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b8b4301e PC |
1 | // <forward_list> -*- C++ -*- |
2 | ||
8d9254fc | 3 | // Copyright (C) 2010-2020 Free Software Foundation, Inc. |
b8b4301e PC |
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 | /** @file debug/forward_list | |
26 | * This file is a GNU debug extension to the Standard C++ Library. | |
27 | */ | |
28 | ||
29 | #ifndef _GLIBCXX_DEBUG_FORWARD_LIST | |
30 | #define _GLIBCXX_DEBUG_FORWARD_LIST 1 | |
31 | ||
32 | #pragma GCC system_header | |
33 | ||
9ca2ac69 JW |
34 | #include <bits/c++config.h> |
35 | namespace std _GLIBCXX_VISIBILITY(default) { namespace __debug { | |
36 | template<typename _Tp, typename _Allocator> class forward_list; | |
37 | } } // namespace std::__debug | |
38 | ||
b8b4301e PC |
39 | #include <forward_list> |
40 | #include <debug/safe_sequence.h> | |
15ee1a77 | 41 | #include <debug/safe_container.h> |
b8b4301e PC |
42 | #include <debug/safe_iterator.h> |
43 | ||
24167c42 FD |
44 | // Special validity check for forward_list ranges. |
45 | #define __glibcxx_check_valid_fl_range(_First,_Last,_Dist) \ | |
46 | _GLIBCXX_DEBUG_VERIFY(_First._M_valid_range(_Last, _Dist, false), \ | |
47 | _M_message(__gnu_debug::__msg_valid_range) \ | |
48 | ._M_iterator(_First, #_First) \ | |
49 | ._M_iterator(_Last, #_Last)) | |
50 | ||
15ee1a77 FD |
51 | namespace __gnu_debug |
52 | { | |
53 | /// Special iterators swap and invalidation for forward_list because of the | |
54 | /// before_begin iterator. | |
55 | template<typename _SafeSequence> | |
56 | class _Safe_forward_list | |
57 | : public _Safe_sequence<_SafeSequence> | |
58 | { | |
59 | _SafeSequence& | |
60 | _M_this() noexcept | |
61 | { return *static_cast<_SafeSequence*>(this); } | |
62 | ||
63 | static void | |
64 | _M_swap_aux(_Safe_sequence_base& __lhs, | |
65 | _Safe_iterator_base*& __lhs_iterators, | |
66 | _Safe_sequence_base& __rhs, | |
67 | _Safe_iterator_base*& __rhs_iterators); | |
68 | ||
69 | void _M_swap_single(_Safe_sequence_base&) noexcept; | |
70 | ||
71 | protected: | |
72 | void | |
73 | _M_invalidate_all() | |
74 | { | |
75 | using _Base_const_iterator = __decltype(_M_this()._M_base().cend()); | |
76 | this->_M_invalidate_if([this](_Base_const_iterator __it) | |
77 | { | |
78 | return __it != _M_this()._M_base().cbefore_begin() | |
79 | && __it != _M_this()._M_base().cend(); }); | |
80 | } | |
81 | ||
82 | void _M_swap(_Safe_sequence_base&) noexcept; | |
83 | }; | |
84 | ||
85 | template<typename _SafeSequence> | |
86 | void | |
87 | _Safe_forward_list<_SafeSequence>:: | |
88 | _M_swap_aux(_Safe_sequence_base& __lhs, | |
89 | _Safe_iterator_base*& __lhs_iterators, | |
90 | _Safe_sequence_base& __rhs, | |
91 | _Safe_iterator_base*& __rhs_iterators) | |
92 | { | |
93 | using const_iterator = typename _SafeSequence::const_iterator; | |
94 | _Safe_iterator_base* __bbegin_its = 0; | |
95 | _Safe_iterator_base* __last_bbegin = 0; | |
96 | _SafeSequence& __rseq = static_cast<_SafeSequence&>(__rhs); | |
97 | ||
98 | for (_Safe_iterator_base* __iter = __lhs_iterators; __iter;) | |
99 | { | |
100 | // Even iterator is cast to const_iterator, not a problem. | |
ebd4c354 FD |
101 | _Safe_iterator_base* __victim_base = __iter; |
102 | const_iterator* __victim = | |
103 | static_cast<const_iterator*>(__victim_base); | |
15ee1a77 FD |
104 | __iter = __iter->_M_next; |
105 | if (__victim->base() == __rseq._M_base().cbefore_begin()) | |
106 | { | |
107 | __victim->_M_unlink(); | |
ebd4c354 FD |
108 | if (__lhs_iterators == __victim_base) |
109 | __lhs_iterators = __victim_base->_M_next; | |
15ee1a77 FD |
110 | if (__bbegin_its) |
111 | { | |
ebd4c354 FD |
112 | __victim_base->_M_next = __bbegin_its; |
113 | __bbegin_its->_M_prior = __victim_base; | |
15ee1a77 FD |
114 | } |
115 | else | |
ebd4c354 FD |
116 | __last_bbegin = __victim_base; |
117 | __bbegin_its = __victim_base; | |
15ee1a77 FD |
118 | } |
119 | else | |
9649e5b6 | 120 | __victim_base->_M_sequence = std::__addressof(__lhs); |
15ee1a77 FD |
121 | } |
122 | ||
123 | if (__bbegin_its) | |
124 | { | |
125 | if (__rhs_iterators) | |
126 | { | |
127 | __rhs_iterators->_M_prior = __last_bbegin; | |
128 | __last_bbegin->_M_next = __rhs_iterators; | |
129 | } | |
130 | __rhs_iterators = __bbegin_its; | |
131 | } | |
132 | } | |
133 | ||
134 | template<typename _SafeSequence> | |
135 | void | |
136 | _Safe_forward_list<_SafeSequence>:: | |
137 | _M_swap_single(_Safe_sequence_base& __other) noexcept | |
