1 | // Components for manipulating sequences of characters -*- C++ -*- |
2 | |
3 | // Copyright (C) 1997-2021 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 | /** @file bits/basic_string.h |
26 | * This is an internal header file, included by other library headers. |
27 | * Do not attempt to use it directly. @headername{string} |
28 | */ |
29 | |
30 | // |
31 | // ISO C++ 14882: 21 Strings library |
32 | // |
33 | |
34 | #ifndef _BASIC_STRING_H |
35 | #define _BASIC_STRING_H 1 |
36 | |
37 | #pragma GCC system_header |
38 | |
39 | #include <ext/atomicity.h> |
40 | #include <ext/alloc_traits.h> |
41 | #include <debug/debug.h> |
42 | |
43 | #if __cplusplus >= 201103L |
44 | #include <initializer_list> |
45 | #endif |
46 | |
47 | #if __cplusplus >= 201703L |
48 | # include <string_view> |
49 | #endif |
50 | |
51 | namespace std _GLIBCXX_VISIBILITY(default) |
52 | { |
53 | _GLIBCXX_BEGIN_NAMESPACE_VERSION |
54 | |
55 | #ifdef __cpp_lib_is_constant_evaluated |
56 | // Support P1032R1 in C++20 (but not P0980R1 yet). |
57 | # define __cpp_lib_constexpr_string 201811L |
58 | #elif __cplusplus >= 201703L |
59 | // Support P0426R1 changes to char_traits in C++17. |
60 | # define __cpp_lib_constexpr_string 201611L |
61 | #elif __cplusplus > 201703L |
62 | #endif |
63 | |
64 | #if _GLIBCXX_USE_CXX11_ABI |
65 | _GLIBCXX_BEGIN_NAMESPACE_CXX11 |
66 | /** |
67 | * @class basic_string basic_string.h <string> |
68 | * @brief Managing sequences of characters and character-like objects. |
69 | * |
70 | * @ingroup strings |
71 | * @ingroup sequences |
72 | * |
73 | * @tparam _CharT Type of character |
74 | * @tparam _Traits Traits for character type, defaults to |
75 | * char_traits<_CharT>. |
76 | * @tparam _Alloc Allocator type, defaults to allocator<_CharT>. |
77 | * |
78 | * Meets the requirements of a <a href="tables.html#65">container</a>, a |
79 | * <a href="tables.html#66">reversible container</a>, and a |
80 | * <a href="tables.html#67">sequence</a>. Of the |
81 | * <a href="tables.html#68">optional sequence requirements</a>, only |
82 | * @c push_back, @c at, and @c %array access are supported. |
83 | */ |
84 | template<typename _CharT, typename _Traits, typename _Alloc> |
85 | class basic_string |
86 | { |
87 | typedef typename __gnu_cxx::__alloc_traits<_Alloc>::template |
88 | rebind<_CharT>::other _Char_alloc_type; |
89 | typedef __gnu_cxx::__alloc_traits<_Char_alloc_type> _Alloc_traits; |
90 | |
91 | // Types: |
92 | public: |
93 | typedef _Traits traits_type; |
94 | typedef typename _Traits::char_type value_type; |
95 | typedef _Char_alloc_type allocator_type; |
96 | typedef typename _Alloc_traits::size_type size_type; |
97 | typedef typename _Alloc_traits::difference_type difference_type; |
98 | typedef typename _Alloc_traits::reference reference; |
99 | typedef typename _Alloc_traits::const_reference const_reference; |
100 | typedef typename _Alloc_traits::pointer pointer; |
101 | typedef typename _Alloc_traits::const_pointer const_pointer; |
102 | typedef __gnu_cxx::__normal_iterator<pointer, basic_string> iterator; |
103 | typedef __gnu_cxx::__normal_iterator<const_pointer, basic_string> |
104 | const_iterator; |
105 | typedef std::reverse_iterator<const_iterator> const_reverse_iterator; |
106 | typedef std::reverse_iterator<iterator> reverse_iterator; |
107 | |
108 | /// Value returned by various member functions when they fail. |
109 | static const size_type npos = static_cast<size_type>(-1); |
110 | |
111 | protected: |
112 | // type used for positions in insert, erase etc. |
113 | #if __cplusplus < 201103L |
114 | typedef iterator __const_iterator; |
115 | #else |
116 | typedef const_iterator __const_iterator; |
117 | #endif |
118 | |
119 | private: |
120 | #if __cplusplus >= 201703L |
121 | // A helper type for avoiding boiler-plate. |
122 | typedef basic_string_view<_CharT, _Traits> __sv_type; |
123 | |
124 | template<typename _Tp, typename _Res> |
125 | using _If_sv = enable_if_t< |
126 | __and_<is_convertible<const _Tp&, __sv_type>, |
127 | __not_<is_convertible<const _Tp*, const basic_string*>>, |
128 | __not_<is_convertible<const _Tp&, const _CharT*>>>::value, |
129 | _Res>; |
130 | |
131 | // Allows an implicit conversion to __sv_type. |
132 | static __sv_type |
133 | _S_to_string_view(__sv_type __svt) noexcept |
134 | { return __svt; } |
135 | |
136 | // Wraps a string_view by explicit conversion and thus |
137 | // allows to add an internal constructor that does not |
138 | // participate in overload resolution when a string_view |
139 | // is provided. |
140 | struct __sv_wrapper |
141 | { |
142 | explicit __sv_wrapper(__sv_type __sv) noexcept : _M_sv(__sv) { } |
143 | __sv_type _M_sv; |
144 | }; |
145 | |
146 | /** |
147 | * @brief Only internally used: Construct string from a string view |
148 | * wrapper. |
149 | * @param __svw string view wrapper. |
150 | * @param __a Allocator to use. |
151 | */ |
152 | explicit |
153 | basic_string(__sv_wrapper __svw, const _Alloc& __a) |
154 | : basic_string(__svw._M_sv.data(), __svw._M_sv.size(), __a) { } |
155 | #endif |
156 | |
157 | // Use empty-base optimization: http://www.cantrip.org/emptyopt.html |
158 | struct _Alloc_hider : allocator_type // TODO check __is_final |
159 | { |
160 | #if __cplusplus < 201103L |
161 | _Alloc_hider(pointer __dat, const _Alloc& __a = _Alloc()) |
162 | : allocator_type(__a), _M_p(__dat) { } |
163 | #else |
164 | _Alloc_hider(pointer __dat, const _Alloc& __a) |
165 | : allocator_type(__a), _M_p(__dat) { } |
166 | |
167 | _Alloc_hider(pointer __dat, _Alloc&& __a = _Alloc()) |
168 | : allocator_type(std::move(__a)), _M_p(__dat) { } |
169 | #endif |
170 | |
171 | pointer _M_p; // The actual data. |
172 | }; |
173 | |
174 | _Alloc_hider _M_dataplus; |
175 | size_type _M_string_length; |
176 | |
177 | enum { _S_local_capacity = 15 / sizeof(_CharT) }; |
178 | |
179 | union |
180 | { |
181 | _CharT _M_local_buf[_S_local_capacity + 1]; |
182 | size_type _M_allocated_capacity; |
183 | }; |
184 | |
185 | void |
186 | _M_data(pointer __p) |
187 | { _M_dataplus._M_p = __p; } |
188 | |
189 | void |
190 | _M_length(size_type __length) |
191 | { _M_string_length = __length; } |
192 | |
193 | pointer |
194 | _M_data() const |
195 | { return _M_dataplus._M_p; } |
196 | |
197 | pointer |
198 | _M_local_data() |
199 | { |
200 | #if __cplusplus >= 201103L |
201 | return std::pointer_traits<pointer>::pointer_to(*_M_local_buf); |
202 | #else |
203 | return pointer(_M_local_buf); |
204 | #endif |
205 | } |
206 | |
207 | const_pointer |
208 | _M_local_data() const |
209 | { |
210 | #if __cplusplus >= 201103L |
211 | return std::pointer_traits<const_pointer>::pointer_to(*_M_local_buf); |
212 | #else |
213 | return const_pointer(_M_local_buf); |
214 | #endif |
215 | } |
216 | |
217 | void |
218 | _M_capacity(size_type __capacity) |
219 | { _M_allocated_capacity = __capacity; } |
220 | |
221 | void |
222 | _M_set_length(size_type __n) |
223 | { |
224 | _M_length(length: __n); |
225 | traits_type::assign(_M_data()[__n], _CharT()); |
226 | } |
227 | |
228 | bool |
229 | _M_is_local() const |
230 | { return _M_data() == _M_local_data(); } |
231 | |
232 | // Create & Destroy |
233 | pointer |
234 | _M_create(size_type&, size_type); |
235 | |
236 | void |
237 | _M_dispose() |
238 | { |
239 | if (!_M_is_local()) |
240 | _M_destroy(size: _M_allocated_capacity); |
241 | } |
242 | |
243 | void |
244 | _M_destroy(size_type __size) throw() |
245 | { _Alloc_traits::deallocate(_M_get_allocator(), _M_data(), __size + 1); } |
246 | |
247 | // _M_construct_aux is used to implement the 21.3.1 para 15 which |
248 | // requires special behaviour if _InIterator is an integral type |
249 | template<typename _InIterator> |
250 | void |
251 | _M_construct_aux(_InIterator __beg, _InIterator __end, |
252 | std::__false_type) |
253 | { |
254 | typedef typename iterator_traits<_InIterator>::iterator_category _Tag; |
255 | _M_construct(__beg, __end, _Tag()); |
256 | } |
257 | |
258 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
259 | // 438. Ambiguity in the "do the right thing" clause |
260 | template<typename _Integer> |
261 | void |
262 | _M_construct_aux(_Integer __beg, _Integer __end, std::__true_type) |
263 | { _M_construct_aux_2(req: static_cast<size_type>(__beg), c: __end); } |
264 | |
265 | void |
266 | _M_construct_aux_2(size_type __req, _CharT __c) |
267 | { _M_construct(__req, __c); } |
268 | |
269 | template<typename _InIterator> |
270 | void |
271 | _M_construct(_InIterator __beg, _InIterator __end) |
272 | { |
273 | typedef typename std::__is_integer<_InIterator>::__type _Integral; |
274 | _M_construct_aux(__beg, __end, _Integral()); |
275 | } |
276 | |
277 | // For Input Iterators, used in istreambuf_iterators, etc. |
278 | template<typename _InIterator> |
279 | void |
280 | _M_construct(_InIterator __beg, _InIterator __end, |
281 | std::input_iterator_tag); |
282 | |
283 | // For forward_iterators up to random_access_iterators, used for |
284 | // string::iterator, _CharT*, etc. |
285 | template<typename _FwdIterator> |
286 | void |
287 | _M_construct(_FwdIterator __beg, _FwdIterator __end, |
288 | std::forward_iterator_tag); |
289 | |
290 | void |
291 | _M_construct(size_type __req, _CharT __c); |
292 | |
293 | allocator_type& |
294 | _M_get_allocator() |
295 | { return _M_dataplus; } |
296 | |
297 | const allocator_type& |
298 | _M_get_allocator() const |
299 | { return _M_dataplus; } |
300 | |
301 | private: |
302 | |
303 | #ifdef _GLIBCXX_DISAMBIGUATE_REPLACE_INST |
304 | // The explicit instantiations in misc-inst.cc require this due to |
305 | // https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64063 |
306 | template<typename _Tp, bool _Requires = |
307 | !__are_same<_Tp, _CharT*>::__value |
308 | && !__are_same<_Tp, const _CharT*>::__value |
309 | && !__are_same<_Tp, iterator>::__value |
310 | && !__are_same<_Tp, const_iterator>::__value> |
311 | struct __enable_if_not_native_iterator |
312 | { typedef basic_string& __type; }; |
313 | template<typename _Tp> |
314 | struct __enable_if_not_native_iterator<_Tp, false> { }; |
315 | #endif |
316 | |
317 | size_type |
318 | _M_check(size_type __pos, const char* __s) const |
319 | { |
320 | if (__pos > this->size()) |
321 | __throw_out_of_range_fmt(__N("%s: __pos (which is %zu) > " |
322 | "this->size() (which is %zu)" ), |
323 | __s, __pos, this->size()); |
324 | return __pos; |
325 | } |
326 | |
327 | void |
328 | _M_check_length(size_type __n1, size_type __n2, const char* __s) const |
329 | { |
330 | if (this->max_size() - (this->size() - __n1) < __n2) |
331 | __throw_length_error(__N(__s)); |
332 | } |
333 | |
334 | |
335 | // NB: _M_limit doesn't check for a bad __pos value. |
336 | size_type |
337 | _M_limit(size_type __pos, size_type __off) const _GLIBCXX_NOEXCEPT |
338 | { |
339 | const bool __testoff = __off < this->size() - __pos; |
340 | return __testoff ? __off : this->size() - __pos; |
341 | } |
342 | |
343 | // True if _Rep and source do not overlap. |
344 | bool |
345 | _M_disjunct(const _CharT* __s) const _GLIBCXX_NOEXCEPT |
346 | { |
347 | return (less<const _CharT*>()(__s, _M_data()) |
348 | || less<const _CharT*>()(_M_data() + this->size(), __s)); |
349 | } |
350 | |
351 | // When __n = 1 way faster than the general multichar |
352 | // traits_type::copy/move/assign. |
353 | static void |
354 | _S_copy(_CharT* __d, const _CharT* __s, size_type __n) |
355 | { |
356 | if (__n == 1) |
357 | traits_type::assign(*__d, *__s); |
358 | else |
359 | traits_type::copy(__d, __s, __n); |
360 | } |
361 | |
362 | static void |
363 | _S_move(_CharT* __d, const _CharT* __s, size_type __n) |
364 | { |
365 | if (__n == 1) |
366 | traits_type::assign(*__d, *__s); |
367 | else |
368 | traits_type::move(__d, __s, __n); |
369 | } |
370 | |
371 | static void |
372 | _S_assign(_CharT* __d, size_type __n, _CharT __c) |
373 | { |
374 | if (__n == 1) |
375 | traits_type::assign(*__d, __c); |
376 | else |
377 | traits_type::assign(__d, __n, __c); |
378 | } |
379 | |
380 | // _S_copy_chars is a separate template to permit specialization |
381 | // to optimize for the common case of pointers as iterators. |
382 | template<class _Iterator> |
383 | static void |
384 | _S_copy_chars(_CharT* __p, _Iterator __k1, _Iterator __k2) |
385 | { |
386 | for (; __k1 != __k2; ++__k1, (void)++__p) |
387 | traits_type::assign(*__p, *__k1); // These types are off. |
388 | } |
389 | |
390 | static void |
391 | _S_copy_chars(_CharT* __p, iterator __k1, iterator __k2) _GLIBCXX_NOEXCEPT |
392 | { _S_copy_chars(__p, __k1.base(), __k2.base()); } |
393 | |
394 | static void |
395 | _S_copy_chars(_CharT* __p, const_iterator __k1, const_iterator __k2) |
396 | _GLIBCXX_NOEXCEPT |
397 | { _S_copy_chars(__p, __k1.base(), __k2.base()); } |
398 | |
399 | static void |
400 | _S_copy_chars(_CharT* __p, _CharT* __k1, _CharT* __k2) _GLIBCXX_NOEXCEPT |
401 | { _S_copy(d: __p, s: __k1, n: __k2 - __k1); } |
402 | |
403 | static void |
404 | _S_copy_chars(_CharT* __p, const _CharT* __k1, const _CharT* __k2) |
405 | _GLIBCXX_NOEXCEPT |
406 | { _S_copy(d: __p, s: __k1, n: __k2 - __k1); } |
407 | |
408 | static int |
409 | _S_compare(size_type __n1, size_type __n2) _GLIBCXX_NOEXCEPT |
410 | { |
411 | const difference_type __d = difference_type(__n1 - __n2); |
412 | |
413 | if (__d > __gnu_cxx::__numeric_traits<int>::__max) |
414 | return __gnu_cxx::__numeric_traits<int>::__max; |
415 | else if (__d < __gnu_cxx::__numeric_traits<int>::__min) |
416 | return __gnu_cxx::__numeric_traits<int>::__min; |
417 | else |
418 | return int(__d); |
419 | } |
420 | |
421 | void |
422 | _M_assign(const basic_string&); |
423 | |
424 | void |
425 | _M_mutate(size_type __pos, size_type __len1, const _CharT* __s, |
426 | size_type __len2); |
427 | |
428 | void |
429 | _M_erase(size_type __pos, size_type __n); |
430 | |
431 | public: |
432 | // Construct/copy/destroy: |
433 | // NB: We overload ctors in some cases instead of using default |
434 | // arguments, per 17.4.4.4 para. 2 item 2. |
435 | |
436 | /** |
437 | * @brief Default constructor creates an empty string. |
438 | */ |
439 | basic_string() |
440 | _GLIBCXX_NOEXCEPT_IF(is_nothrow_default_constructible<_Alloc>::value) |
441 | : _M_dataplus(_M_local_data()) |
442 | { _M_set_length(n: 0); } |
443 | |
444 | /** |
445 | * @brief Construct an empty string using allocator @a a. |
446 | */ |
447 | explicit |
448 | basic_string(const _Alloc& __a) _GLIBCXX_NOEXCEPT |
449 | : _M_dataplus(_M_local_data(), __a) |
450 | { _M_set_length(n: 0); } |
451 | |
452 | /** |
453 | * @brief Construct string with copy of value of @a __str. |
454 | * @param __str Source string. |
455 | */ |
456 | basic_string(const basic_string& __str) |
457 | : _M_dataplus(_M_local_data(), |
458 | _Alloc_traits::_S_select_on_copy(__str._M_get_allocator())) |
459 | { _M_construct(__str._M_data(), __str._M_data() + __str.length()); } |
460 | |
461 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
462 | // 2583. no way to supply an allocator for basic_string(str, pos) |
463 | /** |
464 | * @brief Construct string as copy of a substring. |
465 | * @param __str Source string. |
466 | * @param __pos Index of first character to copy from. |
467 | * @param __a Allocator to use. |
468 | */ |
469 | basic_string(const basic_string& __str, size_type __pos, |
470 | const _Alloc& __a = _Alloc()) |
471 | : _M_dataplus(_M_local_data(), __a) |
472 | { |
473 | const _CharT* __start = __str._M_data() |
474 | + __str._M_check(__pos, "basic_string::basic_string" ); |
475 | _M_construct(__start, __start + __str._M_limit(__pos, npos)); |
476 | } |
477 | |
478 | /** |
479 | * @brief Construct string as copy of a substring. |
480 | * @param __str Source string. |
481 | * @param __pos Index of first character to copy from. |
482 | * @param __n Number of characters to copy. |
483 | */ |
484 | basic_string(const basic_string& __str, size_type __pos, |
485 | size_type __n) |
486 | : _M_dataplus(_M_local_data()) |
487 | { |
488 | const _CharT* __start = __str._M_data() |
489 | + __str._M_check(__pos, "basic_string::basic_string" ); |
490 | _M_construct(__start, __start + __str._M_limit(__pos, __n)); |
491 | } |
492 | |
493 | /** |
494 | * @brief Construct string as copy of a substring. |
495 | * @param __str Source string. |
496 | * @param __pos Index of first character to copy from. |
497 | * @param __n Number of characters to copy. |
498 | * @param __a Allocator to use. |
499 | */ |
500 | basic_string(const basic_string& __str, size_type __pos, |
501 | size_type __n, const _Alloc& __a) |
502 | : _M_dataplus(_M_local_data(), __a) |
503 | { |
504 | const _CharT* __start |
505 | = __str._M_data() + __str._M_check(__pos, "string::string" ); |
506 | _M_construct(__start, __start + __str._M_limit(__pos, __n)); |
507 | } |
508 | |
509 | /** |
510 | * @brief Construct string initialized by a character %array. |
511 | * @param __s Source character %array. |
512 | * @param __n Number of characters to copy. |
513 | * @param __a Allocator to use (default is default allocator). |
514 | * |
515 | * NB: @a __s must have at least @a __n characters, '\\0' |
516 | * has no special meaning. |
517 | */ |
518 | basic_string(const _CharT* __s, size_type __n, |
519 | const _Alloc& __a = _Alloc()) |
520 | : _M_dataplus(_M_local_data(), __a) |
521 | { _M_construct(__s, __s + __n); } |
522 | |
523 | /** |
524 | * @brief Construct string as copy of a C string. |
525 | * @param __s Source C string. |
526 | * @param __a Allocator to use (default is default allocator). |
527 | */ |
528 | #if __cpp_deduction_guides && ! defined _GLIBCXX_DEFINING_STRING_INSTANTIATIONS |
529 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
530 | // 3076. basic_string CTAD ambiguity |
531 | template<typename = _RequireAllocator<_Alloc>> |
532 | #endif |
533 | basic_string(const _CharT* __s, const _Alloc& __a = _Alloc()) |
534 | : _M_dataplus(_M_local_data(), __a) |
535 | { |
536 | const _CharT* __end = __s ? __s + traits_type::length(__s) |
537 | // We just need a non-null pointer here to get an exception: |
538 | : reinterpret_cast<const _CharT*>(__alignof__(_CharT)); |
539 | _M_construct(__s, __end, random_access_iterator_tag()); |
540 | } |
541 | |
542 | /** |
543 | * @brief Construct string as multiple characters. |
544 | * @param __n Number of characters. |
545 | * @param __c Character to use. |
546 | * @param __a Allocator to use (default is default allocator). |
547 | */ |
548 | #if __cpp_deduction_guides && ! defined _GLIBCXX_DEFINING_STRING_INSTANTIATIONS |
549 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
550 | // 3076. basic_string CTAD ambiguity |
551 | template<typename = _RequireAllocator<_Alloc>> |
552 | #endif |
553 | basic_string(size_type __n, _CharT __c, const _Alloc& __a = _Alloc()) |
554 | : _M_dataplus(_M_local_data(), __a) |
555 | { _M_construct(__n, __c); } |
556 | |
557 | #if __cplusplus >= 201103L |
558 | /** |
559 | * @brief Move construct string. |
560 | * @param __str Source string. |
561 | * |
562 | * The newly-created string contains the exact contents of @a __str. |
563 | * @a __str is a valid, but unspecified string. |
564 | */ |
565 | basic_string(basic_string&& __str) noexcept |
566 | : _M_dataplus(_M_local_data(), std::move(__str._M_get_allocator())) |
567 | { |
568 | if (__str._M_is_local()) |
569 | { |
570 | traits_type::copy(_M_local_buf, __str._M_local_buf, |
571 | _S_local_capacity + 1); |
572 | } |
573 | else |
574 | { |
575 | _M_data(__str._M_data()); |
576 | _M_capacity(capacity: __str._M_allocated_capacity); |
577 | } |
578 | |
579 | // Must use _M_length() here not _M_set_length() because |
580 | // basic_stringbuf relies on writing into unallocated capacity so |
581 | // we mess up the contents if we put a '\0' in the string. |
582 | _M_length(length: __str.length()); |
583 | __str._M_data(__str._M_local_data()); |
584 | __str._M_set_length(0); |
585 | } |
586 | |
587 | /** |
588 | * @brief Construct string from an initializer %list. |
589 | * @param __l std::initializer_list of characters. |
590 | * @param __a Allocator to use (default is default allocator). |
591 | */ |
592 | basic_string(initializer_list<_CharT> __l, const _Alloc& __a = _Alloc()) |
593 | : _M_dataplus(_M_local_data(), __a) |
594 | { _M_construct(__l.begin(), __l.end()); } |
595 | |
596 | basic_string(const basic_string& __str, const _Alloc& __a) |
597 | : _M_dataplus(_M_local_data(), __a) |
598 | { _M_construct(__str.begin(), __str.end()); } |
599 | |
600 | basic_string(basic_string&& __str, const _Alloc& __a) |
601 | noexcept(_Alloc_traits::_S_always_equal()) |
602 | : _M_dataplus(_M_local_data(), __a) |
603 | { |
604 | if (__str._M_is_local()) |
605 | { |
606 | traits_type::copy(_M_local_buf, __str._M_local_buf, |
607 | _S_local_capacity + 1); |
608 | _M_length(length: __str.length()); |
609 | __str._M_set_length(0); |
610 | } |
611 | else if (_Alloc_traits::_S_always_equal() |
612 | || __str.get_allocator() == __a) |
613 | { |
614 | _M_data(__str._M_data()); |
615 | _M_length(length: __str.length()); |
616 | _M_capacity(capacity: __str._M_allocated_capacity); |
617 | __str._M_data(__str._M_local_buf); |
618 | __str._M_set_length(0); |
619 | } |
620 | else |
621 | _M_construct(__str.begin(), __str.end()); |
622 | } |
623 | |
624 | #endif // C++11 |
625 | |
626 | /** |
627 | * @brief Construct string as copy of a range. |
628 | * @param __beg Start of range. |
629 | * @param __end End of range. |
630 | * @param __a Allocator to use (default is default allocator). |
631 | */ |
632 | #if __cplusplus >= 201103L |
633 | template<typename _InputIterator, |
634 | typename = std::_RequireInputIter<_InputIterator>> |
635 | #else |
636 | template<typename _InputIterator> |
637 | #endif |
638 | basic_string(_InputIterator __beg, _InputIterator __end, |
639 | const _Alloc& __a = _Alloc()) |
640 | : _M_dataplus(_M_local_data(), __a) |
641 | { _M_construct(__beg, __end); } |
642 | |
643 | #if __cplusplus >= 201703L |
644 | /** |
645 | * @brief Construct string from a substring of a string_view. |
646 | * @param __t Source object convertible to string view. |
647 | * @param __pos The index of the first character to copy from __t. |
648 | * @param __n The number of characters to copy from __t. |
649 | * @param __a Allocator to use. |
650 | */ |
651 | template<typename _Tp, |
652 | typename = enable_if_t<is_convertible_v<const _Tp&, __sv_type>>> |
653 | basic_string(const _Tp& __t, size_type __pos, size_type __n, |
654 | const _Alloc& __a = _Alloc()) |
655 | : basic_string(_S_to_string_view(svt: __t).substr(__pos, __n), __a) { } |
656 | |
657 | /** |
658 | * @brief Construct string from a string_view. |
659 | * @param __t Source object convertible to string view. |
660 | * @param __a Allocator to use (default is default allocator). |
661 | */ |
662 | template<typename _Tp, typename = _If_sv<_Tp, void>> |
663 | explicit |
664 | basic_string(const _Tp& __t, const _Alloc& __a = _Alloc()) |
665 | : basic_string(__sv_wrapper(_S_to_string_view(svt: __t)), __a) { } |
666 | #endif // C++17 |
667 | |
668 | /** |
669 | * @brief Destroy the string instance. |
670 | */ |
671 | ~basic_string() |
672 | { _M_dispose(); } |
673 | |
674 | /** |
675 | * @brief Assign the value of @a str to this string. |
676 | * @param __str Source string. |
677 | */ |
678 | basic_string& |
679 | operator=(const basic_string& __str) |
680 | { |
681 | return this->assign(__str); |
682 | } |
683 | |
684 | /** |
685 | * @brief Copy contents of @a s into this string. |
686 | * @param __s Source null-terminated string. |
687 | */ |
688 | basic_string& |
689 | operator=(const _CharT* __s) |
690 | { return this->assign(__s); } |
691 | |
692 | /** |
693 | * @brief Set value to string of length 1. |
694 | * @param __c Source character. |
695 | * |
696 | * Assigning to a character makes this string length 1 and |
697 | * (*this)[0] == @a c. |
698 | */ |
699 | basic_string& |
700 | operator=(_CharT __c) |
701 | { |
702 | this->assign(1, __c); |
703 | return *this; |
704 | } |
705 | |
706 | #if __cplusplus >= 201103L |
707 | /** |
708 | * @brief Move assign the value of @a str to this string. |
709 | * @param __str Source string. |
710 | * |
711 | * The contents of @a str are moved into this string (without copying). |
712 | * @a str is a valid, but unspecified string. |
713 | */ |
714 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
715 | // 2063. Contradictory requirements for string move assignment |
716 | basic_string& |
717 | operator=(basic_string&& __str) |
718 | noexcept(_Alloc_traits::_S_nothrow_move()) |
719 | { |
720 | if (!_M_is_local() && _Alloc_traits::_S_propagate_on_move_assign() |
721 | && !_Alloc_traits::_S_always_equal() |
722 | && _M_get_allocator() != __str._M_get_allocator()) |
723 | { |
724 | // Destroy existing storage before replacing allocator. |
725 | _M_destroy(size: _M_allocated_capacity); |
726 | _M_data(_M_local_data()); |
727 | _M_set_length(n: 0); |
728 | } |
729 | // Replace allocator if POCMA is true. |
730 | std::__alloc_on_move(_M_get_allocator(), __str._M_get_allocator()); |
731 | |
732 | if (__str._M_is_local()) |
733 | { |
734 | // We've always got room for a short string, just copy it |
735 | // (unless this is a self-move, because that would violate the |
736 | // char_traits::copy precondition that the ranges don't overlap). |
737 | if (__builtin_expect(std::__addressof(__str) != this, true)) |
738 | { |
739 | if (__str.size()) |
740 | this->_S_copy(_M_data(), __str._M_data(), __str.size()); |
741 | _M_set_length(n: __str.size()); |
742 | } |
743 | } |
744 | else if (_Alloc_traits::_S_propagate_on_move_assign() |
745 | || _Alloc_traits::_S_always_equal() |
746 | || _M_get_allocator() == __str._M_get_allocator()) |
747 | { |
748 | // Just move the allocated pointer, our allocator can free it. |
749 | pointer __data = nullptr; |
750 | size_type __capacity; |
751 | if (!_M_is_local()) |
752 | { |
753 | if (_Alloc_traits::_S_always_equal()) |
754 | { |
755 | // __str can reuse our existing storage. |
756 | __data = _M_data(); |
757 | __capacity = _M_allocated_capacity; |
758 | } |
759 | else // __str can't use it, so free it. |
760 | _M_destroy(size: _M_allocated_capacity); |
761 | } |
762 | |
763 | _M_data(__str._M_data()); |
764 | _M_length(length: __str.length()); |
765 | _M_capacity(capacity: __str._M_allocated_capacity); |
766 | if (__data) |
767 | { |
768 | __str._M_data(__data); |
769 | __str._M_capacity(__capacity); |
770 | } |
771 | else |
772 | __str._M_data(__str._M_local_buf); |
773 | } |
774 | else // Need to do a deep copy |
775 | assign(__str); |
776 | __str.clear(); |
777 | return *this; |
778 | } |
779 | |
780 | /** |
781 | * @brief Set value to string constructed from initializer %list. |
782 | * @param __l std::initializer_list. |
783 | */ |
784 | basic_string& |
785 | operator=(initializer_list<_CharT> __l) |
786 | { |
787 | this->assign(__l.begin(), __l.size()); |
788 | return *this; |
789 | } |
790 | #endif // C++11 |
791 | |
792 | #if __cplusplus >= 201703L |
793 | /** |
794 | * @brief Set value to string constructed from a string_view. |
795 | * @param __svt An object convertible to string_view. |
796 | */ |
797 | template<typename _Tp> |
798 | _If_sv<_Tp, basic_string&> |
799 | operator=(const _Tp& __svt) |
800 | { return this->assign(__svt); } |
801 | |
802 | /** |
803 | * @brief Convert to a string_view. |
804 | * @return A string_view. |
805 | */ |
806 | operator __sv_type() const noexcept |
807 | { return __sv_type(data(), size()); } |
808 | #endif // C++17 |
809 | |
810 | // Iterators: |
811 | /** |
812 | * Returns a read/write iterator that points to the first character in |
813 | * the %string. |
814 | */ |
815 | iterator |
816 | begin() _GLIBCXX_NOEXCEPT |
817 | { return iterator(_M_data()); } |
818 | |
819 | /** |
820 | * Returns a read-only (constant) iterator that points to the first |
821 | * character in the %string. |
822 | */ |
823 | const_iterator |
824 | begin() const _GLIBCXX_NOEXCEPT |
825 | { return const_iterator(_M_data()); } |
826 | |
827 | /** |
828 | * Returns a read/write iterator that points one past the last |
829 | * character in the %string. |
830 | */ |
831 | iterator |
832 | end() _GLIBCXX_NOEXCEPT |
833 | { return iterator(_M_data() + this->size()); } |
834 | |
835 | /** |
836 | * Returns a read-only (constant) iterator that points one past the |
837 | * last character in the %string. |
838 | */ |
839 | const_iterator |
840 | end() const _GLIBCXX_NOEXCEPT |
841 | { return const_iterator(_M_data() + this->size()); } |
842 | |
843 | /** |
844 | * Returns a read/write reverse iterator that points to the last |
845 | * character in the %string. Iteration is done in reverse element |
846 | * order. |
847 | */ |
848 | reverse_iterator |
849 | rbegin() _GLIBCXX_NOEXCEPT |
850 | { return reverse_iterator(this->end()); } |
851 | |
852 | /** |
853 | * Returns a read-only (constant) reverse iterator that points |
854 | * to the last character in the %string. Iteration is done in |
855 | * reverse element order. |
856 | */ |
857 | const_reverse_iterator |
858 | rbegin() const _GLIBCXX_NOEXCEPT |
859 | { return const_reverse_iterator(this->end()); } |
860 | |
861 | /** |
862 | * Returns a read/write reverse iterator that points to one before the |
863 | * first character in the %string. Iteration is done in reverse |
864 | * element order. |
865 | */ |
866 | reverse_iterator |
867 | rend() _GLIBCXX_NOEXCEPT |
868 | { return reverse_iterator(this->begin()); } |
869 | |
870 | /** |
871 | * Returns a read-only (constant) reverse iterator that points |
872 | * to one before the first character in the %string. Iteration |
873 | * is done in reverse element order. |
874 | */ |
875 | const_reverse_iterator |
876 | rend() const _GLIBCXX_NOEXCEPT |
877 | { return const_reverse_iterator(this->begin()); } |
878 | |
879 | #if __cplusplus >= 201103L |
880 | /** |
881 | * Returns a read-only (constant) iterator that points to the first |
882 | * character in the %string. |
883 | */ |
884 | const_iterator |
885 | cbegin() const noexcept |
886 | { return const_iterator(this->_M_data()); } |
887 | |
888 | /** |
889 | * Returns a read-only (constant) iterator that points one past the |
890 | * last character in the %string. |
891 | */ |
892 | const_iterator |
893 | cend() const noexcept |
894 | { return const_iterator(this->_M_data() + this->size()); } |
895 | |
896 | /** |
897 | * Returns a read-only (constant) reverse iterator that points |
898 | * to the last character in the %string. Iteration is done in |
899 | * reverse element order. |
900 | */ |
901 | const_reverse_iterator |
902 | crbegin() const noexcept |
903 | { return const_reverse_iterator(this->end()); } |
904 | |
905 | /** |
906 | * Returns a read-only (constant) reverse iterator that points |
907 | * to one before the first character in the %string. Iteration |
908 | * is done in reverse element order. |
909 | */ |
910 | const_reverse_iterator |
911 | crend() const noexcept |
912 | { return const_reverse_iterator(this->begin()); } |
913 | #endif |
914 | |
915 | public: |
916 | // Capacity: |
917 | /// Returns the number of characters in the string, not including any |
918 | /// null-termination. |
919 | size_type |
920 | size() const _GLIBCXX_NOEXCEPT |
921 | { return _M_string_length; } |
922 | |
923 | /// Returns the number of characters in the string, not including any |
924 | /// null-termination. |
925 | size_type |
926 | length() const _GLIBCXX_NOEXCEPT |
927 | { return _M_string_length; } |
928 | |
929 | /// Returns the size() of the largest possible %string. |
930 | size_type |
931 | max_size() const _GLIBCXX_NOEXCEPT |
932 | { return (_Alloc_traits::max_size(_M_get_allocator()) - 1) / 2; } |
933 | |
934 | /** |
935 | * @brief Resizes the %string to the specified number of characters. |
936 | * @param __n Number of characters the %string should contain. |
937 | * @param __c Character to fill any new elements. |
938 | * |
939 | * This function will %resize the %string to the specified |
940 | * number of characters. If the number is smaller than the |
941 | * %string's current size the %string is truncated, otherwise |
942 | * the %string is extended and new elements are %set to @a __c. |
943 | */ |
944 | void |
945 | resize(size_type __n, _CharT __c); |
946 | |
947 | /** |
948 | * @brief Resizes the %string to the specified number of characters. |
949 | * @param __n Number of characters the %string should contain. |
950 | * |
951 | * This function will resize the %string to the specified length. If |
952 | * the new size is smaller than the %string's current size the %string |
953 | * is truncated, otherwise the %string is extended and new characters |
