1// -*- C++ -*- 2//===----------------------------------------------------------------------===// 3// 4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 5// See https://llvm.org/LICENSE.txt for license information. 6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 7// 8//===----------------------------------------------------------------------===// 9 10#ifndef _LIBCPP_STRING 11#define _LIBCPP_STRING 12 13/* 14 string synopsis 15 16namespace std 17{ 18 19template <class stateT> 20class fpos 21{ 22private: 23 stateT st; 24public: 25 fpos(streamoff = streamoff()); 26 27 operator streamoff() const; 28 29 stateT state() const; 30 void state(stateT); 31 32 fpos& operator+=(streamoff); 33 fpos operator+ (streamoff) const; 34 fpos& operator-=(streamoff); 35 fpos operator- (streamoff) const; 36}; 37 38template <class stateT> streamoff operator-(const fpos<stateT>& x, const fpos<stateT>& y); 39 40template <class stateT> bool operator==(const fpos<stateT>& x, const fpos<stateT>& y); 41template <class stateT> bool operator!=(const fpos<stateT>& x, const fpos<stateT>& y); 42 43template <class charT> 44struct char_traits 45{ 46 typedef charT char_type; 47 typedef ... int_type; 48 typedef streamoff off_type; 49 typedef streampos pos_type; 50 typedef mbstate_t state_type; 51 52 static void assign(char_type& c1, const char_type& c2) noexcept; 53 static constexpr bool eq(char_type c1, char_type c2) noexcept; 54 static constexpr bool lt(char_type c1, char_type c2) noexcept; 55 56 static int compare(const char_type* s1, const char_type* s2, size_t n); 57 static size_t length(const char_type* s); 58 static const char_type* find(const char_type* s, size_t n, const char_type& a); 59 static char_type* move(char_type* s1, const char_type* s2, size_t n); 60 static char_type* copy(char_type* s1, const char_type* s2, size_t n); 61 static char_type* assign(char_type* s, size_t n, char_type a); 62 63 static constexpr int_type not_eof(int_type c) noexcept; 64 static constexpr char_type to_char_type(int_type c) noexcept; 65 static constexpr int_type to_int_type(char_type c) noexcept; 66 static constexpr bool eq_int_type(int_type c1, int_type c2) noexcept; 67 static constexpr int_type eof() noexcept; 68}; 69 70template <> struct char_traits<char>; 71template <> struct char_traits<wchar_t>; 72template <> struct char_traits<char8_t>; // C++20 73template <> struct char_traits<char16_t>; 74template <> struct char_traits<char32_t>; 75 76template<class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> > 77class basic_string 78{ 79public: 80// types: 81 typedef traits traits_type; 82 typedef typename traits_type::char_type value_type; 83 typedef Allocator allocator_type; 84 typedef typename allocator_type::size_type size_type; 85 typedef typename allocator_type::difference_type difference_type; 86 typedef typename allocator_type::reference reference; 87 typedef typename allocator_type::const_reference const_reference; 88 typedef typename allocator_type::pointer pointer; 89 typedef typename allocator_type::const_pointer const_pointer; 90 typedef implementation-defined iterator; 91 typedef implementation-defined const_iterator; 92 typedef std::reverse_iterator<iterator> reverse_iterator; 93 typedef std::reverse_iterator<const_iterator> const_reverse_iterator; 94 95 static const size_type npos = -1; 96 97 basic_string() 98 noexcept(is_nothrow_default_constructible<allocator_type>::value); // constexpr since C++20 99 explicit basic_string(const allocator_type& a); // constexpr since C++20 100 basic_string(const basic_string& str); // constexpr since C++20 101 basic_string(basic_string&& str) 102 noexcept(is_nothrow_move_constructible<allocator_type>::value); // constexpr since C++20 103 basic_string(const basic_string& str, size_type pos, 104 const allocator_type& a = allocator_type()); // constexpr since C++20 105 basic_string(const basic_string& str, size_type pos, size_type n, 106 const Allocator& a = Allocator()); // constexpr since C++20 107 template<class T> 108 basic_string(const T& t, size_type pos, size_type n, const Allocator& a = Allocator()); // C++17, constexpr since C++20 109 template <class T> 110 explicit basic_string(const T& t, const Allocator& a = Allocator()); // C++17, constexpr since C++20 111 basic_string(const value_type* s, const allocator_type& a = allocator_type()); // constexpr since C++20 112 basic_string(const value_type* s, size_type n, const allocator_type& a = allocator_type()); // constexpr since C++20 113 basic_string(nullptr_t) = delete; // C++2b 114 basic_string(size_type n, value_type c, const allocator_type& a = allocator_type()); // constexpr since C++20 115 template<class InputIterator> 116 basic_string(InputIterator begin, InputIterator end, 117 const allocator_type& a = allocator_type()); // constexpr since C++20 118 basic_string(initializer_list<value_type>, const Allocator& = Allocator()); // constexpr since C++20 119 basic_string(const basic_string&, const Allocator&); // constexpr since C++20 120 basic_string(basic_string&&, const Allocator&); // constexpr since C++20 121 122 ~basic_string(); // constexpr since C++20 123 124 operator basic_string_view<charT, traits>() const noexcept; // constexpr since C++20 125 126 basic_string& operator=(const basic_string& str); // constexpr since C++20 127 template <class T> 128 basic_string& operator=(const T& t); // C++17, constexpr since C++20 129 basic_string& operator=(basic_string&& str) 130 noexcept( 131 allocator_type::propagate_on_container_move_assignment::value || 132 allocator_type::is_always_equal::value ); // C++17, constexpr since C++20 133 basic_string& operator=(const value_type* s); // constexpr since C++20 134 basic_string& operator=(nullptr_t) = delete; // C++2b 135 basic_string& operator=(value_type c); // constexpr since C++20 136 basic_string& operator=(initializer_list<value_type>); // constexpr since C++20 137 138 iterator begin() noexcept; // constexpr since C++20 139 const_iterator begin() const noexcept; // constexpr since C++20 140 iterator end() noexcept; // constexpr since C++20 141 const_iterator end() const noexcept; // constexpr since C++20 142 143 reverse_iterator rbegin() noexcept; // constexpr since C++20 144 const_reverse_iterator rbegin() const noexcept; // constexpr since C++20 145 reverse_iterator rend() noexcept; // constexpr since C++20 146 const_reverse_iterator rend() const noexcept; // constexpr since C++20 147 148 const_iterator cbegin() const noexcept; // constexpr since C++20 149 const_iterator cend() const noexcept; // constexpr since C++20 150 const_reverse_iterator crbegin() const noexcept; // constexpr since C++20 151 const_reverse_iterator crend() const noexcept; // constexpr since C++20 152 153 size_type size() const noexcept; // constexpr since C++20 154 size_type length() const noexcept; // constexpr since C++20 155 size_type max_size() const noexcept; // constexpr since C++20 156 size_type capacity() const noexcept; // constexpr since C++20 157 158 void resize(size_type n, value_type c); // constexpr since C++20 159 void resize(size_type n); // constexpr since C++20 160 161 template<class Operation> 162 constexpr void resize_and_overwrite(size_type n, Operation op); // since C++23 163 164 void reserve(size_type res_arg); // constexpr since C++20 165 void reserve(); // deprecated in C++20 166 void shrink_to_fit(); // constexpr since C++20 167 void clear() noexcept; // constexpr since C++20 168 bool empty() const noexcept; // constexpr since C++20 169 170 const_reference operator[](size_type pos) const; // constexpr since C++20 171 reference operator[](size_type pos); // constexpr since C++20 172 173 const_reference at(size_type n) const; // constexpr since C++20 174 reference at(size_type n); // constexpr since C++20 175 176 basic_string& operator+=(const basic_string& str); // constexpr since C++20 177 template <class T> 178 basic_string& operator+=(const T& t); // C++17, constexpr since C++20 179 basic_string& operator+=(const value_type* s); // constexpr since C++20 180 basic_string& operator+=(value_type c); // constexpr since C++20 181 basic_string& operator+=(initializer_list<value_type>); // constexpr since C++20 182 183 basic_string& append(const basic_string& str); // constexpr since C++20 184 template <class T> 185 basic_string& append(const T& t); // C++17, constexpr since C++20 186 basic_string& append(const basic_string& str, size_type pos, size_type n=npos); // C++14, constexpr since C++20 187 template <class T> 188 basic_string& append(const T& t, size_type pos, size_type n=npos); // C++17, constexpr since C++20 189 basic_string& append(const value_type* s, size_type n); // constexpr since C++20 190 basic_string& append(const value_type* s); // constexpr since C++20 191 basic_string& append(size_type n, value_type c); // constexpr since C++20 192 template<class InputIterator> 193 basic_string& append(InputIterator first, InputIterator last); // constexpr since C++20 194 basic_string& append(initializer_list<value_type>); // constexpr since C++20 195 196 void push_back(value_type c); // constexpr since C++20 197 void pop_back(); // constexpr since C++20 198 reference front(); // constexpr since C++20 199 const_reference front() const; // constexpr since C++20 200 reference back(); // constexpr since C++20 201 const_reference back() const; // constexpr since C++20 202 203 basic_string& assign(const basic_string& str); // constexpr since C++20 204 template <class T> 205 basic_string& assign(const T& t); // C++17, constexpr since C++20 206 basic_string& assign(basic_string&& str); // constexpr since C++20 207 basic_string& assign(const basic_string& str, size_type pos, size_type n=npos); // C++14, constexpr since C++20 208 template <class T> 209 basic_string& assign(const T& t, size_type pos, size_type n=npos); // C++17, constexpr since C++20 210 basic_string& assign(const value_type* s, size_type n); // constexpr since C++20 211 basic_string& assign(const value_type* s); // constexpr since C++20 212 basic_string& assign(size_type n, value_type c); // constexpr since C++20 213 template<class InputIterator> 214 basic_string& assign(InputIterator first, InputIterator last); // constexpr since C++20 215 basic_string& assign(initializer_list<value_type>); // constexpr since C++20 216 217 basic_string& insert(size_type pos1, const basic_string& str); // constexpr since C++20 218 template <class T> 219 basic_string& insert(size_type pos1, const T& t); // constexpr since C++20 220 basic_string& insert(size_type pos1, const basic_string& str, 221 size_type pos2, size_type n); // constexpr since C++20 222 template <class T> 223 basic_string& insert(size_type pos1, const T& t, size_type pos2, size_type n); // C++17, constexpr since C++20 224 basic_string& insert(size_type pos, const value_type* s, size_type n=npos); // C++14, constexpr since C++20 225 basic_string& insert(size_type pos, const value_type* s); // constexpr since C++20 226 basic_string& insert(size_type pos, size_type n, value_type c); // constexpr since C++20 227 iterator insert(const_iterator p, value_type c); // constexpr since C++20 228 iterator insert(const_iterator p, size_type n, value_type c); // constexpr since C++20 229 template<class InputIterator> 230 iterator insert(const_iterator p, InputIterator first, InputIterator last); // constexpr since C++20 231 iterator insert(const_iterator p, initializer_list<value_type>); // constexpr since C++20 232 233 basic_string& erase(size_type pos = 0, size_type n = npos); // constexpr since C++20 234 iterator erase(const_iterator position); // constexpr since C++20 235 iterator erase(const_iterator first, const_iterator last); // constexpr since C++20 236 237 basic_string& replace(size_type pos1, size_type n1, const basic_string& str); // constexpr since C++20 238 template <class T> 239 basic_string& replace(size_type pos1, size_type n1, const T& t); // C++17, constexpr since C++20 240 basic_string& replace(size_type pos1, size_type n1, const basic_string& str, 241 size_type pos2, size_type n2=npos); // C++14, constexpr since C++20 242 template <class T> 243 basic_string& replace(size_type pos1, size_type n1, const T& t, 244 size_type pos2, size_type n); // C++17, constexpr since C++20 245 basic_string& replace(size_type pos, size_type n1, const value_type* s, size_type n2); // constexpr since C++20 246 basic_string& replace(size_type pos, size_type n1, const value_type* s); // constexpr since C++20 247 basic_string& replace(size_type pos, size_type n1, size_type n2, value_type c); // constexpr since C++20 248 basic_string& replace(const_iterator i1, const_iterator i2, const basic_string& str); // constexpr since C++20 249 template <class T> 250 basic_string& replace(const_iterator i1, const_iterator i2, const T& t); // C++17, constexpr since C++20 251 basic_string& replace(const_iterator i1, const_iterator i2, const value_type* s, size_type n); // constexpr since C++20 252 basic_string& replace(const_iterator i1, const_iterator i2, const value_type* s); // constexpr since C++20 253 basic_string& replace(const_iterator i1, const_iterator i2, size_type n, value_type c); // constexpr since C++20 254 template<class InputIterator> 255 basic_string& replace(const_iterator i1, const_iterator i2, InputIterator j1, InputIterator j2); // constexpr since C++20 256 basic_string& replace(const_iterator i1, const_iterator i2, initializer_list<value_type>); // constexpr since C++20 257 258 size_type copy(value_type* s, size_type n, size_type pos = 0) const; // constexpr since C++20 259 basic_string substr(size_type pos = 0, size_type n = npos) const; // constexpr since C++20 260 261 void swap(basic_string& str) 262 noexcept(allocator_traits<allocator_type>::propagate_on_container_swap::value || 263 allocator_traits<allocator_type>::is_always_equal::value); // C++17, constexpr since C++20 264 265 const value_type* c_str() const noexcept; // constexpr since C++20 266 const value_type* data() const noexcept; // constexpr since C++20 267 value_type* data() noexcept; // C++17, constexpr since C++20 268 269 allocator_type get_allocator() const noexcept; // constexpr since C++20 270 271 size_type find(const basic_string& str, size_type pos = 0) const noexcept; // constexpr since C++20 272 template <class T> 273 size_type find(const T& t, size_type pos = 0) const noexcept; // C++17, noexcept as an extension, constexpr since C++20 274 size_type find(const value_type* s, size_type pos, size_type n) const noexcept; // constexpr since C++20 275 size_type find(const value_type* s, size_type pos = 0) const noexcept; // constexpr since C++20 276 size_type find(value_type c, size_type pos = 0) const noexcept; // constexpr since C++20 277 278 size_type rfind(const basic_string& str, size_type pos = npos) const noexcept; // constexpr since C++20 279 template <class T> 280 size_type rfind(const T& t, size_type pos = npos) const noexcept; // C++17, noexcept as an extension, constexpr since C++20 281 size_type rfind(const value_type* s, size_type pos, size_type n) const noexcept; // constexpr since C++20 282 size_type rfind(const value_type* s, size_type pos = npos) const noexcept; // constexpr since C++20 283 size_type rfind(value_type c, size_type pos = npos) const noexcept; // constexpr since C++20 284 285 size_type find_first_of(const basic_string& str, size_type pos = 0) const noexcept; // constexpr since C++20 286 template <class T> 287 size_type find_first_of(const T& t, size_type pos = 0) const noexcept; // C++17, noexcept as an extension, constexpr since C++20 288 size_type find_first_of(const value_type* s, size_type pos, size_type n) const noexcept; // constexpr since C++20 289 size_type find_first_of(const value_type* s, size_type pos = 0) const noexcept; // constexpr since C++20 290 size_type find_first_of(value_type c, size_type pos = 0) const noexcept; // constexpr since C++20 291 292 size_type find_last_of(const basic_string& str, size_type pos = npos) const noexcept; // constexpr since C++20 293 template <class T> 294 size_type find_last_of(const T& t, size_type pos = npos) const noexcept noexcept; // C++17, noexcept as an extension, constexpr since C++20 295 size_type find_last_of(const value_type* s, size_type pos, size_type n) const noexcept; // constexpr since C++20 296 size_type find_last_of(const value_type* s, size_type pos = npos) const noexcept; // constexpr since C++20 297 size_type find_last_of(value_type c, size_type pos = npos) const noexcept; // constexpr since C++20 298 299 size_type find_first_not_of(const basic_string& str, size_type pos = 0) const noexcept; // constexpr since C++20 300 template <class T> 301 size_type find_first_not_of(const T& t, size_type pos = 0) const noexcept; // C++17, noexcept as an extension, constexpr since C++20 302 size_type find_first_not_of(const value_type* s, size_type pos, size_type n) const noexcept; // constexpr since C++20 303 size_type find_first_not_of(const value_type* s, size_type pos = 0) const noexcept; // constexpr since C++20 304 size_type find_first_not_of(value_type c, size_type pos = 0) const noexcept; // constexpr since C++20 305 306 size_type find_last_not_of(const basic_string& str, size_type pos = npos) const noexcept; // constexpr since C++20 307 template <class T> 308 size_type find_last_not_of(const T& t, size_type pos = npos) const noexcept; // C++17, noexcept as an extension, constexpr since C++20 309 size_type find_last_not_of(const value_type* s, size_type pos, size_type n) const noexcept; // constexpr since C++20 310 size_type find_last_not_of(const value_type* s, size_type pos = npos) const noexcept; // constexpr since C++20 311 size_type find_last_not_of(value_type c, size_type pos = npos) const noexcept; // constexpr since C++20 312 313 int compare(const basic_string& str) const noexcept; // constexpr since C++20 314 template <class T> 315 int compare(const T& t) const noexcept; // C++17, noexcept as an extension, constexpr since C++20 316 int compare(size_type pos1, size_type n1, const basic_string& str) const; // constexpr since C++20 317 template <class T> 318 int compare(size_type pos1, size_type n1, const T& t) const; // C++17, constexpr since C++20 319 int compare(size_type pos1, size_type n1, const basic_string& str, 320 size_type pos2, size_type n2=npos) const; // C++14, constexpr since C++20 321 template <class T> 322 int compare(size_type pos1, size_type n1, const T& t, 323 size_type pos2, size_type n2=npos) const; // C++17, constexpr since C++20 324 int compare(const value_type* s) const noexcept; // constexpr since C++20 325 int compare(size_type pos1, size_type n1, const value_type* s) const; // constexpr since C++20 326 int compare(size_type pos1, size_type n1, const value_type* s, size_type n2) const; // constexpr since C++20 327 328 constexpr bool starts_with(basic_string_view<charT, traits> sv) const noexcept; // C++20 329 constexpr bool starts_with(charT c) const noexcept; // C++20 330 constexpr bool starts_with(const charT* s) const; // C++20 331 constexpr bool ends_with(basic_string_view<charT, traits> sv) const noexcept; // C++20 332 constexpr bool ends_with(charT c) const noexcept; // C++20 333 constexpr bool ends_with(const charT* s) const; // C++20 334 335 constexpr bool contains(basic_string_view<charT, traits> sv) const noexcept; // C++2b 336 constexpr bool contains(charT c) const noexcept; // C++2b 337 constexpr bool contains(const charT* s) const; // C++2b 338}; 339 340template<class InputIterator, 341 class Allocator = allocator<typename iterator_traits<InputIterator>::value_type>> 342basic_string(InputIterator, InputIterator, Allocator = Allocator()) 343 -> basic_string<typename iterator_traits<InputIterator>::value_type, 344 char_traits<typename iterator_traits<InputIterator>::value_type>, 345 Allocator>; // C++17 346 347template<class charT, class traits, class Allocator> 348basic_string<charT, traits, Allocator> 349operator+(const basic_string<charT, traits, Allocator>& lhs, 350 const basic_string<charT, traits, Allocator>& rhs); // constexpr since C++20 351 352template<class charT, class traits, class Allocator> 353basic_string<charT, traits, Allocator> 354operator+(const charT* lhs , const basic_string<charT,traits,Allocator>&rhs); // constexpr since C++20 355 356template<class charT, class traits, class Allocator> 357basic_string<charT, traits, Allocator> 358operator+(charT lhs, const basic_string<charT,traits,Allocator>& rhs); // constexpr since C++20 359 360template<class charT, class traits, class Allocator> 361basic_string<charT, traits, Allocator> 362operator+(const basic_string<charT, traits, Allocator>& lhs, const charT* rhs); // constexpr since C++20 363 364template<class charT, class traits, class Allocator> 365basic_string<charT, traits, Allocator> 366operator+(const basic_string<charT, traits, Allocator>& lhs, charT rhs); // constexpr since C++20 367 368template<class charT, class traits, class Allocator> 369bool operator==(const basic_string<charT, traits, Allocator>& lhs, 370 const basic_string<charT, traits, Allocator>& rhs) noexcept; // constexpr since C++20 371 372template<class charT, class traits, class Allocator> 373bool operator==(const charT* lhs, const basic_string<charT, traits, Allocator>& rhs) noexcept; // constexpr since C++20 374 375template<class charT, class traits, class Allocator> 376bool operator==(const basic_string<charT,traits,Allocator>& lhs, const charT* rhs) noexcept; // constexpr since C++20 377 378template<class charT, class traits, class Allocator> 379bool operator!=(const basic_string<charT,traits,Allocator>& lhs, 380 const basic_string<charT, traits, Allocator>& rhs) noexcept; // constexpr since C++20 381 382template<class charT, class traits, class Allocator> 383bool operator!=(const charT* lhs, const basic_string<charT, traits, Allocator>& rhs) noexcept; // constexpr since C++20 384 385template<class charT, class traits, class Allocator> 386bool operator!