1// Vector implementation (out of line) -*- C++ -*-
2
3// Copyright (C) 2001-2023 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
59namespace std _GLIBCXX_VISIBILITY(default)
60{
61_GLIBCXX_BEGIN_NAMESPACE_VERSION
62_GLIBCXX_BEGIN_NAMESPACE_CONTAINER
63
64 template<typename _Tp, typename _Alloc>
65 _GLIBCXX20_CONSTEXPR
66 void
67 vector<_Tp, _Alloc>::
68 reserve(size_type __n)
69 {
70 if (__n > this->max_size())
71 __throw_length_error(__N("vector::reserve"));
72 if (this->capacity() < __n)
73 {
74 const size_type __old_size = size();
75 pointer __tmp;
76#if __cplusplus >= 201103L
77 if _GLIBCXX17_CONSTEXPR (_S_use_relocate())
78 {
79 __tmp = this->_M_allocate(__n);
80 _S_relocate(first: this->_M_impl._M_start, last: this->_M_impl._M_finish,
81 result: __tmp, alloc&: _M_get_Tp_allocator());
82 }
83 else
84#endif
85 {
86 __tmp = _M_allocate_and_copy(__n,
87 _GLIBCXX_MAKE_MOVE_IF_NOEXCEPT_ITERATOR(this->_M_impl._M_start),
88 _GLIBCXX_MAKE_MOVE_IF_NOEXCEPT_ITERATOR(this->_M_impl._M_finish));
89 std::_Destroy(this->_M_impl._M_start, this->_M_impl._M_finish,
90 _M_get_Tp_allocator());
91 }
92 _GLIBCXX_ASAN_ANNOTATE_REINIT;
93 _M_deallocate(this->_M_impl._M_start,
94 this->_M_impl._M_end_of_storage
95 - this->_M_impl._M_start);
96 this->_M_impl._M_start = __tmp;
97 this->_M_impl._M_finish = __tmp + __old_size;
98 this->_M_impl._M_end_of_storage = this->_M_impl._M_start + __n;
99 }
100 }
101
102#if __cplusplus >= 201103L
103 template<typename _Tp, typename _Alloc>
104 template<typename... _Args>
105#if __cplusplus > 201402L
106 _GLIBCXX20_CONSTEXPR
107 typename vector<_Tp, _Alloc>::reference
108#else
109 void
110#endif
111 vector<_Tp, _Alloc>::
112 emplace_back(_Args&&... __args)
113 {
114 if (this->_M_impl._M_finish != this->_M_impl._M_end_of_storage)
115 {
116 _GLIBCXX_ASAN_ANNOTATE_GROW(1);
117 _Alloc_traits::construct(this->_M_impl, this->_M_impl._M_finish,
118 std::forward<_Args>(__args)...);
119 ++this->_M_impl._M_finish;
120 _GLIBCXX_ASAN_ANNOTATE_GREW(1);
121 }
122 else
123 _M_realloc_insert(end(), std::forward<_Args>(__args)...);
124#if __cplusplus > 201402L
125 return back();
126#endif
127 }
128#endif
129
130 template<typename _Tp, typename _Alloc>
131 _GLIBCXX20_CONSTEXPR
132 typename vector<_Tp, _Alloc>::iterator
133 vector<_Tp, _Alloc>::
134#if __cplusplus >= 201103L
135 insert(const_iterator __position, const value_type& __x)
136#else
137 insert(iterator __position, const value_type& __x)
138#endif
139 {
140 const size_type __n = __position - begin();
141 if (this->_M_impl._M_finish != this->_M_impl._M_end_of_storage)
142 {
143 __glibcxx_assert(__position != const_iterator());
144 if (!(__position != const_iterator()))
145 __builtin_unreachable(); // PR 106434
146
147 if (__position == end())
148 {
149 _GLIBCXX_ASAN_ANNOTATE_GROW(1);
150 _Alloc_traits::construct(this->_M_impl, this->_M_impl._M_finish,
151 __x);
152 ++this->_M_impl._M_finish;
153 _GLIBCXX_ASAN_ANNOTATE_GREW(1);
154 }
155 else
156 {
157#if __cplusplus >= 201103L
158 const auto __pos = begin() + (__position - cbegin());
159 // __x could be an existing element of this vector, so make a
160 // copy of it before _M_insert_aux moves elements around.
