1 | // Components for manipulating sequences of characters -*- C++ -*- |
2 | |
3 | // Copyright (C) 1997-2023 Free Software Foundation, Inc. |
4 | // |
5 | // This file is part of the GNU ISO C++ Library. This library is free |
6 | // software; you can redistribute it and/or modify it under the |
7 | // terms of the GNU General Public License as published by the |
8 | // Free Software Foundation; either version 3, or (at your option) |
9 | // any later version. |
10 | |
11 | // This library is distributed in the hope that it will be useful, |
12 | // but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 | // GNU General Public License for more details. |
15 | |
16 | // Under Section 7 of GPL version 3, you are granted additional |
17 | // permissions described in the GCC Runtime Library Exception, version |
18 | // 3.1, as published by the Free Software Foundation. |
19 | |
20 | // You should have received a copy of the GNU General Public License and |
21 | // a copy of the GCC Runtime Library Exception along with this program; |
22 | // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
23 | // <http://www.gnu.org/licenses/>. |
24 | |
25 | /** @file bits/basic_string.h |
26 | * This is an internal header file, included by other library headers. |
27 | * Do not attempt to use it directly. @headername{string} |
28 | */ |
29 | |
30 | // |
31 | // ISO C++ 14882: 21 Strings library |
32 | // |
33 | |
34 | #ifndef _BASIC_STRING_H |
35 | #define _BASIC_STRING_H 1 |
36 | |
37 | #pragma GCC system_header |
38 | |
39 | #include <ext/alloc_traits.h> |
40 | #include <debug/debug.h> |
41 | |
42 | #if __cplusplus >= 201103L |
43 | #include <initializer_list> |
44 | #endif |
45 | |
46 | #if __cplusplus >= 201703L |
47 | # include <string_view> |
48 | #endif |
49 | |
50 | #if ! _GLIBCXX_USE_CXX11_ABI |
51 | # include "cow_string.h" |
52 | #else |
53 | namespace std _GLIBCXX_VISIBILITY(default) |
54 | { |
55 | _GLIBCXX_BEGIN_NAMESPACE_VERSION |
56 | _GLIBCXX_BEGIN_NAMESPACE_CXX11 |
57 | |
58 | #ifdef __cpp_lib_is_constant_evaluated |
59 | // Support P0980R1 in C++20. |
60 | # define __cpp_lib_constexpr_string 201907L |
61 | #elif __cplusplus >= 201703L && _GLIBCXX_HAVE_IS_CONSTANT_EVALUATED |
62 | // Support P0426R1 changes to char_traits in C++17. |
63 | # define __cpp_lib_constexpr_string 201611L |
64 | #endif |
65 | |
66 | /** |
67 | * @class basic_string basic_string.h <string> |
68 | * @brief Managing sequences of characters and character-like objects. |
69 | * |
70 | * @ingroup strings |
71 | * @ingroup sequences |
72 | * @headerfile string |
73 | * @since C++98 |
74 | * |
75 | * @tparam _CharT Type of character |
76 | * @tparam _Traits Traits for character type, defaults to |
77 | * char_traits<_CharT>. |
78 | * @tparam _Alloc Allocator type, defaults to allocator<_CharT>. |
79 | * |
80 | * Meets the requirements of a <a href="tables.html#65">container</a>, a |
81 | * <a href="tables.html#66">reversible container</a>, and a |
82 | * <a href="tables.html#67">sequence</a>. Of the |
83 | * <a href="tables.html#68">optional sequence requirements</a>, only |
84 | * @c push_back, @c at, and @c %array access are supported. |
85 | */ |
86 | template<typename _CharT, typename _Traits, typename _Alloc> |
87 | class basic_string |
88 | { |
89 | typedef typename __gnu_cxx::__alloc_traits<_Alloc>::template |
90 | rebind<_CharT>::other _Char_alloc_type; |
91 | |
92 | typedef __gnu_cxx::__alloc_traits<_Char_alloc_type> _Alloc_traits; |
93 | |
94 | // Types: |
95 | public: |
96 | typedef _Traits traits_type; |
97 | typedef typename _Traits::char_type value_type; |
98 | typedef _Char_alloc_type allocator_type; |
99 | typedef typename _Alloc_traits::size_type size_type; |
100 | typedef typename _Alloc_traits::difference_type difference_type; |
101 | typedef typename _Alloc_traits::reference reference; |
102 | typedef typename _Alloc_traits::const_reference const_reference; |
103 | typedef typename _Alloc_traits::pointer pointer; |
104 | typedef typename _Alloc_traits::const_pointer const_pointer; |
105 | typedef __gnu_cxx::__normal_iterator<pointer, basic_string> iterator; |
106 | typedef __gnu_cxx::__normal_iterator<const_pointer, basic_string> |
107 | const_iterator; |
108 | typedef std::reverse_iterator<const_iterator> const_reverse_iterator; |
109 | typedef std::reverse_iterator<iterator> reverse_iterator; |
110 | |
111 | /// Value returned by various member functions when they fail. |
112 | static const size_type npos = static_cast<size_type>(-1); |
113 | |
114 | protected: |
115 | // type used for positions in insert, erase etc. |
116 | #if __cplusplus < 201103L |
117 | typedef iterator __const_iterator; |
118 | #else |
119 | typedef const_iterator __const_iterator; |
120 | #endif |
121 | |
122 | private: |
123 | static _GLIBCXX20_CONSTEXPR pointer |
124 | _S_allocate(_Char_alloc_type& __a, size_type __n) |
125 | { |
126 | pointer __p = _Alloc_traits::allocate(__a, __n); |
127 | #if __cpp_lib_constexpr_string >= 201907L |
128 | // std::char_traits begins the lifetime of characters, |
129 | // but custom traits might not, so do it here. |
130 | if constexpr (!is_same_v<_Traits, char_traits<_CharT>>) |
131 | if (std::__is_constant_evaluated()) |
132 | // Begin the lifetime of characters in allocated storage. |
133 | for (size_type __i = 0; __i < __n; ++__i) |
134 | std::construct_at(__builtin_addressof(__p[__i])); |
135 | #endif |
136 | return __p; |
137 | } |
138 | |
139 | #if __cplusplus >= 201703L |
140 | // A helper type for avoiding boiler-plate. |
141 | typedef basic_string_view<_CharT, _Traits> __sv_type; |
142 | |
143 | template<typename _Tp, typename _Res> |
144 | using _If_sv = enable_if_t< |
145 | __and_<is_convertible<const _Tp&, __sv_type>, |
146 | __not_<is_convertible<const _Tp*, const basic_string*>>, |
147 | __not_<is_convertible<const _Tp&, const _CharT*>>>::value, |
148 | _Res>; |
149 | |
150 | // Allows an implicit conversion to __sv_type. |
151 | _GLIBCXX20_CONSTEXPR |
152 | static __sv_type |
153 | _S_to_string_view(__sv_type __svt) noexcept |
154 | { return __svt; } |
155 | |
156 | // Wraps a string_view by explicit conversion and thus |
157 | // allows to add an internal constructor that does not |
158 | // participate in overload resolution when a string_view |
159 | // is provided. |
160 | struct __sv_wrapper |
161 | { |
162 | _GLIBCXX20_CONSTEXPR explicit |
163 | __sv_wrapper(__sv_type __sv) noexcept : _M_sv(__sv) { } |
164 | |
165 | __sv_type _M_sv; |
166 | }; |
167 | |
168 | /** |
169 | * @brief Only internally used: Construct string from a string view |
170 | * wrapper. |
171 | * @param __svw string view wrapper. |
172 | * @param __a Allocator to use. |
173 | */ |
174 | _GLIBCXX20_CONSTEXPR |
175 | explicit |
176 | basic_string(__sv_wrapper __svw, const _Alloc& __a) |
177 | : basic_string(__svw._M_sv.data(), __svw._M_sv.size(), __a) { } |
178 | #endif |
179 | |
180 | // Use empty-base optimization: http://www.cantrip.org/emptyopt.html |
181 | struct _Alloc_hider : allocator_type // TODO check __is_final |
182 | { |
183 | #if __cplusplus < 201103L |
184 | _Alloc_hider(pointer __dat, const _Alloc& __a = _Alloc()) |
185 | : allocator_type(__a), _M_p(__dat) { } |
186 | #else |
187 | _GLIBCXX20_CONSTEXPR |
188 | _Alloc_hider(pointer __dat, const _Alloc& __a) |
189 | : allocator_type(__a), _M_p(__dat) { } |
190 | |
191 | _GLIBCXX20_CONSTEXPR |
192 | _Alloc_hider(pointer __dat, _Alloc&& __a = _Alloc()) |
193 | : allocator_type(std::move(__a)), _M_p(__dat) { } |
194 | #endif |
195 | |
196 | pointer _M_p; // The actual data. |
197 | }; |
198 | |
199 | _Alloc_hider _M_dataplus; |
200 | size_type _M_string_length; |
201 | |
202 | enum { _S_local_capacity = 15 / sizeof(_CharT) }; |
203 | |
204 | union |
205 | { |
206 | _CharT _M_local_buf[_S_local_capacity + 1]; |
207 | size_type _M_allocated_capacity; |
208 | }; |
209 | |
210 | _GLIBCXX20_CONSTEXPR |
211 | void |
212 | _M_data(pointer __p) |
213 | { _M_dataplus._M_p = __p; } |
214 | |
215 | _GLIBCXX20_CONSTEXPR |
216 | void |
217 | _M_length(size_type __length) |
218 | { _M_string_length = __length; } |
219 | |
220 | _GLIBCXX20_CONSTEXPR |
221 | pointer |
222 | _M_data() const |
223 | { return _M_dataplus._M_p; } |
224 | |
225 | _GLIBCXX20_CONSTEXPR |
226 | pointer |
227 | _M_local_data() |
228 | { |
229 | #if __cplusplus >= 201103L |
230 | return std::pointer_traits<pointer>::pointer_to(*_M_local_buf); |
231 | #else |
232 | return pointer(_M_local_buf); |
233 | #endif |
234 | } |
235 | |
236 | _GLIBCXX20_CONSTEXPR |
237 | const_pointer |
238 | _M_local_data() const |
239 | { |
240 | #if __cplusplus >= 201103L |
241 | return std::pointer_traits<const_pointer>::pointer_to(*_M_local_buf); |
242 | #else |
243 | return const_pointer(_M_local_buf); |
244 | #endif |
245 | } |
246 | |
247 | _GLIBCXX20_CONSTEXPR |
248 | void |
249 | _M_capacity(size_type __capacity) |
250 | { _M_allocated_capacity = __capacity; } |
251 | |
252 | _GLIBCXX20_CONSTEXPR |
253 | void |
254 | _M_set_length(size_type __n) |
255 | { |
256 | _M_length(length: __n); |
257 | traits_type::assign(_M_data()[__n], _CharT()); |
258 | } |
259 | |
260 | _GLIBCXX20_CONSTEXPR |
261 | bool |
262 | _M_is_local() const |
263 | { |
264 | if (_M_data() == _M_local_data()) |
265 | { |
266 | if (_M_string_length > _S_local_capacity) |
267 | __builtin_unreachable(); |
268 | return true; |
269 | } |
270 | return false; |
271 | } |
272 | |
273 | // Create & Destroy |
274 | _GLIBCXX20_CONSTEXPR |
275 | pointer |
276 | _M_create(size_type&, size_type); |
277 | |
278 | _GLIBCXX20_CONSTEXPR |
279 | void |
280 | _M_dispose() |
281 | { |
282 | if (!_M_is_local()) |
283 | _M_destroy(size: _M_allocated_capacity); |
284 | } |
285 | |
286 | _GLIBCXX20_CONSTEXPR |
287 | void |
288 | _M_destroy(size_type __size) throw() |
289 | { _Alloc_traits::deallocate(_M_get_allocator(), _M_data(), __size + 1); } |
290 | |
291 | #if __cplusplus < 201103L || defined _GLIBCXX_DEFINING_STRING_INSTANTIATIONS |
292 | // _M_construct_aux is used to implement the 21.3.1 para 15 which |
293 | // requires special behaviour if _InIterator is an integral type |
294 | template<typename _InIterator> |
295 | void |
296 | _M_construct_aux(_InIterator __beg, _InIterator __end, |
297 | std::__false_type) |
298 | { |
299 | typedef typename iterator_traits<_InIterator>::iterator_category _Tag; |
300 | _M_construct(__beg, __end, _Tag()); |
301 | } |
302 | |
303 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
304 | // 438. Ambiguity in the "do the right thing" clause |
305 | template<typename _Integer> |
306 | void |
307 | _M_construct_aux(_Integer __beg, _Integer __end, std::__true_type) |
308 | { _M_construct_aux_2(static_cast<size_type>(__beg), __end); } |
309 | |
310 | void |
311 | _M_construct_aux_2(size_type __req, _CharT __c) |
312 | { _M_construct(__req, __c); } |
313 | #endif |
314 | |
315 | // For Input Iterators, used in istreambuf_iterators, etc. |
316 | template<typename _InIterator> |
317 | _GLIBCXX20_CONSTEXPR |
318 | void |
319 | _M_construct(_InIterator __beg, _InIterator __end, |
320 | std::input_iterator_tag); |
321 | |
322 | // For forward_iterators up to random_access_iterators, used for |
323 | // string::iterator, _CharT*, etc. |
324 | template<typename _FwdIterator> |
325 | _GLIBCXX20_CONSTEXPR |
326 | void |
327 | _M_construct(_FwdIterator __beg, _FwdIterator __end, |
328 | std::forward_iterator_tag); |
329 | |
330 | _GLIBCXX20_CONSTEXPR |
331 | void |
332 | _M_construct(size_type __req, _CharT __c); |
333 | |
334 | _GLIBCXX20_CONSTEXPR |
335 | allocator_type& |
336 | _M_get_allocator() |
337 | { return _M_dataplus; } |
338 | |
339 | _GLIBCXX20_CONSTEXPR |
340 | const allocator_type& |
341 | _M_get_allocator() const |
342 | { return _M_dataplus; } |
343 | |
344 | // Ensure that _M_local_buf is the active member of the union. |
345 | __attribute__((__always_inline__)) |
346 | _GLIBCXX14_CONSTEXPR |
347 | void |
348 | _M_init_local_buf() _GLIBCXX_NOEXCEPT |
349 | { |
350 | #if __cpp_lib_is_constant_evaluated |
351 | if (std::is_constant_evaluated()) |
352 | for (size_type __i = 0; __i <= _S_local_capacity; ++__i) |
353 | _M_local_buf[__i] = _CharT(); |
354 | #endif |
355 | } |
356 | |
357 | __attribute__((__always_inline__)) |
358 | _GLIBCXX14_CONSTEXPR |
359 | pointer |
360 | _M_use_local_data() _GLIBCXX_NOEXCEPT |
361 | { |
362 | #if __cpp_lib_is_constant_evaluated |
363 | _M_init_local_buf(); |
364 | #endif |
365 | return _M_local_data(); |
366 | } |
367 | |
368 | private: |
369 | |
370 | #ifdef _GLIBCXX_DISAMBIGUATE_REPLACE_INST |
371 | // The explicit instantiations in misc-inst.cc require this due to |
372 | // https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64063 |
373 | template<typename _Tp, bool _Requires = |
374 | !__are_same<_Tp, _CharT*>::__value |
375 | && !__are_same<_Tp, const _CharT*>::__value |
376 | && !__are_same<_Tp, iterator>::__value |
377 | && !__are_same<_Tp, const_iterator>::__value> |
378 | struct __enable_if_not_native_iterator |
379 | { typedef basic_string& __type; }; |
380 | template<typename _Tp> |
381 | struct __enable_if_not_native_iterator<_Tp, false> { }; |
382 | #endif |
383 | |
384 | _GLIBCXX20_CONSTEXPR |
385 | size_type |
386 | _M_check(size_type __pos, const char* __s) const |
387 | { |
388 | if (__pos > this->size()) |
389 | __throw_out_of_range_fmt(__N("%s: __pos (which is %zu) > " |
390 | "this->size() (which is %zu)" ), |
391 | __s, __pos, this->size()); |
392 | return __pos; |
393 | } |
394 | |
395 | _GLIBCXX20_CONSTEXPR |
396 | void |
397 | _M_check_length(size_type __n1, size_type __n2, const char* __s) const |
398 | { |
399 | if (this->max_size() - (this->size() - __n1) < __n2) |
400 | __throw_length_error(__N(__s)); |
401 | } |
402 | |
403 | |
404 | // NB: _M_limit doesn't check for a bad __pos value. |
405 | _GLIBCXX20_CONSTEXPR |
406 | size_type |
407 | _M_limit(size_type __pos, size_type __off) const _GLIBCXX_NOEXCEPT |
408 | { |
409 | const bool __testoff = __off < this->size() - __pos; |
410 | return __testoff ? __off : this->size() - __pos; |
411 | } |
412 | |
413 | // True if _Rep and source do not overlap. |
414 | bool |
415 | _M_disjunct(const _CharT* __s) const _GLIBCXX_NOEXCEPT |
416 | { |
417 | return (less<const _CharT*>()(__s, _M_data()) |
418 | || less<const _CharT*>()(_M_data() + this->size(), __s)); |
419 | } |
420 | |
421 | // When __n = 1 way faster than the general multichar |
422 | // traits_type::copy/move/assign. |
423 | _GLIBCXX20_CONSTEXPR |
424 | static void |
425 | _S_copy(_CharT* __d, const _CharT* __s, size_type __n) |
426 | { |
427 | if (__n == 1) |
428 | traits_type::assign(*__d, *__s); |
429 | else |
430 | traits_type::copy(__d, __s, __n); |
431 | } |
432 | |
433 | _GLIBCXX20_CONSTEXPR |
434 | static void |
435 | _S_move(_CharT* __d, const _CharT* __s, size_type __n) |
436 | { |
437 | if (__n == 1) |
438 | traits_type::assign(*__d, *__s); |
439 | else |
440 | traits_type::move(__d, __s, __n); |
441 | } |
442 | |
443 | _GLIBCXX20_CONSTEXPR |
444 | static void |
445 | _S_assign(_CharT* __d, size_type __n, _CharT __c) |
446 | { |
447 | if (__n == 1) |
448 | traits_type::assign(*__d, __c); |
449 | else |
450 | traits_type::assign(__d, __n, __c); |
451 | } |
452 | |
453 | // _S_copy_chars is a separate template to permit specialization |
454 | // to optimize for the common case of pointers as iterators. |
455 | template<class _Iterator> |
456 | _GLIBCXX20_CONSTEXPR |
457 | static void |
458 | _S_copy_chars(_CharT* __p, _Iterator __k1, _Iterator __k2) |
459 | { |
460 | for (; __k1 != __k2; ++__k1, (void)++__p) |
461 | traits_type::assign(*__p, *__k1); // These types are off. |
462 | } |
463 | |
464 | _GLIBCXX20_CONSTEXPR |
465 | static void |
466 | _S_copy_chars(_CharT* __p, iterator __k1, iterator __k2) _GLIBCXX_NOEXCEPT |
467 | { _S_copy_chars(__p, __k1.base(), __k2.base()); } |
468 | |
469 | _GLIBCXX20_CONSTEXPR |
470 | static void |
471 | _S_copy_chars(_CharT* __p, const_iterator __k1, const_iterator __k2) |
472 | _GLIBCXX_NOEXCEPT |
473 | { _S_copy_chars(__p, __k1.base(), __k2.base()); } |
474 | |
475 | _GLIBCXX20_CONSTEXPR |
476 | static void |
477 | _S_copy_chars(_CharT* __p, _CharT* __k1, _CharT* __k2) _GLIBCXX_NOEXCEPT |
478 | { _S_copy(d: __p, s: __k1, n: __k2 - __k1); } |
479 | |
480 | _GLIBCXX20_CONSTEXPR |
481 | static void |
482 | _S_copy_chars(_CharT* __p, const _CharT* __k1, const _CharT* __k2) |
483 | _GLIBCXX_NOEXCEPT |
484 | { _S_copy(d: __p, s: __k1, n: __k2 - __k1); } |
485 | |
486 | _GLIBCXX20_CONSTEXPR |
487 | static int |
488 | _S_compare(size_type __n1, size_type __n2) _GLIBCXX_NOEXCEPT |
489 | { |
490 | const difference_type __d = difference_type(__n1 - __n2); |
491 | |
492 | if (__d > __gnu_cxx::__numeric_traits<int>::__max) |
493 | return __gnu_cxx::__numeric_traits<int>::__max; |
494 | else if (__d < __gnu_cxx::__numeric_traits<int>::__min) |
495 | return __gnu_cxx::__numeric_traits<int>::__min; |
496 | else |
497 | return int(__d); |
498 | } |
499 | |
500 | _GLIBCXX20_CONSTEXPR |
501 | void |
502 | _M_assign(const basic_string&); |
503 | |
504 | _GLIBCXX20_CONSTEXPR |
505 | void |
506 | _M_mutate(size_type __pos, size_type __len1, const _CharT* __s, |
507 | size_type __len2); |
508 | |
509 | _GLIBCXX20_CONSTEXPR |
510 | void |
511 | _M_erase(size_type __pos, size_type __n); |
512 | |
513 | public: |
514 | // Construct/copy/destroy: |
515 | // NB: We overload ctors in some cases instead of using default |
516 | // arguments, per 17.4.4.4 para. 2 item 2. |
517 | |
518 | /** |
519 | * @brief Default constructor creates an empty string. |
520 | */ |
521 | _GLIBCXX20_CONSTEXPR |
522 | basic_string() |
523 | _GLIBCXX_NOEXCEPT_IF(is_nothrow_default_constructible<_Alloc>::value) |
524 | : _M_dataplus(_M_local_data()) |
525 | { |
526 | _M_init_local_buf(); |
527 | _M_set_length(n: 0); |
528 | } |
529 | |
530 | /** |
531 | * @brief Construct an empty string using allocator @a a. |
532 | */ |
533 | _GLIBCXX20_CONSTEXPR |
534 | explicit |
535 | basic_string(const _Alloc& __a) _GLIBCXX_NOEXCEPT |
536 | : _M_dataplus(_M_local_data(), __a) |
537 | { |
538 | _M_init_local_buf(); |
539 | _M_set_length(n: 0); |
540 | } |
541 | |
542 | /** |
543 | * @brief Construct string with copy of value of @a __str. |
544 | * @param __str Source string. |
545 | */ |
546 | _GLIBCXX20_CONSTEXPR |
547 | basic_string(const basic_string& __str) |
548 | : _M_dataplus(_M_local_data(), |
549 | _Alloc_traits::_S_select_on_copy(__str._M_get_allocator())) |
550 | { |
551 | _M_construct(__str._M_data(), __str._M_data() + __str.length(), |
552 | std::forward_iterator_tag()); |
553 | } |
554 | |
555 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
556 | // 2583. no way to supply an allocator for basic_string(str, pos) |
557 | /** |
558 | * @brief Construct string as copy of a substring. |
559 | * @param __str Source string. |
560 | * @param __pos Index of first character to copy from. |
561 | * @param __a Allocator to use. |
562 | */ |
563 | _GLIBCXX20_CONSTEXPR |
564 | basic_string(const basic_string& __str, size_type __pos, |
565 | const _Alloc& __a = _Alloc()) |
566 | : _M_dataplus(_M_local_data(), __a) |
567 | { |
568 | const _CharT* __start = __str._M_data() |
569 | + __str._M_check(__pos, "basic_string::basic_string" ); |
570 | _M_construct(__start, __start + __str._M_limit(__pos, npos), |
571 | std::forward_iterator_tag()); |
572 | } |
573 | |
574 | /** |
575 | * @brief Construct string as copy of a substring. |
576 | * @param __str Source string. |
577 | * @param __pos Index of first character to copy from. |
578 | * @param __n Number of characters to copy. |
579 | */ |
580 | _GLIBCXX20_CONSTEXPR |
581 | basic_string(const basic_string& __str, size_type __pos, |
582 | size_type __n) |
583 | : _M_dataplus(_M_local_data()) |
584 | { |
585 | const _CharT* __start = __str._M_data() |
586 | + __str._M_check(__pos, "basic_string::basic_string" ); |
587 | _M_construct(__start, __start + __str._M_limit(__pos, __n), |
588 | std::forward_iterator_tag()); |
589 | } |
590 | |
591 | /** |
592 | * @brief Construct string as copy of a substring. |
593 | * @param __str Source string. |
594 | * @param __pos Index of first character to copy from. |
595 | * @param __n Number of characters to copy. |
596 | * @param __a Allocator to use. |
597 | */ |
598 | _GLIBCXX20_CONSTEXPR |
599 | basic_string(const basic_string& __str, size_type __pos, |
600 | size_type __n, const _Alloc& __a) |
601 | : _M_dataplus(_M_local_data(), __a) |
602 | { |
603 | const _CharT* __start |
604 | = __str._M_data() + __str._M_check(__pos, "string::string" ); |
605 | _M_construct(__start, __start + __str._M_limit(__pos, __n), |
606 | std::forward_iterator_tag()); |
607 | } |
608 | |
609 | /** |
610 | * @brief Construct string initialized by a character %array. |
611 | * @param __s Source character %array. |
612 | * @param __n Number of characters to copy. |
613 | * @param __a Allocator to use (default is default allocator). |
614 | * |
615 | * NB: @a __s must have at least @a __n characters, '\\0' |
616 | * has no special meaning. |
617 | */ |
618 | _GLIBCXX20_CONSTEXPR |
619 | basic_string(const _CharT* __s, size_type __n, |
620 | const _Alloc& __a = _Alloc()) |
621 | : _M_dataplus(_M_local_data(), __a) |
622 | { |
623 | // NB: Not required, but considered best practice. |
624 | if (__s == 0 && __n > 0) |
625 | std::__throw_logic_error(__N("basic_string: " |
626 | "construction from null is not valid" )); |
627 | _M_construct(__s, __s + __n, std::forward_iterator_tag()); |
628 | } |
629 | |
630 | /** |
631 | * @brief Construct string as copy of a C string. |
632 | * @param __s Source C string. |
633 | * @param __a Allocator to use (default is default allocator). |
634 | */ |
635 | #if __cpp_deduction_guides && ! defined _GLIBCXX_DEFINING_STRING_INSTANTIATIONS |
636 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
637 | // 3076. basic_string CTAD ambiguity |
638 | template<typename = _RequireAllocator<_Alloc>> |
639 | #endif |
640 | _GLIBCXX20_CONSTEXPR |
641 | basic_string(const _CharT* __s, const _Alloc& __a = _Alloc()) |
642 | : _M_dataplus(_M_local_data(), __a) |
643 | { |
644 | // NB: Not required, but considered best practice. |
645 | if (__s == 0) |
646 | std::__throw_logic_error(__N("basic_string: " |
647 | "construction from null is not valid" )); |
648 | const _CharT* __end = __s + traits_type::length(__s); |
