5 * Hewlett-Packard Company
7 * Copyright (c) 1996,1997
8 * Silicon Graphics Computer Systems, Inc.
11 * Moscow Center for SPARC Technology
16 * This material is provided "as is", with absolutely no warranty expressed
17 * or implied. Any use is at your own risk.
19 * Permission to use or copy this software for any purpose is hereby granted
20 * without fee, provided the above notices are retained on all copies.
21 * Permission to modify the code and to distribute modified code is granted,
22 * provided the above notices are retained, and a notice that the code was
23 * modified is included with the above copyright notice.
29 #ifndef _STLP_INTERNAL_DEQUE_H
30 # include <stl/_deque.h>
35 _STLP_MOVE_TO_PRIV_NAMESPACE
37 // Non-inline member functions from _Deque_base.
39 template <class _Tp, class _Alloc >
40 _Deque_base<_Tp,_Alloc >::~_Deque_base() {
42 _M_destroy_nodes(_M_start._M_node, this->_M_finish._M_node + 1);
43 _M_map.deallocate(_M_map._M_data, _M_map_size._M_data);
47 template <class _Tp, class _Alloc >
48 void _Deque_base<_Tp,_Alloc>::_M_initialize_map(size_t __num_elements) {
49 size_t __num_nodes = __num_elements / this->buffer_size() + 1 ;
51 _M_map_size._M_data = (max)((size_t) _S_initial_map_size, __num_nodes + 2);
52 _M_map._M_data = _M_map.allocate(_M_map_size._M_data);
54 _Tp** __nstart = _M_map._M_data + (_M_map_size._M_data - __num_nodes) / 2;
55 _Tp** __nfinish = __nstart + __num_nodes;
58 _M_create_nodes(__nstart, __nfinish);
60 _STLP_UNWIND((_M_map.deallocate(_M_map._M_data, _M_map_size._M_data),
61 _M_map._M_data = 0, _M_map_size._M_data = 0))
62 _M_start._M_set_node(__nstart);
63 this->_M_finish._M_set_node(__nfinish - 1);
64 _M_start._M_cur = _M_start._M_first;
65 this->_M_finish._M_cur = this->_M_finish._M_first + __num_elements % this->buffer_size();
68 template <class _Tp, class _Alloc >
69 void _Deque_base<_Tp,_Alloc>::_M_create_nodes(_Tp** __nstart,
71 _Tp** __cur = __nstart;
73 for (; __cur < __nfinish; ++__cur)
74 *__cur = _M_map_size.allocate(this->buffer_size());
76 _STLP_UNWIND(_M_destroy_nodes(__nstart, __cur))
79 template <class _Tp, class _Alloc >
80 void _Deque_base<_Tp,_Alloc>::_M_destroy_nodes(_Tp** __nstart,
82 for (_Tp** __n = __nstart; __n < __nfinish; ++__n)
83 _M_map_size.deallocate(*__n, this->buffer_size());
86 #if defined (_STLP_USE_PTR_SPECIALIZATIONS)
87 # define deque _STLP_PTR_IMPL_NAME(deque)
88 #elif defined (_STLP_DEBUG)
89 # define deque _STLP_NON_DBG_NAME(deque)
91 _STLP_MOVE_TO_STD_NAMESPACE
94 #if defined (_STLP_NESTED_TYPE_PARAM_BUG)
95 // qualified references
96 # define __iterator__ _Deque_iterator<_Tp, _Nonconst_traits<_Tp> >
97 # define const_iterator _Deque_iterator<_Tp, _Const_traits<_Tp> >
98 # define iterator __iterator__
99 # define size_type size_t
100 # define value_type _Tp
102 # define __iterator__ _STLP_TYPENAME_ON_RETURN_TYPE deque<_Tp, _Alloc>::iterator
105 template <class _Tp, class _Alloc >
107 deque<_Tp, _Alloc >::operator= (const deque<_Tp, _Alloc >& __x) {
108 const size_type __len = size();
110 if (__len >= __x.size())
111 erase(copy(__x.begin(), __x.end(), this->_M_start), this->_M_finish);
