| 1 | // Components for manipulating sequences of characters -*- C++ -*- |
|---|---|
| 2 | |
| 3 | // Copyright (C) 1997-2021 Free Software Foundation, Inc. |
| 4 | // |
| 5 | // This file is part of the GNU ISO C++ Library. This library is free |
| 6 | // software; you can redistribute it and/or modify it under the |
| 7 | // terms of the GNU General Public License as published by the |
| 8 | // Free Software Foundation; either version 3, or (at your option) |
| 9 | // any later version. |
| 10 | |
| 11 | // This library is distributed in the hope that it will be useful, |
| 12 | // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | // GNU General Public License for more details. |
| 15 | |
| 16 | // Under Section 7 of GPL version 3, you are granted additional |
| 17 | // permissions described in the GCC Runtime Library Exception, version |
| 18 | // 3.1, as published by the Free Software Foundation. |
| 19 | |
| 20 | // You should have received a copy of the GNU General Public License and |
| 21 | // a copy of the GCC Runtime Library Exception along with this program; |
| 22 | // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
| 23 | // <http://www.gnu.org/licenses/>. |
| 24 | |
| 25 | /** @file bits/basic_string.h |
| 26 | * This is an internal header file, included by other library headers. |
| 27 | * Do not attempt to use it directly. @headername{string} |
| 28 | */ |
| 29 | |
| 30 | // |
| 31 | // ISO C++ 14882: 21 Strings library |
| 32 | // |
| 33 | |
| 34 | #ifndef _BASIC_STRING_H |
| 35 | #define _BASIC_STRING_H 1 |
| 36 | |
| 37 | #pragma GCC system_header |
| 38 | |
| 39 | #include <ext/atomicity.h> |
| 40 | #include <ext/alloc_traits.h> |
| 41 | #include <debug/debug.h> |
| 42 | |
| 43 | #if __cplusplus >= 201103L |
| 44 | #include <initializer_list> |
| 45 | #endif |
| 46 | |
| 47 | #if __cplusplus >= 201703L |
| 48 | # include <string_view> |
| 49 | #endif |
| 50 | |
| 51 | namespace std _GLIBCXX_VISIBILITY(default) |
| 52 | { |
| 53 | _GLIBCXX_BEGIN_NAMESPACE_VERSION |
| 54 | |
| 55 | #ifdef __cpp_lib_is_constant_evaluated |
| 56 | // Support P1032R1 in C++20 (but not P0980R1 yet). |
| 57 | # define __cpp_lib_constexpr_string 201811L |
| 58 | #elif __cplusplus >= 201703L |
| 59 | // Support P0426R1 changes to char_traits in C++17. |
| 60 | # define __cpp_lib_constexpr_string 201611L |
| 61 | #elif __cplusplus > 201703L |
| 62 | #endif |
| 63 | |
| 64 | #if _GLIBCXX_USE_CXX11_ABI |
| 65 | _GLIBCXX_BEGIN_NAMESPACE_CXX11 |
| 66 | /** |
| 67 | * @class basic_string basic_string.h <string> |
| 68 | * @brief Managing sequences of characters and character-like objects. |
| 69 | * |
| 70 | * @ingroup strings |
| 71 | * @ingroup sequences |
| 72 | * |
| 73 | * @tparam _CharT Type of character |
| 74 | * @tparam _Traits Traits for character type, defaults to |
| 75 | * char_traits<_CharT>. |
| 76 | * @tparam _Alloc Allocator type, defaults to allocator<_CharT>. |
| 77 | * |
| 78 | * Meets the requirements of a <a href="tables.html#65">container</a>, a |
| 79 | * <a href="tables.html#66">reversible container</a>, and a |
| 80 | * <a href="tables.html#67">sequence</a>. Of the |
| 81 | * <a href="tables.html#68">optional sequence requirements</a>, only |
| 82 | * @c push_back, @c at, and @c %array access are supported. |
| 83 | */ |
| 84 | template<typename _CharT, typename _Traits, typename _Alloc> |
| 85 | class basic_string |
| 86 | { |
| 87 | typedef typename __gnu_cxx::__alloc_traits<_Alloc>::template |
| 88 | rebind<_CharT>::other _Char_alloc_type; |
| 89 | typedef __gnu_cxx::__alloc_traits<_Char_alloc_type> _Alloc_traits; |
| 90 | |
| 91 | // Types: |
| 92 | public: |
| 93 | typedef _Traits traits_type; |
| 94 | typedef typename _Traits::char_type value_type; |
| 95 | typedef _Char_alloc_type allocator_type; |
| 96 | typedef typename _Alloc_traits::size_type size_type; |
| 97 | typedef typename _Alloc_traits::difference_type difference_type; |
| 98 | typedef typename _Alloc_traits::reference reference; |
| 99 | typedef typename _Alloc_traits::const_reference const_reference; |
| 100 | typedef typename _Alloc_traits::pointer pointer; |
| 101 | typedef typename _Alloc_traits::const_pointer const_pointer; |
| 102 | typedef __gnu_cxx::__normal_iterator<pointer, basic_string> iterator; |
| 103 | typedef __gnu_cxx::__normal_iterator<const_pointer, basic_string> |
| 104 | const_iterator; |
| 105 | typedef std::reverse_iterator<const_iterator> const_reverse_iterator; |
| 106 | typedef std::reverse_iterator<iterator> reverse_iterator; |
| 107 | |
| 108 | /// Value returned by various member functions when they fail. |
| 109 | static const size_type npos = static_cast<size_type>(-1); |
| 110 | |
| 111 | protected: |
| 112 | // type used for positions in insert, erase etc. |
| 113 | #if __cplusplus < 201103L |
| 114 | typedef iterator __const_iterator; |
| 115 | #else |
| 116 | typedef const_iterator __const_iterator; |
| 117 | #endif |
| 118 | |
| 119 | private: |
| 120 | #if __cplusplus >= 201703L |
| 121 | // A helper type for avoiding boiler-plate. |
| 122 | typedef basic_string_view<_CharT, _Traits> __sv_type; |
| 123 | |
| 124 | template<typename _Tp, typename _Res> |
| 125 | using _If_sv = enable_if_t< |
| 126 | __and_<is_convertible<const _Tp&, __sv_type>, |
| 127 | __not_<is_convertible<const _Tp*, const basic_string*>>, |
| 128 | __not_<is_convertible<const _Tp&, const _CharT*>>>::value, |
| 129 | _Res>; |
| 130 | |
| 131 | // Allows an implicit conversion to __sv_type. |
| 132 | static __sv_type |
| 133 | _S_to_string_view(__sv_type __svt) noexcept |
| 134 | { return __svt; } |
| 135 | |
| 136 | // Wraps a string_view by explicit conversion and thus |
| 137 | // allows to add an internal constructor that does not |
| 138 | // participate in overload resolution when a string_view |
| 139 | // is provided. |
| 140 | struct __sv_wrapper |
| 141 | { |
| 142 | explicit __sv_wrapper(__sv_type __sv) noexcept : _M_sv(__sv) { } |
| 143 | __sv_type _M_sv; |
| 144 | }; |
| 145 | |
| 146 | /** |
| 147 | * @brief Only internally used: Construct string from a string view |
| 148 | * wrapper. |
| 149 | * @param __svw string view wrapper. |
| 150 | * @param __a Allocator to use. |
| 151 | */ |
| 152 | explicit |
| 153 | basic_string(__sv_wrapper __svw, const _Alloc& __a) |
| 154 | : basic_string(__svw._M_sv.data(), __svw._M_sv.size(), __a) { } |
| 155 | #endif |
| 156 | |
| 157 | // Use empty-base optimization: http://www.cantrip.org/emptyopt.html |
| 158 | struct _Alloc_hider : allocator_type // TODO check __is_final |
| 159 | { |
| 160 | #if __cplusplus < 201103L |
| 161 | _Alloc_hider(pointer __dat, const _Alloc& __a = _Alloc()) |
| 162 | : allocator_type(__a), _M_p(__dat) { } |
| 163 | #else |
| 164 | _Alloc_hider(pointer __dat, const _Alloc& __a) |
| 165 | : allocator_type(__a), _M_p(__dat) { } |
| 166 | |
| 167 | _Alloc_hider(pointer __dat, _Alloc&& __a = _Alloc()) |
| 168 | : allocator_type(std::move(__a)), _M_p(__dat) { } |
| 169 | #endif |
| 170 | |
| 171 | pointer _M_p; // The actual data. |
| 172 | }; |
| 173 | |
| 174 | _Alloc_hider _M_dataplus; |
| 175 | size_type _M_string_length; |
| 176 | |
| 177 | enum { _S_local_capacity = 15 / sizeof(_CharT) }; |
| 178 | |
| 179 | union |
| 180 | { |
| 181 | _CharT _M_local_buf[_S_local_capacity + 1]; |
| 182 | size_type _M_allocated_capacity; |
| 183 | }; |
| 184 | |
| 185 | void |
| 186 | _M_data(pointer __p) |
| 187 | { _M_dataplus._M_p = __p; } |
| 188 | |
| 189 | void |
| 190 | _M_length(size_type __length) |
| 191 | { _M_string_length = __length; } |
| 192 | |
| 193 | pointer |
| 194 | _M_data() const |
| 195 | { return _M_dataplus._M_p; } |
| 196 | |
| 197 | pointer |
| 198 | _M_local_data() |
| 199 | { |
| 200 | #if __cplusplus >= 201103L |
| 201 | return std::pointer_traits<pointer>::pointer_to(*_M_local_buf); |
| 202 | #else |
| 203 | return pointer(_M_local_buf); |
| 204 | #endif |
| 205 | } |
| 206 | |
| 207 | const_pointer |
| 208 | _M_local_data() const |
| 209 | { |
| 210 | #if __cplusplus >= 201103L |
| 211 | return std::pointer_traits<const_pointer>::pointer_to(*_M_local_buf); |
| 212 | #else |
| 213 | return const_pointer(_M_local_buf); |
| 214 | #endif |
| 215 | } |
| 216 | |
| 217 | void |
| 218 | _M_capacity(size_type __capacity) |
| 219 | { _M_allocated_capacity = __capacity; } |
| 220 | |
| 221 | void |
| 222 | _M_set_length(size_type __n) |
| 223 | { |
| 224 | _M_length(__n); |
| 225 | traits_type::assign(_M_data()[__n], _CharT()); |
| 226 | } |
| 227 | |
| 228 | bool |
| 229 | _M_is_local() const |
| 230 | { return _M_data() == _M_local_data(); } |
| 231 | |
| 232 | // Create & Destroy |
| 233 | pointer |
| 234 | _M_create(size_type&, size_type); |
| 235 | |
| 236 | void |
| 237 | _M_dispose() |
| 238 | { |
| 239 | if (!_M_is_local()) |
| 240 | _M_destroy(_M_allocated_capacity); |
| 241 | } |
| 242 | |
| 243 | void |
| 244 | _M_destroy(size_type __size) throw() |
| 245 | { _Alloc_traits::deallocate(_M_get_allocator(), _M_data(), __size + 1); } |
| 246 | |
| 247 | // _M_construct_aux is used to implement the 21.3.1 para 15 which |
| 248 | // requires special behaviour if _InIterator is an integral type |
| 249 | template<typename _InIterator> |
| 250 | void |
| 251 | _M_construct_aux(_InIterator __beg, _InIterator __end, |
| 252 | std::__false_type) |
| 253 | { |
| 254 | typedef typename iterator_traits<_InIterator>::iterator_category _Tag; |
| 255 | _M_construct(__beg, __end, _Tag()); |
| 256 | } |
| 257 | |
| 258 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
| 259 | // 438. Ambiguity in the "do the right thing" clause |
| 260 | template<typename _Integer> |
| 261 | void |
| 262 | _M_construct_aux(_Integer __beg, _Integer __end, std::__true_type) |
| 263 | { _M_construct_aux_2(static_cast<size_type>(__beg), __end); } |
| 264 | |
| 265 | void |
| 266 | _M_construct_aux_2(size_type __req, _CharT __c) |
| 267 | { _M_construct(__req, __c); } |
| 268 | |
| 269 | template<typename _InIterator> |
| 270 | void |
| 271 | _M_construct(_InIterator __beg, _InIterator __end) |
| 272 | { |
| 273 | typedef typename std::__is_integer<_InIterator>::__type _Integral; |
| 274 | _M_construct_aux(__beg, __end, _Integral()); |
| 275 | } |
| 276 | |
| 277 | // For Input Iterators, used in istreambuf_iterators, etc. |
| 278 | template<typename _InIterator> |
| 279 | void |
| 280 | _M_construct(_InIterator __beg, _InIterator __end, |
| 281 | std::input_iterator_tag); |
| 282 | |
| 283 | // For forward_iterators up to random_access_iterators, used for |
| 284 | // string::iterator, _CharT*, etc. |
| 285 | template<typename _FwdIterator> |
| 286 | void |
| 287 | _M_construct(_FwdIterator __beg, _FwdIterator __end, |
| 288 | std::forward_iterator_tag); |
| 289 | |
| 290 | void |
| 291 | _M_construct(size_type __req, _CharT __c); |
| 292 | |
| 293 | allocator_type& |
| 294 | _M_get_allocator() |
| 295 | { return _M_dataplus; } |
| 296 | |
| 297 | const allocator_type& |
| 298 | _M_get_allocator() const |
| 299 | { return _M_dataplus; } |
| 300 | |
| 301 | private: |
| 302 | |
| 303 | #ifdef _GLIBCXX_DISAMBIGUATE_REPLACE_INST |
| 304 | // The explicit instantiations in misc-inst.cc require this due to |
| 305 | // https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64063 |
| 306 | template<typename _Tp, bool _Requires = |
| 307 | !__are_same<_Tp, _CharT*>::__value |
| 308 | && !__are_same<_Tp, const _CharT*>::__value |
| 309 | && !__are_same<_Tp, iterator>::__value |
| 310 | && !__are_same<_Tp, const_iterator>::__value> |
| 311 | struct __enable_if_not_native_iterator |
| 312 | { typedef basic_string& __type; }; |
| 313 | template<typename _Tp> |
| 314 | struct __enable_if_not_native_iterator<_Tp, false> { }; |
| 315 | #endif |
| 316 | |
| 317 | size_type |
| 318 | _M_check(size_type __pos, const char* __s) const |
| 319 | { |
| 320 | if (__pos > this->size()) |
| 321 | __throw_out_of_range_fmt(__N("%s: __pos (which is %zu) > " |
| 322 | "this->size() (which is %zu)"), |
| 323 | __s, __pos, this->size()); |
| 324 | return __pos; |
| 325 | } |
| 326 | |
| 327 | void |
| 328 | _M_check_length(size_type __n1, size_type __n2, const char* __s) const |
| 329 | { |
| 330 | if (this->max_size() - (this->size() - __n1) < __n2) |
| 331 | __throw_length_error(__N(__s)); |
| 332 | } |
| 333 | |
| 334 | |
| 335 | // NB: _M_limit doesn't check for a bad __pos value. |
| 336 | size_type |
| 337 | _M_limit(size_type __pos, size_type __off) const _GLIBCXX_NOEXCEPT |
| 338 | { |
| 339 | const bool __testoff = __off < this->size() - __pos; |
| 340 | return __testoff ? __off : this->size() - __pos; |
| 341 | } |
| 342 | |
| 343 | // True if _Rep and source do not overlap. |
| 344 | bool |
| 345 | _M_disjunct(const _CharT* __s) const _GLIBCXX_NOEXCEPT |
| 346 | { |
| 347 | return (less<const _CharT*>()(__s, _M_data()) |
| 348 | || less<const _CharT*>()(_M_data() + this->size(), __s)); |
| 349 | } |
| 350 | |
| 351 | // When __n = 1 way faster than the general multichar |
| 352 | // traits_type::copy/move/assign. |
| 353 | static void |
| 354 | _S_copy(_CharT* __d, const _CharT* __s, size_type __n) |
| 355 | { |
| 356 | if (__n == 1) |
| 357 | traits_type::assign(*__d, *__s); |
| 358 | else |
| 359 | traits_type::copy(__d, __s, __n); |
| 360 | } |
| 361 | |
| 362 | static void |
| 363 | _S_move(_CharT* __d, const _CharT* __s, size_type __n) |
| 364 | { |
| 365 | if (__n == 1) |
| 366 | traits_type::assign(*__d, *__s); |
| 367 | else |
| 368 | traits_type::move(__d, __s, __n); |
| 369 | } |
| 370 | |
| 371 | static void |
| 372 | _S_assign(_CharT* __d, size_type __n, _CharT __c) |
| 373 | { |
| 374 | if (__n == 1) |
| 375 | traits_type::assign(*__d, __c); |
| 376 | else |
| 377 | traits_type::assign(__d, __n, __c); |
| 378 | } |
| 379 | |
| 380 | // _S_copy_chars is a separate template to permit specialization |
| 381 | // to optimize for the common case of pointers as iterators. |
| 382 | template<class _Iterator> |
| 383 | static void |
| 384 | _S_copy_chars(_CharT* __p, _Iterator __k1, _Iterator __k2) |
| 385 | { |
| 386 | for (; __k1 != __k2; ++__k1, (void)++__p) |
| 387 | traits_type::assign(*__p, *__k1); // These types are off. |
| 388 | } |
| 389 | |
| 390 | static void |
| 391 | _S_copy_chars(_CharT* __p, iterator __k1, iterator __k2) _GLIBCXX_NOEXCEPT |
| 392 | { _S_copy_chars(__p, __k1.base(), __k2.base()); } |
| 393 | |
| 394 | static void |
| 395 | _S_copy_chars(_CharT* __p, const_iterator __k1, const_iterator __k2) |
| 396 | _GLIBCXX_NOEXCEPT |
| 397 | { _S_copy_chars(__p, __k1.base(), __k2.base()); } |
| 398 | |
| 399 | static void |
| 400 | _S_copy_chars(_CharT* __p, _CharT* __k1, _CharT* __k2) _GLIBCXX_NOEXCEPT |
| 401 | { _S_copy(__p, __k1, __k2 - __k1); } |
| 402 | |
| 403 | static void |
| 404 | _S_copy_chars(_CharT* __p, const _CharT* __k1, const _CharT* __k2) |
| 405 | _GLIBCXX_NOEXCEPT |
| 406 | { _S_copy(__p, __k1, __k2 - __k1); } |
| 407 | |
| 408 | static int |
| 409 | _S_compare(size_type __n1, size_type __n2) _GLIBCXX_NOEXCEPT |
| 410 | { |
| 411 | const difference_type __d = difference_type(__n1 - __n2); |
| 412 | |
| 413 | if (__d > __gnu_cxx::__numeric_traits<int>::__max) |
| 414 | return __gnu_cxx::__numeric_traits<int>::__max; |
| 415 | else if (__d < __gnu_cxx::__numeric_traits<int>::__min) |
| 416 | return __gnu_cxx::__numeric_traits<int>::__min; |
| 417 | else |
| 418 | return int(__d); |
| 419 | } |
| 420 | |
| 421 | void |
| 422 | _M_assign(const basic_string&); |
| 423 | |
| 424 | void |
| 425 | _M_mutate(size_type __pos, size_type __len1, const _CharT* __s, |
| 426 | size_type __len2); |
| 427 | |
| 428 | void |
| 429 | _M_erase(size_type __pos, size_type __n); |
| 430 | |
| 431 | public: |
| 432 | // Construct/copy/destroy: |
| 433 | // NB: We overload ctors in some cases instead of using default |
| 434 | // arguments, per 17.4.4.4 para. 2 item 2. |
| 435 | |
| 436 | /** |
| 437 | * @brief Default constructor creates an empty string. |
| 438 | */ |
| 439 | basic_string() |
| 440 | _GLIBCXX_NOEXCEPT_IF(is_nothrow_default_constructible<_Alloc>::value) |
| 441 | : _M_dataplus(_M_local_data()) |
| 442 | { _M_set_length(0); } |
| 443 | |
| 444 | /** |
| 445 | * @brief Construct an empty string using allocator @a a. |
| 446 | */ |
| 447 | explicit |
| 448 | basic_string(const _Alloc& __a) _GLIBCXX_NOEXCEPT |
| 449 | : _M_dataplus(_M_local_data(), __a) |
| 450 | { _M_set_length(0); } |
| 451 | |
| 452 | /** |
| 453 | * @brief Construct string with copy of value of @a __str. |
| 454 | * @param __str Source string. |
| 455 | */ |
| 456 | basic_string(const basic_string& __str) |
| 457 | : _M_dataplus(_M_local_data(), |
| 458 | _Alloc_traits::_S_select_on_copy(__str._M_get_allocator())) |
| 459 | { _M_construct(__str._M_data(), __str._M_data() + __str.length()); } |
| 460 | |
| 461 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
| 462 | // 2583. no way to supply an allocator for basic_string(str, pos) |
| 463 | /** |
| 464 | * @brief Construct string as copy of a substring. |
| 465 | * @param __str Source string. |
| 466 | * @param __pos Index of first character to copy from. |
| 467 | * @param __a Allocator to use. |
| 468 | */ |
| 469 | basic_string(const basic_string& __str, size_type __pos, |
| 470 | const _Alloc& __a = _Alloc()) |
| 471 | : _M_dataplus(_M_local_data(), __a) |
| 472 | { |
| 473 | const _CharT* __start = __str._M_data() |
| 474 | + __str._M_check(__pos, "basic_string::basic_string"); |
| 475 | _M_construct(__start, __start + __str._M_limit(__pos, npos)); |
| 476 | } |
| 477 | |
| 478 | /** |
| 479 | * @brief Construct string as copy of a substring. |
| 480 | * @param __str Source string. |
| 481 | * @param __pos Index of first character to copy from. |
| 482 | * @param __n Number of characters to copy. |
| 483 | */ |
| 484 | basic_string(const basic_string& __str, size_type __pos, |
| 485 | size_type __n) |
| 486 | : _M_dataplus(_M_local_data()) |
| 487 | { |
| 488 | const _CharT* __start = __str._M_data() |
| 489 | + __str._M_check(__pos, "basic_string::basic_string"); |
| 490 | _M_construct(__start, __start + __str._M_limit(__pos, __n)); |
| 491 | } |
| 492 | |
| 493 | /** |
| 494 | * @brief Construct string as copy of a substring. |
| 495 | * @param __str Source string. |
| 496 | * @param __pos Index of first character to copy from. |
| 497 | * @param __n Number of characters to copy. |
| 498 | * @param __a Allocator to use. |
| 499 | */ |
| 500 | basic_string(const basic_string& __str, size_type __pos, |
| 501 | size_type __n, const _Alloc& __a) |
| 502 | : _M_dataplus(_M_local_data(), __a) |
| 503 | { |
| 504 | const _CharT* __start |
| 505 | = __str._M_data() + __str._M_check(__pos, "string::string"); |
| 506 | _M_construct(__start, __start + __str._M_limit(__pos, __n)); |
| 507 | } |
| 508 | |
| 509 | /** |
| 510 | * @brief Construct string initialized by a character %array. |
| 511 | * @param __s Source character %array. |
| 512 | * @param __n Number of characters to copy. |
| 513 | * @param __a Allocator to use (default is default allocator). |
| 514 | * |
| 515 | * NB: @a __s must have at least @a __n characters, '\\0' |
| 516 | * has no special meaning. |
| 517 | */ |
| 518 | basic_string(const _CharT* __s, size_type __n, |
| 519 | const _Alloc& __a = _Alloc()) |
| 520 | : _M_dataplus(_M_local_data(), __a) |
| 521 | { _M_construct(__s, __s + __n); } |
| 522 | |
| 523 | /** |
| 524 | * @brief Construct string as copy of a C string. |
| 525 | * @param __s Source C string. |
| 526 | * @param __a Allocator to use (default is default allocator). |
| 527 | */ |
| 528 | #if __cpp_deduction_guides && ! defined _GLIBCXX_DEFINING_STRING_INSTANTIATIONS |
| 529 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
| 530 | // 3076. basic_string CTAD ambiguity |
| 531 | template<typename = _RequireAllocator<_Alloc>> |
| 532 | #endif |
| 533 | basic_string(const _CharT* __s, const _Alloc& __a = _Alloc()) |
| 534 | : _M_dataplus(_M_local_data(), __a) |
| 535 | { |
| 536 | const _CharT* __end = __s ? __s + traits_type::length(__s) |
| 537 | // We just need a non-null pointer here to get an exception: |
| 538 | : reinterpret_cast<const _CharT*>(__alignof__(_CharT)); |
| 539 | _M_construct(__s, __end, random_access_iterator_tag()); |
| 540 | } |
| 541 | |
| 542 | /** |
| 543 | * @brief Construct string as multiple characters. |
| 544 | * @param __n Number of characters. |
| 545 | * @param __c Character to use. |
| 546 | * @param __a Allocator to use (default is default allocator). |
| 547 | */ |
| 548 | #if __cpp_deduction_guides && ! defined _GLIBCXX_DEFINING_STRING_INSTANTIATIONS |
| 549 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
| 550 | // 3076. basic_string CTAD ambiguity |
| 551 | template<typename = _RequireAllocator<_Alloc>> |
| 552 | #endif |
| 553 | basic_string(size_type __n, _CharT __c, const _Alloc& __a = _Alloc()) |
| 554 | : _M_dataplus(_M_local_data(), __a) |
| 555 | { _M_construct(__n, __c); } |
| 556 | |
| 557 | #if __cplusplus >= 201103L |
| 558 | /** |
| 559 | * @brief Move construct string. |
| 560 | * @param __str Source string. |
| 561 | * |
| 562 | * The newly-created string contains the exact contents of @a __str. |
| 563 | * @a __str is a valid, but unspecified string. |
| 564 | */ |
| 565 | basic_string(basic_string&& __str) noexcept |
| 566 | : _M_dataplus(_M_local_data(), std::move(__str._M_get_allocator())) |
| 567 | { |
| 568 | if (__str._M_is_local()) |
| 569 | { |
| 570 | traits_type::copy(_M_local_buf, __str._M_local_buf, |
| 571 | _S_local_capacity + 1); |
| 572 | } |
| 573 | else |
| 574 | { |
| 575 | _M_data(__str._M_data()); |
| 576 | _M_capacity(__str._M_allocated_capacity); |
| 577 | } |
| 578 | |
| 579 | // Must use _M_length() here not _M_set_length() because |
| 580 | // basic_stringbuf relies on writing into unallocated capacity so |
| 581 | // we mess up the contents if we put a '\0' in the string. |
| 582 | _M_length(__str.length()); |
| 583 | __str._M_data(__str._M_local_data()); |
| 584 | __str._M_set_length(0); |
| 585 | } |
| 586 | |
| 587 | /** |
| 588 | * @brief Construct string from an initializer %list. |
| 589 | * @param __l std::initializer_list of characters. |
| 590 | * @param __a Allocator to use (default is default allocator). |
| 591 | */ |
| 592 | basic_string(initializer_list<_CharT> __l, const _Alloc& __a = _Alloc()) |
| 593 | : _M_dataplus(_M_local_data(), __a) |
| 594 | { _M_construct(__l.begin(), __l.end()); } |
| 595 | |
| 596 | basic_string(const basic_string& __str, const _Alloc& __a) |
| 597 | : _M_dataplus(_M_local_data(), __a) |
| 598 | { _M_construct(__str.begin(), __str.end()); } |
| 599 | |
| 600 | basic_string(basic_string&& __str, const _Alloc& __a) |
| 601 | noexcept(_Alloc_traits::_S_always_equal()) |
| 602 | : _M_dataplus(_M_local_data(), __a) |
| 603 | { |
| 604 | if (__str._M_is_local()) |
| 605 | { |
| 606 | traits_type::copy(_M_local_buf, __str._M_local_buf, |
| 607 | _S_local_capacity + 1); |
| 608 | _M_length(__str.length()); |
| 609 | __str._M_set_length(0); |
| 610 | } |
| 611 | else if (_Alloc_traits::_S_always_equal() |
| 612 | || __str.get_allocator() == __a) |
| 613 | { |
| 614 | _M_data(__str._M_data()); |
| 615 | _M_length(__str.length()); |
| 616 | _M_capacity(__str._M_allocated_capacity); |
| 617 | __str._M_data(__str._M_local_buf); |
| 618 | __str._M_set_length(0); |
| 619 | } |
| 620 | else |
| 621 | _M_construct(__str.begin(), __str.end()); |
| 622 | } |
| 623 | |
| 624 | #endif // C++11 |
| 625 | |
| 626 | /** |
| 627 | * @brief Construct string as copy of a range. |
| 628 | * @param __beg Start of range. |
| 629 | * @param __end End of range. |
| 630 | * @param __a Allocator to use (default is default allocator). |
| 631 | */ |
| 632 | #if __cplusplus >= 201103L |
| 633 | template<typename _InputIterator, |
| 634 | typename = std::_RequireInputIter<_InputIterator>> |
| 635 | #else |
| 636 | template<typename _InputIterator> |
| 637 | #endif |
| 638 | basic_string(_InputIterator __beg, _InputIterator __end, |
| 639 | const _Alloc& __a = _Alloc()) |
| 640 | : _M_dataplus(_M_local_data(), __a) |
| 641 | { _M_construct(__beg, __end); } |
| 642 | |
| 643 | #if __cplusplus >= 201703L |
| 644 | /** |
| 645 | * @brief Construct string from a substring of a string_view. |
| 646 | * @param __t Source object convertible to string view. |
| 647 | * @param __pos The index of the first character to copy from __t. |
| 648 | * @param __n The number of characters to copy from __t. |
| 649 | * @param __a Allocator to use. |
| 650 | */ |
| 651 | template<typename _Tp, |
| 652 | typename = enable_if_t<is_convertible_v<const _Tp&, __sv_type>>> |
| 653 | basic_string(const _Tp& __t, size_type __pos, size_type __n, |
| 654 | const _Alloc& __a = _Alloc()) |
| 655 | : basic_string(_S_to_string_view(__t).substr(__pos, __n), __a) { } |
| 656 | |
| 657 | /** |
| 658 | * @brief Construct string from a string_view. |
| 659 | * @param __t Source object convertible to string view. |
| 660 | * @param __a Allocator to use (default is default allocator). |
| 661 | */ |
| 662 | template<typename _Tp, typename = _If_sv<_Tp, void>> |
| 663 | explicit |
| 664 | basic_string(const _Tp& __t, const _Alloc& __a = _Alloc()) |
| 665 | : basic_string(__sv_wrapper(_S_to_string_view(__t)), __a) { } |
| 666 | #endif // C++17 |
| 667 | |
| 668 | /** |
| 669 | * @brief Destroy the string instance. |
| 670 | */ |
| 671 | ~basic_string() |
| 672 | { _M_dispose(); } |
| 673 | |
| 674 | /** |
| 675 | * @brief Assign the value of @a str to this string. |
| 676 | * @param __str Source string. |
| 677 | */ |
| 678 | basic_string& |
| 679 | operator=(const basic_string& __str) |
| 680 | { |
| 681 | return this->assign(__str); |
| 682 | } |
| 683 | |
| 684 | /** |
| 685 | * @brief Copy contents of @a s into this string. |
| 686 | * @param __s Source null-terminated string. |
| 687 | */ |
| 688 | basic_string& |
| 689 | operator=(const _CharT* __s) |
| 690 | { return this->assign(__s); } |
| 691 | |
| 692 | /** |
| 693 | * @brief Set value to string of length 1. |
| 694 | * @param __c Source character. |
| 695 | * |
| 696 | * Assigning to a character makes this string length 1 and |
| 697 | * (*this)[0] == @a c. |
| 698 | */ |
| 699 | basic_string& |
| 700 | operator=(_CharT __c) |
| 701 | { |
| 702 | this->assign(1, __c); |
| 703 | return *this; |
| 704 | } |
| 705 | |
| 706 | #if __cplusplus >= 201103L |
| 707 | /** |
| 708 | * @brief Move assign the value of @a str to this string. |
| 709 | * @param __str Source string. |
| 710 | * |
| 711 | * The contents of @a str are moved into this string (without copying). |
| 712 | * @a str is a valid, but unspecified string. |
| 713 | */ |
| 714 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
| 715 | // 2063. Contradictory requirements for string move assignment |
| 716 | basic_string& |
| 717 | operator=(basic_string&& __str) |
| 718 | noexcept(_Alloc_traits::_S_nothrow_move()) |
| 719 | { |
| 720 | if (!_M_is_local() && _Alloc_traits::_S_propagate_on_move_assign() |
| 721 | && !_Alloc_traits::_S_always_equal() |
| 722 | && _M_get_allocator() != __str._M_get_allocator()) |
| 723 | { |
| 724 | // Destroy existing storage before replacing allocator. |
| 725 | _M_destroy(_M_allocated_capacity); |
| 726 | _M_data(_M_local_data()); |
| 727 | _M_set_length(0); |
| 728 | } |
| 729 | // Replace allocator if POCMA is true. |
| 730 | std::__alloc_on_move(_M_get_allocator(), __str._M_get_allocator()); |
| 731 | |
| 732 | if (__str._M_is_local()) |
| 733 | { |
| 734 | // We've always got room for a short string, just copy it |
| 735 | // (unless this is a self-move, because that would violate the |
| 736 | // char_traits::copy precondition that the ranges don't overlap). |
| 737 | if (__builtin_expect(std::__addressof(__str) != this, true)) |
| 738 | { |
| 739 | if (__str.size()) |
| 740 | this->_S_copy(_M_data(), __str._M_data(), __str.size()); |
| 741 | _M_set_length(__str.size()); |
| 742 | } |
| 743 | } |
| 744 | else if (_Alloc_traits::_S_propagate_on_move_assign() |
| 745 | || _Alloc_traits::_S_always_equal() |
| 746 | || _M_get_allocator() == __str._M_get_allocator()) |
| 747 | { |
| 748 | // Just move the allocated pointer, our allocator can free it. |
| 749 | pointer __data = nullptr; |
| 750 | size_type __capacity; |
| 751 | if (!_M_is_local()) |
| 752 | { |
| 753 | if (_Alloc_traits::_S_always_equal()) |
| 754 | { |
| 755 | // __str can reuse our existing storage. |
| 756 | __data = _M_data(); |
| 757 | __capacity = _M_allocated_capacity; |
| 758 | } |
| 759 | else // __str can't use it, so free it. |
| 760 | _M_destroy(_M_allocated_capacity); |
| 761 | } |
| 762 | |
| 763 | _M_data(__str._M_data()); |
| 764 | _M_length(__str.length()); |
| 765 | _M_capacity(__str._M_allocated_capacity); |
| 766 | if (__data) |
| 767 | { |
| 768 | __str._M_data(__data); |
| 769 | __str._M_capacity(__capacity); |
| 770 | } |
| 771 | else |
| 772 | __str._M_data(__str._M_local_buf); |
| 773 | } |
| 774 | else // Need to do a deep copy |
| 775 | assign(__str); |
| 776 | __str.clear(); |
| 777 | return *this; |
| 778 | } |
| 779 | |
| 780 | /** |
| 781 | * @brief Set value to string constructed from initializer %list. |
| 782 | * @param __l std::initializer_list. |
| 783 | */ |
| 784 | basic_string& |
| 785 | operator=(initializer_list<_CharT> __l) |
| 786 | { |
| 787 | this->assign(__l.begin(), __l.size()); |
| 788 | return *this; |
| 789 | } |
| 790 | #endif // C++11 |
| 791 | |
| 792 | #if __cplusplus >= 201703L |
| 793 | /** |
| 794 | * @brief Set value to string constructed from a string_view. |
| 795 | * @param __svt An object convertible to string_view. |
| 796 | */ |
| 797 | template<typename _Tp> |
| 798 | _If_sv<_Tp, basic_string&> |
| 799 | operator=(const _Tp& __svt) |
| 800 | { return this->assign(__svt); } |
| 801 | |
| 802 | /** |
| 803 | * @brief Convert to a string_view. |
| 804 | * @return A string_view. |
| 805 | */ |
| 806 | operator __sv_type() const noexcept |
| 807 | { return __sv_type(data(), size()); } |
| 808 | #endif // C++17 |
| 809 | |
| 810 | // Iterators: |
| 811 | /** |
| 812 | * Returns a read/write iterator that points to the first character in |
| 813 | * the %string. |
| 814 | */ |
| 815 | iterator |
| 816 | begin() _GLIBCXX_NOEXCEPT |
| 817 | { return iterator(_M_data()); } |
| 818 | |
| 819 | /** |
| 820 | * Returns a read-only (constant) iterator that points to the first |
| 821 | * character in the %string. |
| 822 | */ |
| 823 | const_iterator |
| 824 | begin() const _GLIBCXX_NOEXCEPT |
| 825 | { return const_iterator(_M_data()); } |
| 826 | |
| 827 | /** |
| 828 | * Returns a read/write iterator that points one past the last |
| 829 | * character in the %string. |
| 830 | */ |
| 831 | iterator |
| 832 | end() _GLIBCXX_NOEXCEPT |
| 833 | { return iterator(_M_data() + this->size()); } |
| 834 | |
| 835 | /** |
| 836 | * Returns a read-only (constant) iterator that points one past the |
| 837 | * last character in the %string. |
| 838 | */ |
| 839 | const_iterator |
| 840 | end() const _GLIBCXX_NOEXCEPT |
| 841 | { return const_iterator(_M_data() + this->size()); } |
| 842 | |
| 843 | /** |
| 844 | * Returns a read/write reverse iterator that points to the last |
| 845 | * character in the %string. Iteration is done in reverse element |
| 846 | * order. |
| 847 | */ |
| 848 | reverse_iterator |
| 849 | rbegin() _GLIBCXX_NOEXCEPT |
| 850 | { return reverse_iterator(this->end()); } |
| 851 | |
| 852 | /** |
| 853 | * Returns a read-only (constant) reverse iterator that points |
| 854 | * to the last character in the %string. Iteration is done in |
| 855 | * reverse element order. |
| 856 | */ |
| 857 | const_reverse_iterator |
| 858 | rbegin() const _GLIBCXX_NOEXCEPT |
| 859 | { return const_reverse_iterator(this->end()); } |
| 860 | |
| 861 | /** |
| 862 | * Returns a read/write reverse iterator that points to one before the |
| 863 | * first character in the %string. Iteration is done in reverse |
| 864 | * element order. |
| 865 | */ |
| 866 | reverse_iterator |
| 867 | rend() _GLIBCXX_NOEXCEPT |
| 868 | { return reverse_iterator(this->begin()); } |
| 869 | |
| 870 | /** |
| 871 | * Returns a read-only (constant) reverse iterator that points |
| 872 | * to one before the first character in the %string. Iteration |
| 873 | * is done in reverse element order. |
| 874 | */ |
| 875 | const_reverse_iterator |
| 876 | rend() const _GLIBCXX_NOEXCEPT |
| 877 | { return const_reverse_iterator(this->begin()); } |
| 878 | |
| 879 | #if __cplusplus >= 201103L |
| 880 | /** |
| 881 | * Returns a read-only (constant) iterator that points to the first |
| 882 | * character in the %string. |
| 883 | */ |
| 884 | const_iterator |
| 885 | cbegin() const noexcept |
| 886 | { return const_iterator(this->_M_data()); } |
| 887 | |
| 888 | /** |
| 889 | * Returns a read-only (constant) iterator that points one past the |
| 890 | * last character in the %string. |
| 891 | */ |
| 892 | const_iterator |
| 893 | cend() const noexcept |
| 894 | { return const_iterator(this->_M_data() + this->size()); } |
| 895 | |
| 896 | /** |
| 897 | * Returns a read-only (constant) reverse iterator that points |
| 898 | * to the last character in the %string. Iteration is done in |
| 899 | * reverse element order. |
| 900 | */ |
| 901 | const_reverse_iterator |
| 902 | crbegin() const noexcept |
| 903 | { return const_reverse_iterator(this->end()); } |
| 904 | |
| 905 | /** |
| 906 | * Returns a read-only (constant) reverse iterator that points |
| 907 | * to one before the first character in the %string. Iteration |
| 908 | * is done in reverse element order. |
| 909 | */ |
| 910 | const_reverse_iterator |
| 911 | crend() const noexcept |
| 912 | { return const_reverse_iterator(this->begin()); } |
| 913 | #endif |
| 914 | |
| 915 | public: |
| 916 | // Capacity: |
| 917 | /// Returns the number of characters in the string, not including any |
| 918 | /// null-termination. |
| 919 | size_type |
| 920 | size() const _GLIBCXX_NOEXCEPT |
| 921 | { return _M_string_length; } |
| 922 | |
| 923 | /// Returns the number of characters in the string, not including any |
| 924 | /// null-termination. |
| 925 | size_type |
| 926 | length() const _GLIBCXX_NOEXCEPT |
| 927 | { return _M_string_length; } |
| 928 | |
| 929 | /// Returns the size() of the largest possible %string. |
| 930 | size_type |
| 931 | max_size() const _GLIBCXX_NOEXCEPT |
| 932 | { return (_Alloc_traits::max_size(_M_get_allocator()) - 1) / 2; } |
| 933 | |
| 934 | /** |
| 935 | * @brief Resizes the %string to the specified number of characters. |
| 936 | * @param __n Number of characters the %string should contain. |
| 937 | * @param __c Character to fill any new elements. |
| 938 | * |
| 939 | * This function will %resize the %string to the specified |
| 940 | * number of characters. If the number is smaller than the |
| 941 | * %string's current size the %string is truncated, otherwise |
| 942 | * the %string is extended and new elements are %set to @a __c. |
| 943 | */ |
| 944 | void |
| 945 | resize(size_type __n, _CharT __c); |
| 946 | |
| 947 | /** |
| 948 | * @brief Resizes the %string to the specified number of characters. |
| 949 | * @param __n Number of characters the %string should contain. |
| 950 | * |
| 951 | * This function will resize the %string to the specified length. If |
| 952 | * the new size is smaller than the %string's current size the %string |
| 953 | * is truncated, otherwise the %string is extended and new characters |
| 954 | * are default-constructed. For basic types such as char, this means |
| 955 | * setting them to 0. |
| 956 | */ |
| 957 | void |
| 958 | resize(size_type __n) |
| 959 | { this->resize(__n, _CharT()); } |
| 960 | |
| 961 | #if __cplusplus >= 201103L |
| 962 | #pragma GCC diagnostic push |
| 963 | #pragma GCC diagnostic ignored "-Wdeprecated-declarations" |
| 964 | /// A non-binding request to reduce capacity() to size(). |
| 965 | void |
| 966 | shrink_to_fit() noexcept |
| 967 | { reserve(); } |
| 968 | #pragma GCC diagnostic pop |
| 969 | #endif |
| 970 | |
| 971 | /** |
| 972 | * Returns the total number of characters that the %string can hold |
| 973 | * before needing to allocate more memory. |
