libstdc++
vector.tcc
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1 // Vector implementation (out of line) -*- C++ -*-
2 
3 // Copyright (C) 2001-2020 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_VERSION
62 _GLIBCXX_BEGIN_NAMESPACE_CONTAINER
63 
64  template<typename _Tp, typename _Alloc>
65  void
66  vector<_Tp, _Alloc>::
67  reserve(size_type __n)
68  {
69  if (__n > this->max_size())
70  __throw_length_error(__N("vector::reserve"));
71  if (this->capacity() < __n)
72  {
73  const size_type __old_size = size();
74  pointer __tmp;
75 #if __cplusplus >= 201103L
76  if _GLIBCXX17_CONSTEXPR (_S_use_relocate())
77  {
78  __tmp = this->_M_allocate(__n);
79  _S_relocate(this->_M_impl._M_start, this->_M_impl._M_finish,
80  __tmp, _M_get_Tp_allocator());
81  }
82  else
83 #endif
84  {
85  __tmp = _M_allocate_and_copy(__n,
86  _GLIBCXX_MAKE_MOVE_IF_NOEXCEPT_ITERATOR(this->_M_impl._M_start),
87  _GLIBCXX_MAKE_MOVE_IF_NOEXCEPT_ITERATOR(this->_M_impl._M_finish));
88  std::_Destroy(this->_M_impl._M_start, this->_M_impl._M_finish,
89  _M_get_Tp_allocator());
90  }
91  _GLIBCXX_ASAN_ANNOTATE_REINIT;
92  _M_deallocate(this->_M_impl._M_start,
93  this->_M_impl._M_end_of_storage
94  - this->_M_impl._M_start);
95  this->_M_impl._M_start = __tmp;
96  this->_M_impl._M_finish = __tmp + __old_size;
97  this->_M_impl._M_end_of_storage = this->_M_impl._M_start + __n;
98  }
99  }
100 
101 #if __cplusplus >= 201103L
102  template<typename _Tp, typename _Alloc>
103  template<typename... _Args>
104 #if __cplusplus > 201402L
105  typename vector<_Tp, _Alloc>::reference
106 #else
107  void
108 #endif
109  vector<_Tp, _Alloc>::
110  emplace_back(_Args&&... __args)
111  {
112  if (this->_M_impl._M_finish != this->_M_impl._M_end_of_storage)
113  {
114  _GLIBCXX_ASAN_ANNOTATE_GROW(1);
115  _Alloc_traits::construct(this->_M_impl, this->_M_impl._M_finish,
116  std::forward<_Args>(__args)...);
117  ++this->_M_impl._M_finish;
118  _GLIBCXX_ASAN_ANNOTATE_GREW(1);
119  }
120  else
121  _M_realloc_insert(end(), std::forward<_Args>(__args)...);
122 #if __cplusplus > 201402L
123  return back();
124 #endif
125  }
126 #endif
127 
128  template<typename _Tp, typename _Alloc>
129  typename vector<_Tp, _Alloc>::iterator
130  vector<_Tp, _Alloc>::
131 #if __cplusplus >= 201103L
132  insert(const_iterator __position, const value_type& __x)
133 #else
134  insert(iterator __position, const value_type& __x)
135 #endif
136  {
137  const size_type __n = __position - begin();
138  if (this->_M_impl._M_finish != this->_M_impl._M_end_of_storage)
139  if (__position == end())
140  {
141  _GLIBCXX_ASAN_ANNOTATE_GROW(1);
142  _Alloc_traits::construct(this->_M_impl, this->_M_impl._M_finish,
143  __x);
144  ++this->_M_impl._M_finish;
145  _GLIBCXX_ASAN_ANNOTATE_GREW(1);
146  }
147  else
148  {
149 #if __cplusplus >= 201103L
150  const auto __pos = begin() + (__position - cbegin());
151  // __x could be an existing element of this vector, so make a
152  // copy of it before _M_insert_aux moves elements around.
