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_all_iterators(); 1791 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 void __invalidate_iterators_past(size_type); 1792 1793 template<class _Tp> 1794 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 1795 bool __addr_in_range(_Tp&& __t) const { 1796 // assume that the ranges overlap, because we can't check during constant evaluation 1797 if (__libcpp_is_constant_evaluated()) 1798 return true; 1799 const volatile void *__p = std::addressof(__t); 1800 return data() <= __p && __p <= data() + size(); 1801 } 1802 1803 _LIBCPP_NORETURN _LIBCPP_HIDE_FROM_ABI 1804 void __throw_length_error() const { 1805 std::__throw_length_error("basic_string"); 1806 } 1807 1808 _LIBCPP_NORETURN _LIBCPP_HIDE_FROM_ABI 1809 void __throw_out_of_range() const { 1810 std::__throw_out_of_range("basic_string"); 1811 } 1812 1813 friend _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string operator+<>(const basic_string&, const basic_string&); 1814 friend _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string operator+<>(const value_type*, const basic_string&); 1815 friend _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string operator+<>(value_type, const basic_string&); 1816 friend _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string operator+<>(const basic_string&, const value_type*); 1817 friend _LIBCPP_CONSTEXPR_AFTER_CXX17 basic_string operator+<>(const basic_string&, value_type); 1818}; 1819 1820// These declarations must appear before any functions are implicitly used 1821// so that they have the correct visibility specifier. 1822#ifdef _LIBCPP_ABI_STRING_OPTIMIZED_EXTERNAL_INSTANTIATION 1823 _LIBCPP_STRING_UNSTABLE_EXTERN_TEMPLATE_LIST(_LIBCPP_EXTERN_TEMPLATE, char) 1824# ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 1825 _LIBCPP_STRING_UNSTABLE_EXTERN_TEMPLATE_LIST(_LIBCPP_EXTERN_TEMPLATE, wchar_t) 1826# endif 1827#else 1828 _LIBCPP_STRING_V1_EXTERN_TEMPLATE_LIST(_LIBCPP_EXTERN_TEMPLATE, char) 1829# ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 1830 _LIBCPP_STRING_V1_EXTERN_TEMPLATE_LIST(_LIBCPP_EXTERN_TEMPLATE, wchar_t) 1831# endif 1832#endif 1833 1834 1835#if _LIBCPP_STD_VER >= 17 1836template<class _InputIterator, 1837 class _CharT = __iter_value_type<_InputIterator>, 1838 class _Allocator = allocator<_CharT>, 1839 class = enable_if_t<__is_cpp17_input_iterator<_InputIterator>::value>, 1840 class = enable_if_t<__is_allocator<_Allocator>::value> 1841 > 1842basic_string(_InputIterator, _InputIterator, _Allocator = _Allocator()) 1843 -> basic_string<_CharT, char_traits<_CharT>, _Allocator>; 1844 1845template<class _CharT, 1846 class _Traits, 1847 class _Allocator = allocator<_CharT>, 1848 class = enable_if_t<__is_allocator<_Allocator>::value> 1849 > 1850explicit basic_string(basic_string_view<_CharT, _Traits>, const _Allocator& = _Allocator()) 1851 -> basic_string<_CharT, _Traits, _Allocator>; 1852 1853template<class _CharT, 1854 class _Traits, 1855 class _Allocator = allocator<_CharT>, 1856 class = enable_if_t<__is_allocator<_Allocator>::value>, 1857 class _Sz = typename allocator_traits<_Allocator>::size_type 1858 > 1859basic_string(basic_string_view<_CharT, _Traits>, _Sz, _Sz, const _Allocator& = _Allocator()) 1860 -> basic_string<_CharT, _Traits, _Allocator>; 1861#endif 1862 1863template <class _CharT, class _Traits, class _Allocator> 1864inline _LIBCPP_CONSTEXPR_AFTER_CXX17 1865void 1866basic_string<_CharT, _Traits, _Allocator>::__invalidate_all_iterators() 1867{ 1868 std::__debug_db_invalidate_all(this); 1869} 1870 1871template <class _CharT, class _Traits, class _Allocator> 1872inline _LIBCPP_CONSTEXPR_AFTER_CXX17 1873void 1874basic_string<_CharT, _Traits, _Allocator>::__invalidate_iterators_past(size_type __pos) 1875{ 1876#if _LIBCPP_DEBUG_LEVEL == 2 1877 if (!__libcpp_is_constant_evaluated()) { 1878 __c_node* __c = __get_db()->__find_c_and_lock(this); 1879 if (__c) 1880 { 1881 const_pointer __new_last = __get_pointer() + __pos; 1882 for (__i_node** __p = __c->end_; __p != __c->beg_; ) 1883 { 1884 --__p; 1885 const_iterator* __i = static_cast<const_iterator*>((*__p)->__i_); 1886 if (__i->base() > __new_last) 1887 { 1888 (*__p)->__c_ = nullptr; 1889 if (--__c->end_ != __p) 1890 std::memmove(__p, __p+1, (__c->end_ - __p)*sizeof(__i_node*)); 1891 } 1892 } 1893 __get_db()->unlock(); 1894 } 1895 } 1896#else 1897 (void)__pos; 1898#endif // _LIBCPP_DEBUG_LEVEL == 2 1899} 1900 1901template <class _CharT, class _Traits, class _Allocator> 1902inline _LIBCPP_CONSTEXPR_AFTER_CXX17 1903basic_string<_CharT, _Traits, _Allocator>::basic_string() 1904 _NOEXCEPT_(is_nothrow_default_constructible<allocator_type>::value) 1905 : __r_(__default_init_tag(), __default_init_tag()) 1906{ 1907 std::__debug_db_insert_c(this); 1908 __default_init(); 1909} 1910 1911template <class _CharT, class _Traits, class _Allocator> 1912inline _LIBCPP_CONSTEXPR_AFTER_CXX17 1913basic_string<_CharT, _Traits, _Allocator>::basic_string(const allocator_type& __a) 1914#if _LIBCPP_STD_VER <= 14 1915 _NOEXCEPT_(is_nothrow_copy_constructible<allocator_type>::value) 1916#else 1917 _NOEXCEPT 1918#endif 1919: __r_(__default_init_tag(), __a) 1920{ 1921 std::__debug_db_insert_c(this); 1922 __default_init(); 1923} 1924 1925template <class _CharT, class _Traits, class _Allocator> 1926_LIBCPP_CONSTEXPR_AFTER_CXX17 1927void basic_string<_CharT, _Traits, _Allocator>::__init(const value_type* __s, 1928 size_type __sz, 1929 size_type __reserve) 1930{ 1931 if (__libcpp_is_constant_evaluated()) 1932 __zero(); 1933 if (__reserve > max_size()) 1934 __throw_length_error(); 1935 pointer __p; 1936 if (__fits_in_sso(__reserve)) 1937 { 1938 __set_short_size(__sz); 1939 __p = __get_short_pointer(); 1940 } 1941 else 1942 { 1943 auto __allocation = std::__allocate_at_least(__alloc(), __recommend(__reserve) + 1); 1944 __p = __allocation.ptr; 1945 __begin_lifetime(__p, __allocation.count); 1946 __set_long_pointer(__p); 1947 __set_long_cap(__allocation.count); 1948 __set_long_size(__sz); 1949 } 1950 traits_type::copy(std::__to_address(__p), __s, __sz); 1951 traits_type::assign(__p[__sz], value_type()); 1952} 1953 1954template <class _CharT, class _Traits, class _Allocator> 1955_LIBCPP_CONSTEXPR_AFTER_CXX17 1956void 1957basic_string<_CharT, _Traits, _Allocator>::__init(const value_type* __s, size_type __sz) 1958{ 1959 if (__libcpp_is_constant_evaluated()) 1960 __zero(); 1961 if (__sz > max_size()) 1962 __throw_length_error(); 1963 pointer __p; 1964 if (__fits_in_sso(__sz)) 1965 { 1966 __set_short_size(__sz); 1967 __p = __get_short_pointer(); 1968 } 1969 else 1970 { 1971 auto __allocation = std::__allocate_at_least(__alloc(), __recommend(__sz) + 1); 1972 __p = __allocation.ptr; 1973 __begin_lifetime(__p, __allocation.count); 1974 __set_long_pointer(__p); 1975 __set_long_cap(__allocation.count); 1976 __set_long_size(__sz); 1977 } 1978 traits_type::copy(std::__to_address(__p), __s, __sz); 1979 traits_type::assign(__p[__sz], value_type()); 1980} 1981 1982template <class _CharT, class _Traits, class _Allocator> 1983template <class> 1984_LIBCPP_CONSTEXPR_AFTER_CXX17 1985basic_string<_CharT, _Traits, _Allocator>::basic_string(const _CharT* __s, const _Allocator& __a) 1986 : __r_(__default_init_tag(), __a) 1987{ 1988 _LIBCPP_ASSERT(__s != nullptr, "basic_string(const char*, allocator) detected nullptr"); 1989 __init(__s, traits_type::length(__s)); 1990 std::__debug_db_insert_c(this); 1991} 1992 1993template <class _CharT, class _Traits, class _Allocator> 1994inline _LIBCPP_CONSTEXPR_AFTER_CXX17 1995basic_string<_CharT, _Traits, _Allocator>::basic_string(const _CharT* __s, size_type __n) 1996 : __r_(__default_init_tag(), __default_init_tag()) 1997{ 1998 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "basic_string(const char*, n) detected nullptr"); 1999 __init(__s, __n); 2000 std::__debug_db_insert_c(this); 2001} 2002 2003template <class _CharT, class _Traits, class _Allocator> 2004inline _LIBCPP_CONSTEXPR_AFTER_CXX17 2005basic_string<_CharT, _Traits, _Allocator>::basic_string(const _CharT* __s, size_type __n, const _Allocator& __a) 2006 : __r_(__default_init_tag(), __a) 2007{ 2008 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "basic_string(const char*, n, allocator) detected nullptr"); 2009 __init(__s, __n); 2010 std::__debug_db_insert_c(this); 2011} 2012 2013template <class _CharT, class _Traits, class _Allocator> 2014_LIBCPP_CONSTEXPR_AFTER_CXX17 2015basic_string<_CharT, _Traits, _Allocator>::basic_string(const basic_string& __str) 2016 : __r_(__default_init_tag(), __alloc_traits::select_on_container_copy_construction(__str.__alloc())) 2017{ 2018 if (!__str.__is_long()) 2019 __r_.first().__r = __str.__r_.first().__r; 2020 else 2021 __init_copy_ctor_external(std::__to_address(__str.__get_long_pointer()), 2022 __str.__get_long_size()); 2023 std::__debug_db_insert_c(this); 2024} 2025 2026template <class _CharT, class _Traits, class _Allocator> 2027_LIBCPP_CONSTEXPR_AFTER_CXX17 2028basic_string<_CharT, _Traits, _Allocator>::basic_string( 2029 const basic_string& __str, const allocator_type& __a) 2030 : __r_(__default_init_tag(), __a) 2031{ 2032 if (!__str.__is_long()) 2033 __r_.first().__r = __str.__r_.first().__r; 2034 else 2035 __init_copy_ctor_external(std::__to_address(__str.__get_long_pointer()), 2036 __str.__get_long_size()); 2037 std::__debug_db_insert_c(this); 2038} 2039 2040template <class _CharT, class _Traits, class _Allocator> 2041_LIBCPP_CONSTEXPR_AFTER_CXX17 2042void basic_string<_CharT, _Traits, _Allocator>::__init_copy_ctor_external( 2043 const value_type* __s, size_type __sz) { 2044 if (__libcpp_is_constant_evaluated()) 2045 __zero(); 2046 pointer __p; 2047 if (__fits_in_sso(__sz)) { 2048 __p = __get_short_pointer(); 2049 __set_short_size(__sz); 2050 } else { 2051 if (__sz > max_size()) 2052 __throw_length_error(); 2053 auto __allocation = std::__allocate_at_least(__alloc(), __recommend(__sz) + 1); 2054 __p = __allocation.ptr; 2055 __begin_lifetime(__p, __allocation.count); 2056 __set_long_pointer(__p); 2057 __set_long_cap(__allocation.count); 2058 __set_long_size(__sz); 2059 } 2060 traits_type::copy(std::__to_address(__p), __s, __sz + 1); 2061} 2062 2063#ifndef _LIBCPP_CXX03_LANG 2064 2065template <class _CharT, class _Traits, class _Allocator> 2066inline _LIBCPP_CONSTEXPR_AFTER_CXX17 2067basic_string<_CharT, _Traits, _Allocator>::basic_string(basic_string&& __str) 2068#if _LIBCPP_STD_VER <= 14 2069 _NOEXCEPT_(is_nothrow_move_constructible<allocator_type>::value) 2070#else 2071 _NOEXCEPT 2072#endif 2073 : __r_(std::move(__str.__r_)) 2074{ 2075 __str.__default_init(); 2076 std::__debug_db_insert_c(this); 2077 if (__is_long()) 2078 std::__debug_db_swap(this, &__str); 2079} 2080 2081template <class _CharT, class _Traits, class _Allocator> 2082inline _LIBCPP_CONSTEXPR_AFTER_CXX17 2083basic_string<_CharT, _Traits, _Allocator>::basic_string(basic_string&& __str, const allocator_type& __a) 2084 : __r_(__default_init_tag(), __a) 2085{ 2086 if (__str.__is_long() && __a != __str.__alloc()) // copy, not move 2087 __init(std::__to_address(__str.__get_long_pointer()), __str.__get_long_size()); 2088 else 2089 { 2090 if (__libcpp_is_constant_evaluated()) { 2091 __zero(); 2092 __r_.first().__l = __str.__r_.first().__l; 2093 } else { 2094 __r_.first().__r = __str.__r_.first().__r; 2095 } 2096 __str.