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) : __r_(__default_init_tag(), __default_init_tag()) { 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_LIBCPP_STRING_EXTERN_TEMPLATE_LIST(_LIBCPP_EXTERN_TEMPLATE, char) 1680_LIBCPP_STRING_EXTERN_TEMPLATE_LIST(_LIBCPP_EXTERN_TEMPLATE, wchar_t) 1681 1682template <class _CharT, class _Traits, class _Allocator> 1683inline 1684void 1685basic_string<_CharT, _Traits, _Allocator>::__invalidate_all_iterators() 1686{ 1687#if _LIBCPP_DEBUG_LEVEL >= 2 1688 __get_db()->__invalidate_all(this); 1689#endif // _LIBCPP_DEBUG_LEVEL >= 2 1690} 1691 1692template <class _CharT, class _Traits, class _Allocator> 1693inline 1694void 1695basic_string<_CharT, _Traits, _Allocator>::__invalidate_iterators_past(size_type 1696#if _LIBCPP_DEBUG_LEVEL >= 2 1697 __pos 1698#endif 1699 ) 1700{ 1701#if _LIBCPP_DEBUG_LEVEL >= 2 1702 __c_node* __c = __get_db()->__find_c_and_lock(this); 1703 if (__c) 1704 { 1705 const_pointer __new_last = __get_pointer() + __pos; 1706 for (__i_node** __p = __c->end_; __p != __c->beg_; ) 1707 { 1708 --__p; 1709 const_iterator* __i = static_cast<const_iterator*>((*__p)->__i_); 1710 if (__i->base() > __new_last) 1711 { 1712 (*__p)->__c_ = nullptr; 1713 if (--__c->end_ != __p) 1714 memmove(__p, __p+1, (__c->end_ - __p)*sizeof(__i_node*)); 1715 } 1716 } 1717 __get_db()->unlock(); 1718 } 1719#endif // _LIBCPP_DEBUG_LEVEL >= 2 1720} 1721 1722template <class _CharT, class _Traits, class _Allocator> 1723inline 1724basic_string<_CharT, _Traits, _Allocator>::basic_string() 1725 _NOEXCEPT_(is_nothrow_default_constructible<allocator_type>::value) 1726 : __r_(__default_init_tag(), __default_init_tag()) 1727{ 1728#if _LIBCPP_DEBUG_LEVEL >= 2 1729 __get_db()->__insert_c(this); 1730#endif 1731 __zero(); 1732} 1733 1734template <class _CharT, class _Traits, class _Allocator> 1735inline 1736basic_string<_CharT, _Traits, _Allocator>::basic_string(const allocator_type& __a) 1737#if _LIBCPP_STD_VER <= 14 1738 _NOEXCEPT_(is_nothrow_copy_constructible<allocator_type>::value) 1739#else 1740 _NOEXCEPT 1741#endif 1742: __r_(__default_init_tag(), __a) 1743{ 1744#if _LIBCPP_DEBUG_LEVEL >= 2 1745 __get_db()->__insert_c(this); 1746#endif 1747 __zero(); 1748} 1749 1750template <class _CharT, class _Traits, class _Allocator> 1751void basic_string<_CharT, _Traits, _Allocator>::__init(const value_type* __s, 1752 size_type __sz, 1753 size_type __reserve) 1754{ 1755 if (__reserve > max_size()) 1756 this->__throw_length_error(); 1757 pointer __p; 1758 if (__reserve < __min_cap) 1759 { 1760 __set_short_size(__sz); 1761 __p = __get_short_pointer(); 1762 } 1763 else 1764 { 1765 size_type __cap = __recommend(__reserve); 1766 __p = __alloc_traits::allocate(__alloc(), __cap+1); 1767 __set_long_pointer(__p); 1768 __set_long_cap(__cap+1); 1769 __set_long_size(__sz); 1770 } 1771 traits_type::copy(_VSTD::__to_address(__p), __s, __sz); 1772 traits_type::assign(__p[__sz], value_type()); 1773} 1774 1775template <class _CharT, class _Traits, class _Allocator> 1776void 1777basic_string<_CharT, _Traits, _Allocator>::__init(const value_type* __s, size_type __sz) 1778{ 1779 if (__sz > max_size()) 1780 this->__throw_length_error(); 1781 pointer __p; 1782 if (__sz < __min_cap) 1783 { 1784 __set_short_size(__sz); 1785 __p = __get_short_pointer(); 1786 } 1787 else 1788 { 1789 size_type __cap = __recommend(__sz); 1790 __p = __alloc_traits::allocate(__alloc(), __cap+1); 1791 __set_long_pointer(__p); 1792 __set_long_cap(__cap+1); 1793 __set_long_size(__sz); 1794 } 1795 traits_type::copy(_VSTD::__to_address(__p), __s, __sz); 1796 traits_type::assign(__p[__sz], value_type()); 1797} 1798 1799template <class _CharT, class _Traits, class _Allocator> 1800template <class> 1801basic_string<_CharT, _Traits, _Allocator>::basic_string(const _CharT* __s, const _Allocator& __a) 1802 : __r_(__default_init_tag(), __a) 1803{ 1804 _LIBCPP_ASSERT(__s != nullptr, "basic_string(const char*, allocator) detected nullptr"); 1805 __init(__s, traits_type::length(__s)); 1806#if _LIBCPP_DEBUG_LEVEL >= 2 1807 __get_db()->__insert_c(this); 1808#endif 1809} 1810 1811template <class _CharT, class _Traits, class _Allocator> 1812inline 1813basic_string<_CharT, _Traits, _Allocator>::basic_string(const _CharT* __s, size_type __n) 1814 : __r_(__default_init_tag(), __default_init_tag()) 1815{ 1816 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "basic_string(const char*, n) detected nullptr"); 1817 __init(__s, __n); 1818#if _LIBCPP_DEBUG_LEVEL >= 2 1819 __get_db()->__insert_c(this); 1820#endif 1821} 1822 1823template <class _CharT, class _Traits, class _Allocator> 1824inline 1825basic_string<_CharT, _Traits, _Allocator>::basic_string(const _CharT* __s, size_type __n, const _Allocator& __a) 1826 : __r_(__default_init_tag(), __a) 1827{ 1828 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "basic_string(const char*, n, allocator) detected nullptr"); 1829 __init(__s, __n); 1830#if _LIBCPP_DEBUG_LEVEL >= 2 1831 __get_db()->__insert_c(this); 1832#endif 1833} 1834 1835template <class _CharT, class _Traits, class _Allocator> 1836basic_string<_CharT, _Traits, _Allocator>::basic_string(const basic_string& __str) 1837 : __r_(__default_init_tag(), __alloc_traits::select_on_container_copy_construction(__str.__alloc())) 1838{ 1839 if (!__str.__is_long()) 1840 __r_.first().__r = __str.__r_.first().__r; 1841 else 1842 __init(_VSTD::__to_address(__str.__get_long_pointer()), __str.__get_long_size()); 1843#if _LIBCPP_DEBUG_LEVEL >= 2 1844 __get_db()->__insert_c(this); 1845#endif 1846} 1847 1848template <class _CharT, class _Traits, class _Allocator> 1849basic_string<_CharT, _Traits, _Allocator>::basic_string( 1850 const basic_string& __str, const allocator_type& __a) 1851 : __r_(__default_init_tag(), __a) 1852{ 1853 if (!__str.__is_long()) 1854 __r_.first().__r = __str.__r_.first().__r; 1855 else 1856 __init(_VSTD::__to_address(__str.__get_long_pointer()), __str.__get_long_size()); 1857#if _LIBCPP_DEBUG_LEVEL >= 2 1858 __get_db()->__insert_c(this); 1859#endif 1860} 1861 1862#ifndef _LIBCPP_CXX03_LANG 1863 1864template <class _CharT, class _Traits, class _Allocator> 1865inline 1866basic_string<_CharT, _Traits, _Allocator>::basic_string(basic_string&& __str) 1867#if _LIBCPP_STD_VER <= 14 1868 _NOEXCEPT_(is_nothrow_move_constructible<allocator_type>::value) 1869#else 1870 _NOEXCEPT 1871#endif 1872 : __r_(_VSTD::move(__str.__r_)) 1873{ 1874 __str.__zero(); 1875#if _LIBCPP_DEBUG_LEVEL >= 2 1876 __get_db()->__insert_c(this); 1877 if (__is_long()) 1878 __get_db()->swap(this, &__str); 1879#endif 1880} 1881 1882template <class _CharT, class _Traits, class _Allocator> 1883inline 1884basic_string<_CharT, _Traits, _Allocator>::basic_string(basic_string&& __str, const allocator_type& __a) 1885 : __r_(__default_init_tag(), __a) 1886{ 1887 if (__str.__is_long() && __a != __str.__alloc()) // copy, not move 1888 __init(_VSTD::__to_address(__str.__get_long_pointer()), __str.__get_long_size()); 1889 else 1890 { 1891 __r_.first().__r = __str.__r_.first().__r; 1892 __str.__zero(); 1893 } 1894#if _LIBCPP_DEBUG_LEVEL >= 2 1895 __get_db()->__insert_c(this); 1896 if (__is_long()) 1897 __get_db()->swap(this, &__str); 1898#endif 1899} 1900 1901#endif // _LIBCPP_CXX03_LANG 1902 1903template <class _CharT, class _Traits, class _Allocator> 1904void 1905basic_string<_CharT, _Traits, _Allocator>::__init(size_type __n, value_type __c) 1906{ 1907 if (__n > max_size()) 1908 this->__throw_length_error(); 1909 pointer __p; 1910 if (__n < __min_cap) 1911 { 1912 __set_short_size(__n); 1913 __p = __get_short_pointer(); 1914 } 1915 else 1916 { 1917 size_type __cap = __recommend(__n); 1918 __p = __alloc_traits::allocate(__alloc(), __cap+1); 1919 __set_long_pointer(__p); 1920 __set_long_cap(__cap+1); 1921 __set_long_size(__n); 1922 } 1923 traits_type::assign(_VSTD::__to_address(__p), __n, __c); 1924 traits_type::assign(__p[__n], value_type()); 1925} 1926 1927template <class _CharT, class _Traits, class _Allocator> 1928inline 1929basic_string<_CharT, _Traits, _Allocator>::basic_string(size_type __n, _CharT __c) 1930 : __r_(__default_init_tag(), __default_init_tag()) 1931{ 1932 __init(__n, __c); 1933#if _LIBCPP_DEBUG_LEVEL >= 2 1934 __get_db()->__insert_c(this); 1935#endif 1936} 1937 1938template <class _CharT, class _Traits, class _Allocator> 1939template <class> 1940basic_string<_CharT, _Traits, _Allocator>::basic_string(size_type __n, _CharT __c, const _Allocator& __a) 1941 : __r_(__default_init_tag(), __a) 1942{ 1943 __init(__n, __c); 1944#if _LIBCPP_DEBUG_LEVEL >= 2 1945 __get_db()->__insert_c(this); 1946#endif 1947} 1948 1949template <class _CharT, class _Traits, class _Allocator> 1950basic_string<_CharT, _Traits, _Allocator>::basic_string(const basic_string& __str, 1951 size_type __pos, size_type __n, 1952 const _Allocator& __a) 1953 : __r_(__default_init_tag(), __a) 1954{ 1955 size_type __str_sz = __str.size(); 1956 if (__pos > __str_sz) 1957 this->__throw_out_of_range(); 1958 __init(__str.data() + __pos, _VSTD::min(__n, __str_sz - __pos)); 1959#if _LIBCPP_DEBUG_LEVEL >= 2 1960 __get_db()->__insert_c(this); 1961#endif 1962} 1963 1964template <class _CharT, class _Traits, class _Allocator> 1965inline 1966basic_string<_CharT, _Traits, _Allocator>::basic_string(const basic_string& __str, size_type __pos, 1967 const _Allocator& __a) 1968 : __r_(__default_init_tag(), __a) 1969{ 1970 size_type __str_sz = __str.size(); 1971 if (__pos > __str_sz) 1972 this->__throw_out_of_range(); 1973 __init(__str.data() + __pos, __str_sz - __pos); 1974#if _LIBCPP_DEBUG_LEVEL >= 2 1975 __get_db()->__insert_c(this); 1976#endif 1977} 1978 1979template <class _CharT, class _Traits, class _Allocator> 1980template <class _Tp, class> 1981basic_string<_CharT, _Traits, _Allocator>::basic_string( 1982 const _Tp& __t, size_type __pos, size_type __n, const allocator_type& __a) 1983 : __r_(__default_init_tag(), __a) 1984{ 1985 __self_view __sv0 = __t; 1986 __self_view __sv = __sv0.substr(__pos, __n); 1987 __init(__sv.data(), __sv.size()); 1988#if _LIBCPP_DEBUG_LEVEL >= 2 1989 __get_db()->__insert_c(this); 1990#endif 1991} 1992 1993template <class _CharT, class _Traits, class _Allocator> 1994template <class _Tp, class> 1995basic_string<_CharT, _Traits, _Allocator>::basic_string(const _Tp & __t) 1996 : __r_(__default_init_tag(), __default_init_tag()) 1997{ 1998 __self_view __sv = __t; 1999 __init(__sv.data(), __sv.size()); 2000#if _LIBCPP_DEBUG_LEVEL >= 2 2001 __get_db()->__insert_c(this); 2002#endif 2003} 2004 2005template <class _CharT, class _Traits, class _Allocator> 2006template <class _Tp, class> 2007basic_string<_CharT, _Traits, _Allocator>::basic_string(const _Tp & __t, const _Allocator& __a) 2008 : __r_(__default_init_tag(), __a) 2009{ 2010 __self_view __sv = __t; 2011 __init(__sv.data(), __sv.size()); 2012#if _LIBCPP_DEBUG_LEVEL >= 2 2013 __get_db()->__insert_c(this); 2014#endif 2015} 2016 2017template <class _CharT, class _Traits, class _Allocator> 2018template <class _InputIterator> 2019typename enable_if 2020< 2021 __is_exactly_cpp17_input_iterator<_InputIterator>::value, 2022 void 2023>::type 2024basic_string<_CharT, _Traits, _Allocator>::__init(_InputIterator __first, _InputIterator __last) 2025{ 2026 __zero(); 2027#ifndef _LIBCPP_NO_EXCEPTIONS 2028 try 2029 { 2030#endif // _LIBCPP_NO_EXCEPTIONS 2031 for (; __first != __last; ++__first) 2032 push_back(*__first); 2033#ifndef _LIBCPP_NO_EXCEPTIONS 2034 } 2035 catch (...) 