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_ADD_POINTER_H 10#define _LIBCPP___TYPE_TRAITS_ADD_POINTER_H 11 12#include <__config> 13#include <__type_traits/is_referenceable.h> 14#include <__type_traits/is_same.h> 15#include <__type_traits/is_void.h> 16#include <__type_traits/remove_cv.h> 17#include <__type_traits/remove_reference.h> 18 19#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 20# pragma GCC system_header 21#endif 22 23_LIBCPP_BEGIN_NAMESPACE_STD 24 25#if !defined(_LIBCPP_WORKAROUND_OBJCXX_COMPILER_INTRINSICS) && __has_builtin(__add_pointer) 26 27template <class _Tp> 28using __add_pointer_t = __add_pointer(_Tp); 29 30#else 31template <class _Tp, 32 bool = __libcpp_is_referenceable<_Tp>::value || is_void<_Tp>::value> 33struct __add_pointer_impl { 34 typedef _LIBCPP_NODEBUG __libcpp_remove_reference_t<_Tp>* type; 35}; 36template <class _Tp> struct __add_pointer_impl<_Tp, false> 37 {typedef _LIBCPP_NODEBUG _Tp type;}; 38 39template <class _Tp> 40using __add_pointer_t = typename __add_pointer_impl<_Tp>::type; 41 42#endif // !defined(_LIBCPP_WORKAROUND_OBJCXX_COMPILER_INTRINSICS) && __has_builtin(__add_pointer) 43 44template <class _Tp> 45struct add_pointer { 46 using type _LIBCPP_NODEBUG = __add_pointer_t<_Tp>; 47}; 48 49#if _LIBCPP_STD_VER > 11 50template <class _Tp> using add_pointer_t = __add_pointer_t<_Tp>; 51#endif 52 53_LIBCPP_END_NAMESPACE_STD 54 55#endif // _LIBCPP___TYPE_TRAITS_ADD_POINTER_H 56