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); // constexpr since C++20 99 explicit basic_string(const allocator_type& a); // constexpr since C++20 100 basic_string(const basic_string& str); // constexpr since C++20 101 basic_string(basic_string&& str) 102 noexcept(is_nothrow_move_constructible<allocator_type>::value); // constexpr since C++20 103 basic_string(const basic_string& str, size_type pos, 104 const allocator_type& a = allocator_type()); // constexpr since C++20 105 basic_string(const basic_string& str, size_type pos, size_type n, 106 const Allocator& a = Allocator()); // constexpr since C++20 107 template<class T> 108 basic_string(const T& t, size_type pos, size_type n, const Allocator& a = Allocator()); // C++17, constexpr since C++20 109 template <class T> 110 explicit basic_string(const T& t, const Allocator& a = Allocator()); // C++17, constexpr since C++20 111 basic_string(const value_type* s, const allocator_type& a = allocator_type()); // constexpr since C++20 112 basic_string(const value_type* s, size_type n, const allocator_type& a = allocator_type()); // constexpr since C++20 113 basic_string(nullptr_t) = delete; // C++2b 114 basic_string(size_type n, value_type c, const allocator_type& a = allocator_type()); // constexpr since C++20 115 template<class InputIterator> 116 basic_string(InputIterator begin, InputIterator end, 117 const allocator_type& a = allocator_type()); // constexpr since C++20 118 basic_string(initializer_list<value_type>, const Allocator& = Allocator()); // constexpr since C++20 119 basic_string(const basic_string&, const Allocator&); // constexpr since C++20 120 basic_string(basic_string&&, const Allocator&); // constexpr since C++20 121 122 ~basic_string(); // constexpr since C++20 123 124 operator basic_string_view<charT, traits>() const noexcept; // constexpr since C++20 125 126 basic_string& operator=(const basic_string& str); // constexpr since C++20 127 template <class T> 128 basic_string& operator=(const T& t); // C++17, constexpr since C++20 129 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, constexpr since C++20 133 basic_string& operator=(const value_type* s); // constexpr since C++20 134 basic_string& operator=(nullptr_t) = delete; // C++2b 135 basic_string& operator=(value_type c); // constexpr since C++20 136 basic_string& operator=(initializer_list<value_type>); // constexpr since C++20 137 138 iterator begin() noexcept; // constexpr since C++20 139 const_iterator begin() const noexcept; // constexpr since C++20 140 iterator end() noexcept; // constexpr since C++20 141 const_iterator end() const noexcept; // constexpr since C++20 142 143 reverse_iterator rbegin() noexcept; // constexpr since C++20 144 const_reverse_iterator rbegin() const noexcept; // constexpr since C++20 145 reverse_iterator rend() noexcept; // constexpr since C++20 146 const_reverse_iterator rend() const noexcept; // constexpr since C++20 147 148 const_iterator cbegin() const noexcept; // constexpr since C++20 149 const_iterator cend() const noexcept; // constexpr since C++20 150 const_reverse_iterator crbegin() const noexcept; // constexpr since C++20 151 const_reverse_iterator crend() const noexcept; // constexpr since C++20 152 153 size_type size() const noexcept; // constexpr since C++20 154 size_type length() const noexcept; // constexpr since C++20 155 size_type max_size() const noexcept; // constexpr since C++20 156 size_type capacity() const noexcept; // constexpr since C++20 157 158 void resize(size_type n, value_type c); // constexpr since C++20 159 void resize(size_type n); // constexpr since C++20 160 161 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); // constexpr since C++20 165 void reserve(); // deprecated in C++20 166 void shrink_to_fit(); // constexpr since C++20 167 void clear() noexcept; // constexpr since C++20 168 bool empty() const noexcept; // constexpr since C++20 169 170 const_reference operator[](size_type pos) const; // constexpr since C++20 171 reference operator[](size_type pos); // constexpr since C++20 172 173 const_reference at(size_type n) const; // constexpr since C++20 174 reference at(size_type n); // constexpr since C++20 175 176 basic_string& operator+=(const basic_string& str); // constexpr since C++20 177 template <class T> 178 basic_string& operator+=(const T& t); // C++17, constexpr since C++20 179 basic_string& operator+=(const value_type* s); // constexpr since C++20 180 basic_string& operator+=(value_type c); // constexpr since C++20 181 basic_string& operator+=(initializer_list<value_type>); // constexpr since C++20 182 183 basic_string& append(const basic_string& str); // constexpr since C++20 184 template <class T> 185 basic_string& append(const T& t); // C++17, constexpr since C++20 186 basic_string& append(const basic_string& str, size_type pos, size_type n=npos); // C++14, constexpr since C++20 187 template <class T> 188 basic_string& append(const T& t, size_type pos, size_type n=npos); // C++17, constexpr since C++20 189 basic_string& append(const value_type* s, size_type n); // constexpr since C++20 190 basic_string& append(const value_type* s); // constexpr since C++20 191 basic_string& append(size_type n, value_type c); // constexpr since C++20 192 template<class InputIterator> 193 basic_string& append(InputIterator first, InputIterator last); // constexpr since C++20 194 basic_string& append(initializer_list<value_type>); // constexpr since C++20 195 196 void push_back(value_type c); // constexpr since C++20 197 void pop_back(); // constexpr since C++20 198 reference front(); // constexpr since C++20 199 const_reference front() const; // constexpr since C++20 200 reference back(); // constexpr since C++20 201 const_reference back() const; // constexpr since C++20 202 203 basic_string& assign(const basic_string& str); // constexpr since C++20 204 template <class T> 205 basic_string& assign(const T& t); // C++17, constexpr since C++20 206 basic_string& assign(basic_string&& str); // constexpr since C++20 207 basic_string& assign(const basic_string& str, size_type pos, size_type n=npos); // C++14, constexpr since C++20 208 template <class T> 209 basic_string& assign(const T& t, size_type pos, size_type n=npos); // C++17, constexpr since C++20 210 basic_string& assign(const value_type* s, size_type n); // constexpr since C++20 211 basic_string& assign(const value_type* s); // constexpr since C++20 212 basic_string& assign(size_type n, value_type c); // constexpr since C++20 213 template<class InputIterator> 214 basic_string& assign(InputIterator first, InputIterator last); // constexpr since C++20 215 basic_string& assign(initializer_list<value_type>); // constexpr since C++20 216 217 basic_string& insert(size_type pos1, const basic_string& str); // constexpr since C++20 218 template <class T> 219 basic_string& insert(size_type pos1, const T& t); // constexpr since C++20 220 basic_string& insert(size_type pos1, const basic_string& str, 221 size_type pos2, size_type n); // constexpr since C++20 222 template <class T> 223 basic_string& insert(size_type pos1, const T& t, size_type pos2, size_type n); // C++17, constexpr since C++20 224 basic_string& insert(size_type pos, const value_type* s, size_type n=npos); // C++14, constexpr since C++20 225 basic_string& insert(size_type pos, const value_type* s); // constexpr since C++20 226 basic_string& insert(size_type pos, size_type n, value_type c); // constexpr since C++20 227 iterator insert(const_iterator p, value_type c); // constexpr since C++20 228 iterator insert(const_iterator p, size_type n, value_type c); // constexpr since C++20 229 template<class InputIterator> 230 iterator insert(const_iterator p, InputIterator first, InputIterator last); // constexpr since C++20 231 iterator insert(const_iterator p, initializer_list<value_type>); // constexpr since C++20 232 233 basic_string& erase(size_type pos = 0, size_type n = npos); // constexpr since C++20 234 iterator erase(const_iterator position); // constexpr since C++20 235 iterator erase(const_iterator first, const_iterator last); // constexpr since C++20 236 237 basic_string& replace(size_type pos1, size_type n1, const basic_string& str); // constexpr since C++20 238 template <class T> 239 basic_string& replace(size_type pos1, size_type n1, const T& t); // C++17, constexpr since C++20 240 basic_string& replace(size_type pos1, size_type n1, const basic_string& str, 241 size_type pos2, size_type n2=npos); // C++14, constexpr since C++20 242 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, constexpr since C++20 245 basic_string& replace(size_type pos, size_type n1, const value_type* s, size_type n2); // constexpr since C++20 246 basic_string& replace(size_type pos, size_type n1, const value_type* s); // constexpr since C++20 247 basic_string& replace(size_type pos, size_type n1, size_type n2, value_type c); // constexpr since C++20 248 basic_string& replace(const_iterator i1, const_iterator i2, const basic_string& str); // constexpr since C++20 249 template <class T> 250 basic_string& replace(const_iterator i1, const_iterator i2, const T& t); // C++17, constexpr since C++20 251 basic_string& replace(const_iterator i1, const_iterator i2, const value_type* s, size_type n); // constexpr since C++20 252 basic_string& replace(const_iterator i1, const_iterator i2, const value_type* s); // constexpr since C++20 253 basic_string& replace(const_iterator i1, const_iterator i2, size_type n, value_type c); // constexpr since C++20 254 template<class InputIterator> 255 basic_string& replace(const_iterator i1, const_iterator i2, InputIterator j1, InputIterator j2); // constexpr since C++20 256 basic_string& replace(const_iterator i1, const_iterator i2, initializer_list<value_type>); // constexpr since C++20 257 258 size_type copy(value_type* s, size_type n, size_type pos = 0) const; // constexpr since C++20 259 basic_string substr(size_type pos = 0, size_type n = npos) const; // constexpr since C++20 260 261 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, constexpr since C++20 264 265 const value_type* c_str() const noexcept; // constexpr since C++20 266 const value_type* data() const noexcept; // constexpr since C++20 267 value_type* data() noexcept; // C++17, constexpr since C++20 268 269 allocator_type get_allocator() const noexcept; // constexpr since C++20 270 271 size_type find(const basic_string& str, size_type pos = 0) const noexcept; // constexpr since C++20 272 template <class T> 273 size_type find(const T& t, size_type pos = 0) const noexcept; // C++17, noexcept as an extension, constexpr since C++20 274 size_type find(const value_type* s, size_type pos, size_type n) const noexcept; // constexpr since C++20 275 size_type find(const value_type* s, size_type pos = 0) const noexcept; // constexpr since C++20 276 size_type find(value_type c, size_type pos = 0) const noexcept; // constexpr since C++20 277 278 size_type rfind(const basic_string& str, size_type pos = npos) const noexcept; // constexpr since C++20 279 template <class T> 280 size_type rfind(const T& t, size_type pos = npos) const noexcept; // C++17, noexcept as an extension, constexpr since C++20 281 size_type rfind(const value_type* s, size_type pos, size_type n) const noexcept; // constexpr since C++20 282 size_type rfind(const value_type* s, size_type pos = npos) const noexcept; // constexpr since C++20 283 size_type rfind(value_type c, size_type pos = npos) const noexcept; // constexpr since C++20 284 285 size_type find_first_of(const basic_string& str, size_type pos = 0) const noexcept; // constexpr since C++20 286 template <class T> 287 size_type find_first_of(const T& t, size_type pos = 0) const noexcept; // C++17, noexcept as an extension, constexpr since C++20 288 size_type find_first_of(const value_type* s, size_type pos, size_type n) const noexcept; // constexpr since C++20 289 size_type find_first_of(const value_type* s, size_type pos = 0) const noexcept; // constexpr since C++20 290 size_type find_first_of(value_type c, size_type pos = 0) const noexcept; // constexpr since C++20 291 292 size_type find_last_of(const basic_string& str, size_type pos = npos) const noexcept; // constexpr since C++20 293 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, constexpr since C++20 295 size_type find_last_of(const value_type* s, size_type pos, size_type n) const noexcept; // constexpr since C++20 296 size_type find_last_of(const value_type* s, size_type pos = npos) const noexcept; // constexpr since C++20 297 size_type find_last_of(value_type c, size_type pos = npos) const noexcept; // constexpr since C++20 298 299 size_type find_first_not_of(const basic_string& str, size_type pos = 0) const noexcept; // constexpr since C++20 300 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, constexpr since C++20 302 size_type find_first_not_of(const value_type* s, size_type pos, size_type n) const noexcept; // constexpr since C++20 303 size_type find_first_not_of(const value_type* s, size_type pos = 0) const noexcept; // constexpr since C++20 304 size_type find_first_not_of(value_type c, size_type pos = 0) const noexcept; // constexpr since C++20 305 306 size_type find_last_not_of(const basic_string& str, size_type pos = npos) const noexcept; // constexpr since C++20 307 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, constexpr since C++20 309 size_type find_last_not_of(const value_type* s, size_type pos, size_type n) const noexcept; // constexpr since C++20 310 size_type find_last_not_of(const value_type* s, size_type pos = npos) const noexcept; // constexpr since C++20 311 size_type find_last_not_of(value_type c, size_type pos = npos) const noexcept; // constexpr since C++20 312 313 int compare(const basic_string& str) const noexcept; // constexpr since C++20 314 template <class T> 315 int compare(const T& t) const noexcept; // C++17, noexcept as an extension, constexpr since C++20 316 int compare(size_type pos1, size_type n1, const basic_string& str) const; // constexpr since C++20 317 template <class T> 318 int compare(size_type pos1, size_type n1, const T& t) const; // C++17, constexpr since C++20 319 int compare(size_type pos1, size_type n1, const basic_string& str, 320 size_type pos2, size_type n2=npos) const; // C++14, constexpr since C++20 321 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, constexpr since C++20 324 int compare(const value_type* s) const noexcept; // constexpr since C++20 325 int compare(size_type pos1, size_type n1, const value_type* s) const; // constexpr since C++20 326 int compare(size_type pos1, size_type n1, const value_type* s, size_type n2) const; // constexpr since C++20 327 328 constexpr bool starts_with(basic_string_view<charT, traits> sv) const noexcept; // C++20 329 constexpr bool starts_with(charT c) const noexcept; // C++20 330 constexpr bool starts_with(const charT* s) const; // C++20 331 constexpr bool ends_with(basic_string_view<charT, traits> sv) const noexcept; // C++20 332 constexpr bool ends_with(charT c) const noexcept; // C++20 333 constexpr 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 340template<class InputIterator, 341 class Allocator = allocator<typename iterator_traits<InputIterator>::value_type>> 342basic_string(InputIterator, InputIterator, Allocator = Allocator()) 343 -> basic_string<typename iterator_traits<InputIterator>::value_type, 344 char_traits<typename iterator_traits<InputIterator>::value_type>, 345 Allocator>; // C++17 346 347template<class charT, class traits, class Allocator> 348basic_string<charT, traits, Allocator> 349operator+(const basic_string<charT, traits, Allocator>& lhs, 350 const basic_string<charT, traits, Allocator>& rhs); // constexpr since C++20 351 352template<class charT, class traits, class Allocator> 353basic_string<charT, traits, Allocator> 354operator+(const charT* lhs , const basic_string<charT,traits,Allocator>&rhs); // constexpr since C++20 355 356template<class charT, class traits, class Allocator> 357basic_string<charT, traits, Allocator> 358operator+(charT lhs, const basic_string<charT,traits,Allocator>& rhs); // constexpr since C++20 359 360template<class charT, class traits, class Allocator> 361basic_string<charT, traits, Allocator> 362operator+(const basic_string<charT, traits, Allocator>& lhs, const charT* rhs); // constexpr since C++20 363 364template<class charT, class traits, class Allocator> 365basic_string<charT, traits, Allocator> 366operator+(const basic_string<charT, traits, Allocator>& lhs, charT rhs); // constexpr since C++20 367 368template<class charT, class traits, class Allocator> 369bool operator==(const basic_string<charT, traits, Allocator>& lhs, 370 const basic_string<charT, traits, Allocator>& rhs) noexcept; // constexpr since C++20 371 372template<class charT, class traits, class Allocator> 373bool operator==(const charT* lhs, const basic_string<charT, traits, Allocator>& rhs) noexcept; // constexpr since C++20 374 375template<class charT, class traits, class Allocator> 376bool operator==(const basic_string<charT,traits,Allocator>& lhs, const charT* rhs) noexcept; // constexpr since C++20 377 378template<class charT, class traits, class Allocator> 379bool operator!=(const basic_string<charT,traits,Allocator>& lhs, 380 const basic_string<charT, traits, Allocator>& rhs) noexcept; // constexpr since C++20 381 382template<class charT, class traits, class Allocator> 383bool operator!=(const charT* lhs, const basic_string<charT, traits, Allocator>& rhs) noexcept; // constexpr since C++20 384 385template<class charT, class traits, class Allocator> 386bool operator!=(const basic_string<charT, traits, Allocator>& lhs, const charT* rhs) noexcept; // constexpr since C++20 387 388template<class charT, class traits, class Allocator> 389bool operator< (const basic_string<charT, traits, Allocator>& lhs, 390 const basic_string<charT, traits, Allocator>& rhs) noexcept; // constexpr since C++20 391 392template<class charT, class traits, class Allocator> 393bool operator< (const basic_string<charT, traits, Allocator>& lhs, const charT* rhs) noexcept; // constexpr since C++20 394 395template<class charT, class traits, class Allocator> 396bool operator< (const charT* lhs, const basic_string<charT, traits, Allocator>& rhs) noexcept; // constexpr since C++20 397 398template<class charT, class traits, class Allocator> 399bool operator> (const basic_string<charT, traits, Allocator>& lhs, 400 const basic_string<charT, traits, Allocator>& rhs) noexcept; // constexpr since C++20 401 402template<class charT, class traits, class Allocator> 403bool operator> (const basic_string<charT, traits, Allocator>& lhs, const charT* rhs) noexcept; // constexpr since C++20 404 405template<class charT, class traits, class Allocator> 406bool operator> (const charT* lhs, const basic_string<charT, traits, Allocator>& rhs) noexcept; // constexpr since C++20 407 408template<class charT, class traits, class Allocator> 409bool operator<=(const basic_string<charT, traits, Allocator>& lhs, 410 const basic_string<charT, traits, Allocator>& rhs) noexcept; // constexpr since C++20 411 412template<class charT, class traits, class Allocator> 413bool operator<=(const basic_string<charT, traits, Allocator>& lhs, const charT* rhs) noexcept; // constexpr since C++20 414 415template<class charT, class traits, class Allocator> 416bool operator<=(const charT* lhs, const basic_string<charT, traits, Allocator>& rhs) noexcept; // constexpr since C++20 417 418template<class charT, class traits, class Allocator> 419bool operator>=(const basic_string<charT, traits, Allocator>& lhs, 420 const basic_string<charT, traits, Allocator>& rhs) noexcept; // constexpr since C++20 421 422template<class charT, class traits, class Allocator> 423bool operator>=(const basic_string<charT, traits, Allocator>& lhs, const charT* rhs) noexcept; // constexpr since C++20 424 425template<class charT, class traits, class Allocator> 426bool operator>=(const charT* lhs, const basic_string<charT, traits, Allocator>& rhs) noexcept; // constexpr since C++20 427 428template<class charT, class traits, class Allocator> 429void swap(basic_string<charT, traits, Allocator>& lhs, 430 basic_string<charT, traits, Allocator>& rhs) 431 noexcept(noexcept(lhs.swap(rhs))); // constexpr since C++20 432 433template<class charT, class traits, class Allocator> 434basic_istream<charT, traits>& 435operator>>(basic_istream<charT, traits>& is, basic_string<charT, traits, Allocator>& str); 436 437template<class charT, class traits, class Allocator> 438basic_ostream<charT, traits>& 439operator<<(basic_ostream<charT, traits>& os, const basic_string<charT, traits, Allocator>& str); 440 441template<class charT, class traits, class Allocator> 442basic_istream<charT, traits>& 443getline(basic_istream<charT, traits>& is, basic_string<charT, traits, Allocator>& str, 444 charT delim); 445 446template<class charT, class traits, class Allocator> 447basic_istream<charT, traits>& 448getline(basic_istream<charT, traits>& is, basic_string<charT, traits, Allocator>& str); 449 450template<class charT, class traits, class Allocator, class U> 451typename basic_string<charT, traits, Allocator>::size_type 452erase(basic_string<charT, traits, Allocator>& c, const U& value); // C++20 453template<class charT, class traits, class Allocator, class Predicate> 454typename basic_string<charT, traits, Allocator>::size_type 455erase_if(basic_string<charT, traits, Allocator>& c, Predicate pred); // C++20 456 457typedef basic_string<char> string; 458typedef basic_string<wchar_t> wstring; 459typedef basic_string<char8_t> u8string; // C++20 460typedef basic_string<char16_t> u16string; 461typedef basic_string<char32_t> u32string; 462 463int stoi (const string& str, size_t* idx = nullptr, int base = 10); 464long stol (const string& str, size_t* idx = nullptr, int base = 10); 465unsigned long stoul (const string& str, size_t* idx = nullptr, int base = 10); 466long long stoll (const string& str, size_t* idx = nullptr, int base = 10); 467unsigned long long stoull(const string& str, size_t* idx = nullptr, int base = 10); 468 469float stof (const string& str, size_t* idx = nullptr); 470double stod (const string& str, size_t* idx = nullptr); 471long double stold(const string& str, size_t* idx = nullptr); 472 473string to_string(int val); 474string to_string(unsigned val); 475string to_string(long val); 476string to_string(unsigned long val); 477string to_string(long long val); 478string to_string(unsigned long long val); 479string to_string(float val); 480string to_string(double val); 481string to_string(long double val); 482 483int stoi (const wstring& str, size_t* idx = nullptr, int base = 10); 484long stol (const wstring& str, size_t* idx = nullptr, int base = 10); 485unsigned long stoul (const wstring& str, size_t* idx = nullptr, int base = 10); 486long long stoll (const wstring& str, size_t* idx = nullptr, int base = 10); 487unsigned long long stoull(const wstring& str, size_t* idx = nullptr, int base = 10); 488 489float stof (const wstring& str, size_t* idx = nullptr); 490double stod (const