1// -*- C++ -*- 2//===--------------------------- string -----------------------------------===// 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); 99 explicit basic_string(const allocator_type& a); 100 basic_string(const basic_string& str); 101 basic_string(basic_string&& str) 102 noexcept(is_nothrow_move_constructible<allocator_type>::value); 103 basic_string(const basic_string& str, size_type pos, 104 const allocator_type& a = allocator_type()); 105 basic_string(const basic_string& str, size_type pos, size_type n, 106 const Allocator& a = Allocator()); 107 template<class T> 108 basic_string(const T& t, size_type pos, size_type n, const Allocator& a = Allocator()); // C++17 109 template <class T> 110 explicit basic_string(const T& t, const Allocator& a = Allocator()); // C++17 111 basic_string(const value_type* s, const allocator_type& a = allocator_type()); 112 basic_string(const value_type* s, size_type n, const allocator_type& a = allocator_type()); 113 basic_string(nullptr_t) = delete; // C++2b 114 basic_string(size_type n, value_type c, const allocator_type& a = allocator_type()); 115 template<class InputIterator> 116 basic_string(InputIterator begin, InputIterator end, 117 const allocator_type& a = allocator_type()); 118 basic_string(initializer_list<value_type>, const Allocator& = Allocator()); 119 basic_string(const basic_string&, const Allocator&); 120 basic_string(basic_string&&, const Allocator&); 121 122 ~basic_string(); 123 124 operator basic_string_view<charT, traits>() const noexcept; 125 126 basic_string& operator=(const basic_string& str); 127 template <class T> 128 basic_string& operator=(const T& t); // C++17 129 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++17 133 basic_string& operator=(const value_type* s); 134 basic_string& operator=(nullptr_t) = delete; // C++2b 135 basic_string& operator=(value_type c); 136 basic_string& operator=(initializer_list<value_type>); 137 138 iterator begin() noexcept; 139 const_iterator begin() const noexcept; 140 iterator end() noexcept; 141 const_iterator end() const noexcept; 142 143 reverse_iterator rbegin() noexcept; 144 const_reverse_iterator rbegin() const noexcept; 145 reverse_iterator rend() noexcept; 146 const_reverse_iterator rend() const noexcept; 147 148 const_iterator cbegin() const noexcept; 149 const_iterator cend() const noexcept; 150 const_reverse_iterator crbegin() const noexcept; 151 const_reverse_iterator crend() const noexcept; 152 153 size_type size() const noexcept; 154 size_type length() const noexcept; 155 size_type max_size() const noexcept; 156 size_type capacity() const noexcept; 157 158 void resize(size_type n, value_type c); 159 void resize(size_type n); 160 161 void reserve(size_type res_arg); 162 void reserve(); // deprecated in C++20 163 void shrink_to_fit(); 164 void clear() noexcept; 165 bool empty() const noexcept; 166 167 const_reference operator[](size_type pos) const; 168 reference operator[](size_type pos); 169 170 const_reference at(size_type n) const; 171 reference at(size_type n); 172 173 basic_string& operator+=(const basic_string& str); 174 template <class T> 175 basic_string& operator+=(const T& t); // C++17 176 basic_string& operator+=(const value_type* s); 177 basic_string& operator+=(value_type c); 178 basic_string& operator+=(initializer_list<value_type>); 179 180 basic_string& append(const basic_string& str); 181 template <class T> 182 basic_string& append(const T& t); // C++17 183 basic_string& append(const basic_string& str, size_type pos, size_type n=npos); //C++14 184 template <class T> 185 basic_string& append(const T& t, size_type pos, size_type n=npos); // C++17 186 basic_string& append(const value_type* s, size_type n); 187 basic_string& append(const value_type* s); 188 basic_string& append(size_type n, value_type c); 189 template<class InputIterator> 190 basic_string& append(InputIterator first, InputIterator last); 191 basic_string& append(initializer_list<value_type>); 192 193 void push_back(value_type c); 194 void pop_back(); 195 reference front(); 196 const_reference front() const; 197 reference back(); 198 const_reference back() const; 199 200 basic_string& assign(const basic_string& str); 201 template <class T> 202 basic_string& assign(const T& t); // C++17 203 basic_string& assign(basic_string&& str); 204 basic_string& assign(const basic_string& str, size_type pos, size_type n=npos); // C++14 205 template <class T> 206 basic_string& assign(const T& t, size_type pos, size_type n=npos); // C++17 207 basic_string& assign(const value_type* s, size_type n); 208 basic_string& assign(const value_type* s); 209 basic_string& assign(size_type n, value_type c); 210 template<class InputIterator> 211 basic_string& assign(InputIterator first, InputIterator last); 212 basic_string& assign(initializer_list<value_type>); 213 214 basic_string& insert(size_type pos1, const basic_string& str); 215 template <class T> 216 basic_string& insert(size_type pos1, const T& t); 217 basic_string& insert(size_type pos1, const basic_string& str, 218 size_type pos2, size_type n); 219 template <class T> 220 basic_string& insert(size_type pos1, const T& t, size_type pos2, size_type n); // C++17 221 basic_string& insert(size_type pos, const value_type* s, size_type n=npos); //C++14 222 basic_string& insert(size_type pos, const value_type* s); 223 basic_string& insert(size_type pos, size_type n, value_type c); 224 iterator insert(const_iterator p, value_type c); 225 iterator insert(const_iterator p, size_type n, value_type c); 226 template<class InputIterator> 227 iterator insert(const_iterator p, InputIterator first, InputIterator last); 228 iterator insert(const_iterator p, initializer_list<value_type>); 229 230 basic_string& erase(size_type pos = 0, size_type n = npos); 231 iterator erase(const_iterator position); 232 iterator erase(const_iterator first, const_iterator last); 233 234 basic_string& replace(size_type pos1, size_type n1, const basic_string& str); 235 template <class T> 236 basic_string& replace(size_type pos1, size_type n1, const T& t); // C++17 237 basic_string& replace(size_type pos1, size_type n1, const basic_string& str, 238 size_type pos2, size_type n2=npos); // C++14 239 template <class T> 240 basic_string& replace(size_type pos1, size_type n1, const T& t, 241 size_type pos2, size_type n); // C++17 242 basic_string& replace(size_type pos, size_type n1, const value_type* s, size_type n2); 243 basic_string& replace(size_type pos, size_type n1, const value_type* s); 244 basic_string& replace(size_type pos, size_type n1, size_type n2, value_type c); 245 basic_string& replace(const_iterator i1, const_iterator i2, const basic_string& str); 246 template <class T> 247 basic_string& replace(const_iterator i1, const_iterator i2, const T& t); // C++17 248 basic_string& replace(const_iterator i1, const_iterator i2, const value_type* s, size_type n); 249 basic_string& replace(const_iterator i1, const_iterator i2, const value_type* s); 250 basic_string& replace(const_iterator i1, const_iterator i2, size_type n, value_type c); 251 template<class InputIterator> 252 basic_string& replace(const_iterator i1, const_iterator i2, InputIterator j1, InputIterator j2); 253 basic_string& replace(const_iterator i1, const_iterator i2, initializer_list<value_type>); 254 255 size_type copy(value_type* s, size_type n, size_type pos = 0) const; 256 basic_string substr(size_type pos = 0, size_type n = npos) const; 257 258 void swap(basic_string& str) 259 noexcept(allocator_traits<allocator_type>::propagate_on_container_swap::value || 260 allocator_traits<allocator_type>::is_always_equal::value); // C++17 261 262 const value_type* c_str() const noexcept; 263 const value_type* data() const noexcept; 264 value_type* data() noexcept; // C++17 265 266 allocator_type get_allocator() const noexcept; 267 268 size_type find(const basic_string& str, size_type pos = 0) const noexcept; 269 template <class T> 270 size_type find(const T& t, size_type pos = 0) const noexcept; // C++17, noexcept as an extension 271 size_type find(const value_type* s, size_type pos, size_type n) const noexcept; 272 size_type find(const value_type* s, size_type pos = 0) const noexcept; 273 size_type find(value_type c, size_type pos = 0) const noexcept; 274 275 size_type rfind(const basic_string& str, size_type pos = npos) const noexcept; 276 template <class T> 277 size_type rfind(const T& t, size_type pos = npos) const noexcept; // C++17, noexcept as an extension 278 size_type rfind(const value_type* s, size_type pos, size_type n) const noexcept; 279 size_type rfind(const value_type* s, size_type pos = npos) const noexcept; 280 size_type rfind(value_type c, size_type pos = npos) const noexcept; 281 282 size_type find_first_of(const basic_string& str, size_type pos = 0) const noexcept; 283 template <class T> 284 size_type find_first_of(const T& t, size_type pos = 0) const noexcept; // C++17, noexcept as an extension 285 size_type find_first_of(const value_type* s, size_type pos, size_type n) const noexcept; 286 size_type find_first_of(const value_type* s, size_type pos = 0) const noexcept; 287 size_type find_first_of(value_type c, size_type pos = 0) const noexcept; 288 289 size_type find_last_of(const basic_string& str, size_type pos = npos) const noexcept; 290 template <class T> 291 size_type find_last_of(const T& t, size_type pos = npos) const noexcept noexcept; // C++17, noexcept as an extension 292 size_type find_last_of(const value_type* s, size_type pos, size_type n) const noexcept; 293 size_type find_last_of(const value_type* s, size_type pos = npos) const noexcept; 294 size_type find_last_of(value_type c, size_type pos = npos) const noexcept; 295 296 size_type find_first_not_of(const basic_string& str, size_type pos = 0) const noexcept; 297 template <class T> 298 size_type find_first_not_of(const T& t, size_type pos = 0) const noexcept; // C++17, noexcept as an extension 299 size_type find_first_not_of(const value_type* s, size_type pos, size_type n) const noexcept; 300 size_type find_first_not_of(const value_type* s, size_type pos = 0) const noexcept; 301 size_type find_first_not_of(value_type c, size_type pos = 0) const noexcept; 302 303 size_type find_last_not_of(const basic_string& str, size_type pos = npos) const noexcept; 304 template <class T> 305 size_type find_last_not_of(const T& t, size_type pos = npos) const noexcept; // C++17, noexcept as an extension 306 size_type find_last_not_of(const value_type* s, size_type pos, size_type n) const noexcept; 307 size_type find_last_not_of(const value_type* s, size_type pos = npos) const noexcept; 308 size_type find_last_not_of(value_type c, size_type pos = npos) const noexcept; 309 310 int compare(const basic_string& str) const noexcept; 311 template <class T> 312 int compare(const T& t) const noexcept; // C++17, noexcept as an extension 313 int compare(size_type pos1, size_type n1, const basic_string& str) const; 314 template <class T> 315 int compare(size_type pos1, size_type n1, const T& t) const; // C++17 316 int compare(size_type pos1, size_type n1, const basic_string& str, 317 size_type pos2, size_type n2=npos) const; // C++14 318 template <class T> 319 int compare(size_type pos1, size_type n1, const T& t, 320 size_type pos2, size_type n2=npos) const; // C++17 321 int compare(const value_type* s) const noexcept; 322 int compare(size_type pos1, size_type n1, const value_type* s) const; 323 int compare(size_type pos1, size_type n1, const value_type* s, size_type n2) const; 324 325 bool starts_with(basic_string_view<charT, traits> sv) const noexcept; // C++20 326 bool starts_with(charT c) const noexcept; // C++20 327 bool starts_with(const charT* s) const; // C++20 328 bool ends_with(basic_string_view<charT, traits> sv) const noexcept; // C++20 329 bool ends_with(charT c) const noexcept; // C++20 330 bool ends_with(const charT* s) const; // C++20 331 332 constexpr bool contains(basic_string_view<charT, traits> sv) const noexcept; // C++2b 333 constexpr bool contains(charT c) const noexcept; // C++2b 334 constexpr bool contains(const charT* s) const; // C++2b 335 336 bool __invariants() const; 337}; 338 339template<class InputIterator, 340 class Allocator = allocator<typename iterator_traits<InputIterator>::value_type>> 341basic_string(InputIterator, InputIterator, Allocator = Allocator()) 342 -> basic_string<typename iterator_traits<InputIterator>::value_type, 343 char_traits<typename iterator_traits<InputIterator>::value_type>, 344 Allocator>; // C++17 345 346template<class charT, class traits, class Allocator> 347basic_string<charT, traits, Allocator> 348operator+(const basic_string<charT, traits, Allocator>& lhs, 349 const basic_string<charT, traits, Allocator>& rhs); 350 351template<class charT, class traits, class Allocator> 352basic_string<charT, traits, Allocator> 353operator+(const charT* lhs , const basic_string<charT,traits,Allocator>&rhs); 354 355template<class charT, class traits, class Allocator> 356basic_string<charT, traits, Allocator> 357operator+(charT lhs, const basic_string<charT,traits,Allocator>& rhs); 358 359template<class charT, class traits, class Allocator> 360basic_string<charT, traits, Allocator> 361operator+(const basic_string<charT, traits, Allocator>& lhs, const charT* rhs); 362 363template<class charT, class traits, class Allocator> 364basic_string<charT, traits, Allocator> 365operator+(const basic_string<charT, traits, Allocator>& lhs, charT rhs); 366 367template<class charT, class traits, class Allocator> 368bool operator==(const basic_string<charT, traits, Allocator>& lhs, 369 const basic_string<charT, traits, Allocator>& rhs) noexcept; 370 371template<class charT, class traits, class Allocator> 372bool operator==(const charT* lhs, const basic_string<charT, traits, Allocator>& rhs) noexcept; 373 374template<class charT, class traits, class Allocator> 375bool operator==(const basic_string<charT,traits,Allocator>& lhs, const charT* rhs) noexcept; 376 377template<class charT, class traits, class Allocator> 378bool operator!=(const basic_string<charT,traits,Allocator>& lhs, 379 const basic_string<charT, traits, Allocator>& rhs) noexcept; 380 381template<class charT, class traits, class Allocator> 382bool operator!=(const charT* lhs, const basic_string<charT, traits, Allocator>& rhs) noexcept; 383 384template<class charT, class traits, class Allocator> 385bool operator!=(const basic_string<charT, traits, Allocator>& lhs, const charT* rhs) noexcept; 386 387template<class charT, class traits, class Allocator> 388bool operator< (const basic_string<charT, traits, Allocator>& lhs, 389 const basic_string<charT, traits, Allocator>& rhs) noexcept; 390 391template<class charT, class traits, class Allocator> 392bool operator< (const basic_string<charT, traits, Allocator>& lhs, const charT* rhs) noexcept; 393 394template<class charT, class traits, class Allocator> 395bool operator< (const charT* lhs, const basic_string<charT, traits, Allocator>& rhs) noexcept; 396 397template<class charT, class traits, class Allocator> 398bool operator> (const basic_string<charT, traits, Allocator>& lhs, 399 const basic_string<charT, traits, Allocator>& rhs) noexcept; 400 401template<class charT, class traits, class Allocator> 402bool operator> (const basic_string<charT, traits, Allocator>& lhs, const charT* rhs) noexcept; 403 404template<class charT, class traits, class Allocator> 405bool operator> (const charT* lhs, const basic_string<charT, traits, Allocator>& rhs) noexcept; 406 407template<class charT, class traits, class Allocator> 408bool operator<=(const basic_string<charT, traits, Allocator>& lhs, 409 const basic_string<charT, traits, Allocator>& rhs) noexcept; 410 411template<class charT, class traits, class Allocator> 412bool operator<=(const basic_string<charT, traits, Allocator>& lhs, const charT* rhs) noexcept; 413 414template<class charT, class traits, class Allocator> 415bool operator<=(const charT* lhs, const basic_string<charT, traits, Allocator>& rhs) noexcept; 416 417template<class charT, class traits, class Allocator> 418bool operator>=(const basic_string<charT, traits, Allocator>& lhs, 419 const basic_string<charT, traits, Allocator>& rhs) noexcept; 420 421template<class charT, class traits, class Allocator> 422bool operator>=(const basic_string<charT, traits, Allocator>& lhs, const charT* rhs) noexcept; 423 424template<class charT, class traits, class Allocator> 425bool operator>=(const charT* lhs, const basic_string<charT, traits, Allocator>& rhs) noexcept; 426 427template<class charT, class traits, class Allocator> 428void swap(basic_string<charT, traits, Allocator>& lhs, 429 basic_string<charT, traits, Allocator>& rhs) 430 noexcept(noexcept(lhs.swap(rhs))); 431 432template<class charT, class traits, class Allocator> 433basic_istream<charT, traits>& 434operator>>(basic_istream<charT, traits>& is, basic_string<charT, traits, Allocator>& str); 435 436template<class charT, class traits, class Allocator> 437basic_ostream<charT, traits>& 438operator<<(basic_ostream<charT, traits>& os, const basic_string<charT, traits, Allocator>& str); 439 440template<class charT, class traits, class Allocator> 441basic_istream<charT, traits>& 442getline(basic_istream<charT, traits>& is, basic_string<charT, traits, Allocator>& str, 443 charT delim); 444 445template<class charT, class traits, class Allocator> 446basic_istream<charT, traits>& 447getline(basic_istream<charT, traits>& is, basic_string<charT, traits, Allocator>& str); 448 449template<class charT, class traits, class Allocator, class U> 450typename basic_string<charT, traits, Allocator>::size_type 451erase(basic_string<charT, traits, Allocator>& c, const U& value); // C++20 452template<class charT, class traits, class Allocator, class Predicate> 453typename basic_string<charT, traits, Allocator>::size_type 454erase_if(basic_string<charT, traits, Allocator>& c, Predicate pred); // C++20 455 456typedef basic_string<char> string; 457typedef basic_string<wchar_t> wstring; 458typedef basic_string<char8_t> u8string; // C++20 459typedef basic_string<char16_t> u16string; 460typedef basic_string<char32_t> u32string; 461 462int stoi (const string& str, size_t* idx = nullptr, int base = 10); 463long stol (const string& str, size_t* idx = nullptr, int base = 10); 464unsigned long stoul (const string& str, size_t* idx = nullptr, int base = 10); 465long long stoll (const string& str, size_t* idx = nullptr, int base = 10); 466unsigned long long stoull(const string& str, size_t* idx = nullptr, int base = 10); 467 468float stof (const string& str, size_t* idx = nullptr); 469double stod (const string& str, size_t* idx = nullptr); 470long double stold(const string& str, size_t* idx = nullptr); 471 472string to_string(int val); 473string to_string(unsigned val); 474string to_string(long val); 475string to_string(unsigned long val); 476string to_string(long long val); 477string to_string(unsigned long long val); 478string to_string(float val); 479string to_string(double val); 480string to_string(long double val); 481 482int stoi (const wstring& str, size_t* idx = nullptr, int base = 10); 483long stol (const wstring& str, size_t* idx = nullptr, int base = 10); 484unsigned long stoul (const wstring& str, size_t* idx = nullptr, int base = 10); 485long long stoll (const wstring& str, size_t* idx = nullptr, int base = 10); 486unsigned long long stoull(const wstring& str, size_t* idx = nullptr, int base = 10); 487 488float stof (const wstring& str, size_t* idx = nullptr); 489double stod (const wstring& str, size_t* idx = nullptr); 490long double stold(const wstring& str, size_t* idx = nullptr); 491 492wstring to_wstring(int val); 493wstring to_wstring(unsigned val); 494wstring to_wstring(long val); 495wstring to_wstring(unsigned long val); 496wstring to_wstring(long long val); 497wstring to_wstring(unsigned long long val); 498wstring to_wstring(float val); 499wstring to_wstring(double val); 500wstring to_wstring(long double val); 501 502template <> struct hash<string>; 503template <> struct hash<u8string>; // C++20 504template <> struct hash<u16string>; 505template <> struct hash<u32string>; 506template <> struct hash<wstring>; 507 508basic_string<char> operator "" s( const char *str, size_t len ); // C++14 509basic_string<wchar_t> operator "" s( const wchar_t *str, size_t len ); // C++14 510basic_string<char8_t> operator "" s( const char8_t *str, size_t len ); // C++20 511basic_string<char16_t> operator "" s( const char16_t *str, size_t len ); // C++14 512basic_string<char32_t> operator "" s( const char32_t *str, size_t len ); // C++14 513 514} // std 515 516*/ 517 518#include <__config> 519#include <__debug> 520#include <__functional_base> 521#include <__iterator/wrap_iter.h> 522#include <algorithm> 523#include <compare> 524#include <cstdio> // EOF 525#include <cstring> 526#include <cwchar> 527#include <initializer_list> 528#include <iosfwd> 529#include <iterator> 530#include <memory> 531#include <stdexcept> 532#include <string_view> 533#include <type_traits> 534#include <utility> 535#include <version> 536 537#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS 538# include <cstdint> 539#endif 540 541#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 542#pragma GCC system_header 543#endif 544 545_LIBCPP_PUSH_MACROS 546#include <__undef_macros> 547 548 549_LIBCPP_BEGIN_NAMESPACE_STD 550 551// fpos 552 553template <class _StateT> 554class _LIBCPP_TEMPLATE_VIS fpos 555{ 556private: 557 _StateT __st_; 558 streamoff __off_; 559public: 560 _LIBCPP_INLINE_VISIBILITY fpos(streamoff __off = streamoff()) : __st_(), __off_(__off) {} 561 562 _LIBCPP_INLINE_VISIBILITY operator streamoff() const {return __off_;} 563 564 _LIBCPP_INLINE_VISIBILITY _StateT state() const {return __st_;} 565 _LIBCPP_INLINE_VISIBILITY void state(_StateT __st) {__st_ = __st;} 566 567 _LIBCPP_INLINE_VISIBILITY fpos& operator+=(streamoff __off) {__off_ += __off; return *this;} 568 _LIBCPP_INLINE_VISIBILITY fpos operator+ (streamoff __off) const {fpos __t(*this); __t += __off; return __t;} 569 _LIBCPP_INLINE_VISIBILITY fpos& operator-=(streamoff __off) {__off_ -= __off; return *this;} 570 _LIBCPP_INLINE_VISIBILITY fpos operator- (streamoff __off) const {fpos __t(*this); __t -= __off; return __t;} 571}; 572 573template <class _StateT> 574inline _LIBCPP_INLINE_VISIBILITY 575streamoff operator-(const fpos<_StateT>& __x, const fpos<_StateT>& __y) 576 {return streamoff(__x) - streamoff(__y);} 577 578template <class _StateT> 579inline _LIBCPP_INLINE_VISIBILITY 580bool operator==(const fpos<_StateT>& __x, const fpos<_StateT>& __y) 581 {return streamoff(__x) == streamoff(__y);} 582 583template <class _StateT> 584inline _LIBCPP_INLINE_VISIBILITY 585bool operator!