1// -*- C++ -*- 2//===----------------------------------------------------------------------===// 3// 4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 5// See https://llvm.org/LICENSE.txt for license information. 6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 7// 8//===----------------------------------------------------------------------===// 9 10#ifndef _LIBCPP_STRING 11#define _LIBCPP_STRING 12 13/* 14 string synopsis 15 16namespace std 17{ 18 19template <class stateT> 20class fpos 21{ 22private: 23 stateT st; 24public: 25 fpos(streamoff = streamoff()); 26 27 operator streamoff() const; 28 29 stateT state() const; 30 void state(stateT); 31 32 fpos& operator+=(streamoff); 33 fpos operator+ (streamoff) const; 34 fpos& operator-=(streamoff); 35 fpos operator- (streamoff) const; 36}; 37 38template <class stateT> streamoff operator-(const fpos<stateT>& x, const fpos<stateT>& y); 39 40template <class stateT> bool operator==(const fpos<stateT>& x, const fpos<stateT>& y); 41template <class stateT> bool operator!=(const fpos<stateT>& x, const fpos<stateT>& y); 42 43template <class charT> 44struct char_traits 45{ 46 typedef charT char_type; 47 typedef ... int_type; 48 typedef streamoff off_type; 49 typedef streampos pos_type; 50 typedef mbstate_t state_type; 51 52 static void assign(char_type& c1, const char_type& c2) noexcept; 53 static constexpr bool eq(char_type c1, char_type c2) noexcept; 54 static constexpr bool lt(char_type c1, char_type c2) noexcept; 55 56 static int compare(const char_type* s1, const char_type* s2, size_t n); 57 static size_t length(const char_type* s); 58 static const char_type* find(const char_type* s, size_t n, const char_type& a); 59 static char_type* move(char_type* s1, const char_type* s2, size_t n); 60 static char_type* copy(char_type* s1, const char_type* s2, size_t n); 61 static char_type* assign(char_type* s, size_t n, char_type a); 62 63 static constexpr int_type not_eof(int_type c) noexcept; 64 static constexpr char_type to_char_type(int_type c) noexcept; 65 static constexpr int_type to_int_type(char_type c) noexcept; 66 static constexpr bool eq_int_type(int_type c1, int_type c2) noexcept; 67 static constexpr int_type eof() noexcept; 68}; 69 70template <> struct char_traits<char>; 71template <> struct char_traits<wchar_t>; 72template <> struct char_traits<char8_t>; // C++20 73template <> struct char_traits<char16_t>; 74template <> struct char_traits<char32_t>; 75 76template<class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> > 77class basic_string 78{ 79public: 80// types: 81 typedef traits traits_type; 82 typedef typename traits_type::char_type value_type; 83 typedef Allocator allocator_type; 84 typedef typename allocator_type::size_type size_type; 85 typedef typename allocator_type::difference_type difference_type; 86 typedef typename allocator_type::reference reference; 87 typedef typename allocator_type::const_reference const_reference; 88 typedef typename allocator_type::pointer pointer; 89 typedef typename allocator_type::const_pointer const_pointer; 90 typedef implementation-defined iterator; 91 typedef implementation-defined const_iterator; 92 typedef std::reverse_iterator<iterator> reverse_iterator; 93 typedef std::reverse_iterator<const_iterator> const_reverse_iterator; 94 95 static const size_type npos = -1; 96 97 basic_string() 98 noexcept(is_nothrow_default_constructible<allocator_type>::value); 99 explicit basic_string(const allocator_type& a); 100 basic_string(const basic_string& str); 101 basic_string(basic_string&& str) 102 noexcept(is_nothrow_move_constructible<allocator_type>::value); 103 basic_string(const basic_string& str, size_type pos, 104 const allocator_type& a = allocator_type()); 105 basic_string(const basic_string& str, size_type pos, size_type n, 106 const Allocator& a = Allocator()); 107 template<class T> 108 basic_string(const T& t, size_type pos, size_type n, const Allocator& a = Allocator()); // C++17 109 template <class T> 110 explicit basic_string(const T& t, const Allocator& a = Allocator()); // C++17 111 basic_string(const value_type* s, const allocator_type& a = allocator_type()); 112 basic_string(const value_type* s, size_type n, const allocator_type& a = allocator_type()); 113 basic_string(nullptr_t) = delete; // C++2b 114 basic_string(size_type n, value_type c, const allocator_type& a = allocator_type()); 115 template<class InputIterator> 116 basic_string(InputIterator begin, InputIterator end, 117 const allocator_type& a = allocator_type()); 118 basic_string(initializer_list<value_type>, const Allocator& = Allocator()); 119 basic_string(const basic_string&, const Allocator&); 120 basic_string(basic_string&&, const Allocator&); 121 122 ~basic_string(); 123 124 operator basic_string_view<charT, traits>() const noexcept; 125 126 basic_string& operator=(const basic_string& str); 127 template <class T> 128 basic_string& operator=(const T& t); // C++17 129 basic_string& operator=(basic_string&& str) 130 noexcept( 131 allocator_type::propagate_on_container_move_assignment::value || 132 allocator_type::is_always_equal::value ); // C++17 133 basic_string& operator=(const value_type* s); 134 basic_string& operator=(nullptr_t) = delete; // C++2b 135 basic_string& operator=(value_type c); 136 basic_string& operator=(initializer_list<value_type>); 137 138 iterator begin() noexcept; 139 const_iterator begin() const noexcept; 140 iterator end() noexcept; 141 const_iterator end() const noexcept; 142 143 reverse_iterator rbegin() noexcept; 144 const_reverse_iterator rbegin() const noexcept; 145 reverse_iterator rend() noexcept; 146 const_reverse_iterator rend() const noexcept; 147 148 const_iterator cbegin() const noexcept; 149 const_iterator cend() const noexcept; 150 const_reverse_iterator crbegin() const noexcept; 151 const_reverse_iterator crend() const noexcept; 152 153 size_type size() const noexcept; 154 size_type length() const noexcept; 155 size_type max_size() const noexcept; 156 size_type capacity() const noexcept; 157 158 void resize(size_type n, value_type c); 159 void resize(size_type n); 160 161 void reserve(size_type res_arg); 162 void reserve(); // deprecated in C++20 163 void shrink_to_fit(); 164 void clear() noexcept; 165 bool empty() const noexcept; 166 167 const_reference operator[](size_type pos) const; 168 reference operator[](size_type pos); 169 170 const_reference at(size_type n) const; 171 reference at(size_type n); 172 173 basic_string& operator+=(const basic_string& str); 174 template <class T> 175 basic_string& operator+=(const T& t); // C++17 176 basic_string& operator+=(const value_type* s); 177 basic_string& operator+=(value_type c); 178 basic_string& operator+=(initializer_list<value_type>); 179 180 basic_string& append(const basic_string& str); 181 template <class T> 182 basic_string& append(const T& t); // C++17 183 basic_string& append(const basic_string& str, size_type pos, size_type n=npos); //C++14 184 template <class T> 185 basic_string& append(const T& t, size_type pos, size_type n=npos); // C++17 186 basic_string& append(const value_type* s, size_type n); 187 basic_string& append(const value_type* s); 188 basic_string& append(size_type n, value_type c); 189 template<class InputIterator> 190 basic_string& append(InputIterator first, InputIterator last); 191 basic_string& append(initializer_list<value_type>); 192 193 void push_back(value_type c); 194 void pop_back(); 195 reference front(); 196 const_reference front() const; 197 reference back(); 198 const_reference back() const; 199 200 basic_string& assign(const basic_string& str); 201 template <class T> 202 basic_string& assign(const T& t); // C++17 203 basic_string& assign(basic_string&& str); 204 basic_string& assign(const basic_string& str, size_type pos, size_type n=npos); // C++14 205 template <class T> 206 basic_string& assign(const T& t, size_type pos, size_type n=npos); // C++17 207 basic_string& assign(const value_type* s, size_type n); 208 basic_string& assign(const value_type* s); 209 basic_string& assign(size_type n, value_type c); 210 template<class InputIterator> 211 basic_string& assign(InputIterator first, InputIterator last); 212 basic_string& assign(initializer_list<value_type>); 213 214 basic_string& insert(size_type pos1, const basic_string& str); 215 template <class T> 216 basic_string& insert(size_type pos1, const T& t); 217 basic_string& insert(size_type pos1, const basic_string& str, 218 size_type pos2, size_type n); 219 template <class T> 220 basic_string& insert(size_type pos1, const T& t, size_type pos2, size_type n); // C++17 221 basic_string& insert(size_type pos, const value_type* s, size_type n=npos); //C++14 222 basic_string& insert(size_type pos, const value_type* s); 223 basic_string& insert(size_type pos, size_type n, value_type c); 224 iterator insert(const_iterator p, value_type c); 225 iterator insert(const_iterator p, size_type n, value_type c); 226 template<class InputIterator> 227 iterator insert(const_iterator p, InputIterator first, InputIterator last); 228 iterator insert(const_iterator p, initializer_list<value_type>); 229 230 basic_string& erase(size_type pos = 0, size_type n = npos); 231 iterator erase(const_iterator position); 232 iterator erase(const_iterator first, const_iterator last); 233 234 basic_string& replace(size_type pos1, size_type n1, const basic_string& str); 235 template <class T> 236 basic_string& replace(size_type pos1, size_type n1, const T& t); // C++17 237 basic_string& replace(size_type pos1, size_type n1, const basic_string& str, 238 size_type pos2, size_type n2=npos); // C++14 239 template <class T> 240 basic_string& replace(size_type pos1, size_type n1, const T& t, 241 size_type pos2, size_type n); // C++17 242 basic_string& replace(size_type pos, size_type n1, const value_type* s, size_type n2); 243 basic_string& replace(size_type pos, size_type n1, const value_type* s); 244 basic_string& replace(size_type pos, size_type n1, size_type n2, value_type c); 245 basic_string& replace(const_iterator i1, const_iterator i2, const basic_string& str); 246 template <class T> 247 basic_string& replace(const_iterator i1, const_iterator i2, const T& t); // C++17 248 basic_string& replace(const_iterator i1, const_iterator i2, const value_type* s, size_type n); 249 basic_string& replace(const_iterator i1, const_iterator i2, const value_type* s); 250 basic_string& replace(const_iterator i1, const_iterator i2, size_type n, value_type c); 251 template<class InputIterator> 252 basic_string& replace(const_iterator i1, const_iterator i2, InputIterator j1, InputIterator j2); 253 basic_string& replace(const_iterator i1, const_iterator i2, initializer_list<value_type>); 254 255 size_type copy(value_type* s, size_type n, size_type pos = 0) const; 256 basic_string substr(size_type pos = 0, size_type n = npos) const; 257 258 void swap(basic_string& str) 259 noexcept(allocator_traits<allocator_type>::propagate_on_container_swap::value || 260 allocator_traits<allocator_type>::is_always_equal::value); // C++17 261 262 const value_type* c_str() const noexcept; 263 const value_type* data() const noexcept; 264 value_type* data() noexcept; // C++17 265 266 allocator_type get_allocator() const noexcept; 267 268 size_type find(const basic_string& str, size_type pos = 0) const noexcept; 269 template <class T> 270 size_type find(const T& t, size_type pos = 0) const noexcept; // C++17, noexcept as an extension 271 size_type find(const value_type* s, size_type pos, size_type n) const noexcept; 272 size_type find(const value_type* s, size_type pos = 0) const noexcept; 273 size_type find(value_type c, size_type pos = 0) const noexcept; 274 275 size_type rfind(const basic_string& str, size_type pos = npos) const noexcept; 276 template <class T> 277 size_type rfind(const T& t, size_type pos = npos) const noexcept; // C++17, noexcept as an extension 278 size_type rfind(const value_type* s, size_type pos, size_type n) const noexcept; 279 size_type rfind(const value_type* s, size_type pos = npos) const noexcept; 280 size_type rfind(value_type c, size_type pos = npos) const noexcept; 281 282 size_type find_first_of(const basic_string& str, size_type pos = 0) const noexcept; 283 template <class T> 284 size_type find_first_of(const T& t, size_type pos = 0) const noexcept; // C++17, noexcept as an extension 285 size_type find_first_of(const value_type* s, size_type pos, size_type n) const noexcept; 286 size_type find_first_of(const value_type* s, size_type pos = 0) const noexcept; 287 size_type find_first_of(value_type c, size_type pos = 0) const noexcept; 288 289 size_type find_last_of(const basic_string& str, size_type pos = npos) const noexcept; 290 template <class T> 291 size_type find_last_of(const T& t, size_type pos = npos) const noexcept noexcept; // C++17, noexcept as an extension 292 size_type find_last_of(const value_type* s, size_type pos, size_type n) const noexcept; 293 size_type find_last_of(const value_type* s, size_type pos = npos) const noexcept; 294 size_type find_last_of(value_type c, size_type pos = npos) const noexcept; 295 296 size_type find_first_not_of(const basic_string& str, size_type pos = 0) const noexcept; 297 template <class T> 298 size_type find_first_not_of(const T& t, size_type pos = 0) const noexcept; // C++17, noexcept as an extension 299 size_type find_first_not_of(const value_type* s, size_type pos, size_type n) const noexcept; 300 size_type find_first_not_of(const value_type* s, size_type pos = 0) const noexcept; 301 size_type find_first_not_of(value_type c, size_type pos = 0) const noexcept; 302 303 size_type find_last_not_of(const basic_string& str, size_type pos = npos) const noexcept; 304 template <class T> 305 size_type find_last_not_of(const T& t, size_type pos = npos) const noexcept; // C++17, noexcept as an extension 306 size_type find_last_not_of(const value_type* s, size_type pos, size_type n) const noexcept; 307 size_type find_last_not_of(const value_type* s, size_type pos = npos) const noexcept; 308 size_type find_last_not_of(value_type c, size_type pos = npos) const noexcept; 309 310 int compare(const basic_string& str) const noexcept; 311 template <class T> 312 int compare(const T& t) const noexcept; // C++17, noexcept as an extension 313 int compare(size_type pos1, size_type n1, const basic_string& str) const; 314 template <class T> 315 int compare(size_type pos1, size_type n1, const T& t) const; // C++17 316 int compare(size_type pos1, size_type n1, const basic_string& str, 317 size_type pos2, size_type n2=npos) const; // C++14 318 template <class T> 319 int compare(size_type pos1, size_type n1, const T& t, 320 size_type pos2, size_type n2=npos) const; // C++17 321 int compare(const value_type* s) const noexcept; 322 int compare(size_type pos1, size_type n1, const value_type* s) const; 323 int compare(size_type pos1, size_type n1, const value_type* s, size_type n2) const; 324 325 bool starts_with(basic_string_view<charT, traits> sv) const noexcept; // C++20 326 bool starts_with(charT c) const noexcept; // C++20 327 bool starts_with(const charT* s) const; // C++20 328 bool ends_with(basic_string_view<charT, traits> sv) const noexcept; // C++20 329 bool ends_with(charT c) const noexcept; // C++20 330 bool ends_with(const charT* s) const; // C++20 331 332 constexpr bool contains(basic_string_view<charT, traits> sv) const noexcept; // C++2b 333 constexpr bool contains(charT c) const noexcept; // C++2b 334 constexpr bool contains(const charT* s) const; // C++2b 335 336 bool __invariants() const; 337}; 338 339template<class InputIterator, 340 class Allocator = allocator<typename iterator_traits<InputIterator>::value_type>> 341basic_string(InputIterator, InputIterator, Allocator = Allocator()) 342 -> basic_string<typename iterator_traits<InputIterator>::value_type, 343 char_traits<typename iterator_traits<InputIterator>::value_type>, 344 Allocator>; // C++17 345 346template<class charT, class traits, class Allocator> 347basic_string<charT, traits, Allocator> 348operator+(const basic_string<charT, traits, Allocator>& lhs, 349 const basic_string<charT, traits, Allocator>& rhs); 350 351template<class charT, class traits, class Allocator> 352basic_string<charT, traits, Allocator> 353operator+(const charT* lhs , const basic_string<charT,traits,Allocator>&rhs); 354 355template<class charT, class traits, class Allocator> 356basic_string<charT, traits, Allocator> 357operator+(charT lhs, const basic_string<charT,traits,Allocator>& rhs); 358 359template<class charT, class traits, class Allocator> 360basic_string<charT, traits, Allocator> 361operator+(const basic_string<charT, traits, Allocator>& lhs, const charT* rhs); 362 363template<class charT, class traits, class Allocator> 364basic_string<charT, traits, Allocator> 365operator+(const basic_string<charT, traits, Allocator>& lhs, charT rhs); 366 367template<class charT, class traits, class Allocator> 368bool operator==(const basic_string<charT, traits, Allocator>& lhs, 369 const basic_string<charT, traits, Allocator>& rhs) noexcept; 370 371template<class charT, class traits, class Allocator> 372bool operator==(const charT* lhs, const basic_string<charT, traits, Allocator>& rhs) noexcept; 373 374template<class charT, class traits, class Allocator> 375bool operator==(const basic_string<charT,traits,Allocator>& lhs, const charT* rhs) noexcept; 376 377template<class charT, class traits, class Allocator> 378bool operator!=(const basic_string<charT,traits,Allocator>& lhs, 379 const basic_string<charT, traits, Allocator>& rhs) noexcept; 380 381template<class charT, class traits, class Allocator> 382bool operator!=(const charT* lhs, const basic_string<charT, traits, Allocator>& rhs) noexcept; 383 384template<class charT, class traits, class Allocator> 385bool operator!=(const basic_string<charT, traits, Allocator>& lhs, const charT* rhs) noexcept; 386 387template<class charT, class traits, class Allocator> 388bool operator< (const basic_string<charT, traits, Allocator>& lhs, 389 const basic_string<charT, traits, Allocator>& rhs) noexcept; 390 391template<class charT, class traits, class Allocator> 392bool operator< (const basic_string<charT, traits, Allocator>& lhs, const charT* rhs) noexcept; 393 394template<class charT, class traits, class Allocator> 395bool operator< (const charT* lhs, const basic_string<charT, traits, Allocator>& rhs) noexcept; 396 397template<class charT, class traits, class Allocator> 398bool operator> (const basic_string<charT, traits, Allocator>& lhs, 399 const basic_string<charT, traits, Allocator>& rhs) noexcept; 400 401template<class charT, class traits, class Allocator> 402bool operator> (const basic_string<charT, traits, Allocator>& lhs, const charT* rhs) noexcept; 403 404template<class charT, class traits, class Allocator> 405bool operator> (const charT* lhs, const basic_string<charT, traits, Allocator>& rhs) noexcept; 406 407template<class charT, class traits, class Allocator> 408bool operator<=(const basic_string<charT, traits, Allocator>& lhs, 409 const basic_string<charT, traits, Allocator>& rhs) noexcept; 410 411template<class charT, class traits, class Allocator> 412bool operator<=(const basic_string<charT, traits, Allocator>& lhs, const charT* rhs) noexcept; 413 414template<class charT, class traits, class Allocator> 415bool operator<=(const charT* lhs, const basic_string<charT, traits, Allocator>& rhs) noexcept; 416 417template<class charT, class traits, class Allocator> 418bool operator>=(const basic_string<charT, traits, Allocator>& lhs, 419 const basic_string<charT, traits, Allocator>& rhs) noexcept; 420 421template<class charT, class traits, class Allocator> 422bool operator>=(const basic_string<charT, traits, Allocator>& lhs, const charT* rhs) noexcept; 423 424template<class charT, class traits, class Allocator> 425bool operator>=(const charT* lhs, const basic_string<charT, traits, Allocator>& rhs) noexcept; 426 427template<class charT, class traits, class Allocator> 428void swap(basic_string<charT, traits, Allocator>& lhs, 429 basic_string<charT, traits, Allocator>& rhs) 430 noexcept(noexcept(lhs.swap(rhs))); 431 432template<class charT, class traits, class Allocator> 433basic_istream<charT, traits>& 434operator>>(basic_istream<charT, traits>& is, basic_string<charT, traits, Allocator>& str); 435 436template<class charT, class traits, class Allocator> 437basic_ostream<charT, traits>& 438operator<<(basic_ostream<charT, traits>& os, const basic_string<charT, traits, Allocator>& str); 439 440template<class charT, class traits, class Allocator> 441basic_istream<charT, traits>& 442getline(basic_istream<charT, traits>& is, basic_string<charT, traits, Allocator>& str, 443 charT delim); 444 445template<class charT, class traits, class Allocator> 446basic_istream<charT, traits>& 447getline(basic_istream<charT, traits>& is, basic_string<charT, traits, Allocator>& str); 448 449template<class charT, class traits, class Allocator, class U> 450typename