| 974 | */ |
| 975 | size_type |
| 976 | capacity() const _GLIBCXX_NOEXCEPT |
| 977 | { |
| 978 | return _M_is_local() ? size_type(_S_local_capacity) |
| 979 | : _M_allocated_capacity; |
| 980 | } |
| 981 | |
| 982 | /** |
| 983 | * @brief Attempt to preallocate enough memory for specified number of |
| 984 | * characters. |
| 985 | * @param __res_arg Number of characters required. |
| 986 | * @throw std::length_error If @a __res_arg exceeds @c max_size(). |
| 987 | * |
| 988 | * This function attempts to reserve enough memory for the |
| 989 | * %string to hold the specified number of characters. If the |
| 990 | * number requested is more than max_size(), length_error is |
| 991 | * thrown. |
| 992 | * |
| 993 | * The advantage of this function is that if optimal code is a |
| 994 | * necessity and the user can determine the string length that will be |
| 995 | * required, the user can reserve the memory in %advance, and thus |
| 996 | * prevent a possible reallocation of memory and copying of %string |
| 997 | * data. |
| 998 | */ |
| 999 | void |
| 1000 | reserve(size_type __res_arg); |
| 1001 | |
| 1002 | /** |
| 1003 | * Equivalent to shrink_to_fit(). |
| 1004 | */ |
| 1005 | #if __cplusplus > 201703L |
| 1006 | [[deprecated("use shrink_to_fit() instead")]] |
| 1007 | #endif |
| 1008 | void |
| 1009 | reserve(); |
| 1010 | |
| 1011 | /** |
| 1012 | * Erases the string, making it empty. |
| 1013 | */ |
| 1014 | void |
| 1015 | clear() _GLIBCXX_NOEXCEPT |
| 1016 | { _M_set_length(0); } |
| 1017 | |
| 1018 | /** |
| 1019 | * Returns true if the %string is empty. Equivalent to |
| 1020 | * <code>*this == ""</code>. |
| 1021 | */ |
| 1022 | _GLIBCXX_NODISCARD bool |
| 1023 | empty() const _GLIBCXX_NOEXCEPT |
| 1024 | { return this->size() == 0; } |
| 1025 | |
| 1026 | // Element access: |
| 1027 | /** |
| 1028 | * @brief Subscript access to the data contained in the %string. |
| 1029 | * @param __pos The index of the character to access. |
| 1030 | * @return Read-only (constant) reference to the character. |
| 1031 | * |
| 1032 | * This operator allows for easy, array-style, data access. |
| 1033 | * Note that data access with this operator is unchecked and |
| 1034 | * out_of_range lookups are not defined. (For checked lookups |
| 1035 | * see at().) |
| 1036 | */ |
| 1037 | const_reference |
| 1038 | operator[] (size_type __pos) const _GLIBCXX_NOEXCEPT |
| 1039 | { |
| 1040 | __glibcxx_assert(__pos <= size()); |
| 1041 | return _M_data()[__pos]; |
| 1042 | } |
| 1043 | |
| 1044 | /** |
| 1045 | * @brief Subscript access to the data contained in the %string. |
| 1046 | * @param __pos The index of the character to access. |
| 1047 | * @return Read/write reference to the character. |
| 1048 | * |
| 1049 | * This operator allows for easy, array-style, data access. |
| 1050 | * Note that data access with this operator is unchecked and |
| 1051 | * out_of_range lookups are not defined. (For checked lookups |
| 1052 | * see at().) |
| 1053 | */ |
| 1054 | reference |
| 1055 | operator[](size_type __pos) |
| 1056 | { |
| 1057 | // Allow pos == size() both in C++98 mode, as v3 extension, |
| 1058 | // and in C++11 mode. |
| 1059 | __glibcxx_assert(__pos <= size()); |
| 1060 | // In pedantic mode be strict in C++98 mode. |
| 1061 | _GLIBCXX_DEBUG_PEDASSERT(__cplusplus >= 201103L || __pos < size()); |
| 1062 | return _M_data()[__pos]; |
| 1063 | } |
| 1064 | |
| 1065 | /** |
| 1066 | * @brief Provides access to the data contained in the %string. |
| 1067 | * @param __n The index of the character to access. |
| 1068 | * @return Read-only (const) reference to the character. |
| 1069 | * @throw std::out_of_range If @a n is an invalid index. |
| 1070 | * |
| 1071 | * This function provides for safer data access. The parameter is |
| 1072 | * first checked that it is in the range of the string. The function |
| 1073 | * throws out_of_range if the check fails. |
| 1074 | */ |
| 1075 | const_reference |
| 1076 | at(size_type __n) const |
| 1077 | { |
| 1078 | if (__n >= this->size()) |
| 1079 | __throw_out_of_range_fmt(__N("basic_string::at: __n " |
| 1080 | "(which is %zu) >= this->size() " |
| 1081 | "(which is %zu)"), |
| 1082 | __n, this->size()); |
| 1083 | return _M_data()[__n]; |
| 1084 | } |
| 1085 | |
| 1086 | /** |
| 1087 | * @brief Provides access to the data contained in the %string. |
| 1088 | * @param __n The index of the character to access. |
| 1089 | * @return Read/write reference to the character. |
| 1090 | * @throw std::out_of_range If @a n is an invalid index. |
| 1091 | * |
| 1092 | * This function provides for safer data access. The parameter is |
| 1093 | * first checked that it is in the range of the string. The function |
| 1094 | * throws out_of_range if the check fails. |
| 1095 | */ |
| 1096 | reference |
| 1097 | at(size_type __n) |
| 1098 | { |
| 1099 | if (__n >= size()) |
| 1100 | __throw_out_of_range_fmt(__N("basic_string::at: __n " |
| 1101 | "(which is %zu) >= this->size() " |
| 1102 | "(which is %zu)"), |
| 1103 | __n, this->size()); |
| 1104 | return _M_data()[__n]; |
| 1105 | } |
| 1106 | |
| 1107 | #if __cplusplus >= 201103L |
| 1108 | /** |
| 1109 | * Returns a read/write reference to the data at the first |
| 1110 | * element of the %string. |
| 1111 | */ |
| 1112 | reference |
| 1113 | front() noexcept |
| 1114 | { |
| 1115 | __glibcxx_assert(!empty()); |
| 1116 | return operator[](0); |
| 1117 | } |
| 1118 | |
| 1119 | /** |
| 1120 | * Returns a read-only (constant) reference to the data at the first |
| 1121 | * element of the %string. |
| 1122 | */ |
| 1123 | const_reference |
| 1124 | front() const noexcept |
| 1125 | { |
| 1126 | __glibcxx_assert(!empty()); |
| 1127 | return operator[](0); |
| 1128 | } |
| 1129 | |
| 1130 | /** |
| 1131 | * Returns a read/write reference to the data at the last |
| 1132 | * element of the %string. |
| 1133 | */ |
| 1134 | reference |
| 1135 | back() noexcept |
| 1136 | { |
| 1137 | __glibcxx_assert(!empty()); |
| 1138 | return operator[](this->size() - 1); |
| 1139 | } |
| 1140 | |
| 1141 | /** |
| 1142 | * Returns a read-only (constant) reference to the data at the |
| 1143 | * last element of the %string. |
| 1144 | */ |
| 1145 | const_reference |
| 1146 | back() const noexcept |
| 1147 | { |
| 1148 | __glibcxx_assert(!empty()); |
| 1149 | return operator[](this->size() - 1); |
| 1150 | } |
| 1151 | #endif |
| 1152 | |
| 1153 | // Modifiers: |
| 1154 | /** |
| 1155 | * @brief Append a string to this string. |
| 1156 | * @param __str The string to append. |
| 1157 | * @return Reference to this string. |
| 1158 | */ |
| 1159 | basic_string& |
| 1160 | operator+=(const basic_string& __str) |
| 1161 | { return this->append(__str); } |
| 1162 | |
| 1163 | /** |
| 1164 | * @brief Append a C string. |
| 1165 | * @param __s The C string to append. |
| 1166 | * @return Reference to this string. |
| 1167 | */ |
| 1168 | basic_string& |
| 1169 | operator+=(const _CharT* __s) |
| 1170 | { return this->append(__s); } |
| 1171 | |
| 1172 | /** |
| 1173 | * @brief Append a character. |
| 1174 | * @param __c The character to append. |
| 1175 | * @return Reference to this string. |
| 1176 | */ |
| 1177 | basic_string& |
| 1178 | operator+=(_CharT __c) |
| 1179 | { |
| 1180 | this->push_back(__c); |
| 1181 | return *this; |
| 1182 | } |
| 1183 | |
| 1184 | #if __cplusplus >= 201103L |
| 1185 | /** |
| 1186 | * @brief Append an initializer_list of characters. |
| 1187 | * @param __l The initializer_list of characters to be appended. |
| 1188 | * @return Reference to this string. |
| 1189 | */ |
| 1190 | basic_string& |
| 1191 | operator+=(initializer_list<_CharT> __l) |
| 1192 | { return this->append(__l.begin(), __l.size()); } |
| 1193 | #endif // C++11 |
| 1194 | |
| 1195 | #if __cplusplus >= 201703L |
| 1196 | /** |
| 1197 | * @brief Append a string_view. |
| 1198 | * @param __svt An object convertible to string_view to be appended. |
| 1199 | * @return Reference to this string. |
| 1200 | */ |
| 1201 | template<typename _Tp> |
| 1202 | _If_sv<_Tp, basic_string&> |
| 1203 | operator+=(const _Tp& __svt) |
| 1204 | { return this->append(__svt); } |
| 1205 | #endif // C++17 |
| 1206 | |
| 1207 | /** |
| 1208 | * @brief Append a string to this string. |
| 1209 | * @param __str The string to append. |
| 1210 | * @return Reference to this string. |
| 1211 | */ |
| 1212 | basic_string& |
| 1213 | append(const basic_string& __str) |
| 1214 | { return _M_append(__str._M_data(), __str.size()); } |
| 1215 | |
| 1216 | /** |
| 1217 | * @brief Append a substring. |
| 1218 | * @param __str The string to append. |
| 1219 | * @param __pos Index of the first character of str to append. |
| 1220 | * @param __n The number of characters to append. |
| 1221 | * @return Reference to this string. |
| 1222 | * @throw std::out_of_range if @a __pos is not a valid index. |
| 1223 | * |
| 1224 | * This function appends @a __n characters from @a __str |
| 1225 | * starting at @a __pos to this string. If @a __n is is larger |
| 1226 | * than the number of available characters in @a __str, the |
| 1227 | * remainder of @a __str is appended. |
| 1228 | */ |
| 1229 | basic_string& |
| 1230 | append(const basic_string& __str, size_type __pos, size_type __n = npos) |
| 1231 | { return _M_append(__str._M_data() |
| 1232 | + __str._M_check(__pos, "basic_string::append"), |
| 1233 | __str._M_limit(__pos, __n)); } |
| 1234 | |
| 1235 | /** |
| 1236 | * @brief Append a C substring. |
| 1237 | * @param __s The C string to append. |
| 1238 | * @param __n The number of characters to append. |
| 1239 | * @return Reference to this string. |
| 1240 | */ |
| 1241 | basic_string& |
| 1242 | append(const _CharT* __s, size_type __n) |
| 1243 | { |
| 1244 | __glibcxx_requires_string_len(__s, __n); |
| 1245 | _M_check_length(size_type(0), __n, "basic_string::append"); |
| 1246 | return _M_append(__s, __n); |
| 1247 | } |
| 1248 | |
| 1249 | /** |
| 1250 | * @brief Append a C string. |
| 1251 | * @param __s The C string to append. |
| 1252 | * @return Reference to this string. |
| 1253 | */ |
| 1254 | basic_string& |
| 1255 | append(const _CharT* __s) |
| 1256 | { |
| 1257 | __glibcxx_requires_string(__s); |
| 1258 | const size_type __n = traits_type::length(__s); |
| 1259 | _M_check_length(size_type(0), __n, "basic_string::append"); |
| 1260 | return _M_append(__s, __n); |
| 1261 | } |
| 1262 | |
| 1263 | /** |
| 1264 | * @brief Append multiple characters. |
| 1265 | * @param __n The number of characters to append. |
| 1266 | * @param __c The character to use. |
| 1267 | * @return Reference to this string. |
| 1268 | * |
| 1269 | * Appends __n copies of __c to this string. |
| 1270 | */ |
| 1271 | basic_string& |
| 1272 | append(size_type __n, _CharT __c) |
| 1273 | { return _M_replace_aux(this->size(), size_type(0), __n, __c); } |
| 1274 | |
| 1275 | #if __cplusplus >= 201103L |
| 1276 | /** |
| 1277 | * @brief Append an initializer_list of characters. |
| 1278 | * @param __l The initializer_list of characters to append. |
| 1279 | * @return Reference to this string. |
| 1280 | */ |
| 1281 | basic_string& |
| 1282 | append(initializer_list<_CharT> __l) |
| 1283 | { return this->append(__l.begin(), __l.size()); } |
| 1284 | #endif // C++11 |
| 1285 | |
| 1286 | /** |
| 1287 | * @brief Append a range of characters. |
| 1288 | * @param __first Iterator referencing the first character to append. |
| 1289 | * @param __last Iterator marking the end of the range. |
| 1290 | * @return Reference to this string. |
| 1291 | * |
| 1292 | * Appends characters in the range [__first,__last) to this string. |
| 1293 | */ |
| 1294 | #if __cplusplus >= 201103L |
| 1295 | template<class _InputIterator, |
| 1296 | typename = std::_RequireInputIter<_InputIterator>> |
| 1297 | #else |
| 1298 | template<class _InputIterator> |
| 1299 | #endif |
| 1300 | basic_string& |
| 1301 | append(_InputIterator __first, _InputIterator __last) |
| 1302 | { return this->replace(end(), end(), __first, __last); } |
| 1303 | |
| 1304 | #if __cplusplus >= 201703L |
| 1305 | /** |
| 1306 | * @brief Append a string_view. |
| 1307 | * @param __svt An object convertible to string_view to be appended. |
| 1308 | * @return Reference to this string. |
| 1309 | */ |
| 1310 | template<typename _Tp> |
| 1311 | _If_sv<_Tp, basic_string&> |
| 1312 | append(const _Tp& __svt) |
| 1313 | { |
| 1314 | __sv_type __sv = __svt; |
| 1315 | return this->append(__sv.data(), __sv.size()); |
| 1316 | } |
| 1317 | |
| 1318 | /** |
| 1319 | * @brief Append a range of characters from a string_view. |
| 1320 | * @param __svt An object convertible to string_view to be appended from. |
| 1321 | * @param __pos The position in the string_view to append from. |
| 1322 | * @param __n The number of characters to append from the string_view. |
| 1323 | * @return Reference to this string. |
| 1324 | */ |
| 1325 | template<typename _Tp> |
| 1326 | _If_sv<_Tp, basic_string&> |
| 1327 | append(const _Tp& __svt, size_type __pos, size_type __n = npos) |
| 1328 | { |
| 1329 | __sv_type __sv = __svt; |
| 1330 | return _M_append(__sv.data() |
| 1331 | + std::__sv_check(__sv.size(), __pos, "basic_string::append"), |
| 1332 | std::__sv_limit(__sv.size(), __pos, __n)); |
| 1333 | } |
| 1334 | #endif // C++17 |
| 1335 | |
| 1336 | /** |
| 1337 | * @brief Append a single character. |
| 1338 | * @param __c Character to append. |
| 1339 | */ |
| 1340 | void |
| 1341 | push_back(_CharT __c) |
| 1342 | { |
| 1343 | const size_type __size = this->size(); |
| 1344 | if (__size + 1 > this->capacity()) |
| 1345 | this->_M_mutate(__size, size_type(0), 0, size_type(1)); |
| 1346 | traits_type::assign(this->_M_data()[__size], __c); |
| 1347 | this->_M_set_length(__size + 1); |
| 1348 | } |
| 1349 | |
| 1350 | /** |
| 1351 | * @brief Set value to contents of another string. |
| 1352 | * @param __str Source string to use. |
| 1353 | * @return Reference to this string. |
| 1354 | */ |
| 1355 | basic_string& |
| 1356 | assign(const basic_string& __str) |
| 1357 | { |
| 1358 | #if __cplusplus >= 201103L |
| 1359 | if (_Alloc_traits::_S_propagate_on_copy_assign()) |
| 1360 | { |
| 1361 | if (!_Alloc_traits::_S_always_equal() && !_M_is_local() |
| 1362 | && _M_get_allocator() != __str._M_get_allocator()) |
| 1363 | { |
| 1364 | // Propagating allocator cannot free existing storage so must |
| 1365 | // deallocate it before replacing current allocator. |
| 1366 | if (__str.size() <= _S_local_capacity) |
| 1367 | { |
| 1368 | _M_destroy(_M_allocated_capacity); |
| 1369 | _M_data(_M_local_data()); |
| 1370 | _M_set_length(0); |
| 1371 | } |
| 1372 | else |
| 1373 | { |
| 1374 | const auto __len = __str.size(); |
| 1375 | auto __alloc = __str._M_get_allocator(); |
| 1376 | // If this allocation throws there are no effects: |
| 1377 | auto __ptr = _Alloc_traits::allocate(__alloc, __len + 1); |
| 1378 | _M_destroy(_M_allocated_capacity); |
| 1379 | _M_data(__ptr); |
| 1380 | _M_capacity(__len); |
| 1381 | _M_set_length(__len); |
| 1382 | } |
| 1383 | } |
| 1384 | std::__alloc_on_copy(_M_get_allocator(), __str._M_get_allocator()); |
| 1385 | } |
| 1386 | #endif |
| 1387 | this->_M_assign(__str); |
| 1388 | return *this; |
| 1389 | } |
| 1390 | |
| 1391 | #if __cplusplus >= 201103L |
| 1392 | /** |
| 1393 | * @brief Set value to contents of another string. |
| 1394 | * @param __str Source string to use. |
| 1395 | * @return Reference to this string. |
| 1396 | * |
| 1397 | * This function sets this string to the exact contents of @a __str. |
| 1398 | * @a __str is a valid, but unspecified string. |
| 1399 | */ |
| 1400 | basic_string& |
| 1401 | assign(basic_string&& __str) |
| 1402 | noexcept(_Alloc_traits::_S_nothrow_move()) |
| 1403 | { |
| 1404 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
| 1405 | // 2063. Contradictory requirements for string move assignment |
| 1406 | return *this = std::move(__str); |
| 1407 | } |
| 1408 | #endif // C++11 |
| 1409 | |
| 1410 | /** |
| 1411 | * @brief Set value to a substring of a string. |
| 1412 | * @param __str The string to use. |
| 1413 | * @param __pos Index of the first character of str. |
| 1414 | * @param __n Number of characters to use. |
| 1415 | * @return Reference to this string. |
| 1416 | * @throw std::out_of_range if @a pos is not a valid index. |
| 1417 | * |
| 1418 | * This function sets this string to the substring of @a __str |
| 1419 | * consisting of @a __n characters at @a __pos. If @a __n is |
| 1420 | * is larger than the number of available characters in @a |
| 1421 | * __str, the remainder of @a __str is used. |
| 1422 | */ |
| 1423 | basic_string& |
| 1424 | assign(const basic_string& __str, size_type __pos, size_type __n = npos) |
| 1425 | { return _M_replace(size_type(0), this->size(), __str._M_data() |
| 1426 | + __str._M_check(__pos, "basic_string::assign"), |
| 1427 | __str._M_limit(__pos, __n)); } |
| 1428 | |
| 1429 | /** |
| 1430 | * @brief Set value to a C substring. |
| 1431 | * @param __s The C string to use. |
| 1432 | * @param __n Number of characters to use. |
| 1433 | * @return Reference to this string. |
| 1434 | * |
| 1435 | * This function sets the value of this string to the first @a __n |
| 1436 | * characters of @a __s. If @a __n is is larger than the number of |
| 1437 | * available characters in @a __s, the remainder of @a __s is used. |
| 1438 | */ |
| 1439 | basic_string& |
| 1440 | assign(const _CharT* __s, size_type __n) |
| 1441 | { |
| 1442 | __glibcxx_requires_string_len(__s, __n); |
| 1443 | return _M_replace(size_type(0), this->size(), __s, __n); |
| 1444 | } |
| 1445 | |
| 1446 | /** |
| 1447 | * @brief Set value to contents of a C string. |
| 1448 | * @param __s The C string to use. |
| 1449 | * @return Reference to this string. |
| 1450 | * |
| 1451 | * This function sets the value of this string to the value of @a __s. |
| 1452 | * The data is copied, so there is no dependence on @a __s once the |
| 1453 | * function returns. |
| 1454 | */ |
| 1455 | basic_string& |
| 1456 | assign(const _CharT* __s) |
| 1457 | { |
| 1458 | __glibcxx_requires_string(__s); |
| 1459 | return _M_replace(size_type(0), this->size(), __s, |
| 1460 | traits_type::length(__s)); |
| 1461 | } |
| 1462 | |
| 1463 | /** |
| 1464 | * @brief Set value to multiple characters. |
| 1465 | * @param __n Length of the resulting string. |
| 1466 | * @param __c The character to use. |
| 1467 | * @return Reference to this string. |
| 1468 | * |
| 1469 | * This function sets the value of this string to @a __n copies of |
| 1470 | * character @a __c. |
| 1471 | */ |
| 1472 | basic_string& |
| 1473 | assign(size_type __n, _CharT __c) |
| 1474 | { return _M_replace_aux(size_type(0), this->size(), __n, __c); } |
| 1475 | |
| 1476 | /** |
| 1477 | * @brief Set value to a range of characters. |
| 1478 | * @param __first Iterator referencing the first character to append. |
| 1479 | * @param __last Iterator marking the end of the range. |
| 1480 | * @return Reference to this string. |
| 1481 | * |
| 1482 | * Sets value of string to characters in the range [__first,__last). |
| 1483 | */ |
| 1484 | #if __cplusplus >= 201103L |
| 1485 | template<class _InputIterator, |
| 1486 | typename = std::_RequireInputIter<_InputIterator>> |
| 1487 | #else |
| 1488 | template<class _InputIterator> |
| 1489 | #endif |
| 1490 | basic_string& |
| 1491 | assign(_InputIterator __first, _InputIterator __last) |
| 1492 | { return this->replace(begin(), end(), __first, __last); } |
| 1493 | |
| 1494 | #if __cplusplus >= 201103L |
| 1495 | /** |
| 1496 | * @brief Set value to an initializer_list of characters. |
| 1497 | * @param __l The initializer_list of characters to assign. |
| 1498 | * @return Reference to this string. |
| 1499 | */ |
| 1500 | basic_string& |
| 1501 | assign(initializer_list<_CharT> __l) |
| 1502 | { return this->assign(__l.begin(), __l.size()); } |
| 1503 | #endif // C++11 |
| 1504 | |
| 1505 | #if __cplusplus >= 201703L |
| 1506 | /** |
| 1507 | * @brief Set value from a string_view. |
| 1508 | * @param __svt The source object convertible to string_view. |
| 1509 | * @return Reference to this string. |
| 1510 | */ |
| 1511 | template<typename _Tp> |
| 1512 | _If_sv<_Tp, basic_string&> |
| 1513 | assign(const _Tp& __svt) |
| 1514 | { |
| 1515 | __sv_type __sv = __svt; |
| 1516 | return this->assign(__sv.data(), __sv.size()); |
| 1517 | } |
| 1518 | |
| 1519 | /** |
| 1520 | * @brief Set value from a range of characters in a string_view. |
| 1521 | * @param __svt The source object convertible to string_view. |
| 1522 | * @param __pos The position in the string_view to assign from. |
| 1523 | * @param __n The number of characters to assign. |
| 1524 | * @return Reference to this string. |
| 1525 | */ |
| 1526 | template<typename _Tp> |
| 1527 | _If_sv<_Tp, basic_string&> |
| 1528 | assign(const _Tp& __svt, size_type __pos, size_type __n = npos) |
| 1529 | { |
| 1530 | __sv_type __sv = __svt; |
| 1531 | return _M_replace(size_type(0), this->size(), |
| 1532 | __sv.data() |
| 1533 | + std::__sv_check(__sv.size(), __pos, "basic_string::assign"), |
| 1534 | std::__sv_limit(__sv.size(), __pos, __n)); |
| 1535 | } |
| 1536 | #endif // C++17 |
| 1537 | |
| 1538 | #if __cplusplus >= 201103L |
| 1539 | /** |
| 1540 | * @brief Insert multiple characters. |
| 1541 | * @param __p Const_iterator referencing location in string to |
| 1542 | * insert at. |
| 1543 | * @param __n Number of characters to insert |
| 1544 | * @param __c The character to insert. |
| 1545 | * @return Iterator referencing the first inserted char. |
| 1546 | * @throw std::length_error If new length exceeds @c max_size(). |
| 1547 | * |
| 1548 | * Inserts @a __n copies of character @a __c starting at the |
| 1549 | * position referenced by iterator @a __p. If adding |
| 1550 | * characters causes the length to exceed max_size(), |
| 1551 | * length_error is thrown. The value of the string doesn't |
| 1552 | * change if an error is thrown. |
| 1553 | */ |
| 1554 | iterator |
| 1555 | insert(const_iterator __p, size_type __n, _CharT __c) |
| 1556 | { |
| 1557 | _GLIBCXX_DEBUG_PEDASSERT(__p >= begin() && __p <= end()); |
| 1558 | const size_type __pos = __p - begin(); |
| 1559 | this->replace(__p, __p, __n, __c); |
| 1560 | return iterator(this->_M_data() + __pos); |
| 1561 | } |
| 1562 | #else |
| 1563 | /** |
| 1564 | * @brief Insert multiple characters. |
| 1565 | * @param __p Iterator referencing location in string to insert at. |
| 1566 | * @param __n Number of characters to insert |
| 1567 | * @param __c The character to insert. |
| 1568 | * @throw std::length_error If new length exceeds @c max_size(). |
| 1569 | * |
| 1570 | * Inserts @a __n copies of character @a __c starting at the |
| 1571 | * position referenced by iterator @a __p. If adding |
| 1572 | * characters causes the length to exceed max_size(), |
| 1573 | * length_error is thrown. The value of the string doesn't |
| 1574 | * change if an error is thrown. |
| 1575 | */ |
| 1576 | void |
| 1577 | insert(iterator __p, size_type __n, _CharT __c) |
| 1578 | { this->replace(__p, __p, __n, __c); } |
| 1579 | #endif |
| 1580 | |
| 1581 | #if __cplusplus >= 201103L |
| 1582 | /** |
| 1583 | * @brief Insert a range of characters. |
| 1584 | * @param __p Const_iterator referencing location in string to |
| 1585 | * insert at. |
| 1586 | * @param __beg Start of range. |
| 1587 | * @param __end End of range. |
| 1588 | * @return Iterator referencing the first inserted char. |
| 1589 | * @throw std::length_error If new length exceeds @c max_size(). |
| 1590 | * |
| 1591 | * Inserts characters in range [beg,end). If adding characters |
| 1592 | * causes the length to exceed max_size(), length_error is |
| 1593 | * thrown. The value of the string doesn't change if an error |
| 1594 | * is thrown. |
| 1595 | */ |
| 1596 | template<class _InputIterator, |
| 1597 | typename = std::_RequireInputIter<_InputIterator>> |
| 1598 | iterator |
| 1599 | insert(const_iterator __p, _InputIterator __beg, _InputIterator __end) |
| 1600 | { |
| 1601 | _GLIBCXX_DEBUG_PEDASSERT(__p >= begin() && __p <= end()); |
| 1602 | const size_type __pos = __p - begin(); |
| 1603 | this->replace(__p, __p, __beg, __end); |
| 1604 | return iterator(this->_M_data() + __pos); |
| 1605 | } |
| 1606 | #else |
| 1607 | /** |
| 1608 | * @brief Insert a range of characters. |
| 1609 | * @param __p Iterator referencing location in string to insert at. |
| 1610 | * @param __beg Start of range. |
| 1611 | * @param __end End of range. |
| 1612 | * @throw std::length_error If new length exceeds @c max_size(). |
| 1613 | * |
| 1614 | * Inserts characters in range [__beg,__end). If adding |
| 1615 | * characters causes the length to exceed max_size(), |
| 1616 | * length_error is thrown. The value of the string doesn't |
| 1617 | * change if an error is thrown. |
| 1618 | */ |
| 1619 | template<class _InputIterator> |
| 1620 | void |
| 1621 | insert(iterator __p, _InputIterator __beg, _InputIterator __end) |
| 1622 | { this->replace(__p, __p, __beg, __end); } |
| 1623 | #endif |
| 1624 | |
| 1625 | #if __cplusplus >= 201103L |
| 1626 | /** |
| 1627 | * @brief Insert an initializer_list of characters. |
| 1628 | * @param __p Iterator referencing location in string to insert at. |
| 1629 | * @param __l The initializer_list of characters to insert. |
| 1630 | * @throw std::length_error If new length exceeds @c max_size(). |
| 1631 | */ |
| 1632 | iterator |
| 1633 | insert(const_iterator __p, initializer_list<_CharT> __l) |
| 1634 | { return this->insert(__p, __l.begin(), __l.end()); } |
| 1635 | |
| 1636 | #ifdef _GLIBCXX_DEFINING_STRING_INSTANTIATIONS |
| 1637 | // See PR libstdc++/83328 |
| 1638 | void |
| 1639 | insert(iterator __p, initializer_list<_CharT> __l) |
| 1640 | { |
| 1641 | _GLIBCXX_DEBUG_PEDASSERT(__p >= begin() && __p <= end()); |
| 1642 | this->insert(__p - begin(), __l.begin(), __l.size()); |
| 1643 | } |
| 1644 | #endif |
| 1645 | #endif // C++11 |
| 1646 | |
| 1647 | /** |
| 1648 | * @brief Insert value of a string. |
| 1649 | * @param __pos1 Position in string to insert at. |
| 1650 | * @param __str The string to insert. |
| 1651 | * @return Reference to this string. |
| 1652 | * @throw std::length_error If new length exceeds @c max_size(). |
| 1653 | * |
| 1654 | * Inserts value of @a __str starting at @a __pos1. If adding |
| 1655 | * characters causes the length to exceed max_size(), |
| 1656 | * length_error is thrown. The value of the string doesn't |
| 1657 | * change if an error is thrown. |
| 1658 | */ |
| 1659 | basic_string& |
| 1660 | insert(size_type __pos1, const basic_string& __str) |
| 1661 | { return this->replace(__pos1, size_type(0), |
| 1662 | __str._M_data(), __str.size()); } |
| 1663 | |
| 1664 | /** |
| 1665 | * @brief Insert a substring. |
| 1666 | * @param __pos1 Position in string to insert at. |
| 1667 | * @param __str The string to insert. |
| 1668 | * @param __pos2 Start of characters in str to insert. |
| 1669 | * @param __n Number of characters to insert. |
| 1670 | * @return Reference to this string. |
| 1671 | * @throw std::length_error If new length exceeds @c max_size(). |
| 1672 | * @throw std::out_of_range If @a pos1 > size() or |
| 1673 | * @a __pos2 > @a str.size(). |
| 1674 | * |
| 1675 | * Starting at @a pos1, insert @a __n character of @a __str |
| 1676 | * beginning with @a __pos2. If adding characters causes the |
| 1677 | * length to exceed max_size(), length_error is thrown. If @a |
| 1678 | * __pos1 is beyond the end of this string or @a __pos2 is |
| 1679 | * beyond the end of @a __str, out_of_range is thrown. The |
| 1680 | * value of the string doesn't change if an error is thrown. |
| 1681 | */ |
| 1682 | basic_string& |
| 1683 | insert(size_type __pos1, const basic_string& __str, |
| 1684 | size_type __pos2, size_type __n = npos) |
| 1685 | { return this->replace(__pos1, size_type(0), __str._M_data() |
| 1686 | + __str._M_check(__pos2, "basic_string::insert"), |
| 1687 | __str._M_limit(__pos2, __n)); } |
| 1688 | |
| 1689 | /** |
| 1690 | * @brief Insert a C substring. |
| 1691 | * @param __pos Position in string to insert at. |
| 1692 | * @param __s The C string to insert. |
| 1693 | * @param __n The number of characters to insert. |
| 1694 | * @return Reference to this string. |
| 1695 | * @throw std::length_error If new length exceeds @c max_size(). |
| 1696 | * @throw std::out_of_range If @a __pos is beyond the end of this |
| 1697 | * string. |
| 1698 | * |
| 1699 | * Inserts the first @a __n characters of @a __s starting at @a |
| 1700 | * __pos. If adding characters causes the length to exceed |
| 1701 | * max_size(), length_error is thrown. If @a __pos is beyond |
| 1702 | * end(), out_of_range is thrown. The value of the string |
| 1703 | * doesn't change if an error is thrown. |
| 1704 | */ |
| 1705 | basic_string& |
| 1706 | insert(size_type __pos, const _CharT* __s, size_type __n) |
| 1707 | { return this->replace(__pos, size_type(0), __s, __n); } |
| 1708 | |
| 1709 | /** |
| 1710 | * @brief Insert a C string. |
| 1711 | * @param __pos Position in string to insert at. |
| 1712 | * @param __s The C string to insert. |
| 1713 | * @return Reference to this string. |
| 1714 | * @throw std::length_error If new length exceeds @c max_size(). |
| 1715 | * @throw std::out_of_range If @a pos is beyond the end of this |
| 1716 | * string. |
| 1717 | * |
| 1718 | * Inserts the first @a n characters of @a __s starting at @a __pos. If |
| 1719 | * adding characters causes the length to exceed max_size(), |
| 1720 | * length_error is thrown. If @a __pos is beyond end(), out_of_range is |
| 1721 | * thrown. The value of the string doesn't change if an error is |
| 1722 | * thrown. |
| 1723 | */ |
| 1724 | basic_string& |
| 1725 | insert(size_type __pos, const _CharT* __s) |
| 1726 | { |
| 1727 | __glibcxx_requires_string(__s); |
| 1728 | return this->replace(__pos, size_type(0), __s, |
| 1729 | traits_type::length(__s)); |
| 1730 | } |
| 1731 | |
| 1732 | /** |
| 1733 | * @brief Insert multiple characters. |
| 1734 | * @param __pos Index in string to insert at. |
| 1735 | * @param __n Number of characters to insert |
| 1736 | * @param __c The character to insert. |
| 1737 | * @return Reference to this string. |
| 1738 | * @throw std::length_error If new length exceeds @c max_size(). |
| 1739 | * @throw std::out_of_range If @a __pos is beyond the end of this |
| 1740 | * string. |
| 1741 | * |
| 1742 | * Inserts @a __n copies of character @a __c starting at index |
| 1743 | * @a __pos. If adding characters causes the length to exceed |
| 1744 | * max_size(), length_error is thrown. If @a __pos > length(), |
| 1745 | * out_of_range is thrown. The value of the string doesn't |
| 1746 | * change if an error is thrown. |
| 1747 | */ |
| 1748 | basic_string& |
| 1749 | insert(size_type __pos, size_type __n, _CharT __c) |
| 1750 | { return _M_replace_aux(_M_check(__pos, "basic_string::insert"), |
| 1751 | size_type(0), __n, __c); } |
| 1752 | |
| 1753 | /** |
| 1754 | * @brief Insert one character. |
| 1755 | * @param __p Iterator referencing position in string to insert at. |
| 1756 | * @param __c The character to insert. |
| 1757 | * @return Iterator referencing newly inserted char. |
| 1758 | * @throw std::length_error If new length exceeds @c max_size(). |
| 1759 | * |
| 1760 | * Inserts character @a __c at position referenced by @a __p. |
| 1761 | * If adding character causes the length to exceed max_size(), |
| 1762 | * length_error is thrown. If @a __p is beyond end of string, |
| 1763 | * out_of_range is thrown. The value of the string doesn't |
| 1764 | * change if an error is thrown. |
| 1765 | */ |
| 1766 | iterator |
| 1767 | insert(__const_iterator __p, _CharT __c) |
| 1768 | { |
| 1769 | _GLIBCXX_DEBUG_PEDASSERT(__p >= begin() && __p <= end()); |
| 1770 | const size_type __pos = __p - begin(); |
| 1771 | _M_replace_aux(__pos, size_type(0), size_type(1), __c); |
| 1772 | return iterator(_M_data() + __pos); |
| 1773 | } |
| 1774 | |
| 1775 | #if __cplusplus >= 201703L |
| 1776 | /** |
| 1777 | * @brief Insert a string_view. |
| 1778 | * @param __pos Position in string to insert at. |
| 1779 | * @param __svt The object convertible to string_view to insert. |
| 1780 | * @return Reference to this string. |
| 1781 | */ |
| 1782 | template<typename _Tp> |
| 1783 | _If_sv<_Tp, basic_string&> |
| 1784 | insert(size_type __pos, const _Tp& __svt) |
| 1785 | { |
| 1786 | __sv_type __sv = __svt; |
| 1787 | return this->insert(__pos, __sv.data(), __sv.size()); |
| 1788 | } |
| 1789 | |
| 1790 | /** |
| 1791 | * @brief Insert a string_view. |
| 1792 | * @param __pos1 Position in string to insert at. |
| 1793 | * @param __svt The object convertible to string_view to insert from. |
| 1794 | * @param __pos2 Start of characters in str to insert. |
| 1795 | * @param __n The number of characters to insert. |
| 1796 | * @return Reference to this string. |
| 1797 | */ |
| 1798 | template<typename _Tp> |
| 1799 | _If_sv<_Tp, basic_string&> |
| 1800 | insert(size_type __pos1, const _Tp& __svt, |
| 1801 | size_type __pos2, size_type __n = npos) |
| 1802 | { |
| 1803 | __sv_type __sv = __svt; |
| 1804 | return this->replace(__pos1, size_type(0), |
| 1805 | __sv.data() |
| 1806 | + std::__sv_check(__sv.size(), __pos2, "basic_string::insert"), |
| 1807 | std::__sv_limit(__sv.size(), __pos2, __n)); |
| 1808 | } |
| 1809 | #endif // C++17 |
| 1810 | |
| 1811 | /** |
| 1812 | * @brief Remove characters. |
| 1813 | * @param __pos Index of first character to remove (default 0). |
| 1814 | * @param __n Number of characters to remove (default remainder). |
| 1815 | * @return Reference to this string. |
| 1816 | * @throw std::out_of_range If @a pos is beyond the end of this |
| 1817 | * string. |
| 1818 | * |
| 1819 | * Removes @a __n characters from this string starting at @a |
| 1820 | * __pos. The length of the string is reduced by @a __n. If |
| 1821 | * there are < @a __n characters to remove, the remainder of |
| 1822 | * the string is truncated. If @a __p is beyond end of string, |
| 1823 | * out_of_range is thrown. The value of the string doesn't |
| 1824 | * change if an error is thrown. |
| 1825 | */ |
| 1826 | basic_string& |
| 1827 | erase(size_type __pos = 0, size_type __n = npos) |
| 1828 | { |
| 1829 | _M_check(__pos, "basic_string::erase"); |
| 1830 | if (__n == npos) |
| 1831 | this->_M_set_length(__pos); |
| 1832 | else if (__n != 0) |
| 1833 | this->_M_erase(__pos, _M_limit(__pos, __n)); |
| 1834 | return *this; |
| 1835 | } |
| 1836 | |
| 1837 | /** |
| 1838 | * @brief Remove one character. |
| 1839 | * @param __position Iterator referencing the character to remove. |
| 1840 | * @return iterator referencing same location after removal. |
| 1841 | * |
| 1842 | * Removes the character at @a __position from this string. The value |
| 1843 | * of the string doesn't change if an error is thrown. |
| 1844 | */ |
| 1845 | iterator |
| 1846 | erase(__const_iterator __position) |
| 1847 | { |
| 1848 | _GLIBCXX_DEBUG_PEDASSERT(__position >= begin() |
| 1849 | && __position < end()); |
| 1850 | const size_type __pos = __position - begin(); |
| 1851 | this->_M_erase(__pos, size_type(1)); |
| 1852 | return iterator(_M_data() + __pos); |
| 1853 | } |
| 1854 | |
| 1855 | /** |
| 1856 | * @brief Remove a range of characters. |
| 1857 | * @param __first Iterator referencing the first character to remove. |
| 1858 | * @param __last Iterator referencing the end of the range. |
| 1859 | * @return Iterator referencing location of first after removal. |
| 1860 | * |
| 1861 | * Removes the characters in the range [first,last) from this string. |
| 1862 | * The value of the string doesn't change if an error is thrown. |
| 1863 | */ |
| 1864 | iterator |
| 1865 | erase(__const_iterator __first, __const_iterator __last) |
| 1866 | { |
| 1867 | _GLIBCXX_DEBUG_PEDASSERT(__first >= begin() && __first <= __last |
| 1868 | && __last <= end()); |
| 1869 | const size_type __pos = __first - begin(); |
| 1870 | if (__last == end()) |
| 1871 | this->_M_set_length(__pos); |
| 1872 | else |
| 1873 | this->_M_erase(__pos, __last - __first); |
