1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
|
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP___CXX03___ALGORITHM_RANGES_FIND_IF_H
#define _LIBCPP___CXX03___ALGORITHM_RANGES_FIND_IF_H
#include <__cxx03/__config>
#include <__cxx03/__functional/identity.h>
#include <__cxx03/__functional/invoke.h>
#include <__cxx03/__functional/ranges_operations.h>
#include <__cxx03/__iterator/concepts.h>
#include <__cxx03/__iterator/projected.h>
#include <__cxx03/__ranges/access.h>
#include <__cxx03/__ranges/concepts.h>
#include <__cxx03/__ranges/dangling.h>
#include <__cxx03/__utility/move.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__cxx03/__undef_macros>
#if _LIBCPP_STD_VER >= 20
_LIBCPP_BEGIN_NAMESPACE_STD
namespace ranges {
template <class _Ip, class _Sp, class _Pred, class _Proj>
_LIBCPP_HIDE_FROM_ABI constexpr _Ip __find_if_impl(_Ip __first, _Sp __last, _Pred& __pred, _Proj& __proj) {
for (; __first != __last; ++__first) {
if (std::invoke(__pred, std::invoke(__proj, *__first)))
break;
}
return __first;
}
namespace __find_if {
struct __fn {
template <input_iterator _Ip,
sentinel_for<_Ip> _Sp,
class _Proj = identity,
indirect_unary_predicate<projected<_Ip, _Proj>> _Pred>
[[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr _Ip
operator()(_Ip __first, _Sp __last, _Pred __pred, _Proj __proj = {}) const {
return ranges::__find_if_impl(std::move(__first), std::move(__last), __pred, __proj);
}
template <input_range _Rp, class _Proj = identity, indirect_unary_predicate<projected<iterator_t<_Rp>, _Proj>> _Pred>
[[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr borrowed_iterator_t<_Rp>
operator()(_Rp&& __r, _Pred __pred, _Proj __proj = {}) const {
return ranges::__find_if_impl(ranges::begin(__r), ranges::end(__r), __pred, __proj);
}
};
} // namespace __find_if
inline namespace __cpo {
inline constexpr auto find_if = __find_if::__fn{};
} // namespace __cpo
} // namespace ranges
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP_STD_VER >= 20
_LIBCPP_POP_MACROS
#endif // _LIBCPP___CXX03___ALGORITHM_RANGES_FIND_IF_H
|