113 const_iterator __mid = __x.begin() + difference_type(__len);
114 copy(__x.begin(), __mid, this->_M_start);
115 insert(this->_M_finish, __mid, __x.end());
121 template <class _Tp, class _Alloc >
122 void deque<_Tp, _Alloc >::_M_fill_insert(iterator __pos,
123 size_type __n, const value_type& __x) {
124 if (__pos._M_cur == this->_M_start._M_cur) {
125 iterator __new_start = _M_reserve_elements_at_front(__n);
127 uninitialized_fill(__new_start, this->_M_start, __x);
129 _STLP_UNWIND(this->_M_destroy_nodes(__new_start._M_node, this->_M_start._M_node))
130 this->_M_start = __new_start;
132 else if (__pos._M_cur == this->_M_finish._M_cur) {
133 iterator __new_finish = _M_reserve_elements_at_back(__n);
135 uninitialized_fill(this->_M_finish, __new_finish, __x);
137 _STLP_UNWIND(this->_M_destroy_nodes(this->_M_finish._M_node+1, __new_finish._M_node+1))
138 this->_M_finish = __new_finish;
141 _M_fill_insert_aux(__pos, __n, __x, _Movable());
144 #if !defined (_STLP_MEMBER_TEMPLATES)
146 template <class _Tp, class _Alloc >
147 void deque<_Tp, _Alloc>::insert(iterator __pos,
148 const value_type* __first, const value_type* __last) {
149 size_type __n = __last - __first;
150 if (__pos._M_cur == this->_M_start._M_cur) {
151 iterator __new_start = _M_reserve_elements_at_front(__n);
153 _STLP_PRIV __ucopy(__first, __last, __new_start);
155 _STLP_UNWIND(this->_M_destroy_nodes(__new_start._M_node, this->_M_start._M_node))
156 this->_M_start = __new_start;
158 else if (__pos._M_cur == this->_M_finish._M_cur) {
159 iterator __new_finish = _M_reserve_elements_at_back(__n);
161 _STLP_PRIV __ucopy(__first, __last, this->_M_finish);
163 _STLP_UNWIND(this->_M_destroy_nodes(this->_M_finish._M_node + 1,
164 __new_finish._M_node + 1))
165 this->_M_finish = __new_finish;
168 _M_insert_range_aux(__pos, __first, __last, __n, _Movable());
171 template <class _Tp, class _Alloc >
172 void deque<_Tp,_Alloc>::insert(iterator __pos,
173 const_iterator __first, const_iterator __last) {
174 size_type __n = __last - __first;
175 if (__pos._M_cur == this->_M_start._M_cur) {
176 iterator __new_start = _M_reserve_elements_at_front(__n);
178 _STLP_PRIV __ucopy(__first, __last, __new_start);
180 _STLP_UNWIND(this->_M_destroy_nodes(__new_start._M_node, this->_M_start._M_node))
181 this->_M_start = __new_start;
183 else if (__pos._M_cur == this->_M_finish._M_cur) {
184 iterator __new_finish = _M_reserve_elements_at_back(__n);
186 _STLP_PRIV __ucopy(__first, __last, this->_M_finish);
188 _STLP_UNWIND(this->_M_destroy_nodes(this->_M_finish._M_node + 1,
189 __new_finish._M_node + 1))
190 this->_M_finish = __new_finish;
193 _M_insert_range_aux(__pos, __first, __last, __n, _Movable());
196 #endif /* _STLP_MEMBER_TEMPLATES */
198 template <class _Tp, class _Alloc >
199 __iterator__ deque<_Tp,_Alloc>::_M_erase(iterator __pos,
200 const __true_type& /*_Movable*/) {
201 difference_type __index = __pos - this->_M_start;
202 if (size_type(__index) < this->size() >> 1) {
203 //We move the start of the deque one position to the right
204 //starting from the rightmost element to move.
