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>; 72 73template<class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> > 74class basic_string 75{ 76public: 77// types: 78 typedef traits traits_type; 79 typedef typename traits_type::char_type value_type; 80 typedef Allocator allocator_type; 81 typedef typename allocator_type::size_type size_type; 82 typedef typename allocator_type::difference_type difference_type; 83 typedef typename allocator_type::reference reference; 84 typedef typename allocator_type::const_reference const_reference; 85 typedef typename allocator_type::pointer pointer; 86 typedef typename allocator_type::const_pointer const_pointer; 87 typedef implementation-defined iterator; 88 typedef implementation-defined const_iterator; 89 typedef std::reverse_iterator<iterator> reverse_iterator; 90 typedef std::reverse_iterator<const_iterator> const_reverse_iterator; 91 92 static const size_type npos = -1; 93 94 basic_string() 95 noexcept(is_nothrow_default_constructible<allocator_type>::value); 96 explicit basic_string(const allocator_type& a); 97 basic_string(const basic_string& str); 98 basic_string(basic_string&& str) 99 noexcept(is_nothrow_move_constructible<allocator_type>::value); 100 basic_string(const basic_string& str, size_type pos, 101 const allocator_type& a = allocator_type()); 102 basic_string(const basic_string& str, size_type pos, size_type n, 103 const Allocator& a = Allocator()); 104 template<class T> 105 basic_string(const T& t, size_type pos, size_type n, const Allocator& a = Allocator()); // C++17 106 template <class T> 107 explicit basic_string(const T& t, const Allocator& a = Allocator()); // C++17 108 basic_string(const value_type* s, const allocator_type& a = allocator_type()); 109 basic_string(const value_type* s, size_type n, const allocator_type& a = allocator_type()); 110 basic_string(size_type n, value_type c, const allocator_type& a = allocator_type()); 111 template<class InputIterator> 112 basic_string(InputIterator begin, InputIterator end, 113 const allocator_type& a = allocator_type()); 114 basic_string(initializer_list<value_type>, const Allocator& = Allocator()); 115 basic_string(const basic_string&, const Allocator&); 116 basic_string(basic_string&&, const Allocator&); 117 118 ~basic_string(); 119 120 operator basic_string_view<charT, traits>() const noexcept; 121 122 basic_string& operator=(const basic_string& str); 123 template <class T> 124 basic_string& operator=(const T& t); // C++17 125 basic_string& operator=(basic_string&& str) 126 noexcept( 127 allocator_type::propagate_on_container_move_assignment::value || 128 allocator_type::is_always_equal::value ); // C++17 129 basic_string& operator=(const value_type* s); 130 basic_string& operator=(value_type c); 131 basic_string& operator=(initializer_list<value_type>); 132 133 iterator begin() noexcept; 134 const_iterator begin() const noexcept; 135 iterator end() noexcept; 136 const_iterator end() const noexcept; 137 138 reverse_iterator rbegin() noexcept; 139 const_reverse_iterator rbegin() const noexcept; 140 reverse_iterator rend() noexcept; 141 const_reverse_iterator rend() const noexcept; 142 143 const_iterator cbegin() const noexcept; 144 const_iterator cend() const noexcept; 145 const_reverse_iterator crbegin() const noexcept; 146 const_reverse_iterator crend() const noexcept; 147 148 size_type size() const noexcept; 149 size_type length() const noexcept; 150 size_type max_size() const noexcept; 151 size_type capacity() const noexcept; 152 153 void resize(size_type n, value_type c); 154 void resize(size_type n); 155 156 void reserve(size_type res_arg = 0); 157 void shrink_to_fit(); 158 void clear() noexcept; 159 bool empty() const noexcept; 160 161 const_reference operator[](size_type pos) const; 162 reference operator[](size_type pos); 163 164 const_reference at(size_type n) const; 165 reference at(size_type n); 166 167 basic_string& operator+=(const basic_string& str); 168 template <class T> 169 basic_string& operator+=(const T& t); // C++17 170 basic_string& operator+=(const value_type* s); 171 basic_string& operator+=(value_type c); 172 basic_string& operator+=(initializer_list<value_type>); 173 174 basic_string& append(const basic_string& str); 175 template <class T> 176 basic_string& append(const T& t); // C++17 177 basic_string& append(const basic_string& str, size_type pos, size_type n=npos); //C++14 178 template <class T> 179 basic_string& append(const T& t, size_type pos, size_type n=npos); // C++17 180 basic_string& append(const value_type* s, size_type n); 181 basic_string& append(const value_type* s); 182 basic_string& append(size_type n, value_type c); 183 template<class InputIterator> 184 basic_string& append(InputIterator first, InputIterator last); 185 basic_string& append(initializer_list<value_type>); 186 187 void push_back(value_type c); 188 void pop_back(); 189 reference front(); 190 const_reference front() const; 191 reference back(); 192 const_reference back() const; 193 194 basic_string& assign(const basic_string& str); 195 template <class T> 196 basic_string& assign(const T& t); // C++17 197 basic_string& assign(basic_string&& str); 198 basic_string& assign(const basic_string& str, size_type pos, size_type n=npos); // C++14 199 template <class T> 200 basic_string& assign(const T& t, size_type pos, size_type n=npos); // C++17 201 basic_string& assign(const value_type* s, size_type n); 202 basic_string& assign(const value_type* s); 203 basic_string& assign(size_type n, value_type c); 204 template<class InputIterator> 205 basic_string& assign(InputIterator first, InputIterator last); 206 basic_string& assign(initializer_list<value_type>); 207 208 basic_string& insert(size_type pos1, const basic_string& str); 209 template <class T> 210 basic_string& insert(size_type pos1, const T& t); 211 basic_string& insert(size_type pos1, const basic_string& str, 212 size_type pos2, size_type n); 213 template <class T> 214 basic_string& insert(size_type pos1, const T& t, size_type pos2, size_type n); // C++17 215 basic_string& insert(size_type pos, const value_type* s, size_type n=npos); //C++14 216 basic_string& insert(size_type pos, const value_type* s); 217 basic_string& insert(size_type pos, size_type n, value_type c); 218 iterator insert(const_iterator p, value_type c); 219 iterator insert(const_iterator p, size_type n, value_type c); 220 template<class InputIterator> 221 iterator insert(const_iterator p, InputIterator first, InputIterator last); 222 iterator insert(const_iterator p, initializer_list<value_type>); 223 224 basic_string& erase(size_type pos = 0, size_type n = npos); 225 iterator erase(const_iterator position); 226 iterator erase(const_iterator first, const_iterator last); 227 228 basic_string& replace(size_type pos1, size_type n1, const basic_string& str); 229 template <class T> 230 basic_string& replace(size_type pos1, size_type n1, const T& t); // C++17 231 basic_string& replace(size_type pos1, size_type n1, const basic_string& str, 232 size_type pos2, size_type n2=npos); // C++14 233 template <class T> 234 basic_string& replace(size_type pos1, size_type n1, const T& t, 235 size_type pos2, size_type n); // C++17 236 basic_string& replace(size_type pos, size_type n1, const value_type* s, size_type n2); 237 basic_string& replace(size_type pos, size_type n1, const value_type* s); 238 basic_string& replace(size_type pos, size_type n1, size_type n2, value_type c); 239 basic_string& replace(const_iterator i1, const_iterator i2, const basic_string& str); 240 template <class T> 241 basic_string& replace(const_iterator i1, const_iterator i2, const T& t); // C++17 242 basic_string& replace(const_iterator i1, const_iterator i2, const value_type* s, size_type n); 243 basic_string& replace(const_iterator i1, const_iterator i2, const value_type* s); 244 basic_string& replace(const_iterator i1, const_iterator i2, size_type n, value_type c); 245 template<class InputIterator> 246 basic_string& replace(const_iterator i1, const_iterator i2, InputIterator j1, InputIterator j2); 247 basic_string& replace(const_iterator i1, const_iterator i2, initializer_list<value_type>); 248 249 size_type copy(value_type* s, size_type n, size_type pos = 0) const; 250 basic_string substr(size_type pos = 0, size_type n = npos) const; 251 252 void swap(basic_string& str) 253 noexcept(allocator_traits<allocator_type>::propagate_on_container_swap::value || 254 allocator_traits<allocator_type>::is_always_equal::value); // C++17 255 256 const value_type* c_str() const noexcept; 257 const value_type* data() const noexcept; 258 value_type* data() noexcept; // C++17 259 260 allocator_type get_allocator() const noexcept; 261 262 size_type find(const basic_string& str, size_type pos = 0) const noexcept; 263 template <class T> 264 size_type find(const T& t, size_type pos = 0) const; // C++17 265 size_type find(const value_type* s, size_type pos, size_type n) const noexcept; 266 size_type find(const value_type* s, size_type pos = 0) const noexcept; 267 size_type find(value_type c, size_type pos = 0) const noexcept; 268 269 size_type rfind(const basic_string& str, size_type pos = npos) const noexcept; 270 template <class T> 271 size_type rfind(const T& t, size_type pos = npos) const; // C++17 272 size_type rfind(const value_type* s, size_type pos, size_type n) const noexcept; 273 size_type rfind(const value_type* s, size_type pos = npos) const noexcept; 274 size_type rfind(value_type c, size_type pos = npos) const noexcept; 275 276 size_type find_first_of(const basic_string& str, size_type pos = 0) const noexcept; 277 template <class T> 278 size_type find_first_of(const T& t, size_type pos = 0) const; // C++17 279 size_type find_first_of(const value_type* s, size_type pos, size_type n) const noexcept; 280 size_type find_first_of(const value_type* s, size_type pos = 0) const noexcept; 281 size_type find_first_of(value_type c, size_type pos = 0) const noexcept; 282 283 size_type find_last_of(const basic_string& str, size_type pos = npos) const noexcept; 284 template <class T> 285 size_type find_last_of(const T& t, size_type pos = npos) const noexcept; // C++17 286 size_type find_last_of(const value_type* s, size_type pos, size_type n) const noexcept; 287 size_type find_last_of(const value_type* s, size_type pos = npos) const noexcept; 288 size_type find_last_of(value_type c, size_type pos = npos) const noexcept; 289 290 size_type find_first_not_of(const basic_string& str, size_type pos = 0) const noexcept; 291 template <class T> 292 size_type find_first_not_of(const T& t, size_type pos = 0) const; // C++17 293 size_type find_first_not_of(const value_type* s, size_type pos, size_type n) const noexcept; 294 size_type find_first_not_of(const value_type* s, size_type pos = 0) const noexcept; 295 size_type find_first_not_of(value_type c, size_type pos = 0) const noexcept; 296 297 size_type find_last_not_of(const basic_string& str, size_type pos = npos) const noexcept; 298 template <class T> 299 size_type find_last_not_of(const T& t, size_type pos = npos) const; // C++17 300 size_type find_last_not_of(const value_type* s, size_type pos, size_type n) const noexcept; 301 size_type find_last_not_of(const value_type* s, size_type pos = npos) const noexcept; 302 size_type find_last_not_of(value_type c, size_type pos = npos) const noexcept; 303 304 int compare(const basic_string& str) const noexcept; 305 template <class T> 306 int compare(const T& t) const noexcept; // C++17 307 int compare(size_type pos1, size_type n1, const basic_string& str) const; 308 template <class T> 309 int compare(size_type pos1, size_type n1, const T& t) const; // C++17 310 int compare(size_type pos1, size_type n1, const basic_string& str, 311 size_type pos2, size_type n2=npos) const; // C++14 312 template <class T> 313 int compare(size_type pos1, size_type n1, const T& t, 314 size_type pos2, size_type n2=npos) const; // C++17 315 int compare(const value_type* s) const noexcept; 316 int compare(size_type pos1, size_type n1, const value_type* s) const; 317 int compare(size_type pos1, size_type n1, const value_type* s, size_type n2) const; 318 319 bool starts_with(basic_string_view<charT, traits> sv) const noexcept; // C++2a 320 bool starts_with(charT c) const noexcept; // C++2a 321 bool starts_with(const charT* s) const; // C++2a 322 bool ends_with(basic_string_view<charT, traits> sv) const noexcept; // C++2a 323 bool ends_with(charT c) const noexcept; // C++2a 324 bool ends_with(const charT* s) const; // C++2a 325 326 bool __invariants() const; 327}; 328 329template<class InputIterator, 330 class Allocator = allocator<typename iterator_traits<InputIterator>::value_type>> 331basic_string(InputIterator, InputIterator, Allocator = Allocator()) 332 -> basic_string<typename iterator_traits<InputIterator>::value_type, 333 char_traits<typename iterator_traits<InputIterator>::value_type>, 334 Allocator>; // C++17 335 336template<class charT, class traits, class Allocator> 337basic_string<charT, traits, Allocator> 338operator+(const basic_string<charT, traits, Allocator>& lhs, 339 const basic_string<charT, traits, Allocator>& rhs); 340 341template<class charT, class traits, class Allocator> 342basic_string<charT, traits, Allocator> 343operator+(const charT* lhs , const basic_string<charT,traits,Allocator>&rhs); 344 345template<class charT, class traits, class Allocator> 346basic_string<charT, traits, Allocator> 347operator+(charT lhs, const basic_string<charT,traits,Allocator>& rhs); 348 349template<class charT, class traits, class Allocator> 350basic_string<charT, traits, Allocator> 351operator+(const basic_string<charT, traits, Allocator>& lhs, const charT* rhs); 352 353template<class charT, class traits, class Allocator> 354basic_string<charT, traits, Allocator> 355operator+(const basic_string<charT, traits, Allocator>& lhs, charT rhs); 356 357template<class charT, class traits, class Allocator> 358bool operator==(const basic_string<charT, traits, Allocator>& lhs, 359 const basic_string<charT, traits, Allocator>& rhs) noexcept; 360 361template<class charT, class traits, class Allocator> 362bool operator==(const charT* lhs, const basic_string<charT, traits, Allocator>& rhs) noexcept; 363 364template<class charT, class traits, class Allocator> 365bool operator==(const basic_string<charT,traits,Allocator>& lhs, const charT* rhs) noexcept; 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 basic_string<charT, traits, Allocator>& lhs, const charT* rhs) noexcept; 383 384template<class charT, class traits, class Allocator> 385bool operator< (const charT* lhs, const basic_string<charT, traits, Allocator>& 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> 418void swap(basic_string<charT, traits, Allocator>& lhs, 419 basic_string<charT, traits, Allocator>& rhs) 420 noexcept(noexcept(lhs.swap(rhs))); 421 422template<class charT, class traits, class Allocator> 423basic_istream<charT, traits>& 424operator>>(basic_istream<charT, traits>& is, basic_string<charT, traits, Allocator>& str); 425 426template<class charT, class traits, class Allocator> 427basic_ostream<charT, traits>& 428operator<<(basic_ostream<charT, traits>& os, const basic_string<charT, traits, Allocator>& str); 429 430template<class charT, class traits, class Allocator> 431basic_istream<charT, traits>& 432getline(basic_istream<charT, traits>& is, basic_string<charT, traits, Allocator>& str, 433 charT delim); 434 435template<class charT, class traits, class Allocator> 436basic_istream<charT, traits>& 437getline(basic_istream<charT, traits>& is, basic_string<charT, traits, Allocator>& str); 438 439template<class charT, class traits, class Allocator, class U> 440void erase(basic_string<charT, traits, Allocator>& c, const U& value); // C++20 441template<class charT, class traits, class Allocator, class Predicate> 442void erase_if(basic_string<charT, traits, Allocator>& c, Predicate pred); // C++20 443 444typedef basic_string<char> string; 445typedef basic_string<wchar_t> wstring; 446typedef basic_string<char16_t> u16string; 447typedef basic_string<char32_t> u32string; 448 449int stoi (const string& str, size_t* idx = 0, int base = 10); 450long stol (const string& str, size_t* idx = 0, int base = 10); 451unsigned long stoul (const string& str, size_t* idx = 0, int base = 10); 452long long stoll (const string& str, size_t* idx = 0, int base = 10); 453unsigned long long stoull(const string& str, size_t* idx = 0, int base = 10); 454 455float stof (const string& str, size_t* idx = 0); 456double stod (const string& str, size_t* idx = 0); 457long double stold(const string& str, size_t* idx = 0); 458 459string to_string(int val); 460string to_string(unsigned val); 461string to_string(long val); 462string to_string(unsigned long val); 463string to_string(long long val); 464string to_string(unsigned long long val); 465string to_string(float val); 466string to_string(double val); 467string to_string(long double val); 468 469int stoi (const wstring& str, size_t* idx = 0, int base = 10); 470long stol (const wstring& str, size_t* idx = 0, int base = 10); 471unsigned long stoul (const wstring& str, size_t* idx = 0, int base = 10); 472long long stoll (const wstring& str, size_t* idx = 0, int base = 10); 473unsigned long long stoull(const wstring& str, size_t* idx = 0, int base = 10); 474 475float stof (const wstring& str, size_t* idx = 0); 476double stod (const wstring& str, size_t* idx = 0); 477long double stold(const wstring& str, size_t* idx = 0); 478 479wstring to_wstring(int val); 480wstring to_wstring(unsigned val); 481wstring to_wstring(long val); 482wstring to_wstring(unsigned long val); 483wstring to_wstring(long long val); 484wstring to_wstring(unsigned long long val); 485wstring to_wstring(float val); 486wstring to_wstring(double val); 487wstring to_wstring(long double val); 488 489template <> struct hash<string>; 490template <> struct hash<u16string>; 491template <> struct hash<u32string>; 492template <> struct hash<wstring>; 493 494basic_string<char> operator "" s( const char *str, size_t len ); // C++14 495basic_string<wchar_t> operator "" s( const wchar_t *str, size_t len ); // C++14 496basic_string<char16_t> operator "" s( const char16_t *str, size_t len ); // C++14 497basic_string<char32_t> operator "" s( const char32_t *str, size_t len ); // C++14 498 499} // std 500 501*/ 502 503#include <__config> 504#include <string_view> 505#include <iosfwd> 506#include <cstring> 507#include <cstdio> // For EOF. 508#include <cwchar> 509#include <algorithm> 510#include <iterator> 511#include <utility> 512#include <memory> 513#include <stdexcept> 514#include <type_traits> 515#include <initializer_list> 516#include <__functional_base> 517#include <version> 518#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS 519#include <cstdint> 520#endif 521 522#include <__debug> 523 524#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 525#pragma GCC system_header 526#endif 527 528_LIBCPP_PUSH_MACROS 529#include <__undef_macros> 530 531 532_LIBCPP_BEGIN_NAMESPACE_STD 533 534// fpos 535 536template <class _StateT> 537class _LIBCPP_TEMPLATE_VIS fpos 538{ 539private: 540 _StateT __st_; 541 streamoff __off_; 542public: 543 _LIBCPP_INLINE_VISIBILITY fpos(streamoff __off = streamoff()) : __st_(), __off_(__off) {} 544 545 _LIBCPP_INLINE_VISIBILITY operator streamoff() const {return __off_;} 546 547 _LIBCPP_INLINE_VISIBILITY _StateT state() const {return __st_;} 548 _LIBCPP_INLINE_VISIBILITY void state(_StateT __st) {__st_ = __st;} 549 550 _LIBCPP_INLINE_VISIBILITY fpos& operator+=(streamoff __off) {__off_ += __off; return *this;} 551 _LIBCPP_INLINE_VISIBILITY fpos operator+ (streamoff __off) const {fpos __t(*this); __t += __off; return __t;} 552 _LIBCPP_INLINE_VISIBILITY fpos& operator-=(streamoff __off) {__off_ -= __off; return *this;} 553 _LIBCPP_INLINE_VISIBILITY fpos operator- (streamoff __off) const {fpos __t(*this); __t -= __off; return __t;} 554}; 555 556template <class _StateT> 557inline _LIBCPP_INLINE_VISIBILITY 558streamoff operator-(const fpos<_StateT>& __x, const fpos<_StateT>& __y) 559 {return streamoff(__x) - streamoff(__y);} 560 561template <class _StateT> 562inline _LIBCPP_INLINE_VISIBILITY 563bool operator==(const fpos<_StateT>& __x, const fpos<_StateT>& __y) 564 {return streamoff(__x) == streamoff(__y);} 565 566template <class _StateT> 567inline _LIBCPP_INLINE_VISIBILITY 568bool operator!