source: Daodan/MSYS2/mingw32/include/c++/11.2.0/debug/multimap.h@ 1186

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[1166]1// Debugging multimap implementation -*- C++ -*-
2
3// Copyright (C) 2003-2021 Free Software Foundation, Inc.
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
8// Free Software Foundation; either version 3, or (at your option)
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
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/>.
24
25/** @file debug/multimap.h
26 * This file is a GNU debug extension to the Standard C++ Library.
27 */
28
29#ifndef _GLIBCXX_DEBUG_MULTIMAP_H
30#define _GLIBCXX_DEBUG_MULTIMAP_H 1
31
32#include <debug/safe_sequence.h>
33#include <debug/safe_container.h>
34#include <debug/safe_iterator.h>
35#include <utility>
36
37namespace std _GLIBCXX_VISIBILITY(default)
38{
39namespace __debug
40{
41 /// Class std::multimap with safety/checking/debug instrumentation.
42 template<typename _Key, typename _Tp, typename _Compare = std::less<_Key>,
43 typename _Allocator = std::allocator<std::pair<const _Key, _Tp> > >
44 class multimap
45 : public __gnu_debug::_Safe_container<
46 multimap<_Key, _Tp, _Compare, _Allocator>, _Allocator,
47 __gnu_debug::_Safe_node_sequence>,
48 public _GLIBCXX_STD_C::multimap<_Key, _Tp, _Compare, _Allocator>
49 {
50 typedef _GLIBCXX_STD_C::multimap<
51 _Key, _Tp, _Compare, _Allocator> _Base;
52 typedef __gnu_debug::_Safe_container<
53 multimap, _Allocator, __gnu_debug::_Safe_node_sequence> _Safe;
54
55 typedef typename _Base::const_iterator _Base_const_iterator;
56 typedef typename _Base::iterator _Base_iterator;
57 typedef __gnu_debug::_Equal_to<_Base_const_iterator> _Equal;
58
59 template<typename _ItT, typename _SeqT, typename _CatT>
60 friend class ::__gnu_debug::_Safe_iterator;
61
62 // Reference wrapper for base class. Disambiguates multimap(const _Base&)
63 // from copy constructor by requiring a user-defined conversion.
64 // See PR libstdc++/90102.
65 struct _Base_ref
66 {
67 _Base_ref(const _Base& __r) : _M_ref(__r) { }
68
69 const _Base& _M_ref;
70 };
71
72 public:
73 // types:
74 typedef _Key key_type;
75 typedef _Tp mapped_type;
76 typedef std::pair<const _Key, _Tp> value_type;
77 typedef _Compare key_compare;
78 typedef _Allocator allocator_type;
79 typedef typename _Base::reference reference;
80 typedef typename _Base::const_reference const_reference;
81
82 typedef __gnu_debug::_Safe_iterator<_Base_iterator, multimap>
83 iterator;
84 typedef __gnu_debug::_Safe_iterator<_Base_const_iterator,
85 multimap> const_iterator;
86
87 typedef typename _Base::size_type size_type;
88 typedef typename _Base::difference_type difference_type;
89 typedef typename _Base::pointer pointer;
90 typedef typename _Base::const_pointer const_pointer;
91 typedef std::reverse_iterator<iterator> reverse_iterator;
92 typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
93
94 // 23.3.1.1 construct/copy/destroy:
95
96#if __cplusplus < 201103L
97 multimap() : _Base() { }
98
99 multimap(const multimap& __x)
100 : _Base(__x) { }
101
102 ~multimap() { }
103#else
104 multimap() = default;
105 multimap(const multimap&) = default;
106 multimap(multimap&&) = default;
107
108 multimap(initializer_list<value_type> __l,
109 const _Compare& __c = _Compare(),
110 const allocator_type& __a = allocator_type())
111 : _Base(__l, __c, __a) { }
112