649 | _M_construct(__s, __end, forward_iterator_tag()); |
650 | } |
651 | |
652 | /** |
653 | * @brief Construct string as multiple characters. |
654 | * @param __n Number of characters. |
655 | * @param __c Character to use. |
656 | * @param __a Allocator to use (default is default allocator). |
657 | */ |
658 | #if __cpp_deduction_guides && ! defined _GLIBCXX_DEFINING_STRING_INSTANTIATIONS |
659 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
660 | // 3076. basic_string CTAD ambiguity |
661 | template<typename = _RequireAllocator<_Alloc>> |
662 | #endif |
663 | _GLIBCXX20_CONSTEXPR |
664 | basic_string(size_type __n, _CharT __c, const _Alloc& __a = _Alloc()) |
665 | : _M_dataplus(_M_local_data(), __a) |
666 | { _M_construct(__n, __c); } |
667 | |
668 | #if __cplusplus >= 201103L |
669 | /** |
670 | * @brief Move construct string. |
671 | * @param __str Source string. |
672 | * |
673 | * The newly-created string contains the exact contents of @a __str. |
674 | * @a __str is a valid, but unspecified string. |
675 | */ |
676 | _GLIBCXX20_CONSTEXPR |
677 | basic_string(basic_string&& __str) noexcept |
678 | : _M_dataplus(_M_local_data(), std::move(__str._M_get_allocator())) |
679 | { |
680 | if (__str._M_is_local()) |
681 | { |
682 | _M_init_local_buf(); |
683 | traits_type::copy(_M_local_buf, __str._M_local_buf, |
684 | __str.length() + 1); |
685 | } |
686 | else |
687 | { |
688 | _M_data(__str._M_data()); |
689 | _M_capacity(capacity: __str._M_allocated_capacity); |
690 | } |
691 | |
692 | // Must use _M_length() here not _M_set_length() because |
693 | // basic_stringbuf relies on writing into unallocated capacity so |
694 | // we mess up the contents if we put a '\0' in the string. |
695 | _M_length(length: __str.length()); |
696 | __str._M_data(__str._M_use_local_data()); |
697 | __str._M_set_length(0); |
698 | } |
699 | |
700 | /** |
701 | * @brief Construct string from an initializer %list. |
702 | * @param __l std::initializer_list of characters. |
703 | * @param __a Allocator to use (default is default allocator). |
704 | */ |
705 | _GLIBCXX20_CONSTEXPR |
706 | basic_string(initializer_list<_CharT> __l, const _Alloc& __a = _Alloc()) |
707 | : _M_dataplus(_M_local_data(), __a) |
708 | { _M_construct(__l.begin(), __l.end(), std::forward_iterator_tag()); } |
709 | |
710 | _GLIBCXX20_CONSTEXPR |
711 | basic_string(const basic_string& __str, const _Alloc& __a) |
712 | : _M_dataplus(_M_local_data(), __a) |
713 | { _M_construct(__str.begin(), __str.end(), std::forward_iterator_tag()); } |
714 | |
715 | _GLIBCXX20_CONSTEXPR |
716 | basic_string(basic_string&& __str, const _Alloc& __a) |
717 | noexcept(_Alloc_traits::_S_always_equal()) |
718 | : _M_dataplus(_M_local_data(), __a) |
719 | { |
720 | if (__str._M_is_local()) |
721 | { |
722 | _M_init_local_buf(); |
723 | traits_type::copy(_M_local_buf, __str._M_local_buf, |
724 | __str.length() + 1); |
725 | _M_length(length: __str.length()); |
726 | __str._M_set_length(0); |
727 | } |
728 | else if (_Alloc_traits::_S_always_equal() |
729 | || __str.get_allocator() == __a) |
730 | { |
731 | _M_data(__str._M_data()); |
732 | _M_length(length: __str.length()); |
733 | _M_capacity(capacity: __str._M_allocated_capacity); |
734 | __str._M_data(__str._M_use_local_data()); |
735 | __str._M_set_length(0); |
736 | } |
737 | else |
738 | _M_construct(__str.begin(), __str.end(), std::forward_iterator_tag()); |
739 | } |
740 | #endif // C++11 |
741 | |
742 | #if __cplusplus >= 202100L |
743 | basic_string(nullptr_t) = delete; |
744 | basic_string& operator=(nullptr_t) = delete; |
745 | #endif // C++23 |
746 | |
747 | /** |
748 | * @brief Construct string as copy of a range. |
749 | * @param __beg Start of range. |
750 | * @param __end End of range. |
751 | * @param __a Allocator to use (default is default allocator). |
752 | */ |
753 | #if __cplusplus >= 201103L |
754 | template<typename _InputIterator, |
755 | typename = std::_RequireInputIter<_InputIterator>> |
756 | #else |
757 | template<typename _InputIterator> |
758 | #endif |
759 | _GLIBCXX20_CONSTEXPR |
760 | basic_string(_InputIterator __beg, _InputIterator __end, |
761 | const _Alloc& __a = _Alloc()) |
762 | : _M_dataplus(_M_local_data(), __a), _M_string_length(0) |
763 | { |
764 | #if __cplusplus >= 201103L |
765 | _M_construct(__beg, __end, std::__iterator_category(__beg)); |
766 | #else |
767 | typedef typename std::__is_integer<_InputIterator>::__type _Integral; |
768 | _M_construct_aux(__beg, __end, _Integral()); |
769 | #endif |
770 | } |
771 | |
772 | #if __cplusplus >= 201703L |
773 | /** |
774 | * @brief Construct string from a substring of a string_view. |
775 | * @param __t Source object convertible to string view. |
776 | * @param __pos The index of the first character to copy from __t. |
777 | * @param __n The number of characters to copy from __t. |
778 | * @param __a Allocator to use. |
779 | */ |
780 | template<typename _Tp, |
781 | typename = enable_if_t<is_convertible_v<const _Tp&, __sv_type>>> |
782 | _GLIBCXX20_CONSTEXPR |
783 | basic_string(const _Tp& __t, size_type __pos, size_type __n, |
784 | const _Alloc& __a = _Alloc()) |
785 | : basic_string(_S_to_string_view(svt: __t).substr(__pos, __n), __a) { } |
786 | |
787 | /** |
788 | * @brief Construct string from a string_view. |
789 | * @param __t Source object convertible to string view. |
790 | * @param __a Allocator to use (default is default allocator). |
791 | */ |
792 | template<typename _Tp, typename = _If_sv<_Tp, void>> |
793 | _GLIBCXX20_CONSTEXPR |
794 | explicit |
795 | basic_string(const _Tp& __t, const _Alloc& __a = _Alloc()) |
796 | : basic_string(__sv_wrapper(_S_to_string_view(svt: __t)), __a) { } |
797 | #endif // C++17 |
798 | |
799 | /** |
800 | * @brief Destroy the string instance. |
801 | */ |
802 | _GLIBCXX20_CONSTEXPR |
803 | ~basic_string() |
804 | { _M_dispose(); } |
805 | |
806 | /** |
807 | * @brief Assign the value of @a str to this string. |
808 | * @param __str Source string. |
809 | */ |
810 | _GLIBCXX20_CONSTEXPR |
811 | basic_string& |
812 | operator=(const basic_string& __str) |
813 | { |
814 | return this->assign(__str); |
815 | } |
816 | |
817 | /** |
818 | * @brief Copy contents of @a s into this string. |
819 | * @param __s Source null-terminated string. |
820 | */ |
821 | _GLIBCXX20_CONSTEXPR |
822 | basic_string& |
823 | operator=(const _CharT* __s) |
824 | { return this->assign(__s); } |
825 | |
826 | /** |
827 | * @brief Set value to string of length 1. |
828 | * @param __c Source character. |
829 | * |
830 | * Assigning to a character makes this string length 1 and |
831 | * (*this)[0] == @a c. |
832 | */ |
833 | _GLIBCXX20_CONSTEXPR |
834 | basic_string& |
835 | operator=(_CharT __c) |
836 | { |
837 | this->assign(1, __c); |
838 | return *this; |
839 | } |
840 | |
841 | #if __cplusplus >= 201103L |
842 | /** |
843 | * @brief Move assign the value of @a str to this string. |
844 | * @param __str Source string. |
845 | * |
846 | * The contents of @a str are moved into this string (without copying). |
847 | * @a str is a valid, but unspecified string. |
848 | */ |
849 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
850 | // 2063. Contradictory requirements for string move assignment |
851 | _GLIBCXX20_CONSTEXPR |
852 | basic_string& |
853 | operator=(basic_string&& __str) |
854 | noexcept(_Alloc_traits::_S_nothrow_move()) |
855 | { |
856 | const bool __equal_allocs = _Alloc_traits::_S_always_equal() |
857 | || _M_get_allocator() == __str._M_get_allocator(); |
858 | if (!_M_is_local() && _Alloc_traits::_S_propagate_on_move_assign() |
859 | && !__equal_allocs) |
860 | { |
861 | // Destroy existing storage before replacing allocator. |
862 | _M_destroy(size: _M_allocated_capacity); |
863 | _M_data(_M_local_data()); |
864 | _M_set_length(n: 0); |
865 | } |
866 | // Replace allocator if POCMA is true. |
867 | std::__alloc_on_move(_M_get_allocator(), __str._M_get_allocator()); |
868 | |
869 | if (__str._M_is_local()) |
870 | { |
871 | // We've always got room for a short string, just copy it |
872 | // (unless this is a self-move, because that would violate the |
873 | // char_traits::copy precondition that the ranges don't overlap). |
874 | if (__builtin_expect(std::__addressof(__str) != this, true)) |
875 | { |
876 | if (__str.size()) |
877 | this->_S_copy(_M_data(), __str._M_data(), __str.size()); |
878 | _M_set_length(n: __str.size()); |
879 | } |
880 | } |
881 | else if (_Alloc_traits::_S_propagate_on_move_assign() || __equal_allocs) |
882 | { |
883 | // Just move the allocated pointer, our allocator can free it. |
884 | pointer __data = nullptr; |
885 | size_type __capacity; |
886 | if (!_M_is_local()) |
887 | { |
888 | if (__equal_allocs) |
889 | { |
890 | // __str can reuse our existing storage. |
891 | __data = _M_data(); |
892 | __capacity = _M_allocated_capacity; |
893 | } |
894 | else // __str can't use it, so free it. |
895 | _M_destroy(size: _M_allocated_capacity); |
896 | } |
897 | |
898 | _M_data(__str._M_data()); |
899 | _M_length(length: __str.length()); |
900 | _M_capacity(capacity: __str._M_allocated_capacity); |
901 | if (__data) |
902 | { |
903 | __str._M_data(__data); |
904 | __str._M_capacity(__capacity); |
905 | } |
906 | else |
907 | __str._M_data(__str._M_use_local_data()); |
908 | } |
909 | else // Need to do a deep copy |
910 | assign(__str); |
911 | __str.clear(); |
912 | return *this; |
913 | } |
914 | |
915 | /** |
916 | * @brief Set value to string constructed from initializer %list. |
917 | * @param __l std::initializer_list. |
918 | */ |
919 | _GLIBCXX20_CONSTEXPR |
920 | basic_string& |
921 | operator=(initializer_list<_CharT> __l) |
922 | { |
923 | this->assign(__l.begin(), __l.size()); |
924 | return *this; |
925 | } |
926 | #endif // C++11 |
927 | |
928 | #if __cplusplus >= 201703L |
929 | /** |
930 | * @brief Set value to string constructed from a string_view. |
931 | * @param __svt An object convertible to string_view. |
932 | */ |
933 | template<typename _Tp> |
934 | _GLIBCXX20_CONSTEXPR |
935 | _If_sv<_Tp, basic_string&> |
936 | operator=(const _Tp& __svt) |
937 | { return this->assign(__svt); } |
938 | |
939 | /** |
940 | * @brief Convert to a string_view. |
941 | * @return A string_view. |
942 | */ |
943 | _GLIBCXX20_CONSTEXPR |
944 | operator __sv_type() const noexcept |
945 | { return __sv_type(data(), size()); } |
946 | #endif // C++17 |
947 | |
948 | // Iterators: |
949 | /** |
950 | * Returns a read/write iterator that points to the first character in |
951 | * the %string. |
952 | */ |
953 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
954 | iterator |
955 | begin() _GLIBCXX_NOEXCEPT |
956 | { return iterator(_M_data()); } |
957 | |
958 | /** |
959 | * Returns a read-only (constant) iterator that points to the first |
960 | * character in the %string. |
961 | */ |
962 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
963 | const_iterator |
964 | begin() const _GLIBCXX_NOEXCEPT |
965 | { return const_iterator(_M_data()); } |
966 | |
967 | /** |
968 | * Returns a read/write iterator that points one past the last |
969 | * character in the %string. |
970 | */ |
971 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
972 | iterator |
973 | end() _GLIBCXX_NOEXCEPT |
974 | { return iterator(_M_data() + this->size()); } |
975 | |
976 | /** |
977 | * Returns a read-only (constant) iterator that points one past the |
978 | * last character in the %string. |
979 | */ |
980 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
981 | const_iterator |
982 | end() const _GLIBCXX_NOEXCEPT |
983 | { return const_iterator(_M_data() + this->size()); } |
984 | |
985 | /** |
986 | * Returns a read/write reverse iterator that points to the last |
987 | * character in the %string. Iteration is done in reverse element |
988 | * order. |
989 | */ |
990 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
991 | reverse_iterator |
992 | rbegin() _GLIBCXX_NOEXCEPT |
993 | { return reverse_iterator(this->end()); } |
994 | |
995 | /** |
996 | * Returns a read-only (constant) reverse iterator that points |
997 | * to the last character in the %string. Iteration is done in |
998 | * reverse element order. |
999 | */ |
1000 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
1001 | const_reverse_iterator |
1002 | rbegin() const _GLIBCXX_NOEXCEPT |
1003 | { return const_reverse_iterator(this->end()); } |
1004 | |
1005 | /** |
1006 | * Returns a read/write reverse iterator that points to one before the |
1007 | * first character in the %string. Iteration is done in reverse |
1008 | * element order. |
1009 | */ |
1010 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
1011 | reverse_iterator |
1012 | rend() _GLIBCXX_NOEXCEPT |
1013 | { return reverse_iterator(this->begin()); } |
1014 | |
1015 | /** |
1016 | * Returns a read-only (constant) reverse iterator that points |
1017 | * to one before the first character in the %string. Iteration |
1018 | * is done in reverse element order. |
1019 | */ |
1020 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
1021 | const_reverse_iterator |
1022 | rend() const _GLIBCXX_NOEXCEPT |
1023 | { return const_reverse_iterator(this->begin()); } |
1024 | |
1025 | #if __cplusplus >= 201103L |
1026 | /** |
1027 | * Returns a read-only (constant) iterator that points to the first |
1028 | * character in the %string. |
1029 | */ |
1030 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
1031 | const_iterator |
1032 | cbegin() const noexcept |
1033 | { return const_iterator(this->_M_data()); } |
1034 | |
1035 | /** |
1036 | * Returns a read-only (constant) iterator that points one past the |
1037 | * last character in the %string. |
1038 | */ |
1039 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
1040 | const_iterator |
1041 | cend() const noexcept |
1042 | { return const_iterator(this->_M_data() + this->size()); } |
1043 | |
1044 | /** |
1045 | * Returns a read-only (constant) reverse iterator that points |
1046 | * to the last character in the %string. Iteration is done in |
1047 | * reverse element order. |
1048 | */ |
1049 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
1050 | const_reverse_iterator |
1051 | crbegin() const noexcept |
1052 | { return const_reverse_iterator(this->end()); } |
1053 | |
1054 | /** |
1055 | * Returns a read-only (constant) reverse iterator that points |
1056 | * to one before the first character in the %string. Iteration |
1057 | * is done in reverse element order. |
1058 | */ |
1059 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
1060 | const_reverse_iterator |
1061 | crend() const noexcept |
1062 | { return const_reverse_iterator(this->begin()); } |
1063 | #endif |
1064 | |
1065 | public: |
1066 | // Capacity: |
1067 | /// Returns the number of characters in the string, not including any |
1068 | /// null-termination. |
1069 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
1070 | size_type |
1071 | size() const _GLIBCXX_NOEXCEPT |
1072 | { return _M_string_length; } |
1073 | |
1074 | /// Returns the number of characters in the string, not including any |
1075 | /// null-termination. |
1076 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
1077 | size_type |
1078 | length() const _GLIBCXX_NOEXCEPT |
1079 | { return _M_string_length; } |
1080 | |
1081 | /// Returns the size() of the largest possible %string. |
1082 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
1083 | size_type |
1084 | max_size() const _GLIBCXX_NOEXCEPT |
1085 | { return (_Alloc_traits::max_size(_M_get_allocator()) - 1) / 2; } |
1086 | |
1087 | /** |
1088 | * @brief Resizes the %string to the specified number of characters. |
1089 | * @param __n Number of characters the %string should contain. |
1090 | * @param __c Character to fill any new elements. |
1091 | * |
1092 | * This function will %resize the %string to the specified |
1093 | * number of characters. If the number is smaller than the |
1094 | * %string's current size the %string is truncated, otherwise |
1095 | * the %string is extended and new elements are %set to @a __c. |
1096 | */ |
1097 | _GLIBCXX20_CONSTEXPR |
1098 | void |
1099 | resize(size_type __n, _CharT __c); |
1100 | |
1101 | /** |
1102 | * @brief Resizes the %string to the specified number of characters. |
1103 | * @param __n Number of characters the %string should contain. |
1104 | * |
1105 | * This function will resize the %string to the specified length. If |
1106 | * the new size is smaller than the %string's current size the %string |
1107 | * is truncated, otherwise the %string is extended and new characters |
1108 | * are default-constructed. For basic types such as char, this means |
1109 | * setting them to 0. |
1110 | */ |
1111 | _GLIBCXX20_CONSTEXPR |
1112 | void |
1113 | resize(size_type __n) |
1114 | { this->resize(__n, _CharT()); } |
1115 | |
1116 | #if __cplusplus >= 201103L |
1117 | #pragma GCC diagnostic push |
1118 | #pragma GCC diagnostic ignored "-Wdeprecated-declarations" |
1119 | /// A non-binding request to reduce capacity() to size(). |
1120 | _GLIBCXX20_CONSTEXPR |
1121 | void |
1122 | shrink_to_fit() noexcept |
1123 | { reserve(); } |
1124 | #pragma GCC diagnostic pop |
1125 | #endif |
1126 | |
1127 | #if __cplusplus > 202002L |
1128 | #define __cpp_lib_string_resize_and_overwrite 202110L |
1129 | /** Resize the string and call a function to fill it. |
1130 | * |
1131 | * @param __n The maximum size requested. |
1132 | * @param __op A callable object that writes characters to the string. |
1133 | * |
1134 | * This is a low-level function that is easy to misuse, be careful. |
1135 | * |
1136 | * Calling `str.resize_and_overwrite(n, op)` will reserve at least `n` |
1137 | * characters in `str`, evaluate `n2 = std::move(op)(str.data(), n)`, |
1138 | * and finally set the string length to `n2` (adding a null terminator |
1139 | * at the end). The function object `op` is allowed to write to the |
1140 | * extra capacity added by the initial reserve operation, which is not |
1141 | * allowed if you just call `str.reserve(n)` yourself. |
1142 | * |
1143 | * This can be used to efficiently fill a `string` buffer without the |
1144 | * overhead of zero-initializing characters that will be overwritten |
1145 | * anyway. |
1146 | * |
1147 | * The callable `op` must not access the string directly (only through |
1148 | * the pointer passed as its first argument), must not write more than |
1149 | * `n` characters to the string, must return a value no greater than `n`, |
1150 | * and must ensure that all characters up to the returned length are |
1151 | * valid after it returns (i.e. there must be no uninitialized values |
1152 | * left in the string after the call, because accessing them would |
1153 | * have undefined behaviour). If `op` exits by throwing an exception |
1154 | * the behaviour is undefined. |
1155 | * |
1156 | * @since C++23 |
1157 | */ |
1158 | template<typename _Operation> |
1159 | constexpr void |
1160 | resize_and_overwrite(size_type __n, _Operation __op); |
1161 | #endif |
1162 | |
1163 | /** |
1164 | * Returns the total number of characters that the %string can hold |
1165 | * before needing to allocate more memory. |
1166 | */ |
1167 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
1168 | size_type |
1169 | capacity() const _GLIBCXX_NOEXCEPT |
1170 | { |
1171 | return _M_is_local() ? size_type(_S_local_capacity) |
1172 | : _M_allocated_capacity; |
1173 | } |
1174 | |
1175 | /** |
1176 | * @brief Attempt to preallocate enough memory for specified number of |
1177 | * characters. |
1178 | * @param __res_arg Number of characters required. |
1179 | * @throw std::length_error If @a __res_arg exceeds @c max_size(). |
1180 | * |
1181 | * This function attempts to reserve enough memory for the |
1182 | * %string to hold the specified number of characters. If the |
1183 | * number requested is more than max_size(), length_error is |
1184 | * thrown. |
1185 | * |
1186 | * The advantage of this function is that if optimal code is a |
1187 | * necessity and the user can determine the string length that will be |
1188 | * required, the user can reserve the memory in %advance, and thus |
1189 | * prevent a possible reallocation of memory and copying of %string |
1190 | * data. |
1191 | */ |
1192 | _GLIBCXX20_CONSTEXPR |
1193 | void |
1194 | reserve(size_type __res_arg); |
1195 | |
1196 | /** |
1197 | * Equivalent to shrink_to_fit(). |
1198 | */ |
1199 | #if __cplusplus > 201703L |
1200 | [[deprecated("use shrink_to_fit() instead" )]] |
1201 | #endif |
1202 | _GLIBCXX20_CONSTEXPR |
1203 | void |
1204 | reserve(); |
1205 | |
1206 | /** |
1207 | * Erases the string, making it empty. |
1208 | */ |
1209 | _GLIBCXX20_CONSTEXPR |
1210 | void |
1211 | clear() _GLIBCXX_NOEXCEPT |
1212 | { _M_set_length(n: 0); } |
1213 | |
1214 | /** |
1215 | * Returns true if the %string is empty. Equivalent to |
1216 | * <code>*this == ""</code>. |
1217 | */ |
1218 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
1219 | bool |
1220 | empty() const _GLIBCXX_NOEXCEPT |
1221 | { return this->size() == 0; } |
1222 | |
1223 | // Element access: |
1224 | /** |
1225 | * @brief Subscript access to the data contained in the %string. |
1226 | * @param __pos The index of the character to access. |
1227 | * @return Read-only (constant) reference to the character. |
1228 | * |
1229 | * This operator allows for easy, array-style, data access. |
1230 | * Note that data access with this operator is unchecked and |
1231 | * out_of_range lookups are not defined. (For checked lookups |
1232 | * see at().) |
1233 | */ |
1234 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
1235 | const_reference |
1236 | operator[] (size_type __pos) const _GLIBCXX_NOEXCEPT |
1237 | { |
1238 | __glibcxx_assert(__pos <= size()); |
1239 | return _M_data()[__pos]; |
1240 | } |
1241 | |
1242 | /** |
1243 | * @brief Subscript access to the data contained in the %string. |
1244 | * @param __pos The index of the character to access. |
1245 | * @return Read/write reference to the character. |
1246 | * |
1247 | * This operator allows for easy, array-style, data access. |
1248 | * Note that data access with this operator is unchecked and |
1249 | * out_of_range lookups are not defined. (For checked lookups |
1250 | * see at().) |
1251 | */ |
1252 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
1253 | reference |
1254 | operator[](size_type __pos) |
1255 | { |
