1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
|
// -*- C++ -*-
//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP_FUNCTIONAL_BASE
#define _LIBCPP_FUNCTIONAL_BASE
#include <__config>
#include <type_traits>
#include <typeinfo>
#include <exception>
#pragma GCC system_header
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _Arg, class _Result>
struct _LIBCPP_VISIBLE unary_function
{
typedef _Arg argument_type;
typedef _Result result_type;
};
template <class _Arg1, class _Arg2, class _Result>
struct _LIBCPP_VISIBLE binary_function
{
typedef _Arg1 first_argument_type;
typedef _Arg2 second_argument_type;
typedef _Result result_type;
};
template <class _Tp> struct _LIBCPP_VISIBLE hash;
template <class _Tp>
struct __has_result_type
{
private:
struct __two {char _; char __;};
template <class _Up> static __two __test(...);
template <class _Up> static char __test(typename _Up::result_type* = 0);
public:
static const bool value = sizeof(__test<_Tp>(0)) == 1;
};
#ifdef _LIBCPP_HAS_NO_VARIADICS
#include <__functional_base_03>
#else // _LIBCPP_HAS_NO_VARIADICS
// __weak_result_type
template <class _Tp>
struct __derives_from_unary_function
{
private:
struct __two {char _; char __;};
static __two __test(...);
template <class _A, class _R>
static unary_function<_A, _R>
__test(const volatile unary_function<_A, _R>*);
public:
static const bool value = !is_same<decltype(__test((_Tp*)0)), __two>::value;
typedef decltype(__test((_Tp*)0)) type;
};
template <class _Tp>
struct __derives_from_binary_function
{
private:
struct __two {char _; char __;};
static __two __test(...);
template <class _A1, class _A2, class _R>
static binary_function<_A1, _A2, _R>
__test(const volatile binary_function<_A1, _A2, _R>*);
public:
static const bool value = !is_same<decltype(__test((_Tp*)0)), __two>::value;
typedef decltype(__test((_Tp*)0)) type;
};
template <class _Tp, bool = __derives_from_unary_function<_Tp>::value>
struct __maybe_derive_from_unary_function // bool is true
: public __derives_from_unary_function<_Tp>::type
{
};
template <class _Tp>
struct __maybe_derive_from_unary_function<_Tp, false>
{
};
template <class _Tp, bool = __derives_from_binary_function<_Tp>::value>
struct __maybe_derive_from_binary_function // bool is true
: public __derives_from_binary_function<_Tp>::type
{
};
template <class _Tp>
struct __maybe_derive_from_binary_function<_Tp, false>
{
};
template <class _Tp, bool = __has_result_type<_Tp>::value>
struct __weak_result_type_imp // bool is true
: public __maybe_derive_from_unary_function<_Tp>,
public __maybe_derive_from_binary_function<_Tp>
{
typedef typename _Tp::result_type result_type;
};
template <class _Tp>
struct __weak_result_type_imp<_Tp, false>
: public __maybe_derive_from_unary_function<_Tp>,
public __maybe_derive_from_binary_function<_Tp>
{
};
template <class _Tp>
struct __weak_result_type
: public __weak_result_type_imp<_Tp>
{
};
// 0 argument case
template <class _R>
struct __weak_result_type<_R ()>
{
typedef _R result_type;
};
template <class _R>
struct __weak_result_type<_R (&)()>
{
typedef _R result_type;
};
template <class _R>
struct __weak_result_type<_R (*)()>
{