153  _Temporary_value __x_copy(this, __x);
154  _M_insert_aux(__pos, std::move(__x_copy._M_val()));
155 #else
156  _M_insert_aux(__position, __x);
157 #endif
158  }
159  else
160 #if __cplusplus >= 201103L
161  _M_realloc_insert(begin() + (__position - cbegin()), __x);
162 #else
163  _M_realloc_insert(__position, __x);
164 #endif
165 
166  return iterator(this->_M_impl._M_start + __n);
167  }
168 
169  template<typename _Tp, typename _Alloc>
170  typename vector<_Tp, _Alloc>::iterator
171  vector<_Tp, _Alloc>::
172  _M_erase(iterator __position)
173  {
174  if (__position + 1 != end())
175  _GLIBCXX_MOVE3(__position + 1, end(), __position);
176  --this->_M_impl._M_finish;
177  _Alloc_traits::destroy(this->_M_impl, this->_M_impl._M_finish);
178  _GLIBCXX_ASAN_ANNOTATE_SHRINK(1);
179  return __position;
180  }
181 
182  template<typename _Tp, typename _Alloc>
183  typename vector<_Tp, _Alloc>::iterator
184  vector<_Tp, _Alloc>::
185  _M_erase(iterator __first, iterator __last)
186  {
187  if (__first != __last)
188  {
189  if (__last != end())
190  _GLIBCXX_MOVE3(__last, end(), __first);
191  _M_erase_at_end(__first.base() + (end() - __last));
192  }
193  return __first;
194  }
195 
196  template<typename _Tp, typename _Alloc>
197  vector<_Tp, _Alloc>&
198  vector<_Tp, _Alloc>::
199  operator=(const vector<_Tp, _Alloc>& __x)
200  {
201  if (&__x != this)
202  {
203  _GLIBCXX_ASAN_ANNOTATE_REINIT;
204 #if __cplusplus >= 201103L
205  if (_Alloc_traits::_S_propagate_on_copy_assign())
206  {
207  if (!_Alloc_traits::_S_always_equal()
208  && _M_get_Tp_allocator() != __x._M_get_Tp_allocator())
209  {
210  // replacement allocator cannot free existing storage
211  this->clear();
212  _M_deallocate(this->_M_impl._M_start,
213  this->_M_impl._M_end_of_storage
214  - this->_M_impl._M_start);
215  this->_M_impl._M_start = nullptr;
216  this->_M_impl._M_finish = nullptr;
217  this->_M_impl._M_end_of_storage = nullptr;
218  }
219  std::__alloc_on_copy(_M_get_Tp_allocator(),
220  __x._M_get_Tp_allocator());
221  }
222 #endif
223  const size_type __xlen = __x.size();
224  if (__xlen > capacity())
225  {
226  pointer __tmp = _M_allocate_and_copy(__xlen, __x.begin(),
227  __x.end());
228  std::_Destroy(this->_M_impl._M_start, this->_M_impl._M_finish,
229  _M_get_Tp_allocator());
230  _M_deallocate(this->_M_impl._M_start,
231  this->_M_impl._M_end_of_storage
232  - this->_M_impl._M_start);
233  this->_M_impl._M_start = __tmp;
234  this->_M_impl._M_end_of_storage = this->_M_impl._M_start + __xlen;
235  }
236  else if (size() >= __xlen)
237  {
238  std::_Destroy(std::copy(__x.begin(), __x.end(), begin()),
239  end(), _M_get_Tp_allocator());
240  }
241  else
242  {
243  std::copy(__x._M_impl._M_start, __x._M_impl._M_start + size(),
244  this->_M_impl._M_start);
245  std::__uninitialized_copy_a(__x._M_impl._M_start + size(),
246  __x._M_impl._M_finish,
247  this->_M_impl._M_finish,
248  _M_get_Tp_allocator());
249  }
250  this->_M_impl._M_finish = this->_M_impl._M_start + __xlen;
251  }
252  return *this;
253  }
254 
255  template<typename _Tp, typename _Alloc>
256  void
257  vector<_Tp, _Alloc>::
258  _M_fill_assign(size_t __n, const value_type& __val)
259  {
260  if (__n > capacity())
261  {
262  vector __tmp(__n, __val, _M_get_Tp_allocator());
263  __tmp._M_impl._M_swap_data(this->_M_impl);
264  }
265  else if (__n > size())
266  {
267  std::fill(begin(), end(), __val);
268  const size_type __add = __n - size();
269  _GLIBCXX_ASAN_ANNOTATE_GROW(__add);
270  this->_M_impl._M_finish =
271  std::__uninitialized_fill_n_a(this->_M_impl._M_finish,
272  __add, __val, _M_get_Tp_allocator());
273  _GLIBCXX_ASAN_ANNOTATE_GREW(__add);
274  }
275  else
276  _M_erase_at_end(std::fill_n(this->_M_impl._M_start, __n, __val));
277  }
278 
279  template<typename _Tp, typename _Alloc>
280  template<typename _InputIterator>
281  void
282  vector<_Tp, _Alloc>::
283  _M_assign_aux(_InputIterator __first, _InputIterator __last,
284  std::input_iterator_tag)
285  {
286  pointer __cur(this->_M_impl._M_start);
287  for (; __first != __last && __cur != this->_M_impl._M_finish;
288  ++__cur, (void)++__first)
289  *__cur = *__first;
290  if (__first == __last)
291  _M_erase_at_end(__cur);
292  else
293  _M_range_insert(end(), __first, __last,
294  std::__iterator_category(__first));
295  }
296 
297  template<typename _Tp, typename _Alloc>
298  template<typename _ForwardIterator>
299  void
300  vector<_Tp, _Alloc>::
301  _M_assign_aux(_ForwardIterator __first, _ForwardIterator __last,
302  std::forward_iterator_tag)
303  {
304  const size_type __len = std::distance(__first, __last);
305 
306  if (__len > capacity())
307  {
308  _S_check_init_len(__len, _M_get_Tp_allocator());
309  pointer __tmp(_M_allocate_and_copy(__len, __first, __last));
