| Kaido Kert | 56d7c4e | 2024-04-13 12:59:27 -0700 | [diff] [blame] | 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___TUPLE_PAIR_LIKE_H |
| 10 | #define _LIBCPP___TUPLE_PAIR_LIKE_H |
| 11 | |
| 12 | #include <__config> |
| 13 | #include <__tuple/tuple_like.h> |
| 14 | #include <__tuple/tuple_size.h> |
| 15 | #include <__type_traits/remove_cvref.h> |
| 16 | |
| 17 | #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) |
| 18 | # pragma GCC system_header |
| 19 | #endif |
| 20 | |
| 21 | _LIBCPP_BEGIN_NAMESPACE_STD |
| 22 | |
| 23 | #if _LIBCPP_STD_VER >= 20 |
| 24 | |
| 25 | template <class _Tp> |
| 26 | concept __pair_like = __tuple_like<_Tp> && tuple_size<remove_cvref_t<_Tp>>::value == 2; |
| 27 | |
| 28 | #endif // _LIBCPP_STD_VER >= 20 |
| 29 | |
| 30 | _LIBCPP_END_NAMESPACE_STD |
| 31 | |
| 32 | #endif // _LIBCPP___TUPLE_PAIR_LIKE_H |
