1//===----------------------------------------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#ifndef _LIBCPP___ALGORITHM_RANGES_COPY_H
10#define _LIBCPP___ALGORITHM_RANGES_COPY_H
11
12#include <__algorithm/copy.h>
13#include <__algorithm/in_out_result.h>
14#include <__algorithm/iterator_operations.h>
15#include <__config>
16#include <__functional/identity.h>
17#include <__iterator/concepts.h>
18#include <__ranges/access.h>
19#include <__ranges/concepts.h>
20#include <__ranges/dangling.h>
21#include <__utility/move.h>
22#include <__utility/pair.h>
23
24#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
25# pragma GCC system_header
26#endif
27
28_LIBCPP_PUSH_MACROS
29#include <__undef_macros>
30
31#if _LIBCPP_STD_VER >= 20
32
33_LIBCPP_BEGIN_NAMESPACE_STD
34
35namespace ranges {
36
37template <class _InIter, class _OutIter>
38using copy_result = in_out_result<_InIter, _OutIter>;
39
40namespace __copy {
41struct __fn {
42 template <input_iterator _InIter, sentinel_for<_InIter> _Sent, weakly_incrementable _OutIter>
43 requires indirectly_copyable<_InIter, _OutIter>
44 _LIBCPP_HIDE_FROM_ABI constexpr copy_result<_InIter, _OutIter>
45 operator()(_InIter __first, _Sent __last, _OutIter __result) const {
46 auto __ret = std::__copy<_RangeAlgPolicy>(std::move(__first), std::move(__last), std::move(__result));
47 return {std::move(__ret.first), std::move(__ret.second)};
48 }
49
50 template <input_range _Range, weakly_incrementable _OutIter>
51 requires indirectly_copyable<iterator_t<_Range>, _OutIter>
52 _LIBCPP_HIDE_FROM_ABI constexpr copy_result<borrowed_iterator_t<_Range>, _OutIter>
53 operator()(_Range&& __r, _OutIter __result) const {
54 auto __ret = std::__copy<_RangeAlgPolicy>(ranges::begin(__r), ranges::end(__r), std::move(__result));
55 return {std::move(__ret.first), std::move(__ret.second)};
56 }
57};
58} // namespace __copy
59
60inline namespace __cpo {
61inline constexpr auto copy = __copy::__fn{};
62} // namespace __cpo
63} // namespace ranges
64
65_LIBCPP_END_NAMESPACE_STD
66
67#endif // _LIBCPP_STD_VER >= 20
68
69_LIBCPP_POP_MACROS
70
71#endif // _LIBCPP___ALGORITHM_RANGES_COPY_H
72