wstring& str, size_t* idx = nullptr); 491long double stold(const wstring& str, size_t* idx = nullptr); 492 493wstring to_wstring(int val); 494wstring to_wstring(unsigned val); 495wstring to_wstring(long val); 496wstring to_wstring(unsigned long val); 497wstring to_wstring(long long val); 498wstring to_wstring(unsigned long long val); 499wstring to_wstring(float val); 500wstring to_wstring(double val); 501wstring to_wstring(long double val); 502 503template <> struct hash<string>; 504template <> struct hash<u8string>; // C++20 505template <> struct hash<u16string>; 506template <> struct hash<u32string>; 507template <> struct hash<wstring>; 508 509basic_string<char> operator "" s( const char *str, size_t len ); // C++14, constexpr since C++20 510basic_string<wchar_t> operator "" s( const wchar_t *str, size_t len ); // C++14, constexpr since C++20 511constexpr basic_string<char8_t> operator "" s( const char8_t *str, size_t len ); // C++20 512basic_string<char16_t> operator "" s( const char16_t *str, size_t len ); // C++14, constexpr since C++20 513basic_string<char32_t> operator "" s( const char32_t *str, size_t len ); // C++14, constexpr since C++20 514 515} // std 516 517*/ 518 519#include <__algorithm/max.h> 520#include <__algorithm/min.h> 521#include <__algorithm/remove.h> 522#include <__algorithm/remove_if.h> 523#include <__assert> // all public C++ headers provide the assertion handler 524#include <__config> 525#include <__debug> 526#include <__format/enable_insertable.h> 527#include <__ios/fpos.h> 528#include <__iterator/wrap_iter.h> 529#include <__memory/allocate_at_least.h> 530#include <__utility/auto_cast.h> 531#include <__utility/move.h> 532#include <__utility/swap.h> 533#include <__utility/unreachable.h> 534#include <climits> 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 <limits> 543#include <memory> 544#include <stdexcept> 545#include <string_view> 546#include <type_traits> 547#include <version> 548 549// TODO: remove these headers 550#include <__functional/binary_function.h> 551#include <__functional/invoke.h> 552#include <__functional/operations.h> 553#include <__functional/reference_wrapper.h> 554#include <__functional/unary_function.h> 555#include <__functional/weak_result_type.h> 556#include <new> 557#include <typeinfo> 558 559#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 560# include <cwchar> 561#endif 562 563#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS 564# include <cstdint> 565#endif 566 567#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 568# pragma GCC system_header 569#endif 570 571_LIBCPP_PUSH_MACROS 572#include <__undef_macros> 573 574 575_LIBCPP_BEGIN_NAMESPACE_STD 576 577// basic_string 578 579template<class _CharT, class _Traits, class _Allocator> 580basic_string<_CharT, _Traits, _Allocator> 581_LIBCPP_CONSTEXPR_AFTER_CXX17 582operator+(const basic_string<_CharT, _Traits, _Allocator>& __x, 583 const basic_string<_CharT, _Traits, _Allocator>& __y); 584 585template<class _CharT, class _Traits, class _Allocator> 586_LIBCPP_CONSTEXPR_AFTER_CXX17 587basic_string<_CharT, _Traits, _Allocator> 588operator+(const _CharT* __x, const basic_string<_CharT,_Traits,_Allocator>& __y); 589 590template<class _CharT, class _Traits, class _Allocator> 591_LIBCPP_CONSTEXPR_AFTER_CXX17 592basic_string<_CharT, _Traits, _Allocator> 593operator+(_CharT __x, const basic_string<_CharT,_Traits,_Allocator>& __y); 594 595template<class _CharT, class _Traits, class _Allocator> 596inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 597basic_string<_CharT, _Traits, _Allocator> 598operator+(const basic_string<_CharT, _Traits, _Allocator>& __x, const _CharT* __y); 599 600template<class _CharT, class _Traits, class _Allocator> 601_LIBCPP_CONSTEXPR_AFTER_CXX17 602basic_string<_CharT, _Traits, _Allocator> 603operator+(const basic_string<_CharT, _Traits, _Allocator>& __x, _CharT __y); 604 605_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS string operator+<char, char_traits<char>, allocator<char> >(char const*, string const&)) 606 607template <class _Iter> 608struct __string_is_trivial_iterator : public false_type {}; 609 610template <class _Tp> 611struct __string_is_trivial_iterator<_Tp*> 612 : public is_arithmetic<_Tp> {}; 613 614template <class _Iter> 615struct __string_is_trivial_iterator<__wrap_iter<_Iter> > 616 : public __string_is_trivial_iterator<_Iter> {}; 617 618template <class _CharT, class _Traits, class _Tp> 619struct __can_be_converted_to_string_view : public _BoolConstant< 620 is_convertible<const _Tp&, basic_string_view<_CharT, _Traits> >::value && 621 !is_convertible<const _Tp&, const _CharT*>::value 622 > {}; 623 624#ifndef _LIBCPP_HAS_NO_CHAR8_T 625typedef basic_string<char8_t> u8string; 626#endif 627 628#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS 629typedef basic_string<char16_t> u16string; 630typedef basic_string<char32_t> u32string; 631#endif 632 633struct __uninitialized_size_tag {}; 634 635template<class _CharT, class _Traits, class _Allocator> 636class 637 _LIBCPP_TEMPLATE_VIS 638#ifndef _LIBCPP_HAS_NO_CHAR8_T 639 _LIBCPP_PREFERRED_NAME(u8string) 640#endif 641#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS 642 _LIBCPP_PREFERRED_NAME(u16string) 643 _LIBCPP_PREFERRED_NAME(u32string) 644#endif 645 basic_string 646{ 647public: 648 typedef basic_string __self; 649 typedef basic_string_view<_CharT, _Traits> __self_view; 650 typedef _Traits traits_type; 651 typedef _CharT value_type; 652 typedef _Allocator allocator_type; 653 typedef allocator_traits<allocator_type> __alloc_traits; 654 typedef typename __alloc_traits::size_type size_type; 655 typedef typename __alloc_traits::difference_type difference_type; 656 typedef value_type& reference; 657 typedef const value_type& const_reference; 658 typedef typename __alloc_traits::pointer pointer; 659 typedef typename __alloc_traits::const_pointer const_pointer; 660 661 static_assert((!is_array<value_type>::value), "Character type of basic_string must not be an array"); 662 static_assert(( is_standard_layout<value_type>::value), "Character type of basic_string must be standard-layout"); 663 static_assert(( is_trivial<value_type>::value), "Character type of basic_string must be trivial"); 664 static_assert(( is_same<_CharT, typename traits_type::char_type>::value), 665 "traits_type::char_type must be the same type as CharT"); 666 static_assert(( is_same<typename allocator_type::value_type, value_type>::value), 667 "Allocator::value_type must be same type as value_type"); 668 669 typedef __wrap_iter<pointer> iterator; 670 typedef __wrap_iter<const_pointer> const_iterator; 671 typedef std::reverse_iterator<iterator> reverse_iterator; 672 typedef std::reverse_iterator<const_iterator> const_reverse_iterator; 673 674private: 675 676#ifdef _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT 677 678 struct __long 679 { 680 pointer __data_; 681 size_type __size_; 682 size_type __cap_ : sizeof(size_type) * CHAR_BIT - 1; 683 size_type __is_long_ : 1; 684 }; 685 686 enum {__min_cap = (sizeof(__long) - 1)/sizeof(value_type) > 2 ? 687 (sizeof(__long) - 1)/sizeof(value_type) : 2}; 688 689 struct __short 690 { 691 value_type __data_[__min_cap]; 692 unsigned char __padding[sizeof(value_type) - 1]; 693 unsigned char __size_ : 7; 694 unsigned char __is_long_ : 1; 695 }; 696 697// The __endian_factor is required because the field we use to store the size 698// (either size_type or unsigned char depending on long/short) has one fewer 699// bit than it would if it were not a bitfield. 700// 701// If the LSB is used to store the short-flag in the short string representation, 702// we have to multiply the size by two when it is stored and divide it by two when 703// it is loaded to make sure that we always store an even number. In the long string 704// representation, we can ignore this because we can assume that we always allocate 705// an even amount of value_types. 706// 707// If the MSB is used for the short-flag, the max_size() is numeric_limits<size_type>::max() / 2. 708// This does not impact the short string representation, since we never need the MSB 709// for representing the size of a short string anyway. 710 711#ifdef _LIBCPP_BIG_ENDIAN 712 static const size_type __endian_factor = 2; 713#else 714 static const size_type __endian_factor = 1; 715#endif 716 717#else // _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT 718 719#ifdef _LIBCPP_BIG_ENDIAN 720 static const size_type __endian_factor = 1; 721#else 722 static const size_type __endian_factor = 2; 723#endif 724 725 struct __long 726 { 727 size_type __is_long_ : 1; 728 size_type __cap_ : sizeof(size_type) * CHAR_BIT - 1; 729 size_type __size_; 730 pointer __data_; 731 }; 732 733 enum {__min_cap = (sizeof(__long) - 1)/sizeof(value_type) > 2 ? 734 (sizeof(__long) - 1)/sizeof(value_type) : 2}; 735 736 struct __short 737 { 738 union 739 { 740 struct { 741 unsigned char __is_long_ : 1; 742 unsigned char __size_ : 7; 743 }; 744 value_type __lx; 745 }; 746 value_type __data_[__min_cap]; 747 }; 748 749#endif // _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT 750 751 union __ulx{__long __lx; __short __lxx;}; 752 753 enum {__n_words = sizeof(__ulx) / sizeof(size_type)}; 754 755 struct __raw 756 { 757 size_type __words[__n_words]; 758 }; 759 760 struct __rep 761 { 762 union 763 { 764 __long __l; 765 __short __s; 766 __raw __r; 767 }; 768 }; 769 770 __compressed_pair<__rep, allocator_type> __r_; 771 772 // Construct a string with the given allocator and enough storage to hold `__size` characters, but 773 // don't initialize the characters. The contents of the string, including the null terminator, must be 774 // initialized separately. 775 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 776 explicit basic_string(__uninitialized_size_tag, size_type __size, const allocator_type& __a) 777 : __r_(__default_init_tag(), __a) { 778 if (__size > max_size()) 779 __throw_length_error(); 780 if (__fits_in_sso(__size)) { 781 __zero(); 782 __set_short_size(__size); 783 } else { 784 auto __capacity = __recommend(__size) + 1; 785 auto __allocation = __alloc_traits::allocate(__alloc(), __capacity); 786 __begin_lifetime(__allocation, __capacity); 787 __set_long_cap(__capacity); 788 __set_long_pointer(__allocation); 789 __set_long_size(__size); 790 } 791 std::__debug_db_insert_c(this); 792 } 793 794public: 795 _LIBCPP_TEMPLATE_DATA_VIS 796 static const size_type npos = -1; 797 798 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string() 799 _NOEXCEPT_(is_nothrow_default_constructible<allocator_type>::value); 800 801 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 explicit basic_string(const allocator_type& __a) 802#if _LIBCPP_STD_VER <= 14 803 _NOEXCEPT_(is_nothrow_copy_constructible<allocator_type>::value); 804#else 805 _NOEXCEPT; 806#endif 807 808 _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string(const basic_string& __str); 809 _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string(const basic_string& __str, const allocator_type& __a); 810 811#ifndef _LIBCPP_CXX03_LANG 812 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 813 basic_string(basic_string&& __str) 814#if _LIBCPP_STD_VER <= 14 815 _NOEXCEPT_(is_nothrow_move_constructible<allocator_type>::value); 816#else 817 _NOEXCEPT; 818#endif 819 820 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 821 basic_string(basic_string&& __str, const allocator_type& __a); 822#endif // _LIBCPP_CXX03_LANG 823 824 template <class = __enable_if_t<__is_allocator<_Allocator>::value, nullptr_t> > 825 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 826 basic_string(const _CharT* __s) : __r_(__default_init_tag(), __default_init_tag()) { 827 _LIBCPP_ASSERT(__s != nullptr, "basic_string(const char*) detected nullptr"); 828 __init(__s, traits_type::length(__s)); 829 std::__debug_db_insert_c(this); 830 } 831 832 template <class = __enable_if_t<__is_allocator<_Allocator>::value, nullptr_t> > 833 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 834 basic_string(const _CharT* __s, const _Allocator& __a); 835 836#if _LIBCPP_STD_VER > 20 837 basic_string(nullptr_t) = delete; 838#endif 839 840 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 841 basic_string(const _CharT* __s, size_type __n); 842 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 843 basic_string(const _CharT* __s, size_type __n, const _Allocator& __a); 844 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 845 basic_string(size_type __n, _CharT __c); 846 847 template <class = __enable_if_t<__is_allocator<_Allocator>::value, nullptr_t> > 848 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 849 basic_string(size_type __n, _CharT __c, const _Allocator& __a); 850 851 _LIBCPP_CONSTEXPR_AFTER_CXX17 852 basic_string(const basic_string& __str, size_type __pos, size_type __n, 853 const _Allocator& __a = _Allocator()); 854 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 855 basic_string(const basic_string& __str, size_type __pos, 856 const _Allocator& __a = _Allocator()); 857 858 template<class _Tp, class = __enable_if_t<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value && !__is_same_uncvref<_Tp, basic_string>::value> > 859 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_AFTER_CXX17 860 basic_string(const _Tp& __t, size_type __pos, size_type __n, 861 const allocator_type& __a = allocator_type()); 862 863 template<class _Tp, class = __enable_if_t<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value && 864 !__is_same_uncvref<_Tp, basic_string>::value> > 865 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_AFTER_CXX17 866 explicit basic_string(const _Tp& __t); 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 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_AFTER_CXX17 870 explicit basic_string(const _Tp& __t, const allocator_type& __a); 871 872 template<class _InputIterator, class = __enable_if_t<__is_cpp17_input_iterator<_InputIterator>::value> > 873 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 874 basic_string(_InputIterator __first, _InputIterator __last); 875 template<class _InputIterator, class = __enable_if_t<__is_cpp17_input_iterator<_InputIterator>::value> > 876 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 877 basic_string(_InputIterator __first, _InputIterator __last, const allocator_type& __a); 878#ifndef _LIBCPP_CXX03_LANG 879 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 880 basic_string(initializer_list<_CharT> __il); 881 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 882 basic_string(initializer_list<_CharT> __il, const _Allocator& __a); 883#endif // _LIBCPP_CXX03_LANG 884 885 inline _LIBCPP_CONSTEXPR_AFTER_CXX17 ~basic_string(); 886 887 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 888 operator __self_view() const _NOEXCEPT { return __self_view(data(), size()); } 889 890 _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string& operator=(const basic_string& __str); 891 892 template <class _Tp, class = __enable_if_t<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value && 893 !__is_same_uncvref<_Tp, basic_string>::value> > 894 _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string& operator=(const _Tp& __t) { 895 __self_view __sv = __t; 896 return assign(__sv); 897 } 898 899#ifndef _LIBCPP_CXX03_LANG 900 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 901 basic_string& operator=(basic_string&& __str) 902 _NOEXCEPT_((__noexcept_move_assign_container<_Allocator, __alloc_traits>::value)); 903 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 904 basic_string& operator=(initializer_list<value_type> __il) {return assign(__il.begin(), __il.size());} 905#endif 906 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 907 basic_string& operator=(const value_type* __s) {return assign(__s);} 908#if _LIBCPP_STD_VER > 20 909 basic_string& operator=(nullptr_t) = delete; 910#endif 911 _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string& operator=(value_type __c); 912 913#if _LIBCPP_DEBUG_LEVEL == 2 914 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 915 iterator begin() _NOEXCEPT 916 {return iterator(this, __get_pointer());} 917 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 918 const_iterator begin() const _NOEXCEPT 919 {return const_iterator(this, __get_pointer());} 920 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 921 iterator end() _NOEXCEPT 922 {return iterator(this, __get_pointer() + size());} 923 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 924 const_iterator end() const _NOEXCEPT 925 {return const_iterator(this, __get_pointer() + size());} 926#else 927 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 928 iterator begin() _NOEXCEPT 929 {return iterator(__get_pointer());} 930 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 931 const_iterator begin() const _NOEXCEPT 932 {return const_iterator(__get_pointer());} 933 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 934 iterator end() _NOEXCEPT 935 {return iterator(__get_pointer() + size());} 936 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 937 const_iterator end() const _NOEXCEPT 938 {return const_iterator(__get_pointer() + size());} 939#endif // _LIBCPP_DEBUG_LEVEL == 2 940 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 941 reverse_iterator rbegin() _NOEXCEPT 942 {return reverse_iterator(end());} 943 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 944 const_reverse_iterator rbegin() const _NOEXCEPT 945 {return const_reverse_iterator(end());} 946 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 947 reverse_iterator rend() _NOEXCEPT 948 {return reverse_iterator(begin());} 949 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 950 const_reverse_iterator rend() const _NOEXCEPT 951 {return const_reverse_iterator(begin());} 952 953 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 954 const_iterator cbegin() const _NOEXCEPT 955 {return begin();} 956 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 957 const_iterator cend() const _NOEXCEPT 958 {return end();} 959 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 960 const_reverse_iterator crbegin() const _NOEXCEPT 961 {return rbegin();} 962 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 963 const_reverse_iterator crend() const _NOEXCEPT 964 {return rend();} 965 966 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 size_type size() const _NOEXCEPT 967 {return __is_long() ? __get_long_size() : __get_short_size();} 968 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 size_type length() const _NOEXCEPT {return size();} 969 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 size_type max_size() const _NOEXCEPT; 970 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 size_type capacity() const _NOEXCEPT { 971 return (__is_long() ? __get_long_cap() : static_cast<size_type>(__min_cap)) - 1; 972 } 973 974 _LIBCPP_CONSTEXPR_AFTER_CXX17 void resize(size_type __n, value_type __c); 975 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 void resize(size_type __n) { resize(__n, value_type()); } 976 977 _LIBCPP_CONSTEXPR_AFTER_CXX17 void reserve(size_type __requested_capacity); 978 979#if _LIBCPP_STD_VER > 20 980 template <class _Op> 981 _LIBCPP_HIDE_FROM_ABI constexpr 982 void resize_and_overwrite(size_type __n, _Op __op) { 983 __resize_default_init(__n); 984 __erase_to_end(std::move(__op)(data(), _LIBCPP_AUTO_CAST(__n))); 985 } 986#endif 987 988 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 void __resize_default_init(size_type __n); 989 990 _LIBCPP_DEPRECATED_IN_CXX20 _LIBCPP_HIDE_FROM_ABI void reserve() _NOEXCEPT { shrink_to_fit(); } 991 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 void shrink_to_fit() _NOEXCEPT; 992 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 void clear() _NOEXCEPT; 993 994 _LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 995 bool empty() const _NOEXCEPT {return size() == 0;} 996 997 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 998 const_reference operator[](size_type __pos) const _NOEXCEPT; 999 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 reference operator[](size_type __pos) _NOEXCEPT; 1000 1001 _LIBCPP_CONSTEXPR_AFTER_CXX17 const_reference at(size_type __n) const; 1002 _LIBCPP_CONSTEXPR_AFTER_CXX17 reference at(size_type __n); 1003 1004 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string& operator+=(const basic_string& __str) { 1005 return append(__str); 1006 } 1007 1008 template <class _Tp> 1009 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_AFTER_CXX17 1010 __enable_if_t 1011 < 1012 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value 1013 && !__is_same_uncvref<_Tp, basic_string >::value, 1014 basic_string& 1015 > 1016 operator+=(const _Tp& __t) { 1017 __self_view __sv = __t; return append(__sv); 1018 } 1019 1020 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string& operator+=(const value_type* __s) { 1021 return append(__s); 1022 } 1023 1024 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string& operator+=(value_type __c) { 1025 push_back(__c); 1026 return *this; 1027 } 1028 1029#ifndef _LIBCPP_CXX03_LANG 1030 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1031 basic_string& operator+=(initializer_list<value_type> __il) { return append(__il); } 1032#endif // _LIBCPP_CXX03_LANG 1033 1034 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1035 basic_string& append(const basic_string& __str); 1036 1037 template <class _Tp> 1038 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_AFTER_CXX17 1039 __enable_if_t< 1040 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value 1041 && !__is_same_uncvref<_Tp, basic_string>::value, 1042 basic_string& 1043 > 1044 append(const _Tp& __t) { __self_view __sv = __t; return append(__sv.data(), __sv.size()); } 1045 _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string& append(const basic_string& __str, size_type __pos, size_type __n=npos); 1046 1047 template <class _Tp> 1048 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_AFTER_CXX17 1049 __enable_if_t 1050 < 1051 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value 1052 && !