basic_string<charT, traits, Allocator>::size_type 451erase(basic_string<charT, traits, Allocator>& c, const U& value); // C++20 452template<class charT, class traits, class Allocator, class Predicate> 453typename basic_string<charT, traits, Allocator>::size_type 454erase_if(basic_string<charT, traits, Allocator>& c, Predicate pred); // C++20 455 456typedef basic_string<char> string; 457typedef basic_string<wchar_t> wstring; 458typedef basic_string<char8_t> u8string; // C++20 459typedef basic_string<char16_t> u16string; 460typedef basic_string<char32_t> u32string; 461 462int stoi (const string& str, size_t* idx = nullptr, int base = 10); 463long stol (const string& str, size_t* idx = nullptr, int base = 10); 464unsigned long stoul (const string& str, size_t* idx = nullptr, int base = 10); 465long long stoll (const string& str, size_t* idx = nullptr, int base = 10); 466unsigned long long stoull(const string& str, size_t* idx = nullptr, int base = 10); 467 468float stof (const string& str, size_t* idx = nullptr); 469double stod (const string& str, size_t* idx = nullptr); 470long double stold(const string& str, size_t* idx = nullptr); 471 472string to_string(int val); 473string to_string(unsigned val); 474string to_string(long val); 475string to_string(unsigned long val); 476string to_string(long long val); 477string to_string(unsigned long long val); 478string to_string(float val); 479string to_string(double val); 480string to_string(long double val); 481 482int stoi (const wstring& str, size_t* idx = nullptr, int base = 10); 483long stol (const wstring& str, size_t* idx = nullptr, int base = 10); 484unsigned long stoul (const wstring& str, size_t* idx = nullptr, int base = 10); 485long long stoll (const wstring& str, size_t* idx = nullptr, int base = 10); 486unsigned long long stoull(const wstring& str, size_t* idx = nullptr, int base = 10); 487 488float stof (const wstring& str, size_t* idx = nullptr); 489double stod (const wstring& str, size_t* idx = nullptr); 490long double stold(const wstring& str, size_t* idx = nullptr); 491 492wstring to_wstring(int val); 493wstring to_wstring(unsigned val); 494wstring to_wstring(long val); 495wstring to_wstring(unsigned long val); 496wstring to_wstring(long long val); 497wstring to_wstring(unsigned long long val); 498wstring to_wstring(float val); 499wstring to_wstring(double val); 500wstring to_wstring(long double val); 501 502template <> struct hash<string>; 503template <> struct hash<u8string>; // C++20 504template <> struct hash<u16string>; 505template <> struct hash<u32string>; 506template <> struct hash<wstring>; 507 508basic_string<char> operator "" s( const char *str, size_t len ); // C++14 509basic_string<wchar_t> operator "" s( const wchar_t *str, size_t len ); // C++14 510basic_string<char8_t> operator "" s( const char8_t *str, size_t len ); // C++20 511basic_string<char16_t> operator "" s( const char16_t *str, size_t len ); // C++14 512basic_string<char32_t> operator "" s( const char32_t *str, size_t len ); // C++14 513 514} // std 515 516*/ 517 518#include <__config> 519#include <__debug> 520#include <__functional_base> 521#include <__iterator/wrap_iter.h> 522#include <algorithm> 523#include <compare> 524#include <cstdio> // EOF 525#include <cstdlib> 526#include <cstring> 527#include <initializer_list> 528#include <iosfwd> 529#include <iterator> 530#include <memory> 531#include <stdexcept> 532#include <string_view> 533#include <type_traits> 534#include <utility> 535#include <version> 536 537#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 538# include <cwchar> 539#endif 540 541#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS 542# include <cstdint> 543#endif 544 545#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 546#pragma GCC system_header 547#endif 548 549_LIBCPP_PUSH_MACROS 550#include <__undef_macros> 551 552 553_LIBCPP_BEGIN_NAMESPACE_STD 554 555// fpos 556 557template <class _StateT> 558class _LIBCPP_TEMPLATE_VIS fpos 559{ 560private: 561 _StateT __st_; 562 streamoff __off_; 563public: 564 _LIBCPP_INLINE_VISIBILITY fpos(streamoff __off = streamoff()) : __st_(), __off_(__off) {} 565 566 _LIBCPP_INLINE_VISIBILITY operator streamoff() const {return __off_;} 567 568 _LIBCPP_INLINE_VISIBILITY _StateT state() const {return __st_;} 569 _LIBCPP_INLINE_VISIBILITY void state(_StateT __st) {__st_ = __st;} 570 571 _LIBCPP_INLINE_VISIBILITY fpos& operator+=(streamoff __off) {__off_ += __off; return *this;} 572 _LIBCPP_INLINE_VISIBILITY fpos operator+ (streamoff __off) const {fpos __t(*this); __t += __off; return __t;} 573 _LIBCPP_INLINE_VISIBILITY fpos& operator-=(streamoff __off) {__off_ -= __off; return *this;} 574 _LIBCPP_INLINE_VISIBILITY fpos operator- (streamoff __off) const {fpos __t(*this); __t -= __off; return __t;} 575}; 576 577template <class _StateT> 578inline _LIBCPP_INLINE_VISIBILITY 579streamoff operator-(const fpos<_StateT>& __x, const fpos<_StateT>& __y) 580 {return streamoff(__x) - streamoff(__y);} 581 582template <class _StateT> 583inline _LIBCPP_INLINE_VISIBILITY 584bool operator==(const fpos<_StateT>& __x, const fpos<_StateT>& __y) 585 {return streamoff(__x) == streamoff(__y);} 586 587template <class _StateT> 588inline _LIBCPP_INLINE_VISIBILITY 589bool operator!=(const fpos<_StateT>& __x, const fpos<_StateT>& __y) 590 {return streamoff(__x) != streamoff(__y);} 591 592// basic_string 593 594template<class _CharT, class _Traits, class _Allocator> 595basic_string<_CharT, _Traits, _Allocator> 596operator+(const basic_string<_CharT, _Traits, _Allocator>& __x, 597 const basic_string<_CharT, _Traits, _Allocator>& __y); 598 599template<class _CharT, class _Traits, class _Allocator> 600basic_string<_CharT, _Traits, _Allocator> 601operator+(const _CharT* __x, const basic_string<_CharT,_Traits,_Allocator>& __y); 602 603template<class _CharT, class _Traits, class _Allocator> 604basic_string<_CharT, _Traits, _Allocator> 605operator+(_CharT __x, const basic_string<_CharT,_Traits,_Allocator>& __y); 606 607template<class _CharT, class _Traits, class _Allocator> 608inline _LIBCPP_INLINE_VISIBILITY 609basic_string<_CharT, _Traits, _Allocator> 610operator+(const basic_string<_CharT, _Traits, _Allocator>& __x, const _CharT* __y); 611 612template<class _CharT, class _Traits, class _Allocator> 613basic_string<_CharT, _Traits, _Allocator> 614operator+(const basic_string<_CharT, _Traits, _Allocator>& __x, _CharT __y); 615 616_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS string operator+<char, char_traits<char>, allocator<char> >(char const*, string const&)) 617 618template <bool> 619struct __basic_string_common; 620 621template <> 622struct __basic_string_common<true> { 623 // Both are defined in string.cpp 624 _LIBCPP_NORETURN _LIBCPP_EXPORTED_FROM_ABI void __throw_length_error() const; 625 _LIBCPP_NORETURN _LIBCPP_EXPORTED_FROM_ABI void __throw_out_of_range() const; 626}; 627 628template <class _Iter> 629struct __string_is_trivial_iterator : public false_type {}; 630 631template <class _Tp> 632struct __string_is_trivial_iterator<_Tp*> 633 : public is_arithmetic<_Tp> {}; 634 635template <class _Iter> 636struct __string_is_trivial_iterator<__wrap_iter<_Iter> > 637 : public __string_is_trivial_iterator<_Iter> {}; 638 639template <class _CharT, class _Traits, class _Tp> 640struct __can_be_converted_to_string_view : public _BoolConstant< 641 is_convertible<const _Tp&, basic_string_view<_CharT, _Traits> >::value && 642 !is_convertible<const _Tp&, const _CharT*>::value 643 > {}; 644 645#ifdef _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT 646 647template <class _CharT, size_t = sizeof(_CharT)> 648struct __padding 649{ 650 unsigned char __xx[sizeof(_CharT)-1]; 651}; 652 653template <class _CharT> 654struct __padding<_CharT, 1> 655{ 656}; 657 658#endif // _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT 659 660#ifndef _LIBCPP_HAS_NO_CHAR8_T 661typedef basic_string<char8_t> u8string; 662#endif 663 664#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS 665typedef basic_string<char16_t> u16string; 666typedef basic_string<char32_t> u32string; 667#endif 668 669template<class _CharT, class _Traits, class _Allocator> 670class 671 _LIBCPP_TEMPLATE_VIS 672#ifndef _LIBCPP_HAS_NO_CHAR8_T 673 _LIBCPP_PREFERRED_NAME(u8string) 674#endif 675#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS 676 _LIBCPP_PREFERRED_NAME(u16string) 677 _LIBCPP_PREFERRED_NAME(u32string) 678#endif 679 basic_string 680 : private __basic_string_common<true> // This base class is historical, but it needs to remain for ABI compatibility 681{ 682public: 683 typedef basic_string __self; 684 typedef basic_string_view<_CharT, _Traits> __self_view; 685 typedef _Traits traits_type; 686 typedef _CharT value_type; 687 typedef _Allocator allocator_type; 688 typedef allocator_traits<allocator_type> __alloc_traits; 689 typedef typename __alloc_traits::size_type size_type; 690 typedef typename __alloc_traits::difference_type difference_type; 691 typedef value_type& reference; 692 typedef const value_type& const_reference; 693 typedef typename __alloc_traits::pointer pointer; 694 typedef typename __alloc_traits::const_pointer const_pointer; 695 696 static_assert((!is_array<value_type>::value), "Character type of basic_string must not be an array"); 697 static_assert(( is_standard_layout<value_type>::value), "Character type of basic_string must be standard-layout"); 698 static_assert(( is_trivial<value_type>::value), "Character type of basic_string must be trivial"); 699 static_assert(( is_same<_CharT, typename traits_type::char_type>::value), 700 "traits_type::char_type must be the same type as CharT"); 701 static_assert(( is_same<typename allocator_type::value_type, value_type>::value), 702 "Allocator::value_type must be same type as value_type"); 703 704 typedef __wrap_iter<pointer> iterator; 705 typedef __wrap_iter<const_pointer> const_iterator; 706 typedef _VSTD::reverse_iterator<iterator> reverse_iterator; 707 typedef _VSTD::reverse_iterator<const_iterator> const_reverse_iterator; 708 709private: 710 711#ifdef _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT 712 713 struct __long 714 { 715 pointer __data_; 716 size_type __size_; 717 size_type __cap_; 718 }; 719 720#ifdef _LIBCPP_BIG_ENDIAN 721 static const size_type __short_mask = 0x01; 722 static const size_type __long_mask = 0x1ul; 723#else // _LIBCPP_BIG_ENDIAN 724 static const size_type __short_mask = 0x80; 725 static const size_type __long_mask = ~(size_type(~0) >> 1); 726#endif // _LIBCPP_BIG_ENDIAN 727 728 enum {__min_cap = (sizeof(__long) - 1)/sizeof(value_type) > 2 ? 729 (sizeof(__long) - 1)/sizeof(value_type) : 2}; 730 731 struct __short 732 { 733 value_type __data_[__min_cap]; 734 struct 735 : __padding<value_type> 736 { 737 unsigned char __size_; 738 }; 739 }; 740 741#else 742 743 struct __long 744 { 745 size_type __cap_; 746 size_type __size_; 747 pointer __data_; 748 }; 749 750#ifdef _LIBCPP_BIG_ENDIAN 751 static const size_type __short_mask = 0x80; 752 static const size_type __long_mask = ~(size_type(~0) >> 1); 753#else // _LIBCPP_BIG_ENDIAN 754 static const size_type __short_mask = 0x01; 755 static const size_type __long_mask = 0x1ul; 756#endif // _LIBCPP_BIG_ENDIAN 757 758 enum {__min_cap = (sizeof(__long) - 1)/sizeof(value_type) > 2 ? 759 (sizeof(__long) - 1)/sizeof(value_type) : 2}; 760 761 struct __short 762 { 763 union 764 { 765 unsigned char __size_; 766 value_type __lx; 767 }; 768 value_type __data_[__min_cap]; 769 }; 770 771#endif // _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT 772 773 union __ulx{__long __lx; __short __lxx;}; 774 775 enum {__n_words = sizeof(__ulx) / sizeof(size_type)}; 776 777 struct __raw 778 { 779 size_type __words[__n_words]; 780 }; 781 782 struct __rep 783 { 784 union 785 { 786 __long __l; 787 __short __s; 788 __raw __r; 789 }; 790 }; 791 792 __compressed_pair<__rep, allocator_type> __r_; 793 794public: 795 _LIBCPP_TEMPLATE_DATA_VIS 796 static const size_type npos = -1; 797 798 _LIBCPP_INLINE_VISIBILITY basic_string() 799 _NOEXCEPT_(is_nothrow_default_constructible<allocator_type>::value); 800 801 _LIBCPP_INLINE_VISIBILITY explicit basic_string(const allocator_type& __a) 802#if _LIBCPP_STD_VER <= 14 803 _NOEXCEPT_(is_nothrow_copy_constructible<allocator_type>::value); 804#else 805 _NOEXCEPT; 806#endif 807 808 basic_string(const basic_string& __str); 809 basic_string(const basic_string& __str, const allocator_type& __a); 810 811#ifndef _LIBCPP_CXX03_LANG 812 _LIBCPP_INLINE_VISIBILITY 813 basic_string(basic_string&& __str) 814#if _LIBCPP_STD_VER <= 14 815 _NOEXCEPT_(is_nothrow_move_constructible<allocator_type>::value); 816#else 817 _NOEXCEPT; 818#endif 819 820 _LIBCPP_INLINE_VISIBILITY 821 basic_string(basic_string&& __str, const allocator_type& __a); 822#endif // _LIBCPP_CXX03_LANG 823 824 template <class = __enable_if_t<__is_allocator<_Allocator>::value, nullptr_t> > 825 _LIBCPP_INLINE_VISIBILITY 826 basic_string(const _CharT* __s) : __r_(__default_init_tag(), __default_init_tag()) { 827 _LIBCPP_ASSERT(__s != nullptr, "basic_string(const char*) detected nullptr"); 828 __init(__s, traits_type::length(__s)); 829# if _LIBCPP_DEBUG_LEVEL == 2 830 __get_db()->__insert_c(this); 831# endif 832 } 833 834 template <class = __enable_if_t<__is_allocator<_Allocator>::value, nullptr_t> > 835 _LIBCPP_INLINE_VISIBILITY 836 basic_string(const _CharT* __s, const _Allocator& __a); 837 838#if _LIBCPP_STD_VER > 20 839 basic_string(nullptr_t) = delete; 840#endif 841 842 _LIBCPP_INLINE_VISIBILITY 843 basic_string(const _CharT* __s, size_type __n); 844 _LIBCPP_INLINE_VISIBILITY 845 basic_string(const _CharT* __s, size_type __n, const _Allocator& __a); 846 _LIBCPP_INLINE_VISIBILITY 847 basic_string(size_type __n, _CharT __c); 848 849 template <class = __enable_if_t<__is_allocator<_Allocator>::value, nullptr_t> > 850 _LIBCPP_INLINE_VISIBILITY 851 basic_string(size_type __n, _CharT __c, const _Allocator& __a); 852 853 basic_string(const basic_string& __str, size_type __pos, size_type __n, 854 const _Allocator& __a = _Allocator()); 855 _LIBCPP_INLINE_VISIBILITY 856 basic_string(const basic_string& __str, size_type __pos, 857 const _Allocator& __a = _Allocator()); 858 859 template<class _Tp, class = __enable_if_t<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value && !__is_same_uncvref<_Tp, basic_string>::value> > 860 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 861 basic_string(const _Tp& __t, size_type __pos, size_type __n, 862 const allocator_type& __a = allocator_type()); 863 864 template<class _Tp, class = __enable_if_t<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value && 865 !__is_same_uncvref<_Tp, basic_string>::value> > 866 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 867 explicit basic_string(const _Tp& __t); 868 869 template<class _Tp, class = __enable_if_t<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value && !__is_same_uncvref<_Tp, basic_string>::value> > 870 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 871 explicit basic_string(const _Tp& __t, const allocator_type& __a); 872 873 template<class _InputIterator, class = __enable_if_t<__is_cpp17_input_iterator<_InputIterator>::value> > 874 _LIBCPP_INLINE_VISIBILITY 875 basic_string(_InputIterator __first, _InputIterator __last); 876 template<class _InputIterator, class = __enable_if_t<__is_cpp17_input_iterator<_InputIterator>::value> > 877 _LIBCPP_INLINE_VISIBILITY 878 basic_string(_InputIterator __first, _InputIterator __last, const allocator_type& __a); 879#ifndef _LIBCPP_CXX03_LANG 880 _LIBCPP_INLINE_VISIBILITY 881 basic_string(initializer_list<_CharT> __il); 882 _LIBCPP_INLINE_VISIBILITY 883 basic_string(initializer_list<_CharT> __il, const _Allocator& __a); 884#endif // _LIBCPP_CXX03_LANG 885 886 inline ~basic_string(); 887 888 _LIBCPP_INLINE_VISIBILITY 889 operator __self_view() const _NOEXCEPT { return __self_view(data(), size()); } 890 891 basic_string& operator=(const basic_string& __str); 892 893 template <class _Tp, class = __enable_if_t<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value && !__is_same_uncvref<_Tp, basic_string>::value> > 894 basic_string& operator=(const _Tp& __t) 895 {__self_view __sv = __t; return assign(__sv);} 896 897#ifndef _LIBCPP_CXX03_LANG 898 _LIBCPP_INLINE_VISIBILITY 899 basic_string& operator=(basic_string&& __str) 900 _NOEXCEPT_((__noexcept_move_assign_container<_Allocator, __alloc_traits>::value)); 901 _LIBCPP_INLINE_VISIBILITY 902 basic_string& operator=(initializer_list<value_type> __il) {return assign(__il.begin(), __il.size());} 903#endif 904 _LIBCPP_INLINE_VISIBILITY basic_string& operator=(const value_type* __s) {return assign(__s);} 905#if _LIBCPP_STD_VER > 20 906 basic_string& operator=(nullptr_t) = delete; 907#endif 908 basic_string& operator=(value_type __c); 909 910#if _LIBCPP_DEBUG_LEVEL == 2 911 _LIBCPP_INLINE_VISIBILITY 912 iterator begin() _NOEXCEPT 913 {return iterator(this, __get_pointer());} 914 _LIBCPP_INLINE_VISIBILITY 915 const_iterator begin() const _NOEXCEPT 916 {return const_iterator(this, __get_pointer());} 917 _LIBCPP_INLINE_VISIBILITY 918 iterator end() _NOEXCEPT 919 {return iterator(this, __get_pointer() + size());} 920 _LIBCPP_INLINE_VISIBILITY 921 const_iterator end() const _NOEXCEPT 922 {return const_iterator(this, __get_pointer() + size());} 923#else 924 _LIBCPP_INLINE_VISIBILITY 925 iterator begin() _NOEXCEPT 926 {return iterator(__get_pointer());} 927 _LIBCPP_INLINE_VISIBILITY 928 const_iterator begin() const _NOEXCEPT 929 {return const_iterator(__get_pointer());} 930 _LIBCPP_INLINE_VISIBILITY 931 iterator end() _NOEXCEPT 932 {return iterator(__get_pointer() + size());} 933 _LIBCPP_INLINE_VISIBILITY 934 const_iterator end() const _NOEXCEPT 935 {return const_iterator(__get_pointer() + size());} 936#endif // _LIBCPP_DEBUG_LEVEL == 2 937 _LIBCPP_INLINE_VISIBILITY 938 reverse_iterator rbegin() _NOEXCEPT 939 {return reverse_iterator(end());} 940 _LIBCPP_INLINE_VISIBILITY 941 const_reverse_iterator rbegin() const _NOEXCEPT 942 {return const_reverse_iterator(end());} 943 _LIBCPP_INLINE_VISIBILITY 944 reverse_iterator rend() _NOEXCEPT 945 {return reverse_iterator(begin());} 946 _LIBCPP_INLINE_VISIBILITY 947 const_reverse_iterator rend() const _NOEXCEPT 948 {return const_reverse_iterator(begin());} 949 950 _LIBCPP_INLINE_VISIBILITY 951 const_iterator cbegin() const _NOEXCEPT 952 {return begin();} 953 _LIBCPP_INLINE_VISIBILITY 954 const_iterator cend() const _NOEXCEPT 955 {return end();} 956 _LIBCPP_INLINE_VISIBILITY 957 const_reverse_iterator crbegin() const _NOEXCEPT 958 {return rbegin();} 959 _LIBCPP_INLINE_VISIBILITY 960 const_reverse_iterator crend() const _NOEXCEPT 961 {return rend();} 962 963 _LIBCPP_INLINE_VISIBILITY size_type size() const _NOEXCEPT 964 {return __is_long() ? __get_long_size() : __get_short_size();} 965 _LIBCPP_INLINE_VISIBILITY size_type length() const _NOEXCEPT {return size();} 966 _LIBCPP_INLINE_VISIBILITY size_type max_size() const _NOEXCEPT; 967 _LIBCPP_INLINE_VISIBILITY size_type capacity() const _NOEXCEPT 968 {return (__is_long() ? __get_long_cap() 969 : static_cast<size_type>(__min_cap)) - 1;} 970 971 void resize(size_type __n, value_type __c); 972 _LIBCPP_INLINE_VISIBILITY void resize(size_type __n) {resize(__n, value_type());} 973 974 void reserve(size_type __requested_capacity); 975 _LIBCPP_INLINE_VISIBILITY void __resize_default_init(size_type __n); 976 977 _LIBCPP_DEPRECATED_IN_CXX20 _LIBCPP_INLINE_VISIBILITY 978 void reserve() _NOEXCEPT {shrink_to_fit();} 979 _LIBCPP_INLINE_VISIBILITY 980 void shrink_to_fit() _NOEXCEPT; 981 _LIBCPP_INLINE_VISIBILITY 982 void clear() _NOEXCEPT; 983 _LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY 984 bool empty() const _NOEXCEPT {return size() == 0;} 985 986 _LIBCPP_INLINE_VISIBILITY const_reference operator[](size_type __pos) const _NOEXCEPT; 987 _LIBCPP_INLINE_VISIBILITY reference operator[](size_type __pos) _NOEXCEPT; 988 989 const_reference at(size_type __n) const; 990 reference at(size_type __n); 991 992 _LIBCPP_INLINE_VISIBILITY basic_string& operator+=(const basic_string& __str) {return append(__str);} 993 994 template <class _Tp> 995 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 996 __enable_if_t 997 < 998 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value 999 && !__is_same_uncvref<_Tp, basic_string >::value, 1000 basic_string& 1001 > 1002 operator+=(const _Tp& __t) {__self_view __sv = __t; return append(__sv);} 1003 _LIBCPP_INLINE_VISIBILITY basic_string& operator+=(const value_type* __s) {return append(__s);} 1004 _LIBCPP_INLINE_VISIBILITY basic_string& operator+=(value_type __c) {push_back(__c); return *this;} 1005#ifndef _LIBCPP_CXX03_LANG 1006 _LIBCPP_INLINE_VISIBILITY basic_string& operator+=(initializer_list<value_type> __il) {return append(__il);} 1007#endif // _LIBCPP_CXX03_LANG 1008 1009 _LIBCPP_INLINE_VISIBILITY 1010 basic_string& append(const basic_string& __str); 1011 1012 template <class _Tp> 1013 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1014 __enable_if_t< 1015 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value 1016 && !