1256 | // Allow pos == size() both in C++98 mode, as v3 extension, |
1257 | // and in C++11 mode. |
1258 | __glibcxx_assert(__pos <= size()); |
1259 | // In pedantic mode be strict in C++98 mode. |
1260 | _GLIBCXX_DEBUG_PEDASSERT(__cplusplus >= 201103L || __pos < size()); |
1261 | return _M_data()[__pos]; |
1262 | } |
1263 | |
1264 | /** |
1265 | * @brief Provides access to the data contained in the %string. |
1266 | * @param __n The index of the character to access. |
1267 | * @return Read-only (const) reference to the character. |
1268 | * @throw std::out_of_range If @a n is an invalid index. |
1269 | * |
1270 | * This function provides for safer data access. The parameter is |
1271 | * first checked that it is in the range of the string. The function |
1272 | * throws out_of_range if the check fails. |
1273 | */ |
1274 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
1275 | const_reference |
1276 | at(size_type __n) const |
1277 | { |
1278 | if (__n >= this->size()) |
1279 | __throw_out_of_range_fmt(__N("basic_string::at: __n " |
1280 | "(which is %zu) >= this->size() " |
1281 | "(which is %zu)" ), |
1282 | __n, this->size()); |
1283 | return _M_data()[__n]; |
1284 | } |
1285 | |
1286 | /** |
1287 | * @brief Provides access to the data contained in the %string. |
1288 | * @param __n The index of the character to access. |
1289 | * @return Read/write reference to the character. |
1290 | * @throw std::out_of_range If @a n is an invalid index. |
1291 | * |
1292 | * This function provides for safer data access. The parameter is |
1293 | * first checked that it is in the range of the string. The function |
1294 | * throws out_of_range if the check fails. |
1295 | */ |
1296 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
1297 | reference |
1298 | at(size_type __n) |
1299 | { |
1300 | if (__n >= size()) |
1301 | __throw_out_of_range_fmt(__N("basic_string::at: __n " |
1302 | "(which is %zu) >= this->size() " |
1303 | "(which is %zu)" ), |
1304 | __n, this->size()); |
1305 | return _M_data()[__n]; |
1306 | } |
1307 | |
1308 | #if __cplusplus >= 201103L |
1309 | /** |
1310 | * Returns a read/write reference to the data at the first |
1311 | * element of the %string. |
1312 | */ |
1313 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
1314 | reference |
1315 | front() noexcept |
1316 | { |
1317 | __glibcxx_assert(!empty()); |
1318 | return operator[](0); |
1319 | } |
1320 | |
1321 | /** |
1322 | * Returns a read-only (constant) reference to the data at the first |
1323 | * element of the %string. |
1324 | */ |
1325 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
1326 | const_reference |
1327 | front() const noexcept |
1328 | { |
1329 | __glibcxx_assert(!empty()); |
1330 | return operator[](0); |
1331 | } |
1332 | |
1333 | /** |
1334 | * Returns a read/write reference to the data at the last |
1335 | * element of the %string. |
1336 | */ |
1337 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
1338 | reference |
1339 | back() noexcept |
1340 | { |
1341 | __glibcxx_assert(!empty()); |
1342 | return operator[](this->size() - 1); |
1343 | } |
1344 | |
1345 | /** |
1346 | * Returns a read-only (constant) reference to the data at the |
1347 | * last element of the %string. |
1348 | */ |
1349 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
1350 | const_reference |
1351 | back() const noexcept |
1352 | { |
1353 | __glibcxx_assert(!empty()); |
1354 | return operator[](this->size() - 1); |
1355 | } |
1356 | #endif |
1357 | |
1358 | // Modifiers: |
1359 | /** |
1360 | * @brief Append a string to this string. |
1361 | * @param __str The string to append. |
1362 | * @return Reference to this string. |
1363 | */ |
1364 | _GLIBCXX20_CONSTEXPR |
1365 | basic_string& |
1366 | operator+=(const basic_string& __str) |
1367 | { return this->append(__str); } |
1368 | |
1369 | /** |
1370 | * @brief Append a C string. |
1371 | * @param __s The C string to append. |
1372 | * @return Reference to this string. |
1373 | */ |
1374 | _GLIBCXX20_CONSTEXPR |
1375 | basic_string& |
1376 | operator+=(const _CharT* __s) |
1377 | { return this->append(__s); } |
1378 | |
1379 | /** |
1380 | * @brief Append a character. |
1381 | * @param __c The character to append. |
1382 | * @return Reference to this string. |
1383 | */ |
1384 | _GLIBCXX20_CONSTEXPR |
1385 | basic_string& |
1386 | operator+=(_CharT __c) |
1387 | { |
1388 | this->push_back(__c); |
1389 | return *this; |
1390 | } |
1391 | |
1392 | #if __cplusplus >= 201103L |
1393 | /** |
1394 | * @brief Append an initializer_list of characters. |
1395 | * @param __l The initializer_list of characters to be appended. |
1396 | * @return Reference to this string. |
1397 | */ |
1398 | _GLIBCXX20_CONSTEXPR |
1399 | basic_string& |
1400 | operator+=(initializer_list<_CharT> __l) |
1401 | { return this->append(__l.begin(), __l.size()); } |
1402 | #endif // C++11 |
1403 | |
1404 | #if __cplusplus >= 201703L |
1405 | /** |
1406 | * @brief Append a string_view. |
1407 | * @param __svt An object convertible to string_view to be appended. |
1408 | * @return Reference to this string. |
1409 | */ |
1410 | template<typename _Tp> |
1411 | _GLIBCXX20_CONSTEXPR |
1412 | _If_sv<_Tp, basic_string&> |
1413 | operator+=(const _Tp& __svt) |
1414 | { return this->append(__svt); } |
1415 | #endif // C++17 |
1416 | |
1417 | /** |
1418 | * @brief Append a string to this string. |
1419 | * @param __str The string to append. |
1420 | * @return Reference to this string. |
1421 | */ |
1422 | _GLIBCXX20_CONSTEXPR |
1423 | basic_string& |
1424 | append(const basic_string& __str) |
1425 | { return this->append(__str._M_data(), __str.size()); } |
1426 | |
1427 | /** |
1428 | * @brief Append a substring. |
1429 | * @param __str The string to append. |
1430 | * @param __pos Index of the first character of str to append. |
1431 | * @param __n The number of characters to append. |
1432 | * @return Reference to this string. |
1433 | * @throw std::out_of_range if @a __pos is not a valid index. |
1434 | * |
1435 | * This function appends @a __n characters from @a __str |
1436 | * starting at @a __pos to this string. If @a __n is is larger |
1437 | * than the number of available characters in @a __str, the |
1438 | * remainder of @a __str is appended. |
1439 | */ |
1440 | _GLIBCXX20_CONSTEXPR |
1441 | basic_string& |
1442 | append(const basic_string& __str, size_type __pos, size_type __n = npos) |
1443 | { return this->append(__str._M_data() |
1444 | + __str._M_check(__pos, "basic_string::append" ), |
1445 | __str._M_limit(__pos, __n)); } |
1446 | |
1447 | /** |
1448 | * @brief Append a C substring. |
1449 | * @param __s The C string to append. |
1450 | * @param __n The number of characters to append. |
1451 | * @return Reference to this string. |
1452 | */ |
1453 | _GLIBCXX20_CONSTEXPR |
1454 | basic_string& |
1455 | append(const _CharT* __s, size_type __n) |
1456 | { |
1457 | __glibcxx_requires_string_len(__s, __n); |
1458 | _M_check_length(n1: size_type(0), n2: __n, s: "basic_string::append" ); |
1459 | return _M_append(__s, __n); |
1460 | } |
1461 | |
1462 | /** |
1463 | * @brief Append a C string. |
1464 | * @param __s The C string to append. |
1465 | * @return Reference to this string. |
1466 | */ |
1467 | _GLIBCXX20_CONSTEXPR |
1468 | basic_string& |
1469 | append(const _CharT* __s) |
1470 | { |
1471 | __glibcxx_requires_string(__s); |
1472 | const size_type __n = traits_type::length(__s); |
1473 | _M_check_length(n1: size_type(0), n2: __n, s: "basic_string::append" ); |
1474 | return _M_append(__s, __n); |
1475 | } |
1476 | |
1477 | /** |
1478 | * @brief Append multiple characters. |
1479 | * @param __n The number of characters to append. |
1480 | * @param __c The character to use. |
1481 | * @return Reference to this string. |
1482 | * |
1483 | * Appends __n copies of __c to this string. |
1484 | */ |
1485 | _GLIBCXX20_CONSTEXPR |
1486 | basic_string& |
1487 | append(size_type __n, _CharT __c) |
1488 | { return _M_replace_aux(pos1: this->size(), n1: size_type(0), n2: __n, __c); } |
1489 | |
1490 | #if __cplusplus >= 201103L |
1491 | /** |
1492 | * @brief Append an initializer_list of characters. |
1493 | * @param __l The initializer_list of characters to append. |
1494 | * @return Reference to this string. |
1495 | */ |
1496 | _GLIBCXX20_CONSTEXPR |
1497 | basic_string& |
1498 | append(initializer_list<_CharT> __l) |
1499 | { return this->append(__l.begin(), __l.size()); } |
1500 | #endif // C++11 |
1501 | |
1502 | /** |
1503 | * @brief Append a range of characters. |
1504 | * @param __first Iterator referencing the first character to append. |
1505 | * @param __last Iterator marking the end of the range. |
1506 | * @return Reference to this string. |
1507 | * |
1508 | * Appends characters in the range [__first,__last) to this string. |
1509 | */ |
1510 | #if __cplusplus >= 201103L |
1511 | template<class _InputIterator, |
1512 | typename = std::_RequireInputIter<_InputIterator>> |
1513 | _GLIBCXX20_CONSTEXPR |
1514 | #else |
1515 | template<class _InputIterator> |
1516 | #endif |
1517 | basic_string& |
1518 | append(_InputIterator __first, _InputIterator __last) |
1519 | { return this->replace(end(), end(), __first, __last); } |
1520 | |
1521 | #if __cplusplus >= 201703L |
1522 | /** |
1523 | * @brief Append a string_view. |
1524 | * @param __svt An object convertible to string_view to be appended. |
1525 | * @return Reference to this string. |
1526 | */ |
1527 | template<typename _Tp> |
1528 | _GLIBCXX20_CONSTEXPR |
1529 | _If_sv<_Tp, basic_string&> |
1530 | append(const _Tp& __svt) |
1531 | { |
1532 | __sv_type __sv = __svt; |
1533 | return this->append(__sv.data(), __sv.size()); |
1534 | } |
1535 | |
1536 | /** |
1537 | * @brief Append a range of characters from a string_view. |
1538 | * @param __svt An object convertible to string_view to be appended from. |
1539 | * @param __pos The position in the string_view to append from. |
1540 | * @param __n The number of characters to append from the string_view. |
1541 | * @return Reference to this string. |
1542 | */ |
1543 | template<typename _Tp> |
1544 | _GLIBCXX20_CONSTEXPR |
1545 | _If_sv<_Tp, basic_string&> |
1546 | append(const _Tp& __svt, size_type __pos, size_type __n = npos) |
1547 | { |
1548 | __sv_type __sv = __svt; |
1549 | return _M_append(s: __sv.data() |
1550 | + std::__sv_check(size: __sv.size(), __pos, s: "basic_string::append" ), |
1551 | n: std::__sv_limit(size: __sv.size(), __pos, off: __n)); |
1552 | } |
1553 | #endif // C++17 |
1554 | |
1555 | /** |
1556 | * @brief Append a single character. |
1557 | * @param __c Character to append. |
1558 | */ |
1559 | _GLIBCXX20_CONSTEXPR |
1560 | void |
1561 | push_back(_CharT __c) |
1562 | { |
1563 | const size_type __size = this->size(); |
1564 | if (__size + 1 > this->capacity()) |
1565 | this->_M_mutate(__size, size_type(0), 0, size_type(1)); |
1566 | traits_type::assign(this->_M_data()[__size], __c); |
1567 | this->_M_set_length(__size + 1); |
1568 | } |
1569 | |
1570 | /** |
1571 | * @brief Set value to contents of another string. |
1572 | * @param __str Source string to use. |
1573 | * @return Reference to this string. |
1574 | */ |
1575 | _GLIBCXX20_CONSTEXPR |
1576 | basic_string& |
1577 | assign(const basic_string& __str) |
1578 | { |
1579 | #if __cplusplus >= 201103L |
1580 | if (_Alloc_traits::_S_propagate_on_copy_assign()) |
1581 | { |
1582 | if (!_Alloc_traits::_S_always_equal() && !_M_is_local() |
1583 | && _M_get_allocator() != __str._M_get_allocator()) |
1584 | { |
1585 | // Propagating allocator cannot free existing storage so must |
1586 | // deallocate it before replacing current allocator. |
1587 | if (__str.size() <= _S_local_capacity) |
1588 | { |
1589 | _M_destroy(size: _M_allocated_capacity); |
1590 | _M_data(_M_use_local_data()); |
1591 | _M_set_length(n: 0); |
1592 | } |
1593 | else |
1594 | { |
1595 | const auto __len = __str.size(); |
1596 | auto __alloc = __str._M_get_allocator(); |
1597 | // If this allocation throws there are no effects: |
1598 | auto __ptr = _S_allocate(a&: __alloc, n: __len + 1); |
1599 | _M_destroy(size: _M_allocated_capacity); |
1600 | _M_data(__ptr); |
1601 | _M_capacity(capacity: __len); |
1602 | _M_set_length(n: __len); |
1603 | } |
1604 | } |
1605 | std::__alloc_on_copy(_M_get_allocator(), __str._M_get_allocator()); |
1606 | } |
1607 | #endif |
1608 | this->_M_assign(__str); |
1609 | return *this; |
1610 | } |
1611 | |
1612 | #if __cplusplus >= 201103L |
1613 | /** |
1614 | * @brief Set value to contents of another string. |
1615 | * @param __str Source string to use. |
1616 | * @return Reference to this string. |
1617 | * |
1618 | * This function sets this string to the exact contents of @a __str. |
1619 | * @a __str is a valid, but unspecified string. |
1620 | */ |
1621 | _GLIBCXX20_CONSTEXPR |
1622 | basic_string& |
1623 | assign(basic_string&& __str) |
1624 | noexcept(_Alloc_traits::_S_nothrow_move()) |
1625 | { |
1626 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
1627 | // 2063. Contradictory requirements for string move assignment |
1628 | return *this = std::move(__str); |
1629 | } |
1630 | #endif // C++11 |
1631 | |
1632 | /** |
1633 | * @brief Set value to a substring of a string. |
1634 | * @param __str The string to use. |
1635 | * @param __pos Index of the first character of str. |
1636 | * @param __n Number of characters to use. |
1637 | * @return Reference to this string. |
1638 | * @throw std::out_of_range if @a pos is not a valid index. |
1639 | * |
1640 | * This function sets this string to the substring of @a __str |
1641 | * consisting of @a __n characters at @a __pos. If @a __n is |
1642 | * is larger than the number of available characters in @a |
1643 | * __str, the remainder of @a __str is used. |
1644 | */ |
1645 | _GLIBCXX20_CONSTEXPR |
1646 | basic_string& |
1647 | assign(const basic_string& __str, size_type __pos, size_type __n = npos) |
1648 | { return _M_replace(pos: size_type(0), len1: this->size(), s: __str._M_data() |
1649 | + __str._M_check(__pos, "basic_string::assign" ), |
1650 | len2: __str._M_limit(__pos, __n)); } |
1651 | |
1652 | /** |
1653 | * @brief Set value to a C substring. |
1654 | * @param __s The C string to use. |
1655 | * @param __n Number of characters to use. |
1656 | * @return Reference to this string. |
1657 | * |
1658 | * This function sets the value of this string to the first @a __n |
1659 | * characters of @a __s. If @a __n is is larger than the number of |
1660 | * available characters in @a __s, the remainder of @a __s is used. |
1661 | */ |
1662 | _GLIBCXX20_CONSTEXPR |
1663 | basic_string& |
1664 | assign(const _CharT* __s, size_type __n) |
1665 | { |
1666 | __glibcxx_requires_string_len(__s, __n); |
1667 | return _M_replace(pos: size_type(0), len1: this->size(), __s, len2: __n); |
1668 | } |
1669 | |
1670 | /** |
1671 | * @brief Set value to contents of a C string. |
1672 | * @param __s The C string to use. |
1673 | * @return Reference to this string. |
1674 | * |
1675 | * This function sets the value of this string to the value of @a __s. |
1676 | * The data is copied, so there is no dependence on @a __s once the |
1677 | * function returns. |
1678 | */ |
1679 | _GLIBCXX20_CONSTEXPR |
1680 | basic_string& |
1681 | assign(const _CharT* __s) |
1682 | { |
1683 | __glibcxx_requires_string(__s); |
1684 | return _M_replace(pos: size_type(0), len1: this->size(), __s, |
1685 | len2: traits_type::length(__s)); |
1686 | } |
1687 | |
1688 | /** |
1689 | * @brief Set value to multiple characters. |
1690 | * @param __n Length of the resulting string. |
1691 | * @param __c The character to use. |
1692 | * @return Reference to this string. |
1693 | * |
1694 | * This function sets the value of this string to @a __n copies of |
1695 | * character @a __c. |
1696 | */ |
1697 | _GLIBCXX20_CONSTEXPR |
1698 | basic_string& |
1699 | assign(size_type __n, _CharT __c) |
1700 | { return _M_replace_aux(pos1: size_type(0), n1: this->size(), n2: __n, __c); } |
1701 | |
1702 | /** |
1703 | * @brief Set value to a range of characters. |
1704 | * @param __first Iterator referencing the first character to append. |
1705 | * @param __last Iterator marking the end of the range. |
1706 | * @return Reference to this string. |
1707 | * |
1708 | * Sets value of string to characters in the range [__first,__last). |
1709 | */ |
1710 | #if __cplusplus >= 201103L |
1711 | template<class _InputIterator, |
1712 | typename = std::_RequireInputIter<_InputIterator>> |
1713 | _GLIBCXX20_CONSTEXPR |
1714 | #else |
1715 | template<class _InputIterator> |
1716 | #endif |
1717 | basic_string& |
1718 | assign(_InputIterator __first, _InputIterator __last) |
1719 | { return this->replace(begin(), end(), __first, __last); } |
1720 | |
1721 | #if __cplusplus >= 201103L |
1722 | /** |
1723 | * @brief Set value to an initializer_list of characters. |
1724 | * @param __l The initializer_list of characters to assign. |
1725 | * @return Reference to this string. |
1726 | */ |
1727 | _GLIBCXX20_CONSTEXPR |
1728 | basic_string& |
1729 | assign(initializer_list<_CharT> __l) |
1730 | { return this->assign(__l.begin(), __l.size()); } |
1731 | #endif // C++11 |
1732 | |
1733 | #if __cplusplus >= 201703L |
1734 | /** |
1735 | * @brief Set value from a string_view. |
1736 | * @param __svt The source object convertible to string_view. |
1737 | * @return Reference to this string. |
1738 | */ |
1739 | template<typename _Tp> |
1740 | _GLIBCXX20_CONSTEXPR |
1741 | _If_sv<_Tp, basic_string&> |
1742 | assign(const _Tp& __svt) |
1743 | { |
1744 | __sv_type __sv = __svt; |
1745 | return this->assign(__sv.data(), __sv.size()); |
1746 | } |
1747 | |
1748 | /** |
1749 | * @brief Set value from a range of characters in a string_view. |
1750 | * @param __svt The source object convertible to string_view. |
1751 | * @param __pos The position in the string_view to assign from. |
1752 | * @param __n The number of characters to assign. |
1753 | * @return Reference to this string. |
1754 | */ |
1755 | template<typename _Tp> |
1756 | _GLIBCXX20_CONSTEXPR |
1757 | _If_sv<_Tp, basic_string&> |
1758 | assign(const _Tp& __svt, size_type __pos, size_type __n = npos) |
1759 | { |
1760 | __sv_type __sv = __svt; |
1761 | return _M_replace(pos: size_type(0), len1: this->size(), |
1762 | s: __sv.data() |
1763 | + std::__sv_check(size: __sv.size(), __pos, s: "basic_string::assign" ), |
1764 | len2: std::__sv_limit(size: __sv.size(), __pos, off: __n)); |
1765 | } |
1766 | #endif // C++17 |
1767 | |
1768 | #if __cplusplus >= 201103L |
1769 | /** |
1770 | * @brief Insert multiple characters. |
1771 | * @param __p Const_iterator referencing location in string to |
1772 | * insert at. |
1773 | * @param __n Number of characters to insert |
1774 | * @param __c The character to insert. |
1775 | * @return Iterator referencing the first inserted char. |
1776 | * @throw std::length_error If new length exceeds @c max_size(). |
1777 | * |
1778 | * Inserts @a __n copies of character @a __c starting at the |
1779 | * position referenced by iterator @a __p. If adding |
1780 | * characters causes the length to exceed max_size(), |
1781 | * length_error is thrown. The value of the string doesn't |
1782 | * change if an error is thrown. |
1783 | */ |
1784 | _GLIBCXX20_CONSTEXPR |
1785 | iterator |
1786 | insert(const_iterator __p, size_type __n, _CharT __c) |
1787 | { |
1788 | _GLIBCXX_DEBUG_PEDASSERT(__p >= begin() && __p <= end()); |
1789 | const size_type __pos = __p - begin(); |
1790 | this->replace(__p, __p, __n, __c); |
1791 | return iterator(this->_M_data() + __pos); |
1792 | } |
1793 | #else |
1794 | /** |
1795 | * @brief Insert multiple characters. |
1796 | * @param __p Iterator referencing location in string to insert at. |
1797 | * @param __n Number of characters to insert |
1798 | * @param __c The character to insert. |
1799 | * @throw std::length_error If new length exceeds @c max_size(). |
1800 | * |
1801 | * Inserts @a __n copies of character @a __c starting at the |
1802 | * position referenced by iterator @a __p. If adding |
1803 | * characters causes the length to exceed max_size(), |
1804 | * length_error is thrown. The value of the string doesn't |
1805 | * change if an error is thrown. |
1806 | */ |
1807 | void |
1808 | insert(iterator __p, size_type __n, _CharT __c) |
1809 | { this->replace(__p, __p, __n, __c); } |
1810 | #endif |
1811 | |
1812 | #if __cplusplus >= 201103L |
1813 | /** |
1814 | * @brief Insert a range of characters. |
1815 | * @param __p Const_iterator referencing location in string to |
1816 | * insert at. |
1817 | * @param __beg Start of range. |
1818 | * @param __end End of range. |
1819 | * @return Iterator referencing the first inserted char. |
1820 | * @throw std::length_error If new length exceeds @c max_size(). |
1821 | * |
1822 | * Inserts characters in range [beg,end). If adding characters |
1823 | * causes the length to exceed max_size(), length_error is |
1824 | * thrown. The value of the string doesn't change if an error |
1825 | * is thrown. |
1826 | */ |
1827 | template<class _InputIterator, |
1828 | typename = std::_RequireInputIter<_InputIterator>> |
1829 | _GLIBCXX20_CONSTEXPR |
1830 | iterator |
1831 | insert(const_iterator __p, _InputIterator __beg, _InputIterator __end) |
1832 | { |
1833 | _GLIBCXX_DEBUG_PEDASSERT(__p >= begin() && __p <= end()); |
1834 | const size_type __pos = __p - begin(); |
1835 | this->replace(__p, __p, __beg, __end); |
1836 | return iterator(this->_M_data() + __pos); |
1837 | } |
1838 | #else |
1839 | /** |
1840 | * @brief Insert a range of characters. |
1841 | * @param __p Iterator referencing location in string to insert at. |
1842 | * @param __beg Start of range. |
1843 | * @param __end End of range. |
1844 | * @throw std::length_error If new length exceeds @c max_size(). |
1845 | * |
1846 | * Inserts characters in range [__beg,__end). If adding |
1847 | * characters causes the length to exceed max_size(), |
1848 | * length_error is thrown. The value of the string doesn't |
1849 | * change if an error is thrown. |
1850 | */ |
1851 | template<class _InputIterator> |
1852 | void |
1853 | insert(iterator __p, _InputIterator __beg, _InputIterator __end) |
1854 | { this->replace(__p, __p, __beg, __end); } |
1855 | #endif |
1856 | |
1857 | #if __cplusplus >= 201103L |
1858 | /** |
1859 | * @brief Insert an initializer_list of characters. |
