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4f15267d3d
This change is almost fully mechanical. The only interesting change is in `generate_feature_test_macro_components.py` to generate `_LIBCPP_STD_VER >=` instead. To avoid churn in the git-blame this commit should be added to the `.git-blame-ignore-revs` once committed. Reviewed By: ldionne, var-const, #libc Spies: jloser, libcxx-commits, arichardson, arphaman, wenlei Differential Revision: https://reviews.llvm.org/D143962
69 lines
2.2 KiB
C++
69 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_ROTATE_COPY_H
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#define _LIBCPP___ALGORITHM_RANGES_ROTATE_COPY_H
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#include <__algorithm/in_out_result.h>
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#include <__algorithm/ranges_copy.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 >= 20
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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 rotate_copy_result = in_out_result<_InIter, _OutIter>;
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namespace __rotate_copy {
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struct __fn {
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template <bidirectional_iterator _InIter, sentinel_for<_InIter> _Sent, weakly_incrementable _OutIter>
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requires indirectly_copyable<_InIter, _OutIter>
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_LIBCPP_HIDE_FROM_ABI constexpr
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rotate_copy_result<_InIter, _OutIter>
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operator()(_InIter __first, _InIter __middle, _Sent __last, _OutIter __result) const {
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auto __res1 = ranges::copy(__middle, __last, std::move(__result));
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auto __res2 = ranges::copy(__first, __middle, std::move(__res1.out));
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return {std::move(__res1.in), std::move(__res2.out)};
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}
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template <bidirectional_range _Range, weakly_incrementable _OutIter>
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requires indirectly_copyable<iterator_t<_Range>, _OutIter>
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_LIBCPP_HIDE_FROM_ABI constexpr
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rotate_copy_result<borrowed_iterator_t<_Range>, _OutIter>
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operator()(_Range&& __range, iterator_t<_Range> __middle, _OutIter __result) const {
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return (*this)(ranges::begin(__range), std::move(__middle), ranges::end(__range), std::move(__result));
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}
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};
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} // namespace __rotate_copy
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inline namespace __cpo {
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inline constexpr auto rotate_copy = __rotate_copy::__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 >= 20
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#endif // _LIBCPP___ALGORITHM_RANGES_ROTATE_COPY_H
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