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4c19854222
In preparation for running clang-format on the whole code base, we are also removing mentions of the legacy _LIBCPP_INLINE_VISIBILITY macro in favor of the newer _LIBCPP_HIDE_FROM_ABI. We're still leaving the definition of _LIBCPP_INLINE_VISIBILITY to avoid creating needless breakage in case some older patches are checked-in with mentions of the old macro. After we branch for LLVM 18, we can do another pass to clean up remaining uses of the macro that might have gotten introduced by mistake (if any) and remove the macro itself at the same time. This is just a minor convenience to smooth out the transition as much as possible. See https://discourse.llvm.org/t/rfc-clang-formatting-all-of-libc-once-and-for-all for the clang-format proposal.
66 lines
2.2 KiB
C++
66 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_REVERSE_H
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#define _LIBCPP___ALGORITHM_REVERSE_H
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#include <__algorithm/iter_swap.h>
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#include <__algorithm/iterator_operations.h>
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#include <__config>
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#include <__iterator/iterator_traits.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_BEGIN_NAMESPACE_STD
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template <class _AlgPolicy, class _BidirectionalIterator>
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inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
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void
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__reverse_impl(_BidirectionalIterator __first, _BidirectionalIterator __last, bidirectional_iterator_tag)
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{
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while (__first != __last)
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{
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if (__first == --__last)
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break;
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_IterOps<_AlgPolicy>::iter_swap(__first, __last);
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++__first;
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}
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}
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template <class _AlgPolicy, class _RandomAccessIterator>
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inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
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void
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__reverse_impl(_RandomAccessIterator __first, _RandomAccessIterator __last, random_access_iterator_tag)
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{
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if (__first != __last)
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for (; __first < --__last; ++__first)
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_IterOps<_AlgPolicy>::iter_swap(__first, __last);
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}
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template <class _AlgPolicy, class _BidirectionalIterator, class _Sentinel>
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_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
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void __reverse(_BidirectionalIterator __first, _Sentinel __last) {
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using _IterCategory = typename _IterOps<_AlgPolicy>::template __iterator_category<_BidirectionalIterator>;
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std::__reverse_impl<_AlgPolicy>(std::move(__first), std::move(__last), _IterCategory());
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}
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template <class _BidirectionalIterator>
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inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
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void
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reverse(_BidirectionalIterator __first, _BidirectionalIterator __last)
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{
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std::__reverse<_ClassicAlgPolicy>(std::move(__first), std::move(__last));
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}
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_LIBCPP_END_NAMESPACE_STD
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#endif // _LIBCPP___ALGORITHM_REVERSE_H
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