typedef _R result_type;
};
// 1 argument case
template <class _R, class _A1>
struct __weak_result_type<_R (_A1)>
: public unary_function<_A1, _R>
{
};
template <class _R, class _A1>
struct __weak_result_type<_R (&)(_A1)>
: public unary_function<_A1, _R>
{
};
template <class _R, class _A1>
struct __weak_result_type<_R (*)(_A1)>
: public unary_function<_A1, _R>
{
};
template <class _R, class _C>
struct __weak_result_type<_R (_C::*)()>
: public unary_function<_C*, _R>
{
};
template <class _R, class _C>
struct __weak_result_type<_R (_C::*)() const>
: public unary_function<const _C*, _R>
{
};
template <class _R, class _C>
struct __weak_result_type<_R (_C::*)() volatile>
: public unary_function<volatile _C*, _R>
{
};
template <class _R, class _C>
struct __weak_result_type<_R (_C::*)() const volatile>
: public unary_function<const volatile _C*, _R>
{
};
// 2 argument case
template <class _R, class _A1, class _A2>
struct __weak_result_type<_R (_A1, _A2)>
: public binary_function<_A1, _A2, _R>
{
};
template <class _R, class _A1, class _A2>
struct __weak_result_type<_R (*)(_A1, _A2)>
: public binary_function<_A1, _A2, _R>
{
};
template <class _R, class _A1, class _A2>
struct __weak_result_type<_R (&)(_A1, _A2)>
: public binary_function<_A1, _A2, _R>
{
};
template <class _R, class _C, class _A1>
struct __weak_result_type<_R (_C::*)(_A1)>
: public binary_function<_C*, _A1, _R>
{
};
template <class _R, class _C, class _A1>
struct __weak_result_type<_R (_C::*)(_A1) const>
: public binary_function<const _C*, _A1, _R>
{
};
template <class _R, class _C, class _A1>
struct __weak_result_type<_R (_C::*)(_A1) volatile>
: public binary_function<volatile _C*, _A1, _R>
{
};
template <class _R, class _C, class _A1>
struct __weak_result_type<_R (_C::*)(_A1) const volatile>
: public binary_function<const volatile _C*, _A1, _R>
{
};
// 3 or more arguments
template <class _R, class _A1, class _A2, class _A3, class ..._A4>
struct __weak_result_type<_R (_A1, _A2, _A3, _A4...)>
{
typedef _R result_type;
};
template <class _R, class _A1, class _A2, class _A3, class ..._A4>
struct __weak_result_type<_R (&)(_A1, _A2, _A3, _A4...)>
{
typedef _R result_type;
};
template <class _R, class _A1, class _A2, class _A3, class ..._A4>
struct __weak_result_type<_R (*)(_A1, _A2, _A3, _A4...)>
{
typedef _R result_type;
};
template <class _R, class _C, class _A1, class _A2, class ..._A3>
struct __weak_result_type<_R (_C::*)(_A1, _A2, _A3...)>
{
typedef _R result_type;
};
template <class _R, class _C, class _A1, class _A2, class ..._A3>
struct __weak_result_type<_R (_C::*)(_A1, _A2, _A3...) const>
{
typedef _R result_type;
};
template <class _R, class _C, class _A1, class _A2, class ..._A3>
struct __weak_result_type<_R (_C::*)(_A1, _A2, _A3...) volatile>
{
typedef _R result_type;
};
template <class _R, class _C, class _A1, class _A2, class ..._A3>
struct __weak_result_type<_R (_C::*)(_A1, _A2, _A3...) const volatile>
{
typedef _R result_type;
};
// __invoke
// first bullet
template <class _R, class _T, class _T1, class ..._Param, class ..._Arg>
inline _LIBCPP_INLINE_VISIBILITY
typename enable_if
<
sizeof...(_Param) == sizeof...(_Arg) &&