310  std::_Destroy(this->_M_impl._M_start, this->_M_impl._M_finish,
311  _M_get_Tp_allocator());
312  _GLIBCXX_ASAN_ANNOTATE_REINIT;
313  _M_deallocate(this->_M_impl._M_start,
314  this->_M_impl._M_end_of_storage
315  - this->_M_impl._M_start);
316  this->_M_impl._M_start = __tmp;
317  this->_M_impl._M_finish = this->_M_impl._M_start + __len;
318  this->_M_impl._M_end_of_storage = this->_M_impl._M_finish;
319  }
320  else if (size() >= __len)
321  _M_erase_at_end(std::copy(__first, __last, this->_M_impl._M_start));
322  else
323  {
324  _ForwardIterator __mid = __first;
325  std::advance(__mid, size());
326  std::copy(__first, __mid, this->_M_impl._M_start);
327  const size_type __attribute__((__unused__)) __n = __len - size();
328  _GLIBCXX_ASAN_ANNOTATE_GROW(__n);
329  this->_M_impl._M_finish =
330  std::__uninitialized_copy_a(__mid, __last,
331  this->_M_impl._M_finish,
332  _M_get_Tp_allocator());
333  _GLIBCXX_ASAN_ANNOTATE_GREW(__n);
334  }
335  }
336 
337 #if __cplusplus >= 201103L
338  template<typename _Tp, typename _Alloc>
339  auto
340  vector<_Tp, _Alloc>::
341  _M_insert_rval(const_iterator __position, value_type&& __v) -> iterator
342  {
343  const auto __n = __position - cbegin();
344  if (this->_M_impl._M_finish != this->_M_impl._M_end_of_storage)
345  if (__position == cend())
346  {
347  _GLIBCXX_ASAN_ANNOTATE_GROW(1);
348  _Alloc_traits::construct(this->_M_impl, this->_M_impl._M_finish,
349  std::move(__v));
350  ++this->_M_impl._M_finish;
351  _GLIBCXX_ASAN_ANNOTATE_GREW(1);
352  }
353  else
354  _M_insert_aux(begin() + __n, std::move(__v));
355  else
356  _M_realloc_insert(begin() + __n, std::move(__v));
357 
358  return iterator(this->_M_impl._M_start + __n);
359  }
360 
361  template<typename _Tp, typename _Alloc>
362  template<typename... _Args>
363  auto
364  vector<_Tp, _Alloc>::
365  _M_emplace_aux(const_iterator __position, _Args&&... __args)
366  -> iterator
367  {
368  const auto __n = __position - cbegin();
369  if (this->_M_impl._M_finish != this->_M_impl._M_end_of_storage)
370  if (__position == cend())
371  {
372  _GLIBCXX_ASAN_ANNOTATE_GROW(1);
373  _Alloc_traits::construct(this->_M_impl, this->_M_impl._M_finish,
374  std::forward<_Args>(__args)...);
375  ++this->_M_impl._M_finish;
376  _GLIBCXX_ASAN_ANNOTATE_GREW(1);
377  }
378  else
379  {
380  // We need to construct a temporary because something in __args...
381  // could alias one of the elements of the container and so we
382  // need to use it before _M_insert_aux moves elements around.
383  _Temporary_value __tmp(this, std::forward<_Args>(__args)...);
384  _M_insert_aux(begin() + __n, std::move(__tmp._M_val()));
385  }
386  else
387  _M_realloc_insert(begin() + __n, std::forward<_Args>(__args)...);
388 
389  return iterator(this->_M_impl._M_start + __n);
390  }
391 
392  template<typename _Tp, typename _Alloc>
393  template<typename _Arg>
394  void
395  vector<_Tp, _Alloc>::
396  _M_insert_aux(iterator __position, _Arg&& __arg)
397 #else
398  template<typename _Tp, typename _Alloc>
399  void
400  vector<_Tp, _Alloc>::
401  _M_insert_aux(iterator __position, const _Tp& __x)
402 #endif
403  {
404  _GLIBCXX_ASAN_ANNOTATE_GROW(1);
405  _Alloc_traits::construct(this->_M_impl, this->_M_impl._M_finish,
406  _GLIBCXX_MOVE(*(this->_M_impl._M_finish - 1)));
407  ++this->_M_impl._M_finish;
408  _GLIBCXX_ASAN_ANNOTATE_GREW(1);
409 #if __cplusplus < 201103L
410  _Tp __x_copy = __x;
411 #endif
412  _GLIBCXX_MOVE_BACKWARD3(__position.base(),
413  this->_M_impl._M_finish - 2,
414  this->_M_impl._M_finish - 1);
415 #if __cplusplus < 201103L
416  *__position = __x_copy;
417 #else
418  *__position = std::forward<_Arg>(__arg);
419 #endif
420  }
421 
422 #if __cplusplus >= 201103L
423  template<typename _Tp, typename _Alloc>
424  template<typename... _Args>
425  void
426  vector<_Tp, _Alloc>::
427  _M_realloc_insert(iterator __position, _Args&&... __args)
428 #else
429  template<typename _Tp, typename _Alloc>
430  void
431  vector<_Tp, _Alloc>::
432  _M_realloc_insert(iterator __position, const _Tp& __x)
433 #endif
434  {
435  const size_type __len =
436  _M_check_len(size_type(1), "vector::_M_realloc_insert");
437  pointer __old_start = this->_M_impl._M_start;
438  pointer __old_finish = this->_M_impl._M_finish;
439  const size_type __elems_before = __position - begin();
440  pointer __new_start(this->_M_allocate(__len));
441  pointer __new_finish(__new_start);
442  __try
443  {
444  // The order of the three operations is dictated by the C++11
445  // case, where the moves could alter a new element belonging
446  // to the existing vector. This is an issue only for callers
447  // taking the element by lvalue ref (see last bullet of C++11
448  // [res.on.arguments]).
