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c0ffa2ba | 1 | // C++11 <type_traits> -*- C++ -*- |
af13a7a6 | 2 | |
a5544970 | 3 | // Copyright (C) 2007-2019 Free Software Foundation, Inc. |
af13a7a6 BK |
4 | // |
5 | // This file is part of the GNU ISO C++ Library. This library is free | |
6 | // software; you can redistribute it and/or modify it under the | |
7 | // terms of the GNU General Public License as published by the | |
748086b7 | 8 | // Free Software Foundation; either version 3, or (at your option) |
af13a7a6 BK |
9 | // any later version. |
10 | ||
11 | // This library is distributed in the hope that it will be useful, | |
12 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | // GNU General Public License for more details. | |
15 | ||
748086b7 JJ |
16 | // Under Section 7 of GPL version 3, you are granted additional |
17 | // permissions described in the GCC Runtime Library Exception, version | |
18 | // 3.1, as published by the Free Software Foundation. | |
19 | ||
20 | // You should have received a copy of the GNU General Public License and | |
21 | // a copy of the GCC Runtime Library Exception along with this program; | |
22 | // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
23 | // <http://www.gnu.org/licenses/>. | |
af13a7a6 BK |
24 | |
25 | /** @file include/type_traits | |
26 | * This is a Standard C++ Library header. | |
27 | */ | |
28 | ||
4514bed6 BK |
29 | #ifndef _GLIBCXX_TYPE_TRAITS |
30 | #define _GLIBCXX_TYPE_TRAITS 1 | |
af13a7a6 BK |
31 | |
32 | #pragma GCC system_header | |
33 | ||
734f5023 | 34 | #if __cplusplus < 201103L |
ab65a4c7 | 35 | # include <bits/c++0x_warning.h> |
57317d2a | 36 | #else |
af13a7a6 | 37 | |
8fc81078 | 38 | #include <bits/c++config.h> |
e133ace8 | 39 | |
21e2806a JW |
40 | namespace std _GLIBCXX_VISIBILITY(default) |
41 | { | |
42 | _GLIBCXX_BEGIN_NAMESPACE_VERSION | |
43 | ||
8e32aa11 | 44 | /** |
c0ffa2ba | 45 | * @defgroup metaprogramming Metaprogramming |
13901e4b JW |
46 | * @ingroup utilities |
47 | * | |
48 | * Template utilities for compile-time introspection and modification, | |
49 | * including type classification traits, type property inspection traits | |
50 | * and type transformation traits. | |
51 | * | |
5b9daa7e BK |
52 | * @{ |
53 | */ | |
ac65b7d2 DK |
54 | |
55 | /// integral_constant | |
56 | template<typename _Tp, _Tp __v> | |
57 | struct integral_constant | |
58 | { | |
59 | static constexpr _Tp value = __v; | |
60 | typedef _Tp value_type; | |
61 | typedef integral_constant<_Tp, __v> type; | |
352111c5 | 62 | constexpr operator value_type() const noexcept { return value; } |
db113eda | 63 | #if __cplusplus > 201103L |
a15f7cb8 ESR |
64 | |
65 | #define __cpp_lib_integral_constant_callable 201304 | |
66 | ||
352111c5 | 67 | constexpr value_type operator()() const noexcept { return value; } |
db113eda | 68 | #endif |
ac65b7d2 | 69 | }; |
33ac58d5 | 70 | |
c0ffa2ba BK |
71 | template<typename _Tp, _Tp __v> |
72 | constexpr _Tp integral_constant<_Tp, __v>::value; | |
73 | ||
13901e4b | 74 | /// The type used as a compile-time boolean with true value. |
ac65b7d2 DK |
75 | typedef integral_constant<bool, true> true_type; |
76 | ||
13901e4b | 77 | /// The type used as a compile-time boolean with false value. |
ac65b7d2 DK |
78 | typedef integral_constant<bool, false> false_type; |
79 | ||
f6b640be JW |
80 | template<bool __v> |
81 | using __bool_constant = integral_constant<bool, __v>; | |
82 | ||
46ba1281 | 83 | #if __cplusplus > 201402L |
f9badf71 | 84 | # define __cpp_lib_bool_constant 201505 |
46ba1281 JW |
85 | template<bool __v> |
86 | using bool_constant = integral_constant<bool, __v>; | |
87 | #endif | |
88 | ||
123c516a | 89 | // Meta programming helper types. |
53dc5044 | 90 | |
123c516a PC |
91 | template<bool, typename, typename> |
92 | struct conditional; | |
53dc5044 | 93 | |
608a080c AP |
94 | template <typename _Type> |
95 | struct __type_identity { | |
96 | using type = _Type; | |
97 | }; | |
98 | ||
dd7b175e | 99 | template<typename...> |
123c516a PC |
100 | struct __or_; |
101 | ||
ac65b7d2 DK |
102 | template<> |
103 | struct __or_<> | |
104 | : public false_type | |
105 | { }; | |
106 | ||
dd7b175e PC |
107 | template<typename _B1> |
108 | struct __or_<_B1> | |
109 | : public _B1 | |
110 | { }; | |
111 | ||
123c516a PC |
112 | template<typename _B1, typename _B2> |
113 | struct __or_<_B1, _B2> | |
114 | : public conditional<_B1::value, _B1, _B2>::type | |
115 | { }; | |
116 | ||
117 | template<typename _B1, typename _B2, typename _B3, typename... _Bn> | |
118 | struct __or_<_B1, _B2, _B3, _Bn...> | |
119 | : public conditional<_B1::value, _B1, __or_<_B2, _B3, _Bn...>>::type | |
120 | { }; | |
53dc5044 | 121 | |
dd7b175e | 122 | template<typename...> |
123c516a | 123 | struct __and_; |
53dc5044 | 124 | |
ac65b7d2 DK |
125 | template<> |
126 | struct __and_<> | |
127 | : public true_type | |
128 | { }; | |
129 | ||
dd7b175e PC |
130 | template<typename _B1> |
131 | struct __and_<_B1> | |
132 | : public _B1 | |
133 | { }; | |
134 | ||
123c516a PC |
135 | template<typename _B1, typename _B2> |
136 | struct __and_<_B1, _B2> | |
137 | : public conditional<_B1::value, _B2, _B1>::type | |
138 | { }; | |
139 | ||
140 | template<typename _B1, typename _B2, typename _B3, typename... _Bn> | |
141 | struct __and_<_B1, _B2, _B3, _Bn...> | |
142 | : public conditional<_B1::value, __and_<_B2, _B3, _Bn...>, _B1>::type | |
143 | { }; | |
144 | ||
145 | template<typename _Pp> | |
146 | struct __not_ | |
4b9840f2 | 147 | : public __bool_constant<!bool(_Pp::value)> |
123c516a PC |
148 | { }; |
149 | ||
4b9840f2 | 150 | #if __cplusplus >= 201703L |
c3a6648b | 151 | |
b655b8fc JW |
152 | template<typename... _Bn> |
153 | inline constexpr bool __or_v = __or_<_Bn...>::value; | |
154 | template<typename... _Bn> | |
155 | inline constexpr bool __and_v = __and_<_Bn...>::value; | |
156 | ||
068c8ac1 | 157 | #define __cpp_lib_logical_traits 201510 |
c3a6648b VV |
158 | |
159 | template<typename... _Bn> | |
160 | struct conjunction | |
161 | : __and_<_Bn...> | |
162 | { }; | |
163 | ||
164 | template<typename... _Bn> | |
165 | struct disjunction | |
166 | : __or_<_Bn...> | |
167 | { }; | |
168 | ||
169 | template<typename _Pp> | |
170 | struct negation | |
171 | : __not_<_Pp> | |
172 | { }; | |
137422c8 VV |
173 | |
174 | template<typename... _Bn> | |
4b9840f2 | 175 | inline constexpr bool conjunction_v = conjunction<_Bn...>::value; |
42183d03 | 176 | |
137422c8 | 177 | template<typename... _Bn> |
4b9840f2 | 178 | inline constexpr bool disjunction_v = disjunction<_Bn...>::value; |
42183d03 | 179 | |
137422c8 | 180 | template<typename _Pp> |
4b9840f2 | 181 | inline constexpr bool negation_v = negation<_Pp>::value; |
137422c8 | 182 | |
4b9840f2 | 183 | #endif // C++17 |
c3a6648b | 184 | |
608a080c AP |
185 | // Forward declarations |
186 | template<typename> | |
187 | struct is_reference; | |
188 | template<typename> | |
189 | struct is_function; | |
190 | template<typename> | |
191 | struct is_void; | |
192 | template<typename> | |
193 | struct __is_array_unknown_bounds; | |
194 | ||
195 | // Helper functions that return false_type for incomplete classes, | |
196 | // incomplete unions and arrays of known bound from those. | |
197 | ||
198 | template <typename _T, size_t = sizeof(_T)> | |
199 | constexpr true_type __is_complete_or_unbounded(__type_identity<_T>) | |
200 | { return {}; } | |
201 | ||
202 | template <typename _TypeIdentity, | |
203 | typename _NestedType = typename _TypeIdentity::type> | |
204 | constexpr typename __or_< | |
205 | is_reference<_NestedType>, | |
206 | is_function<_NestedType>, | |
207 | is_void<_NestedType>, | |
208 | __is_array_unknown_bounds<_NestedType> | |
209 | >::type __is_complete_or_unbounded(_TypeIdentity) | |
210 | { return {}; } | |
211 | ||
b3618b71 DK |
212 | // For several sfinae-friendly trait implementations we transport both the |
213 | // result information (as the member type) and the failure information (no | |
214 | // member type). This is very similar to std::enable_if, but we cannot use | |
215 | // them, because we need to derive from them as an implementation detail. | |
216 | ||
217 | template<typename _Tp> | |
218 | struct __success_type | |
219 | { typedef _Tp type; }; | |
220 | ||
221 | struct __failure_type | |
222 | { }; | |
223 | ||
c0ffa2ba | 224 | // Primary type categories. |
123c516a | 225 | |
53dc5044 PC |
226 | template<typename> |
227 | struct remove_cv; | |
228 | ||
229 | template<typename> | |
230 | struct __is_void_helper | |
231 | : public false_type { }; | |
53dc5044 | 232 | |
123c516a PC |
233 | template<> |
234 | struct __is_void_helper<void> | |
235 | : public true_type { }; | |
53dc5044 PC |
236 | |
237 | /// is_void | |
238 | template<typename _Tp> | |
239 | struct is_void | |
82b12c4b | 240 | : public __is_void_helper<typename remove_cv<_Tp>::type>::type |
53dc5044 PC |
241 | { }; |
242 | ||
243 | template<typename> | |
244 | struct __is_integral_helper | |
245 | : public false_type { }; | |
123c516a PC |
246 | |
247 | template<> | |
248 | struct __is_integral_helper<bool> | |
249 | : public true_type { }; | |
33ac58d5 | 250 | |
123c516a PC |
251 | template<> |
252 | struct __is_integral_helper<char> | |
253 | : public true_type { }; | |
254 | ||
255 | template<> | |
256 | struct __is_integral_helper<signed char> | |
257 | : public true_type { }; | |
258 | ||
259 | template<> | |
260 | struct __is_integral_helper<unsigned char> | |
261 | : public true_type { }; | |
262 | ||
53dc5044 | 263 | #ifdef _GLIBCXX_USE_WCHAR_T |
123c516a PC |
264 | template<> |
265 | struct __is_integral_helper<wchar_t> | |
266 | : public true_type { }; | |
53dc5044 | 267 | #endif |
123c516a | 268 | |
c124af93 TH |
269 | #ifdef _GLIBCXX_USE_CHAR8_T |
270 | template<> | |
271 | struct __is_integral_helper<char8_t> | |
272 | : public true_type { }; | |
273 | #endif | |
274 | ||
123c516a PC |
275 | template<> |
276 | struct __is_integral_helper<char16_t> | |
277 | : public true_type { }; | |
278 | ||
279 | template<> | |
280 | struct __is_integral_helper<char32_t> | |
281 | : public true_type { }; | |
282 | ||
283 | template<> | |
284 | struct __is_integral_helper<short> | |
285 | : public true_type { }; | |
286 | ||
287 | template<> | |
288 | struct __is_integral_helper<unsigned short> | |
289 | : public true_type { }; | |
290 | ||
291 | template<> | |
292 | struct __is_integral_helper<int> | |
293 | : public true_type { }; | |
294 | ||
295 | template<> | |
296 | struct __is_integral_helper<unsigned int> | |
297 | : public true_type { }; | |
298 | ||
299 | template<> | |
300 | struct __is_integral_helper<long> | |
301 | : public true_type { }; | |
302 | ||
303 | template<> | |
304 | struct __is_integral_helper<unsigned long> | |
305 | : public true_type { }; | |
306 | ||
307 | template<> | |
308 | struct __is_integral_helper<long long> | |
309 | : public true_type { }; | |
310 | ||
311 | template<> | |
312 | struct __is_integral_helper<unsigned long long> | |
313 | : public true_type { }; | |
53dc5044 | 314 | |
78a7c317 DD |
315 | // Conditionalizing on __STRICT_ANSI__ here will break any port that |
316 | // uses one of these types for size_t. | |
317 | #if defined(__GLIBCXX_TYPE_INT_N_0) | |
6d585f01 | 318 | template<> |
78a7c317 | 319 | struct __is_integral_helper<__GLIBCXX_TYPE_INT_N_0> |
6d585f01 PC |
320 | : public true_type { }; |
321 | ||
322 | template<> | |
78a7c317 DD |
323 | struct __is_integral_helper<unsigned __GLIBCXX_TYPE_INT_N_0> |
324 | : public true_type { }; | |
325 | #endif | |
326 | #if defined(__GLIBCXX_TYPE_INT_N_1) | |
327 | template<> | |
328 | struct __is_integral_helper<__GLIBCXX_TYPE_INT_N_1> | |
329 | : public true_type { }; | |
330 | ||
331 | template<> | |
332 | struct __is_integral_helper<unsigned __GLIBCXX_TYPE_INT_N_1> | |
333 | : public true_type { }; | |
334 | #endif | |
335 | #if defined(__GLIBCXX_TYPE_INT_N_2) | |
336 | template<> | |
337 | struct __is_integral_helper<__GLIBCXX_TYPE_INT_N_2> | |
338 | : public true_type { }; | |
339 | ||
340 | template<> | |
341 | struct __is_integral_helper<unsigned __GLIBCXX_TYPE_INT_N_2> | |
342 | : public true_type { }; | |
343 | #endif | |
344 | #if defined(__GLIBCXX_TYPE_INT_N_3) | |
345 | template<> | |
346 | struct __is_integral_helper<__GLIBCXX_TYPE_INT_N_3> | |
347 | : public true_type { }; | |
348 | ||
349 | template<> | |
350 | struct __is_integral_helper<unsigned __GLIBCXX_TYPE_INT_N_3> | |
6d585f01 PC |
351 | : public true_type { }; |
352 | #endif | |
353 | ||
53dc5044 PC |
354 | /// is_integral |
355 | template<typename _Tp> | |
356 | struct is_integral | |
82b12c4b | 357 | : public __is_integral_helper<typename remove_cv<_Tp>::type>::type |
53dc5044 PC |
358 | { }; |
359 | ||
360 | template<typename> | |
361 | struct __is_floating_point_helper | |
362 | : public false_type { }; | |
123c516a PC |
363 | |
364 | template<> | |
365 | struct __is_floating_point_helper<float> | |
366 | : public true_type { }; | |
367 | ||
368 | template<> | |
369 | struct __is_floating_point_helper<double> | |
370 | : public true_type { }; | |
371 | ||
372 | template<> | |
373 | struct __is_floating_point_helper<long double> | |
374 | : public true_type { }; | |
53dc5044 | 375 | |
6d585f01 PC |
376 | #if !defined(__STRICT_ANSI__) && defined(_GLIBCXX_USE_FLOAT128) |
377 | template<> | |
378 | struct __is_floating_point_helper<__float128> | |
379 | : public true_type { }; | |
380 | #endif | |
381 | ||
53dc5044 PC |
382 | /// is_floating_point |
383 | template<typename _Tp> | |
384 | struct is_floating_point | |
82b12c4b | 385 | : public __is_floating_point_helper<typename remove_cv<_Tp>::type>::type |
53dc5044 PC |
386 | { }; |
387 | ||
388 | /// is_array | |
389 | template<typename> | |
390 | struct is_array | |
391 | : public false_type { }; | |
392 | ||
393 | template<typename _Tp, std::size_t _Size> | |
394 | struct is_array<_Tp[_Size]> | |
395 | : public true_type { }; | |
396 | ||
397 | template<typename _Tp> | |
398 | struct is_array<_Tp[]> | |
399 | : public true_type { }; | |
400 | ||
401 | template<typename> | |
402 | struct __is_pointer_helper | |
403 | : public false_type { }; | |
123c516a PC |
404 | |
405 | template<typename _Tp> | |
406 | struct __is_pointer_helper<_Tp*> | |
407 | : public true_type { }; | |
53dc5044 PC |
408 | |
409 | /// is_pointer | |
410 | template<typename _Tp> | |
411 | struct is_pointer | |
82b12c4b | 412 | : public __is_pointer_helper<typename remove_cv<_Tp>::type>::type |
53dc5044 PC |
413 | { }; |
414 | ||
123c516a PC |
415 | /// is_lvalue_reference |
416 | template<typename> | |
417 | struct is_lvalue_reference | |
418 | : public false_type { }; | |
419 | ||
53dc5044 | 420 | template<typename _Tp> |
123c516a PC |
421 | struct is_lvalue_reference<_Tp&> |
422 | : public true_type { }; | |
423 | ||
424 | /// is_rvalue_reference | |
425 | template<typename> | |
426 | struct is_rvalue_reference | |
427 | : public false_type { }; | |
53dc5044 | 428 | |
53dc5044 | 429 | template<typename _Tp> |
123c516a PC |
430 | struct is_rvalue_reference<_Tp&&> |
431 | : public true_type { }; | |
432 | ||
53dc5044 PC |
433 | template<typename> |
434 | struct __is_member_object_pointer_helper | |
435 | : public false_type { }; | |
123c516a PC |
436 | |
437 | template<typename _Tp, typename _Cp> | |
438 | struct __is_member_object_pointer_helper<_Tp _Cp::*> | |
c01f9216 | 439 | : public __not_<is_function<_Tp>>::type { }; |
53dc5044 PC |
440 | |
441 | /// is_member_object_pointer | |
442 | template<typename _Tp> | |
443 | struct is_member_object_pointer | |
82b12c4b FD |
444 | : public __is_member_object_pointer_helper< |
445 | typename remove_cv<_Tp>::type>::type | |
53dc5044 PC |
446 | { }; |
447 | ||
448 | template<typename> | |
449 | struct __is_member_function_pointer_helper | |
450 | : public false_type { }; | |
123c516a PC |
451 | |
452 | template<typename _Tp, typename _Cp> | |
453 | struct __is_member_function_pointer_helper<_Tp _Cp::*> | |
c01f9216 | 454 | : public is_function<_Tp>::type { }; |
53dc5044 PC |
455 | |
456 | /// is_member_function_pointer | |
457 | template<typename _Tp> | |
458 | struct is_member_function_pointer | |
82b12c4b FD |
459 | : public __is_member_function_pointer_helper< |
460 | typename remove_cv<_Tp>::type>::type | |
53dc5044 PC |
461 | { }; |
462 | ||
463 | /// is_enum | |
464 | template<typename _Tp> | |
465 | struct is_enum | |
466 | : public integral_constant<bool, __is_enum(_Tp)> | |
467 | { }; | |
468 | ||
469 | /// is_union | |
470 | template<typename _Tp> | |
471 | struct is_union | |
472 | : public integral_constant<bool, __is_union(_Tp)> | |
473 | { }; | |
474 | ||
475 | /// is_class | |
476 | template<typename _Tp> | |
477 | struct is_class | |
478 | : public integral_constant<bool, __is_class(_Tp)> | |
479 | { }; | |
