libstdc++
vector.tcc
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1 // Vector implementation (out of line) -*- C++ -*-
2 
3 // Copyright (C) 2001-2017 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 /*
26  *
27  * Copyright (c) 1994
28  * Hewlett-Packard Company
29  *
30  * Permission to use, copy, modify, distribute and sell this software
31  * and its documentation for any purpose is hereby granted without fee,
32  * provided that the above copyright notice appear in all copies and
33  * that both that copyright notice and this permission notice appear
34  * in supporting documentation. Hewlett-Packard Company makes no
35  * representations about the suitability of this software for any
36  * purpose. It is provided "as is" without express or implied warranty.
37  *
38  *
39  * Copyright (c) 1996
40  * Silicon Graphics Computer Systems, Inc.
41  *
42  * Permission to use, copy, modify, distribute and sell this software
43  * and its documentation for any purpose is hereby granted without fee,
44  * provided that the above copyright notice appear in all copies and
45  * that both that copyright notice and this permission notice appear
46  * in supporting documentation. Silicon Graphics makes no
47  * representations about the suitability of this software for any
48  * purpose. It is provided "as is" without express or implied warranty.
49  */
50 
51 /** @file bits/vector.tcc
52  * This is an internal header file, included by other library headers.
53  * Do not attempt to use it directly. @headername{vector}
54  */
55 
56 #ifndef _VECTOR_TCC
57 #define _VECTOR_TCC 1
58 
59 namespace std _GLIBCXX_VISIBILITY(default)
60 {
61 _GLIBCXX_BEGIN_NAMESPACE_CONTAINER
62 
63  template<typename _Tp, typename _Alloc>
64  void
65  vector<_Tp, _Alloc>::
66  reserve(size_type __n)
67  {
68  if (__n > this->max_size())
69  __throw_length_error(__N("vector::reserve"));
70  if (this->capacity() < __n)
71  {
72  const size_type __old_size = size();
73  pointer __tmp = _M_allocate_and_copy(__n,
74  _GLIBCXX_MAKE_MOVE_IF_NOEXCEPT_ITERATOR(this->_M_impl._M_start),
75  _GLIBCXX_MAKE_MOVE_IF_NOEXCEPT_ITERATOR(this->_M_impl._M_finish));
76  std::_Destroy(this->_M_impl._M_start, this->_M_impl._M_finish,
77  _M_get_Tp_allocator());
78  _M_deallocate(this->_M_impl._M_start,
79  this->_M_impl._M_end_of_storage
80  - this->_M_impl._M_start);
81  this->_M_impl._M_start = __tmp;
82  this->_M_impl._M_finish = __tmp + __old_size;
83  this->_M_impl._M_end_of_storage = this->_M_impl._M_start + __n;
84  }
85  }
86 
87 #if __cplusplus >= 201103L
88  template<typename _Tp, typename _Alloc>
89  template<typename... _Args>
90 #if __cplusplus > 201402L
91  typename vector<_Tp, _Alloc>::reference
92 #else
93  void
94 #endif
95  vector<_Tp, _Alloc>::
96  emplace_back(_Args&&... __args)
97  {
98  if (this->_M_impl._M_finish != this->_M_impl._M_end_of_storage)
99  {
100  _Alloc_traits::construct(this->_M_impl, this->_M_impl._M_finish,
101  std::forward<_Args>(__args)...);
102  ++this->_M_impl._M_finish;
103  }
104  else
105  _M_realloc_insert(end(), std::forward<_Args>(__args)...);
106 #if __cplusplus > 201402L
107  return back();
108 #endif
109  }
110 #endif
111 
112  template<typename _Tp, typename _Alloc>
113  typename vector<_Tp, _Alloc>::iterator
114  vector<_Tp, _Alloc>::
115 #if __cplusplus >= 201103L
116  insert(const_iterator __position, const value_type& __x)
117 #else
118  insert(iterator __position, const value_type& __x)
119 #endif
120  {
121  const size_type __n = __position - begin();
122  if (this->_M_impl._M_finish != this->_M_impl._M_end_of_storage)
123  if (__position == end())
124  {
125  _Alloc_traits::construct(this->_M_impl, this->_M_impl._M_finish,
126  __x);
127  ++this->_M_impl._M_finish;
128  }
129  else
130  {
131 #if __cplusplus >= 201103L
132  const auto __pos = begin() + (__position - cbegin());
133  // __x could be an existing element of this vector, so make a
134  // copy of it before _M_insert_aux moves elements around.
