2 //===--------------------------- string -----------------------------------===//
4 // The LLVM Compiler Infrastructure
6 // This file is distributed under the University of Illinois Open Source
7 // License. See LICENSE.TXT for details.
9 //===----------------------------------------------------------------------===//
11 #ifndef _LIBCPP_STRING
12 #define _LIBCPP_STRING
20 template <class stateT>
26 fpos(streamoff = streamoff());
28 operator streamoff() const;
33 fpos& operator+=(streamoff);
34 fpos operator+ (streamoff) const;
35 fpos& operator-=(streamoff);
36 fpos operator- (streamoff) const;
39 template <class stateT> streamoff operator-(const fpos<stateT>& x, const fpos<stateT>& y);
41 template <class stateT> bool operator==(const fpos<stateT>& x, const fpos<stateT>& y);
42 template <class stateT> bool operator!=(const fpos<stateT>& x, const fpos<stateT>& y);
44 template <class charT>
47 typedef charT char_type;
49 typedef streamoff off_type;
50 typedef streampos pos_type;
51 typedef mbstate_t state_type;
53 static void assign(char_type& c1, const char_type& c2) noexcept;
54 static constexpr bool eq(char_type c1, char_type c2) noexcept;
55 static constexpr bool lt(char_type c1, char_type c2) noexcept;
57 static int compare(const char_type* s1, const char_type* s2, size_t n);
58 static size_t length(const char_type* s);
59 static const char_type* find(const char_type* s, size_t n, const char_type& a);
60 static char_type* move(char_type* s1, const char_type* s2, size_t n);
61 static char_type* copy(char_type* s1, const char_type* s2, size_t n);
62 static char_type* assign(char_type* s, size_t n, char_type a);
64 static constexpr int_type not_eof(int_type c) noexcept;
65 static constexpr char_type to_char_type(int_type c) noexcept;
66 static constexpr int_type to_int_type(char_type c) noexcept;
67 static constexpr bool eq_int_type(int_type c1, int_type c2) noexcept;
68 static constexpr int_type eof() noexcept;
71 template <> struct char_traits<char>;
72 template <> struct char_traits<wchar_t>;
74 template<class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
79 typedef traits traits_type;
80 typedef typename traits_type::char_type value_type;
81 typedef Allocator allocator_type;
82 typedef typename allocator_type::size_type size_type;
83 typedef typename allocator_type::difference_type difference_type;
84 typedef typename allocator_type::reference reference;
85 typedef typename allocator_type::const_reference const_reference;
86 typedef typename allocator_type::pointer pointer;
87 typedef typename allocator_type::const_pointer const_pointer;
88 typedef implementation-defined iterator;
89 typedef implementation-defined const_iterator;
90 typedef std::reverse_iterator<iterator> reverse_iterator;
91 typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
93 static const size_type npos = -1;
96 noexcept(is_nothrow_default_constructible<allocator_type>::value);
97 explicit basic_string(const allocator_type& a);
98 basic_string(const basic_string& str);
99 basic_string(basic_string&& str)
100 noexcept(is_nothrow_move_constructible<allocator_type>::value);
101 basic_string(const basic_string& str, size_type pos,
102 const allocator_type& a = allocator_type());
103 basic_string(const basic_string& str, size_type pos, size_type n,
104 const Allocator& a = Allocator());
106 basic_string(const T& t, size_type pos, size_type n, const Allocator& a = Allocator()); // C++17
107 explicit basic_string(const basic_string_view<charT, traits> sv, const Allocator& a = Allocator());
108 basic_string(const value_type* s, const allocator_type& a = allocator_type());
109 basic_string(const value_type* s, size_type n, const allocator_type& a = allocator_type());
110 basic_string(size_type n, value_type c, const allocator_type& a = allocator_type());
111 template<class InputIterator>
112 basic_string(InputIterator begin, InputIterator end,
113 const allocator_type& a = allocator_type());
114 basic_string(initializer_list<value_type>, const Allocator& = Allocator());
115 basic_string(const basic_string&, const Allocator&);
116 basic_string(basic_string&&, const Allocator&);
120 operator basic_string_view<charT, traits>() const noexcept;
122 basic_string& operator=(const basic_string& str);
123 basic_string& operator=(basic_string_view<charT, traits> sv);
124 basic_string& operator=(basic_string&& str)
126 allocator_type::propagate_on_container_move_assignment::value ||
127 allocator_type::is_always_equal::value ); // C++17
128 basic_string& operator=(const value_type* s);
129 basic_string& operator=(value_type c);
130 basic_string& operator=(initializer_list<value_type>);
132 iterator begin() noexcept;
133 const_iterator begin() const noexcept;
134 iterator end() noexcept;
135 const_iterator end() const noexcept;
137 reverse_iterator rbegin() noexcept;
138 const_reverse_iterator rbegin() const noexcept;
139 reverse_iterator rend() noexcept;
140 const_reverse_iterator rend() const noexcept;
142 const_iterator cbegin() const noexcept;
143 const_iterator cend() const noexcept;
144 const_reverse_iterator crbegin() const noexcept;
145 const_reverse_iterator crend() const noexcept;
147 size_type size() const noexcept;
148 size_type length() const noexcept;
149 size_type max_size() const noexcept;
150 size_type capacity() const noexcept;
152 void resize(size_type n, value_type c);
153 void resize(size_type n);
155 void reserve(size_type res_arg = 0);
156 void shrink_to_fit();
157 void clear() noexcept;
158 bool empty() const noexcept;
160 const_reference operator[](size_type pos) const;
161 reference operator[](size_type pos);
163 const_reference at(size_type n) const;
164 reference at(size_type n);
166 basic_string& operator+=(const basic_string& str);
167 basic_string& operator+=(basic_string_view<charT, traits> sv);
168 basic_string& operator+=(const value_type* s);
169 basic_string& operator+=(value_type c);
170 basic_string& operator+=(initializer_list<value_type>);
172 basic_string& append(const basic_string& str);
173 basic_string& append(basic_string_view<charT, traits> sv);
174 basic_string& append(const basic_string& str, size_type pos, size_type n=npos); //C++14
176 basic_string& append(const T& t, size_type pos, size_type n=npos); // C++17
177 basic_string& append(const value_type* s, size_type n);
178 basic_string& append(const value_type* s);
179 basic_string& append(size_type n, value_type c);
180 template<class InputIterator>
181 basic_string& append(InputIterator first, InputIterator last);
182 basic_string& append(initializer_list<value_type>);
184 void push_back(value_type c);
187 const_reference front() const;
189 const_reference back() const;
191 basic_string& assign(const basic_string& str);
192 basic_string& assign(basic_string_view<charT, traits> sv);
193 basic_string& assign(basic_string&& str);
194 basic_string& assign(const basic_string& str, size_type pos, size_type n=npos); // C++14
196 basic_string& assign(const T& t, size_type pos, size_type n=npos); // C++17
197 basic_string& assign(const value_type* s, size_type n);
198 basic_string& assign(const value_type* s);
199 basic_string& assign(size_type n, value_type c);
200 template<class InputIterator>
201 basic_string& assign(InputIterator first, InputIterator last);
202 basic_string& assign(initializer_list<value_type>);
204 basic_string& insert(size_type pos1, const basic_string& str);
205 basic_string& insert(size_type pos1, basic_string_view<charT, traits> sv);
206 basic_string& insert(size_type pos1, const basic_string& str,
207 size_type pos2, size_type n);
209 basic_string& insert(size_type pos1, const T& t, size_type pos2, size_type n); // C++17
210 basic_string& insert(size_type pos, const value_type* s, size_type n=npos); //C++14
211 basic_string& insert(size_type pos, const value_type* s);
212 basic_string& insert(size_type pos, size_type n, value_type c);
213 iterator insert(const_iterator p, value_type c);
214 iterator insert(const_iterator p, size_type n, value_type c);
215 template<class InputIterator>
216 iterator insert(const_iterator p, InputIterator first, InputIterator last);
217 iterator insert(const_iterator p, initializer_list<value_type>);
219 basic_string& erase(size_type pos = 0, size_type n = npos);
220 iterator erase(const_iterator position);
221 iterator erase(const_iterator first, const_iterator last);
223 basic_string& replace(size_type pos1, size_type n1, const basic_string& str);
224 basic_string& replace(size_type pos1, size_type n1, basic_string_view<charT, traits> sv);
225 basic_string& replace(size_type pos1, size_type n1, const basic_string& str,
226 size_type pos2, size_type n2=npos); // C++14
228 basic_string& replace(size_type pos1, size_type n1, const T& t,
229 size_type pos2, size_type n); // C++17
230 basic_string& replace(size_type pos, size_type n1, const value_type* s, size_type n2);
231 basic_string& replace(size_type pos, size_type n1, const value_type* s);
232 basic_string& replace(size_type pos, size_type n1, size_type n2, value_type c);
233 basic_string& replace(const_iterator i1, const_iterator i2, const basic_string& str);
234 basic_string& replace(const_iterator i1, const_iterator i2, basic_string_view<charT, traits> sv);
235 basic_string& replace(const_iterator i1, const_iterator i2, const value_type* s, size_type n);
236 basic_string& replace(const_iterator i1, const_iterator i2, const value_type* s);
237 basic_string& replace(const_iterator i1, const_iterator i2, size_type n, value_type c);
238 template<class InputIterator>
239 basic_string& replace(const_iterator i1, const_iterator i2, InputIterator j1, InputIterator j2);
240 basic_string& replace(const_iterator i1, const_iterator i2, initializer_list<value_type>);
242 size_type copy(value_type* s, size_type n, size_type pos = 0) const;
243 basic_string substr(size_type pos = 0, size_type n = npos) const;
245 void swap(basic_string& str)
246 noexcept(allocator_traits<allocator_type>::propagate_on_container_swap::value ||
247 allocator_traits<allocator_type>::is_always_equal::value); // C++17
249 const value_type* c_str() const noexcept;
250 const value_type* data() const noexcept;
251 value_type* data() noexcept; // C++17
253 allocator_type get_allocator() const noexcept;
255 size_type find(const basic_string& str, size_type pos = 0) const noexcept;
256 size_type find(basic_string_view<charT, traits> sv, size_type pos = 0) const noexcept;
257 size_type find(const value_type* s, size_type pos, size_type n) const noexcept;
258 size_type find(const value_type* s, size_type pos = 0) const noexcept;
259 size_type find(value_type c, size_type pos = 0) const noexcept;
261 size_type rfind(const basic_string& str, size_type pos = npos) const noexcept;
262 size_type ffind(basic_string_view<charT, traits> sv, size_type pos = 0) const noexcept;
263 size_type rfind(const value_type* s, size_type pos, size_type n) const noexcept;
264 size_type rfind(const value_type* s, size_type pos = npos) const noexcept;
265 size_type rfind(value_type c, size_type pos = npos) const noexcept;
267 size_type find_first_of(const basic_string& str, size_type pos = 0) const noexcept;
268 size_type find_first_of(basic_string_view<charT, traits> sv, size_type pos = 0) const noexcept;
269 size_type find_first_of(const value_type* s, size_type pos, size_type n) const noexcept;
270 size_type find_first_of(const value_type* s, size_type pos = 0) const noexcept;
271 size_type find_first_of(value_type c, size_type pos = 0) const noexcept;
273 size_type find_last_of(const basic_string& str, size_type pos = npos) const noexcept;
274 size_type find_last_of(basic_string_view<charT, traits> sv, size_type pos = 0) const noexcept;
275 size_type find_last_of(const value_type* s, size_type pos, size_type n) const noexcept;
276 size_type find_last_of(const value_type* s, size_type pos = npos) const noexcept;
277 size_type find_last_of(value_type c, size_type pos = npos) const noexcept;
279 size_type find_first_not_of(const basic_string& str, size_type pos = 0) const noexcept;
280 size_type find_first_not_of(basic_string_view<charT, traits> sv, size_type pos = 0) const noexcept;
281 size_type find_first_not_of(const value_type* s, size_type pos, size_type n) const noexcept;
282 size_type find_first_not_of(const value_type* s, size_type pos = 0) const noexcept;
283 size_type find_first_not_of(value_type c, size_type pos = 0) const noexcept;
285 size_type find_last_not_of(const basic_string& str, size_type pos = npos) const noexcept;
286 size_type find_last_not_of(basic_string_view<charT, traits> sv, size_type pos = 0) const noexcept;
287 size_type find_last_not_of(const value_type* s, size_type pos, size_type n) const noexcept;
288 size_type find_last_not_of(const value_type* s, size_type pos = npos) const noexcept;
289 size_type find_last_not_of(value_type c, size_type pos = npos) const noexcept;
291 int compare(const basic_string& str) const noexcept;
292 int compare(basic_string_view<charT, traits> sv) const noexcept;
293 int compare(size_type pos1, size_type n1, const basic_string& str) const;
294 int compare(size_type pos1, size_type n1, basic_string_view<charT, traits> sv) const;
295 int compare(size_type pos1, size_type n1, const basic_string& str,
296 size_type pos2, size_type n2=npos) const; // C++14
298 int compare(size_type pos1, size_type n1, const T& t,
299 size_type pos2, size_type n2=npos) const; // C++17
300 int compare(const value_type* s) const noexcept;
301 int compare(size_type pos1, size_type n1, const value_type* s) const;
302 int compare(size_type pos1, size_type n1, const value_type* s, size_type n2) const;
304 bool __invariants() const;
307 template<class charT, class traits, class Allocator>
308 basic_string<charT, traits, Allocator>
309 operator+(const basic_string<charT, traits, Allocator>& lhs,
310 const basic_string<charT, traits, Allocator>& rhs);
312 template<class charT, class traits, class Allocator>
313 basic_string<charT, traits, Allocator>
314 operator+(const charT* lhs , const basic_string<charT,traits,Allocator>&rhs);
316 template<class charT, class traits, class Allocator>
317 basic_string<charT, traits, Allocator>
318 operator+(charT lhs, const basic_string<charT,traits,Allocator>& rhs);
320 template<class charT, class traits, class Allocator>
321 basic_string<charT, traits, Allocator>
322 operator+(const basic_string<charT, traits, Allocator>& lhs, const charT* rhs);
324 template<class charT, class traits, class Allocator>
325 basic_string<charT, traits, Allocator>
326 operator+(const basic_string<charT, traits, Allocator>& lhs, charT rhs);
328 template<class charT, class traits, class Allocator>
329 bool operator==(const basic_string<charT, traits, Allocator>& lhs,
330 const basic_string<charT, traits, Allocator>& rhs) noexcept;
332 template<class charT, class traits, class Allocator>
333 bool operator==(const charT* lhs, const basic_string<charT, traits, Allocator>& rhs) noexcept;
335 template<class charT, class traits, class Allocator>
336 bool operator==(const basic_string<charT,traits,Allocator>& lhs, const charT* rhs) noexcept;
338 template<class charT, class traits, class Allocator>
339 bool operator!=(const basic_string<charT,traits,Allocator>& lhs,
340 const basic_string<charT, traits, Allocator>& rhs) noexcept;
342 template<class charT, class traits, class Allocator>
343 bool operator!=(const charT* lhs, const basic_string<charT, traits, Allocator>& rhs) noexcept;
345 template<class charT, class traits, class Allocator>
346 bool operator!=(const basic_string<charT, traits, Allocator>& lhs, const charT* rhs) noexcept;
348 template<class charT, class traits, class Allocator>
349 bool operator< (const basic_string<charT, traits, Allocator>& lhs,
350 const basic_string<charT, traits, Allocator>& rhs) noexcept;
352 template<class charT, class traits, class Allocator>
353 bool operator< (const basic_string<charT, traits, Allocator>& lhs, const charT* rhs) noexcept;
355 template<class charT, class traits, class Allocator>
356 bool operator< (const charT* lhs, const basic_string<charT, traits, Allocator>& rhs) noexcept;
358 template<class charT, class traits, class Allocator>
359 bool operator> (const basic_string<charT, traits, Allocator>& lhs,
360 const basic_string<charT, traits, Allocator>& rhs) noexcept;
362 template<class charT, class traits, class Allocator>
363 bool operator> (const basic_string<charT, traits, Allocator>& lhs, const charT* rhs) noexcept;
365 template<class charT, class traits, class Allocator>
366 bool operator> (const charT* lhs, const basic_string<charT, traits, Allocator>& rhs) noexcept;
368 template<class charT, class traits, class Allocator>
369 bool operator<=(const basic_string<charT, traits, Allocator>& lhs,
370 const basic_string<charT, traits, Allocator>& rhs) noexcept;
372 template<class charT, class traits, class Allocator>
373 bool operator<=(const basic_string<charT, traits, Allocator>& lhs, const charT* rhs) noexcept;
375 template<class charT, class traits, class Allocator>
376 bool operator<=(const charT* lhs, const basic_string<charT, traits, Allocator>& rhs) noexcept;
378 template<class charT, class traits, class Allocator>
379 bool operator>=(const basic_string<charT, traits, Allocator>& lhs,
380 const basic_string<charT, traits, Allocator>& rhs) noexcept;
382 template<class charT, class traits, class Allocator>
383 bool operator>=(const basic_string<charT, traits, Allocator>& lhs, const charT* rhs) noexcept;
385 template<class charT, class traits, class Allocator>
386 bool operator>=(const charT* lhs, const basic_string<charT, traits, Allocator>& rhs) noexcept;
388 template<class charT, class traits, class Allocator>
389 void swap(basic_string<charT, traits, Allocator>& lhs,
390 basic_string<charT, traits, Allocator>& rhs)
391 noexcept(noexcept(lhs.swap(rhs)));
393 template<class charT, class traits, class Allocator>
394 basic_istream<charT, traits>&
395 operator>>(basic_istream<charT, traits>& is, basic_string<charT, traits, Allocator>& str);
397 template<class charT, class traits, class Allocator>
398 basic_ostream<charT, traits>&
399 operator<<(basic_ostream<charT, traits>& os, const basic_string<charT, traits, Allocator>& str);
401 template<class charT, class traits, class Allocator>
402 basic_istream<charT, traits>&
403 getline(basic_istream<charT, traits>& is, basic_string<charT, traits, Allocator>& str,
406 template<class charT, class traits, class Allocator>
407 basic_istream<charT, traits>&
408 getline(basic_istream<charT, traits>& is, basic_string<charT, traits, Allocator>& str);
410 typedef basic_string<char> string;
411 typedef basic_string<wchar_t> wstring;
412 typedef basic_string<char16_t> u16string;
413 typedef basic_string<char32_t> u32string;
415 int stoi (const string& str, size_t* idx = 0, int base = 10);
416 long stol (const string& str, size_t* idx = 0, int base = 10);
417 unsigned long stoul (const string& str, size_t* idx = 0, int base = 10);
418 long long stoll (const string& str, size_t* idx = 0, int base = 10);
419 unsigned long long stoull(const string& str, size_t* idx = 0, int base = 10);
421 float stof (const string& str, size_t* idx = 0);
422 double stod (const string& str, size_t* idx = 0);
423 long double stold(const string& str, size_t* idx = 0);
425 string to_string(int val);
426 string to_string(unsigned val);
427 string to_string(long val);
428 string to_string(unsigned long val);
429 string to_string(long long val);
430 string to_string(unsigned long long val);
431 string to_string(float val);
432 string to_string(double val);
433 string to_string(long double val);
435 int stoi (const wstring& str, size_t* idx = 0, int base = 10);
436 long stol (const wstring& str, size_t* idx = 0, int base = 10);
437 unsigned long stoul (const wstring& str, size_t* idx = 0, int base = 10);
438 long long stoll (const wstring& str, size_t* idx = 0, int base = 10);
439 unsigned long long stoull(const wstring& str, size_t* idx = 0, int base = 10);
441 float stof (const wstring& str, size_t* idx = 0);
442 double stod (const wstring& str, size_t* idx = 0);
443 long double stold(const wstring& str, size_t* idx = 0);
445 wstring to_wstring(int val);
446 wstring to_wstring(unsigned val);
447 wstring to_wstring(long val);
448 wstring to_wstring(unsigned long val);
449 wstring to_wstring(long long val);
450 wstring to_wstring(unsigned long long val);
451 wstring to_wstring(float val);
452 wstring to_wstring(double val);
453 wstring to_wstring(long double val);
455 template <> struct hash<string>;
456 template <> struct hash<u16string>;
457 template <> struct hash<u32string>;
458 template <> struct hash<wstring>;
460 basic_string<char> operator "" s( const char *str, size_t len ); // C++14
461 basic_string<wchar_t> operator "" s( const wchar_t *str, size_t len ); // C++14
462 basic_string<char16_t> operator "" s( const char16_t *str, size_t len ); // C++14
463 basic_string<char32_t> operator "" s( const char32_t *str, size_t len ); // C++14
470 #include <string_view>
473 #include <cstdio> // For EOF.