=(const basic_string<charT, traits, Allocator>& lhs, const charT* rhs) noexcept; // constexpr since C++20 387 388template<class charT, class traits, class Allocator> 389bool operator< (const basic_string<charT, traits, Allocator>& lhs, 390 const basic_string<charT, traits, Allocator>& rhs) noexcept; // constexpr since C++20 391 392template<class charT, class traits, class Allocator> 393bool operator< (const basic_string<charT, traits, Allocator>& lhs, const charT* rhs) noexcept; // constexpr since C++20 394 395template<class charT, class traits, class Allocator> 396bool operator< (const charT* lhs, const basic_string<charT, traits, Allocator>& rhs) noexcept; // constexpr since C++20 397 398template<class charT, class traits, class Allocator> 399bool operator> (const basic_string<charT, traits, Allocator>& lhs, 400 const basic_string<charT, traits, Allocator>& rhs) noexcept; // constexpr since C++20 401 402template<class charT, class traits, class Allocator> 403bool operator> (const basic_string<charT, traits, Allocator>& lhs, const charT* rhs) noexcept; // constexpr since C++20 404 405template<class charT, class traits, class Allocator> 406bool operator> (const charT* lhs, const basic_string<charT, traits, Allocator>& rhs) noexcept; // constexpr since C++20 407 408template<class charT, class traits, class Allocator> 409bool operator<=(const basic_string<charT, traits, Allocator>& lhs, 410 const basic_string<charT, traits, Allocator>& rhs) noexcept; // constexpr since C++20 411 412template<class charT, class traits, class Allocator> 413bool operator<=(const basic_string<charT, traits, Allocator>& lhs, const charT* rhs) noexcept; // constexpr since C++20 414 415template<class charT, class traits, class Allocator> 416bool operator<=(const charT* lhs, const basic_string<charT, traits, Allocator>& rhs) noexcept; // constexpr since C++20 417 418template<class charT, class traits, class Allocator> 419bool operator>=(const basic_string<charT, traits, Allocator>& lhs, 420 const basic_string<charT, traits, Allocator>& rhs) noexcept; // constexpr since C++20 421 422template<class charT, class traits, class Allocator> 423bool operator>=(const basic_string<charT, traits, Allocator>& lhs, const charT* rhs) noexcept; // constexpr since C++20 424 425template<class charT, class traits, class Allocator> 426bool operator>=(const charT* lhs, const basic_string<charT, traits, Allocator>& rhs) noexcept; // constexpr since C++20 427 428template<class charT, class traits, class Allocator> 429void swap(basic_string<charT, traits, Allocator>& lhs, 430 basic_string<charT, traits, Allocator>& rhs) 431 noexcept(noexcept(lhs.swap(rhs))); // constexpr since C++20 432 433template<class charT, class traits, class Allocator> 434basic_istream<charT, traits>& 435operator>>(basic_istream<charT, traits>& is, basic_string<charT, traits, Allocator>& str); 436 437template<class charT, class traits, class Allocator> 438basic_ostream<charT, traits>& 439operator<<(basic_ostream<charT, traits>& os, const basic_string<charT, traits, Allocator>& str); 440 441template<class charT, class traits, class Allocator> 442basic_istream<charT, traits>& 443getline(basic_istream<charT, traits>& is, basic_string<charT, traits, Allocator>& str, 444 charT delim); 445 446template<class charT, class traits, class Allocator> 447basic_istream<charT, traits>& 448getline(basic_istream<charT, traits>& is, basic_string<charT, traits, Allocator>& str); 449 450template<class charT, class traits, class Allocator, class U> 451typename basic_string<charT, traits, Allocator>::size_type 452erase(basic_string<charT, traits, Allocator>& c, const U& value); // C++20 453template<class charT, class traits, class Allocator, class Predicate> 454typename basic_string<charT, traits, Allocator>::size_type 455erase_if(basic_string<charT, traits, Allocator>& c, Predicate pred); // C++20 456 457typedef basic_string<char> string; 458typedef basic_string<wchar_t> wstring; 459typedef basic_string<char8_t> u8string; // C++20 460typedef basic_string<char16_t> u16string; 461typedef basic_string<char32_t> u32string; 462 463int stoi (const string& str, size_t* idx = nullptr, int base = 10); 464long stol (const string& str, size_t* idx = nullptr, int base = 10); 465unsigned long stoul (const string& str, size_t* idx = nullptr, int base = 10); 466long long stoll (const string& str, size_t* idx = nullptr, int base = 10); 467unsigned long long stoull(const string& str, size_t* idx = nullptr, int base = 10); 468 469float stof (const string& str, size_t* idx = nullptr); 470double stod (const string& str, size_t* idx = nullptr); 471long double stold(const string& str, size_t* idx = nullptr); 472 473string to_string(int val); 474string to_string(unsigned val); 475string to_string(long val); 476string to_string(unsigned long val); 477string to_string(long long val); 478string to_string(unsigned long long val); 479string to_string(float val); 480string to_string(double val); 481string to_string(long double val); 482 483int stoi (const wstring& str, size_t* idx = nullptr, int base = 10); 484long stol (const wstring& str, size_t* idx = nullptr, int base = 10); 485unsigned long stoul (const wstring& str, size_t* idx = nullptr, int base = 10); 486long long stoll (const wstring& str, size_t* idx = nullptr, int base = 10); 487unsigned long long stoull(const wstring& str, size_t* idx = nullptr, int base = 10); 488 489float stof (const wstring& str, size_t* idx = nullptr); 490double stod (const wstring& str, size_t* idx = nullptr); 491long double stold(const wstring& str, size_t* idx = nullptr); 492 493wstring to_wstring(int val); 494wstring to_wstring(unsigned val); 495wstring to_wstring(long val); 496wstring to_wstring(unsigned long val); 497wstring to_wstring(long long val); 498wstring to_wstring(unsigned long long val); 499wstring to_wstring(float val); 500wstring to_wstring(double val); 501wstring to_wstring(long double val); 502 503template <> struct hash<string>; 504template <> struct hash<u8string>; // C++20 505template <> struct hash<u16string>; 506template <> struct hash<u32string>; 507template <> struct hash<wstring>; 508 509basic_string<char> operator "" s( const char *str, size_t len ); // C++14, constexpr since C++20 510basic_string<wchar_t> operator "" s( const wchar_t *str, size_t len ); // C++14, constexpr since C++20 511constexpr basic_string<char8_t> operator "" s( const char8_t *str, size_t len ); // C++20 512basic_string<char16_t> operator "" s( const char16_t *str, size_t len ); // C++14, constexpr since C++20 513basic_string<char32_t> operator "" s( const char32_t *str, size_t len ); // C++14, constexpr since C++20 514 515} // std 516 517*/ 518 519#include <__algorithm/max.h> 520#include <__algorithm/min.h> 521#include <__algorithm/remove.h> 522#include <__algorithm/remove_if.h> 523#include <__assert> // all public C++ headers provide the assertion handler 524#include <__config> 525#include <__debug> 526#include <__format/enable_insertable.h> 527#include <__functional/unary_function.h> 528#include <__ios/fpos.h> 529#include <__iterator/wrap_iter.h> 530#include <__memory/allocate_at_least.h> 531#include <__utility/auto_cast.h> 532#include <__utility/move.h> 533#include <__utility/swap.h> 534#include <__utility/unreachable.h> 535#include <climits> 536#include <compare> 537#include <cstdio> // EOF 538#include <cstdlib> 539#include <cstring> 540#include <initializer_list> 541#include <iosfwd> 542#include <iterator> 543#include <limits> 544#include <memory> 545#include <stdexcept> 546#include <string_view> 547#include <type_traits> 548#include <version> 549 550// TODO: remove these headers 551#include <new> 552#include <typeinfo> 553 554#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 555# include <cwchar> 556#endif 557 558#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS 559# include <cstdint> 560#endif 561 562#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 563# pragma GCC system_header 564#endif 565 566_LIBCPP_PUSH_MACROS 567#include <__undef_macros> 568 569 570_LIBCPP_BEGIN_NAMESPACE_STD 571 572// basic_string 573 574template<class _CharT, class _Traits, class _Allocator> 575basic_string<_CharT, _Traits, _Allocator> 576_LIBCPP_CONSTEXPR_AFTER_CXX17 577operator+(const basic_string<_CharT, _Traits, _Allocator>& __x, 578 const basic_string<_CharT, _Traits, _Allocator>& __y); 579 580template<class _CharT, class _Traits, class _Allocator> 581_LIBCPP_CONSTEXPR_AFTER_CXX17 582basic_string<_CharT, _Traits, _Allocator> 583operator+(const _CharT* __x, const basic_string<_CharT,_Traits,_Allocator>& __y); 584 585template<class _CharT, class _Traits, class _Allocator> 586_LIBCPP_CONSTEXPR_AFTER_CXX17 587basic_string<_CharT, _Traits, _Allocator> 588operator+(_CharT __x, const basic_string<_CharT,_Traits,_Allocator>& __y); 589 590template<class _CharT, class _Traits, class _Allocator> 591inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 592basic_string<_CharT, _Traits, _Allocator> 593operator+(const basic_string<_CharT, _Traits, _Allocator>& __x, const _CharT* __y); 594 595template<class _CharT, class _Traits, class _Allocator> 596_LIBCPP_CONSTEXPR_AFTER_CXX17 597basic_string<_CharT, _Traits, _Allocator> 598operator+(const basic_string<_CharT, _Traits, _Allocator>& __x, _CharT __y); 599 600_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS string operator+<char, char_traits<char>, allocator<char> >(char const*, string const&)) 601 602template <class _Iter> 603struct __string_is_trivial_iterator : public false_type {}; 604 605template <class _Tp> 606struct __string_is_trivial_iterator<_Tp*> 607 : public is_arithmetic<_Tp> {}; 608 609template <class _Iter> 610struct __string_is_trivial_iterator<__wrap_iter<_Iter> > 611 : public __string_is_trivial_iterator<_Iter> {}; 612 613template <class _CharT, class _Traits, class _Tp> 614struct __can_be_converted_to_string_view : public _BoolConstant< 615 is_convertible<const _Tp&, basic_string_view<_CharT, _Traits> >::value && 616 !is_convertible<const _Tp&, const _CharT*>::value 617 > {}; 618 619#ifndef _LIBCPP_HAS_NO_CHAR8_T 620typedef basic_string<char8_t> u8string; 621#endif 622 623#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS 624typedef basic_string<char16_t> u16string; 625typedef basic_string<char32_t> u32string; 626#endif 627 628struct __uninitialized_size_tag {}; 629 630template<class _CharT, class _Traits, class _Allocator> 631class 632 _LIBCPP_TEMPLATE_VIS 633#ifndef _LIBCPP_HAS_NO_CHAR8_T 634 _LIBCPP_PREFERRED_NAME(u8string) 635#endif 636#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS 637 _LIBCPP_PREFERRED_NAME(u16string) 638 _LIBCPP_PREFERRED_NAME(u32string) 639#endif 640 basic_string 641{ 642public: 643 typedef basic_string __self; 644 typedef basic_string_view<_CharT, _Traits> __self_view; 645 typedef _Traits traits_type; 646 typedef _CharT value_type; 647 typedef _Allocator allocator_type; 648 typedef allocator_traits<allocator_type> __alloc_traits; 649 typedef typename __alloc_traits::size_type size_type; 650 typedef typename __alloc_traits::difference_type difference_type; 651 typedef value_type& reference; 652 typedef const value_type& const_reference; 653 typedef typename __alloc_traits::pointer pointer; 654 typedef typename __alloc_traits::const_pointer const_pointer; 655 656 static_assert((!is_array<value_type>::value), "Character type of basic_string must not be an array"); 657 static_assert(( is_standard_layout<value_type>::value), "Character type of basic_string must be standard-layout"); 658 static_assert(( is_trivial<value_type>::value), "Character type of basic_string must be trivial"); 659 static_assert(( is_same<_CharT, typename traits_type::char_type>::value), 660 "traits_type::char_type must be the same type as CharT"); 661 static_assert(( is_same<typename allocator_type::value_type, value_type>::value), 662 "Allocator::value_type must be same type as value_type"); 663 664 typedef __wrap_iter<pointer> iterator; 665 typedef __wrap_iter<const_pointer> const_iterator; 666 typedef std::reverse_iterator<iterator> reverse_iterator; 667 typedef std::reverse_iterator<const_iterator> const_reverse_iterator; 668 669private: 670 static_assert(CHAR_BIT == 8, "This implementation assumes that one byte contains 8 bits"); 671 672#ifdef _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT 673 674 struct __long 675 { 676 pointer __data_; 677 size_type __size_; 678 size_type __cap_ : sizeof(size_type) * CHAR_BIT - 1; 679 size_type __is_long_ : 1; 680 }; 681 682 enum {__min_cap = (sizeof(__long) - 1)/sizeof(value_type) > 2 ? 683 (sizeof(__long) - 1)/sizeof(value_type) : 2}; 684 685 struct __short 686 { 687 value_type __data_[__min_cap]; 688 unsigned char __padding_[sizeof(value_type) - 1]; 689 size_type __size_ : 7; 690 size_type __is_long_ : 1; 691 }; 692 693// The __endian_factor is required because the field we use to store the size 694// has one fewer bit than it would if it were not a bitfield. 695// 696// If the LSB is used to store the short-flag in the short string representation, 697// we have to multiply the size by two when it is stored and divide it by two when 698// it is loaded to make sure that we always store an even number. In the long string 699// representation, we can ignore this because we can assume that we always allocate 700// an even amount of value_types. 701// 702// If the MSB is used for the short-flag, the max_size() is numeric_limits<size_type>::max() / 2. 703// This does not impact the short string representation, since we never need the MSB 704// for representing the size of a short string anyway. 705 706#ifdef _LIBCPP_BIG_ENDIAN 707 static const size_type __endian_factor = 2; 708#else 709 static const size_type __endian_factor = 1; 710#endif 711 712#else // _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT 713 714#ifdef _LIBCPP_BIG_ENDIAN 715 static const size_type __endian_factor = 1; 716#else 717 static const size_type __endian_factor = 2; 718#endif 719 720 struct __long 721 { 722 size_type __is_long_ : 1; 723 size_type __cap_ : sizeof(size_type) * CHAR_BIT - 1; 724 size_type __size_; 725 pointer __data_; 726 }; 727 728 enum {__min_cap = (sizeof(__long) - 1)/sizeof(value_type) > 2 ? 729 (sizeof(__long) - 1)/sizeof(value_type) : 2}; 730 731 struct __short 732 { 733 size_type __is_long_ : 1; 734 size_type __size_ : 7; 735 char __padding_[sizeof(value_type) - 1]; 736 value_type __data_[__min_cap]; 737 }; 738 739#endif // _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT 740 741 union __ulx{__long __lx; __short __lxx;}; 742 743 enum {__n_words = sizeof(__ulx) / sizeof(size_type)}; 744 745 struct __raw 746 { 747 size_type __words[__n_words]; 748 }; 749 750 struct __rep 751 { 752 union 753 { 754 __long __l; 755 __short __s; 756 __raw __r; 757 }; 758 }; 759 760 __compressed_pair<__rep, allocator_type> __r_; 761 762 // Construct a string with the given allocator and enough storage to hold `__size` characters, but 763 // don't initialize the characters. The contents of the string, including the null terminator, must be 764 // initialized separately. 765 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 766 explicit basic_string(__uninitialized_size_tag, size_type __size, const allocator_type& __a) 767 : __r_(__default_init_tag(), __a) { 768 if (__size > max_size()) 769 __throw_length_error(); 770 if (__fits_in_sso(__size)) { 771 __zero(); 772 __set_short_size(__size); 773 } else { 774 auto __capacity = __recommend(__size) + 1; 775 auto __allocation = __alloc_traits::allocate(__alloc(), __capacity); 776 __begin_lifetime(__allocation, __capacity); 777 __set_long_cap(__capacity); 778 __set_long_pointer(__allocation); 779 __set_long_size(__size); 780 } 781 std::__debug_db_insert_c(this); 782 } 783 784public: 785 _LIBCPP_TEMPLATE_DATA_VIS 786 static const size_type npos = -1; 787 788 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string() 789 _NOEXCEPT_(is_nothrow_default_constructible<allocator_type>::value); 790 791 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 explicit basic_string(const allocator_type& __a) 792#if _LIBCPP_STD_VER <= 14 793 _NOEXCEPT_(is_nothrow_copy_constructible<allocator_type>::value); 794#else 795 _NOEXCEPT; 796#endif 797 798 _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string(const basic_string& __str); 799 _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string(const basic_string& __str, const allocator_type& __a); 800 801#ifndef _LIBCPP_CXX03_LANG 802 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 803 basic_string(basic_string&& __str) 804#if _LIBCPP_STD_VER <= 14 805 _NOEXCEPT_(is_nothrow_move_constructible<allocator_type>::value); 806#else 807 _NOEXCEPT; 808#endif 809 810 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 811 basic_string(basic_string&& __str, const allocator_type& __a); 812#endif // _LIBCPP_CXX03_LANG 813 814 template <class = __enable_if_t<__is_allocator<_Allocator>::value, nullptr_t> > 815 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 816 basic_string(const _CharT* __s) : __r_(__default_init_tag(), __default_init_tag()) { 817 _LIBCPP_ASSERT(__s != nullptr, "basic_string(const char*) detected nullptr"); 818 __init(__s, traits_type::length(__s)); 819 std::__debug_db_insert_c(this); 820 } 821 822 template <class = __enable_if_t<__is_allocator<_Allocator>::value, nullptr_t> > 823 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 824 basic_string(const _CharT* __s, const _Allocator& __a); 825 826#if _LIBCPP_STD_VER > 20 827 basic_string(nullptr_t) = delete; 828#endif 829 830 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 831 basic_string(const _CharT* __s, size_type __n); 832 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 833 basic_string(const _CharT* __s, size_type __n, const _Allocator& __a); 834 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 835 basic_string(size_type __n, _CharT __c); 836 837 template <class = __enable_if_t<__is_allocator<_Allocator>::value, nullptr_t> > 838 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 839 basic_string(size_type __n, _CharT __c, const _Allocator& __a); 840 841 _LIBCPP_CONSTEXPR_AFTER_CXX17 842 basic_string(const basic_string& __str, size_type __pos, size_type __n, 843 const _Allocator& __a = _Allocator()); 844 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 845 basic_string(const basic_string& __str, size_type __pos, 846 const _Allocator& __a = _Allocator()); 847 848 template<class _Tp, class = __enable_if_t<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value && !__is_same_uncvref<_Tp, basic_string>::value> > 849 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_AFTER_CXX17 850 basic_string(const _Tp& __t, size_type __pos, size_type __n, 851 const allocator_type& __a = allocator_type()); 852 853 template<class _Tp, class = __enable_if_t<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value && 854 !__is_same_uncvref<_Tp, basic_string>::value> > 855 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_AFTER_CXX17 856 explicit basic_string(const _Tp& __t); 857 858 template<class _Tp, class = __enable_if_t<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value && !__is_same_uncvref<_Tp, basic_string>::value> > 859 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_AFTER_CXX17 860 explicit basic_string(const _Tp& __t, const allocator_type& __a); 861 862 template<class _InputIterator, class = __enable_if_t<__is_cpp17_input_iterator<_InputIterator>::value> > 863 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 864 basic_string(_InputIterator __first, _InputIterator __last); 865 template<class _InputIterator, class = __enable_if_t<__is_cpp17_input_iterator<_InputIterator>::value> > 866 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 867 basic_string(_InputIterator __first, _InputIterator __last, const allocator_type& __a); 868#ifndef _LIBCPP_CXX03_LANG 869 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 870 basic_string(initializer_list<_CharT> __il); 871 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 872 basic_string(initializer_list<_CharT> __il, const _Allocator& __a); 873#endif // _LIBCPP_CXX03_LANG 874 875 inline _LIBCPP_CONSTEXPR_AFTER_CXX17 ~basic_string(); 876 877 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 878 operator __self_view() const _NOEXCEPT { return __self_view(data(), size()); } 879 880 _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string& operator=(const basic_string& __str); 881 882 template <class _Tp, class = __enable_if_t<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value && 883 !__is_same_uncvref<_Tp, basic_string>::value> > 884 _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string& operator=(const _Tp& __t) { 885 __self_view __sv = __t; 886 return assign(__sv); 887 } 888 889#ifndef _LIBCPP_CXX03_LANG 890 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 891 basic_string& operator=(basic_string&& __str) 892 _NOEXCEPT_((__noexcept_move_assign_container<_Allocator, __alloc_traits>::value)); 893 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 894 basic_string& operator=(initializer_list<value_type> __il) {return assign(__il.begin(), __il.size());} 895#endif 896 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 897 basic_string& operator=(const value_type* __s) {return assign(__s);} 898#if _LIBCPP_STD_VER > 20 899 basic_string& operator=(nullptr_t) = delete; 900#endif 901 _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string& operator=(value_type __c); 902 903#if _LIBCPP_DEBUG_LEVEL == 2 904 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 905 iterator begin() _NOEXCEPT 906 {return iterator(this, __get_pointer());} 907 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 908 const_iterator begin() const _NOEXCEPT 909 {return const_iterator(this, __get_pointer());} 910 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 911 iterator end() _NOEXCEPT 912 {return iterator(this, __get_pointer() + size());} 913 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 914 const_iterator end() const _NOEXCEPT 915 {return const_iterator(this, __get_pointer() + size());} 916#else 917 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 918 iterator begin() _NOEXCEPT 919 {return iterator(__get_pointer());} 920 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 921 const_iterator begin() const _NOEXCEPT 922 {return const_iterator(__get_pointer());} 923 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 924 iterator end() _NOEXCEPT 925 {return iterator(__get_pointer() + size());} 926 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 927 const_iterator end() const _NOEXCEPT 928 {return const_iterator(__get_pointer() + size());} 929#endif // _LIBCPP_DEBUG_LEVEL == 2 930 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 931 reverse_iterator rbegin() _NOEXCEPT 932 {return reverse_iterator(end());} 933 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 934 const_reverse_iterator rbegin() const _NOEXCEPT 935 {return const_reverse_iterator(end());} 936 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 937 reverse_iterator rend() _NOEXCEPT 938 {return reverse_iterator(begin());} 939 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 940 const_reverse_iterator rend() const _NOEXCEPT 941 {return const_reverse_iterator(begin());} 942 943 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 944 const_iterator cbegin() const _NOEXCEPT 945 {return begin();} 946 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 947 const_iterator cend() const _NOEXCEPT 948 {return end();} 949 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 950 const_reverse_iterator crbegin() const _NOEXCEPT 951 {return rbegin();} 952 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 953 const_reverse_iterator crend() const _NOEXCEPT 954 {return rend();} 955 956 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 size_type size() const _NOEXCEPT 957 {return __is_long() ? __get_long_size() : __get_short_size();} 958 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 size_type length() const _NOEXCEPT {return size();} 959 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 size_type max_size() const _NOEXCEPT; 960 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 size_type capacity() const _NOEXCEPT { 961 return (__is_long() ? __get_long_cap() : static_cast<size_type>(__min_cap)) - 1; 962 } 963 964 _LIBCPP_CONSTEXPR_AFTER_CXX17 void resize(size_type __n, value_type __c); 965 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 void resize(size_type __n) { resize(__n, value_type()); } 966 967 _LIBCPP_CONSTEXPR_AFTER_CXX17 void reserve(size_type __requested_capacity); 968 969#if _LIBCPP_STD_VER > 20 970 template <class _Op> 971 _LIBCPP_HIDE_FROM_ABI constexpr 972 void resize_and_overwrite(size_type __n, _Op __op) { 973 __resize_default_init(__n); 974 __erase_to_end(std::move(__op)(data(), _LIBCPP_AUTO_CAST(__n))); 975 } 976#endif 977 978 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 void __resize_default_init(size_type __n); 979 980 _LIBCPP_DEPRECATED_IN_CXX20 _LIBCPP_HIDE_FROM_ABI void reserve() _NOEXCEPT { shrink_to_fit(); } 981 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 void shrink_to_fit() _NOEXCEPT; 982 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 void clear() _NOEXCEPT; 983 984 _LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 985 bool empty() const _NOEXCEPT {return size() == 0;} 986 987 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 988 const_reference operator[](size_type __pos) const _NOEXCEPT; 989 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 reference operator[](size_type __pos) _NOEXCEPT; 990 991 _LIBCPP_CONSTEXPR_AFTER_CXX17 const_reference at(size_type __n) const; 992 _LIBCPP_CONSTEXPR_AFTER_CXX17 reference at(size_type __n); 993 994 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string& operator+=(const basic_string& __str) { 995 return append(__str); 996 } 997 998 template <class _Tp> 999 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_AFTER_CXX17 1000 __enable_if_t 1001 < 1002 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value 1003 && !