6adbc83ee9
Moves:
* `std::move`, `std::forward`, `std::declval`, and `std::swap` into
`__utility/${FUNCTION_NAME}`.
* `std::swap_ranges` and `std::iter_swap` into
`__algorithm/${FUNCTION_NAME}`
Differential Revision: https://reviews.llvm.org/D103734
53 lines
1.5 KiB
C++
53 lines
1.5 KiB
C++
// -*- C++ -*-
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//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCPP___UTILITY_MOVE_H
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#define _LIBCPP___UTILITY_MOVE_H
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#include <__config>
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#include <type_traits>
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#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
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#pragma GCC system_header
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#endif
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_LIBCPP_PUSH_MACROS
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#include <__undef_macros>
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_LIBCPP_BEGIN_NAMESPACE_STD
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template <class _Tp>
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_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR typename remove_reference<_Tp>::type&&
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move(_Tp&& __t) _NOEXCEPT {
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typedef _LIBCPP_NODEBUG_TYPE typename remove_reference<_Tp>::type _Up;
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return static_cast<_Up&&>(__t);
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}
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#ifndef _LIBCPP_CXX03_LANG
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template <class _Tp>
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using __move_if_noexcept_result_t =
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typename conditional<!is_nothrow_move_constructible<_Tp>::value && is_copy_constructible<_Tp>::value, const _Tp&,
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_Tp&&>::type;
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#else // _LIBCPP_CXX03_LANG
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template <class _Tp>
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using __move_if_noexcept_result_t = const _Tp&;
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#endif
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template <class _Tp>
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_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 __move_if_noexcept_result_t<_Tp>
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move_if_noexcept(_Tp& __x) _NOEXCEPT {
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return _VSTD::move(__x);
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}
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_LIBCPP_END_NAMESPACE_STD
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_LIBCPP_POP_MACROS
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#endif // _LIBCPP___UTILITY_MOVE_H
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