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Diffstat (limited to 'libcxx/include/__utility/__decay_copy.h')
-rw-r--r-- | libcxx/include/__utility/__decay_copy.h | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/libcxx/include/__utility/__decay_copy.h b/libcxx/include/__utility/__decay_copy.h new file mode 100644 index 000000000000..eda8db6a60f5 --- /dev/null +++ b/libcxx/include/__utility/__decay_copy.h @@ -0,0 +1,39 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// 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___TYPE_TRAITS_DECAY_COPY_H +#define _LIBCPP___TYPE_TRAITS_DECAY_COPY_H + +#include <__config> +#include <__utility/forward.h> +#include <type_traits> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +#pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +template <class _Tp> +inline _LIBCPP_INLINE_VISIBILITY typename decay<_Tp>::type __decay_copy(_Tp&& __t) +#if _LIBCPP_STD_VER > 17 + noexcept(is_nothrow_convertible_v<_Tp, remove_reference_t<_Tp> >) +#endif +{ + return _VSTD::forward<_Tp>(__t); +} + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___TYPE_TRAITS_DECAY_COPY_H |