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 template<class Operation> 162 constexpr void resize_and_overwrite(size_type n, Operation op); // since C++23 163 164 void reserve(size_type res_arg); 165 void reserve(); // deprecated in C++20 166 void shrink_to_fit(); 167 void clear() noexcept; 168 bool empty() const noexcept; 169 170 const_reference operator[](size_type pos) const; 171 reference operator[](size_type pos); 172 173 const_reference at(size_type n) const; 174 reference at(size_type n); 175 176 basic_string& operator+=(const basic_string& str); 177 template <class T> 178 basic_string& operator+=(const T& t); // C++17 179 basic_string& operator+=(const value_type* s); 180 basic_string& operator+=(value_type c); 181 basic_string& operator+=(initializer_list<value_type>); 182 183 basic_string& append(const basic_string& str); 184 template <class T> 185 basic_string& append(const T& t); // C++17 186 basic_string& append(const basic_string& str, size_type pos, size_type n=npos); //C++14 187 template <class T> 188 basic_string& append(const T& t, size_type pos, size_type n=npos); // C++17 189 basic_string& append(const value_type* s, size_type n); 190 basic_string& append(const value_type* s); 191 basic_string& append(size_type n, value_type c); 192 template<class InputIterator> 193 basic_string& append(InputIterator first, InputIterator last); 194 basic_string& append(initializer_list<value_type>); 195 196 void push_back(value_type c); 197 void pop_back(); 198 reference front(); 199 const_reference front() const; 200 reference back(); 201 const_reference back() const; 202 203 basic_string& assign(const basic_string& str); 204 template <class T> 205 basic_string& assign(const T& t); // C++17 206 basic_string& assign(basic_string&& str); 207 basic_string& assign(const basic_string& str, size_type pos, size_type n=npos); // C++14 208 template <class T> 209 basic_string& assign(const T& t, size_type pos, size_type n=npos); // C++17 210 basic_string& assign(const value_type* s, size_type n); 211 basic_string& assign(const value_type* s); 212 basic_string& assign(size_type n, value_type c); 213 template<class InputIterator> 214 basic_string& assign(InputIterator first, InputIterator last); 215 basic_string& assign(initializer_list<value_type>); 216 217 basic_string& insert(size_type pos1, const basic_string& str); 218 template <class T> 219 basic_string& insert(size_type pos1, const T& t); 220 basic_string& insert(size_type pos1, const basic_string& str, 221 size_type pos2, size_type n); 222 template <class T> 223 basic_string& insert(size_type pos1, const T& t, size_type pos2, size_type n); // C++17 224 basic_string& insert(size_type pos, const value_type* s, size_type n=npos); //C++14 225 basic_string& insert(size_type pos, const value_type* s); 226 basic_string& insert(size_type pos, size_type n, value_type c); 227 iterator insert(const_iterator p, value_type c); 228 iterator insert(const_iterator p, size_type n, value_type c); 229 template<class InputIterator> 230 iterator insert(const_iterator p, InputIterator first, InputIterator last); 231 iterator insert(const_iterator p, initializer_list<value_type>); 232 233 basic_string& erase(size_type pos = 0, size_type n = npos); 234 iterator erase(const_iterator position); 235 iterator erase(const_iterator first, const_iterator last); 236 237 basic_string& replace(size_type pos1, size_type n1, const basic_string& str); 238 template <class T> 239 basic_string& replace(size_type pos1, size_type n1, const T& t); // C++17 240 basic_string& replace(size_type pos1, size_type n1, const basic_string& str, 241 size_type pos2, size_type n2=npos); // C++14 242 template <class T> 243 basic_string& replace(size_type pos1, size_type n1, const T& t, 244 size_type pos2, size_type n); // C++17 245 basic_string& replace(size_type pos, size_type n1, const value_type* s, size_type n2); 246 basic_string& replace(size_type pos, size_type n1, const value_type* s); 247 basic_string& replace(size_type pos, size_type n1, size_type n2, value_type c); 248 basic_string& replace(const_iterator i1, const_iterator i2, const basic_string& str); 249 template <class T> 250 basic_string& replace(const_iterator i1, const_iterator i2, const T& t); // C++17 251 basic_string& replace(const_iterator i1, const_iterator i2, const value_type* s, size_type n); 252 basic_string& replace(const_iterator i1, const_iterator i2, const value_type* s); 253 basic_string& replace(const_iterator i1, const_iterator i2, size_type n, value_type c); 254 template<class InputIterator> 255 basic_string& replace(const_iterator i1, const_iterator i2, InputIterator j1, InputIterator j2); 256 basic_string& replace(const_iterator i1, const_iterator i2, initializer_list<value_type>); 257 258 size_type copy(value_type* s, size_type n, size_type pos = 0) const; 259 basic_string substr(size_type pos = 0, size_type n = npos) const; 260 261 void swap(basic_string& str) 262 noexcept(allocator_traits<allocator_type>::propagate_on_container_swap::value || 263 allocator_traits<allocator_type>::is_always_equal::value); // C++17 264 265 const value_type* c_str() const noexcept; 266 const value_type* data() const noexcept; 267 value_type* data() noexcept; // C++17 268 269 allocator_type get_allocator() const noexcept; 270 271 size_type find(const basic_string& str, size_type pos = 0) const noexcept; 272 template <class T> 273 size_type find(const T& t, size_type pos = 0) const noexcept; // C++17, noexcept as an extension 274 size_type find(const value_type* s, size_type pos, size_type n) const noexcept; 275 size_type find(const value_type* s, size_type pos = 0) const noexcept; 276 size_type find(value_type c, size_type pos = 0) const noexcept; 277 278 size_type rfind(const basic_string& str, size_type pos = npos) const noexcept; 279 template <class T> 280 size_type rfind(const T& t, size_type pos = npos) const noexcept; // C++17, noexcept as an extension 281 size_type rfind(const value_type* s, size_type pos, size_type n) const noexcept; 282 size_type rfind(const value_type* s, size_type pos = npos) const noexcept; 283 size_type rfind(value_type c, size_type pos = npos) const noexcept; 284 285 size_type find_first_of(const basic_string& str, size_type pos = 0) const noexcept; 286 template <class T> 287 size_type find_first_of(const T& t, size_type pos = 0) const noexcept; // C++17, noexcept as an extension 288 size_type find_first_of(const value_type* s, size_type pos, size_type n) const noexcept; 289 size_type find_first_of(const value_type* s, size_type pos = 0) const noexcept; 290 size_type find_first_of(value_type c, size_type pos = 0) const noexcept; 291 292 size_type find_last_of(const basic_string& str, size_type pos = npos) const noexcept; 293 template <class T> 294 size_type find_last_of(const T& t, size_type pos = npos) const noexcept noexcept; // C++17, noexcept as an extension 295 size_type find_last_of(const value_type* s, size_type pos, size_type n) const noexcept; 296 size_type find_last_of(const value_type* s, size_type pos = npos) const noexcept; 297 size_type find_last_of(value_type c, size_type pos = npos) const noexcept; 298 299 size_type find_first_not_of(const basic_string& str, size_type pos = 0) const noexcept; 300 template <class T> 301 size_type find_first_not_of(const T& t, size_type pos = 0) const noexcept; // C++17, noexcept as an extension 302 size_type find_first_not_of(const value_type* s, size_type pos, size_type n) const noexcept; 303 size_type find_first_not_of(const value_type* s, size_type pos = 0) const noexcept; 304 size_type find_first_not_of(value_type c, size_type pos = 0) const noexcept; 305 306 size_type find_last_not_of(const basic_string& str, size_type pos = npos) const noexcept; 307 template <class T> 308 size_type find_last_not_of(const T& t, size_type pos = npos) const noexcept; // C++17, noexcept as an extension 309 size_type find_last_not_of(const value_type* s, size_type pos, size_type n) const noexcept; 310 size_type find_last_not_of(const value_type* s, size_type pos = npos) const noexcept; 311 size_type find_last_not_of(value_type c, size_type pos = npos) const noexcept; 312 313 int compare(const basic_string& str) const noexcept; 314 template <class T> 315 int compare(const T& t) const noexcept; // C++17, noexcept as an extension 316 int compare(size_type pos1, size_type n1, const basic_string& str) const; 317 template <class T> 318 int compare(size_type pos1, size_type n1, const T& t) const; // C++17 319 int compare(size_type pos1, size_type n1, const basic_string& str, 320 size_type pos2, size_type n2=npos) const; // C++14 321 template <class T> 322 int compare(size_type pos1, size_type n1, const T& t, 323 size_type pos2, size_type n2=npos) const; // C++17 324 int compare(const value_type* s) const noexcept; 325 int compare(size_type pos1, size_type n1, const value_type* s) const; 326 int compare(size_type pos1, size_type n1, const value_type* s, size_type n2) const; 327 328 bool starts_with(basic_string_view<charT, traits> sv) const noexcept; // C++20 329 bool starts_with(charT c) const noexcept; // C++20 330 bool starts_with(const charT* s) const; // C++20 331 bool ends_with(basic_string_view<charT, traits> sv) const noexcept; // C++20 332 bool ends_with(charT c) const noexcept; // C++20 333 bool ends_with(const charT* s) const; // C++20 334 335 constexpr bool contains(basic_string_view<charT, traits> sv) const noexcept; // C++2b 336 constexpr bool contains(charT c) const noexcept; // C++2b 337 constexpr bool contains(const charT* s) const; // C++2b 338 339 bool __invariants() const; 340}; 341 342template<class InputIterator, 343 class Allocator = allocator<typename iterator_traits<InputIterator>::value_type>> 344basic_string(InputIterator, InputIterator, Allocator = Allocator()) 345 -> basic_string<typename iterator_traits<InputIterator>::value_type, 346 char_traits<typename iterator_traits<InputIterator>::value_type>, 347 Allocator>; // C++17 348 349template<class charT, class traits, class Allocator> 350basic_string<charT, traits, Allocator> 351operator+(const basic_string<charT, traits, Allocator>& lhs, 352 const basic_string<charT, traits, Allocator>& rhs); 353 354template<class charT, class traits, class Allocator> 355basic_string<charT, traits, Allocator> 356operator+(const charT* lhs , const basic_string<charT,traits,Allocator>&rhs); 357 358template<class charT, class traits, class Allocator> 359basic_string<charT, traits, Allocator> 360operator+(charT lhs, const basic_string<charT,traits,Allocator>& rhs); 361 362template<class charT, class traits, class Allocator> 363basic_string<charT, traits, Allocator> 364operator+(const basic_string<charT, traits, Allocator>& lhs, const charT* rhs); 365 366template<class charT, class traits, class Allocator> 367basic_string<charT, traits, Allocator> 368operator+(const basic_string<charT, traits, Allocator>& lhs, charT rhs); 369 370template<class charT, class traits, class Allocator> 371bool operator==(const basic_string<charT, traits, Allocator>& lhs, 372 const basic_string<charT, traits, Allocator>& rhs) noexcept; 373 374template<class charT, class traits, class Allocator> 375bool operator==(const charT* lhs, const basic_string<charT, traits, Allocator>& rhs) noexcept; 376 377template<class charT, class traits, class Allocator> 378bool operator==(const basic_string<charT,traits,Allocator>& lhs, const charT* rhs) noexcept; 379 380template<class charT, class traits, class Allocator> 381bool operator!=(const basic_string<charT,traits,Allocator>& lhs, 382 const basic_string<charT, traits, Allocator>& rhs) noexcept; 383 384template<class charT, class traits, class Allocator> 385bool operator!=(const charT* lhs, const basic_string<charT, traits, Allocator>& rhs) noexcept; 386 387template<class charT, class traits, class Allocator> 388bool operator!=(const basic_string<charT, traits, Allocator>& lhs, const charT* rhs) noexcept; 389 390template<class charT, class traits, class Allocator> 391bool operator< (const basic_string<charT, traits, Allocator>& lhs, 392 const basic_string<charT, traits, Allocator>& rhs) noexcept; 393 394template<class charT, class traits, class Allocator> 395bool operator< (const basic_string<charT, traits, Allocator>& lhs, const charT* rhs) noexcept; 396 397template<class charT, class traits, class Allocator> 398bool operator< (const charT* lhs, const basic_string<charT, traits, Allocator>& rhs) noexcept; 399 400template<class charT, class traits, class Allocator> 401bool operator> (const basic_string<charT, traits, Allocator>& lhs, 402 const basic_string<charT, traits, Allocator>& rhs) noexcept; 403 404template<class charT, class traits, class Allocator> 405bool operator> (const basic_string<charT, traits, Allocator>& lhs, const charT* rhs) noexcept; 406 407template<class charT, class traits, class Allocator> 408bool operator> (const charT* lhs, const basic_string<charT, traits, Allocator>& rhs) noexcept; 409 410template<class charT, class traits, class Allocator> 411bool operator<=(const basic_string<charT, traits, Allocator>& lhs, 412 const basic_string<charT, traits, Allocator>& rhs) noexcept; 413 414template<class charT, class traits, class Allocator> 415bool operator<=(const basic_string<charT, traits, Allocator>& lhs, const charT* rhs) noexcept; 416 417template<class charT, class traits, class Allocator> 418bool operator<=(const charT* lhs, const basic_string<charT, traits, Allocator>& rhs) noexcept; 419 420template<class charT, class traits, class Allocator> 421bool operator>=(const basic_string<charT, traits, Allocator>& lhs, 422 const basic_string<charT, traits, Allocator>& rhs) noexcept; 423 424template<class charT, class traits, class Allocator> 425bool operator>=(const basic_string<charT, traits, Allocator>& lhs, const charT* rhs) noexcept; 426 427template<class charT, class traits, class Allocator> 428bool operator>=(const charT* lhs, const basic_string<charT, traits, Allocator>& rhs) noexcept; 429 430template<class charT, class traits, class Allocator> 431void swap(basic_string<charT, traits, Allocator>& lhs, 432 basic_string<charT, traits, Allocator>& rhs) 433 noexcept(noexcept(lhs.swap(rhs))); 434 435template<class charT, class traits, class Allocator> 436basic_istream<charT, traits>& 437operator>>(basic_istream<charT, traits>& is, basic_string<charT, traits, Allocator>& str); 438 439template<class charT, class traits, class Allocator> 440basic_ostream<charT, traits>& 441operator<<(basic_ostream<charT, traits>& os, const basic_string<charT, traits, Allocator>& str); 442 443template<class charT, class traits, class Allocator> 444basic_istream<charT, traits>& 445getline(basic_istream<charT, traits>& is, basic_string<charT, traits, Allocator>& str, 446 charT delim); 447 448template<class charT, class traits, class Allocator> 449basic_istream<charT, traits>& 450getline(basic_istream<charT, traits>& is, basic_string<charT, traits, Allocator>& str); 451 452template<class charT, class traits, class Allocator, class U> 453typename basic_string<charT, traits, Allocator>::size_type 454erase(basic_string<charT, traits, Allocator>& c, const U& value); // C++20 455template<class charT, class traits, class Allocator, class Predicate> 456typename basic_string<charT, traits, Allocator>::size_type 457erase_if(basic_string<charT, traits, Allocator>& c, Predicate pred); // C++20 458 459typedef basic_string<char> string; 460typedef basic_string<wchar_t> wstring; 461typedef basic_string<char8_t> u8string; // C++20 462typedef basic_string<char16_t> u16string; 463typedef basic_string<char32_t> u32string; 464 465int stoi (const string& str, size_t* idx = nullptr, int base = 10); 466long stol (const string& str, size_t* idx = nullptr, int base = 10); 467unsigned long stoul (const string& str, size_t* idx = nullptr, int base = 10); 468long long stoll (const string& str, size_t* idx = nullptr, int base = 10); 469unsigned long long stoull(const string& str, size_t* idx = nullptr, int base = 10); 470 471float stof (const string& str, size_t* idx = nullptr); 472double stod (const string& str, size_t* idx = nullptr); 473long double stold(const string& str, size_t* idx = nullptr); 474 475string to_string(int val); 476string to_string(unsigned val); 477string to_string(long val); 478string to_string(unsigned long val); 479string to_string(long long val); 480string to_string(unsigned long long val); 481string to_string(float val); 482string to_string(double val); 483string to_string(long double val); 484 485int stoi (const wstring& str, size_t* idx = nullptr, int base = 10); 486long stol (const wstring& str, size_t* idx = nullptr, int base = 10); 487unsigned long stoul (const wstring& str, size_t* idx = nullptr, int base = 10); 488long long stoll (const wstring& str, size_t* idx = nullptr, int base = 10); 489unsigned long long stoull(const wstring& str, size_t* idx = nullptr, int base = 10); 490 491float stof (const wstring& str, size_t* idx = nullptr); 492double stod (const wstring& str, size_t* idx = nullptr); 493long double stold(const wstring& str, size_t* idx = nullptr); 494 495wstring to_wstring(int val); 496wstring to_wstring(unsigned val); 497wstring to_wstring(long val); 498wstring to_wstring(unsigned long val); 499wstring to_wstring(long long val); 500wstring to_wstring(unsigned long long val); 501wstring to_wstring(float val); 502wstring to_wstring(double val); 503wstring to_wstring(long double val); 504 505template <> struct hash<string>; 506template <> struct hash<u8string>; // C++20 507template <> struct hash<u16string>; 508template <> struct hash<u32string>; 509template <> struct hash<wstring>; 510 511basic_string<char> operator "" s( const char *str, size_t len ); // C++14 512basic_string<wchar_t> operator "" s( const wchar_t *str, size_t len ); // C++14 513basic_string<char8_t> operator "" s( const char8_t *str, size_t len ); // C++20 514basic_string<char16_t> operator "" s( const char16_t *str, size_t len ); // C++14 515basic_string<char32_t> operator "" s( const char32_t *str, size_t len ); // C++14 516 517} // std 518 519*/ 520 521#include <__algorithm/max.h> 522#include <__algorithm/min.h> 523#include <__algorithm/remove.h> 524#include <__algorithm/remove_if.h> 525#include <__assert> // all public C++ headers provide the assertion handler 526#include <__config> 527#include <__debug> 528#include <__format/enable_insertable.h> 529#include <__ios/fpos.h> 530#include <__iterator/wrap_iter.h> 531#include <__memory/allocate_at_least.h> 532#include <__utility/auto_cast.h> 533#include <__utility/move.h> 534#include <__utility/swap.h> 535#include <compare> 536#include <cstdio> // EOF 537#include <cstdlib> 538#include <cstring> 539#include <initializer_list> 540#include <iosfwd> 541#include <iterator> 542#include <memory> 543#include <stdexcept> 544#include <string_view> 545#include <type_traits> 546#include <version> 547 548// TODO: remove these headers 549#include <__functional/binary_function.h> 550#include <__functional/invoke.h> 551#include <__functional/operations.h> 552#include <__functional/reference_wrapper.h> 553#include <__functional/unary_function.h> 554#include <__functional/weak_result_type.h> 555#include <new> 556#include <typeinfo> 557 558#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 559# include <cwchar> 560#endif 561 562#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS 563# include <cstdint> 564#endif 565 566#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 567# pragma GCC system_header 568#endif 569 570_LIBCPP_PUSH_MACROS 571#include <__undef_macros> 572 573 574_LIBCPP_BEGIN_NAMESPACE_STD 575 576// basic_string 577 578template<class _CharT, class _Traits, class _Allocator> 579basic_string<_CharT, _Traits, _Allocator> 580operator+(const basic_string<_CharT, _Traits, _Allocator>& __x, 581 const basic_string<_CharT, _Traits, _Allocator>& __y); 582 583template<class _CharT, class _Traits, class _Allocator> 584basic_string<_CharT, _Traits, _Allocator> 585operator+(const _CharT* __x, const basic_string<_CharT,_Traits,_Allocator>& __y); 586 587template<class _CharT, class _Traits, class _Allocator> 588basic_string<_CharT, _Traits, _Allocator> 589operator+(_CharT __x, const basic_string<_CharT,_Traits,_Allocator>& __y); 590 591template<class _CharT, class _Traits, class _Allocator> 592inline _LIBCPP_INLINE_VISIBILITY 593basic_string<_CharT, _Traits, _Allocator> 