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___TYPE_TRAITS_IS_PRIMARY_TEMPLATE_H 10 #define _LIBCPP___TYPE_TRAITS_IS_PRIMARY_TEMPLATE_H 11 12 #include <__config> 13 #include <__type_traits/enable_if.h> 14 #include <__type_traits/is_same.h> 15 #include <__type_traits/is_valid_expansion.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 template <class _Tp> 24 using __test_for_primary_template = __enable_if_t<_IsSame<_Tp, typename _Tp::__primary_template>::value>; 25 26 template <class _Tp> 27 using __is_primary_template = _IsValidExpansion<__test_for_primary_template, _Tp>; 28 29 _LIBCPP_END_NAMESPACE_STD 30 31 #endif // _LIBCPP___TYPE_TRAITS_IS_PRIMARY_TEMPLATE_H 32