| //===----------------------------------------------------------------------===// | |
| // | |
| // 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___TYPE_TRAITS_IS_PRIMARY_TEMPLATE_H | |
| #define _LIBCPP___TYPE_TRAITS_IS_PRIMARY_TEMPLATE_H | |
| #include <__config> | |
| #include <__type_traits/is_same.h> | |
| #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) | |
| # pragma GCC system_header | |
| #endif | |
| #if _LIBCPP_STD_VER >= 20 | |
| _LIBCPP_BEGIN_NAMESPACE_STD | |
| template <class _Tp> | |
| concept __primary_template = requires { | |
| typename _Tp::__primary_template; | |
| requires _IsSame<typename _Tp::__primary_template, _Tp>::value; | |
| }; | |
| _LIBCPP_END_NAMESPACE_STD | |
| #endif // _LIBCPP_STD_VER >= 20 | |
| #endif // _LIBCPP___TYPE_TRAITS_IS_PRIMARY_TEMPLATE_H |