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
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
|
// -*- C++ -*-
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP___MEMORY_UNIQUE_PTR_H
#define _LIBCPP___MEMORY_UNIQUE_PTR_H
#include <__config>
#include <__functional/hash.h>
#include <__functional/operations.h>
#include <__memory/allocator_traits.h> // __pointer
#include <__memory/compressed_pair.h>
#include <__utility/forward.h>
#include <__utility/move.h>
#include <cstddef>
#include <stlfwd>
#include <type_traits>
#if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR)
# include <__memory/auto_ptr.h>
#endif
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _Tp>
struct _LIBCPP_TEMPLATE_VIS default_delete {
static_assert(!is_function<_Tp>::value,
"default_delete cannot be instantiated for function types");
#ifndef _LIBCPP_CXX03_LANG
_LIBCPP_INLINE_VISIBILITY constexpr default_delete() _NOEXCEPT = default;
#else
_LIBCPP_INLINE_VISIBILITY default_delete() {}
#endif
template <class _Up>
_LIBCPP_INLINE_VISIBILITY
default_delete(const default_delete<_Up>&,
typename enable_if<is_convertible<_Up*, _Tp*>::value>::type* =
0) _NOEXCEPT {}
_LIBCPP_INLINE_VISIBILITY void operator()(_Tp* __ptr) const _NOEXCEPT {
static_assert(sizeof(_Tp) > 0,
"default_delete can not delete incomplete type");
static_assert(!is_void<_Tp>::value,
"default_delete can not delete incomplete type");
delete __ptr;
}
};
template <class _Tp>
struct _LIBCPP_TEMPLATE_VIS default_delete<_Tp[]> {
private:
template <class _Up>
struct _EnableIfConvertible
: enable_if<is_convertible<_Up(*)[], _Tp(*)[]>::value> {};
public:
#ifndef _LIBCPP_CXX03_LANG
_LIBCPP_INLINE_VISIBILITY constexpr default_delete() _NOEXCEPT = default;
#else
_LIBCPP_INLINE_VISIBILITY default_delete() {}
#endif
template <class _Up>
_LIBCPP_INLINE_VISIBILITY
default_delete(const default_delete<_Up[]>&,
typename _EnableIfConvertible<_Up>::type* = 0) _NOEXCEPT {}
template <class _Up>
_LIBCPP_INLINE_VISIBILITY
typename _EnableIfConvertible<_Up>::type
operator()(_Up* __ptr) const _NOEXCEPT {
static_assert(sizeof(_Tp) > 0,
"default_delete can not delete incomplete type");
static_assert(!is_void<_Tp>::value,
"default_delete can not delete void type");
delete[] __ptr;
}
};
template <class _Deleter>
struct __unique_ptr_deleter_sfinae {
static_assert(!is_reference<_Deleter>::value, "incorrect specialization");
typedef const _Deleter& __lval_ref_type;
typedef _Deleter&& __good_rval_ref_type;
typedef true_type __enable_rval_overload;
};
template <class _Deleter>
struct __unique_ptr_deleter_sfinae<_Deleter const&> {
typedef const _Deleter& __lval_ref_type;
typedef const _Deleter&& __bad_rval_ref_type;
typedef false_type __enable_rval_overload;
};
template <class _Deleter>
struct __unique_ptr_deleter_sfinae<_Deleter&> {
typedef _Deleter& __lval_ref_type;
typedef _Deleter&& __bad_rval_ref_type;
typedef false_type __enable_rval_overload;
};
#if defined(_LIBCPP_ABI_ENABLE_UNIQUE_PTR_TRIVIAL_ABI)
# define _LIBCPP_UNIQUE_PTR_TRIVIAL_ABI __attribute__((trivial_abi))
#else