161 _Temporary_value __x_copy(this, __x);
162 _M_insert_aux(__pos, std::move(__x_copy._M_val()));
163#else
164 _M_insert_aux(__position, __x);
165#endif
166 }
167 }
168 else
169#if __cplusplus >= 201103L
170 _M_realloc_insert(begin() + (__position - cbegin()), __x);
171#else
172 _M_realloc_insert(__position, __x);
173#endif
174
175 return iterator(this->_M_impl._M_start + __n);
176 }
177
178 template<typename _Tp, typename _Alloc>
179 _GLIBCXX20_CONSTEXPR
180 typename vector<_Tp, _Alloc>::iterator
181 vector<_Tp, _Alloc>::
182 _M_erase(iterator __position)
183 {
184 if (__position + 1 != end())
185 _GLIBCXX_MOVE3(__position + 1, end(), __position);
186 --this->_M_impl._M_finish;
187 _Alloc_traits::destroy(this->_M_impl, this->_M_impl._M_finish);
188 _GLIBCXX_ASAN_ANNOTATE_SHRINK(1);
189 return __position;
190 }
191
192 template<typename _Tp, typename _Alloc>
193 _GLIBCXX20_CONSTEXPR
194 typename vector<_Tp, _Alloc>::iterator
195 vector<_Tp, _Alloc>::
196 _M_erase(iterator __first, iterator __last)
197 {
198 if (__first != __last)
199 {
200 if (__last != end())
201 _GLIBCXX_MOVE3(__last, end(), __first);
202 _M_erase_at_end(pos: __first.base() + (end() - __last));
203 }
204 return __first;
205 }
206
207 template<typename _Tp, typename _Alloc>
208 _GLIBCXX20_CONSTEXPR
209 vector<_Tp, _Alloc>&
210 vector<_Tp, _Alloc>::
211 operator=(const vector<_Tp, _Alloc>& __x)
212 {
213 if (std::__addressof(__x) != this)
214 {
215 _GLIBCXX_ASAN_ANNOTATE_REINIT;
216#if __cplusplus >= 201103L
217 if (_Alloc_traits::_S_propagate_on_copy_assign())
218 {
219 if (!_Alloc_traits::_S_always_equal()
220 && _M_get_Tp_allocator() != __x._M_get_Tp_allocator())
221 {
222 // replacement allocator cannot free existing storage
223 this->clear();
224 _M_deallocate(this->_M_impl._M_start,
225 this->_M_impl._M_end_of_storage
226 - this->_M_impl._M_start);
227 this->_M_impl._M_start = nullptr;
228 this->_M_impl._M_finish = nullptr;
229 this->_M_impl._M_end_of_storage = nullptr;
230 }
231 std::__alloc_on_copy(_M_get_Tp_allocator(),
232 __x._M_get_Tp_allocator());
233 }
234#endif
235 const size_type __xlen = __x.size();
236 if (__xlen > capacity())
237 {
238 pointer __tmp = _M_allocate_and_copy(__xlen, __x.begin(),
239 __x.end());
240 std::_Destroy(this->_M_impl._M_start, this->_M_impl._M_finish,
241 _M_get_Tp_allocator());
242 _M_deallocate(this->_M_impl._M_start,
243 this->_M_impl._M_end_of_storage
244 - this->_M_impl._M_start);
245 this->_M_impl._M_start = __tmp;
246 this->_M_impl._M_end_of_storage = this->_M_impl._M_start + __xlen;
247 }
248 else if (size() >= __xlen)
249 {
250 std::_Destroy(std::copy(__x.begin(), __x.end(), begin()),
251 end(), _M_get_Tp_allocator());
252 }
253 else
254 {
255 std::copy(__x._M_impl._M_start, __x._M_impl._M_start + size(),
256 this->_M_impl._M_start);
257 std::__uninitialized_copy_a(__x._M_impl._M_start + size(),
258 __x._M_impl._M_finish,
259 this->_M_impl._M_finish,
260 _M_get_Tp_allocator());
261 }
262 this->_M_impl._M_finish = this->_M_impl._M_start + __xlen;
263 }
264 return *this;
265 }
266
267 template<typename _Tp, typename _Alloc>
268 _GLIBCXX20_CONSTEXPR
269 void
270 vector<_Tp, _Alloc>::
271 _M_fill_assign(size_t __n, const value_type& __val)
272 {
273 if (__n > capacity())
274 {
275 vector __tmp(__n, __val, _M_get_Tp_allocator());
276 __tmp._M_impl._M_swap_data(this->_M_impl);
277 }
278 else if (__n > size())
279 {
280 std::fill(begin(), end(), __val);
281 const size_type __add = __n - size();
282 _GLIBCXX_ASAN_ANNOTATE_GROW(__add);
283 this->_M_impl._M_finish =
284 std::__uninitialized_fill_n_a(this->_M_impl._M_finish,
285 __add, __val, _M_get_Tp_allocator());
286 _GLIBCXX_ASAN_ANNOTATE_GREW(__add);
