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1// -*- C++ -*-
2//===--------------------------- string -----------------------------------===//
3//
4// The LLVM Compiler Infrastructure
5//
6// This file is distributed under the University of Illinois Open Source
7// License. See LICENSE.TXT for details.
8//
9//===----------------------------------------------------------------------===//
10
11#ifndef _LIBCPP_STRING
12#define _LIBCPP_STRING
13
14/*
15 string synopsis
16
17namespace std
18{
19
20template <class stateT>
21class fpos
22{
23private:
24 stateT st;
25public:
26 fpos(streamoff = streamoff());
27
28 operator streamoff() const;
29
30 stateT state() const;
31 void state(stateT);
32
33 fpos& operator+=(streamoff);
34 fpos operator+ (streamoff) const;
35 fpos& operator-=(streamoff);
36 fpos operator- (streamoff) const;
37};
38
39template <class stateT> streamoff operator-(const fpos<stateT>& x, const fpos<stateT>& y);
40
41template <class stateT> bool operator==(const fpos<stateT>& x, const fpos<stateT>& y);
42template <class stateT> bool operator!=(const fpos<stateT>& x, const fpos<stateT>& y);
43
44template <class charT>
45struct char_traits
46{
47 typedef charT char_type;
48 typedef ... int_type;
49 typedef streamoff off_type;
50 typedef streampos pos_type;
51 typedef mbstate_t state_type;
52
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;
56
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);
63
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;
69};
70
71template <> struct char_traits<char>;
72template <> struct char_traits<wchar_t>;
73
74template<class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
75class basic_string
76{
77public:
78// types:
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;
92
93 static const size_type npos = -1;
94
95 basic_string()
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());
105 template<class T>
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&);
117
118 ~basic_string();
119
120 operator basic_string_view<charT, traits>() const noexcept;
121
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)
125 noexcept(
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>);
131
132 iterator begin() noexcept;
133 const_iterator begin() const noexcept;
134 iterator end() noexcept;
135 const_iterator end() const noexcept;
136
137 reverse_iterator rbegin() noexcept;
138 const_reverse_iterator rbegin() const noexcept;
139 reverse_iterator rend() noexcept;
140 const_reverse_iterator rend() const noexcept;
141
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;
146
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;
151
152 void resize(size_type n, value_type c);
153 void resize(size_type n);
154
155 void reserve(size_type res_arg = 0);
156 void shrink_to_fit();
157 void clear() noexcept;
158 bool empty() const noexcept;
159
160 const_reference operator[](size_type pos) const;
161 reference operator[](size_type pos);
162
163 const_reference at(size_type n) const;
164 reference at(size_type n);
165
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>);
171
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
175 template <class T>
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>);
183
184 void push_back(value_type c);
185 void pop_back();
186 reference front();
187 const_reference front() const;
188 reference back();
189 const_reference back() const;
190
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
195 template <class T>
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>);
203
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);
208 template <class T>
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>);
218
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);
222
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
227 template <class T>
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>);
241
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;
244
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
248
249 const value_type* c_str() const noexcept;
250 const value_type* data() const noexcept;
251 value_type* data() noexcept; // C++17
252
253 allocator_type get_allocator() const noexcept;
254
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;
260
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;
266
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;
272
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;
278
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;
284
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;
290
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
297 template <class T>
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;
303
304 bool __invariants() const;
305};
306
307template<class charT, class traits, class Allocator>
308basic_string<charT, traits, Allocator>
309operator+(const basic_string<charT, traits, Allocator>& lhs,
310 const basic_string<charT, traits, Allocator>& rhs);
311
312template<class charT, class traits, class Allocator>
313basic_string<charT, traits, Allocator>
314operator+(const charT* lhs , const basic_string<charT,traits,Allocator>&rhs);
315
316template<class charT, class traits, class Allocator>
317basic_string<charT, traits, Allocator>
318operator+(charT lhs, const basic_string<charT,traits,Allocator>& rhs);
319
320template<class charT, class traits, class Allocator>
321basic_string<charT, traits, Allocator>
322operator+(const basic_string<charT, traits, Allocator>& lhs, const charT* rhs);
323
324template<class charT, class traits, class Allocator>
325basic_string<charT, traits, Allocator>
326operator+(const basic_string<charT, traits, Allocator>& lhs, charT rhs);
327
328template<class charT, class traits, class Allocator>
329bool operator==(const basic_string<charT, traits, Allocator>& lhs,
330 const basic_string<charT, traits, Allocator>& rhs) noexcept;
331
332template<class charT, class traits, class Allocator>
333bool operator==(const charT* lhs, const basic_string<charT, traits, Allocator>& rhs) noexcept;
334
335template<class charT, class traits, class Allocator>
336bool operator==(const basic_string<charT,traits,Allocator>& lhs, const charT* rhs) noexcept;
337
338template<class charT, class traits, class Allocator>
339bool operator!=(const basic_string<charT,traits,Allocator>& lhs,
340 const basic_string<charT, traits, Allocator>& rhs) noexcept;
341
342template<class charT, class traits, class Allocator>
343bool operator!=(const charT* lhs, const basic_string<charT, traits, Allocator>& rhs) noexcept;
344
345template<class charT, class traits, class Allocator>
346bool operator!=(const basic_string<charT, traits, Allocator>& lhs, const charT* rhs) noexcept;
347
348template<class charT, class traits, class Allocator>
349bool operator< (const basic_string<charT, traits, Allocator>& lhs,
350 const basic_string<charT, traits, Allocator>& rhs) noexcept;
351
352template<class charT, class traits, class Allocator>
353bool operator< (const basic_string<charT, traits, Allocator>& lhs, const charT* rhs) noexcept;
354
355template<class charT, class traits, class Allocator>
356bool operator< (const charT* lhs, const basic_string<charT, traits, Allocator>& rhs) noexcept;
357
358template<class charT, class traits, class Allocator>
359bool operator> (const basic_string<charT, traits, Allocator>& lhs,
360 const basic_string<charT, traits, Allocator>& rhs) noexcept;
361
362template<class charT, class traits, class Allocator>
363bool operator> (const basic_string<charT, traits, Allocator>& lhs, const charT* rhs) noexcept;
364
365template<class charT, class traits, class Allocator>
366bool operator> (const charT* lhs, const basic_string<charT, traits, Allocator>& rhs) noexcept;
367
368template<class charT, class traits, class Allocator>
369bool operator<=(const basic_string<charT, traits, Allocator>& lhs,
370 const basic_string<charT, traits, Allocator>& rhs) noexcept;
371
372template<class charT, class traits, class Allocator>
373bool operator<=(const basic_string<charT, traits, Allocator>& lhs, const charT* rhs) noexcept;
374
375template<class charT, class traits, class Allocator>
376bool operator<=(const charT* lhs, const basic_string<charT, traits, Allocator>& rhs) noexcept;
377
378template<class charT, class traits, class Allocator>
379bool operator>=(const basic_string<charT, traits, Allocator>& lhs,
380 const basic_string<charT, traits, Allocator>& rhs) noexcept;
381
382template<class charT, class traits, class Allocator>
383bool operator>=(const basic_string<charT, traits, Allocator>& lhs, const charT* rhs) noexcept;
384
385template<class charT, class traits, class Allocator>
386bool operator>=(const charT* lhs, const basic_string<charT, traits, Allocator>& rhs) noexcept;
387
388template<class charT, class traits, class Allocator>
389void swap(basic_string<charT, traits, Allocator>& lhs,
390 basic_string<charT, traits, Allocator>& rhs)
391 noexcept(noexcept(lhs.swap(rhs)));
392
393template<class charT, class traits, class Allocator>
394basic_istream<charT, traits>&
395operator>>(basic_istream<charT, traits>& is, basic_string<charT, traits, Allocator>& str);
396
397template<class charT, class traits, class Allocator>
398basic_ostream<charT, traits>&
399operator<<(basic_ostream<charT, traits>& os, const basic_string<charT, traits, Allocator>& str);
400
401template<class charT, class traits, class Allocator>
402basic_istream<charT, traits>&
403getline(basic_istream<charT, traits>& is, basic_string<charT, traits, Allocator>& str,
404 charT delim);
405
406template<class charT, class traits, class Allocator>
407basic_istream<charT, traits>&
408getline(basic_istream<charT, traits>& is, basic_string<charT, traits, Allocator>& str);
409
410typedef basic_string<char> string;
411typedef basic_string<wchar_t> wstring;
412typedef basic_string<char16_t> u16string;
413typedef basic_string<char32_t> u32string;
414
415int stoi (const string& str, size_t* idx = 0, int base = 10);
416long stol (const string& str, size_t* idx = 0, int base = 10);
417unsigned long stoul (const string& str, size_t* idx = 0, int base = 10);
418long long stoll (const string& str, size_t* idx = 0, int base = 10);
419unsigned long long stoull(const string& str, size_t* idx = 0, int base = 10);
420
421float stof (const string& str, size_t* idx = 0);
422double stod (const string& str, size_t* idx = 0);
423long double stold(const string& str, size_t* idx = 0);
424
425string to_string(int val);
426string to_string(unsigned val);
427string to_string(long val);
428string to_string(unsigned long val);
429string to_string(long long val);
430string to_string(unsigned long long val);
431string to_string(float val);
432string to_string(double val);
433string to_string(long double val);
434
435int stoi (const wstring& str, size_t* idx = 0, int base = 10);
436long stol (const wstring& str, size_t* idx = 0, int base = 10);
437unsigned long stoul (const wstring& str, size_t* idx = 0, int base = 10);
438long long stoll (const wstring& str, size_t* idx = 0, int base = 10);
439unsigned long long stoull(const wstring& str, size_t* idx = 0, int base = 10);
440
441float stof (const wstring& str, size_t* idx = 0);
442double stod (const wstring& str, size_t* idx = 0);
443long double stold(const wstring& str, size_t* idx = 0);
444
445wstring to_wstring(int val);
446wstring to_wstring(unsigned val);
447wstring to_wstring(long val);
448wstring to_wstring(unsigned long val);
449wstring to_wstring(long long val);
450wstring to_wstring(unsigned long long val);
451wstring to_wstring(float val);
452wstring to_wstring(double val);
453wstring to_wstring(long double val);
454
455template <> struct hash<string>;
456template <> struct hash<u16string>;
457template <> struct hash<u32string>;
458template <> struct hash<wstring>;
459
460basic_string<char> operator "" s( const char *str, size_t len ); // C++14
461basic_string<wchar_t> operator "" s( const wchar_t *str, size_t len ); // C++14
462basic_string<char16_t> operator "" s( const char16_t *str, size_t len ); // C++14
463basic_string<char32_t> operator "" s( const char32_t *str, size_t len ); // C++14
464
465} // std
466
467*/
468
469#include <__config>
470#include <string_view>
471#include <iosfwd>
472#include <cstring>
473#include <cstdio> // For EOF.