# define _LIBCPP_UNIQUE_PTR_TRIVIAL_ABI
#endif
template <class _Tp, class _Dp>
class _LIBCPP_UNIQUE_PTR_TRIVIAL_ABI _LIBCPP_TEMPLATE_VIS unique_ptr {
public:
typedef _Tp element_type;
typedef _Dp deleter_type;
typedef _LIBCPP_NODEBUG typename __pointer<_Tp, deleter_type>::type pointer;
static_assert(!is_rvalue_reference<deleter_type>::value,
"the specified deleter type cannot be an rvalue reference");
private:
__compressed_pair<pointer, deleter_type> __ptr_;
struct __nat { int __for_bool_; };
typedef _LIBCPP_NODEBUG __unique_ptr_deleter_sfinae<_Dp> _DeleterSFINAE;
template <bool _Dummy>
using _LValRefType _LIBCPP_NODEBUG =
typename __dependent_type<_DeleterSFINAE, _Dummy>::__lval_ref_type;
template <bool _Dummy>
using _GoodRValRefType _LIBCPP_NODEBUG =
typename __dependent_type<_DeleterSFINAE, _Dummy>::__good_rval_ref_type;
template <bool _Dummy>
using _BadRValRefType _LIBCPP_NODEBUG =
typename __dependent_type<_DeleterSFINAE, _Dummy>::__bad_rval_ref_type;
template <bool _Dummy, class _Deleter = typename __dependent_type<
__identity<deleter_type>, _Dummy>::type>
using _EnableIfDeleterDefaultConstructible _LIBCPP_NODEBUG =
typename enable_if<is_default_constructible<_Deleter>::value &&
!is_pointer<_Deleter>::value>::type;
template <class _ArgType>
using _EnableIfDeleterConstructible _LIBCPP_NODEBUG =
typename enable_if<is_constructible<deleter_type, _ArgType>::value>::type;
template <class _UPtr, class _Up>
using _EnableIfMoveConvertible _LIBCPP_NODEBUG = typename enable_if<
is_convertible<typename _UPtr::pointer, pointer>::value &&
!is_array<_Up>::value
>::type;
template <class _UDel>
using _EnableIfDeleterConvertible _LIBCPP_NODEBUG = typename enable_if<
(is_reference<_Dp>::value && is_same<_Dp, _UDel>::value) ||
(!is_reference<_Dp>::value && is_convertible<_UDel, _Dp>::value)
>::type;
template <class _UDel>
using _EnableIfDeleterAssignable = typename enable_if<
is_assignable<_Dp&, _UDel&&>::value
>::type;
public:
template <bool _Dummy = true,
class = _EnableIfDeleterDefaultConstructible<_Dummy> >
_LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR unique_ptr() _NOEXCEPT : __ptr_(__value_init_tag(), __value_init_tag()) {}
template <bool _Dummy = true,
class = _EnableIfDeleterDefaultConstructible<_Dummy> >
_LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR unique_ptr(nullptr_t) _NOEXCEPT : __ptr_(__value_init_tag(), __value_init_tag()) {}
template <bool _Dummy = true,
class = _EnableIfDeleterDefaultConstructible<_Dummy> >
_LIBCPP_INLINE_VISIBILITY
explicit unique_ptr(pointer __p) _NOEXCEPT : __ptr_(__p, __value_init_tag()) {}
template <bool _Dummy = true,
class = _EnableIfDeleterConstructible<_LValRefType<_Dummy> > >
_LIBCPP_INLINE_VISIBILITY
unique_ptr(pointer __p, _LValRefType<_Dummy> __d) _NOEXCEPT
: __ptr_(__p, __d) {}
template <bool _Dummy = true,
class = _EnableIfDeleterConstructible<_GoodRValRefType<_Dummy> > >
_LIBCPP_INLINE_VISIBILITY
unique_ptr(pointer __p, _GoodRValRefType<_Dummy> __d) _NOEXCEPT
: __ptr_(__p, _VSTD::move(__d)) {