480 | ||
481 | /// is_function | |
482 | template<typename> | |
483 | struct is_function | |
484 | : public false_type { }; | |
123c516a | 485 | |
51dc6603 JM |
486 | template<typename _Res, typename... _ArgTypes _GLIBCXX_NOEXCEPT_PARM> |
487 | struct is_function<_Res(_ArgTypes...) _GLIBCXX_NOEXCEPT_QUAL> | |
53dc5044 | 488 | : public true_type { }; |
123c516a | 489 | |
51dc6603 JM |
490 | template<typename _Res, typename... _ArgTypes _GLIBCXX_NOEXCEPT_PARM> |
491 | struct is_function<_Res(_ArgTypes...) & _GLIBCXX_NOEXCEPT_QUAL> | |
89898034 DK |
492 | : public true_type { }; |
493 | ||
51dc6603 JM |
494 | template<typename _Res, typename... _ArgTypes _GLIBCXX_NOEXCEPT_PARM> |
495 | struct is_function<_Res(_ArgTypes...) && _GLIBCXX_NOEXCEPT_QUAL> | |
89898034 DK |
496 | : public true_type { }; |
497 | ||
51dc6603 JM |
498 | template<typename _Res, typename... _ArgTypes _GLIBCXX_NOEXCEPT_PARM> |
499 | struct is_function<_Res(_ArgTypes......) _GLIBCXX_NOEXCEPT_QUAL> | |
53dc5044 | 500 | : public true_type { }; |
123c516a | 501 | |
51dc6603 JM |
502 | template<typename _Res, typename... _ArgTypes _GLIBCXX_NOEXCEPT_PARM> |
503 | struct is_function<_Res(_ArgTypes......) & _GLIBCXX_NOEXCEPT_QUAL> | |
89898034 DK |
504 | : public true_type { }; |
505 | ||
51dc6603 JM |
506 | template<typename _Res, typename... _ArgTypes _GLIBCXX_NOEXCEPT_PARM> |
507 | struct is_function<_Res(_ArgTypes......) && _GLIBCXX_NOEXCEPT_QUAL> | |
89898034 DK |
508 | : public true_type { }; |
509 | ||
51dc6603 JM |
510 | template<typename _Res, typename... _ArgTypes _GLIBCXX_NOEXCEPT_PARM> |
511 | struct is_function<_Res(_ArgTypes...) const _GLIBCXX_NOEXCEPT_QUAL> | |
53dc5044 | 512 | : public true_type { }; |
123c516a | 513 | |
51dc6603 JM |
514 | template<typename _Res, typename... _ArgTypes _GLIBCXX_NOEXCEPT_PARM> |
515 | struct is_function<_Res(_ArgTypes...) const & _GLIBCXX_NOEXCEPT_QUAL> | |
89898034 DK |
516 | : public true_type { }; |
517 | ||
51dc6603 JM |
518 | template<typename _Res, typename... _ArgTypes _GLIBCXX_NOEXCEPT_PARM> |
519 | struct is_function<_Res(_ArgTypes...) const && _GLIBCXX_NOEXCEPT_QUAL> | |
89898034 DK |
520 | : public true_type { }; |
521 | ||
51dc6603 JM |
522 | template<typename _Res, typename... _ArgTypes _GLIBCXX_NOEXCEPT_PARM> |
523 | struct is_function<_Res(_ArgTypes......) const _GLIBCXX_NOEXCEPT_QUAL> | |
53dc5044 | 524 | : public true_type { }; |
123c516a | 525 | |
51dc6603 JM |
526 | template<typename _Res, typename... _ArgTypes _GLIBCXX_NOEXCEPT_PARM> |
527 | struct is_function<_Res(_ArgTypes......) const & _GLIBCXX_NOEXCEPT_QUAL> | |
89898034 DK |
528 | : public true_type { }; |
529 | ||
51dc6603 JM |
530 | template<typename _Res, typename... _ArgTypes _GLIBCXX_NOEXCEPT_PARM> |
531 | struct is_function<_Res(_ArgTypes......) const && _GLIBCXX_NOEXCEPT_QUAL> | |
89898034 DK |
532 | : public true_type { }; |
533 | ||
51dc6603 JM |
534 | template<typename _Res, typename... _ArgTypes _GLIBCXX_NOEXCEPT_PARM> |
535 | struct is_function<_Res(_ArgTypes...) volatile _GLIBCXX_NOEXCEPT_QUAL> | |
53dc5044 | 536 | : public true_type { }; |
123c516a | 537 | |
51dc6603 JM |
538 | template<typename _Res, typename... _ArgTypes _GLIBCXX_NOEXCEPT_PARM> |
539 | struct is_function<_Res(_ArgTypes...) volatile & _GLIBCXX_NOEXCEPT_QUAL> | |
89898034 DK |
540 | : public true_type { }; |
541 | ||
51dc6603 JM |
542 | template<typename _Res, typename... _ArgTypes _GLIBCXX_NOEXCEPT_PARM> |
543 | struct is_function<_Res(_ArgTypes...) volatile && _GLIBCXX_NOEXCEPT_QUAL> | |
89898034 DK |
544 | : public true_type { }; |
545 | ||
51dc6603 JM |
546 | template<typename _Res, typename... _ArgTypes _GLIBCXX_NOEXCEPT_PARM> |
547 | struct is_function<_Res(_ArgTypes......) volatile _GLIBCXX_NOEXCEPT_QUAL> | |
53dc5044 | 548 | : public true_type { }; |
123c516a | 549 | |
51dc6603 JM |
550 | template<typename _Res, typename... _ArgTypes _GLIBCXX_NOEXCEPT_PARM> |
551 | struct is_function<_Res(_ArgTypes......) volatile & _GLIBCXX_NOEXCEPT_QUAL> | |
89898034 DK |
552 | : public true_type { }; |
553 | ||
51dc6603 JM |
554 | template<typename _Res, typename... _ArgTypes _GLIBCXX_NOEXCEPT_PARM> |
555 | struct is_function<_Res(_ArgTypes......) volatile && _GLIBCXX_NOEXCEPT_QUAL> | |
89898034 DK |
556 | : public true_type { }; |
557 | ||
51dc6603 JM |
558 | template<typename _Res, typename... _ArgTypes _GLIBCXX_NOEXCEPT_PARM> |
559 | struct is_function<_Res(_ArgTypes...) const volatile _GLIBCXX_NOEXCEPT_QUAL> | |
53dc5044 | 560 | : public true_type { }; |
123c516a | 561 | |
51dc6603 JM |
562 | template<typename _Res, typename... _ArgTypes _GLIBCXX_NOEXCEPT_PARM> |
563 | struct is_function<_Res(_ArgTypes...) const volatile & _GLIBCXX_NOEXCEPT_QUAL> | |
89898034 DK |
564 | : public true_type { }; |
565 | ||
51dc6603 JM |
566 | template<typename _Res, typename... _ArgTypes _GLIBCXX_NOEXCEPT_PARM> |
567 | struct is_function<_Res(_ArgTypes...) const volatile && _GLIBCXX_NOEXCEPT_QUAL> | |
89898034 DK |
568 | : public true_type { }; |
569 | ||
51dc6603 JM |
570 | template<typename _Res, typename... _ArgTypes _GLIBCXX_NOEXCEPT_PARM> |
571 | struct is_function<_Res(_ArgTypes......) const volatile _GLIBCXX_NOEXCEPT_QUAL> | |
53dc5044 PC |
572 | : public true_type { }; |
573 | ||
51dc6603 JM |
574 | template<typename _Res, typename... _ArgTypes _GLIBCXX_NOEXCEPT_PARM> |
575 | struct is_function<_Res(_ArgTypes......) const volatile & _GLIBCXX_NOEXCEPT_QUAL> | |
89898034 DK |
576 | : public true_type { }; |
577 | ||
51dc6603 JM |
578 | template<typename _Res, typename... _ArgTypes _GLIBCXX_NOEXCEPT_PARM> |
579 | struct is_function<_Res(_ArgTypes......) const volatile && _GLIBCXX_NOEXCEPT_QUAL> | |
89898034 DK |
580 | : public true_type { }; |
581 | ||
a15f7cb8 ESR |
582 | #define __cpp_lib_is_null_pointer 201309 |
583 | ||
1e673415 | 584 | template<typename> |
aa940ab5 | 585 | struct __is_null_pointer_helper |
1e673415 | 586 | : public false_type { }; |
123c516a PC |
587 | |
588 | template<> | |
aa940ab5 | 589 | struct __is_null_pointer_helper<std::nullptr_t> |
123c516a | 590 | : public true_type { }; |
1e673415 | 591 | |
aa940ab5 PC |
592 | /// is_null_pointer (LWG 2247). |
593 | template<typename _Tp> | |
594 | struct is_null_pointer | |
595 | : public __is_null_pointer_helper<typename remove_cv<_Tp>::type>::type | |
596 | { }; | |
597 | ||
598 | /// __is_nullptr_t (extension). | |
1e673415 PC |
599 | template<typename _Tp> |
600 | struct __is_nullptr_t | |
aa940ab5 | 601 | : public is_null_pointer<_Tp> |
1e673415 PC |
602 | { }; |
603 | ||
c0ffa2ba | 604 | // Composite type categories. |
123c516a PC |
605 | |
606 | /// is_reference | |
607 | template<typename _Tp> | |
608 | struct is_reference | |
609 | : public __or_<is_lvalue_reference<_Tp>, | |
610 | is_rvalue_reference<_Tp>>::type | |
611 | { }; | |
612 | ||
53dc5044 PC |
613 | /// is_arithmetic |
614 | template<typename _Tp> | |
615 | struct is_arithmetic | |
123c516a | 616 | : public __or_<is_integral<_Tp>, is_floating_point<_Tp>>::type |
53dc5044 PC |
617 | { }; |
618 | ||
619 | /// is_fundamental | |
620 | template<typename _Tp> | |
621 | struct is_fundamental | |
aa940ab5 PC |
622 | : public __or_<is_arithmetic<_Tp>, is_void<_Tp>, |
623 | is_null_pointer<_Tp>>::type | |
53dc5044 PC |
624 | { }; |
625 | ||
626 | /// is_object | |
627 | template<typename _Tp> | |
628 | struct is_object | |
123c516a PC |
629 | : public __not_<__or_<is_function<_Tp>, is_reference<_Tp>, |
630 | is_void<_Tp>>>::type | |
53dc5044 PC |
631 | { }; |
632 | ||
123c516a | 633 | template<typename> |
53dc5044 PC |
634 | struct is_member_pointer; |
635 | ||
636 | /// is_scalar | |
637 | template<typename _Tp> | |
638 | struct is_scalar | |
123c516a | 639 | : public __or_<is_arithmetic<_Tp>, is_enum<_Tp>, is_pointer<_Tp>, |
aa940ab5 | 640 | is_member_pointer<_Tp>, is_null_pointer<_Tp>>::type |
53dc5044 PC |
641 | { }; |
642 | ||
643 | /// is_compound | |
644 | template<typename _Tp> | |
645 | struct is_compound | |
c01f9216 | 646 | : public __not_<is_fundamental<_Tp>>::type { }; |
53dc5044 | 647 | |
53dc5044 PC |
648 | template<typename _Tp> |
649 | struct __is_member_pointer_helper | |
650 | : public false_type { }; | |
123c516a PC |
651 | |
652 | template<typename _Tp, typename _Cp> | |
653 | struct __is_member_pointer_helper<_Tp _Cp::*> | |
654 | : public true_type { }; | |
53dc5044 | 655 | |
13901e4b | 656 | /// is_member_pointer |
53dc5044 | 657 | template<typename _Tp> |
123c516a | 658 | struct is_member_pointer |
82b12c4b | 659 | : public __is_member_pointer_helper<typename remove_cv<_Tp>::type>::type |
53dc5044 PC |
660 | { }; |
661 | ||
89898034 DK |
662 | // Utility to detect referenceable types ([defns.referenceable]). |
663 | ||
664 | template<typename _Tp> | |
665 | struct __is_referenceable | |
666 | : public __or_<is_object<_Tp>, is_reference<_Tp>>::type | |
667 | { }; | |
668 | ||
c6ab9061 JW |
669 | template<typename _Res, typename... _Args _GLIBCXX_NOEXCEPT_PARM> |
670 | struct __is_referenceable<_Res(_Args...) _GLIBCXX_NOEXCEPT_QUAL> | |
89898034 DK |
671 | : public true_type |
672 | { }; | |
673 | ||
c6ab9061 JW |
674 | template<typename _Res, typename... _Args _GLIBCXX_NOEXCEPT_PARM> |
675 | struct __is_referenceable<_Res(_Args......) _GLIBCXX_NOEXCEPT_QUAL> | |
89898034 DK |
676 | : public true_type |
677 | { }; | |
678 | ||
c0ffa2ba | 679 | // Type properties. |
123c516a | 680 | |
53dc5044 PC |
681 | /// is_const |
682 | template<typename> | |
683 | struct is_const | |
684 | : public false_type { }; | |
685 | ||
686 | template<typename _Tp> | |
687 | struct is_const<_Tp const> | |
688 | : public true_type { }; | |
33ac58d5 | 689 | |
53dc5044 PC |
690 | /// is_volatile |
691 | template<typename> | |
692 | struct is_volatile | |
693 | : public false_type { }; | |
694 | ||
695 | template<typename _Tp> | |
696 | struct is_volatile<_Tp volatile> | |
697 | : public true_type { }; | |
698 | ||
123c516a PC |
699 | /// is_trivial |
700 | template<typename _Tp> | |
701 | struct is_trivial | |
702 | : public integral_constant<bool, __is_trivial(_Tp)> | |
608a080c AP |
703 | { |
704 | static_assert(std::__is_complete_or_unbounded(__type_identity<_Tp>{}), | |
705 | "template argument must be a complete class or an unbounded array"); | |
706 | }; | |
123c516a | 707 | |
f5e523b7 VV |
708 | // is_trivially_copyable |
709 | template<typename _Tp> | |
710 | struct is_trivially_copyable | |
711 | : public integral_constant<bool, __is_trivially_copyable(_Tp)> | |
608a080c AP |
712 | { |
713 | static_assert(std::__is_complete_or_unbounded(__type_identity<_Tp>{}), | |
714 | "template argument must be a complete class or an unbounded array"); | |
715 | }; | |
123c516a PC |
716 | |
717 | /// is_standard_layout | |
718 | template<typename _Tp> | |
719 | struct is_standard_layout | |
720 | : public integral_constant<bool, __is_standard_layout(_Tp)> | |
608a080c AP |
721 | { |
722 | static_assert(std::__is_complete_or_unbounded(__type_identity<_Tp>{}), | |
723 | "template argument must be a complete class or an unbounded array"); | |
724 | }; | |
123c516a PC |
725 | |
726 | /// is_pod | |
727 | // Could use is_standard_layout && is_trivial instead of the builtin. | |
728 | template<typename _Tp> | |
729 | struct is_pod | |
730 | : public integral_constant<bool, __is_pod(_Tp)> | |
608a080c AP |
731 | { |
732 | static_assert(std::__is_complete_or_unbounded(__type_identity<_Tp>{}), | |
733 | "template argument must be a complete class or an unbounded array"); | |
734 | }; | |
123c516a PC |
735 | |
736 | /// is_literal_type | |
737 | template<typename _Tp> | |
738 | struct is_literal_type | |
739 | : public integral_constant<bool, __is_literal_type(_Tp)> | |
608a080c AP |
740 | { |
741 | static_assert(std::__is_complete_or_unbounded(__type_identity<_Tp>{}), | |
742 | "template argument must be a complete class or an unbounded array"); | |
743 | }; | |
123c516a | 744 | |
53dc5044 PC |
745 | /// is_empty |
746 | template<typename _Tp> | |
747 | struct is_empty | |
748 | : public integral_constant<bool, __is_empty(_Tp)> | |
209ee624 | 749 | { }; |
53dc5044 PC |
750 | |
751 | /// is_polymorphic | |
752 | template<typename _Tp> | |
753 | struct is_polymorphic | |
754 | : public integral_constant<bool, __is_polymorphic(_Tp)> | |
209ee624 | 755 | { }; |
53dc5044 | 756 | |
4db7fcb9 ESR |
757 | #if __cplusplus >= 201402L |
758 | #define __cpp_lib_is_final 201402L | |
759 | /// is_final | |
760 | template<typename _Tp> | |
761 | struct is_final | |
762 | : public integral_constant<bool, __is_final(_Tp)> | |
209ee624 | 763 | { }; |
4db7fcb9 ESR |
764 | #endif |
765 | ||
53dc5044 PC |
766 | /// is_abstract |
767 | template<typename _Tp> | |
768 | struct is_abstract | |
769 | : public integral_constant<bool, __is_abstract(_Tp)> | |
209ee624 | 770 | { }; |
53dc5044 | 771 | |
123c516a | 772 | template<typename _Tp, |
6a4b1a00 | 773 | bool = is_arithmetic<_Tp>::value> |
123c516a PC |
774 | struct __is_signed_helper |
775 | : public false_type { }; | |
776 | ||
53dc5044 | 777 | template<typename _Tp> |
6a4b1a00 PC |
778 | struct __is_signed_helper<_Tp, true> |
779 | : public integral_constant<bool, _Tp(-1) < _Tp(0)> | |
53dc5044 PC |
780 | { }; |
781 | ||
123c516a | 782 | /// is_signed |
53dc5044 | 783 | template<typename _Tp> |
123c516a | 784 | struct is_signed |
82b12c4b | 785 | : public __is_signed_helper<_Tp>::type |
123c516a PC |
786 | { }; |
787 | ||
788 | /// is_unsigned | |
789 | template<typename _Tp> | |
790 | struct is_unsigned | |
f7632193 | 791 | : public __and_<is_arithmetic<_Tp>, __not_<is_signed<_Tp>>> |
123c516a PC |
792 | { }; |
793 | ||
794 | ||
c0ffa2ba | 795 | // Destructible and constructible type properties. |
123c516a | 796 | |
13901e4b JW |
797 | /** |
798 | * @brief Utility to simplify expressions used in unevaluated operands | |
799 | * @ingroup utilities | |
800 | */ | |
ec26ff5a JW |
801 | |
802 | template<typename _Tp, typename _Up = _Tp&&> | |
803 | _Up | |
804 | __declval(int); | |
805 | ||
806 | template<typename _Tp> | |
807 | _Tp | |
808 | __declval(long); | |
809 | ||
53dc5044 | 810 | template<typename _Tp> |
ec26ff5a | 811 | auto declval() noexcept -> decltype(__declval<_Tp>(0)); |
53dc5044 | 812 | |
123c516a PC |
813 | template<typename, unsigned = 0> |
814 | struct extent; | |
815 | ||
816 | template<typename> | |
817 | struct remove_all_extents; | |
818 | ||
819 | template<typename _Tp> | |
820 | struct __is_array_known_bounds | |
821 | : public integral_constant<bool, (extent<_Tp>::value > 0)> | |
53dc5044 PC |
822 | { }; |
823 | ||
123c516a PC |
824 | template<typename _Tp> |
825 | struct __is_array_unknown_bounds | |
f7632193 | 826 | : public __and_<is_array<_Tp>, __not_<extent<_Tp>>> |
53dc5044 | 827 | { }; |
33ac58d5 | 828 | |
62fa805f | 829 | // In N3290 is_destructible does not say anything about function |
2c7a09d7 | 830 | // types and abstract types, see LWG 2049. This implementation |
62fa805f DK |
831 | // describes function types as non-destructible and all complete |
832 | // object types as destructible, iff the explicit destructor | |
2c7a09d7 | 833 | // call expression is wellformed. |
62fa805f | 834 | struct __do_is_destructible_impl |
123c516a | 835 | { |
62fa805f | 836 | template<typename _Tp, typename = decltype(declval<_Tp&>().~_Tp())> |
123c516a PC |
837 | static true_type __test(int); |
838 | ||
839 | template<typename> | |
840 | static false_type __test(...); | |
841 | }; | |
53dc5044 PC |
842 | |
843 | template<typename _Tp> | |
62fa805f DK |
844 | struct __is_destructible_impl |
845 | : public __do_is_destructible_impl | |
123c516a PC |
846 | { |
847 | typedef decltype(__test<_Tp>(0)) type; | |
848 | }; | |
53dc5044 | 849 | |
62fa805f DK |
850 | template<typename _Tp, |
851 | bool = __or_<is_void<_Tp>, | |
852 | __is_array_unknown_bounds<_Tp>, | |
853 | is_function<_Tp>>::value, | |
854 | bool = __or_<is_reference<_Tp>, is_scalar<_Tp>>::value> | |
855 | struct __is_destructible_safe; | |
856 | ||
857 | template<typename _Tp> | |
858 | struct __is_destructible_safe<_Tp, false, false> | |
859 | : public __is_destructible_impl<typename | |
860 | remove_all_extents<_Tp>::type>::type | |
861 | { }; | |
862 | ||
863 | template<typename _Tp> | |
864 | struct __is_destructible_safe<_Tp, true, false> | |
865 | : public false_type { }; | |
866 | ||
867 | template<typename _Tp> | |
868 | struct __is_destructible_safe<_Tp, false, true> | |
869 | : public true_type { }; | |
870 | ||
871 | /// is_destructible | |
872 | template<typename _Tp> | |
873 | struct is_destructible | |
82b12c4b | 874 | : public __is_destructible_safe<_Tp>::type |
608a080c AP |
875 | { |
876 | static_assert(std::__is_complete_or_unbounded(__type_identity<_Tp>{}), | |
877 | "template argument must be a complete class or an unbounded array"); | |
878 | }; | |
62fa805f DK |
879 | |
