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| 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_void.h> |
| 15 | #include <__type_traits/remove_reference.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 !defined(_LIBCPP_WORKAROUND_OBJCXX_COMPILER_INTRINSICS) && __has_builtin(__add_pointer) && !defined(_LIBCPP_COMPILER_GCC) |
| 24 | |
| 25 | template <class _Tp> |
| 26 | using __add_pointer_t _LIBCPP_NODEBUG = __add_pointer(_Tp); |
| 27 | |
| 28 | #else |
| 29 | template <class _Tp, bool = __is_referenceable_v<_Tp> || is_void<_Tp>::value> |
| 30 | struct __add_pointer_impl { |
| 31 | using type _LIBCPP_NODEBUG = __libcpp_remove_reference_t<_Tp>*; |
| 32 | }; |
| 33 | template <class _Tp> |
| 34 | struct __add_pointer_impl<_Tp, false> { |
| 35 | using type _LIBCPP_NODEBUG = _Tp; |
| 36 | }; |
| 37 | |
| 38 | template <class _Tp> |
| 39 | using __add_pointer_t = typename __add_pointer_impl<_Tp>::type; |
| 40 | |
| 41 | #endif // !defined(_LIBCPP_WORKAROUND_OBJCXX_COMPILER_INTRINSICS) && __has_builtin(__add_pointer) |
| 42 | |
| 43 | template <class _Tp> |
| 44 | struct _LIBCPP_NO_SPECIALIZATIONS add_pointer { |
| 45 | using type _LIBCPP_NODEBUG = __add_pointer_t<_Tp>; |
| 46 | }; |
| 47 | |
| 48 | #if _LIBCPP_STD_VER >= 14 |
| 49 | template <class _Tp> |
| 50 | 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 |
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