135  _Temporary_value __x_copy(this, __x);
136  _M_insert_aux(__pos, std::move(__x_copy._M_val()));
137 #else
138  _M_insert_aux(__position, __x);
139 #endif
140  }
141  else
142 #if __cplusplus >= 201103L
143  _M_realloc_insert(begin() + (__position - cbegin()), __x);
144 #else
145  _M_realloc_insert(__position, __x);
146 #endif
147 
148  return iterator(this->_M_impl._M_start + __n);
149  }
150 
151  template<typename _Tp, typename _Alloc>
152  typename vector<_Tp, _Alloc>::iterator
153  vector<_Tp, _Alloc>::
154  _M_erase(iterator __position)
155  {
156  if (__position + 1 != end())
157  _GLIBCXX_MOVE3(__position + 1, end(), __position);
158  --this->_M_impl._M_finish;
159  _Alloc_traits::destroy(this->_M_impl, this->_M_impl._M_finish);
160  return __position;
161  }
162 
163  template<typename _Tp, typename _Alloc>
164  typename vector<_Tp, _Alloc>::iterator
165  vector<_Tp, _Alloc>::
166  _M_erase(iterator __first, iterator __last)
167  {
168  if (__first != __last)
169  {
170  if (__last != end())
171  _GLIBCXX_MOVE3(__last, end(), __first);
172  _M_erase_at_end(__first.base() + (end() - __last));
173  }
174  return __first;
175  }
176 
177  template<typename _Tp, typename _Alloc>
178  vector<_Tp, _Alloc>&
179  vector<_Tp, _Alloc>::
180  operator=(const vector<_Tp, _Alloc>& __x)
181  {
182  if (&__x != this)
183  {
184 #if __cplusplus >= 201103L
185  if (_Alloc_traits::_S_propagate_on_copy_assign())
186  {
187  if (!_Alloc_traits::_S_always_equal()
188  && _M_get_Tp_allocator() != __x._M_get_Tp_allocator())
189  {
190  // replacement allocator cannot free existing storage
191  this->clear();
192  _M_deallocate(this->_M_impl._M_start,
193  this->_M_impl._M_end_of_storage
194  - this->_M_impl._M_start);
195  this->_M_impl._M_start = nullptr;
196  this->_M_impl._M_finish = nullptr;
197  this->_M_impl._M_end_of_storage = nullptr;
198  }
199  std::__alloc_on_copy(_M_get_Tp_allocator(),
200  __x._M_get_Tp_allocator());
201  }
202 #endif
203  const size_type __xlen = __x.size();
204  if (__xlen > capacity())
205  {
206  pointer __tmp = _M_allocate_and_copy(__xlen, __x.begin(),
207  __x.end());
208  std::_Destroy(this->_M_impl._M_start, this->_M_impl._M_finish,
209  _M_get_Tp_allocator());
210  _M_deallocate(this->_M_impl._M_start,
211  this->_M_impl._M_end_of_storage
212  - this->_M_impl._M_start);
213  this->_M_impl._M_start = __tmp;
214  this->_M_impl._M_end_of_storage = this->_M_impl._M_start + __xlen;
215  }
216  else if (size() >= __xlen)
217  {
218  std::_Destroy(std::copy(__x.begin(), __x.end(), begin()),
219  end(), _M_get_Tp_allocator());
220  }
221  else
222  {
223  std::copy(__x._M_impl._M_start, __x._M_impl._M_start + size(),
224  this->_M_impl._M_start);
225  std::__uninitialized_copy_a(__x._M_impl._M_start + size(),
226  __x._M_impl._M_finish,
227  this->_M_impl._M_finish,
228  _M_get_Tp_allocator());
229  }
230  this->_M_impl._M_finish = this->_M_impl._M_start + __xlen;
231  }
232  return *this;
233  }
234 
235  template<typename _Tp, typename _Alloc>
236  void
237  vector<_Tp, _Alloc>::
238  _M_fill_assign(size_t __n, const value_type& __val)
239  {
240  if (__n > capacity())
241  {
242  vector __tmp(__n, __val, _M_get_Tp_allocator());
243  __tmp._M_impl._M_swap_data(this->_M_impl);
244  }
245  else if (__n > size())
246  {
247  std::fill(begin(), end(), __val);
248  this->_M_impl._M_finish =