880 | // is_nothrow_destructible requires that is_destructible is | |
881 | // satisfied as well. We realize that by mimicing the | |
882 | // implementation of is_destructible but refer to noexcept(expr) | |
883 | // instead of decltype(expr). | |
884 | struct __do_is_nt_destructible_impl | |
123c516a | 885 | { |
62fa805f | 886 | template<typename _Tp> |
c01f9216 JW |
887 | static __bool_constant<noexcept(declval<_Tp&>().~_Tp())> |
888 | __test(int); | |
123c516a PC |
889 | |
890 | template<typename> | |
891 | static false_type __test(...); | |
892 | }; | |
53dc5044 | 893 | |
53dc5044 | 894 | template<typename _Tp> |
62fa805f DK |
895 | struct __is_nt_destructible_impl |
896 | : public __do_is_nt_destructible_impl | |
123c516a PC |
897 | { |
898 | typedef decltype(__test<_Tp>(0)) type; | |
899 | }; | |
900 | ||
901 | template<typename _Tp, | |
902 | bool = __or_<is_void<_Tp>, | |
62fa805f DK |
903 | __is_array_unknown_bounds<_Tp>, |
904 | is_function<_Tp>>::value, | |
905 | bool = __or_<is_reference<_Tp>, is_scalar<_Tp>>::value> | |
906 | struct __is_nt_destructible_safe; | |
53dc5044 PC |
907 | |
908 | template<typename _Tp> | |
62fa805f DK |
909 | struct __is_nt_destructible_safe<_Tp, false, false> |
910 | : public __is_nt_destructible_impl<typename | |
911 | remove_all_extents<_Tp>::type>::type | |
123c516a PC |
912 | { }; |
913 | ||
53dc5044 | 914 | template<typename _Tp> |
62fa805f | 915 | struct __is_nt_destructible_safe<_Tp, true, false> |
123c516a | 916 | : public false_type { }; |
53dc5044 PC |
917 | |
918 | template<typename _Tp> | |
62fa805f | 919 | struct __is_nt_destructible_safe<_Tp, false, true> |
123c516a PC |
920 | : public true_type { }; |
921 | ||
62fa805f | 922 | /// is_nothrow_destructible |
53dc5044 | 923 | template<typename _Tp> |
62fa805f | 924 | struct is_nothrow_destructible |
82b12c4b | 925 | : public __is_nt_destructible_safe<_Tp>::type |
608a080c AP |
926 | { |
927 | static_assert(std::__is_complete_or_unbounded(__type_identity<_Tp>{}), | |
928 | "template argument must be a complete class or an unbounded array"); | |
929 | }; | |
930 | ||
931 | template<typename _Tp, typename... _Args> | |
932 | struct __is_constructible_impl | |
933 | : public __bool_constant<__is_constructible(_Tp, _Args...)> | |
123c516a PC |
934 | { }; |
935 | ||
58487c21 JW |
936 | /// is_constructible |
937 | template<typename _Tp, typename... _Args> | |
938 | struct is_constructible | |
608a080c AP |
939 | : public __is_constructible_impl<_Tp, _Args...> |
940 | { | |
941 | static_assert(std::__is_complete_or_unbounded(__type_identity<_Tp>{}), | |
942 | "template argument must be a complete class or an unbounded array"); | |
943 | }; | |
4a27a739 | 944 | |
123c516a | 945 | /// is_default_constructible |
4a27a739 | 946 | template<typename _Tp> |
123c516a | 947 | struct is_default_constructible |
608a080c AP |
948 | : public __is_constructible_impl<_Tp>::type |
949 | { | |
950 | static_assert(std::__is_complete_or_unbounded(__type_identity<_Tp>{}), | |
951 | "template argument must be a complete class or an unbounded array"); | |
952 | }; | |
c32097d8 | 953 | |
89898034 | 954 | template<typename _Tp, bool = __is_referenceable<_Tp>::value> |
65cee9bd | 955 | struct __is_copy_constructible_impl; |
123c516a | 956 | |
65cee9bd | 957 | template<typename _Tp> |
89898034 | 958 | struct __is_copy_constructible_impl<_Tp, false> |
65cee9bd PC |
959 | : public false_type { }; |
960 | ||
961 | template<typename _Tp> | |
89898034 | 962 | struct __is_copy_constructible_impl<_Tp, true> |
608a080c | 963 | : public __is_constructible_impl<_Tp, const _Tp&> |
65cee9bd PC |
964 | { }; |
965 | ||
966 | /// is_copy_constructible | |
967 | template<typename _Tp> | |
968 | struct is_copy_constructible | |
969 | : public __is_copy_constructible_impl<_Tp> | |
608a080c AP |
970 | { |
971 | static_assert(std::__is_complete_or_unbounded(__type_identity<_Tp>{}), | |
972 | "template argument must be a complete class or an unbounded array"); | |
973 | }; | |
65cee9bd | 974 | |
89898034 | 975 | template<typename _Tp, bool = __is_referenceable<_Tp>::value> |
65cee9bd PC |
976 | struct __is_move_constructible_impl; |
977 | ||
978 | template<typename _Tp> | |
89898034 | 979 | struct __is_move_constructible_impl<_Tp, false> |
65cee9bd PC |
980 | : public false_type { }; |
981 | ||
982 | template<typename _Tp> | |
89898034 | 983 | struct __is_move_constructible_impl<_Tp, true> |
608a080c | 984 | : public __is_constructible_impl<_Tp, _Tp&&> |
65cee9bd PC |
985 | { }; |
986 | ||
987 | /// is_move_constructible | |
988 | template<typename _Tp> | |
989 | struct is_move_constructible | |
990 | : public __is_move_constructible_impl<_Tp> | |
608a080c AP |
991 | { |
992 | static_assert(std::__is_complete_or_unbounded(__type_identity<_Tp>{}), | |
993 | "template argument must be a complete class or an unbounded array"); | |
994 | }; | |
65cee9bd PC |
995 | |
996 | template<typename _Tp> | |
997 | struct __is_nt_default_constructible_atom | |
998 | : public integral_constant<bool, noexcept(_Tp())> | |
999 | { }; | |
1000 | ||
1001 | template<typename _Tp, bool = is_array<_Tp>::value> | |
1002 | struct __is_nt_default_constructible_impl; | |
1003 | ||
1004 | template<typename _Tp> | |
1005 | struct __is_nt_default_constructible_impl<_Tp, true> | |
1006 | : public __and_<__is_array_known_bounds<_Tp>, | |
1007 | __is_nt_default_constructible_atom<typename | |
f7632193 | 1008 | remove_all_extents<_Tp>::type>> |
65cee9bd PC |
1009 | { }; |
1010 | ||
1011 | template<typename _Tp> | |
1012 | struct __is_nt_default_constructible_impl<_Tp, false> | |
1013 | : public __is_nt_default_constructible_atom<_Tp> | |
1014 | { }; | |
1015 | ||
608a080c AP |
1016 | template<typename _Tp> |
1017 | using __is_nothrow_default_constructible_impl | |
1018 | = __and_<__is_constructible_impl<_Tp>, | |
1019 | __is_nt_default_constructible_impl<_Tp>>; | |
1020 | ||
65cee9bd PC |
1021 | /// is_nothrow_default_constructible |
1022 | template<typename _Tp> | |
1023 | struct is_nothrow_default_constructible | |
608a080c AP |
1024 | : public __is_nothrow_default_constructible_impl<_Tp>::type |
1025 | { | |
1026 | static_assert(std::__is_complete_or_unbounded(__type_identity<_Tp>{}), | |
1027 | "template argument must be a complete class or an unbounded array"); | |
1028 | }; | |
e4f32cb0 PC |
1029 | |
1030 | template<typename _Tp, typename... _Args> | |
65cee9bd PC |
1031 | struct __is_nt_constructible_impl |
1032 | : public integral_constant<bool, noexcept(_Tp(declval<_Args>()...))> | |
1033 | { }; | |
e4f32cb0 PC |
1034 | |
1035 | template<typename _Tp, typename _Arg> | |
65cee9bd PC |
1036 | struct __is_nt_constructible_impl<_Tp, _Arg> |
1037 | : public integral_constant<bool, | |
1038 | noexcept(static_cast<_Tp>(declval<_Arg>()))> | |
1039 | { }; | |
1040 | ||
1041 | template<typename _Tp> | |
1042 | struct __is_nt_constructible_impl<_Tp> | |
608a080c | 1043 | : public __is_nothrow_default_constructible_impl<_Tp> |
65cee9bd | 1044 | { }; |
e4f32cb0 | 1045 | |
e4f32cb0 | 1046 | template<typename _Tp, typename... _Args> |
608a080c AP |
1047 | struct __is_nothrow_constructible_impl |
1048 | : public __and_<__is_constructible_impl<_Tp, _Args...>, | |
f7632193 | 1049 | __is_nt_constructible_impl<_Tp, _Args...>> |
65cee9bd PC |
1050 | { }; |
1051 | ||
608a080c AP |
1052 | /// is_nothrow_constructible |
1053 | template<typename _Tp, typename... _Args> | |
1054 | struct is_nothrow_constructible | |
1055 | : public __is_nothrow_constructible_impl<_Tp, _Args...>::type | |
1056 | { | |
1057 | static_assert(std::__is_complete_or_unbounded(__type_identity<_Tp>{}), | |
1058 | "template argument must be a complete class or an unbounded array"); | |
1059 | }; | |
1060 | ||
89898034 | 1061 | template<typename _Tp, bool = __is_referenceable<_Tp>::value> |
65cee9bd PC |
1062 | struct __is_nothrow_copy_constructible_impl; |
1063 | ||
1064 | template<typename _Tp> | |
89898034 | 1065 | struct __is_nothrow_copy_constructible_impl<_Tp, false> |
65cee9bd PC |
1066 | : public false_type { }; |
1067 | ||
1068 | template<typename _Tp> | |
89898034 | 1069 | struct __is_nothrow_copy_constructible_impl<_Tp, true> |
608a080c | 1070 | : public __is_nothrow_constructible_impl<_Tp, const _Tp&> |
65cee9bd PC |
1071 | { }; |
1072 | ||
1073 | /// is_nothrow_copy_constructible | |
1074 | template<typename _Tp> | |
1075 | struct is_nothrow_copy_constructible | |
608a080c AP |
1076 | : public __is_nothrow_copy_constructible_impl<_Tp>::type |
1077 | { | |
1078 | static_assert(std::__is_complete_or_unbounded(__type_identity<_Tp>{}), | |
1079 | "template argument must be a complete class or an unbounded array"); | |
1080 | }; | |
65cee9bd | 1081 | |
89898034 | 1082 | template<typename _Tp, bool = __is_referenceable<_Tp>::value> |
65cee9bd PC |
1083 | struct __is_nothrow_move_constructible_impl; |
1084 | ||
1085 | template<typename _Tp> | |
89898034 | 1086 | struct __is_nothrow_move_constructible_impl<_Tp, false> |
65cee9bd PC |
1087 | : public false_type { }; |
1088 | ||
1089 | template<typename _Tp> | |
89898034 | 1090 | struct __is_nothrow_move_constructible_impl<_Tp, true> |
608a080c | 1091 | : public __is_nothrow_constructible_impl<_Tp, _Tp&&> |
65cee9bd PC |
1092 | { }; |
1093 | ||
1094 | /// is_nothrow_move_constructible | |
1095 | template<typename _Tp> | |
1096 | struct is_nothrow_move_constructible | |
608a080c AP |
1097 | : public __is_nothrow_move_constructible_impl<_Tp>::type |
1098 | { | |
1099 | static_assert(std::__is_complete_or_unbounded(__type_identity<_Tp>{}), | |
1100 | "template argument must be a complete class or an unbounded array"); | |
1101 | }; | |
65cee9bd | 1102 | |
f263981a PC |
1103 | /// is_assignable |
1104 | template<typename _Tp, typename _Up> | |
1105 | struct is_assignable | |
608a080c AP |
1106 | : public __bool_constant<__is_assignable(_Tp, _Up)> |
1107 | { | |
1108 | static_assert(std::__is_complete_or_unbounded(__type_identity<_Tp>{}), | |
1109 | "template argument must be a complete class or an unbounded array"); | |
1110 | }; | |
f263981a | 1111 | |
89898034 | 1112 | template<typename _Tp, bool = __is_referenceable<_Tp>::value> |
f263981a PC |
1113 | struct __is_copy_assignable_impl; |
1114 | ||
1115 | template<typename _Tp> | |
89898034 | 1116 | struct __is_copy_assignable_impl<_Tp, false> |
f263981a PC |
1117 | : public false_type { }; |
1118 | ||
1119 | template<typename _Tp> | |
89898034 | 1120 | struct __is_copy_assignable_impl<_Tp, true> |
608a080c | 1121 | : public __bool_constant<__is_assignable(_Tp&, const _Tp&)> |
f263981a PC |
1122 | { }; |
1123 | ||
1124 | /// is_copy_assignable | |
1125 | template<typename _Tp> | |
1126 | struct is_copy_assignable | |
608a080c AP |
1127 | : public __is_copy_assignable_impl<_Tp>::type |
1128 | { | |
1129 | static_assert(std::__is_complete_or_unbounded(__type_identity<_Tp>{}), | |
1130 | "template argument must be a complete class or an unbounded array"); | |
1131 | }; | |
f263981a | 1132 | |
89898034 | 1133 | template<typename _Tp, bool = __is_referenceable<_Tp>::value> |
f263981a PC |
1134 | struct __is_move_assignable_impl; |
1135 | ||
1136 | template<typename _Tp> | |
89898034 | 1137 | struct __is_move_assignable_impl<_Tp, false> |
f263981a PC |
1138 | : public false_type { }; |
1139 | ||
1140 | template<typename _Tp> | |
89898034 | 1141 | struct __is_move_assignable_impl<_Tp, true> |
608a080c | 1142 | : public __bool_constant<__is_assignable(_Tp&, _Tp&&)> |
f263981a PC |
1143 | { }; |
1144 | ||
1145 | /// is_move_assignable | |
1146 | template<typename _Tp> | |
1147 | struct is_move_assignable | |
608a080c AP |
1148 | : public __is_move_assignable_impl<_Tp>::type |
1149 | { | |
1150 | static_assert(std::__is_complete_or_unbounded(__type_identity<_Tp>{}), | |
1151 | "template argument must be a complete class or an unbounded array"); | |
1152 | }; | |
f263981a PC |
1153 | |
1154 | template<typename _Tp, typename _Up> | |
1155 | struct __is_nt_assignable_impl | |
1156 | : public integral_constant<bool, noexcept(declval<_Tp>() = declval<_Up>())> | |
1157 | { }; | |
1158 | ||
f263981a | 1159 | template<typename _Tp, typename _Up> |
608a080c AP |
1160 | struct __is_nothrow_assignable_impl |
1161 | : public __and_<__bool_constant<__is_assignable(_Tp, _Up)>, | |
f7632193 | 1162 | __is_nt_assignable_impl<_Tp, _Up>> |
f263981a PC |
1163 | { }; |
1164 | ||
608a080c AP |
1165 | /// is_nothrow_assignable |
1166 | template<typename _Tp, typename _Up> | |
1167 | struct is_nothrow_assignable | |
1168 | : public __is_nothrow_assignable_impl<_Tp, _Up> | |
1169 | { | |
1170 | static_assert(std::__is_complete_or_unbounded(__type_identity<_Tp>{}), | |
1171 | "template argument must be a complete class or an unbounded array"); | |
1172 | }; | |
1173 | ||
89898034 | 1174 | template<typename _Tp, bool = __is_referenceable<_Tp>::value> |
f263981a PC |
1175 | struct __is_nt_copy_assignable_impl; |
1176 | ||
1177 | template<typename _Tp> | |
89898034 | 1178 | struct __is_nt_copy_assignable_impl<_Tp, false> |
f263981a PC |
1179 | : public false_type { }; |
1180 | ||
1181 | template<typename _Tp> | |
89898034 | 1182 | struct __is_nt_copy_assignable_impl<_Tp, true> |
608a080c | 1183 | : public __is_nothrow_assignable_impl<_Tp&, const _Tp&> |
f263981a PC |
1184 | { }; |
1185 | ||
1186 | /// is_nothrow_copy_assignable | |
1187 | template<typename _Tp> | |
1188 | struct is_nothrow_copy_assignable | |
1189 | : public __is_nt_copy_assignable_impl<_Tp> | |
608a080c AP |
1190 | { |
1191 | static_assert(std::__is_complete_or_unbounded(__type_identity<_Tp>{}), | |
1192 | "template argument must be a complete class or an unbounded array"); | |
1193 | }; | |
f263981a | 1194 | |
89898034 | 1195 | template<typename _Tp, bool = __is_referenceable<_Tp>::value> |
f263981a PC |
1196 | struct __is_nt_move_assignable_impl; |
1197 | ||
1198 | template<typename _Tp> | |
89898034 | 1199 | struct __is_nt_move_assignable_impl<_Tp, false> |
f263981a PC |
1200 | : public false_type { }; |
1201 | ||
1202 | template<typename _Tp> | |
89898034 | 1203 | struct __is_nt_move_assignable_impl<_Tp, true> |
608a080c | 1204 | : public __is_nothrow_assignable_impl<_Tp&, _Tp&&> |
f263981a PC |
1205 | { }; |
1206 | ||
1207 | /// is_nothrow_move_assignable | |
65cee9bd | 1208 | template<typename _Tp> |
f263981a PC |
1209 | struct is_nothrow_move_assignable |
1210 | : public __is_nt_move_assignable_impl<_Tp> | |
608a080c AP |
1211 | { |
1212 | static_assert(std::__is_complete_or_unbounded(__type_identity<_Tp>{}), | |
1213 | "template argument must be a complete class or an unbounded array"); | |
1214 | }; | |
e4f32cb0 | 1215 | |
f5e523b7 VV |
1216 | /// is_trivially_constructible |
1217 | template<typename _Tp, typename... _Args> | |
1218 | struct is_trivially_constructible | |
c01f9216 | 1219 | : public __bool_constant<__is_trivially_constructible(_Tp, _Args...)> |
608a080c AP |
1220 | { |
1221 | static_assert(std::__is_complete_or_unbounded(__type_identity<_Tp>{}), | |
1222 | "template argument must be a complete class or an unbounded array"); | |
1223 | }; | |
33ac58d5 | 1224 | |
f5e523b7 VV |
1225 | /// is_trivially_default_constructible |
1226 | template<typename _Tp> | |
1227 | struct is_trivially_default_constructible | |
608a080c AP |
1228 | : public __bool_constant<__is_trivially_constructible(_Tp)> |
1229 | { | |
1230 | static_assert(std::__is_complete_or_unbounded(__type_identity<_Tp>{}), | |
1231 | "template argument must be a complete class or an unbounded array"); | |
1232 | }; | |
6a9ecd34 | 1233 | |
f7632193 VV |
1234 | struct __do_is_implicitly_default_constructible_impl |
1235 | { | |
1236 | template <typename _Tp> | |
1237 | static void __helper(const _Tp&); | |
1238 | ||
1239 | template <typename _Tp> | |
1240 | static true_type __test(const _Tp&, | |
1241 | decltype(__helper<const _Tp&>({}))* = 0); | |
1242 | ||
1243 | static false_type __test(...); | |
1244 | }; | |
1245 | ||
1246 | template<typename _Tp> | |
1247 | struct __is_implicitly_default_constructible_impl | |
e9029d55 JW |
1248 | : public __do_is_implicitly_default_constructible_impl |
1249 | { | |
1250 | typedef decltype(__test(declval<_Tp>())) type; | |
1251 | }; | |
f7632193 VV |
1252 | |
1253 | template<typename _Tp> | |
1254 | struct __is_implicitly_default_constructible_safe | |
e9029d55 JW |
1255 | : public __is_implicitly_default_constructible_impl<_Tp>::type |
1256 | { }; | |
f7632193 VV |
1257 | |
1258 | template <typename _Tp> | |
1259 | struct __is_implicitly_default_constructible | |
608a080c | 1260 | : public __and_<__is_constructible_impl<_Tp>, |
e9029d55 JW |
1261 | __is_implicitly_default_constructible_safe<_Tp>> |
1262 | { }; | |
f7632193 | 1263 | |
b42cc3ca VV |
1264 | template<typename _Tp, bool = __is_referenceable<_Tp>::value> |
1265 | struct __is_trivially_copy_constructible_impl; | |
1266 | ||