__is_same_uncvref<_Tp, basic_string>::value, 1053 basic_string& 1054 > 1055 append(const _Tp& __t, size_type __pos, size_type __n=npos); 1056 _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string& append(const value_type* __s, size_type __n); 1057 _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string& append(const value_type* __s); 1058 _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string& append(size_type __n, value_type __c); 1059 1060 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1061 void __append_default_init(size_type __n); 1062 1063 template<class _InputIterator> 1064 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1065 __enable_if_t 1066 < 1067 __is_exactly_cpp17_input_iterator<_InputIterator>::value, 1068 basic_string& 1069 > 1070 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1071 append(_InputIterator __first, _InputIterator __last) { 1072 const basic_string __temp(__first, __last, __alloc()); 1073 append(__temp.data(), __temp.size()); 1074 return *this; 1075 } 1076 template<class _ForwardIterator> 1077 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 1078 __enable_if_t 1079 < 1080 __is_cpp17_forward_iterator<_ForwardIterator>::value, 1081 basic_string& 1082 > 1083 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1084 append(_ForwardIterator __first, _ForwardIterator __last); 1085 1086#ifndef _LIBCPP_CXX03_LANG 1087 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1088 basic_string& append(initializer_list<value_type> __il) {return append(__il.begin(), __il.size());} 1089#endif // _LIBCPP_CXX03_LANG 1090 1091 _LIBCPP_CONSTEXPR_AFTER_CXX17 void push_back(value_type __c); 1092 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 void pop_back(); 1093 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 reference front() _NOEXCEPT; 1094 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 const_reference front() const _NOEXCEPT; 1095 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 reference back() _NOEXCEPT; 1096 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 const_reference back() const _NOEXCEPT; 1097 1098 template <class _Tp> 1099 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_AFTER_CXX17 1100 __enable_if_t 1101 < 1102 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1103 basic_string& 1104 > 1105 assign(const _Tp & __t) { __self_view __sv = __t; return assign(__sv.data(), __sv.size()); } 1106 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1107 basic_string& assign(const basic_string& __str) { return *this = __str; } 1108#ifndef _LIBCPP_CXX03_LANG 1109 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1110 basic_string& assign(basic_string&& __str) 1111 _NOEXCEPT_((__noexcept_move_assign_container<_Allocator, __alloc_traits>::value)) 1112 {*this = std::move(__str); return *this;} 1113#endif 1114 _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string& assign(const basic_string& __str, size_type __pos, size_type __n=npos); 1115 template <class _Tp> 1116 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_AFTER_CXX17 1117 __enable_if_t 1118 < 1119 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value 1120 && !__is_same_uncvref<_Tp, basic_string>::value, 1121 basic_string& 1122 > 1123 assign(const _Tp & __t, size_type __pos, size_type __n=npos); 1124 _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string& assign(const value_type* __s, size_type __n); 1125 _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string& assign(const value_type* __s); 1126 _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string& assign(size_type __n, value_type __c); 1127 template<class _InputIterator> 1128 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_AFTER_CXX17 1129 __enable_if_t 1130 < 1131 __is_exactly_cpp17_input_iterator<_InputIterator>::value, 1132 basic_string& 1133 > 1134 assign(_InputIterator __first, _InputIterator __last); 1135 template<class _ForwardIterator> 1136 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_AFTER_CXX17 1137 __enable_if_t 1138 < 1139 __is_cpp17_forward_iterator<_ForwardIterator>::value, 1140 basic_string& 1141 > 1142 assign(_ForwardIterator __first, _ForwardIterator __last); 1143#ifndef _LIBCPP_CXX03_LANG 1144 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1145 basic_string& assign(initializer_list<value_type> __il) {return assign(__il.begin(), __il.size());} 1146#endif // _LIBCPP_CXX03_LANG 1147 1148 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1149 basic_string& insert(size_type __pos1, const basic_string& __str); 1150 1151 template <class _Tp> 1152 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_AFTER_CXX17 1153 __enable_if_t 1154 < 1155 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1156 basic_string& 1157 > 1158 insert(size_type __pos1, const _Tp& __t) 1159 { __self_view __sv = __t; return insert(__pos1, __sv.data(), __sv.size()); } 1160 1161 template <class _Tp> 1162 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_AFTER_CXX17 1163 __enable_if_t 1164 < 1165 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value && !__is_same_uncvref<_Tp, basic_string>::value, 1166 basic_string& 1167 > 1168 insert(size_type __pos1, const _Tp& __t, size_type __pos2, size_type __n=npos); 1169 _LIBCPP_CONSTEXPR_AFTER_CXX17 1170 basic_string& insert(size_type __pos1, const basic_string& __str, size_type __pos2, size_type __n=npos); 1171 _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string& insert(size_type __pos, const value_type* __s, size_type __n); 1172 _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string& insert(size_type __pos, const value_type* __s); 1173 _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string& insert(size_type __pos, size_type __n, value_type __c); 1174 _LIBCPP_CONSTEXPR_AFTER_CXX17 iterator insert(const_iterator __pos, value_type __c); 1175 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1176 iterator insert(const_iterator __pos, size_type __n, value_type __c); 1177 template<class _InputIterator> 1178 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_AFTER_CXX17 1179 __enable_if_t 1180 < 1181 __is_exactly_cpp17_input_iterator<_InputIterator>::value, 1182 iterator 1183 > 1184 insert(const_iterator __pos, _InputIterator __first, _InputIterator __last); 1185 template<class _ForwardIterator> 1186 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_AFTER_CXX17 1187 __enable_if_t 1188 < 1189 __is_cpp17_forward_iterator<_ForwardIterator>::value, 1190 iterator 1191 > 1192 insert(const_iterator __pos, _ForwardIterator __first, _ForwardIterator __last); 1193#ifndef _LIBCPP_CXX03_LANG 1194 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1195 iterator insert(const_iterator __pos, initializer_list<value_type> __il) 1196 {return insert(__pos, __il.begin(), __il.end());} 1197#endif // _LIBCPP_CXX03_LANG 1198 1199 _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string& erase(size_type __pos = 0, size_type __n = npos); 1200 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1201 iterator erase(const_iterator __pos); 1202 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1203 iterator erase(const_iterator __first, const_iterator __last); 1204 1205 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1206 basic_string& replace(size_type __pos1, size_type __n1, const basic_string& __str); 1207 1208 template <class _Tp> 1209 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_AFTER_CXX17 1210 __enable_if_t 1211 < 1212 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1213 basic_string& 1214 > 1215 replace(size_type __pos1, size_type __n1, const _Tp& __t) { __self_view __sv = __t; return replace(__pos1, __n1, __sv.data(), __sv.size()); } 1216 _LIBCPP_CONSTEXPR_AFTER_CXX17 1217 basic_string& replace(size_type __pos1, size_type __n1, const basic_string& __str, size_type __pos2, size_type __n2=npos); 1218 template <class _Tp> 1219 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_AFTER_CXX17 1220 __enable_if_t 1221 < 1222 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value && !__is_same_uncvref<_Tp, basic_string>::value, 1223 basic_string& 1224 > 1225 replace(size_type __pos1, size_type __n1, const _Tp& __t, size_type __pos2, size_type __n2=npos); 1226 _LIBCPP_CONSTEXPR_AFTER_CXX17 1227 basic_string& replace(size_type __pos, size_type __n1, const value_type* __s, size_type __n2); 1228 _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string& replace(size_type __pos, size_type __n1, const value_type* __s); 1229 _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string& replace(size_type __pos, size_type __n1, size_type __n2, value_type __c); 1230 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1231 basic_string& replace(const_iterator __i1, const_iterator __i2, const basic_string& __str); 1232 1233 template <class _Tp> 1234 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_AFTER_CXX17 1235 __enable_if_t 1236 < 1237 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1238 basic_string& 1239 > 1240 replace(const_iterator __i1, const_iterator __i2, const _Tp& __t) { __self_view __sv = __t; return replace(__i1 - begin(), __i2 - __i1, __sv); } 1241 1242 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1243 basic_string& replace(const_iterator __i1, const_iterator __i2, const value_type* __s, size_type __n); 1244 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1245 basic_string& replace(const_iterator __i1, const_iterator __i2, const value_type* __s); 1246 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1247 basic_string& replace(const_iterator __i1, const_iterator __i2, size_type __n, value_type __c); 1248 template<class _InputIterator> 1249 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_AFTER_CXX17 1250 __enable_if_t 1251 < 1252 __is_cpp17_input_iterator<_InputIterator>::value, 1253 basic_string& 1254 > 1255 replace(const_iterator __i1, const_iterator __i2, _InputIterator __j1, _InputIterator __j2); 1256#ifndef _LIBCPP_CXX03_LANG 1257 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1258 basic_string& replace(const_iterator __i1, const_iterator __i2, initializer_list<value_type> __il) 1259 {return replace(__i1, __i2, __il.begin(), __il.end());} 1260#endif // _LIBCPP_CXX03_LANG 1261 1262 _LIBCPP_CONSTEXPR_AFTER_CXX17 size_type copy(value_type* __s, size_type __n, size_type __pos = 0) const; 1263 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1264 basic_string substr(size_type __pos = 0, size_type __n = npos) const; 1265 1266 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1267 void swap(basic_string& __str) 1268#if _LIBCPP_STD_VER >= 14 1269 _NOEXCEPT; 1270#else 1271 _NOEXCEPT_(!__alloc_traits::propagate_on_container_swap::value || 1272 __is_nothrow_swappable<allocator_type>::value); 1273#endif 1274 1275 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1276 const value_type* c_str() const _NOEXCEPT {return data();} 1277 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1278 const value_type* data() const _NOEXCEPT {return std::__to_address(__get_pointer());} 1279#if _LIBCPP_STD_VER > 14 || defined(_LIBCPP_BUILDING_LIBRARY) 1280 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1281 value_type* data() _NOEXCEPT {return std::__to_address(__get_pointer());} 1282#endif 1283 1284 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1285 allocator_type get_allocator() const _NOEXCEPT {return __alloc();} 1286 1287 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1288 size_type find(const basic_string& __str, size_type __pos = 0) const _NOEXCEPT; 1289 1290 template <class _Tp> 1291 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_AFTER_CXX17 1292 __enable_if_t 1293 < 1294 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1295 size_type 1296 > 1297 find(const _Tp& __t, size_type __pos = 0) const _NOEXCEPT; 1298 _LIBCPP_CONSTEXPR_AFTER_CXX17 1299 size_type find(const value_type* __s, size_type __pos, size_type __n) const _NOEXCEPT; 1300 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1301 size_type find(const value_type* __s, size_type __pos = 0) const _NOEXCEPT; 1302 _LIBCPP_CONSTEXPR_AFTER_CXX17 size_type find(value_type __c, size_type __pos = 0) const _NOEXCEPT; 1303 1304 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1305 size_type rfind(const basic_string& __str, size_type __pos = npos) const _NOEXCEPT; 1306 1307 template <class _Tp> 1308 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_AFTER_CXX17 1309 __enable_if_t 1310 < 1311 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1312 size_type 1313 > 1314 rfind(const _Tp& __t, size_type __pos = npos) const _NOEXCEPT; 1315 _LIBCPP_CONSTEXPR_AFTER_CXX17 1316 size_type rfind(const value_type* __s, size_type __pos, size_type __n) const _NOEXCEPT; 1317 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1318 size_type rfind(const value_type* __s, size_type __pos = npos) const _NOEXCEPT; 1319 _LIBCPP_CONSTEXPR_AFTER_CXX17 size_type rfind(value_type __c, size_type __pos = npos) const _NOEXCEPT; 1320 1321 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1322 size_type find_first_of(const basic_string& __str, size_type __pos = 0) const _NOEXCEPT; 1323 1324 template <class _Tp> 1325 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_AFTER_CXX17 1326 __enable_if_t 1327 < 1328 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1329 size_type 1330 > 1331 find_first_of(const _Tp& __t, size_type __pos = 0) const _NOEXCEPT; 1332 _LIBCPP_CONSTEXPR_AFTER_CXX17 1333 size_type find_first_of(const value_type* __s, size_type __pos, size_type __n) const _NOEXCEPT; 1334 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1335 size_type find_first_of(const value_type* __s, size_type __pos = 0) const _NOEXCEPT; 1336 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1337 size_type find_first_of(value_type __c, size_type __pos = 0) const _NOEXCEPT; 1338 1339 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1340 size_type find_last_of(const basic_string& __str, size_type __pos = npos) const _NOEXCEPT; 1341 1342 template <class _Tp> 1343 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_AFTER_CXX17 1344 __enable_if_t 1345 < 1346 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1347 size_type 1348 > 1349 find_last_of(const _Tp& __t, size_type __pos = npos) const _NOEXCEPT; 1350 _LIBCPP_CONSTEXPR_AFTER_CXX17 1351 size_type find_last_of(const value_type* __s, size_type __pos, size_type __n) const _NOEXCEPT; 1352 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1353 size_type find_last_of(const value_type* __s, size_type __pos = npos) const _NOEXCEPT; 1354 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1355 size_type find_last_of(value_type __c, size_type __pos = npos) const _NOEXCEPT; 1356 1357 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1358 size_type find_first_not_of(const basic_string& __str, size_type __pos = 0) const _NOEXCEPT; 1359 1360 template <class _Tp> 1361 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_AFTER_CXX17 1362 __enable_if_t 1363 < 1364 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1365 size_type 1366 > 1367 find_first_not_of(const _Tp &__t, size_type __pos = 0) const _NOEXCEPT; 1368 _LIBCPP_CONSTEXPR_AFTER_CXX17 1369 size_type find_first_not_of(const value_type* __s, size_type __pos, size_type __n) const _NOEXCEPT; 1370 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1371 size_type find_first_not_of(const value_type* __s, size_type __pos = 0) const _NOEXCEPT; 1372 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1373 size_type find_first_not_of(value_type __c, size_type __pos = 0) const _NOEXCEPT; 1374 1375 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1376 size_type find_last_not_of(const basic_string& __str, size_type __pos = npos) const _NOEXCEPT; 1377 1378 template <class _Tp> 1379 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_AFTER_CXX17 1380 __enable_if_t 1381 < 1382 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1383 size_type 1384 > 1385 find_last_not_of(const _Tp& __t, size_type __pos = npos) const _NOEXCEPT; 1386 _LIBCPP_CONSTEXPR_AFTER_CXX17 1387 size_type find_last_not_of(const value_type* __s, size_type __pos, size_type __n) const _NOEXCEPT; 1388 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1389 size_type find_last_not_of(const value_type* __s, size_type __pos = npos) const _NOEXCEPT; 1390 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1391 size_type find_last_not_of(value_type __c, size_type __pos = npos) const _NOEXCEPT; 1392 1393 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1394 int compare(const basic_string& __str) const _NOEXCEPT; 1395 1396 template <class _Tp> 1397 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_AFTER_CXX17 1398 __enable_if_t 1399 < 1400 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1401 int 1402 > 1403 compare(const _Tp &__t) const _NOEXCEPT; 1404 1405 template <class _Tp> 1406 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_AFTER_CXX17 1407 __enable_if_t 1408 < 1409 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 1410 int 1411 > 1412 compare(size_type __pos1, size_type __n1, const _Tp& __t) const; 1413 1414 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1415 int compare(size_type __pos1, size_type __n1, const basic_string& __str) const; 1416 _LIBCPP_CONSTEXPR_AFTER_CXX17 1417 int compare(size_type __pos1, size_type __n1, const basic_string& __str, size_type __pos2, 1418 size_type __n2 = npos) const; 1419 1420 template <class _Tp> 1421 inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1422 __enable_if_t 1423 < 1424 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value && !__is_same_uncvref<_Tp, basic_string>::value, 1425 int 1426 > 1427 compare(size_type __pos1, size_type __n1, const _Tp& __t, size_type __pos2, size_type __n2=npos) const; 1428 _LIBCPP_CONSTEXPR_AFTER_CXX17 int compare(const value_type* __s) const _NOEXCEPT; 1429 _LIBCPP_CONSTEXPR_AFTER_CXX17 int compare(size_type __pos1, size_type __n1, const value_type* __s) const; 1430 _LIBCPP_CONSTEXPR_AFTER_CXX17 1431 int compare(size_type __pos1, size_type __n1, const value_type* __s, size_type __n2) const; 1432 1433#if _LIBCPP_STD_VER > 17 1434 constexpr _LIBCPP_HIDE_FROM_ABI 1435 bool starts_with(__self_view __sv) const noexcept 1436 { return __self_view(data(), size()).starts_with(__sv); } 1437 1438 constexpr _LIBCPP_HIDE_FROM_ABI 1439 bool starts_with(value_type __c) const noexcept 1440 { return !empty() && _Traits::eq(front(), __c); } 1441 1442 constexpr _LIBCPP_HIDE_FROM_ABI 1443 bool starts_with(const value_type* __s) const noexcept 1444 { return starts_with(__self_view(__s)); } 1445 1446 constexpr _LIBCPP_HIDE_FROM_ABI 1447 bool ends_with(__self_view __sv) const noexcept 1448 { return __self_view(data(), size()).ends_with( __sv); } 1449 1450 constexpr _LIBCPP_HIDE_FROM_ABI 1451 bool ends_with(value_type __c) const noexcept 1452 { return !empty() && _Traits::eq(back(), __c); } 1453 1454 constexpr _LIBCPP_HIDE_FROM_ABI 1455 bool ends_with(const value_type* __s) const noexcept 1456 { return ends_with(__self_view(__s)); } 1457#endif 1458 1459#if _LIBCPP_STD_VER > 20 1460 constexpr _LIBCPP_HIDE_FROM_ABI 1461 bool contains(__self_view __sv) const noexcept 1462 { return __self_view(data(), size()).contains(__sv); } 1463 1464 constexpr _LIBCPP_HIDE_FROM_ABI 1465 bool contains(value_type __c) const noexcept 1466 { return __self_view(data(), size()).contains(__c); } 1467 1468 constexpr _LIBCPP_HIDE_FROM_ABI 1469 bool contains(const value_type* __s) const 1470 { return __self_view(data(), size()).contains(__s); } 1471#endif 1472 1473 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 bool __invariants() const; 1474 1475 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 void __clear_and_shrink() _NOEXCEPT; 1476 1477#if _LIBCPP_DEBUG_LEVEL == 2 1478 1479 bool __dereferenceable(const const_iterator* __i) const; 1480 bool __decrementable(const const_iterator* __i) const; 1481 bool __addable(const const_iterator* __i, ptrdiff_t __n) const; 1482 bool __subscriptable(const const_iterator* __i, ptrdiff_t __n) const; 1483 1484#endif // _LIBCPP_DEBUG_LEVEL == 2 1485 1486private: 1487 template<class _Alloc> 1488 inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1489 bool friend operator==(const basic_string<char, char_traits<char>, _Alloc>& __lhs, 1490 const basic_string<char, char_traits<char>, _Alloc>& __rhs) _NOEXCEPT; 1491 1492 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 void __shrink_or_extend(size_type __target_capacity); 1493 1494 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1495 bool __is_long() const _NOEXCEPT { 1496 if (__libcpp_is_constant_evaluated()) 1497 return true; 1498 return __r_.first().__s.__is_long_; 1499 } 1500 1501 static _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 void __begin_lifetime(pointer __begin, size_type __n) { 1502#if _LIBCPP_STD_VER > 17 1503 if (__libcpp_is_constant_evaluated()) { 1504 for (size_type __i = 0; __i != __n; ++__i) 1505 std::construct_at(std::addressof(__begin[__i])); 1506 } 1507#else 1508 (void)__begin; 1509 (void)__n; 1510#endif // _LIBCPP_STD_VER > 17 1511 } 1512 1513 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 void __default_init() { 1514 __zero(); 1515 if (__libcpp_is_constant_evaluated()) { 1516 size_type __sz = __recommend(0) + 1; 1517 pointer __ptr = __alloc_traits::allocate(__alloc(), __sz); 1518 __begin_lifetime(__ptr, __sz); 1519 __set_long_pointer(__ptr); 1520 __set_long_cap(__sz); 1521 __set_long_size(0); 1522 } 1523 } 1524 1525 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 void __deallocate_constexpr() { 1526 if (__libcpp_is_constant_evaluated() && __get_pointer() != nullptr) 1527 __alloc_traits::deallocate(__alloc(), __get_pointer(), __get_long_cap()); 1528 } 1529 1530 _LIBCPP_CONSTEXPR _LIBCPP_HIDE_FROM_ABI static bool __fits_in_sso(size_type __sz) { 1531 // SSO is disabled during constant evaluation because `__is_long` isn't constexpr friendly 1532 return !__libcpp_is_constant_evaluated() && (__sz < __min_cap); 1533 } 1534 1535 template <class _ForwardIterator> 1536 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX11 1537 iterator __insert_from_safe_copy(size_type __n, size_type __ip, _ForwardIterator __first, _ForwardIterator __last) { 1538 size_type __sz = size(); 1539 size_type __cap = capacity(); 1540 value_type* __p; 1541 if (__cap - __sz >= __n) 1542 { 1543 __p = std::__to_address(__get_pointer()); 1544 size_type __n_move = __sz - __ip; 1545 if (__n_move != 0) 1546 traits_type::move(__p + __ip + __n, __p + __ip, __n_move); 1547 } 1548 else 1549 { 1550 __grow_by(__cap, __sz + __n - __cap, __sz, __ip, 0, __n); 1551 __p = std::__to_address(__get_long_pointer()); 1552 } 1553 __sz += __n; 1554 __set_size(__sz); 1555 traits_type::assign(__p[__sz], value_type()); 1556 for (__p += __ip; __first != __last; ++__p, ++__first) 1557 traits_type::assign(*__p, *__first); 1558 1559 return begin() + __ip; 1560 } 1561 1562 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX11 allocator_type& __alloc() _NOEXCEPT { return __r_.second(); } 1563 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR const allocator_type& __alloc() const _NOEXCEPT { return __r_.second(); } 1564 1565 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1566 void __set_short_size(size_type __s) _NOEXCEPT { 1567 _LIBCPP_ASSERT(__s < __min_cap, "__s should never be greater than or equal to the short string capacity"); 1568 __r_.first().__s.__size_ = __s; 1569 __r_.first().__s.__is_long_ = false; 1570 } 1571 1572 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1573 size_type __get_short_size() const _NOEXCEPT { 1574 _LIBCPP_ASSERT(!__r_.first().__s.__is_long_, "String has to be short when trying to get the short size"); 1575 return __r_.first().__s.__size_; 1576 } 1577 1578 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1579 void __set_long_size(size_type __s) _NOEXCEPT 1580 {__r_.first().__l.__size_ = __s;} 1581 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1582 size_type __get_long_size() const _NOEXCEPT 1583 {return __r_.first().