954 | * are default-constructed. For basic types such as char, this means |
955 | * setting them to 0. |
956 | */ |
957 | void |
958 | resize(size_type __n) |
959 | { this->resize(__n, _CharT()); } |
960 | |
961 | #if __cplusplus >= 201103L |
962 | #pragma GCC diagnostic push |
963 | #pragma GCC diagnostic ignored "-Wdeprecated-declarations" |
964 | /// A non-binding request to reduce capacity() to size(). |
965 | void |
966 | shrink_to_fit() noexcept |
967 | { reserve(); } |
968 | #pragma GCC diagnostic pop |
969 | #endif |
970 | |
971 | /** |
972 | * Returns the total number of characters that the %string can hold |
973 | * before needing to allocate more memory. |
974 | */ |
975 | size_type |
976 | capacity() const _GLIBCXX_NOEXCEPT |
977 | { |
978 | return _M_is_local() ? size_type(_S_local_capacity) |
979 | : _M_allocated_capacity; |
980 | } |
981 | |
982 | /** |
983 | * @brief Attempt to preallocate enough memory for specified number of |
984 | * characters. |
985 | * @param __res_arg Number of characters required. |
986 | * @throw std::length_error If @a __res_arg exceeds @c max_size(). |
987 | * |
988 | * This function attempts to reserve enough memory for the |
989 | * %string to hold the specified number of characters. If the |
990 | * number requested is more than max_size(), length_error is |
991 | * thrown. |
992 | * |
993 | * The advantage of this function is that if optimal code is a |
994 | * necessity and the user can determine the string length that will be |
995 | * required, the user can reserve the memory in %advance, and thus |
996 | * prevent a possible reallocation of memory and copying of %string |
997 | * data. |
998 | */ |
999 | void |
1000 | reserve(size_type __res_arg); |
1001 | |
1002 | /** |
1003 | * Equivalent to shrink_to_fit(). |
1004 | */ |
1005 | #if __cplusplus > 201703L |
1006 | [[deprecated("use shrink_to_fit() instead" )]] |
1007 | #endif |
1008 | void |
1009 | reserve(); |
1010 | |
1011 | /** |
1012 | * Erases the string, making it empty. |
1013 | */ |
1014 | void |
1015 | clear() _GLIBCXX_NOEXCEPT |
1016 | { _M_set_length(n: 0); } |
1017 | |
1018 | /** |
1019 | * Returns true if the %string is empty. Equivalent to |
1020 | * <code>*this == ""</code>. |
1021 | */ |
1022 | _GLIBCXX_NODISCARD bool |
1023 | empty() const _GLIBCXX_NOEXCEPT |
1024 | { return this->size() == 0; } |
1025 | |
1026 | // Element access: |
1027 | /** |
1028 | * @brief Subscript access to the data contained in the %string. |
1029 | * @param __pos The index of the character to access. |
1030 | * @return Read-only (constant) reference to the character. |
1031 | * |
1032 | * This operator allows for easy, array-style, data access. |
1033 | * Note that data access with this operator is unchecked and |
1034 | * out_of_range lookups are not defined. (For checked lookups |
1035 | * see at().) |
1036 | */ |
1037 | const_reference |
1038 | operator[] (size_type __pos) const _GLIBCXX_NOEXCEPT |
1039 | { |
1040 | __glibcxx_assert(__pos <= size()); |
1041 | return _M_data()[__pos]; |
1042 | } |
1043 | |
1044 | /** |
1045 | * @brief Subscript access to the data contained in the %string. |
1046 | * @param __pos The index of the character to access. |
1047 | * @return Read/write reference to the character. |
1048 | * |
1049 | * This operator allows for easy, array-style, data access. |
1050 | * Note that data access with this operator is unchecked and |
1051 | * out_of_range lookups are not defined. (For checked lookups |
1052 | * see at().) |
1053 | */ |
1054 | reference |
1055 | operator[](size_type __pos) |
1056 | { |
1057 | // Allow pos == size() both in C++98 mode, as v3 extension, |
1058 | // and in C++11 mode. |
1059 | __glibcxx_assert(__pos <= size()); |
1060 | // In pedantic mode be strict in C++98 mode. |
1061 | _GLIBCXX_DEBUG_PEDASSERT(__cplusplus >= 201103L || __pos < size()); |
1062 | return _M_data()[__pos]; |
1063 | } |
1064 | |
1065 | /** |
1066 | * @brief Provides access to the data contained in the %string. |
1067 | * @param __n The index of the character to access. |
1068 | * @return Read-only (const) reference to the character. |
1069 | * @throw std::out_of_range If @a n is an invalid index. |
1070 | * |
1071 | * This function provides for safer data access. The parameter is |
1072 | * first checked that it is in the range of the string. The function |
1073 | * throws out_of_range if the check fails. |
1074 | */ |
1075 | const_reference |
1076 | at(size_type __n) const |
1077 | { |
1078 | if (__n >= this->size()) |
1079 | __throw_out_of_range_fmt(__N("basic_string::at: __n " |
1080 | "(which is %zu) >= this->size() " |
1081 | "(which is %zu)" ), |
1082 | __n, this->size()); |
1083 | return _M_data()[__n]; |
1084 | } |
1085 | |
1086 | /** |
1087 | * @brief Provides access to the data contained in the %string. |
1088 | * @param __n The index of the character to access. |
1089 | * @return Read/write reference to the character. |
1090 | * @throw std::out_of_range If @a n is an invalid index. |
1091 | * |
1092 | * This function provides for safer data access. The parameter is |
1093 | * first checked that it is in the range of the string. The function |
1094 | * throws out_of_range if the check fails. |
1095 | */ |
1096 | reference |
1097 | at(size_type __n) |
1098 | { |
1099 | if (__n >= size()) |
1100 | __throw_out_of_range_fmt(__N("basic_string::at: __n " |
1101 | "(which is %zu) >= this->size() " |
1102 | "(which is %zu)" ), |
1103 | __n, this->size()); |
1104 | return _M_data()[__n]; |
1105 | } |
1106 | |
1107 | #if __cplusplus >= 201103L |
1108 | /** |
1109 | * Returns a read/write reference to the data at the first |
1110 | * element of the %string. |
1111 | */ |
1112 | reference |
1113 | front() noexcept |
1114 | { |
1115 | __glibcxx_assert(!empty()); |
1116 | return operator[](0); |
1117 | } |
1118 | |
1119 | /** |
1120 | * Returns a read-only (constant) reference to the data at the first |
1121 | * element of the %string. |
1122 | */ |
1123 | const_reference |
1124 | front() const noexcept |
1125 | { |
1126 | __glibcxx_assert(!empty()); |
1127 | return operator[](0); |
1128 | } |
1129 | |
1130 | /** |
1131 | * Returns a read/write reference to the data at the last |
1132 | * element of the %string. |
1133 | */ |
1134 | reference |
1135 | back() noexcept |
1136 | { |
1137 | __glibcxx_assert(!empty()); |
1138 | return operator[](this->size() - 1); |
1139 | } |
1140 | |
1141 | /** |
1142 | * Returns a read-only (constant) reference to the data at the |
1143 | * last element of the %string. |
1144 | */ |
1145 | const_reference |
1146 | back() const noexcept |
1147 | { |
1148 | __glibcxx_assert(!empty()); |
1149 | return operator[](this->size() - 1); |
1150 | } |
1151 | #endif |
1152 | |
1153 | // Modifiers: |
1154 | /** |
1155 | * @brief Append a string to this string. |
1156 | * @param __str The string to append. |
1157 | * @return Reference to this string. |
1158 | */ |
1159 | basic_string& |
1160 | operator+=(const basic_string& __str) |
1161 | { return this->append(__str); } |
1162 | |
1163 | /** |
1164 | * @brief Append a C string. |
1165 | * @param __s The C string to append. |
1166 | * @return Reference to this string. |
1167 | */ |
1168 | basic_string& |
1169 | operator+=(const _CharT* __s) |
1170 | { return this->append(__s); } |
1171 | |
1172 | /** |
1173 | * @brief Append a character. |
1174 | * @param __c The character to append. |
1175 | * @return Reference to this string. |
1176 | */ |
1177 | basic_string& |
1178 | operator+=(_CharT __c) |
1179 | { |
1180 | this->push_back(__c); |
1181 | return *this; |
1182 | } |
1183 | |
1184 | #if __cplusplus >= 201103L |
1185 | /** |
1186 | * @brief Append an initializer_list of characters. |
1187 | * @param __l The initializer_list of characters to be appended. |
1188 | * @return Reference to this string. |
1189 | */ |
1190 | basic_string& |
1191 | operator+=(initializer_list<_CharT> __l) |
1192 | { return this->append(__l.begin(), __l.size()); } |
1193 | #endif // C++11 |
1194 | |
1195 | #if __cplusplus >= 201703L |
1196 | /** |
1197 | * @brief Append a string_view. |
1198 | * @param __svt An object convertible to string_view to be appended. |
1199 | * @return Reference to this string. |
1200 | */ |
1201 | template<typename _Tp> |
1202 | _If_sv<_Tp, basic_string&> |
1203 | operator+=(const _Tp& __svt) |
1204 | { return this->append(__svt); } |
1205 | #endif // C++17 |
1206 | |
1207 | /** |
1208 | * @brief Append a string to this string. |
1209 | * @param __str The string to append. |
1210 | * @return Reference to this string. |
1211 | */ |
1212 | basic_string& |
1213 | append(const basic_string& __str) |
1214 | { return _M_append(s: __str._M_data(), n: __str.size()); } |
1215 | |
1216 | /** |
1217 | * @brief Append a substring. |
1218 | * @param __str The string to append. |
1219 | * @param __pos Index of the first character of str to append. |
1220 | * @param __n The number of characters to append. |
1221 | * @return Reference to this string. |
1222 | * @throw std::out_of_range if @a __pos is not a valid index. |
1223 | * |
1224 | * This function appends @a __n characters from @a __str |
1225 | * starting at @a __pos to this string. If @a __n is is larger |
1226 | * than the number of available characters in @a __str, the |
1227 | * remainder of @a __str is appended. |
1228 | */ |
1229 | basic_string& |
1230 | append(const basic_string& __str, size_type __pos, size_type __n = npos) |
1231 | { return _M_append(s: __str._M_data() |
1232 | + __str._M_check(__pos, "basic_string::append" ), |
1233 | n: __str._M_limit(__pos, __n)); } |
1234 | |
1235 | /** |
1236 | * @brief Append a C substring. |
1237 | * @param __s The C string to append. |
1238 | * @param __n The number of characters to append. |
1239 | * @return Reference to this string. |
1240 | */ |
1241 | basic_string& |
1242 | append(const _CharT* __s, size_type __n) |
1243 | { |
1244 | __glibcxx_requires_string_len(__s, __n); |
1245 | _M_check_length(n1: size_type(0), n2: __n, s: "basic_string::append" ); |
1246 | return _M_append(__s, __n); |
1247 | } |
1248 | |
1249 | /** |
1250 | * @brief Append a C string. |
1251 | * @param __s The C string to append. |
1252 | * @return Reference to this string. |
1253 | */ |
1254 | basic_string& |
1255 | append(const _CharT* __s) |
1256 | { |
1257 | __glibcxx_requires_string(__s); |
1258 | const size_type __n = traits_type::length(__s); |
1259 | _M_check_length(n1: size_type(0), n2: __n, s: "basic_string::append" ); |
1260 | return _M_append(__s, __n); |
1261 | } |
1262 | |
1263 | /** |
1264 | * @brief Append multiple characters. |
1265 | * @param __n The number of characters to append. |
1266 | * @param __c The character to use. |
1267 | * @return Reference to this string. |
1268 | * |
1269 | * Appends __n copies of __c to this string. |
1270 | */ |
1271 | basic_string& |
1272 | append(size_type __n, _CharT __c) |
1273 | { return _M_replace_aux(pos1: this->size(), n1: size_type(0), n2: __n, __c); } |
1274 | |
1275 | #if __cplusplus >= 201103L |
1276 | /** |
1277 | * @brief Append an initializer_list of characters. |
1278 | * @param __l The initializer_list of characters to append. |
1279 | * @return Reference to this string. |
1280 | */ |
1281 | basic_string& |
1282 | append(initializer_list<_CharT> __l) |
1283 | { return this->append(__l.begin(), __l.size()); } |
1284 | #endif // C++11 |
1285 | |
1286 | /** |
1287 | * @brief Append a range of characters. |
1288 | * @param __first Iterator referencing the first character to append. |
1289 | * @param __last Iterator marking the end of the range. |
1290 | * @return Reference to this string. |
1291 | * |
1292 | * Appends characters in the range [__first,__last) to this string. |
1293 | */ |
1294 | #if __cplusplus >= 201103L |
1295 | template<class _InputIterator, |
1296 | typename = std::_RequireInputIter<_InputIterator>> |
1297 | #else |
1298 | template<class _InputIterator> |
1299 | #endif |
1300 | basic_string& |
1301 | append(_InputIterator __first, _InputIterator __last) |
1302 | { return this->replace(end(), end(), __first, __last); } |
1303 | |
1304 | #if __cplusplus >= 201703L |
1305 | /** |
1306 | * @brief Append a string_view. |
1307 | * @param __svt An object convertible to string_view to be appended. |
1308 | * @return Reference to this string. |
1309 | */ |
1310 | template<typename _Tp> |
1311 | _If_sv<_Tp, basic_string&> |
1312 | append(const _Tp& __svt) |
1313 | { |
1314 | __sv_type __sv = __svt; |
1315 | return this->append(__sv.data(), __sv.size()); |
1316 | } |
1317 | |
1318 | /** |
1319 | * @brief Append a range of characters from a string_view. |
1320 | * @param __svt An object convertible to string_view to be appended from. |
1321 | * @param __pos The position in the string_view to append from. |
1322 | * @param __n The number of characters to append from the string_view. |
1323 | * @return Reference to this string. |
1324 | */ |
1325 | template<typename _Tp> |
1326 | _If_sv<_Tp, basic_string&> |
1327 | append(const _Tp& __svt, size_type __pos, size_type __n = npos) |
1328 | { |
1329 | __sv_type __sv = __svt; |
1330 | return _M_append(s: __sv.data() |
1331 | + std::__sv_check(size: __sv.size(), __pos, s: "basic_string::append" ), |
1332 | n: std::__sv_limit(size: __sv.size(), __pos, off: __n)); |
1333 | } |
1334 | #endif // C++17 |
1335 | |
1336 | /** |
1337 | * @brief Append a single character. |
1338 | * @param __c Character to append. |
1339 | */ |
1340 | void |
1341 | push_back(_CharT __c) |
1342 | { |
1343 | const size_type __size = this->size(); |
1344 | if (__size + 1 > this->capacity()) |
1345 | this->_M_mutate(__size, size_type(0), 0, size_type(1)); |
1346 | traits_type::assign(this->_M_data()[__size], __c); |
1347 | this->_M_set_length(__size + 1); |
1348 | } |
1349 | |
1350 | /** |
1351 | * @brief Set value to contents of another string. |
1352 | * @param __str Source string to use. |
1353 | * @return Reference to this string. |
1354 | */ |
1355 | basic_string& |
1356 | assign(const basic_string& __str) |
1357 | { |
1358 | #if __cplusplus >= 201103L |
1359 | if (_Alloc_traits::_S_propagate_on_copy_assign()) |
1360 | { |
1361 | if (!_Alloc_traits::_S_always_equal() && !_M_is_local() |
1362 | && _M_get_allocator() != __str._M_get_allocator()) |
1363 | { |
1364 | // Propagating allocator cannot free existing storage so must |
1365 | // deallocate it before replacing current allocator. |
1366 | if (__str.size() <= _S_local_capacity) |
1367 | { |
1368 | _M_destroy(size: _M_allocated_capacity); |
1369 | _M_data(_M_local_data()); |
1370 | _M_set_length(n: 0); |
1371 | } |
1372 | else |
1373 | { |
1374 | const auto __len = __str.size(); |
1375 | auto __alloc = __str._M_get_allocator(); |
1376 | // If this allocation throws there are no effects: |
1377 | auto __ptr = _Alloc_traits::allocate(__alloc, __len + 1); |
1378 | _M_destroy(size: _M_allocated_capacity); |
1379 | _M_data(__ptr); |
1380 | _M_capacity(capacity: __len); |
1381 | _M_set_length(n: __len); |
1382 | } |
1383 | } |
1384 | std::__alloc_on_copy(_M_get_allocator(), __str._M_get_allocator()); |
1385 | } |
1386 | #endif |
1387 | this->_M_assign(__str); |
1388 | return *this; |
1389 | } |
1390 | |
1391 | #if __cplusplus >= 201103L |
1392 | /** |
1393 | * @brief Set value to contents of another string. |
1394 | * @param __str Source string to use. |
1395 | * @return Reference to this string. |
1396 | * |
1397 | * This function sets this string to the exact contents of @a __str. |
1398 | * @a __str is a valid, but unspecified string. |
1399 | */ |
1400 | basic_string& |
1401 | assign(basic_string&& __str) |
1402 | noexcept(_Alloc_traits::_S_nothrow_move()) |
1403 | { |
1404 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
1405 | // 2063. Contradictory requirements for string move assignment |
1406 | return *this = std::move(__str); |
1407 | } |
1408 | #endif // C++11 |
1409 | |
1410 | /** |
1411 | * @brief Set value to a substring of a string. |
1412 | * @param __str The string to use. |
1413 | * @param __pos Index of the first character of str. |
1414 | * @param __n Number of characters to use. |
1415 | * @return Reference to this string. |
1416 | * @throw std::out_of_range if @a pos is not a valid index. |
1417 | * |
1418 | * This function sets this string to the substring of @a __str |
1419 | * consisting of @a __n characters at @a __pos. If @a __n is |
1420 | * is larger than the number of available characters in @a |
1421 | * __str, the remainder of @a __str is used. |
1422 | */ |
1423 | basic_string& |
1424 | assign(const basic_string& __str, size_type __pos, size_type __n = npos) |
1425 | { return _M_replace(pos: size_type(0), len1: this->size(), s: __str._M_data() |
1426 | + __str._M_check(__pos, "basic_string::assign" ), |
1427 | len2: __str._M_limit(__pos, __n)); } |
1428 | |
1429 | /** |
1430 | * @brief Set value to a C substring. |
1431 | * @param __s The C string to use. |
1432 | * @param __n Number of characters to use. |
1433 | * @return Reference to this string. |
1434 | * |
1435 | * This function sets the value of this string to the first @a __n |
1436 | * characters of @a __s. If @a __n is is larger than the number of |
1437 | * available characters in @a __s, the remainder of @a __s is used. |
1438 | */ |
1439 | basic_string& |
1440 | assign(const _CharT* __s, size_type __n) |
1441 | { |
1442 | __glibcxx_requires_string_len(__s, __n); |
1443 | return _M_replace(pos: size_type(0), len1: this->size(), __s, len2: __n); |
1444 | } |
1445 | |
1446 | /** |
1447 | * @brief Set value to contents of a C string. |
1448 | * @param __s The C string to use. |
1449 | * @return Reference to this string. |
1450 | * |
1451 | * This function sets the value of this string to the value of @a __s. |
1452 | * The data is copied, so there is no dependence on @a __s once the |
1453 | * function returns. |
1454 | */ |
1455 | basic_string& |
1456 | assign(const _CharT* __s) |
1457 | { |
1458 | __glibcxx_requires_string(__s); |
1459 | return _M_replace(pos: size_type(0), len1: this->size(), __s, |
1460 | len2: traits_type::length(__s)); |
1461 | } |
1462 | |
1463 | /** |
1464 | * @brief Set value to multiple characters. |
1465 | * @param __n Length of the resulting string. |
1466 | * @param __c The character to use. |
1467 | * @return Reference to this string. |
1468 | * |
1469 | * This function sets the value of this string to @a __n copies of |
1470 | * character @a __c. |
1471 | */ |
1472 | basic_string& |
1473 | assign(size_type __n, _CharT __c) |
1474 | { return _M_replace_aux(pos1: size_type(0), n1: this->size(), n2: __n, __c); } |
1475 | |
1476 | /** |
1477 | * @brief Set value to a range of characters. |
1478 | * @param __first Iterator referencing the first character to append. |
1479 | * @param __last Iterator marking the end of the range. |
1480 | * @return Reference to this string. |
1481 | * |
1482 | * Sets value of string to characters in the range [__first,__last). |
1483 | */ |
1484 | #if __cplusplus >= 201103L |
1485 | template<class _InputIterator, |
1486 | typename = std::_RequireInputIter<_InputIterator>> |
1487 | #else |
1488 | template<class _InputIterator> |
1489 | #endif |
1490 | basic_string& |
1491 | assign(_InputIterator __first, _InputIterator __last) |
1492 | { return this->replace(begin(), end(), __first, __last); } |
1493 | |
1494 | #if __cplusplus >= 201103L |
1495 | /** |
1496 | * @brief Set value to an initializer_list of characters. |
1497 | * @param __l The initializer_list of characters to assign. |
1498 | * @return Reference to this string. |
1499 | */ |
1500 | basic_string& |
1501 | assign(initializer_list<_CharT> __l) |
1502 | { return this->assign(__l.begin(), __l.size()); } |
1503 | #endif // C++11 |
1504 | |
1505 | #if __cplusplus >= 201703L |
1506 | /** |
1507 | * @brief Set value from a string_view. |
1508 | * @param __svt The source object convertible to string_view. |
1509 | * @return Reference to this string. |
1510 | */ |
1511 | template<typename _Tp> |
1512 | _If_sv<_Tp, basic_string&> |
1513 | assign(const _Tp& __svt) |
1514 | { |
1515 | __sv_type __sv = __svt; |
1516 | return this->assign(__sv.data(), __sv.size()); |
1517 | } |
1518 | |
1519 | /** |
1520 | * @brief Set value from a range of characters in a string_view. |
1521 | * @param __svt The source object convertible to string_view. |
1522 | * @param __pos The position in the string_view to assign from. |
1523 | * @param __n The number of characters to assign. |
1524 | * @return Reference to this string. |
1525 | */ |
1526 | template<typename _Tp> |
1527 | _If_sv<_Tp, basic_string&> |
1528 | assign(const _Tp& __svt, size_type __pos, size_type __n = npos) |
1529 | { |
1530 | __sv_type __sv = __svt; |
1531 | return _M_replace(pos: size_type(0), len1: this->size(), |
1532 | s: __sv.data() |
1533 | + std::__sv_check(size: __sv.size(), __pos, s: "basic_string::assign" ), |
1534 | len2: std::__sv_limit(size: __sv.size(), __pos, off: __n)); |
1535 | } |
1536 | #endif // C++17 |
1537 | |
1538 | #if __cplusplus >= 201103L |
1539 | /** |
1540 | * @brief Insert multiple characters. |
1541 | * @param __p Const_iterator referencing location in string to |
1542 | * insert at. |
1543 | * @param __n Number of characters to insert |
1544 | * @param __c The character to insert. |
1545 | * @return Iterator referencing the first inserted char. |
1546 | * @throw std::length_error If new length exceeds @c max_size(). |
1547 | * |
1548 | * Inserts @a __n copies of character @a __c starting at the |
1549 | * position referenced by iterator @a __p. If adding |
1550 | * characters causes the length to exceed max_size(), |
1551 | * length_error is thrown. The value of the string doesn't |
1552 | * change if an error is thrown. |
1553 | */ |
1554 | iterator |
1555 | insert(const_iterator __p, size_type __n, _CharT __c) |
1556 | { |
1557 | _GLIBCXX_DEBUG_PEDASSERT(__p >= begin() && __p <= end()); |
1558 | const size_type __pos = __p - begin(); |
1559 | this->replace(__p, __p, __n, __c); |
1560 | return iterator(this->_M_data() + __pos); |
1561 | } |
1562 | #else |
1563 | /** |
1564 | * @brief Insert multiple characters. |
1565 | * @param __p Iterator referencing location in string to insert at. |
1566 | * @param __n Number of characters to insert |
1567 | * @param __c The character to insert. |
1568 | * @throw std::length_error If new length exceeds @c max_size(). |
1569 | * |
1570 | * Inserts @a __n copies of character @a __c starting at the |
1571 | * position referenced by iterator @a __p. If adding |
1572 | * characters causes the length to exceed max_size(), |
1573 | * length_error is thrown. The value of the string doesn't |
1574 | * change if an error is thrown. |
1575 | */ |
1576 | void |
1577 | insert(iterator __p, size_type __n, _CharT __c) |
1578 | { this->replace(__p, __p, __n, __c); } |
1579 | #endif |
1580 | |
1581 | #if __cplusplus >= 201103L |
1582 | /** |
1583 | * @brief Insert a range of characters. |
1584 | * @param __p Const_iterator referencing location in string to |
1585 | * insert at. |
1586 | * @param __beg Start of range. |
1587 | * @param __end End of range. |
1588 | * @return Iterator referencing the first inserted char. |
1589 | * @throw std::length_error If new length exceeds @c max_size(). |
1590 | * |
1591 | * Inserts characters in range [beg,end). If adding characters |
1592 | * causes the length to exceed max_size(), length_error is |
1593 | * thrown. The value of the string doesn't change if an error |
1594 | * is thrown. |
1595 | */ |
1596 | template<class _InputIterator, |
1597 | typename = std::_RequireInputIter<_InputIterator>> |
1598 | iterator |
1599 | insert(const_iterator __p, _InputIterator __beg, _InputIterator __end) |
1600 | { |
1601 | _GLIBCXX_DEBUG_PEDASSERT(__p >= begin() && __p <= end()); |
1602 | const size_type __pos = __p - begin(); |
1603 | this->replace(__p, __p, __beg, __end); |
1604 | return iterator(this->_M_data() + __pos); |
1605 | } |
1606 | #else |
1607 | /** |
1608 | * @brief Insert a range of characters. |
1609 | * @param __p Iterator referencing location in string to insert at. |
1610 | * @param __beg Start of range. |
1611 | * @param __end End of range. |
1612 | * @throw std::length_error If new length exceeds @c max_size(). |
1613 | * |
1614 | * Inserts characters in range [__beg,__end). If adding |
1615 | * characters causes the length to exceed max_size(), |
1616 | * length_error is thrown. The value of the string doesn't |
1617 | * change if an error is thrown. |
1618 | */ |
1619 | template<class _InputIterator> |
1620 | void |
1621 | insert(iterator __p, _InputIterator __beg, _InputIterator __end) |
1622 | { this->replace(__p, __p, __beg, __end); } |
1623 | #endif |
1624 | |
1625 | #if __cplusplus >= 201103L |
1626 | /** |
1627 | * @brief Insert an initializer_list of characters. |
1628 | * @param __p Iterator referencing location in string to insert at. |
1629 | * @param __l The initializer_list of characters to insert. |
1630 | * @throw std::length_error If new length exceeds @c max_size(). |
1631 | */ |
1632 | iterator |
1633 | insert(const_iterator __p, initializer_list<_CharT> __l) |
1634 | { return this->insert(__p, __l.begin(), __l.end()); } |
1635 | |
1636 | #ifdef _GLIBCXX_DEFINING_STRING_INSTANTIATIONS |
1637 | // See PR libstdc++/83328 |
1638 | void |
1639 | insert(iterator __p, initializer_list<_CharT> __l) |
1640 | { |
1641 | _GLIBCXX_DEBUG_PEDASSERT(__p >= begin() && __p <= end()); |
1642 | this->insert(__p - begin(), __l.begin(), __l.size()); |
1643 | } |
1644 | #endif |
1645 | #endif // C++11 |
1646 | |
1647 | /** |
1648 | * @brief Insert value of a string. |
1649 | * @param __pos1 Position in string to insert at. |
1650 | * @param __str The string to insert. |
1651 | * @return Reference to this string. |
1652 | * @throw std::length_error If new length exceeds @c max_size(). |
1653 | * |
1654 | * Inserts value of @a __str starting at @a __pos1. If adding |
1655 | * characters causes the length to exceed max_size(), |
1656 | * length_error is thrown. The value of the string doesn't |
1657 | * change if an error is thrown. |
1658 | */ |
1659 | basic_string& |
1660 | insert(size_type __pos1, const basic_string& __str) |
1661 | { return this->replace(__pos1, size_type(0), |
1662 | __str._M_data(), __str.size()); } |
1663 | |
1664 | /** |
1665 | * @brief Insert a substring. |
1666 | * @param __pos1 Position in string to insert at. |
1667 | * @param __str The string to insert. |
1668 | * @param __pos2 Start of characters in str to insert. |
1669 | * @param __n Number of characters to insert. |
1670 | * @return Reference to this string. |
1671 | * @throw std::length_error If new length exceeds @c max_size(). |
1672 | * @throw std::out_of_range If @a pos1 > size() or |
1673 | * @a __pos2 > @a str.size(). |
1674 | * |
1675 | * Starting at @a pos1, insert @a __n character of @a __str |
1676 | * beginning with @a __pos2. If adding characters causes the |
1677 | * length to exceed max_size(), length_error is thrown. If @a |
1678 | * __pos1 is beyond the end of this string or @a __pos2 is |
1679 | * beyond the end of @a __str, out_of_range is thrown. The |
1680 | * value of the string doesn't change if an error is thrown. |
1681 | */ |
1682 | basic_string& |
1683 | insert(size_type __pos1, const basic_string& __str, |
1684 | size_type __pos2, size_type __n = npos) |
1685 | { return this->replace(__pos1, size_type(0), __str._M_data() |
1686 | + __str._M_check(__pos2, "basic_string::insert" ), |
1687 | __str._M_limit(__pos2, __n)); } |
1688 | |
1689 | /** |
1690 | * @brief Insert a C substring. |
1691 | * @param __pos Position in string to insert at. |
1692 | * @param __s The C string to insert. |
1693 | * @param __n The number of characters to insert. |
1694 | * @return Reference to this string. |
1695 | * @throw std::length_error If new length exceeds @c max_size(). |
1696 | * @throw std::out_of_range If @a __pos is beyond the end of this |
1697 | * string. |
1698 | * |
1699 | * Inserts the first @a __n characters of @a __s starting at @a |
1700 | * __pos. If adding characters causes the length to exceed |
1701 | * max_size(), length_error is thrown. If @a __pos is beyond |
1702 | * end(), out_of_range is thrown. The value of the string |
1703 | * doesn't change if an error is thrown. |
1704 | */ |
1705 | basic_string& |
1706 | insert(size_type __pos, const _CharT* __s, size_type __n) |
1707 | { return this->replace(__pos, size_type(0), __s, __n); } |
1708 | |
1709 | /** |
1710 | * @brief Insert a C string. |
1711 | * @param __pos Position in string to insert at. |
1712 | * @param __s The C string to insert. |
1713 | * @return Reference to this string. |
1714 | * @throw std::length_error If new length exceeds @c max_size(). |
1715 | * @throw std::out_of_range If @a pos is beyond the end of this |
1716 | * string. |
1717 | * |
1718 | * Inserts the first @a n characters of @a __s starting at @a __pos. If |
1719 | * adding characters causes the length to exceed max_size(), |
1720 | * length_error is thrown. If @a __pos is beyond end(), out_of_range is |
1721 | * thrown. The value of the string doesn't change if an error is |
1722 | * thrown. |
1723 | */ |
1724 | basic_string& |
1725 | insert(size_type __pos, const _CharT* __s) |
1726 | { |
1727 | __glibcxx_requires_string(__s); |
1728 | return this->replace(__pos, size_type(0), __s, |
1729 | traits_type::length(__s)); |
1730 | } |
1731 | |
1732 | /** |
1733 | * @brief Insert multiple characters. |
1734 | * @param __pos Index in string to insert at. |
1735 | * @param __n Number of characters to insert |
1736 | * @param __c The character to insert. |
1737 | * @return Reference to this string. |
1738 | * @throw std::length_error If new length exceeds @c max_size(). |
1739 | * @throw std::out_of_range If @a __pos is beyond the end of this |
1740 | * string. |
1741 | * |
1742 | * Inserts @a __n copies of character @a __c starting at index |
1743 | * @a __pos. If adding characters causes the length to exceed |
1744 | * max_size(), length_error is thrown. If @a __pos > length(), |
1745 | * out_of_range is thrown. The value of the string doesn't |
1746 | * change if an error is thrown. |
1747 | */ |
1748 | basic_string& |
1749 | insert(size_type __pos, size_type __n, _CharT __c) |
1750 | { return _M_replace_aux(pos1: _M_check(__pos, s: "basic_string::insert" ), |
1751 | n1: size_type(0), n2: __n, __c); } |
1752 | |
1753 | /** |
1754 | * @brief Insert one character. |
1755 | * @param __p Iterator referencing position in string to insert at. |
1756 | * @param __c The character to insert. |
1757 | * @return Iterator referencing newly inserted char. |
1758 | * @throw std::length_error If new length exceeds @c max_size(). |
1759 | * |
1760 | * Inserts character @a __c at position referenced by @a __p. |
1761 | * If adding character causes the length to exceed max_size(), |
1762 | * length_error is thrown. If @a __p is beyond end of string, |
1763 | * out_of_range is thrown. The value of the string doesn't |
1764 | * change if an error is thrown. |
1765 | */ |
1766 | iterator |
1767 | insert(__const_iterator __p, _CharT __c) |
1768 | { |
1769 | _GLIBCXX_DEBUG_PEDASSERT(__p >= begin() && __p <= end()); |
1770 | const size_type __pos = __p - begin(); |
1771 | _M_replace_aux(pos1: __pos, n1: size_type(0), n2: size_type(1), __c); |
1772 | return iterator(_M_data() + __pos); |
1773 | } |
1774 | |
1775 | #if __cplusplus >= 201703L |
1776 | /** |
1777 | * @brief Insert a string_view. |
1778 | * @param __pos Position in string to insert at. |
1779 | * @param __svt The object convertible to string_view to insert. |
1780 | * @return Reference to this string. |
1781 | */ |
1782 | template<typename _Tp> |
1783 | _If_sv<_Tp, basic_string&> |
1784 | insert(size_type __pos, const _Tp& __svt) |
1785 | { |
1786 | __sv_type __sv = __svt; |
1787 | return this->insert(__pos, __sv.data(), __sv.size()); |
1788 | } |
1789 | |
1790 | /** |
1791 | * @brief Insert a string_view. |
1792 | * @param __pos1 Position in string to insert at. |
1793 | * @param __svt The object convertible to string_view to insert from. |
1794 | * @param __pos2 Start of characters in str to insert. |
1795 | * @param __n The number of characters to insert. |
1796 | * @return Reference to this string. |
1797 | */ |
1798 | template<typename _Tp> |
1799 | _If_sv<_Tp, basic_string&> |
1800 | insert(size_type __pos1, const _Tp& __svt, |
1801 | size_type __pos2, size_type __n = npos) |
1802 | { |
1803 | __sv_type __sv = __svt; |
1804 | return this->replace(__pos1, size_type(0), |
1805 | __sv.data() |
1806 | + std::__sv_check(size: __sv.size(), pos: __pos2, s: "basic_string::insert" ), |
1807 | std::__sv_limit(size: __sv.size(), pos: __pos2, off: __n)); |
1808 | } |