1860 | * @param __p Iterator referencing location in string to insert at. |
1861 | * @param __l The initializer_list of characters to insert. |
1862 | * @throw std::length_error If new length exceeds @c max_size(). |
1863 | */ |
1864 | _GLIBCXX20_CONSTEXPR |
1865 | iterator |
1866 | insert(const_iterator __p, initializer_list<_CharT> __l) |
1867 | { return this->insert(__p, __l.begin(), __l.end()); } |
1868 | |
1869 | #ifdef _GLIBCXX_DEFINING_STRING_INSTANTIATIONS |
1870 | // See PR libstdc++/83328 |
1871 | void |
1872 | insert(iterator __p, initializer_list<_CharT> __l) |
1873 | { |
1874 | _GLIBCXX_DEBUG_PEDASSERT(__p >= begin() && __p <= end()); |
1875 | this->insert(__p - begin(), __l.begin(), __l.size()); |
1876 | } |
1877 | #endif |
1878 | #endif // C++11 |
1879 | |
1880 | /** |
1881 | * @brief Insert value of a string. |
1882 | * @param __pos1 Position in string to insert at. |
1883 | * @param __str The string to insert. |
1884 | * @return Reference to this string. |
1885 | * @throw std::length_error If new length exceeds @c max_size(). |
1886 | * |
1887 | * Inserts value of @a __str starting at @a __pos1. If adding |
1888 | * characters causes the length to exceed max_size(), |
1889 | * length_error is thrown. The value of the string doesn't |
1890 | * change if an error is thrown. |
1891 | */ |
1892 | _GLIBCXX20_CONSTEXPR |
1893 | basic_string& |
1894 | insert(size_type __pos1, const basic_string& __str) |
1895 | { return this->replace(__pos1, size_type(0), |
1896 | __str._M_data(), __str.size()); } |
1897 | |
1898 | /** |
1899 | * @brief Insert a substring. |
1900 | * @param __pos1 Position in string to insert at. |
1901 | * @param __str The string to insert. |
1902 | * @param __pos2 Start of characters in str to insert. |
1903 | * @param __n Number of characters to insert. |
1904 | * @return Reference to this string. |
1905 | * @throw std::length_error If new length exceeds @c max_size(). |
1906 | * @throw std::out_of_range If @a pos1 > size() or |
1907 | * @a __pos2 > @a str.size(). |
1908 | * |
1909 | * Starting at @a pos1, insert @a __n character of @a __str |
1910 | * beginning with @a __pos2. If adding characters causes the |
1911 | * length to exceed max_size(), length_error is thrown. If @a |
1912 | * __pos1 is beyond the end of this string or @a __pos2 is |
1913 | * beyond the end of @a __str, out_of_range is thrown. The |
1914 | * value of the string doesn't change if an error is thrown. |
1915 | */ |
1916 | _GLIBCXX20_CONSTEXPR |
1917 | basic_string& |
1918 | insert(size_type __pos1, const basic_string& __str, |
1919 | size_type __pos2, size_type __n = npos) |
1920 | { return this->replace(__pos1, size_type(0), __str._M_data() |
1921 | + __str._M_check(__pos2, "basic_string::insert" ), |
1922 | __str._M_limit(__pos2, __n)); } |
1923 | |
1924 | /** |
1925 | * @brief Insert a C substring. |
1926 | * @param __pos Position in string to insert at. |
1927 | * @param __s The C string to insert. |
1928 | * @param __n The number of characters to insert. |
1929 | * @return Reference to this string. |
1930 | * @throw std::length_error If new length exceeds @c max_size(). |
1931 | * @throw std::out_of_range If @a __pos is beyond the end of this |
1932 | * string. |
1933 | * |
1934 | * Inserts the first @a __n characters of @a __s starting at @a |
1935 | * __pos. If adding characters causes the length to exceed |
1936 | * max_size(), length_error is thrown. If @a __pos is beyond |
1937 | * end(), out_of_range is thrown. The value of the string |
1938 | * doesn't change if an error is thrown. |
1939 | */ |
1940 | _GLIBCXX20_CONSTEXPR |
1941 | basic_string& |
1942 | insert(size_type __pos, const _CharT* __s, size_type __n) |
1943 | { return this->replace(__pos, size_type(0), __s, __n); } |
1944 | |
1945 | /** |
1946 | * @brief Insert a C string. |
1947 | * @param __pos Position in string to insert at. |
1948 | * @param __s The C string to insert. |
1949 | * @return Reference to this string. |
1950 | * @throw std::length_error If new length exceeds @c max_size(). |
1951 | * @throw std::out_of_range If @a pos is beyond the end of this |
1952 | * string. |
1953 | * |
1954 | * Inserts the first @a n characters of @a __s starting at @a __pos. If |
1955 | * adding characters causes the length to exceed max_size(), |
1956 | * length_error is thrown. If @a __pos is beyond end(), out_of_range is |
1957 | * thrown. The value of the string doesn't change if an error is |
1958 | * thrown. |
1959 | */ |
1960 | _GLIBCXX20_CONSTEXPR |
1961 | basic_string& |
1962 | insert(size_type __pos, const _CharT* __s) |
1963 | { |
1964 | __glibcxx_requires_string(__s); |
1965 | return this->replace(__pos, size_type(0), __s, |
1966 | traits_type::length(__s)); |
1967 | } |
1968 | |
1969 | /** |
1970 | * @brief Insert multiple characters. |
1971 | * @param __pos Index in string to insert at. |
1972 | * @param __n Number of characters to insert |
1973 | * @param __c The character to insert. |
1974 | * @return Reference to this string. |
1975 | * @throw std::length_error If new length exceeds @c max_size(). |
1976 | * @throw std::out_of_range If @a __pos is beyond the end of this |
1977 | * string. |
1978 | * |
1979 | * Inserts @a __n copies of character @a __c starting at index |
1980 | * @a __pos. If adding characters causes the length to exceed |
1981 | * max_size(), length_error is thrown. If @a __pos > length(), |
1982 | * out_of_range is thrown. The value of the string doesn't |
1983 | * change if an error is thrown. |
1984 | */ |
1985 | _GLIBCXX20_CONSTEXPR |
1986 | basic_string& |
1987 | insert(size_type __pos, size_type __n, _CharT __c) |
1988 | { return _M_replace_aux(pos1: _M_check(__pos, s: "basic_string::insert" ), |
1989 | n1: size_type(0), n2: __n, __c); } |
1990 | |
1991 | /** |
1992 | * @brief Insert one character. |
1993 | * @param __p Iterator referencing position in string to insert at. |
1994 | * @param __c The character to insert. |
1995 | * @return Iterator referencing newly inserted char. |
1996 | * @throw std::length_error If new length exceeds @c max_size(). |
1997 | * |
1998 | * Inserts character @a __c at position referenced by @a __p. |
1999 | * If adding character causes the length to exceed max_size(), |
2000 | * length_error is thrown. If @a __p is beyond end of string, |
2001 | * out_of_range is thrown. The value of the string doesn't |
2002 | * change if an error is thrown. |
2003 | */ |
2004 | _GLIBCXX20_CONSTEXPR |
2005 | iterator |
2006 | insert(__const_iterator __p, _CharT __c) |
2007 | { |
2008 | _GLIBCXX_DEBUG_PEDASSERT(__p >= begin() && __p <= end()); |
2009 | const size_type __pos = __p - begin(); |
2010 | _M_replace_aux(pos1: __pos, n1: size_type(0), n2: size_type(1), __c); |
2011 | return iterator(_M_data() + __pos); |
2012 | } |
2013 | |
2014 | #if __cplusplus >= 201703L |
2015 | /** |
2016 | * @brief Insert a string_view. |
2017 | * @param __pos Position in string to insert at. |
2018 | * @param __svt The object convertible to string_view to insert. |
2019 | * @return Reference to this string. |
2020 | */ |
2021 | template<typename _Tp> |
2022 | _GLIBCXX20_CONSTEXPR |
2023 | _If_sv<_Tp, basic_string&> |
2024 | insert(size_type __pos, const _Tp& __svt) |
2025 | { |
2026 | __sv_type __sv = __svt; |
2027 | return this->insert(__pos, __sv.data(), __sv.size()); |
2028 | } |
2029 | |
2030 | /** |
2031 | * @brief Insert a string_view. |
2032 | * @param __pos1 Position in string to insert at. |
2033 | * @param __svt The object convertible to string_view to insert from. |
2034 | * @param __pos2 Start of characters in str to insert. |
2035 | * @param __n The number of characters to insert. |
2036 | * @return Reference to this string. |
2037 | */ |
2038 | template<typename _Tp> |
2039 | _GLIBCXX20_CONSTEXPR |
2040 | _If_sv<_Tp, basic_string&> |
2041 | insert(size_type __pos1, const _Tp& __svt, |
2042 | size_type __pos2, size_type __n = npos) |
2043 | { |
2044 | __sv_type __sv = __svt; |
2045 | return this->replace(__pos1, size_type(0), |
2046 | __sv.data() |
2047 | + std::__sv_check(size: __sv.size(), pos: __pos2, s: "basic_string::insert" ), |
2048 | std::__sv_limit(size: __sv.size(), pos: __pos2, off: __n)); |
2049 | } |
2050 | #endif // C++17 |
2051 | |
2052 | /** |
2053 | * @brief Remove characters. |
2054 | * @param __pos Index of first character to remove (default 0). |
2055 | * @param __n Number of characters to remove (default remainder). |
2056 | * @return Reference to this string. |
2057 | * @throw std::out_of_range If @a pos is beyond the end of this |
2058 | * string. |
2059 | * |
2060 | * Removes @a __n characters from this string starting at @a |
2061 | * __pos. The length of the string is reduced by @a __n. If |
2062 | * there are < @a __n characters to remove, the remainder of |
2063 | * the string is truncated. If @a __p is beyond end of string, |
2064 | * out_of_range is thrown. The value of the string doesn't |
2065 | * change if an error is thrown. |
2066 | */ |
2067 | _GLIBCXX20_CONSTEXPR |
2068 | basic_string& |
2069 | erase(size_type __pos = 0, size_type __n = npos) |
2070 | { |
2071 | _M_check(__pos, s: "basic_string::erase" ); |
2072 | if (__n == npos) |
2073 | this->_M_set_length(__pos); |
2074 | else if (__n != 0) |
2075 | this->_M_erase(__pos, _M_limit(__pos, off: __n)); |
2076 | return *this; |
2077 | } |
2078 | |
2079 | /** |
2080 | * @brief Remove one character. |
2081 | * @param __position Iterator referencing the character to remove. |
2082 | * @return iterator referencing same location after removal. |
2083 | * |
2084 | * Removes the character at @a __position from this string. The value |
2085 | * of the string doesn't change if an error is thrown. |
2086 | */ |
2087 | _GLIBCXX20_CONSTEXPR |
2088 | iterator |
2089 | erase(__const_iterator __position) |
2090 | { |
2091 | _GLIBCXX_DEBUG_PEDASSERT(__position >= begin() |
2092 | && __position < end()); |
2093 | const size_type __pos = __position - begin(); |
2094 | this->_M_erase(__pos, size_type(1)); |
2095 | return iterator(_M_data() + __pos); |
2096 | } |
2097 | |
2098 | /** |
2099 | * @brief Remove a range of characters. |
2100 | * @param __first Iterator referencing the first character to remove. |
2101 | * @param __last Iterator referencing the end of the range. |
2102 | * @return Iterator referencing location of first after removal. |
2103 | * |
2104 | * Removes the characters in the range [first,last) from this string. |
2105 | * The value of the string doesn't change if an error is thrown. |
2106 | */ |
2107 | _GLIBCXX20_CONSTEXPR |
2108 | iterator |
2109 | erase(__const_iterator __first, __const_iterator __last) |
2110 | { |
2111 | _GLIBCXX_DEBUG_PEDASSERT(__first >= begin() && __first <= __last |
2112 | && __last <= end()); |
2113 | const size_type __pos = __first - begin(); |
2114 | if (__last == end()) |
2115 | this->_M_set_length(__pos); |
2116 | else |
2117 | this->_M_erase(__pos, __last - __first); |
2118 | return iterator(this->_M_data() + __pos); |
2119 | } |
2120 | |
2121 | #if __cplusplus >= 201103L |
2122 | /** |
2123 | * @brief Remove the last character. |
2124 | * |
2125 | * The string must be non-empty. |
2126 | */ |
2127 | _GLIBCXX20_CONSTEXPR |
2128 | void |
2129 | pop_back() noexcept |
2130 | { |
2131 | __glibcxx_assert(!empty()); |
2132 | _M_erase(pos: size() - 1, n: 1); |
2133 | } |
2134 | #endif // C++11 |
2135 | |
2136 | /** |
2137 | * @brief Replace characters with value from another string. |
2138 | * @param __pos Index of first character to replace. |
2139 | * @param __n Number of characters to be replaced. |
2140 | * @param __str String to insert. |
2141 | * @return Reference to this string. |
2142 | * @throw std::out_of_range If @a pos is beyond the end of this |
2143 | * string. |
2144 | * @throw std::length_error If new length exceeds @c max_size(). |
2145 | * |
2146 | * Removes the characters in the range [__pos,__pos+__n) from |
2147 | * this string. In place, the value of @a __str is inserted. |
2148 | * If @a __pos is beyond end of string, out_of_range is thrown. |
2149 | * If the length of the result exceeds max_size(), length_error |
2150 | * is thrown. The value of the string doesn't change if an |
2151 | * error is thrown. |
2152 | */ |
2153 | _GLIBCXX20_CONSTEXPR |
2154 | basic_string& |
2155 | replace(size_type __pos, size_type __n, const basic_string& __str) |
2156 | { return this->replace(__pos, __n, __str._M_data(), __str.size()); } |
2157 | |
2158 | /** |
2159 | * @brief Replace characters with value from another string. |
2160 | * @param __pos1 Index of first character to replace. |
2161 | * @param __n1 Number of characters to be replaced. |
2162 | * @param __str String to insert. |
2163 | * @param __pos2 Index of first character of str to use. |
2164 | * @param __n2 Number of characters from str to use. |
2165 | * @return Reference to this string. |
2166 | * @throw std::out_of_range If @a __pos1 > size() or @a __pos2 > |
2167 | * __str.size(). |
2168 | * @throw std::length_error If new length exceeds @c max_size(). |
2169 | * |
2170 | * Removes the characters in the range [__pos1,__pos1 + n) from this |
2171 | * string. In place, the value of @a __str is inserted. If @a __pos is |
2172 | * beyond end of string, out_of_range is thrown. If the length of the |
2173 | * result exceeds max_size(), length_error is thrown. The value of the |
2174 | * string doesn't change if an error is thrown. |
2175 | */ |
2176 | _GLIBCXX20_CONSTEXPR |
2177 | basic_string& |
2178 | replace(size_type __pos1, size_type __n1, const basic_string& __str, |
2179 | size_type __pos2, size_type __n2 = npos) |
2180 | { return this->replace(__pos1, __n1, __str._M_data() |
2181 | + __str._M_check(__pos2, "basic_string::replace" ), |
2182 | __str._M_limit(__pos2, __n2)); } |
2183 | |
2184 | /** |
2185 | * @brief Replace characters with value of a C substring. |
2186 | * @param __pos Index of first character to replace. |
2187 | * @param __n1 Number of characters to be replaced. |
2188 | * @param __s C string to insert. |
2189 | * @param __n2 Number of characters from @a s to use. |
2190 | * @return Reference to this string. |
2191 | * @throw std::out_of_range If @a pos1 > size(). |
2192 | * @throw std::length_error If new length exceeds @c max_size(). |
2193 | * |
2194 | * Removes the characters in the range [__pos,__pos + __n1) |
2195 | * from this string. In place, the first @a __n2 characters of |
2196 | * @a __s are inserted, or all of @a __s if @a __n2 is too large. If |
2197 | * @a __pos is beyond end of string, out_of_range is thrown. If |
2198 | * the length of result exceeds max_size(), length_error is |
2199 | * thrown. The value of the string doesn't change if an error |
2200 | * is thrown. |
2201 | */ |
2202 | _GLIBCXX20_CONSTEXPR |
2203 | basic_string& |
2204 | replace(size_type __pos, size_type __n1, const _CharT* __s, |
2205 | size_type __n2) |
2206 | { |
2207 | __glibcxx_requires_string_len(__s, __n2); |
2208 | return _M_replace(pos: _M_check(__pos, s: "basic_string::replace" ), |
2209 | len1: _M_limit(__pos, off: __n1), __s, len2: __n2); |
2210 | } |
2211 | |
2212 | /** |
2213 | * @brief Replace characters with value of a C string. |
2214 | * @param __pos Index of first character to replace. |
2215 | * @param __n1 Number of characters to be replaced. |
2216 | * @param __s C string to insert. |
2217 | * @return Reference to this string. |
2218 | * @throw std::out_of_range If @a pos > size(). |
2219 | * @throw std::length_error If new length exceeds @c max_size(). |
2220 | * |
2221 | * Removes the characters in the range [__pos,__pos + __n1) |
2222 | * from this string. In place, the characters of @a __s are |
2223 | * inserted. If @a __pos is beyond end of string, out_of_range |
2224 | * is thrown. If the length of result exceeds max_size(), |
2225 | * length_error is thrown. The value of the string doesn't |
2226 | * change if an error is thrown. |
2227 | */ |
2228 | _GLIBCXX20_CONSTEXPR |
2229 | basic_string& |
2230 | replace(size_type __pos, size_type __n1, const _CharT* __s) |
2231 | { |
2232 | __glibcxx_requires_string(__s); |
2233 | return this->replace(__pos, __n1, __s, traits_type::length(__s)); |
2234 | } |
2235 | |
2236 | /** |
2237 | * @brief Replace characters with multiple characters. |
2238 | * @param __pos Index of first character to replace. |
2239 | * @param __n1 Number of characters to be replaced. |
2240 | * @param __n2 Number of characters to insert. |
2241 | * @param __c Character to insert. |
2242 | * @return Reference to this string. |
2243 | * @throw std::out_of_range If @a __pos > size(). |
2244 | * @throw std::length_error If new length exceeds @c max_size(). |
2245 | * |
2246 | * Removes the characters in the range [pos,pos + n1) from this |
2247 | * string. In place, @a __n2 copies of @a __c are inserted. |
2248 | * If @a __pos is beyond end of string, out_of_range is thrown. |
2249 | * If the length of result exceeds max_size(), length_error is |
2250 | * thrown. The value of the string doesn't change if an error |
2251 | * is thrown. |
2252 | */ |
2253 | _GLIBCXX20_CONSTEXPR |
2254 | basic_string& |
2255 | replace(size_type __pos, size_type __n1, size_type __n2, _CharT __c) |
2256 | { return _M_replace_aux(pos1: _M_check(__pos, s: "basic_string::replace" ), |
2257 | n1: _M_limit(__pos, off: __n1), __n2, __c); } |
2258 | |
2259 | /** |
2260 | * @brief Replace range of characters with string. |
2261 | * @param __i1 Iterator referencing start of range to replace. |
2262 | * @param __i2 Iterator referencing end of range to replace. |
2263 | * @param __str String value to insert. |
2264 | * @return Reference to this string. |
2265 | * @throw std::length_error If new length exceeds @c max_size(). |
2266 | * |
2267 | * Removes the characters in the range [__i1,__i2). In place, |
2268 | * the value of @a __str is inserted. If the length of result |
2269 | * exceeds max_size(), length_error is thrown. The value of |
2270 | * the string doesn't change if an error is thrown. |
2271 | */ |
2272 | _GLIBCXX20_CONSTEXPR |
2273 | basic_string& |
2274 | replace(__const_iterator __i1, __const_iterator __i2, |
2275 | const basic_string& __str) |
2276 | { return this->replace(__i1, __i2, __str._M_data(), __str.size()); } |
2277 | |
2278 | /** |
2279 | * @brief Replace range of characters with C substring. |
2280 | * @param __i1 Iterator referencing start of range to replace. |
2281 | * @param __i2 Iterator referencing end of range to replace. |
2282 | * @param __s C string value to insert. |
2283 | * @param __n Number of characters from s to insert. |
2284 | * @return Reference to this string. |
2285 | * @throw std::length_error If new length exceeds @c max_size(). |
2286 | * |
2287 | * Removes the characters in the range [__i1,__i2). In place, |
2288 | * the first @a __n characters of @a __s are inserted. If the |
2289 | * length of result exceeds max_size(), length_error is thrown. |
2290 | * The value of the string doesn't change if an error is |
2291 | * thrown. |
2292 | */ |
2293 | _GLIBCXX20_CONSTEXPR |
2294 | basic_string& |
2295 | replace(__const_iterator __i1, __const_iterator __i2, |
2296 | const _CharT* __s, size_type __n) |
2297 | { |
2298 | _GLIBCXX_DEBUG_PEDASSERT(begin() <= __i1 && __i1 <= __i2 |
2299 | && __i2 <= end()); |
2300 | return this->replace(__i1 - begin(), __i2 - __i1, __s, __n); |
2301 | } |
2302 | |
2303 | /** |
2304 | * @brief Replace range of characters with C string. |
2305 | * @param __i1 Iterator referencing start of range to replace. |
2306 | * @param __i2 Iterator referencing end of range to replace. |
2307 | * @param __s C string value to insert. |
2308 | * @return Reference to this string. |
2309 | * @throw std::length_error If new length exceeds @c max_size(). |
2310 | * |
2311 | * Removes the characters in the range [__i1,__i2). In place, |
2312 | * the characters of @a __s are inserted. If the length of |
2313 | * result exceeds max_size(), length_error is thrown. The |
2314 | * value of the string doesn't change if an error is thrown. |
2315 | */ |
2316 | _GLIBCXX20_CONSTEXPR |
2317 | basic_string& |
2318 | replace(__const_iterator __i1, __const_iterator __i2, const _CharT* __s) |
2319 | { |
2320 | __glibcxx_requires_string(__s); |
2321 | return this->replace(__i1, __i2, __s, traits_type::length(__s)); |
2322 | } |
2323 | |
2324 | /** |
2325 | * @brief Replace range of characters with multiple characters |
2326 | * @param __i1 Iterator referencing start of range to replace. |
2327 | * @param __i2 Iterator referencing end of range to replace. |
2328 | * @param __n Number of characters to insert. |
2329 | * @param __c Character to insert. |
2330 | * @return Reference to this string. |
2331 | * @throw std::length_error If new length exceeds @c max_size(). |
2332 | * |
2333 | * Removes the characters in the range [__i1,__i2). In place, |
2334 | * @a __n copies of @a __c are inserted. If the length of |
2335 | * result exceeds max_size(), length_error is thrown. The |
2336 | * value of the string doesn't change if an error is thrown. |
2337 | */ |
2338 | _GLIBCXX20_CONSTEXPR |
2339 | basic_string& |
2340 | replace(__const_iterator __i1, __const_iterator __i2, size_type __n, |
2341 | _CharT __c) |
2342 | { |
2343 | _GLIBCXX_DEBUG_PEDASSERT(begin() <= __i1 && __i1 <= __i2 |
2344 | && __i2 <= end()); |
2345 | return _M_replace_aux(pos1: __i1 - begin(), n1: __i2 - __i1, n2: __n, __c); |
2346 | } |
2347 | |
2348 | /** |
2349 | * @brief Replace range of characters with range. |
2350 | * @param __i1 Iterator referencing start of range to replace. |
2351 | * @param __i2 Iterator referencing end of range to replace. |
2352 | * @param __k1 Iterator referencing start of range to insert. |
2353 | * @param __k2 Iterator referencing end of range to insert. |
2354 | * @return Reference to this string. |
2355 | * @throw std::length_error If new length exceeds @c max_size(). |
2356 | * |
2357 | * Removes the characters in the range [__i1,__i2). In place, |
2358 | * characters in the range [__k1,__k2) are inserted. If the |
2359 | * length of result exceeds max_size(), length_error is thrown. |
2360 | * The value of the string doesn't change if an error is |
2361 | * thrown. |
2362 | */ |
2363 | #if __cplusplus >= 201103L |
2364 | template<class _InputIterator, |
2365 | typename = std::_RequireInputIter<_InputIterator>> |
2366 | _GLIBCXX20_CONSTEXPR |
2367 | basic_string& |
2368 | replace(const_iterator __i1, const_iterator __i2, |