249  std::__uninitialized_fill_n_a(this->_M_impl._M_finish,
250  __n - size(), __val,
251  _M_get_Tp_allocator());
252  }
253  else
254  _M_erase_at_end(std::fill_n(this->_M_impl._M_start, __n, __val));
255  }
256 
257  template<typename _Tp, typename _Alloc>
258  template<typename _InputIterator>
259  void
260  vector<_Tp, _Alloc>::
261  _M_assign_aux(_InputIterator __first, _InputIterator __last,
262  std::input_iterator_tag)
263  {
264  pointer __cur(this->_M_impl._M_start);
265  for (; __first != __last && __cur != this->_M_impl._M_finish;
266  ++__cur, ++__first)
267  *__cur = *__first;
268  if (__first == __last)
269  _M_erase_at_end(__cur);
270  else
271  _M_range_insert(end(), __first, __last,
272  std::__iterator_category(__first));
273  }
274 
275  template<typename _Tp, typename _Alloc>
276  template<typename _ForwardIterator>
277  void
278  vector<_Tp, _Alloc>::
279  _M_assign_aux(_ForwardIterator __first, _ForwardIterator __last,
280  std::forward_iterator_tag)
281  {
282  const size_type __len = std::distance(__first, __last);
283 
284  if (__len > capacity())
285  {
286  pointer __tmp(_M_allocate_and_copy(__len, __first, __last));
287  std::_Destroy(this->_M_impl._M_start, this->_M_impl._M_finish,
288  _M_get_Tp_allocator());
289  _M_deallocate(this->_M_impl._M_start,
290  this->_M_impl._M_end_of_storage
291  - this->_M_impl._M_start);
292  this->_M_impl._M_start = __tmp;
293  this->_M_impl._M_finish = this->_M_impl._M_start + __len;
294  this->_M_impl._M_end_of_storage = this->_M_impl._M_finish;
295  }
296  else if (size() >= __len)
297  _M_erase_at_end(std::copy(__first, __last, this->_M_impl._M_start));
298  else
299  {
300  _ForwardIterator __mid = __first;
301  std::advance(__mid, size());
302  std::copy(__first, __mid, this->_M_impl._M_start);
303  this->_M_impl._M_finish =
304  std::__uninitialized_copy_a(__mid, __last,
305  this->_M_impl._M_finish,
306  _M_get_Tp_allocator());
307  }
308  }
309 
310 #if __cplusplus >= 201103L
311  template<typename _Tp, typename _Alloc>
312  auto
313  vector<_Tp, _Alloc>::
314  _M_insert_rval(const_iterator __position, value_type&& __v) -> iterator
315  {
316  const auto __n = __position - cbegin();
317  if (this->_M_impl._M_finish != this->_M_impl._M_end_of_storage)
318  if (__position == cend())
319  {
320  _Alloc_traits::construct(this->_M_impl, this->_M_impl._M_finish,
321  std::move(__v));
322  ++this->_M_impl._M_finish;
323  }
324  else
325  _M_insert_aux(begin() + __n, std::move(__v));
326  else
327  _M_realloc_insert(begin() + __n, std::move(__v));
328 
329  return iterator(this->_M_impl._M_start + __n);
330  }
331 
332  template<typename _Tp, typename _Alloc>
333  template<typename... _Args>
334  auto
335  vector<_Tp, _Alloc>::
336  _M_emplace_aux(const_iterator __position, _Args&&... __args)
337  -> iterator
338  {
339  const auto __n = __position - cbegin();
340  if (this->_M_impl._M_finish != this->_M_impl._M_end_of_storage)
341  if (__position == cend())
342  {
343  _Alloc_traits::construct(this->_M_impl, this->_M_impl._M_finish,
344  std::forward<_Args>(__args)...);
345  ++this->_M_impl._M_finish;
346  }
347  else
348  {
349  // We need to construct a temporary because something in __args...
350  // could alias one of the elements of the container and so we
351  // need to use it before _M_insert_aux moves elements around.