f5e523b7 | 1267 | template<typename _Tp> |
b42cc3ca VV |
1268 | struct __is_trivially_copy_constructible_impl<_Tp, false> |
1269 | : public false_type { }; | |
1270 | ||
1271 | template<typename _Tp> | |
1272 | struct __is_trivially_copy_constructible_impl<_Tp, true> | |
608a080c | 1273 | : public __and_<__is_copy_constructible_impl<_Tp>, |
f5e523b7 | 1274 | integral_constant<bool, |
f7632193 | 1275 | __is_trivially_constructible(_Tp, const _Tp&)>> |
f5e523b7 | 1276 | { }; |
33ac58d5 | 1277 | |
608a080c | 1278 | /// is_trivially_copy_constructible |
b42cc3ca VV |
1279 | template<typename _Tp> |
1280 | struct is_trivially_copy_constructible | |
1281 | : public __is_trivially_copy_constructible_impl<_Tp> | |
608a080c AP |
1282 | { |
1283 | static_assert(std::__is_complete_or_unbounded(__type_identity<_Tp>{}), | |
1284 | "template argument must be a complete class or an unbounded array"); | |
1285 | }; | |
b42cc3ca VV |
1286 | |
1287 | template<typename _Tp, bool = __is_referenceable<_Tp>::value> | |
1288 | struct __is_trivially_move_constructible_impl; | |
1289 | ||
f5e523b7 | 1290 | template<typename _Tp> |
b42cc3ca VV |
1291 | struct __is_trivially_move_constructible_impl<_Tp, false> |
1292 | : public false_type { }; | |
1293 | ||
1294 | template<typename _Tp> | |
1295 | struct __is_trivially_move_constructible_impl<_Tp, true> | |
608a080c | 1296 | : public __and_<__is_move_constructible_impl<_Tp>, |
f5e523b7 | 1297 | integral_constant<bool, |
f7632193 | 1298 | __is_trivially_constructible(_Tp, _Tp&&)>> |
f5e523b7 | 1299 | { }; |
6a9ecd34 | 1300 | |
608a080c | 1301 | /// is_trivially_move_constructible |
b42cc3ca VV |
1302 | template<typename _Tp> |
1303 | struct is_trivially_move_constructible | |
1304 | : public __is_trivially_move_constructible_impl<_Tp> | |
608a080c AP |
1305 | { |
1306 | static_assert(std::__is_complete_or_unbounded(__type_identity<_Tp>{}), | |
1307 | "template argument must be a complete class or an unbounded array"); | |
1308 | }; | |
b42cc3ca | 1309 | |
f5e523b7 VV |
1310 | /// is_trivially_assignable |
1311 | template<typename _Tp, typename _Up> | |
1312 | struct is_trivially_assignable | |
b42cc3ca | 1313 | : public __bool_constant<__is_trivially_assignable(_Tp, _Up)> |
608a080c AP |
1314 | { |
1315 | static_assert(std::__is_complete_or_unbounded(__type_identity<_Tp>{}), | |
1316 | "template argument must be a complete class or an unbounded array"); | |
1317 | }; | |
b42cc3ca VV |
1318 | |
1319 | template<typename _Tp, bool = __is_referenceable<_Tp>::value> | |
1320 | struct __is_trivially_copy_assignable_impl; | |
1321 | ||
f5e523b7 | 1322 | template<typename _Tp> |
b42cc3ca VV |
1323 | struct __is_trivially_copy_assignable_impl<_Tp, false> |
1324 | : public false_type { }; | |
1325 | ||
1326 | template<typename _Tp> | |
1327 | struct __is_trivially_copy_assignable_impl<_Tp, true> | |
c01f9216 | 1328 | : public __bool_constant<__is_trivially_assignable(_Tp&, const _Tp&)> |
f5e523b7 | 1329 | { }; |
6a9ecd34 | 1330 | |
608a080c | 1331 | /// is_trivially_copy_assignable |
b42cc3ca VV |
1332 | template<typename _Tp> |
1333 | struct is_trivially_copy_assignable | |
1334 | : public __is_trivially_copy_assignable_impl<_Tp> | |
608a080c AP |
1335 | { |
1336 | static_assert(std::__is_complete_or_unbounded(__type_identity<_Tp>{}), | |
1337 | "template argument must be a complete class or an unbounded array"); | |
1338 | }; | |
b42cc3ca VV |
1339 | |
1340 | template<typename _Tp, bool = __is_referenceable<_Tp>::value> | |
1341 | struct __is_trivially_move_assignable_impl; | |
1342 | ||
f5e523b7 | 1343 | template<typename _Tp> |
b42cc3ca VV |
1344 | struct __is_trivially_move_assignable_impl<_Tp, false> |
1345 | : public false_type { }; | |
1346 | ||
1347 | template<typename _Tp> | |
1348 | struct __is_trivially_move_assignable_impl<_Tp, true> | |
c01f9216 | 1349 | : public __bool_constant<__is_trivially_assignable(_Tp&, _Tp&&)> |
f5e523b7 | 1350 | { }; |
6a9ecd34 | 1351 | |
608a080c | 1352 | /// is_trivially_move_assignable |
b42cc3ca VV |
1353 | template<typename _Tp> |
1354 | struct is_trivially_move_assignable | |
1355 | : public __is_trivially_move_assignable_impl<_Tp> | |
608a080c AP |
1356 | { |
1357 | static_assert(std::__is_complete_or_unbounded(__type_identity<_Tp>{}), | |
1358 | "template argument must be a complete class or an unbounded array"); | |
1359 | }; | |
b42cc3ca | 1360 | |
6a9ecd34 PC |
1361 | /// is_trivially_destructible |
1362 | template<typename _Tp> | |
1363 | struct is_trivially_destructible | |
608a080c | 1364 | : public __and_<__is_destructible_safe<_Tp>, |
c01f9216 | 1365 | __bool_constant<__has_trivial_destructor(_Tp)>> |
608a080c AP |
1366 | { |
1367 | static_assert(std::__is_complete_or_unbounded(__type_identity<_Tp>{}), | |
1368 | "template argument must be a complete class or an unbounded array"); | |
1369 | }; | |
6a9ecd34 | 1370 | |
e133ace8 | 1371 | |
123c516a PC |
1372 | /// has_virtual_destructor |
1373 | template<typename _Tp> | |
1374 | struct has_virtual_destructor | |
1375 | : public integral_constant<bool, __has_virtual_destructor(_Tp)> | |
608a080c AP |
1376 | { |
1377 | static_assert(std::__is_complete_or_unbounded(__type_identity<_Tp>{}), | |
1378 | "template argument must be a complete class or an unbounded array"); | |
1379 | }; | |
123c516a | 1380 | |
33ac58d5 | 1381 | |
123c516a PC |
1382 | // type property queries. |
1383 | ||
1384 | /// alignment_of | |
1385 | template<typename _Tp> | |
1386 | struct alignment_of | |
608a080c AP |
1387 | : public integral_constant<std::size_t, alignof(_Tp)> |
1388 | { | |
1389 | static_assert(std::__is_complete_or_unbounded(__type_identity<_Tp>{}), | |
1390 | "template argument must be a complete class or an unbounded array"); | |
1391 | }; | |
33ac58d5 | 1392 | |
123c516a PC |
1393 | /// rank |
1394 | template<typename> | |
1395 | struct rank | |
1396 | : public integral_constant<std::size_t, 0> { }; | |
33ac58d5 | 1397 | |
123c516a PC |
1398 | template<typename _Tp, std::size_t _Size> |
1399 | struct rank<_Tp[_Size]> | |
1400 | : public integral_constant<std::size_t, 1 + rank<_Tp>::value> { }; | |
1401 | ||
1402 | template<typename _Tp> | |
1403 | struct rank<_Tp[]> | |
1404 | : public integral_constant<std::size_t, 1 + rank<_Tp>::value> { }; | |
1405 | ||
1406 | /// extent | |
1407 | template<typename, unsigned _Uint> | |
1408 | struct extent | |
1409 | : public integral_constant<std::size_t, 0> { }; | |
33ac58d5 | 1410 | |
123c516a PC |
1411 | template<typename _Tp, unsigned _Uint, std::size_t _Size> |
1412 | struct extent<_Tp[_Size], _Uint> | |
1413 | : public integral_constant<std::size_t, | |
1414 | _Uint == 0 ? _Size : extent<_Tp, | |
1415 | _Uint - 1>::value> | |
1416 | { }; | |
1417 | ||
1418 | template<typename _Tp, unsigned _Uint> | |
1419 | struct extent<_Tp[], _Uint> | |
1420 | : public integral_constant<std::size_t, | |
1421 | _Uint == 0 ? 0 : extent<_Tp, | |
1422 | _Uint - 1>::value> | |
1423 | { }; | |
1424 | ||
1425 | ||
c0ffa2ba | 1426 | // Type relations. |
123c516a PC |
1427 | |
1428 | /// is_same | |
1429 | template<typename, typename> | |
1430 | struct is_same | |
1431 | : public false_type { }; | |
1432 | ||
1433 | template<typename _Tp> | |
1434 | struct is_same<_Tp, _Tp> | |
1435 | : public true_type { }; | |
b0302c68 | 1436 | |
939759fc | 1437 | /// is_base_of |
e133ace8 PC |
1438 | template<typename _Base, typename _Derived> |
1439 | struct is_base_of | |
1440 | : public integral_constant<bool, __is_base_of(_Base, _Derived)> | |
1441 | { }; | |
1442 | ||
297f34d7 | 1443 | template<typename _From, typename _To, |
123c516a PC |
1444 | bool = __or_<is_void<_From>, is_function<_To>, |
1445 | is_array<_To>>::value> | |
297f34d7 | 1446 | struct __is_convertible_helper |
8df27fcb JW |
1447 | { |
1448 | typedef typename is_void<_To>::type type; | |
8df27fcb | 1449 | }; |
297f34d7 | 1450 | |
cc28d234 JW |
1451 | #pragma GCC diagnostic push |
1452 | #pragma GCC diagnostic ignored "-Wctor-dtor-privacy" | |
e133ace8 | 1453 | template<typename _From, typename _To> |
b0302c68 | 1454 | class __is_convertible_helper<_From, _To, false> |
e133ace8 | 1455 | { |
8df27fcb JW |
1456 | template<typename _To1> |
1457 | static void __test_aux(_To1) noexcept; | |
8e7d962a | 1458 | |
82b12c4b FD |
1459 | template<typename _From1, typename _To1, |
1460 | typename = decltype(__test_aux<_To1>(std::declval<_From1>()))> | |
1461 | static true_type | |
8e7d962a PC |
1462 | __test(int); |
1463 | ||
1464 | template<typename, typename> | |
82b12c4b FD |
1465 | static false_type |
1466 | __test(...); | |
297f34d7 | 1467 | |
e133ace8 | 1468 | public: |
82b12c4b | 1469 | typedef decltype(__test<_From, _To>(0)) type; |
e133ace8 | 1470 | }; |
cc28d234 | 1471 | #pragma GCC diagnostic pop |
82b12c4b | 1472 | |
b0302c68 | 1473 | /// is_convertible |
e133ace8 PC |
1474 | template<typename _From, typename _To> |
1475 | struct is_convertible | |
82b12c4b | 1476 | : public __is_convertible_helper<_From, _To>::type |
e133ace8 PC |
1477 | { }; |
1478 | ||
608a080c | 1479 | template<typename _From, typename _To, |
ed99e818 JW |
1480 | bool = __or_<is_void<_From>, is_function<_To>, |
1481 | is_array<_To>>::value> | |
1482 | struct __is_nt_convertible_helper | |
1483 | : is_void<_To> | |
1484 | { }; | |
1485 | ||
cc28d234 JW |
1486 | #pragma GCC diagnostic push |
1487 | #pragma GCC diagnostic ignored "-Wctor-dtor-privacy" | |
ed99e818 JW |
1488 | template<typename _From, typename _To> |
1489 | class __is_nt_convertible_helper<_From, _To, false> | |
1490 | { | |
1491 | template<typename _To1> | |
1492 | static void __test_aux(_To1) noexcept; | |
1493 | ||
1494 | template<typename _From1, typename _To1> | |
ce9f305e JW |
1495 | static |
1496 | __bool_constant<noexcept(__test_aux<_To1>(std::declval<_From1>()))> | |
ed99e818 JW |
1497 | __test(int); |
1498 | ||
1499 | template<typename, typename> | |
1500 | static false_type | |
1501 | __test(...); | |
1502 | ||
1503 | public: | |
1504 | using type = decltype(__test<_From, _To>(0)); | |
1505 | }; | |
cc28d234 | 1506 | #pragma GCC diagnostic pop |
ed99e818 | 1507 | |
ce9f305e JW |
1508 | // is_nothrow_convertible for C++11 |
1509 | template<typename _From, typename _To> | |
1510 | struct __is_nothrow_convertible | |
1511 | : public __is_nt_convertible_helper<_From, _To>::type | |
1512 | { }; | |
1513 | ||
1514 | #if __cplusplus > 201703L | |
8df27fcb JW |
1515 | /// is_nothrow_convertible |
1516 | template<typename _From, typename _To> | |
1517 | struct is_nothrow_convertible | |
ed99e818 | 1518 | : public __is_nt_convertible_helper<_From, _To>::type |
8df27fcb JW |
1519 | { }; |
1520 | ||
1521 | /// is_nothrow_convertible_v | |
1522 | template<typename _From, typename _To> | |
1523 | inline constexpr bool is_nothrow_convertible_v | |
1524 | = is_nothrow_convertible<_From, _To>::value; | |
1525 | #endif // C++2a | |
fd735b6a | 1526 | |
c0ffa2ba | 1527 | // Const-volatile modifications. |
7b50cdef | 1528 | |
123c516a | 1529 | /// remove_const |
7b50cdef | 1530 | template<typename _Tp> |
123c516a PC |
1531 | struct remove_const |
1532 | { typedef _Tp type; }; | |
7b50cdef | 1533 | |
123c516a PC |
1534 | template<typename _Tp> |
1535 | struct remove_const<_Tp const> | |
1536 | { typedef _Tp type; }; | |
33ac58d5 | 1537 | |
123c516a PC |
1538 | /// remove_volatile |
1539 | template<typename _Tp> | |
1540 | struct remove_volatile | |
1541 | { typedef _Tp type; }; | |
7b50cdef | 1542 | |
123c516a PC |
1543 | template<typename _Tp> |
1544 | struct remove_volatile<_Tp volatile> | |
1545 | { typedef _Tp type; }; | |
33ac58d5 | 1546 | |
123c516a PC |
1547 | /// remove_cv |
1548 | template<typename _Tp> | |
1549 | struct remove_cv | |
1550 | { | |
1551 | typedef typename | |
1552 | remove_const<typename remove_volatile<_Tp>::type>::type type; | |
1553 | }; | |
33ac58d5 | 1554 | |
123c516a PC |
1555 | /// add_const |
1556 | template<typename _Tp> | |
1557 | struct add_const | |
1558 | { typedef _Tp const type; }; | |
33ac58d5 | 1559 | |
123c516a PC |
1560 | /// add_volatile |
1561 | template<typename _Tp> | |
1562 | struct add_volatile | |
1563 | { typedef _Tp volatile type; }; | |
33ac58d5 | 1564 | |
123c516a PC |
1565 | /// add_cv |
1566 | template<typename _Tp> | |
1567 | struct add_cv | |
1568 | { | |
1569 | typedef typename | |
1570 | add_const<typename add_volatile<_Tp>::type>::type type; | |
1571 | }; | |
7b50cdef | 1572 | |
4457e88c | 1573 | #if __cplusplus > 201103L |
a15f7cb8 ESR |
1574 | |
1575 | #define __cpp_lib_transformation_trait_aliases 201304 | |
1576 | ||
4457e88c JW |
1577 | /// Alias template for remove_const |
1578 | template<typename _Tp> | |
1579 | using remove_const_t = typename remove_const<_Tp>::type; | |
1580 | ||
1581 | /// Alias template for remove_volatile | |
1582 | template<typename _Tp> | |
1583 | using remove_volatile_t = typename remove_volatile<_Tp>::type; | |
1584 | ||
1585 | /// Alias template for remove_cv | |
1586 | template<typename _Tp> | |
1587 | using remove_cv_t = typename remove_cv<_Tp>::type; | |
1588 | ||
1589 | /// Alias template for add_const | |
1590 | template<typename _Tp> | |
1591 | using add_const_t = typename add_const<_Tp>::type; | |
1592 | ||
1593 | /// Alias template for add_volatile | |
1594 | template<typename _Tp> | |
1595 | using add_volatile_t = typename add_volatile<_Tp>::type; | |
1596 | ||
1597 | /// Alias template for add_cv | |
1598 | template<typename _Tp> | |
1599 | using add_cv_t = typename add_cv<_Tp>::type; | |
1600 | #endif | |
7b50cdef | 1601 | |
123c516a | 1602 | // Reference transformations. |
7b50cdef | 1603 | |
123c516a PC |
1604 | /// remove_reference |
1605 | template<typename _Tp> | |
1606 | struct remove_reference | |
1607 | { typedef _Tp type; }; | |
7b50cdef | 1608 | |
123c516a PC |
1609 | template<typename _Tp> |
1610 | struct remove_reference<_Tp&> | |
1611 | { typedef _Tp type; }; | |
7b50cdef | 1612 | |
123c516a PC |
1613 | template<typename _Tp> |
1614 | struct remove_reference<_Tp&&> | |
1615 | { typedef _Tp type; }; | |
1616 | ||
89898034 | 1617 | template<typename _Tp, bool = __is_referenceable<_Tp>::value> |
123c516a PC |
1618 | struct __add_lvalue_reference_helper |
1619 | { typedef _Tp type; }; | |
7b50cdef | 1620 | |
5e108459 | 1621 | template<typename _Tp> |
89898034 | 1622 | struct __add_lvalue_reference_helper<_Tp, true> |
123c516a | 1623 | { typedef _Tp& type; }; |
5e108459 | 1624 | |
123c516a | 1625 | /// add_lvalue_reference |
5e108459 | 1626 | template<typename _Tp> |
123c516a PC |
1627 | struct add_lvalue_reference |
1628 | : public __add_lvalue_reference_helper<_Tp> | |
1629 | { }; | |
1630 | ||
89898034 | 1631 | template<typename _Tp, bool = __is_referenceable<_Tp>::value> |
123c516a PC |
1632 | struct __add_rvalue_reference_helper |
1633 | { typedef _Tp type; }; | |
5e108459 PC |
1634 | |
1635 | template<typename _Tp> | |
123c516a PC |
1636 | struct __add_rvalue_reference_helper<_Tp, true> |
1637 | { typedef _Tp&& type; }; | |
5e108459 | 1638 | |
123c516a | 1639 | /// add_rvalue_reference |
5e108459 | 1640 | template<typename _Tp> |
123c516a PC |
1641 | struct add_rvalue_reference |
1642 | : public __add_rvalue_reference_helper<_Tp> | |
1643 | { }; | |
5e108459 | 1644 | |
4457e88c JW |
1645 | #if __cplusplus > 201103L |
1646 | /// Alias template for remove_reference | |
1647 | template<typename _Tp> | |
1648 | using remove_reference_t = typename remove_reference<_Tp>::type; | |
1649 | ||
1650 | /// Alias template for add_lvalue_reference | |
1651 | template<typename _Tp> | |
1652 | using add_lvalue_reference_t = typename add_lvalue_reference<_Tp>::type; | |
1653 | ||
1654 | /// Alias template for add_rvalue_reference | |
1655 | template<typename _Tp> | |
1656 | using add_rvalue_reference_t = typename add_rvalue_reference<_Tp>::type; | |
1657 | #endif | |
7b50cdef | 1658 | |
c0ffa2ba | 1659 | // Sign modifications. |
123c516a | 1660 | |
7b50cdef BK |
1661 | // Utility for constructing identically cv-qualified types. |
1662 | template<typename _Unqualified, bool _IsConst, bool _IsVol> | |
1663 | struct __cv_selector; | |
1664 | ||
1665 | template<typename _Unqualified> | |
1666 | struct __cv_selector<_Unqualified, false, false> | |
1667 | { typedef _Unqualified __type; }; | |
1668 | ||
1669 | template<typename _Unqualified> | |
1670 | struct __cv_selector<_Unqualified, false, true> | |
1671 | { typedef volatile _Unqualified __type; }; | |
1672 | ||
1673 | template<typename _Unqualified> | |
1674 | struct __cv_selector<_Unqualified, true, false> | |
1675 | { typedef const _Unqualified __type; }; | |
1676 | ||
1677 | template<typename _Unqualified> | |
1678 | struct __cv_selector<_Unqualified, true, true> | |
1679 | { typedef const volatile _Unqualified __type; }; | |
1680 | ||
1681 | template<typename _Qualified, typename _Unqualified, | |