2369 | _InputIterator __k1, _InputIterator __k2) |
2370 | { |
2371 | _GLIBCXX_DEBUG_PEDASSERT(begin() <= __i1 && __i1 <= __i2 |
2372 | && __i2 <= end()); |
2373 | __glibcxx_requires_valid_range(__k1, __k2); |
2374 | return this->_M_replace_dispatch(__i1, __i2, __k1, __k2, |
2375 | std::__false_type()); |
2376 | } |
2377 | #else |
2378 | template<class _InputIterator> |
2379 | #ifdef _GLIBCXX_DISAMBIGUATE_REPLACE_INST |
2380 | typename __enable_if_not_native_iterator<_InputIterator>::__type |
2381 | #else |
2382 | basic_string& |
2383 | #endif |
2384 | replace(iterator __i1, iterator __i2, |
2385 | _InputIterator __k1, _InputIterator __k2) |
2386 | { |
2387 | _GLIBCXX_DEBUG_PEDASSERT(begin() <= __i1 && __i1 <= __i2 |
2388 | && __i2 <= end()); |
2389 | __glibcxx_requires_valid_range(__k1, __k2); |
2390 | typedef typename std::__is_integer<_InputIterator>::__type _Integral; |
2391 | return _M_replace_dispatch(__i1, __i2, __k1, __k2, _Integral()); |
2392 | } |
2393 | #endif |
2394 | |
2395 | // Specializations for the common case of pointer and iterator: |
2396 | // useful to avoid the overhead of temporary buffering in _M_replace. |
2397 | _GLIBCXX20_CONSTEXPR |
2398 | basic_string& |
2399 | replace(__const_iterator __i1, __const_iterator __i2, |
2400 | _CharT* __k1, _CharT* __k2) |
2401 | { |
2402 | _GLIBCXX_DEBUG_PEDASSERT(begin() <= __i1 && __i1 <= __i2 |
2403 | && __i2 <= end()); |
2404 | __glibcxx_requires_valid_range(__k1, __k2); |
2405 | return this->replace(__i1 - begin(), __i2 - __i1, |
2406 | __k1, __k2 - __k1); |
2407 | } |
2408 | |
2409 | _GLIBCXX20_CONSTEXPR |
2410 | basic_string& |
2411 | replace(__const_iterator __i1, __const_iterator __i2, |
2412 | const _CharT* __k1, const _CharT* __k2) |
2413 | { |
2414 | _GLIBCXX_DEBUG_PEDASSERT(begin() <= __i1 && __i1 <= __i2 |
2415 | && __i2 <= end()); |
2416 | __glibcxx_requires_valid_range(__k1, __k2); |
2417 | return this->replace(__i1 - begin(), __i2 - __i1, |
2418 | __k1, __k2 - __k1); |
2419 | } |
2420 | |
2421 | _GLIBCXX20_CONSTEXPR |
2422 | basic_string& |
2423 | replace(__const_iterator __i1, __const_iterator __i2, |
2424 | iterator __k1, iterator __k2) |
2425 | { |
2426 | _GLIBCXX_DEBUG_PEDASSERT(begin() <= __i1 && __i1 <= __i2 |
2427 | && __i2 <= end()); |
2428 | __glibcxx_requires_valid_range(__k1, __k2); |
2429 | return this->replace(__i1 - begin(), __i2 - __i1, |
2430 | __k1.base(), __k2 - __k1); |
2431 | } |
2432 | |
2433 | _GLIBCXX20_CONSTEXPR |
2434 | basic_string& |
2435 | replace(__const_iterator __i1, __const_iterator __i2, |
2436 | const_iterator __k1, const_iterator __k2) |
2437 | { |
2438 | _GLIBCXX_DEBUG_PEDASSERT(begin() <= __i1 && __i1 <= __i2 |
2439 | && __i2 <= end()); |
2440 | __glibcxx_requires_valid_range(__k1, __k2); |
2441 | return this->replace(__i1 - begin(), __i2 - __i1, |
2442 | __k1.base(), __k2 - __k1); |
2443 | } |
2444 | |
2445 | #if __cplusplus >= 201103L |
2446 | /** |
2447 | * @brief Replace range of characters with initializer_list. |
2448 | * @param __i1 Iterator referencing start of range to replace. |
2449 | * @param __i2 Iterator referencing end of range to replace. |
2450 | * @param __l The initializer_list of characters to insert. |
2451 | * @return Reference to this string. |
2452 | * @throw std::length_error If new length exceeds @c max_size(). |
2453 | * |
2454 | * Removes the characters in the range [__i1,__i2). In place, |
2455 | * characters in the range [__k1,__k2) are inserted. If the |
2456 | * length of result exceeds max_size(), length_error is thrown. |
2457 | * The value of the string doesn't change if an error is |
2458 | * thrown. |
2459 | */ |
2460 | _GLIBCXX20_CONSTEXPR |
2461 | basic_string& replace(const_iterator __i1, const_iterator __i2, |
2462 | initializer_list<_CharT> __l) |
2463 | { return this->replace(__i1, __i2, __l.begin(), __l.size()); } |
2464 | #endif // C++11 |
2465 | |
2466 | #if __cplusplus >= 201703L |
2467 | /** |
2468 | * @brief Replace range of characters with string_view. |
2469 | * @param __pos The position to replace at. |
2470 | * @param __n The number of characters to replace. |
2471 | * @param __svt The object convertible to string_view to insert. |
2472 | * @return Reference to this string. |
2473 | */ |
2474 | template<typename _Tp> |
2475 | _GLIBCXX20_CONSTEXPR |
2476 | _If_sv<_Tp, basic_string&> |
2477 | replace(size_type __pos, size_type __n, const _Tp& __svt) |
2478 | { |
2479 | __sv_type __sv = __svt; |
2480 | return this->replace(__pos, __n, __sv.data(), __sv.size()); |
2481 | } |
2482 | |
2483 | /** |
2484 | * @brief Replace range of characters with string_view. |
2485 | * @param __pos1 The position to replace at. |
2486 | * @param __n1 The number of characters to replace. |
2487 | * @param __svt The object convertible to string_view to insert from. |
2488 | * @param __pos2 The position in the string_view to insert from. |
2489 | * @param __n2 The number of characters to insert. |
2490 | * @return Reference to this string. |
2491 | */ |
2492 | template<typename _Tp> |
2493 | _GLIBCXX20_CONSTEXPR |
2494 | _If_sv<_Tp, basic_string&> |
2495 | replace(size_type __pos1, size_type __n1, const _Tp& __svt, |
2496 | size_type __pos2, size_type __n2 = npos) |
2497 | { |
2498 | __sv_type __sv = __svt; |
2499 | return this->replace(__pos1, __n1, |
2500 | __sv.data() |
2501 | + std::__sv_check(size: __sv.size(), pos: __pos2, s: "basic_string::replace" ), |
2502 | std::__sv_limit(size: __sv.size(), pos: __pos2, off: __n2)); |
2503 | } |
2504 | |
2505 | /** |
2506 | * @brief Replace range of characters with string_view. |
2507 | * @param __i1 An iterator referencing the start position |
2508 | to replace at. |
2509 | * @param __i2 An iterator referencing the end position |
2510 | for the replace. |
2511 | * @param __svt The object convertible to string_view to insert from. |
2512 | * @return Reference to this string. |
2513 | */ |
2514 | template<typename _Tp> |
2515 | _GLIBCXX20_CONSTEXPR |
2516 | _If_sv<_Tp, basic_string&> |
2517 | replace(const_iterator __i1, const_iterator __i2, const _Tp& __svt) |
2518 | { |
2519 | __sv_type __sv = __svt; |
2520 | return this->replace(__i1 - begin(), __i2 - __i1, __sv); |
2521 | } |
2522 | #endif // C++17 |
2523 | |
2524 | private: |
2525 | template<class _Integer> |
2526 | _GLIBCXX20_CONSTEXPR |
2527 | basic_string& |
2528 | _M_replace_dispatch(const_iterator __i1, const_iterator __i2, |
2529 | _Integer __n, _Integer __val, __true_type) |
2530 | { return _M_replace_aux(pos1: __i1 - begin(), n1: __i2 - __i1, n2: __n, c: __val); } |
2531 | |
2532 | template<class _InputIterator> |
2533 | _GLIBCXX20_CONSTEXPR |
2534 | basic_string& |
2535 | _M_replace_dispatch(const_iterator __i1, const_iterator __i2, |
2536 | _InputIterator __k1, _InputIterator __k2, |
2537 | __false_type); |
2538 | |
2539 | _GLIBCXX20_CONSTEXPR |
2540 | basic_string& |
2541 | _M_replace_aux(size_type __pos1, size_type __n1, size_type __n2, |
2542 | _CharT __c); |
2543 | |
2544 | __attribute__((__noinline__, __noclone__, __cold__)) void |
2545 | _M_replace_cold(pointer __p, size_type __len1, const _CharT* __s, |
2546 | const size_type __len2, const size_type __how_much); |
2547 | |
2548 | _GLIBCXX20_CONSTEXPR |
2549 | basic_string& |
2550 | _M_replace(size_type __pos, size_type __len1, const _CharT* __s, |
2551 | const size_type __len2); |
2552 | |
2553 | _GLIBCXX20_CONSTEXPR |
2554 | basic_string& |
2555 | _M_append(const _CharT* __s, size_type __n); |
2556 | |
2557 | public: |
2558 | |
2559 | /** |
2560 | * @brief Copy substring into C string. |
2561 | * @param __s C string to copy value into. |
2562 | * @param __n Number of characters to copy. |
2563 | * @param __pos Index of first character to copy. |
2564 | * @return Number of characters actually copied |
2565 | * @throw std::out_of_range If __pos > size(). |
2566 | * |
2567 | * Copies up to @a __n characters starting at @a __pos into the |
2568 | * C string @a __s. If @a __pos is %greater than size(), |
2569 | * out_of_range is thrown. |
2570 | */ |
2571 | _GLIBCXX20_CONSTEXPR |
2572 | size_type |
2573 | copy(_CharT* __s, size_type __n, size_type __pos = 0) const; |
2574 | |
2575 | /** |
2576 | * @brief Swap contents with another string. |
2577 | * @param __s String to swap with. |
2578 | * |
2579 | * Exchanges the contents of this string with that of @a __s in constant |
2580 | * time. |
2581 | */ |
2582 | _GLIBCXX20_CONSTEXPR |
2583 | void |
2584 | swap(basic_string& __s) _GLIBCXX_NOEXCEPT; |
2585 | |
2586 | // String operations: |
2587 | /** |
2588 | * @brief Return const pointer to null-terminated contents. |
2589 | * |
2590 | * This is a handle to internal data. Do not modify or dire things may |
2591 | * happen. |
2592 | */ |
2593 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
2594 | const _CharT* |
2595 | c_str() const _GLIBCXX_NOEXCEPT |
2596 | { return _M_data(); } |
2597 | |
2598 | /** |
2599 | * @brief Return const pointer to contents. |
2600 | * |
2601 | * This is a pointer to internal data. It is undefined to modify |
2602 | * the contents through the returned pointer. To get a pointer that |
2603 | * allows modifying the contents use @c &str[0] instead, |
2604 | * (or in C++17 the non-const @c str.data() overload). |
2605 | */ |
2606 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
2607 | const _CharT* |
2608 | data() const _GLIBCXX_NOEXCEPT |
2609 | { return _M_data(); } |
2610 | |
2611 | #if __cplusplus >= 201703L |
2612 | /** |
2613 | * @brief Return non-const pointer to contents. |
2614 | * |
2615 | * This is a pointer to the character sequence held by the string. |
2616 | * Modifying the characters in the sequence is allowed. |
2617 | */ |
2618 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
2619 | _CharT* |
2620 | data() noexcept |
2621 | { return _M_data(); } |
2622 | #endif |
2623 | |
2624 | /** |
2625 | * @brief Return copy of allocator used to construct this string. |
2626 | */ |
2627 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
2628 | allocator_type |
2629 | get_allocator() const _GLIBCXX_NOEXCEPT |
2630 | { return _M_get_allocator(); } |
2631 | |
2632 | /** |
2633 | * @brief Find position of a C substring. |
2634 | * @param __s C string to locate. |
2635 | * @param __pos Index of character to search from. |
2636 | * @param __n Number of characters from @a s to search for. |
2637 | * @return Index of start of first occurrence. |
2638 | * |
2639 | * Starting from @a __pos, searches forward for the first @a |
2640 | * __n characters in @a __s within this string. If found, |
2641 | * returns the index where it begins. If not found, returns |
2642 | * npos. |
2643 | */ |
2644 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
2645 | size_type |
2646 | find(const _CharT* __s, size_type __pos, size_type __n) const |
2647 | _GLIBCXX_NOEXCEPT; |
2648 | |
2649 | /** |
2650 | * @brief Find position of a string. |
2651 | * @param __str String to locate. |
2652 | * @param __pos Index of character to search from (default 0). |
2653 | * @return Index of start of first occurrence. |
2654 | * |
2655 | * Starting from @a __pos, searches forward for value of @a __str within |
2656 | * this string. If found, returns the index where it begins. If not |
2657 | * found, returns npos. |
2658 | */ |
2659 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
2660 | size_type |
2661 | find(const basic_string& __str, size_type __pos = 0) const |
2662 | _GLIBCXX_NOEXCEPT |
2663 | { return this->find(__str.data(), __pos, __str.size()); } |
2664 | |
2665 | #if __cplusplus >= 201703L |
2666 | /** |
2667 | * @brief Find position of a string_view. |
2668 | * @param __svt The object convertible to string_view to locate. |
2669 | * @param __pos Index of character to search from (default 0). |
2670 | * @return Index of start of first occurrence. |
2671 | */ |
2672 | template<typename _Tp> |
2673 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
2674 | _If_sv<_Tp, size_type> |
2675 | find(const _Tp& __svt, size_type __pos = 0) const |
2676 | noexcept(is_same<_Tp, __sv_type>::value) |
2677 | { |
2678 | __sv_type __sv = __svt; |
2679 | return this->find(__sv.data(), __pos, __sv.size()); |
2680 | } |
2681 | #endif // C++17 |
2682 | |
2683 | /** |
2684 | * @brief Find position of a C string. |
2685 | * @param __s C string to locate. |
2686 | * @param __pos Index of character to search from (default 0). |
2687 | * @return Index of start of first occurrence. |
2688 | * |
2689 | * Starting from @a __pos, searches forward for the value of @a |
2690 | * __s within this string. If found, returns the index where |
2691 | * it begins. If not found, returns npos. |
2692 | */ |
2693 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
2694 | size_type |
2695 | find(const _CharT* __s, size_type __pos = 0) const _GLIBCXX_NOEXCEPT |
2696 | { |
2697 | __glibcxx_requires_string(__s); |
2698 | return this->find(__s, __pos, traits_type::length(__s)); |
2699 | } |
2700 | |
2701 | /** |
2702 | * @brief Find position of a character. |
2703 | * @param __c Character to locate. |
2704 | * @param __pos Index of character to search from (default 0). |
2705 | * @return Index of first occurrence. |
2706 | * |
2707 | * Starting from @a __pos, searches forward for @a __c within |
2708 | * this string. If found, returns the index where it was |
2709 | * found. If not found, returns npos. |
2710 | */ |
2711 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
2712 | size_type |
2713 | find(_CharT __c, size_type __pos = 0) const _GLIBCXX_NOEXCEPT; |
2714 | |
2715 | /** |
2716 | * @brief Find last position of a string. |
2717 | * @param __str String to locate. |
2718 | * @param __pos Index of character to search back from (default end). |
2719 | * @return Index of start of last occurrence. |
2720 | * |
2721 | * Starting from @a __pos, searches backward for value of @a |
2722 | * __str within this string. If found, returns the index where |
2723 | * it begins. If not found, returns npos. |
2724 | */ |
2725 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
2726 | size_type |
2727 | rfind(const basic_string& __str, size_type __pos = npos) const |
2728 | _GLIBCXX_NOEXCEPT |
2729 | { return this->rfind(__str.data(), __pos, __str.size()); } |
2730 | |
2731 | #if __cplusplus >= 201703L |
2732 | /** |
2733 | * @brief Find last position of a string_view. |
2734 | * @param __svt The object convertible to string_view to locate. |
2735 | * @param __pos Index of character to search back from (default end). |
2736 | * @return Index of start of last occurrence. |
2737 | */ |
2738 | template<typename _Tp> |
2739 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
2740 | _If_sv<_Tp, size_type> |
2741 | rfind(const _Tp& __svt, size_type __pos = npos) const |
2742 | noexcept(is_same<_Tp, __sv_type>::value) |
2743 | { |
2744 | __sv_type __sv = __svt; |
2745 | return this->rfind(__sv.data(), __pos, __sv.size()); |
2746 | } |
2747 | #endif // C++17 |
2748 | |
2749 | /** |
2750 | * @brief Find last position of a C substring. |
2751 | * @param __s C string to locate. |
2752 | * @param __pos Index of character to search back from. |
2753 | * @param __n Number of characters from s to search for. |
2754 | * @return Index of start of last occurrence. |
2755 | * |
2756 | * Starting from @a __pos, searches backward for the first @a |
2757 | * __n characters in @a __s within this string. If found, |
2758 | * returns the index where it begins. If not found, returns |
2759 | * npos. |
2760 | */ |
2761 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
2762 | size_type |
2763 | rfind(const _CharT* __s, size_type __pos, size_type __n) const |
2764 | _GLIBCXX_NOEXCEPT; |
2765 | |
2766 | /** |
2767 | * @brief Find last position of a C string. |
2768 | * @param __s C string to locate. |
2769 | * @param __pos Index of character to start search at (default end). |
2770 | * @return Index of start of last occurrence. |
2771 | * |
2772 | * Starting from @a __pos, searches backward for the value of |
2773 | * @a __s within this string. If found, returns the index |
2774 | * where it begins. If not found, returns npos. |
2775 | */ |
2776 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
2777 | size_type |
2778 | rfind(const _CharT* __s, size_type __pos = npos) const |
2779 | { |
2780 | __glibcxx_requires_string(__s); |
2781 | return this->rfind(__s, __pos, traits_type::length(__s)); |
2782 | } |
2783 | |
2784 | /** |
2785 | * @brief Find last position of a character. |
2786 | * @param __c Character to locate. |
2787 | * @param __pos Index of character to search back from (default end). |
2788 | * @return Index of last occurrence. |
2789 | * |
2790 | * Starting from @a __pos, searches backward for @a __c within |
2791 | * this string. If found, returns the index where it was |
2792 | * found. If not found, returns npos. |
2793 | */ |
2794 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
2795 | size_type |
2796 | rfind(_CharT __c, size_type __pos = npos) const _GLIBCXX_NOEXCEPT; |
2797 | |
2798 | /** |
2799 | * @brief Find position of a character of string. |
2800 | * @param __str String containing characters to locate. |
2801 | * @param __pos Index of character to search from (default 0). |
2802 | * @return Index of first occurrence. |
2803 | * |
2804 | * Starting from @a __pos, searches forward for one of the |
2805 | * characters of @a __str within this string. If found, |
2806 | * returns the index where it was found. If not found, returns |
2807 | * npos. |
2808 | */ |
2809 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
2810 | size_type |
2811 | find_first_of(const basic_string& __str, size_type __pos = 0) const |
2812 | _GLIBCXX_NOEXCEPT |
2813 | { return this->find_first_of(__str.data(), __pos, __str.size()); } |
2814 | |
2815 | #if __cplusplus >= 201703L |
2816 | /** |
2817 | * @brief Find position of a character of a string_view. |
2818 | * @param __svt An object convertible to string_view containing |
2819 | * characters to locate. |
2820 | * @param __pos Index of character to search from (default 0). |
2821 | * @return Index of first occurrence. |
2822 | */ |
2823 | template<typename _Tp> |
2824 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
2825 | _If_sv<_Tp, size_type> |
2826 | find_first_of(const _Tp& __svt, size_type __pos = 0) const |
2827 | noexcept(is_same<_Tp, __sv_type>::value) |
2828 | { |
2829 | __sv_type __sv = __svt; |
2830 | return this->find_first_of(__sv.data(), __pos, __sv.size()); |
2831 | } |
2832 | #endif // C++17 |
2833 | |
2834 | /** |
2835 | * @brief Find position of a character of C substring. |
2836 | * @param __s String containing characters to locate. |
2837 | * @param __pos Index of character to search from. |
2838 | * @param __n Number of characters from s to search for. |
2839 | * @return Index of first occurrence. |
2840 | * |
2841 | * Starting from @a __pos, searches forward for one of the |
2842 | * first @a __n characters of @a __s within this string. If |
2843 | * found, returns the index where it was found. If not found, |
2844 | * returns npos. |
2845 | */ |
2846 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
2847 | size_type |
2848 | find_first_of(const _CharT* __s, size_type __pos, size_type __n) const |
2849 | _GLIBCXX_NOEXCEPT; |
2850 | |
2851 | /** |
2852 | * @brief Find position of a character of C string. |
2853 | * @param __s String containing characters to locate. |
2854 | * @param __pos Index of character to search from (default 0). |
2855 | * @return Index of first occurrence. |
2856 | * |
2857 | * Starting from @a __pos, searches forward for one of the |
2858 | * characters of @a __s within this string. If found, returns |
2859 | * the index where it was found. If not found, returns npos. |
2860 | */ |
2861 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
2862 | size_type |
2863 | find_first_of(const _CharT* __s, size_type __pos = 0) const |
2864 | _GLIBCXX_NOEXCEPT |
2865 | { |
2866 | __glibcxx_requires_string(__s); |
2867 | return this->find_first_of(__s, __pos, traits_type::length(__s)); |
2868 | } |
2869 | |
2870 | /** |
2871 | * @brief Find position of a character. |
2872 | * @param __c Character to locate. |
2873 | * @param __pos Index of character to search from (default 0). |
2874 | * @return Index of first occurrence. |
2875 | * |
2876 | * Starting from @a __pos, searches forward for the character |
2877 | * @a __c within this string. If found, returns the index |
2878 | * where it was found. If not found, returns npos. |
2879 | * |
2880 | * Note: equivalent to find(__c, __pos). |
2881 | */ |
2882 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
2883 | size_type |
2884 | find_first_of(_CharT __c, size_type __pos = 0) const _GLIBCXX_NOEXCEPT |
2885 | { return this->find(__c, __pos); } |
2886 | |
2887 | /** |
2888 | * @brief Find last position of a character of string. |
2889 | * @param __str String containing characters to locate. |
2890 | * @param __pos Index of character to search back from (default end). |
2891 | * @return Index of last occurrence. |
2892 | * |
2893 | * Starting from @a __pos, searches backward for one of the |
2894 | * characters of @a __str within this string. If found, |
2895 | * returns the index where it was found. If not found, returns |
2896 | * npos. |
2897 | */ |
2898 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
2899 | size_type |
2900 | find_last_of(const basic_string& __str, size_type __pos = npos) const |
2901 | _GLIBCXX_NOEXCEPT |
2902 | { return this->find_last_of(__str.data(), __pos, __str.size()); } |
2903 | |
2904 | #if __cplusplus >= 201703L |
2905 | /** |
2906 | * @brief Find last position of a character of string. |
2907 | * @param __svt An object convertible to string_view containing |
2908 | * characters to locate. |
2909 | * @param __pos Index of character to search back from (default end). |
2910 | * @return Index of last occurrence. |
2911 | */ |
2912 | template<typename _Tp> |
2913 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
2914 | _If_sv<_Tp, size_type> |
2915 | find_last_of(const _Tp& __svt, size_type __pos = npos) const |
2916 | noexcept(is_same<_Tp, __sv_type>::value) |
2917 | { |
2918 | __sv_type __sv = __svt; |
2919 | return this->find_last_of(__sv.data(), __pos, __sv.size()); |
2920 | } |
2921 | #endif // C++17 |
2922 | |
2923 | /** |
2924 | * @brief Find last position of a character of C substring. |