287 }
288 else
289 _M_erase_at_end(pos: std::fill_n(this->_M_impl._M_start, __n, __val));
290 }
291
292 template<typename _Tp, typename _Alloc>
293 template<typename _InputIterator>
294 _GLIBCXX20_CONSTEXPR
295 void
296 vector<_Tp, _Alloc>::
297 _M_assign_aux(_InputIterator __first, _InputIterator __last,
298 std::input_iterator_tag)
299 {
300 pointer __cur(this->_M_impl._M_start);
301 for (; __first != __last && __cur != this->_M_impl._M_finish;
302 ++__cur, (void)++__first)
303 *__cur = *__first;
304 if (__first == __last)
305 _M_erase_at_end(pos: __cur);
306 else
307 _M_range_insert(end(), __first, __last,
308 std::__iterator_category(__first));
309 }
310
311 template<typename _Tp, typename _Alloc>
312 template<typename _ForwardIterator>
313 _GLIBCXX20_CONSTEXPR
314 void
315 vector<_Tp, _Alloc>::
316 _M_assign_aux(_ForwardIterator __first, _ForwardIterator __last,
317 std::forward_iterator_tag)
318 {
319 const size_type __len = std::distance(__first, __last);
320
321 if (__len > capacity())
322 {
323 _S_check_init_len(n: __len, a: _M_get_Tp_allocator());
324 pointer __tmp(_M_allocate_and_copy(__len, __first, __last));
325 std::_Destroy(this->_M_impl._M_start, this->_M_impl._M_finish,
326 _M_get_Tp_allocator());
327 _GLIBCXX_ASAN_ANNOTATE_REINIT;
328 _M_deallocate(this->_M_impl._M_start,
329 this->_M_impl._M_end_of_storage
330 - this->_M_impl._M_start);
331 this->_M_impl._M_start = __tmp;
332 this->_M_impl._M_finish = this->_M_impl._M_start + __len;
333 this->_M_impl._M_end_of_storage = this->_M_impl._M_finish;
334 }
335 else if (size() >= __len)
336 _M_erase_at_end(pos: std::copy(__first, __last, this->_M_impl._M_start));
337 else
338 {
339 _ForwardIterator __mid = __first;
340 std::advance(__mid, size());
341 std::copy(__first, __mid, this->_M_impl._M_start);
342 const size_type __attribute__((__unused__)) __n = __len - size();
343 _GLIBCXX_ASAN_ANNOTATE_GROW(__n);
344 this->_M_impl._M_finish =
345 std::__uninitialized_copy_a(__mid, __last,
346 this->_M_impl._M_finish,
347 _M_get_Tp_allocator());
348 _GLIBCXX_ASAN_ANNOTATE_GREW(__n);
349 }
350 }
351
352#if __cplusplus >= 201103L
353 template<typename _Tp, typename _Alloc>
354 _GLIBCXX20_CONSTEXPR
355 auto
356 vector<_Tp, _Alloc>::
357 _M_insert_rval(const_iterator __position, value_type&& __v) -> iterator
358 {
359 const auto __n = __position - cbegin();
360 if (this->_M_impl._M_finish != this->_M_impl._M_end_of_storage)
361 if (__position == cend())
362 {
363 _GLIBCXX_ASAN_ANNOTATE_GROW(1);
364 _Alloc_traits::construct(this->_M_impl, this->_M_impl._M_finish,
365 std::move(__v));
366 ++this->_M_impl._M_finish;
367 _GLIBCXX_ASAN_ANNOTATE_GREW(1);
368 }
369 else
370 _M_insert_aux(begin() + __n, std::move(__v));
371 else
372 _M_realloc_insert(begin() + __n, std::move(__v));
373
374 return iterator(this->_M_impl._M_start + __n);
375 }
376
377 template<typename _Tp, typename _Alloc>
378 template<typename... _Args>
379 _GLIBCXX20_CONSTEXPR
380 auto
381 vector<_Tp, _Alloc>::
382 _M_emplace_aux(const_iterator __position, _Args&&... __args)
383 -> iterator
384 {
385 const auto __n = __position - cbegin();
386 if (this->_M_impl._M_finish != this->_M_impl._M_end_of_storage)
387 if (__position == cend())
388 {
389 _GLIBCXX_ASAN_ANNOTATE_GROW(1);
390 _Alloc_traits::construct(this->_M_impl, this->_M_impl._M_finish,
391 std::forward<_Args>(__args)...);
392 ++this->_M_impl._M_finish;
393 _GLIBCXX_ASAN_ANNOTATE_GREW(1);
394 }
395 else
396 {
397 // We need to construct a temporary because something in __args...
398 // could alias one of the elements of the container and so we
399 // need to use it before _M_insert_aux moves elements around.
