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1d487aca | 1 | // Components for manipulating sequences of characters -*- C++ -*- |
2 | ||
fbd26352 | 3 | // Copyright (C) 1997-2019 Free Software Foundation, Inc. |
1d487aca | 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 | |
6bc9506f | 8 | // Free Software Foundation; either version 3, or (at your option) |
1d487aca | 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 | ||
6bc9506f | 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/>. | |
1d487aca | 24 | |
5846aeac | 25 | /** @file bits/basic_string.h |
7a472ef1 | 26 | * This is an internal header file, included by other library headers. |
5846aeac | 27 | * Do not attempt to use it directly. @headername{string} |
7a472ef1 | 28 | */ |
29 | ||
944beac5 | 30 | // |
31 | // ISO C++ 14882: 21 Strings library | |
32 | // | |
33 | ||
5a64d8cf | 34 | #ifndef _BASIC_STRING_H |
35 | #define _BASIC_STRING_H 1 | |
1d487aca | 36 | |
cd319190 | 37 | #pragma GCC system_header |
38 | ||
72de368c | 39 | #include <ext/atomicity.h> |
63f54259 | 40 | #include <ext/alloc_traits.h> |
d570f2e9 | 41 | #include <debug/debug.h> |
ffff0e95 | 42 | |
0c8766b1 | 43 | #if __cplusplus >= 201103L |
b23fdac1 | 44 | #include <initializer_list> |
fbb4cdfc | 45 | #endif |
1d487aca | 46 | |
98185b9f | 47 | #if __cplusplus >= 201703L |
76d7f2c2 | 48 | # include <string_view> |
49 | #endif | |
50 | ||
51 | ||
2948dd21 | 52 | namespace std _GLIBCXX_VISIBILITY(default) |
53 | { | |
54 | _GLIBCXX_BEGIN_NAMESPACE_VERSION | |
1069247d | 55 | |
63f54259 | 56 | #if _GLIBCXX_USE_CXX11_ABI |
57 | _GLIBCXX_BEGIN_NAMESPACE_CXX11 | |
58 | /** | |
59 | * @class basic_string basic_string.h <string> | |
60 | * @brief Managing sequences of characters and character-like objects. | |
61 | * | |
62 | * @ingroup strings | |
63 | * @ingroup sequences | |
64 | * | |
65 | * @tparam _CharT Type of character | |
66 | * @tparam _Traits Traits for character type, defaults to | |
67 | * char_traits<_CharT>. | |
68 | * @tparam _Alloc Allocator type, defaults to allocator<_CharT>. | |
69 | * | |
70 | * Meets the requirements of a <a href="tables.html#65">container</a>, a | |
71 | * <a href="tables.html#66">reversible container</a>, and a | |
72 | * <a href="tables.html#67">sequence</a>. Of the | |
73 | * <a href="tables.html#68">optional sequence requirements</a>, only | |
74 | * @c push_back, @c at, and @c %array access are supported. | |
75 | */ | |
76 | template<typename _CharT, typename _Traits, typename _Alloc> | |
77 | class basic_string | |
78 | { | |
79 | typedef typename __gnu_cxx::__alloc_traits<_Alloc>::template | |
80 | rebind<_CharT>::other _Char_alloc_type; | |
81 | typedef __gnu_cxx::__alloc_traits<_Char_alloc_type> _Alloc_traits; | |
82 | ||
83 | // Types: | |
84 | public: | |
85 | typedef _Traits traits_type; | |
86 | typedef typename _Traits::char_type value_type; | |
87 | typedef _Char_alloc_type allocator_type; | |
88 | typedef typename _Alloc_traits::size_type size_type; | |
89 | typedef typename _Alloc_traits::difference_type difference_type; | |
90 | typedef typename _Alloc_traits::reference reference; | |
91 | typedef typename _Alloc_traits::const_reference const_reference; | |
92 | typedef typename _Alloc_traits::pointer pointer; | |
93 | typedef typename _Alloc_traits::const_pointer const_pointer; | |
94 | typedef __gnu_cxx::__normal_iterator<pointer, basic_string> iterator; | |
95 | typedef __gnu_cxx::__normal_iterator<const_pointer, basic_string> | |
96 | const_iterator; | |
97 | typedef std::reverse_iterator<const_iterator> const_reverse_iterator; | |
98 | typedef std::reverse_iterator<iterator> reverse_iterator; | |
99 | ||
100 | /// Value returned by various member functions when they fail. | |
101 | static const size_type npos = static_cast<size_type>(-1); | |
102 | ||
431a9dda | 103 | protected: |
63f54259 | 104 | // type used for positions in insert, erase etc. |
105 | #if __cplusplus < 201103L | |
106 | typedef iterator __const_iterator; | |
107 | #else | |
108 | typedef const_iterator __const_iterator; | |
109 | #endif | |
110 | ||
431a9dda | 111 | private: |
98185b9f | 112 | #if __cplusplus >= 201703L |
76d7f2c2 | 113 | // A helper type for avoiding boiler-plate. |
114 | typedef basic_string_view<_CharT, _Traits> __sv_type; | |
805aeef7 | 115 | |
116 | template<typename _Tp, typename _Res> | |
117 | using _If_sv = enable_if_t< | |
118 | __and_<is_convertible<const _Tp&, __sv_type>, | |
df2f15bb | 119 | __not_<is_convertible<const _Tp*, const basic_string*>>, |
805aeef7 | 120 | __not_<is_convertible<const _Tp&, const _CharT*>>>::value, |
121 | _Res>; | |
7c78f2e6 | 122 | |
123 | // Allows an implicit conversion to __sv_type. | |
124 | static __sv_type | |
125 | _S_to_string_view(__sv_type __svt) noexcept | |
126 | { return __svt; } | |
127 | ||
128 | // Wraps a string_view by explicit conversion and thus | |
129 | // allows to add an internal constructor that does not | |
130 | // participate in overload resolution when a string_view | |
131 | // is provided. | |
132 | struct __sv_wrapper | |
133 | { | |
134 | explicit __sv_wrapper(__sv_type __sv) noexcept : _M_sv(__sv) { } | |
135 | __sv_type _M_sv; | |
136 | }; | |
98185b9f | 137 | |
138 | /** | |
139 | * @brief Only internally used: Construct string from a string view | |
140 | * wrapper. | |
141 | * @param __svw string view wrapper. | |
142 | * @param __a Allocator to use. | |
143 | */ | |
144 | explicit | |
145 | basic_string(__sv_wrapper __svw, const _Alloc& __a) | |
146 | : basic_string(__svw._M_sv.data(), __svw._M_sv.size(), __a) { } | |
76d7f2c2 | 147 | #endif |
148 | ||
63f54259 | 149 | // Use empty-base optimization: http://www.cantrip.org/emptyopt.html |
150 | struct _Alloc_hider : allocator_type // TODO check __is_final | |
151 | { | |
8ac69626 | 152 | #if __cplusplus < 201103L |
63f54259 | 153 | _Alloc_hider(pointer __dat, const _Alloc& __a = _Alloc()) |
154 | : allocator_type(__a), _M_p(__dat) { } | |
8ac69626 | 155 | #else |
156 | _Alloc_hider(pointer __dat, const _Alloc& __a) | |
157 | : allocator_type(__a), _M_p(__dat) { } | |
158 | ||
159 | _Alloc_hider(pointer __dat, _Alloc&& __a = _Alloc()) | |
160 | : allocator_type(std::move(__a)), _M_p(__dat) { } | |
161 | #endif | |
63f54259 | 162 | |
163 | pointer _M_p; // The actual data. | |
164 | }; | |
165 | ||
166 | _Alloc_hider _M_dataplus; | |
167 | size_type _M_string_length; | |
168 | ||
2cf1651a | 169 | enum { _S_local_capacity = 15 / sizeof(_CharT) }; |
63f54259 | 170 | |
171 | union | |
172 | { | |
173 | _CharT _M_local_buf[_S_local_capacity + 1]; | |
174 | size_type _M_allocated_capacity; | |
175 | }; | |
176 | ||
177 | void | |
178 | _M_data(pointer __p) | |
179 | { _M_dataplus._M_p = __p; } | |
180 | ||
181 | void | |
182 | _M_length(size_type __length) | |
183 | { _M_string_length = __length; } | |
184 | ||
185 | pointer | |
186 | _M_data() const | |
187 | { return _M_dataplus._M_p; } | |
188 | ||
189 | pointer | |
190 | _M_local_data() | |
191 | { | |
192 | #if __cplusplus >= 201103L | |
193 | return std::pointer_traits<pointer>::pointer_to(*_M_local_buf); | |
194 | #else | |
195 | return pointer(_M_local_buf); | |
196 | #endif | |
197 | } | |
198 | ||
199 | const_pointer | |
200 | _M_local_data() const | |
201 | { | |
202 | #if __cplusplus >= 201103L | |
203 | return std::pointer_traits<const_pointer>::pointer_to(*_M_local_buf); | |
204 | #else | |
205 | return const_pointer(_M_local_buf); | |
206 | #endif | |
207 | } | |
208 | ||
209 | void | |
210 | _M_capacity(size_type __capacity) | |
211 | { _M_allocated_capacity = __capacity; } | |
212 | ||
213 | void | |
214 | _M_set_length(size_type __n) | |
215 | { | |
216 | _M_length(__n); | |
217 | traits_type::assign(_M_data()[__n], _CharT()); | |
218 | } | |
219 | ||
220 | bool | |
221 | _M_is_local() const | |
222 | { return _M_data() == _M_local_data(); } | |
223 | ||
224 | // Create & Destroy | |
225 | pointer | |
226 | _M_create(size_type&, size_type); | |
227 | ||
228 | void | |
229 | _M_dispose() | |
230 | { | |
231 | if (!_M_is_local()) | |
232 | _M_destroy(_M_allocated_capacity); | |
233 | } | |
234 | ||
235 | void | |
236 | _M_destroy(size_type __size) throw() | |
237 | { _Alloc_traits::deallocate(_M_get_allocator(), _M_data(), __size + 1); } | |
238 | ||
239 | // _M_construct_aux is used to implement the 21.3.1 para 15 which | |
240 | // requires special behaviour if _InIterator is an integral type | |
241 | template<typename _InIterator> | |
242 | void | |
243 | _M_construct_aux(_InIterator __beg, _InIterator __end, | |
244 | std::__false_type) | |
245 | { | |
246 | typedef typename iterator_traits<_InIterator>::iterator_category _Tag; | |
247 | _M_construct(__beg, __end, _Tag()); | |
248 | } | |
249 | ||
250 | // _GLIBCXX_RESOLVE_LIB_DEFECTS | |
251 | // 438. Ambiguity in the "do the right thing" clause | |
252 | template<typename _Integer> | |
253 | void | |
254 | _M_construct_aux(_Integer __beg, _Integer __end, std::__true_type) | |
255 | { _M_construct_aux_2(static_cast<size_type>(__beg), __end); } | |
256 | ||
257 | void | |
258 | _M_construct_aux_2(size_type __req, _CharT __c) | |
259 | { _M_construct(__req, __c); } | |
260 | ||
261 | template<typename _InIterator> | |
262 | void | |
263 | _M_construct(_InIterator __beg, _InIterator __end) | |
264 | { | |
265 | typedef typename std::__is_integer<_InIterator>::__type _Integral; | |
266 | _M_construct_aux(__beg, __end, _Integral()); | |
267 | } | |
268 | ||
269 | // For Input Iterators, used in istreambuf_iterators, etc. | |
270 | template<typename _InIterator> | |
271 | void | |
272 | _M_construct(_InIterator __beg, _InIterator __end, | |
273 | std::input_iterator_tag); | |
274 | ||
275 | // For forward_iterators up to random_access_iterators, used for | |
276 | // string::iterator, _CharT*, etc. | |
277 | template<typename _FwdIterator> | |
278 | void | |
279 | _M_construct(_FwdIterator __beg, _FwdIterator __end, | |
280 | std::forward_iterator_tag); | |
281 | ||
282 | void | |
283 | _M_construct(size_type __req, _CharT __c); | |
284 | ||
285 | allocator_type& | |
286 | _M_get_allocator() | |
287 | { return _M_dataplus; } | |
288 | ||
289 | const allocator_type& | |
290 | _M_get_allocator() const | |
291 | { return _M_dataplus; } | |
292 | ||
293 | private: | |
294 | ||
295 | #ifdef _GLIBCXX_DISAMBIGUATE_REPLACE_INST | |
296 | // The explicit instantiations in misc-inst.cc require this due to | |
297 | // https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64063 | |
298 | template<typename _Tp, bool _Requires = | |
299 | !__are_same<_Tp, _CharT*>::__value | |
300 | && !__are_same<_Tp, const _CharT*>::__value | |
301 | && !__are_same<_Tp, iterator>::__value | |
302 | && !__are_same<_Tp, const_iterator>::__value> | |
303 | struct __enable_if_not_native_iterator | |
304 | { typedef basic_string& __type; }; | |
305 | template<typename _Tp> | |
306 | struct __enable_if_not_native_iterator<_Tp, false> { }; | |
307 | #endif | |
308 | ||
309 | size_type | |
310 | _M_check(size_type __pos, const char* __s) const | |
311 | { | |
312 | if (__pos > this->size()) | |
313 | __throw_out_of_range_fmt(__N("%s: __pos (which is %zu) > " | |
314 | "this->size() (which is %zu)"), | |
315 | __s, __pos, this->size()); | |
316 | return __pos; | |
317 | } | |
318 | ||
319 | void | |
320 | _M_check_length(size_type __n1, size_type __n2, const char* __s) const | |
321 | { | |
322 | if (this->max_size() - (this->size() - __n1) < __n2) | |
323 | __throw_length_error(__N(__s)); | |
324 | } | |
325 | ||
326 | ||
327 | // NB: _M_limit doesn't check for a bad __pos value. | |
328 | size_type | |
329 | _M_limit(size_type __pos, size_type __off) const _GLIBCXX_NOEXCEPT | |
330 | { | |
331 | const bool __testoff = __off < this->size() - __pos; | |
332 | return __testoff ? __off : this->size() - __pos; | |
333 | } | |
334 | ||
335 | // True if _Rep and source do not overlap. | |
336 | bool | |
337 | _M_disjunct(const _CharT* __s) const _GLIBCXX_NOEXCEPT | |
338 | { | |
e4416257 | 339 | return (less<const _CharT*>()(__s, _M_data()) |
340 | || less<const _CharT*>()(_M_data() + this->size(), __s)); | |
63f54259 | 341 | } |
342 | ||
343 | // When __n = 1 way faster than the general multichar | |
344 | // traits_type::copy/move/assign. | |
345 | static void | |
346 | _S_copy(_CharT* __d, const _CharT* __s, size_type __n) | |
347 | { | |
348 | if (__n == 1) | |
349 | traits_type::assign(*__d, *__s); | |
350 | else | |
351 | traits_type::copy(__d, __s, __n); | |
352 | } | |
353 | ||
354 | static void | |
355 | _S_move(_CharT* __d, const _CharT* __s, size_type __n) | |
356 | { | |
357 | if (__n == 1) | |
358 | traits_type::assign(*__d, *__s); | |
359 | else | |
360 | traits_type::move(__d, __s, __n); | |
361 | } | |
362 | ||
363 | static void | |
364 | _S_assign(_CharT* __d, size_type __n, _CharT __c) | |
365 | { | |
366 | if (__n == 1) | |
367 | traits_type::assign(*__d, __c); | |
368 | else | |
369 | traits_type::assign(__d, __n, __c); | |
370 | } | |
371 | ||
372 | // _S_copy_chars is a separate template to permit specialization | |
373 | // to optimize for the common case of pointers as iterators. | |
374 | template<class _Iterator> | |
375 | static void | |
376 | _S_copy_chars(_CharT* __p, _Iterator __k1, _Iterator __k2) | |
63f54259 | 377 | { |
0ba86e4e | 378 | for (; __k1 != __k2; ++__k1, (void)++__p) |
63f54259 | 379 | traits_type::assign(*__p, *__k1); // These types are off. |
380 | } | |
381 | ||
382 | static void | |
383 | _S_copy_chars(_CharT* __p, iterator __k1, iterator __k2) _GLIBCXX_NOEXCEPT | |
384 | { _S_copy_chars(__p, __k1.base(), __k2.base()); } | |
385 | ||
386 | static void | |
387 | _S_copy_chars(_CharT* __p, const_iterator __k1, const_iterator __k2) | |
388 | _GLIBCXX_NOEXCEPT | |
389 | { _S_copy_chars(__p, __k1.base(), __k2.base()); } | |
390 | ||
391 | static void | |
392 | _S_copy_chars(_CharT* __p, _CharT* __k1, _CharT* __k2) _GLIBCXX_NOEXCEPT | |
393 | { _S_copy(__p, __k1, __k2 - __k1); } | |
394 | ||
395 | static void | |
396 | _S_copy_chars(_CharT* __p, const _CharT* __k1, const _CharT* __k2) | |
397 | _GLIBCXX_NOEXCEPT | |
398 | { _S_copy(__p, __k1, __k2 - __k1); } | |
399 | ||
400 | static int | |
401 | _S_compare(size_type __n1, size_type __n2) _GLIBCXX_NOEXCEPT | |
402 | { | |
403 | const difference_type __d = difference_type(__n1 - __n2); | |
404 | ||
405 | if (__d > __gnu_cxx::__numeric_traits<int>::__max) | |
406 | return __gnu_cxx::__numeric_traits<int>::__max; | |
407 | else if (__d < __gnu_cxx::__numeric_traits<int>::__min) | |
408 | return __gnu_cxx::__numeric_traits<int>::__min; | |
409 | else | |
410 | return int(__d); | |
411 | } | |
412 | ||
413 | void | |
95249024 | 414 | _M_assign(const basic_string&); |
63f54259 | 415 | |
416 | void | |
417 | _M_mutate(size_type __pos, size_type __len1, const _CharT* __s, | |
418 | size_type __len2); | |
419 | ||
420 | void | |
421 | _M_erase(size_type __pos, size_type __n); | |
422 | ||
423 | public: | |
424 | // Construct/copy/destroy: | |
425 | // NB: We overload ctors in some cases instead of using default | |
426 | // arguments, per 17.4.4.4 para. 2 item 2. | |
427 | ||
428 | /** | |
429 | * @brief Default constructor creates an empty string. | |
430 | */ | |
c0b57d31 | 431 | basic_string() |
b7aaabf0 | 432 | _GLIBCXX_NOEXCEPT_IF(is_nothrow_default_constructible<_Alloc>::value) |
63f54259 | 433 | : _M_dataplus(_M_local_data()) |
434 | { _M_set_length(0); } | |
435 | ||
436 | /** | |
437 | * @brief Construct an empty string using allocator @a a. | |
438 | */ | |
439 | explicit | |
b7aaabf0 | 440 | basic_string(const _Alloc& __a) _GLIBCXX_NOEXCEPT |
63f54259 | 441 | : _M_dataplus(_M_local_data(), __a) |
442 | { _M_set_length(0); } | |
443 | ||
444 | /** | |
445 | * @brief Construct string with copy of value of @a __str. | |
446 | * @param __str Source string. | |
447 | */ | |
448 | basic_string(const basic_string& __str) | |
b7aaabf0 | 449 | : _M_dataplus(_M_local_data(), |
450 | _Alloc_traits::_S_select_on_copy(__str._M_get_allocator())) | |
63f54259 | 451 | { _M_construct(__str._M_data(), __str._M_data() + __str.length()); } |
452 | ||
409191e4 | 453 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
454 | // 2583. no way to supply an allocator for basic_string(str, pos) | |
63f54259 | 455 | /** |
456 | * @brief Construct string as copy of a substring. | |
457 | * @param __str Source string. | |
458 | * @param __pos Index of first character to copy from. | |
409191e4 | 459 | * @param __a Allocator to use. |
63f54259 | 460 | */ |
63f54259 | 461 | basic_string(const basic_string& __str, size_type __pos, |
409191e4 | 462 | const _Alloc& __a = _Alloc()) |
463 | : _M_dataplus(_M_local_data(), __a) | |
464 | { | |
465 | const _CharT* __start = __str._M_data() | |
466 | + __str._M_check(__pos, "basic_string::basic_string"); | |
467 | _M_construct(__start, __start + __str._M_limit(__pos, npos)); | |
468 | } | |
469 | ||
470 | /** | |
471 | * @brief Construct string as copy of a substring. | |
472 | * @param __str Source string. | |
473 | * @param __pos Index of first character to copy from. | |
474 | * @param __n Number of characters to copy. | |
475 | */ | |
476 | basic_string(const basic_string& __str, size_type __pos, | |
477 | size_type __n) | |
63f54259 | 478 | : _M_dataplus(_M_local_data()) |
479 | { | |
e4416257 | 480 | const _CharT* __start = __str._M_data() |
63f54259 | 481 | + __str._M_check(__pos, "basic_string::basic_string"); |
482 | _M_construct(__start, __start + __str._M_limit(__pos, __n)); | |
483 | } | |
484 | ||
485 | /** | |
486 | * @brief Construct string as copy of a substring. | |
487 | * @param __str Source string. | |
488 | * @param __pos Index of first character to copy from. | |
409191e4 | 489 | * @param __n Number of characters to copy. |
63f54259 | 490 | * @param __a Allocator to use. |
491 | */ | |
492 | basic_string(const basic_string& __str, size_type __pos, | |
493 | size_type __n, const _Alloc& __a) | |
494 | : _M_dataplus(_M_local_data(), __a) | |
495 | { | |
e4416257 | 496 | const _CharT* __start |
497 | = __str._M_data() + __str._M_check(__pos, "string::string"); | |
63f54259 | 498 | _M_construct(__start, __start + __str._M_limit(__pos, __n)); |
499 | } | |
500 | ||
501 | /** | |
502 | * @brief Construct string initialized by a character %array. | |
503 | * @param __s Source character %array. | |
504 | * @param __n Number of characters to copy. | |
505 | * @param __a Allocator to use (default is default allocator). | |
506 | * | |
507 | * NB: @a __s must have at least @a __n characters, '\\0' | |
508 | * has no special meaning. | |
509 | */ | |
510 | basic_string(const _CharT* __s, size_type __n, | |
511 | const _Alloc& __a = _Alloc()) | |
512 | : _M_dataplus(_M_local_data(), __a) | |
513 | { _M_construct(__s, __s + __n); } | |
514 | ||
515 | /** | |
516 | * @brief Construct string as copy of a C string. | |
517 | * @param __s Source C string. | |
518 | * @param __a Allocator to use (default is default allocator). | |
519 | */ | |
95ca8aca | 520 | #if __cpp_deduction_guides && ! defined _GLIBCXX_DEFINING_STRING_INSTANTIATIONS |
521 | // _GLIBCXX_RESOLVE_LIB_DEFECTS | |
522 | // 3076. basic_string CTAD ambiguity | |
523 | template<typename = _RequireAllocator<_Alloc>> | |
524 | #endif | |
63f54259 | 525 | basic_string(const _CharT* __s, const _Alloc& __a = _Alloc()) |
526 | : _M_dataplus(_M_local_data(), __a) | |
527 | { _M_construct(__s, __s ? __s + traits_type::length(__s) : __s+npos); } | |
528 | ||
529 | /** | |
530 | * @brief Construct string as multiple characters. | |
531 | * @param __n Number of characters. | |
532 | * @param __c Character to use. | |
533 | * @param __a Allocator to use (default is default allocator). | |
534 | */ | |
95ca8aca | 535 | #if __cpp_deduction_guides && ! defined _GLIBCXX_DEFINING_STRING_INSTANTIATIONS |
536 | // _GLIBCXX_RESOLVE_LIB_DEFECTS | |
537 | // 3076. basic_string CTAD ambiguity | |
538 | template<typename = _RequireAllocator<_Alloc>> | |
539 | #endif | |
63f54259 | 540 | basic_string(size_type __n, _CharT __c, const _Alloc& __a = _Alloc()) |
541 | : _M_dataplus(_M_local_data(), __a) | |
542 | { _M_construct(__n, __c); } | |
543 | ||
544 | #if __cplusplus >= 201103L | |
545 | /** | |
546 | * @brief Move construct string. | |
547 | * @param __str Source string. | |
548 | * | |
549 | * The newly-created string contains the exact contents of @a __str. | |
550 | * @a __str is a valid, but unspecified string. | |
551 | **/ | |
552 | basic_string(basic_string&& __str) noexcept | |
553 | : _M_dataplus(_M_local_data(), std::move(__str._M_get_allocator())) | |
554 | { | |
555 | if (__str._M_is_local()) | |
556 | { | |
dfc7d665 | 557 | traits_type::copy(_M_local_buf, __str._M_local_buf, |
558 | _S_local_capacity + 1); | |
63f54259 | 559 | } |
560 | else | |
561 | { | |
562 | _M_data(__str._M_data()); | |
563 | _M_capacity(__str._M_allocated_capacity); | |
564 | } | |
565 | ||
566 | // Must use _M_length() here not _M_set_length() because | |
567 | // basic_stringbuf relies on writing into unallocated capacity so | |
568 | // we mess up the contents if we put a '\0' in the string. | |
569 | _M_length(__str.length()); | |
570 | __str._M_data(__str._M_local_data()); | |
571 | __str._M_set_length(0); | |
572 | } | |
573 | ||
574 | /** | |
575 | * @brief Construct string from an initializer %list. | |
576 | * @param __l std::initializer_list of characters. | |
577 | * @param __a Allocator to use (default is default allocator). | |
578 | */ | |
579 | basic_string(initializer_list<_CharT> __l, const _Alloc& __a = _Alloc()) | |
580 | : _M_dataplus(_M_local_data(), __a) | |
581 | { _M_construct(__l.begin(), __l.end()); } | |
582 | ||
583 | basic_string(const basic_string& __str, const _Alloc& __a) | |
584 | : _M_dataplus(_M_local_data(), __a) | |
585 | { _M_construct(__str.begin(), __str.end()); } | |
586 | ||
587 | basic_string(basic_string&& __str, const _Alloc& __a) | |
b7aaabf0 | 588 | noexcept(_Alloc_traits::_S_always_equal()) |
63f54259 | 589 | : _M_dataplus(_M_local_data(), __a) |
590 | { | |
b7aaabf0 | 591 | if (__str._M_is_local()) |
592 | { | |
593 | traits_type::copy(_M_local_buf, __str._M_local_buf, | |
594 | _S_local_capacity + 1); | |
595 | _M_length(__str.length()); | |
596 | __str._M_set_length(0); | |
597 | } | |
598 | else if (_Alloc_traits::_S_always_equal() | |
599 | || __str.get_allocator() == __a) | |
600 | { | |
601 | _M_data(__str._M_data()); | |
602 | _M_length(__str.length()); | |
603 | _M_capacity(__str._M_allocated_capacity); | |
604 | __str._M_data(__str._M_local_buf); | |
605 | __str._M_set_length(0); | |
606 | } | |
63f54259 | 607 | else |
608 | _M_construct(__str.begin(), __str.end()); | |
609 | } | |
610 | ||
611 | #endif // C++11 | |
612 | ||
613 | /** | |
614 | * @brief Construct string as copy of a range. | |
615 | * @param __beg Start of range. | |
616 | * @param __end End of range. | |
617 | * @param __a Allocator to use (default is default allocator). | |
618 | */ | |
619 | #if __cplusplus >= 201103L | |
620 | template<typename _InputIterator, | |
621 | typename = std::_RequireInputIter<_InputIterator>> | |
622 | #else | |
623 | template<typename _InputIterator> | |
624 | #endif | |
625 | basic_string(_InputIterator __beg, _InputIterator __end, | |
626 | const _Alloc& __a = _Alloc()) | |
627 | : _M_dataplus(_M_local_data(), __a) | |
628 | { _M_construct(__beg, __end); } | |
629 | ||
98185b9f | 630 | #if __cplusplus >= 201703L |
0d835b13 | 631 | /** |
632 | * @brief Construct string from a substring of a string_view. | |
7c78f2e6 | 633 | * @param __t Source object convertible to string view. |
0d835b13 | 634 | * @param __pos The index of the first character to copy from __t. |
635 | * @param __n The number of characters to copy from __t. | |
636 | * @param __a Allocator to use. | |
637 | */ | |
92b06c89 | 638 | template<typename _Tp, typename = _If_sv<_Tp, void>> |
0d835b13 | 639 | basic_string(const _Tp& __t, size_type __pos, size_type __n, |
640 | const _Alloc& __a = _Alloc()) | |
7c78f2e6 | 641 | : basic_string(_S_to_string_view(__t).substr(__pos, __n), __a) { } |
0d835b13 | 642 | |
76d7f2c2 | 643 | /** |
644 | * @brief Construct string from a string_view. | |
7c78f2e6 | 645 | * @param __t Source object convertible to string view. |
76d7f2c2 | 646 | * @param __a Allocator to use (default is default allocator). |
647 | */ | |
7c78f2e6 | 648 | template<typename _Tp, typename = _If_sv<_Tp, void>> |
649 | explicit | |
650 | basic_string(const _Tp& __t, const _Alloc& __a = _Alloc()) | |
651 | : basic_string(__sv_wrapper(_S_to_string_view(__t)), __a) { } | |
76d7f2c2 | 652 | #endif // C++17 |
653 | ||
63f54259 | 654 | /** |
655 | * @brief Destroy the string instance. | |
656 | */ | |
657 | ~basic_string() | |
658 | { _M_dispose(); } | |
659 | ||
660 | /** | |
661 | * @brief Assign the value of @a str to this string. | |
662 | * @param __str Source string. | |
663 | */ | |
664 | basic_string& | |
665 | operator=(const basic_string& __str) | |
b7aaabf0 | 666 | { |
667 | #if __cplusplus >= 201103L | |
ea9285db | 668 | if (_Alloc_traits::_S_propagate_on_copy_assign()) |
669 | { | |
670 | if (!_Alloc_traits::_S_always_equal() && !_M_is_local() | |
671 | && _M_get_allocator() != __str._M_get_allocator()) | |
672 | { | |
673 | // Propagating allocator cannot free existing storage so must | |
674 | // deallocate it before replacing current allocator. | |
675 | if (__str.size() <= _S_local_capacity) | |
676 | { | |
677 | _M_destroy(_M_allocated_capacity); | |
678 | _M_data(_M_local_data()); | |
679 | _M_set_length(0); | |
680 | } | |
681 | else | |
682 | { | |
683 | const auto __len = __str.size(); | |
684 | auto __alloc = __str._M_get_allocator(); | |
685 | // If this allocation throws there are no effects: | |
686 | auto __ptr = _Alloc_traits::allocate(__alloc, __len + 1); | |
687 | _M_destroy(_M_allocated_capacity); | |
688 | _M_data(__ptr); | |
689 | _M_capacity(__len); | |
690 | _M_set_length(__len); | |
691 | } | |
692 | } | |
693 | std::__alloc_on_copy(_M_get_allocator(), __str._M_get_allocator()); | |
694 | } | |
b7aaabf0 | 695 | #endif |
ea9285db | 696 | return this->assign(__str); |
b7aaabf0 | 697 | } |
63f54259 | 698 | |
699 | /** | |
700 | * @brief Copy contents of @a s into this string. | |
701 | * @param __s Source null-terminated string. | |
702 | */ | |
703 | basic_string& | |
704 | operator=(const _CharT* __s) | |
705 | { return this->assign(__s); } | |
706 | ||
707 | /** | |
708 | * @brief Set value to string of length 1. | |
709 | * @param __c Source character. | |
710 | * | |
711 | * Assigning to a character makes this string length 1 and | |
712 | * (*this)[0] == @a c. | |
713 | */ | |
714 | basic_string& | |
715 | operator=(_CharT __c) | |
716 | { | |
717 | this->assign(1, __c); | |
718 | return *this; | |
719 | } | |
720 | ||
721 | #if __cplusplus >= 201103L | |
722 | /** | |
723 | * @brief Move assign the value of @a str to this string. | |
724 | * @param __str Source string. | |
725 | * | |
726 | * The contents of @a str are moved into this string (without copying). | |
727 | * @a str is a valid, but unspecified string. | |
728 | **/ | |
63f54259 | 729 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
730 | // 2063. Contradictory requirements for string move assignment | |
731 | basic_string& | |
732 | operator=(basic_string&& __str) | |
b7aaabf0 | 733 | noexcept(_Alloc_traits::_S_nothrow_move()) |
63f54259 | 734 | { |
b7aaabf0 | 735 | if (!_M_is_local() && _Alloc_traits::_S_propagate_on_move_assign() |
736 | && !_Alloc_traits::_S_always_equal() | |
737 | && _M_get_allocator() != __str._M_get_allocator()) | |
738 | { | |
739 | // Destroy existing storage before replacing allocator. | |
740 | _M_destroy(_M_allocated_capacity); | |
741 | _M_data(_M_local_data()); | |
742 | _M_set_length(0); | |
743 | } | |
744 | // Replace allocator if POCMA is true. | |
745 | std::__alloc_on_move(_M_get_allocator(), __str._M_get_allocator()); | |
746 | ||
76327690 | 747 | if (__str._M_is_local()) |
748 | { | |
749 | // We've always got room for a short string, just copy it. | |
750 | if (__str.size()) | |
751 | this->_S_copy(_M_data(), __str._M_data(), __str.size()); | |
752 | _M_set_length(__str.size()); | |
753 | } | |
754 | else if (_Alloc_traits::_S_propagate_on_move_assign() | |
755 | || _Alloc_traits::_S_always_equal() | |
756 | || _M_get_allocator() == __str._M_get_allocator()) | |
b7aaabf0 | 757 | { |
76327690 | 758 | // Just move the allocated pointer, our allocator can free it. |
b7aaabf0 | 759 | pointer __data = nullptr; |
760 | size_type __capacity; | |
761 | if (!_M_is_local()) | |
762 | { | |
763 | if (_Alloc_traits::_S_always_equal()) | |
764 | { | |
76327690 | 765 | // __str can reuse our existing storage. |
b7aaabf0 | 766 | __data = _M_data(); |
767 | __capacity = _M_allocated_capacity; | |
768 | } | |
76327690 | 769 | else // __str can't use it, so free it. |
b7aaabf0 | 770 | _M_destroy(_M_allocated_capacity); |
771 | } | |
772 | ||
773 | _M_data(__str._M_data()); | |
774 | _M_length(__str.length()); | |
775 | _M_capacity(__str._M_allocated_capacity); | |
776 | if (__data) | |
777 | { | |
778 | __str._M_data(__data); | |
779 | __str._M_capacity(__capacity); | |
780 | } | |
781 | else | |
782 | __str._M_data(__str._M_local_buf); | |
783 | } | |
76327690 | 784 | else // Need to do a deep copy |
785 | assign(__str); | |
b7aaabf0 | 786 | __str.clear(); |
63f54259 | 787 | return *this; |
788 | } | |
789 | ||
790 | /** | |
791 | * @brief Set value to string constructed from initializer %list. | |
792 | * @param __l std::initializer_list. | |
793 | */ | |
794 | basic_string& | |
795 | operator=(initializer_list<_CharT> __l) | |
796 | { | |
797 | this->assign(__l.begin(), __l.size()); | |
798 | return *this; | |
799 | } | |
800 | #endif // C++11 | |
801 | ||
98185b9f | 802 | #if __cplusplus >= 201703L |
76d7f2c2 | 803 | /** |
804 | * @brief Set value to string constructed from a string_view. | |
7c78f2e6 | 805 | * @param __svt An object convertible to string_view. |
76d7f2c2 | 806 | */ |
7c78f2e6 | 807 | template<typename _Tp> |
808 | _If_sv<_Tp, basic_string&> | |
809 | operator=(const _Tp& __svt) | |
810 | { return this->assign(__svt); } | |
76d7f2c2 | 811 | |
812 | /** | |
813 | * @brief Convert to a string_view. | |
814 | * @return A string_view. | |
815 | */ | |
816 | operator __sv_type() const noexcept | |
7c78f2e6 | 817 | { return __sv_type(data(), size()); } |
76d7f2c2 | 818 | #endif // C++17 |
819 | ||
63f54259 | 820 | // Iterators: |
821 | /** | |
822 | * Returns a read/write iterator that points to the first character in | |
823 | * the %string. | |
824 | */ | |
825 | iterator | |
826 | begin() _GLIBCXX_NOEXCEPT | |
827 | { return iterator(_M_data()); } | |
828 | ||
829 | /** | |
830 | * Returns a read-only (constant) iterator that points to the first | |
831 | * character in the %string. | |
832 | */ | |
833 | const_iterator | |
834 | begin() const _GLIBCXX_NOEXCEPT | |
835 | { return const_iterator(_M_data()); } | |
836 | ||
837 | /** | |
838 | * Returns a read/write iterator that points one past the last | |
839 | * character in the %string. | |
840 | */ | |
841 | iterator | |
842 | end() _GLIBCXX_NOEXCEPT | |
843 | { return iterator(_M_data() + this->size()); } | |
844 | ||
845 | /** | |
846 | * Returns a read-only (constant) iterator that points one past the | |
847 | * last character in the %string. | |
848 | */ | |
849 | const_iterator | |
850 | end() const _GLIBCXX_NOEXCEPT | |
851 | { return const_iterator(_M_data() + this->size()); } | |
852 | ||
853 | /** | |
854 | * Returns a read/write reverse iterator that points to the last | |
855 | * character in the %string. Iteration is done in reverse element | |
856 | * order. | |
857 | */ | |
858 | reverse_iterator | |
859 | rbegin() _GLIBCXX_NOEXCEPT | |
860 | { return reverse_iterator(this->end()); } | |
861 | ||
862 | /** | |
863 | * Returns a read-only (constant) reverse iterator that points | |
864 | * to the last character in the %string. Iteration is done in | |
865 | * reverse element order. | |
866 | */ | |
867 | const_reverse_iterator | |
868 | rbegin() const _GLIBCXX_NOEXCEPT | |
869 | { return const_reverse_iterator(this->end()); } | |
870 | ||
871 | /** | |
872 | * Returns a read/write reverse iterator that points to one before the | |
873 | * first character in the %string. Iteration is done in reverse | |
874 | * element order. | |
875 | */ | |
876 | reverse_iterator | |
877 | rend() _GLIBCXX_NOEXCEPT | |
878 | { return reverse_iterator(this->begin()); } | |
879 | ||
880 | /** | |
881 | * Returns a read-only (constant) reverse iterator that points | |
882 | * to one before the first character in the %string. Iteration | |
883 | * is done in reverse element order. | |
884 | */ | |
885 | const_reverse_iterator | |
886 | rend() const _GLIBCXX_NOEXCEPT | |
887 | { return const_reverse_iterator(this->begin()); } | |
888 | ||
889 | #if __cplusplus >= 201103L | |
890 | /** | |
891 | * Returns a read-only (constant) iterator that points to the first | |
892 | * character in the %string. | |
893 | */ | |
894 | const_iterator | |
895 | cbegin() const noexcept | |
896 | { return const_iterator(this->_M_data()); } | |
897 | ||
898 | /** | |
899 | * Returns a read-only (constant) iterator that points one past the | |
900 | * last character in the %string. | |
901 | */ | |
902 | const_iterator | |
903 | cend() const noexcept | |
904 | { return const_iterator(this->_M_data() + this->size()); } | |
905 | ||
906 | /** | |
907 | * Returns a read-only (constant) reverse iterator that points | |
908 | * to the last character in the %string. Iteration is done in | |
909 | * reverse element order. | |
910 | */ | |
911 | const_reverse_iterator | |
912 | crbegin() const noexcept | |
913 | { return const_reverse_iterator(this->end()); } | |
914 | ||
915 | /** | |
916 | * Returns a read-only (constant) reverse iterator that points | |
917 | * to one before the first character in the %string. Iteration | |
918 | * is done in reverse element order. | |
919 | */ | |
920 | const_reverse_iterator | |
921 | crend() const noexcept | |
922 | { return const_reverse_iterator(this->begin()); } | |
923 | #endif | |
924 | ||
925 | public: | |
926 | // Capacity: | |
927 | /// Returns the number of characters in the string, not including any | |
928 | /// null-termination. | |
929 | size_type | |
930 | size() const _GLIBCXX_NOEXCEPT | |
931 | { return _M_string_length; } | |
932 | ||
933 | /// Returns the number of characters in the string, not including any | |
934 | /// null-termination. | |
935 | size_type | |
936 | length() const _GLIBCXX_NOEXCEPT | |
937 | { return _M_string_length; } | |
938 | ||
939 | /// Returns the size() of the largest possible %string. | |
940 | size_type | |
941 | max_size() const _GLIBCXX_NOEXCEPT | |
942 | { return (_Alloc_traits::max_size(_M_get_allocator()) - 1) / 2; } | |
943 | ||
944 | /** | |
945 | * @brief Resizes the %string to the specified number of characters. | |
946 | * @param __n Number of characters the %string should contain. | |
947 | * @param __c Character to fill any new elements. | |
948 | * | |
949 | * This function will %resize the %string to the specified | |
950 | * number of characters. If the number is smaller than the | |
951 | * %string's current size the %string is truncated, otherwise | |
952 | * the %string is extended and new elements are %set to @a __c. | |
953 | */ | |
954 | void | |
955 | resize(size_type __n, _CharT __c); | |
956 | ||
957 | /** | |
958 | * @brief Resizes the %string to the specified number of characters. | |
959 | * @param __n Number of characters the %string should contain. | |
960 | * | |
961 | * This function will resize the %string to the specified length. If | |
962 | * the new size is smaller than the %string's current size the %string | |
963 | * is truncated, otherwise the %string is extended and new characters | |
964 | * are default-constructed. For basic types such as char, this means | |
965 | * setting them to 0. | |
966 | */ | |
967 | void | |
968 | resize(size_type __n) | |
969 | { this->resize(__n, _CharT()); } | |
970 | ||
971 | #if __cplusplus >= 201103L | |
972 | /// A non-binding request to reduce capacity() to size(). | |
973 | void | |
974 | shrink_to_fit() noexcept | |
975 | { | |
6904f6c1 | 976 | #if __cpp_exceptions |
63f54259 | 977 | if (capacity() > size()) |
978 | { | |
6904f6c1 | 979 | try |
63f54259 | 980 | { reserve(0); } |
6904f6c1 | 981 | catch(...) |
63f54259 | 982 | { } |
983 | } | |
6904f6c1 | 984 | #endif |
63f54259 | 985 | } |
986 | #endif | |
987 | ||
988 | /** | |
989 | * Returns the total number of characters that the %string can hold | |
990 | * before needing to allocate more memory. | |
991 | */ | |
992 | size_type | |
993 | capacity() const _GLIBCXX_NOEXCEPT | |
994 | { | |
995 | return _M_is_local() ? size_type(_S_local_capacity) | |
996 | : _M_allocated_capacity; | |
997 | } | |
998 | ||
999 | /** | |
1000 | * @brief Attempt to preallocate enough memory for specified number of | |
1001 | * characters. | |
1002 | * @param __res_arg Number of characters required. | |
1003 | * @throw std::length_error If @a __res_arg exceeds @c max_size(). | |
1004 | * | |
1005 | * This function attempts to reserve enough memory for the | |
1006 | * %string to hold the specified number of characters. If the | |
1007 | * number requested is more than max_size(), length_error is | |
1008 | * thrown. | |
1009 | * | |
1010 | * The advantage of this function is that if optimal code is a | |