=(const fpos<_StateT>& __x, const fpos<_StateT>& __y) 586 {return streamoff(__x) != streamoff(__y);} 587 588// basic_string 589 590template<class _CharT, class _Traits, class _Allocator> 591basic_string<_CharT, _Traits, _Allocator> 592operator+(const basic_string<_CharT, _Traits, _Allocator>& __x, 593 const basic_string<_CharT, _Traits, _Allocator>& __y); 594 595template<class _CharT, class _Traits, class _Allocator> 596basic_string<_CharT, _Traits, _Allocator> 597operator+(const _CharT* __x, const basic_string<_CharT,_Traits,_Allocator>& __y); 598 599template<class _CharT, class _Traits, class _Allocator> 600basic_string<_CharT, _Traits, _Allocator> 601operator+(_CharT __x, const basic_string<_CharT,_Traits,_Allocator>& __y); 602 603template<class _CharT, class _Traits, class _Allocator> 604inline _LIBCPP_INLINE_VISIBILITY 605basic_string<_CharT, _Traits, _Allocator> 606operator+(const basic_string<_CharT, _Traits, _Allocator>& __x, const _CharT* __y); 607 608template<class _CharT, class _Traits, class _Allocator> 609basic_string<_CharT, _Traits, _Allocator> 610operator+(const basic_string<_CharT, _Traits, _Allocator>& __x, _CharT __y); 611 612_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS string operator+<char, char_traits<char>, allocator<char> >(char const*, string const&)) 613 614template <bool> 615class _LIBCPP_TEMPLATE_VIS __basic_string_common 616{ 617protected: 618 _LIBCPP_NORETURN void __throw_length_error() const; 619 _LIBCPP_NORETURN void __throw_out_of_range() const; 620}; 621 622template <bool __b> 623void 624__basic_string_common<__b>::__throw_length_error() const 625{ 626 _VSTD::__throw_length_error("basic_string"); 627} 628 629template <bool __b> 630void 631__basic_string_common<__b>::__throw_out_of_range() const 632{ 633 _VSTD::__throw_out_of_range("basic_string"); 634} 635 636_LIBCPP_EXTERN_TEMPLATE(class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS __basic_string_common<true>) 637 638template <class _Iter> 639struct __string_is_trivial_iterator : public false_type {}; 640 641template <class _Tp> 642struct __string_is_trivial_iterator<_Tp*> 643 : public is_arithmetic<_Tp> {}; 644 645template <class _Iter> 646struct __string_is_trivial_iterator<__wrap_iter<_Iter> > 647 : public __string_is_trivial_iterator<_Iter> {}; 648 649template <class _CharT, class _Traits, class _Tp> 650struct __can_be_converted_to_string_view : public _BoolConstant< 651 is_convertible<const _Tp&, basic_string_view<_CharT, _Traits> >::value && 652 !is_convertible<const _Tp&, const _CharT*>::value 653 > {}; 654 655#ifdef _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT 656 657template <class _CharT, size_t = sizeof(_CharT)> 658struct __padding 659{ 660 unsigned char __xx[sizeof(_CharT)-1]; 661}; 662 663template <class _CharT> 664struct __padding<_CharT, 1> 665{ 666}; 667 668#endif // _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT 669 670#ifndef _LIBCPP_HAS_NO_CHAR8_T 671typedef basic_string<char8_t> u8string; 672#endif 673 674#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS 675typedef basic_string<char16_t> u16string; 676typedef basic_string<char32_t> u32string; 677#endif // _LIBCPP_HAS_NO_UNICODE_CHARS 678 679template<class _CharT, class _Traits, class _Allocator> 680class 681 _LIBCPP_TEMPLATE_VIS 682#ifndef _LIBCPP_HAS_NO_CHAR8_T 683 _LIBCPP_PREFERRED_NAME(u8string) 684#endif 685#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS 686 _LIBCPP_PREFERRED_NAME(u16string) 687 _LIBCPP_PREFERRED_NAME(u32string) 688#endif 689 basic_string 690 : private __basic_string_common<true> 691{ 692public: 693 typedef basic_string __self; 694 typedef basic_string_view<_CharT, _Traits> __self_view; 695 typedef _Traits traits_type; 696 typedef _CharT value_type; 697 typedef _Allocator allocator_type; 698 typedef allocator_traits<allocator_type> __alloc_traits; 699 typedef typename __alloc_traits::size_type size_type; 700 typedef typename __alloc_traits::difference_type difference_type; 701 typedef value_type& reference; 702 typedef const value_type& const_reference; 703 typedef typename __alloc_traits::pointer pointer; 704 typedef typename __alloc_traits::const_pointer const_pointer; 705 706 static_assert((!is_array<value_type>::value), "Character type of basic_string must not be an array"); 707 static_assert(( is_standard_layout<value_type>::value), "Character type of basic_string must be standard-layout"); 708 static_assert(( is_trivial<value_type>::value), "Character type of basic_string must be trivial"); 709 static_assert(( is_same<_CharT, typename traits_type::char_type>::value), 710 "traits_type::char_type must be the same type as CharT"); 711 static_assert(( is_same<typename allocator_type::value_type, value_type>::value), 712 "Allocator::value_type must be same type as value_type"); 713 714 typedef __wrap_iter<pointer> iterator; 715 typedef __wrap_iter<const_pointer> const_iterator; 716 typedef _VSTD::reverse_iterator<iterator> reverse_iterator; 717 typedef _VSTD::reverse_iterator<const_iterator> const_reverse_iterator; 718 719private: 720 721#ifdef _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT 722 723 struct __long 724 { 725 pointer __data_; 726 size_type __size_; 727 size_type __cap_; 728 }; 729 730#ifdef _LIBCPP_BIG_ENDIAN 731 static const size_type __short_mask = 0x01; 732 static const size_type __long_mask = 0x1ul; 733#else // _LIBCPP_BIG_ENDIAN 734 static const size_type __short_mask = 0x80; 735 static const size_type __long_mask = ~(size_type(~0) >> 1); 736#endif // _LIBCPP_BIG_ENDIAN 737 738 enum {__min_cap = (sizeof(__long) - 1)/sizeof(value_type) > 2 ? 739 (sizeof(__long) - 1)/sizeof(value_type) : 2}; 740 741 struct __short 742 { 743 value_type __data_[__min_cap]; 744 struct 745 : __padding<value_type> 746 { 747 unsigned char __size_; 748 }; 749 }; 750 751#else 752 753 struct __long 754 { 755 size_type __cap_; 756 size_type __size_; 757 pointer __data_; 758 }; 759 760#ifdef _LIBCPP_BIG_ENDIAN 761 static const size_type __short_mask = 0x80; 762 static const size_type __long_mask = ~(size_type(~0) >> 1); 763#else // _LIBCPP_BIG_ENDIAN 764 static const size_type __short_mask = 0x01; 765 static const size_type __long_mask = 0x1ul; 766#endif // _LIBCPP_BIG_ENDIAN 767 768 enum {__min_cap = (sizeof(__long) - 1)/sizeof(value_type) > 2 ? 769 (sizeof(__long) - 1)/sizeof(value_type) : 2}; 770 771 struct __short 772 { 773 union 774 { 775 unsigned char __size_; 776 value_type __lx; 777 }; 778 value_type __data_[__min_cap]; 779 }; 780 781#endif // _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT 782 783 union __ulx{__long __lx; __short __lxx;}; 784 785 enum {__n_words = sizeof(__ulx) / sizeof(size_type)}; 786 787 struct __raw 788 { 789 size_type __words[__n_words]; 790 }; 791 792 struct __rep 793 { 794 union 795 { 796 __long __l; 797 __short __s; 798 __raw __r; 799 }; 800 }; 801 802 __compressed_pair<__rep, allocator_type> __r_; 803 804public: 805 _LIBCPP_TEMPLATE_DATA_VIS 806 static const size_type npos = -1; 807 808 _LIBCPP_INLINE_VISIBILITY basic_string() 809 _NOEXCEPT_(is_nothrow_default_constructible<allocator_type>::value); 810 811 _LIBCPP_INLINE_VISIBILITY explicit basic_string(const allocator_type& __a) 812#if _LIBCPP_STD_VER <= 14 813 _NOEXCEPT_(is_nothrow_copy_constructible<allocator_type>::value); 814#else 815 _NOEXCEPT; 816#endif 817 818 basic_string(const basic_string& __str); 819 basic_string(const basic_string& __str, const allocator_type& __a); 820 821#ifndef _LIBCPP_CXX03_LANG 822 _LIBCPP_INLINE_VISIBILITY 823 basic_string(basic_string&& __str) 824#if _LIBCPP_STD_VER <= 14 825 _NOEXCEPT_(is_nothrow_move_constructible<allocator_type>::value); 826#else 827 _NOEXCEPT; 828#endif 829 830 _LIBCPP_INLINE_VISIBILITY 831 basic_string(basic_string&& __str, const allocator_type& __a); 832#endif // _LIBCPP_CXX03_LANG 833 834 template <class = _EnableIf<__is_allocator<_Allocator>::value, nullptr_t> > 835 _LIBCPP_INLINE_VISIBILITY 836 basic_string(const _CharT* __s) : __r_(__default_init_tag(), __default_init_tag()) { 837 _LIBCPP_ASSERT(__s != nullptr, "basic_string(const char*) detected nullptr"); 838 __init(__s, traits_type::length(__s)); 839# if _LIBCPP_DEBUG_LEVEL == 2 840 __get_db()->__insert_c(this); 841# endif 842 } 843 844 template <class = _EnableIf<__is_allocator<_Allocator>::value, nullptr_t> > 845 _LIBCPP_INLINE_VISIBILITY 846 basic_string(const _CharT* __s, const _Allocator& __a); 847 848#if _LIBCPP_STD_VER > 20 849 basic_string(nullptr_t) = delete; 850#endif 851 852 _LIBCPP_INLINE_VISIBILITY 853 basic_string(const _CharT* __s, size_type __n); 854 _LIBCPP_INLINE_VISIBILITY 855 basic_string(const _CharT* __s, size_type __n, const _Allocator& __a); 856 _LIBCPP_INLINE_VISIBILITY 857 basic_string(size_type __n, _CharT __c); 858 859 template <class = _EnableIf<__is_allocator<_Allocator>::value, nullptr_t> > 860 _LIBCPP_INLINE_VISIBILITY 861 basic_string(size_type __n, _CharT __c, const _Allocator& __a); 862 863 basic_string(const basic_string& __str, size_type __pos, size_type __n, 864 const _Allocator& __a = _Allocator()); 865 _LIBCPP_INLINE_VISIBILITY 866 basic_string(const basic_string& __str, size_type __pos, 867 const _Allocator& __a = _Allocator()); 868 869 template<class _Tp, class = _EnableIf<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value && !__is_same_uncvref<_Tp, basic_string>::value> > 870 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 871 basic_string(const _Tp& __t, size_type __pos, size_type __n, 872 const allocator_type& __a = allocator_type()); 873 874 template<class _Tp, class = _EnableIf<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value && 875 !__is_same_uncvref<_Tp, basic_string>::value> > 876 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 877 explicit basic_string(const _Tp& __t); 878 879 template<class _Tp, class = _EnableIf<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value && !__is_same_uncvref<_Tp, basic_string>::value> > 880 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 881 explicit basic_string(const _Tp& __t, const allocator_type& __a); 882 883 template<class _InputIterator, class = _EnableIf<__is_cpp17_input_iterator<_InputIterator>::value> > 884 _LIBCPP_INLINE_VISIBILITY 885 basic_string(_InputIterator __first, _InputIterator __last); 886 template<class _InputIterator, class = _EnableIf<__is_cpp17_input_iterator<_InputIterator>::value> > 887 _LIBCPP_INLINE_VISIBILITY 888 basic_string(_InputIterator __first, _InputIterator __last, const allocator_type& __a); 889#ifndef _LIBCPP_CXX03_LANG 890 _LIBCPP_INLINE_VISIBILITY 891 basic_string(initializer_list<_CharT> __il); 892 _LIBCPP_INLINE_VISIBILITY 893 basic_string(initializer_list<_CharT> __il, const _Allocator& __a); 894#endif // _LIBCPP_CXX03_LANG 895 896 inline ~basic_string(); 897 898 _LIBCPP_INLINE_VISIBILITY 899 operator __self_view() const _NOEXCEPT { return __self_view(data(), size()); } 900 901 basic_string& operator=(const basic_string& __str); 902 903 template <class _Tp, class = _EnableIf<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value && !__is_same_uncvref<_Tp, basic_string>::value> > 904 basic_string& operator=(const _Tp& __t) 905 {__self_view __sv = __t; return assign(__sv);} 906 907#ifndef _LIBCPP_CXX03_LANG 908 _LIBCPP_INLINE_VISIBILITY 909 basic_string& operator=(basic_string&& __str) 910 _NOEXCEPT_((__noexcept_move_assign_container<_Allocator, __alloc_traits>::value)); 911 _LIBCPP_INLINE_VISIBILITY 912 basic_string& operator=(initializer_list<value_type> __il) {return assign(__il.begin(), __il.size());} 913#endif 914 _LIBCPP_INLINE_VISIBILITY basic_string& operator=(const value_type* __s) {return assign(__s);} 915#if _LIBCPP_STD_VER > 20 916 basic_string& operator=(nullptr_t) = delete; 917#endif 918 basic_string& operator=(value_type __c); 919 920#if _LIBCPP_DEBUG_LEVEL == 2 921 _LIBCPP_INLINE_VISIBILITY 922 iterator begin() _NOEXCEPT 923 {return iterator(this, __get_pointer());} 924 _LIBCPP_INLINE_VISIBILITY 925 const_iterator begin() const _NOEXCEPT 926 {return const_iterator(this, __get_pointer());} 927 _LIBCPP_INLINE_VISIBILITY 928 iterator end() _NOEXCEPT 929 {return iterator(this, __get_pointer() + size());} 930 _LIBCPP_INLINE_VISIBILITY 931 const_iterator end() const _NOEXCEPT 932 {return const_iterator(this, __get_pointer() + size());} 933#else 934 _LIBCPP_INLINE_VISIBILITY 935 iterator begin() _NOEXCEPT 936 {return iterator(__get_pointer());} 937 _LIBCPP_INLINE_VISIBILITY 938 const_iterator begin() const _NOEXCEPT 939 {return const_iterator(__get_pointer());} 940 _LIBCPP_INLINE_VISIBILITY 941 iterator end() _NOEXCEPT 942 {return iterator(__get_pointer() + size());} 943 _LIBCPP_INLINE_VISIBILITY 944 const_iterator end() const _NOEXCEPT 945 {return const_iterator(__get_pointer() + size());} 946#endif // _LIBCPP_DEBUG_LEVEL == 2 947 _LIBCPP_INLINE_VISIBILITY 948 reverse_iterator rbegin() _NOEXCEPT 949 {return reverse_iterator(end());} 950 _LIBCPP_INLINE_VISIBILITY 951 const_reverse_iterator rbegin() const _NOEXCEPT 952 {return const_reverse_iterator(end());} 953 _LIBCPP_INLINE_VISIBILITY 954 reverse_iterator rend() _NOEXCEPT 955 {return reverse_iterator(begin());} 956 _LIBCPP_INLINE_VISIBILITY 957 const_reverse_iterator rend() const _NOEXCEPT 958 {return const_reverse_iterator(begin());} 959 960 _LIBCPP_INLINE_VISIBILITY 961 const_iterator cbegin() const _NOEXCEPT 962 {return begin();} 963 _LIBCPP_INLINE_VISIBILITY 964 const_iterator cend() const _NOEXCEPT 965 {return end();} 966 _LIBCPP_INLINE_VISIBILITY 967 const_reverse_iterator crbegin() const _NOEXCEPT 968 {return rbegin();} 969 _LIBCPP_INLINE_VISIBILITY 970 const_reverse_iterator crend() const _NOEXCEPT 971 {return rend();} 972 973 _LIBCPP_INLINE_VISIBILITY size_type size() const _NOEXCEPT 974 {return __is_long() ? __get_long_size() : __get_short_size();} 975 _LIBCPP_INLINE_VISIBILITY size_type length() const _NOEXCEPT {return size();} 976 _LIBCPP_INLINE_VISIBILITY size_type max_size() const _NOEXCEPT; 977 _LIBCPP_INLINE_VISIBILITY size_type capacity() const _NOEXCEPT 978 {return (__is_long() ? __get_long_cap() 979 : static_cast<size_type>(__min_cap)) - 1;} 980 981 void resize(size_type __n, value_type __c); 982 _LIBCPP_INLINE_VISIBILITY void resize(size_type __n) {resize(__n, value_type());} 983 984 void reserve(size_type __requested_capacity); 985 _LIBCPP_INLINE_VISIBILITY void __resize_default_init(size_type __n); 986 987 _LIBCPP_DEPRECATED_IN_CXX20 _LIBCPP_INLINE_VISIBILITY 988 void reserve() _NOEXCEPT {shrink_to_fit();} 989 _LIBCPP_INLINE_VISIBILITY 990 void shrink_to_fit() _NOEXCEPT; 991 _LIBCPP_INLINE_VISIBILITY 992 void clear() _NOEXCEPT; 993 _LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY 994 bool empty() const _NOEXCEPT {return size() == 0;} 995 996 _LIBCPP_INLINE_VISIBILITY const_reference operator[](size_type __pos) const _NOEXCEPT; 997 _LIBCPP_INLINE_VISIBILITY reference operator[](size_type __pos) _NOEXCEPT; 998 999 const_reference at(size_type __n) const; 1000 reference at(size_type __n); 1001 1002 _LIBCPP_INLINE_VISIBILITY basic_string& operator+=(const basic_string& __str) {return append(__str);} 1003 1004 template <class _Tp> 1005 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1006 _EnableIf 1007 < 1008 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value 1009 && !__is_same_uncvref<_Tp, basic_string >::value, 1010 basic_string& 1011 > 1012 operator+=(const _Tp& __t) {__self_view __sv = __t; return append(__sv);} 1013 _LIBCPP_INLINE_VISIBILITY basic_string& operator+=(const value_type* __s) {return append(__s);} 1014 _LIBCPP_INLINE_VISIBILITY basic_string& operator+=(value_type __c) {push_back(__c); return *this;} 1015#ifndef _LIBCPP_CXX03_LANG 1016 _LIBCPP_INLINE_VISIBILITY basic_string& operator+=(initializer_list<value_type> __il) {return append(__il);} 1017#endif // _LIBCPP_CXX03_LANG 1018 1019 _LIBCPP_INLINE_VISIBILITY 1020 basic_string& append(const basic_string& __str); 1021 1022 template <class _Tp> 1023 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1024 _EnableIf< 1025 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value 1026 && !__is_same_uncvref<_Tp, basic_string>::value, 1027 basic_string& 1028 > 1029 append(const _Tp& __t) { __self_view __sv = __t; return append(__sv.data(), __sv.size()); } 1030 basic_string& append(const basic_string& __str, size_type __pos, size_type __n=npos); 1031 1032 template <class _Tp> 1033 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1034 _EnableIf 1035 < 1036 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value 1037 && !__is_same_uncvref<_Tp, basic_string>::value, 1038 basic_string& 1039 > 1040 append(const _Tp& __t, size_type __pos, size_type __n=npos); 1041 basic_string& append(const value_type* __s, size_type __n); 1042 basic_string& append(const value_type* __s); 1043 basic_string& append(size_type __n, value_type __c); 1044 1045 _LIBCPP_INLINE_VISIBILITY 1046 void __append_default_init(size_type __n); 1047 1048 template<class _InputIterator> 1049 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1050 _EnableIf 1051 < 1052 __is_exactly_cpp17_input_iterator<_InputIterator>::value, 1053 basic_string& 1054 > 1055 _LIBCPP_INLINE_VISIBILITY 1056 append(_InputIterator __first, _InputIterator __last) { 1057 const basic_string __temp(__first, __last, __alloc()); 1058 append(__temp.data(), __temp.size()); 1059 return *this; 1060 } 1061 template<class _ForwardIterator> 1062 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1063 _EnableIf 1064 < 1065 __is_cpp17_forward_iterator<_ForwardIterator>::value, 1066 basic_string& 1067 > 1068 _LIBCPP_INLINE_VISIBILITY 1069 append(_ForwardIterator __first, _ForwardIterator __last); 1070 1071#ifndef _LIBCPP_CXX03_LANG 1072 _LIBCPP_INLINE_VISIBILITY 1073 basic_string& append(initializer_list<value_type> __il) {return append(__il.begin(), __il.size());} 1074#endif // _LIBCPP_CXX03_LANG 1075 1076 void push_back(value_type __c); 1077 _LIBCPP_INLINE_VISIBILITY 1078 void pop_back(); 1079 _LIBCPP_INLINE_VISIBILITY reference front() _NOEXCEPT; 1080 _LIBCPP_INLINE_VISIBILITY const_reference front() const _NOEXCEPT; 1081 _LIBCPP_INLINE_VISIBILITY reference back() _NOEXCEPT; 1082 _LIBCPP_INLINE_VISIBILITY const_reference back() const _NOEXCEPT; 1083 1084 template <class _Tp> 1085 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1086 _EnableIf 1087 < 1088 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1089 basic_string& 1090 > 1091 assign(const _Tp & __t) { __self_view __sv = __t; return assign(__sv.data(), __sv.size()); } 1092 _LIBCPP_INLINE_VISIBILITY 1093 basic_string& assign(const basic_string& __str) { return *this = __str; } 1094#ifndef _LIBCPP_CXX03_LANG 1095 _LIBCPP_INLINE_VISIBILITY 1096 basic_string& assign(basic_string&& __str) 1097 _NOEXCEPT_((__noexcept_move_assign_container<_Allocator, __alloc_traits>::value)) 1098 {*this = _VSTD::move(__str); return *this;} 1099#endif 1100 basic_string& assign(const basic_string& __str, size_type __pos, size_type __n=npos); 1101 template <class _Tp> 1102 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1103 _EnableIf 1104 < 1105 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value 1106 && !