__is_same_uncvref<_Tp, basic_string >::value, 1004 basic_string& 1005 > 1006 operator+=(const _Tp& __t) { 1007 __self_view __sv = __t; return append(__sv); 1008 } 1009 1010 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string& operator+=(const value_type* __s) { 1011 return append(__s); 1012 } 1013 1014 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string& operator+=(value_type __c) { 1015 push_back(__c); 1016 return *this; 1017 } 1018 1019#ifndef _LIBCPP_CXX03_LANG 1020 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1021 basic_string& operator+=(initializer_list<value_type> __il) { return append(__il); } 1022#endif // _LIBCPP_CXX03_LANG 1023 1024 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1025 basic_string& append(const basic_string& __str); 1026 1027 template <class _Tp> 1028 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_AFTER_CXX17 1029 __enable_if_t< 1030 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value 1031 && !__is_same_uncvref<_Tp, basic_string>::value, 1032 basic_string& 1033 > 1034 append(const _Tp& __t) { __self_view __sv = __t; return append(__sv.data(), __sv.size()); } 1035 _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string& append(const basic_string& __str, size_type __pos, size_type __n=npos); 1036 1037 template <class _Tp> 1038 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_AFTER_CXX17 1039 __enable_if_t 1040 < 1041 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value 1042 && !__is_same_uncvref<_Tp, basic_string>::value, 1043 basic_string& 1044 > 1045 append(const _Tp& __t, size_type __pos, size_type __n=npos); 1046 _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string& append(const value_type* __s, size_type __n); 1047 _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string& append(const value_type* __s); 1048 _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string& append(size_type __n, value_type __c); 1049 1050 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1051 void __append_default_init(size_type __n); 1052 1053 template<class _InputIterator> 1054 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1055 __enable_if_t 1056 < 1057 __is_exactly_cpp17_input_iterator<_InputIterator>::value, 1058 basic_string& 1059 > 1060 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1061 append(_InputIterator __first, _InputIterator __last) { 1062 const basic_string __temp(__first, __last, __alloc()); 1063 append(__temp.data(), __temp.size()); 1064 return *this; 1065 } 1066 template<class _ForwardIterator> 1067 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1068 __enable_if_t 1069 < 1070 __is_cpp17_forward_iterator<_ForwardIterator>::value, 1071 basic_string& 1072 > 1073 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1074 append(_ForwardIterator __first, _ForwardIterator __last); 1075 1076#ifndef _LIBCPP_CXX03_LANG 1077 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1078 basic_string& append(initializer_list<value_type> __il) {return append(__il.begin(), __il.size());} 1079#endif // _LIBCPP_CXX03_LANG 1080 1081 _LIBCPP_CONSTEXPR_AFTER_CXX17 void push_back(value_type __c); 1082 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 void pop_back(); 1083 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 reference front() _NOEXCEPT; 1084 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 const_reference front() const _NOEXCEPT; 1085 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 reference back() _NOEXCEPT; 1086 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 const_reference back() const _NOEXCEPT; 1087 1088 template <class _Tp> 1089 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_AFTER_CXX17 1090 __enable_if_t 1091 < 1092 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1093 basic_string& 1094 > 1095 assign(const _Tp & __t) { __self_view __sv = __t; return assign(__sv.data(), __sv.size()); } 1096 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1097 basic_string& assign(const basic_string& __str) { return *this = __str; } 1098#ifndef _LIBCPP_CXX03_LANG 1099 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1100 basic_string& assign(basic_string&& __str) 1101 _NOEXCEPT_((__noexcept_move_assign_container<_Allocator, __alloc_traits>::value)) 1102 {*this = std::move(__str); return *this;} 1103#endif 1104 _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string& assign(const basic_string& __str, size_type __pos, size_type __n=npos); 1105 template <class _Tp> 1106 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_AFTER_CXX17 1107 __enable_if_t 1108 < 1109 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value 1110 && !__is_same_uncvref<_Tp, basic_string>::value, 1111 basic_string& 1112 > 1113 assign(const _Tp & __t, size_type __pos, size_type __n=npos); 1114 _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string& assign(const value_type* __s, size_type __n); 1115 _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string& assign(const value_type* __s); 1116 _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string& assign(size_type __n, value_type __c); 1117 template<class _InputIterator> 1118 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_AFTER_CXX17 1119 __enable_if_t 1120 < 1121 __is_exactly_cpp17_input_iterator<_InputIterator>::value, 1122 basic_string& 1123 > 1124 assign(_InputIterator __first, _InputIterator __last); 1125 template<class _ForwardIterator> 1126 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_AFTER_CXX17 1127 __enable_if_t 1128 < 1129 __is_cpp17_forward_iterator<_ForwardIterator>::value, 1130 basic_string& 1131 > 1132 assign(_ForwardIterator __first, _ForwardIterator __last); 1133#ifndef _LIBCPP_CXX03_LANG 1134 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1135 basic_string& assign(initializer_list<value_type> __il) {return assign(__il.begin(), __il.size());} 1136#endif // _LIBCPP_CXX03_LANG 1137 1138 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1139 basic_string& insert(size_type __pos1, const basic_string& __str); 1140 1141 template <class _Tp> 1142 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_AFTER_CXX17 1143 __enable_if_t 1144 < 1145 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1146 basic_string& 1147 > 1148 insert(size_type __pos1, const _Tp& __t) 1149 { __self_view __sv = __t; return insert(__pos1, __sv.data(), __sv.size()); } 1150 1151 template <class _Tp> 1152 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_AFTER_CXX17 1153 __enable_if_t 1154 < 1155 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value && !__is_same_uncvref<_Tp, basic_string>::value, 1156 basic_string& 1157 > 1158 insert(size_type __pos1, const _Tp& __t, size_type __pos2, size_type __n=npos); 1159 _LIBCPP_CONSTEXPR_AFTER_CXX17 1160 basic_string& insert(size_type __pos1, const basic_string& __str, size_type __pos2, size_type __n=npos); 1161 _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string& insert(size_type __pos, const value_type* __s, size_type __n); 1162 _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string& insert(size_type __pos, const value_type* __s); 1163 _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string& insert(size_type __pos, size_type __n, value_type __c); 1164 _LIBCPP_CONSTEXPR_AFTER_CXX17 iterator insert(const_iterator __pos, value_type __c); 1165 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1166 iterator insert(const_iterator __pos, size_type __n, value_type __c); 1167 template<class _InputIterator> 1168 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_AFTER_CXX17 1169 __enable_if_t 1170 < 1171 __is_exactly_cpp17_input_iterator<_InputIterator>::value, 1172 iterator 1173 > 1174 insert(const_iterator __pos, _InputIterator __first, _InputIterator __last); 1175 template<class _ForwardIterator> 1176 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_AFTER_CXX17 1177 __enable_if_t 1178 < 1179 __is_cpp17_forward_iterator<_ForwardIterator>::value, 1180 iterator 1181 > 1182 insert(const_iterator __pos, _ForwardIterator __first, _ForwardIterator __last); 1183#ifndef _LIBCPP_CXX03_LANG 1184 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1185 iterator insert(const_iterator __pos, initializer_list<value_type> __il) 1186 {return insert(__pos, __il.begin(), __il.end());} 1187#endif // _LIBCPP_CXX03_LANG 1188 1189 _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string& erase(size_type __pos = 0, size_type __n = npos); 1190 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1191 iterator erase(const_iterator __pos); 1192 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1193 iterator erase(const_iterator __first, const_iterator __last); 1194 1195 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1196 basic_string& replace(size_type __pos1, size_type __n1, const basic_string& __str); 1197 1198 template <class _Tp> 1199 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_AFTER_CXX17 1200 __enable_if_t 1201 < 1202 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1203 basic_string& 1204 > 1205 replace(size_type __pos1, size_type __n1, const _Tp& __t) { __self_view __sv = __t; return replace(__pos1, __n1, __sv.data(), __sv.size()); } 1206 _LIBCPP_CONSTEXPR_AFTER_CXX17 1207 basic_string& replace(size_type __pos1, size_type __n1, const basic_string& __str, size_type __pos2, size_type __n2=npos); 1208 template <class _Tp> 1209 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_AFTER_CXX17 1210 __enable_if_t 1211 < 1212 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value && !__is_same_uncvref<_Tp, basic_string>::value, 1213 basic_string& 1214 > 1215 replace(size_type __pos1, size_type __n1, const _Tp& __t, size_type __pos2, size_type __n2=npos); 1216 _LIBCPP_CONSTEXPR_AFTER_CXX17 1217 basic_string& replace(size_type __pos, size_type __n1, const value_type* __s, size_type __n2); 1218 _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string& replace(size_type __pos, size_type __n1, const value_type* __s); 1219 _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string& replace(size_type __pos, size_type __n1, size_type __n2, value_type __c); 1220 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1221 basic_string& replace(const_iterator __i1, const_iterator __i2, const basic_string& __str); 1222 1223 template <class _Tp> 1224 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_AFTER_CXX17 1225 __enable_if_t 1226 < 1227 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1228 basic_string& 1229 > 1230 replace(const_iterator __i1, const_iterator __i2, const _Tp& __t) { __self_view __sv = __t; return replace(__i1 - begin(), __i2 - __i1, __sv); } 1231 1232 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1233 basic_string& replace(const_iterator __i1, const_iterator __i2, const value_type* __s, size_type __n); 1234 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1235 basic_string& replace(const_iterator __i1, const_iterator __i2, const value_type* __s); 1236 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1237 basic_string& replace(const_iterator __i1, const_iterator __i2, size_type __n, value_type __c); 1238 template<class _InputIterator> 1239 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_AFTER_CXX17 1240 __enable_if_t 1241 < 1242 __is_cpp17_input_iterator<_InputIterator>::value, 1243 basic_string& 1244 > 1245 replace(const_iterator __i1, const_iterator __i2, _InputIterator __j1, _InputIterator __j2); 1246#ifndef _LIBCPP_CXX03_LANG 1247 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1248 basic_string& replace(const_iterator __i1, const_iterator __i2, initializer_list<value_type> __il) 1249 {return replace(__i1, __i2, __il.begin(), __il.end());} 1250#endif // _LIBCPP_CXX03_LANG 1251 1252 _LIBCPP_CONSTEXPR_AFTER_CXX17 size_type copy(value_type* __s, size_type __n, size_type __pos = 0) const; 1253 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1254 basic_string substr(size_type __pos = 0, size_type __n = npos) const; 1255 1256 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1257 void swap(basic_string& __str) 1258#if _LIBCPP_STD_VER >= 14 1259 _NOEXCEPT; 1260#else 1261 _NOEXCEPT_(!__alloc_traits::propagate_on_container_swap::value || 1262 __is_nothrow_swappable<allocator_type>::value); 1263#endif 1264 1265 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1266 const value_type* c_str() const _NOEXCEPT {return data();} 1267 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1268 const value_type* data() const _NOEXCEPT {return std::__to_address(__get_pointer());} 1269#if _LIBCPP_STD_VER > 14 || defined(_LIBCPP_BUILDING_LIBRARY) 1270 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1271 value_type* data() _NOEXCEPT {return std::__to_address(__get_pointer());} 1272#endif 1273 1274 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1275 allocator_type get_allocator() const _NOEXCEPT {return __alloc();} 1276 1277 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1278 size_type find(const basic_string& __str, size_type __pos = 0) const _NOEXCEPT; 1279 1280 template <class _Tp> 1281 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_AFTER_CXX17 1282 __enable_if_t 1283 < 1284 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1285 size_type 1286 > 1287 find(const _Tp& __t, size_type __pos = 0) const _NOEXCEPT; 1288 _LIBCPP_CONSTEXPR_AFTER_CXX17 1289 size_type find(const value_type* __s, size_type __pos, size_type __n) const _NOEXCEPT; 1290 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1291 size_type find(const value_type* __s, size_type __pos = 0) const _NOEXCEPT; 1292 _LIBCPP_CONSTEXPR_AFTER_CXX17 size_type find(value_type __c, size_type __pos = 0) const _NOEXCEPT; 1293 1294 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1295 size_type rfind(const basic_string& __str, size_type __pos = npos) const _NOEXCEPT; 1296 1297 template <class _Tp> 1298 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_AFTER_CXX17 1299 __enable_if_t 1300 < 1301 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1302 size_type 1303 > 1304 rfind(const _Tp& __t, size_type __pos = npos) const _NOEXCEPT; 1305 _LIBCPP_CONSTEXPR_AFTER_CXX17 1306 size_type rfind(const value_type* __s, size_type __pos, size_type __n) const _NOEXCEPT; 1307 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1308 size_type rfind(const value_type* __s, size_type __pos = npos) const _NOEXCEPT; 1309 _LIBCPP_CONSTEXPR_AFTER_CXX17 size_type rfind(value_type __c, size_type __pos = npos) const _NOEXCEPT; 1310 1311 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1312 size_type find_first_of(const basic_string& __str, size_type __pos = 0) const _NOEXCEPT; 1313 1314 template <class _Tp> 1315 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_AFTER_CXX17 1316 __enable_if_t 1317 < 1318 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1319 size_type 1320 > 1321 find_first_of(const _Tp& __t, size_type __pos = 0) const _NOEXCEPT; 1322 _LIBCPP_CONSTEXPR_AFTER_CXX17 1323 size_type find_first_of(const value_type* __s, size_type __pos, size_type __n) const _NOEXCEPT; 1324 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1325 size_type find_first_of(const value_type* __s, size_type __pos = 0) const _NOEXCEPT; 1326 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1327 size_type find_first_of(value_type __c, size_type __pos = 0) const _NOEXCEPT; 1328 1329 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1330 size_type find_last_of(const basic_string& __str, size_type __pos = npos) const _NOEXCEPT; 1331 1332 template <class _Tp> 1333 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_AFTER_CXX17 1334 __enable_if_t 1335 < 1336 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1337 size_type 1338 > 1339 find_last_of(const _Tp& __t, size_type __pos = npos) const _NOEXCEPT; 1340 _LIBCPP_CONSTEXPR_AFTER_CXX17 1341 size_type find_last_of(const value_type* __s, size_type __pos, size_type __n) const _NOEXCEPT; 1342 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1343 size_type find_last_of(const value_type* __s, size_type __pos = npos) const _NOEXCEPT; 1344 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1345 size_type find_last_of(value_type __c, size_type __pos = npos) const _NOEXCEPT; 1346 1347 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1348 size_type find_first_not_of(const basic_string& __str, size_type __pos = 0) const _NOEXCEPT; 1349 1350 template <class _Tp> 1351 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_AFTER_CXX17 1352 __enable_if_t 1353 < 1354 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1355 size_type 1356 > 1357 find_first_not_of(const _Tp &__t, size_type __pos = 0) const _NOEXCEPT; 1358 _LIBCPP_CONSTEXPR_AFTER_CXX17 1359 size_type find_first_not_of(const value_type* __s, size_type __pos, size_type __n) const _NOEXCEPT; 1360 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1361 size_type find_first_not_of(const value_type* __s, size_type __pos = 0) const _NOEXCEPT; 1362 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1363 size_type find_first_not_of(value_type __c, size_type __pos = 0) const _NOEXCEPT; 1364 1365 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1366 size_type find_last_not_of(const basic_string& __str, size_type __pos = npos) const _NOEXCEPT; 1367 1368 template <class _Tp> 1369 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_AFTER_CXX17 1370 __enable_if_t 1371 < 1372 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1373 size_type 1374 > 1375 find_last_not_of(const _Tp& __t, size_type __pos = npos) const _NOEXCEPT; 1376 _LIBCPP_CONSTEXPR_AFTER_CXX17 1377 size_type find_last_not_of(const value_type* __s, size_type __pos, size_type __n) const _NOEXCEPT; 1378 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1379 size_type find_last_not_of(const value_type* __s, size_type __pos = npos) const _NOEXCEPT; 1380 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1381 size_type find_last_not_of(value_type __c, size_type __pos = npos) const _NOEXCEPT; 1382 1383 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1384 int compare(const basic_string& __str) const _NOEXCEPT; 1385 1386 template <class _Tp> 1387 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_AFTER_CXX17 1388 __enable_if_t 1389 < 1390 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1391 int 1392 > 1393 compare(const _Tp &__t) const _NOEXCEPT; 1394 1395 template <class _Tp> 1396 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_AFTER_CXX17 1397 __enable_if_t 1398 < 1399 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1400 int 1401 > 1402 compare(size_type __pos1, size_type __n1, const _Tp& __t) const; 1403 1404 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1405 int compare(size_type __pos1, size_type __n1, const basic_string& __str) const; 1406 _LIBCPP_CONSTEXPR_AFTER_CXX17 1407 int compare(size_type __pos1, size_type __n1, const basic_string& __str, size_type __pos2, 1408 size_type __n2 = npos) const; 1409 1410 template <class _Tp> 1411 inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1412 __enable_if_t 1413 < 1414 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value && !__is_same_uncvref<_Tp, basic_string>::value, 1415 int 1416 > 1417 compare(size_type __pos1, size_type __n1, const _Tp& __t, size_type __pos2, size_type __n2=npos) const; 1418 _LIBCPP_CONSTEXPR_AFTER_CXX17 int compare(const value_type* __s) const _NOEXCEPT; 1419 _LIBCPP_CONSTEXPR_AFTER_CXX17 int compare(size_type __pos1, size_type __n1, const value_type* __s) const; 1420 _LIBCPP_CONSTEXPR_AFTER_CXX17 1421 int compare(size_type __pos1, size_type __n1, const value_type* __s, size_type __n2) const; 1422 1423#if _LIBCPP_STD_VER > 17 1424 constexpr _LIBCPP_HIDE_FROM_ABI 1425 bool starts_with(__self_view __sv) const noexcept 1426 { return __self_view(data(), size()).starts_with(__sv); } 1427 1428 constexpr _LIBCPP_HIDE_FROM_ABI 1429 bool starts_with(value_type __c) const noexcept 1430 { return !empty() && _Traits::eq(front(), __c); } 1431 1432 constexpr _LIBCPP_HIDE_FROM_ABI 1433 bool starts_with(const value_type* __s) const noexcept 1434 { return starts_with(__self_view(__s)); } 1435 1436 constexpr _LIBCPP_HIDE_FROM_ABI 1437 bool ends_with(__self_view __sv) const noexcept 1438 { return __self_view(data(), size()).ends_with( __sv); } 1439 1440 constexpr _LIBCPP_HIDE_FROM_ABI 1441 bool ends_with(value_type __c) const noexcept 1442 { return !empty() && _Traits::eq(back(), __c); } 1443 1444 constexpr _LIBCPP_HIDE_FROM_ABI 1445 bool ends_with(const value_type* __s) const noexcept 1446 { return ends_with(__self_view(__s)); } 1447#endif 1448 1449#if _LIBCPP_STD_VER > 20 1450 constexpr _LIBCPP_HIDE_FROM_ABI 1451 bool contains(__self_view __sv) const noexcept 1452 { return __self_view(data(), size()).contains(__sv); } 1453 1454 constexpr _LIBCPP_HIDE_FROM_ABI 1455 bool contains(value_type __c) const noexcept 1456 { return __self_view(data(), size()).contains(__c); } 1457 1458 constexpr _LIBCPP_HIDE_FROM_ABI 1459 bool contains(const value_type* __s) const 1460 { return __self_view(data(), size()).contains(__s); } 1461#endif 1462 1463 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 bool __invariants() const; 1464 1465 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 void __clear_and_shrink() _NOEXCEPT; 1466 1467#if _LIBCPP_DEBUG_LEVEL == 2 1468 1469 bool __dereferenceable(const const_iterator* __i) const; 1470 bool __decrementable(const const_iterator* __i) const; 1471 bool __addable(const const_iterator* __i, ptrdiff_t __n) const; 1472 bool __subscriptable(const const_iterator* __i, ptrdiff_t __n) const; 1473 1474#endif // _LIBCPP_DEBUG_LEVEL == 2 1475 1476private: 1477 template<class _Alloc> 1478 inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1479 bool friend operator==(const basic_string<char, char_traits<char>, _Alloc>& __lhs, 1480 const basic_string<char, char_traits<char>, _Alloc>& __rhs) _NOEXCEPT; 1481 1482 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 void __shrink_or_extend(size_type __target_capacity); 1483 1484 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1485 bool __is_long() const _NOEXCEPT { 1486 if (__libcpp_is_constant_evaluated()) 1487 return true; 1488 return __r_.first().__s.__is_long_; 1489 } 1490 1491 static _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 void __begin_lifetime(pointer __begin, size_type __n) { 1492#if _LIBCPP_STD_VER > 17 1493 if (__libcpp_is_constant_evaluated()) { 1494 for (size_type __i = 0; __i != __n; ++__i) 1495 std::construct_at(std::addressof(__begin[__i])); 1496 } 1497#else 1498 (void)__begin; 1499 (void)__n; 1500#endif // _LIBCPP_STD_VER > 17 1501 } 1502 1503 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 void __default_init() { 1504 __zero(); 1505 if (__libcpp_is_constant_evaluated()) { 1506 size_type __sz = __recommend(0) + 1; 1507 pointer __ptr = __alloc_traits::allocate(__alloc(), __sz); 1508 __begin_lifetime(__ptr, __sz); 1509 __set_long_pointer(__ptr); 1510 __set_long_cap(__sz); 1511 __set_long_size(0); 1512 } 1513 } 1514 1515 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 void __deallocate_constexpr() { 1516 if (__libcpp_is_constant_evaluated() && __get_pointer() != nullptr) 1517 __alloc_traits::deallocate(__alloc(), __get_pointer(), __get_long_cap()); 1518 } 1519 1520 _LIBCPP_CONSTEXPR _LIBCPP_HIDE_FROM_ABI static bool __fits_in_sso(size_type __sz) { 1521 // SSO is disabled during constant evaluation because `__is_long` isn't constexpr friendly 1522 return !