480 #include <type_traits>
481 #include <initializer_list>
482 #include <__functional_base>
483 #ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
489 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
490 #pragma GCC system_header
494 #include <__undef_macros>
497 _LIBCPP_BEGIN_NAMESPACE_STD
501 template <class _StateT>
502 class _LIBCPP_TEMPLATE_VIS fpos
508 _LIBCPP_INLINE_VISIBILITY fpos(streamoff __off = streamoff()) : __st_(), __off_(__off) {}
510 _LIBCPP_INLINE_VISIBILITY operator streamoff() const {return __off_;}
512 _LIBCPP_INLINE_VISIBILITY _StateT state() const {return __st_;}
513 _LIBCPP_INLINE_VISIBILITY void state(_StateT __st) {__st_ = __st;}
515 _LIBCPP_INLINE_VISIBILITY fpos& operator+=(streamoff __off) {__off_ += __off; return *this;}
516 _LIBCPP_INLINE_VISIBILITY fpos operator+ (streamoff __off) const {fpos __t(*this); __t += __off; return __t;}
517 _LIBCPP_INLINE_VISIBILITY fpos& operator-=(streamoff __off) {__off_ -= __off; return *this;}
518 _LIBCPP_INLINE_VISIBILITY fpos operator- (streamoff __off) const {fpos __t(*this); __t -= __off; return __t;}
521 template <class _StateT>
522 inline _LIBCPP_INLINE_VISIBILITY
523 streamoff operator-(const fpos<_StateT>& __x, const fpos<_StateT>& __y)
524 {return streamoff(__x) - streamoff(__y);}
526 template <class _StateT>
527 inline _LIBCPP_INLINE_VISIBILITY
528 bool operator==(const fpos<_StateT>& __x, const fpos<_StateT>& __y)
529 {return streamoff(__x) == streamoff(__y);}
531 template <class _StateT>
532 inline _LIBCPP_INLINE_VISIBILITY
533 bool operator!=(const fpos<_StateT>& __x, const fpos<_StateT>& __y)
534 {return streamoff(__x) != streamoff(__y);}
538 template<class _CharT, class _Traits, class _Allocator>
539 basic_string<_CharT, _Traits, _Allocator>
540 operator+(const basic_string<_CharT, _Traits, _Allocator>& __x,
541 const basic_string<_CharT, _Traits, _Allocator>& __y);
543 template<class _CharT, class _Traits, class _Allocator>
544 basic_string<_CharT, _Traits, _Allocator>
545 operator+(const _CharT* __x, const basic_string<_CharT,_Traits,_Allocator>& __y);
547 template<class _CharT, class _Traits, class _Allocator>
548 basic_string<_CharT, _Traits, _Allocator>
549 operator+(_CharT __x, const basic_string<_CharT,_Traits,_Allocator>& __y);
551 template<class _CharT, class _Traits, class _Allocator>
552 basic_string<_CharT, _Traits, _Allocator>
553 operator+(const basic_string<_CharT, _Traits, _Allocator>& __x, const _CharT* __y);
555 template<class _CharT, class _Traits, class _Allocator>
556 basic_string<_CharT, _Traits, _Allocator>
557 operator+(const basic_string<_CharT, _Traits, _Allocator>& __x, _CharT __y);
560 class _LIBCPP_TEMPLATE_VIS __basic_string_common
563 _LIBCPP_NORETURN void __throw_length_error() const;
564 _LIBCPP_NORETURN void __throw_out_of_range() const;
569 __basic_string_common<__b>::__throw_length_error() const
571 _VSTD::__throw_length_error("basic_string");
576 __basic_string_common<__b>::__throw_out_of_range() const
578 _VSTD::__throw_out_of_range("basic_string");
581 _LIBCPP_EXTERN_TEMPLATE(class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS __basic_string_common<true>)
583 #ifdef _LIBCPP_NO_EXCEPTIONS
584 template <class _Iter>
585 struct __libcpp_string_gets_noexcept_iterator_impl : public true_type {};
586 #elif defined(_LIBCPP_HAS_NO_NOEXCEPT)
587 template <class _Iter>
588 struct __libcpp_string_gets_noexcept_iterator_impl : public false_type {};
590 template <class _Iter, bool = __is_forward_iterator<_Iter>::value>
591 struct __libcpp_string_gets_noexcept_iterator_impl : public _LIBCPP_BOOL_CONSTANT((
592 noexcept(++(declval<_Iter&>())) &&
593 is_nothrow_assignable<_Iter&, _Iter>::value &&
594 noexcept(declval<_Iter>() == declval<_Iter>()) &&
595 noexcept(*declval<_Iter>())
598 template <class _Iter>
599 struct __libcpp_string_gets_noexcept_iterator_impl<_Iter, false> : public false_type {};
603 template <class _Iter>
604 struct __libcpp_string_gets_noexcept_iterator
605 : public _LIBCPP_BOOL_CONSTANT(__libcpp_is_trivial_iterator<_Iter>::value || __libcpp_string_gets_noexcept_iterator_impl<_Iter>::value) {};
607 template <class _CharT, class _Traits, class _Tp>
608 struct __can_be_converted_to_string_view : public _LIBCPP_BOOL_CONSTANT(
609 ( is_convertible<const _Tp&, basic_string_view<_CharT, _Traits> >::value &&
610 !is_convertible<const _Tp&, const _CharT*>::value)) {};
612 #ifdef _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT
614 template <class _CharT, size_t = sizeof(_CharT)>
617 unsigned char __xx[sizeof(_CharT)-1];
620 template <class _CharT>
621 struct __padding<_CharT, 1>
625 #endif // _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT
627 template<class _CharT, class _Traits, class _Allocator>
628 class _LIBCPP_TEMPLATE_VIS basic_string
629 : private __basic_string_common<true>
632 typedef basic_string __self;
633 typedef basic_string_view<_CharT, _Traits> __self_view;
634 typedef _Traits traits_type;
635 typedef _CharT value_type;
636 typedef _Allocator allocator_type;
637 typedef allocator_traits<allocator_type> __alloc_traits;
638 typedef typename __alloc_traits::size_type size_type;
639 typedef typename __alloc_traits::difference_type difference_type;
640 typedef value_type& reference;
641 typedef const value_type& const_reference;
642 typedef typename __alloc_traits::pointer pointer;
643 typedef typename __alloc_traits::const_pointer const_pointer;
645 static_assert(is_pod<value_type>::value, "Character type of basic_string must be a POD");
646 static_assert((is_same<_CharT, typename traits_type::char_type>::value),
647 "traits_type::char_type must be the same type as CharT");
648 static_assert((is_same<typename allocator_type::value_type, value_type>::value),
649 "Allocator::value_type must be same type as value_type");
650 #if defined(_LIBCPP_RAW_ITERATORS)
651 typedef pointer iterator;
652 typedef const_pointer const_iterator;
653 #else // defined(_LIBCPP_RAW_ITERATORS)
654 typedef __wrap_iter<pointer> iterator;
655 typedef __wrap_iter<const_pointer> const_iterator;
656 #endif // defined(_LIBCPP_RAW_ITERATORS)
657 typedef _VSTD::reverse_iterator<iterator> reverse_iterator;
658 typedef _VSTD::reverse_iterator<const_iterator> const_reverse_iterator;
662 #ifdef _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT
671 #if _LIBCPP_BIG_ENDIAN
672 static const size_type __short_mask = 0x01;
673 static const size_type __long_mask = 0x1ul;
674 #else // _LIBCPP_BIG_ENDIAN
675 static const size_type __short_mask = 0x80;
676 static const size_type __long_mask = ~(size_type(~0) >> 1);
677 #endif // _LIBCPP_BIG_ENDIAN
679 enum {__min_cap = (sizeof(__long) - 1)/sizeof(value_type) > 2 ?
680 (sizeof(__long) - 1)/sizeof(value_type) : 2};
684 value_type __data_[__min_cap];
686 : __padding<value_type>
688 unsigned char __size_;
701 #if _LIBCPP_BIG_ENDIAN
702 static const size_type __short_mask = 0x80;
703 static const size_type __long_mask = ~(size_type(~0) >> 1);
704 #else // _LIBCPP_BIG_ENDIAN
705 static const size_type __short_mask = 0x01;
706 static const size_type __long_mask = 0x1ul;
707 #endif // _LIBCPP_BIG_ENDIAN
709 enum {__min_cap = (sizeof(__long) - 1)/sizeof(value_type) > 2 ?
710 (sizeof(__long) - 1)/sizeof(value_type) : 2};
716 unsigned char __size_;
719 value_type __data_[__min_cap];
722 #endif // _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT
724 union __ulx{__long __lx; __short __lxx;};
726 enum {__n_words = sizeof(__ulx) / sizeof(size_type)};
730 size_type __words[__n_words];
743 __compressed_pair<__rep, allocator_type> __r_;
746 static const size_type npos = -1;
748 _LIBCPP_INLINE_VISIBILITY basic_string()
749 _NOEXCEPT_(is_nothrow_default_constructible<allocator_type>::value);
751 _LIBCPP_INLINE_VISIBILITY explicit basic_string(const allocator_type& __a)
752 #if _LIBCPP_STD_VER <= 14
753 _NOEXCEPT_(is_nothrow_copy_constructible<allocator_type>::value);
758 basic_string(const basic_string& __str);
759 basic_string(const basic_string& __str, const allocator_type& __a);
761 #ifndef _LIBCPP_CXX03_LANG
762 _LIBCPP_INLINE_VISIBILITY
763 basic_string(basic_string&& __str)
764 #if _LIBCPP_STD_VER <= 14
765 _NOEXCEPT_(is_nothrow_move_constructible<allocator_type>::value);
770 _LIBCPP_INLINE_VISIBILITY
771 basic_string(basic_string&& __str, const allocator_type& __a);
772 #endif // _LIBCPP_CXX03_LANG
773 _LIBCPP_INLINE_VISIBILITY basic_string(const _CharT* __s);
774 _LIBCPP_INLINE_VISIBILITY
775 basic_string(const _CharT* __s, const _Allocator& __a);
776 _LIBCPP_INLINE_VISIBILITY
777 basic_string(const _CharT* __s, size_type __n);
778 _LIBCPP_INLINE_VISIBILITY
779 basic_string(const _CharT* __s, size_type __n, const _Allocator& __a);
780 _LIBCPP_INLINE_VISIBILITY
781 basic_string(size_type __n, _CharT __c);
782 _LIBCPP_INLINE_VISIBILITY
783 basic_string(size_type __n, _CharT __c, const _Allocator& __a);
784 basic_string(const basic_string& __str, size_type __pos, size_type __n,
785 const _Allocator& __a = _Allocator());
786 _LIBCPP_INLINE_VISIBILITY
787 basic_string(const basic_string& __str, size_type __pos,
788 const _Allocator& __a = _Allocator());
790 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS
791 basic_string(const _Tp& __t, size_type __pos, size_type __n,
792 const allocator_type& __a = allocator_type(),
793 typename enable_if<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, void>::type* = 0);
794 _LIBCPP_INLINE_VISIBILITY explicit
795 basic_string(__self_view __sv);
796 _LIBCPP_INLINE_VISIBILITY
797 basic_string(__self_view __sv, const _Allocator& __a);
798 template<class _InputIterator>
799 _LIBCPP_INLINE_VISIBILITY
800 basic_string(_InputIterator __first, _InputIterator __last);
801 template<class _InputIterator>
802 _LIBCPP_INLINE_VISIBILITY
803 basic_string(_InputIterator __first, _InputIterator __last, const allocator_type& __a);
804 #ifndef _LIBCPP_CXX03_LANG
805 _LIBCPP_INLINE_VISIBILITY
806 basic_string(initializer_list<_CharT> __il);
807 _LIBCPP_INLINE_VISIBILITY
808 basic_string(initializer_list<_CharT> __il, const _Allocator& __a);
809 #endif // _LIBCPP_CXX03_LANG
811 inline ~basic_string();
813 _LIBCPP_INLINE_VISIBILITY
814 operator __self_view() const _NOEXCEPT { return __self_view(data(), size()); }
816 basic_string& operator=(const basic_string& __str);
818 #ifndef _LIBCPP_CXX03_LANG
819 template <class = void>
821 _LIBCPP_INLINE_VISIBILITY
822 basic_string& operator=(__self_view __sv) {return assign(__sv);}
823 #ifndef _LIBCPP_CXX03_LANG
824 _LIBCPP_INLINE_VISIBILITY
825 basic_string& operator=(basic_string&& __str)
826 _NOEXCEPT_((__noexcept_move_assign_container<_Allocator, __alloc_traits>::value));
827 _LIBCPP_INLINE_VISIBILITY
828 basic_string& operator=(initializer_list<value_type> __il) {return assign(__il.begin(), __il.size());}
830 _LIBCPP_INLINE_VISIBILITY basic_string& operator=(const value_type* __s) {return assign(__s);}
831 basic_string& operator=(value_type __c);
833 #if _LIBCPP_DEBUG_LEVEL >= 2
834 _LIBCPP_INLINE_VISIBILITY
835 iterator begin() _NOEXCEPT
836 {return iterator(this, __get_pointer());}
837 _LIBCPP_INLINE_VISIBILITY
838 const_iterator begin() const _NOEXCEPT
839 {return const_iterator(this, __get_pointer());}
840 _LIBCPP_INLINE_VISIBILITY
841 iterator end() _NOEXCEPT
842 {return iterator(this, __get_pointer() + size());}
843 _LIBCPP_INLINE_VISIBILITY
844 const_iterator end() const _NOEXCEPT
845 {return const_iterator(this, __get_pointer() + size());}
847 _LIBCPP_INLINE_VISIBILITY
848 iterator begin() _NOEXCEPT
849 {return iterator(__get_pointer());}
850 _LIBCPP_INLINE_VISIBILITY
851 const_iterator begin() const _NOEXCEPT
852 {return const_iterator(__get_pointer());}
853 _LIBCPP_INLINE_VISIBILITY
854 iterator end() _NOEXCEPT
855 {return iterator(__get_pointer() + size());}
856 _LIBCPP_INLINE_VISIBILITY
857 const_iterator end() const _NOEXCEPT
858 {return const_iterator(__get_pointer() + size());}
859 #endif // _LIBCPP_DEBUG_LEVEL >= 2
860 _LIBCPP_INLINE_VISIBILITY
861 reverse_iterator rbegin() _NOEXCEPT
862 {return reverse_iterator(end());}
863 _LIBCPP_INLINE_VISIBILITY
864 const_reverse_iterator rbegin() const _NOEXCEPT
865 {return const_reverse_iterator(end());}
866 _LIBCPP_INLINE_VISIBILITY
867 reverse_iterator rend() _NOEXCEPT
868 {return reverse_iterator(begin());}
869 _LIBCPP_INLINE_VISIBILITY
870 const_reverse_iterator rend() const _NOEXCEPT
871 {return const_reverse_iterator(begin());}
873 _LIBCPP_INLINE_VISIBILITY
874 const_iterator cbegin() const _NOEXCEPT
876 _LIBCPP_INLINE_VISIBILITY
877 const_iterator cend() const _NOEXCEPT
879 _LIBCPP_INLINE_VISIBILITY
880 const_reverse_iterator crbegin() const _NOEXCEPT
882 _LIBCPP_INLINE_VISIBILITY
883 const_reverse_iterator crend() const _NOEXCEPT
886 _LIBCPP_INLINE_VISIBILITY size_type size() const _NOEXCEPT
887 {return __is_long() ? __get_long_size() : __get_short_size();}
888 _LIBCPP_INLINE_VISIBILITY size_type length() const _NOEXCEPT {return size();}
889 _LIBCPP_INLINE_VISIBILITY size_type max_size() const _NOEXCEPT;
890 _LIBCPP_INLINE_VISIBILITY size_type capacity() const _NOEXCEPT
891 {return (__is_long() ? __get_long_cap()
892 : static_cast<size_type>(__min_cap)) - 1;}
894 void resize(size_type __n, value_type __c);
895 _LIBCPP_INLINE_VISIBILITY void resize(size_type __n) {resize(__n, value_type());}
897 void reserve(size_type __res_arg = 0);
898 _LIBCPP_INLINE_VISIBILITY
899 void shrink_to_fit() _NOEXCEPT {reserve();}
900 _LIBCPP_INLINE_VISIBILITY
901 void clear() _NOEXCEPT;
902 _LIBCPP_INLINE_VISIBILITY bool empty() const _NOEXCEPT {return size() == 0;}
904 _LIBCPP_INLINE_VISIBILITY const_reference operator[](size_type __pos) const _NOEXCEPT;
905 _LIBCPP_INLINE_VISIBILITY reference operator[](size_type __pos) _NOEXCEPT;
907 const_reference at(size_type __n) const;
908 reference at(size_type __n);
910 _LIBCPP_INLINE_VISIBILITY basic_string& operator+=(const basic_string& __str) {return append(__str);}
911 _LIBCPP_INLINE_VISIBILITY basic_string& operator+=(__self_view __sv) {return append(__sv);}
912 _LIBCPP_INLINE_VISIBILITY basic_string& operator+=(const value_type* __s) {return append(__s);}
913 _LIBCPP_INLINE_VISIBILITY basic_string& operator+=(value_type __c) {push_back(__c); return *this;}
914 #ifndef _LIBCPP_CXX03_LANG
915 _LIBCPP_INLINE_VISIBILITY basic_string& operator+=(initializer_list<value_type> __il) {return append(__il);}
916 #endif // _LIBCPP_CXX03_LANG
918 _LIBCPP_INLINE_VISIBILITY
919 basic_string& append(const basic_string& __str);
920 _LIBCPP_INLINE_VISIBILITY
921 basic_string& append(__self_view __sv) { return append(__sv.data(), __sv.size()); }
922 basic_string& append(const basic_string& __str, size_type __pos, size_type __n=npos);
924 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS
927 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value,
930 append(const _Tp& __t, size_type __pos, size_type __n=npos);
931 basic_string& append(const value_type* __s, size_type __n);
932 basic_string& append(const value_type* __s);
933 basic_string& append(size_type __n, value_type __c);
934 template <class _ForwardIterator>
935 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS
936 basic_string& __append_forward_unsafe(_ForwardIterator, _ForwardIterator);
937 template<class _InputIterator>
938 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS
941 __is_exactly_input_iterator<_InputIterator>::value
942 || !__libcpp_string_gets_noexcept_iterator<_InputIterator>::value,
945 _LIBCPP_INLINE_VISIBILITY
946 append(_InputIterator __first, _InputIterator __last) {
947 const basic_string __temp (__first, __last, __alloc());
948 append(__temp.data(), __temp.size());
951 template<class _ForwardIterator>
952 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS
955 __is_forward_iterator<_ForwardIterator>::value
956 && __libcpp_string_gets_noexcept_iterator<_ForwardIterator>::value,
959 _LIBCPP_INLINE_VISIBILITY
