libstdc++

list.tcc
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1 // List implementation (out of line) -*- C++ -*-
2
3 // Copyright (C) 2001-2013 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) 1996,1997
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/list.tcc
52 * This is an internal header file, included by other library headers.
53 * Do not attempt to use it directly. @headername{list}
54 */
55
56 #ifndef _LIST_TCC
57 #define _LIST_TCC 1
58
59 namespace std _GLIBCXX_VISIBILITY(default)
60 {
61 _GLIBCXX_BEGIN_NAMESPACE_CONTAINER
62
63 template<typename _Tp, typename _Alloc>
64 void
65 _List_base<_Tp, _Alloc>::
66 _M_clear()
67 {
68 typedef _List_node<_Tp> _Node;
69 _Node* __cur = static_cast<_Node*>(_M_impl._M_node._M_next);
70 while (__cur != &_M_impl._M_node)
71 {
72 _Node* __tmp = __cur;
73 __cur = static_cast<_Node*>(__cur->_M_next);
74 #if __cplusplus >= 201103L
75 _M_get_Node_allocator().destroy(__tmp);
76 #else
77 _M_get_Tp_allocator().destroy(std::__addressof(__tmp->_M_data));
78 #endif
79 _M_put_node(__tmp);
80 }
81 }
82
83 #if __cplusplus >= 201103L
84 template<typename _Tp, typename _Alloc>
85 template<typename... _Args>
86 typename list<_Tp, _Alloc>::iterator
87 list<_Tp, _Alloc>::
88 emplace(iterator __position, _Args&&... __args)
89 {
90 _Node* __tmp = _M_create_node(std::forward<_Args>(__args)...);
91 __tmp->_M_hook(__position._M_node);
92 return iterator(__tmp);
93 }
94 #endif
95
96 template<typename _Tp, typename _Alloc>
97 typename list<_Tp, _Alloc>::iterator
98 list<_Tp, _Alloc>::
99 insert(iterator __position, const value_type& __x)
100 {
101 _Node* __tmp = _M_create_node(__x);
102 __tmp->_M_hook(__position._M_node);
103 return iterator(__tmp);
104 }
105
106 template<typename _Tp, typename _Alloc>
107 typename list<_Tp, _Alloc>::iterator
108 list<_Tp, _Alloc>::
109 erase(iterator __position)
110 {
111 iterator __ret = iterator(__position._M_node->_M_next);
112 _M_erase(__position);
113 return __ret;
114 }
115
116 #if __cplusplus >= 201103L
117 template<typename _Tp, typename _Alloc>
118 void
119 list<_Tp, _Alloc>::
120 _M_default_append(size_type __n)
121 {
122 size_type __i = 0;
123 __try
124 {
125 for (; __i < __n; ++__i)
126 emplace_back();
127 }
128 __catch(...)
129 {
130 for (; __i; --__i)
131 pop_back();
132 __throw_exception_again;
133 }
134 }
135
136 template<typename _Tp, typename _Alloc>
137 void
138 list<_Tp, _Alloc>::
139 resize(size_type __new_size)
140 {
141 iterator __i = begin();
142 size_type __len = 0;
143 for (; __i != end() && __len < __new_size; ++__i, ++__len)
144 ;
145 if (__len == __new_size)
146 erase(__i, end());
147 else // __i == end()
148 _M_default_append(__new_size - __len);
149 }
150
151 template<typename _Tp, typename _Alloc>
152 void
153 list<_Tp, _Alloc>::
154 resize(size_type __new_size, const value_type& __x)
155 {
156 iterator __i = begin();
157 size_type __len = 0;
158 for (; __i != end() && __len < __new_size; ++__i, ++__len)
159 ;
160 if (__len == __new_size)
161 erase(__i, end());
162 else // __i == end()
163 insert(end(), __new_size - __len, __x);
164 }
165 #else
166 template<typename _Tp, typename _Alloc>
167 void
168 list<_Tp, _Alloc>::
169 resize(size_type __new_size, value_type __x)
170 {
171 iterator __i = begin();
172 size_type __len = 0;
173 for (; __i != end() && __len < __new_size; ++__i, ++__len)
174 ;
175 if (__len == __new_size)
176 erase(__i, end());
177 else // __i == end()
178 insert(end(), __new_size - __len, __x);
179 }
180 #endif
181
182 template<typename _Tp, typename _Alloc>
183 list<_Tp, _Alloc>&
184 list<_Tp, _Alloc>::
185 operator=(const list& __x)
186 {
187 if (this != &__x)
188 {
189 iterator __first1 = begin();
190 iterator __last1 = end();
191 const_iterator __first2 = __x.begin();
192 const_iterator __last2 = __x.end();
193 for (; __first1 != __last1 && __first2 != __last2;
194 ++__first1, ++__first2)
