156ab87500
See: * https://discourse.llvm.org/t/rfc-freezing-c-03-headers-in-libc/77319 * https://discourse.llvm.org/t/rfc-project-hand-in-hand-llvm-libc-libc-code-sharing/77701 We're dropping support for C++03 for Zig due to the first change; it would be insane to ship 1018 duplicate header files just for this outdated use case. As a result of the second change, I had to bring in a subset of the headers from llvm-libc since libc++ now depends on these. Hopefully we can continue to get away with not copying the entirety of llvm-libc.
75 lines
2.5 KiB
C++
Vendored
75 lines
2.5 KiB
C++
Vendored
//===----------------------------------------------------------------------===//
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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_MOVE_BACKWARD_H
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#define _LIBCPP___ALGORITHM_RANGES_MOVE_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 <__algorithm/move_backward.h>
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#include <__config>
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#include <__iterator/concepts.h>
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#include <__iterator/iter_move.h>
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#include <__iterator/next.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 _InIter, class _OutIter>
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using move_backward_result = in_out_result<_InIter, _OutIter>;
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struct __move_backward {
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template <class _InIter, class _Sent, class _OutIter>
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_LIBCPP_HIDE_FROM_ABI constexpr static move_backward_result<_InIter, _OutIter>
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__move_backward_impl(_InIter __first, _Sent __last, _OutIter __result) {
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auto __ret = std::__move_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_iterator _InIter, sentinel_for<_InIter> _Sent, bidirectional_iterator _OutIter>
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requires indirectly_movable<_InIter, _OutIter>
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_LIBCPP_HIDE_FROM_ABI constexpr move_backward_result<_InIter, _OutIter>
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operator()(_InIter __first, _Sent __last, _OutIter __result) const {
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return __move_backward_impl(std::move(__first), std::move(__last), std::move(__result));
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}
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template <bidirectional_range _Range, bidirectional_iterator _Iter>
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requires indirectly_movable<iterator_t<_Range>, _Iter>
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_LIBCPP_HIDE_FROM_ABI constexpr move_backward_result<borrowed_iterator_t<_Range>, _Iter>
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operator()(_Range&& __range, _Iter __result) const {
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return __move_backward_impl(ranges::begin(__range), ranges::end(__range), std::move(__result));
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}
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};
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inline namespace __cpo {
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inline constexpr auto move_backward = __move_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_MOVE_BACKWARD_H
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