Mercurial > hg > CbC > CbC_llvm
comparison libcxx/include/__algorithm/ranges_swap_ranges.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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232:70dce7da266c | 236:c4bab56944e8 |
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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_SWAP_RANGES_H | |
10 #define _LIBCPP___ALGORITHM_RANGES_SWAP_RANGES_H | |
11 | |
12 #include <__algorithm/in_in_result.h> | |
13 #include <__algorithm/iterator_operations.h> | |
14 #include <__algorithm/swap_ranges.h> | |
15 #include <__config> | |
16 #include <__iterator/concepts.h> | |
17 #include <__iterator/iter_swap.h> | |
18 #include <__ranges/access.h> | |
19 #include <__ranges/concepts.h> | |
20 #include <__ranges/dangling.h> | |
21 #include <__utility/move.h> | |
22 | |
23 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) | |
24 # pragma GCC system_header | |
25 #endif | |
26 | |
27 #if _LIBCPP_STD_VER > 17 | |
28 | |
29 _LIBCPP_BEGIN_NAMESPACE_STD | |
30 | |
31 namespace ranges { | |
32 | |
33 template <class _I1, class _I2> | |
34 using swap_ranges_result = in_in_result<_I1, _I2>; | |
35 | |
36 namespace __swap_ranges { | |
37 struct __fn { | |
38 template <input_iterator _I1, sentinel_for<_I1> _S1, | |
39 input_iterator _I2, sentinel_for<_I2> _S2> | |
40 requires indirectly_swappable<_I1, _I2> | |
41 _LIBCPP_HIDE_FROM_ABI constexpr swap_ranges_result<_I1, _I2> | |
42 operator()(_I1 __first1, _S1 __last1, _I2 __first2, _S2 __last2) const { | |
43 auto __ret = std::__swap_ranges<_RangeAlgPolicy>( | |
44 std::move(__first1), std::move(__last1), std::move(__first2), std::move(__last2)); | |
45 return {std::move(__ret.first), std::move(__ret.second)}; | |
46 } | |
47 | |
48 template <input_range _R1, input_range _R2> | |
49 requires indirectly_swappable<iterator_t<_R1>, iterator_t<_R2>> | |
50 _LIBCPP_HIDE_FROM_ABI constexpr | |
51 swap_ranges_result<borrowed_iterator_t<_R1>, borrowed_iterator_t<_R2>> | |
52 operator()(_R1&& __r1, _R2&& __r2) const { | |
53 return operator()(ranges::begin(__r1), ranges::end(__r1), | |
54 ranges::begin(__r2), ranges::end(__r2)); | |
55 } | |
56 }; | |
57 } // namespace __swap_ranges | |
58 | |
59 inline namespace __cpo { | |
60 inline constexpr auto swap_ranges = __swap_ranges::__fn{}; | |
61 } // namespace __cpo | |
62 } // namespace ranges | |
63 | |
64 _LIBCPP_END_NAMESPACE_STD | |
65 | |
66 #endif // _LIBCPP_STD_VER > 17 | |
67 | |
68 #endif // _LIBCPP___ALGORITHM_RANGES_SWAP_RANGES_H |