llvm-capstone/libcxx/include/__algorithm/ranges_reverse_copy.h
Louis Dionne 5aa03b648b [libc++][NFC] Apply clang-format on large parts of the code base
This commit does a pass of clang-format over files in libc++ that
don't require major changes to conform to our style guide, or for
which we're not overly concerned about conflicting with in-flight
patches or hindering the git blame.

This roughly covers:
- benchmarks
- range algorithms
- concepts
- type traits

I did a manual verification of all the changes, and in particular I
applied clang-format on/off annotations in a few places where the
result was less readable after than before. This was not necessary
in a lot of places, however I did find that clang-format had pretty
bad taste when it comes to formatting concepts.

Differential Revision: https://reviews.llvm.org/D153140
2023-06-19 11:19:51 -04:00

66 lines
2.2 KiB
C++

//===----------------------------------------------------------------------===//
//
// 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_REVERSE_COPY_H
#define _LIBCPP___ALGORITHM_RANGES_REVERSE_COPY_H
#include <__algorithm/in_out_result.h>
#include <__algorithm/ranges_copy.h>
#include <__config>
#include <__iterator/concepts.h>
#include <__iterator/next.h>
#include <__iterator/reverse_iterator.h>
#include <__ranges/access.h>
#include <__ranges/concepts.h>
#include <__ranges/dangling.h>
#include <__ranges/subrange.h>
#include <__utility/move.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
#if _LIBCPP_STD_VER >= 20
_LIBCPP_BEGIN_NAMESPACE_STD
namespace ranges {
template <class _InIter, class _OutIter>
using reverse_copy_result = in_out_result<_InIter, _OutIter>;
namespace __reverse_copy {
struct __fn {
template <bidirectional_iterator _InIter, sentinel_for<_InIter> _Sent, weakly_incrementable _OutIter>
requires indirectly_copyable<_InIter, _OutIter>
_LIBCPP_HIDE_FROM_ABI constexpr reverse_copy_result<_InIter, _OutIter>
operator()(_InIter __first, _Sent __last, _OutIter __result) const {
return (*this)(subrange(std::move(__first), std::move(__last)), std::move(__result));
}
template <bidirectional_range _Range, weakly_incrementable _OutIter>
requires indirectly_copyable<iterator_t<_Range>, _OutIter>
_LIBCPP_HIDE_FROM_ABI constexpr reverse_copy_result<borrowed_iterator_t<_Range>, _OutIter>
operator()(_Range&& __range, _OutIter __result) const {
auto __ret = ranges::copy(std::__reverse_range(__range), std::move(__result));
return {ranges::next(ranges::begin(__range), ranges::end(__range)), std::move(__ret.out)};
}
};
} // namespace __reverse_copy
inline namespace __cpo {
inline constexpr auto reverse_copy = __reverse_copy::__fn{};
} // namespace __cpo
} // namespace ranges
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP_STD_VER >= 20
#endif // _LIBCPP___ALGORITHM_RANGES_REVERSE_COPY_H