68 lines
2.4 KiB
C++
68 lines
2.4 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_COPY_BACKWARD_H
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#define _LIBCPP___ALGORITHM_RANGES_COPY_BACKWARD_H
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#include <__algorithm/copy_backward.h>
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#include <__algorithm/in_out_result.h>
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#include <__config>
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#include <__iterator/concepts.h>
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#include <__iterator/reverse_iterator.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 _Ip, class _Op>
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using copy_backward_result = in_out_result<_Ip, _Op>;
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namespace __copy_backward {
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struct __fn {
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template <bidirectional_iterator _InIter1, sentinel_for<_InIter1> _Sent1, bidirectional_iterator _InIter2>
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requires indirectly_copyable<_InIter1, _InIter2>
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_LIBCPP_HIDE_FROM_ABI constexpr
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copy_backward_result<_InIter1, _InIter2> operator()(_InIter1 __first, _Sent1 __last, _InIter2 __result) const {
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auto __ret = std::__copy_backward(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 <bidirectional_range _Range, bidirectional_iterator _Iter>
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requires indirectly_copyable<iterator_t<_Range>, _Iter>
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_LIBCPP_HIDE_FROM_ABI constexpr
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copy_backward_result<borrowed_iterator_t<_Range>, _Iter> operator()(_Range&& __r, _Iter __result) const {
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auto __ret = std::__copy_backward(ranges::begin(__r),
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ranges::end(__r),
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std::move(__result));
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return {std::move(__ret.first), std::move(__ret.second)};
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}
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};
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} // namespace __copy_backward
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inline namespace __cpo {
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inline constexpr auto copy_backward = __copy_backward::__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_COPY_BACKWARD_H
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