1 | // Vector implementation -*- C++ -*- |
2 | |
3 | // Copyright (C) 2001-2016 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/stl_vector.h |
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 _STL_VECTOR_H |
57 | #define _STL_VECTOR_H 1 |
58 | |
59 | #include <bits/stl_iterator_base_funcs.h> |
60 | #include <bits/functexcept.h> |
61 | #include <bits/concept_check.h> |
62 | #if __cplusplus >= 201103L |
63 | #include <initializer_list> |
64 | #endif |
65 | |
66 | namespace std _GLIBCXX_VISIBILITY(default) |
67 | { |
68 | _GLIBCXX_BEGIN_NAMESPACE_CONTAINER |
69 | |
70 | /// See bits/stl_deque.h's _Deque_base for an explanation. |
71 | template<typename _Tp, typename _Alloc> |
72 | struct _Vector_base |
73 | { |
74 | typedef typename __gnu_cxx::__alloc_traits<_Alloc>::template |
75 | rebind<_Tp>::other _Tp_alloc_type; |
76 | typedef typename __gnu_cxx::__alloc_traits<_Tp_alloc_type>::pointer |
77 | pointer; |
78 | |
79 | struct _Vector_impl |
80 | : public _Tp_alloc_type |
81 | { |
82 | pointer _M_start; |
83 | pointer _M_finish; |
84 | pointer _M_end_of_storage; |
85 | |
86 | _Vector_impl() |
87 | : _Tp_alloc_type(), _M_start(), _M_finish(), _M_end_of_storage() |
88 | { } |
89 | |
90 | _Vector_impl(_Tp_alloc_type const& __a) _GLIBCXX_NOEXCEPT |
91 | : _Tp_alloc_type(__a), _M_start(), _M_finish(), _M_end_of_storage() |
92 | { } |
93 | |
94 | #if __cplusplus >= 201103L |
95 | _Vector_impl(_Tp_alloc_type&& __a) noexcept |
96 | : _Tp_alloc_type(std::move(__a)), |
97 | _M_start(), _M_finish(), _M_end_of_storage() |
98 | { } |
99 | #endif |
100 | |
101 | void _M_swap_data(_Vector_impl& __x) _GLIBCXX_NOEXCEPT |
102 | { |
103 | std::swap(_M_start, __x._M_start); |
104 | std::swap(_M_finish, __x._M_finish); |
105 | std::swap(_M_end_of_storage, __x._M_end_of_storage); |
106 | } |
107 | }; |
108 | |
109 | public: |
110 | typedef _Alloc allocator_type; |
111 | |
112 | _Tp_alloc_type& |
113 | _M_get_Tp_allocator() _GLIBCXX_NOEXCEPT |
114 | { return *static_cast<_Tp_alloc_type*>(&this->_M_impl); } |
115 | |
116 | const _Tp_alloc_type& |
117 | _M_get_Tp_allocator() const _GLIBCXX_NOEXCEPT |
118 | { return *static_cast<const _Tp_alloc_type*>(&this->_M_impl); } |
119 | |
120 | allocator_type |
121 | get_allocator() const _GLIBCXX_NOEXCEPT |
122 | { return allocator_type(_M_get_Tp_allocator()); } |
123 | |
124 | _Vector_base() |
125 | : _M_impl() { } |
126 | |
127 | _Vector_base(const allocator_type& __a) _GLIBCXX_NOEXCEPT |
128 | : _M_impl(__a) { } |
129 | |
130 | _Vector_base(size_t __n) |
131 | : _M_impl() |
132 | { _M_create_storage(__n); } |
133 | |
134 | _Vector_base(size_t __n, const allocator_type& __a) |
135 | : _M_impl(__a) |
136 | { _M_create_storage(__n); } |
137 | |
138 | #if __cplusplus >= 201103L |
139 | _Vector_base(_Tp_alloc_type&& __a) noexcept |
140 | : _M_impl(std::move(__a)) { } |
141 | |
142 | _Vector_base(_Vector_base&& __x) noexcept |
143 | : _M_impl(std::move(__x._M_get_Tp_allocator())) |
144 | { this->_M_impl._M_swap_data(__x._M_impl); } |
145 | |
146 | _Vector_base(_Vector_base&& __x, const allocator_type& __a) |
147 | : _M_impl(__a) |
148 | { |
149 | if (__x.get_allocator() == __a) |
150 | this->_M_impl._M_swap_data(__x._M_impl); |
151 | else |
152 | { |
153 | size_t __n = __x._M_impl._M_finish - __x._M_impl._M_start; |
154 | _M_create_storage(__n); |
155 | } |
156 | } |
157 | #endif |
158 | |
159 | ~_Vector_base() _GLIBCXX_NOEXCEPT |
160 | { _M_deallocate(this->_M_impl._M_start, this->_M_impl._M_end_of_storage |
161 | - this->_M_impl._M_start); } |
162 | |
163 | public: |
164 | _Vector_impl _M_impl; |
165 | |
166 | pointer |
167 | _M_allocate(size_t __n) |
168 | { |
169 | typedef __gnu_cxx::__alloc_traits<_Tp_alloc_type> _Tr; |
170 | return __n != 0 ? _Tr::allocate(_M_impl, __n) : pointer(); |
171 | } |
172 | |
173 | void |
174 | _M_deallocate(pointer __p, size_t __n) |
175 | { |
176 | typedef __gnu_cxx::__alloc_traits<_Tp_alloc_type> _Tr; |
177 | if (__p) |
178 | _Tr::deallocate(_M_impl, __p, __n); |
179 | } |
180 | |
181 | private: |
182 | void |
183 | _M_create_storage(size_t __n) |
184 | { |
185 | this->_M_impl._M_start = this->_M_allocate(__n); |
186 | this->_M_impl._M_finish = this->_M_impl._M_start; |
187 | this->_M_impl._M_end_of_storage = this->_M_impl._M_start + __n; |
188 | } |
189 | }; |
190 | |
191 | |
192 | /** |
193 | * @brief A standard container which offers fixed time access to |
194 | * individual elements in any order. |
195 | * |
196 | * @ingroup sequences |
197 | * |
198 | * @tparam _Tp Type of element. |
199 | * @tparam _Alloc Allocator type, defaults to allocator<_Tp>. |
200 | * |
201 | * Meets the requirements of a <a href="tables.html#65">container</a>, a |
202 | * <a href="tables.html#66">reversible container</a>, and a |
203 | * <a href="tables.html#67">sequence</a>, including the |
204 | * <a href="tables.html#68">optional sequence requirements</a> with the |
205 | * %exception of @c push_front and @c pop_front. |
206 | * |
207 | * In some terminology a %vector can be described as a dynamic |
208 | * C-style array, it offers fast and efficient access to individual |
209 | * elements in any order and saves the user from worrying about |
210 | * memory and size allocation. Subscripting ( @c [] ) access is |
211 | * also provided as with C-style arrays. |
212 | */ |
213 | template<typename _Tp, typename _Alloc = std::allocator<_Tp> > |
214 | class vector : protected _Vector_base<_Tp, _Alloc> |
215 | { |
216 | // Concept requirements. |
217 | typedef typename _Alloc::value_type _Alloc_value_type; |
218 | #if __cplusplus < 201103L |
219 | __glibcxx_class_requires(_Tp, _SGIAssignableConcept) |
220 | #endif |
221 | __glibcxx_class_requires2(_Tp, _Alloc_value_type, _SameTypeConcept) |
222 | |
223 | typedef _Vector_base<_Tp, _Alloc> _Base; |
224 | typedef typename _Base::_Tp_alloc_type _Tp_alloc_type; |
225 | typedef __gnu_cxx::__alloc_traits<_Tp_alloc_type> _Alloc_traits; |
226 | |
227 | public: |
228 | typedef _Tp value_type; |
229 | typedef typename _Base::pointer pointer; |
230 | typedef typename _Alloc_traits::const_pointer const_pointer; |
231 | typedef typename _Alloc_traits::reference reference; |
232 | typedef typename _Alloc_traits::const_reference const_reference; |
233 | typedef __gnu_cxx::__normal_iterator<pointer, vector> iterator; |
234 | typedef __gnu_cxx::__normal_iterator<const_pointer, vector> |
235 | const_iterator; |
236 | typedef std::reverse_iterator<const_iterator> const_reverse_iterator; |
237 | typedef std::reverse_iterator<iterator> reverse_iterator; |
238 | typedef size_t size_type; |
239 | typedef ptrdiff_t difference_type; |
240 | typedef _Alloc allocator_type; |
241 | |
242 | protected: |
243 | using _Base::_M_allocate; |
244 | using _Base::_M_deallocate; |
245 | using _Base::_M_impl; |
246 | using _Base::_M_get_Tp_allocator; |
247 | |
248 | public: |
249 | // [23.2.4.1] construct/copy/destroy |
250 | // (assign() and get_allocator() are also listed in this section) |
251 | |