400 _Temporary_value __tmp(this, std::forward<_Args>(__args)...);
401 _M_insert_aux(begin() + __n, std::move(__tmp._M_val()));
402 }
403 else
404 _M_realloc_insert(begin() + __n, std::forward<_Args>(__args)...);
405
406 return iterator(this->_M_impl._M_start + __n);
407 }
408
409 template<typename _Tp, typename _Alloc>
410 template<typename _Arg>
411 _GLIBCXX20_CONSTEXPR
412 void
413 vector<_Tp, _Alloc>::
414 _M_insert_aux(iterator __position, _Arg&& __arg)
415#else
416 template<typename _Tp, typename _Alloc>
417 void
418 vector<_Tp, _Alloc>::
419 _M_insert_aux(iterator __position, const _Tp& __x)
420#endif
421 {
422 _GLIBCXX_ASAN_ANNOTATE_GROW(1);
423 _Alloc_traits::construct(this->_M_impl, this->_M_impl._M_finish,
424 _GLIBCXX_MOVE(*(this->_M_impl._M_finish - 1)));
425 ++this->_M_impl._M_finish;
426 _GLIBCXX_ASAN_ANNOTATE_GREW(1);
427#if __cplusplus < 201103L
428 _Tp __x_copy = __x;
429#endif
430 _GLIBCXX_MOVE_BACKWARD3(__position.base(),
431 this->_M_impl._M_finish - 2,
432 this->_M_impl._M_finish - 1);
433#if __cplusplus < 201103L
434 *__position = __x_copy;
435#else
436 *__position = std::forward<_Arg>(__arg);
437#endif
438 }
439
440#if __cplusplus >= 201103L
441 template<typename _Tp, typename _Alloc>
442 template<typename... _Args>
443 _GLIBCXX20_CONSTEXPR
444 void
445 vector<_Tp, _Alloc>::
446 _M_realloc_insert(iterator __position, _Args&&... __args)
447#else
448 template<typename _Tp, typename _Alloc>
449 void
450 vector<_Tp, _Alloc>::
451 _M_realloc_insert(iterator __position, const _Tp& __x)
452#endif
453 {
454 const size_type __len =
455 _M_check_len(n: size_type(1), s: "vector::_M_realloc_insert");
456 pointer __old_start = this->_M_impl._M_start;
457 pointer __old_finish = this->_M_impl._M_finish;
458 const size_type __elems_before = __position - begin();
459 pointer __new_start(this->_M_allocate(__len));
460 pointer __new_finish(__new_start);
461 __try
462 {
463 // The order of the three operations is dictated by the C++11
464 // case, where the moves could alter a new element belonging
465 // to the existing vector. This is an issue only for callers
466 // taking the element by lvalue ref (see last bullet of C++11
467 // [res.on.arguments]).
468 _Alloc_traits::construct(this->_M_impl,
469 __new_start + __elems_before,
470#if __cplusplus >= 201103L
471 std::forward<_Args>(__args)...);
472#else
473 __x);
474#endif
475 __new_finish = pointer();
476
477#if __cplusplus >= 201103L
478 if _GLIBCXX17_CONSTEXPR (_S_use_relocate())
479 {
480 __new_finish = _S_relocate(first: __old_start, last: __position.base(),
481 result: __new_start, alloc&: _M_get_Tp_allocator());
482
483 ++__new_finish;
484
485 __new_finish = _S_relocate(first: __position.base(), last: __old_finish,
486 result: __new_finish, alloc&: _M_get_Tp_allocator());
487 }
488 else
489#endif
490 {
491 __new_finish
492 = std::__uninitialized_move_if_noexcept_a
493 (__old_start, __position.base(),
494 __new_start, _M_get_Tp_allocator());
495
496 ++__new_finish;
497
498 __new_finish
499 = std::__uninitialized_move_if_noexcept_a
500 (__position.base(), __old_finish,
501 __new_finish, _M_get_Tp_allocator());
502 }
503 }
504 __catch(...)
505 {
506 if (!__new_finish)
507 _Alloc_traits::destroy(this->_M_impl,
508 __new_start + __elems_before);
509 else
510 std::_Destroy(__new_start, __new_finish, _M_get_Tp_allocator());
511 _M_deallocate(__new_start, __len);
512 __throw_exception_again;
513 }
514#if __cplusplus >= 201103L
515 if _GLIBCXX17_CONSTEXPR (!_S_use_relocate())
516#endif
517 std::_Destroy(__old_start, __old_finish, _M_get_Tp_allocator());
518 _GLIBCXX_ASAN_ANNOTATE_REINIT;
519 _M_deallocate(__old_start,
520 this->_M_impl._M_end_of_storage - __old_start);
521 this->_M_impl._M_start = __new_start;
522 this->_M_impl._M_finish = __new_finish;
523 this->_M_impl._M_end_of_storage = __new_start + __len;
524 }
525
526 template<typename _Tp, typename _Alloc>
527 _GLIBCXX20_CONSTEXPR
528 void
529 vector<_Tp, _Alloc>::
530 _M_fill_insert(iterator __position, size_type __n, const value_type& __x)
531 {
532 if (__n != 0)
533 {
534 if (size_type(this->_M_impl._M_end_of_storage
535 - this->_M_impl._M_finish) >= __n)
536 {