2036 { 2037 if (__is_long()) 2038 __alloc_traits::deallocate(__alloc(), __get_long_pointer(), __get_long_cap()); 2039 throw; 2040 } 2041#endif // _LIBCPP_NO_EXCEPTIONS 2042} 2043 2044template <class _CharT, class _Traits, class _Allocator> 2045template <class _ForwardIterator> 2046typename enable_if 2047< 2048 __is_cpp17_forward_iterator<_ForwardIterator>::value, 2049 void 2050>::type 2051basic_string<_CharT, _Traits, _Allocator>::__init(_ForwardIterator __first, _ForwardIterator __last) 2052{ 2053 size_type __sz = static_cast<size_type>(_VSTD::distance(__first, __last)); 2054 if (__sz > max_size()) 2055 this->__throw_length_error(); 2056 pointer __p; 2057 if (__sz < __min_cap) 2058 { 2059 __set_short_size(__sz); 2060 __p = __get_short_pointer(); 2061 } 2062 else 2063 { 2064 size_type __cap = __recommend(__sz); 2065 __p = __alloc_traits::allocate(__alloc(), __cap+1); 2066 __set_long_pointer(__p); 2067 __set_long_cap(__cap+1); 2068 __set_long_size(__sz); 2069 } 2070 for (; __first != __last; ++__first, (void) ++__p) 2071 traits_type::assign(*__p, *__first); 2072 traits_type::assign(*__p, value_type()); 2073} 2074 2075template <class _CharT, class _Traits, class _Allocator> 2076template<class _InputIterator, class> 2077inline 2078basic_string<_CharT, _Traits, _Allocator>::basic_string(_InputIterator __first, _InputIterator __last) 2079 : __r_(__default_init_tag(), __default_init_tag()) 2080{ 2081 __init(__first, __last); 2082#if _LIBCPP_DEBUG_LEVEL >= 2 2083 __get_db()->__insert_c(this); 2084#endif 2085} 2086 2087template <class _CharT, class _Traits, class _Allocator> 2088template<class _InputIterator, class> 2089inline 2090basic_string<_CharT, _Traits, _Allocator>::basic_string(_InputIterator __first, _InputIterator __last, 2091 const allocator_type& __a) 2092 : __r_(__default_init_tag(), __a) 2093{ 2094 __init(__first, __last); 2095#if _LIBCPP_DEBUG_LEVEL >= 2 2096 __get_db()->__insert_c(this); 2097#endif 2098} 2099 2100#ifndef _LIBCPP_CXX03_LANG 2101 2102template <class _CharT, class _Traits, class _Allocator> 2103inline 2104basic_string<_CharT, _Traits, _Allocator>::basic_string( 2105 initializer_list<_CharT> __il) 2106 : __r_(__default_init_tag(), __default_init_tag()) 2107{ 2108 __init(__il.begin(), __il.end()); 2109#if _LIBCPP_DEBUG_LEVEL >= 2 2110 __get_db()->__insert_c(this); 2111#endif 2112} 2113 2114template <class _CharT, class _Traits, class _Allocator> 2115inline 2116 2117basic_string<_CharT, _Traits, _Allocator>::basic_string( 2118 initializer_list<_CharT> __il, const _Allocator& __a) 2119 : __r_(__default_init_tag(), __a) 2120{ 2121 __init(__il.begin(), __il.end()); 2122#if _LIBCPP_DEBUG_LEVEL >= 2 2123 __get_db()->__insert_c(this); 2124#endif 2125} 2126 2127#endif // _LIBCPP_CXX03_LANG 2128 2129template <class _CharT, class _Traits, class _Allocator> 2130basic_string<_CharT, _Traits, _Allocator>::~basic_string() 2131{ 2132#if _LIBCPP_DEBUG_LEVEL >= 2 2133 __get_db()->__erase_c(this); 2134#endif 2135 if (__is_long()) 2136 __alloc_traits::deallocate(__alloc(), __get_long_pointer(), __get_long_cap()); 2137} 2138 2139template <class _CharT, class _Traits, class _Allocator> 2140void 2141basic_string<_CharT, _Traits, _Allocator>::__grow_by_and_replace 2142 (size_type __old_cap, size_type __delta_cap, size_type __old_sz, 2143 size_type __n_copy, size_type __n_del, size_type __n_add, const value_type* __p_new_stuff) 2144{ 2145 size_type __ms = max_size(); 2146 if (__delta_cap > __ms - __old_cap - 1) 2147 this->__throw_length_error(); 2148 pointer __old_p = __get_pointer(); 2149 size_type __cap = __old_cap < __ms / 2 - __alignment ? 2150 __recommend(_VSTD::max(__old_cap + __delta_cap, 2 * __old_cap)) : 2151 __ms - 1; 2152 pointer __p = __alloc_traits::allocate(__alloc(), __cap+1); 2153 __invalidate_all_iterators(); 2154 if (__n_copy != 0) 2155 traits_type::copy(_VSTD::__to_address(__p), 2156 _VSTD::__to_address(__old_p), __n_copy); 2157 if (__n_add != 0) 2158 traits_type::copy(_VSTD::__to_address(__p) + __n_copy, __p_new_stuff, __n_add); 2159 size_type __sec_cp_sz = __old_sz - __n_del - __n_copy; 2160 if (__sec_cp_sz != 0) 2161 traits_type::copy(_VSTD::__to_address(__p) + __n_copy + __n_add, 2162 _VSTD::__to_address(__old_p) + __n_copy + __n_del, __sec_cp_sz); 2163 if (__old_cap+1 != __min_cap) 2164 __alloc_traits::deallocate(__alloc(), __old_p, __old_cap+1); 2165 __set_long_pointer(__p); 2166 __set_long_cap(__cap+1); 2167 __old_sz = __n_copy + __n_add + __sec_cp_sz; 2168 __set_long_size(__old_sz); 2169 traits_type::assign(__p[__old_sz], value_type()); 2170} 2171 2172template <class _CharT, class _Traits, class _Allocator> 2173void 2174basic_string<_CharT, _Traits, _Allocator>::__grow_by(size_type __old_cap, size_type __delta_cap, size_type __old_sz, 2175 size_type __n_copy, size_type __n_del, size_type __n_add) 2176{ 2177 size_type __ms = max_size(); 2178 if (__delta_cap > __ms - __old_cap) 2179 this->__throw_length_error(); 2180 pointer __old_p = __get_pointer(); 2181 size_type __cap = __old_cap < __ms / 2 - __alignment ? 2182 __recommend(_VSTD::max(__old_cap + __delta_cap, 2 * __old_cap)) : 2183 __ms - 1; 2184 pointer __p = __alloc_traits::allocate(__alloc(), __cap+1); 2185 __invalidate_all_iterators(); 2186 if (__n_copy != 0) 2187 traits_type::copy(_VSTD::__to_address(__p), 2188 _VSTD::__to_address(__old_p), __n_copy); 2189 size_type __sec_cp_sz = __old_sz - __n_del - __n_copy; 2190 if (__sec_cp_sz != 0) 2191 traits_type::copy(_VSTD::__to_address(__p) + __n_copy + __n_add, 2192 _VSTD::__to_address(__old_p) + __n_copy + __n_del, 2193 __sec_cp_sz); 2194 if (__old_cap+1 != __min_cap) 2195 __alloc_traits::deallocate(__alloc(), __old_p, __old_cap+1); 2196 __set_long_pointer(__p); 2197 __set_long_cap(__cap+1); 2198} 2199 2200// assign 2201 2202template <class _CharT, class _Traits, class _Allocator> 2203basic_string<_CharT, _Traits, _Allocator>& 2204basic_string<_CharT, _Traits, _Allocator>::assign(const value_type* __s, size_type __n) 2205{ 2206 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::assign received nullptr"); 2207 size_type __cap = capacity(); 2208 if (__cap >= __n) 2209 { 2210 value_type* __p = _VSTD::__to_address(__get_pointer()); 2211 traits_type::move(__p, __s, __n); 2212 traits_type::assign(__p[__n], value_type()); 2213 __set_size(__n); 2214 __invalidate_iterators_past(__n); 2215 } 2216 else 2217 { 2218 size_type __sz = size(); 2219 __grow_by_and_replace(__cap, __n - __cap, __sz, 0, __sz, __n, __s); 2220 } 2221 return *this; 2222} 2223 2224template <class _CharT, class _Traits, class _Allocator> 2225basic_string<_CharT, _Traits, _Allocator>& 2226basic_string<_CharT, _Traits, _Allocator>::assign(size_type __n, value_type __c) 2227{ 2228 size_type __cap = capacity(); 2229 if (__cap < __n) 2230 { 2231 size_type __sz = size(); 2232 __grow_by(__cap, __n - __cap, __sz, 0, __sz); 2233 } 2234 else 2235 __invalidate_iterators_past(__n); 2236 value_type* __p = _VSTD::__to_address(__get_pointer()); 2237 traits_type::assign(__p, __n, __c); 2238 traits_type::assign(__p[__n], value_type()); 2239 __set_size(__n); 2240 return *this; 2241} 2242 2243template <class _CharT, class _Traits, class _Allocator> 2244basic_string<_CharT, _Traits, _Allocator>& 2245basic_string<_CharT, _Traits, _Allocator>::operator=(value_type __c) 2246{ 2247 pointer __p; 2248 if (__is_long()) 2249 { 2250 __p = __get_long_pointer(); 2251 __set_long_size(1); 2252 } 2253 else 2254 { 2255 __p = __get_short_pointer(); 2256 __set_short_size(1); 2257 } 2258 traits_type::assign(*__p, __c); 2259 traits_type::assign(*++__p, value_type()); 2260 __invalidate_iterators_past(1); 2261 return *this; 2262} 2263 2264template <class _CharT, class _Traits, class _Allocator> 2265basic_string<_CharT, _Traits, _Allocator>& 2266basic_string<_CharT, _Traits, _Allocator>::operator=(const basic_string& __str) 2267{ 2268 if (this != &__str) 2269 { 2270 __copy_assign_alloc(__str); 2271 return assign(__str.data(), __str.size()); 2272 } 2273 return *this; 2274} 2275 2276#ifndef _LIBCPP_CXX03_LANG 2277 2278template <class _CharT, class _Traits, class _Allocator> 2279inline 2280void 2281basic_string<_CharT, _Traits, _Allocator>::__move_assign(basic_string& __str, false_type) 2282 _NOEXCEPT_(__alloc_traits::is_always_equal::value) 2283{ 2284 if (__alloc() != __str.__alloc()) 2285 assign(__str); 2286 else 2287 __move_assign(__str, true_type()); 2288} 2289 2290template <class _CharT, class _Traits, class _Allocator> 2291inline 2292void 2293basic_string<_CharT, _Traits, _Allocator>::__move_assign(basic_string& __str, true_type) 2294#if _LIBCPP_STD_VER > 14 2295 _NOEXCEPT 2296#else 2297 _NOEXCEPT_(is_nothrow_move_assignable<allocator_type>::value) 2298#endif 2299{ 2300 if (__is_long()) { 2301 __alloc_traits::deallocate(__alloc(), __get_long_pointer(), 2302 __get_long_cap()); 2303#if _LIBCPP_STD_VER <= 14 2304 if (!is_nothrow_move_assignable<allocator_type>::value) { 2305 __set_short_size(0); 2306 traits_type::assign(__get_short_pointer()[0], value_type()); 2307 } 2308#endif 2309 } 2310 __move_assign_alloc(__str); 2311 __r_.first() = __str.__r_.first(); 2312 __str.__set_short_size(0); 2313 traits_type::assign(__str.__get_short_pointer()[0], value_type()); 2314} 2315 2316template <class _CharT, class _Traits, class _Allocator> 2317inline 2318basic_string<_CharT, _Traits, _Allocator>& 2319basic_string<_CharT, _Traits, _Allocator>::operator=(basic_string&& __str) 2320 _NOEXCEPT_((__noexcept_move_assign_container<_Allocator, __alloc_traits>::value)) 2321{ 2322 __move_assign(__str, integral_constant<bool, 2323 __alloc_traits::propagate_on_container_move_assignment::value>()); 2324 return *this; 2325} 2326 2327#endif 2328 2329template <class _CharT, class _Traits, class _Allocator> 2330template<class _InputIterator> 2331typename enable_if 2332< 2333 __is_exactly_cpp17_input_iterator <_InputIterator>::value 2334 || !__libcpp_string_gets_noexcept_iterator<_InputIterator>::value, 2335 basic_string<_CharT, _Traits, _Allocator>& 2336>::type 2337basic_string<_CharT, _Traits, _Allocator>::assign(_InputIterator __first, _InputIterator __last) 2338{ 2339 const basic_string __temp(__first, __last, __alloc()); 2340 assign(__temp.data(), __temp.size()); 2341 return *this; 2342} 2343 2344template <class _CharT, class _Traits, class _Allocator> 2345template<class _ForwardIterator> 2346typename enable_if 2347< 2348 __is_cpp17_forward_iterator<_ForwardIterator>::value 2349 && __libcpp_string_gets_noexcept_iterator<_ForwardIterator>::value, 2350 basic_string<_CharT, _Traits, _Allocator>& 2351>::type 2352basic_string<_CharT, _Traits, _Allocator>::assign(_ForwardIterator __first, _ForwardIterator __last) 2353{ 2354 size_type __n = static_cast<size_type>(_VSTD::distance(__first, __last)); 2355 size_type __cap = capacity(); 2356 if (__cap < __n) 2357 { 2358 size_type __sz = size(); 2359 __grow_by(__cap, __n - __cap, __sz, 0, __sz); 2360 } 2361 else 2362 __invalidate_iterators_past(__n); 2363 pointer __p = __get_pointer(); 2364 for (; __first != __last; ++__first, ++__p) 2365 traits_type::assign(*__p, *__first); 2366 traits_type::assign(*__p, value_type()); 2367 __set_size(__n); 2368 return *this; 2369} 2370 2371template <class _CharT, class _Traits, class _Allocator> 2372basic_string<_CharT, _Traits, _Allocator>& 2373basic_string<_CharT, _Traits, _Allocator>::assign(const basic_string& __str, size_type __pos, size_type __n) 2374{ 2375 size_type __sz = __str.size(); 2376 if (__pos > __sz) 2377 this->__throw_out_of_range(); 2378 return assign(__str.data() + __pos, _VSTD::min(__n, __sz - __pos)); 2379} 2380 2381template <class _CharT, class _Traits, class _Allocator> 2382template <class _Tp> 2383typename enable_if 2384< 2385 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 2386 basic_string<_CharT, _Traits, _Allocator>& 2387>::type 2388basic_string<_CharT, _Traits, _Allocator>::assign(const _Tp & __t, size_type __pos, size_type __n) 2389{ 2390 __self_view __sv = __t; 2391 size_type __sz = __sv.size(); 2392 if (__pos > __sz) 2393 this->__throw_out_of_range(); 2394 return assign(__sv.data() + __pos, _VSTD::min(__n, __sz - __pos)); 2395} 2396 2397 2398template <class _CharT, class _Traits, class _Allocator> 2399basic_string<_CharT, _Traits, _Allocator>& 2400basic_string<_CharT, _Traits, _Allocator>::assign(const value_type* __s) 2401{ 2402 _LIBCPP_ASSERT(__s != nullptr, "string::assign received nullptr"); 2403 return assign(__s, traits_type::length(__s)); 2404} 2405 2406// append 2407 2408template <class _CharT, class _Traits, class _Allocator> 2409basic_string<_CharT, _Traits, _Allocator>& 2410basic_string<_CharT, _Traits, _Allocator>::append(const value_type* __s, size_type __n) 2411{ 2412 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::append received nullptr"); 2413 size_type __cap = capacity(); 2414 size_type __sz = size(); 2415 if (__cap - __sz >= __n) 2416 { 2417 if (__n) 2418 { 2419 value_type* __p = _VSTD::__to_address(__get_pointer()); 2420 traits_type::copy(__p + __sz, __s, __n); 2421 __sz += __n; 2422 __set_size(__sz); 2423 traits_type::assign(__p[__sz], value_type()); 2424 } 2425 } 2426 else 2427 __grow_by_and_replace(__cap, __sz + __n - __cap, __sz, __sz, 0, __n, __s); 2428 return *this; 2429} 2430 2431template <class _CharT, class _Traits, class _Allocator> 2432basic_string<_CharT, _Traits, _Allocator>& 2433basic_string<_CharT, _Traits, _Allocator>::append(size_type __n, value_type __c) 2434{ 2435 if (__n) 2436 { 2437 size_type __cap = capacity(); 2438 size_type __sz = size(); 2439 if (__cap - __sz < __n) 2440 __grow_by(__cap, __sz + __n - __cap, __sz, __sz, 0); 2441 pointer __p = __get_pointer(); 2442 traits_type::assign(_VSTD::__to_address(__p) + __sz, __n, __c); 2443 __sz += __n; 2444 __set_size(__sz); 2445 traits_type::assign(__p[__sz], value_type()); 2446 } 2447 return *this; 2448} 2449 2450template <class _CharT, class _Traits, class _Allocator> 2451inline void 2452basic_string<_CharT, _Traits, _Allocator>::__append_default_init(size_type __n) 2453{ 2454 if (__n) 2455 { 2456 size_type __cap = capacity(); 2457 size_type __sz = size(); 2458 if (__cap - __sz < __n) 2459 __grow_by(__cap, __sz + __n - __cap, __sz, __sz, 0); 2460 pointer __p = __get_pointer(); 2461 __sz += __n; 2462 __set_size(__sz); 2463 traits_type::assign(__p[__sz], value_type()); 2464 } 2465} 2466 2467template <class _CharT, class _Traits, class _Allocator> 2468void 2469basic_string<_CharT, _Traits, _Allocator>::push_back(value_type __c) 2470{ 2471 bool __is_short = !__is_long(); 2472 size_type __cap; 2473 size_type __sz; 2474 if (__is_short) 2475 { 2476 __cap = __min_cap - 1; 2477 __sz = __get_short_size(); 2478 } 2479 else 2480 { 2481 __cap = __get_long_cap() - 1; 2482 __sz = __get_long_size(); 2483 } 2484 if (__sz == __cap) 2485 { 2486 __grow_by(__cap, 1, __sz, __sz, 0); 2487 __is_short = !__is_long(); 2488 } 2489 pointer __p; 2490 if (__is_short) 2491 { 2492 __p = __get_short_pointer() + __sz; 2493 __set_short_size(__sz+1); 2494 } 2495 else 2496 { 2497 __p = __get_long_pointer() + __sz; 2498 __set_long_size(__sz+1); 2499 } 2500 traits_type::assign(*__p, __c); 2501 traits_type::assign(*++__p, value_type()); 2502} 2503 2504template <class _Tp> 2505bool __ptr_in_range (const _Tp* __p, const _Tp* __first, const _Tp* __last) 2506{ 2507 return __first <= __p && __p < __last; 2508} 2509 2510template <class _Tp1, class _Tp2> 2511bool __ptr_in_range (const _Tp1*, const _Tp2*, const _Tp2*) 2512{ 2513 return false; 2514} 2515 2516template <class _CharT, class _Traits, class _Allocator> 2517template<class _ForwardIterator> 2518basic_string<_CharT, _Traits, _Allocator>& 2519basic_string<_CharT, _Traits, _Allocator>::__append_forward_unsafe( 2520 _ForwardIterator __first, _ForwardIterator __last) 2521{ 2522 static_assert(__is_cpp17_forward_iterator<_ForwardIterator>::value, 2523 "function requires a ForwardIterator"); 2524 size_type __sz = size(); 2525 size_type __cap = capacity(); 2526 size_type __n = static_cast<size_type>(_VSTD::distance(__first, __last)); 2527 if (__n) 2528 { 2529 typedef typename iterator_traits<_ForwardIterator>::reference _CharRef; 2530 _CharRef __tmp_ref = *__first; 2531 if (__ptr_in_range(_VSTD::addressof(__tmp_ref), data(), data() + size())) 2532 { 2533 const basic_string __temp (__first, __last, __alloc()); 2534 append(__temp.data(), __temp.size()); 2535 } 2536 else 2537 { 2538 if (__cap - __sz < __n) 2539 __grow_by(__cap, __sz + __n - __cap, __sz, __sz, 0); 2540 pointer __p = __get_pointer() + __sz; 2541 for (; __first != __last; ++__p, ++__first) 2542 traits_type::assign(*__p, *__first); 2543 traits_type::assign(*__p, value_type()); 2544 __set_size(__sz + __n); 2545 } 2546 } 2547 return *this; 2548} 2549 2550template <class _CharT, class _Traits, class _Allocator> 2551inline 2552basic_string<_CharT, _Traits, _Allocator>& 2553basic_string<_CharT, _Traits, _Allocator>::append(const basic_string& __str) 2554{ 2555 return append(__str.data(), __str.size()); 2556} 2557 2558template <class _CharT, class _Traits, class _Allocator> 2559basic_string<_CharT, _Traits, _Allocator>& 2560basic_string<_CharT, _Traits, _Allocator>::append(const basic_string& __str, size_type __pos, size_type __n) 2561{ 2562 size_type __sz = __str.size(); 2563 if (__pos > __sz) 2564 this->__throw_out_of_range(); 2565 return append(__str.data() + __pos, _VSTD::min(__n, __sz - __pos)); 2566} 2567 2568template <class _CharT, class _Traits, class _Allocator> 2569template <class _Tp> 2570 typename enable_if 2571 < 2572 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 2573 basic_string<_CharT, _Traits, _Allocator>& 2574 >::type 2575basic_string<_CharT, _Traits, _Allocator>::append(const _Tp & __t, size_type __pos, size_type __n) 2576{ 2577 __self_view __sv = __t; 2578 size_type __sz = __sv.size(); 2579 if (__pos > __sz) 2580 this->__throw_out_of_range(); 2581 return append(__sv.data() + __pos, _VSTD::min(__n, __sz - __pos)); 2582} 2583 2584template <class _CharT, class _Traits, class _Allocator> 2585basic_string<_CharT, _Traits, _Allocator>& 2586basic_string<_CharT, _Traits, _Allocator>::append(const value_type* __s) 2587{ 2588 _LIBCPP_ASSERT(__s != nullptr, "string::append received nullptr"); 2589 return append(__s, traits_type::length(__s)); 2590} 2591 2592// insert 2593 2594template <class _CharT, class _Traits, class _Allocator> 2595basic_string<_CharT, _Traits, _Allocator>& 2596basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos, const value_type* __s, size_type __n) 2597{ 2598 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::insert received nullptr"); 2599 size_type __sz = size(); 2600 if (__pos > __sz) 2601 this->__throw_out_of_range(); 2602 size_type __cap = capacity(); 2603 if (__cap - __sz >= __n) 2604 { 2605 if (__n) 2606 { 2607 value_type* __p = _VSTD::__to_address(__get_pointer()); 2608 size_type __n_move = __sz - __pos; 2609 if (__n_move != 0) 2610 { 2611 if (__p + __pos <= __s && __s < __p + __sz) 2612 __s += __n; 2613 traits_type::move(__p + __pos + __n, __p + __pos, __n_move); 2614 } 2615 traits_type::move(__p + __pos, __s, __n); 2616 __sz += __n; 2617 __set_size(__sz); 2618 traits_type::assign(__p[__sz], value_type()); 2619 } 2620 } 2621 else 2622 __grow_by_and_replace(__cap, __sz + __n - __cap, __sz, __pos, 0, __n, __s); 2623 return *this; 2624} 2625 2626template <class _CharT, class _Traits, class _Allocator> 2627basic_string<_CharT, _Traits, _Allocator>& 2628basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos, size_type __n, value_type __c) 2629{ 2630 size_type __sz = size(); 2631 if (__pos > __sz) 2632 this->__throw_out_of_range(); 2633 if (__n) 2634 { 2635 size_type __cap = capacity(); 2636 value_type* __p; 2637 if (__cap - __sz >= __n) 2638 { 2639 __p = _VSTD::__to_address(__get_pointer()); 2640 size_type __n_move = __sz - __pos; 2641 if (__n_move != 0) 2642 traits_type::move(__p + __pos + __n, __p + __pos, __n_move); 2643 } 2644 else 2645 { 2646 __grow_by(__cap, __sz + __n - __cap, __sz, __pos, 0, __n); 2647 __p = _VSTD::__to_address(__get_long_pointer()); 2648 } 2649 traits_type::assign(__p + __pos, __n, __c); 2650 __sz += __n; 2651 __set_size(__sz); 2652 traits_type::assign(__p[__sz], value_type()); 2653 } 2654 return *this; 2655} 2656 2657template <class _CharT, class _Traits, class _Allocator> 2658template<class _InputIterator> 2659typename enable_if 2660< 2661 __is_exactly_cpp17_input_iterator<_InputIterator>::value 2662 || !__libcpp_string_gets_noexcept_iterator<_InputIterator>::value, 2663 typename basic_string<_CharT, _Traits, _Allocator>::iterator 2664>::type 2665basic_string<_CharT, _Traits, _Allocator>::insert(const_iterator __pos, _InputIterator __first, _InputIterator __last) 2666{ 2667#if _LIBCPP_DEBUG_LEVEL >= 2 2668 _LIBCPP_ASSERT(__get_const_db()->__find_c_from_i(&__pos) == this, 2669 "string::insert(iterator, range) called with an iterator not" 2670 " referring to this string"); 2671#endif 2672 const basic_string __temp(__first, __last, __alloc()); 2673 return insert(__pos, __temp.data(), __temp.data() + __temp.size()); 2674} 2675 2676template <class _CharT, class _Traits, class _Allocator> 2677template<class _ForwardIterator> 2678typename enable_if 2679< 2680 __is_cpp17_forward_iterator<_ForwardIterator>::value 2681 && __libcpp_string_gets_noexcept_iterator<_ForwardIterator>::value, 2682 typename basic_string<_CharT, _Traits, _Allocator>::iterator 2683>::type 2684basic_string<_CharT, _Traits, _Allocator>::insert(const_iterator __pos, _ForwardIterator __first, _ForwardIterator __last) 2685{ 2686#if _LIBCPP_DEBUG_LEVEL >= 2 2687 _LIBCPP_ASSERT(__get_const_db()->__find_c_from_i(&__pos) == this, 2688 "string::insert(iterator, range) called with an iterator not" 2689 " referring to this string"); 2690#endif 2691 size_type __ip = static_cast<size_type>(__pos - begin()); 2692 size_type __n = static_cast<size_type>(_VSTD::distance(__first, __last)); 2693 if (__n) 2694 { 2695 typedef typename iterator_traits<_ForwardIterator>::reference _CharRef; 2696 _CharRef __tmp_char = *__first; 2697 if (__ptr_in_range(_VSTD::addressof(__tmp_char), data(), data() + size())) 2698 { 2699 const basic_string __temp(__first, __last, __alloc()); 2700 return insert(__pos, __temp.data(), __temp.data() + __temp.size()); 2701 } 2702 2703 size_type __sz = size(); 2704 size_type __cap = capacity(); 2705 value_type* __p; 2706 if (__cap - __sz >= __n) 2707 { 2708 __p = _VSTD::__to_address(__get_pointer()); 2709 size_type __n_move = __sz - __ip; 2710 if (__n_move != 0) 2711 traits_type::move(__p + __ip + __n, __p + __ip, __n_move); 2712 } 2713 else 2714 { 2715 __grow_by(__cap, __sz + __n - __cap, __sz, __ip, 0, __n); 2716 __p = _VSTD::__to_address(__get_long_pointer()); 2717 } 2718 __sz += __n; 2719 __set_size(__sz); 2720 traits_type::assign(__p[__sz], value_type()); 2721 for (__p += __ip; __first != __last; ++__p, ++__first) 2722 traits_type::assign(*__p, *__first); 2723 } 2724 return begin() + __ip; 2725} 2726 2727template <class _CharT, class _Traits, class _Allocator> 2728inline 2729basic_string<_CharT, _Traits, _Allocator>& 2730basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos1, const basic_string& __str) 