252 | /** |
253 | * @brief Creates a %vector with no elements. |
254 | */ |
255 | vector() |
256 | #if __cplusplus >= 201103L |
257 | noexcept(is_nothrow_default_constructible<_Alloc>::value) |
258 | #endif |
259 | : _Base() { } |
260 | |
261 | /** |
262 | * @brief Creates a %vector with no elements. |
263 | * @param __a An allocator object. |
264 | */ |
265 | explicit |
266 | vector(const allocator_type& __a) _GLIBCXX_NOEXCEPT |
267 | : _Base(__a) { } |
268 | |
269 | #if __cplusplus >= 201103L |
270 | /** |
271 | * @brief Creates a %vector with default constructed elements. |
272 | * @param __n The number of elements to initially create. |
273 | * @param __a An allocator. |
274 | * |
275 | * This constructor fills the %vector with @a __n default |
276 | * constructed elements. |
277 | */ |
278 | explicit |
279 | vector(size_type __n, const allocator_type& __a = allocator_type()) |
280 | : _Base(__n, __a) |
281 | { _M_default_initialize(__n); } |
282 | |
283 | /** |
284 | * @brief Creates a %vector with copies of an exemplar element. |
285 | * @param __n The number of elements to initially create. |
286 | * @param __value An element to copy. |
287 | * @param __a An allocator. |
288 | * |
289 | * This constructor fills the %vector with @a __n copies of @a __value. |
290 | */ |
291 | vector(size_type __n, const value_type& __value, |
292 | const allocator_type& __a = allocator_type()) |
293 | : _Base(__n, __a) |
294 | { _M_fill_initialize(__n, __value); } |
295 | #else |
296 | /** |
297 | * @brief Creates a %vector with copies of an exemplar element. |
298 | * @param __n The number of elements to initially create. |
299 | * @param __value An element to copy. |
300 | * @param __a An allocator. |
301 | * |
302 | * This constructor fills the %vector with @a __n copies of @a __value. |
303 | */ |
304 | explicit |
305 | vector(size_type __n, const value_type& __value = value_type(), |
306 | const allocator_type& __a = allocator_type()) |
307 | : _Base(__n, __a) |
308 | { _M_fill_initialize(__n, __value); } |
309 | #endif |
310 | |
311 | /** |
312 | * @brief %Vector copy constructor. |
313 | * @param __x A %vector of identical element and allocator types. |
314 | * |
315 | * The newly-created %vector uses a copy of the allocation |
316 | * object used by @a __x. All the elements of @a __x are copied, |
317 | * but any extra memory in |
318 | * @a __x (for fast expansion) will not be copied. |
319 | */ |
320 | vector(const vector& __x) |
321 | : _Base(__x.size(), |
322 | _Alloc_traits::_S_select_on_copy(__x._M_get_Tp_allocator())) |
323 | { this->_M_impl._M_finish = |
324 | std::__uninitialized_copy_a(__x.begin(), __x.end(), |
325 | this->_M_impl._M_start, |
326 | _M_get_Tp_allocator()); |
327 | } |
328 | |
329 | #if __cplusplus >= 201103L |
330 | /** |
331 | * @brief %Vector move constructor. |
332 | * @param __x A %vector of identical element and allocator types. |
333 | * |
334 | * The newly-created %vector contains the exact contents of @a __x. |
335 | * The contents of @a __x are a valid, but unspecified %vector. |
336 | */ |
337 | vector(vector&& __x) noexcept |
338 | : _Base(std::move(__x)) { } |
339 | |
340 | /// Copy constructor with alternative allocator |
341 | vector(const vector& __x, const allocator_type& __a) |
342 | : _Base(__x.size(), __a) |
343 | { this->_M_impl._M_finish = |
344 | std::__uninitialized_copy_a(__x.begin(), __x.end(), |
345 | this->_M_impl._M_start, |
346 | _M_get_Tp_allocator()); |
347 | } |
348 | |
349 | /// Move constructor with alternative allocator |
350 | vector(vector&& __rv, const allocator_type& __m) |
351 | noexcept(_Alloc_traits::_S_always_equal()) |
352 | : _Base(std::move(__rv), __m) |
353 | { |
354 | if (__rv.get_allocator() != __m) |
355 | { |
356 | this->_M_impl._M_finish = |
357 | std::__uninitialized_move_a(__rv.begin(), __rv.end(), |
358 | this->_M_impl._M_start, |
359 | _M_get_Tp_allocator()); |
360 | __rv.clear(); |
361 | } |
362 | } |
363 | |
364 | /** |
365 | * @brief Builds a %vector from an initializer list. |
366 | * @param __l An initializer_list. |
367 | * @param __a An allocator. |
368 | * |
369 | * Create a %vector consisting of copies of the elements in the |
370 | * initializer_list @a __l. |
371 | * |
372 | * This will call the element type's copy constructor N times |
373 | * (where N is @a __l.size()) and do no memory reallocation. |
374 | */ |
375 | vector(initializer_list<value_type> __l, |
376 | const allocator_type& __a = allocator_type()) |
377 | : _Base(__a) |
378 | { |
379 | _M_range_initialize(__l.begin(), __l.end(), |
380 | random_access_iterator_tag()); |
381 | } |
382 | #endif |
383 | |
384 | /** |
385 | * @brief Builds a %vector from a range. |
386 | * @param __first An input iterator. |
387 | * @param __last An input iterator. |
388 | * @param __a An allocator. |
389 | * |
390 | * Create a %vector consisting of copies of the elements from |
391 | * [first,last). |
392 | * |
393 | * If the iterators are forward, bidirectional, or |
394 | * random-access, then this will call the elements' copy |
395 | * constructor N times (where N is distance(first,last)) and do |
396 | * no memory reallocation. But if only input iterators are |
397 | * used, then this will do at most 2N calls to the copy |
398 | * constructor, and logN memory reallocations. |
399 | */ |
400 | #if __cplusplus >= 201103L |
401 | template<typename _InputIterator, |
402 | typename = std::_RequireInputIter<_InputIterator>> |
403 | vector(_InputIterator __first, _InputIterator __last, |
404 | const allocator_type& __a = allocator_type()) |
405 | : _Base(__a) |
406 | { _M_initialize_dispatch(__first, __last, __false_type()); } |
407 | #else |
408 | template<typename _InputIterator> |
409 | vector(_InputIterator __first, _InputIterator __last, |
410 | const allocator_type& __a = allocator_type()) |
411 | : _Base(__a) |
412 | { |
413 | // Check whether it's an integral type. If so, it's not an iterator. |
414 | typedef typename std::__is_integer<_InputIterator>::__type _Integral; |
415 | _M_initialize_dispatch(__first, __last, _Integral()); |
416 | } |
417 | #endif |
418 | |
419 | /** |
420 | * The dtor only erases the elements, and note that if the |
421 | * elements themselves are pointers, the pointed-to memory is |
422 | * not touched in any way. Managing the pointer is the user's |
423 | * responsibility. |
424 | */ |
425 | ~vector() _GLIBCXX_NOEXCEPT |
426 | { std::_Destroy(this->_M_impl._M_start, this->_M_impl._M_finish, |
427 | _M_get_Tp_allocator()); } |
428 | |
429 | /** |
430 | * @brief %Vector assignment operator. |
431 | * @param __x A %vector of identical element and allocator types. |
432 | * |
433 | * All the elements of @a __x are copied, but any extra memory in |
434 | * @a __x (for fast expansion) will not be copied. Unlike the |
435 | * copy constructor, the allocator object is not copied. |
436 | */ |
437 | vector& |
438 | operator=(const vector& __x); |
439 | |
440 | #if __cplusplus >= 201103L |