1809 | #endif // C++17 |
1810 | |
1811 | /** |
1812 | * @brief Remove characters. |
1813 | * @param __pos Index of first character to remove (default 0). |
1814 | * @param __n Number of characters to remove (default remainder). |
1815 | * @return Reference to this string. |
1816 | * @throw std::out_of_range If @a pos is beyond the end of this |
1817 | * string. |
1818 | * |
1819 | * Removes @a __n characters from this string starting at @a |
1820 | * __pos. The length of the string is reduced by @a __n. If |
1821 | * there are < @a __n characters to remove, the remainder of |
1822 | * the string is truncated. If @a __p is beyond end of string, |
1823 | * out_of_range is thrown. The value of the string doesn't |
1824 | * change if an error is thrown. |
1825 | */ |
1826 | basic_string& |
1827 | erase(size_type __pos = 0, size_type __n = npos) |
1828 | { |
1829 | _M_check(__pos, s: "basic_string::erase" ); |
1830 | if (__n == npos) |
1831 | this->_M_set_length(__pos); |
1832 | else if (__n != 0) |
1833 | this->_M_erase(__pos, _M_limit(__pos, off: __n)); |
1834 | return *this; |
1835 | } |
1836 | |
1837 | /** |
1838 | * @brief Remove one character. |
1839 | * @param __position Iterator referencing the character to remove. |
1840 | * @return iterator referencing same location after removal. |
1841 | * |
1842 | * Removes the character at @a __position from this string. The value |
1843 | * of the string doesn't change if an error is thrown. |
1844 | */ |
1845 | iterator |
1846 | erase(__const_iterator __position) |
1847 | { |
1848 | _GLIBCXX_DEBUG_PEDASSERT(__position >= begin() |
1849 | && __position < end()); |
1850 | const size_type __pos = __position - begin(); |
1851 | this->_M_erase(__pos, size_type(1)); |
1852 | return iterator(_M_data() + __pos); |
1853 | } |
1854 | |
1855 | /** |
1856 | * @brief Remove a range of characters. |
1857 | * @param __first Iterator referencing the first character to remove. |
1858 | * @param __last Iterator referencing the end of the range. |
1859 | * @return Iterator referencing location of first after removal. |
1860 | * |
1861 | * Removes the characters in the range [first,last) from this string. |
1862 | * The value of the string doesn't change if an error is thrown. |
1863 | */ |
1864 | iterator |
1865 | erase(__const_iterator __first, __const_iterator __last) |
1866 | { |
1867 | _GLIBCXX_DEBUG_PEDASSERT(__first >= begin() && __first <= __last |
1868 | && __last <= end()); |
1869 | const size_type __pos = __first - begin(); |
1870 | if (__last == end()) |
1871 | this->_M_set_length(__pos); |
1872 | else |
1873 | this->_M_erase(__pos, __last - __first); |
1874 | return iterator(this->_M_data() + __pos); |
1875 | } |
1876 | |
1877 | #if __cplusplus >= 201103L |
1878 | /** |
1879 | * @brief Remove the last character. |
1880 | * |
1881 | * The string must be non-empty. |
1882 | */ |
1883 | void |
1884 | pop_back() noexcept |
1885 | { |
1886 | __glibcxx_assert(!empty()); |
1887 | _M_erase(pos: size() - 1, n: 1); |
1888 | } |
1889 | #endif // C++11 |
1890 | |
1891 | /** |
1892 | * @brief Replace characters with value from another string. |
1893 | * @param __pos Index of first character to replace. |
1894 | * @param __n Number of characters to be replaced. |
1895 | * @param __str String to insert. |
1896 | * @return Reference to this string. |
1897 | * @throw std::out_of_range If @a pos is beyond the end of this |
1898 | * string. |
1899 | * @throw std::length_error If new length exceeds @c max_size(). |
1900 | * |
1901 | * Removes the characters in the range [__pos,__pos+__n) from |
1902 | * this string. In place, the value of @a __str is inserted. |
1903 | * If @a __pos is beyond end of string, out_of_range is thrown. |
1904 | * If the length of the result exceeds max_size(), length_error |
1905 | * is thrown. The value of the string doesn't change if an |
1906 | * error is thrown. |
1907 | */ |
1908 | basic_string& |
1909 | replace(size_type __pos, size_type __n, const basic_string& __str) |
1910 | { return this->replace(__pos, __n, __str._M_data(), __str.size()); } |
1911 | |
1912 | /** |
1913 | * @brief Replace characters with value from another string. |
1914 | * @param __pos1 Index of first character to replace. |
1915 | * @param __n1 Number of characters to be replaced. |
1916 | * @param __str String to insert. |
1917 | * @param __pos2 Index of first character of str to use. |
1918 | * @param __n2 Number of characters from str to use. |
1919 | * @return Reference to this string. |
1920 | * @throw std::out_of_range If @a __pos1 > size() or @a __pos2 > |
1921 | * __str.size(). |
1922 | * @throw std::length_error If new length exceeds @c max_size(). |
1923 | * |
1924 | * Removes the characters in the range [__pos1,__pos1 + n) from this |
1925 | * string. In place, the value of @a __str is inserted. If @a __pos is |
1926 | * beyond end of string, out_of_range is thrown. If the length of the |
1927 | * result exceeds max_size(), length_error is thrown. The value of the |
1928 | * string doesn't change if an error is thrown. |
1929 | */ |
1930 | basic_string& |
1931 | replace(size_type __pos1, size_type __n1, const basic_string& __str, |
1932 | size_type __pos2, size_type __n2 = npos) |
1933 | { return this->replace(__pos1, __n1, __str._M_data() |
1934 | + __str._M_check(__pos2, "basic_string::replace" ), |
1935 | __str._M_limit(__pos2, __n2)); } |
1936 | |
1937 | /** |
1938 | * @brief Replace characters with value of a C substring. |
1939 | * @param __pos Index of first character to replace. |
1940 | * @param __n1 Number of characters to be replaced. |
1941 | * @param __s C string to insert. |
1942 | * @param __n2 Number of characters from @a s to use. |
1943 | * @return Reference to this string. |
1944 | * @throw std::out_of_range If @a pos1 > size(). |
1945 | * @throw std::length_error If new length exceeds @c max_size(). |
1946 | * |
1947 | * Removes the characters in the range [__pos,__pos + __n1) |
1948 | * from this string. In place, the first @a __n2 characters of |
1949 | * @a __s are inserted, or all of @a __s if @a __n2 is too large. If |
1950 | * @a __pos is beyond end of string, out_of_range is thrown. If |
1951 | * the length of result exceeds max_size(), length_error is |
1952 | * thrown. The value of the string doesn't change if an error |
1953 | * is thrown. |
1954 | */ |
1955 | basic_string& |
1956 | replace(size_type __pos, size_type __n1, const _CharT* __s, |
1957 | size_type __n2) |
1958 | { |
1959 | __glibcxx_requires_string_len(__s, __n2); |
1960 | return _M_replace(pos: _M_check(__pos, s: "basic_string::replace" ), |
1961 | len1: _M_limit(__pos, off: __n1), __s, len2: __n2); |
1962 | } |
1963 | |
1964 | /** |
1965 | * @brief Replace characters with value of a C string. |
1966 | * @param __pos Index of first character to replace. |
1967 | * @param __n1 Number of characters to be replaced. |
1968 | * @param __s C string to insert. |
1969 | * @return Reference to this string. |
1970 | * @throw std::out_of_range If @a pos > size(). |
1971 | * @throw std::length_error If new length exceeds @c max_size(). |
1972 | * |
1973 | * Removes the characters in the range [__pos,__pos + __n1) |
1974 | * from this string. In place, the characters of @a __s are |
1975 | * inserted. If @a __pos is beyond end of string, out_of_range |
1976 | * is thrown. If the length of result exceeds max_size(), |
1977 | * length_error is thrown. The value of the string doesn't |
1978 | * change if an error is thrown. |
1979 | */ |
1980 | basic_string& |
1981 | replace(size_type __pos, size_type __n1, const _CharT* __s) |
1982 | { |
1983 | __glibcxx_requires_string(__s); |
1984 | return this->replace(__pos, __n1, __s, traits_type::length(__s)); |
1985 | } |
1986 | |
1987 | /** |
1988 | * @brief Replace characters with multiple characters. |
1989 | * @param __pos Index of first character to replace. |
1990 | * @param __n1 Number of characters to be replaced. |
1991 | * @param __n2 Number of characters to insert. |
1992 | * @param __c Character to insert. |
1993 | * @return Reference to this string. |
1994 | * @throw std::out_of_range If @a __pos > size(). |
1995 | * @throw std::length_error If new length exceeds @c max_size(). |
1996 | * |
1997 | * Removes the characters in the range [pos,pos + n1) from this |
1998 | * string. In place, @a __n2 copies of @a __c are inserted. |
1999 | * If @a __pos is beyond end of string, out_of_range is thrown. |
2000 | * If the length of result exceeds max_size(), length_error is |
2001 | * thrown. The value of the string doesn't change if an error |
2002 | * is thrown. |
2003 | */ |
2004 | basic_string& |
2005 | replace(size_type __pos, size_type __n1, size_type __n2, _CharT __c) |
2006 | { return _M_replace_aux(pos1: _M_check(__pos, s: "basic_string::replace" ), |
2007 | n1: _M_limit(__pos, off: __n1), __n2, __c); } |
2008 | |
2009 | /** |
2010 | * @brief Replace range of characters with string. |
2011 | * @param __i1 Iterator referencing start of range to replace. |
2012 | * @param __i2 Iterator referencing end of range to replace. |
2013 | * @param __str String value to insert. |
2014 | * @return Reference to this string. |
2015 | * @throw std::length_error If new length exceeds @c max_size(). |
2016 | * |
2017 | * Removes the characters in the range [__i1,__i2). In place, |
2018 | * the value of @a __str is inserted. If the length of result |
2019 | * exceeds max_size(), length_error is thrown. The value of |
2020 | * the string doesn't change if an error is thrown. |
2021 | */ |
2022 | basic_string& |
2023 | replace(__const_iterator __i1, __const_iterator __i2, |
2024 | const basic_string& __str) |
2025 | { return this->replace(__i1, __i2, __str._M_data(), __str.size()); } |
2026 | |
2027 | /** |
2028 | * @brief Replace range of characters with C substring. |
2029 | * @param __i1 Iterator referencing start of range to replace. |
2030 | * @param __i2 Iterator referencing end of range to replace. |
2031 | * @param __s C string value to insert. |
2032 | * @param __n Number of characters from s to insert. |
2033 | * @return Reference to this string. |
2034 | * @throw std::length_error If new length exceeds @c max_size(). |
2035 | * |
2036 | * Removes the characters in the range [__i1,__i2). In place, |
2037 | * the first @a __n characters of @a __s are inserted. If the |
2038 | * length of result exceeds max_size(), length_error is thrown. |
2039 | * The value of the string doesn't change if an error is |
2040 | * thrown. |
2041 | */ |
2042 | basic_string& |
2043 | replace(__const_iterator __i1, __const_iterator __i2, |
2044 | const _CharT* __s, size_type __n) |
2045 | { |
2046 | _GLIBCXX_DEBUG_PEDASSERT(begin() <= __i1 && __i1 <= __i2 |
2047 | && __i2 <= end()); |
2048 | return this->replace(__i1 - begin(), __i2 - __i1, __s, __n); |
2049 | } |
2050 | |
2051 | /** |
2052 | * @brief Replace range of characters with C string. |
2053 | * @param __i1 Iterator referencing start of range to replace. |
2054 | * @param __i2 Iterator referencing end of range to replace. |
2055 | * @param __s C string value to insert. |
2056 | * @return Reference to this string. |
2057 | * @throw std::length_error If new length exceeds @c max_size(). |
2058 | * |
2059 | * Removes the characters in the range [__i1,__i2). In place, |
2060 | * the characters of @a __s are inserted. If the length of |
2061 | * result exceeds max_size(), length_error is thrown. The |
2062 | * value of the string doesn't change if an error is thrown. |
2063 | */ |
2064 | basic_string& |
2065 | replace(__const_iterator __i1, __const_iterator __i2, const _CharT* __s) |
2066 | { |
2067 | __glibcxx_requires_string(__s); |
2068 | return this->replace(__i1, __i2, __s, traits_type::length(__s)); |
2069 | } |
2070 | |
2071 | /** |
2072 | * @brief Replace range of characters with multiple characters |
2073 | * @param __i1 Iterator referencing start of range to replace. |
2074 | * @param __i2 Iterator referencing end of range to replace. |
2075 | * @param __n Number of characters to insert. |
2076 | * @param __c Character to insert. |
2077 | * @return Reference to this string. |
2078 | * @throw std::length_error If new length exceeds @c max_size(). |
2079 | * |
2080 | * Removes the characters in the range [__i1,__i2). In place, |
2081 | * @a __n copies of @a __c are inserted. If the length of |
2082 | * result exceeds max_size(), length_error is thrown. The |
2083 | * value of the string doesn't change if an error is thrown. |
2084 | */ |
2085 | basic_string& |
2086 | replace(__const_iterator __i1, __const_iterator __i2, size_type __n, |
2087 | _CharT __c) |
2088 | { |
2089 | _GLIBCXX_DEBUG_PEDASSERT(begin() <= __i1 && __i1 <= __i2 |
2090 | && __i2 <= end()); |
2091 | return _M_replace_aux(pos1: __i1 - begin(), n1: __i2 - __i1, n2: __n, __c); |
2092 | } |
2093 | |
2094 | /** |
2095 | * @brief Replace range of characters with range. |
2096 | * @param __i1 Iterator referencing start of range to replace. |
2097 | * @param __i2 Iterator referencing end of range to replace. |
2098 | * @param __k1 Iterator referencing start of range to insert. |
2099 | * @param __k2 Iterator referencing end of range to insert. |
2100 | * @return Reference to this string. |
2101 | * @throw std::length_error If new length exceeds @c max_size(). |
2102 | * |
2103 | * Removes the characters in the range [__i1,__i2). In place, |
2104 | * characters in the range [__k1,__k2) are inserted. If the |
2105 | * length of result exceeds max_size(), length_error is thrown. |
2106 | * The value of the string doesn't change if an error is |
2107 | * thrown. |
2108 | */ |
2109 | #if __cplusplus >= 201103L |
2110 | template<class _InputIterator, |
2111 | typename = std::_RequireInputIter<_InputIterator>> |
2112 | basic_string& |
2113 | replace(const_iterator __i1, const_iterator __i2, |
2114 | _InputIterator __k1, _InputIterator __k2) |
2115 | { |
2116 | _GLIBCXX_DEBUG_PEDASSERT(begin() <= __i1 && __i1 <= __i2 |
2117 | && __i2 <= end()); |
2118 | __glibcxx_requires_valid_range(__k1, __k2); |
2119 | return this->_M_replace_dispatch(__i1, __i2, __k1, __k2, |
2120 | std::__false_type()); |
2121 | } |
2122 | #else |
2123 | template<class _InputIterator> |
2124 | #ifdef _GLIBCXX_DISAMBIGUATE_REPLACE_INST |
2125 | typename __enable_if_not_native_iterator<_InputIterator>::__type |
2126 | #else |
2127 | basic_string& |
2128 | #endif |
2129 | replace(iterator __i1, iterator __i2, |
2130 | _InputIterator __k1, _InputIterator __k2) |
2131 | { |
2132 | _GLIBCXX_DEBUG_PEDASSERT(begin() <= __i1 && __i1 <= __i2 |
2133 | && __i2 <= end()); |
2134 | __glibcxx_requires_valid_range(__k1, __k2); |
2135 | typedef typename std::__is_integer<_InputIterator>::__type _Integral; |
2136 | return _M_replace_dispatch(__i1, __i2, __k1, __k2, _Integral()); |
2137 | } |
2138 | #endif |
2139 | |
2140 | // Specializations for the common case of pointer and iterator: |
2141 | // useful to avoid the overhead of temporary buffering in _M_replace. |
2142 | basic_string& |
2143 | replace(__const_iterator __i1, __const_iterator __i2, |
2144 | _CharT* __k1, _CharT* __k2) |
2145 | { |
2146 | _GLIBCXX_DEBUG_PEDASSERT(begin() <= __i1 && __i1 <= __i2 |
2147 | && __i2 <= end()); |
2148 | __glibcxx_requires_valid_range(__k1, __k2); |
2149 | return this->replace(__i1 - begin(), __i2 - __i1, |
2150 | __k1, __k2 - __k1); |
2151 | } |
2152 | |
2153 | basic_string& |
2154 | replace(__const_iterator __i1, __const_iterator __i2, |
2155 | const _CharT* __k1, const _CharT* __k2) |
2156 | { |
2157 | _GLIBCXX_DEBUG_PEDASSERT(begin() <= __i1 && __i1 <= __i2 |
2158 | && __i2 <= end()); |
2159 | __glibcxx_requires_valid_range(__k1, __k2); |
2160 | return this->replace(__i1 - begin(), __i2 - __i1, |
2161 | __k1, __k2 - __k1); |
2162 | } |
2163 | |
2164 | basic_string& |
2165 | replace(__const_iterator __i1, __const_iterator __i2, |
2166 | iterator __k1, iterator __k2) |
2167 | { |
2168 | _GLIBCXX_DEBUG_PEDASSERT(begin() <= __i1 && __i1 <= __i2 |
2169 | && __i2 <= end()); |
2170 | __glibcxx_requires_valid_range(__k1, __k2); |
2171 | return this->replace(__i1 - begin(), __i2 - __i1, |
2172 | __k1.base(), __k2 - __k1); |
2173 | } |
2174 | |
2175 | basic_string& |
2176 | replace(__const_iterator __i1, __const_iterator __i2, |
2177 | const_iterator __k1, const_iterator __k2) |
2178 | { |
2179 | _GLIBCXX_DEBUG_PEDASSERT(begin() <= __i1 && __i1 <= __i2 |
2180 | && __i2 <= end()); |
2181 | __glibcxx_requires_valid_range(__k1, __k2); |
2182 | return this->replace(__i1 - begin(), __i2 - __i1, |
2183 | __k1.base(), __k2 - __k1); |
2184 | } |
2185 | |
2186 | #if __cplusplus >= 201103L |
2187 | /** |
2188 | * @brief Replace range of characters with initializer_list. |
2189 | * @param __i1 Iterator referencing start of range to replace. |
2190 | * @param __i2 Iterator referencing end of range to replace. |
2191 | * @param __l The initializer_list of characters to insert. |
2192 | * @return Reference to this string. |
2193 | * @throw std::length_error If new length exceeds @c max_size(). |
2194 | * |
2195 | * Removes the characters in the range [__i1,__i2). In place, |
2196 | * characters in the range [__k1,__k2) are inserted. If the |
2197 | * length of result exceeds max_size(), length_error is thrown. |
2198 | * The value of the string doesn't change if an error is |
2199 | * thrown. |
2200 | */ |
2201 | basic_string& replace(const_iterator __i1, const_iterator __i2, |
2202 | initializer_list<_CharT> __l) |
2203 | { return this->replace(__i1, __i2, __l.begin(), __l.size()); } |
2204 | #endif // C++11 |
2205 | |
2206 | #if __cplusplus >= 201703L |
2207 | /** |
2208 | * @brief Replace range of characters with string_view. |
2209 | * @param __pos The position to replace at. |
2210 | * @param __n The number of characters to replace. |
2211 | * @param __svt The object convertible to string_view to insert. |
2212 | * @return Reference to this string. |
2213 | */ |
2214 | template<typename _Tp> |
2215 | _If_sv<_Tp, basic_string&> |
2216 | replace(size_type __pos, size_type __n, const _Tp& __svt) |
2217 | { |
2218 | __sv_type __sv = __svt; |
2219 | return this->replace(__pos, __n, __sv.data(), __sv.size()); |
2220 | } |
2221 | |
2222 | /** |
2223 | * @brief Replace range of characters with string_view. |
2224 | * @param __pos1 The position to replace at. |
2225 | * @param __n1 The number of characters to replace. |
2226 | * @param __svt The object convertible to string_view to insert from. |
2227 | * @param __pos2 The position in the string_view to insert from. |
2228 | * @param __n2 The number of characters to insert. |
2229 | * @return Reference to this string. |
2230 | */ |
2231 | template<typename _Tp> |
2232 | _If_sv<_Tp, basic_string&> |
2233 | replace(size_type __pos1, size_type __n1, const _Tp& __svt, |
2234 | size_type __pos2, size_type __n2 = npos) |
2235 | { |
2236 | __sv_type __sv = __svt; |
2237 | return this->replace(__pos1, __n1, |
2238 | __sv.data() |
2239 | + std::__sv_check(size: __sv.size(), pos: __pos2, s: "basic_string::replace" ), |
2240 | std::__sv_limit(size: __sv.size(), pos: __pos2, off: __n2)); |
2241 | } |
2242 | |
2243 | /** |
2244 | * @brief Replace range of characters with string_view. |
2245 | * @param __i1 An iterator referencing the start position |
2246 | to replace at. |
2247 | * @param __i2 An iterator referencing the end position |
2248 | for the replace. |
2249 | * @param __svt The object convertible to string_view to insert from. |
2250 | * @return Reference to this string. |
2251 | */ |
2252 | template<typename _Tp> |
2253 | _If_sv<_Tp, basic_string&> |
2254 | replace(const_iterator __i1, const_iterator __i2, const _Tp& __svt) |
2255 | { |
2256 | __sv_type __sv = __svt; |
2257 | return this->replace(__i1 - begin(), __i2 - __i1, __sv); |
2258 | } |
2259 | #endif // C++17 |
2260 | |
2261 | private: |
2262 | template<class _Integer> |
2263 | basic_string& |
2264 | _M_replace_dispatch(const_iterator __i1, const_iterator __i2, |
2265 | _Integer __n, _Integer __val, __true_type) |
2266 | { return _M_replace_aux(pos1: __i1 - begin(), n1: __i2 - __i1, n2: __n, c: __val); } |
2267 | |
2268 | template<class _InputIterator> |
2269 | basic_string& |
2270 | _M_replace_dispatch(const_iterator __i1, const_iterator __i2, |
2271 | _InputIterator __k1, _InputIterator __k2, |
2272 | __false_type); |
2273 | |
2274 | basic_string& |
2275 | _M_replace_aux(size_type __pos1, size_type __n1, size_type __n2, |
2276 | _CharT __c); |
2277 | |
2278 | basic_string& |
2279 | _M_replace(size_type __pos, size_type __len1, const _CharT* __s, |
2280 | const size_type __len2); |
2281 | |
2282 | basic_string& |
2283 | _M_append(const _CharT* __s, size_type __n); |
2284 | |
2285 | public: |
2286 | |
2287 | /** |
2288 | * @brief Copy substring into C string. |
2289 | * @param __s C string to copy value into. |
2290 | * @param __n Number of characters to copy. |
2291 | * @param __pos Index of first character to copy. |
2292 | * @return Number of characters actually copied |
2293 | * @throw std::out_of_range If __pos > size(). |
2294 | * |
2295 | * Copies up to @a __n characters starting at @a __pos into the |
2296 | * C string @a __s. If @a __pos is %greater than size(), |
2297 | * out_of_range is thrown. |
2298 | */ |
2299 | size_type |
2300 | copy(_CharT* __s, size_type __n, size_type __pos = 0) const; |
2301 | |
2302 | /** |
2303 | * @brief Swap contents with another string. |
2304 | * @param __s String to swap with. |
2305 | * |
2306 | * Exchanges the contents of this string with that of @a __s in constant |
2307 | * time. |
2308 | */ |
2309 | void |
2310 | swap(basic_string& __s) _GLIBCXX_NOEXCEPT; |
2311 | |
2312 | // String operations: |
2313 | /** |
2314 | * @brief Return const pointer to null-terminated contents. |
2315 | * |
2316 | * This is a handle to internal data. Do not modify or dire things may |
2317 | * happen. |
2318 | */ |
2319 | const _CharT* |
2320 | c_str() const _GLIBCXX_NOEXCEPT |
2321 | { return _M_data(); } |
2322 | |
2323 | /** |
2324 | * @brief Return const pointer to contents. |
2325 | * |
2326 | * This is a pointer to internal data. It is undefined to modify |
2327 | * the contents through the returned pointer. To get a pointer that |
2328 | * allows modifying the contents use @c &str[0] instead, |
2329 | * (or in C++17 the non-const @c str.data() overload). |
2330 | */ |
2331 | const _CharT* |
2332 | data() const _GLIBCXX_NOEXCEPT |
2333 | { return _M_data(); } |
2334 | |
2335 | #if __cplusplus >= 201703L |
2336 | /** |
2337 | * @brief Return non-const pointer to contents. |
2338 | * |
2339 | * This is a pointer to the character sequence held by the string. |
2340 | * Modifying the characters in the sequence is allowed. |
2341 | */ |
2342 | _CharT* |
2343 | data() noexcept |
2344 | { return _M_data(); } |
2345 | #endif |
2346 | |
2347 | /** |
2348 | * @brief Return copy of allocator used to construct this string. |
2349 | */ |
2350 | allocator_type |
2351 | get_allocator() const _GLIBCXX_NOEXCEPT |
2352 | { return _M_get_allocator(); } |
2353 | |
2354 | /** |
2355 | * @brief Find position of a C substring. |
2356 | * @param __s C string to locate. |
2357 | * @param __pos Index of character to search from. |
2358 | * @param __n Number of characters from @a s to search for. |
2359 | * @return Index of start of first occurrence. |
2360 | * |
2361 | * Starting from @a __pos, searches forward for the first @a |
2362 | * __n characters in @a __s within this string. If found, |
2363 | * returns the index where it begins. If not found, returns |
2364 | * npos. |
2365 | */ |
2366 | size_type |
2367 | find(const _CharT* __s, size_type __pos, size_type __n) const |
2368 | _GLIBCXX_NOEXCEPT; |
2369 | |
2370 | /** |
2371 | * @brief Find position of a string. |
2372 | * @param __str String to locate. |
2373 | * @param __pos Index of character to search from (default 0). |
2374 | * @return Index of start of first occurrence. |
2375 | * |
2376 | * Starting from @a __pos, searches forward for value of @a __str within |
2377 | * this string. If found, returns the index where it begins. If not |
2378 | * found, returns npos. |
2379 | */ |
2380 | size_type |
2381 | find(const basic_string& __str, size_type __pos = 0) const |
2382 | _GLIBCXX_NOEXCEPT |
2383 | { return this->find(__str.data(), __pos, __str.size()); } |
2384 | |
2385 | #if __cplusplus >= 201703L |
2386 | /** |
2387 | * @brief Find position of a string_view. |
2388 | * @param __svt The object convertible to string_view to locate. |
2389 | * @param __pos Index of character to search from (default 0). |
2390 | * @return Index of start of first occurrence. |
2391 | */ |
2392 | template<typename _Tp> |
2393 | _If_sv<_Tp, size_type> |
2394 | find(const _Tp& __svt, size_type __pos = 0) const |
2395 | noexcept(is_same<_Tp, __sv_type>::value) |
2396 | { |
2397 | __sv_type __sv = __svt; |
2398 | return this->find(__sv.data(), __pos, __sv.size()); |
2399 | } |
2400 | #endif // C++17 |
2401 | |
2402 | /** |
2403 | * @brief Find position of a C string. |
2404 | * @param __s C string to locate. |
2405 | * @param __pos Index of character to search from (default 0). |
2406 | * @return Index of start of first occurrence. |
2407 | * |
2408 | * Starting from @a __pos, searches forward for the value of @a |
2409 | * __s within this string. If found, returns the index where |
2410 | * it begins. If not found, returns npos. |
2411 | */ |
2412 | size_type |
2413 | find(const _CharT* __s, size_type __pos = 0) const _GLIBCXX_NOEXCEPT |
2414 | { |
2415 | __glibcxx_requires_string(__s); |
2416 | return this->find(__s, __pos, traits_type::length(__s)); |
2417 | } |
2418 | |
2419 | /** |
2420 | * @brief Find position of a character. |
2421 | * @param __c Character to locate. |
2422 | * @param __pos Index of character to search from (default 0). |
2423 | * @return Index of first occurrence. |
2424 | * |
2425 | * Starting from @a __pos, searches forward for @a __c within |
2426 | * this string. If found, returns the index where it was |
2427 | * found. If not found, returns npos. |
2428 | */ |
2429 | size_type |
2430 | find(_CharT __c, size_type __pos = 0) const _GLIBCXX_NOEXCEPT; |
2431 | |
2432 | /** |
2433 | * @brief Find last position of a string. |
2434 | * @param __str String to locate. |
2435 | * @param __pos Index of character to search back from (default end). |
2436 | * @return Index of start of last occurrence. |
2437 | * |
2438 | * Starting from @a __pos, searches backward for value of @a |
2439 | * __str within this string. If found, returns the index where |
2440 | * it begins. If not found, returns npos. |
2441 | */ |
2442 | size_type |
2443 | rfind(const basic_string& __str, size_type __pos = npos) const |
2444 | _GLIBCXX_NOEXCEPT |
2445 | { return this->rfind(__str.data(), __pos, __str.size()); } |
2446 | |
2447 | #if __cplusplus >= 201703L |
2448 | /** |
2449 | * @brief Find last position of a string_view. |
2450 | * @param __svt The object convertible to string_view to locate. |
2451 | * @param __pos Index of character to search back from (default end). |
2452 | * @return Index of start of last occurrence. |
2453 | */ |
2454 | template<typename _Tp> |
2455 | _If_sv<_Tp, size_type> |
2456 | rfind(const _Tp& __svt, size_type __pos = npos) const |
2457 | noexcept(is_same<_Tp, __sv_type>::value) |
2458 | { |
2459 | __sv_type __sv = __svt; |
2460 | return this->rfind(__sv.data(), __pos, __sv.size()); |
2461 | } |
2462 | #endif // C++17 |
2463 | |
2464 | /** |
2465 | * @brief Find last position of a C substring. |
2466 | * @param __s C string to locate. |
2467 | * @param __pos Index of character to search back from. |
2468 | * @param __n Number of characters from s to search for. |
2469 | * @return Index of start of last occurrence. |
2470 | * |
2471 | * Starting from @a __pos, searches backward for the first @a |
2472 | * __n characters in @a __s within this string. If found, |
2473 | * returns the index where it begins. If not found, returns |
2474 | * npos. |
2475 | */ |
2476 | size_type |
2477 | rfind(const _CharT* __s, size_type __pos, size_type __n) const |
2478 | _GLIBCXX_NOEXCEPT; |
2479 | |
2480 | /** |
2481 | * @brief Find last position of a C string. |
2482 | * @param __s C string to locate. |
2483 | * @param __pos Index of character to start search at (default end). |
2484 | * @return Index of start of last occurrence. |
2485 | * |
2486 | * Starting from @a __pos, searches backward for the value of |
2487 | * @a __s within this string. If found, returns the index |
2488 | * where it begins. If not found, returns npos. |
2489 | */ |
2490 | size_type |
2491 | rfind(const _CharT* __s, size_type __pos = npos) const |
2492 | { |
2493 | __glibcxx_requires_string(__s); |
2494 | return this->rfind(__s, __pos, traits_type::length(__s)); |
2495 | } |
2496 | |
2497 | /** |
2498 | * @brief Find last position of a character. |
2499 | * @param __c Character to locate. |
2500 | * @param __pos Index of character to search back from (default end). |
2501 | * @return Index of last occurrence. |
2502 | * |
2503 | * Starting from @a __pos, searches backward for @a __c within |
2504 | * this string. If found, returns the index where it was |
2505 | * found. If not found, returns npos. |
2506 | */ |
2507 | size_type |
2508 | rfind(_CharT __c, size_type __pos = npos) const _GLIBCXX_NOEXCEPT; |
2509 | |
2510 | /** |
2511 | * @brief Find position of a character of string. |
2512 | * @param __str String containing characters to locate. |
2513 | * @param __pos Index of character to search from (default 0). |
2514 | * @return Index of first occurrence. |
2515 | * |
2516 | * Starting from @a __pos, searches forward for one of the |
2517 | * characters of @a __str within this string. If found, |
2518 | * returns the index where it was found. If not found, returns |
2519 | * npos. |
2520 | */ |
2521 | size_type |
2522 | find_first_of(const basic_string& __str, size_type __pos = 0) const |
2523 | _GLIBCXX_NOEXCEPT |
2524 | { return this->find_first_of(__str.data(), __pos, __str.size()); } |
2525 | |
2526 | #if __cplusplus >= 201703L |
2527 | /** |
2528 | * @brief Find position of a character of a string_view. |
2529 | * @param __svt An object convertible to string_view containing |
2530 | * characters to locate. |
2531 | * @param __pos Index of character to search from (default 0). |
2532 | * @return Index of first occurrence. |
2533 | */ |
2534 | template<typename _Tp> |
2535 | _If_sv<_Tp, size_type> |
2536 | find_first_of(const _Tp& __svt, size_type __pos = 0) const |
2537 | noexcept(is_same<_Tp, __sv_type>::value) |
2538 | { |
2539 | __sv_type __sv = __svt; |
2540 | return this->find_first_of(__sv.data(), __pos, __sv.size()); |
2541 | } |
2542 | #endif // C++17 |
2543 | |
2544 | /** |
2545 | * @brief Find position of a character of C substring. |
2546 | * @param __s String containing characters to locate. |
2547 | * @param __pos Index of character to search from. |
2548 | * @param __n Number of characters from s to search for. |
2549 | * @return Index of first occurrence. |
2550 | * |
2551 | * Starting from @a __pos, searches forward for one of the |
2552 | * first @a __n characters of @a __s within this string. If |
2553 | * found, returns the index where it was found. If not found, |
2554 | * returns npos. |
2555 | */ |
2556 | size_type |
2557 | find_first_of(const _CharT* __s, size_type __pos, size_type __n) const |
2558 | _GLIBCXX_NOEXCEPT; |
2559 | |
2560 | /** |
2561 | * @brief Find position of a character of C string. |
2562 | * @param __s String containing characters to locate. |
2563 | * @param __pos Index of character to search from (default 0). |
2564 | * @return Index of first occurrence. |
2565 | * |
2566 | * Starting from @a __pos, searches forward for one of the |
2567 | * characters of @a __s within this string. If found, returns |
2568 | * the index where it was found. If not found, returns npos. |
2569 | */ |
2570 | size_type |
2571 | find_first_of(const _CharT* __s, size_type __pos = 0) const |
2572 | _GLIBCXX_NOEXCEPT |
2573 | { |
2574 | __glibcxx_requires_string(__s); |
2575 | return this->find_first_of(__s, __pos, traits_type::length(__s)); |
2576 | } |
2577 | |
2578 | /** |
2579 | * @brief Find position of a character. |
2580 | * @param __c Character to locate. |
2581 | * @param __pos Index of character to search from (default 0). |
2582 | * @return Index of first occurrence. |
2583 | * |
2584 | * Starting from @a __pos, searches forward for the character |
2585 | * @a __c within this string. If found, returns the index |
2586 | * where it was found. If not found, returns npos. |
2587 | * |
2588 | * Note: equivalent to find(__c, __pos). |
2589 | */ |
2590 | size_type |
2591 | find_first_of(_CharT __c, size_type __pos = 0) const _GLIBCXX_NOEXCEPT |