| 1874 | return iterator(this->_M_data() + __pos); |
| 1875 | } |
| 1876 | |
| 1877 | #if __cplusplus >= 201103L |
| 1878 | /** |
| 1879 | * @brief Remove the last character. |
| 1880 | * |
| 1881 | * The string must be non-empty. |
| 1882 | */ |
| 1883 | void |
| 1884 | pop_back() noexcept |
| 1885 | { |
| 1886 | __glibcxx_assert(!empty()); |
| 1887 | _M_erase(size() - 1, 1); |
| 1888 | } |
| 1889 | #endif // C++11 |
| 1890 | |
| 1891 | /** |
| 1892 | * @brief Replace characters with value from another string. |
| 1893 | * @param __pos Index of first character to replace. |
| 1894 | * @param __n Number of characters to be replaced. |
| 1895 | * @param __str String to insert. |
| 1896 | * @return Reference to this string. |
| 1897 | * @throw std::out_of_range If @a pos is beyond the end of this |
| 1898 | * string. |
| 1899 | * @throw std::length_error If new length exceeds @c max_size(). |
| 1900 | * |
| 1901 | * Removes the characters in the range [__pos,__pos+__n) from |
| 1902 | * this string. In place, the value of @a __str is inserted. |
| 1903 | * If @a __pos is beyond end of string, out_of_range is thrown. |
| 1904 | * If the length of the result exceeds max_size(), length_error |
| 1905 | * is thrown. The value of the string doesn't change if an |
| 1906 | * error is thrown. |
| 1907 | */ |
| 1908 | basic_string& |
| 1909 | replace(size_type __pos, size_type __n, const basic_string& __str) |
| 1910 | { return this->replace(__pos, __n, __str._M_data(), __str.size()); } |
| 1911 | |
| 1912 | /** |
| 1913 | * @brief Replace characters with value from another string. |
| 1914 | * @param __pos1 Index of first character to replace. |
| 1915 | * @param __n1 Number of characters to be replaced. |
| 1916 | * @param __str String to insert. |
| 1917 | * @param __pos2 Index of first character of str to use. |
| 1918 | * @param __n2 Number of characters from str to use. |
| 1919 | * @return Reference to this string. |
| 1920 | * @throw std::out_of_range If @a __pos1 > size() or @a __pos2 > |
| 1921 | * __str.size(). |
| 1922 | * @throw std::length_error If new length exceeds @c max_size(). |
| 1923 | * |
| 1924 | * Removes the characters in the range [__pos1,__pos1 + n) from this |
| 1925 | * string. In place, the value of @a __str is inserted. If @a __pos is |
| 1926 | * beyond end of string, out_of_range is thrown. If the length of the |
| 1927 | * result exceeds max_size(), length_error is thrown. The value of the |
| 1928 | * string doesn't change if an error is thrown. |
| 1929 | */ |
| 1930 | basic_string& |
| 1931 | replace(size_type __pos1, size_type __n1, const basic_string& __str, |
| 1932 | size_type __pos2, size_type __n2 = npos) |
| 1933 | { return this->replace(__pos1, __n1, __str._M_data() |
| 1934 | + __str._M_check(__pos2, "basic_string::replace"), |
| 1935 | __str._M_limit(__pos2, __n2)); } |
| 1936 | |
| 1937 | /** |
| 1938 | * @brief Replace characters with value of a C substring. |
| 1939 | * @param __pos Index of first character to replace. |
| 1940 | * @param __n1 Number of characters to be replaced. |
| 1941 | * @param __s C string to insert. |
| 1942 | * @param __n2 Number of characters from @a s to use. |
| 1943 | * @return Reference to this string. |
| 1944 | * @throw std::out_of_range If @a pos1 > size(). |
| 1945 | * @throw std::length_error If new length exceeds @c max_size(). |
| 1946 | * |
| 1947 | * Removes the characters in the range [__pos,__pos + __n1) |
| 1948 | * from this string. In place, the first @a __n2 characters of |
| 1949 | * @a __s are inserted, or all of @a __s if @a __n2 is too large. If |
| 1950 | * @a __pos is beyond end of string, out_of_range is thrown. If |
| 1951 | * the length of result exceeds max_size(), length_error is |
| 1952 | * thrown. The value of the string doesn't change if an error |
| 1953 | * is thrown. |
| 1954 | */ |
| 1955 | basic_string& |
| 1956 | replace(size_type __pos, size_type __n1, const _CharT* __s, |
| 1957 | size_type __n2) |
| 1958 | { |
| 1959 | __glibcxx_requires_string_len(__s, __n2); |
| 1960 | return _M_replace(_M_check(__pos, "basic_string::replace"), |
| 1961 | _M_limit(__pos, __n1), __s, __n2); |
| 1962 | } |
| 1963 | |
| 1964 | /** |
| 1965 | * @brief Replace characters with value of a C string. |
| 1966 | * @param __pos Index of first character to replace. |
| 1967 | * @param __n1 Number of characters to be replaced. |
| 1968 | * @param __s C string to insert. |
| 1969 | * @return Reference to this string. |
| 1970 | * @throw std::out_of_range If @a pos > size(). |
| 1971 | * @throw std::length_error If new length exceeds @c max_size(). |
| 1972 | * |
| 1973 | * Removes the characters in the range [__pos,__pos + __n1) |
| 1974 | * from this string. In place, the characters of @a __s are |
| 1975 | * inserted. If @a __pos is beyond end of string, out_of_range |
| 1976 | * is thrown. If the length of result exceeds max_size(), |
| 1977 | * length_error is thrown. The value of the string doesn't |
| 1978 | * change if an error is thrown. |
| 1979 | */ |
| 1980 | basic_string& |
| 1981 | replace(size_type __pos, size_type __n1, const _CharT* __s) |
| 1982 | { |
| 1983 | __glibcxx_requires_string(__s); |
| 1984 | return this->replace(__pos, __n1, __s, traits_type::length(__s)); |
| 1985 | } |
| 1986 | |
| 1987 | /** |
| 1988 | * @brief Replace characters with multiple characters. |
| 1989 | * @param __pos Index of first character to replace. |
| 1990 | * @param __n1 Number of characters to be replaced. |
| 1991 | * @param __n2 Number of characters to insert. |
| 1992 | * @param __c Character to insert. |
| 1993 | * @return Reference to this string. |
| 1994 | * @throw std::out_of_range If @a __pos > size(). |
| 1995 | * @throw std::length_error If new length exceeds @c max_size(). |
| 1996 | * |
| 1997 | * Removes the characters in the range [pos,pos + n1) from this |
| 1998 | * string. In place, @a __n2 copies of @a __c are inserted. |
| 1999 | * If @a __pos is beyond end of string, out_of_range is thrown. |
| 2000 | * If the length of result exceeds max_size(), length_error is |
| 2001 | * thrown. The value of the string doesn't change if an error |
| 2002 | * is thrown. |
| 2003 | */ |
| 2004 | basic_string& |
| 2005 | replace(size_type __pos, size_type __n1, size_type __n2, _CharT __c) |
| 2006 | { return _M_replace_aux(_M_check(__pos, "basic_string::replace"), |
| 2007 | _M_limit(__pos, __n1), __n2, __c); } |
| 2008 | |
| 2009 | /** |
| 2010 | * @brief Replace range of characters with string. |
| 2011 | * @param __i1 Iterator referencing start of range to replace. |
| 2012 | * @param __i2 Iterator referencing end of range to replace. |
| 2013 | * @param __str String value to insert. |
| 2014 | * @return Reference to this string. |
| 2015 | * @throw std::length_error If new length exceeds @c max_size(). |
| 2016 | * |
| 2017 | * Removes the characters in the range [__i1,__i2). In place, |
| 2018 | * the value of @a __str is inserted. If the length of result |
| 2019 | * exceeds max_size(), length_error is thrown. The value of |
| 2020 | * the string doesn't change if an error is thrown. |
| 2021 | */ |
| 2022 | basic_string& |
| 2023 | replace(__const_iterator __i1, __const_iterator __i2, |
| 2024 | const basic_string& __str) |
| 2025 | { return this->replace(__i1, __i2, __str._M_data(), __str.size()); } |
| 2026 | |
| 2027 | /** |
| 2028 | * @brief Replace range of characters with C substring. |
| 2029 | * @param __i1 Iterator referencing start of range to replace. |
| 2030 | * @param __i2 Iterator referencing end of range to replace. |
| 2031 | * @param __s C string value to insert. |
| 2032 | * @param __n Number of characters from s to insert. |
| 2033 | * @return Reference to this string. |
| 2034 | * @throw std::length_error If new length exceeds @c max_size(). |
| 2035 | * |
| 2036 | * Removes the characters in the range [__i1,__i2). In place, |
| 2037 | * the first @a __n characters of @a __s are inserted. If the |
| 2038 | * length of result exceeds max_size(), length_error is thrown. |
| 2039 | * The value of the string doesn't change if an error is |
| 2040 | * thrown. |
| 2041 | */ |
| 2042 | basic_string& |
| 2043 | replace(__const_iterator __i1, __const_iterator __i2, |
| 2044 | const _CharT* __s, size_type __n) |
| 2045 | { |
| 2046 | _GLIBCXX_DEBUG_PEDASSERT(begin() <= __i1 && __i1 <= __i2 |
| 2047 | && __i2 <= end()); |
| 2048 | return this->replace(__i1 - begin(), __i2 - __i1, __s, __n); |
| 2049 | } |
| 2050 | |
| 2051 | /** |
| 2052 | * @brief Replace range of characters with C string. |
| 2053 | * @param __i1 Iterator referencing start of range to replace. |
| 2054 | * @param __i2 Iterator referencing end of range to replace. |
| 2055 | * @param __s C string value to insert. |
| 2056 | * @return Reference to this string. |
| 2057 | * @throw std::length_error If new length exceeds @c max_size(). |
| 2058 | * |
| 2059 | * Removes the characters in the range [__i1,__i2). In place, |
| 2060 | * the characters of @a __s are inserted. If the length of |
| 2061 | * result exceeds max_size(), length_error is thrown. The |
| 2062 | * value of the string doesn't change if an error is thrown. |
| 2063 | */ |
| 2064 | basic_string& |
| 2065 | replace(__const_iterator __i1, __const_iterator __i2, const _CharT* __s) |
| 2066 | { |
| 2067 | __glibcxx_requires_string(__s); |
| 2068 | return this->replace(__i1, __i2, __s, traits_type::length(__s)); |
| 2069 | } |
| 2070 | |
| 2071 | /** |
| 2072 | * @brief Replace range of characters with multiple characters |
| 2073 | * @param __i1 Iterator referencing start of range to replace. |
| 2074 | * @param __i2 Iterator referencing end of range to replace. |
| 2075 | * @param __n Number of characters to insert. |
| 2076 | * @param __c Character to insert. |
| 2077 | * @return Reference to this string. |
| 2078 | * @throw std::length_error If new length exceeds @c max_size(). |
| 2079 | * |
| 2080 | * Removes the characters in the range [__i1,__i2). In place, |
| 2081 | * @a __n copies of @a __c are inserted. If the length of |
| 2082 | * result exceeds max_size(), length_error is thrown. The |
| 2083 | * value of the string doesn't change if an error is thrown. |
| 2084 | */ |
| 2085 | basic_string& |
| 2086 | replace(__const_iterator __i1, __const_iterator __i2, size_type __n, |
| 2087 | _CharT __c) |
| 2088 | { |
| 2089 | _GLIBCXX_DEBUG_PEDASSERT(begin() <= __i1 && __i1 <= __i2 |
| 2090 | && __i2 <= end()); |
| 2091 | return _M_replace_aux(__i1 - begin(), __i2 - __i1, __n, __c); |
| 2092 | } |
| 2093 | |
| 2094 | /** |
| 2095 | * @brief Replace range of characters with range. |
| 2096 | * @param __i1 Iterator referencing start of range to replace. |
| 2097 | * @param __i2 Iterator referencing end of range to replace. |
| 2098 | * @param __k1 Iterator referencing start of range to insert. |
| 2099 | * @param __k2 Iterator referencing end of range to insert. |
| 2100 | * @return Reference to this string. |
| 2101 | * @throw std::length_error If new length exceeds @c max_size(). |
| 2102 | * |
| 2103 | * Removes the characters in the range [__i1,__i2). In place, |
| 2104 | * characters in the range [__k1,__k2) are inserted. If the |
| 2105 | * length of result exceeds max_size(), length_error is thrown. |
| 2106 | * The value of the string doesn't change if an error is |
| 2107 | * thrown. |
| 2108 | */ |
| 2109 | #if __cplusplus >= 201103L |
| 2110 | template<class _InputIterator, |
| 2111 | typename = std::_RequireInputIter<_InputIterator>> |
| 2112 | basic_string& |
| 2113 | replace(const_iterator __i1, const_iterator __i2, |
| 2114 | _InputIterator __k1, _InputIterator __k2) |
| 2115 | { |
| 2116 | _GLIBCXX_DEBUG_PEDASSERT(begin() <= __i1 && __i1 <= __i2 |
| 2117 | && __i2 <= end()); |
| 2118 | __glibcxx_requires_valid_range(__k1, __k2); |
| 2119 | return this->_M_replace_dispatch(__i1, __i2, __k1, __k2, |
| 2120 | std::__false_type()); |
| 2121 | } |
| 2122 | #else |
| 2123 | template<class _InputIterator> |
| 2124 | #ifdef _GLIBCXX_DISAMBIGUATE_REPLACE_INST |
| 2125 | typename __enable_if_not_native_iterator<_InputIterator>::__type |
| 2126 | #else |
| 2127 | basic_string& |
| 2128 | #endif |
| 2129 | replace(iterator __i1, iterator __i2, |
| 2130 | _InputIterator __k1, _InputIterator __k2) |
| 2131 | { |
| 2132 | _GLIBCXX_DEBUG_PEDASSERT(begin() <= __i1 && __i1 <= __i2 |
| 2133 | && __i2 <= end()); |
| 2134 | __glibcxx_requires_valid_range(__k1, __k2); |
| 2135 | typedef typename std::__is_integer<_InputIterator>::__type _Integral; |
| 2136 | return _M_replace_dispatch(__i1, __i2, __k1, __k2, _Integral()); |
| 2137 | } |
| 2138 | #endif |
| 2139 | |
| 2140 | // Specializations for the common case of pointer and iterator: |
| 2141 | // useful to avoid the overhead of temporary buffering in _M_replace. |
| 2142 | basic_string& |
| 2143 | replace(__const_iterator __i1, __const_iterator __i2, |
| 2144 | _CharT* __k1, _CharT* __k2) |
| 2145 | { |
| 2146 | _GLIBCXX_DEBUG_PEDASSERT(begin() <= __i1 && __i1 <= __i2 |
| 2147 | && __i2 <= end()); |
| 2148 | __glibcxx_requires_valid_range(__k1, __k2); |
| 2149 | return this->replace(__i1 - begin(), __i2 - __i1, |
| 2150 | __k1, __k2 - __k1); |
| 2151 | } |
| 2152 | |
| 2153 | basic_string& |
| 2154 | replace(__const_iterator __i1, __const_iterator __i2, |
| 2155 | const _CharT* __k1, const _CharT* __k2) |
| 2156 | { |
| 2157 | _GLIBCXX_DEBUG_PEDASSERT(begin() <= __i1 && __i1 <= __i2 |
| 2158 | && __i2 <= end()); |
| 2159 | __glibcxx_requires_valid_range(__k1, __k2); |
| 2160 | return this->replace(__i1 - begin(), __i2 - __i1, |
| 2161 | __k1, __k2 - __k1); |
| 2162 | } |
| 2163 | |
| 2164 | basic_string& |
| 2165 | replace(__const_iterator __i1, __const_iterator __i2, |
| 2166 | iterator __k1, iterator __k2) |
| 2167 | { |
| 2168 | _GLIBCXX_DEBUG_PEDASSERT(begin() <= __i1 && __i1 <= __i2 |
| 2169 | && __i2 <= end()); |
| 2170 | __glibcxx_requires_valid_range(__k1, __k2); |
| 2171 | return this->replace(__i1 - begin(), __i2 - __i1, |
| 2172 | __k1.base(), __k2 - __k1); |
| 2173 | } |
| 2174 | |
| 2175 | basic_string& |
| 2176 | replace(__const_iterator __i1, __const_iterator __i2, |
| 2177 | const_iterator __k1, const_iterator __k2) |
| 2178 | { |
| 2179 | _GLIBCXX_DEBUG_PEDASSERT(begin() <= __i1 && __i1 <= __i2 |
| 2180 | && __i2 <= end()); |
| 2181 | __glibcxx_requires_valid_range(__k1, __k2); |
| 2182 | return this->replace(__i1 - begin(), __i2 - __i1, |
| 2183 | __k1.base(), __k2 - __k1); |
| 2184 | } |
| 2185 | |
| 2186 | #if __cplusplus >= 201103L |
| 2187 | /** |
| 2188 | * @brief Replace range of characters with initializer_list. |
| 2189 | * @param __i1 Iterator referencing start of range to replace. |
| 2190 | * @param __i2 Iterator referencing end of range to replace. |
| 2191 | * @param __l The initializer_list of characters to insert. |
| 2192 | * @return Reference to this string. |
| 2193 | * @throw std::length_error If new length exceeds @c max_size(). |
| 2194 | * |
| 2195 | * Removes the characters in the range [__i1,__i2). In place, |
| 2196 | * characters in the range [__k1,__k2) are inserted. If the |
| 2197 | * length of result exceeds max_size(), length_error is thrown. |
| 2198 | * The value of the string doesn't change if an error is |
| 2199 | * thrown. |
| 2200 | */ |
| 2201 | basic_string& replace(const_iterator __i1, const_iterator __i2, |
| 2202 | initializer_list<_CharT> __l) |
| 2203 | { return this->replace(__i1, __i2, __l.begin(), __l.size()); } |
| 2204 | #endif // C++11 |
| 2205 | |
| 2206 | #if __cplusplus >= 201703L |
| 2207 | /** |
| 2208 | * @brief Replace range of characters with string_view. |
| 2209 | * @param __pos The position to replace at. |
| 2210 | * @param __n The number of characters to replace. |
| 2211 | * @param __svt The object convertible to string_view to insert. |
| 2212 | * @return Reference to this string. |
| 2213 | */ |
| 2214 | template<typename _Tp> |
| 2215 | _If_sv<_Tp, basic_string&> |
| 2216 | replace(size_type __pos, size_type __n, const _Tp& __svt) |
| 2217 | { |
| 2218 | __sv_type __sv = __svt; |
| 2219 | return this->replace(__pos, __n, __sv.data(), __sv.size()); |
| 2220 | } |
| 2221 | |
| 2222 | /** |
| 2223 | * @brief Replace range of characters with string_view. |
| 2224 | * @param __pos1 The position to replace at. |
| 2225 | * @param __n1 The number of characters to replace. |
| 2226 | * @param __svt The object convertible to string_view to insert from. |
| 2227 | * @param __pos2 The position in the string_view to insert from. |
| 2228 | * @param __n2 The number of characters to insert. |
| 2229 | * @return Reference to this string. |
| 2230 | */ |
| 2231 | template<typename _Tp> |
| 2232 | _If_sv<_Tp, basic_string&> |
| 2233 | replace(size_type __pos1, size_type __n1, const _Tp& __svt, |
| 2234 | size_type __pos2, size_type __n2 = npos) |
| 2235 | { |
| 2236 | __sv_type __sv = __svt; |
| 2237 | return this->replace(__pos1, __n1, |
| 2238 | __sv.data() |
| 2239 | + std::__sv_check(__sv.size(), __pos2, "basic_string::replace"), |
| 2240 | std::__sv_limit(__sv.size(), __pos2, __n2)); |
| 2241 | } |
| 2242 | |
| 2243 | /** |
| 2244 | * @brief Replace range of characters with string_view. |
| 2245 | * @param __i1 An iterator referencing the start position |
| 2246 | to replace at. |
| 2247 | * @param __i2 An iterator referencing the end position |
| 2248 | for the replace. |
| 2249 | * @param __svt The object convertible to string_view to insert from. |
| 2250 | * @return Reference to this string. |
| 2251 | */ |
| 2252 | template<typename _Tp> |
| 2253 | _If_sv<_Tp, basic_string&> |
| 2254 | replace(const_iterator __i1, const_iterator __i2, const _Tp& __svt) |
| 2255 | { |
| 2256 | __sv_type __sv = __svt; |
| 2257 | return this->replace(__i1 - begin(), __i2 - __i1, __sv); |
| 2258 | } |
| 2259 | #endif // C++17 |
| 2260 | |
| 2261 | private: |
| 2262 | template<class _Integer> |
| 2263 | basic_string& |
| 2264 | _M_replace_dispatch(const_iterator __i1, const_iterator __i2, |
| 2265 | _Integer __n, _Integer __val, __true_type) |
| 2266 | { return _M_replace_aux(__i1 - begin(), __i2 - __i1, __n, __val); } |
| 2267 | |
| 2268 | template<class _InputIterator> |
| 2269 | basic_string& |
| 2270 | _M_replace_dispatch(const_iterator __i1, const_iterator __i2, |
| 2271 | _InputIterator __k1, _InputIterator __k2, |
| 2272 | __false_type); |
| 2273 | |
| 2274 | basic_string& |
| 2275 | _M_replace_aux(size_type __pos1, size_type __n1, size_type __n2, |
| 2276 | _CharT __c); |
| 2277 | |
| 2278 | basic_string& |
| 2279 | _M_replace(size_type __pos, size_type __len1, const _CharT* __s, |
| 2280 | const size_type __len2); |
| 2281 | |
| 2282 | basic_string& |
| 2283 | _M_append(const _CharT* __s, size_type __n); |
| 2284 | |
| 2285 | public: |
| 2286 | |
| 2287 | /** |
| 2288 | * @brief Copy substring into C string. |
| 2289 | * @param __s C string to copy value into. |
| 2290 | * @param __n Number of characters to copy. |
| 2291 | * @param __pos Index of first character to copy. |
| 2292 | * @return Number of characters actually copied |
| 2293 | * @throw std::out_of_range If __pos > size(). |
| 2294 | * |
| 2295 | * Copies up to @a __n characters starting at @a __pos into the |
| 2296 | * C string @a __s. If @a __pos is %greater than size(), |
| 2297 | * out_of_range is thrown. |
| 2298 | */ |
| 2299 | size_type |
| 2300 | copy(_CharT* __s, size_type __n, size_type __pos = 0) const; |
| 2301 | |
| 2302 | /** |
| 2303 | * @brief Swap contents with another string. |
| 2304 | * @param __s String to swap with. |
| 2305 | * |
| 2306 | * Exchanges the contents of this string with that of @a __s in constant |
| 2307 | * time. |
| 2308 | */ |
| 2309 | void |
| 2310 | swap(basic_string& __s) _GLIBCXX_NOEXCEPT; |
| 2311 | |
| 2312 | // String operations: |
| 2313 | /** |
| 2314 | * @brief Return const pointer to null-terminated contents. |
| 2315 | * |
| 2316 | * This is a handle to internal data. Do not modify or dire things may |
| 2317 | * happen. |
| 2318 | */ |
| 2319 | const _CharT* |
| 2320 | c_str() const _GLIBCXX_NOEXCEPT |
| 2321 | { return _M_data(); } |
| 2322 | |
| 2323 | /** |
| 2324 | * @brief Return const pointer to contents. |
| 2325 | * |
| 2326 | * This is a pointer to internal data. It is undefined to modify |
| 2327 | * the contents through the returned pointer. To get a pointer that |
| 2328 | * allows modifying the contents use @c &str[0] instead, |
| 2329 | * (or in C++17 the non-const @c str.data() overload). |
| 2330 | */ |
| 2331 | const _CharT* |
| 2332 | data() const _GLIBCXX_NOEXCEPT |
| 2333 | { return _M_data(); } |
| 2334 | |
| 2335 | #if __cplusplus >= 201703L |
| 2336 | /** |
| 2337 | * @brief Return non-const pointer to contents. |
| 2338 | * |
| 2339 | * This is a pointer to the character sequence held by the string. |
| 2340 | * Modifying the characters in the sequence is allowed. |
| 2341 | */ |
| 2342 | _CharT* |
| 2343 | data() noexcept |
| 2344 | { return _M_data(); } |
| 2345 | #endif |
| 2346 | |
| 2347 | /** |
| 2348 | * @brief Return copy of allocator used to construct this string. |
| 2349 | */ |
| 2350 | allocator_type |
| 2351 | get_allocator() const _GLIBCXX_NOEXCEPT |
| 2352 | { return _M_get_allocator(); } |
| 2353 | |
| 2354 | /** |
| 2355 | * @brief Find position of a C substring. |
| 2356 | * @param __s C string to locate. |
| 2357 | * @param __pos Index of character to search from. |
| 2358 | * @param __n Number of characters from @a s to search for. |
| 2359 | * @return Index of start of first occurrence. |
| 2360 | * |
| 2361 | * Starting from @a __pos, searches forward for the first @a |
| 2362 | * __n characters in @a __s within this string. If found, |
| 2363 | * returns the index where it begins. If not found, returns |
| 2364 | * npos. |
| 2365 | */ |
| 2366 | size_type |
| 2367 | find(const _CharT* __s, size_type __pos, size_type __n) const |
| 2368 | _GLIBCXX_NOEXCEPT; |
| 2369 | |
| 2370 | /** |
| 2371 | * @brief Find position of a string. |
| 2372 | * @param __str String to locate. |
| 2373 | * @param __pos Index of character to search from (default 0). |
| 2374 | * @return Index of start of first occurrence. |
| 2375 | * |
| 2376 | * Starting from @a __pos, searches forward for value of @a __str within |
| 2377 | * this string. If found, returns the index where it begins. If not |
| 2378 | * found, returns npos. |
| 2379 | */ |
| 2380 | size_type |
| 2381 | find(const basic_string& __str, size_type __pos = 0) const |
| 2382 | _GLIBCXX_NOEXCEPT |
| 2383 | { return this->find(__str.data(), __pos, __str.size()); } |
| 2384 | |
| 2385 | #if __cplusplus >= 201703L |
| 2386 | /** |
| 2387 | * @brief Find position of a string_view. |
| 2388 | * @param __svt The object convertible to string_view to locate. |
| 2389 | * @param __pos Index of character to search from (default 0). |
| 2390 | * @return Index of start of first occurrence. |
| 2391 | */ |
| 2392 | template<typename _Tp> |
| 2393 | _If_sv<_Tp, size_type> |
| 2394 | find(const _Tp& __svt, size_type __pos = 0) const |
| 2395 | noexcept(is_same<_Tp, __sv_type>::value) |
| 2396 | { |
| 2397 | __sv_type __sv = __svt; |
| 2398 | return this->find(__sv.data(), __pos, __sv.size()); |
| 2399 | } |
| 2400 | #endif // C++17 |
| 2401 | |
| 2402 | /** |
| 2403 | * @brief Find position of a C string. |
| 2404 | * @param __s C string to locate. |
| 2405 | * @param __pos Index of character to search from (default 0). |
| 2406 | * @return Index of start of first occurrence. |
| 2407 | * |
| 2408 | * Starting from @a __pos, searches forward for the value of @a |
| 2409 | * __s within this string. If found, returns the index where |
| 2410 | * it begins. If not found, returns npos. |
| 2411 | */ |
| 2412 | size_type |
| 2413 | find(const _CharT* __s, size_type __pos = 0) const _GLIBCXX_NOEXCEPT |
| 2414 | { |
| 2415 | __glibcxx_requires_string(__s); |
| 2416 | return this->find(__s, __pos, traits_type::length(__s)); |
| 2417 | } |
| 2418 | |
| 2419 | /** |
| 2420 | * @brief Find position of a character. |
| 2421 | * @param __c Character to locate. |
| 2422 | * @param __pos Index of character to search from (default 0). |
| 2423 | * @return Index of first occurrence. |
| 2424 | * |
| 2425 | * Starting from @a __pos, searches forward for @a __c within |
| 2426 | * this string. If found, returns the index where it was |
| 2427 | * found. If not found, returns npos. |
| 2428 | */ |
| 2429 | size_type |
| 2430 | find(_CharT __c, size_type __pos = 0) const _GLIBCXX_NOEXCEPT; |
| 2431 | |
| 2432 | /** |
| 2433 | * @brief Find last position of a string. |
| 2434 | * @param __str String to locate. |
| 2435 | * @param __pos Index of character to search back from (default end). |
| 2436 | * @return Index of start of last occurrence. |
| 2437 | * |
| 2438 | * Starting from @a __pos, searches backward for value of @a |
| 2439 | * __str within this string. If found, returns the index where |
| 2440 | * it begins. If not found, returns npos. |
| 2441 | */ |
| 2442 | size_type |
| 2443 | rfind(const basic_string& __str, size_type __pos = npos) const |
| 2444 | _GLIBCXX_NOEXCEPT |
| 2445 | { return this->rfind(__str.data(), __pos, __str.size()); } |
| 2446 | |
| 2447 | #if __cplusplus >= 201703L |
| 2448 | /** |
| 2449 | * @brief Find last position of a string_view. |
| 2450 | * @param __svt The object convertible to string_view to locate. |
| 2451 | * @param __pos Index of character to search back from (default end). |
| 2452 | * @return Index of start of last occurrence. |
| 2453 | */ |
| 2454 | template<typename _Tp> |
| 2455 | _If_sv<_Tp, size_type> |
| 2456 | rfind(const _Tp& __svt, size_type __pos = npos) const |
| 2457 | noexcept(is_same<_Tp, __sv_type>::value) |
| 2458 | { |
| 2459 | __sv_type __sv = __svt; |
| 2460 | return this->rfind(__sv.data(), __pos, __sv.size()); |
| 2461 | } |
| 2462 | #endif // C++17 |
| 2463 | |
| 2464 | /** |
| 2465 | * @brief Find last position of a C substring. |
| 2466 | * @param __s C string to locate. |
| 2467 | * @param __pos Index of character to search back from. |
| 2468 | * @param __n Number of characters from s to search for. |
| 2469 | * @return Index of start of last occurrence. |
| 2470 | * |
| 2471 | * Starting from @a __pos, searches backward for the first @a |
| 2472 | * __n characters in @a __s within this string. If found, |
| 2473 | * returns the index where it begins. If not found, returns |
| 2474 | * npos. |
| 2475 | */ |
| 2476 | size_type |
| 2477 | rfind(const _CharT* __s, size_type __pos, size_type __n) const |
| 2478 | _GLIBCXX_NOEXCEPT; |
| 2479 | |
| 2480 | /** |
| 2481 | * @brief Find last position of a C string. |
| 2482 | * @param __s C string to locate. |
| 2483 | * @param __pos Index of character to start search at (default end). |
| 2484 | * @return Index of start of last occurrence. |
| 2485 | * |
| 2486 | * Starting from @a __pos, searches backward for the value of |
| 2487 | * @a __s within this string. If found, returns the index |
| 2488 | * where it begins. If not found, returns npos. |
| 2489 | */ |
| 2490 | size_type |
| 2491 | rfind(const _CharT* __s, size_type __pos = npos) const |
| 2492 | { |
| 2493 | __glibcxx_requires_string(__s); |
| 2494 | return this->rfind(__s, __pos, traits_type::length(__s)); |
| 2495 | } |
| 2496 | |
| 2497 | /** |
| 2498 | * @brief Find last position of a character. |
| 2499 | * @param __c Character to locate. |
| 2500 | * @param __pos Index of character to search back from (default end). |
| 2501 | * @return Index of last occurrence. |
| 2502 | * |
| 2503 | * Starting from @a __pos, searches backward for @a __c within |
| 2504 | * this string. If found, returns the index where it was |
| 2505 | * found. If not found, returns npos. |
| 2506 | */ |
| 2507 | size_type |
| 2508 | rfind(_CharT __c, size_type __pos = npos) const _GLIBCXX_NOEXCEPT; |
| 2509 | |
| 2510 | /** |
| 2511 | * @brief Find position of a character of string. |
| 2512 | * @param __str String containing characters to locate. |
| 2513 | * @param __pos Index of character to search from (default 0). |
| 2514 | * @return Index of first occurrence. |
| 2515 | * |
| 2516 | * Starting from @a __pos, searches forward for one of the |
| 2517 | * characters of @a __str within this string. If found, |
| 2518 | * returns the index where it was found. If not found, returns |
| 2519 | * npos. |
| 2520 | */ |
| 2521 | size_type |
| 2522 | find_first_of(const basic_string& __str, size_type __pos = 0) const |
| 2523 | _GLIBCXX_NOEXCEPT |
| 2524 | { return this->find_first_of(__str.data(), __pos, __str.size()); } |
| 2525 | |
| 2526 | #if __cplusplus >= 201703L |
| 2527 | /** |
| 2528 | * @brief Find position of a character of a string_view. |
| 2529 | * @param __svt An object convertible to string_view containing |
| 2530 | * characters to locate. |
| 2531 | * @param __pos Index of character to search from (default 0). |
| 2532 | * @return Index of first occurrence. |
| 2533 | */ |
| 2534 | template<typename _Tp> |
| 2535 | _If_sv<_Tp, size_type> |
| 2536 | find_first_of(const _Tp& __svt, size_type __pos = 0) const |
| 2537 | noexcept(is_same<_Tp, __sv_type>::value) |
| 2538 | { |
| 2539 | __sv_type __sv = __svt; |
| 2540 | return this->find_first_of(__sv.data(), __pos, __sv.size()); |
| 2541 | } |
| 2542 | #endif // C++17 |
| 2543 | |
| 2544 | /** |
| 2545 | * @brief Find position of a character of C substring. |
| 2546 | * @param __s String containing characters to locate. |
| 2547 | * @param __pos Index of character to search from. |
| 2548 | * @param __n Number of characters from s to search for. |
| 2549 | * @return Index of first occurrence. |
| 2550 | * |
| 2551 | * Starting from @a __pos, searches forward for one of the |
| 2552 | * first @a __n characters of @a __s within this string. If |
| 2553 | * found, returns the index where it was found. If not found, |
| 2554 | * returns npos. |
| 2555 | */ |
| 2556 | size_type |
| 2557 | find_first_of(const _CharT* __s, size_type __pos, size_type __n) const |
| 2558 | _GLIBCXX_NOEXCEPT; |
| 2559 | |
| 2560 | /** |
| 2561 | * @brief Find position of a character of C string. |
| 2562 | * @param __s String containing characters to locate. |
| 2563 | * @param __pos Index of character to search from (default 0). |
| 2564 | * @return Index of first occurrence. |
| 2565 | * |
| 2566 | * Starting from @a __pos, searches forward for one of the |
| 2567 | * characters of @a __s within this string. If found, returns |
| 2568 | * the index where it was found. If not found, returns npos. |
| 2569 | */ |
| 2570 | size_type |
| 2571 | find_first_of(const _CharT* __s, size_type __pos = 0) const |
| 2572 | _GLIBCXX_NOEXCEPT |
| 2573 | { |
| 2574 | __glibcxx_requires_string(__s); |
| 2575 | return this->find_first_of(__s, __pos, traits_type::length(__s)); |
| 2576 | } |
| 2577 | |
| 2578 | /** |
| 2579 | * @brief Find position of a character. |
| 2580 | * @param __c Character to locate. |
| 2581 | * @param __pos Index of character to search from (default 0). |
| 2582 | * @return Index of first occurrence. |
| 2583 | * |
| 2584 | * Starting from @a __pos, searches forward for the character |
| 2585 | * @a __c within this string. If found, returns the index |
| 2586 | * where it was found. If not found, returns npos. |
| 2587 | * |
| 2588 | * Note: equivalent to find(__c, __pos). |
| 2589 | */ |
| 2590 | size_type |
| 2591 | find_first_of(_CharT __c, size_type __pos = 0) const _GLIBCXX_NOEXCEPT |
| 2592 | { return this->find(__c, __pos); } |
| 2593 | |
| 2594 | /** |
| 2595 | * @brief Find last position of a character of string. |
| 2596 | * @param __str String containing characters to locate. |
| 2597 | * @param __pos Index of character to search back from (default end). |
| 2598 | * @return Index of last occurrence. |
| 2599 | * |
| 2600 | * Starting from @a __pos, searches backward for one of the |
| 2601 | * characters of @a __str within this string. If found, |
| 2602 | * returns the index where it was found. If not found, returns |
| 2603 | * npos. |
| 2604 | */ |
| 2605 | size_type |
| 2606 | find_last_of(const basic_string& __str, size_type __pos = npos) const |
| 2607 | _GLIBCXX_NOEXCEPT |
| 2608 | { return this->find_last_of(__str.data(), __pos, __str.size()); } |
| 2609 | |
| 2610 | #if __cplusplus >= 201703L |
| 2611 | /** |
| 2612 | * @brief Find last position of a character of string. |
| 2613 | * @param __svt An object convertible to string_view containing |
| 2614 | * characters to locate. |
| 2615 | * @param __pos Index of character to search back from (default end). |
| 2616 | * @return Index of last occurrence. |
| 2617 | */ |
| 2618 | template<typename _Tp> |
| 2619 | _If_sv<_Tp, size_type> |
| 2620 | find_last_of(const _Tp& __svt, size_type __pos = npos) const |
| 2621 | noexcept(is_same<_Tp, __sv_type>::value) |
| 2622 | { |
| 2623 | __sv_type __sv = __svt; |
| 2624 | return this->find_last_of(__sv.data(), __pos, __sv.size()); |
| 2625 | } |
| 2626 | #endif // C++17 |
| 2627 | |
| 2628 | /** |
| 2629 | * @brief Find last position of a character of C substring. |
| 2630 | * @param __s C string containing characters to locate. |
| 2631 | * @param __pos Index of character to search back from. |
| 2632 | * @param __n Number of characters from s to search for. |
| 2633 | * @return Index of last occurrence. |
| 2634 | * |
| 2635 | * Starting from @a __pos, searches backward for one of the |
| 2636 | * first @a __n characters of @a __s within this string. If |
| 2637 | * found, returns the index where it was found. If not found, |
| 2638 | * returns npos. |
| 2639 | */ |
| 2640 | size_type |
| 2641 | find_last_of(const _CharT* __s, size_type __pos, size_type __n) const |
| 2642 | _GLIBCXX_NOEXCEPT; |
| 2643 | |
| 2644 | /** |
| 2645 | * @brief Find last position of a character of C string. |
| 2646 | * @param __s C string containing characters to locate. |
| 2647 | * @param __pos Index of character to search back from (default end). |
| 2648 | * @return Index of last occurrence. |
| 2649 | * |
| 2650 | * Starting from @a __pos, searches backward for one of the |
| 2651 | * characters of @a __s within this string. If found, returns |
| 2652 | * the index where it was found. If not found, returns npos. |
| 2653 | */ |
| 2654 | size_type |
| 2655 | find_last_of(const _CharT* __s, size_type __pos = npos) const |
| 2656 | _GLIBCXX_NOEXCEPT |
| 2657 | { |
| 2658 | __glibcxx_requires_string(__s); |
| 2659 | return this->find_last_of(__s, __pos, traits_type::length(__s)); |
| 2660 | } |
| 2661 | |
| 2662 | /** |
| 2663 | * @brief Find last position of a character. |
| 2664 | * @param __c Character to locate. |
| 2665 | * @param __pos Index of character to search back from (default end). |
| 2666 | * @return Index of last occurrence. |
| 2667 | * |
| 2668 | * Starting from @a __pos, searches backward for @a __c within |
| 2669 | * this string. If found, returns the index where it was |
| 2670 | * found. If not found, returns npos. |
| 2671 | * |
| 2672 | * Note: equivalent to rfind(__c, __pos). |
| 2673 | */ |
| 2674 | size_type |
| 2675 | find_last_of(_CharT __c, size_type __pos = npos) const _GLIBCXX_NOEXCEPT |
| 2676 | { return this->rfind(__c, __pos); } |
| 2677 | |
| 2678 | /** |
| 2679 | * @brief Find position of a character not in string. |
| 2680 | * @param __str String containing characters to avoid. |
| 2681 | * @param __pos Index of character to search from (default 0). |
| 2682 | * @return Index of first occurrence. |
| 2683 | * |
| 2684 | * Starting from @a __pos, searches forward for a character not contained |
| 2685 | * in @a __str within this string. If found, returns the index where it |
| 2686 | * was found. If not found, returns npos. |
| 2687 | */ |
| 2688 | size_type |
| 2689 | find_first_not_of(const basic_string& __str, size_type __pos = 0) const |
| 2690 | _GLIBCXX_NOEXCEPT |
| 2691 | { return this->find_first_not_of(__str.data(), __pos, __str.size()); } |
| 2692 | |
| 2693 | #if __cplusplus >= 201703L |
| 2694 | /** |
| 2695 | * @brief Find position of a character not in a string_view. |
| 2696 | * @param __svt A object convertible to string_view containing |
| 2697 | * characters to avoid. |