352  _Temporary_value __tmp(this, std::forward<_Args>(__args)...);
353  _M_insert_aux(begin() + __n, std::move(__tmp._M_val()));
354  }
355  else
356  _M_realloc_insert(begin() + __n, std::forward<_Args>(__args)...);
357 
358  return iterator(this->_M_impl._M_start + __n);
359  }
360 
361  template<typename _Tp, typename _Alloc>
362  template<typename _Arg>
363  void
364  vector<_Tp, _Alloc>::
365  _M_insert_aux(iterator __position, _Arg&& __arg)
366 #else
367  template<typename _Tp, typename _Alloc>
368  void
369  vector<_Tp, _Alloc>::
370  _M_insert_aux(iterator __position, const _Tp& __x)
371 #endif
372  {
373  _Alloc_traits::construct(this->_M_impl, this->_M_impl._M_finish,
374  _GLIBCXX_MOVE(*(this->_M_impl._M_finish
375  - 1)));
376  ++this->_M_impl._M_finish;
377 #if __cplusplus < 201103L
378  _Tp __x_copy = __x;
379 #endif
380  _GLIBCXX_MOVE_BACKWARD3(__position.base(),
381  this->_M_impl._M_finish - 2,
382  this->_M_impl._M_finish - 1);
383 #if __cplusplus < 201103L
384  *__position = __x_copy;
385 #else
386  *__position = std::forward<_Arg>(__arg);
387 #endif
388  }
389 
390 #if __cplusplus >= 201103L
391  template<typename _Tp, typename _Alloc>
392  template<typename... _Args>
393  void
394  vector<_Tp, _Alloc>::
395  _M_realloc_insert(iterator __position, _Args&&... __args)
396 #else
397  template<typename _Tp, typename _Alloc>
398  void
399  vector<_Tp, _Alloc>::
400  _M_realloc_insert(iterator __position, const _Tp& __x)
401 #endif
402  {
403  const size_type __len =
404  _M_check_len(size_type(1), "vector::_M_realloc_insert");
405  const size_type __elems_before = __position - begin();
406  pointer __new_start(this->_M_allocate(__len));
407  pointer __new_finish(__new_start);
408  __try
409  {
410  // The order of the three operations is dictated by the C++11
411  // case, where the moves could alter a new element belonging
412  // to the existing vector. This is an issue only for callers
413  // taking the element by lvalue ref (see last bullet of C++11
414  // [res.on.arguments]).
415  _Alloc_traits::construct(this->_M_impl,
416  __new_start + __elems_before,
417 #if __cplusplus >= 201103L
418  std::forward<_Args>(__args)...);
419 #else
420  __x);
421 #endif
422  __new_finish = pointer();
423 
424  __new_finish
425  = std::__uninitialized_move_if_noexcept_a
426  (this->_M_impl._M_start, __position.base(),
427  __new_start, _M_get_Tp_allocator());
428 
429  ++__new_finish;
430 
431  __new_finish
432  = std::__uninitialized_move_if_noexcept_a
433  (__position.base(), this->_M_impl._M_finish,
434  __new_finish, _M_get_Tp_allocator());
435  }
436  __catch(...)
437  {
438  if (!__new_finish)
439  _Alloc_traits::destroy(this->_M_impl,
440  __new_start + __elems_before);
441  else
442  std::_Destroy(__new_start, __new_finish, _M_get_Tp_allocator());
443  _M_deallocate(__new_start, __len);
444  __throw_exception_again;
445  }
446  std::_Destroy(this->_M_impl._M_start, this->_M_impl._M_finish,
447  _M_get_Tp_allocator());
448  _M_deallocate(this->_M_impl._M_start,
449  this->_M_impl._M_end_of_storage
450  - this->_M_impl._M_start);
451  this->_M_impl._M_start = __new_start;
452  this->_M_impl._M_finish = __new_finish;
453  this->_M_impl._M_end_of_storage = __new_start + __len;
454  }
455 
456  template<typename _Tp, typename _Alloc>
457  void
458  vector<_Tp, _Alloc>::
459  _M_fill_insert(iterator __position, size_type __n, const value_type& __x)
460  {
461  if (__n != 0)
462  {
463  if (size_type(this->_M_impl._M_end_of_storage
464  - this->_M_impl._M_finish) >= __n)
465  {
466 #if __cplusplus < 201103L
467  value_type __x_copy = __x;
468 #else
469  _Temporary_value __tmp(this, __x);
470  value_type& __x_copy = __tmp._M_val();
471 #endif
472  const size_type __elems_after = end() - __position;
473  pointer __old_finish(this->_M_impl._M_finish);
474  if (__elems_after > __n)
475  {
476  std::__uninitialized_move_a(this->_M_impl._M_finish - __n,
477  this->_M_impl._M_finish,
478  this->_M_impl._M_finish,
479  _M_get_Tp_allocator());
480  this->_M_impl._M_finish += __n;
481  _GLIBCXX_MOVE_BACKWARD3(__position.base(),
482  __old_finish - __n, __old_finish);
483  std::fill(__position.base(), __position.base() + __n,
484  __x_copy);
485  }
486  else
487  {
488  this->_M_impl._M_finish =
489  std::__uninitialized_fill_n_a(this->_M_impl._M_finish,
490  __n - __elems_after,
491  __x_copy,
492  _M_get_Tp_allocator());
493  std::__uninitialized_move_a(__position.base(), __old_finish,
494  this->_M_impl._M_finish,
495  _M_get_Tp_allocator());
496  this->_M_impl._M_finish += __elems_after;
497  std::fill(__position.base(), __old_finish, __x_copy);
498  }
499  }
500  else
501  {
502  const size_type __len =
503  _M_check_len(__n, "vector::_M_fill_insert");
504  const size_type __elems_before = __position - begin();
505  pointer __new_start(this->_M_allocate(__len));
506  pointer __new_finish(__new_start);
507  __try
508  {
509  // See _M_realloc_insert above.
