1 // Debugging deque implementation -*- C++ -*-
3 // Copyright (C) 2003-2018 Free Software Foundation, Inc.
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)
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.
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.
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/>.
26 * This file is a GNU debug extension to the Standard C++ Library.
29 #ifndef _GLIBCXX_DEBUG_DEQUE
30 #define _GLIBCXX_DEBUG_DEQUE 1
32 #pragma GCC system_header
35 #include <debug/safe_sequence.h>
36 #include <debug/safe_container.h>
37 #include <debug/safe_iterator.h>
39 namespace std _GLIBCXX_VISIBILITY(default)
43 /// Class std::deque with safety/checking/debug instrumentation.
44 template<typename _Tp, typename _Allocator = std::allocator<_Tp> >
46 : public __gnu_debug::_Safe_container<
47 deque<_Tp, _Allocator>, _Allocator,
48 __gnu_debug::_Safe_sequence>,
49 public _GLIBCXX_STD_C::deque<_Tp, _Allocator>
51 typedef _GLIBCXX_STD_C::deque<_Tp, _Allocator> _Base;
52 typedef __gnu_debug::_Safe_container<
53 deque, _Allocator, __gnu_debug::_Safe_sequence> _Safe;
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;
60 typedef typename _Base::reference reference;
61 typedef typename _Base::const_reference const_reference;
63 typedef __gnu_debug::_Safe_iterator<_Base_iterator, deque>
65 typedef __gnu_debug::_Safe_iterator<_Base_const_iterator, deque>
68 typedef typename _Base::size_type size_type;
69 typedef typename _Base::difference_type difference_type;
71 typedef _Tp value_type;
72 typedef _Allocator allocator_type;
73 typedef typename _Base::pointer pointer;
74 typedef typename _Base::const_pointer const_pointer;
75 typedef std::reverse_iterator<iterator> reverse_iterator;
76 typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
78 // 23.2.1.1 construct/copy/destroy:
80 #if __cplusplus < 201103L
84 deque(const deque& __x)
90 deque(const deque&) = default;
91 deque(deque&&) = default;
93 deque(const deque& __d, const _Allocator& __a)
96 deque(deque&& __d, const _Allocator& __a)
97 : _Safe(std::move(__d)), _Base(std::move(__d), __a) { }
99 deque(initializer_list<value_type> __l,
100 const allocator_type& __a = allocator_type())
101 : _Base(__l, __a) { }
107 deque(const _Allocator& __a)
110 #if __cplusplus >= 201103L
112 deque(size_type __n, const _Allocator& __a = _Allocator())
113 : _Base(__n, __a) { }
115 deque(size_type __n, const _Tp& __value,
116 const _Allocator& __a = _Allocator())
117 : _Base(__n, __value, __a) { }
120 deque(size_type __n, const _Tp& __value = _Tp(),
121 const _Allocator& __a = _Allocator())
122 : _Base(__n, __value, __a) { }
125 #if __cplusplus >= 201103L
126 template<class _InputIterator,
127 typename = std::_RequireInputIter<_InputIterator>>
129 template<class _InputIterator>
131 deque(_InputIterator __first, _InputIterator __last,
132 const _Allocator& __a = _Allocator())
133 : _Base(__gnu_debug::__base(__gnu_debug::__check_valid_range(__first,
135 __gnu_debug::__base(__last), __a)
138 deque(const _Base& __x)
141 #if __cplusplus < 201103L
143 operator=(const deque& __x)
145 this->_M_safe() = __x;
151 operator=(const deque&) = default;
154 operator=(deque&&) = default;
157 operator=(initializer_list<value_type> __l)
160 this->_M_invalidate_all();
165 #if __cplusplus >= 201103L
166 template<class _InputIterator,
167 typename = std::_RequireInputIter<_InputIterator>>
169 template<class _InputIterator>
172 assign(_InputIterator __first, _InputIterator __last)