537#if __cplusplus < 201103L
538 value_type __x_copy = __x;
539#else
540 _Temporary_value __tmp(this, __x);
541 value_type& __x_copy = __tmp._M_val();
542#endif
543 const size_type __elems_after = end() - __position;
544 pointer __old_finish(this->_M_impl._M_finish);
545 if (__elems_after > __n)
546 {
547 _GLIBCXX_ASAN_ANNOTATE_GROW(__n);
548 std::__uninitialized_move_a(__old_finish - __n,
549 __old_finish,
550 __old_finish,
551 _M_get_Tp_allocator());
552 this->_M_impl._M_finish += __n;
553 _GLIBCXX_ASAN_ANNOTATE_GREW(__n);
554 _GLIBCXX_MOVE_BACKWARD3(__position.base(),
555 __old_finish - __n, __old_finish);
556 std::fill(__position.base(), __position.base() + __n,
557 __x_copy);
558 }
559 else
560 {
561 _GLIBCXX_ASAN_ANNOTATE_GROW(__n);
562 this->_M_impl._M_finish =
563 std::__uninitialized_fill_n_a(__old_finish,
564 __n - __elems_after,
565 __x_copy,
566 _M_get_Tp_allocator());
567 _GLIBCXX_ASAN_ANNOTATE_GREW(__n - __elems_after);
568 std::__uninitialized_move_a(__position.base(), __old_finish,
569 this->_M_impl._M_finish,
570 _M_get_Tp_allocator());
571 this->_M_impl._M_finish += __elems_after;
572 _GLIBCXX_ASAN_ANNOTATE_GREW(__elems_after);
573 std::fill(__position.base(), __old_finish, __x_copy);
574 }
575 }
576 else
577 {
578 // Make local copies of these members because the compiler thinks
579 // the allocator can alter them if 'this' is globally reachable.
580 pointer __old_start = this->_M_impl._M_start;
581 pointer __old_finish = this->_M_impl._M_finish;
582 const pointer __pos = __position.base();
583
584 const size_type __len =
585 _M_check_len(__n, s: "vector::_M_fill_insert");
586 const size_type __elems_before = __pos - __old_start;
587 pointer __new_start(this->_M_allocate(__len));
588 pointer __new_finish(__new_start);
589 __try
590 {
591 // See _M_realloc_insert above.
592 std::__uninitialized_fill_n_a(__new_start + __elems_before,
593 __n, __x,
594 _M_get_Tp_allocator());
595 __new_finish = pointer();
596
597 __new_finish
598 = std::__uninitialized_move_if_noexcept_a
599 (__old_start, __pos, __new_start, _M_get_Tp_allocator());
600
601 __new_finish += __n;
602
603 __new_finish
604 = std::__uninitialized_move_if_noexcept_a
605 (__pos, __old_finish, __new_finish, _M_get_Tp_allocator());
606 }
607 __catch(...)
608 {
609 if (!__new_finish)
610 std::_Destroy(__new_start + __elems_before,
611 __new_start + __elems_before + __n,
612 _M_get_Tp_allocator());
613 else
614 std::_Destroy(__new_start, __new_finish,
615 _M_get_Tp_allocator());
616 _M_deallocate(__new_start, __len);
617 __throw_exception_again;
618 }
619 std::_Destroy(__old_start, __old_finish, _M_get_Tp_allocator());
620 _GLIBCXX_ASAN_ANNOTATE_REINIT;
621 _M_deallocate(__old_start,
622 this->_M_impl._M_end_of_storage - __old_start);
623 this->_M_impl._M_start = __new_start;
624 this->_M_impl._M_finish = __new_finish;
625 this->_M_impl._M_end_of_storage = __new_start + __len;
626 }
627 }
628 }
629
630#if __cplusplus >= 201103L
631 template<typename _Tp, typename _Alloc>
632 _GLIBCXX20_CONSTEXPR
633 void
634 vector<_Tp, _Alloc>::
635 _M_default_append(size_type __n)
636 {
637 if (__n != 0)
638 {
639 const size_type __size = size();
640 size_type __navail = size_type(this->_M_impl._M_end_of_storage
641 - this->_M_impl._M_finish);
642
643 if (__size > max_size() || __navail > max_size() - __size)
644 __builtin_unreachable();
645
646 if (__navail >= __n)
647 {
648 _GLIBCXX_ASAN_ANNOTATE_GROW(__n);
649 this->_M_impl._M_finish =
650 std::__uninitialized_default_n_a(this->_M_impl._M_finish,
651 __n, _M_get_Tp_allocator());
652 _GLIBCXX_ASAN_ANNOTATE_GREW(__n);
653 }
654 else
655 {
656 // Make local copies of these members because the compiler thinks
657 // the allocator can alter them if 'this' is globally reachable.
658 pointer __old_start = this->_M_impl._M_start;
659 pointer __old_finish = this->_M_impl._M_finish;
660
661 const size_type __len =
662 _M_check_len(__n, s: "vector::_M_default_append");
663 pointer __new_start(this->_M_allocate(__len));
664 if _GLIBCXX17_CONSTEXPR (_S_use_relocate())
665 {
666 __try
667 {
668 std::__uninitialized_default_n_a(__new_start + __size,
669 __n, _M_get_Tp_allocator());
670 }
671 __catch(...)
