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_FIND_IF_H
10#define _LIBCPP___ALGORITHM_RANGES_FIND_IF_H
11
12#include <__algorithm/find_if.h>
13#include <__config>
14#include <__functional/identity.h>
15#include <__functional/invoke.h>
16#include <__iterator/concepts.h>
17#include <__iterator/projected.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_LIBCPP_PUSH_MACROS
28#include <__undef_macros>
29
30#if _LIBCPP_STD_VER >= 20
31
32_LIBCPP_BEGIN_NAMESPACE_STD
33
34namespace ranges {
35
36struct __find_if {
37 template <input_iterator _Ip,
38 sentinel_for<_Ip> _Sp,
39 class _Proj = identity,
40 indirect_unary_predicate<projected<_Ip, _Proj>> _Pred>
41 [[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr _Ip
42 operator()(_Ip __first, _Sp __last, _Pred __pred, _Proj __proj = {}) const {
43 return std::__find_if(std::move(__first), std::move(__last), __pred, __proj);
44 }
45
46 template <input_range _Rp, class _Proj = identity, indirect_unary_predicate<projected<iterator_t<_Rp>, _Proj>> _Pred>
47 [[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr borrowed_iterator_t<_Rp>
48 operator()(_Rp&& __r, _Pred __pred, _Proj __proj = {}) const {
49 return std::__find_if(ranges::begin(__r), ranges::end(__r), __pred, __proj);
50 }
51};
52
53inline namespace __cpo {
54inline constexpr auto find_if = __find_if{};
55} // namespace __cpo
56} // namespace ranges
57
58_LIBCPP_END_NAMESPACE_STD
59
60#endif // _LIBCPP_STD_VER >= 20
61
62_LIBCPP_POP_MACROS
63
64#endif // _LIBCPP___ALGORITHM_RANGES_FIND_IF_H
65