2925 | * @param __s C string containing characters to locate. |
2926 | * @param __pos Index of character to search back from. |
2927 | * @param __n Number of characters from s to search for. |
2928 | * @return Index of last occurrence. |
2929 | * |
2930 | * Starting from @a __pos, searches backward for one of the |
2931 | * first @a __n characters of @a __s within this string. If |
2932 | * found, returns the index where it was found. If not found, |
2933 | * returns npos. |
2934 | */ |
2935 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
2936 | size_type |
2937 | find_last_of(const _CharT* __s, size_type __pos, size_type __n) const |
2938 | _GLIBCXX_NOEXCEPT; |
2939 | |
2940 | /** |
2941 | * @brief Find last position of a character of C string. |
2942 | * @param __s C string containing characters to locate. |
2943 | * @param __pos Index of character to search back from (default end). |
2944 | * @return Index of last occurrence. |
2945 | * |
2946 | * Starting from @a __pos, searches backward for one of the |
2947 | * characters of @a __s within this string. If found, returns |
2948 | * the index where it was found. If not found, returns npos. |
2949 | */ |
2950 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
2951 | size_type |
2952 | find_last_of(const _CharT* __s, size_type __pos = npos) const |
2953 | _GLIBCXX_NOEXCEPT |
2954 | { |
2955 | __glibcxx_requires_string(__s); |
2956 | return this->find_last_of(__s, __pos, traits_type::length(__s)); |
2957 | } |
2958 | |
2959 | /** |
2960 | * @brief Find last position of a character. |
2961 | * @param __c Character to locate. |
2962 | * @param __pos Index of character to search back from (default end). |
2963 | * @return Index of last occurrence. |
2964 | * |
2965 | * Starting from @a __pos, searches backward for @a __c within |
2966 | * this string. If found, returns the index where it was |
2967 | * found. If not found, returns npos. |
2968 | * |
2969 | * Note: equivalent to rfind(__c, __pos). |
2970 | */ |
2971 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
2972 | size_type |
2973 | find_last_of(_CharT __c, size_type __pos = npos) const _GLIBCXX_NOEXCEPT |
2974 | { return this->rfind(__c, __pos); } |
2975 | |
2976 | /** |
2977 | * @brief Find position of a character not in string. |
2978 | * @param __str String containing characters to avoid. |
2979 | * @param __pos Index of character to search from (default 0). |
2980 | * @return Index of first occurrence. |
2981 | * |
2982 | * Starting from @a __pos, searches forward for a character not contained |
2983 | * in @a __str within this string. If found, returns the index where it |
2984 | * was found. If not found, returns npos. |
2985 | */ |
2986 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
2987 | size_type |
2988 | find_first_not_of(const basic_string& __str, size_type __pos = 0) const |
2989 | _GLIBCXX_NOEXCEPT |
2990 | { return this->find_first_not_of(__str.data(), __pos, __str.size()); } |
2991 | |
2992 | #if __cplusplus >= 201703L |
2993 | /** |
2994 | * @brief Find position of a character not in a string_view. |
2995 | * @param __svt A object convertible to string_view containing |
2996 | * characters to avoid. |
2997 | * @param __pos Index of character to search from (default 0). |
2998 | * @return Index of first occurrence. |
2999 | */ |
3000 | template<typename _Tp> |
3001 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
3002 | _If_sv<_Tp, size_type> |
3003 | find_first_not_of(const _Tp& __svt, size_type __pos = 0) const |
3004 | noexcept(is_same<_Tp, __sv_type>::value) |
3005 | { |
3006 | __sv_type __sv = __svt; |
3007 | return this->find_first_not_of(__sv.data(), __pos, __sv.size()); |
3008 | } |
3009 | #endif // C++17 |
3010 | |
3011 | /** |
3012 | * @brief Find position of a character not in C substring. |
3013 | * @param __s C string containing characters to avoid. |
3014 | * @param __pos Index of character to search from. |
3015 | * @param __n Number of characters from __s to consider. |
3016 | * @return Index of first occurrence. |
3017 | * |
3018 | * Starting from @a __pos, searches forward for a character not |
3019 | * contained in the first @a __n characters of @a __s within |
3020 | * this string. If found, returns the index where it was |
3021 | * found. If not found, returns npos. |
3022 | */ |
3023 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
3024 | size_type |
3025 | find_first_not_of(const _CharT* __s, size_type __pos, |
3026 | size_type __n) const _GLIBCXX_NOEXCEPT; |
3027 | |
3028 | /** |
3029 | * @brief Find position of a character not in C string. |
3030 | * @param __s C string containing characters to avoid. |
3031 | * @param __pos Index of character to search from (default 0). |
3032 | * @return Index of first occurrence. |
3033 | * |
3034 | * Starting from @a __pos, searches forward for a character not |
3035 | * contained in @a __s within this string. If found, returns |
3036 | * the index where it was found. If not found, returns npos. |
3037 | */ |
3038 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
3039 | size_type |
3040 | find_first_not_of(const _CharT* __s, size_type __pos = 0) const |
3041 | _GLIBCXX_NOEXCEPT |
3042 | { |
3043 | __glibcxx_requires_string(__s); |
3044 | return this->find_first_not_of(__s, __pos, traits_type::length(__s)); |
3045 | } |
3046 | |
3047 | /** |
3048 | * @brief Find position of a different character. |
3049 | * @param __c Character to avoid. |
3050 | * @param __pos Index of character to search from (default 0). |
3051 | * @return Index of first occurrence. |
3052 | * |
3053 | * Starting from @a __pos, searches forward for a character |
3054 | * other than @a __c within this string. If found, returns the |
3055 | * index where it was found. If not found, returns npos. |
3056 | */ |
3057 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
3058 | size_type |
3059 | find_first_not_of(_CharT __c, size_type __pos = 0) const |
3060 | _GLIBCXX_NOEXCEPT; |
3061 | |
3062 | /** |
3063 | * @brief Find last position of a character not in string. |
3064 | * @param __str String containing characters to avoid. |
3065 | * @param __pos Index of character to search back from (default end). |
3066 | * @return Index of last occurrence. |
3067 | * |
3068 | * Starting from @a __pos, searches backward for a character |
3069 | * not contained in @a __str within this string. If found, |
3070 | * returns the index where it was found. If not found, returns |
3071 | * npos. |
3072 | */ |
3073 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
3074 | size_type |
3075 | find_last_not_of(const basic_string& __str, size_type __pos = npos) const |
3076 | _GLIBCXX_NOEXCEPT |
3077 | { return this->find_last_not_of(__str.data(), __pos, __str.size()); } |
3078 | |
3079 | #if __cplusplus >= 201703L |
3080 | /** |
3081 | * @brief Find last position of a character not in a string_view. |
3082 | * @param __svt An object convertible to string_view containing |
3083 | * characters to avoid. |
3084 | * @param __pos Index of character to search back from (default end). |
3085 | * @return Index of last occurrence. |
3086 | */ |
3087 | template<typename _Tp> |
3088 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
3089 | _If_sv<_Tp, size_type> |
3090 | find_last_not_of(const _Tp& __svt, size_type __pos = npos) const |
3091 | noexcept(is_same<_Tp, __sv_type>::value) |
3092 | { |
3093 | __sv_type __sv = __svt; |
3094 | return this->find_last_not_of(__sv.data(), __pos, __sv.size()); |
3095 | } |
3096 | #endif // C++17 |
3097 | |
3098 | /** |
3099 | * @brief Find last position of a character not in C substring. |
3100 | * @param __s C string containing characters to avoid. |
3101 | * @param __pos Index of character to search back from. |
3102 | * @param __n Number of characters from s to consider. |
3103 | * @return Index of last occurrence. |
3104 | * |
3105 | * Starting from @a __pos, searches backward for a character not |
3106 | * contained in the first @a __n characters of @a __s within this string. |
3107 | * If found, returns the index where it was found. If not found, |
3108 | * returns npos. |
3109 | */ |
3110 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
3111 | size_type |
3112 | find_last_not_of(const _CharT* __s, size_type __pos, |
3113 | size_type __n) const _GLIBCXX_NOEXCEPT; |
3114 | /** |
3115 | * @brief Find last position of a character not in C string. |
3116 | * @param __s C string containing characters to avoid. |
3117 | * @param __pos Index of character to search back from (default end). |
3118 | * @return Index of last occurrence. |
3119 | * |
3120 | * Starting from @a __pos, searches backward for a character |
3121 | * not contained in @a __s within this string. If found, |
3122 | * returns the index where it was found. If not found, returns |
3123 | * npos. |
3124 | */ |
3125 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
3126 | size_type |
3127 | find_last_not_of(const _CharT* __s, size_type __pos = npos) const |
3128 | _GLIBCXX_NOEXCEPT |
3129 | { |
3130 | __glibcxx_requires_string(__s); |
3131 | return this->find_last_not_of(__s, __pos, traits_type::length(__s)); |
3132 | } |
3133 | |
3134 | /** |
3135 | * @brief Find last position of a different character. |
3136 | * @param __c Character to avoid. |
3137 | * @param __pos Index of character to search back from (default end). |
3138 | * @return Index of last occurrence. |
3139 | * |
3140 | * Starting from @a __pos, searches backward for a character other than |
3141 | * @a __c within this string. If found, returns the index where it was |
3142 | * found. If not found, returns npos. |
3143 | */ |
3144 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
3145 | size_type |
3146 | find_last_not_of(_CharT __c, size_type __pos = npos) const |
3147 | _GLIBCXX_NOEXCEPT; |
3148 | |
3149 | /** |
3150 | * @brief Get a substring. |
3151 | * @param __pos Index of first character (default 0). |
3152 | * @param __n Number of characters in substring (default remainder). |
3153 | * @return The new string. |
3154 | * @throw std::out_of_range If __pos > size(). |
3155 | * |
3156 | * Construct and return a new string using the @a __n |
3157 | * characters starting at @a __pos. If the string is too |
3158 | * short, use the remainder of the characters. If @a __pos is |
3159 | * beyond the end of the string, out_of_range is thrown. |
3160 | */ |
3161 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
3162 | basic_string |
3163 | substr(size_type __pos = 0, size_type __n = npos) const |
3164 | { return basic_string(*this, |
3165 | _M_check(__pos, s: "basic_string::substr" ), __n); } |
3166 | |
3167 | /** |
3168 | * @brief Compare to a string. |
3169 | * @param __str String to compare against. |
3170 | * @return Integer < 0, 0, or > 0. |
3171 | * |
3172 | * Returns an integer < 0 if this string is ordered before @a |
3173 | * __str, 0 if their values are equivalent, or > 0 if this |
3174 | * string is ordered after @a __str. Determines the effective |
3175 | * length rlen of the strings to compare as the smallest of |
3176 | * size() and str.size(). The function then compares the two |
3177 | * strings by calling traits::compare(data(), str.data(),rlen). |
3178 | * If the result of the comparison is nonzero returns it, |
3179 | * otherwise the shorter one is ordered first. |
3180 | */ |
3181 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
3182 | int |
3183 | compare(const basic_string& __str) const |
3184 | { |
3185 | const size_type __size = this->size(); |
3186 | const size_type __osize = __str.size(); |
3187 | const size_type __len = std::min(__size, __osize); |
3188 | |
3189 | int __r = traits_type::compare(_M_data(), __str.data(), __len); |
3190 | if (!__r) |
3191 | __r = _S_compare(n1: __size, n2: __osize); |
3192 | return __r; |
3193 | } |
3194 | |
3195 | #if __cplusplus >= 201703L |
3196 | /** |
3197 | * @brief Compare to a string_view. |
3198 | * @param __svt An object convertible to string_view to compare against. |
3199 | * @return Integer < 0, 0, or > 0. |
3200 | */ |
3201 | template<typename _Tp> |
3202 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
3203 | _If_sv<_Tp, int> |
3204 | compare(const _Tp& __svt) const |
3205 | noexcept(is_same<_Tp, __sv_type>::value) |
3206 | { |
3207 | __sv_type __sv = __svt; |
3208 | const size_type __size = this->size(); |
3209 | const size_type __osize = __sv.size(); |
3210 | const size_type __len = std::min(__size, __osize); |
3211 | |
3212 | int __r = traits_type::compare(_M_data(), __sv.data(), __len); |
3213 | if (!__r) |
3214 | __r = _S_compare(n1: __size, n2: __osize); |
3215 | return __r; |
3216 | } |
3217 | |
3218 | /** |
3219 | * @brief Compare to a string_view. |
3220 | * @param __pos A position in the string to start comparing from. |
3221 | * @param __n The number of characters to compare. |
3222 | * @param __svt An object convertible to string_view to compare |
3223 | * against. |
3224 | * @return Integer < 0, 0, or > 0. |
3225 | */ |
3226 | template<typename _Tp> |
3227 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
3228 | _If_sv<_Tp, int> |
3229 | compare(size_type __pos, size_type __n, const _Tp& __svt) const |
3230 | noexcept(is_same<_Tp, __sv_type>::value) |
3231 | { |
3232 | __sv_type __sv = __svt; |
3233 | return __sv_type(*this).substr(__pos, __n).compare(__sv); |
3234 | } |
3235 | |
3236 | /** |
3237 | * @brief Compare to a string_view. |
3238 | * @param __pos1 A position in the string to start comparing from. |
3239 | * @param __n1 The number of characters to compare. |
3240 | * @param __svt An object convertible to string_view to compare |
3241 | * against. |
3242 | * @param __pos2 A position in the string_view to start comparing from. |
3243 | * @param __n2 The number of characters to compare. |
3244 | * @return Integer < 0, 0, or > 0. |
3245 | */ |
3246 | template<typename _Tp> |
3247 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
3248 | _If_sv<_Tp, int> |
3249 | compare(size_type __pos1, size_type __n1, const _Tp& __svt, |
3250 | size_type __pos2, size_type __n2 = npos) const |
3251 | noexcept(is_same<_Tp, __sv_type>::value) |
3252 | { |
3253 | __sv_type __sv = __svt; |
3254 | return __sv_type(*this) |
3255 | .substr(__pos1, __n1).compare(__sv.substr(__pos2, __n2)); |
3256 | } |
3257 | #endif // C++17 |
3258 | |
3259 | /** |
3260 | * @brief Compare substring to a string. |
3261 | * @param __pos Index of first character of substring. |
3262 | * @param __n Number of characters in substring. |
3263 | * @param __str String to compare against. |
3264 | * @return Integer < 0, 0, or > 0. |
3265 | * |
3266 | * Form the substring of this string from the @a __n characters |
3267 | * starting at @a __pos. Returns an integer < 0 if the |
3268 | * substring is ordered before @a __str, 0 if their values are |
3269 | * equivalent, or > 0 if the substring is ordered after @a |
3270 | * __str. Determines the effective length rlen of the strings |
3271 | * to compare as the smallest of the length of the substring |
3272 | * and @a __str.size(). The function then compares the two |
3273 | * strings by calling |
3274 | * traits::compare(substring.data(),str.data(),rlen). If the |
3275 | * result of the comparison is nonzero returns it, otherwise |
3276 | * the shorter one is ordered first. |
3277 | */ |
3278 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
3279 | int |
3280 | compare(size_type __pos, size_type __n, const basic_string& __str) const |
3281 | { |
3282 | _M_check(__pos, s: "basic_string::compare" ); |
3283 | __n = _M_limit(__pos, off: __n); |
3284 | const size_type __osize = __str.size(); |
3285 | const size_type __len = std::min(__n, __osize); |
3286 | int __r = traits_type::compare(_M_data() + __pos, __str.data(), __len); |
3287 | if (!__r) |
3288 | __r = _S_compare(n1: __n, n2: __osize); |
3289 | return __r; |
3290 | } |
3291 | |
3292 | /** |
3293 | * @brief Compare substring to a substring. |
3294 | * @param __pos1 Index of first character of substring. |
3295 | * @param __n1 Number of characters in substring. |
3296 | * @param __str String to compare against. |
3297 | * @param __pos2 Index of first character of substring of str. |
3298 | * @param __n2 Number of characters in substring of str. |
3299 | * @return Integer < 0, 0, or > 0. |
3300 | * |
3301 | * Form the substring of this string from the @a __n1 |
3302 | * characters starting at @a __pos1. Form the substring of @a |
3303 | * __str from the @a __n2 characters starting at @a __pos2. |
3304 | * Returns an integer < 0 if this substring is ordered before |
3305 | * the substring of @a __str, 0 if their values are equivalent, |
3306 | * or > 0 if this substring is ordered after the substring of |
3307 | * @a __str. Determines the effective length rlen of the |
3308 | * strings to compare as the smallest of the lengths of the |
3309 | * substrings. The function then compares the two strings by |
3310 | * calling |
3311 | * traits::compare(substring.data(),str.substr(pos2,n2).data(),rlen). |
3312 | * If the result of the comparison is nonzero returns it, |
3313 | * otherwise the shorter one is ordered first. |
3314 | */ |
3315 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
3316 | int |
3317 | compare(size_type __pos1, size_type __n1, const basic_string& __str, |
3318 | size_type __pos2, size_type __n2 = npos) const |
3319 | { |
3320 | _M_check(pos: __pos1, s: "basic_string::compare" ); |
3321 | __str._M_check(__pos2, "basic_string::compare" ); |
3322 | __n1 = _M_limit(pos: __pos1, off: __n1); |
3323 | __n2 = __str._M_limit(__pos2, __n2); |
3324 | const size_type __len = std::min(__n1, __n2); |
3325 | int __r = traits_type::compare(_M_data() + __pos1, |
3326 | __str.data() + __pos2, __len); |
3327 | if (!__r) |
3328 | __r = _S_compare(__n1, __n2); |
3329 | return __r; |
3330 | } |
3331 | |
3332 | /** |
3333 | * @brief Compare to a C string. |
3334 | * @param __s C string to compare against. |
3335 | * @return Integer < 0, 0, or > 0. |
3336 | * |
3337 | * Returns an integer < 0 if this string is ordered before @a __s, 0 if |
3338 | * their values are equivalent, or > 0 if this string is ordered after |
3339 | * @a __s. Determines the effective length rlen of the strings to |
3340 | * compare as the smallest of size() and the length of a string |
3341 | * constructed from @a __s. The function then compares the two strings |
3342 | * by calling traits::compare(data(),s,rlen). If the result of the |
3343 | * comparison is nonzero returns it, otherwise the shorter one is |
3344 | * ordered first. |
3345 | */ |
3346 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
3347 | int |
3348 | compare(const _CharT* __s) const _GLIBCXX_NOEXCEPT |
3349 | { |
3350 | __glibcxx_requires_string(__s); |
3351 | const size_type __size = this->size(); |
3352 | const size_type __osize = traits_type::length(__s); |
3353 | const size_type __len = std::min(__size, __osize); |
3354 | int __r = traits_type::compare(_M_data(), __s, __len); |
3355 | if (!__r) |
3356 | __r = _S_compare(n1: __size, n2: __osize); |
3357 | return __r; |
3358 | } |
3359 | |
3360 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
3361 | // 5 String::compare specification questionable |
3362 | /** |
3363 | * @brief Compare substring to a C string. |
3364 | * @param __pos Index of first character of substring. |
3365 | * @param __n1 Number of characters in substring. |
3366 | * @param __s C string to compare against. |
3367 | * @return Integer < 0, 0, or > 0. |
3368 | * |
3369 | * Form the substring of this string from the @a __n1 |
3370 | * characters starting at @a pos. Returns an integer < 0 if |
3371 | * the substring is ordered before @a __s, 0 if their values |
3372 | * are equivalent, or > 0 if the substring is ordered after @a |
3373 | * __s. Determines the effective length rlen of the strings to |
3374 | * compare as the smallest of the length of the substring and |
3375 | * the length of a string constructed from @a __s. The |
3376 | * function then compares the two string by calling |
3377 | * traits::compare(substring.data(),__s,rlen). If the result of |
3378 | * the comparison is nonzero returns it, otherwise the shorter |
3379 | * one is ordered first. |
3380 | */ |
3381 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
3382 | int |
3383 | compare(size_type __pos, size_type __n1, const _CharT* __s) const |
3384 | { |
3385 | __glibcxx_requires_string(__s); |
3386 | _M_check(__pos, s: "basic_string::compare" ); |
3387 | __n1 = _M_limit(__pos, off: __n1); |
3388 | const size_type __osize = traits_type::length(__s); |
3389 | const size_type __len = std::min(__n1, __osize); |
3390 | int __r = traits_type::compare(_M_data() + __pos, __s, __len); |
3391 | if (!__r) |
3392 | __r = _S_compare(__n1, n2: __osize); |
3393 | return __r; |
3394 | } |
3395 | |
3396 | /** |
3397 | * @brief Compare substring against a character %array. |
3398 | * @param __pos Index of first character of substring. |
3399 | * @param __n1 Number of characters in substring. |
3400 | * @param __s character %array to compare against. |
3401 | * @param __n2 Number of characters of s. |
3402 | * @return Integer < 0, 0, or > 0. |
3403 | * |
3404 | * Form the substring of this string from the @a __n1 |
3405 | * characters starting at @a __pos. Form a string from the |
3406 | * first @a __n2 characters of @a __s. Returns an integer < 0 |
3407 | * if this substring is ordered before the string from @a __s, |
3408 | * 0 if their values are equivalent, or > 0 if this substring |
3409 | * is ordered after the string from @a __s. Determines the |
3410 | * effective length rlen of the strings to compare as the |
3411 | * smallest of the length of the substring and @a __n2. The |
3412 | * function then compares the two strings by calling |
3413 | * traits::compare(substring.data(),s,rlen). If the result of |
3414 | * the comparison is nonzero returns it, otherwise the shorter |
3415 | * one is ordered first. |
3416 | * |
3417 | * NB: s must have at least n2 characters, '\\0' has |
3418 | * no special meaning. |
3419 | */ |
3420 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
3421 | int |
3422 | compare(size_type __pos, size_type __n1, const _CharT* __s, |
3423 | size_type __n2) const |
3424 | { |
3425 | __glibcxx_requires_string_len(__s, __n2); |
3426 | _M_check(__pos, s: "basic_string::compare" ); |
3427 | __n1 = _M_limit(__pos, off: __n1); |