672 {
673 _M_deallocate(__new_start, __len);
674 __throw_exception_again;
675 }
676 _S_relocate(first: __old_start, last: __old_finish,
677 result: __new_start, alloc&: _M_get_Tp_allocator());
678 }
679 else
680 {
681 pointer __destroy_from = pointer();
682 __try
683 {
684 std::__uninitialized_default_n_a(__new_start + __size,
685 __n, _M_get_Tp_allocator());
686 __destroy_from = __new_start + __size;
687 std::__uninitialized_move_if_noexcept_a(
688 __old_start, __old_finish,
689 __new_start, _M_get_Tp_allocator());
690 }
691 __catch(...)
692 {
693 if (__destroy_from)
694 std::_Destroy(__destroy_from, __destroy_from + __n,
695 _M_get_Tp_allocator());
696 _M_deallocate(__new_start, __len);
697 __throw_exception_again;
698 }
699 std::_Destroy(__old_start, __old_finish,
700 _M_get_Tp_allocator());
701 }
702 _GLIBCXX_ASAN_ANNOTATE_REINIT;
703 _M_deallocate(__old_start,
704 this->_M_impl._M_end_of_storage - __old_start);
705 this->_M_impl._M_start = __new_start;
706 this->_M_impl._M_finish = __new_start + __size + __n;
707 this->_M_impl._M_end_of_storage = __new_start + __len;
708 }
709 }
710 }
711
712 template<typename _Tp, typename _Alloc>
713 _GLIBCXX20_CONSTEXPR
714 bool
715 vector<_Tp, _Alloc>::
716 _M_shrink_to_fit()
717 {
718 if (capacity() == size())
719 return false;
720 _GLIBCXX_ASAN_ANNOTATE_REINIT;
721 return std::__shrink_to_fit_aux<vector>::_S_do_it(*this);
722 }
723#endif
724
725 template<typename _Tp, typename _Alloc>
726 template<typename _InputIterator>
727 _GLIBCXX20_CONSTEXPR
728 void
729 vector<_Tp, _Alloc>::
730 _M_range_insert(iterator __pos, _InputIterator __first,
731 _InputIterator __last, std::input_iterator_tag)
732 {
733 if (__pos == end())
734 {
735 for (; __first != __last; ++__first)
736 insert(end(), *__first);
737 }
738 else if (__first != __last)
739 {
740 vector __tmp(__first, __last, _M_get_Tp_allocator());
741 insert(__pos,
742 _GLIBCXX_MAKE_MOVE_ITERATOR(__tmp.begin()),
743 _GLIBCXX_MAKE_MOVE_ITERATOR(__tmp.end()));
744 }
745 }
746
747 template<typename _Tp, typename _Alloc>
748 template<typename _ForwardIterator>
749 _GLIBCXX20_CONSTEXPR
750 void
751 vector<_Tp, _Alloc>::
752 _M_range_insert(iterator __position, _ForwardIterator __first,
753 _ForwardIterator __last, std::forward_iterator_tag)
754 {
755 if (__first != __last)
756 {
757 const size_type __n = std::distance(__first, __last);
758 if (size_type(this->_M_impl._M_end_of_storage
759 - this->_M_impl._M_finish) >= __n)
760 {
761 const size_type __elems_after = end() - __position;
762 pointer __old_finish(this->_M_impl._M_finish);
763 if (__elems_after > __n)
764 {
765 _GLIBCXX_ASAN_ANNOTATE_GROW(__n);
766 std::__uninitialized_move_a(this->_M_impl._M_finish - __n,
767 this->_M_impl._M_finish,
768 this->_M_impl._M_finish,
769 _M_get_Tp_allocator());
770 this->_M_impl._M_finish += __n;
771 _GLIBCXX_ASAN_ANNOTATE_GREW(__n);
772 _GLIBCXX_MOVE_BACKWARD3(__position.base(),
773 __old_finish - __n, __old_finish);
774 std::copy(__first, __last, __position);
775 }
776 else
777 {
778 _ForwardIterator __mid = __first;
779 std::advance(__mid, __elems_after);
780 _GLIBCXX_ASAN_ANNOTATE_GROW(__n);
781 std::__uninitialized_copy_a(__mid, __last,
782 this->_M_impl._M_finish,
783 _M_get_Tp_allocator());
784 this->_M_impl._M_finish += __n - __elems_after;
785 _GLIBCXX_ASAN_ANNOTATE_GREW(__n - __elems_after);
786 std::__uninitialized_move_a(__position.base(),
787 __old_finish,
788 this->_M_impl._M_finish,
789 _M_get_Tp_allocator());
790 this->_M_impl._M_finish += __elems_after;
791 _GLIBCXX_ASAN_ANNOTATE_GREW(__elems_after);
792 std::copy(__first, __mid, __position);
793 }
794 }
795 else
796 {
797 // Make local copies of these members because the compiler
798 // thinks the allocator can alter them if 'this' is globally
799 // reachable.