static_assert(!is_reference<deleter_type>::value,
"rvalue deleter bound to reference");
}
template <bool _Dummy = true,
class = _EnableIfDeleterConstructible<_BadRValRefType<_Dummy> > >
_LIBCPP_INLINE_VISIBILITY
unique_ptr(pointer __p, _BadRValRefType<_Dummy> __d) = delete;
_LIBCPP_INLINE_VISIBILITY
unique_ptr(unique_ptr&& __u) _NOEXCEPT
: __ptr_(__u.release(), _VSTD::forward<deleter_type>(__u.get_deleter())) {
}
template <class _Up, class _Ep,
class = _EnableIfMoveConvertible<unique_ptr<_Up, _Ep>, _Up>,
class = _EnableIfDeleterConvertible<_Ep>
>
_LIBCPP_INLINE_VISIBILITY
unique_ptr(unique_ptr<_Up, _Ep>&& __u) _NOEXCEPT
: __ptr_(__u.release(), _VSTD::forward<_Ep>(__u.get_deleter())) {}
#if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR)
template <class _Up>
_LIBCPP_INLINE_VISIBILITY
unique_ptr(auto_ptr<_Up>&& __p,
typename enable_if<is_convertible<_Up*, _Tp*>::value &&
is_same<_Dp, default_delete<_Tp> >::value,
__nat>::type = __nat()) _NOEXCEPT
: __ptr_(__p.release(), __value_init_tag()) {}
#endif
_LIBCPP_INLINE_VISIBILITY
unique_ptr& operator=(unique_ptr&& __u) _NOEXCEPT {
reset(__u.release());
__ptr_.second() = _VSTD::forward<deleter_type>(__u.get_deleter());
return *this;
}
template <class _Up, class _Ep,
class = _EnableIfMoveConvertible<unique_ptr<_Up, _Ep>, _Up>,
class = _EnableIfDeleterAssignable<_Ep>
>
_LIBCPP_INLINE_VISIBILITY
unique_ptr& operator=(unique_ptr<_Up, _Ep>&& __u) _NOEXCEPT {
reset(__u.release());
__ptr_.second() = _VSTD::forward<_Ep>(__u.get_deleter());
return *this;
}
#if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR)
template <class _Up>
_LIBCPP_INLINE_VISIBILITY
typename enable_if<is_convertible<_Up*, _Tp*>::value &&
is_same<_Dp, default_delete<_Tp> >::value,
unique_ptr&>::type
operator=(auto_ptr<_Up> __p) {
reset(__p.release());
return *this;
}
#endif
#ifdef _LIBCPP_CXX03_LANG
unique_ptr(unique_ptr const&) = delete;
unique_ptr& operator=(unique_ptr const&) = delete;
#endif
_LIBCPP_INLINE_VISIBILITY
~unique_ptr() { reset(); }
_LIBCPP_INLINE_VISIBILITY
unique_ptr& operator=(nullptr_t) _NOEXCEPT {
reset();
return *this;
}
_LIBCPP_INLINE_VISIBILITY
typename add_lvalue_reference<_Tp>::type
operator*() const {
return *__ptr_.first();
}
_LIBCPP_INLINE_VISIBILITY
pointer operator->() const _NOEXCEPT {
return __ptr_.first();
}
_LIBCPP_INLINE_VISIBILITY
pointer get() const _NOEXCEPT {
return __ptr_.first();
}
_LIBCPP_INLINE_VISIBILITY
deleter_type& get_deleter() _NOEXCEPT {
return __ptr_.second();
}
_LIBCPP_INLINE_VISIBILITY
const deleter_type& get_deleter() const _NOEXCEPT {
return __ptr_.second();
}
_LIBCPP_INLINE_VISIBILITY
explicit operator bool() const _NOEXCEPT {
return __ptr_.first() != nullptr;
}
_LIBCPP_INLINE_VISIBILITY
pointer release() _NOEXCEPT {
pointer __t = __ptr_.first();
__ptr_.first() = pointer();
return __t;
}
_LIBCPP_INLINE_VISIBILITY
void reset(pointer __p = pointer()) _NOEXCEPT {
pointer __tmp = __ptr_.first();
__ptr_.first() = __p;
if (__tmp)
__ptr_.second()(__tmp);
}
_LIBCPP_INLINE_VISIBILITY
void swap(unique_ptr& __u) _NOEXCEPT {