960 append(_ForwardIterator __first, _ForwardIterator __last) {
961 return __append_forward_unsafe(__first, __last);
964 #ifndef _LIBCPP_CXX03_LANG
965 _LIBCPP_INLINE_VISIBILITY
966 basic_string& append(initializer_list<value_type> __il) {return append(__il.begin(), __il.size());}
967 #endif // _LIBCPP_CXX03_LANG
969 void push_back(value_type __c);
970 _LIBCPP_INLINE_VISIBILITY
972 _LIBCPP_INLINE_VISIBILITY reference front();
973 _LIBCPP_INLINE_VISIBILITY const_reference front() const;
974 _LIBCPP_INLINE_VISIBILITY reference back();
975 _LIBCPP_INLINE_VISIBILITY const_reference back() const;
977 _LIBCPP_INLINE_VISIBILITY
978 basic_string& assign(__self_view __sv) { return assign(__sv.data(), __sv.size()); }
979 _LIBCPP_INLINE_VISIBILITY
980 basic_string& assign(const basic_string& __str) { return *this = __str; }
981 #ifndef _LIBCPP_CXX03_LANG
982 _LIBCPP_INLINE_VISIBILITY
983 basic_string& assign(basic_string&& __str)
984 _NOEXCEPT_((__noexcept_move_assign_container<_Allocator, __alloc_traits>::value))
985 {*this = _VSTD::move(__str); return *this;}
987 basic_string& assign(const basic_string& __str, size_type __pos, size_type __n=npos);
989 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS
992 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value,
995 assign(const _Tp & __t, size_type __pos, size_type __n=npos);
996 basic_string& assign(const value_type* __s, size_type __n);
997 basic_string& assign(const value_type* __s);
998 basic_string& assign(size_type __n, value_type __c);
999 template<class _InputIterator>
1000 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS
1003 __is_exactly_input_iterator<_InputIterator>::value
1004 || !__libcpp_string_gets_noexcept_iterator<_InputIterator>::value,
1007 assign(_InputIterator __first, _InputIterator __last);
1008 template<class _ForwardIterator>
1009 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS
1012 __is_forward_iterator<_ForwardIterator>::value
1013 && __libcpp_string_gets_noexcept_iterator<_ForwardIterator>::value,
1016 assign(_ForwardIterator __first, _ForwardIterator __last);
1017 #ifndef _LIBCPP_CXX03_LANG
1018 _LIBCPP_INLINE_VISIBILITY
1019 basic_string& assign(initializer_list<value_type> __il) {return assign(__il.begin(), __il.size());}
1020 #endif // _LIBCPP_CXX03_LANG
1022 _LIBCPP_INLINE_VISIBILITY
1023 basic_string& insert(size_type __pos1, const basic_string& __str);
1024 _LIBCPP_INLINE_VISIBILITY
1025 basic_string& insert(size_type __pos1, __self_view __sv) { return insert(__pos1, __sv.data(), __sv.size()); }
1026 template <class _Tp>
1027 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS
1030 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value,
1033 insert(size_type __pos1, const _Tp& __t, size_type __pos2, size_type __n=npos);
1034 basic_string& insert(size_type __pos1, const basic_string& __str, size_type __pos2, size_type __n=npos);
1035 basic_string& insert(size_type __pos, const value_type* __s, size_type __n);
1036 basic_string& insert(size_type __pos, const value_type* __s);
1037 basic_string& insert(size_type __pos, size_type __n, value_type __c);
1038 iterator insert(const_iterator __pos, value_type __c);
1039 _LIBCPP_INLINE_VISIBILITY
1040 iterator insert(const_iterator __pos, size_type __n, value_type __c);
1041 template<class _InputIterator>
1042 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS
1045 __is_exactly_input_iterator<_InputIterator>::value
1046 || !__libcpp_string_gets_noexcept_iterator<_InputIterator>::value,
1049 insert(const_iterator __pos, _InputIterator __first, _InputIterator __last);
1050 template<class _ForwardIterator>
1051 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS
1054 __is_forward_iterator<_ForwardIterator>::value
1055 && __libcpp_string_gets_noexcept_iterator<_ForwardIterator>::value,
1058 insert(const_iterator __pos, _ForwardIterator __first, _ForwardIterator __last);
1059 #ifndef _LIBCPP_CXX03_LANG
1060 _LIBCPP_INLINE_VISIBILITY
1061 iterator insert(const_iterator __pos, initializer_list<value_type> __il)
1062 {return insert(__pos, __il.begin(), __il.end());}
1063 #endif // _LIBCPP_CXX03_LANG
1065 basic_string& erase(size_type __pos = 0, size_type __n = npos);
1066 _LIBCPP_INLINE_VISIBILITY
1067 iterator erase(const_iterator __pos);
1068 _LIBCPP_INLINE_VISIBILITY
1069 iterator erase(const_iterator __first, const_iterator __last);
1071 _LIBCPP_INLINE_VISIBILITY
1072 basic_string& replace(size_type __pos1, size_type __n1, const basic_string& __str);
1073 _LIBCPP_INLINE_VISIBILITY
1074 basic_string& replace(size_type __pos1, size_type __n1, __self_view __sv) { return replace(__pos1, __n1, __sv.data(), __sv.size()); }
1075 basic_string& replace(size_type __pos1, size_type __n1, const basic_string& __str, size_type __pos2, size_type __n2=npos);
1076 template <class _Tp>
1077 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS
1080 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value,
1083 replace(size_type __pos1, size_type __n1, const _Tp& __t, size_type __pos2, size_type __n2=npos);
1084 basic_string& replace(size_type __pos, size_type __n1, const value_type* __s, size_type __n2);
1085 basic_string& replace(size_type __pos, size_type __n1, const value_type* __s);
1086 basic_string& replace(size_type __pos, size_type __n1, size_type __n2, value_type __c);
1087 _LIBCPP_INLINE_VISIBILITY
1088 basic_string& replace(const_iterator __i1, const_iterator __i2, const basic_string& __str);
1089 _LIBCPP_INLINE_VISIBILITY
1090 basic_string& replace(const_iterator __i1, const_iterator __i2, __self_view __sv) { return replace(__i1 - begin(), __i2 - __i1, __sv); }
1091 _LIBCPP_INLINE_VISIBILITY
1092 basic_string& replace(const_iterator __i1, const_iterator __i2, const value_type* __s, size_type __n);
1093 _LIBCPP_INLINE_VISIBILITY
1094 basic_string& replace(const_iterator __i1, const_iterator __i2, const value_type* __s);
1095 _LIBCPP_INLINE_VISIBILITY
1096 basic_string& replace(const_iterator __i1, const_iterator __i2, size_type __n, value_type __c);
1097 template<class _InputIterator>
1098 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS
1101 __is_input_iterator<_InputIterator>::value,
1104 replace(const_iterator __i1, const_iterator __i2, _InputIterator __j1, _InputIterator __j2);
1105 #ifndef _LIBCPP_CXX03_LANG
1106 _LIBCPP_INLINE_VISIBILITY
1107 basic_string& replace(const_iterator __i1, const_iterator __i2, initializer_list<value_type> __il)
1108 {return replace(__i1, __i2, __il.begin(), __il.end());}
1109 #endif // _LIBCPP_CXX03_LANG
1111 size_type copy(value_type* __s, size_type __n, size_type __pos = 0) const;
1112 _LIBCPP_INLINE_VISIBILITY
1113 basic_string substr(size_type __pos = 0, size_type __n = npos) const;
1115 _LIBCPP_INLINE_VISIBILITY
1116 void swap(basic_string& __str)
1117 #if _LIBCPP_STD_VER >= 14
1120 _NOEXCEPT_DEBUG_(!__alloc_traits::propagate_on_container_swap::value ||
1121 __is_nothrow_swappable<allocator_type>::value);
1124 _LIBCPP_INLINE_VISIBILITY
1125 const value_type* c_str() const _NOEXCEPT {return data();}
1126 _LIBCPP_INLINE_VISIBILITY
1127 const value_type* data() const _NOEXCEPT {return _VSTD::__to_raw_pointer(__get_pointer());}
1128 #if _LIBCPP_STD_VER > 14
1129 _LIBCPP_INLINE_VISIBILITY
1130 value_type* data() _NOEXCEPT {return _VSTD::__to_raw_pointer(__get_pointer());}
1133 _LIBCPP_INLINE_VISIBILITY
1134 allocator_type get_allocator() const _NOEXCEPT {return __alloc();}
1136 _LIBCPP_INLINE_VISIBILITY
1137 size_type find(const basic_string& __str, size_type __pos = 0) const _NOEXCEPT;
1138 _LIBCPP_INLINE_VISIBILITY
1139 size_type find(__self_view __sv, size_type __pos = 0) const _NOEXCEPT;
1140 size_type find(const value_type* __s, size_type __pos, size_type __n) const _NOEXCEPT;
1141 _LIBCPP_INLINE_VISIBILITY
1142 size_type find(const value_type* __s, size_type __pos = 0) const _NOEXCEPT;
1143 size_type find(value_type __c, size_type __pos = 0) const _NOEXCEPT;
1145 _LIBCPP_INLINE_VISIBILITY
1146 size_type rfind(const basic_string& __str, size_type __pos = npos) const _NOEXCEPT;
1147 _LIBCPP_INLINE_VISIBILITY
1148 size_type rfind(__self_view __sv, size_type __pos = 0) const _NOEXCEPT;
1149 size_type rfind(const value_type* __s, size_type __pos, size_type __n) const _NOEXCEPT;
1150 _LIBCPP_INLINE_VISIBILITY
1151 size_type rfind(const value_type* __s, size_type __pos = npos) const _NOEXCEPT;
1152 size_type rfind(value_type __c, size_type __pos = npos) const _NOEXCEPT;
1154 _LIBCPP_INLINE_VISIBILITY
1155 size_type find_first_of(const basic_string& __str, size_type __pos = 0) const _NOEXCEPT;
1156 _LIBCPP_INLINE_VISIBILITY
1157 size_type find_first_of(__self_view __sv, size_type __pos = 0) const _NOEXCEPT;
1158 size_type find_first_of(const value_type* __s, size_type __pos, size_type __n) const _NOEXCEPT;
1159 _LIBCPP_INLINE_VISIBILITY
1160 size_type find_first_of(const value_type* __s, size_type __pos = 0) const _NOEXCEPT;
1161 _LIBCPP_INLINE_VISIBILITY
1162 size_type find_first_of(value_type __c, size_type __pos = 0) const _NOEXCEPT;
1164 _LIBCPP_INLINE_VISIBILITY
1165 size_type find_last_of(const basic_string& __str, size_type __pos = npos) const _NOEXCEPT;
1166 _LIBCPP_INLINE_VISIBILITY
1167 size_type find_last_of(__self_view __sv, size_type __pos = 0) const _NOEXCEPT;
1168 size_type find_last_of(const value_type* __s, size_type __pos, size_type __n) const _NOEXCEPT;
1169 _LIBCPP_INLINE_VISIBILITY
1170 size_type find_last_of(const value_type* __s, size_type __pos = npos) const _NOEXCEPT;
1171 _LIBCPP_INLINE_VISIBILITY
1172 size_type find_last_of(value_type __c, size_type __pos = npos) const _NOEXCEPT;
1174 _LIBCPP_INLINE_VISIBILITY
1175 size_type find_first_not_of(const basic_string& __str, size_type __pos = 0) const _NOEXCEPT;
1176 _LIBCPP_INLINE_VISIBILITY
1177 size_type find_first_not_of(__self_view __sv, size_type __pos = 0) const _NOEXCEPT;
1178 size_type find_first_not_of(const value_type* __s, size_type __pos, size_type __n) const _NOEXCEPT;
1179 _LIBCPP_INLINE_VISIBILITY
1180 size_type find_first_not_of(const value_type* __s, size_type __pos = 0) const _NOEXCEPT;
1181 _LIBCPP_INLINE_VISIBILITY
1182 size_type find_first_not_of(value_type __c, size_type __pos = 0) const _NOEXCEPT;
1184 _LIBCPP_INLINE_VISIBILITY
1185 size_type find_last_not_of(const basic_string& __str, size_type __pos = npos) const _NOEXCEPT;
1186 _LIBCPP_INLINE_VISIBILITY
1187 size_type find_last_not_of(__self_view __sv, size_type __pos = 0) const _NOEXCEPT;
1188 size_type find_last_not_of(const value_type* __s, size_type __pos, size_type __n) const _NOEXCEPT;
1189 _LIBCPP_INLINE_VISIBILITY
1190 size_type find_last_not_of(const value_type* __s, size_type __pos = npos) const _NOEXCEPT;
1191 _LIBCPP_INLINE_VISIBILITY
1192 size_type find_last_not_of(value_type __c, size_type __pos = npos) const _NOEXCEPT;
1194 _LIBCPP_INLINE_VISIBILITY
1195 int compare(const basic_string& __str) const _NOEXCEPT;
1196 _LIBCPP_INLINE_VISIBILITY
1197 int compare(__self_view __sv) const _NOEXCEPT;
1198 _LIBCPP_INLINE_VISIBILITY
1199 int compare(size_type __pos1, size_type __n1, __self_view __sv) const;
1200 _LIBCPP_INLINE_VISIBILITY
1201 int compare(size_type __pos1, size_type __n1, const basic_string& __str) const;
1202 int compare(size_type __pos1, size_type __n1, const basic_string& __str, size_type __pos2, size_type __n2=npos) const;
1203 template <class _Tp>
1204 inline _LIBCPP_INLINE_VISIBILITY
1207 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value,
1210 compare(size_type __pos1, size_type __n1, const _Tp& __t, size_type __pos2, size_type __n2=npos) const;
1211 int compare(const value_type* __s) const _NOEXCEPT;
1212 int compare(size_type __pos1, size_type __n1, const value_type* __s) const;
1213 int compare(size_type __pos1, size_type __n1, const value_type* __s, size_type __n2) const;
1215 _LIBCPP_INLINE_VISIBILITY bool __invariants() const;
1217 _LIBCPP_INLINE_VISIBILITY
1218 bool __is_long() const _NOEXCEPT
1219 {return bool(__r_.first().__s.__size_ & __short_mask);}
1221 #if _LIBCPP_DEBUG_LEVEL >= 2
1223 bool __dereferenceable(const const_iterator* __i) const;
1224 bool __decrementable(const const_iterator* __i) const;
1225 bool __addable(const const_iterator* __i, ptrdiff_t __n) const;
1226 bool __subscriptable(const const_iterator* __i, ptrdiff_t __n) const;
1228 #endif // _LIBCPP_DEBUG_LEVEL >= 2
1231 _LIBCPP_INLINE_VISIBILITY
1232 allocator_type& __alloc() _NOEXCEPT
1233 {return __r_.second();}
1234 _LIBCPP_INLINE_VISIBILITY
1235 const allocator_type& __alloc() const _NOEXCEPT
1236 {return __r_.second();}
1238 #ifdef _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT
1240 _LIBCPP_INLINE_VISIBILITY
1241 void __set_short_size(size_type __s) _NOEXCEPT
1242 # if _LIBCPP_BIG_ENDIAN
1243 {__r_.first().__s.__size_ = (unsigned char)(__s << 1);}
1245 {__r_.first().__s.__size_ = (unsigned char)(__s);}
1248 _LIBCPP_INLINE_VISIBILITY
1249 size_type __get_short_size() const _NOEXCEPT
1250 # if _LIBCPP_BIG_ENDIAN
1251 {return __r_.first().__s.__size_ >> 1;}
1253 {return __r_.first().__s.__size_;}
1256 #else // _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT
1258 _LIBCPP_INLINE_VISIBILITY
1259 void __set_short_size(size_type __s) _NOEXCEPT
1260 # if _LIBCPP_BIG_ENDIAN
1261 {__r_.first().__s.__size_ = (unsigned char)(__s);}
1263 {__r_.first().__s.__size_ = (unsigned char)(__s << 1);}
1266 _LIBCPP_INLINE_VISIBILITY
1267 size_type __get_short_size() const _NOEXCEPT
1268 # if _LIBCPP_BIG_ENDIAN
1269 {return __r_.first().__s.__size_;}
1271 {return __r_.first().__s.__size_ >> 1;}
1274 #endif // _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT
1276 _LIBCPP_INLINE_VISIBILITY
1277 void __set_long_size(size_type __s) _NOEXCEPT
1278 {__r_.first().__l.__size_ = __s;}
1279 _LIBCPP_INLINE_VISIBILITY
1280 size_type __get_long_size() const _NOEXCEPT
1281 {return __r_.first().__l.__size_;}
1282 _LIBCPP_INLINE_VISIBILITY
1283 void __set_size(size_type __s) _NOEXCEPT
1284 {if (__is_long()) __set_long_size(__s); else __set_short_size(__s);}
1286 _LIBCPP_INLINE_VISIBILITY
1287 void __set_long_cap(size_type __s) _NOEXCEPT
1288 {__r_.first().__l.__cap_ = __long_mask | __s;}
1289 _LIBCPP_INLINE_VISIBILITY
1290 size_type __get_long_cap() const _NOEXCEPT
1291 {return __r_.first().__l.__cap_ & size_type(~__long_mask);}
1293 _LIBCPP_INLINE_VISIBILITY
1294 void __set_long_pointer(pointer __p) _NOEXCEPT
1295 {__r_.first().__l.__data_ = __p;}
1296 _LIBCPP_INLINE_VISIBILITY
1297 pointer __get_long_pointer() _NOEXCEPT
1298 {return __r_.first().__l.__data_;}
1299 _LIBCPP_INLINE_VISIBILITY
1300 const_pointer __get_long_pointer() const _NOEXCEPT
1301 {return __r_.first().__l.__data_;}
1302 _LIBCPP_INLINE_VISIBILITY
1303 pointer __get_short_pointer() _NOEXCEPT
1304 {return pointer_traits<pointer>::pointer_to(__r_.first().__s.__data_[0]);}
1305 _LIBCPP_INLINE_VISIBILITY
1306 const_pointer __get_short_pointer() const _NOEXCEPT
1307 {return pointer_traits<const_pointer>::pointer_to(__r_.first().__s.__data_[0]);}
1308 _LIBCPP_INLINE_VISIBILITY
1309 pointer __get_pointer() _NOEXCEPT
1310 {return __is_long() ? __get_long_pointer() : __get_short_pointer();}
1311 _LIBCPP_INLINE_VISIBILITY
1312 const_pointer __get_pointer() const _NOEXCEPT
1313 {return __is_long() ? __get_long_pointer() : __get_short_pointer();}
1315 _LIBCPP_INLINE_VISIBILITY
1316 void __zero() _NOEXCEPT
1318 size_type (&__a)[__n_words] = __r_.first().__r.__words;
1319 for (unsigned __i = 0; __i < __n_words; ++__i)
1323 template <size_type __a> static
1324 _LIBCPP_INLINE_VISIBILITY
1325 size_type __align_it(size_type __s) _NOEXCEPT
1326 {return (__s + (__a-1)) & ~(__a-1);}
1327 enum {__alignment = 16};
1328 static _LIBCPP_INLINE_VISIBILITY
1329 size_type __recommend(size_type __s) _NOEXCEPT
1330 {return (__s < __min_cap ? static_cast<size_type>(__min_cap) :
1331 __align_it<sizeof(value_type) < __alignment ?