449  _Alloc_traits::construct(this->_M_impl,
450  __new_start + __elems_before,
451 #if __cplusplus >= 201103L
452  std::forward<_Args>(__args)...);
453 #else
454  __x);
455 #endif
456  __new_finish = pointer();
457 
458 #if __cplusplus >= 201103L
459  if _GLIBCXX17_CONSTEXPR (_S_use_relocate())
460  {
461  __new_finish = _S_relocate(__old_start, __position.base(),
462  __new_start, _M_get_Tp_allocator());
463 
464  ++__new_finish;
465 
466  __new_finish = _S_relocate(__position.base(), __old_finish,
467  __new_finish, _M_get_Tp_allocator());
468  }
469  else
470 #endif
471  {
472  __new_finish
473  = std::__uninitialized_move_if_noexcept_a
474  (__old_start, __position.base(),
475  __new_start, _M_get_Tp_allocator());
476 
477  ++__new_finish;
478 
479  __new_finish
480  = std::__uninitialized_move_if_noexcept_a
481  (__position.base(), __old_finish,
482  __new_finish, _M_get_Tp_allocator());
483  }
484  }
485  __catch(...)
486  {
487  if (!__new_finish)
488  _Alloc_traits::destroy(this->_M_impl,
489  __new_start + __elems_before);
490  else
491  std::_Destroy(__new_start, __new_finish, _M_get_Tp_allocator());
492  _M_deallocate(__new_start, __len);
493  __throw_exception_again;
494  }
495 #if __cplusplus >= 201103L
496  if _GLIBCXX17_CONSTEXPR (!_S_use_relocate())
497 #endif
498  std::_Destroy(__old_start, __old_finish, _M_get_Tp_allocator());
499  _GLIBCXX_ASAN_ANNOTATE_REINIT;
500  _M_deallocate(__old_start,
501  this->_M_impl._M_end_of_storage - __old_start);
502  this->_M_impl._M_start = __new_start;
503  this->_M_impl._M_finish = __new_finish;
504  this->_M_impl._M_end_of_storage = __new_start + __len;
505  }
506 
507  template<typename _Tp, typename _Alloc>
508  void
509  vector<_Tp, _Alloc>::
510  _M_fill_insert(iterator __position, size_type __n, const value_type& __x)
511  {
512  if (__n != 0)
513  {
514  if (size_type(this->_M_impl._M_end_of_storage
515  - this->_M_impl._M_finish) >= __n)
516  {
517 #if __cplusplus < 201103L
518  value_type __x_copy = __x;
519 #else
520  _Temporary_value __tmp(this, __x);
521  value_type& __x_copy = __tmp._M_val();
522 #endif
523  const size_type __elems_after = end() - __position;
524  pointer __old_finish(this->_M_impl._M_finish);
525  if (__elems_after > __n)
526  {
527  _GLIBCXX_ASAN_ANNOTATE_GROW(__n);
528  std::__uninitialized_move_a(this->_M_impl._M_finish - __n,
529  this->_M_impl._M_finish,
530  this->_M_impl._M_finish,
531  _M_get_Tp_allocator());
532  this->_M_impl._M_finish += __n;
533  _GLIBCXX_ASAN_ANNOTATE_GREW(__n);
534  _GLIBCXX_MOVE_BACKWARD3(__position.base(),
535  __old_finish - __n, __old_finish);
536  std::fill(__position.base(), __position.base() + __n,
537  __x_copy);
538  }
539  else
540  {
541  _GLIBCXX_ASAN_ANNOTATE_GROW(__n);
542  this->_M_impl._M_finish =
543  std::__uninitialized_fill_n_a(this->_M_impl._M_finish,
544  __n - __elems_after,
545  __x_copy,
546  _M_get_Tp_allocator());
547  _GLIBCXX_ASAN_ANNOTATE_GREW(__n - __elems_after);
548  std::__uninitialized_move_a(__position.base(), __old_finish,
549  this->_M_impl._M_finish,
550  _M_get_Tp_allocator());
551  this->_M_impl._M_finish += __elems_after;
552  _GLIBCXX_ASAN_ANNOTATE_GREW(__elems_after);
553  std::fill(__position.base(), __old_finish, __x_copy);
554  }
555  }
556  else
557  {
558  const size_type __len =
559  _M_check_len(__n, "vector::_M_fill_insert");
560  const size_type __elems_before = __position - begin();
561  pointer __new_start(this->_M_allocate(__len));
562  pointer __new_finish(__new_start);
563  __try
564  {
565  // See _M_realloc_insert above.