138 | { | |
139 | std::swap(_M_this()._M_iterators, __other._M_iterators); | |
140 | std::swap(_M_this()._M_const_iterators, __other._M_const_iterators); | |
141 | // Useless, always 1 on forward_list | |
142 | //std::swap(_M_this()_M_version, __other._M_version); | |
143 | _Safe_iterator_base* __this_its = _M_this()._M_iterators; | |
144 | _M_swap_aux(__other, __other._M_iterators, | |
145 | _M_this(), _M_this()._M_iterators); | |
146 | _Safe_iterator_base* __this_const_its = _M_this()._M_const_iterators; | |
147 | _M_swap_aux(__other, __other._M_const_iterators, | |
148 | _M_this(), _M_this()._M_const_iterators); | |
149 | _M_swap_aux(_M_this(), __this_its, | |
150 | __other, __other._M_iterators); | |
151 | _M_swap_aux(_M_this(), __this_const_its, | |
152 | __other, __other._M_const_iterators); | |
153 | } | |
154 | ||
155 | /* Special forward_list _M_swap version that does not swap the | |
156 | * before-begin ownership.*/ | |
157 | template<typename _SafeSequence> | |
158 | void | |
159 | _Safe_forward_list<_SafeSequence>:: | |
160 | _M_swap(_Safe_sequence_base& __other) noexcept | |
161 | { | |
162 | // We need to lock both sequences to swap | |
163 | using namespace __gnu_cxx; | |
164 | __mutex *__this_mutex = &_M_this()._M_get_mutex(); | |
165 | __mutex *__other_mutex = | |
166 | &static_cast<_SafeSequence&>(__other)._M_get_mutex(); | |
167 | if (__this_mutex == __other_mutex) | |
168 | { | |
169 | __scoped_lock __lock(*__this_mutex); | |
170 | _M_swap_single(__other); | |
171 | } | |
172 | else | |
173 | { | |
174 | __scoped_lock __l1(__this_mutex < __other_mutex | |
175 | ? *__this_mutex : *__other_mutex); | |
176 | __scoped_lock __l2(__this_mutex < __other_mutex | |
177 | ? *__other_mutex : *__this_mutex); | |
178 | _M_swap_single(__other); | |
179 | } | |
180 | } | |
181 | } | |
182 | ||
12ffa228 | 183 | namespace std _GLIBCXX_VISIBILITY(default) |
b8b4301e PC |
184 | { |
185 | namespace __debug | |
186 | { | |
187 | /// Class std::forward_list with safety/checking/debug instrumentation. | |
188 | template<typename _Tp, typename _Alloc = std::allocator<_Tp> > | |
189 | class forward_list | |
15ee1a77 FD |
190 | : public __gnu_debug::_Safe_container< |
191 | forward_list<_Tp, _Alloc>, _Alloc, __gnu_debug::_Safe_forward_list>, | |
192 | public _GLIBCXX_STD_C::forward_list<_Tp, _Alloc> | |
b8b4301e | 193 | { |
15ee1a77 FD |
194 | typedef _GLIBCXX_STD_C::forward_list<_Tp, _Alloc> _Base; |
195 | typedef __gnu_debug::_Safe_container< | |
196 | forward_list, _Alloc, __gnu_debug::_Safe_forward_list> _Safe; | |
b8b4301e | 197 | |
15ee1a77 FD |
198 | typedef typename _Base::iterator _Base_iterator; |
199 | typedef typename _Base::const_iterator _Base_const_iterator; | |
e9afbed0 FD |
200 | |
201 | template<typename _ItT, typename _SeqT, typename _CatT> | |
202 | friend class ::__gnu_debug::_Safe_iterator; | |
e77c9aed | 203 | |
eca833b8 JW |
204 | // Reference wrapper for base class. See PR libstdc++/90102. |
205 | struct _Base_ref | |
206 | { | |
207 | _Base_ref(const _Base& __r) : _M_ref(__r) { } | |
208 | ||
209 | const _Base& _M_ref; | |
210 | }; | |
211 | ||
b8b4301e | 212 | public: |
15ee1a77 FD |
213 | typedef typename _Base::reference reference; |
214 | typedef typename _Base::const_reference const_reference; | |
b8b4301e | 215 | |
15ee1a77 FD |
216 | typedef __gnu_debug::_Safe_iterator< |
217 | _Base_iterator, forward_list> iterator; | |
218 | typedef __gnu_debug::_Safe_iterator< | |
219 | _Base_const_iterator, forward_list> const_iterator; | |
b8b4301e | 220 | |
15ee1a77 FD |
221 | typedef typename _Base::size_type size_type; |
222 | typedef typename _Base::difference_type difference_type; | |
b8b4301e | 223 | |
15ee1a77 FD |
224 | typedef _Tp value_type; |
225 | typedef typename _Base::allocator_type allocator_type; | |
226 | typedef typename _Base::pointer pointer; | |
227 | typedef typename _Base::const_pointer const_pointer; | |
b8b4301e PC |
228 | |
229 | // 23.2.3.1 construct/copy/destroy: | |
21bdef94 JW |
230 | |
231 | forward_list() = default; | |
232 | ||
b8b4301e | 233 | explicit |
21bdef94 | 234 | forward_list(const allocator_type& __al) noexcept |
b8b4301e PC |
235 | : _Base(__al) { } |
236 | ||
15ee1a77 | 237 | forward_list(const forward_list& __list, const allocator_type& __al) |
b8b4301e PC |
238 | : _Base(__list, __al) |
239 | { } | |
240 | ||
15ee1a77 FD |
241 | forward_list(forward_list&& __list, const allocator_type& __al) |