205 iterator __src = __pos, __dst = __pos;
206 _STLP_STD::_Destroy(&(*__dst));
207 if (__src != this->_M_start) {
208 for (--__src; __dst != this->_M_start; --__src, --__dst) {
209 _STLP_STD::_Move_Construct(&(*__dst), *__src);
210 _STLP_STD::_Destroy_Moved(&(*__src));
216 iterator __src = __pos, __dst = __pos;
217 _STLP_STD::_Destroy(&(*__dst));
218 for (++__src; __src != this->_M_finish; ++__src, ++__dst) {
219 _STLP_STD::_Move_Construct(&(*__dst), *__src);
220 _STLP_STD::_Destroy_Moved(&(*__src));
222 //Duplication of the pop_back code without the destroy which has already been done:
223 if (this->_M_finish._M_cur != this->_M_finish._M_first) {
224 --this->_M_finish._M_cur;
230 return this->_M_start + __index;
233 template <class _Tp, class _Alloc >
234 __iterator__ deque<_Tp,_Alloc>::_M_erase(iterator __pos,
235 const __false_type& /*_Movable*/) {
236 iterator __next = __pos;
238 difference_type __index = __pos - this->_M_start;
239 if (size_type(__index) < this->size() >> 1) {
240 copy_backward(this->_M_start, __pos, __next);
244 copy(__next, this->_M_finish, __pos);
247 return this->_M_start + __index;
250 template <class _Tp, class _Alloc >
251 __iterator__ deque<_Tp,_Alloc>::_M_erase(iterator __first, iterator __last,
252 const __true_type& /*_Movable*/) {
253 difference_type __n = __last - __first;
254 difference_type __elems_before = __first - this->_M_start;
255 if (__elems_before <= difference_type(this->size() - __n) / 2) {
256 iterator __src = __first, __dst = __last;
257 if (__src != this->_M_start) {
258 for (--__src, --__dst; (__src >= this->_M_start) && (__dst >= __first); --__src, --__dst) {
259 _STLP_STD::_Destroy(&(*__dst));
260 _STLP_STD::_Move_Construct(&(*__dst), *__src);
262 if (__dst >= __first) {
263 //There are more elements to erase than elements to move
264 _STLP_STD::_Destroy_Range(__first, ++__dst);
265 _STLP_STD::_Destroy_Moved_Range(this->_M_start, __first);
268 //There are more elements to move than elements to erase
269 for (; __src >= this->_M_start; --__src, --__dst) {
270 _STLP_STD::_Destroy_Moved(&(*__dst));
271 _STLP_STD::_Move_Construct(&(*__dst), *__src);
273 _STLP_STD::_Destroy_Moved_Range(this->_M_start, ++__dst);
277 _STLP_STD::_Destroy_Range(this->_M_start, __last);
279 iterator __new_start = this->_M_start + __n;
280 this->_M_destroy_nodes(this->_M_start._M_node, __new_start._M_node);
281 this->_M_start = __new_start;
284 if (__last != this->_M_finish) {
285 iterator __src = __last, __dst = __first;
286 for (; (__src != this->_M_finish) && (__dst != __last); ++__src, ++__dst) {
287 _STLP_STD::_Destroy(&(*__dst));
288 _STLP_STD::_Move_Construct(&(*__dst), *__src);
290 if (__dst != __last) {
291 //There are more elements to erase than elements to move
292 _STLP_STD::_Destroy_Range(__dst, __last);
293 _STLP_STD::_Destroy_Moved_Range(__last, this->_M_finish);
296 //There are more elements to move than elements to erase
297 for (; __src != this->_M_finish; ++__src, ++__dst) {
298 _STLP_STD::_Destroy_Moved(&(*__dst));
299 _STLP_STD::_Move_Construct(&(*__dst), *__src);
301 _STLP_STD::_Destroy_Moved_Range(__dst, this->_M_finish);
305 _STLP_STD::_Destroy_Range(__first, this->_M_finish);
307 iterator __new_finish = this->_M_finish - __n;
308 this->_M_destroy_nodes(__new_finish._M_node + 1, this->_M_finish._M_node + 1);
309 this->_M_finish = __new_finish;
311 return this->_M_start + __elems_before;
314 template <class _Tp, class _Alloc >
315 __iterator__ deque<_Tp,_Alloc>::_M_erase(iterator __first, iterator __last,
316 const __false_type& /*_Movable*/) {
317 difference_type __n = __last - __first;
318 difference_type __elems_before = __first - this->_M_start;
319 if (__elems_before <= difference_type(this->size() - __n) / 2) {
320 copy_backward(this->_M_start, __first, __last);
321 iterator __new_start = this->_M_start + __n;
322 _STLP_STD::_Destroy_Range(this->_M_start, __new_start);
323 this->_M_destroy_nodes(this->_M_start._M_node, __new_start._M_node);
324 this->_M_start = __new_start;
327 copy(__last, this->_M_finish, __first);
328 iterator __new_finish = this->_M_finish - __n;
329 _STLP_STD::_Destroy_Range(__new_finish, this->_M_finish);
330 this->_M_destroy_nodes(__new_finish._M_node + 1, this->_M_finish._M_node + 1);
331 this->_M_finish = __new_finish;
333 return this->_M_start + __elems_before;
336 template <class _Tp, class _Alloc >
337 void deque<_Tp,_Alloc>::clear() {
338 for (_Map_pointer __node = this->_M_start._M_node + 1;
339 __node < this->_M_finish._M_node;
341 _STLP_STD::_Destroy_Range(*__node, *__node + this->buffer_size());
342 this->_M_map_size.deallocate(*__node, this->buffer_size());
345 if (this->_M_start._M_node != this->_M_finish._M_node) {
346 _STLP_STD::_Destroy_Range(this->_M_start._M_cur, this->_M_start._M_last);
347 _STLP_STD::_Destroy_Range(this->_M_finish._M_first, this->_M_finish._M_cur);
348 this->_M_map_size.deallocate(this->_M_finish._M_first, this->buffer_size());
351 _STLP_STD::_Destroy_Range(this->_M_start._M_cur, this->_M_finish._M_cur);
353 this->_M_finish = this->_M_start;
356 // Precondition: this->_M_start and this->_M_finish have already been initialized,
357 // but none of the deque's elements have yet been constructed.