__is_same_uncvref<_Tp, basic_string>::value, 1107 basic_string& 1108 > 1109 assign(const _Tp & __t, size_type __pos, size_type __n=npos); 1110 basic_string& assign(const value_type* __s, size_type __n); 1111 basic_string& assign(const value_type* __s); 1112 basic_string& assign(size_type __n, value_type __c); 1113 template<class _InputIterator> 1114 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1115 _EnableIf 1116 < 1117 __is_exactly_cpp17_input_iterator<_InputIterator>::value, 1118 basic_string& 1119 > 1120 assign(_InputIterator __first, _InputIterator __last); 1121 template<class _ForwardIterator> 1122 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1123 _EnableIf 1124 < 1125 __is_cpp17_forward_iterator<_ForwardIterator>::value, 1126 basic_string& 1127 > 1128 assign(_ForwardIterator __first, _ForwardIterator __last); 1129#ifndef _LIBCPP_CXX03_LANG 1130 _LIBCPP_INLINE_VISIBILITY 1131 basic_string& assign(initializer_list<value_type> __il) {return assign(__il.begin(), __il.size());} 1132#endif // _LIBCPP_CXX03_LANG 1133 1134 _LIBCPP_INLINE_VISIBILITY 1135 basic_string& insert(size_type __pos1, const basic_string& __str); 1136 1137 template <class _Tp> 1138 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1139 _EnableIf 1140 < 1141 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1142 basic_string& 1143 > 1144 insert(size_type __pos1, const _Tp& __t) 1145 { __self_view __sv = __t; return insert(__pos1, __sv.data(), __sv.size()); } 1146 1147 template <class _Tp> 1148 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1149 _EnableIf 1150 < 1151 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value && !__is_same_uncvref<_Tp, basic_string>::value, 1152 basic_string& 1153 > 1154 insert(size_type __pos1, const _Tp& __t, size_type __pos2, size_type __n=npos); 1155 basic_string& insert(size_type __pos1, const basic_string& __str, size_type __pos2, size_type __n=npos); 1156 basic_string& insert(size_type __pos, const value_type* __s, size_type __n); 1157 basic_string& insert(size_type __pos, const value_type* __s); 1158 basic_string& insert(size_type __pos, size_type __n, value_type __c); 1159 iterator insert(const_iterator __pos, value_type __c); 1160 _LIBCPP_INLINE_VISIBILITY 1161 iterator insert(const_iterator __pos, size_type __n, value_type __c); 1162 template<class _InputIterator> 1163 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1164 _EnableIf 1165 < 1166 __is_exactly_cpp17_input_iterator<_InputIterator>::value, 1167 iterator 1168 > 1169 insert(const_iterator __pos, _InputIterator __first, _InputIterator __last); 1170 template<class _ForwardIterator> 1171 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1172 _EnableIf 1173 < 1174 __is_cpp17_forward_iterator<_ForwardIterator>::value, 1175 iterator 1176 > 1177 insert(const_iterator __pos, _ForwardIterator __first, _ForwardIterator __last); 1178#ifndef _LIBCPP_CXX03_LANG 1179 _LIBCPP_INLINE_VISIBILITY 1180 iterator insert(const_iterator __pos, initializer_list<value_type> __il) 1181 {return insert(__pos, __il.begin(), __il.end());} 1182#endif // _LIBCPP_CXX03_LANG 1183 1184 basic_string& erase(size_type __pos = 0, size_type __n = npos); 1185 _LIBCPP_INLINE_VISIBILITY 1186 iterator erase(const_iterator __pos); 1187 _LIBCPP_INLINE_VISIBILITY 1188 iterator erase(const_iterator __first, const_iterator __last); 1189 1190 _LIBCPP_INLINE_VISIBILITY 1191 basic_string& replace(size_type __pos1, size_type __n1, const basic_string& __str); 1192 1193 template <class _Tp> 1194 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1195 _EnableIf 1196 < 1197 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1198 basic_string& 1199 > 1200 replace(size_type __pos1, size_type __n1, const _Tp& __t) { __self_view __sv = __t; return replace(__pos1, __n1, __sv.data(), __sv.size()); } 1201 basic_string& replace(size_type __pos1, size_type __n1, const basic_string& __str, size_type __pos2, size_type __n2=npos); 1202 template <class _Tp> 1203 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1204 _EnableIf 1205 < 1206 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value && !__is_same_uncvref<_Tp, basic_string>::value, 1207 basic_string& 1208 > 1209 replace(size_type __pos1, size_type __n1, const _Tp& __t, size_type __pos2, size_type __n2=npos); 1210 basic_string& replace(size_type __pos, size_type __n1, const value_type* __s, size_type __n2); 1211 basic_string& replace(size_type __pos, size_type __n1, const value_type* __s); 1212 basic_string& replace(size_type __pos, size_type __n1, size_type __n2, value_type __c); 1213 _LIBCPP_INLINE_VISIBILITY 1214 basic_string& replace(const_iterator __i1, const_iterator __i2, const basic_string& __str); 1215 1216 template <class _Tp> 1217 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1218 _EnableIf 1219 < 1220 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1221 basic_string& 1222 > 1223 replace(const_iterator __i1, const_iterator __i2, const _Tp& __t) { __self_view __sv = __t; return replace(__i1 - begin(), __i2 - __i1, __sv); } 1224 1225 _LIBCPP_INLINE_VISIBILITY 1226 basic_string& replace(const_iterator __i1, const_iterator __i2, const value_type* __s, size_type __n); 1227 _LIBCPP_INLINE_VISIBILITY 1228 basic_string& replace(const_iterator __i1, const_iterator __i2, const value_type* __s); 1229 _LIBCPP_INLINE_VISIBILITY 1230 basic_string& replace(const_iterator __i1, const_iterator __i2, size_type __n, value_type __c); 1231 template<class _InputIterator> 1232 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1233 _EnableIf 1234 < 1235 __is_cpp17_input_iterator<_InputIterator>::value, 1236 basic_string& 1237 > 1238 replace(const_iterator __i1, const_iterator __i2, _InputIterator __j1, _InputIterator __j2); 1239#ifndef _LIBCPP_CXX03_LANG 1240 _LIBCPP_INLINE_VISIBILITY 1241 basic_string& replace(const_iterator __i1, const_iterator __i2, initializer_list<value_type> __il) 1242 {return replace(__i1, __i2, __il.begin(), __il.end());} 1243#endif // _LIBCPP_CXX03_LANG 1244 1245 size_type copy(value_type* __s, size_type __n, size_type __pos = 0) const; 1246 _LIBCPP_INLINE_VISIBILITY 1247 basic_string substr(size_type __pos = 0, size_type __n = npos) const; 1248 1249 _LIBCPP_INLINE_VISIBILITY 1250 void swap(basic_string& __str) 1251#if _LIBCPP_STD_VER >= 14 1252 _NOEXCEPT; 1253#else 1254 _NOEXCEPT_(!__alloc_traits::propagate_on_container_swap::value || 1255 __is_nothrow_swappable<allocator_type>::value); 1256#endif 1257 1258 _LIBCPP_INLINE_VISIBILITY 1259 const value_type* c_str() const _NOEXCEPT {return data();} 1260 _LIBCPP_INLINE_VISIBILITY 1261 const value_type* data() const _NOEXCEPT {return _VSTD::__to_address(__get_pointer());} 1262#if _LIBCPP_STD_VER > 14 || defined(_LIBCPP_BUILDING_LIBRARY) 1263 _LIBCPP_INLINE_VISIBILITY 1264 value_type* data() _NOEXCEPT {return _VSTD::__to_address(__get_pointer());} 1265#endif 1266 1267 _LIBCPP_INLINE_VISIBILITY 1268 allocator_type get_allocator() const _NOEXCEPT {return __alloc();} 1269 1270 _LIBCPP_INLINE_VISIBILITY 1271 size_type find(const basic_string& __str, size_type __pos = 0) const _NOEXCEPT; 1272 1273 template <class _Tp> 1274 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1275 _EnableIf 1276 < 1277 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1278 size_type 1279 > 1280 find(const _Tp& __t, size_type __pos = 0) const _NOEXCEPT; 1281 size_type find(const value_type* __s, size_type __pos, size_type __n) const _NOEXCEPT; 1282 _LIBCPP_INLINE_VISIBILITY 1283 size_type find(const value_type* __s, size_type __pos = 0) const _NOEXCEPT; 1284 size_type find(value_type __c, size_type __pos = 0) const _NOEXCEPT; 1285 1286 _LIBCPP_INLINE_VISIBILITY 1287 size_type rfind(const basic_string& __str, size_type __pos = npos) const _NOEXCEPT; 1288 1289 template <class _Tp> 1290 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1291 _EnableIf 1292 < 1293 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1294 size_type 1295 > 1296 rfind(const _Tp& __t, size_type __pos = npos) const _NOEXCEPT; 1297 size_type rfind(const value_type* __s, size_type __pos, size_type __n) const _NOEXCEPT; 1298 _LIBCPP_INLINE_VISIBILITY 1299 size_type rfind(const value_type* __s, size_type __pos = npos) const _NOEXCEPT; 1300 size_type rfind(value_type __c, size_type __pos = npos) const _NOEXCEPT; 1301 1302 _LIBCPP_INLINE_VISIBILITY 1303 size_type find_first_of(const basic_string& __str, size_type __pos = 0) const _NOEXCEPT; 1304 1305 template <class _Tp> 1306 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1307 _EnableIf 1308 < 1309 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1310 size_type 1311 > 1312 find_first_of(const _Tp& __t, size_type __pos = 0) const _NOEXCEPT; 1313 size_type find_first_of(const value_type* __s, size_type __pos, size_type __n) const _NOEXCEPT; 1314 _LIBCPP_INLINE_VISIBILITY 1315 size_type find_first_of(const value_type* __s, size_type __pos = 0) const _NOEXCEPT; 1316 _LIBCPP_INLINE_VISIBILITY 1317 size_type find_first_of(value_type __c, size_type __pos = 0) const _NOEXCEPT; 1318 1319 _LIBCPP_INLINE_VISIBILITY 1320 size_type find_last_of(const basic_string& __str, size_type __pos = npos) const _NOEXCEPT; 1321 1322 template <class _Tp> 1323 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1324 _EnableIf 1325 < 1326 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1327 size_type 1328 > 1329 find_last_of(const _Tp& __t, size_type __pos = npos) const _NOEXCEPT; 1330 size_type find_last_of(const value_type* __s, size_type __pos, size_type __n) const _NOEXCEPT; 1331 _LIBCPP_INLINE_VISIBILITY 1332 size_type find_last_of(const value_type* __s, size_type __pos = npos) const _NOEXCEPT; 1333 _LIBCPP_INLINE_VISIBILITY 1334 size_type find_last_of(value_type __c, size_type __pos = npos) const _NOEXCEPT; 1335 1336 _LIBCPP_INLINE_VISIBILITY 1337 size_type find_first_not_of(const basic_string& __str, size_type __pos = 0) const _NOEXCEPT; 1338 1339 template <class _Tp> 1340 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1341 _EnableIf 1342 < 1343 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1344 size_type 1345 > 1346 find_first_not_of(const _Tp &__t, size_type __pos = 0) const _NOEXCEPT; 1347 size_type find_first_not_of(const value_type* __s, size_type __pos, size_type __n) const _NOEXCEPT; 1348 _LIBCPP_INLINE_VISIBILITY 1349 size_type find_first_not_of(const value_type* __s, size_type __pos = 0) const _NOEXCEPT; 1350 _LIBCPP_INLINE_VISIBILITY 1351 size_type find_first_not_of(value_type __c, size_type __pos = 0) const _NOEXCEPT; 1352 1353 _LIBCPP_INLINE_VISIBILITY 1354 size_type find_last_not_of(const basic_string& __str, size_type __pos = npos) const _NOEXCEPT; 1355 1356 template <class _Tp> 1357 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1358 _EnableIf 1359 < 1360 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1361 size_type 1362 > 1363 find_last_not_of(const _Tp& __t, size_type __pos = npos) const _NOEXCEPT; 1364 size_type find_last_not_of(const value_type* __s, size_type __pos, size_type __n) const _NOEXCEPT; 1365 _LIBCPP_INLINE_VISIBILITY 1366 size_type find_last_not_of(const value_type* __s, size_type __pos = npos) const _NOEXCEPT; 1367 _LIBCPP_INLINE_VISIBILITY 1368 size_type find_last_not_of(value_type __c, size_type __pos = npos) const _NOEXCEPT; 1369 1370 _LIBCPP_INLINE_VISIBILITY 1371 int compare(const basic_string& __str) const _NOEXCEPT; 1372 1373 template <class _Tp> 1374 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1375 _EnableIf 1376 < 1377 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1378 int 1379 > 1380 compare(const _Tp &__t) const _NOEXCEPT; 1381 1382 template <class _Tp> 1383 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1384 _EnableIf 1385 < 1386 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1387 int 1388 > 1389 compare(size_type __pos1, size_type __n1, const _Tp& __t) const; 1390 1391 _LIBCPP_INLINE_VISIBILITY 1392 int compare(size_type __pos1, size_type __n1, const basic_string& __str) const; 1393 int compare(size_type __pos1, size_type __n1, const basic_string& __str, size_type __pos2, size_type __n2=npos) const; 1394 1395 template <class _Tp> 1396 inline _LIBCPP_INLINE_VISIBILITY 1397 _EnableIf 1398 < 1399 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value && !__is_same_uncvref<_Tp, basic_string>::value, 1400 int 1401 > 1402 compare(size_type __pos1, size_type __n1, const _Tp& __t, size_type __pos2, size_type __n2=npos) const; 1403 int compare(const value_type* __s) const _NOEXCEPT; 1404 int compare(size_type __pos1, size_type __n1, const value_type* __s) const; 1405 int compare(size_type __pos1, size_type __n1, const value_type* __s, size_type __n2) const; 1406 1407#if _LIBCPP_STD_VER > 17 1408 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 1409 bool starts_with(__self_view __sv) const _NOEXCEPT 1410 { return __self_view(data(), size()).starts_with(__sv); } 1411 1412 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 1413 bool starts_with(value_type __c) const _NOEXCEPT 1414 { return !empty() && _Traits::eq(front(), __c); } 1415 1416 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 1417 bool starts_with(const value_type* __s) const _NOEXCEPT 1418 { return starts_with(__self_view(__s)); } 1419 1420 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 1421 bool ends_with(__self_view __sv) const _NOEXCEPT 1422 { return __self_view(data(), size()).ends_with( __sv); } 1423 1424 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 1425 bool ends_with(value_type __c) const _NOEXCEPT 1426 { return !empty() && _Traits::eq(back(), __c); } 1427 1428 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 1429 bool ends_with(const value_type* __s) const _NOEXCEPT 1430 { return ends_with(__self_view(__s)); } 1431#endif 1432 1433#if _LIBCPP_STD_VER > 20 1434 constexpr _LIBCPP_INLINE_VISIBILITY 1435 bool contains(__self_view __sv) const noexcept 1436 { return __self_view(data(), size()).contains(__sv); } 1437 1438 constexpr _LIBCPP_INLINE_VISIBILITY 1439 bool contains(value_type __c) const noexcept 1440 { return __self_view(data(), size()).contains(__c); } 1441 1442 constexpr _LIBCPP_INLINE_VISIBILITY 1443 bool contains(const value_type* __s) const 1444 { return __self_view(data(), size()).contains(__s); } 1445#endif 1446 1447 _LIBCPP_INLINE_VISIBILITY bool __invariants() const; 1448 1449 _LIBCPP_INLINE_VISIBILITY void __clear_and_shrink() _NOEXCEPT; 1450 1451 _LIBCPP_INLINE_VISIBILITY void __shrink_or_extend(size_type __target_capacity); 1452 1453 _LIBCPP_INLINE_VISIBILITY 1454 bool __is_long() const _NOEXCEPT 1455 {return bool(__r_.first().__s.__size_ & __short_mask);} 1456 1457#if _LIBCPP_DEBUG_LEVEL == 2 1458 1459 bool __dereferenceable(const const_iterator* __i) const; 1460 bool __decrementable(const const_iterator* __i) const; 1461 bool __addable(const const_iterator* __i, ptrdiff_t __n) const; 1462 bool __subscriptable(const const_iterator* __i, ptrdiff_t __n) const; 1463 1464#endif // _LIBCPP_DEBUG_LEVEL == 2 1465 1466private: 1467 _LIBCPP_INLINE_VISIBILITY 1468 allocator_type& __alloc() _NOEXCEPT 1469 {return __r_.second();} 1470 _LIBCPP_INLINE_VISIBILITY 1471 const allocator_type& __alloc() const _NOEXCEPT 1472 {return __r_.second();} 1473 1474#ifdef _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT 1475 1476 _LIBCPP_INLINE_VISIBILITY 1477 void __set_short_size(size_type __s) _NOEXCEPT 1478# ifdef _LIBCPP_BIG_ENDIAN 1479 {__r_.first().__s.__size_ = (unsigned char)(__s << 1);} 1480# else 1481 {__r_.first().__s.__size_ = (unsigned char)(__s);} 1482# endif 1483 1484 _LIBCPP_INLINE_VISIBILITY 1485 size_type __get_short_size() const _NOEXCEPT 1486# ifdef _LIBCPP_BIG_ENDIAN 1487 {return __r_.first().__s.__size_ >> 1;} 1488# else 1489 {return __r_.first().__s.__size_;} 1490# endif 1491 1492#else // _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT 1493 1494 _LIBCPP_INLINE_VISIBILITY 1495 void __set_short_size(size_type __s) _NOEXCEPT 1496# ifdef _LIBCPP_BIG_ENDIAN 1497 {__r_.first().__s.__size_ = (unsigned char)(__s);} 1498# else 1499 {__r_.first().__s.__size_ = (unsigned char)(__s << 1);} 1500# endif 1501 1502 _LIBCPP_INLINE_VISIBILITY 1503 size_type __get_short_size() const _NOEXCEPT 1504# ifdef _LIBCPP_BIG_ENDIAN 1505 {return __r_.first().__s.__size_;} 1506# else 1507 {return __r_.first().__s.__size_ >> 1;} 1508# endif 1509 1510#endif // _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT 1511 1512 _LIBCPP_INLINE_VISIBILITY 1513 void __set_long_size(size_type __s) _NOEXCEPT 1514 {__r_.first().__l.__size_ = __s;} 1515 _LIBCPP_INLINE_VISIBILITY 1516 size_type __get_long_size() const _NOEXCEPT 1517 {return __r_.first().__l.__size_;} 1518 _LIBCPP_INLINE_VISIBILITY 1519 void __set_size(size_type __s) _NOEXCEPT 1520 {if (__is_long()) __set_long_size(__s); else __set_short_size(__s);} 1521 1522 _LIBCPP_INLINE_VISIBILITY 1523 void __set_long_cap(size_type __s) _NOEXCEPT 1524 {__r_.first().__l.__cap_ = __long_mask | __s;} 1525 _LIBCPP_INLINE_VISIBILITY 1526 size_type __get_long_cap() const _NOEXCEPT 1527 {return __r_.first().__l.__cap_ & size_type(~__long_mask);} 1528 1529 _LIBCPP_INLINE_VISIBILITY 1530 void __set_long_pointer(pointer __p) _NOEXCEPT 1531 {__r_.first().__l.__data_ = __p;} 1532 _LIBCPP_INLINE_VISIBILITY 1533 pointer __get_long_pointer() _NOEXCEPT 1534 {return __r_.first().__l.__data_;} 1535 _LIBCPP_INLINE_VISIBILITY 1536 const_pointer __get_long_pointer() const _NOEXCEPT 1537 {return __r_.first().__l.__data_;} 1538 _LIBCPP_INLINE_VISIBILITY 1539 pointer __get_short_pointer() _NOEXCEPT 1540 {return pointer_traits<pointer>::pointer_to(__r_.first().__s.__data_[0]);} 1541 _LIBCPP_INLINE_VISIBILITY 1542 const_pointer __get_short_pointer() const _NOEXCEPT 1543 {return pointer_traits<const_pointer>::pointer_to(__r_.first().__s.__data_[0]);} 1544 _LIBCPP_INLINE_VISIBILITY 1545 pointer __get_pointer() _NOEXCEPT 1546 {return __is_long() ? __get_long_pointer() : __get_short_pointer();} 1547 _LIBCPP_INLINE_VISIBILITY 1548 const_pointer __get_pointer() const _NOEXCEPT 1549 {return __is_long() ? __get_long_pointer() : __get_short_pointer();} 1550 1551 _LIBCPP_INLINE_VISIBILITY 1552 void __zero() _NOEXCEPT 1553 { 1554 size_type (&__a)[__n_words] = __r_.first().__r.__words; 1555 for (unsigned __i = 0; __i < __n_words; ++__i) 1556 __a[__i] = 0; 1557 } 1558 1559 template <size_type __a> static 1560 _LIBCPP_INLINE_VISIBILITY 1561 size_type __align_it(size_type __s) _NOEXCEPT 1562 {return (__s + (__a-1)) & ~(__a-1);} 1563 enum {__alignment = 16}; 1564 static _LIBCPP_INLINE_VISIBILITY 1565 size_type __recommend(size_type __s) _NOEXCEPT 1566 { 1567 if (__s < __min_cap) return static_cast<size_type>(__min_cap) - 1; 1568 size_type __guess = __align_it<sizeof(value_type) < __alignment ? 1569 __alignment/sizeof(value_type) : 1 > (__s+1) - 1; 1570 if (__guess == __min_cap) ++__guess; 1571 return __guess; 1572 } 1573 1574 inline 1575 void __init(const value_type* __s, size_type __sz, size_type __reserve); 1576 inline 1577 void __init(const value_type* __s, size_type __sz); 1578 inline 1579 void __init(size_type __n, value_type __c); 1580 1581 // Slow path for the (inlined) copy constructor for 'long' strings. 1582 // Always externally instantiated and not inlined. 1583 // Requires that __s is zero terminated. 1584 // The main reason for this function to exist is because for unstable, we 1585 // want to allow inlining of the copy constructor. However, we don't want 1586 // to call the __init() functions as those are marked as inline which may 1587 // result in over-aggressive inlining by the compiler, where our aim is 1588 // to only inline the fast path code directly in the ctor. 1589 void __init_copy_ctor_external(const value_type* __s, size_type __sz); 1590 1591 template <class _InputIterator> 1592 inline 1593 _EnableIf 1594 < 1595 __is_exactly_cpp17_input_iterator<_InputIterator>::value 1596 > 1597 __init(_InputIterator __first, _InputIterator __last); 1598 1599 template <class _ForwardIterator> 1600 inline 1601 _EnableIf 1602 < 1603 __is_cpp17_forward_iterator<_ForwardIterator>::value 1604 > 1605 __init(_ForwardIterator __first, _ForwardIterator __last); 1606 1607 void __grow_by(size_type __old_cap, size_type __delta_cap, size_type __old_sz, 1608 size_type __n_copy, size_type __n_del, size_type __n_add = 0); 1609 void __grow_by_and_replace(size_type __old_cap, size_type __delta_cap, size_type __old_sz, 1610 size_type __n_copy, size_type __n_del, 1611 size_type __n_add, const value_type* __p_new_stuff); 1612 1613 // __assign_no_alias is invoked for assignment operations where we 1614 // have proof that the input does not alias the current instance. 