__is_same_uncvref<_Tp, basic_string>::value, 1017 basic_string& 1018 > 1019 append(const _Tp& __t) { __self_view __sv = __t; return append(__sv.data(), __sv.size()); } 1020 basic_string& append(const basic_string& __str, size_type __pos, size_type __n=npos); 1021 1022 template <class _Tp> 1023 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1024 __enable_if_t 1025 < 1026 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value 1027 && !__is_same_uncvref<_Tp, basic_string>::value, 1028 basic_string& 1029 > 1030 append(const _Tp& __t, size_type __pos, size_type __n=npos); 1031 basic_string& append(const value_type* __s, size_type __n); 1032 basic_string& append(const value_type* __s); 1033 basic_string& append(size_type __n, value_type __c); 1034 1035 _LIBCPP_INLINE_VISIBILITY 1036 void __append_default_init(size_type __n); 1037 1038 template<class _InputIterator> 1039 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1040 __enable_if_t 1041 < 1042 __is_exactly_cpp17_input_iterator<_InputIterator>::value, 1043 basic_string& 1044 > 1045 _LIBCPP_INLINE_VISIBILITY 1046 append(_InputIterator __first, _InputIterator __last) { 1047 const basic_string __temp(__first, __last, __alloc()); 1048 append(__temp.data(), __temp.size()); 1049 return *this; 1050 } 1051 template<class _ForwardIterator> 1052 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1053 __enable_if_t 1054 < 1055 __is_cpp17_forward_iterator<_ForwardIterator>::value, 1056 basic_string& 1057 > 1058 _LIBCPP_INLINE_VISIBILITY 1059 append(_ForwardIterator __first, _ForwardIterator __last); 1060 1061#ifndef _LIBCPP_CXX03_LANG 1062 _LIBCPP_INLINE_VISIBILITY 1063 basic_string& append(initializer_list<value_type> __il) {return append(__il.begin(), __il.size());} 1064#endif // _LIBCPP_CXX03_LANG 1065 1066 void push_back(value_type __c); 1067 _LIBCPP_INLINE_VISIBILITY 1068 void pop_back(); 1069 _LIBCPP_INLINE_VISIBILITY reference front() _NOEXCEPT; 1070 _LIBCPP_INLINE_VISIBILITY const_reference front() const _NOEXCEPT; 1071 _LIBCPP_INLINE_VISIBILITY reference back() _NOEXCEPT; 1072 _LIBCPP_INLINE_VISIBILITY const_reference back() const _NOEXCEPT; 1073 1074 template <class _Tp> 1075 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1076 __enable_if_t 1077 < 1078 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1079 basic_string& 1080 > 1081 assign(const _Tp & __t) { __self_view __sv = __t; return assign(__sv.data(), __sv.size()); } 1082 _LIBCPP_INLINE_VISIBILITY 1083 basic_string& assign(const basic_string& __str) { return *this = __str; } 1084#ifndef _LIBCPP_CXX03_LANG 1085 _LIBCPP_INLINE_VISIBILITY 1086 basic_string& assign(basic_string&& __str) 1087 _NOEXCEPT_((__noexcept_move_assign_container<_Allocator, __alloc_traits>::value)) 1088 {*this = _VSTD::move(__str); return *this;} 1089#endif 1090 basic_string& assign(const basic_string& __str, size_type __pos, size_type __n=npos); 1091 template <class _Tp> 1092 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1093 __enable_if_t 1094 < 1095 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value 1096 && !__is_same_uncvref<_Tp, basic_string>::value, 1097 basic_string& 1098 > 1099 assign(const _Tp & __t, size_type __pos, size_type __n=npos); 1100 basic_string& assign(const value_type* __s, size_type __n); 1101 basic_string& assign(const value_type* __s); 1102 basic_string& assign(size_type __n, value_type __c); 1103 template<class _InputIterator> 1104 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1105 __enable_if_t 1106 < 1107 __is_exactly_cpp17_input_iterator<_InputIterator>::value, 1108 basic_string& 1109 > 1110 assign(_InputIterator __first, _InputIterator __last); 1111 template<class _ForwardIterator> 1112 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1113 __enable_if_t 1114 < 1115 __is_cpp17_forward_iterator<_ForwardIterator>::value, 1116 basic_string& 1117 > 1118 assign(_ForwardIterator __first, _ForwardIterator __last); 1119#ifndef _LIBCPP_CXX03_LANG 1120 _LIBCPP_INLINE_VISIBILITY 1121 basic_string& assign(initializer_list<value_type> __il) {return assign(__il.begin(), __il.size());} 1122#endif // _LIBCPP_CXX03_LANG 1123 1124 _LIBCPP_INLINE_VISIBILITY 1125 basic_string& insert(size_type __pos1, const basic_string& __str); 1126 1127 template <class _Tp> 1128 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1129 __enable_if_t 1130 < 1131 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1132 basic_string& 1133 > 1134 insert(size_type __pos1, const _Tp& __t) 1135 { __self_view __sv = __t; return insert(__pos1, __sv.data(), __sv.size()); } 1136 1137 template <class _Tp> 1138 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1139 __enable_if_t 1140 < 1141 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value && !__is_same_uncvref<_Tp, basic_string>::value, 1142 basic_string& 1143 > 1144 insert(size_type __pos1, const _Tp& __t, size_type __pos2, size_type __n=npos); 1145 basic_string& insert(size_type __pos1, const basic_string& __str, size_type __pos2, size_type __n=npos); 1146 basic_string& insert(size_type __pos, const value_type* __s, size_type __n); 1147 basic_string& insert(size_type __pos, const value_type* __s); 1148 basic_string& insert(size_type __pos, size_type __n, value_type __c); 1149 iterator insert(const_iterator __pos, value_type __c); 1150 _LIBCPP_INLINE_VISIBILITY 1151 iterator insert(const_iterator __pos, size_type __n, value_type __c); 1152 template<class _InputIterator> 1153 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1154 __enable_if_t 1155 < 1156 __is_exactly_cpp17_input_iterator<_InputIterator>::value, 1157 iterator 1158 > 1159 insert(const_iterator __pos, _InputIterator __first, _InputIterator __last); 1160 template<class _ForwardIterator> 1161 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1162 __enable_if_t 1163 < 1164 __is_cpp17_forward_iterator<_ForwardIterator>::value, 1165 iterator 1166 > 1167 insert(const_iterator __pos, _ForwardIterator __first, _ForwardIterator __last); 1168#ifndef _LIBCPP_CXX03_LANG 1169 _LIBCPP_INLINE_VISIBILITY 1170 iterator insert(const_iterator __pos, initializer_list<value_type> __il) 1171 {return insert(__pos, __il.begin(), __il.end());} 1172#endif // _LIBCPP_CXX03_LANG 1173 1174 basic_string& erase(size_type __pos = 0, size_type __n = npos); 1175 _LIBCPP_INLINE_VISIBILITY 1176 iterator erase(const_iterator __pos); 1177 _LIBCPP_INLINE_VISIBILITY 1178 iterator erase(const_iterator __first, const_iterator __last); 1179 1180 _LIBCPP_INLINE_VISIBILITY 1181 basic_string& replace(size_type __pos1, size_type __n1, const basic_string& __str); 1182 1183 template <class _Tp> 1184 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1185 __enable_if_t 1186 < 1187 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1188 basic_string& 1189 > 1190 replace(size_type __pos1, size_type __n1, const _Tp& __t) { __self_view __sv = __t; return replace(__pos1, __n1, __sv.data(), __sv.size()); } 1191 basic_string& replace(size_type __pos1, size_type __n1, const basic_string& __str, size_type __pos2, size_type __n2=npos); 1192 template <class _Tp> 1193 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1194 __enable_if_t 1195 < 1196 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value && !__is_same_uncvref<_Tp, basic_string>::value, 1197 basic_string& 1198 > 1199 replace(size_type __pos1, size_type __n1, const _Tp& __t, size_type __pos2, size_type __n2=npos); 1200 basic_string& replace(size_type __pos, size_type __n1, const value_type* __s, size_type __n2); 1201 basic_string& replace(size_type __pos, size_type __n1, const value_type* __s); 1202 basic_string& replace(size_type __pos, size_type __n1, size_type __n2, value_type __c); 1203 _LIBCPP_INLINE_VISIBILITY 1204 basic_string& replace(const_iterator __i1, const_iterator __i2, const basic_string& __str); 1205 1206 template <class _Tp> 1207 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1208 __enable_if_t 1209 < 1210 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1211 basic_string& 1212 > 1213 replace(const_iterator __i1, const_iterator __i2, const _Tp& __t) { __self_view __sv = __t; return replace(__i1 - begin(), __i2 - __i1, __sv); } 1214 1215 _LIBCPP_INLINE_VISIBILITY 1216 basic_string& replace(const_iterator __i1, const_iterator __i2, const value_type* __s, size_type __n); 1217 _LIBCPP_INLINE_VISIBILITY 1218 basic_string& replace(const_iterator __i1, const_iterator __i2, const value_type* __s); 1219 _LIBCPP_INLINE_VISIBILITY 1220 basic_string& replace(const_iterator __i1, const_iterator __i2, size_type __n, value_type __c); 1221 template<class _InputIterator> 1222 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1223 __enable_if_t 1224 < 1225 __is_cpp17_input_iterator<_InputIterator>::value, 1226 basic_string& 1227 > 1228 replace(const_iterator __i1, const_iterator __i2, _InputIterator __j1, _InputIterator __j2); 1229#ifndef _LIBCPP_CXX03_LANG 1230 _LIBCPP_INLINE_VISIBILITY 1231 basic_string& replace(const_iterator __i1, const_iterator __i2, initializer_list<value_type> __il) 1232 {return replace(__i1, __i2, __il.begin(), __il.end());} 1233#endif // _LIBCPP_CXX03_LANG 1234 1235 size_type copy(value_type* __s, size_type __n, size_type __pos = 0) const; 1236 _LIBCPP_INLINE_VISIBILITY 1237 basic_string substr(size_type __pos = 0, size_type __n = npos) const; 1238 1239 _LIBCPP_INLINE_VISIBILITY 1240 void swap(basic_string& __str) 1241#if _LIBCPP_STD_VER >= 14 1242 _NOEXCEPT; 1243#else 1244 _NOEXCEPT_(!__alloc_traits::propagate_on_container_swap::value || 1245 __is_nothrow_swappable<allocator_type>::value); 1246#endif 1247 1248 _LIBCPP_INLINE_VISIBILITY 1249 const value_type* c_str() const _NOEXCEPT {return data();} 1250 _LIBCPP_INLINE_VISIBILITY 1251 const value_type* data() const _NOEXCEPT {return _VSTD::__to_address(__get_pointer());} 1252#if _LIBCPP_STD_VER > 14 || defined(_LIBCPP_BUILDING_LIBRARY) 1253 _LIBCPP_INLINE_VISIBILITY 1254 value_type* data() _NOEXCEPT {return _VSTD::__to_address(__get_pointer());} 1255#endif 1256 1257 _LIBCPP_INLINE_VISIBILITY 1258 allocator_type get_allocator() const _NOEXCEPT {return __alloc();} 1259 1260 _LIBCPP_INLINE_VISIBILITY 1261 size_type find(const basic_string& __str, size_type __pos = 0) const _NOEXCEPT; 1262 1263 template <class _Tp> 1264 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1265 __enable_if_t 1266 < 1267 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1268 size_type 1269 > 1270 find(const _Tp& __t, size_type __pos = 0) const _NOEXCEPT; 1271 size_type find(const value_type* __s, size_type __pos, size_type __n) const _NOEXCEPT; 1272 _LIBCPP_INLINE_VISIBILITY 1273 size_type find(const value_type* __s, size_type __pos = 0) const _NOEXCEPT; 1274 size_type find(value_type __c, size_type __pos = 0) const _NOEXCEPT; 1275 1276 _LIBCPP_INLINE_VISIBILITY 1277 size_type rfind(const basic_string& __str, size_type __pos = npos) const _NOEXCEPT; 1278 1279 template <class _Tp> 1280 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1281 __enable_if_t 1282 < 1283 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1284 size_type 1285 > 1286 rfind(const _Tp& __t, size_type __pos = npos) const _NOEXCEPT; 1287 size_type rfind(const value_type* __s, size_type __pos, size_type __n) const _NOEXCEPT; 1288 _LIBCPP_INLINE_VISIBILITY 1289 size_type rfind(const value_type* __s, size_type __pos = npos) const _NOEXCEPT; 1290 size_type rfind(value_type __c, size_type __pos = npos) const _NOEXCEPT; 1291 1292 _LIBCPP_INLINE_VISIBILITY 1293 size_type find_first_of(const basic_string& __str, size_type __pos = 0) const _NOEXCEPT; 1294 1295 template <class _Tp> 1296 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1297 __enable_if_t 1298 < 1299 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1300 size_type 1301 > 1302 find_first_of(const _Tp& __t, size_type __pos = 0) const _NOEXCEPT; 1303 size_type find_first_of(const value_type* __s, size_type __pos, size_type __n) const _NOEXCEPT; 1304 _LIBCPP_INLINE_VISIBILITY 1305 size_type find_first_of(const value_type* __s, size_type __pos = 0) const _NOEXCEPT; 1306 _LIBCPP_INLINE_VISIBILITY 1307 size_type find_first_of(value_type __c, size_type __pos = 0) const _NOEXCEPT; 1308 1309 _LIBCPP_INLINE_VISIBILITY 1310 size_type find_last_of(const basic_string& __str, size_type __pos = npos) const _NOEXCEPT; 1311 1312 template <class _Tp> 1313 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1314 __enable_if_t 1315 < 1316 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1317 size_type 1318 > 1319 find_last_of(const _Tp& __t, size_type __pos = npos) const _NOEXCEPT; 1320 size_type find_last_of(const value_type* __s, size_type __pos, size_type __n) const _NOEXCEPT; 1321 _LIBCPP_INLINE_VISIBILITY 1322 size_type find_last_of(const value_type* __s, size_type __pos = npos) const _NOEXCEPT; 1323 _LIBCPP_INLINE_VISIBILITY 1324 size_type find_last_of(value_type __c, size_type __pos = npos) const _NOEXCEPT; 1325 1326 _LIBCPP_INLINE_VISIBILITY 1327 size_type find_first_not_of(const basic_string& __str, size_type __pos = 0) const _NOEXCEPT; 1328 1329 template <class _Tp> 1330 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1331 __enable_if_t 1332 < 1333 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1334 size_type 1335 > 1336 find_first_not_of(const _Tp &__t, size_type __pos = 0) const _NOEXCEPT; 1337 size_type find_first_not_of(const value_type* __s, size_type __pos, size_type __n) const _NOEXCEPT; 1338 _LIBCPP_INLINE_VISIBILITY 1339 size_type find_first_not_of(const value_type* __s, size_type __pos = 0) const _NOEXCEPT; 1340 _LIBCPP_INLINE_VISIBILITY 1341 size_type find_first_not_of(value_type __c, size_type __pos = 0) const _NOEXCEPT; 1342 1343 _LIBCPP_INLINE_VISIBILITY 1344 size_type find_last_not_of(const basic_string& __str, size_type __pos = npos) const _NOEXCEPT; 1345 1346 template <class _Tp> 1347 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1348 __enable_if_t 1349 < 1350 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1351 size_type 1352 > 1353 find_last_not_of(const _Tp& __t, size_type __pos = npos) const _NOEXCEPT; 1354 size_type find_last_not_of(const value_type* __s, size_type __pos, size_type __n) const _NOEXCEPT; 1355 _LIBCPP_INLINE_VISIBILITY 1356 size_type find_last_not_of(const value_type* __s, size_type __pos = npos) const _NOEXCEPT; 1357 _LIBCPP_INLINE_VISIBILITY 1358 size_type find_last_not_of(value_type __c, size_type __pos = npos) const _NOEXCEPT; 1359 1360 _LIBCPP_INLINE_VISIBILITY 1361 int compare(const basic_string& __str) const _NOEXCEPT; 1362 1363 template <class _Tp> 1364 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1365 __enable_if_t 1366 < 1367 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1368 int 1369 > 1370 compare(const _Tp &__t) const _NOEXCEPT; 1371 1372 template <class _Tp> 1373 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1374 __enable_if_t 1375 < 1376 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1377 int 1378 > 1379 compare(size_type __pos1, size_type __n1, const _Tp& __t) const; 1380 1381 _LIBCPP_INLINE_VISIBILITY 1382 int compare(size_type __pos1, size_type __n1, const basic_string& __str) const; 1383 int compare(size_type __pos1, size_type __n1, const basic_string& __str, size_type __pos2, size_type __n2=npos) const; 1384 1385 template <class _Tp> 1386 inline _LIBCPP_INLINE_VISIBILITY 1387 __enable_if_t 1388 < 1389 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value && !__is_same_uncvref<_Tp, basic_string>::value, 1390 int 1391 > 1392 compare(size_type __pos1, size_type __n1, const _Tp& __t, size_type __pos2, size_type __n2=npos) const; 1393 int compare(const value_type* __s) const _NOEXCEPT; 1394 int compare(size_type __pos1, size_type __n1, const value_type* __s) const; 1395 int compare(size_type __pos1, size_type __n1, const value_type* __s, size_type __n2) const; 1396 1397#if _LIBCPP_STD_VER > 17 1398 constexpr _LIBCPP_INLINE_VISIBILITY 1399 bool starts_with(__self_view __sv) const noexcept 1400 { return __self_view(data(), size()).starts_with(__sv); } 1401 1402 constexpr _LIBCPP_INLINE_VISIBILITY 1403 bool starts_with(value_type __c) const noexcept 1404 { return !empty() && _Traits::eq(front(), __c); } 1405 1406 constexpr _LIBCPP_INLINE_VISIBILITY 1407 bool starts_with(const value_type* __s) const noexcept 1408 { return starts_with(__self_view(__s)); } 1409 1410 constexpr _LIBCPP_INLINE_VISIBILITY 1411 bool ends_with(__self_view __sv) const noexcept 1412 { return __self_view(data(), size()).ends_with( __sv); } 1413 1414 constexpr _LIBCPP_INLINE_VISIBILITY 1415 bool ends_with(value_type __c) const noexcept 1416 { return !empty() && _Traits::eq(back(), __c); } 1417 1418 constexpr _LIBCPP_INLINE_VISIBILITY 1419 bool ends_with(const value_type* __s) const noexcept 1420 { return ends_with(__self_view(__s)); } 1421#endif 1422 1423#if _LIBCPP_STD_VER > 20 1424 constexpr _LIBCPP_INLINE_VISIBILITY 1425 bool contains(__self_view __sv) const noexcept 1426 { return __self_view(data(), size()).contains(__sv); } 1427 1428 constexpr _LIBCPP_INLINE_VISIBILITY 1429 bool contains(value_type __c) const noexcept 1430 { return __self_view(data(), size()).contains(__c); } 1431 1432 constexpr _LIBCPP_INLINE_VISIBILITY 1433 bool contains(const value_type* __s) const 1434 { return __self_view(data(), size()).contains(__s); } 1435#endif 1436 1437 _LIBCPP_INLINE_VISIBILITY bool __invariants() const; 1438 1439 _LIBCPP_INLINE_VISIBILITY void __clear_and_shrink() _NOEXCEPT; 1440 1441 _LIBCPP_INLINE_VISIBILITY void __shrink_or_extend(size_type __target_capacity); 1442 1443 _LIBCPP_INLINE_VISIBILITY 1444 bool __is_long() const _NOEXCEPT 1445 {return bool(__r_.first().__s.__size_ & __short_mask);} 1446 1447#if _LIBCPP_DEBUG_LEVEL == 2 1448 1449 bool __dereferenceable(const const_iterator* __i) const; 1450 bool __decrementable(const const_iterator* __i) const; 1451 bool __addable(const const_iterator* __i, ptrdiff_t __n) const; 1452 bool __subscriptable(const const_iterator* __i, ptrdiff_t __n) const; 1453 1454#endif // _LIBCPP_DEBUG_LEVEL == 2 1455 1456private: 1457 _LIBCPP_INLINE_VISIBILITY 1458 allocator_type& __alloc() _NOEXCEPT 1459 {return __r_.second();} 1460 _LIBCPP_INLINE_VISIBILITY 1461 const allocator_type& __alloc() const _NOEXCEPT 1462 {return __r_.second();} 1463 1464#ifdef _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT 1465 1466 _LIBCPP_INLINE_VISIBILITY 1467 void __set_short_size(size_type __s) _NOEXCEPT 1468# ifdef _LIBCPP_BIG_ENDIAN 1469 {__r_.first().__s.__size_ = (unsigned char)(__s << 1);} 1470# else 1471 {__r_.first().__s.__size_ = (unsigned char)(__s);} 1472# endif 1473 1474 _LIBCPP_INLINE_VISIBILITY 1475 size_type __get_short_size() const _NOEXCEPT 1476# ifdef _LIBCPP_BIG_ENDIAN 1477 {return __r_.first().__s.__size_ >> 1;} 1478# else 1479 {return __r_.first().__s.__size_;} 1480# endif 1481 1482#else // _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT 1483 1484 _LIBCPP_INLINE_VISIBILITY 1485 void __set_short_size(size_type __s) _NOEXCEPT 1486# ifdef _LIBCPP_BIG_ENDIAN 1487 {__r_.first().__s.__size_ = (unsigned char)(__s);} 1488# else 1489 {__r_.first().__s.__size_ = (unsigned char)(__s << 1);} 1490# endif 1491 1492 _LIBCPP_INLINE_VISIBILITY 1493 size_type __get_short_size() const _NOEXCEPT 1494# ifdef _LIBCPP_BIG_ENDIAN 1495 {return __r_.first().__s.__size_;} 1496# else 1497 {return __r_.first().__s.__size_ >> 1;} 1498# endif 1499 1500#endif // _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT 1501 1502 _LIBCPP_INLINE_VISIBILITY 1503 void __set_long_size(size_type __s) _NOEXCEPT 1504 {__r_.first().__l.__size_ = __s;} 1505 _LIBCPP_INLINE_VISIBILITY 1506 size_type __get_long_size() const _NOEXCEPT 1507 {return __r_.first().__l.__size_;} 1508 _LIBCPP_INLINE_VISIBILITY 1509 void __set_size(size_type __s) _NOEXCEPT 1510 {if (__is_long()) __set_long_size(__s); else __set_short_size(__s);} 1511 1512 _LIBCPP_INLINE_VISIBILITY 1513 void __set_long_cap(size_type __s) _NOEXCEPT 1514 {__r_.first().__l.__cap_ = __long_mask | __s;} 1515 _LIBCPP_INLINE_VISIBILITY 1516 size_type __get_long_cap() const _NOEXCEPT 1517 {return __r_.first().__l.__cap_ & size_type(~__long_mask);} 1518 1519 _LIBCPP_INLINE_VISIBILITY 1520 void __set_long_pointer(pointer __p) _NOEXCEPT 1521 {__r_.first().__l.__data_ = __p;} 1522 _LIBCPP_INLINE_VISIBILITY 1523 pointer __get_long_pointer() _NOEXCEPT 1524 {return __r_.first().__l.__data_;} 1525 _LIBCPP_INLINE_VISIBILITY 1526 const_pointer __get_long_pointer() const _NOEXCEPT 1527 {return __r_.first().__l.__data_;} 1528 _LIBCPP_INLINE_VISIBILITY 1529 pointer __get_short_pointer() _NOEXCEPT 1530 {return pointer_traits<pointer>::pointer_to(__r_.first().__s.__data_[0]);} 1531 _LIBCPP_INLINE_VISIBILITY 1532 const_pointer __get_short_pointer() const _NOEXCEPT 1533 {return pointer_traits<const_pointer>::pointer_to(__r_.first().__s.