2592 | { return this->find(__c, __pos); } |
2593 | |
2594 | /** |
2595 | * @brief Find last position of a character of string. |
2596 | * @param __str String containing characters to locate. |
2597 | * @param __pos Index of character to search back from (default end). |
2598 | * @return Index of last occurrence. |
2599 | * |
2600 | * Starting from @a __pos, searches backward for one of the |
2601 | * characters of @a __str within this string. If found, |
2602 | * returns the index where it was found. If not found, returns |
2603 | * npos. |
2604 | */ |
2605 | size_type |
2606 | find_last_of(const basic_string& __str, size_type __pos = npos) const |
2607 | _GLIBCXX_NOEXCEPT |
2608 | { return this->find_last_of(__str.data(), __pos, __str.size()); } |
2609 | |
2610 | #if __cplusplus >= 201703L |
2611 | /** |
2612 | * @brief Find last position of a character of string. |
2613 | * @param __svt An object convertible to string_view containing |
2614 | * characters to locate. |
2615 | * @param __pos Index of character to search back from (default end). |
2616 | * @return Index of last occurrence. |
2617 | */ |
2618 | template<typename _Tp> |
2619 | _If_sv<_Tp, size_type> |
2620 | find_last_of(const _Tp& __svt, size_type __pos = npos) const |
2621 | noexcept(is_same<_Tp, __sv_type>::value) |
2622 | { |
2623 | __sv_type __sv = __svt; |
2624 | return this->find_last_of(__sv.data(), __pos, __sv.size()); |
2625 | } |
2626 | #endif // C++17 |
2627 | |
2628 | /** |
2629 | * @brief Find last position of a character of C substring. |
2630 | * @param __s C string containing characters to locate. |
2631 | * @param __pos Index of character to search back from. |
2632 | * @param __n Number of characters from s to search for. |
2633 | * @return Index of last occurrence. |
2634 | * |
2635 | * Starting from @a __pos, searches backward for one of the |
2636 | * first @a __n characters of @a __s within this string. If |
2637 | * found, returns the index where it was found. If not found, |
2638 | * returns npos. |
2639 | */ |
2640 | size_type |
2641 | find_last_of(const _CharT* __s, size_type __pos, size_type __n) const |
2642 | _GLIBCXX_NOEXCEPT; |
2643 | |
2644 | /** |
2645 | * @brief Find last position of a character of C string. |
2646 | * @param __s C string containing characters to locate. |
2647 | * @param __pos Index of character to search back from (default end). |
2648 | * @return Index of last occurrence. |
2649 | * |
2650 | * Starting from @a __pos, searches backward for one of the |
2651 | * characters of @a __s within this string. If found, returns |
2652 | * the index where it was found. If not found, returns npos. |
2653 | */ |
2654 | size_type |
2655 | find_last_of(const _CharT* __s, size_type __pos = npos) const |
2656 | _GLIBCXX_NOEXCEPT |
2657 | { |
2658 | __glibcxx_requires_string(__s); |
2659 | return this->find_last_of(__s, __pos, traits_type::length(__s)); |
2660 | } |
2661 | |
2662 | /** |
2663 | * @brief Find last position of a character. |
2664 | * @param __c Character to locate. |
2665 | * @param __pos Index of character to search back from (default end). |
2666 | * @return Index of last occurrence. |
2667 | * |
2668 | * Starting from @a __pos, searches backward for @a __c within |
2669 | * this string. If found, returns the index where it was |
2670 | * found. If not found, returns npos. |
2671 | * |
2672 | * Note: equivalent to rfind(__c, __pos). |
2673 | */ |
2674 | size_type |
2675 | find_last_of(_CharT __c, size_type __pos = npos) const _GLIBCXX_NOEXCEPT |
2676 | { return this->rfind(__c, __pos); } |
2677 | |
2678 | /** |
2679 | * @brief Find position of a character not in string. |
2680 | * @param __str String containing characters to avoid. |
2681 | * @param __pos Index of character to search from (default 0). |
2682 | * @return Index of first occurrence. |
2683 | * |
2684 | * Starting from @a __pos, searches forward for a character not contained |
2685 | * in @a __str within this string. If found, returns the index where it |
2686 | * was found. If not found, returns npos. |
2687 | */ |
2688 | size_type |
2689 | find_first_not_of(const basic_string& __str, size_type __pos = 0) const |
2690 | _GLIBCXX_NOEXCEPT |
2691 | { return this->find_first_not_of(__str.data(), __pos, __str.size()); } |
2692 | |
2693 | #if __cplusplus >= 201703L |
2694 | /** |
2695 | * @brief Find position of a character not in a string_view. |
2696 | * @param __svt A object convertible to string_view containing |
2697 | * characters to avoid. |
2698 | * @param __pos Index of character to search from (default 0). |
2699 | * @return Index of first occurrence. |
2700 | */ |
2701 | template<typename _Tp> |
2702 | _If_sv<_Tp, size_type> |
2703 | find_first_not_of(const _Tp& __svt, size_type __pos = 0) const |
2704 | noexcept(is_same<_Tp, __sv_type>::value) |
2705 | { |
2706 | __sv_type __sv = __svt; |
2707 | return this->find_first_not_of(__sv.data(), __pos, __sv.size()); |
2708 | } |
2709 | #endif // C++17 |
2710 | |
2711 | /** |
2712 | * @brief Find position of a character not in C substring. |
2713 | * @param __s C string containing characters to avoid. |
2714 | * @param __pos Index of character to search from. |
2715 | * @param __n Number of characters from __s to consider. |
2716 | * @return Index of first occurrence. |
2717 | * |
2718 | * Starting from @a __pos, searches forward for a character not |
2719 | * contained in the first @a __n characters of @a __s within |
2720 | * this string. If found, returns the index where it was |
2721 | * found. If not found, returns npos. |
2722 | */ |
2723 | size_type |
2724 | find_first_not_of(const _CharT* __s, size_type __pos, |
2725 | size_type __n) const _GLIBCXX_NOEXCEPT; |
2726 | |
2727 | /** |
2728 | * @brief Find position of a character not in C string. |
2729 | * @param __s C string containing characters to avoid. |
2730 | * @param __pos Index of character to search from (default 0). |
2731 | * @return Index of first occurrence. |
2732 | * |
2733 | * Starting from @a __pos, searches forward for a character not |
2734 | * contained in @a __s within this string. If found, returns |
2735 | * the index where it was found. If not found, returns npos. |
2736 | */ |
2737 | size_type |
2738 | find_first_not_of(const _CharT* __s, size_type __pos = 0) const |
2739 | _GLIBCXX_NOEXCEPT |
2740 | { |
2741 | __glibcxx_requires_string(__s); |
2742 | return this->find_first_not_of(__s, __pos, traits_type::length(__s)); |
2743 | } |
2744 | |
2745 | /** |
2746 | * @brief Find position of a different character. |
2747 | * @param __c Character to avoid. |
2748 | * @param __pos Index of character to search from (default 0). |
2749 | * @return Index of first occurrence. |
2750 | * |
2751 | * Starting from @a __pos, searches forward for a character |
2752 | * other than @a __c within this string. If found, returns the |
2753 | * index where it was found. If not found, returns npos. |
2754 | */ |
2755 | size_type |
2756 | find_first_not_of(_CharT __c, size_type __pos = 0) const |
2757 | _GLIBCXX_NOEXCEPT; |
2758 | |
2759 | /** |
2760 | * @brief Find last position of a character not in string. |
2761 | * @param __str String containing characters to avoid. |
2762 | * @param __pos Index of character to search back from (default end). |
2763 | * @return Index of last occurrence. |
2764 | * |
2765 | * Starting from @a __pos, searches backward for a character |
2766 | * not contained in @a __str within this string. If found, |
2767 | * returns the index where it was found. If not found, returns |
2768 | * npos. |
2769 | */ |
2770 | size_type |
2771 | find_last_not_of(const basic_string& __str, size_type __pos = npos) const |
2772 | _GLIBCXX_NOEXCEPT |
2773 | { return this->find_last_not_of(__str.data(), __pos, __str.size()); } |
2774 | |
2775 | #if __cplusplus >= 201703L |
2776 | /** |
2777 | * @brief Find last position of a character not in a string_view. |
2778 | * @param __svt An object convertible to string_view containing |
2779 | * characters to avoid. |
2780 | * @param __pos Index of character to search back from (default end). |
2781 | * @return Index of last occurrence. |
2782 | */ |
2783 | template<typename _Tp> |
2784 | _If_sv<_Tp, size_type> |
2785 | find_last_not_of(const _Tp& __svt, size_type __pos = npos) const |
2786 | noexcept(is_same<_Tp, __sv_type>::value) |
2787 | { |
2788 | __sv_type __sv = __svt; |
2789 | return this->find_last_not_of(__sv.data(), __pos, __sv.size()); |
2790 | } |
2791 | #endif // C++17 |
2792 | |
2793 | /** |
2794 | * @brief Find last position of a character not in C substring. |
2795 | * @param __s C string containing characters to avoid. |
2796 | * @param __pos Index of character to search back from. |
2797 | * @param __n Number of characters from s to consider. |
2798 | * @return Index of last occurrence. |
2799 | * |
2800 | * Starting from @a __pos, searches backward for a character not |
2801 | * contained in the first @a __n characters of @a __s within this string. |
2802 | * If found, returns the index where it was found. If not found, |
2803 | * returns npos. |
2804 | */ |
2805 | size_type |
2806 | find_last_not_of(const _CharT* __s, size_type __pos, |
2807 | size_type __n) const _GLIBCXX_NOEXCEPT; |
2808 | /** |
2809 | * @brief Find last position of a character not in C string. |
2810 | * @param __s C string containing characters to avoid. |
2811 | * @param __pos Index of character to search back from (default end). |
2812 | * @return Index of last occurrence. |
2813 | * |
2814 | * Starting from @a __pos, searches backward for a character |
2815 | * not contained in @a __s within this string. If found, |
2816 | * returns the index where it was found. If not found, returns |
2817 | * npos. |
2818 | */ |
2819 | size_type |
2820 | find_last_not_of(const _CharT* __s, size_type __pos = npos) const |
2821 | _GLIBCXX_NOEXCEPT |
2822 | { |
2823 | __glibcxx_requires_string(__s); |
2824 | return this->find_last_not_of(__s, __pos, traits_type::length(__s)); |
2825 | } |
2826 | |
2827 | /** |
2828 | * @brief Find last position of a different character. |
2829 | * @param __c Character to avoid. |
2830 | * @param __pos Index of character to search back from (default end). |
2831 | * @return Index of last occurrence. |
2832 | * |
2833 | * Starting from @a __pos, searches backward for a character other than |
2834 | * @a __c within this string. If found, returns the index where it was |
2835 | * found. If not found, returns npos. |
2836 | */ |
2837 | size_type |
2838 | find_last_not_of(_CharT __c, size_type __pos = npos) const |
2839 | _GLIBCXX_NOEXCEPT; |
2840 | |
2841 | /** |
2842 | * @brief Get a substring. |
2843 | * @param __pos Index of first character (default 0). |
2844 | * @param __n Number of characters in substring (default remainder). |
2845 | * @return The new string. |
2846 | * @throw std::out_of_range If __pos > size(). |
2847 | * |
2848 | * Construct and return a new string using the @a __n |
2849 | * characters starting at @a __pos. If the string is too |
2850 | * short, use the remainder of the characters. If @a __pos is |
2851 | * beyond the end of the string, out_of_range is thrown. |
2852 | */ |
2853 | basic_string |
2854 | substr(size_type __pos = 0, size_type __n = npos) const |
2855 | { return basic_string(*this, |
2856 | _M_check(__pos, s: "basic_string::substr" ), __n); } |
2857 | |
2858 | /** |
2859 | * @brief Compare to a string. |
2860 | * @param __str String to compare against. |
2861 | * @return Integer < 0, 0, or > 0. |
2862 | * |
2863 | * Returns an integer < 0 if this string is ordered before @a |
2864 | * __str, 0 if their values are equivalent, or > 0 if this |
2865 | * string is ordered after @a __str. Determines the effective |
2866 | * length rlen of the strings to compare as the smallest of |
2867 | * size() and str.size(). The function then compares the two |
2868 | * strings by calling traits::compare(data(), str.data(),rlen). |
2869 | * If the result of the comparison is nonzero returns it, |
2870 | * otherwise the shorter one is ordered first. |
2871 | */ |
2872 | int |
2873 | compare(const basic_string& __str) const |
2874 | { |
2875 | const size_type __size = this->size(); |
2876 | const size_type __osize = __str.size(); |
2877 | const size_type __len = std::min(__size, __osize); |
2878 | |
2879 | int __r = traits_type::compare(_M_data(), __str.data(), __len); |
2880 | if (!__r) |
2881 | __r = _S_compare(n1: __size, n2: __osize); |
2882 | return __r; |
2883 | } |
2884 | |
2885 | #if __cplusplus >= 201703L |
2886 | /** |
2887 | * @brief Compare to a string_view. |
2888 | * @param __svt An object convertible to string_view to compare against. |
2889 | * @return Integer < 0, 0, or > 0. |
2890 | */ |
2891 | template<typename _Tp> |
2892 | _If_sv<_Tp, int> |
2893 | compare(const _Tp& __svt) const |
2894 | noexcept(is_same<_Tp, __sv_type>::value) |
2895 | { |
2896 | __sv_type __sv = __svt; |
2897 | const size_type __size = this->size(); |
2898 | const size_type __osize = __sv.size(); |
2899 | const size_type __len = std::min(__size, __osize); |
2900 | |
2901 | int __r = traits_type::compare(_M_data(), __sv.data(), __len); |
2902 | if (!__r) |
2903 | __r = _S_compare(n1: __size, n2: __osize); |
2904 | return __r; |
2905 | } |
2906 | |
2907 | /** |
2908 | * @brief Compare to a string_view. |
2909 | * @param __pos A position in the string to start comparing from. |
2910 | * @param __n The number of characters to compare. |
2911 | * @param __svt An object convertible to string_view to compare |
2912 | * against. |
2913 | * @return Integer < 0, 0, or > 0. |
2914 | */ |
2915 | template<typename _Tp> |
2916 | _If_sv<_Tp, int> |
2917 | compare(size_type __pos, size_type __n, const _Tp& __svt) const |
2918 | noexcept(is_same<_Tp, __sv_type>::value) |
2919 | { |
2920 | __sv_type __sv = __svt; |
2921 | return __sv_type(*this).substr(__pos, __n).compare(__sv); |
2922 | } |
2923 | |
2924 | /** |
2925 | * @brief Compare to a string_view. |
2926 | * @param __pos1 A position in the string to start comparing from. |
2927 | * @param __n1 The number of characters to compare. |
2928 | * @param __svt An object convertible to string_view to compare |
2929 | * against. |
2930 | * @param __pos2 A position in the string_view to start comparing from. |
2931 | * @param __n2 The number of characters to compare. |
2932 | * @return Integer < 0, 0, or > 0. |
2933 | */ |
2934 | template<typename _Tp> |
2935 | _If_sv<_Tp, int> |
2936 | compare(size_type __pos1, size_type __n1, const _Tp& __svt, |
2937 | size_type __pos2, size_type __n2 = npos) const |
2938 | noexcept(is_same<_Tp, __sv_type>::value) |
2939 | { |
2940 | __sv_type __sv = __svt; |
2941 | return __sv_type(*this) |
2942 | .substr(__pos1, __n1).compare(__sv.substr(__pos2, __n2)); |
2943 | } |
2944 | #endif // C++17 |
2945 | |
2946 | /** |
2947 | * @brief Compare substring to a string. |
2948 | * @param __pos Index of first character of substring. |
2949 | * @param __n Number of characters in substring. |
2950 | * @param __str String to compare against. |
2951 | * @return Integer < 0, 0, or > 0. |
2952 | * |
2953 | * Form the substring of this string from the @a __n characters |
2954 | * starting at @a __pos. Returns an integer < 0 if the |
2955 | * substring is ordered before @a __str, 0 if their values are |
2956 | * equivalent, or > 0 if the substring is ordered after @a |
2957 | * __str. Determines the effective length rlen of the strings |
2958 | * to compare as the smallest of the length of the substring |
2959 | * and @a __str.size(). The function then compares the two |
2960 | * strings by calling |
2961 | * traits::compare(substring.data(),str.data(),rlen). If the |
2962 | * result of the comparison is nonzero returns it, otherwise |
2963 | * the shorter one is ordered first. |
2964 | */ |
2965 | int |
2966 | compare(size_type __pos, size_type __n, const basic_string& __str) const; |
2967 | |
2968 | /** |
2969 | * @brief Compare substring to a substring. |
2970 | * @param __pos1 Index of first character of substring. |
2971 | * @param __n1 Number of characters in substring. |
2972 | * @param __str String to compare against. |
2973 | * @param __pos2 Index of first character of substring of str. |
2974 | * @param __n2 Number of characters in substring of str. |
2975 | * @return Integer < 0, 0, or > 0. |
2976 | * |
2977 | * Form the substring of this string from the @a __n1 |
2978 | * characters starting at @a __pos1. Form the substring of @a |
2979 | * __str from the @a __n2 characters starting at @a __pos2. |
2980 | * Returns an integer < 0 if this substring is ordered before |
2981 | * the substring of @a __str, 0 if their values are equivalent, |
2982 | * or > 0 if this substring is ordered after the substring of |
2983 | * @a __str. Determines the effective length rlen of the |
2984 | * strings to compare as the smallest of the lengths of the |
2985 | * substrings. The function then compares the two strings by |
2986 | * calling |
2987 | * traits::compare(substring.data(),str.substr(pos2,n2).data(),rlen). |
2988 | * If the result of the comparison is nonzero returns it, |
2989 | * otherwise the shorter one is ordered first. |
2990 | */ |
2991 | int |
2992 | compare(size_type __pos1, size_type __n1, const basic_string& __str, |
2993 | size_type __pos2, size_type __n2 = npos) const; |
2994 | |
2995 | /** |
2996 | * @brief Compare to a C string. |
2997 | * @param __s C string to compare against. |
2998 | * @return Integer < 0, 0, or > 0. |
2999 | * |
3000 | * Returns an integer < 0 if this string is ordered before @a __s, 0 if |
3001 | * their values are equivalent, or > 0 if this string is ordered after |
3002 | * @a __s. Determines the effective length rlen of the strings to |
3003 | * compare as the smallest of size() and the length of a string |
3004 | * constructed from @a __s. The function then compares the two strings |
3005 | * by calling traits::compare(data(),s,rlen). If the result of the |
3006 | * comparison is nonzero returns it, otherwise the shorter one is |
3007 | * ordered first. |
3008 | */ |
3009 | int |
3010 | compare(const _CharT* __s) const _GLIBCXX_NOEXCEPT; |
3011 | |
3012 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
3013 | // 5 String::compare specification questionable |
3014 | /** |
3015 | * @brief Compare substring to a C string. |
3016 | * @param __pos Index of first character of substring. |
3017 | * @param __n1 Number of characters in substring. |
3018 | * @param __s C string to compare against. |
3019 | * @return Integer < 0, 0, or > 0. |
3020 | * |
3021 | * Form the substring of this string from the @a __n1 |
3022 | * characters starting at @a pos. Returns an integer < 0 if |
3023 | * the substring is ordered before @a __s, 0 if their values |
3024 | * are equivalent, or > 0 if the substring is ordered after @a |
3025 | * __s. Determines the effective length rlen of the strings to |
3026 | * compare as the smallest of the length of the substring and |
3027 | * the length of a string constructed from @a __s. The |
3028 | * function then compares the two string by calling |
3029 | * traits::compare(substring.data(),__s,rlen). If the result of |
3030 | * the comparison is nonzero returns it, otherwise the shorter |
3031 | * one is ordered first. |
3032 | */ |
3033 | int |
3034 | compare(size_type __pos, size_type __n1, const _CharT* __s) const; |
3035 | |
3036 | /** |
3037 | * @brief Compare substring against a character %array. |
3038 | * @param __pos Index of first character of substring. |
3039 | * @param __n1 Number of characters in substring. |
3040 | * @param __s character %array to compare against. |
3041 | * @param __n2 Number of characters of s. |
3042 | * @return Integer < 0, 0, or > 0. |
3043 | * |
3044 | * Form the substring of this string from the @a __n1 |
3045 | * characters starting at @a __pos. Form a string from the |
3046 | * first @a __n2 characters of @a __s. Returns an integer < 0 |
3047 | * if this substring is ordered before the string from @a __s, |
3048 | * 0 if their values are equivalent, or > 0 if this substring |
3049 | * is ordered after the string from @a __s. Determines the |
3050 | * effective length rlen of the strings to compare as the |
3051 | * smallest of the length of the substring and @a __n2. The |
3052 | * function then compares the two strings by calling |
3053 | * traits::compare(substring.data(),s,rlen). If the result of |
3054 | * the comparison is nonzero returns it, otherwise the shorter |
3055 | * one is ordered first. |
3056 | * |
3057 | * NB: s must have at least n2 characters, '\\0' has |
3058 | * no special meaning. |
3059 | */ |
3060 | int |
3061 | compare(size_type __pos, size_type __n1, const _CharT* __s, |
3062 | size_type __n2) const; |
3063 | |
3064 | #if __cplusplus > 201703L |
3065 | bool |
3066 | starts_with(basic_string_view<_CharT, _Traits> __x) const noexcept |
3067 | { return __sv_type(this->data(), this->size()).starts_with(__x); } |
3068 | |
3069 | bool |
3070 | starts_with(_CharT __x) const noexcept |
3071 | { return __sv_type(this->data(), this->size()).starts_with(__x); } |
3072 | |
3073 | bool |
3074 | starts_with(const _CharT* __x) const noexcept |
3075 | { return __sv_type(this->data(), this->size()).starts_with(__x); } |
3076 | |
3077 | bool |
3078 | ends_with(basic_string_view<_CharT, _Traits> __x) const noexcept |
3079 | { return __sv_type(this->data(), this->size()).ends_with(__x); } |
3080 | |
3081 | bool |
3082 | ends_with(_CharT __x) const noexcept |
3083 | { return __sv_type(this->data(), this->size()).ends_with(__x); } |
3084 | |
3085 | bool |
3086 | ends_with(const _CharT* __x) const noexcept |
3087 | { return __sv_type(this->data(), this->size()).ends_with(__x); } |
3088 | #endif // C++20 |
3089 | |
3090 | #if __cplusplus > 202002L |
3091 | bool |
3092 | contains(basic_string_view<_CharT, _Traits> __x) const noexcept |
3093 | { return __sv_type(this->data(), this->size()).contains(__x); } |
3094 | |
3095 | bool |
3096 | contains(_CharT __x) const noexcept |
3097 | { return __sv_type(this->data(), this->size()).contains(__x); } |
3098 | |
3099 | bool |
3100 | contains(const _CharT* __x) const noexcept |
3101 | { return __sv_type(this->data(), this->size()).contains(__x); } |
3102 | #endif // C++23 |
3103 | |
3104 | // Allow basic_stringbuf::__xfer_bufptrs to call _M_length: |
3105 | template<typename, typename, typename> friend class basic_stringbuf; |
3106 | }; |
3107 | _GLIBCXX_END_NAMESPACE_CXX11 |
3108 | #else // !_GLIBCXX_USE_CXX11_ABI |
3109 | // Reference-counted COW string implentation |
3110 | |
3111 | /** |
3112 | * @class basic_string basic_string.h <string> |
3113 | * @brief Managing sequences of characters and character-like objects. |
3114 | * |
3115 | * @ingroup strings |
3116 | * @ingroup sequences |
3117 | * |
3118 | * @tparam _CharT Type of character |
3119 | * @tparam _Traits Traits for character type, defaults to |
3120 | * char_traits<_CharT>. |
3121 | * @tparam _Alloc Allocator type, defaults to allocator<_CharT>. |
3122 | * |
3123 | * Meets the requirements of a <a href="tables.html#65">container</a>, a |
3124 | * <a href="tables.html#66">reversible container</a>, and a |
3125 | * <a href="tables.html#67">sequence</a>. Of the |
3126 | * <a href="tables.html#68">optional sequence requirements</a>, only |
3127 | * @c push_back, @c at, and @c %array access are supported. |
3128 | * |
3129 | * @doctodo |
3130 | * |
3131 | * |
3132 | * Documentation? What's that? |
3133 | * Nathan Myers <ncm@cantrip.org>. |
3134 | * |
3135 | * A string looks like this: |
3136 | * |
3137 | * @code |
3138 | * [_Rep] |
3139 | * _M_length |
3140 | * [basic_string<char_type>] _M_capacity |
3141 | * _M_dataplus _M_refcount |
3142 | * _M_p ----------------> unnamed array of char_type |
3143 | * @endcode |
3144 | * |
3145 | * Where the _M_p points to the first character in the string, and |
3146 | * you cast it to a pointer-to-_Rep and subtract 1 to get a |
3147 | * pointer to the header. |
3148 | * |
3149 | * This approach has the enormous advantage that a string object |
3150 | * requires only one allocation. All the ugliness is confined |
3151 | * within a single %pair of inline functions, which each compile to |
3152 | * a single @a add instruction: _Rep::_M_data(), and |
3153 | * string::_M_rep(); and the allocation function which gets a |
3154 | * block of raw bytes and with room enough and constructs a _Rep |
3155 | * object at the front. |
3156 | * |
3157 | * The reason you want _M_data pointing to the character %array and |
3158 | * not the _Rep is so that the debugger can see the string |
3159 | * contents. (Probably we should add a non-inline member to get |
3160 | * the _Rep for the debugger to use, so users can check the actual |
3161 | * string length.) |
3162 | * |
3163 | * Note that the _Rep object is a POD so that you can have a |
3164 | * static <em>empty string</em> _Rep object already @a constructed before |
3165 | * static constructors have run. The reference-count encoding is |
3166 | * chosen so that a 0 indicates one reference, so you never try to |
3167 | * destroy the empty-string _Rep object. |
3168 | * |
3169 | * All but the last paragraph is considered pretty conventional |
3170 | * for a C++ string implementation. |
3171 | */ |
3172 | // 21.3 Template class basic_string |
3173 | template<typename _CharT, typename _Traits, typename _Alloc> |
3174 | class basic_string |
3175 | { |
3176 | typedef typename __gnu_cxx::__alloc_traits<_Alloc>::template |
3177 | rebind<_CharT>::other _CharT_alloc_type; |
3178 | typedef __gnu_cxx::__alloc_traits<_CharT_alloc_type> _CharT_alloc_traits; |
3179 | |
3180 | // Types: |
3181 | public: |
3182 | typedef _Traits traits_type; |
3183 | typedef typename _Traits::char_type value_type; |
3184 | typedef _Alloc allocator_type; |
3185 | typedef typename _CharT_alloc_traits::size_type size_type; |
3186 | typedef typename _CharT_alloc_traits::difference_type difference_type; |
3187 | #if __cplusplus < 201103L |
3188 | typedef typename _CharT_alloc_type::reference reference; |
3189 | typedef typename _CharT_alloc_type::const_reference const_reference; |
3190 | #else |
3191 | typedef value_type& reference; |
3192 | typedef const value_type& const_reference; |
3193 | #endif |
3194 | typedef typename _CharT_alloc_traits::pointer pointer; |
3195 | typedef typename _CharT_alloc_traits::const_pointer const_pointer; |
3196 | typedef __gnu_cxx::__normal_iterator<pointer, basic_string> iterator; |
3197 | typedef __gnu_cxx::__normal_iterator<const_pointer, basic_string> |
3198 | const_iterator; |
3199 | typedef std::reverse_iterator<const_iterator> const_reverse_iterator; |
3200 | typedef std::reverse_iterator<iterator> reverse_iterator; |
3201 | |
3202 | protected: |
3203 | // type used for positions in insert, erase etc. |
3204 | typedef iterator __const_iterator; |
3205 | |
3206 | private: |
3207 | // _Rep: string representation |
3208 | // Invariants: |
3209 | // 1. String really contains _M_length + 1 characters: due to 21.3.4 |
3210 | // must be kept null-terminated. |
3211 | // 2. _M_capacity >= _M_length |
3212 | // Allocated memory is always (_M_capacity + 1) * sizeof(_CharT). |
3213 | // 3. _M_refcount has three states: |
3214 | // -1: leaked, one reference, no ref-copies allowed, non-const. |
3215 | // 0: one reference, non-const. |
3216 | // n>0: n + 1 references, operations require a lock, const. |
3217 | // 4. All fields==0 is an empty string, given the extra storage |
3218 | // beyond-the-end for a null terminator; thus, the shared |
3219 | // empty string representation needs no constructor. |
3220 | |
3221 | struct _Rep_base |
3222 | { |
3223 | size_type _M_length; |
3224 | size_type _M_capacity; |
3225 | _Atomic_word _M_refcount; |
3226 | }; |
3227 | |
3228 | struct _Rep : _Rep_base |
3229 | { |
3230 | // Types: |
3231 | typedef typename __gnu_cxx::__alloc_traits<_Alloc>::template |
3232 | rebind<char>::other _Raw_bytes_alloc; |
3233 | |
3234 | // (Public) Data members: |
3235 | |
3236 | // The maximum number of individual char_type elements of an |
3237 | // individual string is determined by _S_max_size. This is the |
3238 | // value that will be returned by max_size(). (Whereas npos |
3239 | // is the maximum number of bytes the allocator can allocate.) |
3240 | // If one was to divvy up the theoretical largest size string, |
3241 | // with a terminating character and m _CharT elements, it'd |
3242 | // look like this: |
3243 | // npos = sizeof(_Rep) + (m * sizeof(_CharT)) + sizeof(_CharT) |
3244 | // Solving for m: |
3245 | // m = ((npos - sizeof(_Rep))/sizeof(CharT)) - 1 |
3246 | // In addition, this implementation quarters this amount. |
3247 | static const size_type _S_max_size; |
3248 | static const _CharT _S_terminal; |
3249 | |
3250 | // The following storage is init'd to 0 by the linker, resulting |
3251 | // (carefully) in an empty string with one reference. |
3252 | static size_type _S_empty_rep_storage[]; |
3253 | |
3254 | static _Rep& |
3255 | _S_empty_rep() _GLIBCXX_NOEXCEPT |
3256 | { |
3257 | // NB: Mild hack to avoid strict-aliasing warnings. Note that |
3258 | // _S_empty_rep_storage is never modified and the punning should |
3259 | // be reasonably safe in this case. |
3260 | void* __p = reinterpret_cast<void*>(&_S_empty_rep_storage); |
3261 | return *reinterpret_cast<_Rep*>(__p); |
3262 | } |
3263 | |
3264 | bool |
3265 | _M_is_leaked() const _GLIBCXX_NOEXCEPT |
3266 | { |
3267 | #if defined(__GTHREADS) |
3268 | // _M_refcount is mutated concurrently by _M_refcopy/_M_dispose, |
3269 | // so we need to use an atomic load. However, _M_is_leaked |
3270 | // predicate does not change concurrently (i.e. the string is either |
3271 | // leaked or not), so a relaxed load is enough. |
3272 | return __atomic_load_n(&this->_M_refcount, __ATOMIC_RELAXED) < 0; |
3273 | #else |
3274 | return this->_M_refcount < 0; |
3275 | #endif |
3276 | } |
3277 | |
3278 | bool |
3279 | _M_is_shared() const _GLIBCXX_NOEXCEPT |
3280 | { |
3281 | #if defined(__GTHREADS) |
3282 | // _M_refcount is mutated concurrently by _M_refcopy/_M_dispose, |
3283 | // so we need to use an atomic load. Another thread can drop last |
3284 | // but one reference concurrently with this check, so we need this |
3285 | // load to be acquire to synchronize with release fetch_and_add in |
3286 | // _M_dispose. |
3287 | return __atomic_load_n(&this->_M_refcount, __ATOMIC_ACQUIRE) > 0; |
3288 | #else |
3289 | return this->_M_refcount > 0; |
3290 | #endif |
3291 | } |
3292 | |
3293 | void |
3294 | _M_set_leaked() _GLIBCXX_NOEXCEPT |
3295 | { this->_M_refcount = -1; } |
3296 | |
3297 | void |
3298 | _M_set_sharable() _GLIBCXX_NOEXCEPT |
3299 | { this->_M_refcount = 0; } |
3300 | |
3301 | void |
3302 | _M_set_length_and_sharable(size_type __n) _GLIBCXX_NOEXCEPT |
3303 | { |
3304 | #if _GLIBCXX_FULLY_DYNAMIC_STRING == 0 |
3305 | if (__builtin_expect(this != &_S_empty_rep(), false)) |
3306 | #endif |
3307 | { |
3308 | this->_M_set_sharable(); // One reference. |
3309 | this->_M_length = __n; |
3310 | traits_type::assign(this->_M_refdata()[__n], _S_terminal); |
3311 | // grrr. (per 21.3.4) |
3312 | // You cannot leave those LWG people alone for a second. |
3313 | } |
3314 | } |
3315 | |
3316 | _CharT* |
3317 | _M_refdata() throw() |
3318 | { return reinterpret_cast<_CharT*>(this + 1); } |
3319 | |
3320 | _CharT* |
3321 | _M_grab(const _Alloc& __alloc1, const _Alloc& __alloc2) |
3322 | { |
3323 | return (!_M_is_leaked() && __alloc1 == __alloc2) |
3324 | ? _M_refcopy() : _M_clone(__alloc1); |
3325 | } |
3326 | |
3327 | // Create & Destroy |
3328 | static _Rep* |
3329 | _S_create(size_type, size_type, const _Alloc&); |
3330 | |
3331 | void |
3332 | _M_dispose(const _Alloc& __a) _GLIBCXX_NOEXCEPT |
3333 | { |
3334 | #if _GLIBCXX_FULLY_DYNAMIC_STRING == 0 |
3335 | if (__builtin_expect(this != &_S_empty_rep(), false)) |
3336 | #endif |
3337 | { |
3338 | // Be race-detector-friendly. For more info see bits/c++config. |
3339 | _GLIBCXX_SYNCHRONIZATION_HAPPENS_BEFORE(&this->_M_refcount); |
3340 | // Decrement of _M_refcount is acq_rel, because: |
3341 | // - all but last decrements need to release to synchronize with |
3342 | // the last decrement that will delete the object. |
3343 | // - the last decrement needs to acquire to synchronize with |
3344 | // all the previous decrements. |
3345 | // - last but one decrement needs to release to synchronize with |
3346 | // the acquire load in _M_is_shared that will conclude that |
3347 | // the object is not shared anymore. |
3348 | if (__gnu_cxx::__exchange_and_add_dispatch(&this->_M_refcount, |
3349 | -1) <= 0) |
3350 | { |
3351 | _GLIBCXX_SYNCHRONIZATION_HAPPENS_AFTER(&this->_M_refcount); |