__libcpp_is_constant_evaluated() && (__sz < __min_cap); 1523 } 1524 1525 template <class _ForwardIterator> 1526 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX11 1527 iterator __insert_from_safe_copy(size_type __n, size_type __ip, _ForwardIterator __first, _ForwardIterator __last) { 1528 size_type __sz = size(); 1529 size_type __cap = capacity(); 1530 value_type* __p; 1531 if (__cap - __sz >= __n) 1532 { 1533 __p = std::__to_address(__get_pointer()); 1534 size_type __n_move = __sz - __ip; 1535 if (__n_move != 0) 1536 traits_type::move(__p + __ip + __n, __p + __ip, __n_move); 1537 } 1538 else 1539 { 1540 __grow_by(__cap, __sz + __n - __cap, __sz, __ip, 0, __n); 1541 __p = std::__to_address(__get_long_pointer()); 1542 } 1543 __sz += __n; 1544 __set_size(__sz); 1545 traits_type::assign(__p[__sz], value_type()); 1546 for (__p += __ip; __first != __last; ++__p, ++__first) 1547 traits_type::assign(*__p, *__first); 1548 1549 return begin() + __ip; 1550 } 1551 1552 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX11 allocator_type& __alloc() _NOEXCEPT { return __r_.second(); } 1553 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR const allocator_type& __alloc() const _NOEXCEPT { return __r_.second(); } 1554 1555 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1556 void __set_short_size(size_type __s) _NOEXCEPT { 1557 _LIBCPP_ASSERT(__s < __min_cap, "__s should never be greater than or equal to the short string capacity"); 1558 __r_.first().__s.__size_ = __s; 1559 __r_.first().__s.__is_long_ = false; 1560 } 1561 1562 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1563 size_type __get_short_size() const _NOEXCEPT { 1564 _LIBCPP_ASSERT(!__r_.first().__s.__is_long_, "String has to be short when trying to get the short size"); 1565 return __r_.first().__s.__size_; 1566 } 1567 1568 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1569 void __set_long_size(size_type __s) _NOEXCEPT 1570 {__r_.first().__l.__size_ = __s;} 1571 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1572 size_type __get_long_size() const _NOEXCEPT 1573 {return __r_.first().__l.__size_;} 1574 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1575 void __set_size(size_type __s) _NOEXCEPT 1576 {if (__is_long()) __set_long_size(__s); else __set_short_size(__s);} 1577 1578 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1579 void __set_long_cap(size_type __s) _NOEXCEPT { 1580 __r_.first().__l.__cap_ = __s / __endian_factor; 1581 __r_.first().__l.__is_long_ = true; 1582 } 1583 1584 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1585 size_type __get_long_cap() const _NOEXCEPT { 1586 return __r_.first().__l.__cap_ * __endian_factor; 1587 } 1588 1589 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1590 void __set_long_pointer(pointer __p) _NOEXCEPT 1591 {__r_.first().__l.__data_ = __p;} 1592 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1593 pointer __get_long_pointer() _NOEXCEPT 1594 {return __r_.first().__l.__data_;} 1595 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1596 const_pointer __get_long_pointer() const _NOEXCEPT 1597 {return __r_.first().__l.__data_;} 1598 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1599 pointer __get_short_pointer() _NOEXCEPT 1600 {return pointer_traits<pointer>::pointer_to(__r_.first().__s.__data_[0]);} 1601 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1602 const_pointer __get_short_pointer() const _NOEXCEPT 1603 {return pointer_traits<const_pointer>::pointer_to(__r_.first().__s.__data_[0]);} 1604 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1605 pointer __get_pointer() _NOEXCEPT 1606 {return __is_long() ? __get_long_pointer() : __get_short_pointer();} 1607 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1608 const_pointer __get_pointer() const _NOEXCEPT 1609 {return __is_long() ? __get_long_pointer() : __get_short_pointer();} 1610 1611 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1612 void __zero() _NOEXCEPT { 1613 __r_.first() = __rep(); 1614 } 1615 1616 template <size_type __a> static 1617 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1618 size_type __align_it(size_type __s) _NOEXCEPT 1619 {return (__s + (__a-1)) & ~(__a-1);} 1620 enum {__alignment = 16}; 1621 static _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1622 size_type __recommend(size_type __s) _NOEXCEPT 1623 { 1624 if (__s < __min_cap) { 1625 if (__libcpp_is_constant_evaluated()) 1626 return static_cast<size_type>(__min_cap); 1627 else 1628 return static_cast<size_type>(__min_cap) - 1; 1629 } 1630 size_type __guess = __align_it<sizeof(value_type) < __alignment ? 1631 __alignment/sizeof(value_type) : 1 > (__s+1) - 1; 1632 if (__guess == __min_cap) ++__guess; 1633 return __guess; 1634 } 1635 1636 inline _LIBCPP_CONSTEXPR_AFTER_CXX17 1637 void __init(const value_type* __s, size_type __sz, size_type __reserve); 1638 inline _LIBCPP_CONSTEXPR_AFTER_CXX17 1639 void __init(const value_type* __s, size_type __sz); 1640 inline _LIBCPP_CONSTEXPR_AFTER_CXX17 1641 void __init(size_type __n, value_type __c); 1642 1643 // Slow path for the (inlined) copy constructor for 'long' strings. 1644 // Always externally instantiated and not inlined. 1645 // Requires that __s is zero terminated. 1646 // The main reason for this function to exist is because for unstable, we 1647 // want to allow inlining of the copy constructor. However, we don't want 1648 // to call the __init() functions as those are marked as inline which may 1649 // result in over-aggressive inlining by the compiler, where our aim is 1650 // to only inline the fast path code directly in the ctor. 1651 _LIBCPP_CONSTEXPR_AFTER_CXX17 void __init_copy_ctor_external(const value_type* __s, size_type __sz); 1652 1653 template <class _InputIterator> 1654 inline _LIBCPP_CONSTEXPR_AFTER_CXX17 1655 __enable_if_t 1656 < 1657 __is_exactly_cpp17_input_iterator<_InputIterator>::value 1658 > 1659 __init(_InputIterator __first, _InputIterator __last); 1660 1661 template <class _ForwardIterator> 1662 inline _LIBCPP_CONSTEXPR_AFTER_CXX17 1663 __enable_if_t 1664 < 1665 __is_cpp17_forward_iterator<_ForwardIterator>::value 1666 > 1667 __init(_ForwardIterator __first, _ForwardIterator __last); 1668 1669 _LIBCPP_CONSTEXPR_AFTER_CXX17 1670 void __grow_by(size_type __old_cap, size_type __delta_cap, size_type __old_sz, 1671 size_type __n_copy, size_type __n_del, size_type __n_add = 0); 1672 _LIBCPP_CONSTEXPR_AFTER_CXX17 1673 void __grow_by_and_replace(size_type __old_cap, size_type __delta_cap, size_type __old_sz, 1674 size_type __n_copy, size_type __n_del, 1675 size_type __n_add, const value_type* __p_new_stuff); 1676 1677 // __assign_no_alias is invoked for assignment operations where we 1678 // have proof that the input does not alias the current instance. 1679 // For example, operator=(basic_string) performs a 'self' check. 1680 template <bool __is_short> 1681 _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string& __assign_no_alias(const value_type* __s, size_type __n); 1682 1683 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1684 void __erase_to_end(size_type __pos); 1685 1686 // __erase_external_with_move is invoked for erase() invocations where 1687 // `n ~= npos`, likely requiring memory moves on the string data. 1688 _LIBCPP_CONSTEXPR_AFTER_CXX17 void __erase_external_with_move(size_type __pos, size_type __n); 1689 1690 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1691 void __copy_assign_alloc(const basic_string& __str) 1692 {__copy_assign_alloc(__str, integral_constant<bool, 1693 __alloc_traits::propagate_on_container_copy_assignment::value>());} 1694 1695 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1696 void __copy_assign_alloc(const basic_string& __str, true_type) 1697 { 1698 if (__alloc() == __str.__alloc()) 1699 __alloc() = __str.__alloc(); 1700 else 1701 { 1702 if (!__str.__is_long()) 1703 { 1704 __clear_and_shrink(); 1705 __alloc() = __str.__alloc(); 1706 } 1707 else 1708 { 1709 allocator_type __a = __str.__alloc(); 1710 auto __allocation = std::__allocate_at_least(__a, __str.__get_long_cap()); 1711 __begin_lifetime(__allocation.ptr, __allocation.count); 1712 __clear_and_shrink(); 1713 __alloc() = std::move(__a); 1714 __set_long_pointer(__allocation.ptr); 1715 __set_long_cap(__allocation.count); 1716 __set_long_size(__str.size()); 1717 } 1718 } 1719 } 1720 1721 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1722 void __copy_assign_alloc(const basic_string&, false_type) _NOEXCEPT 1723 {} 1724 1725#ifndef _LIBCPP_CXX03_LANG 1726 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1727 void __move_assign(basic_string& __str, false_type) 1728 _NOEXCEPT_(__alloc_traits::is_always_equal::value); 1729 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1730 void __move_assign(basic_string& __str, true_type) 1731#if _LIBCPP_STD_VER > 14 1732 _NOEXCEPT; 1733#else 1734 _NOEXCEPT_(is_nothrow_move_assignable<allocator_type>::value); 1735#endif 1736#endif 1737 1738 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1739 void 1740 __move_assign_alloc(basic_string& __str) 1741 _NOEXCEPT_( 1742 !__alloc_traits::propagate_on_container_move_assignment::value || 1743 is_nothrow_move_assignable<allocator_type>::value) 1744 {__move_assign_alloc(__str, integral_constant<bool, 1745 __alloc_traits::propagate_on_container_move_assignment::value>());} 1746 1747 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1748 void __move_assign_alloc(basic_string& __c, true_type) 1749 _NOEXCEPT_(is_nothrow_move_assignable<allocator_type>::value) 1750 { 1751 __alloc() = std::move(__c.__alloc()); 1752 } 1753 1754 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1755 void __move_assign_alloc(basic_string&, false_type) 1756 _NOEXCEPT 1757 {} 1758 1759 _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string& __assign_external(const value_type* __s); 1760 _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string& __assign_external(const value_type* __s, size_type __n); 1761 1762 // Assigns the value in __s, guaranteed to be __n < __min_cap in length. 1763 inline basic_string& __assign_short(const value_type* __s, size_type __n) { 1764 pointer __p = __is_long() 1765 ? (__set_long_size(__n), __get_long_pointer()) 1766 : (__set_short_size(__n), __get_short_pointer()); 1767 traits_type::move(std::__to_address(__p), __s, __n); 1768 traits_type::assign(__p[__n], value_type()); 1769 return *this; 1770 } 1771 1772 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1773 basic_string& __null_terminate_at(value_type* __p, size_type __newsz) { 1774 __set_size(__newsz); 1775 __invalidate_iterators_past(__newsz); 1776 traits_type::assign(__p[__newsz], value_type()); 1777 return *this; 1778 } 1779 1780 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 void __invalidate_iterators_past(size_type); 1781 1782 template<class _Tp> 1783 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1784 bool __addr_in_range(_Tp&& __t) const { 1785 // assume that the ranges overlap, because we can't check during constant evaluation 1786 if (__libcpp_is_constant_evaluated()) 1787 return true; 1788 const volatile void *__p = std::addressof(__t); 1789 return data() <= __p && __p <= data() + size(); 1790 } 1791 1792 _LIBCPP_NORETURN _LIBCPP_HIDE_FROM_ABI 1793 void __throw_length_error() const { 1794 std::__throw_length_error("basic_string"); 1795 } 1796 1797 _LIBCPP_NORETURN _LIBCPP_HIDE_FROM_ABI 1798 void __throw_out_of_range() const { 1799 std::__throw_out_of_range("basic_string"); 1800 } 1801 1802 friend _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string operator+<>(const basic_string&, const basic_string&); 1803 friend _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string operator+<>(const value_type*, const basic_string&); 1804 friend _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string operator+<>(value_type, const basic_string&); 1805 friend _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string operator+<>(const basic_string&, const value_type*); 1806 friend _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string operator+<>(const basic_string&, value_type); 1807}; 1808 1809// These declarations must appear before any functions are implicitly used 1810// so that they have the correct visibility specifier. 1811#ifdef _LIBCPP_ABI_STRING_OPTIMIZED_EXTERNAL_INSTANTIATION 1812 _LIBCPP_STRING_UNSTABLE_EXTERN_TEMPLATE_LIST(_LIBCPP_EXTERN_TEMPLATE, char) 1813# ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 1814 _LIBCPP_STRING_UNSTABLE_EXTERN_TEMPLATE_LIST(_LIBCPP_EXTERN_TEMPLATE, wchar_t) 1815# endif 1816#else 1817 _LIBCPP_STRING_V1_EXTERN_TEMPLATE_LIST(_LIBCPP_EXTERN_TEMPLATE, char) 1818# ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 1819 _LIBCPP_STRING_V1_EXTERN_TEMPLATE_LIST(_LIBCPP_EXTERN_TEMPLATE, wchar_t) 1820# endif 1821#endif 1822 1823 1824#if _LIBCPP_STD_VER >= 17 1825template<class _InputIterator, 1826 class _CharT = __iter_value_type<_InputIterator>, 1827 class _Allocator = allocator<_CharT>, 1828 class = enable_if_t<__is_cpp17_input_iterator<_InputIterator>::value>, 1829 class = enable_if_t<__is_allocator<_Allocator>::value> 1830 > 1831basic_string(_InputIterator, _InputIterator, _Allocator = _Allocator()) 1832 -> basic_string<_CharT, char_traits<_CharT>, _Allocator>; 1833 1834template<class _CharT, 1835 class _Traits, 1836 class _Allocator = allocator<_CharT>, 1837 class = enable_if_t<__is_allocator<_Allocator>::value> 1838 > 1839explicit basic_string(basic_string_view<_CharT, _Traits>, const _Allocator& = _Allocator()) 1840 -> basic_string<_CharT, _Traits, _Allocator>; 1841 1842template<class _CharT, 1843 class _Traits, 1844 class _Allocator = allocator<_CharT>, 1845 class = enable_if_t<__is_allocator<_Allocator>::value>, 1846 class _Sz = typename allocator_traits<_Allocator>::size_type 1847 > 1848basic_string(basic_string_view<_CharT, _Traits>, _Sz, _Sz, const _Allocator& = _Allocator()) 1849 -> basic_string<_CharT, _Traits, _Allocator>; 1850#endif 1851 1852template <class _CharT, class _Traits, class _Allocator> 1853inline _LIBCPP_CONSTEXPR_AFTER_CXX17 1854void 1855basic_string<_CharT, _Traits, _Allocator>::__invalidate_iterators_past(size_type __pos) 1856{ 1857#if _LIBCPP_DEBUG_LEVEL == 2 1858 if (!__libcpp_is_constant_evaluated()) { 1859 __c_node* __c = __get_db()->__find_c_and_lock(this); 1860 if (__c) 1861 { 1862 const_pointer __new_last = __get_pointer() + __pos; 1863 for (__i_node** __p = __c->end_; __p != __c->beg_; ) 1864 { 1865 --__p; 1866 const_iterator* __i = static_cast<const_iterator*>((*__p)->__i_); 1867 if (__i->base() > __new_last) 1868 { 1869 (*__p)->__c_ = nullptr; 1870 if (--__c->end_ != __p) 1871 std::memmove(__p, __p+1, (__c->end_ - __p)*sizeof(__i_node*)); 1872 } 1873 } 1874 __get_db()->unlock(); 1875 } 1876 } 1877#else 1878 (void)__pos; 1879#endif // _LIBCPP_DEBUG_LEVEL == 2 1880} 1881 1882template <class _CharT, class _Traits, class _Allocator> 1883inline _LIBCPP_CONSTEXPR_AFTER_CXX17 1884basic_string<_CharT, _Traits, _Allocator>::basic_string() 1885 _NOEXCEPT_(is_nothrow_default_constructible<allocator_type>::value) 1886 : __r_(__default_init_tag(), __default_init_tag()) 1887{ 1888 std::__debug_db_insert_c(this); 1889 __default_init(); 1890} 1891 1892template <class _CharT, class _Traits, class _Allocator> 1893inline _LIBCPP_CONSTEXPR_AFTER_CXX17 1894basic_string<_CharT, _Traits, _Allocator>::basic_string(const allocator_type& __a) 1895#if _LIBCPP_STD_VER <= 14 1896 _NOEXCEPT_(is_nothrow_copy_constructible<allocator_type>::value) 1897#else 1898 _NOEXCEPT 1899#endif 1900: __r_(__default_init_tag(), __a) 1901{ 1902 std::__debug_db_insert_c(this); 1903 __default_init(); 1904} 1905 1906template <class _CharT, class _Traits, class _Allocator> 1907_LIBCPP_CONSTEXPR_AFTER_CXX17 1908void basic_string<_CharT, _Traits, _Allocator>::__init(const value_type* __s, 1909 size_type __sz, 1910 size_type __reserve) 1911{ 1912 if (__libcpp_is_constant_evaluated()) 1913 __zero(); 1914 if (__reserve > max_size()) 1915 __throw_length_error(); 1916 pointer __p; 1917 if (__fits_in_sso(__reserve)) 1918 { 1919 __set_short_size(__sz); 1920 __p = __get_short_pointer(); 1921 } 1922 else 1923 { 1924 auto __allocation = std::__allocate_at_least(__alloc(), __recommend(__reserve) + 1); 1925 __p = __allocation.ptr; 1926 __begin_lifetime(__p, __allocation.count); 1927 __set_long_pointer(__p); 1928 __set_long_cap(__allocation.count); 1929 __set_long_size(__sz); 1930 } 1931 traits_type::copy(std::__to_address(__p), __s, __sz); 1932 traits_type::assign(__p[__sz], value_type()); 1933} 1934 1935template <class _CharT, class _Traits, class _Allocator> 1936_LIBCPP_CONSTEXPR_AFTER_CXX17 1937void 1938basic_string<_CharT, _Traits, _Allocator>::__init(const value_type* __s, size_type __sz) 1939{ 1940 if (__libcpp_is_constant_evaluated()) 1941 __zero(); 1942 if (__sz > max_size()) 1943 __throw_length_error(); 1944 pointer __p; 1945 if (__fits_in_sso(__sz)) 1946 { 1947 __set_short_size(__sz); 1948 __p = __get_short_pointer(); 1949 } 1950 else 1951 { 1952 auto __allocation = std::__allocate_at_least(__alloc(), __recommend(__sz) + 1); 1953 __p = __allocation.ptr; 1954 __begin_lifetime(__p, __allocation.count); 1955 __set_long_pointer(__p); 1956 __set_long_cap(__allocation.count); 1957 __set_long_size(__sz); 1958 } 1959 traits_type::copy(std::__to_address(__p), __s, __sz); 1960 traits_type::assign(__p[__sz], value_type()); 1961} 1962 1963template <class _CharT, class _Traits, class _Allocator> 1964template <class> 1965_LIBCPP_CONSTEXPR_AFTER_CXX17 1966basic_string<_CharT, _Traits, _Allocator>::basic_string(const _CharT* __s, const _Allocator& __a) 1967 : __r_(__default_init_tag(), __a) 1968{ 1969 _LIBCPP_ASSERT(__s != nullptr, "basic_string(const char*, allocator) detected nullptr"); 1970 __init(__s, traits_type::length(__s)); 1971 std::__debug_db_insert_c(this); 1972} 1973 1974template <class _CharT, class _Traits, class _Allocator> 1975inline _LIBCPP_CONSTEXPR_AFTER_CXX17 1976basic_string<_CharT, _Traits, _Allocator>::basic_string(const _CharT* __s, size_type __n) 1977 : __r_(__default_init_tag(), __default_init_tag()) 1978{ 1979 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "basic_string(const char*, n) detected nullptr"); 1980 __init(__s, __n); 1981 std::__debug_db_insert_c(this); 1982} 1983 1984template <class _CharT, class _Traits, class _Allocator> 1985inline _LIBCPP_CONSTEXPR_AFTER_CXX17 1986basic_string<_CharT, _Traits, _Allocator>::basic_string(const _CharT* __s, size_type __n, const _Allocator& __a) 1987 : __r_(__default_init_tag(), __a) 1988{ 1989 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "basic_string(const char*, n, allocator) detected nullptr"); 1990 __init(__s, __n); 1991 std::__debug_db_insert_c(this); 1992} 1993 1994template <class _CharT, class _Traits, class _Allocator> 1995_LIBCPP_CONSTEXPR_AFTER_CXX17 1996basic_string<_CharT, _Traits, _Allocator>::basic_string(const basic_string& __str) 1997 : __r_(__default_init_tag(), __alloc_traits::select_on_container_copy_construction(__str.__alloc())) 1998{ 1999 if (!__str.__is_long()) 2000 __r_.first().__r = __str.__r_.first().__r; 2001 else 2002 __init_copy_ctor_external(std::__to_address(__str.__get_long_pointer()), 2003 __str.__get_long_size()); 2004 std::__debug_db_insert_c(this); 2005} 2006 2007template <class _CharT, class _Traits, class _Allocator> 2008_LIBCPP_CONSTEXPR_AFTER_CXX17 2009basic_string<_CharT, _Traits, _Allocator>::basic_string( 2010 const basic_string& __str, const allocator_type& __a) 2011 : __r_(__default_init_tag(), __a) 2012{ 2013 if (!__str.__is_long()) 2014 __r_.first().__r = __str.__r_.first().__r; 2015 else 2016 __init_copy_ctor_external(std::__to_address(__str.__get_long_pointer()), 2017 __str.__get_long_size()); 2018 std::__debug_db_insert_c(this); 2019} 2020 2021template <class _CharT, class _Traits, class _Allocator> 2022_LIBCPP_CONSTEXPR_AFTER_CXX17 2023void basic_string<_CharT, _Traits, _Allocator>::__init_copy_ctor_external( 2024 const value_type* __s, size_type __sz) { 2025 if (__libcpp_is_constant_evaluated()) 2026 __zero(); 2027 pointer __p; 2028 if (__fits_in_sso(__sz)) { 2029 __p = __get_short_pointer(); 2030 __set_short_size(__sz); 2031 } else { 2032 if (__sz > max_size()) 2033 __throw_length_error(); 2034 auto __allocation = std::__allocate_at_least(__alloc(), __recommend(__sz) + 1); 2035 __p = __allocation.ptr; 2036 __begin_lifetime(__p, __allocation.count); 2037 __set_long_pointer(__p); 2038 __set_long_cap(__allocation.count); 2039 __set_long_size(__sz); 2040 } 2041 traits_type::copy(std::__to_address(__p), __s, __sz + 1); 2042} 2043 2044#ifndef _LIBCPP_CXX03_LANG 2045 2046template <class _CharT, class _Traits, class _Allocator> 2047inline _LIBCPP_CONSTEXPR_AFTER_CXX17 2048basic_string<_CharT, _Traits, _Allocator>::basic_string(basic_string&& __str) 2049#if _LIBCPP_STD_VER <= 14 2050 _NOEXCEPT_(is_nothrow_move_constructible<allocator_type>::value) 2051#else 2052 _NOEXCEPT 2053#endif 2054 : __r_(std::move(__str.__r_)) 2055{ 2056 __str.__default_init(); 2057 std::__debug_db_insert_c(this); 2058 if (__is_long()) 2059 std::__debug_db_swap(this, &__str); 2060} 2061 2062template <class _CharT, class _Traits, class _Allocator> 2063inline _LIBCPP_CONSTEXPR_AFTER_CXX17 2064basic_string<_CharT, _Traits, _Allocator>::basic_string(basic_string&& __str, const allocator_type& __a) 2065 : __r_(__default_init_tag(), __a) 2066{ 2067 if (__str.__is_long() && __a != __str.__alloc()) // copy, not move 2068 __init(std::__to_address(__str.__get_long_pointer()), __str.__get_long_size()); 2069 else 2070 { 2071 if (__libcpp_is_constant_evaluated()) { 2072 __zero(); 2073 __r_.first().__l = __str.__r_.first().__l; 2074 } else { 2075 __r_.first().__r = __str.__r_.first().__r; 2076 } 2077 __str.