594operator+(const basic_string<_CharT, _Traits, _Allocator>& __x, const _CharT* __y); 595 596template<class _CharT, class _Traits, class _Allocator> 597basic_string<_CharT, _Traits, _Allocator> 598operator+(const basic_string<_CharT, _Traits, _Allocator>& __x, _CharT __y); 599 600_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS string operator+<char, char_traits<char>, allocator<char> >(char const*, string const&)) 601 602template <class _Iter> 603struct __string_is_trivial_iterator : public false_type {}; 604 605template <class _Tp> 606struct __string_is_trivial_iterator<_Tp*> 607 : public is_arithmetic<_Tp> {}; 608 609template <class _Iter> 610struct __string_is_trivial_iterator<__wrap_iter<_Iter> > 611 : public __string_is_trivial_iterator<_Iter> {}; 612 613template <class _CharT, class _Traits, class _Tp> 614struct __can_be_converted_to_string_view : public _BoolConstant< 615 is_convertible<const _Tp&, basic_string_view<_CharT, _Traits> >::value && 616 !is_convertible<const _Tp&, const _CharT*>::value 617 > {}; 618 619#ifndef _LIBCPP_HAS_NO_CHAR8_T 620typedef basic_string<char8_t> u8string; 621#endif 622 623#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS 624typedef basic_string<char16_t> u16string; 625typedef basic_string<char32_t> u32string; 626#endif 627 628struct __uninitialized_size_tag {}; 629 630template<class _CharT, class _Traits, class _Allocator> 631class 632 _LIBCPP_TEMPLATE_VIS 633#ifndef _LIBCPP_HAS_NO_CHAR8_T 634 _LIBCPP_PREFERRED_NAME(u8string) 635#endif 636#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS 637 _LIBCPP_PREFERRED_NAME(u16string) 638 _LIBCPP_PREFERRED_NAME(u32string) 639#endif 640 basic_string 641{ 642public: 643 typedef basic_string __self; 644 typedef basic_string_view<_CharT, _Traits> __self_view; 645 typedef _Traits traits_type; 646 typedef _CharT value_type; 647 typedef _Allocator allocator_type; 648 typedef allocator_traits<allocator_type> __alloc_traits; 649 typedef typename __alloc_traits::size_type size_type; 650 typedef typename __alloc_traits::difference_type difference_type; 651 typedef value_type& reference; 652 typedef const value_type& const_reference; 653 typedef typename __alloc_traits::pointer pointer; 654 typedef typename __alloc_traits::const_pointer const_pointer; 655 656 static_assert((!is_array<value_type>::value), "Character type of basic_string must not be an array"); 657 static_assert(( is_standard_layout<value_type>::value), "Character type of basic_string must be standard-layout"); 658 static_assert(( is_trivial<value_type>::value), "Character type of basic_string must be trivial"); 659 static_assert(( is_same<_CharT, typename traits_type::char_type>::value), 660 "traits_type::char_type must be the same type as CharT"); 661 static_assert(( is_same<typename allocator_type::value_type, value_type>::value), 662 "Allocator::value_type must be same type as value_type"); 663 664 typedef __wrap_iter<pointer> iterator; 665 typedef __wrap_iter<const_pointer> const_iterator; 666 typedef _VSTD::reverse_iterator<iterator> reverse_iterator; 667 typedef _VSTD::reverse_iterator<const_iterator> const_reverse_iterator; 668 669private: 670 671#ifdef _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT 672 673 struct __long 674 { 675 pointer __data_; 676 size_type __size_; 677 size_type __cap_; 678 }; 679 680#ifdef _LIBCPP_BIG_ENDIAN 681 static const size_type __short_mask = 0x01; 682 static const size_type __long_mask = 0x1ul; 683#else // _LIBCPP_BIG_ENDIAN 684 static const size_type __short_mask = 0x80; 685 static const size_type __long_mask = ~(size_type(~0) >> 1); 686#endif // _LIBCPP_BIG_ENDIAN 687 688 enum {__min_cap = (sizeof(__long) - 1)/sizeof(value_type) > 2 ? 689 (sizeof(__long) - 1)/sizeof(value_type) : 2}; 690 691 struct __short 692 { 693 value_type __data_[__min_cap]; 694 unsigned char __padding[sizeof(value_type) - 1]; 695 unsigned char __size_; 696 }; 697 698#else 699 700 struct __long 701 { 702 size_type __cap_; 703 size_type __size_; 704 pointer __data_; 705 }; 706 707#ifdef _LIBCPP_BIG_ENDIAN 708 static const size_type __short_mask = 0x80; 709 static const size_type __long_mask = ~(size_type(~0) >> 1); 710#else // _LIBCPP_BIG_ENDIAN 711 static const size_type __short_mask = 0x01; 712 static const size_type __long_mask = 0x1ul; 713#endif // _LIBCPP_BIG_ENDIAN 714 715 enum {__min_cap = (sizeof(__long) - 1)/sizeof(value_type) > 2 ? 716 (sizeof(__long) - 1)/sizeof(value_type) : 2}; 717 718 struct __short 719 { 720 union 721 { 722 unsigned char __size_; 723 value_type __lx; 724 }; 725 value_type __data_[__min_cap]; 726 }; 727 728#endif // _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT 729 730 union __ulx{__long __lx; __short __lxx;}; 731 732 enum {__n_words = sizeof(__ulx) / sizeof(size_type)}; 733 734 struct __raw 735 { 736 size_type __words[__n_words]; 737 }; 738 739 struct __rep 740 { 741 union 742 { 743 __long __l; 744 __short __s; 745 __raw __r; 746 }; 747 }; 748 749 __compressed_pair<__rep, allocator_type> __r_; 750 751 // Construct a string with the given allocator and enough storage to hold `__size` characters, but 752 // don't initialize the characters. The contents of the string, including the null terminator, must be 753 // initialized separately. 754 _LIBCPP_HIDE_FROM_ABI explicit basic_string(__uninitialized_size_tag, size_type __size, const allocator_type& __a) 755 : __r_(__default_init_tag(), __a) { 756 if (__size > max_size()) 757 __throw_length_error(); 758 if (__fits_in_sso(__size)) { 759 __zero(); 760 __set_short_size(__size); 761 } else { 762 auto __capacity = __recommend(__size) + 1; 763 auto __allocation = __alloc_traits::allocate(__alloc(), __capacity); 764 __set_long_cap(__capacity); 765 __set_long_pointer(__allocation); 766 __set_long_size(__size); 767 } 768 std::__debug_db_insert_c(this); 769 } 770 771public: 772 _LIBCPP_TEMPLATE_DATA_VIS 773 static const size_type npos = -1; 774 775 _LIBCPP_INLINE_VISIBILITY basic_string() 776 _NOEXCEPT_(is_nothrow_default_constructible<allocator_type>::value); 777 778 _LIBCPP_INLINE_VISIBILITY explicit basic_string(const allocator_type& __a) 779#if _LIBCPP_STD_VER <= 14 780 _NOEXCEPT_(is_nothrow_copy_constructible<allocator_type>::value); 781#else 782 _NOEXCEPT; 783#endif 784 785 basic_string(const basic_string& __str); 786 basic_string(const basic_string& __str, const allocator_type& __a); 787 788#ifndef _LIBCPP_CXX03_LANG 789 _LIBCPP_INLINE_VISIBILITY 790 basic_string(basic_string&& __str) 791#if _LIBCPP_STD_VER <= 14 792 _NOEXCEPT_(is_nothrow_move_constructible<allocator_type>::value); 793#else 794 _NOEXCEPT; 795#endif 796 797 _LIBCPP_INLINE_VISIBILITY 798 basic_string(basic_string&& __str, const allocator_type& __a); 799#endif // _LIBCPP_CXX03_LANG 800 801 template <class = __enable_if_t<__is_allocator<_Allocator>::value, nullptr_t> > 802 _LIBCPP_INLINE_VISIBILITY 803 basic_string(const _CharT* __s) : __r_(__default_init_tag(), __default_init_tag()) { 804 _LIBCPP_ASSERT(__s != nullptr, "basic_string(const char*) detected nullptr"); 805 __init(__s, traits_type::length(__s)); 806 _VSTD::__debug_db_insert_c(this); 807 } 808 809 template <class = __enable_if_t<__is_allocator<_Allocator>::value, nullptr_t> > 810 _LIBCPP_INLINE_VISIBILITY 811 basic_string(const _CharT* __s, const _Allocator& __a); 812 813#if _LIBCPP_STD_VER > 20 814 basic_string(nullptr_t) = delete; 815#endif 816 817 _LIBCPP_INLINE_VISIBILITY 818 basic_string(const _CharT* __s, size_type __n); 819 _LIBCPP_INLINE_VISIBILITY 820 basic_string(const _CharT* __s, size_type __n, const _Allocator& __a); 821 _LIBCPP_INLINE_VISIBILITY 822 basic_string(size_type __n, _CharT __c); 823 824 template <class = __enable_if_t<__is_allocator<_Allocator>::value, nullptr_t> > 825 _LIBCPP_INLINE_VISIBILITY 826 basic_string(size_type __n, _CharT __c, const _Allocator& __a); 827 828 basic_string(const basic_string& __str, size_type __pos, size_type __n, 829 const _Allocator& __a = _Allocator()); 830 _LIBCPP_INLINE_VISIBILITY 831 basic_string(const basic_string& __str, size_type __pos, 832 const _Allocator& __a = _Allocator()); 833 834 template<class _Tp, class = __enable_if_t<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value && !__is_same_uncvref<_Tp, basic_string>::value> > 835 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 836 basic_string(const _Tp& __t, size_type __pos, size_type __n, 837 const allocator_type& __a = allocator_type()); 838 839 template<class _Tp, class = __enable_if_t<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value && 840 !__is_same_uncvref<_Tp, basic_string>::value> > 841 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 842 explicit basic_string(const _Tp& __t); 843 844 template<class _Tp, class = __enable_if_t<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value && !__is_same_uncvref<_Tp, basic_string>::value> > 845 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 846 explicit basic_string(const _Tp& __t, const allocator_type& __a); 847 848 template<class _InputIterator, class = __enable_if_t<__is_cpp17_input_iterator<_InputIterator>::value> > 849 _LIBCPP_INLINE_VISIBILITY 850 basic_string(_InputIterator __first, _InputIterator __last); 851 template<class _InputIterator, class = __enable_if_t<__is_cpp17_input_iterator<_InputIterator>::value> > 852 _LIBCPP_INLINE_VISIBILITY 853 basic_string(_InputIterator __first, _InputIterator __last, const allocator_type& __a); 854#ifndef _LIBCPP_CXX03_LANG 855 _LIBCPP_INLINE_VISIBILITY 856 basic_string(initializer_list<_CharT> __il); 857 _LIBCPP_INLINE_VISIBILITY 858 basic_string(initializer_list<_CharT> __il, const _Allocator& __a); 859#endif // _LIBCPP_CXX03_LANG 860 861 inline ~basic_string(); 862 863 _LIBCPP_INLINE_VISIBILITY 864 operator __self_view() const _NOEXCEPT { return __self_view(data(), size()); } 865 866 basic_string& operator=(const basic_string& __str); 867 868 template <class _Tp, class = __enable_if_t<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value && !__is_same_uncvref<_Tp, basic_string>::value> > 869 basic_string& operator=(const _Tp& __t) 870 {__self_view __sv = __t; return assign(__sv);} 871 872#ifndef _LIBCPP_CXX03_LANG 873 _LIBCPP_INLINE_VISIBILITY 874 basic_string& operator=(basic_string&& __str) 875 _NOEXCEPT_((__noexcept_move_assign_container<_Allocator, __alloc_traits>::value)); 876 _LIBCPP_INLINE_VISIBILITY 877 basic_string& operator=(initializer_list<value_type> __il) {return assign(__il.begin(), __il.size());} 878#endif 879 _LIBCPP_INLINE_VISIBILITY basic_string& operator=(const value_type* __s) {return assign(__s);} 880#if _LIBCPP_STD_VER > 20 881 basic_string& operator=(nullptr_t) = delete; 882#endif 883 basic_string& operator=(value_type __c); 884 885#if _LIBCPP_DEBUG_LEVEL == 2 886 _LIBCPP_INLINE_VISIBILITY 887 iterator begin() _NOEXCEPT 888 {return iterator(this, __get_pointer());} 889 _LIBCPP_INLINE_VISIBILITY 890 const_iterator begin() const _NOEXCEPT 891 {return const_iterator(this, __get_pointer());} 892 _LIBCPP_INLINE_VISIBILITY 893 iterator end() _NOEXCEPT 894 {return iterator(this, __get_pointer() + size());} 895 _LIBCPP_INLINE_VISIBILITY 896 const_iterator end() const _NOEXCEPT 897 {return const_iterator(this, __get_pointer() + size());} 898#else 899 _LIBCPP_INLINE_VISIBILITY 900 iterator begin() _NOEXCEPT 901 {return iterator(__get_pointer());} 902 _LIBCPP_INLINE_VISIBILITY 903 const_iterator begin() const _NOEXCEPT 904 {return const_iterator(__get_pointer());} 905 _LIBCPP_INLINE_VISIBILITY 906 iterator end() _NOEXCEPT 907 {return iterator(__get_pointer() + size());} 908 _LIBCPP_INLINE_VISIBILITY 909 const_iterator end() const _NOEXCEPT 910 {return const_iterator(__get_pointer() + size());} 911#endif // _LIBCPP_DEBUG_LEVEL == 2 912 _LIBCPP_INLINE_VISIBILITY 913 reverse_iterator rbegin() _NOEXCEPT 914 {return reverse_iterator(end());} 915 _LIBCPP_INLINE_VISIBILITY 916 const_reverse_iterator rbegin() const _NOEXCEPT 917 {return const_reverse_iterator(end());} 918 _LIBCPP_INLINE_VISIBILITY 919 reverse_iterator rend() _NOEXCEPT 920 {return reverse_iterator(begin());} 921 _LIBCPP_INLINE_VISIBILITY 922 const_reverse_iterator rend() const _NOEXCEPT 923 {return const_reverse_iterator(begin());} 924 925 _LIBCPP_INLINE_VISIBILITY 926 const_iterator cbegin() const _NOEXCEPT 927 {return begin();} 928 _LIBCPP_INLINE_VISIBILITY 929 const_iterator cend() const _NOEXCEPT 930 {return end();} 931 _LIBCPP_INLINE_VISIBILITY 932 const_reverse_iterator crbegin() const _NOEXCEPT 933 {return rbegin();} 934 _LIBCPP_INLINE_VISIBILITY 935 const_reverse_iterator crend() const _NOEXCEPT 936 {return rend();} 937 938 _LIBCPP_INLINE_VISIBILITY size_type size() const _NOEXCEPT 939 {return __is_long() ? __get_long_size() : __get_short_size();} 940 _LIBCPP_INLINE_VISIBILITY size_type length() const _NOEXCEPT {return size();} 941 _LIBCPP_INLINE_VISIBILITY size_type max_size() const _NOEXCEPT; 942 _LIBCPP_INLINE_VISIBILITY size_type capacity() const _NOEXCEPT 943 {return (__is_long() ? __get_long_cap() 944 : static_cast<size_type>(__min_cap)) - 1;} 945 946 void resize(size_type __n, value_type __c); 947 _LIBCPP_INLINE_VISIBILITY void resize(size_type __n) {resize(__n, value_type());} 948 949 void reserve(size_type __requested_capacity); 950 951#if _LIBCPP_STD_VER > 20 952 template <class _Op> 953 _LIBCPP_HIDE_FROM_ABI constexpr 954 void resize_and_overwrite(size_type __n, _Op __op) { 955 __resize_default_init(__n); 956 __erase_to_end(_VSTD::move(__op)(data(), _LIBCPP_AUTO_CAST(__n))); 957 } 958#endif 959 960 _LIBCPP_INLINE_VISIBILITY void __resize_default_init(size_type __n); 961 962 _LIBCPP_DEPRECATED_IN_CXX20 _LIBCPP_INLINE_VISIBILITY 963 void reserve() _NOEXCEPT {shrink_to_fit();} 964 _LIBCPP_INLINE_VISIBILITY 965 void shrink_to_fit() _NOEXCEPT; 966 _LIBCPP_INLINE_VISIBILITY 967 void clear() _NOEXCEPT; 968 _LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY 969 bool empty() const _NOEXCEPT {return size() == 0;} 970 971 _LIBCPP_INLINE_VISIBILITY const_reference operator[](size_type __pos) const _NOEXCEPT; 972 _LIBCPP_INLINE_VISIBILITY reference operator[](size_type __pos) _NOEXCEPT; 973 974 const_reference at(size_type __n) const; 975 reference at(size_type __n); 976 977 _LIBCPP_INLINE_VISIBILITY basic_string& operator+=(const basic_string& __str) {return append(__str);} 978 979 template <class _Tp> 980 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 981 __enable_if_t 982 < 983 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value 984 && !__is_same_uncvref<_Tp, basic_string >::value, 985 basic_string& 986 > 987 operator+=(const _Tp& __t) {__self_view __sv = __t; return append(__sv);} 988 _LIBCPP_INLINE_VISIBILITY basic_string& operator+=(const value_type* __s) {return append(__s);} 989 _LIBCPP_INLINE_VISIBILITY basic_string& operator+=(value_type __c) {push_back(__c); return *this;} 990#ifndef _LIBCPP_CXX03_LANG 991 _LIBCPP_INLINE_VISIBILITY basic_string& operator+=(initializer_list<value_type> __il) {return append(__il);} 992#endif // _LIBCPP_CXX03_LANG 993 994 _LIBCPP_INLINE_VISIBILITY 995 basic_string& append(const basic_string& __str); 996 997 template <class _Tp> 998 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 999 __enable_if_t< 1000 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value 1001 && !__is_same_uncvref<_Tp, basic_string>::value, 1002 basic_string& 1003 > 1004 append(const _Tp& __t) { __self_view __sv = __t; return append(__sv.data(), __sv.size()); } 1005 basic_string& append(const basic_string& __str, size_type __pos, size_type __n=npos); 1006 1007 template <class _Tp> 1008 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1009 __enable_if_t 1010 < 1011 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value 1012 && !__is_same_uncvref<_Tp, basic_string>::value, 1013 basic_string& 1014 > 1015 append(const _Tp& __t, size_type __pos, size_type __n=npos); 1016 basic_string& append(const value_type* __s, size_type __n); 1017 basic_string& append(const value_type* __s); 1018 basic_string& append(size_type __n, value_type __c); 1019 1020 _LIBCPP_INLINE_VISIBILITY 1021 void __append_default_init(size_type __n); 1022 1023 template<class _InputIterator> 1024 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1025 __enable_if_t 1026 < 1027 __is_exactly_cpp17_input_iterator<_InputIterator>::value, 1028 basic_string& 1029 > 1030 _LIBCPP_INLINE_VISIBILITY 1031 append(_InputIterator __first, _InputIterator __last) { 1032 const basic_string __temp(__first, __last, __alloc()); 1033 append(__temp.data(), __temp.size()); 1034 return *this; 1035 } 1036 template<class _ForwardIterator> 1037 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1038 __enable_if_t 1039 < 1040 __is_cpp17_forward_iterator<_ForwardIterator>::value, 1041 basic_string& 1042 > 1043 _LIBCPP_INLINE_VISIBILITY 1044 append(_ForwardIterator __first, _ForwardIterator __last); 1045 1046#ifndef _LIBCPP_CXX03_LANG 1047 _LIBCPP_INLINE_VISIBILITY 1048 basic_string& append(initializer_list<value_type> __il) {return append(__il.begin(), __il.size());} 1049#endif // _LIBCPP_CXX03_LANG 1050 1051 void push_back(value_type __c); 1052 _LIBCPP_INLINE_VISIBILITY 1053 void pop_back(); 1054 _LIBCPP_INLINE_VISIBILITY reference front() _NOEXCEPT; 1055 _LIBCPP_INLINE_VISIBILITY const_reference front() const _NOEXCEPT; 1056 _LIBCPP_INLINE_VISIBILITY reference back() _NOEXCEPT; 1057 _LIBCPP_INLINE_VISIBILITY const_reference back() const _NOEXCEPT; 1058 1059 template <class _Tp> 1060 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1061 __enable_if_t 1062 < 1063 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1064 basic_string& 1065 > 1066 assign(const _Tp & __t) { __self_view __sv = __t; return assign(__sv.data(), __sv.size()); } 1067 _LIBCPP_INLINE_VISIBILITY 1068 basic_string& assign(const basic_string& __str) { return *this = __str; } 1069#ifndef _LIBCPP_CXX03_LANG 1070 _LIBCPP_INLINE_VISIBILITY 1071 basic_string& assign(basic_string&& __str) 1072 _NOEXCEPT_((__noexcept_move_assign_container<_Allocator, __alloc_traits>::value)) 1073 {*this = _VSTD::move(__str); return *this;} 1074#endif 1075 basic_string& assign(const basic_string& __str, size_type __pos, size_type __n=npos); 1076 template <class _Tp> 1077 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1078 __enable_if_t 1079 < 1080 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value 1081 && !__is_same_uncvref<_Tp, basic_string>::value, 1082 basic_string& 1083 > 1084 assign(const _Tp & __t, size_type __pos, size_type __n=npos); 1085 basic_string& assign(const value_type* __s, size_type __n); 1086 basic_string& assign(const value_type* __s); 1087 basic_string& assign(size_type __n, value_type __c); 1088 template<class _InputIterator> 1089 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1090 __enable_if_t 1091 < 1092 __is_exactly_cpp17_input_iterator<_InputIterator>::value, 1093 basic_string& 1094 > 1095 assign(_InputIterator __first, _InputIterator __last); 1096 template<class _ForwardIterator> 1097 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1098 __enable_if_t 1099 < 1100 __is_cpp17_forward_iterator<_ForwardIterator>::value, 1101 basic_string& 1102 > 1103 assign(_ForwardIterator __first, _ForwardIterator __last); 1104#ifndef _LIBCPP_CXX03_LANG 1105 _LIBCPP_INLINE_VISIBILITY 1106 basic_string& assign(initializer_list<value_type> __il) {return assign(__il.begin(), __il.size());} 1107#endif // _LIBCPP_CXX03_LANG 1108 1109 _LIBCPP_INLINE_VISIBILITY 1110 basic_string& insert(size_type __pos1, const basic_string& __str); 1111 1112 template <class _Tp> 1113 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1114 __enable_if_t 1115 < 1116 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1117 basic_string& 1118 > 1119 insert(size_type __pos1, const _Tp& __t) 1120 { __self_view __sv = __t; return insert(__pos1, __sv.data(), __sv.size()); } 1121 1122 template <class _Tp> 1123 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1124 __enable_if_t 1125 < 1126 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value && !