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d10dc5a06f
We originally put implementation-detail function objects into individual namespaces for `std::ranges` without a good reason for doing so. This practice was continued, presumably because there was prior art. Since there's no reason to keep these namespaces, this commit removes them, which will slightly impact binary size. This commit does not apply to CPOs, some of which need additional work.
68 lines
2.2 KiB
C++
68 lines
2.2 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 <__algorithm/iterator_operations.h>
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#include <__config>
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#include <__iterator/concepts.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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_LIBCPP_PUSH_MACROS
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#include <__undef_macros>
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#if _LIBCPP_STD_VER >= 20
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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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struct __copy_backward {
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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 copy_backward_result<_InIter1, _InIter2>
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operator()(_InIter1 __first, _Sent1 __last, _InIter2 __result) const {
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auto __ret = std::__copy_backward<_RangeAlgPolicy>(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 copy_backward_result<borrowed_iterator_t<_Range>, _Iter>
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operator()(_Range&& __r, _Iter __result) const {
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auto __ret = std::__copy_backward<_RangeAlgPolicy>(ranges::begin(__r), ranges::end(__r), 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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inline namespace __cpo {
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inline constexpr auto copy_backward = __copy_backward{};
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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 >= 20
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_LIBCPP_POP_MACROS
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#endif // _LIBCPP___ALGORITHM_RANGES_COPY_BACKWARD_H
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