1332 __alignment/sizeof(value_type) : 1 > (__s+1)) - 1;}
1335 void __init(const value_type* __s, size_type __sz, size_type __reserve);
1337 void __init(const value_type* __s, size_type __sz);
1339 void __init(size_type __n, value_type __c);
1341 template <class _InputIterator>
1345 __is_exactly_input_iterator<_InputIterator>::value,
1348 __init(_InputIterator __first, _InputIterator __last);
1350 template <class _ForwardIterator>
1354 __is_forward_iterator<_ForwardIterator>::value,
1357 __init(_ForwardIterator __first, _ForwardIterator __last);
1359 void __grow_by(size_type __old_cap, size_type __delta_cap, size_type __old_sz,
1360 size_type __n_copy, size_type __n_del, size_type __n_add = 0);
1361 void __grow_by_and_replace(size_type __old_cap, size_type __delta_cap, size_type __old_sz,
1362 size_type __n_copy, size_type __n_del,
1363 size_type __n_add, const value_type* __p_new_stuff);
1365 _LIBCPP_INLINE_VISIBILITY
1366 void __erase_to_end(size_type __pos);
1368 _LIBCPP_INLINE_VISIBILITY
1369 void __copy_assign_alloc(const basic_string& __str)
1370 {__copy_assign_alloc(__str, integral_constant<bool,
1371 __alloc_traits::propagate_on_container_copy_assignment::value>());}
1373 _LIBCPP_INLINE_VISIBILITY
1374 void __copy_assign_alloc(const basic_string& __str, true_type)
1376 if (__alloc() == __str.__alloc())
1377 __alloc() = __str.__alloc();
1380 if (!__str.__is_long())
1384 __alloc() = __str.__alloc();
1388 allocator_type __a = __str.__alloc();
1389 pointer __p = __alloc_traits::allocate(__a, __str.__get_long_cap());
1392 __alloc() = _VSTD::move(__a);
1393 __set_long_pointer(__p);
1394 __set_long_cap(__str.__get_long_cap());
1395 __set_long_size(__str.size());
1400 _LIBCPP_INLINE_VISIBILITY
1401 void __copy_assign_alloc(const basic_string&, false_type) _NOEXCEPT
1404 #ifndef _LIBCPP_CXX03_LANG
1405 _LIBCPP_INLINE_VISIBILITY
1406 void __move_assign(basic_string& __str, false_type)
1407 _NOEXCEPT_(__alloc_traits::is_always_equal::value);
1408 _LIBCPP_INLINE_VISIBILITY
1409 void __move_assign(basic_string& __str, true_type)
1410 #if _LIBCPP_STD_VER > 14
1413 _NOEXCEPT_(is_nothrow_move_assignable<allocator_type>::value);
1417 _LIBCPP_INLINE_VISIBILITY
1419 __move_assign_alloc(basic_string& __str)
1421 !__alloc_traits::propagate_on_container_move_assignment::value ||
1422 is_nothrow_move_assignable<allocator_type>::value)
1423 {__move_assign_alloc(__str, integral_constant<bool,
1424 __alloc_traits::propagate_on_container_move_assignment::value>());}
1426 _LIBCPP_INLINE_VISIBILITY
1427 void __move_assign_alloc(basic_string& __c, true_type)
1428 _NOEXCEPT_(is_nothrow_move_assignable<allocator_type>::value)
1430 __alloc() = _VSTD::move(__c.__alloc());
1433 _LIBCPP_INLINE_VISIBILITY
1434 void __move_assign_alloc(basic_string&, false_type)
1438 _LIBCPP_INLINE_VISIBILITY void __invalidate_all_iterators();
1439 _LIBCPP_INLINE_VISIBILITY void __invalidate_iterators_past(size_type);
1441 friend basic_string operator+<>(const basic_string&, const basic_string&);
1442 friend basic_string operator+<>(const value_type*, const basic_string&);
1443 friend basic_string operator+<>(value_type, const basic_string&);
1444 friend basic_string operator+<>(const basic_string&, const value_type*);
1445 friend basic_string operator+<>(const basic_string&, value_type);
1448 template <class _CharT, class _Traits, class _Allocator>
1449 inline _LIBCPP_INLINE_VISIBILITY
1451 basic_string<_CharT, _Traits, _Allocator>::__invalidate_all_iterators()
1453 #if _LIBCPP_DEBUG_LEVEL >= 2
1454 __get_db()->__invalidate_all(this);
1455 #endif // _LIBCPP_DEBUG_LEVEL >= 2
1458 template <class _CharT, class _Traits, class _Allocator>
1459 inline _LIBCPP_INLINE_VISIBILITY
1461 basic_string<_CharT, _Traits, _Allocator>::__invalidate_iterators_past(size_type
1462 #if _LIBCPP_DEBUG_LEVEL >= 2
1467 #if _LIBCPP_DEBUG_LEVEL >= 2
1468 __c_node* __c = __get_db()->__find_c_and_lock(this);
1471 const_pointer __new_last = __get_pointer() + __pos;
1472 for (__i_node** __p = __c->end_; __p != __c->beg_; )
1475 const_iterator* __i = static_cast<const_iterator*>((*__p)->__i_);
1476 if (__i->base() > __new_last)
1478 (*__p)->__c_ = nullptr;
1479 if (--__c->end_ != __p)
1480 memmove(__p, __p+1, (__c->end_ - __p)*sizeof(__i_node*));
1483 __get_db()->unlock();
1485 #endif // _LIBCPP_DEBUG_LEVEL >= 2
1488 template <class _CharT, class _Traits, class _Allocator>
1489 inline _LIBCPP_INLINE_VISIBILITY
1490 basic_string<_CharT, _Traits, _Allocator>::basic_string()
1491 _NOEXCEPT_(is_nothrow_default_constructible<allocator_type>::value)
1493 #if _LIBCPP_DEBUG_LEVEL >= 2
1494 __get_db()->__insert_c(this);
1499 template <class _CharT, class _Traits, class _Allocator>
1500 inline _LIBCPP_INLINE_VISIBILITY
1501 basic_string<_CharT, _Traits, _Allocator>::basic_string(const allocator_type& __a)
1502 #if _LIBCPP_STD_VER <= 14
1503 _NOEXCEPT_(is_nothrow_copy_constructible<allocator_type>::value)
1507 : __r_(__second_tag(), __a)
1509 #if _LIBCPP_DEBUG_LEVEL >= 2
1510 __get_db()->__insert_c(this);
1515 template <class _CharT, class _Traits, class _Allocator>
1516 void basic_string<_CharT, _Traits, _Allocator>::__init(const value_type* __s,
1518 size_type __reserve)
1520 if (__reserve > max_size())
1521 this->__throw_length_error();
1523 if (__reserve < __min_cap)
1525 __set_short_size(__sz);
1526 __p = __get_short_pointer();
1530 size_type __cap = __recommend(__reserve);
1531 __p = __alloc_traits::allocate(__alloc(), __cap+1);
1532 __set_long_pointer(__p);
1533 __set_long_cap(__cap+1);
1534 __set_long_size(__sz);
1536 traits_type::copy(_VSTD::__to_raw_pointer(__p), __s, __sz);
1537 traits_type::assign(__p[__sz], value_type());
1540 template <class _CharT, class _Traits, class _Allocator>
1542 basic_string<_CharT, _Traits, _Allocator>::__init(const value_type* __s, size_type __sz)
1544 if (__sz > max_size())
1545 this->__throw_length_error();
1547 if (__sz < __min_cap)
1549 __set_short_size(__sz);
1550 __p = __get_short_pointer();
1554 size_type __cap = __recommend(__sz);
1555 __p = __alloc_traits::allocate(__alloc(), __cap+1);
1556 __set_long_pointer(__p);
1557 __set_long_cap(__cap+1);
1558 __set_long_size(__sz);
1560 traits_type::copy(_VSTD::__to_raw_pointer(__p), __s, __sz);
1561 traits_type::assign(__p[__sz], value_type());
1564 template <class _CharT, class _Traits, class _Allocator>
1565 inline _LIBCPP_INLINE_VISIBILITY
1566 basic_string<_CharT, _Traits, _Allocator>::basic_string(const _CharT* __s)
1568 _LIBCPP_ASSERT(__s != nullptr, "basic_string(const char*) detected nullptr");
1569 __init(__s, traits_type::length(__s));
1570 #if _LIBCPP_DEBUG_LEVEL >= 2
1571 __get_db()->__insert_c(this);
1575 template <class _CharT, class _Traits, class _Allocator>
1576 inline _LIBCPP_INLINE_VISIBILITY
1577 basic_string<_CharT, _Traits, _Allocator>::basic_string(const _CharT* __s, const _Allocator& __a)
1578 : __r_(__second_tag(), __a)
1580 _LIBCPP_ASSERT(__s != nullptr, "basic_string(const char*, allocator) detected nullptr");
1581 __init(__s, traits_type::length(__s));
1582 #if _LIBCPP_DEBUG_LEVEL >= 2
1583 __get_db()->__insert_c(this);
1587 template <class _CharT, class _Traits, class _Allocator>
1588 inline _LIBCPP_INLINE_VISIBILITY
1589 basic_string<_CharT, _Traits, _Allocator>::basic_string(const _CharT* __s, size_type __n)
1591 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "basic_string(const char*, n) detected nullptr");
1593 #if _LIBCPP_DEBUG_LEVEL >= 2
1594 __get_db()->__insert_c(this);
1598 template <class _CharT, class _Traits, class _Allocator>
1599 inline _LIBCPP_INLINE_VISIBILITY
1600 basic_string<_CharT, _Traits, _Allocator>::basic_string(const _CharT* __s, size_type __n, const _Allocator& __a)
1601 : __r_(__second_tag(), __a)
1603 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "basic_string(const char*, n, allocator) detected nullptr");
1605 #if _LIBCPP_DEBUG_LEVEL >= 2
1606 __get_db()->__insert_c(this);
1610 template <class _CharT, class _Traits, class _Allocator>
1611 basic_string<_CharT, _Traits, _Allocator>::basic_string(const basic_string& __str)
1612 : __r_(__second_tag(), __alloc_traits::select_on_container_copy_construction(__str.__alloc()))
1614 if (!__str.__is_long())
1615 __r_.first().__r = __str.__r_.first().__r;
1617 __init(_VSTD::__to_raw_pointer(__str.__get_long_pointer()), __str.__get_long_size());
1618 #if _LIBCPP_DEBUG_LEVEL >= 2
1619 __get_db()->__insert_c(this);
1623 template <class _CharT, class _Traits, class _Allocator>
1624 basic_string<_CharT, _Traits, _Allocator>::basic_string(
1625 const basic_string& __str, const allocator_type& __a)
1626 : __r_(__second_tag(), __a)
1628 if (!__str.__is_long())
1629 __r_.first().__r = __str.__r_.first().__r;
1631 __init(_VSTD::__to_raw_pointer(__str.__get_long_pointer()), __str.__get_long_size());
1632 #if _LIBCPP_DEBUG_LEVEL >= 2
1633 __get_db()->__insert_c(this);
1637 #ifndef _LIBCPP_CXX03_LANG
1639 template <class _CharT, class _Traits, class _Allocator>
1640 inline _LIBCPP_INLINE_VISIBILITY
1641 basic_string<_CharT, _Traits, _Allocator>::basic_string(basic_string&& __str)
1642 #if _LIBCPP_STD_VER <= 14
1643 _NOEXCEPT_(is_nothrow_move_constructible<allocator_type>::value)
1647 : __r_(_VSTD::move(__str.__r_))
1650 #if _LIBCPP_DEBUG_LEVEL >= 2
1651 __get_db()->__insert_c(this);
1653 __get_db()->swap(this, &__str);
1657 template <class _CharT, class _Traits, class _Allocator>
1658 inline _LIBCPP_INLINE_VISIBILITY
1659 basic_string<_CharT, _Traits, _Allocator>::basic_string(basic_string&& __str, const allocator_type& __a)
1660 : __r_(__second_tag(), __a)
1662 if (__str.__is_long() && __a != __str.__alloc()) // copy, not move
1663 __init(_VSTD::__to_raw_pointer(__str.__get_long_pointer()), __str.__get_long_size());
1666 __r_.first().__r = __str.__r_.first().__r;
1669 #if _LIBCPP_DEBUG_LEVEL >= 2
1670 __get_db()->__insert_c(this);
1672 __get_db()->swap(this, &__str);
1676 #endif // _LIBCPP_CXX03_LANG
1678 template <class _CharT, class _Traits, class _Allocator>
1680 basic_string<_CharT, _Traits, _Allocator>::__init(size_type __n, value_type __c)
1682 if (__n > max_size())
1683 this->__throw_length_error();
1685 if (__n < __min_cap)
1687 __set_short_size(__n);
1688 __p = __get_short_pointer();
1692 size_type __cap = __recommend(__n);
1693 __p = __alloc_traits::allocate(__alloc(), __cap+1);
1694 __set_long_pointer(__p);
1695 __set_long_cap(__cap+1);
1696 __set_long_size(__n);
1698 traits_type::assign(_VSTD::__to_raw_pointer(__p), __n, __c);
1699 traits_type::assign(__p[__n], value_type());
1702 template <class _CharT, class _Traits, class _Allocator>
1703 inline _LIBCPP_INLINE_VISIBILITY
1704 basic_string<_CharT, _Traits, _Allocator>::basic_string(size_type __n, _CharT __c)
1707 #if _LIBCPP_DEBUG_LEVEL >= 2
1708 __get_db()->__insert_c(this);
1712 template <class _CharT, class _Traits, class _Allocator>
1713 inline _LIBCPP_INLINE_VISIBILITY
1714 basic_string<_CharT, _Traits, _Allocator>::basic_string(size_type __n, _CharT __c, const _Allocator& __a)
1715 : __r_(__second_tag(), __a)
1718 #if _LIBCPP_DEBUG_LEVEL >= 2
1719 __get_db()->__insert_c(this);
1723 template <class _CharT, class _Traits, class _Allocator>
1724 basic_string<_CharT, _Traits, _Allocator>::basic_string(const basic_string& __str,
1725 size_type __pos, size_type __n,
1726 const _Allocator& __a)
1727 : __r_(__second_tag(), __a)
1729 size_type __str_sz = __str.size();
1730 if (__pos > __str_sz)
1731 this->__throw_out_of_range();
1732 __init(__str.data() + __pos, _VSTD::min(__n, __str_sz - __pos));
1733 #if _LIBCPP_DEBUG_LEVEL >= 2
1734 __get_db()->__insert_c(this);
1738 template <class _CharT, class _Traits, class _Allocator>
1739 inline _LIBCPP_INLINE_VISIBILITY
1740 basic_string<_CharT, _Traits, _Allocator>::basic_string(const basic_string& __str, size_type __pos,
1741 const _Allocator& __a)
1742 : __r_(__second_tag(), __a)
1744 size_type __str_sz = __str.size();
1745 if (__pos > __str_sz)
1746 this->__throw_out_of_range();
1747 __init(__str.data() + __pos, __str_sz - __pos);
1748 #if _LIBCPP_DEBUG_LEVEL >= 2
1749 __get_db()->__insert_c(this);
1753 template <class _CharT, class _Traits, class _Allocator>
1754 template <class _Tp>
1755 basic_string<_CharT, _Traits, _Allocator>::basic_string(
1756 const _Tp& __t, size_type __pos, size_type __n, const allocator_type& __a,
1757 typename enable_if<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, void>::type *)
1758 : __r_(__second_tag(), __a)
1760 __self_view __sv = __self_view(__t).substr(__pos, __n);
1761 __init(__sv.data(), __sv.size());
1762 #if _LIBCPP_DEBUG_LEVEL >= 2
1763 __get_db()->__insert_c(this);
1767 template <class _CharT, class _Traits, class _Allocator>
1768 inline _LIBCPP_INLINE_VISIBILITY
1769 basic_string<_CharT, _Traits, _Allocator>::basic_string(__self_view __sv)
1771 __init(__sv.data(), __sv.size());
1772 #if _LIBCPP_DEBUG_LEVEL >= 2
1773 __get_db()->__insert_c(this);
1777 template <class _CharT, class _Traits, class _Allocator>
1778 inline _LIBCPP_INLINE_VISIBILITY
1779 basic_string<_CharT, _Traits, _Allocator>::basic_string(__self_view __sv, const _Allocator& __a)
1780 : __r_(__second_tag(), __a)
1782 __init(__sv.data(), __sv.size());
1783 #if _LIBCPP_DEBUG_LEVEL >= 2
1784 __get_db()->__insert_c(this);
1788 template <class _CharT, class _Traits, class _Allocator>
1789 template <class _InputIterator>
1792 __is_exactly_input_iterator<_InputIterator>::value,
1795 basic_string<_CharT, _Traits, _Allocator>::__init(_InputIterator __first, _InputIterator __last)
1798 #ifndef _LIBCPP_NO_EXCEPTIONS
1801 #endif // _LIBCPP_NO_EXCEPTIONS
1802 for (; __first != __last; ++__first)
1803 push_back(*__first);
1804 #ifndef _LIBCPP_NO_EXCEPTIONS
1809 __alloc_traits::deallocate(__alloc(), __get_long_pointer(), __get_long_cap());
1812 #endif // _LIBCPP_NO_EXCEPTIONS
1815 template <class _CharT, class _Traits, class _Allocator>
1816 template <class _ForwardIterator>
1819 __is_forward_iterator<_ForwardIterator>::value,
1822 basic_string<_CharT, _Traits, _Allocator>::__init(_ForwardIterator __first, _ForwardIterator __last)
1824 size_type __sz = static_cast<size_type>(_VSTD::distance(__first, __last));
1825 if (__sz > max_size())
1826 this->__throw_length_error();
1828 if (__sz < __min_cap)
1830 __set_short_size(__sz);
1831 __p = __get_short_pointer();
1835 size_type __cap = __recommend(__sz);
1836 __p = __alloc_traits::allocate(__alloc(), __cap+1);
1837 __set_long_pointer(__p);
1838 __set_long_cap(__cap+1);
1839 __set_long_size(__sz);
1841 for (; __first != __last; ++__first, (void) ++__p)
1842 traits_type::assign(*__p, *__first);
1843 traits_type::assign(*__p, value_type());
1846 template <class _CharT, class _Traits, class _Allocator>
1847 template<class _InputIterator>
1848 inline _LIBCPP_INLINE_VISIBILITY
1849 basic_string<_CharT, _Traits, _Allocator>::basic_string(_InputIterator __first, _InputIterator __last)
1851 __init(__first, __last);
1852 #if _LIBCPP_DEBUG_LEVEL >= 2
1853 __get_db()->__insert_c(this);
1857 template <class _CharT, class _Traits, class _Allocator>
1858 template<class _InputIterator>
1859 inline _LIBCPP_INLINE_VISIBILITY
1860 basic_string<_CharT, _Traits, _Allocator>::basic_string(_InputIterator __first, _InputIterator __last,
1861 const allocator_type& __a)
1862 : __r_(__second_tag(), __a)
1864 __init(__first, __last);
1865 #if _LIBCPP_DEBUG_LEVEL >= 2
1866 __get_db()->__insert_c(this);
1870 #ifndef _LIBCPP_CXX03_LANG
1872 template <class _CharT, class _Traits, class _Allocator>
1873 inline _LIBCPP_INLINE_VISIBILITY
1874 basic_string<_CharT, _Traits, _Allocator>::basic_string(
1875 initializer_list<_CharT> __il)
1877 __init(__il.begin(), __il.end());
1878 #if _LIBCPP_DEBUG_LEVEL >= 2
1879 __get_db()->__insert_c(this);
1883 template <class _CharT, class _Traits, class _Allocator>
1884 inline _LIBCPP_INLINE_VISIBILITY
1886 basic_string<_CharT, _Traits, _Allocator>::basic_string(
1887 initializer_list<_CharT> __il, const _Allocator& __a)
1888 : __r_(__second_tag(), __a)
1890 __init(__il.begin(), __il.end());
1891 #if _LIBCPP_DEBUG_LEVEL >= 2
1892 __get_db()->__insert_c(this);
1896 #endif // _LIBCPP_CXX03_LANG
1898 template <class _CharT, class _Traits, class _Allocator>
1899 basic_string<_CharT, _Traits, _Allocator>::~basic_string()
1901 #if _LIBCPP_DEBUG_LEVEL >= 2
1902 __get_db()->__erase_c(this);
1905 __alloc_traits::deallocate(__alloc(), __get_long_pointer(), __get_long_cap());
1908 template <class _CharT, class _Traits, class _Allocator>
1910 basic_string<_CharT, _Traits, _Allocator>::__grow_by_and_replace
1911 (size_type __old_cap, size_type __delta_cap, size_type __old_sz,
1912 size_type __n_copy, size_type __n_del, size_type __n_add, const value_type* __p_new_stuff)
1914 size_type __ms = max_size();
1915 if (__delta_cap > __ms - __old_cap - 1)
1916 this->__throw_length_error();
1917 pointer __old_p = __get_pointer();
1918 size_type __cap = __old_cap < __ms / 2 - __alignment ?