358 template <class _Tp, class _Alloc >
359 void deque<_Tp,_Alloc>::_M_fill_initialize(const value_type& __val,
360 const __false_type& /*_TrivialInit*/) {
361 _Map_pointer __cur = this->_M_start._M_node;
363 for (; __cur < this->_M_finish._M_node; ++__cur)
364 uninitialized_fill(*__cur, *__cur + this->buffer_size(), __val);
365 uninitialized_fill(this->_M_finish._M_first, this->_M_finish._M_cur, __val);
367 _STLP_UNWIND(_STLP_STD::_Destroy_Range(this->_M_start, iterator(*__cur, __cur)))
371 // Called only if this->_M_finish._M_cur == this->_M_finish._M_last - 1.
372 template <class _Tp, class _Alloc >
373 void deque<_Tp,_Alloc>::_M_push_back_aux_v(const value_type& __t) {
374 _M_reserve_map_at_back();
375 *(this->_M_finish._M_node + 1) = this->_M_map_size.allocate(this->buffer_size());
377 _Copy_Construct(this->_M_finish._M_cur, __t);
378 this->_M_finish._M_set_node(this->_M_finish._M_node + 1);
379 this->_M_finish._M_cur = this->_M_finish._M_first;
381 _STLP_UNWIND(this->_M_map_size.deallocate(*(this->_M_finish._M_node + 1),
382 this->buffer_size()))
385 #if defined(_STLP_DONT_SUP_DFLT_PARAM) && !defined(_STLP_NO_ANACHRONISMS)
386 // Called only if this->_M_finish._M_cur == this->_M_finish._M_last - 1.
387 template <class _Tp, class _Alloc >
388 void deque<_Tp,_Alloc>::_M_push_back_aux() {
389 _M_reserve_map_at_back();
390 *(this->_M_finish._M_node + 1) = this->_M_map_size.allocate(this->buffer_size());
392 _STLP_STD::_Construct(this->_M_finish._M_cur);
393 this->_M_finish._M_set_node(this->_M_finish._M_node + 1);
394 this->_M_finish._M_cur = this->_M_finish._M_first;
396 _STLP_UNWIND(this->_M_map_size.deallocate(*(this->_M_finish._M_node + 1),
397 this->buffer_size()))
399 #endif /*_STLP_DONT_SUP_DFLT_PARAM && !_STLP_NO_ANACHRONISMS*/
401 // Called only if this->_M_start._M_cur == this->_M_start._M_first.
402 template <class _Tp, class _Alloc >
403 void deque<_Tp,_Alloc>::_M_push_front_aux_v(const value_type& __t) {
404 _M_reserve_map_at_front();
405 *(this->_M_start._M_node - 1) = this->_M_map_size.allocate(this->buffer_size());
407 this->_M_start._M_set_node(this->_M_start._M_node - 1);
408 this->_M_start._M_cur = this->_M_start._M_last - 1;
409 _Copy_Construct(this->_M_start._M_cur, __t);
411 _STLP_UNWIND((++this->_M_start,
412 this->_M_map_size.deallocate(*(this->_M_start._M_node - 1), this->buffer_size())))
416 #if defined (_STLP_DONT_SUP_DFLT_PARAM) && !defined (_STLP_NO_ANACHRONISMS)
417 // Called only if this->_M_start._M_cur == this->_M_start._M_first.