441 | /** |
442 | * @brief %Vector move assignment operator. |
443 | * @param __x A %vector of identical element and allocator types. |
444 | * |
445 | * The contents of @a __x are moved into this %vector (without copying, |
446 | * if the allocators permit it). |
447 | * @a __x is a valid, but unspecified %vector. |
448 | */ |
449 | vector& |
450 | operator=(vector&& __x) noexcept(_Alloc_traits::_S_nothrow_move()) |
451 | { |
452 | constexpr bool __move_storage = |
453 | _Alloc_traits::_S_propagate_on_move_assign() |
454 | || _Alloc_traits::_S_always_equal(); |
455 | _M_move_assign(std::move(__x), __bool_constant<__move_storage>()); |
456 | return *this; |
457 | } |
458 | |
459 | /** |
460 | * @brief %Vector list assignment operator. |
461 | * @param __l An initializer_list. |
462 | * |
463 | * This function fills a %vector with copies of the elements in the |
464 | * initializer list @a __l. |
465 | * |
466 | * Note that the assignment completely changes the %vector and |
467 | * that the resulting %vector's size is the same as the number |
468 | * of elements assigned. Old data may be lost. |
469 | */ |
470 | vector& |
471 | operator=(initializer_list<value_type> __l) |
472 | { |
473 | this->assign(__l.begin(), __l.end()); |
474 | return *this; |
475 | } |
476 | #endif |
477 | |
478 | /** |
479 | * @brief Assigns a given value to a %vector. |
480 | * @param __n Number of elements to be assigned. |
481 | * @param __val Value to be assigned. |
482 | * |
483 | * This function fills a %vector with @a __n copies of the given |
484 | * value. Note that the assignment completely changes the |
485 | * %vector and that the resulting %vector's size is the same as |
486 | * the number of elements assigned. Old data may be lost. |
487 | */ |
488 | void |
489 | assign(size_type __n, const value_type& __val) |
490 | { _M_fill_assign(__n, __val); } |
491 | |
492 | /** |
493 | * @brief Assigns a range to a %vector. |
494 | * @param __first An input iterator. |
495 | * @param __last An input iterator. |
496 | * |
497 | * This function fills a %vector with copies of the elements in the |
498 | * range [__first,__last). |
499 | * |
500 | * Note that the assignment completely changes the %vector and |
501 | * that the resulting %vector's size is the same as the number |
502 | * of elements assigned. Old data may be lost. |
503 | */ |
504 | #if __cplusplus >= 201103L |
505 | template<typename _InputIterator, |
506 | typename = std::_RequireInputIter<_InputIterator>> |
507 | void |
508 | assign(_InputIterator __first, _InputIterator __last) |
509 | { _M_assign_dispatch(__first, __last, __false_type()); } |
510 | #else |
511 | template<typename _InputIterator> |
512 | void |
513 | assign(_InputIterator __first, _InputIterator __last) |
514 | { |
515 | // Check whether it's an integral type. If so, it's not an iterator. |
516 | typedef typename std::__is_integer<_InputIterator>::__type _Integral; |
517 | _M_assign_dispatch(__first, __last, _Integral()); |
518 | } |
519 | #endif |
520 | |
521 | #if __cplusplus >= 201103L |
522 | /** |
523 | * @brief Assigns an initializer list to a %vector. |
524 | * @param __l An initializer_list. |
525 | * |
526 | * This function fills a %vector with copies of the elements in the |
527 | * initializer list @a __l. |
528 | * |
529 | * Note that the assignment completely changes the %vector and |
530 | * that the resulting %vector's size is the same as the number |
531 | * of elements assigned. Old data may be lost. |
532 | */ |
533 | void |
534 | assign(initializer_list<value_type> __l) |
535 | { this->assign(__l.begin(), __l.end()); } |
536 | #endif |
537 | |
538 | /// Get a copy of the memory allocation object. |
539 | using _Base::get_allocator; |
540 | |
541 | // iterators |
542 | /** |
543 | * Returns a read/write iterator that points to the first |
544 | * element in the %vector. Iteration is done in ordinary |
545 | * element order. |
546 | */ |
547 | iterator |
548 | begin() _GLIBCXX_NOEXCEPT |
549 | { return iterator(this->_M_impl._M_start); } |
550 | |
551 | /** |
552 | * Returns a read-only (constant) iterator that points to the |
553 | * first element in the %vector. Iteration is done in ordinary |
554 | * element order. |
555 | */ |
556 | const_iterator |
557 | begin() const _GLIBCXX_NOEXCEPT |
558 | { return const_iterator(this->_M_impl._M_start); } |
559 | |
560 | /** |
561 | * Returns a read/write iterator that points one past the last |
562 | * element in the %vector. Iteration is done in ordinary |
563 | * element order. |
564 | */ |
565 | iterator |
566 | end() _GLIBCXX_NOEXCEPT |
567 | { return iterator(this->_M_impl._M_finish); } |
568 | |
569 | /** |
570 | * Returns a read-only (constant) iterator that points one past |
571 | * the last element in the %vector. Iteration is done in |
572 | * ordinary element order. |
573 | */ |
574 | const_iterator |
575 | end() const _GLIBCXX_NOEXCEPT |
576 | { return const_iterator(this->_M_impl._M_finish); } |
577 | |
578 | /** |
579 | * Returns a read/write reverse iterator that points to the |
580 | * last element in the %vector. Iteration is done in reverse |
581 | * element order. |
582 | */ |
583 | reverse_iterator |
584 | rbegin() _GLIBCXX_NOEXCEPT |
585 | { return reverse_iterator(end()); } |
586 | |
587 | /** |
588 | * Returns a read-only (constant) reverse iterator that points |
589 | * to the last element in the %vector. Iteration is done in |
590 | * reverse element order. |
591 | */ |
592 | const_reverse_iterator |
593 | rbegin() const _GLIBCXX_NOEXCEPT |
594 | { return const_reverse_iterator(end()); } |
595 | |
596 | /** |
597 | * Returns a read/write reverse iterator that points to one |
598 | * before the first element in the %vector. Iteration is done |
599 | * in reverse element order. |
600 | */ |
601 | reverse_iterator |
602 | rend() _GLIBCXX_NOEXCEPT |
603 | { return reverse_iterator(begin()); } |
604 | |
605 | /** |
606 | * Returns a read-only (constant) reverse iterator that points |
607 | * to one before the first element in the %vector. Iteration |
608 | * is done in reverse element order. |
609 | */ |
610 | const_reverse_iterator |
611 | rend() const _GLIBCXX_NOEXCEPT |
612 | { return const_reverse_iterator(begin()); } |
613 | |
614 | #if __cplusplus >= 201103L |
615 | /** |
616 | * Returns a read-only (constant) iterator that points to the |
617 | * first element in the %vector. Iteration is done in ordinary |
618 | * element order. |
619 | */ |
620 | const_iterator |
621 | cbegin() const noexcept |
622 | { return const_iterator(this->_M_impl._M_start); } |
623 | |
624 | /** |
625 | * Returns a read-only (constant) iterator that points one past |
626 | * the last element in the %vector. Iteration is done in |
627 | * ordinary element order. |
628 | */ |
629 | const_iterator |
630 | cend() const noexcept |
631 | { return const_iterator(this->_M_impl._M_finish); } |
632 | |
633 | /** |
634 | * Returns a read-only (constant) reverse iterator that points |