__l.__size_;} 1584 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1585 void __set_size(size_type __s) _NOEXCEPT 1586 {if (__is_long()) __set_long_size(__s); else __set_short_size(__s);} 1587 1588 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1589 void __set_long_cap(size_type __s) _NOEXCEPT { 1590 __r_.first().__l.__cap_ = __s / __endian_factor; 1591 __r_.first().__l.__is_long_ = true; 1592 } 1593 1594 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1595 size_type __get_long_cap() const _NOEXCEPT { 1596 return __r_.first().__l.__cap_ * __endian_factor; 1597 } 1598 1599 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1600 void __set_long_pointer(pointer __p) _NOEXCEPT 1601 {__r_.first().__l.__data_ = __p;} 1602 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1603 pointer __get_long_pointer() _NOEXCEPT 1604 {return __r_.first().__l.__data_;} 1605 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1606 const_pointer __get_long_pointer() const _NOEXCEPT 1607 {return __r_.first().__l.__data_;} 1608 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1609 pointer __get_short_pointer() _NOEXCEPT 1610 {return pointer_traits<pointer>::pointer_to(__r_.first().__s.__data_[0]);} 1611 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1612 const_pointer __get_short_pointer() const _NOEXCEPT 1613 {return pointer_traits<const_pointer>::pointer_to(__r_.first().__s.__data_[0]);} 1614 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1615 pointer __get_pointer() _NOEXCEPT 1616 {return __is_long() ? __get_long_pointer() : __get_short_pointer();} 1617 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1618 const_pointer __get_pointer() const _NOEXCEPT 1619 {return __is_long() ? __get_long_pointer() : __get_short_pointer();} 1620 1621 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1622 void __zero() _NOEXCEPT { 1623 __r_.first() = __rep(); 1624 } 1625 1626 template <size_type __a> static 1627 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1628 size_type __align_it(size_type __s) _NOEXCEPT 1629 {return (__s + (__a-1)) & ~(__a-1);} 1630 enum {__alignment = 16}; 1631 static _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1632 size_type __recommend(size_type __s) _NOEXCEPT 1633 { 1634 if (__s < __min_cap) { 1635 if (__libcpp_is_constant_evaluated()) 1636 return static_cast<size_type>(__min_cap); 1637 else 1638 return static_cast<size_type>(__min_cap) - 1; 1639 } 1640 size_type __guess = __align_it<sizeof(value_type) < __alignment ? 1641 __alignment/sizeof(value_type) : 1 > (__s+1) - 1; 1642 if (__guess == __min_cap) ++__guess; 1643 return __guess; 1644 } 1645 1646 inline _LIBCPP_CONSTEXPR_AFTER_CXX17 1647 void __init(const value_type* __s, size_type __sz, size_type __reserve); 1648 inline _LIBCPP_CONSTEXPR_AFTER_CXX17 1649 void __init(const value_type* __s, size_type __sz); 1650 inline _LIBCPP_CONSTEXPR_AFTER_CXX17 1651 void __init(size_type __n, value_type __c); 1652 1653 // Slow path for the (inlined) copy constructor for 'long' strings. 1654 // Always externally instantiated and not inlined. 1655 // Requires that __s is zero terminated. 1656 // The main reason for this function to exist is because for unstable, we 1657 // want to allow inlining of the copy constructor. However, we don't want 1658 // to call the __init() functions as those are marked as inline which may 1659 // result in over-aggressive inlining by the compiler, where our aim is 1660 // to only inline the fast path code directly in the ctor. 1661 _LIBCPP_CONSTEXPR_AFTER_CXX17 void __init_copy_ctor_external(const value_type* __s, size_type __sz); 1662 1663 template <class _InputIterator> 1664 inline _LIBCPP_CONSTEXPR_AFTER_CXX17 1665 __enable_if_t 1666 < 1667 __is_exactly_cpp17_input_iterator<_InputIterator>::value 1668 > 1669 __init(_InputIterator __first, _InputIterator __last); 1670 1671 template <class _ForwardIterator> 1672 inline _LIBCPP_CONSTEXPR_AFTER_CXX17 1673 __enable_if_t 1674 < 1675 __is_cpp17_forward_iterator<_ForwardIterator>::value 1676 > 1677 __init(_ForwardIterator __first, _ForwardIterator __last); 1678 1679 _LIBCPP_CONSTEXPR_AFTER_CXX17 1680 void __grow_by(size_type __old_cap, size_type __delta_cap, size_type __old_sz, 1681 size_type __n_copy, size_type __n_del, size_type __n_add = 0); 1682 _LIBCPP_CONSTEXPR_AFTER_CXX17 1683 void __grow_by_and_replace(size_type __old_cap, size_type __delta_cap, size_type __old_sz, 1684 size_type __n_copy, size_type __n_del, 1685 size_type __n_add, const value_type* __p_new_stuff); 1686 1687 // __assign_no_alias is invoked for assignment operations where we 1688 // have proof that the input does not alias the current instance. 1689 // For example, operator=(basic_string) performs a 'self' check. 1690 template <bool __is_short> 1691 _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string& __assign_no_alias(const value_type* __s, size_type __n); 1692 1693 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1694 void __erase_to_end(size_type __pos); 1695 1696 // __erase_external_with_move is invoked for erase() invocations where 1697 // `n ~= npos`, likely requiring memory moves on the string data. 1698 _LIBCPP_CONSTEXPR_AFTER_CXX17 void __erase_external_with_move(size_type __pos, size_type __n); 1699 1700 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1701 void __copy_assign_alloc(const basic_string& __str) 1702 {__copy_assign_alloc(__str, integral_constant<bool, 1703 __alloc_traits::propagate_on_container_copy_assignment::value>());} 1704 1705 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1706 void __copy_assign_alloc(const basic_string& __str, true_type) 1707 { 1708 if (__alloc() == __str.__alloc()) 1709 __alloc() = __str.__alloc(); 1710 else 1711 { 1712 if (!__str.__is_long()) 1713 { 1714 __clear_and_shrink(); 1715 __alloc() = __str.__alloc(); 1716 } 1717 else 1718 { 1719 allocator_type __a = __str.__alloc(); 1720 auto __allocation = std::__allocate_at_least(__a, __str.__get_long_cap()); 1721 __begin_lifetime(__allocation.ptr, __allocation.count); 1722 __clear_and_shrink(); 1723 __alloc() = std::move(__a); 1724 __set_long_pointer(__allocation.ptr); 1725 __set_long_cap(__allocation.count); 1726 __set_long_size(__str.size()); 1727 } 1728 } 1729 } 1730 1731 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1732 void __copy_assign_alloc(const basic_string&, false_type) _NOEXCEPT 1733 {} 1734 1735#ifndef _LIBCPP_CXX03_LANG 1736 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1737 void __move_assign(basic_string& __str, false_type) 1738 _NOEXCEPT_(__alloc_traits::is_always_equal::value); 1739 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1740 void __move_assign(basic_string& __str, true_type) 1741#if _LIBCPP_STD_VER > 14 1742 _NOEXCEPT; 1743#else 1744 _NOEXCEPT_(is_nothrow_move_assignable<allocator_type>::value); 1745#endif 1746#endif 1747 1748 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1749 void 1750 __move_assign_alloc(basic_string& __str) 1751 _NOEXCEPT_( 1752 !__alloc_traits::propagate_on_container_move_assignment::value || 1753 is_nothrow_move_assignable<allocator_type>::value) 1754 {__move_assign_alloc(__str, integral_constant<bool, 1755 __alloc_traits::propagate_on_container_move_assignment::value>());} 1756 1757 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1758 void __move_assign_alloc(basic_string& __c, true_type) 1759 _NOEXCEPT_(is_nothrow_move_assignable<allocator_type>::value) 1760 { 1761 __alloc() = std::move(__c.__alloc()); 1762 } 1763 1764 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1765 void __move_assign_alloc(basic_string&, false_type) 1766 _NOEXCEPT 1767 {} 1768 1769 _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string& __assign_external(const value_type* __s); 1770 _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string& __assign_external(const value_type* __s, size_type __n); 1771 1772 // Assigns the value in __s, guaranteed to be __n < __min_cap in length. 1773 inline basic_string& __assign_short(const value_type* __s, size_type __n) { 1774 pointer __p = __is_long() 1775 ? (__set_long_size(__n), __get_long_pointer()) 1776 : (__set_short_size(__n), __get_short_pointer()); 1777 traits_type::move(std::__to_address(__p), __s, __n); 1778 traits_type::assign(__p[__n], value_type()); 1779 return *this; 1780 } 1781 1782 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1783 basic_string& __null_terminate_at(value_type* __p, size_type __newsz) { 1784 __set_size(__newsz); 1785 __invalidate_iterators_past(__newsz); 1786 traits_type::assign(__p[__newsz], value_type()); 1787 return *this; 1788 } 1789 1790 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 void __invalidate_iterators_past(size_type); 1791 1792 template<class _Tp> 1793 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1794 bool __addr_in_range(_Tp&& __t) const { 1795 // assume that the ranges overlap, because we can't check during constant evaluation 1796 if (__libcpp_is_constant_evaluated()) 1797 return true; 1798 const volatile void *__p = std::addressof(__t); 1799 return data() <= __p && __p <= data() + size(); 1800 } 1801 1802 _LIBCPP_NORETURN _LIBCPP_HIDE_FROM_ABI 1803 void __throw_length_error() const { 1804 std::__throw_length_error("basic_string"); 1805 } 1806 1807 _LIBCPP_NORETURN _LIBCPP_HIDE_FROM_ABI 1808 void __throw_out_of_range() const { 1809 std::__throw_out_of_range("basic_string"); 1810 } 1811 1812 friend _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string operator+<>(const basic_string&, const basic_string&); 1813 friend _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string operator+<>(const value_type*, const basic_string&); 1814 friend _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string operator+<>(value_type, const basic_string&); 1815 friend _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string operator+<>(const basic_string&, const value_type*); 1816 friend _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string operator+<>(const basic_string&, value_type); 1817}; 1818 1819// These declarations must appear before any functions are implicitly used 1820// so that they have the correct visibility specifier. 1821#ifdef _LIBCPP_ABI_STRING_OPTIMIZED_EXTERNAL_INSTANTIATION 1822 _LIBCPP_STRING_UNSTABLE_EXTERN_TEMPLATE_LIST(_LIBCPP_EXTERN_TEMPLATE, char) 1823# ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 1824 _LIBCPP_STRING_UNSTABLE_EXTERN_TEMPLATE_LIST(_LIBCPP_EXTERN_TEMPLATE, wchar_t) 1825# endif 1826#else 1827 _LIBCPP_STRING_V1_EXTERN_TEMPLATE_LIST(_LIBCPP_EXTERN_TEMPLATE, char) 1828# ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 1829 _LIBCPP_STRING_V1_EXTERN_TEMPLATE_LIST(_LIBCPP_EXTERN_TEMPLATE, wchar_t) 1830# endif 1831#endif 1832 1833 1834#if _LIBCPP_STD_VER >= 17 1835template<class _InputIterator, 1836 class _CharT = __iter_value_type<_InputIterator>, 1837 class _Allocator = allocator<_CharT>, 1838 class = enable_if_t<__is_cpp17_input_iterator<_InputIterator>::value>, 1839 class = enable_if_t<__is_allocator<_Allocator>::value> 1840 > 1841basic_string(_InputIterator, _InputIterator, _Allocator = _Allocator()) 1842 -> basic_string<_CharT, char_traits<_CharT>, _Allocator>; 1843 1844template<class _CharT, 1845 class _Traits, 1846 class _Allocator = allocator<_CharT>, 1847 class = enable_if_t<__is_allocator<_Allocator>::value> 1848 > 1849explicit basic_string(basic_string_view<_CharT, _Traits>, const _Allocator& = _Allocator()) 1850 -> basic_string<_CharT, _Traits, _Allocator>; 1851 1852template<class _CharT, 1853 class _Traits, 1854 class _Allocator = allocator<_CharT>, 1855 class = enable_if_t<__is_allocator<_Allocator>::value>, 1856 class _Sz = typename allocator_traits<_Allocator>::size_type 1857 > 1858basic_string(basic_string_view<_CharT, _Traits>, _Sz, _Sz, const _Allocator& = _Allocator()) 1859 -> basic_string<_CharT, _Traits, _Allocator>; 1860#endif 1861 1862template <class _CharT, class _Traits, class _Allocator> 1863inline _LIBCPP_CONSTEXPR_AFTER_CXX17 1864void 1865basic_string<_CharT, _Traits, _Allocator>::__invalidate_iterators_past(size_type __pos) 1866{ 1867#if _LIBCPP_DEBUG_LEVEL == 2 1868 if (!__libcpp_is_constant_evaluated()) { 1869 __c_node* __c = __get_db()->__find_c_and_lock(this); 1870 if (__c) 1871 { 1872 const_pointer __new_last = __get_pointer() + __pos; 1873 for (__i_node** __p = __c->end_; __p != __c->beg_; ) 1874 { 1875 --__p; 1876 const_iterator* __i = static_cast<const_iterator*>((*__p)->__i_); 1877 if (__i->base() > __new_last) 1878 { 1879 (*__p)->__c_ = nullptr; 1880 if (--__c->end_ != __p) 1881 std::memmove(__p, __p+1, (__c->end_ - __p)*sizeof(__i_node*)); 1882 } 1883 } 1884 __get_db()->unlock(); 1885 } 1886 } 1887#else 1888 (void)__pos; 1889#endif // _LIBCPP_DEBUG_LEVEL == 2 1890} 1891 1892template <class _CharT, class _Traits, class _Allocator> 1893inline _LIBCPP_CONSTEXPR_AFTER_CXX17 1894basic_string<_CharT, _Traits, _Allocator>::basic_string() 1895 _NOEXCEPT_(is_nothrow_default_constructible<allocator_type>::value) 1896 : __r_(__default_init_tag(), __default_init_tag()) 1897{ 1898 std::__debug_db_insert_c(this); 1899 __default_init(); 1900} 1901 1902template <class _CharT, class _Traits, class _Allocator> 1903inline _LIBCPP_CONSTEXPR_AFTER_CXX17 1904basic_string<_CharT, _Traits, _Allocator>::basic_string(const allocator_type& __a) 1905#if _LIBCPP_STD_VER <= 14 1906 _NOEXCEPT_(is_nothrow_copy_constructible<allocator_type>::value) 1907#else 1908 _NOEXCEPT 1909#endif 1910: __r_(__default_init_tag(), __a) 1911{ 1912 std::__debug_db_insert_c(this); 1913 __default_init(); 1914} 1915 1916template <class _CharT, class _Traits, class _Allocator> 1917_LIBCPP_CONSTEXPR_AFTER_CXX17 1918void basic_string<_CharT, _Traits, _Allocator>::__init(const value_type* __s, 1919 size_type __sz, 1920 size_type __reserve) 1921{ 1922 if (__libcpp_is_constant_evaluated()) 1923 __zero(); 1924 if (__reserve > max_size()) 1925 __throw_length_error(); 1926 pointer __p; 1927 if (__fits_in_sso(__reserve)) 1928 { 1929 __set_short_size(__sz); 1930 __p = __get_short_pointer(); 1931 } 1932 else 1933 { 1934 auto __allocation = std::__allocate_at_least(__alloc(), __recommend(__reserve) + 1); 1935 __p = __allocation.ptr; 1936 __begin_lifetime(__p, __allocation.count); 1937 __set_long_pointer(__p); 1938 __set_long_cap(__allocation.count); 1939 __set_long_size(__sz); 1940 } 1941 traits_type::copy(std::__to_address(__p), __s, __sz); 1942 traits_type::assign(__p[__sz], value_type()); 1943} 1944 1945template <class _CharT, class _Traits, class _Allocator> 1946_LIBCPP_CONSTEXPR_AFTER_CXX17 1947void 1948basic_string<_CharT, _Traits, _Allocator>::__init(const value_type* __s, size_type __sz) 1949{ 1950 if (__libcpp_is_constant_evaluated()) 1951 __zero(); 1952 if (__sz > max_size()) 1953 __throw_length_error(); 1954 pointer __p; 1955 if (__fits_in_sso(__sz)) 1956 { 1957 __set_short_size(__sz); 1958 __p = __get_short_pointer(); 1959 } 1960 else 1961 { 1962 auto __allocation = std::__allocate_at_least(__alloc(), __recommend(__sz) + 1); 1963 __p = __allocation.ptr; 1964 __begin_lifetime(__p, __allocation.count); 1965 __set_long_pointer(__p); 1966 __set_long_cap(__allocation.count); 1967 __set_long_size(__sz); 1968 } 1969 traits_type::copy(std::__to_address(__p), __s, __sz); 1970 traits_type::assign(__p[__sz], value_type()); 1971} 1972 1973template <class _CharT, class _Traits, class _Allocator> 1974template <class> 1975_LIBCPP_CONSTEXPR_AFTER_CXX17 1976basic_string<_CharT, _Traits, _Allocator>::basic_string(const _CharT* __s, const _Allocator& __a) 1977 : __r_(__default_init_tag(), __a) 1978{ 1979 _LIBCPP_ASSERT(__s != nullptr, "basic_string(const char*, allocator) detected nullptr"); 1980 __init(__s, traits_type::length(__s)); 1981 std::__debug_db_insert_c(this); 1982} 1983 1984template <class _CharT, class _Traits, class _Allocator> 1985inline _LIBCPP_CONSTEXPR_AFTER_CXX17 1986basic_string<_CharT, _Traits, _Allocator>::basic_string(const _CharT* __s, size_type __n) 1987 : __r_(__default_init_tag(), __default_init_tag()) 1988{ 1989 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "basic_string(const char*, n) detected nullptr"); 1990 __init(__s, __n); 1991 std::__debug_db_insert_c(this); 1992} 1993 1994template <class _CharT, class _Traits, class _Allocator> 1995inline _LIBCPP_CONSTEXPR_AFTER_CXX17 1996basic_string<_CharT, _Traits, _Allocator>::basic_string(const _CharT* __s, size_type __n, const _Allocator& __a) 1997 : __r_(__default_init_tag(), __a) 1998{ 1999 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "basic_string(const char*, n, allocator) detected nullptr"); 2000 __init(__s, __n); 2001 std::__debug_db_insert_c(this); 2002} 2003 2004template <class _CharT, class _Traits, class _Allocator> 2005_LIBCPP_CONSTEXPR_AFTER_CXX17 2006basic_string<_CharT, _Traits, _Allocator>::basic_string(const basic_string& __str) 2007 : __r_(__default_init_tag(), __alloc_traits::select_on_container_copy_construction(__str.__alloc())) 2008{ 2009 if (!__str.__is_long()) 2010 __r_.first().__r = __str.__r_.first().__r; 2011 else 2012 __init_copy_ctor_external(std::__to_address(__str.__get_long_pointer()), 2013 __str.__get_long_size()); 2014 std::__debug_db_insert_c(this); 2015} 2016 2017template <class _CharT, class _Traits, class _Allocator> 2018_LIBCPP_CONSTEXPR_AFTER_CXX17 2019basic_string<_CharT, _Traits, _Allocator>::basic_string( 2020 const basic_string& __str, const allocator_type& __a) 2021 : __r_(__default_init_tag(), __a) 2022{ 2023 if (!__str.__is_long()) 2024 __r_.first().__r = __str.__r_.first().__r; 2025 else 2026 __init_copy_ctor_external(std::__to_address(__str.__get_long_pointer()), 2027 __str.__get_long_size()); 2028 std::__debug_db_insert_c(this); 2029} 2030 2031template <class _CharT, class _Traits, class _Allocator> 2032_LIBCPP_CONSTEXPR_AFTER_CXX17 2033void basic_string<_CharT, _Traits, _Allocator>::__init_copy_ctor_external( 2034 const value_type* __s, size_type __sz) { 2035 if (__libcpp_is_constant_evaluated()) 2036 __zero(); 2037 pointer __p; 2038 if (__fits_in_sso(__sz)) { 2039 __p = __get_short_pointer(); 2040 __set_short_size(__sz); 2041 } else { 2042 if (__sz > max_size()) 2043 __throw_length_error(); 2044 auto __allocation = std::__allocate_at_least(__alloc(), __recommend(__sz) + 1); 2045 __p = __allocation.ptr; 2046 __begin_lifetime(__p, __allocation.count); 2047 __set_long_pointer(__p); 2048 __set_long_cap(__allocation.count); 2049 __set_long_size(__sz); 2050 } 2051 traits_type::copy(std::__to_address(__p), __s, __sz + 1); 2052} 2053 2054#ifndef _LIBCPP_CXX03_LANG 2055 2056template <class _CharT, class _Traits, class _Allocator> 2057inline _LIBCPP_CONSTEXPR_AFTER_CXX17 2058basic_string<_CharT, _Traits, _Allocator>::basic_string(basic_string&& __str) 2059#if _LIBCPP_STD_VER <= 14 2060 _NOEXCEPT_(is_nothrow_move_constructible<allocator_type>::value) 2061#else 2062 _NOEXCEPT 2063#endif 2064 : __r_(std::move(__str.__r_)) 2065{ 2066 __str.__default_init(); 2067 std::__debug_db_insert_c(this); 2068 if (__is_long()) 2069 std::__debug_db_swap(this, &__str); 2070} 2071 2072template <class _CharT, class _Traits, class _Allocator> 2073inline _LIBCPP_CONSTEXPR_AFTER_CXX17 2074basic_string<_CharT, _Traits, _Allocator>::basic_string(basic_string&& __str, const allocator_type& __a) 2075 : __r_(__default_init_tag(), __a) 2076{ 2077 if (__str.__is_long() && __a != __str.__alloc()) // copy, not move 2078 __init(std::__to_address(__str.__get_long_pointer()), __str.__get_long_size()); 2079 else 2080 { 2081 if (__libcpp_is_constant_evaluated()) { 2082 __zero(); 2083 __r_.first().__l = __str.__r_.first().__l; 2084 } else { 2085 __r_.first().__r = __str.__r_.first().__r; 2086 } 2087 __str.__default_init(); 2088 } 2089 std::__debug_db_insert_c(this); 2090 if (__is_long()) 2091 std::__debug_db_swap(this, &__str); 2092} 2093 2094#endif // _LIBCPP_CXX03_LANG 2095 2096template <class _CharT, class _Traits, class _Allocator> 2097_LIBCPP_CONSTEXPR_AFTER_CXX17 2098void 2099basic_string<_CharT, _Traits, _Allocator>::__init(size_type __n, value_type __c) 2100{ 2101 if (__libcpp_is_constant_evaluated()) 2102 __zero(); 2103 if (__n > max_size()) 2104 __throw_length_error(); 2105 pointer __p; 2106 if (__fits_in_sso(__n)) 2107 { 2108 __set_short_size(__n); 2109 __p = __get_short_pointer(); 2110 } 2111 else 2112 { 2113 auto __allocation = std::__allocate_at_least(__alloc(), __recommend(__n) + 1); 2114 __p = __allocation.ptr; 2115 __begin_lifetime(__p, __allocation.count); 2116 __set_long_pointer(__p); 2117 __set_long_cap(__allocation.count); 2118 __set_long_size(__n); 2119 } 2120 traits_type::assign(std::__to_address(__p), __n, __c); 2121 traits_type::assign(__p[__n], value_type()); 2122} 2123 2124template <class _CharT, class _Traits, class _Allocator> 2125inline _LIBCPP_CONSTEXPR_AFTER_CXX17 2126basic_string<_CharT, _Traits, _Allocator>::basic_string(size_type __n, _CharT __c) 2127 : __r_(__default_init_tag(), __default_init_tag()) 2128{ 2129 __init(__n, __c); 2130 std::__debug_db_insert_c(this); 2131} 2132 2133template <class _CharT, class _Traits, class _Allocator> 2134template <class> 2135_LIBCPP_CONSTEXPR_AFTER_CXX17 2136basic_string<_CharT, _Traits, _Allocator>::basic_string(size_type __n, _CharT __c, const _Allocator& __a) 2137 : __r_(__default_init_tag(), __a) 2138{ 2139 __init(__n, __c); 2140 std::__debug_db_insert_c(this); 2141} 2142 2143template <class _CharT, class _Traits, class _Allocator> 2144_LIBCPP_CONSTEXPR_AFTER_CXX17 2145basic_string<_CharT, _Traits, _Allocator>::basic_string(const basic_string& __str, 2146 size_type __pos, size_type __n, 2147 const _Allocator& __a) 2148 : __r_(__default_init_tag(), __a) 2149{ 2150 size_type __str_sz = __str.size(); 2151 if (__pos > __str_sz) 2152 __throw_out_of_range(); 2153 __init(__str.data() + __pos, std::min(__n, __str_sz - __pos)); 2154 std::__debug_db_insert_c(this); 2155} 2156 2157template <class _CharT, class _Traits, class _Allocator> 2158inline _LIBCPP_CONSTEXPR_AFTER_CXX17 2159basic_string<_CharT, _Traits, _Allocator>::basic_string(const basic_string& __str, size_type __pos, 2160 const _Allocator& __a) 2161 : __r_(__default_init_tag(), __a) 2162{ 2163 size_type __str_sz = __str.size(); 2164 if (__pos > __str_sz) 2165 __throw_out_of_range(); 2166 __init(__str.data() + __pos, __str_sz - __pos); 2167 std::__debug_db_insert_c(this); 2168} 2169 2170template <class _CharT, class _Traits, class _Allocator> 2171template <class _Tp, class> 2172_LIBCPP_CONSTEXPR_AFTER_CXX17 2173basic_string<_CharT, _Traits, _Allocator>::basic_string( 2174 const _Tp& __t, size_type __pos, size_type __n, const allocator_type& __a) 2175 : __r_(__default_init_tag(), __a) 2176{ 2177 __self_view __sv0 = __t; 2178 __self_view __sv = __sv0.substr(__pos, __n); 2179 __init(__sv.data(), __sv.size()); 2180 std::__debug_db_insert_c(this); 2181} 2182 2183template <class _CharT, class _Traits, class _Allocator> 2184template <class _Tp, class> 2185_LIBCPP_CONSTEXPR_AFTER_CXX17 2186basic_string<_CharT, _Traits, _Allocator>::basic_string(const _Tp & __t) 2187 : __r_(__default_init_tag(), __default_init_tag()) 2188{ 2189 __self_view __sv = __t; 2190 __init(__sv.data(), __sv.size()); 2191 std::__debug_db_insert_c(this); 2192} 2193 2194template <class _CharT, class _Traits, class _Allocator> 2195template <class _Tp, class> 2196_LIBCPP_CONSTEXPR_AFTER_CXX17 2197basic_string<_CharT, _Traits, _Allocator>::basic_string(const _Tp & __t, const _Allocator& __a) 2198 : __r_(__default_init_tag(), __a) 2199{ 2200 __self_view __sv = __t; 2201 __init(__sv.data(), __sv.size()); 2202 std::__debug_db_insert_c(this); 2203} 2204 2205template <class _CharT, class _Traits, class _Allocator> 2206template <class _InputIterator> 2207_LIBCPP_CONSTEXPR_AFTER_CXX17 2208__enable_if_t 2209< 2210 __is_exactly_cpp17_input_iterator<_InputIterator>::value 2211> 2212basic_string<_CharT, _Traits, _Allocator>::__init(_InputIterator __first, _InputIterator __last) 2213{ 2214 __default_init(); 2215#ifndef _LIBCPP_NO_EXCEPTIONS 2216 try 2217 { 2218#endif // _LIBCPP_NO_EXCEPTIONS 2219 for (; __first != __last; ++__first) 2220 push_back(*__first); 2221#ifndef _LIBCPP_NO_EXCEPTIONS 2222 } 2223 catch (...) 