113 explicit
114 multimap(const allocator_type& __a)
115 : _Base(__a) { }
116
117 multimap(const multimap& __m, const allocator_type& __a)
118 : _Base(__m, __a) { }
119
120 multimap(multimap&& __m, const allocator_type& __a)
121 noexcept( noexcept(_Base(std::move(__m._M_base()), __a)) )
122 : _Safe(std::move(__m._M_safe()), __a),
123 _Base(std::move(__m._M_base()), __a) { }
124
125 multimap(initializer_list<value_type> __l, const allocator_type& __a)
126 : _Base(__l, __a) { }
127
128 template<typename _InputIterator>
129 multimap(_InputIterator __first, _InputIterator __last,
130 const allocator_type& __a)
131 : _Base(__gnu_debug::__base(
132 __glibcxx_check_valid_constructor_range(__first, __last)),
133 __gnu_debug::__base(__last), __a) { }
134
135 ~multimap() = default;
136#endif
137
138 explicit multimap(const _Compare& __comp,
139 const _Allocator& __a = _Allocator())
140 : _Base(__comp, __a) { }
141
142 template<typename _InputIterator>
143 multimap(_InputIterator __first, _InputIterator __last,
144 const _Compare& __comp = _Compare(),
145 const _Allocator& __a = _Allocator())
146 : _Base(__gnu_debug::__base(
147 __glibcxx_check_valid_constructor_range(__first, __last)),
148 __gnu_debug::__base(__last),
149 __comp, __a) { }
150
151 multimap(_Base_ref __x)
152 : _Base(__x._M_ref) { }
153
154#if __cplusplus < 201103L
155 multimap&
156 operator=(const multimap& __x)
157 {
158 this->_M_safe() = __x;
159 _M_base() = __x;
160 return *this;
161 }
162#else
163 multimap&
164 operator=(const multimap&) = default;
165
166 multimap&
167 operator=(multimap&&) = default;
168
169 multimap&
170 operator=(initializer_list<value_type> __l)
171 {
172 _M_base() = __l;
173 this->_M_invalidate_all();
174 return *this;
175 }
176#endif
177
178 using _Base::get_allocator;
179
180 // iterators:
181 iterator
182 begin() _GLIBCXX_NOEXCEPT
183 { return iterator(_Base::begin(), this); }
184
185 const_iterator
186 begin() const _GLIBCXX_NOEXCEPT
187 { return const_iterator(_Base::begin(), this); }
188
189 iterator
190 end() _GLIBCXX_NOEXCEPT
191 { return iterator(_Base::end(), this); }
192
193 const_iterator
194 end() const _GLIBCXX_NOEXCEPT
195 { return const_iterator(_Base::end(), this); }
196
197 reverse_iterator
198 rbegin() _GLIBCXX_NOEXCEPT
199 { return reverse_iterator(end()); }
200
201 const_reverse_iterator
202 rbegin() const _GLIBCXX_NOEXCEPT
203 { return const_reverse_iterator(end()); }
204
205 reverse_iterator
206 rend() _GLIBCXX_NOEXCEPT
207 { return reverse_iterator(begin()); }
208
209 const_reverse_iterator
210 rend() const _GLIBCXX_NOEXCEPT
211 { return const_reverse_iterator(begin()); }
212
213#if __cplusplus >= 201103L
214 const_iterator
215 cbegin() const noexcept
216 { return const_iterator(_Base::begin(), this); }
217
218 const_iterator
219 cend() const noexcept
220 { return const_iterator(_Base::end(), this); }
221
222 const_reverse_iterator
223 crbegin() const noexcept
224 { return const_reverse_iterator(end()); }
225
226 const_reverse_iterator
227 crend() const noexcept
228 { return const_reverse_iterator(begin()); }
229#endif
230
231 // capacity:
232 using _Base::empty;
233 using _Base::size;
234 using _Base::max_size;
235
236 // modifiers:
237#if __cplusplus >= 201103L
238 template<typename... _Args>
239 iterator
240 emplace(_Args&&... __args)
241 { return { _Base::emplace(std::forward<_Args>(__args)...), this }; }