510  std::__uninitialized_fill_n_a(__new_start + __elems_before,
511  __n, __x,
512  _M_get_Tp_allocator());
513  __new_finish = pointer();
514 
515  __new_finish
516  = std::__uninitialized_move_if_noexcept_a
517  (this->_M_impl._M_start, __position.base(),
518  __new_start, _M_get_Tp_allocator());
519 
520  __new_finish += __n;
521 
522  __new_finish
523  = std::__uninitialized_move_if_noexcept_a
524  (__position.base(), this->_M_impl._M_finish,
525  __new_finish, _M_get_Tp_allocator());
526  }
527  __catch(...)
528  {
529  if (!__new_finish)
530  std::_Destroy(__new_start + __elems_before,
531  __new_start + __elems_before + __n,
532  _M_get_Tp_allocator());
533  else
534  std::_Destroy(__new_start, __new_finish,
535  _M_get_Tp_allocator());
536  _M_deallocate(__new_start, __len);
537  __throw_exception_again;
538  }
539  std::_Destroy(this->_M_impl._M_start, this->_M_impl._M_finish,
540  _M_get_Tp_allocator());
541  _M_deallocate(this->_M_impl._M_start,
542  this->_M_impl._M_end_of_storage
543  - this->_M_impl._M_start);
544  this->_M_impl._M_start = __new_start;
545  this->_M_impl._M_finish = __new_finish;
546  this->_M_impl._M_end_of_storage = __new_start + __len;
547  }
548  }
549  }
550 
551 #if __cplusplus >= 201103L
552  template<typename _Tp, typename _Alloc>
553  void
554  vector<_Tp, _Alloc>::
555  _M_default_append(size_type __n)
556  {
557  if (__n != 0)
558  {
559  if (size_type(this->_M_impl._M_end_of_storage
560  - this->_M_impl._M_finish) >= __n)
561  {
562  this->_M_impl._M_finish =
563  std::__uninitialized_default_n_a(this->_M_impl._M_finish,
564  __n, _M_get_Tp_allocator());
565  }
566  else
567  {
568  const size_type __len =
569  _M_check_len(__n, "vector::_M_default_append");
570  const size_type __old_size = this->size();
571  pointer __new_start(this->_M_allocate(__len));
572  pointer __new_finish(__new_start);
573  __try
574  {
575  __new_finish
576  = std::__uninitialized_move_if_noexcept_a
577  (this->_M_impl._M_start, this->_M_impl._M_finish,
578  __new_start, _M_get_Tp_allocator());
579  __new_finish =
580  std::__uninitialized_default_n_a(__new_finish, __n,
581  _M_get_Tp_allocator());
582  }
583  __catch(...)
