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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_INPLACE_MERGE_H
10 #define _LIBCPP___ALGORITHM_RANGES_INPLACE_MERGE_H
11
12 #include <__algorithm/inplace_merge.h>
13 #include <__algorithm/make_projected.h>
14 #include <__config>
15 #include <__functional/identity.h>
16 #include <__functional/invoke.h>
17 #include <__functional/ranges_operations.h>
18 #include <__iterator/concepts.h>
19 #include <__iterator/iterator_traits.h>
20 #include <__iterator/projected.h>
21 #include <__iterator/sortable.h>
22 #include <__ranges/access.h>
23 #include <__ranges/concepts.h>
24 #include <__ranges/dangling.h>
25 #include <__utility/forward.h>
26 #include <__utility/move.h>
27
28 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
29 #  pragma GCC system_header
30 #endif
31
32 #if _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_INCOMPLETE_RANGES)
33
34 _LIBCPP_BEGIN_NAMESPACE_STD
35
36 namespace ranges {
37 namespace __inplace_merge {
38
39 struct __fn {
40
41   template <bidirectional_iterator _Iter, sentinel_for<_Iter> _Sent, class _Comp = ranges::less, class _Proj = identity>
42   requires sortable<_Iter, _Comp, _Proj>
43   _LIBCPP_HIDE_FROM_ABI
44   _Iter operator()(_Iter __first, _Iter __middle, _Sent __last, _Comp __comp = {}, _Proj __proj = {}) const {
45     // TODO: implement
46     (void)__first; (void)__middle; (void)__last; (void)__comp; (void)__proj;
47     return {};
48   }
49
50   template <bidirectional_range _Range, class _Comp = ranges::less, class _Proj = identity>
51   requires sortable<iterator_t<_Range>, _Comp, _Proj>
52   _LIBCPP_HIDE_FROM_ABI
53   borrowed_iterator_t<_Range> operator()(_Range&& __range, iterator_t<_Range> __middle,
54                                             _Comp __comp = {}, _Proj __proj = {}) const {
55     // TODO: implement
56     (void)__range; (void)__middle; (void)__comp; (void)__proj;
57     return {};
58   }
59
60 };
61
62 } // namespace __inplace_merge
63
64 inline namespace __cpo {
65   inline constexpr auto inplace_merge = __inplace_merge::__fn{};
66 } // namespace __cpo
67 } // namespace ranges
68
69 _LIBCPP_END_NAMESPACE_STD
70
71 #endif // _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_INCOMPLETE_RANGES)
72
73 #endif // _LIBCPP___ALGORITHM_RANGES_INPLACE_MERGE_H