195 *__first1 = *__first2;
196 if (__first2 == __last2)
197 erase(__first1, __last1);
198 else
199 insert(__last1, __first2, __last2);
200 }
201 return *this;
202 }
203
204 template<typename _Tp, typename _Alloc>
205 void
206 list<_Tp, _Alloc>::
207 _M_fill_assign(size_type __n, const value_type& __val)
208 {
209 iterator __i = begin();
210 for (; __i != end() && __n > 0; ++__i, --__n)
211 *__i = __val;
212 if (__n > 0)
213 insert(end(), __n, __val);
214 else
215 erase(__i, end());
216 }
217
218 template<typename _Tp, typename _Alloc>
219 template <typename _InputIterator>
220 void
221 list<_Tp, _Alloc>::
222 _M_assign_dispatch(_InputIterator __first2, _InputIterator __last2,
223 __false_type)
224 {
225 iterator __first1 = begin();
226 iterator __last1 = end();
227 for (; __first1 != __last1 && __first2 != __last2;
228 ++__first1, ++__first2)
229 *__first1 = *__first2;
230 if (__first2 == __last2)
231 erase(__first1, __last1);
232 else
233 insert(__last1, __first2, __last2);
234 }
235
236 template<typename _Tp, typename _Alloc>
237 void
238 list<_Tp, _Alloc>::
239 remove(const value_type& __value)
240 {
241 iterator __first = begin();
242 iterator __last = end();
243 iterator __extra = __last;
244 while (__first != __last)
245 {
246 iterator __next = __first;
247 ++__next;
248 if (*__first == __value)
249 {
250 // _GLIBCXX_RESOLVE_LIB_DEFECTS
251 // 526. Is it undefined if a function in the standard changes
252 // in parameters?
253 if (std::__addressof(*__first) != std::__addressof(__value))
254 _M_erase(__first);
255 else
256 __extra = __first;
257 }
258 __first = __next;
259 }
260 if (__extra != __last)
261 _M_erase(__extra);
262 }
263
264 template<typename _Tp, typename _Alloc>
265 void
266 list<_Tp, _Alloc>::
267 unique()
268 {
269 iterator __first = begin();
270 iterator __last = end();
271 if (__first == __last)
272 return;
273 iterator __next = __first;
274 while (++__next != __last)
275 {
276 if (*__first == *__next)
277 _M_erase(__next);
278 else
279 __first = __next;
280 __next = __first;
281 }
282 }
283
284 template<typename _Tp, typename _Alloc>
285 void
286 list<_Tp, _Alloc>::
287 #if __cplusplus >= 201103L
288 merge(list&& __x)
289 #else
290 merge(list& __x)
291 #endif
292 {
293 // _GLIBCXX_RESOLVE_LIB_DEFECTS
294 // 300. list::merge() specification incomplete
295 if (this != &__x)
296 {
297 _M_check_equal_allocators(__x);
298
299 iterator __first1 = begin();
300 iterator __last1 = end();
301 iterator __first2 = __x.begin();
302 iterator __last2 = __x.end();
303 while (__first1 != __last1 && __first2 != __last2)
304 if (*__first2 < *__first1)
305 {
306 iterator __next = __first2;
307 _M_transfer(__first1, __first2, ++__next);
308 __first2 = __next;
309 }
310 else
311 ++__first1;
312 if (__first2 != __last2)
313 _M_transfer(__last1, __first2, __last2);
314 }
315 }
316
317 template<typename _Tp, typename _Alloc>
318 template <typename _StrictWeakOrdering>
319 void
320 list<_Tp, _Alloc>::
321 #if __cplusplus >= 201103L
322 merge(list&& __x, _StrictWeakOrdering __comp)
323 #else
324 merge(list& __x, _StrictWeakOrdering __comp)
325 #endif
326 {
327 // _GLIBCXX_RESOLVE_LIB_DEFECTS
328 // 300. list::merge() specification incomplete
329 if (this != &__x)
330 {
331 _M_check_equal_allocators(__x);
332
333 iterator __first1 = begin();
334 iterator __last1 = end();
335 iterator __first2 = __x.begin();
336 iterator __last2 = __x.end();
337 while (__first1 != __last1 && __first2 != __last2)
338 if (__comp(*__first2, *__first1))
339 {
340 iterator __next = __first2;
341 _M_transfer(__first1, __first2, ++__next);
342 __first2 = __next;
343 }
344 else
345 ++__first1;
346 if (__first2 != __last2)
347 _M_transfer(__last1, __first2, __last2);
348 }
349 }
350
351 template<typename _Tp, typename _Alloc>
352 void
353 list<_Tp, _Alloc>::
354 sort()
355 {
356 // Do nothing if the list has length 0 or 1.