2731{ 2732 return insert(__pos1, __str.data(), __str.size()); 2733} 2734 2735template <class _CharT, class _Traits, class _Allocator> 2736basic_string<_CharT, _Traits, _Allocator>& 2737basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos1, const basic_string& __str, 2738 size_type __pos2, size_type __n) 2739{ 2740 size_type __str_sz = __str.size(); 2741 if (__pos2 > __str_sz) 2742 this->__throw_out_of_range(); 2743 return insert(__pos1, __str.data() + __pos2, _VSTD::min(__n, __str_sz - __pos2)); 2744} 2745 2746template <class _CharT, class _Traits, class _Allocator> 2747template <class _Tp> 2748typename enable_if 2749< 2750 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 2751 basic_string<_CharT, _Traits, _Allocator>& 2752>::type 2753basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos1, const _Tp& __t, 2754 size_type __pos2, size_type __n) 2755{ 2756 __self_view __sv = __t; 2757 size_type __str_sz = __sv.size(); 2758 if (__pos2 > __str_sz) 2759 this->__throw_out_of_range(); 2760 return insert(__pos1, __sv.data() + __pos2, _VSTD::min(__n, __str_sz - __pos2)); 2761} 2762 2763template <class _CharT, class _Traits, class _Allocator> 2764basic_string<_CharT, _Traits, _Allocator>& 2765basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos, const value_type* __s) 2766{ 2767 _LIBCPP_ASSERT(__s != nullptr, "string::insert received nullptr"); 2768 return insert(__pos, __s, traits_type::length(__s)); 2769} 2770 2771template <class _CharT, class _Traits, class _Allocator> 2772typename basic_string<_CharT, _Traits, _Allocator>::iterator 2773basic_string<_CharT, _Traits, _Allocator>::insert(const_iterator __pos, value_type __c) 2774{ 2775 size_type __ip = static_cast<size_type>(__pos - begin()); 2776 size_type __sz = size(); 2777 size_type __cap = capacity(); 2778 value_type* __p; 2779 if (__cap == __sz) 2780 { 2781 __grow_by(__cap, 1, __sz, __ip, 0, 1); 2782 __p = _VSTD::__to_address(__get_long_pointer()); 2783 } 2784 else 2785 { 2786 __p = _VSTD::__to_address(__get_pointer()); 2787 size_type __n_move = __sz - __ip; 2788 if (__n_move != 0) 2789 traits_type::move(__p + __ip + 1, __p + __ip, __n_move); 2790 } 2791 traits_type::assign(__p[__ip], __c); 2792 traits_type::assign(__p[++__sz], value_type()); 2793 __set_size(__sz); 2794 return begin() + static_cast<difference_type>(__ip); 2795} 2796 2797template <class _CharT, class _Traits, class _Allocator> 2798inline 2799typename basic_string<_CharT, _Traits, _Allocator>::iterator 2800basic_string<_CharT, _Traits, _Allocator>::insert(const_iterator __pos, size_type __n, value_type __c) 2801{ 2802#if _LIBCPP_DEBUG_LEVEL >= 2 2803 _LIBCPP_ASSERT(__get_const_db()->__find_c_from_i(&__pos) == this, 2804 "string::insert(iterator, n, value) called with an iterator not" 2805 " referring to this string"); 2806#endif 2807 difference_type __p = __pos - begin(); 2808 insert(static_cast<size_type>(__p), __n, __c); 2809 return begin() + __p; 2810} 2811 2812// replace 2813 2814template <class _CharT, class _Traits, class _Allocator> 2815basic_string<_CharT, _Traits, _Allocator>& 2816basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos, size_type __n1, const value_type* __s, size_type __n2) 2817 _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK 2818{ 2819 _LIBCPP_ASSERT(__n2 == 0 || __s != nullptr, "string::replace received nullptr"); 2820 size_type __sz = size(); 2821 if (__pos > __sz) 2822 this->__throw_out_of_range(); 2823 __n1 = _VSTD::min(__n1, __sz - __pos); 2824 size_type __cap = capacity(); 2825 if (__cap - __sz + __n1 >= __n2) 2826 { 2827 value_type* __p = _VSTD::__to_address(__get_pointer()); 2828 if (__n1 != __n2) 2829 { 2830 size_type __n_move = __sz - __pos - __n1; 2831 if (__n_move != 0) 2832 { 2833 if (__n1 > __n2) 2834 { 2835 traits_type::move(__p + __pos, __s, __n2); 2836 traits_type::move(__p + __pos + __n2, __p + __pos + __n1, __n_move); 2837 goto __finish; 2838 } 2839 if (__p + __pos < __s && __s < __p + __sz) 2840 { 2841 if (__p + __pos + __n1 <= __s) 2842 __s += __n2 - __n1; 2843 else // __p + __pos < __s < __p + __pos + __n1 2844 { 2845 traits_type::move(__p + __pos, __s, __n1); 2846 __pos += __n1; 2847 __s += __n2; 2848 __n2 -= __n1; 2849 __n1 = 0; 2850 } 2851 } 2852 traits_type::move(__p + __pos + __n2, __p + __pos + __n1, __n_move); 2853 } 2854 } 2855 traits_type::move(__p + __pos, __s, __n2); 2856__finish: 2857// __sz += __n2 - __n1; in this and the below function below can cause unsigned integer overflow, 2858// but this is a safe operation, so we disable the check. 2859 __sz += __n2 - __n1; 2860 __set_size(__sz); 2861 __invalidate_iterators_past(__sz); 2862 traits_type::assign(__p[__sz], value_type()); 2863 } 2864 else 2865 __grow_by_and_replace(__cap, __sz - __n1 + __n2 - __cap, __sz, __pos, __n1, __n2, __s); 2866 return *this; 2867} 2868 2869template <class _CharT, class _Traits, class _Allocator> 2870basic_string<_CharT, _Traits, _Allocator>& 2871basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos, size_type __n1, size_type __n2, value_type __c) 2872 _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK 2873{ 2874 size_type __sz = size(); 2875 if (__pos > __sz) 2876 this->__throw_out_of_range(); 2877 __n1 = _VSTD::min(__n1, __sz - __pos); 2878 size_type __cap = capacity(); 2879 value_type* __p; 2880 if (__cap - __sz + __n1 >= __n2) 2881 { 2882 __p = _VSTD::__to_address(__get_pointer()); 2883 if (__n1 != __n2) 2884 { 2885 size_type __n_move = __sz - __pos - __n1; 2886 if (__n_move != 0) 2887 traits_type::move(__p + __pos + __n2, __p + __pos + __n1, __n_move); 2888 } 2889 } 2890 else 2891 { 2892 __grow_by(__cap, __sz - __n1 + __n2 - __cap, __sz, __pos, __n1, __n2); 2893 __p = _VSTD::__to_address(__get_long_pointer()); 2894 } 2895 traits_type::assign(__p + __pos, __n2, __c); 2896 __sz += __n2 - __n1; 2897 __set_size(__sz); 2898 __invalidate_iterators_past(__sz); 2899 traits_type::assign(__p[__sz], value_type()); 2900 return *this; 2901} 2902 2903template <class _CharT, class _Traits, class _Allocator> 2904template<class _InputIterator> 2905typename enable_if 2906< 2907 __is_cpp17_input_iterator<_InputIterator>::value, 2908 basic_string<_CharT, _Traits, _Allocator>& 2909>::type 2910basic_string<_CharT, _Traits, _Allocator>::replace(const_iterator __i1, const_iterator __i2, 2911 _InputIterator __j1, _InputIterator __j2) 2912{ 2913 const basic_string __temp(__j1, __j2, __alloc()); 2914 return this->replace(__i1, __i2, __temp); 2915} 2916 2917template <class _CharT, class _Traits, class _Allocator> 2918inline 2919basic_string<_CharT, _Traits, _Allocator>& 2920basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos1, size_type __n1, const basic_string& __str) 2921{ 2922 return replace(__pos1, __n1, __str.data(), __str.size()); 2923} 2924 2925template <class _CharT, class _Traits, class _Allocator> 2926basic_string<_CharT, _Traits, _Allocator>& 2927basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos1, size_type __n1, const basic_string& __str, 2928 size_type __pos2, size_type __n2) 2929{ 2930 size_type __str_sz = __str.size(); 2931 if (__pos2 > __str_sz) 2932 this->__throw_out_of_range(); 2933 return replace(__pos1, __n1, __str.data() + __pos2, _VSTD::min(__n2, __str_sz - __pos2)); 2934} 2935 2936template <class _CharT, class _Traits, class _Allocator> 2937template <class _Tp> 2938typename enable_if 2939< 2940 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 2941 basic_string<_CharT, _Traits, _Allocator>& 2942>::type 2943basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos1, size_type __n1, const _Tp& __t, 2944 size_type __pos2, size_type __n2) 2945{ 2946 __self_view __sv = __t; 2947 size_type __str_sz = __sv.size(); 2948 if (__pos2 > __str_sz) 2949 this->__throw_out_of_range(); 2950 return replace(__pos1, __n1, __sv.data() + __pos2, _VSTD::min(__n2, __str_sz - __pos2)); 2951} 2952 2953template <class _CharT, class _Traits, class _Allocator> 2954basic_string<_CharT, _Traits, _Allocator>& 2955basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos, size_type __n1, const value_type* __s) 2956{ 2957 _LIBCPP_ASSERT(__s != nullptr, "string::replace received nullptr"); 2958 return replace(__pos, __n1, __s, traits_type::length(__s)); 2959} 2960 2961template <class _CharT, class _Traits, class _Allocator> 2962inline 2963basic_string<_CharT, _Traits, _Allocator>& 2964basic_string<_CharT, _Traits, _Allocator>::replace(const_iterator __i1, const_iterator __i2, const basic_string& __str) 2965{ 2966 return replace(static_cast<size_type>(__i1 - begin()), static_cast<size_type>(__i2 - __i1), 2967 __str.data(), __str.size()); 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, size_type __n) 2974{ 2975 return replace(static_cast<size_type>(__i1 - begin()), static_cast<size_type>(__i2 - __i1), __s, __n); 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, const value_type* __s) 2982{ 2983 return replace(static_cast<size_type>(__i1 - begin()), static_cast<size_type>(__i2 - __i1), __s); 2984} 2985 2986template <class _CharT, class _Traits, class _Allocator> 2987inline 2988basic_string<_CharT, _Traits, _Allocator>& 2989basic_string<_CharT, _Traits, _Allocator>::replace(const_iterator __i1, const_iterator __i2, size_type __n, value_type __c) 2990{ 2991 return replace(static_cast<size_type>(__i1 - begin()), static_cast<size_type>(__i2 - __i1), __n, __c); 2992} 2993 2994// erase 2995 2996template <class _CharT, class _Traits, class _Allocator> 2997basic_string<_CharT, _Traits, _Allocator>& 2998basic_string<_CharT, _Traits, _Allocator>::erase(size_type __pos, size_type __n) 2999{ 3000 size_type __sz = size(); 3001 if (__pos > __sz) 3002 this->__throw_out_of_range(); 3003 if (__n) 3004 { 3005 value_type* __p = _VSTD::__to_address(__get_pointer()); 3006 __n = _VSTD::min(__n, __sz - __pos); 3007 size_type __n_move = __sz - __pos - __n; 3008 if (__n_move != 0) 3009 traits_type::move(__p + __pos, __p + __pos + __n, __n_move); 3010 __sz -= __n; 3011 __set_size(__sz); 3012 __invalidate_iterators_past(__sz); 3013 traits_type::assign(__p[__sz], value_type()); 3014 } 3015 return *this; 3016} 3017 3018template <class _CharT, class _Traits, class _Allocator> 3019inline 3020typename basic_string<_CharT, _Traits, _Allocator>::iterator 3021basic_string<_CharT, _Traits, _Allocator>::erase(const_iterator __pos) 3022{ 3023#if _LIBCPP_DEBUG_LEVEL >= 2 3024 _LIBCPP_ASSERT(__get_const_db()->__find_c_from_i(&__pos) == this, 3025 "string::erase(iterator) called with an iterator not" 3026 " referring to this string"); 3027#endif 3028 _LIBCPP_ASSERT(__pos != end(), 3029 "string::erase(iterator) called with a non-dereferenceable iterator"); 3030 iterator __b = begin(); 3031 size_type __r = static_cast<size_type>(__pos - __b); 3032 erase(__r, 1); 3033 return __b + static_cast<difference_type>(__r); 3034} 3035 3036template <class _CharT, class _Traits, class _Allocator> 3037inline 3038typename basic_string<_CharT, _Traits, _Allocator>::iterator 3039basic_string<_CharT, _Traits, _Allocator>::erase(const_iterator __first, const_iterator __last) 3040{ 3041#if _LIBCPP_DEBUG_LEVEL >= 2 3042 _LIBCPP_ASSERT(__get_const_db()->__find_c_from_i(&__first) == this, 3043 "string::erase(iterator, iterator) called with an iterator not" 3044 " referring to this string"); 3045#endif 3046 _LIBCPP_ASSERT(__first <= __last, "string::erase(first, last) called with invalid range"); 3047 iterator __b = begin(); 3048 size_type __r = static_cast<size_type>(__first - __b); 3049 erase(__r, static_cast<size_type>(__last - __first)); 3050 return __b + static_cast<difference_type>(__r); 3051} 3052 3053template <class _CharT, class _Traits, class _Allocator> 3054inline 3055void 3056basic_string<_CharT, _Traits, _Allocator>::pop_back() 3057{ 3058 _LIBCPP_ASSERT(!empty(), "string::pop_back(): string is already empty"); 3059 size_type __sz; 3060 if (__is_long()) 3061 { 3062 __sz = __get_long_size() - 1; 3063 __set_long_size(__sz); 3064 traits_type::assign(*(__get_long_pointer() + __sz), value_type()); 3065 } 3066 else 3067 { 3068 __sz = __get_short_size() - 1; 3069 __set_short_size(__sz); 3070 traits_type::assign(*(__get_short_pointer() + __sz), value_type()); 3071 } 3072 __invalidate_iterators_past(__sz); 3073} 3074 3075template <class _CharT, class _Traits, class _Allocator> 3076inline 3077void 3078basic_string<_CharT, _Traits, _Allocator>::clear() _NOEXCEPT 3079{ 3080 __invalidate_all_iterators(); 3081 if (__is_long()) 3082 { 3083 traits_type::assign(*__get_long_pointer(), value_type()); 3084 __set_long_size(0); 3085 } 3086 else 3087 { 3088 traits_type::assign(*__get_short_pointer(), value_type()); 3089 __set_short_size(0); 3090 } 3091} 3092 3093template <class _CharT, class _Traits, class _Allocator> 3094inline 3095void 3096basic_string<_CharT, _Traits, _Allocator>::__erase_to_end(size_type __pos) 3097{ 3098 if (__is_long()) 3099 { 3100 traits_type::assign(*(__get_long_pointer() + __pos), value_type()); 3101 __set_long_size(__pos); 3102 } 3103 else 3104 { 3105 traits_type::assign(*(__get_short_pointer() + __pos), value_type()); 3106 __set_short_size(__pos); 3107 } 3108 __invalidate_iterators_past(__pos); 3109} 3110 3111template <class _CharT, class _Traits, class _Allocator> 3112void 3113basic_string<_CharT, _Traits, _Allocator>::resize(size_type __n, value_type __c) 3114{ 3115 size_type __sz = size(); 3116 if (__n > __sz) 3117 append(__n - __sz, __c); 3118 else 3119 __erase_to_end(__n); 3120} 3121 3122template <class _CharT, class _Traits, class _Allocator> 3123inline void 3124basic_string<_CharT, _Traits, _Allocator>::__resize_default_init(size_type __n) 3125{ 3126 size_type __sz = size(); 3127 if (__n > __sz) { 3128 __append_default_init(__n - __sz); 3129 } else 3130 __erase_to_end(__n); 3131} 3132 3133template <class _CharT, class _Traits, class _Allocator> 3134inline 3135typename basic_string<_CharT, _Traits, _Allocator>::size_type 3136basic_string<_CharT, _Traits, _Allocator>::max_size() const _NOEXCEPT 3137{ 3138 size_type __m = __alloc_traits::max_size(__alloc()); 3139#ifdef _LIBCPP_BIG_ENDIAN 3140 return (__m <= ~__long_mask ? __m : __m/2) - __alignment; 3141#else 3142 return __m - __alignment; 3143#endif 3144} 3145 3146template <class _CharT, class _Traits, class _Allocator> 3147void 3148basic_string<_CharT, _Traits, _Allocator>::reserve(size_type __res_arg) 3149{ 3150 if (__res_arg > max_size()) 3151 this->__throw_length_error(); 3152 size_type __cap = capacity(); 3153 size_type __sz = size(); 3154 __res_arg = _VSTD::max(__res_arg, __sz); 3155 __res_arg = __recommend(__res_arg); 3156 if (__res_arg != __cap) 3157 { 3158 pointer __new_data, __p; 3159 bool __was_long, __now_long; 3160 if (__res_arg == __min_cap - 1) 3161 { 3162 __was_long = true; 3163 __now_long = false; 3164 __new_data = __get_short_pointer(); 3165 __p = __get_long_pointer(); 3166 } 3167 else 3168 { 3169 if (__res_arg > __cap) 3170 __new_data = __alloc_traits::allocate(__alloc(), __res_arg+1); 3171 else 3172 { 3173 #ifndef _LIBCPP_NO_EXCEPTIONS 3174 try 3175 { 3176 #endif // _LIBCPP_NO_EXCEPTIONS 3177 __new_data = __alloc_traits::allocate(__alloc(), __res_arg+1); 3178 #ifndef _LIBCPP_NO_EXCEPTIONS 3179 } 3180 catch (...) 3181 { 3182 return; 3183 } 3184 #else // _LIBCPP_NO_EXCEPTIONS 3185 if (__new_data == nullptr) 3186 return; 3187 #endif // _LIBCPP_NO_EXCEPTIONS 3188 } 3189 __now_long = true; 3190 __was_long = __is_long(); 3191 __p = __get_pointer(); 3192 } 3193 traits_type::copy(_VSTD::__to_address(__new_data), 3194 _VSTD::__to_address(__p), size()+1); 3195 if (__was_long) 3196 __alloc_traits::deallocate(__alloc(), __p, __cap+1); 3197 if (__now_long) 3198 { 3199 __set_long_cap(__res_arg+1); 3200 __set_long_size(__sz); 3201 __set_long_pointer(__new_data); 3202 } 3203 else 3204 __set_short_size(__sz); 3205 __invalidate_all_iterators(); 3206 } 3207} 3208 3209template <class _CharT, class _Traits, class _Allocator> 3210inline 3211typename basic_string<_CharT, _Traits, _Allocator>::const_reference 3212basic_string<_CharT, _Traits, _Allocator>::operator[](size_type __pos) const _NOEXCEPT 3213{ 3214 _LIBCPP_ASSERT(__pos <= size(), "string index out of bounds"); 3215 return *(data() + __pos); 3216} 3217 3218template <class _CharT, class _Traits, class _Allocator> 3219inline 3220typename basic_string<_CharT, _Traits, _Allocator>::reference 3221basic_string<_CharT, _Traits, _Allocator>::operator[](size_type __pos) _NOEXCEPT 3222{ 3223 _LIBCPP_ASSERT(__pos <= size(), "string index out of bounds"); 3224 return *(__get_pointer() + __pos); 3225} 3226 3227template <class _CharT, class _Traits, class _Allocator> 3228typename basic_string<_CharT, _Traits, _Allocator>::const_reference 3229basic_string<_CharT, _Traits, _Allocator>::at(size_type __n) const 3230{ 3231 if (__n >= size()) 3232 this->__throw_out_of_range(); 3233 return (*this)[__n]; 3234} 3235 3236template <class _CharT, class _Traits, class _Allocator> 3237typename basic_string<_CharT, _Traits, _Allocator>::reference 3238basic_string<_CharT, _Traits, _Allocator>::at(size_type __n) 3239{ 3240 if (__n >= size()) 3241 this->__throw_out_of_range(); 3242 return (*this)[__n]; 3243} 3244 3245template <class _CharT, class _Traits, class _Allocator> 3246inline 3247typename basic_string<_CharT, _Traits, _Allocator>::reference 3248basic_string<_CharT, _Traits, _Allocator>::front() _NOEXCEPT 3249{ 3250 _LIBCPP_ASSERT(!empty(), "string::front(): string is empty"); 3251 return *__get_pointer(); 3252} 3253 3254template <class _CharT, class _Traits, class _Allocator> 3255inline 3256typename basic_string<_CharT, _Traits, _Allocator>::const_reference 3257basic_string<_CharT, _Traits, _Allocator>::front() const _NOEXCEPT 3258{ 3259 _LIBCPP_ASSERT(!empty(), "string::front(): string is empty"); 3260 return *data(); 3261} 3262 3263template <class _CharT, class _Traits, class _Allocator> 3264inline 3265typename basic_string<_CharT, _Traits, _Allocator>::reference 3266basic_string<_CharT, _Traits, _Allocator>::back() _NOEXCEPT 3267{ 3268 _LIBCPP_ASSERT(!empty(), "string::back(): string is empty"); 3269 return *(__get_pointer() + size() - 1); 3270} 3271 3272template <class _CharT, class _Traits, class _Allocator> 3273inline 3274typename basic_string<_CharT, _Traits, _Allocator>::const_reference 3275basic_string<_CharT, _Traits, _Allocator>::back() const _NOEXCEPT 3276{ 3277 _LIBCPP_ASSERT(!empty(), "string::back(): string is empty"); 3278 return *(data() + size() - 1); 3279} 3280 3281template <class _CharT, class _Traits, class _Allocator> 3282typename basic_string<_CharT, _Traits, _Allocator>::size_type 3283basic_string<_CharT, _Traits, _Allocator>::copy(value_type* __s, size_type __n, size_type __pos) const 3284{ 3285 size_type __sz = size(); 3286 if (__pos > __sz) 3287 this->__throw_out_of_range(); 3288 size_type __rlen = _VSTD::min(__n, __sz - __pos); 3289 traits_type::copy(__s, data() + __pos, __rlen); 3290 return __rlen; 3291} 3292 3293template <class _CharT, class _Traits, class _Allocator> 3294inline 3295basic_string<_CharT, _Traits, _Allocator> 3296basic_string<_CharT, _Traits, _Allocator>::substr(size_type __pos, size_type __n) const 3297{ 3298 return basic_string(*this, __pos, __n, __alloc()); 3299} 3300 3301template <class _CharT, class _Traits, class _Allocator> 3302inline 3303void 3304basic_string<_CharT, _Traits, _Allocator>::swap(basic_string& __str) 3305#if _LIBCPP_STD_VER >= 14 3306 _NOEXCEPT 3307#else 3308 _NOEXCEPT_(!__alloc_traits::propagate_on_container_swap::value || 3309 __is_nothrow_swappable<allocator_type>::value) 3310#endif 3311{ 3312#if _LIBCPP_DEBUG_LEVEL >= 2 3313 if (!__is_long()) 3314 __get_db()->__invalidate_all(this); 3315 if (!__str.__is_long()) 3316 __get_db()->__invalidate_all(&__str); 3317 __get_db()->swap(this, &__str); 3318#endif 3319 _LIBCPP_ASSERT( 3320 __alloc_traits::propagate_on_container_swap::value || 3321 __alloc_traits::is_always_equal::value || 3322 __alloc() == __str.__alloc(), "swapping non-equal allocators"); 3323 _VSTD::swap(__r_.first(), __str.__r_.first()); 3324 __swap_allocator(__alloc(), __str.__alloc()); 3325} 3326 3327// find 3328 3329template <class _Traits> 3330struct _LIBCPP_HIDDEN __traits_eq 3331{ 3332 typedef typename _Traits::char_type char_type; 3333 _LIBCPP_INLINE_VISIBILITY 3334 bool operator()(const char_type& __x, const char_type& __y) _NOEXCEPT 3335 {return _Traits::eq(__x, __y);} 3336}; 3337 3338template<class _CharT, class _Traits, class _Allocator> 3339typename basic_string<_CharT, _Traits, _Allocator>::size_type 3340basic_string<_CharT, _Traits, _Allocator>::find(const value_type* __s, 3341 size_type __pos, 3342 size_type __n) const _NOEXCEPT 3343{ 3344 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::find(): received nullptr"); 3345 return __str_find<value_type, size_type, traits_type, npos> 3346 (data(), size(), __s, __pos, __n); 3347} 3348 3349template<class _CharT, class _Traits, class _Allocator> 3350inline 3351typename basic_string<_CharT, _Traits, _Allocator>::size_type 3352basic_string<_CharT, _Traits, _Allocator>::find(const basic_string& __str, 3353 size_type __pos) const _NOEXCEPT 3354{ 3355 return __str_find<value_type, size_type, traits_type, npos> 3356 (data(), size(), __str.data(), __pos, __str.size()); 3357} 3358 3359template<class _CharT, class _Traits, class _Allocator> 3360template <class _Tp> 3361typename enable_if 3362< 3363 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3364 typename basic_string<_CharT, _Traits, _Allocator>::size_type 3365>::type 3366basic_string<_CharT, _Traits, _Allocator>::find(const _Tp &__t, 3367 size_type __pos) const 3368{ 3369 __self_view __sv = __t; 3370 return __str_find<value_type, size_type, traits_type, npos> 3371 (data(), size(), __sv.data(), __pos, __sv.size()); 3372} 3373 3374template<class _CharT, class _Traits, class _Allocator> 3375inline 3376typename basic_string<_CharT, _Traits, _Allocator>::size_type 3377basic_string<_CharT, _Traits, _Allocator>::find(const value_type* __s, 3378 size_type __pos) const _NOEXCEPT 3379{ 3380 _LIBCPP_ASSERT(__s != nullptr, "string::find(): received nullptr"); 3381 return __str_find<value_type, size_type, traits_type, npos> 3382 (data(), size(), __s, __pos, traits_type::length(__s)); 3383} 3384 3385template<class _CharT, class _Traits, class _Allocator> 3386typename basic_string<_CharT, _Traits, _Allocator>::size_type 3387basic_string<_CharT, _Traits, _Allocator>::find(value_type __c, 3388 size_type __pos) const _NOEXCEPT 3389{ 3390 return __str_find<value_type, size_type, traits_type, npos> 3391 (data(), size(), __c, __pos); 3392} 3393 3394// rfind 3395 3396template<class _CharT, class _Traits, class _Allocator> 3397typename basic_string<_CharT, _Traits, _Allocator>::size_type 3398basic_string<_CharT, _Traits, _Allocator>::rfind(const value_type* __s, 3399 size_type __pos, 3400 size_type __n) const _NOEXCEPT 3401{ 3402 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::rfind(): received nullptr"); 3403 return __str_rfind<value_type, size_type, traits_type, npos> 3404 (data(), size(), __s, __pos, __n); 3405} 3406 3407template<class _CharT, class _Traits, class _Allocator> 3408inline 3409typename basic_string<_CharT, _Traits, _Allocator>::size_type 3410basic_string<_CharT, _Traits, _Allocator>::rfind(const basic_string& __str, 3411 size_type __pos) const _NOEXCEPT 3412{ 3413 return __str_rfind<value_type, size_type, traits_type, npos> 3414 (data(), size(), __str.data(), __pos, __str.size()); 3415} 3416 3417template<class _CharT, class _Traits, class _Allocator> 3418template <class _Tp> 3419typename enable_if 3420< 3421 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3422 typename basic_string<_CharT, _Traits, _Allocator>::size_type 3423>::type 3424basic_string<_CharT, _Traits, _Allocator>::rfind(const _Tp& __t, 3425 size_type __pos) const 3426{ 3427 __self_view __sv = __t; 3428 return __str_rfind<value_type, size_type, traits_type, npos> 3429 (data(), size(), __sv.data(), __pos, __sv.size()); 3430} 3431 3432template<class _CharT, class _Traits, class _Allocator> 3433inline 3434typename basic_string<_CharT, _Traits, _Allocator>::size_type 3435basic_string<_CharT, _Traits, _Allocator>::rfind(const value_type* __s, 3436 size_type __pos) const _NOEXCEPT 3437{ 3438 _LIBCPP_ASSERT(__s != nullptr, "string::rfind(): received nullptr"); 3439 return __str_rfind<value_type, size_type, traits_type, npos> 3440 (data(), size(), __s, __pos, traits_type::length(__s)); 3441} 3442 3443template<class _CharT, class _Traits, class _Allocator> 3444typename basic_string<_CharT, _Traits, _Allocator>::size_type 3445basic_string<_CharT, _Traits, _Allocator>::rfind(value_type __c, 3446 size_type __pos) const _NOEXCEPT 3447{ 3448 return __str_rfind<value_type, size_type, traits_type, npos> 3449 (data(), size(), __c, __pos); 3450} 3451 3452// find_first_of 3453 3454template<class _CharT, class _Traits, class _Allocator> 3455typename basic_string<_CharT, _Traits, _Allocator>::size_type 3456basic_string<_CharT, _Traits, _Allocator>::find_first_of(const value_type* __s, 3457 size_type __pos, 3458 size_type __n) const _NOEXCEPT 3459{ 3460 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::find_first_of(): received nullptr"); 3461 return __str_find_first_of<value_type, size_type, traits_type, npos> 3462 (data(), size(), __s, __pos, __n); 3463} 3464 3465template<class _CharT, class _Traits, class _Allocator> 3466inline 3467typename basic_string<_CharT, _Traits, _Allocator>::size_type 3468basic_string<_CharT, _Traits, _Allocator>::find_first_of(const basic_string& __str, 3469 size_type __pos) const _NOEXCEPT 3470{ 3471 return __str_find_first_of<value_type, size_type, traits_type, npos> 3472 (data(), size(), __str.data(), __pos, __str.size()); 3473} 3474 3475template<class _CharT, class _Traits, class _Allocator> 3476template <class _Tp> 3477typename enable_if 3478< 3479 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3480 typename basic_string<_CharT, _Traits, _Allocator>::size_type 3481>::type 3482basic_string<_CharT, _Traits, _Allocator>::find_first_of(const _Tp& __t, 3483 size_type __pos) const 3484{ 3485 __self_view __sv = __t; 3486 return __str_find_first_of<value_type, size_type, traits_type, npos> 3487 (data(), size(), __sv.data(), __pos, __sv.size()); 3488} 3489 3490template<class _CharT, class _Traits, class _Allocator> 3491inline 3492typename basic_string<_CharT, _Traits, _Allocator>::size_type 3493basic_string<_CharT, _Traits, _Allocator>::find_first_of(const value_type* __s, 3494 size_type __pos) const _NOEXCEPT 3495{ 3496 _LIBCPP_ASSERT(__s != nullptr, "string::find_first_of(): received nullptr"); 3497 return __str_find_first_of<value_type, size_type, traits_type, npos> 3498 (data(), size(), __s, __pos, traits_type::length(__s)); 3499} 3500 3501template<class _CharT, class _Traits, class _Allocator> 3502inline 3503typename basic_string<_CharT, _Traits, _Allocator>::size_type 3504basic_string<_CharT, _Traits, _Allocator>::find_first_of(value_type __c, 3505 size_type __pos) const _NOEXCEPT 3506{ 3507 return find(__c, __pos); 3508} 3509 3510// find_last_of 3511 3512template<class _CharT, class _Traits, class _Allocator> 3513typename basic_string<_CharT, _Traits, _Allocator>::size_type 3514basic_string<_CharT, _Traits, _Allocator>::find_last_of(const value_type* __s, 3515 size_type __pos, 3516 size_type __n) const _NOEXCEPT 3517{ 3518 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::find_last_of(): received nullptr"); 3519 return __str_find_last_of<value_type, size_type, traits_type, npos> 3520 (data(), size(), __s, __pos, __n); 3521} 3522 3523template<class _CharT, class _Traits, class _Allocator> 3524inline 3525typename basic_string<_CharT, _Traits, _Allocator>::size_type 3526basic_string<_CharT, _Traits, _Allocator>::find_last_of(const basic_string& __str, 3527 size_type __pos) const _NOEXCEPT 3528{ 3529 return __str_find_last_of<value_type, size_type, traits_type, npos> 3530 (data(), size(), __str.data(), __pos, __str.size()); 3531} 3532 3533template<class _CharT, class _Traits, class _Allocator> 3534template <class _Tp> 3535typename enable_if 3536< 3537 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3538 typename basic_string<_CharT, _Traits, _Allocator>::size_type 3539>::type 3540basic_string<_CharT, _Traits, _Allocator>::find_last_of(const _Tp& __t, 3541 size_type __pos) const 3542{ 3543 __self_view __sv = __t; 3544 return __str_find_last_of<value_type, size_type, traits_type, npos> 3545 (data(), size(), __sv.data(), __pos, __sv.size()); 3546} 3547 3548template<class _CharT, class _Traits, class _Allocator> 3549inline 3550typename basic_string<_CharT, _Traits, _Allocator>::size_type 3551basic_string<_CharT, _Traits, _Allocator>::find_last_of(const value_type* __s, 3552 size_type __pos) const _NOEXCEPT 3553{ 3554 _LIBCPP_ASSERT(__s != nullptr, "string::find_last_of(): received nullptr"); 3555 return __str_find_last_of<value_type, size_type, traits_type, npos> 3556 (data(), size(), __s, __pos, traits_type::length(__s)); 3557} 3558 3559template<class _CharT, class _Traits, class _Allocator> 3560inline 3561typename basic_string<_CharT, _Traits, _Allocator>::size_type 3562basic_string<_CharT, _Traits, _Allocator>::find_last_of(value_type __c, 3563 size_type __pos) const _NOEXCEPT 3564{ 3565 return rfind(__c, __pos); 3566} 3567 3568// find_first_not_of 3569 3570template<class _CharT, class _Traits, class _Allocator> 3571typename basic_string<_CharT, _Traits, _Allocator>::size_type 3572basic_string<_CharT, _Traits, _Allocator>::find_first_not_of(const value_type* __s, 3573 size_type __pos, 3574 size_type __n) const _NOEXCEPT 3575{ 3576 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::find_first_not_of(): received nullptr"); 3577 return __str_find_first_not_of<value_type, size_type, traits_type, npos> 3578 (data(), size(), __s, __pos, __n); 3579} 3580 3581template<class _CharT, class _Traits, class _Allocator> 3582inline 3583typename basic_string<_CharT, _Traits, _Allocator>::size_type 3584basic_string<_CharT, _Traits, _Allocator>::find_first_not_of(const basic_string& __str, 3585 size_type __pos) const _NOEXCEPT 3586{ 3587 return __str_find_first_not_of<value_type, size_type, traits_type, npos> 3588 (data(), size(), __str.data(), __pos, __str.size()); 3589} 3590 3591template<class _CharT, class _Traits, class _Allocator> 3592template <class _Tp> 3593typename enable_if 3594< 3595 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3596 typename basic_string<_CharT, _Traits, _Allocator>::size_type 3597>::type 3598basic_string<_CharT, _Traits, _Allocator>::find_first_not_of(const _Tp& __t, 3599 size_type __pos) const 3600{ 3601 __self_view __sv = __t; 3602 return __str_find_first_not_of<value_type, size_type, traits_type, npos> 3603 (data(), size(), __sv.data(), __pos, __sv.size()); 3604} 3605 3606template<class _CharT, class _Traits, class _Allocator> 3607inline 3608typename basic_string<_CharT, _Traits, _Allocator>::size_type 3609basic_string<_CharT, _Traits, _Allocator>::find_first_not_of(const value_type* __s, 3610 size_type __pos) const _NOEXCEPT 3611{ 3612 _LIBCPP_ASSERT(__s != nullptr, "string::find_first_not_of(): received nullptr"); 3613 return __str_find_first_not_of<value_type, size_type, traits_type, npos> 3614 (data(), size(), __s, __pos, traits_type::length(__s)); 3615} 3616 3617template<class _CharT, class _Traits, class _Allocator> 3618inline 3619typename basic_string<_CharT, _Traits, _Allocator>::size_type 3620basic_string<_CharT, _Traits, _Allocator>::find_first_not_of(value_type __c, 3621 size_type __pos) const _NOEXCEPT 3622{ 3623 return __str_find_first_not_of<value_type, size_type, traits_type, npos> 3624 (data(), size(), __c, __pos); 3625} 3626 3627// find_last_not_of 3628 3629template<class _CharT, class _Traits, class _Allocator> 3630typename basic_string<_CharT, _Traits, _Allocator>::size_type 3631basic_string<_CharT, _Traits, _Allocator>::find_last_not_of(const value_type* __s, 3632 size_type __pos, 3633 size_type __n) const _NOEXCEPT 3634{ 3635 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::find_last_not_of(): received nullptr"); 3636 return __str_find_last_not_of<value_type, size_type, traits_type, npos> 3637 (data(), size(), __s, __pos, __n); 3638} 3639 3640template<class _CharT, class _Traits, class _Allocator> 3641inline 3642typename basic_string<_CharT, _Traits, _Allocator>::size_type 3643basic_string<_CharT, _Traits, _Allocator>::find_last_not_of(const basic_string& __str, 3644 size_type __pos) const _NOEXCEPT 3645{ 3646 return __str_find_last_not_of<value_type, size_type, traits_type, npos> 3647 (data(), size(), __str.data(), __pos, __str.size()); 3648} 3649 3650template<class _CharT, class _Traits, class _Allocator> 3651template <class _Tp> 3652typename enable_if 3653< 3654 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3655 typename basic_string<_CharT, _Traits, _Allocator>::size_type 3656>::type 3657basic_string<_CharT, _Traits, _Allocator>::find_last_not_of(const _Tp& __t, 3658 size_type __pos) const 3659{ 3660 __self_view __sv = __t; 3661 return __str_find_last_not_of<value_type, size_type, traits_type, npos> 3662 (data(), size(), __sv.data(), __pos, __sv.size()); 3663} 3664 3665template<class _CharT, class _Traits, class _Allocator> 3666inline 3667typename basic_string<_CharT, _Traits, _Allocator>::size_type 3668basic_string<_CharT, _Traits, _Allocator>::find_last_not_of(const value_type* __s, 3669 size_type __pos) const _NOEXCEPT 3670{ 3671 _LIBCPP_ASSERT(__s != nullptr, "string::find_last_not_of(): received nullptr"); 3672 return __str_find_last_not_of<value_type, size_type, traits_type, npos> 3673 (data(), size(), __s, __pos, traits_type::length(__s)); 3674} 3675 3676template<class _CharT, class _Traits, class _Allocator> 3677inline 3678typename basic_string<_CharT, _Traits, _Allocator>::size_type 3679basic_string<_CharT, _Traits, _Allocator>::find_last_not_of(value_type __c, 3680 size_type __pos) const _NOEXCEPT 3681{ 3682 return __str_find_last_not_of<value_type, size_type, traits_type, npos> 3683 (data(), size(), __c, __pos); 3684} 3685 3686// compare 3687 3688template <class _CharT, class _Traits, class _Allocator> 3689template <class _Tp> 3690typename enable_if 3691< 3692 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3693 int 3694>::type 3695basic_string<_CharT, _Traits, _Allocator>::compare(const _Tp& __t) const 3696{ 3697 __self_view __sv = __t; 3698 size_t __lhs_sz = size(); 3699 size_t __rhs_sz = __sv.size(); 3700 int __result = traits_type::compare(data(), __sv.data(), 3701 _VSTD::min(__lhs_sz, __rhs_sz)); 3702 if (__result != 0) 3703 return __result; 