=(const fpos<_StateT>& __x, const fpos<_StateT>& __y) 569 {return streamoff(__x) != streamoff(__y);} 570 571// basic_string 572 573template<class _CharT, class _Traits, class _Allocator> 574basic_string<_CharT, _Traits, _Allocator> 575operator+(const basic_string<_CharT, _Traits, _Allocator>& __x, 576 const basic_string<_CharT, _Traits, _Allocator>& __y); 577 578template<class _CharT, class _Traits, class _Allocator> 579basic_string<_CharT, _Traits, _Allocator> 580operator+(const _CharT* __x, const basic_string<_CharT,_Traits,_Allocator>& __y); 581 582template<class _CharT, class _Traits, class _Allocator> 583basic_string<_CharT, _Traits, _Allocator> 584operator+(_CharT __x, const basic_string<_CharT,_Traits,_Allocator>& __y); 585 586template<class _CharT, class _Traits, class _Allocator> 587inline _LIBCPP_INLINE_VISIBILITY 588basic_string<_CharT, _Traits, _Allocator> 589operator+(const basic_string<_CharT, _Traits, _Allocator>& __x, const _CharT* __y); 590 591template<class _CharT, class _Traits, class _Allocator> 592basic_string<_CharT, _Traits, _Allocator> 593operator+(const basic_string<_CharT, _Traits, _Allocator>& __x, _CharT __y); 594 595_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS string operator+<char, char_traits<char>, allocator<char> >(char const*, string const&)) 596 597template <bool> 598class _LIBCPP_TEMPLATE_VIS __basic_string_common 599{ 600protected: 601 _LIBCPP_NORETURN void __throw_length_error() const; 602 _LIBCPP_NORETURN void __throw_out_of_range() const; 603}; 604 605template <bool __b> 606void 607__basic_string_common<__b>::__throw_length_error() const 608{ 609 _VSTD::__throw_length_error("basic_string"); 610} 611 612template <bool __b> 613void 614__basic_string_common<__b>::__throw_out_of_range() const 615{ 616 _VSTD::__throw_out_of_range("basic_string"); 617} 618 619_LIBCPP_EXTERN_TEMPLATE(class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS __basic_string_common<true>) 620 621#ifdef _LIBCPP_NO_EXCEPTIONS 622template <class _Iter> 623struct __libcpp_string_gets_noexcept_iterator_impl : public true_type {}; 624#elif defined(_LIBCPP_HAS_NO_NOEXCEPT) 625template <class _Iter> 626struct __libcpp_string_gets_noexcept_iterator_impl : public false_type {}; 627#else 628template <class _Iter, bool = __is_cpp17_forward_iterator<_Iter>::value> 629struct __libcpp_string_gets_noexcept_iterator_impl : public _LIBCPP_BOOL_CONSTANT(( 630 noexcept(++(declval<_Iter&>())) && 631 is_nothrow_assignable<_Iter&, _Iter>::value && 632 noexcept(declval<_Iter>() == declval<_Iter>()) && 633 noexcept(*declval<_Iter>()) 634)) {}; 635 636template <class _Iter> 637struct __libcpp_string_gets_noexcept_iterator_impl<_Iter, false> : public false_type {}; 638#endif 639 640 641template <class _Iter> 642struct __libcpp_string_gets_noexcept_iterator 643 : public _LIBCPP_BOOL_CONSTANT(__libcpp_is_trivial_iterator<_Iter>::value || __libcpp_string_gets_noexcept_iterator_impl<_Iter>::value) {}; 644 645template <class _CharT, class _Traits, class _Tp> 646struct __can_be_converted_to_string_view : public _LIBCPP_BOOL_CONSTANT( 647 ( is_convertible<const _Tp&, basic_string_view<_CharT, _Traits> >::value && 648 !is_convertible<const _Tp&, const _CharT*>::value)) {}; 649 650#ifdef _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT 651 652template <class _CharT, size_t = sizeof(_CharT)> 653struct __padding 654{ 655 unsigned char __xx[sizeof(_CharT)-1]; 656}; 657 658template <class _CharT> 659struct __padding<_CharT, 1> 660{ 661}; 662 663#endif // _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT 664 665template<class _CharT, class _Traits, class _Allocator> 666class _LIBCPP_TEMPLATE_VIS basic_string 667 : private __basic_string_common<true> 668{ 669public: 670 typedef basic_string __self; 671 typedef basic_string_view<_CharT, _Traits> __self_view; 672 typedef _Traits traits_type; 673 typedef _CharT value_type; 674 typedef _Allocator allocator_type; 675 typedef allocator_traits<allocator_type> __alloc_traits; 676 typedef typename __alloc_traits::size_type size_type; 677 typedef typename __alloc_traits::difference_type difference_type; 678 typedef value_type& reference; 679 typedef const value_type& const_reference; 680 typedef typename __alloc_traits::pointer pointer; 681 typedef typename __alloc_traits::const_pointer const_pointer; 682 683 static_assert((!is_array<value_type>::value), "Character type of basic_string must not be an array"); 684 static_assert(( is_standard_layout<value_type>::value), "Character type of basic_string must be standard-layout"); 685 static_assert(( is_trivial<value_type>::value), "Character type of basic_string must be trivial"); 686 static_assert(( is_same<_CharT, typename traits_type::char_type>::value), 687 "traits_type::char_type must be the same type as CharT"); 688 static_assert(( is_same<typename allocator_type::value_type, value_type>::value), 689 "Allocator::value_type must be same type as value_type"); 690 691#if defined(_LIBCPP_RAW_ITERATORS) 692 typedef pointer iterator; 693 typedef const_pointer const_iterator; 694#else // defined(_LIBCPP_RAW_ITERATORS) 695 typedef __wrap_iter<pointer> iterator; 696 typedef __wrap_iter<const_pointer> const_iterator; 697#endif // defined(_LIBCPP_RAW_ITERATORS) 698 typedef _VSTD::reverse_iterator<iterator> reverse_iterator; 699 typedef _VSTD::reverse_iterator<const_iterator> const_reverse_iterator; 700 701private: 702 703#ifdef _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT 704 705 struct __long 706 { 707 pointer __data_; 708 size_type __size_; 709 size_type __cap_; 710 }; 711 712#ifdef _LIBCPP_BIG_ENDIAN 713 static const size_type __short_mask = 0x01; 714 static const size_type __long_mask = 0x1ul; 715#else // _LIBCPP_BIG_ENDIAN 716 static const size_type __short_mask = 0x80; 717 static const size_type __long_mask = ~(size_type(~0) >> 1); 718#endif // _LIBCPP_BIG_ENDIAN 719 720 enum {__min_cap = (sizeof(__long) - 1)/sizeof(value_type) > 2 ? 721 (sizeof(__long) - 1)/sizeof(value_type) : 2}; 722 723 struct __short 724 { 725 value_type __data_[__min_cap]; 726 struct 727 : __padding<value_type> 728 { 729 unsigned char __size_; 730 }; 731 }; 732 733#else 734 735 struct __long 736 { 737 size_type __cap_; 738 size_type __size_; 739 pointer __data_; 740 }; 741 742#ifdef _LIBCPP_BIG_ENDIAN 743 static const size_type __short_mask = 0x80; 744 static const size_type __long_mask = ~(size_type(~0) >> 1); 745#else // _LIBCPP_BIG_ENDIAN 746 static const size_type __short_mask = 0x01; 747 static const size_type __long_mask = 0x1ul; 748#endif // _LIBCPP_BIG_ENDIAN 749 750 enum {__min_cap = (sizeof(__long) - 1)/sizeof(value_type) > 2 ? 751 (sizeof(__long) - 1)/sizeof(value_type) : 2}; 752 753 struct __short 754 { 755 union 756 { 757 unsigned char __size_; 758 value_type __lx; 759 }; 760 value_type __data_[__min_cap]; 761 }; 762 763#endif // _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT 764 765 union __ulx{__long __lx; __short __lxx;}; 766 767 enum {__n_words = sizeof(__ulx) / sizeof(size_type)}; 768 769 struct __raw 770 { 771 size_type __words[__n_words]; 772 }; 773 774 struct __rep 775 { 776 union 777 { 778 __long __l; 779 __short __s; 780 __raw __r; 781 }; 782 }; 783 784 __compressed_pair<__rep, allocator_type> __r_; 785 786public: 787 static const size_type npos = -1; 788 789 _LIBCPP_INLINE_VISIBILITY basic_string() 790 _NOEXCEPT_(is_nothrow_default_constructible<allocator_type>::value); 791 792 _LIBCPP_INLINE_VISIBILITY explicit basic_string(const allocator_type& __a) 793#if _LIBCPP_STD_VER <= 14 794 _NOEXCEPT_(is_nothrow_copy_constructible<allocator_type>::value); 795#else 796 _NOEXCEPT; 797#endif 798 799 basic_string(const basic_string& __str); 800 basic_string(const basic_string& __str, const allocator_type& __a); 801 802#ifndef _LIBCPP_CXX03_LANG 803 _LIBCPP_INLINE_VISIBILITY 804 basic_string(basic_string&& __str) 805#if _LIBCPP_STD_VER <= 14 806 _NOEXCEPT_(is_nothrow_move_constructible<allocator_type>::value); 807#else 808 _NOEXCEPT; 809#endif 810 811 _LIBCPP_INLINE_VISIBILITY 812 basic_string(basic_string&& __str, const allocator_type& __a); 813#endif // _LIBCPP_CXX03_LANG 814 815 template <class = typename enable_if<__is_allocator<_Allocator>::value, nullptr_t>::type> 816 _LIBCPP_INLINE_VISIBILITY 817 basic_string(const _CharT* __s) { 818 _LIBCPP_ASSERT(__s != nullptr, "basic_string(const char*) detected nullptr"); 819 __init(__s, traits_type::length(__s)); 820# if _LIBCPP_DEBUG_LEVEL >= 2 821 __get_db()->__insert_c(this); 822# endif 823 } 824 825 template <class = typename enable_if<__is_allocator<_Allocator>::value, nullptr_t>::type> 826 _LIBCPP_INLINE_VISIBILITY 827 basic_string(const _CharT* __s, const _Allocator& __a); 828 829 _LIBCPP_INLINE_VISIBILITY 830 basic_string(const _CharT* __s, size_type __n); 831 _LIBCPP_INLINE_VISIBILITY 832 basic_string(const _CharT* __s, size_type __n, const _Allocator& __a); 833 _LIBCPP_INLINE_VISIBILITY 834 basic_string(size_type __n, _CharT __c); 835 836 template <class = typename enable_if<__is_allocator<_Allocator>::value, nullptr_t>::type> 837 _LIBCPP_INLINE_VISIBILITY 838 basic_string(size_type __n, _CharT __c, const _Allocator& __a); 839 840 basic_string(const basic_string& __str, size_type __pos, size_type __n, 841 const _Allocator& __a = _Allocator()); 842 _LIBCPP_INLINE_VISIBILITY 843 basic_string(const basic_string& __str, size_type __pos, 844 const _Allocator& __a = _Allocator()); 845 846 template<class _Tp, class = typename enable_if<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, void>::type> 847 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 848 basic_string(const _Tp& __t, size_type __pos, size_type __n, 849 const allocator_type& __a = allocator_type()); 850 851 template<class _Tp, class = typename enable_if<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, void>::type> 852 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 853 explicit basic_string(const _Tp& __t); 854 855 template<class _Tp, class = typename enable_if<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, void>::type> 856 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 857 explicit basic_string(const _Tp& __t, const allocator_type& __a); 858 859 template<class _InputIterator, class = typename enable_if<__is_cpp17_input_iterator<_InputIterator>::value>::type> 860 _LIBCPP_INLINE_VISIBILITY 861 basic_string(_InputIterator __first, _InputIterator __last); 862 template<class _InputIterator, class = typename enable_if<__is_cpp17_input_iterator<_InputIterator>::value>::type> 863 _LIBCPP_INLINE_VISIBILITY 864 basic_string(_InputIterator __first, _InputIterator __last, const allocator_type& __a); 865#ifndef _LIBCPP_CXX03_LANG 866 _LIBCPP_INLINE_VISIBILITY 867 basic_string(initializer_list<_CharT> __il); 868 _LIBCPP_INLINE_VISIBILITY 869 basic_string(initializer_list<_CharT> __il, const _Allocator& __a); 870#endif // _LIBCPP_CXX03_LANG 871 872 inline ~basic_string(); 873 874 _LIBCPP_INLINE_VISIBILITY 875 operator __self_view() const _NOEXCEPT { return __self_view(data(), size()); } 876 877 basic_string& operator=(const basic_string& __str); 878 879 template <class _Tp, class = typename enable_if<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, void>::type> 880 basic_string& operator=(const _Tp& __t) 881 {__self_view __sv = __t; return assign(__sv);} 882 883#ifndef _LIBCPP_CXX03_LANG 884 _LIBCPP_INLINE_VISIBILITY 885 basic_string& operator=(basic_string&& __str) 886 _NOEXCEPT_((__noexcept_move_assign_container<_Allocator, __alloc_traits>::value)); 887 _LIBCPP_INLINE_VISIBILITY 888 basic_string& operator=(initializer_list<value_type> __il) {return assign(__il.begin(), __il.size());} 889#endif 890 _LIBCPP_INLINE_VISIBILITY basic_string& operator=(const value_type* __s) {return assign(__s);} 891 basic_string& operator=(value_type __c); 892 893#if _LIBCPP_DEBUG_LEVEL >= 2 894 _LIBCPP_INLINE_VISIBILITY 895 iterator begin() _NOEXCEPT 896 {return iterator(this, __get_pointer());} 897 _LIBCPP_INLINE_VISIBILITY 898 const_iterator begin() const _NOEXCEPT 899 {return const_iterator(this, __get_pointer());} 900 _LIBCPP_INLINE_VISIBILITY 901 iterator end() _NOEXCEPT 902 {return iterator(this, __get_pointer() + size());} 903 _LIBCPP_INLINE_VISIBILITY 904 const_iterator end() const _NOEXCEPT 905 {return const_iterator(this, __get_pointer() + size());} 906#else 907 _LIBCPP_INLINE_VISIBILITY 908 iterator begin() _NOEXCEPT 909 {return iterator(__get_pointer());} 910 _LIBCPP_INLINE_VISIBILITY 911 const_iterator begin() const _NOEXCEPT 912 {return const_iterator(__get_pointer());} 913 _LIBCPP_INLINE_VISIBILITY 914 iterator end() _NOEXCEPT 915 {return iterator(__get_pointer() + size());} 916 _LIBCPP_INLINE_VISIBILITY 917 const_iterator end() const _NOEXCEPT 918 {return const_iterator(__get_pointer() + size());} 919#endif // _LIBCPP_DEBUG_LEVEL >= 2 920 _LIBCPP_INLINE_VISIBILITY 921 reverse_iterator rbegin() _NOEXCEPT 922 {return reverse_iterator(end());} 923 _LIBCPP_INLINE_VISIBILITY 924 const_reverse_iterator rbegin() const _NOEXCEPT 925 {return const_reverse_iterator(end());} 926 _LIBCPP_INLINE_VISIBILITY 927 reverse_iterator rend() _NOEXCEPT 928 {return reverse_iterator(begin());} 929 _LIBCPP_INLINE_VISIBILITY 930 const_reverse_iterator rend() const _NOEXCEPT 931 {return const_reverse_iterator(begin());} 932 933 _LIBCPP_INLINE_VISIBILITY 934 const_iterator cbegin() const _NOEXCEPT 935 {return begin();} 936 _LIBCPP_INLINE_VISIBILITY 937 const_iterator cend() const _NOEXCEPT 938 {return end();} 939 _LIBCPP_INLINE_VISIBILITY 940 const_reverse_iterator crbegin() const _NOEXCEPT 941 {return rbegin();} 942 _LIBCPP_INLINE_VISIBILITY 943 const_reverse_iterator crend() const _NOEXCEPT 944 {return rend();} 945 946 _LIBCPP_INLINE_VISIBILITY size_type size() const _NOEXCEPT 947 {return __is_long() ? __get_long_size() : __get_short_size();} 948 _LIBCPP_INLINE_VISIBILITY size_type length() const _NOEXCEPT {return size();} 949 _LIBCPP_INLINE_VISIBILITY size_type max_size() const _NOEXCEPT; 950 _LIBCPP_INLINE_VISIBILITY size_type capacity() const _NOEXCEPT 951 {return (__is_long() ? __get_long_cap() 952 : static_cast<size_type>(__min_cap)) - 1;} 953 954 void resize(size_type __n, value_type __c); 955 _LIBCPP_INLINE_VISIBILITY void resize(size_type __n) {resize(__n, value_type());} 956 957 void reserve(size_type __res_arg); 958 _LIBCPP_INLINE_VISIBILITY void __resize_default_init(size_type __n); 959 960 _LIBCPP_INLINE_VISIBILITY 961 void reserve() _NOEXCEPT {reserve(0);} 962 _LIBCPP_INLINE_VISIBILITY 963 void shrink_to_fit() _NOEXCEPT {reserve();} 964 _LIBCPP_INLINE_VISIBILITY 965 void clear() _NOEXCEPT; 966 _LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY 967 bool empty() const _NOEXCEPT {return size() == 0;} 968 969 _LIBCPP_INLINE_VISIBILITY const_reference operator[](size_type __pos) const _NOEXCEPT; 970 _LIBCPP_INLINE_VISIBILITY reference operator[](size_type __pos) _NOEXCEPT; 971 972 const_reference at(size_type __n) const; 973 reference at(size_type __n); 974 975 _LIBCPP_INLINE_VISIBILITY basic_string& operator+=(const basic_string& __str) {return append(__str);} 976 977 template <class _Tp> 978 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 979 typename enable_if 980 < 981 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 982 basic_string& 983 >::type 984 operator+=(const _Tp& __t) {__self_view __sv = __t; return append(__sv);} 985 _LIBCPP_INLINE_VISIBILITY basic_string& operator+=(const value_type* __s) {return append(__s);} 986 _LIBCPP_INLINE_VISIBILITY basic_string& operator+=(value_type __c) {push_back(__c); return *this;} 987#ifndef _LIBCPP_CXX03_LANG 988 _LIBCPP_INLINE_VISIBILITY basic_string& operator+=(initializer_list<value_type> __il) {return append(__il);} 989#endif // _LIBCPP_CXX03_LANG 990 991 _LIBCPP_INLINE_VISIBILITY 992 basic_string& append(const basic_string& __str); 993 994 template <class _Tp> 995 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 996 typename enable_if 997 < 998 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 999 basic_string& 1000 >::type 1001 append(const _Tp& __t) { __self_view __sv = __t; return append(__sv.data(), __sv.size()); } 1002 basic_string& append(const basic_string& __str, size_type __pos, size_type __n=npos); 1003 1004 template <class _Tp> 1005 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1006 typename enable_if 1007 < 1008 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1009 basic_string& 1010 >::type 1011 append(const _Tp& __t, size_type __pos, size_type __n=npos); 1012 basic_string& append(const value_type* __s, size_type __n); 1013 basic_string& append(const value_type* __s); 1014 basic_string& append(size_type __n, value_type __c); 1015 1016 _LIBCPP_INLINE_VISIBILITY 1017 void __append_default_init(size_type __n); 1018 1019 template <class _ForwardIterator> 1020 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1021 basic_string& __append_forward_unsafe(_ForwardIterator, _ForwardIterator); 1022 template<class _InputIterator> 1023 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1024 typename enable_if 1025 < 1026 __is_exactly_cpp17_input_iterator<_InputIterator>::value 1027 || !__libcpp_string_gets_noexcept_iterator<_InputIterator>::value, 1028 basic_string& 1029 >::type 1030 _LIBCPP_INLINE_VISIBILITY 1031 append(_InputIterator __first, _InputIterator __last) { 1032 const basic_string __temp (__first, __last, __alloc()); 1033 append(__temp.data(), __temp.size()); 1034 return *this; 1035 } 1036 template<class _ForwardIterator> 1037 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1038 typename enable_if 1039 < 1040 __is_cpp17_forward_iterator<_ForwardIterator>::value 1041 && __libcpp_string_gets_noexcept_iterator<_ForwardIterator>::value, 1042 basic_string& 1043 >::type 1044 _LIBCPP_INLINE_VISIBILITY 1045 append(_ForwardIterator __first, _ForwardIterator __last) { 1046 return __append_forward_unsafe(__first, __last); 1047 } 1048 1049#ifndef _LIBCPP_CXX03_LANG 1050 _LIBCPP_INLINE_VISIBILITY 1051 basic_string& append(initializer_list<value_type> __il) {return append(__il.begin(), __il.size());} 1052#endif // _LIBCPP_CXX03_LANG 1053 1054 void push_back(value_type __c); 1055 _LIBCPP_INLINE_VISIBILITY 1056 void pop_back(); 1057 _LIBCPP_INLINE_VISIBILITY reference front() _NOEXCEPT; 1058 _LIBCPP_INLINE_VISIBILITY const_reference front() const _NOEXCEPT; 1059 _LIBCPP_INLINE_VISIBILITY reference back() _NOEXCEPT; 1060 _LIBCPP_INLINE_VISIBILITY const_reference back() const _NOEXCEPT; 1061 1062 template <class _Tp> 1063 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1064 typename enable_if 1065 < 1066 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1067 basic_string& 1068 >::type 1069 assign(const _Tp & __t) { __self_view __sv = __t; return assign(__sv.data(), __sv.size()); } 1070 _LIBCPP_INLINE_VISIBILITY 1071 basic_string& assign(const basic_string& __str) { return *this = __str; } 1072#ifndef _LIBCPP_CXX03_LANG 1073 _LIBCPP_INLINE_VISIBILITY 1074 basic_string& assign(basic_string&& __str) 1075 _NOEXCEPT_((__noexcept_move_assign_container<_Allocator, __alloc_traits>::value)) 1076 {*this = _VSTD::move(__str); return *this;} 1077#endif 1078 basic_string& assign(const basic_string& __str, size_type __pos, size_type __n=npos); 1079 template <class _Tp> 1080 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1081 typename enable_if 1082 < 1083 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1084 basic_string& 1085 >::type 1086 assign(const _Tp & __t, size_type __pos, size_type __n=npos); 1087 basic_string& assign(const value_type* __s, size_type __n); 1088 basic_string& assign(const value_type* __s); 1089 basic_string& assign(size_type __n, value_type __c); 1090 template<class _InputIterator> 1091 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1092 typename enable_if 1093 < 1094 __is_exactly_cpp17_input_iterator<_InputIterator>::value 1095 || !