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
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
|
//===----------------------------------------------------------------------===//
//
// 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_LEXICOGRAPHICAL_COMPARE_H
#define _LIBCPP___CXX03___ALGORITHM_RANGES_LEXICOGRAPHICAL_COMPARE_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/__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 {
namespace __lexicographical_compare {
struct __fn {
template <class _Iter1, class _Sent1, class _Iter2, class _Sent2, class _Proj1, class _Proj2, class _Comp>
_LIBCPP_HIDE_FROM_ABI constexpr static bool __lexicographical_compare_impl(
_Iter1 __first1,
_Sent1 __last1,
_Iter2 __first2,
_Sent2 __last2,
_Comp& __comp,
_Proj1& __proj1,
_Proj2& __proj2) {
while (__first2 != __last2) {
if (__first1 == __last1 || std::invoke(__comp, std::invoke(__proj1, *__first1), std::invoke(__proj2, *__first2)))
return true;
if (std::invoke(__comp, std::invoke(__proj2, *__first2), std::invoke(__proj1, *__first1)))
return false;
++__first1;
++__first2;
}
return false;
}
template <input_iterator _Iter1,
sentinel_for<_Iter1> _Sent1,
input_iterator _Iter2,
sentinel_for<_Iter2> _Sent2,
class _Proj1 = identity,
class _Proj2 = identity,
indirect_strict_weak_order<projected<_Iter1, _Proj1>, projected<_Iter2, _Proj2>> _Comp = ranges::less>
[[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr bool operator()(
_Iter1 __first1,
_Sent1 __last1,
_Iter2 __first2,
_Sent2 __last2,
_Comp __comp = {},
_Proj1 __proj1 = {},
_Proj2 __proj2 = {}) const {
return __lexicographical_compare_impl(
std::move(__first1), std::move(__last1), std::move(__first2), std::move(__last2), __comp, __proj1, __proj2);
}
template <input_range _Range1,
input_range _Range2,
class _Proj1 = identity,
class _Proj2 = identity,
indirect_strict_weak_order<projected<iterator_t<_Range1>, _Proj1>, projected<iterator_t<_Range2>, _Proj2>>
_Comp = ranges::less>
[[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr bool operator()(
_Range1&& __range1, _Range2&& __range2, _Comp __comp = {}, _Proj1 __proj1 = {}, _Proj2 __proj2 = {}) const {
return __lexicographical_compare_impl(
ranges::begin(__range1),
ranges::end(__range1),
ranges::begin(__range2),
ranges::end(__range2),
__comp,
__proj1,
__proj2);
}
};
} // namespace __lexicographical_compare
inline namespace __cpo {
inline constexpr auto lexicographical_compare = __lexicographical_compare::__fn{};
} // namespace __cpo
} // namespace ranges
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP_STD_VER >= 20
_LIBCPP_POP_MACROS
#endif // _LIBCPP___CXX03___ALGORITHM_RANGES_LEXICOGRAPHICAL_COMPARE_H
|