__is_same_uncvref<_Tp, basic_string>::value, 1127 basic_string& 1128 > 1129 insert(size_type __pos1, const _Tp& __t, size_type __pos2, size_type __n=npos); 1130 basic_string& insert(size_type __pos1, const basic_string& __str, size_type __pos2, size_type __n=npos); 1131 basic_string& insert(size_type __pos, const value_type* __s, size_type __n); 1132 basic_string& insert(size_type __pos, const value_type* __s); 1133 basic_string& insert(size_type __pos, size_type __n, value_type __c); 1134 iterator insert(const_iterator __pos, value_type __c); 1135 _LIBCPP_INLINE_VISIBILITY 1136 iterator insert(const_iterator __pos, size_type __n, value_type __c); 1137 template<class _InputIterator> 1138 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1139 __enable_if_t 1140 < 1141 __is_exactly_cpp17_input_iterator<_InputIterator>::value, 1142 iterator 1143 > 1144 insert(const_iterator __pos, _InputIterator __first, _InputIterator __last); 1145 template<class _ForwardIterator> 1146 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1147 __enable_if_t 1148 < 1149 __is_cpp17_forward_iterator<_ForwardIterator>::value, 1150 iterator 1151 > 1152 insert(const_iterator __pos, _ForwardIterator __first, _ForwardIterator __last); 1153#ifndef _LIBCPP_CXX03_LANG 1154 _LIBCPP_INLINE_VISIBILITY 1155 iterator insert(const_iterator __pos, initializer_list<value_type> __il) 1156 {return insert(__pos, __il.begin(), __il.end());} 1157#endif // _LIBCPP_CXX03_LANG 1158 1159 basic_string& erase(size_type __pos = 0, size_type __n = npos); 1160 _LIBCPP_INLINE_VISIBILITY 1161 iterator erase(const_iterator __pos); 1162 _LIBCPP_INLINE_VISIBILITY 1163 iterator erase(const_iterator __first, const_iterator __last); 1164 1165 _LIBCPP_INLINE_VISIBILITY 1166 basic_string& replace(size_type __pos1, size_type __n1, const basic_string& __str); 1167 1168 template <class _Tp> 1169 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1170 __enable_if_t 1171 < 1172 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1173 basic_string& 1174 > 1175 replace(size_type __pos1, size_type __n1, const _Tp& __t) { __self_view __sv = __t; return replace(__pos1, __n1, __sv.data(), __sv.size()); } 1176 basic_string& replace(size_type __pos1, size_type __n1, const basic_string& __str, size_type __pos2, size_type __n2=npos); 1177 template <class _Tp> 1178 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1179 __enable_if_t 1180 < 1181 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value && !__is_same_uncvref<_Tp, basic_string>::value, 1182 basic_string& 1183 > 1184 replace(size_type __pos1, size_type __n1, const _Tp& __t, size_type __pos2, size_type __n2=npos); 1185 basic_string& replace(size_type __pos, size_type __n1, const value_type* __s, size_type __n2); 1186 basic_string& replace(size_type __pos, size_type __n1, const value_type* __s); 1187 basic_string& replace(size_type __pos, size_type __n1, size_type __n2, value_type __c); 1188 _LIBCPP_INLINE_VISIBILITY 1189 basic_string& replace(const_iterator __i1, const_iterator __i2, const basic_string& __str); 1190 1191 template <class _Tp> 1192 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1193 __enable_if_t 1194 < 1195 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1196 basic_string& 1197 > 1198 replace(const_iterator __i1, const_iterator __i2, const _Tp& __t) { __self_view __sv = __t; return replace(__i1 - begin(), __i2 - __i1, __sv); } 1199 1200 _LIBCPP_INLINE_VISIBILITY 1201 basic_string& replace(const_iterator __i1, const_iterator __i2, const value_type* __s, size_type __n); 1202 _LIBCPP_INLINE_VISIBILITY 1203 basic_string& replace(const_iterator __i1, const_iterator __i2, const value_type* __s); 1204 _LIBCPP_INLINE_VISIBILITY 1205 basic_string& replace(const_iterator __i1, const_iterator __i2, size_type __n, value_type __c); 1206 template<class _InputIterator> 1207 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1208 __enable_if_t 1209 < 1210 __is_cpp17_input_iterator<_InputIterator>::value, 1211 basic_string& 1212 > 1213 replace(const_iterator __i1, const_iterator __i2, _InputIterator __j1, _InputIterator __j2); 1214#ifndef _LIBCPP_CXX03_LANG 1215 _LIBCPP_INLINE_VISIBILITY 1216 basic_string& replace(const_iterator __i1, const_iterator __i2, initializer_list<value_type> __il) 1217 {return replace(__i1, __i2, __il.begin(), __il.end());} 1218#endif // _LIBCPP_CXX03_LANG 1219 1220 size_type copy(value_type* __s, size_type __n, size_type __pos = 0) const; 1221 _LIBCPP_INLINE_VISIBILITY 1222 basic_string substr(size_type __pos = 0, size_type __n = npos) const; 1223 1224 _LIBCPP_INLINE_VISIBILITY 1225 void swap(basic_string& __str) 1226#if _LIBCPP_STD_VER >= 14 1227 _NOEXCEPT; 1228#else 1229 _NOEXCEPT_(!__alloc_traits::propagate_on_container_swap::value || 1230 __is_nothrow_swappable<allocator_type>::value); 1231#endif 1232 1233 _LIBCPP_INLINE_VISIBILITY 1234 const value_type* c_str() const _NOEXCEPT {return data();} 1235 _LIBCPP_INLINE_VISIBILITY 1236 const value_type* data() const _NOEXCEPT {return _VSTD::__to_address(__get_pointer());} 1237#if _LIBCPP_STD_VER > 14 || defined(_LIBCPP_BUILDING_LIBRARY) 1238 _LIBCPP_INLINE_VISIBILITY 1239 value_type* data() _NOEXCEPT {return _VSTD::__to_address(__get_pointer());} 1240#endif 1241 1242 _LIBCPP_INLINE_VISIBILITY 1243 allocator_type get_allocator() const _NOEXCEPT {return __alloc();} 1244 1245 _LIBCPP_INLINE_VISIBILITY 1246 size_type find(const basic_string& __str, size_type __pos = 0) const _NOEXCEPT; 1247 1248 template <class _Tp> 1249 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1250 __enable_if_t 1251 < 1252 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1253 size_type 1254 > 1255 find(const _Tp& __t, size_type __pos = 0) const _NOEXCEPT; 1256 size_type find(const value_type* __s, size_type __pos, size_type __n) const _NOEXCEPT; 1257 _LIBCPP_INLINE_VISIBILITY 1258 size_type find(const value_type* __s, size_type __pos = 0) const _NOEXCEPT; 1259 size_type find(value_type __c, size_type __pos = 0) const _NOEXCEPT; 1260 1261 _LIBCPP_INLINE_VISIBILITY 1262 size_type rfind(const basic_string& __str, size_type __pos = npos) const _NOEXCEPT; 1263 1264 template <class _Tp> 1265 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1266 __enable_if_t 1267 < 1268 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1269 size_type 1270 > 1271 rfind(const _Tp& __t, size_type __pos = npos) const _NOEXCEPT; 1272 size_type rfind(const value_type* __s, size_type __pos, size_type __n) const _NOEXCEPT; 1273 _LIBCPP_INLINE_VISIBILITY 1274 size_type rfind(const value_type* __s, size_type __pos = npos) const _NOEXCEPT; 1275 size_type rfind(value_type __c, size_type __pos = npos) const _NOEXCEPT; 1276 1277 _LIBCPP_INLINE_VISIBILITY 1278 size_type find_first_of(const basic_string& __str, size_type __pos = 0) const _NOEXCEPT; 1279 1280 template <class _Tp> 1281 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1282 __enable_if_t 1283 < 1284 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1285 size_type 1286 > 1287 find_first_of(const _Tp& __t, size_type __pos = 0) const _NOEXCEPT; 1288 size_type find_first_of(const value_type* __s, size_type __pos, size_type __n) const _NOEXCEPT; 1289 _LIBCPP_INLINE_VISIBILITY 1290 size_type find_first_of(const value_type* __s, size_type __pos = 0) const _NOEXCEPT; 1291 _LIBCPP_INLINE_VISIBILITY 1292 size_type find_first_of(value_type __c, size_type __pos = 0) const _NOEXCEPT; 1293 1294 _LIBCPP_INLINE_VISIBILITY 1295 size_type find_last_of(const basic_string& __str, size_type __pos = npos) const _NOEXCEPT; 1296 1297 template <class _Tp> 1298 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1299 __enable_if_t 1300 < 1301 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1302 size_type 1303 > 1304 find_last_of(const _Tp& __t, size_type __pos = npos) const _NOEXCEPT; 1305 size_type find_last_of(const value_type* __s, size_type __pos, size_type __n) const _NOEXCEPT; 1306 _LIBCPP_INLINE_VISIBILITY 1307 size_type find_last_of(const value_type* __s, size_type __pos = npos) const _NOEXCEPT; 1308 _LIBCPP_INLINE_VISIBILITY 1309 size_type find_last_of(value_type __c, size_type __pos = npos) const _NOEXCEPT; 1310 1311 _LIBCPP_INLINE_VISIBILITY 1312 size_type find_first_not_of(const basic_string& __str, size_type __pos = 0) const _NOEXCEPT; 1313 1314 template <class _Tp> 1315 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1316 __enable_if_t 1317 < 1318 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1319 size_type 1320 > 1321 find_first_not_of(const _Tp &__t, size_type __pos = 0) const _NOEXCEPT; 1322 size_type find_first_not_of(const value_type* __s, size_type __pos, size_type __n) const _NOEXCEPT; 1323 _LIBCPP_INLINE_VISIBILITY 1324 size_type find_first_not_of(const value_type* __s, size_type __pos = 0) const _NOEXCEPT; 1325 _LIBCPP_INLINE_VISIBILITY 1326 size_type find_first_not_of(value_type __c, size_type __pos = 0) const _NOEXCEPT; 1327 1328 _LIBCPP_INLINE_VISIBILITY 1329 size_type find_last_not_of(const basic_string& __str, size_type __pos = npos) const _NOEXCEPT; 1330 1331 template <class _Tp> 1332 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1333 __enable_if_t 1334 < 1335 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1336 size_type 1337 > 1338 find_last_not_of(const _Tp& __t, size_type __pos = npos) const _NOEXCEPT; 1339 size_type find_last_not_of(const value_type* __s, size_type __pos, size_type __n) const _NOEXCEPT; 1340 _LIBCPP_INLINE_VISIBILITY 1341 size_type find_last_not_of(const value_type* __s, size_type __pos = npos) const _NOEXCEPT; 1342 _LIBCPP_INLINE_VISIBILITY 1343 size_type find_last_not_of(value_type __c, size_type __pos = npos) const _NOEXCEPT; 1344 1345 _LIBCPP_INLINE_VISIBILITY 1346 int compare(const basic_string& __str) const _NOEXCEPT; 1347 1348 template <class _Tp> 1349 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1350 __enable_if_t 1351 < 1352 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1353 int 1354 > 1355 compare(const _Tp &__t) const _NOEXCEPT; 1356 1357 template <class _Tp> 1358 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1359 __enable_if_t 1360 < 1361 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1362 int 1363 > 1364 compare(size_type __pos1, size_type __n1, const _Tp& __t) const; 1365 1366 _LIBCPP_INLINE_VISIBILITY 1367 int compare(size_type __pos1, size_type __n1, const basic_string& __str) const; 1368 int compare(size_type __pos1, size_type __n1, const basic_string& __str, size_type __pos2, size_type __n2=npos) const; 1369 1370 template <class _Tp> 1371 inline _LIBCPP_INLINE_VISIBILITY 1372 __enable_if_t 1373 < 1374 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value && !__is_same_uncvref<_Tp, basic_string>::value, 1375 int 1376 > 1377 compare(size_type __pos1, size_type __n1, const _Tp& __t, size_type __pos2, size_type __n2=npos) const; 1378 int compare(const value_type* __s) const _NOEXCEPT; 1379 int compare(size_type __pos1, size_type __n1, const value_type* __s) const; 1380 int compare(size_type __pos1, size_type __n1, const value_type* __s, size_type __n2) const; 1381 1382#if _LIBCPP_STD_VER > 17 1383 constexpr _LIBCPP_INLINE_VISIBILITY 1384 bool starts_with(__self_view __sv) const noexcept 1385 { return __self_view(data(), size()).starts_with(__sv); } 1386 1387 constexpr _LIBCPP_INLINE_VISIBILITY 1388 bool starts_with(value_type __c) const noexcept 1389 { return !empty() && _Traits::eq(front(), __c); } 1390 1391 constexpr _LIBCPP_INLINE_VISIBILITY 1392 bool starts_with(const value_type* __s) const noexcept 1393 { return starts_with(__self_view(__s)); } 1394 1395 constexpr _LIBCPP_INLINE_VISIBILITY 1396 bool ends_with(__self_view __sv) const noexcept 1397 { return __self_view(data(), size()).ends_with( __sv); } 1398 1399 constexpr _LIBCPP_INLINE_VISIBILITY 1400 bool ends_with(value_type __c) const noexcept 1401 { return !empty() && _Traits::eq(back(), __c); } 1402 1403 constexpr _LIBCPP_INLINE_VISIBILITY 1404 bool ends_with(const value_type* __s) const noexcept 1405 { return ends_with(__self_view(__s)); } 1406#endif 1407 1408#if _LIBCPP_STD_VER > 20 1409 constexpr _LIBCPP_INLINE_VISIBILITY 1410 bool contains(__self_view __sv) const noexcept 1411 { return __self_view(data(), size()).contains(__sv); } 1412 1413 constexpr _LIBCPP_INLINE_VISIBILITY 1414 bool contains(value_type __c) const noexcept 1415 { return __self_view(data(), size()).contains(__c); } 1416 1417 constexpr _LIBCPP_INLINE_VISIBILITY 1418 bool contains(const value_type* __s) const 1419 { return __self_view(data(), size()).contains(__s); } 1420#endif 1421 1422 _LIBCPP_INLINE_VISIBILITY bool __invariants() const; 1423 1424 _LIBCPP_INLINE_VISIBILITY void __clear_and_shrink() _NOEXCEPT; 1425 1426 _LIBCPP_INLINE_VISIBILITY void __shrink_or_extend(size_type __target_capacity); 1427 1428 _LIBCPP_INLINE_VISIBILITY 1429 bool __is_long() const _NOEXCEPT 1430 {return bool(__r_.first().__s.__size_ & __short_mask);} 1431 1432#if _LIBCPP_DEBUG_LEVEL == 2 1433 1434 bool __dereferenceable(const const_iterator* __i) const; 1435 bool __decrementable(const const_iterator* __i) const; 1436 bool __addable(const const_iterator* __i, ptrdiff_t __n) const; 1437 bool __subscriptable(const const_iterator* __i, ptrdiff_t __n) const; 1438 1439#endif // _LIBCPP_DEBUG_LEVEL == 2 1440 1441private: 1442 _LIBCPP_CONSTEXPR _LIBCPP_HIDE_FROM_ABI static bool __fits_in_sso(size_type __sz) { 1443 // SSO is disabled during constant evaluation because `__is_long` isn't constexpr friendly 1444 return !__libcpp_is_constant_evaluated() && (__sz < __min_cap); 1445 } 1446 1447 template <class _ForwardIterator> 1448 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX11 1449 iterator __insert_from_safe_copy(size_type __n, size_type __ip, _ForwardIterator __first, _ForwardIterator __last) { 1450 size_type __sz = size(); 1451 size_type __cap = capacity(); 1452 value_type* __p; 1453 if (__cap - __sz >= __n) 1454 { 1455 __p = std::__to_address(__get_pointer()); 1456 size_type __n_move = __sz - __ip; 1457 if (__n_move != 0) 1458 traits_type::move(__p + __ip + __n, __p + __ip, __n_move); 1459 } 1460 else 1461 { 1462 __grow_by(__cap, __sz + __n - __cap, __sz, __ip, 0, __n); 1463 __p = std::__to_address(__get_long_pointer()); 1464 } 1465 __sz += __n; 1466 __set_size(__sz); 1467 traits_type::assign(__p[__sz], value_type()); 1468 for (__p += __ip; __first != __last; ++__p, ++__first) 1469 traits_type::assign(*__p, *__first); 1470 1471 return begin() + __ip; 1472 } 1473 1474 _LIBCPP_HIDE_FROM_ABI allocator_type& __alloc() _NOEXCEPT { return __r_.second(); } 1475 _LIBCPP_HIDE_FROM_ABI const allocator_type& __alloc() const _NOEXCEPT { return __r_.second(); } 1476 1477#ifdef _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT 1478 1479 _LIBCPP_INLINE_VISIBILITY 1480 void __set_short_size(size_type __s) _NOEXCEPT 1481# ifdef _LIBCPP_BIG_ENDIAN 1482 {__r_.first().__s.__size_ = (unsigned char)(__s << 1);} 1483# else 1484 {__r_.first().__s.__size_ = (unsigned char)(__s);} 1485# endif 1486 1487 _LIBCPP_INLINE_VISIBILITY 1488 size_type __get_short_size() const _NOEXCEPT 1489# ifdef _LIBCPP_BIG_ENDIAN 1490 {return __r_.first().__s.__size_ >> 1;} 1491# else 1492 {return __r_.first().__s.__size_;} 1493# endif 1494 1495#else // _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT 1496 1497 _LIBCPP_INLINE_VISIBILITY 1498 void __set_short_size(size_type __s) _NOEXCEPT 1499# ifdef _LIBCPP_BIG_ENDIAN 1500 {__r_.first().__s.__size_ = (unsigned char)(__s);} 1501# else 1502 {__r_.first().__s.__size_ = (unsigned char)(__s << 1);} 1503# endif 1504 1505 _LIBCPP_INLINE_VISIBILITY 1506 size_type __get_short_size() const _NOEXCEPT 1507# ifdef _LIBCPP_BIG_ENDIAN 1508 {return __r_.first().__s.__size_;} 1509# else 1510 {return __r_.first().__s.__size_ >> 1;} 1511# endif 1512 1513#endif // _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT 1514 1515 _LIBCPP_INLINE_VISIBILITY 1516 void __set_long_size(size_type __s) _NOEXCEPT 1517 {__r_.first().__l.__size_ = __s;} 1518 _LIBCPP_INLINE_VISIBILITY 1519 size_type __get_long_size() const _NOEXCEPT 1520 {return __r_.first().__l.__size_;} 1521 _LIBCPP_INLINE_VISIBILITY 1522 void __set_size(size_type __s) _NOEXCEPT 1523 {if (__is_long()) __set_long_size(__s); else __set_short_size(__s);} 1524 1525 _LIBCPP_INLINE_VISIBILITY 1526 void __set_long_cap(size_type __s) _NOEXCEPT 1527 {__r_.first().__l.__cap_ = __long_mask | __s;} 1528 _LIBCPP_INLINE_VISIBILITY 1529 size_type __get_long_cap() const _NOEXCEPT 1530 {return __r_.first().__l.__cap_ & size_type(~__long_mask);} 1531 1532 _LIBCPP_INLINE_VISIBILITY 1533 void __set_long_pointer(pointer __p) _NOEXCEPT 1534 {__r_.first().__l.__data_ = __p;} 1535 _LIBCPP_INLINE_VISIBILITY 1536 pointer __get_long_pointer() _NOEXCEPT 1537 {return __r_.first().__l.__data_;} 1538 _LIBCPP_INLINE_VISIBILITY 1539 const_pointer __get_long_pointer() const _NOEXCEPT 1540 {return __r_.first().__l.__data_;} 1541 _LIBCPP_INLINE_VISIBILITY 1542 pointer __get_short_pointer() _NOEXCEPT 1543 {return pointer_traits<pointer>::pointer_to(__r_.first().__s.__data_[0]);} 1544 _LIBCPP_INLINE_VISIBILITY 1545 const_pointer __get_short_pointer() const _NOEXCEPT 1546 {return pointer_traits<const_pointer>::pointer_to(__r_.first().__s.__data_[0]);} 1547 _LIBCPP_INLINE_VISIBILITY 1548 pointer __get_pointer() _NOEXCEPT 1549 {return __is_long() ? __get_long_pointer() : __get_short_pointer();} 1550 _LIBCPP_INLINE_VISIBILITY 1551 const_pointer __get_pointer() const _NOEXCEPT 1552 {return __is_long() ? __get_long_pointer() : __get_short_pointer();} 1553 1554 _LIBCPP_INLINE_VISIBILITY 1555 void __zero() _NOEXCEPT 1556 { 1557 size_type (&__a)[__n_words] = __r_.first().__r.__words; 1558 for (unsigned __i = 0; __i < __n_words; ++__i) 1559 __a[__i] = 0; 1560 } 1561 1562 template <size_type __a> static 1563 _LIBCPP_INLINE_VISIBILITY 1564 size_type __align_it(size_type __s) _NOEXCEPT 1565 {return (__s + (__a-1)) & ~(__a-1);} 1566 enum {__alignment = 16}; 1567 static _LIBCPP_INLINE_VISIBILITY 1568 size_type __recommend(size_type __s) _NOEXCEPT 1569 { 1570 if (__s < __min_cap) return static_cast<size_type>(__min_cap) - 1; 1571 size_type __guess = __align_it<sizeof(value_type) < __alignment ? 1572 __alignment/sizeof(value_type) : 1 > (__s+1) - 1; 1573 if (__guess == __min_cap) ++__guess; 1574 return __guess; 1575 } 1576 1577 inline 1578 void __init(const value_type* __s, size_type __sz, size_type __reserve); 1579 inline 1580 void __init(const value_type* __s, size_type __sz); 1581 inline 1582 void __init(size_type __n, value_type __c); 1583 1584 // Slow path for the (inlined) copy constructor for 'long' strings. 1585 // Always externally instantiated and not inlined. 1586 // Requires that __s is zero terminated. 1587 // The main reason for this function to exist is because for unstable, we 1588 // want to allow inlining of the copy constructor. However, we don't want 1589 // to call the __init() functions as those are marked as inline which may 1590 // result in over-aggressive inlining by the compiler, where our aim is 1591 // to only inline the fast path code directly in the ctor. 1592 void __init_copy_ctor_external(const value_type* __s, size_type __sz); 1593 1594 template <class _InputIterator> 1595 inline 1596 __enable_if_t 1597 < 1598 __is_exactly_cpp17_input_iterator<_InputIterator>::value 1599 > 1600 __init(_InputIterator __first, _InputIterator __last); 1601 1602 template <class _ForwardIterator> 1603 inline 1604 __enable_if_t 1605 < 1606 __is_cpp17_forward_iterator<_ForwardIterator>::value 1607 > 1608 __init(_ForwardIterator __first, _ForwardIterator __last); 1609 1610 void __grow_by(size_type __old_cap, size_type __delta_cap, size_type __old_sz, 1611 size_type __n_copy, size_type __n_del, size_type __n_add = 0); 1612 void __grow_by_and_replace(size_type __old_cap, size_type __delta_cap, size_type __old_sz, 1613 size_type __n_copy, size_type __n_del, 1614 size_type __n_add, const value_type* __p_new_stuff); 1615 1616 // __assign_no_alias is invoked for assignment operations where we 1617 // have proof that the input does not alias the current instance. 1618 // For example, operator=(basic_string) performs a 'self' check. 1619 template <bool __is_short> 1620 basic_string& __assign_no_alias(const value_type* __s, size_type __n); 1621 1622 _LIBCPP_INLINE_VISIBILITY 1623 void __erase_to_end(size_type __pos); 1624 1625 // __erase_external_with_move is invoked for erase() invocations where 1626 // `n ~= npos`, likely requiring memory moves on the string data. 1627 void __erase_external_with_move(size_type __pos, size_type __n); 1628 1629 _LIBCPP_INLINE_VISIBILITY 1630 void __copy_assign_alloc(const basic_string& __str) 1631 {__copy_assign_alloc(__str, integral_constant<bool, 1632 __alloc_traits::propagate_on_container_copy_assignment::value>());} 1633 1634 _LIBCPP_INLINE_VISIBILITY 1635 void __copy_assign_alloc(const basic_string& __str, true_type) 1636 { 1637 if (__alloc() == __str.