418 template <class _Tp, class _Alloc >
419 void deque<_Tp,_Alloc>::_M_push_front_aux() {
420 _M_reserve_map_at_front();
421 *(this->_M_start._M_node - 1) = this->_M_map_size.allocate(this->buffer_size());
423 this->_M_start._M_set_node(this->_M_start._M_node - 1);
424 this->_M_start._M_cur = this->_M_start._M_last - 1;
425 _STLP_STD::_Construct(this->_M_start._M_cur);
427 _STLP_UNWIND((++this->_M_start, this->_M_map_size.deallocate(*(this->_M_start._M_node - 1),
428 this->buffer_size())))
430 #endif /*_STLP_DONT_SUP_DFLT_PARAM && !_STLP_NO_ANACHRONISMS*/
432 // Called only if this->_M_finish._M_cur == this->_M_finish._M_first.
433 template <class _Tp, class _Alloc >
434 void deque<_Tp,_Alloc>::_M_pop_back_aux() {
435 this->_M_map_size.deallocate(this->_M_finish._M_first, this->buffer_size());
436 this->_M_finish._M_set_node(this->_M_finish._M_node - 1);
437 this->_M_finish._M_cur = this->_M_finish._M_last - 1;
440 // Note that if the deque has at least one element (a precondition for this member
441 // function), and if this->_M_start._M_cur == this->_M_start._M_last, then the deque
442 // must have at least two nodes.
443 template <class _Tp, class _Alloc >
444 void deque<_Tp,_Alloc>::_M_pop_front_aux() {
445 if (this->_M_start._M_cur != this->_M_start._M_last - 1)
446 ++this->_M_start._M_cur;
448 this->_M_map_size.deallocate(this->_M_start._M_first, this->buffer_size());
449 this->_M_start._M_set_node(this->_M_start._M_node + 1);
450 this->_M_start._M_cur = this->_M_start._M_first;
454 template <class _Tp, class _Alloc >
455 __iterator__ deque<_Tp,_Alloc>::_M_fill_insert_aux(iterator __pos, size_type __n,
456 const value_type& __x,
457 const __true_type& /*_Movable*/) {
458 const difference_type __elems_before = __pos - this->_M_start;
459 size_type __length = this->size();
460 value_type __x_copy = __x;
461 if (__elems_before <= difference_type(__length / 2)) {
462 iterator __new_start = _M_reserve_elements_at_front(__n);
463 __pos = this->_M_start + __elems_before;
465 iterator __dst = __new_start;
466 iterator __src = this->_M_start;
467 for (; __src != __pos; ++__dst, ++__src) {
468 _STLP_STD::_Move_Construct(&(*__dst), *__src);
469 _STLP_STD::_Destroy_Moved(&(*__src));
471 this->_M_start = __new_start;
472 uninitialized_fill(__dst, __src, __x_copy);
475 _STLP_UNWIND(this->_M_destroy_nodes(__new_start._M_node, this->_M_start._M_node))
478 iterator __new_finish = _M_reserve_elements_at_back(__n);
479 const difference_type __elems_after = difference_type(__length) - __elems_before;
480 __pos = this->_M_finish - __elems_after;
482 iterator __dst = __new_finish;
483 iterator __src = this->_M_finish;
484 for (--__src, --__dst; __src >= __pos; --__src, --__dst) {
485 _STLP_STD::_Move_Construct(&(*__dst), *__src);
486 _STLP_STD::_Destroy_Moved(&(*__src));
488 this->_M_finish = __new_finish;
489 uninitialized_fill(__pos, __pos + __n, __x_copy);
491 _STLP_UNWIND(this->_M_destroy_nodes(this->_M_finish._M_node + 1, __new_finish._M_node + 1))
496 template <class _Tp, class _Alloc >
497 __iterator__ deque<_Tp,_Alloc>::_M_fill_insert_aux(iterator __pos, size_type __n,
498 const value_type& __x,
499 const __false_type& /*_Movable*/) {
500 const difference_type __elems_before = __pos - this->_M_start;
501 size_type __length = this->size();
502 value_type __x_copy = __x;
503 if (__elems_before <= difference_type(__length / 2)) {
504 iterator __new_start = _M_reserve_elements_at_front(__n);
505 iterator __old_start = this->_M_start;
506 __pos = this->_M_start + __elems_before;
508 if (__elems_before >= difference_type(__n)) {
509 iterator __start_n = this->_M_start + difference_type(__n);