__ptr_.swap(__u.__ptr_);
}
};
template <class _Tp, class _Dp>
class _LIBCPP_UNIQUE_PTR_TRIVIAL_ABI _LIBCPP_TEMPLATE_VIS unique_ptr<_Tp[], _Dp> {
public:
typedef _Tp element_type;
typedef _Dp deleter_type;
typedef typename __pointer<_Tp, deleter_type>::type pointer;
private:
__compressed_pair<pointer, deleter_type> __ptr_;
template <class _From>
struct _CheckArrayPointerConversion : is_same<_From, pointer> {};
template <class _FromElem>
struct _CheckArrayPointerConversion<_FromElem*>
: integral_constant<bool,
is_same<_FromElem*, pointer>::value ||
(is_same<pointer, element_type*>::value &&
is_convertible<_FromElem(*)[], element_type(*)[]>::value)
>
{};
typedef __unique_ptr_deleter_sfinae<_Dp> _DeleterSFINAE;
template <bool _Dummy>
using _LValRefType _LIBCPP_NODEBUG =
typename __dependent_type<_DeleterSFINAE, _Dummy>::__lval_ref_type;
template <bool _Dummy>
using _GoodRValRefType _LIBCPP_NODEBUG =
typename __dependent_type<_DeleterSFINAE, _Dummy>::__good_rval_ref_type;
template <bool _Dummy>
using _BadRValRefType _LIBCPP_NODEBUG =
typename __dependent_type<_DeleterSFINAE, _Dummy>::__bad_rval_ref_type;
template <bool _Dummy, class _Deleter = typename __dependent_type<
__identity<deleter_type>, _Dummy>::type>
using _EnableIfDeleterDefaultConstructible _LIBCPP_NODEBUG =
typename enable_if<is_default_constructible<_Deleter>::value &&
!is_pointer<_Deleter>::value>::type;
template <class _ArgType>
using _EnableIfDeleterConstructible _LIBCPP_NODEBUG =
typename enable_if<is_constructible<deleter_type, _ArgType>::value>::type;
template <class _Pp>
using _EnableIfPointerConvertible _LIBCPP_NODEBUG = typename enable_if<
_CheckArrayPointerConversion<_Pp>::value
>::type;
template <class _UPtr, class _Up,
class _ElemT = typename _UPtr::element_type>
using _EnableIfMoveConvertible _LIBCPP_NODEBUG = typename enable_if<
is_array<_Up>::value &&
is_same<pointer, element_type*>::value &&
is_same<typename _UPtr::pointer, _ElemT*>::value &&
is_convertible<_ElemT(*)[], element_type(*)[]>::value
>::type;
template <class _UDel>
using _EnableIfDeleterConvertible _LIBCPP_NODEBUG = typename enable_if<
(is_reference<_Dp>::value && is_same<_Dp, _UDel>::value) ||
(!is_reference<_Dp>::value && is_convertible<_UDel, _Dp>::value)
>::type;
template <class _UDel>
using _EnableIfDeleterAssignable _LIBCPP_NODEBUG = typename enable_if<
is_assignable<_Dp&, _UDel&&>::value
>::type;
public:
template <bool _Dummy = true,
class = _EnableIfDeleterDefaultConstructible<_Dummy> >
_LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR unique_ptr() _NOEXCEPT : __ptr_(__value_init_tag(), __value_init_tag()) {}
template <bool _Dummy = true,
class = _EnableIfDeleterDefaultConstructible<_Dummy> >
_LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR unique_ptr(nullptr_t) _NOEXCEPT : __ptr_(__value_init_tag(), __value_init_tag()) {}
template <class _Pp, bool _Dummy = true,
class = _EnableIfDeleterDefaultConstructible<_Dummy>,
class = _EnableIfPointerConvertible<_Pp> >
_LIBCPP_INLINE_VISIBILITY
explicit unique_ptr(_Pp __p) _NOEXCEPT