3428 | const size_type __len = std::min(__n1, __n2); |
3429 | int __r = traits_type::compare(_M_data() + __pos, __s, __len); |
3430 | if (!__r) |
3431 | __r = _S_compare(__n1, __n2); |
3432 | return __r; |
3433 | } |
3434 | |
3435 | #if __cplusplus >= 202002L |
3436 | [[nodiscard]] |
3437 | constexpr bool |
3438 | starts_with(basic_string_view<_CharT, _Traits> __x) const noexcept |
3439 | { return __sv_type(this->data(), this->size()).starts_with(__x); } |
3440 | |
3441 | [[nodiscard]] |
3442 | constexpr bool |
3443 | starts_with(_CharT __x) const noexcept |
3444 | { return __sv_type(this->data(), this->size()).starts_with(__x); } |
3445 | |
3446 | [[nodiscard, __gnu__::__nonnull__]] |
3447 | constexpr bool |
3448 | starts_with(const _CharT* __x) const noexcept |
3449 | { return __sv_type(this->data(), this->size()).starts_with(__x); } |
3450 | |
3451 | [[nodiscard]] |
3452 | constexpr bool |
3453 | ends_with(basic_string_view<_CharT, _Traits> __x) const noexcept |
3454 | { return __sv_type(this->data(), this->size()).ends_with(__x); } |
3455 | |
3456 | [[nodiscard]] |
3457 | constexpr bool |
3458 | ends_with(_CharT __x) const noexcept |
3459 | { return __sv_type(this->data(), this->size()).ends_with(__x); } |
3460 | |
3461 | [[nodiscard, __gnu__::__nonnull__]] |
3462 | constexpr bool |
3463 | ends_with(const _CharT* __x) const noexcept |
3464 | { return __sv_type(this->data(), this->size()).ends_with(__x); } |
3465 | #endif // C++20 |
3466 | |
3467 | #if __cplusplus > 202002L |
3468 | [[nodiscard]] |
3469 | constexpr bool |
3470 | contains(basic_string_view<_CharT, _Traits> __x) const noexcept |
3471 | { return __sv_type(this->data(), this->size()).contains(__x); } |
3472 | |
3473 | [[nodiscard]] |
3474 | constexpr bool |
3475 | contains(_CharT __x) const noexcept |
3476 | { return __sv_type(this->data(), this->size()).contains(__x); } |
3477 | |
3478 | [[nodiscard, __gnu__::__nonnull__]] |
3479 | constexpr bool |
3480 | contains(const _CharT* __x) const noexcept |
3481 | { return __sv_type(this->data(), this->size()).contains(__x); } |
3482 | #endif // C++23 |
3483 | |
3484 | // Allow basic_stringbuf::__xfer_bufptrs to call _M_length: |
3485 | template<typename, typename, typename> friend class basic_stringbuf; |
3486 | }; |
3487 | _GLIBCXX_END_NAMESPACE_CXX11 |
3488 | _GLIBCXX_END_NAMESPACE_VERSION |
3489 | } // namespace std |
3490 | #endif // _GLIBCXX_USE_CXX11_ABI |
3491 | |
3492 | namespace std _GLIBCXX_VISIBILITY(default) |
3493 | { |
3494 | _GLIBCXX_BEGIN_NAMESPACE_VERSION |
3495 | |
3496 | #if __cpp_deduction_guides >= 201606 |
3497 | _GLIBCXX_BEGIN_NAMESPACE_CXX11 |
3498 | template<typename _InputIterator, typename _CharT |
3499 | = typename iterator_traits<_InputIterator>::value_type, |
3500 | typename _Allocator = allocator<_CharT>, |
3501 | typename = _RequireInputIter<_InputIterator>, |
3502 | typename = _RequireAllocator<_Allocator>> |
3503 | basic_string(_InputIterator, _InputIterator, _Allocator = _Allocator()) |
3504 | -> basic_string<_CharT, char_traits<_CharT>, _Allocator>; |
3505 | |
3506 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
3507 | // 3075. basic_string needs deduction guides from basic_string_view |
3508 | template<typename _CharT, typename _Traits, |
3509 | typename _Allocator = allocator<_CharT>, |
3510 | typename = _RequireAllocator<_Allocator>> |
3511 | basic_string(basic_string_view<_CharT, _Traits>, const _Allocator& = _Allocator()) |
3512 | -> basic_string<_CharT, _Traits, _Allocator>; |
3513 | |
3514 | template<typename _CharT, typename _Traits, |
3515 | typename _Allocator = allocator<_CharT>, |
3516 | typename = _RequireAllocator<_Allocator>> |
3517 | basic_string(basic_string_view<_CharT, _Traits>, |
3518 | typename basic_string<_CharT, _Traits, _Allocator>::size_type, |
3519 | typename basic_string<_CharT, _Traits, _Allocator>::size_type, |
3520 | const _Allocator& = _Allocator()) |
3521 | -> basic_string<_CharT, _Traits, _Allocator>; |
3522 | _GLIBCXX_END_NAMESPACE_CXX11 |
3523 | #endif |
3524 | |
3525 | template<typename _Str> |
3526 | _GLIBCXX20_CONSTEXPR |
3527 | inline _Str |
3528 | __str_concat(typename _Str::value_type const* __lhs, |
3529 | typename _Str::size_type __lhs_len, |
3530 | typename _Str::value_type const* __rhs, |
3531 | typename _Str::size_type __rhs_len, |
3532 | typename _Str::allocator_type const& __a) |
3533 | { |
3534 | typedef typename _Str::allocator_type allocator_type; |
3535 | typedef __gnu_cxx::__alloc_traits<allocator_type> _Alloc_traits; |
3536 | _Str __str(_Alloc_traits::_S_select_on_copy(__a)); |
3537 | __str.reserve(__lhs_len + __rhs_len); |
3538 | __str.append(__lhs, __lhs_len); |
3539 | __str.append(__rhs, __rhs_len); |
3540 | return __str; |
3541 | } |
3542 | |
3543 | // operator+ |
3544 | /** |
3545 | * @brief Concatenate two strings. |
3546 | * @param __lhs First string. |
3547 | * @param __rhs Last string. |
3548 | * @return New string with value of @a __lhs followed by @a __rhs. |
3549 | */ |
3550 | template<typename _CharT, typename _Traits, typename _Alloc> |
3551 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
3552 | inline basic_string<_CharT, _Traits, _Alloc> |
3553 | operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs, |
3554 | const basic_string<_CharT, _Traits, _Alloc>& __rhs) |
3555 | { |
3556 | typedef basic_string<_CharT, _Traits, _Alloc> _Str; |
3557 | return std::__str_concat<_Str>(__lhs.c_str(), __lhs.size(), |
3558 | __rhs.c_str(), __rhs.size(), |
3559 | __lhs.get_allocator()); |
3560 | } |
3561 | |
3562 | /** |
3563 | * @brief Concatenate C string and string. |
3564 | * @param __lhs First string. |
3565 | * @param __rhs Last string. |
3566 | * @return New string with value of @a __lhs followed by @a __rhs. |
3567 | */ |
3568 | template<typename _CharT, typename _Traits, typename _Alloc> |
3569 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
3570 | inline basic_string<_CharT,_Traits,_Alloc> |
3571 | operator+(const _CharT* __lhs, |
3572 | const basic_string<_CharT,_Traits,_Alloc>& __rhs) |
3573 | { |
3574 | __glibcxx_requires_string(__lhs); |
3575 | typedef basic_string<_CharT, _Traits, _Alloc> _Str; |
3576 | return std::__str_concat<_Str>(__lhs, _Traits::length(__lhs), |
3577 | __rhs.c_str(), __rhs.size(), |
3578 | __rhs.get_allocator()); |
3579 | } |
3580 | |
3581 | /** |
3582 | * @brief Concatenate character and string. |
3583 | * @param __lhs First string. |
3584 | * @param __rhs Last string. |
3585 | * @return New string with @a __lhs followed by @a __rhs. |
3586 | */ |
3587 | template<typename _CharT, typename _Traits, typename _Alloc> |
3588 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
3589 | inline basic_string<_CharT,_Traits,_Alloc> |
3590 | operator+(_CharT __lhs, const basic_string<_CharT,_Traits,_Alloc>& __rhs) |
3591 | { |
3592 | typedef basic_string<_CharT, _Traits, _Alloc> _Str; |
3593 | return std::__str_concat<_Str>(__builtin_addressof(__lhs), 1, |
3594 | __rhs.c_str(), __rhs.size(), |
3595 | __rhs.get_allocator()); |
3596 | } |
3597 | |
3598 | /** |
3599 | * @brief Concatenate string and C string. |
3600 | * @param __lhs First string. |
3601 | * @param __rhs Last string. |
3602 | * @return New string with @a __lhs followed by @a __rhs. |
3603 | */ |
3604 | template<typename _CharT, typename _Traits, typename _Alloc> |
3605 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
3606 | inline basic_string<_CharT, _Traits, _Alloc> |
3607 | operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs, |
3608 | const _CharT* __rhs) |
3609 | { |
3610 | __glibcxx_requires_string(__rhs); |
3611 | typedef basic_string<_CharT, _Traits, _Alloc> _Str; |
3612 | return std::__str_concat<_Str>(__lhs.c_str(), __lhs.size(), |
3613 | __rhs, _Traits::length(__rhs), |
3614 | __lhs.get_allocator()); |
3615 | } |
3616 | /** |
3617 | * @brief Concatenate string and character. |
3618 | * @param __lhs First string. |
3619 | * @param __rhs Last string. |
3620 | * @return New string with @a __lhs followed by @a __rhs. |
3621 | */ |
3622 | template<typename _CharT, typename _Traits, typename _Alloc> |
3623 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
3624 | inline basic_string<_CharT, _Traits, _Alloc> |
3625 | operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs, _CharT __rhs) |
3626 | { |
3627 | typedef basic_string<_CharT, _Traits, _Alloc> _Str; |
3628 | return std::__str_concat<_Str>(__lhs.c_str(), __lhs.size(), |
3629 | __builtin_addressof(__rhs), 1, |
3630 | __lhs.get_allocator()); |
3631 | } |
3632 | |
3633 | #if __cplusplus >= 201103L |
3634 | template<typename _CharT, typename _Traits, typename _Alloc> |
3635 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
3636 | inline basic_string<_CharT, _Traits, _Alloc> |
3637 | operator+(basic_string<_CharT, _Traits, _Alloc>&& __lhs, |
3638 | const basic_string<_CharT, _Traits, _Alloc>& __rhs) |
3639 | { return std::move(__lhs.append(__rhs)); } |
3640 | |
3641 | template<typename _CharT, typename _Traits, typename _Alloc> |
3642 | _GLIBCXX20_CONSTEXPR |
3643 | inline basic_string<_CharT, _Traits, _Alloc> |
3644 | operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs, |
3645 | basic_string<_CharT, _Traits, _Alloc>&& __rhs) |
3646 | { return std::move(__rhs.insert(0, __lhs)); } |
3647 | |
3648 | template<typename _CharT, typename _Traits, typename _Alloc> |
3649 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
3650 | inline basic_string<_CharT, _Traits, _Alloc> |
3651 | operator+(basic_string<_CharT, _Traits, _Alloc>&& __lhs, |
3652 | basic_string<_CharT, _Traits, _Alloc>&& __rhs) |
3653 | { |
3654 | #if _GLIBCXX_USE_CXX11_ABI |
3655 | using _Alloc_traits = allocator_traits<_Alloc>; |
3656 | bool __use_rhs = false; |
3657 | if _GLIBCXX17_CONSTEXPR (typename _Alloc_traits::is_always_equal{}) |
3658 | __use_rhs = true; |
3659 | else if (__lhs.get_allocator() == __rhs.get_allocator()) |
3660 | __use_rhs = true; |
3661 | if (__use_rhs) |
3662 | #endif |
3663 | { |
3664 | const auto __size = __lhs.size() + __rhs.size(); |
3665 | if (__size > __lhs.capacity() && __size <= __rhs.capacity()) |
3666 | return std::move(__rhs.insert(0, __lhs)); |
3667 | } |
3668 | return std::move(__lhs.append(__rhs)); |
3669 | } |
3670 | |
3671 | template<typename _CharT, typename _Traits, typename _Alloc> |
3672 | _GLIBCXX_NODISCARD _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
3673 | inline basic_string<_CharT, _Traits, _Alloc> |
3674 | operator+(const _CharT* __lhs, |
3675 | basic_string<_CharT, _Traits, _Alloc>&& __rhs) |
3676 | { return std::move(__rhs.insert(0, __lhs)); } |
3677 | |
3678 | template<typename _CharT, typename _Traits, typename _Alloc> |
3679 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
3680 | inline basic_string<_CharT, _Traits, _Alloc> |
3681 | operator+(_CharT __lhs, |
3682 | basic_string<_CharT, _Traits, _Alloc>&& __rhs) |
3683 | { return std::move(__rhs.insert(0, 1, __lhs)); } |
3684 | |
3685 | template<typename _CharT, typename _Traits, typename _Alloc> |
3686 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
3687 | inline basic_string<_CharT, _Traits, _Alloc> |
3688 | operator+(basic_string<_CharT, _Traits, _Alloc>&& __lhs, |
3689 | const _CharT* __rhs) |
3690 | { return std::move(__lhs.append(__rhs)); } |
3691 | |
3692 | template<typename _CharT, typename _Traits, typename _Alloc> |
3693 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
3694 | inline basic_string<_CharT, _Traits, _Alloc> |
3695 | operator+(basic_string<_CharT, _Traits, _Alloc>&& __lhs, |
3696 | _CharT __rhs) |
3697 | { return std::move(__lhs.append(1, __rhs)); } |
3698 | #endif |
3699 | |
3700 | // operator == |
3701 | /** |
3702 | * @brief Test equivalence of two strings. |
3703 | * @param __lhs First string. |
3704 | * @param __rhs Second string. |
3705 | * @return True if @a __lhs.compare(@a __rhs) == 0. False otherwise. |
3706 | */ |
3707 | template<typename _CharT, typename _Traits, typename _Alloc> |
3708 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
3709 | inline bool |
3710 | operator==(const basic_string<_CharT, _Traits, _Alloc>& __lhs, |
3711 | const basic_string<_CharT, _Traits, _Alloc>& __rhs) |
3712 | _GLIBCXX_NOEXCEPT |
3713 | { |
3714 | return __lhs.size() == __rhs.size() |
3715 | && !_Traits::compare(__lhs.data(), __rhs.data(), __lhs.size()); |
3716 | } |
3717 | |
3718 | /** |
3719 | * @brief Test equivalence of string and C string. |
3720 | * @param __lhs String. |
3721 | * @param __rhs C string. |
3722 | * @return True if @a __lhs.compare(@a __rhs) == 0. False otherwise. |
3723 | */ |
3724 | template<typename _CharT, typename _Traits, typename _Alloc> |
3725 | _GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR |
3726 | inline bool |
3727 | operator==(const basic_string<_CharT, _Traits, _Alloc>& __lhs, |
3728 | const _CharT* __rhs) |
3729 | { |
3730 | return __lhs.size() == _Traits::length(__rhs) |
3731 | && !_Traits::compare(__lhs.data(), __rhs, __lhs.size()); |
3732 | } |
3733 | |
3734 | #if __cpp_lib_three_way_comparison |
3735 | /** |
3736 | * @brief Three-way comparison of a string and a C string. |
3737 | * @param __lhs A string. |
3738 | * @param __rhs A null-terminated string. |
3739 | * @return A value indicating whether `__lhs` is less than, equal to, |
3740 | * greater than, or incomparable with `__rhs`. |
3741 | */ |
3742 | template<typename _CharT, typename _Traits, typename _Alloc> |
3743 | [[nodiscard]] |
3744 | constexpr auto |
3745 | operator<=>(const basic_string<_CharT, _Traits, _Alloc>& __lhs, |
3746 | const basic_string<_CharT, _Traits, _Alloc>& __rhs) noexcept |
3747 | -> decltype(__detail::__char_traits_cmp_cat<_Traits>(0)) |
3748 | { return __detail::__char_traits_cmp_cat<_Traits>(__lhs.compare(__rhs)); } |
3749 | |
3750 | /** |
3751 | * @brief Three-way comparison of a string and a C string. |
3752 | * @param __lhs A string. |
3753 | * @param __rhs A null-terminated string. |
3754 | * @return A value indicating whether `__lhs` is less than, equal to, |
3755 | * greater than, or incomparable with `__rhs`. |
3756 | */ |
3757 | template<typename _CharT, typename _Traits, typename _Alloc> |
3758 | [[nodiscard]] |
3759 | constexpr auto |
3760 | operator<=>(const basic_string<_CharT, _Traits, _Alloc>& __lhs, |
3761 | const _CharT* __rhs) noexcept |
3762 | -> decltype(__detail::__char_traits_cmp_cat<_Traits>(0)) |
3763 | { return __detail::__char_traits_cmp_cat<_Traits>(__lhs.compare(__rhs)); } |
3764 | #else |
3765 | /** |
3766 | * @brief Test equivalence of C string and string. |
3767 | * @param __lhs C string. |
3768 | * @param __rhs String. |
3769 | * @return True if @a __rhs.compare(@a __lhs) == 0. False otherwise. |
3770 | */ |
3771 | template<typename _CharT, typename _Traits, typename _Alloc> |
3772 | _GLIBCXX_NODISCARD |
3773 | inline bool |
3774 | operator==(const _CharT* __lhs, |
3775 | const basic_string<_CharT, _Traits, _Alloc>& __rhs) |
3776 | { return __rhs == __lhs; } |
3777 | |
3778 | // operator != |
3779 | /** |
3780 | * @brief Test difference of two strings. |
3781 | * @param __lhs First string. |
3782 | * @param __rhs Second string. |
3783 | * @return True if @a __lhs.compare(@a __rhs) != 0. False otherwise. |
3784 | */ |
3785 | template<typename _CharT, typename _Traits, typename _Alloc> |
3786 | _GLIBCXX_NODISCARD |
3787 | inline bool |
3788 | operator!=(const basic_string<_CharT, _Traits, _Alloc>& __lhs, |
3789 | const basic_string<_CharT, _Traits, _Alloc>& __rhs) |
3790 | _GLIBCXX_NOEXCEPT |
3791 | { return !(__lhs == __rhs); } |
3792 | |
3793 | /** |
3794 | * @brief Test difference of C string and string. |
3795 | * @param __lhs C string. |
3796 | * @param __rhs String. |
3797 | * @return True if @a __rhs.compare(@a __lhs) != 0. False otherwise. |
3798 | */ |
3799 | template<typename _CharT, typename _Traits, typename _Alloc> |
3800 | _GLIBCXX_NODISCARD |
3801 | inline bool |
3802 | operator!=(const _CharT* __lhs, |
3803 | const basic_string<_CharT, _Traits, _Alloc>& __rhs) |
3804 | { return !(__rhs == __lhs); } |
3805 | |
3806 | /** |
3807 | * @brief Test difference of string and C string. |
3808 | * @param __lhs String. |
3809 | * @param __rhs C string. |
3810 | * @return True if @a __lhs.compare(@a __rhs) != 0. False otherwise. |
3811 | */ |
3812 | template<typename _CharT, typename _Traits, typename _Alloc> |
3813 | _GLIBCXX_NODISCARD |
3814 | inline bool |
3815 | operator!=(const basic_string<_CharT, _Traits, _Alloc>& __lhs, |
3816 | const _CharT* __rhs) |
3817 | { return !(__lhs == __rhs); } |
3818 | |
3819 | // operator < |
3820 | /** |
3821 | * @brief Test if string precedes string. |
3822 | * @param __lhs First string. |
3823 | * @param __rhs Second string. |
3824 | * @return True if @a __lhs precedes @a __rhs. False otherwise. |
3825 | */ |
3826 | template<typename _CharT, typename _Traits, typename _Alloc> |
3827 | _GLIBCXX_NODISCARD |
3828 | inline bool |
3829 | operator<(const basic_string<_CharT, _Traits, _Alloc>& __lhs, |
3830 | const basic_string<_CharT, _Traits, _Alloc>& __rhs) |
3831 | _GLIBCXX_NOEXCEPT |
3832 | { return __lhs.compare(__rhs) < 0; } |
3833 | |
3834 | /** |
3835 | * @brief Test if string precedes C string. |
3836 | * @param __lhs String. |
3837 | * @param __rhs C string. |
3838 | * @return True if @a __lhs precedes @a __rhs. False otherwise. |
3839 | */ |
3840 | template<typename _CharT, typename _Traits, typename _Alloc> |
3841 | _GLIBCXX_NODISCARD |
3842 | inline bool |
3843 | operator<(const basic_string<_CharT, _Traits, _Alloc>& __lhs, |
3844 | const _CharT* __rhs) |
3845 | { return __lhs.compare(__rhs) < 0; } |
3846 | |
3847 | /** |
3848 | * @brief Test if C string precedes string. |
3849 | * @param __lhs C string. |
3850 | * @param __rhs String. |
3851 | * @return True if @a __lhs precedes @a __rhs. False otherwise. |
3852 | */ |
3853 | template<typename _CharT, typename _Traits, typename _Alloc> |
3854 | _GLIBCXX_NODISCARD |
3855 | inline bool |
3856 | operator<(const _CharT* __lhs, |
3857 | const basic_string<_CharT, _Traits, _Alloc>& __rhs) |
3858 | { return __rhs.compare(__lhs) > 0; } |
3859 | |
3860 | // operator > |
3861 | /** |
3862 | * @brief Test if string follows string. |
3863 | * @param __lhs First string. |
3864 | * @param __rhs Second string. |
3865 | * @return True if @a __lhs follows @a __rhs. False otherwise. |
3866 | */ |
3867 | template<typename _CharT, typename _Traits, typename _Alloc> |
3868 | _GLIBCXX_NODISCARD |
3869 | inline bool |
3870 | operator>(const basic_string<_CharT, _Traits, _Alloc>& __lhs, |
3871 | const basic_string<_CharT, _Traits, _Alloc>& __rhs) |
3872 | _GLIBCXX_NOEXCEPT |
3873 | { return __lhs.compare(__rhs) > 0; } |
3874 | |
3875 | /** |
3876 | * @brief Test if string follows C string. |
3877 | * @param __lhs String. |
3878 | * @param __rhs C string. |
3879 | * @return True if @a __lhs follows @a __rhs. False otherwise. |
3880 | */ |
3881 | template<typename _CharT, typename _Traits, typename _Alloc> |
3882 | _GLIBCXX_NODISCARD |
3883 | inline bool |
3884 | operator>(const basic_string<_CharT, _Traits, _Alloc>& __lhs, |
3885 | const _CharT* __rhs) |
3886 | { return __lhs.compare(__rhs) > 0; } |
3887 | |
3888 | /** |
3889 | * @brief Test if C string follows string. |
3890 | * @param __lhs C string. |
3891 | * @param __rhs String. |
3892 | * @return True if @a __lhs follows @a __rhs. False otherwise. |
3893 | */ |
3894 | template<typename _CharT, typename _Traits, typename _Alloc> |
3895 | _GLIBCXX_NODISCARD |
3896 | inline bool |
3897 | operator>(const _CharT* __lhs, |
3898 | const basic_string<_CharT, _Traits, _Alloc>& __rhs) |
3899 | { return __rhs.compare(__lhs) < 0; } |
3900 | |
3901 | // operator <= |
3902 | /** |
3903 | * @brief Test if string doesn't follow string. |
3904 | * @param __lhs First string. |
3905 | * @param __rhs Second string. |
3906 | * @return True if @a __lhs doesn't follow @a __rhs. False otherwise. |
3907 | */ |
3908 | template<typename _CharT, typename _Traits, typename _Alloc> |
3909 | _GLIBCXX_NODISCARD |
3910 | inline bool |
3911 | operator<=(const basic_string<_CharT, _Traits, _Alloc>& __lhs, |
3912 | const basic_string<_CharT, _Traits, _Alloc>& __rhs) |
3913 | _GLIBCXX_NOEXCEPT |
3914 | { return __lhs.compare(__rhs) <= 0; } |
3915 | |
3916 | /** |
3917 | * @brief Test if string doesn't follow C string. |
3918 | * @param __lhs String. |
3919 | * @param __rhs C string. |
3920 | * @return True if @a __lhs doesn't follow @a __rhs. False otherwise. |
3921 | */ |
3922 | template<typename _CharT, typename _Traits, typename _Alloc> |
3923 | _GLIBCXX_NODISCARD |
3924 | inline bool |
3925 | operator<=(const basic_string<_CharT, _Traits, _Alloc>& __lhs, |
3926 | const _CharT* __rhs) |
3927 | { return __lhs.compare(__rhs) <= 0; } |
3928 | |
3929 | /** |
3930 | * @brief Test if C string doesn't follow string. |
3931 | * @param __lhs C string. |
3932 | * @param __rhs String. |
3933 | * @return True if @a __lhs doesn't follow @a __rhs. False otherwise. |
3934 | */ |
3935 | template<typename _CharT, typename _Traits, typename _Alloc> |
3936 | _GLIBCXX_NODISCARD |
3937 | inline bool |
3938 | operator<=(const _CharT* __lhs, |
3939 | const basic_string<_CharT, _Traits, _Alloc>& __rhs) |
3940 | { return __rhs.compare(__lhs) >= 0; } |
3941 | |
3942 | // operator >= |
3943 | /** |
3944 | * @brief Test if string doesn't precede string. |
3945 | * @param __lhs First string. |
3946 | * @param __rhs Second string. |
3947 | * @return True if @a __lhs doesn't precede @a __rhs. False otherwise. |
3948 | */ |
3949 | template<typename _CharT, typename _Traits, typename _Alloc> |
3950 | _GLIBCXX_NODISCARD |
3951 | inline bool |
3952 | operator>=(const basic_string<_CharT, _Traits, _Alloc>& __lhs, |
3953 | const basic_string<_CharT, _Traits, _Alloc>& __rhs) |
3954 | _GLIBCXX_NOEXCEPT |
3955 | { return __lhs.compare(__rhs) >= 0; } |
3956 | |
3957 | /** |
3958 | * @brief Test if string doesn't precede C string. |
3959 | * @param __lhs String. |
3960 | * @param __rhs C string. |
3961 | * @return True if @a __lhs doesn't precede @a __rhs. False otherwise. |
3962 | */ |
3963 | template<typename _CharT, typename _Traits, typename _Alloc> |
3964 | _GLIBCXX_NODISCARD |
3965 | inline bool |
3966 | operator>=(const basic_string<_CharT, _Traits, _Alloc>& __lhs, |
3967 | const _CharT* __rhs) |
3968 | { return __lhs.compare(__rhs) >= 0; } |
3969 | |
3970 | /** |
3971 | * @brief Test if C string doesn't precede string. |