242
243 template<typename... _Args>
244 iterator
245 emplace_hint(const_iterator __pos, _Args&&... __args)
246 {
247 __glibcxx_check_insert(__pos);
248 return
249 {
250 _Base::emplace_hint(__pos.base(), std::forward<_Args>(__args)...),
251 this
252 };
253 }
254#endif
255
256 iterator
257 insert(const value_type& __x)
258 { return iterator(_Base::insert(__x), this); }
259
260#if __cplusplus >= 201103L
261 // _GLIBCXX_RESOLVE_LIB_DEFECTS
262 // 2354. Unnecessary copying when inserting into maps with braced-init
263 iterator
264 insert(value_type&& __x)
265 { return { _Base::insert(std::move(__x)), this }; }
266
267 template<typename _Pair, typename = typename
268 std::enable_if<std::is_constructible<value_type,
269 _Pair&&>::value>::type>
270 iterator
271 insert(_Pair&& __x)
272 { return { _Base::insert(std::forward<_Pair>(__x)), this }; }
273#endif
274
275#if __cplusplus >= 201103L
276 void
277 insert(std::initializer_list<value_type> __list)
278 { _Base::insert(__list); }
279#endif
280
281 iterator
282#if __cplusplus >= 201103L
283 insert(const_iterator __position, const value_type& __x)
284#else
285 insert(iterator __position, const value_type& __x)
286#endif
287 {
288 __glibcxx_check_insert(__position);
289 return iterator(_Base::insert(__position.base(), __x), this);
290 }
291
292#if __cplusplus >= 201103L
293 // _GLIBCXX_RESOLVE_LIB_DEFECTS
294 // 2354. Unnecessary copying when inserting into maps with braced-init
295 iterator
296 insert(const_iterator __position, value_type&& __x)
297 {
298 __glibcxx_check_insert(__position);
299 return { _Base::insert(__position.base(), std::move(__x)), this };
300 }
301
302 template<typename _Pair, typename = typename
303 std::enable_if<std::is_constructible<value_type,
304 _Pair&&>::value>::type>
305 iterator
306 insert(const_iterator __position, _Pair&& __x)
307 {
308 __glibcxx_check_insert(__position);
309 return
310 {
311 _Base::insert(__position.base(), std::forward<_Pair>(__x)),
312 this
313 };
314 }
315#endif
316
317 template<typename _InputIterator>
318 void
319 insert(_InputIterator __first, _InputIterator __last)
320 {
321 typename __gnu_debug::_Distance_traits<_InputIterator>::__type __dist;
322 __glibcxx_check_valid_range2(__first, __last, __dist);
323
324 if (__dist.second >= __gnu_debug::__dp_sign)
325 _Base::insert(__gnu_debug::__unsafe(__first),
326 __gnu_debug::__unsafe(__last));
327 else
328 _Base::insert(__first, __last);
329 }
330
331#if __cplusplus > 201402L
332 using node_type = typename _Base::node_type;
333
334 node_type
335 extract(const_iterator __position)
336 {
337 __glibcxx_check_erase(__position);
338 this->_M_invalidate_if(_Equal(__position.base()));
339 return _Base::extract(__position.base());
340 }
341
342 node_type
343 extract(const key_type& __key)
344 {
345 const auto __position = find(__key);
346 if (__position != end())
347 return extract(__position);
348 return {};
349 }
350
351 iterator
352 insert(node_type&& __nh)
353 { return { _Base::insert(std::move(__nh)), this }; }
354
355 iterator
356 insert(const_iterator __hint, node_type&& __nh)
357 {
358 __glibcxx_check_insert(__hint);
359 return { _Base::insert(__hint.base(), std::move(__nh)), this };
360 }
361
362 using _Base::merge;
363#endif // C++17
364
365#if __cplusplus >= 201103L
366 iterator
367 erase(const_iterator __position)
368 {
369 __glibcxx_check_erase(__position);