1682 | bool _IsConst = is_const<_Qualified>::value, | |
1683 | bool _IsVol = is_volatile<_Qualified>::value> | |
b0302c68 | 1684 | class __match_cv_qualifiers |
7b50cdef | 1685 | { |
7b50cdef BK |
1686 | typedef __cv_selector<_Unqualified, _IsConst, _IsVol> __match; |
1687 | ||
1688 | public: | |
33ac58d5 | 1689 | typedef typename __match::__type __type; |
7b50cdef BK |
1690 | }; |
1691 | ||
7b50cdef BK |
1692 | // Utility for finding the unsigned versions of signed integral types. |
1693 | template<typename _Tp> | |
e133ace8 PC |
1694 | struct __make_unsigned |
1695 | { typedef _Tp __type; }; | |
7b50cdef BK |
1696 | |
1697 | template<> | |
1698 | struct __make_unsigned<char> | |
1699 | { typedef unsigned char __type; }; | |
1700 | ||
1701 | template<> | |
1702 | struct __make_unsigned<signed char> | |
1703 | { typedef unsigned char __type; }; | |
1704 | ||
7b50cdef BK |
1705 | template<> |
1706 | struct __make_unsigned<short> | |
1707 | { typedef unsigned short __type; }; | |
1708 | ||
1709 | template<> | |
1710 | struct __make_unsigned<int> | |
1711 | { typedef unsigned int __type; }; | |
1712 | ||
1713 | template<> | |
1714 | struct __make_unsigned<long> | |
1715 | { typedef unsigned long __type; }; | |
1716 | ||
1717 | template<> | |
1718 | struct __make_unsigned<long long> | |
1719 | { typedef unsigned long long __type; }; | |
1720 | ||
78a7c317 DD |
1721 | #if defined(__GLIBCXX_TYPE_INT_N_0) |
1722 | template<> | |
1723 | struct __make_unsigned<__GLIBCXX_TYPE_INT_N_0> | |
1724 | { typedef unsigned __GLIBCXX_TYPE_INT_N_0 __type; }; | |
1725 | #endif | |
1726 | #if defined(__GLIBCXX_TYPE_INT_N_1) | |
1727 | template<> | |
1728 | struct __make_unsigned<__GLIBCXX_TYPE_INT_N_1> | |
1729 | { typedef unsigned __GLIBCXX_TYPE_INT_N_1 __type; }; | |
1730 | #endif | |
1731 | #if defined(__GLIBCXX_TYPE_INT_N_2) | |
6d585f01 | 1732 | template<> |
78a7c317 DD |
1733 | struct __make_unsigned<__GLIBCXX_TYPE_INT_N_2> |
1734 | { typedef unsigned __GLIBCXX_TYPE_INT_N_2 __type; }; | |
1735 | #endif | |
1736 | #if defined(__GLIBCXX_TYPE_INT_N_3) | |
1737 | template<> | |
1738 | struct __make_unsigned<__GLIBCXX_TYPE_INT_N_3> | |
1739 | { typedef unsigned __GLIBCXX_TYPE_INT_N_3 __type; }; | |
6d585f01 PC |
1740 | #endif |
1741 | ||
7b50cdef | 1742 | // Select between integral and enum: not possible to be both. |
33ac58d5 | 1743 | template<typename _Tp, |
7b50cdef | 1744 | bool _IsInt = is_integral<_Tp>::value, |
7b50cdef | 1745 | bool _IsEnum = is_enum<_Tp>::value> |
b0302c68 PC |
1746 | class __make_unsigned_selector; |
1747 | ||
7b50cdef | 1748 | template<typename _Tp> |
b0302c68 | 1749 | class __make_unsigned_selector<_Tp, true, false> |
7b50cdef | 1750 | { |
22f1f4c7 JW |
1751 | using __unsigned_type |
1752 | = typename __make_unsigned<typename remove_cv<_Tp>::type>::__type; | |
7b50cdef BK |
1753 | |
1754 | public: | |
22f1f4c7 JW |
1755 | using __type |
1756 | = typename __match_cv_qualifiers<_Tp, __unsigned_type>::__type; | |
7b50cdef BK |
1757 | }; |
1758 | ||
22f1f4c7 JW |
1759 | class __make_unsigned_selector_base |
1760 | { | |
1761 | protected: | |
1762 | template<typename...> struct _List { }; | |
1763 | ||
1764 | template<typename _Tp, typename... _Up> | |
1765 | struct _List<_Tp, _Up...> : _List<_Up...> | |
1766 | { static constexpr size_t __size = sizeof(_Tp); }; | |
1767 | ||
1768 | template<size_t _Sz, typename _Tp, bool = (_Sz <= _Tp::__size)> | |
1769 | struct __select; | |
1770 | ||
1771 | template<size_t _Sz, typename _Uint, typename... _UInts> | |
1772 | struct __select<_Sz, _List<_Uint, _UInts...>, true> | |
1773 | { using __type = _Uint; }; | |
1774 | ||
1775 | template<size_t _Sz, typename _Uint, typename... _UInts> | |
1776 | struct __select<_Sz, _List<_Uint, _UInts...>, false> | |
1777 | : __select<_Sz, _List<_UInts...>> | |
1778 | { }; | |
1779 | }; | |
1780 | ||
1781 | // Choose unsigned integer type with the smallest rank and same size as _Tp | |
7b50cdef | 1782 | template<typename _Tp> |
b0302c68 | 1783 | class __make_unsigned_selector<_Tp, false, true> |
22f1f4c7 | 1784 | : __make_unsigned_selector_base |
7b50cdef | 1785 | { |
a0230468 | 1786 | // With -fshort-enums, an enum may be as small as a char. |
22f1f4c7 JW |
1787 | using _UInts = _List<unsigned char, unsigned short, unsigned int, |
1788 | unsigned long, unsigned long long>; | |
1789 | ||
1790 | using __unsigned_type = typename __select<sizeof(_Tp), _UInts>::__type; | |
73d81d3a | 1791 | |
7b50cdef | 1792 | public: |
22f1f4c7 JW |
1793 | using __type |
1794 | = typename __match_cv_qualifiers<_Tp, __unsigned_type>::__type; | |
1795 | }; | |
1796 | ||
c124af93 TH |
1797 | // wchar_t, char8_t, char16_t and char32_t are integral types but are |
1798 | // neither signed integer types nor unsigned integer types, so must be | |
22f1f4c7 JW |
1799 | // transformed to the unsigned integer type with the smallest rank. |
1800 | // Use the partial specialization for enumeration types to do that. | |
1801 | #if defined(_GLIBCXX_USE_WCHAR_T) | |
1802 | template<> | |
1803 | struct __make_unsigned<wchar_t> | |
1804 | { | |
1805 | using __type | |
1806 | = typename __make_unsigned_selector<wchar_t, false, true>::__type; | |
1807 | }; | |
1808 | #endif | |
1809 | ||
c124af93 TH |
1810 | #ifdef _GLIBCXX_USE_CHAR8_T |
1811 | template<> | |
1812 | struct __make_unsigned<char8_t> | |
1813 | { | |
1814 | using __type | |
1815 | = typename __make_unsigned_selector<char8_t, false, true>::__type; | |
1816 | }; | |
1817 | #endif | |
1818 | ||
22f1f4c7 JW |
1819 | template<> |
1820 | struct __make_unsigned<char16_t> | |
1821 | { | |
1822 | using __type | |
1823 | = typename __make_unsigned_selector<char16_t, false, true>::__type; | |
1824 | }; | |
1825 | ||
1826 | template<> | |
1827 | struct __make_unsigned<char32_t> | |
1828 | { | |
1829 | using __type | |
1830 | = typename __make_unsigned_selector<char32_t, false, true>::__type; | |
7b50cdef BK |
1831 | }; |
1832 | ||
7b50cdef BK |
1833 | // Given an integral/enum type, return the corresponding unsigned |
1834 | // integer type. | |
5b9daa7e BK |
1835 | // Primary template. |
1836 | /// make_unsigned | |
7b50cdef | 1837 | template<typename _Tp> |
33ac58d5 | 1838 | struct make_unsigned |
7b50cdef BK |
1839 | { typedef typename __make_unsigned_selector<_Tp>::__type type; }; |
1840 | ||
1841 | // Integral, but don't define. | |
1842 | template<> | |
1843 | struct make_unsigned<bool>; | |
1844 | ||
1845 | ||
1846 | // Utility for finding the signed versions of unsigned integral types. | |
1847 | template<typename _Tp> | |
e133ace8 PC |
1848 | struct __make_signed |
1849 | { typedef _Tp __type; }; | |
7b50cdef BK |
1850 | |
1851 | template<> | |
1852 | struct __make_signed<char> | |
1853 | { typedef signed char __type; }; | |
1854 | ||
1855 | template<> | |
1856 | struct __make_signed<unsigned char> | |
1857 | { typedef signed char __type; }; | |
1858 | ||
7b50cdef BK |
1859 | template<> |
1860 | struct __make_signed<unsigned short> | |
1861 | { typedef signed short __type; }; | |
1862 | ||
1863 | template<> | |
1864 | struct __make_signed<unsigned int> | |
1865 | { typedef signed int __type; }; | |
1866 | ||
1867 | template<> | |
1868 | struct __make_signed<unsigned long> | |
1869 | { typedef signed long __type; }; | |
1870 | ||
1871 | template<> | |
1872 | struct __make_signed<unsigned long long> | |
1873 | { typedef signed long long __type; }; | |
1874 | ||
78a7c317 DD |
1875 | #if defined(__GLIBCXX_TYPE_INT_N_0) |
1876 | template<> | |
1877 | struct __make_signed<unsigned __GLIBCXX_TYPE_INT_N_0> | |
1878 | { typedef __GLIBCXX_TYPE_INT_N_0 __type; }; | |
1879 | #endif | |
1880 | #if defined(__GLIBCXX_TYPE_INT_N_1) | |
1881 | template<> | |
1882 | struct __make_signed<unsigned __GLIBCXX_TYPE_INT_N_1> | |
1883 | { typedef __GLIBCXX_TYPE_INT_N_1 __type; }; | |
1884 | #endif | |
1885 | #if defined(__GLIBCXX_TYPE_INT_N_2) | |
1886 | template<> | |
1887 | struct __make_signed<unsigned __GLIBCXX_TYPE_INT_N_2> | |
1888 | { typedef __GLIBCXX_TYPE_INT_N_2 __type; }; | |
1889 | #endif | |
1890 | #if defined(__GLIBCXX_TYPE_INT_N_3) | |
6d585f01 | 1891 | template<> |
78a7c317 DD |
1892 | struct __make_signed<unsigned __GLIBCXX_TYPE_INT_N_3> |
1893 | { typedef __GLIBCXX_TYPE_INT_N_3 __type; }; | |
6d585f01 PC |
1894 | #endif |
1895 | ||
fb8ffd10 | 1896 | // Select between integral and enum: not possible to be both. |
33ac58d5 | 1897 | template<typename _Tp, |
7b50cdef | 1898 | bool _IsInt = is_integral<_Tp>::value, |
7b50cdef | 1899 | bool _IsEnum = is_enum<_Tp>::value> |
b0302c68 PC |
1900 | class __make_signed_selector; |
1901 | ||
7b50cdef | 1902 | template<typename _Tp> |
b0302c68 | 1903 | class __make_signed_selector<_Tp, true, false> |
7b50cdef | 1904 | { |
22f1f4c7 JW |
1905 | using __signed_type |
1906 | = typename __make_signed<typename remove_cv<_Tp>::type>::__type; | |
7b50cdef BK |
1907 | |
1908 | public: | |
22f1f4c7 JW |
1909 | using __type |
1910 | = typename __match_cv_qualifiers<_Tp, __signed_type>::__type; | |
7b50cdef BK |
1911 | }; |
1912 | ||
22f1f4c7 | 1913 | // Choose signed integer type with the smallest rank and same size as _Tp |
7b50cdef | 1914 | template<typename _Tp> |
b0302c68 | 1915 | class __make_signed_selector<_Tp, false, true> |
7b50cdef | 1916 | { |
73d81d3a | 1917 | typedef typename __make_unsigned_selector<_Tp>::__type __unsigned_type; |
7b50cdef BK |
1918 | |
1919 | public: | |
73d81d3a | 1920 | typedef typename __make_signed_selector<__unsigned_type>::__type __type; |
7b50cdef BK |
1921 | }; |
1922 | ||
22f1f4c7 | 1923 | // wchar_t, char16_t and char32_t are integral types but are neither |
d4b695e4 | 1924 | // signed integer types nor unsigned integer types, so must be |
22f1f4c7 JW |
1925 | // transformed to the signed integer type with the smallest rank. |
1926 | // Use the partial specialization for enumeration types to do that. | |
1927 | #if defined(_GLIBCXX_USE_WCHAR_T) | |
1928 | template<> | |
1929 | struct __make_signed<wchar_t> | |
1930 | { | |
1931 | using __type | |
1932 | = typename __make_signed_selector<wchar_t, false, true>::__type; | |
1933 | }; | |
1934 | #endif | |
1935 | ||
c124af93 TH |
1936 | #if defined(_GLIBCXX_USE_CHAR8_T) |
1937 | template<> | |
1938 | struct __make_signed<char8_t> | |
1939 | { | |
1940 | using __type | |
1941 | = typename __make_signed_selector<char8_t, false, true>::__type; | |
1942 | }; | |
1943 | #endif | |
1944 | ||
22f1f4c7 JW |
1945 | template<> |
1946 | struct __make_signed<char16_t> | |
1947 | { | |
1948 | using __type | |
1949 | = typename __make_signed_selector<char16_t, false, true>::__type; | |
1950 | }; | |
1951 | ||
1952 | template<> | |
1953 | struct __make_signed<char32_t> | |
1954 | { | |
1955 | using __type | |
1956 | = typename __make_signed_selector<char32_t, false, true>::__type; | |
1957 | }; | |
1958 | ||
7b50cdef BK |
1959 | // Given an integral/enum type, return the corresponding signed |
1960 | // integer type. | |
5b9daa7e BK |
1961 | // Primary template. |
1962 | /// make_signed | |
7b50cdef | 1963 | template<typename _Tp> |
33ac58d5 | 1964 | struct make_signed |
7b50cdef BK |
1965 | { typedef typename __make_signed_selector<_Tp>::__type type; }; |
1966 | ||
1967 | // Integral, but don't define. | |
1968 | template<> | |
1969 | struct make_signed<bool>; | |
cfa9a96b | 1970 | |
4457e88c JW |
1971 | #if __cplusplus > 201103L |
1972 | /// Alias template for make_signed | |
1973 | template<typename _Tp> | |
1974 | using make_signed_t = typename make_signed<_Tp>::type; | |
1975 | ||
1976 | /// Alias template for make_unsigned | |
1977 | template<typename _Tp> | |
1978 | using make_unsigned_t = typename make_unsigned<_Tp>::type; | |
1979 | #endif | |
123c516a | 1980 | |
c0ffa2ba | 1981 | // Array modifications. |
123c516a PC |
1982 | |
1983 | /// remove_extent | |
1984 | template<typename _Tp> | |
1985 | struct remove_extent | |
1986 | { typedef _Tp type; }; | |
1987 | ||
1988 | template<typename _Tp, std::size_t _Size> | |
1989 | struct remove_extent<_Tp[_Size]> | |
1990 | { typedef _Tp type; }; | |
1991 | ||
1992 | template<typename _Tp> | |
1993 | struct remove_extent<_Tp[]> | |
1994 | { typedef _Tp type; }; | |
1995 | ||
1996 | /// remove_all_extents | |
1997 | template<typename _Tp> | |
1998 | struct remove_all_extents | |
1999 | { typedef _Tp type; }; | |
2000 | ||
2001 | template<typename _Tp, std::size_t _Size> | |
2002 | struct remove_all_extents<_Tp[_Size]> | |
2003 | { typedef typename remove_all_extents<_Tp>::type type; }; | |
2004 | ||
2005 | template<typename _Tp> | |
2006 | struct remove_all_extents<_Tp[]> | |
2007 | { typedef typename remove_all_extents<_Tp>::type type; }; | |
2008 | ||
4457e88c JW |
2009 | #if __cplusplus > 201103L |
2010 | /// Alias template for remove_extent | |
2011 | template<typename _Tp> | |
2012 | using remove_extent_t = typename remove_extent<_Tp>::type; | |
2013 | ||
2014 | /// Alias template for remove_all_extents | |
2015 | template<typename _Tp> | |
2016 | using remove_all_extents_t = typename remove_all_extents<_Tp>::type; | |
2017 | #endif | |
123c516a | 2018 | |
c0ffa2ba | 2019 | // Pointer modifications. |
123c516a PC |
2020 | |
2021 | template<typename _Tp, typename> | |
2022 | struct __remove_pointer_helper | |
2023 | { typedef _Tp type; }; | |
2024 | ||
2025 | template<typename _Tp, typename _Up> | |
2026 | struct __remove_pointer_helper<_Tp, _Up*> | |
2027 | { typedef _Up type; }; | |
2028 | ||
2029 | /// remove_pointer | |
2030 | template<typename _Tp> | |
2031 | struct remove_pointer | |
2032 | : public __remove_pointer_helper<_Tp, typename remove_cv<_Tp>::type> | |
2033 | { }; | |
2034 | ||
2035 | /// add_pointer | |
89898034 DK |
2036 | template<typename _Tp, bool = __or_<__is_referenceable<_Tp>, |
2037 | is_void<_Tp>>::value> | |
2038 | struct __add_pointer_helper | |
2039 | { typedef _Tp type; }; | |
2040 | ||
123c516a | 2041 | template<typename _Tp> |
89898034 | 2042 | struct __add_pointer_helper<_Tp, true> |
123c516a PC |
2043 | { typedef typename remove_reference<_Tp>::type* type; }; |
2044 | ||
89898034 | 2045 | template<typename _Tp> |
33ac58d5 | 2046 | struct add_pointer |
89898034 DK |
2047 | : public __add_pointer_helper<_Tp> |
2048 | { }; | |
2049 | ||
4457e88c JW |
2050 | #if __cplusplus > 201103L |
2051 | /// Alias template for remove_pointer | |
2052 | template<typename _Tp> | |
2053 | using remove_pointer_t = typename remove_pointer<_Tp>::type; | |
2054 | ||
2055 | /// Alias template for add_pointer | |
2056 | template<typename _Tp> | |
2057 | using add_pointer_t = typename add_pointer<_Tp>::type; | |
2058 | #endif | |
123c516a PC |
2059 | |
2060 | template<std::size_t _Len> | |
2061 | struct __aligned_storage_msa | |
33ac58d5 | 2062 | { |
123c516a PC |
2063 | union __type |
2064 | { | |
2065 | unsigned char __data[_Len]; | |
33ac58d5 | 2066 | struct __attribute__((__aligned__)) { } __align; |
123c516a PC |
2067 | }; |
2068 | }; | |
2069 | ||
2070 | /** | |
2071 | * @brief Alignment type. | |
2072 | * | |
2073 | * The value of _Align is a default-alignment which shall be the | |
2074 | * most stringent alignment requirement for any C++ object type | |
2075 | * whose size is no greater than _Len (3.9). The member typedef | |
2076 | * type shall be a POD type suitable for use as uninitialized | |
2077 | * storage for any object whose size is at most _Len and whose | |
2078 | * alignment is a divisor of _Align. | |
2079 | */ | |
2080 | template<std::size_t _Len, std::size_t _Align = | |
2081 | __alignof__(typename __aligned_storage_msa<_Len>::__type)> | |
2082 | struct aligned_storage | |
33ac58d5 | 2083 | { |
123c516a PC |
2084 | union type |
2085 | { | |
2086 | unsigned char __data[_Len]; | |
33ac58d5 | 2087 | struct __attribute__((__aligned__((_Align)))) { } __align; |
123c516a PC |
2088 | }; |
2089 | }; | |
2090 | ||
d3718027 RS |
2091 | template <typename... _Types> |
2092 | struct __strictest_alignment | |
2093 | { | |
2094 | static const size_t _S_alignment = 0; | |
2095 | static const size_t _S_size = 0; | |
2096 | }; | |
2097 | ||
2098 | template <typename _Tp, typename... _Types> | |
2099 | struct __strictest_alignment<_Tp, _Types...> | |
2100 | { | |
2101 | static const size_t _S_alignment = | |
2102 | alignof(_Tp) > __strictest_alignment<_Types...>::_S_alignment | |
2103 | ? alignof(_Tp) : __strictest_alignment<_Types...>::_S_alignment; | |
2104 | static const size_t _S_size = | |
2105 | sizeof(_Tp) > __strictest_alignment<_Types...>::_S_size | |
2106 | ? sizeof(_Tp) : __strictest_alignment<_Types...>::_S_size; | |
2107 | }; | |
2108 | ||
2109 | /** | |
2110 | * @brief Provide aligned storage for types. | |
2111 | * | |
2112 | * [meta.trans.other] | |
2113 | * | |
2114 | * Provides aligned storage for any of the provided types of at | |
2115 | * least size _Len. | |
2116 | * | |
2117 | * @see aligned_storage | |
2118 | */ | |