__libcpp_string_gets_noexcept_iterator<_InputIterator>::value, 1096 basic_string& 1097 >::type 1098 assign(_InputIterator __first, _InputIterator __last); 1099 template<class _ForwardIterator> 1100 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1101 typename enable_if 1102 < 1103 __is_cpp17_forward_iterator<_ForwardIterator>::value 1104 && __libcpp_string_gets_noexcept_iterator<_ForwardIterator>::value, 1105 basic_string& 1106 >::type 1107 assign(_ForwardIterator __first, _ForwardIterator __last); 1108#ifndef _LIBCPP_CXX03_LANG 1109 _LIBCPP_INLINE_VISIBILITY 1110 basic_string& assign(initializer_list<value_type> __il) {return assign(__il.begin(), __il.size());} 1111#endif // _LIBCPP_CXX03_LANG 1112 1113 _LIBCPP_INLINE_VISIBILITY 1114 basic_string& insert(size_type __pos1, const basic_string& __str); 1115 1116 template <class _Tp> 1117 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1118 typename enable_if 1119 < 1120 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1121 basic_string& 1122 >::type 1123 insert(size_type __pos1, const _Tp& __t) 1124 { __self_view __sv = __t; return insert(__pos1, __sv.data(), __sv.size()); } 1125 1126 template <class _Tp> 1127 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1128 typename enable_if 1129 < 1130 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1131 basic_string& 1132 >::type 1133 insert(size_type __pos1, const _Tp& __t, size_type __pos2, size_type __n=npos); 1134 basic_string& insert(size_type __pos1, const basic_string& __str, size_type __pos2, size_type __n=npos); 1135 basic_string& insert(size_type __pos, const value_type* __s, size_type __n); 1136 basic_string& insert(size_type __pos, const value_type* __s); 1137 basic_string& insert(size_type __pos, size_type __n, value_type __c); 1138 iterator insert(const_iterator __pos, value_type __c); 1139 _LIBCPP_INLINE_VISIBILITY 1140 iterator insert(const_iterator __pos, size_type __n, value_type __c); 1141 template<class _InputIterator> 1142 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1143 typename enable_if 1144 < 1145 __is_exactly_cpp17_input_iterator<_InputIterator>::value 1146 || !__libcpp_string_gets_noexcept_iterator<_InputIterator>::value, 1147 iterator 1148 >::type 1149 insert(const_iterator __pos, _InputIterator __first, _InputIterator __last); 1150 template<class _ForwardIterator> 1151 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1152 typename enable_if 1153 < 1154 __is_cpp17_forward_iterator<_ForwardIterator>::value 1155 && __libcpp_string_gets_noexcept_iterator<_ForwardIterator>::value, 1156 iterator 1157 >::type 1158 insert(const_iterator __pos, _ForwardIterator __first, _ForwardIterator __last); 1159#ifndef _LIBCPP_CXX03_LANG 1160 _LIBCPP_INLINE_VISIBILITY 1161 iterator insert(const_iterator __pos, initializer_list<value_type> __il) 1162 {return insert(__pos, __il.begin(), __il.end());} 1163#endif // _LIBCPP_CXX03_LANG 1164 1165 basic_string& erase(size_type __pos = 0, size_type __n = npos); 1166 _LIBCPP_INLINE_VISIBILITY 1167 iterator erase(const_iterator __pos); 1168 _LIBCPP_INLINE_VISIBILITY 1169 iterator erase(const_iterator __first, const_iterator __last); 1170 1171 _LIBCPP_INLINE_VISIBILITY 1172 basic_string& replace(size_type __pos1, size_type __n1, const basic_string& __str); 1173 1174 template <class _Tp> 1175 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1176 typename enable_if 1177 < 1178 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1179 basic_string& 1180 >::type 1181 replace(size_type __pos1, size_type __n1, const _Tp& __t) { __self_view __sv = __t; return replace(__pos1, __n1, __sv.data(), __sv.size()); } 1182 basic_string& replace(size_type __pos1, size_type __n1, const basic_string& __str, size_type __pos2, size_type __n2=npos); 1183 template <class _Tp> 1184 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1185 typename enable_if 1186 < 1187 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1188 basic_string& 1189 >::type 1190 replace(size_type __pos1, size_type __n1, const _Tp& __t, size_type __pos2, size_type __n2=npos); 1191 basic_string& replace(size_type __pos, size_type __n1, const value_type* __s, size_type __n2); 1192 basic_string& replace(size_type __pos, size_type __n1, const value_type* __s); 1193 basic_string& replace(size_type __pos, size_type __n1, size_type __n2, value_type __c); 1194 _LIBCPP_INLINE_VISIBILITY 1195 basic_string& replace(const_iterator __i1, const_iterator __i2, const basic_string& __str); 1196 1197 template <class _Tp> 1198 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1199 typename enable_if 1200 < 1201 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1202 basic_string& 1203 >::type 1204 replace(const_iterator __i1, const_iterator __i2, const _Tp& __t) { __self_view __sv = __t; return replace(__i1 - begin(), __i2 - __i1, __sv); } 1205 1206 _LIBCPP_INLINE_VISIBILITY 1207 basic_string& replace(const_iterator __i1, const_iterator __i2, const value_type* __s, size_type __n); 1208 _LIBCPP_INLINE_VISIBILITY 1209 basic_string& replace(const_iterator __i1, const_iterator __i2, const value_type* __s); 1210 _LIBCPP_INLINE_VISIBILITY 1211 basic_string& replace(const_iterator __i1, const_iterator __i2, size_type __n, value_type __c); 1212 template<class _InputIterator> 1213 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1214 typename enable_if 1215 < 1216 __is_cpp17_input_iterator<_InputIterator>::value, 1217 basic_string& 1218 >::type 1219 replace(const_iterator __i1, const_iterator __i2, _InputIterator __j1, _InputIterator __j2); 1220#ifndef _LIBCPP_CXX03_LANG 1221 _LIBCPP_INLINE_VISIBILITY 1222 basic_string& replace(const_iterator __i1, const_iterator __i2, initializer_list<value_type> __il) 1223 {return replace(__i1, __i2, __il.begin(), __il.end());} 1224#endif // _LIBCPP_CXX03_LANG 1225 1226 size_type copy(value_type* __s, size_type __n, size_type __pos = 0) const; 1227 _LIBCPP_INLINE_VISIBILITY 1228 basic_string substr(size_type __pos = 0, size_type __n = npos) const; 1229 1230 _LIBCPP_INLINE_VISIBILITY 1231 void swap(basic_string& __str) 1232#if _LIBCPP_STD_VER >= 14 1233 _NOEXCEPT; 1234#else 1235 _NOEXCEPT_(!__alloc_traits::propagate_on_container_swap::value || 1236 __is_nothrow_swappable<allocator_type>::value); 1237#endif 1238 1239 _LIBCPP_INLINE_VISIBILITY 1240 const value_type* c_str() const _NOEXCEPT {return data();} 1241 _LIBCPP_INLINE_VISIBILITY 1242 const value_type* data() const _NOEXCEPT {return _VSTD::__to_address(__get_pointer());} 1243#if _LIBCPP_STD_VER > 14 || defined(_LIBCPP_BUILDING_LIBRARY) 1244 _LIBCPP_INLINE_VISIBILITY 1245 value_type* data() _NOEXCEPT {return _VSTD::__to_address(__get_pointer());} 1246#endif 1247 1248 _LIBCPP_INLINE_VISIBILITY 1249 allocator_type get_allocator() const _NOEXCEPT {return __alloc();} 1250 1251 _LIBCPP_INLINE_VISIBILITY 1252 size_type find(const basic_string& __str, size_type __pos = 0) const _NOEXCEPT; 1253 1254 template <class _Tp> 1255 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1256 typename enable_if 1257 < 1258 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1259 size_type 1260 >::type 1261 find(const _Tp& __t, size_type __pos = 0) const; 1262 size_type find(const value_type* __s, size_type __pos, size_type __n) const _NOEXCEPT; 1263 _LIBCPP_INLINE_VISIBILITY 1264 size_type find(const value_type* __s, size_type __pos = 0) const _NOEXCEPT; 1265 size_type find(value_type __c, size_type __pos = 0) const _NOEXCEPT; 1266 1267 _LIBCPP_INLINE_VISIBILITY 1268 size_type rfind(const basic_string& __str, size_type __pos = npos) const _NOEXCEPT; 1269 1270 template <class _Tp> 1271 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1272 typename enable_if 1273 < 1274 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1275 size_type 1276 >::type 1277 rfind(const _Tp& __t, size_type __pos = npos) const; 1278 size_type rfind(const value_type* __s, size_type __pos, size_type __n) const _NOEXCEPT; 1279 _LIBCPP_INLINE_VISIBILITY 1280 size_type rfind(const value_type* __s, size_type __pos = npos) const _NOEXCEPT; 1281 size_type rfind(value_type __c, size_type __pos = npos) const _NOEXCEPT; 1282 1283 _LIBCPP_INLINE_VISIBILITY 1284 size_type find_first_of(const basic_string& __str, size_type __pos = 0) const _NOEXCEPT; 1285 1286 template <class _Tp> 1287 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1288 typename enable_if 1289 < 1290 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1291 size_type 1292 >::type 1293 find_first_of(const _Tp& __t, size_type __pos = 0) const; 1294 size_type find_first_of(const value_type* __s, size_type __pos, size_type __n) const _NOEXCEPT; 1295 _LIBCPP_INLINE_VISIBILITY 1296 size_type find_first_of(const value_type* __s, size_type __pos = 0) const _NOEXCEPT; 1297 _LIBCPP_INLINE_VISIBILITY 1298 size_type find_first_of(value_type __c, size_type __pos = 0) const _NOEXCEPT; 1299 1300 _LIBCPP_INLINE_VISIBILITY 1301 size_type find_last_of(const basic_string& __str, size_type __pos = npos) const _NOEXCEPT; 1302 1303 template <class _Tp> 1304 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1305 typename enable_if 1306 < 1307 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1308 size_type 1309 >::type 1310 find_last_of(const _Tp& __t, size_type __pos = npos) const; 1311 size_type find_last_of(const value_type* __s, size_type __pos, size_type __n) const _NOEXCEPT; 1312 _LIBCPP_INLINE_VISIBILITY 1313 size_type find_last_of(const value_type* __s, size_type __pos = npos) const _NOEXCEPT; 1314 _LIBCPP_INLINE_VISIBILITY 1315 size_type find_last_of(value_type __c, size_type __pos = npos) const _NOEXCEPT; 1316 1317 _LIBCPP_INLINE_VISIBILITY 1318 size_type find_first_not_of(const basic_string& __str, size_type __pos = 0) const _NOEXCEPT; 1319 1320 template <class _Tp> 1321 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1322 typename enable_if 1323 < 1324 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1325 size_type 1326 >::type 1327 find_first_not_of(const _Tp &__t, size_type __pos = 0) const; 1328 size_type find_first_not_of(const value_type* __s, size_type __pos, size_type __n) const _NOEXCEPT; 1329 _LIBCPP_INLINE_VISIBILITY 1330 size_type find_first_not_of(const value_type* __s, size_type __pos = 0) const _NOEXCEPT; 1331 _LIBCPP_INLINE_VISIBILITY 1332 size_type find_first_not_of(value_type __c, size_type __pos = 0) const _NOEXCEPT; 1333 1334 _LIBCPP_INLINE_VISIBILITY 1335 size_type find_last_not_of(const basic_string& __str, size_type __pos = npos) const _NOEXCEPT; 1336 1337 template <class _Tp> 1338 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1339 typename enable_if 1340 < 1341 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1342 size_type 1343 >::type 1344 find_last_not_of(const _Tp& __t, size_type __pos = npos) const; 1345 size_type find_last_not_of(const value_type* __s, size_type __pos, size_type __n) const _NOEXCEPT; 1346 _LIBCPP_INLINE_VISIBILITY 1347 size_type find_last_not_of(const value_type* __s, size_type __pos = npos) const _NOEXCEPT; 1348 _LIBCPP_INLINE_VISIBILITY 1349 size_type find_last_not_of(value_type __c, size_type __pos = npos) const _NOEXCEPT; 1350 1351 _LIBCPP_INLINE_VISIBILITY 1352 int compare(const basic_string& __str) const _NOEXCEPT; 1353 1354 template <class _Tp> 1355 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1356 typename enable_if 1357 < 1358 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1359 int 1360 >::type 1361 compare(const _Tp &__t) const; 1362 1363 template <class _Tp> 1364 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1365 typename enable_if 1366 < 1367 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1368 int 1369 >::type 1370 compare(size_type __pos1, size_type __n1, const _Tp& __t) const; 1371 1372 _LIBCPP_INLINE_VISIBILITY 1373 int compare(size_type __pos1, size_type __n1, const basic_string& __str) const; 1374 int compare(size_type __pos1, size_type __n1, const basic_string& __str, size_type __pos2, size_type __n2=npos) const; 1375 1376 template <class _Tp> 1377 inline _LIBCPP_INLINE_VISIBILITY 1378 typename enable_if 1379 < 1380 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1381 int 1382 >::type 1383 compare(size_type __pos1, size_type __n1, const _Tp& __t, size_type __pos2, size_type __n2=npos) const; 1384 int compare(const value_type* __s) const _NOEXCEPT; 1385 int compare(size_type __pos1, size_type __n1, const value_type* __s) const; 1386 int compare(size_type __pos1, size_type __n1, const value_type* __s, size_type __n2) const; 1387 1388#if _LIBCPP_STD_VER > 17 1389 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 1390 bool starts_with(__self_view __sv) const _NOEXCEPT 1391 { return __self_view(data(), size()).starts_with(__sv); } 1392 1393 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 1394 bool starts_with(value_type __c) const _NOEXCEPT 1395 { return !empty() && _Traits::eq(front(), __c); } 1396 1397 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 1398 bool starts_with(const value_type* __s) const _NOEXCEPT 1399 { return starts_with(__self_view(__s)); } 1400 1401 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 1402 bool ends_with(__self_view __sv) const _NOEXCEPT 1403 { return __self_view(data(), size()).ends_with( __sv); } 1404 1405 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 1406 bool ends_with(value_type __c) const _NOEXCEPT 1407 { return !empty() && _Traits::eq(back(), __c); } 1408 1409 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 1410 bool ends_with(const value_type* __s) const _NOEXCEPT 1411 { return ends_with(__self_view(__s)); } 1412#endif 1413 1414 _LIBCPP_INLINE_VISIBILITY bool __invariants() const; 1415 1416 _LIBCPP_INLINE_VISIBILITY void __clear_and_shrink() _NOEXCEPT; 1417 1418 _LIBCPP_INLINE_VISIBILITY 1419 bool __is_long() const _NOEXCEPT 1420 {return bool(__r_.first().__s.__size_ & __short_mask);} 1421 1422#if _LIBCPP_DEBUG_LEVEL >= 2 1423 1424 bool __dereferenceable(const const_iterator* __i) const; 1425 bool __decrementable(const const_iterator* __i) const; 1426 bool __addable(const const_iterator* __i, ptrdiff_t __n) const; 1427 bool __subscriptable(const const_iterator* __i, ptrdiff_t __n) const; 1428 1429#endif // _LIBCPP_DEBUG_LEVEL >= 2 1430 1431private: 1432 _LIBCPP_INLINE_VISIBILITY 1433 allocator_type& __alloc() _NOEXCEPT 1434 {return __r_.second();} 1435 _LIBCPP_INLINE_VISIBILITY 1436 const allocator_type& __alloc() const _NOEXCEPT 1437 {return __r_.second();} 1438 1439#ifdef _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT 1440 1441 _LIBCPP_INLINE_VISIBILITY 1442 void __set_short_size(size_type __s) _NOEXCEPT 1443# ifdef _LIBCPP_BIG_ENDIAN 1444 {__r_.first().__s.__size_ = (unsigned char)(__s << 1);} 1445# else 1446 {__r_.first().__s.__size_ = (unsigned char)(__s);} 1447# endif 1448 1449 _LIBCPP_INLINE_VISIBILITY 1450 size_type __get_short_size() const _NOEXCEPT 1451# ifdef _LIBCPP_BIG_ENDIAN 1452 {return __r_.first().__s.__size_ >> 1;} 1453# else 1454 {return __r_.first().__s.__size_;} 1455# endif 1456 1457#else // _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT 1458 1459 _LIBCPP_INLINE_VISIBILITY 1460 void __set_short_size(size_type __s) _NOEXCEPT 1461# ifdef _LIBCPP_BIG_ENDIAN 1462 {__r_.first().__s.__size_ = (unsigned char)(__s);} 1463# else 1464 {__r_.first().__s.__size_ = (unsigned char)(__s << 1);} 1465# endif 1466 1467 _LIBCPP_INLINE_VISIBILITY 1468 size_type __get_short_size() const _NOEXCEPT 1469# ifdef _LIBCPP_BIG_ENDIAN 1470 {return __r_.first().__s.__size_;} 1471# else 1472 {return __r_.first().__s.__size_ >> 1;} 1473# endif 1474 1475#endif // _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT 1476 1477 _LIBCPP_INLINE_VISIBILITY 1478 void __set_long_size(size_type __s) _NOEXCEPT 1479 {__r_.first().__l.__size_ = __s;} 1480 _LIBCPP_INLINE_VISIBILITY 1481 size_type __get_long_size() const _NOEXCEPT 1482 {return __r_.first().__l.__size_;} 1483 _LIBCPP_INLINE_VISIBILITY 1484 void __set_size(size_type __s) _NOEXCEPT 1485 {if (__is_long()) __set_long_size(__s); else __set_short_size(__s);} 1486 1487 _LIBCPP_INLINE_VISIBILITY 1488 void __set_long_cap(size_type __s) _NOEXCEPT 1489 {__r_.first().__l.__cap_ = __long_mask | __s;} 1490 _LIBCPP_INLINE_VISIBILITY 1491 size_type __get_long_cap() const _NOEXCEPT 1492 {return __r_.first().__l.__cap_ & size_type(~__long_mask);} 1493 1494 _LIBCPP_INLINE_VISIBILITY 1495 void __set_long_pointer(pointer __p) _NOEXCEPT 1496 {__r_.first().__l.__data_ = __p;} 1497 _LIBCPP_INLINE_VISIBILITY 1498 pointer __get_long_pointer() _NOEXCEPT 1499 {return __r_.first().__l.__data_;} 1500 _LIBCPP_INLINE_VISIBILITY 1501 const_pointer __get_long_pointer() const _NOEXCEPT 1502 {return __r_.first().__l.__data_;} 1503 _LIBCPP_INLINE_VISIBILITY 1504 pointer __get_short_pointer() _NOEXCEPT 1505 {return pointer_traits<pointer>::pointer_to(__r_.first().__s.__data_[0]);} 1506 _LIBCPP_INLINE_VISIBILITY 1507 const_pointer __get_short_pointer() const _NOEXCEPT 1508 {return pointer_traits<const_pointer>::pointer_to(__r_.first().__s.__data_[0]);} 1509 _LIBCPP_INLINE_VISIBILITY 1510 pointer __get_pointer() _NOEXCEPT 1511 {return __is_long() ? __get_long_pointer() : __get_short_pointer();} 1512 _LIBCPP_INLINE_VISIBILITY 1513 const_pointer __get_pointer() const _NOEXCEPT 1514 {return __is_long() ? __get_long_pointer() : __get_short_pointer();} 1515 1516 _LIBCPP_INLINE_VISIBILITY 1517 void __zero() _NOEXCEPT 1518 { 1519 size_type (&__a)[__n_words] = __r_.first().__r.__words; 1520 for (unsigned __i = 0; __i < __n_words; ++__i) 1521 __a[__i] = 0; 1522 } 1523 1524 template <size_type __a> static 1525 _LIBCPP_INLINE_VISIBILITY 1526 size_type __align_it(size_type __s) _NOEXCEPT 1527 {return (__s + (__a-1)) & ~(__a-1);} 1528 enum {__alignment = 16}; 1529 static _LIBCPP_INLINE_VISIBILITY 1530 size_type __recommend(size_type __s) _NOEXCEPT 1531 { 1532 if (__s < __min_cap) return static_cast<size_type>(__min_cap) - 1; 1533 size_type __guess = __align_it<sizeof(value_type) < __alignment ? 