__data_[0]);} 1534 _LIBCPP_INLINE_VISIBILITY 1535 pointer __get_pointer() _NOEXCEPT 1536 {return __is_long() ? __get_long_pointer() : __get_short_pointer();} 1537 _LIBCPP_INLINE_VISIBILITY 1538 const_pointer __get_pointer() const _NOEXCEPT 1539 {return __is_long() ? __get_long_pointer() : __get_short_pointer();} 1540 1541 _LIBCPP_INLINE_VISIBILITY 1542 void __zero() _NOEXCEPT 1543 { 1544 size_type (&__a)[__n_words] = __r_.first().__r.__words; 1545 for (unsigned __i = 0; __i < __n_words; ++__i) 1546 __a[__i] = 0; 1547 } 1548 1549 template <size_type __a> static 1550 _LIBCPP_INLINE_VISIBILITY 1551 size_type __align_it(size_type __s) _NOEXCEPT 1552 {return (__s + (__a-1)) & ~(__a-1);} 1553 enum {__alignment = 16}; 1554 static _LIBCPP_INLINE_VISIBILITY 1555 size_type __recommend(size_type __s) _NOEXCEPT 1556 { 1557 if (__s < __min_cap) return static_cast<size_type>(__min_cap) - 1; 1558 size_type __guess = __align_it<sizeof(value_type) < __alignment ? 1559 __alignment/sizeof(value_type) : 1 > (__s+1) - 1; 1560 if (__guess == __min_cap) ++__guess; 1561 return __guess; 1562 } 1563 1564 inline 1565 void __init(const value_type* __s, size_type __sz, size_type __reserve); 1566 inline 1567 void __init(const value_type* __s, size_type __sz); 1568 inline 1569 void __init(size_type __n, value_type __c); 1570 1571 // Slow path for the (inlined) copy constructor for 'long' strings. 1572 // Always externally instantiated and not inlined. 1573 // Requires that __s is zero terminated. 1574 // The main reason for this function to exist is because for unstable, we 1575 // want to allow inlining of the copy constructor. However, we don't want 1576 // to call the __init() functions as those are marked as inline which may 1577 // result in over-aggressive inlining by the compiler, where our aim is 1578 // to only inline the fast path code directly in the ctor. 1579 void __init_copy_ctor_external(const value_type* __s, size_type __sz); 1580 1581 template <class _InputIterator> 1582 inline 1583 __enable_if_t 1584 < 1585 __is_exactly_cpp17_input_iterator<_InputIterator>::value 1586 > 1587 __init(_InputIterator __first, _InputIterator __last); 1588 1589 template <class _ForwardIterator> 1590 inline 1591 __enable_if_t 1592 < 1593 __is_cpp17_forward_iterator<_ForwardIterator>::value 1594 > 1595 __init(_ForwardIterator __first, _ForwardIterator __last); 1596 1597 void __grow_by(size_type __old_cap, size_type __delta_cap, size_type __old_sz, 1598 size_type __n_copy, size_type __n_del, size_type __n_add = 0); 1599 void __grow_by_and_replace(size_type __old_cap, size_type __delta_cap, size_type __old_sz, 1600 size_type __n_copy, size_type __n_del, 1601 size_type __n_add, const value_type* __p_new_stuff); 1602 1603 // __assign_no_alias is invoked for assignment operations where we 1604 // have proof that the input does not alias the current instance. 1605 // For example, operator=(basic_string) performs a 'self' check. 1606 template <bool __is_short> 1607 basic_string& __assign_no_alias(const value_type* __s, size_type __n); 1608 1609 _LIBCPP_INLINE_VISIBILITY 1610 void __erase_to_end(size_type __pos); 1611 1612 // __erase_external_with_move is invoked for erase() invocations where 1613 // `n ~= npos`, likely requiring memory moves on the string data. 1614 void __erase_external_with_move(size_type __pos, size_type __n); 1615 1616 _LIBCPP_INLINE_VISIBILITY 1617 void __copy_assign_alloc(const basic_string& __str) 1618 {__copy_assign_alloc(__str, integral_constant<bool, 1619 __alloc_traits::propagate_on_container_copy_assignment::value>());} 1620 1621 _LIBCPP_INLINE_VISIBILITY 1622 void __copy_assign_alloc(const basic_string& __str, true_type) 1623 { 1624 if (__alloc() == __str.__alloc()) 1625 __alloc() = __str.__alloc(); 1626 else 1627 { 1628 if (!__str.__is_long()) 1629 { 1630 __clear_and_shrink(); 1631 __alloc() = __str.__alloc(); 1632 } 1633 else 1634 { 1635 allocator_type __a = __str.__alloc(); 1636 pointer __p = __alloc_traits::allocate(__a, __str.__get_long_cap()); 1637 __clear_and_shrink(); 1638 __alloc() = _VSTD::move(__a); 1639 __set_long_pointer(__p); 1640 __set_long_cap(__str.__get_long_cap()); 1641 __set_long_size(__str.size()); 1642 } 1643 } 1644 } 1645 1646 _LIBCPP_INLINE_VISIBILITY 1647 void __copy_assign_alloc(const basic_string&, false_type) _NOEXCEPT 1648 {} 1649 1650#ifndef _LIBCPP_CXX03_LANG 1651 _LIBCPP_INLINE_VISIBILITY 1652 void __move_assign(basic_string& __str, false_type) 1653 _NOEXCEPT_(__alloc_traits::is_always_equal::value); 1654 _LIBCPP_INLINE_VISIBILITY 1655 void __move_assign(basic_string& __str, true_type) 1656#if _LIBCPP_STD_VER > 14 1657 _NOEXCEPT; 1658#else 1659 _NOEXCEPT_(is_nothrow_move_assignable<allocator_type>::value); 1660#endif 1661#endif 1662 1663 _LIBCPP_INLINE_VISIBILITY 1664 void 1665 __move_assign_alloc(basic_string& __str) 1666 _NOEXCEPT_( 1667 !__alloc_traits::propagate_on_container_move_assignment::value || 1668 is_nothrow_move_assignable<allocator_type>::value) 1669 {__move_assign_alloc(__str, integral_constant<bool, 1670 __alloc_traits::propagate_on_container_move_assignment::value>());} 1671 1672 _LIBCPP_INLINE_VISIBILITY 1673 void __move_assign_alloc(basic_string& __c, true_type) 1674 _NOEXCEPT_(is_nothrow_move_assignable<allocator_type>::value) 1675 { 1676 __alloc() = _VSTD::move(__c.__alloc()); 1677 } 1678 1679 _LIBCPP_INLINE_VISIBILITY 1680 void __move_assign_alloc(basic_string&, false_type) 1681 _NOEXCEPT 1682 {} 1683 1684 basic_string& __assign_external(const value_type* __s); 1685 basic_string& __assign_external(const value_type* __s, size_type __n); 1686 1687 // Assigns the value in __s, guaranteed to be __n < __min_cap in length. 1688 inline basic_string& __assign_short(const value_type* __s, size_type __n) { 1689 pointer __p = __is_long() 1690 ? (__set_long_size(__n), __get_long_pointer()) 1691 : (__set_short_size(__n), __get_short_pointer()); 1692 traits_type::move(_VSTD::__to_address(__p), __s, __n); 1693 traits_type::assign(__p[__n], value_type()); 1694 return *this; 1695 } 1696 1697 _LIBCPP_HIDE_FROM_ABI basic_string& __null_terminate_at(value_type* __p, size_type __newsz) { 1698 __set_size(__newsz); 1699 __invalidate_iterators_past(__newsz); 1700 traits_type::assign(__p[__newsz], value_type()); 1701 return *this; 1702 } 1703 1704 _LIBCPP_INLINE_VISIBILITY void __invalidate_all_iterators(); 1705 _LIBCPP_INLINE_VISIBILITY void __invalidate_iterators_past(size_type); 1706 1707 template<class _Tp> 1708 _LIBCPP_INLINE_VISIBILITY 1709 bool __addr_in_range(_Tp&& __t) const { 1710 const volatile void *__p = _VSTD::addressof(__t); 1711 return data() <= __p && __p <= data() + size(); 1712 } 1713 1714 _LIBCPP_NORETURN _LIBCPP_HIDE_FROM_ABI 1715 void __throw_length_error() const { 1716#ifndef _LIBCPP_NO_EXCEPTIONS 1717 __basic_string_common<true>::__throw_length_error(); 1718#else 1719 _VSTD::abort(); 1720#endif 1721 } 1722 1723 _LIBCPP_NORETURN _LIBCPP_HIDE_FROM_ABI 1724 void __throw_out_of_range() const { 1725#ifndef _LIBCPP_NO_EXCEPTIONS 1726 __basic_string_common<true>::__throw_out_of_range(); 1727#else 1728 _VSTD::abort(); 1729#endif 1730 } 1731 1732 friend basic_string operator+<>(const basic_string&, const basic_string&); 1733 friend basic_string operator+<>(const value_type*, const basic_string&); 1734 friend basic_string operator+<>(value_type, const basic_string&); 1735 friend basic_string operator+<>(const basic_string&, const value_type*); 1736 friend basic_string operator+<>(const basic_string&, value_type); 1737}; 1738 1739// These declarations must appear before any functions are implicitly used 1740// so that they have the correct visibility specifier. 1741#ifdef _LIBCPP_ABI_STRING_OPTIMIZED_EXTERNAL_INSTANTIATION 1742 _LIBCPP_STRING_UNSTABLE_EXTERN_TEMPLATE_LIST(_LIBCPP_EXTERN_TEMPLATE, char) 1743# ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 1744 _LIBCPP_STRING_UNSTABLE_EXTERN_TEMPLATE_LIST(_LIBCPP_EXTERN_TEMPLATE, wchar_t) 1745# endif 1746#else 1747 _LIBCPP_STRING_V1_EXTERN_TEMPLATE_LIST(_LIBCPP_EXTERN_TEMPLATE, char) 1748# ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 1749 _LIBCPP_STRING_V1_EXTERN_TEMPLATE_LIST(_LIBCPP_EXTERN_TEMPLATE, wchar_t) 1750# endif 1751#endif 1752 1753 1754#if _LIBCPP_STD_VER >= 17 1755template<class _InputIterator, 1756 class _CharT = __iter_value_type<_InputIterator>, 1757 class _Allocator = allocator<_CharT>, 1758 class = enable_if_t<__is_cpp17_input_iterator<_InputIterator>::value>, 1759 class = enable_if_t<__is_allocator<_Allocator>::value> 1760 > 1761basic_string(_InputIterator, _InputIterator, _Allocator = _Allocator()) 1762 -> basic_string<_CharT, char_traits<_CharT>, _Allocator>; 1763 1764template<class _CharT, 1765 class _Traits, 1766 class _Allocator = allocator<_CharT>, 1767 class = enable_if_t<__is_allocator<_Allocator>::value> 1768 > 1769explicit basic_string(basic_string_view<_CharT, _Traits>, const _Allocator& = _Allocator()) 1770 -> basic_string<_CharT, _Traits, _Allocator>; 1771 1772template<class _CharT, 1773 class _Traits, 1774 class _Allocator = allocator<_CharT>, 1775 class = enable_if_t<__is_allocator<_Allocator>::value>, 1776 class _Sz = typename allocator_traits<_Allocator>::size_type 1777 > 1778basic_string(basic_string_view<_CharT, _Traits>, _Sz, _Sz, const _Allocator& = _Allocator()) 1779 -> basic_string<_CharT, _Traits, _Allocator>; 1780#endif 1781 1782template <class _CharT, class _Traits, class _Allocator> 1783inline 1784void 1785basic_string<_CharT, _Traits, _Allocator>::__invalidate_all_iterators() 1786{ 1787#if _LIBCPP_DEBUG_LEVEL == 2 1788 __get_db()->__invalidate_all(this); 1789#endif 1790} 1791 1792template <class _CharT, class _Traits, class _Allocator> 1793inline 1794void 1795basic_string<_CharT, _Traits, _Allocator>::__invalidate_iterators_past(size_type __pos) 1796{ 1797#if _LIBCPP_DEBUG_LEVEL == 2 1798 __c_node* __c = __get_db()->__find_c_and_lock(this); 1799 if (__c) 1800 { 1801 const_pointer __new_last = __get_pointer() + __pos; 1802 for (__i_node** __p = __c->end_; __p != __c->beg_; ) 1803 { 1804 --__p; 1805 const_iterator* __i = static_cast<const_iterator*>((*__p)->__i_); 1806 if (__i->base() > __new_last) 1807 { 1808 (*__p)->__c_ = nullptr; 1809 if (--__c->end_ != __p) 1810 _VSTD::memmove(__p, __p+1, (__c->end_ - __p)*sizeof(__i_node*)); 1811 } 1812 } 1813 __get_db()->unlock(); 1814 } 1815#else 1816 (void)__pos; 1817#endif // _LIBCPP_DEBUG_LEVEL == 2 1818} 1819 1820template <class _CharT, class _Traits, class _Allocator> 1821inline 1822basic_string<_CharT, _Traits, _Allocator>::basic_string() 1823 _NOEXCEPT_(is_nothrow_default_constructible<allocator_type>::value) 1824 : __r_(__default_init_tag(), __default_init_tag()) 1825{ 1826#if _LIBCPP_DEBUG_LEVEL == 2 1827 __get_db()->__insert_c(this); 1828#endif 1829 __zero(); 1830} 1831 1832template <class _CharT, class _Traits, class _Allocator> 1833inline 1834basic_string<_CharT, _Traits, _Allocator>::basic_string(const allocator_type& __a) 1835#if _LIBCPP_STD_VER <= 14 1836 _NOEXCEPT_(is_nothrow_copy_constructible<allocator_type>::value) 1837#else 1838 _NOEXCEPT 1839#endif 1840: __r_(__default_init_tag(), __a) 1841{ 1842#if _LIBCPP_DEBUG_LEVEL == 2 1843 __get_db()->__insert_c(this); 1844#endif 1845 __zero(); 1846} 1847 1848template <class _CharT, class _Traits, class _Allocator> 1849void basic_string<_CharT, _Traits, _Allocator>::__init(const value_type* __s, 1850 size_type __sz, 1851 size_type __reserve) 1852{ 1853 if (__reserve > max_size()) 1854 this->__throw_length_error(); 1855 pointer __p; 1856 if (__reserve < __min_cap) 1857 { 1858 __set_short_size(__sz); 1859 __p = __get_short_pointer(); 1860 } 1861 else 1862 { 1863 size_type __cap = __recommend(__reserve); 1864 __p = __alloc_traits::allocate(__alloc(), __cap+1); 1865 __set_long_pointer(__p); 1866 __set_long_cap(__cap+1); 1867 __set_long_size(__sz); 1868 } 1869 traits_type::copy(_VSTD::__to_address(__p), __s, __sz); 1870 traits_type::assign(__p[__sz], value_type()); 1871} 1872 1873template <class _CharT, class _Traits, class _Allocator> 1874void 1875basic_string<_CharT, _Traits, _Allocator>::__init(const value_type* __s, size_type __sz) 1876{ 1877 if (__sz > max_size()) 1878 this->__throw_length_error(); 1879 pointer __p; 1880 if (__sz < __min_cap) 1881 { 1882 __set_short_size(__sz); 1883 __p = __get_short_pointer(); 1884 } 1885 else 1886 { 1887 size_type __cap = __recommend(__sz); 1888 __p = __alloc_traits::allocate(__alloc(), __cap+1); 1889 __set_long_pointer(__p); 1890 __set_long_cap(__cap+1); 1891 __set_long_size(__sz); 1892 } 1893 traits_type::copy(_VSTD::__to_address(__p), __s, __sz); 1894 traits_type::assign(__p[__sz], value_type()); 1895} 1896 1897template <class _CharT, class _Traits, class _Allocator> 1898template <class> 1899basic_string<_CharT, _Traits, _Allocator>::basic_string(const _CharT* __s, const _Allocator& __a) 1900 : __r_(__default_init_tag(), __a) 1901{ 1902 _LIBCPP_ASSERT(__s != nullptr, "basic_string(const char*, allocator) detected nullptr"); 1903 __init(__s, traits_type::length(__s)); 1904#if _LIBCPP_DEBUG_LEVEL == 2 1905 __get_db()->__insert_c(this); 1906#endif 1907} 1908 1909template <class _CharT, class _Traits, class _Allocator> 1910inline 1911basic_string<_CharT, _Traits, _Allocator>::basic_string(const _CharT* __s, size_type __n) 1912 : __r_(__default_init_tag(), __default_init_tag()) 1913{ 1914 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "basic_string(const char*, n) detected nullptr"); 1915 __init(__s, __n); 1916#if _LIBCPP_DEBUG_LEVEL == 2 1917 __get_db()->__insert_c(this); 1918#endif 1919} 1920 1921template <class _CharT, class _Traits, class _Allocator> 1922inline 1923basic_string<_CharT, _Traits, _Allocator>::basic_string(const _CharT* __s, size_type __n, const _Allocator& __a) 1924 : __r_(__default_init_tag(), __a) 1925{ 1926 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "basic_string(const char*, n, allocator) detected nullptr"); 1927 __init(__s, __n); 1928#if _LIBCPP_DEBUG_LEVEL == 2 1929 __get_db()->__insert_c(this); 1930#endif 1931} 1932 1933template <class _CharT, class _Traits, class _Allocator> 1934basic_string<_CharT, _Traits, _Allocator>::basic_string(const basic_string& __str) 1935 : __r_(__default_init_tag(), __alloc_traits::select_on_container_copy_construction(__str.__alloc())) 1936{ 1937 if (!__str.__is_long()) 1938 __r_.first().__r = __str.__r_.first().__r; 1939 else 1940 __init_copy_ctor_external(_VSTD::__to_address(__str.__get_long_pointer()), 1941 __str.__get_long_size()); 1942 1943#if _LIBCPP_DEBUG_LEVEL == 2 1944 __get_db()->__insert_c(this); 1945#endif 1946} 1947 1948template <class _CharT, class _Traits, class _Allocator> 1949basic_string<_CharT, _Traits, _Allocator>::basic_string( 1950 const basic_string& __str, const allocator_type& __a) 1951 : __r_(__default_init_tag(), __a) 1952{ 1953 if (!__str.__is_long()) 1954 __r_.first().__r = __str.__r_.first().__r; 1955 else 1956 __init_copy_ctor_external(_VSTD::__to_address(__str.__get_long_pointer()), 1957 __str.__get_long_size()); 1958#if _LIBCPP_DEBUG_LEVEL == 2 1959 __get_db()->__insert_c(this); 1960#endif 1961} 1962 1963template <class _CharT, class _Traits, class _Allocator> 1964void basic_string<_CharT, _Traits, _Allocator>::__init_copy_ctor_external( 1965 const value_type* __s, size_type __sz) { 1966 pointer __p; 1967 if (__sz < __min_cap) { 1968 __p = __get_short_pointer(); 1969 __set_short_size(__sz); 1970 } else { 1971 if (__sz > max_size()) 1972 this->__throw_length_error(); 1973 size_t __cap = __recommend(__sz); 1974 __p = __alloc_traits::allocate(__alloc(), __cap + 1); 1975 __set_long_pointer(__p); 1976 __set_long_cap(__cap + 1); 1977 __set_long_size(__sz); 1978 } 1979 traits_type::copy(_VSTD::__to_address(__p), __s, __sz + 1); 1980} 1981 1982#ifndef _LIBCPP_CXX03_LANG 1983 1984template <class _CharT, class _Traits, class _Allocator> 1985inline 1986basic_string<_CharT, _Traits, _Allocator>::basic_string(basic_string&& __str) 1987#if _LIBCPP_STD_VER <= 14 1988 _NOEXCEPT_(is_nothrow_move_constructible<allocator_type>::value) 1989#else 1990 _NOEXCEPT 1991#endif 1992 : __r_(_VSTD::move(__str.__r_)) 1993{ 1994 __str.__zero(); 1995#if _LIBCPP_DEBUG_LEVEL == 2 1996 __get_db()->__insert_c(this); 1997 if (__is_long()) 1998 __get_db()->swap(this, &__str); 1999#endif 2000} 2001 2002template <class _CharT, class _Traits, class _Allocator> 2003inline 2004basic_string<_CharT, _Traits, _Allocator>::basic_string(basic_string&& __str, const allocator_type& __a) 2005 : __r_(__default_init_tag(), __a) 2006{ 2007 if (__str.__is_long() && __a != __str.__alloc()) // copy, not move 2008 __init(_VSTD::__to_address(__str.__get_long_pointer()), __str.__get_long_size()); 2009 else 2010 { 2011 __r_.first().__r = __str.__r_.first().__r; 2012 __str.__zero(); 2013 } 2014#if _LIBCPP_DEBUG_LEVEL == 2 2015 __get_db()->__insert_c(this); 2016 if (__is_long()) 2017 __get_db()->swap(this, &__str); 2018#endif 2019} 2020 2021#endif // _LIBCPP_CXX03_LANG 2022 2023template <class _CharT, class _Traits, class _Allocator> 2024void 2025basic_string<_CharT, _Traits, _Allocator>::__init(size_type __n, value_type __c) 2026{ 2027 if (__n > max_size()) 2028 this->__throw_length_error(); 2029 pointer __p; 2030 if (__n < __min_cap) 2031 { 2032 __set_short_size(__n); 2033 __p = __get_short_pointer(); 2034 } 2035 else 2036 { 2037 size_type __cap = __recommend(__n); 2038 __p = __alloc_traits::allocate(__alloc(), __cap+1); 2039 __set_long_pointer(__p); 2040 __set_long_cap(__cap+1); 2041 __set_long_size(__n); 2042 } 2043 traits_type::assign(_VSTD::__to_address(__p), __n, __c); 2044 traits_type::assign(__p[__n], value_type()); 2045} 2046 2047template <class _CharT, class _Traits, class _Allocator> 2048inline 2049basic_string<_CharT, _Traits, _Allocator>::basic_string(size_type __n, _CharT __c) 2050 : __r_(__default_init_tag(), __default_init_tag()) 2051{ 2052 __init(__n, __c); 2053#if _LIBCPP_DEBUG_LEVEL == 2 2054 __get_db()->__insert_c(this); 2055#endif 2056} 2057 2058template <class _CharT, class _Traits, class _Allocator> 2059template <class> 2060basic_string<_CharT, _Traits, _Allocator>::basic_string(size_type __n, _CharT __c, const _Allocator& __a) 2061 : __r_(__default_init_tag(), __a) 2062{ 2063 __init(__n, __c); 2064#if _LIBCPP_DEBUG_LEVEL == 2 2065 __get_db()->__insert_c(this); 2066#endif 2067} 2068 2069template <class _CharT, class _Traits, class _Allocator> 2070basic_string<_CharT, _Traits, _Allocator>::basic_string(const basic_string& __str, 2071 size_type __pos, size_type __n, 2072 const _Allocator& __a) 2073 : __r_(__default_init_tag(), __a) 2074{ 2075 size_type __str_sz = __str.size(); 2076 if (__pos > __str_sz) 2077 this->__throw_out_of_range(); 2078 __init(__str.data() + __pos, _VSTD::min(__n, __str_sz - __pos)); 2079#if _LIBCPP_DEBUG_LEVEL == 2 2080 __get_db()->__insert_c(this); 2081#endif 2082} 2083 2084template <class _CharT, class _Traits, class _Allocator> 2085inline 2086basic_string<_CharT, _Traits, _Allocator>::basic_string(const basic_string& __str, size_type __pos, 2087 const _Allocator& __a) 2088 : __r_(__default_init_tag(), __a) 2089{ 2090 size_type __str_sz = __str.size(); 2091 if (__pos > __str_sz) 2092 this->__throw_out_of_range(); 2093 __init(__str.data() + __pos, __str_sz - __pos); 2094#if _LIBCPP_DEBUG_LEVEL == 2 2095 __get_db()->__insert_c(this); 2096#endif 2097} 2098 2099template <class _CharT, class _Traits, class _Allocator> 2100template <class _Tp, class> 2101basic_string<_CharT, _Traits, _Allocator>::basic_string( 2102 const _Tp& __t, size_type __pos, size_type __n, const allocator_type& __a) 2103 : __r_(__default_init_tag(), __a) 2104{ 2105 __self_view __sv0 = __t; 2106 __self_view __sv = __sv0.substr(__pos, __n); 2107 __init(__sv.data(), __sv.size()); 2108#if _LIBCPP_DEBUG_LEVEL == 2 2109 __get_db()->__insert_c(this); 2110#endif 2111} 2112 2113template <class _CharT, class _Traits, class _Allocator> 2114template <class _Tp, class> 2115basic_string<_CharT, _Traits, _Allocator>::basic_string(const _Tp & __t) 2116 : __r_(__default_init_tag(), __default_init_tag()) 2117{ 2118 __self_view __sv = __t; 2119 __init(__sv.data(), __sv.size()); 2120#if _LIBCPP_DEBUG_LEVEL == 2 2121 __get_db()->__insert_c(this); 2122#endif 2123} 2124 2125template <class _CharT, class _Traits, class _Allocator> 2126template <class _Tp, class> 2127basic_string<_CharT, _Traits, _Allocator>::basic_string(const _Tp & __t, const _Allocator& __a) 2128 : __r_(__default_init_tag(), __a) 2129{ 2130 __self_view __sv = __t; 2131 __init(__sv.data(), __sv.size()); 2132#if _LIBCPP_DEBUG_LEVEL == 2 2133 __get_db()->__insert_c(this); 2134#endif 2135} 2136 2137template <class _CharT, class _Traits, class _Allocator> 2138template <class _InputIterator> 2139__enable_if_t 2140< 2141 __is_exactly_cpp17_input_iterator<_InputIterator>::value 2142> 2143basic_string<_CharT, _Traits, _Allocator>::__init(_InputIterator __first, _InputIterator __last) 2144{ 2145 __zero(); 2146#ifndef _LIBCPP_NO_EXCEPTIONS 2147 try 2148 { 2149#endif // _LIBCPP_NO_EXCEPTIONS 2150 for (; __first != __last; ++__first) 2151 push_back(*__first); 2152#ifndef _LIBCPP_NO_EXCEPTIONS 2153 } 2154 catch (...) 