1615 // For example, operator=(basic_string) performs a 'self' check. 1616 template <bool __is_short> 1617 basic_string& __assign_no_alias(const value_type* __s, size_type __n); 1618 1619 _LIBCPP_INLINE_VISIBILITY 1620 void __erase_to_end(size_type __pos); 1621 1622 // __erase_external_with_move is invoked for erase() invocations where 1623 // `n ~= npos`, likely requiring memory moves on the string data. 1624 void __erase_external_with_move(size_type __pos, size_type __n); 1625 1626 _LIBCPP_INLINE_VISIBILITY 1627 void __copy_assign_alloc(const basic_string& __str) 1628 {__copy_assign_alloc(__str, integral_constant<bool, 1629 __alloc_traits::propagate_on_container_copy_assignment::value>());} 1630 1631 _LIBCPP_INLINE_VISIBILITY 1632 void __copy_assign_alloc(const basic_string& __str, true_type) 1633 { 1634 if (__alloc() == __str.__alloc()) 1635 __alloc() = __str.__alloc(); 1636 else 1637 { 1638 if (!__str.__is_long()) 1639 { 1640 __clear_and_shrink(); 1641 __alloc() = __str.__alloc(); 1642 } 1643 else 1644 { 1645 allocator_type __a = __str.__alloc(); 1646 pointer __p = __alloc_traits::allocate(__a, __str.__get_long_cap()); 1647 __clear_and_shrink(); 1648 __alloc() = _VSTD::move(__a); 1649 __set_long_pointer(__p); 1650 __set_long_cap(__str.__get_long_cap()); 1651 __set_long_size(__str.size()); 1652 } 1653 } 1654 } 1655 1656 _LIBCPP_INLINE_VISIBILITY 1657 void __copy_assign_alloc(const basic_string&, false_type) _NOEXCEPT 1658 {} 1659 1660#ifndef _LIBCPP_CXX03_LANG 1661 _LIBCPP_INLINE_VISIBILITY 1662 void __move_assign(basic_string& __str, false_type) 1663 _NOEXCEPT_(__alloc_traits::is_always_equal::value); 1664 _LIBCPP_INLINE_VISIBILITY 1665 void __move_assign(basic_string& __str, true_type) 1666#if _LIBCPP_STD_VER > 14 1667 _NOEXCEPT; 1668#else 1669 _NOEXCEPT_(is_nothrow_move_assignable<allocator_type>::value); 1670#endif 1671#endif 1672 1673 _LIBCPP_INLINE_VISIBILITY 1674 void 1675 __move_assign_alloc(basic_string& __str) 1676 _NOEXCEPT_( 1677 !__alloc_traits::propagate_on_container_move_assignment::value || 1678 is_nothrow_move_assignable<allocator_type>::value) 1679 {__move_assign_alloc(__str, integral_constant<bool, 1680 __alloc_traits::propagate_on_container_move_assignment::value>());} 1681 1682 _LIBCPP_INLINE_VISIBILITY 1683 void __move_assign_alloc(basic_string& __c, true_type) 1684 _NOEXCEPT_(is_nothrow_move_assignable<allocator_type>::value) 1685 { 1686 __alloc() = _VSTD::move(__c.__alloc()); 1687 } 1688 1689 _LIBCPP_INLINE_VISIBILITY 1690 void __move_assign_alloc(basic_string&, false_type) 1691 _NOEXCEPT 1692 {} 1693 1694 basic_string& __assign_external(const value_type* __s); 1695 basic_string& __assign_external(const value_type* __s, size_type __n); 1696 1697 // Assigns the value in __s, guaranteed to be __n < __min_cap in length. 1698 inline basic_string& __assign_short(const value_type* __s, size_type __n) { 1699 pointer __p = __is_long() 1700 ? (__set_long_size(__n), __get_long_pointer()) 1701 : (__set_short_size(__n), __get_short_pointer()); 1702 traits_type::move(_VSTD::__to_address(__p), __s, __n); 1703 traits_type::assign(__p[__n], value_type()); 1704 return *this; 1705 } 1706 1707 _LIBCPP_INLINE_VISIBILITY void __invalidate_all_iterators(); 1708 _LIBCPP_INLINE_VISIBILITY void __invalidate_iterators_past(size_type); 1709 1710 template<class _Tp> 1711 _LIBCPP_INLINE_VISIBILITY 1712 bool __addr_in_range(_Tp&& __t) const { 1713 const volatile void *__p = _VSTD::addressof(__t); 1714 return data() <= __p && __p <= data() + size(); 1715 } 1716 1717 friend basic_string operator+<>(const basic_string&, const basic_string&); 1718 friend basic_string operator+<>(const value_type*, const basic_string&); 1719 friend basic_string operator+<>(value_type, const basic_string&); 1720 friend basic_string operator+<>(const basic_string&, const value_type*); 1721 friend basic_string operator+<>(const basic_string&, value_type); 1722}; 1723 1724// These declarations must appear before any functions are implicitly used 1725// so that they have the correct visibility specifier. 1726#ifdef _LIBCPP_ABI_STRING_OPTIMIZED_EXTERNAL_INSTANTIATION 1727_LIBCPP_STRING_UNSTABLE_EXTERN_TEMPLATE_LIST(_LIBCPP_EXTERN_TEMPLATE, char) 1728_LIBCPP_STRING_UNSTABLE_EXTERN_TEMPLATE_LIST(_LIBCPP_EXTERN_TEMPLATE, wchar_t) 1729#else 1730_LIBCPP_STRING_V1_EXTERN_TEMPLATE_LIST(_LIBCPP_EXTERN_TEMPLATE, char) 1731_LIBCPP_STRING_V1_EXTERN_TEMPLATE_LIST(_LIBCPP_EXTERN_TEMPLATE, wchar_t) 1732#endif 1733 1734 1735#ifndef _LIBCPP_HAS_NO_DEDUCTION_GUIDES 1736template<class _InputIterator, 1737 class _CharT = __iter_value_type<_InputIterator>, 1738 class _Allocator = allocator<_CharT>, 1739 class = _EnableIf<__is_cpp17_input_iterator<_InputIterator>::value>, 1740 class = _EnableIf<__is_allocator<_Allocator>::value> 1741 > 1742basic_string(_InputIterator, _InputIterator, _Allocator = _Allocator()) 1743 -> basic_string<_CharT, char_traits<_CharT>, _Allocator>; 1744 1745template<class _CharT, 1746 class _Traits, 1747 class _Allocator = allocator<_CharT>, 1748 class = _EnableIf<__is_allocator<_Allocator>::value> 1749 > 1750explicit basic_string(basic_string_view<_CharT, _Traits>, const _Allocator& = _Allocator()) 1751 -> basic_string<_CharT, _Traits, _Allocator>; 1752 1753template<class _CharT, 1754 class _Traits, 1755 class _Allocator = allocator<_CharT>, 1756 class = _EnableIf<__is_allocator<_Allocator>::value>, 1757 class _Sz = typename allocator_traits<_Allocator>::size_type 1758 > 1759basic_string(basic_string_view<_CharT, _Traits>, _Sz, _Sz, const _Allocator& = _Allocator()) 1760 -> basic_string<_CharT, _Traits, _Allocator>; 1761#endif 1762 1763template <class _CharT, class _Traits, class _Allocator> 1764inline 1765void 1766basic_string<_CharT, _Traits, _Allocator>::__invalidate_all_iterators() 1767{ 1768#if _LIBCPP_DEBUG_LEVEL == 2 1769 __get_db()->__invalidate_all(this); 1770#endif 1771} 1772 1773template <class _CharT, class _Traits, class _Allocator> 1774inline 1775void 1776basic_string<_CharT, _Traits, _Allocator>::__invalidate_iterators_past(size_type __pos) 1777{ 1778#if _LIBCPP_DEBUG_LEVEL == 2 1779 __c_node* __c = __get_db()->__find_c_and_lock(this); 1780 if (__c) 1781 { 1782 const_pointer __new_last = __get_pointer() + __pos; 1783 for (__i_node** __p = __c->end_; __p != __c->beg_; ) 1784 { 1785 --__p; 1786 const_iterator* __i = static_cast<const_iterator*>((*__p)->__i_); 1787 if (__i->base() > __new_last) 1788 { 1789 (*__p)->__c_ = nullptr; 1790 if (--__c->end_ != __p) 1791 _VSTD::memmove(__p, __p+1, (__c->end_ - __p)*sizeof(__i_node*)); 1792 } 1793 } 1794 __get_db()->unlock(); 1795 } 1796#else 1797 (void)__pos; 1798#endif // _LIBCPP_DEBUG_LEVEL == 2 1799} 1800 1801template <class _CharT, class _Traits, class _Allocator> 1802inline 1803basic_string<_CharT, _Traits, _Allocator>::basic_string() 1804 _NOEXCEPT_(is_nothrow_default_constructible<allocator_type>::value) 1805 : __r_(__default_init_tag(), __default_init_tag()) 1806{ 1807#if _LIBCPP_DEBUG_LEVEL == 2 1808 __get_db()->__insert_c(this); 1809#endif 1810 __zero(); 1811} 1812 1813template <class _CharT, class _Traits, class _Allocator> 1814inline 1815basic_string<_CharT, _Traits, _Allocator>::basic_string(const allocator_type& __a) 1816#if _LIBCPP_STD_VER <= 14 1817 _NOEXCEPT_(is_nothrow_copy_constructible<allocator_type>::value) 1818#else 1819 _NOEXCEPT 1820#endif 1821: __r_(__default_init_tag(), __a) 1822{ 1823#if _LIBCPP_DEBUG_LEVEL == 2 1824 __get_db()->__insert_c(this); 1825#endif 1826 __zero(); 1827} 1828 1829template <class _CharT, class _Traits, class _Allocator> 1830void basic_string<_CharT, _Traits, _Allocator>::__init(const value_type* __s, 1831 size_type __sz, 1832 size_type __reserve) 1833{ 1834 if (__reserve > max_size()) 1835 this->__throw_length_error(); 1836 pointer __p; 1837 if (__reserve < __min_cap) 1838 { 1839 __set_short_size(__sz); 1840 __p = __get_short_pointer(); 1841 } 1842 else 1843 { 1844 size_type __cap = __recommend(__reserve); 1845 __p = __alloc_traits::allocate(__alloc(), __cap+1); 1846 __set_long_pointer(__p); 1847 __set_long_cap(__cap+1); 1848 __set_long_size(__sz); 1849 } 1850 traits_type::copy(_VSTD::__to_address(__p), __s, __sz); 1851 traits_type::assign(__p[__sz], value_type()); 1852} 1853 1854template <class _CharT, class _Traits, class _Allocator> 1855void 1856basic_string<_CharT, _Traits, _Allocator>::__init(const value_type* __s, size_type __sz) 1857{ 1858 if (__sz > max_size()) 1859 this->__throw_length_error(); 1860 pointer __p; 1861 if (__sz < __min_cap) 1862 { 1863 __set_short_size(__sz); 1864 __p = __get_short_pointer(); 1865 } 1866 else 1867 { 1868 size_type __cap = __recommend(__sz); 1869 __p = __alloc_traits::allocate(__alloc(), __cap+1); 1870 __set_long_pointer(__p); 1871 __set_long_cap(__cap+1); 1872 __set_long_size(__sz); 1873 } 1874 traits_type::copy(_VSTD::__to_address(__p), __s, __sz); 1875 traits_type::assign(__p[__sz], value_type()); 1876} 1877 1878template <class _CharT, class _Traits, class _Allocator> 1879template <class> 1880basic_string<_CharT, _Traits, _Allocator>::basic_string(const _CharT* __s, const _Allocator& __a) 1881 : __r_(__default_init_tag(), __a) 1882{ 1883 _LIBCPP_ASSERT(__s != nullptr, "basic_string(const char*, allocator) detected nullptr"); 1884 __init(__s, traits_type::length(__s)); 1885#if _LIBCPP_DEBUG_LEVEL == 2 1886 __get_db()->__insert_c(this); 1887#endif 1888} 1889 1890template <class _CharT, class _Traits, class _Allocator> 1891inline 1892basic_string<_CharT, _Traits, _Allocator>::basic_string(const _CharT* __s, size_type __n) 1893 : __r_(__default_init_tag(), __default_init_tag()) 1894{ 1895 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "basic_string(const char*, n) detected nullptr"); 1896 __init(__s, __n); 1897#if _LIBCPP_DEBUG_LEVEL == 2 1898 __get_db()->__insert_c(this); 1899#endif 1900} 1901 1902template <class _CharT, class _Traits, class _Allocator> 1903inline 1904basic_string<_CharT, _Traits, _Allocator>::basic_string(const _CharT* __s, size_type __n, const _Allocator& __a) 1905 : __r_(__default_init_tag(), __a) 1906{ 1907 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "basic_string(const char*, n, allocator) detected nullptr"); 1908 __init(__s, __n); 1909#if _LIBCPP_DEBUG_LEVEL == 2 1910 __get_db()->__insert_c(this); 1911#endif 1912} 1913 1914template <class _CharT, class _Traits, class _Allocator> 1915basic_string<_CharT, _Traits, _Allocator>::basic_string(const basic_string& __str) 1916 : __r_(__default_init_tag(), __alloc_traits::select_on_container_copy_construction(__str.__alloc())) 1917{ 1918 if (!__str.__is_long()) 1919 __r_.first().__r = __str.__r_.first().__r; 1920 else 1921 __init_copy_ctor_external(_VSTD::__to_address(__str.__get_long_pointer()), 1922 __str.__get_long_size()); 1923 1924#if _LIBCPP_DEBUG_LEVEL == 2 1925 __get_db()->__insert_c(this); 1926#endif 1927} 1928 1929template <class _CharT, class _Traits, class _Allocator> 1930basic_string<_CharT, _Traits, _Allocator>::basic_string( 1931 const basic_string& __str, const allocator_type& __a) 1932 : __r_(__default_init_tag(), __a) 1933{ 1934 if (!__str.__is_long()) 1935 __r_.first().__r = __str.__r_.first().__r; 1936 else 1937 __init_copy_ctor_external(_VSTD::__to_address(__str.__get_long_pointer()), 1938 __str.__get_long_size()); 1939#if _LIBCPP_DEBUG_LEVEL == 2 1940 __get_db()->__insert_c(this); 1941#endif 1942} 1943 1944template <class _CharT, class _Traits, class _Allocator> 1945void basic_string<_CharT, _Traits, _Allocator>::__init_copy_ctor_external( 1946 const value_type* __s, size_type __sz) { 1947 pointer __p; 1948 if (__sz < __min_cap) { 1949 __p = __get_short_pointer(); 1950 __set_short_size(__sz); 1951 } else { 1952 if (__sz > max_size()) 1953 this->__throw_length_error(); 1954 size_t __cap = __recommend(__sz); 1955 __p = __alloc_traits::allocate(__alloc(), __cap + 1); 1956 __set_long_pointer(__p); 1957 __set_long_cap(__cap + 1); 1958 __set_long_size(__sz); 1959 } 1960 traits_type::copy(_VSTD::__to_address(__p), __s, __sz + 1); 1961} 1962 1963#ifndef _LIBCPP_CXX03_LANG 1964 1965template <class _CharT, class _Traits, class _Allocator> 1966inline 1967basic_string<_CharT, _Traits, _Allocator>::basic_string(basic_string&& __str) 1968#if _LIBCPP_STD_VER <= 14 1969 _NOEXCEPT_(is_nothrow_move_constructible<allocator_type>::value) 1970#else 1971 _NOEXCEPT 1972#endif 1973 : __r_(_VSTD::move(__str.__r_)) 1974{ 1975 __str.__zero(); 1976#if _LIBCPP_DEBUG_LEVEL == 2 1977 __get_db()->__insert_c(this); 1978 if (__is_long()) 1979 __get_db()->swap(this, &__str); 1980#endif 1981} 1982 1983template <class _CharT, class _Traits, class _Allocator> 1984inline 1985basic_string<_CharT, _Traits, _Allocator>::basic_string(basic_string&& __str, const allocator_type& __a) 1986 : __r_(__default_init_tag(), __a) 1987{ 1988 if (__str.__is_long() && __a != __str.__alloc()) // copy, not move 1989 __init(_VSTD::__to_address(__str.__get_long_pointer()), __str.__get_long_size()); 1990 else 1991 { 1992 __r_.first().__r = __str.__r_.first().__r; 1993 __str.__zero(); 1994 } 1995#if _LIBCPP_DEBUG_LEVEL == 2 1996 __get_db()->__insert_c(this); 1997 if (__is_long()) 1998 __get_db()->swap(this, &__str); 1999#endif 2000} 2001 2002#endif // _LIBCPP_CXX03_LANG 2003 2004template <class _CharT, class _Traits, class _Allocator> 2005void 2006basic_string<_CharT, _Traits, _Allocator>::__init(size_type __n, value_type __c) 2007{ 2008 if (__n > max_size()) 2009 this->__throw_length_error(); 2010 pointer __p; 2011 if (__n < __min_cap) 2012 { 2013 __set_short_size(__n); 2014 __p = __get_short_pointer(); 2015 } 2016 else 2017 { 2018 size_type __cap = __recommend(__n); 2019 __p = __alloc_traits::allocate(__alloc(), __cap+1); 2020 __set_long_pointer(__p); 2021 __set_long_cap(__cap+1); 2022 __set_long_size(__n); 2023 } 2024 traits_type::assign(_VSTD::__to_address(__p), __n, __c); 2025 traits_type::assign(__p[__n], value_type()); 2026} 2027 2028template <class _CharT, class _Traits, class _Allocator> 2029inline 2030basic_string<_CharT, _Traits, _Allocator>::basic_string(size_type __n, _CharT __c) 2031 : __r_(__default_init_tag(), __default_init_tag()) 2032{ 2033 __init(__n, __c); 2034#if _LIBCPP_DEBUG_LEVEL == 2 2035 __get_db()->__insert_c(this); 2036#endif 2037} 2038 2039template <class _CharT, class _Traits, class _Allocator> 2040template <class> 2041basic_string<_CharT, _Traits, _Allocator>::basic_string(size_type __n, _CharT __c, const _Allocator& __a) 2042 : __r_(__default_init_tag(), __a) 2043{ 2044 __init(__n, __c); 2045#if _LIBCPP_DEBUG_LEVEL == 2 2046 __get_db()->__insert_c(this); 2047#endif 2048} 2049 2050template <class _CharT, class _Traits, class _Allocator> 2051basic_string<_CharT, _Traits, _Allocator>::basic_string(const basic_string& __str, 2052 size_type __pos, size_type __n, 2053 const _Allocator& __a) 2054 : __r_(__default_init_tag(), __a) 2055{ 2056 size_type __str_sz = __str.size(); 2057 if (__pos > __str_sz) 2058 this->__throw_out_of_range(); 2059 __init(__str.data() + __pos, _VSTD::min(__n, __str_sz - __pos)); 2060#if _LIBCPP_DEBUG_LEVEL == 2 2061 __get_db()->__insert_c(this); 2062#endif 2063} 2064 2065template <class _CharT, class _Traits, class _Allocator> 2066inline 2067basic_string<_CharT, _Traits, _Allocator>::basic_string(const basic_string& __str, size_type __pos, 2068 const _Allocator& __a) 2069 : __r_(__default_init_tag(), __a) 2070{ 2071 size_type __str_sz = __str.size(); 2072 if (__pos > __str_sz) 2073 this->__throw_out_of_range(); 2074 __init(__str.data() + __pos, __str_sz - __pos); 2075#if _LIBCPP_DEBUG_LEVEL == 2 2076 __get_db()->__insert_c(this); 2077#endif 2078} 2079 2080template <class _CharT, class _Traits, class _Allocator> 2081template <class _Tp, class> 2082basic_string<_CharT, _Traits, _Allocator>::basic_string( 2083 const _Tp& __t, size_type __pos, size_type __n, const allocator_type& __a) 2084 : __r_(__default_init_tag(), __a) 2085{ 2086 __self_view __sv0 = __t; 2087 __self_view __sv = __sv0.substr(__pos, __n); 2088 __init(__sv.data(), __sv.size()); 2089#if _LIBCPP_DEBUG_LEVEL == 2 2090 __get_db()->__insert_c(this); 2091#endif 2092} 2093 2094template <class _CharT, class _Traits, class _Allocator> 2095template <class _Tp, class> 2096basic_string<_CharT, _Traits, _Allocator>::basic_string(const _Tp & __t) 2097 : __r_(__default_init_tag(), __default_init_tag()) 2098{ 2099 __self_view __sv = __t; 2100 __init(__sv.data(), __sv.size()); 2101#if _LIBCPP_DEBUG_LEVEL == 2 2102 __get_db()->__insert_c(this); 2103#endif 2104} 2105 2106template <class _CharT, class _Traits, class _Allocator> 2107template <class _Tp, class> 2108basic_string<_CharT, _Traits, _Allocator>::basic_string(const _Tp & __t, const _Allocator& __a) 2109 : __r_(__default_init_tag(), __a) 2110{ 2111 __self_view __sv = __t; 2112 __init(__sv.data(), __sv.size()); 2113#if _LIBCPP_DEBUG_LEVEL == 2 2114 __get_db()->__insert_c(this); 2115#endif 2116} 2117 2118template <class _CharT, class _Traits, class _Allocator> 2119template <class _InputIterator> 2120_EnableIf 2121< 2122 __is_exactly_cpp17_input_iterator<_InputIterator>::value 2123> 2124basic_string<_CharT, _Traits, _Allocator>::__init(_InputIterator __first, _InputIterator __last) 2125{ 2126 __zero(); 2127#ifndef _LIBCPP_NO_EXCEPTIONS 2128 try 2129 { 2130#endif // _LIBCPP_NO_EXCEPTIONS 2131 for (; __first != __last; ++__first) 2132 push_back(*__first); 2133#ifndef _LIBCPP_NO_EXCEPTIONS 2134 } 2135 catch (...) 2136 { 2137 if (__is_long()) 2138 __alloc_traits::deallocate(__alloc(), __get_long_pointer(), __get_long_cap()); 2139 throw; 2140 } 2141#endif // _LIBCPP_NO_EXCEPTIONS 2142} 2143 2144template <class _CharT, class _Traits, class _Allocator> 2145template <class _ForwardIterator> 2146_EnableIf 2147< 2148 __is_cpp17_forward_iterator<_ForwardIterator>::value 2149> 2150basic_string<_CharT, _Traits, _Allocator>::__init(_ForwardIterator __first, _ForwardIterator __last) 2151{ 2152 size_type __sz = static_cast<size_type>(_VSTD::distance(__first, __last)); 2153 if (__sz > max_size()) 2154 this->__throw_length_error(); 2155 pointer __p; 2156 if (__sz < __min_cap) 2157 { 2158 __set_short_size(__sz); 2159 __p = __get_short_pointer(); 2160 } 2161 else 2162 { 2163 size_type __cap = __recommend(__sz); 2164 __p = __alloc_traits::allocate(__alloc(), __cap+1); 2165 __set_long_pointer(__p); 2166 __set_long_cap(__cap+1); 2167 __set_long_size(__sz); 2168 } 2169 2170#ifndef _LIBCPP_NO_EXCEPTIONS 2171 try 2172 { 2173#endif // _LIBCPP_NO_EXCEPTIONS 2174 for (; __first != __last; ++__first, (void) ++__p) 2175 traits_type::assign(*__p, *__first); 2176 traits_type::assign(*__p, value_type()); 2177#ifndef _LIBCPP_NO_EXCEPTIONS 2178 } 2179 catch (...) 2180 { 2181 if (__is_long()) 2182 __alloc_traits::deallocate(__alloc(), __get_long_pointer(), __get_long_cap()); 2183 throw; 2184 } 2185#endif // _LIBCPP_NO_EXCEPTIONS 2186} 2187 2188template <class _CharT, class _Traits, class _Allocator> 2189template<class _InputIterator, class> 2190inline 2191basic_string<_CharT, _Traits, _Allocator>::basic_string(_InputIterator __first, _InputIterator __last) 2192 : __r_(__default_init_tag(), __default_init_tag()) 2193{ 2194 __init(__first, __last); 2195#if _LIBCPP_DEBUG_LEVEL == 2 2196 __get_db()->__insert_c(this); 2197#endif 2198} 2199 2200template <class _CharT, class _Traits, class _Allocator> 2201template<class _InputIterator, class> 2202inline 2203basic_string<_CharT, _Traits, _Allocator>::basic_string(_InputIterator __first, _InputIterator __last, 2204 const allocator_type& __a) 2205 : __r_(__default_init_tag(), __a) 2206{ 2207 __init(__first, __last); 2208#if _LIBCPP_DEBUG_LEVEL == 2 2209 __get_db()->__insert_c(this); 2210#endif 2211} 2212 2213#ifndef _LIBCPP_CXX03_LANG 2214 2215template <class _CharT, class _Traits, class _Allocator> 2216inline 2217basic_string<_CharT, _Traits, _Allocator>::basic_string( 2218 initializer_list<_CharT> __il) 2219 : __r_(__default_init_tag(), __default_init_tag()) 2220{ 2221 __init(__il.begin(), __il.end()); 2222#if _LIBCPP_DEBUG_LEVEL == 2 2223 __get_db()->__insert_c(this); 2224#endif 2225} 2226 2227template <class _CharT, class _Traits, class _Allocator> 2228inline 2229 2230basic_string<_CharT, _Traits, _Allocator>::basic_string( 2231 initializer_list<_CharT> __il, const _Allocator& __a) 2232 : __r_(__default_init_tag(), __a) 2233{ 2234 __init(__il.begin(), __il.end()); 2235#if _LIBCPP_DEBUG_LEVEL == 2 2236 __get_db()->__insert_c(this); 2237#endif 2238} 2239 2240#endif // _LIBCPP_CXX03_LANG 2241 2242template <class _CharT, class _Traits, class _Allocator> 2243basic_string<_CharT, _Traits, _Allocator>::~basic_string() 2244{ 2245#if _LIBCPP_DEBUG_LEVEL == 2 2246 __get_db()->__erase_c(this); 2247#endif 2248 if (__is_long()) 2249 __alloc_traits::deallocate(__alloc(), __get_long_pointer(), __get_long_cap()); 2250} 2251 2252template <class _CharT, class _Traits, class _Allocator> 2253void 2254basic_string<_CharT, _Traits, _Allocator>::__grow_by_and_replace 2255 (size_type __old_cap, size_type __delta_cap, size_type __old_sz, 2256 size_type __n_copy, size_type __n_del, size_type __n_add, const value_type* __p_new_stuff) 2257{ 2258 size_type __ms = max_size(); 2259 if (__delta_cap > __ms - __old_cap - 1) 2260 this->__throw_length_error(); 2261 pointer __old_p = __get_pointer(); 2262 size_type __cap = __old_cap < __ms / 2 - __alignment ? 