242 | : _Safe(std::move(__list._M_safe()), __al), | |
243 | _Base(std::move(__list._M_base()), __al) | |
244 | { } | |
b8b4301e PC |
245 | |
246 | explicit | |
15ee1a77 | 247 | forward_list(size_type __n, const allocator_type& __al = allocator_type()) |
e77c9aed | 248 | : _Base(__n, __al) |
b8b4301e PC |
249 | { } |
250 | ||
251 | forward_list(size_type __n, const _Tp& __value, | |
15ee1a77 | 252 | const allocator_type& __al = allocator_type()) |
b8b4301e PC |
253 | : _Base(__n, __value, __al) |
254 | { } | |
255 | ||
2203cb90 PC |
256 | template<typename _InputIterator, |
257 | typename = std::_RequireInputIter<_InputIterator>> | |
258 | forward_list(_InputIterator __first, _InputIterator __last, | |
15ee1a77 | 259 | const allocator_type& __al = allocator_type()) |
90aabc7e FD |
260 | : _Base(__gnu_debug::__base( |
261 | __glibcxx_check_valid_constructor_range(__first, __last)), | |
b8b4301e | 262 | __gnu_debug::__base(__last), __al) |
15ee1a77 | 263 | { } |
b8b4301e | 264 | |
15ee1a77 | 265 | forward_list(const forward_list&) = default; |
b8b4301e | 266 | |
15ee1a77 | 267 | forward_list(forward_list&&) = default; |
b8b4301e PC |
268 | |
269 | forward_list(std::initializer_list<_Tp> __il, | |
15ee1a77 | 270 | const allocator_type& __al = allocator_type()) |
b8b4301e PC |
271 | : _Base(__il, __al) |
272 | { } | |
273 | ||
15ee1a77 | 274 | ~forward_list() = default; |
b8b4301e | 275 | |
eca833b8 JW |
276 | forward_list(_Base_ref __x) : _Base(__x._M_ref) { } |
277 | ||
b8b4301e | 278 | forward_list& |
15ee1a77 | 279 | operator=(const forward_list&) = default; |
b8b4301e PC |
280 | |
281 | forward_list& | |
15ee1a77 | 282 | operator=(forward_list&&) = default; |
b8b4301e PC |
283 | |
284 | forward_list& | |
285 | operator=(std::initializer_list<_Tp> __il) | |
286 | { | |
15ee1a77 | 287 | _M_base() = __il; |
b8b4301e | 288 | this->_M_invalidate_all(); |
15ee1a77 | 289 | return *this; |
b8b4301e PC |
290 | } |
291 | ||
2203cb90 PC |
292 | template<typename _InputIterator, |
293 | typename = std::_RequireInputIter<_InputIterator>> | |
294 | void | |
15ee1a77 FD |
295 | assign(_InputIterator __first, _InputIterator __last) |
296 | { | |
24167c42 FD |
297 | typename __gnu_debug::_Distance_traits<_InputIterator>::__type __dist; |
298 | __glibcxx_check_valid_range2(__first, __last, __dist); | |
299 | ||
300 | if (__dist.second >= __gnu_debug::__dp_sign) | |
301 | _Base::assign(__gnu_debug::__unsafe(__first), | |
302 | __gnu_debug::__unsafe(__last)); | |
303 | else | |
304 | _Base::assign(__first, __last); | |
305 | ||
b8b4301e | 306 | this->_M_invalidate_all(); |
15ee1a77 | 307 | } |
b8b4301e PC |
308 | |
309 | void | |
310 | assign(size_type __n, const _Tp& __val) | |
311 | { | |
312 | _Base::assign(__n, __val); | |
313 | this->_M_invalidate_all(); | |
314 | } | |
315 | ||
316 | void | |
317 | assign(std::initializer_list<_Tp> __il) | |
318 | { | |
319 | _Base::assign(__il); | |
320 | this->_M_invalidate_all(); | |
321 | } | |
322 | ||
323 | using _Base::get_allocator; | |
324 | ||
325 | // iterators: | |
326 | ||
327 | iterator | |
d3677132 | 328 | before_begin() noexcept |
3e670ecf | 329 | { return { _Base::before_begin(), this }; } |
b8b4301e PC |
330 | |
331 | const_iterator | |
d3677132 | 332 | before_begin() const noexcept |
3e670ecf | 333 | { return { _Base::before_begin(), this }; } |
b8b4301e PC |
334 | |
335 | iterator | |
d3677132 | 336 | begin() noexcept |
3e670ecf | 337 | { return { _Base::begin(), this }; } |
b8b4301e PC |
338 | |
339 | const_iterator | |
d3677132 | 340 | begin() const noexcept |
3e670ecf | 341 | { return { _Base::begin(), this }; } |
b8b4301e PC |
342 | |
343 | iterator | |
d3677132 | 344 | end() noexcept |
3e670ecf | 345 | { return { _Base::end(), this }; } |
b8b4301e PC |
346 | |
347 | const_iterator | |
d3677132 | 348 | end() const noexcept |
3e670ecf | 349 | { return { _Base::end(), this }; } |
b8b4301e PC |
350 | |
351 | const_iterator | |
d3677132 | 352 | cbegin() const noexcept |
3e670ecf | 353 | { return { _Base::cbegin(), this }; } |
b8b4301e PC |
354 | |
355 | const_iterator | |
d3677132 | 356 | cbefore_begin() const noexcept |
3e670ecf | 357 | { return { _Base::cbefore_begin(), this }; } |
b8b4301e PC |
358 | |
359 | const_iterator | |
d3677132 | 360 | cend() const noexcept |
3e670ecf | 361 | { return { _Base::cend(), this }; } |
b8b4301e PC |
362 | |
363 | using _Base::empty; | |
364 | using _Base::max_size; | |