2155 { 2156 if (__is_long()) 2157 __alloc_traits::deallocate(__alloc(), __get_long_pointer(), __get_long_cap()); 2158 throw; 2159 } 2160#endif // _LIBCPP_NO_EXCEPTIONS 2161} 2162 2163template <class _CharT, class _Traits, class _Allocator> 2164template <class _ForwardIterator> 2165__enable_if_t 2166< 2167 __is_cpp17_forward_iterator<_ForwardIterator>::value 2168> 2169basic_string<_CharT, _Traits, _Allocator>::__init(_ForwardIterator __first, _ForwardIterator __last) 2170{ 2171 size_type __sz = static_cast<size_type>(_VSTD::distance(__first, __last)); 2172 if (__sz > max_size()) 2173 this->__throw_length_error(); 2174 pointer __p; 2175 if (__sz < __min_cap) 2176 { 2177 __set_short_size(__sz); 2178 __p = __get_short_pointer(); 2179 } 2180 else 2181 { 2182 size_type __cap = __recommend(__sz); 2183 __p = __alloc_traits::allocate(__alloc(), __cap+1); 2184 __set_long_pointer(__p); 2185 __set_long_cap(__cap+1); 2186 __set_long_size(__sz); 2187 } 2188 2189#ifndef _LIBCPP_NO_EXCEPTIONS 2190 try 2191 { 2192#endif // _LIBCPP_NO_EXCEPTIONS 2193 for (; __first != __last; ++__first, (void) ++__p) 2194 traits_type::assign(*__p, *__first); 2195 traits_type::assign(*__p, value_type()); 2196#ifndef _LIBCPP_NO_EXCEPTIONS 2197 } 2198 catch (...) 2199 { 2200 if (__is_long()) 2201 __alloc_traits::deallocate(__alloc(), __get_long_pointer(), __get_long_cap()); 2202 throw; 2203 } 2204#endif // _LIBCPP_NO_EXCEPTIONS 2205} 2206 2207template <class _CharT, class _Traits, class _Allocator> 2208template<class _InputIterator, class> 2209inline 2210basic_string<_CharT, _Traits, _Allocator>::basic_string(_InputIterator __first, _InputIterator __last) 2211 : __r_(__default_init_tag(), __default_init_tag()) 2212{ 2213 __init(__first, __last); 2214#if _LIBCPP_DEBUG_LEVEL == 2 2215 __get_db()->__insert_c(this); 2216#endif 2217} 2218 2219template <class _CharT, class _Traits, class _Allocator> 2220template<class _InputIterator, class> 2221inline 2222basic_string<_CharT, _Traits, _Allocator>::basic_string(_InputIterator __first, _InputIterator __last, 2223 const allocator_type& __a) 2224 : __r_(__default_init_tag(), __a) 2225{ 2226 __init(__first, __last); 2227#if _LIBCPP_DEBUG_LEVEL == 2 2228 __get_db()->__insert_c(this); 2229#endif 2230} 2231 2232#ifndef _LIBCPP_CXX03_LANG 2233 2234template <class _CharT, class _Traits, class _Allocator> 2235inline 2236basic_string<_CharT, _Traits, _Allocator>::basic_string( 2237 initializer_list<_CharT> __il) 2238 : __r_(__default_init_tag(), __default_init_tag()) 2239{ 2240 __init(__il.begin(), __il.end()); 2241#if _LIBCPP_DEBUG_LEVEL == 2 2242 __get_db()->__insert_c(this); 2243#endif 2244} 2245 2246template <class _CharT, class _Traits, class _Allocator> 2247inline 2248 2249basic_string<_CharT, _Traits, _Allocator>::basic_string( 2250 initializer_list<_CharT> __il, const _Allocator& __a) 2251 : __r_(__default_init_tag(), __a) 2252{ 2253 __init(__il.begin(), __il.end()); 2254#if _LIBCPP_DEBUG_LEVEL == 2 2255 __get_db()->__insert_c(this); 2256#endif 2257} 2258 2259#endif // _LIBCPP_CXX03_LANG 2260 2261template <class _CharT, class _Traits, class _Allocator> 2262basic_string<_CharT, _Traits, _Allocator>::~basic_string() 2263{ 2264#if _LIBCPP_DEBUG_LEVEL == 2 2265 __get_db()->__erase_c(this); 2266#endif 2267 if (__is_long()) 2268 __alloc_traits::deallocate(__alloc(), __get_long_pointer(), __get_long_cap()); 2269} 2270 2271template <class _CharT, class _Traits, class _Allocator> 2272void 2273basic_string<_CharT, _Traits, _Allocator>::__grow_by_and_replace 2274 (size_type __old_cap, size_type __delta_cap, size_type __old_sz, 2275 size_type __n_copy, size_type __n_del, size_type __n_add, const value_type* __p_new_stuff) 2276{ 2277 size_type __ms = max_size(); 2278 if (__delta_cap > __ms - __old_cap - 1) 2279 this->__throw_length_error(); 2280 pointer __old_p = __get_pointer(); 2281 size_type __cap = __old_cap < __ms / 2 - __alignment ? 2282 __recommend(_VSTD::max(__old_cap + __delta_cap, 2 * __old_cap)) : 2283 __ms - 1; 2284 pointer __p = __alloc_traits::allocate(__alloc(), __cap+1); 2285 __invalidate_all_iterators(); 2286 if (__n_copy != 0) 2287 traits_type::copy(_VSTD::__to_address(__p), 2288 _VSTD::__to_address(__old_p), __n_copy); 2289 if (__n_add != 0) 2290 traits_type::copy(_VSTD::__to_address(__p) + __n_copy, __p_new_stuff, __n_add); 2291 size_type __sec_cp_sz = __old_sz - __n_del - __n_copy; 2292 if (__sec_cp_sz != 0) 2293 traits_type::copy(_VSTD::__to_address(__p) + __n_copy + __n_add, 2294 _VSTD::__to_address(__old_p) + __n_copy + __n_del, __sec_cp_sz); 2295 if (__old_cap+1 != __min_cap) 2296 __alloc_traits::deallocate(__alloc(), __old_p, __old_cap+1); 2297 __set_long_pointer(__p); 2298 __set_long_cap(__cap+1); 2299 __old_sz = __n_copy + __n_add + __sec_cp_sz; 2300 __set_long_size(__old_sz); 2301 traits_type::assign(__p[__old_sz], value_type()); 2302} 2303 2304template <class _CharT, class _Traits, class _Allocator> 2305void 2306basic_string<_CharT, _Traits, _Allocator>::__grow_by(size_type __old_cap, size_type __delta_cap, size_type __old_sz, 2307 size_type __n_copy, size_type __n_del, size_type __n_add) 2308{ 2309 size_type __ms = max_size(); 2310 if (__delta_cap > __ms - __old_cap) 2311 this->__throw_length_error(); 2312 pointer __old_p = __get_pointer(); 2313 size_type __cap = __old_cap < __ms / 2 - __alignment ? 2314 __recommend(_VSTD::max(__old_cap + __delta_cap, 2 * __old_cap)) : 2315 __ms - 1; 2316 pointer __p = __alloc_traits::allocate(__alloc(), __cap+1); 2317 __invalidate_all_iterators(); 2318 if (__n_copy != 0) 2319 traits_type::copy(_VSTD::__to_address(__p), 2320 _VSTD::__to_address(__old_p), __n_copy); 2321 size_type __sec_cp_sz = __old_sz - __n_del - __n_copy; 2322 if (__sec_cp_sz != 0) 2323 traits_type::copy(_VSTD::__to_address(__p) + __n_copy + __n_add, 2324 _VSTD::__to_address(__old_p) + __n_copy + __n_del, 2325 __sec_cp_sz); 2326 if (__old_cap+1 != __min_cap) 2327 __alloc_traits::deallocate(__alloc(), __old_p, __old_cap+1); 2328 __set_long_pointer(__p); 2329 __set_long_cap(__cap+1); 2330} 2331 2332// assign 2333 2334template <class _CharT, class _Traits, class _Allocator> 2335template <bool __is_short> 2336basic_string<_CharT, _Traits, _Allocator>& 2337basic_string<_CharT, _Traits, _Allocator>::__assign_no_alias( 2338 const value_type* __s, size_type __n) { 2339 size_type __cap = __is_short ? __min_cap : __get_long_cap(); 2340 if (__n < __cap) { 2341 pointer __p = __is_short ? __get_short_pointer() : __get_long_pointer(); 2342 __is_short ? __set_short_size(__n) : __set_long_size(__n); 2343 traits_type::copy(_VSTD::__to_address(__p), __s, __n); 2344 traits_type::assign(__p[__n], value_type()); 2345 __invalidate_iterators_past(__n); 2346 } else { 2347 size_type __sz = __is_short ? __get_short_size() : __get_long_size(); 2348 __grow_by_and_replace(__cap - 1, __n - __cap + 1, __sz, 0, __sz, __n, __s); 2349 } 2350 return *this; 2351} 2352 2353template <class _CharT, class _Traits, class _Allocator> 2354basic_string<_CharT, _Traits, _Allocator>& 2355basic_string<_CharT, _Traits, _Allocator>::__assign_external( 2356 const value_type* __s, size_type __n) { 2357 size_type __cap = capacity(); 2358 if (__cap >= __n) { 2359 value_type* __p = _VSTD::__to_address(__get_pointer()); 2360 traits_type::move(__p, __s, __n); 2361 return __null_terminate_at(__p, __n); 2362 } else { 2363 size_type __sz = size(); 2364 __grow_by_and_replace(__cap, __n - __cap, __sz, 0, __sz, __n, __s); 2365 return *this; 2366 } 2367} 2368 2369template <class _CharT, class _Traits, class _Allocator> 2370basic_string<_CharT, _Traits, _Allocator>& 2371basic_string<_CharT, _Traits, _Allocator>::assign(const value_type* __s, size_type __n) 2372{ 2373 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::assign received nullptr"); 2374 return (__builtin_constant_p(__n) && __n < __min_cap) 2375 ? __assign_short(__s, __n) 2376 : __assign_external(__s, __n); 2377} 2378 2379template <class _CharT, class _Traits, class _Allocator> 2380basic_string<_CharT, _Traits, _Allocator>& 2381basic_string<_CharT, _Traits, _Allocator>::assign(size_type __n, value_type __c) 2382{ 2383 size_type __cap = capacity(); 2384 if (__cap < __n) 2385 { 2386 size_type __sz = size(); 2387 __grow_by(__cap, __n - __cap, __sz, 0, __sz); 2388 } 2389 value_type* __p = _VSTD::__to_address(__get_pointer()); 2390 traits_type::assign(__p, __n, __c); 2391 return __null_terminate_at(__p, __n); 2392} 2393 2394template <class _CharT, class _Traits, class _Allocator> 2395basic_string<_CharT, _Traits, _Allocator>& 2396basic_string<_CharT, _Traits, _Allocator>::operator=(value_type __c) 2397{ 2398 pointer __p; 2399 if (__is_long()) 2400 { 2401 __p = __get_long_pointer(); 2402 __set_long_size(1); 2403 } 2404 else 2405 { 2406 __p = __get_short_pointer(); 2407 __set_short_size(1); 2408 } 2409 traits_type::assign(*__p, __c); 2410 traits_type::assign(*++__p, value_type()); 2411 __invalidate_iterators_past(1); 2412 return *this; 2413} 2414 2415template <class _CharT, class _Traits, class _Allocator> 2416basic_string<_CharT, _Traits, _Allocator>& 2417basic_string<_CharT, _Traits, _Allocator>::operator=(const basic_string& __str) 2418{ 2419 if (this != &__str) { 2420 __copy_assign_alloc(__str); 2421 if (!__is_long()) { 2422 if (!__str.__is_long()) { 2423 __r_.first().__r = __str.__r_.first().__r; 2424 } else { 2425 return __assign_no_alias<true>(__str.data(), __str.size()); 2426 } 2427 } else { 2428 return __assign_no_alias<false>(__str.data(), __str.size()); 2429 } 2430 } 2431 return *this; 2432} 2433 2434#ifndef _LIBCPP_CXX03_LANG 2435 2436template <class _CharT, class _Traits, class _Allocator> 2437inline 2438void 2439basic_string<_CharT, _Traits, _Allocator>::__move_assign(basic_string& __str, false_type) 2440 _NOEXCEPT_(__alloc_traits::is_always_equal::value) 2441{ 2442 if (__alloc() != __str.__alloc()) 2443 assign(__str); 2444 else 2445 __move_assign(__str, true_type()); 2446} 2447 2448template <class _CharT, class _Traits, class _Allocator> 2449inline 2450void 2451basic_string<_CharT, _Traits, _Allocator>::__move_assign(basic_string& __str, true_type) 2452#if _LIBCPP_STD_VER > 14 2453 _NOEXCEPT 2454#else 2455 _NOEXCEPT_(is_nothrow_move_assignable<allocator_type>::value) 2456#endif 2457{ 2458 if (__is_long()) { 2459 __alloc_traits::deallocate(__alloc(), __get_long_pointer(), 2460 __get_long_cap()); 2461#if _LIBCPP_STD_VER <= 14 2462 if (!is_nothrow_move_assignable<allocator_type>::value) { 2463 __set_short_size(0); 2464 traits_type::assign(__get_short_pointer()[0], value_type()); 2465 } 2466#endif 2467 } 2468 __move_assign_alloc(__str); 2469 __r_.first() = __str.__r_.first(); 2470 __str.__set_short_size(0); 2471 traits_type::assign(__str.__get_short_pointer()[0], value_type()); 2472} 2473 2474template <class _CharT, class _Traits, class _Allocator> 2475inline 2476basic_string<_CharT, _Traits, _Allocator>& 2477basic_string<_CharT, _Traits, _Allocator>::operator=(basic_string&& __str) 2478 _NOEXCEPT_((__noexcept_move_assign_container<_Allocator, __alloc_traits>::value)) 2479{ 2480 __move_assign(__str, integral_constant<bool, 2481 __alloc_traits::propagate_on_container_move_assignment::value>()); 2482 return *this; 2483} 2484 2485#endif 2486 2487template <class _CharT, class _Traits, class _Allocator> 2488template<class _InputIterator> 2489__enable_if_t 2490< 2491 __is_exactly_cpp17_input_iterator<_InputIterator>::value, 2492 basic_string<_CharT, _Traits, _Allocator>& 2493> 2494basic_string<_CharT, _Traits, _Allocator>::assign(_InputIterator __first, _InputIterator __last) 2495{ 2496 const basic_string __temp(__first, __last, __alloc()); 2497 assign(__temp.data(), __temp.size()); 2498 return *this; 2499} 2500 2501template <class _CharT, class _Traits, class _Allocator> 2502template<class _ForwardIterator> 2503__enable_if_t 2504< 2505 __is_cpp17_forward_iterator<_ForwardIterator>::value, 2506 basic_string<_CharT, _Traits, _Allocator>& 2507> 2508basic_string<_CharT, _Traits, _Allocator>::assign(_ForwardIterator __first, _ForwardIterator __last) 2509{ 2510 size_type __cap = capacity(); 2511 size_type __n = __string_is_trivial_iterator<_ForwardIterator>::value ? 2512 static_cast<size_type>(_VSTD::distance(__first, __last)) : 0; 2513 2514 if (__string_is_trivial_iterator<_ForwardIterator>::value && 2515 (__cap >= __n || !__addr_in_range(*__first))) 2516 { 2517 if (__cap < __n) 2518 { 2519 size_type __sz = size(); 2520 __grow_by(__cap, __n - __cap, __sz, 0, __sz); 2521 } 2522 pointer __p = __get_pointer(); 2523 for (; __first != __last; ++__p, (void) ++__first) 2524 traits_type::assign(*__p, *__first); 2525 traits_type::assign(*__p, value_type()); 2526 __set_size(__n); 2527 __invalidate_iterators_past(__n); 2528 } 2529 else 2530 { 2531 const basic_string __temp(__first, __last, __alloc()); 2532 assign(__temp.data(), __temp.size()); 2533 } 2534 return *this; 2535} 2536 2537template <class _CharT, class _Traits, class _Allocator> 2538basic_string<_CharT, _Traits, _Allocator>& 2539basic_string<_CharT, _Traits, _Allocator>::assign(const basic_string& __str, size_type __pos, size_type __n) 2540{ 2541 size_type __sz = __str.size(); 2542 if (__pos > __sz) 2543 this->__throw_out_of_range(); 2544 return assign(__str.data() + __pos, _VSTD::min(__n, __sz - __pos)); 2545} 2546 2547template <class _CharT, class _Traits, class _Allocator> 2548template <class _Tp> 2549__enable_if_t 2550< 2551 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value 2552 && !__is_same_uncvref<_Tp, basic_string<_CharT, _Traits, _Allocator> >::value, 2553 basic_string<_CharT, _Traits, _Allocator>& 2554> 2555basic_string<_CharT, _Traits, _Allocator>::assign(const _Tp & __t, size_type __pos, size_type __n) 2556{ 2557 __self_view __sv = __t; 2558 size_type __sz = __sv.size(); 2559 if (__pos > __sz) 2560 this->__throw_out_of_range(); 2561 return assign(__sv.data() + __pos, _VSTD::min(__n, __sz - __pos)); 2562} 2563 2564 2565template <class _CharT, class _Traits, class _Allocator> 2566basic_string<_CharT, _Traits, _Allocator>& 2567basic_string<_CharT, _Traits, _Allocator>::__assign_external(const value_type* __s) { 2568 return __assign_external(__s, traits_type::length(__s)); 2569} 2570 2571template <class _CharT, class _Traits, class _Allocator> 2572basic_string<_CharT, _Traits, _Allocator>& 2573basic_string<_CharT, _Traits, _Allocator>::assign(const value_type* __s) 2574{ 2575 _LIBCPP_ASSERT(__s != nullptr, "string::assign received nullptr"); 2576 return __builtin_constant_p(*__s) 2577 ? (traits_type::length(__s) < __min_cap 2578 ? __assign_short(__s, traits_type::length(__s)) 2579 : __assign_external(__s, traits_type::length(__s))) 2580 : __assign_external(__s); 2581} 2582// append 2583 2584template <class _CharT, class _Traits, class _Allocator> 2585basic_string<_CharT, _Traits, _Allocator>& 2586basic_string<_CharT, _Traits, _Allocator>::append(const value_type* __s, size_type __n) 2587{ 2588 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::append received nullptr"); 2589 size_type __cap = capacity(); 2590 size_type __sz = size(); 2591 if (__cap - __sz >= __n) 2592 { 2593 if (__n) 2594 { 2595 value_type* __p = _VSTD::__to_address(__get_pointer()); 2596 traits_type::copy(__p + __sz, __s, __n); 2597 __sz += __n; 2598 __set_size(__sz); 2599 traits_type::assign(__p[__sz], value_type()); 2600 } 2601 } 2602 else 2603 __grow_by_and_replace(__cap, __sz + __n - __cap, __sz, __sz, 0, __n, __s); 2604 return *this; 2605} 2606 2607template <class _CharT, class _Traits, class _Allocator> 2608basic_string<_CharT, _Traits, _Allocator>& 2609basic_string<_CharT, _Traits, _Allocator>::append(size_type __n, value_type __c) 2610{ 2611 if (__n) 2612 { 2613 size_type __cap = capacity(); 2614 size_type __sz = size(); 2615 if (__cap - __sz < __n) 2616 __grow_by(__cap, __sz + __n - __cap, __sz, __sz, 0); 2617 pointer __p = __get_pointer(); 2618 traits_type::assign(_VSTD::__to_address(__p) + __sz, __n, __c); 2619 __sz += __n; 2620 __set_size(__sz); 2621 traits_type::assign(__p[__sz], value_type()); 2622 } 2623 return *this; 2624} 2625 2626template <class _CharT, class _Traits, class _Allocator> 2627inline void 2628basic_string<_CharT, _Traits, _Allocator>::__append_default_init(size_type __n) 2629{ 2630 if (__n) 2631 { 2632 size_type __cap = capacity(); 2633 size_type __sz = size(); 2634 if (__cap - __sz < __n) 2635 __grow_by(__cap, __sz + __n - __cap, __sz, __sz, 0); 2636 pointer __p = __get_pointer(); 2637 __sz += __n; 2638 __set_size(__sz); 2639 traits_type::assign(__p[__sz], value_type()); 2640 } 2641} 2642 2643template <class _CharT, class _Traits, class _Allocator> 2644void 2645basic_string<_CharT, _Traits, _Allocator>::push_back(value_type __c) 2646{ 2647 bool __is_short = !__is_long(); 2648 size_type __cap; 2649 size_type __sz; 2650 if (__is_short) 2651 { 2652 __cap = __min_cap - 1; 2653 __sz = __get_short_size(); 2654 } 2655 else 2656 { 2657 __cap = __get_long_cap() - 1; 2658 __sz = __get_long_size(); 2659 } 2660 if (__sz == __cap) 2661 { 2662 __grow_by(__cap, 1, __sz, __sz, 0); 2663 __is_short = false; // the string is always long after __grow_by 2664 } 2665 pointer __p; 2666 if (__is_short) 2667 { 2668 __p = __get_short_pointer() + __sz; 2669 __set_short_size(__sz+1); 2670 } 2671 else 2672 { 2673 __p = __get_long_pointer() + __sz; 2674 __set_long_size(__sz+1); 2675 } 2676 traits_type::assign(*__p, __c); 2677 traits_type::assign(*++__p, value_type()); 2678} 2679 2680template <class _CharT, class _Traits, class _Allocator> 2681template<class _ForwardIterator> 2682__enable_if_t 2683< 2684 __is_cpp17_forward_iterator<_ForwardIterator>::value, 2685 basic_string<_CharT, _Traits, _Allocator>& 2686> 2687basic_string<_CharT, _Traits, _Allocator>::append( 2688 _ForwardIterator __first, _ForwardIterator __last) 2689{ 2690 size_type __sz = size(); 2691 size_type __cap = capacity(); 2692 size_type __n = static_cast<size_type>(_VSTD::distance(__first, __last)); 2693 if (__n) 2694 { 2695 if (__string_is_trivial_iterator<_ForwardIterator>::value && 2696 !__addr_in_range(*__first)) 2697 { 2698 if (__cap - __sz < __n) 2699 __grow_by(__cap, __sz + __n - __cap, __sz, __sz, 0); 2700 pointer __p = __get_pointer() + __sz; 2701 for (; __first != __last; ++__p, (void) ++__first) 2702 traits_type::assign(*__p, *__first); 2703 traits_type::assign(*__p, value_type()); 2704 __set_size(__sz + __n); 2705 } 2706 else 2707 { 2708 const basic_string __temp(__first, __last, __alloc()); 2709 append(__temp.data(), __temp.size()); 2710 } 2711 } 2712 return *this; 2713} 2714 2715template <class _CharT, class _Traits, class _Allocator> 2716inline 2717basic_string<_CharT, _Traits, _Allocator>& 2718basic_string<_CharT, _Traits, _Allocator>::append(const basic_string& __str) 2719{ 2720 return append(__str.data(), __str.size()); 2721} 2722 2723template <class _CharT, class _Traits, class _Allocator> 2724basic_string<_CharT, _Traits, _Allocator>& 2725basic_string<_CharT, _Traits, _Allocator>::append(const basic_string& __str, size_type __pos, size_type __n) 2726{ 2727 size_type __sz = __str.size(); 2728 if (__pos > __sz) 2729 this->__throw_out_of_range(); 2730 return append(__str.data() + __pos, _VSTD::min(__n, __sz - __pos)); 2731} 2732 2733template <class _CharT, class _Traits, class _Allocator> 2734template <class _Tp> 2735 __enable_if_t 2736 < 2737 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value && !