2224 { 2225 if (__is_long()) 2226 __alloc_traits::deallocate(__alloc(), __get_long_pointer(), __get_long_cap()); 2227 throw; 2228 } 2229#endif // _LIBCPP_NO_EXCEPTIONS 2230} 2231 2232template <class _CharT, class _Traits, class _Allocator> 2233template <class _ForwardIterator> 2234_LIBCPP_CONSTEXPR_AFTER_CXX17 2235__enable_if_t 2236< 2237 __is_cpp17_forward_iterator<_ForwardIterator>::value 2238> 2239basic_string<_CharT, _Traits, _Allocator>::__init(_ForwardIterator __first, _ForwardIterator __last) 2240{ 2241 if (__libcpp_is_constant_evaluated()) 2242 __zero(); 2243 size_type __sz = static_cast<size_type>(std::distance(__first, __last)); 2244 if (__sz > max_size()) 2245 __throw_length_error(); 2246 pointer __p; 2247 if (__fits_in_sso(__sz)) 2248 { 2249 __set_short_size(__sz); 2250 __p = __get_short_pointer(); 2251 } 2252 else 2253 { 2254 auto __allocation = std::__allocate_at_least(__alloc(), __recommend(__sz) + 1); 2255 __p = __allocation.ptr; 2256 __begin_lifetime(__p, __allocation.count); 2257 __set_long_pointer(__p); 2258 __set_long_cap(__allocation.count); 2259 __set_long_size(__sz); 2260 } 2261 2262#ifndef _LIBCPP_NO_EXCEPTIONS 2263 try 2264 { 2265#endif // _LIBCPP_NO_EXCEPTIONS 2266 for (; __first != __last; ++__first, (void) ++__p) 2267 traits_type::assign(*__p, *__first); 2268 traits_type::assign(*__p, value_type()); 2269#ifndef _LIBCPP_NO_EXCEPTIONS 2270 } 2271 catch (...) 2272 { 2273 if (__is_long()) 2274 __alloc_traits::deallocate(__alloc(), __get_long_pointer(), __get_long_cap()); 2275 throw; 2276 } 2277#endif // _LIBCPP_NO_EXCEPTIONS 2278} 2279 2280template <class _CharT, class _Traits, class _Allocator> 2281template<class _InputIterator, class> 2282inline _LIBCPP_CONSTEXPR_AFTER_CXX17 2283basic_string<_CharT, _Traits, _Allocator>::basic_string(_InputIterator __first, _InputIterator __last) 2284 : __r_(__default_init_tag(), __default_init_tag()) 2285{ 2286 __init(__first, __last); 2287 std::__debug_db_insert_c(this); 2288} 2289 2290template <class _CharT, class _Traits, class _Allocator> 2291template<class _InputIterator, class> 2292inline _LIBCPP_CONSTEXPR_AFTER_CXX17 2293basic_string<_CharT, _Traits, _Allocator>::basic_string(_InputIterator __first, _InputIterator __last, 2294 const allocator_type& __a) 2295 : __r_(__default_init_tag(), __a) 2296{ 2297 __init(__first, __last); 2298 std::__debug_db_insert_c(this); 2299} 2300 2301#ifndef _LIBCPP_CXX03_LANG 2302 2303template <class _CharT, class _Traits, class _Allocator> 2304inline _LIBCPP_CONSTEXPR_AFTER_CXX17 2305basic_string<_CharT, _Traits, _Allocator>::basic_string( 2306 initializer_list<_CharT> __il) 2307 : __r_(__default_init_tag(), __default_init_tag()) 2308{ 2309 __init(__il.begin(), __il.end()); 2310 std::__debug_db_insert_c(this); 2311} 2312 2313template <class _CharT, class _Traits, class _Allocator> 2314inline _LIBCPP_CONSTEXPR_AFTER_CXX17 2315basic_string<_CharT, _Traits, _Allocator>::basic_string( 2316 initializer_list<_CharT> __il, const _Allocator& __a) 2317 : __r_(__default_init_tag(), __a) 2318{ 2319 __init(__il.begin(), __il.end()); 2320 std::__debug_db_insert_c(this); 2321} 2322 2323#endif // _LIBCPP_CXX03_LANG 2324 2325template <class _CharT, class _Traits, class _Allocator> 2326_LIBCPP_CONSTEXPR_AFTER_CXX17 2327basic_string<_CharT, _Traits, _Allocator>::~basic_string() 2328{ 2329 std::__debug_db_erase_c(this); 2330 if (__is_long()) 2331 __alloc_traits::deallocate(__alloc(), __get_long_pointer(), __get_long_cap()); 2332} 2333 2334template <class _CharT, class _Traits, class _Allocator> 2335_LIBCPP_CONSTEXPR_AFTER_CXX17 2336void 2337basic_string<_CharT, _Traits, _Allocator>::__grow_by_and_replace 2338 (size_type __old_cap, size_type __delta_cap, size_type __old_sz, 2339 size_type __n_copy, size_type __n_del, size_type __n_add, const value_type* __p_new_stuff) 2340{ 2341 size_type __ms = max_size(); 2342 if (__delta_cap > __ms - __old_cap - 1) 2343 __throw_length_error(); 2344 pointer __old_p = __get_pointer(); 2345 size_type __cap = __old_cap < __ms / 2 - __alignment ? 2346 __recommend(std::max(__old_cap + __delta_cap, 2 * __old_cap)) : 2347 __ms - 1; 2348 auto __allocation = std::__allocate_at_least(__alloc(), __cap + 1); 2349 pointer __p = __allocation.ptr; 2350 __begin_lifetime(__p, __allocation.count); 2351 std::__debug_db_invalidate_all(this); 2352 if (__n_copy != 0) 2353 traits_type::copy(std::__to_address(__p), 2354 std::__to_address(__old_p), __n_copy); 2355 if (__n_add != 0) 2356 traits_type::copy(std::__to_address(__p) + __n_copy, __p_new_stuff, __n_add); 2357 size_type __sec_cp_sz = __old_sz - __n_del - __n_copy; 2358 if (__sec_cp_sz != 0) 2359 traits_type::copy(std::__to_address(__p) + __n_copy + __n_add, 2360 std::__to_address(__old_p) + __n_copy + __n_del, __sec_cp_sz); 2361 if (__old_cap+1 != __min_cap || __libcpp_is_constant_evaluated()) 2362 __alloc_traits::deallocate(__alloc(), __old_p, __old_cap+1); 2363 __set_long_pointer(__p); 2364 __set_long_cap(__allocation.count); 2365 __old_sz = __n_copy + __n_add + __sec_cp_sz; 2366 __set_long_size(__old_sz); 2367 traits_type::assign(__p[__old_sz], value_type()); 2368} 2369 2370template <class _CharT, class _Traits, class _Allocator> 2371void 2372_LIBCPP_CONSTEXPR_AFTER_CXX17 2373basic_string<_CharT, _Traits, _Allocator>::__grow_by(size_type __old_cap, size_type __delta_cap, size_type __old_sz, 2374 size_type __n_copy, size_type __n_del, size_type __n_add) 2375{ 2376 size_type __ms = max_size(); 2377 if (__delta_cap > __ms - __old_cap) 2378 __throw_length_error(); 2379 pointer __old_p = __get_pointer(); 2380 size_type __cap = __old_cap < __ms / 2 - __alignment ? 2381 __recommend(std::max(__old_cap + __delta_cap, 2 * __old_cap)) : 2382 __ms - 1; 2383 auto __allocation = std::__allocate_at_least(__alloc(), __cap + 1); 2384 pointer __p = __allocation.ptr; 2385 __begin_lifetime(__p, __allocation.count); 2386 std::__debug_db_invalidate_all(this); 2387 if (__n_copy != 0) 2388 traits_type::copy(std::__to_address(__p), 2389 std::__to_address(__old_p), __n_copy); 2390 size_type __sec_cp_sz = __old_sz - __n_del - __n_copy; 2391 if (__sec_cp_sz != 0) 2392 traits_type::copy(std::__to_address(__p) + __n_copy + __n_add, 2393 std::__to_address(__old_p) + __n_copy + __n_del, 2394 __sec_cp_sz); 2395 if (__libcpp_is_constant_evaluated() || __old_cap + 1 != __min_cap) 2396 __alloc_traits::deallocate(__alloc(), __old_p, __old_cap + 1); 2397 __set_long_pointer(__p); 2398 __set_long_cap(__allocation.count); 2399} 2400 2401// assign 2402 2403template <class _CharT, class _Traits, class _Allocator> 2404template <bool __is_short> 2405_LIBCPP_CONSTEXPR_AFTER_CXX17 2406basic_string<_CharT, _Traits, _Allocator>& 2407basic_string<_CharT, _Traits, _Allocator>::__assign_no_alias( 2408 const value_type* __s, size_type __n) { 2409 size_type __cap = __is_short ? static_cast<size_type>(__min_cap) : __get_long_cap(); 2410 if (__n < __cap) { 2411 pointer __p = __is_short ? __get_short_pointer() : __get_long_pointer(); 2412 __is_short ? __set_short_size(__n) : __set_long_size(__n); 2413 traits_type::copy(std::__to_address(__p), __s, __n); 2414 traits_type::assign(__p[__n], value_type()); 2415 __invalidate_iterators_past(__n); 2416 } else { 2417 size_type __sz = __is_short ? __get_short_size() : __get_long_size(); 2418 __grow_by_and_replace(__cap - 1, __n - __cap + 1, __sz, 0, __sz, __n, __s); 2419 } 2420 return *this; 2421} 2422 2423template <class _CharT, class _Traits, class _Allocator> 2424_LIBCPP_CONSTEXPR_AFTER_CXX17 2425basic_string<_CharT, _Traits, _Allocator>& 2426basic_string<_CharT, _Traits, _Allocator>::__assign_external( 2427 const value_type* __s, size_type __n) { 2428 size_type __cap = capacity(); 2429 if (__cap >= __n) { 2430 value_type* __p = std::__to_address(__get_pointer()); 2431 traits_type::move(__p, __s, __n); 2432 return __null_terminate_at(__p, __n); 2433 } else { 2434 size_type __sz = size(); 2435 __grow_by_and_replace(__cap, __n - __cap, __sz, 0, __sz, __n, __s); 2436 return *this; 2437 } 2438} 2439 2440template <class _CharT, class _Traits, class _Allocator> 2441_LIBCPP_CONSTEXPR_AFTER_CXX17 2442basic_string<_CharT, _Traits, _Allocator>& 2443basic_string<_CharT, _Traits, _Allocator>::assign(const value_type* __s, size_type __n) 2444{ 2445 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::assign received nullptr"); 2446 return (__builtin_constant_p(__n) && __fits_in_sso(__n)) 2447 ? __assign_short(__s, __n) 2448 : __assign_external(__s, __n); 2449} 2450 2451template <class _CharT, class _Traits, class _Allocator> 2452_LIBCPP_CONSTEXPR_AFTER_CXX17 2453basic_string<_CharT, _Traits, _Allocator>& 2454basic_string<_CharT, _Traits, _Allocator>::assign(size_type __n, value_type __c) 2455{ 2456 size_type __cap = capacity(); 2457 if (__cap < __n) 2458 { 2459 size_type __sz = size(); 2460 __grow_by(__cap, __n - __cap, __sz, 0, __sz); 2461 } 2462 value_type* __p = std::__to_address(__get_pointer()); 2463 traits_type::assign(__p, __n, __c); 2464 return __null_terminate_at(__p, __n); 2465} 2466 2467template <class _CharT, class _Traits, class _Allocator> 2468_LIBCPP_CONSTEXPR_AFTER_CXX17 2469basic_string<_CharT, _Traits, _Allocator>& 2470basic_string<_CharT, _Traits, _Allocator>::operator=(value_type __c) 2471{ 2472 pointer __p; 2473 if (__is_long()) 2474 { 2475 __p = __get_long_pointer(); 2476 __set_long_size(1); 2477 } 2478 else 2479 { 2480 __p = __get_short_pointer(); 2481 __set_short_size(1); 2482 } 2483 traits_type::assign(*__p, __c); 2484 traits_type::assign(*++__p, value_type()); 2485 __invalidate_iterators_past(1); 2486 return *this; 2487} 2488 2489template <class _CharT, class _Traits, class _Allocator> 2490_LIBCPP_CONSTEXPR_AFTER_CXX17 2491basic_string<_CharT, _Traits, _Allocator>& 2492basic_string<_CharT, _Traits, _Allocator>::operator=(const basic_string& __str) 2493{ 2494 if (this != &__str) { 2495 __copy_assign_alloc(__str); 2496 if (!__is_long()) { 2497 if (!__str.__is_long()) { 2498 __r_.first().__r = __str.__r_.first().__r; 2499 } else { 2500 return __assign_no_alias<true>(__str.data(), __str.size()); 2501 } 2502 } else { 2503 return __assign_no_alias<false>(__str.data(), __str.size()); 2504 } 2505 } 2506 return *this; 2507} 2508 2509#ifndef _LIBCPP_CXX03_LANG 2510 2511template <class _CharT, class _Traits, class _Allocator> 2512inline _LIBCPP_CONSTEXPR_AFTER_CXX17 2513void 2514basic_string<_CharT, _Traits, _Allocator>::__move_assign(basic_string& __str, false_type) 2515 _NOEXCEPT_(__alloc_traits::is_always_equal::value) 2516{ 2517 if (__alloc() != __str.__alloc()) 2518 assign(__str); 2519 else 2520 __move_assign(__str, true_type()); 2521} 2522 2523template <class _CharT, class _Traits, class _Allocator> 2524inline _LIBCPP_CONSTEXPR_AFTER_CXX17 2525void 2526basic_string<_CharT, _Traits, _Allocator>::__move_assign(basic_string& __str, true_type) 2527#if _LIBCPP_STD_VER > 14 2528 _NOEXCEPT 2529#else 2530 _NOEXCEPT_(is_nothrow_move_assignable<allocator_type>::value) 2531#endif 2532{ 2533 if (__is_long()) { 2534 __alloc_traits::deallocate(__alloc(), __get_long_pointer(), 2535 __get_long_cap()); 2536#if _LIBCPP_STD_VER <= 14 2537 if (!is_nothrow_move_assignable<allocator_type>::value) { 2538 __set_short_size(0); 2539 traits_type::assign(__get_short_pointer()[0], value_type()); 2540 } 2541#endif 2542 } 2543 __move_assign_alloc(__str); 2544 __r_.first() = __str.__r_.first(); 2545 if (__libcpp_is_constant_evaluated()) { 2546 __str.__default_init(); 2547 } else { 2548 __str.__set_short_size(0); 2549 traits_type::assign(__str.__get_short_pointer()[0], value_type()); 2550 } 2551} 2552 2553template <class _CharT, class _Traits, class _Allocator> 2554inline _LIBCPP_CONSTEXPR_AFTER_CXX17 2555basic_string<_CharT, _Traits, _Allocator>& 2556basic_string<_CharT, _Traits, _Allocator>::operator=(basic_string&& __str) 2557 _NOEXCEPT_((__noexcept_move_assign_container<_Allocator, __alloc_traits>::value)) 2558{ 2559 __move_assign(__str, integral_constant<bool, 2560 __alloc_traits::propagate_on_container_move_assignment::value>()); 2561 return *this; 2562} 2563 2564#endif 2565 2566template <class _CharT, class _Traits, class _Allocator> 2567template<class _InputIterator> 2568_LIBCPP_CONSTEXPR_AFTER_CXX17 2569__enable_if_t 2570< 2571 __is_exactly_cpp17_input_iterator<_InputIterator>::value, 2572 basic_string<_CharT, _Traits, _Allocator>& 2573> 2574basic_string<_CharT, _Traits, _Allocator>::assign(_InputIterator __first, _InputIterator __last) 2575{ 2576 const basic_string __temp(__first, __last, __alloc()); 2577 assign(__temp.data(), __temp.size()); 2578 return *this; 2579} 2580 2581template <class _CharT, class _Traits, class _Allocator> 2582template<class _ForwardIterator> 2583_LIBCPP_CONSTEXPR_AFTER_CXX17 2584__enable_if_t 2585< 2586 __is_cpp17_forward_iterator<_ForwardIterator>::value, 2587 basic_string<_CharT, _Traits, _Allocator>& 2588> 2589basic_string<_CharT, _Traits, _Allocator>::assign(_ForwardIterator __first, _ForwardIterator __last) 2590{ 2591 size_type __cap = capacity(); 2592 size_type __n = __string_is_trivial_iterator<_ForwardIterator>::value ? 2593 static_cast<size_type>(std::distance(__first, __last)) : 0; 2594 2595 if (__string_is_trivial_iterator<_ForwardIterator>::value && 2596 (__cap >= __n || !__addr_in_range(*__first))) 2597 { 2598 if (__cap < __n) 2599 { 2600 size_type __sz = size(); 2601 __grow_by(__cap, __n - __cap, __sz, 0, __sz); 2602 } 2603 pointer __p = __get_pointer(); 2604 for (; __first != __last; ++__p, (void) ++__first) 2605 traits_type::assign(*__p, *__first); 2606 traits_type::assign(*__p, value_type()); 2607 __set_size(__n); 2608 __invalidate_iterators_past(__n); 2609 } 2610 else 2611 { 2612 const basic_string __temp(__first, __last, __alloc()); 2613 assign(__temp.data(), __temp.size()); 2614 } 2615 return *this; 2616} 2617 2618template <class _CharT, class _Traits, class _Allocator> 2619_LIBCPP_CONSTEXPR_AFTER_CXX17 2620basic_string<_CharT, _Traits, _Allocator>& 2621basic_string<_CharT, _Traits, _Allocator>::assign(const basic_string& __str, size_type __pos, size_type __n) 2622{ 2623 size_type __sz = __str.size(); 2624 if (__pos > __sz) 2625 __throw_out_of_range(); 2626 return assign(__str.data() + __pos, std::min(__n, __sz - __pos)); 2627} 2628 2629template <class _CharT, class _Traits, class _Allocator> 2630template <class _Tp> 2631_LIBCPP_CONSTEXPR_AFTER_CXX17 2632__enable_if_t 2633< 2634 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value 2635 && !__is_same_uncvref<_Tp, basic_string<_CharT, _Traits, _Allocator> >::value, 2636 basic_string<_CharT, _Traits, _Allocator>& 2637> 2638basic_string<_CharT, _Traits, _Allocator>::assign(const _Tp & __t, size_type __pos, size_type __n) 2639{ 2640 __self_view __sv = __t; 2641 size_type __sz = __sv.size(); 2642 if (__pos > __sz) 2643 __throw_out_of_range(); 2644 return assign(__sv.data() + __pos, std::min(__n, __sz - __pos)); 2645} 2646 2647 2648template <class _CharT, class _Traits, class _Allocator> 2649_LIBCPP_CONSTEXPR_AFTER_CXX17 2650basic_string<_CharT, _Traits, _Allocator>& 2651basic_string<_CharT, _Traits, _Allocator>::__assign_external(const value_type* __s) { 2652 return __assign_external(__s, traits_type::length(__s)); 2653} 2654 2655template <class _CharT, class _Traits, class _Allocator> 2656_LIBCPP_CONSTEXPR_AFTER_CXX17 2657basic_string<_CharT, _Traits, _Allocator>& 2658basic_string<_CharT, _Traits, _Allocator>::assign(const value_type* __s) 2659{ 2660 _LIBCPP_ASSERT(__s != nullptr, "string::assign received nullptr"); 2661 return __builtin_constant_p(*__s) 2662 ? (__fits_in_sso(traits_type::length(__s)) 2663 ? __assign_short(__s, traits_type::length(__s)) 2664 : __assign_external(__s, traits_type::length(__s))) 2665 : __assign_external(__s); 2666} 2667// append 2668 2669template <class _CharT, class _Traits, class _Allocator> 2670_LIBCPP_CONSTEXPR_AFTER_CXX17 2671basic_string<_CharT, _Traits, _Allocator>& 2672basic_string<_CharT, _Traits, _Allocator>::append(const value_type* __s, size_type __n) 2673{ 2674 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::append received nullptr"); 2675 size_type __cap = capacity(); 2676 size_type __sz = size(); 2677 if (__cap - __sz >= __n) 2678 { 2679 if (__n) 2680 { 2681 value_type* __p = std::__to_address(__get_pointer()); 2682 traits_type::copy(__p + __sz, __s, __n); 2683 __sz += __n; 2684 __set_size(__sz); 2685 traits_type::assign(__p[__sz], value_type()); 2686 } 2687 } 2688 else 2689 __grow_by_and_replace(__cap, __sz + __n - __cap, __sz, __sz, 0, __n, __s); 2690 return *this; 2691} 2692 2693template <class _CharT, class _Traits, class _Allocator> 2694_LIBCPP_CONSTEXPR_AFTER_CXX17 2695basic_string<_CharT, _Traits, _Allocator>& 2696basic_string<_CharT, _Traits, _Allocator>::append(size_type __n, value_type __c) 2697{ 2698 if (__n) 2699 { 2700 size_type __cap = capacity(); 2701 size_type __sz = size(); 2702 if (__cap - __sz < __n) 2703 __grow_by(__cap, __sz + __n - __cap, __sz, __sz, 0); 2704 pointer __p = __get_pointer(); 2705 traits_type::assign(std::__to_address(__p) + __sz, __n, __c); 2706 __sz += __n; 2707 __set_size(__sz); 2708 traits_type::assign(__p[__sz], value_type()); 2709 } 2710 return *this; 2711} 2712 2713template <class _CharT, class _Traits, class _Allocator> 2714_LIBCPP_CONSTEXPR_AFTER_CXX17 inline void 2715basic_string<_CharT, _Traits, _Allocator>::__append_default_init(size_type __n) 2716{ 2717 if (__n) 2718 { 2719 size_type __cap = capacity(); 2720 size_type __sz = size(); 2721 if (__cap - __sz < __n) 2722 __grow_by(__cap, __sz + __n - __cap, __sz, __sz, 0); 2723 pointer __p = __get_pointer(); 2724 __sz += __n; 2725 __set_size(__sz); 2726 traits_type::assign(__p[__sz], value_type()); 2727 } 2728} 2729 2730template <class _CharT, class _Traits, class _Allocator> 2731_LIBCPP_CONSTEXPR_AFTER_CXX17 2732void 2733basic_string<_CharT, _Traits, _Allocator>::push_back(value_type __c) 2734{ 2735 bool __is_short = !__is_long(); 2736 size_type __cap; 2737 size_type __sz; 2738 if (__is_short) 2739 { 2740 __cap = __min_cap - 1; 2741 __sz = __get_short_size(); 2742 } 2743 else 2744 { 2745 __cap = __get_long_cap() - 1; 2746 __sz = __get_long_size(); 2747 } 2748 if (__sz == __cap) 2749 { 2750 __grow_by(__cap, 1, __sz, __sz, 0); 2751 __is_short = false; // the string is always long after __grow_by 2752 } 2753 pointer __p = __get_pointer(); 2754 if (__is_short) 2755 { 2756 __p = __get_short_pointer() + __sz; 2757 __set_short_size(__sz+1); 2758 } 2759 else 2760 { 2761 __p = __get_long_pointer() + __sz; 2762 __set_long_size(__sz+1); 2763 } 2764 traits_type::assign(*__p, __c); 2765 traits_type::assign(*++__p, value_type()); 2766} 2767 2768template <class _CharT, class _Traits, class _Allocator> 2769template<class _ForwardIterator> 2770_LIBCPP_CONSTEXPR_AFTER_CXX17 2771__enable_if_t 2772< 2773 __is_cpp17_forward_iterator<_ForwardIterator>::value, 2774 basic_string<_CharT, _Traits, _Allocator>& 2775> 2776basic_string<_CharT, _Traits, _Allocator>::append( 2777 _ForwardIterator __first, _ForwardIterator __last) 2778{ 2779 size_type __sz = size(); 2780 size_type __cap = capacity(); 2781 size_type __n = static_cast<size_type>(std::distance(__first, __last)); 2782 if (__n) 2783 { 2784 if (__string_is_trivial_iterator<_ForwardIterator>::value && 2785 !__addr_in_range(*__first)) 2786 { 2787 if (__cap - __sz < __n) 2788 __grow_by(__cap, __sz + __n - __cap, __sz, __sz, 0); 2789 pointer __p = __get_pointer() + __sz; 2790 for (; __first != __last; ++__p, (void) ++__first) 2791 traits_type::assign(*__p, *__first); 2792 traits_type::assign(*__p, value_type()); 2793 __set_size(__sz + __n); 2794 } 2795 else 2796 { 2797 const basic_string __temp(__first, __last, __alloc()); 2798 append(__temp.data(), __temp.size()); 2799 } 2800 } 2801 return *this; 2802} 2803 2804template <class _CharT, class _Traits, class _Allocator> 2805inline _LIBCPP_CONSTEXPR_AFTER_CXX17 2806basic_string<_CharT, _Traits, _Allocator>& 2807basic_string<_CharT, _Traits, _Allocator>::append(const basic_string& __str) 2808{ 2809 return append(__str.data(), __str.size()); 2810} 2811 2812template <class _CharT, class _Traits, class _Allocator> 2813_LIBCPP_CONSTEXPR_AFTER_CXX17 2814basic_string<_CharT, _Traits, _Allocator>& 2815basic_string<_CharT, _Traits, _Allocator>::append(const basic_string& __str, size_type __pos, size_type __n) 2816{ 2817 size_type __sz = __str.size(); 2818 if (__pos > __sz) 2819 __throw_out_of_range(); 2820 return append(__str.data() + __pos, std::min(__n, __sz - __pos)); 2821} 2822 2823template <class _CharT, class _Traits, class _Allocator> 2824template <class _Tp> 2825_LIBCPP_CONSTEXPR_AFTER_CXX17 2826 __enable_if_t 2827 < 2828 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value && !