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
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
|
// -*-c++-*-
// vim: set ft=cpp:
/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
file LICENSE.rst or https://cmake.org/licensing for details. */
#pragma once
#include <iterator> // IWYU pragma: keep
#if __cplusplus < 201402L || defined(_MSVC_LANG) && _MSVC_LANG < 201402L
# include <initializer_list>
#endif
#if __cplusplus < 202002L || defined(_MSVC_LANG) && _MSVC_LANG < 202002L
# include <cstddef>
# include <type_traits>
#endif
namespace cm {
using std::begin;
using std::end;
#if __cplusplus < 201402L || defined(_MSVC_LANG) && _MSVC_LANG < 201402L
template <typename C>
# if defined(_MSC_VER) && _MSC_VER < 1900
inline auto cbegin(C const& c)
# else
inline constexpr auto cbegin(C const& c) noexcept(noexcept(std::begin(c)))
# endif
-> decltype(std::begin(c))
{
return std::begin(c);
}
template <typename C>
# if defined(_MSC_VER) && _MSC_VER < 1900
inline auto cend(C const& c)
# else
inline constexpr auto cend(C const& c) noexcept(noexcept(std::end(c)))
# endif
-> decltype(std::end(c))
{
return std::end(c);
}
template <typename C>
# if defined(_MSC_VER) && _MSC_VER < 1900
inline auto rbegin(C& c)
# else
inline constexpr auto rbegin(C& c)
# endif
-> decltype(c.rbegin())
{
return c.rbegin();
}
template <typename C>
# if defined(_MSC_VER) && _MSC_VER < 1900
inline auto rbegin(C const& c)
# else
inline constexpr auto rbegin(C const& c)
# endif
-> decltype(c.rbegin())
{
return c.rbegin();
}
template <typename T, std::size_t N>
# if defined(_MSC_VER) && _MSC_VER < 1900
inline std::reverse_iterator<T*> rbegin(T (&array)[N])
# else
inline constexpr std::reverse_iterator<T*> rbegin(T (&array)[N]) noexcept
# endif
{
return std::reverse_iterator<T*>(array + N);
}
template <typename T>
# if defined(_MSC_VER) && _MSC_VER < 1900
inline std::reverse_iterator<T const*> rbegin(std::initializer_list<T> il)
# else
inline constexpr std::reverse_iterator<T const*> rbegin(
std::initializer_list<T> il) noexcept
# endif
{
return std::reverse_iterator<T const*>(il.end());
}
template <typename C>
# if defined(_MSC_VER) && _MSC_VER < 1900
inline auto rend(C& c)
# else
inline constexpr auto rend(C& c)
# endif
-> decltype(c.rend())
{
return c.rend();
}
template <typename C>
# if defined(_MSC_VER) && _MSC_VER < 1900
inline auto rend(C const& c)
# else
inline constexpr auto rend(C const& c)
# endif
-> decltype(c.rend())
{
return c.rend();
}
template <typename T, std::size_t N>
# if defined(_MSC_VER) && _MSC_VER < 1900
inline std::reverse_iterator<T*> rend(T (&array)[N])
# else
inline constexpr std::reverse_iterator<T*> rend(T (&array)[N]) noexcept
# endif
{
return std::reverse_iterator<T*>(array);
}
template <typename T>
# if defined(_MSC_VER) && _MSC_VER < 1900
inline std::reverse_iterator<T const*> rend(std::initializer_list<T> il)
# else
inline constexpr std::reverse_iterator<T const*> rend(
std::initializer_list<T> il) noexcept
# endif
{
return std::reverse_iterator<T const*>(il.begin());
}
template <typename C>
# if defined(_MSC_VER) && _MSC_VER < 1900
inline auto crbegin(C const& c)
# else
inline constexpr auto crbegin(C const& c)
# endif
-> decltype(cm::rbegin(c))
{
return cm::rbegin(c);
}
template <typename C>
# if defined(_MSC_VER) && _MSC_VER < 1900
inline auto crend(C const& c)
# else
inline constexpr auto crend(C const& c)
# endif
-> decltype(cm::rend(c))
{
return cm::rend(c);
}
#else
using std::cbegin;
using std::cend;
using std::rbegin;
using std::rend;
using std::crbegin;
using std::crend;
#endif
#if __cplusplus < 201703L || defined(_MSVC_LANG) && _MSVC_LANG < 201703L
template <typename C>
# if defined(_MSC_VER) && _MSC_VER < 1900
inline auto size(C const& c)
# else
inline constexpr auto size(C const& c) noexcept(noexcept(c.size()))
# endif
-> decltype(c.size())
{
return c.size();
}
template <typename T, std::size_t N>
# if defined(_MSC_VER) && _MSC_VER < 1900
inline std::size_t size(T const (&)[N])
# else
inline constexpr std::size_t size(T const (&)[N]) noexcept
# endif
{
return N;
}
template <typename C>
# if defined(_MSC_VER) && _MSC_VER < 1900
inline auto empty(C const& c)
# else
inline constexpr auto empty(C const& c) noexcept(noexcept(c.empty()))
# endif
-> decltype(c.empty())
{
return c.empty();
}
template <typename T, std::size_t N>
# if defined(_MSC_VER) && _MSC_VER < 1900
inline bool empty(T const (&)[N])
# else
inline constexpr bool empty(T const (&)[N]) noexcept
# endif
{
return false;
}
template <typename E>
# if defined(_MSC_VER) && _MSC_VER < 1900
inline bool empty(std::initializer_list<E> il)
# else
inline constexpr bool empty(std::initializer_list<E> il) noexcept
# endif
{
return il.size() == 0;
}
template <typename C>
# if defined(_MSC_VER) && _MSC_VER < 1900
inline auto data(C& c) -> decltype(c.data())
# else
inline constexpr auto data(C& c) noexcept(noexcept(c.data()))
# endif
-> decltype(c.data())
{
return c.data();
}
template <typename C>
# if defined(_MSC_VER) && _MSC_VER < 1900
inline auto data(C const& c)
# else
inline constexpr auto data(C const& c) noexcept(noexcept(c.data()))
# endif
-> decltype(c.data())
{
return c.data();
}
template <typename T, std::size_t N>
# if defined(_MSC_VER) && _MSC_VER < 1900
inline T* data(T (&array)[N])
# else
inline constexpr T* data(T (&array)[N]) noexcept
# endif
{
return array;
}
template <typename E>
# if defined(_MSC_VER) && _MSC_VER < 1900
inline E const* data(std::initializer_list<E> il)
# else
inline constexpr E const* data(std::initializer_list<E> il) noexcept
# endif
{
return il.begin();
}
#else
using std::size;
using std::empty;
using std::data;
#endif
#if __cplusplus < 202002L || defined(_MSVC_LANG) && _MSVC_LANG < 202002L
template <typename C>
# if defined(_MSC_VER) && _MSC_VER < 1900
inline auto ssize(C const& c)
# else
inline constexpr auto ssize(C const& c)
# endif
-> typename std::common_type<
std::ptrdiff_t, typename std::make_signed<decltype(c.size())>::type>::type
{
using signed_type = typename std::make_signed<decltype(c.size())>::type;
using result_type =
typename std::common_type<std::ptrdiff_t, signed_type>::type;
return static_cast<result_type>(c.size());
}
template <typename T, std::ptrdiff_t N>
# if defined(_MSC_VER) && _MSC_VER < 1900
inline std::ptrdiff_t ssize(T const (&)[N])
# else
inline constexpr std::ptrdiff_t ssize(T const (&)[N]) noexcept
# endif
{
return N;
}
#else
using std::ssize;
#endif
} // namespace cm
|