2263 __recommend(_VSTD::max(__old_cap + __delta_cap, 2 * __old_cap)) : 2264 __ms - 1; 2265 pointer __p = __alloc_traits::allocate(__alloc(), __cap+1); 2266 __invalidate_all_iterators(); 2267 if (__n_copy != 0) 2268 traits_type::copy(_VSTD::__to_address(__p), 2269 _VSTD::__to_address(__old_p), __n_copy); 2270 if (__n_add != 0) 2271 traits_type::copy(_VSTD::__to_address(__p) + __n_copy, __p_new_stuff, __n_add); 2272 size_type __sec_cp_sz = __old_sz - __n_del - __n_copy; 2273 if (__sec_cp_sz != 0) 2274 traits_type::copy(_VSTD::__to_address(__p) + __n_copy + __n_add, 2275 _VSTD::__to_address(__old_p) + __n_copy + __n_del, __sec_cp_sz); 2276 if (__old_cap+1 != __min_cap) 2277 __alloc_traits::deallocate(__alloc(), __old_p, __old_cap+1); 2278 __set_long_pointer(__p); 2279 __set_long_cap(__cap+1); 2280 __old_sz = __n_copy + __n_add + __sec_cp_sz; 2281 __set_long_size(__old_sz); 2282 traits_type::assign(__p[__old_sz], value_type()); 2283} 2284 2285template <class _CharT, class _Traits, class _Allocator> 2286void 2287basic_string<_CharT, _Traits, _Allocator>::__grow_by(size_type __old_cap, size_type __delta_cap, size_type __old_sz, 2288 size_type __n_copy, size_type __n_del, size_type __n_add) 2289{ 2290 size_type __ms = max_size(); 2291 if (__delta_cap > __ms - __old_cap) 2292 this->__throw_length_error(); 2293 pointer __old_p = __get_pointer(); 2294 size_type __cap = __old_cap < __ms / 2 - __alignment ? 2295 __recommend(_VSTD::max(__old_cap + __delta_cap, 2 * __old_cap)) : 2296 __ms - 1; 2297 pointer __p = __alloc_traits::allocate(__alloc(), __cap+1); 2298 __invalidate_all_iterators(); 2299 if (__n_copy != 0) 2300 traits_type::copy(_VSTD::__to_address(__p), 2301 _VSTD::__to_address(__old_p), __n_copy); 2302 size_type __sec_cp_sz = __old_sz - __n_del - __n_copy; 2303 if (__sec_cp_sz != 0) 2304 traits_type::copy(_VSTD::__to_address(__p) + __n_copy + __n_add, 2305 _VSTD::__to_address(__old_p) + __n_copy + __n_del, 2306 __sec_cp_sz); 2307 if (__old_cap+1 != __min_cap) 2308 __alloc_traits::deallocate(__alloc(), __old_p, __old_cap+1); 2309 __set_long_pointer(__p); 2310 __set_long_cap(__cap+1); 2311} 2312 2313// assign 2314 2315template <class _CharT, class _Traits, class _Allocator> 2316template <bool __is_short> 2317basic_string<_CharT, _Traits, _Allocator>& 2318basic_string<_CharT, _Traits, _Allocator>::__assign_no_alias( 2319 const value_type* __s, size_type __n) { 2320 size_type __cap = __is_short ? __min_cap : __get_long_cap(); 2321 if (__n < __cap) { 2322 pointer __p = __is_short ? __get_short_pointer() : __get_long_pointer(); 2323 __is_short ? __set_short_size(__n) : __set_long_size(__n); 2324 traits_type::copy(_VSTD::__to_address(__p), __s, __n); 2325 traits_type::assign(__p[__n], value_type()); 2326 __invalidate_iterators_past(__n); 2327 } else { 2328 size_type __sz = __is_short ? __get_short_size() : __get_long_size(); 2329 __grow_by_and_replace(__cap - 1, __n - __cap + 1, __sz, 0, __sz, __n, __s); 2330 } 2331 return *this; 2332} 2333 2334template <class _CharT, class _Traits, class _Allocator> 2335basic_string<_CharT, _Traits, _Allocator>& 2336basic_string<_CharT, _Traits, _Allocator>::__assign_external( 2337 const value_type* __s, size_type __n) { 2338 size_type __cap = capacity(); 2339 if (__cap >= __n) { 2340 value_type* __p = _VSTD::__to_address(__get_pointer()); 2341 traits_type::move(__p, __s, __n); 2342 traits_type::assign(__p[__n], value_type()); 2343 __set_size(__n); 2344 __invalidate_iterators_past(__n); 2345 } else { 2346 size_type __sz = size(); 2347 __grow_by_and_replace(__cap, __n - __cap, __sz, 0, __sz, __n, __s); 2348 } 2349 return *this; 2350} 2351 2352template <class _CharT, class _Traits, class _Allocator> 2353basic_string<_CharT, _Traits, _Allocator>& 2354basic_string<_CharT, _Traits, _Allocator>::assign(const value_type* __s, size_type __n) 2355{ 2356 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::assign received nullptr"); 2357 return (_LIBCPP_BUILTIN_CONSTANT_P(__n) && __n < __min_cap) 2358 ? __assign_short(__s, __n) 2359 : __assign_external(__s, __n); 2360} 2361 2362template <class _CharT, class _Traits, class _Allocator> 2363basic_string<_CharT, _Traits, _Allocator>& 2364basic_string<_CharT, _Traits, _Allocator>::assign(size_type __n, value_type __c) 2365{ 2366 size_type __cap = capacity(); 2367 if (__cap < __n) 2368 { 2369 size_type __sz = size(); 2370 __grow_by(__cap, __n - __cap, __sz, 0, __sz); 2371 } 2372 value_type* __p = _VSTD::__to_address(__get_pointer()); 2373 traits_type::assign(__p, __n, __c); 2374 traits_type::assign(__p[__n], value_type()); 2375 __set_size(__n); 2376 __invalidate_iterators_past(__n); 2377 return *this; 2378} 2379 2380template <class _CharT, class _Traits, class _Allocator> 2381basic_string<_CharT, _Traits, _Allocator>& 2382basic_string<_CharT, _Traits, _Allocator>::operator=(value_type __c) 2383{ 2384 pointer __p; 2385 if (__is_long()) 2386 { 2387 __p = __get_long_pointer(); 2388 __set_long_size(1); 2389 } 2390 else 2391 { 2392 __p = __get_short_pointer(); 2393 __set_short_size(1); 2394 } 2395 traits_type::assign(*__p, __c); 2396 traits_type::assign(*++__p, value_type()); 2397 __invalidate_iterators_past(1); 2398 return *this; 2399} 2400 2401template <class _CharT, class _Traits, class _Allocator> 2402basic_string<_CharT, _Traits, _Allocator>& 2403basic_string<_CharT, _Traits, _Allocator>::operator=(const basic_string& __str) 2404{ 2405 if (this != &__str) { 2406 __copy_assign_alloc(__str); 2407 if (!__is_long()) { 2408 if (!__str.__is_long()) { 2409 __r_.first().__r = __str.__r_.first().__r; 2410 } else { 2411 return __assign_no_alias<true>(__str.data(), __str.size()); 2412 } 2413 } else { 2414 return __assign_no_alias<false>(__str.data(), __str.size()); 2415 } 2416 } 2417 return *this; 2418} 2419 2420#ifndef _LIBCPP_CXX03_LANG 2421 2422template <class _CharT, class _Traits, class _Allocator> 2423inline 2424void 2425basic_string<_CharT, _Traits, _Allocator>::__move_assign(basic_string& __str, false_type) 2426 _NOEXCEPT_(__alloc_traits::is_always_equal::value) 2427{ 2428 if (__alloc() != __str.__alloc()) 2429 assign(__str); 2430 else 2431 __move_assign(__str, true_type()); 2432} 2433 2434template <class _CharT, class _Traits, class _Allocator> 2435inline 2436void 2437basic_string<_CharT, _Traits, _Allocator>::__move_assign(basic_string& __str, true_type) 2438#if _LIBCPP_STD_VER > 14 2439 _NOEXCEPT 2440#else 2441 _NOEXCEPT_(is_nothrow_move_assignable<allocator_type>::value) 2442#endif 2443{ 2444 if (__is_long()) { 2445 __alloc_traits::deallocate(__alloc(), __get_long_pointer(), 2446 __get_long_cap()); 2447#if _LIBCPP_STD_VER <= 14 2448 if (!is_nothrow_move_assignable<allocator_type>::value) { 2449 __set_short_size(0); 2450 traits_type::assign(__get_short_pointer()[0], value_type()); 2451 } 2452#endif 2453 } 2454 __move_assign_alloc(__str); 2455 __r_.first() = __str.__r_.first(); 2456 __str.__set_short_size(0); 2457 traits_type::assign(__str.__get_short_pointer()[0], value_type()); 2458} 2459 2460template <class _CharT, class _Traits, class _Allocator> 2461inline 2462basic_string<_CharT, _Traits, _Allocator>& 2463basic_string<_CharT, _Traits, _Allocator>::operator=(basic_string&& __str) 2464 _NOEXCEPT_((__noexcept_move_assign_container<_Allocator, __alloc_traits>::value)) 2465{ 2466 __move_assign(__str, integral_constant<bool, 2467 __alloc_traits::propagate_on_container_move_assignment::value>()); 2468 return *this; 2469} 2470 2471#endif 2472 2473template <class _CharT, class _Traits, class _Allocator> 2474template<class _InputIterator> 2475_EnableIf 2476< 2477 __is_exactly_cpp17_input_iterator<_InputIterator>::value, 2478 basic_string<_CharT, _Traits, _Allocator>& 2479> 2480basic_string<_CharT, _Traits, _Allocator>::assign(_InputIterator __first, _InputIterator __last) 2481{ 2482 const basic_string __temp(__first, __last, __alloc()); 2483 assign(__temp.data(), __temp.size()); 2484 return *this; 2485} 2486 2487template <class _CharT, class _Traits, class _Allocator> 2488template<class _ForwardIterator> 2489_EnableIf 2490< 2491 __is_cpp17_forward_iterator<_ForwardIterator>::value, 2492 basic_string<_CharT, _Traits, _Allocator>& 2493> 2494basic_string<_CharT, _Traits, _Allocator>::assign(_ForwardIterator __first, _ForwardIterator __last) 2495{ 2496 size_type __cap = capacity(); 2497 size_type __n = __string_is_trivial_iterator<_ForwardIterator>::value ? 2498 static_cast<size_type>(_VSTD::distance(__first, __last)) : 0; 2499 2500 if (__string_is_trivial_iterator<_ForwardIterator>::value && 2501 (__cap >= __n || !__addr_in_range(*__first))) 2502 { 2503 if (__cap < __n) 2504 { 2505 size_type __sz = size(); 2506 __grow_by(__cap, __n - __cap, __sz, 0, __sz); 2507 } 2508 pointer __p = __get_pointer(); 2509 for (; __first != __last; ++__first, ++__p) 2510 traits_type::assign(*__p, *__first); 2511 traits_type::assign(*__p, value_type()); 2512 __set_size(__n); 2513 __invalidate_iterators_past(__n); 2514 } 2515 else 2516 { 2517 const basic_string __temp(__first, __last, __alloc()); 2518 assign(__temp.data(), __temp.size()); 2519 } 2520 return *this; 2521} 2522 2523template <class _CharT, class _Traits, class _Allocator> 2524basic_string<_CharT, _Traits, _Allocator>& 2525basic_string<_CharT, _Traits, _Allocator>::assign(const basic_string& __str, size_type __pos, size_type __n) 2526{ 2527 size_type __sz = __str.size(); 2528 if (__pos > __sz) 2529 this->__throw_out_of_range(); 2530 return assign(__str.data() + __pos, _VSTD::min(__n, __sz - __pos)); 2531} 2532 2533template <class _CharT, class _Traits, class _Allocator> 2534template <class _Tp> 2535_EnableIf 2536< 2537 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value 2538 && !__is_same_uncvref<_Tp, basic_string<_CharT, _Traits, _Allocator> >::value, 2539 basic_string<_CharT, _Traits, _Allocator>& 2540> 2541basic_string<_CharT, _Traits, _Allocator>::assign(const _Tp & __t, size_type __pos, size_type __n) 2542{ 2543 __self_view __sv = __t; 2544 size_type __sz = __sv.size(); 2545 if (__pos > __sz) 2546 this->__throw_out_of_range(); 2547 return assign(__sv.data() + __pos, _VSTD::min(__n, __sz - __pos)); 2548} 2549 2550 2551template <class _CharT, class _Traits, class _Allocator> 2552basic_string<_CharT, _Traits, _Allocator>& 2553basic_string<_CharT, _Traits, _Allocator>::__assign_external(const value_type* __s) { 2554 return __assign_external(__s, traits_type::length(__s)); 2555} 2556 2557template <class _CharT, class _Traits, class _Allocator> 2558basic_string<_CharT, _Traits, _Allocator>& 2559basic_string<_CharT, _Traits, _Allocator>::assign(const value_type* __s) 2560{ 2561 _LIBCPP_ASSERT(__s != nullptr, "string::assign received nullptr"); 2562 return _LIBCPP_BUILTIN_CONSTANT_P(*__s) 2563 ? (traits_type::length(__s) < __min_cap 2564 ? __assign_short(__s, traits_type::length(__s)) 2565 : __assign_external(__s, traits_type::length(__s))) 2566 : __assign_external(__s); 2567} 2568// append 2569 2570template <class _CharT, class _Traits, class _Allocator> 2571basic_string<_CharT, _Traits, _Allocator>& 2572basic_string<_CharT, _Traits, _Allocator>::append(const value_type* __s, size_type __n) 2573{ 2574 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::append received nullptr"); 2575 size_type __cap = capacity(); 2576 size_type __sz = size(); 2577 if (__cap - __sz >= __n) 2578 { 2579 if (__n) 2580 { 2581 value_type* __p = _VSTD::__to_address(__get_pointer()); 2582 traits_type::copy(__p + __sz, __s, __n); 2583 __sz += __n; 2584 __set_size(__sz); 2585 traits_type::assign(__p[__sz], value_type()); 2586 } 2587 } 2588 else 2589 __grow_by_and_replace(__cap, __sz + __n - __cap, __sz, __sz, 0, __n, __s); 2590 return *this; 2591} 2592 2593template <class _CharT, class _Traits, class _Allocator> 2594basic_string<_CharT, _Traits, _Allocator>& 2595basic_string<_CharT, _Traits, _Allocator>::append(size_type __n, value_type __c) 2596{ 2597 if (__n) 2598 { 2599 size_type __cap = capacity(); 2600 size_type __sz = size(); 2601 if (__cap - __sz < __n) 2602 __grow_by(__cap, __sz + __n - __cap, __sz, __sz, 0); 2603 pointer __p = __get_pointer(); 2604 traits_type::assign(_VSTD::__to_address(__p) + __sz, __n, __c); 2605 __sz += __n; 2606 __set_size(__sz); 2607 traits_type::assign(__p[__sz], value_type()); 2608 } 2609 return *this; 2610} 2611 2612template <class _CharT, class _Traits, class _Allocator> 2613inline void 2614basic_string<_CharT, _Traits, _Allocator>::__append_default_init(size_type __n) 2615{ 2616 if (__n) 2617 { 2618 size_type __cap = capacity(); 2619 size_type __sz = size(); 2620 if (__cap - __sz < __n) 2621 __grow_by(__cap, __sz + __n - __cap, __sz, __sz, 0); 2622 pointer __p = __get_pointer(); 2623 __sz += __n; 2624 __set_size(__sz); 2625 traits_type::assign(__p[__sz], value_type()); 2626 } 2627} 2628 2629template <class _CharT, class _Traits, class _Allocator> 2630void 2631basic_string<_CharT, _Traits, _Allocator>::push_back(value_type __c) 2632{ 2633 bool __is_short = !__is_long(); 2634 size_type __cap; 2635 size_type __sz; 2636 if (__is_short) 2637 { 2638 __cap = __min_cap - 1; 2639 __sz = __get_short_size(); 2640 } 2641 else 2642 { 2643 __cap = __get_long_cap() - 1; 2644 __sz = __get_long_size(); 2645 } 2646 if (__sz == __cap) 2647 { 2648 __grow_by(__cap, 1, __sz, __sz, 0); 2649 __is_short = !__is_long(); 2650 } 2651 pointer __p; 2652 if (__is_short) 2653 { 2654 __p = __get_short_pointer() + __sz; 2655 __set_short_size(__sz+1); 2656 } 2657 else 2658 { 2659 __p = __get_long_pointer() + __sz; 2660 __set_long_size(__sz+1); 2661 } 2662 traits_type::assign(*__p, __c); 2663 traits_type::assign(*++__p, value_type()); 2664} 2665 2666template <class _CharT, class _Traits, class _Allocator> 2667template<class _ForwardIterator> 2668_EnableIf 2669< 2670 __is_cpp17_forward_iterator<_ForwardIterator>::value, 2671 basic_string<_CharT, _Traits, _Allocator>& 2672> 2673basic_string<_CharT, _Traits, _Allocator>::append( 2674 _ForwardIterator __first, _ForwardIterator __last) 2675{ 2676 size_type __sz = size(); 2677 size_type __cap = capacity(); 2678 size_type __n = static_cast<size_type>(_VSTD::distance(__first, __last)); 2679 if (__n) 2680 { 2681 if (__string_is_trivial_iterator<_ForwardIterator>::value && 2682 !__addr_in_range(*__first)) 2683 { 2684 if (__cap - __sz < __n) 2685 __grow_by(__cap, __sz + __n - __cap, __sz, __sz, 0); 2686 pointer __p = __get_pointer() + __sz; 2687 for (; __first != __last; ++__p, ++__first) 2688 traits_type::assign(*__p, *__first); 2689 traits_type::assign(*__p, value_type()); 2690 __set_size(__sz + __n); 2691 } 2692 else 2693 { 2694 const basic_string __temp(__first, __last, __alloc()); 2695 append(__temp.data(), __temp.size()); 2696 } 2697 } 2698 return *this; 2699} 2700 2701template <class _CharT, class _Traits, class _Allocator> 2702inline 2703basic_string<_CharT, _Traits, _Allocator>& 2704basic_string<_CharT, _Traits, _Allocator>::append(const basic_string& __str) 2705{ 2706 return append(__str.data(), __str.size()); 2707} 2708 2709template <class _CharT, class _Traits, class _Allocator> 2710basic_string<_CharT, _Traits, _Allocator>& 2711basic_string<_CharT, _Traits, _Allocator>::append(const basic_string& __str, size_type __pos, size_type __n) 2712{ 2713 size_type __sz = __str.size(); 2714 if (__pos > __sz) 2715 this->__throw_out_of_range(); 2716 return append(__str.data() + __pos, _VSTD::min(__n, __sz - __pos)); 2717} 2718 2719template <class _CharT, class _Traits, class _Allocator> 2720template <class _Tp> 2721 _EnableIf 2722 < 2723 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value && !__is_same_uncvref<_Tp, basic_string<_CharT, _Traits, _Allocator> >::value, 2724 basic_string<_CharT, _Traits, _Allocator>& 2725 > 2726basic_string<_CharT, _Traits, _Allocator>::append(const _Tp & __t, size_type __pos, size_type __n) 2727{ 2728 __self_view __sv = __t; 2729 size_type __sz = __sv.size(); 2730 if (__pos > __sz) 2731 this->__throw_out_of_range(); 2732 return append(__sv.data() + __pos, _VSTD::min(__n, __sz - __pos)); 2733} 2734 2735template <class _CharT, class _Traits, class _Allocator> 2736basic_string<_CharT, _Traits, _Allocator>& 2737basic_string<_CharT, _Traits, _Allocator>::append(const value_type* __s) 2738{ 2739 _LIBCPP_ASSERT(__s != nullptr, "string::append received nullptr"); 2740 return append(__s, traits_type::length(__s)); 2741} 2742 2743// insert 2744 2745template <class _CharT, class _Traits, class _Allocator> 2746basic_string<_CharT, _Traits, _Allocator>& 2747basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos, const value_type* __s, size_type __n) 2748{ 2749 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::insert received nullptr"); 2750 size_type __sz = size(); 2751 if (__pos > __sz) 2752 this->__throw_out_of_range(); 2753 size_type __cap = capacity(); 2754 if (__cap - __sz >= __n) 2755 { 2756 if (__n) 2757 { 2758 value_type* __p = _VSTD::__to_address(__get_pointer()); 2759 size_type __n_move = __sz - __pos; 2760 if (__n_move != 0) 2761 { 2762 if (__p + __pos <= __s && __s < __p + __sz) 2763 __s += __n; 2764 traits_type::move(__p + __pos + __n, __p + __pos, __n_move); 2765 } 2766 traits_type::move(__p + __pos, __s, __n); 2767 __sz += __n; 2768 __set_size(__sz); 2769 traits_type::assign(__p[__sz], value_type()); 2770 } 2771 } 2772 else 2773 __grow_by_and_replace(__cap, __sz + __n - __cap, __sz, __pos, 0, __n, __s); 2774 return *this; 2775} 2776 2777template <class _CharT, class _Traits, class _Allocator> 2778basic_string<_CharT, _Traits, _Allocator>& 2779basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos, size_type __n, value_type __c) 2780{ 2781 size_type __sz = size(); 2782 if (__pos > __sz) 2783 this->__throw_out_of_range(); 2784 if (__n) 2785 { 2786 size_type __cap = capacity(); 2787 value_type* __p; 2788 if (__cap - __sz >= __n) 2789 { 2790 __p = _VSTD::__to_address(__get_pointer()); 2791 size_type __n_move = __sz - __pos; 2792 if (__n_move != 0) 2793 traits_type::move(__p + __pos + __n, __p + __pos, __n_move); 2794 } 2795 else 2796 { 2797 __grow_by(__cap, __sz + __n - __cap, __sz, __pos, 0, __n); 2798 __p = _VSTD::__to_address(__get_long_pointer()); 2799 } 2800 traits_type::assign(__p + __pos, __n, __c); 2801 __sz += __n; 2802 __set_size(__sz); 2803 traits_type::assign(__p[__sz], value_type()); 2804 } 2805 return *this; 2806} 2807 2808template <class _CharT, class _Traits, class _Allocator> 2809template<class _InputIterator> 2810_EnableIf 2811< 2812 __is_exactly_cpp17_input_iterator<_InputIterator>::value, 2813 typename basic_string<_CharT, _Traits, _Allocator>::iterator 2814> 2815basic_string<_CharT, _Traits, _Allocator>::insert(const_iterator __pos, _InputIterator __first, _InputIterator __last) 2816{ 2817#if _LIBCPP_DEBUG_LEVEL == 2 2818 _LIBCPP_ASSERT(__get_const_db()->__find_c_from_i(&__pos) == this, 2819 "string::insert(iterator, range) called with an iterator not" 2820 " referring to this string"); 2821#endif 2822 const basic_string __temp(__first, __last, __alloc()); 2823 return insert(__pos, __temp.data(), __temp.data() + __temp.size()); 2824} 2825 2826template <class _CharT, class _Traits, class _Allocator> 2827template<class _ForwardIterator> 2828_EnableIf 2829< 2830 __is_cpp17_forward_iterator<_ForwardIterator>::value, 2831 typename basic_string<_CharT, _Traits, _Allocator>::iterator 2832> 2833basic_string<_CharT, _Traits, _Allocator>::insert(const_iterator __pos, _ForwardIterator __first, _ForwardIterator __last) 2834{ 2835#if _LIBCPP_DEBUG_LEVEL == 2 2836 _LIBCPP_ASSERT(__get_const_db()->__find_c_from_i(&__pos) == this, 2837 "string::insert(iterator, range) called with an iterator not" 2838 " referring to this string"); 2839#endif 2840 size_type __ip = static_cast<size_type>(__pos - begin()); 2841 size_type __n = static_cast<size_type>(_VSTD::distance(__first, __last)); 2842 if (__n) 2843 { 2844 if (__string_is_trivial_iterator<_ForwardIterator>::value && 2845 !