__default_init(); 2097 } 2098 std::__debug_db_insert_c(this); 2099 if (__is_long()) 2100 std::__debug_db_swap(this, &__str); 2101} 2102 2103#endif // _LIBCPP_CXX03_LANG 2104 2105template <class _CharT, class _Traits, class _Allocator> 2106_LIBCPP_CONSTEXPR_AFTER_CXX17 2107void 2108basic_string<_CharT, _Traits, _Allocator>::__init(size_type __n, value_type __c) 2109{ 2110 if (__libcpp_is_constant_evaluated()) 2111 __zero(); 2112 if (__n > max_size()) 2113 __throw_length_error(); 2114 pointer __p; 2115 if (__fits_in_sso(__n)) 2116 { 2117 __set_short_size(__n); 2118 __p = __get_short_pointer(); 2119 } 2120 else 2121 { 2122 auto __allocation = std::__allocate_at_least(__alloc(), __recommend(__n) + 1); 2123 __p = __allocation.ptr; 2124 __begin_lifetime(__p, __allocation.count); 2125 __set_long_pointer(__p); 2126 __set_long_cap(__allocation.count); 2127 __set_long_size(__n); 2128 } 2129 traits_type::assign(std::__to_address(__p), __n, __c); 2130 traits_type::assign(__p[__n], value_type()); 2131} 2132 2133template <class _CharT, class _Traits, class _Allocator> 2134inline _LIBCPP_CONSTEXPR_AFTER_CXX17 2135basic_string<_CharT, _Traits, _Allocator>::basic_string(size_type __n, _CharT __c) 2136 : __r_(__default_init_tag(), __default_init_tag()) 2137{ 2138 __init(__n, __c); 2139 std::__debug_db_insert_c(this); 2140} 2141 2142template <class _CharT, class _Traits, class _Allocator> 2143template <class> 2144_LIBCPP_CONSTEXPR_AFTER_CXX17 2145basic_string<_CharT, _Traits, _Allocator>::basic_string(size_type __n, _CharT __c, const _Allocator& __a) 2146 : __r_(__default_init_tag(), __a) 2147{ 2148 __init(__n, __c); 2149 std::__debug_db_insert_c(this); 2150} 2151 2152template <class _CharT, class _Traits, class _Allocator> 2153_LIBCPP_CONSTEXPR_AFTER_CXX17 2154basic_string<_CharT, _Traits, _Allocator>::basic_string(const basic_string& __str, 2155 size_type __pos, size_type __n, 2156 const _Allocator& __a) 2157 : __r_(__default_init_tag(), __a) 2158{ 2159 size_type __str_sz = __str.size(); 2160 if (__pos > __str_sz) 2161 __throw_out_of_range(); 2162 __init(__str.data() + __pos, std::min(__n, __str_sz - __pos)); 2163 std::__debug_db_insert_c(this); 2164} 2165 2166template <class _CharT, class _Traits, class _Allocator> 2167inline _LIBCPP_CONSTEXPR_AFTER_CXX17 2168basic_string<_CharT, _Traits, _Allocator>::basic_string(const basic_string& __str, size_type __pos, 2169 const _Allocator& __a) 2170 : __r_(__default_init_tag(), __a) 2171{ 2172 size_type __str_sz = __str.size(); 2173 if (__pos > __str_sz) 2174 __throw_out_of_range(); 2175 __init(__str.data() + __pos, __str_sz - __pos); 2176 std::__debug_db_insert_c(this); 2177} 2178 2179template <class _CharT, class _Traits, class _Allocator> 2180template <class _Tp, class> 2181_LIBCPP_CONSTEXPR_AFTER_CXX17 2182basic_string<_CharT, _Traits, _Allocator>::basic_string( 2183 const _Tp& __t, size_type __pos, size_type __n, const allocator_type& __a) 2184 : __r_(__default_init_tag(), __a) 2185{ 2186 __self_view __sv0 = __t; 2187 __self_view __sv = __sv0.substr(__pos, __n); 2188 __init(__sv.data(), __sv.size()); 2189 std::__debug_db_insert_c(this); 2190} 2191 2192template <class _CharT, class _Traits, class _Allocator> 2193template <class _Tp, class> 2194_LIBCPP_CONSTEXPR_AFTER_CXX17 2195basic_string<_CharT, _Traits, _Allocator>::basic_string(const _Tp & __t) 2196 : __r_(__default_init_tag(), __default_init_tag()) 2197{ 2198 __self_view __sv = __t; 2199 __init(__sv.data(), __sv.size()); 2200 std::__debug_db_insert_c(this); 2201} 2202 2203template <class _CharT, class _Traits, class _Allocator> 2204template <class _Tp, class> 2205_LIBCPP_CONSTEXPR_AFTER_CXX17 2206basic_string<_CharT, _Traits, _Allocator>::basic_string(const _Tp & __t, const _Allocator& __a) 2207 : __r_(__default_init_tag(), __a) 2208{ 2209 __self_view __sv = __t; 2210 __init(__sv.data(), __sv.size()); 2211 std::__debug_db_insert_c(this); 2212} 2213 2214template <class _CharT, class _Traits, class _Allocator> 2215template <class _InputIterator> 2216_LIBCPP_CONSTEXPR_AFTER_CXX17 2217__enable_if_t 2218< 2219 __is_exactly_cpp17_input_iterator<_InputIterator>::value 2220> 2221basic_string<_CharT, _Traits, _Allocator>::__init(_InputIterator __first, _InputIterator __last) 2222{ 2223 __default_init(); 2224#ifndef _LIBCPP_NO_EXCEPTIONS 2225 try 2226 { 2227#endif // _LIBCPP_NO_EXCEPTIONS 2228 for (; __first != __last; ++__first) 2229 push_back(*__first); 2230#ifndef _LIBCPP_NO_EXCEPTIONS 2231 } 2232 catch (...) 2233 { 2234 if (__is_long()) 2235 __alloc_traits::deallocate(__alloc(), __get_long_pointer(), __get_long_cap()); 2236 throw; 2237 } 2238#endif // _LIBCPP_NO_EXCEPTIONS 2239} 2240 2241template <class _CharT, class _Traits, class _Allocator> 2242template <class _ForwardIterator> 2243_LIBCPP_CONSTEXPR_AFTER_CXX17 2244__enable_if_t 2245< 2246 __is_cpp17_forward_iterator<_ForwardIterator>::value 2247> 2248basic_string<_CharT, _Traits, _Allocator>::__init(_ForwardIterator __first, _ForwardIterator __last) 2249{ 2250 if (__libcpp_is_constant_evaluated()) 2251 __zero(); 2252 size_type __sz = static_cast<size_type>(std::distance(__first, __last)); 2253 if (__sz > max_size()) 2254 __throw_length_error(); 2255 pointer __p; 2256 if (__fits_in_sso(__sz)) 2257 { 2258 __set_short_size(__sz); 2259 __p = __get_short_pointer(); 2260 } 2261 else 2262 { 2263 auto __allocation = std::__allocate_at_least(__alloc(), __recommend(__sz) + 1); 2264 __p = __allocation.ptr; 2265 __begin_lifetime(__p, __allocation.count); 2266 __set_long_pointer(__p); 2267 __set_long_cap(__allocation.count); 2268 __set_long_size(__sz); 2269 } 2270 2271#ifndef _LIBCPP_NO_EXCEPTIONS 2272 try 2273 { 2274#endif // _LIBCPP_NO_EXCEPTIONS 2275 for (; __first != __last; ++__first, (void) ++__p) 2276 traits_type::assign(*__p, *__first); 2277 traits_type::assign(*__p, value_type()); 2278#ifndef _LIBCPP_NO_EXCEPTIONS 2279 } 2280 catch (...) 2281 { 2282 if (__is_long()) 2283 __alloc_traits::deallocate(__alloc(), __get_long_pointer(), __get_long_cap()); 2284 throw; 2285 } 2286#endif // _LIBCPP_NO_EXCEPTIONS 2287} 2288 2289template <class _CharT, class _Traits, class _Allocator> 2290template<class _InputIterator, class> 2291inline _LIBCPP_CONSTEXPR_AFTER_CXX17 2292basic_string<_CharT, _Traits, _Allocator>::basic_string(_InputIterator __first, _InputIterator __last) 2293 : __r_(__default_init_tag(), __default_init_tag()) 2294{ 2295 __init(__first, __last); 2296 std::__debug_db_insert_c(this); 2297} 2298 2299template <class _CharT, class _Traits, class _Allocator> 2300template<class _InputIterator, class> 2301inline _LIBCPP_CONSTEXPR_AFTER_CXX17 2302basic_string<_CharT, _Traits, _Allocator>::basic_string(_InputIterator __first, _InputIterator __last, 2303 const allocator_type& __a) 2304 : __r_(__default_init_tag(), __a) 2305{ 2306 __init(__first, __last); 2307 std::__debug_db_insert_c(this); 2308} 2309 2310#ifndef _LIBCPP_CXX03_LANG 2311 2312template <class _CharT, class _Traits, class _Allocator> 2313inline _LIBCPP_CONSTEXPR_AFTER_CXX17 2314basic_string<_CharT, _Traits, _Allocator>::basic_string( 2315 initializer_list<_CharT> __il) 2316 : __r_(__default_init_tag(), __default_init_tag()) 2317{ 2318 __init(__il.begin(), __il.end()); 2319 std::__debug_db_insert_c(this); 2320} 2321 2322template <class _CharT, class _Traits, class _Allocator> 2323inline _LIBCPP_CONSTEXPR_AFTER_CXX17 2324basic_string<_CharT, _Traits, _Allocator>::basic_string( 2325 initializer_list<_CharT> __il, const _Allocator& __a) 2326 : __r_(__default_init_tag(), __a) 2327{ 2328 __init(__il.begin(), __il.end()); 2329 std::__debug_db_insert_c(this); 2330} 2331 2332#endif // _LIBCPP_CXX03_LANG 2333 2334template <class _CharT, class _Traits, class _Allocator> 2335_LIBCPP_CONSTEXPR_AFTER_CXX17 2336basic_string<_CharT, _Traits, _Allocator>::~basic_string() 2337{ 2338 std::__debug_db_erase_c(this); 2339 if (__is_long()) 2340 __alloc_traits::deallocate(__alloc(), __get_long_pointer(), __get_long_cap()); 2341} 2342 2343template <class _CharT, class _Traits, class _Allocator> 2344_LIBCPP_CONSTEXPR_AFTER_CXX17 2345void 2346basic_string<_CharT, _Traits, _Allocator>::__grow_by_and_replace 2347 (size_type __old_cap, size_type __delta_cap, size_type __old_sz, 2348 size_type __n_copy, size_type __n_del, size_type __n_add, const value_type* __p_new_stuff) 2349{ 2350 size_type __ms = max_size(); 2351 if (__delta_cap > __ms - __old_cap - 1) 2352 __throw_length_error(); 2353 pointer __old_p = __get_pointer(); 2354 size_type __cap = __old_cap < __ms / 2 - __alignment ? 2355 __recommend(std::max(__old_cap + __delta_cap, 2 * __old_cap)) : 2356 __ms - 1; 2357 auto __allocation = std::__allocate_at_least(__alloc(), __cap + 1); 2358 pointer __p = __allocation.ptr; 2359 __begin_lifetime(__p, __allocation.count); 2360 __invalidate_all_iterators(); 2361 if (__n_copy != 0) 2362 traits_type::copy(std::__to_address(__p), 2363 std::__to_address(__old_p), __n_copy); 2364 if (__n_add != 0) 2365 traits_type::copy(std::__to_address(__p) + __n_copy, __p_new_stuff, __n_add); 2366 size_type __sec_cp_sz = __old_sz - __n_del - __n_copy; 2367 if (__sec_cp_sz != 0) 2368 traits_type::copy(std::__to_address(__p) + __n_copy + __n_add, 2369 std::__to_address(__old_p) + __n_copy + __n_del, __sec_cp_sz); 2370 if (__old_cap+1 != __min_cap || __libcpp_is_constant_evaluated()) 2371 __alloc_traits::deallocate(__alloc(), __old_p, __old_cap+1); 2372 __set_long_pointer(__p); 2373 __set_long_cap(__allocation.count); 2374 __old_sz = __n_copy + __n_add + __sec_cp_sz; 2375 __set_long_size(__old_sz); 2376 traits_type::assign(__p[__old_sz], value_type()); 2377} 2378 2379template <class _CharT, class _Traits, class _Allocator> 2380void 2381_LIBCPP_CONSTEXPR_AFTER_CXX17 2382basic_string<_CharT, _Traits, _Allocator>::__grow_by(size_type __old_cap, size_type __delta_cap, size_type __old_sz, 2383 size_type __n_copy, size_type __n_del, size_type __n_add) 2384{ 2385 size_type __ms = max_size(); 2386 if (__delta_cap > __ms - __old_cap) 2387 __throw_length_error(); 2388 pointer __old_p = __get_pointer(); 2389 size_type __cap = __old_cap < __ms / 2 - __alignment ? 2390 __recommend(std::max(__old_cap + __delta_cap, 2 * __old_cap)) : 2391 __ms - 1; 2392 auto __allocation = std::__allocate_at_least(__alloc(), __cap + 1); 2393 pointer __p = __allocation.ptr; 2394 __begin_lifetime(__p, __allocation.count); 2395 __invalidate_all_iterators(); 2396 if (__n_copy != 0) 2397 traits_type::copy(std::__to_address(__p), 2398 std::__to_address(__old_p), __n_copy); 2399 size_type __sec_cp_sz = __old_sz - __n_del - __n_copy; 2400 if (__sec_cp_sz != 0) 2401 traits_type::copy(std::__to_address(__p) + __n_copy + __n_add, 2402 std::__to_address(__old_p) + __n_copy + __n_del, 2403 __sec_cp_sz); 2404 if (__libcpp_is_constant_evaluated() || __old_cap + 1 != __min_cap) 2405 __alloc_traits::deallocate(__alloc(), __old_p, __old_cap + 1); 2406 __set_long_pointer(__p); 2407 __set_long_cap(__allocation.count); 2408} 2409 2410// assign 2411 2412template <class _CharT, class _Traits, class _Allocator> 2413template <bool __is_short> 2414_LIBCPP_CONSTEXPR_AFTER_CXX17 2415basic_string<_CharT, _Traits, _Allocator>& 2416basic_string<_CharT, _Traits, _Allocator>::__assign_no_alias( 2417 const value_type* __s, size_type __n) { 2418 size_type __cap = __is_short ? static_cast<size_type>(__min_cap) : __get_long_cap(); 2419 if (__n < __cap) { 2420 pointer __p = __is_short ? __get_short_pointer() : __get_long_pointer(); 2421 __is_short ? __set_short_size(__n) : __set_long_size(__n); 2422 traits_type::copy(std::__to_address(__p), __s, __n); 2423 traits_type::assign(__p[__n], value_type()); 2424 __invalidate_iterators_past(__n); 2425 } else { 2426 size_type __sz = __is_short ? __get_short_size() : __get_long_size(); 2427 __grow_by_and_replace(__cap - 1, __n - __cap + 1, __sz, 0, __sz, __n, __s); 2428 } 2429 return *this; 2430} 2431 2432template <class _CharT, class _Traits, class _Allocator> 2433_LIBCPP_CONSTEXPR_AFTER_CXX17 2434basic_string<_CharT, _Traits, _Allocator>& 2435basic_string<_CharT, _Traits, _Allocator>::__assign_external( 2436 const value_type* __s, size_type __n) { 2437 size_type __cap = capacity(); 2438 if (__cap >= __n) { 2439 value_type* __p = std::__to_address(__get_pointer()); 2440 traits_type::move(__p, __s, __n); 2441 return __null_terminate_at(__p, __n); 2442 } else { 2443 size_type __sz = size(); 2444 __grow_by_and_replace(__cap, __n - __cap, __sz, 0, __sz, __n, __s); 2445 return *this; 2446 } 2447} 2448 2449template <class _CharT, class _Traits, class _Allocator> 2450_LIBCPP_CONSTEXPR_AFTER_CXX17 2451basic_string<_CharT, _Traits, _Allocator>& 2452basic_string<_CharT, _Traits, _Allocator>::assign(const value_type* __s, size_type __n) 2453{ 2454 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::assign received nullptr"); 2455 return (__builtin_constant_p(__n) && __fits_in_sso(__n)) 2456 ? __assign_short(__s, __n) 2457 : __assign_external(__s, __n); 2458} 2459 2460template <class _CharT, class _Traits, class _Allocator> 2461_LIBCPP_CONSTEXPR_AFTER_CXX17 2462basic_string<_CharT, _Traits, _Allocator>& 2463basic_string<_CharT, _Traits, _Allocator>::assign(size_type __n, value_type __c) 2464{ 2465 size_type __cap = capacity(); 2466 if (__cap < __n) 2467 { 2468 size_type __sz = size(); 2469 __grow_by(__cap, __n - __cap, __sz, 0, __sz); 2470 } 2471 value_type* __p = std::__to_address(__get_pointer()); 2472 traits_type::assign(__p, __n, __c); 2473 return __null_terminate_at(__p, __n); 2474} 2475 2476template <class _CharT, class _Traits, class _Allocator> 2477_LIBCPP_CONSTEXPR_AFTER_CXX17 2478basic_string<_CharT, _Traits, _Allocator>& 2479basic_string<_CharT, _Traits, _Allocator>::operator=(value_type __c) 2480{ 2481 pointer __p; 2482 if (__is_long()) 2483 { 2484 __p = __get_long_pointer(); 2485 __set_long_size(1); 2486 } 2487 else 2488 { 2489 __p = __get_short_pointer(); 2490 __set_short_size(1); 2491 } 2492 traits_type::assign(*__p, __c); 2493 traits_type::assign(*++__p, value_type()); 2494 __invalidate_iterators_past(1); 2495 return *this; 2496} 2497 2498template <class _CharT, class _Traits, class _Allocator> 2499_LIBCPP_CONSTEXPR_AFTER_CXX17 2500basic_string<_CharT, _Traits, _Allocator>& 2501basic_string<_CharT, _Traits, _Allocator>::operator=(const basic_string& __str) 2502{ 2503 if (this != &__str) { 2504 __copy_assign_alloc(__str); 2505 if (!__is_long()) { 2506 if (!__str.__is_long()) { 2507 __r_.first().__r = __str.__r_.first().__r; 2508 } else { 2509 return __assign_no_alias<true>(__str.data(), __str.size()); 2510 } 2511 } else { 2512 return __assign_no_alias<false>(__str.data(), __str.size()); 2513 } 2514 } 2515 return *this; 2516} 2517 2518#ifndef _LIBCPP_CXX03_LANG 2519 2520template <class _CharT, class _Traits, class _Allocator> 2521inline _LIBCPP_CONSTEXPR_AFTER_CXX17 2522void 2523basic_string<_CharT, _Traits, _Allocator>::__move_assign(basic_string& __str, false_type) 2524 _NOEXCEPT_(__alloc_traits::is_always_equal::value) 2525{ 2526 if (__alloc() != __str.