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_MOVE_H
10 #define _LIBCPP___ALGORITHM_RANGES_MOVE_H
11 
12 #include <__algorithm/in_out_result.h>
13 #include <__algorithm/iterator_operations.h>
14 #include <__algorithm/move.h>
15 #include <__config>
16 #include <__iterator/concepts.h>
17 #include <__ranges/access.h>
18 #include <__ranges/concepts.h>
19 #include <__ranges/dangling.h>
20 #include <__utility/move.h>
21 
22 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
23 #  pragma GCC system_header
24 #endif
25 
26 _LIBCPP_PUSH_MACROS
27 #include <__undef_macros>
28 
29 #if _LIBCPP_STD_VER >= 20
30 
31 _LIBCPP_BEGIN_NAMESPACE_STD
32 
33 namespace ranges {
34 
35 template <class _InIter, class _OutIter>
36 using move_result = in_out_result<_InIter, _OutIter>;
37 
38 namespace __move {
39 struct __fn {
40   template <class _InIter, class _Sent, class _OutIter>
41   _LIBCPP_HIDE_FROM_ABI constexpr static move_result<_InIter, _OutIter>
__move_impl__fn42   __move_impl(_InIter __first, _Sent __last, _OutIter __result) {
43     auto __ret = std::__move<_RangeAlgPolicy>(std::move(__first), std::move(__last), std::move(__result));
44     return {std::move(__ret.first), std::move(__ret.second)};
45   }
46 
47   template <input_iterator _InIter, sentinel_for<_InIter> _Sent, weakly_incrementable _OutIter>
48     requires indirectly_movable<_InIter, _OutIter>
49   _LIBCPP_HIDE_FROM_ABI constexpr move_result<_InIter, _OutIter>
operator__fn50   operator()(_InIter __first, _Sent __last, _OutIter __result) const {
51     return __move_impl(std::move(__first), std::move(__last), std::move(__result));
52   }
53 
54   template <input_range _Range, weakly_incrementable _OutIter>
55     requires indirectly_movable<iterator_t<_Range>, _OutIter>
56   _LIBCPP_HIDE_FROM_ABI constexpr move_result<borrowed_iterator_t<_Range>, _OutIter>
operator__fn57   operator()(_Range&& __range, _OutIter __result) const {
58     return __move_impl(ranges::begin(__range), ranges::end(__range), std::move(__result));
59   }
60 };
61 } // namespace __move
62 
63 inline namespace __cpo {
64 inline constexpr auto move = __move::__fn{};
65 } // namespace __cpo
66 } // namespace ranges
67 
68 _LIBCPP_END_NAMESPACE_STD
69 
70 #endif // _LIBCPP_STD_VER >= 20
71 
72 _LIBCPP_POP_MACROS
73 
74 #endif // _LIBCPP___ALGORITHM_RANGES_MOVE_H
75