2119 | template <size_t _Len, typename... _Types> | |
2120 | struct aligned_union | |
2121 | { | |
2122 | private: | |
2123 | static_assert(sizeof...(_Types) != 0, "At least one type is required"); | |
2124 | ||
2125 | using __strictest = __strictest_alignment<_Types...>; | |
2126 | static const size_t _S_len = _Len > __strictest::_S_size | |
2127 | ? _Len : __strictest::_S_size; | |
2128 | public: | |
2129 | /// The value of the strictest alignment of _Types. | |
2130 | static const size_t alignment_value = __strictest::_S_alignment; | |
2131 | /// The storage. | |
2132 | typedef typename aligned_storage<_S_len, alignment_value>::type type; | |
2133 | }; | |
2134 | ||
2135 | template <size_t _Len, typename... _Types> | |
2136 | const size_t aligned_union<_Len, _Types...>::alignment_value; | |
123c516a PC |
2137 | |
2138 | // Decay trait for arrays and functions, used for perfect forwarding | |
2139 | // in make_pair, make_tuple, etc. | |
33ac58d5 | 2140 | template<typename _Up, |
123c516a | 2141 | bool _IsArray = is_array<_Up>::value, |
33ac58d5 | 2142 | bool _IsFunction = is_function<_Up>::value> |
123c516a PC |
2143 | struct __decay_selector; |
2144 | ||
2145 | // NB: DR 705. | |
33ac58d5 | 2146 | template<typename _Up> |
123c516a PC |
2147 | struct __decay_selector<_Up, false, false> |
2148 | { typedef typename remove_cv<_Up>::type __type; }; | |
2149 | ||
33ac58d5 | 2150 | template<typename _Up> |
123c516a PC |
2151 | struct __decay_selector<_Up, true, false> |
2152 | { typedef typename remove_extent<_Up>::type* __type; }; | |
2153 | ||
33ac58d5 | 2154 | template<typename _Up> |
123c516a PC |
2155 | struct __decay_selector<_Up, false, true> |
2156 | { typedef typename add_pointer<_Up>::type __type; }; | |
2157 | ||
2158 | /// decay | |
33ac58d5 JW |
2159 | template<typename _Tp> |
2160 | class decay | |
2161 | { | |
123c516a PC |
2162 | typedef typename remove_reference<_Tp>::type __remove_type; |
2163 | ||
2164 | public: | |
2165 | typedef typename __decay_selector<__remove_type>::__type type; | |
2166 | }; | |
2167 | ||
2168 | template<typename _Tp> | |
2169 | class reference_wrapper; | |
2170 | ||
2171 | // Helper which adds a reference to a type when given a reference_wrapper | |
2172 | template<typename _Tp> | |
2173 | struct __strip_reference_wrapper | |
2174 | { | |
2175 | typedef _Tp __type; | |
2176 | }; | |
2177 | ||
2178 | template<typename _Tp> | |
2179 | struct __strip_reference_wrapper<reference_wrapper<_Tp> > | |
2180 | { | |
2181 | typedef _Tp& __type; | |
2182 | }; | |
2183 | ||
123c516a PC |
2184 | template<typename _Tp> |
2185 | struct __decay_and_strip | |
2186 | { | |
2187 | typedef typename __strip_reference_wrapper< | |
2188 | typename decay<_Tp>::type>::__type __type; | |
2189 | }; | |
2190 | ||
2191 | ||
123c516a | 2192 | // Primary template. |
13901e4b | 2193 | /// Define a member typedef @c type only if a boolean constant is true. |
123c516a | 2194 | template<bool, typename _Tp = void> |
33ac58d5 | 2195 | struct enable_if |
123c516a PC |
2196 | { }; |
2197 | ||
2198 | // Partial specialization for true. | |
2199 | template<typename _Tp> | |
2200 | struct enable_if<true, _Tp> | |
2201 | { typedef _Tp type; }; | |
2202 | ||
23df8534 JW |
2203 | template<typename... _Cond> |
2204 | using _Require = typename enable_if<__and_<_Cond...>::value>::type; | |
123c516a | 2205 | |
123c516a | 2206 | // Primary template. |
13901e4b | 2207 | /// Define a member typedef @c type to one of two argument types. |
123c516a PC |
2208 | template<bool _Cond, typename _Iftrue, typename _Iffalse> |
2209 | struct conditional | |
2210 | { typedef _Iftrue type; }; | |
2211 | ||
2212 | // Partial specialization for false. | |
2213 | template<typename _Iftrue, typename _Iffalse> | |
2214 | struct conditional<false, _Iftrue, _Iffalse> | |
2215 | { typedef _Iffalse type; }; | |
2216 | ||
f61a12b3 JW |
2217 | // __void_t (std::void_t for C++11) |
2218 | template<typename...> using __void_t = void; | |
2219 | ||
5b9daa7e | 2220 | /// common_type |
cfa9a96b CF |
2221 | template<typename... _Tp> |
2222 | struct common_type; | |
2223 | ||
c0ffa2ba | 2224 | // Sfinae-friendly common_type implementation: |
b3618b71 DK |
2225 | |
2226 | struct __do_common_type_impl | |
2227 | { | |
2228 | template<typename _Tp, typename _Up> | |
f61a12b3 JW |
2229 | using __cond_t |
2230 | = decltype(true ? std::declval<_Tp>() : std::declval<_Up>()); | |
2231 | ||
2232 | template<typename _Tp, typename _Up> | |
2233 | static __success_type<typename decay<__cond_t<_Tp, _Up>>::type> | |
2234 | _S_test(int); | |
b3618b71 DK |
2235 | |
2236 | template<typename, typename> | |
f61a12b3 JW |
2237 | static __failure_type |
2238 | _S_test(...); | |
b3618b71 DK |
2239 | }; |
2240 | ||
f61a12b3 JW |
2241 | // If sizeof...(T) is zero, there shall be no member type. |
2242 | template<> | |
2243 | struct common_type<> | |
2244 | { }; | |
b3618b71 | 2245 | |
f61a12b3 JW |
2246 | // If sizeof...(T) is one, the same type, if any, as common_type_t<T0, T0>. |
2247 | template<typename _Tp0> | |
2248 | struct common_type<_Tp0> | |
2249 | : public common_type<_Tp0, _Tp0> | |
2250 | { }; | |
b3618b71 | 2251 | |
f61a12b3 JW |
2252 | // If sizeof...(T) is two, ... |
2253 | template<typename _Tp1, typename _Tp2, | |
2254 | typename _Dp1 = typename decay<_Tp1>::type, | |
2255 | typename _Dp2 = typename decay<_Tp2>::type> | |
2256 | struct __common_type_impl | |
b3618b71 | 2257 | { |
f61a12b3 JW |
2258 | // If is_same_v<T1, D1> is false or is_same_v<T2, D2> is false, |
2259 | // let C denote the same type, if any, as common_type_t<D1, D2>. | |
2260 | using type = common_type<_Dp1, _Dp2>; | |
b3618b71 DK |
2261 | }; |
2262 | ||
f61a12b3 JW |
2263 | template<typename _Tp1, typename _Tp2> |
2264 | struct __common_type_impl<_Tp1, _Tp2, _Tp1, _Tp2> | |
2265 | : private __do_common_type_impl | |
b3618b71 | 2266 | { |
f61a12b3 JW |
2267 | // Otherwise, if decay_t<decltype(false ? declval<D1>() : declval<D2>())> |
2268 | // denotes a valid type, let C denote that type. | |
2269 | using type = decltype(_S_test<_Tp1, _Tp2>(0)); | |
b3618b71 DK |
2270 | }; |
2271 | ||
f61a12b3 JW |
2272 | // If sizeof...(T) is two, ... |
2273 | template<typename _Tp1, typename _Tp2> | |
2274 | struct common_type<_Tp1, _Tp2> | |
2275 | : public __common_type_impl<_Tp1, _Tp2>::type | |
2276 | { }; | |
b3618b71 | 2277 | |
f61a12b3 JW |
2278 | template<typename...> |
2279 | struct __common_type_pack | |
373c726e JW |
2280 | { }; |
2281 | ||
f61a12b3 JW |
2282 | template<typename, typename, typename = void> |
2283 | struct __common_type_fold; | |
2284 | ||
2285 | // If sizeof...(T) is greater than two, ... | |
2286 | template<typename _Tp1, typename _Tp2, typename... _Rp> | |
2287 | struct common_type<_Tp1, _Tp2, _Rp...> | |
2288 | : public __common_type_fold<common_type<_Tp1, _Tp2>, | |
2289 | __common_type_pack<_Rp...>> | |
373c726e | 2290 | { }; |
cfa9a96b | 2291 | |
f61a12b3 JW |
2292 | // Let C denote the same type, if any, as common_type_t<T1, T2>. |
2293 | // If there is such a type C, type shall denote the same type, if any, | |
2294 | // as common_type_t<C, R...>. | |
2295 | template<typename _CTp, typename... _Rp> | |
2296 | struct __common_type_fold<_CTp, __common_type_pack<_Rp...>, | |
2297 | __void_t<typename _CTp::type>> | |
2298 | : public common_type<typename _CTp::type, _Rp...> | |
b3618b71 | 2299 | { }; |
cfa9a96b | 2300 | |
f61a12b3 JW |
2301 | // Otherwise, there shall be no member type. |
2302 | template<typename _CTp, typename _Rp> | |
2303 | struct __common_type_fold<_CTp, _Rp, void> | |
b3618b71 | 2304 | { }; |
7274deff | 2305 | |
3c26b759 JW |
2306 | template<typename _Tp, bool = is_enum<_Tp>::value> |
2307 | struct __underlying_type_impl | |
2308 | { | |
2309 | using type = __underlying_type(_Tp); | |
2310 | }; | |
2311 | ||
2312 | template<typename _Tp> | |
2313 | struct __underlying_type_impl<_Tp, false> | |
2314 | { }; | |
2315 | ||
13901e4b | 2316 | /// The underlying type of an enum. |
a47407f6 PC |
2317 | template<typename _Tp> |
2318 | struct underlying_type | |
3c26b759 JW |
2319 | : public __underlying_type_impl<_Tp> |
2320 | { }; | |
123c516a | 2321 | |
7274deff PC |
2322 | template<typename _Tp> |
2323 | struct __declval_protector | |
2324 | { | |
2325 | static const bool __stop = false; | |
7274deff PC |
2326 | }; |
2327 | ||
2328 | template<typename _Tp> | |
ec26ff5a | 2329 | auto declval() noexcept -> decltype(__declval<_Tp>(0)) |
7274deff PC |
2330 | { |
2331 | static_assert(__declval_protector<_Tp>::__stop, | |
2332 | "declval() must not be used!"); | |
ec26ff5a | 2333 | return __declval<_Tp>(0); |
7274deff | 2334 | } |
1041daba | 2335 | |
6791489e JW |
2336 | // __remove_cvref_t (std::remove_cvref_t for C++11). |
2337 | template<typename _Tp> | |
2338 | using __remove_cvref_t | |
2339 | = typename remove_cv<typename remove_reference<_Tp>::type>::type; | |
2340 | ||
be7f7822 JW |
2341 | /// result_of |
2342 | template<typename _Signature> | |
2343 | class result_of; | |
2344 | ||
c0ffa2ba | 2345 | // Sfinae-friendly result_of implementation: |
83ddb39f | 2346 | |
a15f7cb8 ESR |
2347 | #define __cpp_lib_result_of_sfinae 201210 |
2348 | ||
93e95400 JW |
2349 | struct __invoke_memfun_ref { }; |
2350 | struct __invoke_memfun_deref { }; | |
2351 | struct __invoke_memobj_ref { }; | |
2352 | struct __invoke_memobj_deref { }; | |
2353 | struct __invoke_other { }; | |
2354 | ||
2355 | // Associate a tag type with a specialization of __success_type. | |
2356 | template<typename _Tp, typename _Tag> | |
2357 | struct __result_of_success : __success_type<_Tp> | |
2358 | { using __invoke_type = _Tag; }; | |
2359 | ||
83ddb39f DK |
2360 | // [func.require] paragraph 1 bullet 1: |
2361 | struct __result_of_memfun_ref_impl | |
2362 | { | |
2363 | template<typename _Fp, typename _Tp1, typename... _Args> | |
93e95400 | 2364 | static __result_of_success<decltype( |
83ddb39f | 2365 | (std::declval<_Tp1>().*std::declval<_Fp>())(std::declval<_Args>()...) |
93e95400 | 2366 | ), __invoke_memfun_ref> _S_test(int); |
83ddb39f DK |
2367 | |
2368 | template<typename...> | |
2369 | static __failure_type _S_test(...); | |
2370 | }; | |
2371 | ||
2372 | template<typename _MemPtr, typename _Arg, typename... _Args> | |
2373 | struct __result_of_memfun_ref | |
2374 | : private __result_of_memfun_ref_impl | |
2375 | { | |
2376 | typedef decltype(_S_test<_MemPtr, _Arg, _Args...>(0)) type; | |
2377 | }; | |
2378 | ||
2379 | // [func.require] paragraph 1 bullet 2: | |
2380 | struct __result_of_memfun_deref_impl | |
2381 | { | |
2382 | template<typename _Fp, typename _Tp1, typename... _Args> | |
93e95400 | 2383 | static __result_of_success<decltype( |
83ddb39f | 2384 | ((*std::declval<_Tp1>()).*std::declval<_Fp>())(std::declval<_Args>()...) |
93e95400 | 2385 | ), __invoke_memfun_deref> _S_test(int); |
83ddb39f DK |
2386 | |
2387 | template<typename...> | |
2388 | static __failure_type _S_test(...); | |
2389 | }; | |
2390 | ||
2391 | template<typename _MemPtr, typename _Arg, typename... _Args> | |
2392 | struct __result_of_memfun_deref | |
2393 | : private __result_of_memfun_deref_impl | |
2394 | { | |
2395 | typedef decltype(_S_test<_MemPtr, _Arg, _Args...>(0)) type; | |
2396 | }; | |
2397 | ||
2398 | // [func.require] paragraph 1 bullet 3: | |
2399 | struct __result_of_memobj_ref_impl | |
2400 | { | |
2401 | template<typename _Fp, typename _Tp1> | |
93e95400 | 2402 | static __result_of_success<decltype( |
83ddb39f | 2403 | std::declval<_Tp1>().*std::declval<_Fp>() |
93e95400 | 2404 | ), __invoke_memobj_ref> _S_test(int); |
83ddb39f DK |
2405 | |
2406 | template<typename, typename> | |
2407 | static __failure_type _S_test(...); | |
2408 | }; | |
2409 | ||
2410 | template<typename _MemPtr, typename _Arg> | |
2411 | struct __result_of_memobj_ref | |
2412 | : private __result_of_memobj_ref_impl | |
2413 | { | |
2414 | typedef decltype(_S_test<_MemPtr, _Arg>(0)) type; | |
2415 | }; | |
2416 | ||
2417 | // [func.require] paragraph 1 bullet 4: | |
2418 | struct __result_of_memobj_deref_impl | |
2419 | { | |
2420 | template<typename _Fp, typename _Tp1> | |
93e95400 | 2421 | static __result_of_success<decltype( |
83ddb39f | 2422 | (*std::declval<_Tp1>()).*std::declval<_Fp>() |
93e95400 | 2423 | ), __invoke_memobj_deref> _S_test(int); |
83ddb39f DK |
2424 | |
2425 | template<typename, typename> | |
2426 | static __failure_type _S_test(...); | |
2427 | }; | |
2428 | ||
be7f7822 | 2429 | template<typename _MemPtr, typename _Arg> |
83ddb39f DK |
2430 | struct __result_of_memobj_deref |
2431 | : private __result_of_memobj_deref_impl | |
2432 | { | |
2433 | typedef decltype(_S_test<_MemPtr, _Arg>(0)) type; | |
2434 | }; | |
2435 | ||
2436 | template<typename _MemPtr, typename _Arg> | |
2437 | struct __result_of_memobj; | |
be7f7822 JW |
2438 | |
2439 | template<typename _Res, typename _Class, typename _Arg> | |
83ddb39f | 2440 | struct __result_of_memobj<_Res _Class::*, _Arg> |
be7f7822 | 2441 | { |
6791489e | 2442 | typedef __remove_cvref_t<_Arg> _Argval; |
83ddb39f DK |
2443 | typedef _Res _Class::* _MemPtr; |
2444 | typedef typename conditional<__or_<is_same<_Argval, _Class>, | |
2445 | is_base_of<_Class, _Argval>>::value, | |
2446 | __result_of_memobj_ref<_MemPtr, _Arg>, | |
2447 | __result_of_memobj_deref<_MemPtr, _Arg> | |
2448 | >::type::type type; | |
be7f7822 JW |
2449 | }; |
2450 | ||
83ddb39f DK |
2451 | template<typename _MemPtr, typename _Arg, typename... _Args> |
2452 | struct __result_of_memfun; | |
be7f7822 JW |
2453 | |
2454 | template<typename _Res, typename _Class, typename _Arg, typename... _Args> | |
83ddb39f | 2455 | struct __result_of_memfun<_Res _Class::*, _Arg, _Args...> |
be7f7822 | 2456 | { |
81c7cf71 | 2457 | typedef typename remove_reference<_Arg>::type _Argval; |
83ddb39f | 2458 | typedef _Res _Class::* _MemPtr; |
81c7cf71 | 2459 | typedef typename conditional<is_base_of<_Class, _Argval>::value, |
83ddb39f DK |
2460 | __result_of_memfun_ref<_MemPtr, _Arg, _Args...>, |
2461 | __result_of_memfun_deref<_MemPtr, _Arg, _Args...> | |
2462 | >::type::type type; | |
be7f7822 JW |
2463 | }; |
2464 | ||
93e95400 JW |
2465 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
2466 | // 2219. INVOKE-ing a pointer to member with a reference_wrapper | |
2467 | // as the object expression | |
93e95400 | 2468 | |
7dcc645c | 2469 | // Used by result_of, invoke etc. to unwrap a reference_wrapper. |
81c7cf71 | 2470 | template<typename _Tp, typename _Up = __remove_cvref_t<_Tp>> |
7dcc645c JW |
2471 | struct __inv_unwrap |
2472 | { | |
2473 | using type = _Tp; | |
2474 | }; | |
f3d7dd52 | 2475 | |
7dcc645c JW |
2476 | template<typename _Tp, typename _Up> |
2477 | struct __inv_unwrap<_Tp, reference_wrapper<_Up>> | |
2478 | { | |
2479 | using type = _Up&; | |
2480 | }; | |
93e95400 | 2481 | |
be7f7822 | 2482 | template<bool, bool, typename _Functor, typename... _ArgTypes> |
83ddb39f | 2483 | struct __result_of_impl |
be7f7822 | 2484 | { |
83ddb39f | 2485 | typedef __failure_type type; |
be7f7822 JW |
2486 | }; |
2487 | ||
2488 | template<typename _MemPtr, typename _Arg> | |
83ddb39f | 2489 | struct __result_of_impl<true, false, _MemPtr, _Arg> |
7dcc645c JW |
2490 | : public __result_of_memobj<typename decay<_MemPtr>::type, |
2491 | typename __inv_unwrap<_Arg>::type> | |
c4db9a77 | 2492 | { }; |
be7f7822 | 2493 | |
83ddb39f DK |
2494 | template<typename _MemPtr, typename _Arg, typename... _Args> |
2495 | struct __result_of_impl<false, true, _MemPtr, _Arg, _Args...> | |
7dcc645c JW |
2496 | : public __result_of_memfun<typename decay<_MemPtr>::type, |
2497 | typename __inv_unwrap<_Arg>::type, _Args...> | |
c4db9a77 | 2498 | { }; |
be7f7822 | 2499 | |
83ddb39f DK |
2500 | // [func.require] paragraph 1 bullet 5: |
2501 | struct __result_of_other_impl | |
2502 | { | |
2503 | template<typename _Fn, typename... _Args> | |
93e95400 | 2504 | static __result_of_success<decltype( |
83ddb39f | 2505 | std::declval<_Fn>()(std::declval<_Args>()...) |
93e95400 | 2506 | ), __invoke_other> _S_test(int); |
83ddb39f DK |
2507 | |
2508 | template<typename...> | |
2509 | static __failure_type _S_test(...); | |
2510 | }; | |
2511 | ||
be7f7822 | 2512 | template<typename _Functor, typename... _ArgTypes> |
83ddb39f DK |
2513 | struct __result_of_impl<false, false, _Functor, _ArgTypes...> |
2514 | : private __result_of_other_impl | |
be7f7822 | 2515 | { |
83ddb39f | 2516 | typedef decltype(_S_test<_Functor, _ArgTypes...>(0)) type; |
be7f7822 JW |
2517 | }; |
2518 | ||
7dcc645c | 2519 | // __invoke_result (std::invoke_result for C++11) |
83ddb39f | 2520 | template<typename _Functor, typename... _ArgTypes> |
7dcc645c | 2521 | struct __invoke_result |
83ddb39f DK |
2522 | : public __result_of_impl< |
2523 | is_member_object_pointer< | |
2524 | typename remove_reference<_Functor>::type | |
2525 | >::value, | |