370 this->_M_invalidate_if(_Equal(__position.base()));
371 return { _Base::erase(__position.base()), this };
372 }
373
374 _GLIBCXX_ABI_TAG_CXX11
375 iterator
376 erase(iterator __position)
377 { return erase(const_iterator(__position)); }
378#else
379 void
380 erase(iterator __position)
381 {
382 __glibcxx_check_erase(__position);
383 this->_M_invalidate_if(_Equal(__position.base()));
384 _Base::erase(__position.base());
385 }
386#endif
387
388 size_type
389 erase(const key_type& __x)
390 {
391 std::pair<_Base_iterator, _Base_iterator> __victims =
392 _Base::equal_range(__x);
393 size_type __count = 0;
394 _Base_iterator __victim = __victims.first;
395 while (__victim != __victims.second)
396 {
397 this->_M_invalidate_if(_Equal(__victim));
398 _Base::erase(__victim++);
399 ++__count;
400 }
401 return __count;
402 }
403
404#if __cplusplus >= 201103L
405 iterator
406 erase(const_iterator __first, const_iterator __last)
407 {
408 // _GLIBCXX_RESOLVE_LIB_DEFECTS
409 // 151. can't currently clear() empty container
410 __glibcxx_check_erase_range(__first, __last);
411 for (_Base_const_iterator __victim = __first.base();
412 __victim != __last.base(); ++__victim)
413 {
414 _GLIBCXX_DEBUG_VERIFY(__victim != _Base::cend(),
415 _M_message(__gnu_debug::__msg_valid_range)
416 ._M_iterator(__first, "first")
417 ._M_iterator(__last, "last"));
418 this->_M_invalidate_if(_Equal(__victim));
419 }
420
421 return { _Base::erase(__first.base(), __last.base()), this };
422 }
423#else
424 void
425 erase(iterator __first, iterator __last)
426 {
427 // _GLIBCXX_RESOLVE_LIB_DEFECTS
428 // 151. can't currently clear() empty container
429 __glibcxx_check_erase_range(__first, __last);
430 for (_Base_iterator __victim = __first.base();
431 __victim != __last.base(); ++__victim)
432 {
433 _GLIBCXX_DEBUG_VERIFY(__victim != _Base::end(),
434 _M_message(__gnu_debug::__msg_valid_range)
435 ._M_iterator(__first, "first")
436 ._M_iterator(__last, "last"));
437 this->_M_invalidate_if(_Equal(__victim));
438 }
439 _Base::erase(__first.base(), __last.base());
440 }
441#endif
442
443 void
444 swap(multimap& __x)
445 _GLIBCXX_NOEXCEPT_IF( noexcept(declval<_Base&>().swap(__x)) )
446 {
447 _Safe::_M_swap(__x);
448 _Base::swap(__x);
449 }
450
451 void
452 clear() _GLIBCXX_NOEXCEPT
453 {
454 this->_M_invalidate_all();
455 _Base::clear();
456 }
457
458 // observers:
459 using _Base::key_comp;
460 using _Base::value_comp;
461
462 // 23.3.1.3 multimap operations:
463 iterator
464 find(const key_type& __x)
465 { return iterator(_Base::find(__x), this); }
466
467#if __cplusplus > 201103L
468 template<typename _Kt,
469 typename _Req =
470 typename __has_is_transparent<_Compare, _Kt>::type>
471 iterator
472 find(const _Kt& __x)
473 { return { _Base::find(__x), this }; }
474#endif
475
476 const_iterator
477 find(const key_type& __x) const
478 { return const_iterator(_Base::find(__x), this); }
479
480#if __cplusplus > 201103L
481 template<typename _Kt,
482 typename _Req =
483 typename __has_is_transparent<_Compare, _Kt>::type>
484 const_iterator
485 find(const _Kt& __x) const
486 { return { _Base::find(__x), this }; }
487#endif
488
489 using _Base::count;
490
491 iterator
492 lower_bound(const key_type& __x)
493 { return iterator(_Base::lower_bound(__x), this); }
494
495#if __cplusplus > 201103L
496 template<typename _Kt,
497 typename _Req =