__is_same_uncvref<_Tp, basic_string<_CharT, _Traits, _Allocator> >::value, 2829 basic_string<_CharT, _Traits, _Allocator>& 2830 > 2831basic_string<_CharT, _Traits, _Allocator>::append(const _Tp & __t, size_type __pos, size_type __n) 2832{ 2833 __self_view __sv = __t; 2834 size_type __sz = __sv.size(); 2835 if (__pos > __sz) 2836 __throw_out_of_range(); 2837 return append(__sv.data() + __pos, std::min(__n, __sz - __pos)); 2838} 2839 2840template <class _CharT, class _Traits, class _Allocator> 2841_LIBCPP_CONSTEXPR_AFTER_CXX17 2842basic_string<_CharT, _Traits, _Allocator>& 2843basic_string<_CharT, _Traits, _Allocator>::append(const value_type* __s) 2844{ 2845 _LIBCPP_ASSERT(__s != nullptr, "string::append received nullptr"); 2846 return append(__s, traits_type::length(__s)); 2847} 2848 2849// insert 2850 2851template <class _CharT, class _Traits, class _Allocator> 2852_LIBCPP_CONSTEXPR_AFTER_CXX17 2853basic_string<_CharT, _Traits, _Allocator>& 2854basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos, const value_type* __s, size_type __n) 2855{ 2856 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::insert received nullptr"); 2857 size_type __sz = size(); 2858 if (__pos > __sz) 2859 __throw_out_of_range(); 2860 size_type __cap = capacity(); 2861 if (__libcpp_is_constant_evaluated()) { 2862 if (__cap - __sz >= __n) 2863 __grow_by_and_replace(__cap, 0, __sz, __pos, 0, __n, __s); 2864 else 2865 __grow_by_and_replace(__cap, __sz + __n - __cap, __sz, __pos, 0, __n, __s); 2866 return *this; 2867 } 2868 if (__cap - __sz >= __n) 2869 { 2870 if (__n) 2871 { 2872 value_type* __p = std::__to_address(__get_pointer()); 2873 size_type __n_move = __sz - __pos; 2874 if (__n_move != 0) 2875 { 2876 if (__p + __pos <= __s && __s < __p + __sz) 2877 __s += __n; 2878 traits_type::move(__p + __pos + __n, __p + __pos, __n_move); 2879 } 2880 traits_type::move(__p + __pos, __s, __n); 2881 __sz += __n; 2882 __set_size(__sz); 2883 traits_type::assign(__p[__sz], value_type()); 2884 } 2885 } 2886 else 2887 __grow_by_and_replace(__cap, __sz + __n - __cap, __sz, __pos, 0, __n, __s); 2888 return *this; 2889} 2890 2891template <class _CharT, class _Traits, class _Allocator> 2892_LIBCPP_CONSTEXPR_AFTER_CXX17 2893basic_string<_CharT, _Traits, _Allocator>& 2894basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos, size_type __n, value_type __c) 2895{ 2896 size_type __sz = size(); 2897 if (__pos > __sz) 2898 __throw_out_of_range(); 2899 if (__n) 2900 { 2901 size_type __cap = capacity(); 2902 value_type* __p; 2903 if (__cap - __sz >= __n) 2904 { 2905 __p = std::__to_address(__get_pointer()); 2906 size_type __n_move = __sz - __pos; 2907 if (__n_move != 0) 2908 traits_type::move(__p + __pos + __n, __p + __pos, __n_move); 2909 } 2910 else 2911 { 2912 __grow_by(__cap, __sz + __n - __cap, __sz, __pos, 0, __n); 2913 __p = std::__to_address(__get_long_pointer()); 2914 } 2915 traits_type::assign(__p + __pos, __n, __c); 2916 __sz += __n; 2917 __set_size(__sz); 2918 traits_type::assign(__p[__sz], value_type()); 2919 } 2920 return *this; 2921} 2922 2923template <class _CharT, class _Traits, class _Allocator> 2924template<class _InputIterator> 2925_LIBCPP_CONSTEXPR_AFTER_CXX17 2926__enable_if_t 2927< 2928 __is_exactly_cpp17_input_iterator<_InputIterator>::value, 2929 typename basic_string<_CharT, _Traits, _Allocator>::iterator 2930> 2931basic_string<_CharT, _Traits, _Allocator>::insert(const_iterator __pos, _InputIterator __first, _InputIterator __last) 2932{ 2933 _LIBCPP_DEBUG_ASSERT(__get_const_db()->__find_c_from_i(&__pos) == this, 2934 "string::insert(iterator, range) called with an iterator not" 2935 " referring to this string"); 2936 const basic_string __temp(__first, __last, __alloc()); 2937 return insert(__pos, __temp.data(), __temp.data() + __temp.size()); 2938} 2939 2940template <class _CharT, class _Traits, class _Allocator> 2941template<class _ForwardIterator> 2942_LIBCPP_CONSTEXPR_AFTER_CXX17 2943__enable_if_t 2944< 2945 __is_cpp17_forward_iterator<_ForwardIterator>::value, 2946 typename basic_string<_CharT, _Traits, _Allocator>::iterator 2947> 2948basic_string<_CharT, _Traits, _Allocator>::insert(const_iterator __pos, _ForwardIterator __first, _ForwardIterator __last) 2949{ 2950 _LIBCPP_DEBUG_ASSERT(__get_const_db()->__find_c_from_i(&__pos) == this, 2951 "string::insert(iterator, range) called with an iterator not referring to this string"); 2952 2953 size_type __ip = static_cast<size_type>(__pos - begin()); 2954 size_type __n = static_cast<size_type>(std::distance(__first, __last)); 2955 if (__n == 0) 2956 return begin() + __ip; 2957 2958 if (__string_is_trivial_iterator<_ForwardIterator>::value && !__addr_in_range(*__first)) 2959 { 2960 return __insert_from_safe_copy(__n, __ip, __first, __last); 2961 } 2962 else 2963 { 2964 const basic_string __temp(__first, __last, __alloc()); 2965 return __insert_from_safe_copy(__n, __ip, __temp.begin(), __temp.end()); 2966 } 2967} 2968 2969template <class _CharT, class _Traits, class _Allocator> 2970inline _LIBCPP_CONSTEXPR_AFTER_CXX17 2971basic_string<_CharT, _Traits, _Allocator>& 2972basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos1, const basic_string& __str) 2973{ 2974 return insert(__pos1, __str.data(), __str.size()); 2975} 2976 2977template <class _CharT, class _Traits, class _Allocator> 2978_LIBCPP_CONSTEXPR_AFTER_CXX17 2979basic_string<_CharT, _Traits, _Allocator>& 2980basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos1, const basic_string& __str, 2981 size_type __pos2, size_type __n) 2982{ 2983 size_type __str_sz = __str.size(); 2984 if (__pos2 > __str_sz) 2985 __throw_out_of_range(); 2986 return insert(__pos1, __str.data() + __pos2, std::min(__n, __str_sz - __pos2)); 2987} 2988 2989template <class _CharT, class _Traits, class _Allocator> 2990template <class _Tp> 2991_LIBCPP_CONSTEXPR_AFTER_CXX17 2992__enable_if_t 2993< 2994 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value && !__is_same_uncvref<_Tp, basic_string<_CharT, _Traits, _Allocator> >::value, 2995 basic_string<_CharT, _Traits, _Allocator>& 2996> 2997basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos1, const _Tp& __t, 2998 size_type __pos2, size_type __n) 2999{ 3000 __self_view __sv = __t; 3001 size_type __str_sz = __sv.size(); 3002 if (__pos2 > __str_sz) 3003 __throw_out_of_range(); 3004 return insert(__pos1, __sv.data() + __pos2, std::min(__n, __str_sz - __pos2)); 3005} 3006 3007template <class _CharT, class _Traits, class _Allocator> 3008_LIBCPP_CONSTEXPR_AFTER_CXX17 3009basic_string<_CharT, _Traits, _Allocator>& 3010basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos, const value_type* __s) 3011{ 3012 _LIBCPP_ASSERT(__s != nullptr, "string::insert received nullptr"); 3013 return insert(__pos, __s, traits_type::length(__s)); 3014} 3015 3016template <class _CharT, class _Traits, class _Allocator> 3017_LIBCPP_CONSTEXPR_AFTER_CXX17 3018typename basic_string<_CharT, _Traits, _Allocator>::iterator 3019basic_string<_CharT, _Traits, _Allocator>::insert(const_iterator __pos, value_type __c) 3020{ 3021 _LIBCPP_DEBUG_ASSERT(__get_const_db()->__find_c_from_i(&__pos) == this, 3022 "string::insert(iterator, character) called with an iterator not" 3023 " referring to this string"); 3024 3025 size_type __ip = static_cast<size_type>(__pos - begin()); 3026 size_type __sz = size(); 3027 size_type __cap = capacity(); 3028 value_type* __p; 3029 if (__cap == __sz) 3030 { 3031 __grow_by(__cap, 1, __sz, __ip, 0, 1); 3032 __p = std::__to_address(__get_long_pointer()); 3033 } 3034 else 3035 { 3036 __p = std::__to_address(__get_pointer()); 3037 size_type __n_move = __sz - __ip; 3038 if (__n_move != 0) 3039 traits_type::move(__p + __ip + 1, __p + __ip, __n_move); 3040 } 3041 traits_type::assign(__p[__ip], __c); 3042 traits_type::assign(__p[++__sz], value_type()); 3043 __set_size(__sz); 3044 return begin() + static_cast<difference_type>(__ip); 3045} 3046 3047template <class _CharT, class _Traits, class _Allocator> 3048inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3049typename basic_string<_CharT, _Traits, _Allocator>::iterator 3050basic_string<_CharT, _Traits, _Allocator>::insert(const_iterator __pos, size_type __n, value_type __c) 3051{ 3052 _LIBCPP_DEBUG_ASSERT(__get_const_db()->__find_c_from_i(&__pos) == this, 3053 "string::insert(iterator, n, value) called with an iterator not" 3054 " referring to this string"); 3055 difference_type __p = __pos - begin(); 3056 insert(static_cast<size_type>(__p), __n, __c); 3057 return begin() + __p; 3058} 3059 3060// replace 3061 3062template <class _CharT, class _Traits, class _Allocator> 3063_LIBCPP_CONSTEXPR_AFTER_CXX17 3064basic_string<_CharT, _Traits, _Allocator>& 3065basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos, size_type __n1, const value_type* __s, size_type __n2) 3066 _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK 3067{ 3068 _LIBCPP_ASSERT(__n2 == 0 || __s != nullptr, "string::replace received nullptr"); 3069 size_type __sz = size(); 3070 if (__pos > __sz) 3071 __throw_out_of_range(); 3072 __n1 = std::min(__n1, __sz - __pos); 3073 size_type __cap = capacity(); 3074 if (__cap - __sz + __n1 >= __n2) 3075 { 3076 if (__libcpp_is_constant_evaluated()) { 3077 __grow_by_and_replace(__cap, 0, __sz, __pos, __n1, __n2, __s); 3078 return *this; 3079 } 3080 value_type* __p = std::__to_address(__get_pointer()); 3081 if (__n1 != __n2) 3082 { 3083 size_type __n_move = __sz - __pos - __n1; 3084 if (__n_move != 0) 3085 { 3086 if (__n1 > __n2) 3087 { 3088 traits_type::move(__p + __pos, __s, __n2); 3089 traits_type::move(__p + __pos + __n2, __p + __pos + __n1, __n_move); 3090 return __null_terminate_at(__p, __sz + (__n2 - __n1)); 3091 } 3092 if (__p + __pos < __s && __s < __p + __sz) 3093 { 3094 if (__p + __pos + __n1 <= __s) 3095 __s += __n2 - __n1; 3096 else // __p + __pos < __s < __p + __pos + __n1 3097 { 3098 traits_type::move(__p + __pos, __s, __n1); 3099 __pos += __n1; 3100 __s += __n2; 3101 __n2 -= __n1; 3102 __n1 = 0; 3103 } 3104 } 3105 traits_type::move(__p + __pos + __n2, __p + __pos + __n1, __n_move); 3106 } 3107 } 3108 traits_type::move(__p + __pos, __s, __n2); 3109 return __null_terminate_at(__p, __sz + (__n2 - __n1)); 3110 } 3111 else 3112 __grow_by_and_replace(__cap, __sz - __n1 + __n2 - __cap, __sz, __pos, __n1, __n2, __s); 3113 return *this; 3114} 3115 3116template <class _CharT, class _Traits, class _Allocator> 3117_LIBCPP_CONSTEXPR_AFTER_CXX17 3118basic_string<_CharT, _Traits, _Allocator>& 3119basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos, size_type __n1, size_type __n2, value_type __c) 3120{ 3121 size_type __sz = size(); 3122 if (__pos > __sz) 3123 __throw_out_of_range(); 3124 __n1 = std::min(__n1, __sz - __pos); 3125 size_type __cap = capacity(); 3126 value_type* __p; 3127 if (__cap - __sz + __n1 >= __n2) 3128 { 3129 __p = std::__to_address(__get_pointer()); 3130 if (__n1 != __n2) 3131 { 3132 size_type __n_move = __sz - __pos - __n1; 3133 if (__n_move != 0) 3134 traits_type::move(__p + __pos + __n2, __p + __pos + __n1, __n_move); 3135 } 3136 } 3137 else 3138 { 3139 __grow_by(__cap, __sz - __n1 + __n2 - __cap, __sz, __pos, __n1, __n2); 3140 __p = std::__to_address(__get_long_pointer()); 3141 } 3142 traits_type::assign(__p + __pos, __n2, __c); 3143 return __null_terminate_at(__p, __sz - (__n1 - __n2)); 3144} 3145 3146template <class _CharT, class _Traits, class _Allocator> 3147template<class _InputIterator> 3148_LIBCPP_CONSTEXPR_AFTER_CXX17 3149__enable_if_t 3150< 3151 __is_cpp17_input_iterator<_InputIterator>::value, 3152 basic_string<_CharT, _Traits, _Allocator>& 3153> 3154basic_string<_CharT, _Traits, _Allocator>::replace(const_iterator __i1, const_iterator __i2, 3155 _InputIterator __j1, _InputIterator __j2) 3156{ 3157 const basic_string __temp(__j1, __j2, __alloc()); 3158 return replace(__i1, __i2, __temp); 3159} 3160 3161template <class _CharT, class _Traits, class _Allocator> 3162inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3163basic_string<_CharT, _Traits, _Allocator>& 3164basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos1, size_type __n1, const basic_string& __str) 3165{ 3166 return replace(__pos1, __n1, __str.data(), __str.size()); 3167} 3168 3169template <class _CharT, class _Traits, class _Allocator> 3170_LIBCPP_CONSTEXPR_AFTER_CXX17 3171basic_string<_CharT, _Traits, _Allocator>& 3172basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos1, size_type __n1, const basic_string& __str, 3173 size_type __pos2, size_type __n2) 3174{ 3175 size_type __str_sz = __str.size(); 3176 if (__pos2 > __str_sz) 3177 __throw_out_of_range(); 3178 return replace(__pos1, __n1, __str.data() + __pos2, std::min(__n2, __str_sz - __pos2)); 3179} 3180 3181template <class _CharT, class _Traits, class _Allocator> 3182template <class _Tp> 3183_LIBCPP_CONSTEXPR_AFTER_CXX17 3184__enable_if_t 3185< 3186 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value && !__is_same_uncvref<_Tp, basic_string<_CharT, _Traits, _Allocator> >::value, 3187 basic_string<_CharT, _Traits, _Allocator>& 3188> 3189basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos1, size_type __n1, const _Tp& __t, 3190 size_type __pos2, size_type __n2) 3191{ 3192 __self_view __sv = __t; 3193 size_type __str_sz = __sv.size(); 3194 if (__pos2 > __str_sz) 3195 __throw_out_of_range(); 3196 return replace(__pos1, __n1, __sv.data() + __pos2, std::min(__n2, __str_sz - __pos2)); 3197} 3198 3199template <class _CharT, class _Traits, class _Allocator> 3200_LIBCPP_CONSTEXPR_AFTER_CXX17 3201basic_string<_CharT, _Traits, _Allocator>& 3202basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos, size_type __n1, const value_type* __s) 3203{ 3204 _LIBCPP_ASSERT(__s != nullptr, "string::replace received nullptr"); 3205 return replace(__pos, __n1, __s, traits_type::length(__s)); 3206} 3207 3208template <class _CharT, class _Traits, class _Allocator> 3209inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3210basic_string<_CharT, _Traits, _Allocator>& 3211basic_string<_CharT, _Traits, _Allocator>::replace(const_iterator __i1, const_iterator __i2, const basic_string& __str) 3212{ 3213 return replace(static_cast<size_type>(__i1 - begin()), static_cast<size_type>(__i2 - __i1), 3214 __str.data(), __str.size()); 3215} 3216 3217template <class _CharT, class _Traits, class _Allocator> 3218inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3219basic_string<_CharT, _Traits, _Allocator>& 3220basic_string<_CharT, _Traits, _Allocator>::replace(const_iterator __i1, const_iterator __i2, const value_type* __s, size_type __n) 3221{ 3222 return replace(static_cast<size_type>(__i1 - begin()), static_cast<size_type>(__i2 - __i1), __s, __n); 3223} 3224 3225template <class _CharT, class _Traits, class _Allocator> 3226inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3227basic_string<_CharT, _Traits, _Allocator>& 3228basic_string<_CharT, _Traits, _Allocator>::replace(const_iterator __i1, const_iterator __i2, const value_type* __s) 3229{ 3230 return replace(static_cast<size_type>(__i1 - begin()), static_cast<size_type>(__i2 - __i1), __s); 3231} 3232 3233template <class _CharT, class _Traits, class _Allocator> 3234inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3235basic_string<_CharT, _Traits, _Allocator>& 3236basic_string<_CharT, _Traits, _Allocator>::replace(const_iterator __i1, const_iterator __i2, size_type __n, value_type __c) 3237{ 3238 return replace(static_cast<size_type>(__i1 - begin()), static_cast<size_type>(__i2 - __i1), __n, __c); 3239} 3240 3241// erase 3242 3243// 'externally instantiated' erase() implementation, called when __n != npos. 3244// Does not check __pos against size() 3245template <class _CharT, class _Traits, class _Allocator> 3246_LIBCPP_CONSTEXPR_AFTER_CXX17 3247void 3248basic_string<_CharT, _Traits, _Allocator>::__erase_external_with_move( 3249 size_type __pos, size_type __n) 3250{ 3251 if (__n) 3252 { 3253 size_type __sz = size(); 3254 value_type* __p = std::__to_address(__get_pointer()); 3255 __n = std::min(__n, __sz - __pos); 3256 size_type __n_move = __sz - __pos - __n; 3257 if (__n_move != 0) 3258 traits_type::move(__p + __pos, __p + __pos + __n, __n_move); 3259 __null_terminate_at(__p, __sz - __n); 3260 } 3261} 3262 3263template <class _CharT, class _Traits, class _Allocator> 3264_LIBCPP_CONSTEXPR_AFTER_CXX17 3265basic_string<_CharT, _Traits, _Allocator>& 3266basic_string<_CharT, _Traits, _Allocator>::erase(size_type __pos, 3267 size_type __n) { 3268 if (__pos > size()) 3269 __throw_out_of_range(); 3270 if (__n == npos) { 3271 __erase_to_end(__pos); 3272 } else { 3273 __erase_external_with_move(__pos, __n); 3274 } 3275 return *this; 3276} 3277 3278template <class _CharT, class _Traits, class _Allocator> 3279inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3280typename basic_string<_CharT, _Traits, _Allocator>::iterator 3281basic_string<_CharT, _Traits, _Allocator>::erase(const_iterator __pos) 3282{ 3283 _LIBCPP_DEBUG_ASSERT(__get_const_db()->__find_c_from_i(&__pos) == this, 3284 "string::erase(iterator) called with an iterator not" 3285 " referring to this string"); 3286 3287 _LIBCPP_ASSERT(__pos != end(), "string::erase(iterator) called with a non-dereferenceable iterator"); 3288 iterator __b = begin(); 3289 size_type __r = static_cast<size_type>(__pos - __b); 3290 erase(__r, 1); 3291 return __b + static_cast<difference_type>(__r); 3292} 3293 3294template <class _CharT, class _Traits, class _Allocator> 3295inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3296typename basic_string<_CharT, _Traits, _Allocator>::iterator 3297basic_string<_CharT, _Traits, _Allocator>::erase(const_iterator __first, const_iterator __last) 3298{ 3299 _LIBCPP_DEBUG_ASSERT(__get_const_db()->__find_c_from_i(&__first) == this, 3300 "string::erase(iterator, iterator) called with an iterator not" 3301 " referring to this string"); 3302 3303 _LIBCPP_ASSERT(__first <= __last, "string::erase(first, last) called with invalid range"); 3304 iterator __b = begin(); 3305 size_type __r = static_cast<size_type>(__first - __b); 3306 erase(__r, static_cast<size_type>(__last - __first)); 3307 return __b + static_cast<difference_type>(__r); 3308} 3309 3310template <class _CharT, class _Traits, class _Allocator> 3311inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3312void 3313basic_string<_CharT, _Traits, _Allocator>::pop_back() 3314{ 3315 _LIBCPP_ASSERT(!empty(), "string::pop_back(): string is already empty"); 3316 __erase_to_end(size() - 1); 3317} 3318 3319template <class _CharT, class _Traits, class _Allocator> 3320inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3321void 3322basic_string<_CharT, _Traits, _Allocator>::clear() _NOEXCEPT 3323{ 3324 std::__debug_db_invalidate_all(this); 3325 if (__is_long()) 3326 { 3327 traits_type::assign(*__get_long_pointer(), value_type()); 3328 __set_long_size(0); 3329 } 3330 else 3331 { 3332 traits_type::assign(*__get_short_pointer(), value_type()); 3333 __set_short_size(0); 3334 } 3335} 3336 3337template <class _CharT, class _Traits, class _Allocator> 3338inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3339void 3340basic_string<_CharT, _Traits, _Allocator>::__erase_to_end(size_type __pos) 3341{ 3342 __null_terminate_at(std::__to_address(__get_pointer()), __pos); 3343} 3344 3345template <class _CharT, class _Traits, class _Allocator> 3346_LIBCPP_CONSTEXPR_AFTER_CXX17 3347void 3348basic_string<_CharT, _Traits, _Allocator>::resize(size_type __n, value_type __c) 3349{ 3350 size_type __sz = size(); 3351 if (__n > __sz) 3352 append(__n - __sz, __c); 3353 else 3354 __erase_to_end(__n); 3355} 3356 3357template <class _CharT, class _Traits, class _Allocator> 3358_LIBCPP_CONSTEXPR_AFTER_CXX17 inline void 3359basic_string<_CharT, _Traits, _Allocator>::__resize_default_init(size_type __n) 3360{ 3361 size_type __sz = size(); 3362 if (__n > __sz) { 3363 __append_default_init(__n - __sz); 3364 } else 3365 __erase_to_end(__n); 3366} 3367 3368template <class _CharT, class _Traits, class _Allocator> 3369inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3370typename basic_string<_CharT, _Traits, _Allocator>::size_type 3371basic_string<_CharT, _Traits, _Allocator>::max_size() const _NOEXCEPT 3372{ 3373 size_type __m = __alloc_traits::max_size(__alloc()); 3374 if (__m <= std::numeric_limits<size_type>::max() / 2) { 3375 return __m - __alignment; 3376 } else { 3377 bool __uses_lsb = __endian_factor == 2; 3378 return __uses_lsb ? __m - __alignment : (__m / 2) - __alignment; 3379 } 3380} 3381 3382template <class _CharT, class _Traits, class _Allocator> 3383_LIBCPP_CONSTEXPR_AFTER_CXX17 3384void 3385basic_string<_CharT, _Traits, _Allocator>::reserve(size_type __requested_capacity) 3386{ 3387 if (__requested_capacity > max_size()) 3388 __throw_length_error(); 3389 3390 // Make sure reserve(n) never shrinks. This is technically only required in C++20 3391 // and later (since P0966R1), however we provide consistent behavior in all Standard 3392 // modes because this function is instantiated in the shared library. 3393 if (__requested_capacity <= capacity()) 3394 return; 3395 3396 size_type __target_capacity = std::max(__requested_capacity, size()); 3397 __target_capacity = __recommend(__target_capacity); 3398 if (__target_capacity == capacity()) return; 3399 3400 __shrink_or_extend(__target_capacity); 3401} 3402 3403template <class _CharT, class _Traits, class _Allocator> 3404inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3405void 3406basic_string<_CharT, _Traits, _Allocator>::shrink_to_fit() _NOEXCEPT 3407{ 3408 size_type __target_capacity = __recommend(size()); 3409 if (__target_capacity == capacity()) return; 3410 3411 __shrink_or_extend(__target_capacity); 3412} 3413 3414template <class _CharT, class _Traits, class _Allocator> 3415inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3416void 3417basic_string<_CharT, _Traits, _Allocator>::__shrink_or_extend(size_type __target_capacity) 3418{ 3419 size_type __cap = capacity(); 3420 size_type __sz = size(); 3421 3422 pointer __new_data, __p; 3423 bool __was_long, __now_long; 3424 if (__fits_in_sso(__target_capacity)) 3425 { 3426 __was_long = true; 3427 __now_long = false; 3428 __new_data = __get_short_pointer(); 3429 __p = __get_long_pointer(); 3430 } 3431 else 3432 { 3433 if (__target_capacity > __cap) { 3434 auto __allocation = std::__allocate_at_least(__alloc(), __target_capacity + 1); 3435 __new_data = __allocation.ptr; 3436 __target_capacity = __allocation.count - 1; 3437 } 3438 else 3439 { 3440 #ifndef _LIBCPP_NO_EXCEPTIONS 3441 try 3442 { 3443 #endif // _LIBCPP_NO_EXCEPTIONS 3444 auto __allocation = std::__allocate_at_least(__alloc(), __target_capacity + 1); 3445 __new_data = __allocation.ptr; 3446 __target_capacity = __allocation.count - 1; 3447 #ifndef _LIBCPP_NO_EXCEPTIONS 3448 } 3449 catch (...) 