365 | ||
366 | // element access: | |
367 | ||
368 | reference | |
369 | front() | |
370 | { | |
371 | __glibcxx_check_nonempty(); | |
372 | return _Base::front(); | |
373 | } | |
374 | ||
375 | const_reference | |
376 | front() const | |
377 | { | |
378 | __glibcxx_check_nonempty(); | |
379 | return _Base::front(); | |
380 | } | |
381 | ||
3c732e6f | 382 | // modifiers: |
b8b4301e PC |
383 | |
384 | using _Base::emplace_front; | |
385 | using _Base::push_front; | |
386 | ||
387 | void | |
388 | pop_front() | |
389 | { | |
390 | __glibcxx_check_nonempty(); | |
afe96d41 FD |
391 | this->_M_invalidate_if([this](_Base_const_iterator __it) |
392 | { return __it == this->_M_base().cbegin(); }); | |
b8b4301e PC |
393 | _Base::pop_front(); |
394 | } | |
395 | ||
396 | template<typename... _Args> | |
397 | iterator | |
398 | emplace_after(const_iterator __pos, _Args&&... __args) | |
399 | { | |
400 | __glibcxx_check_insert_after(__pos); | |
3e670ecf | 401 | return { _Base::emplace_after(__pos.base(), |
b8b4301e | 402 | std::forward<_Args>(__args)...), |
3e670ecf | 403 | this }; |
b8b4301e PC |
404 | } |
405 | ||
406 | iterator | |
407 | insert_after(const_iterator __pos, const _Tp& __val) | |
408 | { | |
409 | __glibcxx_check_insert_after(__pos); | |
3e670ecf | 410 | return { _Base::insert_after(__pos.base(), __val), this }; |
b8b4301e PC |
411 | } |
412 | ||
413 | iterator | |
414 | insert_after(const_iterator __pos, _Tp&& __val) | |
415 | { | |
416 | __glibcxx_check_insert_after(__pos); | |
3e670ecf | 417 | return { _Base::insert_after(__pos.base(), std::move(__val)), this }; |
b8b4301e PC |
418 | } |
419 | ||
420 | iterator | |
421 | insert_after(const_iterator __pos, size_type __n, const _Tp& __val) | |
422 | { | |
423 | __glibcxx_check_insert_after(__pos); | |
3e670ecf | 424 | return { _Base::insert_after(__pos.base(), __n, __val), this }; |
b8b4301e PC |
425 | } |
426 | ||
2203cb90 PC |
427 | template<typename _InputIterator, |
428 | typename = std::_RequireInputIter<_InputIterator>> | |
15ee1a77 FD |
429 | iterator |
430 | insert_after(const_iterator __pos, | |
431 | _InputIterator __first, _InputIterator __last) | |
432 | { | |
24167c42 FD |
433 | typename __gnu_debug::_Distance_traits<_InputIterator>::__type __dist; |
434 | __glibcxx_check_insert_range_after(__pos, __first, __last, __dist); | |
435 | ||
436 | if (__dist.second >= __gnu_debug::__dp_sign) | |
437 | return | |
438 | { | |
439 | _Base::insert_after(__pos.base(), | |
440 | __gnu_debug::__unsafe(__first), | |
441 | __gnu_debug::__unsafe(__last)), | |
442 | this | |
443 | }; | |
444 | else | |
445 | return { _Base::insert_after(__pos.base(), __first, __last), this }; | |
15ee1a77 | 446 | } |
b8b4301e PC |
447 | |
448 | iterator | |
449 | insert_after(const_iterator __pos, std::initializer_list<_Tp> __il) | |
450 | { | |
451 | __glibcxx_check_insert_after(__pos); | |
3e670ecf | 452 | return { _Base::insert_after(__pos.base(), __il), this }; |
b8b4301e PC |
453 | } |
454 | ||
afe96d41 FD |
455 | private: |
456 | _Base_iterator | |
457 | _M_erase_after(_Base_const_iterator __pos) | |
458 | { | |
459 | _Base_const_iterator __next = std::next(__pos); | |
460 | this->_M_invalidate_if([__next](_Base_const_iterator __it) | |
461 | { return __it == __next; }); | |
462 | return _Base::erase_after(__pos); | |
463 | } | |
464 | public: | |
efb7b456 | 465 | iterator |
b8b4301e PC |
466 | erase_after(const_iterator __pos) |
467 | { | |
468 | __glibcxx_check_erase_after(__pos); | |
3e670ecf | 469 | return { _M_erase_after(__pos.base()), this }; |
b8b4301e PC |
470 | } |
471 | ||
efb7b456 | 472 | iterator |
b8b4301e PC |
473 | erase_after(const_iterator __pos, const_iterator __last) |
474 | { | |
475 | __glibcxx_check_erase_range_after(__pos, __last); | |
afe96d41 FD |
476 | for (_Base_const_iterator __victim = std::next(__pos.base()); |
477 | __victim != __last.base(); ++__victim) | |
b8b4301e | 478 | { |
3e670ecf | 479 | _GLIBCXX_DEBUG_VERIFY(__victim != _Base::cend(), |
afe96d41 FD |
480 | _M_message(__gnu_debug::__msg_valid_range2) |
481 | ._M_sequence(*this, "this") | |
482 | ._M_iterator(__pos, "pos") | |
483 | ._M_iterator(__last, "last")); | |
484 | this->_M_invalidate_if([__victim](_Base_const_iterator __it) | |
485 | { return __it == __victim; }); | |
b8b4301e | 486 | } |
3e670ecf FD |
487 | |
488 | return { _Base::erase_after(__pos.base(), __last.base()), this }; | |
b8b4301e PC |
489 | } |
490 | ||
491 | void | |