3352 | _M_destroy(__a); |
3353 | } |
3354 | } |
3355 | } // XXX MT |
3356 | |
3357 | void |
3358 | _M_destroy(const _Alloc&) throw(); |
3359 | |
3360 | _CharT* |
3361 | _M_refcopy() throw() |
3362 | { |
3363 | #if _GLIBCXX_FULLY_DYNAMIC_STRING == 0 |
3364 | if (__builtin_expect(this != &_S_empty_rep(), false)) |
3365 | #endif |
3366 | __gnu_cxx::__atomic_add_dispatch(&this->_M_refcount, 1); |
3367 | return _M_refdata(); |
3368 | } // XXX MT |
3369 | |
3370 | _CharT* |
3371 | _M_clone(const _Alloc&, size_type __res = 0); |
3372 | }; |
3373 | |
3374 | // Use empty-base optimization: http://www.cantrip.org/emptyopt.html |
3375 | struct _Alloc_hider : _Alloc |
3376 | { |
3377 | _Alloc_hider(_CharT* __dat, const _Alloc& __a) _GLIBCXX_NOEXCEPT |
3378 | : _Alloc(__a), _M_p(__dat) { } |
3379 | |
3380 | _CharT* _M_p; // The actual data. |
3381 | }; |
3382 | |
3383 | public: |
3384 | // Data Members (public): |
3385 | // NB: This is an unsigned type, and thus represents the maximum |
3386 | // size that the allocator can hold. |
3387 | /// Value returned by various member functions when they fail. |
3388 | static const size_type npos = static_cast<size_type>(-1); |
3389 | |
3390 | private: |
3391 | // Data Members (private): |
3392 | mutable _Alloc_hider _M_dataplus; |
3393 | |
3394 | _CharT* |
3395 | _M_data() const _GLIBCXX_NOEXCEPT |
3396 | { return _M_dataplus._M_p; } |
3397 | |
3398 | _CharT* |
3399 | _M_data(_CharT* __p) _GLIBCXX_NOEXCEPT |
3400 | { return (_M_dataplus._M_p = __p); } |
3401 | |
3402 | _Rep* |
3403 | _M_rep() const _GLIBCXX_NOEXCEPT |
3404 | { return &((reinterpret_cast<_Rep*> (_M_data()))[-1]); } |
3405 | |
3406 | // For the internal use we have functions similar to `begin'/`end' |
3407 | // but they do not call _M_leak. |
3408 | iterator |
3409 | _M_ibegin() const _GLIBCXX_NOEXCEPT |
3410 | { return iterator(_M_data()); } |
3411 | |
3412 | iterator |
3413 | _M_iend() const _GLIBCXX_NOEXCEPT |
3414 | { return iterator(_M_data() + this->size()); } |
3415 | |
3416 | void |
3417 | _M_leak() // for use in begin() & non-const op[] |
3418 | { |
3419 | if (!_M_rep()->_M_is_leaked()) |
3420 | _M_leak_hard(); |
3421 | } |
3422 | |
3423 | size_type |
3424 | _M_check(size_type __pos, const char* __s) const |
3425 | { |
3426 | if (__pos > this->size()) |
3427 | __throw_out_of_range_fmt(__N("%s: __pos (which is %zu) > " |
3428 | "this->size() (which is %zu)" ), |
3429 | __s, __pos, this->size()); |
3430 | return __pos; |
3431 | } |
3432 | |
3433 | void |
3434 | _M_check_length(size_type __n1, size_type __n2, const char* __s) const |
3435 | { |
3436 | if (this->max_size() - (this->size() - __n1) < __n2) |
3437 | __throw_length_error(__N(__s)); |
3438 | } |
3439 | |
3440 | // NB: _M_limit doesn't check for a bad __pos value. |
3441 | size_type |
3442 | _M_limit(size_type __pos, size_type __off) const _GLIBCXX_NOEXCEPT |
3443 | { |
3444 | const bool __testoff = __off < this->size() - __pos; |
3445 | return __testoff ? __off : this->size() - __pos; |
3446 | } |
3447 | |
3448 | // True if _Rep and source do not overlap. |
3449 | bool |
3450 | _M_disjunct(const _CharT* __s) const _GLIBCXX_NOEXCEPT |
3451 | { |
3452 | return (less<const _CharT*>()(__s, _M_data()) |
3453 | || less<const _CharT*>()(_M_data() + this->size(), __s)); |
3454 | } |
3455 | |
3456 | // When __n = 1 way faster than the general multichar |
3457 | // traits_type::copy/move/assign. |
3458 | static void |
3459 | _M_copy(_CharT* __d, const _CharT* __s, size_type __n) _GLIBCXX_NOEXCEPT |
3460 | { |
3461 | if (__n == 1) |
3462 | traits_type::assign(*__d, *__s); |
3463 | else |
3464 | traits_type::copy(__d, __s, __n); |
3465 | } |
3466 | |
3467 | static void |
3468 | _M_move(_CharT* __d, const _CharT* __s, size_type __n) _GLIBCXX_NOEXCEPT |
3469 | { |
3470 | if (__n == 1) |
3471 | traits_type::assign(*__d, *__s); |
3472 | else |
3473 | traits_type::move(__d, __s, __n); |
3474 | } |
3475 | |
3476 | static void |
3477 | _M_assign(_CharT* __d, size_type __n, _CharT __c) _GLIBCXX_NOEXCEPT |
3478 | { |
3479 | if (__n == 1) |
3480 | traits_type::assign(*__d, __c); |
3481 | else |
3482 | traits_type::assign(__d, __n, __c); |
3483 | } |
3484 | |
3485 | // _S_copy_chars is a separate template to permit specialization |
3486 | // to optimize for the common case of pointers as iterators. |
3487 | template<class _Iterator> |
3488 | static void |
3489 | _S_copy_chars(_CharT* __p, _Iterator __k1, _Iterator __k2) |
3490 | { |
3491 | for (; __k1 != __k2; ++__k1, (void)++__p) |
3492 | traits_type::assign(*__p, *__k1); // These types are off. |
3493 | } |
3494 | |
3495 | static void |
3496 | _S_copy_chars(_CharT* __p, iterator __k1, iterator __k2) _GLIBCXX_NOEXCEPT |
3497 | { _S_copy_chars(__p, __k1.base(), __k2.base()); } |
3498 | |
3499 | static void |
3500 | _S_copy_chars(_CharT* __p, const_iterator __k1, const_iterator __k2) |
3501 | _GLIBCXX_NOEXCEPT |
3502 | { _S_copy_chars(__p, __k1.base(), __k2.base()); } |
3503 | |
3504 | static void |
3505 | _S_copy_chars(_CharT* __p, _CharT* __k1, _CharT* __k2) _GLIBCXX_NOEXCEPT |
3506 | { _M_copy(__p, __k1, __k2 - __k1); } |
3507 | |
3508 | static void |
3509 | _S_copy_chars(_CharT* __p, const _CharT* __k1, const _CharT* __k2) |
3510 | _GLIBCXX_NOEXCEPT |
3511 | { _M_copy(__p, __k1, __k2 - __k1); } |
3512 | |
3513 | static int |
3514 | _S_compare(size_type __n1, size_type __n2) _GLIBCXX_NOEXCEPT |
3515 | { |
3516 | const difference_type __d = difference_type(__n1 - __n2); |
3517 | |
3518 | if (__d > __gnu_cxx::__numeric_traits<int>::__max) |
3519 | return __gnu_cxx::__numeric_traits<int>::__max; |
3520 | else if (__d < __gnu_cxx::__numeric_traits<int>::__min) |
3521 | return __gnu_cxx::__numeric_traits<int>::__min; |
3522 | else |
3523 | return int(__d); |
3524 | } |
3525 | |
3526 | void |
3527 | _M_mutate(size_type __pos, size_type __len1, size_type __len2); |
3528 | |
3529 | void |
3530 | _M_leak_hard(); |
3531 | |
3532 | static _Rep& |
3533 | _S_empty_rep() _GLIBCXX_NOEXCEPT |
3534 | { return _Rep::_S_empty_rep(); } |
3535 | |
3536 | #if __cplusplus >= 201703L |
3537 | // A helper type for avoiding boiler-plate. |
3538 | typedef basic_string_view<_CharT, _Traits> __sv_type; |
3539 | |
3540 | template<typename _Tp, typename _Res> |
3541 | using _If_sv = enable_if_t< |
3542 | __and_<is_convertible<const _Tp&, __sv_type>, |
3543 | __not_<is_convertible<const _Tp*, const basic_string*>>, |
3544 | __not_<is_convertible<const _Tp&, const _CharT*>>>::value, |
3545 | _Res>; |
3546 | |
3547 | // Allows an implicit conversion to __sv_type. |
3548 | static __sv_type |
3549 | _S_to_string_view(__sv_type __svt) noexcept |
3550 | { return __svt; } |
3551 | |
3552 | // Wraps a string_view by explicit conversion and thus |
3553 | // allows to add an internal constructor that does not |
3554 | // participate in overload resolution when a string_view |
3555 | // is provided. |
3556 | struct __sv_wrapper |
3557 | { |
3558 | explicit __sv_wrapper(__sv_type __sv) noexcept : _M_sv(__sv) { } |
3559 | __sv_type _M_sv; |
3560 | }; |
3561 | |
3562 | /** |
3563 | * @brief Only internally used: Construct string from a string view |
3564 | * wrapper. |
3565 | * @param __svw string view wrapper. |
3566 | * @param __a Allocator to use. |
3567 | */ |
3568 | explicit |
3569 | basic_string(__sv_wrapper __svw, const _Alloc& __a) |
3570 | : basic_string(__svw._M_sv.data(), __svw._M_sv.size(), __a) { } |
3571 | #endif |
3572 | |
3573 | public: |
3574 | // Construct/copy/destroy: |
3575 | // NB: We overload ctors in some cases instead of using default |
3576 | // arguments, per 17.4.4.4 para. 2 item 2. |
3577 | |
3578 | /** |
3579 | * @brief Default constructor creates an empty string. |
3580 | */ |
3581 | basic_string() |
3582 | #if _GLIBCXX_FULLY_DYNAMIC_STRING == 0 |
3583 | _GLIBCXX_NOEXCEPT |
3584 | : _M_dataplus(_S_empty_rep()._M_refdata(), _Alloc()) |
3585 | #else |
3586 | : _M_dataplus(_S_construct(size_type(), _CharT(), _Alloc()), _Alloc()) |
3587 | #endif |
3588 | { } |
3589 | |
3590 | /** |
3591 | * @brief Construct an empty string using allocator @a a. |
3592 | */ |
3593 | explicit |
3594 | basic_string(const _Alloc& __a) |
3595 | : _M_dataplus(_S_construct(size_type(), _CharT(), __a), __a) |
3596 | { } |
3597 | |
3598 | // NB: per LWG issue 42, semantics different from IS: |
3599 | /** |
3600 | * @brief Construct string with copy of value of @a str. |
3601 | * @param __str Source string. |
3602 | */ |
3603 | basic_string(const basic_string& __str) |
3604 | : _M_dataplus(__str._M_rep()->_M_grab(_Alloc(__str.get_allocator()), |
3605 | __str.get_allocator()), |
3606 | __str.get_allocator()) |
3607 | { } |
3608 | |
3609 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
3610 | // 2583. no way to supply an allocator for basic_string(str, pos) |
3611 | /** |
3612 | * @brief Construct string as copy of a substring. |
3613 | * @param __str Source string. |
3614 | * @param __pos Index of first character to copy from. |
3615 | * @param __a Allocator to use. |
3616 | */ |
3617 | basic_string(const basic_string& __str, size_type __pos, |
3618 | const _Alloc& __a = _Alloc()); |
3619 | |
3620 | /** |
3621 | * @brief Construct string as copy of a substring. |
3622 | * @param __str Source string. |
3623 | * @param __pos Index of first character to copy from. |
3624 | * @param __n Number of characters to copy. |
3625 | */ |
3626 | basic_string(const basic_string& __str, size_type __pos, |
3627 | size_type __n); |
3628 | /** |
3629 | * @brief Construct string as copy of a substring. |
3630 | * @param __str Source string. |
3631 | * @param __pos Index of first character to copy from. |
3632 | * @param __n Number of characters to copy. |
3633 | * @param __a Allocator to use. |
3634 | */ |
3635 | basic_string(const basic_string& __str, size_type __pos, |
3636 | size_type __n, const _Alloc& __a); |
3637 | |
3638 | /** |
3639 | * @brief Construct string initialized by a character %array. |
3640 | * @param __s Source character %array. |
3641 | * @param __n Number of characters to copy. |
3642 | * @param __a Allocator to use (default is default allocator). |
3643 | * |
3644 | * NB: @a __s must have at least @a __n characters, '\\0' |
3645 | * has no special meaning. |
3646 | */ |
3647 | basic_string(const _CharT* __s, size_type __n, |
3648 | const _Alloc& __a = _Alloc()) |
3649 | : _M_dataplus(_S_construct(__s, __s + __n, __a), __a) |
3650 | { } |
3651 | |
3652 | /** |
3653 | * @brief Construct string as copy of a C string. |
3654 | * @param __s Source C string. |
3655 | * @param __a Allocator to use (default is default allocator). |
3656 | */ |
3657 | #if __cpp_deduction_guides && ! defined _GLIBCXX_DEFINING_STRING_INSTANTIATIONS |
3658 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
3659 | // 3076. basic_string CTAD ambiguity |
3660 | template<typename = _RequireAllocator<_Alloc>> |
3661 | #endif |
3662 | basic_string(const _CharT* __s, const _Alloc& __a = _Alloc()) |
3663 | : _M_dataplus(_S_construct(__s, __s ? __s + traits_type::length(__s) : |
3664 | __s + npos, __a), __a) |
3665 | { } |
3666 | |
3667 | /** |
3668 | * @brief Construct string as multiple characters. |
3669 | * @param __n Number of characters. |
3670 | * @param __c Character to use. |
3671 | * @param __a Allocator to use (default is default allocator). |
3672 | */ |
3673 | basic_string(size_type __n, _CharT __c, const _Alloc& __a = _Alloc()) |
3674 | : _M_dataplus(_S_construct(__n, __c, __a), __a) |
3675 | { } |
3676 | |
3677 | #if __cplusplus >= 201103L |
3678 | /** |
3679 | * @brief Move construct string. |
3680 | * @param __str Source string. |
3681 | * |
3682 | * The newly-created string contains the exact contents of @a __str. |
3683 | * @a __str is a valid, but unspecified string. |
3684 | */ |
3685 | basic_string(basic_string&& __str) |
3686 | #if _GLIBCXX_FULLY_DYNAMIC_STRING == 0 |
3687 | noexcept // FIXME C++11: should always be noexcept. |
3688 | #endif |
3689 | : _M_dataplus(std::move(__str._M_dataplus)) |
3690 | { |
3691 | #if _GLIBCXX_FULLY_DYNAMIC_STRING == 0 |
3692 | __str._M_data(_S_empty_rep()._M_refdata()); |
3693 | #else |
3694 | __str._M_data(_S_construct(size_type(), _CharT(), get_allocator())); |
3695 | #endif |
3696 | } |
3697 | |
3698 | /** |
3699 | * @brief Construct string from an initializer %list. |
3700 | * @param __l std::initializer_list of characters. |
3701 | * @param __a Allocator to use (default is default allocator). |
3702 | */ |
3703 | basic_string(initializer_list<_CharT> __l, const _Alloc& __a = _Alloc()) |
3704 | : _M_dataplus(_S_construct(__l.begin(), __l.end(), __a), __a) |
3705 | { } |
3706 | |
3707 | basic_string(const basic_string& __str, const _Alloc& __a) |
3708 | : _M_dataplus(__str._M_rep()->_M_grab(__a, __str.get_allocator()), __a) |
3709 | { } |
3710 | |
3711 | basic_string(basic_string&& __str, const _Alloc& __a) |
3712 | : _M_dataplus(__str._M_data(), __a) |
3713 | { |
3714 | if (__a == __str.get_allocator()) |
3715 | { |
3716 | #if _GLIBCXX_FULLY_DYNAMIC_STRING == 0 |
3717 | __str._M_data(_S_empty_rep()._M_refdata()); |
3718 | #else |
3719 | __str._M_data(_S_construct(size_type(), _CharT(), __a)); |
3720 | #endif |
3721 | } |
3722 | else |
3723 | _M_dataplus._M_p = _S_construct(__str.begin(), __str.end(), __a); |
3724 | } |
3725 | #endif // C++11 |
3726 | |
3727 | /** |
3728 | * @brief Construct string as copy of a range. |
3729 | * @param __beg Start of range. |
3730 | * @param __end End of range. |
3731 | * @param __a Allocator to use (default is default allocator). |
3732 | */ |
3733 | template<class _InputIterator> |
3734 | basic_string(_InputIterator __beg, _InputIterator __end, |
3735 | const _Alloc& __a = _Alloc()) |
3736 | : _M_dataplus(_S_construct(__beg, __end, __a), __a) |
3737 | { } |
3738 | |
3739 | #if __cplusplus >= 201703L |
3740 | /** |
3741 | * @brief Construct string from a substring of a string_view. |
3742 | * @param __t Source object convertible to string view. |
3743 | * @param __pos The index of the first character to copy from __t. |
3744 | * @param __n The number of characters to copy from __t. |
3745 | * @param __a Allocator to use. |
3746 | */ |
3747 | template<typename _Tp, |
3748 | typename = enable_if_t<is_convertible_v<const _Tp&, __sv_type>>> |
3749 | basic_string(const _Tp& __t, size_type __pos, size_type __n, |
3750 | const _Alloc& __a = _Alloc()) |
3751 | : basic_string(_S_to_string_view(__t).substr(__pos, __n), __a) { } |
3752 | |
3753 | /** |
3754 | * @brief Construct string from a string_view. |
3755 | * @param __t Source object convertible to string view. |
3756 | * @param __a Allocator to use (default is default allocator). |
3757 | */ |
3758 | template<typename _Tp, typename = _If_sv<_Tp, void>> |
3759 | explicit |
3760 | basic_string(const _Tp& __t, const _Alloc& __a = _Alloc()) |
3761 | : basic_string(__sv_wrapper(_S_to_string_view(__t)), __a) { } |
3762 | #endif // C++17 |
3763 | |
3764 | /** |
3765 | * @brief Destroy the string instance. |
3766 | */ |
3767 | ~basic_string() _GLIBCXX_NOEXCEPT |
3768 | { _M_rep()->_M_dispose(this->get_allocator()); } |
3769 | |
3770 | /** |
3771 | * @brief Assign the value of @a str to this string. |
3772 | * @param __str Source string. |
3773 | */ |
3774 | basic_string& |
3775 | operator=(const basic_string& __str) |
3776 | { return this->assign(__str); } |
3777 | |
3778 | /** |
3779 | * @brief Copy contents of @a s into this string. |
3780 | * @param __s Source null-terminated string. |
3781 | */ |
3782 | basic_string& |
3783 | operator=(const _CharT* __s) |
3784 | { return this->assign(__s); } |
3785 | |
3786 | /** |
3787 | * @brief Set value to string of length 1. |
3788 | * @param __c Source character. |
3789 | * |
3790 | * Assigning to a character makes this string length 1 and |
3791 | * (*this)[0] == @a c. |
3792 | */ |
3793 | basic_string& |
3794 | operator=(_CharT __c) |
3795 | { |
3796 | this->assign(1, __c); |
3797 | return *this; |
3798 | } |
3799 | |
3800 | #if __cplusplus >= 201103L |
3801 | /** |
3802 | * @brief Move assign the value of @a str to this string. |
3803 | * @param __str Source string. |
3804 | * |
3805 | * The contents of @a str are moved into this string (without copying). |
3806 | * @a str is a valid, but unspecified string. |
3807 | */ |
3808 | basic_string& |
3809 | operator=(basic_string&& __str) |
3810 | _GLIBCXX_NOEXCEPT_IF(allocator_traits<_Alloc>::is_always_equal::value) |
3811 | { |
3812 | // NB: DR 1204. |
3813 | this->swap(__str); |
3814 | return *this; |
3815 | } |
3816 | |
3817 | /** |
3818 | * @brief Set value to string constructed from initializer %list. |
3819 | * @param __l std::initializer_list. |
3820 | */ |
3821 | basic_string& |
3822 | operator=(initializer_list<_CharT> __l) |
3823 | { |
3824 | this->assign(__l.begin(), __l.size()); |
3825 | return *this; |
3826 | } |
3827 | #endif // C++11 |
3828 | |
3829 | #if __cplusplus >= 201703L |
3830 | /** |
3831 | * @brief Set value to string constructed from a string_view. |
3832 | * @param __svt An object convertible to string_view. |
3833 | */ |
3834 | template<typename _Tp> |
3835 | _If_sv<_Tp, basic_string&> |
3836 | operator=(const _Tp& __svt) |
3837 | { return this->assign(__svt); } |
3838 | |
3839 | /** |
3840 | * @brief Convert to a string_view. |
3841 | * @return A string_view. |
3842 | */ |
3843 | operator __sv_type() const noexcept |
3844 | { return __sv_type(data(), size()); } |
3845 | #endif // C++17 |
3846 | |
3847 | // Iterators: |
3848 | /** |
3849 | * Returns a read/write iterator that points to the first character in |
3850 | * the %string. Unshares the string. |
3851 | */ |
3852 | iterator |
3853 | begin() // FIXME C++11: should be noexcept. |
3854 | { |
3855 | _M_leak(); |
3856 | return iterator(_M_data()); |
3857 | } |
3858 | |
3859 | /** |
3860 | * Returns a read-only (constant) iterator that points to the first |
3861 | * character in the %string. |
3862 | */ |
3863 | const_iterator |
3864 | begin() const _GLIBCXX_NOEXCEPT |
3865 | { return const_iterator(_M_data()); } |
3866 | |
3867 | /** |
3868 | * Returns a read/write iterator that points one past the last |
3869 | * character in the %string. Unshares the string. |
3870 | */ |
3871 | iterator |
3872 | end() // FIXME C++11: should be noexcept. |
3873 | { |
3874 | _M_leak(); |
3875 | return iterator(_M_data() + this->size()); |
3876 | } |
3877 | |
3878 | /** |
3879 | * Returns a read-only (constant) iterator that points one past the |
3880 | * last character in the %string. |
3881 | */ |
3882 | const_iterator |
3883 | end() const _GLIBCXX_NOEXCEPT |
3884 | { return const_iterator(_M_data() + this->size()); } |
3885 | |
3886 | /** |
3887 | * Returns a read/write reverse iterator that points to the last |
3888 | * character in the %string. Iteration is done in reverse element |
3889 | * order. Unshares the string. |
3890 | */ |
3891 | reverse_iterator |
3892 | rbegin() // FIXME C++11: should be noexcept. |
3893 | { return reverse_iterator(this->end()); } |
3894 | |
3895 | /** |
3896 | * Returns a read-only (constant) reverse iterator that points |
3897 | * to the last character in the %string. Iteration is done in |
3898 | * reverse element order. |
3899 | */ |
3900 | const_reverse_iterator |
3901 | rbegin() const _GLIBCXX_NOEXCEPT |
3902 | { return const_reverse_iterator(this->end()); } |
3903 | |
3904 | /** |
3905 | * Returns a read/write reverse iterator that points to one before the |
3906 | * first character in the %string. Iteration is done in reverse |
3907 | * element order. Unshares the string. |
3908 | */ |
3909 | reverse_iterator |
3910 | rend() // FIXME C++11: should be noexcept. |
3911 | { return reverse_iterator(this->begin()); } |
3912 | |
3913 | /** |
3914 | * Returns a read-only (constant) reverse iterator that points |
3915 | * to one before the first character in the %string. Iteration |
3916 | * is done in reverse element order. |
3917 | */ |
3918 | const_reverse_iterator |
3919 | rend() const _GLIBCXX_NOEXCEPT |
3920 | { return const_reverse_iterator(this->begin()); } |
3921 | |
3922 | #if __cplusplus >= 201103L |
3923 | /** |
3924 | * Returns a read-only (constant) iterator that points to the first |
3925 | * character in the %string. |
3926 | */ |
3927 | const_iterator |
3928 | cbegin() const noexcept |
3929 | { return const_iterator(this->_M_data()); } |
3930 | |
3931 | /** |
3932 | * Returns a read-only (constant) iterator that points one past the |
3933 | * last character in the %string. |
3934 | */ |
3935 | const_iterator |
3936 | cend() const noexcept |
3937 | { return const_iterator(this->_M_data() + this->size()); } |
3938 | |
3939 | /** |
3940 | * Returns a read-only (constant) reverse iterator that points |
3941 | * to the last character in the %string. Iteration is done in |
3942 | * reverse element order. |
3943 | */ |
3944 | const_reverse_iterator |
3945 | crbegin() const noexcept |
3946 | { return const_reverse_iterator(this->end()); } |
3947 | |
3948 | /** |
3949 | * Returns a read-only (constant) reverse iterator that points |
3950 | * to one before the first character in the %string. Iteration |
3951 | * is done in reverse element order. |
3952 | */ |
3953 | const_reverse_iterator |
3954 | crend() const noexcept |
3955 | { return const_reverse_iterator(this->begin()); } |
3956 | #endif |
3957 | |
3958 | public: |
3959 | // Capacity: |
3960 | /// Returns the number of characters in the string, not including any |
3961 | /// null-termination. |
3962 | size_type |
3963 | size() const _GLIBCXX_NOEXCEPT |
3964 | { return _M_rep()->_M_length; } |
3965 | |
3966 | /// Returns the number of characters in the string, not including any |
3967 | /// null-termination. |
3968 | size_type |
3969 | length() const _GLIBCXX_NOEXCEPT |
3970 | { return _M_rep()->_M_length; } |
3971 | |
3972 | /// Returns the size() of the largest possible %string. |
3973 | size_type |
3974 | max_size() const _GLIBCXX_NOEXCEPT |
3975 | { return _Rep::_S_max_size; } |
3976 | |
3977 | /** |
3978 | * @brief Resizes the %string to the specified number of characters. |
3979 | * @param __n Number of characters the %string should contain. |
3980 | * @param __c Character to fill any new elements. |
3981 | * |
3982 | * This function will %resize the %string to the specified |
3983 | * number of characters. If the number is smaller than the |
3984 | * %string's current size the %string is truncated, otherwise |
3985 | * the %string is extended and new elements are %set to @a __c. |
3986 | */ |
3987 | void |
3988 | resize(size_type __n, _CharT __c); |
3989 | |
3990 | /** |
3991 | * @brief Resizes the %string to the specified number of characters. |
3992 | * @param __n Number of characters the %string should contain. |
3993 | * |
3994 | * This function will resize the %string to the specified length. If |
3995 | * the new size is smaller than the %string's current size the %string |
3996 | * is truncated, otherwise the %string is extended and new characters |
3997 | * are default-constructed. For basic types such as char, this means |
3998 | * setting them to 0. |
3999 | */ |
4000 | void |
4001 | resize(size_type __n) |
4002 | { this->resize(__n, _CharT()); } |
4003 | |
4004 | #if __cplusplus >= 201103L |
4005 | #pragma GCC diagnostic push |
4006 | #pragma GCC diagnostic ignored "-Wdeprecated-declarations" |
4007 | /// A non-binding request to reduce capacity() to size(). |
4008 | void |
4009 | shrink_to_fit() noexcept |
4010 | { reserve(); } |
4011 | #pragma GCC diagnostic pop |
4012 | #endif |
4013 | |
4014 | /** |
4015 | * Returns the total number of characters that the %string can hold |
4016 | * before needing to allocate more memory. |
4017 | */ |
4018 | size_type |
4019 | capacity() const _GLIBCXX_NOEXCEPT |
4020 | { return _M_rep()->_M_capacity; } |
4021 | |
4022 | /** |
4023 | * @brief Attempt to preallocate enough memory for specified number of |
4024 | * characters. |
4025 | * @param __res_arg Number of characters required. |
4026 | * @throw std::length_error If @a __res_arg exceeds @c max_size(). |
4027 | * |
4028 | * This function attempts to reserve enough memory for the |
4029 | * %string to hold the specified number of characters. If the |
4030 | * number requested is more than max_size(), length_error is |
4031 | * thrown. |
4032 | * |
4033 | * The advantage of this function is that if optimal code is a |
4034 | * necessity and the user can determine the string length that will be |
4035 | * required, the user can reserve the memory in %advance, and thus |
4036 | * prevent a possible reallocation of memory and copying of %string |
4037 | * data. |
4038 | */ |
4039 | void |
4040 | reserve(size_type __res_arg); |
4041 | |
4042 | /// Equivalent to shrink_to_fit(). |
4043 | #if __cplusplus > 201703L |
4044 | [[deprecated("use shrink_to_fit() instead" )]] |
4045 | #endif |
4046 | void |
4047 | reserve(); |
4048 | |
4049 | /** |
4050 | * Erases the string, making it empty. |
4051 | */ |
4052 | #if _GLIBCXX_FULLY_DYNAMIC_STRING == 0 |
4053 | void |
4054 | clear() _GLIBCXX_NOEXCEPT |
4055 | { |
4056 | if (_M_rep()->_M_is_shared()) |
4057 | { |
4058 | _M_rep()->_M_dispose(this->get_allocator()); |
4059 | _M_data(_S_empty_rep()._M_refdata()); |
4060 | } |
4061 | else |
4062 | _M_rep()->_M_set_length_and_sharable(0); |
4063 | } |
4064 | #else |
4065 | // PR 56166: this should not throw. |
4066 | void |
4067 | clear() |
4068 | { _M_mutate(0, this->size(), 0); } |
4069 | #endif |
4070 | |
4071 | /** |
4072 | * Returns true if the %string is empty. Equivalent to |
4073 | * <code>*this == ""</code>. |
4074 | */ |
4075 | _GLIBCXX_NODISCARD bool |
4076 | empty() const _GLIBCXX_NOEXCEPT |
4077 | { return this->size() == 0; } |
4078 | |
4079 | // Element access: |
4080 | /** |
4081 | * @brief Subscript access to the data contained in the %string. |
4082 | * @param __pos The index of the character to access. |
4083 | * @return Read-only (constant) reference to the character. |
4084 | * |
4085 | * This operator allows for easy, array-style, data access. |
4086 | * Note that data access with this operator is unchecked and |
4087 | * out_of_range lookups are not defined. (For checked lookups |
4088 | * see at().) |
4089 | */ |
4090 | const_reference |
4091 | operator[] (size_type __pos) const _GLIBCXX_NOEXCEPT |
4092 | { |
4093 | __glibcxx_assert(__pos <= size()); |
4094 | return _M_data()[__pos]; |
4095 | } |
4096 | |
4097 | /** |
4098 | * @brief Subscript access to the data contained in the %string. |
4099 | * @param __pos The index of the character to access. |
4100 | * @return Read/write reference to the character. |
4101 | * |
4102 | * This operator allows for easy, array-style, data access. |
4103 | * Note that data access with this operator is unchecked and |
4104 | * out_of_range lookups are not defined. (For checked lookups |
4105 | * see at().) Unshares the string. |
4106 | */ |
4107 | reference |
4108 | operator[](size_type __pos) |
4109 | { |
4110 | // Allow pos == size() both in C++98 mode, as v3 extension, |
4111 | // and in C++11 mode. |
4112 | __glibcxx_assert(__pos <= size()); |
4113 | // In pedantic mode be strict in C++98 mode. |
4114 | _GLIBCXX_DEBUG_PEDASSERT(__cplusplus >= 201103L || __pos < size()); |
4115 | _M_leak(); |
4116 | return _M_data()[__pos]; |
4117 | } |
4118 | |
4119 | /** |
4120 | * @brief Provides access to the data contained in the %string. |
4121 | * @param __n The index of the character to access. |
4122 | * @return Read-only (const) reference to the character. |
4123 | * @throw std::out_of_range If @a n is an invalid index. |
4124 | * |
4125 | * This function provides for safer data access. The parameter is |
4126 | * first checked that it is in the range of the string. The function |
4127 | * throws out_of_range if the check fails. |
4128 | */ |
4129 | const_reference |
4130 | at(size_type __n) const |
4131 | { |
4132 | if (__n >= this->size()) |
4133 | __throw_out_of_range_fmt(__N("basic_string::at: __n " |
4134 | "(which is %zu) >= this->size() " |
4135 | "(which is %zu)" ), |
4136 | __n, this->size()); |
4137 | return _M_data()[__n]; |
4138 | } |
4139 | |
4140 | /** |
4141 | * @brief Provides access to the data contained in the %string. |
4142 | * @param __n The index of the character to access. |
4143 | * @return Read/write reference to the character. |
4144 | * @throw std::out_of_range If @a n is an invalid index. |
4145 | * |
4146 | * This function provides for safer data access. The parameter is |
4147 | * first checked that it is in the range of the string. The function |
4148 | * throws out_of_range if the check fails. Success results in |
4149 | * unsharing the string. |
4150 | */ |
4151 | reference |
4152 | at(size_type __n) |
4153 | { |
4154 | if (__n >= size()) |
4155 | __throw_out_of_range_fmt(__N("basic_string::at: __n " |
4156 | "(which is %zu) >= this->size() " |
4157 | "(which is %zu)" ), |
4158 | __n, this->size()); |
4159 | _M_leak(); |
4160 | return _M_data()[__n]; |
4161 | } |
4162 | |
4163 | #if __cplusplus >= 201103L |
4164 | /** |
4165 | * Returns a read/write reference to the data at the first |
4166 | * element of the %string. |
4167 | */ |
4168 | reference |
4169 | front() |
4170 | { |
4171 | __glibcxx_assert(!empty()); |
4172 | return operator[](0); |
4173 | } |
4174 | |
4175 | /** |
4176 | * Returns a read-only (constant) reference to the data at the first |
4177 | * element of the %string. |
4178 | */ |
4179 | const_reference |
4180 | front() const noexcept |
4181 | { |
4182 | __glibcxx_assert(!empty()); |
4183 | return operator[](0); |
4184 | } |
4185 | |
4186 | /** |
4187 | * Returns a read/write reference to the data at the last |
4188 | * element of the %string. |
4189 | */ |
4190 | reference |
4191 | back() |
4192 | { |
4193 | __glibcxx_assert(!empty()); |
4194 | return operator[](this->size() - 1); |
4195 | } |
4196 | |
4197 | /** |
4198 | * Returns a read-only (constant) reference to the data at the |
4199 | * last element of the %string. |
4200 | */ |
4201 | const_reference |
4202 | back() const noexcept |
4203 | { |
4204 | __glibcxx_assert(!empty()); |
4205 | return operator[](this->size() - 1); |
4206 | } |
4207 | #endif |
4208 | |
4209 | // Modifiers: |
4210 | /** |
4211 | * @brief Append a string to this string. |
4212 | * @param __str The string to append. |
4213 | * @return Reference to this string. |
4214 | */ |
4215 | basic_string& |
4216 | operator+=(const basic_string& __str) |
4217 | { return this->append(__str); } |
4218 | |
4219 | /** |
4220 | * @brief Append a C string. |
4221 | * @param __s The C string to append. |
4222 | * @return Reference to this string. |
4223 | */ |
4224 | basic_string& |
4225 | operator+=(const _CharT* __s) |
4226 | { return this->append(__s); } |
4227 | |
4228 | /** |
4229 | * @brief Append a character. |
4230 | * @param __c The character to append. |
4231 | * @return Reference to this string. |
4232 | */ |
4233 | basic_string& |
4234 | operator+=(_CharT __c) |
4235 | { |
4236 | this->push_back(__c); |
4237 | return *this; |
4238 | } |
4239 | |
4240 | #if __cplusplus >= 201103L |
4241 | /** |
4242 | * @brief Append an initializer_list of characters. |
4243 | * @param __l The initializer_list of characters to be appended. |
4244 | * @return Reference to this string. |
4245 | */ |
4246 | basic_string& |
4247 | operator+=(initializer_list<_CharT> __l) |
4248 | { return this->append(__l.begin(), __l.size()); } |
4249 | #endif // C++11 |
4250 | |
4251 | #if __cplusplus >= 201703L |
4252 | /** |
4253 | * @brief Append a string_view. |
4254 | * @param __svt The object convertible to string_view to be appended. |
4255 | * @return Reference to this string. |
4256 | */ |
4257 | template<typename _Tp> |
4258 | _If_sv<_Tp, basic_string&> |
4259 | operator+=(const _Tp& __svt) |
4260 | { return this->append(__svt); } |
4261 | #endif // C++17 |
4262 | |
4263 | /** |
4264 | * @brief Append a string to this string. |
4265 | * @param __str The string to append. |
4266 | * @return Reference to this string. |
4267 | */ |
4268 | basic_string& |
4269 | append(const basic_string& __str); |
4270 | |
4271 | /** |
4272 | * @brief Append a substring. |
4273 | * @param __str The string to append. |
4274 | * @param __pos Index of the first character of str to append. |
4275 | * @param __n The number of characters to append. |
4276 | * @return Reference to this string. |
4277 | * @throw std::out_of_range if @a __pos is not a valid index. |
4278 | * |
4279 | * This function appends @a __n characters from @a __str |
4280 | * starting at @a __pos to this string. If @a __n is is larger |
4281 | * than the number of available characters in @a __str, the |
4282 | * remainder of @a __str is appended. |
4283 | */ |
4284 | basic_string& |
4285 | append(const basic_string& __str, size_type __pos, size_type __n = npos); |