__is_same_uncvref<_Tp, basic_string<_CharT, _Traits, _Allocator> >::value, 2738 basic_string<_CharT, _Traits, _Allocator>& 2739 > 2740basic_string<_CharT, _Traits, _Allocator>::append(const _Tp & __t, size_type __pos, size_type __n) 2741{ 2742 __self_view __sv = __t; 2743 size_type __sz = __sv.size(); 2744 if (__pos > __sz) 2745 this->__throw_out_of_range(); 2746 return append(__sv.data() + __pos, _VSTD::min(__n, __sz - __pos)); 2747} 2748 2749template <class _CharT, class _Traits, class _Allocator> 2750basic_string<_CharT, _Traits, _Allocator>& 2751basic_string<_CharT, _Traits, _Allocator>::append(const value_type* __s) 2752{ 2753 _LIBCPP_ASSERT(__s != nullptr, "string::append received nullptr"); 2754 return append(__s, traits_type::length(__s)); 2755} 2756 2757// insert 2758 2759template <class _CharT, class _Traits, class _Allocator> 2760basic_string<_CharT, _Traits, _Allocator>& 2761basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos, const value_type* __s, size_type __n) 2762{ 2763 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::insert received nullptr"); 2764 size_type __sz = size(); 2765 if (__pos > __sz) 2766 this->__throw_out_of_range(); 2767 size_type __cap = capacity(); 2768 if (__cap - __sz >= __n) 2769 { 2770 if (__n) 2771 { 2772 value_type* __p = _VSTD::__to_address(__get_pointer()); 2773 size_type __n_move = __sz - __pos; 2774 if (__n_move != 0) 2775 { 2776 if (__p + __pos <= __s && __s < __p + __sz) 2777 __s += __n; 2778 traits_type::move(__p + __pos + __n, __p + __pos, __n_move); 2779 } 2780 traits_type::move(__p + __pos, __s, __n); 2781 __sz += __n; 2782 __set_size(__sz); 2783 traits_type::assign(__p[__sz], value_type()); 2784 } 2785 } 2786 else 2787 __grow_by_and_replace(__cap, __sz + __n - __cap, __sz, __pos, 0, __n, __s); 2788 return *this; 2789} 2790 2791template <class _CharT, class _Traits, class _Allocator> 2792basic_string<_CharT, _Traits, _Allocator>& 2793basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos, size_type __n, value_type __c) 2794{ 2795 size_type __sz = size(); 2796 if (__pos > __sz) 2797 this->__throw_out_of_range(); 2798 if (__n) 2799 { 2800 size_type __cap = capacity(); 2801 value_type* __p; 2802 if (__cap - __sz >= __n) 2803 { 2804 __p = _VSTD::__to_address(__get_pointer()); 2805 size_type __n_move = __sz - __pos; 2806 if (__n_move != 0) 2807 traits_type::move(__p + __pos + __n, __p + __pos, __n_move); 2808 } 2809 else 2810 { 2811 __grow_by(__cap, __sz + __n - __cap, __sz, __pos, 0, __n); 2812 __p = _VSTD::__to_address(__get_long_pointer()); 2813 } 2814 traits_type::assign(__p + __pos, __n, __c); 2815 __sz += __n; 2816 __set_size(__sz); 2817 traits_type::assign(__p[__sz], value_type()); 2818 } 2819 return *this; 2820} 2821 2822template <class _CharT, class _Traits, class _Allocator> 2823template<class _InputIterator> 2824__enable_if_t 2825< 2826 __is_exactly_cpp17_input_iterator<_InputIterator>::value, 2827 typename basic_string<_CharT, _Traits, _Allocator>::iterator 2828> 2829basic_string<_CharT, _Traits, _Allocator>::insert(const_iterator __pos, _InputIterator __first, _InputIterator __last) 2830{ 2831 _LIBCPP_DEBUG_ASSERT(__get_const_db()->__find_c_from_i(&__pos) == this, 2832 "string::insert(iterator, range) called with an iterator not" 2833 " referring to this string"); 2834 const basic_string __temp(__first, __last, __alloc()); 2835 return insert(__pos, __temp.data(), __temp.data() + __temp.size()); 2836} 2837 2838template <class _CharT, class _Traits, class _Allocator> 2839template<class _ForwardIterator> 2840__enable_if_t 2841< 2842 __is_cpp17_forward_iterator<_ForwardIterator>::value, 2843 typename basic_string<_CharT, _Traits, _Allocator>::iterator 2844> 2845basic_string<_CharT, _Traits, _Allocator>::insert(const_iterator __pos, _ForwardIterator __first, _ForwardIterator __last) 2846{ 2847 _LIBCPP_DEBUG_ASSERT(__get_const_db()->__find_c_from_i(&__pos) == this, 2848 "string::insert(iterator, range) called with an iterator not" 2849 " referring to this string"); 2850 2851 size_type __ip = static_cast<size_type>(__pos - begin()); 2852 size_type __n = static_cast<size_type>(_VSTD::distance(__first, __last)); 2853 if (__n) 2854 { 2855 if (__string_is_trivial_iterator<_ForwardIterator>::value && 2856 !__addr_in_range(*__first)) 2857 { 2858 size_type __sz = size(); 2859 size_type __cap = capacity(); 2860 value_type* __p; 2861 if (__cap - __sz >= __n) 2862 { 2863 __p = _VSTD::__to_address(__get_pointer()); 2864 size_type __n_move = __sz - __ip; 2865 if (__n_move != 0) 2866 traits_type::move(__p + __ip + __n, __p + __ip, __n_move); 2867 } 2868 else 2869 { 2870 __grow_by(__cap, __sz + __n - __cap, __sz, __ip, 0, __n); 2871 __p = _VSTD::__to_address(__get_long_pointer()); 2872 } 2873 __sz += __n; 2874 __set_size(__sz); 2875 traits_type::assign(__p[__sz], value_type()); 2876 for (__p += __ip; __first != __last; ++__p, (void) ++__first) 2877 traits_type::assign(*__p, *__first); 2878 } 2879 else 2880 { 2881 const basic_string __temp(__first, __last, __alloc()); 2882 return insert(__pos, __temp.data(), __temp.data() + __temp.size()); 2883 } 2884 } 2885 return begin() + __ip; 2886} 2887 2888template <class _CharT, class _Traits, class _Allocator> 2889inline 2890basic_string<_CharT, _Traits, _Allocator>& 2891basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos1, const basic_string& __str) 2892{ 2893 return insert(__pos1, __str.data(), __str.size()); 2894} 2895 2896template <class _CharT, class _Traits, class _Allocator> 2897basic_string<_CharT, _Traits, _Allocator>& 2898basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos1, const basic_string& __str, 2899 size_type __pos2, size_type __n) 2900{ 2901 size_type __str_sz = __str.size(); 2902 if (__pos2 > __str_sz) 2903 this->__throw_out_of_range(); 2904 return insert(__pos1, __str.data() + __pos2, _VSTD::min(__n, __str_sz - __pos2)); 2905} 2906 2907template <class _CharT, class _Traits, class _Allocator> 2908template <class _Tp> 2909__enable_if_t 2910< 2911 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value && !__is_same_uncvref<_Tp, basic_string<_CharT, _Traits, _Allocator> >::value, 2912 basic_string<_CharT, _Traits, _Allocator>& 2913> 2914basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos1, const _Tp& __t, 2915 size_type __pos2, size_type __n) 2916{ 2917 __self_view __sv = __t; 2918 size_type __str_sz = __sv.size(); 2919 if (__pos2 > __str_sz) 2920 this->__throw_out_of_range(); 2921 return insert(__pos1, __sv.data() + __pos2, _VSTD::min(__n, __str_sz - __pos2)); 2922} 2923 2924template <class _CharT, class _Traits, class _Allocator> 2925basic_string<_CharT, _Traits, _Allocator>& 2926basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos, const value_type* __s) 2927{ 2928 _LIBCPP_ASSERT(__s != nullptr, "string::insert received nullptr"); 2929 return insert(__pos, __s, traits_type::length(__s)); 2930} 2931 2932template <class _CharT, class _Traits, class _Allocator> 2933typename basic_string<_CharT, _Traits, _Allocator>::iterator 2934basic_string<_CharT, _Traits, _Allocator>::insert(const_iterator __pos, value_type __c) 2935{ 2936 size_type __ip = static_cast<size_type>(__pos - begin()); 2937 size_type __sz = size(); 2938 size_type __cap = capacity(); 2939 value_type* __p; 2940 if (__cap == __sz) 2941 { 2942 __grow_by(__cap, 1, __sz, __ip, 0, 1); 2943 __p = _VSTD::__to_address(__get_long_pointer()); 2944 } 2945 else 2946 { 2947 __p = _VSTD::__to_address(__get_pointer()); 2948 size_type __n_move = __sz - __ip; 2949 if (__n_move != 0) 2950 traits_type::move(__p + __ip + 1, __p + __ip, __n_move); 2951 } 2952 traits_type::assign(__p[__ip], __c); 2953 traits_type::assign(__p[++__sz], value_type()); 2954 __set_size(__sz); 2955 return begin() + static_cast<difference_type>(__ip); 2956} 2957 2958template <class _CharT, class _Traits, class _Allocator> 2959inline 2960typename basic_string<_CharT, _Traits, _Allocator>::iterator 2961basic_string<_CharT, _Traits, _Allocator>::insert(const_iterator __pos, size_type __n, value_type __c) 2962{ 2963 _LIBCPP_DEBUG_ASSERT(__get_const_db()->__find_c_from_i(&__pos) == this, 2964 "string::insert(iterator, n, value) called with an iterator not" 2965 " referring to this string"); 2966 difference_type __p = __pos - begin(); 2967 insert(static_cast<size_type>(__p), __n, __c); 2968 return begin() + __p; 2969} 2970 2971// replace 2972 2973template <class _CharT, class _Traits, class _Allocator> 2974basic_string<_CharT, _Traits, _Allocator>& 2975basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos, size_type __n1, const value_type* __s, size_type __n2) 2976 _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK 2977{ 2978 _LIBCPP_ASSERT(__n2 == 0 || __s != nullptr, "string::replace received nullptr"); 2979 size_type __sz = size(); 2980 if (__pos > __sz) 2981 this->__throw_out_of_range(); 2982 __n1 = _VSTD::min(__n1, __sz - __pos); 2983 size_type __cap = capacity(); 2984 if (__cap - __sz + __n1 >= __n2) 2985 { 2986 value_type* __p = _VSTD::__to_address(__get_pointer()); 2987 if (__n1 != __n2) 2988 { 2989 size_type __n_move = __sz - __pos - __n1; 2990 if (__n_move != 0) 2991 { 2992 if (__n1 > __n2) 2993 { 2994 traits_type::move(__p + __pos, __s, __n2); 2995 traits_type::move(__p + __pos + __n2, __p + __pos + __n1, __n_move); 2996 return __null_terminate_at(__p, __sz + (__n2 - __n1)); 2997 } 2998 if (__p + __pos < __s && __s < __p + __sz) 2999 { 3000 if (__p + __pos + __n1 <= __s) 3001 __s += __n2 - __n1; 3002 else // __p + __pos < __s < __p + __pos + __n1 3003 { 3004 traits_type::move(__p + __pos, __s, __n1); 3005 __pos += __n1; 3006 __s += __n2; 3007 __n2 -= __n1; 3008 __n1 = 0; 3009 } 3010 } 3011 traits_type::move(__p + __pos + __n2, __p + __pos + __n1, __n_move); 3012 } 3013 } 3014 traits_type::move(__p + __pos, __s, __n2); 3015 return __null_terminate_at(__p, __sz + (__n2 - __n1)); 3016 } 3017 else 3018 __grow_by_and_replace(__cap, __sz - __n1 + __n2 - __cap, __sz, __pos, __n1, __n2, __s); 3019 return *this; 3020} 3021 3022template <class _CharT, class _Traits, class _Allocator> 3023basic_string<_CharT, _Traits, _Allocator>& 3024basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos, size_type __n1, size_type __n2, value_type __c) 3025{ 3026 size_type __sz = size(); 3027 if (__pos > __sz) 3028 this->__throw_out_of_range(); 3029 __n1 = _VSTD::min(__n1, __sz - __pos); 3030 size_type __cap = capacity(); 3031 value_type* __p; 3032 if (__cap - __sz + __n1 >= __n2) 3033 { 3034 __p = _VSTD::__to_address(__get_pointer()); 3035 if (__n1 != __n2) 3036 { 3037 size_type __n_move = __sz - __pos - __n1; 3038 if (__n_move != 0) 3039 traits_type::move(__p + __pos + __n2, __p + __pos + __n1, __n_move); 3040 } 3041 } 3042 else 3043 { 3044 __grow_by(__cap, __sz - __n1 + __n2 - __cap, __sz, __pos, __n1, __n2); 3045 __p = _VSTD::__to_address(__get_long_pointer()); 3046 } 3047 traits_type::assign(__p + __pos, __n2, __c); 3048 return __null_terminate_at(__p, __sz - (__n1 - __n2)); 3049} 3050 3051template <class _CharT, class _Traits, class _Allocator> 3052template<class _InputIterator> 3053__enable_if_t 3054< 3055 __is_cpp17_input_iterator<_InputIterator>::value, 3056 basic_string<_CharT, _Traits, _Allocator>& 3057> 3058basic_string<_CharT, _Traits, _Allocator>::replace(const_iterator __i1, const_iterator __i2, 3059 _InputIterator __j1, _InputIterator __j2) 3060{ 3061 const basic_string __temp(__j1, __j2, __alloc()); 3062 return this->replace(__i1, __i2, __temp); 3063} 3064 3065template <class _CharT, class _Traits, class _Allocator> 3066inline 3067basic_string<_CharT, _Traits, _Allocator>& 3068basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos1, size_type __n1, const basic_string& __str) 3069{ 3070 return replace(__pos1, __n1, __str.data(), __str.size()); 3071} 3072 3073template <class _CharT, class _Traits, class _Allocator> 3074basic_string<_CharT, _Traits, _Allocator>& 3075basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos1, size_type __n1, const basic_string& __str, 3076 size_type __pos2, size_type __n2) 3077{ 3078 size_type __str_sz = __str.size(); 3079 if (__pos2 > __str_sz) 3080 this->__throw_out_of_range(); 3081 return replace(__pos1, __n1, __str.data() + __pos2, _VSTD::min(__n2, __str_sz - __pos2)); 3082} 3083 3084template <class _CharT, class _Traits, class _Allocator> 3085template <class _Tp> 3086__enable_if_t 3087< 3088 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value && !__is_same_uncvref<_Tp, basic_string<_CharT, _Traits, _Allocator> >::value, 3089 basic_string<_CharT, _Traits, _Allocator>& 3090> 3091basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos1, size_type __n1, const _Tp& __t, 3092 size_type __pos2, size_type __n2) 3093{ 3094 __self_view __sv = __t; 3095 size_type __str_sz = __sv.size(); 3096 if (__pos2 > __str_sz) 3097 this->__throw_out_of_range(); 3098 return replace(__pos1, __n1, __sv.data() + __pos2, _VSTD::min(__n2, __str_sz - __pos2)); 3099} 3100 3101template <class _CharT, class _Traits, class _Allocator> 3102basic_string<_CharT, _Traits, _Allocator>& 3103basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos, size_type __n1, const value_type* __s) 3104{ 3105 _LIBCPP_ASSERT(__s != nullptr, "string::replace received nullptr"); 3106 return replace(__pos, __n1, __s, traits_type::length(__s)); 3107} 3108 3109template <class _CharT, class _Traits, class _Allocator> 3110inline 3111basic_string<_CharT, _Traits, _Allocator>& 3112basic_string<_CharT, _Traits, _Allocator>::replace(const_iterator __i1, const_iterator __i2, const basic_string& __str) 3113{ 3114 return replace(static_cast<size_type>(__i1 - begin()), static_cast<size_type>(__i2 - __i1), 3115 __str.data(), __str.size()); 3116} 3117 3118template <class _CharT, class _Traits, class _Allocator> 3119inline 3120basic_string<_CharT, _Traits, _Allocator>& 3121basic_string<_CharT, _Traits, _Allocator>::replace(const_iterator __i1, const_iterator __i2, const value_type* __s, size_type __n) 3122{ 3123 return replace(static_cast<size_type>(__i1 - begin()), static_cast<size_type>(__i2 - __i1), __s, __n); 3124} 3125 3126template <class _CharT, class _Traits, class _Allocator> 3127inline 3128basic_string<_CharT, _Traits, _Allocator>& 3129basic_string<_CharT, _Traits, _Allocator>::replace(const_iterator __i1, const_iterator __i2, const value_type* __s) 3130{ 3131 return replace(static_cast<size_type>(__i1 - begin()), static_cast<size_type>(__i2 - __i1), __s); 3132} 3133 3134template <class _CharT, class _Traits, class _Allocator> 3135inline 3136basic_string<_CharT, _Traits, _Allocator>& 3137basic_string<_CharT, _Traits, _Allocator>::replace(const_iterator __i1, const_iterator __i2, size_type __n, value_type __c) 3138{ 3139 return replace(static_cast<size_type>(__i1 - begin()), static_cast<size_type>(__i2 - __i1), __n, __c); 3140} 3141 3142// erase 3143 3144// 'externally instantiated' erase() implementation, called when __n != npos. 3145// Does not check __pos against size() 3146template <class _CharT, class _Traits, class _Allocator> 3147void 3148basic_string<_CharT, _Traits, _Allocator>::__erase_external_with_move( 3149 size_type __pos, size_type __n) 3150{ 3151 if (__n) 3152 { 3153 size_type __sz = size(); 3154 value_type* __p = _VSTD::__to_address(__get_pointer()); 3155 __n = _VSTD::min(__n, __sz - __pos); 3156 size_type __n_move = __sz - __pos - __n; 3157 if (__n_move != 0) 3158 traits_type::move(__p + __pos, __p + __pos + __n, __n_move); 3159 __null_terminate_at(__p, __sz - __n); 3160 } 3161} 3162 3163template <class _CharT, class _Traits, class _Allocator> 3164basic_string<_CharT, _Traits, _Allocator>& 3165basic_string<_CharT, _Traits, _Allocator>::erase(size_type __pos, 3166 size_type __n) { 3167 if (__pos > size()) this->__throw_out_of_range(); 3168 if (__n == npos) { 3169 __erase_to_end(__pos); 3170 } else { 3171 __erase_external_with_move(__pos, __n); 3172 } 3173 return *this; 3174} 3175 3176template <class _CharT, class _Traits, class _Allocator> 3177inline 3178typename basic_string<_CharT, _Traits, _Allocator>::iterator 3179basic_string<_CharT, _Traits, _Allocator>::erase(const_iterator __pos) 3180{ 3181 _LIBCPP_DEBUG_ASSERT(__get_const_db()->__find_c_from_i(&__pos) == this, 3182 "string::erase(iterator) called with an iterator not" 3183 " referring to this string"); 3184 3185 _LIBCPP_ASSERT(__pos != end(), "string::erase(iterator) called with a non-dereferenceable iterator"); 3186 iterator __b = begin(); 3187 size_type __r = static_cast<size_type>(__pos - __b); 3188 erase(__r, 1); 3189 return __b + static_cast<difference_type>(__r); 3190} 3191 3192template <class _CharT, class _Traits, class _Allocator> 3193inline 3194typename basic_string<_CharT, _Traits, _Allocator>::iterator 3195basic_string<_CharT, _Traits, _Allocator>::erase(const_iterator __first, const_iterator __last) 3196{ 3197 _LIBCPP_DEBUG_ASSERT(__get_const_db()->__find_c_from_i(&__first) == this, 3198 "string::erase(iterator, iterator) called with an iterator not" 3199 " referring to this string"); 3200 3201 _LIBCPP_ASSERT(__first <= __last, "string::erase(first, last) called with invalid range"); 3202 iterator __b = begin(); 3203 size_type __r = static_cast<size_type>(__first - __b); 3204 erase(__r, static_cast<size_type>(__last - __first)); 3205 return __b + static_cast<difference_type>(__r); 3206} 3207 3208template <class _CharT, class _Traits, class _Allocator> 3209inline 3210void 3211basic_string<_CharT, _Traits, _Allocator>::pop_back() 3212{ 3213 _LIBCPP_ASSERT(!empty(), "string::pop_back(): string is already empty"); 3214 __erase_to_end(size() - 1); 3215} 3216 3217template <class _CharT, class _Traits, class _Allocator> 3218inline 3219void 3220basic_string<_CharT, _Traits, _Allocator>::clear() _NOEXCEPT 3221{ 3222 __invalidate_all_iterators(); 3223 if (__is_long()) 3224 { 3225 traits_type::assign(*__get_long_pointer(), value_type()); 3226 __set_long_size(0); 3227 } 3228 else 3229 { 3230 traits_type::assign(*__get_short_pointer(), value_type()); 3231 __set_short_size(0); 3232 } 3233} 3234 3235template <class _CharT, class _Traits, class _Allocator> 3236inline 3237void 3238basic_string<_CharT, _Traits, _Allocator>::__erase_to_end(size_type __pos) 3239{ 3240 __null_terminate_at(_VSTD::__to_address(__get_pointer()), __pos); 3241} 3242 3243template <class _CharT, class _Traits, class _Allocator> 3244void 3245basic_string<_CharT, _Traits, _Allocator>::resize(size_type __n, value_type __c) 3246{ 3247 size_type __sz = size(); 3248 if (__n > __sz) 3249 append(__n - __sz, __c); 3250 else 3251 __erase_to_end(__n); 3252} 3253 3254template <class _CharT, class _Traits, class _Allocator> 3255inline void 3256basic_string<_CharT, _Traits, _Allocator>::__resize_default_init(size_type __n) 3257{ 3258 size_type __sz = size(); 3259 if (__n > __sz) { 3260 __append_default_init(__n - __sz); 3261 } else 3262 __erase_to_end(__n); 3263} 3264 3265template <class _CharT, class _Traits, class _Allocator> 3266inline 3267typename basic_string<_CharT, _Traits, _Allocator>::size_type 3268basic_string<_CharT, _Traits, _Allocator>::max_size() const _NOEXCEPT 3269{ 3270 size_type __m = __alloc_traits::max_size(__alloc()); 3271#ifdef _LIBCPP_BIG_ENDIAN 3272 return (__m <= ~__long_mask ? __m : __m/2) - __alignment; 3273#else 3274 return __m - __alignment; 3275#endif 3276} 3277 3278template <class _CharT, class _Traits, class _Allocator> 3279void 3280basic_string<_CharT, _Traits, _Allocator>::reserve(size_type __requested_capacity) 3281{ 3282 if (__requested_capacity > max_size()) 3283 this->__throw_length_error(); 3284 3285#if _LIBCPP_STD_VER > 17 3286 // Reserve never shrinks as of C++20. 3287 if (__requested_capacity <= capacity()) return; 3288#endif 3289 3290 size_type __target_capacity = _VSTD::max(__requested_capacity, size()); 3291 __target_capacity = __recommend(__target_capacity); 3292 if (__target_capacity == capacity()) return; 3293 3294 __shrink_or_extend(__target_capacity); 3295} 3296 3297template <class _CharT, class _Traits, class _Allocator> 3298inline 3299void 3300basic_string<_CharT, _Traits, _Allocator>::shrink_to_fit() _NOEXCEPT 3301{ 3302 size_type __target_capacity = __recommend(size()); 3303 if (__target_capacity == capacity()) return; 3304 3305 __shrink_or_extend(__target_capacity); 3306} 3307 3308template <class _CharT, class _Traits, class _Allocator> 3309inline 3310void 3311basic_string<_CharT, _Traits, _Allocator>::__shrink_or_extend(size_type __target_capacity) 3312{ 3313 size_type __cap = capacity(); 3314 size_type __sz = size(); 3315 3316 pointer __new_data, __p; 3317 bool __was_long, __now_long; 3318 if (__target_capacity == __min_cap - 1) 3319 { 3320 __was_long = true; 3321 __now_long = false; 3322 __new_data = __get_short_pointer(); 3323 __p = __get_long_pointer(); 3324 } 3325 else 3326 { 3327 if (__target_capacity > __cap) 3328 __new_data = __alloc_traits::allocate(__alloc(), __target_capacity+1); 3329 else 3330 { 3331 #ifndef _LIBCPP_NO_EXCEPTIONS 3332 try 3333 { 3334 #endif // _LIBCPP_NO_EXCEPTIONS 3335 __new_data = __alloc_traits::allocate(__alloc(), __target_capacity+1); 3336 #ifndef _LIBCPP_NO_EXCEPTIONS 3337 } 3338 catch (...) 