1534 __alignment/sizeof(value_type) : 1 > (__s+1) - 1; 1535 if (__guess == __min_cap) ++__guess; 1536 return __guess; 1537 } 1538 1539 inline 1540 void __init(const value_type* __s, size_type __sz, size_type __reserve); 1541 inline 1542 void __init(const value_type* __s, size_type __sz); 1543 inline 1544 void __init(size_type __n, value_type __c); 1545 1546 template <class _InputIterator> 1547 inline 1548 typename enable_if 1549 < 1550 __is_exactly_cpp17_input_iterator<_InputIterator>::value, 1551 void 1552 >::type 1553 __init(_InputIterator __first, _InputIterator __last); 1554 1555 template <class _ForwardIterator> 1556 inline 1557 typename enable_if 1558 < 1559 __is_cpp17_forward_iterator<_ForwardIterator>::value, 1560 void 1561 >::type 1562 __init(_ForwardIterator __first, _ForwardIterator __last); 1563 1564 void __grow_by(size_type __old_cap, size_type __delta_cap, size_type __old_sz, 1565 size_type __n_copy, size_type __n_del, size_type __n_add = 0); 1566 void __grow_by_and_replace(size_type __old_cap, size_type __delta_cap, size_type __old_sz, 1567 size_type __n_copy, size_type __n_del, 1568 size_type __n_add, const value_type* __p_new_stuff); 1569 1570 _LIBCPP_INLINE_VISIBILITY 1571 void __erase_to_end(size_type __pos); 1572 1573 _LIBCPP_INLINE_VISIBILITY 1574 void __copy_assign_alloc(const basic_string& __str) 1575 {__copy_assign_alloc(__str, integral_constant<bool, 1576 __alloc_traits::propagate_on_container_copy_assignment::value>());} 1577 1578 _LIBCPP_INLINE_VISIBILITY 1579 void __copy_assign_alloc(const basic_string& __str, true_type) 1580 { 1581 if (__alloc() == __str.__alloc()) 1582 __alloc() = __str.__alloc(); 1583 else 1584 { 1585 if (!__str.__is_long()) 1586 { 1587 __clear_and_shrink(); 1588 __alloc() = __str.__alloc(); 1589 } 1590 else 1591 { 1592 allocator_type __a = __str.__alloc(); 1593 pointer __p = __alloc_traits::allocate(__a, __str.__get_long_cap()); 1594 __clear_and_shrink(); 1595 __alloc() = _VSTD::move(__a); 1596 __set_long_pointer(__p); 1597 __set_long_cap(__str.__get_long_cap()); 1598 __set_long_size(__str.size()); 1599 } 1600 } 1601 } 1602 1603 _LIBCPP_INLINE_VISIBILITY 1604 void __copy_assign_alloc(const basic_string&, false_type) _NOEXCEPT 1605 {} 1606 1607#ifndef _LIBCPP_CXX03_LANG 1608 _LIBCPP_INLINE_VISIBILITY 1609 void __move_assign(basic_string& __str, false_type) 1610 _NOEXCEPT_(__alloc_traits::is_always_equal::value); 1611 _LIBCPP_INLINE_VISIBILITY 1612 void __move_assign(basic_string& __str, true_type) 1613#if _LIBCPP_STD_VER > 14 1614 _NOEXCEPT; 1615#else 1616 _NOEXCEPT_(is_nothrow_move_assignable<allocator_type>::value); 1617#endif 1618#endif 1619 1620 _LIBCPP_INLINE_VISIBILITY 1621 void 1622 __move_assign_alloc(basic_string& __str) 1623 _NOEXCEPT_( 1624 !__alloc_traits::propagate_on_container_move_assignment::value || 1625 is_nothrow_move_assignable<allocator_type>::value) 1626 {__move_assign_alloc(__str, integral_constant<bool, 1627 __alloc_traits::propagate_on_container_move_assignment::value>());} 1628 1629 _LIBCPP_INLINE_VISIBILITY 1630 void __move_assign_alloc(basic_string& __c, true_type) 1631 _NOEXCEPT_(is_nothrow_move_assignable<allocator_type>::value) 1632 { 1633 __alloc() = _VSTD::move(__c.__alloc()); 1634 } 1635 1636 _LIBCPP_INLINE_VISIBILITY 1637 void __move_assign_alloc(basic_string&, false_type) 1638 _NOEXCEPT 1639 {} 1640 1641 _LIBCPP_INLINE_VISIBILITY void __invalidate_all_iterators(); 1642 _LIBCPP_INLINE_VISIBILITY void __invalidate_iterators_past(size_type); 1643 1644 friend basic_string operator+<>(const basic_string&, const basic_string&); 1645 friend basic_string operator+<>(const value_type*, const basic_string&); 1646 friend basic_string operator+<>(value_type, const basic_string&); 1647 friend basic_string operator+<>(const basic_string&, const value_type*); 1648 friend basic_string operator+<>(const basic_string&, value_type); 1649}; 1650 1651#ifndef _LIBCPP_HAS_NO_DEDUCTION_GUIDES 1652template<class _InputIterator, 1653 class _CharT = typename iterator_traits<_InputIterator>::value_type, 1654 class _Allocator = allocator<_CharT>, 1655 class = typename enable_if<__is_cpp17_input_iterator<_InputIterator>::value, void>::type, 1656 class = typename enable_if<__is_allocator<_Allocator>::value, void>::type 1657 > 1658basic_string(_InputIterator, _InputIterator, _Allocator = _Allocator()) 1659 -> basic_string<_CharT, char_traits<_CharT>, _Allocator>; 1660 1661template<class _CharT, 1662 class _Traits, 1663 class _Allocator = allocator<_CharT>, 1664 class = typename enable_if<__is_allocator<_Allocator>::value, void>::type 1665 > 1666explicit basic_string(basic_string_view<_CharT, _Traits>, const _Allocator& = _Allocator()) 1667 -> basic_string<_CharT, _Traits, _Allocator>; 1668 1669template<class _CharT, 1670 class _Traits, 1671 class _Allocator = allocator<_CharT>, 1672 class = typename enable_if<__is_allocator<_Allocator>::value, void>::type, 1673 class _Sz = typename allocator_traits<_Allocator>::size_type 1674 > 1675basic_string(basic_string_view<_CharT, _Traits>, _Sz, _Sz, const _Allocator& = _Allocator()) 1676 -> basic_string<_CharT, _Traits, _Allocator>; 1677#endif 1678 1679 1680template <class _CharT, class _Traits, class _Allocator> 1681inline 1682void 1683basic_string<_CharT, _Traits, _Allocator>::__invalidate_all_iterators() 1684{ 1685#if _LIBCPP_DEBUG_LEVEL >= 2 1686 __get_db()->__invalidate_all(this); 1687#endif // _LIBCPP_DEBUG_LEVEL >= 2 1688} 1689 1690template <class _CharT, class _Traits, class _Allocator> 1691inline 1692void 1693basic_string<_CharT, _Traits, _Allocator>::__invalidate_iterators_past(size_type 1694#if _LIBCPP_DEBUG_LEVEL >= 2 1695 __pos 1696#endif 1697 ) 1698{ 1699#if _LIBCPP_DEBUG_LEVEL >= 2 1700 __c_node* __c = __get_db()->__find_c_and_lock(this); 1701 if (__c) 1702 { 1703 const_pointer __new_last = __get_pointer() + __pos; 1704 for (__i_node** __p = __c->end_; __p != __c->beg_; ) 1705 { 1706 --__p; 1707 const_iterator* __i = static_cast<const_iterator*>((*__p)->__i_); 1708 if (__i->base() > __new_last) 1709 { 1710 (*__p)->__c_ = nullptr; 1711 if (--__c->end_ != __p) 1712 memmove(__p, __p+1, (__c->end_ - __p)*sizeof(__i_node*)); 1713 } 1714 } 1715 __get_db()->unlock(); 1716 } 1717#endif // _LIBCPP_DEBUG_LEVEL >= 2 1718} 1719 1720template <class _CharT, class _Traits, class _Allocator> 1721inline 1722basic_string<_CharT, _Traits, _Allocator>::basic_string() 1723 _NOEXCEPT_(is_nothrow_default_constructible<allocator_type>::value) 1724{ 1725#if _LIBCPP_DEBUG_LEVEL >= 2 1726 __get_db()->__insert_c(this); 1727#endif 1728 __zero(); 1729} 1730 1731template <class _CharT, class _Traits, class _Allocator> 1732inline 1733basic_string<_CharT, _Traits, _Allocator>::basic_string(const allocator_type& __a) 1734#if _LIBCPP_STD_VER <= 14 1735 _NOEXCEPT_(is_nothrow_copy_constructible<allocator_type>::value) 1736#else 1737 _NOEXCEPT 1738#endif 1739: __r_(__second_tag(), __a) 1740{ 1741#if _LIBCPP_DEBUG_LEVEL >= 2 1742 __get_db()->__insert_c(this); 1743#endif 1744 __zero(); 1745} 1746 1747template <class _CharT, class _Traits, class _Allocator> 1748void basic_string<_CharT, _Traits, _Allocator>::__init(const value_type* __s, 1749 size_type __sz, 1750 size_type __reserve) 1751{ 1752 if (__reserve > max_size()) 1753 this->__throw_length_error(); 1754 pointer __p; 1755 if (__reserve < __min_cap) 1756 { 1757 __set_short_size(__sz); 1758 __p = __get_short_pointer(); 1759 } 1760 else 1761 { 1762 size_type __cap = __recommend(__reserve); 1763 __p = __alloc_traits::allocate(__alloc(), __cap+1); 1764 __set_long_pointer(__p); 1765 __set_long_cap(__cap+1); 1766 __set_long_size(__sz); 1767 } 1768 traits_type::copy(_VSTD::__to_address(__p), __s, __sz); 1769 traits_type::assign(__p[__sz], value_type()); 1770} 1771 1772template <class _CharT, class _Traits, class _Allocator> 1773void 1774basic_string<_CharT, _Traits, _Allocator>::__init(const value_type* __s, size_type __sz) 1775{ 1776 if (__sz > max_size()) 1777 this->__throw_length_error(); 1778 pointer __p; 1779 if (__sz < __min_cap) 1780 { 1781 __set_short_size(__sz); 1782 __p = __get_short_pointer(); 1783 } 1784 else 1785 { 1786 size_type __cap = __recommend(__sz); 1787 __p = __alloc_traits::allocate(__alloc(), __cap+1); 1788 __set_long_pointer(__p); 1789 __set_long_cap(__cap+1); 1790 __set_long_size(__sz); 1791 } 1792 traits_type::copy(_VSTD::__to_address(__p), __s, __sz); 1793 traits_type::assign(__p[__sz], value_type()); 1794} 1795 1796template <class _CharT, class _Traits, class _Allocator> 1797template <class> 1798basic_string<_CharT, _Traits, _Allocator>::basic_string(const _CharT* __s, const _Allocator& __a) 1799 : __r_(__second_tag(), __a) 1800{ 1801 _LIBCPP_ASSERT(__s != nullptr, "basic_string(const char*, allocator) detected nullptr"); 1802 __init(__s, traits_type::length(__s)); 1803#if _LIBCPP_DEBUG_LEVEL >= 2 1804 __get_db()->__insert_c(this); 1805#endif 1806} 1807 1808template <class _CharT, class _Traits, class _Allocator> 1809inline 1810basic_string<_CharT, _Traits, _Allocator>::basic_string(const _CharT* __s, size_type __n) 1811{ 1812 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "basic_string(const char*, n) detected nullptr"); 1813 __init(__s, __n); 1814#if _LIBCPP_DEBUG_LEVEL >= 2 1815 __get_db()->__insert_c(this); 1816#endif 1817} 1818 1819template <class _CharT, class _Traits, class _Allocator> 1820inline 1821basic_string<_CharT, _Traits, _Allocator>::basic_string(const _CharT* __s, size_type __n, const _Allocator& __a) 1822 : __r_(__second_tag(), __a) 1823{ 1824 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "basic_string(const char*, n, allocator) detected nullptr"); 1825 __init(__s, __n); 1826#if _LIBCPP_DEBUG_LEVEL >= 2 1827 __get_db()->__insert_c(this); 1828#endif 1829} 1830 1831template <class _CharT, class _Traits, class _Allocator> 1832basic_string<_CharT, _Traits, _Allocator>::basic_string(const basic_string& __str) 1833 : __r_(__second_tag(), __alloc_traits::select_on_container_copy_construction(__str.__alloc())) 1834{ 1835 if (!__str.__is_long()) 1836 __r_.first().__r = __str.__r_.first().__r; 1837 else 1838 __init(_VSTD::__to_address(__str.__get_long_pointer()), __str.__get_long_size()); 1839#if _LIBCPP_DEBUG_LEVEL >= 2 1840 __get_db()->__insert_c(this); 1841#endif 1842} 1843 1844template <class _CharT, class _Traits, class _Allocator> 1845basic_string<_CharT, _Traits, _Allocator>::basic_string( 1846 const basic_string& __str, const allocator_type& __a) 1847 : __r_(__second_tag(), __a) 1848{ 1849 if (!__str.__is_long()) 1850 __r_.first().__r = __str.__r_.first().__r; 1851 else 1852 __init(_VSTD::__to_address(__str.__get_long_pointer()), __str.__get_long_size()); 1853#if _LIBCPP_DEBUG_LEVEL >= 2 1854 __get_db()->__insert_c(this); 1855#endif 1856} 1857 1858#ifndef _LIBCPP_CXX03_LANG 1859 1860template <class _CharT, class _Traits, class _Allocator> 1861inline 1862basic_string<_CharT, _Traits, _Allocator>::basic_string(basic_string&& __str) 1863#if _LIBCPP_STD_VER <= 14 1864 _NOEXCEPT_(is_nothrow_move_constructible<allocator_type>::value) 1865#else 1866 _NOEXCEPT 1867#endif 1868 : __r_(_VSTD::move(__str.__r_)) 1869{ 1870 __str.__zero(); 1871#if _LIBCPP_DEBUG_LEVEL >= 2 1872 __get_db()->__insert_c(this); 1873 if (__is_long()) 1874 __get_db()->swap(this, &__str); 1875#endif 1876} 1877 1878template <class _CharT, class _Traits, class _Allocator> 1879inline 1880basic_string<_CharT, _Traits, _Allocator>::basic_string(basic_string&& __str, const allocator_type& __a) 1881 : __r_(__second_tag(), __a) 1882{ 1883 if (__str.__is_long() && __a != __str.__alloc()) // copy, not move 1884 __init(_VSTD::__to_address(__str.__get_long_pointer()), __str.__get_long_size()); 1885 else 1886 { 1887 __r_.first().__r = __str.__r_.first().__r; 1888 __str.__zero(); 1889 } 1890#if _LIBCPP_DEBUG_LEVEL >= 2 1891 __get_db()->__insert_c(this); 1892 if (__is_long()) 1893 __get_db()->swap(this, &__str); 1894#endif 1895} 1896 1897#endif // _LIBCPP_CXX03_LANG 1898 1899template <class _CharT, class _Traits, class _Allocator> 1900void 1901basic_string<_CharT, _Traits, _Allocator>::__init(size_type __n, value_type __c) 1902{ 1903 if (__n > max_size()) 1904 this->__throw_length_error(); 1905 pointer __p; 1906 if (__n < __min_cap) 1907 { 1908 __set_short_size(__n); 1909 __p = __get_short_pointer(); 1910 } 1911 else 1912 { 1913 size_type __cap = __recommend(__n); 1914 __p = __alloc_traits::allocate(__alloc(), __cap+1); 1915 __set_long_pointer(__p); 1916 __set_long_cap(__cap+1); 1917 __set_long_size(__n); 1918 } 1919 traits_type::assign(_VSTD::__to_address(__p), __n, __c); 1920 traits_type::assign(__p[__n], value_type()); 1921} 1922 1923template <class _CharT, class _Traits, class _Allocator> 1924inline 1925basic_string<_CharT, _Traits, _Allocator>::basic_string(size_type __n, _CharT __c) 1926{ 1927 __init(__n, __c); 1928#if _LIBCPP_DEBUG_LEVEL >= 2 1929 __get_db()->__insert_c(this); 1930#endif 1931} 1932 1933template <class _CharT, class _Traits, class _Allocator> 1934template <class> 1935basic_string<_CharT, _Traits, _Allocator>::basic_string(size_type __n, _CharT __c, const _Allocator& __a) 1936 : __r_(__second_tag(), __a) 1937{ 1938 __init(__n, __c); 1939#if _LIBCPP_DEBUG_LEVEL >= 2 1940 __get_db()->__insert_c(this); 1941#endif 1942} 1943 1944template <class _CharT, class _Traits, class _Allocator> 1945basic_string<_CharT, _Traits, _Allocator>::basic_string(const basic_string& __str, 1946 size_type __pos, size_type __n, 1947 const _Allocator& __a) 1948 : __r_(__second_tag(), __a) 1949{ 1950 size_type __str_sz = __str.size(); 1951 if (__pos > __str_sz) 1952 this->__throw_out_of_range(); 1953 __init(__str.data() + __pos, _VSTD::min(__n, __str_sz - __pos)); 1954#if _LIBCPP_DEBUG_LEVEL >= 2 1955 __get_db()->__insert_c(this); 1956#endif 1957} 1958 1959template <class _CharT, class _Traits, class _Allocator> 1960inline 1961basic_string<_CharT, _Traits, _Allocator>::basic_string(const basic_string& __str, size_type __pos, 1962 const _Allocator& __a) 1963 : __r_(__second_tag(), __a) 1964{ 1965 size_type __str_sz = __str.size(); 1966 if (__pos > __str_sz) 1967 this->__throw_out_of_range(); 1968 __init(__str.data() + __pos, __str_sz - __pos); 1969#if _LIBCPP_DEBUG_LEVEL >= 2 1970 __get_db()->__insert_c(this); 1971#endif 1972} 1973 1974template <class _CharT, class _Traits, class _Allocator> 1975template <class _Tp, class> 1976basic_string<_CharT, _Traits, _Allocator>::basic_string( 1977 const _Tp& __t, size_type __pos, size_type __n, const allocator_type& __a) 1978 : __r_(__second_tag(), __a) 1979{ 1980 __self_view __sv0 = __t; 1981 __self_view __sv = __sv0.substr(__pos, __n); 1982 __init(__sv.data(), __sv.size()); 1983#if _LIBCPP_DEBUG_LEVEL >= 2 1984 __get_db()->__insert_c(this); 1985#endif 1986} 1987 1988template <class _CharT, class _Traits, class _Allocator> 1989template <class _Tp, class> 1990basic_string<_CharT, _Traits, _Allocator>::basic_string(const _Tp & __t) 1991{ 1992 __self_view __sv = __t; 1993 __init(__sv.data(), __sv.size()); 1994#if _LIBCPP_DEBUG_LEVEL >= 2 1995 __get_db()->__insert_c(this); 1996#endif 1997} 1998 1999template <class _CharT, class _Traits, class _Allocator> 2000template <class _Tp, class> 2001basic_string<_CharT, _Traits, _Allocator>::basic_string(const _Tp & __t, const _Allocator& __a) 2002 : __r_(__second_tag(), __a) 2003{ 2004 __self_view __sv = __t; 2005 __init(__sv.data(), __sv.size()); 2006#if _LIBCPP_DEBUG_LEVEL >= 2 2007 __get_db()->__insert_c(this); 2008#endif 2009} 2010 2011template <class _CharT, class _Traits, class _Allocator> 2012template <class _InputIterator> 2013typename enable_if 2014< 2015 __is_exactly_cpp17_input_iterator<_InputIterator>::value, 2016 void 2017>::type 2018basic_string<_CharT, _Traits, _Allocator>::__init(_InputIterator __first, _InputIterator __last) 2019{ 2020 __zero(); 2021#ifndef _LIBCPP_NO_EXCEPTIONS 2022 try 2023 { 2024#endif // _LIBCPP_NO_EXCEPTIONS 2025 for (; __first != __last; ++__first) 2026 push_back(*__first); 2027#ifndef _LIBCPP_NO_EXCEPTIONS 2028 } 2029 catch (...) 2030 { 2031 if (__is_long()) 2032 __alloc_traits::deallocate(__alloc(), __get_long_pointer(), __get_long_cap()); 2033 throw; 2034 } 2035#endif // _LIBCPP_NO_EXCEPTIONS 2036} 2037 2038template <class _CharT, class _Traits, class _Allocator> 2039template <class _ForwardIterator> 2040typename enable_if 2041< 2042 __is_cpp17_forward_iterator<_ForwardIterator>::value, 2043 void 2044>::type 2045basic_string<_CharT, _Traits, _Allocator>::__init(_ForwardIterator __first, _ForwardIterator __last) 2046{ 2047 size_type __sz = static_cast<size_type>(_VSTD::distance(__first, __last)); 2048 if (__sz > max_size()) 2049 this->__throw_length_error(); 2050 pointer __p; 2051 if (__sz < __min_cap) 2052 { 2053 __set_short_size(__sz); 2054 __p = __get_short_pointer(); 2055 } 2056 else 2057 { 2058 size_type __cap = __recommend(__sz); 2059 __p = __alloc_traits::allocate(__alloc(), __cap+1); 2060 __set_long_pointer(__p); 2061 __set_long_cap(__cap+1); 2062 __set_long_size(__sz); 2063 } 2064 for (; __first != __last; ++__first, (void) ++__p) 2065 traits_type::assign(*__p, *__first); 2066 traits_type::assign(*__p, value_type()); 2067} 2068 2069template <class _CharT, class _Traits, class _Allocator> 2070template<class _InputIterator, class> 2071inline 2072basic_string<_CharT, _Traits, _Allocator>::basic_string(_InputIterator __first, _InputIterator __last) 2073{ 2074 __init(__first, __last); 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 _InputIterator, class> 2082inline 2083basic_string<_CharT, _Traits, _Allocator>::basic_string(_InputIterator __first, _InputIterator __last, 2084 const allocator_type& __a) 2085 : __r_(__second_tag(), __a) 2086{ 2087 __init(__first, __last); 2088#if _LIBCPP_DEBUG_LEVEL >= 2 2089 __get_db()->__insert_c(this); 2090#endif 2091} 2092 2093#ifndef _LIBCPP_CXX03_LANG 2094 2095template <class _CharT, class _Traits, class _Allocator> 2096inline 2097basic_string<_CharT, _Traits, _Allocator>::basic_string( 2098 initializer_list<_CharT> __il) 2099{ 2100 __init(__il.begin(), __il.end()); 2101#if _LIBCPP_DEBUG_LEVEL >= 2 2102 __get_db()->__insert_c(this); 2103#endif 2104} 2105 2106template <class _CharT, class _Traits, class _Allocator> 2107inline 2108 2109basic_string<_CharT, _Traits, _Allocator>::basic_string( 2110 initializer_list<_CharT> __il, const _Allocator& __a) 2111 : __r_(__second_tag(), __a) 2112{ 2113 __init(__il.begin(), __il.end()); 2114#if _LIBCPP_DEBUG_LEVEL >= 2 2115 __get_db()->__insert_c(this); 2116#endif 2117} 2118 2119#endif // _LIBCPP_CXX03_LANG 2120 2121template <class _CharT, class _Traits, class _Allocator> 2122basic_string<_CharT, _Traits, _Allocator>::~basic_string() 2123{ 2124#if _LIBCPP_DEBUG_LEVEL >= 2 2125 __get_db()->__erase_c(this); 2126#endif 2127 if (__is_long()) 2128 __alloc_traits::deallocate(__alloc(), __get_long_pointer(), __get_long_cap()); 2129} 2130 2131template <class _CharT, class _Traits, class _Allocator> 2132void 2133basic_string<_CharT, _Traits, _Allocator>::__grow_by_and_replace 2134 (size_type __old_cap, size_type __delta_cap, size_type __old_sz, 2135 size_type __n_copy, size_type __n_del, size_type __n_add, const value_type* __p_new_stuff) 2136{ 2137 size_type __ms = max_size(); 2138 if (__delta_cap > __ms - __old_cap - 1) 2139 this->__throw_length_error(); 2140 pointer __old_p = __get_pointer(); 2141 size_type __cap = __old_cap < __ms / 2 - __alignment ? 