| 2698 | * @param __pos Index of character to search from (default 0). |
| 2699 | * @return Index of first occurrence. |
| 2700 | */ |
| 2701 | template<typename _Tp> |
| 2702 | _If_sv<_Tp, size_type> |
| 2703 | find_first_not_of(const _Tp& __svt, size_type __pos = 0) const |
| 2704 | noexcept(is_same<_Tp, __sv_type>::value) |
| 2705 | { |
| 2706 | __sv_type __sv = __svt; |
| 2707 | return this->find_first_not_of(__sv.data(), __pos, __sv.size()); |
| 2708 | } |
| 2709 | #endif // C++17 |
| 2710 | |
| 2711 | /** |
| 2712 | * @brief Find position of a character not in C substring. |
| 2713 | * @param __s C string containing characters to avoid. |
| 2714 | * @param __pos Index of character to search from. |
| 2715 | * @param __n Number of characters from __s to consider. |
| 2716 | * @return Index of first occurrence. |
| 2717 | * |
| 2718 | * Starting from @a __pos, searches forward for a character not |
| 2719 | * contained in the first @a __n characters of @a __s within |
| 2720 | * this string. If found, returns the index where it was |
| 2721 | * found. If not found, returns npos. |
| 2722 | */ |
| 2723 | size_type |
| 2724 | find_first_not_of(const _CharT* __s, size_type __pos, |
| 2725 | size_type __n) const _GLIBCXX_NOEXCEPT; |
| 2726 | |
| 2727 | /** |
| 2728 | * @brief Find position of a character not in C string. |
| 2729 | * @param __s C string containing characters to avoid. |
| 2730 | * @param __pos Index of character to search from (default 0). |
| 2731 | * @return Index of first occurrence. |
| 2732 | * |
| 2733 | * Starting from @a __pos, searches forward for a character not |
| 2734 | * contained in @a __s within this string. If found, returns |
| 2735 | * the index where it was found. If not found, returns npos. |
| 2736 | */ |
| 2737 | size_type |
| 2738 | find_first_not_of(const _CharT* __s, size_type __pos = 0) const |
| 2739 | _GLIBCXX_NOEXCEPT |
| 2740 | { |
| 2741 | __glibcxx_requires_string(__s); |
| 2742 | return this->find_first_not_of(__s, __pos, traits_type::length(__s)); |
| 2743 | } |
| 2744 | |
| 2745 | /** |
| 2746 | * @brief Find position of a different character. |
| 2747 | * @param __c Character to avoid. |
| 2748 | * @param __pos Index of character to search from (default 0). |
| 2749 | * @return Index of first occurrence. |
| 2750 | * |
| 2751 | * Starting from @a __pos, searches forward for a character |
| 2752 | * other than @a __c within this string. If found, returns the |
| 2753 | * index where it was found. If not found, returns npos. |
| 2754 | */ |
| 2755 | size_type |
| 2756 | find_first_not_of(_CharT __c, size_type __pos = 0) const |
| 2757 | _GLIBCXX_NOEXCEPT; |
| 2758 | |
| 2759 | /** |
| 2760 | * @brief Find last position of a character not in string. |
| 2761 | * @param __str String containing characters to avoid. |
| 2762 | * @param __pos Index of character to search back from (default end). |
| 2763 | * @return Index of last occurrence. |
| 2764 | * |
| 2765 | * Starting from @a __pos, searches backward for a character |
| 2766 | * not contained in @a __str within this string. If found, |
| 2767 | * returns the index where it was found. If not found, returns |
| 2768 | * npos. |
| 2769 | */ |
| 2770 | size_type |
| 2771 | find_last_not_of(const basic_string& __str, size_type __pos = npos) const |
| 2772 | _GLIBCXX_NOEXCEPT |
| 2773 | { return this->find_last_not_of(__str.data(), __pos, __str.size()); } |
| 2774 | |
| 2775 | #if __cplusplus >= 201703L |
| 2776 | /** |
| 2777 | * @brief Find last position of a character not in a string_view. |
| 2778 | * @param __svt An object convertible to string_view containing |
| 2779 | * characters to avoid. |
| 2780 | * @param __pos Index of character to search back from (default end). |
| 2781 | * @return Index of last occurrence. |
| 2782 | */ |
| 2783 | template<typename _Tp> |
| 2784 | _If_sv<_Tp, size_type> |
| 2785 | find_last_not_of(const _Tp& __svt, size_type __pos = npos) const |
| 2786 | noexcept(is_same<_Tp, __sv_type>::value) |
| 2787 | { |
| 2788 | __sv_type __sv = __svt; |
| 2789 | return this->find_last_not_of(__sv.data(), __pos, __sv.size()); |
| 2790 | } |
| 2791 | #endif // C++17 |
| 2792 | |
| 2793 | /** |
| 2794 | * @brief Find last position of a character not in C substring. |
| 2795 | * @param __s C string containing characters to avoid. |
| 2796 | * @param __pos Index of character to search back from. |
| 2797 | * @param __n Number of characters from s to consider. |
| 2798 | * @return Index of last occurrence. |
| 2799 | * |
| 2800 | * Starting from @a __pos, searches backward for a character not |
| 2801 | * contained in the first @a __n characters of @a __s within this string. |
| 2802 | * If found, returns the index where it was found. If not found, |
| 2803 | * returns npos. |
| 2804 | */ |
| 2805 | size_type |
| 2806 | find_last_not_of(const _CharT* __s, size_type __pos, |
| 2807 | size_type __n) const _GLIBCXX_NOEXCEPT; |
| 2808 | /** |
| 2809 | * @brief Find last position of a character not in C string. |
| 2810 | * @param __s C string containing characters to avoid. |
| 2811 | * @param __pos Index of character to search back from (default end). |
| 2812 | * @return Index of last occurrence. |
| 2813 | * |
| 2814 | * Starting from @a __pos, searches backward for a character |
| 2815 | * not contained in @a __s within this string. If found, |
| 2816 | * returns the index where it was found. If not found, returns |
| 2817 | * npos. |
| 2818 | */ |
| 2819 | size_type |
| 2820 | find_last_not_of(const _CharT* __s, size_type __pos = npos) const |
| 2821 | _GLIBCXX_NOEXCEPT |
| 2822 | { |
| 2823 | __glibcxx_requires_string(__s); |
| 2824 | return this->find_last_not_of(__s, __pos, traits_type::length(__s)); |
| 2825 | } |
| 2826 | |
| 2827 | /** |
| 2828 | * @brief Find last position of a different character. |
| 2829 | * @param __c Character to avoid. |
| 2830 | * @param __pos Index of character to search back from (default end). |
| 2831 | * @return Index of last occurrence. |
| 2832 | * |
| 2833 | * Starting from @a __pos, searches backward for a character other than |
| 2834 | * @a __c within this string. If found, returns the index where it was |
| 2835 | * found. If not found, returns npos. |
| 2836 | */ |
| 2837 | size_type |
| 2838 | find_last_not_of(_CharT __c, size_type __pos = npos) const |
| 2839 | _GLIBCXX_NOEXCEPT; |
| 2840 | |
| 2841 | /** |
| 2842 | * @brief Get a substring. |
| 2843 | * @param __pos Index of first character (default 0). |
| 2844 | * @param __n Number of characters in substring (default remainder). |
| 2845 | * @return The new string. |
| 2846 | * @throw std::out_of_range If __pos > size(). |
| 2847 | * |
| 2848 | * Construct and return a new string using the @a __n |
| 2849 | * characters starting at @a __pos. If the string is too |
| 2850 | * short, use the remainder of the characters. If @a __pos is |
| 2851 | * beyond the end of the string, out_of_range is thrown. |
| 2852 | */ |
| 2853 | basic_string |
| 2854 | substr(size_type __pos = 0, size_type __n = npos) const |
| 2855 | { return basic_string(*this, |
| 2856 | _M_check(__pos, "basic_string::substr"), __n); } |
| 2857 | |
| 2858 | /** |
| 2859 | * @brief Compare to a string. |
| 2860 | * @param __str String to compare against. |
| 2861 | * @return Integer < 0, 0, or > 0. |
| 2862 | * |
| 2863 | * Returns an integer < 0 if this string is ordered before @a |
| 2864 | * __str, 0 if their values are equivalent, or > 0 if this |
| 2865 | * string is ordered after @a __str. Determines the effective |
| 2866 | * length rlen of the strings to compare as the smallest of |
| 2867 | * size() and str.size(). The function then compares the two |
| 2868 | * strings by calling traits::compare(data(), str.data(),rlen). |
| 2869 | * If the result of the comparison is nonzero returns it, |
| 2870 | * otherwise the shorter one is ordered first. |
| 2871 | */ |
| 2872 | int |
| 2873 | compare(const basic_string& __str) const |
| 2874 | { |
| 2875 | const size_type __size = this->size(); |
| 2876 | const size_type __osize = __str.size(); |
| 2877 | const size_type __len = std::min(__size, __osize); |
| 2878 | |
| 2879 | int __r = traits_type::compare(_M_data(), __str.data(), __len); |
| 2880 | if (!__r) |
| 2881 | __r = _S_compare(__size, __osize); |
| 2882 | return __r; |
| 2883 | } |
| 2884 | |
| 2885 | #if __cplusplus >= 201703L |
| 2886 | /** |
| 2887 | * @brief Compare to a string_view. |
| 2888 | * @param __svt An object convertible to string_view to compare against. |
| 2889 | * @return Integer < 0, 0, or > 0. |
| 2890 | */ |
| 2891 | template<typename _Tp> |
| 2892 | _If_sv<_Tp, int> |
| 2893 | compare(const _Tp& __svt) const |
| 2894 | noexcept(is_same<_Tp, __sv_type>::value) |
| 2895 | { |
| 2896 | __sv_type __sv = __svt; |
| 2897 | const size_type __size = this->size(); |
| 2898 | const size_type __osize = __sv.size(); |
| 2899 | const size_type __len = std::min(__size, __osize); |
| 2900 | |
| 2901 | int __r = traits_type::compare(_M_data(), __sv.data(), __len); |
| 2902 | if (!__r) |
| 2903 | __r = _S_compare(__size, __osize); |
| 2904 | return __r; |
| 2905 | } |
| 2906 | |
| 2907 | /** |
| 2908 | * @brief Compare to a string_view. |
| 2909 | * @param __pos A position in the string to start comparing from. |
| 2910 | * @param __n The number of characters to compare. |
| 2911 | * @param __svt An object convertible to string_view to compare |
| 2912 | * against. |
| 2913 | * @return Integer < 0, 0, or > 0. |
| 2914 | */ |
| 2915 | template<typename _Tp> |
| 2916 | _If_sv<_Tp, int> |
| 2917 | compare(size_type __pos, size_type __n, const _Tp& __svt) const |
| 2918 | noexcept(is_same<_Tp, __sv_type>::value) |
| 2919 | { |
| 2920 | __sv_type __sv = __svt; |
| 2921 | return __sv_type(*this).substr(__pos, __n).compare(__sv); |
| 2922 | } |
| 2923 | |
| 2924 | /** |
| 2925 | * @brief Compare to a string_view. |
| 2926 | * @param __pos1 A position in the string to start comparing from. |
| 2927 | * @param __n1 The number of characters to compare. |
| 2928 | * @param __svt An object convertible to string_view to compare |
| 2929 | * against. |
| 2930 | * @param __pos2 A position in the string_view to start comparing from. |
| 2931 | * @param __n2 The number of characters to compare. |
| 2932 | * @return Integer < 0, 0, or > 0. |
| 2933 | */ |
| 2934 | template<typename _Tp> |
| 2935 | _If_sv<_Tp, int> |
| 2936 | compare(size_type __pos1, size_type __n1, const _Tp& __svt, |
| 2937 | size_type __pos2, size_type __n2 = npos) const |
| 2938 | noexcept(is_same<_Tp, __sv_type>::value) |
| 2939 | { |
| 2940 | __sv_type __sv = __svt; |
| 2941 | return __sv_type(*this) |
| 2942 | .substr(__pos1, __n1).compare(__sv.substr(__pos2, __n2)); |
| 2943 | } |
| 2944 | #endif // C++17 |
| 2945 | |
| 2946 | /** |
| 2947 | * @brief Compare substring to a string. |
| 2948 | * @param __pos Index of first character of substring. |
| 2949 | * @param __n Number of characters in substring. |
| 2950 | * @param __str String to compare against. |
| 2951 | * @return Integer < 0, 0, or > 0. |
| 2952 | * |
| 2953 | * Form the substring of this string from the @a __n characters |
| 2954 | * starting at @a __pos. Returns an integer < 0 if the |
| 2955 | * substring is ordered before @a __str, 0 if their values are |
| 2956 | * equivalent, or > 0 if the substring is ordered after @a |
| 2957 | * __str. Determines the effective length rlen of the strings |
| 2958 | * to compare as the smallest of the length of the substring |
| 2959 | * and @a __str.size(). The function then compares the two |
| 2960 | * strings by calling |
| 2961 | * traits::compare(substring.data(),str.data(),rlen). If the |
| 2962 | * result of the comparison is nonzero returns it, otherwise |
| 2963 | * the shorter one is ordered first. |
| 2964 | */ |
| 2965 | int |
| 2966 | compare(size_type __pos, size_type __n, const basic_string& __str) const; |
| 2967 | |
| 2968 | /** |
| 2969 | * @brief Compare substring to a substring. |
| 2970 | * @param __pos1 Index of first character of substring. |
| 2971 | * @param __n1 Number of characters in substring. |
| 2972 | * @param __str String to compare against. |
| 2973 | * @param __pos2 Index of first character of substring of str. |
| 2974 | * @param __n2 Number of characters in substring of str. |
| 2975 | * @return Integer < 0, 0, or > 0. |
| 2976 | * |
| 2977 | * Form the substring of this string from the @a __n1 |
| 2978 | * characters starting at @a __pos1. Form the substring of @a |
| 2979 | * __str from the @a __n2 characters starting at @a __pos2. |
| 2980 | * Returns an integer < 0 if this substring is ordered before |
| 2981 | * the substring of @a __str, 0 if their values are equivalent, |
| 2982 | * or > 0 if this substring is ordered after the substring of |
| 2983 | * @a __str. Determines the effective length rlen of the |
| 2984 | * strings to compare as the smallest of the lengths of the |
| 2985 | * substrings. The function then compares the two strings by |
| 2986 | * calling |
| 2987 | * traits::compare(substring.data(),str.substr(pos2,n2).data(),rlen). |
| 2988 | * If the result of the comparison is nonzero returns it, |
| 2989 | * otherwise the shorter one is ordered first. |
| 2990 | */ |
| 2991 | int |
| 2992 | compare(size_type __pos1, size_type __n1, const basic_string& __str, |
| 2993 | size_type __pos2, size_type __n2 = npos) const; |
| 2994 | |
| 2995 | /** |
| 2996 | * @brief Compare to a C string. |
| 2997 | * @param __s C string to compare against. |
| 2998 | * @return Integer < 0, 0, or > 0. |
| 2999 | * |
| 3000 | * Returns an integer < 0 if this string is ordered before @a __s, 0 if |
| 3001 | * their values are equivalent, or > 0 if this string is ordered after |
| 3002 | * @a __s. Determines the effective length rlen of the strings to |
| 3003 | * compare as the smallest of size() and the length of a string |
| 3004 | * constructed from @a __s. The function then compares the two strings |
| 3005 | * by calling traits::compare(data(),s,rlen). If the result of the |
| 3006 | * comparison is nonzero returns it, otherwise the shorter one is |
| 3007 | * ordered first. |
| 3008 | */ |
| 3009 | int |
| 3010 | compare(const _CharT* __s) const _GLIBCXX_NOEXCEPT; |
| 3011 | |
| 3012 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
| 3013 | // 5 String::compare specification questionable |
| 3014 | /** |
| 3015 | * @brief Compare substring to a C string. |
| 3016 | * @param __pos Index of first character of substring. |
| 3017 | * @param __n1 Number of characters in substring. |
| 3018 | * @param __s C string to compare against. |
| 3019 | * @return Integer < 0, 0, or > 0. |
| 3020 | * |
| 3021 | * Form the substring of this string from the @a __n1 |
| 3022 | * characters starting at @a pos. Returns an integer < 0 if |
| 3023 | * the substring is ordered before @a __s, 0 if their values |
| 3024 | * are equivalent, or > 0 if the substring is ordered after @a |
| 3025 | * __s. Determines the effective length rlen of the strings to |
| 3026 | * compare as the smallest of the length of the substring and |
| 3027 | * the length of a string constructed from @a __s. The |
| 3028 | * function then compares the two string by calling |
| 3029 | * traits::compare(substring.data(),__s,rlen). If the result of |
| 3030 | * the comparison is nonzero returns it, otherwise the shorter |
| 3031 | * one is ordered first. |
| 3032 | */ |
| 3033 | int |
| 3034 | compare(size_type __pos, size_type __n1, const _CharT* __s) const; |
| 3035 | |
| 3036 | /** |
| 3037 | * @brief Compare substring against a character %array. |
| 3038 | * @param __pos Index of first character of substring. |
| 3039 | * @param __n1 Number of characters in substring. |
| 3040 | * @param __s character %array to compare against. |
| 3041 | * @param __n2 Number of characters of s. |
| 3042 | * @return Integer < 0, 0, or > 0. |
| 3043 | * |
| 3044 | * Form the substring of this string from the @a __n1 |
| 3045 | * characters starting at @a __pos. Form a string from the |
| 3046 | * first @a __n2 characters of @a __s. Returns an integer < 0 |
| 3047 | * if this substring is ordered before the string from @a __s, |
| 3048 | * 0 if their values are equivalent, or > 0 if this substring |
| 3049 | * is ordered after the string from @a __s. Determines the |
| 3050 | * effective length rlen of the strings to compare as the |
| 3051 | * smallest of the length of the substring and @a __n2. The |
| 3052 | * function then compares the two strings by calling |
| 3053 | * traits::compare(substring.data(),s,rlen). If the result of |
| 3054 | * the comparison is nonzero returns it, otherwise the shorter |
| 3055 | * one is ordered first. |
| 3056 | * |
| 3057 | * NB: s must have at least n2 characters, '\\0' has |
| 3058 | * no special meaning. |
| 3059 | */ |
| 3060 | int |
| 3061 | compare(size_type __pos, size_type __n1, const _CharT* __s, |
| 3062 | size_type __n2) const; |
| 3063 | |
| 3064 | #if __cplusplus > 201703L |
| 3065 | bool |
| 3066 | starts_with(basic_string_view<_CharT, _Traits> __x) const noexcept |
| 3067 | { return __sv_type(this->data(), this->size()).starts_with(__x); } |
| 3068 | |
| 3069 | bool |
| 3070 | starts_with(_CharT __x) const noexcept |
| 3071 | { return __sv_type(this->data(), this->size()).starts_with(__x); } |
| 3072 | |
| 3073 | bool |
| 3074 | starts_with(const _CharT* __x) const noexcept |
| 3075 | { return __sv_type(this->data(), this->size()).starts_with(__x); } |
| 3076 | |
| 3077 | bool |
| 3078 | ends_with(basic_string_view<_CharT, _Traits> __x) const noexcept |
| 3079 | { return __sv_type(this->data(), this->size()).ends_with(__x); } |
| 3080 | |
| 3081 | bool |
| 3082 | ends_with(_CharT __x) const noexcept |
| 3083 | { return __sv_type(this->data(), this->size()).ends_with(__x); } |
| 3084 | |
| 3085 | bool |
| 3086 | ends_with(const _CharT* __x) const noexcept |
| 3087 | { return __sv_type(this->data(), this->size()).ends_with(__x); } |
| 3088 | #endif // C++20 |
| 3089 | |
| 3090 | #if __cplusplus > 202002L |
| 3091 | bool |
| 3092 | contains(basic_string_view<_CharT, _Traits> __x) const noexcept |
| 3093 | { return __sv_type(this->data(), this->size()).contains(__x); } |
| 3094 | |
| 3095 | bool |
| 3096 | contains(_CharT __x) const noexcept |
| 3097 | { return __sv_type(this->data(), this->size()).contains(__x); } |
| 3098 | |
| 3099 | bool |
| 3100 | contains(const _CharT* __x) const noexcept |
| 3101 | { return __sv_type(this->data(), this->size()).contains(__x); } |
| 3102 | #endif // C++23 |
| 3103 | |
| 3104 | // Allow basic_stringbuf::__xfer_bufptrs to call _M_length: |
| 3105 | template<typename, typename, typename> friend class basic_stringbuf; |
| 3106 | }; |
| 3107 | _GLIBCXX_END_NAMESPACE_CXX11 |
| 3108 | #else // !_GLIBCXX_USE_CXX11_ABI |
| 3109 | // Reference-counted COW string implentation |
| 3110 | |
| 3111 | /** |
| 3112 | * @class basic_string basic_string.h <string> |
| 3113 | * @brief Managing sequences of characters and character-like objects. |
| 3114 | * |
| 3115 | * @ingroup strings |
| 3116 | * @ingroup sequences |
| 3117 | * |
| 3118 | * @tparam _CharT Type of character |
| 3119 | * @tparam _Traits Traits for character type, defaults to |
| 3120 | * char_traits<_CharT>. |
| 3121 | * @tparam _Alloc Allocator type, defaults to allocator<_CharT>. |
| 3122 | * |
| 3123 | * Meets the requirements of a <a href="tables.html#65">container</a>, a |
| 3124 | * <a href="tables.html#66">reversible container</a>, and a |
| 3125 | * <a href="tables.html#67">sequence</a>. Of the |
| 3126 | * <a href="tables.html#68">optional sequence requirements</a>, only |
| 3127 | * @c push_back, @c at, and @c %array access are supported. |
| 3128 | * |
| 3129 | * @doctodo |
| 3130 | * |
| 3131 | * |
| 3132 | * Documentation? What's that? |
| 3133 | * Nathan Myers <ncm@cantrip.org>. |
| 3134 | * |
| 3135 | * A string looks like this: |
| 3136 | * |
| 3137 | * @code |
| 3138 | * [_Rep] |
| 3139 | * _M_length |
| 3140 | * [basic_string<char_type>] _M_capacity |
| 3141 | * _M_dataplus _M_refcount |
| 3142 | * _M_p ----------------> unnamed array of char_type |
| 3143 | * @endcode |
| 3144 | * |
| 3145 | * Where the _M_p points to the first character in the string, and |
| 3146 | * you cast it to a pointer-to-_Rep and subtract 1 to get a |
| 3147 | * pointer to the header. |
| 3148 | * |
| 3149 | * This approach has the enormous advantage that a string object |
| 3150 | * requires only one allocation. All the ugliness is confined |
| 3151 | * within a single %pair of inline functions, which each compile to |
| 3152 | * a single @a add instruction: _Rep::_M_data(), and |
| 3153 | * string::_M_rep(); and the allocation function which gets a |
| 3154 | * block of raw bytes and with room enough and constructs a _Rep |
| 3155 | * object at the front. |
| 3156 | * |
| 3157 | * The reason you want _M_data pointing to the character %array and |
| 3158 | * not the _Rep is so that the debugger can see the string |
| 3159 | * contents. (Probably we should add a non-inline member to get |
| 3160 | * the _Rep for the debugger to use, so users can check the actual |
| 3161 | * string length.) |
| 3162 | * |
| 3163 | * Note that the _Rep object is a POD so that you can have a |
| 3164 | * static <em>empty string</em> _Rep object already @a constructed before |
| 3165 | * static constructors have run. The reference-count encoding is |
| 3166 | * chosen so that a 0 indicates one reference, so you never try to |
| 3167 | * destroy the empty-string _Rep object. |
| 3168 | * |
| 3169 | * All but the last paragraph is considered pretty conventional |
| 3170 | * for a C++ string implementation. |
| 3171 | */ |
| 3172 | // 21.3 Template class basic_string |
| 3173 | template<typename _CharT, typename _Traits, typename _Alloc> |
| 3174 | class basic_string |
| 3175 | { |
| 3176 | typedef typename __gnu_cxx::__alloc_traits<_Alloc>::template |
| 3177 | rebind<_CharT>::other _CharT_alloc_type; |
| 3178 | typedef __gnu_cxx::__alloc_traits<_CharT_alloc_type> _CharT_alloc_traits; |
| 3179 | |
| 3180 | // Types: |
| 3181 | public: |
| 3182 | typedef _Traits traits_type; |
| 3183 | typedef typename _Traits::char_type value_type; |
| 3184 | typedef _Alloc allocator_type; |
| 3185 | typedef typename _CharT_alloc_traits::size_type size_type; |
| 3186 | typedef typename _CharT_alloc_traits::difference_type difference_type; |
| 3187 | #if __cplusplus < 201103L |
| 3188 | typedef typename _CharT_alloc_type::reference reference; |
| 3189 | typedef typename _CharT_alloc_type::const_reference const_reference; |
| 3190 | #else |
| 3191 | typedef value_type& reference; |
| 3192 | typedef const value_type& const_reference; |
| 3193 | #endif |
| 3194 | typedef typename _CharT_alloc_traits::pointer pointer; |
| 3195 | typedef typename _CharT_alloc_traits::const_pointer const_pointer; |
| 3196 | typedef __gnu_cxx::__normal_iterator<pointer, basic_string> iterator; |
| 3197 | typedef __gnu_cxx::__normal_iterator<const_pointer, basic_string> |
| 3198 | const_iterator; |
| 3199 | typedef std::reverse_iterator<const_iterator> const_reverse_iterator; |
| 3200 | typedef std::reverse_iterator<iterator> reverse_iterator; |
| 3201 | |
| 3202 | protected: |
| 3203 | // type used for positions in insert, erase etc. |
| 3204 | typedef iterator __const_iterator; |
| 3205 | |
| 3206 | private: |
| 3207 | // _Rep: string representation |
| 3208 | // Invariants: |
| 3209 | // 1. String really contains _M_length + 1 characters: due to 21.3.4 |
| 3210 | // must be kept null-terminated. |
| 3211 | // 2. _M_capacity >= _M_length |
| 3212 | // Allocated memory is always (_M_capacity + 1) * sizeof(_CharT). |
| 3213 | // 3. _M_refcount has three states: |
| 3214 | // -1: leaked, one reference, no ref-copies allowed, non-const. |
| 3215 | // 0: one reference, non-const. |
| 3216 | // n>0: n + 1 references, operations require a lock, const. |
| 3217 | // 4. All fields==0 is an empty string, given the extra storage |
| 3218 | // beyond-the-end for a null terminator; thus, the shared |
| 3219 | // empty string representation needs no constructor. |
| 3220 | |
| 3221 | struct _Rep_base |
| 3222 | { |
| 3223 | size_type _M_length; |
| 3224 | size_type _M_capacity; |
| 3225 | _Atomic_word _M_refcount; |
| 3226 | }; |
| 3227 | |
| 3228 | struct _Rep : _Rep_base |
| 3229 | { |
| 3230 | // Types: |
| 3231 | typedef typename __gnu_cxx::__alloc_traits<_Alloc>::template |
| 3232 | rebind<char>::other _Raw_bytes_alloc; |
| 3233 | |
| 3234 | // (Public) Data members: |
| 3235 | |
| 3236 | // The maximum number of individual char_type elements of an |
| 3237 | // individual string is determined by _S_max_size. This is the |
| 3238 | // value that will be returned by max_size(). (Whereas npos |
| 3239 | // is the maximum number of bytes the allocator can allocate.) |
| 3240 | // If one was to divvy up the theoretical largest size string, |
| 3241 | // with a terminating character and m _CharT elements, it'd |
| 3242 | // look like this: |
| 3243 | // npos = sizeof(_Rep) + (m * sizeof(_CharT)) + sizeof(_CharT) |
| 3244 | // Solving for m: |
| 3245 | // m = ((npos - sizeof(_Rep))/sizeof(CharT)) - 1 |
| 3246 | // In addition, this implementation quarters this amount. |
| 3247 | static const size_type _S_max_size; |
| 3248 | static const _CharT _S_terminal; |
| 3249 | |
| 3250 | // The following storage is init'd to 0 by the linker, resulting |
| 3251 | // (carefully) in an empty string with one reference. |
| 3252 | static size_type _S_empty_rep_storage[]; |
| 3253 | |
| 3254 | static _Rep& |
| 3255 | _S_empty_rep() _GLIBCXX_NOEXCEPT |
| 3256 | { |
| 3257 | // NB: Mild hack to avoid strict-aliasing warnings. Note that |
| 3258 | // _S_empty_rep_storage is never modified and the punning should |
| 3259 | // be reasonably safe in this case. |
| 3260 | void* __p = reinterpret_cast<void*>(&_S_empty_rep_storage); |
| 3261 | return *reinterpret_cast<_Rep*>(__p); |
| 3262 | } |
| 3263 | |
| 3264 | bool |
| 3265 | _M_is_leaked() const _GLIBCXX_NOEXCEPT |
| 3266 | { |
| 3267 | #if defined(__GTHREADS) |
| 3268 | // _M_refcount is mutated concurrently by _M_refcopy/_M_dispose, |
| 3269 | // so we need to use an atomic load. However, _M_is_leaked |
| 3270 | // predicate does not change concurrently (i.e. the string is either |
| 3271 | // leaked or not), so a relaxed load is enough. |
| 3272 | return __atomic_load_n(&this->_M_refcount, __ATOMIC_RELAXED) < 0; |
| 3273 | #else |
| 3274 | return this->_M_refcount < 0; |
| 3275 | #endif |
| 3276 | } |
| 3277 | |
| 3278 | bool |
| 3279 | _M_is_shared() const _GLIBCXX_NOEXCEPT |
| 3280 | { |
| 3281 | #if defined(__GTHREADS) |
| 3282 | // _M_refcount is mutated concurrently by _M_refcopy/_M_dispose, |
| 3283 | // so we need to use an atomic load. Another thread can drop last |
| 3284 | // but one reference concurrently with this check, so we need this |
| 3285 | // load to be acquire to synchronize with release fetch_and_add in |
| 3286 | // _M_dispose. |
| 3287 | return __atomic_load_n(&this->_M_refcount, __ATOMIC_ACQUIRE) > 0; |
| 3288 | #else |
| 3289 | return this->_M_refcount > 0; |
| 3290 | #endif |
| 3291 | } |
| 3292 | |
| 3293 | void |
| 3294 | _M_set_leaked() _GLIBCXX_NOEXCEPT |
| 3295 | { this->_M_refcount = -1; } |
| 3296 | |
| 3297 | void |
| 3298 | _M_set_sharable() _GLIBCXX_NOEXCEPT |
| 3299 | { this->_M_refcount = 0; } |
| 3300 | |
| 3301 | void |
| 3302 | _M_set_length_and_sharable(size_type __n) _GLIBCXX_NOEXCEPT |
| 3303 | { |
| 3304 | #if _GLIBCXX_FULLY_DYNAMIC_STRING == 0 |
| 3305 | if (__builtin_expect(this != &_S_empty_rep(), false)) |
| 3306 | #endif |
| 3307 | { |
| 3308 | this->_M_set_sharable(); // One reference. |
| 3309 | this->_M_length = __n; |
| 3310 | traits_type::assign(this->_M_refdata()[__n], _S_terminal); |
| 3311 | // grrr. (per 21.3.4) |
| 3312 | // You cannot leave those LWG people alone for a second. |
| 3313 | } |
| 3314 | } |
| 3315 | |
| 3316 | _CharT* |
| 3317 | _M_refdata() throw() |
| 3318 | { return reinterpret_cast<_CharT*>(this + 1); } |
| 3319 | |
| 3320 | _CharT* |
| 3321 | _M_grab(const _Alloc& __alloc1, const _Alloc& __alloc2) |
| 3322 | { |
| 3323 | return (!_M_is_leaked() && __alloc1 == __alloc2) |
| 3324 | ? _M_refcopy() : _M_clone(__alloc1); |
| 3325 | } |
| 3326 | |
| 3327 | // Create & Destroy |
| 3328 | static _Rep* |
| 3329 | _S_create(size_type, size_type, const _Alloc&); |
| 3330 | |
| 3331 | void |
| 3332 | _M_dispose(const _Alloc& __a) _GLIBCXX_NOEXCEPT |
| 3333 | { |
| 3334 | #if _GLIBCXX_FULLY_DYNAMIC_STRING == 0 |
| 3335 | if (__builtin_expect(this != &_S_empty_rep(), false)) |
| 3336 | #endif |
| 3337 | { |
| 3338 | // Be race-detector-friendly. For more info see bits/c++config. |
| 3339 | _GLIBCXX_SYNCHRONIZATION_HAPPENS_BEFORE(&this->_M_refcount); |
| 3340 | // Decrement of _M_refcount is acq_rel, because: |
| 3341 | // - all but last decrements need to release to synchronize with |
| 3342 | // the last decrement that will delete the object. |
| 3343 | // - the last decrement needs to acquire to synchronize with |
| 3344 | // all the previous decrements. |
| 3345 | // - last but one decrement needs to release to synchronize with |
| 3346 | // the acquire load in _M_is_shared that will conclude that |
| 3347 | // the object is not shared anymore. |
| 3348 | if (__gnu_cxx::__exchange_and_add_dispatch(&this->_M_refcount, |
| 3349 | -1) <= 0) |
| 3350 | { |
| 3351 | _GLIBCXX_SYNCHRONIZATION_HAPPENS_AFTER(&this->_M_refcount); |
| 3352 | _M_destroy(__a); |
| 3353 | } |
| 3354 | } |
| 3355 | } // XXX MT |
| 3356 | |
| 3357 | void |
| 3358 | _M_destroy(const _Alloc&) throw(); |
| 3359 | |
| 3360 | _CharT* |
| 3361 | _M_refcopy() throw() |
| 3362 | { |
| 3363 | #if _GLIBCXX_FULLY_DYNAMIC_STRING == 0 |
| 3364 | if (__builtin_expect(this != &_S_empty_rep(), false)) |
| 3365 | #endif |
| 3366 | __gnu_cxx::__atomic_add_dispatch(&this->_M_refcount, 1); |
| 3367 | return _M_refdata(); |
| 3368 | } // XXX MT |
| 3369 | |
| 3370 | _CharT* |
| 3371 | _M_clone(const _Alloc&, size_type __res = 0); |
| 3372 | }; |
| 3373 | |
| 3374 | // Use empty-base optimization: http://www.cantrip.org/emptyopt.html |
| 3375 | struct _Alloc_hider : _Alloc |
| 3376 | { |
| 3377 | _Alloc_hider(_CharT* __dat, const _Alloc& __a) _GLIBCXX_NOEXCEPT |
| 3378 | : _Alloc(__a), _M_p(__dat) { } |
| 3379 | |
| 3380 | _CharT* _M_p; // The actual data. |
| 3381 | }; |
| 3382 | |
| 3383 | public: |
| 3384 | // Data Members (public): |
| 3385 | // NB: This is an unsigned type, and thus represents the maximum |
| 3386 | // size that the allocator can hold. |
| 3387 | /// Value returned by various member functions when they fail. |
| 3388 | static const size_type npos = static_cast<size_type>(-1); |
| 3389 | |
| 3390 | private: |
| 3391 | // Data Members (private): |
| 3392 | mutable _Alloc_hider _M_dataplus; |
| 3393 | |
| 3394 | _CharT* |
| 3395 | _M_data() const _GLIBCXX_NOEXCEPT |
| 3396 | { return _M_dataplus._M_p; } |
| 3397 | |
| 3398 | _CharT* |
| 3399 | _M_data(_CharT* __p) _GLIBCXX_NOEXCEPT |
| 3400 | { return (_M_dataplus._M_p = __p); } |
| 3401 | |
| 3402 | _Rep* |
| 3403 | _M_rep() const _GLIBCXX_NOEXCEPT |
| 3404 | { return &((reinterpret_cast<_Rep*> (_M_data()))[-1]); } |
| 3405 | |
| 3406 | // For the internal use we have functions similar to `begin'/`end' |
| 3407 | // but they do not call _M_leak. |
| 3408 | iterator |
| 3409 | _M_ibegin() const _GLIBCXX_NOEXCEPT |
| 3410 | { return iterator(_M_data()); } |
| 3411 | |
| 3412 | iterator |
| 3413 | _M_iend() const _GLIBCXX_NOEXCEPT |
| 3414 | { return iterator(_M_data() + this->size()); } |
| 3415 | |
| 3416 | void |
| 3417 | _M_leak() // for use in begin() & non-const op[] |
| 3418 | { |
| 3419 | if (!_M_rep()->_M_is_leaked()) |
| 3420 | _M_leak_hard(); |
| 3421 | } |
| 3422 | |
| 3423 | size_type |
| 3424 | _M_check(size_type __pos, const char* __s) const |
| 3425 | { |
| 3426 | if (__pos > this->size()) |
| 3427 | __throw_out_of_range_fmt(__N("%s: __pos (which is %zu) > " |
| 3428 | "this->size() (which is %zu)"), |
| 3429 | __s, __pos, this->size()); |
| 3430 | return __pos; |
| 3431 | } |
| 3432 | |
| 3433 | void |
| 3434 | _M_check_length(size_type __n1, size_type __n2, const char* __s) const |
| 3435 | { |
| 3436 | if (this->max_size() - (this->size() - __n1) < __n2) |
| 3437 | __throw_length_error(__N(__s)); |
| 3438 | } |
| 3439 | |
| 3440 | // NB: _M_limit doesn't check for a bad __pos value. |
| 3441 | size_type |
| 3442 | _M_limit(size_type __pos, size_type __off) const _GLIBCXX_NOEXCEPT |
| 3443 | { |
| 3444 | const bool __testoff = __off < this->size() - __pos; |
| 3445 | return __testoff ? __off : this->size() - __pos; |
| 3446 | } |
| 3447 | |
| 3448 | // True if _Rep and source do not overlap. |
| 3449 | bool |
| 3450 | _M_disjunct(const _CharT* __s) const _GLIBCXX_NOEXCEPT |
| 3451 | { |
| 3452 | return (less<const _CharT*>()(__s, _M_data()) |
| 3453 | || less<const _CharT*>()(_M_data() + this->size(), __s)); |
| 3454 | } |
| 3455 | |
| 3456 | // When __n = 1 way faster than the general multichar |
| 3457 | // traits_type::copy/move/assign. |
| 3458 | static void |
| 3459 | _M_copy(_CharT* __d, const _CharT* __s, size_type __n) _GLIBCXX_NOEXCEPT |
| 3460 | { |
| 3461 | if (__n == 1) |
| 3462 | traits_type::assign(*__d, *__s); |
| 3463 | else |
| 3464 | traits_type::copy(__d, __s, __n); |
| 3465 | } |
| 3466 | |
| 3467 | static void |
| 3468 | _M_move(_CharT* __d, const _CharT* __s, size_type __n) _GLIBCXX_NOEXCEPT |
| 3469 | { |
| 3470 | if (__n == 1) |
| 3471 | traits_type::assign(*__d, *__s); |
| 3472 | else |
| 3473 | traits_type::move(__d, __s, __n); |
| 3474 | } |
| 3475 | |
| 3476 | static void |
| 3477 | _M_assign(_CharT* __d, size_type __n, _CharT __c) _GLIBCXX_NOEXCEPT |
| 3478 | { |
| 3479 | if (__n == 1) |
| 3480 | traits_type::assign(*__d, __c); |
| 3481 | else |
| 3482 | traits_type::assign(__d, __n, __c); |
| 3483 | } |
| 3484 | |
| 3485 | // _S_copy_chars is a separate template to permit specialization |
| 3486 | // to optimize for the common case of pointers as iterators. |
| 3487 | template<class _Iterator> |
| 3488 | static void |
| 3489 | _S_copy_chars(_CharT* __p, _Iterator __k1, _Iterator __k2) |
| 3490 | { |
| 3491 | for (; __k1 != __k2; ++__k1, (void)++__p) |
| 3492 | traits_type::assign(*__p, *__k1); // These types are off. |
| 3493 | } |
| 3494 | |
| 3495 | static void |
| 3496 | _S_copy_chars(_CharT* __p, iterator __k1, iterator __k2) _GLIBCXX_NOEXCEPT |
| 3497 | { _S_copy_chars(__p, __k1.base(), __k2.base()); } |
| 3498 | |
| 3499 | static void |
| 3500 | _S_copy_chars(_CharT* __p, const_iterator __k1, const_iterator __k2) |
| 3501 | _GLIBCXX_NOEXCEPT |
| 3502 | { _S_copy_chars(__p, __k1.base(), __k2.base()); } |
| 3503 | |
| 3504 | static void |
| 3505 | _S_copy_chars(_CharT* __p, _CharT* __k1, _CharT* __k2) _GLIBCXX_NOEXCEPT |
| 3506 | { _M_copy(__p, __k1, __k2 - __k1); } |
| 3507 | |
| 3508 | static void |
| 3509 | _S_copy_chars(_CharT* __p, const _CharT* __k1, const _CharT* __k2) |
| 3510 | _GLIBCXX_NOEXCEPT |
| 3511 | { _M_copy(__p, __k1, __k2 - __k1); } |
| 3512 | |
| 3513 | static int |
| 3514 | _S_compare(size_type __n1, size_type __n2) _GLIBCXX_NOEXCEPT |
| 3515 | { |
| 3516 | const difference_type __d = difference_type(__n1 - __n2); |
| 3517 | |
| 3518 | if (__d > __gnu_cxx::__numeric_traits<int>::__max) |
| 3519 | return __gnu_cxx::__numeric_traits<int>::__max; |
| 3520 | else if (__d < __gnu_cxx::__numeric_traits<int>::__min) |
| 3521 | return __gnu_cxx::__numeric_traits<int>::__min; |
| 3522 | else |
| 3523 | return int(__d); |
| 3524 | } |
| 3525 | |
| 3526 | void |
| 3527 | _M_mutate(size_type __pos, size_type __len1, size_type __len2); |
| 3528 | |
| 3529 | void |
| 3530 | _M_leak_hard(); |
| 3531 | |
| 3532 | static _Rep& |
| 3533 | _S_empty_rep() _GLIBCXX_NOEXCEPT |
| 3534 | { return _Rep::_S_empty_rep(); } |
| 3535 | |
| 3536 | #if __cplusplus >= 201703L |
| 3537 | // A helper type for avoiding boiler-plate. |
| 3538 | typedef basic_string_view<_CharT, _Traits> __sv_type; |
| 3539 | |
| 3540 | template<typename _Tp, typename _Res> |
| 3541 | using _If_sv = enable_if_t< |
| 3542 | __and_<is_convertible<const _Tp&, __sv_type>, |