3339 { 3340 return; 3341 } 3342 #else // _LIBCPP_NO_EXCEPTIONS 3343 if (__new_data == nullptr) 3344 return; 3345 #endif // _LIBCPP_NO_EXCEPTIONS 3346 } 3347 __now_long = true; 3348 __was_long = __is_long(); 3349 __p = __get_pointer(); 3350 } 3351 traits_type::copy(_VSTD::__to_address(__new_data), 3352 _VSTD::__to_address(__p), size()+1); 3353 if (__was_long) 3354 __alloc_traits::deallocate(__alloc(), __p, __cap+1); 3355 if (__now_long) 3356 { 3357 __set_long_cap(__target_capacity+1); 3358 __set_long_size(__sz); 3359 __set_long_pointer(__new_data); 3360 } 3361 else 3362 __set_short_size(__sz); 3363 __invalidate_all_iterators(); 3364} 3365 3366template <class _CharT, class _Traits, class _Allocator> 3367inline 3368typename basic_string<_CharT, _Traits, _Allocator>::const_reference 3369basic_string<_CharT, _Traits, _Allocator>::operator[](size_type __pos) const _NOEXCEPT 3370{ 3371 _LIBCPP_ASSERT(__pos <= size(), "string index out of bounds"); 3372 return *(data() + __pos); 3373} 3374 3375template <class _CharT, class _Traits, class _Allocator> 3376inline 3377typename basic_string<_CharT, _Traits, _Allocator>::reference 3378basic_string<_CharT, _Traits, _Allocator>::operator[](size_type __pos) _NOEXCEPT 3379{ 3380 _LIBCPP_ASSERT(__pos <= size(), "string index out of bounds"); 3381 return *(__get_pointer() + __pos); 3382} 3383 3384template <class _CharT, class _Traits, class _Allocator> 3385typename basic_string<_CharT, _Traits, _Allocator>::const_reference 3386basic_string<_CharT, _Traits, _Allocator>::at(size_type __n) const 3387{ 3388 if (__n >= size()) 3389 this->__throw_out_of_range(); 3390 return (*this)[__n]; 3391} 3392 3393template <class _CharT, class _Traits, class _Allocator> 3394typename basic_string<_CharT, _Traits, _Allocator>::reference 3395basic_string<_CharT, _Traits, _Allocator>::at(size_type __n) 3396{ 3397 if (__n >= size()) 3398 this->__throw_out_of_range(); 3399 return (*this)[__n]; 3400} 3401 3402template <class _CharT, class _Traits, class _Allocator> 3403inline 3404typename basic_string<_CharT, _Traits, _Allocator>::reference 3405basic_string<_CharT, _Traits, _Allocator>::front() _NOEXCEPT 3406{ 3407 _LIBCPP_ASSERT(!empty(), "string::front(): string is empty"); 3408 return *__get_pointer(); 3409} 3410 3411template <class _CharT, class _Traits, class _Allocator> 3412inline 3413typename basic_string<_CharT, _Traits, _Allocator>::const_reference 3414basic_string<_CharT, _Traits, _Allocator>::front() const _NOEXCEPT 3415{ 3416 _LIBCPP_ASSERT(!empty(), "string::front(): string is empty"); 3417 return *data(); 3418} 3419 3420template <class _CharT, class _Traits, class _Allocator> 3421inline 3422typename basic_string<_CharT, _Traits, _Allocator>::reference 3423basic_string<_CharT, _Traits, _Allocator>::back() _NOEXCEPT 3424{ 3425 _LIBCPP_ASSERT(!empty(), "string::back(): string is empty"); 3426 return *(__get_pointer() + size() - 1); 3427} 3428 3429template <class _CharT, class _Traits, class _Allocator> 3430inline 3431typename basic_string<_CharT, _Traits, _Allocator>::const_reference 3432basic_string<_CharT, _Traits, _Allocator>::back() const _NOEXCEPT 3433{ 3434 _LIBCPP_ASSERT(!empty(), "string::back(): string is empty"); 3435 return *(data() + size() - 1); 3436} 3437 3438template <class _CharT, class _Traits, class _Allocator> 3439typename basic_string<_CharT, _Traits, _Allocator>::size_type 3440basic_string<_CharT, _Traits, _Allocator>::copy(value_type* __s, size_type __n, size_type __pos) const 3441{ 3442 size_type __sz = size(); 3443 if (__pos > __sz) 3444 this->__throw_out_of_range(); 3445 size_type __rlen = _VSTD::min(__n, __sz - __pos); 3446 traits_type::copy(__s, data() + __pos, __rlen); 3447 return __rlen; 3448} 3449 3450template <class _CharT, class _Traits, class _Allocator> 3451inline 3452basic_string<_CharT, _Traits, _Allocator> 3453basic_string<_CharT, _Traits, _Allocator>::substr(size_type __pos, size_type __n) const 3454{ 3455 return basic_string(*this, __pos, __n, __alloc()); 3456} 3457 3458template <class _CharT, class _Traits, class _Allocator> 3459inline 3460void 3461basic_string<_CharT, _Traits, _Allocator>::swap(basic_string& __str) 3462#if _LIBCPP_STD_VER >= 14 3463 _NOEXCEPT 3464#else 3465 _NOEXCEPT_(!__alloc_traits::propagate_on_container_swap::value || 3466 __is_nothrow_swappable<allocator_type>::value) 3467#endif 3468{ 3469#if _LIBCPP_DEBUG_LEVEL == 2 3470 if (!__is_long()) 3471 __get_db()->__invalidate_all(this); 3472 if (!__str.__is_long()) 3473 __get_db()->__invalidate_all(&__str); 3474 __get_db()->swap(this, &__str); 3475#endif 3476 _LIBCPP_ASSERT( 3477 __alloc_traits::propagate_on_container_swap::value || 3478 __alloc_traits::is_always_equal::value || 3479 __alloc() == __str.__alloc(), "swapping non-equal allocators"); 3480 _VSTD::swap(__r_.first(), __str.__r_.first()); 3481 _VSTD::__swap_allocator(__alloc(), __str.__alloc()); 3482} 3483 3484// find 3485 3486template <class _Traits> 3487struct _LIBCPP_HIDDEN __traits_eq 3488{ 3489 typedef typename _Traits::char_type char_type; 3490 _LIBCPP_INLINE_VISIBILITY 3491 bool operator()(const char_type& __x, const char_type& __y) _NOEXCEPT 3492 {return _Traits::eq(__x, __y);} 3493}; 3494 3495template<class _CharT, class _Traits, class _Allocator> 3496typename basic_string<_CharT, _Traits, _Allocator>::size_type 3497basic_string<_CharT, _Traits, _Allocator>::find(const value_type* __s, 3498 size_type __pos, 3499 size_type __n) const _NOEXCEPT 3500{ 3501 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::find(): received nullptr"); 3502 return __str_find<value_type, size_type, traits_type, npos> 3503 (data(), size(), __s, __pos, __n); 3504} 3505 3506template<class _CharT, class _Traits, class _Allocator> 3507inline 3508typename basic_string<_CharT, _Traits, _Allocator>::size_type 3509basic_string<_CharT, _Traits, _Allocator>::find(const basic_string& __str, 3510 size_type __pos) const _NOEXCEPT 3511{ 3512 return __str_find<value_type, size_type, traits_type, npos> 3513 (data(), size(), __str.data(), __pos, __str.size()); 3514} 3515 3516template<class _CharT, class _Traits, class _Allocator> 3517template <class _Tp> 3518__enable_if_t 3519< 3520 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3521 typename basic_string<_CharT, _Traits, _Allocator>::size_type 3522> 3523basic_string<_CharT, _Traits, _Allocator>::find(const _Tp &__t, 3524 size_type __pos) const _NOEXCEPT 3525{ 3526 __self_view __sv = __t; 3527 return __str_find<value_type, size_type, traits_type, npos> 3528 (data(), size(), __sv.data(), __pos, __sv.size()); 3529} 3530 3531template<class _CharT, class _Traits, class _Allocator> 3532inline 3533typename basic_string<_CharT, _Traits, _Allocator>::size_type 3534basic_string<_CharT, _Traits, _Allocator>::find(const value_type* __s, 3535 size_type __pos) const _NOEXCEPT 3536{ 3537 _LIBCPP_ASSERT(__s != nullptr, "string::find(): received nullptr"); 3538 return __str_find<value_type, size_type, traits_type, npos> 3539 (data(), size(), __s, __pos, traits_type::length(__s)); 3540} 3541 3542template<class _CharT, class _Traits, class _Allocator> 3543typename basic_string<_CharT, _Traits, _Allocator>::size_type 3544basic_string<_CharT, _Traits, _Allocator>::find(value_type __c, 3545 size_type __pos) const _NOEXCEPT 3546{ 3547 return __str_find<value_type, size_type, traits_type, npos> 3548 (data(), size(), __c, __pos); 3549} 3550 3551// rfind 3552 3553template<class _CharT, class _Traits, class _Allocator> 3554typename basic_string<_CharT, _Traits, _Allocator>::size_type 3555basic_string<_CharT, _Traits, _Allocator>::rfind(const value_type* __s, 3556 size_type __pos, 3557 size_type __n) const _NOEXCEPT 3558{ 3559 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::rfind(): received nullptr"); 3560 return __str_rfind<value_type, size_type, traits_type, npos> 3561 (data(), size(), __s, __pos, __n); 3562} 3563 3564template<class _CharT, class _Traits, class _Allocator> 3565inline 3566typename basic_string<_CharT, _Traits, _Allocator>::size_type 3567basic_string<_CharT, _Traits, _Allocator>::rfind(const basic_string& __str, 3568 size_type __pos) const _NOEXCEPT 3569{ 3570 return __str_rfind<value_type, size_type, traits_type, npos> 3571 (data(), size(), __str.data(), __pos, __str.size()); 3572} 3573 3574template<class _CharT, class _Traits, class _Allocator> 3575template <class _Tp> 3576__enable_if_t 3577< 3578 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3579 typename basic_string<_CharT, _Traits, _Allocator>::size_type 3580> 3581basic_string<_CharT, _Traits, _Allocator>::rfind(const _Tp& __t, 3582 size_type __pos) const _NOEXCEPT 3583{ 3584 __self_view __sv = __t; 3585 return __str_rfind<value_type, size_type, traits_type, npos> 3586 (data(), size(), __sv.data(), __pos, __sv.size()); 3587} 3588 3589template<class _CharT, class _Traits, class _Allocator> 3590inline 3591typename basic_string<_CharT, _Traits, _Allocator>::size_type 3592basic_string<_CharT, _Traits, _Allocator>::rfind(const value_type* __s, 3593 size_type __pos) const _NOEXCEPT 3594{ 3595 _LIBCPP_ASSERT(__s != nullptr, "string::rfind(): received nullptr"); 3596 return __str_rfind<value_type, size_type, traits_type, npos> 3597 (data(), size(), __s, __pos, traits_type::length(__s)); 3598} 3599 3600template<class _CharT, class _Traits, class _Allocator> 3601typename basic_string<_CharT, _Traits, _Allocator>::size_type 3602basic_string<_CharT, _Traits, _Allocator>::rfind(value_type __c, 3603 size_type __pos) const _NOEXCEPT 3604{ 3605 return __str_rfind<value_type, size_type, traits_type, npos> 3606 (data(), size(), __c, __pos); 3607} 3608 3609// find_first_of 3610 3611template<class _CharT, class _Traits, class _Allocator> 3612typename basic_string<_CharT, _Traits, _Allocator>::size_type 3613basic_string<_CharT, _Traits, _Allocator>::find_first_of(const value_type* __s, 3614 size_type __pos, 3615 size_type __n) const _NOEXCEPT 3616{ 3617 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::find_first_of(): received nullptr"); 3618 return __str_find_first_of<value_type, size_type, traits_type, npos> 3619 (data(), size(), __s, __pos, __n); 3620} 3621 3622template<class _CharT, class _Traits, class _Allocator> 3623inline 3624typename basic_string<_CharT, _Traits, _Allocator>::size_type 3625basic_string<_CharT, _Traits, _Allocator>::find_first_of(const basic_string& __str, 3626 size_type __pos) const _NOEXCEPT 3627{ 3628 return __str_find_first_of<value_type, size_type, traits_type, npos> 3629 (data(), size(), __str.data(), __pos, __str.size()); 3630} 3631 3632template<class _CharT, class _Traits, class _Allocator> 3633template <class _Tp> 3634__enable_if_t 3635< 3636 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3637 typename basic_string<_CharT, _Traits, _Allocator>::size_type 3638> 3639basic_string<_CharT, _Traits, _Allocator>::find_first_of(const _Tp& __t, 3640 size_type __pos) const _NOEXCEPT 3641{ 3642 __self_view __sv = __t; 3643 return __str_find_first_of<value_type, size_type, traits_type, npos> 3644 (data(), size(), __sv.data(), __pos, __sv.size()); 3645} 3646 3647template<class _CharT, class _Traits, class _Allocator> 3648inline 3649typename basic_string<_CharT, _Traits, _Allocator>::size_type 3650basic_string<_CharT, _Traits, _Allocator>::find_first_of(const value_type* __s, 3651 size_type __pos) const _NOEXCEPT 3652{ 3653 _LIBCPP_ASSERT(__s != nullptr, "string::find_first_of(): received nullptr"); 3654 return __str_find_first_of<value_type, size_type, traits_type, npos> 3655 (data(), size(), __s, __pos, traits_type::length(__s)); 3656} 3657 3658template<class _CharT, class _Traits, class _Allocator> 3659inline 3660typename basic_string<_CharT, _Traits, _Allocator>::size_type 3661basic_string<_CharT, _Traits, _Allocator>::find_first_of(value_type __c, 3662 size_type __pos) const _NOEXCEPT 3663{ 3664 return find(__c, __pos); 3665} 3666 3667// find_last_of 3668 3669template<class _CharT, class _Traits, class _Allocator> 3670typename basic_string<_CharT, _Traits, _Allocator>::size_type 3671basic_string<_CharT, _Traits, _Allocator>::find_last_of(const value_type* __s, 3672 size_type __pos, 3673 size_type __n) const _NOEXCEPT 3674{ 3675 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::find_last_of(): received nullptr"); 3676 return __str_find_last_of<value_type, size_type, traits_type, npos> 3677 (data(), size(), __s, __pos, __n); 3678} 3679 3680template<class _CharT, class _Traits, class _Allocator> 3681inline 3682typename basic_string<_CharT, _Traits, _Allocator>::size_type 3683basic_string<_CharT, _Traits, _Allocator>::find_last_of(const basic_string& __str, 3684 size_type __pos) const _NOEXCEPT 3685{ 3686 return __str_find_last_of<value_type, size_type, traits_type, npos> 3687 (data(), size(), __str.data(), __pos, __str.size()); 3688} 3689 3690template<class _CharT, class _Traits, class _Allocator> 3691template <class _Tp> 3692__enable_if_t 3693< 3694 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3695 typename basic_string<_CharT, _Traits, _Allocator>::size_type 3696> 3697basic_string<_CharT, _Traits, _Allocator>::find_last_of(const _Tp& __t, 3698 size_type __pos) const _NOEXCEPT 3699{ 3700 __self_view __sv = __t; 3701 return __str_find_last_of<value_type, size_type, traits_type, npos> 3702 (data(), size(), __sv.data(), __pos, __sv.size()); 3703} 3704 3705template<class _CharT, class _Traits, class _Allocator> 3706inline 3707typename basic_string<_CharT, _Traits, _Allocator>::size_type 3708basic_string<_CharT, _Traits, _Allocator>::find_last_of(const value_type* __s, 3709 size_type __pos) const _NOEXCEPT 3710{ 3711 _LIBCPP_ASSERT(__s != nullptr, "string::find_last_of(): received nullptr"); 3712 return __str_find_last_of<value_type, size_type, traits_type, npos> 3713 (data(), size(), __s, __pos, traits_type::length(__s)); 3714} 3715 3716template<class _CharT, class _Traits, class _Allocator> 3717inline 3718typename basic_string<_CharT, _Traits, _Allocator>::size_type 3719basic_string<_CharT, _Traits, _Allocator>::find_last_of(value_type __c, 3720 size_type __pos) const _NOEXCEPT 3721{ 3722 return rfind(__c, __pos); 3723} 3724 3725// find_first_not_of 3726 3727template<class _CharT, class _Traits, class _Allocator> 3728typename basic_string<_CharT, _Traits, _Allocator>::size_type 3729basic_string<_CharT, _Traits, _Allocator>::find_first_not_of(const value_type* __s, 3730 size_type __pos, 3731 size_type __n) const _NOEXCEPT 3732{ 3733 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::find_first_not_of(): received nullptr"); 3734 return __str_find_first_not_of<value_type, size_type, traits_type, npos> 3735 (data(), size(), __s, __pos, __n); 3736} 3737 3738template<class _CharT, class _Traits, class _Allocator> 3739inline 3740typename basic_string<_CharT, _Traits, _Allocator>::size_type 3741basic_string<_CharT, _Traits, _Allocator>::find_first_not_of(const basic_string& __str, 3742 size_type __pos) const _NOEXCEPT 3743{ 3744 return __str_find_first_not_of<value_type, size_type, traits_type, npos> 3745 (data(), size(), __str.data(), __pos, __str.size()); 3746} 3747 3748template<class _CharT, class _Traits, class _Allocator> 3749template <class _Tp> 3750__enable_if_t 3751< 3752 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3753 typename basic_string<_CharT, _Traits, _Allocator>::size_type 3754> 3755basic_string<_CharT, _Traits, _Allocator>::find_first_not_of(const _Tp& __t, 3756 size_type __pos) const _NOEXCEPT 3757{ 3758 __self_view __sv = __t; 3759 return __str_find_first_not_of<value_type, size_type, traits_type, npos> 3760 (data(), size(), __sv.data(), __pos, __sv.size()); 3761} 3762 3763template<class _CharT, class _Traits, class _Allocator> 3764inline 3765typename basic_string<_CharT, _Traits, _Allocator>::size_type 3766basic_string<_CharT, _Traits, _Allocator>::find_first_not_of(const value_type* __s, 3767 size_type __pos) const _NOEXCEPT 3768{ 3769 _LIBCPP_ASSERT(__s != nullptr, "string::find_first_not_of(): received nullptr"); 3770 return __str_find_first_not_of<value_type, size_type, traits_type, npos> 3771 (data(), size(), __s, __pos, traits_type::length(__s)); 3772} 3773 3774template<class _CharT, class _Traits, class _Allocator> 3775inline 3776typename basic_string<_CharT, _Traits, _Allocator>::size_type 3777basic_string<_CharT, _Traits, _Allocator>::find_first_not_of(value_type __c, 3778 size_type __pos) const _NOEXCEPT 3779{ 3780 return __str_find_first_not_of<value_type, size_type, traits_type, npos> 3781 (data(), size(), __c, __pos); 3782} 3783 3784// find_last_not_of 3785 3786template<class _CharT, class _Traits, class _Allocator> 3787typename basic_string<_CharT, _Traits, _Allocator>::size_type 3788basic_string<_CharT, _Traits, _Allocator>::find_last_not_of(const value_type* __s, 3789 size_type __pos, 3790 size_type __n) const _NOEXCEPT 3791{ 3792 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::find_last_not_of(): received nullptr"); 3793 return __str_find_last_not_of<value_type, size_type, traits_type, npos> 3794 (data(), size(), __s, __pos, __n); 3795} 3796 3797template<class _CharT, class _Traits, class _Allocator> 3798inline 3799typename basic_string<_CharT, _Traits, _Allocator>::size_type 3800basic_string<_CharT, _Traits, _Allocator>::find_last_not_of(const basic_string& __str, 3801 size_type __pos) const _NOEXCEPT 3802{ 3803 return __str_find_last_not_of<value_type, size_type, traits_type, npos> 3804 (data(), size(), __str.data(), __pos, __str.size()); 3805} 3806 3807template<class _CharT, class _Traits, class _Allocator> 3808template <class _Tp> 3809__enable_if_t 3810< 3811 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3812 typename basic_string<_CharT, _Traits, _Allocator>::size_type 3813> 3814basic_string<_CharT, _Traits, _Allocator>::find_last_not_of(const _Tp& __t, 3815 size_type __pos) const _NOEXCEPT 3816{ 3817 __self_view __sv = __t; 3818 return __str_find_last_not_of<value_type, size_type, traits_type, npos> 3819 (data(), size(), __sv.data(), __pos, __sv.size()); 3820} 3821 3822template<class _CharT, class _Traits, class _Allocator> 3823inline 3824typename basic_string<_CharT, _Traits, _Allocator>::size_type 3825basic_string<_CharT, _Traits, _Allocator>::find_last_not_of(const value_type* __s, 3826 size_type __pos) const _NOEXCEPT 3827{ 3828 _LIBCPP_ASSERT(__s != nullptr, "string::find_last_not_of(): received nullptr"); 3829 return __str_find_last_not_of<value_type, size_type, traits_type, npos> 3830 (data(), size(), __s, __pos, traits_type::length(__s)); 3831} 3832 3833template<class _CharT, class _Traits, class _Allocator> 3834inline 3835typename basic_string<_CharT, _Traits, _Allocator>::size_type 3836basic_string<_CharT, _Traits, _Allocator>::find_last_not_of(value_type __c, 3837 size_type __pos) const _NOEXCEPT 3838{ 3839 return __str_find_last_not_of<value_type, size_type, traits_type, npos> 3840 (data(), size(), __c, __pos); 3841} 3842 3843// compare 3844 3845template <class _CharT, class _Traits, class _Allocator> 3846template <class _Tp> 3847__enable_if_t 3848< 3849 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3850 int 3851> 3852basic_string<_CharT, _Traits, _Allocator>::compare(const _Tp& __t) const _NOEXCEPT 3853{ 3854 __self_view __sv = __t; 3855 size_t __lhs_sz = size(); 3856 size_t __rhs_sz = __sv.size(); 3857 int __result = traits_type::compare(data(), __sv.data(), 3858 _VSTD::min(__lhs_sz, __rhs_sz)); 3859 if (__result != 0) 3860 return __result; 3861 if (__lhs_sz < __rhs_sz) 3862 return -1; 3863 if (__lhs_sz > __rhs_sz) 3864 return 1; 3865 return 0; 3866} 3867 3868template <class _CharT, class _Traits, class _Allocator> 3869inline 3870int 3871basic_string<_CharT, _Traits, _Allocator>::compare(const basic_string& __str) const _NOEXCEPT 3872{ 3873 return compare(__self_view(__str)); 3874} 3875 3876template <class _CharT, class _Traits, class _Allocator> 3877int 3878basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1, 3879 size_type __n1, 3880 const value_type* __s, 3881 size_type __n2) const 3882{ 3883 _LIBCPP_ASSERT(__n2 == 0 || __s != nullptr, "string::compare(): received nullptr"); 3884 size_type __sz = size(); 3885 if (__pos1 > __sz || __n2 == npos) 3886 this->__throw_out_of_range(); 3887 size_type __rlen = _VSTD::min(__n1, __sz - __pos1); 3888 int __r = traits_type::compare(data() + __pos1, __s, _VSTD::min(__rlen, __n2)); 3889 if (__r == 0) 3890 { 3891 if (__rlen < __n2) 3892 __r = -1; 3893 else if (__rlen > __n2) 3894 __r = 1; 3895 } 3896 return __r; 3897} 3898 3899template <class _CharT, class _Traits, class _Allocator> 3900template <class _Tp> 3901__enable_if_t 3902< 3903 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3904 int 3905> 3906basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1, 3907 size_type __n1, 3908 const _Tp& __t) const 3909{ 3910 __self_view __sv = __t; 3911 return compare(__pos1, __n1, __sv.data(), __sv.size()); 3912} 3913 3914template <class _CharT, class _Traits, class _Allocator> 3915inline 3916int 3917basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1, 3918 size_type __n1, 3919 const basic_string& __str) const 3920{ 3921 return compare(__pos1, __n1, __str.data(), __str.size()); 3922} 3923 3924template <class _CharT, class _Traits, class _Allocator> 3925template <class _Tp> 3926__enable_if_t 3927< 3928 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value 3929 && !