__default_init(); 2078 } 2079 std::__debug_db_insert_c(this); 2080 if (__is_long()) 2081 std::__debug_db_swap(this, &__str); 2082} 2083 2084#endif // _LIBCPP_CXX03_LANG 2085 2086template <class _CharT, class _Traits, class _Allocator> 2087_LIBCPP_CONSTEXPR_AFTER_CXX17 2088void 2089basic_string<_CharT, _Traits, _Allocator>::__init(size_type __n, value_type __c) 2090{ 2091 if (__libcpp_is_constant_evaluated()) 2092 __zero(); 2093 if (__n > max_size()) 2094 __throw_length_error(); 2095 pointer __p; 2096 if (__fits_in_sso(__n)) 2097 { 2098 __set_short_size(__n); 2099 __p = __get_short_pointer(); 2100 } 2101 else 2102 { 2103 auto __allocation = std::__allocate_at_least(__alloc(), __recommend(__n) + 1); 2104 __p = __allocation.ptr; 2105 __begin_lifetime(__p, __allocation.count); 2106 __set_long_pointer(__p); 2107 __set_long_cap(__allocation.count); 2108 __set_long_size(__n); 2109 } 2110 traits_type::assign(std::__to_address(__p), __n, __c); 2111 traits_type::assign(__p[__n], value_type()); 2112} 2113 2114template <class _CharT, class _Traits, class _Allocator> 2115inline _LIBCPP_CONSTEXPR_AFTER_CXX17 2116basic_string<_CharT, _Traits, _Allocator>::basic_string(size_type __n, _CharT __c) 2117 : __r_(__default_init_tag(), __default_init_tag()) 2118{ 2119 __init(__n, __c); 2120 std::__debug_db_insert_c(this); 2121} 2122 2123template <class _CharT, class _Traits, class _Allocator> 2124template <class> 2125_LIBCPP_CONSTEXPR_AFTER_CXX17 2126basic_string<_CharT, _Traits, _Allocator>::basic_string(size_type __n, _CharT __c, const _Allocator& __a) 2127 : __r_(__default_init_tag(), __a) 2128{ 2129 __init(__n, __c); 2130 std::__debug_db_insert_c(this); 2131} 2132 2133template <class _CharT, class _Traits, class _Allocator> 2134_LIBCPP_CONSTEXPR_AFTER_CXX17 2135basic_string<_CharT, _Traits, _Allocator>::basic_string(const basic_string& __str, 2136 size_type __pos, size_type __n, 2137 const _Allocator& __a) 2138 : __r_(__default_init_tag(), __a) 2139{ 2140 size_type __str_sz = __str.size(); 2141 if (__pos > __str_sz) 2142 __throw_out_of_range(); 2143 __init(__str.data() + __pos, std::min(__n, __str_sz - __pos)); 2144 std::__debug_db_insert_c(this); 2145} 2146 2147template <class _CharT, class _Traits, class _Allocator> 2148inline _LIBCPP_CONSTEXPR_AFTER_CXX17 2149basic_string<_CharT, _Traits, _Allocator>::basic_string(const basic_string& __str, size_type __pos, 2150 const _Allocator& __a) 2151 : __r_(__default_init_tag(), __a) 2152{ 2153 size_type __str_sz = __str.size(); 2154 if (__pos > __str_sz) 2155 __throw_out_of_range(); 2156 __init(__str.data() + __pos, __str_sz - __pos); 2157 std::__debug_db_insert_c(this); 2158} 2159 2160template <class _CharT, class _Traits, class _Allocator> 2161template <class _Tp, class> 2162_LIBCPP_CONSTEXPR_AFTER_CXX17 2163basic_string<_CharT, _Traits, _Allocator>::basic_string( 2164 const _Tp& __t, size_type __pos, size_type __n, const allocator_type& __a) 2165 : __r_(__default_init_tag(), __a) 2166{ 2167 __self_view __sv0 = __t; 2168 __self_view __sv = __sv0.substr(__pos, __n); 2169 __init(__sv.data(), __sv.size()); 2170 std::__debug_db_insert_c(this); 2171} 2172 2173template <class _CharT, class _Traits, class _Allocator> 2174template <class _Tp, class> 2175_LIBCPP_CONSTEXPR_AFTER_CXX17 2176basic_string<_CharT, _Traits, _Allocator>::basic_string(const _Tp & __t) 2177 : __r_(__default_init_tag(), __default_init_tag()) 2178{ 2179 __self_view __sv = __t; 2180 __init(__sv.data(), __sv.size()); 2181 std::__debug_db_insert_c(this); 2182} 2183 2184template <class _CharT, class _Traits, class _Allocator> 2185template <class _Tp, class> 2186_LIBCPP_CONSTEXPR_AFTER_CXX17 2187basic_string<_CharT, _Traits, _Allocator>::basic_string(const _Tp & __t, const _Allocator& __a) 2188 : __r_(__default_init_tag(), __a) 2189{ 2190 __self_view __sv = __t; 2191 __init(__sv.data(), __sv.size()); 2192 std::__debug_db_insert_c(this); 2193} 2194 2195template <class _CharT, class _Traits, class _Allocator> 2196template <class _InputIterator> 2197_LIBCPP_CONSTEXPR_AFTER_CXX17 2198__enable_if_t 2199< 2200 __is_exactly_cpp17_input_iterator<_InputIterator>::value 2201> 2202basic_string<_CharT, _Traits, _Allocator>::__init(_InputIterator __first, _InputIterator __last) 2203{ 2204 __default_init(); 2205#ifndef _LIBCPP_NO_EXCEPTIONS 2206 try 2207 { 2208#endif // _LIBCPP_NO_EXCEPTIONS 2209 for (; __first != __last; ++__first) 2210 push_back(*__first); 2211#ifndef _LIBCPP_NO_EXCEPTIONS 2212 } 2213 catch (...) 2214 { 2215 if (__is_long()) 2216 __alloc_traits::deallocate(__alloc(), __get_long_pointer(), __get_long_cap()); 2217 throw; 2218 } 2219#endif // _LIBCPP_NO_EXCEPTIONS 2220} 2221 2222template <class _CharT, class _Traits, class _Allocator> 2223template <class _ForwardIterator> 2224_LIBCPP_CONSTEXPR_AFTER_CXX17 2225__enable_if_t 2226< 2227 __is_cpp17_forward_iterator<_ForwardIterator>::value 2228> 2229basic_string<_CharT, _Traits, _Allocator>::__init(_ForwardIterator __first, _ForwardIterator __last) 2230{ 2231 if (__libcpp_is_constant_evaluated()) 2232 __zero(); 2233 size_type __sz = static_cast<size_type>(std::distance(__first, __last)); 2234 if (__sz > max_size()) 2235 __throw_length_error(); 2236 pointer __p; 2237 if (__fits_in_sso(__sz)) 2238 { 2239 __set_short_size(__sz); 2240 __p = __get_short_pointer(); 2241 } 2242 else 2243 { 2244 auto __allocation = std::__allocate_at_least(__alloc(), __recommend(__sz) + 1); 2245 __p = __allocation.ptr; 2246 __begin_lifetime(__p, __allocation.count); 2247 __set_long_pointer(__p); 2248 __set_long_cap(__allocation.count); 2249 __set_long_size(__sz); 2250 } 2251 2252#ifndef _LIBCPP_NO_EXCEPTIONS 2253 try 2254 { 2255#endif // _LIBCPP_NO_EXCEPTIONS 2256 for (; __first != __last; ++__first, (void) ++__p) 2257 traits_type::assign(*__p, *__first); 2258 traits_type::assign(*__p, value_type()); 2259#ifndef _LIBCPP_NO_EXCEPTIONS 2260 } 2261 catch (...) 2262 { 2263 if (__is_long()) 2264 __alloc_traits::deallocate(__alloc(), __get_long_pointer(), __get_long_cap()); 2265 throw; 2266 } 2267#endif // _LIBCPP_NO_EXCEPTIONS 2268} 2269 2270template <class _CharT, class _Traits, class _Allocator> 2271template<class _InputIterator, class> 2272inline _LIBCPP_CONSTEXPR_AFTER_CXX17 2273basic_string<_CharT, _Traits, _Allocator>::basic_string(_InputIterator __first, _InputIterator __last) 2274 : __r_(__default_init_tag(), __default_init_tag()) 2275{ 2276 __init(__first, __last); 2277 std::__debug_db_insert_c(this); 2278} 2279 2280template <class _CharT, class _Traits, class _Allocator> 2281template<class _InputIterator, class> 2282inline _LIBCPP_CONSTEXPR_AFTER_CXX17 2283basic_string<_CharT, _Traits, _Allocator>::basic_string(_InputIterator __first, _InputIterator __last, 2284 const allocator_type& __a) 2285 : __r_(__default_init_tag(), __a) 2286{ 2287 __init(__first, __last); 2288 std::__debug_db_insert_c(this); 2289} 2290 2291#ifndef _LIBCPP_CXX03_LANG 2292 2293template <class _CharT, class _Traits, class _Allocator> 2294inline _LIBCPP_CONSTEXPR_AFTER_CXX17 2295basic_string<_CharT, _Traits, _Allocator>::basic_string( 2296 initializer_list<_CharT> __il) 2297 : __r_(__default_init_tag(), __default_init_tag()) 2298{ 2299 __init(__il.begin(), __il.end()); 2300 std::__debug_db_insert_c(this); 2301} 2302 2303template <class _CharT, class _Traits, class _Allocator> 2304inline _LIBCPP_CONSTEXPR_AFTER_CXX17 2305basic_string<_CharT, _Traits, _Allocator>::basic_string( 2306 initializer_list<_CharT> __il, const _Allocator& __a) 2307 : __r_(__default_init_tag(), __a) 2308{ 2309 __init(__il.begin(), __il.end()); 2310 std::__debug_db_insert_c(this); 2311} 2312 2313#endif // _LIBCPP_CXX03_LANG 2314 2315template <class _CharT, class _Traits, class _Allocator> 2316_LIBCPP_CONSTEXPR_AFTER_CXX17 2317basic_string<_CharT, _Traits, _Allocator>::~basic_string() 2318{ 2319 std::__debug_db_erase_c(this); 2320 if (__is_long()) 2321 __alloc_traits::deallocate(__alloc(), __get_long_pointer(), __get_long_cap()); 2322} 2323 2324template <class _CharT, class _Traits, class _Allocator> 2325_LIBCPP_CONSTEXPR_AFTER_CXX17 2326void 2327basic_string<_CharT, _Traits, _Allocator>::__grow_by_and_replace 2328 (size_type __old_cap, size_type __delta_cap, size_type __old_sz, 2329 size_type __n_copy, size_type __n_del, size_type __n_add, const value_type* __p_new_stuff) 2330{ 2331 size_type __ms = max_size(); 2332 if (__delta_cap > __ms - __old_cap - 1) 2333 __throw_length_error(); 2334 pointer __old_p = __get_pointer(); 2335 size_type __cap = __old_cap < __ms / 2 - __alignment ? 2336 __recommend(std::max(__old_cap + __delta_cap, 2 * __old_cap)) : 2337 __ms - 1; 2338 auto __allocation = std::__allocate_at_least(__alloc(), __cap + 1); 2339 pointer __p = __allocation.ptr; 2340 __begin_lifetime(__p, __allocation.count); 2341 std::__debug_db_invalidate_all(this); 2342 if (__n_copy != 0) 2343 traits_type::copy(std::__to_address(__p), 2344 std::__to_address(__old_p), __n_copy); 2345 if (__n_add != 0) 2346 traits_type::copy(std::__to_address(__p) + __n_copy, __p_new_stuff, __n_add); 2347 size_type __sec_cp_sz = __old_sz - __n_del - __n_copy; 2348 if (__sec_cp_sz != 0) 2349 traits_type::copy(std::__to_address(__p) + __n_copy + __n_add, 2350 std::__to_address(__old_p) + __n_copy + __n_del, __sec_cp_sz); 2351 if (__old_cap+1 != __min_cap || __libcpp_is_constant_evaluated()) 2352 __alloc_traits::deallocate(__alloc(), __old_p, __old_cap+1); 2353 __set_long_pointer(__p); 2354 __set_long_cap(__allocation.count); 2355 __old_sz = __n_copy + __n_add + __sec_cp_sz; 2356 __set_long_size(__old_sz); 2357 traits_type::assign(__p[__old_sz], value_type()); 2358} 2359 2360template <class _CharT, class _Traits, class _Allocator> 2361void 2362_LIBCPP_CONSTEXPR_AFTER_CXX17 2363basic_string<_CharT, _Traits, _Allocator>::__grow_by(size_type __old_cap, size_type __delta_cap, size_type __old_sz, 2364 size_type __n_copy, size_type __n_del, size_type __n_add) 2365{ 2366 size_type __ms = max_size(); 2367 if (__delta_cap > __ms - __old_cap) 2368 __throw_length_error(); 2369 pointer __old_p = __get_pointer(); 2370 size_type __cap = __old_cap < __ms / 2 - __alignment ? 2371 __recommend(std::max(__old_cap + __delta_cap, 2 * __old_cap)) : 2372 __ms - 1; 2373 auto __allocation = std::__allocate_at_least(__alloc(), __cap + 1); 2374 pointer __p = __allocation.ptr; 2375 __begin_lifetime(__p, __allocation.count); 2376 std::__debug_db_invalidate_all(this); 2377 if (__n_copy != 0) 2378 traits_type::copy(std::__to_address(__p), 2379 std::__to_address(__old_p), __n_copy); 2380 size_type __sec_cp_sz = __old_sz - __n_del - __n_copy; 2381 if (__sec_cp_sz != 0) 2382 traits_type::copy(std::__to_address(__p) + __n_copy + __n_add, 2383 std::__to_address(__old_p) + __n_copy + __n_del, 2384 __sec_cp_sz); 2385 if (__libcpp_is_constant_evaluated() || __old_cap + 1 != __min_cap) 2386 __alloc_traits::deallocate(__alloc(), __old_p, __old_cap + 1); 2387 __set_long_pointer(__p); 2388 __set_long_cap(__allocation.count); 2389} 2390 2391// assign 2392 2393template <class _CharT, class _Traits, class _Allocator> 2394template <bool __is_short> 2395_LIBCPP_CONSTEXPR_AFTER_CXX17 2396basic_string<_CharT, _Traits, _Allocator>& 2397basic_string<_CharT, _Traits, _Allocator>::__assign_no_alias( 2398 const value_type* __s, size_type __n) { 2399 size_type __cap = __is_short ? static_cast<size_type>(__min_cap) : __get_long_cap(); 2400 if (__n < __cap) { 2401 pointer __p = __is_short ? __get_short_pointer() : __get_long_pointer(); 2402 __is_short ? __set_short_size(__n) : __set_long_size(__n); 2403 traits_type::copy(std::__to_address(__p), __s, __n); 2404 traits_type::assign(__p[__n], value_type()); 2405 __invalidate_iterators_past(__n); 2406 } else { 2407 size_type __sz = __is_short ? __get_short_size() : __get_long_size(); 2408 __grow_by_and_replace(__cap - 1, __n - __cap + 1, __sz, 0, __sz, __n, __s); 2409 } 2410 return *this; 2411} 2412 2413template <class _CharT, class _Traits, class _Allocator> 2414_LIBCPP_CONSTEXPR_AFTER_CXX17 2415basic_string<_CharT, _Traits, _Allocator>& 2416basic_string<_CharT, _Traits, _Allocator>::__assign_external( 2417 const value_type* __s, size_type __n) { 2418 size_type __cap = capacity(); 2419 if (__cap >= __n) { 2420 value_type* __p = std::__to_address(__get_pointer()); 2421 traits_type::move(__p, __s, __n); 2422 return __null_terminate_at(__p, __n); 2423 } else { 2424 size_type __sz = size(); 2425 __grow_by_and_replace(__cap, __n - __cap, __sz, 0, __sz, __n, __s); 2426 return *this; 2427 } 2428} 2429 2430template <class _CharT, class _Traits, class _Allocator> 2431_LIBCPP_CONSTEXPR_AFTER_CXX17 2432basic_string<_CharT, _Traits, _Allocator>& 2433basic_string<_CharT, _Traits, _Allocator>::assign(const value_type* __s, size_type __n) 2434{ 2435 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::assign received nullptr"); 2436 return (__builtin_constant_p(__n) && __fits_in_sso(__n)) 2437 ? __assign_short(__s, __n) 2438 : __assign_external(__s, __n); 2439} 2440 2441template <class _CharT, class _Traits, class _Allocator> 2442_LIBCPP_CONSTEXPR_AFTER_CXX17 2443basic_string<_CharT, _Traits, _Allocator>& 2444basic_string<_CharT, _Traits, _Allocator>::assign(size_type __n, value_type __c) 2445{ 2446 size_type __cap = capacity(); 2447 if (__cap < __n) 2448 { 2449 size_type __sz = size(); 2450 __grow_by(__cap, __n - __cap, __sz, 0, __sz); 2451 } 2452 value_type* __p = std::__to_address(__get_pointer()); 2453 traits_type::assign(__p, __n, __c); 2454 return __null_terminate_at(__p, __n); 2455} 2456 2457template <class _CharT, class _Traits, class _Allocator> 2458_LIBCPP_CONSTEXPR_AFTER_CXX17 2459basic_string<_CharT, _Traits, _Allocator>& 2460basic_string<_CharT, _Traits, _Allocator>::operator=(value_type __c) 2461{ 2462 pointer __p; 2463 if (__is_long()) 2464 { 2465 __p = __get_long_pointer(); 2466 __set_long_size(1); 2467 } 2468 else 2469 { 2470 __p = __get_short_pointer(); 2471 __set_short_size(1); 2472 } 2473 traits_type::assign(*__p, __c); 2474 traits_type::assign(*++__p, value_type()); 2475 __invalidate_iterators_past(1); 2476 return *this; 2477} 2478 2479template <class _CharT, class _Traits, class _Allocator> 2480_LIBCPP_CONSTEXPR_AFTER_CXX17 2481basic_string<_CharT, _Traits, _Allocator>& 2482basic_string<_CharT, _Traits, _Allocator>::operator=(const basic_string& __str) 2483{ 2484 if (this != &__str) { 2485 __copy_assign_alloc(__str); 2486 if (!__is_long()) { 2487 if (!__str.__is_long()) { 2488 __r_.first().__r = __str.__r_.first().__r; 2489 } else { 2490 return __assign_no_alias<true>(__str.data(), __str.size()); 2491 } 2492 } else { 2493 return __assign_no_alias<false>(__str.data(), __str.size()); 2494 } 2495 } 2496 return *this; 2497} 2498 2499#ifndef _LIBCPP_CXX03_LANG 2500 2501template <class _CharT, class _Traits, class _Allocator> 2502inline _LIBCPP_CONSTEXPR_AFTER_CXX17 2503void 2504basic_string<_CharT, _Traits, _Allocator>::__move_assign(basic_string& __str, false_type) 2505 _NOEXCEPT_(__alloc_traits::is_always_equal::value) 2506{ 2507 if (__alloc() != __str.__alloc()) 2508 assign(__str); 2509 else 2510 __move_assign(__str, true_type()); 2511} 2512 2513template <class _CharT, class _Traits, class _Allocator> 2514inline _LIBCPP_CONSTEXPR_AFTER_CXX17 2515void 2516basic_string<_CharT, _Traits, _Allocator>::__move_assign(basic_string& __str, true_type) 2517#if _LIBCPP_STD_VER > 14 2518 _NOEXCEPT 2519#else 2520 _NOEXCEPT_(is_nothrow_move_assignable<allocator_type>::value) 2521#endif 2522{ 2523 if (__is_long()) { 2524 __alloc_traits::deallocate(__alloc(), __get_long_pointer(), 2525 __get_long_cap()); 2526#if _LIBCPP_STD_VER <= 14 2527 if (!is_nothrow_move_assignable<allocator_type>::value) { 2528 __set_short_size(0); 2529 traits_type::assign(__get_short_pointer()[0], value_type()); 2530 } 2531#endif 2532 } 2533 __move_assign_alloc(__str); 2534 __r_.first() = __str.__r_.first(); 2535 if (__libcpp_is_constant_evaluated()) { 2536 __str.__default_init(); 2537 } else { 2538 __str.__set_short_size(0); 2539 traits_type::assign(__str.__get_short_pointer()[0], value_type()); 2540 } 2541} 2542 2543template <class _CharT, class _Traits, class _Allocator> 2544inline _LIBCPP_CONSTEXPR_AFTER_CXX17 2545basic_string<_CharT, _Traits, _Allocator>& 2546basic_string<_CharT, _Traits, _Allocator>::operator=(basic_string&& __str) 2547 _NOEXCEPT_((__noexcept_move_assign_container<_Allocator, __alloc_traits>::value)) 2548{ 2549 __move_assign(__str, integral_constant<bool, 2550 __alloc_traits::propagate_on_container_move_assignment::value>()); 2551 return *this; 2552} 2553 2554#endif 2555 2556template <class _CharT, class _Traits, class _Allocator> 2557template<class _InputIterator> 2558_LIBCPP_CONSTEXPR_AFTER_CXX17 2559__enable_if_t 2560< 2561 __is_exactly_cpp17_input_iterator<_InputIterator>::value, 2562 basic_string<_CharT, _Traits, _Allocator>& 2563> 2564basic_string<_CharT, _Traits, _Allocator>::assign(_InputIterator __first, _InputIterator __last) 2565{ 2566 const basic_string __temp(__first, __last, __alloc()); 2567 assign(__temp.data(), __temp.size()); 2568 return *this; 2569} 2570 2571template <class _CharT, class _Traits, class _Allocator> 2572template<class _ForwardIterator> 2573_LIBCPP_CONSTEXPR_AFTER_CXX17 2574__enable_if_t 2575< 2576 __is_cpp17_forward_iterator<_ForwardIterator>::value, 2577 basic_string<_CharT, _Traits, _Allocator>& 2578> 2579basic_string<_CharT, _Traits, _Allocator>::assign(_ForwardIterator __first, _ForwardIterator __last) 2580{ 2581 size_type __cap = capacity(); 2582 size_type __n = __string_is_trivial_iterator<_ForwardIterator>::value ? 2583 static_cast<size_type>(std::distance(__first, __last)) : 0; 2584 2585 if (__string_is_trivial_iterator<_ForwardIterator>::value && 2586 (__cap >= __n || !__addr_in_range(*__first))) 2587 { 2588 if (__cap < __n) 2589 { 2590 size_type __sz = size(); 2591 __grow_by(__cap, __n - __cap, __sz, 0, __sz); 2592 } 2593 pointer __p = __get_pointer(); 2594 for (; __first != __last; ++__p, (void) ++__first) 2595 traits_type::assign(*__p, *__first); 2596 traits_type::assign(*__p, value_type()); 2597 __set_size(__n); 2598 __invalidate_iterators_past(__n); 2599 } 2600 else 2601 { 2602 const basic_string __temp(__first, __last, __alloc()); 2603 assign(__temp.data(), __temp.size()); 2604 } 2605 return *this; 2606} 2607 2608template <class _CharT, class _Traits, class _Allocator> 2609_LIBCPP_CONSTEXPR_AFTER_CXX17 2610basic_string<_CharT, _Traits, _Allocator>& 2611basic_string<_CharT, _Traits, _Allocator>::assign(const basic_string& __str, size_type __pos, size_type __n) 2612{ 2613 size_type __sz = __str.size(); 2614 if (__pos > __sz) 2615 __throw_out_of_range(); 2616 return assign(__str.data() + __pos, std::min(__n, __sz - __pos)); 2617} 2618 2619template <class _CharT, class _Traits, class _Allocator> 2620template <class _Tp> 2621_LIBCPP_CONSTEXPR_AFTER_CXX17 2622__enable_if_t 2623< 2624 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value 2625 && !__is_same_uncvref<_Tp, basic_string<_CharT, _Traits, _Allocator> >::value, 2626 basic_string<_CharT, _Traits, _Allocator>& 2627> 2628basic_string<_CharT, _Traits, _Allocator>::assign(const _Tp & __t, size_type __pos, size_type __n) 2629{ 2630 __self_view __sv = __t; 2631 size_type __sz = __sv.size(); 2632 if (__pos > __sz) 2633 __throw_out_of_range(); 2634 return assign(__sv.data() + __pos, std::min(__n, __sz - __pos)); 2635} 2636 2637 2638template <class _CharT, class _Traits, class _Allocator> 2639_LIBCPP_CONSTEXPR_AFTER_CXX17 2640basic_string<_CharT, _Traits, _Allocator>& 2641basic_string<_CharT, _Traits, _Allocator>::__assign_external(const value_type* __s) { 2642 return __assign_external(__s, traits_type::length(__s)); 2643} 2644 2645template <class _CharT, class _Traits, class _Allocator> 2646_LIBCPP_CONSTEXPR_AFTER_CXX17 2647basic_string<_CharT, _Traits, _Allocator>& 2648basic_string<_CharT, _Traits, _Allocator>::assign(const value_type* __s) 2649{ 2650 _LIBCPP_ASSERT(__s != nullptr, "string::assign received nullptr"); 2651 return __builtin_constant_p(*__s) 2652 ? (__fits_in_sso(traits_type::length(__s)) 2653 ? __assign_short(__s, traits_type::length(__s)) 2654 : __assign_external(__s, traits_type::length(__s))) 2655 : __assign_external(__s); 2656} 2657// append 2658 2659template <class _CharT, class _Traits, class _Allocator> 2660_LIBCPP_CONSTEXPR_AFTER_CXX17 2661basic_string<_CharT, _Traits, _Allocator>& 2662basic_string<_CharT, _Traits, _Allocator>::append(const value_type* __s, size_type __n) 2663{ 2664 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::append received nullptr"); 2665 size_type __cap = capacity(); 2666 size_type __sz = size(); 2667 if (__cap - __sz >= __n) 2668 { 2669 if (__n) 2670 { 2671 value_type* __p = std::__to_address(__get_pointer()); 2672 traits_type::copy(__p + __sz, __s, __n); 2673 __sz += __n; 2674 __set_size(__sz); 2675 traits_type::assign(__p[__sz], value_type()); 2676 } 2677 } 2678 else 2679 __grow_by_and_replace(__cap, __sz + __n - __cap, __sz, __sz, 0, __n, __s); 2680 return *this; 2681} 2682 2683template <class _CharT, class _Traits, class _Allocator> 2684_LIBCPP_CONSTEXPR_AFTER_CXX17 2685basic_string<_CharT, _Traits, _Allocator>& 2686basic_string<_CharT, _Traits, _Allocator>::append(size_type __n, value_type __c) 2687{ 2688 if (__n) 2689 { 2690 size_type __cap = capacity(); 2691 size_type __sz = size(); 2692 if (__cap - __sz < __n) 2693 __grow_by(__cap, __sz + __n - __cap, __sz, __sz, 0); 2694 pointer __p = __get_pointer(); 2695 traits_type::assign(std::__to_address(__p) + __sz, __n, __c); 2696 __sz += __n; 2697 __set_size(__sz); 2698 traits_type::assign(__p[__sz], value_type()); 2699 } 2700 return *this; 2701} 2702 2703template <class _CharT, class _Traits, class _Allocator> 2704_LIBCPP_CONSTEXPR_AFTER_CXX17 inline void 2705basic_string<_CharT, _Traits, _Allocator>::__append_default_init(size_type __n) 2706{ 2707 if (__n) 2708 { 2709 size_type __cap = capacity(); 2710 size_type __sz = size(); 2711 if (__cap - __sz < __n) 2712 __grow_by(__cap, __sz + __n - __cap, __sz, __sz, 0); 2713 pointer __p = __get_pointer(); 2714 __sz += __n; 2715 __set_size(__sz); 2716 traits_type::assign(__p[__sz], value_type()); 2717 } 2718} 2719 2720template <class _CharT, class _Traits, class _Allocator> 2721_LIBCPP_CONSTEXPR_AFTER_CXX17 2722void 2723basic_string<_CharT, _Traits, _Allocator>::push_back(value_type __c) 2724{ 2725 bool __is_short = !__is_long(); 2726 size_type __cap; 2727 size_type __sz; 2728 if (__is_short) 2729 { 2730 __cap = __min_cap - 1; 2731 __sz = __get_short_size(); 2732 } 2733 else 2734 { 2735 __cap = __get_long_cap() - 1; 2736 __sz = __get_long_size(); 2737 } 2738 if (__sz == __cap) 2739 { 2740 __grow_by(__cap, 1, __sz, __sz, 0); 2741 __is_short = false; // the string is always long after __grow_by 2742 } 2743 pointer __p = __get_pointer(); 2744 if (__is_short) 2745 { 2746 __p = __get_short_pointer() + __sz; 2747 __set_short_size(__sz+1); 2748 } 2749 else 2750 { 2751 __p = __get_long_pointer() + __sz; 2752 __set_long_size(__sz+1); 2753 } 2754 traits_type::assign(*__p, __c); 2755 traits_type::assign(*++__p, value_type()); 2756} 2757 2758template <class _CharT, class _Traits, class _Allocator> 2759template<class _ForwardIterator> 2760_LIBCPP_CONSTEXPR_AFTER_CXX17 2761__enable_if_t 2762< 2763 __is_cpp17_forward_iterator<_ForwardIterator>::value, 2764 basic_string<_CharT, _Traits, _Allocator>& 2765> 2766basic_string<_CharT, _Traits, _Allocator>::append( 2767 _ForwardIterator __first, _ForwardIterator __last) 2768{ 2769 size_type __sz = size(); 2770 size_type __cap = capacity(); 2771 size_type __n = static_cast<size_type>(std::distance(__first, __last)); 2772 if (__n) 2773 { 2774 if (__string_is_trivial_iterator<_ForwardIterator>::value && 2775 !__addr_in_range(*__first)) 2776 { 2777 if (__cap - __sz < __n) 2778 __grow_by(__cap, __sz + __n - __cap, __sz, __sz, 0); 2779 pointer __p = __get_pointer() + __sz; 2780 for (; __first != __last; ++__p, (void) ++__first) 2781 traits_type::assign(*__p, *__first); 2782 traits_type::assign(*__p, value_type()); 2783 __set_size(__sz + __n); 2784 } 2785 else 2786 { 2787 const basic_string __temp(__first, __last, __alloc()); 2788 append(__temp.data(), __temp.size()); 2789 } 2790 } 2791 return *this; 2792} 2793 2794template <class _CharT, class _Traits, class _Allocator> 2795inline _LIBCPP_CONSTEXPR_AFTER_CXX17 2796basic_string<_CharT, _Traits, _Allocator>& 2797basic_string<_CharT, _Traits, _Allocator>::append(const basic_string& __str) 2798{ 2799 return append(__str.data(), __str.size()); 2800} 2801 2802template <class _CharT, class _Traits, class _Allocator> 2803_LIBCPP_CONSTEXPR_AFTER_CXX17 2804basic_string<_CharT, _Traits, _Allocator>& 2805basic_string<_CharT, _Traits, _Allocator>::append(const basic_string& __str, size_type __pos, size_type __n) 2806{ 2807 size_type __sz = __str.size(); 2808 if (__pos > __sz) 2809 __throw_out_of_range(); 2810 return append(__str.data() + __pos, std::min(__n, __sz - __pos)); 2811} 2812 2813template <class _CharT, class _Traits, class _Allocator> 2814template <class _Tp> 2815_LIBCPP_CONSTEXPR_AFTER_CXX17 2816 __enable_if_t 2817 < 2818 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value && !