474#include <cwchar>
475#include <algorithm>
476#include <iterator>
477#include <utility>
478#include <memory>
479#include <stdexcept>
480#include <type_traits>
481#include <initializer_list>
482#include <__functional_base>
483#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
484#include <cstdint>
485#endif
486
487#include <__debug>
488
489#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
490#pragma GCC system_header
491#endif
492
493_LIBCPP_PUSH_MACROS
494#include <__undef_macros>
495
496
497_LIBCPP_BEGIN_NAMESPACE_STD
498
499// fpos
500
501template <class _StateT>
502class _LIBCPP_TEMPLATE_VIS fpos
503{
504private:
505 _StateT __st_;
506 streamoff __off_;
507public:
508 _LIBCPP_INLINE_VISIBILITY fpos(streamoff __off = streamoff()) : __st_(), __off_(__off) {}
509
510 _LIBCPP_INLINE_VISIBILITY operator streamoff() const {return __off_;}
511
512 _LIBCPP_INLINE_VISIBILITY _StateT state() const {return __st_;}
513 _LIBCPP_INLINE_VISIBILITY void state(_StateT __st) {__st_ = __st;}
514
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;}
519};
520
521template <class _StateT>
522inline _LIBCPP_INLINE_VISIBILITY
523streamoff operator-(const fpos<_StateT>& __x, const fpos<_StateT>& __y)
524 {return streamoff(__x) - streamoff(__y);}
525
526template <class _StateT>
527inline _LIBCPP_INLINE_VISIBILITY
528bool operator==(const fpos<_StateT>& __x, const fpos<_StateT>& __y)
529 {return streamoff(__x) == streamoff(__y);}
530
531template <class _StateT>
532inline _LIBCPP_INLINE_VISIBILITY
533bool operator!=(const fpos<_StateT>& __x, const fpos<_StateT>& __y)
534 {return streamoff(__x) != streamoff(__y);}
535
536// basic_string
537
538template<class _CharT, class _Traits, class _Allocator>
539basic_string<_CharT, _Traits, _Allocator>
540operator+(const basic_string<_CharT, _Traits, _Allocator>& __x,
541 const basic_string<_CharT, _Traits, _Allocator>& __y);
542
543template<class _CharT, class _Traits, class _Allocator>
544basic_string<_CharT, _Traits, _Allocator>
545operator+(const _CharT* __x, const basic_string<_CharT,_Traits,_Allocator>& __y);
546
547template<class _CharT, class _Traits, class _Allocator>
548basic_string<_CharT, _Traits, _Allocator>
549operator+(_CharT __x, const basic_string<_CharT,_Traits,_Allocator>& __y);
550
551template<class _CharT, class _Traits, class _Allocator>
552basic_string<_CharT, _Traits, _Allocator>
553operator+(const basic_string<_CharT, _Traits, _Allocator>& __x, const _CharT* __y);
554
555template<class _CharT, class _Traits, class _Allocator>
556basic_string<_CharT, _Traits, _Allocator>
557operator+(const basic_string<_CharT, _Traits, _Allocator>& __x, _CharT __y);
558
559_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS string operator+<char, char_traits<char>, allocator<char> >(char const*, string const&))
560
561template <bool>
562class _LIBCPP_TEMPLATE_VIS __basic_string_common
563{
564protected:
565 _LIBCPP_NORETURN void __throw_length_error() const;
566 _LIBCPP_NORETURN void __throw_out_of_range() const;
567};
568
569template <bool __b>
570void
571__basic_string_common<__b>::__throw_length_error() const
572{
573 _VSTD::__throw_length_error("basic_string");
574}
575
576template <bool __b>
577void
578__basic_string_common<__b>::__throw_out_of_range() const
579{
580 _VSTD::__throw_out_of_range("basic_string");
581}
582
583_LIBCPP_EXTERN_TEMPLATE(class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS __basic_string_common<true>)
584
585#ifdef _LIBCPP_NO_EXCEPTIONS
586template <class _Iter>
587struct __libcpp_string_gets_noexcept_iterator_impl : public true_type {};
588#elif defined(_LIBCPP_HAS_NO_NOEXCEPT)
589template <class _Iter>
590struct __libcpp_string_gets_noexcept_iterator_impl : public false_type {};
591#else
592template <class _Iter, bool = __is_forward_iterator<_Iter>::value>
593struct __libcpp_string_gets_noexcept_iterator_impl : public _LIBCPP_BOOL_CONSTANT((
594 noexcept(++(declval<_Iter&>())) &&
595 is_nothrow_assignable<_Iter&, _Iter>::value &&
596 noexcept(declval<_Iter>() == declval<_Iter>()) &&
597 noexcept(*declval<_Iter>())
598)) {};
599
600template <class _Iter>
601struct __libcpp_string_gets_noexcept_iterator_impl<_Iter, false> : public false_type {};
602#endif
603
604
605template <class _Iter>
606struct __libcpp_string_gets_noexcept_iterator
607 : public _LIBCPP_BOOL_CONSTANT(__libcpp_is_trivial_iterator<_Iter>::value || __libcpp_string_gets_noexcept_iterator_impl<_Iter>::value) {};
608
609template <class _CharT, class _Traits, class _Tp>
610struct __can_be_converted_to_string_view : public _LIBCPP_BOOL_CONSTANT(
611 ( is_convertible<const _Tp&, basic_string_view<_CharT, _Traits> >::value &&
612 !is_convertible<const _Tp&, const _CharT*>::value)) {};
613
614#ifdef _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT
615
616template <class _CharT, size_t = sizeof(_CharT)>
617struct __padding
618{
619 unsigned char __xx[sizeof(_CharT)-1];
620};
621
622template <class _CharT>
623struct __padding<_CharT, 1>
624{
625};
626
627#endif // _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT
628
629template<class _CharT, class _Traits, class _Allocator>
630class _LIBCPP_TEMPLATE_VIS basic_string
631 : private __basic_string_common<true>
632{
633public:
634 typedef basic_string __self;
635 typedef basic_string_view<_CharT, _Traits> __self_view;
636 typedef _Traits traits_type;
637 typedef _CharT value_type;
638 typedef _Allocator allocator_type;
639 typedef allocator_traits<allocator_type> __alloc_traits;
640 typedef typename __alloc_traits::size_type size_type;
641 typedef typename __alloc_traits::difference_type difference_type;
642 typedef value_type& reference;
643 typedef const value_type& const_reference;
644 typedef typename __alloc_traits::pointer pointer;
645 typedef typename __alloc_traits::const_pointer const_pointer;
646
647 static_assert(is_pod<value_type>::value, "Character type of basic_string must be a POD");
648 static_assert((is_same<_CharT, typename traits_type::char_type>::value),
649 "traits_type::char_type must be the same type as CharT");
650 static_assert((is_same<typename allocator_type::value_type, value_type>::value),
651 "Allocator::value_type must be same type as value_type");
652#if defined(_LIBCPP_RAW_ITERATORS)
653 typedef pointer iterator;
654 typedef const_pointer const_iterator;
655#else // defined(_LIBCPP_RAW_ITERATORS)
656 typedef __wrap_iter<pointer> iterator;
657 typedef __wrap_iter<const_pointer> const_iterator;
658#endif // defined(_LIBCPP_RAW_ITERATORS)
659 typedef _VSTD::reverse_iterator<iterator> reverse_iterator;
660 typedef _VSTD::reverse_iterator<const_iterator> const_reverse_iterator;
661
662private:
663
664#ifdef _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT
665
666 struct __long
667 {
668 pointer __data_;
669 size_type __size_;
670 size_type __cap_;
671 };
672
673#if _LIBCPP_BIG_ENDIAN
674 static const size_type __short_mask = 0x01;
675 static const size_type __long_mask = 0x1ul;
676#else // _LIBCPP_BIG_ENDIAN
677 static const size_type __short_mask = 0x80;
678 static const size_type __long_mask = ~(size_type(~0) >> 1);
679#endif // _LIBCPP_BIG_ENDIAN
680
681 enum {__min_cap = (sizeof(__long) - 1)/sizeof(value_type) > 2 ?
682 (sizeof(__long) - 1)/sizeof(value_type) : 2};
683
684 struct __short
685 {
686 value_type __data_[__min_cap];
687 struct
688 : __padding<value_type>
689 {
690 unsigned char __size_;
691 };
692 };
693
694#else
695
696 struct __long
697 {
698 size_type __cap_;
699 size_type __size_;
700 pointer __data_;
701 };
702
703#if _LIBCPP_BIG_ENDIAN
704 static const size_type __short_mask = 0x80;
705 static const size_type __long_mask = ~(size_type(~0) >> 1);
706#else // _LIBCPP_BIG_ENDIAN
707 static const size_type __short_mask = 0x01;
708 static const size_type __long_mask = 0x1ul;
709#endif // _LIBCPP_BIG_ENDIAN
710
711 enum {__min_cap = (sizeof(__long) - 1)/sizeof(value_type) > 2 ?
712 (sizeof(__long) - 1)/sizeof(value_type) : 2};
713
714 struct __short
715 {
716 union
717 {
718 unsigned char __size_;
719 value_type __lx;
720 };
721 value_type __data_[__min_cap];
722 };
723
724#endif // _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT
725
726 union __ulx{__long __lx; __short __lxx;};
727
728 enum {__n_words = sizeof(__ulx) / sizeof(size_type)};
729
730 struct __raw
731 {
732 size_type __words[__n_words];
733 };
734
735 struct __rep
736 {
737 union
738 {
739 __long __l;
740 __short __s;
741 __raw __r;
742 };
743 };
744
745 __compressed_pair<__rep, allocator_type> __r_;
746
747public:
748 static const size_type npos = -1;
749
750 _LIBCPP_INLINE_VISIBILITY basic_string()
751 _NOEXCEPT_(is_nothrow_default_constructible<allocator_type>::value);
752
753 _LIBCPP_INLINE_VISIBILITY explicit basic_string(const allocator_type& __a)
754#if _LIBCPP_STD_VER <= 14
755 _NOEXCEPT_(is_nothrow_copy_constructible<allocator_type>::value);
756#else
757 _NOEXCEPT;
758#endif
759
760 basic_string(const basic_string& __str);
761 basic_string(const basic_string& __str, const allocator_type& __a);
762
763#ifndef _LIBCPP_CXX03_LANG
764 _LIBCPP_INLINE_VISIBILITY
765 basic_string(basic_string&& __str)
766#if _LIBCPP_STD_VER <= 14
767 _NOEXCEPT_(is_nothrow_move_constructible<allocator_type>::value);
768#else
769 _NOEXCEPT;
770#endif
771
772 _LIBCPP_INLINE_VISIBILITY
773 basic_string(basic_string&& __str, const allocator_type& __a);
774#endif // _LIBCPP_CXX03_LANG
775 _LIBCPP_INLINE_VISIBILITY basic_string(const _CharT* __s);
776 _LIBCPP_INLINE_VISIBILITY
777 basic_string(const _CharT* __s, const _Allocator& __a);
778 _LIBCPP_INLINE_VISIBILITY
779 basic_string(const _CharT* __s, size_type __n);
780 _LIBCPP_INLINE_VISIBILITY
781 basic_string(const _CharT* __s, size_type __n, const _Allocator& __a);
782 _LIBCPP_INLINE_VISIBILITY
783 basic_string(size_type __n, _CharT __c);
784 _LIBCPP_INLINE_VISIBILITY
785 basic_string(size_type __n, _CharT __c, const _Allocator& __a);
786 basic_string(const basic_string& __str, size_type __pos, size_type __n,
787 const _Allocator& __a = _Allocator());
788 _LIBCPP_INLINE_VISIBILITY
789 basic_string(const basic_string& __str, size_type __pos,
790 const _Allocator& __a = _Allocator());
791 template<class _Tp>
792 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS
793 basic_string(const _Tp& __t, size_type __pos, size_type __n,
794 const allocator_type& __a = allocator_type(),
795 typename enable_if<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, void>::type* = 0);
796 _LIBCPP_INLINE_VISIBILITY explicit
797 basic_string(__self_view __sv);
798 _LIBCPP_INLINE_VISIBILITY
799 basic_string(__self_view __sv, const _Allocator& __a);
800 template<class _InputIterator>
801 _LIBCPP_INLINE_VISIBILITY
802 basic_string(_InputIterator __first, _InputIterator __last);
803 template<class _InputIterator>
804 _LIBCPP_INLINE_VISIBILITY
805 basic_string(_InputIterator __first, _InputIterator __last, const allocator_type& __a);
806#ifndef _LIBCPP_CXX03_LANG
807 _LIBCPP_INLINE_VISIBILITY
808 basic_string(initializer_list<_CharT> __il);
809 _LIBCPP_INLINE_VISIBILITY
810 basic_string(initializer_list<_CharT> __il, const _Allocator& __a);
811#endif // _LIBCPP_CXX03_LANG
812
813 inline ~basic_string();
814
815 _LIBCPP_INLINE_VISIBILITY
816 operator __self_view() const _NOEXCEPT { return __self_view(data(), size()); }
817
818 basic_string& operator=(const basic_string& __str);
819