566  std::__uninitialized_fill_n_a(__new_start + __elems_before,
567  __n, __x,
568  _M_get_Tp_allocator());
569  __new_finish = pointer();
570 
571  __new_finish
572  = std::__uninitialized_move_if_noexcept_a
573  (this->_M_impl._M_start, __position.base(),
574  __new_start, _M_get_Tp_allocator());
575 
576  __new_finish += __n;
577 
578  __new_finish
579  = std::__uninitialized_move_if_noexcept_a
580  (__position.base(), this->_M_impl._M_finish,
581  __new_finish, _M_get_Tp_allocator());
582  }
583  __catch(...)
584  {
585  if (!__new_finish)
586  std::_Destroy(__new_start + __elems_before,
587  __new_start + __elems_before + __n,
588  _M_get_Tp_allocator());
589  else
590  std::_Destroy(__new_start, __new_finish,
591  _M_get_Tp_allocator());
592  _M_deallocate(__new_start, __len);
593  __throw_exception_again;
594  }
595  std::_Destroy(this->_M_impl._M_start, this->_M_impl._M_finish,
596  _M_get_Tp_allocator());
597  _GLIBCXX_ASAN_ANNOTATE_REINIT;
598  _M_deallocate(this->_M_impl._M_start,
599  this->_M_impl._M_end_of_storage
600  - this->_M_impl._M_start);
601  this->_M_impl._M_start = __new_start;
602  this->_M_impl._M_finish = __new_finish;
603  this->_M_impl._M_end_of_storage = __new_start + __len;
604  }
605  }
606  }
607 
608 #if __cplusplus >= 201103L
609  template<typename _Tp, typename _Alloc>
610  void
611  vector<_Tp, _Alloc>::
612  _M_default_append(size_type __n)
613  {
614  if (__n != 0)
615  {
616  const size_type __size = size();
617  size_type __navail = size_type(this->_M_impl._M_end_of_storage
618  - this->_M_impl._M_finish);
619 
620  if (__size > max_size() || __navail > max_size() - __size)
621  __builtin_unreachable();
622 
623  if (__navail >= __n)
624  {
625  _GLIBCXX_ASAN_ANNOTATE_GROW(__n);
626  this->_M_impl._M_finish =
627  std::__uninitialized_default_n_a(this->_M_impl._M_finish,
628  __n, _M_get_Tp_allocator());
629  _GLIBCXX_ASAN_ANNOTATE_GREW(__n);
630  }
631  else
632  {
633  const size_type __len =
634  _M_check_len(__n, "vector::_M_default_append");
635  pointer __new_start(this->_M_allocate(__len));
636  if _GLIBCXX17_CONSTEXPR (_S_use_relocate())
637  {
638  __try
639  {
640  std::__uninitialized_default_n_a(__new_start + __size,
641  __n, _M_get_Tp_allocator());
642  }
643  __catch(...)
644  {
645  _M_deallocate(__new_start, __len);
646  __throw_exception_again;
647  }
648  _S_relocate(this->_M_impl._M_start, this->_M_impl._M_finish,
649  __new_start, _M_get_Tp_allocator());
650  }
651  else
652  {
653  pointer __destroy_from = pointer();
654  __try
655  {
656  std::__uninitialized_default_n_a(__new_start + __size,
657  __n, _M_get_Tp_allocator());
658  __destroy_from = __new_start + __size;
659  std::__uninitialized_move_if_noexcept_a(
660  this->_M_impl._M_start, this->_M_impl._M_finish,
661  __new_start, _M_get_Tp_allocator());
662  }
663  __catch(...)