| 3543 | __not_<is_convertible<const _Tp*, const basic_string*>>, |
| 3544 | __not_<is_convertible<const _Tp&, const _CharT*>>>::value, |
| 3545 | _Res>; |
| 3546 | |
| 3547 | // Allows an implicit conversion to __sv_type. |
| 3548 | static __sv_type |
| 3549 | _S_to_string_view(__sv_type __svt) noexcept |
| 3550 | { return __svt; } |
| 3551 | |
| 3552 | // Wraps a string_view by explicit conversion and thus |
| 3553 | // allows to add an internal constructor that does not |
| 3554 | // participate in overload resolution when a string_view |
| 3555 | // is provided. |
| 3556 | struct __sv_wrapper |
| 3557 | { |
| 3558 | explicit __sv_wrapper(__sv_type __sv) noexcept : _M_sv(__sv) { } |
| 3559 | __sv_type _M_sv; |
| 3560 | }; |
| 3561 | |
| 3562 | /** |
| 3563 | * @brief Only internally used: Construct string from a string view |
| 3564 | * wrapper. |
| 3565 | * @param __svw string view wrapper. |
| 3566 | * @param __a Allocator to use. |
| 3567 | */ |
| 3568 | explicit |
| 3569 | basic_string(__sv_wrapper __svw, const _Alloc& __a) |
| 3570 | : basic_string(__svw._M_sv.data(), __svw._M_sv.size(), __a) { } |
| 3571 | #endif |
| 3572 | |
| 3573 | public: |
| 3574 | // Construct/copy/destroy: |
| 3575 | // NB: We overload ctors in some cases instead of using default |
| 3576 | // arguments, per 17.4.4.4 para. 2 item 2. |
| 3577 | |
| 3578 | /** |
| 3579 | * @brief Default constructor creates an empty string. |
| 3580 | */ |
| 3581 | basic_string() |
| 3582 | #if _GLIBCXX_FULLY_DYNAMIC_STRING == 0 |
| 3583 | _GLIBCXX_NOEXCEPT |
| 3584 | : _M_dataplus(_S_empty_rep()._M_refdata(), _Alloc()) |
| 3585 | #else |
| 3586 | : _M_dataplus(_S_construct(size_type(), _CharT(), _Alloc()), _Alloc()) |
| 3587 | #endif |
| 3588 | { } |
| 3589 | |
| 3590 | /** |
| 3591 | * @brief Construct an empty string using allocator @a a. |
| 3592 | */ |
| 3593 | explicit |
| 3594 | basic_string(const _Alloc& __a) |
| 3595 | : _M_dataplus(_S_construct(size_type(), _CharT(), __a), __a) |
| 3596 | { } |
| 3597 | |
| 3598 | // NB: per LWG issue 42, semantics different from IS: |
| 3599 | /** |
| 3600 | * @brief Construct string with copy of value of @a str. |
| 3601 | * @param __str Source string. |
| 3602 | */ |
| 3603 | basic_string(const basic_string& __str) |
| 3604 | : _M_dataplus(__str._M_rep()->_M_grab(_Alloc(__str.get_allocator()), |
| 3605 | __str.get_allocator()), |
| 3606 | __str.get_allocator()) |
| 3607 | { } |
| 3608 | |
| 3609 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
| 3610 | // 2583. no way to supply an allocator for basic_string(str, pos) |
| 3611 | /** |
| 3612 | * @brief Construct string as copy of a substring. |
| 3613 | * @param __str Source string. |
| 3614 | * @param __pos Index of first character to copy from. |
| 3615 | * @param __a Allocator to use. |
| 3616 | */ |
| 3617 | basic_string(const basic_string& __str, size_type __pos, |
| 3618 | const _Alloc& __a = _Alloc()); |
| 3619 | |
| 3620 | /** |
| 3621 | * @brief Construct string as copy of a substring. |
| 3622 | * @param __str Source string. |
| 3623 | * @param __pos Index of first character to copy from. |
| 3624 | * @param __n Number of characters to copy. |
| 3625 | */ |
| 3626 | basic_string(const basic_string& __str, size_type __pos, |
| 3627 | size_type __n); |
| 3628 | /** |
| 3629 | * @brief Construct string as copy of a substring. |
| 3630 | * @param __str Source string. |
| 3631 | * @param __pos Index of first character to copy from. |
| 3632 | * @param __n Number of characters to copy. |
| 3633 | * @param __a Allocator to use. |
| 3634 | */ |
| 3635 | basic_string(const basic_string& __str, size_type __pos, |
| 3636 | size_type __n, const _Alloc& __a); |
| 3637 | |
| 3638 | /** |
| 3639 | * @brief Construct string initialized by a character %array. |
| 3640 | * @param __s Source character %array. |
| 3641 | * @param __n Number of characters to copy. |
| 3642 | * @param __a Allocator to use (default is default allocator). |
| 3643 | * |
| 3644 | * NB: @a __s must have at least @a __n characters, '\\0' |
| 3645 | * has no special meaning. |
| 3646 | */ |
| 3647 | basic_string(const _CharT* __s, size_type __n, |
| 3648 | const _Alloc& __a = _Alloc()) |
| 3649 | : _M_dataplus(_S_construct(__s, __s + __n, __a), __a) |
| 3650 | { } |
| 3651 | |
| 3652 | /** |
| 3653 | * @brief Construct string as copy of a C string. |
| 3654 | * @param __s Source C string. |
| 3655 | * @param __a Allocator to use (default is default allocator). |
| 3656 | */ |
| 3657 | #if __cpp_deduction_guides && ! defined _GLIBCXX_DEFINING_STRING_INSTANTIATIONS |
| 3658 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
| 3659 | // 3076. basic_string CTAD ambiguity |
| 3660 | template<typename = _RequireAllocator<_Alloc>> |
| 3661 | #endif |
| 3662 | basic_string(const _CharT* __s, const _Alloc& __a = _Alloc()) |
| 3663 | : _M_dataplus(_S_construct(__s, __s ? __s + traits_type::length(__s) : |
| 3664 | __s + npos, __a), __a) |
| 3665 | { } |
| 3666 | |
| 3667 | /** |
| 3668 | * @brief Construct string as multiple characters. |
| 3669 | * @param __n Number of characters. |
| 3670 | * @param __c Character to use. |
| 3671 | * @param __a Allocator to use (default is default allocator). |
| 3672 | */ |
| 3673 | basic_string(size_type __n, _CharT __c, const _Alloc& __a = _Alloc()) |
| 3674 | : _M_dataplus(_S_construct(__n, __c, __a), __a) |
| 3675 | { } |
| 3676 | |
| 3677 | #if __cplusplus >= 201103L |
| 3678 | /** |
| 3679 | * @brief Move construct string. |
| 3680 | * @param __str Source string. |
| 3681 | * |
| 3682 | * The newly-created string contains the exact contents of @a __str. |
| 3683 | * @a __str is a valid, but unspecified string. |
| 3684 | */ |
| 3685 | basic_string(basic_string&& __str) |
| 3686 | #if _GLIBCXX_FULLY_DYNAMIC_STRING == 0 |
| 3687 | noexcept // FIXME C++11: should always be noexcept. |
| 3688 | #endif |
| 3689 | : _M_dataplus(std::move(__str._M_dataplus)) |
| 3690 | { |
| 3691 | #if _GLIBCXX_FULLY_DYNAMIC_STRING == 0 |
| 3692 | __str._M_data(_S_empty_rep()._M_refdata()); |
| 3693 | #else |
| 3694 | __str._M_data(_S_construct(size_type(), _CharT(), get_allocator())); |
| 3695 | #endif |
| 3696 | } |
| 3697 | |
| 3698 | /** |
| 3699 | * @brief Construct string from an initializer %list. |
| 3700 | * @param __l std::initializer_list of characters. |
| 3701 | * @param __a Allocator to use (default is default allocator). |
| 3702 | */ |
| 3703 | basic_string(initializer_list<_CharT> __l, const _Alloc& __a = _Alloc()) |
| 3704 | : _M_dataplus(_S_construct(__l.begin(), __l.end(), __a), __a) |
| 3705 | { } |
| 3706 | |
| 3707 | basic_string(const basic_string& __str, const _Alloc& __a) |
| 3708 | : _M_dataplus(__str._M_rep()->_M_grab(__a, __str.get_allocator()), __a) |
| 3709 | { } |
| 3710 | |
| 3711 | basic_string(basic_string&& __str, const _Alloc& __a) |
| 3712 | : _M_dataplus(__str._M_data(), __a) |
| 3713 | { |
| 3714 | if (__a == __str.get_allocator()) |
| 3715 | { |
| 3716 | #if _GLIBCXX_FULLY_DYNAMIC_STRING == 0 |
| 3717 | __str._M_data(_S_empty_rep()._M_refdata()); |
| 3718 | #else |
| 3719 | __str._M_data(_S_construct(size_type(), _CharT(), __a)); |
| 3720 | #endif |
| 3721 | } |
| 3722 | else |
| 3723 | _M_dataplus._M_p = _S_construct(__str.begin(), __str.end(), __a); |
| 3724 | } |
| 3725 | #endif // C++11 |
| 3726 | |
| 3727 | /** |
| 3728 | * @brief Construct string as copy of a range. |
| 3729 | * @param __beg Start of range. |
| 3730 | * @param __end End of range. |
| 3731 | * @param __a Allocator to use (default is default allocator). |
| 3732 | */ |
| 3733 | template<class _InputIterator> |
| 3734 | basic_string(_InputIterator __beg, _InputIterator __end, |
| 3735 | const _Alloc& __a = _Alloc()) |
| 3736 | : _M_dataplus(_S_construct(__beg, __end, __a), __a) |
| 3737 | { } |
| 3738 | |
| 3739 | #if __cplusplus >= 201703L |
| 3740 | /** |
| 3741 | * @brief Construct string from a substring of a string_view. |
| 3742 | * @param __t Source object convertible to string view. |
| 3743 | * @param __pos The index of the first character to copy from __t. |
| 3744 | * @param __n The number of characters to copy from __t. |
| 3745 | * @param __a Allocator to use. |
| 3746 | */ |
| 3747 | template<typename _Tp, |
| 3748 | typename = enable_if_t<is_convertible_v<const _Tp&, __sv_type>>> |
| 3749 | basic_string(const _Tp& __t, size_type __pos, size_type __n, |
| 3750 | const _Alloc& __a = _Alloc()) |
| 3751 | : basic_string(_S_to_string_view(__t).substr(__pos, __n), __a) { } |
| 3752 | |
| 3753 | /** |
| 3754 | * @brief Construct string from a string_view. |
| 3755 | * @param __t Source object convertible to string view. |
| 3756 | * @param __a Allocator to use (default is default allocator). |
| 3757 | */ |
| 3758 | template<typename _Tp, typename = _If_sv<_Tp, void>> |
| 3759 | explicit |
| 3760 | basic_string(const _Tp& __t, const _Alloc& __a = _Alloc()) |
| 3761 | : basic_string(__sv_wrapper(_S_to_string_view(__t)), __a) { } |
| 3762 | #endif // C++17 |
| 3763 | |
| 3764 | /** |
| 3765 | * @brief Destroy the string instance. |
| 3766 | */ |
| 3767 | ~basic_string() _GLIBCXX_NOEXCEPT |
| 3768 | { _M_rep()->_M_dispose(this->get_allocator()); } |
| 3769 | |
| 3770 | /** |
| 3771 | * @brief Assign the value of @a str to this string. |
| 3772 | * @param __str Source string. |
| 3773 | */ |
| 3774 | basic_string& |
| 3775 | operator=(const basic_string& __str) |
| 3776 | { return this->assign(__str); } |
| 3777 | |
| 3778 | /** |
| 3779 | * @brief Copy contents of @a s into this string. |
| 3780 | * @param __s Source null-terminated string. |
| 3781 | */ |
| 3782 | basic_string& |
| 3783 | operator=(const _CharT* __s) |
| 3784 | { return this->assign(__s); } |
| 3785 | |
| 3786 | /** |
| 3787 | * @brief Set value to string of length 1. |
| 3788 | * @param __c Source character. |
| 3789 | * |
| 3790 | * Assigning to a character makes this string length 1 and |
| 3791 | * (*this)[0] == @a c. |
| 3792 | */ |
| 3793 | basic_string& |
| 3794 | operator=(_CharT __c) |
| 3795 | { |
| 3796 | this->assign(1, __c); |
| 3797 | return *this; |
| 3798 | } |
| 3799 | |
| 3800 | #if __cplusplus >= 201103L |
| 3801 | /** |
| 3802 | * @brief Move assign the value of @a str to this string. |
| 3803 | * @param __str Source string. |
| 3804 | * |
| 3805 | * The contents of @a str are moved into this string (without copying). |
| 3806 | * @a str is a valid, but unspecified string. |
| 3807 | */ |
| 3808 | basic_string& |
| 3809 | operator=(basic_string&& __str) |
| 3810 | _GLIBCXX_NOEXCEPT_IF(allocator_traits<_Alloc>::is_always_equal::value) |
| 3811 | { |
| 3812 | // NB: DR 1204. |
| 3813 | this->swap(__str); |
| 3814 | return *this; |
| 3815 | } |
| 3816 | |
| 3817 | /** |
| 3818 | * @brief Set value to string constructed from initializer %list. |
| 3819 | * @param __l std::initializer_list. |
| 3820 | */ |
| 3821 | basic_string& |
| 3822 | operator=(initializer_list<_CharT> __l) |
| 3823 | { |
| 3824 | this->assign(__l.begin(), __l.size()); |
| 3825 | return *this; |
| 3826 | } |
| 3827 | #endif // C++11 |
| 3828 | |
| 3829 | #if __cplusplus >= 201703L |
| 3830 | /** |
| 3831 | * @brief Set value to string constructed from a string_view. |
| 3832 | * @param __svt An object convertible to string_view. |
| 3833 | */ |
| 3834 | template<typename _Tp> |
| 3835 | _If_sv<_Tp, basic_string&> |
| 3836 | operator=(const _Tp& __svt) |
| 3837 | { return this->assign(__svt); } |
| 3838 | |
| 3839 | /** |
| 3840 | * @brief Convert to a string_view. |
| 3841 | * @return A string_view. |
| 3842 | */ |
| 3843 | operator __sv_type() const noexcept |
| 3844 | { return __sv_type(data(), size()); } |
| 3845 | #endif // C++17 |
| 3846 | |
| 3847 | // Iterators: |
| 3848 | /** |
| 3849 | * Returns a read/write iterator that points to the first character in |
| 3850 | * the %string. Unshares the string. |
| 3851 | */ |
| 3852 | iterator |
| 3853 | begin() // FIXME C++11: should be noexcept. |
| 3854 | { |
| 3855 | _M_leak(); |
| 3856 | return iterator(_M_data()); |
| 3857 | } |
| 3858 | |
| 3859 | /** |
| 3860 | * Returns a read-only (constant) iterator that points to the first |
| 3861 | * character in the %string. |
| 3862 | */ |
| 3863 | const_iterator |
| 3864 | begin() const _GLIBCXX_NOEXCEPT |
| 3865 | { return const_iterator(_M_data()); } |
| 3866 | |
| 3867 | /** |
| 3868 | * Returns a read/write iterator that points one past the last |
| 3869 | * character in the %string. Unshares the string. |
| 3870 | */ |
| 3871 | iterator |
| 3872 | end() // FIXME C++11: should be noexcept. |
| 3873 | { |
| 3874 | _M_leak(); |
| 3875 | return iterator(_M_data() + this->size()); |
| 3876 | } |
| 3877 | |
| 3878 | /** |
| 3879 | * Returns a read-only (constant) iterator that points one past the |
| 3880 | * last character in the %string. |
| 3881 | */ |
| 3882 | const_iterator |
| 3883 | end() const _GLIBCXX_NOEXCEPT |
| 3884 | { return const_iterator(_M_data() + this->size()); } |
| 3885 | |
| 3886 | /** |
| 3887 | * Returns a read/write reverse iterator that points to the last |
| 3888 | * character in the %string. Iteration is done in reverse element |
| 3889 | * order. Unshares the string. |
| 3890 | */ |
| 3891 | reverse_iterator |
| 3892 | rbegin() // FIXME C++11: should be noexcept. |
| 3893 | { return reverse_iterator(this->end()); } |
| 3894 | |
| 3895 | /** |
| 3896 | * Returns a read-only (constant) reverse iterator that points |
| 3897 | * to the last character in the %string. Iteration is done in |
| 3898 | * reverse element order. |
| 3899 | */ |
| 3900 | const_reverse_iterator |
| 3901 | rbegin() const _GLIBCXX_NOEXCEPT |
| 3902 | { return const_reverse_iterator(this->end()); } |
| 3903 | |
| 3904 | /** |
| 3905 | * Returns a read/write reverse iterator that points to one before the |
| 3906 | * first character in the %string. Iteration is done in reverse |
| 3907 | * element order. Unshares the string. |
| 3908 | */ |
| 3909 | reverse_iterator |
| 3910 | rend() // FIXME C++11: should be noexcept. |
| 3911 | { return reverse_iterator(this->begin()); } |
| 3912 | |
| 3913 | /** |
| 3914 | * Returns a read-only (constant) reverse iterator that points |
| 3915 | * to one before the first character in the %string. Iteration |
| 3916 | * is done in reverse element order. |
| 3917 | */ |
| 3918 | const_reverse_iterator |
| 3919 | rend() const _GLIBCXX_NOEXCEPT |
| 3920 | { return const_reverse_iterator(this->begin()); } |
| 3921 | |
| 3922 | #if __cplusplus >= 201103L |
| 3923 | /** |
| 3924 | * Returns a read-only (constant) iterator that points to the first |
| 3925 | * character in the %string. |
| 3926 | */ |
| 3927 | const_iterator |
| 3928 | cbegin() const noexcept |
| 3929 | { return const_iterator(this->_M_data()); } |
| 3930 | |
| 3931 | /** |
| 3932 | * Returns a read-only (constant) iterator that points one past the |
| 3933 | * last character in the %string. |
| 3934 | */ |
| 3935 | const_iterator |
| 3936 | cend() const noexcept |
| 3937 | { return const_iterator(this->_M_data() + this->size()); } |
| 3938 | |
| 3939 | /** |
| 3940 | * Returns a read-only (constant) reverse iterator that points |
| 3941 | * to the last character in the %string. Iteration is done in |
| 3942 | * reverse element order. |
| 3943 | */ |
| 3944 | const_reverse_iterator |
| 3945 | crbegin() const noexcept |
| 3946 | { return const_reverse_iterator(this->end()); } |
| 3947 | |
| 3948 | /** |
| 3949 | * Returns a read-only (constant) reverse iterator that points |
| 3950 | * to one before the first character in the %string. Iteration |
| 3951 | * is done in reverse element order. |
| 3952 | */ |
| 3953 | const_reverse_iterator |
| 3954 | crend() const noexcept |
| 3955 | { return const_reverse_iterator(this->begin()); } |
| 3956 | #endif |
| 3957 | |
| 3958 | public: |
| 3959 | // Capacity: |
| 3960 | /// Returns the number of characters in the string, not including any |
| 3961 | /// null-termination. |
| 3962 | size_type |
| 3963 | size() const _GLIBCXX_NOEXCEPT |
| 3964 | { return _M_rep()->_M_length; } |
| 3965 | |
| 3966 | /// Returns the number of characters in the string, not including any |
| 3967 | /// null-termination. |
| 3968 | size_type |
| 3969 | length() const _GLIBCXX_NOEXCEPT |
| 3970 | { return _M_rep()->_M_length; } |
| 3971 | |
| 3972 | /// Returns the size() of the largest possible %string. |
| 3973 | size_type |
| 3974 | max_size() const _GLIBCXX_NOEXCEPT |
| 3975 | { return _Rep::_S_max_size; } |
| 3976 | |
| 3977 | /** |
| 3978 | * @brief Resizes the %string to the specified number of characters. |
| 3979 | * @param __n Number of characters the %string should contain. |
| 3980 | * @param __c Character to fill any new elements. |
| 3981 | * |
| 3982 | * This function will %resize the %string to the specified |
| 3983 | * number of characters. If the number is smaller than the |
| 3984 | * %string's current size the %string is truncated, otherwise |
| 3985 | * the %string is extended and new elements are %set to @a __c. |
| 3986 | */ |
| 3987 | void |
| 3988 | resize(size_type __n, _CharT __c); |
| 3989 | |
| 3990 | /** |
| 3991 | * @brief Resizes the %string to the specified number of characters. |
| 3992 | * @param __n Number of characters the %string should contain. |
| 3993 | * |
| 3994 | * This function will resize the %string to the specified length. If |
| 3995 | * the new size is smaller than the %string's current size the %string |
| 3996 | * is truncated, otherwise the %string is extended and new characters |
| 3997 | * are default-constructed. For basic types such as char, this means |
| 3998 | * setting them to 0. |
| 3999 | */ |
| 4000 | void |
| 4001 | resize(size_type __n) |
| 4002 | { this->resize(__n, _CharT()); } |
| 4003 | |
| 4004 | #if __cplusplus >= 201103L |
| 4005 | #pragma GCC diagnostic push |
| 4006 | #pragma GCC diagnostic ignored "-Wdeprecated-declarations" |
| 4007 | /// A non-binding request to reduce capacity() to size(). |
| 4008 | void |
| 4009 | shrink_to_fit() noexcept |
| 4010 | { reserve(); } |
| 4011 | #pragma GCC diagnostic pop |
| 4012 | #endif |
| 4013 | |
| 4014 | /** |
| 4015 | * Returns the total number of characters that the %string can hold |
| 4016 | * before needing to allocate more memory. |
| 4017 | */ |
| 4018 | size_type |
| 4019 | capacity() const _GLIBCXX_NOEXCEPT |
| 4020 | { return _M_rep()->_M_capacity; } |
| 4021 | |
| 4022 | /** |
| 4023 | * @brief Attempt to preallocate enough memory for specified number of |
| 4024 | * characters. |
| 4025 | * @param __res_arg Number of characters required. |
| 4026 | * @throw std::length_error If @a __res_arg exceeds @c max_size(). |
| 4027 | * |
| 4028 | * This function attempts to reserve enough memory for the |
| 4029 | * %string to hold the specified number of characters. If the |
| 4030 | * number requested is more than max_size(), length_error is |
| 4031 | * thrown. |
| 4032 | * |
| 4033 | * The advantage of this function is that if optimal code is a |
| 4034 | * necessity and the user can determine the string length that will be |
| 4035 | * required, the user can reserve the memory in %advance, and thus |
| 4036 | * prevent a possible reallocation of memory and copying of %string |
| 4037 | * data. |
| 4038 | */ |
| 4039 | void |
| 4040 | reserve(size_type __res_arg); |
| 4041 | |
| 4042 | /// Equivalent to shrink_to_fit(). |
| 4043 | #if __cplusplus > 201703L |
| 4044 | [[deprecated("use shrink_to_fit() instead")]] |
| 4045 | #endif |
| 4046 | void |
| 4047 | reserve(); |
| 4048 | |
| 4049 | /** |
| 4050 | * Erases the string, making it empty. |
| 4051 | */ |
| 4052 | #if _GLIBCXX_FULLY_DYNAMIC_STRING == 0 |
| 4053 | void |
| 4054 | clear() _GLIBCXX_NOEXCEPT |
| 4055 | { |
| 4056 | if (_M_rep()->_M_is_shared()) |
| 4057 | { |
| 4058 | _M_rep()->_M_dispose(this->get_allocator()); |
| 4059 | _M_data(_S_empty_rep()._M_refdata()); |
| 4060 | } |
| 4061 | else |
| 4062 | _M_rep()->_M_set_length_and_sharable(0); |
| 4063 | } |
| 4064 | #else |
| 4065 | // PR 56166: this should not throw. |
| 4066 | void |
| 4067 | clear() |
| 4068 | { _M_mutate(0, this->size(), 0); } |
| 4069 | #endif |
| 4070 | |
| 4071 | /** |
| 4072 | * Returns true if the %string is empty. Equivalent to |
| 4073 | * <code>*this == ""</code>. |
| 4074 | */ |
| 4075 | _GLIBCXX_NODISCARD bool |
| 4076 | empty() const _GLIBCXX_NOEXCEPT |
| 4077 | { return this->size() == 0; } |
| 4078 | |
| 4079 | // Element access: |
| 4080 | /** |
| 4081 | * @brief Subscript access to the data contained in the %string. |
| 4082 | * @param __pos The index of the character to access. |
| 4083 | * @return Read-only (constant) reference to the character. |
| 4084 | * |
| 4085 | * This operator allows for easy, array-style, data access. |
| 4086 | * Note that data access with this operator is unchecked and |
| 4087 | * out_of_range lookups are not defined. (For checked lookups |
| 4088 | * see at().) |
| 4089 | */ |
| 4090 | const_reference |
| 4091 | operator[] (size_type __pos) const _GLIBCXX_NOEXCEPT |
| 4092 | { |
| 4093 | __glibcxx_assert(__pos <= size()); |
| 4094 | return _M_data()[__pos]; |
| 4095 | } |
| 4096 | |
| 4097 | /** |
| 4098 | * @brief Subscript access to the data contained in the %string. |
| 4099 | * @param __pos The index of the character to access. |
| 4100 | * @return Read/write reference to the character. |
| 4101 | * |
| 4102 | * This operator allows for easy, array-style, data access. |
| 4103 | * Note that data access with this operator is unchecked and |
| 4104 | * out_of_range lookups are not defined. (For checked lookups |
| 4105 | * see at().) Unshares the string. |
| 4106 | */ |
| 4107 | reference |
| 4108 | operator[](size_type __pos) |
| 4109 | { |
| 4110 | // Allow pos == size() both in C++98 mode, as v3 extension, |
| 4111 | // and in C++11 mode. |
| 4112 | __glibcxx_assert(__pos <= size()); |
| 4113 | // In pedantic mode be strict in C++98 mode. |
| 4114 | _GLIBCXX_DEBUG_PEDASSERT(__cplusplus >= 201103L || __pos < size()); |
| 4115 | _M_leak(); |
| 4116 | return _M_data()[__pos]; |
| 4117 | } |
| 4118 | |
| 4119 | /** |
| 4120 | * @brief Provides access to the data contained in the %string. |
| 4121 | * @param __n The index of the character to access. |
| 4122 | * @return Read-only (const) reference to the character. |
| 4123 | * @throw std::out_of_range If @a n is an invalid index. |
| 4124 | * |
| 4125 | * This function provides for safer data access. The parameter is |
| 4126 | * first checked that it is in the range of the string. The function |
| 4127 | * throws out_of_range if the check fails. |
| 4128 | */ |
| 4129 | const_reference |
| 4130 | at(size_type __n) const |
| 4131 | { |
| 4132 | if (__n >= this->size()) |
| 4133 | __throw_out_of_range_fmt(__N("basic_string::at: __n " |
| 4134 | "(which is %zu) >= this->size() " |
| 4135 | "(which is %zu)"), |
| 4136 | __n, this->size()); |
| 4137 | return _M_data()[__n]; |
| 4138 | } |
| 4139 | |
| 4140 | /** |
| 4141 | * @brief Provides access to the data contained in the %string. |
| 4142 | * @param __n The index of the character to access. |
| 4143 | * @return Read/write reference to the character. |
| 4144 | * @throw std::out_of_range If @a n is an invalid index. |
| 4145 | * |
| 4146 | * This function provides for safer data access. The parameter is |
| 4147 | * first checked that it is in the range of the string. The function |
| 4148 | * throws out_of_range if the check fails. Success results in |
| 4149 | * unsharing the string. |
| 4150 | */ |
| 4151 | reference |
| 4152 | at(size_type __n) |
| 4153 | { |
| 4154 | if (__n >= size()) |
| 4155 | __throw_out_of_range_fmt(__N("basic_string::at: __n " |
| 4156 | "(which is %zu) >= this->size() " |
| 4157 | "(which is %zu)"), |
| 4158 | __n, this->size()); |
| 4159 | _M_leak(); |
| 4160 | return _M_data()[__n]; |
| 4161 | } |
| 4162 | |
| 4163 | #if __cplusplus >= 201103L |
| 4164 | /** |
| 4165 | * Returns a read/write reference to the data at the first |
| 4166 | * element of the %string. |
| 4167 | */ |
| 4168 | reference |
| 4169 | front() |
| 4170 | { |
| 4171 | __glibcxx_assert(!empty()); |
| 4172 | return operator[](0); |
| 4173 | } |
| 4174 | |
| 4175 | /** |
| 4176 | * Returns a read-only (constant) reference to the data at the first |
| 4177 | * element of the %string. |
| 4178 | */ |
| 4179 | const_reference |
| 4180 | front() const noexcept |
| 4181 | { |
| 4182 | __glibcxx_assert(!empty()); |
| 4183 | return operator[](0); |
| 4184 | } |
| 4185 | |
| 4186 | /** |
| 4187 | * Returns a read/write reference to the data at the last |
| 4188 | * element of the %string. |
| 4189 | */ |
| 4190 | reference |
| 4191 | back() |
| 4192 | { |
| 4193 | __glibcxx_assert(!empty()); |
| 4194 | return operator[](this->size() - 1); |
| 4195 | } |
| 4196 | |
| 4197 | /** |
| 4198 | * Returns a read-only (constant) reference to the data at the |
| 4199 | * last element of the %string. |
| 4200 | */ |
| 4201 | const_reference |
| 4202 | back() const noexcept |
| 4203 | { |
| 4204 | __glibcxx_assert(!empty()); |
| 4205 | return operator[](this->size() - 1); |
| 4206 | } |
| 4207 | #endif |
| 4208 | |
| 4209 | // Modifiers: |
| 4210 | /** |
| 4211 | * @brief Append a string to this string. |
| 4212 | * @param __str The string to append. |
| 4213 | * @return Reference to this string. |
| 4214 | */ |
| 4215 | basic_string& |
| 4216 | operator+=(const basic_string& __str) |
| 4217 | { return this->append(__str); } |
| 4218 | |
| 4219 | /** |
| 4220 | * @brief Append a C string. |
| 4221 | * @param __s The C string to append. |
| 4222 | * @return Reference to this string. |
| 4223 | */ |
| 4224 | basic_string& |
| 4225 | operator+=(const _CharT* __s) |
| 4226 | { return this->append(__s); } |
| 4227 | |
| 4228 | /** |
| 4229 | * @brief Append a character. |
| 4230 | * @param __c The character to append. |
| 4231 | * @return Reference to this string. |
| 4232 | */ |
| 4233 | basic_string& |
| 4234 | operator+=(_CharT __c) |
| 4235 | { |
| 4236 | this->push_back(__c); |
| 4237 | return *this; |
| 4238 | } |
| 4239 | |
| 4240 | #if __cplusplus >= 201103L |
| 4241 | /** |
| 4242 | * @brief Append an initializer_list of characters. |
| 4243 | * @param __l The initializer_list of characters to be appended. |
| 4244 | * @return Reference to this string. |
| 4245 | */ |
| 4246 | basic_string& |
| 4247 | operator+=(initializer_list<_CharT> __l) |
| 4248 | { return this->append(__l.begin(), __l.size()); } |
| 4249 | #endif // C++11 |
| 4250 | |
| 4251 | #if __cplusplus >= 201703L |
| 4252 | /** |
| 4253 | * @brief Append a string_view. |
| 4254 | * @param __svt The object convertible to string_view to be appended. |
| 4255 | * @return Reference to this string. |
| 4256 | */ |
| 4257 | template<typename _Tp> |
| 4258 | _If_sv<_Tp, basic_string&> |
| 4259 | operator+=(const _Tp& __svt) |
| 4260 | { return this->append(__svt); } |
| 4261 | #endif // C++17 |
| 4262 | |
| 4263 | /** |
| 4264 | * @brief Append a string to this string. |
| 4265 | * @param __str The string to append. |
| 4266 | * @return Reference to this string. |
| 4267 | */ |
| 4268 | basic_string& |
| 4269 | append(const basic_string& __str); |
| 4270 | |
| 4271 | /** |
| 4272 | * @brief Append a substring. |
| 4273 | * @param __str The string to append. |
| 4274 | * @param __pos Index of the first character of str to append. |
| 4275 | * @param __n The number of characters to append. |
| 4276 | * @return Reference to this string. |
| 4277 | * @throw std::out_of_range if @a __pos is not a valid index. |
| 4278 | * |
| 4279 | * This function appends @a __n characters from @a __str |
| 4280 | * starting at @a __pos to this string. If @a __n is is larger |
| 4281 | * than the number of available characters in @a __str, the |
| 4282 | * remainder of @a __str is appended. |
| 4283 | */ |
| 4284 | basic_string& |
| 4285 | append(const basic_string& __str, size_type __pos, size_type __n = npos); |
| 4286 | |
| 4287 | /** |
| 4288 | * @brief Append a C substring. |
| 4289 | * @param __s The C string to append. |
| 4290 | * @param __n The number of characters to append. |
| 4291 | * @return Reference to this string. |
| 4292 | */ |
| 4293 | basic_string& |
| 4294 | append(const _CharT* __s, size_type __n); |
| 4295 | |
| 4296 | /** |
| 4297 | * @brief Append a C string. |
| 4298 | * @param __s The C string to append. |
| 4299 | * @return Reference to this string. |
| 4300 | */ |
| 4301 | basic_string& |
| 4302 | append(const _CharT* __s) |
| 4303 | { |
| 4304 | __glibcxx_requires_string(__s); |
| 4305 | return this->append(__s, traits_type::length(__s)); |
| 4306 | } |
| 4307 | |
| 4308 | /** |
| 4309 | * @brief Append multiple characters. |
| 4310 | * @param __n The number of characters to append. |
| 4311 | * @param __c The character to use. |
| 4312 | * @return Reference to this string. |
| 4313 | * |
| 4314 | * Appends __n copies of __c to this string. |
| 4315 | */ |
| 4316 | basic_string& |
| 4317 | append(size_type __n, _CharT __c); |
| 4318 | |
| 4319 | #if __cplusplus >= 201103L |
| 4320 | /** |
| 4321 | * @brief Append an initializer_list of characters. |
| 4322 | * @param __l The initializer_list of characters to append. |
| 4323 | * @return Reference to this string. |
| 4324 | */ |
| 4325 | basic_string& |
| 4326 | append(initializer_list<_CharT> __l) |
| 4327 | { return this->append(__l.begin(), __l.size()); } |
| 4328 | #endif // C++11 |
| 4329 | |
| 4330 | /** |
| 4331 | * @brief Append a range of characters. |
| 4332 | * @param __first Iterator referencing the first character to append. |
| 4333 | * @param __last Iterator marking the end of the range. |
| 4334 | * @return Reference to this string. |
| 4335 | * |
| 4336 | * Appends characters in the range [__first,__last) to this string. |
| 4337 | */ |
| 4338 | template<class _InputIterator> |
| 4339 | basic_string& |
| 4340 | append(_InputIterator __first, _InputIterator __last) |
| 4341 | { return this->replace(_M_iend(), _M_iend(), __first, __last); } |
| 4342 | |
| 4343 | #if __cplusplus >= 201703L |
| 4344 | /** |
| 4345 | * @brief Append a string_view. |
| 4346 | * @param __svt The object convertible to string_view to be appended. |
| 4347 | * @return Reference to this string. |
| 4348 | */ |
| 4349 | template<typename _Tp> |
| 4350 | _If_sv<_Tp, basic_string&> |
| 4351 | append(const _Tp& __svt) |
| 4352 | { |
| 4353 | __sv_type __sv = __svt; |
| 4354 | return this->append(__sv.data(), __sv.size()); |
| 4355 | } |
| 4356 | |
| 4357 | /** |
| 4358 | * @brief Append a range of characters from a string_view. |
| 4359 | * @param __svt The object convertible to string_view to be appended |
| 4360 | * from. |
| 4361 | * @param __pos The position in the string_view to append from. |
| 4362 | * @param __n The number of characters to append from the string_view. |
| 4363 | * @return Reference to this string. |
| 4364 | */ |
| 4365 | template<typename _Tp> |
| 4366 | _If_sv<_Tp, basic_string&> |
| 4367 | append(const _Tp& __svt, size_type __pos, size_type __n = npos) |
| 4368 | { |
| 4369 | __sv_type __sv = __svt; |
| 4370 | return append(__sv.data() |
| 4371 | + std::__sv_check(__sv.size(), __pos, "basic_string::append"), |
| 4372 | std::__sv_limit(__sv.size(), __pos, __n)); |
| 4373 | } |
| 4374 | #endif // C++17 |
| 4375 | |
| 4376 | /** |
| 4377 | * @brief Append a single character. |
| 4378 | * @param __c Character to append. |
| 4379 | */ |
| 4380 | void |
| 4381 | push_back(_CharT __c) |
| 4382 | { |
| 4383 | const size_type __len = 1 + this->size(); |
| 4384 | if (__len > this->capacity() || _M_rep()->_M_is_shared()) |
| 4385 | this->reserve(__len); |
| 4386 | traits_type::assign(_M_data()[this->size()], __c); |
| 4387 | _M_rep()->_M_set_length_and_sharable(__len); |
| 4388 | } |
| 4389 | |
| 4390 | /** |
| 4391 | * @brief Set value to contents of another string. |
| 4392 | * @param __str Source string to use. |
| 4393 | * @return Reference to this string. |
| 4394 | */ |
| 4395 | basic_string& |
| 4396 | assign(const basic_string& __str); |
| 4397 | |
| 4398 | #if __cplusplus >= 201103L |
| 4399 | /** |
| 4400 | * @brief Set value to contents of another string. |
| 4401 | * @param __str Source string to use. |
| 4402 | * @return Reference to this string. |
| 4403 | * |
| 4404 | * This function sets this string to the exact contents of @a __str. |
| 4405 | * @a __str is a valid, but unspecified string. |
| 4406 | */ |
| 4407 | basic_string& |
| 4408 | assign(basic_string&& __str) |
| 4409 | noexcept(allocator_traits<_Alloc>::is_always_equal::value) |
| 4410 | { |
| 4411 | this->swap(__str); |
| 4412 | return *this; |
| 4413 | } |
| 4414 | #endif // C++11 |
| 4415 | |
| 4416 | /** |
| 4417 | * @brief Set value to a substring of a string. |
| 4418 | * @param __str The string to use. |
| 4419 | * @param __pos Index of the first character of str. |
| 4420 | * @param __n Number of characters to use. |
| 4421 | * @return Reference to this string. |
| 4422 | * @throw std::out_of_range if @a pos is not a valid index. |
| 4423 | * |
| 4424 | * This function sets this string to the substring of @a __str |
| 4425 | * consisting of @a __n characters at @a __pos. If @a __n is |
| 4426 | * is larger than the number of available characters in @a |
| 4427 | * __str, the remainder of @a __str is used. |
| 4428 | */ |
| 4429 | basic_string& |
| 4430 | assign(const basic_string& __str, size_type __pos, size_type __n = npos) |
| 4431 | { return this->assign(__str._M_data() |
| 4432 | + __str._M_check(__pos, "basic_string::assign"), |
| 4433 | __str._M_limit(__pos, __n)); } |
| 4434 | |
| 4435 | /** |
| 4436 | * @brief Set value to a C substring. |
| 4437 | * @param __s The C string to use. |
| 4438 | * @param __n Number of characters to use. |
| 4439 | * @return Reference to this string. |
| 4440 | * |
| 4441 | * This function sets the value of this string to the first @a __n |
| 4442 | * characters of @a __s. If @a __n is is larger than the number of |
| 4443 | * available characters in @a __s, the remainder of @a __s is used. |
| 4444 | */ |
| 4445 | basic_string& |
| 4446 | assign(const _CharT* __s, size_type __n); |
| 4447 | |
| 4448 | /** |
| 4449 | * @brief Set value to contents of a C string. |
| 4450 | * @param __s The C string to use. |
| 4451 | * @return Reference to this string. |
| 4452 | * |
| 4453 | * This function sets the value of this string to the value of @a __s. |
| 4454 | * The data is copied, so there is no dependence on @a __s once the |
| 4455 | * function returns. |
| 4456 | */ |
| 4457 | basic_string& |
| 4458 | assign(const _CharT* __s) |
| 4459 | { |
| 4460 | __glibcxx_requires_string(__s); |
| 4461 | return this->assign(__s, traits_type::length(__s)); |
| 4462 | } |
| 4463 | |
| 4464 | /** |
| 4465 | * @brief Set value to multiple characters. |
| 4466 | * @param __n Length of the resulting string. |
| 4467 | * @param __c The character to use. |
| 4468 | * @return Reference to this string. |
| 4469 | * |
| 4470 | * This function sets the value of this string to @a __n copies of |
| 4471 | * character @a __c. |
| 4472 | */ |
| 4473 | basic_string& |
| 4474 | assign(size_type __n, _CharT __c) |
| 4475 | { return _M_replace_aux(size_type(0), this->size(), __n, __c); } |
| 4476 | |
| 4477 | /** |
| 4478 | * @brief Set value to a range of characters. |
| 4479 | * @param __first Iterator referencing the first character to append. |
| 4480 | * @param __last Iterator marking the end of the range. |
| 4481 | * @return Reference to this string. |
| 4482 | * |
| 4483 | * Sets value of string to characters in the range [__first,__last). |
| 4484 | */ |
| 4485 | template<class _InputIterator> |
| 4486 | basic_string& |
| 4487 | assign(_InputIterator __first, _InputIterator __last) |
| 4488 | { return this->replace(_M_ibegin(), _M_iend(), __first, __last); } |
| 4489 | |
| 4490 | #if __cplusplus >= 201103L |
| 4491 | /** |
| 4492 | * @brief Set value to an initializer_list of characters. |
| 4493 | * @param __l The initializer_list of characters to assign. |
| 4494 | * @return Reference to this string. |
| 4495 | */ |
| 4496 | basic_string& |
| 4497 | assign(initializer_list<_CharT> __l) |
| 4498 | { return this->assign(__l.begin(), __l.size()); } |