820#ifndef _LIBCPP_CXX03_LANG
821 template <class = void>
822#endif
823 _LIBCPP_INLINE_VISIBILITY
824 basic_string& operator=(__self_view __sv) {return assign(__sv);}
825#ifndef _LIBCPP_CXX03_LANG
826 _LIBCPP_INLINE_VISIBILITY
827 basic_string& operator=(basic_string&& __str)
828 _NOEXCEPT_((__noexcept_move_assign_container<_Allocator, __alloc_traits>::value));
829 _LIBCPP_INLINE_VISIBILITY
830 basic_string& operator=(initializer_list<value_type> __il) {return assign(__il.begin(), __il.size());}
831#endif
832 _LIBCPP_INLINE_VISIBILITY basic_string& operator=(const value_type* __s) {return assign(__s);}
833 basic_string& operator=(value_type __c);
834
835#if _LIBCPP_DEBUG_LEVEL >= 2
836 _LIBCPP_INLINE_VISIBILITY
837 iterator begin() _NOEXCEPT
838 {return iterator(this, __get_pointer());}
839 _LIBCPP_INLINE_VISIBILITY
840 const_iterator begin() const _NOEXCEPT
841 {return const_iterator(this, __get_pointer());}
842 _LIBCPP_INLINE_VISIBILITY
843 iterator end() _NOEXCEPT
844 {return iterator(this, __get_pointer() + size());}
845 _LIBCPP_INLINE_VISIBILITY
846 const_iterator end() const _NOEXCEPT
847 {return const_iterator(this, __get_pointer() + size());}
848#else
849 _LIBCPP_INLINE_VISIBILITY
850 iterator begin() _NOEXCEPT
851 {return iterator(__get_pointer());}
852 _LIBCPP_INLINE_VISIBILITY
853 const_iterator begin() const _NOEXCEPT
854 {return const_iterator(__get_pointer());}
855 _LIBCPP_INLINE_VISIBILITY
856 iterator end() _NOEXCEPT
857 {return iterator(__get_pointer() + size());}
858 _LIBCPP_INLINE_VISIBILITY
859 const_iterator end() const _NOEXCEPT
860 {return const_iterator(__get_pointer() + size());}
861#endif // _LIBCPP_DEBUG_LEVEL >= 2
862 _LIBCPP_INLINE_VISIBILITY
863 reverse_iterator rbegin() _NOEXCEPT
864 {return reverse_iterator(end());}
865 _LIBCPP_INLINE_VISIBILITY
866 const_reverse_iterator rbegin() const _NOEXCEPT
867 {return const_reverse_iterator(end());}
868 _LIBCPP_INLINE_VISIBILITY
869 reverse_iterator rend() _NOEXCEPT
870 {return reverse_iterator(begin());}
871 _LIBCPP_INLINE_VISIBILITY
872 const_reverse_iterator rend() const _NOEXCEPT
873 {return const_reverse_iterator(begin());}
874
875 _LIBCPP_INLINE_VISIBILITY
876 const_iterator cbegin() const _NOEXCEPT
877 {return begin();}
878 _LIBCPP_INLINE_VISIBILITY
879 const_iterator cend() const _NOEXCEPT
880 {return end();}
881 _LIBCPP_INLINE_VISIBILITY
882 const_reverse_iterator crbegin() const _NOEXCEPT
883 {return rbegin();}
884 _LIBCPP_INLINE_VISIBILITY
885 const_reverse_iterator crend() const _NOEXCEPT
886 {return rend();}
887
888 _LIBCPP_INLINE_VISIBILITY size_type size() const _NOEXCEPT
889 {return __is_long() ? __get_long_size() : __get_short_size();}
890 _LIBCPP_INLINE_VISIBILITY size_type length() const _NOEXCEPT {return size();}
891 _LIBCPP_INLINE_VISIBILITY size_type max_size() const _NOEXCEPT;
892 _LIBCPP_INLINE_VISIBILITY size_type capacity() const _NOEXCEPT
893 {return (__is_long() ? __get_long_cap()
894 : static_cast<size_type>(__min_cap)) - 1;}
895
896 void resize(size_type __n, value_type __c);
897 _LIBCPP_INLINE_VISIBILITY void resize(size_type __n) {resize(__n, value_type());}
898
899 void reserve(size_type __res_arg = 0);
900 _LIBCPP_INLINE_VISIBILITY
901 void shrink_to_fit() _NOEXCEPT {reserve();}
902 _LIBCPP_INLINE_VISIBILITY
903 void clear() _NOEXCEPT;
904 _LIBCPP_INLINE_VISIBILITY bool empty() const _NOEXCEPT {return size() == 0;}
905
906 _LIBCPP_INLINE_VISIBILITY const_reference operator[](size_type __pos) const _NOEXCEPT;
907 _LIBCPP_INLINE_VISIBILITY reference operator[](size_type __pos) _NOEXCEPT;
908
909 const_reference at(size_type __n) const;
910 reference at(size_type __n);
911
912 _LIBCPP_INLINE_VISIBILITY basic_string& operator+=(const basic_string& __str) {return append(__str);}
913 _LIBCPP_INLINE_VISIBILITY basic_string& operator+=(__self_view __sv) {return append(__sv);}
914 _LIBCPP_INLINE_VISIBILITY basic_string& operator+=(const value_type* __s) {return append(__s);}
915 _LIBCPP_INLINE_VISIBILITY basic_string& operator+=(value_type __c) {push_back(__c); return *this;}
916#ifndef _LIBCPP_CXX03_LANG
917 _LIBCPP_INLINE_VISIBILITY basic_string& operator+=(initializer_list<value_type> __il) {return append(__il);}
918#endif // _LIBCPP_CXX03_LANG
919
920 _LIBCPP_INLINE_VISIBILITY
921 basic_string& append(const basic_string& __str);
922 _LIBCPP_INLINE_VISIBILITY
923 basic_string& append(__self_view __sv) { return append(__sv.data(), __sv.size()); }
924 basic_string& append(const basic_string& __str, size_type __pos, size_type __n=npos);
925 template <class _Tp>
926 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS
927 typename enable_if
928 <
929 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value,
930 basic_string&
931 >::type
932 append(const _Tp& __t, size_type __pos, size_type __n=npos);
933 basic_string& append(const value_type* __s, size_type __n);
934 basic_string& append(const value_type* __s);
935 basic_string& append(size_type __n, value_type __c);
936 template <class _ForwardIterator>
937 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS
938 basic_string& __append_forward_unsafe(_ForwardIterator, _ForwardIterator);
939 template<class _InputIterator>
940 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS
941 typename enable_if
942 <
943 __is_exactly_input_iterator<_InputIterator>::value
944 || !__libcpp_string_gets_noexcept_iterator<_InputIterator>::value,
945 basic_string&
946 >::type
947 _LIBCPP_INLINE_VISIBILITY
948 append(_InputIterator __first, _InputIterator __last) {
949 const basic_string __temp (__first, __last, __alloc());
950 append(__temp.data(), __temp.size());
951 return *this;
952 }
953 template<class _ForwardIterator>
954 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS
955 typename enable_if
956 <
957 __is_forward_iterator<_ForwardIterator>::value
958 && __libcpp_string_gets_noexcept_iterator<_ForwardIterator>::value,
959 basic_string&
960 >::type
961 _LIBCPP_INLINE_VISIBILITY
962 append(_ForwardIterator __first, _ForwardIterator __last) {
963 return __append_forward_unsafe(__first, __last);
964 }
965
966#ifndef _LIBCPP_CXX03_LANG
967 _LIBCPP_INLINE_VISIBILITY
968 basic_string& append(initializer_list<value_type> __il) {return append(__il.begin(), __il.size());}
969#endif // _LIBCPP_CXX03_LANG
970
971 void push_back(value_type __c);
972 _LIBCPP_INLINE_VISIBILITY
973 void pop_back();
974 _LIBCPP_INLINE_VISIBILITY reference front();
975 _LIBCPP_INLINE_VISIBILITY const_reference front() const;
976 _LIBCPP_INLINE_VISIBILITY reference back();
977 _LIBCPP_INLINE_VISIBILITY const_reference back() const;
978
979 _LIBCPP_INLINE_VISIBILITY
980 basic_string& assign(__self_view __sv) { return assign(__sv.data(), __sv.size()); }
981 _LIBCPP_INLINE_VISIBILITY
982 basic_string& assign(const basic_string& __str) { return *this = __str; }
983#ifndef _LIBCPP_CXX03_LANG
984 _LIBCPP_INLINE_VISIBILITY
985 basic_string& assign(basic_string&& __str)
986 _NOEXCEPT_((__noexcept_move_assign_container<_Allocator, __alloc_traits>::value))
987 {*this = _VSTD::move(__str); return *this;}
988#endif
989 basic_string& assign(const basic_string& __str, size_type __pos, size_type __n=npos);
990 template <class _Tp>
991 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS
992 typename enable_if
993 <
994 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value,
995 basic_string&
996 >::type
997 assign(const _Tp & __t, size_type __pos, size_type __n=npos);
998 basic_string& assign(const value_type* __s, size_type __n);
999 basic_string& assign(const value_type* __s);
1000 basic_string& assign(size_type __n, value_type __c);
1001 template<class _InputIterator>
1002 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS
1003 typename enable_if
1004 <
1005 __is_exactly_input_iterator<_InputIterator>::value
1006 || !__libcpp_string_gets_noexcept_iterator<_InputIterator>::value,
1007 basic_string&
1008 >::type
1009 assign(_InputIterator __first, _InputIterator __last);
1010 template<class _ForwardIterator>
1011 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS
1012 typename enable_if
1013 <
1014 __is_forward_iterator<_ForwardIterator>::value
1015 && __libcpp_string_gets_noexcept_iterator<_ForwardIterator>::value,
1016 basic_string&
1017 >::type
1018 assign(_ForwardIterator __first, _ForwardIterator __last);
1019#ifndef _LIBCPP_CXX03_LANG
1020 _LIBCPP_INLINE_VISIBILITY
1021 basic_string& assign(initializer_list<value_type> __il) {return assign(__il.begin(), __il.size());}
1022#endif // _LIBCPP_CXX03_LANG
1023
1024 _LIBCPP_INLINE_VISIBILITY
1025 basic_string& insert(size_type __pos1, const basic_string& __str);
1026 _LIBCPP_INLINE_VISIBILITY
1027 basic_string& insert(size_type __pos1, __self_view __sv) { return insert(__pos1, __sv.data(), __sv.size()); }
1028 template <class _Tp>
1029 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS
1030 typename enable_if
1031 <
1032 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value,
1033 basic_string&
1034 >::type
1035 insert(size_type __pos1, const _Tp& __t, size_type __pos2, size_type __n=npos);
1036 basic_string& insert(size_type __pos1, const basic_string& __str, size_type __pos2, size_type __n=npos);
1037 basic_string& insert(size_type __pos, const value_type* __s, size_type __n);
1038 basic_string& insert(size_type __pos, const value_type* __s);
1039 basic_string& insert(size_type __pos, size_type __n, value_type __c);
1040 iterator insert(const_iterator __pos, value_type __c);
1041 _LIBCPP_INLINE_VISIBILITY
1042 iterator insert(const_iterator __pos, size_type __n, value_type __c);
1043 template<class _InputIterator>
1044 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS
1045 typename enable_if
1046 <
1047 __is_exactly_input_iterator<_InputIterator>::value
1048 || !__libcpp_string_gets_noexcept_iterator<_InputIterator>::value,
1049 iterator
1050 >::type
1051 insert(const_iterator __pos, _InputIterator __first, _InputIterator __last);
1052 template<class _ForwardIterator>
1053 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS
1054 typename enable_if
1055 <
1056 __is_forward_iterator<_ForwardIterator>::value
1057 && __libcpp_string_gets_noexcept_iterator<_ForwardIterator>::value,
1058 iterator
1059 >::type
1060 insert(const_iterator __pos, _ForwardIterator __first, _ForwardIterator __last);
1061#ifndef _LIBCPP_CXX03_LANG
1062 _LIBCPP_INLINE_VISIBILITY
1063 iterator insert(const_iterator __pos, initializer_list<value_type> __il)
1064 {return insert(__pos, __il.begin(), __il.end());}
1065#endif // _LIBCPP_CXX03_LANG
1066
1067 basic_string& erase(size_type __pos = 0, size_type __n = npos);
1068 _LIBCPP_INLINE_VISIBILITY
1069 iterator erase(const_iterator __pos);
1070 _LIBCPP_INLINE_VISIBILITY
1071 iterator erase(const_iterator __first, const_iterator __last);
1072
1073 _LIBCPP_INLINE_VISIBILITY
1074 basic_string& replace(size_type __pos1, size_type __n1, const basic_string& __str);
1075 _LIBCPP_INLINE_VISIBILITY
1076 basic_string& replace(size_type __pos1, size_type __n1, __self_view __sv) { return replace(__pos1, __n1, __sv.data(), __sv.size()); }
1077 basic_string& replace(size_type __pos1, size_type __n1, const basic_string& __str, size_type __pos2, size_type __n2=npos);
1078 template <class _Tp>
1079 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS
1080 typename enable_if
1081 <
1082 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value,