1011 | * necessity and the user can determine the string length that will be | |
1012 | * required, the user can reserve the memory in %advance, and thus | |
1013 | * prevent a possible reallocation of memory and copying of %string | |
1014 | * data. | |
1015 | */ | |
1016 | void | |
1017 | reserve(size_type __res_arg = 0); | |
1018 | ||
1019 | /** | |
1020 | * Erases the string, making it empty. | |
1021 | */ | |
1022 | void | |
1023 | clear() _GLIBCXX_NOEXCEPT | |
1024 | { _M_set_length(0); } | |
1025 | ||
1026 | /** | |
1027 | * Returns true if the %string is empty. Equivalent to | |
1028 | * <code>*this == ""</code>. | |
1029 | */ | |
eaf966f3 | 1030 | _GLIBCXX_NODISCARD bool |
63f54259 | 1031 | empty() const _GLIBCXX_NOEXCEPT |
1032 | { return this->size() == 0; } | |
1033 | ||
1034 | // Element access: | |
1035 | /** | |
1036 | * @brief Subscript access to the data contained in the %string. | |
1037 | * @param __pos The index of the character to access. | |
1038 | * @return Read-only (constant) reference to the character. | |
1039 | * | |
1040 | * This operator allows for easy, array-style, data access. | |
1041 | * Note that data access with this operator is unchecked and | |
1042 | * out_of_range lookups are not defined. (For checked lookups | |
1043 | * see at().) | |
1044 | */ | |
1045 | const_reference | |
1046 | operator[] (size_type __pos) const _GLIBCXX_NOEXCEPT | |
1047 | { | |
6b5e6f09 | 1048 | __glibcxx_assert(__pos <= size()); |
63f54259 | 1049 | return _M_data()[__pos]; |
1050 | } | |
1051 | ||
1052 | /** | |
1053 | * @brief Subscript access to the data contained in the %string. | |
1054 | * @param __pos The index of the character to access. | |
1055 | * @return Read/write reference to the character. | |
1056 | * | |
1057 | * This operator allows for easy, array-style, data access. | |
1058 | * Note that data access with this operator is unchecked and | |
1059 | * out_of_range lookups are not defined. (For checked lookups | |
1060 | * see at().) | |
1061 | */ | |
1062 | reference | |
1063 | operator[](size_type __pos) | |
1064 | { | |
1065 | // Allow pos == size() both in C++98 mode, as v3 extension, | |
1066 | // and in C++11 mode. | |
6b5e6f09 | 1067 | __glibcxx_assert(__pos <= size()); |
63f54259 | 1068 | // In pedantic mode be strict in C++98 mode. |
1069 | _GLIBCXX_DEBUG_PEDASSERT(__cplusplus >= 201103L || __pos < size()); | |
1070 | return _M_data()[__pos]; | |
1071 | } | |
1072 | ||
1073 | /** | |
1074 | * @brief Provides access to the data contained in the %string. | |
1075 | * @param __n The index of the character to access. | |
1076 | * @return Read-only (const) reference to the character. | |
1077 | * @throw std::out_of_range If @a n is an invalid index. | |
1078 | * | |
1079 | * This function provides for safer data access. The parameter is | |
1080 | * first checked that it is in the range of the string. The function | |
1081 | * throws out_of_range if the check fails. | |
1082 | */ | |
1083 | const_reference | |
1084 | at(size_type __n) const | |
1085 | { | |
1086 | if (__n >= this->size()) | |
1087 | __throw_out_of_range_fmt(__N("basic_string::at: __n " | |
1088 | "(which is %zu) >= this->size() " | |
1089 | "(which is %zu)"), | |
1090 | __n, this->size()); | |
1091 | return _M_data()[__n]; | |
1092 | } | |
1093 | ||
1094 | /** | |
1095 | * @brief Provides access to the data contained in the %string. | |
1096 | * @param __n The index of the character to access. | |
1097 | * @return Read/write reference to the character. | |
1098 | * @throw std::out_of_range If @a n is an invalid index. | |
1099 | * | |
1100 | * This function provides for safer data access. The parameter is | |
1101 | * first checked that it is in the range of the string. The function | |
1102 | * throws out_of_range if the check fails. | |
1103 | */ | |
1104 | reference | |
1105 | at(size_type __n) | |
1106 | { | |
1107 | if (__n >= size()) | |
1108 | __throw_out_of_range_fmt(__N("basic_string::at: __n " | |
1109 | "(which is %zu) >= this->size() " | |
1110 | "(which is %zu)"), | |
1111 | __n, this->size()); | |
1112 | return _M_data()[__n]; | |
1113 | } | |
1114 | ||
1115 | #if __cplusplus >= 201103L | |
1116 | /** | |
1117 | * Returns a read/write reference to the data at the first | |
1118 | * element of the %string. | |
1119 | */ | |
1120 | reference | |
1121 | front() noexcept | |
ffff0e95 | 1122 | { |
6b5e6f09 | 1123 | __glibcxx_assert(!empty()); |
ffff0e95 | 1124 | return operator[](0); |
1125 | } | |
63f54259 | 1126 | |
1127 | /** | |
1128 | * Returns a read-only (constant) reference to the data at the first | |
1129 | * element of the %string. | |
1130 | */ | |
1131 | const_reference | |
1132 | front() const noexcept | |
ffff0e95 | 1133 | { |
6b5e6f09 | 1134 | __glibcxx_assert(!empty()); |
ffff0e95 | 1135 | return operator[](0); |
1136 | } | |
63f54259 | 1137 | |
1138 | /** | |
1139 | * Returns a read/write reference to the data at the last | |
1140 | * element of the %string. | |
1141 | */ | |
1142 | reference | |
1143 | back() noexcept | |
ffff0e95 | 1144 | { |
6b5e6f09 | 1145 | __glibcxx_assert(!empty()); |
ffff0e95 | 1146 | return operator[](this->size() - 1); |
1147 | } | |
63f54259 | 1148 | |
1149 | /** | |
1150 | * Returns a read-only (constant) reference to the data at the | |
1151 | * last element of the %string. | |
1152 | */ | |
1153 | const_reference | |
1154 | back() const noexcept | |
ffff0e95 | 1155 | { |
6b5e6f09 | 1156 | __glibcxx_assert(!empty()); |
ffff0e95 | 1157 | return operator[](this->size() - 1); |
1158 | } | |
63f54259 | 1159 | #endif |
1160 | ||
1161 | // Modifiers: | |
1162 | /** | |
1163 | * @brief Append a string to this string. | |
1164 | * @param __str The string to append. | |
1165 | * @return Reference to this string. | |
1166 | */ | |
1167 | basic_string& | |
1168 | operator+=(const basic_string& __str) | |
1169 | { return this->append(__str); } | |
1170 | ||
1171 | /** | |
1172 | * @brief Append a C string. | |
1173 | * @param __s The C string to append. | |
1174 | * @return Reference to this string. | |
1175 | */ | |
1176 | basic_string& | |
1177 | operator+=(const _CharT* __s) | |
1178 | { return this->append(__s); } | |
1179 | ||
1180 | /** | |
1181 | * @brief Append a character. | |
1182 | * @param __c The character to append. | |
1183 | * @return Reference to this string. | |
1184 | */ | |
1185 | basic_string& | |
1186 | operator+=(_CharT __c) | |
1187 | { | |
1188 | this->push_back(__c); | |
1189 | return *this; | |
1190 | } | |
1191 | ||
1192 | #if __cplusplus >= 201103L | |
1193 | /** | |
1194 | * @brief Append an initializer_list of characters. | |
1195 | * @param __l The initializer_list of characters to be appended. | |
1196 | * @return Reference to this string. | |
1197 | */ | |
1198 | basic_string& | |
1199 | operator+=(initializer_list<_CharT> __l) | |
1200 | { return this->append(__l.begin(), __l.size()); } | |
1201 | #endif // C++11 | |
1202 | ||
98185b9f | 1203 | #if __cplusplus >= 201703L |
76d7f2c2 | 1204 | /** |
1205 | * @brief Append a string_view. | |
7c78f2e6 | 1206 | * @param __svt An object convertible to string_view to be appended. |
76d7f2c2 | 1207 | * @return Reference to this string. |
1208 | */ | |
7c78f2e6 | 1209 | template<typename _Tp> |
1210 | _If_sv<_Tp, basic_string&> | |
1211 | operator+=(const _Tp& __svt) | |
1212 | { return this->append(__svt); } | |
76d7f2c2 | 1213 | #endif // C++17 |
1214 | ||
63f54259 | 1215 | /** |
1216 | * @brief Append a string to this string. | |
1217 | * @param __str The string to append. | |
1218 | * @return Reference to this string. | |
1219 | */ | |
1220 | basic_string& | |
1221 | append(const basic_string& __str) | |
e4416257 | 1222 | { return _M_append(__str._M_data(), __str.size()); } |
63f54259 | 1223 | |
1224 | /** | |
1225 | * @brief Append a substring. | |
1226 | * @param __str The string to append. | |
1227 | * @param __pos Index of the first character of str to append. | |
1228 | * @param __n The number of characters to append. | |
1229 | * @return Reference to this string. | |
1230 | * @throw std::out_of_range if @a __pos is not a valid index. | |
1231 | * | |
1232 | * This function appends @a __n characters from @a __str | |
1233 | * starting at @a __pos to this string. If @a __n is is larger | |
1234 | * than the number of available characters in @a __str, the | |
1235 | * remainder of @a __str is appended. | |
1236 | */ | |
1237 | basic_string& | |
cf3c455b | 1238 | append(const basic_string& __str, size_type __pos, size_type __n = npos) |
e4416257 | 1239 | { return _M_append(__str._M_data() |
63f54259 | 1240 | + __str._M_check(__pos, "basic_string::append"), |
1241 | __str._M_limit(__pos, __n)); } | |
1242 | ||
1243 | /** | |
1244 | * @brief Append a C substring. | |
1245 | * @param __s The C string to append. | |
1246 | * @param __n The number of characters to append. | |
1247 | * @return Reference to this string. | |
1248 | */ | |
1249 | basic_string& | |
1250 | append(const _CharT* __s, size_type __n) | |
1251 | { | |
1252 | __glibcxx_requires_string_len(__s, __n); | |
1253 | _M_check_length(size_type(0), __n, "basic_string::append"); | |
1254 | return _M_append(__s, __n); | |
1255 | } | |
1256 | ||
1257 | /** | |
1258 | * @brief Append a C string. | |
1259 | * @param __s The C string to append. | |
1260 | * @return Reference to this string. | |
1261 | */ | |
1262 | basic_string& | |
1263 | append(const _CharT* __s) | |
1264 | { | |
1265 | __glibcxx_requires_string(__s); | |
1266 | const size_type __n = traits_type::length(__s); | |
1267 | _M_check_length(size_type(0), __n, "basic_string::append"); | |
1268 | return _M_append(__s, __n); | |
1269 | } | |
1270 | ||
1271 | /** | |
1272 | * @brief Append multiple characters. | |
1273 | * @param __n The number of characters to append. | |
1274 | * @param __c The character to use. | |
1275 | * @return Reference to this string. | |
1276 | * | |
1277 | * Appends __n copies of __c to this string. | |
1278 | */ | |
1279 | basic_string& | |
1280 | append(size_type __n, _CharT __c) | |
1281 | { return _M_replace_aux(this->size(), size_type(0), __n, __c); } | |
1282 | ||
1283 | #if __cplusplus >= 201103L | |
1284 | /** | |
1285 | * @brief Append an initializer_list of characters. | |
1286 | * @param __l The initializer_list of characters to append. | |
1287 | * @return Reference to this string. | |
1288 | */ | |
1289 | basic_string& | |
1290 | append(initializer_list<_CharT> __l) | |
1291 | { return this->append(__l.begin(), __l.size()); } | |
1292 | #endif // C++11 | |
1293 | ||
1294 | /** | |
1295 | * @brief Append a range of characters. | |
1296 | * @param __first Iterator referencing the first character to append. | |
1297 | * @param __last Iterator marking the end of the range. | |
1298 | * @return Reference to this string. | |
1299 | * | |
1300 | * Appends characters in the range [__first,__last) to this string. | |
1301 | */ | |
1302 | #if __cplusplus >= 201103L | |
1303 | template<class _InputIterator, | |
1304 | typename = std::_RequireInputIter<_InputIterator>> | |
1305 | #else | |
1306 | template<class _InputIterator> | |
1307 | #endif | |
1308 | basic_string& | |
1309 | append(_InputIterator __first, _InputIterator __last) | |
1310 | { return this->replace(end(), end(), __first, __last); } | |
1311 | ||
98185b9f | 1312 | #if __cplusplus >= 201703L |
76d7f2c2 | 1313 | /** |
1314 | * @brief Append a string_view. | |
7c78f2e6 | 1315 | * @param __svt An object convertible to string_view to be appended. |
76d7f2c2 | 1316 | * @return Reference to this string. |
1317 | */ | |
7c78f2e6 | 1318 | template<typename _Tp> |
1319 | _If_sv<_Tp, basic_string&> | |
1320 | append(const _Tp& __svt) | |
1321 | { | |
1322 | __sv_type __sv = __svt; | |
1323 | return this->append(__sv.data(), __sv.size()); | |
1324 | } | |
76d7f2c2 | 1325 | |
1326 | /** | |
1327 | * @brief Append a range of characters from a string_view. | |
7c78f2e6 | 1328 | * @param __svt An object convertible to string_view to be appended from. |
76d7f2c2 | 1329 | * @param __pos The position in the string_view to append from. |
1330 | * @param __n The number of characters to append from the string_view. | |
1331 | * @return Reference to this string. | |
1332 | */ | |
7c78f2e6 | 1333 | template<typename _Tp> |
1334 | _If_sv<_Tp, basic_string&> | |
7d475d13 | 1335 | append(const _Tp& __svt, size_type __pos, size_type __n = npos) |
1336 | { | |
1337 | __sv_type __sv = __svt; | |
1338 | return _M_append(__sv.data() | |
809f1d63 | 1339 | + std::__sv_check(__sv.size(), __pos, "basic_string::append"), |
1340 | std::__sv_limit(__sv.size(), __pos, __n)); | |
7d475d13 | 1341 | } |
76d7f2c2 | 1342 | #endif // C++17 |
1343 | ||
63f54259 | 1344 | /** |
1345 | * @brief Append a single character. | |
1346 | * @param __c Character to append. | |
1347 | */ | |
1348 | void | |
1349 | push_back(_CharT __c) | |
1350 | { | |
1351 | const size_type __size = this->size(); | |
1352 | if (__size + 1 > this->capacity()) | |
1353 | this->_M_mutate(__size, size_type(0), 0, size_type(1)); | |
1354 | traits_type::assign(this->_M_data()[__size], __c); | |
1355 | this->_M_set_length(__size + 1); | |
1356 | } | |
1357 | ||
1358 | /** | |
1359 | * @brief Set value to contents of another string. | |
1360 | * @param __str Source string to use. | |
1361 | * @return Reference to this string. | |
1362 | */ | |
1363 | basic_string& | |
1364 | assign(const basic_string& __str) | |
1365 | { | |
1366 | this->_M_assign(__str); | |
1367 | return *this; | |
1368 | } | |
1369 | ||
1370 | #if __cplusplus >= 201103L | |
1371 | /** | |
1372 | * @brief Set value to contents of another string. | |
1373 | * @param __str Source string to use. | |
1374 | * @return Reference to this string. | |
1375 | * | |
1376 | * This function sets this string to the exact contents of @a __str. | |
1377 | * @a __str is a valid, but unspecified string. | |
1378 | */ | |
1379 | basic_string& | |
1380 | assign(basic_string&& __str) | |
b7aaabf0 | 1381 | noexcept(_Alloc_traits::_S_nothrow_move()) |
63f54259 | 1382 | { |
1383 | // _GLIBCXX_RESOLVE_LIB_DEFECTS | |
1384 | // 2063. Contradictory requirements for string move assignment | |
1385 | return *this = std::move(__str); | |
1386 | } | |
1387 | #endif // C++11 | |
1388 | ||
1389 | /** | |
1390 | * @brief Set value to a substring of a string. | |
1391 | * @param __str The string to use. | |
1392 | * @param __pos Index of the first character of str. | |
1393 | * @param __n Number of characters to use. | |
1394 | * @return Reference to this string. | |
1395 | * @throw std::out_of_range if @a pos is not a valid index. | |
1396 | * | |
1397 | * This function sets this string to the substring of @a __str | |
1398 | * consisting of @a __n characters at @a __pos. If @a __n is | |
1399 | * is larger than the number of available characters in @a | |
1400 | * __str, the remainder of @a __str is used. | |
1401 | */ | |
1402 | basic_string& | |
cf3c455b | 1403 | assign(const basic_string& __str, size_type __pos, size_type __n = npos) |
e4416257 | 1404 | { return _M_replace(size_type(0), this->size(), __str._M_data() |
63f54259 | 1405 | + __str._M_check(__pos, "basic_string::assign"), |
1406 | __str._M_limit(__pos, __n)); } | |
1407 | ||
1408 | /** | |
1409 | * @brief Set value to a C substring. | |
1410 | * @param __s The C string to use. | |
1411 | * @param __n Number of characters to use. | |
1412 | * @return Reference to this string. | |
1413 | * | |
1414 | * This function sets the value of this string to the first @a __n | |
1415 | * characters of @a __s. If @a __n is is larger than the number of | |
1416 | * available characters in @a __s, the remainder of @a __s is used. | |
1417 | */ | |
1418 | basic_string& | |
1419 | assign(const _CharT* __s, size_type __n) | |
1420 | { | |
1421 | __glibcxx_requires_string_len(__s, __n); | |
1422 | return _M_replace(size_type(0), this->size(), __s, __n); | |
1423 | } | |
1424 | ||
1425 | /** | |
1426 | * @brief Set value to contents of a C string. | |
1427 | * @param __s The C string to use. | |
1428 | * @return Reference to this string. | |
1429 | * | |
1430 | * This function sets the value of this string to the value of @a __s. | |
1431 | * The data is copied, so there is no dependence on @a __s once the | |
1432 | * function returns. | |
1433 | */ | |
1434 | basic_string& | |
1435 | assign(const _CharT* __s) | |
1436 | { | |
1437 | __glibcxx_requires_string(__s); | |
1438 | return _M_replace(size_type(0), this->size(), __s, | |
1439 | traits_type::length(__s)); | |
1440 | } | |
1441 | ||
1442 | /** | |
1443 | * @brief Set value to multiple characters. | |
1444 | * @param __n Length of the resulting string. | |
1445 | * @param __c The character to use. | |
1446 | * @return Reference to this string. | |
1447 | * | |
1448 | * This function sets the value of this string to @a __n copies of | |
1449 | * character @a __c. | |
1450 | */ | |
1451 | basic_string& | |
1452 | assign(size_type __n, _CharT __c) | |
1453 | { return _M_replace_aux(size_type(0), this->size(), __n, __c); } | |
1454 | ||
1455 | /** | |
1456 | * @brief Set value to a range of characters. | |
1457 | * @param __first Iterator referencing the first character to append. | |
1458 | * @param __last Iterator marking the end of the range. | |
1459 | * @return Reference to this string. | |
1460 | * | |
1461 | * Sets value of string to characters in the range [__first,__last). | |
1462 | */ | |
1463 | #if __cplusplus >= 201103L | |
1464 | template<class _InputIterator, | |
1465 | typename = std::_RequireInputIter<_InputIterator>> | |
1466 | #else | |
1467 | template<class _InputIterator> | |
1468 | #endif | |
1469 | basic_string& | |
1470 | assign(_InputIterator __first, _InputIterator __last) | |
1471 | { return this->replace(begin(), end(), __first, __last); } | |
1472 | ||
1473 | #if __cplusplus >= 201103L | |
1474 | /** | |
1475 | * @brief Set value to an initializer_list of characters. | |
1476 | * @param __l The initializer_list of characters to assign. | |
1477 | * @return Reference to this string. | |
1478 | */ | |
1479 | basic_string& | |
1480 | assign(initializer_list<_CharT> __l) | |
1481 | { return this->assign(__l.begin(), __l.size()); } | |
1482 | #endif // C++11 | |
1483 | ||
98185b9f | 1484 | #if __cplusplus >= 201703L |
76d7f2c2 | 1485 | /** |
1486 | * @brief Set value from a string_view. | |
7c78f2e6 | 1487 | * @param __svt The source object convertible to string_view. |
76d7f2c2 | 1488 | * @return Reference to this string. |
1489 | */ | |
7c78f2e6 | 1490 | template<typename _Tp> |
1491 | _If_sv<_Tp, basic_string&> | |
1492 | assign(const _Tp& __svt) | |
1493 | { | |
1494 | __sv_type __sv = __svt; | |
1495 | return this->assign(__sv.data(), __sv.size()); | |
1496 | } | |
76d7f2c2 | 1497 | |
1498 | /** | |
1499 | * @brief Set value from a range of characters in a string_view. | |
7c78f2e6 | 1500 | * @param __svt The source object convertible to string_view. |
76d7f2c2 | 1501 | * @param __pos The position in the string_view to assign from. |
1502 | * @param __n The number of characters to assign. | |
1503 | * @return Reference to this string. | |
1504 | */ | |
7c78f2e6 | 1505 | template<typename _Tp> |
7d475d13 | 1506 | _If_sv<_Tp, basic_string&> |
1507 | assign(const _Tp& __svt, size_type __pos, size_type __n = npos) | |
1508 | { | |
1509 | __sv_type __sv = __svt; | |
809f1d63 | 1510 | return _M_replace(size_type(0), this->size(), |
1511 | __sv.data() | |
1512 | + std::__sv_check(__sv.size(), __pos, "basic_string::assign"), | |
1513 | std::__sv_limit(__sv.size(), __pos, __n)); | |
7d475d13 | 1514 | } |
76d7f2c2 | 1515 | #endif // C++17 |
1516 | ||
63f54259 | 1517 | #if __cplusplus >= 201103L |
1518 | /** | |
1519 | * @brief Insert multiple characters. | |
1520 | * @param __p Const_iterator referencing location in string to | |
1521 | * insert at. | |
1522 | * @param __n Number of characters to insert | |
1523 | * @param __c The character to insert. | |
1524 | * @return Iterator referencing the first inserted char. | |
1525 | * @throw std::length_error If new length exceeds @c max_size(). | |
1526 | * | |
1527 | * Inserts @a __n copies of character @a __c starting at the | |
1528 | * position referenced by iterator @a __p. If adding | |
1529 | * characters causes the length to exceed max_size(), | |
1530 | * length_error is thrown. The value of the string doesn't | |
1531 | * change if an error is thrown. | |
1532 | */ | |
1533 | iterator | |
1534 | insert(const_iterator __p, size_type __n, _CharT __c) | |
1535 | { | |
1536 | _GLIBCXX_DEBUG_PEDASSERT(__p >= begin() && __p <= end()); | |
1537 | const size_type __pos = __p - begin(); | |
1538 | this->replace(__p, __p, __n, __c); | |
1539 | return iterator(this->_M_data() + __pos); | |
1540 | } | |
1541 | #else | |
1542 | /** | |
1543 | * @brief Insert multiple characters. | |
1544 | * @param __p Iterator referencing location in string to insert at. | |
1545 | * @param __n Number of characters to insert | |
1546 | * @param __c The character to insert. | |
1547 | * @throw std::length_error If new length exceeds @c max_size(). | |
1548 | * | |
1549 | * Inserts @a __n copies of character @a __c starting at the | |
1550 | * position referenced by iterator @a __p. If adding | |
1551 | * characters causes the length to exceed max_size(), | |
1552 | * length_error is thrown. The value of the string doesn't | |
1553 | * change if an error is thrown. | |
1554 | */ | |
1555 | void | |
1556 | insert(iterator __p, size_type __n, _CharT __c) | |
1557 | { this->replace(__p, __p, __n, __c); } | |
1558 | #endif | |
1559 | ||
1560 | #if __cplusplus >= 201103L | |
1561 | /** | |
1562 | * @brief Insert a range of characters. | |
1563 | * @param __p Const_iterator referencing location in string to | |
1564 | * insert at. | |
1565 | * @param __beg Start of range. | |
1566 | * @param __end End of range. | |
1567 | * @return Iterator referencing the first inserted char. | |
1568 | * @throw std::length_error If new length exceeds @c max_size(). | |
1569 | * | |
1570 | * Inserts characters in range [beg,end). If adding characters | |
1571 | * causes the length to exceed max_size(), length_error is | |
1572 | * thrown. The value of the string doesn't change if an error | |
1573 | * is thrown. | |
1574 | */ | |
1575 | template<class _InputIterator, | |
1576 | typename = std::_RequireInputIter<_InputIterator>> | |
1577 | iterator | |
1578 | insert(const_iterator __p, _InputIterator __beg, _InputIterator __end) | |
1579 | { | |
1580 | _GLIBCXX_DEBUG_PEDASSERT(__p >= begin() && __p <= end()); | |
1581 | const size_type __pos = __p - begin(); | |
1582 | this->replace(__p, __p, __beg, __end); | |
1583 | return iterator(this->_M_data() + __pos); | |
1584 | } | |
1585 | #else | |
1586 | /** | |
1587 | * @brief Insert a range of characters. | |
1588 | * @param __p Iterator referencing location in string to insert at. | |
1589 | * @param __beg Start of range. | |
1590 | * @param __end End of range. | |
1591 | * @throw std::length_error If new length exceeds @c max_size(). | |
1592 | * | |
1593 | * Inserts characters in range [__beg,__end). If adding | |
1594 | * characters causes the length to exceed max_size(), | |
1595 | * length_error is thrown. The value of the string doesn't | |
1596 | * change if an error is thrown. | |
1597 | */ | |
1598 | template<class _InputIterator> | |
1599 | void | |
1600 | insert(iterator __p, _InputIterator __beg, _InputIterator __end) | |
1601 | { this->replace(__p, __p, __beg, __end); } | |
1602 | #endif | |
1603 | ||
1604 | #if __cplusplus >= 201103L | |
1605 | /** | |
1606 | * @brief Insert an initializer_list of characters. | |
1607 | * @param __p Iterator referencing location in string to insert at. | |
1608 | * @param __l The initializer_list of characters to insert. | |
1609 | * @throw std::length_error If new length exceeds @c max_size(). | |
1610 | */ | |
26909ed4 | 1611 | iterator |
1612 | insert(const_iterator __p, initializer_list<_CharT> __l) | |
1613 | { return this->insert(__p, __l.begin(), __l.end()); } | |
1614 | ||
1615 | #ifdef _GLIBCXX_DEFINING_STRING_INSTANTIATIONS | |
1616 | // See PR libstdc++/83328 | |
63f54259 | 1617 | void |
1618 | insert(iterator __p, initializer_list<_CharT> __l) | |
1619 | { | |
1620 | _GLIBCXX_DEBUG_PEDASSERT(__p >= begin() && __p <= end()); | |
1621 | this->insert(__p - begin(), __l.begin(), __l.size()); | |
1622 | } | |
26909ed4 | 1623 | #endif |
63f54259 | 1624 | #endif // C++11 |
1625 | ||
1626 | /** | |
1627 | * @brief Insert value of a string. | |
c88f1c9d | 1628 | * @param __pos1 Position in string to insert at. |
63f54259 | 1629 | * @param __str The string to insert. |
1630 | * @return Reference to this string. | |
1631 | * @throw std::length_error If new length exceeds @c max_size(). | |
1632 | * | |
1633 | * Inserts value of @a __str starting at @a __pos1. If adding | |
1634 | * characters causes the length to exceed max_size(), | |
1635 | * length_error is thrown. The value of the string doesn't | |
1636 | * change if an error is thrown. | |
1637 | */ | |
1638 | basic_string& | |
1639 | insert(size_type __pos1, const basic_string& __str) | |
1640 | { return this->replace(__pos1, size_type(0), | |
e4416257 | 1641 | __str._M_data(), __str.size()); } |
63f54259 | 1642 | |
1643 | /** | |
1644 | * @brief Insert a substring. | |
c88f1c9d | 1645 | * @param __pos1 Position in string to insert at. |
1646 | * @param __str The string to insert. | |
63f54259 | 1647 | * @param __pos2 Start of characters in str to insert. |
1648 | * @param __n Number of characters to insert. | |
1649 | * @return Reference to this string. | |
1650 | * @throw std::length_error If new length exceeds @c max_size(). | |
1651 | * @throw std::out_of_range If @a pos1 > size() or | |
1652 | * @a __pos2 > @a str.size(). | |
1653 | * | |
1654 | * Starting at @a pos1, insert @a __n character of @a __str | |
1655 | * beginning with @a __pos2. If adding characters causes the | |
1656 | * length to exceed max_size(), length_error is thrown. If @a | |
1657 | * __pos1 is beyond the end of this string or @a __pos2 is | |
1658 | * beyond the end of @a __str, out_of_range is thrown. The | |
1659 | * value of the string doesn't change if an error is thrown. | |
1660 | */ | |
1661 | basic_string& | |
1662 | insert(size_type __pos1, const basic_string& __str, | |
cf3c455b | 1663 | size_type __pos2, size_type __n = npos) |
e4416257 | 1664 | { return this->replace(__pos1, size_type(0), __str._M_data() |
63f54259 | 1665 | + __str._M_check(__pos2, "basic_string::insert"), |
1666 | __str._M_limit(__pos2, __n)); } | |
1667 | ||
1668 | /** | |
1669 | * @brief Insert a C substring. | |
c88f1c9d | 1670 | * @param __pos Position in string to insert at. |
63f54259 | 1671 | * @param __s The C string to insert. |
1672 | * @param __n The number of characters to insert. | |
1673 | * @return Reference to this string. | |
1674 | * @throw std::length_error If new length exceeds @c max_size(). | |
1675 | * @throw std::out_of_range If @a __pos is beyond the end of this | |
1676 | * string. | |
1677 | * | |
1678 | * Inserts the first @a __n characters of @a __s starting at @a | |
1679 | * __pos. If adding characters causes the length to exceed | |
1680 | * max_size(), length_error is thrown. If @a __pos is beyond | |
1681 | * end(), out_of_range is thrown. The value of the string | |
1682 | * doesn't change if an error is thrown. | |
1683 | */ | |
1684 | basic_string& | |
1685 | insert(size_type __pos, const _CharT* __s, size_type __n) | |
1686 | { return this->replace(__pos, size_type(0), __s, __n); } | |
1687 | ||
1688 | /** | |
1689 | * @brief Insert a C string. | |
c88f1c9d | 1690 | * @param __pos Position in string to insert at. |
63f54259 | 1691 | * @param __s The C string to insert. |
1692 | * @return Reference to this string. | |
1693 | * @throw std::length_error If new length exceeds @c max_size(). | |
1694 | * @throw std::out_of_range If @a pos is beyond the end of this | |
1695 | * string. | |
1696 | * | |
1697 | * Inserts the first @a n characters of @a __s starting at @a __pos. If | |
1698 | * adding characters causes the length to exceed max_size(), | |
1699 | * length_error is thrown. If @a __pos is beyond end(), out_of_range is | |
1700 | * thrown. The value of the string doesn't change if an error is | |
1701 | * thrown. | |
1702 | */ | |
1703 | basic_string& | |
1704 | insert(size_type __pos, const _CharT* __s) | |
1705 | { | |
1706 | __glibcxx_requires_string(__s); | |
1707 | return this->replace(__pos, size_type(0), __s, | |
1708 | traits_type::length(__s)); | |
1709 | } | |
1710 | ||
1711 | /** | |
1712 | * @brief Insert multiple characters. | |
1713 | * @param __pos Index in string to insert at. | |
1714 | * @param __n Number of characters to insert | |
1715 | * @param __c The character to insert. | |
1716 | * @return Reference to this string. | |
1717 | * @throw std::length_error If new length exceeds @c max_size(). | |
1718 | * @throw std::out_of_range If @a __pos is beyond the end of this | |
1719 | * string. | |
1720 | * | |
1721 | * Inserts @a __n copies of character @a __c starting at index | |
1722 | * @a __pos. If adding characters causes the length to exceed | |
1723 | * max_size(), length_error is thrown. If @a __pos > length(), | |
1724 | * out_of_range is thrown. The value of the string doesn't | |
1725 | * change if an error is thrown. | |
1726 | */ | |
1727 | basic_string& | |
1728 | insert(size_type __pos, size_type __n, _CharT __c) | |
1729 | { return _M_replace_aux(_M_check(__pos, "basic_string::insert"), | |
1730 | size_type(0), __n, __c); } | |
1731 | ||
1732 | /** | |
1733 | * @brief Insert one character. | |
1734 | * @param __p Iterator referencing position in string to insert at. | |
1735 | * @param __c The character to insert. | |
1736 | * @return Iterator referencing newly inserted char. | |
1737 | * @throw std::length_error If new length exceeds @c max_size(). | |
1738 | * | |
1739 | * Inserts character @a __c at position referenced by @a __p. | |
1740 | * If adding character causes the length to exceed max_size(), | |
1741 | * length_error is thrown. If @a __p is beyond end of string, | |
1742 | * out_of_range is thrown. The value of the string doesn't | |
1743 | * change if an error is thrown. | |
1744 | */ | |
1745 | iterator | |
1746 | insert(__const_iterator __p, _CharT __c) | |
1747 | { | |
1748 | _GLIBCXX_DEBUG_PEDASSERT(__p >= begin() && __p <= end()); | |
1749 | const size_type __pos = __p - begin(); | |
1750 | _M_replace_aux(__pos, size_type(0), size_type(1), __c); | |
1751 | return iterator(_M_data() + __pos); | |
1752 | } | |
1753 | ||
98185b9f | 1754 | #if __cplusplus >= 201703L |
76d7f2c2 | 1755 | /** |
1756 | * @brief Insert a string_view. | |
c88f1c9d | 1757 | * @param __pos Position in string to insert at. |
7c78f2e6 | 1758 | * @param __svt The object convertible to string_view to insert. |
76d7f2c2 | 1759 | * @return Reference to this string. |
1760 | */ | |
7c78f2e6 | 1761 | template<typename _Tp> |
1762 | _If_sv<_Tp, basic_string&> | |
1763 | insert(size_type __pos, const _Tp& __svt) | |
1764 | { | |
1765 | __sv_type __sv = __svt; | |
1766 | return this->insert(__pos, __sv.data(), __sv.size()); | |
1767 | } | |
76d7f2c2 | 1768 | |
1769 | /** | |
1770 | * @brief Insert a string_view. | |
c88f1c9d | 1771 | * @param __pos1 Position in string to insert at. |
1772 | * @param __svt The object convertible to string_view to insert from. | |
1773 | * @param __pos2 Start of characters in str to insert. | |
76d7f2c2 | 1774 | * @param __n The number of characters to insert. |
1775 | * @return Reference to this string. | |
1776 | */ | |
7c78f2e6 | 1777 | template<typename _Tp> |
7d475d13 | 1778 | _If_sv<_Tp, basic_string&> |
1779 | insert(size_type __pos1, const _Tp& __svt, | |
1780 | size_type __pos2, size_type __n = npos) | |
1781 | { | |
1782 | __sv_type __sv = __svt; | |
809f1d63 | 1783 | return this->replace(__pos1, size_type(0), |
1784 | __sv.data() | |
1785 | + std::__sv_check(__sv.size(), __pos2, "basic_string::insert"), | |
1786 | std::__sv_limit(__sv.size(), __pos2, __n)); | |
7d475d13 | 1787 | } |
76d7f2c2 | 1788 | #endif // C++17 |
1789 | ||
63f54259 | 1790 | /** |
1791 | * @brief Remove characters. | |
1792 | * @param __pos Index of first character to remove (default 0). | |
1793 | * @param __n Number of characters to remove (default remainder). | |
1794 | * @return Reference to this string. | |
1795 | * @throw std::out_of_range If @a pos is beyond the end of this | |
1796 | * string. | |
1797 | * | |
1798 | * Removes @a __n characters from this string starting at @a | |
1799 | * __pos. The length of the string is reduced by @a __n. If | |
1800 | * there are < @a __n characters to remove, the remainder of | |
1801 | * the string is truncated. If @a __p is beyond end of string, | |
1802 | * out_of_range is thrown. The value of the string doesn't | |
1803 | * change if an error is thrown. | |
1804 | */ | |
1805 | basic_string& | |
1806 | erase(size_type __pos = 0, size_type __n = npos) | |
1807 | { | |
31a75284 | 1808 | _M_check(__pos, "basic_string::erase"); |
1809 | if (__n == npos) | |
1810 | this->_M_set_length(__pos); | |
1811 | else if (__n != 0) | |
1812 | this->_M_erase(__pos, _M_limit(__pos, __n)); | |
63f54259 | 1813 | return *this; |
1814 | } | |
1815 | ||
1816 | /** | |
1817 | * @brief Remove one character. | |
1818 | * @param __position Iterator referencing the character to remove. | |
1819 | * @return iterator referencing same location after removal. | |
1820 | * | |
1821 | * Removes the character at @a __position from this string. The value | |
1822 | * of the string doesn't change if an error is thrown. | |
1823 | */ | |
1824 | iterator | |
1825 | erase(__const_iterator __position) | |
1826 | { | |
1827 | _GLIBCXX_DEBUG_PEDASSERT(__position >= begin() | |
1828 | && __position < end()); | |
1829 | const size_type __pos = __position - begin(); | |
1830 | this->_M_erase(__pos, size_type(1)); | |
1831 | return iterator(_M_data() + __pos); | |
1832 | } | |
1833 | ||
1834 | /** | |
1835 | * @brief Remove a range of characters. | |
1836 | * @param __first Iterator referencing the first character to remove. | |
1837 | * @param __last Iterator referencing the end of the range. | |
1838 | * @return Iterator referencing location of first after removal. | |
1839 | * | |
1840 | * Removes the characters in the range [first,last) from this string. | |
1841 | * The value of the string doesn't change if an error is thrown. | |
1842 | */ | |
1843 | iterator | |
1844 | erase(__const_iterator __first, __const_iterator __last) | |
1845 | { | |
1846 | _GLIBCXX_DEBUG_PEDASSERT(__first >= begin() && __first <= __last | |
1847 | && __last <= end()); | |
1848 | const size_type __pos = __first - begin(); | |
31a75284 | 1849 | if (__last == end()) |
1850 | this->_M_set_length(__pos); | |
1851 | else | |
1852 | this->_M_erase(__pos, __last - __first); | |
63f54259 | 1853 | return iterator(this->_M_data() + __pos); |
1854 | } | |
1855 | ||
1856 | #if __cplusplus >= 201103L | |
1857 | /** | |
1858 | * @brief Remove the last character. | |
1859 | * | |
1860 | * The string must be non-empty. | |
1861 | */ | |
1862 | void | |
1863 | pop_back() noexcept | |
ffff0e95 | 1864 | { |
6b5e6f09 | 1865 | __glibcxx_assert(!empty()); |
ffff0e95 | 1866 | _M_erase(size() - 1, 1); |
1867 | } | |
63f54259 | 1868 | #endif // C++11 |
1869 | ||
1870 | /** | |
1871 | * @brief Replace characters with value from another string. | |
1872 | * @param __pos Index of first character to replace. | |
1873 | * @param __n Number of characters to be replaced. | |
1874 | * @param __str String to insert. | |
1875 | * @return Reference to this string. | |
1876 | * @throw std::out_of_range If @a pos is beyond the end of this | |
1877 | * string. | |
1878 | * @throw std::length_error If new length exceeds @c max_size(). | |
1879 | * | |
1880 | * Removes the characters in the range [__pos,__pos+__n) from | |
1881 | * this string. In place, the value of @a __str is inserted. | |
1882 | * If @a __pos is beyond end of string, out_of_range is thrown. | |
1883 | * If the length of the result exceeds max_size(), length_error | |
1884 | * is thrown. The value of the string doesn't change if an | |
1885 | * error is thrown. | |
1886 | */ | |
1887 | basic_string& | |
1888 | replace(size_type __pos, size_type __n, const basic_string& __str) | |
e4416257 | 1889 | { return this->replace(__pos, __n, __str._M_data(), __str.size()); } |
63f54259 | 1890 | |
1891 | /** | |
1892 | * @brief Replace characters with value from another string. | |
1893 | * @param __pos1 Index of first character to replace. | |
1894 | * @param __n1 Number of characters to be replaced. | |
1895 | * @param __str String to insert. | |
1896 | * @param __pos2 Index of first character of str to use. | |
1897 | * @param __n2 Number of characters from str to use. | |
1898 | * @return Reference to this string. | |
1899 | * @throw std::out_of_range If @a __pos1 > size() or @a __pos2 > | |
1900 | * __str.size(). | |
1901 | * @throw std::length_error If new length exceeds @c max_size(). | |
1902 | * | |
1903 | * Removes the characters in the range [__pos1,__pos1 + n) from this | |
1904 | * string. In place, the value of @a __str is inserted. If @a __pos is | |
1905 | * beyond end of string, out_of_range is thrown. If the length of the | |
1906 | * result exceeds max_size(), length_error is thrown. The value of the | |
1907 | * string doesn't change if an error is thrown. | |
1908 | */ | |
1909 | basic_string& | |