__alloc()) 2527 assign(__str); 2528 else 2529 __move_assign(__str, true_type()); 2530} 2531 2532template <class _CharT, class _Traits, class _Allocator> 2533inline _LIBCPP_CONSTEXPR_AFTER_CXX17 2534void 2535basic_string<_CharT, _Traits, _Allocator>::__move_assign(basic_string& __str, true_type) 2536#if _LIBCPP_STD_VER > 14 2537 _NOEXCEPT 2538#else 2539 _NOEXCEPT_(is_nothrow_move_assignable<allocator_type>::value) 2540#endif 2541{ 2542 if (__is_long()) { 2543 __alloc_traits::deallocate(__alloc(), __get_long_pointer(), 2544 __get_long_cap()); 2545#if _LIBCPP_STD_VER <= 14 2546 if (!is_nothrow_move_assignable<allocator_type>::value) { 2547 __set_short_size(0); 2548 traits_type::assign(__get_short_pointer()[0], value_type()); 2549 } 2550#endif 2551 } 2552 __move_assign_alloc(__str); 2553 __r_.first() = __str.__r_.first(); 2554 if (__libcpp_is_constant_evaluated()) { 2555 __str.__default_init(); 2556 } else { 2557 __str.__set_short_size(0); 2558 traits_type::assign(__str.__get_short_pointer()[0], value_type()); 2559 } 2560} 2561 2562template <class _CharT, class _Traits, class _Allocator> 2563inline _LIBCPP_CONSTEXPR_AFTER_CXX17 2564basic_string<_CharT, _Traits, _Allocator>& 2565basic_string<_CharT, _Traits, _Allocator>::operator=(basic_string&& __str) 2566 _NOEXCEPT_((__noexcept_move_assign_container<_Allocator, __alloc_traits>::value)) 2567{ 2568 __move_assign(__str, integral_constant<bool, 2569 __alloc_traits::propagate_on_container_move_assignment::value>()); 2570 return *this; 2571} 2572 2573#endif 2574 2575template <class _CharT, class _Traits, class _Allocator> 2576template<class _InputIterator> 2577_LIBCPP_CONSTEXPR_AFTER_CXX17 2578__enable_if_t 2579< 2580 __is_exactly_cpp17_input_iterator<_InputIterator>::value, 2581 basic_string<_CharT, _Traits, _Allocator>& 2582> 2583basic_string<_CharT, _Traits, _Allocator>::assign(_InputIterator __first, _InputIterator __last) 2584{ 2585 const basic_string __temp(__first, __last, __alloc()); 2586 assign(__temp.data(), __temp.size()); 2587 return *this; 2588} 2589 2590template <class _CharT, class _Traits, class _Allocator> 2591template<class _ForwardIterator> 2592_LIBCPP_CONSTEXPR_AFTER_CXX17 2593__enable_if_t 2594< 2595 __is_cpp17_forward_iterator<_ForwardIterator>::value, 2596 basic_string<_CharT, _Traits, _Allocator>& 2597> 2598basic_string<_CharT, _Traits, _Allocator>::assign(_ForwardIterator __first, _ForwardIterator __last) 2599{ 2600 size_type __cap = capacity(); 2601 size_type __n = __string_is_trivial_iterator<_ForwardIterator>::value ? 2602 static_cast<size_type>(std::distance(__first, __last)) : 0; 2603 2604 if (__string_is_trivial_iterator<_ForwardIterator>::value && 2605 (__cap >= __n || !__addr_in_range(*__first))) 2606 { 2607 if (__cap < __n) 2608 { 2609 size_type __sz = size(); 2610 __grow_by(__cap, __n - __cap, __sz, 0, __sz); 2611 } 2612 pointer __p = __get_pointer(); 2613 for (; __first != __last; ++__p, (void) ++__first) 2614 traits_type::assign(*__p, *__first); 2615 traits_type::assign(*__p, value_type()); 2616 __set_size(__n); 2617 __invalidate_iterators_past(__n); 2618 } 2619 else 2620 { 2621 const basic_string __temp(__first, __last, __alloc()); 2622 assign(__temp.data(), __temp.size()); 2623 } 2624 return *this; 2625} 2626 2627template <class _CharT, class _Traits, class _Allocator> 2628_LIBCPP_CONSTEXPR_AFTER_CXX17 2629basic_string<_CharT, _Traits, _Allocator>& 2630basic_string<_CharT, _Traits, _Allocator>::assign(const basic_string& __str, size_type __pos, size_type __n) 2631{ 2632 size_type __sz = __str.size(); 2633 if (__pos > __sz) 2634 __throw_out_of_range(); 2635 return assign(__str.data() + __pos, std::min(__n, __sz - __pos)); 2636} 2637 2638template <class _CharT, class _Traits, class _Allocator> 2639template <class _Tp> 2640_LIBCPP_CONSTEXPR_AFTER_CXX17 2641__enable_if_t 2642< 2643 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value 2644 && !__is_same_uncvref<_Tp, basic_string<_CharT, _Traits, _Allocator> >::value, 2645 basic_string<_CharT, _Traits, _Allocator>& 2646> 2647basic_string<_CharT, _Traits, _Allocator>::assign(const _Tp & __t, size_type __pos, size_type __n) 2648{ 2649 __self_view __sv = __t; 2650 size_type __sz = __sv.size(); 2651 if (__pos > __sz) 2652 __throw_out_of_range(); 2653 return assign(__sv.data() + __pos, std::min(__n, __sz - __pos)); 2654} 2655 2656 2657template <class _CharT, class _Traits, class _Allocator> 2658_LIBCPP_CONSTEXPR_AFTER_CXX17 2659basic_string<_CharT, _Traits, _Allocator>& 2660basic_string<_CharT, _Traits, _Allocator>::__assign_external(const value_type* __s) { 2661 return __assign_external(__s, traits_type::length(__s)); 2662} 2663 2664template <class _CharT, class _Traits, class _Allocator> 2665_LIBCPP_CONSTEXPR_AFTER_CXX17 2666basic_string<_CharT, _Traits, _Allocator>& 2667basic_string<_CharT, _Traits, _Allocator>::assign(const value_type* __s) 2668{ 2669 _LIBCPP_ASSERT(__s != nullptr, "string::assign received nullptr"); 2670 return __builtin_constant_p(*__s) 2671 ? (__fits_in_sso(traits_type::length(__s)) 2672 ? __assign_short(__s, traits_type::length(__s)) 2673 : __assign_external(__s, traits_type::length(__s))) 2674 : __assign_external(__s); 2675} 2676// append 2677 2678template <class _CharT, class _Traits, class _Allocator> 2679_LIBCPP_CONSTEXPR_AFTER_CXX17 2680basic_string<_CharT, _Traits, _Allocator>& 2681basic_string<_CharT, _Traits, _Allocator>::append(const value_type* __s, size_type __n) 2682{ 2683 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::append received nullptr"); 2684 size_type __cap = capacity(); 2685 size_type __sz = size(); 2686 if (__cap - __sz >= __n) 2687 { 2688 if (__n) 2689 { 2690 value_type* __p = std::__to_address(__get_pointer()); 2691 traits_type::copy(__p + __sz, __s, __n); 2692 __sz += __n; 2693 __set_size(__sz); 2694 traits_type::assign(__p[__sz], value_type()); 2695 } 2696 } 2697 else 2698 __grow_by_and_replace(__cap, __sz + __n - __cap, __sz, __sz, 0, __n, __s); 2699 return *this; 2700} 2701 2702template <class _CharT, class _Traits, class _Allocator> 2703_LIBCPP_CONSTEXPR_AFTER_CXX17 2704basic_string<_CharT, _Traits, _Allocator>& 2705basic_string<_CharT, _Traits, _Allocator>::append(size_type __n, value_type __c) 2706{ 2707 if (__n) 2708 { 2709 size_type __cap = capacity(); 2710 size_type __sz = size(); 2711 if (__cap - __sz < __n) 2712 __grow_by(__cap, __sz + __n - __cap, __sz, __sz, 0); 2713 pointer __p = __get_pointer(); 2714 traits_type::assign(std::__to_address(__p) + __sz, __n, __c); 2715 __sz += __n; 2716 __set_size(__sz); 2717 traits_type::assign(__p[__sz], value_type()); 2718 } 2719 return *this; 2720} 2721 2722template <class _CharT, class _Traits, class _Allocator> 2723_LIBCPP_CONSTEXPR_AFTER_CXX17 inline void 2724basic_string<_CharT, _Traits, _Allocator>::__append_default_init(size_type __n) 2725{ 2726 if (__n) 2727 { 2728 size_type __cap = capacity(); 2729 size_type __sz = size(); 2730 if (__cap - __sz < __n) 2731 __grow_by(__cap, __sz + __n - __cap, __sz, __sz, 0); 2732 pointer __p = __get_pointer(); 2733 __sz += __n; 2734 __set_size(__sz); 2735 traits_type::assign(__p[__sz], value_type()); 2736 } 2737} 2738 2739template <class _CharT, class _Traits, class _Allocator> 2740_LIBCPP_CONSTEXPR_AFTER_CXX17 2741void 2742basic_string<_CharT, _Traits, _Allocator>::push_back(value_type __c) 2743{ 2744 bool __is_short = !__is_long(); 2745 size_type __cap; 2746 size_type __sz; 2747 if (__is_short) 2748 { 2749 __cap = __min_cap - 1; 2750 __sz = __get_short_size(); 2751 } 2752 else 2753 { 2754 __cap = __get_long_cap() - 1; 2755 __sz = __get_long_size(); 2756 } 2757 if (__sz == __cap) 2758 { 2759 __grow_by(__cap, 1, __sz, __sz, 0); 2760 __is_short = false; // the string is always long after __grow_by 2761 } 2762 pointer __p = __get_pointer(); 2763 if (__is_short) 2764 { 2765 __p = __get_short_pointer() + __sz; 2766 __set_short_size(__sz+1); 2767 } 2768 else 2769 { 2770 __p = __get_long_pointer() + __sz; 2771 __set_long_size(__sz+1); 2772 } 2773 traits_type::assign(*__p, __c); 2774 traits_type::assign(*++__p, value_type()); 2775} 2776 2777template <class _CharT, class _Traits, class _Allocator> 2778template<class _ForwardIterator> 2779_LIBCPP_CONSTEXPR_AFTER_CXX17 2780__enable_if_t 2781< 2782 __is_cpp17_forward_iterator<_ForwardIterator>::value, 2783 basic_string<_CharT, _Traits, _Allocator>& 2784> 2785basic_string<_CharT, _Traits, _Allocator>::append( 2786 _ForwardIterator __first, _ForwardIterator __last) 2787{ 2788 size_type __sz = size(); 2789 size_type __cap = capacity(); 2790 size_type __n = static_cast<size_type>(std::distance(__first, __last)); 2791 if (__n) 2792 { 2793 if (__string_is_trivial_iterator<_ForwardIterator>::value && 2794 !__addr_in_range(*__first)) 2795 { 2796 if (__cap - __sz < __n) 2797 __grow_by(__cap, __sz + __n - __cap, __sz, __sz, 0); 2798 pointer __p = __get_pointer() + __sz; 2799 for (; __first != __last; ++__p, (void) ++__first) 2800 traits_type::assign(*__p, *__first); 2801 traits_type::assign(*__p, value_type()); 2802 __set_size(__sz + __n); 2803 } 2804 else 2805 { 2806 const basic_string __temp(__first, __last, __alloc()); 2807 append(__temp.data(), __temp.size()); 2808 } 2809 } 2810 return *this; 2811} 2812 2813template <class _CharT, class _Traits, class _Allocator> 2814inline _LIBCPP_CONSTEXPR_AFTER_CXX17 2815basic_string<_CharT, _Traits, _Allocator>& 2816basic_string<_CharT, _Traits, _Allocator>::append(const basic_string& __str) 2817{ 2818 return append(__str.data(), __str.size()); 2819} 2820 2821template <class _CharT, class _Traits, class _Allocator> 2822_LIBCPP_CONSTEXPR_AFTER_CXX17 2823basic_string<_CharT, _Traits, _Allocator>& 2824basic_string<_CharT, _Traits, _Allocator>::append(const basic_string& __str, size_type __pos, size_type __n) 2825{ 2826 size_type __sz = __str.size(); 2827 if (__pos > __sz) 2828 __throw_out_of_range(); 2829 return append(__str.data() + __pos, std::min(__n, __sz - __pos)); 2830} 2831 2832template <class _CharT, class _Traits, class _Allocator> 2833template <class _Tp> 2834_LIBCPP_CONSTEXPR_AFTER_CXX17 2835 __enable_if_t 2836 < 2837 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value && !__is_same_uncvref<_Tp, basic_string<_CharT, _Traits, _Allocator> >::value, 2838 basic_string<_CharT, _Traits, _Allocator>& 2839 > 2840basic_string<_CharT, _Traits, _Allocator>::append(const _Tp & __t, size_type __pos, size_type __n) 2841{ 2842 __self_view __sv = __t; 2843 size_type __sz = __sv.size(); 2844 if (__pos > __sz) 2845 __throw_out_of_range(); 2846 return append(__sv.data() + __pos, std::min(__n, __sz - __pos)); 2847} 2848 2849template <class _CharT, class _Traits, class _Allocator> 2850_LIBCPP_CONSTEXPR_AFTER_CXX17 2851basic_string<_CharT, _Traits, _Allocator>& 2852basic_string<_CharT, _Traits, _Allocator>::append(const value_type* __s) 2853{ 2854 _LIBCPP_ASSERT(__s != nullptr, "string::append received nullptr"); 2855 return append(__s, traits_type::length(__s)); 2856} 2857 2858// insert 2859 2860template <class _CharT, class _Traits, class _Allocator> 2861_LIBCPP_CONSTEXPR_AFTER_CXX17 2862basic_string<_CharT, _Traits, _Allocator>& 2863basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos, const value_type* __s, size_type __n) 2864{ 2865 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::insert received nullptr"); 2866 size_type __sz = size(); 2867 if (__pos > __sz) 2868 __throw_out_of_range(); 2869 size_type __cap = capacity(); 2870 if (__libcpp_is_constant_evaluated()) { 2871 if (__cap - __sz >= __n) 2872 __grow_by_and_replace(__cap, 0, __sz, __pos, 0, __n, __s); 2873 else 2874 __grow_by_and_replace(__cap, __sz + __n - __cap, __sz, __pos, 0, __n, __s); 2875 return *this; 2876 } 2877 if (__cap - __sz >= __n) 2878 { 2879 if (__n) 2880 { 2881 value_type* __p = std::__to_address(__get_pointer()); 2882 size_type __n_move = __sz - __pos; 2883 if (__n_move != 0) 2884 { 2885 if (__p + __pos <= __s && __s < __p + __sz) 2886 __s += __n; 2887 traits_type::move(__p + __pos + __n, __p + __pos, __n_move); 2888 } 2889 traits_type::move(__p + __pos, __s, __n); 2890 __sz += __n; 2891 __set_size(__sz); 2892 traits_type::assign(__p[__sz], value_type()); 2893 } 2894 } 2895 else 2896 __grow_by_and_replace(__cap, __sz + __n - __cap, __sz, __pos, 0, __n, __s); 2897 return *this; 2898} 2899 2900template <class _CharT, class _Traits, class _Allocator> 2901_LIBCPP_CONSTEXPR_AFTER_CXX17 2902basic_string<_CharT, _Traits, _Allocator>& 2903basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos, size_type __n, value_type __c) 2904{ 2905 size_type __sz = size(); 2906 if (__pos > __sz) 2907 __throw_out_of_range(); 2908 if (__n) 2909 { 2910 size_type __cap = capacity(); 2911 value_type* __p; 2912 if (__cap - __sz >= __n) 2913 { 2914 __p = std::__to_address(__get_pointer()); 2915 size_type __n_move = __sz - __pos; 2916 if (__n_move != 0) 2917 traits_type::move(__p + __pos + __n, __p + __pos, __n_move); 2918 } 2919 else 2920 { 2921 __grow_by(__cap, __sz + __n - __cap, __sz, __pos, 0, __n); 2922 __p = std::__to_address(__get_long_pointer()); 2923 } 2924 traits_type::assign(__p + __pos, __n, __c); 2925 __sz += __n; 2926 __set_size(__sz); 2927 traits_type::assign(__p[__sz], value_type()); 2928 } 2929 return *this; 2930} 2931 2932template <class _CharT, class _Traits, class _Allocator> 2933template<class _InputIterator> 2934_LIBCPP_CONSTEXPR_AFTER_CXX17 2935__enable_if_t 2936< 2937 __is_exactly_cpp17_input_iterator<_InputIterator>::value, 2938 typename basic_string<_CharT, _Traits, _Allocator>::iterator 2939> 2940basic_string<_CharT, _Traits, _Allocator>::insert(const_iterator __pos, _InputIterator __first, _InputIterator __last) 2941{ 2942 _LIBCPP_DEBUG_ASSERT(__get_const_db()->__find_c_from_i(&__pos) == this, 2943 "string::insert(iterator, range) called with an iterator not" 2944 " referring to this string"); 2945 const basic_string __temp(__first, __last, __alloc()); 2946 return insert(__pos, __temp.data(), __temp.data() + __temp.size()); 2947} 2948 2949template <class _CharT, class _Traits, class _Allocator> 2950template<class _ForwardIterator> 2951_LIBCPP_CONSTEXPR_AFTER_CXX17 2952__enable_if_t 2953< 2954 __is_cpp17_forward_iterator<_ForwardIterator>::value, 2955 typename basic_string<_CharT, _Traits, _Allocator>::iterator 2956> 2957basic_string<_CharT, _Traits, _Allocator>::insert(const_iterator __pos, _ForwardIterator __first, _ForwardIterator __last) 2958{ 2959 _LIBCPP_DEBUG_ASSERT(__get_const_db()->__find_c_from_i(&__pos) == this, 2960 "string::insert(iterator, range) called with an iterator not referring to this string"); 2961 2962 size_type __ip = static_cast<size_type>(__pos - begin()); 2963 size_type __n = static_cast<size_type>(std::distance(__first, __last)); 2964 if (__n == 0) 2965 return begin() + __ip; 2966 2967 if (__string_is_trivial_iterator<_ForwardIterator>::value && !