 | #endif |
48 | |
49 | _LIBCPP_END_NAMESPACE_STD |
50 | |
51 | #endif // _LIBCPP___FWD_PAIR_H |
52 | |