4286 | |
4287 | /** |
4288 | * @brief Append a C substring. |
4289 | * @param __s The C string to append. |
4290 | * @param __n The number of characters to append. |
4291 | * @return Reference to this string. |
4292 | */ |
4293 | basic_string& |
4294 | append(const _CharT* __s, size_type __n); |
4295 | |
4296 | /** |
4297 | * @brief Append a C string. |
4298 | * @param __s The C string to append. |
4299 | * @return Reference to this string. |
4300 | */ |
4301 | basic_string& |
4302 | append(const _CharT* __s) |
4303 | { |
4304 | __glibcxx_requires_string(__s); |
4305 | return this->append(__s, traits_type::length(__s)); |
4306 | } |
4307 | |
4308 | /** |
4309 | * @brief Append multiple characters. |
4310 | * @param __n The number of characters to append. |
4311 | * @param __c The character to use. |
4312 | * @return Reference to this string. |
4313 | * |
4314 | * Appends __n copies of __c to this string. |
4315 | */ |
4316 | basic_string& |
4317 | append(size_type __n, _CharT __c); |
4318 | |
4319 | #if __cplusplus >= 201103L |
4320 | /** |
4321 | * @brief Append an initializer_list of characters. |
4322 | * @param __l The initializer_list of characters to append. |
4323 | * @return Reference to this string. |
4324 | */ |
4325 | basic_string& |
4326 | append(initializer_list<_CharT> __l) |
4327 | { return this->append(__l.begin(), __l.size()); } |
4328 | #endif // C++11 |
4329 | |
4330 | /** |
4331 | * @brief Append a range of characters. |
4332 | * @param __first Iterator referencing the first character to append. |
4333 | * @param __last Iterator marking the end of the range. |
4334 | * @return Reference to this string. |
4335 | * |
4336 | * Appends characters in the range [__first,__last) to this string. |
4337 | */ |
4338 | template<class _InputIterator> |
4339 | basic_string& |
4340 | append(_InputIterator __first, _InputIterator __last) |
4341 | { return this->replace(_M_iend(), _M_iend(), __first, __last); } |
4342 | |
4343 | #if __cplusplus >= 201703L |
4344 | /** |
4345 | * @brief Append a string_view. |
4346 | * @param __svt The object convertible to string_view to be appended. |
4347 | * @return Reference to this string. |
4348 | */ |
4349 | template<typename _Tp> |
4350 | _If_sv<_Tp, basic_string&> |
4351 | append(const _Tp& __svt) |
4352 | { |
4353 | __sv_type __sv = __svt; |
4354 | return this->append(__sv.data(), __sv.size()); |
4355 | } |
4356 | |
4357 | /** |
4358 | * @brief Append a range of characters from a string_view. |
4359 | * @param __svt The object convertible to string_view to be appended |
4360 | * from. |
4361 | * @param __pos The position in the string_view to append from. |
4362 | * @param __n The number of characters to append from the string_view. |
4363 | * @return Reference to this string. |
4364 | */ |
4365 | template<typename _Tp> |
4366 | _If_sv<_Tp, basic_string&> |
4367 | append(const _Tp& __svt, size_type __pos, size_type __n = npos) |
4368 | { |
4369 | __sv_type __sv = __svt; |
4370 | return append(__sv.data() |
4371 | + std::__sv_check(__sv.size(), __pos, "basic_string::append" ), |
4372 | std::__sv_limit(__sv.size(), __pos, __n)); |
4373 | } |
4374 | #endif // C++17 |
4375 | |
4376 | /** |
4377 | * @brief Append a single character. |
4378 | * @param __c Character to append. |
4379 | */ |
4380 | void |
4381 | push_back(_CharT __c) |
4382 | { |
4383 | const size_type __len = 1 + this->size(); |
4384 | if (__len > this->capacity() || _M_rep()->_M_is_shared()) |
4385 | this->reserve(__len); |
4386 | traits_type::assign(_M_data()[this->size()], __c); |
4387 | _M_rep()->_M_set_length_and_sharable(__len); |
4388 | } |
4389 | |
4390 | /** |
4391 | * @brief Set value to contents of another string. |
4392 | * @param __str Source string to use. |
4393 | * @return Reference to this string. |
4394 | */ |
4395 | basic_string& |
4396 | assign(const basic_string& __str); |
4397 | |
4398 | #if __cplusplus >= 201103L |
4399 | /** |
4400 | * @brief Set value to contents of another string. |
4401 | * @param __str Source string to use. |
4402 | * @return Reference to this string. |
4403 | * |
4404 | * This function sets this string to the exact contents of @a __str. |
4405 | * @a __str is a valid, but unspecified string. |
4406 | */ |
4407 | basic_string& |
4408 | assign(basic_string&& __str) |
4409 | noexcept(allocator_traits<_Alloc>::is_always_equal::value) |
4410 | { |
4411 | this->swap(__str); |
4412 | return *this; |
4413 | } |
4414 | #endif // C++11 |
4415 | |
4416 | /** |
4417 | * @brief Set value to a substring of a string. |
4418 | * @param __str The string to use. |
4419 | * @param __pos Index of the first character of str. |
4420 | * @param __n Number of characters to use. |
4421 | * @return Reference to this string. |
4422 | * @throw std::out_of_range if @a pos is not a valid index. |
4423 | * |
4424 | * This function sets this string to the substring of @a __str |
4425 | * consisting of @a __n characters at @a __pos. If @a __n is |
4426 | * is larger than the number of available characters in @a |
4427 | * __str, the remainder of @a __str is used. |
4428 | */ |
4429 | basic_string& |
4430 | assign(const basic_string& __str, size_type __pos, size_type __n = npos) |
4431 | { return this->assign(__str._M_data() |
4432 | + __str._M_check(__pos, "basic_string::assign" ), |
4433 | __str._M_limit(__pos, __n)); } |
4434 | |
4435 | /** |
4436 | * @brief Set value to a C substring. |
4437 | * @param __s The C string to use. |
4438 | * @param __n Number of characters to use. |
4439 | * @return Reference to this string. |
4440 | * |
4441 | * This function sets the value of this string to the first @a __n |
4442 | * characters of @a __s. If @a __n is is larger than the number of |
4443 | * available characters in @a __s, the remainder of @a __s is used. |
4444 | */ |
4445 | basic_string& |
4446 | assign(const _CharT* __s, size_type __n); |
4447 | |
4448 | /** |
4449 | * @brief Set value to contents of a C string. |
4450 | * @param __s The C string to use. |
4451 | * @return Reference to this string. |
4452 | * |
4453 | * This function sets the value of this string to the value of @a __s. |
4454 | * The data is copied, so there is no dependence on @a __s once the |
4455 | * function returns. |
4456 | */ |
4457 | basic_string& |
4458 | assign(const _CharT* __s) |
4459 | { |
4460 | __glibcxx_requires_string(__s); |
4461 | return this->assign(__s, traits_type::length(__s)); |
4462 | } |
4463 | |
4464 | /** |
4465 | * @brief Set value to multiple characters. |
4466 | * @param __n Length of the resulting string. |
4467 | * @param __c The character to use. |
4468 | * @return Reference to this string. |
4469 | * |
4470 | * This function sets the value of this string to @a __n copies of |
4471 | * character @a __c. |
4472 | */ |
4473 | basic_string& |
4474 | assign(size_type __n, _CharT __c) |
4475 | { return _M_replace_aux(size_type(0), this->size(), __n, __c); } |
4476 | |
4477 | /** |
4478 | * @brief Set value to a range of characters. |
4479 | * @param __first Iterator referencing the first character to append. |
4480 | * @param __last Iterator marking the end of the range. |
4481 | * @return Reference to this string. |
4482 | * |
4483 | * Sets value of string to characters in the range [__first,__last). |
4484 | */ |
4485 | template<class _InputIterator> |
4486 | basic_string& |
4487 | assign(_InputIterator __first, _InputIterator __last) |
4488 | { return this->replace(_M_ibegin(), _M_iend(), __first, __last); } |
4489 | |
4490 | #if __cplusplus >= 201103L |
4491 | /** |
4492 | * @brief Set value to an initializer_list of characters. |
4493 | * @param __l The initializer_list of characters to assign. |
4494 | * @return Reference to this string. |
4495 | */ |
4496 | basic_string& |
4497 | assign(initializer_list<_CharT> __l) |
4498 | { return this->assign(__l.begin(), __l.size()); } |
4499 | #endif // C++11 |
4500 | |
4501 | #if __cplusplus >= 201703L |
4502 | /** |
4503 | * @brief Set value from a string_view. |
4504 | * @param __svt The source object convertible to string_view. |
4505 | * @return Reference to this string. |
4506 | */ |
4507 | template<typename _Tp> |
4508 | _If_sv<_Tp, basic_string&> |
4509 | assign(const _Tp& __svt) |
4510 | { |
4511 | __sv_type __sv = __svt; |
4512 | return this->assign(__sv.data(), __sv.size()); |
4513 | } |
4514 | |
4515 | /** |
4516 | * @brief Set value from a range of characters in a string_view. |
4517 | * @param __svt The source object convertible to string_view. |
4518 | * @param __pos The position in the string_view to assign from. |
4519 | * @param __n The number of characters to assign. |
4520 | * @return Reference to this string. |
4521 | */ |
4522 | template<typename _Tp> |
4523 | _If_sv<_Tp, basic_string&> |
4524 | assign(const _Tp& __svt, size_type __pos, size_type __n = npos) |
4525 | { |
4526 | __sv_type __sv = __svt; |
4527 | return assign(__sv.data() |
4528 | + std::__sv_check(__sv.size(), __pos, "basic_string::assign" ), |
4529 | std::__sv_limit(__sv.size(), __pos, __n)); |
4530 | } |
4531 | #endif // C++17 |
4532 | |
4533 | /** |
4534 | * @brief Insert multiple characters. |
4535 | * @param __p Iterator referencing location in string to insert at. |
4536 | * @param __n Number of characters to insert |
4537 | * @param __c The character to insert. |
4538 | * @throw std::length_error If new length exceeds @c max_size(). |
4539 | * |
4540 | * Inserts @a __n copies of character @a __c starting at the |
4541 | * position referenced by iterator @a __p. If adding |
4542 | * characters causes the length to exceed max_size(), |
4543 | * length_error is thrown. The value of the string doesn't |
4544 | * change if an error is thrown. |
4545 | */ |
4546 | void |
4547 | insert(iterator __p, size_type __n, _CharT __c) |
4548 | { this->replace(__p, __p, __n, __c); } |
4549 | |
4550 | /** |
4551 | * @brief Insert a range of characters. |
4552 | * @param __p Iterator referencing location in string to insert at. |
4553 | * @param __beg Start of range. |
4554 | * @param __end End of range. |
4555 | * @throw std::length_error If new length exceeds @c max_size(). |
4556 | * |
4557 | * Inserts characters in range [__beg,__end). If adding |
4558 | * characters causes the length to exceed max_size(), |
4559 | * length_error is thrown. The value of the string doesn't |
4560 | * change if an error is thrown. |
4561 | */ |
4562 | template<class _InputIterator> |
4563 | void |
4564 | insert(iterator __p, _InputIterator __beg, _InputIterator __end) |
4565 | { this->replace(__p, __p, __beg, __end); } |
4566 | |
4567 | #if __cplusplus >= 201103L |
4568 | /** |
4569 | * @brief Insert an initializer_list of characters. |
4570 | * @param __p Iterator referencing location in string to insert at. |
4571 | * @param __l The initializer_list of characters to insert. |
4572 | * @throw std::length_error If new length exceeds @c max_size(). |
4573 | */ |
4574 | void |
4575 | insert(iterator __p, initializer_list<_CharT> __l) |
4576 | { |
4577 | _GLIBCXX_DEBUG_PEDASSERT(__p >= _M_ibegin() && __p <= _M_iend()); |
4578 | this->insert(__p - _M_ibegin(), __l.begin(), __l.size()); |
4579 | } |
4580 | #endif // C++11 |
4581 | |
4582 | /** |
4583 | * @brief Insert value of a string. |
4584 | * @param __pos1 Position in string to insert at. |
4585 | * @param __str The string to insert. |
4586 | * @return Reference to this string. |
4587 | * @throw std::length_error If new length exceeds @c max_size(). |
4588 | * |
4589 | * Inserts value of @a __str starting at @a __pos1. If adding |
4590 | * characters causes the length to exceed max_size(), |
4591 | * length_error is thrown. The value of the string doesn't |
4592 | * change if an error is thrown. |
4593 | */ |
4594 | basic_string& |
4595 | insert(size_type __pos1, const basic_string& __str) |
4596 | { return this->insert(__pos1, __str, size_type(0), __str.size()); } |
4597 | |
4598 | /** |
4599 | * @brief Insert a substring. |
4600 | * @param __pos1 Position in string to insert at. |
4601 | * @param __str The string to insert. |
4602 | * @param __pos2 Start of characters in str to insert. |
4603 | * @param __n Number of characters to insert. |
4604 | * @return Reference to this string. |
4605 | * @throw std::length_error If new length exceeds @c max_size(). |
4606 | * @throw std::out_of_range If @a pos1 > size() or |
4607 | * @a __pos2 > @a str.size(). |
4608 | * |
4609 | * Starting at @a pos1, insert @a __n character of @a __str |
4610 | * beginning with @a __pos2. If adding characters causes the |
4611 | * length to exceed max_size(), length_error is thrown. If @a |
4612 | * __pos1 is beyond the end of this string or @a __pos2 is |
4613 | * beyond the end of @a __str, out_of_range is thrown. The |
4614 | * value of the string doesn't change if an error is thrown. |
4615 | */ |
4616 | basic_string& |
4617 | insert(size_type __pos1, const basic_string& __str, |
4618 | size_type __pos2, size_type __n = npos) |
4619 | { return this->insert(__pos1, __str._M_data() |
4620 | + __str._M_check(__pos2, "basic_string::insert" ), |
4621 | __str._M_limit(__pos2, __n)); } |
4622 | |
4623 | /** |
4624 | * @brief Insert a C substring. |
4625 | * @param __pos Position in string to insert at. |
4626 | * @param __s The C string to insert. |
4627 | * @param __n The number of characters to insert. |
4628 | * @return Reference to this string. |
4629 | * @throw std::length_error If new length exceeds @c max_size(). |
4630 | * @throw std::out_of_range If @a __pos is beyond the end of this |
4631 | * string. |
4632 | * |
4633 | * Inserts the first @a __n characters of @a __s starting at @a |
4634 | * __pos. If adding characters causes the length to exceed |
4635 | * max_size(), length_error is thrown. If @a __pos is beyond |
4636 | * end(), out_of_range is thrown. The value of the string |
4637 | * doesn't change if an error is thrown. |
4638 | */ |
4639 | basic_string& |
4640 | insert(size_type __pos, const _CharT* __s, size_type __n); |
4641 | |
4642 | /** |
4643 | * @brief Insert a C string. |
4644 | * @param __pos Position in string to insert at. |
4645 | * @param __s The C string to insert. |
4646 | * @return Reference to this string. |
4647 | * @throw std::length_error If new length exceeds @c max_size(). |
4648 | * @throw std::out_of_range If @a pos is beyond the end of this |
4649 | * string. |
4650 | * |
4651 | * Inserts the first @a n characters of @a __s starting at @a __pos. If |
4652 | * adding characters causes the length to exceed max_size(), |
4653 | * length_error is thrown. If @a __pos is beyond end(), out_of_range is |
4654 | * thrown. The value of the string doesn't change if an error is |
4655 | * thrown. |
4656 | */ |
4657 | basic_string& |
4658 | insert(size_type __pos, const _CharT* __s) |
4659 | { |
4660 | __glibcxx_requires_string(__s); |
4661 | return this->insert(__pos, __s, traits_type::length(__s)); |
4662 | } |
4663 | |
4664 | /** |
4665 | * @brief Insert multiple characters. |
4666 | * @param __pos Index in string to insert at. |
4667 | * @param __n Number of characters to insert |
4668 | * @param __c The character to insert. |
4669 | * @return Reference to this string. |
4670 | * @throw std::length_error If new length exceeds @c max_size(). |
4671 | * @throw std::out_of_range If @a __pos is beyond the end of this |
4672 | * string. |
4673 | * |
4674 | * Inserts @a __n copies of character @a __c starting at index |
4675 | * @a __pos. If adding characters causes the length to exceed |
4676 | * max_size(), length_error is thrown. If @a __pos > length(), |
4677 | * out_of_range is thrown. The value of the string doesn't |
4678 | * change if an error is thrown. |
4679 | */ |
4680 | basic_string& |
4681 | insert(size_type __pos, size_type __n, _CharT __c) |
4682 | { return _M_replace_aux(_M_check(__pos, "basic_string::insert" ), |
4683 | size_type(0), __n, __c); } |
4684 | |
4685 | /** |
4686 | * @brief Insert one character. |
4687 | * @param __p Iterator referencing position in string to insert at. |
4688 | * @param __c The character to insert. |
4689 | * @return Iterator referencing newly inserted char. |
4690 | * @throw std::length_error If new length exceeds @c max_size(). |
4691 | * |
4692 | * Inserts character @a __c at position referenced by @a __p. |
4693 | * If adding character causes the length to exceed max_size(), |
4694 | * length_error is thrown. If @a __p is beyond end of string, |
4695 | * out_of_range is thrown. The value of the string doesn't |
4696 | * change if an error is thrown. |
4697 | */ |
4698 | iterator |
4699 | insert(iterator __p, _CharT __c) |
4700 | { |
4701 | _GLIBCXX_DEBUG_PEDASSERT(__p >= _M_ibegin() && __p <= _M_iend()); |
4702 | const size_type __pos = __p - _M_ibegin(); |
4703 | _M_replace_aux(__pos, size_type(0), size_type(1), __c); |
4704 | _M_rep()->_M_set_leaked(); |
4705 | return iterator(_M_data() + __pos); |
4706 | } |
4707 | |
4708 | #if __cplusplus >= 201703L |
4709 | /** |
4710 | * @brief Insert a string_view. |
4711 | * @param __pos Position in string to insert at. |
4712 | * @param __svt The object convertible to string_view to insert. |
4713 | * @return Reference to this string. |
4714 | */ |
4715 | template<typename _Tp> |
4716 | _If_sv<_Tp, basic_string&> |
4717 | insert(size_type __pos, const _Tp& __svt) |
4718 | { |
4719 | __sv_type __sv = __svt; |
4720 | return this->insert(__pos, __sv.data(), __sv.size()); |
4721 | } |
4722 | |
4723 | /** |
4724 | * @brief Insert a string_view. |
4725 | * @param __pos1 Position in string to insert at. |
4726 | * @param __svt The object convertible to string_view to insert from. |
4727 | * @param __pos2 Position in string_view to insert from. |
4728 | * @param __n The number of characters to insert. |
4729 | * @return Reference to this string. |
4730 | */ |
4731 | template<typename _Tp> |
4732 | _If_sv<_Tp, basic_string&> |
4733 | insert(size_type __pos1, const _Tp& __svt, |
4734 | size_type __pos2, size_type __n = npos) |
4735 | { |
4736 | __sv_type __sv = __svt; |
4737 | return this->replace(__pos1, size_type(0), __sv.data() |
4738 | + std::__sv_check(__sv.size(), __pos2, "basic_string::insert" ), |
4739 | std::__sv_limit(__sv.size(), __pos2, __n)); |
4740 | } |
4741 | #endif // C++17 |
4742 | |
4743 | /** |
4744 | * @brief Remove characters. |
4745 | * @param __pos Index of first character to remove (default 0). |
4746 | * @param __n Number of characters to remove (default remainder). |
4747 | * @return Reference to this string. |
4748 | * @throw std::out_of_range If @a pos is beyond the end of this |
4749 | * string. |
4750 | * |
4751 | * Removes @a __n characters from this string starting at @a |
4752 | * __pos. The length of the string is reduced by @a __n. If |
4753 | * there are < @a __n characters to remove, the remainder of |
4754 | * the string is truncated. If @a __p is beyond end of string, |
4755 | * out_of_range is thrown. The value of the string doesn't |
4756 | * change if an error is thrown. |
4757 | */ |
4758 | basic_string& |
4759 | erase(size_type __pos = 0, size_type __n = npos) |
4760 | { |
4761 | _M_mutate(_M_check(__pos, "basic_string::erase" ), |
4762 | _M_limit(__pos, __n), size_type(0)); |
4763 | return *this; |
4764 | } |
4765 | |
4766 | /** |
4767 | * @brief Remove one character. |
4768 | * @param __position Iterator referencing the character to remove. |
4769 | * @return iterator referencing same location after removal. |
4770 | * |
4771 | * Removes the character at @a __position from this string. The value |
4772 | * of the string doesn't change if an error is thrown. |
4773 | */ |
4774 | iterator |
4775 | erase(iterator __position) |
4776 | { |
4777 | _GLIBCXX_DEBUG_PEDASSERT(__position >= _M_ibegin() |
4778 | && __position < _M_iend()); |
4779 | const size_type __pos = __position - _M_ibegin(); |
4780 | _M_mutate(__pos, size_type(1), size_type(0)); |
4781 | _M_rep()->_M_set_leaked(); |
4782 | return iterator(_M_data() + __pos); |
4783 | } |
4784 | |
4785 | /** |
4786 | * @brief Remove a range of characters. |
4787 | * @param __first Iterator referencing the first character to remove. |
4788 | * @param __last Iterator referencing the end of the range. |
4789 | * @return Iterator referencing location of first after removal. |
4790 | * |
4791 | * Removes the characters in the range [first,last) from this string. |
4792 | * The value of the string doesn't change if an error is thrown. |
4793 | */ |
4794 | iterator |
4795 | erase(iterator __first, iterator __last); |
4796 | |
4797 | #if __cplusplus >= 201103L |
4798 | /** |
4799 | * @brief Remove the last character. |
4800 | * |
4801 | * The string must be non-empty. |
4802 | */ |
4803 | void |
4804 | pop_back() // FIXME C++11: should be noexcept. |
4805 | { |
4806 | __glibcxx_assert(!empty()); |
4807 | erase(size() - 1, 1); |
4808 | } |
4809 | #endif // C++11 |
4810 | |
4811 | /** |
4812 | * @brief Replace characters with value from another string. |
4813 | * @param __pos Index of first character to replace. |
4814 | * @param __n Number of characters to be replaced. |
4815 | * @param __str String to insert. |
4816 | * @return Reference to this string. |
4817 | * @throw std::out_of_range If @a pos is beyond the end of this |
4818 | * string. |
4819 | * @throw std::length_error If new length exceeds @c max_size(). |
4820 | * |
4821 | * Removes the characters in the range [__pos,__pos+__n) from |
4822 | * this string. In place, the value of @a __str is inserted. |
4823 | * If @a __pos is beyond end of string, out_of_range is thrown. |
4824 | * If the length of the result exceeds max_size(), length_error |
4825 | * is thrown. The value of the string doesn't change if an |
4826 | * error is thrown. |
4827 | */ |
4828 | basic_string& |
4829 | replace(size_type __pos, size_type __n, const basic_string& __str) |
4830 | { return this->replace(__pos, __n, __str._M_data(), __str.size()); } |
4831 | |
4832 | /** |
4833 | * @brief Replace characters with value from another string. |
4834 | * @param __pos1 Index of first character to replace. |
4835 | * @param __n1 Number of characters to be replaced. |
4836 | * @param __str String to insert. |
4837 | * @param __pos2 Index of first character of str to use. |
4838 | * @param __n2 Number of characters from str to use. |
4839 | * @return Reference to this string. |
4840 | * @throw std::out_of_range If @a __pos1 > size() or @a __pos2 > |
4841 | * __str.size(). |
4842 | * @throw std::length_error If new length exceeds @c max_size(). |
4843 | * |
4844 | * Removes the characters in the range [__pos1,__pos1 + n) from this |
4845 | * string. In place, the value of @a __str is inserted. If @a __pos is |
4846 | * beyond end of string, out_of_range is thrown. If the length of the |
4847 | * result exceeds max_size(), length_error is thrown. The value of the |
4848 | * string doesn't change if an error is thrown. |
4849 | */ |
4850 | basic_string& |
4851 | replace(size_type __pos1, size_type __n1, const basic_string& __str, |
4852 | size_type __pos2, size_type __n2 = npos) |
4853 | { return this->replace(__pos1, __n1, __str._M_data() |
4854 | + __str._M_check(__pos2, "basic_string::replace" ), |
4855 | __str._M_limit(__pos2, __n2)); } |
4856 | |
4857 | /** |
4858 | * @brief Replace characters with value of a C substring. |
4859 | * @param __pos Index of first character to replace. |
4860 | * @param __n1 Number of characters to be replaced. |
4861 | * @param __s C string to insert. |
4862 | * @param __n2 Number of characters from @a s to use. |
4863 | * @return Reference to this string. |
4864 | * @throw std::out_of_range If @a pos1 > size(). |
4865 | * @throw std::length_error If new length exceeds @c max_size(). |
4866 | * |
4867 | * Removes the characters in the range [__pos,__pos + __n1) |
4868 | * from this string. In place, the first @a __n2 characters of |
4869 | * @a __s are inserted, or all of @a __s if @a __n2 is too large. If |
4870 | * @a __pos is beyond end of string, out_of_range is thrown. If |
4871 | * the length of result exceeds max_size(), length_error is |
4872 | * thrown. The value of the string doesn't change if an error |
4873 | * is thrown. |
4874 | */ |
4875 | basic_string& |
4876 | replace(size_type __pos, size_type __n1, const _CharT* __s, |
4877 | size_type __n2); |
4878 | |
4879 | /** |
4880 | * @brief Replace characters with value of a C string. |
4881 | * @param __pos Index of first character to replace. |
4882 | * @param __n1 Number of characters to be replaced. |
4883 | * @param __s C string to insert. |
4884 | * @return Reference to this string. |
4885 | * @throw std::out_of_range If @a pos > size(). |
4886 | * @throw std::length_error If new length exceeds @c max_size(). |
4887 | * |
4888 | * Removes the characters in the range [__pos,__pos + __n1) |
4889 | * from this string. In place, the characters of @a __s are |
4890 | * inserted. If @a __pos is beyond end of string, out_of_range |
4891 | * is thrown. If the length of result exceeds max_size(), |
4892 | * length_error is thrown. The value of the string doesn't |
4893 | * change if an error is thrown. |
4894 | */ |
4895 | basic_string& |
4896 | replace(size_type __pos, size_type __n1, const _CharT* __s) |
4897 | { |
4898 | __glibcxx_requires_string(__s); |
4899 | return this->replace(__pos, __n1, __s, traits_type::length(__s)); |
4900 | } |
4901 | |
4902 | /** |
4903 | * @brief Replace characters with multiple characters. |
4904 | * @param __pos Index of first character to replace. |
4905 | * @param __n1 Number of characters to be replaced. |
4906 | * @param __n2 Number of characters to insert. |
4907 | * @param __c Character to insert. |
4908 | * @return Reference to this string. |
4909 | * @throw std::out_of_range If @a __pos > size(). |
4910 | * @throw std::length_error If new length exceeds @c max_size(). |
4911 | * |
4912 | * Removes the characters in the range [pos,pos + n1) from this |
4913 | * string. In place, @a __n2 copies of @a __c are inserted. |
4914 | * If @a __pos is beyond end of string, out_of_range is thrown. |
4915 | * If the length of result exceeds max_size(), length_error is |
4916 | * thrown. The value of the string doesn't change if an error |
4917 | * is thrown. |
4918 | */ |
4919 | basic_string& |
4920 | replace(size_type __pos, size_type __n1, size_type __n2, _CharT __c) |
4921 | { return _M_replace_aux(_M_check(__pos, "basic_string::replace" ), |
4922 | _M_limit(__pos, __n1), __n2, __c); } |
4923 | |
4924 | /** |
4925 | * @brief Replace range of characters with string. |
4926 | * @param __i1 Iterator referencing start of range to replace. |
4927 | * @param __i2 Iterator referencing end of range to replace. |
4928 | * @param __str String value to insert. |
4929 | * @return Reference to this string. |
4930 | * @throw std::length_error If new length exceeds @c max_size(). |
4931 | * |
4932 | * Removes the characters in the range [__i1,__i2). In place, |
4933 | * the value of @a __str is inserted. If the length of result |
4934 | * exceeds max_size(), length_error is thrown. The value of |
4935 | * the string doesn't change if an error is thrown. |
4936 | */ |
4937 | basic_string& |
4938 | replace(iterator __i1, iterator __i2, const basic_string& __str) |
4939 | { return this->replace(__i1, __i2, __str._M_data(), __str.size()); } |
4940 | |
4941 | /** |
4942 | * @brief Replace range of characters with C substring. |
4943 | * @param __i1 Iterator referencing start of range to replace. |
4944 | * @param __i2 Iterator referencing end of range to replace. |
4945 | * @param __s C string value to insert. |
4946 | * @param __n Number of characters from s to insert. |
4947 | * @return Reference to this string. |
4948 | * @throw std::length_error If new length exceeds @c max_size(). |
4949 | * |
4950 | * Removes the characters in the range [__i1,__i2). In place, |
4951 | * the first @a __n characters of @a __s are inserted. If the |
4952 | * length of result exceeds max_size(), length_error is thrown. |
4953 | * The value of the string doesn't change if an error is |
4954 | * thrown. |
4955 | */ |
4956 | basic_string& |
4957 | replace(iterator __i1, iterator __i2, const _CharT* __s, size_type __n) |
4958 | { |
4959 | _GLIBCXX_DEBUG_PEDASSERT(_M_ibegin() <= __i1 && __i1 <= __i2 |
4960 | && __i2 <= _M_iend()); |
4961 | return this->replace(__i1 - _M_ibegin(), __i2 - __i1, __s, __n); |
4962 | } |
4963 | |
4964 | /** |
4965 | * @brief Replace range of characters with C string. |
4966 | * @param __i1 Iterator referencing start of range to replace. |
4967 | * @param __i2 Iterator referencing end of range to replace. |
4968 | * @param __s C string value to insert. |
4969 | * @return Reference to this string. |
4970 | * @throw std::length_error If new length exceeds @c max_size(). |
4971 | * |
4972 | * Removes the characters in the range [__i1,__i2). In place, |
4973 | * the characters of @a __s are inserted. If the length of |
4974 | * result exceeds max_size(), length_error is thrown. The |
4975 | * value of the string doesn't change if an error is thrown. |
4976 | */ |
4977 | basic_string& |
4978 | replace(iterator __i1, iterator __i2, const _CharT* __s) |
4979 | { |
4980 | __glibcxx_requires_string(__s); |
4981 | return this->replace(__i1, __i2, __s, traits_type::length(__s)); |
4982 | } |
4983 | |
4984 | /** |
4985 | * @brief Replace range of characters with multiple characters |
4986 | * @param __i1 Iterator referencing start of range to replace. |
4987 | * @param __i2 Iterator referencing end of range to replace. |
4988 | * @param __n Number of characters to insert. |
4989 | * @param __c Character to insert. |
4990 | * @return Reference to this string. |
4991 | * @throw std::length_error If new length exceeds @c max_size(). |
4992 | * |
4993 | * Removes the characters in the range [__i1,__i2). In place, |
4994 | * @a __n copies of @a __c are inserted. If the length of |
4995 | * result exceeds max_size(), length_error is thrown. The |
4996 | * value of the string doesn't change if an error is thrown. |
4997 | */ |
4998 | basic_string& |
4999 | replace(iterator __i1, iterator __i2, size_type __n, _CharT __c) |
5000 | { |
5001 | _GLIBCXX_DEBUG_PEDASSERT(_M_ibegin() <= __i1 && __i1 <= __i2 |
5002 | && __i2 <= _M_iend()); |
5003 | return _M_replace_aux(__i1 - _M_ibegin(), __i2 - __i1, __n, __c); |
5004 | } |
5005 | |
5006 | /** |
5007 | * @brief Replace range of characters with range. |
5008 | * @param __i1 Iterator referencing start of range to replace. |
5009 | * @param __i2 Iterator referencing end of range to replace. |
5010 | * @param __k1 Iterator referencing start of range to insert. |
5011 | * @param __k2 Iterator referencing end of range to insert. |
5012 | * @return Reference to this string. |
5013 | * @throw std::length_error If new length exceeds @c max_size(). |
5014 | * |
5015 | * Removes the characters in the range [__i1,__i2). In place, |
5016 | * characters in the range [__k1,__k2) are inserted. If the |
5017 | * length of result exceeds max_size(), length_error is thrown. |
5018 | * The value of the string doesn't change if an error is |
5019 | * thrown. |
5020 | */ |
5021 | template<class _InputIterator> |
5022 | basic_string& |
5023 | replace(iterator __i1, iterator __i2, |
5024 | _InputIterator __k1, _InputIterator __k2) |
5025 | { |
5026 | _GLIBCXX_DEBUG_PEDASSERT(_M_ibegin() <= __i1 && __i1 <= __i2 |
5027 | && __i2 <= _M_iend()); |
5028 | __glibcxx_requires_valid_range(__k1, __k2); |
5029 | typedef typename std::__is_integer<_InputIterator>::__type _Integral; |
5030 | return _M_replace_dispatch(__i1, __i2, __k1, __k2, _Integral()); |
5031 | } |
5032 | |
5033 | // Specializations for the common case of pointer and iterator: |
5034 | // useful to avoid the overhead of temporary buffering in _M_replace. |
5035 | basic_string& |
5036 | replace(iterator __i1, iterator __i2, _CharT* __k1, _CharT* __k2) |
5037 | { |
5038 | _GLIBCXX_DEBUG_PEDASSERT(_M_ibegin() <= __i1 && __i1 <= __i2 |
5039 | && __i2 <= _M_iend()); |
5040 | __glibcxx_requires_valid_range(__k1, __k2); |
5041 | return this->replace(__i1 - _M_ibegin(), __i2 - __i1, |
5042 | __k1, __k2 - __k1); |
5043 | } |
5044 | |
5045 | basic_string& |
5046 | replace(iterator __i1, iterator __i2, |
5047 | const _CharT* __k1, const _CharT* __k2) |
5048 | { |
5049 | _GLIBCXX_DEBUG_PEDASSERT(_M_ibegin() <= __i1 && __i1 <= __i2 |
5050 | && __i2 <= _M_iend()); |
5051 | __glibcxx_requires_valid_range(__k1, __k2); |
5052 | return this->replace(__i1 - _M_ibegin(), __i2 - __i1, |
5053 | __k1, __k2 - __k1); |
5054 | } |
5055 | |
5056 | basic_string& |
5057 | replace(iterator __i1, iterator __i2, iterator __k1, iterator __k2) |
5058 | { |
5059 | _GLIBCXX_DEBUG_PEDASSERT(_M_ibegin() <= __i1 && __i1 <= __i2 |