3972 | * @param __lhs C string. |
3973 | * @param __rhs String. |
3974 | * @return True if @a __lhs doesn't precede @a __rhs. False otherwise. |
3975 | */ |
3976 | template<typename _CharT, typename _Traits, typename _Alloc> |
3977 | _GLIBCXX_NODISCARD |
3978 | inline bool |
3979 | operator>=(const _CharT* __lhs, |
3980 | const basic_string<_CharT, _Traits, _Alloc>& __rhs) |
3981 | { return __rhs.compare(__lhs) <= 0; } |
3982 | #endif // three-way comparison |
3983 | |
3984 | /** |
3985 | * @brief Swap contents of two strings. |
3986 | * @param __lhs First string. |
3987 | * @param __rhs Second string. |
3988 | * |
3989 | * Exchanges the contents of @a __lhs and @a __rhs in constant time. |
3990 | */ |
3991 | template<typename _CharT, typename _Traits, typename _Alloc> |
3992 | _GLIBCXX20_CONSTEXPR |
3993 | inline void |
3994 | swap(basic_string<_CharT, _Traits, _Alloc>& __lhs, |
3995 | basic_string<_CharT, _Traits, _Alloc>& __rhs) |
3996 | _GLIBCXX_NOEXCEPT_IF(noexcept(__lhs.swap(__rhs))) |
3997 | { __lhs.swap(__rhs); } |
3998 | |
3999 | |
4000 | /** |
4001 | * @brief Read stream into a string. |
4002 | * @param __is Input stream. |
4003 | * @param __str Buffer to store into. |
4004 | * @return Reference to the input stream. |
4005 | * |
4006 | * Stores characters from @a __is into @a __str until whitespace is |
4007 | * found, the end of the stream is encountered, or str.max_size() |
4008 | * is reached. If is.width() is non-zero, that is the limit on the |
4009 | * number of characters stored into @a __str. Any previous |
4010 | * contents of @a __str are erased. |
4011 | */ |
4012 | template<typename _CharT, typename _Traits, typename _Alloc> |
4013 | basic_istream<_CharT, _Traits>& |
4014 | operator>>(basic_istream<_CharT, _Traits>& __is, |
4015 | basic_string<_CharT, _Traits, _Alloc>& __str); |
4016 | |
4017 | template<> |
4018 | basic_istream<char>& |
4019 | operator>>(basic_istream<char>& __is, basic_string<char>& __str); |
4020 | |
4021 | /** |
4022 | * @brief Write string to a stream. |
4023 | * @param __os Output stream. |
4024 | * @param __str String to write out. |
4025 | * @return Reference to the output stream. |
4026 | * |
4027 | * Output characters of @a __str into os following the same rules as for |
4028 | * writing a C string. |
4029 | */ |
4030 | template<typename _CharT, typename _Traits, typename _Alloc> |
4031 | inline basic_ostream<_CharT, _Traits>& |
4032 | operator<<(basic_ostream<_CharT, _Traits>& __os, |
4033 | const basic_string<_CharT, _Traits, _Alloc>& __str) |
4034 | { |
4035 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
4036 | // 586. string inserter not a formatted function |
4037 | return __ostream_insert(__os, __str.data(), __str.size()); |
4038 | } |
4039 | |
4040 | /** |
4041 | * @brief Read a line from stream into a string. |
4042 | * @param __is Input stream. |
4043 | * @param __str Buffer to store into. |
4044 | * @param __delim Character marking end of line. |
4045 | * @return Reference to the input stream. |
4046 | * |
4047 | * Stores characters from @a __is into @a __str until @a __delim is |
4048 | * found, the end of the stream is encountered, or str.max_size() |
4049 | * is reached. Any previous contents of @a __str are erased. If |
4050 | * @a __delim is encountered, it is extracted but not stored into |
4051 | * @a __str. |
4052 | */ |
4053 | template<typename _CharT, typename _Traits, typename _Alloc> |
4054 | basic_istream<_CharT, _Traits>& |
4055 | getline(basic_istream<_CharT, _Traits>& __is, |
4056 | basic_string<_CharT, _Traits, _Alloc>& __str, _CharT __delim); |
4057 | |
4058 | /** |
4059 | * @brief Read a line from stream into a string. |
4060 | * @param __is Input stream. |
4061 | * @param __str Buffer to store into. |
4062 | * @return Reference to the input stream. |
4063 | * |
4064 | * Stores characters from is into @a __str until '\n' is |
4065 | * found, the end of the stream is encountered, or str.max_size() |
4066 | * is reached. Any previous contents of @a __str are erased. If |
4067 | * end of line is encountered, it is extracted but not stored into |
4068 | * @a __str. |
4069 | */ |
4070 | template<typename _CharT, typename _Traits, typename _Alloc> |
4071 | inline basic_istream<_CharT, _Traits>& |
4072 | getline(basic_istream<_CharT, _Traits>& __is, |
4073 | basic_string<_CharT, _Traits, _Alloc>& __str) |
4074 | { return std::getline(__is, __str, __is.widen('\n')); } |
4075 | |
4076 | #if __cplusplus >= 201103L |
4077 | /// Read a line from an rvalue stream into a string. |
4078 | template<typename _CharT, typename _Traits, typename _Alloc> |
4079 | inline basic_istream<_CharT, _Traits>& |
4080 | getline(basic_istream<_CharT, _Traits>&& __is, |
4081 | basic_string<_CharT, _Traits, _Alloc>& __str, _CharT __delim) |
4082 | { return std::getline(__is, __str, __delim); } |
4083 | |
4084 | /// Read a line from an rvalue stream into a string. |
4085 | template<typename _CharT, typename _Traits, typename _Alloc> |
4086 | inline basic_istream<_CharT, _Traits>& |
4087 | getline(basic_istream<_CharT, _Traits>&& __is, |
4088 | basic_string<_CharT, _Traits, _Alloc>& __str) |
4089 | { return std::getline(__is, __str); } |
4090 | #endif |
4091 | |
4092 | template<> |
4093 | basic_istream<char>& |
4094 | getline(basic_istream<char>& __in, basic_string<char>& __str, |
4095 | char __delim); |
4096 | |
4097 | #ifdef _GLIBCXX_USE_WCHAR_T |
4098 | template<> |
4099 | basic_istream<wchar_t>& |
4100 | getline(basic_istream<wchar_t>& __in, basic_string<wchar_t>& __str, |
4101 | wchar_t __delim); |
4102 | #endif |
4103 | |
4104 | _GLIBCXX_END_NAMESPACE_VERSION |
4105 | } // namespace |
4106 | |
4107 | #if __cplusplus >= 201103L |
4108 | |
4109 | #include <ext/string_conversions.h> |
4110 | #include <bits/charconv.h> |
4111 | |
4112 | namespace std _GLIBCXX_VISIBILITY(default) |
4113 | { |
4114 | _GLIBCXX_BEGIN_NAMESPACE_VERSION |
4115 | _GLIBCXX_BEGIN_NAMESPACE_CXX11 |
4116 | |
4117 | #if _GLIBCXX_USE_C99_STDLIB |
4118 | // 21.4 Numeric Conversions [string.conversions]. |
4119 | inline int |
4120 | stoi(const string& __str, size_t* __idx = 0, int __base = 10) |
4121 | { return __gnu_cxx::__stoa<long, int>(convf: &std::strtol, name: "stoi" , str: __str.c_str(), |
4122 | __idx, __base); } |
4123 | |
4124 | inline long |
4125 | stol(const string& __str, size_t* __idx = 0, int __base = 10) |
4126 | { return __gnu_cxx::__stoa(convf: &std::strtol, name: "stol" , str: __str.c_str(), |
4127 | __idx, __base); } |
4128 | |
4129 | inline unsigned long |
4130 | stoul(const string& __str, size_t* __idx = 0, int __base = 10) |
4131 | { return __gnu_cxx::__stoa(convf: &std::strtoul, name: "stoul" , str: __str.c_str(), |
4132 | __idx, __base); } |
4133 | |
4134 | inline long long |
4135 | stoll(const string& __str, size_t* __idx = 0, int __base = 10) |
4136 | { return __gnu_cxx::__stoa(convf: &std::strtoll, name: "stoll" , str: __str.c_str(), |
4137 | __idx, __base); } |
4138 | |
4139 | inline unsigned long long |
4140 | stoull(const string& __str, size_t* __idx = 0, int __base = 10) |
4141 | { return __gnu_cxx::__stoa(convf: &std::strtoull, name: "stoull" , str: __str.c_str(), |
4142 | __idx, __base); } |
4143 | |
4144 | // NB: strtof vs strtod. |
4145 | inline float |
4146 | stof(const string& __str, size_t* __idx = 0) |
4147 | { return __gnu_cxx::__stoa(convf: &std::strtof, name: "stof" , str: __str.c_str(), __idx); } |
4148 | |
4149 | inline double |
4150 | stod(const string& __str, size_t* __idx = 0) |
4151 | { return __gnu_cxx::__stoa(convf: &std::strtod, name: "stod" , str: __str.c_str(), __idx); } |
4152 | |
4153 | inline long double |
4154 | stold(const string& __str, size_t* __idx = 0) |
4155 | { return __gnu_cxx::__stoa(convf: &std::strtold, name: "stold" , str: __str.c_str(), __idx); } |
4156 | #endif // _GLIBCXX_USE_C99_STDLIB |
4157 | |
4158 | // DR 1261. Insufficent overloads for to_string / to_wstring |
4159 | |
4160 | _GLIBCXX_NODISCARD |
4161 | inline string |
4162 | to_string(int __val) |
4163 | #if _GLIBCXX_USE_CXX11_ABI && (__CHAR_BIT__ * __SIZEOF_INT__) <= 32 |
4164 | noexcept // any 32-bit value fits in the SSO buffer |
4165 | #endif |
4166 | { |
4167 | const bool __neg = __val < 0; |
4168 | const unsigned __uval = __neg ? (unsigned)~__val + 1u : __val; |
4169 | const auto __len = __detail::__to_chars_len(value: __uval); |
4170 | string __str(__neg + __len, '-'); |
4171 | __detail::__to_chars_10_impl(first: &__str[__neg], __len, val: __uval); |
4172 | return __str; |
4173 | } |
4174 | |
4175 | _GLIBCXX_NODISCARD |
4176 | inline string |
4177 | to_string(unsigned __val) |
4178 | #if _GLIBCXX_USE_CXX11_ABI && (__CHAR_BIT__ * __SIZEOF_INT__) <= 32 |
4179 | noexcept // any 32-bit value fits in the SSO buffer |
4180 | #endif |
4181 | { |
4182 | string __str(__detail::__to_chars_len(value: __val), '\0'); |
4183 | __detail::__to_chars_10_impl(first: &__str[0], len: __str.size(), __val); |
4184 | return __str; |
4185 | } |
4186 | |
4187 | _GLIBCXX_NODISCARD |
4188 | inline string |
4189 | to_string(long __val) |
4190 | #if _GLIBCXX_USE_CXX11_ABI && (__CHAR_BIT__ * __SIZEOF_LONG__) <= 32 |
4191 | noexcept // any 32-bit value fits in the SSO buffer |
4192 | #endif |
4193 | { |
4194 | const bool __neg = __val < 0; |
4195 | const unsigned long __uval = __neg ? (unsigned long)~__val + 1ul : __val; |
4196 | const auto __len = __detail::__to_chars_len(value: __uval); |
4197 | string __str(__neg + __len, '-'); |
4198 | __detail::__to_chars_10_impl(first: &__str[__neg], __len, val: __uval); |
4199 | return __str; |
4200 | } |
4201 | |
4202 | _GLIBCXX_NODISCARD |
4203 | inline string |
4204 | to_string(unsigned long __val) |
4205 | #if _GLIBCXX_USE_CXX11_ABI && (__CHAR_BIT__ * __SIZEOF_LONG__) <= 32 |
4206 | noexcept // any 32-bit value fits in the SSO buffer |
4207 | #endif |
4208 | { |
4209 | string __str(__detail::__to_chars_len(value: __val), '\0'); |
4210 | __detail::__to_chars_10_impl(first: &__str[0], len: __str.size(), __val); |
4211 | return __str; |
4212 | } |
4213 | |
4214 | _GLIBCXX_NODISCARD |
4215 | inline string |
4216 | to_string(long long __val) |
4217 | { |
4218 | const bool __neg = __val < 0; |
4219 | const unsigned long long __uval |
4220 | = __neg ? (unsigned long long)~__val + 1ull : __val; |
4221 | const auto __len = __detail::__to_chars_len(value: __uval); |
4222 | string __str(__neg + __len, '-'); |
4223 | __detail::__to_chars_10_impl(first: &__str[__neg], __len, val: __uval); |
4224 | return __str; |
4225 | } |
4226 | |
4227 | _GLIBCXX_NODISCARD |
4228 | inline string |
4229 | to_string(unsigned long long __val) |
4230 | { |
4231 | string __str(__detail::__to_chars_len(value: __val), '\0'); |
4232 | __detail::__to_chars_10_impl(first: &__str[0], len: __str.size(), __val); |
4233 | return __str; |
4234 | } |
4235 | |
4236 | #if _GLIBCXX_USE_C99_STDIO |
4237 | // NB: (v)snprintf vs sprintf. |
4238 | |
4239 | _GLIBCXX_NODISCARD |
4240 | inline string |
4241 | to_string(float __val) |
4242 | { |
4243 | const int __n = |
4244 | __gnu_cxx::__numeric_traits<float>::__max_exponent10 + 20; |
4245 | return __gnu_cxx::__to_xstring<string>(convf: &std::vsnprintf, __n, |
4246 | fmt: "%f" , __val); |
4247 | } |
4248 | |
4249 | _GLIBCXX_NODISCARD |
4250 | inline string |
4251 | to_string(double __val) |
4252 | { |
4253 | const int __n = |
4254 | __gnu_cxx::__numeric_traits<double>::__max_exponent10 + 20; |
4255 | return __gnu_cxx::__to_xstring<string>(convf: &std::vsnprintf, __n, |
4256 | fmt: "%f" , __val); |
4257 | } |
4258 | |
4259 | _GLIBCXX_NODISCARD |
4260 | inline string |
4261 | to_string(long double __val) |
4262 | { |
4263 | const int __n = |
4264 | __gnu_cxx::__numeric_traits<long double>::__max_exponent10 + 20; |
4265 | return __gnu_cxx::__to_xstring<string>(convf: &std::vsnprintf, __n, |
4266 | fmt: "%Lf" , __val); |
4267 | } |
4268 | #endif // _GLIBCXX_USE_C99_STDIO |
4269 | |
4270 | #if defined(_GLIBCXX_USE_WCHAR_T) && _GLIBCXX_USE_C99_WCHAR |
4271 | inline int |
4272 | stoi(const wstring& __str, size_t* __idx = 0, int __base = 10) |
4273 | { return __gnu_cxx::__stoa<long, int>(convf: &std::wcstol, name: "stoi" , str: __str.c_str(), |
4274 | __idx, __base); } |
4275 | |
4276 | inline long |
4277 | stol(const wstring& __str, size_t* __idx = 0, int __base = 10) |
4278 | { return __gnu_cxx::__stoa(convf: &std::wcstol, name: "stol" , str: __str.c_str(), |
4279 | __idx, __base); } |
4280 | |
4281 | inline unsigned long |
4282 | stoul(const wstring& __str, size_t* __idx = 0, int __base = 10) |
4283 | { return __gnu_cxx::__stoa(convf: &std::wcstoul, name: "stoul" , str: __str.c_str(), |
4284 | __idx, __base); } |
4285 | |
4286 | inline long long |
4287 | stoll(const wstring& __str, size_t* __idx = 0, int __base = 10) |
4288 | { return __gnu_cxx::__stoa(convf: &std::wcstoll, name: "stoll" , str: __str.c_str(), |
4289 | __idx, __base); } |
4290 | |
4291 | inline unsigned long long |
4292 | stoull(const wstring& __str, size_t* __idx = 0, int __base = 10) |
4293 | { return __gnu_cxx::__stoa(convf: &std::wcstoull, name: "stoull" , str: __str.c_str(), |
4294 | __idx, __base); } |
4295 | |
4296 | // NB: wcstof vs wcstod. |
4297 | inline float |
4298 | stof(const wstring& __str, size_t* __idx = 0) |
4299 | { return __gnu_cxx::__stoa(convf: &std::wcstof, name: "stof" , str: __str.c_str(), __idx); } |
4300 | |
4301 | inline double |
4302 | stod(const wstring& __str, size_t* __idx = 0) |
4303 | { return __gnu_cxx::__stoa(convf: &std::wcstod, name: "stod" , str: __str.c_str(), __idx); } |
4304 | |
4305 | inline long double |
4306 | stold(const wstring& __str, size_t* __idx = 0) |
4307 | { return __gnu_cxx::__stoa(convf: &std::wcstold, name: "stold" , str: __str.c_str(), __idx); } |
4308 | |
4309 | #ifndef _GLIBCXX_HAVE_BROKEN_VSWPRINTF |
4310 | // DR 1261. |
4311 | _GLIBCXX_NODISCARD |
4312 | inline wstring |
4313 | to_wstring(int __val) |
4314 | { return __gnu_cxx::__to_xstring<wstring>(convf: &std::vswprintf, n: 4 * sizeof(int), |
4315 | fmt: L"%d" , __val); } |
4316 | |
4317 | _GLIBCXX_NODISCARD |
4318 | inline wstring |
4319 | to_wstring(unsigned __val) |
4320 | { return __gnu_cxx::__to_xstring<wstring>(convf: &std::vswprintf, |
4321 | n: 4 * sizeof(unsigned), |
4322 | fmt: L"%u" , __val); } |
4323 | |
4324 | _GLIBCXX_NODISCARD |
4325 | inline wstring |
4326 | to_wstring(long __val) |
4327 | { return __gnu_cxx::__to_xstring<wstring>(convf: &std::vswprintf, n: 4 * sizeof(long), |
4328 | fmt: L"%ld" , __val); } |
4329 | |
4330 | _GLIBCXX_NODISCARD |
4331 | inline wstring |
4332 | to_wstring(unsigned long __val) |
4333 | { return __gnu_cxx::__to_xstring<wstring>(convf: &std::vswprintf, |
4334 | n: 4 * sizeof(unsigned long), |
4335 | fmt: L"%lu" , __val); } |
4336 | |
4337 | _GLIBCXX_NODISCARD |
4338 | inline wstring |
4339 | to_wstring(long long __val) |
4340 | { return __gnu_cxx::__to_xstring<wstring>(convf: &std::vswprintf, |
4341 | n: 4 * sizeof(long long), |
4342 | fmt: L"%lld" , __val); } |
4343 | |
4344 | _GLIBCXX_NODISCARD |
4345 | inline wstring |
4346 | to_wstring(unsigned long long __val) |
4347 | { return __gnu_cxx::__to_xstring<wstring>(convf: &std::vswprintf, |
4348 | n: 4 * sizeof(unsigned long long), |
4349 | fmt: L"%llu" , __val); } |
4350 | |
4351 | _GLIBCXX_NODISCARD |
4352 | inline wstring |
4353 | to_wstring(float __val) |
4354 | { |
4355 | const int __n = |
4356 | __gnu_cxx::__numeric_traits<float>::__max_exponent10 + 20; |
4357 | return __gnu_cxx::__to_xstring<wstring>(convf: &std::vswprintf, __n, |
4358 | fmt: L"%f" , __val); |
4359 | } |
4360 | |
4361 | _GLIBCXX_NODISCARD |
4362 | inline wstring |
4363 | to_wstring(double __val) |
4364 | { |
4365 | const int __n = |
4366 | __gnu_cxx::__numeric_traits<double>::__max_exponent10 + 20; |
4367 | return __gnu_cxx::__to_xstring<wstring>(convf: &std::vswprintf, __n, |
4368 | fmt: L"%f" , __val); |
4369 | } |
4370 | |
4371 | _GLIBCXX_NODISCARD |
4372 | inline wstring |
4373 | to_wstring(long double __val) |
4374 | { |
4375 | const int __n = |
4376 | __gnu_cxx::__numeric_traits<long double>::__max_exponent10 + 20; |
4377 | return __gnu_cxx::__to_xstring<wstring>(convf: &std::vswprintf, __n, |
4378 | fmt: L"%Lf" , __val); |
4379 | } |
4380 | #endif // _GLIBCXX_HAVE_BROKEN_VSWPRINTF |
4381 | #endif // _GLIBCXX_USE_WCHAR_T && _GLIBCXX_USE_C99_WCHAR |
4382 | |
4383 | _GLIBCXX_END_NAMESPACE_CXX11 |
4384 | _GLIBCXX_END_NAMESPACE_VERSION |
4385 | } // namespace |
4386 | |
4387 | #endif /* C++11 */ |
4388 | |
4389 | #if __cplusplus >= 201103L |
4390 | |
4391 | #include <bits/functional_hash.h> |
4392 | |
4393 | namespace std _GLIBCXX_VISIBILITY(default) |
4394 | { |
4395 | _GLIBCXX_BEGIN_NAMESPACE_VERSION |
4396 | |
4397 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
4398 | // 3705. Hashability shouldn't depend on basic_string's allocator |
4399 | |
4400 | template<typename _CharT, typename _Alloc, |
4401 | typename _StrT = basic_string<_CharT, char_traits<_CharT>, _Alloc>> |
4402 | struct __str_hash_base |
4403 | : public __hash_base<size_t, _StrT> |
4404 | { |
4405 | [[__nodiscard__]] |
4406 | size_t |
4407 | operator()(const _StrT& __s) const noexcept |
4408 | { return _Hash_impl::hash(__s.data(), __s.length() * sizeof(_CharT)); } |
4409 | }; |
4410 | |
4411 | #ifndef _GLIBCXX_COMPATIBILITY_CXX0X |
4412 | /// std::hash specialization for string. |
4413 | template<typename _Alloc> |
4414 | struct hash<basic_string<char, char_traits<char>, _Alloc>> |
4415 | : public __str_hash_base<char, _Alloc> |
4416 | { }; |
4417 | |
4418 | /// std::hash specialization for wstring. |
4419 | template<typename _Alloc> |
4420 | struct hash<basic_string<wchar_t, char_traits<wchar_t>, _Alloc>> |
4421 | : public __str_hash_base<wchar_t, _Alloc> |
4422 | { }; |
4423 | |
4424 | template<typename _Alloc> |
4425 | struct __is_fast_hash<hash<basic_string<wchar_t, char_traits<wchar_t>, |
4426 | _Alloc>>> |
4427 | : std::false_type |
4428 | { }; |
4429 | #endif /* _GLIBCXX_COMPATIBILITY_CXX0X */ |
4430 | |
4431 | #ifdef _GLIBCXX_USE_CHAR8_T |
4432 | /// std::hash specialization for u8string. |
4433 | template<typename _Alloc> |
4434 | struct hash<basic_string<char8_t, char_traits<char8_t>, _Alloc>> |
4435 | : public __str_hash_base<char8_t, _Alloc> |
4436 | { }; |
4437 | #endif |
4438 | |
4439 | /// std::hash specialization for u16string. |
4440 | template<typename _Alloc> |
4441 | struct hash<basic_string<char16_t, char_traits<char16_t>, _Alloc>> |
4442 | : public __str_hash_base<char16_t, _Alloc> |
4443 | { }; |
4444 | |
4445 | /// std::hash specialization for u32string. |
4446 | template<typename _Alloc> |
4447 | struct hash<basic_string<char32_t, char_traits<char32_t>, _Alloc>> |
4448 | : public __str_hash_base<char32_t, _Alloc> |
4449 | { }; |
4450 | |
4451 | #if ! _GLIBCXX_INLINE_VERSION |
4452 | // PR libstdc++/105907 - __is_fast_hash affects unordered container ABI. |
4453 | template<> struct __is_fast_hash<hash<string>> : std::false_type { }; |
4454 | template<> struct __is_fast_hash<hash<wstring>> : std::false_type { }; |
4455 | template<> struct __is_fast_hash<hash<u16string>> : std::false_type { }; |
4456 | template<> struct __is_fast_hash<hash<u32string>> : std::false_type { }; |
4457 | #ifdef _GLIBCXX_USE_CHAR8_T |
4458 | template<> struct __is_fast_hash<hash<u8string>> : std::false_type { }; |
4459 | #endif |
4460 | #else |
4461 | // For versioned namespace, assume every std::hash<basic_string<>> is slow. |
4462 | template<typename _CharT, typename _Traits, typename _Alloc> |
4463 | struct __is_fast_hash<hash<basic_string<_CharT, _Traits, _Alloc>>> |
4464 | : std::false_type |
4465 | { }; |
4466 | #endif |
4467 | |
4468 | #if __cplusplus >= 201402L |
4469 | |
4470 | #define __cpp_lib_string_udls 201304L |
4471 | |
4472 | inline namespace literals |
4473 | { |
4474 | inline namespace string_literals |
4475 | { |
4476 | #pragma GCC diagnostic push |
4477 | #pragma GCC diagnostic ignored "-Wliteral-suffix" |
4478 | |
4479 | #if __cpp_lib_constexpr_string >= 201907L |
4480 | # define _GLIBCXX_STRING_CONSTEXPR constexpr |
4481 | #else |
4482 | # define _GLIBCXX_STRING_CONSTEXPR |
4483 | #endif |
4484 | |
4485 | _GLIBCXX_DEFAULT_ABI_TAG _GLIBCXX_STRING_CONSTEXPR |
4486 | inline basic_string<char> |
4487 | operator""s (const char* __str, size_t __len) |
4488 | { return basic_string<char>{__str, __len}; } |
4489 | |
4490 | _GLIBCXX_DEFAULT_ABI_TAG _GLIBCXX_STRING_CONSTEXPR |
4491 | inline basic_string<wchar_t> |
4492 | operator""s (const wchar_t* __str, size_t __len) |
4493 | { return basic_string<wchar_t>{__str, __len}; } |
4494 | |
4495 | #ifdef _GLIBCXX_USE_CHAR8_T |
4496 | _GLIBCXX_DEFAULT_ABI_TAG _GLIBCXX_STRING_CONSTEXPR |
4497 | inline basic_string<char8_t> |
4498 | operator""s (const char8_t* __str, size_t __len) |
4499 | { return basic_string<char8_t>{__str, __len}; } |
4500 | #endif |
4501 | |
4502 | _GLIBCXX_DEFAULT_ABI_TAG _GLIBCXX_STRING_CONSTEXPR |
4503 | inline basic_string<char16_t> |
4504 | operator""s (const char16_t* __str, size_t __len) |
4505 | { return basic_string<char16_t>{__str, __len}; } |
4506 | |
4507 | _GLIBCXX_DEFAULT_ABI_TAG _GLIBCXX_STRING_CONSTEXPR |
4508 | inline basic_string<char32_t> |
4509 | operator""s (const char32_t* __str, size_t __len) |
4510 | { return basic_string<char32_t>{__str, __len}; } |
4511 | |
4512 | #undef _GLIBCXX_STRING_CONSTEXPR |
4513 | #pragma GCC diagnostic pop |
4514 | } // inline namespace string_literals |
4515 | } // inline namespace literals |
4516 | |
4517 | #if __cplusplus >= 201703L |
4518 | namespace __detail::__variant |
4519 | { |
4520 | template<typename> struct _Never_valueless_alt; // see <variant> |
4521 | |
4522 | // Provide the strong exception-safety guarantee when emplacing a |
4523 | // basic_string into a variant, but only if moving the string cannot throw. |
4524 | template<typename _Tp, typename _Traits, typename _Alloc> |
4525 | struct _Never_valueless_alt<std::basic_string<_Tp, _Traits, _Alloc>> |
4526 | : __and_< |
4527 | is_nothrow_move_constructible<std::basic_string<_Tp, _Traits, _Alloc>>, |
4528 | is_nothrow_move_assignable<std::basic_string<_Tp, _Traits, _Alloc>> |
4529 | >::type |
4530 | { }; |
4531 | } // namespace __detail::__variant |
4532 | #endif // C++17 |
4533 | #endif // C++14 |
4534 | |
4535 | _GLIBCXX_END_NAMESPACE_VERSION |
4536 | } // namespace std |
4537 | |
4538 | #endif // C++11 |
4539 | |
4540 | #endif /* _BASIC_STRING_H */ |
4541 | |