__alloc()) 1638 __alloc() = __str.__alloc(); 1639 else 1640 { 1641 if (!__str.__is_long()) 1642 { 1643 __clear_and_shrink(); 1644 __alloc() = __str.__alloc(); 1645 } 1646 else 1647 { 1648 allocator_type __a = __str.__alloc(); 1649 auto __allocation = std::__allocate_at_least(__a, __str.__get_long_cap()); 1650 __clear_and_shrink(); 1651 __alloc() = _VSTD::move(__a); 1652 __set_long_pointer(__allocation.ptr); 1653 __set_long_cap(__allocation.count); 1654 __set_long_size(__str.size()); 1655 } 1656 } 1657 } 1658 1659 _LIBCPP_INLINE_VISIBILITY 1660 void __copy_assign_alloc(const basic_string&, false_type) _NOEXCEPT 1661 {} 1662 1663#ifndef _LIBCPP_CXX03_LANG 1664 _LIBCPP_INLINE_VISIBILITY 1665 void __move_assign(basic_string& __str, false_type) 1666 _NOEXCEPT_(__alloc_traits::is_always_equal::value); 1667 _LIBCPP_INLINE_VISIBILITY 1668 void __move_assign(basic_string& __str, true_type) 1669#if _LIBCPP_STD_VER > 14 1670 _NOEXCEPT; 1671#else 1672 _NOEXCEPT_(is_nothrow_move_assignable<allocator_type>::value); 1673#endif 1674#endif 1675 1676 _LIBCPP_INLINE_VISIBILITY 1677 void 1678 __move_assign_alloc(basic_string& __str) 1679 _NOEXCEPT_( 1680 !__alloc_traits::propagate_on_container_move_assignment::value || 1681 is_nothrow_move_assignable<allocator_type>::value) 1682 {__move_assign_alloc(__str, integral_constant<bool, 1683 __alloc_traits::propagate_on_container_move_assignment::value>());} 1684 1685 _LIBCPP_INLINE_VISIBILITY 1686 void __move_assign_alloc(basic_string& __c, true_type) 1687 _NOEXCEPT_(is_nothrow_move_assignable<allocator_type>::value) 1688 { 1689 __alloc() = _VSTD::move(__c.__alloc()); 1690 } 1691 1692 _LIBCPP_INLINE_VISIBILITY 1693 void __move_assign_alloc(basic_string&, false_type) 1694 _NOEXCEPT 1695 {} 1696 1697 basic_string& __assign_external(const value_type* __s); 1698 basic_string& __assign_external(const value_type* __s, size_type __n); 1699 1700 // Assigns the value in __s, guaranteed to be __n < __min_cap in length. 1701 inline basic_string& __assign_short(const value_type* __s, size_type __n) { 1702 pointer __p = __is_long() 1703 ? (__set_long_size(__n), __get_long_pointer()) 1704 : (__set_short_size(__n), __get_short_pointer()); 1705 traits_type::move(_VSTD::__to_address(__p), __s, __n); 1706 traits_type::assign(__p[__n], value_type()); 1707 return *this; 1708 } 1709 1710 _LIBCPP_HIDE_FROM_ABI basic_string& __null_terminate_at(value_type* __p, size_type __newsz) { 1711 __set_size(__newsz); 1712 __invalidate_iterators_past(__newsz); 1713 traits_type::assign(__p[__newsz], value_type()); 1714 return *this; 1715 } 1716 1717 _LIBCPP_INLINE_VISIBILITY void __invalidate_all_iterators(); 1718 _LIBCPP_INLINE_VISIBILITY void __invalidate_iterators_past(size_type); 1719 1720 template<class _Tp> 1721 _LIBCPP_INLINE_VISIBILITY 1722 bool __addr_in_range(_Tp&& __t) const { 1723 const volatile void *__p = _VSTD::addressof(__t); 1724 return data() <= __p && __p <= data() + size(); 1725 } 1726 1727 _LIBCPP_NORETURN _LIBCPP_HIDE_FROM_ABI 1728 void __throw_length_error() const { 1729 _VSTD::__throw_length_error("basic_string"); 1730 } 1731 1732 _LIBCPP_NORETURN _LIBCPP_HIDE_FROM_ABI 1733 void __throw_out_of_range() const { 1734 _VSTD::__throw_out_of_range("basic_string"); 1735 } 1736 1737 friend basic_string operator+<>(const basic_string&, const basic_string&); 1738 friend basic_string operator+<>(const value_type*, const basic_string&); 1739 friend basic_string operator+<>(value_type, const basic_string&); 1740 friend basic_string operator+<>(const basic_string&, const value_type*); 1741 friend basic_string operator+<>(const basic_string&, value_type); 1742}; 1743 1744// These declarations must appear before any functions are implicitly used 1745// so that they have the correct visibility specifier. 1746#ifdef _LIBCPP_ABI_STRING_OPTIMIZED_EXTERNAL_INSTANTIATION 1747 _LIBCPP_STRING_UNSTABLE_EXTERN_TEMPLATE_LIST(_LIBCPP_EXTERN_TEMPLATE, char) 1748# ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 1749 _LIBCPP_STRING_UNSTABLE_EXTERN_TEMPLATE_LIST(_LIBCPP_EXTERN_TEMPLATE, wchar_t) 1750# endif 1751#else 1752 _LIBCPP_STRING_V1_EXTERN_TEMPLATE_LIST(_LIBCPP_EXTERN_TEMPLATE, char) 1753# ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 1754 _LIBCPP_STRING_V1_EXTERN_TEMPLATE_LIST(_LIBCPP_EXTERN_TEMPLATE, wchar_t) 1755# endif 1756#endif 1757 1758 1759#if _LIBCPP_STD_VER >= 17 1760template<class _InputIterator, 1761 class _CharT = __iter_value_type<_InputIterator>, 1762 class _Allocator = allocator<_CharT>, 1763 class = enable_if_t<__is_cpp17_input_iterator<_InputIterator>::value>, 1764 class = enable_if_t<__is_allocator<_Allocator>::value> 1765 > 1766basic_string(_InputIterator, _InputIterator, _Allocator = _Allocator()) 1767 -> basic_string<_CharT, char_traits<_CharT>, _Allocator>; 1768 1769template<class _CharT, 1770 class _Traits, 1771 class _Allocator = allocator<_CharT>, 1772 class = enable_if_t<__is_allocator<_Allocator>::value> 1773 > 1774explicit basic_string(basic_string_view<_CharT, _Traits>, const _Allocator& = _Allocator()) 1775 -> basic_string<_CharT, _Traits, _Allocator>; 1776 1777template<class _CharT, 1778 class _Traits, 1779 class _Allocator = allocator<_CharT>, 1780 class = enable_if_t<__is_allocator<_Allocator>::value>, 1781 class _Sz = typename allocator_traits<_Allocator>::size_type 1782 > 1783basic_string(basic_string_view<_CharT, _Traits>, _Sz, _Sz, const _Allocator& = _Allocator()) 1784 -> basic_string<_CharT, _Traits, _Allocator>; 1785#endif 1786 1787template <class _CharT, class _Traits, class _Allocator> 1788inline 1789void 1790basic_string<_CharT, _Traits, _Allocator>::__invalidate_all_iterators() 1791{ 1792#if _LIBCPP_DEBUG_LEVEL == 2 1793 if (!__libcpp_is_constant_evaluated()) 1794 __get_db()->__invalidate_all(this); 1795#endif 1796} 1797 1798template <class _CharT, class _Traits, class _Allocator> 1799inline 1800void 1801basic_string<_CharT, _Traits, _Allocator>::__invalidate_iterators_past(size_type __pos) 1802{ 1803#if _LIBCPP_DEBUG_LEVEL == 2 1804 if (!__libcpp_is_constant_evaluated()) { 1805 __c_node* __c = __get_db()->__find_c_and_lock(this); 1806 if (__c) 1807 { 1808 const_pointer __new_last = __get_pointer() + __pos; 1809 for (__i_node** __p = __c->end_; __p != __c->beg_; ) 1810 { 1811 --__p; 1812 const_iterator* __i = static_cast<const_iterator*>((*__p)->__i_); 1813 if (__i->base() > __new_last) 1814 { 1815 (*__p)->__c_ = nullptr; 1816 if (--__c->end_ != __p) 1817 _VSTD::memmove(__p, __p+1, (__c->end_ - __p)*sizeof(__i_node*)); 1818 } 1819 } 1820 __get_db()->unlock(); 1821 } 1822 } 1823#else 1824 (void)__pos; 1825#endif // _LIBCPP_DEBUG_LEVEL == 2 1826} 1827 1828template <class _CharT, class _Traits, class _Allocator> 1829inline 1830basic_string<_CharT, _Traits, _Allocator>::basic_string() 1831 _NOEXCEPT_(is_nothrow_default_constructible<allocator_type>::value) 1832 : __r_(__default_init_tag(), __default_init_tag()) 1833{ 1834 _VSTD::__debug_db_insert_c(this); 1835 __zero(); 1836} 1837 1838template <class _CharT, class _Traits, class _Allocator> 1839inline 1840basic_string<_CharT, _Traits, _Allocator>::basic_string(const allocator_type& __a) 1841#if _LIBCPP_STD_VER <= 14 1842 _NOEXCEPT_(is_nothrow_copy_constructible<allocator_type>::value) 1843#else 1844 _NOEXCEPT 1845#endif 1846: __r_(__default_init_tag(), __a) 1847{ 1848 _VSTD::__debug_db_insert_c(this); 1849 __zero(); 1850} 1851 1852template <class _CharT, class _Traits, class _Allocator> 1853void basic_string<_CharT, _Traits, _Allocator>::__init(const value_type* __s, 1854 size_type __sz, 1855 size_type __reserve) 1856{ 1857 if (__reserve > max_size()) 1858 __throw_length_error(); 1859 pointer __p; 1860 if (__fits_in_sso(__reserve)) 1861 { 1862 __set_short_size(__sz); 1863 __p = __get_short_pointer(); 1864 } 1865 else 1866 { 1867 auto __allocation = std::__allocate_at_least(__alloc(), __recommend(__reserve) + 1); 1868 __p = __allocation.ptr; 1869 __set_long_pointer(__p); 1870 __set_long_cap(__allocation.count); 1871 __set_long_size(__sz); 1872 } 1873 traits_type::copy(_VSTD::__to_address(__p), __s, __sz); 1874 traits_type::assign(__p[__sz], value_type()); 1875} 1876 1877template <class _CharT, class _Traits, class _Allocator> 1878void 1879basic_string<_CharT, _Traits, _Allocator>::__init(const value_type* __s, size_type __sz) 1880{ 1881 if (__sz > max_size()) 1882 __throw_length_error(); 1883 pointer __p; 1884 if (__fits_in_sso(__sz)) 1885 { 1886 __set_short_size(__sz); 1887 __p = __get_short_pointer(); 1888 } 1889 else 1890 { 1891 auto __allocation = std::__allocate_at_least(__alloc(), __recommend(__sz) + 1); 1892 __p = __allocation.ptr; 1893 __set_long_pointer(__p); 1894 __set_long_cap(__allocation.count); 1895 __set_long_size(__sz); 1896 } 1897 traits_type::copy(_VSTD::__to_address(__p), __s, __sz); 1898 traits_type::assign(__p[__sz], value_type()); 1899} 1900 1901template <class _CharT, class _Traits, class _Allocator> 1902template <class> 1903basic_string<_CharT, _Traits, _Allocator>::basic_string(const _CharT* __s, const _Allocator& __a) 1904 : __r_(__default_init_tag(), __a) 1905{ 1906 _LIBCPP_ASSERT(__s != nullptr, "basic_string(const char*, allocator) detected nullptr"); 1907 __init(__s, traits_type::length(__s)); 1908 _VSTD::__debug_db_insert_c(this); 1909} 1910 1911template <class _CharT, class _Traits, class _Allocator> 1912inline 1913basic_string<_CharT, _Traits, _Allocator>::basic_string(const _CharT* __s, size_type __n) 1914 : __r_(__default_init_tag(), __default_init_tag()) 1915{ 1916 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "basic_string(const char*, n) detected nullptr"); 1917 __init(__s, __n); 1918 _VSTD::__debug_db_insert_c(this); 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 _VSTD::__debug_db_insert_c(this); 1929} 1930 1931template <class _CharT, class _Traits, class _Allocator> 1932basic_string<_CharT, _Traits, _Allocator>::basic_string(const basic_string& __str) 1933 : __r_(__default_init_tag(), __alloc_traits::select_on_container_copy_construction(__str.__alloc())) 1934{ 1935 if (!__str.__is_long()) 1936 __r_.first().__r = __str.__r_.first().__r; 1937 else 1938 __init_copy_ctor_external(_VSTD::__to_address(__str.__get_long_pointer()), 1939 __str.__get_long_size()); 1940 _VSTD::__debug_db_insert_c(this); 1941} 1942 1943template <class _CharT, class _Traits, class _Allocator> 1944basic_string<_CharT, _Traits, _Allocator>::basic_string( 1945 const basic_string& __str, const allocator_type& __a) 1946 : __r_(__default_init_tag(), __a) 1947{ 1948 if (!__str.__is_long()) 1949 __r_.first().__r = __str.__r_.first().__r; 1950 else 1951 __init_copy_ctor_external(_VSTD::__to_address(__str.__get_long_pointer()), 1952 __str.__get_long_size()); 1953 _VSTD::__debug_db_insert_c(this); 1954} 1955 1956template <class _CharT, class _Traits, class _Allocator> 1957void basic_string<_CharT, _Traits, _Allocator>::__init_copy_ctor_external( 1958 const value_type* __s, size_type __sz) { 1959 pointer __p; 1960 if (__fits_in_sso(__sz)) { 1961 __p = __get_short_pointer(); 1962 __set_short_size(__sz); 1963 } else { 1964 if (__sz > max_size()) 1965 __throw_length_error(); 1966 auto __allocation = std::__allocate_at_least(__alloc(), __recommend(__sz) + 1); 1967 __p = __allocation.ptr; 1968 __set_long_pointer(__p); 1969 __set_long_cap(__allocation.count); 1970 __set_long_size(__sz); 1971 } 1972 traits_type::copy(_VSTD::__to_address(__p), __s, __sz + 1); 1973} 1974 1975#ifndef _LIBCPP_CXX03_LANG 1976 1977template <class _CharT, class _Traits, class _Allocator> 1978inline 1979basic_string<_CharT, _Traits, _Allocator>::basic_string(basic_string&& __str) 1980#if _LIBCPP_STD_VER <= 14 1981 _NOEXCEPT_(is_nothrow_move_constructible<allocator_type>::value) 1982#else 1983 _NOEXCEPT 1984#endif 1985 : __r_(_VSTD::move(__str.__r_)) 1986{ 1987 __str.__zero(); 1988 _VSTD::__debug_db_insert_c(this); 1989#if _LIBCPP_DEBUG_LEVEL == 2 1990 if (!__libcpp_is_constant_evaluated() && __is_long()) 1991 __get_db()->swap(this, &__str); 1992#endif 1993} 1994 1995template <class _CharT, class _Traits, class _Allocator> 1996inline 1997basic_string<_CharT, _Traits, _Allocator>::basic_string(basic_string&& __str, const allocator_type& __a) 1998 : __r_(__default_init_tag(), __a) 1999{ 2000 if (__str.__is_long() && __a != __str.__alloc()) // copy, not move 2001 __init(_VSTD::__to_address(__str.__get_long_pointer()), __str.__get_long_size()); 2002 else 2003 { 2004 __r_.first().__r = __str.__r_.first().__r; 2005 __str.__zero(); 2006 } 2007 _VSTD::__debug_db_insert_c(this); 2008#if _LIBCPP_DEBUG_LEVEL == 2 2009 if (!__libcpp_is_constant_evaluated() && __is_long()) 2010 __get_db()->swap(this, &__str); 2011#endif 2012} 2013 2014#endif // _LIBCPP_CXX03_LANG 2015 2016template <class _CharT, class _Traits, class _Allocator> 2017void 2018basic_string<_CharT, _Traits, _Allocator>::__init(size_type __n, value_type __c) 2019{ 2020 if (__n > max_size()) 2021 __throw_length_error(); 2022 pointer __p; 2023 if (__fits_in_sso(__n)) 2024 { 2025 __set_short_size(__n); 2026 __p = __get_short_pointer(); 2027 } 2028 else 2029 { 2030 auto __allocation = std::__allocate_at_least(__alloc(), __recommend(__n) + 1); 2031 __p = __allocation.ptr; 2032 __set_long_pointer(__p); 2033 __set_long_cap(__allocation.count); 2034 __set_long_size(__n); 2035 } 2036 traits_type::assign(_VSTD::__to_address(__p), __n, __c); 2037 traits_type::assign(__p[__n], value_type()); 2038} 2039 2040template <class _CharT, class _Traits, class _Allocator> 2041inline 2042basic_string<_CharT, _Traits, _Allocator>::basic_string(size_type __n, _CharT __c) 2043 : __r_(__default_init_tag(), __default_init_tag()) 2044{ 2045 __init(__n, __c); 2046 _VSTD::__debug_db_insert_c(this); 2047} 2048 2049template <class _CharT, class _Traits, class _Allocator> 2050template <class> 2051basic_string<_CharT, _Traits, _Allocator>::basic_string(size_type __n, _CharT __c, const _Allocator& __a) 2052 : __r_(__default_init_tag(), __a) 2053{ 2054 __init(__n, __c); 2055 _VSTD::__debug_db_insert_c(this); 2056} 2057 2058template <class _CharT, class _Traits, class _Allocator> 2059basic_string<_CharT, _Traits, _Allocator>::basic_string(const basic_string& __str, 2060 size_type __pos, size_type __n, 2061 const _Allocator& __a) 2062 : __r_(__default_init_tag(), __a) 2063{ 2064 size_type __str_sz = __str.size(); 2065 if (__pos > __str_sz) 2066 __throw_out_of_range(); 2067 __init(__str.data() + __pos, _VSTD::min(__n, __str_sz - __pos)); 2068 _VSTD::__debug_db_insert_c(this); 2069} 2070 2071template <class _CharT, class _Traits, class _Allocator> 2072inline 2073basic_string<_CharT, _Traits, _Allocator>::basic_string(const basic_string& __str, size_type __pos, 2074 const _Allocator& __a) 2075 : __r_(__default_init_tag(), __a) 2076{ 2077 size_type __str_sz = __str.size(); 2078 if (__pos > __str_sz) 2079 __throw_out_of_range(); 2080 __init(__str.data() + __pos, __str_sz - __pos); 2081 _VSTD::__debug_db_insert_c(this); 2082} 2083 2084template <class _CharT, class _Traits, class _Allocator> 2085template <class _Tp, class> 2086basic_string<_CharT, _Traits, _Allocator>::basic_string( 2087 const _Tp& __t, size_type __pos, size_type __n, const allocator_type& __a) 2088 : __r_(__default_init_tag(), __a) 2089{ 2090 __self_view __sv0 = __t; 2091 __self_view __sv = __sv0.substr(__pos, __n); 2092 __init(__sv.data(), __sv.size()); 2093 _VSTD::__debug_db_insert_c(this); 2094} 2095 2096template <class _CharT, class _Traits, class _Allocator> 2097template <class _Tp, class> 2098basic_string<_CharT, _Traits, _Allocator>::basic_string(const _Tp & __t) 2099 : __r_(__default_init_tag(), __default_init_tag()) 2100{ 2101 __self_view __sv = __t; 2102 __init(__sv.data(), __sv.size()); 2103 _VSTD::__debug_db_insert_c(this); 2104} 2105 2106template <class _CharT, class _Traits, class _Allocator> 2107template <class _Tp, class> 2108basic_string<_CharT, _Traits, _Allocator>::basic_string(const _Tp & __t, const _Allocator& __a) 2109 : __r_(__default_init_tag(), __a) 2110{ 2111 __self_view __sv = __t; 2112 __init(__sv.data(), __sv.size()); 2113 _VSTD::__debug_db_insert_c(this); 2114} 2115 2116template <class _CharT, class _Traits, class _Allocator> 2117template <class _InputIterator> 2118__enable_if_t 2119< 2120 __is_exactly_cpp17_input_iterator<_InputIterator>::value 2121> 2122basic_string<_CharT, _Traits, _Allocator>::__init(_InputIterator __first, _InputIterator __last) 2123{ 2124 __zero(); 2125#ifndef _LIBCPP_NO_EXCEPTIONS 2126 try 2127 { 2128#endif // _LIBCPP_NO_EXCEPTIONS 2129 for (; __first != __last; ++__first) 2130 push_back(*__first); 2131#ifndef _LIBCPP_NO_EXCEPTIONS 2132 } 2133 catch (...) 2134 { 2135 if (__is_long()) 2136 __alloc_traits::deallocate(__alloc(), __get_long_pointer(), __get_long_cap()); 2137 throw; 2138 } 2139#endif // _LIBCPP_NO_EXCEPTIONS 2140} 2141 2142template <class _CharT, class _Traits, class _Allocator> 2143template <class _ForwardIterator> 2144__enable_if_t 2145< 2146 __is_cpp17_forward_iterator<_ForwardIterator>::value 2147> 2148basic_string<_CharT, _Traits, _Allocator>::__init(_ForwardIterator __first, _ForwardIterator __last) 2149{ 2150 size_type __sz = static_cast<size_type>(_VSTD::distance(__first, __last)); 2151 if (__sz > max_size()) 2152 __throw_length_error(); 2153 pointer __p; 2154 if (__fits_in_sso(__sz)) 2155 { 2156 __set_short_size(__sz); 2157 __p = __get_short_pointer(); 2158 } 2159 else 2160 { 2161 auto __allocation = std::__allocate_at_least(__alloc(), __recommend(__sz) + 1); 2162 __p = __allocation.ptr; 2163 __set_long_pointer(__p); 2164 __set_long_cap(__allocation.count); 2165 __set_long_size(__sz); 2166 } 2167 2168#ifndef _LIBCPP_NO_EXCEPTIONS 2169 try 2170 { 2171#endif // _LIBCPP_NO_EXCEPTIONS 2172 for (; __first != __last; ++__first, (void) ++__p) 2173 traits_type::assign(*__p, *__first); 2174 traits_type::assign(*__p, value_type()); 2175#ifndef _LIBCPP_NO_EXCEPTIONS 2176 } 2177 catch (...) 2178 { 2179 if (__is_long()) 2180 __alloc_traits::deallocate(__alloc(), __get_long_pointer(), __get_long_cap()); 2181 throw; 2182 } 2183#endif // _LIBCPP_NO_EXCEPTIONS 2184} 2185 2186template <class _CharT, class _Traits, class _Allocator> 2187template<class _InputIterator, class> 2188inline 2189basic_string<_CharT, _Traits, _Allocator>::basic_string(_InputIterator __first, _InputIterator __last) 2190 : __r_(__default_init_tag(), __default_init_tag()) 2191{ 2192 __init(__first, __last); 2193 _VSTD::__debug_db_insert_c(this); 2194} 2195 2196template <class _CharT, class _Traits, class _Allocator> 2197template<class _InputIterator, class> 2198inline 2199basic_string<_CharT, _Traits, _Allocator>::basic_string(_InputIterator __first, _InputIterator __last, 2200 const allocator_type& __a) 2201 : __r_(__default_init_tag(), __a) 2202{ 2203 __init(__first, __last); 2204 _VSTD::__debug_db_insert_c(this); 2205} 2206 2207#ifndef _LIBCPP_CXX03_LANG 2208 2209template <class _CharT, class _Traits, class _Allocator> 2210inline 2211basic_string<_CharT, _Traits, _Allocator>::basic_string( 2212 initializer_list<_CharT> __il) 2213 : __r_(__default_init_tag(), __default_init_tag()) 2214{ 2215 __init(__il.begin(), __il.end()); 2216 _VSTD::__debug_db_insert_c(this); 2217} 2218 2219template <class _CharT, class _Traits, class _Allocator> 2220inline 2221 2222basic_string<_CharT, _Traits, _Allocator>::basic_string( 2223 initializer_list<_CharT> __il, const _Allocator& __a) 2224 : __r_(__default_init_tag(), __a) 2225{ 2226 __init(__il.begin(), __il.end()); 2227 _VSTD::__debug_db_insert_c(this); 2228} 2229 2230#endif // _LIBCPP_CXX03_LANG 2231 2232template <class _CharT, class _Traits, class _Allocator> 2233basic_string<_CharT, _Traits, _Allocator>::~basic_string() 2234{ 2235#if _LIBCPP_DEBUG_LEVEL == 2 2236 if (!__libcpp_is_constant_evaluated()) 2237 __get_db()->__erase_c(this); 2238#endif 2239 if (__is_long()) 2240 __alloc_traits::deallocate(__alloc(), __get_long_pointer(), __get_long_cap()); 2241} 2242 2243template <class _CharT, class _Traits, class _Allocator> 2244void 2245basic_string<_CharT, _Traits, _Allocator>::__grow_by_and_replace 2246 (size_type __old_cap, size_type __delta_cap, size_type __old_sz, 2247 size_type __n_copy, size_type __n_del, size_type __n_add, const value_type* __p_new_stuff) 2248{ 2249 size_type __ms = max_size(); 2250 if (__delta_cap > __ms - __old_cap - 1) 2251 __throw_length_error(); 2252 pointer __old_p = __get_pointer(); 2253 size_type __cap = __old_cap < __ms / 2 - __alignment ? 