contrib/llvm-project/libcxx/include/__type_traits/maybe_const.h

   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_MAYBE_CONST_H
  10 #define _LIBCPP___TYPE_TRAITS_MAYBE_CONST_H
  11
  12 #include <__config>
  13 #include <__type_traits/conditional.h>
  14
  15 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
  16 #  pragma GCC system_header
  17 #endif
  18
  19 _LIBCPP_BEGIN_NAMESPACE_STD
  20
  21 template <bool _Const, class _Tp>
  22 using __maybe_const = __conditional_t<_Const, const _Tp, _Tp>;
  23
  24 _LIBCPP_END_NAMESPACE_STD
  25
  26 #endif // _LIBCPP___TYPE_TRAITS_MAYBE_CONST_H