584  {
585  std::_Destroy(__new_start, __new_finish,
586  _M_get_Tp_allocator());
587  _M_deallocate(__new_start, __len);
588  __throw_exception_again;
589  }
590  std::_Destroy(this->_M_impl._M_start, this->_M_impl._M_finish,
591  _M_get_Tp_allocator());
592  _M_deallocate(this->_M_impl._M_start,
593  this->_M_impl._M_end_of_storage
594  - this->_M_impl._M_start);
595  this->_M_impl._M_start = __new_start;
596  this->_M_impl._M_finish = __new_finish;
597  this->_M_impl._M_end_of_storage = __new_start + __len;
598  }
599  }
600  }
601 
602  template<typename _Tp, typename _Alloc>
603  bool
604  vector<_Tp, _Alloc>::
605  _M_shrink_to_fit()
606  {
607  if (capacity() == size())
608  return false;
609  return std::__shrink_to_fit_aux<vector>::_S_do_it(*this);
610  }
611 #endif
612 
613  template<typename _Tp, typename _Alloc>
614  template<typename _InputIterator>
615  void
616  vector<_Tp, _Alloc>::
617  _M_range_insert(iterator __pos, _InputIterator __first,
618  _InputIterator __last, std::input_iterator_tag)
619  {
620  for (; __first != __last; ++__first)
621  {
622  __pos = insert(__pos, *__first);
623  ++__pos;
624  }
625  }
626 
627  template<typename _Tp, typename _Alloc>
628  template<typename _ForwardIterator>
629  void
630  vector<_Tp, _Alloc>::
631  _M_range_insert(iterator __position, _ForwardIterator __first,
632  _ForwardIterator __last, std::forward_iterator_tag)
633  {
634  if (__first != __last)
635  {
636  const size_type __n = std::distance(__first, __last);
637  if (size_type(this->_M_impl._M_end_of_storage
638  - this->_M_impl._M_finish) >= __n)
639  {
640  const size_type __elems_after = end() - __position;
641  pointer __old_finish(this->_M_impl._M_finish);
642  if (__elems_after > __n)
643  {
644  std::__uninitialized_move_a(this->_M_impl._M_finish - __n,
645  this->_M_impl._M_finish,
646  this->_M_impl._M_finish,
647  _M_get_Tp_allocator());
648  this->_M_impl._M_finish += __n;
649  _GLIBCXX_MOVE_BACKWARD3(__position.base(),
650  __old_finish - __n, __old_finish);
651  std::copy(__first, __last, __position);
652  }
653  else
654  {
655  _ForwardIterator __mid = __first;
656  std::advance(__mid, __elems_after);
657  std::__uninitialized_copy_a(__mid, __last,
658  this->_M_impl._M_finish,
659  _M_get_Tp_allocator());
660  this->_M_impl._M_finish += __n - __elems_after;
661  std::__uninitialized_move_a(__position.base(),
662  __old_finish,
663  this->_M_impl._M_finish,
664  _M_get_Tp_allocator());
665  this->_M_impl._M_finish += __elems_after;
666  std::copy(__first, __mid, __position);
667  }
668  }
669  else
670  {
671  const size_type __len =
672  _M_check_len(__n, "vector::_M_range_insert");
673  pointer __new_start(this->_M_allocate(__len));
674  pointer __new_finish(__new_start);
675  __try
676  {
677  __new_finish
678  = std::__uninitialized_move_if_noexcept_a
679  (this->_M_impl._M_start, __position.base(),
680  __new_start, _M_get_Tp_allocator());
681  __new_finish
682  = std::__uninitialized_copy_a(__first, __last,
683  __new_finish,
684  _M_get_Tp_allocator());
685  __new_finish
686  = std::__uninitialized_move_if_noexcept_a
687  (__position.base(), this->_M_impl._M_finish,
688  __new_finish, _M_get_Tp_allocator());
689  }
690  __catch(...)
691  {
692  std::_Destroy(__new_start, __new_finish,
693  _M_get_Tp_allocator());
694  _M_deallocate(__new_start, __len);
695  __throw_exception_again;
696  }
697  std::_Destroy(this->_M_impl._M_start, this->_M_impl._M_finish,
698  _M_get_Tp_allocator());
699  _M_deallocate(this->_M_impl._M_start,
700  this->_M_impl._M_end_of_storage
701  - this->_M_impl._M_start);
702  this->_M_impl._M_start = __new_start;
703  this->_M_impl._M_finish = __new_finish;
704  this->_M_impl._M_end_of_storage = __new_start + __len;
705  }
706  }
707  }
708 
709 
710  // vector<bool>
711  template<typename _Alloc>
712  void
713  vector<bool, _Alloc>::
714  _M_reallocate(size_type __n)
715  {
716  _Bit_pointer __q = this->_M_allocate(__n);
717  iterator __start(std::__addressof(*__q), 0);
718  iterator __finish(_M_copy_aligned(begin(), end(), __start));
719  this->_M_deallocate();