__addr_in_range(*__first)) 2846 { 2847 size_type __sz = size(); 2848 size_type __cap = capacity(); 2849 value_type* __p; 2850 if (__cap - __sz >= __n) 2851 { 2852 __p = _VSTD::__to_address(__get_pointer()); 2853 size_type __n_move = __sz - __ip; 2854 if (__n_move != 0) 2855 traits_type::move(__p + __ip + __n, __p + __ip, __n_move); 2856 } 2857 else 2858 { 2859 __grow_by(__cap, __sz + __n - __cap, __sz, __ip, 0, __n); 2860 __p = _VSTD::__to_address(__get_long_pointer()); 2861 } 2862 __sz += __n; 2863 __set_size(__sz); 2864 traits_type::assign(__p[__sz], value_type()); 2865 for (__p += __ip; __first != __last; ++__p, ++__first) 2866 traits_type::assign(*__p, *__first); 2867 } 2868 else 2869 { 2870 const basic_string __temp(__first, __last, __alloc()); 2871 return insert(__pos, __temp.data(), __temp.data() + __temp.size()); 2872 } 2873 } 2874 return begin() + __ip; 2875} 2876 2877template <class _CharT, class _Traits, class _Allocator> 2878inline 2879basic_string<_CharT, _Traits, _Allocator>& 2880basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos1, const basic_string& __str) 2881{ 2882 return insert(__pos1, __str.data(), __str.size()); 2883} 2884 2885template <class _CharT, class _Traits, class _Allocator> 2886basic_string<_CharT, _Traits, _Allocator>& 2887basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos1, const basic_string& __str, 2888 size_type __pos2, size_type __n) 2889{ 2890 size_type __str_sz = __str.size(); 2891 if (__pos2 > __str_sz) 2892 this->__throw_out_of_range(); 2893 return insert(__pos1, __str.data() + __pos2, _VSTD::min(__n, __str_sz - __pos2)); 2894} 2895 2896template <class _CharT, class _Traits, class _Allocator> 2897template <class _Tp> 2898_EnableIf 2899< 2900 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value && !__is_same_uncvref<_Tp, basic_string<_CharT, _Traits, _Allocator> >::value, 2901 basic_string<_CharT, _Traits, _Allocator>& 2902> 2903basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos1, const _Tp& __t, 2904 size_type __pos2, size_type __n) 2905{ 2906 __self_view __sv = __t; 2907 size_type __str_sz = __sv.size(); 2908 if (__pos2 > __str_sz) 2909 this->__throw_out_of_range(); 2910 return insert(__pos1, __sv.data() + __pos2, _VSTD::min(__n, __str_sz - __pos2)); 2911} 2912 2913template <class _CharT, class _Traits, class _Allocator> 2914basic_string<_CharT, _Traits, _Allocator>& 2915basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos, const value_type* __s) 2916{ 2917 _LIBCPP_ASSERT(__s != nullptr, "string::insert received nullptr"); 2918 return insert(__pos, __s, traits_type::length(__s)); 2919} 2920 2921template <class _CharT, class _Traits, class _Allocator> 2922typename basic_string<_CharT, _Traits, _Allocator>::iterator 2923basic_string<_CharT, _Traits, _Allocator>::insert(const_iterator __pos, value_type __c) 2924{ 2925 size_type __ip = static_cast<size_type>(__pos - begin()); 2926 size_type __sz = size(); 2927 size_type __cap = capacity(); 2928 value_type* __p; 2929 if (__cap == __sz) 2930 { 2931 __grow_by(__cap, 1, __sz, __ip, 0, 1); 2932 __p = _VSTD::__to_address(__get_long_pointer()); 2933 } 2934 else 2935 { 2936 __p = _VSTD::__to_address(__get_pointer()); 2937 size_type __n_move = __sz - __ip; 2938 if (__n_move != 0) 2939 traits_type::move(__p + __ip + 1, __p + __ip, __n_move); 2940 } 2941 traits_type::assign(__p[__ip], __c); 2942 traits_type::assign(__p[++__sz], value_type()); 2943 __set_size(__sz); 2944 return begin() + static_cast<difference_type>(__ip); 2945} 2946 2947template <class _CharT, class _Traits, class _Allocator> 2948inline 2949typename basic_string<_CharT, _Traits, _Allocator>::iterator 2950basic_string<_CharT, _Traits, _Allocator>::insert(const_iterator __pos, size_type __n, value_type __c) 2951{ 2952#if _LIBCPP_DEBUG_LEVEL == 2 2953 _LIBCPP_ASSERT(__get_const_db()->__find_c_from_i(&__pos) == this, 2954 "string::insert(iterator, n, value) called with an iterator not" 2955 " referring to this string"); 2956#endif 2957 difference_type __p = __pos - begin(); 2958 insert(static_cast<size_type>(__p), __n, __c); 2959 return begin() + __p; 2960} 2961 2962// replace 2963 2964template <class _CharT, class _Traits, class _Allocator> 2965basic_string<_CharT, _Traits, _Allocator>& 2966basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos, size_type __n1, const value_type* __s, size_type __n2) 2967 _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK 2968{ 2969 _LIBCPP_ASSERT(__n2 == 0 || __s != nullptr, "string::replace received nullptr"); 2970 size_type __sz = size(); 2971 if (__pos > __sz) 2972 this->__throw_out_of_range(); 2973 __n1 = _VSTD::min(__n1, __sz - __pos); 2974 size_type __cap = capacity(); 2975 if (__cap - __sz + __n1 >= __n2) 2976 { 2977 value_type* __p = _VSTD::__to_address(__get_pointer()); 2978 if (__n1 != __n2) 2979 { 2980 size_type __n_move = __sz - __pos - __n1; 2981 if (__n_move != 0) 2982 { 2983 if (__n1 > __n2) 2984 { 2985 traits_type::move(__p + __pos, __s, __n2); 2986 traits_type::move(__p + __pos + __n2, __p + __pos + __n1, __n_move); 2987 goto __finish; 2988 } 2989 if (__p + __pos < __s && __s < __p + __sz) 2990 { 2991 if (__p + __pos + __n1 <= __s) 2992 __s += __n2 - __n1; 2993 else // __p + __pos < __s < __p + __pos + __n1 2994 { 2995 traits_type::move(__p + __pos, __s, __n1); 2996 __pos += __n1; 2997 __s += __n2; 2998 __n2 -= __n1; 2999 __n1 = 0; 3000 } 3001 } 3002 traits_type::move(__p + __pos + __n2, __p + __pos + __n1, __n_move); 3003 } 3004 } 3005 traits_type::move(__p + __pos, __s, __n2); 3006__finish: 3007// __sz += __n2 - __n1; in this and the below function below can cause unsigned 3008// integer overflow, but this is a safe operation, so we disable the check. 3009 __sz += __n2 - __n1; 3010 __set_size(__sz); 3011 __invalidate_iterators_past(__sz); 3012 traits_type::assign(__p[__sz], value_type()); 3013 } 3014 else 3015 __grow_by_and_replace(__cap, __sz - __n1 + __n2 - __cap, __sz, __pos, __n1, __n2, __s); 3016 return *this; 3017} 3018 3019template <class _CharT, class _Traits, class _Allocator> 3020basic_string<_CharT, _Traits, _Allocator>& 3021basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos, size_type __n1, size_type __n2, value_type __c) 3022 _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK 3023{ 3024 size_type __sz = size(); 3025 if (__pos > __sz) 3026 this->__throw_out_of_range(); 3027 __n1 = _VSTD::min(__n1, __sz - __pos); 3028 size_type __cap = capacity(); 3029 value_type* __p; 3030 if (__cap - __sz + __n1 >= __n2) 3031 { 3032 __p = _VSTD::__to_address(__get_pointer()); 3033 if (__n1 != __n2) 3034 { 3035 size_type __n_move = __sz - __pos - __n1; 3036 if (__n_move != 0) 3037 traits_type::move(__p + __pos + __n2, __p + __pos + __n1, __n_move); 3038 } 3039 } 3040 else 3041 { 3042 __grow_by(__cap, __sz - __n1 + __n2 - __cap, __sz, __pos, __n1, __n2); 3043 __p = _VSTD::__to_address(__get_long_pointer()); 3044 } 3045 traits_type::assign(__p + __pos, __n2, __c); 3046 __sz += __n2 - __n1; 3047 __set_size(__sz); 3048 __invalidate_iterators_past(__sz); 3049 traits_type::assign(__p[__sz], value_type()); 3050 return *this; 3051} 3052 3053template <class _CharT, class _Traits, class _Allocator> 3054template<class _InputIterator> 3055_EnableIf 3056< 3057 __is_cpp17_input_iterator<_InputIterator>::value, 3058 basic_string<_CharT, _Traits, _Allocator>& 3059> 3060basic_string<_CharT, _Traits, _Allocator>::replace(const_iterator __i1, const_iterator __i2, 3061 _InputIterator __j1, _InputIterator __j2) 3062{ 3063 const basic_string __temp(__j1, __j2, __alloc()); 3064 return this->replace(__i1, __i2, __temp); 3065} 3066 3067template <class _CharT, class _Traits, class _Allocator> 3068inline 3069basic_string<_CharT, _Traits, _Allocator>& 3070basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos1, size_type __n1, const basic_string& __str) 3071{ 3072 return replace(__pos1, __n1, __str.data(), __str.size()); 3073} 3074 3075template <class _CharT, class _Traits, class _Allocator> 3076basic_string<_CharT, _Traits, _Allocator>& 3077basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos1, size_type __n1, const basic_string& __str, 3078 size_type __pos2, size_type __n2) 3079{ 3080 size_type __str_sz = __str.size(); 3081 if (__pos2 > __str_sz) 3082 this->__throw_out_of_range(); 3083 return replace(__pos1, __n1, __str.data() + __pos2, _VSTD::min(__n2, __str_sz - __pos2)); 3084} 3085 3086template <class _CharT, class _Traits, class _Allocator> 3087template <class _Tp> 3088_EnableIf 3089< 3090 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value && !__is_same_uncvref<_Tp, basic_string<_CharT, _Traits, _Allocator> >::value, 3091 basic_string<_CharT, _Traits, _Allocator>& 3092> 3093basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos1, size_type __n1, const _Tp& __t, 3094 size_type __pos2, size_type __n2) 3095{ 3096 __self_view __sv = __t; 3097 size_type __str_sz = __sv.size(); 3098 if (__pos2 > __str_sz) 3099 this->__throw_out_of_range(); 3100 return replace(__pos1, __n1, __sv.data() + __pos2, _VSTD::min(__n2, __str_sz - __pos2)); 3101} 3102 3103template <class _CharT, class _Traits, class _Allocator> 3104basic_string<_CharT, _Traits, _Allocator>& 3105basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos, size_type __n1, const value_type* __s) 3106{ 3107 _LIBCPP_ASSERT(__s != nullptr, "string::replace received nullptr"); 3108 return replace(__pos, __n1, __s, traits_type::length(__s)); 3109} 3110 3111template <class _CharT, class _Traits, class _Allocator> 3112inline 3113basic_string<_CharT, _Traits, _Allocator>& 3114basic_string<_CharT, _Traits, _Allocator>::replace(const_iterator __i1, const_iterator __i2, const basic_string& __str) 3115{ 3116 return replace(static_cast<size_type>(__i1 - begin()), static_cast<size_type>(__i2 - __i1), 3117 __str.data(), __str.size()); 3118} 3119 3120template <class _CharT, class _Traits, class _Allocator> 3121inline 3122basic_string<_CharT, _Traits, _Allocator>& 3123basic_string<_CharT, _Traits, _Allocator>::replace(const_iterator __i1, const_iterator __i2, const value_type* __s, size_type __n) 3124{ 3125 return replace(static_cast<size_type>(__i1 - begin()), static_cast<size_type>(__i2 - __i1), __s, __n); 3126} 3127 3128template <class _CharT, class _Traits, class _Allocator> 3129inline 3130basic_string<_CharT, _Traits, _Allocator>& 3131basic_string<_CharT, _Traits, _Allocator>::replace(const_iterator __i1, const_iterator __i2, const value_type* __s) 3132{ 3133 return replace(static_cast<size_type>(__i1 - begin()), static_cast<size_type>(__i2 - __i1), __s); 3134} 3135 3136template <class _CharT, class _Traits, class _Allocator> 3137inline 3138basic_string<_CharT, _Traits, _Allocator>& 3139basic_string<_CharT, _Traits, _Allocator>::replace(const_iterator __i1, const_iterator __i2, size_type __n, value_type __c) 3140{ 3141 return replace(static_cast<size_type>(__i1 - begin()), static_cast<size_type>(__i2 - __i1), __n, __c); 3142} 3143 3144// erase 3145 3146// 'externally instantiated' erase() implementation, called when __n != npos. 3147// Does not check __pos against size() 3148template <class _CharT, class _Traits, class _Allocator> 3149void 3150basic_string<_CharT, _Traits, _Allocator>::__erase_external_with_move( 3151 size_type __pos, size_type __n) 3152{ 3153 if (__n) 3154 { 3155 size_type __sz = size(); 3156 value_type* __p = _VSTD::__to_address(__get_pointer()); 3157 __n = _VSTD::min(__n, __sz - __pos); 3158 size_type __n_move = __sz - __pos - __n; 3159 if (__n_move != 0) 3160 traits_type::move(__p + __pos, __p + __pos + __n, __n_move); 3161 __sz -= __n; 3162 __set_size(__sz); 3163 __invalidate_iterators_past(__sz); 3164 traits_type::assign(__p[__sz], value_type()); 3165 } 3166} 3167 3168template <class _CharT, class _Traits, class _Allocator> 3169basic_string<_CharT, _Traits, _Allocator>& 3170basic_string<_CharT, _Traits, _Allocator>::erase(size_type __pos, 3171 size_type __n) { 3172 if (__pos > size()) this->__throw_out_of_range(); 3173 if (__n == npos) { 3174 __erase_to_end(__pos); 3175 } else { 3176 __erase_external_with_move(__pos, __n); 3177 } 3178 return *this; 3179} 3180 3181template <class _CharT, class _Traits, class _Allocator> 3182inline 3183typename basic_string<_CharT, _Traits, _Allocator>::iterator 3184basic_string<_CharT, _Traits, _Allocator>::erase(const_iterator __pos) 3185{ 3186#if _LIBCPP_DEBUG_LEVEL == 2 3187 _LIBCPP_ASSERT(__get_const_db()->__find_c_from_i(&__pos) == this, 3188 "string::erase(iterator) called with an iterator not" 3189 " referring to this string"); 3190#endif 3191 _LIBCPP_ASSERT(__pos != end(), 3192 "string::erase(iterator) called with a non-dereferenceable iterator"); 3193 iterator __b = begin(); 3194 size_type __r = static_cast<size_type>(__pos - __b); 3195 erase(__r, 1); 3196 return __b + static_cast<difference_type>(__r); 3197} 3198 3199template <class _CharT, class _Traits, class _Allocator> 3200inline 3201typename basic_string<_CharT, _Traits, _Allocator>::iterator 3202basic_string<_CharT, _Traits, _Allocator>::erase(const_iterator __first, const_iterator __last) 3203{ 3204#if _LIBCPP_DEBUG_LEVEL == 2 3205 _LIBCPP_ASSERT(__get_const_db()->__find_c_from_i(&__first) == this, 3206 "string::erase(iterator, iterator) called with an iterator not" 3207 " referring to this string"); 3208#endif 3209 _LIBCPP_ASSERT(__first <= __last, "string::erase(first, last) called with invalid range"); 3210 iterator __b = begin(); 3211 size_type __r = static_cast<size_type>(__first - __b); 3212 erase(__r, static_cast<size_type>(__last - __first)); 3213 return __b + static_cast<difference_type>(__r); 3214} 3215 3216template <class _CharT, class _Traits, class _Allocator> 3217inline 3218void 3219basic_string<_CharT, _Traits, _Allocator>::pop_back() 3220{ 3221 _LIBCPP_ASSERT(!empty(), "string::pop_back(): string is already empty"); 3222 size_type __sz; 3223 if (__is_long()) 3224 { 3225 __sz = __get_long_size() - 1; 3226 __set_long_size(__sz); 3227 traits_type::assign(*(__get_long_pointer() + __sz), value_type()); 3228 } 3229 else 3230 { 3231 __sz = __get_short_size() - 1; 3232 __set_short_size(__sz); 3233 traits_type::assign(*(__get_short_pointer() + __sz), value_type()); 3234 } 3235 __invalidate_iterators_past(__sz); 3236} 3237 3238template <class _CharT, class _Traits, class _Allocator> 3239inline 3240void 3241basic_string<_CharT, _Traits, _Allocator>::clear() _NOEXCEPT 3242{ 3243 __invalidate_all_iterators(); 3244 if (__is_long()) 3245 { 3246 traits_type::assign(*__get_long_pointer(), value_type()); 3247 __set_long_size(0); 3248 } 3249 else 3250 { 3251 traits_type::assign(*__get_short_pointer(), value_type()); 3252 __set_short_size(0); 3253 } 3254} 3255 3256template <class _CharT, class _Traits, class _Allocator> 3257inline 3258void 3259basic_string<_CharT, _Traits, _Allocator>::__erase_to_end(size_type __pos) 3260{ 3261 if (__is_long()) 3262 { 3263 traits_type::assign(*(__get_long_pointer() + __pos), value_type()); 3264 __set_long_size(__pos); 3265 } 3266 else 3267 { 3268 traits_type::assign(*(__get_short_pointer() + __pos), value_type()); 3269 __set_short_size(__pos); 3270 } 3271 __invalidate_iterators_past(__pos); 3272} 3273 3274template <class _CharT, class _Traits, class _Allocator> 3275void 3276basic_string<_CharT, _Traits, _Allocator>::resize(size_type __n, value_type __c) 3277{ 3278 size_type __sz = size(); 3279 if (__n > __sz) 3280 append(__n - __sz, __c); 3281 else 3282 __erase_to_end(__n); 3283} 3284 3285template <class _CharT, class _Traits, class _Allocator> 3286inline void 3287basic_string<_CharT, _Traits, _Allocator>::__resize_default_init(size_type __n) 3288{ 3289 size_type __sz = size(); 3290 if (__n > __sz) { 3291 __append_default_init(__n - __sz); 3292 } else 3293 __erase_to_end(__n); 3294} 3295 3296template <class _CharT, class _Traits, class _Allocator> 3297inline 3298typename basic_string<_CharT, _Traits, _Allocator>::size_type 3299basic_string<_CharT, _Traits, _Allocator>::max_size() const _NOEXCEPT 3300{ 3301 size_type __m = __alloc_traits::max_size(__alloc()); 3302#ifdef _LIBCPP_BIG_ENDIAN 3303 return (__m <= ~__long_mask ? __m : __m/2) - __alignment; 3304#else 3305 return __m - __alignment; 3306#endif 3307} 3308 3309template <class _CharT, class _Traits, class _Allocator> 3310void 3311basic_string<_CharT, _Traits, _Allocator>::reserve(size_type __requested_capacity) 3312{ 3313 if (__requested_capacity > max_size()) 3314 this->__throw_length_error(); 3315 3316#if _LIBCPP_STD_VER > 17 3317 // Reserve never shrinks as of C++20. 3318 if (__requested_capacity <= capacity()) return; 3319#endif 3320 3321 size_type __target_capacity = _VSTD::max(__requested_capacity, size()); 3322 __target_capacity = __recommend(__target_capacity); 3323 if (__target_capacity == capacity()) return; 3324 3325 __shrink_or_extend(__target_capacity); 3326} 3327 3328template <class _CharT, class _Traits, class _Allocator> 3329void 3330basic_string<_CharT, _Traits, _Allocator>::shrink_to_fit() _NOEXCEPT 3331{ 3332 size_type __target_capacity = __recommend(size()); 3333 if (__target_capacity == capacity()) return; 3334 3335 __shrink_or_extend(__target_capacity); 3336} 3337 3338template <class _CharT, class _Traits, class _Allocator> 3339void 3340basic_string<_CharT, _Traits, _Allocator>::__shrink_or_extend(size_type __target_capacity) 3341{ 3342 size_type __cap = capacity(); 3343 size_type __sz = size(); 3344 3345 pointer __new_data, __p; 3346 bool __was_long, __now_long; 3347 if (__target_capacity == __min_cap - 1) 3348 { 3349 __was_long = true; 3350 __now_long = false; 3351 __new_data = __get_short_pointer(); 3352 __p = __get_long_pointer(); 3353 } 3354 else 3355 { 3356 if (__target_capacity > __cap) 3357 __new_data = __alloc_traits::allocate(__alloc(), __target_capacity+1); 3358 else 3359 { 3360 #ifndef _LIBCPP_NO_EXCEPTIONS 3361 try 3362 { 3363 #endif // _LIBCPP_NO_EXCEPTIONS 3364 __new_data = __alloc_traits::allocate(__alloc(), __target_capacity+1); 3365 #ifndef _LIBCPP_NO_EXCEPTIONS 3366 } 3367 catch (...) 