800 pointer __old_start = this->_M_impl._M_start;
801 pointer __old_finish = this->_M_impl._M_finish;
802
803 const size_type __len =
804 _M_check_len(__n, s: "vector::_M_range_insert");
805 pointer __new_start(this->_M_allocate(__len));
806 pointer __new_finish(__new_start);
807 __try
808 {
809 __new_finish
810 = std::__uninitialized_move_if_noexcept_a
811 (__old_start, __position.base(),
812 __new_start, _M_get_Tp_allocator());
813 __new_finish
814 = std::__uninitialized_copy_a(__first, __last,
815 __new_finish,
816 _M_get_Tp_allocator());
817 __new_finish
818 = std::__uninitialized_move_if_noexcept_a
819 (__position.base(), __old_finish,
820 __new_finish, _M_get_Tp_allocator());
821 }
822 __catch(...)
823 {
824 std::_Destroy(__new_start, __new_finish,
825 _M_get_Tp_allocator());
826 _M_deallocate(__new_start, __len);
827 __throw_exception_again;
828 }
829 std::_Destroy(__old_start, __old_finish,
830 _M_get_Tp_allocator());
831 _GLIBCXX_ASAN_ANNOTATE_REINIT;
832 _M_deallocate(__old_start,
833 this->_M_impl._M_end_of_storage - __old_start);
834 this->_M_impl._M_start = __new_start;
835 this->_M_impl._M_finish = __new_finish;
836 this->_M_impl._M_end_of_storage = __new_start + __len;
837 }
838 }
839 }
840
841
842 // vector<bool>
843 template<typename _Alloc>
844 _GLIBCXX20_CONSTEXPR
845 void
846 vector<bool, _Alloc>::
847 _M_reallocate(size_type __n)
848 {
849 _Bit_pointer __q = this->_M_allocate(__n);
850 iterator __start(std::__addressof(*__q), 0);
851 iterator __finish(_M_copy_aligned(first: begin(), last: end(), result: __start));
852 this->_M_deallocate();
853 this->_M_impl._M_start = __start;
854 this->_M_impl._M_finish = __finish;
855 this->_M_impl._M_end_of_storage = __q + _S_nword(__n);
856 }
857
858 template<typename _Alloc>
859 _GLIBCXX20_CONSTEXPR
860 void
861 vector<bool, _Alloc>::
862 _M_fill_insert(iterator __position, size_type __n, bool __x)
863 {
864 if (__n == 0)
865 return;
866 if (capacity() - size() >= __n)
867 {
868 std::copy_backward(__position, end(),
869 this->_M_impl._M_finish + difference_type(__n));
870 std::fill(__position, __position + difference_type(__n), __x);
871 this->_M_impl._M_finish += difference_type(__n);
872 }
873 else
874 {
875 const size_type __len =
876 _M_check_len(__n, s: "vector<bool>::_M_fill_insert");
877 _Bit_pointer __q = this->_M_allocate(__len);
878 iterator __start(std::__addressof(*__q), 0);
879 iterator __i = _M_copy_aligned(first: begin(), last: __position, result: __start);
880 std::fill(__i, __i + difference_type(__n), __x);
881 iterator __finish = std::copy(__position, end(),
882 __i + difference_type(__n));
883 this->_M_deallocate();
884 this->_M_impl._M_end_of_storage = __q + _S_nword(__len);
885 this->_M_impl._M_start = __start;
886 this->_M_impl._M_finish = __finish;
887 }
888 }
889
890 template<typename _Alloc>
891 template<typename _ForwardIterator>
892 _GLIBCXX20_CONSTEXPR
893 void
894 vector<bool, _Alloc>::
895 _M_insert_range(iterator __position, _ForwardIterator __first,
896 _ForwardIterator __last, std::forward_iterator_tag)
897 {
898 if (__first != __last)
899 {
900 size_type __n = std::distance(__first, __last);
901 if (capacity() - size() >= __n)
902 {
903 std::copy_backward(__position, end(),
904 this->_M_impl._M_finish
905 + difference_type(__n));
906 std::copy(__first, __last, __position);
907 this->_M_impl._M_finish += difference_type(__n);
908 }
909 else
910 {
911 const size_type __len =
912 _M_check_len(__n, s: "vector<bool>::_M_insert_range");
913 const iterator __begin = begin(), __end = end();
914 _Bit_pointer __q = this->_M_allocate(__len);
915 iterator __start(std::__addressof(*__q), 0);
916 iterator __i = _M_copy_aligned(first: __begin, last: __position, result: __start);
917 __i = std::copy(__first, __last, __i);