492 | swap(forward_list& __list) | |
c5d9ec56 | 493 | noexcept( noexcept(declval<_Base&>().swap(__list)) ) |
b8b4301e | 494 | { |
15ee1a77 | 495 | _Safe::_M_swap(__list); |
b8b4301e | 496 | _Base::swap(__list); |
b8b4301e PC |
497 | } |
498 | ||
499 | void | |
500 | resize(size_type __sz) | |
501 | { | |
502 | this->_M_detach_singular(); | |
503 | ||
504 | // if __sz < size(), invalidate all iterators in [begin+__sz, end() | |
afe96d41 FD |
505 | _Base_iterator __victim = _Base::begin(); |
506 | _Base_iterator __end = _Base::end(); | |
b8b4301e PC |
507 | for (size_type __i = __sz; __victim != __end && __i > 0; --__i) |
508 | ++__victim; | |
509 | ||
afe96d41 | 510 | for (; __victim != __end; ++__victim) |
b8b4301e | 511 | { |
afe96d41 FD |
512 | this->_M_invalidate_if([__victim](_Base_const_iterator __it) |
513 | { return __it == __victim; }); | |
b8b4301e PC |
514 | } |
515 | ||
516 | __try | |
517 | { | |
518 | _Base::resize(__sz); | |
519 | } | |
520 | __catch(...) | |
521 | { | |
522 | this->_M_revalidate_singular(); | |
523 | __throw_exception_again; | |
15ee1a77 | 524 | } |
b8b4301e PC |
525 | } |
526 | ||
527 | void | |
528 | resize(size_type __sz, const value_type& __val) | |
529 | { | |
530 | this->_M_detach_singular(); | |
531 | ||
532 | // if __sz < size(), invalidate all iterators in [begin+__sz, end()) | |
afe96d41 FD |
533 | _Base_iterator __victim = _Base::begin(); |
534 | _Base_iterator __end = _Base::end(); | |
b8b4301e PC |
535 | for (size_type __i = __sz; __victim != __end && __i > 0; --__i) |
536 | ++__victim; | |
537 | ||
afe96d41 | 538 | for (; __victim != __end; ++__victim) |
b8b4301e | 539 | { |
afe96d41 FD |
540 | this->_M_invalidate_if([__victim](_Base_const_iterator __it) |
541 | { return __it == __victim; }); | |
b8b4301e PC |
542 | } |
543 | ||
544 | __try | |
545 | { | |
546 | _Base::resize(__sz, __val); | |
547 | } | |
548 | __catch(...) | |
549 | { | |
550 | this->_M_revalidate_singular(); | |
551 | __throw_exception_again; | |
15ee1a77 | 552 | } |
b8b4301e PC |
553 | } |
554 | ||
555 | void | |
d3677132 | 556 | clear() noexcept |
b8b4301e PC |
557 | { |
558 | _Base::clear(); | |
559 | this->_M_invalidate_all(); | |
560 | } | |
561 | ||
562 | // 23.2.3.5 forward_list operations: | |
b8b4301e PC |
563 | void |
564 | splice_after(const_iterator __pos, forward_list&& __list) | |
565 | { | |
15ee1a77 | 566 | __glibcxx_check_insert_after(__pos); |
9649e5b6 | 567 | _GLIBCXX_DEBUG_VERIFY(std::__addressof(__list) != this, |
b8b4301e PC |
568 | _M_message(__gnu_debug::__msg_self_splice) |
569 | ._M_sequence(*this, "this")); | |
7c688ade JW |
570 | _GLIBCXX_DEBUG_VERIFY(__list.get_allocator() == this->get_allocator(), |
571 | _M_message(__gnu_debug::__msg_splice_alloc) | |
572 | ._M_sequence(*this) | |
573 | ._M_sequence(__list, "__list")); | |
afe96d41 FD |
574 | this->_M_transfer_from_if(__list, [&__list](_Base_const_iterator __it) |
575 | { | |
576 | return __it != __list._M_base().cbefore_begin() | |
577 | && __it != __list._M_base().end(); | |
578 | }); | |
579 | _Base::splice_after(__pos.base(), std::move(__list._M_base())); | |
b8b4301e PC |
580 | } |
581 | ||
78263296 PC |
582 | void |
583 | splice_after(const_iterator __pos, forward_list& __list) | |
584 | { splice_after(__pos, std::move(__list)); } | |
585 | ||
b8b4301e PC |
586 | void |
587 | splice_after(const_iterator __pos, forward_list&& __list, | |
588 | const_iterator __i) | |
589 | { | |
590 | __glibcxx_check_insert_after(__pos); | |
591 | _GLIBCXX_DEBUG_VERIFY(__i._M_before_dereferenceable(), | |
592 | _M_message(__gnu_debug::__msg_splice_bad) | |
593 | ._M_iterator(__i, "__i")); | |
9649e5b6 | 594 | _GLIBCXX_DEBUG_VERIFY(__i._M_attached_to(std::__addressof(__list)), |
b8b4301e PC |
595 | _M_message(__gnu_debug::__msg_splice_other) |
596 | ._M_iterator(__i, "__i") | |
597 | ._M_sequence(__list, "__list")); | |
7c688ade JW |
598 | _GLIBCXX_DEBUG_VERIFY(__list.get_allocator() == this->get_allocator(), |
599 | _M_message(__gnu_debug::__msg_splice_alloc) | |
600 | ._M_sequence(*this) | |
601 | ._M_sequence(__list, "__list")); | |
b8b4301e PC |
602 | |
603 | // _GLIBCXX_RESOLVE_LIB_DEFECTS | |
604 | // 250. splicing invalidates iterators | |
afe96d41 FD |
605 | _Base_const_iterator __next = std::next(__i.base()); |
606 | this->_M_transfer_from_if(__list, [__next](_Base_const_iterator __it) | |
607 | { return __it == __next; }); | |
b8b4301e PC |