| 4499 | #endif // C++11 |
| 4500 | |
| 4501 | #if __cplusplus >= 201703L |
| 4502 | /** |
| 4503 | * @brief Set value from a string_view. |
| 4504 | * @param __svt The source object convertible to string_view. |
| 4505 | * @return Reference to this string. |
| 4506 | */ |
| 4507 | template<typename _Tp> |
| 4508 | _If_sv<_Tp, basic_string&> |
| 4509 | assign(const _Tp& __svt) |
| 4510 | { |
| 4511 | __sv_type __sv = __svt; |
| 4512 | return this->assign(__sv.data(), __sv.size()); |
| 4513 | } |
| 4514 | |
| 4515 | /** |
| 4516 | * @brief Set value from a range of characters in a string_view. |
| 4517 | * @param __svt The source object convertible to string_view. |
| 4518 | * @param __pos The position in the string_view to assign from. |
| 4519 | * @param __n The number of characters to assign. |
| 4520 | * @return Reference to this string. |
| 4521 | */ |
| 4522 | template<typename _Tp> |
| 4523 | _If_sv<_Tp, basic_string&> |
| 4524 | assign(const _Tp& __svt, size_type __pos, size_type __n = npos) |
| 4525 | { |
| 4526 | __sv_type __sv = __svt; |
| 4527 | return assign(__sv.data() |
| 4528 | + std::__sv_check(__sv.size(), __pos, "basic_string::assign"), |
| 4529 | std::__sv_limit(__sv.size(), __pos, __n)); |
| 4530 | } |
| 4531 | #endif // C++17 |
| 4532 | |
| 4533 | /** |
| 4534 | * @brief Insert multiple characters. |
| 4535 | * @param __p Iterator referencing location in string to insert at. |
| 4536 | * @param __n Number of characters to insert |
| 4537 | * @param __c The character to insert. |
| 4538 | * @throw std::length_error If new length exceeds @c max_size(). |
| 4539 | * |
| 4540 | * Inserts @a __n copies of character @a __c starting at the |
| 4541 | * position referenced by iterator @a __p. If adding |
| 4542 | * characters causes the length to exceed max_size(), |
| 4543 | * length_error is thrown. The value of the string doesn't |
| 4544 | * change if an error is thrown. |
| 4545 | */ |
| 4546 | void |
| 4547 | insert(iterator __p, size_type __n, _CharT __c) |
| 4548 | { this->replace(__p, __p, __n, __c); } |
| 4549 | |
| 4550 | /** |
| 4551 | * @brief Insert a range of characters. |
| 4552 | * @param __p Iterator referencing location in string to insert at. |
| 4553 | * @param __beg Start of range. |
| 4554 | * @param __end End of range. |
| 4555 | * @throw std::length_error If new length exceeds @c max_size(). |
| 4556 | * |
| 4557 | * Inserts characters in range [__beg,__end). If adding |
| 4558 | * characters causes the length to exceed max_size(), |
| 4559 | * length_error is thrown. The value of the string doesn't |
| 4560 | * change if an error is thrown. |
| 4561 | */ |
| 4562 | template<class _InputIterator> |
| 4563 | void |
| 4564 | insert(iterator __p, _InputIterator __beg, _InputIterator __end) |
| 4565 | { this->replace(__p, __p, __beg, __end); } |
| 4566 | |
| 4567 | #if __cplusplus >= 201103L |
| 4568 | /** |
| 4569 | * @brief Insert an initializer_list of characters. |
| 4570 | * @param __p Iterator referencing location in string to insert at. |
| 4571 | * @param __l The initializer_list of characters to insert. |
| 4572 | * @throw std::length_error If new length exceeds @c max_size(). |
| 4573 | */ |
| 4574 | void |
| 4575 | insert(iterator __p, initializer_list<_CharT> __l) |
| 4576 | { |
| 4577 | _GLIBCXX_DEBUG_PEDASSERT(__p >= _M_ibegin() && __p <= _M_iend()); |
| 4578 | this->insert(__p - _M_ibegin(), __l.begin(), __l.size()); |
| 4579 | } |
| 4580 | #endif // C++11 |
| 4581 | |
| 4582 | /** |
| 4583 | * @brief Insert value of a string. |
| 4584 | * @param __pos1 Position in string to insert at. |
| 4585 | * @param __str The string to insert. |
| 4586 | * @return Reference to this string. |
| 4587 | * @throw std::length_error If new length exceeds @c max_size(). |
| 4588 | * |
| 4589 | * Inserts value of @a __str starting at @a __pos1. If adding |
| 4590 | * characters causes the length to exceed max_size(), |
| 4591 | * length_error is thrown. The value of the string doesn't |
| 4592 | * change if an error is thrown. |
| 4593 | */ |
| 4594 | basic_string& |
| 4595 | insert(size_type __pos1, const basic_string& __str) |
| 4596 | { return this->insert(__pos1, __str, size_type(0), __str.size()); } |
| 4597 | |
| 4598 | /** |
| 4599 | * @brief Insert a substring. |
| 4600 | * @param __pos1 Position in string to insert at. |
| 4601 | * @param __str The string to insert. |
| 4602 | * @param __pos2 Start of characters in str to insert. |
| 4603 | * @param __n Number of characters to insert. |
| 4604 | * @return Reference to this string. |
| 4605 | * @throw std::length_error If new length exceeds @c max_size(). |
| 4606 | * @throw std::out_of_range If @a pos1 > size() or |
| 4607 | * @a __pos2 > @a str.size(). |
| 4608 | * |
| 4609 | * Starting at @a pos1, insert @a __n character of @a __str |
| 4610 | * beginning with @a __pos2. If adding characters causes the |
| 4611 | * length to exceed max_size(), length_error is thrown. If @a |
| 4612 | * __pos1 is beyond the end of this string or @a __pos2 is |
| 4613 | * beyond the end of @a __str, out_of_range is thrown. The |
| 4614 | * value of the string doesn't change if an error is thrown. |
| 4615 | */ |
| 4616 | basic_string& |
| 4617 | insert(size_type __pos1, const basic_string& __str, |
| 4618 | size_type __pos2, size_type __n = npos) |
| 4619 | { return this->insert(__pos1, __str._M_data() |
| 4620 | + __str._M_check(__pos2, "basic_string::insert"), |
| 4621 | __str._M_limit(__pos2, __n)); } |
| 4622 | |
| 4623 | /** |
| 4624 | * @brief Insert a C substring. |
| 4625 | * @param __pos Position in string to insert at. |
| 4626 | * @param __s The C string to insert. |
| 4627 | * @param __n The number of characters to insert. |
| 4628 | * @return Reference to this string. |
| 4629 | * @throw std::length_error If new length exceeds @c max_size(). |
| 4630 | * @throw std::out_of_range If @a __pos is beyond the end of this |
| 4631 | * string. |
| 4632 | * |
| 4633 | * Inserts the first @a __n characters of @a __s starting at @a |
| 4634 | * __pos. If adding characters causes the length to exceed |
| 4635 | * max_size(), length_error is thrown. If @a __pos is beyond |
| 4636 | * end(), out_of_range is thrown. The value of the string |
| 4637 | * doesn't change if an error is thrown. |
| 4638 | */ |
| 4639 | basic_string& |
| 4640 | insert(size_type __pos, const _CharT* __s, size_type __n); |
| 4641 | |
| 4642 | /** |
| 4643 | * @brief Insert a C string. |
| 4644 | * @param __pos Position in string to insert at. |
| 4645 | * @param __s The C string to insert. |
| 4646 | * @return Reference to this string. |
| 4647 | * @throw std::length_error If new length exceeds @c max_size(). |
| 4648 | * @throw std::out_of_range If @a pos is beyond the end of this |
| 4649 | * string. |
| 4650 | * |
| 4651 | * Inserts the first @a n characters of @a __s starting at @a __pos. If |
| 4652 | * adding characters causes the length to exceed max_size(), |
| 4653 | * length_error is thrown. If @a __pos is beyond end(), out_of_range is |
| 4654 | * thrown. The value of the string doesn't change if an error is |
| 4655 | * thrown. |
| 4656 | */ |
| 4657 | basic_string& |
| 4658 | insert(size_type __pos, const _CharT* __s) |
| 4659 | { |
| 4660 | __glibcxx_requires_string(__s); |
| 4661 | return this->insert(__pos, __s, traits_type::length(__s)); |
| 4662 | } |
| 4663 | |
| 4664 | /** |
| 4665 | * @brief Insert multiple characters. |
| 4666 | * @param __pos Index in string to insert at. |
| 4667 | * @param __n Number of characters to insert |
| 4668 | * @param __c The character to insert. |
| 4669 | * @return Reference to this string. |
| 4670 | * @throw std::length_error If new length exceeds @c max_size(). |
| 4671 | * @throw std::out_of_range If @a __pos is beyond the end of this |
| 4672 | * string. |
| 4673 | * |
| 4674 | * Inserts @a __n copies of character @a __c starting at index |
| 4675 | * @a __pos. If adding characters causes the length to exceed |
| 4676 | * max_size(), length_error is thrown. If @a __pos > length(), |
| 4677 | * out_of_range is thrown. The value of the string doesn't |
| 4678 | * change if an error is thrown. |
| 4679 | */ |
| 4680 | basic_string& |
| 4681 | insert(size_type __pos, size_type __n, _CharT __c) |
| 4682 | { return _M_replace_aux(_M_check(__pos, "basic_string::insert"), |
| 4683 | size_type(0), __n, __c); } |
| 4684 | |
| 4685 | /** |
| 4686 | * @brief Insert one character. |
| 4687 | * @param __p Iterator referencing position in string to insert at. |
| 4688 | * @param __c The character to insert. |
| 4689 | * @return Iterator referencing newly inserted char. |
| 4690 | * @throw std::length_error If new length exceeds @c max_size(). |
| 4691 | * |
| 4692 | * Inserts character @a __c at position referenced by @a __p. |
| 4693 | * If adding character causes the length to exceed max_size(), |
| 4694 | * length_error is thrown. If @a __p is beyond end of string, |
| 4695 | * out_of_range is thrown. The value of the string doesn't |
| 4696 | * change if an error is thrown. |
| 4697 | */ |
| 4698 | iterator |
| 4699 | insert(iterator __p, _CharT __c) |
| 4700 | { |
| 4701 | _GLIBCXX_DEBUG_PEDASSERT(__p >= _M_ibegin() && __p <= _M_iend()); |
| 4702 | const size_type __pos = __p - _M_ibegin(); |
| 4703 | _M_replace_aux(__pos, size_type(0), size_type(1), __c); |
| 4704 | _M_rep()->_M_set_leaked(); |
| 4705 | return iterator(_M_data() + __pos); |
| 4706 | } |
| 4707 | |
| 4708 | #if __cplusplus >= 201703L |
| 4709 | /** |
| 4710 | * @brief Insert a string_view. |
| 4711 | * @param __pos Position in string to insert at. |
| 4712 | * @param __svt The object convertible to string_view to insert. |
| 4713 | * @return Reference to this string. |
| 4714 | */ |
| 4715 | template<typename _Tp> |
| 4716 | _If_sv<_Tp, basic_string&> |
| 4717 | insert(size_type __pos, const _Tp& __svt) |
| 4718 | { |
| 4719 | __sv_type __sv = __svt; |
| 4720 | return this->insert(__pos, __sv.data(), __sv.size()); |
| 4721 | } |
| 4722 | |
| 4723 | /** |
| 4724 | * @brief Insert a string_view. |
| 4725 | * @param __pos1 Position in string to insert at. |
| 4726 | * @param __svt The object convertible to string_view to insert from. |
| 4727 | * @param __pos2 Position in string_view to insert from. |
| 4728 | * @param __n The number of characters to insert. |
| 4729 | * @return Reference to this string. |
| 4730 | */ |
| 4731 | template<typename _Tp> |
| 4732 | _If_sv<_Tp, basic_string&> |
| 4733 | insert(size_type __pos1, const _Tp& __svt, |
| 4734 | size_type __pos2, size_type __n = npos) |
| 4735 | { |
| 4736 | __sv_type __sv = __svt; |
| 4737 | return this->replace(__pos1, size_type(0), __sv.data() |
| 4738 | + std::__sv_check(__sv.size(), __pos2, "basic_string::insert"), |
| 4739 | std::__sv_limit(__sv.size(), __pos2, __n)); |
| 4740 | } |
| 4741 | #endif // C++17 |
| 4742 | |
| 4743 | /** |
| 4744 | * @brief Remove characters. |
| 4745 | * @param __pos Index of first character to remove (default 0). |
| 4746 | * @param __n Number of characters to remove (default remainder). |
| 4747 | * @return Reference to this string. |
| 4748 | * @throw std::out_of_range If @a pos is beyond the end of this |
| 4749 | * string. |
| 4750 | * |
| 4751 | * Removes @a __n characters from this string starting at @a |
| 4752 | * __pos. The length of the string is reduced by @a __n. If |
| 4753 | * there are < @a __n characters to remove, the remainder of |
| 4754 | * the string is truncated. If @a __p is beyond end of string, |
| 4755 | * out_of_range is thrown. The value of the string doesn't |
| 4756 | * change if an error is thrown. |
| 4757 | */ |
| 4758 | basic_string& |
| 4759 | erase(size_type __pos = 0, size_type __n = npos) |
| 4760 | { |
| 4761 | _M_mutate(_M_check(__pos, "basic_string::erase"), |
| 4762 | _M_limit(__pos, __n), size_type(0)); |
| 4763 | return *this; |
| 4764 | } |
| 4765 | |
| 4766 | /** |
| 4767 | * @brief Remove one character. |
| 4768 | * @param __position Iterator referencing the character to remove. |
| 4769 | * @return iterator referencing same location after removal. |
| 4770 | * |
| 4771 | * Removes the character at @a __position from this string. The value |
| 4772 | * of the string doesn't change if an error is thrown. |
| 4773 | */ |
| 4774 | iterator |
| 4775 | erase(iterator __position) |
| 4776 | { |
| 4777 | _GLIBCXX_DEBUG_PEDASSERT(__position >= _M_ibegin() |
| 4778 | && __position < _M_iend()); |
| 4779 | const size_type __pos = __position - _M_ibegin(); |
| 4780 | _M_mutate(__pos, size_type(1), size_type(0)); |
| 4781 | _M_rep()->_M_set_leaked(); |
| 4782 | return iterator(_M_data() + __pos); |
| 4783 | } |
| 4784 | |
| 4785 | /** |
| 4786 | * @brief Remove a range of characters. |
| 4787 | * @param __first Iterator referencing the first character to remove. |
| 4788 | * @param __last Iterator referencing the end of the range. |
| 4789 | * @return Iterator referencing location of first after removal. |
| 4790 | * |
| 4791 | * Removes the characters in the range [first,last) from this string. |
| 4792 | * The value of the string doesn't change if an error is thrown. |
| 4793 | */ |
| 4794 | iterator |
| 4795 | erase(iterator __first, iterator __last); |
| 4796 | |
| 4797 | #if __cplusplus >= 201103L |
| 4798 | /** |
| 4799 | * @brief Remove the last character. |
| 4800 | * |
| 4801 | * The string must be non-empty. |
| 4802 | */ |
| 4803 | void |
| 4804 | pop_back() // FIXME C++11: should be noexcept. |
| 4805 | { |
| 4806 | __glibcxx_assert(!empty()); |
| 4807 | erase(size() - 1, 1); |
| 4808 | } |
| 4809 | #endif // C++11 |
| 4810 | |
| 4811 | /** |
| 4812 | * @brief Replace characters with value from another string. |
| 4813 | * @param __pos Index of first character to replace. |
| 4814 | * @param __n Number of characters to be replaced. |
| 4815 | * @param __str String to insert. |
| 4816 | * @return Reference to this string. |
| 4817 | * @throw std::out_of_range If @a pos is beyond the end of this |
| 4818 | * string. |
| 4819 | * @throw std::length_error If new length exceeds @c max_size(). |
| 4820 | * |
| 4821 | * Removes the characters in the range [__pos,__pos+__n) from |
| 4822 | * this string. In place, the value of @a __str is inserted. |
| 4823 | * If @a __pos is beyond end of string, out_of_range is thrown. |
| 4824 | * If the length of the result exceeds max_size(), length_error |
| 4825 | * is thrown. The value of the string doesn't change if an |
| 4826 | * error is thrown. |
| 4827 | */ |
| 4828 | basic_string& |
| 4829 | replace(size_type __pos, size_type __n, const basic_string& __str) |
| 4830 | { return this->replace(__pos, __n, __str._M_data(), __str.size()); } |
| 4831 | |
| 4832 | /** |
| 4833 | * @brief Replace characters with value from another string. |
| 4834 | * @param __pos1 Index of first character to replace. |
| 4835 | * @param __n1 Number of characters to be replaced. |
| 4836 | * @param __str String to insert. |
| 4837 | * @param __pos2 Index of first character of str to use. |
| 4838 | * @param __n2 Number of characters from str to use. |
| 4839 | * @return Reference to this string. |
| 4840 | * @throw std::out_of_range If @a __pos1 > size() or @a __pos2 > |
| 4841 | * __str.size(). |
| 4842 | * @throw std::length_error If new length exceeds @c max_size(). |
| 4843 | * |
| 4844 | * Removes the characters in the range [__pos1,__pos1 + n) from this |
| 4845 | * string. In place, the value of @a __str is inserted. If @a __pos is |
| 4846 | * beyond end of string, out_of_range is thrown. If the length of the |
| 4847 | * result exceeds max_size(), length_error is thrown. The value of the |
| 4848 | * string doesn't change if an error is thrown. |
| 4849 | */ |
| 4850 | basic_string& |
| 4851 | replace(size_type __pos1, size_type __n1, const basic_string& __str, |
| 4852 | size_type __pos2, size_type __n2 = npos) |
| 4853 | { return this->replace(__pos1, __n1, __str._M_data() |
| 4854 | + __str._M_check(__pos2, "basic_string::replace"), |
| 4855 | __str._M_limit(__pos2, __n2)); } |
| 4856 | |
| 4857 | /** |
| 4858 | * @brief Replace characters with value of a C substring. |
| 4859 | * @param __pos Index of first character to replace. |
| 4860 | * @param __n1 Number of characters to be replaced. |
| 4861 | * @param __s C string to insert. |
| 4862 | * @param __n2 Number of characters from @a s to use. |
| 4863 | * @return Reference to this string. |
| 4864 | * @throw std::out_of_range If @a pos1 > size(). |
| 4865 | * @throw std::length_error If new length exceeds @c max_size(). |
| 4866 | * |
| 4867 | * Removes the characters in the range [__pos,__pos + __n1) |
| 4868 | * from this string. In place, the first @a __n2 characters of |
| 4869 | * @a __s are inserted, or all of @a __s if @a __n2 is too large. If |
| 4870 | * @a __pos is beyond end of string, out_of_range is thrown. If |
| 4871 | * the length of result exceeds max_size(), length_error is |
| 4872 | * thrown. The value of the string doesn't change if an error |
| 4873 | * is thrown. |
| 4874 | */ |
| 4875 | basic_string& |
| 4876 | replace(size_type __pos, size_type __n1, const _CharT* __s, |
| 4877 | size_type __n2); |
| 4878 | |
| 4879 | /** |
| 4880 | * @brief Replace characters with value of a C string. |
| 4881 | * @param __pos Index of first character to replace. |
| 4882 | * @param __n1 Number of characters to be replaced. |
| 4883 | * @param __s C string to insert. |
| 4884 | * @return Reference to this string. |
| 4885 | * @throw std::out_of_range If @a pos > size(). |
| 4886 | * @throw std::length_error If new length exceeds @c max_size(). |
| 4887 | * |
| 4888 | * Removes the characters in the range [__pos,__pos + __n1) |
| 4889 | * from this string. In place, the characters of @a __s are |
| 4890 | * inserted. If @a __pos is beyond end of string, out_of_range |
| 4891 | * is thrown. If the length of result exceeds max_size(), |
| 4892 | * length_error is thrown. The value of the string doesn't |
| 4893 | * change if an error is thrown. |
| 4894 | */ |
| 4895 | basic_string& |
| 4896 | replace(size_type __pos, size_type __n1, const _CharT* __s) |
| 4897 | { |
| 4898 | __glibcxx_requires_string(__s); |
| 4899 | return this->replace(__pos, __n1, __s, traits_type::length(__s)); |
| 4900 | } |
| 4901 | |
| 4902 | /** |
| 4903 | * @brief Replace characters with multiple characters. |
| 4904 | * @param __pos Index of first character to replace. |
| 4905 | * @param __n1 Number of characters to be replaced. |
| 4906 | * @param __n2 Number of characters to insert. |
| 4907 | * @param __c Character to insert. |
| 4908 | * @return Reference to this string. |
| 4909 | * @throw std::out_of_range If @a __pos > size(). |
| 4910 | * @throw std::length_error If new length exceeds @c max_size(). |
| 4911 | * |
| 4912 | * Removes the characters in the range [pos,pos + n1) from this |
| 4913 | * string. In place, @a __n2 copies of @a __c are inserted. |
| 4914 | * If @a __pos is beyond end of string, out_of_range is thrown. |
| 4915 | * If the length of result exceeds max_size(), length_error is |
| 4916 | * thrown. The value of the string doesn't change if an error |
| 4917 | * is thrown. |
| 4918 | */ |
| 4919 | basic_string& |
| 4920 | replace(size_type __pos, size_type __n1, size_type __n2, _CharT __c) |
| 4921 | { return _M_replace_aux(_M_check(__pos, "basic_string::replace"), |
| 4922 | _M_limit(__pos, __n1), __n2, __c); } |
| 4923 | |
| 4924 | /** |
| 4925 | * @brief Replace range of characters with string. |
| 4926 | * @param __i1 Iterator referencing start of range to replace. |
| 4927 | * @param __i2 Iterator referencing end of range to replace. |
| 4928 | * @param __str String value to insert. |
| 4929 | * @return Reference to this string. |
| 4930 | * @throw std::length_error If new length exceeds @c max_size(). |
| 4931 | * |
| 4932 | * Removes the characters in the range [__i1,__i2). In place, |
| 4933 | * the value of @a __str is inserted. If the length of result |
| 4934 | * exceeds max_size(), length_error is thrown. The value of |
| 4935 | * the string doesn't change if an error is thrown. |
| 4936 | */ |
| 4937 | basic_string& |
| 4938 | replace(iterator __i1, iterator __i2, const basic_string& __str) |
| 4939 | { return this->replace(__i1, __i2, __str._M_data(), __str.size()); } |
| 4940 | |
| 4941 | /** |
| 4942 | * @brief Replace range of characters with C substring. |
| 4943 | * @param __i1 Iterator referencing start of range to replace. |
| 4944 | * @param __i2 Iterator referencing end of range to replace. |
| 4945 | * @param __s C string value to insert. |
| 4946 | * @param __n Number of characters from s to insert. |
| 4947 | * @return Reference to this string. |
| 4948 | * @throw std::length_error If new length exceeds @c max_size(). |
| 4949 | * |
| 4950 | * Removes the characters in the range [__i1,__i2). In place, |
| 4951 | * the first @a __n characters of @a __s are inserted. If the |
| 4952 | * length of result exceeds max_size(), length_error is thrown. |
| 4953 | * The value of the string doesn't change if an error is |
| 4954 | * thrown. |
| 4955 | */ |
| 4956 | basic_string& |
| 4957 | replace(iterator __i1, iterator __i2, const _CharT* __s, size_type __n) |
| 4958 | { |
| 4959 | _GLIBCXX_DEBUG_PEDASSERT(_M_ibegin() <= __i1 && __i1 <= __i2 |
| 4960 | && __i2 <= _M_iend()); |
| 4961 | return this->replace(__i1 - _M_ibegin(), __i2 - __i1, __s, __n); |
| 4962 | } |
| 4963 | |
| 4964 | /** |
| 4965 | * @brief Replace range of characters with C string. |
| 4966 | * @param __i1 Iterator referencing start of range to replace. |
| 4967 | * @param __i2 Iterator referencing end of range to replace. |
| 4968 | * @param __s C string value to insert. |
| 4969 | * @return Reference to this string. |
| 4970 | * @throw std::length_error If new length exceeds @c max_size(). |
| 4971 | * |
| 4972 | * Removes the characters in the range [__i1,__i2). In place, |
| 4973 | * the characters of @a __s are inserted. If the length of |
| 4974 | * result exceeds max_size(), length_error is thrown. The |
| 4975 | * value of the string doesn't change if an error is thrown. |
| 4976 | */ |
| 4977 | basic_string& |
| 4978 | replace(iterator __i1, iterator __i2, const _CharT* __s) |
| 4979 | { |
| 4980 | __glibcxx_requires_string(__s); |
| 4981 | return this->replace(__i1, __i2, __s, traits_type::length(__s)); |
| 4982 | } |
| 4983 | |
| 4984 | /** |
| 4985 | * @brief Replace range of characters with multiple characters |
| 4986 | * @param __i1 Iterator referencing start of range to replace. |
| 4987 | * @param __i2 Iterator referencing end of range to replace. |
| 4988 | * @param __n Number of characters to insert. |
| 4989 | * @param __c Character to insert. |
| 4990 | * @return Reference to this string. |
| 4991 | * @throw std::length_error If new length exceeds @c max_size(). |
| 4992 | * |
| 4993 | * Removes the characters in the range [__i1,__i2). In place, |
| 4994 | * @a __n copies of @a __c are inserted. If the length of |
| 4995 | * result exceeds max_size(), length_error is thrown. The |
| 4996 | * value of the string doesn't change if an error is thrown. |
| 4997 | */ |
| 4998 | basic_string& |
| 4999 | replace(iterator __i1, iterator __i2, size_type __n, _CharT __c) |
| 5000 | { |
| 5001 | _GLIBCXX_DEBUG_PEDASSERT(_M_ibegin() <= __i1 && __i1 <= __i2 |
| 5002 | && __i2 <= _M_iend()); |
| 5003 | return _M_replace_aux(__i1 - _M_ibegin(), __i2 - __i1, __n, __c); |
| 5004 | } |
| 5005 | |
| 5006 | /** |
| 5007 | * @brief Replace range of characters with range. |
| 5008 | * @param __i1 Iterator referencing start of range to replace. |
| 5009 | * @param __i2 Iterator referencing end of range to replace. |
| 5010 | * @param __k1 Iterator referencing start of range to insert. |
| 5011 | * @param __k2 Iterator referencing end of range to insert. |
| 5012 | * @return Reference to this string. |
| 5013 | * @throw std::length_error If new length exceeds @c max_size(). |
| 5014 | * |
| 5015 | * Removes the characters in the range [__i1,__i2). In place, |
| 5016 | * characters in the range [__k1,__k2) are inserted. If the |
| 5017 | * length of result exceeds max_size(), length_error is thrown. |
| 5018 | * The value of the string doesn't change if an error is |
| 5019 | * thrown. |
| 5020 | */ |
| 5021 | template<class _InputIterator> |
| 5022 | basic_string& |
| 5023 | replace(iterator __i1, iterator __i2, |
| 5024 | _InputIterator __k1, _InputIterator __k2) |
| 5025 | { |
| 5026 | _GLIBCXX_DEBUG_PEDASSERT(_M_ibegin() <= __i1 && __i1 <= __i2 |
| 5027 | && __i2 <= _M_iend()); |
| 5028 | __glibcxx_requires_valid_range(__k1, __k2); |
| 5029 | typedef typename std::__is_integer<_InputIterator>::__type _Integral; |
| 5030 | return _M_replace_dispatch(__i1, __i2, __k1, __k2, _Integral()); |
| 5031 | } |
| 5032 | |
| 5033 | // Specializations for the common case of pointer and iterator: |
| 5034 | // useful to avoid the overhead of temporary buffering in _M_replace. |
| 5035 | basic_string& |
| 5036 | replace(iterator __i1, iterator __i2, _CharT* __k1, _CharT* __k2) |
| 5037 | { |
| 5038 | _GLIBCXX_DEBUG_PEDASSERT(_M_ibegin() <= __i1 && __i1 <= __i2 |
| 5039 | && __i2 <= _M_iend()); |
| 5040 | __glibcxx_requires_valid_range(__k1, __k2); |
| 5041 | return this->replace(__i1 - _M_ibegin(), __i2 - __i1, |
| 5042 | __k1, __k2 - __k1); |
| 5043 | } |
| 5044 | |
| 5045 | basic_string& |
| 5046 | replace(iterator __i1, iterator __i2, |
| 5047 | const _CharT* __k1, const _CharT* __k2) |
| 5048 | { |
| 5049 | _GLIBCXX_DEBUG_PEDASSERT(_M_ibegin() <= __i1 && __i1 <= __i2 |
| 5050 | && __i2 <= _M_iend()); |
| 5051 | __glibcxx_requires_valid_range(__k1, __k2); |
| 5052 | return this->replace(__i1 - _M_ibegin(), __i2 - __i1, |
| 5053 | __k1, __k2 - __k1); |
| 5054 | } |
| 5055 | |
| 5056 | basic_string& |
| 5057 | replace(iterator __i1, iterator __i2, iterator __k1, iterator __k2) |
| 5058 | { |
| 5059 | _GLIBCXX_DEBUG_PEDASSERT(_M_ibegin() <= __i1 && __i1 <= __i2 |
| 5060 | && __i2 <= _M_iend()); |
| 5061 | __glibcxx_requires_valid_range(__k1, __k2); |
| 5062 | return this->replace(__i1 - _M_ibegin(), __i2 - __i1, |
| 5063 | __k1.base(), __k2 - __k1); |
| 5064 | } |
| 5065 | |
| 5066 | basic_string& |
| 5067 | replace(iterator __i1, iterator __i2, |
| 5068 | const_iterator __k1, const_iterator __k2) |
| 5069 | { |
| 5070 | _GLIBCXX_DEBUG_PEDASSERT(_M_ibegin() <= __i1 && __i1 <= __i2 |
| 5071 | && __i2 <= _M_iend()); |
| 5072 | __glibcxx_requires_valid_range(__k1, __k2); |
| 5073 | return this->replace(__i1 - _M_ibegin(), __i2 - __i1, |
| 5074 | __k1.base(), __k2 - __k1); |
| 5075 | } |
| 5076 | |
| 5077 | #if __cplusplus >= 201103L |
| 5078 | /** |
| 5079 | * @brief Replace range of characters with initializer_list. |
| 5080 | * @param __i1 Iterator referencing start of range to replace. |
| 5081 | * @param __i2 Iterator referencing end of range to replace. |
| 5082 | * @param __l The initializer_list of characters to insert. |
| 5083 | * @return Reference to this string. |
| 5084 | * @throw std::length_error If new length exceeds @c max_size(). |
| 5085 | * |
| 5086 | * Removes the characters in the range [__i1,__i2). In place, |
| 5087 | * characters in the range [__k1,__k2) are inserted. If the |
| 5088 | * length of result exceeds max_size(), length_error is thrown. |
| 5089 | * The value of the string doesn't change if an error is |
| 5090 | * thrown. |
| 5091 | */ |
| 5092 | basic_string& replace(iterator __i1, iterator __i2, |
| 5093 | initializer_list<_CharT> __l) |
| 5094 | { return this->replace(__i1, __i2, __l.begin(), __l.end()); } |
| 5095 | #endif // C++11 |
| 5096 | |
| 5097 | #if __cplusplus >= 201703L |
| 5098 | /** |
| 5099 | * @brief Replace range of characters with string_view. |
| 5100 | * @param __pos The position to replace at. |
| 5101 | * @param __n The number of characters to replace. |
| 5102 | * @param __svt The object convertible to string_view to insert. |
| 5103 | * @return Reference to this string. |
| 5104 | */ |
| 5105 | template<typename _Tp> |
| 5106 | _If_sv<_Tp, basic_string&> |
| 5107 | replace(size_type __pos, size_type __n, const _Tp& __svt) |
| 5108 | { |
| 5109 | __sv_type __sv = __svt; |
| 5110 | return this->replace(__pos, __n, __sv.data(), __sv.size()); |
| 5111 | } |
| 5112 | |
| 5113 | /** |
| 5114 | * @brief Replace range of characters with string_view. |
| 5115 | * @param __pos1 The position to replace at. |
| 5116 | * @param __n1 The number of characters to replace. |
| 5117 | * @param __svt The object convertible to string_view to insert from. |
| 5118 | * @param __pos2 The position in the string_view to insert from. |
| 5119 | * @param __n2 The number of characters to insert. |
| 5120 | * @return Reference to this string. |
| 5121 | */ |
| 5122 | template<typename _Tp> |
| 5123 | _If_sv<_Tp, basic_string&> |
| 5124 | replace(size_type __pos1, size_type __n1, const _Tp& __svt, |
| 5125 | size_type __pos2, size_type __n2 = npos) |
| 5126 | { |
| 5127 | __sv_type __sv = __svt; |
| 5128 | return this->replace(__pos1, __n1, |
| 5129 | __sv.data() |
| 5130 | + std::__sv_check(__sv.size(), __pos2, "basic_string::replace"), |
| 5131 | std::__sv_limit(__sv.size(), __pos2, __n2)); |
| 5132 | } |
| 5133 | |
| 5134 | /** |
| 5135 | * @brief Replace range of characters with string_view. |
| 5136 | * @param __i1 An iterator referencing the start position |
| 5137 | to replace at. |
| 5138 | * @param __i2 An iterator referencing the end position |
| 5139 | for the replace. |
| 5140 | * @param __svt The object convertible to string_view to insert from. |
| 5141 | * @return Reference to this string. |
| 5142 | */ |
| 5143 | template<typename _Tp> |
| 5144 | _If_sv<_Tp, basic_string&> |
| 5145 | replace(const_iterator __i1, const_iterator __i2, const _Tp& __svt) |
| 5146 | { |
| 5147 | __sv_type __sv = __svt; |
| 5148 | return this->replace(__i1 - begin(), __i2 - __i1, __sv); |
| 5149 | } |
| 5150 | #endif // C++17 |
| 5151 | |
| 5152 | private: |
| 5153 | template<class _Integer> |
| 5154 | basic_string& |
| 5155 | _M_replace_dispatch(iterator __i1, iterator __i2, _Integer __n, |
| 5156 | _Integer __val, __true_type) |
| 5157 | { return _M_replace_aux(__i1 - _M_ibegin(), __i2 - __i1, __n, __val); } |
| 5158 | |
| 5159 | template<class _InputIterator> |
| 5160 | basic_string& |
| 5161 | _M_replace_dispatch(iterator __i1, iterator __i2, _InputIterator __k1, |
| 5162 | _InputIterator __k2, __false_type); |
| 5163 | |
| 5164 | basic_string& |
| 5165 | _M_replace_aux(size_type __pos1, size_type __n1, size_type __n2, |
| 5166 | _CharT __c); |
| 5167 | |
| 5168 | basic_string& |
| 5169 | _M_replace_safe(size_type __pos1, size_type __n1, const _CharT* __s, |
| 5170 | size_type __n2); |
| 5171 | |
| 5172 | // _S_construct_aux is used to implement the 21.3.1 para 15 which |
| 5173 | // requires special behaviour if _InIter is an integral type |
| 5174 | template<class _InIterator> |
| 5175 | static _CharT* |
| 5176 | _S_construct_aux(_InIterator __beg, _InIterator __end, |
| 5177 | const _Alloc& __a, __false_type) |
| 5178 | { |
| 5179 | typedef typename iterator_traits<_InIterator>::iterator_category _Tag; |
| 5180 | return _S_construct(__beg, __end, __a, _Tag()); |
| 5181 | } |
| 5182 | |
| 5183 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
| 5184 | // 438. Ambiguity in the "do the right thing" clause |
| 5185 | template<class _Integer> |
| 5186 | static _CharT* |
| 5187 | _S_construct_aux(_Integer __beg, _Integer __end, |
| 5188 | const _Alloc& __a, __true_type) |
| 5189 | { return _S_construct_aux_2(static_cast<size_type>(__beg), |
| 5190 | __end, __a); } |
| 5191 | |
| 5192 | static _CharT* |
| 5193 | _S_construct_aux_2(size_type __req, _CharT __c, const _Alloc& __a) |
| 5194 | { return _S_construct(__req, __c, __a); } |
| 5195 | |
| 5196 | template<class _InIterator> |
| 5197 | static _CharT* |
| 5198 | _S_construct(_InIterator __beg, _InIterator __end, const _Alloc& __a) |
| 5199 | { |
| 5200 | typedef typename std::__is_integer<_InIterator>::__type _Integral; |
| 5201 | return _S_construct_aux(__beg, __end, __a, _Integral()); |
| 5202 | } |
| 5203 | |
| 5204 | // For Input Iterators, used in istreambuf_iterators, etc. |
| 5205 | template<class _InIterator> |
| 5206 | static _CharT* |
| 5207 | _S_construct(_InIterator __beg, _InIterator __end, const _Alloc& __a, |
| 5208 | input_iterator_tag); |
| 5209 | |
| 5210 | // For forward_iterators up to random_access_iterators, used for |
| 5211 | // string::iterator, _CharT*, etc. |
| 5212 | template<class _FwdIterator> |
| 5213 | static _CharT* |
| 5214 | _S_construct(_FwdIterator __beg, _FwdIterator __end, const _Alloc& __a, |
| 5215 | forward_iterator_tag); |
| 5216 | |
| 5217 | static _CharT* |
| 5218 | _S_construct(size_type __req, _CharT __c, const _Alloc& __a); |
| 5219 | |
| 5220 | public: |
| 5221 | |
| 5222 | /** |
| 5223 | * @brief Copy substring into C string. |
| 5224 | * @param __s C string to copy value into. |
| 5225 | * @param __n Number of characters to copy. |
| 5226 | * @param __pos Index of first character to copy. |
| 5227 | * @return Number of characters actually copied |
| 5228 | * @throw std::out_of_range If __pos > size(). |
| 5229 | * |
| 5230 | * Copies up to @a __n characters starting at @a __pos into the |
| 5231 | * C string @a __s. If @a __pos is %greater than size(), |
| 5232 | * out_of_range is thrown. |
| 5233 | */ |
| 5234 | size_type |
| 5235 | copy(_CharT* __s, size_type __n, size_type __pos = 0) const; |
| 5236 | |
| 5237 | /** |
| 5238 | * @brief Swap contents with another string. |
| 5239 | * @param __s String to swap with. |
| 5240 | * |
| 5241 | * Exchanges the contents of this string with that of @a __s in constant |
| 5242 | * time. |
| 5243 | */ |
| 5244 | void |
| 5245 | swap(basic_string& __s) |
| 5246 | _GLIBCXX_NOEXCEPT_IF(allocator_traits<_Alloc>::is_always_equal::value); |
| 5247 | |
| 5248 | // String operations: |
| 5249 | /** |
| 5250 | * @brief Return const pointer to null-terminated contents. |
| 5251 | * |
| 5252 | * This is a handle to internal data. Do not modify or dire things may |
| 5253 | * happen. |
| 5254 | */ |
| 5255 | const _CharT* |
| 5256 | c_str() const _GLIBCXX_NOEXCEPT |
| 5257 | { return _M_data(); } |
| 5258 | |
| 5259 | /** |
| 5260 | * @brief Return const pointer to contents. |
| 5261 | * |
| 5262 | * This is a pointer to internal data. It is undefined to modify |
| 5263 | * the contents through the returned pointer. To get a pointer that |
| 5264 | * allows modifying the contents use @c &str[0] instead, |
| 5265 | * (or in C++17 the non-const @c str.data() overload). |
| 5266 | */ |
| 5267 | const _CharT* |
| 5268 | data() const _GLIBCXX_NOEXCEPT |
| 5269 | { return _M_data(); } |
| 5270 | |
| 5271 | #if __cplusplus >= 201703L |
| 5272 | /** |
| 5273 | * @brief Return non-const pointer to contents. |
| 5274 | * |
| 5275 | * This is a pointer to the character sequence held by the string. |
| 5276 | * Modifying the characters in the sequence is allowed. |
| 5277 | */ |
| 5278 | _CharT* |
| 5279 | data() noexcept |
| 5280 | { |
| 5281 | _M_leak(); |
| 5282 | return _M_data(); |
| 5283 | } |
| 5284 | #endif |
| 5285 | |
| 5286 | /** |
| 5287 | * @brief Return copy of allocator used to construct this string. |
| 5288 | */ |
| 5289 | allocator_type |
| 5290 | get_allocator() const _GLIBCXX_NOEXCEPT |
| 5291 | { return _M_dataplus; } |
| 5292 | |
| 5293 | /** |
| 5294 | * @brief Find position of a C substring. |
| 5295 | * @param __s C string to locate. |
| 5296 | * @param __pos Index of character to search from. |
| 5297 | * @param __n Number of characters from @a s to search for. |
| 5298 | * @return Index of start of first occurrence. |
| 5299 | * |
| 5300 | * Starting from @a __pos, searches forward for the first @a |
| 5301 | * __n characters in @a __s within this string. If found, |
| 5302 | * returns the index where it begins. If not found, returns |
| 5303 | * npos. |
| 5304 | */ |
| 5305 | size_type |
| 5306 | find(const _CharT* __s, size_type __pos, size_type __n) const |
| 5307 | _GLIBCXX_NOEXCEPT; |
| 5308 | |
| 5309 | /** |
| 5310 | * @brief Find position of a string. |
| 5311 | * @param __str String to locate. |
