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// -*- 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___UTILITY_MOVE_H
#define _LIBCPP___UTILITY_MOVE_H
#include <__config>
#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>
_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR typename remove_reference<_Tp>::type&&
move(_Tp&& __t) _NOEXCEPT {
typedef _LIBCPP_NODEBUG_TYPE typename remove_reference<_Tp>::type _Up;
return static_cast<_Up&&>(__t);
}
#ifndef _LIBCPP_CXX03_LANG
template <class _Tp>
using __move_if_noexcept_result_t =
typename conditional<!is_nothrow_move_constructible<_Tp>::value && is_copy_constructible<_Tp>::value, const _Tp&,
_Tp&&>::type;
#else // _LIBCPP_CXX03_LANG
template <class _Tp>
using __move_if_noexcept_result_t = const _Tp&;
#endif
template <class _Tp>
_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 __move_if_noexcept_result_t<_Tp>
move_if_noexcept(_Tp& __x) _NOEXCEPT {
return _VSTD::move(__x);
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___UTILITY_MOVE_H
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