608 | _Base::splice_after(__pos.base(), std::move(__list._M_base()), |
609 | __i.base()); | |
610 | } | |
611 | ||
78263296 PC |
612 | void |
613 | splice_after(const_iterator __pos, forward_list& __list, | |
614 | const_iterator __i) | |
615 | { splice_after(__pos, std::move(__list), __i); } | |
616 | ||
b8b4301e PC |
617 | void |
618 | splice_after(const_iterator __pos, forward_list&& __list, | |
619 | const_iterator __before, const_iterator __last) | |
620 | { | |
24167c42 | 621 | typename __gnu_debug::_Distance_traits<const_iterator>::__type __dist; |
9649e5b6 | 622 | auto __listptr = std::__addressof(__list); |
15ee1a77 | 623 | __glibcxx_check_insert_after(__pos); |
24167c42 | 624 | __glibcxx_check_valid_fl_range(__before, __last, __dist); |
9649e5b6 | 625 | _GLIBCXX_DEBUG_VERIFY(__before._M_attached_to(__listptr), |
b8b4301e PC |
626 | _M_message(__gnu_debug::__msg_splice_other) |
627 | ._M_sequence(__list, "list") | |
628 | ._M_iterator(__before, "before")); | |
629 | _GLIBCXX_DEBUG_VERIFY(__before._M_dereferenceable() | |
630 | || __before._M_is_before_begin(), | |
631 | _M_message(__gnu_debug::__msg_valid_range2) | |
632 | ._M_sequence(__list, "list") | |
633 | ._M_iterator(__before, "before") | |
634 | ._M_iterator(__last, "last")); | |
635 | _GLIBCXX_DEBUG_VERIFY(__before != __last, | |
636 | _M_message(__gnu_debug::__msg_valid_range2) | |
637 | ._M_sequence(__list, "list") | |
638 | ._M_iterator(__before, "before") | |
639 | ._M_iterator(__last, "last")); | |
7c688ade JW |
640 | _GLIBCXX_DEBUG_VERIFY(__list.get_allocator() == this->get_allocator(), |
641 | _M_message(__gnu_debug::__msg_splice_alloc) | |
642 | ._M_sequence(*this) | |
643 | ._M_sequence(__list, "__list")); | |
afe96d41 FD |
644 | |
645 | for (_Base_const_iterator __tmp = std::next(__before.base()); | |
646 | __tmp != __last.base(); ++__tmp) | |
647 | { | |
648 | _GLIBCXX_DEBUG_VERIFY(__tmp != __list._M_base().end(), | |
649 | _M_message(__gnu_debug::__msg_valid_range2) | |
650 | ._M_sequence(__list, "list") | |
651 | ._M_iterator(__before, "before") | |
652 | ._M_iterator(__last, "last")); | |
9649e5b6 | 653 | _GLIBCXX_DEBUG_VERIFY(__listptr != this || __tmp != __pos.base(), |
15ee1a77 FD |
654 | _M_message(__gnu_debug::__msg_splice_overlap) |
655 | ._M_iterator(__tmp, "position") | |
afe96d41 FD |
656 | ._M_iterator(__before, "before") |
657 | ._M_iterator(__last, "last")); | |
658 | // _GLIBCXX_RESOLVE_LIB_DEFECTS | |
659 | // 250. splicing invalidates iterators | |
660 | this->_M_transfer_from_if(__list, [__tmp](_Base_const_iterator __it) | |
661 | { return __it == __tmp; }); | |
662 | } | |
663 | ||
664 | _Base::splice_after(__pos.base(), std::move(__list._M_base()), | |
665 | __before.base(), __last.base()); | |
b8b4301e PC |
666 | } |
667 | ||
78263296 PC |
668 | void |
669 | splice_after(const_iterator __pos, forward_list& __list, | |
670 | const_iterator __before, const_iterator __last) | |
671 | { splice_after(__pos, std::move(__list), __before, __last); } | |
672 | ||
f7191a37 FD |
673 | private: |
674 | #if __cplusplus > 201703L | |
675 | using __remove_return_type = size_type; | |
676 | # define _GLIBCXX_FWDLIST_REMOVE_RETURN_TYPE_TAG \ | |
677 | __attribute__((__abi_tag__("__cxx20"))) | |
678 | # define _GLIBCXX20_ONLY(__expr) __expr | |
679 | #else | |
680 | using __remove_return_type = void; | |
681 | # define _GLIBCXX_FWDLIST_REMOVE_RETURN_TYPE_TAG | |
682 | # define _GLIBCXX20_ONLY(__expr) | |
683 | #endif | |
684 | ||
685 | public: | |
686 | _GLIBCXX_FWDLIST_REMOVE_RETURN_TYPE_TAG | |
687 | __remove_return_type | |
b8b4301e PC |
688 | remove(const _Tp& __val) |
689 | { | |
f7191a37 FD |
690 | if (!this->_M_iterators && !this->_M_const_iterators) |
691 | return _Base::remove(__val); | |
692 | ||
693 | size_type __removed __attribute__((__unused__)) = 0; | |
afe96d41 FD |
694 | _Base_iterator __x = _Base::before_begin(); |
695 | _Base_iterator __old = __x++; | |
f7191a37 | 696 | _Base_iterator __extra = _Base::end(); |
afe96d41 | 697 | while (__x != _Base::end()) |
b8b4301e PC |
698 | { |
699 | if (*__x == __val) | |
f7191a37 FD |
700 | { |
701 | if (std::__addressof(*__x) != std::__addressof(__val)) | |
702 | { | |
703 | __x = _M_erase_after(__old); | |
704 | _GLIBCXX20_ONLY( __removed++ ); | |
705 | continue; | |
706 | } | |
707 | else | |
708 | __extra = __old; | |
709 | } | |
710 | __old = __x++; | |
b8b4301e | 711 | } |
f7191a37 FD |
712 | |
713 | if (__extra != _Base::end()) | |
714 | { | |