3704 if (__lhs_sz < __rhs_sz) 3705 return -1; 3706 if (__lhs_sz > __rhs_sz) 3707 return 1; 3708 return 0; 3709} 3710 3711template <class _CharT, class _Traits, class _Allocator> 3712inline 3713int 3714basic_string<_CharT, _Traits, _Allocator>::compare(const basic_string& __str) const _NOEXCEPT 3715{ 3716 return compare(__self_view(__str)); 3717} 3718 3719template <class _CharT, class _Traits, class _Allocator> 3720int 3721basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1, 3722 size_type __n1, 3723 const value_type* __s, 3724 size_type __n2) const 3725{ 3726 _LIBCPP_ASSERT(__n2 == 0 || __s != nullptr, "string::compare(): received nullptr"); 3727 size_type __sz = size(); 3728 if (__pos1 > __sz || __n2 == npos) 3729 this->__throw_out_of_range(); 3730 size_type __rlen = _VSTD::min(__n1, __sz - __pos1); 3731 int __r = traits_type::compare(data() + __pos1, __s, _VSTD::min(__rlen, __n2)); 3732 if (__r == 0) 3733 { 3734 if (__rlen < __n2) 3735 __r = -1; 3736 else if (__rlen > __n2) 3737 __r = 1; 3738 } 3739 return __r; 3740} 3741 3742template <class _CharT, class _Traits, class _Allocator> 3743template <class _Tp> 3744typename enable_if 3745< 3746 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3747 int 3748>::type 3749basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1, 3750 size_type __n1, 3751 const _Tp& __t) const 3752{ 3753 __self_view __sv = __t; 3754 return compare(__pos1, __n1, __sv.data(), __sv.size()); 3755} 3756 3757template <class _CharT, class _Traits, class _Allocator> 3758inline 3759int 3760basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1, 3761 size_type __n1, 3762 const basic_string& __str) const 3763{ 3764 return compare(__pos1, __n1, __str.data(), __str.size()); 3765} 3766 3767template <class _CharT, class _Traits, class _Allocator> 3768template <class _Tp> 3769typename enable_if 3770< 3771 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3772 int 3773>::type 3774basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1, 3775 size_type __n1, 3776 const _Tp& __t, 3777 size_type __pos2, 3778 size_type __n2) const 3779{ 3780 __self_view __sv = __t; 3781 return __self_view(*this).substr(__pos1, __n1).compare(__sv.substr(__pos2, __n2)); 3782} 3783 3784template <class _CharT, class _Traits, class _Allocator> 3785int 3786basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1, 3787 size_type __n1, 3788 const basic_string& __str, 3789 size_type __pos2, 3790 size_type __n2) const 3791{ 3792 return compare(__pos1, __n1, __self_view(__str), __pos2, __n2); 3793} 3794 3795template <class _CharT, class _Traits, class _Allocator> 3796int 3797basic_string<_CharT, _Traits, _Allocator>::compare(const value_type* __s) const _NOEXCEPT 3798{ 3799 _LIBCPP_ASSERT(__s != nullptr, "string::compare(): received nullptr"); 3800 return compare(0, npos, __s, traits_type::length(__s)); 3801} 3802 3803template <class _CharT, class _Traits, class _Allocator> 3804int 3805basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1, 3806 size_type __n1, 3807 const value_type* __s) const 3808{ 3809 _LIBCPP_ASSERT(__s != nullptr, "string::compare(): received nullptr"); 3810 return compare(__pos1, __n1, __s, traits_type::length(__s)); 3811} 3812 3813// __invariants 3814 3815template<class _CharT, class _Traits, class _Allocator> 3816inline 3817bool 3818basic_string<_CharT, _Traits, _Allocator>::__invariants() const 3819{ 3820 if (size() > capacity()) 3821 return false; 3822 if (capacity() < __min_cap - 1) 3823 return false; 3824 if (data() == 0) 3825 return false; 3826 if (data()[size()] != value_type(0)) 3827 return false; 3828 return true; 3829} 3830 3831// __clear_and_shrink 3832 3833template<class _CharT, class _Traits, class _Allocator> 3834inline 3835void 3836basic_string<_CharT, _Traits, _Allocator>::__clear_and_shrink() _NOEXCEPT 3837{ 3838 clear(); 3839 if(__is_long()) 3840 { 3841 __alloc_traits::deallocate(__alloc(), __get_long_pointer(), capacity() + 1); 3842 __set_long_cap(0); 3843 __set_short_size(0); 3844 } 3845} 3846 3847// operator== 3848 3849template<class _CharT, class _Traits, class _Allocator> 3850inline _LIBCPP_INLINE_VISIBILITY 3851bool 3852operator==(const basic_string<_CharT, _Traits, _Allocator>& __lhs, 3853 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 3854{ 3855 size_t __lhs_sz = __lhs.size(); 3856 return __lhs_sz == __rhs.size() && _Traits::compare(__lhs.data(), 3857 __rhs.data(), 3858 __lhs_sz) == 0; 3859} 3860 3861template<class _Allocator> 3862inline _LIBCPP_INLINE_VISIBILITY 3863bool 3864operator==(const basic_string<char, char_traits<char>, _Allocator>& __lhs, 3865 const basic_string<char, char_traits<char>, _Allocator>& __rhs) _NOEXCEPT 3866{ 3867 size_t __lhs_sz = __lhs.size(); 3868 if (__lhs_sz != __rhs.size()) 3869 return false; 3870 const char* __lp = __lhs.data(); 3871 const char* __rp = __rhs.data(); 3872 if (__lhs.__is_long()) 3873 return char_traits<char>::compare(__lp, __rp, __lhs_sz) == 0; 3874 for (; __lhs_sz != 0; --__lhs_sz, ++__lp, ++__rp) 3875 if (*__lp != *__rp) 3876 return false; 3877 return true; 3878} 3879 3880template<class _CharT, class _Traits, class _Allocator> 3881inline _LIBCPP_INLINE_VISIBILITY 3882bool 3883operator==(const _CharT* __lhs, 3884 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 3885{ 3886 typedef basic_string<_CharT, _Traits, _Allocator> _String; 3887 _LIBCPP_ASSERT(__lhs != nullptr, "operator==(char*, basic_string): received nullptr"); 3888 size_t __lhs_len = _Traits::length(__lhs); 3889 if (__lhs_len != __rhs.size()) return false; 3890 return __rhs.compare(0, _String::npos, __lhs, __lhs_len) == 0; 3891} 3892 3893template<class _CharT, class _Traits, class _Allocator> 3894inline _LIBCPP_INLINE_VISIBILITY 3895bool 3896operator==(const basic_string<_CharT,_Traits,_Allocator>& __lhs, 3897 const _CharT* __rhs) _NOEXCEPT 3898{ 3899 typedef basic_string<_CharT, _Traits, _Allocator> _String; 3900 _LIBCPP_ASSERT(__rhs != nullptr, "operator==(basic_string, char*): received nullptr"); 3901 size_t __rhs_len = _Traits::length(__rhs); 3902 if (__rhs_len != __lhs.size()) return false; 3903 return __lhs.compare(0, _String::npos, __rhs, __rhs_len) == 0; 3904} 3905 3906template<class _CharT, class _Traits, class _Allocator> 3907inline _LIBCPP_INLINE_VISIBILITY 3908bool 3909operator!=(const basic_string<_CharT,_Traits,_Allocator>& __lhs, 3910 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 3911{ 3912 return !(__lhs == __rhs); 3913} 3914 3915template<class _CharT, class _Traits, class _Allocator> 3916inline _LIBCPP_INLINE_VISIBILITY 3917bool 3918operator!=(const _CharT* __lhs, 3919 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 3920{ 3921 return !(__lhs == __rhs); 3922} 3923 3924template<class _CharT, class _Traits, class _Allocator> 3925inline _LIBCPP_INLINE_VISIBILITY 3926bool 3927operator!=(const basic_string<_CharT, _Traits, _Allocator>& __lhs, 3928 const _CharT* __rhs) _NOEXCEPT 3929{ 3930 return !(__lhs == __rhs); 3931} 3932 3933// operator< 3934 3935template<class _CharT, class _Traits, class _Allocator> 3936inline _LIBCPP_INLINE_VISIBILITY 3937bool 3938operator< (const basic_string<_CharT, _Traits, _Allocator>& __lhs, 3939 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 3940{ 3941 return __lhs.compare(__rhs) < 0; 3942} 3943 3944template<class _CharT, class _Traits, class _Allocator> 3945inline _LIBCPP_INLINE_VISIBILITY 3946bool 3947operator< (const basic_string<_CharT, _Traits, _Allocator>& __lhs, 3948 const _CharT* __rhs) _NOEXCEPT 3949{ 3950 return __lhs.compare(__rhs) < 0; 3951} 3952 3953template<class _CharT, class _Traits, class _Allocator> 3954inline _LIBCPP_INLINE_VISIBILITY 3955bool 3956operator< (const _CharT* __lhs, 3957 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 3958{ 3959 return __rhs.compare(__lhs) > 0; 3960} 3961 3962// operator> 3963 3964template<class _CharT, class _Traits, class _Allocator> 3965inline _LIBCPP_INLINE_VISIBILITY 3966bool 3967operator> (const basic_string<_CharT, _Traits, _Allocator>& __lhs, 3968 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 3969{ 3970 return __rhs < __lhs; 3971} 3972 3973template<class _CharT, class _Traits, class _Allocator> 3974inline _LIBCPP_INLINE_VISIBILITY 3975bool 3976operator> (const basic_string<_CharT, _Traits, _Allocator>& __lhs, 3977 const _CharT* __rhs) _NOEXCEPT 3978{ 3979 return __rhs < __lhs; 3980} 3981 3982template<class _CharT, class _Traits, class _Allocator> 3983inline _LIBCPP_INLINE_VISIBILITY 3984bool 3985operator> (const _CharT* __lhs, 3986 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 3987{ 3988 return __rhs < __lhs; 3989} 3990 3991// operator<= 3992 3993template<class _CharT, class _Traits, class _Allocator> 3994inline _LIBCPP_INLINE_VISIBILITY 3995bool 3996operator<=(const basic_string<_CharT, _Traits, _Allocator>& __lhs, 3997 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 3998{ 3999 return !(__rhs < __lhs); 4000} 4001 4002template<class _CharT, class _Traits, class _Allocator> 4003inline _LIBCPP_INLINE_VISIBILITY 4004bool 4005operator<=(const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4006 const _CharT* __rhs) _NOEXCEPT 4007{ 4008 return !(__rhs < __lhs); 4009} 4010 4011template<class _CharT, class _Traits, class _Allocator> 4012inline _LIBCPP_INLINE_VISIBILITY 4013bool 4014operator<=(const _CharT* __lhs, 4015 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4016{ 4017 return !(__rhs < __lhs); 4018} 4019 4020// operator>= 4021 4022template<class _CharT, class _Traits, class _Allocator> 4023inline _LIBCPP_INLINE_VISIBILITY 4024bool 4025operator>=(const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4026 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4027{ 4028 return !(__lhs < __rhs); 4029} 4030 4031template<class _CharT, class _Traits, class _Allocator> 4032inline _LIBCPP_INLINE_VISIBILITY 4033bool 4034operator>=(const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4035 const _CharT* __rhs) _NOEXCEPT 4036{ 4037 return !(__lhs < __rhs); 4038} 4039 4040template<class _CharT, class _Traits, class _Allocator> 4041inline _LIBCPP_INLINE_VISIBILITY 4042bool 4043operator>=(const _CharT* __lhs, 4044 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4045{ 4046 return !(__lhs < __rhs); 4047} 4048 4049// operator + 4050 4051template<class _CharT, class _Traits, class _Allocator> 4052basic_string<_CharT, _Traits, _Allocator> 4053operator+(const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4054 const basic_string<_CharT, _Traits, _Allocator>& __rhs) 4055{ 4056 basic_string<_CharT, _Traits, _Allocator> __r(__lhs.get_allocator()); 4057 typename basic_string<_CharT, _Traits, _Allocator>::size_type __lhs_sz = __lhs.size(); 4058 typename basic_string<_CharT, _Traits, _Allocator>::size_type __rhs_sz = __rhs.size(); 4059 __r.__init(__lhs.data(), __lhs_sz, __lhs_sz + __rhs_sz); 4060 __r.append(__rhs.data(), __rhs_sz); 4061 return __r; 4062} 4063 4064template<class _CharT, class _Traits, class _Allocator> 4065basic_string<_CharT, _Traits, _Allocator> 4066operator+(const _CharT* __lhs , const basic_string<_CharT,_Traits,_Allocator>& __rhs) 4067{ 4068 basic_string<_CharT, _Traits, _Allocator> __r(__rhs.get_allocator()); 4069 typename basic_string<_CharT, _Traits, _Allocator>::size_type __lhs_sz = _Traits::length(__lhs); 4070 typename basic_string<_CharT, _Traits, _Allocator>::size_type __rhs_sz = __rhs.size(); 4071 __r.