: __ptr_(__p, __value_init_tag()) {}
template <class _Pp, bool _Dummy = true,
class = _EnableIfDeleterConstructible<_LValRefType<_Dummy> >,
class = _EnableIfPointerConvertible<_Pp> >
_LIBCPP_INLINE_VISIBILITY
unique_ptr(_Pp __p, _LValRefType<_Dummy> __d) _NOEXCEPT
: __ptr_(__p, __d) {}
template <bool _Dummy = true,
class = _EnableIfDeleterConstructible<_LValRefType<_Dummy> > >
_LIBCPP_INLINE_VISIBILITY
unique_ptr(nullptr_t, _LValRefType<_Dummy> __d) _NOEXCEPT
: __ptr_(nullptr, __d) {}
template <class _Pp, bool _Dummy = true,
class = _EnableIfDeleterConstructible<_GoodRValRefType<_Dummy> >,
class = _EnableIfPointerConvertible<_Pp> >
_LIBCPP_INLINE_VISIBILITY
unique_ptr(_Pp __p, _GoodRValRefType<_Dummy> __d) _NOEXCEPT
: __ptr_(__p, _VSTD::move(__d)) {
static_assert(!is_reference<deleter_type>::value,
"rvalue deleter bound to reference");
}
template <bool _Dummy = true,
class = _EnableIfDeleterConstructible<_GoodRValRefType<_Dummy> > >
_LIBCPP_INLINE_VISIBILITY
unique_ptr(nullptr_t, _GoodRValRefType<_Dummy> __d) _NOEXCEPT
: __ptr_(nullptr, _VSTD::move(__d)) {
static_assert(!is_reference<deleter_type>::value,
"rvalue deleter bound to reference");
}
template <class _Pp, bool _Dummy = true,
class = _EnableIfDeleterConstructible<_BadRValRefType<_Dummy> >,
class = _EnableIfPointerConvertible<_Pp> >
_LIBCPP_INLINE_VISIBILITY
unique_ptr(_Pp __p, _BadRValRefType<_Dummy> __d) = delete;
_LIBCPP_INLINE_VISIBILITY
unique_ptr(unique_ptr&& __u) _NOEXCEPT
: __ptr_(__u.release(), _VSTD::forward<deleter_type>(__u.get_deleter())) {
}
_LIBCPP_INLINE_VISIBILITY
unique_ptr& operator=(unique_ptr&& __u) _NOEXCEPT {
reset(__u.release());
__ptr_.second() = _VSTD::forward<deleter_type>(__u.get_deleter());
return *this;
}
template <class _Up, class _Ep,
class = _EnableIfMoveConvertible<unique_ptr<_Up, _Ep>, _Up>,
class = _EnableIfDeleterConvertible<_Ep>
>
_LIBCPP_INLINE_VISIBILITY
unique_ptr(unique_ptr<_Up, _Ep>&& __u) _NOEXCEPT
: __ptr_(__u.release(), _VSTD::forward<_Ep>(__u.get_deleter())) {
}
template <class _Up, class _Ep,
class = _EnableIfMoveConvertible<unique_ptr<_Up, _Ep>, _Up>,
class = _EnableIfDeleterAssignable<_Ep>
>
_LIBCPP_INLINE_VISIBILITY
unique_ptr&
operator=(unique_ptr<_Up, _Ep>&& __u) _NOEXCEPT {
reset(__u.release());
__ptr_.second() = _VSTD::forward<_Ep>(__u.get_deleter());
return *this;
}
#ifdef _LIBCPP_CXX03_LANG
unique_ptr(unique_ptr const&) = delete;
unique_ptr& operator=(unique_ptr const&) = delete;
#endif
public:
_LIBCPP_INLINE_VISIBILITY
~unique_ptr() { reset(); }
_LIBCPP_INLINE_VISIBILITY
unique_ptr& operator=(nullptr_t) _NOEXCEPT {
reset();
return *this;
}
_LIBCPP_INLINE_VISIBILITY
typename add_lvalue_reference<_Tp>::type
operator[](size_t __i) const {
return __ptr_.first()[__i];
}
_LIBCPP_INLINE_VISIBILITY
pointer get() const _NOEXCEPT {
return __ptr_.first();
}
_LIBCPP_INLINE_VISIBILITY
deleter_type& get_deleter() _NOEXCEPT {
return __ptr_.second();
}
_LIBCPP_INLINE_VISIBILITY
const deleter_type& get_deleter() const _NOEXCEPT {
return __ptr_.second();
}
_LIBCPP_INLINE_VISIBILITY