715 | this->_M_erase_after(__extra); | |
716 | _GLIBCXX20_ONLY( __removed++ ); | |
717 | } | |
718 | ||
719 | return _GLIBCXX20_ONLY( __removed ); | |
b8b4301e PC |
720 | } |
721 | ||
722 | template<typename _Pred> | |
f7191a37 | 723 | __remove_return_type |
15ee1a77 | 724 | remove_if(_Pred __pred) |
b8b4301e | 725 | { |
f7191a37 FD |
726 | if (!this->_M_iterators && !this->_M_const_iterators) |
727 | return _Base::remove_if(__pred); | |
728 | ||
729 | size_type __removed __attribute__((__unused__)) = 0; | |
afe96d41 FD |
730 | _Base_iterator __x = _Base::before_begin(); |
731 | _Base_iterator __old = __x++; | |
732 | while (__x != _Base::end()) | |
f7191a37 FD |
733 | if (__pred(*__x)) |
734 | { | |
afe96d41 | 735 | __x = _M_erase_after(__old); |
f7191a37 FD |
736 | _GLIBCXX20_ONLY( __removed++ ); |
737 | } | |
738 | else | |
739 | __old = __x++; | |
740 | ||
741 | return _GLIBCXX20_ONLY( __removed ); | |
b8b4301e PC |
742 | } |
743 | ||
f7191a37 FD |
744 | _GLIBCXX_FWDLIST_REMOVE_RETURN_TYPE_TAG |
745 | __remove_return_type | |
b8b4301e | 746 | unique() |
f7191a37 | 747 | { return unique(std::equal_to<_Tp>()); } |
b8b4301e PC |
748 | |
749 | template<typename _BinPred> | |
f7191a37 | 750 | __remove_return_type |
15ee1a77 | 751 | unique(_BinPred __binary_pred) |
b8b4301e | 752 | { |
f7191a37 FD |
753 | if (!this->_M_iterators && !this->_M_const_iterators) |
754 | return _Base::unique(__binary_pred); | |
755 | ||
afe96d41 FD |
756 | _Base_iterator __first = _Base::begin(); |
757 | _Base_iterator __last = _Base::end(); | |
b8b4301e | 758 | if (__first == __last) |
f7191a37 FD |
759 | return _GLIBCXX20_ONLY(0); |
760 | ||
761 | size_type __removed __attribute__((__unused__)) = 0; | |
afe96d41 FD |
762 | _Base_iterator __next = std::next(__first); |
763 | while (__next != __last) | |
b8b4301e PC |
764 | { |
765 | if (__binary_pred(*__first, *__next)) | |
f7191a37 FD |
766 | { |
767 | __next = _M_erase_after(__first); | |
768 | _GLIBCXX20_ONLY( __removed++ ); | |
769 | } | |
b8b4301e | 770 | else |
afe96d41 | 771 | __first = __next++; |
b8b4301e | 772 | } |
f7191a37 FD |
773 | |
774 | return _GLIBCXX20_ONLY( __removed ); | |
b8b4301e PC |
775 | } |
776 | ||
f7191a37 FD |
777 | #undef _GLIBCXX_FWDLIST_REMOVE_RETURN_TYPE_TAG |
778 | #undef _GLIBCXX20_ONLY | |
779 | ||
b8b4301e PC |
780 | void |
781 | merge(forward_list&& __list) | |
782 | { | |
9649e5b6 | 783 | if (this != std::__addressof(__list)) |
b8b4301e PC |
784 | { |
785 | __glibcxx_check_sorted(_Base::begin(), _Base::end()); | |
786 | __glibcxx_check_sorted(__list._M_base().begin(), | |
787 | __list._M_base().end()); | |
afe96d41 | 788 | this->_M_transfer_from_if(__list, [&__list](_Base_const_iterator __it) |
b8b4301e | 789 | { |
afe96d41 FD |
790 | return __it != __list._M_base().cbefore_begin() |
791 | && __it != __list._M_base().cend(); | |
792 | }); | |
b8b4301e PC |
793 | _Base::merge(std::move(__list._M_base())); |
794 | } | |
795 | } | |
796 | ||
78263296 PC |
797 | void |
798 | merge(forward_list& __list) | |
799 | { merge(std::move(__list)); } | |
800 | ||
b8b4301e | 801 | template<typename _Comp> |
15ee1a77 FD |
802 | void |
803 | merge(forward_list&& __list, _Comp __comp) | |
b8b4301e | 804 | { |
9649e5b6 | 805 | if (this != std::__addressof(__list)) |
b8b4301e PC |
806 | { |
807 | __glibcxx_check_sorted_pred(_Base::begin(), _Base::end(), __comp); | |
808 | __glibcxx_check_sorted_pred(__list._M_base().begin(), | |
809 | __list._M_base().end(), __comp); | |
afe96d41 FD |
810 | this->_M_transfer_from_if(__list, |
811 | [&__list](_Base_const_iterator __it) | |
b8b4301e | 812 | { |
15ee1a77 | 813 | return __it != __list._M_base().cbefore_begin() |
afe96d41 FD |
814 | && __it != __list._M_base().cend(); |
815 | }); | |
b8b4301e PC |
816 | _Base::merge(std::move(__list._M_base()), __comp); |
817 | } | |
818 | } | |
819 | ||
78263296 | 820 | template<typename _Comp> |
15ee1a77 FD |
821 | void |
822 | merge(forward_list& __list, _Comp __comp) | |
823 | { merge(std::move(__list), __comp); } | |
78263296 | 824 | |
b8b4301e PC |
825 | using _Base::sort; |
826 | using _Base::reverse; | |
827 | ||
828 | _Base& | |
15ee1a77 | 829 | _M_base() noexcept { return *this; } |
b8b4301e PC |
830 | |
831 | const _Base& | |
d3677132 | 832 | _M_base() const noexcept { return *this; } |
b8b4301e PC |
833 | }; |
834 | ||
957f5fea VV |
835 | #if __cpp_deduction_guides >= 201606 |
836 | template<typename _InputIterator, typename _ValT | |