2142 __recommend(_VSTD::max(__old_cap + __delta_cap, 2 * __old_cap)) : 2143 __ms - 1; 2144 pointer __p = __alloc_traits::allocate(__alloc(), __cap+1); 2145 __invalidate_all_iterators(); 2146 if (__n_copy != 0) 2147 traits_type::copy(_VSTD::__to_address(__p), 2148 _VSTD::__to_address(__old_p), __n_copy); 2149 if (__n_add != 0) 2150 traits_type::copy(_VSTD::__to_address(__p) + __n_copy, __p_new_stuff, __n_add); 2151 size_type __sec_cp_sz = __old_sz - __n_del - __n_copy; 2152 if (__sec_cp_sz != 0) 2153 traits_type::copy(_VSTD::__to_address(__p) + __n_copy + __n_add, 2154 _VSTD::__to_address(__old_p) + __n_copy + __n_del, __sec_cp_sz); 2155 if (__old_cap+1 != __min_cap) 2156 __alloc_traits::deallocate(__alloc(), __old_p, __old_cap+1); 2157 __set_long_pointer(__p); 2158 __set_long_cap(__cap+1); 2159 __old_sz = __n_copy + __n_add + __sec_cp_sz; 2160 __set_long_size(__old_sz); 2161 traits_type::assign(__p[__old_sz], value_type()); 2162} 2163 2164template <class _CharT, class _Traits, class _Allocator> 2165void 2166basic_string<_CharT, _Traits, _Allocator>::__grow_by(size_type __old_cap, size_type __delta_cap, size_type __old_sz, 2167 size_type __n_copy, size_type __n_del, size_type __n_add) 2168{ 2169 size_type __ms = max_size(); 2170 if (__delta_cap > __ms - __old_cap) 2171 this->__throw_length_error(); 2172 pointer __old_p = __get_pointer(); 2173 size_type __cap = __old_cap < __ms / 2 - __alignment ? 2174 __recommend(_VSTD::max(__old_cap + __delta_cap, 2 * __old_cap)) : 2175 __ms - 1; 2176 pointer __p = __alloc_traits::allocate(__alloc(), __cap+1); 2177 __invalidate_all_iterators(); 2178 if (__n_copy != 0) 2179 traits_type::copy(_VSTD::__to_address(__p), 2180 _VSTD::__to_address(__old_p), __n_copy); 2181 size_type __sec_cp_sz = __old_sz - __n_del - __n_copy; 2182 if (__sec_cp_sz != 0) 2183 traits_type::copy(_VSTD::__to_address(__p) + __n_copy + __n_add, 2184 _VSTD::__to_address(__old_p) + __n_copy + __n_del, 2185 __sec_cp_sz); 2186 if (__old_cap+1 != __min_cap) 2187 __alloc_traits::deallocate(__alloc(), __old_p, __old_cap+1); 2188 __set_long_pointer(__p); 2189 __set_long_cap(__cap+1); 2190} 2191 2192// assign 2193 2194template <class _CharT, class _Traits, class _Allocator> 2195basic_string<_CharT, _Traits, _Allocator>& 2196basic_string<_CharT, _Traits, _Allocator>::assign(const value_type* __s, size_type __n) 2197{ 2198 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::assign received nullptr"); 2199 size_type __cap = capacity(); 2200 if (__cap >= __n) 2201 { 2202 value_type* __p = _VSTD::__to_address(__get_pointer()); 2203 traits_type::move(__p, __s, __n); 2204 traits_type::assign(__p[__n], value_type()); 2205 __set_size(__n); 2206 __invalidate_iterators_past(__n); 2207 } 2208 else 2209 { 2210 size_type __sz = size(); 2211 __grow_by_and_replace(__cap, __n - __cap, __sz, 0, __sz, __n, __s); 2212 } 2213 return *this; 2214} 2215 2216template <class _CharT, class _Traits, class _Allocator> 2217basic_string<_CharT, _Traits, _Allocator>& 2218basic_string<_CharT, _Traits, _Allocator>::assign(size_type __n, value_type __c) 2219{ 2220 size_type __cap = capacity(); 2221 if (__cap < __n) 2222 { 2223 size_type __sz = size(); 2224 __grow_by(__cap, __n - __cap, __sz, 0, __sz); 2225 } 2226 else 2227 __invalidate_iterators_past(__n); 2228 value_type* __p = _VSTD::__to_address(__get_pointer()); 2229 traits_type::assign(__p, __n, __c); 2230 traits_type::assign(__p[__n], value_type()); 2231 __set_size(__n); 2232 return *this; 2233} 2234 2235template <class _CharT, class _Traits, class _Allocator> 2236basic_string<_CharT, _Traits, _Allocator>& 2237basic_string<_CharT, _Traits, _Allocator>::operator=(value_type __c) 2238{ 2239 pointer __p; 2240 if (__is_long()) 2241 { 2242 __p = __get_long_pointer(); 2243 __set_long_size(1); 2244 } 2245 else 2246 { 2247 __p = __get_short_pointer(); 2248 __set_short_size(1); 2249 } 2250 traits_type::assign(*__p, __c); 2251 traits_type::assign(*++__p, value_type()); 2252 __invalidate_iterators_past(1); 2253 return *this; 2254} 2255 2256template <class _CharT, class _Traits, class _Allocator> 2257basic_string<_CharT, _Traits, _Allocator>& 2258basic_string<_CharT, _Traits, _Allocator>::operator=(const basic_string& __str) 2259{ 2260 if (this != &__str) 2261 { 2262 __copy_assign_alloc(__str); 2263 return assign(__str.data(), __str.size()); 2264 } 2265 return *this; 2266} 2267 2268#ifndef _LIBCPP_CXX03_LANG 2269 2270template <class _CharT, class _Traits, class _Allocator> 2271inline 2272void 2273basic_string<_CharT, _Traits, _Allocator>::__move_assign(basic_string& __str, false_type) 2274 _NOEXCEPT_(__alloc_traits::is_always_equal::value) 2275{ 2276 if (__alloc() != __str.__alloc()) 2277 assign(__str); 2278 else 2279 __move_assign(__str, true_type()); 2280} 2281 2282template <class _CharT, class _Traits, class _Allocator> 2283inline 2284void 2285basic_string<_CharT, _Traits, _Allocator>::__move_assign(basic_string& __str, true_type) 2286#if _LIBCPP_STD_VER > 14 2287 _NOEXCEPT 2288#else 2289 _NOEXCEPT_(is_nothrow_move_assignable<allocator_type>::value) 2290#endif 2291{ 2292 if (__is_long()) { 2293 __alloc_traits::deallocate(__alloc(), __get_long_pointer(), 2294 __get_long_cap()); 2295#if _LIBCPP_STD_VER <= 14 2296 if (!is_nothrow_move_assignable<allocator_type>::value) { 2297 __set_short_size(0); 2298 traits_type::assign(__get_short_pointer()[0], value_type()); 2299 } 2300#endif 2301 } 2302 __move_assign_alloc(__str); 2303 __r_.first() = __str.__r_.first(); 2304 __str.__set_short_size(0); 2305 traits_type::assign(__str.__get_short_pointer()[0], value_type()); 2306} 2307 2308template <class _CharT, class _Traits, class _Allocator> 2309inline 2310basic_string<_CharT, _Traits, _Allocator>& 2311basic_string<_CharT, _Traits, _Allocator>::operator=(basic_string&& __str) 2312 _NOEXCEPT_((__noexcept_move_assign_container<_Allocator, __alloc_traits>::value)) 2313{ 2314 __move_assign(__str, integral_constant<bool, 2315 __alloc_traits::propagate_on_container_move_assignment::value>()); 2316 return *this; 2317} 2318 2319#endif 2320 2321template <class _CharT, class _Traits, class _Allocator> 2322template<class _InputIterator> 2323typename enable_if 2324< 2325 __is_exactly_cpp17_input_iterator <_InputIterator>::value 2326 || !__libcpp_string_gets_noexcept_iterator<_InputIterator>::value, 2327 basic_string<_CharT, _Traits, _Allocator>& 2328>::type 2329basic_string<_CharT, _Traits, _Allocator>::assign(_InputIterator __first, _InputIterator __last) 2330{ 2331 const basic_string __temp(__first, __last, __alloc()); 2332 assign(__temp.data(), __temp.size()); 2333 return *this; 2334} 2335 2336template <class _CharT, class _Traits, class _Allocator> 2337template<class _ForwardIterator> 2338typename enable_if 2339< 2340 __is_cpp17_forward_iterator<_ForwardIterator>::value 2341 && __libcpp_string_gets_noexcept_iterator<_ForwardIterator>::value, 2342 basic_string<_CharT, _Traits, _Allocator>& 2343>::type 2344basic_string<_CharT, _Traits, _Allocator>::assign(_ForwardIterator __first, _ForwardIterator __last) 2345{ 2346 size_type __n = static_cast<size_type>(_VSTD::distance(__first, __last)); 2347 size_type __cap = capacity(); 2348 if (__cap < __n) 2349 { 2350 size_type __sz = size(); 2351 __grow_by(__cap, __n - __cap, __sz, 0, __sz); 2352 } 2353 else 2354 __invalidate_iterators_past(__n); 2355 pointer __p = __get_pointer(); 2356 for (; __first != __last; ++__first, ++__p) 2357 traits_type::assign(*__p, *__first); 2358 traits_type::assign(*__p, value_type()); 2359 __set_size(__n); 2360 return *this; 2361} 2362 2363template <class _CharT, class _Traits, class _Allocator> 2364basic_string<_CharT, _Traits, _Allocator>& 2365basic_string<_CharT, _Traits, _Allocator>::assign(const basic_string& __str, size_type __pos, size_type __n) 2366{ 2367 size_type __sz = __str.size(); 2368 if (__pos > __sz) 2369 this->__throw_out_of_range(); 2370 return assign(__str.data() + __pos, _VSTD::min(__n, __sz - __pos)); 2371} 2372 2373template <class _CharT, class _Traits, class _Allocator> 2374template <class _Tp> 2375typename enable_if 2376< 2377 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 2378 basic_string<_CharT, _Traits, _Allocator>& 2379>::type 2380basic_string<_CharT, _Traits, _Allocator>::assign(const _Tp & __t, size_type __pos, size_type __n) 2381{ 2382 __self_view __sv = __t; 2383 size_type __sz = __sv.size(); 2384 if (__pos > __sz) 2385 this->__throw_out_of_range(); 2386 return assign(__sv.data() + __pos, _VSTD::min(__n, __sz - __pos)); 2387} 2388 2389 2390template <class _CharT, class _Traits, class _Allocator> 2391basic_string<_CharT, _Traits, _Allocator>& 2392basic_string<_CharT, _Traits, _Allocator>::assign(const value_type* __s) 2393{ 2394 _LIBCPP_ASSERT(__s != nullptr, "string::assign received nullptr"); 2395 return assign(__s, traits_type::length(__s)); 2396} 2397 2398// append 2399 2400template <class _CharT, class _Traits, class _Allocator> 2401basic_string<_CharT, _Traits, _Allocator>& 2402basic_string<_CharT, _Traits, _Allocator>::append(const value_type* __s, size_type __n) 2403{ 2404 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::append received nullptr"); 2405 size_type __cap = capacity(); 2406 size_type __sz = size(); 2407 if (__cap - __sz >= __n) 2408 { 2409 if (__n) 2410 { 2411 value_type* __p = _VSTD::__to_address(__get_pointer()); 2412 traits_type::copy(__p + __sz, __s, __n); 2413 __sz += __n; 2414 __set_size(__sz); 2415 traits_type::assign(__p[__sz], value_type()); 2416 } 2417 } 2418 else 2419 __grow_by_and_replace(__cap, __sz + __n - __cap, __sz, __sz, 0, __n, __s); 2420 return *this; 2421} 2422 2423template <class _CharT, class _Traits, class _Allocator> 2424basic_string<_CharT, _Traits, _Allocator>& 2425basic_string<_CharT, _Traits, _Allocator>::append(size_type __n, value_type __c) 2426{ 2427 if (__n) 2428 { 2429 size_type __cap = capacity(); 2430 size_type __sz = size(); 2431 if (__cap - __sz < __n) 2432 __grow_by(__cap, __sz + __n - __cap, __sz, __sz, 0); 2433 pointer __p = __get_pointer(); 2434 traits_type::assign(_VSTD::__to_address(__p) + __sz, __n, __c); 2435 __sz += __n; 2436 __set_size(__sz); 2437 traits_type::assign(__p[__sz], value_type()); 2438 } 2439 return *this; 2440} 2441 2442template <class _CharT, class _Traits, class _Allocator> 2443inline void 2444basic_string<_CharT, _Traits, _Allocator>::__append_default_init(size_type __n) 2445{ 2446 if (__n) 2447 { 2448 size_type __cap = capacity(); 2449 size_type __sz = size(); 2450 if (__cap - __sz < __n) 2451 __grow_by(__cap, __sz + __n - __cap, __sz, __sz, 0); 2452 pointer __p = __get_pointer(); 2453 __sz += __n; 2454 __set_size(__sz); 2455 traits_type::assign(__p[__sz], value_type()); 2456 } 2457} 2458 2459template <class _CharT, class _Traits, class _Allocator> 2460void 2461basic_string<_CharT, _Traits, _Allocator>::push_back(value_type __c) 2462{ 2463 bool __is_short = !__is_long(); 2464 size_type __cap; 2465 size_type __sz; 2466 if (__is_short) 2467 { 2468 __cap = __min_cap - 1; 2469 __sz = __get_short_size(); 2470 } 2471 else 2472 { 2473 __cap = __get_long_cap() - 1; 2474 __sz = __get_long_size(); 2475 } 2476 if (__sz == __cap) 2477 { 2478 __grow_by(__cap, 1, __sz, __sz, 0); 2479 __is_short = !__is_long(); 2480 } 2481 pointer __p; 2482 if (__is_short) 2483 { 2484 __p = __get_short_pointer() + __sz; 2485 __set_short_size(__sz+1); 2486 } 2487 else 2488 { 2489 __p = __get_long_pointer() + __sz; 2490 __set_long_size(__sz+1); 2491 } 2492 traits_type::assign(*__p, __c); 2493 traits_type::assign(*++__p, value_type()); 2494} 2495 2496template <class _Tp> 2497bool __ptr_in_range (const _Tp* __p, const _Tp* __first, const _Tp* __last) 2498{ 2499 return __first <= __p && __p < __last; 2500} 2501 2502template <class _Tp1, class _Tp2> 2503bool __ptr_in_range (const _Tp1*, const _Tp2*, const _Tp2*) 2504{ 2505 return false; 2506} 2507 2508template <class _CharT, class _Traits, class _Allocator> 2509template<class _ForwardIterator> 2510basic_string<_CharT, _Traits, _Allocator>& 2511basic_string<_CharT, _Traits, _Allocator>::__append_forward_unsafe( 2512 _ForwardIterator __first, _ForwardIterator __last) 2513{ 2514 static_assert(__is_cpp17_forward_iterator<_ForwardIterator>::value, 2515 "function requires a ForwardIterator"); 2516 size_type __sz = size(); 2517 size_type __cap = capacity(); 2518 size_type __n = static_cast<size_type>(_VSTD::distance(__first, __last)); 2519 if (__n) 2520 { 2521 typedef typename iterator_traits<_ForwardIterator>::reference _CharRef; 2522 _CharRef __tmp_ref = *__first; 2523 if (__ptr_in_range(_VSTD::addressof(__tmp_ref), data(), data() + size())) 2524 { 2525 const basic_string __temp (__first, __last, __alloc()); 2526 append(__temp.data(), __temp.size()); 2527 } 2528 else 2529 { 2530 if (__cap - __sz < __n) 2531 __grow_by(__cap, __sz + __n - __cap, __sz, __sz, 0); 2532 pointer __p = __get_pointer() + __sz; 2533 for (; __first != __last; ++__p, ++__first) 2534 traits_type::assign(*__p, *__first); 2535 traits_type::assign(*__p, value_type()); 2536 __set_size(__sz + __n); 2537 } 2538 } 2539 return *this; 2540} 2541 2542template <class _CharT, class _Traits, class _Allocator> 2543inline 2544basic_string<_CharT, _Traits, _Allocator>& 2545basic_string<_CharT, _Traits, _Allocator>::append(const basic_string& __str) 2546{ 2547 return append(__str.data(), __str.size()); 2548} 2549 2550template <class _CharT, class _Traits, class _Allocator> 2551basic_string<_CharT, _Traits, _Allocator>& 2552basic_string<_CharT, _Traits, _Allocator>::append(const basic_string& __str, size_type __pos, size_type __n) 2553{ 2554 size_type __sz = __str.size(); 2555 if (__pos > __sz) 2556 this->__throw_out_of_range(); 2557 return append(__str.data() + __pos, _VSTD::min(__n, __sz - __pos)); 2558} 2559 2560template <class _CharT, class _Traits, class _Allocator> 2561template <class _Tp> 2562 typename enable_if 2563 < 2564 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 2565 basic_string<_CharT, _Traits, _Allocator>& 2566 >::type 2567basic_string<_CharT, _Traits, _Allocator>::append(const _Tp & __t, size_type __pos, size_type __n) 2568{ 2569 __self_view __sv = __t; 2570 size_type __sz = __sv.size(); 2571 if (__pos > __sz) 2572 this->__throw_out_of_range(); 2573 return append(__sv.data() + __pos, _VSTD::min(__n, __sz - __pos)); 2574} 2575 2576template <class _CharT, class _Traits, class _Allocator> 2577basic_string<_CharT, _Traits, _Allocator>& 2578basic_string<_CharT, _Traits, _Allocator>::append(const value_type* __s) 2579{ 2580 _LIBCPP_ASSERT(__s != nullptr, "string::append received nullptr"); 2581 return append(__s, traits_type::length(__s)); 2582} 2583 2584// insert 2585 2586template <class _CharT, class _Traits, class _Allocator> 2587basic_string<_CharT, _Traits, _Allocator>& 2588basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos, const value_type* __s, size_type __n) 2589{ 2590 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::insert received nullptr"); 2591 size_type __sz = size(); 2592 if (__pos > __sz) 2593 this->__throw_out_of_range(); 2594 size_type __cap = capacity(); 2595 if (__cap - __sz >= __n) 2596 { 2597 if (__n) 2598 { 2599 value_type* __p = _VSTD::__to_address(__get_pointer()); 2600 size_type __n_move = __sz - __pos; 2601 if (__n_move != 0) 2602 { 2603 if (__p + __pos <= __s && __s < __p + __sz) 2604 __s += __n; 2605 traits_type::move(__p + __pos + __n, __p + __pos, __n_move); 2606 } 2607 traits_type::move(__p + __pos, __s, __n); 2608 __sz += __n; 2609 __set_size(__sz); 2610 traits_type::assign(__p[__sz], value_type()); 2611 } 2612 } 2613 else 2614 __grow_by_and_replace(__cap, __sz + __n - __cap, __sz, __pos, 0, __n, __s); 2615 return *this; 2616} 2617 2618template <class _CharT, class _Traits, class _Allocator> 2619basic_string<_CharT, _Traits, _Allocator>& 2620basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos, size_type __n, value_type __c) 2621{ 2622 size_type __sz = size(); 2623 if (__pos > __sz) 2624 this->__throw_out_of_range(); 2625 if (__n) 2626 { 2627 size_type __cap = capacity(); 2628 value_type* __p; 2629 if (__cap - __sz >= __n) 2630 { 2631 __p = _VSTD::__to_address(__get_pointer()); 2632 size_type __n_move = __sz - __pos; 2633 if (__n_move != 0) 2634 traits_type::move(__p + __pos + __n, __p + __pos, __n_move); 2635 } 2636 else 2637 { 2638 __grow_by(__cap, __sz + __n - __cap, __sz, __pos, 0, __n); 2639 __p = _VSTD::__to_address(__get_long_pointer()); 2640 } 2641 traits_type::assign(__p + __pos, __n, __c); 2642 __sz += __n; 2643 __set_size(__sz); 2644 traits_type::assign(__p[__sz], value_type()); 2645 } 2646 return *this; 2647} 2648 2649template <class _CharT, class _Traits, class _Allocator> 2650template<class _InputIterator> 2651typename enable_if 2652< 2653 __is_exactly_cpp17_input_iterator<_InputIterator>::value 2654 || !__libcpp_string_gets_noexcept_iterator<_InputIterator>::value, 2655 typename basic_string<_CharT, _Traits, _Allocator>::iterator 2656>::type 2657basic_string<_CharT, _Traits, _Allocator>::insert(const_iterator __pos, _InputIterator __first, _InputIterator __last) 2658{ 2659#if _LIBCPP_DEBUG_LEVEL >= 2 2660 _LIBCPP_ASSERT(__get_const_db()->__find_c_from_i(&__pos) == this, 2661 "string::insert(iterator, range) called with an iterator not" 2662 " referring to this string"); 2663#endif 2664 const basic_string __temp(__first, __last, __alloc()); 2665 return insert(__pos, __temp.data(), __temp.data() + __temp.size()); 2666} 2667 2668template <class _CharT, class _Traits, class _Allocator> 2669template<class _ForwardIterator> 2670typename enable_if 2671< 2672 __is_cpp17_forward_iterator<_ForwardIterator>::value 2673 && __libcpp_string_gets_noexcept_iterator<_ForwardIterator>::value, 2674 typename basic_string<_CharT, _Traits, _Allocator>::iterator 2675>::type 2676basic_string<_CharT, _Traits, _Allocator>::insert(const_iterator __pos, _ForwardIterator __first, _ForwardIterator __last) 2677{ 2678#if _LIBCPP_DEBUG_LEVEL >= 2 2679 _LIBCPP_ASSERT(__get_const_db()->__find_c_from_i(&__pos) == this, 2680 "string::insert(iterator, range) called with an iterator not" 2681 " referring to this string"); 2682#endif 2683 size_type __ip = static_cast<size_type>(__pos - begin()); 2684 size_type __n = static_cast<size_type>(_VSTD::distance(__first, __last)); 2685 if (__n) 2686 { 2687 typedef typename iterator_traits<_ForwardIterator>::reference _CharRef; 2688 _CharRef __tmp_char = *__first; 2689 if (__ptr_in_range(_VSTD::addressof(__tmp_char), data(), data() + size())) 2690 { 2691 const basic_string __temp(__first, __last, __alloc()); 2692 return insert(__pos, __temp.data(), __temp.data() + __temp.size()); 2693 } 2694 2695 size_type __sz = size(); 2696 size_type __cap = capacity(); 2697 value_type* __p; 2698 if (__cap - __sz >= __n) 2699 { 2700 __p = _VSTD::__to_address(__get_pointer()); 2701 size_type __n_move = __sz - __ip; 2702 if (__n_move != 0) 2703 traits_type::move(__p + __ip + __n, __p + __ip, __n_move); 2704 } 2705 else 2706 { 2707 __grow_by(__cap, __sz + __n - __cap, __sz, __ip, 0, __n); 2708 __p = _VSTD::__to_address(__get_long_pointer()); 2709 } 2710 __sz += __n; 2711 __set_size(__sz); 2712 traits_type::assign(__p[__sz], value_type()); 2713 for (__p += __ip; __first != __last; ++__p, ++__first) 2714 traits_type::assign(*__p, *__first); 2715 } 2716 return begin() + __ip; 2717} 2718 2719template <class _CharT, class _Traits, class _Allocator> 2720inline 2721basic_string<_CharT, _Traits, _Allocator>& 2722basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos1, const basic_string& __str) 2723{ 2724 return insert(__pos1, __str.data(), __str.size()); 2725} 2726 2727template <class _CharT, class _Traits, class _Allocator> 2728basic_string<_CharT, _Traits, _Allocator>& 2729basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos1, const basic_string& __str, 2730 size_type __pos2, size_type __n) 2731{ 2732 size_type __str_sz = __str.size(); 2733 if (__pos2 > __str_sz) 2734 