__is_same_uncvref<_Tp, basic_string<_CharT, _Traits, _Allocator> >::value, 2819 basic_string<_CharT, _Traits, _Allocator>& 2820 > 2821basic_string<_CharT, _Traits, _Allocator>::append(const _Tp & __t, size_type __pos, size_type __n) 2822{ 2823 __self_view __sv = __t; 2824 size_type __sz = __sv.size(); 2825 if (__pos > __sz) 2826 __throw_out_of_range(); 2827 return append(__sv.data() + __pos, std::min(__n, __sz - __pos)); 2828} 2829 2830template <class _CharT, class _Traits, class _Allocator> 2831_LIBCPP_CONSTEXPR_AFTER_CXX17 2832basic_string<_CharT, _Traits, _Allocator>& 2833basic_string<_CharT, _Traits, _Allocator>::append(const value_type* __s) 2834{ 2835 _LIBCPP_ASSERT(__s != nullptr, "string::append received nullptr"); 2836 return append(__s, traits_type::length(__s)); 2837} 2838 2839// insert 2840 2841template <class _CharT, class _Traits, class _Allocator> 2842_LIBCPP_CONSTEXPR_AFTER_CXX17 2843basic_string<_CharT, _Traits, _Allocator>& 2844basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos, const value_type* __s, size_type __n) 2845{ 2846 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::insert received nullptr"); 2847 size_type __sz = size(); 2848 if (__pos > __sz) 2849 __throw_out_of_range(); 2850 size_type __cap = capacity(); 2851 if (__libcpp_is_constant_evaluated()) { 2852 if (__cap - __sz >= __n) 2853 __grow_by_and_replace(__cap, 0, __sz, __pos, 0, __n, __s); 2854 else 2855 __grow_by_and_replace(__cap, __sz + __n - __cap, __sz, __pos, 0, __n, __s); 2856 return *this; 2857 } 2858 if (__cap - __sz >= __n) 2859 { 2860 if (__n) 2861 { 2862 value_type* __p = std::__to_address(__get_pointer()); 2863 size_type __n_move = __sz - __pos; 2864 if (__n_move != 0) 2865 { 2866 if (__p + __pos <= __s && __s < __p + __sz) 2867 __s += __n; 2868 traits_type::move(__p + __pos + __n, __p + __pos, __n_move); 2869 } 2870 traits_type::move(__p + __pos, __s, __n); 2871 __sz += __n; 2872 __set_size(__sz); 2873 traits_type::assign(__p[__sz], value_type()); 2874 } 2875 } 2876 else 2877 __grow_by_and_replace(__cap, __sz + __n - __cap, __sz, __pos, 0, __n, __s); 2878 return *this; 2879} 2880 2881template <class _CharT, class _Traits, class _Allocator> 2882_LIBCPP_CONSTEXPR_AFTER_CXX17 2883basic_string<_CharT, _Traits, _Allocator>& 2884basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos, size_type __n, value_type __c) 2885{ 2886 size_type __sz = size(); 2887 if (__pos > __sz) 2888 __throw_out_of_range(); 2889 if (__n) 2890 { 2891 size_type __cap = capacity(); 2892 value_type* __p; 2893 if (__cap - __sz >= __n) 2894 { 2895 __p = std::__to_address(__get_pointer()); 2896 size_type __n_move = __sz - __pos; 2897 if (__n_move != 0) 2898 traits_type::move(__p + __pos + __n, __p + __pos, __n_move); 2899 } 2900 else 2901 { 2902 __grow_by(__cap, __sz + __n - __cap, __sz, __pos, 0, __n); 2903 __p = std::__to_address(__get_long_pointer()); 2904 } 2905 traits_type::assign(__p + __pos, __n, __c); 2906 __sz += __n; 2907 __set_size(__sz); 2908 traits_type::assign(__p[__sz], value_type()); 2909 } 2910 return *this; 2911} 2912 2913template <class _CharT, class _Traits, class _Allocator> 2914template<class _InputIterator> 2915_LIBCPP_CONSTEXPR_AFTER_CXX17 2916__enable_if_t 2917< 2918 __is_exactly_cpp17_input_iterator<_InputIterator>::value, 2919 typename basic_string<_CharT, _Traits, _Allocator>::iterator 2920> 2921basic_string<_CharT, _Traits, _Allocator>::insert(const_iterator __pos, _InputIterator __first, _InputIterator __last) 2922{ 2923 _LIBCPP_DEBUG_ASSERT(__get_const_db()->__find_c_from_i(&__pos) == this, 2924 "string::insert(iterator, range) called with an iterator not" 2925 " referring to this string"); 2926 const basic_string __temp(__first, __last, __alloc()); 2927 return insert(__pos, __temp.data(), __temp.data() + __temp.size()); 2928} 2929 2930template <class _CharT, class _Traits, class _Allocator> 2931template<class _ForwardIterator> 2932_LIBCPP_CONSTEXPR_AFTER_CXX17 2933__enable_if_t 2934< 2935 __is_cpp17_forward_iterator<_ForwardIterator>::value, 2936 typename basic_string<_CharT, _Traits, _Allocator>::iterator 2937> 2938basic_string<_CharT, _Traits, _Allocator>::insert(const_iterator __pos, _ForwardIterator __first, _ForwardIterator __last) 2939{ 2940 _LIBCPP_DEBUG_ASSERT(__get_const_db()->__find_c_from_i(&__pos) == this, 2941 "string::insert(iterator, range) called with an iterator not referring to this string"); 2942 2943 size_type __ip = static_cast<size_type>(__pos - begin()); 2944 size_type __n = static_cast<size_type>(std::distance(__first, __last)); 2945 if (__n == 0) 2946 return begin() + __ip; 2947 2948 if (__string_is_trivial_iterator<_ForwardIterator>::value && !__addr_in_range(*__first)) 2949 { 2950 return __insert_from_safe_copy(__n, __ip, __first, __last); 2951 } 2952 else 2953 { 2954 const basic_string __temp(__first, __last, __alloc()); 2955 return __insert_from_safe_copy(__n, __ip, __temp.begin(), __temp.end()); 2956 } 2957} 2958 2959template <class _CharT, class _Traits, class _Allocator> 2960inline _LIBCPP_CONSTEXPR_AFTER_CXX17 2961basic_string<_CharT, _Traits, _Allocator>& 2962basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos1, const basic_string& __str) 2963{ 2964 return insert(__pos1, __str.data(), __str.size()); 2965} 2966 2967template <class _CharT, class _Traits, class _Allocator> 2968_LIBCPP_CONSTEXPR_AFTER_CXX17 2969basic_string<_CharT, _Traits, _Allocator>& 2970basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos1, const basic_string& __str, 2971 size_type __pos2, size_type __n) 2972{ 2973 size_type __str_sz = __str.size(); 2974 if (__pos2 > __str_sz) 2975 __throw_out_of_range(); 2976 return insert(__pos1, __str.data() + __pos2, std::min(__n, __str_sz - __pos2)); 2977} 2978 2979template <class _CharT, class _Traits, class _Allocator> 2980template <class _Tp> 2981_LIBCPP_CONSTEXPR_AFTER_CXX17 2982__enable_if_t 2983< 2984 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value && !__is_same_uncvref<_Tp, basic_string<_CharT, _Traits, _Allocator> >::value, 2985 basic_string<_CharT, _Traits, _Allocator>& 2986> 2987basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos1, const _Tp& __t, 2988 size_type __pos2, size_type __n) 2989{ 2990 __self_view __sv = __t; 2991 size_type __str_sz = __sv.size(); 2992 if (__pos2 > __str_sz) 2993 __throw_out_of_range(); 2994 return insert(__pos1, __sv.data() + __pos2, std::min(__n, __str_sz - __pos2)); 2995} 2996 2997template <class _CharT, class _Traits, class _Allocator> 2998_LIBCPP_CONSTEXPR_AFTER_CXX17 2999basic_string<_CharT, _Traits, _Allocator>& 3000basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos, const value_type* __s) 3001{ 3002 _LIBCPP_ASSERT(__s != nullptr, "string::insert received nullptr"); 3003 return insert(__pos, __s, traits_type::length(__s)); 3004} 3005 3006template <class _CharT, class _Traits, class _Allocator> 3007_LIBCPP_CONSTEXPR_AFTER_CXX17 3008typename basic_string<_CharT, _Traits, _Allocator>::iterator 3009basic_string<_CharT, _Traits, _Allocator>::insert(const_iterator __pos, value_type __c) 3010{ 3011 _LIBCPP_DEBUG_ASSERT(__get_const_db()->__find_c_from_i(&__pos) == this, 3012 "string::insert(iterator, character) called with an iterator not" 3013 " referring to this string"); 3014 3015 size_type __ip = static_cast<size_type>(__pos - begin()); 3016 size_type __sz = size(); 3017 size_type __cap = capacity(); 3018 value_type* __p; 3019 if (__cap == __sz) 3020 { 3021 __grow_by(__cap, 1, __sz, __ip, 0, 1); 3022 __p = std::__to_address(__get_long_pointer()); 3023 } 3024 else 3025 { 3026 __p = std::__to_address(__get_pointer()); 3027 size_type __n_move = __sz - __ip; 3028 if (__n_move != 0) 3029 traits_type::move(__p + __ip + 1, __p + __ip, __n_move); 3030 } 3031 traits_type::assign(__p[__ip], __c); 3032 traits_type::assign(__p[++__sz], value_type()); 3033 __set_size(__sz); 3034 return begin() + static_cast<difference_type>(__ip); 3035} 3036 3037template <class _CharT, class _Traits, class _Allocator> 3038inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3039typename basic_string<_CharT, _Traits, _Allocator>::iterator 3040basic_string<_CharT, _Traits, _Allocator>::insert(const_iterator __pos, size_type __n, value_type __c) 3041{ 3042 _LIBCPP_DEBUG_ASSERT(__get_const_db()->__find_c_from_i(&__pos) == this, 3043 "string::insert(iterator, n, value) called with an iterator not" 3044 " referring to this string"); 3045 difference_type __p = __pos - begin(); 3046 insert(static_cast<size_type>(__p), __n, __c); 3047 return begin() + __p; 3048} 3049 3050// replace 3051 3052template <class _CharT, class _Traits, class _Allocator> 3053_LIBCPP_CONSTEXPR_AFTER_CXX17 3054basic_string<_CharT, _Traits, _Allocator>& 3055basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos, size_type __n1, const value_type* __s, size_type __n2) 3056 _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK 3057{ 3058 _LIBCPP_ASSERT(__n2 == 0 || __s != nullptr, "string::replace received nullptr"); 3059 size_type __sz = size(); 3060 if (__pos > __sz) 3061 __throw_out_of_range(); 3062 __n1 = std::min(__n1, __sz - __pos); 3063 size_type __cap = capacity(); 3064 if (__cap - __sz + __n1 >= __n2) 3065 { 3066 if (__libcpp_is_constant_evaluated()) { 3067 __grow_by_and_replace(__cap, 0, __sz, __pos, __n1, __n2, __s); 3068 return *this; 3069 } 3070 value_type* __p = std::__to_address(__get_pointer()); 3071 if (__n1 != __n2) 3072 { 3073 size_type __n_move = __sz - __pos - __n1; 3074 if (__n_move != 0) 3075 { 3076 if (__n1 > __n2) 3077 { 3078 traits_type::move(__p + __pos, __s, __n2); 3079 traits_type::move(__p + __pos + __n2, __p + __pos + __n1, __n_move); 3080 return __null_terminate_at(__p, __sz + (__n2 - __n1)); 3081 } 3082 if (__p + __pos < __s && __s < __p + __sz) 3083 { 3084 if (__p + __pos + __n1 <= __s) 3085 __s += __n2 - __n1; 3086 else // __p + __pos < __s < __p + __pos + __n1 3087 { 3088 traits_type::move(__p + __pos, __s, __n1); 3089 __pos += __n1; 3090 __s += __n2; 3091 __n2 -= __n1; 3092 __n1 = 0; 3093 } 3094 } 3095 traits_type::move(__p + __pos + __n2, __p + __pos + __n1, __n_move); 3096 } 3097 } 3098 traits_type::move(__p + __pos, __s, __n2); 3099 return __null_terminate_at(__p, __sz + (__n2 - __n1)); 3100 } 3101 else 3102 __grow_by_and_replace(__cap, __sz - __n1 + __n2 - __cap, __sz, __pos, __n1, __n2, __s); 3103 return *this; 3104} 3105 3106template <class _CharT, class _Traits, class _Allocator> 3107_LIBCPP_CONSTEXPR_AFTER_CXX17 3108basic_string<_CharT, _Traits, _Allocator>& 3109basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos, size_type __n1, size_type __n2, value_type __c) 3110{ 3111 size_type __sz = size(); 3112 if (__pos > __sz) 3113 __throw_out_of_range(); 3114 __n1 = std::min(__n1, __sz - __pos); 3115 size_type __cap = capacity(); 3116 value_type* __p; 3117 if (__cap - __sz + __n1 >= __n2) 3118 { 3119 __p = std::__to_address(__get_pointer()); 3120 if (__n1 != __n2) 3121 { 3122 size_type __n_move = __sz - __pos - __n1; 3123 if (__n_move != 0) 3124 traits_type::move(__p + __pos + __n2, __p + __pos + __n1, __n_move); 3125 } 3126 } 3127 else 3128 { 3129 __grow_by(__cap, __sz - __n1 + __n2 - __cap, __sz, __pos, __n1, __n2); 3130 __p = std::__to_address(__get_long_pointer()); 3131 } 3132 traits_type::assign(__p + __pos, __n2, __c); 3133 return __null_terminate_at(__p, __sz - (__n1 - __n2)); 3134} 3135 3136template <class _CharT, class _Traits, class _Allocator> 3137template<class _InputIterator> 3138_LIBCPP_CONSTEXPR_AFTER_CXX17 3139__enable_if_t 3140< 3141 __is_cpp17_input_iterator<_InputIterator>::value, 3142 basic_string<_CharT, _Traits, _Allocator>& 3143> 3144basic_string<_CharT, _Traits, _Allocator>::replace(const_iterator __i1, const_iterator __i2, 3145 _InputIterator __j1, _InputIterator __j2) 3146{ 3147 const basic_string __temp(__j1, __j2, __alloc()); 3148 return replace(__i1, __i2, __temp); 3149} 3150 3151template <class _CharT, class _Traits, class _Allocator> 3152inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3153basic_string<_CharT, _Traits, _Allocator>& 3154basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos1, size_type __n1, const basic_string& __str) 3155{ 3156 return replace(__pos1, __n1, __str.data(), __str.size()); 3157} 3158 3159template <class _CharT, class _Traits, class _Allocator> 3160_LIBCPP_CONSTEXPR_AFTER_CXX17 3161basic_string<_CharT, _Traits, _Allocator>& 3162basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos1, size_type __n1, const basic_string& __str, 3163 size_type __pos2, size_type __n2) 3164{ 3165 size_type __str_sz = __str.size(); 3166 if (__pos2 > __str_sz) 3167 __throw_out_of_range(); 3168 return replace(__pos1, __n1, __str.data() + __pos2, std::min(__n2, __str_sz - __pos2)); 3169} 3170 3171template <class _CharT, class _Traits, class _Allocator> 3172template <class _Tp> 3173_LIBCPP_CONSTEXPR_AFTER_CXX17 3174__enable_if_t 3175< 3176 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value && !__is_same_uncvref<_Tp, basic_string<_CharT, _Traits, _Allocator> >::value, 3177 basic_string<_CharT, _Traits, _Allocator>& 3178> 3179basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos1, size_type __n1, const _Tp& __t, 3180 size_type __pos2, size_type __n2) 3181{ 3182 __self_view __sv = __t; 3183 size_type __str_sz = __sv.size(); 3184 if (__pos2 > __str_sz) 3185 __throw_out_of_range(); 3186 return replace(__pos1, __n1, __sv.data() + __pos2, std::min(__n2, __str_sz - __pos2)); 3187} 3188 3189template <class _CharT, class _Traits, class _Allocator> 3190_LIBCPP_CONSTEXPR_AFTER_CXX17 3191basic_string<_CharT, _Traits, _Allocator>& 3192basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos, size_type __n1, const value_type* __s) 3193{ 3194 _LIBCPP_ASSERT(__s != nullptr, "string::replace received nullptr"); 3195 return replace(__pos, __n1, __s, traits_type::length(__s)); 3196} 3197 3198template <class _CharT, class _Traits, class _Allocator> 3199inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3200basic_string<_CharT, _Traits, _Allocator>& 3201basic_string<_CharT, _Traits, _Allocator>::replace(const_iterator __i1, const_iterator __i2, const basic_string& __str) 3202{ 3203 return replace(static_cast<size_type>(__i1 - begin()), static_cast<size_type>(__i2 - __i1), 3204 __str.data(), __str.size()); 3205} 3206 3207template <class _CharT, class _Traits, class _Allocator> 3208inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3209basic_string<_CharT, _Traits, _Allocator>& 3210basic_string<_CharT, _Traits, _Allocator>::replace(const_iterator __i1, const_iterator __i2, const value_type* __s, size_type __n) 3211{ 3212 return replace(static_cast<size_type>(__i1 - begin()), static_cast<size_type>(__i2 - __i1), __s, __n); 3213} 3214 3215template <class _CharT, class _Traits, class _Allocator> 3216inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3217basic_string<_CharT, _Traits, _Allocator>& 3218basic_string<_CharT, _Traits, _Allocator>::replace(const_iterator __i1, const_iterator __i2, const value_type* __s) 3219{ 3220 return replace(static_cast<size_type>(__i1 - begin()), static_cast<size_type>(__i2 - __i1), __s); 3221} 3222 3223template <class _CharT, class _Traits, class _Allocator> 3224inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3225basic_string<_CharT, _Traits, _Allocator>& 3226basic_string<_CharT, _Traits, _Allocator>::replace(const_iterator __i1, const_iterator __i2, size_type __n, value_type __c) 3227{ 3228 return replace(static_cast<size_type>(__i1 - begin()), static_cast<size_type>(__i2 - __i1), __n, __c); 3229} 3230 3231// erase 3232 3233// 'externally instantiated' erase() implementation, called when __n != npos. 3234// Does not check __pos against size() 3235template <class _CharT, class _Traits, class _Allocator> 3236_LIBCPP_CONSTEXPR_AFTER_CXX17 3237void 3238basic_string<_CharT, _Traits, _Allocator>::__erase_external_with_move( 3239 size_type __pos, size_type __n) 3240{ 3241 if (__n) 3242 { 3243 size_type __sz = size(); 3244 value_type* __p = std::__to_address(__get_pointer()); 3245 __n = std::min(__n, __sz - __pos); 3246 size_type __n_move = __sz - __pos - __n; 3247 if (__n_move != 0) 3248 traits_type::move(__p + __pos, __p + __pos + __n, __n_move); 3249 __null_terminate_at(__p, __sz - __n); 3250 } 3251} 3252 3253template <class _CharT, class _Traits, class _Allocator> 3254_LIBCPP_CONSTEXPR_AFTER_CXX17 3255basic_string<_CharT, _Traits, _Allocator>& 3256basic_string<_CharT, _Traits, _Allocator>::erase(size_type __pos, 3257 size_type __n) { 3258 if (__pos > size()) 3259 __throw_out_of_range(); 3260 if (__n == npos) { 3261 __erase_to_end(__pos); 3262 } else { 3263 __erase_external_with_move(__pos, __n); 3264 } 3265 return *this; 3266} 3267 3268template <class _CharT, class _Traits, class _Allocator> 3269inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3270typename basic_string<_CharT, _Traits, _Allocator>::iterator 3271basic_string<_CharT, _Traits, _Allocator>::erase(const_iterator __pos) 3272{ 3273 _LIBCPP_DEBUG_ASSERT(__get_const_db()->__find_c_from_i(&__pos) == this, 3274 "string::erase(iterator) called with an iterator not" 3275 " referring to this string"); 3276 3277 _LIBCPP_ASSERT(__pos != end(), "string::erase(iterator) called with a non-dereferenceable iterator"); 3278 iterator __b = begin(); 3279 size_type __r = static_cast<size_type>(__pos - __b); 3280 erase(__r, 1); 3281 return __b + static_cast<difference_type>(__r); 3282} 3283 3284template <class _CharT, class _Traits, class _Allocator> 3285inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3286typename basic_string<_CharT, _Traits, _Allocator>::iterator 3287basic_string<_CharT, _Traits, _Allocator>::erase(const_iterator __first, const_iterator __last) 3288{ 3289 _LIBCPP_DEBUG_ASSERT(__get_const_db()->__find_c_from_i(&__first) == this, 3290 "string::erase(iterator, iterator) called with an iterator not" 3291 " referring to this string"); 3292 3293 _LIBCPP_ASSERT(__first <= __last, "string::erase(first, last) called with invalid range"); 3294 iterator __b = begin(); 3295 size_type __r = static_cast<size_type>(__first - __b); 3296 erase(__r, static_cast<size_type>(__last - __first)); 3297 return __b + static_cast<difference_type>(__r); 3298} 3299 3300template <class _CharT, class _Traits, class _Allocator> 3301inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3302void 3303basic_string<_CharT, _Traits, _Allocator>::pop_back() 3304{ 3305 _LIBCPP_ASSERT(!empty(), "string::pop_back(): string is already empty"); 3306 __erase_to_end(size() - 1); 3307} 3308 3309template <class _CharT, class _Traits, class _Allocator> 3310inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3311void 3312basic_string<_CharT, _Traits, _Allocator>::clear() _NOEXCEPT 3313{ 3314 std::__debug_db_invalidate_all(this); 3315 if (__is_long()) 3316 { 3317 traits_type::assign(*__get_long_pointer(), value_type()); 3318 __set_long_size(0); 3319 } 3320 else 3321 { 3322 traits_type::assign(*__get_short_pointer(), value_type()); 3323 __set_short_size(0); 3324 } 3325} 3326 3327template <class _CharT, class _Traits, class _Allocator> 3328inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3329void 3330basic_string<_CharT, _Traits, _Allocator>::__erase_to_end(size_type __pos) 3331{ 3332 __null_terminate_at(std::__to_address(__get_pointer()), __pos); 3333} 3334 3335template <class _CharT, class _Traits, class _Allocator> 3336_LIBCPP_CONSTEXPR_AFTER_CXX17 3337void 3338basic_string<_CharT, _Traits, _Allocator>::resize(size_type __n, value_type __c) 3339{ 3340 size_type __sz = size(); 3341 if (__n > __sz) 3342 append(__n - __sz, __c); 3343 else 3344 __erase_to_end(__n); 3345} 3346 3347template <class _CharT, class _Traits, class _Allocator> 3348_LIBCPP_CONSTEXPR_AFTER_CXX17 inline void 3349basic_string<_CharT, _Traits, _Allocator>::__resize_default_init(size_type __n) 3350{ 3351 size_type __sz = size(); 3352 if (__n > __sz) { 3353 __append_default_init(__n - __sz); 3354 } else 3355 __erase_to_end(__n); 3356} 3357 3358template <class _CharT, class _Traits, class _Allocator> 3359inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3360typename basic_string<_CharT, _Traits, _Allocator>::size_type 3361basic_string<_CharT, _Traits, _Allocator>::max_size() const _NOEXCEPT 3362{ 3363 size_type __m = __alloc_traits::max_size(__alloc()); 3364 if (__m <= std::numeric_limits<size_type>::max() / 2) { 3365 return __m - __alignment; 3366 } else { 3367 bool __uses_lsb = __endian_factor == 2; 3368 return __uses_lsb ? __m - __alignment : (__m / 2) - __alignment; 3369 } 3370} 3371 3372template <class _CharT, class _Traits, class _Allocator> 3373_LIBCPP_CONSTEXPR_AFTER_CXX17 3374void 3375basic_string<_CharT, _Traits, _Allocator>::reserve(size_type __requested_capacity) 3376{ 3377 if (__requested_capacity > max_size()) 3378 __throw_length_error(); 3379 3380 // Make sure reserve(n) never shrinks. This is technically only required in C++20 3381 // and later (since P0966R1), however we provide consistent behavior in all Standard 3382 // modes because this function is instantiated in the shared library. 3383 if (__requested_capacity <= capacity()) 3384 return; 3385 3386 size_type __target_capacity = std::max(__requested_capacity, size()); 3387 __target_capacity = __recommend(__target_capacity); 3388 if (__target_capacity == capacity()) return; 3389 3390 __shrink_or_extend(__target_capacity); 3391} 3392 3393template <class _CharT, class _Traits, class _Allocator> 3394inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3395void 3396basic_string<_CharT, _Traits, _Allocator>::shrink_to_fit() _NOEXCEPT 3397{ 3398 size_type __target_capacity = __recommend(size()); 3399 if (__target_capacity == capacity()) return; 3400 3401 __shrink_or_extend(__target_capacity); 3402} 3403 3404template <class _CharT, class _Traits, class _Allocator> 3405inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3406void 3407basic_string<_CharT, _Traits, _Allocator>::__shrink_or_extend(size_type __target_capacity) 3408{ 3409 size_type __cap = capacity(); 3410 size_type __sz = size(); 3411 3412 pointer __new_data, __p; 3413 bool __was_long, __now_long; 3414 if (__fits_in_sso(__target_capacity)) 3415 { 3416 __was_long = true; 3417 __now_long = false; 3418 __new_data = __get_short_pointer(); 3419 __p = __get_long_pointer(); 3420 } 3421 else 3422 { 3423 if (__target_capacity > __cap) { 3424 auto __allocation = std::__allocate_at_least(__alloc(), __target_capacity + 1); 3425 __new_data = __allocation.ptr; 3426 __target_capacity = __allocation.count - 1; 3427 } 3428 else 3429 { 3430 #ifndef _LIBCPP_NO_EXCEPTIONS 3431 try 3432 { 3433 #endif // _LIBCPP_NO_EXCEPTIONS 3434 auto __allocation = std::__allocate_at_least(__alloc(), __target_capacity + 1); 3435 __new_data = __allocation.ptr; 3436 __target_capacity = __allocation.count - 1; 3437 #ifndef _LIBCPP_NO_EXCEPTIONS 3438 } 3439 catch (...) 