__init(__lhs, __lhs_sz, __lhs_sz + __rhs_sz); 4072 __r.append(__rhs.data(), __rhs_sz); 4073 return __r; 4074} 4075 4076template<class _CharT, class _Traits, class _Allocator> 4077basic_string<_CharT, _Traits, _Allocator> 4078operator+(_CharT __lhs, const basic_string<_CharT,_Traits,_Allocator>& __rhs) 4079{ 4080 basic_string<_CharT, _Traits, _Allocator> __r(__rhs.get_allocator()); 4081 typename basic_string<_CharT, _Traits, _Allocator>::size_type __rhs_sz = __rhs.size(); 4082 __r.__init(&__lhs, 1, 1 + __rhs_sz); 4083 __r.append(__rhs.data(), __rhs_sz); 4084 return __r; 4085} 4086 4087template<class _CharT, class _Traits, class _Allocator> 4088inline 4089basic_string<_CharT, _Traits, _Allocator> 4090operator+(const basic_string<_CharT, _Traits, _Allocator>& __lhs, const _CharT* __rhs) 4091{ 4092 basic_string<_CharT, _Traits, _Allocator> __r(__lhs.get_allocator()); 4093 typename basic_string<_CharT, _Traits, _Allocator>::size_type __lhs_sz = __lhs.size(); 4094 typename basic_string<_CharT, _Traits, _Allocator>::size_type __rhs_sz = _Traits::length(__rhs); 4095 __r.__init(__lhs.data(), __lhs_sz, __lhs_sz + __rhs_sz); 4096 __r.append(__rhs, __rhs_sz); 4097 return __r; 4098} 4099 4100template<class _CharT, class _Traits, class _Allocator> 4101basic_string<_CharT, _Traits, _Allocator> 4102operator+(const basic_string<_CharT, _Traits, _Allocator>& __lhs, _CharT __rhs) 4103{ 4104 basic_string<_CharT, _Traits, _Allocator> __r(__lhs.get_allocator()); 4105 typename basic_string<_CharT, _Traits, _Allocator>::size_type __lhs_sz = __lhs.size(); 4106 __r.__init(__lhs.data(), __lhs_sz, __lhs_sz + 1); 4107 __r.push_back(__rhs); 4108 return __r; 4109} 4110 4111#ifndef _LIBCPP_CXX03_LANG 4112 4113template<class _CharT, class _Traits, class _Allocator> 4114inline _LIBCPP_INLINE_VISIBILITY 4115basic_string<_CharT, _Traits, _Allocator> 4116operator+(basic_string<_CharT, _Traits, _Allocator>&& __lhs, const basic_string<_CharT, _Traits, _Allocator>& __rhs) 4117{ 4118 return _VSTD::move(__lhs.append(__rhs)); 4119} 4120 4121template<class _CharT, class _Traits, class _Allocator> 4122inline _LIBCPP_INLINE_VISIBILITY 4123basic_string<_CharT, _Traits, _Allocator> 4124operator+(const basic_string<_CharT, _Traits, _Allocator>& __lhs, basic_string<_CharT, _Traits, _Allocator>&& __rhs) 4125{ 4126 return _VSTD::move(__rhs.insert(0, __lhs)); 4127} 4128 4129template<class _CharT, class _Traits, class _Allocator> 4130inline _LIBCPP_INLINE_VISIBILITY 4131basic_string<_CharT, _Traits, _Allocator> 4132operator+(basic_string<_CharT, _Traits, _Allocator>&& __lhs, basic_string<_CharT, _Traits, _Allocator>&& __rhs) 4133{ 4134 return _VSTD::move(__lhs.append(__rhs)); 4135} 4136 4137template<class _CharT, class _Traits, class _Allocator> 4138inline _LIBCPP_INLINE_VISIBILITY 4139basic_string<_CharT, _Traits, _Allocator> 4140operator+(const _CharT* __lhs , basic_string<_CharT,_Traits,_Allocator>&& __rhs) 4141{ 4142 return _VSTD::move(__rhs.insert(0, __lhs)); 4143} 4144 4145template<class _CharT, class _Traits, class _Allocator> 4146inline _LIBCPP_INLINE_VISIBILITY 4147basic_string<_CharT, _Traits, _Allocator> 4148operator+(_CharT __lhs, basic_string<_CharT,_Traits,_Allocator>&& __rhs) 4149{ 4150 __rhs.insert(__rhs.begin(), __lhs); 4151 return _VSTD::move(__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, const _CharT* __rhs) 4158{ 4159 return _VSTD::move(__lhs.append(__rhs)); 4160} 4161 4162template<class _CharT, class _Traits, class _Allocator> 4163inline _LIBCPP_INLINE_VISIBILITY 4164basic_string<_CharT, _Traits, _Allocator> 4165operator+(basic_string<_CharT, _Traits, _Allocator>&& __lhs, _CharT __rhs) 4166{ 4167 __lhs.push_back(__rhs); 4168 return _VSTD::move(__lhs); 4169} 4170 4171#endif // _LIBCPP_CXX03_LANG 4172 4173// swap 4174 4175template<class _CharT, class _Traits, class _Allocator> 4176inline _LIBCPP_INLINE_VISIBILITY 4177void 4178swap(basic_string<_CharT, _Traits, _Allocator>& __lhs, 4179 basic_string<_CharT, _Traits, _Allocator>& __rhs) 4180 _NOEXCEPT_(_NOEXCEPT_(__lhs.swap(__rhs))) 4181{ 4182 __lhs.swap(__rhs); 4183} 4184 4185#ifndef _LIBCPP_NO_HAS_CHAR8_T 4186typedef basic_string<char8_t> u8string; 4187#endif 4188 4189#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS 4190typedef basic_string<char16_t> u16string; 4191typedef basic_string<char32_t> u32string; 4192#endif // _LIBCPP_HAS_NO_UNICODE_CHARS 4193 4194_LIBCPP_FUNC_VIS int stoi (const string& __str, size_t* __idx = 0, int __base = 10); 4195_LIBCPP_FUNC_VIS long stol (const string& __str, size_t* __idx = 0, int __base = 10); 4196_LIBCPP_FUNC_VIS unsigned long stoul (const string& __str, size_t* __idx = 0, int __base = 10); 4197_LIBCPP_FUNC_VIS long long stoll (const string& __str, size_t* __idx = 0, int __base = 10); 4198_LIBCPP_FUNC_VIS unsigned long long stoull(const string& __str, size_t* __idx = 0, int __base = 10); 4199 4200_LIBCPP_FUNC_VIS float stof (const string& __str, size_t* __idx = 0); 4201_LIBCPP_FUNC_VIS double stod (const string& __str, size_t* __idx = 0); 4202_LIBCPP_FUNC_VIS long double stold(const string& __str, size_t* __idx = 0); 4203 4204_LIBCPP_FUNC_VIS string to_string(int __val); 4205_LIBCPP_FUNC_VIS string to_string(unsigned __val); 4206_LIBCPP_FUNC_VIS string to_string(long __val); 4207_LIBCPP_FUNC_VIS string to_string(unsigned long __val); 4208_LIBCPP_FUNC_VIS string to_string(long long __val); 4209_LIBCPP_FUNC_VIS string to_string(unsigned long long __val); 4210_LIBCPP_FUNC_VIS string to_string(float __val); 4211_LIBCPP_FUNC_VIS string to_string(double __val); 4212_LIBCPP_FUNC_VIS string to_string(long double __val); 4213 4214_LIBCPP_FUNC_VIS int stoi (const wstring& __str, size_t* __idx = 0, int __base = 10); 4215_LIBCPP_FUNC_VIS long stol (const wstring& __str, size_t* __idx = 0, int __base = 10); 4216_LIBCPP_FUNC_VIS unsigned long stoul (const wstring& __str, size_t* __idx = 0, int __base = 10); 4217_LIBCPP_FUNC_VIS long long stoll (const wstring& __str, size_t* __idx = 0, int __base = 10); 4218_LIBCPP_FUNC_VIS unsigned long long stoull(const wstring& __str, size_t* __idx = 0, int __base = 10); 4219 4220_LIBCPP_FUNC_VIS float stof (const wstring& __str, size_t* __idx = 0); 4221_LIBCPP_FUNC_VIS double stod (const wstring& __str, size_t* __idx = 0); 4222_LIBCPP_FUNC_VIS long double stold(const wstring& __str, size_t* __idx = 0); 4223 4224_LIBCPP_FUNC_VIS wstring to_wstring(int __val); 4225_LIBCPP_FUNC_VIS wstring to_wstring(unsigned __val); 4226_LIBCPP_FUNC_VIS wstring to_wstring(long __val); 4227_LIBCPP_FUNC_VIS wstring to_wstring(unsigned long __val); 4228_LIBCPP_FUNC_VIS wstring to_wstring(long long __val); 4229_LIBCPP_FUNC_VIS wstring to_wstring(unsigned long long __val); 4230_LIBCPP_FUNC_VIS wstring to_wstring(float __val); 4231_LIBCPP_FUNC_VIS wstring to_wstring(double __val); 4232_LIBCPP_FUNC_VIS wstring to_wstring(long double __val); 4233 4234template<class _CharT, class _Traits, class _Allocator> 4235 const typename basic_string<_CharT, _Traits, _Allocator>::size_type 4236 basic_string<_CharT, _Traits, _Allocator>::npos; 4237 4238template <class _CharT, class _Allocator> 4239struct _LIBCPP_TEMPLATE_VIS 4240 hash<basic_string<_CharT, char_traits<_CharT>, _Allocator> > 4241 : public unary_function< 4242 basic_string<_CharT, char_traits<_CharT>, _Allocator>, size_t> 4243{ 4244 size_t 4245 operator()(const basic_string<_CharT, char_traits<_CharT>, _Allocator>& __val) const _NOEXCEPT 4246 { return __do_string_hash(__val.data(), __val.data() + __val.size()); } 4247}; 4248 4249 4250template<class _CharT, class _Traits, class _Allocator> 4251basic_ostream<_CharT, _Traits>& 4252operator<<(basic_ostream<_CharT, _Traits>& __os, 4253 const basic_string<_CharT, _Traits, _Allocator>& __str); 4254 4255template<class _CharT, class _Traits, class _Allocator> 4256basic_istream<_CharT, _Traits>& 4257operator>>(basic_istream<_CharT, _Traits>& __is, 4258 basic_string<_CharT, _Traits, _Allocator>& __str); 4259 4260template<class _CharT, class _Traits, class _Allocator> 4261basic_istream<_CharT, _Traits>& 4262getline(basic_istream<_CharT, _Traits>& __is, 4263 basic_string<_CharT, _Traits, _Allocator>& __str, _CharT __dlm); 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); 4270 4271#ifndef _LIBCPP_CXX03_LANG 4272 4273template<class _CharT, class _Traits, class _Allocator> 4274inline _LIBCPP_INLINE_VISIBILITY 4275basic_istream<_CharT, _Traits>& 4276getline(basic_istream<_CharT, _Traits>&& __is, 4277 basic_string<_CharT, _Traits, _Allocator>& __str, _CharT __dlm); 4278 4279template<class _CharT, class _Traits, class _Allocator> 4280inline _LIBCPP_INLINE_VISIBILITY 4281basic_istream<_CharT, _Traits>& 4282getline(basic_istream<_CharT, _Traits>&& __is, 4283 basic_string<_CharT, _Traits, _Allocator>& __str); 4284 4285#endif // _LIBCPP_CXX03_LANG 4286 4287#if _LIBCPP_STD_VER > 17 4288template<class _CharT, class _Traits, class _Allocator, class _Up> 4289inline _LIBCPP_INLINE_VISIBILITY 4290void erase(basic_string<_CharT, _Traits, _Allocator>& __str, const _Up& __v) 4291{ __str.erase(_VSTD::remove(__str.begin(), __str.end(), __v), __str.end()); } 4292 4293template<class _CharT, class _Traits, class _Allocator, class _Predicate> 4294inline _LIBCPP_INLINE_VISIBILITY 4295void erase_if(basic_string<_CharT, _Traits, _Allocator>& __str, _Predicate __pred) 4296{ __str.erase(_VSTD::remove_if(__str.begin(), __str.end(), __pred), __str.end()); } 4297#endif 4298 4299#if _LIBCPP_DEBUG_LEVEL >= 2 4300 4301template<class _CharT, class _Traits, class _Allocator> 4302bool 4303basic_string<_CharT, _Traits, _Allocator>::__dereferenceable(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>::__decrementable(const const_iterator* __i) const 4312{ 4313 return this->data() < _VSTD::__to_address(__i->base()) && 4314 _VSTD::__to_address(__i->base()) <= this->data() + this->size(); 4315} 4316 4317template<class _CharT, class _Traits, class _Allocator> 4318bool 4319basic_string<_CharT, _Traits, _Allocator>::__addable(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 4325template<class _CharT, class _Traits, class _Allocator> 4326bool 4327basic_string<_CharT, _Traits, _Allocator>::__subscriptable(const const_iterator* __i, ptrdiff_t __n) const 4328{ 4329 const value_type* __p = _VSTD::__to_address(__i->base()) + __n; 4330 return this->data() <= __p && __p < this->data() + this->size(); 4331} 4332 4333#endif // _LIBCPP_DEBUG_LEVEL >= 2 4334 4335 4336#if _LIBCPP_STD_VER > 11 4337// Literal suffixes for basic_string [basic.string.literals] 4338inline namespace literals 4339{ 4340 inline namespace string_literals 4341 { 4342 inline _LIBCPP_INLINE_VISIBILITY 4343 basic_string<char> operator "" s( const char *__str, size_t __len ) 4344 { 4345 return basic_string<char> (__str, __len); 4346 } 4347 4348 inline _LIBCPP_INLINE_VISIBILITY 4349 basic_string<wchar_t> operator "" s( const wchar_t *__str, size_t __len ) 4350 { 4351 return basic_string<wchar_t> (__str, __len); 4352 } 4353 4354#ifndef _LIBCPP_NO_HAS_CHAR8_T 4355 inline _LIBCPP_INLINE_VISIBILITY 4356 basic_string<char8_t> operator "" s(const char8_t *__str, size_t __len) _NOEXCEPT 4357 { 4358 return basic_string<char8_t> (__str, __len); 4359 } 4360#endif 4361 4362 inline _LIBCPP_INLINE_VISIBILITY 4363 basic_string<char16_t> operator "" s( const char16_t *__str, size_t __len ) 4364 { 4365 return basic_string<char16_t> (__str, __len); 4366 } 4367 4368 inline _LIBCPP_INLINE_VISIBILITY 4369 basic_string<char32_t> operator "" s( const char32_t *__str, size_t __len ) 4370 { 4371 return basic_string<char32_t> (__str, __len); 4372 } 4373 } 4374} 4375#endif 4376 4377_LIBCPP_END_NAMESPACE_STD 4378 4379_LIBCPP_POP_MACROS 4380 4381#endif // _LIBCPP_STRING 4382