664  {
665  if (__destroy_from)
666  std::_Destroy(__destroy_from, __destroy_from + __n,
667  _M_get_Tp_allocator());
668  _M_deallocate(__new_start, __len);
669  __throw_exception_again;
670  }
671  std::_Destroy(this->_M_impl._M_start, this->_M_impl._M_finish,
672  _M_get_Tp_allocator());
673  }
674  _GLIBCXX_ASAN_ANNOTATE_REINIT;
675  _M_deallocate(this->_M_impl._M_start,
676  this->_M_impl._M_end_of_storage
677  - this->_M_impl._M_start);
678  this->_M_impl._M_start = __new_start;
679  this->_M_impl._M_finish = __new_start + __size + __n;
680  this->_M_impl._M_end_of_storage = __new_start + __len;
681  }
682  }
683  }
684 
685  template<typename _Tp, typename _Alloc>
686  bool
687  vector<_Tp, _Alloc>::
688  _M_shrink_to_fit()
689  {
690  if (capacity() == size())
691  return false;
692  _GLIBCXX_ASAN_ANNOTATE_REINIT;
693  return std::__shrink_to_fit_aux<vector>::_S_do_it(*this);
694  }
695 #endif
696 
697  template<typename _Tp, typename _Alloc>
698  template<typename _InputIterator>
699  void
700  vector<_Tp, _Alloc>::
701  _M_range_insert(iterator __pos, _InputIterator __first,
702  _InputIterator __last, std::input_iterator_tag)
703  {
704  if (__pos == end())
705  {
706  for (; __first != __last; ++__first)
707  insert(end(), *__first);
708  }
709  else if (__first != __last)
710  {
711  vector __tmp(__first, __last, _M_get_Tp_allocator());
712  insert(__pos,
713  _GLIBCXX_MAKE_MOVE_ITERATOR(__tmp.begin()),
714  _GLIBCXX_MAKE_MOVE_ITERATOR(__tmp.end()));
715  }
716  }
717 
718  template<typename _Tp, typename _Alloc>
719  template<typename _ForwardIterator>
720  void
721  vector<_Tp, _Alloc>::
722  _M_range_insert(iterator __position, _ForwardIterator __first,
723  _ForwardIterator __last, std::forward_iterator_tag)
724  {
725  if (__first != __last)
726  {
727  const size_type __n = std::distance(__first, __last);
728  if (size_type(this->_M_impl._M_end_of_storage
729  - this->_M_impl._M_finish) >= __n)
730  {
731  const size_type __elems_after = end() - __position;
732  pointer __old_finish(this->_M_impl._M_finish);
733  if (__elems_after > __n)
734  {
735  _GLIBCXX_ASAN_ANNOTATE_GROW(__n);
736  std::__uninitialized_move_a(this->_M_impl._M_finish - __n,
737  this->_M_impl._M_finish,
738  this->_M_impl._M_finish,
739  _M_get_Tp_allocator());
740  this->_M_impl._M_finish += __n;
741  _GLIBCXX_ASAN_ANNOTATE_GREW(__n);
742  _GLIBCXX_MOVE_BACKWARD3(__position.base(),
743  __old_finish - __n, __old_finish);
744  std::copy(__first, __last, __position);
745  }
746  else
747  {
748  _ForwardIterator __mid = __first;
749  std::advance(__mid, __elems_after);
750  _GLIBCXX_ASAN_ANNOTATE_GROW(__n);
751  std::__uninitialized_copy_a(__mid, __last,
752  this->_M_impl._M_finish,
753  _M_get_Tp_allocator());
754  this->_M_impl._M_finish += __n - __elems_after;
755  _GLIBCXX_ASAN_ANNOTATE_GREW(__n - __elems_after);
756  std::__uninitialized_move_a(__position.base(),
757  __old_finish,
758  this->_M_impl._M_finish,
759  _M_get_Tp_allocator());
760  this->_M_impl._M_finish += __elems_after;
761  _GLIBCXX_ASAN_ANNOTATE_GREW(__elems_after);
762  std::copy(__first, __mid, __position);
763  }
764  }
765  else
766  {
767  const size_type __len =
768  _M_check_len(__n, "vector::_M_range_insert");
769  pointer __new_start(this->_M_allocate(__len));
770  pointer __new_finish(__new_start);
771  __try
772  {
773  __new_finish
774  = std::__uninitialized_move_if_noexcept_a
775  (this->_M_impl._M_start, __position.base(),
776  __new_start, _M_get_Tp_allocator());
777  __new_finish
778  = std::__uninitialized_copy_a(__first, __last,
779  __new_finish,
780  _M_get_Tp_allocator());
781  __new_finish
782  = std::__uninitialized_move_if_noexcept_a
783  (__position.base(), this->_M_impl._M_finish,
784  __new_finish, _M_get_Tp_allocator());
785  }
786  __catch(...)