510 _STLP_PRIV __ucopy(this->_M_start, __start_n, __new_start);
511 this->_M_start = __new_start;
512 copy(__start_n, __pos, __old_start);
513 fill(__pos - difference_type(__n), __pos, __x_copy);
514 __pos -= difference_type(__n);
517 _STLP_PRIV __uninitialized_copy_fill(this->_M_start, __pos, __new_start,
518 this->_M_start, __x_copy);
519 this->_M_start = __new_start;
520 fill(__old_start, __pos, __x_copy);
523 _STLP_UNWIND(this->_M_destroy_nodes(__new_start._M_node, this->_M_start._M_node))
526 iterator __new_finish = _M_reserve_elements_at_back(__n);
527 iterator __old_finish = this->_M_finish;
528 const difference_type __elems_after =
529 difference_type(__length) - __elems_before;
530 __pos = this->_M_finish - __elems_after;
532 if (__elems_after > difference_type(__n)) {
533 iterator __finish_n = this->_M_finish - difference_type(__n);
534 _STLP_PRIV __ucopy(__finish_n, this->_M_finish, this->_M_finish);
535 this->_M_finish = __new_finish;
536 copy_backward(__pos, __finish_n, __old_finish);
537 fill(__pos, __pos + difference_type(__n), __x_copy);
540 _STLP_PRIV __uninitialized_fill_copy(this->_M_finish, __pos + difference_type(__n),
541 __x_copy, __pos, this->_M_finish);
542 this->_M_finish = __new_finish;
543 fill(__pos, __old_finish, __x_copy);
546 _STLP_UNWIND(this->_M_destroy_nodes(this->_M_finish._M_node + 1, __new_finish._M_node + 1))
551 #if !defined (_STLP_MEMBER_TEMPLATES)
552 template <class _Tp, class _Alloc >
553 void deque<_Tp,_Alloc>::_M_insert_range_aux(iterator __pos,
554 const value_type* __first, const value_type* __last,
555 size_type __n, const __true_type& /*_Movable*/) {
556 const difference_type __elems_before = __pos - this->_M_start;
557 size_type __length = size();
558 if (__elems_before <= difference_type(__length / 2)) {
559 iterator __new_start = _M_reserve_elements_at_front(__n);
560 __pos = this->_M_start + __elems_before;
562 iterator __dst = __new_start;
563 iterator __src = this->_M_start;
564 for (; __src != __pos; ++__dst, ++__src) {
565 _STLP_STD::_Move_Construct(&(*__dst), *__src);
566 _STLP_STD::_Destroy_Moved(&(*__src));
568 this->_M_start = __new_start;
569 _STLP_PRIV __ucopy(__first, __last, __dst);
571 _STLP_UNWIND(this->_M_destroy_nodes(__new_start._M_node, this->_M_start._M_node))
574 iterator __new_finish = _M_reserve_elements_at_back(__n);
575 const difference_type __elems_after = difference_type(__length) - __elems_before;
576 __pos = this->_M_finish - __elems_after;
578 iterator __dst = __new_finish;
579 iterator __src = this->_M_finish;
580 for (--__src, --__dst; __src >= __pos; --__src, --__dst) {
581 _STLP_STD::_Move_Construct(&(*__dst), *__src);
582 _STLP_STD::_Destroy_Moved(&(*__src));
584 this->_M_finish = __new_finish;
585 _STLP_PRIV __ucopy(__first, __last, __pos);
587 _STLP_UNWIND(this->_M_destroy_nodes(this->_M_finish._M_node + 1, __new_finish._M_node + 1))
591 template <class _Tp, class _Alloc >
592 void deque<_Tp,_Alloc>::_M_insert_range_aux(iterator __pos,
593 const value_type* __first, const value_type* __last,
594 size_type __n, const __false_type& /*_Movable*/) {
595 const difference_type __elems_before = __pos - this->_M_start;
596 size_type __length = size();
597 if (__elems_before <= difference_type(__length / 2)) {
598 iterator __new_start = _M_reserve_elements_at_front(__n);
599 iterator __old_start = this->_M_start;
600 __pos = this->_M_start + __elems_before;
602 if (__elems_before >= difference_type(__n)) {
603 iterator __start_n = this->_M_start + difference_type(__n);
604 _STLP_PRIV __ucopy(this->_M_start, __start_n, __new_start);
605 this->_M_start = __new_start;