2254 __recommend(_VSTD::max(__old_cap + __delta_cap, 2 * __old_cap)) : 2255 __ms - 1; 2256 auto __allocation = std::__allocate_at_least(__alloc(), __cap + 1); 2257 pointer __p = __allocation.ptr; 2258 __invalidate_all_iterators(); 2259 if (__n_copy != 0) 2260 traits_type::copy(_VSTD::__to_address(__p), 2261 _VSTD::__to_address(__old_p), __n_copy); 2262 if (__n_add != 0) 2263 traits_type::copy(_VSTD::__to_address(__p) + __n_copy, __p_new_stuff, __n_add); 2264 size_type __sec_cp_sz = __old_sz - __n_del - __n_copy; 2265 if (__sec_cp_sz != 0) 2266 traits_type::copy(_VSTD::__to_address(__p) + __n_copy + __n_add, 2267 _VSTD::__to_address(__old_p) + __n_copy + __n_del, __sec_cp_sz); 2268 if (__old_cap+1 != __min_cap) 2269 __alloc_traits::deallocate(__alloc(), __old_p, __old_cap+1); 2270 __set_long_pointer(__p); 2271 __set_long_cap(__allocation.count); 2272 __old_sz = __n_copy + __n_add + __sec_cp_sz; 2273 __set_long_size(__old_sz); 2274 traits_type::assign(__p[__old_sz], value_type()); 2275} 2276 2277template <class _CharT, class _Traits, class _Allocator> 2278void 2279basic_string<_CharT, _Traits, _Allocator>::__grow_by(size_type __old_cap, size_type __delta_cap, size_type __old_sz, 2280 size_type __n_copy, size_type __n_del, size_type __n_add) 2281{ 2282 size_type __ms = max_size(); 2283 if (__delta_cap > __ms - __old_cap) 2284 __throw_length_error(); 2285 pointer __old_p = __get_pointer(); 2286 size_type __cap = __old_cap < __ms / 2 - __alignment ? 2287 __recommend(_VSTD::max(__old_cap + __delta_cap, 2 * __old_cap)) : 2288 __ms - 1; 2289 auto __allocation = std::__allocate_at_least(__alloc(), __cap + 1); 2290 pointer __p = __allocation.ptr; 2291 __invalidate_all_iterators(); 2292 if (__n_copy != 0) 2293 traits_type::copy(_VSTD::__to_address(__p), 2294 _VSTD::__to_address(__old_p), __n_copy); 2295 size_type __sec_cp_sz = __old_sz - __n_del - __n_copy; 2296 if (__sec_cp_sz != 0) 2297 traits_type::copy(_VSTD::__to_address(__p) + __n_copy + __n_add, 2298 _VSTD::__to_address(__old_p) + __n_copy + __n_del, 2299 __sec_cp_sz); 2300 if (__old_cap+1 != __min_cap) 2301 __alloc_traits::deallocate(__alloc(), __old_p, __old_cap+1); 2302 __set_long_pointer(__p); 2303 __set_long_cap(__allocation.count); 2304} 2305 2306// assign 2307 2308template <class _CharT, class _Traits, class _Allocator> 2309template <bool __is_short> 2310basic_string<_CharT, _Traits, _Allocator>& 2311basic_string<_CharT, _Traits, _Allocator>::__assign_no_alias( 2312 const value_type* __s, size_type __n) { 2313 size_type __cap = __is_short ? static_cast<size_type>(__min_cap) : __get_long_cap(); 2314 if (__n < __cap) { 2315 pointer __p = __is_short ? __get_short_pointer() : __get_long_pointer(); 2316 __is_short ? __set_short_size(__n) : __set_long_size(__n); 2317 traits_type::copy(_VSTD::__to_address(__p), __s, __n); 2318 traits_type::assign(__p[__n], value_type()); 2319 __invalidate_iterators_past(__n); 2320 } else { 2321 size_type __sz = __is_short ? __get_short_size() : __get_long_size(); 2322 __grow_by_and_replace(__cap - 1, __n - __cap + 1, __sz, 0, __sz, __n, __s); 2323 } 2324 return *this; 2325} 2326 2327template <class _CharT, class _Traits, class _Allocator> 2328basic_string<_CharT, _Traits, _Allocator>& 2329basic_string<_CharT, _Traits, _Allocator>::__assign_external( 2330 const value_type* __s, size_type __n) { 2331 size_type __cap = capacity(); 2332 if (__cap >= __n) { 2333 value_type* __p = _VSTD::__to_address(__get_pointer()); 2334 traits_type::move(__p, __s, __n); 2335 return __null_terminate_at(__p, __n); 2336 } else { 2337 size_type __sz = size(); 2338 __grow_by_and_replace(__cap, __n - __cap, __sz, 0, __sz, __n, __s); 2339 return *this; 2340 } 2341} 2342 2343template <class _CharT, class _Traits, class _Allocator> 2344basic_string<_CharT, _Traits, _Allocator>& 2345basic_string<_CharT, _Traits, _Allocator>::assign(const value_type* __s, size_type __n) 2346{ 2347 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::assign received nullptr"); 2348 return (__builtin_constant_p(__n) && __fits_in_sso(__n)) 2349 ? __assign_short(__s, __n) 2350 : __assign_external(__s, __n); 2351} 2352 2353template <class _CharT, class _Traits, class _Allocator> 2354basic_string<_CharT, _Traits, _Allocator>& 2355basic_string<_CharT, _Traits, _Allocator>::assign(size_type __n, value_type __c) 2356{ 2357 size_type __cap = capacity(); 2358 if (__cap < __n) 2359 { 2360 size_type __sz = size(); 2361 __grow_by(__cap, __n - __cap, __sz, 0, __sz); 2362 } 2363 value_type* __p = _VSTD::__to_address(__get_pointer()); 2364 traits_type::assign(__p, __n, __c); 2365 return __null_terminate_at(__p, __n); 2366} 2367 2368template <class _CharT, class _Traits, class _Allocator> 2369basic_string<_CharT, _Traits, _Allocator>& 2370basic_string<_CharT, _Traits, _Allocator>::operator=(value_type __c) 2371{ 2372 pointer __p; 2373 if (__is_long()) 2374 { 2375 __p = __get_long_pointer(); 2376 __set_long_size(1); 2377 } 2378 else 2379 { 2380 __p = __get_short_pointer(); 2381 __set_short_size(1); 2382 } 2383 traits_type::assign(*__p, __c); 2384 traits_type::assign(*++__p, value_type()); 2385 __invalidate_iterators_past(1); 2386 return *this; 2387} 2388 2389template <class _CharT, class _Traits, class _Allocator> 2390basic_string<_CharT, _Traits, _Allocator>& 2391basic_string<_CharT, _Traits, _Allocator>::operator=(const basic_string& __str) 2392{ 2393 if (this != &__str) { 2394 __copy_assign_alloc(__str); 2395 if (!__is_long()) { 2396 if (!__str.__is_long()) { 2397 __r_.first().__r = __str.__r_.first().__r; 2398 } else { 2399 return __assign_no_alias<true>(__str.data(), __str.size()); 2400 } 2401 } else { 2402 return __assign_no_alias<false>(__str.data(), __str.size()); 2403 } 2404 } 2405 return *this; 2406} 2407 2408#ifndef _LIBCPP_CXX03_LANG 2409 2410template <class _CharT, class _Traits, class _Allocator> 2411inline 2412void 2413basic_string<_CharT, _Traits, _Allocator>::__move_assign(basic_string& __str, false_type) 2414 _NOEXCEPT_(__alloc_traits::is_always_equal::value) 2415{ 2416 if (__alloc() != __str.__alloc()) 2417 assign(__str); 2418 else 2419 __move_assign(__str, true_type()); 2420} 2421 2422template <class _CharT, class _Traits, class _Allocator> 2423inline 2424void 2425basic_string<_CharT, _Traits, _Allocator>::__move_assign(basic_string& __str, true_type) 2426#if _LIBCPP_STD_VER > 14 2427 _NOEXCEPT 2428#else 2429 _NOEXCEPT_(is_nothrow_move_assignable<allocator_type>::value) 2430#endif 2431{ 2432 if (__is_long()) { 2433 __alloc_traits::deallocate(__alloc(), __get_long_pointer(), 2434 __get_long_cap()); 2435#if _LIBCPP_STD_VER <= 14 2436 if (!is_nothrow_move_assignable<allocator_type>::value) { 2437 __set_short_size(0); 2438 traits_type::assign(__get_short_pointer()[0], value_type()); 2439 } 2440#endif 2441 } 2442 __move_assign_alloc(__str); 2443 __r_.first() = __str.__r_.first(); 2444 __str.__set_short_size(0); 2445 traits_type::assign(__str.__get_short_pointer()[0], value_type()); 2446} 2447 2448template <class _CharT, class _Traits, class _Allocator> 2449inline 2450basic_string<_CharT, _Traits, _Allocator>& 2451basic_string<_CharT, _Traits, _Allocator>::operator=(basic_string&& __str) 2452 _NOEXCEPT_((__noexcept_move_assign_container<_Allocator, __alloc_traits>::value)) 2453{ 2454 __move_assign(__str, integral_constant<bool, 2455 __alloc_traits::propagate_on_container_move_assignment::value>()); 2456 return *this; 2457} 2458 2459#endif 2460 2461template <class _CharT, class _Traits, class _Allocator> 2462template<class _InputIterator> 2463__enable_if_t 2464< 2465 __is_exactly_cpp17_input_iterator<_InputIterator>::value, 2466 basic_string<_CharT, _Traits, _Allocator>& 2467> 2468basic_string<_CharT, _Traits, _Allocator>::assign(_InputIterator __first, _InputIterator __last) 2469{ 2470 const basic_string __temp(__first, __last, __alloc()); 2471 assign(__temp.data(), __temp.size()); 2472 return *this; 2473} 2474 2475template <class _CharT, class _Traits, class _Allocator> 2476template<class _ForwardIterator> 2477__enable_if_t 2478< 2479 __is_cpp17_forward_iterator<_ForwardIterator>::value, 2480 basic_string<_CharT, _Traits, _Allocator>& 2481> 2482basic_string<_CharT, _Traits, _Allocator>::assign(_ForwardIterator __first, _ForwardIterator __last) 2483{ 2484 size_type __cap = capacity(); 2485 size_type __n = __string_is_trivial_iterator<_ForwardIterator>::value ? 2486 static_cast<size_type>(_VSTD::distance(__first, __last)) : 0; 2487 2488 if (__string_is_trivial_iterator<_ForwardIterator>::value && 2489 (__cap >= __n || !__addr_in_range(*__first))) 2490 { 2491 if (__cap < __n) 2492 { 2493 size_type __sz = size(); 2494 __grow_by(__cap, __n - __cap, __sz, 0, __sz); 2495 } 2496 pointer __p = __get_pointer(); 2497 for (; __first != __last; ++__p, (void) ++__first) 2498 traits_type::assign(*__p, *__first); 2499 traits_type::assign(*__p, value_type()); 2500 __set_size(__n); 2501 __invalidate_iterators_past(__n); 2502 } 2503 else 2504 { 2505 const basic_string __temp(__first, __last, __alloc()); 2506 assign(__temp.data(), __temp.size()); 2507 } 2508 return *this; 2509} 2510 2511template <class _CharT, class _Traits, class _Allocator> 2512basic_string<_CharT, _Traits, _Allocator>& 2513basic_string<_CharT, _Traits, _Allocator>::assign(const basic_string& __str, size_type __pos, size_type __n) 2514{ 2515 size_type __sz = __str.size(); 2516 if (__pos > __sz) 2517 __throw_out_of_range(); 2518 return assign(__str.data() + __pos, _VSTD::min(__n, __sz - __pos)); 2519} 2520 2521template <class _CharT, class _Traits, class _Allocator> 2522template <class _Tp> 2523__enable_if_t 2524< 2525 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value 2526 && !__is_same_uncvref<_Tp, basic_string<_CharT, _Traits, _Allocator> >::value, 2527 basic_string<_CharT, _Traits, _Allocator>& 2528> 2529basic_string<_CharT, _Traits, _Allocator>::assign(const _Tp & __t, size_type __pos, size_type __n) 2530{ 2531 __self_view __sv = __t; 2532 size_type __sz = __sv.size(); 2533 if (__pos > __sz) 2534 __throw_out_of_range(); 2535 return assign(__sv.data() + __pos, _VSTD::min(__n, __sz - __pos)); 2536} 2537 2538 2539template <class _CharT, class _Traits, class _Allocator> 2540basic_string<_CharT, _Traits, _Allocator>& 2541basic_string<_CharT, _Traits, _Allocator>::__assign_external(const value_type* __s) { 2542 return __assign_external(__s, traits_type::length(__s)); 2543} 2544 2545template <class _CharT, class _Traits, class _Allocator> 2546basic_string<_CharT, _Traits, _Allocator>& 2547basic_string<_CharT, _Traits, _Allocator>::assign(const value_type* __s) 2548{ 2549 _LIBCPP_ASSERT(__s != nullptr, "string::assign received nullptr"); 2550 return __builtin_constant_p(*__s) 2551 ? (__fits_in_sso(traits_type::length(__s)) 2552 ? __assign_short(__s, traits_type::length(__s)) 2553 : __assign_external(__s, traits_type::length(__s))) 2554 : __assign_external(__s); 2555} 2556// append 2557 2558template <class _CharT, class _Traits, class _Allocator> 2559basic_string<_CharT, _Traits, _Allocator>& 2560basic_string<_CharT, _Traits, _Allocator>::append(const value_type* __s, size_type __n) 2561{ 2562 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::append received nullptr"); 2563 size_type __cap = capacity(); 2564 size_type __sz = size(); 2565 if (__cap - __sz >= __n) 2566 { 2567 if (__n) 2568 { 2569 value_type* __p = _VSTD::__to_address(__get_pointer()); 2570 traits_type::copy(__p + __sz, __s, __n); 2571 __sz += __n; 2572 __set_size(__sz); 2573 traits_type::assign(__p[__sz], value_type()); 2574 } 2575 } 2576 else 2577 __grow_by_and_replace(__cap, __sz + __n - __cap, __sz, __sz, 0, __n, __s); 2578 return *this; 2579} 2580 2581template <class _CharT, class _Traits, class _Allocator> 2582basic_string<_CharT, _Traits, _Allocator>& 2583basic_string<_CharT, _Traits, _Allocator>::append(size_type __n, value_type __c) 2584{ 2585 if (__n) 2586 { 2587 size_type __cap = capacity(); 2588 size_type __sz = size(); 2589 if (__cap - __sz < __n) 2590 __grow_by(__cap, __sz + __n - __cap, __sz, __sz, 0); 2591 pointer __p = __get_pointer(); 2592 traits_type::assign(_VSTD::__to_address(__p) + __sz, __n, __c); 2593 __sz += __n; 2594 __set_size(__sz); 2595 traits_type::assign(__p[__sz], value_type()); 2596 } 2597 return *this; 2598} 2599 2600template <class _CharT, class _Traits, class _Allocator> 2601inline void 2602basic_string<_CharT, _Traits, _Allocator>::__append_default_init(size_type __n) 2603{ 2604 if (__n) 2605 { 2606 size_type __cap = capacity(); 2607 size_type __sz = size(); 2608 if (__cap - __sz < __n) 2609 __grow_by(__cap, __sz + __n - __cap, __sz, __sz, 0); 2610 pointer __p = __get_pointer(); 2611 __sz += __n; 2612 __set_size(__sz); 2613 traits_type::assign(__p[__sz], value_type()); 2614 } 2615} 2616 2617template <class _CharT, class _Traits, class _Allocator> 2618void 2619basic_string<_CharT, _Traits, _Allocator>::push_back(value_type __c) 2620{ 2621 bool __is_short = !__is_long(); 2622 size_type __cap; 2623 size_type __sz; 2624 if (__is_short) 2625 { 2626 __cap = __min_cap - 1; 2627 __sz = __get_short_size(); 2628 } 2629 else 2630 { 2631 __cap = __get_long_cap() - 1; 2632 __sz = __get_long_size(); 2633 } 2634 if (__sz == __cap) 2635 { 2636 __grow_by(__cap, 1, __sz, __sz, 0); 2637 __is_short = false; // the string is always long after __grow_by 2638 } 2639 pointer __p; 2640 if (__is_short) 2641 { 2642 __p = __get_short_pointer() + __sz; 2643 __set_short_size(__sz+1); 2644 } 2645 else 2646 { 2647 __p = __get_long_pointer() + __sz; 2648 __set_long_size(__sz+1); 2649 } 2650 traits_type::assign(*__p, __c); 2651 traits_type::assign(*++__p, value_type()); 2652} 2653 2654template <class _CharT, class _Traits, class _Allocator> 2655template<class _ForwardIterator> 2656__enable_if_t 2657< 2658 __is_cpp17_forward_iterator<_ForwardIterator>::value, 2659 basic_string<_CharT, _Traits, _Allocator>& 2660> 2661basic_string<_CharT, _Traits, _Allocator>::append( 2662 _ForwardIterator __first, _ForwardIterator __last) 2663{ 2664 size_type __sz = size(); 2665 size_type __cap = capacity(); 2666 size_type __n = static_cast<size_type>(_VSTD::distance(__first, __last)); 2667 if (__n) 2668 { 2669 if (__string_is_trivial_iterator<_ForwardIterator>::value && 2670 !__addr_in_range(*__first)) 2671 { 2672 if (__cap - __sz < __n) 2673 __grow_by(__cap, __sz + __n - __cap, __sz, __sz, 0); 2674 pointer __p = __get_pointer() + __sz; 2675 for (; __first != __last; ++__p, (void) ++__first) 2676 traits_type::assign(*__p, *__first); 2677 traits_type::assign(*__p, value_type()); 2678 __set_size(__sz + __n); 2679 } 2680 else 2681 { 2682 const basic_string __temp(__first, __last, __alloc()); 2683 append(__temp.data(), __temp.size()); 2684 } 2685 } 2686 return *this; 2687} 2688 2689template <class _CharT, class _Traits, class _Allocator> 2690inline 2691basic_string<_CharT, _Traits, _Allocator>& 2692basic_string<_CharT, _Traits, _Allocator>::append(const basic_string& __str) 2693{ 2694 return append(__str.data(), __str.size()); 2695} 2696 2697template <class _CharT, class _Traits, class _Allocator> 2698basic_string<_CharT, _Traits, _Allocator>& 2699basic_string<_CharT, _Traits, _Allocator>::append(const basic_string& __str, size_type __pos, size_type __n) 2700{ 2701 size_type __sz = __str.size(); 2702 if (__pos > __sz) 2703 __throw_out_of_range(); 2704 return append(__str.data() + __pos, _VSTD::min(__n, __sz - __pos)); 2705} 2706 2707template <class _CharT, class _Traits, class _Allocator> 2708template <class _Tp> 2709 __enable_if_t 2710 < 2711 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value && !__is_same_uncvref<_Tp, basic_string<_CharT, _Traits, _Allocator> >::value, 2712 basic_string<_CharT, _Traits, _Allocator>& 2713 > 2714basic_string<_CharT, _Traits, _Allocator>::append(const _Tp & __t, size_type __pos, size_type __n) 2715{ 2716 __self_view __sv = __t; 2717 size_type __sz = __sv.size(); 2718 if (__pos > __sz) 2719 __throw_out_of_range(); 2720 return append(__sv.data() + __pos, _VSTD::min(__n, __sz - __pos)); 2721} 2722 2723template <class _CharT, class _Traits, class _Allocator> 2724basic_string<_CharT, _Traits, _Allocator>& 2725basic_string<_CharT, _Traits, _Allocator>::append(const value_type* __s) 2726{ 2727 _LIBCPP_ASSERT(__s != nullptr, "string::append received nullptr"); 2728 return append(__s, traits_type::length(__s)); 2729} 2730 2731// insert 2732 2733template <class _CharT, class _Traits, class _Allocator> 2734basic_string<_CharT, _Traits, _Allocator>& 2735basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos, const value_type* __s, size_type __n) 2736{ 2737 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::insert received nullptr"); 2738 size_type __sz = size(); 2739 if (__pos > __sz) 2740 __throw_out_of_range(); 2741 size_type __cap = capacity(); 2742 if (__cap - __sz >= __n) 2743 { 2744 if (__n) 2745 { 2746 value_type* __p = _VSTD::__to_address(__get_pointer()); 2747 size_type __n_move = __sz - __pos; 2748 if (__n_move != 0) 2749 { 2750 if (__p + __pos <= __s && __s < __p + __sz) 2751 __s += __n; 2752 traits_type::move(__p + __pos + __n, __p + __pos, __n_move); 2753 } 2754 traits_type::move(__p + __pos, __s, __n); 2755 __sz += __n; 2756 __set_size(__sz); 2757 traits_type::assign(__p[__sz], value_type()); 2758 } 2759 } 2760 else 2761 __grow_by_and_replace(__cap, __sz + __n - __cap, __sz, __pos, 0, __n, __s); 2762 return *this; 2763} 2764 2765template <class _CharT, class _Traits, class _Allocator> 2766basic_string<_CharT, _Traits, _Allocator>& 2767basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos, size_type __n, value_type __c) 2768{ 2769 size_type __sz = size(); 2770 if (__pos > __sz) 2771 __throw_out_of_range(); 2772 if (__n) 2773 { 2774 size_type __cap = capacity(); 2775 value_type* __p; 2776 if (__cap - __sz >= __n) 2777 { 2778 __p = _VSTD::__to_address(__get_pointer()); 2779 size_type __n_move = __sz - __pos; 2780 if (__n_move != 0) 2781 traits_type::move(__p + __pos + __n, __p + __pos, __n_move); 2782 } 2783 else 2784 { 2785 __grow_by(__cap, __sz + __n - __cap, __sz, __pos, 0, __n); 2786 __p = _VSTD::__to_address(__get_long_pointer()); 2787 } 2788 traits_type::assign(__p + __pos, __n, __c); 2789 __sz += __n; 2790 __set_size(__sz); 2791 traits_type::assign(__p[__sz], value_type()); 2792 } 2793 return *this; 2794} 2795 2796template <class _CharT, class _Traits, class _Allocator> 2797template<class _InputIterator> 2798__enable_if_t 2799< 2800 __is_exactly_cpp17_input_iterator<_InputIterator>::value, 2801 typename basic_string<_CharT, _Traits, _Allocator>::iterator 2802> 2803basic_string<_CharT, _Traits, _Allocator>::insert(const_iterator __pos, _InputIterator __first, _InputIterator __last) 2804{ 2805 _LIBCPP_DEBUG_ASSERT(__get_const_db()->__find_c_from_i(&__pos) == this, 2806 "string::insert(iterator, range) called with an iterator not" 2807 " referring to this string"); 2808 const basic_string __temp(__first, __last, __alloc()); 2809 return insert(__pos, __temp.data(), __temp.data() + __temp.size()); 2810} 2811 2812template <class _CharT, class _Traits, class _Allocator> 2813template<class _ForwardIterator> 2814__enable_if_t 2815< 2816 __is_cpp17_forward_iterator<_ForwardIterator>::value, 2817 typename basic_string<_CharT, _Traits, _Allocator>::iterator 2818> 2819basic_string<_CharT, _Traits, _Allocator>::insert(const_iterator __pos, _ForwardIterator __first, _ForwardIterator __last) 2820{ 2821 _LIBCPP_DEBUG_ASSERT(__get_const_db()->__find_c_from_i(&__pos) == this, 2822 "string::insert(iterator, range) called with an iterator not referring to this string"); 2823 2824 size_type __ip = static_cast<size_type>(__pos - begin()); 2825 size_type __n = static_cast<size_type>(std::distance(__first, __last)); 2826 if (__n == 0) 2827 return begin() + __ip; 2828 2829 if (__string_is_trivial_iterator<_ForwardIterator>::value && !