2526 | is_member_function_pointer< | |
2527 | typename remove_reference<_Functor>::type | |
2528 | >::value, | |
7dcc645c | 2529 | _Functor, _ArgTypes... |
83ddb39f DK |
2530 | >::type |
2531 | { }; | |
c0ffa2ba | 2532 | |
7dcc645c JW |
2533 | template<typename _Functor, typename... _ArgTypes> |
2534 | struct result_of<_Functor(_ArgTypes...)> | |
2535 | : public __invoke_result<_Functor, _ArgTypes...> | |
2536 | { }; | |
2537 | ||
e112d53a | 2538 | #if __cplusplus >= 201402L |
4457e88c JW |
2539 | /// Alias template for aligned_storage |
2540 | template<size_t _Len, size_t _Align = | |
2541 | __alignof__(typename __aligned_storage_msa<_Len>::__type)> | |
2542 | using aligned_storage_t = typename aligned_storage<_Len, _Align>::type; | |
2543 | ||
d3718027 RS |
2544 | template <size_t _Len, typename... _Types> |
2545 | using aligned_union_t = typename aligned_union<_Len, _Types...>::type; | |
2546 | ||
4457e88c JW |
2547 | /// Alias template for decay |
2548 | template<typename _Tp> | |
2549 | using decay_t = typename decay<_Tp>::type; | |
2550 | ||
2551 | /// Alias template for enable_if | |
2552 | template<bool _Cond, typename _Tp = void> | |
2553 | using enable_if_t = typename enable_if<_Cond, _Tp>::type; | |
2554 | ||
2555 | /// Alias template for conditional | |
2556 | template<bool _Cond, typename _Iftrue, typename _Iffalse> | |
2557 | using conditional_t = typename conditional<_Cond, _Iftrue, _Iffalse>::type; | |
2558 | ||
2559 | /// Alias template for common_type | |
2560 | template<typename... _Tp> | |
2561 | using common_type_t = typename common_type<_Tp...>::type; | |
2562 | ||
2563 | /// Alias template for underlying_type | |
2564 | template<typename _Tp> | |
2565 | using underlying_type_t = typename underlying_type<_Tp>::type; | |
2566 | ||
2567 | /// Alias template for result_of | |
2568 | template<typename _Tp> | |
2569 | using result_of_t = typename result_of<_Tp>::type; | |
e112d53a JW |
2570 | #endif // C++14 |
2571 | ||
2572 | // __enable_if_t (std::enable_if_t for C++11) | |
2573 | template<bool _Cond, typename _Tp = void> | |
2574 | using __enable_if_t = typename enable_if<_Cond, _Tp>::type; | |
4457e88c | 2575 | |
e112d53a | 2576 | #if __cplusplus >= 201703L || !defined(__STRICT_ANSI__) // c++17 or gnu++11 |
bd1eb5e0 JW |
2577 | #define __cpp_lib_void_t 201411 |
2578 | /// A metafunction that always yields void, used for detecting valid types. | |
2579 | template<typename...> using void_t = void; | |
2580 | #endif | |
2581 | ||
6af6bef4 JW |
2582 | /// Implementation of the detection idiom (negative case). |
2583 | template<typename _Default, typename _AlwaysVoid, | |
2584 | template<typename...> class _Op, typename... _Args> | |
2585 | struct __detector | |
2586 | { | |
2587 | using value_t = false_type; | |
2588 | using type = _Default; | |
2589 | }; | |
2590 | ||
2591 | /// Implementation of the detection idiom (positive case). | |
2592 | template<typename _Default, template<typename...> class _Op, | |
2593 | typename... _Args> | |
2594 | struct __detector<_Default, __void_t<_Op<_Args...>>, _Op, _Args...> | |
2595 | { | |
2596 | using value_t = true_type; | |
2597 | using type = _Op<_Args...>; | |
2598 | }; | |
2599 | ||
2600 | // Detect whether _Op<_Args...> is a valid type, use _Default if not. | |
2601 | template<typename _Default, template<typename...> class _Op, | |
2602 | typename... _Args> | |
2603 | using __detected_or = __detector<_Default, void, _Op, _Args...>; | |
2604 | ||
2605 | // _Op<_Args...> if that is a valid type, otherwise _Default. | |
2606 | template<typename _Default, template<typename...> class _Op, | |
2607 | typename... _Args> | |
2608 | using __detected_or_t | |
2609 | = typename __detected_or<_Default, _Op, _Args...>::type; | |
2610 | ||
c0ffa2ba | 2611 | /// @} group metaprogramming |
847e9cf8 | 2612 | |
033b71ce PC |
2613 | /** |
2614 | * Use SFINAE to determine if the type _Tp has a publicly-accessible | |
2615 | * member type _NTYPE. | |
2616 | */ | |
82b12c4b | 2617 | #define _GLIBCXX_HAS_NESTED_TYPE(_NTYPE) \ |
847e9cf8 | 2618 | template<typename _Tp, typename = __void_t<>> \ |
82b12c4b | 2619 | struct __has_##_NTYPE \ |
847e9cf8 JW |
2620 | : false_type \ |
2621 | { }; \ | |
2622 | template<typename _Tp> \ | |
2623 | struct __has_##_NTYPE<_Tp, __void_t<typename _Tp::_NTYPE>> \ | |
2624 | : true_type \ | |
033b71ce PC |
2625 | { }; |
2626 | ||
26b5ace7 DK |
2627 | template <typename _Tp> |
2628 | struct __is_swappable; | |
ddb63209 | 2629 | |
26b5ace7 DK |
2630 | template <typename _Tp> |
2631 | struct __is_nothrow_swappable; | |
ddb63209 | 2632 | |
a2863bde VV |
2633 | template<typename... _Elements> |
2634 | class tuple; | |
2635 | ||
2636 | template<typename> | |
2637 | struct __is_tuple_like_impl : false_type | |
2638 | { }; | |
2639 | ||
2640 | template<typename... _Tps> | |
2641 | struct __is_tuple_like_impl<tuple<_Tps...>> : true_type | |
2642 | { }; | |
2643 | ||
2644 | // Internal type trait that allows us to sfinae-protect tuple_cat. | |
2645 | template<typename _Tp> | |
2646 | struct __is_tuple_like | |
6791489e | 2647 | : public __is_tuple_like_impl<__remove_cvref_t<_Tp>>::type |
a2863bde VV |
2648 | { }; |
2649 | ||
ddb63209 VV |
2650 | template<typename _Tp> |
2651 | inline | |
a2863bde VV |
2652 | typename enable_if<__and_<__not_<__is_tuple_like<_Tp>>, |
2653 | is_move_constructible<_Tp>, | |
ddb63209 VV |
2654 | is_move_assignable<_Tp>>::value>::type |
2655 | swap(_Tp&, _Tp&) | |
2656 | noexcept(__and_<is_nothrow_move_constructible<_Tp>, | |
2657 | is_nothrow_move_assignable<_Tp>>::value); | |
2658 | ||
2659 | template<typename _Tp, size_t _Nm> | |
2660 | inline | |
26b5ace7 | 2661 | typename enable_if<__is_swappable<_Tp>::value>::type |
ddb63209 | 2662 | swap(_Tp (&__a)[_Nm], _Tp (&__b)[_Nm]) |
26b5ace7 | 2663 | noexcept(__is_nothrow_swappable<_Tp>::value); |
ddb63209 | 2664 | |
26b5ace7 | 2665 | namespace __swappable_details { |
ddb63209 VV |
2666 | using std::swap; |
2667 | ||
26b5ace7 DK |
2668 | struct __do_is_swappable_impl |
2669 | { | |
2670 | template<typename _Tp, typename | |
2671 | = decltype(swap(std::declval<_Tp&>(), std::declval<_Tp&>()))> | |
2672 | static true_type __test(int); | |
2673 | ||
2674 | template<typename> | |
2675 | static false_type __test(...); | |
2676 | }; | |
2677 | ||
2678 | struct __do_is_nothrow_swappable_impl | |
2679 | { | |
2680 | template<typename _Tp> | |
2681 | static __bool_constant< | |
2682 | noexcept(swap(std::declval<_Tp&>(), std::declval<_Tp&>())) | |
2683 | > __test(int); | |
2684 | ||
2685 | template<typename> | |
2686 | static false_type __test(...); | |
2687 | }; | |
2688 | ||
6b9539e2 | 2689 | } // namespace __swappable_details |
ddb63209 | 2690 | |
26b5ace7 DK |
2691 | template<typename _Tp> |
2692 | struct __is_swappable_impl | |
2693 | : public __swappable_details::__do_is_swappable_impl | |
2694 | { | |
2695 | typedef decltype(__test<_Tp>(0)) type; | |
2696 | }; | |
2697 | ||
2698 | template<typename _Tp> | |
ddb63209 | 2699 | struct __is_nothrow_swappable_impl |
26b5ace7 DK |
2700 | : public __swappable_details::__do_is_nothrow_swappable_impl |
2701 | { | |
2702 | typedef decltype(__test<_Tp>(0)) type; | |
2703 | }; | |
ddb63209 | 2704 | |
26b5ace7 DK |
2705 | template<typename _Tp> |
2706 | struct __is_swappable | |
2707 | : public __is_swappable_impl<_Tp>::type | |
ddb63209 VV |
2708 | { }; |
2709 | ||
26b5ace7 | 2710 | template<typename _Tp> |
ddb63209 | 2711 | struct __is_nothrow_swappable |
26b5ace7 | 2712 | : public __is_nothrow_swappable_impl<_Tp>::type |
ddb63209 VV |
2713 | { }; |
2714 | ||
6b9539e2 DK |
2715 | #if __cplusplus > 201402L || !defined(__STRICT_ANSI__) // c++1z or gnu++11 |
2716 | #define __cpp_lib_is_swappable 201603 | |
2717 | /// Metafunctions used for detecting swappable types: p0185r1 | |
2718 | ||
2719 | /// is_swappable | |
2720 | template<typename _Tp> | |
2721 | struct is_swappable | |
2722 | : public __is_swappable_impl<_Tp>::type | |
608a080c AP |
2723 | { |
2724 | static_assert(std::__is_complete_or_unbounded(__type_identity<_Tp>{}), | |
2725 | "template argument must be a complete class or an unbounded array"); | |
2726 | }; | |
6b9539e2 DK |
2727 | |
2728 | /// is_nothrow_swappable | |
2729 | template<typename _Tp> | |
2730 | struct is_nothrow_swappable | |
2731 | : public __is_nothrow_swappable_impl<_Tp>::type | |
608a080c AP |
2732 | { |
2733 | static_assert(std::__is_complete_or_unbounded(__type_identity<_Tp>{}), | |
2734 | "template argument must be a complete class or an unbounded array"); | |
2735 | }; | |
6b9539e2 DK |
2736 | |
2737 | #if __cplusplus >= 201402L | |
2738 | /// is_swappable_v | |
2739 | template<typename _Tp> | |
288695f7 DK |
2740 | _GLIBCXX17_INLINE constexpr bool is_swappable_v = |
2741 | is_swappable<_Tp>::value; | |
6b9539e2 DK |
2742 | |
2743 | /// is_nothrow_swappable_v | |
2744 | template<typename _Tp> | |
288695f7 DK |
2745 | _GLIBCXX17_INLINE constexpr bool is_nothrow_swappable_v = |
2746 | is_nothrow_swappable<_Tp>::value; | |
6b9539e2 DK |
2747 | #endif // __cplusplus >= 201402L |
2748 | ||
2749 | namespace __swappable_with_details { | |
2750 | using std::swap; | |
2751 | ||
2752 | struct __do_is_swappable_with_impl | |
2753 | { | |
2754 | template<typename _Tp, typename _Up, typename | |
2755 | = decltype(swap(std::declval<_Tp>(), std::declval<_Up>())), | |
2756 | typename | |
2757 | = decltype(swap(std::declval<_Up>(), std::declval<_Tp>()))> | |
2758 | static true_type __test(int); | |
2759 | ||
2760 | template<typename, typename> | |
2761 | static false_type __test(...); | |
2762 | }; | |
2763 | ||
2764 | struct __do_is_nothrow_swappable_with_impl | |
2765 | { | |
2766 | template<typename _Tp, typename _Up> | |
2767 | static __bool_constant< | |
2768 | noexcept(swap(std::declval<_Tp>(), std::declval<_Up>())) | |
2769 | && | |
2770 | noexcept(swap(std::declval<_Up>(), std::declval<_Tp>())) | |
2771 | > __test(int); | |
2772 | ||
2773 | template<typename, typename> | |
2774 | static false_type __test(...); | |
2775 | }; | |
2776 | ||
2777 | } // namespace __swappable_with_details | |
2778 | ||
2779 | template<typename _Tp, typename _Up> | |
2780 | struct __is_swappable_with_impl | |
2781 | : public __swappable_with_details::__do_is_swappable_with_impl | |
2782 | { | |
2783 | typedef decltype(__test<_Tp, _Up>(0)) type; | |
2784 | }; | |
2785 | ||
2786 | // Optimization for the homogenous lvalue case, not required: | |
2787 | template<typename _Tp> | |
2788 | struct __is_swappable_with_impl<_Tp&, _Tp&> | |
2789 | : public __swappable_details::__do_is_swappable_impl | |
2790 | { | |
2791 | typedef decltype(__test<_Tp&>(0)) type; | |
2792 | }; | |
2793 | ||
2794 | template<typename _Tp, typename _Up> | |
2795 | struct __is_nothrow_swappable_with_impl | |
2796 | : public __swappable_with_details::__do_is_nothrow_swappable_with_impl | |
2797 | { | |
2798 | typedef decltype(__test<_Tp, _Up>(0)) type; | |
2799 | }; | |
2800 | ||
2801 | // Optimization for the homogenous lvalue case, not required: | |
2802 | template<typename _Tp> | |
2803 | struct __is_nothrow_swappable_with_impl<_Tp&, _Tp&> | |
2804 | : public __swappable_details::__do_is_nothrow_swappable_impl | |
2805 | { | |
2806 | typedef decltype(__test<_Tp&>(0)) type; | |
2807 | }; | |
2808 | ||
2809 | /// is_swappable_with | |
2810 | template<typename _Tp, typename _Up> | |
2811 | struct is_swappable_with | |
2812 | : public __is_swappable_with_impl<_Tp, _Up>::type | |
2813 | { }; | |
2814 | ||
2815 | /// is_nothrow_swappable_with | |
2816 | template<typename _Tp, typename _Up> | |
2817 | struct is_nothrow_swappable_with | |
2818 | : public __is_nothrow_swappable_with_impl<_Tp, _Up>::type | |
2819 | { }; | |
2820 | ||
2821 | #if __cplusplus >= 201402L | |
2822 | /// is_swappable_with_v | |
2823 | template<typename _Tp, typename _Up> | |
288695f7 DK |
2824 | _GLIBCXX17_INLINE constexpr bool is_swappable_with_v = |
2825 | is_swappable_with<_Tp, _Up>::value; | |
6b9539e2 DK |
2826 | |
2827 | /// is_nothrow_swappable_with_v | |
2828 | template<typename _Tp, typename _Up> | |
288695f7 | 2829 | _GLIBCXX17_INLINE constexpr bool is_nothrow_swappable_with_v = |
6b9539e2 DK |
2830 | is_nothrow_swappable_with<_Tp, _Up>::value; |
2831 | #endif // __cplusplus >= 201402L | |
137422c8 | 2832 | |
42183d03 JW |
2833 | #endif// c++1z or gnu++11 |
2834 | ||
7dcc645c | 2835 | // __is_invocable (std::is_invocable for C++11) |
42183d03 | 2836 | |
7dcc645c JW |
2837 | template<typename _Result, typename _Ret, typename = void> |
2838 | struct __is_invocable_impl : false_type { }; | |
42183d03 JW |
2839 | |
2840 | template<typename _Result, typename _Ret> | |
7dcc645c | 2841 | struct __is_invocable_impl<_Result, _Ret, __void_t<typename _Result::type>> |
91d01b33 | 2842 | : __or_<is_void<_Ret>, is_convertible<typename _Result::type, _Ret>>::type |
42183d03 JW |
2843 | { }; |
2844 | ||
7dcc645c JW |
2845 | template<typename _Fn, typename... _ArgTypes> |
2846 | struct __is_invocable | |
2847 | : __is_invocable_impl<__invoke_result<_Fn, _ArgTypes...>, void>::type | |
42183d03 JW |
2848 | { }; |
2849 | ||
42183d03 JW |
2850 | template<typename _Fn, typename _Tp, typename... _Args> |
2851 | constexpr bool __call_is_nt(__invoke_memfun_ref) | |
2852 | { | |
2853 | using _Up = typename __inv_unwrap<_Tp>::type; | |
2854 | return noexcept((std::declval<_Up>().*std::declval<_Fn>())( | |
2855 | std::declval<_Args>()...)); | |
2856 | } | |
2857 | ||
2858 | template<typename _Fn, typename _Tp, typename... _Args> | |
2859 | constexpr bool __call_is_nt(__invoke_memfun_deref) | |
2860 | { | |
2861 | return noexcept(((*std::declval<_Tp>()).*std::declval<_Fn>())( | |
2862 | std::declval<_Args>()...)); | |
2863 | } | |
2864 | ||
2865 | template<typename _Fn, typename _Tp> | |
2866 | constexpr bool __call_is_nt(__invoke_memobj_ref) | |
2867 | { | |
2868 | using _Up = typename __inv_unwrap<_Tp>::type; | |
2869 | return noexcept(std::declval<_Up>().*std::declval<_Fn>()); | |
2870 | } | |
2871 | ||
2872 | template<typename _Fn, typename _Tp> | |
2873 | constexpr bool __call_is_nt(__invoke_memobj_deref) | |
2874 | { | |
2875 | return noexcept((*std::declval<_Tp>()).*std::declval<_Fn>()); | |
2876 | } | |
2877 | ||
2878 | template<typename _Fn, typename... _Args> | |
2879 | constexpr bool __call_is_nt(__invoke_other) | |
2880 | { | |
2881 | return noexcept(std::declval<_Fn>()(std::declval<_Args>()...)); | |
2882 | } | |
2883 | ||
7dcc645c | 2884 | template<typename _Result, typename _Fn, typename... _Args> |
42183d03 JW |
2885 | struct __call_is_nothrow |
2886 | : __bool_constant< | |
7dcc645c JW |
2887 | std::__call_is_nt<_Fn, _Args...>(typename _Result::__invoke_type{}) |
2888 | > | |
42183d03 JW |
2889 | { }; |
2890 | ||
7dcc645c JW |
2891 | template<typename _Fn, typename... _Args> |
2892 | using __call_is_nothrow_ | |
2893 | = __call_is_nothrow<__invoke_result<_Fn, _Args...>, _Fn, _Args...>; | |
42183d03 | 2894 | |
7dcc645c JW |
2895 | // __is_nothrow_invocable (std::is_nothrow_invocable for C++11) |
2896 | template<typename _Fn, typename... _Args> | |
2897 | struct __is_nothrow_invocable | |
2898 | : __and_<__is_invocable<_Fn, _Args...>, | |
2899 | __call_is_nothrow_<_Fn, _Args...>>::type | |
42183d03 JW |
2900 | { }; |
2901 | ||
cc28d234 JW |
2902 | #pragma GCC diagnostic push |
2903 | #pragma GCC diagnostic ignored "-Wctor-dtor-privacy" | |
a73d2fa8 NDR |
2904 | struct __nonesuchbase {}; |
2905 | struct __nonesuch : private __nonesuchbase { | |
f524d5b3 VV |
2906 | ~__nonesuch() = delete; |
2907 | __nonesuch(__nonesuch const&) = delete; | |
2908 | void operator=(__nonesuch const&) = delete; | |
2909 | }; | |
cc28d234 | 2910 | #pragma GCC diagnostic pop |
f524d5b3 | 2911 | |
e641ee43 | 2912 | #if __cplusplus >= 201703L |
7dcc645c JW |
2913 | # define __cpp_lib_is_invocable 201703 |
2914 | ||
2915 | /// std::invoke_result | |
2916 | template<typename _Functor, typename... _ArgTypes> | |
2917 | struct invoke_result | |
2918 | : public __invoke_result<_Functor, _ArgTypes...> | |
2919 | { }; | |
2920 | ||
2921 | /// std::invoke_result_t | |
2922 | template<typename _Fn, typename... _Args> | |
2923 | using invoke_result_t = typename invoke_result<_Fn, _Args...>::type; | |
42183d03 | 2924 | |
7dcc645c JW |
2925 | /// std::is_invocable |
2926 | template<typename _Fn, typename... _ArgTypes> | |
2927 | struct is_invocable | |
2928 | : __is_invocable_impl<__invoke_result<_Fn, _ArgTypes...>, void>::type | |
608a080c AP |
2929 | { |
2930 | static_assert(std::__is_complete_or_unbounded(__type_identity<_Fn>{}), | |
2931 | "_Fn must be a complete class or an unbounded array"); | |
2932 | }; | |
42183d03 | 2933 | |
7dcc645c JW |
2934 | /// std::is_invocable_r |
2935 | template<typename _Ret, typename _Fn, typename... _ArgTypes> | |
2936 | struct is_invocable_r | |