174 typename __gnu_debug::_Distance_traits<_InputIterator>::__type __dist;
175 __glibcxx_check_valid_range2(__first, __last, __dist);
176 if (__dist.second >= __gnu_debug::__dp_sign)
177 _Base::assign(__gnu_debug::__unsafe(__first),
178 __gnu_debug::__unsafe(__last));
180 _Base::assign(__first, __last);
182 this->_M_invalidate_all();
186 assign(size_type __n, const _Tp& __t)
188 _Base::assign(__n, __t);
189 this->_M_invalidate_all();
192 #if __cplusplus >= 201103L
194 assign(initializer_list<value_type> __l)
197 this->_M_invalidate_all();
201 using _Base::get_allocator;
205 begin() _GLIBCXX_NOEXCEPT
206 { return iterator(_Base::begin(), this); }
209 begin() const _GLIBCXX_NOEXCEPT
210 { return const_iterator(_Base::begin(), this); }
213 end() _GLIBCXX_NOEXCEPT
214 { return iterator(_Base::end(), this); }
217 end() const _GLIBCXX_NOEXCEPT
218 { return const_iterator(_Base::end(), this); }
221 rbegin() _GLIBCXX_NOEXCEPT
222 { return reverse_iterator(end()); }
224 const_reverse_iterator
225 rbegin() const _GLIBCXX_NOEXCEPT
226 { return const_reverse_iterator(end()); }
229 rend() _GLIBCXX_NOEXCEPT
230 { return reverse_iterator(begin()); }
232 const_reverse_iterator
233 rend() const _GLIBCXX_NOEXCEPT
234 { return const_reverse_iterator(begin()); }
236 #if __cplusplus >= 201103L
238 cbegin() const noexcept
239 { return const_iterator(_Base::begin(), this); }
242 cend() const noexcept
243 { return const_iterator(_Base::end(), this); }
245 const_reverse_iterator
246 crbegin() const noexcept
247 { return const_reverse_iterator(end()); }
249 const_reverse_iterator
250 crend() const noexcept
251 { return const_reverse_iterator(begin()); }
256 _M_invalidate_after_nth(difference_type __n)
258 typedef __gnu_debug::_After_nth_from<_Base_const_iterator> _After_nth;
259 this->_M_invalidate_if(_After_nth(__n, _Base::begin()));
263 // 23.2.1.2 capacity:
265 using _Base::max_size;
267 #if __cplusplus >= 201103L
269 resize(size_type __sz)
271 bool __invalidate_all = __sz > this->size();
272 if (__sz < this->size())
273 this->_M_invalidate_after_nth(__sz);
277 if (__invalidate_all)
278 this->_M_invalidate_all();
282 resize(size_type __sz, const _Tp& __c)
284 bool __invalidate_all = __sz > this->size();
285 if (__sz < this->size())
286 this->_M_invalidate_after_nth(__sz);
288 _Base::resize(__sz, __c);
290 if (__invalidate_all)
291 this->_M_invalidate_all();
295 resize(size_type __sz, _Tp __c = _Tp())
297 bool __invalidate_all = __sz > this->size();
298 if (__sz < this->size())
299 this->_M_invalidate_after_nth(__sz);
301 _Base::resize(__sz, __c);
303 if (__invalidate_all)
304 this->_M_invalidate_all();
308 #if __cplusplus >= 201103L
310 shrink_to_fit() noexcept
312 if (_Base::_M_shrink_to_fit())
313 this->_M_invalidate_all();
321 operator[](size_type __n) _GLIBCXX_NOEXCEPT
323 __glibcxx_check_subscript(__n);
324 return _M_base()[__n];
328 operator[](size_type __n) const _GLIBCXX_NOEXCEPT
330 __glibcxx_check_subscript(__n);
331 return _M_base()[__n];
337 front() _GLIBCXX_NOEXCEPT
339 __glibcxx_check_nonempty();
340 return _Base::front();
344 front() const _GLIBCXX_NOEXCEPT
346 __glibcxx_check_nonempty();
347 return _Base::front();
351 back() _GLIBCXX_NOEXCEPT
353 __glibcxx_check_nonempty();
354 return _Base::back();
358 back() const _GLIBCXX_NOEXCEPT
360 __glibcxx_check_nonempty();
361 return _Base::back();
364 // 23.2.1.3 modifiers:
366 push_front(const _Tp& __x)
368 _Base::push_front(__x);