720  this->_M_impl._M_start = __start;
721  this->_M_impl._M_finish = __finish;
722  this->_M_impl._M_end_of_storage = __q + _S_nword(__n);
723  }
724 
725  template<typename _Alloc>
726  void
727  vector<bool, _Alloc>::
728  _M_fill_insert(iterator __position, size_type __n, bool __x)
729  {
730  if (__n == 0)
731  return;
732  if (capacity() - size() >= __n)
733  {
734  std::copy_backward(__position, end(),
735  this->_M_impl._M_finish + difference_type(__n));
736  std::fill(__position, __position + difference_type(__n), __x);
737  this->_M_impl._M_finish += difference_type(__n);
738  }
739  else
740  {
741  const size_type __len =
742  _M_check_len(__n, "vector<bool>::_M_fill_insert");
743  _Bit_pointer __q = this->_M_allocate(__len);
744  iterator __start(std::__addressof(*__q), 0);
745  iterator __i = _M_copy_aligned(begin(), __position, __start);
746  std::fill(__i, __i + difference_type(__n), __x);
747  iterator __finish = std::copy(__position, end(),
748  __i + difference_type(__n));
749  this->_M_deallocate();
750  this->_M_impl._M_end_of_storage = __q + _S_nword(__len);
751  this->_M_impl._M_start = __start;
752  this->_M_impl._M_finish = __finish;
753  }
754  }
755 
756  template<typename _Alloc>
757  template<typename _ForwardIterator>
758  void
759  vector<bool, _Alloc>::
760  _M_insert_range(iterator __position, _ForwardIterator __first,
761  _ForwardIterator __last, std::forward_iterator_tag)
762  {
763  if (__first != __last)
764  {
765  size_type __n = std::distance(__first, __last);
766  if (capacity() - size() >= __n)
767  {
768  std::copy_backward(__position, end(),
769  this->_M_impl._M_finish
770  + difference_type(__n));
771  std::copy(__first, __last, __position);
772  this->_M_impl._M_finish += difference_type(__n);
773  }
774  else
775  {
776  const size_type __len =
777  _M_check_len(__n, "vector<bool>::_M_insert_range");
778  _Bit_pointer __q = this->_M_allocate(__len);
779  iterator __start(std::__addressof(*__q), 0);
780  iterator __i = _M_copy_aligned(begin(), __position, __start);
781  __i = std::copy(__first, __last, __i);
782  iterator __finish = std::copy(__position, end(), __i);
783  this->_M_deallocate();
784  this->_M_impl._M_end_of_storage = __q + _S_nword(__len);
785  this->_M_impl._M_start = __start;
786  this->_M_impl._M_finish = __finish;
787  }
788  }
789  }
790 
791  template<typename _Alloc>
792  void
793  vector<bool, _Alloc>::
794  _M_insert_aux(iterator __position, bool __x)
795  {
796  if (this->_M_impl._M_finish._M_p != this->_M_impl._M_end_addr())
797  {
798  std::copy_backward(__position, this->_M_impl._M_finish,
799  this->_M_impl._M_finish + 1);
800  *__position = __x;
801  ++this->_M_impl._M_finish;
802  }
803  else
804  {
805  const size_type __len =
806  _M_check_len(size_type(1), "vector<bool>::_M_insert_aux");
807  _Bit_pointer __q = this->_M_allocate(__len);
808  iterator __start(std::__addressof(*__q), 0);
809  iterator __i = _M_copy_aligned(begin(), __position, __start);
810  *__i++ = __x;
811  iterator __finish = std::copy(__position, end(), __i);
812  this->_M_deallocate();
813  this->_M_impl._M_end_of_storage = __q + _S_nword(__len);
814  this->_M_impl._M_start = __start;
815  this->_M_impl._M_finish = __finish;
816  }
817  }
818 
819  template<typename _Alloc>
820  typename vector<bool, _Alloc>::iterator
821  vector<bool, _Alloc>::
822  _M_erase(iterator __position)
823  {
824  if (__position + 1 != end())
825  std::copy(__position + 1, end(), __position);
826  --this->_M_impl._M_finish;
827  return __position;
828  }
829 
830  template<typename _Alloc>
831  typename vector<bool, _Alloc>::iterator
832  vector<bool, _Alloc>::
833  _M_erase(iterator __first, iterator __last)
834  {
835  if (__first != __last)
836  _M_erase_at_end(std::copy(__last, end(), __first));
837  return __first;
838  }
839 
840 #if __cplusplus >= 201103L
841  template<typename _Alloc>
842  bool
843  vector<bool, _Alloc>::
844  _M_shrink_to_fit()
845  {
846  if (capacity() - size() < int(_S_word_bit))
847  return false;
848  __try
849  {
850  _M_reallocate(size());
851  return true;
852  }
853  __catch(...)