2937 | : __is_invocable_impl<__invoke_result<_Fn, _ArgTypes...>, _Ret>::type | |
608a080c AP |
2938 | { |
2939 | static_assert(std::__is_complete_or_unbounded(__type_identity<_Fn>{}), | |
2940 | "_Fn must be a complete class or an unbounded array"); | |
2941 | }; | |
42183d03 | 2942 | |
7dcc645c JW |
2943 | /// std::is_nothrow_invocable |
2944 | template<typename _Fn, typename... _ArgTypes> | |
2945 | struct is_nothrow_invocable | |
2946 | : __and_<__is_invocable_impl<__invoke_result<_Fn, _ArgTypes...>, void>, | |
608a080c AP |
2947 | __call_is_nothrow_<_Fn, _ArgTypes...>>::type |
2948 | { | |
2949 | static_assert(std::__is_complete_or_unbounded(__type_identity<_Fn>{}), | |
2950 | "_Fn must be a complete class or an unbounded array"); | |
2951 | }; | |
42183d03 | 2952 | |
c4b06e7f JW |
2953 | template<typename _Result, typename _Ret, typename = void> |
2954 | struct __is_nt_invocable_impl : false_type { }; | |
2955 | ||
2956 | template<typename _Result, typename _Ret> | |
2957 | struct __is_nt_invocable_impl<_Result, _Ret, | |
2958 | __void_t<typename _Result::type>> | |
91d01b33 | 2959 | : __or_<is_void<_Ret>, |
ce9f305e | 2960 | __is_nothrow_convertible<typename _Result::type, _Ret>> |
c4b06e7f JW |
2961 | { }; |
2962 | ||
7dcc645c JW |
2963 | /// std::is_nothrow_invocable_r |
2964 | template<typename _Ret, typename _Fn, typename... _ArgTypes> | |
2965 | struct is_nothrow_invocable_r | |
c4b06e7f | 2966 | : __and_<__is_nt_invocable_impl<__invoke_result<_Fn, _ArgTypes...>, _Ret>, |
7dcc645c | 2967 | __call_is_nothrow_<_Fn, _ArgTypes...>>::type |
42183d03 JW |
2968 | { }; |
2969 | ||
7dcc645c JW |
2970 | /// std::is_invocable_v |
2971 | template<typename _Fn, typename... _Args> | |
2972 | inline constexpr bool is_invocable_v = is_invocable<_Fn, _Args...>::value; | |
42183d03 | 2973 | |
7dcc645c JW |
2974 | /// std::is_nothrow_invocable_v |
2975 | template<typename _Fn, typename... _Args> | |
2976 | inline constexpr bool is_nothrow_invocable_v | |
2977 | = is_nothrow_invocable<_Fn, _Args...>::value; | |
42183d03 | 2978 | |
7dcc645c | 2979 | /// std::is_invocable_r_v |
ce9f305e | 2980 | template<typename _Ret, typename _Fn, typename... _Args> |
7dcc645c | 2981 | inline constexpr bool is_invocable_r_v |
ce9f305e | 2982 | = is_invocable_r<_Ret, _Fn, _Args...>::value; |
7dcc645c JW |
2983 | |
2984 | /// std::is_nothrow_invocable_r_v | |
ce9f305e | 2985 | template<typename _Ret, typename _Fn, typename... _Args> |
7dcc645c | 2986 | inline constexpr bool is_nothrow_invocable_r_v |
ce9f305e | 2987 | = is_nothrow_invocable_r<_Ret, _Fn, _Args...>::value; |
7dcc645c | 2988 | #endif // C++17 |
42183d03 | 2989 | |
e641ee43 | 2990 | #if __cplusplus >= 201703L |
068c8ac1 | 2991 | # define __cpp_lib_type_trait_variable_templates 201510L |
137422c8 | 2992 | template <typename _Tp> |
288695f7 | 2993 | inline constexpr bool is_void_v = is_void<_Tp>::value; |
137422c8 | 2994 | template <typename _Tp> |
288695f7 | 2995 | inline constexpr bool is_null_pointer_v = is_null_pointer<_Tp>::value; |
137422c8 | 2996 | template <typename _Tp> |
288695f7 | 2997 | inline constexpr bool is_integral_v = is_integral<_Tp>::value; |
137422c8 | 2998 | template <typename _Tp> |
288695f7 | 2999 | inline constexpr bool is_floating_point_v = is_floating_point<_Tp>::value; |
137422c8 | 3000 | template <typename _Tp> |
288695f7 | 3001 | inline constexpr bool is_array_v = is_array<_Tp>::value; |
137422c8 | 3002 | template <typename _Tp> |
288695f7 | 3003 | inline constexpr bool is_pointer_v = is_pointer<_Tp>::value; |
137422c8 | 3004 | template <typename _Tp> |
288695f7 DK |
3005 | inline constexpr bool is_lvalue_reference_v = |
3006 | is_lvalue_reference<_Tp>::value; | |
137422c8 | 3007 | template <typename _Tp> |
288695f7 DK |
3008 | inline constexpr bool is_rvalue_reference_v = |
3009 | is_rvalue_reference<_Tp>::value; | |
137422c8 | 3010 | template <typename _Tp> |
288695f7 | 3011 | inline constexpr bool is_member_object_pointer_v = |
137422c8 VV |
3012 | is_member_object_pointer<_Tp>::value; |
3013 | template <typename _Tp> | |
288695f7 | 3014 | inline constexpr bool is_member_function_pointer_v = |
137422c8 VV |
3015 | is_member_function_pointer<_Tp>::value; |
3016 | template <typename _Tp> | |
288695f7 | 3017 | inline constexpr bool is_enum_v = is_enum<_Tp>::value; |
137422c8 | 3018 | template <typename _Tp> |
288695f7 | 3019 | inline constexpr bool is_union_v = is_union<_Tp>::value; |
137422c8 | 3020 | template <typename _Tp> |
288695f7 | 3021 | inline constexpr bool is_class_v = is_class<_Tp>::value; |
137422c8 | 3022 | template <typename _Tp> |
288695f7 | 3023 | inline constexpr bool is_function_v = is_function<_Tp>::value; |
137422c8 | 3024 | template <typename _Tp> |
288695f7 | 3025 | inline constexpr bool is_reference_v = is_reference<_Tp>::value; |
137422c8 | 3026 | template <typename _Tp> |
288695f7 | 3027 | inline constexpr bool is_arithmetic_v = is_arithmetic<_Tp>::value; |
137422c8 | 3028 | template <typename _Tp> |
288695f7 | 3029 | inline constexpr bool is_fundamental_v = is_fundamental<_Tp>::value; |
137422c8 | 3030 | template <typename _Tp> |
288695f7 | 3031 | inline constexpr bool is_object_v = is_object<_Tp>::value; |
137422c8 | 3032 | template <typename _Tp> |
288695f7 | 3033 | inline constexpr bool is_scalar_v = is_scalar<_Tp>::value; |
137422c8 | 3034 | template <typename _Tp> |
288695f7 | 3035 | inline constexpr bool is_compound_v = is_compound<_Tp>::value; |
137422c8 | 3036 | template <typename _Tp> |
288695f7 | 3037 | inline constexpr bool is_member_pointer_v = is_member_pointer<_Tp>::value; |
137422c8 | 3038 | template <typename _Tp> |
288695f7 | 3039 | inline constexpr bool is_const_v = is_const<_Tp>::value; |
137422c8 | 3040 | template <typename _Tp> |
288695f7 | 3041 | inline constexpr bool is_volatile_v = is_volatile<_Tp>::value; |
137422c8 | 3042 | template <typename _Tp> |
288695f7 | 3043 | inline constexpr bool is_trivial_v = is_trivial<_Tp>::value; |
137422c8 | 3044 | template <typename _Tp> |
288695f7 DK |
3045 | inline constexpr bool is_trivially_copyable_v = |
3046 | is_trivially_copyable<_Tp>::value; | |
137422c8 | 3047 | template <typename _Tp> |
288695f7 | 3048 | inline constexpr bool is_standard_layout_v = is_standard_layout<_Tp>::value; |
137422c8 | 3049 | template <typename _Tp> |
288695f7 | 3050 | inline constexpr bool is_pod_v = is_pod<_Tp>::value; |
137422c8 | 3051 | template <typename _Tp> |
288695f7 | 3052 | inline constexpr bool is_literal_type_v = is_literal_type<_Tp>::value; |
137422c8 | 3053 | template <typename _Tp> |
288695f7 | 3054 | inline constexpr bool is_empty_v = is_empty<_Tp>::value; |
137422c8 | 3055 | template <typename _Tp> |
288695f7 | 3056 | inline constexpr bool is_polymorphic_v = is_polymorphic<_Tp>::value; |
137422c8 | 3057 | template <typename _Tp> |
288695f7 | 3058 | inline constexpr bool is_abstract_v = is_abstract<_Tp>::value; |
137422c8 | 3059 | template <typename _Tp> |
288695f7 | 3060 | inline constexpr bool is_final_v = is_final<_Tp>::value; |
137422c8 | 3061 | template <typename _Tp> |
288695f7 | 3062 | inline constexpr bool is_signed_v = is_signed<_Tp>::value; |
137422c8 | 3063 | template <typename _Tp> |
288695f7 | 3064 | inline constexpr bool is_unsigned_v = is_unsigned<_Tp>::value; |
137422c8 | 3065 | template <typename _Tp, typename... _Args> |
288695f7 DK |
3066 | inline constexpr bool is_constructible_v = |
3067 | is_constructible<_Tp, _Args...>::value; | |
137422c8 | 3068 | template <typename _Tp> |
288695f7 | 3069 | inline constexpr bool is_default_constructible_v = |
137422c8 VV |
3070 | is_default_constructible<_Tp>::value; |
3071 | template <typename _Tp> | |
288695f7 DK |
3072 | inline constexpr bool is_copy_constructible_v = |
3073 | is_copy_constructible<_Tp>::value; | |
137422c8 | 3074 | template <typename _Tp> |
288695f7 DK |
3075 | inline constexpr bool is_move_constructible_v = |
3076 | is_move_constructible<_Tp>::value; | |
137422c8 | 3077 | template <typename _Tp, typename _Up> |
288695f7 | 3078 | inline constexpr bool is_assignable_v = is_assignable<_Tp, _Up>::value; |
137422c8 | 3079 | template <typename _Tp> |
288695f7 | 3080 | inline constexpr bool is_copy_assignable_v = is_copy_assignable<_Tp>::value; |
137422c8 | 3081 | template <typename _Tp> |
288695f7 | 3082 | inline constexpr bool is_move_assignable_v = is_move_assignable<_Tp>::value; |
137422c8 | 3083 | template <typename _Tp> |
288695f7 | 3084 | inline constexpr bool is_destructible_v = is_destructible<_Tp>::value; |
137422c8 | 3085 | template <typename _Tp, typename... _Args> |
288695f7 | 3086 | inline constexpr bool is_trivially_constructible_v = |
137422c8 VV |
3087 | is_trivially_constructible<_Tp, _Args...>::value; |
3088 | template <typename _Tp> | |
288695f7 | 3089 | inline constexpr bool is_trivially_default_constructible_v = |
137422c8 VV |
3090 | is_trivially_default_constructible<_Tp>::value; |
3091 | template <typename _Tp> | |
288695f7 | 3092 | inline constexpr bool is_trivially_copy_constructible_v = |
137422c8 VV |
3093 | is_trivially_copy_constructible<_Tp>::value; |
3094 | template <typename _Tp> | |
288695f7 | 3095 | inline constexpr bool is_trivially_move_constructible_v = |
137422c8 VV |
3096 | is_trivially_move_constructible<_Tp>::value; |
3097 | template <typename _Tp, typename _Up> | |
288695f7 | 3098 | inline constexpr bool is_trivially_assignable_v = |
137422c8 VV |
3099 | is_trivially_assignable<_Tp, _Up>::value; |
3100 | template <typename _Tp> | |
288695f7 | 3101 | inline constexpr bool is_trivially_copy_assignable_v = |
137422c8 VV |
3102 | is_trivially_copy_assignable<_Tp>::value; |
3103 | template <typename _Tp> | |
288695f7 | 3104 | inline constexpr bool is_trivially_move_assignable_v = |
137422c8 VV |
3105 | is_trivially_move_assignable<_Tp>::value; |
3106 | template <typename _Tp> | |
288695f7 | 3107 | inline constexpr bool is_trivially_destructible_v = |
137422c8 VV |
3108 | is_trivially_destructible<_Tp>::value; |
3109 | template <typename _Tp, typename... _Args> | |
288695f7 | 3110 | inline constexpr bool is_nothrow_constructible_v = |
137422c8 VV |
3111 | is_nothrow_constructible<_Tp, _Args...>::value; |
3112 | template <typename _Tp> | |
288695f7 | 3113 | inline constexpr bool is_nothrow_default_constructible_v = |
137422c8 VV |
3114 | is_nothrow_default_constructible<_Tp>::value; |
3115 | template <typename _Tp> | |
288695f7 | 3116 | inline constexpr bool is_nothrow_copy_constructible_v = |
137422c8 VV |
3117 | is_nothrow_copy_constructible<_Tp>::value; |
3118 | template <typename _Tp> | |
288695f7 | 3119 | inline constexpr bool is_nothrow_move_constructible_v = |
137422c8 VV |
3120 | is_nothrow_move_constructible<_Tp>::value; |
3121 | template <typename _Tp, typename _Up> | |
288695f7 | 3122 | inline constexpr bool is_nothrow_assignable_v = |
137422c8 VV |
3123 | is_nothrow_assignable<_Tp, _Up>::value; |
3124 | template <typename _Tp> | |
288695f7 | 3125 | inline constexpr bool is_nothrow_copy_assignable_v = |
137422c8 VV |
3126 | is_nothrow_copy_assignable<_Tp>::value; |
3127 | template <typename _Tp> | |
288695f7 | 3128 | inline constexpr bool is_nothrow_move_assignable_v = |
137422c8 VV |
3129 | is_nothrow_move_assignable<_Tp>::value; |
3130 | template <typename _Tp> | |
288695f7 | 3131 | inline constexpr bool is_nothrow_destructible_v = |
137422c8 VV |
3132 | is_nothrow_destructible<_Tp>::value; |
3133 | template <typename _Tp> | |
288695f7 | 3134 | inline constexpr bool has_virtual_destructor_v = |
137422c8 VV |
3135 | has_virtual_destructor<_Tp>::value; |
3136 | template <typename _Tp> | |
288695f7 | 3137 | inline constexpr size_t alignment_of_v = alignment_of<_Tp>::value; |
137422c8 | 3138 | template <typename _Tp> |
288695f7 | 3139 | inline constexpr size_t rank_v = rank<_Tp>::value; |
137422c8 | 3140 | template <typename _Tp, unsigned _Idx = 0> |
288695f7 | 3141 | inline constexpr size_t extent_v = extent<_Tp, _Idx>::value; |
137422c8 | 3142 | template <typename _Tp, typename _Up> |
288695f7 | 3143 | inline constexpr bool is_same_v = is_same<_Tp, _Up>::value; |
137422c8 | 3144 | template <typename _Base, typename _Derived> |
288695f7 | 3145 | inline constexpr bool is_base_of_v = is_base_of<_Base, _Derived>::value; |
137422c8 | 3146 | template <typename _From, typename _To> |
288695f7 | 3147 | inline constexpr bool is_convertible_v = is_convertible<_From, _To>::value; |
873c7d5a | 3148 | |
2d763763 | 3149 | #ifdef _GLIBCXX_HAVE_BUILTIN_HAS_UNIQ_OBJ_REP |
873c7d5a JW |
3150 | # define __cpp_lib_has_unique_object_representations 201606 |
3151 | /// has_unique_object_representations | |
3152 | template<typename _Tp> | |
3153 | struct has_unique_object_representations | |
3154 | : bool_constant<__has_unique_object_representations( | |
3155 | remove_cv_t<remove_all_extents_t<_Tp>> | |
3156 | )> | |
608a080c AP |
3157 | { |
3158 | static_assert(std::__is_complete_or_unbounded(__type_identity<_Tp>{}), | |
3159 | "template argument must be a complete class or an unbounded array"); | |
3160 | }; | |
b0e63d94 JW |
3161 | |
3162 | template<typename _Tp> | |
3163 | inline constexpr bool has_unique_object_representations_v | |
3164 | = has_unique_object_representations<_Tp>::value; | |
1f5700e9 | 3165 | #endif |
e2ac6765 | 3166 | |
afa56c17 | 3167 | #ifdef _GLIBCXX_HAVE_BUILTIN_IS_AGGREGATE |
ff273400 | 3168 | # define __cpp_lib_is_aggregate 201703 |
e2ac6765 VV |
3169 | /// is_aggregate |
3170 | template<typename _Tp> | |
3171 | struct is_aggregate | |
608a080c | 3172 | : bool_constant<__is_aggregate(remove_cv_t<_Tp>)> |
209ee624 | 3173 | { }; |
e2ac6765 VV |
3174 | |
3175 | /// is_aggregate_v | |
3176 | template<typename _Tp> | |
3177 | inline constexpr bool is_aggregate_v = is_aggregate<_Tp>::value; | |
3178 | #endif | |
137422c8 | 3179 | #endif // C++17 |
6b9539e2 | 3180 | |
e641ee43 JW |
3181 | #if __cplusplus > 201703L |
3182 | /// Byte order | |
3183 | enum class endian | |
3184 | { | |
3185 | little = __ORDER_LITTLE_ENDIAN__, | |
3186 | big = __ORDER_BIG_ENDIAN__, | |
3187 | native = __BYTE_ORDER__ | |
3188 | }; | |
6791489e JW |
3189 | |
3190 | /// Remove references and cv-qualifiers. | |
3191 | template<typename _Tp> | |
3192 | struct remove_cvref | |
3193 | { | |
3194 | using type = __remove_cvref_t<_Tp>; | |
3195 | }; | |
3196 | ||
3197 | template<typename _Tp> | |
3198 | using remove_cvref_t = __remove_cvref_t<_Tp>; | |
3199 | ||
ee896276 JW |
3200 | /// Identity metafunction. |
3201 | template<typename _Tp> | |
3202 | struct type_identity { using type = _Tp; }; | |
3203 | ||
3204 | template<typename _Tp> | |
3205 | using type_identity_t = typename type_identity<_Tp>::type; | |
3206 | ||
3d18dc9d JW |
3207 | /// Unwrap a reference_wrapper |
3208 | template<typename _Tp> | |
3209 | struct unwrap_reference { using type = _Tp; }; | |
3210 | ||
3211 | template<typename _Tp> | |
3212 | struct unwrap_reference<reference_wrapper<_Tp>> { using type = _Tp&; }; | |
3213 | ||
82e8c3da JW |
3214 | template<typename _Tp> |
3215 | using unwrap_reference_t = typename unwrap_reference<_Tp>::type; | |
3216 | ||
3d18dc9d JW |
3217 | /// Decay type and if it's a reference_wrapper, unwrap it |
3218 | template<typename _Tp> | |
82e8c3da | 3219 | struct unwrap_ref_decay { using type = unwrap_reference_t<decay_t<_Tp>>; }; |
3d18dc9d JW |
3220 | |
3221 | template<typename _Tp> | |
3222 | using unwrap_ref_decay_t = typename unwrap_ref_decay<_Tp>::type; | |
3223 | ||
46610940 JW |
3224 | #define __cpp_lib_bounded_array_traits 201902L |
3225 | ||
28d85efb JW |
3226 | /// True for a type that is an array of known bound. |
3227 | template<typename _Tp> | |
3228 | struct is_bounded_array | |
3229 | : public __is_array_known_bounds<_Tp> | |
3230 | { }; | |
3231 | ||
3232 | /// True for a type that is an array of unknown bound. | |
3233 | template<typename _Tp> | |
3234 | struct is_unbounded_array | |
3235 | : public __is_array_unknown_bounds<_Tp> | |
3236 | { }; | |
3237 | ||
3238 | template<typename _Tp> | |
3239 | inline constexpr bool is_bounded_array_v | |
3240 | = is_bounded_array<_Tp>::value; | |
3241 | ||
3242 | template<typename _Tp> | |
3243 | inline constexpr bool is_unbounded_array_v | |
3244 | = is_unbounded_array<_Tp>::value; | |
3245 | ||
0d7924f2 | 3246 | #ifdef _GLIBCXX_HAVE_BUILTIN_IS_CONSTANT_EVALUATED |
134a6f7b | 3247 | |
8aa1550e | 3248 | #define __cpp_lib_is_constant_evaluated 201811L |
134a6f7b | 3249 | |
0d7924f2 JJ |
3250 | constexpr inline bool |
3251 | is_constant_evaluated() noexcept | |
3252 | { return __builtin_is_constant_evaluated(); } | |
3253 | #endif | |
3254 | ||
e641ee43 JW |
3255 | #endif // C++2a |
3256 | ||
12ffa228 | 3257 | _GLIBCXX_END_NAMESPACE_VERSION |
c0ffa2ba | 3258 | } // namespace std |
7b50cdef | 3259 | |
734f5023 | 3260 | #endif // C++11 |
57317d2a | 3261 | |
7274deff | 3262 | #endif // _GLIBCXX_TYPE_TRAITS |