1910 | replace(size_type __pos1, size_type __n1, const basic_string& __str, | |
cf3c455b | 1911 | size_type __pos2, size_type __n2 = npos) |
e4416257 | 1912 | { return this->replace(__pos1, __n1, __str._M_data() |
63f54259 | 1913 | + __str._M_check(__pos2, "basic_string::replace"), |
1914 | __str._M_limit(__pos2, __n2)); } | |
1915 | ||
1916 | /** | |
1917 | * @brief Replace characters with value of a C substring. | |
1918 | * @param __pos Index of first character to replace. | |
1919 | * @param __n1 Number of characters to be replaced. | |
1920 | * @param __s C string to insert. | |
1921 | * @param __n2 Number of characters from @a s to use. | |
1922 | * @return Reference to this string. | |
1923 | * @throw std::out_of_range If @a pos1 > size(). | |
1924 | * @throw std::length_error If new length exceeds @c max_size(). | |
1925 | * | |
1926 | * Removes the characters in the range [__pos,__pos + __n1) | |
1927 | * from this string. In place, the first @a __n2 characters of | |
1928 | * @a __s are inserted, or all of @a __s if @a __n2 is too large. If | |
1929 | * @a __pos is beyond end of string, out_of_range is thrown. If | |
1930 | * the length of result exceeds max_size(), length_error is | |
1931 | * thrown. The value of the string doesn't change if an error | |
1932 | * is thrown. | |
1933 | */ | |
1934 | basic_string& | |
1935 | replace(size_type __pos, size_type __n1, const _CharT* __s, | |
1936 | size_type __n2) | |
1937 | { | |
1938 | __glibcxx_requires_string_len(__s, __n2); | |
1939 | return _M_replace(_M_check(__pos, "basic_string::replace"), | |
1940 | _M_limit(__pos, __n1), __s, __n2); | |
1941 | } | |
1942 | ||
1943 | /** | |
1944 | * @brief Replace characters with value of a C string. | |
1945 | * @param __pos Index of first character to replace. | |
1946 | * @param __n1 Number of characters to be replaced. | |
1947 | * @param __s C string to insert. | |
1948 | * @return Reference to this string. | |
1949 | * @throw std::out_of_range If @a pos > size(). | |
1950 | * @throw std::length_error If new length exceeds @c max_size(). | |
1951 | * | |
1952 | * Removes the characters in the range [__pos,__pos + __n1) | |
1953 | * from this string. In place, the characters of @a __s are | |
1954 | * inserted. If @a __pos is beyond end of string, out_of_range | |
1955 | * is thrown. If the length of result exceeds max_size(), | |
1956 | * length_error is thrown. The value of the string doesn't | |
1957 | * change if an error is thrown. | |
1958 | */ | |
1959 | basic_string& | |
1960 | replace(size_type __pos, size_type __n1, const _CharT* __s) | |
1961 | { | |
1962 | __glibcxx_requires_string(__s); | |
1963 | return this->replace(__pos, __n1, __s, traits_type::length(__s)); | |
1964 | } | |
1965 | ||
1966 | /** | |
1967 | * @brief Replace characters with multiple characters. | |
1968 | * @param __pos Index of first character to replace. | |
1969 | * @param __n1 Number of characters to be replaced. | |
1970 | * @param __n2 Number of characters to insert. | |
1971 | * @param __c Character to insert. | |
1972 | * @return Reference to this string. | |
1973 | * @throw std::out_of_range If @a __pos > size(). | |
1974 | * @throw std::length_error If new length exceeds @c max_size(). | |
1975 | * | |
1976 | * Removes the characters in the range [pos,pos + n1) from this | |
1977 | * string. In place, @a __n2 copies of @a __c are inserted. | |
1978 | * If @a __pos is beyond end of string, out_of_range is thrown. | |
1979 | * If the length of result exceeds max_size(), length_error is | |
1980 | * thrown. The value of the string doesn't change if an error | |
1981 | * is thrown. | |
1982 | */ | |
1983 | basic_string& | |
1984 | replace(size_type __pos, size_type __n1, size_type __n2, _CharT __c) | |
1985 | { return _M_replace_aux(_M_check(__pos, "basic_string::replace"), | |
1986 | _M_limit(__pos, __n1), __n2, __c); } | |
1987 | ||
1988 | /** | |
1989 | * @brief Replace range of characters with string. | |
1990 | * @param __i1 Iterator referencing start of range to replace. | |
1991 | * @param __i2 Iterator referencing end of range to replace. | |
1992 | * @param __str String value to insert. | |
1993 | * @return Reference to this string. | |
1994 | * @throw std::length_error If new length exceeds @c max_size(). | |
1995 | * | |
1996 | * Removes the characters in the range [__i1,__i2). In place, | |
1997 | * the value of @a __str is inserted. If the length of result | |
1998 | * exceeds max_size(), length_error is thrown. The value of | |
1999 | * the string doesn't change if an error is thrown. | |
2000 | */ | |
2001 | basic_string& | |
2002 | replace(__const_iterator __i1, __const_iterator __i2, | |
2003 | const basic_string& __str) | |
e4416257 | 2004 | { return this->replace(__i1, __i2, __str._M_data(), __str.size()); } |
63f54259 | 2005 | |
2006 | /** | |
2007 | * @brief Replace range of characters with C substring. | |
2008 | * @param __i1 Iterator referencing start of range to replace. | |
2009 | * @param __i2 Iterator referencing end of range to replace. | |
2010 | * @param __s C string value to insert. | |
2011 | * @param __n Number of characters from s to insert. | |
2012 | * @return Reference to this string. | |
2013 | * @throw std::length_error If new length exceeds @c max_size(). | |
2014 | * | |
2015 | * Removes the characters in the range [__i1,__i2). In place, | |
2016 | * the first @a __n characters of @a __s are inserted. If the | |
2017 | * length of result exceeds max_size(), length_error is thrown. | |
2018 | * The value of the string doesn't change if an error is | |
2019 | * thrown. | |
2020 | */ | |
2021 | basic_string& | |
2022 | replace(__const_iterator __i1, __const_iterator __i2, | |
2023 | const _CharT* __s, size_type __n) | |
2024 | { | |
2025 | _GLIBCXX_DEBUG_PEDASSERT(begin() <= __i1 && __i1 <= __i2 | |
2026 | && __i2 <= end()); | |
2027 | return this->replace(__i1 - begin(), __i2 - __i1, __s, __n); | |
2028 | } | |
2029 | ||
2030 | /** | |
2031 | * @brief Replace range of characters with C string. | |
2032 | * @param __i1 Iterator referencing start of range to replace. | |
2033 | * @param __i2 Iterator referencing end of range to replace. | |
2034 | * @param __s C string value to insert. | |
2035 | * @return Reference to this string. | |
2036 | * @throw std::length_error If new length exceeds @c max_size(). | |
2037 | * | |
2038 | * Removes the characters in the range [__i1,__i2). In place, | |
2039 | * the characters of @a __s are inserted. If the length of | |
2040 | * result exceeds max_size(), length_error is thrown. The | |
2041 | * value of the string doesn't change if an error is thrown. | |
2042 | */ | |
2043 | basic_string& | |
2044 | replace(__const_iterator __i1, __const_iterator __i2, const _CharT* __s) | |
2045 | { | |
2046 | __glibcxx_requires_string(__s); | |
2047 | return this->replace(__i1, __i2, __s, traits_type::length(__s)); | |
2048 | } | |
2049 | ||
2050 | /** | |
2051 | * @brief Replace range of characters with multiple characters | |
2052 | * @param __i1 Iterator referencing start of range to replace. | |
2053 | * @param __i2 Iterator referencing end of range to replace. | |
2054 | * @param __n Number of characters to insert. | |
2055 | * @param __c Character 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 | * @a __n copies of @a __c 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, size_type __n, | |
2066 | _CharT __c) | |
2067 | { | |
2068 | _GLIBCXX_DEBUG_PEDASSERT(begin() <= __i1 && __i1 <= __i2 | |
2069 | && __i2 <= end()); | |
2070 | return _M_replace_aux(__i1 - begin(), __i2 - __i1, __n, __c); | |
2071 | } | |
2072 | ||
2073 | /** | |
2074 | * @brief Replace range of characters with range. | |
2075 | * @param __i1 Iterator referencing start of range to replace. | |
2076 | * @param __i2 Iterator referencing end of range to replace. | |
2077 | * @param __k1 Iterator referencing start of range to insert. | |
2078 | * @param __k2 Iterator referencing end of range to insert. | |
2079 | * @return Reference to this string. | |
2080 | * @throw std::length_error If new length exceeds @c max_size(). | |
2081 | * | |
2082 | * Removes the characters in the range [__i1,__i2). In place, | |
2083 | * characters in the range [__k1,__k2) are inserted. If the | |
2084 | * length of result exceeds max_size(), length_error is thrown. | |
2085 | * The value of the string doesn't change if an error is | |
2086 | * thrown. | |
2087 | */ | |
2088 | #if __cplusplus >= 201103L | |
2089 | template<class _InputIterator, | |
2090 | typename = std::_RequireInputIter<_InputIterator>> | |
2091 | basic_string& | |
2092 | replace(const_iterator __i1, const_iterator __i2, | |
2093 | _InputIterator __k1, _InputIterator __k2) | |
2094 | { | |
2095 | _GLIBCXX_DEBUG_PEDASSERT(begin() <= __i1 && __i1 <= __i2 | |
2096 | && __i2 <= end()); | |
2097 | __glibcxx_requires_valid_range(__k1, __k2); | |
2098 | return this->_M_replace_dispatch(__i1, __i2, __k1, __k2, | |
2099 | std::__false_type()); | |
2100 | } | |
2101 | #else | |
2102 | template<class _InputIterator> | |
2103 | #ifdef _GLIBCXX_DISAMBIGUATE_REPLACE_INST | |
2104 | typename __enable_if_not_native_iterator<_InputIterator>::__type | |
2105 | #else | |
2106 | basic_string& | |
2107 | #endif | |
2108 | replace(iterator __i1, iterator __i2, | |
2109 | _InputIterator __k1, _InputIterator __k2) | |
2110 | { | |
2111 | _GLIBCXX_DEBUG_PEDASSERT(begin() <= __i1 && __i1 <= __i2 | |
2112 | && __i2 <= end()); | |
2113 | __glibcxx_requires_valid_range(__k1, __k2); | |
2114 | typedef typename std::__is_integer<_InputIterator>::__type _Integral; | |
2115 | return _M_replace_dispatch(__i1, __i2, __k1, __k2, _Integral()); | |
2116 | } | |
2117 | #endif | |
2118 | ||
2119 | // Specializations for the common case of pointer and iterator: | |
2120 | // useful to avoid the overhead of temporary buffering in _M_replace. | |
2121 | basic_string& | |
2122 | replace(__const_iterator __i1, __const_iterator __i2, | |
2123 | _CharT* __k1, _CharT* __k2) | |
2124 | { | |
2125 | _GLIBCXX_DEBUG_PEDASSERT(begin() <= __i1 && __i1 <= __i2 | |
2126 | && __i2 <= end()); | |
2127 | __glibcxx_requires_valid_range(__k1, __k2); | |
2128 | return this->replace(__i1 - begin(), __i2 - __i1, | |
2129 | __k1, __k2 - __k1); | |
2130 | } | |
2131 | ||
2132 | basic_string& | |
2133 | replace(__const_iterator __i1, __const_iterator __i2, | |
2134 | const _CharT* __k1, const _CharT* __k2) | |
2135 | { | |
2136 | _GLIBCXX_DEBUG_PEDASSERT(begin() <= __i1 && __i1 <= __i2 | |
2137 | && __i2 <= end()); | |
2138 | __glibcxx_requires_valid_range(__k1, __k2); | |
2139 | return this->replace(__i1 - begin(), __i2 - __i1, | |
2140 | __k1, __k2 - __k1); | |
2141 | } | |
2142 | ||
2143 | basic_string& | |
2144 | replace(__const_iterator __i1, __const_iterator __i2, | |
2145 | iterator __k1, iterator __k2) | |
2146 | { | |
2147 | _GLIBCXX_DEBUG_PEDASSERT(begin() <= __i1 && __i1 <= __i2 | |
2148 | && __i2 <= end()); | |
2149 | __glibcxx_requires_valid_range(__k1, __k2); | |
2150 | return this->replace(__i1 - begin(), __i2 - __i1, | |
2151 | __k1.base(), __k2 - __k1); | |
2152 | } | |
2153 | ||
2154 | basic_string& | |
2155 | replace(__const_iterator __i1, __const_iterator __i2, | |
2156 | const_iterator __k1, const_iterator __k2) | |
2157 | { | |
2158 | _GLIBCXX_DEBUG_PEDASSERT(begin() <= __i1 && __i1 <= __i2 | |
2159 | && __i2 <= end()); | |
2160 | __glibcxx_requires_valid_range(__k1, __k2); | |
2161 | return this->replace(__i1 - begin(), __i2 - __i1, | |
2162 | __k1.base(), __k2 - __k1); | |
2163 | } | |
2164 | ||
2165 | #if __cplusplus >= 201103L | |
2166 | /** | |
2167 | * @brief Replace range of characters with initializer_list. | |
2168 | * @param __i1 Iterator referencing start of range to replace. | |
2169 | * @param __i2 Iterator referencing end of range to replace. | |
2170 | * @param __l The initializer_list of characters to insert. | |
2171 | * @return Reference to this string. | |
2172 | * @throw std::length_error If new length exceeds @c max_size(). | |
2173 | * | |
2174 | * Removes the characters in the range [__i1,__i2). In place, | |
2175 | * characters in the range [__k1,__k2) are inserted. If the | |
2176 | * length of result exceeds max_size(), length_error is thrown. | |
2177 | * The value of the string doesn't change if an error is | |
2178 | * thrown. | |
2179 | */ | |
2180 | basic_string& replace(const_iterator __i1, const_iterator __i2, | |
2181 | initializer_list<_CharT> __l) | |
58dbd955 | 2182 | { return this->replace(__i1, __i2, __l.begin(), __l.size()); } |
63f54259 | 2183 | #endif // C++11 |
2184 | ||
98185b9f | 2185 | #if __cplusplus >= 201703L |
76d7f2c2 | 2186 | /** |
2187 | * @brief Replace range of characters with string_view. | |
2188 | * @param __pos The position to replace at. | |
2189 | * @param __n The number of characters to replace. | |
7c78f2e6 | 2190 | * @param __svt The object convertible to string_view to insert. |
76d7f2c2 | 2191 | * @return Reference to this string. |
2192 | */ | |
7c78f2e6 | 2193 | template<typename _Tp> |
2194 | _If_sv<_Tp, basic_string&> | |
2195 | replace(size_type __pos, size_type __n, const _Tp& __svt) | |
2196 | { | |
2197 | __sv_type __sv = __svt; | |
2198 | return this->replace(__pos, __n, __sv.data(), __sv.size()); | |
2199 | } | |
76d7f2c2 | 2200 | |
2201 | /** | |
2202 | * @brief Replace range of characters with string_view. | |
2203 | * @param __pos1 The position to replace at. | |
2204 | * @param __n1 The number of characters to replace. | |
7c78f2e6 | 2205 | * @param __svt The object convertible to string_view to insert from. |
76d7f2c2 | 2206 | * @param __pos2 The position in the string_view to insert from. |
2207 | * @param __n2 The number of characters to insert. | |
2208 | * @return Reference to this string. | |
2209 | */ | |
7c78f2e6 | 2210 | template<typename _Tp> |
7d475d13 | 2211 | _If_sv<_Tp, basic_string&> |
2212 | replace(size_type __pos1, size_type __n1, const _Tp& __svt, | |
2213 | size_type __pos2, size_type __n2 = npos) | |
2214 | { | |
2215 | __sv_type __sv = __svt; | |
809f1d63 | 2216 | return this->replace(__pos1, __n1, |
2217 | __sv.data() | |
2218 | + std::__sv_check(__sv.size(), __pos2, "basic_string::replace"), | |
2219 | std::__sv_limit(__sv.size(), __pos2, __n2)); | |
7d475d13 | 2220 | } |
76d7f2c2 | 2221 | |
2222 | /** | |
2223 | * @brief Replace range of characters with string_view. | |
2224 | * @param __i1 An iterator referencing the start position | |
2225 | to replace at. | |
2226 | * @param __i2 An iterator referencing the end position | |
2227 | for the replace. | |
7c78f2e6 | 2228 | * @param __svt The object convertible to string_view to insert from. |
76d7f2c2 | 2229 | * @return Reference to this string. |
2230 | */ | |
7c78f2e6 | 2231 | template<typename _Tp> |
2232 | _If_sv<_Tp, basic_string&> | |
2233 | replace(const_iterator __i1, const_iterator __i2, const _Tp& __svt) | |
2234 | { | |
2235 | __sv_type __sv = __svt; | |
2236 | return this->replace(__i1 - begin(), __i2 - __i1, __sv); | |
2237 | } | |
76d7f2c2 | 2238 | #endif // C++17 |
2239 | ||
63f54259 | 2240 | private: |
2241 | template<class _Integer> | |
2242 | basic_string& | |
2243 | _M_replace_dispatch(const_iterator __i1, const_iterator __i2, | |
2244 | _Integer __n, _Integer __val, __true_type) | |
2245 | { return _M_replace_aux(__i1 - begin(), __i2 - __i1, __n, __val); } | |
2246 | ||
2247 | template<class _InputIterator> | |
2248 | basic_string& | |
2249 | _M_replace_dispatch(const_iterator __i1, const_iterator __i2, | |
2250 | _InputIterator __k1, _InputIterator __k2, | |
2251 | __false_type); | |
2252 | ||
2253 | basic_string& | |
2254 | _M_replace_aux(size_type __pos1, size_type __n1, size_type __n2, | |
2255 | _CharT __c); | |
2256 | ||
2257 | basic_string& | |
2258 | _M_replace(size_type __pos, size_type __len1, const _CharT* __s, | |
2259 | const size_type __len2); | |
2260 | ||
2261 | basic_string& | |
2262 | _M_append(const _CharT* __s, size_type __n); | |
2263 | ||
2264 | public: | |
2265 | ||
2266 | /** | |
2267 | * @brief Copy substring into C string. | |
2268 | * @param __s C string to copy value into. | |
2269 | * @param __n Number of characters to copy. | |
2270 | * @param __pos Index of first character to copy. | |
2271 | * @return Number of characters actually copied | |
2272 | * @throw std::out_of_range If __pos > size(). | |
2273 | * | |
2274 | * Copies up to @a __n characters starting at @a __pos into the | |
2275 | * C string @a __s. If @a __pos is %greater than size(), | |
2276 | * out_of_range is thrown. | |
2277 | */ | |
2278 | size_type | |
2279 | copy(_CharT* __s, size_type __n, size_type __pos = 0) const; | |
2280 | ||
2281 | /** | |
2282 | * @brief Swap contents with another string. | |
2283 | * @param __s String to swap with. | |
2284 | * | |
2285 | * Exchanges the contents of this string with that of @a __s in constant | |
2286 | * time. | |
2287 | */ | |
2288 | void | |
2289 | swap(basic_string& __s) _GLIBCXX_NOEXCEPT; | |
2290 | ||
2291 | // String operations: | |
2292 | /** | |
2293 | * @brief Return const pointer to null-terminated contents. | |
2294 | * | |
2295 | * This is a handle to internal data. Do not modify or dire things may | |
2296 | * happen. | |
2297 | */ | |
2298 | const _CharT* | |
2299 | c_str() const _GLIBCXX_NOEXCEPT | |
e4416257 | 2300 | { return _M_data(); } |
63f54259 | 2301 | |
2302 | /** | |
2303 | * @brief Return const pointer to contents. | |
2304 | * | |
bd17928e | 2305 | * This is a pointer to internal data. It is undefined to modify |
2306 | * the contents through the returned pointer. To get a pointer that | |
2307 | * allows modifying the contents use @c &str[0] instead, | |
2308 | * (or in C++17 the non-const @c str.data() overload). | |
63f54259 | 2309 | */ |
2310 | const _CharT* | |
2311 | data() const _GLIBCXX_NOEXCEPT | |
e4416257 | 2312 | { return _M_data(); } |
63f54259 | 2313 | |
98185b9f | 2314 | #if __cplusplus >= 201703L |
bd17928e | 2315 | /** |
2316 | * @brief Return non-const pointer to contents. | |
2317 | * | |
2318 | * This is a pointer to the character sequence held by the string. | |
2319 | * Modifying the characters in the sequence is allowed. | |
2320 | */ | |
2321 | _CharT* | |
2322 | data() noexcept | |
2323 | { return _M_data(); } | |
2324 | #endif | |
2325 | ||
63f54259 | 2326 | /** |
2327 | * @brief Return copy of allocator used to construct this string. | |
2328 | */ | |
2329 | allocator_type | |
2330 | get_allocator() const _GLIBCXX_NOEXCEPT | |
2331 | { return _M_get_allocator(); } | |
2332 | ||
2333 | /** | |
2334 | * @brief Find position of a C substring. | |
2335 | * @param __s C string to locate. | |
2336 | * @param __pos Index of character to search from. | |
2337 | * @param __n Number of characters from @a s to search for. | |
2338 | * @return Index of start of first occurrence. | |
2339 | * | |
2340 | * Starting from @a __pos, searches forward for the first @a | |
2341 | * __n characters in @a __s within this string. If found, | |
2342 | * returns the index where it begins. If not found, returns | |
2343 | * npos. | |
2344 | */ | |
2345 | size_type | |
5b479470 | 2346 | find(const _CharT* __s, size_type __pos, size_type __n) const |
2347 | _GLIBCXX_NOEXCEPT; | |
63f54259 | 2348 | |
2349 | /** | |
2350 | * @brief Find position of a string. | |
2351 | * @param __str String to locate. | |
2352 | * @param __pos Index of character to search from (default 0). | |
2353 | * @return Index of start of first occurrence. | |
2354 | * | |
2355 | * Starting from @a __pos, searches forward for value of @a __str within | |
2356 | * this string. If found, returns the index where it begins. If not | |
2357 | * found, returns npos. | |
2358 | */ | |
2359 | size_type | |
2360 | find(const basic_string& __str, size_type __pos = 0) const | |
5b479470 | 2361 | _GLIBCXX_NOEXCEPT |
63f54259 | 2362 | { return this->find(__str.data(), __pos, __str.size()); } |
2363 | ||
98185b9f | 2364 | #if __cplusplus >= 201703L |
76d7f2c2 | 2365 | /** |
2366 | * @brief Find position of a string_view. | |
7c78f2e6 | 2367 | * @param __svt The object convertible to string_view to locate. |
76d7f2c2 | 2368 | * @param __pos Index of character to search from (default 0). |
2369 | * @return Index of start of first occurrence. | |
2370 | */ | |
7c78f2e6 | 2371 | template<typename _Tp> |
2372 | _If_sv<_Tp, size_type> | |
2373 | find(const _Tp& __svt, size_type __pos = 0) const | |
2374 | noexcept(is_same<_Tp, __sv_type>::value) | |
2375 | { | |
2376 | __sv_type __sv = __svt; | |
2377 | return this->find(__sv.data(), __pos, __sv.size()); | |
2378 | } | |
76d7f2c2 | 2379 | #endif // C++17 |
2380 | ||
63f54259 | 2381 | /** |
2382 | * @brief Find position of a C string. | |
2383 | * @param __s C string to locate. | |
2384 | * @param __pos Index of character to search from (default 0). | |
2385 | * @return Index of start of first occurrence. | |
2386 | * | |
2387 | * Starting from @a __pos, searches forward for the value of @a | |
2388 | * __s within this string. If found, returns the index where | |
2389 | * it begins. If not found, returns npos. | |
2390 | */ | |
2391 | size_type | |
5b479470 | 2392 | find(const _CharT* __s, size_type __pos = 0) const _GLIBCXX_NOEXCEPT |
63f54259 | 2393 | { |
2394 | __glibcxx_requires_string(__s); | |
2395 | return this->find(__s, __pos, traits_type::length(__s)); | |
2396 | } | |
2397 | ||
2398 | /** | |
2399 | * @brief Find position of a character. | |
2400 | * @param __c Character to locate. | |
2401 | * @param __pos Index of character to search from (default 0). | |
2402 | * @return Index of first occurrence. | |
2403 | * | |
2404 | * Starting from @a __pos, searches forward for @a __c within | |
2405 | * this string. If found, returns the index where it was | |
2406 | * found. If not found, returns npos. | |
2407 | */ | |
2408 | size_type | |
2409 | find(_CharT __c, size_type __pos = 0) const _GLIBCXX_NOEXCEPT; | |
2410 | ||
2411 | /** | |
2412 | * @brief Find last position of a string. | |
2413 | * @param __str String to locate. | |
2414 | * @param __pos Index of character to search back from (default end). | |
2415 | * @return Index of start of last occurrence. | |
2416 | * | |
2417 | * Starting from @a __pos, searches backward for value of @a | |
2418 | * __str within this string. If found, returns the index where | |
2419 | * it begins. If not found, returns npos. | |
2420 | */ | |
2421 | size_type | |
2422 | rfind(const basic_string& __str, size_type __pos = npos) const | |
5b479470 | 2423 | _GLIBCXX_NOEXCEPT |
63f54259 | 2424 | { return this->rfind(__str.data(), __pos, __str.size()); } |
2425 | ||
98185b9f | 2426 | #if __cplusplus >= 201703L |
76d7f2c2 | 2427 | /** |
2428 | * @brief Find last position of a string_view. | |
7c78f2e6 | 2429 | * @param __svt The object convertible to string_view to locate. |
76d7f2c2 | 2430 | * @param __pos Index of character to search back from (default end). |
2431 | * @return Index of start of last occurrence. | |
2432 | */ | |
7c78f2e6 | 2433 | template<typename _Tp> |
2434 | _If_sv<_Tp, size_type> | |
2435 | rfind(const _Tp& __svt, size_type __pos = npos) const | |
2436 | noexcept(is_same<_Tp, __sv_type>::value) | |
2437 | { | |
2438 | __sv_type __sv = __svt; | |
2439 | return this->rfind(__sv.data(), __pos, __sv.size()); | |
2440 | } | |
76d7f2c2 | 2441 | #endif // C++17 |
2442 | ||
63f54259 | 2443 | /** |
2444 | * @brief Find last position of a C substring. | |
2445 | * @param __s C string to locate. | |
2446 | * @param __pos Index of character to search back from. | |
2447 | * @param __n Number of characters from s to search for. | |
2448 | * @return Index of start of last occurrence. | |
2449 | * | |
2450 | * Starting from @a __pos, searches backward for the first @a | |
2451 | * __n characters in @a __s within this string. If found, | |
2452 | * returns the index where it begins. If not found, returns | |
2453 | * npos. | |
2454 | */ | |
2455 | size_type | |
5b479470 | 2456 | rfind(const _CharT* __s, size_type __pos, size_type __n) const |
2457 | _GLIBCXX_NOEXCEPT; | |
63f54259 | 2458 | |
2459 | /** | |
2460 | * @brief Find last position of a C string. | |
2461 | * @param __s C string to locate. | |
2462 | * @param __pos Index of character to start search at (default end). | |
2463 | * @return Index of start of last occurrence. | |
2464 | * | |
2465 | * Starting from @a __pos, searches backward for the value of | |
2466 | * @a __s within this string. If found, returns the index | |
2467 | * where it begins. If not found, returns npos. | |
2468 | */ | |
2469 | size_type | |
2470 | rfind(const _CharT* __s, size_type __pos = npos) const | |
2471 | { | |
2472 | __glibcxx_requires_string(__s); | |
2473 | return this->rfind(__s, __pos, traits_type::length(__s)); | |
2474 | } | |
2475 | ||
2476 | /** | |
2477 | * @brief Find last position of a character. | |
2478 | * @param __c Character to locate. | |
2479 | * @param __pos Index of character to search back from (default end). | |
2480 | * @return Index of last occurrence. | |
2481 | * | |
2482 | * Starting from @a __pos, searches backward for @a __c within | |
2483 | * this string. If found, returns the index where it was | |
2484 | * found. If not found, returns npos. | |
2485 | */ | |
2486 | size_type | |
2487 | rfind(_CharT __c, size_type __pos = npos) const _GLIBCXX_NOEXCEPT; | |
2488 | ||
2489 | /** | |
2490 | * @brief Find position of a character of string. | |
2491 | * @param __str String containing characters to locate. | |
2492 | * @param __pos Index of character to search from (default 0). | |
2493 | * @return Index of first occurrence. | |
2494 | * | |
2495 | * Starting from @a __pos, searches forward for one of the | |
2496 | * characters of @a __str within this string. If found, | |
2497 | * returns the index where it was found. If not found, returns | |
2498 | * npos. | |
2499 | */ | |
2500 | size_type | |
2501 | find_first_of(const basic_string& __str, size_type __pos = 0) const | |
5b479470 | 2502 | _GLIBCXX_NOEXCEPT |
63f54259 | 2503 | { return this->find_first_of(__str.data(), __pos, __str.size()); } |
2504 | ||
98185b9f | 2505 | #if __cplusplus >= 201703L |
76d7f2c2 | 2506 | /** |
2507 | * @brief Find position of a character of a string_view. | |
7c78f2e6 | 2508 | * @param __svt An object convertible to string_view containing |
2509 | * characters to locate. | |
76d7f2c2 | 2510 | * @param __pos Index of character to search from (default 0). |
2511 | * @return Index of first occurrence. | |
2512 | */ | |
7c78f2e6 | 2513 | template<typename _Tp> |
2514 | _If_sv<_Tp, size_type> | |
2515 | find_first_of(const _Tp& __svt, size_type __pos = 0) const | |
2516 | noexcept(is_same<_Tp, __sv_type>::value) | |
2517 | { | |
2518 | __sv_type __sv = __svt; | |
2519 | return this->find_first_of(__sv.data(), __pos, __sv.size()); | |
2520 | } | |
76d7f2c2 | 2521 | #endif // C++17 |
2522 | ||
63f54259 | 2523 | /** |
2524 | * @brief Find position of a character of C substring. | |
2525 | * @param __s String containing characters to locate. | |
2526 | * @param __pos Index of character to search from. | |
2527 | * @param __n Number of characters from s to search for. | |
2528 | * @return Index of first occurrence. | |
2529 | * | |
2530 | * Starting from @a __pos, searches forward for one of the | |
2531 | * first @a __n characters of @a __s within this string. If | |
2532 | * found, returns the index where it was found. If not found, | |
2533 | * returns npos. | |
2534 | */ | |
2535 | size_type | |
5b479470 | 2536 | find_first_of(const _CharT* __s, size_type __pos, size_type __n) const |
2537 | _GLIBCXX_NOEXCEPT; | |
63f54259 | 2538 | |
2539 | /** | |
2540 | * @brief Find position of a character of C string. | |
2541 | * @param __s String containing characters to locate. | |
2542 | * @param __pos Index of character to search from (default 0). | |
2543 | * @return Index of first occurrence. | |
2544 | * | |
2545 | * Starting from @a __pos, searches forward for one of the | |
2546 | * characters of @a __s within this string. If found, returns | |
2547 | * the index where it was found. If not found, returns npos. | |
2548 | */ | |
2549 | size_type | |
2550 | find_first_of(const _CharT* __s, size_type __pos = 0) const | |
5b479470 | 2551 | _GLIBCXX_NOEXCEPT |
63f54259 | 2552 | { |
2553 | __glibcxx_requires_string(__s); | |
2554 | return this->find_first_of(__s, __pos, traits_type::length(__s)); | |
2555 | } | |
2556 | ||
2557 | /** | |
2558 | * @brief Find position of a character. | |
2559 | * @param __c Character to locate. | |
2560 | * @param __pos Index of character to search from (default 0). | |
2561 | * @return Index of first occurrence. | |
2562 | * | |
2563 | * Starting from @a __pos, searches forward for the character | |
2564 | * @a __c within this string. If found, returns the index | |
2565 | * where it was found. If not found, returns npos. | |
2566 | * | |
2567 | * Note: equivalent to find(__c, __pos). | |
2568 | */ | |
2569 | size_type | |
2570 | find_first_of(_CharT __c, size_type __pos = 0) const _GLIBCXX_NOEXCEPT | |
2571 | { return this->find(__c, __pos); } | |
2572 | ||
2573 | /** | |
2574 | * @brief Find last position of a character of string. | |
2575 | * @param __str String containing characters to locate. | |
2576 | * @param __pos Index of character to search back from (default end). | |
2577 | * @return Index of last occurrence. | |
2578 | * | |
2579 | * Starting from @a __pos, searches backward for one of the | |
2580 | * characters of @a __str within this string. If found, | |
2581 | * returns the index where it was found. If not found, returns | |
2582 | * npos. | |
2583 | */ | |
2584 | size_type | |
2585 | find_last_of(const basic_string& __str, size_type __pos = npos) const | |
5b479470 | 2586 | _GLIBCXX_NOEXCEPT |
63f54259 | 2587 | { return this->find_last_of(__str.data(), __pos, __str.size()); } |
2588 | ||
98185b9f | 2589 | #if __cplusplus >= 201703L |
76d7f2c2 | 2590 | /** |
2591 | * @brief Find last position of a character of string. | |
7c78f2e6 | 2592 | * @param __svt An object convertible to string_view containing |
2593 | * characters to locate. | |
76d7f2c2 | 2594 | * @param __pos Index of character to search back from (default end). |
2595 | * @return Index of last occurrence. | |
2596 | */ | |
7c78f2e6 | 2597 | template<typename _Tp> |
2598 | _If_sv<_Tp, size_type> | |
2599 | find_last_of(const _Tp& __svt, size_type __pos = npos) const | |
2600 | noexcept(is_same<_Tp, __sv_type>::value) | |
2601 | { | |
2602 | __sv_type __sv = __svt; | |
2603 | return this->find_last_of(__sv.data(), __pos, __sv.size()); | |
2604 | } | |
76d7f2c2 | 2605 | #endif // C++17 |
2606 | ||
63f54259 | 2607 | /** |
2608 | * @brief Find last position of a character of C substring. | |
2609 | * @param __s C string containing characters to locate. | |
2610 | * @param __pos Index of character to search back from. | |
2611 | * @param __n Number of characters from s to search for. | |
2612 | * @return Index of last occurrence. | |
2613 | * | |
2614 | * Starting from @a __pos, searches backward for one of the | |
2615 | * first @a __n characters of @a __s within this string. If | |
2616 | * found, returns the index where it was found. If not found, | |
2617 | * returns npos. | |
2618 | */ | |
2619 | size_type | |
5b479470 | 2620 | find_last_of(const _CharT* __s, size_type __pos, size_type __n) const |
2621 | _GLIBCXX_NOEXCEPT; | |
63f54259 | 2622 | |
2623 | /** | |
2624 | * @brief Find last position of a character of C string. | |
2625 | * @param __s C string containing characters to locate. | |
2626 | * @param __pos Index of character to search back from (default end). | |
2627 | * @return Index of last occurrence. | |
2628 | * | |
2629 | * Starting from @a __pos, searches backward for one of the | |
2630 | * characters of @a __s within this string. If found, returns | |
2631 | * the index where it was found. If not found, returns npos. | |
2632 | */ | |
2633 | size_type | |
2634 | find_last_of(const _CharT* __s, size_type __pos = npos) const | |
5b479470 | 2635 | _GLIBCXX_NOEXCEPT |
63f54259 | 2636 | { |
2637 | __glibcxx_requires_string(__s); | |
2638 | return this->find_last_of(__s, __pos, traits_type::length(__s)); | |
2639 | } | |
2640 | ||
2641 | /** | |
2642 | * @brief Find last position of a character. | |
2643 | * @param __c Character to locate. | |
2644 | * @param __pos Index of character to search back from (default end). | |
2645 | * @return Index of last occurrence. | |
2646 | * | |
2647 | * Starting from @a __pos, searches backward for @a __c within | |
2648 | * this string. If found, returns the index where it was | |
2649 | * found. If not found, returns npos. | |
2650 | * | |
2651 | * Note: equivalent to rfind(__c, __pos). | |
2652 | */ | |
2653 | size_type | |
2654 | find_last_of(_CharT __c, size_type __pos = npos) const _GLIBCXX_NOEXCEPT | |
2655 | { return this->rfind(__c, __pos); } | |
2656 | ||
2657 | /** | |
2658 | * @brief Find position of a character not in string. | |
2659 | * @param __str String containing characters to avoid. | |
2660 | * @param __pos Index of character to search from (default 0). | |
2661 | * @return Index of first occurrence. | |
2662 | * | |
2663 | * Starting from @a __pos, searches forward for a character not contained | |
2664 | * in @a __str within this string. If found, returns the index where it | |
2665 | * was found. If not found, returns npos. | |
2666 | */ | |
2667 | size_type | |
2668 | find_first_not_of(const basic_string& __str, size_type __pos = 0) const | |
5b479470 | 2669 | _GLIBCXX_NOEXCEPT |
63f54259 | 2670 | { return this->find_first_not_of(__str.data(), __pos, __str.size()); } |
2671 | ||
98185b9f | 2672 | #if __cplusplus >= 201703L |
76d7f2c2 | 2673 | /** |
2674 | * @brief Find position of a character not in a string_view. | |
7c78f2e6 | 2675 | * @param __svt A object convertible to string_view containing |
2676 | * characters to avoid. | |
76d7f2c2 | 2677 | * @param __pos Index of character to search from (default 0). |
2678 | * @return Index of first occurrence. | |
2679 | */ | |
7c78f2e6 | 2680 | template<typename _Tp> |
2681 | _If_sv<_Tp, size_type> | |
2682 | find_first_not_of(const _Tp& __svt, size_type __pos = 0) const | |
2683 | noexcept(is_same<_Tp, __sv_type>::value) | |
2684 | { | |
2685 | __sv_type __sv = __svt; | |
2686 | return this->find_first_not_of(__sv.data(), __pos, __sv.size()); | |
2687 | } | |
76d7f2c2 | 2688 | #endif // C++17 |
2689 | ||
63f54259 | 2690 | /** |
2691 | * @brief Find position of a character not in C substring. | |
2692 | * @param __s C string containing characters to avoid. | |
2693 | * @param __pos Index of character to search from. | |
2694 | * @param __n Number of characters from __s to consider. | |
2695 | * @return Index of first occurrence. | |
2696 | * | |
2697 | * Starting from @a __pos, searches forward for a character not | |
2698 | * contained in the first @a __n characters of @a __s within | |
2699 | * this string. If found, returns the index where it was | |
2700 | * found. If not found, returns npos. | |
2701 | */ | |
2702 | size_type | |
2703 | find_first_not_of(const _CharT* __s, size_type __pos, | |
5b479470 | 2704 | size_type __n) const _GLIBCXX_NOEXCEPT; |
63f54259 | 2705 | |
2706 | /** | |
2707 | * @brief Find position of a character not in C string. | |
2708 | * @param __s C string containing characters to avoid. | |
2709 | * @param __pos Index of character to search from (default 0). | |
2710 | * @return Index of first occurrence. | |
2711 | * | |
2712 | * Starting from @a __pos, searches forward for a character not | |
2713 | * contained in @a __s within this string. If found, returns | |
2714 | * the index where it was found. If not found, returns npos. | |
2715 | */ | |
2716 | size_type | |
2717 | find_first_not_of(const _CharT* __s, size_type __pos = 0) const | |
5b479470 | 2718 | _GLIBCXX_NOEXCEPT |
63f54259 | 2719 | { |
2720 | __glibcxx_requires_string(__s); | |
2721 | return this->find_first_not_of(__s, __pos, traits_type::length(__s)); | |
2722 | } | |
2723 | ||
2724 | /** | |
2725 | * @brief Find position of a different character. | |
2726 | * @param __c Character to avoid. | |
2727 | * @param __pos Index of character to search from (default 0). | |
2728 | * @return Index of first occurrence. | |
2729 | * | |
2730 | * Starting from @a __pos, searches forward for a character | |
2731 | * other than @a __c within this string. If found, returns the | |
2732 | * index where it was found. If not found, returns npos. | |
2733 | */ | |
2734 | size_type | |
2735 | find_first_not_of(_CharT __c, size_type __pos = 0) const | |
5b479470 | 2736 | _GLIBCXX_NOEXCEPT; |
63f54259 | 2737 | |
2738 | /** | |
2739 | * @brief Find last position of a character not in string. | |
2740 | * @param __str String containing characters to avoid. | |
2741 | * @param __pos Index of character to search back from (default end). | |
2742 | * @return Index of last occurrence. | |
2743 | * | |
2744 | * Starting from @a __pos, searches backward for a character | |
2745 | * not contained in @a __str within this string. If found, | |
2746 | * returns the index where it was found. If not found, returns | |
2747 | * npos. | |
2748 | */ | |
2749 | size_type | |
2750 | find_last_not_of(const basic_string& __str, size_type __pos = npos) const | |
5b479470 | 2751 | _GLIBCXX_NOEXCEPT |
63f54259 | 2752 | { return this->find_last_not_of(__str.data(), __pos, __str.size()); } |
2753 | ||
98185b9f | 2754 | #if __cplusplus >= 201703L |