1083 basic_string&
1084 >::type
1085 replace(size_type __pos1, size_type __n1, const _Tp& __t, size_type __pos2, size_type __n2=npos);
1086 basic_string& replace(size_type __pos, size_type __n1, const value_type* __s, size_type __n2);
1087 basic_string& replace(size_type __pos, size_type __n1, const value_type* __s);
1088 basic_string& replace(size_type __pos, size_type __n1, size_type __n2, value_type __c);
1089 _LIBCPP_INLINE_VISIBILITY
1090 basic_string& replace(const_iterator __i1, const_iterator __i2, const basic_string& __str);
1091 _LIBCPP_INLINE_VISIBILITY
1092 basic_string& replace(const_iterator __i1, const_iterator __i2, __self_view __sv) { return replace(__i1 - begin(), __i2 - __i1, __sv); }
1093 _LIBCPP_INLINE_VISIBILITY
1094 basic_string& replace(const_iterator __i1, const_iterator __i2, const value_type* __s, size_type __n);
1095 _LIBCPP_INLINE_VISIBILITY
1096 basic_string& replace(const_iterator __i1, const_iterator __i2, const value_type* __s);
1097 _LIBCPP_INLINE_VISIBILITY
1098 basic_string& replace(const_iterator __i1, const_iterator __i2, size_type __n, value_type __c);
1099 template<class _InputIterator>
1100 _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS
1101 typename enable_if
1102 <
1103 __is_input_iterator<_InputIterator>::value,
1104 basic_string&
1105 >::type
1106 replace(const_iterator __i1, const_iterator __i2, _InputIterator __j1, _InputIterator __j2);
1107#ifndef _LIBCPP_CXX03_LANG
1108 _LIBCPP_INLINE_VISIBILITY
1109 basic_string& replace(const_iterator __i1, const_iterator __i2, initializer_list<value_type> __il)
1110 {return replace(__i1, __i2, __il.begin(), __il.end());}
1111#endif // _LIBCPP_CXX03_LANG
1112
1113 size_type copy(value_type* __s, size_type __n, size_type __pos = 0) const;
1114 _LIBCPP_INLINE_VISIBILITY
1115 basic_string substr(size_type __pos = 0, size_type __n = npos) const;
1116
1117 _LIBCPP_INLINE_VISIBILITY
1118 void swap(basic_string& __str)
1119#if _LIBCPP_STD_VER >= 14
1120 _NOEXCEPT_DEBUG;
1121#else
1122 _NOEXCEPT_DEBUG_(!__alloc_traits::propagate_on_container_swap::value ||
1123 __is_nothrow_swappable<allocator_type>::value);
1124#endif
1125
1126 _LIBCPP_INLINE_VISIBILITY
1127 const value_type* c_str() const _NOEXCEPT {return data();}
1128 _LIBCPP_INLINE_VISIBILITY
1129 const value_type* data() const _NOEXCEPT {return _VSTD::__to_raw_pointer(__get_pointer());}
1130#if _LIBCPP_STD_VER > 14
1131 _LIBCPP_INLINE_VISIBILITY
1132 value_type* data() _NOEXCEPT {return _VSTD::__to_raw_pointer(__get_pointer());}
1133#endif
1134
1135 _LIBCPP_INLINE_VISIBILITY
1136 allocator_type get_allocator() const _NOEXCEPT {return __alloc();}
1137
1138 _LIBCPP_INLINE_VISIBILITY
1139 size_type find(const basic_string& __str, size_type __pos = 0) const _NOEXCEPT;
1140 _LIBCPP_INLINE_VISIBILITY
1141 size_type find(__self_view __sv, size_type __pos = 0) const _NOEXCEPT;
1142 size_type find(const value_type* __s, size_type __pos, size_type __n) const _NOEXCEPT;
1143 _LIBCPP_INLINE_VISIBILITY
1144 size_type find(const value_type* __s, size_type __pos = 0) const _NOEXCEPT;
1145 size_type find(value_type __c, size_type __pos = 0) const _NOEXCEPT;
1146
1147 _LIBCPP_INLINE_VISIBILITY
1148 size_type rfind(const basic_string& __str, size_type __pos = npos) const _NOEXCEPT;
1149 _LIBCPP_INLINE_VISIBILITY
1150 size_type rfind(__self_view __sv, size_type __pos = 0) const _NOEXCEPT;
1151 size_type rfind(const value_type* __s, size_type __pos, size_type __n) const _NOEXCEPT;
1152 _LIBCPP_INLINE_VISIBILITY
1153 size_type rfind(const value_type* __s, size_type __pos = npos) const _NOEXCEPT;
1154 size_type rfind(value_type __c, size_type __pos = npos) const _NOEXCEPT;
1155
1156 _LIBCPP_INLINE_VISIBILITY
1157 size_type find_first_of(const basic_string& __str, size_type __pos = 0) const _NOEXCEPT;
1158 _LIBCPP_INLINE_VISIBILITY
1159 size_type find_first_of(__self_view __sv, size_type __pos = 0) const _NOEXCEPT;
1160 size_type find_first_of(const value_type* __s, size_type __pos, size_type __n) const _NOEXCEPT;
1161 _LIBCPP_INLINE_VISIBILITY
1162 size_type find_first_of(const value_type* __s, size_type __pos = 0) const _NOEXCEPT;
1163 _LIBCPP_INLINE_VISIBILITY
1164 size_type find_first_of(value_type __c, size_type __pos = 0) const _NOEXCEPT;
1165
1166 _LIBCPP_INLINE_VISIBILITY
1167 size_type find_last_of(const basic_string& __str, size_type __pos = npos) const _NOEXCEPT;
1168 _LIBCPP_INLINE_VISIBILITY
1169 size_type find_last_of(__self_view __sv, size_type __pos = 0) const _NOEXCEPT;
1170 size_type find_last_of(const value_type* __s, size_type __pos, size_type __n) const _NOEXCEPT;
1171 _LIBCPP_INLINE_VISIBILITY
1172 size_type find_last_of(const value_type* __s, size_type __pos = npos) const _NOEXCEPT;
1173 _LIBCPP_INLINE_VISIBILITY
1174 size_type find_last_of(value_type __c, size_type __pos = npos) const _NOEXCEPT;
1175
1176 _LIBCPP_INLINE_VISIBILITY
1177 size_type find_first_not_of(const basic_string& __str, size_type __pos = 0) const _NOEXCEPT;
1178 _LIBCPP_INLINE_VISIBILITY
1179 size_type find_first_not_of(__self_view __sv, size_type __pos = 0) const _NOEXCEPT;
1180 size_type find_first_not_of(const value_type* __s, size_type __pos, size_type __n) const _NOEXCEPT;
1181 _LIBCPP_INLINE_VISIBILITY
1182 size_type find_first_not_of(const value_type* __s, size_type __pos = 0) const _NOEXCEPT;
1183 _LIBCPP_INLINE_VISIBILITY
1184 size_type find_first_not_of(value_type __c, size_type __pos = 0) const _NOEXCEPT;
1185
1186 _LIBCPP_INLINE_VISIBILITY
1187 size_type find_last_not_of(const basic_string& __str, size_type __pos = npos) const _NOEXCEPT;
1188 _LIBCPP_INLINE_VISIBILITY
1189 size_type find_last_not_of(__self_view __sv, size_type __pos = 0) const _NOEXCEPT;
1190 size_type find_last_not_of(const value_type* __s, size_type __pos, size_type __n) const _NOEXCEPT;
1191 _LIBCPP_INLINE_VISIBILITY
1192 size_type find_last_not_of(const value_type* __s, size_type __pos = npos) const _NOEXCEPT;
1193 _LIBCPP_INLINE_VISIBILITY
1194 size_type find_last_not_of(value_type __c, size_type __pos = npos) const _NOEXCEPT;
1195
1196 _LIBCPP_INLINE_VISIBILITY
1197 int compare(const basic_string& __str) const _NOEXCEPT;
1198 _LIBCPP_INLINE_VISIBILITY
1199 int compare(__self_view __sv) const _NOEXCEPT;
1200 _LIBCPP_INLINE_VISIBILITY
1201 int compare(size_type __pos1, size_type __n1, __self_view __sv) const;
1202 _LIBCPP_INLINE_VISIBILITY
1203 int compare(size_type __pos1, size_type __n1, const basic_string& __str) const;
1204 int compare(size_type __pos1, size_type __n1, const basic_string& __str, size_type __pos2, size_type __n2=npos) const;
1205 template <class _Tp>
1206 inline _LIBCPP_INLINE_VISIBILITY
1207 typename enable_if
1208 <
1209 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value,
1210 int
1211 >::type
1212 compare(size_type __pos1, size_type __n1, const _Tp& __t, size_type __pos2, size_type __n2=npos) const;
1213 int compare(const value_type* __s) const _NOEXCEPT;
1214 int compare(size_type __pos1, size_type __n1, const value_type* __s) const;
1215 int compare(size_type __pos1, size_type __n1, const value_type* __s, size_type __n2) const;
1216
1217 _LIBCPP_INLINE_VISIBILITY bool __invariants() const;
1218
1219 _LIBCPP_INLINE_VISIBILITY
1220 bool __is_long() const _NOEXCEPT
1221 {return bool(__r_.first().__s.__size_ & __short_mask);}
1222
1223#if _LIBCPP_DEBUG_LEVEL >= 2
1224
1225 bool __dereferenceable(const const_iterator* __i) const;
1226 bool __decrementable(const const_iterator* __i) const;
1227 bool __addable(const const_iterator* __i, ptrdiff_t __n) const;
1228 bool __subscriptable(const const_iterator* __i, ptrdiff_t __n) const;
1229
1230#endif // _LIBCPP_DEBUG_LEVEL >= 2
1231
1232private:
1233 _LIBCPP_INLINE_VISIBILITY
1234 allocator_type& __alloc() _NOEXCEPT
1235 {return __r_.second();}
1236 _LIBCPP_INLINE_VISIBILITY
1237 const allocator_type& __alloc() const _NOEXCEPT
1238 {return __r_.second();}
1239
1240#ifdef _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT
1241
1242 _LIBCPP_INLINE_VISIBILITY
1243 void __set_short_size(size_type __s) _NOEXCEPT
1244# if _LIBCPP_BIG_ENDIAN
1245 {__r_.first().__s.__size_ = (unsigned char)(__s << 1);}
1246# else
1247 {__r_.first().__s.__size_ = (unsigned char)(__s);}
1248# endif
1249
1250 _LIBCPP_INLINE_VISIBILITY
1251 size_type __get_short_size() const _NOEXCEPT
1252# if _LIBCPP_BIG_ENDIAN
1253 {return __r_.first().__s.__size_ >> 1;}
1254# else
1255 {return __r_.first().__s.__size_;}
1256# endif
1257
1258#else // _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT
1259
1260 _LIBCPP_INLINE_VISIBILITY
1261 void __set_short_size(size_type __s) _NOEXCEPT
1262# if _LIBCPP_BIG_ENDIAN
1263 {__r_.first().__s.__size_ = (unsigned char)(__s);}
1264# else
1265 {__r_.first().__s.__size_ = (unsigned char)(__s << 1);}
1266# endif
1267
1268 _LIBCPP_INLINE_VISIBILITY
1269 size_type __get_short_size() const _NOEXCEPT
1270# if _LIBCPP_BIG_ENDIAN
1271 {return __r_.first().__s.__size_;}
1272# else
1273 {return __r_.first().__s.__size_ >> 1;}
1274# endif
1275
1276#endif // _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT
1277
1278 _LIBCPP_INLINE_VISIBILITY
1279 void __set_long_size(size_type __s) _NOEXCEPT
1280 {__r_.first().__l.__size_ = __s;}
1281 _LIBCPP_INLINE_VISIBILITY
1282 size_type __get_long_size() const _NOEXCEPT
1283 {return __r_.first().__l.__size_;}
1284 _LIBCPP_INLINE_VISIBILITY
1285 void __set_size(size_type __s) _NOEXCEPT
1286 {if (__is_long()) __set_long_size(__s); else __set_short_size(__s);}
1287
1288 _LIBCPP_INLINE_VISIBILITY
1289 void __set_long_cap(size_type __s) _NOEXCEPT
1290 {__r_.first().__l.__cap_ = __long_mask | __s;}
1291 _LIBCPP_INLINE_VISIBILITY
1292 size_type __get_long_cap() const _NOEXCEPT
1293 {return __r_.first().__l.__cap_ & size_type(~__long_mask);}
1294
1295 _LIBCPP_INLINE_VISIBILITY
1296 void __set_long_pointer(pointer __p) _NOEXCEPT
1297 {__r_.first().__l.__data_ = __p;}
1298 _LIBCPP_INLINE_VISIBILITY
1299 pointer __get_long_pointer() _NOEXCEPT
1300 {return __r_.first().__l.__data_;}
1301 _LIBCPP_INLINE_VISIBILITY
1302 const_pointer __get_long_pointer() const _NOEXCEPT
1303 {return __r_.first().__l.__data_;}
1304 _LIBCPP_INLINE_VISIBILITY
1305 pointer __get_short_pointer() _NOEXCEPT
1306 {return pointer_traits<pointer>::pointer_to(__r_.first().__s.__data_[0]);}
1307 _LIBCPP_INLINE_VISIBILITY
1308 const_pointer __get_short_pointer() const _NOEXCEPT
1309 {return pointer_traits<const_pointer>::pointer_to(__r_.first().__s.__data_[0]);}
1310 _LIBCPP_INLINE_VISIBILITY
1311 pointer __get_pointer() _NOEXCEPT
1312 {return __is_long() ? __get_long_pointer() : __get_short_pointer();}
1313 _LIBCPP_INLINE_VISIBILITY
1314 const_pointer __get_pointer() const _NOEXCEPT
1315 {return __is_long() ? __get_long_pointer() : __get_short_pointer();}
1316
1317 _LIBCPP_INLINE_VISIBILITY
1318 void __zero() _NOEXCEPT
1319 {
1320 size_type (&__a)[__n_words] = __r_.first().__r.__words;
1321 for (unsigned __i = 0; __i < __n_words; ++__i)
1322 __a[__i] = 0;
1323 }
1324
1325 template <size_type __a> static
1326 _LIBCPP_INLINE_VISIBILITY
1327 size_type __align_it(size_type __s) _NOEXCEPT
1328 {return (__s + (__a-1)) & ~(__a-1);}
1329 enum {__alignment = 16};
1330 static _LIBCPP_INLINE_VISIBILITY
1331 size_type __recommend(size_type __s) _NOEXCEPT
1332 {return (__s < __min_cap ? static_cast<size_type>(__min_cap) :
1333 __align_it<sizeof(value_type) < __alignment ?