369 this->_M_invalidate_all();
373 push_back(const _Tp& __x)
375 _Base::push_back(__x);
376 this->_M_invalidate_all();
379 #if __cplusplus >= 201103L
381 push_front(_Tp&& __x)
382 { emplace_front(std::move(__x)); }
386 { emplace_back(std::move(__x)); }
388 template<typename... _Args>
389 #if __cplusplus > 201402L
394 emplace_front(_Args&&... __args)
396 _Base::emplace_front(std::forward<_Args>(__args)...);
397 this->_M_invalidate_all();
398 #if __cplusplus > 201402L
403 template<typename... _Args>
404 #if __cplusplus > 201402L
409 emplace_back(_Args&&... __args)
411 _Base::emplace_back(std::forward<_Args>(__args)...);
412 this->_M_invalidate_all();
413 #if __cplusplus > 201402L
418 template<typename... _Args>
420 emplace(const_iterator __position, _Args&&... __args)
422 __glibcxx_check_insert(__position);
423 _Base_iterator __res = _Base::emplace(__position.base(),
424 std::forward<_Args>(__args)...);
425 this->_M_invalidate_all();
426 return iterator(__res, this);
431 #if __cplusplus >= 201103L
432 insert(const_iterator __position, const _Tp& __x)
434 insert(iterator __position, const _Tp& __x)
437 __glibcxx_check_insert(__position);
438 _Base_iterator __res = _Base::insert(__position.base(), __x);
439 this->_M_invalidate_all();
440 return iterator(__res, this);
443 #if __cplusplus >= 201103L
445 insert(const_iterator __position, _Tp&& __x)
446 { return emplace(__position, std::move(__x)); }
449 insert(const_iterator __position, initializer_list<value_type> __l)
451 __glibcxx_check_insert(__position);
452 _Base_iterator __res = _Base::insert(__position.base(), __l);
453 this->_M_invalidate_all();
454 return iterator(__res, this);
458 #if __cplusplus >= 201103L
460 insert(const_iterator __position, size_type __n, const _Tp& __x)
462 __glibcxx_check_insert(__position);
463 _Base_iterator __res = _Base::insert(__position.base(), __n, __x);
464 this->_M_invalidate_all();
465 return iterator(__res, this);
469 insert(iterator __position, size_type __n, const _Tp& __x)
471 __glibcxx_check_insert(__position);
472 _Base::insert(__position.base(), __n, __x);
473 this->_M_invalidate_all();
477 #if __cplusplus >= 201103L
478 template<class _InputIterator,
479 typename = std::_RequireInputIter<_InputIterator>>
481 insert(const_iterator __position,
482 _InputIterator __first, _InputIterator __last)
484 typename __gnu_debug::_Distance_traits<_InputIterator>::__type __dist;
485 __glibcxx_check_insert_range(__position, __first, __last, __dist);
486 _Base_iterator __res;
487 if (__dist.second >= __gnu_debug::__dp_sign)
488 __res = _Base::insert(__position.base(),
489 __gnu_debug::__unsafe(__first),
490 __gnu_debug::__unsafe(__last));
492 __res = _Base::insert(__position.base(), __first, __last);
494 this->_M_invalidate_all();
495 return iterator(__res, this);
498 template<class _InputIterator>
500 insert(iterator __position,
501 _InputIterator __first, _InputIterator __last)
503 typename __gnu_debug::_Distance_traits<_InputIterator>::__type __dist;
504 __glibcxx_check_insert_range(__position, __first, __last, __dist);
506 if (__dist.second >= __gnu_debug::__dp_sign)
507 _Base::insert(__position.base(),
508 __gnu_debug::__unsafe(__first),
509 __gnu_debug::__unsafe(__last));
511 _Base::insert(__position.base(), __first, __last);
513 this->_M_invalidate_all();
518 pop_front() _GLIBCXX_NOEXCEPT
520 __glibcxx_check_nonempty();
521 this->_M_invalidate_if(_Equal(_Base::begin()));
526 pop_back() _GLIBCXX_NOEXCEPT
528 __glibcxx_check_nonempty();