854  { return false; }
855  }
856 #endif
857 
858 _GLIBCXX_END_NAMESPACE_CONTAINER
859 } // namespace std
860 
861 #if __cplusplus >= 201103L
862 
863 namespace std _GLIBCXX_VISIBILITY(default)
864 {
865 _GLIBCXX_BEGIN_NAMESPACE_VERSION
866 
867  template<typename _Alloc>
868  size_t
869  hash<_GLIBCXX_STD_C::vector<bool, _Alloc>>::
870  operator()(const _GLIBCXX_STD_C::vector<bool, _Alloc>& __b) const noexcept
871  {
872  size_t __hash = 0;
873  using _GLIBCXX_STD_C::_S_word_bit;
874  using _GLIBCXX_STD_C::_Bit_type;
875 
876  const size_t __words = __b.size() / _S_word_bit;
877  if (__words)
878  {
879  const size_t __clength = __words * sizeof(_Bit_type);
880  __hash = std::_Hash_impl::hash(__b._M_impl._M_start._M_p, __clength);
881  }
882 
883  const size_t __extrabits = __b.size() % _S_word_bit;
884  if (__extrabits)
885  {
886  _Bit_type __hiword = *__b._M_impl._M_finish._M_p;
887  __hiword &= ~((~static_cast<_Bit_type>(0)) << __extrabits);
888 
889  const size_t __clength
890  = (__extrabits + __CHAR_BIT__ - 1) / __CHAR_BIT__;
891  if (__words)
892  __hash = std::_Hash_impl::hash(&__hiword, __clength, __hash);
893  else
894  __hash = std::_Hash_impl::hash(&__hiword, __clength);
895  }
896 
897  return __hash;
898  }
899 
900 _GLIBCXX_END_NAMESPACE_VERSION
901 } // namespace std
902 
903 #endif // C++11
904 
905 #endif /* _VECTOR_TCC */
std::vector::end
iterator end() noexcept
Definition: stl_vector.h:581
std::vector::begin
iterator begin() noexcept
Definition: stl_vector.h:563
std::vector::reserve
void reserve(size_type __n)
Attempt to preallocate enough memory for specified number of elements.
Definition: vector.tcc:66
std::fill_n
_OI fill_n(_OI __first, _Size __n, const _Tp &__value)
Fills the range [first,first+n) with copies of value.
Definition: stl_algobase.h:784
std::begin
constexpr const _Tp * begin(initializer_list< _Tp > __ils) noexcept
Return an iterator pointing to the first element of the initializer_list.
Definition: initializer_list:89
std::vector::capacity
size_type capacity() const noexcept
Definition: stl_vector.h:750
std::vector::size
size_type size() const noexcept
Definition: stl_vector.h:670
std::__iterator_category
iterator_traits< _Iter >::iterator_category __iterator_category(const _Iter &)
Definition: stl_iterator_base_types.h:204
std::vector
A standard container which offers fixed time access to individual elements in any order...
Definition: stl_vector.h:216
std::vector::operator=
vector & operator=(const vector &__x)
Vector assignment operator.
Definition: vector.tcc:180
std::end
constexpr const _Tp * end(initializer_list< _Tp > __ils) noexcept
Return an iterator pointing to one past the last element of the initializer_list. ...
Definition: initializer_list:99
std::cbegin
constexpr auto cbegin(const _Container &__cont) noexcept(noexcept(std::begin(__cont))) -> decltype(std::begin(__cont))
Return an iterator pointing to the first element of the const container.
Definition: range_access.h:116
std
ISO C++ entities toplevel namespace is std.
std::__addressof
constexpr _Tp * __addressof(_Tp &__r) noexcept
Same as C++11 std::addressof.
Definition: move.h:47
std::distance
_GLIBCXX17_CONSTEXPR iterator_traits< _InputIterator >::difference_type distance(_InputIterator __first, _InputIterator __last)
A generalization of pointer arithmetic.
Definition: stl_iterator_base_funcs.h:138
std::advance
_GLIBCXX17_CONSTEXPR void advance(_InputIterator &__i, _Distance __n)
A generalization of pointer arithmetic.
Definition: stl_iterator_base_funcs.h:197
std::forward_iterator_tag
Forward iterators support a superset of input iterator operations.
Definition: stl_iterator_base_types.h:95
std::hash
Primary class template hash.
Definition: system_error:142
std::cend
constexpr auto cend(const _Container &__cont) noexcept(noexcept(std::end(__cont))) -> decltype(std::end(__cont))
Return an iterator pointing to one past the last element of the const container.
Definition: range_access.h:127
std::input_iterator_tag
Marking input iterators.
Definition: stl_iterator_base_types.h:89
std::_Destroy
void _Destroy(_Tp *__pointer)
Definition: stl_construct.h:97