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_CONTAINS_H
10#define _LIBCPP___ALGORITHM_RANGES_CONTAINS_H
11
12#include <__algorithm/ranges_find.h>
13#include <__config>
14#include <__functional/identity.h>
15#include <__functional/ranges_operations.h>
16#include <__functional/reference_wrapper.h>
17#include <__iterator/concepts.h>
18#include <__iterator/indirectly_comparable.h>
19#include <__iterator/projected.h>
20#include <__ranges/access.h>
21#include <__ranges/concepts.h>
22#include <__utility/move.h>
23
24#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
25#  pragma GCC system_header
26#endif
27
28_LIBCPP_PUSH_MACROS
29#include <__undef_macros>
30
31#if _LIBCPP_STD_VER >= 23
32
33_LIBCPP_BEGIN_NAMESPACE_STD
34
35namespace ranges {
36namespace __contains {
37struct __fn {
38  template <input_iterator _Iter, sentinel_for<_Iter> _Sent, class _Type, class _Proj = identity>
39    requires indirect_binary_predicate<ranges::equal_to, projected<_Iter, _Proj>, const _Type*>
40  _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr bool static
41  operator()(_Iter __first, _Sent __last, const _Type& __value, _Proj __proj = {}) {
42    return ranges::find(std::move(__first), __last, __value, std::ref(__proj)) != __last;
43  }
44
45  template <input_range _Range, class _Type, class _Proj = identity>
46    requires indirect_binary_predicate<ranges::equal_to, projected<iterator_t<_Range>, _Proj>, const _Type*>
47  _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr bool static
48  operator()(_Range&& __range, const _Type& __value, _Proj __proj = {}) {
49    return ranges::find(ranges::begin(__range), ranges::end(__range), __value, std::ref(__proj)) !=
50           ranges::end(__range);
51  }
52};
53} // namespace __contains
54
55inline namespace __cpo {
56inline constexpr auto contains = __contains::__fn{};
57} // namespace __cpo
58} // namespace ranges
59
60_LIBCPP_END_NAMESPACE_STD
61
62#endif // _LIBCPP_STD_VER >= 23
63
64_LIBCPP_POP_MACROS
65
66#endif // _LIBCPP___ALGORITHM_RANGES_CONTAINS_H
67