76d7f2c2 | 2755 | /** |
2756 | * @brief Find last position of a character not in a string_view. | |
7c78f2e6 | 2757 | * @param __svt An object convertible to string_view containing |
2758 | * characters to avoid. | |
76d7f2c2 | 2759 | * @param __pos Index of character to search back from (default end). |
2760 | * @return Index of last occurrence. | |
2761 | */ | |
7c78f2e6 | 2762 | template<typename _Tp> |
2763 | _If_sv<_Tp, size_type> | |
2764 | find_last_not_of(const _Tp& __svt, size_type __pos = npos) const | |
2765 | noexcept(is_same<_Tp, __sv_type>::value) | |
2766 | { | |
2767 | __sv_type __sv = __svt; | |
2768 | return this->find_last_not_of(__sv.data(), __pos, __sv.size()); | |
2769 | } | |
76d7f2c2 | 2770 | #endif // C++17 |
2771 | ||
63f54259 | 2772 | /** |
2773 | * @brief Find last position of a character not in C substring. | |
2774 | * @param __s C string containing characters to avoid. | |
2775 | * @param __pos Index of character to search back from. | |
2776 | * @param __n Number of characters from s to consider. | |
2777 | * @return Index of last occurrence. | |
2778 | * | |
2779 | * Starting from @a __pos, searches backward for a character not | |
2780 | * contained in the first @a __n characters of @a __s within this string. | |
2781 | * If found, returns the index where it was found. If not found, | |
2782 | * returns npos. | |
2783 | */ | |
2784 | size_type | |
2785 | find_last_not_of(const _CharT* __s, size_type __pos, | |
5b479470 | 2786 | size_type __n) const _GLIBCXX_NOEXCEPT; |
63f54259 | 2787 | /** |
2788 | * @brief Find last position of a character not in C string. | |
2789 | * @param __s C string containing characters to avoid. | |
2790 | * @param __pos Index of character to search back from (default end). | |
2791 | * @return Index of last occurrence. | |
2792 | * | |
2793 | * Starting from @a __pos, searches backward for a character | |
2794 | * not contained in @a __s within this string. If found, | |
2795 | * returns the index where it was found. If not found, returns | |
2796 | * npos. | |
2797 | */ | |
2798 | size_type | |
2799 | find_last_not_of(const _CharT* __s, size_type __pos = npos) const | |
5b479470 | 2800 | _GLIBCXX_NOEXCEPT |
63f54259 | 2801 | { |
2802 | __glibcxx_requires_string(__s); | |
2803 | return this->find_last_not_of(__s, __pos, traits_type::length(__s)); | |
2804 | } | |
2805 | ||
2806 | /** | |
2807 | * @brief Find last position of a different character. | |
2808 | * @param __c Character to avoid. | |
2809 | * @param __pos Index of character to search back from (default end). | |
2810 | * @return Index of last occurrence. | |
2811 | * | |
2812 | * Starting from @a __pos, searches backward for a character other than | |
2813 | * @a __c within this string. If found, returns the index where it was | |
2814 | * found. If not found, returns npos. | |
2815 | */ | |
2816 | size_type | |
2817 | find_last_not_of(_CharT __c, size_type __pos = npos) const | |
5b479470 | 2818 | _GLIBCXX_NOEXCEPT; |
63f54259 | 2819 | |
2820 | /** | |
2821 | * @brief Get a substring. | |
2822 | * @param __pos Index of first character (default 0). | |
2823 | * @param __n Number of characters in substring (default remainder). | |
2824 | * @return The new string. | |
2825 | * @throw std::out_of_range If __pos > size(). | |
2826 | * | |
2827 | * Construct and return a new string using the @a __n | |
2828 | * characters starting at @a __pos. If the string is too | |
2829 | * short, use the remainder of the characters. If @a __pos is | |
2830 | * beyond the end of the string, out_of_range is thrown. | |
2831 | */ | |
2832 | basic_string | |
2833 | substr(size_type __pos = 0, size_type __n = npos) const | |
2834 | { return basic_string(*this, | |
2835 | _M_check(__pos, "basic_string::substr"), __n); } | |
2836 | ||
2837 | /** | |
2838 | * @brief Compare to a string. | |
2839 | * @param __str String to compare against. | |
2840 | * @return Integer < 0, 0, or > 0. | |
2841 | * | |
2842 | * Returns an integer < 0 if this string is ordered before @a | |
2843 | * __str, 0 if their values are equivalent, or > 0 if this | |
2844 | * string is ordered after @a __str. Determines the effective | |
2845 | * length rlen of the strings to compare as the smallest of | |
2846 | * size() and str.size(). The function then compares the two | |
2847 | * strings by calling traits::compare(data(), str.data(),rlen). | |
2848 | * If the result of the comparison is nonzero returns it, | |
2849 | * otherwise the shorter one is ordered first. | |
2850 | */ | |
2851 | int | |
2852 | compare(const basic_string& __str) const | |
2853 | { | |
2854 | const size_type __size = this->size(); | |
2855 | const size_type __osize = __str.size(); | |
2856 | const size_type __len = std::min(__size, __osize); | |
2857 | ||
e4416257 | 2858 | int __r = traits_type::compare(_M_data(), __str.data(), __len); |
63f54259 | 2859 | if (!__r) |
2860 | __r = _S_compare(__size, __osize); | |
2861 | return __r; | |
2862 | } | |
2863 | ||
98185b9f | 2864 | #if __cplusplus >= 201703L |
76d7f2c2 | 2865 | /** |
2866 | * @brief Compare to a string_view. | |
7c78f2e6 | 2867 | * @param __svt An object convertible to string_view to compare against. |
76d7f2c2 | 2868 | * @return Integer < 0, 0, or > 0. |
2869 | */ | |
7c78f2e6 | 2870 | template<typename _Tp> |
2871 | _If_sv<_Tp, int> | |
2872 | compare(const _Tp& __svt) const | |
2873 | noexcept(is_same<_Tp, __sv_type>::value) | |
2874 | { | |
2875 | __sv_type __sv = __svt; | |
2876 | const size_type __size = this->size(); | |
2877 | const size_type __osize = __sv.size(); | |
2878 | const size_type __len = std::min(__size, __osize); | |
2879 | ||
2880 | int __r = traits_type::compare(_M_data(), __sv.data(), __len); | |
2881 | if (!__r) | |
2882 | __r = _S_compare(__size, __osize); | |
2883 | return __r; | |
2884 | } | |
76d7f2c2 | 2885 | |
2886 | /** | |
2887 | * @brief Compare to a string_view. | |
2888 | * @param __pos A position in the string to start comparing from. | |
2889 | * @param __n The number of characters to compare. | |
7c78f2e6 | 2890 | * @param __svt An object convertible to string_view to compare |
2891 | * against. | |
76d7f2c2 | 2892 | * @return Integer < 0, 0, or > 0. |
2893 | */ | |
7c78f2e6 | 2894 | template<typename _Tp> |
2895 | _If_sv<_Tp, int> | |
2896 | compare(size_type __pos, size_type __n, const _Tp& __svt) const | |
2897 | noexcept(is_same<_Tp, __sv_type>::value) | |
2898 | { | |
2899 | __sv_type __sv = __svt; | |
2900 | return __sv_type(*this).substr(__pos, __n).compare(__sv); | |
2901 | } | |
76d7f2c2 | 2902 | |
2903 | /** | |
2904 | * @brief Compare to a string_view. | |
2905 | * @param __pos1 A position in the string to start comparing from. | |
2906 | * @param __n1 The number of characters to compare. | |
7c78f2e6 | 2907 | * @param __svt An object convertible to string_view to compare |
2908 | * against. | |
76d7f2c2 | 2909 | * @param __pos2 A position in the string_view to start comparing from. |
2910 | * @param __n2 The number of characters to compare. | |
2911 | * @return Integer < 0, 0, or > 0. | |
2912 | */ | |
7c78f2e6 | 2913 | template<typename _Tp> |
7d475d13 | 2914 | _If_sv<_Tp, int> |
2915 | compare(size_type __pos1, size_type __n1, const _Tp& __svt, | |
2916 | size_type __pos2, size_type __n2 = npos) const | |
7c78f2e6 | 2917 | noexcept(is_same<_Tp, __sv_type>::value) |
7d475d13 | 2918 | { |
2919 | __sv_type __sv = __svt; | |
2920 | return __sv_type(*this) | |
2921 | .substr(__pos1, __n1).compare(__sv.substr(__pos2, __n2)); | |
2922 | } | |
76d7f2c2 | 2923 | #endif // C++17 |
2924 | ||
63f54259 | 2925 | /** |
2926 | * @brief Compare substring to a string. | |
2927 | * @param __pos Index of first character of substring. | |
2928 | * @param __n Number of characters in substring. | |
2929 | * @param __str String to compare against. | |
2930 | * @return Integer < 0, 0, or > 0. | |
2931 | * | |
2932 | * Form the substring of this string from the @a __n characters | |
2933 | * starting at @a __pos. Returns an integer < 0 if the | |
2934 | * substring is ordered before @a __str, 0 if their values are | |
2935 | * equivalent, or > 0 if the substring is ordered after @a | |
2936 | * __str. Determines the effective length rlen of the strings | |
2937 | * to compare as the smallest of the length of the substring | |
2938 | * and @a __str.size(). The function then compares the two | |
2939 | * strings by calling | |
2940 | * traits::compare(substring.data(),str.data(),rlen). If the | |
2941 | * result of the comparison is nonzero returns it, otherwise | |
2942 | * the shorter one is ordered first. | |
2943 | */ | |
2944 | int | |
2945 | compare(size_type __pos, size_type __n, const basic_string& __str) const; | |
2946 | ||
2947 | /** | |
2948 | * @brief Compare substring to a substring. | |
2949 | * @param __pos1 Index of first character of substring. | |
2950 | * @param __n1 Number of characters in substring. | |
2951 | * @param __str String to compare against. | |
2952 | * @param __pos2 Index of first character of substring of str. | |
2953 | * @param __n2 Number of characters in substring of str. | |
2954 | * @return Integer < 0, 0, or > 0. | |
2955 | * | |
2956 | * Form the substring of this string from the @a __n1 | |
2957 | * characters starting at @a __pos1. Form the substring of @a | |
2958 | * __str from the @a __n2 characters starting at @a __pos2. | |
2959 | * Returns an integer < 0 if this substring is ordered before | |
2960 | * the substring of @a __str, 0 if their values are equivalent, | |
2961 | * or > 0 if this substring is ordered after the substring of | |
2962 | * @a __str. Determines the effective length rlen of the | |
2963 | * strings to compare as the smallest of the lengths of the | |
2964 | * substrings. The function then compares the two strings by | |
2965 | * calling | |
2966 | * traits::compare(substring.data(),str.substr(pos2,n2).data(),rlen). | |
2967 | * If the result of the comparison is nonzero returns it, | |
2968 | * otherwise the shorter one is ordered first. | |
2969 | */ | |
2970 | int | |
2971 | compare(size_type __pos1, size_type __n1, const basic_string& __str, | |
cf3c455b | 2972 | size_type __pos2, size_type __n2 = npos) const; |
63f54259 | 2973 | |
2974 | /** | |
2975 | * @brief Compare to a C string. | |
2976 | * @param __s C string to compare against. | |
2977 | * @return Integer < 0, 0, or > 0. | |
2978 | * | |
2979 | * Returns an integer < 0 if this string is ordered before @a __s, 0 if | |
2980 | * their values are equivalent, or > 0 if this string is ordered after | |
2981 | * @a __s. Determines the effective length rlen of the strings to | |
2982 | * compare as the smallest of size() and the length of a string | |
2983 | * constructed from @a __s. The function then compares the two strings | |
2984 | * by calling traits::compare(data(),s,rlen). If the result of the | |
2985 | * comparison is nonzero returns it, otherwise the shorter one is | |
2986 | * ordered first. | |
2987 | */ | |
2988 | int | |
5b479470 | 2989 | compare(const _CharT* __s) const _GLIBCXX_NOEXCEPT; |
63f54259 | 2990 | |
2991 | // _GLIBCXX_RESOLVE_LIB_DEFECTS | |
2992 | // 5 String::compare specification questionable | |
2993 | /** | |
2994 | * @brief Compare substring to a C string. | |
2995 | * @param __pos Index of first character of substring. | |
2996 | * @param __n1 Number of characters in substring. | |
2997 | * @param __s C string to compare against. | |
2998 | * @return Integer < 0, 0, or > 0. | |
2999 | * | |
3000 | * Form the substring of this string from the @a __n1 | |
3001 | * characters starting at @a pos. Returns an integer < 0 if | |
3002 | * the substring is ordered before @a __s, 0 if their values | |
3003 | * are equivalent, or > 0 if the substring is ordered after @a | |
3004 | * __s. Determines the effective length rlen of the strings to | |
3005 | * compare as the smallest of the length of the substring and | |
3006 | * the length of a string constructed from @a __s. The | |
3007 | * function then compares the two string by calling | |
3008 | * traits::compare(substring.data(),__s,rlen). If the result of | |
3009 | * the comparison is nonzero returns it, otherwise the shorter | |
3010 | * one is ordered first. | |
3011 | */ | |
3012 | int | |
3013 | compare(size_type __pos, size_type __n1, const _CharT* __s) const; | |
3014 | ||
3015 | /** | |
3016 | * @brief Compare substring against a character %array. | |
3017 | * @param __pos Index of first character of substring. | |
3018 | * @param __n1 Number of characters in substring. | |
3019 | * @param __s character %array to compare against. | |
3020 | * @param __n2 Number of characters of s. | |
3021 | * @return Integer < 0, 0, or > 0. | |
3022 | * | |
3023 | * Form the substring of this string from the @a __n1 | |
3024 | * characters starting at @a __pos. Form a string from the | |
3025 | * first @a __n2 characters of @a __s. Returns an integer < 0 | |
3026 | * if this substring is ordered before the string from @a __s, | |
3027 | * 0 if their values are equivalent, or > 0 if this substring | |
3028 | * is ordered after the string from @a __s. Determines the | |
3029 | * effective length rlen of the strings to compare as the | |
3030 | * smallest of the length of the substring and @a __n2. The | |
3031 | * function then compares the two strings by calling | |
3032 | * traits::compare(substring.data(),s,rlen). If the result of | |
3033 | * the comparison is nonzero returns it, otherwise the shorter | |
3034 | * one is ordered first. | |
3035 | * | |
3036 | * NB: s must have at least n2 characters, '\\0' has | |
3037 | * no special meaning. | |
3038 | */ | |
3039 | int | |
3040 | compare(size_type __pos, size_type __n1, const _CharT* __s, | |
3041 | size_type __n2) const; | |
4169c194 | 3042 | |
e131c631 | 3043 | #if __cplusplus > 201703L |
3044 | bool | |
3045 | starts_with(basic_string_view<_CharT, _Traits> __x) const noexcept | |
3046 | { return __sv_type(this->data(), this->size()).starts_with(__x); } | |
3047 | ||
3048 | bool | |
3049 | starts_with(_CharT __x) const noexcept | |
3050 | { return __sv_type(this->data(), this->size()).starts_with(__x); } | |
3051 | ||
3052 | bool | |
3053 | starts_with(const _CharT* __x) const noexcept | |
3054 | { return __sv_type(this->data(), this->size()).starts_with(__x); } | |
3055 | ||
3056 | bool | |
3057 | ends_with(basic_string_view<_CharT, _Traits> __x) const noexcept | |
3058 | { return __sv_type(this->data(), this->size()).ends_with(__x); } | |
3059 | ||
3060 | bool | |
3061 | ends_with(_CharT __x) const noexcept | |
3062 | { return __sv_type(this->data(), this->size()).ends_with(__x); } | |
3063 | ||
3064 | bool | |
3065 | ends_with(const _CharT* __x) const noexcept | |
3066 | { return __sv_type(this->data(), this->size()).ends_with(__x); } | |
3067 | #endif // C++20 | |
3068 | ||
4169c194 | 3069 | // Allow basic_stringbuf::__xfer_bufptrs to call _M_length: |
3070 | template<typename, typename, typename> friend class basic_stringbuf; | |
3071 | }; | |
63f54259 | 3072 | _GLIBCXX_END_NAMESPACE_CXX11 |
3073 | #else // !_GLIBCXX_USE_CXX11_ABI | |
3074 | // Reference-counted COW string implentation | |
3075 | ||
8f0dfb87 | 3076 | /** |
3077 | * @class basic_string basic_string.h <string> | |
3078 | * @brief Managing sequences of characters and character-like objects. | |
3079 | * | |
0291d270 | 3080 | * @ingroup strings |
48e3f567 | 3081 | * @ingroup sequences |
8f0dfb87 | 3082 | * |
7184845c | 3083 | * @tparam _CharT Type of character |
3084 | * @tparam _Traits Traits for character type, defaults to | |
3085 | * char_traits<_CharT>. | |
3086 | * @tparam _Alloc Allocator type, defaults to allocator<_CharT>. | |
3087 | * | |
8f0dfb87 | 3088 | * Meets the requirements of a <a href="tables.html#65">container</a>, a |
3089 | * <a href="tables.html#66">reversible container</a>, and a | |
3090 | * <a href="tables.html#67">sequence</a>. Of the | |
3091 | * <a href="tables.html#68">optional sequence requirements</a>, only | |
0291d270 | 3092 | * @c push_back, @c at, and @c %array access are supported. |
8f0dfb87 | 3093 | * |
3094 | * @doctodo | |
3095 | * | |
3096 | * | |
8f0dfb87 | 3097 | * Documentation? What's that? |
3098 | * Nathan Myers <ncm@cantrip.org>. | |
3099 | * | |
3100 | * A string looks like this: | |
3101 | * | |
3102 | * @code | |
3103 | * [_Rep] | |
3104 | * _M_length | |
3105 | * [basic_string<char_type>] _M_capacity | |
7437cc3e | 3106 | * _M_dataplus _M_refcount |
8f0dfb87 | 3107 | * _M_p ----------------> unnamed array of char_type |
3108 | * @endcode | |
3109 | * | |
3110 | * Where the _M_p points to the first character in the string, and | |
3111 | * you cast it to a pointer-to-_Rep and subtract 1 to get a | |
3112 | * pointer to the header. | |
3113 | * | |
3114 | * This approach has the enormous advantage that a string object | |
3115 | * requires only one allocation. All the ugliness is confined | |
4681b76f | 3116 | * within a single %pair of inline functions, which each compile to |
72117d76 | 3117 | * a single @a add instruction: _Rep::_M_data(), and |
8f0dfb87 | 3118 | * string::_M_rep(); and the allocation function which gets a |
3119 | * block of raw bytes and with room enough and constructs a _Rep | |
3120 | * object at the front. | |
3121 | * | |
4681b76f | 3122 | * The reason you want _M_data pointing to the character %array and |
8f0dfb87 | 3123 | * not the _Rep is so that the debugger can see the string |
3124 | * contents. (Probably we should add a non-inline member to get | |
3125 | * the _Rep for the debugger to use, so users can check the actual | |
3126 | * string length.) | |
3127 | * | |
3128 | * Note that the _Rep object is a POD so that you can have a | |
72117d76 | 3129 | * static <em>empty string</em> _Rep object already @a constructed before |
8f0dfb87 | 3130 | * static constructors have run. The reference-count encoding is |
3131 | * chosen so that a 0 indicates one reference, so you never try to | |
3132 | * destroy the empty-string _Rep object. | |
3133 | * | |
3134 | * All but the last paragraph is considered pretty conventional | |
3135 | * for a C++ string implementation. | |
8f0dfb87 | 3136 | */ |
1d487aca | 3137 | // 21.3 Template class basic_string |
3138 | template<typename _CharT, typename _Traits, typename _Alloc> | |
3139 | class basic_string | |
3140 | { | |
171a395a | 3141 | typedef typename _Alloc::template rebind<_CharT>::other _CharT_alloc_type; |
3142 | ||
1d487aca | 3143 | // Types: |
3144 | public: | |
bae9b8af | 3145 | typedef _Traits traits_type; |
3146 | typedef typename _Traits::char_type value_type; | |
3147 | typedef _Alloc allocator_type; | |
171a395a | 3148 | typedef typename _CharT_alloc_type::size_type size_type; |
3149 | typedef typename _CharT_alloc_type::difference_type difference_type; | |
859e6fed | 3150 | #if __cplusplus < 201103L |
171a395a | 3151 | typedef typename _CharT_alloc_type::reference reference; |
3152 | typedef typename _CharT_alloc_type::const_reference const_reference; | |
859e6fed | 3153 | #else |
3154 | typedef value_type& reference; | |
3155 | typedef const value_type& const_reference; | |
3156 | #endif | |
171a395a | 3157 | typedef typename _CharT_alloc_type::pointer pointer; |
3158 | typedef typename _CharT_alloc_type::const_pointer const_pointer; | |
7da3f282 | 3159 | typedef __gnu_cxx::__normal_iterator<pointer, basic_string> iterator; |
3160 | typedef __gnu_cxx::__normal_iterator<const_pointer, basic_string> | |
3161 | const_iterator; | |
bae9b8af | 3162 | typedef std::reverse_iterator<const_iterator> const_reverse_iterator; |
3163 | typedef std::reverse_iterator<iterator> reverse_iterator; | |
8f0dfb87 | 3164 | |
431a9dda | 3165 | protected: |
3166 | // type used for positions in insert, erase etc. | |
3167 | typedef iterator __const_iterator; | |
3168 | ||
1d487aca | 3169 | private: |
3170 | // _Rep: string representation | |
3171 | // Invariants: | |
f019e348 | 3172 | // 1. String really contains _M_length + 1 characters: due to 21.3.4 |
3173 | // must be kept null-terminated. | |
1d487aca | 3174 | // 2. _M_capacity >= _M_length |
ede3d295 | 3175 | // Allocated memory is always (_M_capacity + 1) * sizeof(_CharT). |
9b4fcc82 | 3176 | // 3. _M_refcount has three states: |
1d487aca | 3177 | // -1: leaked, one reference, no ref-copies allowed, non-const. |
3178 | // 0: one reference, non-const. | |
3179 | // n>0: n + 1 references, operations require a lock, const. | |
3180 | // 4. All fields==0 is an empty string, given the extra storage | |
3181 | // beyond-the-end for a null terminator; thus, the shared | |
3182 | // empty string representation needs no constructor. | |
992fbba9 | 3183 | |
3184 | struct _Rep_base | |
3185 | { | |
bae9b8af | 3186 | size_type _M_length; |
3187 | size_type _M_capacity; | |
9b4fcc82 | 3188 | _Atomic_word _M_refcount; |
992fbba9 | 3189 | }; |
3190 | ||
3191 | struct _Rep : _Rep_base | |
1d487aca | 3192 | { |
3193 | // Types: | |
028843d7 | 3194 | typedef typename _Alloc::template rebind<char>::other _Raw_bytes_alloc; |
1d487aca | 3195 | |
8f0dfb87 | 3196 | // (Public) Data members: |
1d487aca | 3197 | |
3198 | // The maximum number of individual char_type elements of an | |
3199 | // individual string is determined by _S_max_size. This is the | |
3200 | // value that will be returned by max_size(). (Whereas npos | |
3201 | // is the maximum number of bytes the allocator can allocate.) | |
3202 | // If one was to divvy up the theoretical largest size string, | |
3203 | // with a terminating character and m _CharT elements, it'd | |
8f0dfb87 | 3204 | // look like this: |
1d487aca | 3205 | // npos = sizeof(_Rep) + (m * sizeof(_CharT)) + sizeof(_CharT) |
3206 | // Solving for m: | |
8f0dfb87 | 3207 | // m = ((npos - sizeof(_Rep))/sizeof(CharT)) - 1 |
992fbba9 | 3208 | // In addition, this implementation quarters this amount. |
bae9b8af | 3209 | static const size_type _S_max_size; |
3210 | static const _CharT _S_terminal; | |
1d487aca | 3211 | |
992fbba9 | 3212 | // The following storage is init'd to 0 by the linker, resulting |
3213 | // (carefully) in an empty string with one reference. | |
3214 | static size_type _S_empty_rep_storage[]; | |
8f0dfb87 | 3215 | |
bae9b8af | 3216 | static _Rep& |
ff4ae3b5 | 3217 | _S_empty_rep() _GLIBCXX_NOEXCEPT |
79a1c1d7 | 3218 | { |
3219 | // NB: Mild hack to avoid strict-aliasing warnings. Note that | |
3220 | // _S_empty_rep_storage is never modified and the punning should | |
3221 | // be reasonably safe in this case. | |
3222 | void* __p = reinterpret_cast<void*>(&_S_empty_rep_storage); | |
3223 | return *reinterpret_cast<_Rep*>(__p); | |
3224 | } | |
bae9b8af | 3225 | |
1d487aca | 3226 | bool |
ff4ae3b5 | 3227 | _M_is_leaked() const _GLIBCXX_NOEXCEPT |
ff06a77a | 3228 | { |
3229 | #if defined(__GTHREADS) | |
3230 | // _M_refcount is mutated concurrently by _M_refcopy/_M_dispose, | |
3231 | // so we need to use an atomic load. However, _M_is_leaked | |
3232 | // predicate does not change concurrently (i.e. the string is either | |
3233 | // leaked or not), so a relaxed load is enough. | |
3234 | return __atomic_load_n(&this->_M_refcount, __ATOMIC_RELAXED) < 0; | |
3235 | #else | |
3236 | return this->_M_refcount < 0; | |
3237 | #endif | |
3238 | } | |
1d487aca | 3239 | |
3240 | bool | |
ff4ae3b5 | 3241 | _M_is_shared() const _GLIBCXX_NOEXCEPT |
ff06a77a | 3242 | { |
3243 | #if defined(__GTHREADS) | |
3244 | // _M_refcount is mutated concurrently by _M_refcopy/_M_dispose, | |
3245 | // so we need to use an atomic load. Another thread can drop last | |
3246 | // but one reference concurrently with this check, so we need this | |
3247 | // load to be acquire to synchronize with release fetch_and_add in | |
3248 | // _M_dispose. | |
3249 | return __atomic_load_n(&this->_M_refcount, __ATOMIC_ACQUIRE) > 0; | |
3250 | #else | |
3251 | return this->_M_refcount > 0; | |
3252 | #endif | |
3253 | } | |
1d487aca | 3254 | |
3255 | void | |
ff4ae3b5 | 3256 | _M_set_leaked() _GLIBCXX_NOEXCEPT |
9b4fcc82 | 3257 | { this->_M_refcount = -1; } |
1d487aca | 3258 | |
3259 | void | |
ff4ae3b5 | 3260 | _M_set_sharable() _GLIBCXX_NOEXCEPT |
9b4fcc82 | 3261 | { this->_M_refcount = 0; } |
1d487aca | 3262 | |
8d5785ea | 3263 | void |
ff4ae3b5 | 3264 | _M_set_length_and_sharable(size_type __n) _GLIBCXX_NOEXCEPT |
9142e59a | 3265 | { |
a34764b1 | 3266 | #if _GLIBCXX_FULLY_DYNAMIC_STRING == 0 |
9142e59a | 3267 | if (__builtin_expect(this != &_S_empty_rep(), false)) |
3268 | #endif | |
3269 | { | |
3270 | this->_M_set_sharable(); // One reference. | |
3271 | this->_M_length = __n; | |
3272 | traits_type::assign(this->_M_refdata()[__n], _S_terminal); | |
3273 | // grrr. (per 21.3.4) | |
3274 | // You cannot leave those LWG people alone for a second. | |
3275 | } | |
8d5785ea | 3276 | } |
3277 | ||
8f0dfb87 | 3278 | _CharT* |
1d487aca | 3279 | _M_refdata() throw() |
93218b6c | 3280 | { return reinterpret_cast<_CharT*>(this + 1); } |
1d487aca | 3281 | |
8f0dfb87 | 3282 | _CharT* |
1d487aca | 3283 | _M_grab(const _Alloc& __alloc1, const _Alloc& __alloc2) |
8f0dfb87 | 3284 | { |
3285 | return (!_M_is_leaked() && __alloc1 == __alloc2) | |
3286 | ? _M_refcopy() : _M_clone(__alloc1); | |
93218b6c | 3287 | } |
1d487aca | 3288 | |
3289 | // Create & Destroy | |
8f0dfb87 | 3290 | static _Rep* |
586d626b | 3291 | _S_create(size_type, size_type, const _Alloc&); |
1d487aca | 3292 | |
8f0dfb87 | 3293 | void |
ff4ae3b5 | 3294 | _M_dispose(const _Alloc& __a) _GLIBCXX_NOEXCEPT |
8f0dfb87 | 3295 | { |
a34764b1 | 3296 | #if _GLIBCXX_FULLY_DYNAMIC_STRING == 0 |
992fbba9 | 3297 | if (__builtin_expect(this != &_S_empty_rep(), false)) |
06450f58 | 3298 | #endif |
d8155f71 | 3299 | { |
3300 | // Be race-detector-friendly. For more info see bits/c++config. | |
bf943619 | 3301 | _GLIBCXX_SYNCHRONIZATION_HAPPENS_BEFORE(&this->_M_refcount); |
ff06a77a | 3302 | // Decrement of _M_refcount is acq_rel, because: |
3303 | // - all but last decrements need to release to synchronize with | |
3304 | // the last decrement that will delete the object. | |
3305 | // - the last decrement needs to acquire to synchronize with | |
3306 | // all the previous decrements. | |
3307 | // - last but one decrement needs to release to synchronize with | |
3308 | // the acquire load in _M_is_shared that will conclude that | |
3309 | // the object is not shared anymore. | |
d8155f71 | 3310 | if (__gnu_cxx::__exchange_and_add_dispatch(&this->_M_refcount, |
3311 | -1) <= 0) | |
3312 | { | |
bf943619 | 3313 | _GLIBCXX_SYNCHRONIZATION_HAPPENS_AFTER(&this->_M_refcount); |
d8155f71 | 3314 | _M_destroy(__a); |
3315 | } | |
3316 | } | |
1d487aca | 3317 | } // XXX MT |
3318 | ||
8f0dfb87 | 3319 | void |
1d487aca | 3320 | _M_destroy(const _Alloc&) throw(); |
3321 | ||
8f0dfb87 | 3322 | _CharT* |
1d487aca | 3323 | _M_refcopy() throw() |
8f0dfb87 | 3324 | { |
a34764b1 | 3325 | #if _GLIBCXX_FULLY_DYNAMIC_STRING == 0 |
992fbba9 | 3326 | if (__builtin_expect(this != &_S_empty_rep(), false)) |
06450f58 | 3327 | #endif |
c360b175 | 3328 | __gnu_cxx::__atomic_add_dispatch(&this->_M_refcount, 1); |
8f0dfb87 | 3329 | return _M_refdata(); |
1d487aca | 3330 | } // XXX MT |
3331 | ||
8f0dfb87 | 3332 | _CharT* |
1d487aca | 3333 | _M_clone(const _Alloc&, size_type __res = 0); |
1d487aca | 3334 | }; |
3335 | ||
3336 | // Use empty-base optimization: http://www.cantrip.org/emptyopt.html | |
3337 | struct _Alloc_hider : _Alloc | |
3338 | { | |
ff4ae3b5 | 3339 | _Alloc_hider(_CharT* __dat, const _Alloc& __a) _GLIBCXX_NOEXCEPT |
1d487aca | 3340 | : _Alloc(__a), _M_p(__dat) { } |
3341 | ||
3342 | _CharT* _M_p; // The actual data. | |
3343 | }; | |
3344 | ||
3345 | public: | |
3346 | // Data Members (public): | |
3347 | // NB: This is an unsigned type, and thus represents the maximum | |
3348 | // size that the allocator can hold. | |
6b5eba30 | 3349 | /// Value returned by various member functions when they fail. |
bae9b8af | 3350 | static const size_type npos = static_cast<size_type>(-1); |
1d487aca | 3351 | |
3352 | private: | |
3353 | // Data Members (private): | |
bae9b8af | 3354 | mutable _Alloc_hider _M_dataplus; |
1d487aca | 3355 | |
8f0dfb87 | 3356 | _CharT* |
ff4ae3b5 | 3357 | _M_data() const _GLIBCXX_NOEXCEPT |
1d487aca | 3358 | { return _M_dataplus._M_p; } |
3359 | ||
8f0dfb87 | 3360 | _CharT* |
ff4ae3b5 | 3361 | _M_data(_CharT* __p) _GLIBCXX_NOEXCEPT |
1d487aca | 3362 | { return (_M_dataplus._M_p = __p); } |
3363 | ||
8f0dfb87 | 3364 | _Rep* |
ff4ae3b5 | 3365 | _M_rep() const _GLIBCXX_NOEXCEPT |
1d487aca | 3366 | { return &((reinterpret_cast<_Rep*> (_M_data()))[-1]); } |
3367 | ||
3368 | // For the internal use we have functions similar to `begin'/`end' | |
3369 | // but they do not call _M_leak. | |
8f0dfb87 | 3370 | iterator |
ff4ae3b5 | 3371 | _M_ibegin() const _GLIBCXX_NOEXCEPT |
f55adced | 3372 | { return iterator(_M_data()); } |
1d487aca | 3373 | |
8f0dfb87 | 3374 | iterator |
ff4ae3b5 | 3375 | _M_iend() const _GLIBCXX_NOEXCEPT |
f55adced | 3376 | { return iterator(_M_data() + this->size()); } |
1d487aca | 3377 | |
8f0dfb87 | 3378 | void |
1d487aca | 3379 | _M_leak() // for use in begin() & non-const op[] |
8f0dfb87 | 3380 | { |
3381 | if (!_M_rep()->_M_is_leaked()) | |
3382 | _M_leak_hard(); | |
1d487aca | 3383 | } |
3384 | ||
5191e68d | 3385 | size_type |
3386 | _M_check(size_type __pos, const char* __s) const | |
8f0dfb87 | 3387 | { |
85d54afa | 3388 | if (__pos > this->size()) |
b473f47f | 3389 | __throw_out_of_range_fmt(__N("%s: __pos (which is %zu) > " |
3390 | "this->size() (which is %zu)"), | |
3391 | __s, __pos, this->size()); | |
5191e68d | 3392 | return __pos; |
1d487aca | 3393 | } |
3394 | ||
bb3d96d2 | 3395 | void |
3396 | _M_check_length(size_type __n1, size_type __n2, const char* __s) const | |
3397 | { | |
3398 | if (this->max_size() - (this->size() - __n1) < __n2) | |
3399 | __throw_length_error(__N(__s)); | |
3400 | } | |
3401 | ||
5191e68d | 3402 | // NB: _M_limit doesn't check for a bad __pos value. |
3403 | size_type | |
ff4ae3b5 | 3404 | _M_limit(size_type __pos, size_type __off) const _GLIBCXX_NOEXCEPT |
8f0dfb87 | 3405 | { |
5b35e31c | 3406 | const bool __testoff = __off < this->size() - __pos; |
5191e68d | 3407 | return __testoff ? __off : this->size() - __pos; |
1d487aca | 3408 | } |
3409 | ||
d7de596f | 3410 | // True if _Rep and source do not overlap. |
3411 | bool | |
ff4ae3b5 | 3412 | _M_disjunct(const _CharT* __s) const _GLIBCXX_NOEXCEPT |
d7de596f | 3413 | { |
3414 | return (less<const _CharT*>()(__s, _M_data()) | |
3415 | || less<const _CharT*>()(_M_data() + this->size(), __s)); | |
3416 | } | |
3417 | ||
bb3d96d2 | 3418 | // When __n = 1 way faster than the general multichar |
3419 | // traits_type::copy/move/assign. | |
3420 | static void | |
ff4ae3b5 | 3421 | _M_copy(_CharT* __d, const _CharT* __s, size_type __n) _GLIBCXX_NOEXCEPT |
bb3d96d2 | 3422 | { |
3423 | if (__n == 1) | |
3424 | traits_type::assign(*__d, *__s); | |
3425 | else | |
3426 | traits_type::copy(__d, __s, __n); | |
3427 | } | |
3428 | ||
3429 | static void | |
ff4ae3b5 | 3430 | _M_move(_CharT* __d, const _CharT* __s, size_type __n) _GLIBCXX_NOEXCEPT |
bb3d96d2 | 3431 | { |
3432 | if (__n == 1) | |
3433 | traits_type::assign(*__d, *__s); | |
3434 | else | |
3435 | traits_type::move(__d, __s, __n); | |
3436 | } | |
3437 | ||
3438 | static void | |
ff4ae3b5 | 3439 | _M_assign(_CharT* __d, size_type __n, _CharT __c) _GLIBCXX_NOEXCEPT |
bb3d96d2 | 3440 | { |
3441 | if (__n == 1) | |
3442 | traits_type::assign(*__d, __c); | |
3443 | else | |
3444 | traits_type::assign(__d, __n, __c); | |
3445 | } | |
3446 | ||
1d487aca | 3447 | // _S_copy_chars is a separate template to permit specialization |
3448 | // to optimize for the common case of pointers as iterators. | |
3449 | template<class _Iterator> | |
3450 | static void | |
3451 | _S_copy_chars(_CharT* __p, _Iterator __k1, _Iterator __k2) | |
8f0dfb87 | 3452 | { |
0ba86e4e | 3453 | for (; __k1 != __k2; ++__k1, (void)++__p) |
d61598c2 | 3454 | traits_type::assign(*__p, *__k1); // These types are off. |
1d487aca | 3455 | } |
3456 | ||
3457 | static void | |
ff4ae3b5 | 3458 | _S_copy_chars(_CharT* __p, iterator __k1, iterator __k2) _GLIBCXX_NOEXCEPT |
1d487aca | 3459 | { _S_copy_chars(__p, __k1.base(), __k2.base()); } |
3460 | ||
3461 | static void | |
3462 | _S_copy_chars(_CharT* __p, const_iterator __k1, const_iterator __k2) | |
ff4ae3b5 | 3463 | _GLIBCXX_NOEXCEPT |
1d487aca | 3464 | { _S_copy_chars(__p, __k1.base(), __k2.base()); } |
8f0dfb87 | 3465 | |
1d487aca | 3466 | static void |
ff4ae3b5 | 3467 | _S_copy_chars(_CharT* __p, _CharT* __k1, _CharT* __k2) _GLIBCXX_NOEXCEPT |
bb3d96d2 | 3468 | { _M_copy(__p, __k1, __k2 - __k1); } |
1d487aca | 3469 | |
3470 | static void | |
3471 | _S_copy_chars(_CharT* __p, const _CharT* __k1, const _CharT* __k2) | |
ff4ae3b5 | 3472 | _GLIBCXX_NOEXCEPT |
bb3d96d2 | 3473 | { _M_copy(__p, __k1, __k2 - __k1); } |
1d487aca | 3474 | |
9acadc12 | 3475 | static int |
ff4ae3b5 | 3476 | _S_compare(size_type __n1, size_type __n2) _GLIBCXX_NOEXCEPT |
9acadc12 | 3477 | { |
3478 | const difference_type __d = difference_type(__n1 - __n2); | |
3479 | ||
ee620c0d | 3480 | if (__d > __gnu_cxx::__numeric_traits<int>::__max) |
3481 | return __gnu_cxx::__numeric_traits<int>::__max; | |
3482 | else if (__d < __gnu_cxx::__numeric_traits<int>::__min) | |
3483 | return __gnu_cxx::__numeric_traits<int>::__min; | |
9acadc12 | 3484 | else |
ee620c0d | 3485 | return int(__d); |
9acadc12 | 3486 | } |
3487 | ||
8f0dfb87 | 3488 | void |
1d487aca | 3489 | _M_mutate(size_type __pos, size_type __len1, size_type __len2); |
3490 | ||
8f0dfb87 | 3491 | void |
1d487aca | 3492 | _M_leak_hard(); |
3493 | ||
8f0dfb87 | 3494 | static _Rep& |
ff4ae3b5 | 3495 | _S_empty_rep() _GLIBCXX_NOEXCEPT |
992fbba9 | 3496 | { return _Rep::_S_empty_rep(); } |
1d487aca | 3497 | |
98185b9f | 3498 | #if __cplusplus >= 201703L |
805aeef7 | 3499 | // A helper type for avoiding boiler-plate. |
3500 | typedef basic_string_view<_CharT, _Traits> __sv_type; | |
3501 | ||
3502 | template<typename _Tp, typename _Res> | |
3503 | using _If_sv = enable_if_t< | |
3504 | __and_<is_convertible<const _Tp&, __sv_type>, | |
910455ce | 3505 | __not_<is_convertible<const _Tp*, const basic_string*>>, |
805aeef7 | 3506 | __not_<is_convertible<const _Tp&, const _CharT*>>>::value, |
3507 | _Res>; | |
7c78f2e6 | 3508 | |
3509 | // Allows an implicit conversion to __sv_type. | |
3510 | static __sv_type | |
3511 | _S_to_string_view(__sv_type __svt) noexcept | |
3512 | { return __svt; } | |
3513 | ||
3514 | // Wraps a string_view by explicit conversion and thus | |
3515 | // allows to add an internal constructor that does not | |
3516 | // participate in overload resolution when a string_view | |
3517 | // is provided. | |
3518 | struct __sv_wrapper | |
3519 | { | |
3520 | explicit __sv_wrapper(__sv_type __sv) noexcept : _M_sv(__sv) { } | |
3521 | __sv_type _M_sv; | |
3522 | }; | |
98185b9f | 3523 | |
3524 | /** | |
3525 | * @brief Only internally used: Construct string from a string view | |
3526 | * wrapper. | |
3527 | * @param __svw string view wrapper. | |
3528 | * @param __a Allocator to use. | |
3529 | */ | |
3530 | explicit | |
3531 | basic_string(__sv_wrapper __svw, const _Alloc& __a) | |
3532 | : basic_string(__svw._M_sv.data(), __svw._M_sv.size(), __a) { } | |
805aeef7 | 3533 | #endif |
3534 | ||
1d487aca | 3535 | public: |
3536 | // Construct/copy/destroy: | |
3537 | // NB: We overload ctors in some cases instead of using default | |
3538 | // arguments, per 17.4.4.4 para. 2 item 2. | |
3539 | ||
3d30b815 | 3540 | /** |
3541 | * @brief Default constructor creates an empty string. | |
3542 | */ | |
c20b5151 | 3543 | basic_string() |
a34764b1 | 3544 | #if _GLIBCXX_FULLY_DYNAMIC_STRING == 0 |
7966d2b9 | 3545 | _GLIBCXX_NOEXCEPT |
859e6fed | 3546 | : _M_dataplus(_S_empty_rep()._M_refdata(), _Alloc()) |
c20b5151 | 3547 | #else |
859e6fed | 3548 | : _M_dataplus(_S_construct(size_type(), _CharT(), _Alloc()), _Alloc()) |
c20b5151 | 3549 | #endif |
859e6fed | 3550 | { } |
1d487aca | 3551 | |
3d30b815 | 3552 | /** |
1eeb09b7 | 3553 | * @brief Construct an empty string using allocator @a a. |
3d30b815 | 3554 | */ |
8f0dfb87 | 3555 | explicit |
1d487aca | 3556 | basic_string(const _Alloc& __a); |
3557 | ||
3558 | // NB: per LWG issue 42, semantics different from IS: | |
3d30b815 | 3559 | /** |
3560 | * @brief Construct string with copy of value of @a str. | |
e12e4f3b | 3561 | * @param __str Source string. |
3d30b815 | 3562 | */ |
1d487aca | 3563 | basic_string(const basic_string& __str); |
409191e4 | 3564 | |
3565 | // _GLIBCXX_RESOLVE_LIB_DEFECTS | |
3566 | // 2583. no way to supply an allocator for basic_string(str, pos) | |
3567 | /** | |
3568 | * @brief Construct string as copy of a substring. | |
3569 | * @param __str Source string. | |
3570 | * @param __pos Index of first character to copy from. | |
3571 | * @param __a Allocator to use. | |
3572 | */ | |
3573 | basic_string(const basic_string& __str, size_type __pos, | |
3574 | const _Alloc& __a = _Alloc()); | |
3575 | ||
3d30b815 | 3576 | /** |
3577 | * @brief Construct string as copy of a substring. | |
e12e4f3b | 3578 | * @param __str Source string. |
3579 | * @param __pos Index of first character to copy from. | |
409191e4 | 3580 | * @param __n Number of characters to copy. |
3d30b815 | 3581 | */ |
1d487aca | 3582 | basic_string(const basic_string& __str, size_type __pos, |
409191e4 | 3583 | size_type __n); |
3d30b815 | 3584 | /** |
3585 | * @brief Construct string as copy of a substring. | |
e12e4f3b | 3586 | * @param __str Source string. |