| 5312 | * @param __pos Index of character to search from (default 0). |
| 5313 | * @return Index of start of first occurrence. |
| 5314 | * |
| 5315 | * Starting from @a __pos, searches forward for value of @a __str within |
| 5316 | * this string. If found, returns the index where it begins. If not |
| 5317 | * found, returns npos. |
| 5318 | */ |
| 5319 | size_type |
| 5320 | find(const basic_string& __str, size_type __pos = 0) const |
| 5321 | _GLIBCXX_NOEXCEPT |
| 5322 | { return this->find(__str.data(), __pos, __str.size()); } |
| 5323 | |
| 5324 | /** |
| 5325 | * @brief Find position of a C string. |
| 5326 | * @param __s C string to locate. |
| 5327 | * @param __pos Index of character to search from (default 0). |
| 5328 | * @return Index of start of first occurrence. |
| 5329 | * |
| 5330 | * Starting from @a __pos, searches forward for the value of @a |
| 5331 | * __s within this string. If found, returns the index where |
| 5332 | * it begins. If not found, returns npos. |
| 5333 | */ |
| 5334 | size_type |
| 5335 | find(const _CharT* __s, size_type __pos = 0) const _GLIBCXX_NOEXCEPT |
| 5336 | { |
| 5337 | __glibcxx_requires_string(__s); |
| 5338 | return this->find(__s, __pos, traits_type::length(__s)); |
| 5339 | } |
| 5340 | |
| 5341 | /** |
| 5342 | * @brief Find position of a character. |
| 5343 | * @param __c Character to locate. |
| 5344 | * @param __pos Index of character to search from (default 0). |
| 5345 | * @return Index of first occurrence. |
| 5346 | * |
| 5347 | * Starting from @a __pos, searches forward for @a __c within |
| 5348 | * this string. If found, returns the index where it was |
| 5349 | * found. If not found, returns npos. |
| 5350 | */ |
| 5351 | size_type |
| 5352 | find(_CharT __c, size_type __pos = 0) const _GLIBCXX_NOEXCEPT; |
| 5353 | |
| 5354 | #if __cplusplus >= 201703L |
| 5355 | /** |
| 5356 | * @brief Find position of a string_view. |
| 5357 | * @param __svt The object convertible to string_view to locate. |
| 5358 | * @param __pos Index of character to search from (default 0). |
| 5359 | * @return Index of start of first occurrence. |
| 5360 | */ |
| 5361 | template<typename _Tp> |
| 5362 | _If_sv<_Tp, size_type> |
| 5363 | find(const _Tp& __svt, size_type __pos = 0) const |
| 5364 | noexcept(is_same<_Tp, __sv_type>::value) |
| 5365 | { |
| 5366 | __sv_type __sv = __svt; |
| 5367 | return this->find(__sv.data(), __pos, __sv.size()); |
| 5368 | } |
| 5369 | #endif // C++17 |
| 5370 | |
| 5371 | /** |
| 5372 | * @brief Find last position of a string. |
| 5373 | * @param __str String to locate. |
| 5374 | * @param __pos Index of character to search back from (default end). |
| 5375 | * @return Index of start of last occurrence. |
| 5376 | * |
| 5377 | * Starting from @a __pos, searches backward for value of @a |
| 5378 | * __str within this string. If found, returns the index where |
| 5379 | * it begins. If not found, returns npos. |
| 5380 | */ |
| 5381 | size_type |
| 5382 | rfind(const basic_string& __str, size_type __pos = npos) const |
| 5383 | _GLIBCXX_NOEXCEPT |
| 5384 | { return this->rfind(__str.data(), __pos, __str.size()); } |
| 5385 | |
| 5386 | /** |
| 5387 | * @brief Find last position of a C substring. |
| 5388 | * @param __s C string to locate. |
| 5389 | * @param __pos Index of character to search back from. |
| 5390 | * @param __n Number of characters from s to search for. |
| 5391 | * @return Index of start of last occurrence. |
| 5392 | * |
| 5393 | * Starting from @a __pos, searches backward for the first @a |
| 5394 | * __n characters in @a __s within this string. If found, |
| 5395 | * returns the index where it begins. If not found, returns |
| 5396 | * npos. |
| 5397 | */ |
| 5398 | size_type |
| 5399 | rfind(const _CharT* __s, size_type __pos, size_type __n) const |
| 5400 | _GLIBCXX_NOEXCEPT; |
| 5401 | |
| 5402 | /** |
| 5403 | * @brief Find last position of a C string. |
| 5404 | * @param __s C string to locate. |
| 5405 | * @param __pos Index of character to start search at (default end). |
| 5406 | * @return Index of start of last occurrence. |
| 5407 | * |
| 5408 | * Starting from @a __pos, searches backward for the value of |
| 5409 | * @a __s within this string. If found, returns the index |
| 5410 | * where it begins. If not found, returns npos. |
| 5411 | */ |
| 5412 | size_type |
| 5413 | rfind(const _CharT* __s, size_type __pos = npos) const _GLIBCXX_NOEXCEPT |
| 5414 | { |
| 5415 | __glibcxx_requires_string(__s); |
| 5416 | return this->rfind(__s, __pos, traits_type::length(__s)); |
| 5417 | } |
| 5418 | |
| 5419 | /** |
| 5420 | * @brief Find last position of a character. |
| 5421 | * @param __c Character to locate. |
| 5422 | * @param __pos Index of character to search back from (default end). |
| 5423 | * @return Index of last occurrence. |
| 5424 | * |
| 5425 | * Starting from @a __pos, searches backward for @a __c within |
| 5426 | * this string. If found, returns the index where it was |
| 5427 | * found. If not found, returns npos. |
| 5428 | */ |
| 5429 | size_type |
| 5430 | rfind(_CharT __c, size_type __pos = npos) const _GLIBCXX_NOEXCEPT; |
| 5431 | |
| 5432 | #if __cplusplus >= 201703L |
| 5433 | /** |
| 5434 | * @brief Find last position of a string_view. |
| 5435 | * @param __svt The object convertible to string_view to locate. |
| 5436 | * @param __pos Index of character to search back from (default end). |
| 5437 | * @return Index of start of last occurrence. |
| 5438 | */ |
| 5439 | template<typename _Tp> |
| 5440 | _If_sv<_Tp, size_type> |
| 5441 | rfind(const _Tp& __svt, size_type __pos = npos) const |
| 5442 | noexcept(is_same<_Tp, __sv_type>::value) |
| 5443 | { |
| 5444 | __sv_type __sv = __svt; |
| 5445 | return this->rfind(__sv.data(), __pos, __sv.size()); |
| 5446 | } |
| 5447 | #endif // C++17 |
| 5448 | |
| 5449 | /** |
| 5450 | * @brief Find position of a character of string. |
| 5451 | * @param __str String containing characters to locate. |
| 5452 | * @param __pos Index of character to search from (default 0). |
| 5453 | * @return Index of first occurrence. |
| 5454 | * |
| 5455 | * Starting from @a __pos, searches forward for one of the |
| 5456 | * characters of @a __str within this string. If found, |
| 5457 | * returns the index where it was found. If not found, returns |
| 5458 | * npos. |
| 5459 | */ |
| 5460 | size_type |
| 5461 | find_first_of(const basic_string& __str, size_type __pos = 0) const |
| 5462 | _GLIBCXX_NOEXCEPT |
| 5463 | { return this->find_first_of(__str.data(), __pos, __str.size()); } |
| 5464 | |
| 5465 | /** |
| 5466 | * @brief Find position of a character of C substring. |
| 5467 | * @param __s String containing characters to locate. |
| 5468 | * @param __pos Index of character to search from. |
| 5469 | * @param __n Number of characters from s to search for. |
| 5470 | * @return Index of first occurrence. |
| 5471 | * |
| 5472 | * Starting from @a __pos, searches forward for one of the |
| 5473 | * first @a __n characters of @a __s within this string. If |
| 5474 | * found, returns the index where it was found. If not found, |
| 5475 | * returns npos. |
| 5476 | */ |
| 5477 | size_type |
| 5478 | find_first_of(const _CharT* __s, size_type __pos, size_type __n) const |
| 5479 | _GLIBCXX_NOEXCEPT; |
| 5480 | |
| 5481 | /** |
| 5482 | * @brief Find position of a character of C string. |
| 5483 | * @param __s String containing characters to locate. |
| 5484 | * @param __pos Index of character to search from (default 0). |
| 5485 | * @return Index of first occurrence. |
| 5486 | * |
| 5487 | * Starting from @a __pos, searches forward for one of the |
| 5488 | * characters of @a __s within this string. If found, returns |
| 5489 | * the index where it was found. If not found, returns npos. |
| 5490 | */ |
| 5491 | size_type |
| 5492 | find_first_of(const _CharT* __s, size_type __pos = 0) const |
| 5493 | _GLIBCXX_NOEXCEPT |
| 5494 | { |
| 5495 | __glibcxx_requires_string(__s); |
| 5496 | return this->find_first_of(__s, __pos, traits_type::length(__s)); |
| 5497 | } |
| 5498 | |
| 5499 | /** |
| 5500 | * @brief Find position of a character. |
| 5501 | * @param __c Character to locate. |
| 5502 | * @param __pos Index of character to search from (default 0). |
| 5503 | * @return Index of first occurrence. |
| 5504 | * |
| 5505 | * Starting from @a __pos, searches forward for the character |
| 5506 | * @a __c within this string. If found, returns the index |
| 5507 | * where it was found. If not found, returns npos. |
| 5508 | * |
| 5509 | * Note: equivalent to find(__c, __pos). |
| 5510 | */ |
| 5511 | size_type |
| 5512 | find_first_of(_CharT __c, size_type __pos = 0) const _GLIBCXX_NOEXCEPT |
| 5513 | { return this->find(__c, __pos); } |
| 5514 | |
| 5515 | #if __cplusplus >= 201703L |
| 5516 | /** |
| 5517 | * @brief Find position of a character of a string_view. |
| 5518 | * @param __svt An object convertible to string_view containing |
| 5519 | * characters to locate. |
| 5520 | * @param __pos Index of character to search from (default 0). |
| 5521 | * @return Index of first occurrence. |
| 5522 | */ |
| 5523 | template<typename _Tp> |
| 5524 | _If_sv<_Tp, size_type> |
| 5525 | find_first_of(const _Tp& __svt, size_type __pos = 0) const |
| 5526 | noexcept(is_same<_Tp, __sv_type>::value) |
| 5527 | { |
| 5528 | __sv_type __sv = __svt; |
| 5529 | return this->find_first_of(__sv.data(), __pos, __sv.size()); |
| 5530 | } |
| 5531 | #endif // C++17 |
| 5532 | |
| 5533 | /** |
| 5534 | * @brief Find last position of a character of string. |
| 5535 | * @param __str String containing characters to locate. |
| 5536 | * @param __pos Index of character to search back from (default end). |
| 5537 | * @return Index of last occurrence. |
| 5538 | * |
| 5539 | * Starting from @a __pos, searches backward for one of the |
| 5540 | * characters of @a __str within this string. If found, |
| 5541 | * returns the index where it was found. If not found, returns |
| 5542 | * npos. |
| 5543 | */ |
| 5544 | size_type |
| 5545 | find_last_of(const basic_string& __str, size_type __pos = npos) const |
| 5546 | _GLIBCXX_NOEXCEPT |
| 5547 | { return this->find_last_of(__str.data(), __pos, __str.size()); } |
| 5548 | |
| 5549 | /** |
| 5550 | * @brief Find last position of a character of C substring. |
| 5551 | * @param __s C string containing characters to locate. |
| 5552 | * @param __pos Index of character to search back from. |
| 5553 | * @param __n Number of characters from s to search for. |
| 5554 | * @return Index of last occurrence. |
| 5555 | * |
| 5556 | * Starting from @a __pos, searches backward for one of the |
| 5557 | * first @a __n characters of @a __s within this string. If |
| 5558 | * found, returns the index where it was found. If not found, |
| 5559 | * returns npos. |
| 5560 | */ |
| 5561 | size_type |
| 5562 | find_last_of(const _CharT* __s, size_type __pos, size_type __n) const |
| 5563 | _GLIBCXX_NOEXCEPT; |
| 5564 | |
| 5565 | /** |
| 5566 | * @brief Find last position of a character of C string. |
| 5567 | * @param __s C string containing characters to locate. |
| 5568 | * @param __pos Index of character to search back from (default end). |
| 5569 | * @return Index of last occurrence. |
| 5570 | * |
| 5571 | * Starting from @a __pos, searches backward for one of the |
| 5572 | * characters of @a __s within this string. If found, returns |
| 5573 | * the index where it was found. If not found, returns npos. |
| 5574 | */ |
| 5575 | size_type |
| 5576 | find_last_of(const _CharT* __s, size_type __pos = npos) const |
| 5577 | _GLIBCXX_NOEXCEPT |
| 5578 | { |
| 5579 | __glibcxx_requires_string(__s); |
| 5580 | return this->find_last_of(__s, __pos, traits_type::length(__s)); |
| 5581 | } |
| 5582 | |
| 5583 | /** |
| 5584 | * @brief Find last position of a character. |
| 5585 | * @param __c Character to locate. |
| 5586 | * @param __pos Index of character to search back from (default end). |
| 5587 | * @return Index of last occurrence. |
| 5588 | * |
| 5589 | * Starting from @a __pos, searches backward for @a __c within |
| 5590 | * this string. If found, returns the index where it was |
| 5591 | * found. If not found, returns npos. |
| 5592 | * |
| 5593 | * Note: equivalent to rfind(__c, __pos). |
| 5594 | */ |
| 5595 | size_type |
| 5596 | find_last_of(_CharT __c, size_type __pos = npos) const _GLIBCXX_NOEXCEPT |
| 5597 | { return this->rfind(__c, __pos); } |
| 5598 | |
| 5599 | #if __cplusplus >= 201703L |
| 5600 | /** |
| 5601 | * @brief Find last position of a character of string. |
| 5602 | * @param __svt An object convertible to string_view containing |
| 5603 | * characters to locate. |
| 5604 | * @param __pos Index of character to search back from (default end). |
| 5605 | * @return Index of last occurrence. |
| 5606 | */ |
| 5607 | template<typename _Tp> |
| 5608 | _If_sv<_Tp, size_type> |
| 5609 | find_last_of(const _Tp& __svt, size_type __pos = npos) const |
| 5610 | noexcept(is_same<_Tp, __sv_type>::value) |
| 5611 | { |
| 5612 | __sv_type __sv = __svt; |
| 5613 | return this->find_last_of(__sv.data(), __pos, __sv.size()); |
| 5614 | } |
| 5615 | #endif // C++17 |
| 5616 | |
| 5617 | /** |
| 5618 | * @brief Find position of a character not in string. |
| 5619 | * @param __str String containing characters to avoid. |
| 5620 | * @param __pos Index of character to search from (default 0). |
| 5621 | * @return Index of first occurrence. |
| 5622 | * |
| 5623 | * Starting from @a __pos, searches forward for a character not contained |
| 5624 | * in @a __str within this string. If found, returns the index where it |
| 5625 | * was found. If not found, returns npos. |
| 5626 | */ |
| 5627 | size_type |
| 5628 | find_first_not_of(const basic_string& __str, size_type __pos = 0) const |
| 5629 | _GLIBCXX_NOEXCEPT |
| 5630 | { return this->find_first_not_of(__str.data(), __pos, __str.size()); } |
| 5631 | |
| 5632 | /** |
| 5633 | * @brief Find position of a character not in C substring. |
| 5634 | * @param __s C string containing characters to avoid. |
| 5635 | * @param __pos Index of character to search from. |
| 5636 | * @param __n Number of characters from __s to consider. |
| 5637 | * @return Index of first occurrence. |
| 5638 | * |
| 5639 | * Starting from @a __pos, searches forward for a character not |
| 5640 | * contained in the first @a __n characters of @a __s within |
| 5641 | * this string. If found, returns the index where it was |
| 5642 | * found. If not found, returns npos. |
| 5643 | */ |
| 5644 | size_type |
| 5645 | find_first_not_of(const _CharT* __s, size_type __pos, |
| 5646 | size_type __n) const _GLIBCXX_NOEXCEPT; |
| 5647 | |
| 5648 | /** |
| 5649 | * @brief Find position of a character not in C string. |
| 5650 | * @param __s C string containing characters to avoid. |
| 5651 | * @param __pos Index of character to search from (default 0). |
| 5652 | * @return Index of first occurrence. |
| 5653 | * |
| 5654 | * Starting from @a __pos, searches forward for a character not |
| 5655 | * contained in @a __s within this string. If found, returns |
| 5656 | * the index where it was found. If not found, returns npos. |
| 5657 | */ |
| 5658 | size_type |
| 5659 | find_first_not_of(const _CharT* __s, size_type __pos = 0) const |
| 5660 | _GLIBCXX_NOEXCEPT |
| 5661 | { |
| 5662 | __glibcxx_requires_string(__s); |
| 5663 | return this->find_first_not_of(__s, __pos, traits_type::length(__s)); |
| 5664 | } |
| 5665 | |
| 5666 | /** |
| 5667 | * @brief Find position of a different character. |
| 5668 | * @param __c Character to avoid. |
| 5669 | * @param __pos Index of character to search from (default 0). |
| 5670 | * @return Index of first occurrence. |
| 5671 | * |
| 5672 | * Starting from @a __pos, searches forward for a character |
| 5673 | * other than @a __c within this string. If found, returns the |
| 5674 | * index where it was found. If not found, returns npos. |
| 5675 | */ |
| 5676 | size_type |
| 5677 | find_first_not_of(_CharT __c, size_type __pos = 0) const |
| 5678 | _GLIBCXX_NOEXCEPT; |
| 5679 | |
| 5680 | #if __cplusplus >= 201703L |
| 5681 | /** |
| 5682 | * @brief Find position of a character not in a string_view. |
| 5683 | * @param __svt An object convertible to string_view containing |
| 5684 | * characters to avoid. |
| 5685 | * @param __pos Index of character to search from (default 0). |
| 5686 | * @return Index of first occurrence. |
| 5687 | */ |
| 5688 | template<typename _Tp> |
| 5689 | _If_sv<_Tp, size_type> |
| 5690 | find_first_not_of(const _Tp& __svt, size_type __pos = 0) const |
| 5691 | noexcept(is_same<_Tp, __sv_type>::value) |
| 5692 | { |
| 5693 | __sv_type __sv = __svt; |
| 5694 | return this->find_first_not_of(__sv.data(), __pos, __sv.size()); |
| 5695 | } |
| 5696 | #endif // C++17 |
| 5697 | |
| 5698 | /** |
| 5699 | * @brief Find last position of a character not in string. |
| 5700 | * @param __str String containing characters to avoid. |
| 5701 | * @param __pos Index of character to search back from (default end). |
| 5702 | * @return Index of last occurrence. |
| 5703 | * |
| 5704 | * Starting from @a __pos, searches backward for a character |
| 5705 | * not contained in @a __str within this string. If found, |
| 5706 | * returns the index where it was found. If not found, returns |
| 5707 | * npos. |
| 5708 | */ |
| 5709 | size_type |
| 5710 | find_last_not_of(const basic_string& __str, size_type __pos = npos) const |
| 5711 | _GLIBCXX_NOEXCEPT |
| 5712 | { return this->find_last_not_of(__str.data(), __pos, __str.size()); } |
| 5713 | |
| 5714 | /** |
| 5715 | * @brief Find last position of a character not in C substring. |
| 5716 | * @param __s C string containing characters to avoid. |
| 5717 | * @param __pos Index of character to search back from. |
| 5718 | * @param __n Number of characters from s to consider. |
| 5719 | * @return Index of last occurrence. |
| 5720 | * |
| 5721 | * Starting from @a __pos, searches backward for a character not |
| 5722 | * contained in the first @a __n characters of @a __s within this string. |
| 5723 | * If found, returns the index where it was found. If not found, |
| 5724 | * returns npos. |
| 5725 | */ |
| 5726 | size_type |
| 5727 | find_last_not_of(const _CharT* __s, size_type __pos, |
| 5728 | size_type __n) const _GLIBCXX_NOEXCEPT; |
| 5729 | /** |
| 5730 | * @brief Find last position of a character not in C string. |
| 5731 | * @param __s C string containing characters to avoid. |
| 5732 | * @param __pos Index of character to search back from (default end). |
| 5733 | * @return Index of last occurrence. |
| 5734 | * |
| 5735 | * Starting from @a __pos, searches backward for a character |
| 5736 | * not contained in @a __s within this string. If found, |
| 5737 | * returns the index where it was found. If not found, returns |
| 5738 | * npos. |
| 5739 | */ |
| 5740 | size_type |
| 5741 | find_last_not_of(const _CharT* __s, size_type __pos = npos) const |
| 5742 | _GLIBCXX_NOEXCEPT |
| 5743 | { |
| 5744 | __glibcxx_requires_string(__s); |
| 5745 | return this->find_last_not_of(__s, __pos, traits_type::length(__s)); |
| 5746 | } |
| 5747 | |
| 5748 | /** |
| 5749 | * @brief Find last position of a different character. |
| 5750 | * @param __c Character to avoid. |
| 5751 | * @param __pos Index of character to search back from (default end). |
| 5752 | * @return Index of last occurrence. |
| 5753 | * |
| 5754 | * Starting from @a __pos, searches backward for a character other than |
| 5755 | * @a __c within this string. If found, returns the index where it was |
| 5756 | * found. If not found, returns npos. |
| 5757 | */ |
| 5758 | size_type |
| 5759 | find_last_not_of(_CharT __c, size_type __pos = npos) const |
| 5760 | _GLIBCXX_NOEXCEPT; |
| 5761 | |
| 5762 | #if __cplusplus >= 201703L |
| 5763 | /** |
| 5764 | * @brief Find last position of a character not in a string_view. |
| 5765 | * @param __svt An object convertible to string_view containing |
| 5766 | * characters to avoid. |
| 5767 | * @param __pos Index of character to search back from (default end). |
| 5768 | * @return Index of last occurrence. |
| 5769 | */ |
| 5770 | template<typename _Tp> |
| 5771 | _If_sv<_Tp, size_type> |
| 5772 | find_last_not_of(const _Tp& __svt, size_type __pos = npos) const |
| 5773 | noexcept(is_same<_Tp, __sv_type>::value) |
| 5774 | { |
| 5775 | __sv_type __sv = __svt; |
| 5776 | return this->find_last_not_of(__sv.data(), __pos, __sv.size()); |
| 5777 | } |
| 5778 | #endif // C++17 |
| 5779 | |
| 5780 | /** |
| 5781 | * @brief Get a substring. |
| 5782 | * @param __pos Index of first character (default 0). |
| 5783 | * @param __n Number of characters in substring (default remainder). |
| 5784 | * @return The new string. |
| 5785 | * @throw std::out_of_range If __pos > size(). |
| 5786 | * |
| 5787 | * Construct and return a new string using the @a __n |
| 5788 | * characters starting at @a __pos. If the string is too |
| 5789 | * short, use the remainder of the characters. If @a __pos is |
| 5790 | * beyond the end of the string, out_of_range is thrown. |
| 5791 | */ |
| 5792 | basic_string |
| 5793 | substr(size_type __pos = 0, size_type __n = npos) const |
| 5794 | { return basic_string(*this, |
| 5795 | _M_check(__pos, "basic_string::substr"), __n); } |
| 5796 | |
| 5797 | /** |
| 5798 | * @brief Compare to a string. |
| 5799 | * @param __str String to compare against. |
| 5800 | * @return Integer < 0, 0, or > 0. |
| 5801 | * |
| 5802 | * Returns an integer < 0 if this string is ordered before @a |
| 5803 | * __str, 0 if their values are equivalent, or > 0 if this |
| 5804 | * string is ordered after @a __str. Determines the effective |
| 5805 | * length rlen of the strings to compare as the smallest of |
| 5806 | * size() and str.size(). The function then compares the two |
| 5807 | * strings by calling traits::compare(data(), str.data(),rlen). |
| 5808 | * If the result of the comparison is nonzero returns it, |
| 5809 | * otherwise the shorter one is ordered first. |
| 5810 | */ |
| 5811 | int |
| 5812 | compare(const basic_string& __str) const |
| 5813 | { |
| 5814 | const size_type __size = this->size(); |
| 5815 | const size_type __osize = __str.size(); |
| 5816 | const size_type __len = std::min(__size, __osize); |
| 5817 | |
| 5818 | int __r = traits_type::compare(_M_data(), __str.data(), __len); |
| 5819 | if (!__r) |
| 5820 | __r = _S_compare(__size, __osize); |
| 5821 | return __r; |
| 5822 | } |
| 5823 | |
| 5824 | #if __cplusplus >= 201703L |
| 5825 | /** |
| 5826 | * @brief Compare to a string_view. |
| 5827 | * @param __svt An object convertible to string_view to compare against. |
| 5828 | * @return Integer < 0, 0, or > 0. |
| 5829 | */ |
| 5830 | template<typename _Tp> |
| 5831 | _If_sv<_Tp, int> |
| 5832 | compare(const _Tp& __svt) const |
| 5833 | noexcept(is_same<_Tp, __sv_type>::value) |
| 5834 | { |
| 5835 | __sv_type __sv = __svt; |
| 5836 | const size_type __size = this->size(); |
| 5837 | const size_type __osize = __sv.size(); |
| 5838 | const size_type __len = std::min(__size, __osize); |
| 5839 | |
| 5840 | int __r = traits_type::compare(_M_data(), __sv.data(), __len); |
| 5841 | if (!__r) |
| 5842 | __r = _S_compare(__size, __osize); |
| 5843 | return __r; |
| 5844 | } |
| 5845 | |
| 5846 | /** |
| 5847 | * @brief Compare to a string_view. |
| 5848 | * @param __pos A position in the string to start comparing from. |
| 5849 | * @param __n The number of characters to compare. |
| 5850 | * @param __svt An object convertible to string_view to compare |
| 5851 | * against. |
| 5852 | * @return Integer < 0, 0, or > 0. |
| 5853 | */ |
| 5854 | template<typename _Tp> |
| 5855 | _If_sv<_Tp, int> |
| 5856 | compare(size_type __pos, size_type __n, const _Tp& __svt) const |
| 5857 | noexcept(is_same<_Tp, __sv_type>::value) |
| 5858 | { |
| 5859 | __sv_type __sv = __svt; |
| 5860 | return __sv_type(*this).substr(__pos, __n).compare(__sv); |
| 5861 | } |
| 5862 | |
| 5863 | /** |
| 5864 | * @brief Compare to a string_view. |
| 5865 | * @param __pos1 A position in the string to start comparing from. |
| 5866 | * @param __n1 The number of characters to compare. |
| 5867 | * @param __svt An object convertible to string_view to compare |
| 5868 | * against. |
| 5869 | * @param __pos2 A position in the string_view to start comparing from. |
| 5870 | * @param __n2 The number of characters to compare. |
| 5871 | * @return Integer < 0, 0, or > 0. |
| 5872 | */ |
| 5873 | template<typename _Tp> |
| 5874 | _If_sv<_Tp, int> |
| 5875 | compare(size_type __pos1, size_type __n1, const _Tp& __svt, |
| 5876 | size_type __pos2, size_type __n2 = npos) const |
| 5877 | noexcept(is_same<_Tp, __sv_type>::value) |
| 5878 | { |
| 5879 | __sv_type __sv = __svt; |
| 5880 | return __sv_type(*this) |
| 5881 | .substr(__pos1, __n1).compare(__sv.substr(__pos2, __n2)); |
| 5882 | } |
| 5883 | #endif // C++17 |
| 5884 | |
| 5885 | /** |
| 5886 | * @brief Compare substring to a string. |
| 5887 | * @param __pos Index of first character of substring. |
| 5888 | * @param __n Number of characters in substring. |
| 5889 | * @param __str String to compare against. |
| 5890 | * @return Integer < 0, 0, or > 0. |
| 5891 | * |
| 5892 | * Form the substring of this string from the @a __n characters |
| 5893 | * starting at @a __pos. Returns an integer < 0 if the |
| 5894 | * substring is ordered before @a __str, 0 if their values are |
| 5895 | * equivalent, or > 0 if the substring is ordered after @a |
| 5896 | * __str. Determines the effective length rlen of the strings |
| 5897 | * to compare as the smallest of the length of the substring |
| 5898 | * and @a __str.size(). The function then compares the two |
| 5899 | * strings by calling |
| 5900 | * traits::compare(substring.data(),str.data(),rlen). If the |
| 5901 | * result of the comparison is nonzero returns it, otherwise |
| 5902 | * the shorter one is ordered first. |
| 5903 | */ |
| 5904 | int |
| 5905 | compare(size_type __pos, size_type __n, const basic_string& __str) const; |
| 5906 | |
| 5907 | /** |
| 5908 | * @brief Compare substring to a substring. |
| 5909 | * @param __pos1 Index of first character of substring. |
| 5910 | * @param __n1 Number of characters in substring. |
| 5911 | * @param __str String to compare against. |
| 5912 | * @param __pos2 Index of first character of substring of str. |
| 5913 | * @param __n2 Number of characters in substring of str. |
| 5914 | * @return Integer < 0, 0, or > 0. |
| 5915 | * |
| 5916 | * Form the substring of this string from the @a __n1 |
| 5917 | * characters starting at @a __pos1. Form the substring of @a |
| 5918 | * __str from the @a __n2 characters starting at @a __pos2. |
| 5919 | * Returns an integer < 0 if this substring is ordered before |
| 5920 | * the substring of @a __str, 0 if their values are equivalent, |
| 5921 | * or > 0 if this substring is ordered after the substring of |
| 5922 | * @a __str. Determines the effective length rlen of the |
| 5923 | * strings to compare as the smallest of the lengths of the |
| 5924 | * substrings. The function then compares the two strings by |
| 5925 | * calling |
| 5926 | * traits::compare(substring.data(),str.substr(pos2,n2).data(),rlen). |
| 5927 | * If the result of the comparison is nonzero returns it, |
| 5928 | * otherwise the shorter one is ordered first. |
| 5929 | */ |
| 5930 | int |
| 5931 | compare(size_type __pos1, size_type __n1, const basic_string& __str, |
| 5932 | size_type __pos2, size_type __n2 = npos) const; |
| 5933 | |
| 5934 | /** |
| 5935 | * @brief Compare to a C string. |
| 5936 | * @param __s C string to compare against. |
| 5937 | * @return Integer < 0, 0, or > 0. |
| 5938 | * |
| 5939 | * Returns an integer < 0 if this string is ordered before @a __s, 0 if |
| 5940 | * their values are equivalent, or > 0 if this string is ordered after |
| 5941 | * @a __s. Determines the effective length rlen of the strings to |
| 5942 | * compare as the smallest of size() and the length of a string |
| 5943 | * constructed from @a __s. The function then compares the two strings |
| 5944 | * by calling traits::compare(data(),s,rlen). If the result of the |
| 5945 | * comparison is nonzero returns it, otherwise the shorter one is |
| 5946 | * ordered first. |
| 5947 | */ |
| 5948 | int |
| 5949 | compare(const _CharT* __s) const _GLIBCXX_NOEXCEPT; |
| 5950 | |
| 5951 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
| 5952 | // 5 String::compare specification questionable |
| 5953 | /** |
| 5954 | * @brief Compare substring to a C string. |
| 5955 | * @param __pos Index of first character of substring. |
| 5956 | * @param __n1 Number of characters in substring. |
| 5957 | * @param __s C string to compare against. |
| 5958 | * @return Integer < 0, 0, or > 0. |
| 5959 | * |
| 5960 | * Form the substring of this string from the @a __n1 |
| 5961 | * characters starting at @a pos. Returns an integer < 0 if |
| 5962 | * the substring is ordered before @a __s, 0 if their values |
| 5963 | * are equivalent, or > 0 if the substring is ordered after @a |
| 5964 | * __s. Determines the effective length rlen of the strings to |
| 5965 | * compare as the smallest of the length of the substring and |
| 5966 | * the length of a string constructed from @a __s. The |
| 5967 | * function then compares the two string by calling |
| 5968 | * traits::compare(substring.data(),__s,rlen). If the result of |
| 5969 | * the comparison is nonzero returns it, otherwise the shorter |
| 5970 | * one is ordered first. |
| 5971 | */ |
| 5972 | int |
| 5973 | compare(size_type __pos, size_type __n1, const _CharT* __s) const; |
| 5974 | |
| 5975 | /** |
| 5976 | * @brief Compare substring against a character %array. |
| 5977 | * @param __pos Index of first character of substring. |
| 5978 | * @param __n1 Number of characters in substring. |
| 5979 | * @param __s character %array to compare against. |
| 5980 | * @param __n2 Number of characters of s. |
| 5981 | * @return Integer < 0, 0, or > 0. |
| 5982 | * |
| 5983 | * Form the substring of this string from the @a __n1 |
| 5984 | * characters starting at @a __pos. Form a string from the |
| 5985 | * first @a __n2 characters of @a __s. Returns an integer < 0 |
| 5986 | * if this substring is ordered before the string from @a __s, |
| 5987 | * 0 if their values are equivalent, or > 0 if this substring |
| 5988 | * is ordered after the string from @a __s. Determines the |
| 5989 | * effective length rlen of the strings to compare as the |
| 5990 | * smallest of the length of the substring and @a __n2. The |
| 5991 | * function then compares the two strings by calling |
| 5992 | * traits::compare(substring.data(),s,rlen). If the result of |
| 5993 | * the comparison is nonzero returns it, otherwise the shorter |
| 5994 | * one is ordered first. |
| 5995 | * |
| 5996 | * NB: s must have at least n2 characters, '\\0' has |
| 5997 | * no special meaning. |
| 5998 | */ |
| 5999 | int |
| 6000 | compare(size_type __pos, size_type __n1, const _CharT* __s, |
| 6001 | size_type __n2) const; |
| 6002 | |
| 6003 | #if __cplusplus > 201703L |
| 6004 | bool |
| 6005 | starts_with(basic_string_view<_CharT, _Traits> __x) const noexcept |
| 6006 | { return __sv_type(this->data(), this->size()).starts_with(__x); } |
| 6007 | |
| 6008 | bool |
| 6009 | starts_with(_CharT __x) const noexcept |
| 6010 | { return __sv_type(this->data(), this->size()).starts_with(__x); } |
| 6011 | |
| 6012 | bool |
| 6013 | starts_with(const _CharT* __x) const noexcept |
| 6014 | { return __sv_type(this->data(), this->size()).starts_with(__x); } |
| 6015 | |
| 6016 | bool |
| 6017 | ends_with(basic_string_view<_CharT, _Traits> __x) const noexcept |
| 6018 | { return __sv_type(this->data(), this->size()).ends_with(__x); } |
| 6019 | |
| 6020 | bool |
| 6021 | ends_with(_CharT __x) const noexcept |
| 6022 | { return __sv_type(this->data(), this->size()).ends_with(__x); } |
| 6023 | |
| 6024 | bool |
| 6025 | ends_with(const _CharT* __x) const noexcept |
| 6026 | { return __sv_type(this->data(), this->size()).ends_with(__x); } |
| 6027 | #endif // C++20 |
| 6028 | |
| 6029 | #if __cplusplus > 202011L |
| 6030 | bool |
| 6031 | contains(basic_string_view<_CharT, _Traits> __x) const noexcept |
| 6032 | { return __sv_type(this->data(), this->size()).contains(__x); } |
| 6033 | |
| 6034 | bool |
| 6035 | contains(_CharT __x) const noexcept |
| 6036 | { return __sv_type(this->data(), this->size()).contains(__x); } |
| 6037 | |
| 6038 | bool |
| 6039 | contains(const _CharT* __x) const noexcept |
| 6040 | { return __sv_type(this->data(), this->size()).contains(__x); } |
| 6041 | #endif // C++23 |
| 6042 | |
| 6043 | # ifdef _GLIBCXX_TM_TS_INTERNAL |
| 6044 | friend void |
| 6045 | ::_txnal_cow_string_C1_for_exceptions(void* that, const char* s, |
| 6046 | void* exc); |
| 6047 | friend const char* |
| 6048 | ::_txnal_cow_string_c_str(const void *that); |
| 6049 | friend void |
| 6050 | ::_txnal_cow_string_D1(void *that); |
| 6051 | friend void |
| 6052 | ::_txnal_cow_string_D1_commit(void *that); |
| 6053 | # endif |
| 6054 | }; |
| 6055 | #endif // !_GLIBCXX_USE_CXX11_ABI |
| 6056 | |
| 6057 | #if __cpp_deduction_guides >= 201606 |
| 6058 | _GLIBCXX_BEGIN_NAMESPACE_CXX11 |
| 6059 | template<typename _InputIterator, typename _CharT |
| 6060 | = typename iterator_traits<_InputIterator>::value_type, |
| 6061 | typename _Allocator = allocator<_CharT>, |
| 6062 | typename = _RequireInputIter<_InputIterator>, |
| 6063 | typename = _RequireAllocator<_Allocator>> |
| 6064 | basic_string(_InputIterator, _InputIterator, _Allocator = _Allocator()) |
| 6065 | -> basic_string<_CharT, char_traits<_CharT>, _Allocator>; |
| 6066 | |
| 6067 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
| 6068 | // 3075. basic_string needs deduction guides from basic_string_view |
| 6069 | template<typename _CharT, typename _Traits, |
| 6070 | typename _Allocator = allocator<_CharT>, |
| 6071 | typename = _RequireAllocator<_Allocator>> |
| 6072 | basic_string(basic_string_view<_CharT, _Traits>, const _Allocator& = _Allocator()) |
| 6073 | -> basic_string<_CharT, _Traits, _Allocator>; |
| 6074 | |
| 6075 | template<typename _CharT, typename _Traits, |
| 6076 | typename _Allocator = allocator<_CharT>, |
| 6077 | typename = _RequireAllocator<_Allocator>> |
| 6078 | basic_string(basic_string_view<_CharT, _Traits>, |
| 6079 | typename basic_string<_CharT, _Traits, _Allocator>::size_type, |
| 6080 | typename basic_string<_CharT, _Traits, _Allocator>::size_type, |
| 6081 | const _Allocator& = _Allocator()) |
| 6082 | -> basic_string<_CharT, _Traits, _Allocator>; |
| 6083 | _GLIBCXX_END_NAMESPACE_CXX11 |
| 6084 | #endif |
| 6085 | |
| 6086 | // operator+ |
| 6087 | /** |
| 6088 | * @brief Concatenate two strings. |
| 6089 | * @param __lhs First string. |
| 6090 | * @param __rhs Last string. |
| 6091 | * @return New string with value of @a __lhs followed by @a __rhs. |
| 6092 | */ |
| 6093 | template<typename _CharT, typename _Traits, typename _Alloc> |
| 6094 | basic_string<_CharT, _Traits, _Alloc> |
| 6095 | operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs, |
| 6096 | const basic_string<_CharT, _Traits, _Alloc>& __rhs) |
| 6097 | { |
| 6098 | basic_string<_CharT, _Traits, _Alloc> __str(__lhs); |
| 6099 | __str.append(__rhs); |
| 6100 | return __str; |
| 6101 | } |
| 6102 | |
| 6103 | /** |
| 6104 | * @brief Concatenate C string and string. |
| 6105 | * @param __lhs First string. |
| 6106 | * @param __rhs Last string. |
| 6107 | * @return New string with value of @a __lhs followed by @a __rhs. |
| 6108 | */ |
| 6109 | template<typename _CharT, typename _Traits, typename _Alloc> |
| 6110 | basic_string<_CharT,_Traits,_Alloc> |
| 6111 | operator+(const _CharT* __lhs, |
| 6112 | const basic_string<_CharT,_Traits,_Alloc>& __rhs); |
| 6113 | |
| 6114 | /** |
| 6115 | * @brief Concatenate character and string. |
| 6116 | * @param __lhs First string. |
| 6117 | * @param __rhs Last string. |
| 6118 | * @return New string with @a __lhs followed by @a __rhs. |
| 6119 | */ |
| 6120 | template<typename _CharT, typename _Traits, typename _Alloc> |