357 if (this->_M_impl._M_node._M_next != &this->_M_impl._M_node
358 && this->_M_impl._M_node._M_next->_M_next != &this->_M_impl._M_node)
359 {
360 list __carry;
361 list __tmp[64];
362 list * __fill = &__tmp[0];
363 list * __counter;
364
365 do
366 {
367 __carry.splice(__carry.begin(), *this, begin());
368
369 for(__counter = &__tmp[0];
370 __counter != __fill && !__counter->empty();
371 ++__counter)
372 {
373 __counter->merge(__carry);
374 __carry.swap(*__counter);
375 }
376 __carry.swap(*__counter);
377 if (__counter == __fill)
378 ++__fill;
379 }
380 while ( !empty() );
381
382 for (__counter = &__tmp[1]; __counter != __fill; ++__counter)
383 __counter->merge(*(__counter - 1));
384 swap( *(__fill - 1) );
385 }
386 }
387
388 template<typename _Tp, typename _Alloc>
389 template <typename _Predicate>
390 void
391 list<_Tp, _Alloc>::
392 remove_if(_Predicate __pred)
393 {
394 iterator __first = begin();
395 iterator __last = end();
396 while (__first != __last)
397 {
398 iterator __next = __first;
399 ++__next;
400 if (__pred(*__first))
401 _M_erase(__first);
402 __first = __next;
403 }
404 }
405
406 template<typename _Tp, typename _Alloc>
407 template <typename _BinaryPredicate>
408 void
409 list<_Tp, _Alloc>::
410 unique(_BinaryPredicate __binary_pred)
411 {
412 iterator __first = begin();
413 iterator __last = end();
414 if (__first == __last)
415 return;
416 iterator __next = __first;
417 while (++__next != __last)
418 {
419 if (__binary_pred(*__first, *__next))
420 _M_erase(__next);
421 else
422 __first = __next;
423 __next = __first;
424 }
425 }
426
427 template<typename _Tp, typename _Alloc>
428 template <typename _StrictWeakOrdering>
429 void
430 list<_Tp, _Alloc>::
431 sort(_StrictWeakOrdering __comp)
432 {
433 // Do nothing if the list has length 0 or 1.
434 if (this->_M_impl._M_node._M_next != &this->_M_impl._M_node
435 && this->_M_impl._M_node._M_next->_M_next != &this->_M_impl._M_node)
436 {
437 list __carry;
438 list __tmp[64];
439 list * __fill = &__tmp[0];
440 list * __counter;
441
442 do
443 {
444 __carry.splice(__carry.begin(), *this, begin());
445
446 for(__counter = &__tmp[0];
447 __counter != __fill && !__counter->empty();
448 ++__counter)
449 {
450 __counter->merge(__carry, __comp);
451 __carry.swap(*__counter);
452 }
453 __carry.swap(*__counter);
454 if (__counter == __fill)
455 ++__fill;
456 }
457 while ( !empty() );
458
459 for (__counter = &__tmp[1]; __counter != __fill; ++__counter)
460 __counter->merge(*(__counter - 1), __comp);
461 swap(*(__fill - 1));
462 }
463 }
464
465 _GLIBCXX_END_NAMESPACE_CONTAINER
466 } // namespace std
467
468 #endif /* _LIST_TCC */
469