3587 | * @param __pos Index of first character to copy from. | |
3588 | * @param __n Number of characters to copy. | |
3589 | * @param __a Allocator to use. | |
3d30b815 | 3590 | */ |
1d487aca | 3591 | basic_string(const basic_string& __str, size_type __pos, |
3592 | size_type __n, const _Alloc& __a); | |
3593 | ||
3d30b815 | 3594 | /** |
4681b76f | 3595 | * @brief Construct string initialized by a character %array. |
e12e4f3b | 3596 | * @param __s Source character %array. |
3597 | * @param __n Number of characters to copy. | |
3598 | * @param __a Allocator to use (default is default allocator). | |
bae9b8af | 3599 | * |
e12e4f3b | 3600 | * NB: @a __s must have at least @a __n characters, '\\0' |
72117d76 | 3601 | * has no special meaning. |
3d30b815 | 3602 | */ |
1d487aca | 3603 | basic_string(const _CharT* __s, size_type __n, |
3604 | const _Alloc& __a = _Alloc()); | |
3d30b815 | 3605 | /** |
3606 | * @brief Construct string as copy of a C string. | |
e12e4f3b | 3607 | * @param __s Source C string. |
3608 | * @param __a Allocator to use (default is default allocator). | |
3d30b815 | 3609 | */ |
1d487aca | 3610 | basic_string(const _CharT* __s, const _Alloc& __a = _Alloc()); |
3d30b815 | 3611 | /** |
3612 | * @brief Construct string as multiple characters. | |
e12e4f3b | 3613 | * @param __n Number of characters. |
3614 | * @param __c Character to use. | |
3615 | * @param __a Allocator to use (default is default allocator). | |
3d30b815 | 3616 | */ |
1d487aca | 3617 | basic_string(size_type __n, _CharT __c, const _Alloc& __a = _Alloc()); |
3618 | ||
0c8766b1 | 3619 | #if __cplusplus >= 201103L |
c20b5151 | 3620 | /** |
3621 | * @brief Move construct string. | |
e12e4f3b | 3622 | * @param __str Source string. |
c20b5151 | 3623 | * |
e12e4f3b | 3624 | * The newly-created string contains the exact contents of @a __str. |
3625 | * @a __str is a valid, but unspecified string. | |
c20b5151 | 3626 | **/ |
da1b9e17 | 3627 | basic_string(basic_string&& __str) |
3628 | #if _GLIBCXX_FULLY_DYNAMIC_STRING == 0 | |
3629 | noexcept // FIXME C++11: should always be noexcept. | |
3630 | #endif | |
859e6fed | 3631 | : _M_dataplus(std::move(__str._M_dataplus)) |
c20b5151 | 3632 | { |
a34764b1 | 3633 | #if _GLIBCXX_FULLY_DYNAMIC_STRING == 0 |
c20b5151 | 3634 | __str._M_data(_S_empty_rep()._M_refdata()); |
3635 | #else | |
3636 | __str._M_data(_S_construct(size_type(), _CharT(), get_allocator())); | |
3637 | #endif | |
3638 | } | |
3639 | ||
b23fdac1 | 3640 | /** |
4681b76f | 3641 | * @brief Construct string from an initializer %list. |
e12e4f3b | 3642 | * @param __l std::initializer_list of characters. |
3643 | * @param __a Allocator to use (default is default allocator). | |
b23fdac1 | 3644 | */ |
3645 | basic_string(initializer_list<_CharT> __l, const _Alloc& __a = _Alloc()); | |
859e6fed | 3646 | |
3647 | basic_string(const basic_string& __str, const _Alloc& __a) | |
3648 | : _M_dataplus(__str._M_rep()->_M_grab(__a, __str.get_allocator()), __a) | |
3649 | { } | |
3650 | ||
3651 | basic_string(basic_string&& __str, const _Alloc& __a) | |
3652 | : _M_dataplus(__str._M_data(), __a) | |
3653 | { | |
3654 | if (__a == __str.get_allocator()) | |
3655 | { | |
3656 | #if _GLIBCXX_FULLY_DYNAMIC_STRING == 0 | |
3657 | __str._M_data(_S_empty_rep()._M_refdata()); | |
3658 | #else | |
3659 | __str._M_data(_S_construct(size_type(), _CharT(), __a)); | |
3660 | #endif | |
3661 | } | |
3662 | else | |
3663 | _M_dataplus._M_p = _S_construct(__str.begin(), __str.end(), __a); | |
3664 | } | |
0c8766b1 | 3665 | #endif // C++11 |
b23fdac1 | 3666 | |
3d30b815 | 3667 | /** |
3668 | * @brief Construct string as copy of a range. | |
e12e4f3b | 3669 | * @param __beg Start of range. |
3670 | * @param __end End of range. | |
3671 | * @param __a Allocator to use (default is default allocator). | |
3d30b815 | 3672 | */ |
1d487aca | 3673 | template<class _InputIterator> |
d61598c2 | 3674 | basic_string(_InputIterator __beg, _InputIterator __end, |
1d487aca | 3675 | const _Alloc& __a = _Alloc()); |
3676 | ||
98185b9f | 3677 | #if __cplusplus >= 201703L |
805aeef7 | 3678 | /** |
3679 | * @brief Construct string from a substring of a string_view. | |
7c78f2e6 | 3680 | * @param __t Source object convertible to string view. |
805aeef7 | 3681 | * @param __pos The index of the first character to copy from __t. |
3682 | * @param __n The number of characters to copy from __t. | |
3683 | * @param __a Allocator to use. | |
3684 | */ | |
3685 | template<typename _Tp, typename = _If_sv<_Tp, void>> | |
3686 | basic_string(const _Tp& __t, size_type __pos, size_type __n, | |
3687 | const _Alloc& __a = _Alloc()) | |
7c78f2e6 | 3688 | : basic_string(_S_to_string_view(__t).substr(__pos, __n), __a) { } |
805aeef7 | 3689 | |
3690 | /** | |
3691 | * @brief Construct string from a string_view. | |
7c78f2e6 | 3692 | * @param __t Source object convertible to string view. |
805aeef7 | 3693 | * @param __a Allocator to use (default is default allocator). |
3694 | */ | |
7c78f2e6 | 3695 | template<typename _Tp, typename = _If_sv<_Tp, void>> |
3696 | explicit | |
3697 | basic_string(const _Tp& __t, const _Alloc& __a = _Alloc()) | |
3698 | : basic_string(__sv_wrapper(_S_to_string_view(__t)), __a) { } | |
805aeef7 | 3699 | #endif // C++17 |
3700 | ||
3d30b815 | 3701 | /** |
3702 | * @brief Destroy the string instance. | |
3703 | */ | |
c95bf15b | 3704 | ~basic_string() _GLIBCXX_NOEXCEPT |
1d487aca | 3705 | { _M_rep()->_M_dispose(this->get_allocator()); } |
3706 | ||
3d30b815 | 3707 | /** |
3708 | * @brief Assign the value of @a str to this string. | |
e12e4f3b | 3709 | * @param __str Source string. |
3d30b815 | 3710 | */ |
8f0dfb87 | 3711 | basic_string& |
7966d2b9 | 3712 | operator=(const basic_string& __str) |
2cb8dec3 | 3713 | { return this->assign(__str); } |
1d487aca | 3714 | |
3d30b815 | 3715 | /** |
3716 | * @brief Copy contents of @a s into this string. | |
e12e4f3b | 3717 | * @param __s Source null-terminated string. |
3d30b815 | 3718 | */ |
8f0dfb87 | 3719 | basic_string& |
c183af9a | 3720 | operator=(const _CharT* __s) |
2cb8dec3 | 3721 | { return this->assign(__s); } |
1d487aca | 3722 | |
3d30b815 | 3723 | /** |
3724 | * @brief Set value to string of length 1. | |
e12e4f3b | 3725 | * @param __c Source character. |
3d30b815 | 3726 | * |
3727 | * Assigning to a character makes this string length 1 and | |
3728 | * (*this)[0] == @a c. | |
3729 | */ | |
8f0dfb87 | 3730 | basic_string& |
c183af9a | 3731 | operator=(_CharT __c) |
3732 | { | |
3733 | this->assign(1, __c); | |
3734 | return *this; | |
3735 | } | |
1d487aca | 3736 | |
0c8766b1 | 3737 | #if __cplusplus >= 201103L |
c20b5151 | 3738 | /** |
3739 | * @brief Move assign the value of @a str to this string. | |
e12e4f3b | 3740 | * @param __str Source string. |
c20b5151 | 3741 | * |
3742 | * The contents of @a str are moved into this string (without copying). | |
3743 | * @a str is a valid, but unspecified string. | |
3744 | **/ | |
3745 | basic_string& | |
3746 | operator=(basic_string&& __str) | |
7966d2b9 | 3747 | _GLIBCXX_NOEXCEPT_IF(allocator_traits<_Alloc>::is_always_equal::value) |
c20b5151 | 3748 | { |
3749 | // NB: DR 1204. | |
3750 | this->swap(__str); | |
3751 | return *this; | |
3752 | } | |
3753 | ||
b23fdac1 | 3754 | /** |
4681b76f | 3755 | * @brief Set value to string constructed from initializer %list. |
e12e4f3b | 3756 | * @param __l std::initializer_list. |
b23fdac1 | 3757 | */ |
3758 | basic_string& | |
3759 | operator=(initializer_list<_CharT> __l) | |
3760 | { | |
e4250ca9 | 3761 | this->assign(__l.begin(), __l.size()); |
b23fdac1 | 3762 | return *this; |
3763 | } | |
0c8766b1 | 3764 | #endif // C++11 |
b23fdac1 | 3765 | |
98185b9f | 3766 | #if __cplusplus >= 201703L |
805aeef7 | 3767 | /** |
3768 | * @brief Set value to string constructed from a string_view. | |
7c78f2e6 | 3769 | * @param __svt An object convertible to string_view. |
805aeef7 | 3770 | */ |
f43be3df | 3771 | template<typename _Tp> |
3772 | _If_sv<_Tp, basic_string&> | |
7c78f2e6 | 3773 | operator=(const _Tp& __svt) |
3774 | { return this->assign(__svt); } | |
805aeef7 | 3775 | |
3776 | /** | |
3777 | * @brief Convert to a string_view. | |
3778 | * @return A string_view. | |
3779 | */ | |
3780 | operator __sv_type() const noexcept | |
3781 | { return __sv_type(data(), size()); } | |
3782 | #endif // C++17 | |
3783 | ||
1d487aca | 3784 | // Iterators: |
3d30b815 | 3785 | /** |
3786 | * Returns a read/write iterator that points to the first character in | |
3787 | * the %string. Unshares the string. | |
3788 | */ | |
8f0dfb87 | 3789 | iterator |
da1b9e17 | 3790 | begin() // FIXME C++11: should be noexcept. |
8f0dfb87 | 3791 | { |
3792 | _M_leak(); | |
1d487aca | 3793 | return iterator(_M_data()); |
3794 | } | |
3795 | ||
3d30b815 | 3796 | /** |
3797 | * Returns a read-only (constant) iterator that points to the first | |
3798 | * character in the %string. | |
3799 | */ | |
8f0dfb87 | 3800 | const_iterator |
9112175a | 3801 | begin() const _GLIBCXX_NOEXCEPT |
1d487aca | 3802 | { return const_iterator(_M_data()); } |
3803 | ||
3d30b815 | 3804 | /** |
3805 | * Returns a read/write iterator that points one past the last | |
3806 | * character in the %string. Unshares the string. | |
3807 | */ | |
8f0dfb87 | 3808 | iterator |
da1b9e17 | 3809 | end() // FIXME C++11: should be noexcept. |
1d487aca | 3810 | { |
5b35e31c | 3811 | _M_leak(); |
3812 | return iterator(_M_data() + this->size()); | |
1d487aca | 3813 | } |
3814 | ||
3d30b815 | 3815 | /** |
3816 | * Returns a read-only (constant) iterator that points one past the | |
3817 | * last character in the %string. | |
3818 | */ | |
8f0dfb87 | 3819 | const_iterator |
9112175a | 3820 | end() const _GLIBCXX_NOEXCEPT |
1d487aca | 3821 | { return const_iterator(_M_data() + this->size()); } |
3822 | ||
3d30b815 | 3823 | /** |
3824 | * Returns a read/write reverse iterator that points to the last | |
3825 | * character in the %string. Iteration is done in reverse element | |
3826 | * order. Unshares the string. | |
3827 | */ | |
8f0dfb87 | 3828 | reverse_iterator |
da1b9e17 | 3829 | rbegin() // FIXME C++11: should be noexcept. |
1d487aca | 3830 | { return reverse_iterator(this->end()); } |
3831 | ||
3d30b815 | 3832 | /** |
3833 | * Returns a read-only (constant) reverse iterator that points | |
3834 | * to the last character in the %string. Iteration is done in | |
3835 | * reverse element order. | |
3836 | */ | |
8f0dfb87 | 3837 | const_reverse_iterator |
9112175a | 3838 | rbegin() const _GLIBCXX_NOEXCEPT |
1d487aca | 3839 | { return const_reverse_iterator(this->end()); } |
3840 | ||
3d30b815 | 3841 | /** |
3842 | * Returns a read/write reverse iterator that points to one before the | |
3843 | * first character in the %string. Iteration is done in reverse | |
3844 | * element order. Unshares the string. | |
3845 | */ | |
8f0dfb87 | 3846 | reverse_iterator |
da1b9e17 | 3847 | rend() // FIXME C++11: should be noexcept. |
1d487aca | 3848 | { return reverse_iterator(this->begin()); } |
3849 | ||
3d30b815 | 3850 | /** |
3851 | * Returns a read-only (constant) reverse iterator that points | |
3852 | * to one before the first character in the %string. Iteration | |
3853 | * is done in reverse element order. | |
3854 | */ | |
8f0dfb87 | 3855 | const_reverse_iterator |
9112175a | 3856 | rend() const _GLIBCXX_NOEXCEPT |
1d487aca | 3857 | { return const_reverse_iterator(this->begin()); } |
3858 | ||
0c8766b1 | 3859 | #if __cplusplus >= 201103L |
43308b7e | 3860 | /** |
3861 | * Returns a read-only (constant) iterator that points to the first | |
3862 | * character in the %string. | |
3863 | */ | |
3864 | const_iterator | |
9112175a | 3865 | cbegin() const noexcept |
43308b7e | 3866 | { return const_iterator(this->_M_data()); } |
3867 | ||
3868 | /** | |
3869 | * Returns a read-only (constant) iterator that points one past the | |
3870 | * last character in the %string. | |
3871 | */ | |
3872 | const_iterator | |
9112175a | 3873 | cend() const noexcept |
43308b7e | 3874 | { return const_iterator(this->_M_data() + this->size()); } |
3875 | ||
3876 | /** | |
3877 | * Returns a read-only (constant) reverse iterator that points | |
3878 | * to the last character in the %string. Iteration is done in | |
3879 | * reverse element order. | |
3880 | */ | |
3881 | const_reverse_iterator | |
9112175a | 3882 | crbegin() const noexcept |
43308b7e | 3883 | { return const_reverse_iterator(this->end()); } |
3884 | ||
3885 | /** | |
3886 | * Returns a read-only (constant) reverse iterator that points | |
3887 | * to one before the first character in the %string. Iteration | |
3888 | * is done in reverse element order. | |
3889 | */ | |
3890 | const_reverse_iterator | |
9112175a | 3891 | crend() const noexcept |
43308b7e | 3892 | { return const_reverse_iterator(this->begin()); } |
3893 | #endif | |
3894 | ||
1d487aca | 3895 | public: |
3896 | // Capacity: | |
3d30b815 | 3897 | /// Returns the number of characters in the string, not including any |
3898 | /// null-termination. | |
8f0dfb87 | 3899 | size_type |
9112175a | 3900 | size() const _GLIBCXX_NOEXCEPT |
f55adced | 3901 | { return _M_rep()->_M_length; } |
1d487aca | 3902 | |
3d30b815 | 3903 | /// Returns the number of characters in the string, not including any |
3904 | /// null-termination. | |
8f0dfb87 | 3905 | size_type |
9112175a | 3906 | length() const _GLIBCXX_NOEXCEPT |
f55adced | 3907 | { return _M_rep()->_M_length; } |
1d487aca | 3908 | |
5b4ff012 | 3909 | /// Returns the size() of the largest possible %string. |
8f0dfb87 | 3910 | size_type |
9112175a | 3911 | max_size() const _GLIBCXX_NOEXCEPT |
f55adced | 3912 | { return _Rep::_S_max_size; } |
1d487aca | 3913 | |
3d30b815 | 3914 | /** |
3915 | * @brief Resizes the %string to the specified number of characters. | |
e12e4f3b | 3916 | * @param __n Number of characters the %string should contain. |
3917 | * @param __c Character to fill any new elements. | |
3d30b815 | 3918 | * |
3919 | * This function will %resize the %string to the specified | |
3920 | * number of characters. If the number is smaller than the | |
3921 | * %string's current size the %string is truncated, otherwise | |
e12e4f3b | 3922 | * the %string is extended and new elements are %set to @a __c. |
3d30b815 | 3923 | */ |
8f0dfb87 | 3924 | void |
1d487aca | 3925 | resize(size_type __n, _CharT __c); |
3926 | ||
3d30b815 | 3927 | /** |
3928 | * @brief Resizes the %string to the specified number of characters. | |
e12e4f3b | 3929 | * @param __n Number of characters the %string should contain. |
3d30b815 | 3930 | * |
3931 | * This function will resize the %string to the specified length. If | |
3932 | * the new size is smaller than the %string's current size the %string | |
3933 | * is truncated, otherwise the %string is extended and new characters | |
3934 | * are default-constructed. For basic types such as char, this means | |
3935 | * setting them to 0. | |
3936 | */ | |
8f0dfb87 | 3937 | void |
f55adced | 3938 | resize(size_type __n) |
3939 | { this->resize(__n, _CharT()); } | |
1d487aca | 3940 | |
0c8766b1 | 3941 | #if __cplusplus >= 201103L |
5b4ff012 | 3942 | /// A non-binding request to reduce capacity() to size(). |
3943 | void | |
ff4ae3b5 | 3944 | shrink_to_fit() _GLIBCXX_NOEXCEPT |
5b4ff012 | 3945 | { |
6904f6c1 | 3946 | #if __cpp_exceptions |
775d377d | 3947 | if (capacity() > size()) |
3948 | { | |
6904f6c1 | 3949 | try |
775d377d | 3950 | { reserve(0); } |
6904f6c1 | 3951 | catch(...) |
775d377d | 3952 | { } |
3953 | } | |
ed0cec12 | 3954 | #endif |
5b4ff012 | 3955 | } |
3956 | #endif | |
3957 | ||
3d30b815 | 3958 | /** |
3959 | * Returns the total number of characters that the %string can hold | |
3960 | * before needing to allocate more memory. | |
3961 | */ | |
8f0dfb87 | 3962 | size_type |
9112175a | 3963 | capacity() const _GLIBCXX_NOEXCEPT |
f55adced | 3964 | { return _M_rep()->_M_capacity; } |
1d487aca | 3965 | |
3d30b815 | 3966 | /** |
3967 | * @brief Attempt to preallocate enough memory for specified number of | |
3968 | * characters. | |
e12e4f3b | 3969 | * @param __res_arg Number of characters required. |
3970 | * @throw std::length_error If @a __res_arg exceeds @c max_size(). | |
3d30b815 | 3971 | * |
3972 | * This function attempts to reserve enough memory for the | |
3973 | * %string to hold the specified number of characters. If the | |
3974 | * number requested is more than max_size(), length_error is | |
3975 | * thrown. | |
3976 | * | |
3977 | * The advantage of this function is that if optimal code is a | |
3978 | * necessity and the user can determine the string length that will be | |
3979 | * required, the user can reserve the memory in %advance, and thus | |
3980 | * prevent a possible reallocation of memory and copying of %string | |
3981 | * data. | |
3982 | */ | |
8f0dfb87 | 3983 | void |
1d487aca | 3984 | reserve(size_type __res_arg = 0); |
3985 | ||
3d30b815 | 3986 | /** |
3987 | * Erases the string, making it empty. | |
3988 | */ | |
fab50047 | 3989 | #if _GLIBCXX_FULLY_DYNAMIC_STRING == 0 |
3990 | void | |
3991 | clear() _GLIBCXX_NOEXCEPT | |
3992 | { | |
3993 | if (_M_rep()->_M_is_shared()) | |
3994 | { | |
3995 | _M_rep()->_M_dispose(this->get_allocator()); | |
3996 | _M_data(_S_empty_rep()._M_refdata()); | |
3997 | } | |
3998 | else | |
3999 | _M_rep()->_M_set_length_and_sharable(0); | |
4000 | } | |
4001 | #else | |
ff4ae3b5 | 4002 | // PR 56166: this should not throw. |
8f0dfb87 | 4003 | void |
da1b9e17 | 4004 | clear() |
f55adced | 4005 | { _M_mutate(0, this->size(), 0); } |
fab50047 | 4006 | #endif |
1d487aca | 4007 | |
3d30b815 | 4008 | /** |
72117d76 | 4009 | * Returns true if the %string is empty. Equivalent to |
4010 | * <code>*this == ""</code>. | |
3d30b815 | 4011 | */ |
eaf966f3 | 4012 | _GLIBCXX_NODISCARD bool |
9112175a | 4013 | empty() const _GLIBCXX_NOEXCEPT |
f55adced | 4014 | { return this->size() == 0; } |
1d487aca | 4015 | |
4016 | // Element access: | |
3d30b815 | 4017 | /** |
4018 | * @brief Subscript access to the data contained in the %string. | |
e12e4f3b | 4019 | * @param __pos The index of the character to access. |
3d30b815 | 4020 | * @return Read-only (constant) reference to the character. |
4021 | * | |
4022 | * This operator allows for easy, array-style, data access. | |
4023 | * Note that data access with this operator is unchecked and | |
4024 | * out_of_range lookups are not defined. (For checked lookups | |
4025 | * see at().) | |
4026 | */ | |
8f0dfb87 | 4027 | const_reference |
ff4ae3b5 | 4028 | operator[] (size_type __pos) const _GLIBCXX_NOEXCEPT |
bae9b8af | 4029 | { |
6b5e6f09 | 4030 | __glibcxx_assert(__pos <= size()); |
bae9b8af | 4031 | return _M_data()[__pos]; |
d570f2e9 | 4032 | } |
1d487aca | 4033 | |
3d30b815 | 4034 | /** |
4035 | * @brief Subscript access to the data contained in the %string. | |
e12e4f3b | 4036 | * @param __pos The index of the character to access. |
3d30b815 | 4037 | * @return Read/write reference to the character. |
4038 | * | |
4039 | * This operator allows for easy, array-style, data access. | |
4040 | * Note that data access with this operator is unchecked and | |
4041 | * out_of_range lookups are not defined. (For checked lookups | |
4042 | * see at().) Unshares the string. | |
4043 | */ | |
8f0dfb87 | 4044 | reference |
4045 | operator[](size_type __pos) | |
4046 | { | |
7e663130 | 4047 | // Allow pos == size() both in C++98 mode, as v3 extension, |
4048 | // and in C++11 mode. | |
6b5e6f09 | 4049 | __glibcxx_assert(__pos <= size()); |
7e663130 | 4050 | // In pedantic mode be strict in C++98 mode. |
4051 | _GLIBCXX_DEBUG_PEDASSERT(__cplusplus >= 201103L || __pos < size()); | |
8f0dfb87 | 4052 | _M_leak(); |
4053 | return _M_data()[__pos]; | |
1d487aca | 4054 | } |
4055 | ||
3d30b815 | 4056 | /** |
4057 | * @brief Provides access to the data contained in the %string. | |
e12e4f3b | 4058 | * @param __n The index of the character to access. |
3d30b815 | 4059 | * @return Read-only (const) reference to the character. |
4060 | * @throw std::out_of_range If @a n is an invalid index. | |
4061 | * | |
4062 | * This function provides for safer data access. The parameter is | |
4063 | * first checked that it is in the range of the string. The function | |
4064 | * throws out_of_range if the check fails. | |
4065 | */ | |
8f0dfb87 | 4066 | const_reference |
1d487aca | 4067 | at(size_type __n) const |
4068 | { | |
85d54afa | 4069 | if (__n >= this->size()) |
b473f47f | 4070 | __throw_out_of_range_fmt(__N("basic_string::at: __n " |
4071 | "(which is %zu) >= this->size() " | |
4072 | "(which is %zu)"), | |
4073 | __n, this->size()); | |
8f0dfb87 | 4074 | return _M_data()[__n]; |
1d487aca | 4075 | } |
4076 | ||
0f998edb | 4077 | /** |
4078 | * @brief Provides access to the data contained in the %string. | |
4079 | * @param __n The index of the character to access. | |
4080 | * @return Read/write reference to the character. | |
4081 | * @throw std::out_of_range If @a n is an invalid index. | |
4082 | * | |
4083 | * This function provides for safer data access. The parameter is | |
4084 | * first checked that it is in the range of the string. The function | |
4085 | * throws out_of_range if the check fails. Success results in | |
4086 | * unsharing the string. | |
4087 | */ | |
4088 | reference | |
4089 | at(size_type __n) | |
4090 | { | |
4091 | if (__n >= size()) | |
b473f47f | 4092 | __throw_out_of_range_fmt(__N("basic_string::at: __n " |
4093 | "(which is %zu) >= this->size() " | |
4094 | "(which is %zu)"), | |
4095 | __n, this->size()); | |
0f998edb | 4096 | _M_leak(); |
4097 | return _M_data()[__n]; | |
4098 | } | |
4099 | ||
0c8766b1 | 4100 | #if __cplusplus >= 201103L |
6adbb837 | 4101 | /** |
4102 | * Returns a read/write reference to the data at the first | |
4103 | * element of the %string. | |
4104 | */ | |
4105 | reference | |
4106 | front() | |
ffff0e95 | 4107 | { |
6b5e6f09 | 4108 | __glibcxx_assert(!empty()); |
ffff0e95 | 4109 | return operator[](0); |
4110 | } | |
6adbb837 | 4111 | |
4112 | /** | |
4113 | * Returns a read-only (constant) reference to the data at the first | |
4114 | * element of the %string. | |
4115 | */ | |
4116 | const_reference | |
03a91883 | 4117 | front() const noexcept |
ffff0e95 | 4118 | { |
6b5e6f09 | 4119 | __glibcxx_assert(!empty()); |
ffff0e95 | 4120 | return operator[](0); |
4121 | } | |
6adbb837 | 4122 | |
4123 | /** | |
4124 | * Returns a read/write reference to the data at the last | |
4125 | * element of the %string. | |
4126 | */ | |
4127 | reference | |
4128 | back() | |
ffff0e95 | 4129 | { |
6b5e6f09 | 4130 | __glibcxx_assert(!empty()); |
ffff0e95 | 4131 | return operator[](this->size() - 1); |
4132 | } | |
6adbb837 | 4133 | |
4134 | /** | |
4135 | * Returns a read-only (constant) reference to the data at the | |
4136 | * last element of the %string. | |
4137 | */ | |
4138 | const_reference | |
03a91883 | 4139 | back() const noexcept |
ffff0e95 | 4140 | { |
6b5e6f09 | 4141 | __glibcxx_assert(!empty()); |
ffff0e95 | 4142 | return operator[](this->size() - 1); |
4143 | } | |
6adbb837 | 4144 | #endif |
4145 | ||
1d487aca | 4146 | // Modifiers: |
3d30b815 | 4147 | /** |
4148 | * @brief Append a string to this string. | |
e12e4f3b | 4149 | * @param __str The string to append. |
3d30b815 | 4150 | * @return Reference to this string. |
4151 | */ | |
8f0dfb87 | 4152 | basic_string& |
f55adced | 4153 | operator+=(const basic_string& __str) |
4154 | { return this->append(__str); } | |
1d487aca | 4155 | |
3d30b815 | 4156 | /** |
4157 | * @brief Append a C string. | |
e12e4f3b | 4158 | * @param __s The C string to append. |
3d30b815 | 4159 | * @return Reference to this string. |
4160 | */ | |
8f0dfb87 | 4161 | basic_string& |
f55adced | 4162 | operator+=(const _CharT* __s) |
4163 | { return this->append(__s); } | |
1d487aca | 4164 | |
3d30b815 | 4165 | /** |
4166 | * @brief Append a character. | |
e12e4f3b | 4167 | * @param __c The character to append. |
3d30b815 | 4168 | * @return Reference to this string. |
4169 | */ | |
8f0dfb87 | 4170 | basic_string& |
f55adced | 4171 | operator+=(_CharT __c) |
bb3d96d2 | 4172 | { |
4173 | this->push_back(__c); | |
4174 | return *this; | |
4175 | } | |
1d487aca | 4176 | |
0c8766b1 | 4177 | #if __cplusplus >= 201103L |
b23fdac1 | 4178 | /** |
4179 | * @brief Append an initializer_list of characters. | |
e12e4f3b | 4180 | * @param __l The initializer_list of characters to be appended. |
b23fdac1 | 4181 | * @return Reference to this string. |
4182 | */ | |
4183 | basic_string& | |
4184 | operator+=(initializer_list<_CharT> __l) | |
e4250ca9 | 4185 | { return this->append(__l.begin(), __l.size()); } |
0c8766b1 | 4186 | #endif // C++11 |
b23fdac1 | 4187 | |
98185b9f | 4188 | #if __cplusplus >= 201703L |
805aeef7 | 4189 | /** |
4190 | * @brief Append a string_view. | |
7c78f2e6 | 4191 | * @param __svt The object convertible to string_view to be appended. |
805aeef7 | 4192 | * @return Reference to this string. |
4193 | */ | |
7c78f2e6 | 4194 | template<typename _Tp> |
4195 | _If_sv<_Tp, basic_string&> | |
4196 | operator+=(const _Tp& __svt) | |
4197 | { return this->append(__svt); } | |
805aeef7 | 4198 | #endif // C++17 |
4199 | ||
3d30b815 | 4200 | /** |
4201 | * @brief Append a string to this string. | |
e12e4f3b | 4202 | * @param __str The string to append. |
3d30b815 | 4203 | * @return Reference to this string. |
4204 | */ | |
8f0dfb87 | 4205 | basic_string& |
155be388 | 4206 | append(const basic_string& __str); |
1d487aca | 4207 | |
3d30b815 | 4208 | /** |
4209 | * @brief Append a substring. | |
e12e4f3b | 4210 | * @param __str The string to append. |
4211 | * @param __pos Index of the first character of str to append. | |
4212 | * @param __n The number of characters to append. | |
3d30b815 | 4213 | * @return Reference to this string. |
e12e4f3b | 4214 | * @throw std::out_of_range if @a __pos is not a valid index. |
3d30b815 | 4215 | * |
e12e4f3b | 4216 | * This function appends @a __n characters from @a __str |
4217 | * starting at @a __pos to this string. If @a __n is is larger | |
4218 | * than the number of available characters in @a __str, the | |
4219 | * remainder of @a __str is appended. | |
3d30b815 | 4220 | */ |
8f0dfb87 | 4221 | basic_string& |
cf3c455b | 4222 | append(const basic_string& __str, size_type __pos, size_type __n = npos); |
1d487aca | 4223 | |
3d30b815 | 4224 | /** |
4225 | * @brief Append a C substring. | |
e12e4f3b | 4226 | * @param __s The C string to append. |
4227 | * @param __n The number of characters to append. | |
3d30b815 | 4228 | * @return Reference to this string. |
4229 | */ | |
8f0dfb87 | 4230 | basic_string& |
1d487aca | 4231 | append(const _CharT* __s, size_type __n); |
4232 | ||
3d30b815 | 4233 | /** |
4234 | * @brief Append a C string. | |
e12e4f3b | 4235 | * @param __s The C string to append. |
3d30b815 | 4236 | * @return Reference to this string. |
4237 | */ | |
8f0dfb87 | 4238 | basic_string& |
1d487aca | 4239 | append(const _CharT* __s) |
bae9b8af | 4240 | { |
d570f2e9 | 4241 | __glibcxx_requires_string(__s); |
bae9b8af | 4242 | return this->append(__s, traits_type::length(__s)); |
d570f2e9 | 4243 | } |
1d487aca | 4244 | |
3d30b815 | 4245 | /** |
4246 | * @brief Append multiple characters. | |
e12e4f3b | 4247 | * @param __n The number of characters to append. |
4248 | * @param __c The character to use. | |
3d30b815 | 4249 | * @return Reference to this string. |
4250 | * | |
e12e4f3b | 4251 | * Appends __n copies of __c to this string. |
3d30b815 | 4252 | */ |
8f0dfb87 | 4253 | basic_string& |
155be388 | 4254 | append(size_type __n, _CharT __c); |
1d487aca | 4255 | |
0c8766b1 | 4256 | #if __cplusplus >= 201103L |
b23fdac1 | 4257 | /** |
4258 | * @brief Append an initializer_list of characters. | |
e12e4f3b | 4259 | * @param __l The initializer_list of characters to append. |
b23fdac1 | 4260 | * @return Reference to this string. |
4261 | */ | |
4262 | basic_string& | |
4263 | append(initializer_list<_CharT> __l) | |
e4250ca9 | 4264 | { return this->append(__l.begin(), __l.size()); } |
0c8766b1 | 4265 | #endif // C++11 |
b23fdac1 | 4266 | |
3d30b815 | 4267 | /** |
4268 | * @brief Append a range of characters. | |
e12e4f3b | 4269 | * @param __first Iterator referencing the first character to append. |
4270 | * @param __last Iterator marking the end of the range. | |
3d30b815 | 4271 | * @return Reference to this string. |
4272 | * | |
e12e4f3b | 4273 | * Appends characters in the range [__first,__last) to this string. |
3d30b815 | 4274 | */ |
1d487aca | 4275 | template<class _InputIterator> |
8f0dfb87 | 4276 | basic_string& |
1d487aca | 4277 | append(_InputIterator __first, _InputIterator __last) |
4278 | { return this->replace(_M_iend(), _M_iend(), __first, __last); } | |
4279 | ||
98185b9f | 4280 | #if __cplusplus >= 201703L |
805aeef7 | 4281 | /** |
4282 | * @brief Append a string_view. | |
7c78f2e6 | 4283 | * @param __svt The object convertible to string_view to be appended. |
805aeef7 | 4284 | * @return Reference to this string. |
4285 | */ | |
7c78f2e6 | 4286 | template<typename _Tp> |
4287 | _If_sv<_Tp, basic_string&> | |
4288 | append(const _Tp& __svt) | |
4289 | { | |
4290 | __sv_type __sv = __svt; | |
4291 | return this->append(__sv.data(), __sv.size()); | |
4292 | } | |
805aeef7 | 4293 | |
4294 | /** | |
4295 | * @brief Append a range of characters from a string_view. | |
7c78f2e6 | 4296 | * @param __svt The object convertible to string_view to be appended |
4297 | * from. | |
805aeef7 | 4298 | * @param __pos The position in the string_view to append from. |
4299 | * @param __n The number of characters to append from the string_view. | |
4300 | * @return Reference to this string. | |
4301 | */ | |
7c78f2e6 | 4302 | template<typename _Tp> |
4303 | _If_sv<_Tp, basic_string&> | |
805aeef7 | 4304 | append(const _Tp& __svt, size_type __pos, size_type __n = npos) |
4305 | { | |
4306 | __sv_type __sv = __svt; | |
4307 | return append(__sv.data() | |
809f1d63 | 4308 | + std::__sv_check(__sv.size(), __pos, "basic_string::append"), |
4309 | std::__sv_limit(__sv.size(), __pos, __n)); | |
805aeef7 | 4310 | } |
4311 | #endif // C++17 | |
4312 | ||
3d30b815 | 4313 | /** |
4314 | * @brief Append a single character. | |
e12e4f3b | 4315 | * @param __c Character to append. |
3d30b815 | 4316 | */ |
8f0dfb87 | 4317 | void |
1d487aca | 4318 | push_back(_CharT __c) |
bb3d96d2 | 4319 | { |
4320 | const size_type __len = 1 + this->size(); | |
4321 | if (__len > this->capacity() || _M_rep()->_M_is_shared()) | |
4322 | this->reserve(__len); | |
4323 | traits_type::assign(_M_data()[this->size()], __c); | |
4324 | _M_rep()->_M_set_length_and_sharable(__len); | |
4325 | } | |
1d487aca | 4326 | |
3d30b815 | 4327 | /** |
4328 | * @brief Set value to contents of another string. | |
e12e4f3b | 4329 | * @param __str Source string to use. |
3d30b815 | 4330 | * @return Reference to this string. |
4331 | */ | |
8f0dfb87 | 4332 | basic_string& |
0f5198f4 | 4333 | assign(const basic_string& __str); |
1d487aca | 4334 | |
0c8766b1 | 4335 | #if __cplusplus >= 201103L |
c20b5151 | 4336 | /** |
4337 | * @brief Set value to contents of another string. | |
e12e4f3b | 4338 | * @param __str Source string to use. |
c20b5151 | 4339 | * @return Reference to this string. |
4340 | * | |
e12e4f3b | 4341 | * This function sets this string to the exact contents of @a __str. |
4342 | * @a __str is a valid, but unspecified string. | |
c20b5151 | 4343 | */ |
4344 | basic_string& | |
4345 | assign(basic_string&& __str) | |
69fccec5 | 4346 | noexcept(allocator_traits<_Alloc>::is_always_equal::value) |
c20b5151 | 4347 | { |
4348 | this->swap(__str); | |
4349 | return *this; | |
4350 | } | |
0c8766b1 | 4351 | #endif // C++11 |
c20b5151 | 4352 | |
3d30b815 | 4353 | /** |
4354 | * @brief Set value to a substring of a string. | |
e12e4f3b | 4355 | * @param __str The string to use. |
4356 | * @param __pos Index of the first character of str. | |
4357 | * @param __n Number of characters to use. | |
3d30b815 | 4358 | * @return Reference to this string. |
4359 | * @throw std::out_of_range if @a pos is not a valid index. | |
4360 | * | |
e12e4f3b | 4361 | * This function sets this string to the substring of @a __str |
4362 | * consisting of @a __n characters at @a __pos. If @a __n is | |
4363 | * is larger than the number of available characters in @a | |
4364 | * __str, the remainder of @a __str is used. | |
3d30b815 | 4365 | */ |
8f0dfb87 | 4366 | basic_string& |
cf3c455b | 4367 | assign(const basic_string& __str, size_type __pos, size_type __n = npos) |
b97b94bb | 4368 | { return this->assign(__str._M_data() |
4369 | + __str._M_check(__pos, "basic_string::assign"), | |
4370 | __str._M_limit(__pos, __n)); } | |
1d487aca | 4371 | |
3d30b815 | 4372 | /** |
4373 | * @brief Set value to a C substring. | |
e12e4f3b | 4374 | * @param __s The C string to use. |
4375 | * @param __n Number of characters to use. | |
3d30b815 | 4376 | * @return Reference to this string. |
4377 | * | |
e12e4f3b | 4378 | * This function sets the value of this string to the first @a __n |
4379 | * characters of @a __s. If @a __n is is larger than the number of | |
4380 | * available characters in @a __s, the remainder of @a __s is used. | |
3d30b815 | 4381 | */ |
8f0dfb87 | 4382 | basic_string& |
bc4dba53 | 4383 | assign(const _CharT* __s, size_type __n); |
1d487aca | 4384 | |
3d30b815 | 4385 | /** |
4386 | * @brief Set value to contents of a C string. | |
e12e4f3b | 4387 | * @param __s The C string to use. |
3d30b815 | 4388 | * @return Reference to this string. |
4389 | * | |
e12e4f3b | 4390 | * This function sets the value of this string to the value of @a __s. |
4391 | * The data is copied, so there is no dependence on @a __s once the | |
3d30b815 | 4392 | * function returns. |
4393 | */ | |
8f0dfb87 | 4394 | basic_string& |
1d487aca | 4395 | assign(const _CharT* __s) |
bae9b8af | 4396 | { |
d570f2e9 | 4397 | __glibcxx_requires_string(__s); |
bae9b8af | 4398 | return this->assign(__s, traits_type::length(__s)); |
d570f2e9 | 4399 | } |
1d487aca | 4400 | |
3d30b815 | 4401 | /** |
4402 | * @brief Set value to multiple characters. | |
e12e4f3b | 4403 | * @param __n Length of the resulting string. |
4404 | * @param __c The character to use. | |
3d30b815 | 4405 | * @return Reference to this string. |
4406 | * | |
e12e4f3b | 4407 | * This function sets the value of this string to @a __n copies of |
4408 | * character @a __c. | |
3d30b815 | 4409 | */ |
8f0dfb87 | 4410 | basic_string& |
1d487aca | 4411 | assign(size_type __n, _CharT __c) |
49b0e9d4 | 4412 | { return _M_replace_aux(size_type(0), this->size(), __n, __c); } |
1d487aca | 4413 | |
3d30b815 | 4414 | /** |
4415 | * @brief Set value to a range of characters. | |
e12e4f3b | 4416 | * @param __first Iterator referencing the first character to append. |
4417 | * @param __last Iterator marking the end of the range. | |
3d30b815 | 4418 | * @return Reference to this string. |
4419 | * | |
e12e4f3b | 4420 | * Sets value of string to characters in the range [__first,__last). |
3d30b815 | 4421 | */ |
1d487aca | 4422 | template<class _InputIterator> |
8f0dfb87 | 4423 | basic_string& |
1d487aca | 4424 | assign(_InputIterator __first, _InputIterator __last) |
4425 | { return this->replace(_M_ibegin(), _M_iend(), __first, __last); } | |
4426 | ||
0c8766b1 | 4427 | #if __cplusplus >= 201103L |
b23fdac1 | 4428 | /** |
4429 | * @brief Set value to an initializer_list of characters. | |
e12e4f3b | 4430 | * @param __l The initializer_list of characters to assign. |
b23fdac1 | 4431 | * @return Reference to this string. |
4432 | */ | |
4433 | basic_string& | |
4434 | assign(initializer_list<_CharT> __l) | |
e4250ca9 | 4435 | { return this->assign(__l.begin(), __l.size()); } |
0c8766b1 | 4436 | #endif // C++11 |
b23fdac1 | 4437 | |
98185b9f | 4438 | #if __cplusplus >= 201703L |
805aeef7 | 4439 | /** |
4440 | * @brief Set value from a string_view. | |
7c78f2e6 | 4441 | * @param __svt The source object convertible to string_view. |
805aeef7 | 4442 | * @return Reference to this string. |
4443 | */ | |
7c78f2e6 | 4444 | template<typename _Tp> |
4445 | _If_sv<_Tp, basic_string&> | |
4446 | assign(const _Tp& __svt) | |
4447 | { | |
4448 | __sv_type __sv = __svt; | |
4449 | return this->assign(__sv.data(), __sv.size()); | |
4450 | } | |
805aeef7 | 4451 | |
4452 | /** | |
4453 | * @brief Set value from a range of characters in a string_view. | |
7c78f2e6 | 4454 | * @param __svt The source object convertible to string_view. |
805aeef7 | 4455 | * @param __pos The position in the string_view to assign from. |
4456 | * @param __n The number of characters to assign. | |
4457 | * @return Reference to this string. | |
4458 | */ | |
7c78f2e6 | 4459 | template<typename _Tp> |
4460 | _If_sv<_Tp, basic_string&> | |
4461 | assign(const _Tp& __svt, size_type __pos, size_type __n = npos) | |
805aeef7 | 4462 | { |
4463 | __sv_type __sv = __svt; | |
4464 | return assign(__sv.data() | |
809f1d63 | 4465 | + std::__sv_check(__sv.size(), __pos, "basic_string::assign"), |
4466 | std::__sv_limit(__sv.size(), __pos, __n)); | |
805aeef7 | 4467 | } |
4468 | #endif // C++17 | |
4469 | ||
3d30b815 | 4470 | /** |
4471 | * @brief Insert multiple characters. | |
e12e4f3b | 4472 | * @param __p Iterator referencing location in string to insert at. |
4473 | * @param __n Number of characters to insert | |
4474 | * @param __c The character to insert. | |
3d30b815 | 4475 | * @throw std::length_error If new length exceeds @c max_size(). |
4476 | * | |
e12e4f3b | 4477 | * Inserts @a __n copies of character @a __c starting at the |