529 this->_M_invalidate_if(_Equal(--_Base::end()));
534 #if __cplusplus >= 201103L
535 erase(const_iterator __position)
537 erase(iterator __position)
540 __glibcxx_check_erase(__position);
541 #if __cplusplus >= 201103L
542 _Base_const_iterator __victim = __position.base();
544 _Base_iterator __victim = __position.base();
546 if (__victim == _Base::begin() || __victim == _Base::end() - 1)
548 this->_M_invalidate_if(_Equal(__victim));
549 return iterator(_Base::erase(__victim), this);
553 _Base_iterator __res = _Base::erase(__victim);
554 this->_M_invalidate_all();
555 return iterator(__res, this);
560 #if __cplusplus >= 201103L
561 erase(const_iterator __first, const_iterator __last)
563 erase(iterator __first, iterator __last)
566 // _GLIBCXX_RESOLVE_LIB_DEFECTS
567 // 151. can't currently clear() empty container
568 __glibcxx_check_erase_range(__first, __last);
570 if (__first.base() == __last.base())
571 #if __cplusplus >= 201103L
572 return iterator(__first.base()._M_const_cast(), this);
576 else if (__first.base() == _Base::begin()
577 || __last.base() == _Base::end())
579 this->_M_detach_singular();
580 for (_Base_const_iterator __position = __first.base();
581 __position != __last.base(); ++__position)
583 this->_M_invalidate_if(_Equal(__position));
587 return iterator(_Base::erase(__first.base(), __last.base()),
592 this->_M_revalidate_singular();
593 __throw_exception_again;
598 _Base_iterator __res = _Base::erase(__first.base(),
600 this->_M_invalidate_all();
601 return iterator(__res, this);
607 _GLIBCXX_NOEXCEPT_IF( noexcept(declval<_Base&>().swap(__x)) )
614 clear() _GLIBCXX_NOEXCEPT
617 this->_M_invalidate_all();
621 _M_base() _GLIBCXX_NOEXCEPT { return *this; }
624 _M_base() const _GLIBCXX_NOEXCEPT { return *this; }
627 #if __cpp_deduction_guides >= 201606
628 template<typename _InputIterator, typename _ValT
629 = typename iterator_traits<_InputIterator>::value_type,
630 typename _Allocator = allocator<_ValT>,
631 typename = _RequireInputIter<_InputIterator>,
632 typename = _RequireAllocator<_Allocator>>
633 deque(_InputIterator, _InputIterator, _Allocator = _Allocator())
634 -> deque<_ValT, _Allocator>;
637 template<typename _Tp, typename _Alloc>
639 operator==(const deque<_Tp, _Alloc>& __lhs,
640 const deque<_Tp, _Alloc>& __rhs)
641 { return __lhs._M_base() == __rhs._M_base(); }
643 template<typename _Tp, typename _Alloc>
645 operator!=(const deque<_Tp, _Alloc>& __lhs,
646 const deque<_Tp, _Alloc>& __rhs)
647 { return __lhs._M_base() != __rhs._M_base(); }
649 template<typename _Tp, typename _Alloc>
651 operator<(const deque<_Tp, _Alloc>& __lhs,
652 const deque<_Tp, _Alloc>& __rhs)
653 { return __lhs._M_base() < __rhs._M_base(); }
655 template<typename _Tp, typename _Alloc>
657 operator<=(const deque<_Tp, _Alloc>& __lhs,
658 const deque<_Tp, _Alloc>& __rhs)
659 { return __lhs._M_base() <= __rhs._M_base(); }
661 template<typename _Tp, typename _Alloc>
663 operator>=(const deque<_Tp, _Alloc>& __lhs,
664 const deque<_Tp, _Alloc>& __rhs)
665 { return __lhs._M_base() >= __rhs._M_base(); }
667 template<typename _Tp, typename _Alloc>
669 operator>(const deque<_Tp, _Alloc>& __lhs,
670 const deque<_Tp, _Alloc>& __rhs)
671 { return __lhs._M_base() > __rhs._M_base(); }
673 template<typename _Tp, typename _Alloc>
675 swap(deque<_Tp, _Alloc>& __lhs, deque<_Tp, _Alloc>& __rhs)
676 _GLIBCXX_NOEXCEPT_IF(noexcept(__lhs.swap(__rhs)))
677 { __lhs.swap(__rhs); }
679 } // namespace __debug