3368 { 3369 return; 3370 } 3371 #else // _LIBCPP_NO_EXCEPTIONS 3372 if (__new_data == nullptr) 3373 return; 3374 #endif // _LIBCPP_NO_EXCEPTIONS 3375 } 3376 __now_long = true; 3377 __was_long = __is_long(); 3378 __p = __get_pointer(); 3379 } 3380 traits_type::copy(_VSTD::__to_address(__new_data), 3381 _VSTD::__to_address(__p), size()+1); 3382 if (__was_long) 3383 __alloc_traits::deallocate(__alloc(), __p, __cap+1); 3384 if (__now_long) 3385 { 3386 __set_long_cap(__target_capacity+1); 3387 __set_long_size(__sz); 3388 __set_long_pointer(__new_data); 3389 } 3390 else 3391 __set_short_size(__sz); 3392 __invalidate_all_iterators(); 3393} 3394 3395template <class _CharT, class _Traits, class _Allocator> 3396inline 3397typename basic_string<_CharT, _Traits, _Allocator>::const_reference 3398basic_string<_CharT, _Traits, _Allocator>::operator[](size_type __pos) const _NOEXCEPT 3399{ 3400 _LIBCPP_ASSERT(__pos <= size(), "string index out of bounds"); 3401 return *(data() + __pos); 3402} 3403 3404template <class _CharT, class _Traits, class _Allocator> 3405inline 3406typename basic_string<_CharT, _Traits, _Allocator>::reference 3407basic_string<_CharT, _Traits, _Allocator>::operator[](size_type __pos) _NOEXCEPT 3408{ 3409 _LIBCPP_ASSERT(__pos <= size(), "string index out of bounds"); 3410 return *(__get_pointer() + __pos); 3411} 3412 3413template <class _CharT, class _Traits, class _Allocator> 3414typename basic_string<_CharT, _Traits, _Allocator>::const_reference 3415basic_string<_CharT, _Traits, _Allocator>::at(size_type __n) const 3416{ 3417 if (__n >= size()) 3418 this->__throw_out_of_range(); 3419 return (*this)[__n]; 3420} 3421 3422template <class _CharT, class _Traits, class _Allocator> 3423typename basic_string<_CharT, _Traits, _Allocator>::reference 3424basic_string<_CharT, _Traits, _Allocator>::at(size_type __n) 3425{ 3426 if (__n >= size()) 3427 this->__throw_out_of_range(); 3428 return (*this)[__n]; 3429} 3430 3431template <class _CharT, class _Traits, class _Allocator> 3432inline 3433typename basic_string<_CharT, _Traits, _Allocator>::reference 3434basic_string<_CharT, _Traits, _Allocator>::front() _NOEXCEPT 3435{ 3436 _LIBCPP_ASSERT(!empty(), "string::front(): string is empty"); 3437 return *__get_pointer(); 3438} 3439 3440template <class _CharT, class _Traits, class _Allocator> 3441inline 3442typename basic_string<_CharT, _Traits, _Allocator>::const_reference 3443basic_string<_CharT, _Traits, _Allocator>::front() const _NOEXCEPT 3444{ 3445 _LIBCPP_ASSERT(!empty(), "string::front(): string is empty"); 3446 return *data(); 3447} 3448 3449template <class _CharT, class _Traits, class _Allocator> 3450inline 3451typename basic_string<_CharT, _Traits, _Allocator>::reference 3452basic_string<_CharT, _Traits, _Allocator>::back() _NOEXCEPT 3453{ 3454 _LIBCPP_ASSERT(!empty(), "string::back(): string is empty"); 3455 return *(__get_pointer() + size() - 1); 3456} 3457 3458template <class _CharT, class _Traits, class _Allocator> 3459inline 3460typename basic_string<_CharT, _Traits, _Allocator>::const_reference 3461basic_string<_CharT, _Traits, _Allocator>::back() const _NOEXCEPT 3462{ 3463 _LIBCPP_ASSERT(!empty(), "string::back(): string is empty"); 3464 return *(data() + size() - 1); 3465} 3466 3467template <class _CharT, class _Traits, class _Allocator> 3468typename basic_string<_CharT, _Traits, _Allocator>::size_type 3469basic_string<_CharT, _Traits, _Allocator>::copy(value_type* __s, size_type __n, size_type __pos) const 3470{ 3471 size_type __sz = size(); 3472 if (__pos > __sz) 3473 this->__throw_out_of_range(); 3474 size_type __rlen = _VSTD::min(__n, __sz - __pos); 3475 traits_type::copy(__s, data() + __pos, __rlen); 3476 return __rlen; 3477} 3478 3479template <class _CharT, class _Traits, class _Allocator> 3480inline 3481basic_string<_CharT, _Traits, _Allocator> 3482basic_string<_CharT, _Traits, _Allocator>::substr(size_type __pos, size_type __n) const 3483{ 3484 return basic_string(*this, __pos, __n, __alloc()); 3485} 3486 3487template <class _CharT, class _Traits, class _Allocator> 3488inline 3489void 3490basic_string<_CharT, _Traits, _Allocator>::swap(basic_string& __str) 3491#if _LIBCPP_STD_VER >= 14 3492 _NOEXCEPT 3493#else 3494 _NOEXCEPT_(!__alloc_traits::propagate_on_container_swap::value || 3495 __is_nothrow_swappable<allocator_type>::value) 3496#endif 3497{ 3498#if _LIBCPP_DEBUG_LEVEL == 2 3499 if (!__is_long()) 3500 __get_db()->__invalidate_all(this); 3501 if (!__str.__is_long()) 3502 __get_db()->__invalidate_all(&__str); 3503 __get_db()->swap(this, &__str); 3504#endif 3505 _LIBCPP_ASSERT( 3506 __alloc_traits::propagate_on_container_swap::value || 3507 __alloc_traits::is_always_equal::value || 3508 __alloc() == __str.__alloc(), "swapping non-equal allocators"); 3509 _VSTD::swap(__r_.first(), __str.__r_.first()); 3510 _VSTD::__swap_allocator(__alloc(), __str.__alloc()); 3511} 3512 3513// find 3514 3515template <class _Traits> 3516struct _LIBCPP_HIDDEN __traits_eq 3517{ 3518 typedef typename _Traits::char_type char_type; 3519 _LIBCPP_INLINE_VISIBILITY 3520 bool operator()(const char_type& __x, const char_type& __y) _NOEXCEPT 3521 {return _Traits::eq(__x, __y);} 3522}; 3523 3524template<class _CharT, class _Traits, class _Allocator> 3525typename basic_string<_CharT, _Traits, _Allocator>::size_type 3526basic_string<_CharT, _Traits, _Allocator>::find(const value_type* __s, 3527 size_type __pos, 3528 size_type __n) const _NOEXCEPT 3529{ 3530 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::find(): received nullptr"); 3531 return __str_find<value_type, size_type, traits_type, npos> 3532 (data(), size(), __s, __pos, __n); 3533} 3534 3535template<class _CharT, class _Traits, class _Allocator> 3536inline 3537typename basic_string<_CharT, _Traits, _Allocator>::size_type 3538basic_string<_CharT, _Traits, _Allocator>::find(const basic_string& __str, 3539 size_type __pos) const _NOEXCEPT 3540{ 3541 return __str_find<value_type, size_type, traits_type, npos> 3542 (data(), size(), __str.data(), __pos, __str.size()); 3543} 3544 3545template<class _CharT, class _Traits, class _Allocator> 3546template <class _Tp> 3547_EnableIf 3548< 3549 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3550 typename basic_string<_CharT, _Traits, _Allocator>::size_type 3551> 3552basic_string<_CharT, _Traits, _Allocator>::find(const _Tp &__t, 3553 size_type __pos) const _NOEXCEPT 3554{ 3555 __self_view __sv = __t; 3556 return __str_find<value_type, size_type, traits_type, npos> 3557 (data(), size(), __sv.data(), __pos, __sv.size()); 3558} 3559 3560template<class _CharT, class _Traits, class _Allocator> 3561inline 3562typename basic_string<_CharT, _Traits, _Allocator>::size_type 3563basic_string<_CharT, _Traits, _Allocator>::find(const value_type* __s, 3564 size_type __pos) const _NOEXCEPT 3565{ 3566 _LIBCPP_ASSERT(__s != nullptr, "string::find(): received nullptr"); 3567 return __str_find<value_type, size_type, traits_type, npos> 3568 (data(), size(), __s, __pos, traits_type::length(__s)); 3569} 3570 3571template<class _CharT, class _Traits, class _Allocator> 3572typename basic_string<_CharT, _Traits, _Allocator>::size_type 3573basic_string<_CharT, _Traits, _Allocator>::find(value_type __c, 3574 size_type __pos) const _NOEXCEPT 3575{ 3576 return __str_find<value_type, size_type, traits_type, npos> 3577 (data(), size(), __c, __pos); 3578} 3579 3580// rfind 3581 3582template<class _CharT, class _Traits, class _Allocator> 3583typename basic_string<_CharT, _Traits, _Allocator>::size_type 3584basic_string<_CharT, _Traits, _Allocator>::rfind(const value_type* __s, 3585 size_type __pos, 3586 size_type __n) const _NOEXCEPT 3587{ 3588 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::rfind(): received nullptr"); 3589 return __str_rfind<value_type, size_type, traits_type, npos> 3590 (data(), size(), __s, __pos, __n); 3591} 3592 3593template<class _CharT, class _Traits, class _Allocator> 3594inline 3595typename basic_string<_CharT, _Traits, _Allocator>::size_type 3596basic_string<_CharT, _Traits, _Allocator>::rfind(const basic_string& __str, 3597 size_type __pos) const _NOEXCEPT 3598{ 3599 return __str_rfind<value_type, size_type, traits_type, npos> 3600 (data(), size(), __str.data(), __pos, __str.size()); 3601} 3602 3603template<class _CharT, class _Traits, class _Allocator> 3604template <class _Tp> 3605_EnableIf 3606< 3607 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3608 typename basic_string<_CharT, _Traits, _Allocator>::size_type 3609> 3610basic_string<_CharT, _Traits, _Allocator>::rfind(const _Tp& __t, 3611 size_type __pos) const _NOEXCEPT 3612{ 3613 __self_view __sv = __t; 3614 return __str_rfind<value_type, size_type, traits_type, npos> 3615 (data(), size(), __sv.data(), __pos, __sv.size()); 3616} 3617 3618template<class _CharT, class _Traits, class _Allocator> 3619inline 3620typename basic_string<_CharT, _Traits, _Allocator>::size_type 3621basic_string<_CharT, _Traits, _Allocator>::rfind(const value_type* __s, 3622 size_type __pos) const _NOEXCEPT 3623{ 3624 _LIBCPP_ASSERT(__s != nullptr, "string::rfind(): received nullptr"); 3625 return __str_rfind<value_type, size_type, traits_type, npos> 3626 (data(), size(), __s, __pos, traits_type::length(__s)); 3627} 3628 3629template<class _CharT, class _Traits, class _Allocator> 3630typename basic_string<_CharT, _Traits, _Allocator>::size_type 3631basic_string<_CharT, _Traits, _Allocator>::rfind(value_type __c, 3632 size_type __pos) const _NOEXCEPT 3633{ 3634 return __str_rfind<value_type, size_type, traits_type, npos> 3635 (data(), size(), __c, __pos); 3636} 3637 3638// find_first_of 3639 3640template<class _CharT, class _Traits, class _Allocator> 3641typename basic_string<_CharT, _Traits, _Allocator>::size_type 3642basic_string<_CharT, _Traits, _Allocator>::find_first_of(const value_type* __s, 3643 size_type __pos, 3644 size_type __n) const _NOEXCEPT 3645{ 3646 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::find_first_of(): received nullptr"); 3647 return __str_find_first_of<value_type, size_type, traits_type, npos> 3648 (data(), size(), __s, __pos, __n); 3649} 3650 3651template<class _CharT, class _Traits, class _Allocator> 3652inline 3653typename basic_string<_CharT, _Traits, _Allocator>::size_type 3654basic_string<_CharT, _Traits, _Allocator>::find_first_of(const basic_string& __str, 3655 size_type __pos) const _NOEXCEPT 3656{ 3657 return __str_find_first_of<value_type, size_type, traits_type, npos> 3658 (data(), size(), __str.data(), __pos, __str.size()); 3659} 3660 3661template<class _CharT, class _Traits, class _Allocator> 3662template <class _Tp> 3663_EnableIf 3664< 3665 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3666 typename basic_string<_CharT, _Traits, _Allocator>::size_type 3667> 3668basic_string<_CharT, _Traits, _Allocator>::find_first_of(const _Tp& __t, 3669 size_type __pos) const _NOEXCEPT 3670{ 3671 __self_view __sv = __t; 3672 return __str_find_first_of<value_type, size_type, traits_type, npos> 3673 (data(), size(), __sv.data(), __pos, __sv.size()); 3674} 3675 3676template<class _CharT, class _Traits, class _Allocator> 3677inline 3678typename basic_string<_CharT, _Traits, _Allocator>::size_type 3679basic_string<_CharT, _Traits, _Allocator>::find_first_of(const value_type* __s, 3680 size_type __pos) const _NOEXCEPT 3681{ 3682 _LIBCPP_ASSERT(__s != nullptr, "string::find_first_of(): received nullptr"); 3683 return __str_find_first_of<value_type, size_type, traits_type, npos> 3684 (data(), size(), __s, __pos, traits_type::length(__s)); 3685} 3686 3687template<class _CharT, class _Traits, class _Allocator> 3688inline 3689typename basic_string<_CharT, _Traits, _Allocator>::size_type 3690basic_string<_CharT, _Traits, _Allocator>::find_first_of(value_type __c, 3691 size_type __pos) const _NOEXCEPT 3692{ 3693 return find(__c, __pos); 3694} 3695 3696// find_last_of 3697 3698template<class _CharT, class _Traits, class _Allocator> 3699typename basic_string<_CharT, _Traits, _Allocator>::size_type 3700basic_string<_CharT, _Traits, _Allocator>::find_last_of(const value_type* __s, 3701 size_type __pos, 3702 size_type __n) const _NOEXCEPT 3703{ 3704 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::find_last_of(): received nullptr"); 3705 return __str_find_last_of<value_type, size_type, traits_type, npos> 3706 (data(), size(), __s, __pos, __n); 3707} 3708 3709template<class _CharT, class _Traits, class _Allocator> 3710inline 3711typename basic_string<_CharT, _Traits, _Allocator>::size_type 3712basic_string<_CharT, _Traits, _Allocator>::find_last_of(const basic_string& __str, 3713 size_type __pos) const _NOEXCEPT 3714{ 3715 return __str_find_last_of<value_type, size_type, traits_type, npos> 3716 (data(), size(), __str.data(), __pos, __str.size()); 3717} 3718 3719template<class _CharT, class _Traits, class _Allocator> 3720template <class _Tp> 3721_EnableIf 3722< 3723 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3724 typename basic_string<_CharT, _Traits, _Allocator>::size_type 3725> 3726basic_string<_CharT, _Traits, _Allocator>::find_last_of(const _Tp& __t, 3727 size_type __pos) const _NOEXCEPT 3728{ 3729 __self_view __sv = __t; 3730 return __str_find_last_of<value_type, size_type, traits_type, npos> 3731 (data(), size(), __sv.data(), __pos, __sv.size()); 3732} 3733 3734template<class _CharT, class _Traits, class _Allocator> 3735inline 3736typename basic_string<_CharT, _Traits, _Allocator>::size_type 3737basic_string<_CharT, _Traits, _Allocator>::find_last_of(const value_type* __s, 3738 size_type __pos) const _NOEXCEPT 3739{ 3740 _LIBCPP_ASSERT(__s != nullptr, "string::find_last_of(): received nullptr"); 3741 return __str_find_last_of<value_type, size_type, traits_type, npos> 3742 (data(), size(), __s, __pos, traits_type::length(__s)); 3743} 3744 3745template<class _CharT, class _Traits, class _Allocator> 3746inline 3747typename basic_string<_CharT, _Traits, _Allocator>::size_type 3748basic_string<_CharT, _Traits, _Allocator>::find_last_of(value_type __c, 3749 size_type __pos) const _NOEXCEPT 3750{ 3751 return rfind(__c, __pos); 3752} 3753 3754// find_first_not_of 3755 3756template<class _CharT, class _Traits, class _Allocator> 3757typename basic_string<_CharT, _Traits, _Allocator>::size_type 3758basic_string<_CharT, _Traits, _Allocator>::find_first_not_of(const value_type* __s, 3759 size_type __pos, 3760 size_type __n) const _NOEXCEPT 3761{ 3762 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::find_first_not_of(): received nullptr"); 3763 return __str_find_first_not_of<value_type, size_type, traits_type, npos> 3764 (data(), size(), __s, __pos, __n); 3765} 3766 3767template<class _CharT, class _Traits, class _Allocator> 3768inline 3769typename basic_string<_CharT, _Traits, _Allocator>::size_type 3770basic_string<_CharT, _Traits, _Allocator>::find_first_not_of(const basic_string& __str, 3771 size_type __pos) const _NOEXCEPT 3772{ 3773 return __str_find_first_not_of<value_type, size_type, traits_type, npos> 3774 (data(), size(), __str.data(), __pos, __str.size()); 3775} 3776 3777template<class _CharT, class _Traits, class _Allocator> 3778template <class _Tp> 3779_EnableIf 3780< 3781 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3782 typename basic_string<_CharT, _Traits, _Allocator>::size_type 3783> 3784basic_string<_CharT, _Traits, _Allocator>::find_first_not_of(const _Tp& __t, 3785 size_type __pos) const _NOEXCEPT 3786{ 3787 __self_view __sv = __t; 3788 return __str_find_first_not_of<value_type, size_type, traits_type, npos> 3789 (data(), size(), __sv.data(), __pos, __sv.size()); 3790} 3791 3792template<class _CharT, class _Traits, class _Allocator> 3793inline 3794typename basic_string<_CharT, _Traits, _Allocator>::size_type 3795basic_string<_CharT, _Traits, _Allocator>::find_first_not_of(const value_type* __s, 3796 size_type __pos) const _NOEXCEPT 3797{ 3798 _LIBCPP_ASSERT(__s != nullptr, "string::find_first_not_of(): received nullptr"); 3799 return __str_find_first_not_of<value_type, size_type, traits_type, npos> 3800 (data(), size(), __s, __pos, traits_type::length(__s)); 3801} 3802 3803template<class _CharT, class _Traits, class _Allocator> 3804inline 3805typename basic_string<_CharT, _Traits, _Allocator>::size_type 3806basic_string<_CharT, _Traits, _Allocator>::find_first_not_of(value_type __c, 3807 size_type __pos) const _NOEXCEPT 3808{ 3809 return __str_find_first_not_of<value_type, size_type, traits_type, npos> 3810 (data(), size(), __c, __pos); 3811} 3812 3813// find_last_not_of 3814 3815template<class _CharT, class _Traits, class _Allocator> 3816typename basic_string<_CharT, _Traits, _Allocator>::size_type 3817basic_string<_CharT, _Traits, _Allocator>::find_last_not_of(const value_type* __s, 3818 size_type __pos, 3819 size_type __n) const _NOEXCEPT 3820{ 3821 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::find_last_not_of(): received nullptr"); 3822 return __str_find_last_not_of<value_type, size_type, traits_type, npos> 3823 (data(), size(), __s, __pos, __n); 3824} 3825 3826template<class _CharT, class _Traits, class _Allocator> 3827inline 3828typename basic_string<_CharT, _Traits, _Allocator>::size_type 3829basic_string<_CharT, _Traits, _Allocator>::find_last_not_of(const basic_string& __str, 3830 size_type __pos) const _NOEXCEPT 3831{ 3832 return __str_find_last_not_of<value_type, size_type, traits_type, npos> 3833 (data(), size(), __str.data(), __pos, __str.size()); 3834} 3835 3836template<class _CharT, class _Traits, class _Allocator> 3837template <class _Tp> 3838_EnableIf 3839< 3840 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3841 typename basic_string<_CharT, _Traits, _Allocator>::size_type 3842> 3843basic_string<_CharT, _Traits, _Allocator>::find_last_not_of(const _Tp& __t, 3844 size_type __pos) const _NOEXCEPT 3845{ 3846 __self_view __sv = __t; 3847 return __str_find_last_not_of<value_type, size_type, traits_type, npos> 3848 (data(), size(), __sv.data(), __pos, __sv.size()); 3849} 3850 3851template<class _CharT, class _Traits, class _Allocator> 3852inline 3853typename basic_string<_CharT, _Traits, _Allocator>::size_type 3854basic_string<_CharT, _Traits, _Allocator>::find_last_not_of(const value_type* __s, 3855 size_type __pos) const _NOEXCEPT 3856{ 3857 _LIBCPP_ASSERT(__s != nullptr, "string::find_last_not_of(): received nullptr"); 3858 return __str_find_last_not_of<value_type, size_type, traits_type, npos> 3859 (data(), size(), __s, __pos, traits_type::length(__s)); 3860} 3861 3862template<class _CharT, class _Traits, class _Allocator> 3863inline 3864typename basic_string<_CharT, _Traits, _Allocator>::size_type 3865basic_string<_CharT, _Traits, _Allocator>::find_last_not_of(value_type __c, 3866 size_type __pos) const _NOEXCEPT 3867{ 3868 return __str_find_last_not_of<value_type, size_type, traits_type, npos> 3869 (data(), size(), __c, __pos); 3870} 3871 3872// compare 3873 3874template <class _CharT, class _Traits, class _Allocator> 3875template <class _Tp> 3876_EnableIf 3877< 3878 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3879 int 3880> 3881basic_string<_CharT, _Traits, _Allocator>::compare(const _Tp& __t) const _NOEXCEPT 3882{ 3883 __self_view __sv = __t; 3884 size_t __lhs_sz = size(); 3885 size_t __rhs_sz = __sv.size(); 3886 int __result = traits_type::compare(data(), __sv.data(), 3887 _VSTD::min(__lhs_sz, __rhs_sz)); 3888 if (__result != 0) 3889 return __result; 3890 if (__lhs_sz < __rhs_sz) 3891 return -1; 3892 if (__lhs_sz > __rhs_sz) 3893 return 1; 3894 return 0; 3895} 3896 3897template <class _CharT, class _Traits, class _Allocator> 3898inline 3899int 3900basic_string<_CharT, _Traits, _Allocator>::compare(const basic_string& __str) const _NOEXCEPT 3901{ 3902 return compare(__self_view(__str)); 3903} 3904 3905template <class _CharT, class _Traits, class _Allocator> 3906int 3907basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1, 3908 size_type __n1, 3909 const value_type* __s, 3910 size_type __n2) const 3911{ 3912 _LIBCPP_ASSERT(__n2 == 0 || __s != nullptr, "string::compare(): received nullptr"); 3913 size_type __sz = size(); 3914 if (__pos1 > __sz || __n2 == npos) 3915 this->__throw_out_of_range(); 3916 size_type __rlen = _VSTD::min(__n1, __sz - __pos1); 3917 int __r = traits_type::compare(data() + __pos1, __s, _VSTD::min(__rlen, __n2)); 3918 if (__r == 0) 3919 { 3920 if (__rlen < __n2) 3921 __r = -1; 3922 else if (__rlen > __n2) 3923 __r = 1; 3924 } 3925 return __r; 3926} 3927 3928template <class _CharT, class _Traits, class _Allocator> 3929template <class _Tp> 3930_EnableIf 3931< 3932 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3933 int 3934> 3935basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1, 3936 size_type __n1, 3937 const _Tp& __t) const 3938{ 3939 __self_view __sv = __t; 3940 return compare(__pos1, __n1, __sv.data(), __sv.size()); 3941} 3942 3943template <class _CharT, class _Traits, class _Allocator> 3944inline 3945int 3946basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1, 3947 size_type __n1, 3948 const basic_string& __str) const 3949{ 3950 return compare(__pos1, __n1, __str.data(), __str.size()); 3951} 3952 3953template <class _CharT, class _Traits, class _Allocator> 3954template <class _Tp> 3955_EnableIf 3956< 3957 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value 3958 && !