606 copy(__start_n, __pos, __old_start);
607 copy(__first, __last, __pos - difference_type(__n));
610 const value_type* __mid = __first + (difference_type(__n) - __elems_before);
611 __uninitialized_copy_copy(this->_M_start, __pos, __first, __mid, __new_start);
612 this->_M_start = __new_start;
613 copy(__mid, __last, __old_start);
616 _STLP_UNWIND(this->_M_destroy_nodes(__new_start._M_node, this->_M_start._M_node))
619 iterator __new_finish = _M_reserve_elements_at_back(__n);
620 iterator __old_finish = this->_M_finish;
621 const difference_type __elems_after =
622 difference_type(__length) - __elems_before;
623 __pos = this->_M_finish - __elems_after;
626 if (__elems_after > difference_type(__n)) {
627 iterator __finish_n = this->_M_finish - difference_type(__n);
628 _STLP_PRIV __ucopy(__finish_n, this->_M_finish, this->_M_finish);
629 this->_M_finish = __new_finish;
630 copy_backward(__pos, __finish_n, __old_finish);
631 copy(__first, __last, __pos);
634 const value_type* __mid = __first + __elems_after;
635 __uninitialized_copy_copy(__mid, __last, __pos, this->_M_finish, this->_M_finish);
636 this->_M_finish = __new_finish;
637 copy(__first, __mid, __pos);
640 _STLP_UNWIND(this->_M_destroy_nodes(this->_M_finish._M_node + 1, __new_finish._M_node + 1))
644 template <class _Tp, class _Alloc >
645 void deque<_Tp,_Alloc>::_M_insert_range_aux(iterator __pos,
646 const_iterator __first, const_iterator __last,
647 size_type __n, const __true_type& /*_Movable*/) {
648 const difference_type __elems_before = __pos - this->_M_start;
649 size_type __length = size();
650 if (__elems_before <= difference_type(__length / 2)) {
651 iterator __new_start = _M_reserve_elements_at_front(__n);
652 __pos = this->_M_start + __elems_before;
654 iterator __dst = __new_start;
655 iterator __src = this->_M_start;
656 for (; __src != __pos; ++__dst, ++__src) {
657 _STLP_STD::_Move_Construct(&(*__dst), *__src);
658 _STLP_STD::_Destroy_Moved(&(*__src));
660 this->_M_start = __new_start;
661 _STLP_PRIV __ucopy(__first, __last, __dst);
663 _STLP_UNWIND(this->_M_destroy_nodes(__new_start._M_node, this->_M_start._M_node))
666 iterator __new_finish = _M_reserve_elements_at_back(__n);
667 const difference_type __elems_after = difference_type(__length) - __elems_before;
668 __pos = this->_M_finish - __elems_after;
670 iterator __dst = __new_finish;
671 iterator __src = this->_M_finish;
672 for (--__src, --__dst; __src >= __pos; --__src, --__dst) {
673 _STLP_STD::_Move_Construct(&(*__dst), *__src);
674 _STLP_STD::_Destroy_Moved(&(*__src));
676 this->_M_finish = __new_finish;
677 _STLP_PRIV __ucopy(__first, __last, __pos);
679 _STLP_UNWIND(this->_M_destroy_nodes(this->_M_finish._M_node + 1, __new_finish._M_node + 1))
683 template <class _Tp, class _Alloc >
684 void deque<_Tp,_Alloc>::_M_insert_range_aux(iterator __pos,
685 const_iterator __first, const_iterator __last,
686 size_type __n, const __false_type& /*_Movable*/) {
687 const difference_type __elems_before = __pos - this->_M_start;
688 size_type __length = size();
689 if (__elems_before < difference_type(__length / 2)) {
690 iterator __new_start = _M_reserve_elements_at_front(__n);
691 iterator __old_start = this->_M_start;
692 __pos = this->_M_start + __elems_before;
694 if (__elems_before >= difference_type(__n)) {
695 iterator __start_n = this->_M_start + __n;
696 _STLP_PRIV __ucopy(this->_M_start, __start_n, __new_start);
697 this->_M_start = __new_start;
698 copy(__start_n, __pos, __old_start);
699 copy(__first, __last, __pos - difference_type(__n));
702 const_iterator __mid = __first + (__n - __elems_before);