1919 __recommend(_VSTD::max(__old_cap + __delta_cap, 2 * __old_cap)) :
1921 pointer __p = __alloc_traits::allocate(__alloc(), __cap+1);
1922 __invalidate_all_iterators();
1924 traits_type::copy(_VSTD::__to_raw_pointer(__p),
1925 _VSTD::__to_raw_pointer(__old_p), __n_copy);
1927 traits_type::copy(_VSTD::__to_raw_pointer(__p) + __n_copy, __p_new_stuff, __n_add);
1928 size_type __sec_cp_sz = __old_sz - __n_del - __n_copy;
1929 if (__sec_cp_sz != 0)
1930 traits_type::copy(_VSTD::__to_raw_pointer(__p) + __n_copy + __n_add,
1931 _VSTD::__to_raw_pointer(__old_p) + __n_copy + __n_del, __sec_cp_sz);
1932 if (__old_cap+1 != __min_cap)
1933 __alloc_traits::deallocate(__alloc(), __old_p, __old_cap+1);
1934 __set_long_pointer(__p);
1935 __set_long_cap(__cap+1);
1936 __old_sz = __n_copy + __n_add + __sec_cp_sz;
1937 __set_long_size(__old_sz);
1938 traits_type::assign(__p[__old_sz], value_type());
1941 template <class _CharT, class _Traits, class _Allocator>
1943 basic_string<_CharT, _Traits, _Allocator>::__grow_by(size_type __old_cap, size_type __delta_cap, size_type __old_sz,
1944 size_type __n_copy, size_type __n_del, size_type __n_add)
1946 size_type __ms = max_size();
1947 if (__delta_cap > __ms - __old_cap)
1948 this->__throw_length_error();
1949 pointer __old_p = __get_pointer();
1950 size_type __cap = __old_cap < __ms / 2 - __alignment ?
1951 __recommend(_VSTD::max(__old_cap + __delta_cap, 2 * __old_cap)) :
1953 pointer __p = __alloc_traits::allocate(__alloc(), __cap+1);
1954 __invalidate_all_iterators();
1956 traits_type::copy(_VSTD::__to_raw_pointer(__p),
1957 _VSTD::__to_raw_pointer(__old_p), __n_copy);
1958 size_type __sec_cp_sz = __old_sz - __n_del - __n_copy;
1959 if (__sec_cp_sz != 0)
1960 traits_type::copy(_VSTD::__to_raw_pointer(__p) + __n_copy + __n_add,
1961 _VSTD::__to_raw_pointer(__old_p) + __n_copy + __n_del,
1963 if (__old_cap+1 != __min_cap)
1964 __alloc_traits::deallocate(__alloc(), __old_p, __old_cap+1);
1965 __set_long_pointer(__p);
1966 __set_long_cap(__cap+1);
1971 template <class _CharT, class _Traits, class _Allocator>
1972 basic_string<_CharT, _Traits, _Allocator>&
1973 basic_string<_CharT, _Traits, _Allocator>::assign(const value_type* __s, size_type __n)
1975 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::assign received nullptr");
1976 size_type __cap = capacity();
1979 value_type* __p = _VSTD::__to_raw_pointer(__get_pointer());
1980 traits_type::move(__p, __s, __n);
1981 traits_type::assign(__p[__n], value_type());
1983 __invalidate_iterators_past(__n);
1987 size_type __sz = size();
1988 __grow_by_and_replace(__cap, __n - __cap, __sz, 0, __sz, __n, __s);
1993 template <class _CharT, class _Traits, class _Allocator>
1994 basic_string<_CharT, _Traits, _Allocator>&
1995 basic_string<_CharT, _Traits, _Allocator>::assign(size_type __n, value_type __c)
1997 size_type __cap = capacity();
2000 size_type __sz = size();
2001 __grow_by(__cap, __n - __cap, __sz, 0, __sz);
2004 __invalidate_iterators_past(__n);
2005 value_type* __p = _VSTD::__to_raw_pointer(__get_pointer());
2006 traits_type::assign(__p, __n, __c);
2007 traits_type::assign(__p[__n], value_type());
2012 template <class _CharT, class _Traits, class _Allocator>
2013 basic_string<_CharT, _Traits, _Allocator>&
2014 basic_string<_CharT, _Traits, _Allocator>::operator=(value_type __c)
2019 __p = __get_long_pointer();
2024 __p = __get_short_pointer();
2025 __set_short_size(1);
2027 traits_type::assign(*__p, __c);
2028 traits_type::assign(*++__p, value_type());
2029 __invalidate_iterators_past(1);
2033 template <class _CharT, class _Traits, class _Allocator>
2034 basic_string<_CharT, _Traits, _Allocator>&
2035 basic_string<_CharT, _Traits, _Allocator>::operator=(const basic_string& __str)
2039 __copy_assign_alloc(__str);
2040 assign(__str.data(), __str.size());
2045 #ifndef _LIBCPP_CXX03_LANG
2047 template <class _CharT, class _Traits, class _Allocator>
2048 inline _LIBCPP_INLINE_VISIBILITY
2050 basic_string<_CharT, _Traits, _Allocator>::__move_assign(basic_string& __str, false_type)
2051 _NOEXCEPT_(__alloc_traits::is_always_equal::value)
2053 if (__alloc() != __str.__alloc())
2056 __move_assign(__str, true_type());
2059 template <class _CharT, class _Traits, class _Allocator>
2060 inline _LIBCPP_INLINE_VISIBILITY
2062 basic_string<_CharT, _Traits, _Allocator>::__move_assign(basic_string& __str, true_type)
2063 #if _LIBCPP_STD_VER > 14
2066 _NOEXCEPT_(is_nothrow_move_assignable<allocator_type>::value)
2071 __r_.first() = __str.__r_.first();
2072 __move_assign_alloc(__str);
2076 template <class _CharT, class _Traits, class _Allocator>
2077 inline _LIBCPP_INLINE_VISIBILITY
2078 basic_string<_CharT, _Traits, _Allocator>&
2079 basic_string<_CharT, _Traits, _Allocator>::operator=(basic_string&& __str)
2080 _NOEXCEPT_((__noexcept_move_assign_container<_Allocator, __alloc_traits>::value))
2082 __move_assign(__str, integral_constant<bool,
2083 __alloc_traits::propagate_on_container_move_assignment::value>());
2089 template <class _CharT, class _Traits, class _Allocator>
2090 template<class _InputIterator>
2093 __is_exactly_input_iterator <_InputIterator>::value
2094 || !__libcpp_string_gets_noexcept_iterator<_InputIterator>::value,
2095 basic_string<_CharT, _Traits, _Allocator>&
2097 basic_string<_CharT, _Traits, _Allocator>::assign(_InputIterator __first, _InputIterator __last)
2099 const basic_string __temp(__first, __last, __alloc());
2100 assign(__temp.data(), __temp.size());
2104 template <class _CharT, class _Traits, class _Allocator>
2105 template<class _ForwardIterator>
2108 __is_forward_iterator<_ForwardIterator>::value
2109 && __libcpp_string_gets_noexcept_iterator<_ForwardIterator>::value,
2110 basic_string<_CharT, _Traits, _Allocator>&
2112 basic_string<_CharT, _Traits, _Allocator>::assign(_ForwardIterator __first, _ForwardIterator __last)
2114 size_type __n = static_cast<size_type>(_VSTD::distance(__first, __last));
2115 size_type __cap = capacity();
2118 size_type __sz = size();
2119 __grow_by(__cap, __n - __cap, __sz, 0, __sz);
2122 __invalidate_iterators_past(__n);
2123 pointer __p = __get_pointer();
2124 for (; __first != __last; ++__first, ++__p)
2125 traits_type::assign(*__p, *__first);
2126 traits_type::assign(*__p, value_type());
2131 template <class _CharT, class _Traits, class _Allocator>
2132 basic_string<_CharT, _Traits, _Allocator>&
2133 basic_string<_CharT, _Traits, _Allocator>::assign(const basic_string& __str, size_type __pos, size_type __n)
2135 size_type __sz = __str.size();
2137 this->__throw_out_of_range();
2138 return assign(__str.data() + __pos, _VSTD::min(__n, __sz - __pos));
2141 template <class _CharT, class _Traits, class _Allocator>
2142 template <class _Tp>
2145 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value,
2146 basic_string<_CharT, _Traits, _Allocator>&
2148 basic_string<_CharT, _Traits, _Allocator>::assign(const _Tp & __t, size_type __pos, size_type __n)
2150 __self_view __sv = __t;
2151 size_type __sz = __sv.size();
2153 this->__throw_out_of_range();
2154 return assign(__sv.data() + __pos, _VSTD::min(__n, __sz - __pos));
2158 template <class _CharT, class _Traits, class _Allocator>
2159 basic_string<_CharT, _Traits, _Allocator>&
2160 basic_string<_CharT, _Traits, _Allocator>::assign(const value_type* __s)
2162 _LIBCPP_ASSERT(__s != nullptr, "string::assign received nullptr");
2163 return assign(__s, traits_type::length(__s));
2168 template <class _CharT, class _Traits, class _Allocator>
2169 basic_string<_CharT, _Traits, _Allocator>&
2170 basic_string<_CharT, _Traits, _Allocator>::append(const value_type* __s, size_type __n)
2172 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::append received nullptr");
2173 size_type __cap = capacity();
2174 size_type __sz = size();
2175 if (__cap - __sz >= __n)
2179 value_type* __p = _VSTD::__to_raw_pointer(__get_pointer());
2180 traits_type::copy(__p + __sz, __s, __n);
2183 traits_type::assign(__p[__sz], value_type());
2187 __grow_by_and_replace(__cap, __sz + __n - __cap, __sz, __sz, 0, __n, __s);
2191 template <class _CharT, class _Traits, class _Allocator>
2192 basic_string<_CharT, _Traits, _Allocator>&
2193 basic_string<_CharT, _Traits, _Allocator>::append(size_type __n, value_type __c)
2197 size_type __cap = capacity();
2198 size_type __sz = size();
2199 if (__cap - __sz < __n)
2200 __grow_by(__cap, __sz + __n - __cap, __sz, __sz, 0);
2201 pointer __p = __get_pointer();
2202 traits_type::assign(_VSTD::__to_raw_pointer(__p) + __sz, __n, __c);
2205 traits_type::assign(__p[__sz], value_type());
2210 template <class _CharT, class _Traits, class _Allocator>
2212 basic_string<_CharT, _Traits, _Allocator>::push_back(value_type __c)
2214 bool __is_short = !__is_long();
2219 __cap = __min_cap - 1;
2220 __sz = __get_short_size();
2224 __cap = __get_long_cap() - 1;
2225 __sz = __get_long_size();
2229 __grow_by(__cap, 1, __sz, __sz, 0);
2230 __is_short = !__is_long();
2235 __p = __get_short_pointer() + __sz;
2236 __set_short_size(__sz+1);
2240 __p = __get_long_pointer() + __sz;
2241 __set_long_size(__sz+1);
2243 traits_type::assign(*__p, __c);
2244 traits_type::assign(*++__p, value_type());
2247 template <class _Tp>
2248 bool __ptr_in_range (const _Tp* __p, const _Tp* __first, const _Tp* __last)
2250 return __first <= __p && __p < __last;
2253 template <class _Tp1, class _Tp2>
2254 bool __ptr_in_range (const _Tp1*, const _Tp2*, const _Tp2*)
2259 template <class _CharT, class _Traits, class _Allocator>
2260 template<class _ForwardIterator>
2261 basic_string<_CharT, _Traits, _Allocator>&
2262 basic_string<_CharT, _Traits, _Allocator>::__append_forward_unsafe(
2263 _ForwardIterator __first, _ForwardIterator __last)
2265 static_assert(__is_forward_iterator<_ForwardIterator>::value,
2266 "function requires a ForwardIterator");
2267 size_type __sz = size();
2268 size_type __cap = capacity();
2269 size_type __n = static_cast<size_type>(_VSTD::distance(__first, __last));
2272 typedef typename iterator_traits<_ForwardIterator>::reference _CharRef;
2273 _CharRef __tmp_ref = *__first;
2274 if (__ptr_in_range(_VSTD::addressof(__tmp_ref), data(), data() + size()))
2276 const basic_string __temp (__first, __last, __alloc());
2277 append(__temp.data(), __temp.size());
2281 if (__cap - __sz < __n)
2282 __grow_by(__cap, __sz + __n - __cap, __sz, __sz, 0);
2283 pointer __p = __get_pointer() + __sz;
2284 for (; __first != __last; ++__p, ++__first)
2285 traits_type::assign(*__p, *__first);
2286 traits_type::assign(*__p, value_type());
2287 __set_size(__sz + __n);
2293 template <class _CharT, class _Traits, class _Allocator>
2294 inline _LIBCPP_INLINE_VISIBILITY
2295 basic_string<_CharT, _Traits, _Allocator>&
2296 basic_string<_CharT, _Traits, _Allocator>::append(const basic_string& __str)
2298 return append(__str.data(), __str.size());
2301 template <class _CharT, class _Traits, class _Allocator>
2302 basic_string<_CharT, _Traits, _Allocator>&
2303 basic_string<_CharT, _Traits, _Allocator>::append(const basic_string& __str, size_type __pos, size_type __n)
2305 size_type __sz = __str.size();
2307 this->__throw_out_of_range();
2308 return append(__str.data() + __pos, _VSTD::min(__n, __sz - __pos));
2311 template <class _CharT, class _Traits, class _Allocator>
2312 template <class _Tp>
2315 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value,
2316 basic_string<_CharT, _Traits, _Allocator>&
2318 basic_string<_CharT, _Traits, _Allocator>::append(const _Tp & __t, size_type __pos, size_type __n)
2320 __self_view __sv = __t;
2321 size_type __sz = __sv.size();
2323 this->__throw_out_of_range();
2324 return append(__sv.data() + __pos, _VSTD::min(__n, __sz - __pos));
2327 template <class _CharT, class _Traits, class _Allocator>
2328 basic_string<_CharT, _Traits, _Allocator>&
2329 basic_string<_CharT, _Traits, _Allocator>::append(const value_type* __s)
2331 _LIBCPP_ASSERT(__s != nullptr, "string::append received nullptr");
2332 return append(__s, traits_type::length(__s));
2337 template <class _CharT, class _Traits, class _Allocator>
2338 basic_string<_CharT, _Traits, _Allocator>&
2339 basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos, const value_type* __s, size_type __n)
2341 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::insert received nullptr");
2342 size_type __sz = size();
2344 this->__throw_out_of_range();
2345 size_type __cap = capacity();
2346 if (__cap - __sz >= __n)
2350 value_type* __p = _VSTD::__to_raw_pointer(__get_pointer());
2351 size_type __n_move = __sz - __pos;
2354 if (__p + __pos <= __s && __s < __p + __sz)
2356 traits_type::move(__p + __pos + __n, __p + __pos, __n_move);
2358 traits_type::move(__p + __pos, __s, __n);
2361 traits_type::assign(__p[__sz], value_type());
2365 __grow_by_and_replace(__cap, __sz + __n - __cap, __sz, __pos, 0, __n, __s);
2369 template <class _CharT, class _Traits, class _Allocator>
2370 basic_string<_CharT, _Traits, _Allocator>&
2371 basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos, size_type __n, value_type __c)
2373 size_type __sz = size();
2375 this->__throw_out_of_range();
2378 size_type __cap = capacity();
2380 if (__cap - __sz >= __n)
2382 __p = _VSTD::__to_raw_pointer(__get_pointer());
2383 size_type __n_move = __sz - __pos;
2385 traits_type::move(__p + __pos + __n, __p + __pos, __n_move);
2389 __grow_by(__cap, __sz + __n - __cap, __sz, __pos, 0, __n);
2390 __p = _VSTD::__to_raw_pointer(__get_long_pointer());
2392 traits_type::assign(__p + __pos, __n, __c);
2395 traits_type::assign(__p[__sz], value_type());
2400 template <class _CharT, class _Traits, class _Allocator>
2401 template<class _InputIterator>
2404 __is_exactly_input_iterator<_InputIterator>::value
2405 || !__libcpp_string_gets_noexcept_iterator<_InputIterator>::value,
2406 typename basic_string<_CharT, _Traits, _Allocator>::iterator
2408 basic_string<_CharT, _Traits, _Allocator>::insert(const_iterator __pos, _InputIterator __first, _InputIterator __last)
2410 #if _LIBCPP_DEBUG_LEVEL >= 2
2411 _LIBCPP_ASSERT(__get_const_db()->__find_c_from_i(&__pos) == this,
2412 "string::insert(iterator, range) called with an iterator not"
2413 " referring to this string");
2415 const basic_string __temp(__first, __last, __alloc());
2416 return insert(__pos, __temp.data(), __temp.data() + __temp.size());
2419 template <class _CharT, class _Traits, class _Allocator>
2420 template<class _ForwardIterator>
2423 __is_forward_iterator<_ForwardIterator>::value
2424 && __libcpp_string_gets_noexcept_iterator<_ForwardIterator>::value,
2425 typename basic_string<_CharT, _Traits, _Allocator>::iterator
2427 basic_string<_CharT, _Traits, _Allocator>::insert(const_iterator __pos, _ForwardIterator __first, _ForwardIterator __last)
2429 #if _LIBCPP_DEBUG_LEVEL >= 2
2430 _LIBCPP_ASSERT(__get_const_db()->__find_c_from_i(&__pos) == this,
2431 "string::insert(iterator, range) called with an iterator not"
2432 " referring to this string");
2434 size_type __ip = static_cast<size_type>(__pos - begin());
2435 size_type __n = static_cast<size_type>(_VSTD::distance(__first, __last));
2438 typedef typename iterator_traits<_ForwardIterator>::reference _CharRef;
2439 _CharRef __tmp_char = *__first;
2440 if (__ptr_in_range(_VSTD::addressof(__tmp_char), data(), data() + size()))
2442 const basic_string __temp(__first, __last, __alloc());
2443 return insert(__pos, __temp.data(), __temp.data() + __temp.size());
2446 size_type __sz = size();
2447 size_type __cap = capacity();
2449 if (__cap - __sz >= __n)
2451 __p = _VSTD::__to_raw_pointer(__get_pointer());
2452 size_type __n_move = __sz - __ip;
2454 traits_type::move(__p + __ip + __n, __p + __ip, __n_move);
2458 __grow_by(__cap, __sz + __n - __cap, __sz, __ip, 0, __n);
2459 __p = _VSTD::__to_raw_pointer(__get_long_pointer());
2463 traits_type::assign(__p[__sz], value_type());
2464 for (__p += __ip; __first != __last; ++__p, ++__first)
2465 traits_type::assign(*__p, *__first);
2467 return begin() + __ip;
2470 template <class _CharT, class _Traits, class _Allocator>
2471 inline _LIBCPP_INLINE_VISIBILITY
2472 basic_string<_CharT, _Traits, _Allocator>&
2473 basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos1, const basic_string& __str)
2475 return insert(__pos1, __str.data(), __str.size());
2478 template <class _CharT, class _Traits, class _Allocator>
2479 basic_string<_CharT, _Traits, _Allocator>&
2480 basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos1, const basic_string& __str,
2481 size_type __pos2, size_type __n)
2483 size_type __str_sz = __str.size();
2484 if (__pos2 > __str_sz)
2485 this->__throw_out_of_range();
2486 return insert(__pos1, __str.data() + __pos2, _VSTD::min(__n, __str_sz - __pos2));
2489 template <class _CharT, class _Traits, class _Allocator>
2490 template <class _Tp>
2493 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value,
2494 basic_string<_CharT, _Traits, _Allocator>&
2496 basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos1, const _Tp& __t,
2497 size_type __pos2, size_type __n)
2499 __self_view __sv = __t;
2500 size_type __str_sz = __sv.size();
2501 if (__pos2 > __str_sz)
2502 this->__throw_out_of_range();
2503 return insert(__pos1, __sv.data() + __pos2, _VSTD::min(__n, __str_sz - __pos2));
2506 template <class _CharT, class _Traits, class _Allocator>
2507 basic_string<_CharT, _Traits, _Allocator>&
2508 basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos, const value_type* __s)
2510 _LIBCPP_ASSERT(__s != nullptr, "string::insert received nullptr");
2511 return insert(__pos, __s, traits_type::length(__s));
2514 template <class _CharT, class _Traits, class _Allocator>
2515 typename basic_string<_CharT, _Traits, _Allocator>::iterator
2516 basic_string<_CharT, _Traits, _Allocator>::insert(const_iterator __pos, value_type __c)
2518 size_type __ip = static_cast<size_type>(__pos - begin());
2519 size_type __sz = size();
2520 size_type __cap = capacity();
2524 __grow_by(__cap, 1, __sz, __ip, 0, 1);
2525 __p = _VSTD::__to_raw_pointer(__get_long_pointer());
2529 __p = _VSTD::__to_raw_pointer(__get_pointer());
2530 size_type __n_move = __sz - __ip;
2532 traits_type::move(__p + __ip + 1, __p + __ip, __n_move);
2534 traits_type::assign(__p[__ip], __c);
2535 traits_type::assign(__p[++__sz], value_type());
2537 return begin() + static_cast<difference_type>(__ip);
2540 template <class _CharT, class _Traits, class _Allocator>
2541 inline _LIBCPP_INLINE_VISIBILITY
2542 typename basic_string<_CharT, _Traits, _Allocator>::iterator
2543 basic_string<_CharT, _Traits, _Allocator>::insert(const_iterator __pos, size_type __n, value_type __c)
2545 #if _LIBCPP_DEBUG_LEVEL >= 2
2546 _LIBCPP_ASSERT(__get_const_db()->__find_c_from_i(&__pos) == this,
2547 "string::insert(iterator, n, value) called with an iterator not"
2548 " referring to this string");
2550 difference_type __p = __pos - begin();
2551 insert(static_cast<size_type>(__p), __n, __c);
2552 return begin() + __p;
2557 template <class _CharT, class _Traits, class _Allocator>
2558 basic_string<_CharT, _Traits, _Allocator>&
2559 basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos, size_type __n1, const value_type* __s, size_type __n2)
2560 _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK
2562 _LIBCPP_ASSERT(__n2 == 0 || __s != nullptr, "string::replace received nullptr");
2563 size_type __sz = size();
2565 this->__throw_out_of_range();
2566 __n1 = _VSTD::min(__n1, __sz - __pos);
2567 size_type __cap = capacity();
2568 if (__cap - __sz + __n1 >= __n2)
2570 value_type* __p = _VSTD::__to_raw_pointer(__get_pointer());
2573 size_type __n_move = __sz - __pos - __n1;
2578 traits_type::move(__p + __pos, __s, __n2);
2579 traits_type::move(__p + __pos + __n2, __p + __pos + __n1, __n_move);
2582 if (__p + __pos < __s && __s < __p + __sz)
2584 if (__p + __pos + __n1 <= __s)
2586 else // __p + __pos < __s < __p + __pos + __n1
2588 traits_type::move(__p + __pos, __s, __n1);
2595 traits_type::move(__p + __pos + __n2, __p + __pos + __n1, __n_move);
2598 traits_type::move(__p + __pos, __s, __n2);
2600 // __sz += __n2 - __n1; in this and the below function below can cause unsigned integer overflow,
2601 // but this is a safe operation, so we disable the check.