this->__throw_out_of_range(); 2735 return insert(__pos1, __str.data() + __pos2, _VSTD::min(__n, __str_sz - __pos2)); 2736} 2737 2738template <class _CharT, class _Traits, class _Allocator> 2739template <class _Tp> 2740typename enable_if 2741< 2742 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 2743 basic_string<_CharT, _Traits, _Allocator>& 2744>::type 2745basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos1, const _Tp& __t, 2746 size_type __pos2, size_type __n) 2747{ 2748 __self_view __sv = __t; 2749 size_type __str_sz = __sv.size(); 2750 if (__pos2 > __str_sz) 2751 this->__throw_out_of_range(); 2752 return insert(__pos1, __sv.data() + __pos2, _VSTD::min(__n, __str_sz - __pos2)); 2753} 2754 2755template <class _CharT, class _Traits, class _Allocator> 2756basic_string<_CharT, _Traits, _Allocator>& 2757basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos, const value_type* __s) 2758{ 2759 _LIBCPP_ASSERT(__s != nullptr, "string::insert received nullptr"); 2760 return insert(__pos, __s, traits_type::length(__s)); 2761} 2762 2763template <class _CharT, class _Traits, class _Allocator> 2764typename basic_string<_CharT, _Traits, _Allocator>::iterator 2765basic_string<_CharT, _Traits, _Allocator>::insert(const_iterator __pos, value_type __c) 2766{ 2767 size_type __ip = static_cast<size_type>(__pos - begin()); 2768 size_type __sz = size(); 2769 size_type __cap = capacity(); 2770 value_type* __p; 2771 if (__cap == __sz) 2772 { 2773 __grow_by(__cap, 1, __sz, __ip, 0, 1); 2774 __p = _VSTD::__to_address(__get_long_pointer()); 2775 } 2776 else 2777 { 2778 __p = _VSTD::__to_address(__get_pointer()); 2779 size_type __n_move = __sz - __ip; 2780 if (__n_move != 0) 2781 traits_type::move(__p + __ip + 1, __p + __ip, __n_move); 2782 } 2783 traits_type::assign(__p[__ip], __c); 2784 traits_type::assign(__p[++__sz], value_type()); 2785 __set_size(__sz); 2786 return begin() + static_cast<difference_type>(__ip); 2787} 2788 2789template <class _CharT, class _Traits, class _Allocator> 2790inline 2791typename basic_string<_CharT, _Traits, _Allocator>::iterator 2792basic_string<_CharT, _Traits, _Allocator>::insert(const_iterator __pos, size_type __n, value_type __c) 2793{ 2794#if _LIBCPP_DEBUG_LEVEL >= 2 2795 _LIBCPP_ASSERT(__get_const_db()->__find_c_from_i(&__pos) == this, 2796 "string::insert(iterator, n, value) called with an iterator not" 2797 " referring to this string"); 2798#endif 2799 difference_type __p = __pos - begin(); 2800 insert(static_cast<size_type>(__p), __n, __c); 2801 return begin() + __p; 2802} 2803 2804// replace 2805 2806template <class _CharT, class _Traits, class _Allocator> 2807basic_string<_CharT, _Traits, _Allocator>& 2808basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos, size_type __n1, const value_type* __s, size_type __n2) 2809 _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK 2810{ 2811 _LIBCPP_ASSERT(__n2 == 0 || __s != nullptr, "string::replace received nullptr"); 2812 size_type __sz = size(); 2813 if (__pos > __sz) 2814 this->__throw_out_of_range(); 2815 __n1 = _VSTD::min(__n1, __sz - __pos); 2816 size_type __cap = capacity(); 2817 if (__cap - __sz + __n1 >= __n2) 2818 { 2819 value_type* __p = _VSTD::__to_address(__get_pointer()); 2820 if (__n1 != __n2) 2821 { 2822 size_type __n_move = __sz - __pos - __n1; 2823 if (__n_move != 0) 2824 { 2825 if (__n1 > __n2) 2826 { 2827 traits_type::move(__p + __pos, __s, __n2); 2828 traits_type::move(__p + __pos + __n2, __p + __pos + __n1, __n_move); 2829 goto __finish; 2830 } 2831 if (__p + __pos < __s && __s < __p + __sz) 2832 { 2833 if (__p + __pos + __n1 <= __s) 2834 __s += __n2 - __n1; 2835 else // __p + __pos < __s < __p + __pos + __n1 2836 { 2837 traits_type::move(__p + __pos, __s, __n1); 2838 __pos += __n1; 2839 __s += __n2; 2840 __n2 -= __n1; 2841 __n1 = 0; 2842 } 2843 } 2844 traits_type::move(__p + __pos + __n2, __p + __pos + __n1, __n_move); 2845 } 2846 } 2847 traits_type::move(__p + __pos, __s, __n2); 2848__finish: 2849// __sz += __n2 - __n1; in this and the below function below can cause unsigned integer overflow, 2850// but this is a safe operation, so we disable the check. 2851 __sz += __n2 - __n1; 2852 __set_size(__sz); 2853 __invalidate_iterators_past(__sz); 2854 traits_type::assign(__p[__sz], value_type()); 2855 } 2856 else 2857 __grow_by_and_replace(__cap, __sz - __n1 + __n2 - __cap, __sz, __pos, __n1, __n2, __s); 2858 return *this; 2859} 2860 2861template <class _CharT, class _Traits, class _Allocator> 2862basic_string<_CharT, _Traits, _Allocator>& 2863basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos, size_type __n1, size_type __n2, value_type __c) 2864 _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK 2865{ 2866 size_type __sz = size(); 2867 if (__pos > __sz) 2868 this->__throw_out_of_range(); 2869 __n1 = _VSTD::min(__n1, __sz - __pos); 2870 size_type __cap = capacity(); 2871 value_type* __p; 2872 if (__cap - __sz + __n1 >= __n2) 2873 { 2874 __p = _VSTD::__to_address(__get_pointer()); 2875 if (__n1 != __n2) 2876 { 2877 size_type __n_move = __sz - __pos - __n1; 2878 if (__n_move != 0) 2879 traits_type::move(__p + __pos + __n2, __p + __pos + __n1, __n_move); 2880 } 2881 } 2882 else 2883 { 2884 __grow_by(__cap, __sz - __n1 + __n2 - __cap, __sz, __pos, __n1, __n2); 2885 __p = _VSTD::__to_address(__get_long_pointer()); 2886 } 2887 traits_type::assign(__p + __pos, __n2, __c); 2888 __sz += __n2 - __n1; 2889 __set_size(__sz); 2890 __invalidate_iterators_past(__sz); 2891 traits_type::assign(__p[__sz], value_type()); 2892 return *this; 2893} 2894 2895template <class _CharT, class _Traits, class _Allocator> 2896template<class _InputIterator> 2897typename enable_if 2898< 2899 __is_cpp17_input_iterator<_InputIterator>::value, 2900 basic_string<_CharT, _Traits, _Allocator>& 2901>::type 2902basic_string<_CharT, _Traits, _Allocator>::replace(const_iterator __i1, const_iterator __i2, 2903 _InputIterator __j1, _InputIterator __j2) 2904{ 2905 const basic_string __temp(__j1, __j2, __alloc()); 2906 return this->replace(__i1, __i2, __temp); 2907} 2908 2909template <class _CharT, class _Traits, class _Allocator> 2910inline 2911basic_string<_CharT, _Traits, _Allocator>& 2912basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos1, size_type __n1, const basic_string& __str) 2913{ 2914 return replace(__pos1, __n1, __str.data(), __str.size()); 2915} 2916 2917template <class _CharT, class _Traits, class _Allocator> 2918basic_string<_CharT, _Traits, _Allocator>& 2919basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos1, size_type __n1, const basic_string& __str, 2920 size_type __pos2, size_type __n2) 2921{ 2922 size_type __str_sz = __str.size(); 2923 if (__pos2 > __str_sz) 2924 this->__throw_out_of_range(); 2925 return replace(__pos1, __n1, __str.data() + __pos2, _VSTD::min(__n2, __str_sz - __pos2)); 2926} 2927 2928template <class _CharT, class _Traits, class _Allocator> 2929template <class _Tp> 2930typename enable_if 2931< 2932 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 2933 basic_string<_CharT, _Traits, _Allocator>& 2934>::type 2935basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos1, size_type __n1, const _Tp& __t, 2936 size_type __pos2, size_type __n2) 2937{ 2938 __self_view __sv = __t; 2939 size_type __str_sz = __sv.size(); 2940 if (__pos2 > __str_sz) 2941 this->__throw_out_of_range(); 2942 return replace(__pos1, __n1, __sv.data() + __pos2, _VSTD::min(__n2, __str_sz - __pos2)); 2943} 2944 2945template <class _CharT, class _Traits, class _Allocator> 2946basic_string<_CharT, _Traits, _Allocator>& 2947basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos, size_type __n1, const value_type* __s) 2948{ 2949 _LIBCPP_ASSERT(__s != nullptr, "string::replace received nullptr"); 2950 return replace(__pos, __n1, __s, traits_type::length(__s)); 2951} 2952 2953template <class _CharT, class _Traits, class _Allocator> 2954inline 2955basic_string<_CharT, _Traits, _Allocator>& 2956basic_string<_CharT, _Traits, _Allocator>::replace(const_iterator __i1, const_iterator __i2, const basic_string& __str) 2957{ 2958 return replace(static_cast<size_type>(__i1 - begin()), static_cast<size_type>(__i2 - __i1), 2959 __str.data(), __str.size()); 2960} 2961 2962template <class _CharT, class _Traits, class _Allocator> 2963inline 2964basic_string<_CharT, _Traits, _Allocator>& 2965basic_string<_CharT, _Traits, _Allocator>::replace(const_iterator __i1, const_iterator __i2, const value_type* __s, size_type __n) 2966{ 2967 return replace(static_cast<size_type>(__i1 - begin()), static_cast<size_type>(__i2 - __i1), __s, __n); 2968} 2969 2970template <class _CharT, class _Traits, class _Allocator> 2971inline 2972basic_string<_CharT, _Traits, _Allocator>& 2973basic_string<_CharT, _Traits, _Allocator>::replace(const_iterator __i1, const_iterator __i2, const value_type* __s) 2974{ 2975 return replace(static_cast<size_type>(__i1 - begin()), static_cast<size_type>(__i2 - __i1), __s); 2976} 2977 2978template <class _CharT, class _Traits, class _Allocator> 2979inline 2980basic_string<_CharT, _Traits, _Allocator>& 2981basic_string<_CharT, _Traits, _Allocator>::replace(const_iterator __i1, const_iterator __i2, size_type __n, value_type __c) 2982{ 2983 return replace(static_cast<size_type>(__i1 - begin()), static_cast<size_type>(__i2 - __i1), __n, __c); 2984} 2985 2986// erase 2987 2988template <class _CharT, class _Traits, class _Allocator> 2989basic_string<_CharT, _Traits, _Allocator>& 2990basic_string<_CharT, _Traits, _Allocator>::erase(size_type __pos, size_type __n) 2991{ 2992 size_type __sz = size(); 2993 if (__pos > __sz) 2994 this->__throw_out_of_range(); 2995 if (__n) 2996 { 2997 value_type* __p = _VSTD::__to_address(__get_pointer()); 2998 __n = _VSTD::min(__n, __sz - __pos); 2999 size_type __n_move = __sz - __pos - __n; 3000 if (__n_move != 0) 3001 traits_type::move(__p + __pos, __p + __pos + __n, __n_move); 3002 __sz -= __n; 3003 __set_size(__sz); 3004 __invalidate_iterators_past(__sz); 3005 traits_type::assign(__p[__sz], value_type()); 3006 } 3007 return *this; 3008} 3009 3010template <class _CharT, class _Traits, class _Allocator> 3011inline 3012typename basic_string<_CharT, _Traits, _Allocator>::iterator 3013basic_string<_CharT, _Traits, _Allocator>::erase(const_iterator __pos) 3014{ 3015#if _LIBCPP_DEBUG_LEVEL >= 2 3016 _LIBCPP_ASSERT(__get_const_db()->__find_c_from_i(&__pos) == this, 3017 "string::erase(iterator) called with an iterator not" 3018 " referring to this string"); 3019#endif 3020 _LIBCPP_ASSERT(__pos != end(), 3021 "string::erase(iterator) called with a non-dereferenceable iterator"); 3022 iterator __b = begin(); 3023 size_type __r = static_cast<size_type>(__pos - __b); 3024 erase(__r, 1); 3025 return __b + static_cast<difference_type>(__r); 3026} 3027 3028template <class _CharT, class _Traits, class _Allocator> 3029inline 3030typename basic_string<_CharT, _Traits, _Allocator>::iterator 3031basic_string<_CharT, _Traits, _Allocator>::erase(const_iterator __first, const_iterator __last) 3032{ 3033#if _LIBCPP_DEBUG_LEVEL >= 2 3034 _LIBCPP_ASSERT(__get_const_db()->__find_c_from_i(&__first) == this, 3035 "string::erase(iterator, iterator) called with an iterator not" 3036 " referring to this string"); 3037#endif 3038 _LIBCPP_ASSERT(__first <= __last, "string::erase(first, last) called with invalid range"); 3039 iterator __b = begin(); 3040 size_type __r = static_cast<size_type>(__first - __b); 3041 erase(__r, static_cast<size_type>(__last - __first)); 3042 return __b + static_cast<difference_type>(__r); 3043} 3044 3045template <class _CharT, class _Traits, class _Allocator> 3046inline 3047void 3048basic_string<_CharT, _Traits, _Allocator>::pop_back() 3049{ 3050 _LIBCPP_ASSERT(!empty(), "string::pop_back(): string is already empty"); 3051 size_type __sz; 3052 if (__is_long()) 3053 { 3054 __sz = __get_long_size() - 1; 3055 __set_long_size(__sz); 3056 traits_type::assign(*(__get_long_pointer() + __sz), value_type()); 3057 } 3058 else 3059 { 3060 __sz = __get_short_size() - 1; 3061 __set_short_size(__sz); 3062 traits_type::assign(*(__get_short_pointer() + __sz), value_type()); 3063 } 3064 __invalidate_iterators_past(__sz); 3065} 3066 3067template <class _CharT, class _Traits, class _Allocator> 3068inline 3069void 3070basic_string<_CharT, _Traits, _Allocator>::clear() _NOEXCEPT 3071{ 3072 __invalidate_all_iterators(); 3073 if (__is_long()) 3074 { 3075 traits_type::assign(*__get_long_pointer(), value_type()); 3076 __set_long_size(0); 3077 } 3078 else 3079 { 3080 traits_type::assign(*__get_short_pointer(), value_type()); 3081 __set_short_size(0); 3082 } 3083} 3084 3085template <class _CharT, class _Traits, class _Allocator> 3086inline 3087void 3088basic_string<_CharT, _Traits, _Allocator>::__erase_to_end(size_type __pos) 3089{ 3090 if (__is_long()) 3091 { 3092 traits_type::assign(*(__get_long_pointer() + __pos), value_type()); 3093 __set_long_size(__pos); 3094 } 3095 else 3096 { 3097 traits_type::assign(*(__get_short_pointer() + __pos), value_type()); 3098 __set_short_size(__pos); 3099 } 3100 __invalidate_iterators_past(__pos); 3101} 3102 3103template <class _CharT, class _Traits, class _Allocator> 3104void 3105basic_string<_CharT, _Traits, _Allocator>::resize(size_type __n, value_type __c) 3106{ 3107 size_type __sz = size(); 3108 if (__n > __sz) 3109 append(__n - __sz, __c); 3110 else 3111 __erase_to_end(__n); 3112} 3113 3114template <class _CharT, class _Traits, class _Allocator> 3115inline void 3116basic_string<_CharT, _Traits, _Allocator>::__resize_default_init(size_type __n) 3117{ 3118 size_type __sz = size(); 3119 if (__n > __sz) { 3120 __append_default_init(__n - __sz); 3121 } else 3122 __erase_to_end(__n); 3123} 3124 3125template <class _CharT, class _Traits, class _Allocator> 3126inline 3127typename basic_string<_CharT, _Traits, _Allocator>::size_type 3128basic_string<_CharT, _Traits, _Allocator>::max_size() const _NOEXCEPT 3129{ 3130 size_type __m = __alloc_traits::max_size(__alloc()); 3131#ifdef _LIBCPP_BIG_ENDIAN 3132 return (__m <= ~__long_mask ? __m : __m/2) - __alignment; 3133#else 3134 return __m - __alignment; 3135#endif 3136} 3137 3138template <class _CharT, class _Traits, class _Allocator> 3139void 3140basic_string<_CharT, _Traits, _Allocator>::reserve(size_type __res_arg) 3141{ 3142 if (__res_arg > max_size()) 3143 this->__throw_length_error(); 3144 size_type __cap = capacity(); 3145 size_type __sz = size(); 3146 __res_arg = _VSTD::max(__res_arg, __sz); 3147 __res_arg = __recommend(__res_arg); 3148 if (__res_arg != __cap) 3149 { 3150 pointer __new_data, __p; 3151 bool __was_long, __now_long; 3152 if (__res_arg == __min_cap - 1) 3153 { 3154 __was_long = true; 3155 __now_long = false; 3156 __new_data = __get_short_pointer(); 3157 __p = __get_long_pointer(); 3158 } 3159 else 3160 { 3161 if (__res_arg > __cap) 3162 __new_data = __alloc_traits::allocate(__alloc(), __res_arg+1); 3163 else 3164 { 3165 #ifndef _LIBCPP_NO_EXCEPTIONS 3166 try 3167 { 3168 #endif // _LIBCPP_NO_EXCEPTIONS 3169 __new_data = __alloc_traits::allocate(__alloc(), __res_arg+1); 3170 #ifndef _LIBCPP_NO_EXCEPTIONS 3171 } 3172 catch (...) 3173 { 3174 return; 3175 } 3176 #else // _LIBCPP_NO_EXCEPTIONS 3177 if (__new_data == nullptr) 3178 return; 3179 #endif // _LIBCPP_NO_EXCEPTIONS 3180 } 3181 __now_long = true; 3182 __was_long = __is_long(); 3183 __p = __get_pointer(); 3184 } 3185 traits_type::copy(_VSTD::__to_address(__new_data), 3186 _VSTD::__to_address(__p), size()+1); 3187 if (__was_long) 3188 __alloc_traits::deallocate(__alloc(), __p, __cap+1); 3189 if (__now_long) 3190 { 3191 __set_long_cap(__res_arg+1); 3192 __set_long_size(__sz); 3193 __set_long_pointer(__new_data); 3194 } 3195 else 3196 __set_short_size(__sz); 3197 __invalidate_all_iterators(); 3198 } 3199} 3200 3201template <class _CharT, class _Traits, class _Allocator> 3202inline 3203typename basic_string<_CharT, _Traits, _Allocator>::const_reference 3204basic_string<_CharT, _Traits, _Allocator>::operator[](size_type __pos) const _NOEXCEPT 3205{ 3206 _LIBCPP_ASSERT(__pos <= size(), "string index out of bounds"); 3207 return *(data() + __pos); 3208} 3209 3210template <class _CharT, class _Traits, class _Allocator> 3211inline 3212typename basic_string<_CharT, _Traits, _Allocator>::reference 3213basic_string<_CharT, _Traits, _Allocator>::operator[](size_type __pos) _NOEXCEPT 3214{ 3215 _LIBCPP_ASSERT(__pos <= size(), "string index out of bounds"); 3216 return *(__get_pointer() + __pos); 3217} 3218 3219template <class _CharT, class _Traits, class _Allocator> 3220typename basic_string<_CharT, _Traits, _Allocator>::const_reference 3221basic_string<_CharT, _Traits, _Allocator>::at(size_type __n) const 3222{ 3223 if (__n >= size()) 3224 this->__throw_out_of_range(); 3225 return (*this)[__n]; 3226} 3227 3228template <class _CharT, class _Traits, class _Allocator> 3229typename basic_string<_CharT, _Traits, _Allocator>::reference 3230basic_string<_CharT, _Traits, _Allocator>::at(size_type __n) 3231{ 3232 if (__n >= size()) 3233 this->__throw_out_of_range(); 3234 return (*this)[__n]; 3235} 3236 3237template <class _CharT, class _Traits, class _Allocator> 3238inline 3239typename basic_string<_CharT, _Traits, _Allocator>::reference 3240basic_string<_CharT, _Traits, _Allocator>::front() _NOEXCEPT 3241{ 3242 _LIBCPP_ASSERT(!empty(), "string::front(): string is empty"); 3243 return *__get_pointer(); 3244} 3245 3246template <class _CharT, class _Traits, class _Allocator> 3247inline 3248typename basic_string<_CharT, _Traits, _Allocator>::const_reference 3249basic_string<_CharT, _Traits, _Allocator>::front() const _NOEXCEPT 3250{ 3251 _LIBCPP_ASSERT(!empty(), "string::front(): string is empty"); 3252 return *data(); 3253} 3254 3255template <class _CharT, class _Traits, class _Allocator> 3256inline 3257typename basic_string<_CharT, _Traits, _Allocator>::reference 3258basic_string<_CharT, _Traits, _Allocator>::back() _NOEXCEPT 3259{ 3260 _LIBCPP_ASSERT(!empty(), "string::back(): string is empty"); 3261 return *(__get_pointer() + size() - 1); 3262} 3263 3264template <class _CharT, class _Traits, class _Allocator> 3265inline 3266typename basic_string<_CharT, _Traits, _Allocator>::const_reference 3267basic_string<_CharT, _Traits, _Allocator>::back() const _NOEXCEPT 3268{ 3269 _LIBCPP_ASSERT(!empty(), "string::back(): string is empty"); 3270 return *(data() + size() - 1); 3271} 3272 3273template <class _CharT, class _Traits, class _Allocator> 3274typename basic_string<_CharT, _Traits, _Allocator>::size_type 3275basic_string<_CharT, _Traits, _Allocator>::copy(value_type* __s, size_type __n, size_type __pos) const 3276{ 3277 size_type __sz = size(); 3278 if (__pos > __sz) 3279 this->__throw_out_of_range(); 3280 size_type __rlen = _VSTD::min(__n, __sz - __pos); 3281 traits_type::copy(__s, data() + __pos, __rlen); 3282 return __rlen; 3283} 3284 3285template <class _CharT, class _Traits, class _Allocator> 3286inline 3287basic_string<_CharT, _Traits, _Allocator> 3288basic_string<_CharT, _Traits, _Allocator>::substr(size_type __pos, size_type __n) const 3289{ 3290 return basic_string(*this, __pos, __n, __alloc()); 3291} 3292 3293template <class _CharT, class _Traits, class _Allocator> 3294inline 3295void 3296basic_string<_CharT, _Traits, _Allocator>::swap(basic_string& __str) 3297#if _LIBCPP_STD_VER >= 14 3298 _NOEXCEPT 3299#else 3300 _NOEXCEPT_(!__alloc_traits::propagate_on_container_swap::value || 3301 __is_nothrow_swappable<allocator_type>::value) 3302#endif 3303{ 3304#if _LIBCPP_DEBUG_LEVEL >= 2 3305 if (!