__addr_in_range(*__first)) 2968 { 2969 return __insert_from_safe_copy(__n, __ip, __first, __last); 2970 } 2971 else 2972 { 2973 const basic_string __temp(__first, __last, __alloc()); 2974 return __insert_from_safe_copy(__n, __ip, __temp.begin(), __temp.end()); 2975 } 2976} 2977 2978template <class _CharT, class _Traits, class _Allocator> 2979inline _LIBCPP_CONSTEXPR_AFTER_CXX17 2980basic_string<_CharT, _Traits, _Allocator>& 2981basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos1, const basic_string& __str) 2982{ 2983 return insert(__pos1, __str.data(), __str.size()); 2984} 2985 2986template <class _CharT, class _Traits, class _Allocator> 2987_LIBCPP_CONSTEXPR_AFTER_CXX17 2988basic_string<_CharT, _Traits, _Allocator>& 2989basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos1, const basic_string& __str, 2990 size_type __pos2, size_type __n) 2991{ 2992 size_type __str_sz = __str.size(); 2993 if (__pos2 > __str_sz) 2994 __throw_out_of_range(); 2995 return insert(__pos1, __str.data() + __pos2, std::min(__n, __str_sz - __pos2)); 2996} 2997 2998template <class _CharT, class _Traits, class _Allocator> 2999template <class _Tp> 3000_LIBCPP_CONSTEXPR_AFTER_CXX17 3001__enable_if_t 3002< 3003 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value && !__is_same_uncvref<_Tp, basic_string<_CharT, _Traits, _Allocator> >::value, 3004 basic_string<_CharT, _Traits, _Allocator>& 3005> 3006basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos1, const _Tp& __t, 3007 size_type __pos2, size_type __n) 3008{ 3009 __self_view __sv = __t; 3010 size_type __str_sz = __sv.size(); 3011 if (__pos2 > __str_sz) 3012 __throw_out_of_range(); 3013 return insert(__pos1, __sv.data() + __pos2, std::min(__n, __str_sz - __pos2)); 3014} 3015 3016template <class _CharT, class _Traits, class _Allocator> 3017_LIBCPP_CONSTEXPR_AFTER_CXX17 3018basic_string<_CharT, _Traits, _Allocator>& 3019basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos, const value_type* __s) 3020{ 3021 _LIBCPP_ASSERT(__s != nullptr, "string::insert received nullptr"); 3022 return insert(__pos, __s, traits_type::length(__s)); 3023} 3024 3025template <class _CharT, class _Traits, class _Allocator> 3026_LIBCPP_CONSTEXPR_AFTER_CXX17 3027typename basic_string<_CharT, _Traits, _Allocator>::iterator 3028basic_string<_CharT, _Traits, _Allocator>::insert(const_iterator __pos, value_type __c) 3029{ 3030 _LIBCPP_DEBUG_ASSERT(__get_const_db()->__find_c_from_i(&__pos) == this, 3031 "string::insert(iterator, character) called with an iterator not" 3032 " referring to this string"); 3033 3034 size_type __ip = static_cast<size_type>(__pos - begin()); 3035 size_type __sz = size(); 3036 size_type __cap = capacity(); 3037 value_type* __p; 3038 if (__cap == __sz) 3039 { 3040 __grow_by(__cap, 1, __sz, __ip, 0, 1); 3041 __p = std::__to_address(__get_long_pointer()); 3042 } 3043 else 3044 { 3045 __p = std::__to_address(__get_pointer()); 3046 size_type __n_move = __sz - __ip; 3047 if (__n_move != 0) 3048 traits_type::move(__p + __ip + 1, __p + __ip, __n_move); 3049 } 3050 traits_type::assign(__p[__ip], __c); 3051 traits_type::assign(__p[++__sz], value_type()); 3052 __set_size(__sz); 3053 return begin() + static_cast<difference_type>(__ip); 3054} 3055 3056template <class _CharT, class _Traits, class _Allocator> 3057inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3058typename basic_string<_CharT, _Traits, _Allocator>::iterator 3059basic_string<_CharT, _Traits, _Allocator>::insert(const_iterator __pos, size_type __n, value_type __c) 3060{ 3061 _LIBCPP_DEBUG_ASSERT(__get_const_db()->__find_c_from_i(&__pos) == this, 3062 "string::insert(iterator, n, value) called with an iterator not" 3063 " referring to this string"); 3064 difference_type __p = __pos - begin(); 3065 insert(static_cast<size_type>(__p), __n, __c); 3066 return begin() + __p; 3067} 3068 3069// replace 3070 3071template <class _CharT, class _Traits, class _Allocator> 3072_LIBCPP_CONSTEXPR_AFTER_CXX17 3073basic_string<_CharT, _Traits, _Allocator>& 3074basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos, size_type __n1, const value_type* __s, size_type __n2) 3075 _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK 3076{ 3077 _LIBCPP_ASSERT(__n2 == 0 || __s != nullptr, "string::replace received nullptr"); 3078 size_type __sz = size(); 3079 if (__pos > __sz) 3080 __throw_out_of_range(); 3081 __n1 = std::min(__n1, __sz - __pos); 3082 size_type __cap = capacity(); 3083 if (__cap - __sz + __n1 >= __n2) 3084 { 3085 if (__libcpp_is_constant_evaluated()) { 3086 __grow_by_and_replace(__cap, 0, __sz, __pos, __n1, __n2, __s); 3087 return *this; 3088 } 3089 value_type* __p = std::__to_address(__get_pointer()); 3090 if (__n1 != __n2) 3091 { 3092 size_type __n_move = __sz - __pos - __n1; 3093 if (__n_move != 0) 3094 { 3095 if (__n1 > __n2) 3096 { 3097 traits_type::move(__p + __pos, __s, __n2); 3098 traits_type::move(__p + __pos + __n2, __p + __pos + __n1, __n_move); 3099 return __null_terminate_at(__p, __sz + (__n2 - __n1)); 3100 } 3101 if (__p + __pos < __s && __s < __p + __sz) 3102 { 3103 if (__p + __pos + __n1 <= __s) 3104 __s += __n2 - __n1; 3105 else // __p + __pos < __s < __p + __pos + __n1 3106 { 3107 traits_type::move(__p + __pos, __s, __n1); 3108 __pos += __n1; 3109 __s += __n2; 3110 __n2 -= __n1; 3111 __n1 = 0; 3112 } 3113 } 3114 traits_type::move(__p + __pos + __n2, __p + __pos + __n1, __n_move); 3115 } 3116 } 3117 traits_type::move(__p + __pos, __s, __n2); 3118 return __null_terminate_at(__p, __sz + (__n2 - __n1)); 3119 } 3120 else 3121 __grow_by_and_replace(__cap, __sz - __n1 + __n2 - __cap, __sz, __pos, __n1, __n2, __s); 3122 return *this; 3123} 3124 3125template <class _CharT, class _Traits, class _Allocator> 3126_LIBCPP_CONSTEXPR_AFTER_CXX17 3127basic_string<_CharT, _Traits, _Allocator>& 3128basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos, size_type __n1, size_type __n2, value_type __c) 3129{ 3130 size_type __sz = size(); 3131 if (__pos > __sz) 3132 __throw_out_of_range(); 3133 __n1 = std::min(__n1, __sz - __pos); 3134 size_type __cap = capacity(); 3135 value_type* __p; 3136 if (__cap - __sz + __n1 >= __n2) 3137 { 3138 __p = std::__to_address(__get_pointer()); 3139 if (__n1 != __n2) 3140 { 3141 size_type __n_move = __sz - __pos - __n1; 3142 if (__n_move != 0) 3143 traits_type::move(__p + __pos + __n2, __p + __pos + __n1, __n_move); 3144 } 3145 } 3146 else 3147 { 3148 __grow_by(__cap, __sz - __n1 + __n2 - __cap, __sz, __pos, __n1, __n2); 3149 __p = std::__to_address(__get_long_pointer()); 3150 } 3151 traits_type::assign(__p + __pos, __n2, __c); 3152 return __null_terminate_at(__p, __sz - (__n1 - __n2)); 3153} 3154 3155template <class _CharT, class _Traits, class _Allocator> 3156template<class _InputIterator> 3157_LIBCPP_CONSTEXPR_AFTER_CXX17 3158__enable_if_t 3159< 3160 __is_cpp17_input_iterator<_InputIterator>::value, 3161 basic_string<_CharT, _Traits, _Allocator>& 3162> 3163basic_string<_CharT, _Traits, _Allocator>::replace(const_iterator __i1, const_iterator __i2, 3164 _InputIterator __j1, _InputIterator __j2) 3165{ 3166 const basic_string __temp(__j1, __j2, __alloc()); 3167 return replace(__i1, __i2, __temp); 3168} 3169 3170template <class _CharT, class _Traits, class _Allocator> 3171inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3172basic_string<_CharT, _Traits, _Allocator>& 3173basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos1, size_type __n1, const basic_string& __str) 3174{ 3175 return replace(__pos1, __n1, __str.data(), __str.size()); 3176} 3177 3178template <class _CharT, class _Traits, class _Allocator> 3179_LIBCPP_CONSTEXPR_AFTER_CXX17 3180basic_string<_CharT, _Traits, _Allocator>& 3181basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos1, size_type __n1, const basic_string& __str, 3182 size_type __pos2, size_type __n2) 3183{ 3184 size_type __str_sz = __str.size(); 3185 if (__pos2 > __str_sz) 3186 __throw_out_of_range(); 3187 return replace(__pos1, __n1, __str.data() + __pos2, std::min(__n2, __str_sz - __pos2)); 3188} 3189 3190template <class _CharT, class _Traits, class _Allocator> 3191template <class _Tp> 3192_LIBCPP_CONSTEXPR_AFTER_CXX17 3193__enable_if_t 3194< 3195 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value && !__is_same_uncvref<_Tp, basic_string<_CharT, _Traits, _Allocator> >::value, 3196 basic_string<_CharT, _Traits, _Allocator>& 3197> 3198basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos1, size_type __n1, const _Tp& __t, 3199 size_type __pos2, size_type __n2) 3200{ 3201 __self_view __sv = __t; 3202 size_type __str_sz = __sv.size(); 3203 if (__pos2 > __str_sz) 3204 __throw_out_of_range(); 3205 return replace(__pos1, __n1, __sv.data() + __pos2, std::min(__n2, __str_sz - __pos2)); 3206} 3207 3208template <class _CharT, class _Traits, class _Allocator> 3209_LIBCPP_CONSTEXPR_AFTER_CXX17 3210basic_string<_CharT, _Traits, _Allocator>& 3211basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos, size_type __n1, const value_type* __s) 3212{ 3213 _LIBCPP_ASSERT(__s != nullptr, "string::replace received nullptr"); 3214 return replace(__pos, __n1, __s, traits_type::length(__s)); 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 basic_string& __str) 3221{ 3222 return replace(static_cast<size_type>(__i1 - begin()), static_cast<size_type>(__i2 - __i1), 3223 __str.data(), __str.size()); 3224} 3225 3226template <class _CharT, class _Traits, class _Allocator> 3227inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3228basic_string<_CharT, _Traits, _Allocator>& 3229basic_string<_CharT, _Traits, _Allocator>::replace(const_iterator __i1, const_iterator __i2, const value_type* __s, size_type __n) 3230{ 3231 return replace(static_cast<size_type>(__i1 - begin()), static_cast<size_type>(__i2 - __i1), __s, __n); 3232} 3233 3234template <class _CharT, class _Traits, class _Allocator> 3235inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3236basic_string<_CharT, _Traits, _Allocator>& 3237basic_string<_CharT, _Traits, _Allocator>::replace(const_iterator __i1, const_iterator __i2, const value_type* __s) 3238{ 3239 return replace(static_cast<size_type>(__i1 - begin()), static_cast<size_type>(__i2 - __i1), __s); 3240} 3241 3242template <class _CharT, class _Traits, class _Allocator> 3243inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3244basic_string<_CharT, _Traits, _Allocator>& 3245basic_string<_CharT, _Traits, _Allocator>::replace(const_iterator __i1, const_iterator __i2, size_type __n, value_type __c) 3246{ 3247 return replace(static_cast<size_type>(__i1 - begin()), static_cast<size_type>(__i2 - __i1), __n, __c); 3248} 3249 3250// erase 3251 3252// 'externally instantiated' erase() implementation, called when __n != npos. 3253// Does not check __pos against size() 3254template <class _CharT, class _Traits, class _Allocator> 3255_LIBCPP_CONSTEXPR_AFTER_CXX17 3256void 3257basic_string<_CharT, _Traits, _Allocator>::__erase_external_with_move( 3258 size_type __pos, size_type __n) 3259{ 3260 if (__n) 3261 { 3262 size_type __sz = size(); 3263 value_type* __p = std::__to_address(__get_pointer()); 3264 __n = std::min(__n, __sz - __pos); 3265 size_type __n_move = __sz - __pos - __n; 3266 if (__n_move != 0) 3267 traits_type::move(__p + __pos, __p + __pos + __n, __n_move); 3268 __null_terminate_at(__p, __sz - __n); 3269 } 3270} 3271 3272template <class _CharT, class _Traits, class _Allocator> 3273_LIBCPP_CONSTEXPR_AFTER_CXX17 3274basic_string<_CharT, _Traits, _Allocator>& 3275basic_string<_CharT, _Traits, _Allocator>::erase(size_type __pos, 3276 size_type __n) { 3277 if (__pos > size()) 3278 __throw_out_of_range(); 3279 if (__n == npos) { 3280 __erase_to_end(__pos); 3281 } else { 3282 __erase_external_with_move(__pos, __n); 3283 } 3284 return *this; 3285} 3286 3287template <class _CharT, class _Traits, class _Allocator> 3288inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3289typename basic_string<_CharT, _Traits, _Allocator>::iterator 3290basic_string<_CharT, _Traits, _Allocator>::erase(const_iterator __pos) 3291{ 3292 _LIBCPP_DEBUG_ASSERT(__get_const_db()->__find_c_from_i(&__pos) == this, 3293 "string::erase(iterator) called with an iterator not" 3294 " referring to this string"); 3295 3296 _LIBCPP_ASSERT(__pos != end(), "string::erase(iterator) called with a non-dereferenceable iterator"); 3297 iterator __b = begin(); 3298 size_type __r = static_cast<size_type>(__pos - __b); 3299 erase(__r, 1); 3300 return __b + static_cast<difference_type>(__r); 3301} 3302 3303template <class _CharT, class _Traits, class _Allocator> 3304inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3305typename basic_string<_CharT, _Traits, _Allocator>::iterator 3306basic_string<_CharT, _Traits, _Allocator>::erase(const_iterator __first, const_iterator __last) 3307{ 3308 _LIBCPP_DEBUG_ASSERT(__get_const_db()->__find_c_from_i(&__first) == this, 3309 "string::erase(iterator, iterator) called with an iterator not" 3310 " referring to this string"); 3311 3312 _LIBCPP_ASSERT(__first <= __last, "string::erase(first, last) called with invalid range"); 3313 iterator __b = begin(); 3314 size_type __r = static_cast<size_type>(__first - __b); 3315 erase(__r, static_cast<size_type>(__last - __first)); 3316 return __b + static_cast<difference_type>(__r); 3317} 3318 3319template <class _CharT, class _Traits, class _Allocator> 3320inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3321void 3322basic_string<_CharT, _Traits, _Allocator>::pop_back() 3323{ 3324 _LIBCPP_ASSERT(!empty(), "string::pop_back(): string is already empty"); 3325 __erase_to_end(size() - 1); 3326} 3327 3328template <class _CharT, class _Traits, class _Allocator> 3329inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3330void 3331basic_string<_CharT, _Traits, _Allocator>::clear() _NOEXCEPT 3332{ 3333 __invalidate_all_iterators(); 3334 if (__is_long()) 3335 { 3336 traits_type::assign(*__get_long_pointer(), value_type()); 3337 __set_long_size(0); 3338 } 3339 else 3340 { 3341 traits_type::assign(*__get_short_pointer(), value_type()); 3342 __set_short_size(0); 3343 } 3344} 3345 3346template <class _CharT, class _Traits, class _Allocator> 3347inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3348void 3349basic_string<_CharT, _Traits, _Allocator>::__erase_to_end(size_type __pos) 3350{ 3351 __null_terminate_at(std::__to_address(__get_pointer()), __pos); 3352} 3353 3354template <class _CharT, class _Traits, class _Allocator> 3355_LIBCPP_CONSTEXPR_AFTER_CXX17 3356void 3357basic_string<_CharT, _Traits, _Allocator>::resize(size_type __n, value_type __c) 3358{ 3359 size_type __sz = size(); 3360 if (__n > __sz) 3361 append(__n - __sz, __c); 3362 else 3363 __erase_to_end(__n); 3364} 3365 3366template <class _CharT, class _Traits, class _Allocator> 3367_LIBCPP_CONSTEXPR_AFTER_CXX17 inline void 3368basic_string<_CharT, _Traits, _Allocator>::__resize_default_init(size_type __n) 3369{ 3370 size_type __sz = size(); 3371 if (__n > __sz) { 3372 __append_default_init(__n - __sz); 3373 } else 3374 __erase_to_end(__n); 3375} 3376 3377template <class _CharT, class _Traits, class _Allocator> 3378inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3379typename basic_string<_CharT, _Traits, _Allocator>::size_type 3380basic_string<_CharT, _Traits, _Allocator>::max_size() const _NOEXCEPT 3381{ 3382 size_type __m = __alloc_traits::max_size(__alloc()); 3383 if (__m <= std::numeric_limits<size_type>::max() / 2) { 3384 return __m - __alignment; 3385 } else { 3386 bool __uses_lsb = __endian_factor == 2; 3387 return __uses_lsb ? __m - __alignment : (__m / 2) - __alignment; 3388 } 3389} 3390 3391template <class _CharT, class _Traits, class _Allocator> 3392_LIBCPP_CONSTEXPR_AFTER_CXX17 3393void 3394basic_string<_CharT, _Traits, _Allocator>::reserve(size_type __requested_capacity) 3395{ 3396 if (__requested_capacity > max_size()) 3397 __throw_length_error(); 3398 3399 // Make sure reserve(n) never shrinks. This is technically only required in C++20 3400 // and later (since P0966R1), however we provide consistent behavior in all Standard 3401 // modes because this function is instantiated in the shared library. 3402 if (__requested_capacity <= capacity()) 3403 return; 3404 3405 size_type __target_capacity = std::max(__requested_capacity, size()); 3406 __target_capacity = __recommend(__target_capacity); 3407 if (__target_capacity == capacity()) return; 3408 3409 __shrink_or_extend(__target_capacity); 3410} 3411 3412template <class _CharT, class _Traits, class _Allocator> 3413inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3414void 3415basic_string<_CharT, _Traits, _Allocator>::shrink_to_fit() _NOEXCEPT 3416{ 3417 size_type __target_capacity = __recommend(size()); 3418 if (__target_capacity == capacity()) return; 3419 3420 __shrink_or_extend(__target_capacity); 3421} 3422 3423template <class _CharT, class _Traits, class _Allocator> 3424inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3425void 3426basic_string<_CharT, _Traits, _Allocator>::__shrink_or_extend(size_type __target_capacity) 3427{ 3428 size_type __cap = capacity(); 3429 size_type __sz = size(); 3430 3431 pointer __new_data, __p; 3432 bool __was_long, __now_long; 3433 if (__fits_in_sso(__target_capacity)) 3434 { 3435 __was_long = true; 3436 __now_long = false; 3437 __new_data = __get_short_pointer(); 3438 __p = __get_long_pointer(); 3439 } 3440 else 3441 { 3442 if (__target_capacity > __cap) { 3443 auto __allocation = std::__allocate_at_least(__alloc(), __target_capacity + 1); 3444 __new_data = __allocation.ptr; 3445 __target_capacity = __allocation.count - 1; 3446 } 3447 else 3448 { 3449 #ifndef _LIBCPP_NO_EXCEPTIONS 3450 try 3451 { 3452 #endif // _LIBCPP_NO_EXCEPTIONS 3453 auto __allocation = std::__allocate_at_least(__alloc(), __target_capacity + 1); 3454 __new_data = __allocation.ptr; 3455 __target_capacity = __allocation.count - 1; 3456 #ifndef _LIBCPP_NO_EXCEPTIONS 3457 } 3458 catch (...) 3459 { 3460 return; 3461 } 3462 #else // _LIBCPP_NO_EXCEPTIONS 3463 if (__new_data == nullptr) 3464 return; 3465 #endif // _LIBCPP_NO_EXCEPTIONS 3466 } 3467 __begin_lifetime(__new_data, __target_capacity + 1); 3468 __now_long = true; 3469 __was_long = __is_long(); 3470 __p = __get_pointer(); 3471 } 3472 traits_type::copy(std::__to_address(__new_data), 3473 std::__to_address(__p), size()+1); 3474 if (__was_long) 3475 __alloc_traits::deallocate(__alloc(), __p, __cap+1); 3476 if (__now_long) 3477 { 3478 __set_long_cap(__target_capacity+1); 3479 __set_long_size(__sz); 3480 __set_long_pointer(__new_data); 3481 } 3482 else 3483 __set_short_size(__sz); 3484 __invalidate_all_iterators(); 3485} 3486 3487template <class _CharT, class _Traits, class _Allocator> 3488inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3489typename basic_string<_CharT, _Traits, _Allocator>::const_reference 3490basic_string<_CharT, _Traits, _Allocator>::operator[](size_type __pos) const _NOEXCEPT 3491{ 3492 _LIBCPP_ASSERT(__pos <= size(), "string index out of bounds"); 3493 return *(data() + __pos); 3494} 3495 3496template <class _CharT, class _Traits, class _Allocator> 3497inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3498typename basic_string<_CharT, _Traits, _Allocator>::reference 3499basic_string<_CharT, _Traits, _Allocator>::operator[](size_type __pos) _NOEXCEPT 3500{ 3501 _LIBCPP_ASSERT(__pos <= size(), "string index out of bounds"); 3502 return *(__get_pointer() + __pos); 3503} 3504 3505template <class _CharT, class _Traits, class _Allocator> 3506_LIBCPP_CONSTEXPR_AFTER_CXX17 3507typename basic_string<_CharT, _Traits, _Allocator>::const_reference 3508basic_string<_CharT, _Traits, _Allocator>::at(size_type __n) const 3509{ 3510 if (__n >= size()) 3511 __throw_out_of_range(); 3512 return (*this)[__n]; 3513} 3514 3515template <class _CharT, class _Traits, class _Allocator> 3516_LIBCPP_CONSTEXPR_AFTER_CXX17 3517typename basic_string<_CharT, _Traits, _Allocator>::reference 3518basic_string<_CharT, _Traits, _Allocator>::at(size_type __n) 3519{ 3520 if (__n >= size()) 3521 __throw_out_of_range(); 3522 return (*this)[__n]; 3523} 3524 3525template <class _CharT, class _Traits, class _Allocator> 3526inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3527typename basic_string<_CharT, _Traits, _Allocator>::reference 3528basic_string<_CharT, _Traits, _Allocator>::front() _NOEXCEPT 3529{ 3530 _LIBCPP_ASSERT(!empty(), "string::front(): string is empty"); 3531 return *__get_pointer(); 3532} 3533 3534template <class _CharT, class _Traits, class _Allocator> 3535inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3536typename basic_string<_CharT, _Traits, _Allocator>::const_reference 3537basic_string<_CharT, _Traits, _Allocator>::front() const _NOEXCEPT 3538{ 3539 _LIBCPP_ASSERT(!empty(), "string::front(): string is empty"); 3540 return *data(); 3541} 3542 3543template <class _CharT, class _Traits, class _Allocator> 3544inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3545typename basic_string<_CharT, _Traits, _Allocator>::reference 3546basic_string<_CharT, _Traits, _Allocator>::back() _NOEXCEPT 3547{ 3548 _LIBCPP_ASSERT(!empty(), "string::back(): string is empty"); 3549 return *(__get_pointer() + size() - 1); 3550} 3551 3552template <class _CharT, class _Traits, class _Allocator> 3553inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3554typename basic_string<_CharT, _Traits, _Allocator>::const_reference 3555basic_string<_CharT, _Traits, _Allocator>::back() const _NOEXCEPT 3556{ 3557 _LIBCPP_ASSERT(!empty(), "string::back(): string is empty"); 3558 return *(data() + size() - 1); 3559} 3560 3561template <class _CharT, class _Traits, class _Allocator> 3562_LIBCPP_CONSTEXPR_AFTER_CXX17 3563typename basic_string<_CharT, _Traits, _Allocator>::size_type 3564basic_string<_CharT, _Traits, _Allocator>::copy(value_type* __s, size_type __n, size_type __pos) const 3565{ 3566 size_type __sz = size(); 3567 if (__pos > __sz) 3568 __throw_out_of_range(); 3569 size_type __rlen = std::min(__n, __sz - __pos); 3570 traits_type::copy(__s, data() + __pos, __rlen); 3571 return __rlen; 3572} 3573 3574template <class _CharT, class _Traits, class _Allocator> 3575inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3576basic_string<_CharT, _Traits, _Allocator> 3577basic_string<_CharT, _Traits, _Allocator>::substr(size_type __pos, size_type __n) const 3578{ 3579 return basic_string(*this, __pos, __n, __alloc()); 3580} 3581 3582template <class _CharT, class _Traits, class _Allocator> 3583inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3584void 3585basic_string<_CharT, _Traits, _Allocator>::swap(basic_string& __str) 3586#if _LIBCPP_STD_VER >= 14 3587 _NOEXCEPT 3588#else 3589 _NOEXCEPT_(!__alloc_traits::propagate_on_container_swap::value || 3590 __is_nothrow_swappable<allocator_type>::value) 3591#endif 3592{ 3593 if (!__is_long()) 3594 std::__debug_db_invalidate_all(this); 3595 if (!__str.__is_long()) 3596 std::__debug_db_invalidate_all(&__str); 3597 std::__debug_db_swap(this, &__str); 3598 3599 _LIBCPP_ASSERT( 3600 __alloc_traits::propagate_on_container_swap::value || 3601 __alloc_traits::is_always_equal::value || 3602 __alloc() == __str.__alloc(), "swapping non-equal allocators"); 3603 std::swap(__r_.first(), __str.__r_.first()); 3604 std::__swap_allocator(__alloc(), __str.