4478 | * position referenced by iterator @a __p. If adding | |
4479 | * characters causes the length to exceed max_size(), | |
4480 | * length_error is thrown. The value of the string doesn't | |
4481 | * change if an error is thrown. | |
3d30b815 | 4482 | */ |
8f0dfb87 | 4483 | void |
1d487aca | 4484 | insert(iterator __p, size_type __n, _CharT __c) |
4485 | { this->replace(__p, __p, __n, __c); } | |
4486 | ||
3d30b815 | 4487 | /** |
4488 | * @brief Insert a range of characters. | |
e12e4f3b | 4489 | * @param __p Iterator referencing location in string to insert at. |
4490 | * @param __beg Start of range. | |
4491 | * @param __end End of range. | |
3d30b815 | 4492 | * @throw std::length_error If new length exceeds @c max_size(). |
4493 | * | |
e12e4f3b | 4494 | * Inserts characters in range [__beg,__end). If adding |
4495 | * characters causes the length to exceed max_size(), | |
4496 | * length_error is thrown. The value of the string doesn't | |
4497 | * change if an error is thrown. | |
3d30b815 | 4498 | */ |
1d487aca | 4499 | template<class _InputIterator> |
bb3d96d2 | 4500 | void |
4501 | insert(iterator __p, _InputIterator __beg, _InputIterator __end) | |
1d487aca | 4502 | { this->replace(__p, __p, __beg, __end); } |
4503 | ||
0c8766b1 | 4504 | #if __cplusplus >= 201103L |
b23fdac1 | 4505 | /** |
4506 | * @brief Insert an initializer_list of characters. | |
e12e4f3b | 4507 | * @param __p Iterator referencing location in string to insert at. |
4508 | * @param __l The initializer_list of characters to insert. | |
b23fdac1 | 4509 | * @throw std::length_error If new length exceeds @c max_size(). |
4510 | */ | |
4511 | void | |
4512 | insert(iterator __p, initializer_list<_CharT> __l) | |
e4250ca9 | 4513 | { |
4514 | _GLIBCXX_DEBUG_PEDASSERT(__p >= _M_ibegin() && __p <= _M_iend()); | |
4515 | this->insert(__p - _M_ibegin(), __l.begin(), __l.size()); | |
4516 | } | |
0c8766b1 | 4517 | #endif // C++11 |
b23fdac1 | 4518 | |
3d30b815 | 4519 | /** |
4520 | * @brief Insert value of a string. | |
c88f1c9d | 4521 | * @param __pos1 Position in string to insert at. |
e12e4f3b | 4522 | * @param __str The string to insert. |
3d30b815 | 4523 | * @return Reference to this string. |
4524 | * @throw std::length_error If new length exceeds @c max_size(). | |
4525 | * | |
e12e4f3b | 4526 | * Inserts value of @a __str starting at @a __pos1. If adding |
4527 | * characters causes the length to exceed max_size(), | |
4528 | * length_error is thrown. The value of the string doesn't | |
4529 | * change if an error is thrown. | |
3d30b815 | 4530 | */ |
8f0dfb87 | 4531 | basic_string& |
1d487aca | 4532 | insert(size_type __pos1, const basic_string& __str) |
20d663ad | 4533 | { return this->insert(__pos1, __str, size_type(0), __str.size()); } |
1d487aca | 4534 | |
3d30b815 | 4535 | /** |
4536 | * @brief Insert a substring. | |
c88f1c9d | 4537 | * @param __pos1 Position in string to insert at. |
e12e4f3b | 4538 | * @param __str The string to insert. |
4539 | * @param __pos2 Start of characters in str to insert. | |
4540 | * @param __n Number of characters to insert. | |
3d30b815 | 4541 | * @return Reference to this string. |
4542 | * @throw std::length_error If new length exceeds @c max_size(). | |
4543 | * @throw std::out_of_range If @a pos1 > size() or | |
e12e4f3b | 4544 | * @a __pos2 > @a str.size(). |
3d30b815 | 4545 | * |
e12e4f3b | 4546 | * Starting at @a pos1, insert @a __n character of @a __str |
4547 | * beginning with @a __pos2. If adding characters causes the | |
4548 | * length to exceed max_size(), length_error is thrown. If @a | |
4549 | * __pos1 is beyond the end of this string or @a __pos2 is | |
4550 | * beyond the end of @a __str, out_of_range is thrown. The | |
4551 | * value of the string doesn't change if an error is thrown. | |
3d30b815 | 4552 | */ |
8f0dfb87 | 4553 | basic_string& |
1d487aca | 4554 | insert(size_type __pos1, const basic_string& __str, |
cf3c455b | 4555 | size_type __pos2, size_type __n = npos) |
b42981f2 | 4556 | { return this->insert(__pos1, __str._M_data() |
4557 | + __str._M_check(__pos2, "basic_string::insert"), | |
4558 | __str._M_limit(__pos2, __n)); } | |
1d487aca | 4559 | |
3d30b815 | 4560 | /** |
4561 | * @brief Insert a C substring. | |
c88f1c9d | 4562 | * @param __pos Position in string to insert at. |
e12e4f3b | 4563 | * @param __s The C string to insert. |
4564 | * @param __n The number of characters to insert. | |
3d30b815 | 4565 | * @return Reference to this string. |
4566 | * @throw std::length_error If new length exceeds @c max_size(). | |
e12e4f3b | 4567 | * @throw std::out_of_range If @a __pos is beyond the end of this |
bae9b8af | 4568 | * string. |
3d30b815 | 4569 | * |
e12e4f3b | 4570 | * Inserts the first @a __n characters of @a __s starting at @a |
4571 | * __pos. If adding characters causes the length to exceed | |
4572 | * max_size(), length_error is thrown. If @a __pos is beyond | |
4573 | * end(), out_of_range is thrown. The value of the string | |
4574 | * doesn't change if an error is thrown. | |
3d30b815 | 4575 | */ |
8f0dfb87 | 4576 | basic_string& |
bc4dba53 | 4577 | insert(size_type __pos, const _CharT* __s, size_type __n); |
1d487aca | 4578 | |
3d30b815 | 4579 | /** |
4580 | * @brief Insert a C string. | |
c88f1c9d | 4581 | * @param __pos Position in string to insert at. |
e12e4f3b | 4582 | * @param __s The C string to insert. |
3d30b815 | 4583 | * @return Reference to this string. |
4584 | * @throw std::length_error If new length exceeds @c max_size(). | |
4585 | * @throw std::out_of_range If @a pos is beyond the end of this | |
4586 | * string. | |
4587 | * | |
e12e4f3b | 4588 | * Inserts the first @a n characters of @a __s starting at @a __pos. If |
3d30b815 | 4589 | * adding characters causes the length to exceed max_size(), |
e12e4f3b | 4590 | * length_error is thrown. If @a __pos is beyond end(), out_of_range is |
3d30b815 | 4591 | * thrown. The value of the string doesn't change if an error is |
4592 | * thrown. | |
4593 | */ | |
8f0dfb87 | 4594 | basic_string& |
1d487aca | 4595 | insert(size_type __pos, const _CharT* __s) |
bae9b8af | 4596 | { |
d570f2e9 | 4597 | __glibcxx_requires_string(__s); |
bae9b8af | 4598 | return this->insert(__pos, __s, traits_type::length(__s)); |
d570f2e9 | 4599 | } |
1d487aca | 4600 | |
3d30b815 | 4601 | /** |
4602 | * @brief Insert multiple characters. | |
e12e4f3b | 4603 | * @param __pos Index in string to insert at. |
4604 | * @param __n Number of characters to insert | |
4605 | * @param __c The character to insert. | |
3d30b815 | 4606 | * @return Reference to this string. |
4607 | * @throw std::length_error If new length exceeds @c max_size(). | |
e12e4f3b | 4608 | * @throw std::out_of_range If @a __pos is beyond the end of this |
3d30b815 | 4609 | * string. |
4610 | * | |
e12e4f3b | 4611 | * Inserts @a __n copies of character @a __c starting at index |
4612 | * @a __pos. If adding characters causes the length to exceed | |
4613 | * max_size(), length_error is thrown. If @a __pos > length(), | |
4614 | * out_of_range is thrown. The value of the string doesn't | |
4615 | * change if an error is thrown. | |
3d30b815 | 4616 | */ |
8f0dfb87 | 4617 | basic_string& |
1d487aca | 4618 | insert(size_type __pos, size_type __n, _CharT __c) |
20d663ad | 4619 | { return _M_replace_aux(_M_check(__pos, "basic_string::insert"), |
4620 | size_type(0), __n, __c); } | |
1d487aca | 4621 | |
3d30b815 | 4622 | /** |
4623 | * @brief Insert one character. | |
e12e4f3b | 4624 | * @param __p Iterator referencing position in string to insert at. |
4625 | * @param __c The character to insert. | |
3d30b815 | 4626 | * @return Iterator referencing newly inserted char. |
4627 | * @throw std::length_error If new length exceeds @c max_size(). | |
3d30b815 | 4628 | * |
e12e4f3b | 4629 | * Inserts character @a __c at position referenced by @a __p. |
4630 | * If adding character causes the length to exceed max_size(), | |
4631 | * length_error is thrown. If @a __p is beyond end of string, | |
4632 | * out_of_range is thrown. The value of the string doesn't | |
4633 | * change if an error is thrown. | |
3d30b815 | 4634 | */ |
8f0dfb87 | 4635 | iterator |
bf081bcd | 4636 | insert(iterator __p, _CharT __c) |
1d487aca | 4637 | { |
d570f2e9 | 4638 | _GLIBCXX_DEBUG_PEDASSERT(__p >= _M_ibegin() && __p <= _M_iend()); |
5b35e31c | 4639 | const size_type __pos = __p - _M_ibegin(); |
20d663ad | 4640 | _M_replace_aux(__pos, size_type(0), size_type(1), __c); |
8f0dfb87 | 4641 | _M_rep()->_M_set_leaked(); |
e1213465 | 4642 | return iterator(_M_data() + __pos); |
1d487aca | 4643 | } |
4644 | ||
98185b9f | 4645 | #if __cplusplus >= 201703L |
805aeef7 | 4646 | /** |
4647 | * @brief Insert a string_view. | |
c88f1c9d | 4648 | * @param __pos Position in string to insert at. |
7c78f2e6 | 4649 | * @param __svt The object convertible to string_view to insert. |
805aeef7 | 4650 | * @return Reference to this string. |
4651 | */ | |
7c78f2e6 | 4652 | template<typename _Tp> |
4653 | _If_sv<_Tp, basic_string&> | |
4654 | insert(size_type __pos, const _Tp& __svt) | |
4655 | { | |
4656 | __sv_type __sv = __svt; | |
4657 | return this->insert(__pos, __sv.data(), __sv.size()); | |
4658 | } | |
805aeef7 | 4659 | |
4660 | /** | |
4661 | * @brief Insert a string_view. | |
c88f1c9d | 4662 | * @param __pos Position in string to insert at. |
7c78f2e6 | 4663 | * @param __svt The object convertible to string_view to insert from. |
c88f1c9d | 4664 | * @param __pos Position in string_view to insert |
805aeef7 | 4665 | * from. |
4666 | * @param __n The number of characters to insert. | |
4667 | * @return Reference to this string. | |
4668 | */ | |
7c78f2e6 | 4669 | template<typename _Tp> |
4670 | _If_sv<_Tp, basic_string&> | |
4671 | insert(size_type __pos1, const _Tp& __svt, | |
805aeef7 | 4672 | size_type __pos2, size_type __n = npos) |
4673 | { | |
4674 | __sv_type __sv = __svt; | |
4675 | return this->replace(__pos1, size_type(0), __sv.data() | |
809f1d63 | 4676 | + std::__sv_check(__sv.size(), __pos2, "basic_string::insert"), |
4677 | std::__sv_limit(__sv.size(), __pos2, __n)); | |
805aeef7 | 4678 | } |
4679 | #endif // C++17 | |
4680 | ||
3d30b815 | 4681 | /** |
4682 | * @brief Remove characters. | |
e12e4f3b | 4683 | * @param __pos Index of first character to remove (default 0). |
4684 | * @param __n Number of characters to remove (default remainder). | |
3d30b815 | 4685 | * @return Reference to this string. |
4686 | * @throw std::out_of_range If @a pos is beyond the end of this | |
4687 | * string. | |
4688 | * | |
e12e4f3b | 4689 | * Removes @a __n characters from this string starting at @a |
4690 | * __pos. The length of the string is reduced by @a __n. If | |
4691 | * there are < @a __n characters to remove, the remainder of | |
4692 | * the string is truncated. If @a __p is beyond end of string, | |
4693 | * out_of_range is thrown. The value of the string doesn't | |
4694 | * change if an error is thrown. | |
3d30b815 | 4695 | */ |
8f0dfb87 | 4696 | basic_string& |
1d487aca | 4697 | erase(size_type __pos = 0, size_type __n = npos) |
cf718c6d | 4698 | { |
4699 | _M_mutate(_M_check(__pos, "basic_string::erase"), | |
4700 | _M_limit(__pos, __n), size_type(0)); | |
4701 | return *this; | |
4702 | } | |
1d487aca | 4703 | |
3d30b815 | 4704 | /** |
4705 | * @brief Remove one character. | |
e12e4f3b | 4706 | * @param __position Iterator referencing the character to remove. |
3d30b815 | 4707 | * @return iterator referencing same location after removal. |
3d30b815 | 4708 | * |
e12e4f3b | 4709 | * Removes the character at @a __position from this string. The value |
3d30b815 | 4710 | * of the string doesn't change if an error is thrown. |
4711 | */ | |
8f0dfb87 | 4712 | iterator |
1d487aca | 4713 | erase(iterator __position) |
4714 | { | |
bae9b8af | 4715 | _GLIBCXX_DEBUG_PEDASSERT(__position >= _M_ibegin() |
d570f2e9 | 4716 | && __position < _M_iend()); |
20d663ad | 4717 | const size_type __pos = __position - _M_ibegin(); |
cf718c6d | 4718 | _M_mutate(__pos, size_type(1), size_type(0)); |
8f0dfb87 | 4719 | _M_rep()->_M_set_leaked(); |
e1213465 | 4720 | return iterator(_M_data() + __pos); |
1d487aca | 4721 | } |
4722 | ||
3d30b815 | 4723 | /** |
4724 | * @brief Remove a range of characters. | |
e12e4f3b | 4725 | * @param __first Iterator referencing the first character to remove. |
4726 | * @param __last Iterator referencing the end of the range. | |
3d30b815 | 4727 | * @return Iterator referencing location of first after removal. |
3d30b815 | 4728 | * |
4729 | * Removes the characters in the range [first,last) from this string. | |
6b0afeab | 4730 | * The value of the string doesn't change if an error is thrown. |
3d30b815 | 4731 | */ |
8f0dfb87 | 4732 | iterator |
9142e59a | 4733 | erase(iterator __first, iterator __last); |
4734 | ||
0c8766b1 | 4735 | #if __cplusplus >= 201103L |
0f998edb | 4736 | /** |
4737 | * @brief Remove the last character. | |
4738 | * | |
4739 | * The string must be non-empty. | |
4740 | */ | |
4741 | void | |
da1b9e17 | 4742 | pop_back() // FIXME C++11: should be noexcept. |
ffff0e95 | 4743 | { |
6b5e6f09 | 4744 | __glibcxx_assert(!empty()); |
ffff0e95 | 4745 | erase(size() - 1, 1); |
4746 | } | |
0c8766b1 | 4747 | #endif // C++11 |
0f998edb | 4748 | |
3d30b815 | 4749 | /** |
4750 | * @brief Replace characters with value from another string. | |
e12e4f3b | 4751 | * @param __pos Index of first character to replace. |
4752 | * @param __n Number of characters to be replaced. | |
4753 | * @param __str String to insert. | |
3d30b815 | 4754 | * @return Reference to this string. |
4755 | * @throw std::out_of_range If @a pos is beyond the end of this | |
bae9b8af | 4756 | * string. |
3d30b815 | 4757 | * @throw std::length_error If new length exceeds @c max_size(). |
4758 | * | |
e12e4f3b | 4759 | * Removes the characters in the range [__pos,__pos+__n) from |
4760 | * this string. In place, the value of @a __str is inserted. | |
4761 | * If @a __pos is beyond end of string, out_of_range is thrown. | |
4762 | * If the length of the result exceeds max_size(), length_error | |
4763 | * is thrown. The value of the string doesn't change if an | |
4764 | * error is thrown. | |
3d30b815 | 4765 | */ |
8f0dfb87 | 4766 | basic_string& |
1d487aca | 4767 | replace(size_type __pos, size_type __n, const basic_string& __str) |
ee73b234 | 4768 | { return this->replace(__pos, __n, __str._M_data(), __str.size()); } |
1d487aca | 4769 | |
3d30b815 | 4770 | /** |
4771 | * @brief Replace characters with value from another string. | |
e12e4f3b | 4772 | * @param __pos1 Index of first character to replace. |
4773 | * @param __n1 Number of characters to be replaced. | |
4774 | * @param __str String to insert. | |
4775 | * @param __pos2 Index of first character of str to use. | |
4776 | * @param __n2 Number of characters from str to use. | |
3d30b815 | 4777 | * @return Reference to this string. |
e12e4f3b | 4778 | * @throw std::out_of_range If @a __pos1 > size() or @a __pos2 > |
4779 | * __str.size(). | |
3d30b815 | 4780 | * @throw std::length_error If new length exceeds @c max_size(). |
4781 | * | |
e12e4f3b | 4782 | * Removes the characters in the range [__pos1,__pos1 + n) from this |
4783 | * string. In place, the value of @a __str is inserted. If @a __pos is | |
3d30b815 | 4784 | * beyond end of string, out_of_range is thrown. If the length of the |
4785 | * result exceeds max_size(), length_error is thrown. The value of the | |
4786 | * string doesn't change if an error is thrown. | |
4787 | */ | |
8f0dfb87 | 4788 | basic_string& |
1d487aca | 4789 | replace(size_type __pos1, size_type __n1, const basic_string& __str, |
cf3c455b | 4790 | size_type __pos2, size_type __n2 = npos) |
b97b94bb | 4791 | { return this->replace(__pos1, __n1, __str._M_data() |
4792 | + __str._M_check(__pos2, "basic_string::replace"), | |
4793 | __str._M_limit(__pos2, __n2)); } | |
1d487aca | 4794 | |
3d30b815 | 4795 | /** |
4796 | * @brief Replace characters with value of a C substring. | |
e12e4f3b | 4797 | * @param __pos Index of first character to replace. |
4798 | * @param __n1 Number of characters to be replaced. | |
4799 | * @param __s C string to insert. | |
4800 | * @param __n2 Number of characters from @a s to use. | |
3d30b815 | 4801 | * @return Reference to this string. |
4802 | * @throw std::out_of_range If @a pos1 > size(). | |
4803 | * @throw std::length_error If new length exceeds @c max_size(). | |
4804 | * | |
e12e4f3b | 4805 | * Removes the characters in the range [__pos,__pos + __n1) |
4806 | * from this string. In place, the first @a __n2 characters of | |
4807 | * @a __s are inserted, or all of @a __s if @a __n2 is too large. If | |
4808 | * @a __pos is beyond end of string, out_of_range is thrown. If | |
4809 | * the length of result exceeds max_size(), length_error is | |
4810 | * thrown. The value of the string doesn't change if an error | |
4811 | * is thrown. | |
3d30b815 | 4812 | */ |
8f0dfb87 | 4813 | basic_string& |
1d487aca | 4814 | replace(size_type __pos, size_type __n1, const _CharT* __s, |
bc4dba53 | 4815 | size_type __n2); |
1d487aca | 4816 | |
3d30b815 | 4817 | /** |
4818 | * @brief Replace characters with value of a C string. | |
e12e4f3b | 4819 | * @param __pos Index of first character to replace. |
4820 | * @param __n1 Number of characters to be replaced. | |
4821 | * @param __s C string to insert. | |
3d30b815 | 4822 | * @return Reference to this string. |
4823 | * @throw std::out_of_range If @a pos > size(). | |
4824 | * @throw std::length_error If new length exceeds @c max_size(). | |
4825 | * | |
e12e4f3b | 4826 | * Removes the characters in the range [__pos,__pos + __n1) |
4827 | * from this string. In place, the characters of @a __s are | |
4828 | * inserted. If @a __pos is beyond end of string, out_of_range | |
4829 | * is thrown. If the length of result exceeds max_size(), | |
4830 | * length_error is thrown. The value of the string doesn't | |
4831 | * change if an error is thrown. | |
3d30b815 | 4832 | */ |
8f0dfb87 | 4833 | basic_string& |
1d487aca | 4834 | replace(size_type __pos, size_type __n1, const _CharT* __s) |
bae9b8af | 4835 | { |
d570f2e9 | 4836 | __glibcxx_requires_string(__s); |
bae9b8af | 4837 | return this->replace(__pos, __n1, __s, traits_type::length(__s)); |
d570f2e9 | 4838 | } |
1d487aca | 4839 | |
3d30b815 | 4840 | /** |
4841 | * @brief Replace characters with multiple characters. | |
e12e4f3b | 4842 | * @param __pos Index of first character to replace. |
4843 | * @param __n1 Number of characters to be replaced. | |
4844 | * @param __n2 Number of characters to insert. | |
4845 | * @param __c Character to insert. | |
3d30b815 | 4846 | * @return Reference to this string. |
e12e4f3b | 4847 | * @throw std::out_of_range If @a __pos > size(). |
3d30b815 | 4848 | * @throw std::length_error If new length exceeds @c max_size(). |
4849 | * | |
e12e4f3b | 4850 | * Removes the characters in the range [pos,pos + n1) from this |
4851 | * string. In place, @a __n2 copies of @a __c are inserted. | |
4852 | * If @a __pos is beyond end of string, out_of_range is thrown. | |
4853 | * If the length of result exceeds max_size(), length_error is | |
4854 | * thrown. The value of the string doesn't change if an error | |
4855 | * is thrown. | |
3d30b815 | 4856 | */ |
8f0dfb87 | 4857 | basic_string& |
1d487aca | 4858 | replace(size_type __pos, size_type __n1, size_type __n2, _CharT __c) |
20d663ad | 4859 | { return _M_replace_aux(_M_check(__pos, "basic_string::replace"), |
4860 | _M_limit(__pos, __n1), __n2, __c); } | |
1d487aca | 4861 | |
3d30b815 | 4862 | /** |
4863 | * @brief Replace range of characters with string. | |
e12e4f3b | 4864 | * @param __i1 Iterator referencing start of range to replace. |
4865 | * @param __i2 Iterator referencing end of range to replace. | |
4866 | * @param __str String value to insert. | |
3d30b815 | 4867 | * @return Reference to this string. |
4868 | * @throw std::length_error If new length exceeds @c max_size(). | |
4869 | * | |
e12e4f3b | 4870 | * Removes the characters in the range [__i1,__i2). In place, |
4871 | * the value of @a __str is inserted. If the length of result | |
4872 | * exceeds max_size(), length_error is thrown. The value of | |
4873 | * the string doesn't change if an error is thrown. | |
3d30b815 | 4874 | */ |
8f0dfb87 | 4875 | basic_string& |
1d487aca | 4876 | replace(iterator __i1, iterator __i2, const basic_string& __str) |
5b63b3b7 | 4877 | { return this->replace(__i1, __i2, __str._M_data(), __str.size()); } |
1d487aca | 4878 | |
3d30b815 | 4879 | /** |
4880 | * @brief Replace range of characters with C substring. | |
e12e4f3b | 4881 | * @param __i1 Iterator referencing start of range to replace. |
4882 | * @param __i2 Iterator referencing end of range to replace. | |
4883 | * @param __s C string value to insert. | |
4884 | * @param __n Number of characters from s to insert. | |
3d30b815 | 4885 | * @return Reference to this string. |
4886 | * @throw std::length_error If new length exceeds @c max_size(). | |
4887 | * | |
e12e4f3b | 4888 | * Removes the characters in the range [__i1,__i2). In place, |
4889 | * the first @a __n characters of @a __s are inserted. If the | |
4890 | * length of result exceeds max_size(), length_error is thrown. | |
4891 | * The value of the string doesn't change if an error is | |
4892 | * thrown. | |
3d30b815 | 4893 | */ |
8f0dfb87 | 4894 | basic_string& |
5b63b3b7 | 4895 | replace(iterator __i1, iterator __i2, const _CharT* __s, size_type __n) |
4896 | { | |
4897 | _GLIBCXX_DEBUG_PEDASSERT(_M_ibegin() <= __i1 && __i1 <= __i2 | |
bae9b8af | 4898 | && __i2 <= _M_iend()); |
5b63b3b7 | 4899 | return this->replace(__i1 - _M_ibegin(), __i2 - __i1, __s, __n); |
4900 | } | |
1d487aca | 4901 | |
3d30b815 | 4902 | /** |
4903 | * @brief Replace range of characters with C string. | |
e12e4f3b | 4904 | * @param __i1 Iterator referencing start of range to replace. |
4905 | * @param __i2 Iterator referencing end of range to replace. | |
4906 | * @param __s C string value to insert. | |
3d30b815 | 4907 | * @return Reference to this string. |
4908 | * @throw std::length_error If new length exceeds @c max_size(). | |
4909 | * | |
e12e4f3b | 4910 | * Removes the characters in the range [__i1,__i2). In place, |
4911 | * the characters of @a __s are inserted. If the length of | |
4912 | * result exceeds max_size(), length_error is thrown. The | |
4913 | * value of the string doesn't change if an error is thrown. | |
3d30b815 | 4914 | */ |
8f0dfb87 | 4915 | basic_string& |
1d487aca | 4916 | replace(iterator __i1, iterator __i2, const _CharT* __s) |
bae9b8af | 4917 | { |
d570f2e9 | 4918 | __glibcxx_requires_string(__s); |
bae9b8af | 4919 | return this->replace(__i1, __i2, __s, traits_type::length(__s)); |
d570f2e9 | 4920 | } |
1d487aca | 4921 | |
3d30b815 | 4922 | /** |
4923 | * @brief Replace range of characters with multiple characters | |
e12e4f3b | 4924 | * @param __i1 Iterator referencing start of range to replace. |
4925 | * @param __i2 Iterator referencing end of range to replace. | |
4926 | * @param __n Number of characters to insert. | |
4927 | * @param __c Character to insert. | |
3d30b815 | 4928 | * @return Reference to this string. |
4929 | * @throw std::length_error If new length exceeds @c max_size(). | |
4930 | * | |
e12e4f3b | 4931 | * Removes the characters in the range [__i1,__i2). In place, |
4932 | * @a __n copies of @a __c are inserted. If the length of | |
4933 | * result exceeds max_size(), length_error is thrown. The | |
4934 | * value of the string doesn't change if an error is thrown. | |
3d30b815 | 4935 | */ |
8f0dfb87 | 4936 | basic_string& |
90297d23 | 4937 | replace(iterator __i1, iterator __i2, size_type __n, _CharT __c) |
bae9b8af | 4938 | { |
d570f2e9 | 4939 | _GLIBCXX_DEBUG_PEDASSERT(_M_ibegin() <= __i1 && __i1 <= __i2 |
4940 | && __i2 <= _M_iend()); | |
bae9b8af | 4941 | return _M_replace_aux(__i1 - _M_ibegin(), __i2 - __i1, __n, __c); |
d570f2e9 | 4942 | } |
1d487aca | 4943 | |
3d30b815 | 4944 | /** |
4945 | * @brief Replace range of characters with range. | |
e12e4f3b | 4946 | * @param __i1 Iterator referencing start of range to replace. |
4947 | * @param __i2 Iterator referencing end of range to replace. | |
4948 | * @param __k1 Iterator referencing start of range to insert. | |
4949 | * @param __k2 Iterator referencing end of range to insert. | |
3d30b815 | 4950 | * @return Reference to this string. |
4951 | * @throw std::length_error If new length exceeds @c max_size(). | |
4952 | * | |
e12e4f3b | 4953 | * Removes the characters in the range [__i1,__i2). In place, |
4954 | * characters in the range [__k1,__k2) are inserted. If the | |
4955 | * length of result exceeds max_size(), length_error is thrown. | |
4956 | * The value of the string doesn't change if an error is | |
4957 | * thrown. | |
3d30b815 | 4958 | */ |
1d487aca | 4959 | template<class _InputIterator> |
8f0dfb87 | 4960 | basic_string& |
1d487aca | 4961 | replace(iterator __i1, iterator __i2, |
4962 | _InputIterator __k1, _InputIterator __k2) | |
bae9b8af | 4963 | { |
d570f2e9 | 4964 | _GLIBCXX_DEBUG_PEDASSERT(_M_ibegin() <= __i1 && __i1 <= __i2 |
4965 | && __i2 <= _M_iend()); | |
4966 | __glibcxx_requires_valid_range(__k1, __k2); | |
c6d6a3f2 | 4967 | typedef typename std::__is_integer<_InputIterator>::__type _Integral; |
bae9b8af | 4968 | return _M_replace_dispatch(__i1, __i2, __k1, __k2, _Integral()); |
d570f2e9 | 4969 | } |
1d487aca | 4970 | |
5ad71046 | 4971 | // Specializations for the common case of pointer and iterator: |
4972 | // useful to avoid the overhead of temporary buffering in _M_replace. | |
8f0dfb87 | 4973 | basic_string& |
9380d281 | 4974 | replace(iterator __i1, iterator __i2, _CharT* __k1, _CharT* __k2) |
4975 | { | |
4976 | _GLIBCXX_DEBUG_PEDASSERT(_M_ibegin() <= __i1 && __i1 <= __i2 | |
4977 | && __i2 <= _M_iend()); | |
4978 | __glibcxx_requires_valid_range(__k1, __k2); | |
4979 | return this->replace(__i1 - _M_ibegin(), __i2 - __i1, | |
4980 | __k1, __k2 - __k1); | |
4981 | } | |
5ad71046 | 4982 | |
8f0dfb87 | 4983 | basic_string& |
9380d281 | 4984 | replace(iterator __i1, iterator __i2, |
4985 | const _CharT* __k1, const _CharT* __k2) | |
4986 | { | |
4987 | _GLIBCXX_DEBUG_PEDASSERT(_M_ibegin() <= __i1 && __i1 <= __i2 | |
4988 | && __i2 <= _M_iend()); | |
4989 | __glibcxx_requires_valid_range(__k1, __k2); | |
4990 | return this->replace(__i1 - _M_ibegin(), __i2 - __i1, | |
4991 | __k1, __k2 - __k1); | |
4992 | } | |
5ad71046 | 4993 | |
8f0dfb87 | 4994 | basic_string& |
9380d281 | 4995 | replace(iterator __i1, iterator __i2, iterator __k1, iterator __k2) |
4996 | { | |
4997 | _GLIBCXX_DEBUG_PEDASSERT(_M_ibegin() <= __i1 && __i1 <= __i2 | |
4998 | && __i2 <= _M_iend()); | |
4999 | __glibcxx_requires_valid_range(__k1, __k2); | |
5000 | return this->replace(__i1 - _M_ibegin(), __i2 - __i1, | |
5001 | __k1.base(), __k2 - __k1); | |
5002 | } | |
5ad71046 | 5003 | |
8f0dfb87 | 5004 | basic_string& |
9380d281 | 5005 | replace(iterator __i1, iterator __i2, |
5006 | const_iterator __k1, const_iterator __k2) | |
5007 | { | |
5008 | _GLIBCXX_DEBUG_PEDASSERT(_M_ibegin() <= __i1 && __i1 <= __i2 | |
5009 | && __i2 <= _M_iend()); | |
5010 | __glibcxx_requires_valid_range(__k1, __k2); | |
5011 | return this->replace(__i1 - _M_ibegin(), __i2 - __i1, | |
5012 | __k1.base(), __k2 - __k1); | |
5013 | } | |
7c78f2e6 | 5014 | |
0c8766b1 | 5015 | #if __cplusplus >= 201103L |
b23fdac1 | 5016 | /** |
5017 | * @brief Replace range of characters with initializer_list. | |
e12e4f3b | 5018 | * @param __i1 Iterator referencing start of range to replace. |
5019 | * @param __i2 Iterator referencing end of range to replace. | |
5020 | * @param __l The initializer_list of characters to insert. | |
b23fdac1 | 5021 | * @return Reference to this string. |
5022 | * @throw std::length_error If new length exceeds @c max_size(). | |
5023 | * | |
e12e4f3b | 5024 | * Removes the characters in the range [__i1,__i2). In place, |
5025 | * characters in the range [__k1,__k2) are inserted. If the | |
5026 | * length of result exceeds max_size(), length_error is thrown. | |
5027 | * The value of the string doesn't change if an error is | |
5028 | * thrown. | |
b23fdac1 | 5029 | */ |
7ec7b3be | 5030 | basic_string& replace(iterator __i1, iterator __i2, |
5031 | initializer_list<_CharT> __l) | |
b23fdac1 | 5032 | { return this->replace(__i1, __i2, __l.begin(), __l.end()); } |
0c8766b1 | 5033 | #endif // C++11 |
b23fdac1 | 5034 | |
98185b9f | 5035 | #if __cplusplus >= 201703L |
805aeef7 | 5036 | /** |
5037 | * @brief Replace range of characters with string_view. | |
5038 | * @param __pos The position to replace at. | |
5039 | * @param __n The number of characters to replace. | |
7c78f2e6 | 5040 | * @param __svt The object convertible to string_view to insert. |
805aeef7 | 5041 | * @return Reference to this string. |
5042 | */ | |
7c78f2e6 | 5043 | template<typename _Tp> |
5044 | _If_sv<_Tp, basic_string&> | |
5045 | replace(size_type __pos, size_type __n, const _Tp& __svt) | |
5046 | { | |
5047 | __sv_type __sv = __svt; | |
5048 | return this->replace(__pos, __n, __sv.data(), __sv.size()); | |
5049 | } | |
805aeef7 | 5050 | |
5051 | /** | |
5052 | * @brief Replace range of characters with string_view. | |
5053 | * @param __pos1 The position to replace at. | |
5054 | * @param __n1 The number of characters to replace. | |
7c78f2e6 | 5055 | * @param __svt The object convertible to string_view to insert from. |
805aeef7 | 5056 | * @param __pos2 The position in the string_view to insert from. |
5057 | * @param __n2 The number of characters to insert. | |
5058 | * @return Reference to this string. | |
5059 | */ | |
7c78f2e6 | 5060 | template<typename _Tp> |
5061 | _If_sv<_Tp, basic_string&> | |
5062 | replace(size_type __pos1, size_type __n1, const _Tp& __svt, | |
805aeef7 | 5063 | size_type __pos2, size_type __n2 = npos) |
5064 | { | |
5065 | __sv_type __sv = __svt; | |
7c78f2e6 | 5066 | return this->replace(__pos1, __n1, |
809f1d63 | 5067 | __sv.data() |
5068 | + std::__sv_check(__sv.size(), __pos2, "basic_string::replace"), | |
5069 | std::__sv_limit(__sv.size(), __pos2, __n2)); | |
805aeef7 | 5070 | } |
5071 | ||
5072 | /** | |
5073 | * @brief Replace range of characters with string_view. | |
5074 | * @param __i1 An iterator referencing the start position | |
5075 | to replace at. | |
5076 | * @param __i2 An iterator referencing the end position | |
5077 | for the replace. | |
7c78f2e6 | 5078 | * @param __svt The object convertible to string_view to insert from. |
805aeef7 | 5079 | * @return Reference to this string. |
5080 | */ | |
7c78f2e6 | 5081 | template<typename _Tp> |
5082 | _If_sv<_Tp, basic_string&> | |
5083 | replace(const_iterator __i1, const_iterator __i2, const _Tp& __svt) | |
5084 | { | |
5085 | __sv_type __sv = __svt; | |
5086 | return this->replace(__i1 - begin(), __i2 - __i1, __sv); | |
5087 | } | |
805aeef7 | 5088 | #endif // C++17 |
5089 | ||
1d487aca | 5090 | private: |
90297d23 | 5091 | template<class _Integer> |
5092 | basic_string& | |
bae9b8af | 5093 | _M_replace_dispatch(iterator __i1, iterator __i2, _Integer __n, |
90297d23 | 5094 | _Integer __val, __true_type) |
49b0e9d4 | 5095 | { return _M_replace_aux(__i1 - _M_ibegin(), __i2 - __i1, __n, __val); } |
90297d23 | 5096 | |
5097 | template<class _InputIterator> | |
5098 | basic_string& | |
5099 | _M_replace_dispatch(iterator __i1, iterator __i2, _InputIterator __k1, | |
b97b94bb | 5100 | _InputIterator __k2, __false_type); |
90297d23 | 5101 | |
5102 | basic_string& | |
9a08ff02 | 5103 | _M_replace_aux(size_type __pos1, size_type __n1, size_type __n2, |
4532026e | 5104 | _CharT __c); |
90297d23 | 5105 | |
49b0e9d4 | 5106 | basic_string& |
5107 | _M_replace_safe(size_type __pos1, size_type __n1, const _CharT* __s, | |
4532026e | 5108 | size_type __n2); |
1d487aca | 5109 | |
5110 | // _S_construct_aux is used to implement the 21.3.1 para 15 which | |
5111 | // requires special behaviour if _InIter is an integral type | |
c03ec9b9 | 5112 | template<class _InIterator> |
1d487aca | 5113 | static _CharT* |
a1ea262e | 5114 | _S_construct_aux(_InIterator __beg, _InIterator __end, |
5115 | const _Alloc& __a, __false_type) | |
1d487aca | 5116 | { |
c03ec9b9 | 5117 | typedef typename iterator_traits<_InIterator>::iterator_category _Tag; |
1d487aca | 5118 | return _S_construct(__beg, __end, __a, _Tag()); |
5119 | } | |
8f0dfb87 | 5120 | |
03fd0663 | 5121 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
5122 | // 438. Ambiguity in the "do the right thing" clause | |
5123 | template<class _Integer> | |
1d487aca | 5124 | static _CharT* |
03fd0663 | 5125 | _S_construct_aux(_Integer __beg, _Integer __end, |
a1ea262e | 5126 | const _Alloc& __a, __true_type) |
ea1f3878 | 5127 | { return _S_construct_aux_2(static_cast<size_type>(__beg), |
5128 | __end, __a); } | |
5129 | ||
5130 | static _CharT* | |
5131 | _S_construct_aux_2(size_type __req, _CharT __c, const _Alloc& __a) | |
5132 | { return _S_construct(__req, __c, __a); } | |
8f0dfb87 | 5133 | |
c03ec9b9 | 5134 | template<class _InIterator> |
1d487aca | 5135 | static _CharT* |
c03ec9b9 | 5136 | _S_construct(_InIterator __beg, _InIterator __end, const _Alloc& __a) |
1d487aca | 5137 | { |
c6d6a3f2 | 5138 | typedef typename std::__is_integer<_InIterator>::__type _Integral; |
1d487aca | 5139 | return _S_construct_aux(__beg, __end, __a, _Integral()); |
5140 | } | |
5141 | ||
5142 | // For Input Iterators, used in istreambuf_iterators, etc. | |
c03ec9b9 | 5143 | template<class _InIterator> |
1d487aca | 5144 | static _CharT* |
c03ec9b9 | 5145 | _S_construct(_InIterator __beg, _InIterator __end, const _Alloc& __a, |
1d487aca | 5146 | input_iterator_tag); |
8f0dfb87 | 5147 | |
1d487aca | 5148 | // For forward_iterators up to random_access_iterators, used for |
5149 | // string::iterator, _CharT*, etc. | |
c03ec9b9 | 5150 | template<class _FwdIterator> |
1d487aca | 5151 | static _CharT* |
c03ec9b9 | 5152 | _S_construct(_FwdIterator __beg, _FwdIterator __end, const _Alloc& __a, |
1d487aca | 5153 | forward_iterator_tag); |
5154 | ||
8f0dfb87 | 5155 | static _CharT* |
1d487aca | 5156 | _S_construct(size_type __req, _CharT __c, const _Alloc& __a); |
5157 | ||
5158 | public: | |
5159 | ||
3d30b815 | 5160 | /** |
5161 | * @brief Copy substring into C string. | |
e12e4f3b | 5162 | * @param __s C string to copy value into. |
5163 | * @param __n Number of characters to copy. | |
5164 | * @param __pos Index of first character to copy. | |
3d30b815 | 5165 | * @return Number of characters actually copied |
e12e4f3b | 5166 | * @throw std::out_of_range If __pos > size(). |
3d30b815 | 5167 | * |
e12e4f3b | 5168 | * Copies up to @a __n characters starting at @a __pos into the |
5169 | * C string @a __s. If @a __pos is %greater than size(), | |
5170 | * out_of_range is thrown. | |
3d30b815 | 5171 | */ |
8f0dfb87 | 5172 | size_type |
1d487aca | 5173 | copy(_CharT* __s, size_type __n, size_type __pos = 0) const; |
5174 | ||
3d30b815 | 5175 | /** |
5176 | * @brief Swap contents with another string. | |
e12e4f3b | 5177 | * @param __s String to swap with. |
3d30b815 | 5178 | * |
e12e4f3b | 5179 | * Exchanges the contents of this string with that of @a __s in constant |
3d30b815 | 5180 | * time. |
5181 | */ | |
8f0dfb87 | 5182 | void |
7966d2b9 | 5183 | swap(basic_string& __s) |
5184 | _GLIBCXX_NOEXCEPT_IF(allocator_traits<_Alloc>::is_always_equal::value); | |
1d487aca | 5185 | |
5186 | // String operations: | |
3d30b815 | 5187 | /** |
5188 | * @brief Return const pointer to null-terminated contents. | |
5189 | * | |
5190 | * This is a handle to internal data. Do not modify or dire things may | |
5191 | * happen. | |
5192 | */ | |
8f0dfb87 | 5193 | const _CharT* |
9112175a | 5194 | c_str() const _GLIBCXX_NOEXCEPT |
f55adced | 5195 | { return _M_data(); } |
1d487aca | 5196 | |
3d30b815 | 5197 | /** |
5198 | * @brief Return const pointer to contents. | |
5199 | * | |
bd17928e | 5200 | * This is a pointer to internal data. It is undefined to modify |
5201 | * the contents through the returned pointer. To get a pointer that | |
5202 | * allows modifying the contents use @c &str[0] instead, | |
5203 | * (or in C++17 the non-const @c str.data() overload). | |
3d30b815 | 5204 | */ |
8f0dfb87 | 5205 | const _CharT* |
9112175a | 5206 | data() const _GLIBCXX_NOEXCEPT |
f55adced | 5207 | { return _M_data(); } |
1d487aca | 5208 | |
98185b9f | 5209 | #if __cplusplus >= 201703L |
bd17928e | 5210 | /** |
5211 | * @brief Return non-const pointer to contents. | |
5212 | * | |
5213 | * This is a pointer to the character sequence held by the string. | |
5214 | * Modifying the characters in the sequence is allowed. | |
5215 | */ | |
5216 | _CharT* | |
5217 | data() noexcept | |
309500a2 | 5218 | { |
5219 | _M_leak(); | |
5220 | return _M_data(); | |
5221 | } | |
bd17928e | 5222 | #endif |
5223 | ||
3d30b815 | 5224 | /** |
5225 | * @brief Return copy of allocator used to construct this string. | |
5226 | */ | |
8f0dfb87 | 5227 | allocator_type |
9112175a | 5228 | get_allocator() const _GLIBCXX_NOEXCEPT |
f55adced | 5229 | { return _M_dataplus; } |
1d487aca | 5230 | |
3d30b815 | 5231 | /** |
5232 | * @brief Find position of a C substring. | |
e12e4f3b | 5233 | * @param __s C string to locate. |
5234 | * @param __pos Index of character to search from. | |
5235 | * @param __n Number of characters from @a s to search for. | |
3d30b815 | 5236 | * @return Index of start of first occurrence. |
5237 | * | |
e12e4f3b | 5238 | * Starting from @a __pos, searches forward for the first @a |