635 | * to the last element in the %vector. Iteration is done in |
636 | * reverse element order. |
637 | */ |
638 | const_reverse_iterator |
639 | crbegin() const noexcept |
640 | { return const_reverse_iterator(end()); } |
641 | |
642 | /** |
643 | * Returns a read-only (constant) reverse iterator that points |
644 | * to one before the first element in the %vector. Iteration |
645 | * is done in reverse element order. |
646 | */ |
647 | const_reverse_iterator |
648 | crend() const noexcept |
649 | { return const_reverse_iterator(begin()); } |
650 | #endif |
651 | |
652 | // [23.2.4.2] capacity |
653 | /** Returns the number of elements in the %vector. */ |
654 | size_type |
655 | size() const _GLIBCXX_NOEXCEPT |
656 | { return size_type(this->_M_impl._M_finish - this->_M_impl._M_start); } |
657 | |
658 | /** Returns the size() of the largest possible %vector. */ |
659 | size_type |
660 | max_size() const _GLIBCXX_NOEXCEPT |
661 | { return _Alloc_traits::max_size(_M_get_Tp_allocator()); } |
662 | |
663 | #if __cplusplus >= 201103L |
664 | /** |
665 | * @brief Resizes the %vector to the specified number of elements. |
666 | * @param __new_size Number of elements the %vector should contain. |
667 | * |
668 | * This function will %resize the %vector to the specified |
669 | * number of elements. If the number is smaller than the |
670 | * %vector's current size the %vector is truncated, otherwise |
671 | * default constructed elements are appended. |
672 | */ |
673 | void |
674 | resize(size_type __new_size) |
675 | { |
676 | if (__new_size > size()) |
677 | _M_default_append(__new_size - size()); |
678 | else if (__new_size < size()) |
679 | _M_erase_at_end(this->_M_impl._M_start + __new_size); |
680 | } |
681 | |
682 | /** |
683 | * @brief Resizes the %vector to the specified number of elements. |
684 | * @param __new_size Number of elements the %vector should contain. |
685 | * @param __x Data with which new elements should be populated. |
686 | * |
687 | * This function will %resize the %vector to the specified |
688 | * number of elements. If the number is smaller than the |
689 | * %vector's current size the %vector is truncated, otherwise |
690 | * the %vector is extended and new elements are populated with |
691 | * given data. |
692 | */ |
693 | void |
694 | resize(size_type __new_size, const value_type& __x) |
695 | { |
696 | if (__new_size > size()) |
697 | insert(end(), __new_size - size(), __x); |
698 | else if (__new_size < size()) |
699 | _M_erase_at_end(this->_M_impl._M_start + __new_size); |
700 | } |
701 | #else |
702 | /** |
703 | * @brief Resizes the %vector to the specified number of elements. |
704 | * @param __new_size Number of elements the %vector should contain. |
705 | * @param __x Data with which new elements should be populated. |
706 | * |
707 | * This function will %resize the %vector to the specified |
708 | * number of elements. If the number is smaller than the |
709 | * %vector's current size the %vector is truncated, otherwise |
710 | * the %vector is extended and new elements are populated with |
711 | * given data. |
712 | */ |
713 | void |
714 | resize(size_type __new_size, value_type __x = value_type()) |
715 | { |
716 | if (__new_size > size()) |
717 | insert(end(), __new_size - size(), __x); |
718 | else if (__new_size < size()) |
719 | _M_erase_at_end(this->_M_impl._M_start + __new_size); |
720 | } |
721 | #endif |
722 | |
723 | #if __cplusplus >= 201103L |
724 | /** A non-binding request to reduce capacity() to size(). */ |
725 | void |
726 | shrink_to_fit() |
727 | { _M_shrink_to_fit(); } |
728 | #endif |
729 | |
730 | /** |
731 | * Returns the total number of elements that the %vector can |
732 | * hold before needing to allocate more memory. |
733 | */ |
734 | size_type |
735 | capacity() const _GLIBCXX_NOEXCEPT |
736 | { return size_type(this->_M_impl._M_end_of_storage |
737 | - this->_M_impl._M_start); } |
738 | |
739 | /** |
740 | * Returns true if the %vector is empty. (Thus begin() would |
741 | * equal end().) |
742 | */ |
743 | bool |
744 | empty() const _GLIBCXX_NOEXCEPT |
745 | { return begin() == end(); } |
746 | |
747 | /** |
748 | * @brief Attempt to preallocate enough memory for specified number of |
749 | * elements. |
750 | * @param __n Number of elements required. |
751 | * @throw std::length_error If @a n exceeds @c max_size(). |
752 | * |
753 | * This function attempts to reserve enough memory for the |
754 | * %vector to hold the specified number of elements. If the |
755 | * number requested is more than max_size(), length_error is |
756 | * thrown. |
757 | * |
758 | * The advantage of this function is that if optimal code is a |
759 | * necessity and the user can determine the number of elements |
760 | * that will be required, the user can reserve the memory in |
761 | * %advance, and thus prevent a possible reallocation of memory |
762 | * and copying of %vector data. |
763 | */ |
764 | void |
765 | reserve(size_type __n); |
766 | |
767 | // element access |
768 | /** |
769 | * @brief Subscript access to the data contained in the %vector. |
770 | * @param __n The index of the element for which data should be |
771 | * accessed. |
772 | * @return Read/write reference to data. |
773 | * |
774 | * This operator allows for easy, array-style, data access. |
775 | * Note that data access with this operator is unchecked and |
776 | * out_of_range lookups are not defined. (For checked lookups |
777 | * see at().) |
778 | */ |
779 | reference |
780 | operator[](size_type __n) _GLIBCXX_NOEXCEPT |
781 | { return *(this->_M_impl._M_start + __n); } |
782 | |
783 | /** |
784 | * @brief Subscript access to the data contained in the %vector. |
785 | * @param __n The index of the element for which data should be |
786 | * accessed. |
787 | * @return Read-only (constant) reference to data. |
788 | * |
789 | * This operator allows for easy, array-style, data access. |
790 | * Note that data access with this operator is unchecked and |
791 | * out_of_range lookups are not defined. (For checked lookups |
792 | * see at().) |
793 | */ |
794 | const_reference |
795 | operator[](size_type __n) const _GLIBCXX_NOEXCEPT |
796 | { return *(this->_M_impl._M_start + __n); } |
797 | |
798 | protected: |
799 | /// Safety check used only from at(). |
800 | void |
801 | _M_range_check(size_type __n) const |
802 | { |
803 | if (__n >= this->size()) |
804 | __throw_out_of_range_fmt(__N("vector::_M_range_check: __n " |
805 | "(which is %zu) >= this->size() " |
806 | "(which is %zu)" ), |
807 | __n, this->size()); |
808 | } |
809 | |
810 | public: |
811 | /** |
812 | * @brief Provides access to the data contained in the %vector. |
813 | * @param __n The index of the element for which data should be |
814 | * accessed. |
815 | * @return Read/write reference to data. |
816 | * @throw std::out_of_range If @a __n is an invalid index. |
817 | * |
818 | * This function provides for safer data access. The parameter |