1334 __alignment/sizeof(value_type) : 1 > (__s+1)) - 1;}
1335
1336 inline
1337 void __init(const value_type* __s, size_type __sz, size_type __reserve);
1338 inline
1339 void __init(const value_type* __s, size_type __sz);
1340 inline
1341 void __init(size_type __n, value_type __c);
1342
1343 template <class _InputIterator>
1344 inline
1345 typename enable_if
1346 <
1347 __is_exactly_input_iterator<_InputIterator>::value,
1348 void
1349 >::type
1350 __init(_InputIterator __first, _InputIterator __last);
1351
1352 template <class _ForwardIterator>
1353 inline
1354 typename enable_if
1355 <
1356 __is_forward_iterator<_ForwardIterator>::value,
1357 void
1358 >::type
1359 __init(_ForwardIterator __first, _ForwardIterator __last);
1360
1361 void __grow_by(size_type __old_cap, size_type __delta_cap, size_type __old_sz,
1362 size_type __n_copy, size_type __n_del, size_type __n_add = 0);
1363 void __grow_by_and_replace(size_type __old_cap, size_type __delta_cap, size_type __old_sz,
1364 size_type __n_copy, size_type __n_del,
1365 size_type __n_add, const value_type* __p_new_stuff);
1366
1367 _LIBCPP_INLINE_VISIBILITY
1368 void __erase_to_end(size_type __pos);
1369
1370 _LIBCPP_INLINE_VISIBILITY
1371 void __copy_assign_alloc(const basic_string& __str)
1372 {__copy_assign_alloc(__str, integral_constant<bool,
1373 __alloc_traits::propagate_on_container_copy_assignment::value>());}
1374
1375 _LIBCPP_INLINE_VISIBILITY
1376 void __copy_assign_alloc(const basic_string& __str, true_type)
1377 {
1378 if (__alloc() == __str.__alloc())
1379 __alloc() = __str.__alloc();
1380 else
1381 {
1382 if (!__str.__is_long())
1383 {
1384 clear();
1385 shrink_to_fit();
1386 __alloc() = __str.__alloc();
1387 }
1388 else
1389 {
1390 allocator_type __a = __str.__alloc();
1391 pointer __p = __alloc_traits::allocate(__a, __str.__get_long_cap());
1392 clear();
1393 shrink_to_fit();
1394 __alloc() = _VSTD::move(__a);
1395 __set_long_pointer(__p);
1396 __set_long_cap(__str.__get_long_cap());
1397 __set_long_size(__str.size());
1398 }
1399 }
1400 }
1401
1402 _LIBCPP_INLINE_VISIBILITY
1403 void __copy_assign_alloc(const basic_string&, false_type) _NOEXCEPT
1404 {}
1405
1406#ifndef _LIBCPP_CXX03_LANG
1407 _LIBCPP_INLINE_VISIBILITY
1408 void __move_assign(basic_string& __str, false_type)
1409 _NOEXCEPT_(__alloc_traits::is_always_equal::value);
1410 _LIBCPP_INLINE_VISIBILITY
1411 void __move_assign(basic_string& __str, true_type)
1412#if _LIBCPP_STD_VER > 14
1413 _NOEXCEPT;
1414#else
1415 _NOEXCEPT_(is_nothrow_move_assignable<allocator_type>::value);
1416#endif
1417#endif
1418
1419 _LIBCPP_INLINE_VISIBILITY
1420 void
1421 __move_assign_alloc(basic_string& __str)
1422 _NOEXCEPT_(
1423 !__alloc_traits::propagate_on_container_move_assignment::value ||
1424 is_nothrow_move_assignable<allocator_type>::value)
1425 {__move_assign_alloc(__str, integral_constant<bool,
1426 __alloc_traits::propagate_on_container_move_assignment::value>());}
1427
1428 _LIBCPP_INLINE_VISIBILITY
1429 void __move_assign_alloc(basic_string& __c, true_type)
1430 _NOEXCEPT_(is_nothrow_move_assignable<allocator_type>::value)
1431 {
1432 __alloc() = _VSTD::move(__c.__alloc());
1433 }
1434
1435 _LIBCPP_INLINE_VISIBILITY
1436 void __move_assign_alloc(basic_string&, false_type)
1437 _NOEXCEPT
1438 {}
1439
1440 _LIBCPP_INLINE_VISIBILITY void __invalidate_all_iterators();
1441 _LIBCPP_INLINE_VISIBILITY void __invalidate_iterators_past(size_type);
1442
1443 friend basic_string operator+<>(const basic_string&, const basic_string&);
1444 friend basic_string operator+<>(const value_type*, const basic_string&);
1445 friend basic_string operator+<>(value_type, const basic_string&);
1446 friend basic_string operator+<>(const basic_string&, const value_type*);
1447 friend basic_string operator+<>(const basic_string&, value_type);
1448};
1449
1450template <class _CharT, class _Traits, class _Allocator>
1451inline _LIBCPP_INLINE_VISIBILITY
1452void
1453basic_string<_CharT, _Traits, _Allocator>::__invalidate_all_iterators()
1454{
1455#if _LIBCPP_DEBUG_LEVEL >= 2
1456 __get_db()->__invalidate_all(this);
1457#endif // _LIBCPP_DEBUG_LEVEL >= 2
1458}
1459
1460template <class _CharT, class _Traits, class _Allocator>
1461inline _LIBCPP_INLINE_VISIBILITY
1462void
1463basic_string<_CharT, _Traits, _Allocator>::__invalidate_iterators_past(size_type
1464#if _LIBCPP_DEBUG_LEVEL >= 2
1465 __pos
1466#endif
1467 )
1468{
1469#if _LIBCPP_DEBUG_LEVEL >= 2
1470 __c_node* __c = __get_db()->__find_c_and_lock(this);
1471 if (__c)
1472 {
1473 const_pointer __new_last = __get_pointer() + __pos;
1474 for (__i_node** __p = __c->end_; __p != __c->beg_; )
1475 {
1476 --__p;
1477 const_iterator* __i = static_cast<const_iterator*>((*__p)->__i_);
1478 if (__i->base() > __new_last)
1479 {
1480 (*__p)->__c_ = nullptr;
1481 if (--__c->end_ != __p)
1482 memmove(__p, __p+1, (__c->end_ - __p)*sizeof(__i_node*));
1483 }
1484 }
1485 __get_db()->unlock();
1486 }
1487#endif // _LIBCPP_DEBUG_LEVEL >= 2
1488}
1489
1490template <class _CharT, class _Traits, class _Allocator>
1491inline _LIBCPP_INLINE_VISIBILITY
1492basic_string<_CharT, _Traits, _Allocator>::basic_string()
1493 _NOEXCEPT_(is_nothrow_default_constructible<allocator_type>::value)
1494{
1495#if _LIBCPP_DEBUG_LEVEL >= 2
1496 __get_db()->__insert_c(this);
1497#endif
1498 __zero();
1499}
1500
1501template <class _CharT, class _Traits, class _Allocator>
1502inline _LIBCPP_INLINE_VISIBILITY
1503basic_string<_CharT, _Traits, _Allocator>::basic_string(const allocator_type& __a)
1504#if _LIBCPP_STD_VER <= 14
1505 _NOEXCEPT_(is_nothrow_copy_constructible<allocator_type>::value)
1506#else
1507 _NOEXCEPT
1508#endif
1509: __r_(__second_tag(), __a)
1510{
1511#if _LIBCPP_DEBUG_LEVEL >= 2
1512 __get_db()->__insert_c(this);
1513#endif
1514 __zero();
1515}
1516
1517template <class _CharT, class _Traits, class _Allocator>
1518void basic_string<_CharT, _Traits, _Allocator>::__init(const value_type* __s,
1519 size_type __sz,
1520 size_type __reserve)
1521{
1522 if (__reserve > max_size())
1523 this->__throw_length_error();
1524 pointer __p;
1525 if (__reserve < __min_cap)
1526 {
1527 __set_short_size(__sz);
1528 __p = __get_short_pointer();
1529 }
1530 else
1531 {
1532 size_type __cap = __recommend(__reserve);
1533 __p = __alloc_traits::allocate(__alloc(), __cap+1);
1534 __set_long_pointer(__p);
1535 __set_long_cap(__cap+1);
1536 __set_long_size(__sz);
1537 }
1538 traits_type::copy(_VSTD::__to_raw_pointer(__p), __s, __sz);
1539 traits_type::assign(__p[__sz], value_type());
1540}
1541
1542template <class _CharT, class _Traits, class _Allocator>
1543void
1544basic_string<_CharT, _Traits, _Allocator>::__init(const value_type* __s, size_type __sz)
1545{
1546 if (__sz > max_size())
1547 this->__throw_length_error();
1548 pointer __p;
1549 if (__sz < __min_cap)
1550 {
1551 __set_short_size(__sz);
1552 __p = __get_short_pointer();
1553 }
1554 else
1555 {
1556 size_type __cap = __recommend(__sz);
1557 __p = __alloc_traits::allocate(__alloc(), __cap+1);
1558 __set_long_pointer(__p);
1559 __set_long_cap(__cap+1);
1560 __set_long_size(__sz);
1561 }
1562 traits_type::copy(_VSTD::__to_raw_pointer(__p), __s, __sz);
1563 traits_type::assign(__p[__sz], value_type());
1564}
1565
1566template <class _CharT, class _Traits, class _Allocator>
1567inline _LIBCPP_INLINE_VISIBILITY
1568basic_string<_CharT, _Traits, _Allocator>::basic_string(const _CharT* __s)
1569{
1570 _LIBCPP_ASSERT(__s != nullptr, "basic_string(const char*) detected nullptr");
1571 __init(__s, traits_type::length(__s));
1572#if _LIBCPP_DEBUG_LEVEL >= 2
1573 __get_db()->__insert_c(this);
1574#endif
1575}
1576
1577template <class _CharT, class _Traits, class _Allocator>
1578inline _LIBCPP_INLINE_VISIBILITY
1579basic_string<_CharT, _Traits, _Allocator>::basic_string(const _CharT* __s, const _Allocator& __a)
1580 : __r_(__second_tag(), __a)
1581{
1582 _LIBCPP_ASSERT(__s != nullptr, "basic_string(const char*, allocator) detected nullptr");
1583 __init(__s, traits_type::length(__s));
1584#if _LIBCPP_DEBUG_LEVEL >= 2
1585 __get_db()->__insert_c(this);
1586#endif
1587}
1588
1589template <class _CharT, class _Traits, class _Allocator>
1590inline _LIBCPP_INLINE_VISIBILITY
1591basic_string<_CharT, _Traits, _Allocator>::basic_string(const _CharT* __s, size_type __n)
1592{
1593 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "basic_string(const char*, n) detected nullptr");
1594 __init(__s, __n);
1595#if _LIBCPP_DEBUG_LEVEL >= 2
1596 __get_db()->__insert_c(this);
1597#endif
1598}
1599
1600template <class _CharT, class _Traits, class _Allocator>
1601inline _LIBCPP_INLINE_VISIBILITY
1602basic_string<_CharT, _Traits, _Allocator>::basic_string(const _CharT* __s, size_type __n, const _Allocator& __a)
1603 : __r_(__second_tag(), __a)
1604{
1605 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "basic_string(const char*, n, allocator) detected nullptr");
1606 __init(__s, __n);
1607#if _LIBCPP_DEBUG_LEVEL >= 2
1608 __get_db()->__insert_c(this);
1609#endif
1610}
1611
1612template <class _CharT, class _Traits, class _Allocator>
1613basic_string<_CharT, _Traits, _Allocator>::basic_string(const basic_string& __str)
1614 : __r_(__second_tag(), __alloc_traits::select_on_container_copy_construction(__str.__alloc()))
1615{
1616 if (!__str.__is_long())
1617 __r_.first().__r = __str.__r_.first().__r;
1618 else
1619 __init(_VSTD::__to_raw_pointer(__str.__get_long_pointer()), __str.__get_long_size());
1620#if _LIBCPP_DEBUG_LEVEL >= 2
1621 __get_db()->__insert_c(this);
1622#endif
1623}
1624
1625template <class _CharT, class _Traits, class _Allocator>
1626basic_string<_CharT, _Traits, _Allocator>::basic_string(
1627 const basic_string& __str, const allocator_type& __a)
1628 : __r_(__second_tag(), __a)
1629{
1630 if (!__str.__is_long())
1631 __r_.first().__r = __str.__r_.first().__r;
1632 else
1633 __init(_VSTD::__to_raw_pointer(__str.__get_long_pointer()), __str.__get_long_size());
1634#if _LIBCPP_DEBUG_LEVEL >= 2
1635 __get_db()->__insert_c(this);
1636#endif
1637}
1638
1639#ifndef _LIBCPP_CXX03_LANG
1640
1641template <class _CharT, class _Traits, class _Allocator>
1642inline _LIBCPP_INLINE_VISIBILITY
1643basic_string<_CharT, _Traits, _Allocator>::basic_string(basic_string&& __str)
1644#if _LIBCPP_STD_VER <= 14
1645 _NOEXCEPT_(is_nothrow_move_constructible<allocator_type>::value)
1646#else
1647 _NOEXCEPT
1648#endif
1649 : __r_(_VSTD::move(__str.__r_))
1650{
1651 __str.__zero();
1652#if _LIBCPP_DEBUG_LEVEL >= 2
1653 __get_db()->__insert_c(this);
1654 if (__is_long())
1655 __get_db()->swap(this, &__str);
1656#endif
1657}
1658
1659template <class _CharT, class _Traits, class _Allocator>
1660inline _LIBCPP_INLINE_VISIBILITY
1661basic_string<_CharT, _Traits, _Allocator>::basic_string(basic_string&& __str, const allocator_type& __a)
1662 : __r_(__second_tag(), __a)
1663{
1664 if (__str.__is_long() && __a != __str.__alloc()) // copy, not move
1665 __init(_VSTD::__to_raw_pointer(__str.__get_long_pointer()), __str.__get_long_size());
1666 else
1667 {
1668 __r_.first().__r = __str.__r_.first().__r;
1669 __str.__zero();
1670 }
1671#if _LIBCPP_DEBUG_LEVEL >= 2
1672 __get_db()->__insert_c(this);
1673 if (__is_long())
1674 __get_db()->swap(this, &__str);
1675#endif
1676}
1677
1678#endif // _LIBCPP_CXX03_LANG
1679
1680template <class _CharT, class _Traits, class _Allocator>
1681void
1682basic_string<_CharT, _Traits, _Allocator>::__init(size_type __n, value_type __c)
1683{
1684 if (__n > max_size())
1685 this->__throw_length_error();
1686 pointer __p;
1687 if (__n < __min_cap)
1688 {
1689 __set_short_size(__n);
1690 __p = __get_short_pointer();
1691 }
1692 else
1693 {
1694 size_type __cap = __recommend(__n);
1695 __p = __alloc_traits::allocate(__alloc(), __cap+1);
1696 __set_long_pointer(__p);
1697 __set_long_cap(__cap+1);
1698 __set_long_size(__n);
1699 }
1700 traits_type::assign(_VSTD::__to_raw_pointer(__p), __n, __c);
1701 traits_type::assign(__p[__n], value_type());
1702}
1703
1704template <class _CharT, class _Traits, class _Allocator>
1705inline _LIBCPP_INLINE_VISIBILITY
1706basic_string<_CharT, _Traits, _Allocator>::basic_string(size_type __n, _CharT __c)
1707{
1708 __init(__n, __c);
1709#if _LIBCPP_DEBUG_LEVEL >= 2
1710 __get_db()->__insert_c(this);
1711#endif
1712}
1713
1714template <class _CharT, class _Traits, class _Allocator>
1715inline _LIBCPP_INLINE_VISIBILITY
1716basic_string<_CharT, _Traits, _Allocator>::basic_string(size_type __n, _CharT __c, const _Allocator& __a)
1717 : __r_(__second_tag(), __a)
1718{
1719 __init(__n, __c);
1720#if _LIBCPP_DEBUG_LEVEL >= 2
1721 __get_db()->__insert_c(this);
1722#endif
1723}
1724
1725template <class _CharT, class _Traits, class _Allocator>
1726basic_string<_CharT, _Traits, _Allocator>::basic_string(const basic_string& __str,
1727 size_type __pos, size_type __n,
1728 const _Allocator& __a)
1729 : __r_(__second_tag(), __a)
1730{
1731 size_type __str_sz = __str.size();
1732 if (__pos > __str_sz)
1733 this->__throw_out_of_range();
1734 __init(__str.data() + __pos, _VSTD::min(__n, __str_sz - __pos));
1735#if _LIBCPP_DEBUG_LEVEL >= 2
1736 __get_db()->__insert_c(this);
1737#endif
1738}
1739
1740template <class _CharT, class _Traits, class _Allocator>
1741inline _LIBCPP_INLINE_VISIBILITY
1742basic_string<_CharT, _Traits, _Allocator>::basic_string(const basic_string& __str, size_type __pos,
1743 const _Allocator& __a)
1744 : __r_(__second_tag(), __a)
1745{
1746 size_type __str_sz = __str.size();
1747 if (__pos > __str_sz)
1748 this->__throw_out_of_range();
1749 __init(__str.data() + __pos, __str_sz - __pos);
1750#if _LIBCPP_DEBUG_LEVEL >= 2
1751 __get_db()->__insert_c(this);
1752#endif
1753}
1754
1755template <class _CharT, class _Traits, class _Allocator>
1756template <class _Tp>
1757basic_string<_CharT, _Traits, _Allocator>::basic_string(
1758 const _Tp& __t, size_type __pos, size_type __n, const allocator_type& __a,
1759 typename enable_if<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, void>::type *)
1760 : __r_(__second_tag(), __a)
1761{
1762 __self_view __sv = __self_view(__t).substr(__pos, __n);
1763 __init(__sv.data(), __sv.size());
1764#if _LIBCPP_DEBUG_LEVEL >= 2
1765 __get_db()->__insert_c(this);
1766#endif
1767}
1768
1769template <class _CharT, class _Traits, class _Allocator>
1770inline _LIBCPP_INLINE_VISIBILITY
1771basic_string<_CharT, _Traits, _Allocator>::basic_string(__self_view __sv)
1772{
1773 __init(__sv.data(), __sv.size());
1774#if _LIBCPP_DEBUG_LEVEL >= 2
1775 __get_db()->__insert_c(this);
1776#endif
1777}
1778
1779template <class _CharT, class _Traits, class _Allocator>
1780inline _LIBCPP_INLINE_VISIBILITY
1781basic_string<_CharT, _Traits, _Allocator>::basic_string(__self_view __sv, const _Allocator& __a)
1782 : __r_(__second_tag(), __a)
1783{
1784 __init(__sv.data(), __sv.size());
1785#if _LIBCPP_DEBUG_LEVEL >= 2
1786 __get_db()->__insert_c(this);
1787#endif
1788}
1789
1790template <class _CharT, class _Traits, class _Allocator>
1791template <class _InputIterator>
1792typename enable_if
1793<
1794 __is_exactly_input_iterator<_InputIterator>::value,
1795 void
1796>::type
1797basic_string<_CharT, _Traits, _Allocator>::__init(_InputIterator __first, _InputIterator __last)
1798{
1799 __zero();
1800#ifndef _LIBCPP_NO_EXCEPTIONS
1801 try
1802 {
1803#endif // _LIBCPP_NO_EXCEPTIONS
1804 for (; __first != __last; ++__first)
1805 push_back(*__first);
1806#ifndef _LIBCPP_NO_EXCEPTIONS
1807 }
1808 catch (...)