837 | = typename iterator_traits<_InputIterator>::value_type, | |
838 | typename _Allocator = allocator<_ValT>, | |
839 | typename = _RequireInputIter<_InputIterator>, | |
840 | typename = _RequireAllocator<_Allocator>> | |
841 | forward_list(_InputIterator, _InputIterator, _Allocator = _Allocator()) | |
842 | -> forward_list<_ValT, _Allocator>; | |
843 | #endif | |
844 | ||
b8b4301e PC |
845 | template<typename _Tp, typename _Alloc> |
846 | bool | |
847 | operator==(const forward_list<_Tp, _Alloc>& __lx, | |
15ee1a77 | 848 | const forward_list<_Tp, _Alloc>& __ly) |
b8b4301e PC |
849 | { return __lx._M_base() == __ly._M_base(); } |
850 | ||
bd2420f8 JW |
851 | #if __cpp_lib_three_way_comparison |
852 | template<typename _Tp, typename _Alloc> | |
853 | constexpr __detail::__synth3way_t<_Tp> | |
854 | operator<=>(const forward_list<_Tp, _Alloc>& __x, | |
855 | const forward_list<_Tp, _Alloc>& __y) | |
856 | { return __x._M_base() <=> __y._M_base(); } | |
857 | #else | |
b8b4301e PC |
858 | template<typename _Tp, typename _Alloc> |
859 | inline bool | |
860 | operator<(const forward_list<_Tp, _Alloc>& __lx, | |
15ee1a77 | 861 | const forward_list<_Tp, _Alloc>& __ly) |
b8b4301e PC |
862 | { return __lx._M_base() < __ly._M_base(); } |
863 | ||
864 | template<typename _Tp, typename _Alloc> | |
865 | inline bool | |
866 | operator!=(const forward_list<_Tp, _Alloc>& __lx, | |
15ee1a77 | 867 | const forward_list<_Tp, _Alloc>& __ly) |
b8b4301e PC |
868 | { return !(__lx == __ly); } |
869 | ||
870 | /// Based on operator< | |
871 | template<typename _Tp, typename _Alloc> | |
872 | inline bool | |
873 | operator>(const forward_list<_Tp, _Alloc>& __lx, | |
15ee1a77 | 874 | const forward_list<_Tp, _Alloc>& __ly) |
b8b4301e PC |
875 | { return (__ly < __lx); } |
876 | ||
877 | /// Based on operator< | |
878 | template<typename _Tp, typename _Alloc> | |
879 | inline bool | |
880 | operator>=(const forward_list<_Tp, _Alloc>& __lx, | |
15ee1a77 | 881 | const forward_list<_Tp, _Alloc>& __ly) |
b8b4301e PC |
882 | { return !(__lx < __ly); } |
883 | ||
884 | /// Based on operator< | |
885 | template<typename _Tp, typename _Alloc> | |
886 | inline bool | |
887 | operator<=(const forward_list<_Tp, _Alloc>& __lx, | |
15ee1a77 | 888 | const forward_list<_Tp, _Alloc>& __ly) |
b8b4301e | 889 | { return !(__ly < __lx); } |
bd2420f8 | 890 | #endif // three-way comparison |
b8b4301e PC |
891 | |
892 | /// See std::forward_list::swap(). | |
893 | template<typename _Tp, typename _Alloc> | |
894 | inline void | |
c5d9ec56 JW |
895 | swap(forward_list<_Tp, _Alloc>& __lx, forward_list<_Tp, _Alloc>& __ly) |
896 | noexcept(noexcept(__lx.swap(__ly))) | |
b8b4301e PC |
897 | { __lx.swap(__ly); } |
898 | ||
899 | } // namespace __debug | |
900 | } // namespace std | |
901 | ||
902 | namespace __gnu_debug | |
903 | { | |
24167c42 | 904 | template<typename _Tp, typename _Alloc> |
b8b4301e PC |
905 | struct _BeforeBeginHelper<std::__debug::forward_list<_Tp, _Alloc> > |
906 | { | |
afe96d41 | 907 | typedef std::__debug::forward_list<_Tp, _Alloc> _Sequence; |
b8b4301e | 908 | |
9fc0e24b FD |
909 | template<typename _Iterator> |
910 | static bool | |
911 | _S_Is(const _Safe_iterator<_Iterator, _Sequence>& __it) | |
912 | { | |
913 | return | |
914 | __it.base() == __it._M_get_sequence()->_M_base().before_begin(); | |
915 | } | |
079c74f3 | 916 | |
9fc0e24b FD |
917 | template<typename _Iterator> |
918 | static bool | |
919 | _S_Is_Beginnest(const _Safe_iterator<_Iterator, _Sequence>& __it) | |
920 | { return _S_Is(__it); } | |
b8b4301e | 921 | }; |
5720787a | 922 | |
24167c42 FD |
923 | template<typename _Tp, typename _Alloc> |
924 | struct _Sequence_traits<std::__debug::forward_list<_Tp, _Alloc> > | |
925 | { | |
926 | typedef typename std::__debug::forward_list<_Tp, _Alloc>::iterator _It; | |
927 | ||
928 | static typename _Distance_traits<_It>::__type | |
929 | _S_size(const std::__debug::forward_list<_Tp, _Alloc>& __seq) | |
930 | { | |
931 | return __seq.empty() | |
36edf9ca | 932 | ? std::make_pair(0, __dp_exact) : std::make_pair(1, __dp_sign); |
24167c42 FD |
933 | } |
934 | }; | |
935 | ||
5720787a FD |
936 | #ifndef _GLIBCXX_DEBUG_PEDANTIC |
937 | template<class _Tp, class _Alloc> | |
938 | struct _Insert_range_from_self_is_safe< | |
939 | std::__debug::forward_list<_Tp, _Alloc> > | |
9fc0e24b | 940 | { enum { __value = 1 }; }; |
5720787a | 941 | #endif |
b8b4301e PC |
942 | } |
943 | ||
944 | #endif |