explicit operator bool() const _NOEXCEPT {
return __ptr_.first() != nullptr;
}
_LIBCPP_INLINE_VISIBILITY
pointer release() _NOEXCEPT {
pointer __t = __ptr_.first();
__ptr_.first() = pointer();
return __t;
}
template <class _Pp>
_LIBCPP_INLINE_VISIBILITY
typename enable_if<
_CheckArrayPointerConversion<_Pp>::value
>::type
reset(_Pp __p) _NOEXCEPT {
pointer __tmp = __ptr_.first();
__ptr_.first() = __p;
if (__tmp)
__ptr_.second()(__tmp);
}
_LIBCPP_INLINE_VISIBILITY
void reset(nullptr_t = nullptr) _NOEXCEPT {
pointer __tmp = __ptr_.first();
__ptr_.first() = nullptr;
if (__tmp)
__ptr_.second()(__tmp);
}
_LIBCPP_INLINE_VISIBILITY
void swap(unique_ptr& __u) _NOEXCEPT {
__ptr_.swap(__u.__ptr_);
}
};
template <class _Tp, class _Dp>
inline _LIBCPP_INLINE_VISIBILITY
typename enable_if<
__is_swappable<_Dp>::value,
void
>::type
swap(unique_ptr<_Tp, _Dp>& __x, unique_ptr<_Tp, _Dp>& __y) _NOEXCEPT {__x.swap(__y);}
template <class _T1, class _D1, class _T2, class _D2>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator==(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return __x.get() == __y.get();}
template <class _T1, class _D1, class _T2, class _D2>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator!=(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return !(__x == __y);}
template <class _T1, class _D1, class _T2, class _D2>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator< (const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y)
{
typedef typename unique_ptr<_T1, _D1>::pointer _P1;
typedef typename unique_ptr<_T2, _D2>::pointer _P2;
typedef typename common_type<_P1, _P2>::type _Vp;
return less<_Vp>()(__x.get(), __y.get());
}
template <class _T1, class _D1, class _T2, class _D2>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator> (const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return __y < __x;}
template <class _T1, class _D1, class _T2, class _D2>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator<=(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return !(__y < __x);}
template <class _T1, class _D1, class _T2, class _D2>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator>=(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return !(__x < __y);}
template <class _T1, class _D1>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator==(const unique_ptr<_T1, _D1>& __x, nullptr_t) _NOEXCEPT
{
return !__x;
}
template <class _T1, class _D1>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator==(nullptr_t, const unique_ptr<_T1, _D1>& __x) _NOEXCEPT
{
return !__x;
}
template <class _T1, class _D1>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator!=(const unique_ptr<_T1, _D1>& __x, nullptr_t) _NOEXCEPT
{
return static_cast<bool>(__x);
}
template <class _T1, class _D1>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator!=(nullptr_t, const unique_ptr<_T1, _D1>& __x) _NOEXCEPT
{
return static_cast<bool>(__x);
}
template <class _T1, class _D1>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator<(const unique_ptr<_T1, _D1>& __x, nullptr_t)