5239 | * __n characters in @a __s within this string. If found, | |
5240 | * returns the index where it begins. If not found, returns | |
5241 | * npos. | |
3d30b815 | 5242 | */ |
8f0dfb87 | 5243 | size_type |
5b479470 | 5244 | find(const _CharT* __s, size_type __pos, size_type __n) const |
5245 | _GLIBCXX_NOEXCEPT; | |
1d487aca | 5246 | |
3d30b815 | 5247 | /** |
5248 | * @brief Find position of a string. | |
e12e4f3b | 5249 | * @param __str String to locate. |
5250 | * @param __pos Index of character to search from (default 0). | |
3d30b815 | 5251 | * @return Index of start of first occurrence. |
5252 | * | |
e12e4f3b | 5253 | * Starting from @a __pos, searches forward for value of @a __str within |
3d30b815 | 5254 | * this string. If found, returns the index where it begins. If not |
5255 | * found, returns npos. | |
5256 | */ | |
8f0dfb87 | 5257 | size_type |
1d487aca | 5258 | find(const basic_string& __str, size_type __pos = 0) const |
5b479470 | 5259 | _GLIBCXX_NOEXCEPT |
1d487aca | 5260 | { return this->find(__str.data(), __pos, __str.size()); } |
5261 | ||
3d30b815 | 5262 | /** |
5263 | * @brief Find position of a C string. | |
e12e4f3b | 5264 | * @param __s C string to locate. |
5265 | * @param __pos Index of character to search from (default 0). | |
3d30b815 | 5266 | * @return Index of start of first occurrence. |
5267 | * | |
e12e4f3b | 5268 | * Starting from @a __pos, searches forward for the value of @a |
5269 | * __s within this string. If found, returns the index where | |
5270 | * it begins. If not found, returns npos. | |
3d30b815 | 5271 | */ |
8f0dfb87 | 5272 | size_type |
5b479470 | 5273 | find(const _CharT* __s, size_type __pos = 0) const _GLIBCXX_NOEXCEPT |
bae9b8af | 5274 | { |
d570f2e9 | 5275 | __glibcxx_requires_string(__s); |
bae9b8af | 5276 | return this->find(__s, __pos, traits_type::length(__s)); |
d570f2e9 | 5277 | } |
1d487aca | 5278 | |
3d30b815 | 5279 | /** |
5280 | * @brief Find position of a character. | |
e12e4f3b | 5281 | * @param __c Character to locate. |
5282 | * @param __pos Index of character to search from (default 0). | |
3d30b815 | 5283 | * @return Index of first occurrence. |
5284 | * | |
e12e4f3b | 5285 | * Starting from @a __pos, searches forward for @a __c within |
5286 | * this string. If found, returns the index where it was | |
5287 | * found. If not found, returns npos. | |
3d30b815 | 5288 | */ |
8f0dfb87 | 5289 | size_type |
9112175a | 5290 | find(_CharT __c, size_type __pos = 0) const _GLIBCXX_NOEXCEPT; |
1d487aca | 5291 | |
98185b9f | 5292 | #if __cplusplus >= 201703L |
805aeef7 | 5293 | /** |
5294 | * @brief Find position of a string_view. | |
7c78f2e6 | 5295 | * @param __svt The object convertible to string_view to locate. |
805aeef7 | 5296 | * @param __pos Index of character to search from (default 0). |
5297 | * @return Index of start of first occurrence. | |
5298 | */ | |
7c78f2e6 | 5299 | template<typename _Tp> |
5300 | _If_sv<_Tp, size_type> | |
5301 | find(const _Tp& __svt, size_type __pos = 0) const | |
5302 | noexcept(is_same<_Tp, __sv_type>::value) | |
5303 | { | |
5304 | __sv_type __sv = __svt; | |
5305 | return this->find(__sv.data(), __pos, __sv.size()); | |
5306 | } | |
805aeef7 | 5307 | #endif // C++17 |
5308 | ||
3d30b815 | 5309 | /** |
5310 | * @brief Find last position of a string. | |
e12e4f3b | 5311 | * @param __str String to locate. |
5312 | * @param __pos Index of character to search back from (default end). | |
3d30b815 | 5313 | * @return Index of start of last occurrence. |
5314 | * | |
e12e4f3b | 5315 | * Starting from @a __pos, searches backward for value of @a |
5316 | * __str within this string. If found, returns the index where | |
5317 | * it begins. If not found, returns npos. | |
3d30b815 | 5318 | */ |
8f0dfb87 | 5319 | size_type |
1d487aca | 5320 | rfind(const basic_string& __str, size_type __pos = npos) const |
5b479470 | 5321 | _GLIBCXX_NOEXCEPT |
1d487aca | 5322 | { return this->rfind(__str.data(), __pos, __str.size()); } |
5323 | ||
3d30b815 | 5324 | /** |
5325 | * @brief Find last position of a C substring. | |
e12e4f3b | 5326 | * @param __s C string to locate. |
5327 | * @param __pos Index of character to search back from. | |
5328 | * @param __n Number of characters from s to search for. | |
3d30b815 | 5329 | * @return Index of start of last occurrence. |
5330 | * | |
e12e4f3b | 5331 | * Starting from @a __pos, searches backward for the first @a |
5332 | * __n characters in @a __s within this string. If found, | |
5333 | * returns the index where it begins. If not found, returns | |
5334 | * npos. | |
3d30b815 | 5335 | */ |
8f0dfb87 | 5336 | size_type |
5b479470 | 5337 | rfind(const _CharT* __s, size_type __pos, size_type __n) const |
5338 | _GLIBCXX_NOEXCEPT; | |
1d487aca | 5339 | |
3d30b815 | 5340 | /** |
5341 | * @brief Find last position of a C string. | |
e12e4f3b | 5342 | * @param __s C string to locate. |
5343 | * @param __pos Index of character to start search at (default end). | |
3d30b815 | 5344 | * @return Index of start of last occurrence. |
5345 | * | |
e12e4f3b | 5346 | * Starting from @a __pos, searches backward for the value of |
5347 | * @a __s within this string. If found, returns the index | |
5348 | * where it begins. If not found, returns npos. | |
3d30b815 | 5349 | */ |
8f0dfb87 | 5350 | size_type |
5b479470 | 5351 | rfind(const _CharT* __s, size_type __pos = npos) const _GLIBCXX_NOEXCEPT |
bae9b8af | 5352 | { |
d570f2e9 | 5353 | __glibcxx_requires_string(__s); |
bae9b8af | 5354 | return this->rfind(__s, __pos, traits_type::length(__s)); |
d570f2e9 | 5355 | } |
1d487aca | 5356 | |
3d30b815 | 5357 | /** |
5358 | * @brief Find last position of a character. | |
e12e4f3b | 5359 | * @param __c Character to locate. |
5360 | * @param __pos Index of character to search back from (default end). | |
3d30b815 | 5361 | * @return Index of last occurrence. |
5362 | * | |
e12e4f3b | 5363 | * Starting from @a __pos, searches backward for @a __c within |
5364 | * this string. If found, returns the index where it was | |
5365 | * found. If not found, returns npos. | |
3d30b815 | 5366 | */ |
8f0dfb87 | 5367 | size_type |
9112175a | 5368 | rfind(_CharT __c, size_type __pos = npos) const _GLIBCXX_NOEXCEPT; |
1d487aca | 5369 | |
98185b9f | 5370 | #if __cplusplus >= 201703L |
805aeef7 | 5371 | /** |
5372 | * @brief Find last position of a string_view. | |
7c78f2e6 | 5373 | * @param __svt The object convertible to string_view to locate. |
805aeef7 | 5374 | * @param __pos Index of character to search back from (default end). |
5375 | * @return Index of start of last occurrence. | |
5376 | */ | |
7c78f2e6 | 5377 | template<typename _Tp> |
5378 | _If_sv<_Tp, size_type> | |
5379 | rfind(const _Tp& __svt, size_type __pos = npos) const | |
5380 | noexcept(is_same<_Tp, __sv_type>::value) | |
5381 | { | |
5382 | __sv_type __sv = __svt; | |
5383 | return this->rfind(__sv.data(), __pos, __sv.size()); | |
5384 | } | |
805aeef7 | 5385 | #endif // C++17 |
5386 | ||
3d30b815 | 5387 | /** |
5388 | * @brief Find position of a character of string. | |
e12e4f3b | 5389 | * @param __str String containing characters to locate. |
5390 | * @param __pos Index of character to search from (default 0). | |
3d30b815 | 5391 | * @return Index of first occurrence. |
5392 | * | |
e12e4f3b | 5393 | * Starting from @a __pos, searches forward for one of the |
5394 | * characters of @a __str within this string. If found, | |
5395 | * returns the index where it was found. If not found, returns | |
5396 | * npos. | |
3d30b815 | 5397 | */ |
8f0dfb87 | 5398 | size_type |
1d487aca | 5399 | find_first_of(const basic_string& __str, size_type __pos = 0) const |
5b479470 | 5400 | _GLIBCXX_NOEXCEPT |
1d487aca | 5401 | { return this->find_first_of(__str.data(), __pos, __str.size()); } |
5402 | ||
3d30b815 | 5403 | /** |
5404 | * @brief Find position of a character of C substring. | |
e12e4f3b | 5405 | * @param __s String containing characters to locate. |
5406 | * @param __pos Index of character to search from. | |
5407 | * @param __n Number of characters from s to search for. | |
3d30b815 | 5408 | * @return Index of first occurrence. |
5409 | * | |
e12e4f3b | 5410 | * Starting from @a __pos, searches forward for one of the |
5411 | * first @a __n characters of @a __s within this string. If | |
5412 | * found, returns the index where it was found. If not found, | |
5413 | * returns npos. | |
3d30b815 | 5414 | */ |
8f0dfb87 | 5415 | size_type |
5b479470 | 5416 | find_first_of(const _CharT* __s, size_type __pos, size_type __n) const |
5417 | _GLIBCXX_NOEXCEPT; | |
1d487aca | 5418 | |
3d30b815 | 5419 | /** |
5420 | * @brief Find position of a character of C string. | |
e12e4f3b | 5421 | * @param __s String containing characters to locate. |
5422 | * @param __pos Index of character to search from (default 0). | |
3d30b815 | 5423 | * @return Index of first occurrence. |
5424 | * | |
e12e4f3b | 5425 | * Starting from @a __pos, searches forward for one of the |
5426 | * characters of @a __s within this string. If found, returns | |
5427 | * the index where it was found. If not found, returns npos. | |
3d30b815 | 5428 | */ |
8f0dfb87 | 5429 | size_type |
1d487aca | 5430 | find_first_of(const _CharT* __s, size_type __pos = 0) const |
5b479470 | 5431 | _GLIBCXX_NOEXCEPT |
bae9b8af | 5432 | { |
d570f2e9 | 5433 | __glibcxx_requires_string(__s); |
bae9b8af | 5434 | return this->find_first_of(__s, __pos, traits_type::length(__s)); |
d570f2e9 | 5435 | } |
1d487aca | 5436 | |
3d30b815 | 5437 | /** |
5438 | * @brief Find position of a character. | |
e12e4f3b | 5439 | * @param __c Character to locate. |
5440 | * @param __pos Index of character to search from (default 0). | |
3d30b815 | 5441 | * @return Index of first occurrence. |
5442 | * | |
e12e4f3b | 5443 | * Starting from @a __pos, searches forward for the character |
5444 | * @a __c within this string. If found, returns the index | |
5445 | * where it was found. If not found, returns npos. | |
3d30b815 | 5446 | * |
e12e4f3b | 5447 | * Note: equivalent to find(__c, __pos). |
3d30b815 | 5448 | */ |
8f0dfb87 | 5449 | size_type |
9112175a | 5450 | find_first_of(_CharT __c, size_type __pos = 0) const _GLIBCXX_NOEXCEPT |
1d487aca | 5451 | { return this->find(__c, __pos); } |
5452 | ||
98185b9f | 5453 | #if __cplusplus >= 201703L |
805aeef7 | 5454 | /** |
5455 | * @brief Find position of a character of a string_view. | |
7c78f2e6 | 5456 | * @param __svt An object convertible to string_view containing |
5457 | * characters to locate. | |
805aeef7 | 5458 | * @param __pos Index of character to search from (default 0). |
5459 | * @return Index of first occurrence. | |
5460 | */ | |
7c78f2e6 | 5461 | template<typename _Tp> |
5462 | _If_sv<_Tp, size_type> | |
5463 | find_first_of(const _Tp& __svt, size_type __pos = 0) const | |
5464 | noexcept(is_same<_Tp, __sv_type>::value) | |
5465 | { | |
5466 | __sv_type __sv = __svt; | |
5467 | return this->find_first_of(__sv.data(), __pos, __sv.size()); | |
5468 | } | |
805aeef7 | 5469 | #endif // C++17 |
5470 | ||
3d30b815 | 5471 | /** |
5472 | * @brief Find last position of a character of string. | |
e12e4f3b | 5473 | * @param __str String containing characters to locate. |
5474 | * @param __pos Index of character to search back from (default end). | |
3d30b815 | 5475 | * @return Index of last occurrence. |
5476 | * | |
e12e4f3b | 5477 | * Starting from @a __pos, searches backward for one of the |
5478 | * characters of @a __str within this string. If found, | |
5479 | * returns the index where it was found. If not found, returns | |
5480 | * npos. | |
3d30b815 | 5481 | */ |
8f0dfb87 | 5482 | size_type |
1d487aca | 5483 | find_last_of(const basic_string& __str, size_type __pos = npos) const |
5b479470 | 5484 | _GLIBCXX_NOEXCEPT |
1d487aca | 5485 | { return this->find_last_of(__str.data(), __pos, __str.size()); } |
5486 | ||
3d30b815 | 5487 | /** |
5488 | * @brief Find last position of a character of C substring. | |
e12e4f3b | 5489 | * @param __s C string containing characters to locate. |
5490 | * @param __pos Index of character to search back from. | |
5491 | * @param __n Number of characters from s to search for. | |
3d30b815 | 5492 | * @return Index of last occurrence. |
5493 | * | |
e12e4f3b | 5494 | * Starting from @a __pos, searches backward for one of the |
5495 | * first @a __n characters of @a __s within this string. If | |
5496 | * found, returns the index where it was found. If not found, | |
5497 | * returns npos. | |
3d30b815 | 5498 | */ |
8f0dfb87 | 5499 | size_type |
5b479470 | 5500 | find_last_of(const _CharT* __s, size_type __pos, size_type __n) const |
5501 | _GLIBCXX_NOEXCEPT; | |
1d487aca | 5502 | |
3d30b815 | 5503 | /** |
5504 | * @brief Find last position of a character of C string. | |
e12e4f3b | 5505 | * @param __s C string containing characters to locate. |
5506 | * @param __pos Index of character to search back from (default end). | |
3d30b815 | 5507 | * @return Index of last occurrence. |
5508 | * | |
e12e4f3b | 5509 | * Starting from @a __pos, searches backward for one of the |
5510 | * characters of @a __s within this string. If found, returns | |
5511 | * the index where it was found. If not found, returns npos. | |
3d30b815 | 5512 | */ |
8f0dfb87 | 5513 | size_type |
1d487aca | 5514 | find_last_of(const _CharT* __s, size_type __pos = npos) const |
5b479470 | 5515 | _GLIBCXX_NOEXCEPT |
bae9b8af | 5516 | { |
d570f2e9 | 5517 | __glibcxx_requires_string(__s); |
bae9b8af | 5518 | return this->find_last_of(__s, __pos, traits_type::length(__s)); |
d570f2e9 | 5519 | } |
1d487aca | 5520 | |
3d30b815 | 5521 | /** |
5522 | * @brief Find last position of a character. | |
e12e4f3b | 5523 | * @param __c Character to locate. |
5524 | * @param __pos Index of character to search back from (default end). | |
3d30b815 | 5525 | * @return Index of last occurrence. |
5526 | * | |
e12e4f3b | 5527 | * Starting from @a __pos, searches backward for @a __c within |
5528 | * this string. If found, returns the index where it was | |
5529 | * found. If not found, returns npos. | |
3d30b815 | 5530 | * |
e12e4f3b | 5531 | * Note: equivalent to rfind(__c, __pos). |
3d30b815 | 5532 | */ |
8f0dfb87 | 5533 | size_type |
9112175a | 5534 | find_last_of(_CharT __c, size_type __pos = npos) const _GLIBCXX_NOEXCEPT |
1d487aca | 5535 | { return this->rfind(__c, __pos); } |
5536 | ||
98185b9f | 5537 | #if __cplusplus >= 201703L |
805aeef7 | 5538 | /** |
5539 | * @brief Find last position of a character of string. | |
7c78f2e6 | 5540 | * @param __svt An object convertible to string_view containing |
5541 | * characters to locate. | |
805aeef7 | 5542 | * @param __pos Index of character to search back from (default end). |
5543 | * @return Index of last occurrence. | |
5544 | */ | |
7c78f2e6 | 5545 | template<typename _Tp> |
5546 | _If_sv<_Tp, size_type> | |
5547 | find_last_of(const _Tp& __svt, size_type __pos = npos) const | |
5548 | noexcept(is_same<_Tp, __sv_type>::value) | |
5549 | { | |
5550 | __sv_type __sv = __svt; | |
5551 | return this->find_last_of(__sv.data(), __pos, __sv.size()); | |
5552 | } | |
805aeef7 | 5553 | #endif // C++17 |
5554 | ||
3d30b815 | 5555 | /** |
5556 | * @brief Find position of a character not in string. | |
e12e4f3b | 5557 | * @param __str String containing characters to avoid. |
5558 | * @param __pos Index of character to search from (default 0). | |
3d30b815 | 5559 | * @return Index of first occurrence. |
5560 | * | |
e12e4f3b | 5561 | * Starting from @a __pos, searches forward for a character not contained |
5562 | * in @a __str within this string. If found, returns the index where it | |
3d30b815 | 5563 | * was found. If not found, returns npos. |
5564 | */ | |
8f0dfb87 | 5565 | size_type |
1d487aca | 5566 | find_first_not_of(const basic_string& __str, size_type __pos = 0) const |
5b479470 | 5567 | _GLIBCXX_NOEXCEPT |
1d487aca | 5568 | { return this->find_first_not_of(__str.data(), __pos, __str.size()); } |
5569 | ||
3d30b815 | 5570 | /** |
5571 | * @brief Find position of a character not in C substring. | |
e12e4f3b | 5572 | * @param __s C string containing characters to avoid. |
5573 | * @param __pos Index of character to search from. | |
5574 | * @param __n Number of characters from __s to consider. | |
3d30b815 | 5575 | * @return Index of first occurrence. |
5576 | * | |
e12e4f3b | 5577 | * Starting from @a __pos, searches forward for a character not |
5578 | * contained in the first @a __n characters of @a __s within | |
5579 | * this string. If found, returns the index where it was | |
5580 | * found. If not found, returns npos. | |
3d30b815 | 5581 | */ |
8f0dfb87 | 5582 | size_type |
5583 | find_first_not_of(const _CharT* __s, size_type __pos, | |
5b479470 | 5584 | size_type __n) const _GLIBCXX_NOEXCEPT; |
1d487aca | 5585 | |
3d30b815 | 5586 | /** |
5587 | * @brief Find position of a character not in C string. | |
e12e4f3b | 5588 | * @param __s C string containing characters to avoid. |
5589 | * @param __pos Index of character to search from (default 0). | |
3d30b815 | 5590 | * @return Index of first occurrence. |
5591 | * | |
e12e4f3b | 5592 | * Starting from @a __pos, searches forward for a character not |
5593 | * contained in @a __s within this string. If found, returns | |
5594 | * the index where it was found. If not found, returns npos. | |
3d30b815 | 5595 | */ |
8f0dfb87 | 5596 | size_type |
1d487aca | 5597 | find_first_not_of(const _CharT* __s, size_type __pos = 0) const |
5b479470 | 5598 | _GLIBCXX_NOEXCEPT |
bae9b8af | 5599 | { |
d570f2e9 | 5600 | __glibcxx_requires_string(__s); |
bae9b8af | 5601 | return this->find_first_not_of(__s, __pos, traits_type::length(__s)); |
d570f2e9 | 5602 | } |
1d487aca | 5603 | |
3d30b815 | 5604 | /** |
5605 | * @brief Find position of a different character. | |
e12e4f3b | 5606 | * @param __c Character to avoid. |
5607 | * @param __pos Index of character to search from (default 0). | |
3d30b815 | 5608 | * @return Index of first occurrence. |
5609 | * | |
e12e4f3b | 5610 | * Starting from @a __pos, searches forward for a character |
5611 | * other than @a __c within this string. If found, returns the | |
5612 | * index where it was found. If not found, returns npos. | |
3d30b815 | 5613 | */ |
8f0dfb87 | 5614 | size_type |
9112175a | 5615 | find_first_not_of(_CharT __c, size_type __pos = 0) const |
5b479470 | 5616 | _GLIBCXX_NOEXCEPT; |
1d487aca | 5617 | |
98185b9f | 5618 | #if __cplusplus >= 201703L |
805aeef7 | 5619 | /** |
5620 | * @brief Find position of a character not in a string_view. | |
7c78f2e6 | 5621 | * @param __svt An object convertible to string_view containing |
5622 | * characters to avoid. | |
805aeef7 | 5623 | * @param __pos Index of character to search from (default 0). |
5624 | * @return Index of first occurrence. | |
5625 | */ | |
7c78f2e6 | 5626 | template<typename _Tp> |
5627 | _If_sv<_Tp, size_type> | |
5628 | find_first_not_of(const _Tp& __svt, size_type __pos = 0) const | |
5629 | noexcept(is_same<_Tp, __sv_type>::value) | |
5630 | { | |
5631 | __sv_type __sv = __svt; | |
5632 | return this->find_first_not_of(__sv.data(), __pos, __sv.size()); | |
5633 | } | |
805aeef7 | 5634 | #endif // C++17 |
5635 | ||
3d30b815 | 5636 | /** |
5637 | * @brief Find last position of a character not in string. | |
e12e4f3b | 5638 | * @param __str String containing characters to avoid. |
5639 | * @param __pos Index of character to search back from (default end). | |
fa826926 | 5640 | * @return Index of last occurrence. |
3d30b815 | 5641 | * |
e12e4f3b | 5642 | * Starting from @a __pos, searches backward for a character |
5643 | * not contained in @a __str within this string. If found, | |
5644 | * returns the index where it was found. If not found, returns | |
5645 | * npos. | |
3d30b815 | 5646 | */ |
8f0dfb87 | 5647 | size_type |
1d487aca | 5648 | find_last_not_of(const basic_string& __str, size_type __pos = npos) const |
5b479470 | 5649 | _GLIBCXX_NOEXCEPT |
1d487aca | 5650 | { return this->find_last_not_of(__str.data(), __pos, __str.size()); } |
5651 | ||
3d30b815 | 5652 | /** |
5653 | * @brief Find last position of a character not in C substring. | |
e12e4f3b | 5654 | * @param __s C string containing characters to avoid. |
5655 | * @param __pos Index of character to search back from. | |
5656 | * @param __n Number of characters from s to consider. | |
fa826926 | 5657 | * @return Index of last occurrence. |
3d30b815 | 5658 | * |
e12e4f3b | 5659 | * Starting from @a __pos, searches backward for a character not |
5660 | * contained in the first @a __n characters of @a __s within this string. | |
3d30b815 | 5661 | * If found, returns the index where it was found. If not found, |
5662 | * returns npos. | |
5663 | */ | |
8f0dfb87 | 5664 | size_type |
5665 | find_last_not_of(const _CharT* __s, size_type __pos, | |
5b479470 | 5666 | size_type __n) const _GLIBCXX_NOEXCEPT; |
3d30b815 | 5667 | /** |
fa826926 | 5668 | * @brief Find last position of a character not in C string. |
e12e4f3b | 5669 | * @param __s C string containing characters to avoid. |
5670 | * @param __pos Index of character to search back from (default end). | |
fa826926 | 5671 | * @return Index of last occurrence. |
3d30b815 | 5672 | * |
e12e4f3b | 5673 | * Starting from @a __pos, searches backward for a character |
5674 | * not contained in @a __s within this string. If found, | |
5675 | * returns the index where it was found. If not found, returns | |
5676 | * npos. | |
3d30b815 | 5677 | */ |
8f0dfb87 | 5678 | size_type |
1d487aca | 5679 | find_last_not_of(const _CharT* __s, size_type __pos = npos) const |
5b479470 | 5680 | _GLIBCXX_NOEXCEPT |
bae9b8af | 5681 | { |
d570f2e9 | 5682 | __glibcxx_requires_string(__s); |
bae9b8af | 5683 | return this->find_last_not_of(__s, __pos, traits_type::length(__s)); |
d570f2e9 | 5684 | } |
1d487aca | 5685 | |
3d30b815 | 5686 | /** |
5687 | * @brief Find last position of a different character. | |
e12e4f3b | 5688 | * @param __c Character to avoid. |
5689 | * @param __pos Index of character to search back from (default end). | |
fa826926 | 5690 | * @return Index of last occurrence. |
3d30b815 | 5691 | * |
e12e4f3b | 5692 | * Starting from @a __pos, searches backward for a character other than |
5693 | * @a __c within this string. If found, returns the index where it was | |
3d30b815 | 5694 | * found. If not found, returns npos. |
5695 | */ | |
8f0dfb87 | 5696 | size_type |
9112175a | 5697 | find_last_not_of(_CharT __c, size_type __pos = npos) const |
5b479470 | 5698 | _GLIBCXX_NOEXCEPT; |
1d487aca | 5699 | |
98185b9f | 5700 | #if __cplusplus >= 201703L |
805aeef7 | 5701 | /** |
5702 | * @brief Find last position of a character not in a string_view. | |
7c78f2e6 | 5703 | * @param __svt An object convertible to string_view containing |
5704 | * characters to avoid. | |
805aeef7 | 5705 | * @param __pos Index of character to search back from (default end). |
5706 | * @return Index of last occurrence. | |
5707 | */ | |
7c78f2e6 | 5708 | template<typename _Tp> |
5709 | _If_sv<_Tp, size_type> | |
5710 | find_last_not_of(const _Tp& __svt, size_type __pos = npos) const | |
5711 | noexcept(is_same<_Tp, __sv_type>::value) | |
5712 | { | |
5713 | __sv_type __sv = __svt; | |
5714 | return this->find_last_not_of(__sv.data(), __pos, __sv.size()); | |
5715 | } | |
805aeef7 | 5716 | #endif // C++17 |
5717 | ||
3d30b815 | 5718 | /** |
5719 | * @brief Get a substring. | |
e12e4f3b | 5720 | * @param __pos Index of first character (default 0). |
5721 | * @param __n Number of characters in substring (default remainder). | |
3d30b815 | 5722 | * @return The new string. |
e12e4f3b | 5723 | * @throw std::out_of_range If __pos > size(). |
3d30b815 | 5724 | * |
e12e4f3b | 5725 | * Construct and return a new string using the @a __n |
5726 | * characters starting at @a __pos. If the string is too | |
5727 | * short, use the remainder of the characters. If @a __pos is | |
5728 | * beyond the end of the string, out_of_range is thrown. | |
3d30b815 | 5729 | */ |
8f0dfb87 | 5730 | basic_string |
1d487aca | 5731 | substr(size_type __pos = 0, size_type __n = npos) const |
a1ea262e | 5732 | { return basic_string(*this, |
5733 | _M_check(__pos, "basic_string::substr"), __n); } | |
1d487aca | 5734 | |
3d30b815 | 5735 | /** |
5736 | * @brief Compare to a string. | |
e12e4f3b | 5737 | * @param __str String to compare against. |
3d30b815 | 5738 | * @return Integer < 0, 0, or > 0. |
5739 | * | |
e12e4f3b | 5740 | * Returns an integer < 0 if this string is ordered before @a |
5741 | * __str, 0 if their values are equivalent, or > 0 if this | |
5742 | * string is ordered after @a __str. Determines the effective | |
5743 | * length rlen of the strings to compare as the smallest of | |
5744 | * size() and str.size(). The function then compares the two | |
5745 | * strings by calling traits::compare(data(), str.data(),rlen). | |
5746 | * If the result of the comparison is nonzero returns it, | |
5747 | * otherwise the shorter one is ordered first. | |
3d30b815 | 5748 | */ |
8f0dfb87 | 5749 | int |
1d487aca | 5750 | compare(const basic_string& __str) const |
5751 | { | |
5b35e31c | 5752 | const size_type __size = this->size(); |
5753 | const size_type __osize = __str.size(); | |
5754 | const size_type __len = std::min(__size, __osize); | |
8f0dfb87 | 5755 | |
1d487aca | 5756 | int __r = traits_type::compare(_M_data(), __str.data(), __len); |
5757 | if (!__r) | |
9acadc12 | 5758 | __r = _S_compare(__size, __osize); |
1d487aca | 5759 | return __r; |
5760 | } | |
5761 | ||
98185b9f | 5762 | #if __cplusplus >= 201703L |
805aeef7 | 5763 | /** |
5764 | * @brief Compare to a string_view. | |
7c78f2e6 | 5765 | * @param __svt An object convertible to string_view to compare against. |
805aeef7 | 5766 | * @return Integer < 0, 0, or > 0. |
5767 | */ | |
7c78f2e6 | 5768 | template<typename _Tp> |
5769 | _If_sv<_Tp, int> | |
5770 | compare(const _Tp& __svt) const | |
5771 | noexcept(is_same<_Tp, __sv_type>::value) | |
5772 | { | |
5773 | __sv_type __sv = __svt; | |
5774 | const size_type __size = this->size(); | |
5775 | const size_type __osize = __sv.size(); | |
5776 | const size_type __len = std::min(__size, __osize); | |
5777 | ||
5778 | int __r = traits_type::compare(_M_data(), __sv.data(), __len); | |
5779 | if (!__r) | |
5780 | __r = _S_compare(__size, __osize); | |
5781 | return __r; | |
5782 | } | |
805aeef7 | 5783 | |
5784 | /** | |
5785 | * @brief Compare to a string_view. | |
5786 | * @param __pos A position in the string to start comparing from. | |
5787 | * @param __n The number of characters to compare. | |
7c78f2e6 | 5788 | * @param __svt An object convertible to string_view to compare |
5789 | * against. | |
805aeef7 | 5790 | * @return Integer < 0, 0, or > 0. |
5791 | */ | |
7c78f2e6 | 5792 | template<typename _Tp> |
5793 | _If_sv<_Tp, int> | |
5794 | compare(size_type __pos, size_type __n, const _Tp& __svt) const | |
5795 | noexcept(is_same<_Tp, __sv_type>::value) | |
5796 | { | |
5797 | __sv_type __sv = __svt; | |
5798 | return __sv_type(*this).substr(__pos, __n).compare(__sv); | |
5799 | } | |
805aeef7 | 5800 | |
5801 | /** | |
5802 | * @brief Compare to a string_view. | |
5803 | * @param __pos1 A position in the string to start comparing from. | |
5804 | * @param __n1 The number of characters to compare. | |
7c78f2e6 | 5805 | * @param __svt An object convertible to string_view to compare |
5806 | * against. | |
805aeef7 | 5807 | * @param __pos2 A position in the string_view to start comparing from. |
5808 | * @param __n2 The number of characters to compare. | |
5809 | * @return Integer < 0, 0, or > 0. | |
5810 | */ | |
7c78f2e6 | 5811 | template<typename _Tp> |
805aeef7 | 5812 | _If_sv<_Tp, int> |
5813 | compare(size_type __pos1, size_type __n1, const _Tp& __svt, | |
5814 | size_type __pos2, size_type __n2 = npos) const | |
7c78f2e6 | 5815 | noexcept(is_same<_Tp, __sv_type>::value) |
805aeef7 | 5816 | { |
5817 | __sv_type __sv = __svt; | |
5818 | return __sv_type(*this) | |
5819 | .substr(__pos1, __n1).compare(__sv.substr(__pos2, __n2)); | |
5820 | } | |
5821 | #endif // C++17 | |
5822 | ||
3d30b815 | 5823 | /** |
5824 | * @brief Compare substring to a string. | |
e12e4f3b | 5825 | * @param __pos Index of first character of substring. |
5826 | * @param __n Number of characters in substring. | |
5827 | * @param __str String to compare against. | |
3d30b815 | 5828 | * @return Integer < 0, 0, or > 0. |
5829 | * | |
e12e4f3b | 5830 | * Form the substring of this string from the @a __n characters |
5831 | * starting at @a __pos. Returns an integer < 0 if the | |
5832 | * substring is ordered before @a __str, 0 if their values are | |
5833 | * equivalent, or > 0 if the substring is ordered after @a | |
5834 | * __str. Determines the effective length rlen of the strings | |
5835 | * to compare as the smallest of the length of the substring | |
5836 | * and @a __str.size(). The function then compares the two | |
5837 | * strings by calling | |
5838 | * traits::compare(substring.data(),str.data(),rlen). If the | |
5839 | * result of the comparison is nonzero returns it, otherwise | |
5840 | * the shorter one is ordered first. | |
3d30b815 | 5841 | */ |
8f0dfb87 | 5842 | int |
1d487aca | 5843 | compare(size_type __pos, size_type __n, const basic_string& __str) const; |
5844 | ||
3d30b815 | 5845 | /** |
5846 | * @brief Compare substring to a substring. | |
e12e4f3b | 5847 | * @param __pos1 Index of first character of substring. |
5848 | * @param __n1 Number of characters in substring. | |
5849 | * @param __str String to compare against. | |
5850 | * @param __pos2 Index of first character of substring of str. | |
5851 | * @param __n2 Number of characters in substring of str. | |
3d30b815 | 5852 | * @return Integer < 0, 0, or > 0. |
5853 | * | |
e12e4f3b | 5854 | * Form the substring of this string from the @a __n1 |
5855 | * characters starting at @a __pos1. Form the substring of @a | |
5856 | * __str from the @a __n2 characters starting at @a __pos2. | |
5857 | * Returns an integer < 0 if this substring is ordered before | |
5858 | * the substring of @a __str, 0 if their values are equivalent, | |
5859 | * or > 0 if this substring is ordered after the substring of | |
5860 | * @a __str. Determines the effective length rlen of the | |
5861 | * strings to compare as the smallest of the lengths of the | |
5862 | * substrings. The function then compares the two strings by | |
5863 | * calling | |
ca9e8f8a | 5864 | * traits::compare(substring.data(),str.substr(pos2,n2).data(),rlen). |
e12e4f3b | 5865 | * If the result of the comparison is nonzero returns it, |
5866 | * otherwise the shorter one is ordered first. | |
3d30b815 | 5867 | */ |
8f0dfb87 | 5868 | int |
1d487aca | 5869 | compare(size_type __pos1, size_type __n1, const basic_string& __str, |
cf3c455b | 5870 | size_type __pos2, size_type __n2 = npos) const; |
1d487aca | 5871 | |
3d30b815 | 5872 | /** |
5873 | * @brief Compare to a C string. | |
e12e4f3b | 5874 | * @param __s C string to compare against. |
3d30b815 | 5875 | * @return Integer < 0, 0, or > 0. |
5876 | * | |
e12e4f3b | 5877 | * Returns an integer < 0 if this string is ordered before @a __s, 0 if |
3d30b815 | 5878 | * their values are equivalent, or > 0 if this string is ordered after |
e12e4f3b | 5879 | * @a __s. Determines the effective length rlen of the strings to |
ca9e8f8a | 5880 | * compare as the smallest of size() and the length of a string |
e12e4f3b | 5881 | * constructed from @a __s. The function then compares the two strings |
ca9e8f8a | 5882 | * by calling traits::compare(data(),s,rlen). If the result of the |
5883 | * comparison is nonzero returns it, otherwise the shorter one is | |
5884 | * ordered first. | |
3d30b815 | 5885 | */ |
8f0dfb87 | 5886 | int |
5b479470 | 5887 | compare(const _CharT* __s) const _GLIBCXX_NOEXCEPT; |
1d487aca | 5888 | |
5a64d8cf | 5889 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
0c656944 | 5890 | // 5 String::compare specification questionable |
3d30b815 | 5891 | /** |
5892 | * @brief Compare substring to a C string. | |
e12e4f3b | 5893 | * @param __pos Index of first character of substring. |
5894 | * @param __n1 Number of characters in substring. | |
5895 | * @param __s C string to compare against. | |
3d30b815 | 5896 | * @return Integer < 0, 0, or > 0. |
5897 | * | |
e12e4f3b | 5898 | * Form the substring of this string from the @a __n1 |
5899 | * characters starting at @a pos. Returns an integer < 0 if | |
5900 | * the substring is ordered before @a __s, 0 if their values | |
5901 | * are equivalent, or > 0 if the substring is ordered after @a | |
5902 | * __s. Determines the effective length rlen of the strings to | |
5903 | * compare as the smallest of the length of the substring and | |
5904 | * the length of a string constructed from @a __s. The | |
ca9e8f8a | 5905 | * function then compares the two string by calling |
e12e4f3b | 5906 | * traits::compare(substring.data(),__s,rlen). If the result of |
5907 | * the comparison is nonzero returns it, otherwise the shorter | |
5908 | * one is ordered first. | |
3d30b815 | 5909 | */ |
8f0dfb87 | 5910 | int |
3482ff44 | 5911 | compare(size_type __pos, size_type __n1, const _CharT* __s) const; |
5912 | ||
3d30b815 | 5913 | /** |
4681b76f | 5914 | * @brief Compare substring against a character %array. |
e12e4f3b | 5915 | * @param __pos Index of first character of substring. |
5916 | * @param __n1 Number of characters in substring. | |
5917 | * @param __s character %array to compare against. | |
5918 | * @param __n2 Number of characters of s. | |
3d30b815 | 5919 | * @return Integer < 0, 0, or > 0. |
5920 | * | |
e12e4f3b | 5921 | * Form the substring of this string from the @a __n1 |
5922 | * characters starting at @a __pos. Form a string from the | |
5923 | * first @a __n2 characters of @a __s. Returns an integer < 0 | |
5924 | * if this substring is ordered before the string from @a __s, | |
5925 | * 0 if their values are equivalent, or > 0 if this substring | |
5926 | * is ordered after the string from @a __s. Determines the | |
5927 | * effective length rlen of the strings to compare as the | |
5928 | * smallest of the length of the substring and @a __n2. The | |
5929 | * function then compares the two strings by calling | |
5930 | * traits::compare(substring.data(),s,rlen). If the result of | |
5931 | * the comparison is nonzero returns it, otherwise the shorter | |
ca9e8f8a | 5932 | * one is ordered first. |
2c9a3a3d | 5933 | * |
72117d76 | 5934 | * NB: s must have at least n2 characters, '\\0' has |
5935 | * no special meaning. | |
3d30b815 | 5936 | */ |
8f0dfb87 | 5937 | int |
5938 | compare(size_type __pos, size_type __n1, const _CharT* __s, | |
3482ff44 | 5939 | size_type __n2) const; |
13143e13 | 5940 | |
e131c631 | 5941 | #if __cplusplus > 201703L |
5942 | bool | |
5943 | starts_with(basic_string_view<_CharT, _Traits> __x) const noexcept | |
5944 | { return __sv_type(this->data(), this->size()).starts_with(__x); } | |
5945 | ||
5946 | bool | |
5947 | starts_with(_CharT __x) const noexcept | |
5948 | { return __sv_type(this->data(), this->size()).starts_with(__x); } | |
5949 | ||
5950 | bool | |
5951 | starts_with(const _CharT* __x) const noexcept | |
5952 | { return __sv_type(this->data(), this->size()).starts_with(__x); } | |
5953 | ||
5954 | bool | |
5955 | ends_with(basic_string_view<_CharT, _Traits> __x) const noexcept | |
5956 | { return __sv_type(this->data(), this->size()).ends_with(__x); } | |
5957 | ||
5958 | bool | |
5959 | ends_with(_CharT __x) const noexcept | |
5960 | { return __sv_type(this->data(), this->size()).ends_with(__x); } | |
5961 | ||
5962 | bool | |
5963 | ends_with(const _CharT* __x) const noexcept | |
5964 | { return __sv_type(this->data(), this->size()).ends_with(__x); } | |
5965 | #endif // C++20 | |
5966 | ||
13143e13 | 5967 | # ifdef _GLIBCXX_TM_TS_INTERNAL |
5968 | friend void | |
5969 | ::_txnal_cow_string_C1_for_exceptions(void* that, const char* s, | |
5970 | void* exc); | |
5971 | friend const char* | |
5972 | ::_txnal_cow_string_c_str(const void *that); | |
5973 | friend void | |
5974 | ::_txnal_cow_string_D1(void *that); | |
5975 | friend void | |
5976 | ::_txnal_cow_string_D1_commit(void *that); | |
5977 | # endif | |
1d487aca | 5978 | }; |
63f54259 | 5979 | #endif // !_GLIBCXX_USE_CXX11_ABI |
1d487aca | 5980 | |
c2b91adc | 5981 | #if __cpp_deduction_guides >= 201606 |
5982 | _GLIBCXX_BEGIN_NAMESPACE_CXX11 | |
5983 | template<typename _InputIterator, typename _CharT | |
5984 | = typename iterator_traits<_InputIterator>::value_type, | |
5985 | typename _Allocator = allocator<_CharT>, | |
5986 | typename = _RequireInputIter<_InputIterator>, | |
5987 | typename = _RequireAllocator<_Allocator>> | |
5988 | basic_string(_InputIterator, _InputIterator, _Allocator = _Allocator()) | |
5989 | -> basic_string<_CharT, char_traits<_CharT>, _Allocator>; | |
96a68164 | 5990 | |
5991 | // _GLIBCXX_RESOLVE_LIB_DEFECTS | |
5992 | // 3075. basic_string needs deduction guides from basic_string_view | |
5993 | template<typename _CharT, typename _Traits, | |
5994 | typename _Allocator = allocator<_CharT>, | |
5995 | typename = _RequireAllocator<_Allocator>> | |
5996 | basic_string(basic_string_view<_CharT, _Traits>, const _Allocator& = _Allocator()) | |
5997 | -> basic_string<_CharT, _Traits, _Allocator>; | |
5998 | ||
5999 | template<typename _CharT, typename _Traits, | |
6000 | typename _Allocator = allocator<_CharT>, | |
6001 | typename = _RequireAllocator<_Allocator>> | |
6002 | basic_string(basic_string_view<_CharT, _Traits>, | |