__addr_in_range(*__first)) 2830 { 2831 return __insert_from_safe_copy(__n, __ip, __first, __last); 2832 } 2833 else 2834 { 2835 const basic_string __temp(__first, __last, __alloc()); 2836 return __insert_from_safe_copy(__n, __ip, __temp.begin(), __temp.end()); 2837 } 2838} 2839 2840template <class _CharT, class _Traits, class _Allocator> 2841inline 2842basic_string<_CharT, _Traits, _Allocator>& 2843basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos1, const basic_string& __str) 2844{ 2845 return insert(__pos1, __str.data(), __str.size()); 2846} 2847 2848template <class _CharT, class _Traits, class _Allocator> 2849basic_string<_CharT, _Traits, _Allocator>& 2850basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos1, const basic_string& __str, 2851 size_type __pos2, size_type __n) 2852{ 2853 size_type __str_sz = __str.size(); 2854 if (__pos2 > __str_sz) 2855 __throw_out_of_range(); 2856 return insert(__pos1, __str.data() + __pos2, _VSTD::min(__n, __str_sz - __pos2)); 2857} 2858 2859template <class _CharT, class _Traits, class _Allocator> 2860template <class _Tp> 2861__enable_if_t 2862< 2863 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value && !__is_same_uncvref<_Tp, basic_string<_CharT, _Traits, _Allocator> >::value, 2864 basic_string<_CharT, _Traits, _Allocator>& 2865> 2866basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos1, const _Tp& __t, 2867 size_type __pos2, size_type __n) 2868{ 2869 __self_view __sv = __t; 2870 size_type __str_sz = __sv.size(); 2871 if (__pos2 > __str_sz) 2872 __throw_out_of_range(); 2873 return insert(__pos1, __sv.data() + __pos2, _VSTD::min(__n, __str_sz - __pos2)); 2874} 2875 2876template <class _CharT, class _Traits, class _Allocator> 2877basic_string<_CharT, _Traits, _Allocator>& 2878basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos, const value_type* __s) 2879{ 2880 _LIBCPP_ASSERT(__s != nullptr, "string::insert received nullptr"); 2881 return insert(__pos, __s, traits_type::length(__s)); 2882} 2883 2884template <class _CharT, class _Traits, class _Allocator> 2885typename basic_string<_CharT, _Traits, _Allocator>::iterator 2886basic_string<_CharT, _Traits, _Allocator>::insert(const_iterator __pos, value_type __c) 2887{ 2888 _LIBCPP_DEBUG_ASSERT(__get_const_db()->__find_c_from_i(&__pos) == this, 2889 "string::insert(iterator, character) called with an iterator not" 2890 " referring to this string"); 2891 2892 size_type __ip = static_cast<size_type>(__pos - begin()); 2893 size_type __sz = size(); 2894 size_type __cap = capacity(); 2895 value_type* __p; 2896 if (__cap == __sz) 2897 { 2898 __grow_by(__cap, 1, __sz, __ip, 0, 1); 2899 __p = _VSTD::__to_address(__get_long_pointer()); 2900 } 2901 else 2902 { 2903 __p = _VSTD::__to_address(__get_pointer()); 2904 size_type __n_move = __sz - __ip; 2905 if (__n_move != 0) 2906 traits_type::move(__p + __ip + 1, __p + __ip, __n_move); 2907 } 2908 traits_type::assign(__p[__ip], __c); 2909 traits_type::assign(__p[++__sz], value_type()); 2910 __set_size(__sz); 2911 return begin() + static_cast<difference_type>(__ip); 2912} 2913 2914template <class _CharT, class _Traits, class _Allocator> 2915inline 2916typename basic_string<_CharT, _Traits, _Allocator>::iterator 2917basic_string<_CharT, _Traits, _Allocator>::insert(const_iterator __pos, size_type __n, value_type __c) 2918{ 2919 _LIBCPP_DEBUG_ASSERT(__get_const_db()->__find_c_from_i(&__pos) == this, 2920 "string::insert(iterator, n, value) called with an iterator not" 2921 " referring to this string"); 2922 difference_type __p = __pos - begin(); 2923 insert(static_cast<size_type>(__p), __n, __c); 2924 return begin() + __p; 2925} 2926 2927// replace 2928 2929template <class _CharT, class _Traits, class _Allocator> 2930basic_string<_CharT, _Traits, _Allocator>& 2931basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos, size_type __n1, const value_type* __s, size_type __n2) 2932 _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK 2933{ 2934 _LIBCPP_ASSERT(__n2 == 0 || __s != nullptr, "string::replace received nullptr"); 2935 size_type __sz = size(); 2936 if (__pos > __sz) 2937 __throw_out_of_range(); 2938 __n1 = _VSTD::min(__n1, __sz - __pos); 2939 size_type __cap = capacity(); 2940 if (__cap - __sz + __n1 >= __n2) 2941 { 2942 value_type* __p = _VSTD::__to_address(__get_pointer()); 2943 if (__n1 != __n2) 2944 { 2945 size_type __n_move = __sz - __pos - __n1; 2946 if (__n_move != 0) 2947 { 2948 if (__n1 > __n2) 2949 { 2950 traits_type::move(__p + __pos, __s, __n2); 2951 traits_type::move(__p + __pos + __n2, __p + __pos + __n1, __n_move); 2952 return __null_terminate_at(__p, __sz + (__n2 - __n1)); 2953 } 2954 if (__p + __pos < __s && __s < __p + __sz) 2955 { 2956 if (__p + __pos + __n1 <= __s) 2957 __s += __n2 - __n1; 2958 else // __p + __pos < __s < __p + __pos + __n1 2959 { 2960 traits_type::move(__p + __pos, __s, __n1); 2961 __pos += __n1; 2962 __s += __n2; 2963 __n2 -= __n1; 2964 __n1 = 0; 2965 } 2966 } 2967 traits_type::move(__p + __pos + __n2, __p + __pos + __n1, __n_move); 2968 } 2969 } 2970 traits_type::move(__p + __pos, __s, __n2); 2971 return __null_terminate_at(__p, __sz + (__n2 - __n1)); 2972 } 2973 else 2974 __grow_by_and_replace(__cap, __sz - __n1 + __n2 - __cap, __sz, __pos, __n1, __n2, __s); 2975 return *this; 2976} 2977 2978template <class _CharT, class _Traits, class _Allocator> 2979basic_string<_CharT, _Traits, _Allocator>& 2980basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos, size_type __n1, size_type __n2, value_type __c) 2981{ 2982 size_type __sz = size(); 2983 if (__pos > __sz) 2984 __throw_out_of_range(); 2985 __n1 = _VSTD::min(__n1, __sz - __pos); 2986 size_type __cap = capacity(); 2987 value_type* __p; 2988 if (__cap - __sz + __n1 >= __n2) 2989 { 2990 __p = _VSTD::__to_address(__get_pointer()); 2991 if (__n1 != __n2) 2992 { 2993 size_type __n_move = __sz - __pos - __n1; 2994 if (__n_move != 0) 2995 traits_type::move(__p + __pos + __n2, __p + __pos + __n1, __n_move); 2996 } 2997 } 2998 else 2999 { 3000 __grow_by(__cap, __sz - __n1 + __n2 - __cap, __sz, __pos, __n1, __n2); 3001 __p = _VSTD::__to_address(__get_long_pointer()); 3002 } 3003 traits_type::assign(__p + __pos, __n2, __c); 3004 return __null_terminate_at(__p, __sz - (__n1 - __n2)); 3005} 3006 3007template <class _CharT, class _Traits, class _Allocator> 3008template<class _InputIterator> 3009__enable_if_t 3010< 3011 __is_cpp17_input_iterator<_InputIterator>::value, 3012 basic_string<_CharT, _Traits, _Allocator>& 3013> 3014basic_string<_CharT, _Traits, _Allocator>::replace(const_iterator __i1, const_iterator __i2, 3015 _InputIterator __j1, _InputIterator __j2) 3016{ 3017 const basic_string __temp(__j1, __j2, __alloc()); 3018 return replace(__i1, __i2, __temp); 3019} 3020 3021template <class _CharT, class _Traits, class _Allocator> 3022inline 3023basic_string<_CharT, _Traits, _Allocator>& 3024basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos1, size_type __n1, const basic_string& __str) 3025{ 3026 return replace(__pos1, __n1, __str.data(), __str.size()); 3027} 3028 3029template <class _CharT, class _Traits, class _Allocator> 3030basic_string<_CharT, _Traits, _Allocator>& 3031basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos1, size_type __n1, const basic_string& __str, 3032 size_type __pos2, size_type __n2) 3033{ 3034 size_type __str_sz = __str.size(); 3035 if (__pos2 > __str_sz) 3036 __throw_out_of_range(); 3037 return replace(__pos1, __n1, __str.data() + __pos2, _VSTD::min(__n2, __str_sz - __pos2)); 3038} 3039 3040template <class _CharT, class _Traits, class _Allocator> 3041template <class _Tp> 3042__enable_if_t 3043< 3044 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value && !__is_same_uncvref<_Tp, basic_string<_CharT, _Traits, _Allocator> >::value, 3045 basic_string<_CharT, _Traits, _Allocator>& 3046> 3047basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos1, size_type __n1, const _Tp& __t, 3048 size_type __pos2, size_type __n2) 3049{ 3050 __self_view __sv = __t; 3051 size_type __str_sz = __sv.size(); 3052 if (__pos2 > __str_sz) 3053 __throw_out_of_range(); 3054 return replace(__pos1, __n1, __sv.data() + __pos2, _VSTD::min(__n2, __str_sz - __pos2)); 3055} 3056 3057template <class _CharT, class _Traits, class _Allocator> 3058basic_string<_CharT, _Traits, _Allocator>& 3059basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos, size_type __n1, const value_type* __s) 3060{ 3061 _LIBCPP_ASSERT(__s != nullptr, "string::replace received nullptr"); 3062 return replace(__pos, __n1, __s, traits_type::length(__s)); 3063} 3064 3065template <class _CharT, class _Traits, class _Allocator> 3066inline 3067basic_string<_CharT, _Traits, _Allocator>& 3068basic_string<_CharT, _Traits, _Allocator>::replace(const_iterator __i1, const_iterator __i2, const basic_string& __str) 3069{ 3070 return replace(static_cast<size_type>(__i1 - begin()), static_cast<size_type>(__i2 - __i1), 3071 __str.data(), __str.size()); 3072} 3073 3074template <class _CharT, class _Traits, class _Allocator> 3075inline 3076basic_string<_CharT, _Traits, _Allocator>& 3077basic_string<_CharT, _Traits, _Allocator>::replace(const_iterator __i1, const_iterator __i2, const value_type* __s, size_type __n) 3078{ 3079 return replace(static_cast<size_type>(__i1 - begin()), static_cast<size_type>(__i2 - __i1), __s, __n); 3080} 3081 3082template <class _CharT, class _Traits, class _Allocator> 3083inline 3084basic_string<_CharT, _Traits, _Allocator>& 3085basic_string<_CharT, _Traits, _Allocator>::replace(const_iterator __i1, const_iterator __i2, const value_type* __s) 3086{ 3087 return replace(static_cast<size_type>(__i1 - begin()), static_cast<size_type>(__i2 - __i1), __s); 3088} 3089 3090template <class _CharT, class _Traits, class _Allocator> 3091inline 3092basic_string<_CharT, _Traits, _Allocator>& 3093basic_string<_CharT, _Traits, _Allocator>::replace(const_iterator __i1, const_iterator __i2, size_type __n, value_type __c) 3094{ 3095 return replace(static_cast<size_type>(__i1 - begin()), static_cast<size_type>(__i2 - __i1), __n, __c); 3096} 3097 3098// erase 3099 3100// 'externally instantiated' erase() implementation, called when __n != npos. 3101// Does not check __pos against size() 3102template <class _CharT, class _Traits, class _Allocator> 3103void 3104basic_string<_CharT, _Traits, _Allocator>::__erase_external_with_move( 3105 size_type __pos, size_type __n) 3106{ 3107 if (__n) 3108 { 3109 size_type __sz = size(); 3110 value_type* __p = _VSTD::__to_address(__get_pointer()); 3111 __n = _VSTD::min(__n, __sz - __pos); 3112 size_type __n_move = __sz - __pos - __n; 3113 if (__n_move != 0) 3114 traits_type::move(__p + __pos, __p + __pos + __n, __n_move); 3115 __null_terminate_at(__p, __sz - __n); 3116 } 3117} 3118 3119template <class _CharT, class _Traits, class _Allocator> 3120basic_string<_CharT, _Traits, _Allocator>& 3121basic_string<_CharT, _Traits, _Allocator>::erase(size_type __pos, 3122 size_type __n) { 3123 if (__pos > size()) 3124 __throw_out_of_range(); 3125 if (__n == npos) { 3126 __erase_to_end(__pos); 3127 } else { 3128 __erase_external_with_move(__pos, __n); 3129 } 3130 return *this; 3131} 3132 3133template <class _CharT, class _Traits, class _Allocator> 3134inline 3135typename basic_string<_CharT, _Traits, _Allocator>::iterator 3136basic_string<_CharT, _Traits, _Allocator>::erase(const_iterator __pos) 3137{ 3138 _LIBCPP_DEBUG_ASSERT(__get_const_db()->__find_c_from_i(&__pos) == this, 3139 "string::erase(iterator) called with an iterator not" 3140 " referring to this string"); 3141 3142 _LIBCPP_ASSERT(__pos != end(), "string::erase(iterator) called with a non-dereferenceable iterator"); 3143 iterator __b = begin(); 3144 size_type __r = static_cast<size_type>(__pos - __b); 3145 erase(__r, 1); 3146 return __b + static_cast<difference_type>(__r); 3147} 3148 3149template <class _CharT, class _Traits, class _Allocator> 3150inline 3151typename basic_string<_CharT, _Traits, _Allocator>::iterator 3152basic_string<_CharT, _Traits, _Allocator>::erase(const_iterator __first, const_iterator __last) 3153{ 3154 _LIBCPP_DEBUG_ASSERT(__get_const_db()->__find_c_from_i(&__first) == this, 3155 "string::erase(iterator, iterator) called with an iterator not" 3156 " referring to this string"); 3157 3158 _LIBCPP_ASSERT(__first <= __last, "string::erase(first, last) called with invalid range"); 3159 iterator __b = begin(); 3160 size_type __r = static_cast<size_type>(__first - __b); 3161 erase(__r, static_cast<size_type>(__last - __first)); 3162 return __b + static_cast<difference_type>(__r); 3163} 3164 3165template <class _CharT, class _Traits, class _Allocator> 3166inline 3167void 3168basic_string<_CharT, _Traits, _Allocator>::pop_back() 3169{ 3170 _LIBCPP_ASSERT(!empty(), "string::pop_back(): string is already empty"); 3171 __erase_to_end(size() - 1); 3172} 3173 3174template <class _CharT, class _Traits, class _Allocator> 3175inline 3176void 3177basic_string<_CharT, _Traits, _Allocator>::clear() _NOEXCEPT 3178{ 3179 __invalidate_all_iterators(); 3180 if (__is_long()) 3181 { 3182 traits_type::assign(*__get_long_pointer(), value_type()); 3183 __set_long_size(0); 3184 } 3185 else 3186 { 3187 traits_type::assign(*__get_short_pointer(), value_type()); 3188 __set_short_size(0); 3189 } 3190} 3191 3192template <class _CharT, class _Traits, class _Allocator> 3193inline 3194void 3195basic_string<_CharT, _Traits, _Allocator>::__erase_to_end(size_type __pos) 3196{ 3197 __null_terminate_at(_VSTD::__to_address(__get_pointer()), __pos); 3198} 3199 3200template <class _CharT, class _Traits, class _Allocator> 3201void 3202basic_string<_CharT, _Traits, _Allocator>::resize(size_type __n, value_type __c) 3203{ 3204 size_type __sz = size(); 3205 if (__n > __sz) 3206 append(__n - __sz, __c); 3207 else 3208 __erase_to_end(__n); 3209} 3210 3211template <class _CharT, class _Traits, class _Allocator> 3212inline void 3213basic_string<_CharT, _Traits, _Allocator>::__resize_default_init(size_type __n) 3214{ 3215 size_type __sz = size(); 3216 if (__n > __sz) { 3217 __append_default_init(__n - __sz); 3218 } else 3219 __erase_to_end(__n); 3220} 3221 3222template <class _CharT, class _Traits, class _Allocator> 3223inline 3224typename basic_string<_CharT, _Traits, _Allocator>::size_type 3225basic_string<_CharT, _Traits, _Allocator>::max_size() const _NOEXCEPT 3226{ 3227 size_type __m = __alloc_traits::max_size(__alloc()); 3228#ifdef _LIBCPP_BIG_ENDIAN 3229 return (__m <= ~__long_mask ? __m : __m/2) - __alignment; 3230#else 3231 return __m - __alignment; 3232#endif 3233} 3234 3235template <class _CharT, class _Traits, class _Allocator> 3236void 3237basic_string<_CharT, _Traits, _Allocator>::reserve(size_type __requested_capacity) 3238{ 3239 if (__requested_capacity > max_size()) 3240 __throw_length_error(); 3241 3242 // Make sure reserve(n) never shrinks. This is technically only required in C++20 3243 // and later (since P0966R1), however we provide consistent behavior in all Standard 3244 // modes because this function is instantiated in the shared library. 3245 if (__requested_capacity <= capacity()) 3246 return; 3247 3248 size_type __target_capacity = _VSTD::max(__requested_capacity, size()); 3249 __target_capacity = __recommend(__target_capacity); 3250 if (__target_capacity == capacity()) return; 3251 3252 __shrink_or_extend(__target_capacity); 3253} 3254 3255template <class _CharT, class _Traits, class _Allocator> 3256inline 3257void 3258basic_string<_CharT, _Traits, _Allocator>::shrink_to_fit() _NOEXCEPT 3259{ 3260 size_type __target_capacity = __recommend(size()); 3261 if (__target_capacity == capacity()) return; 3262 3263 __shrink_or_extend(__target_capacity); 3264} 3265 3266template <class _CharT, class _Traits, class _Allocator> 3267inline 3268void 3269basic_string<_CharT, _Traits, _Allocator>::__shrink_or_extend(size_type __target_capacity) 3270{ 3271 size_type __cap = capacity(); 3272 size_type __sz = size(); 3273 3274 pointer __new_data, __p; 3275 bool __was_long, __now_long; 3276 if (__target_capacity == __min_cap - 1) 3277 { 3278 __was_long = true; 3279 __now_long = false; 3280 __new_data = __get_short_pointer(); 3281 __p = __get_long_pointer(); 3282 } 3283 else 3284 { 3285 if (__target_capacity > __cap) { 3286 auto __allocation = std::__allocate_at_least(__alloc(), __target_capacity + 1); 3287 __new_data = __allocation.ptr; 3288 __target_capacity = __allocation.count - 1; 3289 } 3290 else 3291 { 3292 #ifndef _LIBCPP_NO_EXCEPTIONS 3293 try 3294 { 3295 #endif // _LIBCPP_NO_EXCEPTIONS 3296 auto __allocation = std::__allocate_at_least(__alloc(), __target_capacity + 1); 3297 __new_data = __allocation.ptr; 3298 __target_capacity = __allocation.count - 1; 3299 #ifndef _LIBCPP_NO_EXCEPTIONS 3300 } 3301 catch (...) 3302 { 3303 return; 3304 } 3305 #else // _LIBCPP_NO_EXCEPTIONS 3306 if (__new_data == nullptr) 3307 return; 3308 #endif // _LIBCPP_NO_EXCEPTIONS 3309 } 3310 __now_long = true; 3311 __was_long = __is_long(); 3312 __p = __get_pointer(); 3313 } 3314 traits_type::copy(_VSTD::__to_address(__new_data), 3315 _VSTD::__to_address(__p), size()+1); 3316 if (__was_long) 3317 __alloc_traits::deallocate(__alloc(), __p, __cap+1); 3318 if (__now_long) 3319 { 3320 __set_long_cap(__target_capacity+1); 3321 __set_long_size(__sz); 3322 __set_long_pointer(__new_data); 3323 } 3324 else 3325 __set_short_size(__sz); 3326 __invalidate_all_iterators(); 3327} 3328 3329template <class _CharT, class _Traits, class _Allocator> 3330inline 3331typename basic_string<_CharT, _Traits, _Allocator>::const_reference 3332basic_string<_CharT, _Traits, _Allocator>::operator[](size_type __pos) const _NOEXCEPT 3333{ 3334 _LIBCPP_ASSERT(__pos <= size(), "string index out of bounds"); 3335 return *(data() + __pos); 3336} 3337 3338template <class _CharT, class _Traits, class _Allocator> 3339inline 3340typename basic_string<_CharT, _Traits, _Allocator>::reference 3341basic_string<_CharT, _Traits, _Allocator>::operator[](size_type __pos) _NOEXCEPT 3342{ 3343 _LIBCPP_ASSERT(__pos <= size(), "string index out of bounds"); 3344 return *(__get_pointer() + __pos); 3345} 3346 3347template <class _CharT, class _Traits, class _Allocator> 3348typename basic_string<_CharT, _Traits, _Allocator>::const_reference 3349basic_string<_CharT, _Traits, _Allocator>::at(size_type __n) const 3350{ 3351 if (__n >= size()) 3352 __throw_out_of_range(); 3353 return (*this)[__n]; 3354} 3355 3356template <class _CharT, class _Traits, class _Allocator> 3357typename basic_string<_CharT, _Traits, _Allocator>::reference 3358basic_string<_CharT, _Traits, _Allocator>::at(size_type __n) 3359{ 3360 if (__n >= size()) 3361 __throw_out_of_range(); 3362 return (*this)[__n]; 3363} 3364 3365template <class _CharT, class _Traits, class _Allocator> 3366inline 3367typename basic_string<_CharT, _Traits, _Allocator>::reference 3368basic_string<_CharT, _Traits, _Allocator>::front() _NOEXCEPT 3369{ 3370 _LIBCPP_ASSERT(!empty(), "string::front(): string is empty"); 3371 return *__get_pointer(); 3372} 3373 3374template <class _CharT, class _Traits, class _Allocator> 3375inline 3376typename basic_string<_CharT, _Traits, _Allocator>::const_reference 3377basic_string<_CharT, _Traits, _Allocator>::front() const _NOEXCEPT 3378{ 3379 _LIBCPP_ASSERT(!empty(), "string::front(): string is empty"); 3380 return *data(); 3381} 3382 3383template <class _CharT, class _Traits, class _Allocator> 3384inline 3385typename basic_string<_CharT, _Traits, _Allocator>::reference 3386basic_string<_CharT, _Traits, _Allocator>::back() _NOEXCEPT 3387{ 3388 _LIBCPP_ASSERT(!empty(), "string::back(): string is empty"); 3389 return *(__get_pointer() + size() - 1); 3390} 3391 3392template <class _CharT, class _Traits, class _Allocator> 3393inline 3394typename basic_string<_CharT, _Traits, _Allocator>::const_reference 3395basic_string<_CharT, _Traits, _Allocator>::back() const _NOEXCEPT 3396{ 3397 _LIBCPP_ASSERT(!empty(), "string::back(): string is empty"); 3398 return *(data() + size() - 1); 3399} 3400 3401template <class _CharT, class _Traits, class _Allocator> 3402typename basic_string<_CharT, _Traits, _Allocator>::size_type 3403basic_string<_CharT, _Traits, _Allocator>::copy(value_type* __s, size_type __n, size_type __pos) const 3404{ 3405 size_type __sz = size(); 3406 if (__pos > __sz) 3407 __throw_out_of_range(); 3408 size_type __rlen = _VSTD::min(__n, __sz - __pos); 3409 traits_type::copy(__s, data() + __pos, __rlen); 3410 return __rlen; 3411} 3412 3413template <class _CharT, class _Traits, class _Allocator> 3414inline 3415basic_string<_CharT, _Traits, _Allocator> 3416basic_string<_CharT, _Traits, _Allocator>::substr(size_type __pos, size_type __n) const 3417{ 3418 return basic_string(*this, __pos, __n, __alloc()); 3419} 3420 3421template <class _CharT, class _Traits, class _Allocator> 3422inline 3423void 3424basic_string<_CharT, _Traits, _Allocator>::swap(basic_string& __str) 3425#if _LIBCPP_STD_VER >= 14 3426 _NOEXCEPT 3427#else 3428 _NOEXCEPT_(!