787  {
788  std::_Destroy(__new_start, __new_finish,
789  _M_get_Tp_allocator());
790  _M_deallocate(__new_start, __len);
791  __throw_exception_again;
792  }
793  std::_Destroy(this->_M_impl._M_start, this->_M_impl._M_finish,
794  _M_get_Tp_allocator());
795  _GLIBCXX_ASAN_ANNOTATE_REINIT;
796  _M_deallocate(this->_M_impl._M_start,
797  this->_M_impl._M_end_of_storage
798  - this->_M_impl._M_start);
799  this->_M_impl._M_start = __new_start;
800  this->_M_impl._M_finish = __new_finish;
801  this->_M_impl._M_end_of_storage = __new_start + __len;
802  }
803  }
804  }
805 
806 
807  // vector<bool>
808  template<typename _Alloc>
809  void
810  vector<bool, _Alloc>::
811  _M_reallocate(size_type __n)
812  {
813  _Bit_pointer __q = this->_M_allocate(__n);
814  iterator __start(std::__addressof(*__q), 0);
815  iterator __finish(_M_copy_aligned(begin(), end(), __start));
816  this->_M_deallocate();
817  this->_M_impl._M_start = __start;
818  this->_M_impl._M_finish = __finish;
819  this->_M_impl._M_end_of_storage = __q + _S_nword(__n);
820  }
821 
822  template<typename _Alloc>
823  void
824  vector<bool, _Alloc>::
825  _M_fill_insert(iterator __position, size_type __n, bool __x)
826  {
827  if (__n == 0)
828  return;
829  if (capacity() - size() >= __n)
830  {
831  std::copy_backward(__position, end(),
832  this->_M_impl._M_finish + difference_type(__n));
833  std::fill(__position, __position + difference_type(__n), __x);
834  this->_M_impl._M_finish += difference_type(__n);
835  }
836  else
837  {
838  const size_type __len =
839  _M_check_len(__n, "vector<bool>::_M_fill_insert");
840  _Bit_pointer __q = this->_M_allocate(__len);
841  iterator __start(std::__addressof(*__q), 0);
842  iterator __i = _M_copy_aligned(begin(), __position, __start);
843  std::fill(__i, __i + difference_type(__n), __x);
844  iterator __finish = std::copy(__position, end(),
845  __i + difference_type(__n));
846  this->_M_deallocate();
847  this->_M_impl._M_end_of_storage = __q + _S_nword(__len);
848  this->_M_impl._M_start = __start;
849  this->_M_impl._M_finish = __finish;
850  }
851  }
852 
853  template<typename _Alloc>
854  template<typename _ForwardIterator>
855  void
856  vector<bool, _Alloc>::
857  _M_insert_range(iterator __position, _ForwardIterator __first,
858  _ForwardIterator __last, std::forward_iterator_tag)
859  {
860  if (__first != __last)
861  {
862  size_type __n = std::distance(__first, __last);
863  if (capacity() - size() >= __n)
864  {
865  std::copy_backward(__position, end(),
866  this->_M_impl._M_finish
867  + difference_type(__n));
868  std::copy(__first, __last, __position);
869  this->_M_impl._M_finish += difference_type(__n);
870  }
871  else
872  {
873  const size_type __len =
874  _M_check_len(__n, "vector<bool>::_M_insert_range");
875  _Bit_pointer __q = this->_M_allocate(__len);
876  iterator __start(std::__addressof(*__q), 0);
877  iterator __i = _M_copy_aligned(begin(), __position, __start);
878  __i = std::copy(__first, __last, __i);
879  iterator __finish = std::copy(__position, end(), __i);
880  this->_M_deallocate();
881  this->_M_impl._M_end_of_storage = __q + _S_nword(__len);
882  this->_M_impl._M_start = __start;
883  this->_M_impl._M_finish = __finish;
884  }
885  }
886  }
887 
888  template<typename _Alloc>
889  void
890  vector<bool, _Alloc>::
891  _M_insert_aux(iterator __position, bool __x)
892  {
893  if (this->_M_impl._M_finish._M_p != this->_M_impl._M_end_addr())
894  {
895  std::copy_backward(__position, this->_M_impl._M_finish,
896  this->_M_impl._M_finish + 1);
897  *__position = __x;
898  ++this->_M_impl._M_finish;
899  }
900  else
901  {
902  const size_type __len =
903  _M_check_len(size_type(1), "vector<bool>::_M_insert_aux");
904  _Bit_pointer __q = this->_M_allocate(__len);
905  iterator __start(std::__addressof(*__q), 0);
906  iterator __i = _M_copy_aligned(begin(), __position, __start);
907  *__i++ = __x;
908  iterator __finish = std::copy(__position, end(), __i);
909  this->_M_deallocate();
910  this->_M_impl._M_end_of_storage = __q + _S_nword(__len);
911  this->_M_impl._M_start = __start;
912  this->_M_impl._M_finish = __finish;
913  }
914  }
915 
916  template<typename _Alloc>
917  typename vector<bool, _Alloc>::iterator
918  vector<bool, _Alloc>::
919  _M_erase(iterator __position)
920  {
921  if (__position + 1 != end())
922  std::copy(__position + 1, end(), __position);
923  --this->_M_impl._M_finish;
924  return __position;
925  }
926 
927  template<typename _Alloc>
928  typename vector<bool, _Alloc>::iterator
929  vector<bool, _Alloc>::
930  _M_erase(iterator __first, iterator __last)
931  {
932  if (__first != __last)
933  _M_erase_at_end(std::copy(__last, end(), __first));
934  return __first;
935  }
936 
937 #if __cplusplus >= 201103L
938  template<typename _Alloc>
939  bool
940  vector<bool, _Alloc>::
941  _M_shrink_to_fit()
942  {
943  if (capacity() - size() < int(_S_word_bit))
944  return false;
945  __try
946  {
947  if (size_type __n = size())
948  _M_reallocate(__n);
949  else
950  {
951  this->_M_deallocate();
952  this->_M_impl._M_reset();
953  }
954  return true;
955  }
956  __catch(...)