498 typename __has_is_transparent<_Compare, _Kt>::type>
499 iterator
500 lower_bound(const _Kt& __x)
501 { return { _Base::lower_bound(__x), this }; }
502#endif
503
504 const_iterator
505 lower_bound(const key_type& __x) const
506 { return const_iterator(_Base::lower_bound(__x), this); }
507
508#if __cplusplus > 201103L
509 template<typename _Kt,
510 typename _Req =
511 typename __has_is_transparent<_Compare, _Kt>::type>
512 const_iterator
513 lower_bound(const _Kt& __x) const
514 { return { _Base::lower_bound(__x), this }; }
515#endif
516
517 iterator
518 upper_bound(const key_type& __x)
519 { return iterator(_Base::upper_bound(__x), this); }
520
521#if __cplusplus > 201103L
522 template<typename _Kt,
523 typename _Req =
524 typename __has_is_transparent<_Compare, _Kt>::type>
525 iterator
526 upper_bound(const _Kt& __x)
527 { return { _Base::upper_bound(__x), this }; }
528#endif
529
530 const_iterator
531 upper_bound(const key_type& __x) const
532 { return const_iterator(_Base::upper_bound(__x), this); }
533
534#if __cplusplus > 201103L
535 template<typename _Kt,
536 typename _Req =
537 typename __has_is_transparent<_Compare, _Kt>::type>
538 const_iterator
539 upper_bound(const _Kt& __x) const
540 { return { _Base::upper_bound(__x), this }; }
541#endif
542
543 std::pair<iterator,iterator>
544 equal_range(const key_type& __x)
545 {
546 std::pair<_Base_iterator, _Base_iterator> __res =
547 _Base::equal_range(__x);
548 return std::make_pair(iterator(__res.first, this),
549 iterator(__res.second, this));
550 }
551
552#if __cplusplus > 201103L
553 template<typename _Kt,
554 typename _Req =
555 typename __has_is_transparent<_Compare, _Kt>::type>
556 std::pair<iterator, iterator>
557 equal_range(const _Kt& __x)
558 {
559 auto __res = _Base::equal_range(__x);
560 return { { __res.first, this }, { __res.second, this } };
561 }
562#endif
563
564 std::pair<const_iterator,const_iterator>
565 equal_range(const key_type& __x) const
566 {
567 std::pair<_Base_const_iterator, _Base_const_iterator> __res =
568 _Base::equal_range(__x);
569 return std::make_pair(const_iterator(__res.first, this),
570 const_iterator(__res.second, this));
571 }
572
573#if __cplusplus > 201103L
574 template<typename _Kt,
575 typename _Req =
576 typename __has_is_transparent<_Compare, _Kt>::type>
577 std::pair<const_iterator, const_iterator>
578 equal_range(const _Kt& __x) const
579 {
580 auto __res = _Base::equal_range(__x);
581 return { { __res.first, this }, { __res.second, this } };
582 }
583#endif
584
585 _Base&
586 _M_base() _GLIBCXX_NOEXCEPT { return *this; }
587
588 const _Base&
589 _M_base() const _GLIBCXX_NOEXCEPT { return *this; }
590 };
591
592#if __cpp_deduction_guides >= 201606
593
594 template<typename _InputIterator,
595 typename _Compare = less<__iter_key_t<_InputIterator>>,
596 typename _Allocator = allocator<__iter_to_alloc_t<_InputIterator>>,
597 typename = _RequireInputIter<_InputIterator>,
598 typename = _RequireNotAllocator<_Compare>,
599 typename = _RequireAllocator<_Allocator>>
600 multimap(_InputIterator, _InputIterator,
601 _Compare = _Compare(), _Allocator = _Allocator())
602 -> multimap<__iter_key_t<_InputIterator>, __iter_val_t<_InputIterator>,
603 _Compare, _Allocator>;
604
605 template<typename _Key, typename _Tp, typename _Compare = less<_Key>,
606 typename _Allocator = allocator<pair<const _Key, _Tp>>,