__alloc()); 3605} 3606 3607// find 3608 3609template <class _Traits> 3610struct _LIBCPP_HIDDEN __traits_eq 3611{ 3612 typedef typename _Traits::char_type char_type; 3613 _LIBCPP_HIDE_FROM_ABI 3614 bool operator()(const char_type& __x, const char_type& __y) _NOEXCEPT 3615 {return _Traits::eq(__x, __y);} 3616}; 3617 3618template<class _CharT, class _Traits, class _Allocator> 3619_LIBCPP_CONSTEXPR_AFTER_CXX17 3620typename basic_string<_CharT, _Traits, _Allocator>::size_type 3621basic_string<_CharT, _Traits, _Allocator>::find(const value_type* __s, 3622 size_type __pos, 3623 size_type __n) const _NOEXCEPT 3624{ 3625 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::find(): received nullptr"); 3626 return __str_find<value_type, size_type, traits_type, npos> 3627 (data(), size(), __s, __pos, __n); 3628} 3629 3630template<class _CharT, class _Traits, class _Allocator> 3631inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3632typename basic_string<_CharT, _Traits, _Allocator>::size_type 3633basic_string<_CharT, _Traits, _Allocator>::find(const basic_string& __str, 3634 size_type __pos) const _NOEXCEPT 3635{ 3636 return __str_find<value_type, size_type, traits_type, npos> 3637 (data(), size(), __str.data(), __pos, __str.size()); 3638} 3639 3640template<class _CharT, class _Traits, class _Allocator> 3641template <class _Tp> 3642_LIBCPP_CONSTEXPR_AFTER_CXX17 3643__enable_if_t 3644< 3645 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3646 typename basic_string<_CharT, _Traits, _Allocator>::size_type 3647> 3648basic_string<_CharT, _Traits, _Allocator>::find(const _Tp &__t, 3649 size_type __pos) const _NOEXCEPT 3650{ 3651 __self_view __sv = __t; 3652 return __str_find<value_type, size_type, traits_type, npos> 3653 (data(), size(), __sv.data(), __pos, __sv.size()); 3654} 3655 3656template<class _CharT, class _Traits, class _Allocator> 3657inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3658typename basic_string<_CharT, _Traits, _Allocator>::size_type 3659basic_string<_CharT, _Traits, _Allocator>::find(const value_type* __s, 3660 size_type __pos) const _NOEXCEPT 3661{ 3662 _LIBCPP_ASSERT(__s != nullptr, "string::find(): received nullptr"); 3663 return __str_find<value_type, size_type, traits_type, npos> 3664 (data(), size(), __s, __pos, traits_type::length(__s)); 3665} 3666 3667template<class _CharT, class _Traits, class _Allocator> 3668_LIBCPP_CONSTEXPR_AFTER_CXX17 3669typename basic_string<_CharT, _Traits, _Allocator>::size_type 3670basic_string<_CharT, _Traits, _Allocator>::find(value_type __c, 3671 size_type __pos) const _NOEXCEPT 3672{ 3673 return __str_find<value_type, size_type, traits_type, npos> 3674 (data(), size(), __c, __pos); 3675} 3676 3677// rfind 3678 3679template<class _CharT, class _Traits, class _Allocator> 3680_LIBCPP_CONSTEXPR_AFTER_CXX17 3681typename basic_string<_CharT, _Traits, _Allocator>::size_type 3682basic_string<_CharT, _Traits, _Allocator>::rfind(const value_type* __s, 3683 size_type __pos, 3684 size_type __n) const _NOEXCEPT 3685{ 3686 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::rfind(): received nullptr"); 3687 return __str_rfind<value_type, size_type, traits_type, npos> 3688 (data(), size(), __s, __pos, __n); 3689} 3690 3691template<class _CharT, class _Traits, class _Allocator> 3692inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3693typename basic_string<_CharT, _Traits, _Allocator>::size_type 3694basic_string<_CharT, _Traits, _Allocator>::rfind(const basic_string& __str, 3695 size_type __pos) const _NOEXCEPT 3696{ 3697 return __str_rfind<value_type, size_type, traits_type, npos> 3698 (data(), size(), __str.data(), __pos, __str.size()); 3699} 3700 3701template<class _CharT, class _Traits, class _Allocator> 3702template <class _Tp> 3703_LIBCPP_CONSTEXPR_AFTER_CXX17 3704__enable_if_t 3705< 3706 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3707 typename basic_string<_CharT, _Traits, _Allocator>::size_type 3708> 3709basic_string<_CharT, _Traits, _Allocator>::rfind(const _Tp& __t, 3710 size_type __pos) const _NOEXCEPT 3711{ 3712 __self_view __sv = __t; 3713 return __str_rfind<value_type, size_type, traits_type, npos> 3714 (data(), size(), __sv.data(), __pos, __sv.size()); 3715} 3716 3717template<class _CharT, class _Traits, class _Allocator> 3718inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3719typename basic_string<_CharT, _Traits, _Allocator>::size_type 3720basic_string<_CharT, _Traits, _Allocator>::rfind(const value_type* __s, 3721 size_type __pos) const _NOEXCEPT 3722{ 3723 _LIBCPP_ASSERT(__s != nullptr, "string::rfind(): received nullptr"); 3724 return __str_rfind<value_type, size_type, traits_type, npos> 3725 (data(), size(), __s, __pos, traits_type::length(__s)); 3726} 3727 3728template<class _CharT, class _Traits, class _Allocator> 3729_LIBCPP_CONSTEXPR_AFTER_CXX17 3730typename basic_string<_CharT, _Traits, _Allocator>::size_type 3731basic_string<_CharT, _Traits, _Allocator>::rfind(value_type __c, 3732 size_type __pos) const _NOEXCEPT 3733{ 3734 return __str_rfind<value_type, size_type, traits_type, npos> 3735 (data(), size(), __c, __pos); 3736} 3737 3738// find_first_of 3739 3740template<class _CharT, class _Traits, class _Allocator> 3741_LIBCPP_CONSTEXPR_AFTER_CXX17 3742typename basic_string<_CharT, _Traits, _Allocator>::size_type 3743basic_string<_CharT, _Traits, _Allocator>::find_first_of(const value_type* __s, 3744 size_type __pos, 3745 size_type __n) const _NOEXCEPT 3746{ 3747 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::find_first_of(): received nullptr"); 3748 return __str_find_first_of<value_type, size_type, traits_type, npos> 3749 (data(), size(), __s, __pos, __n); 3750} 3751 3752template<class _CharT, class _Traits, class _Allocator> 3753inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3754typename basic_string<_CharT, _Traits, _Allocator>::size_type 3755basic_string<_CharT, _Traits, _Allocator>::find_first_of(const basic_string& __str, 3756 size_type __pos) const _NOEXCEPT 3757{ 3758 return __str_find_first_of<value_type, size_type, traits_type, npos> 3759 (data(), size(), __str.data(), __pos, __str.size()); 3760} 3761 3762template<class _CharT, class _Traits, class _Allocator> 3763template <class _Tp> 3764_LIBCPP_CONSTEXPR_AFTER_CXX17 3765__enable_if_t 3766< 3767 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3768 typename basic_string<_CharT, _Traits, _Allocator>::size_type 3769> 3770basic_string<_CharT, _Traits, _Allocator>::find_first_of(const _Tp& __t, 3771 size_type __pos) const _NOEXCEPT 3772{ 3773 __self_view __sv = __t; 3774 return __str_find_first_of<value_type, size_type, traits_type, npos> 3775 (data(), size(), __sv.data(), __pos, __sv.size()); 3776} 3777 3778template<class _CharT, class _Traits, class _Allocator> 3779inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3780typename basic_string<_CharT, _Traits, _Allocator>::size_type 3781basic_string<_CharT, _Traits, _Allocator>::find_first_of(const value_type* __s, 3782 size_type __pos) const _NOEXCEPT 3783{ 3784 _LIBCPP_ASSERT(__s != nullptr, "string::find_first_of(): received nullptr"); 3785 return __str_find_first_of<value_type, size_type, traits_type, npos> 3786 (data(), size(), __s, __pos, traits_type::length(__s)); 3787} 3788 3789template<class _CharT, class _Traits, class _Allocator> 3790inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3791typename basic_string<_CharT, _Traits, _Allocator>::size_type 3792basic_string<_CharT, _Traits, _Allocator>::find_first_of(value_type __c, 3793 size_type __pos) const _NOEXCEPT 3794{ 3795 return find(__c, __pos); 3796} 3797 3798// find_last_of 3799 3800template<class _CharT, class _Traits, class _Allocator> 3801inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3802typename basic_string<_CharT, _Traits, _Allocator>::size_type 3803basic_string<_CharT, _Traits, _Allocator>::find_last_of(const value_type* __s, 3804 size_type __pos, 3805 size_type __n) const _NOEXCEPT 3806{ 3807 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::find_last_of(): received nullptr"); 3808 return __str_find_last_of<value_type, size_type, traits_type, npos> 3809 (data(), size(), __s, __pos, __n); 3810} 3811 3812template<class _CharT, class _Traits, class _Allocator> 3813inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3814typename basic_string<_CharT, _Traits, _Allocator>::size_type 3815basic_string<_CharT, _Traits, _Allocator>::find_last_of(const basic_string& __str, 3816 size_type __pos) const _NOEXCEPT 3817{ 3818 return __str_find_last_of<value_type, size_type, traits_type, npos> 3819 (data(), size(), __str.data(), __pos, __str.size()); 3820} 3821 3822template<class _CharT, class _Traits, class _Allocator> 3823template <class _Tp> 3824_LIBCPP_CONSTEXPR_AFTER_CXX17 3825__enable_if_t 3826< 3827 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3828 typename basic_string<_CharT, _Traits, _Allocator>::size_type 3829> 3830basic_string<_CharT, _Traits, _Allocator>::find_last_of(const _Tp& __t, 3831 size_type __pos) const _NOEXCEPT 3832{ 3833 __self_view __sv = __t; 3834 return __str_find_last_of<value_type, size_type, traits_type, npos> 3835 (data(), size(), __sv.data(), __pos, __sv.size()); 3836} 3837 3838template<class _CharT, class _Traits, class _Allocator> 3839inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3840typename basic_string<_CharT, _Traits, _Allocator>::size_type 3841basic_string<_CharT, _Traits, _Allocator>::find_last_of(const value_type* __s, 3842 size_type __pos) const _NOEXCEPT 3843{ 3844 _LIBCPP_ASSERT(__s != nullptr, "string::find_last_of(): received nullptr"); 3845 return __str_find_last_of<value_type, size_type, traits_type, npos> 3846 (data(), size(), __s, __pos, traits_type::length(__s)); 3847} 3848 3849template<class _CharT, class _Traits, class _Allocator> 3850inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3851typename basic_string<_CharT, _Traits, _Allocator>::size_type 3852basic_string<_CharT, _Traits, _Allocator>::find_last_of(value_type __c, 3853 size_type __pos) const _NOEXCEPT 3854{ 3855 return rfind(__c, __pos); 3856} 3857 3858// find_first_not_of 3859 3860template<class _CharT, class _Traits, class _Allocator> 3861_LIBCPP_CONSTEXPR_AFTER_CXX17 3862typename basic_string<_CharT, _Traits, _Allocator>::size_type 3863basic_string<_CharT, _Traits, _Allocator>::find_first_not_of(const value_type* __s, 3864 size_type __pos, 3865 size_type __n) const _NOEXCEPT 3866{ 3867 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::find_first_not_of(): received nullptr"); 3868 return __str_find_first_not_of<value_type, size_type, traits_type, npos> 3869 (data(), size(), __s, __pos, __n); 3870} 3871 3872template<class _CharT, class _Traits, class _Allocator> 3873inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3874typename basic_string<_CharT, _Traits, _Allocator>::size_type 3875basic_string<_CharT, _Traits, _Allocator>::find_first_not_of(const basic_string& __str, 3876 size_type __pos) const _NOEXCEPT 3877{ 3878 return __str_find_first_not_of<value_type, size_type, traits_type, npos> 3879 (data(), size(), __str.data(), __pos, __str.size()); 3880} 3881 3882template<class _CharT, class _Traits, class _Allocator> 3883template <class _Tp> 3884_LIBCPP_CONSTEXPR_AFTER_CXX17 3885__enable_if_t 3886< 3887 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3888 typename basic_string<_CharT, _Traits, _Allocator>::size_type 3889> 3890basic_string<_CharT, _Traits, _Allocator>::find_first_not_of(const _Tp& __t, 3891 size_type __pos) const _NOEXCEPT 3892{ 3893 __self_view __sv = __t; 3894 return __str_find_first_not_of<value_type, size_type, traits_type, npos> 3895 (data(), size(), __sv.data(), __pos, __sv.size()); 3896} 3897 3898template<class _CharT, class _Traits, class _Allocator> 3899inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3900typename basic_string<_CharT, _Traits, _Allocator>::size_type 3901basic_string<_CharT, _Traits, _Allocator>::find_first_not_of(const value_type* __s, 3902 size_type __pos) const _NOEXCEPT 3903{ 3904 _LIBCPP_ASSERT(__s != nullptr, "string::find_first_not_of(): received nullptr"); 3905 return __str_find_first_not_of<value_type, size_type, traits_type, npos> 3906 (data(), size(), __s, __pos, traits_type::length(__s)); 3907} 3908 3909template<class _CharT, class _Traits, class _Allocator> 3910inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3911typename basic_string<_CharT, _Traits, _Allocator>::size_type 3912basic_string<_CharT, _Traits, _Allocator>::find_first_not_of(value_type __c, 3913 size_type __pos) const _NOEXCEPT 3914{ 3915 return __str_find_first_not_of<value_type, size_type, traits_type, npos> 3916 (data(), size(), __c, __pos); 3917} 3918 3919// find_last_not_of 3920 3921template<class _CharT, class _Traits, class _Allocator> 3922_LIBCPP_CONSTEXPR_AFTER_CXX17 3923typename basic_string<_CharT, _Traits, _Allocator>::size_type 3924basic_string<_CharT, _Traits, _Allocator>::find_last_not_of(const value_type* __s, 3925 size_type __pos, 3926 size_type __n) const _NOEXCEPT 3927{ 3928 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::find_last_not_of(): received nullptr"); 3929 return __str_find_last_not_of<value_type, size_type, traits_type, npos> 3930 (data(), size(), __s, __pos, __n); 3931} 3932 3933template<class _CharT, class _Traits, class _Allocator> 3934inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3935typename basic_string<_CharT, _Traits, _Allocator>::size_type 3936basic_string<_CharT, _Traits, _Allocator>::find_last_not_of(const basic_string& __str, 3937 size_type __pos) const _NOEXCEPT 3938{ 3939 return __str_find_last_not_of<value_type, size_type, traits_type, npos> 3940 (data(), size(), __str.data(), __pos, __str.size()); 3941} 3942 3943template<class _CharT, class _Traits, class _Allocator> 3944template <class _Tp> 3945_LIBCPP_CONSTEXPR_AFTER_CXX17 3946__enable_if_t 3947< 3948 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3949 typename basic_string<_CharT, _Traits, _Allocator>::size_type 3950> 3951basic_string<_CharT, _Traits, _Allocator>::find_last_not_of(const _Tp& __t, 3952 size_type __pos) const _NOEXCEPT 3953{ 3954 __self_view __sv = __t; 3955 return __str_find_last_not_of<value_type, size_type, traits_type, npos> 3956 (data(), size(), __sv.data(), __pos, __sv.size()); 3957} 3958 3959template<class _CharT, class _Traits, class _Allocator> 3960inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3961typename basic_string<_CharT, _Traits, _Allocator>::size_type 3962basic_string<_CharT, _Traits, _Allocator>::find_last_not_of(const value_type* __s, 3963 size_type __pos) const _NOEXCEPT 3964{ 3965 _LIBCPP_ASSERT(__s != nullptr, "string::find_last_not_of(): received nullptr"); 3966 return __str_find_last_not_of<value_type, size_type, traits_type, npos> 3967 (data(), size(), __s, __pos, traits_type::length(__s)); 3968} 3969 3970template<class _CharT, class _Traits, class _Allocator> 3971inline _LIBCPP_CONSTEXPR_AFTER_CXX17 3972typename basic_string<_CharT, _Traits, _Allocator>::size_type 3973basic_string<_CharT, _Traits, _Allocator>::find_last_not_of(value_type __c, 3974 size_type __pos) const _NOEXCEPT 3975{ 3976 return __str_find_last_not_of<value_type, size_type, traits_type, npos> 3977 (data(), size(), __c, __pos); 3978} 3979 3980// compare 3981 3982template <class _CharT, class _Traits, class _Allocator> 3983template <class _Tp> 3984_LIBCPP_CONSTEXPR_AFTER_CXX17 3985__enable_if_t 3986< 3987 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 3988 int 3989> 3990basic_string<_CharT, _Traits, _Allocator>::compare(const _Tp& __t) const _NOEXCEPT 3991{ 3992 __self_view __sv = __t; 3993 size_t __lhs_sz = size(); 3994 size_t __rhs_sz = __sv.size(); 3995 int __result = traits_type::compare(data(), __sv.data(), 3996 std::min(__lhs_sz, __rhs_sz)); 3997 if (__result != 0) 3998 return __result; 3999 if (__lhs_sz < __rhs_sz) 4000 return -1; 4001 if (__lhs_sz > __rhs_sz) 4002 return 1; 4003 return 0; 4004} 4005 4006template <class _CharT, class _Traits, class _Allocator> 4007inline _LIBCPP_CONSTEXPR_AFTER_CXX17 4008int 4009basic_string<_CharT, _Traits, _Allocator>::compare(const basic_string& __str) const _NOEXCEPT 4010{ 4011 return compare(__self_view(__str)); 4012} 4013 4014template <class _CharT, class _Traits, class _Allocator> 4015inline _LIBCPP_CONSTEXPR_AFTER_CXX17 4016int 4017basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1, 4018 size_type __n1, 4019 const value_type* __s, 4020 size_type __n2) const 4021{ 4022 _LIBCPP_ASSERT(__n2 == 0 || __s != nullptr, "string::compare(): received nullptr"); 4023 size_type __sz = size(); 4024 if (__pos1 > __sz || __n2 == npos) 4025 __throw_out_of_range(); 4026 size_type __rlen = std::min(__n1, __sz - __pos1); 4027 int __r = traits_type::compare(data() + __pos1, __s, std::min(__rlen, __n2)); 4028 if (__r == 0) 4029 { 4030 if (__rlen < __n2) 4031 __r = -1; 4032 else if (__rlen > __n2) 4033 __r = 1; 4034 } 4035 return __r; 4036} 4037 4038template <class _CharT, class _Traits, class _Allocator> 4039template <class _Tp> 4040_LIBCPP_CONSTEXPR_AFTER_CXX17 4041__enable_if_t 4042< 4043 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, 4044 int 4045> 4046basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1, 4047 size_type __n1, 4048 const _Tp& __t) const 4049{ 4050 __self_view __sv = __t; 4051 return compare(__pos1, __n1, __sv.data(), __sv.size()); 4052} 4053 4054template <class _CharT, class _Traits, class _Allocator> 4055inline _LIBCPP_CONSTEXPR_AFTER_CXX17 4056int 4057basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1, 4058 size_type __n1, 4059 const basic_string& __str) const 4060{ 4061 return compare(__pos1, __n1, __str.data(), __str.size()); 4062} 4063 4064template <class _CharT, class _Traits, class _Allocator> 4065template <class _Tp> 4066_LIBCPP_CONSTEXPR_AFTER_CXX17 4067__enable_if_t 4068< 4069 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value 4070 && !__is_same_uncvref<_Tp, basic_string<_CharT, _Traits, _Allocator> >::value, 4071 int 4072> 4073basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1, 4074 size_type __n1, 4075 const _Tp& __t, 4076 size_type __pos2, 4077 size_type __n2) const 4078{ 4079 __self_view __sv = __t; 4080 return __self_view(*this).substr(__pos1, __n1).compare(__sv.substr(__pos2, __n2)); 4081} 4082 4083template <class _CharT, class _Traits, class _Allocator> 4084_LIBCPP_CONSTEXPR_AFTER_CXX17 4085int 4086basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1, 4087 size_type __n1, 4088 const basic_string& __str, 4089 size_type __pos2, 4090 size_type __n2) const 4091{ 4092 return compare(__pos1, __n1, __self_view(__str), __pos2, __n2); 4093} 4094 4095template <class _CharT, class _Traits, class _Allocator> 4096_LIBCPP_CONSTEXPR_AFTER_CXX17 4097int 4098basic_string<_CharT, _Traits, _Allocator>::compare(const value_type* __s) const _NOEXCEPT 4099{ 4100 _LIBCPP_ASSERT(__s != nullptr, "string::compare(): received nullptr"); 4101 return compare(0, npos, __s, traits_type::length(__s)); 4102} 4103 4104template <class _CharT, class _Traits, class _Allocator> 4105_LIBCPP_CONSTEXPR_AFTER_CXX17 4106int 4107basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1, 4108 size_type __n1, 4109 const value_type* __s) const 4110{ 4111 _LIBCPP_ASSERT(__s != nullptr, "string::compare(): received nullptr"); 4112 return compare(__pos1, __n1, __s, traits_type::length(__s)); 4113} 4114 4115// __invariants 4116 4117template<class _CharT, class _Traits, class _Allocator> 4118inline _LIBCPP_CONSTEXPR_AFTER_CXX17 4119bool 4120basic_string<_CharT, _Traits, _Allocator>::__invariants() const 4121{ 4122 if (size() > capacity()) 4123 return false; 4124 if (capacity() < __min_cap - 1) 4125 return false; 4126 if (data() == nullptr) 4127 return false; 4128 if (data()[size()] != value_type()) 4129 return false; 4130 return true; 4131} 4132 4133// __clear_and_shrink 4134 4135template<class _CharT, class _Traits, class _Allocator> 4136inline _LIBCPP_CONSTEXPR_AFTER_CXX17 4137void 4138basic_string<_CharT, _Traits, _Allocator>::__clear_and_shrink() _NOEXCEPT 4139{ 4140 clear(); 4141 if(__is_long()) 4142 { 4143 __alloc_traits::deallocate(__alloc(), __get_long_pointer(), capacity() + 1); 4144 __set_long_cap(0); 4145 __set_short_size(0); 4146 traits_type::assign(*__get_short_pointer(), value_type()); 4147 } 4148} 4149 4150// operator== 4151 4152template<class _CharT, class _Traits, class _Allocator> 4153inline _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI 4154bool 4155operator==(const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4156 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4157{ 4158 size_t __lhs_sz = __lhs.size(); 4159 return __lhs_sz == __rhs.size() && _Traits::compare(__lhs.data(), 4160 __rhs.data(), 4161 __lhs_sz) == 0; 4162} 4163 4164template<class _Allocator> 4165inline _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI 4166bool 4167operator==(const basic_string<char, char_traits<char>, _Allocator>& __lhs, 4168 const basic_string<char, char_traits<char>, _Allocator>& __rhs) _NOEXCEPT 4169{ 4170 size_t __lhs_sz = __lhs.size(); 4171 if (__lhs_sz != __rhs.size()) 4172 return false; 4173 const char* __lp = __lhs.data(); 4174 const char* __rp = __rhs.data(); 4175 if (__lhs.__is_long()) 4176 return char_traits<char>::compare(__lp, __rp, __lhs_sz) == 0; 4177 for (; __lhs_sz != 0; --__lhs_sz, ++__lp, ++__rp) 4178 if (*__lp != *__rp) 4179 return false; 4180 return true; 4181} 4182 4183template<class _CharT, class _Traits, class _Allocator> 4184inline _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI 4185bool 4186operator==(const _CharT* __lhs, 4187 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4188{ 4189 typedef basic_string<_CharT, _Traits, _Allocator> _String; 4190 _LIBCPP_ASSERT(__lhs != nullptr, "operator==(char*, basic_string): received nullptr"); 4191 size_t __lhs_len = _Traits::length(__lhs); 4192 if (__lhs_len != __rhs.size()) return false; 4193 return __rhs.compare(0, _String::npos, __lhs, __lhs_len) == 0; 4194} 4195 4196template<class _CharT, class _Traits, class _Allocator> 4197inline _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI 4198bool 4199operator==(const basic_string<_CharT,_Traits,_Allocator>& __lhs, 4200 const _CharT* __rhs) _NOEXCEPT 4201{ 4202 typedef basic_string<_CharT, _Traits, _Allocator> _String; 4203 _LIBCPP_ASSERT(__rhs != nullptr, "operator==(basic_string, char*): received nullptr"); 4204 size_t __rhs_len = _Traits::length(__rhs); 4205 if (__rhs_len != __lhs.size()) return false; 4206 return __lhs.compare(0, _String::npos, __rhs, __rhs_len) == 0; 4207} 4208 4209template<class _CharT, class _Traits, class _Allocator> 4210inline _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI 4211bool 4212operator!=(const basic_string<_CharT,_Traits,_Allocator>& __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 _CharT* __lhs, 4222 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4223{ 4224 return !(__lhs == __rhs); 4225} 4226 4227template<class _CharT, class _Traits, class _Allocator> 4228inline _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI 4229bool 4230operator!=(const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4231 const _CharT* __rhs) _NOEXCEPT 4232{ 4233 return !(__lhs == __rhs); 4234} 4235 4236// operator< 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 basic_string<_CharT, _Traits, _Allocator>& __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 basic_string<_CharT, _Traits, _Allocator>& __lhs, 4251 const _CharT* __rhs) _NOEXCEPT 4252{ 4253 return __lhs.compare(__rhs) < 0; 4254} 4255 4256template<class _CharT, class _Traits, class _Allocator> 4257inline _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI 4258bool 4259operator< (const _CharT* __lhs, 4260 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4261{ 4262 return __rhs.compare(__lhs) > 0; 4263} 4264 4265// operator> 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 basic_string<_CharT, _Traits, _Allocator>& __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 basic_string<_CharT, _Traits, _Allocator>& __lhs, 4280 const _CharT* __rhs) _NOEXCEPT 4281{ 4282 return __rhs < __lhs; 4283} 4284 4285template<class _CharT, class _Traits, class _Allocator> 4286inline _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI 4287bool 4288operator> (const _CharT* __lhs, 4289 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4290{ 4291 return __rhs < __lhs; 4292} 4293 4294// operator<= 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 basic_string<_CharT, _Traits, _Allocator>& __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 basic_string<_CharT, _Traits, _Allocator>& __lhs, 4309 const _CharT* __rhs) _NOEXCEPT 4310{ 4311 return !(__rhs < __lhs); 4312} 4313 4314template<class _CharT, class _Traits, class _Allocator> 4315inline _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI 4316bool 4317operator<=(const _CharT* __lhs, 4318 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4319{ 4320 return !(__rhs < __lhs); 4321} 4322 4323// operator>= 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 basic_string<_CharT, _Traits, _Allocator>& __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 basic_string<_CharT, _Traits, _Allocator>& __lhs, 4338 const _CharT* __rhs) _NOEXCEPT 4339{ 4340 return !(__lhs < __rhs); 4341} 4342 4343template<class _CharT, class _Traits, class _Allocator> 4344inline _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI 4345bool 4346operator>=(const _CharT* __lhs, 4347 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT 4348{ 4349 return !(__lhs < __rhs); 4350} 4351 4352// operator + 4353 4354template<class _CharT, class _Traits, class _Allocator> 4355_LIBCPP_CONSTEXPR_AFTER_CXX17 4356basic_string<_CharT, _Traits, _Allocator> 4357operator+(const basic_string<_CharT, _Traits, _Allocator>& __lhs, 4358 const basic_string<_CharT, _Traits, _Allocator>& __rhs) 4359{ 4360 using _String = basic_string<_CharT, _Traits, _Allocator>; 4361 auto __lhs_sz = __lhs.size(); 4362 auto __rhs_sz = __rhs.size(); 4363 _String __r(__uninitialized_size_tag(), 4364 __lhs_sz + __rhs_sz, 4365 _String::__alloc_traits::select_on_container_copy_construction(__lhs.get_allocator())); 4366 auto __ptr = std::__to_address(__r.__get_pointer()); 4367 _Traits::copy(__ptr, __lhs.data(), __lhs_sz); 4368 _Traits::copy(__ptr + __lhs_sz, __rhs.data(), __rhs_sz); 4369 _Traits::assign(__ptr + __lhs_sz + __rhs_sz, 1, _CharT()); 4370 return __r; 4371} 4372 4373template<class _CharT, class _Traits, class _Allocator> 4374_LIBCPP_CONSTEXPR_AFTER_CXX17 4375basic_string<_CharT, _Traits, _Allocator> 4376operator+(const _CharT* __lhs , const basic_string<_CharT,_Traits,_Allocator>& __rhs) 4377{ 4378 using _String = basic_string<_CharT, _Traits, _Allocator>; 4379 auto __lhs_sz = _Traits::length(__lhs); 4380 auto __rhs_sz = __rhs.size(); 4381 _String __r(__uninitialized_size_tag(), 4382 __lhs_sz + __rhs_sz, 4383 _String::__alloc_traits::select_on_container_copy_construction(__rhs.get_allocator())); 4384 auto __ptr = std::__to_address(__r.__get_pointer()); 4385 _Traits::copy(__ptr, __lhs, __lhs_sz); 4386 _Traits::copy(__ptr + __lhs_sz, __rhs.data(), __rhs_sz); 4387 _Traits::assign(__ptr + __lhs_sz + __rhs_sz, 1, _CharT()); 4388 return __r; 4389} 4390 4391template<class _CharT, class _Traits, class _Allocator> 4392_LIBCPP_CONSTEXPR_AFTER_CXX17 4393basic_string<_CharT, _Traits, _Allocator> 4394operator+(_CharT __lhs, const basic_string<_CharT,_Traits,_Allocator>& __rhs) 4395{ 4396 using _String = basic_string<_CharT, _Traits, _Allocator>; 4397 typename _String::size_type __rhs_sz = __rhs.size(); 4398 _String __r(__uninitialized_size_tag(), 4399 __rhs_sz + 1, 4400 _String::__alloc_traits::select_on_container_copy_construction(__rhs.get_allocator())); 4401 auto __ptr = std::__to_address(__r.