1809 {
1810 if (__is_long())
1811 __alloc_traits::deallocate(__alloc(), __get_long_pointer(), __get_long_cap());
1812 throw;
1813 }
1814#endif // _LIBCPP_NO_EXCEPTIONS
1815}
1816
1817template <class _CharT, class _Traits, class _Allocator>
1818template <class _ForwardIterator>
1819typename enable_if
1820<
1821 __is_forward_iterator<_ForwardIterator>::value,
1822 void
1823>::type
1824basic_string<_CharT, _Traits, _Allocator>::__init(_ForwardIterator __first, _ForwardIterator __last)
1825{
1826 size_type __sz = static_cast<size_type>(_VSTD::distance(__first, __last));
1827 if (__sz > max_size())
1828 this->__throw_length_error();
1829 pointer __p;
1830 if (__sz < __min_cap)
1831 {
1832 __set_short_size(__sz);
1833 __p = __get_short_pointer();
1834 }
1835 else
1836 {
1837 size_type __cap = __recommend(__sz);
1838 __p = __alloc_traits::allocate(__alloc(), __cap+1);
1839 __set_long_pointer(__p);
1840 __set_long_cap(__cap+1);
1841 __set_long_size(__sz);
1842 }
1843 for (; __first != __last; ++__first, (void) ++__p)
1844 traits_type::assign(*__p, *__first);
1845 traits_type::assign(*__p, value_type());
1846}
1847
1848template <class _CharT, class _Traits, class _Allocator>
1849template<class _InputIterator>
1850inline _LIBCPP_INLINE_VISIBILITY
1851basic_string<_CharT, _Traits, _Allocator>::basic_string(_InputIterator __first, _InputIterator __last)
1852{
1853 __init(__first, __last);
1854#if _LIBCPP_DEBUG_LEVEL >= 2
1855 __get_db()->__insert_c(this);
1856#endif
1857}
1858
1859template <class _CharT, class _Traits, class _Allocator>
1860template<class _InputIterator>
1861inline _LIBCPP_INLINE_VISIBILITY
1862basic_string<_CharT, _Traits, _Allocator>::basic_string(_InputIterator __first, _InputIterator __last,
1863 const allocator_type& __a)
1864 : __r_(__second_tag(), __a)
1865{
1866 __init(__first, __last);
1867#if _LIBCPP_DEBUG_LEVEL >= 2
1868 __get_db()->__insert_c(this);
1869#endif
1870}
1871
1872#ifndef _LIBCPP_CXX03_LANG
1873
1874template <class _CharT, class _Traits, class _Allocator>
1875inline _LIBCPP_INLINE_VISIBILITY
1876basic_string<_CharT, _Traits, _Allocator>::basic_string(
1877 initializer_list<_CharT> __il)
1878{
1879 __init(__il.begin(), __il.end());
1880#if _LIBCPP_DEBUG_LEVEL >= 2
1881 __get_db()->__insert_c(this);
1882#endif
1883}
1884
1885template <class _CharT, class _Traits, class _Allocator>
1886inline _LIBCPP_INLINE_VISIBILITY
1887
1888basic_string<_CharT, _Traits, _Allocator>::basic_string(
1889 initializer_list<_CharT> __il, const _Allocator& __a)
1890 : __r_(__second_tag(), __a)
1891{
1892 __init(__il.begin(), __il.end());
1893#if _LIBCPP_DEBUG_LEVEL >= 2
1894 __get_db()->__insert_c(this);
1895#endif
1896}
1897
1898#endif // _LIBCPP_CXX03_LANG
1899
1900template <class _CharT, class _Traits, class _Allocator>
1901basic_string<_CharT, _Traits, _Allocator>::~basic_string()
1902{
1903#if _LIBCPP_DEBUG_LEVEL >= 2
1904 __get_db()->__erase_c(this);
1905#endif
1906 if (__is_long())
1907 __alloc_traits::deallocate(__alloc(), __get_long_pointer(), __get_long_cap());
1908}
1909
1910template <class _CharT, class _Traits, class _Allocator>
1911void
1912basic_string<_CharT, _Traits, _Allocator>::__grow_by_and_replace
1913 (size_type __old_cap, size_type __delta_cap, size_type __old_sz,
1914 size_type __n_copy, size_type __n_del, size_type __n_add, const value_type* __p_new_stuff)
1915{
1916 size_type __ms = max_size();
1917 if (__delta_cap > __ms - __old_cap - 1)
1918 this->__throw_length_error();
1919 pointer __old_p = __get_pointer();
1920 size_type __cap = __old_cap < __ms / 2 - __alignment ?
1921 __recommend(_VSTD::max(__old_cap + __delta_cap, 2 * __old_cap)) :
1922 __ms - 1;
1923 pointer __p = __alloc_traits::allocate(__alloc(), __cap+1);
1924 __invalidate_all_iterators();
1925 if (__n_copy != 0)
1926 traits_type::copy(_VSTD::__to_raw_pointer(__p),
1927 _VSTD::__to_raw_pointer(__old_p), __n_copy);
1928 if (__n_add != 0)
1929 traits_type::copy(_VSTD::__to_raw_pointer(__p) + __n_copy, __p_new_stuff, __n_add);
1930 size_type __sec_cp_sz = __old_sz - __n_del - __n_copy;
1931 if (__sec_cp_sz != 0)
1932 traits_type::copy(_VSTD::__to_raw_pointer(__p) + __n_copy + __n_add,
1933 _VSTD::__to_raw_pointer(__old_p) + __n_copy + __n_del, __sec_cp_sz);
1934 if (__old_cap+1 != __min_cap)
1935 __alloc_traits::deallocate(__alloc(), __old_p, __old_cap+1);
1936 __set_long_pointer(__p);
1937 __set_long_cap(__cap+1);
1938 __old_sz = __n_copy + __n_add + __sec_cp_sz;
1939 __set_long_size(__old_sz);
1940 traits_type::assign(__p[__old_sz], value_type());
1941}
1942
1943template <class _CharT, class _Traits, class _Allocator>
1944void
1945basic_string<_CharT, _Traits, _Allocator>::__grow_by(size_type __old_cap, size_type __delta_cap, size_type __old_sz,
1946 size_type __n_copy, size_type __n_del, size_type __n_add)
1947{
1948 size_type __ms = max_size();
1949 if (__delta_cap > __ms - __old_cap)
1950 this->__throw_length_error();
1951 pointer __old_p = __get_pointer();
1952 size_type __cap = __old_cap < __ms / 2 - __alignment ?
1953 __recommend(_VSTD::max(__old_cap + __delta_cap, 2 * __old_cap)) :
1954 __ms - 1;
1955 pointer __p = __alloc_traits::allocate(__alloc(), __cap+1);
1956 __invalidate_all_iterators();
1957 if (__n_copy != 0)
1958 traits_type::copy(_VSTD::__to_raw_pointer(__p),
1959 _VSTD::__to_raw_pointer(__old_p), __n_copy);
1960 size_type __sec_cp_sz = __old_sz - __n_del - __n_copy;
1961 if (__sec_cp_sz != 0)
1962 traits_type::copy(_VSTD::__to_raw_pointer(__p) + __n_copy + __n_add,
1963 _VSTD::__to_raw_pointer(__old_p) + __n_copy + __n_del,
1964 __sec_cp_sz);
1965 if (__old_cap+1 != __min_cap)
1966 __alloc_traits::deallocate(__alloc(), __old_p, __old_cap+1);
1967 __set_long_pointer(__p);
1968 __set_long_cap(__cap+1);
1969}
1970
1971// assign
1972
1973template <class _CharT, class _Traits, class _Allocator>
1974basic_string<_CharT, _Traits, _Allocator>&
1975basic_string<_CharT, _Traits, _Allocator>::assign(const value_type* __s, size_type __n)
1976{
1977 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::assign received nullptr");
1978 size_type __cap = capacity();
1979 if (__cap >= __n)
1980 {
1981 value_type* __p = _VSTD::__to_raw_pointer(__get_pointer());
1982 traits_type::move(__p, __s, __n);
1983 traits_type::assign(__p[__n], value_type());
1984 __set_size(__n);
1985 __invalidate_iterators_past(__n);
1986 }
1987 else
1988 {
1989 size_type __sz = size();
1990 __grow_by_and_replace(__cap, __n - __cap, __sz, 0, __sz, __n, __s);
1991 }
1992 return *this;
1993}
1994
1995template <class _CharT, class _Traits, class _Allocator>
1996basic_string<_CharT, _Traits, _Allocator>&
1997basic_string<_CharT, _Traits, _Allocator>::assign(size_type __n, value_type __c)
1998{
1999 size_type __cap = capacity();
2000 if (__cap < __n)
2001 {
2002 size_type __sz = size();
2003 __grow_by(__cap, __n - __cap, __sz, 0, __sz);
2004 }
2005 else
2006 __invalidate_iterators_past(__n);
2007 value_type* __p = _VSTD::__to_raw_pointer(__get_pointer());
2008 traits_type::assign(__p, __n, __c);
2009 traits_type::assign(__p[__n], value_type());
2010 __set_size(__n);
2011 return *this;
2012}
2013
2014template <class _CharT, class _Traits, class _Allocator>
2015basic_string<_CharT, _Traits, _Allocator>&
2016basic_string<_CharT, _Traits, _Allocator>::operator=(value_type __c)
2017{
2018 pointer __p;
2019 if (__is_long())
2020 {
2021 __p = __get_long_pointer();
2022 __set_long_size(1);
2023 }
2024 else
2025 {
2026 __p = __get_short_pointer();
2027 __set_short_size(1);
2028 }
2029 traits_type::assign(*__p, __c);
2030 traits_type::assign(*++__p, value_type());
2031 __invalidate_iterators_past(1);
2032 return *this;
2033}
2034
2035template <class _CharT, class _Traits, class _Allocator>
2036basic_string<_CharT, _Traits, _Allocator>&
2037basic_string<_CharT, _Traits, _Allocator>::operator=(const basic_string& __str)
2038{
2039 if (this != &__str)
2040 {
2041 __copy_assign_alloc(__str);
2042 assign(__str.data(), __str.size());
2043 }
2044 return *this;
2045}
2046
2047#ifndef _LIBCPP_CXX03_LANG
2048
2049template <class _CharT, class _Traits, class _Allocator>
2050inline _LIBCPP_INLINE_VISIBILITY
2051void
2052basic_string<_CharT, _Traits, _Allocator>::__move_assign(basic_string& __str, false_type)
2053 _NOEXCEPT_(__alloc_traits::is_always_equal::value)
2054{
2055 if (__alloc() != __str.__alloc())
2056 assign(__str);
2057 else
2058 __move_assign(__str, true_type());
2059}
2060
2061template <class _CharT, class _Traits, class _Allocator>
2062inline _LIBCPP_INLINE_VISIBILITY
2063void
2064basic_string<_CharT, _Traits, _Allocator>::__move_assign(basic_string& __str, true_type)
2065#if _LIBCPP_STD_VER > 14
2066 _NOEXCEPT
2067#else
2068 _NOEXCEPT_(is_nothrow_move_assignable<allocator_type>::value)
2069#endif
2070{
2071 clear();
2072 shrink_to_fit();
2073 __r_.first() = __str.__r_.first();
2074 __move_assign_alloc(__str);
2075 __str.__zero();
2076}
2077
2078template <class _CharT, class _Traits, class _Allocator>
2079inline _LIBCPP_INLINE_VISIBILITY
2080basic_string<_CharT, _Traits, _Allocator>&
2081basic_string<_CharT, _Traits, _Allocator>::operator=(basic_string&& __str)
2082 _NOEXCEPT_((__noexcept_move_assign_container<_Allocator, __alloc_traits>::value))
2083{
2084 __move_assign(__str, integral_constant<bool,
2085 __alloc_traits::propagate_on_container_move_assignment::value>());
2086 return *this;
2087}
2088
2089#endif
2090
2091template <class _CharT, class _Traits, class _Allocator>
2092template<class _InputIterator>
2093typename enable_if
2094<
2095 __is_exactly_input_iterator <_InputIterator>::value
2096 || !__libcpp_string_gets_noexcept_iterator<_InputIterator>::value,
2097 basic_string<_CharT, _Traits, _Allocator>&
2098>::type
2099basic_string<_CharT, _Traits, _Allocator>::assign(_InputIterator __first, _InputIterator __last)
2100{
2101 const basic_string __temp(__first, __last, __alloc());
2102 assign(__temp.data(), __temp.size());
2103 return *this;
2104}
2105
2106template <class _CharT, class _Traits, class _Allocator>
2107template<class _ForwardIterator>
2108typename enable_if
2109<
2110 __is_forward_iterator<_ForwardIterator>::value
2111 && __libcpp_string_gets_noexcept_iterator<_ForwardIterator>::value,
2112 basic_string<_CharT, _Traits, _Allocator>&
2113>::type
2114basic_string<_CharT, _Traits, _Allocator>::assign(_ForwardIterator __first, _ForwardIterator __last)
2115{
2116 size_type __n = static_cast<size_type>(_VSTD::distance(__first, __last));
2117 size_type __cap = capacity();
2118 if (__cap < __n)
2119 {
2120 size_type __sz = size();
2121 __grow_by(__cap, __n - __cap, __sz, 0, __sz);
2122 }
2123 else
2124 __invalidate_iterators_past(__n);
2125 pointer __p = __get_pointer();
2126 for (; __first != __last; ++__first, ++__p)
2127 traits_type::assign(*__p, *__first);
2128 traits_type::assign(*__p, value_type());
2129 __set_size(__n);
2130 return *this;
2131}
2132
2133template <class _CharT, class _Traits, class _Allocator>