3440 { 3441 return; 3442 } 3443 #else // _LIBCPP_NO_EXCEPTIONS 3444 if (__new_data == nullptr) 3445 return; 3446 #endif // _LIBCPP_NO_EXCEPTIONS 3447 } 3448 __begin_lifetime(__new_data, __target_capacity + 1); 3449 __now_long = true; 3450 __was_long = __is_long(); 3451 __p = __get_pointer(); 3452 } 3453 traits_type::copy(std::__to_address(__new_data), 3454 std::__to_address(__p), size()+1); 3455 if (__was_long) 3456 __alloc_traits::deallocate(__alloc(), __p, __cap+1); 3457 if (__now_long) 3458 { 3459 __set_long_cap(__target_capacity+1); 3460 __set_long_size(__sz); 3461 __set_long_pointer(__new_data); 3462 } 3463 else 3464 __set_short_size(__sz); 3465 std::__debug_db_invalidate_all(this); 3466} 3467 3468template <class _CharT, class _Traits, class _Allocator> 3469inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3470typename basic_string<_CharT, _Traits, _Allocator>::const_reference 3471basic_string<_CharT, _Traits, _Allocator>::operator[](size_type __pos) const _NOEXCEPT 3472{ 3473 _LIBCPP_ASSERT(__pos <= size(), "string index out of bounds"); 3474 return *(data() + __pos); 3475} 3476 3477template <class _CharT, class _Traits, class _Allocator> 3478inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3479typename basic_string<_CharT, _Traits, _Allocator>::reference 3480basic_string<_CharT, _Traits, _Allocator>::operator[](size_type __pos) _NOEXCEPT 3481{ 3482 _LIBCPP_ASSERT(__pos <= size(), "string index out of bounds"); 3483 return *(__get_pointer() + __pos); 3484} 3485 3486template <class _CharT, class _Traits, class _Allocator> 3487_LIBCPP_CONSTEXPR_AFTER_CXX17 3488typename basic_string<_CharT, _Traits, _Allocator>::const_reference 3489basic_string<_CharT, _Traits, _Allocator>::at(size_type __n) const 3490{ 3491 if (__n >= size()) 3492 __throw_out_of_range(); 3493 return (*this)[__n]; 3494} 3495 3496template <class _CharT, class _Traits, class _Allocator> 3497_LIBCPP_CONSTEXPR_AFTER_CXX17 3498typename basic_string<_CharT, _Traits, _Allocator>::reference 3499basic_string<_CharT, _Traits, _Allocator>::at(size_type __n) 3500{ 3501 if (__n >= size()) 3502 __throw_out_of_range(); 3503 return (*this)[__n]; 3504} 3505 3506template <class _CharT, class _Traits, class _Allocator> 3507inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3508typename basic_string<_CharT, _Traits, _Allocator>::reference 3509basic_string<_CharT, _Traits, _Allocator>::front() _NOEXCEPT 3510{ 3511 _LIBCPP_ASSERT(!empty(), "string::front(): string is empty"); 3512 return *__get_pointer(); 3513} 3514 3515template <class _CharT, class _Traits, class _Allocator> 3516inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3517typename basic_string<_CharT, _Traits, _Allocator>::const_reference 3518basic_string<_CharT, _Traits, _Allocator>::front() const _NOEXCEPT 3519{ 3520 _LIBCPP_ASSERT(!empty(), "string::front(): string is empty"); 3521 return *data(); 3522} 3523 3524template <class _CharT, class _Traits, class _Allocator> 3525inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3526typename basic_string<_CharT, _Traits, _Allocator>::reference 3527basic_string<_CharT, _Traits, _Allocator>::back() _NOEXCEPT 3528{ 3529 _LIBCPP_ASSERT(!empty(), "string::back(): string is empty"); 3530 return *(__get_pointer() + size() - 1); 3531} 3532 3533template <class _CharT, class _Traits, class _Allocator> 3534inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3535typename basic_string<_CharT, _Traits, _Allocator>::const_reference 3536basic_string<_CharT, _Traits, _Allocator>::back() const _NOEXCEPT 3537{ 3538 _LIBCPP_ASSERT(!empty(), "string::back(): string is empty"); 3539 return *(data() + size() - 1); 3540} 3541 3542template <class _CharT, class _Traits, class _Allocator> 3543_LIBCPP_CONSTEXPR_AFTER_CXX17 3544typename basic_string<_CharT, _Traits, _Allocator>::size_type 3545basic_string<_CharT, _Traits, _Allocator>::copy(value_type* __s, size_type __n, size_type __pos) const 3546{ 3547 size_type __sz = size(); 3548 if (__pos > __sz) 3549 __throw_out_of_range(); 3550 size_type __rlen = std::min(__n, __sz - __pos); 3551 traits_type::copy(__s, data() + __pos, __rlen); 3552 return __rlen; 3553} 3554 3555template <class _CharT, class _Traits, class _Allocator> 3556inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3557basic_string<_CharT, _Traits, _Allocator> 3558basic_string<_CharT, _Traits, _Allocator>::substr(size_type __pos, size_type __n) const 3559{ 3560 return basic_string(*this, __pos, __n, __alloc()); 3561} 3562 3563template <class _CharT, class _Traits, class _Allocator> 3564inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3565void 3566basic_string<_CharT, _Traits, _Allocator>::swap(basic_string& __str) 3567#if _LIBCPP_STD_VER >= 14 3568 _NOEXCEPT 3569#else 3570 _NOEXCEPT_(!__alloc_traits::propagate_on_container_swap::value || 3571 __is_nothrow_swappable<allocator_type>::value) 3572#endif 3573{ 3574 if (!__is_long()) 3575 std::__debug_db_invalidate_all(this); 3576 if (!__str.__is_long()) 3577 std::__debug_db_invalidate_all(&__str); 3578 std::__debug_db_swap(this, &__str); 3579 3580 _LIBCPP_ASSERT( 3581 __alloc_traits::propagate_on_container_swap::value || 3582 __alloc_traits::is_always_equal::value || 3583 __alloc() == __str.__alloc(), "swapping non-equal allocators"); 3584 std::swap(__r_.first(), __str.__r_.first()); 3585 std::__swap_allocator(__alloc(), __str.__alloc()); 3586} 3587 3588// find 3589 3590template <class _Traits> 3591struct _LIBCPP_HIDDEN __traits_eq 3592{ 3593 typedef typename _Traits::char_type char_type; 3594 _LIBCPP_HIDE_FROM_ABI 3595 bool operator()(const char_type& __x, const char_type& __y) _NOEXCEPT 3596 {return _Traits::eq(__x, __y);} 3597}; 3598 3599template<class _CharT, class _Traits, class _Allocator> 3600_LIBCPP_CONSTEXPR_AFTER_CXX17 3601typename basic_string<_CharT, _Traits, _Allocator>::size_type 3602basic_string<_CharT, _Traits, _Allocator>::find(const value_type* __s, 3603 size_type __pos, 3604 size_type __n) const _NOEXCEPT 3605{ 3606 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::find(): received nullptr"); 3607 return __str_find<value_type, size_type, traits_type, npos> 3608 (data(), size(), __s, __pos, __n); 3609} 3610 3611template<class _CharT, class _Traits, class _Allocator> 3612inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3613typename basic_string<_CharT, _Traits, _Allocator>::size_type 3614basic_string<_CharT, _Traits, _Allocator>::find(const basic_string& __str, 3615 size_type __pos) const _NOEXCEPT 3616{ 3617 return __str_find<value_type, size_type, traits_type, npos> 3618 (data(), size(), __str.data(), __pos, __str.size()); 3619} 3620 3621template<class _CharT, class _Traits, class _Allocator> 3622template <class _Tp> 3623_LIBCPP_CONSTEXPR_AFTER_CXX17 3624__enable_if_t 3625< 3626 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3627 typename basic_string<_CharT, _Traits, _Allocator>::size_type 3628> 3629basic_string<_CharT, _Traits, _Allocator>::find(const _Tp &__t, 3630 size_type __pos) const _NOEXCEPT 3631{ 3632 __self_view __sv = __t; 3633 return __str_find<value_type, size_type, traits_type, npos> 3634 (data(), size(), __sv.data(), __pos, __sv.size()); 3635} 3636 3637template<class _CharT, class _Traits, class _Allocator> 3638inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3639typename basic_string<_CharT, _Traits, _Allocator>::size_type 3640basic_string<_CharT, _Traits, _Allocator>::find(const value_type* __s, 3641 size_type __pos) const _NOEXCEPT 3642{ 3643 _LIBCPP_ASSERT(__s != nullptr, "string::find(): received nullptr"); 3644 return __str_find<value_type, size_type, traits_type, npos> 3645 (data(), size(), __s, __pos, traits_type::length(__s)); 3646} 3647 3648template<class _CharT, class _Traits, class _Allocator> 3649_LIBCPP_CONSTEXPR_AFTER_CXX17 3650typename basic_string<_CharT, _Traits, _Allocator>::size_type 3651basic_string<_CharT, _Traits, _Allocator>::find(value_type __c, 3652 size_type __pos) const _NOEXCEPT 3653{ 3654 return __str_find<value_type, size_type, traits_type, npos> 3655 (data(), size(), __c, __pos); 3656} 3657 3658// rfind 3659 3660template<class _CharT, class _Traits, class _Allocator> 3661_LIBCPP_CONSTEXPR_AFTER_CXX17 3662typename basic_string<_CharT, _Traits, _Allocator>::size_type 3663basic_string<_CharT, _Traits, _Allocator>::rfind(const value_type* __s, 3664 size_type __pos, 3665 size_type __n) const _NOEXCEPT 3666{ 3667 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::rfind(): received nullptr"); 3668 return __str_rfind<value_type, size_type, traits_type, npos> 3669 (data(), size(), __s, __pos, __n); 3670} 3671 3672template<class _CharT, class _Traits, class _Allocator> 3673inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3674typename basic_string<_CharT, _Traits, _Allocator>::size_type 3675basic_string<_CharT, _Traits, _Allocator>::rfind(const basic_string& __str, 3676 size_type __pos) const _NOEXCEPT 3677{ 3678 return __str_rfind<value_type, size_type, traits_type, npos> 3679 (data(), size(), __str.data(), __pos, __str.size()); 3680} 3681 3682template<class _CharT, class _Traits, class _Allocator> 3683template <class _Tp> 3684_LIBCPP_CONSTEXPR_AFTER_CXX17 3685__enable_if_t 3686< 3687 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3688 typename basic_string<_CharT, _Traits, _Allocator>::size_type 3689> 3690basic_string<_CharT, _Traits, _Allocator>::rfind(const _Tp& __t, 3691 size_type __pos) const _NOEXCEPT 3692{ 3693 __self_view __sv = __t; 3694 return __str_rfind<value_type, size_type, traits_type, npos> 3695 (data(), size(), __sv.data(), __pos, __sv.size()); 3696} 3697 3698template<class _CharT, class _Traits, class _Allocator> 3699inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3700typename basic_string<_CharT, _Traits, _Allocator>::size_type 3701basic_string<_CharT, _Traits, _Allocator>::rfind(const value_type* __s, 3702 size_type __pos) const _NOEXCEPT 3703{ 3704 _LIBCPP_ASSERT(__s != nullptr, "string::rfind(): received nullptr"); 3705 return __str_rfind<value_type, size_type, traits_type, npos> 3706 (data(), size(), __s, __pos, traits_type::length(__s)); 3707} 3708 3709template<class _CharT, class _Traits, class _Allocator> 3710_LIBCPP_CONSTEXPR_AFTER_CXX17 3711typename basic_string<_CharT, _Traits, _Allocator>::size_type 3712basic_string<_CharT, _Traits, _Allocator>::rfind(value_type __c, 3713 size_type __pos) const _NOEXCEPT 3714{ 3715 return __str_rfind<value_type, size_type, traits_type, npos> 3716 (data(), size(), __c, __pos); 3717} 3718 3719// find_first_of 3720 3721template<class _CharT, class _Traits, class _Allocator> 3722_LIBCPP_CONSTEXPR_AFTER_CXX17 3723typename basic_string<_CharT, _Traits, _Allocator>::size_type 3724basic_string<_CharT, _Traits, _Allocator>::find_first_of(const value_type* __s, 3725 size_type __pos, 3726 size_type __n) const _NOEXCEPT 3727{ 3728 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::find_first_of(): received nullptr"); 3729 return __str_find_first_of<value_type, size_type, traits_type, npos> 3730 (data(), size(), __s, __pos, __n); 3731} 3732 3733template<class _CharT, class _Traits, class _Allocator> 3734inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3735typename basic_string<_CharT, _Traits, _Allocator>::size_type 3736basic_string<_CharT, _Traits, _Allocator>::find_first_of(const basic_string& __str, 3737 size_type __pos) const _NOEXCEPT 3738{ 3739 return __str_find_first_of<value_type, size_type, traits_type, npos> 3740 (data(), size(), __str.data(), __pos, __str.size()); 3741} 3742 3743template<class _CharT, class _Traits, class _Allocator> 3744template <class _Tp> 3745_LIBCPP_CONSTEXPR_AFTER_CXX17 3746__enable_if_t 3747< 3748 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3749 typename basic_string<_CharT, _Traits, _Allocator>::size_type 3750> 3751basic_string<_CharT, _Traits, _Allocator>::find_first_of(const _Tp& __t, 3752 size_type __pos) const _NOEXCEPT 3753{ 3754 __self_view __sv = __t; 3755 return __str_find_first_of<value_type, size_type, traits_type, npos> 3756 (data(), size(), __sv.data(), __pos, __sv.size()); 3757} 3758 3759template<class _CharT, class _Traits, class _Allocator> 3760inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3761typename basic_string<_CharT, _Traits, _Allocator>::size_type 3762basic_string<_CharT, _Traits, _Allocator>::find_first_of(const value_type* __s, 3763 size_type __pos) const _NOEXCEPT 3764{ 3765 _LIBCPP_ASSERT(__s != nullptr, "string::find_first_of(): received nullptr"); 3766 return __str_find_first_of<value_type, size_type, traits_type, npos> 3767 (data(), size(), __s, __pos, traits_type::length(__s)); 3768} 3769 3770template<class _CharT, class _Traits, class _Allocator> 3771inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3772typename basic_string<_CharT, _Traits, _Allocator>::size_type 3773basic_string<_CharT, _Traits, _Allocator>::find_first_of(value_type __c, 3774 size_type __pos) const _NOEXCEPT 3775{ 3776 return find(__c, __pos); 3777} 3778 3779// find_last_of 3780 3781template<class _CharT, class _Traits, class _Allocator> 3782inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3783typename basic_string<_CharT, _Traits, _Allocator>::size_type 3784basic_string<_CharT, _Traits, _Allocator>::find_last_of(const value_type* __s, 3785 size_type __pos, 3786 size_type __n) const _NOEXCEPT 3787{ 3788 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::find_last_of(): received nullptr"); 3789 return __str_find_last_of<value_type, size_type, traits_type, npos> 3790 (data(), size(), __s, __pos, __n); 3791} 3792 3793template<class _CharT, class _Traits, class _Allocator> 3794inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3795typename basic_string<_CharT, _Traits, _Allocator>::size_type 3796basic_string<_CharT, _Traits, _Allocator>::find_last_of(const basic_string& __str, 3797 size_type __pos) const _NOEXCEPT 3798{ 3799 return __str_find_last_of<value_type, size_type, traits_type, npos> 3800 (data(), size(), __str.data(), __pos, __str.size()); 3801} 3802 3803template<class _CharT, class _Traits, class _Allocator> 3804template <class _Tp> 3805_LIBCPP_CONSTEXPR_AFTER_CXX17 3806__enable_if_t 3807< 3808 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3809 typename basic_string<_CharT, _Traits, _Allocator>::size_type 3810> 3811basic_string<_CharT, _Traits, _Allocator>::find_last_of(const _Tp& __t, 3812 size_type __pos) const _NOEXCEPT 3813{ 3814 __self_view __sv = __t; 3815 return __str_find_last_of<value_type, size_type, traits_type, npos> 3816 (data(), size(), __sv.data(), __pos, __sv.size()); 3817} 3818 3819template<class _CharT, class _Traits, class _Allocator> 3820inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3821typename basic_string<_CharT, _Traits, _Allocator>::size_type 3822basic_string<_CharT, _Traits, _Allocator>::find_last_of(const value_type* __s, 3823 size_type __pos) const _NOEXCEPT 3824{ 3825 _LIBCPP_ASSERT(__s != nullptr, "string::find_last_of(): received nullptr"); 3826 return __str_find_last_of<value_type, size_type, traits_type, npos> 3827 (data(), size(), __s, __pos, traits_type::length(__s)); 3828} 3829 3830template<class _CharT, class _Traits, class _Allocator> 3831inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3832typename basic_string<_CharT, _Traits, _Allocator>::size_type 3833basic_string<_CharT, _Traits, _Allocator>::find_last_of(value_type __c, 3834 size_type __pos) const _NOEXCEPT 3835{ 3836 return rfind(__c, __pos); 3837} 3838 3839// find_first_not_of 3840 3841template<class _CharT, class _Traits, class _Allocator> 3842_LIBCPP_CONSTEXPR_AFTER_CXX17 3843typename basic_string<_CharT, _Traits, _Allocator>::size_type 3844basic_string<_CharT, _Traits, _Allocator>::find_first_not_of(const value_type* __s, 3845 size_type __pos, 3846 size_type __n) const _NOEXCEPT 3847{ 3848 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::find_first_not_of(): received nullptr"); 3849 return __str_find_first_not_of<value_type, size_type, traits_type, npos> 3850 (data(), size(), __s, __pos, __n); 3851} 3852 3853template<class _CharT, class _Traits, class _Allocator> 3854inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3855typename basic_string<_CharT, _Traits, _Allocator>::size_type 3856basic_string<_CharT, _Traits, _Allocator>::find_first_not_of(const basic_string& __str, 3857 size_type __pos) const _NOEXCEPT 3858{ 3859 return __str_find_first_not_of<value_type, size_type, traits_type, npos> 3860 (data(), size(), __str.data(), __pos, __str.size()); 3861} 3862 3863template<class _CharT, class _Traits, class _Allocator> 3864template <class _Tp> 3865_LIBCPP_CONSTEXPR_AFTER_CXX17 3866__enable_if_t 3867< 3868 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3869 typename basic_string<_CharT, _Traits, _Allocator>::size_type 3870> 3871basic_string<_CharT, _Traits, _Allocator>::find_first_not_of(const _Tp& __t, 3872 size_type __pos) const _NOEXCEPT 3873{ 3874 __self_view __sv = __t; 3875 return __str_find_first_not_of<value_type, size_type, traits_type, npos> 3876 (data(), size(), __sv.data(), __pos, __sv.size()); 3877} 3878 3879template<class _CharT, class _Traits, class _Allocator> 3880inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3881typename basic_string<_CharT, _Traits, _Allocator>::size_type 3882basic_string<_CharT, _Traits, _Allocator>::find_first_not_of(const value_type* __s, 3883 size_type __pos) const _NOEXCEPT 3884{ 3885 _LIBCPP_ASSERT(__s != nullptr, "string::find_first_not_of(): received nullptr"); 3886 return __str_find_first_not_of<value_type, size_type, traits_type, npos> 3887 (data(), size(), __s, __pos, traits_type::length(__s)); 3888} 3889 3890template<class _CharT, class _Traits, class _Allocator> 3891inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3892typename basic_string<_CharT, _Traits, _Allocator>::size_type 3893basic_string<_CharT, _Traits, _Allocator>::find_first_not_of(value_type __c, 3894 size_type __pos) const _NOEXCEPT 3895{ 3896 return __str_find_first_not_of<value_type, size_type, traits_type, npos> 3897 (data(), size(), __c, __pos); 3898} 3899 3900// find_last_not_of 3901 3902template<class _CharT, class _Traits, class _Allocator> 3903_LIBCPP_CONSTEXPR_AFTER_CXX17 3904typename basic_string<_CharT, _Traits, _Allocator>::size_type 3905basic_string<_CharT, _Traits, _Allocator>::find_last_not_of(const value_type* __s, 3906 size_type __pos, 3907 size_type __n) const _NOEXCEPT 3908{ 3909 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::find_last_not_of(): received nullptr"); 3910 return __str_find_last_not_of<value_type, size_type, traits_type, npos> 3911 (data(), size(), __s, __pos, __n); 3912} 3913 3914template<class _CharT, class _Traits, class _Allocator> 3915inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3916typename basic_string<_CharT, _Traits, _Allocator>::size_type 3917basic_string<_CharT, _Traits, _Allocator>::find_last_not_of(const basic_string& __str, 3918 size_type __pos) const _NOEXCEPT 3919{ 3920 return __str_find_last_not_of<value_type, size_type, traits_type, npos> 3921 (data(), size(), __str.data(), __pos, __str.size()); 3922} 3923 3924template<class _CharT, class _Traits, class _Allocator> 3925template <class _Tp> 3926_LIBCPP_CONSTEXPR_AFTER_CXX17 3927__enable_if_t 3928< 3929 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3930 typename basic_string<_CharT, _Traits, _Allocator>::size_type 3931> 3932basic_string<_CharT, _Traits, _Allocator>::find_last_not_of(const _Tp& __t, 3933 size_type __pos) const _NOEXCEPT 3934{ 3935 __self_view __sv = __t; 3936 return __str_find_last_not_of<value_type, size_type, traits_type, npos> 3937 (data(), size(), __sv.data(), __pos, __sv.size()); 3938} 3939 3940template<class _CharT, class _Traits, class _Allocator> 3941inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3942typename basic_string<_CharT, _Traits, _Allocator>::size_type 3943basic_string<_CharT, _Traits, _Allocator>::find_last_not_of(const value_type* __s, 3944 size_type __pos) const _NOEXCEPT 3945{ 3946 _LIBCPP_ASSERT(__s != nullptr, "string::find_last_not_of(): received nullptr"); 3947 return __str_find_last_not_of<value_type, size_type, traits_type, npos> 3948 (data(), size(), __s, __pos, traits_type::length(__s)); 3949} 3950 3951template<class _CharT, class _Traits, class _Allocator> 3952inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3953typename basic_string<_CharT, _Traits, _Allocator>::size_type 3954basic_string<_CharT, _Traits, _Allocator>::find_last_not_of(value_type __c, 3955 size_type __pos) const _NOEXCEPT 3956{ 3957 return __str_find_last_not_of<value_type, size_type, traits_type, npos> 3958 (data(), size(), __c, __pos); 3959} 3960 3961// compare 3962 3963template <class _CharT, class _Traits, class _Allocator> 3964template <class _Tp> 3965_LIBCPP_CONSTEXPR_AFTER_CXX17 3966__enable_if_t 3967< 3968 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3969 int 3970> 3971basic_string<_CharT, _Traits, _Allocator>::compare(const _Tp& __t) const _NOEXCEPT 3972{ 3973 __self_view __sv = __t; 3974 size_t __lhs_sz = size(); 3975 size_t __rhs_sz = __sv.size(); 3976 int __result = traits_type::compare(data(), __sv.data(), 3977 std::min(__lhs_sz, __rhs_sz)); 3978 if (__result != 0) 3979 return __result; 3980 if (__lhs_sz < __rhs_sz) 3981 return -1; 3982 if (__lhs_sz > __rhs_sz) 3983 return 1; 3984 return 0; 3985} 3986 3987template <class _CharT, class _Traits, class _Allocator> 3988inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3989int 3990basic_string<_CharT, _Traits, _Allocator>::compare(const basic_string& __str) const _NOEXCEPT 3991{ 3992 return compare(__self_view(__str)); 3993} 3994 3995template <class _CharT, class _Traits, class _Allocator> 3996inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3997int 3998basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1, 3999 size_type __n1, 4000 const value_type* __s, 4001 size_type __n2) const 4002{ 4003 _LIBCPP_ASSERT(__n2 == 0 || __s != nullptr, "string::compare(): received nullptr"); 4004 size_type __sz = size(); 4005 if (__pos1 > __sz || __n2 == npos) 4006 __throw_out_of_range(); 4007 size_type __rlen = std::min(__n1, __sz - __pos1); 4008 int __r = traits_type::compare(data() + __pos1, __s, std::min(__rlen, __n2)); 4009 if (__r == 0) 4010 { 4011 if (__rlen < __n2) 4012 __r = -1; 4013 else if (__rlen > __n2) 4014 __r = 1; 4015 } 4016 return __r; 4017} 4018 4019template <class _CharT, class _Traits, class _Allocator> 4020template <class _Tp> 4021_LIBCPP_CONSTEXPR_AFTER_CXX17 4022__enable_if_t 4023< 4024 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 4025 int 4026> 4027basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1, 4028 size_type __n1, 4029 const _Tp& __t) const 4030{ 4031 __self_view __sv = __t; 4032 return compare(__pos1, __n1, __sv.data(), __sv.size()); 4033} 4034 4035template <class _CharT, class _Traits, class _Allocator> 4036inline _LIBCPP_CONSTEXPR_AFTER_CXX17 4037int 4038basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1, 4039 size_type __n1, 4040 const basic_string& __str) const 4041{ 4042 return compare(__pos1, __n1, __str.data(), __str.size()); 4043} 4044 4045template <class _CharT, class _Traits, class _Allocator> 4046template <class _Tp> 4047_LIBCPP_CONSTEXPR_AFTER_CXX17 4048__enable_if_t 4049< 4050 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value 4051 && !