5060 | && __i2 <= _M_iend()); |
5061 | __glibcxx_requires_valid_range(__k1, __k2); |
5062 | return this->replace(__i1 - _M_ibegin(), __i2 - __i1, |
5063 | __k1.base(), __k2 - __k1); |
5064 | } |
5065 | |
5066 | basic_string& |
5067 | replace(iterator __i1, iterator __i2, |
5068 | const_iterator __k1, const_iterator __k2) |
5069 | { |
5070 | _GLIBCXX_DEBUG_PEDASSERT(_M_ibegin() <= __i1 && __i1 <= __i2 |
5071 | && __i2 <= _M_iend()); |
5072 | __glibcxx_requires_valid_range(__k1, __k2); |
5073 | return this->replace(__i1 - _M_ibegin(), __i2 - __i1, |
5074 | __k1.base(), __k2 - __k1); |
5075 | } |
5076 | |
5077 | #if __cplusplus >= 201103L |
5078 | /** |
5079 | * @brief Replace range of characters with initializer_list. |
5080 | * @param __i1 Iterator referencing start of range to replace. |
5081 | * @param __i2 Iterator referencing end of range to replace. |
5082 | * @param __l The initializer_list of characters to insert. |
5083 | * @return Reference to this string. |
5084 | * @throw std::length_error If new length exceeds @c max_size(). |
5085 | * |
5086 | * Removes the characters in the range [__i1,__i2). In place, |
5087 | * characters in the range [__k1,__k2) are inserted. If the |
5088 | * length of result exceeds max_size(), length_error is thrown. |
5089 | * The value of the string doesn't change if an error is |
5090 | * thrown. |
5091 | */ |
5092 | basic_string& replace(iterator __i1, iterator __i2, |
5093 | initializer_list<_CharT> __l) |
5094 | { return this->replace(__i1, __i2, __l.begin(), __l.end()); } |
5095 | #endif // C++11 |
5096 | |
5097 | #if __cplusplus >= 201703L |
5098 | /** |
5099 | * @brief Replace range of characters with string_view. |
5100 | * @param __pos The position to replace at. |
5101 | * @param __n The number of characters to replace. |
5102 | * @param __svt The object convertible to string_view to insert. |
5103 | * @return Reference to this string. |
5104 | */ |
5105 | template<typename _Tp> |
5106 | _If_sv<_Tp, basic_string&> |
5107 | replace(size_type __pos, size_type __n, const _Tp& __svt) |
5108 | { |
5109 | __sv_type __sv = __svt; |
5110 | return this->replace(__pos, __n, __sv.data(), __sv.size()); |
5111 | } |
5112 | |
5113 | /** |
5114 | * @brief Replace range of characters with string_view. |
5115 | * @param __pos1 The position to replace at. |
5116 | * @param __n1 The number of characters to replace. |
5117 | * @param __svt The object convertible to string_view to insert from. |
5118 | * @param __pos2 The position in the string_view to insert from. |
5119 | * @param __n2 The number of characters to insert. |
5120 | * @return Reference to this string. |
5121 | */ |
5122 | template<typename _Tp> |
5123 | _If_sv<_Tp, basic_string&> |
5124 | replace(size_type __pos1, size_type __n1, const _Tp& __svt, |
5125 | size_type __pos2, size_type __n2 = npos) |
5126 | { |
5127 | __sv_type __sv = __svt; |
5128 | return this->replace(__pos1, __n1, |
5129 | __sv.data() |
5130 | + std::__sv_check(__sv.size(), __pos2, "basic_string::replace" ), |
5131 | std::__sv_limit(__sv.size(), __pos2, __n2)); |
5132 | } |
5133 | |
5134 | /** |
5135 | * @brief Replace range of characters with string_view. |
5136 | * @param __i1 An iterator referencing the start position |
5137 | to replace at. |
5138 | * @param __i2 An iterator referencing the end position |
5139 | for the replace. |
5140 | * @param __svt The object convertible to string_view to insert from. |
5141 | * @return Reference to this string. |
5142 | */ |
5143 | template<typename _Tp> |
5144 | _If_sv<_Tp, basic_string&> |
5145 | replace(const_iterator __i1, const_iterator __i2, const _Tp& __svt) |
5146 | { |
5147 | __sv_type __sv = __svt; |
5148 | return this->replace(__i1 - begin(), __i2 - __i1, __sv); |
5149 | } |
5150 | #endif // C++17 |
5151 | |
5152 | private: |
5153 | template<class _Integer> |
5154 | basic_string& |
5155 | _M_replace_dispatch(iterator __i1, iterator __i2, _Integer __n, |
5156 | _Integer __val, __true_type) |
5157 | { return _M_replace_aux(__i1 - _M_ibegin(), __i2 - __i1, __n, __val); } |
5158 | |
5159 | template<class _InputIterator> |
5160 | basic_string& |
5161 | _M_replace_dispatch(iterator __i1, iterator __i2, _InputIterator __k1, |
5162 | _InputIterator __k2, __false_type); |
5163 | |
5164 | basic_string& |
5165 | _M_replace_aux(size_type __pos1, size_type __n1, size_type __n2, |
5166 | _CharT __c); |
5167 | |
5168 | basic_string& |
5169 | _M_replace_safe(size_type __pos1, size_type __n1, const _CharT* __s, |
5170 | size_type __n2); |
5171 | |
5172 | // _S_construct_aux is used to implement the 21.3.1 para 15 which |
5173 | // requires special behaviour if _InIter is an integral type |
5174 | template<class _InIterator> |
5175 | static _CharT* |
5176 | _S_construct_aux(_InIterator __beg, _InIterator __end, |
5177 | const _Alloc& __a, __false_type) |
5178 | { |
5179 | typedef typename iterator_traits<_InIterator>::iterator_category _Tag; |
5180 | return _S_construct(__beg, __end, __a, _Tag()); |
5181 | } |
5182 | |
5183 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
5184 | // 438. Ambiguity in the "do the right thing" clause |
5185 | template<class _Integer> |
5186 | static _CharT* |
5187 | _S_construct_aux(_Integer __beg, _Integer __end, |
5188 | const _Alloc& __a, __true_type) |
5189 | { return _S_construct_aux_2(static_cast<size_type>(__beg), |
5190 | __end, __a); } |
5191 | |
5192 | static _CharT* |
5193 | _S_construct_aux_2(size_type __req, _CharT __c, const _Alloc& __a) |
5194 | { return _S_construct(__req, __c, __a); } |
5195 | |
5196 | template<class _InIterator> |
5197 | static _CharT* |
5198 | _S_construct(_InIterator __beg, _InIterator __end, const _Alloc& __a) |
5199 | { |
5200 | typedef typename std::__is_integer<_InIterator>::__type _Integral; |
5201 | return _S_construct_aux(__beg, __end, __a, _Integral()); |
5202 | } |
5203 | |
5204 | // For Input Iterators, used in istreambuf_iterators, etc. |
5205 | template<class _InIterator> |
5206 | static _CharT* |
5207 | _S_construct(_InIterator __beg, _InIterator __end, const _Alloc& __a, |
5208 | input_iterator_tag); |
5209 | |
5210 | // For forward_iterators up to random_access_iterators, used for |
5211 | // string::iterator, _CharT*, etc. |
5212 | template<class _FwdIterator> |
5213 | static _CharT* |
5214 | _S_construct(_FwdIterator __beg, _FwdIterator __end, const _Alloc& __a, |
5215 | forward_iterator_tag); |
5216 | |
5217 | static _CharT* |
5218 | _S_construct(size_type __req, _CharT __c, const _Alloc& __a); |
5219 | |
5220 | public: |
5221 | |
5222 | /** |
5223 | * @brief Copy substring into C string. |
5224 | * @param __s C string to copy value into. |
5225 | * @param __n Number of characters to copy. |
5226 | * @param __pos Index of first character to copy. |
5227 | * @return Number of characters actually copied |
5228 | * @throw std::out_of_range If __pos > size(). |
5229 | * |
5230 | * Copies up to @a __n characters starting at @a __pos into the |
5231 | * C string @a __s. If @a __pos is %greater than size(), |
5232 | * out_of_range is thrown. |
5233 | */ |
5234 | size_type |
5235 | copy(_CharT* __s, size_type __n, size_type __pos = 0) const; |
5236 | |
5237 | /** |
5238 | * @brief Swap contents with another string. |
5239 | * @param __s String to swap with. |
5240 | * |
5241 | * Exchanges the contents of this string with that of @a __s in constant |
5242 | * time. |
5243 | */ |
5244 | void |
5245 | swap(basic_string& __s) |
5246 | _GLIBCXX_NOEXCEPT_IF(allocator_traits<_Alloc>::is_always_equal::value); |
5247 | |
5248 | // String operations: |
5249 | /** |
5250 | * @brief Return const pointer to null-terminated contents. |
5251 | * |
5252 | * This is a handle to internal data. Do not modify or dire things may |
5253 | * happen. |
5254 | */ |
5255 | const _CharT* |
5256 | c_str() const _GLIBCXX_NOEXCEPT |
5257 | { return _M_data(); } |
5258 | |
5259 | /** |
5260 | * @brief Return const pointer to contents. |
5261 | * |
5262 | * This is a pointer to internal data. It is undefined to modify |
5263 | * the contents through the returned pointer. To get a pointer that |
5264 | * allows modifying the contents use @c &str[0] instead, |
5265 | * (or in C++17 the non-const @c str.data() overload). |
5266 | */ |
5267 | const _CharT* |
5268 | data() const _GLIBCXX_NOEXCEPT |
5269 | { return _M_data(); } |
5270 | |
5271 | #if __cplusplus >= 201703L |
5272 | /** |
5273 | * @brief Return non-const pointer to contents. |
5274 | * |
5275 | * This is a pointer to the character sequence held by the string. |
5276 | * Modifying the characters in the sequence is allowed. |
5277 | */ |
5278 | _CharT* |
5279 | data() noexcept |
5280 | { |
5281 | _M_leak(); |
5282 | return _M_data(); |
5283 | } |
5284 | #endif |
5285 | |
5286 | /** |
5287 | * @brief Return copy of allocator used to construct this string. |
5288 | */ |
5289 | allocator_type |
5290 | get_allocator() const _GLIBCXX_NOEXCEPT |
5291 | { return _M_dataplus; } |
5292 | |
5293 | /** |
5294 | * @brief Find position of a C substring. |
5295 | * @param __s C string to locate. |
5296 | * @param __pos Index of character to search from. |
5297 | * @param __n Number of characters from @a s to search for. |
5298 | * @return Index of start of first occurrence. |
5299 | * |
5300 | * Starting from @a __pos, searches forward for the first @a |
5301 | * __n characters in @a __s within this string. If found, |
5302 | * returns the index where it begins. If not found, returns |
5303 | * npos. |
5304 | */ |
5305 | size_type |
5306 | find(const _CharT* __s, size_type __pos, size_type __n) const |
5307 | _GLIBCXX_NOEXCEPT; |
5308 | |
5309 | /** |
5310 | * @brief Find position of a string. |
5311 | * @param __str String to locate. |
5312 | * @param __pos Index of character to search from (default 0). |
5313 | * @return Index of start of first occurrence. |
5314 | * |
5315 | * Starting from @a __pos, searches forward for value of @a __str within |
5316 | * this string. If found, returns the index where it begins. If not |
5317 | * found, returns npos. |
5318 | */ |
5319 | size_type |
5320 | find(const basic_string& __str, size_type __pos = 0) const |
5321 | _GLIBCXX_NOEXCEPT |
5322 | { return this->find(__str.data(), __pos, __str.size()); } |
5323 | |
5324 | /** |
5325 | * @brief Find position of a C string. |
5326 | * @param __s C string to locate. |
5327 | * @param __pos Index of character to search from (default 0). |
5328 | * @return Index of start of first occurrence. |
5329 | * |
5330 | * Starting from @a __pos, searches forward for the value of @a |
5331 | * __s within this string. If found, returns the index where |
5332 | * it begins. If not found, returns npos. |
5333 | */ |
5334 | size_type |
5335 | find(const _CharT* __s, size_type __pos = 0) const _GLIBCXX_NOEXCEPT |
5336 | { |
5337 | __glibcxx_requires_string(__s); |
5338 | return this->find(__s, __pos, traits_type::length(__s)); |
5339 | } |
5340 | |
5341 | /** |
5342 | * @brief Find position of a character. |
5343 | * @param __c Character to locate. |
5344 | * @param __pos Index of character to search from (default 0). |
5345 | * @return Index of first occurrence. |
5346 | * |
5347 | * Starting from @a __pos, searches forward for @a __c within |
5348 | * this string. If found, returns the index where it was |
5349 | * found. If not found, returns npos. |
5350 | */ |
5351 | size_type |
5352 | find(_CharT __c, size_type __pos = 0) const _GLIBCXX_NOEXCEPT; |
5353 | |
5354 | #if __cplusplus >= 201703L |
5355 | /** |
5356 | * @brief Find position of a string_view. |
5357 | * @param __svt The object convertible to string_view to locate. |
5358 | * @param __pos Index of character to search from (default 0). |
5359 | * @return Index of start of first occurrence. |
5360 | */ |
5361 | template<typename _Tp> |
5362 | _If_sv<_Tp, size_type> |
5363 | find(const _Tp& __svt, size_type __pos = 0) const |
5364 | noexcept(is_same<_Tp, __sv_type>::value) |
5365 | { |
5366 | __sv_type __sv = __svt; |
5367 | return this->find(__sv.data(), __pos, __sv.size()); |
5368 | } |
5369 | #endif // C++17 |
5370 | |
5371 | /** |
5372 | * @brief Find last position of a string. |
5373 | * @param __str String to locate. |
5374 | * @param __pos Index of character to search back from (default end). |
5375 | * @return Index of start of last occurrence. |
5376 | * |
5377 | * Starting from @a __pos, searches backward for value of @a |
5378 | * __str within this string. If found, returns the index where |
5379 | * it begins. If not found, returns npos. |
5380 | */ |
5381 | size_type |
5382 | rfind(const basic_string& __str, size_type __pos = npos) const |
5383 | _GLIBCXX_NOEXCEPT |
5384 | { return this->rfind(__str.data(), __pos, __str.size()); } |
5385 | |
5386 | /** |
5387 | * @brief Find last position of a C substring. |
5388 | * @param __s C string to locate. |
5389 | * @param __pos Index of character to search back from. |
5390 | * @param __n Number of characters from s to search for. |
5391 | * @return Index of start of last occurrence. |
5392 | * |
5393 | * Starting from @a __pos, searches backward for the first @a |
5394 | * __n characters in @a __s within this string. If found, |
5395 | * returns the index where it begins. If not found, returns |
5396 | * npos. |
5397 | */ |
5398 | size_type |
5399 | rfind(const _CharT* __s, size_type __pos, size_type __n) const |
5400 | _GLIBCXX_NOEXCEPT; |
5401 | |
5402 | /** |
5403 | * @brief Find last position of a C string. |
5404 | * @param __s C string to locate. |
5405 | * @param __pos Index of character to start search at (default end). |
5406 | * @return Index of start of last occurrence. |
5407 | * |
5408 | * Starting from @a __pos, searches backward for the value of |
5409 | * @a __s within this string. If found, returns the index |
5410 | * where it begins. If not found, returns npos. |
5411 | */ |
5412 | size_type |
5413 | rfind(const _CharT* __s, size_type __pos = npos) const _GLIBCXX_NOEXCEPT |
5414 | { |
5415 | __glibcxx_requires_string(__s); |
5416 | return this->rfind(__s, __pos, traits_type::length(__s)); |
5417 | } |
5418 | |
5419 | /** |
5420 | * @brief Find last position of a character. |
5421 | * @param __c Character to locate. |
5422 | * @param __pos Index of character to search back from (default end). |
5423 | * @return Index of last occurrence. |
5424 | * |
5425 | * Starting from @a __pos, searches backward for @a __c within |
5426 | * this string. If found, returns the index where it was |
5427 | * found. If not found, returns npos. |
5428 | */ |
5429 | size_type |
5430 | rfind(_CharT __c, size_type __pos = npos) const _GLIBCXX_NOEXCEPT; |
5431 | |
5432 | #if __cplusplus >= 201703L |
5433 | /** |
5434 | * @brief Find last position of a string_view. |
5435 | * @param __svt The object convertible to string_view to locate. |
5436 | * @param __pos Index of character to search back from (default end). |
5437 | * @return Index of start of last occurrence. |
5438 | */ |
5439 | template<typename _Tp> |
5440 | _If_sv<_Tp, size_type> |
5441 | rfind(const _Tp& __svt, size_type __pos = npos) const |
5442 | noexcept(is_same<_Tp, __sv_type>::value) |
5443 | { |
5444 | __sv_type __sv = __svt; |
5445 | return this->rfind(__sv.data(), __pos, __sv.size()); |
5446 | } |
5447 | #endif // C++17 |
5448 | |
5449 | /** |
5450 | * @brief Find position of a character of string. |
5451 | * @param __str String containing characters to locate. |
5452 | * @param __pos Index of character to search from (default 0). |
5453 | * @return Index of first occurrence. |
5454 | * |
5455 | * Starting from @a __pos, searches forward for one of the |
5456 | * characters of @a __str within this string. If found, |
5457 | * returns the index where it was found. If not found, returns |
5458 | * npos. |
5459 | */ |
5460 | size_type |
5461 | find_first_of(const basic_string& __str, size_type __pos = 0) const |
5462 | _GLIBCXX_NOEXCEPT |
5463 | { return this->find_first_of(__str.data(), __pos, __str.size()); } |
5464 | |
5465 | /** |
5466 | * @brief Find position of a character of C substring. |
5467 | * @param __s String containing characters to locate. |
5468 | * @param __pos Index of character to search from. |
5469 | * @param __n Number of characters from s to search for. |
5470 | * @return Index of first occurrence. |
5471 | * |
5472 | * Starting from @a __pos, searches forward for one of the |
5473 | * first @a __n characters of @a __s within this string. If |
5474 | * found, returns the index where it was found. If not found, |
5475 | * returns npos. |
5476 | */ |
5477 | size_type |
5478 | find_first_of(const _CharT* __s, size_type __pos, size_type __n) const |
5479 | _GLIBCXX_NOEXCEPT; |
5480 | |
5481 | /** |
5482 | * @brief Find position of a character of C string. |
5483 | * @param __s String containing characters to locate. |
5484 | * @param __pos Index of character to search from (default 0). |
5485 | * @return Index of first occurrence. |
5486 | * |
5487 | * Starting from @a __pos, searches forward for one of the |
5488 | * characters of @a __s within this string. If found, returns |
5489 | * the index where it was found. If not found, returns npos. |
5490 | */ |
5491 | size_type |
5492 | find_first_of(const _CharT* __s, size_type __pos = 0) const |
5493 | _GLIBCXX_NOEXCEPT |
5494 | { |
5495 | __glibcxx_requires_string(__s); |
5496 | return this->find_first_of(__s, __pos, traits_type::length(__s)); |
5497 | } |
5498 | |
5499 | /** |
5500 | * @brief Find position of a character. |
5501 | * @param __c Character to locate. |
5502 | * @param __pos Index of character to search from (default 0). |
5503 | * @return Index of first occurrence. |
5504 | * |
5505 | * Starting from @a __pos, searches forward for the character |
5506 | * @a __c within this string. If found, returns the index |
5507 | * where it was found. If not found, returns npos. |
5508 | * |
5509 | * Note: equivalent to find(__c, __pos). |
5510 | */ |
5511 | size_type |
5512 | find_first_of(_CharT __c, size_type __pos = 0) const _GLIBCXX_NOEXCEPT |
5513 | { return this->find(__c, __pos); } |
5514 | |
5515 | #if __cplusplus >= 201703L |
5516 | /** |
5517 | * @brief Find position of a character of a string_view. |
5518 | * @param __svt An object convertible to string_view containing |
5519 | * characters to locate. |
5520 | * @param __pos Index of character to search from (default 0). |
5521 | * @return Index of first occurrence. |
5522 | */ |
5523 | template<typename _Tp> |
5524 | _If_sv<_Tp, size_type> |
5525 | find_first_of(const _Tp& __svt, size_type __pos = 0) const |
5526 | noexcept(is_same<_Tp, __sv_type>::value) |
5527 | { |
5528 | __sv_type __sv = __svt; |
5529 | return this->find_first_of(__sv.data(), __pos, __sv.size()); |
5530 | } |
5531 | #endif // C++17 |
5532 | |
5533 | /** |
5534 | * @brief Find last position of a character of string. |
5535 | * @param __str String containing characters to locate. |
5536 | * @param __pos Index of character to search back from (default end). |
5537 | * @return Index of last occurrence. |
5538 | * |
5539 | * Starting from @a __pos, searches backward for one of the |
5540 | * characters of @a __str within this string. If found, |
5541 | * returns the index where it was found. If not found, returns |
5542 | * npos. |
5543 | */ |
5544 | size_type |
5545 | find_last_of(const basic_string& __str, size_type __pos = npos) const |
5546 | _GLIBCXX_NOEXCEPT |
5547 | { return this->find_last_of(__str.data(), __pos, __str.size()); } |
5548 | |
5549 | /** |
5550 | * @brief Find last position of a character of C substring. |
5551 | * @param __s C string containing characters to locate. |
5552 | * @param __pos Index of character to search back from. |
5553 | * @param __n Number of characters from s to search for. |
5554 | * @return Index of last occurrence. |
5555 | * |
5556 | * Starting from @a __pos, searches backward for one of the |
5557 | * first @a __n characters of @a __s within this string. If |
5558 | * found, returns the index where it was found. If not found, |
5559 | * returns npos. |
5560 | */ |
5561 | size_type |
5562 | find_last_of(const _CharT* __s, size_type __pos, size_type __n) const |
5563 | _GLIBCXX_NOEXCEPT; |
5564 | |
5565 | /** |
5566 | * @brief Find last position of a character of C string. |
5567 | * @param __s C string containing characters to locate. |
5568 | * @param __pos Index of character to search back from (default end). |
5569 | * @return Index of last occurrence. |
5570 | * |
5571 | * Starting from @a __pos, searches backward for one of the |
5572 | * characters of @a __s within this string. If found, returns |
5573 | * the index where it was found. If not found, returns npos. |
5574 | */ |
5575 | size_type |
5576 | find_last_of(const _CharT* __s, size_type __pos = npos) const |
5577 | _GLIBCXX_NOEXCEPT |
5578 | { |
5579 | __glibcxx_requires_string(__s); |
5580 | return this->find_last_of(__s, __pos, traits_type::length(__s)); |
5581 | } |
5582 | |
5583 | /** |
5584 | * @brief Find last position of a character. |
5585 | * @param __c Character to locate. |
5586 | * @param __pos Index of character to search back from (default end). |
5587 | * @return Index of last occurrence. |
5588 | * |
5589 | * Starting from @a __pos, searches backward for @a __c within |
5590 | * this string. If found, returns the index where it was |
5591 | * found. If not found, returns npos. |
5592 | * |
5593 | * Note: equivalent to rfind(__c, __pos). |
5594 | */ |
5595 | size_type |
5596 | find_last_of(_CharT __c, size_type __pos = npos) const _GLIBCXX_NOEXCEPT |
5597 | { return this->rfind(__c, __pos); } |
5598 | |
5599 | #if __cplusplus >= 201703L |
5600 | /** |
5601 | * @brief Find last position of a character of string. |
5602 | * @param __svt An object convertible to string_view containing |
5603 | * characters to locate. |
5604 | * @param __pos Index of character to search back from (default end). |
5605 | * @return Index of last occurrence. |
5606 | */ |
5607 | template<typename _Tp> |
5608 | _If_sv<_Tp, size_type> |
5609 | find_last_of(const _Tp& __svt, size_type __pos = npos) const |
5610 | noexcept(is_same<_Tp, __sv_type>::value) |
5611 | { |
5612 | __sv_type __sv = __svt; |
5613 | return this->find_last_of(__sv.data(), __pos, __sv.size()); |
5614 | } |
5615 | #endif // C++17 |
5616 | |
5617 | /** |
5618 | * @brief Find position of a character not in string. |
5619 | * @param __str String containing characters to avoid. |
5620 | * @param __pos Index of character to search from (default 0). |
5621 | * @return Index of first occurrence. |
5622 | * |
5623 | * Starting from @a __pos, searches forward for a character not contained |
5624 | * in @a __str within this string. If found, returns the index where it |
5625 | * was found. If not found, returns npos. |
5626 | */ |
5627 | size_type |
5628 | find_first_not_of(const basic_string& __str, size_type __pos = 0) const |
5629 | _GLIBCXX_NOEXCEPT |
5630 | { return this->find_first_not_of(__str.data(), __pos, __str.size()); } |
5631 | |
5632 | /** |
5633 | * @brief Find position of a character not in C substring. |
5634 | * @param __s C string containing characters to avoid. |
5635 | * @param __pos Index of character to search from. |
5636 | * @param __n Number of characters from __s to consider. |
5637 | * @return Index of first occurrence. |
5638 | * |
5639 | * Starting from @a __pos, searches forward for a character not |
5640 | * contained in the first @a __n characters of @a __s within |
5641 | * this string. If found, returns the index where it was |
5642 | * found. If not found, returns npos. |
5643 | */ |
5644 | size_type |
5645 | find_first_not_of(const _CharT* __s, size_type __pos, |
5646 | size_type __n) const _GLIBCXX_NOEXCEPT; |
5647 | |
5648 | /** |
5649 | * @brief Find position of a character not in C string. |
5650 | * @param __s C string containing characters to avoid. |
5651 | * @param __pos Index of character to search from (default 0). |
5652 | * @return Index of first occurrence. |
5653 | * |
5654 | * Starting from @a __pos, searches forward for a character not |
5655 | * contained in @a __s within this string. If found, returns |
5656 | * the index where it was found. If not found, returns npos. |
5657 | */ |
5658 | size_type |
5659 | find_first_not_of(const _CharT* __s, size_type __pos = 0) const |
5660 | _GLIBCXX_NOEXCEPT |
5661 | { |
5662 | __glibcxx_requires_string(__s); |
5663 | return this->find_first_not_of(__s, __pos, traits_type::length(__s)); |
5664 | } |
5665 | |
5666 | /** |
5667 | * @brief Find position of a different character. |
5668 | * @param __c Character to avoid. |
5669 | * @param __pos Index of character to search from (default 0). |
5670 | * @return Index of first occurrence. |
5671 | * |
5672 | * Starting from @a __pos, searches forward for a character |
5673 | * other than @a __c within this string. If found, returns the |
5674 | * index where it was found. If not found, returns npos. |
5675 | */ |
5676 | size_type |
5677 | find_first_not_of(_CharT __c, size_type __pos = 0) const |
5678 | _GLIBCXX_NOEXCEPT; |
5679 | |
5680 | #if __cplusplus >= 201703L |
5681 | /** |
5682 | * @brief Find position of a character not in a string_view. |
5683 | * @param __svt An object convertible to string_view containing |
5684 | * characters to avoid. |
5685 | * @param __pos Index of character to search from (default 0). |
5686 | * @return Index of first occurrence. |
5687 | */ |
5688 | template<typename _Tp> |
5689 | _If_sv<_Tp, size_type> |
5690 | find_first_not_of(const _Tp& __svt, size_type __pos = 0) const |
5691 | noexcept(is_same<_Tp, __sv_type>::value) |
5692 | { |
5693 | __sv_type __sv = __svt; |
5694 | return this->find_first_not_of(__sv.data(), __pos, __sv.size()); |
5695 | } |
5696 | #endif // C++17 |
5697 | |
5698 | /** |
5699 | * @brief Find last position of a character not in string. |
5700 | * @param __str String containing characters to avoid. |
5701 | * @param __pos Index of character to search back from (default end). |
5702 | * @return Index of last occurrence. |
5703 | * |
5704 | * Starting from @a __pos, searches backward for a character |
5705 | * not contained in @a __str within this string. If found, |
5706 | * returns the index where it was found. If not found, returns |
5707 | * npos. |
5708 | */ |
5709 | size_type |
5710 | find_last_not_of(const basic_string& __str, size_type __pos = npos) const |
5711 | _GLIBCXX_NOEXCEPT |
5712 | { return this->find_last_not_of(__str.data(), __pos, __str.size()); } |
5713 | |
5714 | /** |
5715 | * @brief Find last position of a character not in C substring. |
5716 | * @param __s C string containing characters to avoid. |
5717 | * @param __pos Index of character to search back from. |
5718 | * @param __n Number of characters from s to consider. |
5719 | * @return Index of last occurrence. |
5720 | * |
5721 | * Starting from @a __pos, searches backward for a character not |
5722 | * contained in the first @a __n characters of @a __s within this string. |
5723 | * If found, returns the index where it was found. If not found, |
5724 | * returns npos. |
5725 | */ |
5726 | size_type |
5727 | find_last_not_of(const _CharT* __s, size_type __pos, |
5728 | size_type __n) const _GLIBCXX_NOEXCEPT; |
5729 | /** |
5730 | * @brief Find last position of a character not in C string. |
5731 | * @param __s C string containing characters to avoid. |
5732 | * @param __pos Index of character to search back from (default end). |
5733 | * @return Index of last occurrence. |
5734 | * |
5735 | * Starting from @a __pos, searches backward for a character |
5736 | * not contained in @a __s within this string. If found, |
5737 | * returns the index where it was found. If not found, returns |
5738 | * npos. |
5739 | */ |
5740 | size_type |
5741 | find_last_not_of(const _CharT* __s, size_type __pos = npos) const |
5742 | _GLIBCXX_NOEXCEPT |
5743 | { |
5744 | __glibcxx_requires_string(__s); |
5745 | return this->find_last_not_of(__s, __pos, traits_type::length(__s)); |
5746 | } |
5747 | |
5748 | /** |
5749 | * @brief Find last position of a different character. |
5750 | * @param __c Character to avoid. |
5751 | * @param __pos Index of character to search back from (default end). |
5752 | * @return Index of last occurrence. |
5753 | * |
5754 | * Starting from @a __pos, searches backward for a character other than |
5755 | * @a __c within this string. If found, returns the index where it was |
5756 | * found. If not found, returns npos. |
5757 | */ |
5758 | size_type |
5759 | find_last_not_of(_CharT __c, size_type __pos = npos) const |
5760 | _GLIBCXX_NOEXCEPT; |
5761 | |
5762 | #if __cplusplus >= 201703L |
5763 | /** |
5764 | * @brief Find last position of a character not in a string_view. |
5765 | * @param __svt An object convertible to string_view containing |
5766 | * characters to avoid. |
5767 | * @param __pos Index of character to search back from (default end). |
5768 | * @return Index of last occurrence. |
5769 | */ |
5770 | template<typename _Tp> |
5771 | _If_sv<_Tp, size_type> |
5772 | find_last_not_of(const _Tp& __svt, size_type __pos = npos) const |
5773 | noexcept(is_same<_Tp, __sv_type>::value) |
5774 | { |
5775 | __sv_type __sv = __svt; |
5776 | return this->find_last_not_of(__sv.data(), __pos, __sv.size()); |
5777 | } |
5778 | #endif // C++17 |
5779 | |
5780 | /** |
5781 | * @brief Get a substring. |
5782 | * @param __pos Index of first character (default 0). |
5783 | * @param __n Number of characters in substring (default remainder). |
5784 | * @return The new string. |
5785 | * @throw std::out_of_range If __pos > size(). |
5786 | * |
5787 | * Construct and return a new string using the @a __n |
5788 | * characters starting at @a __pos. If the string is too |
5789 | * short, use the remainder of the characters. If @a __pos is |
5790 | * beyond the end of the string, out_of_range is thrown. |
5791 | */ |
5792 | basic_string |
5793 | substr(size_type __pos = 0, size_type __n = npos) const |
5794 | { return basic_string(*this, |
5795 | _M_check(__pos, "basic_string::substr" ), __n); } |
5796 | |
5797 | /** |
5798 | * @brief Compare to a string. |
5799 | * @param __str String to compare against. |
5800 | * @return Integer < 0, 0, or > 0. |
5801 | * |
5802 | * Returns an integer < 0 if this string is ordered before @a |
5803 | * __str, 0 if their values are equivalent, or > 0 if this |
5804 | * string is ordered after @a __str. Determines the effective |
5805 | * length rlen of the strings to compare as the smallest of |
5806 | * size() and str.size(). The function then compares the two |
5807 | * strings by calling traits::compare(data(), str.data(),rlen). |
5808 | * If the result of the comparison is nonzero returns it, |
5809 | * otherwise the shorter one is ordered first. |
5810 | */ |
5811 | int |
5812 | compare(const basic_string& __str) const |
5813 | { |
5814 | const size_type __size = this->size(); |
5815 | const size_type __osize = __str.size(); |
5816 | const size_type __len = std::min(__size, __osize); |
5817 | |
5818 | int __r = traits_type::compare(_M_data(), __str.data(), __len); |
5819 | if (!__r) |
5820 | __r = _S_compare(__size, __osize); |
5821 | return __r; |
5822 | } |
5823 | |
5824 | #if __cplusplus >= 201703L |
5825 | /** |
5826 | * @brief Compare to a string_view. |
5827 | * @param __svt An object convertible to string_view to compare against. |
5828 | * @return Integer < 0, 0, or > 0. |
5829 | */ |
5830 | template<typename _Tp> |
5831 | _If_sv<_Tp, int> |
5832 | compare(const _Tp& __svt) const |
5833 | noexcept(is_same<_Tp, __sv_type>::value) |
5834 | { |
5835 | __sv_type __sv = __svt; |
5836 | const size_type __size = this->size(); |
5837 | const size_type __osize = __sv.size(); |
5838 | const size_type __len = std::min(__size, __osize); |
5839 | |
5840 | int __r = traits_type::compare(_M_data(), __sv.data(), __len); |
5841 | if (!__r) |
5842 | __r = _S_compare(__size, __osize); |
5843 | return __r; |
5844 | } |
5845 | |
5846 | /** |
5847 | * @brief Compare to a string_view. |
5848 | * @param __pos A position in the string to start comparing from. |
5849 | * @param __n The number of characters to compare. |
5850 | * @param __svt An object convertible to string_view to compare |
5851 | * against. |
5852 | * @return Integer < 0, 0, or > 0. |
5853 | */ |
5854 | template<typename _Tp> |
5855 | _If_sv<_Tp, int> |
5856 | compare(size_type __pos, size_type __n, const _Tp& __svt) const |
5857 | noexcept(is_same<_Tp, __sv_type>::value) |
5858 | { |
5859 | __sv_type __sv = __svt; |
5860 | return __sv_type(*this).substr(__pos, __n).compare(__sv); |
5861 | } |
5862 | |
5863 | /** |
5864 | * @brief Compare to a string_view. |
5865 | * @param __pos1 A position in the string to start comparing from. |
