Mercurial > hg > CbC > CbC_llvm
diff libcxx/include/__algorithm/ranges_copy_backward.h @ 236:c4bab56944e8 llvm-original
LLVM 16
author | kono |
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date | Wed, 09 Nov 2022 17:45:10 +0900 |
parents | |
children | 1f2b6ac9f198 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/libcxx/include/__algorithm/ranges_copy_backward.h Wed Nov 09 17:45:10 2022 +0900 @@ -0,0 +1,66 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___ALGORITHM_RANGES_COPY_BACKWARD_H +#define _LIBCPP___ALGORITHM_RANGES_COPY_BACKWARD_H + +#include <__algorithm/copy_backward.h> +#include <__algorithm/in_out_result.h> +#include <__algorithm/iterator_operations.h> +#include <__config> +#include <__iterator/concepts.h> +#include <__iterator/reverse_iterator.h> +#include <__ranges/access.h> +#include <__ranges/concepts.h> +#include <__ranges/dangling.h> +#include <__utility/move.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +#if _LIBCPP_STD_VER > 17 + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace ranges { + +template<class _Ip, class _Op> +using copy_backward_result = in_out_result<_Ip, _Op>; + +namespace __copy_backward { +struct __fn { + + template <bidirectional_iterator _InIter1, sentinel_for<_InIter1> _Sent1, bidirectional_iterator _InIter2> + requires indirectly_copyable<_InIter1, _InIter2> + _LIBCPP_HIDE_FROM_ABI constexpr + copy_backward_result<_InIter1, _InIter2> operator()(_InIter1 __first, _Sent1 __last, _InIter2 __result) const { + auto __ret = std::__copy_backward<_RangeAlgPolicy>(std::move(__first), std::move(__last), std::move(__result)); + return {std::move(__ret.first), std::move(__ret.second)}; + } + + template <bidirectional_range _Range, bidirectional_iterator _Iter> + requires indirectly_copyable<iterator_t<_Range>, _Iter> + _LIBCPP_HIDE_FROM_ABI constexpr + copy_backward_result<borrowed_iterator_t<_Range>, _Iter> operator()(_Range&& __r, _Iter __result) const { + auto __ret = std::__copy_backward<_RangeAlgPolicy>(ranges::begin(__r), ranges::end(__r), std::move(__result)); + return {std::move(__ret.first), std::move(__ret.second)}; + } +}; +} // namespace __copy_backward + +inline namespace __cpo { + inline constexpr auto copy_backward = __copy_backward::__fn{}; +} // namespace __cpo +} // namespace ranges + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP_STD_VER > 17 + +#endif // _LIBCPP___ALGORITHM_RANGES_COPY_BACKWARD_H