918 iterator __finish = std::copy(__position, __end, __i);
919 this->_M_deallocate();
920 this->_M_impl._M_end_of_storage = __q + _S_nword(__len);
921 this->_M_impl._M_start = __start;
922 this->_M_impl._M_finish = __finish;
923 }
924 }
925 }
926
927 template<typename _Alloc>
928 _GLIBCXX20_CONSTEXPR
929 void
930 vector<bool, _Alloc>::
931 _M_insert_aux(iterator __position, bool __x)
932 {
933 if (this->_M_impl._M_finish._M_p != this->_M_impl._M_end_addr())
934 {
935 std::copy_backward(__position, this->_M_impl._M_finish,
936 this->_M_impl._M_finish + 1);
937 *__position = __x;
938 ++this->_M_impl._M_finish;
939 }
940 else
941 {
942 const size_type __len =
943 _M_check_len(n: size_type(1), s: "vector<bool>::_M_insert_aux");
944 _Bit_pointer __q = this->_M_allocate(__len);
945 iterator __start(std::__addressof(*__q), 0);
946 iterator __i = _M_copy_aligned(first: begin(), last: __position, result: __start);
947 *__i++ = __x;
948 iterator __finish = std::copy(__position, end(), __i);
949 this->_M_deallocate();
950 this->_M_impl._M_end_of_storage = __q + _S_nword(__len);
951 this->_M_impl._M_start = __start;
952 this->_M_impl._M_finish = __finish;
953 }
954 }
955
956 template<typename _Alloc>
957 _GLIBCXX20_CONSTEXPR
958 typename vector<bool, _Alloc>::iterator
959 vector<bool, _Alloc>::
960 _M_erase(iterator __position)
961 {
962 if (__position + 1 != end())
963 std::copy(__position + 1, end(), __position);
964 --this->_M_impl._M_finish;
965 return __position;
966 }
967
968 template<typename _Alloc>
969 _GLIBCXX20_CONSTEXPR
970 typename vector<bool, _Alloc>::iterator
971 vector<bool, _Alloc>::
972 _M_erase(iterator __first, iterator __last)
973 {
974 if (__first != __last)
975 _M_erase_at_end(pos: std::copy(__last, end(), __first));
976 return __first;
977 }
978
979#if __cplusplus >= 201103L
980 template<typename _Alloc>
981 _GLIBCXX20_CONSTEXPR
982 bool
983 vector<bool, _Alloc>::
984 _M_shrink_to_fit()
985 {
986 if (capacity() - size() < int(_S_word_bit))
987 return false;
988 __try
989 {
990 if (size_type __n = size())
991 _M_reallocate(__n);
992 else
993 {
994 this->_M_deallocate();
995 this->_M_impl._M_reset();
996 }
997 return true;
998 }
999 __catch(...)
1000 { return false; }
1001 }
1002#endif
1003
1004_GLIBCXX_END_NAMESPACE_CONTAINER
1005_GLIBCXX_END_NAMESPACE_VERSION
1006} // namespace std
1007
1008#if __cplusplus >= 201103L
1009
1010namespace std _GLIBCXX_VISIBILITY(default)
1011{
1012_GLIBCXX_BEGIN_NAMESPACE_VERSION
1013
1014 template<typename _Alloc>
1015 size_t
1016 hash<_GLIBCXX_STD_C::vector<bool, _Alloc>>::
1017 operator()(const _GLIBCXX_STD_C::vector<bool, _Alloc>& __b) const noexcept
1018 {
1019 size_t __hash = 0;
1020 const size_t __words = __b.size() / _S_word_bit;
1021 if (__words)
1022 {
1023 const size_t __clength = __words * sizeof(_Bit_type);
1024 __hash = std::_Hash_impl::hash(__b._M_impl._M_start._M_p, __clength);
1025 }
1026
1027 const size_t __extrabits = __b.size() % _S_word_bit;
1028 if (__extrabits)
1029 {
1030 _Bit_type __hiword = *__b._M_impl._M_finish._M_p;
1031 __hiword &= ~((~static_cast<_Bit_type>(0)) << __extrabits);
1032
1033 const size_t __clength
1034 = (__extrabits + __CHAR_BIT__ - 1) / __CHAR_BIT__;
1035 if (__words)
1036 __hash = std::_Hash_impl::hash(ptr: &__hiword, __clength, seed: __hash);
1037 else
1038 __hash = std::_Hash_impl::hash(ptr: &__hiword, __clength);
1039 }
1040
1041 return __hash;
1042 }
1043
1044_GLIBCXX_END_NAMESPACE_VERSION
1045} // namespace std
1046
1047#endif // C++11
1048
1049#undef _GLIBCXX_ASAN_ANNOTATE_REINIT
1050#undef _GLIBCXX_ASAN_ANNOTATE_GROW
1051#undef _GLIBCXX_ASAN_ANNOTATE_GREW
1052#undef _GLIBCXX_ASAN_ANNOTATE_SHRINK
1053
1054#endif /* _VECTOR_TCC */
1055

source code of include/c++/13/bits/vector.tcc