{
typedef typename unique_ptr<_T1, _D1>::pointer _P1;
return less<_P1>()(__x.get(), nullptr);
}
template <class _T1, class _D1>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator<(nullptr_t, const unique_ptr<_T1, _D1>& __x)
{
typedef typename unique_ptr<_T1, _D1>::pointer _P1;
return less<_P1>()(nullptr, __x.get());
}
template <class _T1, class _D1>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator>(const unique_ptr<_T1, _D1>& __x, nullptr_t)
{
return nullptr < __x;
}
template <class _T1, class _D1>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator>(nullptr_t, const unique_ptr<_T1, _D1>& __x)
{
return __x < nullptr;
}
template <class _T1, class _D1>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator<=(const unique_ptr<_T1, _D1>& __x, nullptr_t)
{
return !(nullptr < __x);
}
template <class _T1, class _D1>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator<=(nullptr_t, const unique_ptr<_T1, _D1>& __x)
{
return !(__x < nullptr);
}
template <class _T1, class _D1>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator>=(const unique_ptr<_T1, _D1>& __x, nullptr_t)
{
return !(__x < nullptr);
}
template <class _T1, class _D1>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator>=(nullptr_t, const unique_ptr<_T1, _D1>& __x)
{
return !(nullptr < __x);
}
#if _LIBCPP_STD_VER > 11
template<class _Tp>
struct __unique_if
{
typedef unique_ptr<_Tp> __unique_single;
};
template<class _Tp>
struct __unique_if<_Tp[]>
{
typedef unique_ptr<_Tp[]> __unique_array_unknown_bound;
};
template<class _Tp, size_t _Np>
struct __unique_if<_Tp[_Np]>
{
typedef void __unique_array_known_bound;
};
template<class _Tp, class... _Args>
inline _LIBCPP_INLINE_VISIBILITY
typename __unique_if<_Tp>::__unique_single
make_unique(_Args&&... __args)
{
return unique_ptr<_Tp>(new _Tp(_VSTD::forward<_Args>(__args)...));
}
template<class _Tp>
inline _LIBCPP_INLINE_VISIBILITY
typename __unique_if<_Tp>::__unique_array_unknown_bound
make_unique(size_t __n)
{
typedef typename remove_extent<_Tp>::type _Up;
return unique_ptr<_Tp>(new _Up[__n]());
}
template<class _Tp, class... _Args>
typename __unique_if<_Tp>::__unique_array_known_bound
make_unique(_Args&&...) = delete;
#endif // _LIBCPP_STD_VER > 11
template <class _Tp> struct _LIBCPP_TEMPLATE_VIS hash;
template <class _Tp, class _Dp>
#ifdef _LIBCPP_CXX03_LANG
struct _LIBCPP_TEMPLATE_VIS hash<unique_ptr<_Tp, _Dp> >
#else
struct _LIBCPP_TEMPLATE_VIS hash<__enable_hash_helper<
unique_ptr<_Tp, _Dp>, typename unique_ptr<_Tp, _Dp>::pointer> >
#endif
{
#if _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_ENABLE_CXX20_REMOVED_BINDER_TYPEDEFS)
_LIBCPP_DEPRECATED_IN_CXX17 typedef unique_ptr<_Tp, _Dp> argument_type;
_LIBCPP_DEPRECATED_IN_CXX17 typedef size_t result_type;
#endif
_LIBCPP_INLINE_VISIBILITY
size_t operator()(const unique_ptr<_Tp, _Dp>& __ptr) const
{
typedef typename unique_ptr<_Tp, _Dp>::pointer pointer;
return hash<pointer>()(__ptr.get());
}
};
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP___MEMORY_UNIQUE_PTR_H
|
