forked from OSchip/llvm-project
86 lines
2.9 KiB
C++
86 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_INPLACE_MERGE_H
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#define _LIBCPP___ALGORITHM_RANGES_INPLACE_MERGE_H
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#include <__algorithm/inplace_merge.h>
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#include <__algorithm/iterator_operations.h>
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#include <__algorithm/make_projected.h>
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#include <__config>
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#include <__functional/identity.h>
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#include <__functional/invoke.h>
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#include <__functional/ranges_operations.h>
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#include <__iterator/concepts.h>
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#include <__iterator/iterator_traits.h>
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#include <__iterator/next.h>
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#include <__iterator/projected.h>
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#include <__iterator/sortable.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/forward.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
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_LIBCPP_BEGIN_NAMESPACE_STD
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namespace ranges {
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namespace __inplace_merge {
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struct __fn {
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template <class _Iter, class _Sent, class _Comp, class _Proj>
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_LIBCPP_HIDE_FROM_ABI static constexpr auto
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__inplace_merge_impl(_Iter __first, _Iter __middle, _Sent __last, _Comp&& __comp, _Proj&& __proj) {
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auto __last_iter = ranges::next(__middle, __last);
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std::__inplace_merge<_RangeAlgPolicy>(
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std::move(__first), std::move(__middle), __last_iter, std::__make_projected(__comp, __proj));
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return __last_iter;
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}
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template <
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bidirectional_iterator _Iter,
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sentinel_for<_Iter> _Sent,
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class _Comp = ranges::less,
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class _Proj = identity>
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requires sortable<_Iter, _Comp, _Proj>
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_LIBCPP_HIDE_FROM_ABI _Iter
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operator()(_Iter __first, _Iter __middle, _Sent __last, _Comp __comp = {}, _Proj __proj = {}) const {
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return __inplace_merge_impl(
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std::move(__first), std::move(__middle), std::move(__last), std::move(__comp), std::move(__proj));
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}
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template <bidirectional_range _Range, class _Comp = ranges::less, class _Proj = identity>
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requires sortable<
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iterator_t<_Range>,
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_Comp,
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_Proj> _LIBCPP_HIDE_FROM_ABI borrowed_iterator_t<_Range>
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operator()(_Range&& __range, iterator_t<_Range> __middle, _Comp __comp = {}, _Proj __proj = {}) const {
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return __inplace_merge_impl(
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ranges::begin(__range), std::move(__middle), ranges::end(__range), std::move(__comp), std::move(__proj));
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}
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};
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} // namespace __inplace_merge
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inline namespace __cpo {
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inline constexpr auto inplace_merge = __inplace_merge::__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
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#endif // _LIBCPP___ALGORITHM_RANGES_INPLACE_MERGE_H
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