mirror of
https://github.com/topjohnwu/libcxx.git
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89 lines
3.0 KiB
C++
89 lines
3.0 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_STABLE_PARTITION_H
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#define _LIBCPP___ALGORITHM_RANGES_STABLE_PARTITION_H
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#include <__algorithm/iterator_operations.h>
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#include <__algorithm/make_projected.h>
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#include <__algorithm/ranges_iterator_concept.h>
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#include <__algorithm/stable_partition.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/permutable.h>
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#include <__iterator/projected.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 <__ranges/subrange.h>
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#include <__utility/forward.h>
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#include <__utility/move.h>
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#include <type_traits>
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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 __stable_partition {
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struct __fn {
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template <class _Iter, class _Sent, class _Proj, class _Pred>
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_LIBCPP_HIDE_FROM_ABI static
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subrange<__remove_cvref_t<_Iter>> __stable_partition_fn_impl(
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_Iter&& __first, _Sent&& __last, _Pred&& __pred, _Proj&& __proj) {
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auto __last_iter = ranges::next(__first, __last);
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auto&& __projected_pred = std::__make_projected(__pred, __proj);
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auto __result = std::__stable_partition<_RangeAlgPolicy>(
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std::move(__first), __last_iter, __projected_pred, __iterator_concept<_Iter>());
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return {std::move(__result), std::move(__last_iter)};
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}
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template <bidirectional_iterator _Iter, sentinel_for<_Iter> _Sent, class _Proj = identity,
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indirect_unary_predicate<projected<_Iter, _Proj>> _Pred>
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requires permutable<_Iter>
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_LIBCPP_HIDE_FROM_ABI
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subrange<_Iter> operator()(_Iter __first, _Sent __last, _Pred __pred, _Proj __proj = {}) const {
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return __stable_partition_fn_impl(__first, __last, __pred, __proj);
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}
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template <bidirectional_range _Range, class _Proj = identity,
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indirect_unary_predicate<projected<iterator_t<_Range>, _Proj>> _Pred>
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requires permutable<iterator_t<_Range>>
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_LIBCPP_HIDE_FROM_ABI
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borrowed_subrange_t<_Range> operator()(_Range&& __range, _Pred __pred, _Proj __proj = {}) const {
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return __stable_partition_fn_impl(ranges::begin(__range), ranges::end(__range), __pred, __proj);
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}
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};
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} // namespace __stable_partition
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inline namespace __cpo {
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inline constexpr auto stable_partition = __stable_partition::__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_STABLE_PARTITION_H
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