819 | * is first checked that it is in the range of the vector. The |
820 | * function throws out_of_range if the check fails. |
821 | */ |
822 | reference |
823 | at(size_type __n) |
824 | { |
825 | _M_range_check(__n); |
826 | return (*this)[__n]; |
827 | } |
828 | |
829 | /** |
830 | * @brief Provides access to the data contained in the %vector. |
831 | * @param __n The index of the element for which data should be |
832 | * accessed. |
833 | * @return Read-only (constant) reference to data. |
834 | * @throw std::out_of_range If @a __n is an invalid index. |
835 | * |
836 | * This function provides for safer data access. The parameter |
837 | * is first checked that it is in the range of the vector. The |
838 | * function throws out_of_range if the check fails. |
839 | */ |
840 | const_reference |
841 | at(size_type __n) const |
842 | { |
843 | _M_range_check(__n); |
844 | return (*this)[__n]; |
845 | } |
846 | |
847 | /** |
848 | * Returns a read/write reference to the data at the first |
849 | * element of the %vector. |
850 | */ |
851 | reference |
852 | front() _GLIBCXX_NOEXCEPT |
853 | { return *begin(); } |
854 | |
855 | /** |
856 | * Returns a read-only (constant) reference to the data at the first |
857 | * element of the %vector. |
858 | */ |
859 | const_reference |
860 | front() const _GLIBCXX_NOEXCEPT |
861 | { return *begin(); } |
862 | |
863 | /** |
864 | * Returns a read/write reference to the data at the last |
865 | * element of the %vector. |
866 | */ |
867 | reference |
868 | back() _GLIBCXX_NOEXCEPT |
869 | { return *(end() - 1); } |
870 | |
871 | /** |
872 | * Returns a read-only (constant) reference to the data at the |
873 | * last element of the %vector. |
874 | */ |
875 | const_reference |
876 | back() const _GLIBCXX_NOEXCEPT |
877 | { return *(end() - 1); } |
878 | |
879 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
880 | // DR 464. Suggestion for new member functions in standard containers. |
881 | // data access |
882 | /** |
883 | * Returns a pointer such that [data(), data() + size()) is a valid |
884 | * range. For a non-empty %vector, data() == &front(). |
885 | */ |
886 | #if __cplusplus >= 201103L |
887 | _Tp* |
888 | #else |
889 | pointer |
890 | #endif |
891 | data() _GLIBCXX_NOEXCEPT |
892 | { return _M_data_ptr(this->_M_impl._M_start); } |
893 | |
894 | #if __cplusplus >= 201103L |
895 | const _Tp* |
896 | #else |
897 | const_pointer |
898 | #endif |
899 | data() const _GLIBCXX_NOEXCEPT |
900 | { return _M_data_ptr(this->_M_impl._M_start); } |
901 | |
902 | // [23.2.4.3] modifiers |
903 | /** |
904 | * @brief Add data to the end of the %vector. |
905 | * @param __x Data to be added. |
906 | * |
907 | * This is a typical stack operation. The function creates an |
908 | * element at the end of the %vector and assigns the given data |
909 | * to it. Due to the nature of a %vector this operation can be |
910 | * done in constant time if the %vector has preallocated space |
911 | * available. |
912 | */ |
913 | void |
914 | push_back(const value_type& __x) |
915 | { |
916 | if (this->_M_impl._M_finish != this->_M_impl._M_end_of_storage) |
917 | { |
918 | _Alloc_traits::construct(this->_M_impl, this->_M_impl._M_finish, |
919 | __x); |
920 | ++this->_M_impl._M_finish; |
921 | } |
922 | else |
923 | #if __cplusplus >= 201103L |
924 | _M_emplace_back_aux(__x); |
925 | #else |
926 | _M_insert_aux(end(), __x); |
927 | #endif |
928 | } |
929 | |
930 | #if __cplusplus >= 201103L |
931 | void |
932 | push_back(value_type&& __x) |
933 | { emplace_back(std::move(__x)); } |
934 | |
935 | template<typename... _Args> |
936 | void |
937 | emplace_back(_Args&&... __args); |
938 | #endif |
939 | |
940 | /** |
941 | * @brief Removes last element. |
942 | * |
943 | * This is a typical stack operation. It shrinks the %vector by one. |
944 | * |
945 | * Note that no data is returned, and if the last element's |
946 | * data is needed, it should be retrieved before pop_back() is |
947 | * called. |
948 | */ |
949 | void |
950 | pop_back() _GLIBCXX_NOEXCEPT |
951 | { |
952 | --this->_M_impl._M_finish; |
953 | _Alloc_traits::destroy(this->_M_impl, this->_M_impl._M_finish); |
954 | } |
955 | |
956 | #if __cplusplus >= 201103L |
957 | /** |
958 | * @brief Inserts an object in %vector before specified iterator. |
959 | * @param __position A const_iterator into the %vector. |
960 | * @param __args Arguments. |
961 | * @return An iterator that points to the inserted data. |
962 | * |
963 | * This function will insert an object of type T constructed |
964 | * with T(std::forward<Args>(args)...) before the specified location. |
965 | * Note that this kind of operation could be expensive for a %vector |
966 | * and if it is frequently used the user should consider using |
967 | * std::list. |
968 | */ |
969 | template<typename... _Args> |
970 | iterator |
971 | emplace(const_iterator __position, _Args&&... __args); |
972 | |
973 | /** |
974 | * @brief Inserts given value into %vector before specified iterator. |
975 | * @param __position A const_iterator into the %vector. |
976 | * @param __x Data to be inserted. |
977 | * @return An iterator that points to the inserted data. |
978 | * |
979 | * This function will insert a copy of the given value before |
980 | * the specified location. Note that this kind of operation |
981 | * could be expensive for a %vector and if it is frequently |
982 | * used the user should consider using std::list. |
983 | */ |
984 | iterator |
985 | insert(const_iterator __position, const value_type& __x); |
986 | #else |
987 | /** |
988 | * @brief Inserts given value into %vector before specified iterator. |
989 | * @param __position An iterator into the %vector. |
990 | * @param __x Data to be inserted. |
991 | * @return An iterator that points to the inserted data. |
992 | * |
993 | * This function will insert a copy of the given value before |
994 | * the specified location. Note that this kind of operation |
995 | * could be expensive for a %vector and if it is frequently |
996 | * used the user should consider using std::list. |
997 | */ |
998 | iterator |
999 | insert(iterator __position, const value_type& __x); |
1000 | #endif |
1001 | |
1002 | #if __cplusplus >= 201103L |
1003 | /** |
1004 | * @brief Inserts given rvalue into %vector before specified iterator. |
1005 | * @param __position A const_iterator into the %vector. |
1006 | * @param __x Data to be inserted. |
1007 | * @return An iterator that points to the inserted data. |
1008 | * |
1009 | * This function will insert a copy of the given rvalue before |
1010 | * the specified location. Note that this kind of operation |
1011 | * could be expensive for a %vector and if it is frequently |
1012 | * used the user should consider using std::list. |
1013 | */ |
1014 | iterator |
1015 | insert(const_iterator __position, value_type&& __x) |
1016 | { return emplace(__position, std::move(__x)); } |
1017 | |
1018 | /** |