__is_long()) 3306 __get_db()->__invalidate_all(this); 3307 if (!__str.__is_long()) 3308 __get_db()->__invalidate_all(&__str); 3309 __get_db()->swap(this, &__str); 3310#endif 3311 _LIBCPP_ASSERT( 3312 __alloc_traits::propagate_on_container_swap::value || 3313 __alloc_traits::is_always_equal::value || 3314 __alloc() == __str.__alloc(), "swapping non-equal allocators"); 3315 _VSTD::swap(__r_.first(), __str.__r_.first()); 3316 __swap_allocator(__alloc(), __str.__alloc()); 3317} 3318 3319// find 3320 3321template <class _Traits> 3322struct _LIBCPP_HIDDEN __traits_eq 3323{ 3324 typedef typename _Traits::char_type char_type; 3325 _LIBCPP_INLINE_VISIBILITY 3326 bool operator()(const char_type& __x, const char_type& __y) _NOEXCEPT 3327 {return _Traits::eq(__x, __y);} 3328}; 3329 3330template<class _CharT, class _Traits, class _Allocator> 3331typename basic_string<_CharT, _Traits, _Allocator>::size_type 3332basic_string<_CharT, _Traits, _Allocator>::find(const value_type* __s, 3333 size_type __pos, 3334 size_type __n) const _NOEXCEPT 3335{ 3336 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::find(): received nullptr"); 3337 return __str_find<value_type, size_type, traits_type, npos> 3338 (data(), size(), __s, __pos, __n); 3339} 3340 3341template<class _CharT, class _Traits, class _Allocator> 3342inline 3343typename basic_string<_CharT, _Traits, _Allocator>::size_type 3344basic_string<_CharT, _Traits, _Allocator>::find(const basic_string& __str, 3345 size_type __pos) const _NOEXCEPT 3346{ 3347 return __str_find<value_type, size_type, traits_type, npos> 3348 (data(), size(), __str.data(), __pos, __str.size()); 3349} 3350 3351template<class _CharT, class _Traits, class _Allocator> 3352template <class _Tp> 3353typename enable_if 3354< 3355 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3356 typename basic_string<_CharT, _Traits, _Allocator>::size_type 3357>::type 3358basic_string<_CharT, _Traits, _Allocator>::find(const _Tp &__t, 3359 size_type __pos) const 3360{ 3361 __self_view __sv = __t; 3362 return __str_find<value_type, size_type, traits_type, npos> 3363 (data(), size(), __sv.data(), __pos, __sv.size()); 3364} 3365 3366template<class _CharT, class _Traits, class _Allocator> 3367inline 3368typename basic_string<_CharT, _Traits, _Allocator>::size_type 3369basic_string<_CharT, _Traits, _Allocator>::find(const value_type* __s, 3370 size_type __pos) const _NOEXCEPT 3371{ 3372 _LIBCPP_ASSERT(__s != nullptr, "string::find(): received nullptr"); 3373 return __str_find<value_type, size_type, traits_type, npos> 3374 (data(), size(), __s, __pos, traits_type::length(__s)); 3375} 3376 3377template<class _CharT, class _Traits, class _Allocator> 3378typename basic_string<_CharT, _Traits, _Allocator>::size_type 3379basic_string<_CharT, _Traits, _Allocator>::find(value_type __c, 3380 size_type __pos) const _NOEXCEPT 3381{ 3382 return __str_find<value_type, size_type, traits_type, npos> 3383 (data(), size(), __c, __pos); 3384} 3385 3386// rfind 3387 3388template<class _CharT, class _Traits, class _Allocator> 3389typename basic_string<_CharT, _Traits, _Allocator>::size_type 3390basic_string<_CharT, _Traits, _Allocator>::rfind(const value_type* __s, 3391 size_type __pos, 3392 size_type __n) const _NOEXCEPT 3393{ 3394 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::rfind(): received nullptr"); 3395 return __str_rfind<value_type, size_type, traits_type, npos> 3396 (data(), size(), __s, __pos, __n); 3397} 3398 3399template<class _CharT, class _Traits, class _Allocator> 3400inline 3401typename basic_string<_CharT, _Traits, _Allocator>::size_type 3402basic_string<_CharT, _Traits, _Allocator>::rfind(const basic_string& __str, 3403 size_type __pos) const _NOEXCEPT 3404{ 3405 return __str_rfind<value_type, size_type, traits_type, npos> 3406 (data(), size(), __str.data(), __pos, __str.size()); 3407} 3408 3409template<class _CharT, class _Traits, class _Allocator> 3410template <class _Tp> 3411typename enable_if 3412< 3413 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3414 typename basic_string<_CharT, _Traits, _Allocator>::size_type 3415>::type 3416basic_string<_CharT, _Traits, _Allocator>::rfind(const _Tp& __t, 3417 size_type __pos) const 3418{ 3419 __self_view __sv = __t; 3420 return __str_rfind<value_type, size_type, traits_type, npos> 3421 (data(), size(), __sv.data(), __pos, __sv.size()); 3422} 3423 3424template<class _CharT, class _Traits, class _Allocator> 3425inline 3426typename basic_string<_CharT, _Traits, _Allocator>::size_type 3427basic_string<_CharT, _Traits, _Allocator>::rfind(const value_type* __s, 3428 size_type __pos) const _NOEXCEPT 3429{ 3430 _LIBCPP_ASSERT(__s != nullptr, "string::rfind(): received nullptr"); 3431 return __str_rfind<value_type, size_type, traits_type, npos> 3432 (data(), size(), __s, __pos, traits_type::length(__s)); 3433} 3434 3435template<class _CharT, class _Traits, class _Allocator> 3436typename basic_string<_CharT, _Traits, _Allocator>::size_type 3437basic_string<_CharT, _Traits, _Allocator>::rfind(value_type __c, 3438 size_type __pos) const _NOEXCEPT 3439{ 3440 return __str_rfind<value_type, size_type, traits_type, npos> 3441 (data(), size(), __c, __pos); 3442} 3443 3444// find_first_of 3445 3446template<class _CharT, class _Traits, class _Allocator> 3447typename basic_string<_CharT, _Traits, _Allocator>::size_type 3448basic_string<_CharT, _Traits, _Allocator>::find_first_of(const value_type* __s, 3449 size_type __pos, 3450 size_type __n) const _NOEXCEPT 3451{ 3452 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::find_first_of(): received nullptr"); 3453 return __str_find_first_of<value_type, size_type, traits_type, npos> 3454 (data(), size(), __s, __pos, __n); 3455} 3456 3457template<class _CharT, class _Traits, class _Allocator> 3458inline 3459typename basic_string<_CharT, _Traits, _Allocator>::size_type 3460basic_string<_CharT, _Traits, _Allocator>::find_first_of(const basic_string& __str, 3461 size_type __pos) const _NOEXCEPT 3462{ 3463 return __str_find_first_of<value_type, size_type, traits_type, npos> 3464 (data(), size(), __str.data(), __pos, __str.size()); 3465} 3466 3467template<class _CharT, class _Traits, class _Allocator> 3468template <class _Tp> 3469typename enable_if 3470< 3471 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3472 typename basic_string<_CharT, _Traits, _Allocator>::size_type 3473>::type 3474basic_string<_CharT, _Traits, _Allocator>::find_first_of(const _Tp& __t, 3475 size_type __pos) const 3476{ 3477 __self_view __sv = __t; 3478 return __str_find_first_of<value_type, size_type, traits_type, npos> 3479 (data(), size(), __sv.data(), __pos, __sv.size()); 3480} 3481 3482template<class _CharT, class _Traits, class _Allocator> 3483inline 3484typename basic_string<_CharT, _Traits, _Allocator>::size_type 3485basic_string<_CharT, _Traits, _Allocator>::find_first_of(const value_type* __s, 3486 size_type __pos) const _NOEXCEPT 3487{ 3488 _LIBCPP_ASSERT(__s != nullptr, "string::find_first_of(): received nullptr"); 3489 return __str_find_first_of<value_type, size_type, traits_type, npos> 3490 (data(), size(), __s, __pos, traits_type::length(__s)); 3491} 3492 3493template<class _CharT, class _Traits, class _Allocator> 3494inline 3495typename basic_string<_CharT, _Traits, _Allocator>::size_type 3496basic_string<_CharT, _Traits, _Allocator>::find_first_of(value_type __c, 3497 size_type __pos) const _NOEXCEPT 3498{ 3499 return find(__c, __pos); 3500} 3501 3502// find_last_of 3503 3504template<class _CharT, class _Traits, class _Allocator> 3505typename basic_string<_CharT, _Traits, _Allocator>::size_type 3506basic_string<_CharT, _Traits, _Allocator>::find_last_of(const value_type* __s, 3507 size_type __pos, 3508 size_type __n) const _NOEXCEPT 3509{ 3510 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::find_last_of(): received nullptr"); 3511 return __str_find_last_of<value_type, size_type, traits_type, npos> 3512 (data(), size(), __s, __pos, __n); 3513} 3514 3515template<class _CharT, class _Traits, class _Allocator> 3516inline 3517typename basic_string<_CharT, _Traits, _Allocator>::size_type 3518basic_string<_CharT, _Traits, _Allocator>::find_last_of(const basic_string& __str, 3519 size_type __pos) const _NOEXCEPT 3520{ 3521 return __str_find_last_of<value_type, size_type, traits_type, npos> 3522 (data(), size(), __str.data(), __pos, __str.size()); 3523} 3524 3525template<class _CharT, class _Traits, class _Allocator> 3526template <class _Tp> 3527typename enable_if 3528< 3529 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3530 typename basic_string<_CharT, _Traits, _Allocator>::size_type 3531>::type 3532basic_string<_CharT, _Traits, _Allocator>::find_last_of(const _Tp& __t, 3533 size_type __pos) const 3534{ 3535 __self_view __sv = __t; 3536 return __str_find_last_of<value_type, size_type, traits_type, npos> 3537 (data(), size(), __sv.data(), __pos, __sv.size()); 3538} 3539 3540template<class _CharT, class _Traits, class _Allocator> 3541inline 3542typename basic_string<_CharT, _Traits, _Allocator>::size_type 3543basic_string<_CharT, _Traits, _Allocator>::find_last_of(const value_type* __s, 3544 size_type __pos) const _NOEXCEPT 3545{ 3546 _LIBCPP_ASSERT(__s != nullptr, "string::find_last_of(): received nullptr"); 3547 return __str_find_last_of<value_type, size_type, traits_type, npos> 3548 (data(), size(), __s, __pos, traits_type::length(__s)); 3549} 3550 3551template<class _CharT, class _Traits, class _Allocator> 3552inline 3553typename basic_string<_CharT, _Traits, _Allocator>::size_type 3554basic_string<_CharT, _Traits, _Allocator>::find_last_of(value_type __c, 3555 size_type __pos) const _NOEXCEPT 3556{ 3557 return rfind(__c, __pos); 3558} 3559 3560// find_first_not_of 3561 3562template<class _CharT, class _Traits, class _Allocator> 3563typename basic_string<_CharT, _Traits, _Allocator>::size_type 3564basic_string<_CharT, _Traits, _Allocator>::find_first_not_of(const value_type* __s, 3565 size_type __pos, 3566 size_type __n) const _NOEXCEPT 3567{ 3568 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::find_first_not_of(): received nullptr"); 3569 return __str_find_first_not_of<value_type, size_type, traits_type, npos> 3570 (data(), size(), __s, __pos, __n); 3571} 3572 3573template<class _CharT, class _Traits, class _Allocator> 3574inline 3575typename basic_string<_CharT, _Traits, _Allocator>::size_type 3576basic_string<_CharT, _Traits, _Allocator>::find_first_not_of(const basic_string& __str, 3577 size_type __pos) const _NOEXCEPT 3578{ 3579 return __str_find_first_not_of<value_type, size_type, traits_type, npos> 3580 (data(), size(), __str.data(), __pos, __str.size()); 3581} 3582 3583template<class _CharT, class _Traits, class _Allocator> 3584template <class _Tp> 3585typename enable_if 3586< 3587 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3588 typename basic_string<_CharT, _Traits, _Allocator>::size_type 3589>::type 3590basic_string<_CharT, _Traits, _Allocator>::find_first_not_of(const _Tp& __t, 3591 size_type __pos) const 3592{ 3593 __self_view __sv = __t; 3594 return __str_find_first_not_of<value_type, size_type, traits_type, npos> 3595 (data(), size(), __sv.data(), __pos, __sv.size()); 3596} 3597 3598template<class _CharT, class _Traits, class _Allocator> 3599inline 3600typename basic_string<_CharT, _Traits, _Allocator>::size_type 3601basic_string<_CharT, _Traits, _Allocator>::find_first_not_of(const value_type* __s, 3602 size_type __pos) const _NOEXCEPT 3603{ 3604 _LIBCPP_ASSERT(__s != nullptr, "string::find_first_not_of(): received nullptr"); 3605 return __str_find_first_not_of<value_type, size_type, traits_type, npos> 3606 (data(), size(), __s, __pos, traits_type::length(__s)); 3607} 3608 3609template<class _CharT, class _Traits, class _Allocator> 3610inline 3611typename basic_string<_CharT, _Traits, _Allocator>::size_type 3612basic_string<_CharT, _Traits, _Allocator>::find_first_not_of(value_type __c, 3613 size_type __pos) const _NOEXCEPT 3614{ 3615 return __str_find_first_not_of<value_type, size_type, traits_type, npos> 3616 (data(), size(), __c, __pos); 3617} 3618 3619// find_last_not_of 3620 3621template<class _CharT, class _Traits, class _Allocator> 3622typename basic_string<_CharT, _Traits, _Allocator>::size_type 3623basic_string<_CharT, _Traits, _Allocator>::find_last_not_of(const value_type* __s, 3624 size_type __pos, 3625 size_type __n) const _NOEXCEPT 3626{ 3627 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::find_last_not_of(): received nullptr"); 3628 return __str_find_last_not_of<value_type, size_type, traits_type, npos> 3629 (data(), size(), __s, __pos, __n); 3630} 3631 3632template<class _CharT, class _Traits, class _Allocator> 3633inline 3634typename basic_string<_CharT, _Traits, _Allocator>::size_type 3635basic_string<_CharT, _Traits, _Allocator>::find_last_not_of(const basic_string& __str, 3636 size_type __pos) const _NOEXCEPT 3637{ 3638 return __str_find_last_not_of<value_type, size_type, traits_type, npos> 3639 (data(), size(), __str.data(), __pos, __str.size()); 3640} 3641 3642template<class _CharT, class _Traits, class _Allocator> 3643template <class _Tp> 3644typename enable_if 3645< 3646 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3647 typename basic_string<_CharT, _Traits, _Allocator>::size_type 3648>::type 3649basic_string<_CharT, _Traits, _Allocator>::find_last_not_of(const _Tp& __t, 3650 size_type __pos) const 3651{ 3652 __self_view __sv = __t; 3653 return __str_find_last_not_of<value_type, size_type, traits_type, npos> 3654 (data(), size(), __sv.data(), __pos, __sv.size()); 3655} 3656 3657template<class _CharT, class _Traits, class _Allocator> 3658inline 3659typename basic_string<_CharT, _Traits, _Allocator>::size_type 3660basic_string<_CharT, _Traits, _Allocator>::find_last_not_of(const value_type* __s, 3661 size_type __pos) const _NOEXCEPT 3662{ 3663 _LIBCPP_ASSERT(__s != nullptr, "string::find_last_not_of(): received nullptr"); 3664 return __str_find_last_not_of<value_type, size_type, traits_type, npos> 3665 (data(), size(), __s, __pos, traits_type::length(__s)); 3666} 3667 3668template<class _CharT, class _Traits, class _Allocator> 3669inline 3670typename basic_string<_CharT, _Traits, _Allocator>::size_type 3671basic_string<_CharT, _Traits, _Allocator>::find_last_not_of(value_type __c, 3672 size_type __pos) const _NOEXCEPT 3673{ 3674 return __str_find_last_not_of<value_type, size_type, traits_type, npos> 3675 (data(), size(), __c, __pos); 3676} 3677 3678// compare 3679 3680template <class _CharT, class _Traits, class _Allocator> 3681template <class _Tp> 3682typename enable_if 3683< 3684 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3685 int 3686>::type 3687basic_string<_CharT, _Traits, _Allocator>::compare(const _Tp& __t) const 3688{ 3689 __self_view __sv = __t; 3690 size_t __lhs_sz = size(); 3691 size_t __rhs_sz = __sv.size(); 3692 int __result = traits_type::compare(data(), __sv.data(), 3693 _VSTD::min(__lhs_sz, __rhs_sz)); 3694 if (__result != 0) 3695 return __result; 3696 if (__lhs_sz < __rhs_sz) 3697 return -1; 3698 if (__lhs_sz > __rhs_sz) 3699 return 1; 3700 return 0; 3701} 3702 3703template <class _CharT, class _Traits, class _Allocator> 3704inline 3705int 3706basic_string<_CharT, _Traits, _Allocator>::compare(const basic_string& __str) const _NOEXCEPT 3707{ 3708 return compare(__self_view(__str)); 3709} 3710 3711template <class _CharT, class _Traits, class _Allocator> 3712int 3713basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1, 3714 size_type __n1, 3715 const value_type* __s, 3716 size_type __n2) const 3717{ 3718 _LIBCPP_ASSERT(__n2 == 0 || __s != nullptr, "string::compare(): received nullptr"); 3719 size_type __sz = size(); 3720 if (__pos1 > __sz || __n2 == npos) 3721 this->__throw_out_of_range(); 3722 size_type __rlen = _VSTD::min(__n1, __sz - __pos1); 3723 int __r = traits_type::compare(data() + __pos1, __s, _VSTD::min(__rlen, __n2)); 3724 if (__r == 0) 3725 { 3726 if (__rlen < __n2) 3727 __r = -1; 3728 else if (__rlen > __n2) 3729 __r = 1; 3730 } 3731 return __r; 3732} 3733 3734template <class _CharT, class _Traits, class _Allocator> 3735template <class _Tp> 3736typename enable_if 3737< 3738 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3739 int 3740>::type 3741basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1, 3742 size_type __n1, 3743 const _Tp& __t) const 3744{ 3745 __self_view __sv = __t; 3746 return compare(__pos1, __n1, __sv.data(), __sv.size()); 3747} 3748 3749template <class _CharT, class _Traits, class _Allocator> 3750inline 3751int 3752basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1, 3753 size_type __n1, 3754 const basic_string& __str) const 3755{ 3756 return compare(__pos1, __n1, __str.data(), __str.size()); 3757} 3758 3759template <class _CharT, class _Traits, class _Allocator> 3760template <class _Tp> 3761typename enable_if 3762< 3763 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3764 int 3765>::type 3766basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1, 3767 size_type __n1, 3768 const _Tp& __t, 3769 size_type __pos2, 3770 size_type __n2) const 3771{ 3772 __self_view __sv = __t; 3773 return __self_view(*this).substr(__pos1, __n1).compare(__sv.substr(__pos2, __n2)); 3774} 3775 3776template <class _CharT, class _Traits, class _Allocator> 3777int 3778basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1, 3779 size_type __n1, 3780 const basic_string& __str, 3781 size_type __pos2, 3782 size_type __n2) const 3783{ 3784 return compare(__pos1, __n1, __self_view(__str), __pos2, __n2); 3785} 3786 3787template <class _CharT, class _Traits, class _Allocator> 3788int 3789basic_string<_CharT, _Traits, _Allocator>::compare(const value_type* __s) const _NOEXCEPT 3790{ 3791 _LIBCPP_ASSERT(__s != nullptr, "string::compare(): received nullptr"); 3792 return compare(0, npos, __s, traits_type::length(__s)); 3793} 3794 3795template <class _CharT, class _Traits, class _Allocator> 3796int 3797basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1, 3798 size_type __n1, 3799 const value_type* __s) const 3800{ 3801 _LIBCPP_ASSERT(__s != nullptr, "string::compare(): received nullptr"); 3802 return compare(__pos1, __n1, __s, traits_type::length(__s)); 3803} 3804 3805// __invariants 3806 3807template<class _CharT, class _Traits, class _Allocator> 3808inline 3809bool 3810basic_string<_CharT, _Traits, _Allocator>::__invariants() const 3811{ 3812 if (size() > capacity()) 3813 return false; 3814 if (capacity() < __min_cap - 1) 3815 return false; 3816 if (data() == 0) 3817 return false; 3818 if (data()[size()] != value_type(0)) 3819 return false; 3820 return true; 3821} 3822 3823// __clear_and_shrink 3824 3825template<class _CharT, class _Traits, class _Allocator> 3826inline 3827void 3828basic_string<_CharT, _Traits, _Allocator>::__clear_and_shrink() _NOEXCEPT 3829{ 3830 clear(); 3831 if(__is_long()) 3832 { 3833 __alloc_traits::deallocate(__alloc(), __get_long_pointer(), capacity() + 1); 3834 __set_long_cap(0); 3835 __set_short_size(0); 3836 } 3837} 3838 3839// operator== 3840 3841template<class _CharT, class _Traits, class _Allocator> 3842inline _LIBCPP_INLINE_VISIBILITY 3843bool 3844operator==(const basic_string<_CharT, _Traits, _Allocator>& __lhs, 3845 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 3846{ 3847 size_t __lhs_sz = __lhs.size(); 3848 return __lhs_sz == __rhs.size() && _Traits::compare(__lhs.data(), 3849 __rhs.data(), 3850 __lhs_sz) == 0; 3851} 3852 3853template<class _Allocator> 3854inline _LIBCPP_INLINE_VISIBILITY 3855bool 3856operator==(const basic_string<char, char_traits<char>, _Allocator>& __lhs, 3857 const basic_string<char, char_traits<char>, _Allocator>& __rhs) _NOEXCEPT 3858{ 3859 size_t __lhs_sz = __lhs.size(); 3860 if (__lhs_sz != __rhs.size()) 3861 return false; 3862 const char* __lp = __lhs.data(); 3863 const char* __rp = __rhs.data(); 3864 if (__lhs.