3450 { 3451 return; 3452 } 3453 #else // _LIBCPP_NO_EXCEPTIONS 3454 if (__new_data == nullptr) 3455 return; 3456 #endif // _LIBCPP_NO_EXCEPTIONS 3457 } 3458 __begin_lifetime(__new_data, __target_capacity + 1); 3459 __now_long = true; 3460 __was_long = __is_long(); 3461 __p = __get_pointer(); 3462 } 3463 traits_type::copy(std::__to_address(__new_data), 3464 std::__to_address(__p), size()+1); 3465 if (__was_long) 3466 __alloc_traits::deallocate(__alloc(), __p, __cap+1); 3467 if (__now_long) 3468 { 3469 __set_long_cap(__target_capacity+1); 3470 __set_long_size(__sz); 3471 __set_long_pointer(__new_data); 3472 } 3473 else 3474 __set_short_size(__sz); 3475 std::__debug_db_invalidate_all(this); 3476} 3477 3478template <class _CharT, class _Traits, class _Allocator> 3479inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3480typename basic_string<_CharT, _Traits, _Allocator>::const_reference 3481basic_string<_CharT, _Traits, _Allocator>::operator[](size_type __pos) const _NOEXCEPT 3482{ 3483 _LIBCPP_ASSERT(__pos <= size(), "string index out of bounds"); 3484 return *(data() + __pos); 3485} 3486 3487template <class _CharT, class _Traits, class _Allocator> 3488inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3489typename basic_string<_CharT, _Traits, _Allocator>::reference 3490basic_string<_CharT, _Traits, _Allocator>::operator[](size_type __pos) _NOEXCEPT 3491{ 3492 _LIBCPP_ASSERT(__pos <= size(), "string index out of bounds"); 3493 return *(__get_pointer() + __pos); 3494} 3495 3496template <class _CharT, class _Traits, class _Allocator> 3497_LIBCPP_CONSTEXPR_AFTER_CXX17 3498typename basic_string<_CharT, _Traits, _Allocator>::const_reference 3499basic_string<_CharT, _Traits, _Allocator>::at(size_type __n) const 3500{ 3501 if (__n >= size()) 3502 __throw_out_of_range(); 3503 return (*this)[__n]; 3504} 3505 3506template <class _CharT, class _Traits, class _Allocator> 3507_LIBCPP_CONSTEXPR_AFTER_CXX17 3508typename basic_string<_CharT, _Traits, _Allocator>::reference 3509basic_string<_CharT, _Traits, _Allocator>::at(size_type __n) 3510{ 3511 if (__n >= size()) 3512 __throw_out_of_range(); 3513 return (*this)[__n]; 3514} 3515 3516template <class _CharT, class _Traits, class _Allocator> 3517inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3518typename basic_string<_CharT, _Traits, _Allocator>::reference 3519basic_string<_CharT, _Traits, _Allocator>::front() _NOEXCEPT 3520{ 3521 _LIBCPP_ASSERT(!empty(), "string::front(): string is empty"); 3522 return *__get_pointer(); 3523} 3524 3525template <class _CharT, class _Traits, class _Allocator> 3526inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3527typename basic_string<_CharT, _Traits, _Allocator>::const_reference 3528basic_string<_CharT, _Traits, _Allocator>::front() const _NOEXCEPT 3529{ 3530 _LIBCPP_ASSERT(!empty(), "string::front(): string is empty"); 3531 return *data(); 3532} 3533 3534template <class _CharT, class _Traits, class _Allocator> 3535inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3536typename basic_string<_CharT, _Traits, _Allocator>::reference 3537basic_string<_CharT, _Traits, _Allocator>::back() _NOEXCEPT 3538{ 3539 _LIBCPP_ASSERT(!empty(), "string::back(): string is empty"); 3540 return *(__get_pointer() + size() - 1); 3541} 3542 3543template <class _CharT, class _Traits, class _Allocator> 3544inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3545typename basic_string<_CharT, _Traits, _Allocator>::const_reference 3546basic_string<_CharT, _Traits, _Allocator>::back() const _NOEXCEPT 3547{ 3548 _LIBCPP_ASSERT(!empty(), "string::back(): string is empty"); 3549 return *(data() + size() - 1); 3550} 3551 3552template <class _CharT, class _Traits, class _Allocator> 3553_LIBCPP_CONSTEXPR_AFTER_CXX17 3554typename basic_string<_CharT, _Traits, _Allocator>::size_type 3555basic_string<_CharT, _Traits, _Allocator>::copy(value_type* __s, size_type __n, size_type __pos) const 3556{ 3557 size_type __sz = size(); 3558 if (__pos > __sz) 3559 __throw_out_of_range(); 3560 size_type __rlen = std::min(__n, __sz - __pos); 3561 traits_type::copy(__s, data() + __pos, __rlen); 3562 return __rlen; 3563} 3564 3565template <class _CharT, class _Traits, class _Allocator> 3566inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3567basic_string<_CharT, _Traits, _Allocator> 3568basic_string<_CharT, _Traits, _Allocator>::substr(size_type __pos, size_type __n) const 3569{ 3570 return basic_string(*this, __pos, __n, __alloc()); 3571} 3572 3573template <class _CharT, class _Traits, class _Allocator> 3574inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3575void 3576basic_string<_CharT, _Traits, _Allocator>::swap(basic_string& __str) 3577#if _LIBCPP_STD_VER >= 14 3578 _NOEXCEPT 3579#else 3580 _NOEXCEPT_(!__alloc_traits::propagate_on_container_swap::value || 3581 __is_nothrow_swappable<allocator_type>::value) 3582#endif 3583{ 3584 if (!__is_long()) 3585 std::__debug_db_invalidate_all(this); 3586 if (!__str.__is_long()) 3587 std::__debug_db_invalidate_all(&__str); 3588 std::__debug_db_swap(this, &__str); 3589 3590 _LIBCPP_ASSERT( 3591 __alloc_traits::propagate_on_container_swap::value || 3592 __alloc_traits::is_always_equal::value || 3593 __alloc() == __str.__alloc(), "swapping non-equal allocators"); 3594 std::swap(__r_.first(), __str.__r_.first()); 3595 std::__swap_allocator(__alloc(), __str.__alloc()); 3596} 3597 3598// find 3599 3600template <class _Traits> 3601struct _LIBCPP_HIDDEN __traits_eq 3602{ 3603 typedef typename _Traits::char_type char_type; 3604 _LIBCPP_HIDE_FROM_ABI 3605 bool operator()(const char_type& __x, const char_type& __y) _NOEXCEPT 3606 {return _Traits::eq(__x, __y);} 3607}; 3608 3609template<class _CharT, class _Traits, class _Allocator> 3610_LIBCPP_CONSTEXPR_AFTER_CXX17 3611typename basic_string<_CharT, _Traits, _Allocator>::size_type 3612basic_string<_CharT, _Traits, _Allocator>::find(const value_type* __s, 3613 size_type __pos, 3614 size_type __n) const _NOEXCEPT 3615{ 3616 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::find(): received nullptr"); 3617 return __str_find<value_type, size_type, traits_type, npos> 3618 (data(), size(), __s, __pos, __n); 3619} 3620 3621template<class _CharT, class _Traits, class _Allocator> 3622inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3623typename basic_string<_CharT, _Traits, _Allocator>::size_type 3624basic_string<_CharT, _Traits, _Allocator>::find(const basic_string& __str, 3625 size_type __pos) const _NOEXCEPT 3626{ 3627 return __str_find<value_type, size_type, traits_type, npos> 3628 (data(), size(), __str.data(), __pos, __str.size()); 3629} 3630 3631template<class _CharT, class _Traits, class _Allocator> 3632template <class _Tp> 3633_LIBCPP_CONSTEXPR_AFTER_CXX17 3634__enable_if_t 3635< 3636 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3637 typename basic_string<_CharT, _Traits, _Allocator>::size_type 3638> 3639basic_string<_CharT, _Traits, _Allocator>::find(const _Tp &__t, 3640 size_type __pos) const _NOEXCEPT 3641{ 3642 __self_view __sv = __t; 3643 return __str_find<value_type, size_type, traits_type, npos> 3644 (data(), size(), __sv.data(), __pos, __sv.size()); 3645} 3646 3647template<class _CharT, class _Traits, class _Allocator> 3648inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3649typename basic_string<_CharT, _Traits, _Allocator>::size_type 3650basic_string<_CharT, _Traits, _Allocator>::find(const value_type* __s, 3651 size_type __pos) const _NOEXCEPT 3652{ 3653 _LIBCPP_ASSERT(__s != nullptr, "string::find(): received nullptr"); 3654 return __str_find<value_type, size_type, traits_type, npos> 3655 (data(), size(), __s, __pos, traits_type::length(__s)); 3656} 3657 3658template<class _CharT, class _Traits, class _Allocator> 3659_LIBCPP_CONSTEXPR_AFTER_CXX17 3660typename basic_string<_CharT, _Traits, _Allocator>::size_type 3661basic_string<_CharT, _Traits, _Allocator>::find(value_type __c, 3662 size_type __pos) const _NOEXCEPT 3663{ 3664 return __str_find<value_type, size_type, traits_type, npos> 3665 (data(), size(), __c, __pos); 3666} 3667 3668// rfind 3669 3670template<class _CharT, class _Traits, class _Allocator> 3671_LIBCPP_CONSTEXPR_AFTER_CXX17 3672typename basic_string<_CharT, _Traits, _Allocator>::size_type 3673basic_string<_CharT, _Traits, _Allocator>::rfind(const value_type* __s, 3674 size_type __pos, 3675 size_type __n) const _NOEXCEPT 3676{ 3677 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::rfind(): received nullptr"); 3678 return __str_rfind<value_type, size_type, traits_type, npos> 3679 (data(), size(), __s, __pos, __n); 3680} 3681 3682template<class _CharT, class _Traits, class _Allocator> 3683inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3684typename basic_string<_CharT, _Traits, _Allocator>::size_type 3685basic_string<_CharT, _Traits, _Allocator>::rfind(const basic_string& __str, 3686 size_type __pos) const _NOEXCEPT 3687{ 3688 return __str_rfind<value_type, size_type, traits_type, npos> 3689 (data(), size(), __str.data(), __pos, __str.size()); 3690} 3691 3692template<class _CharT, class _Traits, class _Allocator> 3693template <class _Tp> 3694_LIBCPP_CONSTEXPR_AFTER_CXX17 3695__enable_if_t 3696< 3697 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3698 typename basic_string<_CharT, _Traits, _Allocator>::size_type 3699> 3700basic_string<_CharT, _Traits, _Allocator>::rfind(const _Tp& __t, 3701 size_type __pos) const _NOEXCEPT 3702{ 3703 __self_view __sv = __t; 3704 return __str_rfind<value_type, size_type, traits_type, npos> 3705 (data(), size(), __sv.data(), __pos, __sv.size()); 3706} 3707 3708template<class _CharT, class _Traits, class _Allocator> 3709inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3710typename basic_string<_CharT, _Traits, _Allocator>::size_type 3711basic_string<_CharT, _Traits, _Allocator>::rfind(const value_type* __s, 3712 size_type __pos) const _NOEXCEPT 3713{ 3714 _LIBCPP_ASSERT(__s != nullptr, "string::rfind(): received nullptr"); 3715 return __str_rfind<value_type, size_type, traits_type, npos> 3716 (data(), size(), __s, __pos, traits_type::length(__s)); 3717} 3718 3719template<class _CharT, class _Traits, class _Allocator> 3720_LIBCPP_CONSTEXPR_AFTER_CXX17 3721typename basic_string<_CharT, _Traits, _Allocator>::size_type 3722basic_string<_CharT, _Traits, _Allocator>::rfind(value_type __c, 3723 size_type __pos) const _NOEXCEPT 3724{ 3725 return __str_rfind<value_type, size_type, traits_type, npos> 3726 (data(), size(), __c, __pos); 3727} 3728 3729// find_first_of 3730 3731template<class _CharT, class _Traits, class _Allocator> 3732_LIBCPP_CONSTEXPR_AFTER_CXX17 3733typename basic_string<_CharT, _Traits, _Allocator>::size_type 3734basic_string<_CharT, _Traits, _Allocator>::find_first_of(const value_type* __s, 3735 size_type __pos, 3736 size_type __n) const _NOEXCEPT 3737{ 3738 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::find_first_of(): received nullptr"); 3739 return __str_find_first_of<value_type, size_type, traits_type, npos> 3740 (data(), size(), __s, __pos, __n); 3741} 3742 3743template<class _CharT, class _Traits, class _Allocator> 3744inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3745typename basic_string<_CharT, _Traits, _Allocator>::size_type 3746basic_string<_CharT, _Traits, _Allocator>::find_first_of(const basic_string& __str, 3747 size_type __pos) const _NOEXCEPT 3748{ 3749 return __str_find_first_of<value_type, size_type, traits_type, npos> 3750 (data(), size(), __str.data(), __pos, __str.size()); 3751} 3752 3753template<class _CharT, class _Traits, class _Allocator> 3754template <class _Tp> 3755_LIBCPP_CONSTEXPR_AFTER_CXX17 3756__enable_if_t 3757< 3758 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3759 typename basic_string<_CharT, _Traits, _Allocator>::size_type 3760> 3761basic_string<_CharT, _Traits, _Allocator>::find_first_of(const _Tp& __t, 3762 size_type __pos) const _NOEXCEPT 3763{ 3764 __self_view __sv = __t; 3765 return __str_find_first_of<value_type, size_type, traits_type, npos> 3766 (data(), size(), __sv.data(), __pos, __sv.size()); 3767} 3768 3769template<class _CharT, class _Traits, class _Allocator> 3770inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3771typename basic_string<_CharT, _Traits, _Allocator>::size_type 3772basic_string<_CharT, _Traits, _Allocator>::find_first_of(const value_type* __s, 3773 size_type __pos) const _NOEXCEPT 3774{ 3775 _LIBCPP_ASSERT(__s != nullptr, "string::find_first_of(): received nullptr"); 3776 return __str_find_first_of<value_type, size_type, traits_type, npos> 3777 (data(), size(), __s, __pos, traits_type::length(__s)); 3778} 3779 3780template<class _CharT, class _Traits, class _Allocator> 3781inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3782typename basic_string<_CharT, _Traits, _Allocator>::size_type 3783basic_string<_CharT, _Traits, _Allocator>::find_first_of(value_type __c, 3784 size_type __pos) const _NOEXCEPT 3785{ 3786 return find(__c, __pos); 3787} 3788 3789// find_last_of 3790 3791template<class _CharT, class _Traits, class _Allocator> 3792inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3793typename basic_string<_CharT, _Traits, _Allocator>::size_type 3794basic_string<_CharT, _Traits, _Allocator>::find_last_of(const value_type* __s, 3795 size_type __pos, 3796 size_type __n) const _NOEXCEPT 3797{ 3798 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::find_last_of(): received nullptr"); 3799 return __str_find_last_of<value_type, size_type, traits_type, npos> 3800 (data(), size(), __s, __pos, __n); 3801} 3802 3803template<class _CharT, class _Traits, class _Allocator> 3804inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3805typename basic_string<_CharT, _Traits, _Allocator>::size_type 3806basic_string<_CharT, _Traits, _Allocator>::find_last_of(const basic_string& __str, 3807 size_type __pos) const _NOEXCEPT 3808{ 3809 return __str_find_last_of<value_type, size_type, traits_type, npos> 3810 (data(), size(), __str.data(), __pos, __str.size()); 3811} 3812 3813template<class _CharT, class _Traits, class _Allocator> 3814template <class _Tp> 3815_LIBCPP_CONSTEXPR_AFTER_CXX17 3816__enable_if_t 3817< 3818 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3819 typename basic_string<_CharT, _Traits, _Allocator>::size_type 3820> 3821basic_string<_CharT, _Traits, _Allocator>::find_last_of(const _Tp& __t, 3822 size_type __pos) const _NOEXCEPT 3823{ 3824 __self_view __sv = __t; 3825 return __str_find_last_of<value_type, size_type, traits_type, npos> 3826 (data(), size(), __sv.data(), __pos, __sv.size()); 3827} 3828 3829template<class _CharT, class _Traits, class _Allocator> 3830inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3831typename basic_string<_CharT, _Traits, _Allocator>::size_type 3832basic_string<_CharT, _Traits, _Allocator>::find_last_of(const value_type* __s, 3833 size_type __pos) const _NOEXCEPT 3834{ 3835 _LIBCPP_ASSERT(__s != nullptr, "string::find_last_of(): received nullptr"); 3836 return __str_find_last_of<value_type, size_type, traits_type, npos> 3837 (data(), size(), __s, __pos, traits_type::length(__s)); 3838} 3839 3840template<class _CharT, class _Traits, class _Allocator> 3841inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3842typename basic_string<_CharT, _Traits, _Allocator>::size_type 3843basic_string<_CharT, _Traits, _Allocator>::find_last_of(value_type __c, 3844 size_type __pos) const _NOEXCEPT 3845{ 3846 return rfind(__c, __pos); 3847} 3848 3849// find_first_not_of 3850 3851template<class _CharT, class _Traits, class _Allocator> 3852_LIBCPP_CONSTEXPR_AFTER_CXX17 3853typename basic_string<_CharT, _Traits, _Allocator>::size_type 3854basic_string<_CharT, _Traits, _Allocator>::find_first_not_of(const value_type* __s, 3855 size_type __pos, 3856 size_type __n) const _NOEXCEPT 3857{ 3858 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::find_first_not_of(): received nullptr"); 3859 return __str_find_first_not_of<value_type, size_type, traits_type, npos> 3860 (data(), size(), __s, __pos, __n); 3861} 3862 3863template<class _CharT, class _Traits, class _Allocator> 3864inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3865typename basic_string<_CharT, _Traits, _Allocator>::size_type 3866basic_string<_CharT, _Traits, _Allocator>::find_first_not_of(const basic_string& __str, 3867 size_type __pos) const _NOEXCEPT 3868{ 3869 return __str_find_first_not_of<value_type, size_type, traits_type, npos> 3870 (data(), size(), __str.data(), __pos, __str.size()); 3871} 3872 3873template<class _CharT, class _Traits, class _Allocator> 3874template <class _Tp> 3875_LIBCPP_CONSTEXPR_AFTER_CXX17 3876__enable_if_t 3877< 3878 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3879 typename basic_string<_CharT, _Traits, _Allocator>::size_type 3880> 3881basic_string<_CharT, _Traits, _Allocator>::find_first_not_of(const _Tp& __t, 3882 size_type __pos) const _NOEXCEPT 3883{ 3884 __self_view __sv = __t; 3885 return __str_find_first_not_of<value_type, size_type, traits_type, npos> 3886 (data(), size(), __sv.data(), __pos, __sv.size()); 3887} 3888 3889template<class _CharT, class _Traits, class _Allocator> 3890inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3891typename basic_string<_CharT, _Traits, _Allocator>::size_type 3892basic_string<_CharT, _Traits, _Allocator>::find_first_not_of(const value_type* __s, 3893 size_type __pos) const _NOEXCEPT 3894{ 3895 _LIBCPP_ASSERT(__s != nullptr, "string::find_first_not_of(): received nullptr"); 3896 return __str_find_first_not_of<value_type, size_type, traits_type, npos> 3897 (data(), size(), __s, __pos, traits_type::length(__s)); 3898} 3899 3900template<class _CharT, class _Traits, class _Allocator> 3901inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3902typename basic_string<_CharT, _Traits, _Allocator>::size_type 3903basic_string<_CharT, _Traits, _Allocator>::find_first_not_of(value_type __c, 3904 size_type __pos) const _NOEXCEPT 3905{ 3906 return __str_find_first_not_of<value_type, size_type, traits_type, npos> 3907 (data(), size(), __c, __pos); 3908} 3909 3910// find_last_not_of 3911 3912template<class _CharT, class _Traits, class _Allocator> 3913_LIBCPP_CONSTEXPR_AFTER_CXX17 3914typename basic_string<_CharT, _Traits, _Allocator>::size_type 3915basic_string<_CharT, _Traits, _Allocator>::find_last_not_of(const value_type* __s, 3916 size_type __pos, 3917 size_type __n) const _NOEXCEPT 3918{ 3919 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::find_last_not_of(): received nullptr"); 3920 return __str_find_last_not_of<value_type, size_type, traits_type, npos> 3921 (data(), size(), __s, __pos, __n); 3922} 3923 3924template<class _CharT, class _Traits, class _Allocator> 3925inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3926typename basic_string<_CharT, _Traits, _Allocator>::size_type 3927basic_string<_CharT, _Traits, _Allocator>::find_last_not_of(const basic_string& __str, 3928 size_type __pos) const _NOEXCEPT 3929{ 3930 return __str_find_last_not_of<value_type, size_type, traits_type, npos> 3931 (data(), size(), __str.data(), __pos, __str.size()); 3932} 3933 3934template<class _CharT, class _Traits, class _Allocator> 3935template <class _Tp> 3936_LIBCPP_CONSTEXPR_AFTER_CXX17 3937__enable_if_t 3938< 3939 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3940 typename basic_string<_CharT, _Traits, _Allocator>::size_type 3941> 3942basic_string<_CharT, _Traits, _Allocator>::find_last_not_of(const _Tp& __t, 3943 size_type __pos) const _NOEXCEPT 3944{ 3945 __self_view __sv = __t; 3946 return __str_find_last_not_of<value_type, size_type, traits_type, npos> 3947 (data(), size(), __sv.data(), __pos, __sv.size()); 3948} 3949 3950template<class _CharT, class _Traits, class _Allocator> 3951inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3952typename basic_string<_CharT, _Traits, _Allocator>::size_type 3953basic_string<_CharT, _Traits, _Allocator>::find_last_not_of(const value_type* __s, 3954 size_type __pos) const _NOEXCEPT 3955{ 3956 _LIBCPP_ASSERT(__s != nullptr, "string::find_last_not_of(): received nullptr"); 3957 return __str_find_last_not_of<value_type, size_type, traits_type, npos> 3958 (data(), size(), __s, __pos, traits_type::length(__s)); 3959} 3960 3961template<class _CharT, class _Traits, class _Allocator> 3962inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3963typename basic_string<_CharT, _Traits, _Allocator>::size_type 3964basic_string<_CharT, _Traits, _Allocator>::find_last_not_of(value_type __c, 3965 size_type __pos) const _NOEXCEPT 3966{ 3967 return __str_find_last_not_of<value_type, size_type, traits_type, npos> 3968 (data(), size(), __c, __pos); 3969} 3970 3971// compare 3972 3973template <class _CharT, class _Traits, class _Allocator> 3974template <class _Tp> 3975_LIBCPP_CONSTEXPR_AFTER_CXX17 3976__enable_if_t 3977< 3978 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3979 int 3980> 3981basic_string<_CharT, _Traits, _Allocator>::compare(const _Tp& __t) const _NOEXCEPT 3982{ 3983 __self_view __sv = __t; 3984 size_t __lhs_sz = size(); 3985 size_t __rhs_sz = __sv.size(); 3986 int __result = traits_type::compare(data(), __sv.data(), 3987 std::min(__lhs_sz, __rhs_sz)); 3988 if (__result != 0) 3989 return __result; 3990 if (__lhs_sz < __rhs_sz) 3991 return -1; 3992 if (__lhs_sz > __rhs_sz) 3993 return 1; 3994 return 0; 3995} 3996 3997template <class _CharT, class _Traits, class _Allocator> 3998inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3999int 4000basic_string<_CharT, _Traits, _Allocator>::compare(const basic_string& __str) const _NOEXCEPT 4001{ 4002 return compare(__self_view(__str)); 4003} 4004 4005template <class _CharT, class _Traits, class _Allocator> 4006inline _LIBCPP_CONSTEXPR_AFTER_CXX17 4007int 4008basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1, 4009 size_type __n1, 4010 const value_type* __s, 4011 size_type __n2) const 4012{ 4013 _LIBCPP_ASSERT(__n2 == 0 || __s != nullptr, "string::compare(): received nullptr"); 4014 size_type __sz = size(); 4015 if (__pos1 > __sz || __n2 == npos) 4016 __throw_out_of_range(); 4017 size_type __rlen = std::min(__n1, __sz - __pos1); 4018 int __r = traits_type::compare(data() + __pos1, __s, std::min(__rlen, __n2)); 4019 if (__r == 0) 4020 { 4021 if (__rlen < __n2) 4022 __r = -1; 4023 else if (__rlen > __n2) 4024 __r = 1; 4025 } 4026 return __r; 4027} 4028 4029template <class _CharT, class _Traits, class _Allocator> 4030template <class _Tp> 4031_LIBCPP_CONSTEXPR_AFTER_CXX17 4032__enable_if_t 4033< 4034 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 4035 int 4036> 4037basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1, 4038 size_type __n1, 4039 const _Tp& __t) const 4040{ 4041 __self_view __sv = __t; 4042 return compare(__pos1, __n1, __sv.data(), __sv.size()); 4043} 4044 4045template <class _CharT, class _Traits, class _Allocator> 4046inline _LIBCPP_CONSTEXPR_AFTER_CXX17 4047int 4048basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1, 4049 size_type __n1, 4050 const basic_string& __str) const 4051{ 4052 return compare(__pos1, __n1, __str.data(), __str.size()); 4053} 4054 4055template <class _CharT, class _Traits, class _Allocator> 4056template <class _Tp> 4057_LIBCPP_CONSTEXPR_AFTER_CXX17 4058__enable_if_t 4059< 4060 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value 4061 && !