703 __uninitialized_copy_copy(this->_M_start, __pos, __first, __mid, __new_start);
704 this->_M_start = __new_start;
705 copy(__mid, __last, __old_start);
708 _STLP_UNWIND(this->_M_destroy_nodes(__new_start._M_node, this->_M_start._M_node))
711 iterator __new_finish = _M_reserve_elements_at_back(__n);
712 iterator __old_finish = this->_M_finish;
713 const difference_type __elems_after = __length - __elems_before;
714 __pos = this->_M_finish - __elems_after;
716 if (__elems_after > difference_type(__n)) {
717 iterator __finish_n = this->_M_finish - difference_type(__n);
718 _STLP_PRIV __ucopy(__finish_n, this->_M_finish, this->_M_finish);
719 this->_M_finish = __new_finish;
720 copy_backward(__pos, __finish_n, __old_finish);
721 copy(__first, __last, __pos);
724 const_iterator __mid = __first + __elems_after;
725 __uninitialized_copy_copy(__mid, __last, __pos, this->_M_finish, this->_M_finish);
726 this->_M_finish = __new_finish;
727 copy(__first, __mid, __pos);
730 _STLP_UNWIND(this->_M_destroy_nodes(this->_M_finish._M_node + 1, __new_finish._M_node + 1))
733 #endif /* _STLP_MEMBER_TEMPLATES */
735 template <class _Tp, class _Alloc >
736 void deque<_Tp,_Alloc>::_M_new_elements_at_front(size_type __new_elems) {
737 size_type __new_nodes
738 = (__new_elems + this->buffer_size() - 1) / this->buffer_size();
739 _M_reserve_map_at_front(__new_nodes);
742 for (; __i <= __new_nodes; ++__i)
743 *(this->_M_start._M_node - __i) = this->_M_map_size.allocate(this->buffer_size());
745 _STLP_UNWIND(for (size_type __j = 1; __j < __i; ++__j)
746 this->_M_map_size.deallocate(*(this->_M_start._M_node - __j), this->buffer_size()))
749 template <class _Tp, class _Alloc >
750 void deque<_Tp,_Alloc>::_M_new_elements_at_back(size_type __new_elems) {
751 size_type __new_nodes
752 = (__new_elems + this->buffer_size() - 1) / this->buffer_size();
753 _M_reserve_map_at_back(__new_nodes);
756 for (; __i <= __new_nodes; ++__i)
757 *(this->_M_finish._M_node + __i) = this->_M_map_size.allocate(this->buffer_size());
759 _STLP_UNWIND(for (size_type __j = 1; __j < __i; ++__j)
760 this->_M_map_size.deallocate(*(this->_M_finish._M_node + __j), this->buffer_size()))
763 template <class _Tp, class _Alloc >
764 void deque<_Tp,_Alloc>::_M_reallocate_map(size_type __nodes_to_add,
765 bool __add_at_front) {
766 size_type __old_num_nodes = this->_M_finish._M_node - this->_M_start._M_node + 1;
767 size_type __new_num_nodes = __old_num_nodes + __nodes_to_add;
769 _Map_pointer __new_nstart;
770 if (this->_M_map_size._M_data > 2 * __new_num_nodes) {
771 __new_nstart = this->_M_map._M_data + (this->_M_map_size._M_data - __new_num_nodes) / 2
772 + (__add_at_front ? __nodes_to_add : 0);
773 if (__new_nstart < this->_M_start._M_node)
774 copy(this->_M_start._M_node, this->_M_finish._M_node + 1, __new_nstart);
776 copy_backward(this->_M_start._M_node, this->_M_finish._M_node + 1,
777 __new_nstart + __old_num_nodes);
780 size_type __new_map_size =
781 this->_M_map_size._M_data + (max)((size_t)this->_M_map_size._M_data, __nodes_to_add) + 2;
783 _Map_pointer __new_map = this->_M_map.allocate(__new_map_size);
784 __new_nstart = __new_map + (__new_map_size - __new_num_nodes) / 2
785 + (__add_at_front ? __nodes_to_add : 0);
786 copy(this->_M_start._M_node, this->_M_finish._M_node + 1, __new_nstart);
787 this->_M_map.deallocate(this->_M_map._M_data, this->_M_map_size._M_data);
789 this->_M_map._M_data = __new_map;
790 this->_M_map_size._M_data = __new_map_size;
793 this->_M_start._M_set_node(__new_nstart);
794 this->_M_finish._M_set_node(__new_nstart + __old_num_nodes - 1);
799 _STLP_MOVE_TO_STD_NAMESPACE
806 #undef const_iterator
810 #endif /* _STLP_DEQUE_C */