__is_same_uncvref<_Tp, basic_string<_CharT, _Traits, _Allocator> >::value, 3959 int 3960> 3961basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1, 3962 size_type __n1, 3963 const _Tp& __t, 3964 size_type __pos2, 3965 size_type __n2) const 3966{ 3967 __self_view __sv = __t; 3968 return __self_view(*this).substr(__pos1, __n1).compare(__sv.substr(__pos2, __n2)); 3969} 3970 3971template <class _CharT, class _Traits, class _Allocator> 3972int 3973basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1, 3974 size_type __n1, 3975 const basic_string& __str, 3976 size_type __pos2, 3977 size_type __n2) const 3978{ 3979 return compare(__pos1, __n1, __self_view(__str), __pos2, __n2); 3980} 3981 3982template <class _CharT, class _Traits, class _Allocator> 3983int 3984basic_string<_CharT, _Traits, _Allocator>::compare(const value_type* __s) const _NOEXCEPT 3985{ 3986 _LIBCPP_ASSERT(__s != nullptr, "string::compare(): received nullptr"); 3987 return compare(0, npos, __s, traits_type::length(__s)); 3988} 3989 3990template <class _CharT, class _Traits, class _Allocator> 3991int 3992basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1, 3993 size_type __n1, 3994 const value_type* __s) const 3995{ 3996 _LIBCPP_ASSERT(__s != nullptr, "string::compare(): received nullptr"); 3997 return compare(__pos1, __n1, __s, traits_type::length(__s)); 3998} 3999 4000// __invariants 4001 4002template<class _CharT, class _Traits, class _Allocator> 4003inline 4004bool 4005basic_string<_CharT, _Traits, _Allocator>::__invariants() const 4006{ 4007 if (size() > capacity()) 4008 return false; 4009 if (capacity() < __min_cap - 1) 4010 return false; 4011 if (data() == nullptr) 4012 return false; 4013 if (data()[size()] != value_type()) 4014 return false; 4015 return true; 4016} 4017 4018// __clear_and_shrink 4019 4020template<class _CharT, class _Traits, class _Allocator> 4021inline 4022void 4023basic_string<_CharT, _Traits, _Allocator>::__clear_and_shrink() _NOEXCEPT 4024{ 4025 clear(); 4026 if(__is_long()) 4027 { 4028 __alloc_traits::deallocate(__alloc(), __get_long_pointer(), capacity() + 1); 4029 __set_long_cap(0); 4030 __set_short_size(0); 4031 traits_type::assign(*__get_short_pointer(), value_type()); 4032 } 4033} 4034 4035// operator== 4036 4037template<class _CharT, class _Traits, class _Allocator> 4038inline _LIBCPP_INLINE_VISIBILITY 4039bool 4040operator==(const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4041 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4042{ 4043 size_t __lhs_sz = __lhs.size(); 4044 return __lhs_sz == __rhs.size() && _Traits::compare(__lhs.data(), 4045 __rhs.data(), 4046 __lhs_sz) == 0; 4047} 4048 4049template<class _Allocator> 4050inline _LIBCPP_INLINE_VISIBILITY 4051bool 4052operator==(const basic_string<char, char_traits<char>, _Allocator>& __lhs, 4053 const basic_string<char, char_traits<char>, _Allocator>& __rhs) _NOEXCEPT 4054{ 4055 size_t __lhs_sz = __lhs.size(); 4056 if (__lhs_sz != __rhs.size()) 4057 return false; 4058 const char* __lp = __lhs.data(); 4059 const char* __rp = __rhs.data(); 4060 if (__lhs.__is_long()) 4061 return char_traits<char>::compare(__lp, __rp, __lhs_sz) == 0; 4062 for (; __lhs_sz != 0; --__lhs_sz, ++__lp, ++__rp) 4063 if (*__lp != *__rp) 4064 return false; 4065 return true; 4066} 4067 4068template<class _CharT, class _Traits, class _Allocator> 4069inline _LIBCPP_INLINE_VISIBILITY 4070bool 4071operator==(const _CharT* __lhs, 4072 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4073{ 4074 typedef basic_string<_CharT, _Traits, _Allocator> _String; 4075 _LIBCPP_ASSERT(__lhs != nullptr, "operator==(char*, basic_string): received nullptr"); 4076 size_t __lhs_len = _Traits::length(__lhs); 4077 if (__lhs_len != __rhs.size()) return false; 4078 return __rhs.compare(0, _String::npos, __lhs, __lhs_len) == 0; 4079} 4080 4081template<class _CharT, class _Traits, class _Allocator> 4082inline _LIBCPP_INLINE_VISIBILITY 4083bool 4084operator==(const basic_string<_CharT,_Traits,_Allocator>& __lhs, 4085 const _CharT* __rhs) _NOEXCEPT 4086{ 4087 typedef basic_string<_CharT, _Traits, _Allocator> _String; 4088 _LIBCPP_ASSERT(__rhs != nullptr, "operator==(basic_string, char*): received nullptr"); 4089 size_t __rhs_len = _Traits::length(__rhs); 4090 if (__rhs_len != __lhs.size()) return false; 4091 return __lhs.compare(0, _String::npos, __rhs, __rhs_len) == 0; 4092} 4093 4094template<class _CharT, class _Traits, class _Allocator> 4095inline _LIBCPP_INLINE_VISIBILITY 4096bool 4097operator!=(const basic_string<_CharT,_Traits,_Allocator>& __lhs, 4098 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4099{ 4100 return !(__lhs == __rhs); 4101} 4102 4103template<class _CharT, class _Traits, class _Allocator> 4104inline _LIBCPP_INLINE_VISIBILITY 4105bool 4106operator!=(const _CharT* __lhs, 4107 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4108{ 4109 return !(__lhs == __rhs); 4110} 4111 4112template<class _CharT, class _Traits, class _Allocator> 4113inline _LIBCPP_INLINE_VISIBILITY 4114bool 4115operator!=(const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4116 const _CharT* __rhs) _NOEXCEPT 4117{ 4118 return !(__lhs == __rhs); 4119} 4120 4121// operator< 4122 4123template<class _CharT, class _Traits, class _Allocator> 4124inline _LIBCPP_INLINE_VISIBILITY 4125bool 4126operator< (const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4127 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4128{ 4129 return __lhs.compare(__rhs) < 0; 4130} 4131 4132template<class _CharT, class _Traits, class _Allocator> 4133inline _LIBCPP_INLINE_VISIBILITY 4134bool 4135operator< (const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4136 const _CharT* __rhs) _NOEXCEPT 4137{ 4138 return __lhs.compare(__rhs) < 0; 4139} 4140 4141template<class _CharT, class _Traits, class _Allocator> 4142inline _LIBCPP_INLINE_VISIBILITY 4143bool 4144operator< (const _CharT* __lhs, 4145 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4146{ 4147 return __rhs.compare(__lhs) > 0; 4148} 4149 4150// operator> 4151 4152template<class _CharT, class _Traits, class _Allocator> 4153inline _LIBCPP_INLINE_VISIBILITY 4154bool 4155operator> (const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4156 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4157{ 4158 return __rhs < __lhs; 4159} 4160 4161template<class _CharT, class _Traits, class _Allocator> 4162inline _LIBCPP_INLINE_VISIBILITY 4163bool 4164operator> (const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4165 const _CharT* __rhs) _NOEXCEPT 4166{ 4167 return __rhs < __lhs; 4168} 4169 4170template<class _CharT, class _Traits, class _Allocator> 4171inline _LIBCPP_INLINE_VISIBILITY 4172bool 4173operator> (const _CharT* __lhs, 4174 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4175{ 4176 return __rhs < __lhs; 4177} 4178 4179// operator<= 4180 4181template<class _CharT, class _Traits, class _Allocator> 4182inline _LIBCPP_INLINE_VISIBILITY 4183bool 4184operator<=(const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4185 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4186{ 4187 return !(__rhs < __lhs); 4188} 4189 4190template<class _CharT, class _Traits, class _Allocator> 4191inline _LIBCPP_INLINE_VISIBILITY 4192bool 4193operator<=(const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4194 const _CharT* __rhs) _NOEXCEPT 4195{ 4196 return !(__rhs < __lhs); 4197} 4198 4199template<class _CharT, class _Traits, class _Allocator> 4200inline _LIBCPP_INLINE_VISIBILITY 4201bool 4202operator<=(const _CharT* __lhs, 4203 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4204{ 4205 return !(__rhs < __lhs); 4206} 4207 4208// operator>= 4209 4210template<class _CharT, class _Traits, class _Allocator> 4211inline _LIBCPP_INLINE_VISIBILITY 4212bool 4213operator>=(const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4214 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4215{ 4216 return !(__lhs < __rhs); 4217} 4218 4219template<class _CharT, class _Traits, class _Allocator> 4220inline _LIBCPP_INLINE_VISIBILITY 4221bool 4222operator>=(const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4223 const _CharT* __rhs) _NOEXCEPT 4224{ 4225 return !(__lhs < __rhs); 4226} 4227 4228template<class _CharT, class _Traits, class _Allocator> 4229inline _LIBCPP_INLINE_VISIBILITY 4230bool 4231operator>=(const _CharT* __lhs, 4232 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4233{ 4234 return !(__lhs < __rhs); 4235} 4236 4237// operator + 4238 4239template<class _CharT, class _Traits, class _Allocator> 4240basic_string<_CharT, _Traits, _Allocator> 4241operator+(const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4242 const basic_string<_CharT, _Traits, _Allocator>& __rhs) 4243{ 4244 basic_string<_CharT, _Traits, _Allocator> __r(__lhs.get_allocator()); 4245 typename basic_string<_CharT, _Traits, _Allocator>::size_type __lhs_sz = __lhs.size(); 4246 typename basic_string<_CharT, _Traits, _Allocator>::size_type __rhs_sz = __rhs.size(); 4247 __r.__init(__lhs.data(), __lhs_sz, __lhs_sz + __rhs_sz); 4248 __r.append(__rhs.data(), __rhs_sz); 4249 return __r; 4250} 4251 4252template<class _CharT, class _Traits, class _Allocator> 4253basic_string<_CharT, _Traits, _Allocator> 4254operator+(const _CharT* __lhs , const basic_string<_CharT,_Traits,_Allocator>& __rhs) 4255{ 4256 basic_string<_CharT, _Traits, _Allocator> __r(__rhs.get_allocator()); 4257 typename basic_string<_CharT, _Traits, _Allocator>::size_type __lhs_sz = _Traits::length(__lhs); 4258 typename basic_string<_CharT, _Traits, _Allocator>::size_type __rhs_sz = __rhs.size(); 4259 __r.__init(__lhs, __lhs_sz, __lhs_sz + __rhs_sz); 4260 __r.append(__rhs.data(), __rhs_sz); 4261 return __r; 4262} 4263 4264template<class _CharT, class _Traits, class _Allocator> 4265basic_string<_CharT, _Traits, _Allocator> 4266operator+(_CharT __lhs, const basic_string<_CharT,_Traits,_Allocator>& __rhs) 4267{ 4268 basic_string<_CharT, _Traits, _Allocator> __r(__rhs.get_allocator()); 4269 typename basic_string<_CharT, _Traits, _Allocator>::size_type __rhs_sz = __rhs.size(); 4270 __r.__init(&__lhs, 1, 1 + __rhs_sz); 4271 __r.append(__rhs.data(), __rhs_sz); 4272 return __r; 4273} 4274 4275template<class _CharT, class _Traits, class _Allocator> 4276inline 4277basic_string<_CharT, _Traits, _Allocator> 4278operator+(const basic_string<_CharT, _Traits, _Allocator>& __lhs, const _CharT* __rhs) 4279{ 4280 basic_string<_CharT, _Traits, _Allocator> __r(__lhs.get_allocator()); 4281 typename basic_string<_CharT, _Traits, _Allocator>::size_type __lhs_sz = __lhs.size(); 4282 typename basic_string<_CharT, _Traits, _Allocator>::size_type __rhs_sz = _Traits::length(__rhs); 4283 __r.__init(__lhs.data(), __lhs_sz, __lhs_sz + __rhs_sz); 4284 __r.append(__rhs, __rhs_sz); 4285 return __r; 4286} 4287 4288template<class _CharT, class _Traits, class _Allocator> 4289basic_string<_CharT, _Traits, _Allocator> 4290operator+(const basic_string<_CharT, _Traits, _Allocator>& __lhs, _CharT __rhs) 4291{ 4292 basic_string<_CharT, _Traits, _Allocator> __r(__lhs.get_allocator()); 4293 typename basic_string<_CharT, _Traits, _Allocator>::size_type __lhs_sz = __lhs.size(); 4294 __r.__init(__lhs.data(), __lhs_sz, __lhs_sz + 1); 4295 __r.push_back(__rhs); 4296 return __r; 4297} 4298 4299#ifndef _LIBCPP_CXX03_LANG 4300 4301template<class _CharT, class _Traits, class _Allocator> 4302inline _LIBCPP_INLINE_VISIBILITY 4303basic_string<_CharT, _Traits, _Allocator> 4304operator+(basic_string<_CharT, _Traits, _Allocator>&& __lhs, const basic_string<_CharT, _Traits, _Allocator>& __rhs) 4305{ 4306 return _VSTD::move(__lhs.append(__rhs)); 4307} 4308 4309template<class _CharT, class _Traits, class _Allocator> 4310inline _LIBCPP_INLINE_VISIBILITY 4311basic_string<_CharT, _Traits, _Allocator> 4312operator+(const basic_string<_CharT, _Traits, _Allocator>& __lhs, basic_string<_CharT, _Traits, _Allocator>&& __rhs) 4313{ 4314 return _VSTD::move(__rhs.insert(0, __lhs)); 4315} 4316 4317template<class _CharT, class _Traits, class _Allocator> 4318inline _LIBCPP_INLINE_VISIBILITY 4319basic_string<_CharT, _Traits, _Allocator> 4320operator+(basic_string<_CharT, _Traits, _Allocator>&& __lhs, basic_string<_CharT, _Traits, _Allocator>&& __rhs) 4321{ 4322 return _VSTD::move(__lhs.append(__rhs)); 4323} 4324 4325template<class _CharT, class _Traits, class _Allocator> 4326inline _LIBCPP_INLINE_VISIBILITY 4327basic_string<_CharT, _Traits, _Allocator> 4328operator+(const _CharT* __lhs , basic_string<_CharT,_Traits,_Allocator>&& __rhs) 4329{ 4330 return _VSTD::move(__rhs.insert(0, __lhs)); 4331} 4332 4333template<class _CharT, class _Traits, class _Allocator> 4334inline _LIBCPP_INLINE_VISIBILITY 4335basic_string<_CharT, _Traits, _Allocator> 4336operator+(_CharT __lhs, basic_string<_CharT,_Traits,_Allocator>&& __rhs) 4337{ 4338 __rhs.insert(__rhs.begin(), __lhs); 4339 return _VSTD::move(__rhs); 4340} 4341 4342template<class _CharT, class _Traits, class _Allocator> 4343inline _LIBCPP_INLINE_VISIBILITY 4344basic_string<_CharT, _Traits, _Allocator> 4345operator+(basic_string<_CharT, _Traits, _Allocator>&& __lhs, const _CharT* __rhs) 4346{ 4347 return _VSTD::move(__lhs.append(__rhs)); 4348} 4349 4350template<class _CharT, class _Traits, class _Allocator> 4351inline _LIBCPP_INLINE_VISIBILITY 4352basic_string<_CharT, _Traits, _Allocator> 4353operator+(basic_string<_CharT, _Traits, _Allocator>&& __lhs, _CharT __rhs) 4354{ 4355 __lhs.push_back(__rhs); 4356 return _VSTD::move(__lhs); 4357} 4358 4359#endif // _LIBCPP_CXX03_LANG 4360 4361// swap 4362 4363template<class _CharT, class _Traits, class _Allocator> 4364inline _LIBCPP_INLINE_VISIBILITY 4365void 4366swap(basic_string<_CharT, _Traits, _Allocator>& __lhs, 4367 basic_string<_CharT, _Traits, _Allocator>& __rhs) 4368 _NOEXCEPT_(_NOEXCEPT_(__lhs.swap(__rhs))) 4369{ 4370 __lhs.swap(__rhs); 4371} 4372 4373_LIBCPP_FUNC_VIS int stoi (const string& __str, size_t* __idx = nullptr, int __base = 10); 4374_LIBCPP_FUNC_VIS long stol (const string& __str, size_t* __idx = nullptr, int __base = 10); 4375_LIBCPP_FUNC_VIS unsigned long stoul (const string& __str, size_t* __idx = nullptr, int __base = 10); 4376_LIBCPP_FUNC_VIS long long stoll (const string& __str, size_t* __idx = nullptr, int __base = 10); 4377_LIBCPP_FUNC_VIS unsigned long long stoull(const string& __str, size_t* __idx = nullptr, int __base = 10); 4378 4379_LIBCPP_FUNC_VIS float stof (const string& __str, size_t* __idx = nullptr); 4380_LIBCPP_FUNC_VIS double stod (const string& __str, size_t* __idx = nullptr); 4381_LIBCPP_FUNC_VIS long double stold(const string& __str, size_t* __idx = nullptr); 4382 4383_LIBCPP_FUNC_VIS string to_string(int __val); 4384_LIBCPP_FUNC_VIS string to_string(unsigned __val); 4385_LIBCPP_FUNC_VIS string to_string(long __val); 4386_LIBCPP_FUNC_VIS string to_string(unsigned long __val); 4387_LIBCPP_FUNC_VIS string to_string(long long __val); 4388_LIBCPP_FUNC_VIS string to_string(unsigned long long __val); 4389_LIBCPP_FUNC_VIS string to_string(float __val); 4390_LIBCPP_FUNC_VIS string to_string(double __val); 4391_LIBCPP_FUNC_VIS string to_string(long double __val); 4392 4393_LIBCPP_FUNC_VIS int stoi (const wstring& __str, size_t* __idx = nullptr, int __base = 10); 4394_LIBCPP_FUNC_VIS long stol (const wstring& __str, size_t* __idx = nullptr, int __base = 10); 4395_LIBCPP_FUNC_VIS unsigned long stoul (const wstring& __str, size_t* __idx = nullptr, int __base = 10); 4396_LIBCPP_FUNC_VIS long long stoll (const wstring& __str, size_t* __idx = nullptr, int __base = 10); 4397_LIBCPP_FUNC_VIS unsigned long long stoull(const wstring& __str, size_t* __idx = nullptr, int __base = 10); 4398 4399_LIBCPP_FUNC_VIS float stof (const wstring& __str, size_t* __idx = nullptr); 4400_LIBCPP_FUNC_VIS double stod (const wstring& __str, size_t* __idx = nullptr); 4401_LIBCPP_FUNC_VIS long double stold(const wstring& __str, size_t* __idx = nullptr); 4402 4403_LIBCPP_FUNC_VIS wstring to_wstring(int __val); 4404_LIBCPP_FUNC_VIS wstring to_wstring(unsigned __val); 4405_LIBCPP_FUNC_VIS wstring to_wstring(long __val); 4406_LIBCPP_FUNC_VIS wstring to_wstring(unsigned long __val); 4407_LIBCPP_FUNC_VIS wstring to_wstring(long long __val); 4408_LIBCPP_FUNC_VIS wstring to_wstring(unsigned long long __val); 4409_LIBCPP_FUNC_VIS wstring to_wstring(float __val); 4410_LIBCPP_FUNC_VIS wstring to_wstring(double __val); 4411_LIBCPP_FUNC_VIS wstring to_wstring(long double __val); 4412 4413template<class _CharT, class _Traits, class _Allocator> 4414_LIBCPP_TEMPLATE_DATA_VIS 4415const typename basic_string<_CharT, _Traits, _Allocator>::size_type 4416 basic_string<_CharT, _Traits, _Allocator>::npos; 4417 4418template <class _CharT, class _Allocator> 4419struct _LIBCPP_TEMPLATE_VIS 4420 hash<basic_string<_CharT, char_traits<_CharT>, _Allocator> > 4421 : public unary_function< 4422 basic_string<_CharT, char_traits<_CharT>, _Allocator>, size_t> 4423{ 4424 size_t 4425 operator()(const basic_string<_CharT, char_traits<_CharT>, _Allocator>& __val) const _NOEXCEPT 4426 { return __do_string_hash(__val.data(), __val.data() + __val.size()); } 4427}; 4428 4429 4430template<class _CharT, class _Traits, class _Allocator> 4431basic_ostream<_CharT, _Traits>& 4432operator<<(basic_ostream<_CharT, _Traits>& __os, 4433 const basic_string<_CharT, _Traits, _Allocator>& __str); 4434 4435template<class _CharT, class _Traits, class _Allocator> 4436basic_istream<_CharT, _Traits>& 4437operator>>(basic_istream<_CharT, _Traits>& __is, 4438 basic_string<_CharT, _Traits, _Allocator>& __str); 4439 4440template<class _CharT, class _Traits, class _Allocator> 4441basic_istream<_CharT, _Traits>& 4442getline(basic_istream<_CharT, _Traits>& __is, 4443 basic_string<_CharT, _Traits, _Allocator>& __str, _CharT __dlm); 4444 4445template<class _CharT, class _Traits, class _Allocator> 4446inline _LIBCPP_INLINE_VISIBILITY 4447basic_istream<_CharT, _Traits>& 4448getline(basic_istream<_CharT, _Traits>& __is, 4449 basic_string<_CharT, _Traits, _Allocator>& __str); 4450 4451template<class _CharT, class _Traits, class _Allocator> 4452inline _LIBCPP_INLINE_VISIBILITY 4453basic_istream<_CharT, _Traits>& 4454getline(basic_istream<_CharT, _Traits>&& __is, 4455 basic_string<_CharT, _Traits, _Allocator>& __str, _CharT __dlm); 4456 4457template<class _CharT, class _Traits, class _Allocator> 4458inline _LIBCPP_INLINE_VISIBILITY 4459basic_istream<_CharT, _Traits>& 4460getline(basic_istream<_CharT, _Traits>&& __is, 4461 basic_string<_CharT, _Traits, _Allocator>& __str); 4462 4463#if _LIBCPP_STD_VER > 17 4464template <class _CharT, class _Traits, class _Allocator, class _Up> 4465inline _LIBCPP_INLINE_VISIBILITY 4466 typename basic_string<_CharT, _Traits, _Allocator>::size_type 4467 erase(basic_string<_CharT, _Traits, _Allocator>& __str, const _Up& __v) { 4468 auto __old_size = __str.size(); 4469 __str.erase(_VSTD::remove(__str.begin(), __str.end(), __v), __str.end()); 4470 return __old_size - __str.size(); 4471} 4472 4473template <class _CharT, class _Traits, class _Allocator, class _Predicate> 4474inline _LIBCPP_INLINE_VISIBILITY 4475 typename basic_string<_CharT, _Traits, _Allocator>::size_type 4476 erase_if(basic_string<_CharT, _Traits, _Allocator>& __str, 4477 _Predicate __pred) { 4478 auto __old_size = __str.size(); 4479 __str.erase(_VSTD::remove_if(__str.begin(), __str.end(), __pred), 4480 __str.end()); 4481 return __old_size - __str.size(); 4482} 4483#endif 4484 4485#if _LIBCPP_DEBUG_LEVEL == 2 4486 4487template<class _CharT, class _Traits, class _Allocator> 4488bool 4489basic_string<_CharT, _Traits, _Allocator>::__dereferenceable(const const_iterator* __i) const 4490{ 4491 return this->data() <= _VSTD::__to_address(__i->base()) && 4492 _VSTD::__to_address(__i->base()) < this->data() + this->size(); 4493} 4494 4495template<class _CharT, class _Traits, class _Allocator> 4496bool 4497basic_string<_CharT, _Traits, _Allocator>::__decrementable(const const_iterator* __i) const 4498{ 4499 return this->data() < _VSTD::__to_address(__i->base()) && 4500 _VSTD::__to_address(__i->base()) <= this->data() + this->size(); 4501} 4502 4503template<class _CharT, class _Traits, class _Allocator> 4504bool 4505basic_string<_CharT, _Traits, _Allocator>::__addable(const const_iterator* __i, ptrdiff_t __n) const 4506{ 4507 const value_type* __p = _VSTD::__to_address(__i->base()) + __n; 4508 return this->data() <= __p && __p <= this->data() + this->size(); 4509} 4510 4511template<class _CharT, class _Traits, class _Allocator> 4512bool 4513basic_string<_CharT, _Traits, _Allocator>::__subscriptable(const const_iterator* __i, ptrdiff_t __n) const 4514{ 4515 const value_type* __p = _VSTD::__to_address(__i->base()) + __n; 4516 return this->data() <= __p && __p < this->data() + this->size(); 4517} 4518 4519#endif // _LIBCPP_DEBUG_LEVEL == 2 4520 4521#if _LIBCPP_STD_VER > 11 4522// Literal suffixes for basic_string [basic.string.literals] 4523inline namespace literals 4524{ 4525 inline namespace string_literals 4526 { 4527 inline _LIBCPP_INLINE_VISIBILITY 4528 basic_string<char> operator "" s( const char *__str, size_t __len ) 4529 { 4530 return basic_string<char> (__str, __len); 4531 } 4532 4533 inline _LIBCPP_INLINE_VISIBILITY 4534 basic_string<wchar_t> operator "" s( const wchar_t *__str, size_t __len ) 4535 { 4536 return basic_string<wchar_t> (__str, __len); 4537 } 4538 4539#ifndef _LIBCPP_HAS_NO_CHAR8_T 4540 inline _LIBCPP_INLINE_VISIBILITY 4541 basic_string<char8_t> operator "" s(const char8_t *__str, size_t __len) _NOEXCEPT 4542 { 4543 return basic_string<char8_t> (__str, __len); 4544 } 4545#endif 4546 4547 inline _LIBCPP_INLINE_VISIBILITY 4548 basic_string<char16_t> operator "" s( const char16_t *__str, size_t __len ) 4549 { 4550 return basic_string<char16_t> (__str, __len); 4551 } 4552 4553 inline _LIBCPP_INLINE_VISIBILITY 4554 basic_string<char32_t> operator "" s( const char32_t *__str, size_t __len ) 4555 { 4556 return basic_string<char32_t> (__str, __len); 4557 } 4558 } 4559} 4560#endif 4561 4562_LIBCPP_END_NAMESPACE_STD 4563 4564_LIBCPP_POP_MACROS 4565 4566#endif // _LIBCPP_STRING 4567