5866 | * @param __n1 The number of characters to compare. |
5867 | * @param __svt An object convertible to string_view to compare |
5868 | * against. |
5869 | * @param __pos2 A position in the string_view to start comparing from. |
5870 | * @param __n2 The number of characters to compare. |
5871 | * @return Integer < 0, 0, or > 0. |
5872 | */ |
5873 | template<typename _Tp> |
5874 | _If_sv<_Tp, int> |
5875 | compare(size_type __pos1, size_type __n1, const _Tp& __svt, |
5876 | size_type __pos2, size_type __n2 = npos) const |
5877 | noexcept(is_same<_Tp, __sv_type>::value) |
5878 | { |
5879 | __sv_type __sv = __svt; |
5880 | return __sv_type(*this) |
5881 | .substr(__pos1, __n1).compare(__sv.substr(__pos2, __n2)); |
5882 | } |
5883 | #endif // C++17 |
5884 | |
5885 | /** |
5886 | * @brief Compare substring to a string. |
5887 | * @param __pos Index of first character of substring. |
5888 | * @param __n Number of characters in substring. |
5889 | * @param __str String to compare against. |
5890 | * @return Integer < 0, 0, or > 0. |
5891 | * |
5892 | * Form the substring of this string from the @a __n characters |
5893 | * starting at @a __pos. Returns an integer < 0 if the |
5894 | * substring is ordered before @a __str, 0 if their values are |
5895 | * equivalent, or > 0 if the substring is ordered after @a |
5896 | * __str. Determines the effective length rlen of the strings |
5897 | * to compare as the smallest of the length of the substring |
5898 | * and @a __str.size(). The function then compares the two |
5899 | * strings by calling |
5900 | * traits::compare(substring.data(),str.data(),rlen). If the |
5901 | * result of the comparison is nonzero returns it, otherwise |
5902 | * the shorter one is ordered first. |
5903 | */ |
5904 | int |
5905 | compare(size_type __pos, size_type __n, const basic_string& __str) const; |
5906 | |
5907 | /** |
5908 | * @brief Compare substring to a substring. |
5909 | * @param __pos1 Index of first character of substring. |
5910 | * @param __n1 Number of characters in substring. |
5911 | * @param __str String to compare against. |
5912 | * @param __pos2 Index of first character of substring of str. |
5913 | * @param __n2 Number of characters in substring of str. |
5914 | * @return Integer < 0, 0, or > 0. |
5915 | * |
5916 | * Form the substring of this string from the @a __n1 |
5917 | * characters starting at @a __pos1. Form the substring of @a |
5918 | * __str from the @a __n2 characters starting at @a __pos2. |
5919 | * Returns an integer < 0 if this substring is ordered before |
5920 | * the substring of @a __str, 0 if their values are equivalent, |
5921 | * or > 0 if this substring is ordered after the substring of |
5922 | * @a __str. Determines the effective length rlen of the |
5923 | * strings to compare as the smallest of the lengths of the |
5924 | * substrings. The function then compares the two strings by |
5925 | * calling |
5926 | * traits::compare(substring.data(),str.substr(pos2,n2).data(),rlen). |
5927 | * If the result of the comparison is nonzero returns it, |
5928 | * otherwise the shorter one is ordered first. |
5929 | */ |
5930 | int |
5931 | compare(size_type __pos1, size_type __n1, const basic_string& __str, |
5932 | size_type __pos2, size_type __n2 = npos) const; |
5933 | |
5934 | /** |
5935 | * @brief Compare to a C string. |
5936 | * @param __s C string to compare against. |
5937 | * @return Integer < 0, 0, or > 0. |
5938 | * |
5939 | * Returns an integer < 0 if this string is ordered before @a __s, 0 if |
5940 | * their values are equivalent, or > 0 if this string is ordered after |
5941 | * @a __s. Determines the effective length rlen of the strings to |
5942 | * compare as the smallest of size() and the length of a string |
5943 | * constructed from @a __s. The function then compares the two strings |
5944 | * by calling traits::compare(data(),s,rlen). If the result of the |
5945 | * comparison is nonzero returns it, otherwise the shorter one is |
5946 | * ordered first. |
5947 | */ |
5948 | int |
5949 | compare(const _CharT* __s) const _GLIBCXX_NOEXCEPT; |
5950 | |
5951 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
5952 | // 5 String::compare specification questionable |
5953 | /** |
5954 | * @brief Compare substring to a C string. |
5955 | * @param __pos Index of first character of substring. |
5956 | * @param __n1 Number of characters in substring. |
5957 | * @param __s C string to compare against. |
5958 | * @return Integer < 0, 0, or > 0. |
5959 | * |
5960 | * Form the substring of this string from the @a __n1 |
5961 | * characters starting at @a pos. Returns an integer < 0 if |
5962 | * the substring is ordered before @a __s, 0 if their values |
5963 | * are equivalent, or > 0 if the substring is ordered after @a |
5964 | * __s. Determines the effective length rlen of the strings to |
5965 | * compare as the smallest of the length of the substring and |
5966 | * the length of a string constructed from @a __s. The |
5967 | * function then compares the two string by calling |
5968 | * traits::compare(substring.data(),__s,rlen). If the result of |
5969 | * the comparison is nonzero returns it, otherwise the shorter |
5970 | * one is ordered first. |
5971 | */ |
5972 | int |
5973 | compare(size_type __pos, size_type __n1, const _CharT* __s) const; |
5974 | |
5975 | /** |
5976 | * @brief Compare substring against a character %array. |
5977 | * @param __pos Index of first character of substring. |
5978 | * @param __n1 Number of characters in substring. |
5979 | * @param __s character %array to compare against. |
5980 | * @param __n2 Number of characters of s. |
5981 | * @return Integer < 0, 0, or > 0. |
5982 | * |
5983 | * Form the substring of this string from the @a __n1 |
5984 | * characters starting at @a __pos. Form a string from the |
5985 | * first @a __n2 characters of @a __s. Returns an integer < 0 |
5986 | * if this substring is ordered before the string from @a __s, |
5987 | * 0 if their values are equivalent, or > 0 if this substring |
5988 | * is ordered after the string from @a __s. Determines the |
5989 | * effective length rlen of the strings to compare as the |
5990 | * smallest of the length of the substring and @a __n2. The |
5991 | * function then compares the two strings by calling |
5992 | * traits::compare(substring.data(),s,rlen). If the result of |
5993 | * the comparison is nonzero returns it, otherwise the shorter |
5994 | * one is ordered first. |
5995 | * |
5996 | * NB: s must have at least n2 characters, '\\0' has |
5997 | * no special meaning. |
5998 | */ |
5999 | int |
6000 | compare(size_type __pos, size_type __n1, const _CharT* __s, |
6001 | size_type __n2) const; |
6002 | |
6003 | #if __cplusplus > 201703L |
6004 | bool |
6005 | starts_with(basic_string_view<_CharT, _Traits> __x) const noexcept |
6006 | { return __sv_type(this->data(), this->size()).starts_with(__x); } |
6007 | |
6008 | bool |
6009 | starts_with(_CharT __x) const noexcept |
6010 | { return __sv_type(this->data(), this->size()).starts_with(__x); } |
6011 | |
6012 | bool |
6013 | starts_with(const _CharT* __x) const noexcept |
6014 | { return __sv_type(this->data(), this->size()).starts_with(__x); } |
6015 | |
6016 | bool |
6017 | ends_with(basic_string_view<_CharT, _Traits> __x) const noexcept |
6018 | { return __sv_type(this->data(), this->size()).ends_with(__x); } |
6019 | |
6020 | bool |
6021 | ends_with(_CharT __x) const noexcept |
6022 | { return __sv_type(this->data(), this->size()).ends_with(__x); } |
6023 | |
6024 | bool |
6025 | ends_with(const _CharT* __x) const noexcept |
6026 | { return __sv_type(this->data(), this->size()).ends_with(__x); } |
6027 | #endif // C++20 |
6028 | |
6029 | #if __cplusplus > 202011L |
6030 | bool |
6031 | contains(basic_string_view<_CharT, _Traits> __x) const noexcept |
6032 | { return __sv_type(this->data(), this->size()).contains(__x); } |
6033 | |
6034 | bool |
6035 | contains(_CharT __x) const noexcept |
6036 | { return __sv_type(this->data(), this->size()).contains(__x); } |
6037 | |
6038 | bool |
6039 | contains(const _CharT* __x) const noexcept |
6040 | { return __sv_type(this->data(), this->size()).contains(__x); } |
6041 | #endif // C++23 |
6042 | |
6043 | # ifdef _GLIBCXX_TM_TS_INTERNAL |
6044 | friend void |
6045 | ::_txnal_cow_string_C1_for_exceptions(void* that, const char* s, |
6046 | void* exc); |
6047 | friend const char* |
6048 | ::_txnal_cow_string_c_str(const void *that); |
6049 | friend void |
6050 | ::_txnal_cow_string_D1(void *that); |
6051 | friend void |
6052 | ::_txnal_cow_string_D1_commit(void *that); |
6053 | # endif |
6054 | }; |
6055 | #endif // !_GLIBCXX_USE_CXX11_ABI |
6056 | |
6057 | #if __cpp_deduction_guides >= 201606 |
6058 | _GLIBCXX_BEGIN_NAMESPACE_CXX11 |
6059 | template<typename _InputIterator, typename _CharT |
6060 | = typename iterator_traits<_InputIterator>::value_type, |
6061 | typename _Allocator = allocator<_CharT>, |
6062 | typename = _RequireInputIter<_InputIterator>, |
6063 | typename = _RequireAllocator<_Allocator>> |
6064 | basic_string(_InputIterator, _InputIterator, _Allocator = _Allocator()) |
6065 | -> basic_string<_CharT, char_traits<_CharT>, _Allocator>; |
6066 | |
6067 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
6068 | // 3075. basic_string needs deduction guides from basic_string_view |
6069 | template<typename _CharT, typename _Traits, |
6070 | typename _Allocator = allocator<_CharT>, |
6071 | typename = _RequireAllocator<_Allocator>> |
6072 | basic_string(basic_string_view<_CharT, _Traits>, const _Allocator& = _Allocator()) |
6073 | -> basic_string<_CharT, _Traits, _Allocator>; |
6074 | |
6075 | template<typename _CharT, typename _Traits, |
6076 | typename _Allocator = allocator<_CharT>, |
6077 | typename = _RequireAllocator<_Allocator>> |
6078 | basic_string(basic_string_view<_CharT, _Traits>, |
6079 | typename basic_string<_CharT, _Traits, _Allocator>::size_type, |
6080 | typename basic_string<_CharT, _Traits, _Allocator>::size_type, |
6081 | const _Allocator& = _Allocator()) |
6082 | -> basic_string<_CharT, _Traits, _Allocator>; |
6083 | _GLIBCXX_END_NAMESPACE_CXX11 |
6084 | #endif |
6085 | |
6086 | // operator+ |
6087 | /** |
6088 | * @brief Concatenate two strings. |
6089 | * @param __lhs First string. |
6090 | * @param __rhs Last string. |
6091 | * @return New string with value of @a __lhs followed by @a __rhs. |
6092 | */ |
6093 | template<typename _CharT, typename _Traits, typename _Alloc> |
6094 | basic_string<_CharT, _Traits, _Alloc> |
6095 | operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs, |
6096 | const basic_string<_CharT, _Traits, _Alloc>& __rhs) |
6097 | { |
6098 | basic_string<_CharT, _Traits, _Alloc> __str(__lhs); |
6099 | __str.append(__rhs); |
6100 | return __str; |
6101 | } |
6102 | |
6103 | /** |
6104 | * @brief Concatenate C string and string. |
6105 | * @param __lhs First string. |
6106 | * @param __rhs Last string. |
6107 | * @return New string with value of @a __lhs followed by @a __rhs. |
6108 | */ |
6109 | template<typename _CharT, typename _Traits, typename _Alloc> |
6110 | basic_string<_CharT,_Traits,_Alloc> |
6111 | operator+(const _CharT* __lhs, |
6112 | const basic_string<_CharT,_Traits,_Alloc>& __rhs); |
6113 | |
6114 | /** |
6115 | * @brief Concatenate character and string. |
6116 | * @param __lhs First string. |
6117 | * @param __rhs Last string. |
6118 | * @return New string with @a __lhs followed by @a __rhs. |
6119 | */ |
6120 | template<typename _CharT, typename _Traits, typename _Alloc> |
6121 | basic_string<_CharT,_Traits,_Alloc> |
6122 | operator+(_CharT __lhs, const basic_string<_CharT,_Traits,_Alloc>& __rhs); |
6123 | |
6124 | /** |
6125 | * @brief Concatenate string and C string. |
6126 | * @param __lhs First string. |
6127 | * @param __rhs Last string. |
6128 | * @return New string with @a __lhs followed by @a __rhs. |
6129 | */ |
6130 | template<typename _CharT, typename _Traits, typename _Alloc> |
6131 | inline basic_string<_CharT, _Traits, _Alloc> |
6132 | operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs, |
6133 | const _CharT* __rhs) |
6134 | { |
6135 | basic_string<_CharT, _Traits, _Alloc> __str(__lhs); |
6136 | __str.append(__rhs); |
6137 | return __str; |
6138 | } |
6139 | |
6140 | /** |
6141 | * @brief Concatenate string and character. |
6142 | * @param __lhs First string. |
6143 | * @param __rhs Last string. |
6144 | * @return New string with @a __lhs followed by @a __rhs. |
6145 | */ |
6146 | template<typename _CharT, typename _Traits, typename _Alloc> |
6147 | inline basic_string<_CharT, _Traits, _Alloc> |
6148 | operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs, _CharT __rhs) |
6149 | { |
6150 | typedef basic_string<_CharT, _Traits, _Alloc> __string_type; |
6151 | typedef typename __string_type::size_type __size_type; |
6152 | __string_type __str(__lhs); |
6153 | __str.append(__size_type(1), __rhs); |
6154 | return __str; |
6155 | } |
6156 | |
6157 | #if __cplusplus >= 201103L |
6158 | template<typename _CharT, typename _Traits, typename _Alloc> |
6159 | inline basic_string<_CharT, _Traits, _Alloc> |
6160 | operator+(basic_string<_CharT, _Traits, _Alloc>&& __lhs, |
6161 | const basic_string<_CharT, _Traits, _Alloc>& __rhs) |
6162 | { return std::move(__lhs.append(__rhs)); } |
6163 | |
6164 | template<typename _CharT, typename _Traits, typename _Alloc> |
6165 | inline basic_string<_CharT, _Traits, _Alloc> |
6166 | operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs, |
6167 | basic_string<_CharT, _Traits, _Alloc>&& __rhs) |
6168 | { return std::move(__rhs.insert(0, __lhs)); } |
6169 | |
6170 | template<typename _CharT, typename _Traits, typename _Alloc> |
6171 | inline basic_string<_CharT, _Traits, _Alloc> |
6172 | operator+(basic_string<_CharT, _Traits, _Alloc>&& __lhs, |
6173 | basic_string<_CharT, _Traits, _Alloc>&& __rhs) |
6174 | { |
6175 | #if _GLIBCXX_USE_CXX11_ABI |
6176 | using _Alloc_traits = allocator_traits<_Alloc>; |
6177 | bool __use_rhs = false; |
6178 | if _GLIBCXX17_CONSTEXPR (typename _Alloc_traits::is_always_equal{}) |
6179 | __use_rhs = true; |
6180 | else if (__lhs.get_allocator() == __rhs.get_allocator()) |
6181 | __use_rhs = true; |
6182 | if (__use_rhs) |
6183 | #endif |
6184 | { |
6185 | const auto __size = __lhs.size() + __rhs.size(); |
6186 | if (__size > __lhs.capacity() && __size <= __rhs.capacity()) |
6187 | return std::move(__rhs.insert(0, __lhs)); |
6188 | } |
6189 | return std::move(__lhs.append(__rhs)); |
6190 | } |
6191 | |
6192 | template<typename _CharT, typename _Traits, typename _Alloc> |
6193 | inline basic_string<_CharT, _Traits, _Alloc> |
6194 | operator+(const _CharT* __lhs, |
6195 | basic_string<_CharT, _Traits, _Alloc>&& __rhs) |
6196 | { return std::move(__rhs.insert(0, __lhs)); } |
6197 | |
6198 | template<typename _CharT, typename _Traits, typename _Alloc> |
6199 | inline basic_string<_CharT, _Traits, _Alloc> |
6200 | operator+(_CharT __lhs, |
6201 | basic_string<_CharT, _Traits, _Alloc>&& __rhs) |
6202 | { return std::move(__rhs.insert(0, 1, __lhs)); } |
6203 | |
6204 | template<typename _CharT, typename _Traits, typename _Alloc> |
6205 | inline basic_string<_CharT, _Traits, _Alloc> |
6206 | operator+(basic_string<_CharT, _Traits, _Alloc>&& __lhs, |
6207 | const _CharT* __rhs) |
6208 | { return std::move(__lhs.append(__rhs)); } |
6209 | |
6210 | template<typename _CharT, typename _Traits, typename _Alloc> |
6211 | inline basic_string<_CharT, _Traits, _Alloc> |
6212 | operator+(basic_string<_CharT, _Traits, _Alloc>&& __lhs, |
6213 | _CharT __rhs) |
6214 | { return std::move(__lhs.append(1, __rhs)); } |
6215 | #endif |
6216 | |
6217 | // operator == |
6218 | /** |
6219 | * @brief Test equivalence of two strings. |
6220 | * @param __lhs First string. |
6221 | * @param __rhs Second string. |
6222 | * @return True if @a __lhs.compare(@a __rhs) == 0. False otherwise. |
6223 | */ |
6224 | template<typename _CharT, typename _Traits, typename _Alloc> |
6225 | inline bool |
6226 | operator==(const basic_string<_CharT, _Traits, _Alloc>& __lhs, |
6227 | const basic_string<_CharT, _Traits, _Alloc>& __rhs) |
6228 | _GLIBCXX_NOEXCEPT |
6229 | { return __lhs.compare(__rhs) == 0; } |
6230 | |
6231 | template<typename _CharT> |
6232 | inline |
6233 | typename __gnu_cxx::__enable_if<__is_char<_CharT>::__value, bool>::__type |
6234 | operator==(const basic_string<_CharT>& __lhs, |
6235 | const basic_string<_CharT>& __rhs) _GLIBCXX_NOEXCEPT |
6236 | { return (__lhs.size() == __rhs.size() |
6237 | && !std::char_traits<_CharT>::compare(__lhs.data(), __rhs.data(), |
6238 | __lhs.size())); } |
6239 | |
6240 | /** |
6241 | * @brief Test equivalence of string and C string. |
6242 | * @param __lhs String. |
6243 | * @param __rhs C string. |
6244 | * @return True if @a __lhs.compare(@a __rhs) == 0. False otherwise. |
6245 | */ |
6246 | template<typename _CharT, typename _Traits, typename _Alloc> |
6247 | inline bool |
6248 | operator==(const basic_string<_CharT, _Traits, _Alloc>& __lhs, |
6249 | const _CharT* __rhs) |
6250 | { return __lhs.compare(__rhs) == 0; } |
6251 | |
6252 | #if __cpp_lib_three_way_comparison |
6253 | /** |
6254 | * @brief Three-way comparison of a string and a C string. |
6255 | * @param __lhs A string. |
6256 | * @param __rhs A null-terminated string. |
6257 | * @return A value indicating whether `__lhs` is less than, equal to, |
6258 | * greater than, or incomparable with `__rhs`. |
6259 | */ |
6260 | template<typename _CharT, typename _Traits, typename _Alloc> |
6261 | inline auto |
6262 | operator<=>(const basic_string<_CharT, _Traits, _Alloc>& __lhs, |
6263 | const basic_string<_CharT, _Traits, _Alloc>& __rhs) noexcept |
6264 | -> decltype(__detail::__char_traits_cmp_cat<_Traits>(0)) |
6265 | { return __detail::__char_traits_cmp_cat<_Traits>(__lhs.compare(__rhs)); } |
6266 | |
6267 | /** |
6268 | * @brief Three-way comparison of a string and a C string. |
6269 | * @param __lhs A string. |
6270 | * @param __rhs A null-terminated string. |
6271 | * @return A value indicating whether `__lhs` is less than, equal to, |
6272 | * greater than, or incomparable with `__rhs`. |
6273 | */ |
6274 | template<typename _CharT, typename _Traits, typename _Alloc> |
6275 | inline auto |
6276 | operator<=>(const basic_string<_CharT, _Traits, _Alloc>& __lhs, |
6277 | const _CharT* __rhs) noexcept |
6278 | -> decltype(__detail::__char_traits_cmp_cat<_Traits>(0)) |
6279 | { return __detail::__char_traits_cmp_cat<_Traits>(__lhs.compare(__rhs)); } |
6280 | #else |
6281 | /** |
6282 | * @brief Test equivalence of C string and string. |
6283 | * @param __lhs C string. |
6284 | * @param __rhs String. |
6285 | * @return True if @a __rhs.compare(@a __lhs) == 0. False otherwise. |
6286 | */ |
6287 | template<typename _CharT, typename _Traits, typename _Alloc> |
6288 | inline bool |
6289 | operator==(const _CharT* __lhs, |
6290 | const basic_string<_CharT, _Traits, _Alloc>& __rhs) |
6291 | { return __rhs.compare(__lhs) == 0; } |
6292 | |
6293 | // operator != |
6294 | /** |
6295 | * @brief Test difference of two strings. |
6296 | * @param __lhs First string. |
6297 | * @param __rhs Second string. |
6298 | * @return True if @a __lhs.compare(@a __rhs) != 0. False otherwise. |
6299 | */ |
6300 | template<typename _CharT, typename _Traits, typename _Alloc> |
6301 | inline bool |
6302 | operator!=(const basic_string<_CharT, _Traits, _Alloc>& __lhs, |
6303 | const basic_string<_CharT, _Traits, _Alloc>& __rhs) |
6304 | _GLIBCXX_NOEXCEPT |
6305 | { return !(__lhs == __rhs); } |
6306 | |
6307 | /** |
6308 | * @brief Test difference of C string and string. |
6309 | * @param __lhs C string. |
6310 | * @param __rhs String. |
6311 | * @return True if @a __rhs.compare(@a __lhs) != 0. False otherwise. |
6312 | */ |
6313 | template<typename _CharT, typename _Traits, typename _Alloc> |
6314 | inline bool |
6315 | operator!=(const _CharT* __lhs, |
6316 | const basic_string<_CharT, _Traits, _Alloc>& __rhs) |
6317 | { return !(__lhs == __rhs); } |
6318 | |
6319 | /** |
6320 | * @brief Test difference of string and C string. |
6321 | * @param __lhs String. |
6322 | * @param __rhs C string. |
6323 | * @return True if @a __lhs.compare(@a __rhs) != 0. False otherwise. |
6324 | */ |
6325 | template<typename _CharT, typename _Traits, typename _Alloc> |
6326 | inline bool |
6327 | operator!=(const basic_string<_CharT, _Traits, _Alloc>& __lhs, |
6328 | const _CharT* __rhs) |
6329 | { return !(__lhs == __rhs); } |
6330 | |
6331 | // operator < |
6332 | /** |
6333 | * @brief Test if string precedes string. |
6334 | * @param __lhs First string. |
6335 | * @param __rhs Second string. |
6336 | * @return True if @a __lhs precedes @a __rhs. False otherwise. |
6337 | */ |
6338 | template<typename _CharT, typename _Traits, typename _Alloc> |
6339 | inline bool |
6340 | operator<(const basic_string<_CharT, _Traits, _Alloc>& __lhs, |
6341 | const basic_string<_CharT, _Traits, _Alloc>& __rhs) |
6342 | _GLIBCXX_NOEXCEPT |
6343 | { return __lhs.compare(__rhs) < 0; } |
6344 | |
6345 | /** |
6346 | * @brief Test if string precedes C string. |
6347 | * @param __lhs String. |
6348 | * @param __rhs C string. |
6349 | * @return True if @a __lhs precedes @a __rhs. False otherwise. |
6350 | */ |
6351 | template<typename _CharT, typename _Traits, typename _Alloc> |
6352 | inline bool |
6353 | operator<(const basic_string<_CharT, _Traits, _Alloc>& __lhs, |
6354 | const _CharT* __rhs) |
6355 | { return __lhs.compare(__rhs) < 0; } |
6356 | |
6357 | /** |
6358 | * @brief Test if C string precedes string. |
6359 | * @param __lhs C string. |
6360 | * @param __rhs String. |
6361 | * @return True if @a __lhs precedes @a __rhs. False otherwise. |
6362 | */ |
6363 | template<typename _CharT, typename _Traits, typename _Alloc> |
6364 | inline bool |
6365 | operator<(const _CharT* __lhs, |
6366 | const basic_string<_CharT, _Traits, _Alloc>& __rhs) |
6367 | { return __rhs.compare(__lhs) > 0; } |
6368 | |
6369 | // operator > |
6370 | /** |
6371 | * @brief Test if string follows string. |
6372 | * @param __lhs First string. |
6373 | * @param __rhs Second string. |
6374 | * @return True if @a __lhs follows @a __rhs. False otherwise. |
6375 | */ |
6376 | template<typename _CharT, typename _Traits, typename _Alloc> |
6377 | inline bool |
6378 | operator>(const basic_string<_CharT, _Traits, _Alloc>& __lhs, |
6379 | const basic_string<_CharT, _Traits, _Alloc>& __rhs) |
6380 | _GLIBCXX_NOEXCEPT |
6381 | { return __lhs.compare(__rhs) > 0; } |
6382 | |
6383 | /** |
6384 | * @brief Test if string follows C string. |
6385 | * @param __lhs String. |
6386 | * @param __rhs C string. |
6387 | * @return True if @a __lhs follows @a __rhs. False otherwise. |
6388 | */ |
6389 | template<typename _CharT, typename _Traits, typename _Alloc> |
6390 | inline bool |
6391 | operator>(const basic_string<_CharT, _Traits, _Alloc>& __lhs, |
6392 | const _CharT* __rhs) |
6393 | { return __lhs.compare(__rhs) > 0; } |
6394 | |
6395 | /** |
6396 | * @brief Test if C string follows string. |
6397 | * @param __lhs C string. |
6398 | * @param __rhs String. |
6399 | * @return True if @a __lhs follows @a __rhs. False otherwise. |
6400 | */ |
6401 | template<typename _CharT, typename _Traits, typename _Alloc> |
6402 | inline bool |
6403 | operator>(const _CharT* __lhs, |
6404 | const basic_string<_CharT, _Traits, _Alloc>& __rhs) |
6405 | { return __rhs.compare(__lhs) < 0; } |
6406 | |
6407 | // operator <= |
6408 | /** |
6409 | * @brief Test if string doesn't follow string. |
6410 | * @param __lhs First string. |
6411 | * @param __rhs Second string. |
6412 | * @return True if @a __lhs doesn't follow @a __rhs. False otherwise. |
6413 | */ |
6414 | template<typename _CharT, typename _Traits, typename _Alloc> |
6415 | inline bool |
6416 | operator<=(const basic_string<_CharT, _Traits, _Alloc>& __lhs, |
6417 | const basic_string<_CharT, _Traits, _Alloc>& __rhs) |
6418 | _GLIBCXX_NOEXCEPT |
6419 | { return __lhs.compare(__rhs) <= 0; } |
6420 | |
6421 | /** |
6422 | * @brief Test if string doesn't follow C string. |
6423 | * @param __lhs String. |
6424 | * @param __rhs C string. |
6425 | * @return True if @a __lhs doesn't follow @a __rhs. False otherwise. |
6426 | */ |
6427 | template<typename _CharT, typename _Traits, typename _Alloc> |
6428 | inline bool |
6429 | operator<=(const basic_string<_CharT, _Traits, _Alloc>& __lhs, |
6430 | const _CharT* __rhs) |
6431 | { return __lhs.compare(__rhs) <= 0; } |
6432 | |
6433 | /** |
6434 | * @brief Test if C string doesn't follow string. |
6435 | * @param __lhs C string. |
6436 | * @param __rhs String. |
6437 | * @return True if @a __lhs doesn't follow @a __rhs. False otherwise. |
6438 | */ |
6439 | template<typename _CharT, typename _Traits, typename _Alloc> |
6440 | inline bool |
6441 | operator<=(const _CharT* __lhs, |
6442 | const basic_string<_CharT, _Traits, _Alloc>& __rhs) |
6443 | { return __rhs.compare(__lhs) >= 0; } |
6444 | |
6445 | // operator >= |
6446 | /** |
6447 | * @brief Test if string doesn't precede string. |
6448 | * @param __lhs First string. |
6449 | * @param __rhs Second string. |
6450 | * @return True if @a __lhs doesn't precede @a __rhs. False otherwise. |
6451 | */ |
6452 | template<typename _CharT, typename _Traits, typename _Alloc> |
6453 | inline bool |
6454 | operator>=(const basic_string<_CharT, _Traits, _Alloc>& __lhs, |
6455 | const basic_string<_CharT, _Traits, _Alloc>& __rhs) |
6456 | _GLIBCXX_NOEXCEPT |
6457 | { return __lhs.compare(__rhs) >= 0; } |
6458 | |
6459 | /** |
6460 | * @brief Test if string doesn't precede C string. |
6461 | * @param __lhs String. |
6462 | * @param __rhs C string. |
6463 | * @return True if @a __lhs doesn't precede @a __rhs. False otherwise. |
6464 | */ |
6465 | template<typename _CharT, typename _Traits, typename _Alloc> |
6466 | inline bool |
6467 | operator>=(const basic_string<_CharT, _Traits, _Alloc>& __lhs, |
6468 | const _CharT* __rhs) |
6469 | { return __lhs.compare(__rhs) >= 0; } |
6470 | |
6471 | /** |
6472 | * @brief Test if C string doesn't precede string. |
6473 | * @param __lhs C string. |
6474 | * @param __rhs String. |
6475 | * @return True if @a __lhs doesn't precede @a __rhs. False otherwise. |
6476 | */ |
6477 | template<typename _CharT, typename _Traits, typename _Alloc> |
6478 | inline bool |
6479 | operator>=(const _CharT* __lhs, |
6480 | const basic_string<_CharT, _Traits, _Alloc>& __rhs) |
6481 | { return __rhs.compare(__lhs) <= 0; } |
6482 | #endif // three-way comparison |
6483 | |
6484 | /** |
6485 | * @brief Swap contents of two strings. |
6486 | * @param __lhs First string. |
6487 | * @param __rhs Second string. |
6488 | * |
6489 | * Exchanges the contents of @a __lhs and @a __rhs in constant time. |
6490 | */ |
6491 | template<typename _CharT, typename _Traits, typename _Alloc> |
6492 | inline void |
6493 | swap(basic_string<_CharT, _Traits, _Alloc>& __lhs, |
6494 | basic_string<_CharT, _Traits, _Alloc>& __rhs) |
6495 | _GLIBCXX_NOEXCEPT_IF(noexcept(__lhs.swap(__rhs))) |
6496 | { __lhs.swap(__rhs); } |
6497 | |
6498 | |
6499 | /** |
6500 | * @brief Read stream into a string. |
6501 | * @param __is Input stream. |
6502 | * @param __str Buffer to store into. |
6503 | * @return Reference to the input stream. |
6504 | * |
6505 | * Stores characters from @a __is into @a __str until whitespace is |
6506 | * found, the end of the stream is encountered, or str.max_size() |
6507 | * is reached. If is.width() is non-zero, that is the limit on the |
6508 | * number of characters stored into @a __str. Any previous |
6509 | * contents of @a __str are erased. |
6510 | */ |
6511 | template<typename _CharT, typename _Traits, typename _Alloc> |
6512 | basic_istream<_CharT, _Traits>& |
6513 | operator>>(basic_istream<_CharT, _Traits>& __is, |
6514 | basic_string<_CharT, _Traits, _Alloc>& __str); |
6515 | |
6516 | template<> |
6517 | basic_istream<char>& |
6518 | operator>>(basic_istream<char>& __is, basic_string<char>& __str); |
6519 | |
6520 | /** |
6521 | * @brief Write string to a stream. |
6522 | * @param __os Output stream. |
6523 | * @param __str String to write out. |
6524 | * @return Reference to the output stream. |
6525 | * |
6526 | * Output characters of @a __str into os following the same rules as for |
6527 | * writing a C string. |
6528 | */ |
6529 | template<typename _CharT, typename _Traits, typename _Alloc> |
6530 | inline basic_ostream<_CharT, _Traits>& |
6531 | operator<<(basic_ostream<_CharT, _Traits>& __os, |
6532 | const basic_string<_CharT, _Traits, _Alloc>& __str) |
6533 | { |
6534 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
6535 | // 586. string inserter not a formatted function |
6536 | return __ostream_insert(__os, __str.data(), __str.size()); |
6537 | } |
6538 | |
6539 | /** |
6540 | * @brief Read a line from stream into a string. |
6541 | * @param __is Input stream. |
6542 | * @param __str Buffer to store into. |
6543 | * @param __delim Character marking end of line. |
6544 | * @return Reference to the input stream. |
6545 | * |
6546 | * Stores characters from @a __is into @a __str until @a __delim is |
6547 | * found, the end of the stream is encountered, or str.max_size() |
6548 | * is reached. Any previous contents of @a __str are erased. If |
6549 | * @a __delim is encountered, it is extracted but not stored into |
6550 | * @a __str. |
6551 | */ |
6552 | template<typename _CharT, typename _Traits, typename _Alloc> |
6553 | basic_istream<_CharT, _Traits>& |
6554 | getline(basic_istream<_CharT, _Traits>& __is, |
6555 | basic_string<_CharT, _Traits, _Alloc>& __str, _CharT __delim); |
6556 | |
6557 | /** |
6558 | * @brief Read a line from stream into a string. |
6559 | * @param __is Input stream. |
6560 | * @param __str Buffer to store into. |
6561 | * @return Reference to the input stream. |
6562 | * |
6563 | * Stores characters from is into @a __str until '\n' is |
6564 | * found, the end of the stream is encountered, or str.max_size() |
6565 | * is reached. Any previous contents of @a __str are erased. If |
6566 | * end of line is encountered, it is extracted but not stored into |
6567 | * @a __str. |
6568 | */ |
6569 | template<typename _CharT, typename _Traits, typename _Alloc> |
6570 | inline basic_istream<_CharT, _Traits>& |
6571 | getline(basic_istream<_CharT, _Traits>& __is, |
6572 | basic_string<_CharT, _Traits, _Alloc>& __str) |
6573 | { return std::getline(__is, __str, __is.widen('\n')); } |
6574 | |
6575 | #if __cplusplus >= 201103L |
6576 | /// Read a line from an rvalue stream into a string. |
6577 | template<typename _CharT, typename _Traits, typename _Alloc> |
6578 | inline basic_istream<_CharT, _Traits>& |
6579 | getline(basic_istream<_CharT, _Traits>&& __is, |
6580 | basic_string<_CharT, _Traits, _Alloc>& __str, _CharT __delim) |
6581 | { return std::getline(__is, __str, __delim); } |
6582 | |
6583 | /// Read a line from an rvalue stream into a string. |
6584 | template<typename _CharT, typename _Traits, typename _Alloc> |
6585 | inline basic_istream<_CharT, _Traits>& |
6586 | getline(basic_istream<_CharT, _Traits>&& __is, |
6587 | basic_string<_CharT, _Traits, _Alloc>& __str) |
6588 | { return std::getline(__is, __str); } |
6589 | #endif |
6590 | |
6591 | template<> |
6592 | basic_istream<char>& |
6593 | getline(basic_istream<char>& __in, basic_string<char>& __str, |
6594 | char __delim); |
6595 | |
6596 | #ifdef _GLIBCXX_USE_WCHAR_T |
6597 | template<> |
6598 | basic_istream<wchar_t>& |
6599 | getline(basic_istream<wchar_t>& __in, basic_string<wchar_t>& __str, |
6600 | wchar_t __delim); |
6601 | #endif |
6602 | |
6603 | _GLIBCXX_END_NAMESPACE_VERSION |
6604 | } // namespace |
6605 | |
6606 | #if __cplusplus >= 201103L |
6607 | |
6608 | #include <ext/string_conversions.h> |
6609 | #include <bits/charconv.h> |
6610 | |
6611 | namespace std _GLIBCXX_VISIBILITY(default) |
6612 | { |
6613 | _GLIBCXX_BEGIN_NAMESPACE_VERSION |
6614 | _GLIBCXX_BEGIN_NAMESPACE_CXX11 |
6615 | |
6616 | #if _GLIBCXX_USE_C99_STDLIB |
6617 | // 21.4 Numeric Conversions [string.conversions]. |
6618 | inline int |
6619 | stoi(const string& __str, size_t* __idx = 0, int __base = 10) |
6620 | { return __gnu_cxx::__stoa<long, int>(convf: &std::strtol, name: "stoi" , str: __str.c_str(), |
6621 | __idx, __base); } |
6622 | |
6623 | inline long |
6624 | stol(const string& __str, size_t* __idx = 0, int __base = 10) |
6625 | { return __gnu_cxx::__stoa(convf: &std::strtol, name: "stol" , str: __str.c_str(), |
6626 | __idx, __base); } |
6627 | |
6628 | inline unsigned long |
6629 | stoul(const string& __str, size_t* __idx = 0, int __base = 10) |
6630 | { return __gnu_cxx::__stoa(convf: &std::strtoul, |
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