| 6121 | basic_string<_CharT,_Traits,_Alloc> |
| 6122 | operator+(_CharT __lhs, const basic_string<_CharT,_Traits,_Alloc>& __rhs); |
| 6123 | |
| 6124 | /** |
| 6125 | * @brief Concatenate string and C string. |
| 6126 | * @param __lhs First string. |
| 6127 | * @param __rhs Last string. |
| 6128 | * @return New string with @a __lhs followed by @a __rhs. |
| 6129 | */ |
| 6130 | template<typename _CharT, typename _Traits, typename _Alloc> |
| 6131 | inline basic_string<_CharT, _Traits, _Alloc> |
| 6132 | operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs, |
| 6133 | const _CharT* __rhs) |
| 6134 | { |
| 6135 | basic_string<_CharT, _Traits, _Alloc> __str(__lhs); |
| 6136 | __str.append(__rhs); |
| 6137 | return __str; |
| 6138 | } |
| 6139 | |
| 6140 | /** |
| 6141 | * @brief Concatenate string and character. |
| 6142 | * @param __lhs First string. |
| 6143 | * @param __rhs Last string. |
| 6144 | * @return New string with @a __lhs followed by @a __rhs. |
| 6145 | */ |
| 6146 | template<typename _CharT, typename _Traits, typename _Alloc> |
| 6147 | inline basic_string<_CharT, _Traits, _Alloc> |
| 6148 | operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs, _CharT __rhs) |
| 6149 | { |
| 6150 | typedef basic_string<_CharT, _Traits, _Alloc> __string_type; |
| 6151 | typedef typename __string_type::size_type __size_type; |
| 6152 | __string_type __str(__lhs); |
| 6153 | __str.append(__size_type(1), __rhs); |
| 6154 | return __str; |
| 6155 | } |
| 6156 | |
| 6157 | #if __cplusplus >= 201103L |
| 6158 | template<typename _CharT, typename _Traits, typename _Alloc> |
| 6159 | inline basic_string<_CharT, _Traits, _Alloc> |
| 6160 | operator+(basic_string<_CharT, _Traits, _Alloc>&& __lhs, |
| 6161 | const basic_string<_CharT, _Traits, _Alloc>& __rhs) |
| 6162 | { return std::move(__lhs.append(__rhs)); } |
| 6163 | |
| 6164 | template<typename _CharT, typename _Traits, typename _Alloc> |
| 6165 | inline basic_string<_CharT, _Traits, _Alloc> |
| 6166 | operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs, |
| 6167 | basic_string<_CharT, _Traits, _Alloc>&& __rhs) |
| 6168 | { return std::move(__rhs.insert(0, __lhs)); } |
| 6169 | |
| 6170 | template<typename _CharT, typename _Traits, typename _Alloc> |
| 6171 | inline basic_string<_CharT, _Traits, _Alloc> |
| 6172 | operator+(basic_string<_CharT, _Traits, _Alloc>&& __lhs, |
| 6173 | basic_string<_CharT, _Traits, _Alloc>&& __rhs) |
| 6174 | { |
| 6175 | #if _GLIBCXX_USE_CXX11_ABI |
| 6176 | using _Alloc_traits = allocator_traits<_Alloc>; |
| 6177 | bool __use_rhs = false; |
| 6178 | if _GLIBCXX17_CONSTEXPR (typename _Alloc_traits::is_always_equal{}) |
| 6179 | __use_rhs = true; |
| 6180 | else if (__lhs.get_allocator() == __rhs.get_allocator()) |
| 6181 | __use_rhs = true; |
| 6182 | if (__use_rhs) |
| 6183 | #endif |
| 6184 | { |
| 6185 | const auto __size = __lhs.size() + __rhs.size(); |
| 6186 | if (__size > __lhs.capacity() && __size <= __rhs.capacity()) |
| 6187 | return std::move(__rhs.insert(0, __lhs)); |
| 6188 | } |
| 6189 | return std::move(__lhs.append(__rhs)); |
| 6190 | } |
| 6191 | |
| 6192 | template<typename _CharT, typename _Traits, typename _Alloc> |
| 6193 | inline basic_string<_CharT, _Traits, _Alloc> |
| 6194 | operator+(const _CharT* __lhs, |
| 6195 | basic_string<_CharT, _Traits, _Alloc>&& __rhs) |
| 6196 | { return std::move(__rhs.insert(0, __lhs)); } |
| 6197 | |
| 6198 | template<typename _CharT, typename _Traits, typename _Alloc> |
| 6199 | inline basic_string<_CharT, _Traits, _Alloc> |
| 6200 | operator+(_CharT __lhs, |
| 6201 | basic_string<_CharT, _Traits, _Alloc>&& __rhs) |
| 6202 | { return std::move(__rhs.insert(0, 1, __lhs)); } |
| 6203 | |
| 6204 | template<typename _CharT, typename _Traits, typename _Alloc> |
| 6205 | inline basic_string<_CharT, _Traits, _Alloc> |
| 6206 | operator+(basic_string<_CharT, _Traits, _Alloc>&& __lhs, |
| 6207 | const _CharT* __rhs) |
| 6208 | { return std::move(__lhs.append(__rhs)); } |
| 6209 | |
| 6210 | template<typename _CharT, typename _Traits, typename _Alloc> |
| 6211 | inline basic_string<_CharT, _Traits, _Alloc> |
| 6212 | operator+(basic_string<_CharT, _Traits, _Alloc>&& __lhs, |
| 6213 | _CharT __rhs) |
| 6214 | { return std::move(__lhs.append(1, __rhs)); } |
| 6215 | #endif |
| 6216 | |
| 6217 | // operator == |
| 6218 | /** |
| 6219 | * @brief Test equivalence of two strings. |
| 6220 | * @param __lhs First string. |
| 6221 | * @param __rhs Second string. |
| 6222 | * @return True if @a __lhs.compare(@a __rhs) == 0. False otherwise. |
| 6223 | */ |
| 6224 | template<typename _CharT, typename _Traits, typename _Alloc> |
| 6225 | inline bool |
| 6226 | operator==(const basic_string<_CharT, _Traits, _Alloc>& __lhs, |
| 6227 | const basic_string<_CharT, _Traits, _Alloc>& __rhs) |
| 6228 | _GLIBCXX_NOEXCEPT |
| 6229 | { return __lhs.compare(__rhs) == 0; } |
| 6230 | |
| 6231 | template<typename _CharT> |
| 6232 | inline |
| 6233 | typename __gnu_cxx::__enable_if<__is_char<_CharT>::__value, bool>::__type |
| 6234 | operator==(const basic_string<_CharT>& __lhs, |
| 6235 | const basic_string<_CharT>& __rhs) _GLIBCXX_NOEXCEPT |
| 6236 | { return (__lhs.size() == __rhs.size() |
| 6237 | && !std::char_traits<_CharT>::compare(__lhs.data(), __rhs.data(), |
| 6238 | __lhs.size())); } |
| 6239 | |
| 6240 | /** |
| 6241 | * @brief Test equivalence of string and C string. |
| 6242 | * @param __lhs String. |
| 6243 | * @param __rhs C string. |
| 6244 | * @return True if @a __lhs.compare(@a __rhs) == 0. False otherwise. |
| 6245 | */ |
| 6246 | template<typename _CharT, typename _Traits, typename _Alloc> |
| 6247 | inline bool |
| 6248 | operator==(const basic_string<_CharT, _Traits, _Alloc>& __lhs, |
| 6249 | const _CharT* __rhs) |
| 6250 | { return __lhs.compare(__rhs) == 0; } |
| 6251 | |
| 6252 | #if __cpp_lib_three_way_comparison |
| 6253 | /** |
| 6254 | * @brief Three-way comparison of a string and a C string. |
| 6255 | * @param __lhs A string. |
| 6256 | * @param __rhs A null-terminated string. |
| 6257 | * @return A value indicating whether `__lhs` is less than, equal to, |
| 6258 | * greater than, or incomparable with `__rhs`. |
| 6259 | */ |
| 6260 | template<typename _CharT, typename _Traits, typename _Alloc> |
| 6261 | inline auto |
| 6262 | operator<=>(const basic_string<_CharT, _Traits, _Alloc>& __lhs, |
| 6263 | const basic_string<_CharT, _Traits, _Alloc>& __rhs) noexcept |
| 6264 | -> decltype(__detail::__char_traits_cmp_cat<_Traits>(0)) |
| 6265 | { return __detail::__char_traits_cmp_cat<_Traits>(__lhs.compare(__rhs)); } |
| 6266 | |
| 6267 | /** |
| 6268 | * @brief Three-way comparison of a string and a C string. |
| 6269 | * @param __lhs A string. |
| 6270 | * @param __rhs A null-terminated string. |
| 6271 | * @return A value indicating whether `__lhs` is less than, equal to, |
| 6272 | * greater than, or incomparable with `__rhs`. |
| 6273 | */ |
| 6274 | template<typename _CharT, typename _Traits, typename _Alloc> |
| 6275 | inline auto |
| 6276 | operator<=>(const basic_string<_CharT, _Traits, _Alloc>& __lhs, |
| 6277 | const _CharT* __rhs) noexcept |
| 6278 | -> decltype(__detail::__char_traits_cmp_cat<_Traits>(0)) |
| 6279 | { return __detail::__char_traits_cmp_cat<_Traits>(__lhs.compare(__rhs)); } |
| 6280 | #else |
| 6281 | /** |
| 6282 | * @brief Test equivalence of C string and string. |
| 6283 | * @param __lhs C string. |
| 6284 | * @param __rhs String. |
| 6285 | * @return True if @a __rhs.compare(@a __lhs) == 0. False otherwise. |
| 6286 | */ |
| 6287 | template<typename _CharT, typename _Traits, typename _Alloc> |
| 6288 | inline bool |
| 6289 | operator==(const _CharT* __lhs, |
| 6290 | const basic_string<_CharT, _Traits, _Alloc>& __rhs) |
| 6291 | { return __rhs.compare(__lhs) == 0; } |
| 6292 | |
| 6293 | // operator != |
| 6294 | /** |
| 6295 | * @brief Test difference of two strings. |
| 6296 | * @param __lhs First string. |
| 6297 | * @param __rhs Second string. |
| 6298 | * @return True if @a __lhs.compare(@a __rhs) != 0. False otherwise. |
| 6299 | */ |
| 6300 | template<typename _CharT, typename _Traits, typename _Alloc> |
| 6301 | inline bool |
| 6302 | operator!=(const basic_string<_CharT, _Traits, _Alloc>& __lhs, |
| 6303 | const basic_string<_CharT, _Traits, _Alloc>& __rhs) |
| 6304 | _GLIBCXX_NOEXCEPT |
| 6305 | { return !(__lhs == __rhs); } |
| 6306 | |
| 6307 | /** |
| 6308 | * @brief Test difference of C string and string. |
| 6309 | * @param __lhs C string. |
| 6310 | * @param __rhs String. |
| 6311 | * @return True if @a __rhs.compare(@a __lhs) != 0. False otherwise. |
| 6312 | */ |
| 6313 | template<typename _CharT, typename _Traits, typename _Alloc> |
| 6314 | inline bool |
| 6315 | operator!=(const _CharT* __lhs, |
| 6316 | const basic_string<_CharT, _Traits, _Alloc>& __rhs) |
| 6317 | { return !(__lhs == __rhs); } |
| 6318 | |
| 6319 | /** |
| 6320 | * @brief Test difference of string and C string. |
| 6321 | * @param __lhs String. |
| 6322 | * @param __rhs C string. |
| 6323 | * @return True if @a __lhs.compare(@a __rhs) != 0. False otherwise. |
| 6324 | */ |
| 6325 | template<typename _CharT, typename _Traits, typename _Alloc> |
| 6326 | inline bool |
| 6327 | operator!=(const basic_string<_CharT, _Traits, _Alloc>& __lhs, |
| 6328 | const _CharT* __rhs) |
| 6329 | { return !(__lhs == __rhs); } |
| 6330 | |
| 6331 | // operator < |
| 6332 | /** |
| 6333 | * @brief Test if string precedes string. |
| 6334 | * @param __lhs First string. |
| 6335 | * @param __rhs Second string. |
| 6336 | * @return True if @a __lhs precedes @a __rhs. False otherwise. |
| 6337 | */ |
| 6338 | template<typename _CharT, typename _Traits, typename _Alloc> |
| 6339 | inline bool |
| 6340 | operator<(const basic_string<_CharT, _Traits, _Alloc>& __lhs, |
| 6341 | const basic_string<_CharT, _Traits, _Alloc>& __rhs) |
| 6342 | _GLIBCXX_NOEXCEPT |
| 6343 | { return __lhs.compare(__rhs) < 0; } |
| 6344 | |
| 6345 | /** |
| 6346 | * @brief Test if string precedes C string. |
| 6347 | * @param __lhs String. |
| 6348 | * @param __rhs C string. |
| 6349 | * @return True if @a __lhs precedes @a __rhs. False otherwise. |
| 6350 | */ |
| 6351 | template<typename _CharT, typename _Traits, typename _Alloc> |
| 6352 | inline bool |
| 6353 | operator<(const basic_string<_CharT, _Traits, _Alloc>& __lhs, |
| 6354 | const _CharT* __rhs) |
| 6355 | { return __lhs.compare(__rhs) < 0; } |
| 6356 | |
| 6357 | /** |
| 6358 | * @brief Test if C string precedes string. |
| 6359 | * @param __lhs C string. |
| 6360 | * @param __rhs String. |
| 6361 | * @return True if @a __lhs precedes @a __rhs. False otherwise. |
| 6362 | */ |
| 6363 | template<typename _CharT, typename _Traits, typename _Alloc> |
| 6364 | inline bool |
| 6365 | operator<(const _CharT* __lhs, |
| 6366 | const basic_string<_CharT, _Traits, _Alloc>& __rhs) |
| 6367 | { return __rhs.compare(__lhs) > 0; } |
| 6368 | |
| 6369 | // operator > |
| 6370 | /** |
| 6371 | * @brief Test if string follows string. |
| 6372 | * @param __lhs First string. |
| 6373 | * @param __rhs Second string. |
| 6374 | * @return True if @a __lhs follows @a __rhs. False otherwise. |
| 6375 | */ |
| 6376 | template<typename _CharT, typename _Traits, typename _Alloc> |
| 6377 | inline bool |
| 6378 | operator>(const basic_string<_CharT, _Traits, _Alloc>& __lhs, |
| 6379 | const basic_string<_CharT, _Traits, _Alloc>& __rhs) |
| 6380 | _GLIBCXX_NOEXCEPT |
| 6381 | { return __lhs.compare(__rhs) > 0; } |
| 6382 | |
| 6383 | /** |
| 6384 | * @brief Test if string follows C string. |
| 6385 | * @param __lhs String. |
| 6386 | * @param __rhs C string. |
| 6387 | * @return True if @a __lhs follows @a __rhs. False otherwise. |
| 6388 | */ |
| 6389 | template<typename _CharT, typename _Traits, typename _Alloc> |
| 6390 | inline bool |
| 6391 | operator>(const basic_string<_CharT, _Traits, _Alloc>& __lhs, |
| 6392 | const _CharT* __rhs) |
| 6393 | { return __lhs.compare(__rhs) > 0; } |
| 6394 | |
| 6395 | /** |
| 6396 | * @brief Test if C string follows string. |
| 6397 | * @param __lhs C string. |
| 6398 | * @param __rhs String. |
| 6399 | * @return True if @a __lhs follows @a __rhs. False otherwise. |
| 6400 | */ |
| 6401 | template<typename _CharT, typename _Traits, typename _Alloc> |
| 6402 | inline bool |
| 6403 | operator>(const _CharT* __lhs, |
| 6404 | const basic_string<_CharT, _Traits, _Alloc>& __rhs) |
| 6405 | { return __rhs.compare(__lhs) < 0; } |
| 6406 | |
| 6407 | // operator <= |
| 6408 | /** |
| 6409 | * @brief Test if string doesn't follow string. |
| 6410 | * @param __lhs First string. |
| 6411 | * @param __rhs Second string. |
| 6412 | * @return True if @a __lhs doesn't follow @a __rhs. False otherwise. |
| 6413 | */ |
| 6414 | template<typename _CharT, typename _Traits, typename _Alloc> |
| 6415 | inline bool |
| 6416 | operator<=(const basic_string<_CharT, _Traits, _Alloc>& __lhs, |
| 6417 | const basic_string<_CharT, _Traits, _Alloc>& __rhs) |
| 6418 | _GLIBCXX_NOEXCEPT |
| 6419 | { return __lhs.compare(__rhs) <= 0; } |
| 6420 | |
| 6421 | /** |
| 6422 | * @brief Test if string doesn't follow C string. |
| 6423 | * @param __lhs String. |
| 6424 | * @param __rhs C string. |
| 6425 | * @return True if @a __lhs doesn't follow @a __rhs. False otherwise. |
| 6426 | */ |
| 6427 | template<typename _CharT, typename _Traits, typename _Alloc> |
| 6428 | inline bool |
| 6429 | operator<=(const basic_string<_CharT, _Traits, _Alloc>& __lhs, |
| 6430 | const _CharT* __rhs) |
| 6431 | { return __lhs.compare(__rhs) <= 0; } |
| 6432 | |
| 6433 | /** |
| 6434 | * @brief Test if C string doesn't follow string. |
| 6435 | * @param __lhs C string. |
| 6436 | * @param __rhs String. |
| 6437 | * @return True if @a __lhs doesn't follow @a __rhs. False otherwise. |
| 6438 | */ |
| 6439 | template<typename _CharT, typename _Traits, typename _Alloc> |
| 6440 | inline bool |
| 6441 | operator<=(const _CharT* __lhs, |
| 6442 | const basic_string<_CharT, _Traits, _Alloc>& __rhs) |
| 6443 | { return __rhs.compare(__lhs) >= 0; } |
| 6444 | |
| 6445 | // operator >= |
| 6446 | /** |
| 6447 | * @brief Test if string doesn't precede string. |
| 6448 | * @param __lhs First string. |
| 6449 | * @param __rhs Second string. |
| 6450 | * @return True if @a __lhs doesn't precede @a __rhs. False otherwise. |
| 6451 | */ |
| 6452 | template<typename _CharT, typename _Traits, typename _Alloc> |
| 6453 | inline bool |
| 6454 | operator>=(const basic_string<_CharT, _Traits, _Alloc>& __lhs, |
| 6455 | const basic_string<_CharT, _Traits, _Alloc>& __rhs) |
| 6456 | _GLIBCXX_NOEXCEPT |
| 6457 | { return __lhs.compare(__rhs) >= 0; } |
| 6458 | |
| 6459 | /** |
| 6460 | * @brief Test if string doesn't precede C string. |
| 6461 | * @param __lhs String. |
| 6462 | * @param __rhs C string. |
| 6463 | * @return True if @a __lhs doesn't precede @a __rhs. False otherwise. |
| 6464 | */ |
| 6465 | template<typename _CharT, typename _Traits, typename _Alloc> |
| 6466 | inline bool |
| 6467 | operator>=(const basic_string<_CharT, _Traits, _Alloc>& __lhs, |
| 6468 | const _CharT* __rhs) |
| 6469 | { return __lhs.compare(__rhs) >= 0; } |
| 6470 | |
| 6471 | /** |
| 6472 | * @brief Test if C string doesn't precede string. |
| 6473 | * @param __lhs C string. |
| 6474 | * @param __rhs String. |
| 6475 | * @return True if @a __lhs doesn't precede @a __rhs. False otherwise. |
| 6476 | */ |
| 6477 | template<typename _CharT, typename _Traits, typename _Alloc> |
| 6478 | inline bool |
| 6479 | operator>=(const _CharT* __lhs, |
| 6480 | const basic_string<_CharT, _Traits, _Alloc>& __rhs) |
| 6481 | { return __rhs.compare(__lhs) <= 0; } |
| 6482 | #endif // three-way comparison |
| 6483 | |
| 6484 | /** |
| 6485 | * @brief Swap contents of two strings. |
| 6486 | * @param __lhs First string. |
| 6487 | * @param __rhs Second string. |
| 6488 | * |
| 6489 | * Exchanges the contents of @a __lhs and @a __rhs in constant time. |
| 6490 | */ |
| 6491 | template<typename _CharT, typename _Traits, typename _Alloc> |
| 6492 | inline void |
| 6493 | swap(basic_string<_CharT, _Traits, _Alloc>& __lhs, |
| 6494 | basic_string<_CharT, _Traits, _Alloc>& __rhs) |
| 6495 | _GLIBCXX_NOEXCEPT_IF(noexcept(__lhs.swap(__rhs))) |
| 6496 | { __lhs.swap(__rhs); } |
| 6497 | |
| 6498 | |
| 6499 | /** |
| 6500 | * @brief Read stream into a string. |
| 6501 | * @param __is Input stream. |
| 6502 | * @param __str Buffer to store into. |
| 6503 | * @return Reference to the input stream. |
| 6504 | * |
| 6505 | * Stores characters from @a __is into @a __str until whitespace is |
| 6506 | * found, the end of the stream is encountered, or str.max_size() |
| 6507 | * is reached. If is.width() is non-zero, that is the limit on the |
| 6508 | * number of characters stored into @a __str. Any previous |
| 6509 | * contents of @a __str are erased. |
| 6510 | */ |
| 6511 | template<typename _CharT, typename _Traits, typename _Alloc> |
| 6512 | basic_istream<_CharT, _Traits>& |
| 6513 | operator>>(basic_istream<_CharT, _Traits>& __is, |
| 6514 | basic_string<_CharT, _Traits, _Alloc>& __str); |
| 6515 | |
| 6516 | template<> |
| 6517 | basic_istream<char>& |
| 6518 | operator>>(basic_istream<char>& __is, basic_string<char>& __str); |
| 6519 | |
| 6520 | /** |
| 6521 | * @brief Write string to a stream. |
| 6522 | * @param __os Output stream. |
| 6523 | * @param __str String to write out. |
| 6524 | * @return Reference to the output stream. |
| 6525 | * |
| 6526 | * Output characters of @a __str into os following the same rules as for |
| 6527 | * writing a C string. |
| 6528 | */ |
| 6529 | template<typename _CharT, typename _Traits, typename _Alloc> |
| 6530 | inline basic_ostream<_CharT, _Traits>& |
| 6531 | operator<<(basic_ostream<_CharT, _Traits>& __os, |
| 6532 | const basic_string<_CharT, _Traits, _Alloc>& __str) |
| 6533 | { |
| 6534 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
| 6535 | // 586. string inserter not a formatted function |
| 6536 | return __ostream_insert(__os, __str.data(), __str.size()); |
| 6537 | } |
| 6538 | |
| 6539 | /** |
| 6540 | * @brief Read a line from stream into a string. |
| 6541 | * @param __is Input stream. |
| 6542 | * @param __str Buffer to store into. |
| 6543 | * @param __delim Character marking end of line. |
| 6544 | * @return Reference to the input stream. |
| 6545 | * |
| 6546 | * Stores characters from @a __is into @a __str until @a __delim is |
| 6547 | * found, the end of the stream is encountered, or str.max_size() |
| 6548 | * is reached. Any previous contents of @a __str are erased. If |
| 6549 | * @a __delim is encountered, it is extracted but not stored into |
| 6550 | * @a __str. |
| 6551 | */ |
| 6552 | template<typename _CharT, typename _Traits, typename _Alloc> |
| 6553 | basic_istream<_CharT, _Traits>& |
| 6554 | getline(basic_istream<_CharT, _Traits>& __is, |
| 6555 | basic_string<_CharT, _Traits, _Alloc>& __str, _CharT __delim); |
| 6556 | |
| 6557 | /** |
| 6558 | * @brief Read a line from stream into a string. |
| 6559 | * @param __is Input stream. |
| 6560 | * @param __str Buffer to store into. |
| 6561 | * @return Reference to the input stream. |
| 6562 | * |
| 6563 | * Stores characters from is into @a __str until '\n' is |
| 6564 | * found, the end of the stream is encountered, or str.max_size() |
| 6565 | * is reached. Any previous contents of @a __str are erased. If |
| 6566 | * end of line is encountered, it is extracted but not stored into |
| 6567 | * @a __str. |
| 6568 | */ |
| 6569 | template<typename _CharT, typename _Traits, typename _Alloc> |
| 6570 | inline basic_istream<_CharT, _Traits>& |
| 6571 | getline(basic_istream<_CharT, _Traits>& __is, |
| 6572 | basic_string<_CharT, _Traits, _Alloc>& __str) |
| 6573 | { return std::getline(__is, __str, __is.widen('\n')); } |
| 6574 | |
| 6575 | #if __cplusplus >= 201103L |
| 6576 | /// Read a line from an rvalue stream into a string. |
| 6577 | template<typename _CharT, typename _Traits, typename _Alloc> |
| 6578 | inline basic_istream<_CharT, _Traits>& |
| 6579 | getline(basic_istream<_CharT, _Traits>&& __is, |
| 6580 | basic_string<_CharT, _Traits, _Alloc>& __str, _CharT __delim) |
| 6581 | { return std::getline(__is, __str, __delim); } |
| 6582 | |
| 6583 | /// Read a line from an rvalue stream into a string. |
| 6584 | template<typename _CharT, typename _Traits, typename _Alloc> |
| 6585 | inline basic_istream<_CharT, _Traits>& |
| 6586 | getline(basic_istream<_CharT, _Traits>&& __is, |
| 6587 | basic_string<_CharT, _Traits, _Alloc>& __str) |
| 6588 | { return std::getline(__is, __str); } |
| 6589 | #endif |
| 6590 | |
| 6591 | template<> |
| 6592 | basic_istream<char>& |
| 6593 | getline(basic_istream<char>& __in, basic_string<char>& __str, |
| 6594 | char __delim); |
| 6595 | |
| 6596 | #ifdef _GLIBCXX_USE_WCHAR_T |
| 6597 | template<> |
| 6598 | basic_istream<wchar_t>& |
| 6599 | getline(basic_istream<wchar_t>& __in, basic_string<wchar_t>& __str, |
| 6600 | wchar_t __delim); |
| 6601 | #endif |
| 6602 | |
| 6603 | _GLIBCXX_END_NAMESPACE_VERSION |
| 6604 | } // namespace |
| 6605 | |
| 6606 | #if __cplusplus >= 201103L |
| 6607 | |
| 6608 | #include <ext/string_conversions.h> |
| 6609 | #include <bits/charconv.h> |
| 6610 | |
| 6611 | namespace std _GLIBCXX_VISIBILITY(default) |
| 6612 | { |
| 6613 | _GLIBCXX_BEGIN_NAMESPACE_VERSION |
| 6614 | _GLIBCXX_BEGIN_NAMESPACE_CXX11 |
| 6615 | |
| 6616 | #if _GLIBCXX_USE_C99_STDLIB |
| 6617 | // 21.4 Numeric Conversions [string.conversions]. |
| 6618 | inline int |
| 6619 | stoi(const string& __str, size_t* __idx = 0, int __base = 10) |
| 6620 | { return __gnu_cxx::__stoa<long, int>(&std::strtol, "stoi", __str.c_str(), |
| 6621 | __idx, __base); } |
| 6622 | |
| 6623 | inline long |
| 6624 | stol(const string& __str, size_t* __idx = 0, int __base = 10) |
| 6625 | { return __gnu_cxx::__stoa(&std::strtol, "stol", __str.c_str(), |
| 6626 | __idx, __base); } |
| 6627 | |
| 6628 | inline unsigned long |
| 6629 | stoul(const string& __str, size_t* __idx = 0, int __base = 10) |
| 6630 | { return __gnu_cxx::__stoa(&std::strtoul, "stoul", __str.c_str(), |
| 6631 | __idx, __base); } |
| 6632 | |
| 6633 | inline long long |
| 6634 | stoll(const string& __str, size_t* __idx = 0, int __base = 10) |
| 6635 | { return __gnu_cxx::__stoa(&std::strtoll, "stoll", __str.c_str(), |
| 6636 | __idx, __base); } |
| 6637 | |
| 6638 | inline unsigned long long |
| 6639 | stoull(const string& __str, size_t* __idx = 0, int __base = 10) |
| 6640 | { return __gnu_cxx::__stoa(&std::strtoull, "stoull", __str.c_str(), |
| 6641 | __idx, __base); } |
| 6642 | |
| 6643 | // NB: strtof vs strtod. |
| 6644 | inline float |
| 6645 | stof(const string& __str, size_t* __idx = 0) |
| 6646 | { return __gnu_cxx::__stoa(&std::strtof, "stof", __str.c_str(), __idx); } |
| 6647 | |
| 6648 | inline double |
| 6649 | stod(const string& __str, size_t* __idx = 0) |
| 6650 | { return __gnu_cxx::__stoa(&std::strtod, "stod", __str.c_str(), __idx); } |
| 6651 | |
| 6652 | inline long double |
| 6653 | stold(const string& __str, size_t* __idx = 0) |
| 6654 | { return __gnu_cxx::__stoa(&std::strtold, "stold", __str.c_str(), __idx); } |
| 6655 | #endif // _GLIBCXX_USE_C99_STDLIB |
| 6656 | |
| 6657 | // DR 1261. Insufficent overloads for to_string / to_wstring |
| 6658 | |
| 6659 | inline string |
| 6660 | to_string(int __val) |
| 6661 | { |
| 6662 | const bool __neg = __val < 0; |
| 6663 | const unsigned __uval = __neg ? (unsigned)~__val + 1u : __val; |
| 6664 | const auto __len = __detail::__to_chars_len(__uval); |
| 6665 | string __str(__neg + __len, '-'); |
| 6666 | __detail::__to_chars_10_impl(&__str[__neg], __len, __uval); |
| 6667 | return __str; |
| 6668 | } |
| 6669 | |
| 6670 | inline string |
| 6671 | to_string(unsigned __val) |
| 6672 | { |
| 6673 | string __str(__detail::__to_chars_len(__val), '\0'); |
| 6674 | __detail::__to_chars_10_impl(&__str[0], __str.size(), __val); |
| 6675 | return __str; |
| 6676 | } |
| 6677 | |
| 6678 | inline string |
| 6679 | to_string(long __val) |
| 6680 | { |
| 6681 | const bool __neg = __val < 0; |
| 6682 | const unsigned long __uval = __neg ? (unsigned long)~__val + 1ul : __val; |
| 6683 | const auto __len = __detail::__to_chars_len(__uval); |
| 6684 | string __str(__neg + __len, '-'); |
| 6685 | __detail::__to_chars_10_impl(&__str[__neg], __len, __uval); |
| 6686 | return __str; |
| 6687 | } |
| 6688 | |
| 6689 | inline string |
| 6690 | to_string(unsigned long __val) |
| 6691 | { |
| 6692 | string __str(__detail::__to_chars_len(__val), '\0'); |
| 6693 | __detail::__to_chars_10_impl(&__str[0], __str.size(), __val); |
| 6694 | return __str; |
| 6695 | } |
| 6696 | |
| 6697 | inline string |
| 6698 | to_string(long long __val) |
| 6699 | { |
| 6700 | const bool __neg = __val < 0; |
| 6701 | const unsigned long long __uval |
| 6702 | = __neg ? (unsigned long long)~__val + 1ull : __val; |
| 6703 | const auto __len = __detail::__to_chars_len(__uval); |
| 6704 | string __str(__neg + __len, '-'); |
| 6705 | __detail::__to_chars_10_impl(&__str[__neg], __len, __uval); |
| 6706 | return __str; |
| 6707 | } |
| 6708 | |
| 6709 | inline string |
| 6710 | to_string(unsigned long long __val) |
| 6711 | { |
| 6712 | string __str(__detail::__to_chars_len(__val), '\0'); |
| 6713 | __detail::__to_chars_10_impl(&__str[0], __str.size(), __val); |
| 6714 | return __str; |
| 6715 | } |
| 6716 | |
| 6717 | #if _GLIBCXX_USE_C99_STDIO |
| 6718 | // NB: (v)snprintf vs sprintf. |
| 6719 | |
| 6720 | inline string |
| 6721 | to_string(float __val) |
| 6722 | { |
| 6723 | const int __n = |
| 6724 | __gnu_cxx::__numeric_traits<float>::__max_exponent10 + 20; |
| 6725 | return __gnu_cxx::__to_xstring<string>(&std::vsnprintf, __n, |
| 6726 | "%f", __val); |
| 6727 | } |
| 6728 | |
| 6729 | inline string |
| 6730 | to_string(double __val) |
| 6731 | { |
| 6732 | const int __n = |
| 6733 | __gnu_cxx::__numeric_traits<double>::__max_exponent10 + 20; |
| 6734 | return __gnu_cxx::__to_xstring<string>(&std::vsnprintf, __n, |
| 6735 | "%f", __val); |
| 6736 | } |
| 6737 | |
| 6738 | inline string |
| 6739 | to_string(long double __val) |
| 6740 | { |
| 6741 | const int __n = |
| 6742 | __gnu_cxx::__numeric_traits<long double>::__max_exponent10 + 20; |
| 6743 | return __gnu_cxx::__to_xstring<string>(&std::vsnprintf, __n, |
| 6744 | "%Lf", __val); |
| 6745 | } |
| 6746 | #endif // _GLIBCXX_USE_C99_STDIO |
| 6747 | |
| 6748 | #if defined(_GLIBCXX_USE_WCHAR_T) && _GLIBCXX_USE_C99_WCHAR |
| 6749 | inline int |
| 6750 | stoi(const wstring& __str, size_t* __idx = 0, int __base = 10) |
| 6751 | { return __gnu_cxx::__stoa<long, int>(&std::wcstol, "stoi", __str.c_str(), |
| 6752 | __idx, __base); } |
| 6753 | |
| 6754 | inline long |
| 6755 | stol(const wstring& __str, size_t* __idx = 0, int __base = 10) |
| 6756 | { return __gnu_cxx::__stoa(&std::wcstol, "stol", __str.c_str(), |
| 6757 | __idx, __base); } |
| 6758 | |
| 6759 | inline unsigned long |
| 6760 | stoul(const wstring& __str, size_t* __idx = 0, int __base = 10) |
| 6761 | { return __gnu_cxx::__stoa(&std::wcstoul, "stoul", __str.c_str(), |
| 6762 | __idx, __base); } |
| 6763 | |
| 6764 | inline long long |
| 6765 | stoll(const wstring& __str, size_t* __idx = 0, int __base = 10) |
| 6766 | { return __gnu_cxx::__stoa(&std::wcstoll, "stoll", __str.c_str(), |
| 6767 | __idx, __base); } |
| 6768 | |
| 6769 | inline unsigned long long |
| 6770 | stoull(const wstring& __str, size_t* __idx = 0, int __base = 10) |
| 6771 | { return __gnu_cxx::__stoa(&std::wcstoull, "stoull", __str.c_str(), |
| 6772 | __idx, __base); } |
| 6773 | |
| 6774 | // NB: wcstof vs wcstod. |
| 6775 | inline float |
| 6776 | stof(const wstring& __str, size_t* __idx = 0) |
| 6777 | { return __gnu_cxx::__stoa(&std::wcstof, "stof", __str.c_str(), __idx); } |
| 6778 | |
| 6779 | inline double |
| 6780 | stod(const wstring& __str, size_t* __idx = 0) |
| 6781 | { return __gnu_cxx::__stoa(&std::wcstod, "stod", __str.c_str(), __idx); } |
| 6782 | |
| 6783 | inline long double |
| 6784 | stold(const wstring& __str, size_t* __idx = 0) |
| 6785 | { return __gnu_cxx::__stoa(&std::wcstold, "stold", __str.c_str(), __idx); } |
| 6786 | |
| 6787 | #ifndef _GLIBCXX_HAVE_BROKEN_VSWPRINTF |
| 6788 | // DR 1261. |
| 6789 | inline wstring |
| 6790 | to_wstring(int __val) |
| 6791 | { return __gnu_cxx::__to_xstring<wstring>(&std::vswprintf, 4 * sizeof(int), |
| 6792 | L"%d", __val); } |
| 6793 | |
| 6794 | inline wstring |
| 6795 | to_wstring(unsigned __val) |
| 6796 | { return __gnu_cxx::__to_xstring<wstring>(&std::vswprintf, |
| 6797 | 4 * sizeof(unsigned), |
| 6798 | L"%u", __val); } |
| 6799 | |
| 6800 | inline wstring |
| 6801 | to_wstring(long __val) |
| 6802 | { return __gnu_cxx::__to_xstring<wstring>(&std::vswprintf, 4 * sizeof(long), |
| 6803 | L"%ld", __val); } |
| 6804 | |
| 6805 | inline wstring |
| 6806 | to_wstring(unsigned long __val) |
| 6807 | { return __gnu_cxx::__to_xstring<wstring>(&std::vswprintf, |
| 6808 | 4 * sizeof(unsigned long), |
| 6809 | L"%lu", __val); } |
| 6810 | |
| 6811 | inline wstring |
| 6812 | to_wstring(long long __val) |
| 6813 | { return __gnu_cxx::__to_xstring<wstring>(&std::vswprintf, |
| 6814 | 4 * sizeof(long long), |
| 6815 | L"%lld", __val); } |
| 6816 | |
| 6817 | inline wstring |
| 6818 | to_wstring(unsigned long long __val) |
| 6819 | { return __gnu_cxx::__to_xstring<wstring>(&std::vswprintf, |
| 6820 | 4 * sizeof(unsigned long long), |
| 6821 | L"%llu", __val); } |
| 6822 | |
| 6823 | inline wstring |
| 6824 | to_wstring(float __val) |
| 6825 | { |
| 6826 | const int __n = |
| 6827 | __gnu_cxx::__numeric_traits<float>::__max_exponent10 + 20; |
| 6828 | return __gnu_cxx::__to_xstring<wstring>(&std::vswprintf, __n, |
| 6829 | L"%f", __val); |
| 6830 | } |
| 6831 | |
| 6832 | inline wstring |
| 6833 | to_wstring(double __val) |
| 6834 | { |
| 6835 | const int __n = |
| 6836 | __gnu_cxx::__numeric_traits<double>::__max_exponent10 + 20; |
| 6837 | return __gnu_cxx::__to_xstring<wstring>(&std::vswprintf, __n, |
| 6838 | L"%f", __val); |
| 6839 | } |
| 6840 | |
| 6841 | inline wstring |
| 6842 | to_wstring(long double __val) |
| 6843 | { |
| 6844 | const int __n = |
| 6845 | __gnu_cxx::__numeric_traits<long double>::__max_exponent10 + 20; |
| 6846 | return __gnu_cxx::__to_xstring<wstring>(&std::vswprintf, __n, |
| 6847 | L"%Lf", __val); |
| 6848 | } |
| 6849 | #endif // _GLIBCXX_HAVE_BROKEN_VSWPRINTF |
| 6850 | #endif // _GLIBCXX_USE_WCHAR_T && _GLIBCXX_USE_C99_WCHAR |
| 6851 | |
| 6852 | _GLIBCXX_END_NAMESPACE_CXX11 |
| 6853 | _GLIBCXX_END_NAMESPACE_VERSION |
| 6854 | } // namespace |
| 6855 | |
| 6856 | #endif /* C++11 */ |
| 6857 | |
| 6858 | #if __cplusplus >= 201103L |
| 6859 | |
| 6860 | #include <bits/functional_hash.h> |
| 6861 | |
| 6862 | namespace std _GLIBCXX_VISIBILITY(default) |
| 6863 | { |
| 6864 | _GLIBCXX_BEGIN_NAMESPACE_VERSION |
| 6865 | |
| 6866 | // DR 1182. |
| 6867 | |
| 6868 | #ifndef _GLIBCXX_COMPATIBILITY_CXX0X |
| 6869 | /// std::hash specialization for string. |
| 6870 | template<> |
| 6871 | struct hash<string> |
| 6872 | : public __hash_base<size_t, string> |
| 6873 | { |
| 6874 | size_t |
| 6875 | operator()(const string& __s) const noexcept |
| 6876 | { return std::_Hash_impl::hash(__s.data(), __s.length()); } |
| 6877 | }; |
| 6878 | |
| 6879 | template<> |
| 6880 | struct __is_fast_hash<hash<string>> : std::false_type |
| 6881 | { }; |
| 6882 | |
| 6883 | #ifdef _GLIBCXX_USE_WCHAR_T |
| 6884 | /// std::hash specialization for wstring. |
| 6885 | template<> |
| 6886 | struct hash<wstring> |
| 6887 | : public __hash_base<size_t, wstring> |
| 6888 | { |
| 6889 | size_t |
| 6890 | operator()(const wstring& __s) const noexcept |
| 6891 | { return std::_Hash_impl::hash(__s.data(), |
| 6892 | __s.length() * sizeof(wchar_t)); } |
| 6893 | }; |
| 6894 | |
| 6895 | template<> |
| 6896 | struct __is_fast_hash<hash<wstring>> : std::false_type |
| 6897 | { }; |
| 6898 | #endif |
| 6899 | #endif /* _GLIBCXX_COMPATIBILITY_CXX0X */ |
| 6900 | |
| 6901 | #ifdef _GLIBCXX_USE_CHAR8_T |
| 6902 | /// std::hash specialization for u8string. |
| 6903 | template<> |
| 6904 | struct hash<u8string> |
| 6905 | : public __hash_base<size_t, u8string> |
| 6906 | { |
| 6907 | size_t |
| 6908 | operator()(const u8string& __s) const noexcept |
| 6909 | { return std::_Hash_impl::hash(__s.data(), |
| 6910 | __s.length() * sizeof(char8_t)); } |
| 6911 | }; |
| 6912 | |
| 6913 | template<> |
| 6914 | struct __is_fast_hash<hash<u8string>> : std::false_type |
| 6915 | { }; |
| 6916 | #endif |
| 6917 | |
| 6918 | /// std::hash specialization for u16string. |
| 6919 | template<> |
| 6920 | struct hash<u16string> |
| 6921 | : public __hash_base<size_t, u16string> |
| 6922 | { |
| 6923 | size_t |
| 6924 | operator()(const u16string& __s) const noexcept |
| 6925 | { return std::_Hash_impl::hash(__s.data(), |
| 6926 | __s.length() * sizeof(char16_t)); } |
| 6927 | }; |
| 6928 | |
| 6929 | template<> |
| 6930 | struct __is_fast_hash<hash<u16string>> : std::false_type |
| 6931 | { }; |
| 6932 | |
| 6933 | /// std::hash specialization for u32string. |
| 6934 | template<> |
| 6935 | struct hash<u32string> |
| 6936 | : public __hash_base<size_t, u32string> |
| 6937 | { |
| 6938 | size_t |
| 6939 | operator()(const u32string& __s) const noexcept |
| 6940 | { return std::_Hash_impl::hash(__s.data(), |
| 6941 | __s.length() * sizeof(char32_t)); } |
| 6942 | }; |
| 6943 | |
| 6944 | template<> |
| 6945 | struct __is_fast_hash<hash<u32string>> : std::false_type |
| 6946 | { }; |
| 6947 | |
| 6948 | #if __cplusplus >= 201402L |
| 6949 | |
| 6950 | #define __cpp_lib_string_udls 201304 |
| 6951 | |
| 6952 | inline namespace literals |
| 6953 | { |
| 6954 | inline namespace string_literals |
| 6955 | { |
| 6956 | #pragma GCC diagnostic push |
| 6957 | #pragma GCC diagnostic ignored "-Wliteral-suffix" |
| 6958 | _GLIBCXX_DEFAULT_ABI_TAG |
| 6959 | inline basic_string<char> |
| 6960 | operator""s(const char* __str, size_t __len) |
| 6961 | { return basic_string<char>{__str, __len}; } |
| 6962 | |
| 6963 | #ifdef _GLIBCXX_USE_WCHAR_T |
| 6964 | _GLIBCXX_DEFAULT_ABI_TAG |
| 6965 | inline basic_string<wchar_t> |
| 6966 | operator""s(const wchar_t* __str, size_t __len) |
| 6967 | { return basic_string<wchar_t>{__str, __len}; } |
| 6968 | #endif |
| 6969 | |
| 6970 | #ifdef _GLIBCXX_USE_CHAR8_T |
| 6971 | _GLIBCXX_DEFAULT_ABI_TAG |
| 6972 | inline basic_string<char8_t> |
| 6973 | operator""s(const char8_t* __str, size_t __len) |
| 6974 | { return basic_string<char8_t>{__str, __len}; } |
| 6975 | #endif |
| 6976 | |
| 6977 | _GLIBCXX_DEFAULT_ABI_TAG |
| 6978 | inline basic_string<char16_t> |
| 6979 | operator""s(const char16_t* __str, size_t __len) |
| 6980 | { return basic_string<char16_t>{__str, __len}; } |
| 6981 | |
| 6982 | _GLIBCXX_DEFAULT_ABI_TAG |
| 6983 | inline basic_string<char32_t> |
| 6984 | operator""s(const char32_t* __str, size_t __len) |
| 6985 | { return basic_string<char32_t>{__str, __len}; } |
| 6986 | |
| 6987 | #pragma GCC diagnostic pop |
| 6988 | } // inline namespace string_literals |
| 6989 | } // inline namespace literals |
| 6990 | |
| 6991 | #if __cplusplus >= 201703L |
| 6992 | namespace __detail::__variant |
| 6993 | { |
| 6994 | template<typename> struct _Never_valueless_alt; // see <variant> |
| 6995 | |
| 6996 | // Provide the strong exception-safety guarantee when emplacing a |
| 6997 | // basic_string into a variant, but only if moving the string cannot throw. |
| 6998 | template<typename _Tp, typename _Traits, typename _Alloc> |
| 6999 | struct _Never_valueless_alt<std::basic_string<_Tp, _Traits, _Alloc>> |
| 7000 | : __and_< |
| 7001 | is_nothrow_move_constructible<std::basic_string<_Tp, _Traits, _Alloc>>, |
| 7002 | is_nothrow_move_assignable<std::basic_string<_Tp, _Traits, _Alloc>> |
| 7003 | >::type |
| 7004 | { }; |
| 7005 | } // namespace __detail::__variant |
| 7006 | #endif // C++17 |
| 7007 | #endif // C++14 |
| 7008 | |
| 7009 | _GLIBCXX_END_NAMESPACE_VERSION |
| 7010 | } // namespace std |
| 7011 | |
| 7012 | #endif // C++11 |
| 7013 | |
| 7014 | #endif /* _BASIC_STRING_H */ |
| 7015 |
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