957  { return false; }
958  }
959 #endif
960 
961 _GLIBCXX_END_NAMESPACE_CONTAINER
962 _GLIBCXX_END_NAMESPACE_VERSION
963 } // namespace std
964 
965 #if __cplusplus >= 201103L
966 
967 namespace std _GLIBCXX_VISIBILITY(default)
968 {
969 _GLIBCXX_BEGIN_NAMESPACE_VERSION
970 
971  template<typename _Alloc>
972  size_t
973  hash<_GLIBCXX_STD_C::vector<bool, _Alloc>>::
974  operator()(const _GLIBCXX_STD_C::vector<bool, _Alloc>& __b) const noexcept
975  {
976  size_t __hash = 0;
977  using _GLIBCXX_STD_C::_S_word_bit;
978  using _GLIBCXX_STD_C::_Bit_type;
979 
980  const size_t __words = __b.size() / _S_word_bit;
981  if (__words)
982  {
983  const size_t __clength = __words * sizeof(_Bit_type);
984  __hash = std::_Hash_impl::hash(__b._M_impl._M_start._M_p, __clength);
985  }
986 
987  const size_t __extrabits = __b.size() % _S_word_bit;
988  if (__extrabits)
989  {
990  _Bit_type __hiword = *__b._M_impl._M_finish._M_p;
991  __hiword &= ~((~static_cast<_Bit_type>(0)) << __extrabits);
992 
993  const size_t __clength
994  = (__extrabits + __CHAR_BIT__ - 1) / __CHAR_BIT__;
995  if (__words)
996  __hash = std::_Hash_impl::hash(&__hiword, __clength, __hash);
997  else
998  __hash = std::_Hash_impl::hash(&__hiword, __clength);
999  }
1000 
1001  return __hash;
1002  }
1003 
1004 _GLIBCXX_END_NAMESPACE_VERSION
1005 } // namespace std
1006 
1007 #endif // C++11
1008 
1009 #undef _GLIBCXX_ASAN_ANNOTATE_REINIT
1010 #undef _GLIBCXX_ASAN_ANNOTATE_GROW
1011 #undef _GLIBCXX_ASAN_ANNOTATE_GREW
1012 #undef _GLIBCXX_ASAN_ANNOTATE_SHRINK
1013 
1014 #endif /* _VECTOR_TCC */
std::__addressof
constexpr _Tp * __addressof(_Tp &__r) noexcept
Same as C++11 std::addressof.
Definition: move.h:49
std::move
constexpr std::remove_reference< _Tp >::type && move(_Tp &&__t) noexcept
Convert a value to an rvalue.
Definition: move.h:101
std::end
_Tp * end(valarray< _Tp > &__va) noexcept
Return an iterator pointing to one past the last element of the valarray.
Definition: valarray:1234
std::begin
_Tp * begin(valarray< _Tp > &__va) noexcept
Return an iterator pointing to the first element of the valarray.
Definition: valarray:1214
std::__iterator_category
constexpr iterator_traits< _Iter >::iterator_category __iterator_category(const _Iter &)
Definition: stl_iterator_base_types.h:238
std
ISO C++ entities toplevel namespace is std.
std::distance
constexpr iterator_traits< _InputIterator >::difference_type distance(_InputIterator __first, _InputIterator __last)
A generalization of pointer arithmetic.
Definition: stl_iterator_base_funcs.h:138
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:130
std::advance
constexpr void advance(_InputIterator &__i, _Distance __n)
A generalization of pointer arithmetic.
Definition: stl_iterator_base_funcs.h:202
std::_Destroy
void _Destroy(_ForwardIterator __first, _ForwardIterator __last, _Allocator &__alloc)
Definition: bits/alloc_traits.h:825
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:119
std::input_iterator_tag
Marking input iterators.
Definition: stl_iterator_base_types.h:93
std::forward_iterator_tag
Forward iterators support a superset of input iterator operations.
Definition: stl_iterator_base_types.h:99
std::iterator
Common iterator class.
Definition: stl_iterator_base_types.h:128
std::vector
A standard container which offers fixed time access to individual elements in any order.
Definition: stl_vector.h:390
std::vector::reserve
void reserve(size_type __n)
Attempt to preallocate enough memory for specified number of elements.
Definition: vector.tcc:67
std::vector::operator=
vector & operator=(const vector &__x)
Vector assignment operator.
Definition: vector.tcc:199
std::vector::begin
iterator begin() noexcept
Definition: stl_vector.h:811
std::vector::end
iterator end() noexcept
Definition: stl_vector.h:829
std::vector::size
size_type size() const noexcept
Definition: stl_vector.h:918
std::vector::capacity
size_type capacity() const noexcept
Definition: stl_vector.h:998