1019 | * @brief Inserts an initializer_list into the %vector. |
1020 | * @param __position An iterator into the %vector. |
1021 | * @param __l An initializer_list. |
1022 | * |
1023 | * This function will insert copies of the data in the |
1024 | * initializer_list @a l into the %vector before the location |
1025 | * specified by @a position. |
1026 | * |
1027 | * Note that this kind of operation could be expensive for a |
1028 | * %vector and if it is frequently used the user should |
1029 | * consider using std::list. |
1030 | */ |
1031 | iterator |
1032 | insert(const_iterator __position, initializer_list<value_type> __l) |
1033 | { return this->insert(__position, __l.begin(), __l.end()); } |
1034 | #endif |
1035 | |
1036 | #if __cplusplus >= 201103L |
1037 | /** |
1038 | * @brief Inserts a number of copies of given data into the %vector. |
1039 | * @param __position A const_iterator into the %vector. |
1040 | * @param __n Number of elements to be inserted. |
1041 | * @param __x Data to be inserted. |
1042 | * @return An iterator that points to the inserted data. |
1043 | * |
1044 | * This function will insert a specified number of copies of |
1045 | * the given data before the location specified by @a position. |
1046 | * |
1047 | * Note that this kind of operation could be expensive for a |
1048 | * %vector and if it is frequently used the user should |
1049 | * consider using std::list. |
1050 | */ |
1051 | iterator |
1052 | insert(const_iterator __position, size_type __n, const value_type& __x) |
1053 | { |
1054 | difference_type __offset = __position - cbegin(); |
1055 | _M_fill_insert(begin() + __offset, __n, __x); |
1056 | return begin() + __offset; |
1057 | } |
1058 | #else |
1059 | /** |
1060 | * @brief Inserts a number of copies of given data into the %vector. |
1061 | * @param __position An iterator into the %vector. |
1062 | * @param __n Number of elements to be inserted. |
1063 | * @param __x Data to be inserted. |
1064 | * |
1065 | * This function will insert a specified number of copies of |
1066 | * the given data before the location specified by @a position. |
1067 | * |
1068 | * Note that this kind of operation could be expensive for a |
1069 | * %vector and if it is frequently used the user should |
1070 | * consider using std::list. |
1071 | */ |
1072 | void |
1073 | insert(iterator __position, size_type __n, const value_type& __x) |
1074 | { _M_fill_insert(__position, __n, __x); } |
1075 | #endif |
1076 | |
1077 | #if __cplusplus >= 201103L |
1078 | /** |
1079 | * @brief Inserts a range into the %vector. |
1080 | * @param __position A const_iterator into the %vector. |
1081 | * @param __first An input iterator. |
1082 | * @param __last An input iterator. |
1083 | * @return An iterator that points to the inserted data. |
1084 | * |
1085 | * This function will insert copies of the data in the range |
1086 | * [__first,__last) into the %vector before the location specified |
1087 | * by @a pos. |
1088 | * |
1089 | * Note that this kind of operation could be expensive for a |
1090 | * %vector and if it is frequently used the user should |
1091 | * consider using std::list. |
1092 | */ |
1093 | template<typename _InputIterator, |
1094 | typename = std::_RequireInputIter<_InputIterator>> |
1095 | iterator |
1096 | insert(const_iterator __position, _InputIterator __first, |
1097 | _InputIterator __last) |
1098 | { |
1099 | difference_type __offset = __position - cbegin(); |
1100 | _M_insert_dispatch(begin() + __offset, |
1101 | __first, __last, __false_type()); |
1102 | return begin() + __offset; |
1103 | } |
1104 | #else |
1105 | /** |
1106 | * @brief Inserts a range into the %vector. |
1107 | * @param __position An iterator into the %vector. |
1108 | * @param __first An input iterator. |
1109 | * @param __last An input iterator. |
1110 | * |
1111 | * This function will insert copies of the data in the range |
1112 | * [__first,__last) into the %vector before the location specified |
1113 | * by @a pos. |
1114 | * |
1115 | * Note that this kind of operation could be expensive for a |
1116 | * %vector and if it is frequently used the user should |
1117 | * consider using std::list. |
1118 | */ |
1119 | template<typename _InputIterator> |
1120 | void |
1121 | insert(iterator __position, _InputIterator __first, |
1122 | _InputIterator __last) |
1123 | { |
1124 | // Check whether it's an integral type. If so, it's not an iterator. |
1125 | typedef typename std::__is_integer<_InputIterator>::__type _Integral; |
1126 | _M_insert_dispatch(__position, __first, __last, _Integral()); |
1127 | } |
1128 | #endif |
1129 | |
1130 | /** |
1131 | * @brief Remove element at given position. |
1132 | * @param __position Iterator pointing to element to be erased. |
1133 | * @return An iterator pointing to the next element (or end()). |
1134 | * |
1135 | * This function will erase the element at the given position and thus |
1136 | * shorten the %vector by one. |
1137 | * |
1138 | * Note This operation could be expensive and if it is |
1139 | * frequently used the user should consider using std::list. |
1140 | * The user is also cautioned that this function only erases |
1141 | * the element, and that if the element is itself a pointer, |
1142 | * the pointed-to memory is not touched in any way. Managing |
1143 | * the pointer is the user's responsibility. |
1144 | */ |
1145 | iterator |
1146 | #if __cplusplus >= 201103L |
1147 | erase(const_iterator __position) |
1148 | { return _M_erase(begin() + (__position - cbegin())); } |
1149 | #else |
1150 | erase(iterator __position) |
1151 | { return _M_erase(__position); } |
1152 | #endif |
1153 | |
1154 | /** |
1155 | * @brief Remove a range of elements. |
1156 | * @param __first Iterator pointing to the first element to be erased. |
1157 | * @param __last Iterator pointing to one past the last element to be |
1158 | * erased. |
1159 | * @return An iterator pointing to the element pointed to by @a __last |
1160 | * prior to erasing (or end()). |
1161 | * |
1162 | * This function will erase the elements in the range |
1163 | * [__first,__last) and shorten the %vector accordingly. |
1164 | * |
1165 | * Note This operation could be expensive and if it is |
1166 | * frequently used the user should consider using std::list. |
1167 | * The user is also cautioned that this function only erases |
1168 | * the elements, and that if the elements themselves are |
1169 | * pointers, the pointed-to memory is not touched in any way. |
1170 | * Managing the pointer is the user's responsibility. |
1171 | */ |
1172 | iterator |
1173 | #if __cplusplus >= 201103L |
1174 | erase(const_iterator __first, const_iterator __last) |
1175 | { |
1176 | const auto __beg = begin(); |
1177 | const auto __cbeg = cbegin(); |
1178 | return _M_erase(__beg + (__first - __cbeg), __beg + (__last - __cbeg)); |
1179 | } |
1180 | #else |
1181 | erase(iterator __first, iterator __last) |
1182 | { return _M_erase(__first, __last); } |
1183 | #endif |
1184 | |