is_base_of<_T, typename remove_reference<_T1>::type>::value,
_R
>::type
__invoke(_R (_T::*__f)(_Param...), _T1&& __t1, _Arg&& ...__arg)
{
return (_STD::forward<_T>(__t1).*__f)(_STD::forward<_Arg>(__arg)...);
}
template <class _R, class _T, class _T1, class ..._Param, class ..._Arg>
inline _LIBCPP_INLINE_VISIBILITY
typename enable_if
<
sizeof...(_Param) == sizeof...(_Arg) &&
is_base_of<_T, typename remove_reference<_T1>::type>::value,
_R
>::type
__invoke(_R (_T::*__f)(_Param...) const, _T1&& __t1, _Arg&& ...__arg)
{
return (_STD::forward<const _T>(__t1).*__f)(_STD::forward<_Arg>(__arg)...);
}
template <class _R, class _T, class _T1, class ..._Param, class ..._Arg>
inline _LIBCPP_INLINE_VISIBILITY
typename enable_if
<
sizeof...(_Param) == sizeof...(_Arg) &&
is_base_of<_T, typename remove_reference<_T1>::type>::value,
_R
>::type
__invoke(_R (_T::*__f)(_Param...) volatile, _T1&& __t1, _Arg&& ...__arg)
{
return (_STD::forward<volatile _T>(__t1).*__f)(_STD::forward<_Arg>(__arg)...);
}
template <class _R, class _T, class _T1, class ..._Param, class ..._Arg>
inline _LIBCPP_INLINE_VISIBILITY
typename enable_if
<
sizeof...(_Param) == sizeof...(_Arg) &&
is_base_of<_T, typename remove_reference<_T1>::type>::value,
_R
>::type
__invoke(_R (_T::*__f)(_Param...) const volatile, _T1&& __t1, _Arg&& ...__arg)
{
return (_STD::forward<const volatile _T>(__t1).*__f)(_STD::forward<_Arg>(__arg)...);
}
// second bullet
template <class _R, class _T, class _T1, class ..._Param, class ..._Arg>
inline _LIBCPP_INLINE_VISIBILITY
typename enable_if
<
sizeof...(_Param) == sizeof...(_Arg) &&
!is_base_of<_T, typename remove_reference<_T1>::type>::value,
_R
>::type
__invoke(_R (_T::*__f)(_Param...), _T1&& __t1, _Arg&& ...__arg)
{
return ((*_STD::forward<_T1>(__t1)).*__f)(_STD::forward<_Arg>(__arg)...);
}
template <class _R, class _T, class _T1, class ..._Param, class ..._Arg>
inline _LIBCPP_INLINE_VISIBILITY
typename enable_if
<
sizeof...(_Param) == sizeof...(_Arg) &&
!is_base_of<_T, typename remove_reference<_T1>::type>::value,
_R
>::type
__invoke(_R (_T::*__f)(_Param...) const, _T1&& __t1, _Arg&& ...__arg)
{
return ((*_STD::forward<_T1>(__t1)).*__f)(_STD::forward<_Arg>(__arg)...);
}
template <class _R, class _T, class _T1, class ..._Param, class ..._Arg>
inline _LIBCPP_INLINE_VISIBILITY
typename enable_if
<
sizeof...(_Param) == sizeof...(_Arg) &&
!is_base_of<_T, typename remove_reference<_T1>::type>::value,
_R
>::type
__invoke(_R (_T::*__f)(_Param...) volatile, _T1&& __t1, _Arg&& ...__arg)
{
return ((*_STD::forward<_T1>(__t1)).*__f)(_STD::forward<_Arg>(__arg)...);
}
template <class _R, class _T, class _T1, class ..._Param, class ..._Arg>
inline _LIBCPP_INLINE_VISIBILITY
typename enable_if
<
sizeof...(_Param) == sizeof...(_Arg) &&
!is_base_of<_T, typename remove_reference<_T1>::type>::value,
_R
>::type
__invoke(_R (_T::*__f)(_Param...) const volatile, _T1&& __t1, _Arg&& ...__arg)
{
return ((*_STD::forward<_T1>(__t1)).*__f)(_STD::forward<_Arg>(__arg)...);
}
// third bullet
template <class _R, class _T, class _T1>
inline _LIBCPP_INLINE_VISIBILITY
typename enable_if
<
is_base_of<_T, typename remove_reference<_T1>::type>::value,
