1 //===----------------------------------------------------------------------===//
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
7 //===----------------------------------------------------------------------===//
9 #ifndef _LIBCPP___ALGORITHM_RANGES_COPY_H
10 #define _LIBCPP___ALGORITHM_RANGES_COPY_H
12 #include <__algorithm/copy.h>
13 #include <__algorithm/in_out_result.h>
15 #include <__functional/identity.h>
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>
22 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
23 # pragma GCC system_header
26 #if _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_INCOMPLETE_RANGES)
28 _LIBCPP_BEGIN_NAMESPACE_STD
32 template <class _InIter, class _OutIter>
33 using copy_result = in_out_result<_InIter, _OutIter>;
38 template <input_iterator _InIter, sentinel_for<_InIter> _Sent, weakly_incrementable _OutIter>
39 requires indirectly_copyable<_InIter, _OutIter>
40 _LIBCPP_HIDE_FROM_ABI constexpr
41 copy_result<_InIter, _OutIter> operator()(_InIter __first, _Sent __last, _OutIter __result) const {
42 auto __ret = std::__copy(std::move(__first), std::move(__last), std::move(__result));
43 return {std::move(__ret.first), std::move(__ret.second)};
46 template <input_range _Range, weakly_incrementable _OutIter>
47 requires indirectly_copyable<iterator_t<_Range>, _OutIter>
48 _LIBCPP_HIDE_FROM_ABI constexpr
49 copy_result<borrowed_iterator_t<_Range>, _OutIter> operator()(_Range&& __r, _OutIter __result) const {
50 auto __ret = std::__copy(ranges::begin(__r), ranges::end(__r), std::move(__result));
51 return {std::move(__ret.first), std::move(__ret.second)};
56 inline namespace __cpo {
57 inline constexpr auto copy = __copy::__fn{};
61 _LIBCPP_END_NAMESPACE_STD
63 #endif // _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_INCOMPLETE_RANGES)
65 #endif // _LIBCPP___ALGORITHM_RANGES_COPY_H