__is_same_uncvref<_Tp, basic_string<_CharT, _Traits, _Allocator> >::value, 3930 int 3931> 3932basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1, 3933 size_type __n1, 3934 const _Tp& __t, 3935 size_type __pos2, 3936 size_type __n2) const 3937{ 3938 __self_view __sv = __t; 3939 return __self_view(*this).substr(__pos1, __n1).compare(__sv.substr(__pos2, __n2)); 3940} 3941 3942template <class _CharT, class _Traits, class _Allocator> 3943int 3944basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1, 3945 size_type __n1, 3946 const basic_string& __str, 3947 size_type __pos2, 3948 size_type __n2) const 3949{ 3950 return compare(__pos1, __n1, __self_view(__str), __pos2, __n2); 3951} 3952 3953template <class _CharT, class _Traits, class _Allocator> 3954int 3955basic_string<_CharT, _Traits, _Allocator>::compare(const value_type* __s) const _NOEXCEPT 3956{ 3957 _LIBCPP_ASSERT(__s != nullptr, "string::compare(): received nullptr"); 3958 return compare(0, npos, __s, traits_type::length(__s)); 3959} 3960 3961template <class _CharT, class _Traits, class _Allocator> 3962int 3963basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1, 3964 size_type __n1, 3965 const value_type* __s) const 3966{ 3967 _LIBCPP_ASSERT(__s != nullptr, "string::compare(): received nullptr"); 3968 return compare(__pos1, __n1, __s, traits_type::length(__s)); 3969} 3970 3971// __invariants 3972 3973template<class _CharT, class _Traits, class _Allocator> 3974inline 3975bool 3976basic_string<_CharT, _Traits, _Allocator>::__invariants() const 3977{ 3978 if (size() > capacity()) 3979 return false; 3980 if (capacity() < __min_cap - 1) 3981 return false; 3982 if (data() == nullptr) 3983 return false; 3984 if (data()[size()] != value_type()) 3985 return false; 3986 return true; 3987} 3988 3989// __clear_and_shrink 3990 3991template<class _CharT, class _Traits, class _Allocator> 3992inline 3993void 3994basic_string<_CharT, _Traits, _Allocator>::__clear_and_shrink() _NOEXCEPT 3995{ 3996 clear(); 3997 if(__is_long()) 3998 { 3999 __alloc_traits::deallocate(__alloc(), __get_long_pointer(), capacity() + 1); 4000 __set_long_cap(0); 4001 __set_short_size(0); 4002 traits_type::assign(*__get_short_pointer(), value_type()); 4003 } 4004} 4005 4006// operator== 4007 4008template<class _CharT, class _Traits, class _Allocator> 4009inline _LIBCPP_INLINE_VISIBILITY 4010bool 4011operator==(const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4012 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4013{ 4014 size_t __lhs_sz = __lhs.size(); 4015 return __lhs_sz == __rhs.size() && _Traits::compare(__lhs.data(), 4016 __rhs.data(), 4017 __lhs_sz) == 0; 4018} 4019 4020template<class _Allocator> 4021inline _LIBCPP_INLINE_VISIBILITY 4022bool 4023operator==(const basic_string<char, char_traits<char>, _Allocator>& __lhs, 4024 const basic_string<char, char_traits<char>, _Allocator>& __rhs) _NOEXCEPT 4025{ 4026 size_t __lhs_sz = __lhs.size(); 4027 if (__lhs_sz != __rhs.size()) 4028 return false; 4029 const char* __lp = __lhs.data(); 4030 const char* __rp = __rhs.data(); 4031 if (__lhs.__is_long()) 4032 return char_traits<char>::compare(__lp, __rp, __lhs_sz) == 0; 4033 for (; __lhs_sz != 0; --__lhs_sz, ++__lp, ++__rp) 4034 if (*__lp != *__rp) 4035 return false; 4036 return true; 4037} 4038 4039template<class _CharT, class _Traits, class _Allocator> 4040inline _LIBCPP_INLINE_VISIBILITY 4041bool 4042operator==(const _CharT* __lhs, 4043 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4044{ 4045 typedef basic_string<_CharT, _Traits, _Allocator> _String; 4046 _LIBCPP_ASSERT(__lhs != nullptr, "operator==(char*, basic_string): received nullptr"); 4047 size_t __lhs_len = _Traits::length(__lhs); 4048 if (__lhs_len != __rhs.size()) return false; 4049 return __rhs.compare(0, _String::npos, __lhs, __lhs_len) == 0; 4050} 4051 4052template<class _CharT, class _Traits, class _Allocator> 4053inline _LIBCPP_INLINE_VISIBILITY 4054bool 4055operator==(const basic_string<_CharT,_Traits,_Allocator>& __lhs, 4056 const _CharT* __rhs) _NOEXCEPT 4057{ 4058 typedef basic_string<_CharT, _Traits, _Allocator> _String; 4059 _LIBCPP_ASSERT(__rhs != nullptr, "operator==(basic_string, char*): received nullptr"); 4060 size_t __rhs_len = _Traits::length(__rhs); 4061 if (__rhs_len != __lhs.size()) return false; 4062 return __lhs.compare(0, _String::npos, __rhs, __rhs_len) == 0; 4063} 4064 4065template<class _CharT, class _Traits, class _Allocator> 4066inline _LIBCPP_INLINE_VISIBILITY 4067bool 4068operator!=(const basic_string<_CharT,_Traits,_Allocator>& __lhs, 4069 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4070{ 4071 return !(__lhs == __rhs); 4072} 4073 4074template<class _CharT, class _Traits, class _Allocator> 4075inline _LIBCPP_INLINE_VISIBILITY 4076bool 4077operator!=(const _CharT* __lhs, 4078 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4079{ 4080 return !(__lhs == __rhs); 4081} 4082 4083template<class _CharT, class _Traits, class _Allocator> 4084inline _LIBCPP_INLINE_VISIBILITY 4085bool 4086operator!=(const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4087 const _CharT* __rhs) _NOEXCEPT 4088{ 4089 return !(__lhs == __rhs); 4090} 4091 4092// operator< 4093 4094template<class _CharT, class _Traits, class _Allocator> 4095inline _LIBCPP_INLINE_VISIBILITY 4096bool 4097operator< (const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4098 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4099{ 4100 return __lhs.compare(__rhs) < 0; 4101} 4102 4103template<class _CharT, class _Traits, class _Allocator> 4104inline _LIBCPP_INLINE_VISIBILITY 4105bool 4106operator< (const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4107 const _CharT* __rhs) _NOEXCEPT 4108{ 4109 return __lhs.compare(__rhs) < 0; 4110} 4111 4112template<class _CharT, class _Traits, class _Allocator> 4113inline _LIBCPP_INLINE_VISIBILITY 4114bool 4115operator< (const _CharT* __lhs, 4116 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4117{ 4118 return __rhs.compare(__lhs) > 0; 4119} 4120 4121// operator> 4122 4123template<class _CharT, class _Traits, class _Allocator> 4124inline _LIBCPP_INLINE_VISIBILITY 4125bool 4126operator> (const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4127 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4128{ 4129 return __rhs < __lhs; 4130} 4131 4132template<class _CharT, class _Traits, class _Allocator> 4133inline _LIBCPP_INLINE_VISIBILITY 4134bool 4135operator> (const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4136 const _CharT* __rhs) _NOEXCEPT 4137{ 4138 return __rhs < __lhs; 4139} 4140 4141template<class _CharT, class _Traits, class _Allocator> 4142inline _LIBCPP_INLINE_VISIBILITY 4143bool 4144operator> (const _CharT* __lhs, 4145 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4146{ 4147 return __rhs < __lhs; 4148} 4149 4150// operator<= 4151 4152template<class _CharT, class _Traits, class _Allocator> 4153inline _LIBCPP_INLINE_VISIBILITY 4154bool 4155operator<=(const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4156 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4157{ 4158 return !(__rhs < __lhs); 4159} 4160 4161template<class _CharT, class _Traits, class _Allocator> 4162inline _LIBCPP_INLINE_VISIBILITY 4163bool 4164operator<=(const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4165 const _CharT* __rhs) _NOEXCEPT 4166{ 4167 return !(__rhs < __lhs); 4168} 4169 4170template<class _CharT, class _Traits, class _Allocator> 4171inline _LIBCPP_INLINE_VISIBILITY 4172bool 4173operator<=(const _CharT* __lhs, 4174 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4175{ 4176 return !(__rhs < __lhs); 4177} 4178 4179// operator>= 4180 4181template<class _CharT, class _Traits, class _Allocator> 4182inline _LIBCPP_INLINE_VISIBILITY 4183bool 4184operator>=(const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4185 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4186{ 4187 return !(__lhs < __rhs); 4188} 4189 4190template<class _CharT, class _Traits, class _Allocator> 4191inline _LIBCPP_INLINE_VISIBILITY 4192bool 4193operator>=(const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4194 const _CharT* __rhs) _NOEXCEPT 4195{ 4196 return !(__lhs < __rhs); 4197} 4198 4199template<class _CharT, class _Traits, class _Allocator> 4200inline _LIBCPP_INLINE_VISIBILITY 4201bool 4202operator>=(const _CharT* __lhs, 4203 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4204{ 4205 return !(__lhs < __rhs); 4206} 4207 4208// operator + 4209 4210template<class _CharT, class _Traits, class _Allocator> 4211basic_string<_CharT, _Traits, _Allocator> 4212operator+(const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4213 const basic_string<_CharT, _Traits, _Allocator>& __rhs) 4214{ 4215 basic_string<_CharT, _Traits, _Allocator> __r(__lhs.get_allocator()); 4216 typename basic_string<_CharT, _Traits, _Allocator>::size_type __lhs_sz = __lhs.size(); 4217 typename basic_string<_CharT, _Traits, _Allocator>::size_type __rhs_sz = __rhs.size(); 4218 __r.__init(__lhs.data(), __lhs_sz, __lhs_sz + __rhs_sz); 4219 __r.append(__rhs.data(), __rhs_sz); 4220 return __r; 4221} 4222 4223template<class _CharT, class _Traits, class _Allocator> 4224basic_string<_CharT, _Traits, _Allocator> 4225operator+(const _CharT* __lhs , const basic_string<_CharT,_Traits,_Allocator>& __rhs) 4226{ 4227 basic_string<_CharT, _Traits, _Allocator> __r(__rhs.get_allocator()); 4228 typename basic_string<_CharT, _Traits, _Allocator>::size_type __lhs_sz = _Traits::length(__lhs); 4229 typename basic_string<_CharT, _Traits, _Allocator>::size_type __rhs_sz = __rhs.size(); 4230 __r.__init(__lhs, __lhs_sz, __lhs_sz + __rhs_sz); 4231 __r.append(__rhs.data(), __rhs_sz); 4232 return __r; 4233} 4234 4235template<class _CharT, class _Traits, class _Allocator> 4236basic_string<_CharT, _Traits, _Allocator> 4237operator+(_CharT __lhs, const basic_string<_CharT,_Traits,_Allocator>& __rhs) 4238{ 4239 basic_string<_CharT, _Traits, _Allocator> __r(__rhs.get_allocator()); 4240 typename basic_string<_CharT, _Traits, _Allocator>::size_type __rhs_sz = __rhs.size(); 4241 __r.__init(&__lhs, 1, 1 + __rhs_sz); 4242 __r.append(__rhs.data(), __rhs_sz); 4243 return __r; 4244} 4245 4246template<class _CharT, class _Traits, class _Allocator> 4247inline 4248basic_string<_CharT, _Traits, _Allocator> 4249operator+(const basic_string<_CharT, _Traits, _Allocator>& __lhs, const _CharT* __rhs) 4250{ 4251 basic_string<_CharT, _Traits, _Allocator> __r(__lhs.get_allocator()); 4252 typename basic_string<_CharT, _Traits, _Allocator>::size_type __lhs_sz = __lhs.size(); 4253 typename basic_string<_CharT, _Traits, _Allocator>::size_type __rhs_sz = _Traits::length(__rhs); 4254 __r.__init(__lhs.data(), __lhs_sz, __lhs_sz + __rhs_sz); 4255 __r.append(__rhs, __rhs_sz); 4256 return __r; 4257} 4258 4259template<class _CharT, class _Traits, class _Allocator> 4260basic_string<_CharT, _Traits, _Allocator> 4261operator+(const basic_string<_CharT, _Traits, _Allocator>& __lhs, _CharT __rhs) 4262{ 4263 basic_string<_CharT, _Traits, _Allocator> __r(__lhs.get_allocator()); 4264 typename basic_string<_CharT, _Traits, _Allocator>::size_type __lhs_sz = __lhs.size(); 4265 __r.__init(__lhs.data(), __lhs_sz, __lhs_sz + 1); 4266 __r.push_back(__rhs); 4267 return __r; 4268} 4269 4270#ifndef _LIBCPP_CXX03_LANG 4271 4272template<class _CharT, class _Traits, class _Allocator> 4273inline _LIBCPP_INLINE_VISIBILITY 4274basic_string<_CharT, _Traits, _Allocator> 4275operator+(basic_string<_CharT, _Traits, _Allocator>&& __lhs, const basic_string<_CharT, _Traits, _Allocator>& __rhs) 4276{ 4277 return _VSTD::move(__lhs.append(__rhs)); 4278} 4279 4280template<class _CharT, class _Traits, class _Allocator> 4281inline _LIBCPP_INLINE_VISIBILITY 4282basic_string<_CharT, _Traits, _Allocator> 4283operator+(const basic_string<_CharT, _Traits, _Allocator>& __lhs, basic_string<_CharT, _Traits, _Allocator>&& __rhs) 4284{ 4285 return _VSTD::move(__rhs.insert(0, __lhs)); 4286} 4287 4288template<class _CharT, class _Traits, class _Allocator> 4289inline _LIBCPP_INLINE_VISIBILITY 4290basic_string<_CharT, _Traits, _Allocator> 4291operator+(basic_string<_CharT, _Traits, _Allocator>&& __lhs, basic_string<_CharT, _Traits, _Allocator>&& __rhs) 4292{ 4293 return _VSTD::move(__lhs.append(__rhs)); 4294} 4295 4296template<class _CharT, class _Traits, class _Allocator> 4297inline _LIBCPP_INLINE_VISIBILITY 4298basic_string<_CharT, _Traits, _Allocator> 4299operator+(const _CharT* __lhs , basic_string<_CharT,_Traits,_Allocator>&& __rhs) 4300{ 4301 return _VSTD::move(__rhs.insert(0, __lhs)); 4302} 4303 4304template<class _CharT, class _Traits, class _Allocator> 4305inline _LIBCPP_INLINE_VISIBILITY 4306basic_string<_CharT, _Traits, _Allocator> 4307operator+(_CharT __lhs, basic_string<_CharT,_Traits,_Allocator>&& __rhs) 4308{ 4309 __rhs.insert(__rhs.begin(), __lhs); 4310 return _VSTD::move(__rhs); 4311} 4312 4313template<class _CharT, class _Traits, class _Allocator> 4314inline _LIBCPP_INLINE_VISIBILITY 4315basic_string<_CharT, _Traits, _Allocator> 4316operator+(basic_string<_CharT, _Traits, _Allocator>&& __lhs, const _CharT* __rhs) 4317{ 4318 return _VSTD::move(__lhs.append(__rhs)); 4319} 4320 4321template<class _CharT, class _Traits, class _Allocator> 4322inline _LIBCPP_INLINE_VISIBILITY 4323basic_string<_CharT, _Traits, _Allocator> 4324operator+(basic_string<_CharT, _Traits, _Allocator>&& __lhs, _CharT __rhs) 4325{ 4326 __lhs.push_back(__rhs); 4327 return _VSTD::move(__lhs); 4328} 4329 4330#endif // _LIBCPP_CXX03_LANG 4331 4332// swap 4333 4334template<class _CharT, class _Traits, class _Allocator> 4335inline _LIBCPP_INLINE_VISIBILITY 4336void 4337swap(basic_string<_CharT, _Traits, _Allocator>& __lhs, 4338 basic_string<_CharT, _Traits, _Allocator>& __rhs) 4339 _NOEXCEPT_(_NOEXCEPT_(__lhs.swap(__rhs))) 4340{ 4341 __lhs.swap(__rhs); 4342} 4343 4344_LIBCPP_FUNC_VIS int stoi (const string& __str, size_t* __idx = nullptr, int __base = 10); 4345_LIBCPP_FUNC_VIS long stol (const string& __str, size_t* __idx = nullptr, int __base = 10); 4346_LIBCPP_FUNC_VIS unsigned long stoul (const string& __str, size_t* __idx = nullptr, int __base = 10); 4347_LIBCPP_FUNC_VIS long long stoll (const string& __str, size_t* __idx = nullptr, int __base = 10); 4348_LIBCPP_FUNC_VIS unsigned long long stoull(const string& __str, size_t* __idx = nullptr, int __base = 10); 4349 4350_LIBCPP_FUNC_VIS float stof (const string& __str, size_t* __idx = nullptr); 4351_LIBCPP_FUNC_VIS double stod (const string& __str, size_t* __idx = nullptr); 4352_LIBCPP_FUNC_VIS long double stold(const string& __str, size_t* __idx = nullptr); 4353 4354_LIBCPP_FUNC_VIS string to_string(int __val); 4355_LIBCPP_FUNC_VIS string to_string(unsigned __val); 4356_LIBCPP_FUNC_VIS string to_string(long __val); 4357_LIBCPP_FUNC_VIS string to_string(unsigned long __val); 4358_LIBCPP_FUNC_VIS string to_string(long long __val); 4359_LIBCPP_FUNC_VIS string to_string(unsigned long long __val); 4360_LIBCPP_FUNC_VIS string to_string(float __val); 4361_LIBCPP_FUNC_VIS string to_string(double __val); 4362_LIBCPP_FUNC_VIS string to_string(long double __val); 4363 4364#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 4365_LIBCPP_FUNC_VIS int stoi (const wstring& __str, size_t* __idx = nullptr, int __base = 10); 4366_LIBCPP_FUNC_VIS long stol (const wstring& __str, size_t* __idx = nullptr, int __base = 10); 4367_LIBCPP_FUNC_VIS unsigned long stoul (const wstring& __str, size_t* __idx = nullptr, int __base = 10); 4368_LIBCPP_FUNC_VIS long long stoll (const wstring& __str, size_t* __idx = nullptr, int __base = 10); 4369_LIBCPP_FUNC_VIS unsigned long long stoull(const wstring& __str, size_t* __idx = nullptr, int __base = 10); 4370 4371_LIBCPP_FUNC_VIS float stof (const wstring& __str, size_t* __idx = nullptr); 4372_LIBCPP_FUNC_VIS double stod (const wstring& __str, size_t* __idx = nullptr); 4373_LIBCPP_FUNC_VIS long double stold(const wstring& __str, size_t* __idx = nullptr); 4374 4375_LIBCPP_FUNC_VIS wstring to_wstring(int __val); 4376_LIBCPP_FUNC_VIS wstring to_wstring(unsigned __val); 4377_LIBCPP_FUNC_VIS wstring to_wstring(long __val); 4378_LIBCPP_FUNC_VIS wstring to_wstring(unsigned long __val); 4379_LIBCPP_FUNC_VIS wstring to_wstring(long long __val); 4380_LIBCPP_FUNC_VIS wstring to_wstring(unsigned long long __val); 4381_LIBCPP_FUNC_VIS wstring to_wstring(float __val); 4382_LIBCPP_FUNC_VIS wstring to_wstring(double __val); 4383_LIBCPP_FUNC_VIS wstring to_wstring(long double __val); 4384#endif // _LIBCPP_HAS_NO_WIDE_CHARACTERS 4385 4386template<class _CharT, class _Traits, class _Allocator> 4387_LIBCPP_TEMPLATE_DATA_VIS 4388const typename basic_string<_CharT, _Traits, _Allocator>::size_type 4389 basic_string<_CharT, _Traits, _Allocator>::npos; 4390 4391template <class _CharT, class _Allocator> 4392struct _LIBCPP_TEMPLATE_VIS 4393 hash<basic_string<_CharT, char_traits<_CharT>, _Allocator> > 4394 : public unary_function< 4395 basic_string<_CharT, char_traits<_CharT>, _Allocator>, size_t> 4396{ 4397 size_t 4398 operator()(const basic_string<_CharT, char_traits<_CharT>, _Allocator>& __val) const _NOEXCEPT 4399 { return __do_string_hash(__val.data(), __val.data() + __val.size()); } 4400}; 4401 4402 4403template<class _CharT, class _Traits, class _Allocator> 4404basic_ostream<_CharT, _Traits>& 4405operator<<(basic_ostream<_CharT, _Traits>& __os, 4406 const basic_string<_CharT, _Traits, _Allocator>& __str); 4407 4408template<class _CharT, class _Traits, class _Allocator> 4409basic_istream<_CharT, _Traits>& 4410operator>>(basic_istream<_CharT, _Traits>& __is, 4411 basic_string<_CharT, _Traits, _Allocator>& __str); 4412 4413template<class _CharT, class _Traits, class _Allocator> 4414basic_istream<_CharT, _Traits>& 4415getline(basic_istream<_CharT, _Traits>& __is, 4416 basic_string<_CharT, _Traits, _Allocator>& __str, _CharT __dlm); 4417 4418template<class _CharT, class _Traits, class _Allocator> 4419inline _LIBCPP_INLINE_VISIBILITY 4420basic_istream<_CharT, _Traits>& 4421getline(basic_istream<_CharT, _Traits>& __is, 4422 basic_string<_CharT, _Traits, _Allocator>& __str); 4423 4424template<class _CharT, class _Traits, class _Allocator> 4425inline _LIBCPP_INLINE_VISIBILITY 4426basic_istream<_CharT, _Traits>& 4427getline(basic_istream<_CharT, _Traits>&& __is, 4428 basic_string<_CharT, _Traits, _Allocator>& __str, _CharT __dlm); 4429 4430template<class _CharT, class _Traits, class _Allocator> 4431inline _LIBCPP_INLINE_VISIBILITY 4432basic_istream<_CharT, _Traits>& 4433getline(basic_istream<_CharT, _Traits>&& __is, 4434 basic_string<_CharT, _Traits, _Allocator>& __str); 4435 4436#if _LIBCPP_STD_VER > 17 4437template <class _CharT, class _Traits, class _Allocator, class _Up> 4438inline _LIBCPP_INLINE_VISIBILITY 4439 typename basic_string<_CharT, _Traits, _Allocator>::size_type 4440 erase(basic_string<_CharT, _Traits, _Allocator>& __str, const _Up& __v) { 4441 auto __old_size = __str.size(); 4442 __str.erase(_VSTD::remove(__str.begin(), __str.end(), __v), __str.end()); 4443 return __old_size - __str.size(); 4444} 4445 4446template <class _CharT, class _Traits, class _Allocator, class _Predicate> 4447inline _LIBCPP_INLINE_VISIBILITY 4448 typename basic_string<_CharT, _Traits, _Allocator>::size_type 4449 erase_if(basic_string<_CharT, _Traits, _Allocator>& __str, 4450 _Predicate __pred) { 4451 auto __old_size = __str.size(); 4452 __str.erase(_VSTD::remove_if(__str.begin(), __str.end(), __pred), 4453 __str.end()); 4454 return __old_size - __str.size(); 4455} 4456#endif 4457 4458#if _LIBCPP_DEBUG_LEVEL == 2 4459 4460template<class _CharT, class _Traits, class _Allocator> 4461bool 4462basic_string<_CharT, _Traits, _Allocator>::__dereferenceable(const const_iterator* __i) const 4463{ 4464 return this->data() <= _VSTD::__to_address(__i->base()) && 4465 _VSTD::__to_address(__i->base()) < this->data() + this->size(); 4466} 4467 4468template<class _CharT, class _Traits, class _Allocator> 4469bool 4470basic_string<_CharT, _Traits, _Allocator>::__decrementable(const const_iterator* __i) const 4471{ 4472 return this->data() < _VSTD::__to_address(__i->base()) && 4473 _VSTD::__to_address(__i->base()) <= this->data() + this->size(); 4474} 4475 4476template<class _CharT, class _Traits, class _Allocator> 4477bool 4478basic_string<_CharT, _Traits, _Allocator>::__addable(const const_iterator* __i, ptrdiff_t __n) const 4479{ 4480 const value_type* __p = _VSTD::__to_address(__i->base()) + __n; 4481 return this->data() <= __p && __p <= this->data() + this->size(); 4482} 4483 4484template<class _CharT, class _Traits, class _Allocator> 4485bool 4486basic_string<_CharT, _Traits, _Allocator>::__subscriptable(const const_iterator* __i, ptrdiff_t __n) const 4487{ 4488 const value_type* __p = _VSTD::__to_address(__i->base()) + __n; 4489 return this->data() <= __p && __p < this->data() + this->size(); 4490} 4491 4492#endif // _LIBCPP_DEBUG_LEVEL == 2 4493 4494#if _LIBCPP_STD_VER > 11 4495// Literal suffixes for basic_string [basic.string.literals] 4496inline namespace literals 4497{ 4498 inline namespace string_literals 4499 { 4500 inline _LIBCPP_INLINE_VISIBILITY 4501 basic_string<char> operator "" s( const char *__str, size_t __len ) 4502 { 4503 return basic_string<char> (__str, __len); 4504 } 4505 4506#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 4507 inline _LIBCPP_INLINE_VISIBILITY 4508 basic_string<wchar_t> operator "" s( const wchar_t *__str, size_t __len ) 4509 { 4510 return basic_string<wchar_t> (__str, __len); 4511 } 4512#endif 4513 4514#ifndef _LIBCPP_HAS_NO_CHAR8_T 4515 inline _LIBCPP_INLINE_VISIBILITY 4516 basic_string<char8_t> operator "" s(const char8_t *__str, size_t __len) _NOEXCEPT 4517 { 4518 return basic_string<char8_t> (__str, __len); 4519 } 4520#endif 4521 4522 inline _LIBCPP_INLINE_VISIBILITY 4523 basic_string<char16_t> operator "" s( const char16_t *__str, size_t __len ) 4524 { 4525 return basic_string<char16_t> (__str, __len); 4526 } 4527 4528 inline _LIBCPP_INLINE_VISIBILITY 4529 basic_string<char32_t> operator "" s( const char32_t *__str, size_t __len ) 4530 { 4531 return basic_string<char32_t> (__str, __len); 4532 } 4533 } // namespace string_literals 4534} // namespace literals 4535#endif 4536 4537_LIBCPP_END_NAMESPACE_STD 4538 4539_LIBCPP_POP_MACROS 4540 4541#endif // _LIBCPP_STRING 4542