1185 | /** |
1186 | * @brief Swaps data with another %vector. |
1187 | * @param __x A %vector of the same element and allocator types. |
1188 | * |
1189 | * This exchanges the elements between two vectors in constant time. |
1190 | * (Three pointers, so it should be quite fast.) |
1191 | * Note that the global std::swap() function is specialized such that |
1192 | * std::swap(v1,v2) will feed to this function. |
1193 | */ |
1194 | void |
1195 | swap(vector& __x) _GLIBCXX_NOEXCEPT |
1196 | { |
1197 | this->_M_impl._M_swap_data(__x._M_impl); |
1198 | _Alloc_traits::_S_on_swap(_M_get_Tp_allocator(), |
1199 | __x._M_get_Tp_allocator()); |
1200 | } |
1201 | |
1202 | /** |
1203 | * Erases all the elements. Note that this function only erases the |
1204 | * elements, and that if the elements themselves are pointers, the |
1205 | * pointed-to memory is not touched in any way. Managing the pointer is |
1206 | * the user's responsibility. |
1207 | */ |
1208 | void |
1209 | clear() _GLIBCXX_NOEXCEPT |
1210 | { _M_erase_at_end(this->_M_impl._M_start); } |
1211 | |
1212 | protected: |
1213 | /** |
1214 | * Memory expansion handler. Uses the member allocation function to |
1215 | * obtain @a n bytes of memory, and then copies [first,last) into it. |
1216 | */ |
1217 | template<typename _ForwardIterator> |
1218 | pointer |
1219 | _M_allocate_and_copy(size_type __n, |
1220 | _ForwardIterator __first, _ForwardIterator __last) |
1221 | { |
1222 | pointer __result = this->_M_allocate(__n); |
1223 | __try |
1224 | { |
1225 | std::__uninitialized_copy_a(__first, __last, __result, |
1226 | _M_get_Tp_allocator()); |
1227 | return __result; |
1228 | } |
1229 | __catch(...) |
1230 | { |
1231 | _M_deallocate(__result, __n); |
1232 | __throw_exception_again; |
1233 | } |
1234 | } |
1235 | |
1236 | |
1237 | // Internal constructor functions follow. |
1238 | |
1239 | // Called by the range constructor to implement [23.1.1]/9 |
1240 | |
1241 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
1242 | // 438. Ambiguity in the "do the right thing" clause |
1243 | template<typename _Integer> |
1244 | void |
1245 | _M_initialize_dispatch(_Integer __n, _Integer __value, __true_type) |
1246 | { |
1247 | this->_M_impl._M_start = _M_allocate(static_cast<size_type>(__n)); |
1248 | this->_M_impl._M_end_of_storage = |
1249 | this->_M_impl._M_start + static_cast<size_type>(__n); |
1250 | _M_fill_initialize(static_cast<size_type>(__n), __value); |
1251 | } |
1252 | |
1253 | // Called by the range constructor to implement [23.1.1]/9 |
1254 | template<typename _InputIterator> |
1255 | void |
1256 | _M_initialize_dispatch(_InputIterator __first, _InputIterator __last, |
1257 | __false_type) |
1258 | { |
1259 | typedef typename std::iterator_traits<_InputIterator>:: |
1260 | iterator_category _IterCategory; |
1261 | _M_range_initialize(__first, __last, _IterCategory()); |
1262 | } |
1263 | |
1264 | // Called by the second initialize_dispatch above |
1265 | template<typename _InputIterator> |
1266 | void |
1267 | _M_range_initialize(_InputIterator __first, |
1268 | _InputIterator __last, std::input_iterator_tag) |
1269 | { |
1270 | for (; __first != __last; ++__first) |
1271 | #if __cplusplus >= 201103L |
1272 | emplace_back(*__first); |
1273 | #else |
1274 | push_back(*__first); |
1275 | #endif |
1276 | } |
1277 | |
1278 | // Called by the second initialize_dispatch above |
1279 | template<typename _ForwardIterator> |
1280 | void |
1281 | _M_range_initialize(_ForwardIterator __first, |
1282 | _ForwardIterator __last, std::forward_iterator_tag) |
1283 | { |
1284 | const size_type __n = std::distance(__first, __last); |
1285 | this->_M_impl._M_start = this->_M_allocate(__n); |
1286 | this->_M_impl._M_end_of_storage = this->_M_impl._M_start + __n; |
1287 | this->_M_impl._M_finish = |
1288 | std::__uninitialized_copy_a(__first, __last, |
1289 | this->_M_impl._M_start, |
1290 | _M_get_Tp_allocator()); |
1291 | } |
1292 | |
1293 | // Called by the first initialize_dispatch above and by the |
1294 | // vector(n,value,a) constructor. |
1295 | void |
1296 | _M_fill_initialize(size_type __n, const value_type& __value) |
1297 | { |
1298 | this->_M_impl._M_finish = |
1299 | std::__uninitialized_fill_n_a(this->_M_impl._M_start, __n, __value, |
1300 | _M_get_Tp_allocator()); |
1301 | } |
1302 | |
1303 | #if __cplusplus >= 201103L |
1304 | // Called by the vector(n) constructor. |
1305 | void |
1306 | _M_default_initialize(size_type __n) |
1307 | { |
1308 | this->_M_impl._M_finish = |
1309 | std::__uninitialized_default_n_a(this->_M_impl._M_start, __n, |
1310 | _M_get_Tp_allocator()); |
1311 | } |
1312 | #endif |
1313 | |
1314 | // Internal assign functions follow. The *_aux functions do the actual |
1315 | // assignment work for the range versions. |
1316 | |
1317 | // Called by the range assign to implement [23.1.1]/9 |
1318 | |
1319 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
1320 | // 438. Ambiguity in the "do the right thing" clause |
1321 | template<typename _Integer> |
1322 | void |
1323 | _M_assign_dispatch(_Integer __n, _Integer __val, __true_type) |
1324 | { _M_fill_assign(__n, __val); } |
1325 | |
1326 | // Called by the range assign to implement [23.1.1]/9 |
1327 | template<typename _InputIterator> |
1328 | void |
1329 | _M_assign_dispatch(_InputIterator __first, _InputIterator __last, |
1330 | __false_type) |
1331 | { |
1332 | typedef typename std::iterator_traits<_InputIterator>:: |
1333 | iterator_category _IterCategory; |
1334 | _M_assign_aux(__first, __last, _IterCategory()); |
1335 | } |
1336 | |
1337 | // Called by the second assign_dispatch above |
1338 | template<typename _InputIterator> |
1339 | void |
1340 | _M_assign_aux(_InputIterator __first, _InputIterator __last, |
1341 | std::input_iterator_tag); |
1342 | |
1343 | // Called by the second assign_dispatch above |
1344 | template<typename _ForwardIterator> |
1345 | void |
1346 | _M_assign_aux(_ForwardIterator __first, _ForwardIterator __last, |
1347 | std::forward_iterator_tag); |
1348 | |
1349 | // Called by assign(n,t), and the range assign when it turns out |
1350 | // to be the same thing. |
1351 | void |
1352 | _M_fill_assign(size_type __n, const value_type& __val); |
1353 | |
1354 | |
1355 | // Internal insert functions follow. |
1356 | |
1357 | // Called by the range insert to implement [23.1.1]/9 |
1358 | |
1359 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
1360 | // 438. Ambiguity in the "do the right thing" clause |
1361 | template<typename _Integer> |
1362 | void |
1363 | _M_insert_dispatch(iterator __pos, _Integer __n, _Integer __val, |
1364 | __true_type) |
1365 | { _M_fill_insert(__pos, __n, __val); } |
1366 | |
1367 | // Called by the range insert to implement [23.1.1]/9 |
1368 | template<typename _InputIterator> |
1369 | void |
1370 | _M_insert_dispatch(iterator __pos, _InputIterator __first, |
1371 | _InputIterator __last, __false_type) |
1372 | { |
1373 | typedef typename std::iterator_traits<_InputIterator>:: |