__is_same_uncvref<_Tp, basic_string<_CharT, _Traits, _Allocator> >::value, 4062 int 4063> 4064basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1, 4065 size_type __n1, 4066 const _Tp& __t, 4067 size_type __pos2, 4068 size_type __n2) const 4069{ 4070 __self_view __sv = __t; 4071 return __self_view(*this).substr(__pos1, __n1).compare(__sv.substr(__pos2, __n2)); 4072} 4073 4074template <class _CharT, class _Traits, class _Allocator> 4075_LIBCPP_CONSTEXPR_AFTER_CXX17 4076int 4077basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1, 4078 size_type __n1, 4079 const basic_string& __str, 4080 size_type __pos2, 4081 size_type __n2) const 4082{ 4083 return compare(__pos1, __n1, __self_view(__str), __pos2, __n2); 4084} 4085 4086template <class _CharT, class _Traits, class _Allocator> 4087_LIBCPP_CONSTEXPR_AFTER_CXX17 4088int 4089basic_string<_CharT, _Traits, _Allocator>::compare(const value_type* __s) const _NOEXCEPT 4090{ 4091 _LIBCPP_ASSERT(__s != nullptr, "string::compare(): received nullptr"); 4092 return compare(0, npos, __s, traits_type::length(__s)); 4093} 4094 4095template <class _CharT, class _Traits, class _Allocator> 4096_LIBCPP_CONSTEXPR_AFTER_CXX17 4097int 4098basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1, 4099 size_type __n1, 4100 const value_type* __s) const 4101{ 4102 _LIBCPP_ASSERT(__s != nullptr, "string::compare(): received nullptr"); 4103 return compare(__pos1, __n1, __s, traits_type::length(__s)); 4104} 4105 4106// __invariants 4107 4108template<class _CharT, class _Traits, class _Allocator> 4109inline _LIBCPP_CONSTEXPR_AFTER_CXX17 4110bool 4111basic_string<_CharT, _Traits, _Allocator>::__invariants() const 4112{ 4113 if (size() > capacity()) 4114 return false; 4115 if (capacity() < __min_cap - 1) 4116 return false; 4117 if (data() == nullptr) 4118 return false; 4119 if (data()[size()] != value_type()) 4120 return false; 4121 return true; 4122} 4123 4124// __clear_and_shrink 4125 4126template<class _CharT, class _Traits, class _Allocator> 4127inline _LIBCPP_CONSTEXPR_AFTER_CXX17 4128void 4129basic_string<_CharT, _Traits, _Allocator>::__clear_and_shrink() _NOEXCEPT 4130{ 4131 clear(); 4132 if(__is_long()) 4133 { 4134 __alloc_traits::deallocate(__alloc(), __get_long_pointer(), capacity() + 1); 4135 __set_long_cap(0); 4136 __set_short_size(0); 4137 traits_type::assign(*__get_short_pointer(), value_type()); 4138 } 4139} 4140 4141// operator== 4142 4143template<class _CharT, class _Traits, class _Allocator> 4144inline _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI 4145bool 4146operator==(const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4147 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4148{ 4149 size_t __lhs_sz = __lhs.size(); 4150 return __lhs_sz == __rhs.size() && _Traits::compare(__lhs.data(), 4151 __rhs.data(), 4152 __lhs_sz) == 0; 4153} 4154 4155template<class _Allocator> 4156inline _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI 4157bool 4158operator==(const basic_string<char, char_traits<char>, _Allocator>& __lhs, 4159 const basic_string<char, char_traits<char>, _Allocator>& __rhs) _NOEXCEPT 4160{ 4161 size_t __lhs_sz = __lhs.size(); 4162 if (__lhs_sz != __rhs.size()) 4163 return false; 4164 const char* __lp = __lhs.data(); 4165 const char* __rp = __rhs.data(); 4166 if (__lhs.__is_long()) 4167 return char_traits<char>::compare(__lp, __rp, __lhs_sz) == 0; 4168 for (; __lhs_sz != 0; --__lhs_sz, ++__lp, ++__rp) 4169 if (*__lp != *__rp) 4170 return false; 4171 return true; 4172} 4173 4174template<class _CharT, class _Traits, class _Allocator> 4175inline _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI 4176bool 4177operator==(const _CharT* __lhs, 4178 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4179{ 4180 typedef basic_string<_CharT, _Traits, _Allocator> _String; 4181 _LIBCPP_ASSERT(__lhs != nullptr, "operator==(char*, basic_string): received nullptr"); 4182 size_t __lhs_len = _Traits::length(__lhs); 4183 if (__lhs_len != __rhs.size()) return false; 4184 return __rhs.compare(0, _String::npos, __lhs, __lhs_len) == 0; 4185} 4186 4187template<class _CharT, class _Traits, class _Allocator> 4188inline _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI 4189bool 4190operator==(const basic_string<_CharT,_Traits,_Allocator>& __lhs, 4191 const _CharT* __rhs) _NOEXCEPT 4192{ 4193 typedef basic_string<_CharT, _Traits, _Allocator> _String; 4194 _LIBCPP_ASSERT(__rhs != nullptr, "operator==(basic_string, char*): received nullptr"); 4195 size_t __rhs_len = _Traits::length(__rhs); 4196 if (__rhs_len != __lhs.size()) return false; 4197 return __lhs.compare(0, _String::npos, __rhs, __rhs_len) == 0; 4198} 4199 4200template<class _CharT, class _Traits, class _Allocator> 4201inline _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI 4202bool 4203operator!=(const basic_string<_CharT,_Traits,_Allocator>& __lhs, 4204 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4205{ 4206 return !(__lhs == __rhs); 4207} 4208 4209template<class _CharT, class _Traits, class _Allocator> 4210inline _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI 4211bool 4212operator!=(const _CharT* __lhs, 4213 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4214{ 4215 return !(__lhs == __rhs); 4216} 4217 4218template<class _CharT, class _Traits, class _Allocator> 4219inline _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI 4220bool 4221operator!=(const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4222 const _CharT* __rhs) _NOEXCEPT 4223{ 4224 return !(__lhs == __rhs); 4225} 4226 4227// operator< 4228 4229template<class _CharT, class _Traits, class _Allocator> 4230inline _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI 4231bool 4232operator< (const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4233 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4234{ 4235 return __lhs.compare(__rhs) < 0; 4236} 4237 4238template<class _CharT, class _Traits, class _Allocator> 4239inline _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI 4240bool 4241operator< (const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4242 const _CharT* __rhs) _NOEXCEPT 4243{ 4244 return __lhs.compare(__rhs) < 0; 4245} 4246 4247template<class _CharT, class _Traits, class _Allocator> 4248inline _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI 4249bool 4250operator< (const _CharT* __lhs, 4251 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4252{ 4253 return __rhs.compare(__lhs) > 0; 4254} 4255 4256// operator> 4257 4258template<class _CharT, class _Traits, class _Allocator> 4259inline _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI 4260bool 4261operator> (const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4262 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4263{ 4264 return __rhs < __lhs; 4265} 4266 4267template<class _CharT, class _Traits, class _Allocator> 4268inline _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI 4269bool 4270operator> (const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4271 const _CharT* __rhs) _NOEXCEPT 4272{ 4273 return __rhs < __lhs; 4274} 4275 4276template<class _CharT, class _Traits, class _Allocator> 4277inline _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI 4278bool 4279operator> (const _CharT* __lhs, 4280 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4281{ 4282 return __rhs < __lhs; 4283} 4284 4285// operator<= 4286 4287template<class _CharT, class _Traits, class _Allocator> 4288inline _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI 4289bool 4290operator<=(const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4291 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4292{ 4293 return !(__rhs < __lhs); 4294} 4295 4296template<class _CharT, class _Traits, class _Allocator> 4297inline _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI 4298bool 4299operator<=(const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4300 const _CharT* __rhs) _NOEXCEPT 4301{ 4302 return !(__rhs < __lhs); 4303} 4304 4305template<class _CharT, class _Traits, class _Allocator> 4306inline _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI 4307bool 4308operator<=(const _CharT* __lhs, 4309 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4310{ 4311 return !(__rhs < __lhs); 4312} 4313 4314// operator>= 4315 4316template<class _CharT, class _Traits, class _Allocator> 4317inline _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI 4318bool 4319operator>=(const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4320 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4321{ 4322 return !(__lhs < __rhs); 4323} 4324 4325template<class _CharT, class _Traits, class _Allocator> 4326inline _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI 4327bool 4328operator>=(const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4329 const _CharT* __rhs) _NOEXCEPT 4330{ 4331 return !(__lhs < __rhs); 4332} 4333 4334template<class _CharT, class _Traits, class _Allocator> 4335inline _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI 4336bool 4337operator>=(const _CharT* __lhs, 4338 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4339{ 4340 return !(__lhs < __rhs); 4341} 4342 4343// operator + 4344 4345template<class _CharT, class _Traits, class _Allocator> 4346_LIBCPP_CONSTEXPR_AFTER_CXX17 4347basic_string<_CharT, _Traits, _Allocator> 4348operator+(const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4349 const basic_string<_CharT, _Traits, _Allocator>& __rhs) 4350{ 4351 using _String = basic_string<_CharT, _Traits, _Allocator>; 4352 auto __lhs_sz = __lhs.size(); 4353 auto __rhs_sz = __rhs.size(); 4354 _String __r(__uninitialized_size_tag(), 4355 __lhs_sz + __rhs_sz, 4356 _String::__alloc_traits::select_on_container_copy_construction(__lhs.get_allocator())); 4357 auto __ptr = std::__to_address(__r.__get_pointer()); 4358 _Traits::copy(__ptr, __lhs.data(), __lhs_sz); 4359 _Traits::copy(__ptr + __lhs_sz, __rhs.data(), __rhs_sz); 4360 _Traits::assign(__ptr + __lhs_sz + __rhs_sz, 1, _CharT()); 4361 return __r; 4362} 4363 4364template<class _CharT, class _Traits, class _Allocator> 4365_LIBCPP_CONSTEXPR_AFTER_CXX17 4366basic_string<_CharT, _Traits, _Allocator> 4367operator+(const _CharT* __lhs , const basic_string<_CharT,_Traits,_Allocator>& __rhs) 4368{ 4369 using _String = basic_string<_CharT, _Traits, _Allocator>; 4370 auto __lhs_sz = _Traits::length(__lhs); 4371 auto __rhs_sz = __rhs.size(); 4372 _String __r(__uninitialized_size_tag(), 4373 __lhs_sz + __rhs_sz, 4374 _String::__alloc_traits::select_on_container_copy_construction(__rhs.get_allocator())); 4375 auto __ptr = std::__to_address(__r.__get_pointer()); 4376 _Traits::copy(__ptr, __lhs, __lhs_sz); 4377 _Traits::copy(__ptr + __lhs_sz, __rhs.data(), __rhs_sz); 4378 _Traits::assign(__ptr + __lhs_sz + __rhs_sz, 1, _CharT()); 4379 return __r; 4380} 4381 4382template<class _CharT, class _Traits, class _Allocator> 4383_LIBCPP_CONSTEXPR_AFTER_CXX17 4384basic_string<_CharT, _Traits, _Allocator> 4385operator+(_CharT __lhs, const basic_string<_CharT,_Traits,_Allocator>& __rhs) 4386{ 4387 using _String = basic_string<_CharT, _Traits, _Allocator>; 4388 typename _String::size_type __rhs_sz = __rhs.size(); 4389 _String __r(__uninitialized_size_tag(), 4390 __rhs_sz + 1, 4391 _String::__alloc_traits::select_on_container_copy_construction(__rhs.get_allocator())); 4392 auto __ptr = std::__to_address(__r.__get_pointer()); 4393 _Traits::assign(__ptr, 1, __lhs); 4394 _Traits::copy(__ptr + 1, __rhs.data(), __rhs_sz); 4395 _Traits::assign(__ptr + 1 + __rhs_sz, 1, _CharT()); 4396 return __r; 4397} 4398 4399template<class _CharT, class _Traits, class _Allocator> 4400inline _LIBCPP_CONSTEXPR_AFTER_CXX17 4401basic_string<_CharT, _Traits, _Allocator> 4402operator+(const basic_string<_CharT, _Traits, _Allocator>& __lhs, const _CharT* __rhs) 4403{ 4404 using _String = basic_string<_CharT, _Traits, _Allocator>; 4405 typename _String::size_type __lhs_sz = __lhs.size(); 4406 typename _String::size_type __rhs_sz = _Traits::length(__rhs); 4407 _String __r(__uninitialized_size_tag(), 4408 __lhs_sz + __rhs_sz, 4409 _String::__alloc_traits::select_on_container_copy_construction(__lhs.get_allocator())); 4410 auto __ptr = std::__to_address(__r.__get_pointer()); 4411 _Traits::copy(__ptr, __lhs.data(), __lhs_sz); 4412 _Traits::copy(__ptr + __lhs_sz, __rhs, __rhs_sz); 4413 _Traits::assign(__ptr + __lhs_sz + __rhs_sz, 1, _CharT()); 4414 return __r; 4415} 4416 4417template<class _CharT, class _Traits, class _Allocator> 4418_LIBCPP_CONSTEXPR_AFTER_CXX17 4419basic_string<_CharT, _Traits, _Allocator> 4420operator+(const basic_string<_CharT, _Traits, _Allocator>& __lhs, _CharT __rhs) 4421{ 4422 using _String = basic_string<_CharT, _Traits, _Allocator>; 4423 typename _String::size_type __lhs_sz = __lhs.size(); 4424 _String __r(__uninitialized_size_tag(), 4425 __lhs_sz + 1, 4426 _String::__alloc_traits::select_on_container_copy_construction(__lhs.get_allocator())); 4427 auto __ptr = std::__to_address(__r.__get_pointer()); 4428 _Traits::copy(__ptr, __lhs.data(), __lhs_sz); 4429 _Traits::assign(__ptr + __lhs_sz, 1, __rhs); 4430 _Traits::assign(__ptr + 1 + __lhs_sz, 1, _CharT()); 4431 return __r; 4432} 4433 4434#ifndef _LIBCPP_CXX03_LANG 4435 4436template<class _CharT, class _Traits, class _Allocator> 4437inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 4438basic_string<_CharT, _Traits, _Allocator> 4439operator+(basic_string<_CharT, _Traits, _Allocator>&& __lhs, const basic_string<_CharT, _Traits, _Allocator>& __rhs) 4440{ 4441 return std::move(__lhs.append(__rhs)); 4442} 4443 4444template<class _CharT, class _Traits, class _Allocator> 4445inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 4446basic_string<_CharT, _Traits, _Allocator> 4447operator+(const basic_string<_CharT, _Traits, _Allocator>& __lhs, basic_string<_CharT, _Traits, _Allocator>&& __rhs) 4448{ 4449 return std::move(__rhs.insert(0, __lhs)); 4450} 4451 4452template<class _CharT, class _Traits, class _Allocator> 4453inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 4454basic_string<_CharT, _Traits, _Allocator> 4455operator+(basic_string<_CharT, _Traits, _Allocator>&& __lhs, basic_string<_CharT, _Traits, _Allocator>&& __rhs) 4456{ 4457 return std::move(__lhs.append(__rhs)); 4458} 4459 4460template<class _CharT, class _Traits, class _Allocator> 4461inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 4462basic_string<_CharT, _Traits, _Allocator> 4463operator+(const _CharT* __lhs , basic_string<_CharT,_Traits,_Allocator>&& __rhs) 4464{ 4465 return std::move(__rhs.insert(0, __lhs)); 4466} 4467 4468template<class _CharT, class _Traits, class _Allocator> 4469inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 4470basic_string<_CharT, _Traits, _Allocator> 4471operator+(_CharT __lhs, basic_string<_CharT,_Traits,_Allocator>&& __rhs) 4472{ 4473 __rhs.insert(__rhs.begin(), __lhs); 4474 return std::move(__rhs); 4475} 4476 4477template<class _CharT, class _Traits, class _Allocator> 4478inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 4479basic_string<_CharT, _Traits, _Allocator> 4480operator+(basic_string<_CharT, _Traits, _Allocator>&& __lhs, const _CharT* __rhs) 4481{ 4482 return std::move(__lhs.append(__rhs)); 4483} 4484 4485template<class _CharT, class _Traits, class _Allocator> 4486inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 4487basic_string<_CharT, _Traits, _Allocator> 4488operator+(basic_string<_CharT, _Traits, _Allocator>&& __lhs, _CharT __rhs) 4489{ 4490 __lhs.push_back(__rhs); 4491 return std::move(__lhs); 4492} 4493 4494#endif // _LIBCPP_CXX03_LANG 4495 4496// swap 4497 4498template<class _CharT, class _Traits, class _Allocator> 4499inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 4500void 4501swap(basic_string<_CharT, _Traits, _Allocator>& __lhs, 4502 basic_string<_CharT, _Traits, _Allocator>& __rhs) 4503 _NOEXCEPT_(_NOEXCEPT_(__lhs.swap(__rhs))) 4504{ 4505 __lhs.swap(__rhs); 4506} 4507 4508_LIBCPP_FUNC_VIS int stoi (const string& __str, size_t* __idx = nullptr, int __base = 10); 4509_LIBCPP_FUNC_VIS long stol (const string& __str, size_t* __idx = nullptr, int __base = 10); 4510_LIBCPP_FUNC_VIS unsigned long stoul (const string& __str, size_t* __idx = nullptr, int __base = 10); 4511_LIBCPP_FUNC_VIS long long stoll (const string& __str, size_t* __idx = nullptr, int __base = 10); 4512_LIBCPP_FUNC_VIS unsigned long long stoull(const string& __str, size_t* __idx = nullptr, int __base = 10); 4513 4514_LIBCPP_FUNC_VIS float stof (const string& __str, size_t* __idx = nullptr); 4515_LIBCPP_FUNC_VIS double stod (const string& __str, size_t* __idx = nullptr); 4516_LIBCPP_FUNC_VIS long double stold(const string& __str, size_t* __idx = nullptr); 4517 4518_LIBCPP_FUNC_VIS string to_string(int __val); 4519_LIBCPP_FUNC_VIS string to_string(unsigned __val); 4520_LIBCPP_FUNC_VIS string to_string(long __val); 4521_LIBCPP_FUNC_VIS string to_string(unsigned long __val); 4522_LIBCPP_FUNC_VIS string to_string(long long __val); 4523_LIBCPP_FUNC_VIS string to_string(unsigned long long __val); 4524_LIBCPP_FUNC_VIS string to_string(float __val); 4525_LIBCPP_FUNC_VIS string to_string(double __val); 4526_LIBCPP_FUNC_VIS string to_string(long double __val); 4527 4528#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 4529_LIBCPP_FUNC_VIS int stoi (const wstring& __str, size_t* __idx = nullptr, int __base = 10); 4530_LIBCPP_FUNC_VIS long stol (const wstring& __str, size_t* __idx = nullptr, int __base = 10); 4531_LIBCPP_FUNC_VIS unsigned long stoul (const wstring& __str, size_t* __idx = nullptr, int __base = 10); 4532_LIBCPP_FUNC_VIS long long stoll (const wstring& __str, size_t* __idx = nullptr, int __base = 10); 4533_LIBCPP_FUNC_VIS unsigned long long stoull(const wstring& __str, size_t* __idx = nullptr, int __base = 10); 4534 4535_LIBCPP_FUNC_VIS float stof (const wstring& __str, size_t* __idx = nullptr); 4536_LIBCPP_FUNC_VIS double stod (const wstring& __str, size_t* __idx = nullptr); 4537_LIBCPP_FUNC_VIS long double stold(const wstring& __str, size_t* __idx = nullptr); 4538 4539_LIBCPP_FUNC_VIS wstring to_wstring(int __val); 4540_LIBCPP_FUNC_VIS wstring to_wstring(unsigned __val); 4541_LIBCPP_FUNC_VIS wstring to_wstring(long __val); 4542_LIBCPP_FUNC_VIS wstring to_wstring(unsigned long __val); 4543_LIBCPP_FUNC_VIS wstring to_wstring(long long __val); 4544_LIBCPP_FUNC_VIS wstring to_wstring(unsigned long long __val); 4545_LIBCPP_FUNC_VIS wstring to_wstring(float __val); 4546_LIBCPP_FUNC_VIS wstring to_wstring(double __val); 4547_LIBCPP_FUNC_VIS wstring to_wstring(long double __val); 4548#endif // _LIBCPP_HAS_NO_WIDE_CHARACTERS 4549 4550template<class _CharT, class _Traits, class _Allocator> 4551_LIBCPP_TEMPLATE_DATA_VIS 4552const typename basic_string<_CharT, _Traits, _Allocator>::size_type 4553 basic_string<_CharT, _Traits, _Allocator>::npos; 4554 4555template <class _CharT, class _Allocator> 4556struct _LIBCPP_TEMPLATE_VIS 4557 hash<basic_string<_CharT, char_traits<_CharT>, _Allocator> > 4558 : public unary_function< 4559 basic_string<_CharT, char_traits<_CharT>, _Allocator>, size_t> 4560{ 4561 size_t 4562 operator()(const basic_string<_CharT, char_traits<_CharT>, _Allocator>& __val) const _NOEXCEPT 4563 { return __do_string_hash(__val.data(), __val.data() + __val.size()); } 4564}; 4565 4566 4567template<class _CharT, class _Traits, class _Allocator> 4568basic_ostream<_CharT, _Traits>& 4569operator<<(basic_ostream<_CharT, _Traits>& __os, 4570 const basic_string<_CharT, _Traits, _Allocator>& __str); 4571 4572template<class _CharT, class _Traits, class _Allocator> 4573basic_istream<_CharT, _Traits>& 4574operator>>(basic_istream<_CharT, _Traits>& __is, 4575 basic_string<_CharT, _Traits, _Allocator>& __str); 4576 4577template<class _CharT, class _Traits, class _Allocator> 4578basic_istream<_CharT, _Traits>& 4579getline(basic_istream<_CharT, _Traits>& __is, 4580 basic_string<_CharT, _Traits, _Allocator>& __str, _CharT __dlm); 4581 4582template<class _CharT, class _Traits, class _Allocator> 4583inline _LIBCPP_HIDE_FROM_ABI 4584basic_istream<_CharT, _Traits>& 4585getline(basic_istream<_CharT, _Traits>& __is, 4586 basic_string<_CharT, _Traits, _Allocator>& __str); 4587 4588template<class _CharT, class _Traits, class _Allocator> 4589inline _LIBCPP_HIDE_FROM_ABI 4590basic_istream<_CharT, _Traits>& 4591getline(basic_istream<_CharT, _Traits>&& __is, 4592 basic_string<_CharT, _Traits, _Allocator>& __str, _CharT __dlm); 4593 4594template<class _CharT, class _Traits, class _Allocator> 4595inline _LIBCPP_HIDE_FROM_ABI 4596basic_istream<_CharT, _Traits>& 4597getline(basic_istream<_CharT, _Traits>&& __is, 4598 basic_string<_CharT, _Traits, _Allocator>& __str); 4599 4600#if _LIBCPP_STD_VER > 17 4601template <class _CharT, class _Traits, class _Allocator, class _Up> 4602inline _LIBCPP_HIDE_FROM_ABI 4603 typename basic_string<_CharT, _Traits, _Allocator>::size_type 4604 erase(basic_string<_CharT, _Traits, _Allocator>& __str, const _Up& __v) { 4605 auto __old_size = __str.size(); 4606 __str.erase(std::remove(__str.begin(), __str.end(), __v), __str.end()); 4607 return __old_size - __str.size(); 4608} 4609 4610template <class _CharT, class _Traits, class _Allocator, class _Predicate> 4611inline _LIBCPP_HIDE_FROM_ABI 4612 typename basic_string<_CharT, _Traits, _Allocator>::size_type 4613 erase_if(basic_string<_CharT, _Traits, _Allocator>& __str, 4614 _Predicate __pred) { 4615 auto __old_size = __str.size(); 4616 __str.erase(std::remove_if(__str.begin(), __str.end(), __pred), 4617 __str.end()); 4618 return __old_size - __str.size(); 4619} 4620#endif 4621 4622#if _LIBCPP_DEBUG_LEVEL == 2 4623 4624template<class _CharT, class _Traits, class _Allocator> 4625bool 4626basic_string<_CharT, _Traits, _Allocator>::__dereferenceable(const const_iterator* __i) const 4627{ 4628 return data() <= std::__to_address(__i->base()) && 4629 std::__to_address(__i->base()) < data() + size(); 4630} 4631 4632template<class _CharT, class _Traits, class _Allocator> 4633bool 4634basic_string<_CharT, _Traits, _Allocator>::__decrementable(const const_iterator* __i) const 4635{ 4636 return data() < std::__to_address(__i->base()) && 4637 std::__to_address(__i->base()) <= data() + size(); 4638} 4639 4640template<class _CharT, class _Traits, class _Allocator> 4641bool 4642basic_string<_CharT, _Traits, _Allocator>::__addable(const const_iterator* __i, ptrdiff_t __n) const 4643{ 4644 const value_type* __p = std::__to_address(__i->base()) + __n; 4645 return data() <= __p && __p <= data() + size(); 4646} 4647 4648template<class _CharT, class _Traits, class _Allocator> 4649bool 4650basic_string<_CharT, _Traits, _Allocator>::__subscriptable(const const_iterator* __i, ptrdiff_t __n) const 4651{ 4652 const value_type* __p = std::__to_address(__i->base()) + __n; 4653 return data() <= __p && __p < data() + size(); 4654} 4655 4656#endif // _LIBCPP_DEBUG_LEVEL == 2 4657 4658#if _LIBCPP_STD_VER > 11 4659// Literal suffixes for basic_string [basic.string.literals] 4660inline namespace literals 4661{ 4662 inline namespace string_literals 4663 { 4664 inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 4665 basic_string<char> operator "" s( const char *__str, size_t __len ) 4666 { 4667 return basic_string<char> (__str, __len); 4668 } 4669 4670#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 4671 inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 4672 basic_string<wchar_t> operator "" s( const wchar_t *__str, size_t __len ) 4673 { 4674 return basic_string<wchar_t> (__str, __len); 4675 } 4676#endif 4677 4678#ifndef _LIBCPP_HAS_NO_CHAR8_T 4679 inline _LIBCPP_HIDE_FROM_ABI constexpr 4680 basic_string<char8_t> operator "" s(const char8_t *__str, size_t __len) _NOEXCEPT 4681 { 4682 return basic_string<char8_t> (__str, __len); 4683 } 4684#endif 4685 4686 inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 4687 basic_string<char16_t> operator "" s( const char16_t *__str, size_t __len ) 4688 { 4689 return basic_string<char16_t> (__str, __len); 4690 } 4691 4692 inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 4693 basic_string<char32_t> operator "" s( const char32_t *__str, size_t __len ) 4694 { 4695 return basic_string<char32_t> (__str, __len); 4696 } 4697 } // namespace string_literals 4698} // namespace literals 4699 4700#if _LIBCPP_STD_VER > 17 4701template <> 4702inline constexpr bool __format::__enable_insertable<std::basic_string<char>> = true; 4703#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 4704template <> 4705inline constexpr bool __format::__enable_insertable<std::basic_string<wchar_t>> = true; 4706#endif 4707#endif 4708 4709#endif 4710 4711_LIBCPP_END_NAMESPACE_STD 4712 4713_LIBCPP_POP_MACROS 4714 4715#endif // _LIBCPP_STRING 4716