__get_pointer()); 4402 _Traits::assign(__ptr, 1, __lhs); 4403 _Traits::copy(__ptr + 1, __rhs.data(), __rhs_sz); 4404 _Traits::assign(__ptr + 1 + __rhs_sz, 1, _CharT()); 4405 return __r; 4406} 4407 4408template<class _CharT, class _Traits, class _Allocator> 4409inline _LIBCPP_CONSTEXPR_AFTER_CXX17 4410basic_string<_CharT, _Traits, _Allocator> 4411operator+(const basic_string<_CharT, _Traits, _Allocator>& __lhs, const _CharT* __rhs) 4412{ 4413 using _String = basic_string<_CharT, _Traits, _Allocator>; 4414 typename _String::size_type __lhs_sz = __lhs.size(); 4415 typename _String::size_type __rhs_sz = _Traits::length(__rhs); 4416 _String __r(__uninitialized_size_tag(), 4417 __lhs_sz + __rhs_sz, 4418 _String::__alloc_traits::select_on_container_copy_construction(__lhs.get_allocator())); 4419 auto __ptr = std::__to_address(__r.__get_pointer()); 4420 _Traits::copy(__ptr, __lhs.data(), __lhs_sz); 4421 _Traits::copy(__ptr + __lhs_sz, __rhs, __rhs_sz); 4422 _Traits::assign(__ptr + __lhs_sz + __rhs_sz, 1, _CharT()); 4423 return __r; 4424} 4425 4426template<class _CharT, class _Traits, class _Allocator> 4427_LIBCPP_CONSTEXPR_AFTER_CXX17 4428basic_string<_CharT, _Traits, _Allocator> 4429operator+(const basic_string<_CharT, _Traits, _Allocator>& __lhs, _CharT __rhs) 4430{ 4431 using _String = basic_string<_CharT, _Traits, _Allocator>; 4432 typename _String::size_type __lhs_sz = __lhs.size(); 4433 _String __r(__uninitialized_size_tag(), 4434 __lhs_sz + 1, 4435 _String::__alloc_traits::select_on_container_copy_construction(__lhs.get_allocator())); 4436 auto __ptr = std::__to_address(__r.__get_pointer()); 4437 _Traits::copy(__ptr, __lhs.data(), __lhs_sz); 4438 _Traits::assign(__ptr + __lhs_sz, 1, __rhs); 4439 _Traits::assign(__ptr + 1 + __lhs_sz, 1, _CharT()); 4440 return __r; 4441} 4442 4443#ifndef _LIBCPP_CXX03_LANG 4444 4445template<class _CharT, class _Traits, class _Allocator> 4446inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 4447basic_string<_CharT, _Traits, _Allocator> 4448operator+(basic_string<_CharT, _Traits, _Allocator>&& __lhs, const basic_string<_CharT, _Traits, _Allocator>& __rhs) 4449{ 4450 return std::move(__lhs.append(__rhs)); 4451} 4452 4453template<class _CharT, class _Traits, class _Allocator> 4454inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 4455basic_string<_CharT, _Traits, _Allocator> 4456operator+(const basic_string<_CharT, _Traits, _Allocator>& __lhs, basic_string<_CharT, _Traits, _Allocator>&& __rhs) 4457{ 4458 return std::move(__rhs.insert(0, __lhs)); 4459} 4460 4461template<class _CharT, class _Traits, class _Allocator> 4462inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 4463basic_string<_CharT, _Traits, _Allocator> 4464operator+(basic_string<_CharT, _Traits, _Allocator>&& __lhs, basic_string<_CharT, _Traits, _Allocator>&& __rhs) 4465{ 4466 return std::move(__lhs.append(__rhs)); 4467} 4468 4469template<class _CharT, class _Traits, class _Allocator> 4470inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 4471basic_string<_CharT, _Traits, _Allocator> 4472operator+(const _CharT* __lhs , basic_string<_CharT,_Traits,_Allocator>&& __rhs) 4473{ 4474 return std::move(__rhs.insert(0, __lhs)); 4475} 4476 4477template<class _CharT, class _Traits, class _Allocator> 4478inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 4479basic_string<_CharT, _Traits, _Allocator> 4480operator+(_CharT __lhs, basic_string<_CharT,_Traits,_Allocator>&& __rhs) 4481{ 4482 __rhs.insert(__rhs.begin(), __lhs); 4483 return std::move(__rhs); 4484} 4485 4486template<class _CharT, class _Traits, class _Allocator> 4487inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 4488basic_string<_CharT, _Traits, _Allocator> 4489operator+(basic_string<_CharT, _Traits, _Allocator>&& __lhs, const _CharT* __rhs) 4490{ 4491 return std::move(__lhs.append(__rhs)); 4492} 4493 4494template<class _CharT, class _Traits, class _Allocator> 4495inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 4496basic_string<_CharT, _Traits, _Allocator> 4497operator+(basic_string<_CharT, _Traits, _Allocator>&& __lhs, _CharT __rhs) 4498{ 4499 __lhs.push_back(__rhs); 4500 return std::move(__lhs); 4501} 4502 4503#endif // _LIBCPP_CXX03_LANG 4504 4505// swap 4506 4507template<class _CharT, class _Traits, class _Allocator> 4508inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 4509void 4510swap(basic_string<_CharT, _Traits, _Allocator>& __lhs, 4511 basic_string<_CharT, _Traits, _Allocator>& __rhs) 4512 _NOEXCEPT_(_NOEXCEPT_(__lhs.swap(__rhs))) 4513{ 4514 __lhs.swap(__rhs); 4515} 4516 4517_LIBCPP_FUNC_VIS int stoi (const string& __str, size_t* __idx = nullptr, int __base = 10); 4518_LIBCPP_FUNC_VIS long stol (const string& __str, size_t* __idx = nullptr, int __base = 10); 4519_LIBCPP_FUNC_VIS unsigned long stoul (const string& __str, size_t* __idx = nullptr, int __base = 10); 4520_LIBCPP_FUNC_VIS long long stoll (const string& __str, size_t* __idx = nullptr, int __base = 10); 4521_LIBCPP_FUNC_VIS unsigned long long stoull(const string& __str, size_t* __idx = nullptr, int __base = 10); 4522 4523_LIBCPP_FUNC_VIS float stof (const string& __str, size_t* __idx = nullptr); 4524_LIBCPP_FUNC_VIS double stod (const string& __str, size_t* __idx = nullptr); 4525_LIBCPP_FUNC_VIS long double stold(const string& __str, size_t* __idx = nullptr); 4526 4527_LIBCPP_FUNC_VIS string to_string(int __val); 4528_LIBCPP_FUNC_VIS string to_string(unsigned __val); 4529_LIBCPP_FUNC_VIS string to_string(long __val); 4530_LIBCPP_FUNC_VIS string to_string(unsigned long __val); 4531_LIBCPP_FUNC_VIS string to_string(long long __val); 4532_LIBCPP_FUNC_VIS string to_string(unsigned long long __val); 4533_LIBCPP_FUNC_VIS string to_string(float __val); 4534_LIBCPP_FUNC_VIS string to_string(double __val); 4535_LIBCPP_FUNC_VIS string to_string(long double __val); 4536 4537#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 4538_LIBCPP_FUNC_VIS int stoi (const wstring& __str, size_t* __idx = nullptr, int __base = 10); 4539_LIBCPP_FUNC_VIS long stol (const wstring& __str, size_t* __idx = nullptr, int __base = 10); 4540_LIBCPP_FUNC_VIS unsigned long stoul (const wstring& __str, size_t* __idx = nullptr, int __base = 10); 4541_LIBCPP_FUNC_VIS long long stoll (const wstring& __str, size_t* __idx = nullptr, int __base = 10); 4542_LIBCPP_FUNC_VIS unsigned long long stoull(const wstring& __str, size_t* __idx = nullptr, int __base = 10); 4543 4544_LIBCPP_FUNC_VIS float stof (const wstring& __str, size_t* __idx = nullptr); 4545_LIBCPP_FUNC_VIS double stod (const wstring& __str, size_t* __idx = nullptr); 4546_LIBCPP_FUNC_VIS long double stold(const wstring& __str, size_t* __idx = nullptr); 4547 4548_LIBCPP_FUNC_VIS wstring to_wstring(int __val); 4549_LIBCPP_FUNC_VIS wstring to_wstring(unsigned __val); 4550_LIBCPP_FUNC_VIS wstring to_wstring(long __val); 4551_LIBCPP_FUNC_VIS wstring to_wstring(unsigned long __val); 4552_LIBCPP_FUNC_VIS wstring to_wstring(long long __val); 4553_LIBCPP_FUNC_VIS wstring to_wstring(unsigned long long __val); 4554_LIBCPP_FUNC_VIS wstring to_wstring(float __val); 4555_LIBCPP_FUNC_VIS wstring to_wstring(double __val); 4556_LIBCPP_FUNC_VIS wstring to_wstring(long double __val); 4557#endif // _LIBCPP_HAS_NO_WIDE_CHARACTERS 4558 4559template<class _CharT, class _Traits, class _Allocator> 4560_LIBCPP_TEMPLATE_DATA_VIS 4561const typename basic_string<_CharT, _Traits, _Allocator>::size_type 4562 basic_string<_CharT, _Traits, _Allocator>::npos; 4563 4564template <class _CharT, class _Allocator> 4565struct _LIBCPP_TEMPLATE_VIS 4566 hash<basic_string<_CharT, char_traits<_CharT>, _Allocator> > 4567 : public unary_function< 4568 basic_string<_CharT, char_traits<_CharT>, _Allocator>, size_t> 4569{ 4570 size_t 4571 operator()(const basic_string<_CharT, char_traits<_CharT>, _Allocator>& __val) const _NOEXCEPT 4572 { return __do_string_hash(__val.data(), __val.data() + __val.size()); } 4573}; 4574 4575 4576template<class _CharT, class _Traits, class _Allocator> 4577basic_ostream<_CharT, _Traits>& 4578operator<<(basic_ostream<_CharT, _Traits>& __os, 4579 const basic_string<_CharT, _Traits, _Allocator>& __str); 4580 4581template<class _CharT, class _Traits, class _Allocator> 4582basic_istream<_CharT, _Traits>& 4583operator>>(basic_istream<_CharT, _Traits>& __is, 4584 basic_string<_CharT, _Traits, _Allocator>& __str); 4585 4586template<class _CharT, class _Traits, class _Allocator> 4587basic_istream<_CharT, _Traits>& 4588getline(basic_istream<_CharT, _Traits>& __is, 4589 basic_string<_CharT, _Traits, _Allocator>& __str, _CharT __dlm); 4590 4591template<class _CharT, class _Traits, class _Allocator> 4592inline _LIBCPP_HIDE_FROM_ABI 4593basic_istream<_CharT, _Traits>& 4594getline(basic_istream<_CharT, _Traits>& __is, 4595 basic_string<_CharT, _Traits, _Allocator>& __str); 4596 4597template<class _CharT, class _Traits, class _Allocator> 4598inline _LIBCPP_HIDE_FROM_ABI 4599basic_istream<_CharT, _Traits>& 4600getline(basic_istream<_CharT, _Traits>&& __is, 4601 basic_string<_CharT, _Traits, _Allocator>& __str, _CharT __dlm); 4602 4603template<class _CharT, class _Traits, class _Allocator> 4604inline _LIBCPP_HIDE_FROM_ABI 4605basic_istream<_CharT, _Traits>& 4606getline(basic_istream<_CharT, _Traits>&& __is, 4607 basic_string<_CharT, _Traits, _Allocator>& __str); 4608 4609#if _LIBCPP_STD_VER > 17 4610template <class _CharT, class _Traits, class _Allocator, class _Up> 4611inline _LIBCPP_HIDE_FROM_ABI 4612 typename basic_string<_CharT, _Traits, _Allocator>::size_type 4613 erase(basic_string<_CharT, _Traits, _Allocator>& __str, const _Up& __v) { 4614 auto __old_size = __str.size(); 4615 __str.erase(std::remove(__str.begin(), __str.end(), __v), __str.end()); 4616 return __old_size - __str.size(); 4617} 4618 4619template <class _CharT, class _Traits, class _Allocator, class _Predicate> 4620inline _LIBCPP_HIDE_FROM_ABI 4621 typename basic_string<_CharT, _Traits, _Allocator>::size_type 4622 erase_if(basic_string<_CharT, _Traits, _Allocator>& __str, 4623 _Predicate __pred) { 4624 auto __old_size = __str.size(); 4625 __str.erase(std::remove_if(__str.begin(), __str.end(), __pred), 4626 __str.end()); 4627 return __old_size - __str.size(); 4628} 4629#endif 4630 4631#if _LIBCPP_DEBUG_LEVEL == 2 4632 4633template<class _CharT, class _Traits, class _Allocator> 4634bool 4635basic_string<_CharT, _Traits, _Allocator>::__dereferenceable(const const_iterator* __i) const 4636{ 4637 return data() <= std::__to_address(__i->base()) && 4638 std::__to_address(__i->base()) < data() + size(); 4639} 4640 4641template<class _CharT, class _Traits, class _Allocator> 4642bool 4643basic_string<_CharT, _Traits, _Allocator>::__decrementable(const const_iterator* __i) const 4644{ 4645 return data() < std::__to_address(__i->base()) && 4646 std::__to_address(__i->base()) <= data() + size(); 4647} 4648 4649template<class _CharT, class _Traits, class _Allocator> 4650bool 4651basic_string<_CharT, _Traits, _Allocator>::__addable(const const_iterator* __i, ptrdiff_t __n) const 4652{ 4653 const value_type* __p = std::__to_address(__i->base()) + __n; 4654 return data() <= __p && __p <= data() + size(); 4655} 4656 4657template<class _CharT, class _Traits, class _Allocator> 4658bool 4659basic_string<_CharT, _Traits, _Allocator>::__subscriptable(const const_iterator* __i, ptrdiff_t __n) const 4660{ 4661 const value_type* __p = std::__to_address(__i->base()) + __n; 4662 return data() <= __p && __p < data() + size(); 4663} 4664 4665#endif // _LIBCPP_DEBUG_LEVEL == 2 4666 4667#if _LIBCPP_STD_VER > 11 4668// Literal suffixes for basic_string [basic.string.literals] 4669inline namespace literals 4670{ 4671 inline namespace string_literals 4672 { 4673 inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 4674 basic_string<char> operator "" s( const char *__str, size_t __len ) 4675 { 4676 return basic_string<char> (__str, __len); 4677 } 4678 4679#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 4680 inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 4681 basic_string<wchar_t> operator "" s( const wchar_t *__str, size_t __len ) 4682 { 4683 return basic_string<wchar_t> (__str, __len); 4684 } 4685#endif 4686 4687#ifndef _LIBCPP_HAS_NO_CHAR8_T 4688 inline _LIBCPP_HIDE_FROM_ABI constexpr 4689 basic_string<char8_t> operator "" s(const char8_t *__str, size_t __len) _NOEXCEPT 4690 { 4691 return basic_string<char8_t> (__str, __len); 4692 } 4693#endif 4694 4695 inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 4696 basic_string<char16_t> operator "" s( const char16_t *__str, size_t __len ) 4697 { 4698 return basic_string<char16_t> (__str, __len); 4699 } 4700 4701 inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 4702 basic_string<char32_t> operator "" s( const char32_t *__str, size_t __len ) 4703 { 4704 return basic_string<char32_t> (__str, __len); 4705 } 4706 } // namespace string_literals 4707} // namespace literals 4708 4709#if _LIBCPP_STD_VER > 17 4710template <> 4711inline constexpr bool __format::__enable_insertable<std::basic_string<char>> = true; 4712#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 4713template <> 4714inline constexpr bool __format::__enable_insertable<std::basic_string<wchar_t>> = true; 4715#endif 4716#endif 4717 4718#endif 4719 4720_LIBCPP_END_NAMESPACE_STD 4721 4722_LIBCPP_POP_MACROS 4723 4724#endif // _LIBCPP_STRING 4725