__alloc_traits::propagate_on_container_swap::value || 3429 __is_nothrow_swappable<allocator_type>::value) 3430#endif 3431{ 3432#if _LIBCPP_DEBUG_LEVEL == 2 3433 if (!__libcpp_is_constant_evaluated()) { 3434 if (!__is_long()) 3435 __get_db()->__invalidate_all(this); 3436 if (!__str.__is_long()) 3437 __get_db()->__invalidate_all(&__str); 3438 __get_db()->swap(this, &__str); 3439 } 3440#endif 3441 _LIBCPP_ASSERT( 3442 __alloc_traits::propagate_on_container_swap::value || 3443 __alloc_traits::is_always_equal::value || 3444 __alloc() == __str.__alloc(), "swapping non-equal allocators"); 3445 _VSTD::swap(__r_.first(), __str.__r_.first()); 3446 _VSTD::__swap_allocator(__alloc(), __str.__alloc()); 3447} 3448 3449// find 3450 3451template <class _Traits> 3452struct _LIBCPP_HIDDEN __traits_eq 3453{ 3454 typedef typename _Traits::char_type char_type; 3455 _LIBCPP_INLINE_VISIBILITY 3456 bool operator()(const char_type& __x, const char_type& __y) _NOEXCEPT 3457 {return _Traits::eq(__x, __y);} 3458}; 3459 3460template<class _CharT, class _Traits, class _Allocator> 3461typename basic_string<_CharT, _Traits, _Allocator>::size_type 3462basic_string<_CharT, _Traits, _Allocator>::find(const value_type* __s, 3463 size_type __pos, 3464 size_type __n) const _NOEXCEPT 3465{ 3466 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::find(): received nullptr"); 3467 return __str_find<value_type, size_type, traits_type, npos> 3468 (data(), size(), __s, __pos, __n); 3469} 3470 3471template<class _CharT, class _Traits, class _Allocator> 3472inline 3473typename basic_string<_CharT, _Traits, _Allocator>::size_type 3474basic_string<_CharT, _Traits, _Allocator>::find(const basic_string& __str, 3475 size_type __pos) const _NOEXCEPT 3476{ 3477 return __str_find<value_type, size_type, traits_type, npos> 3478 (data(), size(), __str.data(), __pos, __str.size()); 3479} 3480 3481template<class _CharT, class _Traits, class _Allocator> 3482template <class _Tp> 3483__enable_if_t 3484< 3485 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3486 typename basic_string<_CharT, _Traits, _Allocator>::size_type 3487> 3488basic_string<_CharT, _Traits, _Allocator>::find(const _Tp &__t, 3489 size_type __pos) const _NOEXCEPT 3490{ 3491 __self_view __sv = __t; 3492 return __str_find<value_type, size_type, traits_type, npos> 3493 (data(), size(), __sv.data(), __pos, __sv.size()); 3494} 3495 3496template<class _CharT, class _Traits, class _Allocator> 3497inline 3498typename basic_string<_CharT, _Traits, _Allocator>::size_type 3499basic_string<_CharT, _Traits, _Allocator>::find(const value_type* __s, 3500 size_type __pos) const _NOEXCEPT 3501{ 3502 _LIBCPP_ASSERT(__s != nullptr, "string::find(): received nullptr"); 3503 return __str_find<value_type, size_type, traits_type, npos> 3504 (data(), size(), __s, __pos, traits_type::length(__s)); 3505} 3506 3507template<class _CharT, class _Traits, class _Allocator> 3508typename basic_string<_CharT, _Traits, _Allocator>::size_type 3509basic_string<_CharT, _Traits, _Allocator>::find(value_type __c, 3510 size_type __pos) const _NOEXCEPT 3511{ 3512 return __str_find<value_type, size_type, traits_type, npos> 3513 (data(), size(), __c, __pos); 3514} 3515 3516// rfind 3517 3518template<class _CharT, class _Traits, class _Allocator> 3519typename basic_string<_CharT, _Traits, _Allocator>::size_type 3520basic_string<_CharT, _Traits, _Allocator>::rfind(const value_type* __s, 3521 size_type __pos, 3522 size_type __n) const _NOEXCEPT 3523{ 3524 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::rfind(): received nullptr"); 3525 return __str_rfind<value_type, size_type, traits_type, npos> 3526 (data(), size(), __s, __pos, __n); 3527} 3528 3529template<class _CharT, class _Traits, class _Allocator> 3530inline 3531typename basic_string<_CharT, _Traits, _Allocator>::size_type 3532basic_string<_CharT, _Traits, _Allocator>::rfind(const basic_string& __str, 3533 size_type __pos) const _NOEXCEPT 3534{ 3535 return __str_rfind<value_type, size_type, traits_type, npos> 3536 (data(), size(), __str.data(), __pos, __str.size()); 3537} 3538 3539template<class _CharT, class _Traits, class _Allocator> 3540template <class _Tp> 3541__enable_if_t 3542< 3543 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3544 typename basic_string<_CharT, _Traits, _Allocator>::size_type 3545> 3546basic_string<_CharT, _Traits, _Allocator>::rfind(const _Tp& __t, 3547 size_type __pos) const _NOEXCEPT 3548{ 3549 __self_view __sv = __t; 3550 return __str_rfind<value_type, size_type, traits_type, npos> 3551 (data(), size(), __sv.data(), __pos, __sv.size()); 3552} 3553 3554template<class _CharT, class _Traits, class _Allocator> 3555inline 3556typename basic_string<_CharT, _Traits, _Allocator>::size_type 3557basic_string<_CharT, _Traits, _Allocator>::rfind(const value_type* __s, 3558 size_type __pos) const _NOEXCEPT 3559{ 3560 _LIBCPP_ASSERT(__s != nullptr, "string::rfind(): received nullptr"); 3561 return __str_rfind<value_type, size_type, traits_type, npos> 3562 (data(), size(), __s, __pos, traits_type::length(__s)); 3563} 3564 3565template<class _CharT, class _Traits, class _Allocator> 3566typename basic_string<_CharT, _Traits, _Allocator>::size_type 3567basic_string<_CharT, _Traits, _Allocator>::rfind(value_type __c, 3568 size_type __pos) const _NOEXCEPT 3569{ 3570 return __str_rfind<value_type, size_type, traits_type, npos> 3571 (data(), size(), __c, __pos); 3572} 3573 3574// find_first_of 3575 3576template<class _CharT, class _Traits, class _Allocator> 3577typename basic_string<_CharT, _Traits, _Allocator>::size_type 3578basic_string<_CharT, _Traits, _Allocator>::find_first_of(const value_type* __s, 3579 size_type __pos, 3580 size_type __n) const _NOEXCEPT 3581{ 3582 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::find_first_of(): received nullptr"); 3583 return __str_find_first_of<value_type, size_type, traits_type, npos> 3584 (data(), size(), __s, __pos, __n); 3585} 3586 3587template<class _CharT, class _Traits, class _Allocator> 3588inline 3589typename basic_string<_CharT, _Traits, _Allocator>::size_type 3590basic_string<_CharT, _Traits, _Allocator>::find_first_of(const basic_string& __str, 3591 size_type __pos) const _NOEXCEPT 3592{ 3593 return __str_find_first_of<value_type, size_type, traits_type, npos> 3594 (data(), size(), __str.data(), __pos, __str.size()); 3595} 3596 3597template<class _CharT, class _Traits, class _Allocator> 3598template <class _Tp> 3599__enable_if_t 3600< 3601 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3602 typename basic_string<_CharT, _Traits, _Allocator>::size_type 3603> 3604basic_string<_CharT, _Traits, _Allocator>::find_first_of(const _Tp& __t, 3605 size_type __pos) const _NOEXCEPT 3606{ 3607 __self_view __sv = __t; 3608 return __str_find_first_of<value_type, size_type, traits_type, npos> 3609 (data(), size(), __sv.data(), __pos, __sv.size()); 3610} 3611 3612template<class _CharT, class _Traits, class _Allocator> 3613inline 3614typename basic_string<_CharT, _Traits, _Allocator>::size_type 3615basic_string<_CharT, _Traits, _Allocator>::find_first_of(const value_type* __s, 3616 size_type __pos) const _NOEXCEPT 3617{ 3618 _LIBCPP_ASSERT(__s != nullptr, "string::find_first_of(): received nullptr"); 3619 return __str_find_first_of<value_type, size_type, traits_type, npos> 3620 (data(), size(), __s, __pos, traits_type::length(__s)); 3621} 3622 3623template<class _CharT, class _Traits, class _Allocator> 3624inline 3625typename basic_string<_CharT, _Traits, _Allocator>::size_type 3626basic_string<_CharT, _Traits, _Allocator>::find_first_of(value_type __c, 3627 size_type __pos) const _NOEXCEPT 3628{ 3629 return find(__c, __pos); 3630} 3631 3632// find_last_of 3633 3634template<class _CharT, class _Traits, class _Allocator> 3635typename basic_string<_CharT, _Traits, _Allocator>::size_type 3636basic_string<_CharT, _Traits, _Allocator>::find_last_of(const value_type* __s, 3637 size_type __pos, 3638 size_type __n) const _NOEXCEPT 3639{ 3640 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::find_last_of(): received nullptr"); 3641 return __str_find_last_of<value_type, size_type, traits_type, npos> 3642 (data(), size(), __s, __pos, __n); 3643} 3644 3645template<class _CharT, class _Traits, class _Allocator> 3646inline 3647typename basic_string<_CharT, _Traits, _Allocator>::size_type 3648basic_string<_CharT, _Traits, _Allocator>::find_last_of(const basic_string& __str, 3649 size_type __pos) const _NOEXCEPT 3650{ 3651 return __str_find_last_of<value_type, size_type, traits_type, npos> 3652 (data(), size(), __str.data(), __pos, __str.size()); 3653} 3654 3655template<class _CharT, class _Traits, class _Allocator> 3656template <class _Tp> 3657__enable_if_t 3658< 3659 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3660 typename basic_string<_CharT, _Traits, _Allocator>::size_type 3661> 3662basic_string<_CharT, _Traits, _Allocator>::find_last_of(const _Tp& __t, 3663 size_type __pos) const _NOEXCEPT 3664{ 3665 __self_view __sv = __t; 3666 return __str_find_last_of<value_type, size_type, traits_type, npos> 3667 (data(), size(), __sv.data(), __pos, __sv.size()); 3668} 3669 3670template<class _CharT, class _Traits, class _Allocator> 3671inline 3672typename basic_string<_CharT, _Traits, _Allocator>::size_type 3673basic_string<_CharT, _Traits, _Allocator>::find_last_of(const value_type* __s, 3674 size_type __pos) const _NOEXCEPT 3675{ 3676 _LIBCPP_ASSERT(__s != nullptr, "string::find_last_of(): received nullptr"); 3677 return __str_find_last_of<value_type, size_type, traits_type, npos> 3678 (data(), size(), __s, __pos, traits_type::length(__s)); 3679} 3680 3681template<class _CharT, class _Traits, class _Allocator> 3682inline 3683typename basic_string<_CharT, _Traits, _Allocator>::size_type 3684basic_string<_CharT, _Traits, _Allocator>::find_last_of(value_type __c, 3685 size_type __pos) const _NOEXCEPT 3686{ 3687 return rfind(__c, __pos); 3688} 3689 3690// find_first_not_of 3691 3692template<class _CharT, class _Traits, class _Allocator> 3693typename basic_string<_CharT, _Traits, _Allocator>::size_type 3694basic_string<_CharT, _Traits, _Allocator>::find_first_not_of(const value_type* __s, 3695 size_type __pos, 3696 size_type __n) const _NOEXCEPT 3697{ 3698 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::find_first_not_of(): received nullptr"); 3699 return __str_find_first_not_of<value_type, size_type, traits_type, npos> 3700 (data(), size(), __s, __pos, __n); 3701} 3702 3703template<class _CharT, class _Traits, class _Allocator> 3704inline 3705typename basic_string<_CharT, _Traits, _Allocator>::size_type 3706basic_string<_CharT, _Traits, _Allocator>::find_first_not_of(const basic_string& __str, 3707 size_type __pos) const _NOEXCEPT 3708{ 3709 return __str_find_first_not_of<value_type, size_type, traits_type, npos> 3710 (data(), size(), __str.data(), __pos, __str.size()); 3711} 3712 3713template<class _CharT, class _Traits, class _Allocator> 3714template <class _Tp> 3715__enable_if_t 3716< 3717 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3718 typename basic_string<_CharT, _Traits, _Allocator>::size_type 3719> 3720basic_string<_CharT, _Traits, _Allocator>::find_first_not_of(const _Tp& __t, 3721 size_type __pos) const _NOEXCEPT 3722{ 3723 __self_view __sv = __t; 3724 return __str_find_first_not_of<value_type, size_type, traits_type, npos> 3725 (data(), size(), __sv.data(), __pos, __sv.size()); 3726} 3727 3728template<class _CharT, class _Traits, class _Allocator> 3729inline 3730typename basic_string<_CharT, _Traits, _Allocator>::size_type 3731basic_string<_CharT, _Traits, _Allocator>::find_first_not_of(const value_type* __s, 3732 size_type __pos) const _NOEXCEPT 3733{ 3734 _LIBCPP_ASSERT(__s != nullptr, "string::find_first_not_of(): received nullptr"); 3735 return __str_find_first_not_of<value_type, size_type, traits_type, npos> 3736 (data(), size(), __s, __pos, traits_type::length(__s)); 3737} 3738 3739template<class _CharT, class _Traits, class _Allocator> 3740inline 3741typename basic_string<_CharT, _Traits, _Allocator>::size_type 3742basic_string<_CharT, _Traits, _Allocator>::find_first_not_of(value_type __c, 3743 size_type __pos) const _NOEXCEPT 3744{ 3745 return __str_find_first_not_of<value_type, size_type, traits_type, npos> 3746 (data(), size(), __c, __pos); 3747} 3748 3749// find_last_not_of 3750 3751template<class _CharT, class _Traits, class _Allocator> 3752typename basic_string<_CharT, _Traits, _Allocator>::size_type 3753basic_string<_CharT, _Traits, _Allocator>::find_last_not_of(const value_type* __s, 3754 size_type __pos, 3755 size_type __n) const _NOEXCEPT 3756{ 3757 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::find_last_not_of(): received nullptr"); 3758 return __str_find_last_not_of<value_type, size_type, traits_type, npos> 3759 (data(), size(), __s, __pos, __n); 3760} 3761 3762template<class _CharT, class _Traits, class _Allocator> 3763inline 3764typename basic_string<_CharT, _Traits, _Allocator>::size_type 3765basic_string<_CharT, _Traits, _Allocator>::find_last_not_of(const basic_string& __str, 3766 size_type __pos) const _NOEXCEPT 3767{ 3768 return __str_find_last_not_of<value_type, size_type, traits_type, npos> 3769 (data(), size(), __str.data(), __pos, __str.size()); 3770} 3771 3772template<class _CharT, class _Traits, class _Allocator> 3773template <class _Tp> 3774__enable_if_t 3775< 3776 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3777 typename basic_string<_CharT, _Traits, _Allocator>::size_type 3778> 3779basic_string<_CharT, _Traits, _Allocator>::find_last_not_of(const _Tp& __t, 3780 size_type __pos) const _NOEXCEPT 3781{ 3782 __self_view __sv = __t; 3783 return __str_find_last_not_of<value_type, size_type, traits_type, npos> 3784 (data(), size(), __sv.data(), __pos, __sv.size()); 3785} 3786 3787template<class _CharT, class _Traits, class _Allocator> 3788inline 3789typename basic_string<_CharT, _Traits, _Allocator>::size_type 3790basic_string<_CharT, _Traits, _Allocator>::find_last_not_of(const value_type* __s, 3791 size_type __pos) const _NOEXCEPT 3792{ 3793 _LIBCPP_ASSERT(__s != nullptr, "string::find_last_not_of(): received nullptr"); 3794 return __str_find_last_not_of<value_type, size_type, traits_type, npos> 3795 (data(), size(), __s, __pos, traits_type::length(__s)); 3796} 3797 3798template<class _CharT, class _Traits, class _Allocator> 3799inline 3800typename basic_string<_CharT, _Traits, _Allocator>::size_type 3801basic_string<_CharT, _Traits, _Allocator>::find_last_not_of(value_type __c, 3802 size_type __pos) const _NOEXCEPT 3803{ 3804 return __str_find_last_not_of<value_type, size_type, traits_type, npos> 3805 (data(), size(), __c, __pos); 3806} 3807 3808// compare 3809 3810template <class _CharT, class _Traits, class _Allocator> 3811template <class _Tp> 3812__enable_if_t 3813< 3814 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3815 int 3816> 3817basic_string<_CharT, _Traits, _Allocator>::compare(const _Tp& __t) const _NOEXCEPT 3818{ 3819 __self_view __sv = __t; 3820 size_t __lhs_sz = size(); 3821 size_t __rhs_sz = __sv.size(); 3822 int __result = traits_type::compare(data(), __sv.data(), 3823 _VSTD::min(__lhs_sz, __rhs_sz)); 3824 if (__result != 0) 3825 return __result; 3826 if (__lhs_sz < __rhs_sz) 3827 return -1; 3828 if (__lhs_sz > __rhs_sz) 3829 return 1; 3830 return 0; 3831} 3832 3833template <class _CharT, class _Traits, class _Allocator> 3834inline 3835int 3836basic_string<_CharT, _Traits, _Allocator>::compare(const basic_string& __str) const _NOEXCEPT 3837{ 3838 return compare(__self_view(__str)); 3839} 3840 3841template <class _CharT, class _Traits, class _Allocator> 3842int 3843basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1, 3844 size_type __n1, 3845 const value_type* __s, 3846 size_type __n2) const 3847{ 3848 _LIBCPP_ASSERT(__n2 == 0 || __s != nullptr, "string::compare(): received nullptr"); 3849 size_type __sz = size(); 3850 if (__pos1 > __sz || __n2 == npos) 3851 __throw_out_of_range(); 3852 size_type __rlen = _VSTD::min(__n1, __sz - __pos1); 3853 int __r = traits_type::compare(data() + __pos1, __s, _VSTD::min(__rlen, __n2)); 3854 if (__r == 0) 3855 { 3856 if (__rlen < __n2) 3857 __r = -1; 3858 else if (__rlen > __n2) 3859 __r = 1; 3860 } 3861 return __r; 3862} 3863 3864template <class _CharT, class _Traits, class _Allocator> 3865template <class _Tp> 3866__enable_if_t 3867< 3868 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3869 int 3870> 3871basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1, 3872 size_type __n1, 3873 const _Tp& __t) const 3874{ 3875 __self_view __sv = __t; 3876 return compare(__pos1, __n1, __sv.data(), __sv.size()); 3877} 3878 3879template <class _CharT, class _Traits, class _Allocator> 3880inline 3881int 3882basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1, 3883 size_type __n1, 3884 const basic_string& __str) const 3885{ 3886 return compare(__pos1, __n1, __str.data(), __str.size()); 3887} 3888 3889template <class _CharT, class _Traits, class _Allocator> 3890template <class _Tp> 3891__enable_if_t 3892< 3893 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value 3894 && !__is_same_uncvref<_Tp, basic_string<_CharT, _Traits, _Allocator> >::value, 3895 int 3896> 3897basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1, 3898 size_type __n1, 3899 const _Tp& __t, 3900 size_type __pos2, 3901 size_type __n2) const 3902{ 3903 __self_view __sv = __t; 3904 return __self_view(*this).substr(__pos1, __n1).compare(__sv.substr(__pos2, __n2)); 3905} 3906 3907template <class _CharT, class _Traits, class _Allocator> 3908int 3909basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1, 3910 size_type __n1, 3911 const basic_string& __str, 3912 size_type __pos2, 3913 size_type __n2) const 3914{ 3915 return compare(__pos1, __n1, __self_view(__str), __pos2, __n2); 3916} 3917 3918template <class _CharT, class _Traits, class _Allocator> 3919int 3920basic_string<_CharT, _Traits, _Allocator>::compare(const value_type* __s) const _NOEXCEPT 3921{ 3922 _LIBCPP_ASSERT(__s != nullptr, "string::compare(): received nullptr"); 3923 return compare(0, npos, __s, traits_type::length(__s)); 3924} 3925 3926template <class _CharT, class _Traits, class _Allocator> 3927int 3928basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1, 3929 size_type __n1, 3930 const value_type* __s) const 3931{ 3932 _LIBCPP_ASSERT(__s != nullptr, "string::compare(): received nullptr"); 3933 return compare(__pos1, __n1, __s, traits_type::length(__s)); 3934} 3935 3936// __invariants 3937 3938template<class _CharT, class _Traits, class _Allocator> 3939inline 3940bool 3941basic_string<_CharT, _Traits, _Allocator>::__invariants() const 3942{ 3943 if (size() > capacity()) 3944 return false; 3945 if (capacity() < __min_cap - 1) 3946 return false; 3947 if (data() == nullptr) 3948 return false; 3949 if (data()[size()] != value_type()) 3950 return false; 3951 return true; 3952} 3953 3954// __clear_and_shrink 3955 3956template<class _CharT, class _Traits, class _Allocator> 3957inline 3958void 3959basic_string<_CharT, _Traits, _Allocator>::__clear_and_shrink() _NOEXCEPT 3960{ 3961 clear(); 3962 if(__is_long()) 3963 { 3964 __alloc_traits::deallocate(__alloc(), __get_long_pointer(), capacity() + 1); 3965 __set_long_cap(0); 3966 __set_short_size(0); 3967 traits_type::assign(*__get_short_pointer(), value_type()); 3968 } 3969} 3970 3971// operator== 3972 3973template<class _CharT, class _Traits, class _Allocator> 3974inline _LIBCPP_INLINE_VISIBILITY 3975bool 3976operator==(const basic_string<_CharT, _Traits, _Allocator>& __lhs, 3977 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 3978{ 3979 size_t __lhs_sz = __lhs.size(); 3980 return __lhs_sz == __rhs.size() && _Traits::compare(__lhs.data(), 3981 __rhs.data(), 3982 __lhs_sz) == 0; 3983} 3984 3985template<class _Allocator> 3986inline _LIBCPP_INLINE_VISIBILITY 3987bool 3988operator==(const basic_string<char, char_traits<char>, _Allocator>& __lhs, 3989 const basic_string<char, char_traits<char>, _Allocator>& __rhs) _NOEXCEPT 3990{ 3991 size_t __lhs_sz = __lhs.size(); 3992 if (__lhs_sz != __rhs.size()) 3993 return false; 3994 const char* __lp = __lhs.data(); 3995 const char* __rp = __rhs.data(); 3996 if (__lhs.