2602 __sz += __n2 - __n1;
2604 __invalidate_iterators_past(__sz);
2605 traits_type::assign(__p[__sz], value_type());
2608 __grow_by_and_replace(__cap, __sz - __n1 + __n2 - __cap, __sz, __pos, __n1, __n2, __s);
2612 template <class _CharT, class _Traits, class _Allocator>
2613 basic_string<_CharT, _Traits, _Allocator>&
2614 basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos, size_type __n1, size_type __n2, value_type __c)
2615 _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK
2617 size_type __sz = size();
2619 this->__throw_out_of_range();
2620 __n1 = _VSTD::min(__n1, __sz - __pos);
2621 size_type __cap = capacity();
2623 if (__cap - __sz + __n1 >= __n2)
2625 __p = _VSTD::__to_raw_pointer(__get_pointer());
2628 size_type __n_move = __sz - __pos - __n1;
2630 traits_type::move(__p + __pos + __n2, __p + __pos + __n1, __n_move);
2635 __grow_by(__cap, __sz - __n1 + __n2 - __cap, __sz, __pos, __n1, __n2);
2636 __p = _VSTD::__to_raw_pointer(__get_long_pointer());
2638 traits_type::assign(__p + __pos, __n2, __c);
2639 __sz += __n2 - __n1;
2641 __invalidate_iterators_past(__sz);
2642 traits_type::assign(__p[__sz], value_type());
2646 template <class _CharT, class _Traits, class _Allocator>
2647 template<class _InputIterator>
2650 __is_input_iterator<_InputIterator>::value,
2651 basic_string<_CharT, _Traits, _Allocator>&
2653 basic_string<_CharT, _Traits, _Allocator>::replace(const_iterator __i1, const_iterator __i2,
2654 _InputIterator __j1, _InputIterator __j2)
2656 const basic_string __temp(__j1, __j2, __alloc());
2657 return this->replace(__i1, __i2, __temp);
2660 template <class _CharT, class _Traits, class _Allocator>
2661 inline _LIBCPP_INLINE_VISIBILITY
2662 basic_string<_CharT, _Traits, _Allocator>&
2663 basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos1, size_type __n1, const basic_string& __str)
2665 return replace(__pos1, __n1, __str.data(), __str.size());
2668 template <class _CharT, class _Traits, class _Allocator>
2669 basic_string<_CharT, _Traits, _Allocator>&
2670 basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos1, size_type __n1, const basic_string& __str,
2671 size_type __pos2, size_type __n2)
2673 size_type __str_sz = __str.size();
2674 if (__pos2 > __str_sz)
2675 this->__throw_out_of_range();
2676 return replace(__pos1, __n1, __str.data() + __pos2, _VSTD::min(__n2, __str_sz - __pos2));
2679 template <class _CharT, class _Traits, class _Allocator>
2680 template <class _Tp>
2683 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value,
2684 basic_string<_CharT, _Traits, _Allocator>&
2686 basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos1, size_type __n1, const _Tp& __t,
2687 size_type __pos2, size_type __n2)
2689 __self_view __sv = __t;
2690 size_type __str_sz = __sv.size();
2691 if (__pos2 > __str_sz)
2692 this->__throw_out_of_range();
2693 return replace(__pos1, __n1, __sv.data() + __pos2, _VSTD::min(__n2, __str_sz - __pos2));
2696 template <class _CharT, class _Traits, class _Allocator>
2697 basic_string<_CharT, _Traits, _Allocator>&
2698 basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos, size_type __n1, const value_type* __s)
2700 _LIBCPP_ASSERT(__s != nullptr, "string::replace received nullptr");
2701 return replace(__pos, __n1, __s, traits_type::length(__s));
2704 template <class _CharT, class _Traits, class _Allocator>
2705 inline _LIBCPP_INLINE_VISIBILITY
2706 basic_string<_CharT, _Traits, _Allocator>&
2707 basic_string<_CharT, _Traits, _Allocator>::replace(const_iterator __i1, const_iterator __i2, const basic_string& __str)
2709 return replace(static_cast<size_type>(__i1 - begin()), static_cast<size_type>(__i2 - __i1),
2710 __str.data(), __str.size());
2713 template <class _CharT, class _Traits, class _Allocator>
2714 inline _LIBCPP_INLINE_VISIBILITY
2715 basic_string<_CharT, _Traits, _Allocator>&
2716 basic_string<_CharT, _Traits, _Allocator>::replace(const_iterator __i1, const_iterator __i2, const value_type* __s, size_type __n)
2718 return replace(static_cast<size_type>(__i1 - begin()), static_cast<size_type>(__i2 - __i1), __s, __n);
2721 template <class _CharT, class _Traits, class _Allocator>
2722 inline _LIBCPP_INLINE_VISIBILITY
2723 basic_string<_CharT, _Traits, _Allocator>&
2724 basic_string<_CharT, _Traits, _Allocator>::replace(const_iterator __i1, const_iterator __i2, const value_type* __s)
2726 return replace(static_cast<size_type>(__i1 - begin()), static_cast<size_type>(__i2 - __i1), __s);
2729 template <class _CharT, class _Traits, class _Allocator>
2730 inline _LIBCPP_INLINE_VISIBILITY
2731 basic_string<_CharT, _Traits, _Allocator>&
2732 basic_string<_CharT, _Traits, _Allocator>::replace(const_iterator __i1, const_iterator __i2, size_type __n, value_type __c)
2734 return replace(static_cast<size_type>(__i1 - begin()), static_cast<size_type>(__i2 - __i1), __n, __c);
2739 template <class _CharT, class _Traits, class _Allocator>
2740 basic_string<_CharT, _Traits, _Allocator>&
2741 basic_string<_CharT, _Traits, _Allocator>::erase(size_type __pos, size_type __n)
2743 size_type __sz = size();
2745 this->__throw_out_of_range();
2748 value_type* __p = _VSTD::__to_raw_pointer(__get_pointer());
2749 __n = _VSTD::min(__n, __sz - __pos);
2750 size_type __n_move = __sz - __pos - __n;
2752 traits_type::move(__p + __pos, __p + __pos + __n, __n_move);
2755 __invalidate_iterators_past(__sz);
2756 traits_type::assign(__p[__sz], value_type());
2761 template <class _CharT, class _Traits, class _Allocator>
2762 inline _LIBCPP_INLINE_VISIBILITY
2763 typename basic_string<_CharT, _Traits, _Allocator>::iterator
2764 basic_string<_CharT, _Traits, _Allocator>::erase(const_iterator __pos)
2766 #if _LIBCPP_DEBUG_LEVEL >= 2
2767 _LIBCPP_ASSERT(__get_const_db()->__find_c_from_i(&__pos) == this,
2768 "string::erase(iterator) called with an iterator not"
2769 " referring to this string");
2771 _LIBCPP_ASSERT(__pos != end(),
2772 "string::erase(iterator) called with a non-dereferenceable iterator");
2773 iterator __b = begin();
2774 size_type __r = static_cast<size_type>(__pos - __b);
2776 return __b + static_cast<difference_type>(__r);
2779 template <class _CharT, class _Traits, class _Allocator>
2780 inline _LIBCPP_INLINE_VISIBILITY
2781 typename basic_string<_CharT, _Traits, _Allocator>::iterator
2782 basic_string<_CharT, _Traits, _Allocator>::erase(const_iterator __first, const_iterator __last)
2784 #if _LIBCPP_DEBUG_LEVEL >= 2
2785 _LIBCPP_ASSERT(__get_const_db()->__find_c_from_i(&__first) == this,
2786 "string::erase(iterator, iterator) called with an iterator not"
2787 " referring to this string");
2789 _LIBCPP_ASSERT(__first <= __last, "string::erase(first, last) called with invalid range");
2790 iterator __b = begin();
2791 size_type __r = static_cast<size_type>(__first - __b);
2792 erase(__r, static_cast<size_type>(__last - __first));
2793 return __b + static_cast<difference_type>(__r);
2796 template <class _CharT, class _Traits, class _Allocator>
2797 inline _LIBCPP_INLINE_VISIBILITY
2799 basic_string<_CharT, _Traits, _Allocator>::pop_back()
2801 _LIBCPP_ASSERT(!empty(), "string::pop_back(): string is already empty");
2805 __sz = __get_long_size() - 1;
2806 __set_long_size(__sz);
2807 traits_type::assign(*(__get_long_pointer() + __sz), value_type());
2811 __sz = __get_short_size() - 1;
2812 __set_short_size(__sz);
2813 traits_type::assign(*(__get_short_pointer() + __sz), value_type());
2815 __invalidate_iterators_past(__sz);
2818 template <class _CharT, class _Traits, class _Allocator>
2819 inline _LIBCPP_INLINE_VISIBILITY
2821 basic_string<_CharT, _Traits, _Allocator>::clear() _NOEXCEPT
2823 __invalidate_all_iterators();
2826 traits_type::assign(*__get_long_pointer(), value_type());
2831 traits_type::assign(*__get_short_pointer(), value_type());
2832 __set_short_size(0);
2836 template <class _CharT, class _Traits, class _Allocator>
2837 inline _LIBCPP_INLINE_VISIBILITY
2839 basic_string<_CharT, _Traits, _Allocator>::__erase_to_end(size_type __pos)
2843 traits_type::assign(*(__get_long_pointer() + __pos), value_type());
2844 __set_long_size(__pos);
2848 traits_type::assign(*(__get_short_pointer() + __pos), value_type());
2849 __set_short_size(__pos);
2851 __invalidate_iterators_past(__pos);
2854 template <class _CharT, class _Traits, class _Allocator>
2856 basic_string<_CharT, _Traits, _Allocator>::resize(size_type __n, value_type __c)
2858 size_type __sz = size();
2860 append(__n - __sz, __c);
2862 __erase_to_end(__n);
2865 template <class _CharT, class _Traits, class _Allocator>
2866 inline _LIBCPP_INLINE_VISIBILITY
2867 typename basic_string<_CharT, _Traits, _Allocator>::size_type
2868 basic_string<_CharT, _Traits, _Allocator>::max_size() const _NOEXCEPT
2870 size_type __m = __alloc_traits::max_size(__alloc());
2871 #if _LIBCPP_BIG_ENDIAN
2872 return (__m <= ~__long_mask ? __m : __m/2) - __alignment;
2874 return __m - __alignment;
2878 template <class _CharT, class _Traits, class _Allocator>
2880 basic_string<_CharT, _Traits, _Allocator>::reserve(size_type __res_arg)
2882 if (__res_arg > max_size())
2883 this->__throw_length_error();
2884 size_type __cap = capacity();
2885 size_type __sz = size();
2886 __res_arg = _VSTD::max(__res_arg, __sz);
2887 __res_arg = __recommend(__res_arg);
2888 if (__res_arg != __cap)
2890 pointer __new_data, __p;
2891 bool __was_long, __now_long;
2892 if (__res_arg == __min_cap - 1)
2896 __new_data = __get_short_pointer();
2897 __p = __get_long_pointer();
2901 if (__res_arg > __cap)
2902 __new_data = __alloc_traits::allocate(__alloc(), __res_arg+1);
2905 #ifndef _LIBCPP_NO_EXCEPTIONS
2908 #endif // _LIBCPP_NO_EXCEPTIONS
2909 __new_data = __alloc_traits::allocate(__alloc(), __res_arg+1);
2910 #ifndef _LIBCPP_NO_EXCEPTIONS
2916 #else // _LIBCPP_NO_EXCEPTIONS
2917 if (__new_data == nullptr)
2919 #endif // _LIBCPP_NO_EXCEPTIONS
2922 __was_long = __is_long();
2923 __p = __get_pointer();
2925 traits_type::copy(_VSTD::__to_raw_pointer(__new_data),
2926 _VSTD::__to_raw_pointer(__p), size()+1);
2928 __alloc_traits::deallocate(__alloc(), __p, __cap+1);
2931 __set_long_cap(__res_arg+1);
2932 __set_long_size(__sz);
2933 __set_long_pointer(__new_data);
2936 __set_short_size(__sz);
2937 __invalidate_all_iterators();
2941 template <class _CharT, class _Traits, class _Allocator>
2942 inline _LIBCPP_INLINE_VISIBILITY
2943 typename basic_string<_CharT, _Traits, _Allocator>::const_reference
2944 basic_string<_CharT, _Traits, _Allocator>::operator[](size_type __pos) const _NOEXCEPT
2946 _LIBCPP_ASSERT(__pos <= size(), "string index out of bounds");
2947 return *(data() + __pos);
2950 template <class _CharT, class _Traits, class _Allocator>
2951 inline _LIBCPP_INLINE_VISIBILITY
2952 typename basic_string<_CharT, _Traits, _Allocator>::reference
2953 basic_string<_CharT, _Traits, _Allocator>::operator[](size_type __pos) _NOEXCEPT
2955 _LIBCPP_ASSERT(__pos <= size(), "string index out of bounds");
2956 return *(__get_pointer() + __pos);
2959 template <class _CharT, class _Traits, class _Allocator>
2960 typename basic_string<_CharT, _Traits, _Allocator>::const_reference
2961 basic_string<_CharT, _Traits, _Allocator>::at(size_type __n) const
2964 this->__throw_out_of_range();
2965 return (*this)[__n];
2968 template <class _CharT, class _Traits, class _Allocator>
2969 typename basic_string<_CharT, _Traits, _Allocator>::reference
2970 basic_string<_CharT, _Traits, _Allocator>::at(size_type __n)
2973 this->__throw_out_of_range();
2974 return (*this)[__n];
2977 template <class _CharT, class _Traits, class _Allocator>
2978 inline _LIBCPP_INLINE_VISIBILITY
2979 typename basic_string<_CharT, _Traits, _Allocator>::reference
2980 basic_string<_CharT, _Traits, _Allocator>::front()
2982 _LIBCPP_ASSERT(!empty(), "string::front(): string is empty");
2983 return *__get_pointer();
2986 template <class _CharT, class _Traits, class _Allocator>
2987 inline _LIBCPP_INLINE_VISIBILITY
2988 typename basic_string<_CharT, _Traits, _Allocator>::const_reference
2989 basic_string<_CharT, _Traits, _Allocator>::front() const
2991 _LIBCPP_ASSERT(!empty(), "string::front(): string is empty");
2995 template <class _CharT, class _Traits, class _Allocator>
2996 inline _LIBCPP_INLINE_VISIBILITY
2997 typename basic_string<_CharT, _Traits, _Allocator>::reference
2998 basic_string<_CharT, _Traits, _Allocator>::back()
3000 _LIBCPP_ASSERT(!empty(), "string::back(): string is empty");
3001 return *(__get_pointer() + size() - 1);
3004 template <class _CharT, class _Traits, class _Allocator>
3005 inline _LIBCPP_INLINE_VISIBILITY
3006 typename basic_string<_CharT, _Traits, _Allocator>::const_reference
3007 basic_string<_CharT, _Traits, _Allocator>::back() const
3009 _LIBCPP_ASSERT(!empty(), "string::back(): string is empty");
3010 return *(data() + size() - 1);
3013 template <class _CharT, class _Traits, class _Allocator>
3014 typename basic_string<_CharT, _Traits, _Allocator>::size_type
3015 basic_string<_CharT, _Traits, _Allocator>::copy(value_type* __s, size_type __n, size_type __pos) const
3017 size_type __sz = size();
3019 this->__throw_out_of_range();
3020 size_type __rlen = _VSTD::min(__n, __sz - __pos);
3021 traits_type::copy(__s, data() + __pos, __rlen);
3025 template <class _CharT, class _Traits, class _Allocator>
3026 inline _LIBCPP_INLINE_VISIBILITY
3027 basic_string<_CharT, _Traits, _Allocator>
3028 basic_string<_CharT, _Traits, _Allocator>::substr(size_type __pos, size_type __n) const
3030 return basic_string(*this, __pos, __n, __alloc());
3033 template <class _CharT, class _Traits, class _Allocator>
3034 inline _LIBCPP_INLINE_VISIBILITY
3036 basic_string<_CharT, _Traits, _Allocator>::swap(basic_string& __str)
3037 #if _LIBCPP_STD_VER >= 14
3040 _NOEXCEPT_DEBUG_(!__alloc_traits::propagate_on_container_swap::value ||
3041 __is_nothrow_swappable<allocator_type>::value)
3044 #if _LIBCPP_DEBUG_LEVEL >= 2
3046 __get_db()->__invalidate_all(this);
3047 if (!__str.__is_long())
3048 __get_db()->__invalidate_all(&__str);
3049 __get_db()->swap(this, &__str);
3052 __alloc_traits::propagate_on_container_swap::value ||
3053 __alloc_traits::is_always_equal::value ||
3054 __alloc() == __str.__alloc(), "swapping non-equal allocators");
3055 _VSTD::swap(__r_.first(), __str.__r_.first());
3056 __swap_allocator(__alloc(), __str.__alloc());
3061 template <class _Traits>
3062 struct _LIBCPP_HIDDEN __traits_eq
3064 typedef typename _Traits::char_type char_type;
3065 _LIBCPP_INLINE_VISIBILITY
3066 bool operator()(const char_type& __x, const char_type& __y) _NOEXCEPT
3067 {return _Traits::eq(__x, __y);}
3070 template<class _CharT, class _Traits, class _Allocator>
3071 typename basic_string<_CharT, _Traits, _Allocator>::size_type
3072 basic_string<_CharT, _Traits, _Allocator>::find(const value_type* __s,
3074 size_type __n) const _NOEXCEPT
3076 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::find(): received nullptr");
3077 return __str_find<value_type, size_type, traits_type, npos>
3078 (data(), size(), __s, __pos, __n);
3081 template<class _CharT, class _Traits, class _Allocator>
3082 inline _LIBCPP_INLINE_VISIBILITY
3083 typename basic_string<_CharT, _Traits, _Allocator>::size_type
3084 basic_string<_CharT, _Traits, _Allocator>::find(const basic_string& __str,
3085 size_type __pos) const _NOEXCEPT
3087 return __str_find<value_type, size_type, traits_type, npos>
3088 (data(), size(), __str.data(), __pos, __str.size());
3091 template<class _CharT, class _Traits, class _Allocator>
3092 inline _LIBCPP_INLINE_VISIBILITY
3093 typename basic_string<_CharT, _Traits, _Allocator>::size_type
3094 basic_string<_CharT, _Traits, _Allocator>::find(__self_view __sv,
3095 size_type __pos) const _NOEXCEPT
3097 return __str_find<value_type, size_type, traits_type, npos>
3098 (data(), size(), __sv.data(), __pos, __sv.size());
3101 template<class _CharT, class _Traits, class _Allocator>
3102 inline _LIBCPP_INLINE_VISIBILITY
3103 typename basic_string<_CharT, _Traits, _Allocator>::size_type
3104 basic_string<_CharT, _Traits, _Allocator>::find(const value_type* __s,
3105 size_type __pos) const _NOEXCEPT
3107 _LIBCPP_ASSERT(__s != nullptr, "string::find(): received nullptr");
3108 return __str_find<value_type, size_type, traits_type, npos>
3109 (data(), size(), __s, __pos, traits_type::length(__s));