2134basic_string<_CharT, _Traits, _Allocator>&
2135basic_string<_CharT, _Traits, _Allocator>::assign(const basic_string& __str, size_type __pos, size_type __n)
2136{
2137 size_type __sz = __str.size();
2138 if (__pos > __sz)
2139 this->__throw_out_of_range();
2140 return assign(__str.data() + __pos, _VSTD::min(__n, __sz - __pos));
2141}
2142
2143template <class _CharT, class _Traits, class _Allocator>
2144template <class _Tp>
2145typename enable_if
2146<
2147 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value,
2148 basic_string<_CharT, _Traits, _Allocator>&
2149>::type
2150basic_string<_CharT, _Traits, _Allocator>::assign(const _Tp & __t, size_type __pos, size_type __n)
2151{
2152 __self_view __sv = __t;
2153 size_type __sz = __sv.size();
2154 if (__pos > __sz)
2155 this->__throw_out_of_range();
2156 return assign(__sv.data() + __pos, _VSTD::min(__n, __sz - __pos));
2157}
2158
2159
2160template <class _CharT, class _Traits, class _Allocator>
2161basic_string<_CharT, _Traits, _Allocator>&
2162basic_string<_CharT, _Traits, _Allocator>::assign(const value_type* __s)
2163{
2164 _LIBCPP_ASSERT(__s != nullptr, "string::assign received nullptr");
2165 return assign(__s, traits_type::length(__s));
2166}
2167
2168// append
2169
2170template <class _CharT, class _Traits, class _Allocator>
2171basic_string<_CharT, _Traits, _Allocator>&
2172basic_string<_CharT, _Traits, _Allocator>::append(const value_type* __s, size_type __n)
2173{
2174 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::append received nullptr");
2175 size_type __cap = capacity();
2176 size_type __sz = size();
2177 if (__cap - __sz >= __n)
2178 {
2179 if (__n)
2180 {
2181 value_type* __p = _VSTD::__to_raw_pointer(__get_pointer());
2182 traits_type::copy(__p + __sz, __s, __n);
2183 __sz += __n;
2184 __set_size(__sz);
2185 traits_type::assign(__p[__sz], value_type());
2186 }
2187 }
2188 else
2189 __grow_by_and_replace(__cap, __sz + __n - __cap, __sz, __sz, 0, __n, __s);
2190 return *this;
2191}
2192
2193template <class _CharT, class _Traits, class _Allocator>
2194basic_string<_CharT, _Traits, _Allocator>&
2195basic_string<_CharT, _Traits, _Allocator>::append(size_type __n, value_type __c)
2196{
2197 if (__n)
2198 {
2199 size_type __cap = capacity();
2200 size_type __sz = size();
2201 if (__cap - __sz < __n)
2202 __grow_by(__cap, __sz + __n - __cap, __sz, __sz, 0);
2203 pointer __p = __get_pointer();
2204 traits_type::assign(_VSTD::__to_raw_pointer(__p) + __sz, __n, __c);
2205 __sz += __n;
2206 __set_size(__sz);
2207 traits_type::assign(__p[__sz], value_type());
2208 }
2209 return *this;
2210}
2211
2212template <class _CharT, class _Traits, class _Allocator>
2213void
2214basic_string<_CharT, _Traits, _Allocator>::push_back(value_type __c)
2215{
2216 bool __is_short = !__is_long();
2217 size_type __cap;
2218 size_type __sz;
2219 if (__is_short)
2220 {
2221 __cap = __min_cap - 1;
2222 __sz = __get_short_size();
2223 }
2224 else
2225 {
2226 __cap = __get_long_cap() - 1;
2227 __sz = __get_long_size();
2228 }
2229 if (__sz == __cap)
2230 {
2231 __grow_by(__cap, 1, __sz, __sz, 0);
2232 __is_short = !__is_long();
2233 }
2234 pointer __p;
2235 if (__is_short)
2236 {
2237 __p = __get_short_pointer() + __sz;
2238 __set_short_size(__sz+1);
2239 }
2240 else
2241 {
2242 __p = __get_long_pointer() + __sz;
2243 __set_long_size(__sz+1);
2244 }
2245 traits_type::assign(*__p, __c);
2246 traits_type::assign(*++__p, value_type());
2247}
2248
2249template <class _Tp>
2250bool __ptr_in_range (const _Tp* __p, const _Tp* __first, const _Tp* __last)
2251{
2252 return __first <= __p && __p < __last;
2253}
2254
2255template <class _Tp1, class _Tp2>
2256bool __ptr_in_range (const _Tp1*, const _Tp2*, const _Tp2*)
2257{
2258 return false;
2259}
2260
2261template <class _CharT, class _Traits, class _Allocator>
2262template<class _ForwardIterator>
2263basic_string<_CharT, _Traits, _Allocator>&
2264basic_string<_CharT, _Traits, _Allocator>::__append_forward_unsafe(
2265 _ForwardIterator __first, _ForwardIterator __last)
2266{
2267 static_assert(__is_forward_iterator<_ForwardIterator>::value,
2268 "function requires a ForwardIterator");
2269 size_type __sz = size();
2270 size_type __cap = capacity();
2271 size_type __n = static_cast<size_type>(_VSTD::distance(__first, __last));
2272 if (__n)
2273 {
2274 typedef typename iterator_traits<_ForwardIterator>::reference _CharRef;
2275 _CharRef __tmp_ref = *__first;
2276 if (__ptr_in_range(_VSTD::addressof(__tmp_ref), data(), data() + size()))
2277 {
2278 const basic_string __temp (__first, __last, __alloc());
2279 append(__temp.data(), __temp.size());
2280 }
2281 else
2282 {
2283 if (__cap - __sz < __n)
2284 __grow_by(__cap, __sz + __n - __cap, __sz, __sz, 0);
2285 pointer __p = __get_pointer() + __sz;
2286 for (; __first != __last; ++__p, ++__first)
2287 traits_type::assign(*__p, *__first);
2288 traits_type::assign(*__p, value_type());
2289 __set_size(__sz + __n);
2290 }
2291 }
2292 return *this;
2293}
2294
2295template <class _CharT, class _Traits, class _Allocator>
2296inline _LIBCPP_INLINE_VISIBILITY
2297basic_string<_CharT, _Traits, _Allocator>&
2298basic_string<_CharT, _Traits, _Allocator>::append(const basic_string& __str)
2299{
2300 return append(__str.data(), __str.size());
2301}
2302
2303template <class _CharT, class _Traits, class _Allocator>
2304basic_string<_CharT, _Traits, _Allocator>&
2305basic_string<_CharT, _Traits, _Allocator>::append(const basic_string& __str, size_type __pos, size_type __n)
2306{
2307 size_type __sz = __str.size();
2308 if (__pos > __sz)
2309 this->__throw_out_of_range();
2310 return append(__str.data() + __pos, _VSTD::min(__n, __sz - __pos));
2311}
2312
2313template <class _CharT, class _Traits, class _Allocator>
2314template <class _Tp>
2315 typename enable_if
2316 <
2317 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value,
2318 basic_string<_CharT, _Traits, _Allocator>&
2319 >::type
2320basic_string<_CharT, _Traits, _Allocator>::append(const _Tp & __t, size_type __pos, size_type __n)
2321{
2322 __self_view __sv = __t;
2323 size_type __sz = __sv.size();
2324 if (__pos > __sz)
2325 this->__throw_out_of_range();
2326 return append(__sv.data() + __pos, _VSTD::min(__n, __sz - __pos));
2327}
2328
2329template <class _CharT, class _Traits, class _Allocator>
2330basic_string<_CharT, _Traits, _Allocator>&
2331basic_string<_CharT, _Traits, _Allocator>::append(const value_type* __s)
2332{
2333 _LIBCPP_ASSERT(__s != nullptr, "string::append received nullptr");
2334 return append(__s, traits_type::length(__s));
2335}
2336
2337// insert
2338
2339template <class _CharT, class _Traits, class _Allocator>
2340basic_string<_CharT, _Traits, _Allocator>&
2341basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos, const value_type* __s, size_type __n)
2342{
2343 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::insert received nullptr");
2344 size_type __sz = size();
2345 if (__pos > __sz)
2346 this->__throw_out_of_range();
2347 size_type __cap = capacity();
2348 if (__cap - __sz >= __n)
2349 {
2350 if (__n)
2351 {
2352 value_type* __p = _VSTD::__to_raw_pointer(__get_pointer());
2353 size_type __n_move = __sz - __pos;
2354 if (__n_move != 0)
2355 {
2356 if (__p + __pos <= __s && __s < __p + __sz)
2357 __s += __n;
2358 traits_type::move(__p + __pos + __n, __p + __pos, __n_move);
2359 }
2360 traits_type::move(__p + __pos, __s, __n);
2361 __sz += __n;
2362 __set_size(__sz);
2363 traits_type::assign(__p[__sz], value_type());
2364 }
2365 }
2366 else
2367 __grow_by_and_replace(__cap, __sz + __n - __cap, __sz, __pos, 0, __n, __s);
2368 return *this;
2369}
2370
2371template <class _CharT, class _Traits, class _Allocator>
2372basic_string<_CharT, _Traits, _Allocator>&
2373basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos, size_type __n, value_type __c)
2374{
2375 size_type __sz = size();
2376 if (__pos > __sz)
2377 this->__throw_out_of_range();
2378 if (__n)
2379 {
2380 size_type __cap = capacity();
2381 value_type* __p;
2382 if (__cap - __sz >= __n)
2383 {
2384 __p = _VSTD::__to_raw_pointer(__get_pointer());
2385 size_type __n_move = __sz - __pos;
2386 if (__n_move != 0)
2387 traits_type::move(__p + __pos + __n, __p + __pos, __n_move);
2388 }
2389 else
2390 {
2391 __grow_by(__cap, __sz + __n - __cap, __sz, __pos, 0, __n);
2392 __p = _VSTD::__to_raw_pointer(__get_long_pointer());
2393 }
2394 traits_type::assign(__p + __pos, __n, __c);
2395 __sz += __n;
2396 __set_size(__sz);
2397 traits_type::assign(__p[__sz], value_type());
2398 }
2399 return *this;
2400}
2401
2402template <class _CharT, class _Traits, class _Allocator>
2403template<class _InputIterator>
2404typename enable_if
2405<
2406 __is_exactly_input_iterator<_InputIterator>::value
2407 || !__libcpp_string_gets_noexcept_iterator<_InputIterator>::value,
2408 typename basic_string<_CharT, _Traits, _Allocator>::iterator
2409>::type
2410basic_string<_CharT, _Traits, _Allocator>::insert(const_iterator __pos, _InputIterator __first, _InputIterator __last)
2411{
2412#if _LIBCPP_DEBUG_LEVEL >= 2
2413 _LIBCPP_ASSERT(__get_const_db()->__find_c_from_i(&__pos) == this,
2414 "string::insert(iterator, range) called with an iterator not"
2415 " referring to this string");
2416#endif
2417 const basic_string __temp(__first, __last, __alloc());
2418 return insert(__pos, __temp.data(), __temp.data() + __temp.size());
2419}
2420
2421template <class _CharT, class _Traits, class _Allocator>
2422template<class _ForwardIterator>
2423typename enable_if
2424<
2425 __is_forward_iterator<_ForwardIterator>::value
2426 && __libcpp_string_gets_noexcept_iterator<_ForwardIterator>::value,
2427 typename basic_string<_CharT, _Traits, _Allocator>::iterator
2428>::type
2429basic_string<_CharT, _Traits, _Allocator>::insert(const_iterator __pos, _ForwardIterator __first, _ForwardIterator __last)
2430{
2431#if _LIBCPP_DEBUG_LEVEL >= 2
2432 _LIBCPP_ASSERT(__get_const_db()->__find_c_from_i(&__pos) == this,
2433 "string::insert(iterator, range) called with an iterator not"
2434 " referring to this string");
2435#endif
2436 size_type __ip = static_cast<size_type>(__pos - begin());
2437 size_type __n = static_cast<size_type>(_VSTD::distance(__first, __last));
2438 if (__n)
2439 {
2440 typedef typename iterator_traits<_ForwardIterator>::reference _CharRef;
2441 _CharRef __tmp_char = *__first;
2442 if (__ptr_in_range(_VSTD::addressof(__tmp_char), data(), data() + size()))
2443 {
2444 const basic_string __temp(__first, __last, __alloc());
2445 return insert(__pos, __temp.data(), __temp.data() + __temp.size());
2446 }
2447
2448 size_type __sz = size();
2449 size_type __cap = capacity();
2450 value_type* __p;
2451 if (__cap - __sz >= __n)
2452 {
2453 __p = _VSTD::__to_raw_pointer(__get_pointer());
2454 size_type __n_move = __sz - __ip;
2455 if (__n_move != 0)
2456 traits_type::move(__p + __ip + __n, __p + __ip, __n_move);
2457 }
2458 else
2459 {
2460 __grow_by(__cap, __sz + __n - __cap, __sz, __ip, 0, __n);