__is_same_uncvref<_Tp, basic_string<_CharT, _Traits, _Allocator> >::value, 4052 int 4053> 4054basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1, 4055 size_type __n1, 4056 const _Tp& __t, 4057 size_type __pos2, 4058 size_type __n2) const 4059{ 4060 __self_view __sv = __t; 4061 return __self_view(*this).substr(__pos1, __n1).compare(__sv.substr(__pos2, __n2)); 4062} 4063 4064template <class _CharT, class _Traits, class _Allocator> 4065_LIBCPP_CONSTEXPR_AFTER_CXX17 4066int 4067basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1, 4068 size_type __n1, 4069 const basic_string& __str, 4070 size_type __pos2, 4071 size_type __n2) const 4072{ 4073 return compare(__pos1, __n1, __self_view(__str), __pos2, __n2); 4074} 4075 4076template <class _CharT, class _Traits, class _Allocator> 4077_LIBCPP_CONSTEXPR_AFTER_CXX17 4078int 4079basic_string<_CharT, _Traits, _Allocator>::compare(const value_type* __s) const _NOEXCEPT 4080{ 4081 _LIBCPP_ASSERT(__s != nullptr, "string::compare(): received nullptr"); 4082 return compare(0, npos, __s, traits_type::length(__s)); 4083} 4084 4085template <class _CharT, class _Traits, class _Allocator> 4086_LIBCPP_CONSTEXPR_AFTER_CXX17 4087int 4088basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1, 4089 size_type __n1, 4090 const value_type* __s) const 4091{ 4092 _LIBCPP_ASSERT(__s != nullptr, "string::compare(): received nullptr"); 4093 return compare(__pos1, __n1, __s, traits_type::length(__s)); 4094} 4095 4096// __invariants 4097 4098template<class _CharT, class _Traits, class _Allocator> 4099inline _LIBCPP_CONSTEXPR_AFTER_CXX17 4100bool 4101basic_string<_CharT, _Traits, _Allocator>::__invariants() const 4102{ 4103 if (size() > capacity()) 4104 return false; 4105 if (capacity() < __min_cap - 1) 4106 return false; 4107 if (data() == nullptr) 4108 return false; 4109 if (data()[size()] != value_type()) 4110 return false; 4111 return true; 4112} 4113 4114// __clear_and_shrink 4115 4116template<class _CharT, class _Traits, class _Allocator> 4117inline _LIBCPP_CONSTEXPR_AFTER_CXX17 4118void 4119basic_string<_CharT, _Traits, _Allocator>::__clear_and_shrink() _NOEXCEPT 4120{ 4121 clear(); 4122 if(__is_long()) 4123 { 4124 __alloc_traits::deallocate(__alloc(), __get_long_pointer(), capacity() + 1); 4125 __set_long_cap(0); 4126 __set_short_size(0); 4127 traits_type::assign(*__get_short_pointer(), value_type()); 4128 } 4129} 4130 4131// operator== 4132 4133template<class _CharT, class _Traits, class _Allocator> 4134inline _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI 4135bool 4136operator==(const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4137 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4138{ 4139 size_t __lhs_sz = __lhs.size(); 4140 return __lhs_sz == __rhs.size() && _Traits::compare(__lhs.data(), 4141 __rhs.data(), 4142 __lhs_sz) == 0; 4143} 4144 4145template<class _Allocator> 4146inline _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI 4147bool 4148operator==(const basic_string<char, char_traits<char>, _Allocator>& __lhs, 4149 const basic_string<char, char_traits<char>, _Allocator>& __rhs) _NOEXCEPT 4150{ 4151 size_t __lhs_sz = __lhs.size(); 4152 if (__lhs_sz != __rhs.size()) 4153 return false; 4154 const char* __lp = __lhs.data(); 4155 const char* __rp = __rhs.data(); 4156 if (__lhs.__is_long()) 4157 return char_traits<char>::compare(__lp, __rp, __lhs_sz) == 0; 4158 for (; __lhs_sz != 0; --__lhs_sz, ++__lp, ++__rp) 4159 if (*__lp != *__rp) 4160 return false; 4161 return true; 4162} 4163 4164template<class _CharT, class _Traits, class _Allocator> 4165inline _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI 4166bool 4167operator==(const _CharT* __lhs, 4168 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4169{ 4170 typedef basic_string<_CharT, _Traits, _Allocator> _String; 4171 _LIBCPP_ASSERT(__lhs != nullptr, "operator==(char*, basic_string): received nullptr"); 4172 size_t __lhs_len = _Traits::length(__lhs); 4173 if (__lhs_len != __rhs.size()) return false; 4174 return __rhs.compare(0, _String::npos, __lhs, __lhs_len) == 0; 4175} 4176 4177template<class _CharT, class _Traits, class _Allocator> 4178inline _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI 4179bool 4180operator==(const basic_string<_CharT,_Traits,_Allocator>& __lhs, 4181 const _CharT* __rhs) _NOEXCEPT 4182{ 4183 typedef basic_string<_CharT, _Traits, _Allocator> _String; 4184 _LIBCPP_ASSERT(__rhs != nullptr, "operator==(basic_string, char*): received nullptr"); 4185 size_t __rhs_len = _Traits::length(__rhs); 4186 if (__rhs_len != __lhs.size()) return false; 4187 return __lhs.compare(0, _String::npos, __rhs, __rhs_len) == 0; 4188} 4189 4190template<class _CharT, class _Traits, class _Allocator> 4191inline _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI 4192bool 4193operator!=(const basic_string<_CharT,_Traits,_Allocator>& __lhs, 4194 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4195{ 4196 return !(__lhs == __rhs); 4197} 4198 4199template<class _CharT, class _Traits, class _Allocator> 4200inline _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI 4201bool 4202operator!=(const _CharT* __lhs, 4203 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4204{ 4205 return !(__lhs == __rhs); 4206} 4207 4208template<class _CharT, class _Traits, class _Allocator> 4209inline _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI 4210bool 4211operator!=(const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4212 const _CharT* __rhs) _NOEXCEPT 4213{ 4214 return !(__lhs == __rhs); 4215} 4216 4217// operator< 4218 4219template<class _CharT, class _Traits, class _Allocator> 4220inline _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI 4221bool 4222operator< (const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4223 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4224{ 4225 return __lhs.compare(__rhs) < 0; 4226} 4227 4228template<class _CharT, class _Traits, class _Allocator> 4229inline _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI 4230bool 4231operator< (const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4232 const _CharT* __rhs) _NOEXCEPT 4233{ 4234 return __lhs.compare(__rhs) < 0; 4235} 4236 4237template<class _CharT, class _Traits, class _Allocator> 4238inline _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI 4239bool 4240operator< (const _CharT* __lhs, 4241 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4242{ 4243 return __rhs.compare(__lhs) > 0; 4244} 4245 4246// operator> 4247 4248template<class _CharT, class _Traits, class _Allocator> 4249inline _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI 4250bool 4251operator> (const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4252 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4253{ 4254 return __rhs < __lhs; 4255} 4256 4257template<class _CharT, class _Traits, class _Allocator> 4258inline _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI 4259bool 4260operator> (const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4261 const _CharT* __rhs) _NOEXCEPT 4262{ 4263 return __rhs < __lhs; 4264} 4265 4266template<class _CharT, class _Traits, class _Allocator> 4267inline _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI 4268bool 4269operator> (const _CharT* __lhs, 4270 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4271{ 4272 return __rhs < __lhs; 4273} 4274 4275// operator<= 4276 4277template<class _CharT, class _Traits, class _Allocator> 4278inline _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI 4279bool 4280operator<=(const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4281 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4282{ 4283 return !(__rhs < __lhs); 4284} 4285 4286template<class _CharT, class _Traits, class _Allocator> 4287inline _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI 4288bool 4289operator<=(const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4290 const _CharT* __rhs) _NOEXCEPT 4291{ 4292 return !(__rhs < __lhs); 4293} 4294 4295template<class _CharT, class _Traits, class _Allocator> 4296inline _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI 4297bool 4298operator<=(const _CharT* __lhs, 4299 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4300{ 4301 return !(__rhs < __lhs); 4302} 4303 4304// operator>= 4305 4306template<class _CharT, class _Traits, class _Allocator> 4307inline _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI 4308bool 4309operator>=(const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4310 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4311{ 4312 return !(__lhs < __rhs); 4313} 4314 4315template<class _CharT, class _Traits, class _Allocator> 4316inline _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI 4317bool 4318operator>=(const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4319 const _CharT* __rhs) _NOEXCEPT 4320{ 4321 return !(__lhs < __rhs); 4322} 4323 4324template<class _CharT, class _Traits, class _Allocator> 4325inline _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI 4326bool 4327operator>=(const _CharT* __lhs, 4328 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4329{ 4330 return !(__lhs < __rhs); 4331} 4332 4333// operator + 4334 4335template<class _CharT, class _Traits, class _Allocator> 4336_LIBCPP_CONSTEXPR_AFTER_CXX17 4337basic_string<_CharT, _Traits, _Allocator> 4338operator+(const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4339 const basic_string<_CharT, _Traits, _Allocator>& __rhs) 4340{ 4341 using _String = basic_string<_CharT, _Traits, _Allocator>; 4342 auto __lhs_sz = __lhs.size(); 4343 auto __rhs_sz = __rhs.size(); 4344 _String __r(__uninitialized_size_tag(), 4345 __lhs_sz + __rhs_sz, 4346 _String::__alloc_traits::select_on_container_copy_construction(__lhs.get_allocator())); 4347 auto __ptr = std::__to_address(__r.__get_pointer()); 4348 _Traits::copy(__ptr, __lhs.data(), __lhs_sz); 4349 _Traits::copy(__ptr + __lhs_sz, __rhs.data(), __rhs_sz); 4350 _Traits::assign(__ptr + __lhs_sz + __rhs_sz, 1, _CharT()); 4351 return __r; 4352} 4353 4354template<class _CharT, class _Traits, class _Allocator> 4355_LIBCPP_CONSTEXPR_AFTER_CXX17 4356basic_string<_CharT, _Traits, _Allocator> 4357operator+(const _CharT* __lhs , const basic_string<_CharT,_Traits,_Allocator>& __rhs) 4358{ 4359 using _String = basic_string<_CharT, _Traits, _Allocator>; 4360 auto __lhs_sz = _Traits::length(__lhs); 4361 auto __rhs_sz = __rhs.size(); 4362 _String __r(__uninitialized_size_tag(), 4363 __lhs_sz + __rhs_sz, 4364 _String::__alloc_traits::select_on_container_copy_construction(__rhs.get_allocator())); 4365 auto __ptr = std::__to_address(__r.__get_pointer()); 4366 _Traits::copy(__ptr, __lhs, __lhs_sz); 4367 _Traits::copy(__ptr + __lhs_sz, __rhs.data(), __rhs_sz); 4368 _Traits::assign(__ptr + __lhs_sz + __rhs_sz, 1, _CharT()); 4369 return __r; 4370} 4371 4372template<class _CharT, class _Traits, class _Allocator> 4373_LIBCPP_CONSTEXPR_AFTER_CXX17 4374basic_string<_CharT, _Traits, _Allocator> 4375operator+(_CharT __lhs, const basic_string<_CharT,_Traits,_Allocator>& __rhs) 4376{ 4377 using _String = basic_string<_CharT, _Traits, _Allocator>; 4378 typename _String::size_type __rhs_sz = __rhs.size(); 4379 _String __r(__uninitialized_size_tag(), 4380 __rhs_sz + 1, 4381 _String::__alloc_traits::select_on_container_copy_construction(__rhs.get_allocator())); 4382 auto __ptr = std::__to_address(__r.__get_pointer()); 4383 _Traits::assign(__ptr, 1, __lhs); 4384 _Traits::copy(__ptr + 1, __rhs.data(), __rhs_sz); 4385 _Traits::assign(__ptr + 1 + __rhs_sz, 1, _CharT()); 4386 return __r; 4387} 4388 4389template<class _CharT, class _Traits, class _Allocator> 4390inline _LIBCPP_CONSTEXPR_AFTER_CXX17 4391basic_string<_CharT, _Traits, _Allocator> 4392operator+(const basic_string<_CharT, _Traits, _Allocator>& __lhs, const _CharT* __rhs) 4393{ 4394 using _String = basic_string<_CharT, _Traits, _Allocator>; 4395 typename _String::size_type __lhs_sz = __lhs.size(); 4396 typename _String::size_type __rhs_sz = _Traits::length(__rhs); 4397 _String __r(__uninitialized_size_tag(), 4398 __lhs_sz + __rhs_sz, 4399 _String::__alloc_traits::select_on_container_copy_construction(__lhs.get_allocator())); 4400 auto __ptr = std::__to_address(__r.__get_pointer()); 4401 _Traits::copy(__ptr, __lhs.data(), __lhs_sz); 4402 _Traits::copy(__ptr + __lhs_sz, __rhs, __rhs_sz); 4403 _Traits::assign(__ptr + __lhs_sz + __rhs_sz, 1, _CharT()); 4404 return __r; 4405} 4406 4407template<class _CharT, class _Traits, class _Allocator> 4408_LIBCPP_CONSTEXPR_AFTER_CXX17 4409basic_string<_CharT, _Traits, _Allocator> 4410operator+(const basic_string<_CharT, _Traits, _Allocator>& __lhs, _CharT __rhs) 4411{ 4412 using _String = basic_string<_CharT, _Traits, _Allocator>; 4413 typename _String::size_type __lhs_sz = __lhs.size(); 4414 _String __r(__uninitialized_size_tag(), 4415 __lhs_sz + 1, 4416 _String::__alloc_traits::select_on_container_copy_construction(__lhs.get_allocator())); 4417 auto __ptr = std::__to_address(__r.__get_pointer()); 4418 _Traits::copy(__ptr, __lhs.data(), __lhs_sz); 4419 _Traits::assign(__ptr + __lhs_sz, 1, __rhs); 4420 _Traits::assign(__ptr + 1 + __lhs_sz, 1, _CharT()); 4421 return __r; 4422} 4423 4424#ifndef _LIBCPP_CXX03_LANG 4425 4426template<class _CharT, class _Traits, class _Allocator> 4427inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 4428basic_string<_CharT, _Traits, _Allocator> 4429operator+(basic_string<_CharT, _Traits, _Allocator>&& __lhs, const basic_string<_CharT, _Traits, _Allocator>& __rhs) 4430{ 4431 return std::move(__lhs.append(__rhs)); 4432} 4433 4434template<class _CharT, class _Traits, class _Allocator> 4435inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 4436basic_string<_CharT, _Traits, _Allocator> 4437operator+(const basic_string<_CharT, _Traits, _Allocator>& __lhs, basic_string<_CharT, _Traits, _Allocator>&& __rhs) 4438{ 4439 return std::move(__rhs.insert(0, __lhs)); 4440} 4441 4442template<class _CharT, class _Traits, class _Allocator> 4443inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 4444basic_string<_CharT, _Traits, _Allocator> 4445operator+(basic_string<_CharT, _Traits, _Allocator>&& __lhs, basic_string<_CharT, _Traits, _Allocator>&& __rhs) 4446{ 4447 return std::move(__lhs.append(__rhs)); 4448} 4449 4450template<class _CharT, class _Traits, class _Allocator> 4451inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 4452basic_string<_CharT, _Traits, _Allocator> 4453operator+(const _CharT* __lhs , basic_string<_CharT,_Traits,_Allocator>&& __rhs) 4454{ 4455 return std::move(__rhs.insert(0, __lhs)); 4456} 4457 4458template<class _CharT, class _Traits, class _Allocator> 4459inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 4460basic_string<_CharT, _Traits, _Allocator> 4461operator+(_CharT __lhs, basic_string<_CharT,_Traits,_Allocator>&& __rhs) 4462{ 4463 __rhs.insert(__rhs.begin(), __lhs); 4464 return std::move(__rhs); 4465} 4466 4467template<class _CharT, class _Traits, class _Allocator> 4468inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 4469basic_string<_CharT, _Traits, _Allocator> 4470operator+(basic_string<_CharT, _Traits, _Allocator>&& __lhs, const _CharT* __rhs) 4471{ 4472 return std::move(__lhs.append(__rhs)); 4473} 4474 4475template<class _CharT, class _Traits, class _Allocator> 4476inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 4477basic_string<_CharT, _Traits, _Allocator> 4478operator+(basic_string<_CharT, _Traits, _Allocator>&& __lhs, _CharT __rhs) 4479{ 4480 __lhs.push_back(__rhs); 4481 return std::move(__lhs); 4482} 4483 4484#endif // _LIBCPP_CXX03_LANG 4485 4486// swap 4487 4488template<class _CharT, class _Traits, class _Allocator> 4489inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 4490void 4491swap(basic_string<_CharT, _Traits, _Allocator>& __lhs, 4492 basic_string<_CharT, _Traits, _Allocator>& __rhs) 4493 _NOEXCEPT_(_NOEXCEPT_(__lhs.swap(__rhs))) 4494{ 4495 __lhs.swap(__rhs); 4496} 4497 4498_LIBCPP_FUNC_VIS int stoi (const string& __str, size_t* __idx = nullptr, int __base = 10); 4499_LIBCPP_FUNC_VIS long stol (const string& __str, size_t* __idx = nullptr, int __base = 10); 4500_LIBCPP_FUNC_VIS unsigned long stoul (const string& __str, size_t* __idx = nullptr, int __base = 10); 4501_LIBCPP_FUNC_VIS long long stoll (const string& __str, size_t* __idx = nullptr, int __base = 10); 4502_LIBCPP_FUNC_VIS unsigned long long stoull(const string& __str, size_t* __idx = nullptr, int __base = 10); 4503 4504_LIBCPP_FUNC_VIS float stof (const string& __str, size_t* __idx = nullptr); 4505_LIBCPP_FUNC_VIS double stod (const string& __str, size_t* __idx = nullptr); 4506_LIBCPP_FUNC_VIS long double stold(const string& __str, size_t* __idx = nullptr); 4507 4508_LIBCPP_FUNC_VIS string to_string(int __val); 4509_LIBCPP_FUNC_VIS string to_string(unsigned __val); 4510_LIBCPP_FUNC_VIS string to_string(long __val); 4511_LIBCPP_FUNC_VIS string to_string(unsigned long __val); 4512_LIBCPP_FUNC_VIS string to_string(long long __val); 4513_LIBCPP_FUNC_VIS string to_string(unsigned long long __val); 4514_LIBCPP_FUNC_VIS string to_string(float __val); 4515_LIBCPP_FUNC_VIS string to_string(double __val); 4516_LIBCPP_FUNC_VIS string to_string(long double __val); 4517 4518#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 4519_LIBCPP_FUNC_VIS int stoi (const wstring& __str, size_t* __idx = nullptr, int __base = 10); 4520_LIBCPP_FUNC_VIS long stol (const wstring& __str, size_t* __idx = nullptr, int __base = 10); 4521_LIBCPP_FUNC_VIS unsigned long stoul (const wstring& __str, size_t* __idx = nullptr, int __base = 10); 4522_LIBCPP_FUNC_VIS long long stoll (const wstring& __str, size_t* __idx = nullptr, int __base = 10); 4523_LIBCPP_FUNC_VIS unsigned long long stoull(const wstring& __str, size_t* __idx = nullptr, int __base = 10); 4524 4525_LIBCPP_FUNC_VIS float stof (const wstring& __str, size_t* __idx = nullptr); 4526_LIBCPP_FUNC_VIS double stod (const wstring& __str, size_t* __idx = nullptr); 4527_LIBCPP_FUNC_VIS long double stold(const wstring& __str, size_t* __idx = nullptr); 4528 4529_LIBCPP_FUNC_VIS wstring to_wstring(int __val); 4530_LIBCPP_FUNC_VIS wstring to_wstring(unsigned __val); 4531_LIBCPP_FUNC_VIS wstring to_wstring(long __val); 4532_LIBCPP_FUNC_VIS wstring to_wstring(unsigned long __val); 4533_LIBCPP_FUNC_VIS wstring to_wstring(long long __val); 4534_LIBCPP_FUNC_VIS wstring to_wstring(unsigned long long __val); 4535_LIBCPP_FUNC_VIS wstring to_wstring(float __val); 4536_LIBCPP_FUNC_VIS wstring to_wstring(double __val); 4537_LIBCPP_FUNC_VIS wstring to_wstring(long double __val); 4538#endif // _LIBCPP_HAS_NO_WIDE_CHARACTERS 4539 4540template<class _CharT, class _Traits, class _Allocator> 4541_LIBCPP_TEMPLATE_DATA_VIS 4542const typename basic_string<_CharT, _Traits, _Allocator>::size_type 4543 basic_string<_CharT, _Traits, _Allocator>::npos; 4544 4545template <class _CharT, class _Allocator> 4546struct _LIBCPP_TEMPLATE_VIS 4547 hash<basic_string<_CharT, char_traits<_CharT>, _Allocator> > 4548 : public unary_function< 4549 basic_string<_CharT, char_traits<_CharT>, _Allocator>, size_t> 4550{ 4551 size_t 4552 operator()(const basic_string<_CharT, char_traits<_CharT>, _Allocator>& __val) const _NOEXCEPT 4553 { return __do_string_hash(__val.data(), __val.data() + __val.size()); } 4554}; 4555 4556 4557template<class _CharT, class _Traits, class _Allocator> 4558basic_ostream<_CharT, _Traits>& 4559operator<<(basic_ostream<_CharT, _Traits>& __os, 4560 const basic_string<_CharT, _Traits, _Allocator>& __str); 4561 4562template<class _CharT, class _Traits, class _Allocator> 4563basic_istream<_CharT, _Traits>& 4564operator>>(basic_istream<_CharT, _Traits>& __is, 4565 basic_string<_CharT, _Traits, _Allocator>& __str); 4566 4567template<class _CharT, class _Traits, class _Allocator> 4568basic_istream<_CharT, _Traits>& 4569getline(basic_istream<_CharT, _Traits>& __is, 4570 basic_string<_CharT, _Traits, _Allocator>& __str, _CharT __dlm); 4571 4572template<class _CharT, class _Traits, class _Allocator> 4573inline _LIBCPP_HIDE_FROM_ABI 4574basic_istream<_CharT, _Traits>& 4575getline(basic_istream<_CharT, _Traits>& __is, 4576 basic_string<_CharT, _Traits, _Allocator>& __str); 4577 4578template<class _CharT, class _Traits, class _Allocator> 4579inline _LIBCPP_HIDE_FROM_ABI 4580basic_istream<_CharT, _Traits>& 4581getline(basic_istream<_CharT, _Traits>&& __is, 4582 basic_string<_CharT, _Traits, _Allocator>& __str, _CharT __dlm); 4583 4584template<class _CharT, class _Traits, class _Allocator> 4585inline _LIBCPP_HIDE_FROM_ABI 4586basic_istream<_CharT, _Traits>& 4587getline(basic_istream<_CharT, _Traits>&& __is, 4588 basic_string<_CharT, _Traits, _Allocator>& __str); 4589 4590#if _LIBCPP_STD_VER > 17 4591template <class _CharT, class _Traits, class _Allocator, class _Up> 4592inline _LIBCPP_HIDE_FROM_ABI 4593 typename basic_string<_CharT, _Traits, _Allocator>::size_type 4594 erase(basic_string<_CharT, _Traits, _Allocator>& __str, const _Up& __v) { 4595 auto __old_size = __str.size(); 4596 __str.erase(std::remove(__str.begin(), __str.end(), __v), __str.end()); 4597 return __old_size - __str.size(); 4598} 4599 4600template <class _CharT, class _Traits, class _Allocator, class _Predicate> 4601inline _LIBCPP_HIDE_FROM_ABI 4602 typename basic_string<_CharT, _Traits, _Allocator>::size_type 4603 erase_if(basic_string<_CharT, _Traits, _Allocator>& __str, 4604 _Predicate __pred) { 4605 auto __old_size = __str.size(); 4606 __str.erase(std::remove_if(__str.begin(), __str.end(), __pred), 4607 __str.end()); 4608 return __old_size - __str.size(); 4609} 4610#endif 4611 4612#if _LIBCPP_DEBUG_LEVEL == 2 4613 4614template<class _CharT, class _Traits, class _Allocator> 4615bool 4616basic_string<_CharT, _Traits, _Allocator>::__dereferenceable(const const_iterator* __i) const 4617{ 4618 return data() <= std::__to_address(__i->base()) && 4619 std::__to_address(__i->base()) < data() + size(); 4620} 4621 4622template<class _CharT, class _Traits, class _Allocator> 4623bool 4624basic_string<_CharT, _Traits, _Allocator>::__decrementable(const const_iterator* __i) const 4625{ 4626 return data() < std::__to_address(__i->base()) && 4627 std::__to_address(__i->base()) <= data() + size(); 4628} 4629 4630template<class _CharT, class _Traits, class _Allocator> 4631bool 4632basic_string<_CharT, _Traits, _Allocator>::__addable(const const_iterator* __i, ptrdiff_t __n) const 4633{ 4634 const value_type* __p = std::__to_address(__i->base()) + __n; 4635 return data() <= __p && __p <= data() + size(); 4636} 4637 4638template<class _CharT, class _Traits, class _Allocator> 4639bool 4640basic_string<_CharT, _Traits, _Allocator>::__subscriptable(const const_iterator* __i, ptrdiff_t __n) const 4641{ 4642 const value_type* __p = std::__to_address(__i->base()) + __n; 4643 return data() <= __p && __p < data() + size(); 4644} 4645 4646#endif // _LIBCPP_DEBUG_LEVEL == 2 4647 4648#if _LIBCPP_STD_VER > 11 4649// Literal suffixes for basic_string [basic.string.literals] 4650inline namespace literals 4651{ 4652 inline namespace string_literals 4653 { 4654 inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 4655 basic_string<char> operator "" s( const char *__str, size_t __len ) 4656 { 4657 return basic_string<char> (__str, __len); 4658 } 4659 4660#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 4661 inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 4662 basic_string<wchar_t> operator "" s( const wchar_t *__str, size_t __len ) 4663 { 4664 return basic_string<wchar_t> (__str, __len); 4665 } 4666#endif 4667 4668#ifndef _LIBCPP_HAS_NO_CHAR8_T 4669 inline _LIBCPP_HIDE_FROM_ABI constexpr 4670 basic_string<char8_t> operator "" s(const char8_t *__str, size_t __len) _NOEXCEPT 4671 { 4672 return basic_string<char8_t> (__str, __len); 4673 } 4674#endif 4675 4676 inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 4677 basic_string<char16_t> operator "" s( const char16_t *__str, size_t __len ) 4678 { 4679 return basic_string<char16_t> (__str, __len); 4680 } 4681 4682 inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 4683 basic_string<char32_t> operator "" s( const char32_t *__str, size_t __len ) 4684 { 4685 return basic_string<char32_t> (__str, __len); 4686 } 4687 } // namespace string_literals 4688} // namespace literals 4689 4690#if _LIBCPP_STD_VER > 17 4691template <> 4692inline constexpr bool __format::__enable_insertable<std::basic_string<char>> = true; 4693#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 4694template <> 4695inline constexpr bool __format::__enable_insertable<std::basic_string<wchar_t>> = true; 4696#endif 4697#endif 4698 4699#endif 4700 4701_LIBCPP_END_NAMESPACE_STD 4702 4703_LIBCPP_POP_MACROS 4704 4705#endif // _LIBCPP_STRING 4706