__is_long()) 3865 return char_traits<char>::compare(__lp, __rp, __lhs_sz) == 0; 3866 for (; __lhs_sz != 0; --__lhs_sz, ++__lp, ++__rp) 3867 if (*__lp != *__rp) 3868 return false; 3869 return true; 3870} 3871 3872template<class _CharT, class _Traits, class _Allocator> 3873inline _LIBCPP_INLINE_VISIBILITY 3874bool 3875operator==(const _CharT* __lhs, 3876 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 3877{ 3878 typedef basic_string<_CharT, _Traits, _Allocator> _String; 3879 _LIBCPP_ASSERT(__lhs != nullptr, "operator==(char*, basic_string): received nullptr"); 3880 size_t __lhs_len = _Traits::length(__lhs); 3881 if (__lhs_len != __rhs.size()) return false; 3882 return __rhs.compare(0, _String::npos, __lhs, __lhs_len) == 0; 3883} 3884 3885template<class _CharT, class _Traits, class _Allocator> 3886inline _LIBCPP_INLINE_VISIBILITY 3887bool 3888operator==(const basic_string<_CharT,_Traits,_Allocator>& __lhs, 3889 const _CharT* __rhs) _NOEXCEPT 3890{ 3891 typedef basic_string<_CharT, _Traits, _Allocator> _String; 3892 _LIBCPP_ASSERT(__rhs != nullptr, "operator==(basic_string, char*): received nullptr"); 3893 size_t __rhs_len = _Traits::length(__rhs); 3894 if (__rhs_len != __lhs.size()) return false; 3895 return __lhs.compare(0, _String::npos, __rhs, __rhs_len) == 0; 3896} 3897 3898template<class _CharT, class _Traits, class _Allocator> 3899inline _LIBCPP_INLINE_VISIBILITY 3900bool 3901operator!=(const basic_string<_CharT,_Traits,_Allocator>& __lhs, 3902 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 3903{ 3904 return !(__lhs == __rhs); 3905} 3906 3907template<class _CharT, class _Traits, class _Allocator> 3908inline _LIBCPP_INLINE_VISIBILITY 3909bool 3910operator!=(const _CharT* __lhs, 3911 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 3912{ 3913 return !(__lhs == __rhs); 3914} 3915 3916template<class _CharT, class _Traits, class _Allocator> 3917inline _LIBCPP_INLINE_VISIBILITY 3918bool 3919operator!=(const basic_string<_CharT, _Traits, _Allocator>& __lhs, 3920 const _CharT* __rhs) _NOEXCEPT 3921{ 3922 return !(__lhs == __rhs); 3923} 3924 3925// operator< 3926 3927template<class _CharT, class _Traits, class _Allocator> 3928inline _LIBCPP_INLINE_VISIBILITY 3929bool 3930operator< (const basic_string<_CharT, _Traits, _Allocator>& __lhs, 3931 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 3932{ 3933 return __lhs.compare(__rhs) < 0; 3934} 3935 3936template<class _CharT, class _Traits, class _Allocator> 3937inline _LIBCPP_INLINE_VISIBILITY 3938bool 3939operator< (const basic_string<_CharT, _Traits, _Allocator>& __lhs, 3940 const _CharT* __rhs) _NOEXCEPT 3941{ 3942 return __lhs.compare(__rhs) < 0; 3943} 3944 3945template<class _CharT, class _Traits, class _Allocator> 3946inline _LIBCPP_INLINE_VISIBILITY 3947bool 3948operator< (const _CharT* __lhs, 3949 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 3950{ 3951 return __rhs.compare(__lhs) > 0; 3952} 3953 3954// operator> 3955 3956template<class _CharT, class _Traits, class _Allocator> 3957inline _LIBCPP_INLINE_VISIBILITY 3958bool 3959operator> (const basic_string<_CharT, _Traits, _Allocator>& __lhs, 3960 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 3961{ 3962 return __rhs < __lhs; 3963} 3964 3965template<class _CharT, class _Traits, class _Allocator> 3966inline _LIBCPP_INLINE_VISIBILITY 3967bool 3968operator> (const basic_string<_CharT, _Traits, _Allocator>& __lhs, 3969 const _CharT* __rhs) _NOEXCEPT 3970{ 3971 return __rhs < __lhs; 3972} 3973 3974template<class _CharT, class _Traits, class _Allocator> 3975inline _LIBCPP_INLINE_VISIBILITY 3976bool 3977operator> (const _CharT* __lhs, 3978 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 3979{ 3980 return __rhs < __lhs; 3981} 3982 3983// operator<= 3984 3985template<class _CharT, class _Traits, class _Allocator> 3986inline _LIBCPP_INLINE_VISIBILITY 3987bool 3988operator<=(const basic_string<_CharT, _Traits, _Allocator>& __lhs, 3989 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 3990{ 3991 return !(__rhs < __lhs); 3992} 3993 3994template<class _CharT, class _Traits, class _Allocator> 3995inline _LIBCPP_INLINE_VISIBILITY 3996bool 3997operator<=(const basic_string<_CharT, _Traits, _Allocator>& __lhs, 3998 const _CharT* __rhs) _NOEXCEPT 3999{ 4000 return !(__rhs < __lhs); 4001} 4002 4003template<class _CharT, class _Traits, class _Allocator> 4004inline _LIBCPP_INLINE_VISIBILITY 4005bool 4006operator<=(const _CharT* __lhs, 4007 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4008{ 4009 return !(__rhs < __lhs); 4010} 4011 4012// operator>= 4013 4014template<class _CharT, class _Traits, class _Allocator> 4015inline _LIBCPP_INLINE_VISIBILITY 4016bool 4017operator>=(const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4018 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4019{ 4020 return !(__lhs < __rhs); 4021} 4022 4023template<class _CharT, class _Traits, class _Allocator> 4024inline _LIBCPP_INLINE_VISIBILITY 4025bool 4026operator>=(const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4027 const _CharT* __rhs) _NOEXCEPT 4028{ 4029 return !(__lhs < __rhs); 4030} 4031 4032template<class _CharT, class _Traits, class _Allocator> 4033inline _LIBCPP_INLINE_VISIBILITY 4034bool 4035operator>=(const _CharT* __lhs, 4036 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4037{ 4038 return !(__lhs < __rhs); 4039} 4040 4041// operator + 4042 4043template<class _CharT, class _Traits, class _Allocator> 4044basic_string<_CharT, _Traits, _Allocator> 4045operator+(const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4046 const basic_string<_CharT, _Traits, _Allocator>& __rhs) 4047{ 4048 basic_string<_CharT, _Traits, _Allocator> __r(__lhs.get_allocator()); 4049 typename basic_string<_CharT, _Traits, _Allocator>::size_type __lhs_sz = __lhs.size(); 4050 typename basic_string<_CharT, _Traits, _Allocator>::size_type __rhs_sz = __rhs.size(); 4051 __r.__init(__lhs.data(), __lhs_sz, __lhs_sz + __rhs_sz); 4052 __r.append(__rhs.data(), __rhs_sz); 4053 return __r; 4054} 4055 4056template<class _CharT, class _Traits, class _Allocator> 4057basic_string<_CharT, _Traits, _Allocator> 4058operator+(const _CharT* __lhs , const basic_string<_CharT,_Traits,_Allocator>& __rhs) 4059{ 4060 basic_string<_CharT, _Traits, _Allocator> __r(__rhs.get_allocator()); 4061 typename basic_string<_CharT, _Traits, _Allocator>::size_type __lhs_sz = _Traits::length(__lhs); 4062 typename basic_string<_CharT, _Traits, _Allocator>::size_type __rhs_sz = __rhs.size(); 4063 __r.__init(__lhs, __lhs_sz, __lhs_sz + __rhs_sz); 4064 __r.append(__rhs.data(), __rhs_sz); 4065 return __r; 4066} 4067 4068template<class _CharT, class _Traits, class _Allocator> 4069basic_string<_CharT, _Traits, _Allocator> 4070operator+(_CharT __lhs, const basic_string<_CharT,_Traits,_Allocator>& __rhs) 4071{ 4072 basic_string<_CharT, _Traits, _Allocator> __r(__rhs.get_allocator()); 4073 typename basic_string<_CharT, _Traits, _Allocator>::size_type __rhs_sz = __rhs.size(); 4074 __r.__init(&__lhs, 1, 1 + __rhs_sz); 4075 __r.append(__rhs.data(), __rhs_sz); 4076 return __r; 4077} 4078 4079template<class _CharT, class _Traits, class _Allocator> 4080inline 4081basic_string<_CharT, _Traits, _Allocator> 4082operator+(const basic_string<_CharT, _Traits, _Allocator>& __lhs, const _CharT* __rhs) 4083{ 4084 basic_string<_CharT, _Traits, _Allocator> __r(__lhs.get_allocator()); 4085 typename basic_string<_CharT, _Traits, _Allocator>::size_type __lhs_sz = __lhs.size(); 4086 typename basic_string<_CharT, _Traits, _Allocator>::size_type __rhs_sz = _Traits::length(__rhs); 4087 __r.__init(__lhs.data(), __lhs_sz, __lhs_sz + __rhs_sz); 4088 __r.append(__rhs, __rhs_sz); 4089 return __r; 4090} 4091 4092template<class _CharT, class _Traits, class _Allocator> 4093basic_string<_CharT, _Traits, _Allocator> 4094operator+(const basic_string<_CharT, _Traits, _Allocator>& __lhs, _CharT __rhs) 4095{ 4096 basic_string<_CharT, _Traits, _Allocator> __r(__lhs.get_allocator()); 4097 typename basic_string<_CharT, _Traits, _Allocator>::size_type __lhs_sz = __lhs.size(); 4098 __r.__init(__lhs.data(), __lhs_sz, __lhs_sz + 1); 4099 __r.push_back(__rhs); 4100 return __r; 4101} 4102 4103#ifndef _LIBCPP_CXX03_LANG 4104 4105template<class _CharT, class _Traits, class _Allocator> 4106inline _LIBCPP_INLINE_VISIBILITY 4107basic_string<_CharT, _Traits, _Allocator> 4108operator+(basic_string<_CharT, _Traits, _Allocator>&& __lhs, const basic_string<_CharT, _Traits, _Allocator>& __rhs) 4109{ 4110 return _VSTD::move(__lhs.append(__rhs)); 4111} 4112 4113template<class _CharT, class _Traits, class _Allocator> 4114inline _LIBCPP_INLINE_VISIBILITY 4115basic_string<_CharT, _Traits, _Allocator> 4116operator+(const basic_string<_CharT, _Traits, _Allocator>& __lhs, basic_string<_CharT, _Traits, _Allocator>&& __rhs) 4117{ 4118 return _VSTD::move(__rhs.insert(0, __lhs)); 4119} 4120 4121template<class _CharT, class _Traits, class _Allocator> 4122inline _LIBCPP_INLINE_VISIBILITY 4123basic_string<_CharT, _Traits, _Allocator> 4124operator+(basic_string<_CharT, _Traits, _Allocator>&& __lhs, basic_string<_CharT, _Traits, _Allocator>&& __rhs) 4125{ 4126 return _VSTD::move(__lhs.append(__rhs)); 4127} 4128 4129template<class _CharT, class _Traits, class _Allocator> 4130inline _LIBCPP_INLINE_VISIBILITY 4131basic_string<_CharT, _Traits, _Allocator> 4132operator+(const _CharT* __lhs , basic_string<_CharT,_Traits,_Allocator>&& __rhs) 4133{ 4134 return _VSTD::move(__rhs.insert(0, __lhs)); 4135} 4136 4137template<class _CharT, class _Traits, class _Allocator> 4138inline _LIBCPP_INLINE_VISIBILITY 4139basic_string<_CharT, _Traits, _Allocator> 4140operator+(_CharT __lhs, basic_string<_CharT,_Traits,_Allocator>&& __rhs) 4141{ 4142 __rhs.insert(__rhs.begin(), __lhs); 4143 return _VSTD::move(__rhs); 4144} 4145 4146template<class _CharT, class _Traits, class _Allocator> 4147inline _LIBCPP_INLINE_VISIBILITY 4148basic_string<_CharT, _Traits, _Allocator> 4149operator+(basic_string<_CharT, _Traits, _Allocator>&& __lhs, const _CharT* __rhs) 4150{ 4151 return _VSTD::move(__lhs.append(__rhs)); 4152} 4153 4154template<class _CharT, class _Traits, class _Allocator> 4155inline _LIBCPP_INLINE_VISIBILITY 4156basic_string<_CharT, _Traits, _Allocator> 4157operator+(basic_string<_CharT, _Traits, _Allocator>&& __lhs, _CharT __rhs) 4158{ 4159 __lhs.push_back(__rhs); 4160 return _VSTD::move(__lhs); 4161} 4162 4163#endif // _LIBCPP_CXX03_LANG 4164 4165// swap 4166 4167template<class _CharT, class _Traits, class _Allocator> 4168inline _LIBCPP_INLINE_VISIBILITY 4169void 4170swap(basic_string<_CharT, _Traits, _Allocator>& __lhs, 4171 basic_string<_CharT, _Traits, _Allocator>& __rhs) 4172 _NOEXCEPT_(_NOEXCEPT_(__lhs.swap(__rhs))) 4173{ 4174 __lhs.swap(__rhs); 4175} 4176 4177#ifndef _LIBCPP_NO_HAS_CHAR8_T 4178typedef basic_string<char8_t> u8string; 4179#endif 4180 4181#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS 4182typedef basic_string<char16_t> u16string; 4183typedef basic_string<char32_t> u32string; 4184#endif // _LIBCPP_HAS_NO_UNICODE_CHARS 4185 4186_LIBCPP_FUNC_VIS int stoi (const string& __str, size_t* __idx = 0, int __base = 10); 4187_LIBCPP_FUNC_VIS long stol (const string& __str, size_t* __idx = 0, int __base = 10); 4188_LIBCPP_FUNC_VIS unsigned long stoul (const string& __str, size_t* __idx = 0, int __base = 10); 4189_LIBCPP_FUNC_VIS long long stoll (const string& __str, size_t* __idx = 0, int __base = 10); 4190_LIBCPP_FUNC_VIS unsigned long long stoull(const string& __str, size_t* __idx = 0, int __base = 10); 4191 4192_LIBCPP_FUNC_VIS float stof (const string& __str, size_t* __idx = 0); 4193_LIBCPP_FUNC_VIS double stod (const string& __str, size_t* __idx = 0); 4194_LIBCPP_FUNC_VIS long double stold(const string& __str, size_t* __idx = 0); 4195 4196_LIBCPP_FUNC_VIS string to_string(int __val); 4197_LIBCPP_FUNC_VIS string to_string(unsigned __val); 4198_LIBCPP_FUNC_VIS string to_string(long __val); 4199_LIBCPP_FUNC_VIS string to_string(unsigned long __val); 4200_LIBCPP_FUNC_VIS string to_string(long long __val); 4201_LIBCPP_FUNC_VIS string to_string(unsigned long long __val); 4202_LIBCPP_FUNC_VIS string to_string(float __val); 4203_LIBCPP_FUNC_VIS string to_string(double __val); 4204_LIBCPP_FUNC_VIS string to_string(long double __val); 4205 4206_LIBCPP_FUNC_VIS int stoi (const wstring& __str, size_t* __idx = 0, int __base = 10); 4207_LIBCPP_FUNC_VIS long stol (const wstring& __str, size_t* __idx = 0, int __base = 10); 4208_LIBCPP_FUNC_VIS unsigned long stoul (const wstring& __str, size_t* __idx = 0, int __base = 10); 4209_LIBCPP_FUNC_VIS long long stoll (const wstring& __str, size_t* __idx = 0, int __base = 10); 4210_LIBCPP_FUNC_VIS unsigned long long stoull(const wstring& __str, size_t* __idx = 0, int __base = 10); 4211 4212_LIBCPP_FUNC_VIS float stof (const wstring& __str, size_t* __idx = 0); 4213_LIBCPP_FUNC_VIS double stod (const wstring& __str, size_t* __idx = 0); 4214_LIBCPP_FUNC_VIS long double stold(const wstring& __str, size_t* __idx = 0); 4215 4216_LIBCPP_FUNC_VIS wstring to_wstring(int __val); 4217_LIBCPP_FUNC_VIS wstring to_wstring(unsigned __val); 4218_LIBCPP_FUNC_VIS wstring to_wstring(long __val); 4219_LIBCPP_FUNC_VIS wstring to_wstring(unsigned long __val); 4220_LIBCPP_FUNC_VIS wstring to_wstring(long long __val); 4221_LIBCPP_FUNC_VIS wstring to_wstring(unsigned long long __val); 4222_LIBCPP_FUNC_VIS wstring to_wstring(float __val); 4223_LIBCPP_FUNC_VIS wstring to_wstring(double __val); 4224_LIBCPP_FUNC_VIS wstring to_wstring(long double __val); 4225 4226template<class _CharT, class _Traits, class _Allocator> 4227 const typename basic_string<_CharT, _Traits, _Allocator>::size_type 4228 basic_string<_CharT, _Traits, _Allocator>::npos; 4229 4230template <class _CharT, class _Allocator> 4231struct _LIBCPP_TEMPLATE_VIS 4232 hash<basic_string<_CharT, char_traits<_CharT>, _Allocator> > 4233 : public unary_function< 4234 basic_string<_CharT, char_traits<_CharT>, _Allocator>, size_t> 4235{ 4236 size_t 4237 operator()(const basic_string<_CharT, char_traits<_CharT>, _Allocator>& __val) const _NOEXCEPT 4238 { return __do_string_hash(__val.data(), __val.data() + __val.size()); } 4239}; 4240 4241 4242template<class _CharT, class _Traits, class _Allocator> 4243basic_ostream<_CharT, _Traits>& 4244operator<<(basic_ostream<_CharT, _Traits>& __os, 4245 const basic_string<_CharT, _Traits, _Allocator>& __str); 4246 4247template<class _CharT, class _Traits, class _Allocator> 4248basic_istream<_CharT, _Traits>& 4249operator>>(basic_istream<_CharT, _Traits>& __is, 4250 basic_string<_CharT, _Traits, _Allocator>& __str); 4251 4252template<class _CharT, class _Traits, class _Allocator> 4253basic_istream<_CharT, _Traits>& 4254getline(basic_istream<_CharT, _Traits>& __is, 4255 basic_string<_CharT, _Traits, _Allocator>& __str, _CharT __dlm); 4256 4257template<class _CharT, class _Traits, class _Allocator> 4258inline _LIBCPP_INLINE_VISIBILITY 4259basic_istream<_CharT, _Traits>& 4260getline(basic_istream<_CharT, _Traits>& __is, 4261 basic_string<_CharT, _Traits, _Allocator>& __str); 4262 4263#ifndef _LIBCPP_CXX03_LANG 4264 4265template<class _CharT, class _Traits, class _Allocator> 4266inline _LIBCPP_INLINE_VISIBILITY 4267basic_istream<_CharT, _Traits>& 4268getline(basic_istream<_CharT, _Traits>&& __is, 4269 basic_string<_CharT, _Traits, _Allocator>& __str, _CharT __dlm); 4270 4271template<class _CharT, class _Traits, class _Allocator> 4272inline _LIBCPP_INLINE_VISIBILITY 4273basic_istream<_CharT, _Traits>& 4274getline(basic_istream<_CharT, _Traits>&& __is, 4275 basic_string<_CharT, _Traits, _Allocator>& __str); 4276 4277#endif // _LIBCPP_CXX03_LANG 4278 4279#if _LIBCPP_STD_VER > 17 4280template<class _CharT, class _Traits, class _Allocator, class _Up> 4281inline _LIBCPP_INLINE_VISIBILITY 4282void erase(basic_string<_CharT, _Traits, _Allocator>& __str, const _Up& __v) 4283{ __str.erase(_VSTD::remove(__str.begin(), __str.end(), __v), __str.end()); } 4284 4285template<class _CharT, class _Traits, class _Allocator, class _Predicate> 4286inline _LIBCPP_INLINE_VISIBILITY 4287void erase_if(basic_string<_CharT, _Traits, _Allocator>& __str, _Predicate __pred) 4288{ __str.erase(_VSTD::remove_if(__str.begin(), __str.end(), __pred), __str.end()); } 4289#endif 4290 4291#if _LIBCPP_DEBUG_LEVEL >= 2 4292 4293template<class _CharT, class _Traits, class _Allocator> 4294bool 4295basic_string<_CharT, _Traits, _Allocator>::__dereferenceable(const const_iterator* __i) const 4296{ 4297 return this->data() <= _VSTD::__to_address(__i->base()) && 4298 _VSTD::__to_address(__i->base()) < this->data() + this->size(); 4299} 4300 4301template<class _CharT, class _Traits, class _Allocator> 4302bool 4303basic_string<_CharT, _Traits, _Allocator>::__decrementable(const const_iterator* __i) const 4304{ 4305 return this->data() < _VSTD::__to_address(__i->base()) && 4306 _VSTD::__to_address(__i->base()) <= this->data() + this->size(); 4307} 4308 4309template<class _CharT, class _Traits, class _Allocator> 4310bool 4311basic_string<_CharT, _Traits, _Allocator>::__addable(const const_iterator* __i, ptrdiff_t __n) const 4312{ 4313 const value_type* __p = _VSTD::__to_address(__i->base()) + __n; 4314 return this->data() <= __p && __p <= this->data() + this->size(); 4315} 4316 4317template<class _CharT, class _Traits, class _Allocator> 4318bool 4319basic_string<_CharT, _Traits, _Allocator>::__subscriptable(const const_iterator* __i, ptrdiff_t __n) const 4320{ 4321 const value_type* __p = _VSTD::__to_address(__i->base()) + __n; 4322 return this->data() <= __p && __p < this->data() + this->size(); 4323} 4324 4325#endif // _LIBCPP_DEBUG_LEVEL >= 2 4326 4327_LIBCPP_EXTERN_TEMPLATE(class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_string<char>) 4328_LIBCPP_EXTERN_TEMPLATE(class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_string<wchar_t>) 4329 4330#if _LIBCPP_STD_VER > 11 4331// Literal suffixes for basic_string [basic.string.literals] 4332inline namespace literals 4333{ 4334 inline namespace string_literals 4335 { 4336 inline _LIBCPP_INLINE_VISIBILITY 4337 basic_string<char> operator "" s( const char *__str, size_t __len ) 4338 { 4339 return basic_string<char> (__str, __len); 4340 } 4341 4342 inline _LIBCPP_INLINE_VISIBILITY 4343 basic_string<wchar_t> operator "" s( const wchar_t *__str, size_t __len ) 4344 { 4345 return basic_string<wchar_t> (__str, __len); 4346 } 4347 4348#ifndef _LIBCPP_NO_HAS_CHAR8_T 4349 inline _LIBCPP_INLINE_VISIBILITY 4350 basic_string<char8_t> operator "" s(const char8_t *__str, size_t __len) _NOEXCEPT 4351 { 4352 return basic_string<char8_t> (__str, __len); 4353 } 4354#endif 4355 4356 inline _LIBCPP_INLINE_VISIBILITY 4357 basic_string<char16_t> operator "" s( const char16_t *__str, size_t __len ) 4358 { 4359 return basic_string<char16_t> (__str, __len); 4360 } 4361 4362 inline _LIBCPP_INLINE_VISIBILITY 4363 basic_string<char32_t> operator "" s( const char32_t *__str, size_t __len ) 4364 { 4365 return basic_string<char32_t> (__str, __len); 4366 } 4367 } 4368} 4369#endif 4370 4371_LIBCPP_END_NAMESPACE_STD 4372 4373_LIBCPP_POP_MACROS 4374 4375#endif // _LIBCPP_STRING 4376