forked from OSchip/llvm-project
84 lines
2.9 KiB
C++
84 lines
2.9 KiB
C++
//===----------------------------------------------------------------------===//
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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___ALGORITHM_RANGES_MOVE_H
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#define _LIBCPP___ALGORITHM_RANGES_MOVE_H
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#include <__algorithm/in_out_result.h>
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#include <__algorithm/move.h>
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#include <__config>
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#include <__iterator/concepts.h>
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#include <__iterator/iter_move.h>
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#include <__ranges/access.h>
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#include <__ranges/concepts.h>
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#include <__ranges/dangling.h>
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#include <__utility/move.h>
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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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#if _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_INCOMPLETE_RANGES)
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_LIBCPP_BEGIN_NAMESPACE_STD
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namespace ranges {
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template <class _InIter, class _OutIter>
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using move_result = in_out_result<_InIter, _OutIter>;
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namespace __move {
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struct __fn {
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template <class _InIter, class _Sent, class _OutIter>
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requires __iter_move::__move_deref<_InIter> // check that we are allowed to std::move() the value
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_LIBCPP_HIDE_FROM_ABI constexpr static
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move_result<_InIter, _OutIter> __move_impl(_InIter __first, _Sent __last, _OutIter __result) {
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auto __ret = std::__move(std::move(__first), std::move(__last), std::move(__result));
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return {std::move(__ret.first), std::move(__ret.second)};
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}
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template <class _InIter, class _Sent, class _OutIter>
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_LIBCPP_HIDE_FROM_ABI constexpr static
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move_result<_InIter, _OutIter> __move_impl(_InIter __first, _Sent __last, _OutIter __result) {
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while (__first != __last) {
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*__result = ranges::iter_move(__first);
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++__first;
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++__result;
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}
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return {std::move(__first), std::move(__result)};
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}
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template <input_iterator _InIter, sentinel_for<_InIter> _Sent, weakly_incrementable _OutIter>
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requires indirectly_movable<_InIter, _OutIter>
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_LIBCPP_HIDE_FROM_ABI constexpr
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move_result<_InIter, _OutIter> operator()(_InIter __first, _Sent __last, _OutIter __result) const {
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return __move_impl(std::move(__first), std::move(__last), std::move(__result));
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}
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template <input_range _Range, weakly_incrementable _OutIter>
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requires indirectly_movable<iterator_t<_Range>, _OutIter>
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_LIBCPP_HIDE_FROM_ABI constexpr
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move_result<borrowed_iterator_t<_Range>, _OutIter> operator()(_Range&& __range, _OutIter __result) const {
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return __move_impl(ranges::begin(__range), ranges::end(__range), std::move(__result));
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}
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};
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} // namespace __move
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inline namespace __cpo {
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inline constexpr auto move = __move::__fn{};
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} // namespace __cpo
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} // namespace ranges
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_LIBCPP_END_NAMESPACE_STD
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#endif // _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_INCOMPLETE_RANGES)
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#endif // _LIBCPP___ALGORITHM_RANGES_MOVE_H
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