| //===----------------------------------------------------------------------===// |
| // |
| // 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___TUPLE_APPLY_CV_H |
| #define _LIBCPP___TUPLE_APPLY_CV_H |
| |
| #include <__config> |
| #include <__type_traits/is_const.h> |
| #include <__type_traits/is_reference.h> |
| #include <__type_traits/is_volatile.h> |
| #include <__type_traits/remove_reference.h> |
| |
| #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) |
| # pragma GCC system_header |
| #endif |
| |
| #ifndef _LIBCPP_CXX03_LANG |
| |
| _LIBCPP_BEGIN_NAMESPACE_STD |
| |
| template <bool _ApplyLV, bool _ApplyConst, bool _ApplyVolatile> |
| struct __apply_cv_mf; |
| template <> |
| struct __apply_cv_mf<false, false, false> { |
| template <class _Tp> using __apply = _Tp; |
| }; |
| template <> |
| struct __apply_cv_mf<false, true, false> { |
| template <class _Tp> using __apply _LIBCPP_NODEBUG = const _Tp; |
| }; |
| template <> |
| struct __apply_cv_mf<false, false, true> { |
| template <class _Tp> using __apply _LIBCPP_NODEBUG = volatile _Tp; |
| }; |
| template <> |
| struct __apply_cv_mf<false, true, true> { |
| template <class _Tp> using __apply _LIBCPP_NODEBUG = const volatile _Tp; |
| }; |
| template <> |
| struct __apply_cv_mf<true, false, false> { |
| template <class _Tp> using __apply _LIBCPP_NODEBUG = _Tp&; |
| }; |
| template <> |
| struct __apply_cv_mf<true, true, false> { |
| template <class _Tp> using __apply _LIBCPP_NODEBUG = const _Tp&; |
| }; |
| template <> |
| struct __apply_cv_mf<true, false, true> { |
| template <class _Tp> using __apply _LIBCPP_NODEBUG = volatile _Tp&; |
| }; |
| template <> |
| struct __apply_cv_mf<true, true, true> { |
| template <class _Tp> using __apply _LIBCPP_NODEBUG = const volatile _Tp&; |
| }; |
| template <class _Tp, class _RawTp = __libcpp_remove_reference_t<_Tp> > |
| using __apply_cv_t _LIBCPP_NODEBUG = __apply_cv_mf< |
| is_lvalue_reference<_Tp>::value, |
| is_const<_RawTp>::value, |
| is_volatile<_RawTp>::value>; |
| |
| _LIBCPP_END_NAMESPACE_STD |
| |
| #endif // _LIBCPP_CXX03_LANG |
| |
| #endif // _LIBCPP___TUPLE_APPLY_CV_H |