typename __apply_cv<_T1, _R>::type&&
>::type
__invoke(_R _T::* __f, _T1&& __t1)
{
return _STD::forward<_T1>(__t1).*__f;
}
// forth bullet
template <class _T1, class _R, bool>
struct __4th_helper
{
};
template <class _T1, class _R>
struct __4th_helper<_T1, _R, true>
{
typedef typename __apply_cv<decltype(*_STD::declval<_T1>()), _R>::type type;
};
template <class _R, class _T, class _T1>
inline _LIBCPP_INLINE_VISIBILITY
typename __4th_helper<_T1, _R,
!is_base_of<_T,
typename remove_reference<_T1>::type
>::value
>::type&&
__invoke(_R _T::* __f, _T1&& __t1)
{
return (*_STD::forward<_T1>(__t1)).*__f;
}
// fifth bullet
template <class _F, class ..._T>
inline _LIBCPP_INLINE_VISIBILITY
typename result_of<_F(_T...)>::type
__invoke(_F&& __f, _T&& ...__t)
{
return _STD::forward<_F>(__f)(_STD::forward<_T>(__t)...);
}
template <class _Tp, class ..._Args>
struct __invoke_return
{
typedef decltype(__invoke(_STD::declval<_Tp>(), _STD::declval<_Args>()...)) type;
};
template <class _Tp>
class _LIBCPP_VISIBLE reference_wrapper
: public __weak_result_type<_Tp>
{
public:
// types
typedef _Tp type;
private:
type* __f_;
public:
// construct/copy/destroy
_LIBCPP_INLINE_VISIBILITY reference_wrapper(type& __f) : __f_(&__f) {}
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
private: reference_wrapper(type&&); public: // = delete; // do not bind to temps
#endif
// access
_LIBCPP_INLINE_VISIBILITY operator type& () const {return *__f_;}
_LIBCPP_INLINE_VISIBILITY type& get() const {return *__f_;}
// invoke
template <class... _ArgTypes>
_LIBCPP_INLINE_VISIBILITY
typename __invoke_return<type&, _ArgTypes...>::type
operator() (_ArgTypes&&... __args) const
{
return __invoke(get(), _STD::forward<_ArgTypes>(__args)...);
}
};
template <class _Tp> struct ____is_reference_wrapper : public false_type {};
template <class _Tp> struct ____is_reference_wrapper<reference_wrapper<_Tp> > : public true_type {};
template <class _Tp> struct __is_reference_wrapper
: public ____is_reference_wrapper<typename remove_cv<_Tp>::type> {};
template <class _Tp>
inline _LIBCPP_INLINE_VISIBILITY
reference_wrapper<_Tp>
ref(_Tp& __t)
{
return reference_wrapper<_Tp>(__t);
}
template <class _Tp>
inline _LIBCPP_INLINE_VISIBILITY
reference_wrapper<_Tp>
ref(reference_wrapper<_Tp> __t)
{
return ref(__t.get());
}
template <class _Tp>
inline _LIBCPP_INLINE_VISIBILITY
reference_wrapper<const _Tp>
cref(const _Tp& __t)
{
return reference_wrapper<const _Tp>(__t);
}
template <class _Tp>
inline _LIBCPP_INLINE_VISIBILITY
reference_wrapper<const _Tp>
cref(reference_wrapper<_Tp> __t)
{
return cref(__t.get());
}
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
#ifndef _LIBCPP_HAS_NO_DELETED_FUNCTIONS
template <class _Tp> void ref(const _Tp&& __t) = delete;
template <class _Tp> void cref(const _Tp&& __t) = delete;
#else // _LIBCPP_HAS_NO_DELETED_FUNCTIONS
template <class _Tp> void ref(const _Tp&& __t);// = delete;
template <class _Tp> void cref(const _Tp&& __t);// = delete;
#endif // _LIBCPP_HAS_NO_DELETED_FUNCTIONS
#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
#endif // _LIBCPP_HAS_NO_VARIADICS
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP_FUNCTIONAL_BASE
|
