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_MEMBER_FUNCTION_POINTER_H 10#define _LIBCPP___TYPE_TRAITS_IS_MEMBER_FUNCTION_POINTER_H 11 12#include <__config> 13#include <__type_traits/integral_constant.h> 14#include <__type_traits/is_function.h> 15#include <__type_traits/remove_cv.h> 16#include <cstddef> 17 18#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 19# pragma GCC system_header 20#endif 21 22_LIBCPP_BEGIN_NAMESPACE_STD 23 24template <class _Tp> 25struct __libcpp_is_member_pointer { 26 enum { __is_member = false, __is_func = false, __is_obj = false }; 27}; 28template <class _Tp, class _Up> 29struct __libcpp_is_member_pointer<_Tp _Up::*> { 30 enum { 31 __is_member = true, 32 __is_func = is_function<_Tp>::value, 33 __is_obj = !__is_func, 34 }; 35}; 36 37#if __has_builtin(__is_member_function_pointer) 38 39template <class _Tp> 40struct _LIBCPP_TEMPLATE_VIS is_member_function_pointer : _BoolConstant<__is_member_function_pointer(_Tp)> {}; 41 42# if _LIBCPP_STD_VER >= 17 43template <class _Tp> 44inline constexpr bool is_member_function_pointer_v = __is_member_function_pointer(_Tp); 45# endif 46 47#else // __has_builtin(__is_member_function_pointer) 48 49template <class _Tp> 50struct _LIBCPP_TEMPLATE_VIS is_member_function_pointer 51 : public _BoolConstant<__libcpp_is_member_pointer<__remove_cv_t<_Tp> >::__is_func> {}; 52 53# if _LIBCPP_STD_VER >= 17 54template <class _Tp> 55inline constexpr bool is_member_function_pointer_v = is_member_function_pointer<_Tp>::value; 56# endif 57 58#endif // __has_builtin(__is_member_function_pointer) 59 60_LIBCPP_END_NAMESPACE_STD 61 62#endif // _LIBCPP___TYPE_TRAITS_IS_MEMBER_FUNCTION_POINTER_H 63