1374 | iterator_category _IterCategory; |
1375 | _M_range_insert(__pos, __first, __last, _IterCategory()); |
1376 | } |
1377 | |
1378 | // Called by the second insert_dispatch above |
1379 | template<typename _InputIterator> |
1380 | void |
1381 | _M_range_insert(iterator __pos, _InputIterator __first, |
1382 | _InputIterator __last, std::input_iterator_tag); |
1383 | |
1384 | // Called by the second insert_dispatch above |
1385 | template<typename _ForwardIterator> |
1386 | void |
1387 | _M_range_insert(iterator __pos, _ForwardIterator __first, |
1388 | _ForwardIterator __last, std::forward_iterator_tag); |
1389 | |
1390 | // Called by insert(p,n,x), and the range insert when it turns out to be |
1391 | // the same thing. |
1392 | void |
1393 | _M_fill_insert(iterator __pos, size_type __n, const value_type& __x); |
1394 | |
1395 | #if __cplusplus >= 201103L |
1396 | // Called by resize(n). |
1397 | void |
1398 | _M_default_append(size_type __n); |
1399 | |
1400 | bool |
1401 | _M_shrink_to_fit(); |
1402 | #endif |
1403 | |
1404 | // Called by insert(p,x) |
1405 | #if __cplusplus < 201103L |
1406 | void |
1407 | _M_insert_aux(iterator __position, const value_type& __x); |
1408 | #else |
1409 | template<typename... _Args> |
1410 | void |
1411 | _M_insert_aux(iterator __position, _Args&&... __args); |
1412 | |
1413 | template<typename... _Args> |
1414 | void |
1415 | _M_emplace_back_aux(_Args&&... __args); |
1416 | #endif |
1417 | |
1418 | // Called by the latter. |
1419 | size_type |
1420 | _M_check_len(size_type __n, const char* __s) const |
1421 | { |
1422 | if (max_size() - size() < __n) |
1423 | __throw_length_error(__N(__s)); |
1424 | |
1425 | const size_type __len = size() + std::max(size(), __n); |
1426 | return (__len < size() || __len > max_size()) ? max_size() : __len; |
1427 | } |
1428 | |
1429 | // Internal erase functions follow. |
1430 | |
1431 | // Called by erase(q1,q2), clear(), resize(), _M_fill_assign, |
1432 | // _M_assign_aux. |
1433 | void |
1434 | _M_erase_at_end(pointer __pos) _GLIBCXX_NOEXCEPT |
1435 | { |
1436 | std::_Destroy(__pos, this->_M_impl._M_finish, _M_get_Tp_allocator()); |
1437 | this->_M_impl._M_finish = __pos; |
1438 | } |
1439 | |
1440 | iterator |
1441 | _M_erase(iterator __position); |
1442 | |
1443 | iterator |
1444 | _M_erase(iterator __first, iterator __last); |
1445 | |
1446 | #if __cplusplus >= 201103L |
1447 | private: |
1448 | // Constant-time move assignment when source object's memory can be |
1449 | // moved, either because the source's allocator will move too |
1450 | // or because the allocators are equal. |
1451 | void |
1452 | _M_move_assign(vector&& __x, std::true_type) noexcept |
1453 | { |
1454 | vector __tmp(get_allocator()); |
1455 | this->_M_impl._M_swap_data(__tmp._M_impl); |
1456 | this->_M_impl._M_swap_data(__x._M_impl); |
1457 | std::__alloc_on_move(_M_get_Tp_allocator(), __x._M_get_Tp_allocator()); |
1458 | } |
1459 | |
1460 | // Do move assignment when it might not be possible to move source |
1461 | // object's memory, resulting in a linear-time operation. |
1462 | void |
1463 | _M_move_assign(vector&& __x, std::false_type) |
1464 | { |
1465 | if (__x._M_get_Tp_allocator() == this->_M_get_Tp_allocator()) |
1466 | _M_move_assign(std::move(__x), std::true_type()); |
1467 | else |
1468 | { |
1469 | // The rvalue's allocator cannot be moved and is not equal, |
1470 | // so we need to individually move each element. |
1471 | this->assign(std::__make_move_if_noexcept_iterator(__x.begin()), |
1472 | std::__make_move_if_noexcept_iterator(__x.end())); |
1473 | __x.clear(); |
1474 | } |
1475 | } |
1476 | #endif |
1477 | |
1478 | #if __cplusplus >= 201103L |
1479 | template<typename _Up> |
1480 | _Up* |
1481 | _M_data_ptr(_Up* __ptr) const |
1482 | { return __ptr; } |
1483 | |
1484 | template<typename _Ptr> |
1485 | typename std::pointer_traits<_Ptr>::element_type* |
1486 | _M_data_ptr(_Ptr __ptr) const |
1487 | { return empty() ? nullptr : std::__addressof(*__ptr); } |
1488 | #else |
1489 | template<typename _Ptr> |
1490 | _Ptr |
1491 | _M_data_ptr(_Ptr __ptr) const |
1492 | { return __ptr; } |
1493 | #endif |
1494 | }; |
1495 | |
1496 | |
1497 | /** |
1498 | * @brief Vector equality comparison. |
1499 | * @param __x A %vector. |
1500 | * @param __y A %vector of the same type as @a __x. |
1501 | * @return True iff the size and elements of the vectors are equal. |
1502 | * |
1503 | * This is an equivalence relation. It is linear in the size of the |
1504 | * vectors. Vectors are considered equivalent if their sizes are equal, |
1505 | * and if corresponding elements compare equal. |
1506 | */ |
1507 | template<typename _Tp, typename _Alloc> |
1508 | inline bool |
1509 | operator==(const vector<_Tp, _Alloc>& __x, const vector<_Tp, _Alloc>& __y) |
1510 | { return (__x.size() == __y.size() |
1511 | && std::equal(__x.begin(), __x.end(), __y.begin())); } |
1512 | |
1513 | /** |
1514 | * @brief Vector ordering relation. |
1515 | * @param __x A %vector. |
1516 | * @param __y A %vector of the same type as @a __x. |
1517 | * @return True iff @a __x is lexicographically less than @a __y. |
1518 | * |
1519 | * This is a total ordering relation. It is linear in the size of the |
1520 | * vectors. The elements must be comparable with @c <. |
1521 | * |
1522 | * See std::lexicographical_compare() for how the determination is made. |
1523 | */ |
1524 | template<typename _Tp, typename _Alloc> |
1525 | inline bool |
1526 | operator<(const vector<_Tp, _Alloc>& __x, const vector<_Tp, _Alloc>& __y) |
1527 | { return std::lexicographical_compare(__x.begin(), __x.end(), |
1528 | __y.begin(), __y.end()); } |
1529 | |
1530 | /// Based on operator== |
1531 | template<typename _Tp, typename _Alloc> |
1532 | inline bool |
1533 | operator!=(const vector<_Tp, _Alloc>& __x, const vector<_Tp, _Alloc>& __y) |
1534 | { return !(__x == __y); } |
1535 | |
1536 | /// Based on operator< |
1537 | template<typename _Tp, typename _Alloc> |
1538 | inline bool |
1539 | operator>(const vector<_Tp, _Alloc>& __x, const vector<_Tp, _Alloc>& __y) |
1540 | { return __y < __x; } |
1541 | |
1542 | /// Based on operator< |
1543 | template<typename _Tp, typename _Alloc> |
1544 | inline bool |
1545 | operator<=(const vector<_Tp, _Alloc>& __x, const vector<_Tp, _Alloc>& __y) |
1546 | { return !(__y < __x); } |
1547 | |
1548 | /// Based on operator< |
1549 | template<typename _Tp, typename _Alloc> |
1550 | inline bool |
1551 | operator>=(const vector<_Tp, _Alloc>& __x, const vector<_Tp, _Alloc>& __y) |
1552 | { return !(__x < __y); } |
1553 | |
1554 | /// See std::vector::swap(). |
1555 | template<typename _Tp, typename _Alloc> |
1556 | inline void |
1557 | swap(vector<_Tp, _Alloc>& __x, vector<_Tp, _Alloc>& __y) |
1558 | _GLIBCXX_NOEXCEPT_IF(noexcept(__x.swap(__y))) |
1559 | { __x.swap(__y); } |
1560 | |
1561 | _GLIBCXX_END_NAMESPACE_CONTAINER |
1562 | } // namespace std |
1563 | |
1564 | #endif /* _STL_VECTOR_H */ |
1565 | |