3112 template<class _CharT, class _Traits, class _Allocator>
3113 typename basic_string<_CharT, _Traits, _Allocator>::size_type
3114 basic_string<_CharT, _Traits, _Allocator>::find(value_type __c,
3115 size_type __pos) const _NOEXCEPT
3117 return __str_find<value_type, size_type, traits_type, npos>
3118 (data(), size(), __c, __pos);
3123 template<class _CharT, class _Traits, class _Allocator>
3124 typename basic_string<_CharT, _Traits, _Allocator>::size_type
3125 basic_string<_CharT, _Traits, _Allocator>::rfind(const value_type* __s,
3127 size_type __n) const _NOEXCEPT
3129 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::rfind(): received nullptr");
3130 return __str_rfind<value_type, size_type, traits_type, npos>
3131 (data(), size(), __s, __pos, __n);
3134 template<class _CharT, class _Traits, class _Allocator>
3135 inline _LIBCPP_INLINE_VISIBILITY
3136 typename basic_string<_CharT, _Traits, _Allocator>::size_type
3137 basic_string<_CharT, _Traits, _Allocator>::rfind(const basic_string& __str,
3138 size_type __pos) const _NOEXCEPT
3140 return __str_rfind<value_type, size_type, traits_type, npos>
3141 (data(), size(), __str.data(), __pos, __str.size());
3144 template<class _CharT, class _Traits, class _Allocator>
3145 inline _LIBCPP_INLINE_VISIBILITY
3146 typename basic_string<_CharT, _Traits, _Allocator>::size_type
3147 basic_string<_CharT, _Traits, _Allocator>::rfind(__self_view __sv,
3148 size_type __pos) const _NOEXCEPT
3150 return __str_rfind<value_type, size_type, traits_type, npos>
3151 (data(), size(), __sv.data(), __pos, __sv.size());
3154 template<class _CharT, class _Traits, class _Allocator>
3155 inline _LIBCPP_INLINE_VISIBILITY
3156 typename basic_string<_CharT, _Traits, _Allocator>::size_type
3157 basic_string<_CharT, _Traits, _Allocator>::rfind(const value_type* __s,
3158 size_type __pos) const _NOEXCEPT
3160 _LIBCPP_ASSERT(__s != nullptr, "string::rfind(): received nullptr");
3161 return __str_rfind<value_type, size_type, traits_type, npos>
3162 (data(), size(), __s, __pos, traits_type::length(__s));
3165 template<class _CharT, class _Traits, class _Allocator>
3166 typename basic_string<_CharT, _Traits, _Allocator>::size_type
3167 basic_string<_CharT, _Traits, _Allocator>::rfind(value_type __c,
3168 size_type __pos) const _NOEXCEPT
3170 return __str_rfind<value_type, size_type, traits_type, npos>
3171 (data(), size(), __c, __pos);
3176 template<class _CharT, class _Traits, class _Allocator>
3177 typename basic_string<_CharT, _Traits, _Allocator>::size_type
3178 basic_string<_CharT, _Traits, _Allocator>::find_first_of(const value_type* __s,
3180 size_type __n) const _NOEXCEPT
3182 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::find_first_of(): received nullptr");
3183 return __str_find_first_of<value_type, size_type, traits_type, npos>
3184 (data(), size(), __s, __pos, __n);
3187 template<class _CharT, class _Traits, class _Allocator>
3188 inline _LIBCPP_INLINE_VISIBILITY
3189 typename basic_string<_CharT, _Traits, _Allocator>::size_type
3190 basic_string<_CharT, _Traits, _Allocator>::find_first_of(const basic_string& __str,
3191 size_type __pos) const _NOEXCEPT
3193 return __str_find_first_of<value_type, size_type, traits_type, npos>
3194 (data(), size(), __str.data(), __pos, __str.size());
3197 template<class _CharT, class _Traits, class _Allocator>
3198 inline _LIBCPP_INLINE_VISIBILITY
3199 typename basic_string<_CharT, _Traits, _Allocator>::size_type
3200 basic_string<_CharT, _Traits, _Allocator>::find_first_of(__self_view __sv,
3201 size_type __pos) const _NOEXCEPT
3203 return __str_find_first_of<value_type, size_type, traits_type, npos>
3204 (data(), size(), __sv.data(), __pos, __sv.size());
3207 template<class _CharT, class _Traits, class _Allocator>
3208 inline _LIBCPP_INLINE_VISIBILITY
3209 typename basic_string<_CharT, _Traits, _Allocator>::size_type
3210 basic_string<_CharT, _Traits, _Allocator>::find_first_of(const value_type* __s,
3211 size_type __pos) const _NOEXCEPT
3213 _LIBCPP_ASSERT(__s != nullptr, "string::find_first_of(): received nullptr");
3214 return __str_find_first_of<value_type, size_type, traits_type, npos>
3215 (data(), size(), __s, __pos, traits_type::length(__s));
3218 template<class _CharT, class _Traits, class _Allocator>
3219 inline _LIBCPP_INLINE_VISIBILITY
3220 typename basic_string<_CharT, _Traits, _Allocator>::size_type
3221 basic_string<_CharT, _Traits, _Allocator>::find_first_of(value_type __c,
3222 size_type __pos) const _NOEXCEPT
3224 return find(__c, __pos);
3229 template<class _CharT, class _Traits, class _Allocator>
3230 typename basic_string<_CharT, _Traits, _Allocator>::size_type
3231 basic_string<_CharT, _Traits, _Allocator>::find_last_of(const value_type* __s,
3233 size_type __n) const _NOEXCEPT
3235 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::find_last_of(): received nullptr");
3236 return __str_find_last_of<value_type, size_type, traits_type, npos>
3237 (data(), size(), __s, __pos, __n);
3240 template<class _CharT, class _Traits, class _Allocator>
3241 inline _LIBCPP_INLINE_VISIBILITY
3242 typename basic_string<_CharT, _Traits, _Allocator>::size_type
3243 basic_string<_CharT, _Traits, _Allocator>::find_last_of(const basic_string& __str,
3244 size_type __pos) const _NOEXCEPT
3246 return __str_find_last_of<value_type, size_type, traits_type, npos>
3247 (data(), size(), __str.data(), __pos, __str.size());
3250 template<class _CharT, class _Traits, class _Allocator>
3251 inline _LIBCPP_INLINE_VISIBILITY
3252 typename basic_string<_CharT, _Traits, _Allocator>::size_type
3253 basic_string<_CharT, _Traits, _Allocator>::find_last_of(__self_view __sv,
3254 size_type __pos) const _NOEXCEPT
3256 return __str_find_last_of<value_type, size_type, traits_type, npos>
3257 (data(), size(), __sv.data(), __pos, __sv.size());
3260 template<class _CharT, class _Traits, class _Allocator>
3261 inline _LIBCPP_INLINE_VISIBILITY
3262 typename basic_string<_CharT, _Traits, _Allocator>::size_type
3263 basic_string<_CharT, _Traits, _Allocator>::find_last_of(const value_type* __s,
3264 size_type __pos) const _NOEXCEPT
3266 _LIBCPP_ASSERT(__s != nullptr, "string::find_last_of(): received nullptr");
3267 return __str_find_last_of<value_type, size_type, traits_type, npos>
3268 (data(), size(), __s, __pos, traits_type::length(__s));
3271 template<class _CharT, class _Traits, class _Allocator>
3272 inline _LIBCPP_INLINE_VISIBILITY
3273 typename basic_string<_CharT, _Traits, _Allocator>::size_type
3274 basic_string<_CharT, _Traits, _Allocator>::find_last_of(value_type __c,
3275 size_type __pos) const _NOEXCEPT
3277 return rfind(__c, __pos);
3280 // find_first_not_of
3282 template<class _CharT, class _Traits, class _Allocator>
3283 typename basic_string<_CharT, _Traits, _Allocator>::size_type
3284 basic_string<_CharT, _Traits, _Allocator>::find_first_not_of(const value_type* __s,
3286 size_type __n) const _NOEXCEPT
3288 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::find_first_not_of(): received nullptr");
3289 return __str_find_first_not_of<value_type, size_type, traits_type, npos>
3290 (data(), size(), __s, __pos, __n);
3293 template<class _CharT, class _Traits, class _Allocator>
3294 inline _LIBCPP_INLINE_VISIBILITY
3295 typename basic_string<_CharT, _Traits, _Allocator>::size_type
3296 basic_string<_CharT, _Traits, _Allocator>::find_first_not_of(const basic_string& __str,
3297 size_type __pos) const _NOEXCEPT
3299 return __str_find_first_not_of<value_type, size_type, traits_type, npos>
3300 (data(), size(), __str.data(), __pos, __str.size());
3303 template<class _CharT, class _Traits, class _Allocator>
3304 inline _LIBCPP_INLINE_VISIBILITY
3305 typename basic_string<_CharT, _Traits, _Allocator>::size_type
3306 basic_string<_CharT, _Traits, _Allocator>::find_first_not_of(__self_view __sv,
3307 size_type __pos) const _NOEXCEPT
3309 return __str_find_first_not_of<value_type, size_type, traits_type, npos>
3310 (data(), size(), __sv.data(), __pos, __sv.size());
3313 template<class _CharT, class _Traits, class _Allocator>
3314 inline _LIBCPP_INLINE_VISIBILITY
3315 typename basic_string<_CharT, _Traits, _Allocator>::size_type
3316 basic_string<_CharT, _Traits, _Allocator>::find_first_not_of(const value_type* __s,
3317 size_type __pos) const _NOEXCEPT
3319 _LIBCPP_ASSERT(__s != nullptr, "string::find_first_not_of(): received nullptr");
3320 return __str_find_first_not_of<value_type, size_type, traits_type, npos>
3321 (data(), size(), __s, __pos, traits_type::length(__s));
3324 template<class _CharT, class _Traits, class _Allocator>
3325 inline _LIBCPP_INLINE_VISIBILITY
3326 typename basic_string<_CharT, _Traits, _Allocator>::size_type
3327 basic_string<_CharT, _Traits, _Allocator>::find_first_not_of(value_type __c,
3328 size_type __pos) const _NOEXCEPT
3330 return __str_find_first_not_of<value_type, size_type, traits_type, npos>
3331 (data(), size(), __c, __pos);
3336 template<class _CharT, class _Traits, class _Allocator>
3337 typename basic_string<_CharT, _Traits, _Allocator>::size_type
3338 basic_string<_CharT, _Traits, _Allocator>::find_last_not_of(const value_type* __s,
3340 size_type __n) const _NOEXCEPT
3342 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::find_last_not_of(): received nullptr");
3343 return __str_find_last_not_of<value_type, size_type, traits_type, npos>
3344 (data(), size(), __s, __pos, __n);
3347 template<class _CharT, class _Traits, class _Allocator>
3348 inline _LIBCPP_INLINE_VISIBILITY
3349 typename basic_string<_CharT, _Traits, _Allocator>::size_type
3350 basic_string<_CharT, _Traits, _Allocator>::find_last_not_of(const basic_string& __str,
3351 size_type __pos) const _NOEXCEPT
3353 return __str_find_last_not_of<value_type, size_type, traits_type, npos>
3354 (data(), size(), __str.data(), __pos, __str.size());
3357 template<class _CharT, class _Traits, class _Allocator>
3358 inline _LIBCPP_INLINE_VISIBILITY
3359 typename basic_string<_CharT, _Traits, _Allocator>::size_type
3360 basic_string<_CharT, _Traits, _Allocator>::find_last_not_of(__self_view __sv,
3361 size_type __pos) const _NOEXCEPT
3363 return __str_find_last_not_of<value_type, size_type, traits_type, npos>
3364 (data(), size(), __sv.data(), __pos, __sv.size());
3367 template<class _CharT, class _Traits, class _Allocator>
3368 inline _LIBCPP_INLINE_VISIBILITY
3369 typename basic_string<_CharT, _Traits, _Allocator>::size_type
3370 basic_string<_CharT, _Traits, _Allocator>::find_last_not_of(const value_type* __s,
3371 size_type __pos) const _NOEXCEPT
3373 _LIBCPP_ASSERT(__s != nullptr, "string::find_last_not_of(): received nullptr");
3374 return __str_find_last_not_of<value_type, size_type, traits_type, npos>
3375 (data(), size(), __s, __pos, traits_type::length(__s));
3378 template<class _CharT, class _Traits, class _Allocator>
3379 inline _LIBCPP_INLINE_VISIBILITY
3380 typename basic_string<_CharT, _Traits, _Allocator>::size_type
3381 basic_string<_CharT, _Traits, _Allocator>::find_last_not_of(value_type __c,
3382 size_type __pos) const _NOEXCEPT
3384 return __str_find_last_not_of<value_type, size_type, traits_type, npos>
3385 (data(), size(), __c, __pos);
3390 template <class _CharT, class _Traits, class _Allocator>
3391 inline _LIBCPP_INLINE_VISIBILITY
3393 basic_string<_CharT, _Traits, _Allocator>::compare(__self_view __sv) const _NOEXCEPT
3395 size_t __lhs_sz = size();
3396 size_t __rhs_sz = __sv.size();
3397 int __result = traits_type::compare(data(), __sv.data(),
3398 _VSTD::min(__lhs_sz, __rhs_sz));
3401 if (__lhs_sz < __rhs_sz)
3403 if (__lhs_sz > __rhs_sz)
3408 template <class _CharT, class _Traits, class _Allocator>
3409 inline _LIBCPP_INLINE_VISIBILITY
3411 basic_string<_CharT, _Traits, _Allocator>::compare(const basic_string& __str) const _NOEXCEPT
3413 return compare(__self_view(__str));
3416 template <class _CharT, class _Traits, class _Allocator>
3418 basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1,
3420 const value_type* __s,
3421 size_type __n2) const
3423 _LIBCPP_ASSERT(__n2 == 0 || __s != nullptr, "string::compare(): received nullptr");
3424 size_type __sz = size();
3425 if (__pos1 > __sz || __n2 == npos)
3426 this->__throw_out_of_range();
3427 size_type __rlen = _VSTD::min(__n1, __sz - __pos1);
3428 int __r = traits_type::compare(data() + __pos1, __s, _VSTD::min(__rlen, __n2));
3433 else if (__rlen > __n2)
3439 template <class _CharT, class _Traits, class _Allocator>
3440 inline _LIBCPP_INLINE_VISIBILITY
3442 basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1,
3444 __self_view __sv) const
3446 return compare(__pos1, __n1, __sv.data(), __sv.size());
3449 template <class _CharT, class _Traits, class _Allocator>
3450 inline _LIBCPP_INLINE_VISIBILITY
3452 basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1,
3454 const basic_string& __str) const
3456 return compare(__pos1, __n1, __str.data(), __str.size());
3459 template <class _CharT, class _Traits, class _Allocator>
3460 template <class _Tp>
3463 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value,
3466 basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1,
3470 size_type __n2) const
3472 __self_view __sv = __t;
3473 return __self_view(*this).substr(__pos1, __n1).compare(__sv.substr(__pos2, __n2));
3476 template <class _CharT, class _Traits, class _Allocator>
3478 basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1,
3480 const basic_string& __str,
3482 size_type __n2) const
3484 return compare(__pos1, __n1, __self_view(__str), __pos2, __n2);
3487 template <class _CharT, class _Traits, class _Allocator>
3489 basic_string<_CharT, _Traits, _Allocator>::compare(const value_type* __s) const _NOEXCEPT
3491 _LIBCPP_ASSERT(__s != nullptr, "string::compare(): received nullptr");
3492 return compare(0, npos, __s, traits_type::length(__s));
3495 template <class _CharT, class _Traits, class _Allocator>
3497 basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1,
3499 const value_type* __s) const
3501 _LIBCPP_ASSERT(__s != nullptr, "string::compare(): received nullptr");
3502 return compare(__pos1, __n1, __s, traits_type::length(__s));
3507 template<class _CharT, class _Traits, class _Allocator>
3508 inline _LIBCPP_INLINE_VISIBILITY
3510 basic_string<_CharT, _Traits, _Allocator>::__invariants() const
3512 if (size() > capacity())
3514 if (capacity() < __min_cap - 1)
3518 if (data()[size()] != value_type(0))
3525 template<class _CharT, class _Traits, class _Allocator>
3526 inline _LIBCPP_INLINE_VISIBILITY
3528 operator==(const basic_string<_CharT, _Traits, _Allocator>& __lhs,
3529 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT
3531 size_t __lhs_sz = __lhs.size();
3532 return __lhs_sz == __rhs.size() && _Traits::compare(__lhs.data(),
3537 template<class _Allocator>
3538 inline _LIBCPP_INLINE_VISIBILITY
3540 operator==(const basic_string<char, char_traits<char>, _Allocator>& __lhs,
3541 const basic_string<char, char_traits<char>, _Allocator>& __rhs) _NOEXCEPT
3543 size_t __lhs_sz = __lhs.size();
3544 if (__lhs_sz != __rhs.size())
3546 const char* __lp = __lhs.data();
3547 const char* __rp = __rhs.data();
3548 if (__lhs.__is_long())
3549 return char_traits<char>::compare(__lp, __rp, __lhs_sz) == 0;
3550 for (; __lhs_sz != 0; --__lhs_sz, ++__lp, ++__rp)
3556 template<class _CharT, class _Traits, class _Allocator>
3557 inline _LIBCPP_INLINE_VISIBILITY
3559 operator==(const _CharT* __lhs,
3560 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT
3562 typedef basic_string<_CharT, _Traits, _Allocator> _String;
3563 _LIBCPP_ASSERT(__lhs != nullptr, "operator==(char*, basic_string): received nullptr");
3564 size_t __lhs_len = _Traits::length(__lhs);
3565 if (__lhs_len != __rhs.size()) return false;
3566 return __rhs.compare(0, _String::npos, __lhs, __lhs_len) == 0;
3569 template<class _CharT, class _Traits, class _Allocator>
3570 inline _LIBCPP_INLINE_VISIBILITY
3572 operator==(const basic_string<_CharT,_Traits,_Allocator>& __lhs,
3573 const _CharT* __rhs) _NOEXCEPT
3575 typedef basic_string<_CharT, _Traits, _Allocator> _String;
3576 _LIBCPP_ASSERT(__rhs != nullptr, "operator==(basic_string, char*): received nullptr");
3577 size_t __rhs_len = _Traits::length(__rhs);
3578 if (__rhs_len != __lhs.size()) return false;