__is_long()) 3997 return char_traits<char>::compare(__lp, __rp, __lhs_sz) == 0; 3998 for (; __lhs_sz != 0; --__lhs_sz, ++__lp, ++__rp) 3999 if (*__lp != *__rp) 4000 return false; 4001 return true; 4002} 4003 4004template<class _CharT, class _Traits, class _Allocator> 4005inline _LIBCPP_INLINE_VISIBILITY 4006bool 4007operator==(const _CharT* __lhs, 4008 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4009{ 4010 typedef basic_string<_CharT, _Traits, _Allocator> _String; 4011 _LIBCPP_ASSERT(__lhs != nullptr, "operator==(char*, basic_string): received nullptr"); 4012 size_t __lhs_len = _Traits::length(__lhs); 4013 if (__lhs_len != __rhs.size()) return false; 4014 return __rhs.compare(0, _String::npos, __lhs, __lhs_len) == 0; 4015} 4016 4017template<class _CharT, class _Traits, class _Allocator> 4018inline _LIBCPP_INLINE_VISIBILITY 4019bool 4020operator==(const basic_string<_CharT,_Traits,_Allocator>& __lhs, 4021 const _CharT* __rhs) _NOEXCEPT 4022{ 4023 typedef basic_string<_CharT, _Traits, _Allocator> _String; 4024 _LIBCPP_ASSERT(__rhs != nullptr, "operator==(basic_string, char*): received nullptr"); 4025 size_t __rhs_len = _Traits::length(__rhs); 4026 if (__rhs_len != __lhs.size()) return false; 4027 return __lhs.compare(0, _String::npos, __rhs, __rhs_len) == 0; 4028} 4029 4030template<class _CharT, class _Traits, class _Allocator> 4031inline _LIBCPP_INLINE_VISIBILITY 4032bool 4033operator!=(const basic_string<_CharT,_Traits,_Allocator>& __lhs, 4034 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4035{ 4036 return !(__lhs == __rhs); 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 return !(__lhs == __rhs); 4046} 4047 4048template<class _CharT, class _Traits, class _Allocator> 4049inline _LIBCPP_INLINE_VISIBILITY 4050bool 4051operator!=(const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4052 const _CharT* __rhs) _NOEXCEPT 4053{ 4054 return !(__lhs == __rhs); 4055} 4056 4057// operator< 4058 4059template<class _CharT, class _Traits, class _Allocator> 4060inline _LIBCPP_INLINE_VISIBILITY 4061bool 4062operator< (const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4063 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4064{ 4065 return __lhs.compare(__rhs) < 0; 4066} 4067 4068template<class _CharT, class _Traits, class _Allocator> 4069inline _LIBCPP_INLINE_VISIBILITY 4070bool 4071operator< (const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4072 const _CharT* __rhs) _NOEXCEPT 4073{ 4074 return __lhs.compare(__rhs) < 0; 4075} 4076 4077template<class _CharT, class _Traits, class _Allocator> 4078inline _LIBCPP_INLINE_VISIBILITY 4079bool 4080operator< (const _CharT* __lhs, 4081 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4082{ 4083 return __rhs.compare(__lhs) > 0; 4084} 4085 4086// operator> 4087 4088template<class _CharT, class _Traits, class _Allocator> 4089inline _LIBCPP_INLINE_VISIBILITY 4090bool 4091operator> (const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4092 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4093{ 4094 return __rhs < __lhs; 4095} 4096 4097template<class _CharT, class _Traits, class _Allocator> 4098inline _LIBCPP_INLINE_VISIBILITY 4099bool 4100operator> (const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4101 const _CharT* __rhs) _NOEXCEPT 4102{ 4103 return __rhs < __lhs; 4104} 4105 4106template<class _CharT, class _Traits, class _Allocator> 4107inline _LIBCPP_INLINE_VISIBILITY 4108bool 4109operator> (const _CharT* __lhs, 4110 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4111{ 4112 return __rhs < __lhs; 4113} 4114 4115// operator<= 4116 4117template<class _CharT, class _Traits, class _Allocator> 4118inline _LIBCPP_INLINE_VISIBILITY 4119bool 4120operator<=(const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4121 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4122{ 4123 return !(__rhs < __lhs); 4124} 4125 4126template<class _CharT, class _Traits, class _Allocator> 4127inline _LIBCPP_INLINE_VISIBILITY 4128bool 4129operator<=(const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4130 const _CharT* __rhs) _NOEXCEPT 4131{ 4132 return !(__rhs < __lhs); 4133} 4134 4135template<class _CharT, class _Traits, class _Allocator> 4136inline _LIBCPP_INLINE_VISIBILITY 4137bool 4138operator<=(const _CharT* __lhs, 4139 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4140{ 4141 return !(__rhs < __lhs); 4142} 4143 4144// operator>= 4145 4146template<class _CharT, class _Traits, class _Allocator> 4147inline _LIBCPP_INLINE_VISIBILITY 4148bool 4149operator>=(const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4150 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4151{ 4152 return !(__lhs < __rhs); 4153} 4154 4155template<class _CharT, class _Traits, class _Allocator> 4156inline _LIBCPP_INLINE_VISIBILITY 4157bool 4158operator>=(const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4159 const _CharT* __rhs) _NOEXCEPT 4160{ 4161 return !(__lhs < __rhs); 4162} 4163 4164template<class _CharT, class _Traits, class _Allocator> 4165inline _LIBCPP_INLINE_VISIBILITY 4166bool 4167operator>=(const _CharT* __lhs, 4168 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4169{ 4170 return !(__lhs < __rhs); 4171} 4172 4173// operator + 4174 4175template<class _CharT, class _Traits, class _Allocator> 4176basic_string<_CharT, _Traits, _Allocator> 4177operator+(const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4178 const basic_string<_CharT, _Traits, _Allocator>& __rhs) 4179{ 4180 using _String = basic_string<_CharT, _Traits, _Allocator>; 4181 auto __lhs_sz = __lhs.size(); 4182 auto __rhs_sz = __rhs.size(); 4183 _String __r(__uninitialized_size_tag(), 4184 __lhs_sz + __rhs_sz, 4185 _String::__alloc_traits::select_on_container_copy_construction(__lhs.get_allocator())); 4186 auto __ptr = std::__to_address(__r.__get_pointer()); 4187 _Traits::copy(__ptr, __lhs.data(), __lhs_sz); 4188 _Traits::copy(__ptr + __lhs_sz, __rhs.data(), __rhs_sz); 4189 _Traits::assign(__ptr + __lhs_sz + __rhs_sz, 1, _CharT()); 4190 return __r; 4191} 4192 4193template<class _CharT, class _Traits, class _Allocator> 4194basic_string<_CharT, _Traits, _Allocator> 4195operator+(const _CharT* __lhs , const basic_string<_CharT,_Traits,_Allocator>& __rhs) 4196{ 4197 using _String = basic_string<_CharT, _Traits, _Allocator>; 4198 auto __lhs_sz = _Traits::length(__lhs); 4199 auto __rhs_sz = __rhs.size(); 4200 _String __r(__uninitialized_size_tag(), 4201 __lhs_sz + __rhs_sz, 4202 _String::__alloc_traits::select_on_container_copy_construction(__rhs.get_allocator())); 4203 auto __ptr = std::__to_address(__r.__get_pointer()); 4204 _Traits::copy(__ptr, __lhs, __lhs_sz); 4205 _Traits::copy(__ptr + __lhs_sz, __rhs.data(), __rhs_sz); 4206 _Traits::assign(__ptr + __lhs_sz + __rhs_sz, 1, _CharT()); 4207 return __r; 4208} 4209 4210template<class _CharT, class _Traits, class _Allocator> 4211basic_string<_CharT, _Traits, _Allocator> 4212operator+(_CharT __lhs, const basic_string<_CharT,_Traits,_Allocator>& __rhs) 4213{ 4214 using _String = basic_string<_CharT, _Traits, _Allocator>; 4215 typename _String::size_type __rhs_sz = __rhs.size(); 4216 _String __r(__uninitialized_size_tag(), 4217 __rhs_sz + 1, 4218 _String::__alloc_traits::select_on_container_copy_construction(__rhs.get_allocator())); 4219 auto __ptr = std::__to_address(__r.__get_pointer()); 4220 _Traits::assign(__ptr, 1, __lhs); 4221 _Traits::copy(__ptr + 1, __rhs.data(), __rhs_sz); 4222 _Traits::assign(__ptr + 1 + __rhs_sz, 1, _CharT()); 4223 return __r; 4224} 4225 4226template<class _CharT, class _Traits, class _Allocator> 4227inline 4228basic_string<_CharT, _Traits, _Allocator> 4229operator+(const basic_string<_CharT, _Traits, _Allocator>& __lhs, const _CharT* __rhs) 4230{ 4231 using _String = basic_string<_CharT, _Traits, _Allocator>; 4232 typename _String::size_type __lhs_sz = __lhs.size(); 4233 typename _String::size_type __rhs_sz = _Traits::length(__rhs); 4234 _String __r(__uninitialized_size_tag(), 4235 __lhs_sz + __rhs_sz, 4236 _String::__alloc_traits::select_on_container_copy_construction(__lhs.get_allocator())); 4237 auto __ptr = std::__to_address(__r.__get_pointer()); 4238 _Traits::copy(__ptr, __lhs.data(), __lhs_sz); 4239 _Traits::copy(__ptr + __lhs_sz, __rhs, __rhs_sz); 4240 _Traits::assign(__ptr + __lhs_sz + __rhs_sz, 1, _CharT()); 4241 return __r; 4242} 4243 4244template<class _CharT, class _Traits, class _Allocator> 4245basic_string<_CharT, _Traits, _Allocator> 4246operator+(const basic_string<_CharT, _Traits, _Allocator>& __lhs, _CharT __rhs) 4247{ 4248 using _String = basic_string<_CharT, _Traits, _Allocator>; 4249 typename _String::size_type __lhs_sz = __lhs.size(); 4250 _String __r(__uninitialized_size_tag(), 4251 __lhs_sz + 1, 4252 _String::__alloc_traits::select_on_container_copy_construction(__lhs.get_allocator())); 4253 auto __ptr = std::__to_address(__r.__get_pointer()); 4254 _Traits::copy(__ptr, __lhs.data(), __lhs_sz); 4255 _Traits::assign(__ptr + __lhs_sz, 1, __rhs); 4256 _Traits::assign(__ptr + 1 + __lhs_sz, 1, _CharT()); 4257 return __r; 4258} 4259 4260#ifndef _LIBCPP_CXX03_LANG 4261 4262template<class _CharT, class _Traits, class _Allocator> 4263inline _LIBCPP_INLINE_VISIBILITY 4264basic_string<_CharT, _Traits, _Allocator> 4265operator+(basic_string<_CharT, _Traits, _Allocator>&& __lhs, const basic_string<_CharT, _Traits, _Allocator>& __rhs) 4266{ 4267 return _VSTD::move(__lhs.append(__rhs)); 4268} 4269 4270template<class _CharT, class _Traits, class _Allocator> 4271inline _LIBCPP_INLINE_VISIBILITY 4272basic_string<_CharT, _Traits, _Allocator> 4273operator+(const basic_string<_CharT, _Traits, _Allocator>& __lhs, basic_string<_CharT, _Traits, _Allocator>&& __rhs) 4274{ 4275 return _VSTD::move(__rhs.insert(0, __lhs)); 4276} 4277 4278template<class _CharT, class _Traits, class _Allocator> 4279inline _LIBCPP_INLINE_VISIBILITY 4280basic_string<_CharT, _Traits, _Allocator> 4281operator+(basic_string<_CharT, _Traits, _Allocator>&& __lhs, basic_string<_CharT, _Traits, _Allocator>&& __rhs) 4282{ 4283 return _VSTD::move(__lhs.append(__rhs)); 4284} 4285 4286template<class _CharT, class _Traits, class _Allocator> 4287inline _LIBCPP_INLINE_VISIBILITY 4288basic_string<_CharT, _Traits, _Allocator> 4289operator+(const _CharT* __lhs , basic_string<_CharT,_Traits,_Allocator>&& __rhs) 4290{ 4291 return _VSTD::move(__rhs.insert(0, __lhs)); 4292} 4293 4294template<class _CharT, class _Traits, class _Allocator> 4295inline _LIBCPP_INLINE_VISIBILITY 4296basic_string<_CharT, _Traits, _Allocator> 4297operator+(_CharT __lhs, basic_string<_CharT,_Traits,_Allocator>&& __rhs) 4298{ 4299 __rhs.insert(__rhs.begin(), __lhs); 4300 return _VSTD::move(__rhs); 4301} 4302 4303template<class _CharT, class _Traits, class _Allocator> 4304inline _LIBCPP_INLINE_VISIBILITY 4305basic_string<_CharT, _Traits, _Allocator> 4306operator+(basic_string<_CharT, _Traits, _Allocator>&& __lhs, const _CharT* __rhs) 4307{ 4308 return _VSTD::move(__lhs.append(__rhs)); 4309} 4310 4311template<class _CharT, class _Traits, class _Allocator> 4312inline _LIBCPP_INLINE_VISIBILITY 4313basic_string<_CharT, _Traits, _Allocator> 4314operator+(basic_string<_CharT, _Traits, _Allocator>&& __lhs, _CharT __rhs) 4315{ 4316 __lhs.push_back(__rhs); 4317 return _VSTD::move(__lhs); 4318} 4319 4320#endif // _LIBCPP_CXX03_LANG 4321 4322// swap 4323 4324template<class _CharT, class _Traits, class _Allocator> 4325inline _LIBCPP_INLINE_VISIBILITY 4326void 4327swap(basic_string<_CharT, _Traits, _Allocator>& __lhs, 4328 basic_string<_CharT, _Traits, _Allocator>& __rhs) 4329 _NOEXCEPT_(_NOEXCEPT_(__lhs.swap(__rhs))) 4330{ 4331 __lhs.swap(__rhs); 4332} 4333 4334_LIBCPP_FUNC_VIS int stoi (const string& __str, size_t* __idx = nullptr, int __base = 10); 4335_LIBCPP_FUNC_VIS long stol (const string& __str, size_t* __idx = nullptr, int __base = 10); 4336_LIBCPP_FUNC_VIS unsigned long stoul (const string& __str, size_t* __idx = nullptr, int __base = 10); 4337_LIBCPP_FUNC_VIS long long stoll (const string& __str, size_t* __idx = nullptr, int __base = 10); 4338_LIBCPP_FUNC_VIS unsigned long long stoull(const string& __str, size_t* __idx = nullptr, int __base = 10); 4339 4340_LIBCPP_FUNC_VIS float stof (const string& __str, size_t* __idx = nullptr); 4341_LIBCPP_FUNC_VIS double stod (const string& __str, size_t* __idx = nullptr); 4342_LIBCPP_FUNC_VIS long double stold(const string& __str, size_t* __idx = nullptr); 4343 4344_LIBCPP_FUNC_VIS string to_string(int __val); 4345_LIBCPP_FUNC_VIS string to_string(unsigned __val); 4346_LIBCPP_FUNC_VIS string to_string(long __val); 4347_LIBCPP_FUNC_VIS string to_string(unsigned long __val); 4348_LIBCPP_FUNC_VIS string to_string(long long __val); 4349_LIBCPP_FUNC_VIS string to_string(unsigned long long __val); 4350_LIBCPP_FUNC_VIS string to_string(float __val); 4351_LIBCPP_FUNC_VIS string to_string(double __val); 4352_LIBCPP_FUNC_VIS string to_string(long double __val); 4353 4354#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 4355_LIBCPP_FUNC_VIS int stoi (const wstring& __str, size_t* __idx = nullptr, int __base = 10); 4356_LIBCPP_FUNC_VIS long stol (const wstring& __str, size_t* __idx = nullptr, int __base = 10); 4357_LIBCPP_FUNC_VIS unsigned long stoul (const wstring& __str, size_t* __idx = nullptr, int __base = 10); 4358_LIBCPP_FUNC_VIS long long stoll (const wstring& __str, size_t* __idx = nullptr, int __base = 10); 4359_LIBCPP_FUNC_VIS unsigned long long stoull(const wstring& __str, size_t* __idx = nullptr, int __base = 10); 4360 4361_LIBCPP_FUNC_VIS float stof (const wstring& __str, size_t* __idx = nullptr); 4362_LIBCPP_FUNC_VIS double stod (const wstring& __str, size_t* __idx = nullptr); 4363_LIBCPP_FUNC_VIS long double stold(const wstring& __str, size_t* __idx = nullptr); 4364 4365_LIBCPP_FUNC_VIS wstring to_wstring(int __val); 4366_LIBCPP_FUNC_VIS wstring to_wstring(unsigned __val); 4367_LIBCPP_FUNC_VIS wstring to_wstring(long __val); 4368_LIBCPP_FUNC_VIS wstring to_wstring(unsigned long __val); 4369_LIBCPP_FUNC_VIS wstring to_wstring(long long __val); 4370_LIBCPP_FUNC_VIS wstring to_wstring(unsigned long long __val); 4371_LIBCPP_FUNC_VIS wstring to_wstring(float __val); 4372_LIBCPP_FUNC_VIS wstring to_wstring(double __val); 4373_LIBCPP_FUNC_VIS wstring to_wstring(long double __val); 4374#endif // _LIBCPP_HAS_NO_WIDE_CHARACTERS 4375 4376template<class _CharT, class _Traits, class _Allocator> 4377_LIBCPP_TEMPLATE_DATA_VIS 4378const typename basic_string<_CharT, _Traits, _Allocator>::size_type 4379 basic_string<_CharT, _Traits, _Allocator>::npos; 4380 4381template <class _CharT, class _Allocator> 4382struct _LIBCPP_TEMPLATE_VIS 4383 hash<basic_string<_CharT, char_traits<_CharT>, _Allocator> > 4384 : public unary_function< 4385 basic_string<_CharT, char_traits<_CharT>, _Allocator>, size_t> 4386{ 4387 size_t 4388 operator()(const basic_string<_CharT, char_traits<_CharT>, _Allocator>& __val) const _NOEXCEPT 4389 { return __do_string_hash(__val.data(), __val.data() + __val.size()); } 4390}; 4391 4392 4393template<class _CharT, class _Traits, class _Allocator> 4394basic_ostream<_CharT, _Traits>& 4395operator<<(basic_ostream<_CharT, _Traits>& __os, 4396 const basic_string<_CharT, _Traits, _Allocator>& __str); 4397 4398template<class _CharT, class _Traits, class _Allocator> 4399basic_istream<_CharT, _Traits>& 4400operator>>(basic_istream<_CharT, _Traits>& __is, 4401 basic_string<_CharT, _Traits, _Allocator>& __str); 4402 4403template<class _CharT, class _Traits, class _Allocator> 4404basic_istream<_CharT, _Traits>& 4405getline(basic_istream<_CharT, _Traits>& __is, 4406 basic_string<_CharT, _Traits, _Allocator>& __str, _CharT __dlm); 4407 4408template<class _CharT, class _Traits, class _Allocator> 4409inline _LIBCPP_INLINE_VISIBILITY 4410basic_istream<_CharT, _Traits>& 4411getline(basic_istream<_CharT, _Traits>& __is, 4412 basic_string<_CharT, _Traits, _Allocator>& __str); 4413 4414template<class _CharT, class _Traits, class _Allocator> 4415inline _LIBCPP_INLINE_VISIBILITY 4416basic_istream<_CharT, _Traits>& 4417getline(basic_istream<_CharT, _Traits>&& __is, 4418 basic_string<_CharT, _Traits, _Allocator>& __str, _CharT __dlm); 4419 4420template<class _CharT, class _Traits, class _Allocator> 4421inline _LIBCPP_INLINE_VISIBILITY 4422basic_istream<_CharT, _Traits>& 4423getline(basic_istream<_CharT, _Traits>&& __is, 4424 basic_string<_CharT, _Traits, _Allocator>& __str); 4425 4426#if _LIBCPP_STD_VER > 17 4427template <class _CharT, class _Traits, class _Allocator, class _Up> 4428inline _LIBCPP_INLINE_VISIBILITY 4429 typename basic_string<_CharT, _Traits, _Allocator>::size_type 4430 erase(basic_string<_CharT, _Traits, _Allocator>& __str, const _Up& __v) { 4431 auto __old_size = __str.size(); 4432 __str.erase(_VSTD::remove(__str.begin(), __str.end(), __v), __str.end()); 4433 return __old_size - __str.size(); 4434} 4435 4436template <class _CharT, class _Traits, class _Allocator, class _Predicate> 4437inline _LIBCPP_INLINE_VISIBILITY 4438 typename basic_string<_CharT, _Traits, _Allocator>::size_type 4439 erase_if(basic_string<_CharT, _Traits, _Allocator>& __str, 4440 _Predicate __pred) { 4441 auto __old_size = __str.size(); 4442 __str.erase(_VSTD::remove_if(__str.begin(), __str.end(), __pred), 4443 __str.end()); 4444 return __old_size - __str.size(); 4445} 4446#endif 4447 4448#if _LIBCPP_DEBUG_LEVEL == 2 4449 4450template<class _CharT, class _Traits, class _Allocator> 4451bool 4452basic_string<_CharT, _Traits, _Allocator>::__dereferenceable(const const_iterator* __i) const 4453{ 4454 return data() <= _VSTD::__to_address(__i->base()) && 4455 _VSTD::__to_address(__i->base()) < data() + size(); 4456} 4457 4458template<class _CharT, class _Traits, class _Allocator> 4459bool 4460basic_string<_CharT, _Traits, _Allocator>::__decrementable(const const_iterator* __i) const 4461{ 4462 return data() < _VSTD::__to_address(__i->base()) && 4463 _VSTD::__to_address(__i->base()) <= data() + size(); 4464} 4465 4466template<class _CharT, class _Traits, class _Allocator> 4467bool 4468basic_string<_CharT, _Traits, _Allocator>::__addable(const const_iterator* __i, ptrdiff_t __n) const 4469{ 4470 const value_type* __p = _VSTD::__to_address(__i->base()) + __n; 4471 return data() <= __p && __p <= data() + size(); 4472} 4473 4474template<class _CharT, class _Traits, class _Allocator> 4475bool 4476basic_string<_CharT, _Traits, _Allocator>::__subscriptable(const const_iterator* __i, ptrdiff_t __n) const 4477{ 4478 const value_type* __p = _VSTD::__to_address(__i->base()) + __n; 4479 return data() <= __p && __p < data() + size(); 4480} 4481 4482#endif // _LIBCPP_DEBUG_LEVEL == 2 4483 4484#if _LIBCPP_STD_VER > 11 4485// Literal suffixes for basic_string [basic.string.literals] 4486inline namespace literals 4487{ 4488 inline namespace string_literals 4489 { 4490 inline _LIBCPP_INLINE_VISIBILITY 4491 basic_string<char> operator "" s( const char *__str, size_t __len ) 4492 { 4493 return basic_string<char> (__str, __len); 4494 } 4495 4496#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 4497 inline _LIBCPP_INLINE_VISIBILITY 4498 basic_string<wchar_t> operator "" s( const wchar_t *__str, size_t __len ) 4499 { 4500 return basic_string<wchar_t> (__str, __len); 4501 } 4502#endif 4503 4504#ifndef _LIBCPP_HAS_NO_CHAR8_T 4505 inline _LIBCPP_INLINE_VISIBILITY 4506 basic_string<char8_t> operator "" s(const char8_t *__str, size_t __len) _NOEXCEPT 4507 { 4508 return basic_string<char8_t> (__str, __len); 4509 } 4510#endif 4511 4512 inline _LIBCPP_INLINE_VISIBILITY 4513 basic_string<char16_t> operator "" s( const char16_t *__str, size_t __len ) 4514 { 4515 return basic_string<char16_t> (__str, __len); 4516 } 4517 4518 inline _LIBCPP_INLINE_VISIBILITY 4519 basic_string<char32_t> operator "" s( const char32_t *__str, size_t __len ) 4520 { 4521 return basic_string<char32_t> (__str, __len); 4522 } 4523 } // namespace string_literals 4524} // namespace literals 4525 4526#if _LIBCPP_STD_VER > 17 4527template <> 4528inline constexpr bool __format::__enable_insertable<std::basic_string<char>> = true; 4529#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 4530template <> 4531inline constexpr bool __format::__enable_insertable<std::basic_string<wchar_t>> = true; 4532#endif 4533#endif 4534 4535#endif 4536 4537_LIBCPP_END_NAMESPACE_STD 4538 4539_LIBCPP_POP_MACROS 4540 4541#endif // _LIBCPP_STRING 4542