6003 | typename basic_string<_CharT, _Traits, _Allocator>::size_type, | |
6004 | typename basic_string<_CharT, _Traits, _Allocator>::size_type, | |
6005 | const _Allocator& = _Allocator()) | |
6006 | -> basic_string<_CharT, _Traits, _Allocator>; | |
c2b91adc | 6007 | _GLIBCXX_END_NAMESPACE_CXX11 |
6008 | #endif | |
6009 | ||
1d487aca | 6010 | // operator+ |
3d30b815 | 6011 | /** |
6012 | * @brief Concatenate two strings. | |
e12e4f3b | 6013 | * @param __lhs First string. |
6014 | * @param __rhs Last string. | |
6015 | * @return New string with value of @a __lhs followed by @a __rhs. | |
bae9b8af | 6016 | */ |
4e978796 | 6017 | template<typename _CharT, typename _Traits, typename _Alloc> |
1d487aca | 6018 | basic_string<_CharT, _Traits, _Alloc> |
6019 | operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs, | |
6020 | const basic_string<_CharT, _Traits, _Alloc>& __rhs) | |
6021 | { | |
6022 | basic_string<_CharT, _Traits, _Alloc> __str(__lhs); | |
6023 | __str.append(__rhs); | |
6024 | return __str; | |
6025 | } | |
6026 | ||
3d30b815 | 6027 | /** |
6028 | * @brief Concatenate C string and string. | |
e12e4f3b | 6029 | * @param __lhs First string. |
6030 | * @param __rhs Last string. | |
6031 | * @return New string with value of @a __lhs followed by @a __rhs. | |
bae9b8af | 6032 | */ |
1d487aca | 6033 | template<typename _CharT, typename _Traits, typename _Alloc> |
6034 | basic_string<_CharT,_Traits,_Alloc> | |
6035 | operator+(const _CharT* __lhs, | |
6036 | const basic_string<_CharT,_Traits,_Alloc>& __rhs); | |
6037 | ||
3d30b815 | 6038 | /** |
6039 | * @brief Concatenate character and string. | |
e12e4f3b | 6040 | * @param __lhs First string. |
6041 | * @param __rhs Last string. | |
6042 | * @return New string with @a __lhs followed by @a __rhs. | |
bae9b8af | 6043 | */ |
1d487aca | 6044 | template<typename _CharT, typename _Traits, typename _Alloc> |
6045 | basic_string<_CharT,_Traits,_Alloc> | |
6046 | operator+(_CharT __lhs, const basic_string<_CharT,_Traits,_Alloc>& __rhs); | |
6047 | ||
3d30b815 | 6048 | /** |
6049 | * @brief Concatenate string and C string. | |
e12e4f3b | 6050 | * @param __lhs First string. |
6051 | * @param __rhs Last string. | |
6052 | * @return New string with @a __lhs followed by @a __rhs. | |
bae9b8af | 6053 | */ |
1d487aca | 6054 | template<typename _CharT, typename _Traits, typename _Alloc> |
6055 | inline basic_string<_CharT, _Traits, _Alloc> | |
6056 | operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs, | |
63f54259 | 6057 | const _CharT* __rhs) |
1d487aca | 6058 | { |
6059 | basic_string<_CharT, _Traits, _Alloc> __str(__lhs); | |
6060 | __str.append(__rhs); | |
6061 | return __str; | |
6062 | } | |
6063 | ||
3d30b815 | 6064 | /** |
6065 | * @brief Concatenate string and character. | |
e12e4f3b | 6066 | * @param __lhs First string. |
6067 | * @param __rhs Last string. | |
6068 | * @return New string with @a __lhs followed by @a __rhs. | |
bae9b8af | 6069 | */ |
1d487aca | 6070 | template<typename _CharT, typename _Traits, typename _Alloc> |
6071 | inline basic_string<_CharT, _Traits, _Alloc> | |
6072 | operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs, _CharT __rhs) | |
6073 | { | |
bae9b8af | 6074 | typedef basic_string<_CharT, _Traits, _Alloc> __string_type; |
1d487aca | 6075 | typedef typename __string_type::size_type __size_type; |
6076 | __string_type __str(__lhs); | |
6077 | __str.append(__size_type(1), __rhs); | |
6078 | return __str; | |
6079 | } | |
6080 | ||
0c8766b1 | 6081 | #if __cplusplus >= 201103L |
5596bcf9 | 6082 | template<typename _CharT, typename _Traits, typename _Alloc> |
6083 | inline basic_string<_CharT, _Traits, _Alloc> | |
6084 | operator+(basic_string<_CharT, _Traits, _Alloc>&& __lhs, | |
6085 | const basic_string<_CharT, _Traits, _Alloc>& __rhs) | |
6086 | { return std::move(__lhs.append(__rhs)); } | |
6087 | ||
6088 | template<typename _CharT, typename _Traits, typename _Alloc> | |
6089 | inline basic_string<_CharT, _Traits, _Alloc> | |
6090 | operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs, | |
6091 | basic_string<_CharT, _Traits, _Alloc>&& __rhs) | |
6092 | { return std::move(__rhs.insert(0, __lhs)); } | |
6093 | ||
6094 | template<typename _CharT, typename _Traits, typename _Alloc> | |
6095 | inline basic_string<_CharT, _Traits, _Alloc> | |
6096 | operator+(basic_string<_CharT, _Traits, _Alloc>&& __lhs, | |
6097 | basic_string<_CharT, _Traits, _Alloc>&& __rhs) | |
1e1a3ece | 6098 | { |
6099 | const auto __size = __lhs.size() + __rhs.size(); | |
6100 | const bool __cond = (__size > __lhs.capacity() | |
6101 | && __size <= __rhs.capacity()); | |
6102 | return __cond ? std::move(__rhs.insert(0, __lhs)) | |
6103 | : std::move(__lhs.append(__rhs)); | |
6104 | } | |
5596bcf9 | 6105 | |
6106 | template<typename _CharT, typename _Traits, typename _Alloc> | |
6107 | inline basic_string<_CharT, _Traits, _Alloc> | |
6108 | operator+(const _CharT* __lhs, | |
6109 | basic_string<_CharT, _Traits, _Alloc>&& __rhs) | |
6110 | { return std::move(__rhs.insert(0, __lhs)); } | |
6111 | ||
6112 | template<typename _CharT, typename _Traits, typename _Alloc> | |
6113 | inline basic_string<_CharT, _Traits, _Alloc> | |
1e1a3ece | 6114 | operator+(_CharT __lhs, |
6115 | basic_string<_CharT, _Traits, _Alloc>&& __rhs) | |
5596bcf9 | 6116 | { return std::move(__rhs.insert(0, 1, __lhs)); } |
6117 | ||
6118 | template<typename _CharT, typename _Traits, typename _Alloc> | |
6119 | inline basic_string<_CharT, _Traits, _Alloc> | |
6120 | operator+(basic_string<_CharT, _Traits, _Alloc>&& __lhs, | |
6121 | const _CharT* __rhs) | |
6122 | { return std::move(__lhs.append(__rhs)); } | |
6123 | ||
6124 | template<typename _CharT, typename _Traits, typename _Alloc> | |
6125 | inline basic_string<_CharT, _Traits, _Alloc> | |
6126 | operator+(basic_string<_CharT, _Traits, _Alloc>&& __lhs, | |
6127 | _CharT __rhs) | |
6128 | { return std::move(__lhs.append(1, __rhs)); } | |
6129 | #endif | |
6130 | ||
1d487aca | 6131 | // operator == |
3d30b815 | 6132 | /** |
6133 | * @brief Test equivalence of two strings. | |
e12e4f3b | 6134 | * @param __lhs First string. |
6135 | * @param __rhs Second string. | |
6136 | * @return True if @a __lhs.compare(@a __rhs) == 0. False otherwise. | |
bae9b8af | 6137 | */ |
1d487aca | 6138 | template<typename _CharT, typename _Traits, typename _Alloc> |
6139 | inline bool | |
6140 | operator==(const basic_string<_CharT, _Traits, _Alloc>& __lhs, | |
6141 | const basic_string<_CharT, _Traits, _Alloc>& __rhs) | |
b7aaabf0 | 6142 | _GLIBCXX_NOEXCEPT |
1d487aca | 6143 | { return __lhs.compare(__rhs) == 0; } |
6144 | ||
08264865 | 6145 | template<typename _CharT> |
6146 | inline | |
6147 | typename __gnu_cxx::__enable_if<__is_char<_CharT>::__value, bool>::__type | |
6148 | operator==(const basic_string<_CharT>& __lhs, | |
b7aaabf0 | 6149 | const basic_string<_CharT>& __rhs) _GLIBCXX_NOEXCEPT |
08264865 | 6150 | { return (__lhs.size() == __rhs.size() |
6151 | && !std::char_traits<_CharT>::compare(__lhs.data(), __rhs.data(), | |
6152 | __lhs.size())); } | |
6153 | ||
3d30b815 | 6154 | /** |
6155 | * @brief Test equivalence of C string and string. | |
e12e4f3b | 6156 | * @param __lhs C string. |
6157 | * @param __rhs String. | |
6158 | * @return True if @a __rhs.compare(@a __lhs) == 0. False otherwise. | |
bae9b8af | 6159 | */ |
1d487aca | 6160 | template<typename _CharT, typename _Traits, typename _Alloc> |
6161 | inline bool | |
6162 | operator==(const _CharT* __lhs, | |
6163 | const basic_string<_CharT, _Traits, _Alloc>& __rhs) | |
6164 | { return __rhs.compare(__lhs) == 0; } | |
6165 | ||
3d30b815 | 6166 | /** |
6167 | * @brief Test equivalence of string and C string. | |
e12e4f3b | 6168 | * @param __lhs String. |
6169 | * @param __rhs C string. | |
6170 | * @return True if @a __lhs.compare(@a __rhs) == 0. False otherwise. | |
bae9b8af | 6171 | */ |
1d487aca | 6172 | template<typename _CharT, typename _Traits, typename _Alloc> |
6173 | inline bool | |
6174 | operator==(const basic_string<_CharT, _Traits, _Alloc>& __lhs, | |
6175 | const _CharT* __rhs) | |
6176 | { return __lhs.compare(__rhs) == 0; } | |
6177 | ||
6178 | // operator != | |
3d30b815 | 6179 | /** |
6180 | * @brief Test difference of two strings. | |
e12e4f3b | 6181 | * @param __lhs First string. |
6182 | * @param __rhs Second string. | |
6183 | * @return True if @a __lhs.compare(@a __rhs) != 0. False otherwise. | |
bae9b8af | 6184 | */ |
1d487aca | 6185 | template<typename _CharT, typename _Traits, typename _Alloc> |
6186 | inline bool | |
6187 | operator!=(const basic_string<_CharT, _Traits, _Alloc>& __lhs, | |
6188 | const basic_string<_CharT, _Traits, _Alloc>& __rhs) | |
b7aaabf0 | 6189 | _GLIBCXX_NOEXCEPT |
08264865 | 6190 | { return !(__lhs == __rhs); } |
1d487aca | 6191 | |
3d30b815 | 6192 | /** |
6193 | * @brief Test difference of C string and string. | |
e12e4f3b | 6194 | * @param __lhs C string. |
6195 | * @param __rhs String. | |
6196 | * @return True if @a __rhs.compare(@a __lhs) != 0. False otherwise. | |
bae9b8af | 6197 | */ |
1d487aca | 6198 | template<typename _CharT, typename _Traits, typename _Alloc> |
6199 | inline bool | |
6200 | operator!=(const _CharT* __lhs, | |
6201 | const basic_string<_CharT, _Traits, _Alloc>& __rhs) | |
08264865 | 6202 | { return !(__lhs == __rhs); } |
1d487aca | 6203 | |
3d30b815 | 6204 | /** |
6205 | * @brief Test difference of string and C string. | |
e12e4f3b | 6206 | * @param __lhs String. |
6207 | * @param __rhs C string. | |
6208 | * @return True if @a __lhs.compare(@a __rhs) != 0. False otherwise. | |
bae9b8af | 6209 | */ |
1d487aca | 6210 | template<typename _CharT, typename _Traits, typename _Alloc> |
6211 | inline bool | |
6212 | operator!=(const basic_string<_CharT, _Traits, _Alloc>& __lhs, | |
6213 | const _CharT* __rhs) | |
08264865 | 6214 | { return !(__lhs == __rhs); } |
1d487aca | 6215 | |
6216 | // operator < | |
3d30b815 | 6217 | /** |
6218 | * @brief Test if string precedes string. | |
e12e4f3b | 6219 | * @param __lhs First string. |
6220 | * @param __rhs Second string. | |
6221 | * @return True if @a __lhs precedes @a __rhs. False otherwise. | |
bae9b8af | 6222 | */ |
1d487aca | 6223 | template<typename _CharT, typename _Traits, typename _Alloc> |
6224 | inline bool | |
6225 | operator<(const basic_string<_CharT, _Traits, _Alloc>& __lhs, | |
6226 | const basic_string<_CharT, _Traits, _Alloc>& __rhs) | |
b7aaabf0 | 6227 | _GLIBCXX_NOEXCEPT |
1d487aca | 6228 | { return __lhs.compare(__rhs) < 0; } |
6229 | ||
3d30b815 | 6230 | /** |
6231 | * @brief Test if string precedes C string. | |
e12e4f3b | 6232 | * @param __lhs String. |
6233 | * @param __rhs C string. | |
6234 | * @return True if @a __lhs precedes @a __rhs. False otherwise. | |
bae9b8af | 6235 | */ |
1d487aca | 6236 | template<typename _CharT, typename _Traits, typename _Alloc> |
6237 | inline bool | |
6238 | operator<(const basic_string<_CharT, _Traits, _Alloc>& __lhs, | |
6239 | const _CharT* __rhs) | |
6240 | { return __lhs.compare(__rhs) < 0; } | |
6241 | ||
3d30b815 | 6242 | /** |
6243 | * @brief Test if C string precedes string. | |
e12e4f3b | 6244 | * @param __lhs C string. |
6245 | * @param __rhs String. | |
6246 | * @return True if @a __lhs precedes @a __rhs. False otherwise. | |
bae9b8af | 6247 | */ |
1d487aca | 6248 | template<typename _CharT, typename _Traits, typename _Alloc> |
6249 | inline bool | |
6250 | operator<(const _CharT* __lhs, | |
6251 | const basic_string<_CharT, _Traits, _Alloc>& __rhs) | |
6252 | { return __rhs.compare(__lhs) > 0; } | |
6253 | ||
6254 | // operator > | |
3d30b815 | 6255 | /** |
6256 | * @brief Test if string follows string. | |
e12e4f3b | 6257 | * @param __lhs First string. |
6258 | * @param __rhs Second string. | |
6259 | * @return True if @a __lhs follows @a __rhs. False otherwise. | |
bae9b8af | 6260 | */ |
1d487aca | 6261 | template<typename _CharT, typename _Traits, typename _Alloc> |
6262 | inline bool | |
6263 | operator>(const basic_string<_CharT, _Traits, _Alloc>& __lhs, | |
6264 | const basic_string<_CharT, _Traits, _Alloc>& __rhs) | |
b7aaabf0 | 6265 | _GLIBCXX_NOEXCEPT |
1d487aca | 6266 | { return __lhs.compare(__rhs) > 0; } |
6267 | ||
3d30b815 | 6268 | /** |
6269 | * @brief Test if string follows C string. | |
e12e4f3b | 6270 | * @param __lhs String. |
6271 | * @param __rhs C string. | |
6272 | * @return True if @a __lhs follows @a __rhs. False otherwise. | |
bae9b8af | 6273 | */ |
1d487aca | 6274 | template<typename _CharT, typename _Traits, typename _Alloc> |
6275 | inline bool | |
6276 | operator>(const basic_string<_CharT, _Traits, _Alloc>& __lhs, | |
6277 | const _CharT* __rhs) | |
6278 | { return __lhs.compare(__rhs) > 0; } | |
6279 | ||
3d30b815 | 6280 | /** |
6281 | * @brief Test if C string follows string. | |
e12e4f3b | 6282 | * @param __lhs C string. |
6283 | * @param __rhs String. | |
6284 | * @return True if @a __lhs follows @a __rhs. False otherwise. | |
bae9b8af | 6285 | */ |
1d487aca | 6286 | template<typename _CharT, typename _Traits, typename _Alloc> |
6287 | inline bool | |
6288 | operator>(const _CharT* __lhs, | |
6289 | const basic_string<_CharT, _Traits, _Alloc>& __rhs) | |
6290 | { return __rhs.compare(__lhs) < 0; } | |
6291 | ||
6292 | // operator <= | |
3d30b815 | 6293 | /** |
6294 | * @brief Test if string doesn't follow string. | |
e12e4f3b | 6295 | * @param __lhs First string. |
6296 | * @param __rhs Second string. | |
6297 | * @return True if @a __lhs doesn't follow @a __rhs. False otherwise. | |
bae9b8af | 6298 | */ |
1d487aca | 6299 | template<typename _CharT, typename _Traits, typename _Alloc> |
6300 | inline bool | |
6301 | operator<=(const basic_string<_CharT, _Traits, _Alloc>& __lhs, | |
6302 | const basic_string<_CharT, _Traits, _Alloc>& __rhs) | |
b7aaabf0 | 6303 | _GLIBCXX_NOEXCEPT |
1d487aca | 6304 | { return __lhs.compare(__rhs) <= 0; } |
6305 | ||
3d30b815 | 6306 | /** |
6307 | * @brief Test if string doesn't follow C string. | |
e12e4f3b | 6308 | * @param __lhs String. |
6309 | * @param __rhs C string. | |
6310 | * @return True if @a __lhs doesn't follow @a __rhs. False otherwise. | |
bae9b8af | 6311 | */ |
1d487aca | 6312 | template<typename _CharT, typename _Traits, typename _Alloc> |
6313 | inline bool | |
6314 | operator<=(const basic_string<_CharT, _Traits, _Alloc>& __lhs, | |
6315 | const _CharT* __rhs) | |
6316 | { return __lhs.compare(__rhs) <= 0; } | |
6317 | ||
3d30b815 | 6318 | /** |
6319 | * @brief Test if C string doesn't follow string. | |
e12e4f3b | 6320 | * @param __lhs C string. |
6321 | * @param __rhs String. | |
6322 | * @return True if @a __lhs doesn't follow @a __rhs. False otherwise. | |
bae9b8af | 6323 | */ |
1d487aca | 6324 | template<typename _CharT, typename _Traits, typename _Alloc> |
6325 | inline bool | |
6326 | operator<=(const _CharT* __lhs, | |
6327 | const basic_string<_CharT, _Traits, _Alloc>& __rhs) | |
5712dd7d | 6328 | { return __rhs.compare(__lhs) >= 0; } |
1d487aca | 6329 | |
6330 | // operator >= | |
3d30b815 | 6331 | /** |
6332 | * @brief Test if string doesn't precede string. | |
e12e4f3b | 6333 | * @param __lhs First string. |
6334 | * @param __rhs Second string. | |
6335 | * @return True if @a __lhs doesn't precede @a __rhs. False otherwise. | |
bae9b8af | 6336 | */ |
1d487aca | 6337 | template<typename _CharT, typename _Traits, typename _Alloc> |
6338 | inline bool | |
6339 | operator>=(const basic_string<_CharT, _Traits, _Alloc>& __lhs, | |
6340 | const basic_string<_CharT, _Traits, _Alloc>& __rhs) | |
b7aaabf0 | 6341 | _GLIBCXX_NOEXCEPT |
1d487aca | 6342 | { return __lhs.compare(__rhs) >= 0; } |
6343 | ||
3d30b815 | 6344 | /** |
6345 | * @brief Test if string doesn't precede C string. | |
e12e4f3b | 6346 | * @param __lhs String. |
6347 | * @param __rhs C string. | |
6348 | * @return True if @a __lhs doesn't precede @a __rhs. False otherwise. | |
bae9b8af | 6349 | */ |
1d487aca | 6350 | template<typename _CharT, typename _Traits, typename _Alloc> |
6351 | inline bool | |
6352 | operator>=(const basic_string<_CharT, _Traits, _Alloc>& __lhs, | |
6353 | const _CharT* __rhs) | |
6354 | { return __lhs.compare(__rhs) >= 0; } | |
6355 | ||
3d30b815 | 6356 | /** |
6357 | * @brief Test if C string doesn't precede string. | |
e12e4f3b | 6358 | * @param __lhs C string. |
6359 | * @param __rhs String. | |
6360 | * @return True if @a __lhs doesn't precede @a __rhs. False otherwise. | |
bae9b8af | 6361 | */ |
1d487aca | 6362 | template<typename _CharT, typename _Traits, typename _Alloc> |
6363 | inline bool | |
6364 | operator>=(const _CharT* __lhs, | |
6365 | const basic_string<_CharT, _Traits, _Alloc>& __rhs) | |
6366 | { return __rhs.compare(__lhs) <= 0; } | |
6367 | ||
3d30b815 | 6368 | /** |
6369 | * @brief Swap contents of two strings. | |
e12e4f3b | 6370 | * @param __lhs First string. |
6371 | * @param __rhs Second string. | |
3d30b815 | 6372 | * |
e12e4f3b | 6373 | * Exchanges the contents of @a __lhs and @a __rhs in constant time. |
3d30b815 | 6374 | */ |
1d487aca | 6375 | template<typename _CharT, typename _Traits, typename _Alloc> |
6376 | inline void | |
6377 | swap(basic_string<_CharT, _Traits, _Alloc>& __lhs, | |
6378 | basic_string<_CharT, _Traits, _Alloc>& __rhs) | |
b7aaabf0 | 6379 | _GLIBCXX_NOEXCEPT_IF(noexcept(__lhs.swap(__rhs))) |
1d487aca | 6380 | { __lhs.swap(__rhs); } |
6381 | ||
63f54259 | 6382 | |
3d30b815 | 6383 | /** |
6384 | * @brief Read stream into a string. | |
e12e4f3b | 6385 | * @param __is Input stream. |
6386 | * @param __str Buffer to store into. | |
3d30b815 | 6387 | * @return Reference to the input stream. |
6388 | * | |
e12e4f3b | 6389 | * Stores characters from @a __is into @a __str until whitespace is |
6390 | * found, the end of the stream is encountered, or str.max_size() | |
6391 | * is reached. If is.width() is non-zero, that is the limit on the | |
6392 | * number of characters stored into @a __str. Any previous | |
6393 | * contents of @a __str are erased. | |
3d30b815 | 6394 | */ |
1d487aca | 6395 | template<typename _CharT, typename _Traits, typename _Alloc> |
6396 | basic_istream<_CharT, _Traits>& | |
6397 | operator>>(basic_istream<_CharT, _Traits>& __is, | |
6398 | basic_string<_CharT, _Traits, _Alloc>& __str); | |
6399 | ||
bc1c8aef | 6400 | template<> |
6401 | basic_istream<char>& | |
6402 | operator>>(basic_istream<char>& __is, basic_string<char>& __str); | |
6403 | ||
3d30b815 | 6404 | /** |
6405 | * @brief Write string to a stream. | |
e12e4f3b | 6406 | * @param __os Output stream. |
6407 | * @param __str String to write out. | |
3d30b815 | 6408 | * @return Reference to the output stream. |
6409 | * | |
e12e4f3b | 6410 | * Output characters of @a __str into os following the same rules as for |
3d30b815 | 6411 | * writing a C string. |
6412 | */ | |
1d487aca | 6413 | template<typename _CharT, typename _Traits, typename _Alloc> |
7e9db36e | 6414 | inline basic_ostream<_CharT, _Traits>& |
1d487aca | 6415 | operator<<(basic_ostream<_CharT, _Traits>& __os, |
d978d656 | 6416 | const basic_string<_CharT, _Traits, _Alloc>& __str) |
6417 | { | |
6418 | // _GLIBCXX_RESOLVE_LIB_DEFECTS | |
6419 | // 586. string inserter not a formatted function | |
df18f012 | 6420 | return __ostream_insert(__os, __str.data(), __str.size()); |
d978d656 | 6421 | } |
1d487aca | 6422 | |
3d30b815 | 6423 | /** |
6424 | * @brief Read a line from stream into a string. | |
e12e4f3b | 6425 | * @param __is Input stream. |
6426 | * @param __str Buffer to store into. | |
6427 | * @param __delim Character marking end of line. | |
3d30b815 | 6428 | * @return Reference to the input stream. |
6429 | * | |
e12e4f3b | 6430 | * Stores characters from @a __is into @a __str until @a __delim is |
6431 | * found, the end of the stream is encountered, or str.max_size() | |
5f233c40 | 6432 | * is reached. Any previous contents of @a __str are erased. If |
6433 | * @a __delim is encountered, it is extracted but not stored into | |
6434 | * @a __str. | |
3d30b815 | 6435 | */ |
1d487aca | 6436 | template<typename _CharT, typename _Traits, typename _Alloc> |
5712dd7d | 6437 | basic_istream<_CharT, _Traits>& |
1d487aca | 6438 | getline(basic_istream<_CharT, _Traits>& __is, |
6439 | basic_string<_CharT, _Traits, _Alloc>& __str, _CharT __delim); | |
6440 | ||
3d30b815 | 6441 | /** |
6442 | * @brief Read a line from stream into a string. | |
e12e4f3b | 6443 | * @param __is Input stream. |
6444 | * @param __str Buffer to store into. | |
3d30b815 | 6445 | * @return Reference to the input stream. |
6446 | * | |
e12e4f3b | 6447 | * Stores characters from is into @a __str until '\n' is |
72117d76 | 6448 | * found, the end of the stream is encountered, or str.max_size() |
5f233c40 | 6449 | * is reached. Any previous contents of @a __str are erased. If |
6450 | * end of line is encountered, it is extracted but not stored into | |
6451 | * @a __str. | |
3d30b815 | 6452 | */ |
1d487aca | 6453 | template<typename _CharT, typename _Traits, typename _Alloc> |
5712dd7d | 6454 | inline basic_istream<_CharT, _Traits>& |
1d487aca | 6455 | getline(basic_istream<_CharT, _Traits>& __is, |
7e9db36e | 6456 | basic_string<_CharT, _Traits, _Alloc>& __str) |
ffd88516 | 6457 | { return std::getline(__is, __str, __is.widen('\n')); } |
6458 | ||
6459 | #if __cplusplus >= 201103L | |
6460 | /// Read a line from an rvalue stream into a string. | |
6461 | template<typename _CharT, typename _Traits, typename _Alloc> | |
41157b51 | 6462 | inline basic_istream<_CharT, _Traits>& |
ffd88516 | 6463 | getline(basic_istream<_CharT, _Traits>&& __is, |
6464 | basic_string<_CharT, _Traits, _Alloc>& __str, _CharT __delim) | |
6465 | { return std::getline(__is, __str, __delim); } | |
6466 | ||
6467 | /// Read a line from an rvalue stream into a string. | |
6468 | template<typename _CharT, typename _Traits, typename _Alloc> | |
6469 | inline basic_istream<_CharT, _Traits>& | |
6470 | getline(basic_istream<_CharT, _Traits>&& __is, | |
6471 | basic_string<_CharT, _Traits, _Alloc>& __str) | |
6472 | { return std::getline(__is, __str); } | |
6473 | #endif | |
7e9db36e | 6474 | |
5712dd7d | 6475 | template<> |
6476 | basic_istream<char>& | |
6477 | getline(basic_istream<char>& __in, basic_string<char>& __str, | |
6478 | char __delim); | |
6479 | ||
6480 | #ifdef _GLIBCXX_USE_WCHAR_T | |
6481 | template<> | |
6482 | basic_istream<wchar_t>& | |
6483 | getline(basic_istream<wchar_t>& __in, basic_string<wchar_t>& __str, | |
6484 | wchar_t __delim); | |
6485 | #endif | |
1069247d | 6486 | |
2948dd21 | 6487 | _GLIBCXX_END_NAMESPACE_VERSION |
6488 | } // namespace | |
e0597039 | 6489 | |
bdb62e6a | 6490 | #if __cplusplus >= 201103L |
e0597039 | 6491 | |
6491d7f2 | 6492 | #include <ext/string_conversions.h> |
e0597039 | 6493 | |
2948dd21 | 6494 | namespace std _GLIBCXX_VISIBILITY(default) |
6495 | { | |
6496 | _GLIBCXX_BEGIN_NAMESPACE_VERSION | |
63f54259 | 6497 | _GLIBCXX_BEGIN_NAMESPACE_CXX11 |
e0597039 | 6498 | |
bdb62e6a | 6499 | #if _GLIBCXX_USE_C99_STDLIB |
6491d7f2 | 6500 | // 21.4 Numeric Conversions [string.conversions]. |
6501 | inline int | |
6502 | stoi(const string& __str, size_t* __idx = 0, int __base = 10) | |
6503 | { return __gnu_cxx::__stoa<long, int>(&std::strtol, "stoi", __str.c_str(), | |
6504 | __idx, __base); } | |
6505 | ||
6506 | inline long | |
6507 | stol(const string& __str, size_t* __idx = 0, int __base = 10) | |
6508 | { return __gnu_cxx::__stoa(&std::strtol, "stol", __str.c_str(), | |
6509 | __idx, __base); } | |
6510 | ||
6511 | inline unsigned long | |
6512 | stoul(const string& __str, size_t* __idx = 0, int __base = 10) | |
6513 | { return __gnu_cxx::__stoa(&std::strtoul, "stoul", __str.c_str(), | |
6514 | __idx, __base); } | |
6515 | ||
6516 | inline long long | |
6517 | stoll(const string& __str, size_t* __idx = 0, int __base = 10) | |
6518 | { return __gnu_cxx::__stoa(&std::strtoll, "stoll", __str.c_str(), | |
6519 | __idx, __base); } | |
6520 | ||
6521 | inline unsigned long long | |
6522 | stoull(const string& __str, size_t* __idx = 0, int __base = 10) | |
6523 | { return __gnu_cxx::__stoa(&std::strtoull, "stoull", __str.c_str(), | |
6524 | __idx, __base); } | |
6525 | ||
6526 | // NB: strtof vs strtod. | |
6527 | inline float | |
6528 | stof(const string& __str, size_t* __idx = 0) | |
6529 | { return __gnu_cxx::__stoa(&std::strtof, "stof", __str.c_str(), __idx); } | |
6530 | ||
6531 | inline double | |
6532 | stod(const string& __str, size_t* __idx = 0) | |
6533 | { return __gnu_cxx::__stoa(&std::strtod, "stod", __str.c_str(), __idx); } | |
6534 | ||
6535 | inline long double | |
6536 | stold(const string& __str, size_t* __idx = 0) | |
6537 | { return __gnu_cxx::__stoa(&std::strtold, "stold", __str.c_str(), __idx); } | |
bdb62e6a | 6538 | #endif // _GLIBCXX_USE_C99_STDLIB |
6491d7f2 | 6539 | |
bdb62e6a | 6540 | #if _GLIBCXX_USE_C99_STDIO |
6491d7f2 | 6541 | // NB: (v)snprintf vs sprintf. |
7a667a79 | 6542 | |
6543 | // DR 1261. | |
6544 | inline string | |
6545 | to_string(int __val) | |
6546 | { return __gnu_cxx::__to_xstring<string>(&std::vsnprintf, 4 * sizeof(int), | |
6547 | "%d", __val); } | |
6548 | ||
6549 | inline string | |
6550 | to_string(unsigned __val) | |
6551 | { return __gnu_cxx::__to_xstring<string>(&std::vsnprintf, | |
6552 | 4 * sizeof(unsigned), | |
6553 | "%u", __val); } | |
6554 | ||
6555 | inline string | |
6556 | to_string(long __val) | |
6557 | { return __gnu_cxx::__to_xstring<string>(&std::vsnprintf, 4 * sizeof(long), | |
6558 | "%ld", __val); } | |
6559 | ||
6560 | inline string | |
6561 | to_string(unsigned long __val) | |
6562 | { return __gnu_cxx::__to_xstring<string>(&std::vsnprintf, | |
6563 | 4 * sizeof(unsigned long), | |
6564 | "%lu", __val); } | |
6565 | ||
6491d7f2 | 6566 | inline string |
6567 | to_string(long long __val) | |
6568 | { return __gnu_cxx::__to_xstring<string>(&std::vsnprintf, | |
6569 | 4 * sizeof(long long), | |
6570 | "%lld", __val); } | |
6571 | ||
6572 | inline string | |
6573 | to_string(unsigned long long __val) | |
6574 | { return __gnu_cxx::__to_xstring<string>(&std::vsnprintf, | |
6575 | 4 * sizeof(unsigned long long), | |
6576 | "%llu", __val); } | |
6577 | ||
7a667a79 | 6578 | inline string |
6579 | to_string(float __val) | |
6580 | { | |
6581 | const int __n = | |
6582 | __gnu_cxx::__numeric_traits<float>::__max_exponent10 + 20; | |
6583 | return __gnu_cxx::__to_xstring<string>(&std::vsnprintf, __n, | |
6584 | "%f", __val); | |
6585 | } | |
6586 | ||
6587 | inline string | |
6588 | to_string(double __val) | |
6589 | { | |
6590 | const int __n = | |
6591 | __gnu_cxx::__numeric_traits<double>::__max_exponent10 + 20; | |
6592 | return __gnu_cxx::__to_xstring<string>(&std::vsnprintf, __n, | |
6593 | "%f", __val); | |
6594 | } | |
6595 | ||
6491d7f2 | 6596 | inline string |
6597 | to_string(long double __val) | |
6598 | { | |
6599 | const int __n = | |
6600 | __gnu_cxx::__numeric_traits<long double>::__max_exponent10 + 20; | |
6601 | return __gnu_cxx::__to_xstring<string>(&std::vsnprintf, __n, | |
6602 | "%Lf", __val); | |
6603 | } | |
bdb62e6a | 6604 | #endif // _GLIBCXX_USE_C99_STDIO |
e0597039 | 6605 | |
6bf8cb11 | 6606 | #if defined(_GLIBCXX_USE_WCHAR_T) && _GLIBCXX_USE_C99_WCHAR |
6491d7f2 | 6607 | inline int |
6608 | stoi(const wstring& __str, size_t* __idx = 0, int __base = 10) | |
6609 | { return __gnu_cxx::__stoa<long, int>(&std::wcstol, "stoi", __str.c_str(), | |
6610 | __idx, __base); } | |
6611 | ||
6612 | inline long | |
6613 | stol(const wstring& __str, size_t* __idx = 0, int __base = 10) | |
6614 | { return __gnu_cxx::__stoa(&std::wcstol, "stol", __str.c_str(), | |
6615 | __idx, __base); } | |
6616 | ||
6617 | inline unsigned long | |
6618 | stoul(const wstring& __str, size_t* __idx = 0, int __base = 10) | |
6619 | { return __gnu_cxx::__stoa(&std::wcstoul, "stoul", __str.c_str(), | |
6620 | __idx, __base); } | |
6621 | ||
6622 | inline long long | |
6623 | stoll(const wstring& __str, size_t* __idx = 0, int __base = 10) | |
6624 | { return __gnu_cxx::__stoa(&std::wcstoll, "stoll", __str.c_str(), | |
6625 | __idx, __base); } | |
6626 | ||
6627 | inline unsigned long long | |
6628 | stoull(const wstring& __str, size_t* __idx = 0, int __base = 10) | |
6629 | { return __gnu_cxx::__stoa(&std::wcstoull, "stoull", __str.c_str(), | |
6630 | __idx, __base); } | |
6631 | ||
6632 | // NB: wcstof vs wcstod. | |
6633 | inline float | |
6634 | stof(const wstring& __str, size_t* __idx = 0) | |
6635 | { return __gnu_cxx::__stoa(&std::wcstof, "stof", __str.c_str(), __idx); } | |
6636 | ||
6637 | inline double | |
6638 | stod(const wstring& __str, size_t* __idx = 0) | |
6639 | { return __gnu_cxx::__stoa(&std::wcstod, "stod", __str.c_str(), __idx); } | |
6640 | ||
6641 | inline long double | |
6642 | stold(const wstring& __str, size_t* __idx = 0) | |
6643 | { return __gnu_cxx::__stoa(&std::wcstold, "stold", __str.c_str(), __idx); } | |
6644 | ||
46a8176d | 6645 | #ifndef _GLIBCXX_HAVE_BROKEN_VSWPRINTF |
7a667a79 | 6646 | // DR 1261. |
6647 | inline wstring | |
6648 | to_wstring(int __val) | |
6649 | { return __gnu_cxx::__to_xstring<wstring>(&std::vswprintf, 4 * sizeof(int), | |
6650 | L"%d", __val); } | |
6651 | ||
6652 | inline wstring | |
6653 | to_wstring(unsigned __val) | |
6654 | { return __gnu_cxx::__to_xstring<wstring>(&std::vswprintf, | |
6655 | 4 * sizeof(unsigned), | |
6656 | L"%u", __val); } | |
6657 | ||
6658 | inline wstring | |
6659 | to_wstring(long __val) | |
6660 | { return __gnu_cxx::__to_xstring<wstring>(&std::vswprintf, 4 * sizeof(long), | |
6661 | L"%ld", __val); } | |
6662 | ||
6663 | inline wstring | |
6664 | to_wstring(unsigned long __val) | |
6665 | { return __gnu_cxx::__to_xstring<wstring>(&std::vswprintf, | |
6666 | 4 * sizeof(unsigned long), | |
6667 | L"%lu", __val); } | |
6668 | ||
6491d7f2 | 6669 | inline wstring |
6670 | to_wstring(long long __val) | |
6671 | { return __gnu_cxx::__to_xstring<wstring>(&std::vswprintf, | |
6672 | 4 * sizeof(long long), | |
6673 | L"%lld", __val); } | |
6674 | ||
6675 | inline wstring | |
6676 | to_wstring(unsigned long long __val) | |
6677 | { return __gnu_cxx::__to_xstring<wstring>(&std::vswprintf, | |
6678 | 4 * sizeof(unsigned long long), | |
6679 | L"%llu", __val); } | |
6680 | ||
7a667a79 | 6681 | inline wstring |
6682 | to_wstring(float __val) | |
6683 | { | |
6684 | const int __n = | |
6685 | __gnu_cxx::__numeric_traits<float>::__max_exponent10 + 20; | |
6686 | return __gnu_cxx::__to_xstring<wstring>(&std::vswprintf, __n, | |
6687 | L"%f", __val); | |
6688 | } | |
6689 | ||
6690 | inline wstring | |
6691 | to_wstring(double __val) | |
6692 | { | |
6693 | const int __n = | |
6694 | __gnu_cxx::__numeric_traits<double>::__max_exponent10 + 20; | |
6695 | return __gnu_cxx::__to_xstring<wstring>(&std::vswprintf, __n, | |
6696 | L"%f", __val); | |
6697 | } | |
6698 | ||
6491d7f2 | 6699 | inline wstring |
6700 | to_wstring(long double __val) | |
6701 | { | |
6702 | const int __n = | |
6703 | __gnu_cxx::__numeric_traits<long double>::__max_exponent10 + 20; | |
6704 | return __gnu_cxx::__to_xstring<wstring>(&std::vswprintf, __n, | |
6705 | L"%Lf", __val); | |
6706 | } | |
46a8176d | 6707 | #endif // _GLIBCXX_HAVE_BROKEN_VSWPRINTF |
bdb62e6a | 6708 | #endif // _GLIBCXX_USE_WCHAR_T && _GLIBCXX_USE_C99_WCHAR |
e0597039 | 6709 | |
63f54259 | 6710 | _GLIBCXX_END_NAMESPACE_CXX11 |
2948dd21 | 6711 | _GLIBCXX_END_NAMESPACE_VERSION |
6712 | } // namespace | |
1d487aca | 6713 | |
bdb62e6a | 6714 | #endif /* C++11 */ |
2c63b18a | 6715 | |
0c8766b1 | 6716 | #if __cplusplus >= 201103L |
2c63b18a | 6717 | |
6718 | #include <bits/functional_hash.h> | |
6719 | ||
2948dd21 | 6720 | namespace std _GLIBCXX_VISIBILITY(default) |
6721 | { | |
6722 | _GLIBCXX_BEGIN_NAMESPACE_VERSION | |
2c63b18a | 6723 | |
6724 | // DR 1182. | |
6725 | ||
6726 | #ifndef _GLIBCXX_COMPATIBILITY_CXX0X | |
6727 | /// std::hash specialization for string. | |
6728 | template<> | |
6729 | struct hash<string> | |
a0f415f0 | 6730 | : public __hash_base<size_t, string> |
2c63b18a | 6731 | { |
6732 | size_t | |
d377f164 | 6733 | operator()(const string& __s) const noexcept |
10122a90 | 6734 | { return std::_Hash_impl::hash(__s.data(), __s.length()); } |
2c63b18a | 6735 | }; |
6736 | ||
23d37682 | 6737 | template<> |
6738 | struct __is_fast_hash<hash<string>> : std::false_type | |
6739 | { }; | |
6740 | ||
2c63b18a | 6741 | #ifdef _GLIBCXX_USE_WCHAR_T |
6742 | /// std::hash specialization for wstring. | |
6743 | template<> | |
6744 | struct hash<wstring> | |
a0f415f0 | 6745 | : public __hash_base<size_t, wstring> |
2c63b18a | 6746 | { |
6747 | size_t | |
d377f164 | 6748 | operator()(const wstring& __s) const noexcept |
10122a90 | 6749 | { return std::_Hash_impl::hash(__s.data(), |
6750 | __s.length() * sizeof(wchar_t)); } | |
2c63b18a | 6751 | }; |
23d37682 | 6752 | |
6753 | template<> | |
6754 | struct __is_fast_hash<hash<wstring>> : std::false_type | |
6755 | { }; | |
6491d7f2 | 6756 | #endif |
2c63b18a | 6757 | #endif /* _GLIBCXX_COMPATIBILITY_CXX0X */ |
6758 | ||
25694c85 | 6759 | #ifdef _GLIBCXX_USE_CHAR8_T |
6760 | /// std::hash specialization for u8string. | |
6761 | template<> | |
6762 | struct hash<u8string> | |
6763 | : public __hash_base<size_t, u8string> | |
6764 | { | |
6765 | size_t | |
6766 | operator()(const u8string& __s) const noexcept | |
6767 | { return std::_Hash_impl::hash(__s.data(), | |
6768 | __s.length() * sizeof(char8_t)); } | |
6769 | }; | |
6770 | ||
6771 | template<> | |
6772 | struct __is_fast_hash<hash<u8string>> : std::false_type | |
6773 | { }; | |
6774 | #endif | |
6775 | ||
2c63b18a | 6776 | /// std::hash specialization for u16string. |
6777 | template<> | |
6778 | struct hash<u16string> | |
a0f415f0 | 6779 | : public __hash_base<size_t, u16string> |
2c63b18a | 6780 | { |
6781 | size_t | |
d377f164 | 6782 | operator()(const u16string& __s) const noexcept |
10122a90 | 6783 | { return std::_Hash_impl::hash(__s.data(), |
6784 | __s.length() * sizeof(char16_t)); } | |
2c63b18a | 6785 | }; |
6786 | ||
23d37682 | 6787 | template<> |
6788 | struct __is_fast_hash<hash<u16string>> : std::false_type | |
6789 | { }; | |
6790 | ||
2c63b18a | 6791 | /// std::hash specialization for u32string. |
6792 | template<> | |
6793 | struct hash<u32string> | |
a0f415f0 | 6794 | : public __hash_base<size_t, u32string> |
2c63b18a | 6795 | { |
6796 | size_t | |
d377f164 | 6797 | operator()(const u32string& __s) const noexcept |
10122a90 | 6798 | { return std::_Hash_impl::hash(__s.data(), |
6799 | __s.length() * sizeof(char32_t)); } | |
2c63b18a | 6800 | }; |
23d37682 | 6801 | |
6802 | template<> | |
6803 | struct __is_fast_hash<hash<u32string>> : std::false_type | |
6804 | { }; | |
2c63b18a | 6805 | |
781cb64d | 6806 | #if __cplusplus >= 201402L |
47269859 | 6807 | |
f6751ff2 | 6808 | #define __cpp_lib_string_udls 201304 |
6809 | ||
706144c4 | 6810 | inline namespace literals |
6811 | { | |
6812 | inline namespace string_literals | |
6813 | { | |
1ca8c276 | 6814 | #pragma GCC diagnostic push |
6815 | #pragma GCC diagnostic ignored "-Wliteral-suffix" | |
63f54259 | 6816 | _GLIBCXX_DEFAULT_ABI_TAG |
05eceb70 | 6817 | inline basic_string<char> |
c713de3a | 6818 | operator""s(const char* __str, size_t __len) |
05eceb70 | 6819 | { return basic_string<char>{__str, __len}; } |
47269859 | 6820 | |
6821 | #ifdef _GLIBCXX_USE_WCHAR_T | |
63f54259 | 6822 | _GLIBCXX_DEFAULT_ABI_TAG |
05eceb70 | 6823 | inline basic_string<wchar_t> |
c713de3a | 6824 | operator""s(const wchar_t* __str, size_t __len) |
05eceb70 | 6825 | { return basic_string<wchar_t>{__str, __len}; } |
47269859 | 6826 | #endif |
6827 | ||
25694c85 | 6828 | #ifdef _GLIBCXX_USE_CHAR8_T |
6829 | _GLIBCXX_DEFAULT_ABI_TAG | |
6830 | inline basic_string<char8_t> | |
6831 | operator""s(const char8_t* __str, size_t __len) | |
6832 | { return basic_string<char8_t>{__str, __len}; } | |
6833 | #endif | |
6834 | ||
63f54259 | 6835 | _GLIBCXX_DEFAULT_ABI_TAG |
05eceb70 | 6836 | inline basic_string<char16_t> |
c713de3a | 6837 | operator""s(const char16_t* __str, size_t __len) |
05eceb70 | 6838 | { return basic_string<char16_t>{__str, __len}; } |
47269859 | 6839 | |
63f54259 | 6840 | _GLIBCXX_DEFAULT_ABI_TAG |
05eceb70 | 6841 | inline basic_string<char32_t> |
c713de3a | 6842 | operator""s(const char32_t* __str, size_t __len) |
05eceb70 | 6843 | { return basic_string<char32_t>{__str, __len}; } |
47269859 | 6844 | |
1ca8c276 | 6845 | #pragma GCC diagnostic pop |
05eceb70 | 6846 | } // inline namespace string_literals |
6847 | } // inline namespace literals | |
6848 | ||
781cb64d | 6849 | #if __cplusplus >= 201703L |
6850 | namespace __detail::__variant | |
6851 | { | |
6852 | template<typename> struct _Never_valueless_alt; // see <variant> | |
6853 | ||
6854 | // Provide the strong exception-safety guarantee when emplacing a | |
b9d8292f | 6855 | // basic_string into a variant, but only if moving the string cannot throw. |
781cb64d | 6856 | template<typename _Tp, typename _Traits, typename _Alloc> |
6857 | struct _Never_valueless_alt<std::basic_string<_Tp, _Traits, _Alloc>> | |
b9d8292f | 6858 | : __and_< |
6859 | is_nothrow_move_constructible<std::basic_string<_Tp, _Traits, _Alloc>>, | |
6860 | is_nothrow_move_assignable<std::basic_string<_Tp, _Traits, _Alloc>> | |
6861 | >::type | |
781cb64d | 6862 | { }; |
6863 | } // namespace __detail::__variant | |
6864 | #endif // C++17 | |
6865 | #endif // C++14 | |
47269859 | 6866 | |
ae6a4ce9 | 6867 | _GLIBCXX_END_NAMESPACE_VERSION |
47269859 | 6868 | } // namespace std |
6869 | ||
0c8766b1 | 6870 | #endif // C++11 |
6491d7f2 | 6871 | |
5a64d8cf | 6872 | #endif /* _BASIC_STRING_H */ |