607 typename = _RequireNotAllocator<_Compare>,
608 typename = _RequireAllocator<_Allocator>>
609 multimap(initializer_list<pair<_Key, _Tp>>,
610 _Compare = _Compare(), _Allocator = _Allocator())
611 -> multimap<_Key, _Tp, _Compare, _Allocator>;
612
613 template<typename _InputIterator, typename _Allocator,
614 typename = _RequireInputIter<_InputIterator>,
615 typename = _RequireAllocator<_Allocator>>
616 multimap(_InputIterator, _InputIterator, _Allocator)
617 -> multimap<__iter_key_t<_InputIterator>, __iter_val_t<_InputIterator>,
618 less<__iter_key_t<_InputIterator>>, _Allocator>;
619
620 template<typename _Key, typename _Tp, typename _Allocator,
621 typename = _RequireAllocator<_Allocator>>
622 multimap(initializer_list<pair<_Key, _Tp>>, _Allocator)
623 -> multimap<_Key, _Tp, less<_Key>, _Allocator>;
624
625#endif
626
627 template<typename _Key, typename _Tp,
628 typename _Compare, typename _Allocator>
629 inline bool
630 operator==(const multimap<_Key, _Tp, _Compare, _Allocator>& __lhs,
631 const multimap<_Key, _Tp, _Compare, _Allocator>& __rhs)
632 { return __lhs._M_base() == __rhs._M_base(); }
633
634#if __cpp_lib_three_way_comparison
635 template<typename _Key, typename _Tp, typename _Compare, typename _Alloc>
636 inline __detail::__synth3way_t<pair<const _Key, _Tp>>
637 operator<=>(const multimap<_Key, _Tp, _Compare, _Alloc>& __lhs,
638 const multimap<_Key, _Tp, _Compare, _Alloc>& __rhs)
639 { return __lhs._M_base() <=> __rhs._M_base(); }
640#else
641 template<typename _Key, typename _Tp,
642 typename _Compare, typename _Allocator>
643 inline bool
644 operator!=(const multimap<_Key, _Tp, _Compare, _Allocator>& __lhs,
645 const multimap<_Key, _Tp, _Compare, _Allocator>& __rhs)
646 { return __lhs._M_base() != __rhs._M_base(); }
647
648 template<typename _Key, typename _Tp,
649 typename _Compare, typename _Allocator>
650 inline bool
651 operator<(const multimap<_Key, _Tp, _Compare, _Allocator>& __lhs,
652 const multimap<_Key, _Tp, _Compare, _Allocator>& __rhs)
653 { return __lhs._M_base() < __rhs._M_base(); }
654
655 template<typename _Key, typename _Tp,
656 typename _Compare, typename _Allocator>
657 inline bool
658 operator<=(const multimap<_Key, _Tp, _Compare, _Allocator>& __lhs,
659 const multimap<_Key, _Tp, _Compare, _Allocator>& __rhs)
660 { return __lhs._M_base() <= __rhs._M_base(); }
661
662 template<typename _Key, typename _Tp,
663 typename _Compare, typename _Allocator>
664 inline bool
665 operator>=(const multimap<_Key, _Tp, _Compare, _Allocator>& __lhs,
666 const multimap<_Key, _Tp, _Compare, _Allocator>& __rhs)
667 { return __lhs._M_base() >= __rhs._M_base(); }
668
669 template<typename _Key, typename _Tp,
670 typename _Compare, typename _Allocator>
671 inline bool
672 operator>(const multimap<_Key, _Tp, _Compare, _Allocator>& __lhs,
673 const multimap<_Key, _Tp, _Compare, _Allocator>& __rhs)
674 { return __lhs._M_base() > __rhs._M_base(); }
675#endif // three-way comparison
676
677 template<typename _Key, typename _Tp,
678 typename _Compare, typename _Allocator>
679 inline void
680 swap(multimap<_Key, _Tp, _Compare, _Allocator>& __lhs,
681 multimap<_Key, _Tp, _Compare, _Allocator>& __rhs)
682 _GLIBCXX_NOEXCEPT_IF(noexcept(__lhs.swap(__rhs)))
683 { __lhs.swap(__rhs); }
684
685} // namespace __debug
686} // namespace std
687
688#endif
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