3579 return __lhs.compare(0, _String::npos, __rhs, __rhs_len) == 0;
3582 template<class _CharT, class _Traits, class _Allocator>
3583 inline _LIBCPP_INLINE_VISIBILITY
3585 operator!=(const basic_string<_CharT,_Traits,_Allocator>& __lhs,
3586 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT
3588 return !(__lhs == __rhs);
3591 template<class _CharT, class _Traits, class _Allocator>
3592 inline _LIBCPP_INLINE_VISIBILITY
3594 operator!=(const _CharT* __lhs,
3595 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT
3597 return !(__lhs == __rhs);
3600 template<class _CharT, class _Traits, class _Allocator>
3601 inline _LIBCPP_INLINE_VISIBILITY
3603 operator!=(const basic_string<_CharT, _Traits, _Allocator>& __lhs,
3604 const _CharT* __rhs) _NOEXCEPT
3606 return !(__lhs == __rhs);
3611 template<class _CharT, class _Traits, class _Allocator>
3612 inline _LIBCPP_INLINE_VISIBILITY
3614 operator< (const basic_string<_CharT, _Traits, _Allocator>& __lhs,
3615 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT
3617 return __lhs.compare(__rhs) < 0;
3620 template<class _CharT, class _Traits, class _Allocator>
3621 inline _LIBCPP_INLINE_VISIBILITY
3623 operator< (const basic_string<_CharT, _Traits, _Allocator>& __lhs,
3624 const _CharT* __rhs) _NOEXCEPT
3626 return __lhs.compare(__rhs) < 0;
3629 template<class _CharT, class _Traits, class _Allocator>
3630 inline _LIBCPP_INLINE_VISIBILITY
3632 operator< (const _CharT* __lhs,
3633 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT
3635 return __rhs.compare(__lhs) > 0;
3640 template<class _CharT, class _Traits, class _Allocator>
3641 inline _LIBCPP_INLINE_VISIBILITY
3643 operator> (const basic_string<_CharT, _Traits, _Allocator>& __lhs,
3644 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT
3646 return __rhs < __lhs;
3649 template<class _CharT, class _Traits, class _Allocator>
3650 inline _LIBCPP_INLINE_VISIBILITY
3652 operator> (const basic_string<_CharT, _Traits, _Allocator>& __lhs,
3653 const _CharT* __rhs) _NOEXCEPT
3655 return __rhs < __lhs;
3658 template<class _CharT, class _Traits, class _Allocator>
3659 inline _LIBCPP_INLINE_VISIBILITY
3661 operator> (const _CharT* __lhs,
3662 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT
3664 return __rhs < __lhs;
3669 template<class _CharT, class _Traits, class _Allocator>
3670 inline _LIBCPP_INLINE_VISIBILITY
3672 operator<=(const basic_string<_CharT, _Traits, _Allocator>& __lhs,
3673 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT
3675 return !(__rhs < __lhs);
3678 template<class _CharT, class _Traits, class _Allocator>
3679 inline _LIBCPP_INLINE_VISIBILITY
3681 operator<=(const basic_string<_CharT, _Traits, _Allocator>& __lhs,
3682 const _CharT* __rhs) _NOEXCEPT
3684 return !(__rhs < __lhs);
3687 template<class _CharT, class _Traits, class _Allocator>
3688 inline _LIBCPP_INLINE_VISIBILITY
3690 operator<=(const _CharT* __lhs,
3691 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT
3693 return !(__rhs < __lhs);
3698 template<class _CharT, class _Traits, class _Allocator>
3699 inline _LIBCPP_INLINE_VISIBILITY
3701 operator>=(const basic_string<_CharT, _Traits, _Allocator>& __lhs,
3702 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT
3704 return !(__lhs < __rhs);
3707 template<class _CharT, class _Traits, class _Allocator>
3708 inline _LIBCPP_INLINE_VISIBILITY
3710 operator>=(const basic_string<_CharT, _Traits, _Allocator>& __lhs,
3711 const _CharT* __rhs) _NOEXCEPT
3713 return !(__lhs < __rhs);
3716 template<class _CharT, class _Traits, class _Allocator>
3717 inline _LIBCPP_INLINE_VISIBILITY
3719 operator>=(const _CharT* __lhs,
3720 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT
3722 return !(__lhs < __rhs);
3727 template<class _CharT, class _Traits, class _Allocator>
3728 basic_string<_CharT, _Traits, _Allocator>
3729 operator+(const basic_string<_CharT, _Traits, _Allocator>& __lhs,
3730 const basic_string<_CharT, _Traits, _Allocator>& __rhs)
3732 basic_string<_CharT, _Traits, _Allocator> __r(__lhs.get_allocator());
3733 typename basic_string<_CharT, _Traits, _Allocator>::size_type __lhs_sz = __lhs.size();
3734 typename basic_string<_CharT, _Traits, _Allocator>::size_type __rhs_sz = __rhs.size();
3735 __r.__init(__lhs.data(), __lhs_sz, __lhs_sz + __rhs_sz);
3736 __r.append(__rhs.data(), __rhs_sz);
3740 template<class _CharT, class _Traits, class _Allocator>
3741 basic_string<_CharT, _Traits, _Allocator>
3742 operator+(const _CharT* __lhs , const basic_string<_CharT,_Traits,_Allocator>& __rhs)
3744 basic_string<_CharT, _Traits, _Allocator> __r(__rhs.get_allocator());
3745 typename basic_string<_CharT, _Traits, _Allocator>::size_type __lhs_sz = _Traits::length(__lhs);
3746 typename basic_string<_CharT, _Traits, _Allocator>::size_type __rhs_sz = __rhs.size();
3747 __r.__init(__lhs, __lhs_sz, __lhs_sz + __rhs_sz);
3748 __r.append(__rhs.data(), __rhs_sz);
3752 template<class _CharT, class _Traits, class _Allocator>
3753 basic_string<_CharT, _Traits, _Allocator>
3754 operator+(_CharT __lhs, const basic_string<_CharT,_Traits,_Allocator>& __rhs)
3756 basic_string<_CharT, _Traits, _Allocator> __r(__rhs.get_allocator());
3757 typename basic_string<_CharT, _Traits, _Allocator>::size_type __rhs_sz = __rhs.size();
3758 __r.__init(&__lhs, 1, 1 + __rhs_sz);
3759 __r.append(__rhs.data(), __rhs_sz);
3763 template<class _CharT, class _Traits, class _Allocator>
3764 basic_string<_CharT, _Traits, _Allocator>
3765 operator+(const basic_string<_CharT, _Traits, _Allocator>& __lhs, const _CharT* __rhs)
3767 basic_string<_CharT, _Traits, _Allocator> __r(__lhs.get_allocator());
3768 typename basic_string<_CharT, _Traits, _Allocator>::size_type __lhs_sz = __lhs.size();
3769 typename basic_string<_CharT, _Traits, _Allocator>::size_type __rhs_sz = _Traits::length(__rhs);
3770 __r.__init(__lhs.data(), __lhs_sz, __lhs_sz + __rhs_sz);
3771 __r.append(__rhs, __rhs_sz);
3775 template<class _CharT, class _Traits, class _Allocator>
3776 basic_string<_CharT, _Traits, _Allocator>
3777 operator+(const basic_string<_CharT, _Traits, _Allocator>& __lhs, _CharT __rhs)
3779 basic_string<_CharT, _Traits, _Allocator> __r(__lhs.get_allocator());
3780 typename basic_string<_CharT, _Traits, _Allocator>::size_type __lhs_sz = __lhs.size();
3781 __r.__init(__lhs.data(), __lhs_sz, __lhs_sz + 1);
3782 __r.push_back(__rhs);
3786 #ifndef _LIBCPP_CXX03_LANG
3788 template<class _CharT, class _Traits, class _Allocator>
3789 inline _LIBCPP_INLINE_VISIBILITY
3790 basic_string<_CharT, _Traits, _Allocator>
3791 operator+(basic_string<_CharT, _Traits, _Allocator>&& __lhs, const basic_string<_CharT, _Traits, _Allocator>& __rhs)
3793 return _VSTD::move(__lhs.append(__rhs));
3796 template<class _CharT, class _Traits, class _Allocator>
3797 inline _LIBCPP_INLINE_VISIBILITY
3798 basic_string<_CharT, _Traits, _Allocator>
3799 operator+(const basic_string<_CharT, _Traits, _Allocator>& __lhs, basic_string<_CharT, _Traits, _Allocator>&& __rhs)
3801 return _VSTD::move(__rhs.insert(0, __lhs));
3804 template<class _CharT, class _Traits, class _Allocator>
3805 inline _LIBCPP_INLINE_VISIBILITY
3806 basic_string<_CharT, _Traits, _Allocator>
3807 operator+(basic_string<_CharT, _Traits, _Allocator>&& __lhs, basic_string<_CharT, _Traits, _Allocator>&& __rhs)
3809 return _VSTD::move(__lhs.append(__rhs));
3812 template<class _CharT, class _Traits, class _Allocator>
3813 inline _LIBCPP_INLINE_VISIBILITY
3814 basic_string<_CharT, _Traits, _Allocator>
3815 operator+(const _CharT* __lhs , basic_string<_CharT,_Traits,_Allocator>&& __rhs)
3817 return _VSTD::move(__rhs.insert(0, __lhs));
3820 template<class _CharT, class _Traits, class _Allocator>
3821 inline _LIBCPP_INLINE_VISIBILITY
3822 basic_string<_CharT, _Traits, _Allocator>
3823 operator+(_CharT __lhs, basic_string<_CharT,_Traits,_Allocator>&& __rhs)
3825 __rhs.insert(__rhs.begin(), __lhs);
3826 return _VSTD::move(__rhs);
3829 template<class _CharT, class _Traits, class _Allocator>
3830 inline _LIBCPP_INLINE_VISIBILITY
3831 basic_string<_CharT, _Traits, _Allocator>
3832 operator+(basic_string<_CharT, _Traits, _Allocator>&& __lhs, const _CharT* __rhs)
3834 return _VSTD::move(__lhs.append(__rhs));
3837 template<class _CharT, class _Traits, class _Allocator>
3838 inline _LIBCPP_INLINE_VISIBILITY
3839 basic_string<_CharT, _Traits, _Allocator>
3840 operator+(basic_string<_CharT, _Traits, _Allocator>&& __lhs, _CharT __rhs)
3842 __lhs.push_back(__rhs);
3843 return _VSTD::move(__lhs);
3846 #endif // _LIBCPP_CXX03_LANG
3850 template<class _CharT, class _Traits, class _Allocator>
3851 inline _LIBCPP_INLINE_VISIBILITY
3853 swap(basic_string<_CharT, _Traits, _Allocator>& __lhs,
3854 basic_string<_CharT, _Traits, _Allocator>& __rhs)
3855 _NOEXCEPT_(_NOEXCEPT_(__lhs.swap(__rhs)))
3860 #ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
3862 typedef basic_string<char16_t> u16string;
3863 typedef basic_string<char32_t> u32string;
3865 #endif // _LIBCPP_HAS_NO_UNICODE_CHARS
3867 _LIBCPP_FUNC_VIS int stoi (const string& __str, size_t* __idx = 0, int __base = 10);
3868 _LIBCPP_FUNC_VIS long stol (const string& __str, size_t* __idx = 0, int __base = 10);
3869 _LIBCPP_FUNC_VIS unsigned long stoul (const string& __str, size_t* __idx = 0, int __base = 10);
3870 _LIBCPP_FUNC_VIS long long stoll (const string& __str, size_t* __idx = 0, int __base = 10);
3871 _LIBCPP_FUNC_VIS unsigned long long stoull(const string& __str, size_t* __idx = 0, int __base = 10);
3873 _LIBCPP_FUNC_VIS float stof (const string& __str, size_t* __idx = 0);
3874 _LIBCPP_FUNC_VIS double stod (const string& __str, size_t* __idx = 0);
3875 _LIBCPP_FUNC_VIS long double stold(const string& __str, size_t* __idx = 0);
3877 _LIBCPP_FUNC_VIS string to_string(int __val);
3878 _LIBCPP_FUNC_VIS string to_string(unsigned __val);
3879 _LIBCPP_FUNC_VIS string to_string(long __val);
3880 _LIBCPP_FUNC_VIS string to_string(unsigned long __val);
3881 _LIBCPP_FUNC_VIS string to_string(long long __val);
3882 _LIBCPP_FUNC_VIS string to_string(unsigned long long __val);
3883 _LIBCPP_FUNC_VIS string to_string(float __val);
3884 _LIBCPP_FUNC_VIS string to_string(double __val);
3885 _LIBCPP_FUNC_VIS string to_string(long double __val);
3887 _LIBCPP_FUNC_VIS int stoi (const wstring& __str, size_t* __idx = 0, int __base = 10);
3888 _LIBCPP_FUNC_VIS long stol (const wstring& __str, size_t* __idx = 0, int __base = 10);
3889 _LIBCPP_FUNC_VIS unsigned long stoul (const wstring& __str, size_t* __idx = 0, int __base = 10);
3890 _LIBCPP_FUNC_VIS long long stoll (const wstring& __str, size_t* __idx = 0, int __base = 10);
3891 _LIBCPP_FUNC_VIS unsigned long long stoull(const wstring& __str, size_t* __idx = 0, int __base = 10);
3893 _LIBCPP_FUNC_VIS float stof (const wstring& __str, size_t* __idx = 0);
3894 _LIBCPP_FUNC_VIS double stod (const wstring& __str, size_t* __idx = 0);
3895 _LIBCPP_FUNC_VIS long double stold(const wstring& __str, size_t* __idx = 0);
3897 _LIBCPP_FUNC_VIS wstring to_wstring(int __val);
3898 _LIBCPP_FUNC_VIS wstring to_wstring(unsigned __val);
3899 _LIBCPP_FUNC_VIS wstring to_wstring(long __val);
3900 _LIBCPP_FUNC_VIS wstring to_wstring(unsigned long __val);
3901 _LIBCPP_FUNC_VIS wstring to_wstring(long long __val);
3902 _LIBCPP_FUNC_VIS wstring to_wstring(unsigned long long __val);
3903 _LIBCPP_FUNC_VIS wstring to_wstring(float __val);
3904 _LIBCPP_FUNC_VIS wstring to_wstring(double __val);
3905 _LIBCPP_FUNC_VIS wstring to_wstring(long double __val);
3907 template<class _CharT, class _Traits, class _Allocator>
3908 const typename basic_string<_CharT, _Traits, _Allocator>::size_type
3909 basic_string<_CharT, _Traits, _Allocator>::npos;
3911 template<class _CharT, class _Traits, class _Allocator>
3912 struct _LIBCPP_TEMPLATE_VIS hash<basic_string<_CharT, _Traits, _Allocator> >
3913 : public unary_function<basic_string<_CharT, _Traits, _Allocator>, size_t>
3916 operator()(const basic_string<_CharT, _Traits, _Allocator>& __val) const _NOEXCEPT;
3919 template<class _CharT, class _Traits, class _Allocator>
3921 hash<basic_string<_CharT, _Traits, _Allocator> >::operator()(
3922 const basic_string<_CharT, _Traits, _Allocator>& __val) const _NOEXCEPT
3924 return __do_string_hash(__val.data(), __val.data() + __val.size());
3927 template<class _CharT, class _Traits, class _Allocator>
3928 basic_ostream<_CharT, _Traits>&
3929 operator<<(basic_ostream<_CharT, _Traits>& __os,
3930 const basic_string<_CharT, _Traits, _Allocator>& __str);
3932 template<class _CharT, class _Traits, class _Allocator>
3933 basic_istream<_CharT, _Traits>&
3934 operator>>(basic_istream<_CharT, _Traits>& __is,
3935 basic_string<_CharT, _Traits, _Allocator>& __str);
3937 template<class _CharT, class _Traits, class _Allocator>
3938 basic_istream<_CharT, _Traits>&
3939 getline(basic_istream<_CharT, _Traits>& __is,
3940 basic_string<_CharT, _Traits, _Allocator>& __str, _CharT __dlm);
3942 template<class _CharT, class _Traits, class _Allocator>
3943 inline _LIBCPP_INLINE_VISIBILITY
3944 basic_istream<_CharT, _Traits>&
3945 getline(basic_istream<_CharT, _Traits>& __is,
3946 basic_string<_CharT, _Traits, _Allocator>& __str);
3948 #ifndef _LIBCPP_CXX03_LANG
3950 template<class _CharT, class _Traits, class _Allocator>
3951 inline _LIBCPP_INLINE_VISIBILITY
3952 basic_istream<_CharT, _Traits>&
3953 getline(basic_istream<_CharT, _Traits>&& __is,
3954 basic_string<_CharT, _Traits, _Allocator>& __str, _CharT __dlm);
3956 template<class _CharT, class _Traits, class _Allocator>
3957 inline _LIBCPP_INLINE_VISIBILITY
3958 basic_istream<_CharT, _Traits>&
3959 getline(basic_istream<_CharT, _Traits>&& __is,
3960 basic_string<_CharT, _Traits, _Allocator>& __str);
3962 #endif // _LIBCPP_CXX03_LANG
3964 #if _LIBCPP_DEBUG_LEVEL >= 2
3966 template<class _CharT, class _Traits, class _Allocator>
3968 basic_string<_CharT, _Traits, _Allocator>::__dereferenceable(const const_iterator* __i) const
3970 return this->data() <= _VSTD::__to_raw_pointer(__i->base()) &&
3971 _VSTD::__to_raw_pointer(__i->base()) < this->data() + this->size();
3974 template<class _CharT, class _Traits, class _Allocator>
3976 basic_string<_CharT, _Traits, _Allocator>::__decrementable(const const_iterator* __i) const
3978 return this->data() < _VSTD::__to_raw_pointer(__i->base()) &&
3979 _VSTD::__to_raw_pointer(__i->base()) <= this->data() + this->size();
3982 template<class _CharT, class _Traits, class _Allocator>
3984 basic_string<_CharT, _Traits, _Allocator>::__addable(const const_iterator* __i, ptrdiff_t __n) const
3986 const value_type* __p = _VSTD::__to_raw_pointer(__i->base()) + __n;
3987 return this->data() <= __p && __p <= this->data() + this->size();
3990 template<class _CharT, class _Traits, class _Allocator>
3992 basic_string<_CharT, _Traits, _Allocator>::__subscriptable(const const_iterator* __i, ptrdiff_t __n) const
3994 const value_type* __p = _VSTD::__to_raw_pointer(__i->base()) + __n;
3995 return this->data() <= __p && __p < this->data() + this->size();
3998 #endif // _LIBCPP_DEBUG_LEVEL >= 2
4000 _LIBCPP_EXTERN_TEMPLATE(class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_string<char>)
4001 _LIBCPP_EXTERN_TEMPLATE(class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_string<wchar_t>)
4002 _LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS string operator+<char, char_traits<char>, allocator<char> >(char const*, string const&))
4004 #if _LIBCPP_STD_VER > 11
4005 // Literal suffixes for basic_string [basic.string.literals]
4006 inline namespace literals
4008 inline namespace string_literals
4010 inline _LIBCPP_INLINE_VISIBILITY
4011 basic_string<char> operator "" s( const char *__str, size_t __len )
4013 return basic_string<char> (__str, __len);
4016 inline _LIBCPP_INLINE_VISIBILITY
4017 basic_string<wchar_t> operator "" s( const wchar_t *__str, size_t __len )
4019 return basic_string<wchar_t> (__str, __len);
4022 inline _LIBCPP_INLINE_VISIBILITY
4023 basic_string<char16_t> operator "" s( const char16_t *__str, size_t __len )
4025 return basic_string<char16_t> (__str, __len);
4028 inline _LIBCPP_INLINE_VISIBILITY
4029 basic_string<char32_t> operator "" s( const char32_t *__str, size_t __len )
4031 return basic_string<char32_t> (__str, __len);
4037 _LIBCPP_END_NAMESPACE_STD
4041 #endif // _LIBCPP_STRING