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_IS_HEAP_H
10 #define _LIBCPP___ALGORITHM_RANGES_IS_HEAP_H
11 
12 #include <__algorithm/is_heap.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 <__ranges/access.h>
22 #include <__ranges/concepts.h>
23 #include <__utility/forward.h>
24 #include <__utility/move.h>
25 
26 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
27 #  pragma GCC system_header
28 #endif
29 
30 #if _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_INCOMPLETE_RANGES)
31 
32 _LIBCPP_BEGIN_NAMESPACE_STD
33 
34 namespace ranges {
35 namespace __is_heap {
36 
37 struct __fn {
38 
39   template <random_access_iterator _Iter, sentinel_for<_Iter> _Sent, class _Proj = identity,
40             indirect_strict_weak_order<projected<_Iter, _Proj>> _Comp = ranges::less>
41   _LIBCPP_HIDE_FROM_ABI constexpr
42   bool operator()(_Iter __first, _Sent __last, _Comp __comp = {}, _Proj __proj = {}) const {
43     // TODO: implement
44     (void)__first; (void)__last; (void)__comp; (void)__proj;
45     return {};
46   }
47 
48   template <random_access_range _Range, class _Proj = identity,
49             indirect_strict_weak_order<projected<iterator_t<_Range>, _Proj>> _Comp = ranges::less>
50   _LIBCPP_HIDE_FROM_ABI constexpr
51   bool operator()(_Range&& __range, _Comp __comp = {}, _Proj __proj = {}) const {
52     // TODO: implement
53     (void)__range; (void)__comp; (void)__proj;
54     return {};
55   }
56 };
57 
58 } // namespace __is_heap
59 
60 inline namespace __cpo {
61   inline constexpr auto is_heap = __is_heap::__fn{};
62 } // namespace __cpo
63 } // namespace ranges
64 
65 _LIBCPP_END_NAMESPACE_STD
66 
67 #endif // _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_INCOMPLETE_RANGES)
68 
69 #endif // _LIBCPP___ALGORITHM_RANGES_IS_HEAP_H
70