2461 __p = _VSTD::__to_raw_pointer(__get_long_pointer());
2462 }
2463 __sz += __n;
2464 __set_size(__sz);
2465 traits_type::assign(__p[__sz], value_type());
2466 for (__p += __ip; __first != __last; ++__p, ++__first)
2467 traits_type::assign(*__p, *__first);
2468 }
2469 return begin() + __ip;
2470}
2471
2472template <class _CharT, class _Traits, class _Allocator>
2473inline _LIBCPP_INLINE_VISIBILITY
2474basic_string<_CharT, _Traits, _Allocator>&
2475basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos1, const basic_string& __str)
2476{
2477 return insert(__pos1, __str.data(), __str.size());
2478}
2479
2480template <class _CharT, class _Traits, class _Allocator>
2481basic_string<_CharT, _Traits, _Allocator>&
2482basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos1, const basic_string& __str,
2483 size_type __pos2, size_type __n)
2484{
2485 size_type __str_sz = __str.size();
2486 if (__pos2 > __str_sz)
2487 this->__throw_out_of_range();
2488 return insert(__pos1, __str.data() + __pos2, _VSTD::min(__n, __str_sz - __pos2));
2489}
2490
2491template <class _CharT, class _Traits, class _Allocator>
2492template <class _Tp>
2493typename enable_if
2494<
2495 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value,
2496 basic_string<_CharT, _Traits, _Allocator>&
2497>::type
2498basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos1, const _Tp& __t,
2499 size_type __pos2, size_type __n)
2500{
2501 __self_view __sv = __t;
2502 size_type __str_sz = __sv.size();
2503 if (__pos2 > __str_sz)
2504 this->__throw_out_of_range();
2505 return insert(__pos1, __sv.data() + __pos2, _VSTD::min(__n, __str_sz - __pos2));
2506}
2507
2508template <class _CharT, class _Traits, class _Allocator>
2509basic_string<_CharT, _Traits, _Allocator>&
2510basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos, const value_type* __s)
2511{
2512 _LIBCPP_ASSERT(__s != nullptr, "string::insert received nullptr");
2513 return insert(__pos, __s, traits_type::length(__s));
2514}
2515
2516template <class _CharT, class _Traits, class _Allocator>
2517typename basic_string<_CharT, _Traits, _Allocator>::iterator
2518basic_string<_CharT, _Traits, _Allocator>::insert(const_iterator __pos, value_type __c)
2519{
2520 size_type __ip = static_cast<size_type>(__pos - begin());
2521 size_type __sz = size();
2522 size_type __cap = capacity();
2523 value_type* __p;
2524 if (__cap == __sz)
2525 {
2526 __grow_by(__cap, 1, __sz, __ip, 0, 1);
2527 __p = _VSTD::__to_raw_pointer(__get_long_pointer());
2528 }
2529 else
2530 {
2531 __p = _VSTD::__to_raw_pointer(__get_pointer());
2532 size_type __n_move = __sz - __ip;
2533 if (__n_move != 0)
2534 traits_type::move(__p + __ip + 1, __p + __ip, __n_move);
2535 }
2536 traits_type::assign(__p[__ip], __c);
2537 traits_type::assign(__p[++__sz], value_type());
2538 __set_size(__sz);
2539 return begin() + static_cast<difference_type>(__ip);
2540}
2541
2542template <class _CharT, class _Traits, class _Allocator>
2543inline _LIBCPP_INLINE_VISIBILITY
2544typename basic_string<_CharT, _Traits, _Allocator>::iterator
2545basic_string<_CharT, _Traits, _Allocator>::insert(const_iterator __pos, size_type __n, value_type __c)
2546{
2547#if _LIBCPP_DEBUG_LEVEL >= 2
2548 _LIBCPP_ASSERT(__get_const_db()->__find_c_from_i(&__pos) == this,
2549 "string::insert(iterator, n, value) called with an iterator not"
2550 " referring to this string");
2551#endif
2552 difference_type __p = __pos - begin();
2553 insert(static_cast<size_type>(__p), __n, __c);
2554 return begin() + __p;
2555}
2556
2557// replace
2558
2559template <class _CharT, class _Traits, class _Allocator>
2560basic_string<_CharT, _Traits, _Allocator>&
2561basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos, size_type __n1, const value_type* __s, size_type __n2)
2562 _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK
2563{
2564 _LIBCPP_ASSERT(__n2 == 0 || __s != nullptr, "string::replace received nullptr");
2565 size_type __sz = size();
2566 if (__pos > __sz)
2567 this->__throw_out_of_range();
2568 __n1 = _VSTD::min(__n1, __sz - __pos);
2569 size_type __cap = capacity();
2570 if (__cap - __sz + __n1 >= __n2)
2571 {
2572 value_type* __p = _VSTD::__to_raw_pointer(__get_pointer());
2573 if (__n1 != __n2)
2574 {
2575 size_type __n_move = __sz - __pos - __n1;
2576 if (__n_move != 0)
2577 {
2578 if (__n1 > __n2)
2579 {
2580 traits_type::move(__p + __pos, __s, __n2);
2581 traits_type::move(__p + __pos + __n2, __p + __pos + __n1, __n_move);
2582 goto __finish;
2583 }
2584 if (__p + __pos < __s && __s < __p + __sz)
2585 {
2586 if (__p + __pos + __n1 <= __s)
2587 __s += __n2 - __n1;
2588 else // __p + __pos < __s < __p + __pos + __n1
2589 {
2590 traits_type::move(__p + __pos, __s, __n1);
2591 __pos += __n1;
2592 __s += __n2;
2593 __n2 -= __n1;
2594 __n1 = 0;
2595 }
2596 }
2597 traits_type::move(__p + __pos + __n2, __p + __pos + __n1, __n_move);
2598 }
2599 }
2600 traits_type::move(__p + __pos, __s, __n2);
2601__finish:
2602// __sz += __n2 - __n1; in this and the below function below can cause unsigned integer overflow,
2603// but this is a safe operation, so we disable the check.
2604 __sz += __n2 - __n1;
2605 __set_size(__sz);
2606 __invalidate_iterators_past(__sz);
2607 traits_type::assign(__p[__sz], value_type());
2608 }
2609 else
2610 __grow_by_and_replace(__cap, __sz - __n1 + __n2 - __cap, __sz, __pos, __n1, __n2, __s);
2611 return *this;
2612}
2613
2614template <class _CharT, class _Traits, class _Allocator>
2615basic_string<_CharT, _Traits, _Allocator>&
2616basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos, size_type __n1, size_type __n2, value_type __c)
2617 _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK
2618{
2619 size_type __sz = size();
2620 if (__pos > __sz)
2621 this->__throw_out_of_range();
2622 __n1 = _VSTD::min(__n1, __sz - __pos);
2623 size_type __cap = capacity();
2624 value_type* __p;
2625 if (__cap - __sz + __n1 >= __n2)
2626 {
2627 __p = _VSTD::__to_raw_pointer(__get_pointer());
2628 if (__n1 != __n2)
2629 {
2630 size_type __n_move = __sz - __pos - __n1;
2631 if (__n_move != 0)
2632 traits_type::move(__p + __pos + __n2, __p + __pos + __n1, __n_move);
2633 }
2634 }
2635 else
2636 {
2637 __grow_by(__cap, __sz - __n1 + __n2 - __cap, __sz, __pos, __n1, __n2);
2638 __p = _VSTD::__to_raw_pointer(__get_long_pointer());
2639 }
2640 traits_type::assign(__p + __pos, __n2, __c);
2641 __sz += __n2 - __n1;
2642 __set_size(__sz);
2643 __invalidate_iterators_past(__sz);
2644 traits_type::assign(__p[__sz], value_type());
2645 return *this;
2646}
2647
2648template <class _CharT, class _Traits, class _Allocator>
2649template<class _InputIterator>
2650typename enable_if
2651<
2652 __is_input_iterator<_InputIterator>::value,
2653 basic_string<_CharT, _Traits, _Allocator>&
2654>::type
2655basic_string<_CharT, _Traits, _Allocator>::replace(const_iterator __i1, const_iterator __i2,
2656 _InputIterator __j1, _InputIterator __j2)
2657{
2658 const basic_string __temp(__j1, __j2, __alloc());
2659 return this->replace(__i1, __i2, __temp);
2660}
2661
2662template <class _CharT, class _Traits, class _Allocator>
2663inline _LIBCPP_INLINE_VISIBILITY
2664basic_string<_CharT, _Traits, _Allocator>&
2665basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos1, size_type __n1, const basic_string& __str)
2666{
2667 return replace(__pos1, __n1, __str.data(), __str.size());
2668}
2669
2670template <class _CharT, class _Traits, class _Allocator>
2671basic_string<_CharT, _Traits, _Allocator>&
2672basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos1, size_type __n1, const basic_string& __str,
2673 size_type __pos2, size_type __n2)
2674{
2675 size_type __str_sz = __str.size();
2676 if (__pos2 > __str_sz)
2677 this->__throw_out_of_range();
2678 return replace(__pos1, __n1, __str.data() + __pos2, _VSTD::min(__n2, __str_sz - __pos2));
2679}
2680
2681template <class _CharT, class _Traits, class _Allocator>
2682template <class _Tp>
2683typename enable_if
2684<
2685 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value,
2686 basic_string<_CharT, _Traits, _Allocator>&
2687>::type
2688basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos1, size_type __n1, const _Tp& __t,
2689 size_type __pos2, size_type __n2)
2690{
2691 __self_view __sv = __t;
2692 size_type __str_sz = __sv.size();
2693 if (__pos2 > __str_sz)
2694 this->__throw_out_of_range();
2695 return replace(__pos1, __n1, __sv.data() + __pos2, _VSTD::min(__n2, __str_sz - __pos2));
2696}
2697
2698template <class _CharT, class _Traits, class _Allocator>
2699basic_string<_CharT, _Traits, _Allocator>&
2700basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos, size_type __n1, const value_type* __s)
2701{
2702 _LIBCPP_ASSERT(__s != nullptr, "string::replace received nullptr");
2703 return replace(__pos, __n1, __s, traits_type::length(__s));
2704}
2705
2706template <class _CharT, class _Traits, class _Allocator>
2707inline _LIBCPP_INLINE_VISIBILITY
2708basic_string<_CharT, _Traits, _Allocator>&
2709basic_string<_CharT, _Traits, _Allocator>::replace(const_iterator __i1, const_iterator __i2, const basic_string& __str)
2710{
2711 return replace(static_cast<size_type>(__i1 - begin()), static_cast<size_type>(__i2 - __i1),
2712 __str.data(), __str.size());
2713}
2714
2715template <class _CharT, class _Traits, class _Allocator>
2716inline _LIBCPP_INLINE_VISIBILITY
2717basic_string<_CharT, _Traits, _Allocator>&
2718basic_string<_CharT, _Traits, _Allocator>::replace(const_iterator __i1, const_iterator __i2, const value_type* __s, size_type __n)
2719{
2720 return replace(static_cast<size_type>(__i1 - begin()), static_cast<size_type>(__i2 - __i1), __s, __n);
2721}
2722
2723template <class _CharT, class _Traits, class _Allocator>
2724inline _LIBCPP_INLINE_VISIBILITY
2725basic_string<_CharT, _Traits, _Allocator>&
2726basic_string<_CharT, _Traits, _Allocator>::replace(const_iterator __i1, const_iterator __i2, const value_type* __s)
2727{
2728 return replace(static_cast<size_type>(__i1 - begin()), static_cast<size_type>(__i2 - __i1), __s);
2729}
2730
2731template <class _CharT, class _Traits, class _Allocator>
2732inline _LIBCPP_INLINE_VISIBILITY
2733basic_string<_CharT, _Traits, _Allocator>&
2734basic_string<_CharT, _Traits, _Allocator>::replace(const_iterator __i1, const_iterator __i2, size_type __n, value_type __c)
2735{
2736 return replace(static_cast<size_type>(__i1 - begin()), static_cast<size_type>(__i2 - __i1), __n, __c);
2737}
2738
2739// erase
2740
2741template <class _CharT, class _Traits, class _Allocator>
2742basic_string<_CharT, _Traits, _Allocator>&
2743basic_string<_CharT, _Traits, _Allocator>::erase(size_type __pos, size_type __n)
2744{
2745 size_type __sz = size();
2746 if (__pos > __sz)
2747 this->__throw_out_of_range();
2748 if (__n)
2749 {
2750 value_type* __p = _VSTD::__to_raw_pointer(__get_pointer());
2751 __n = _VSTD::min(__n, __sz - __pos);
2752 size_type __n_move = __sz - __pos - __n;
2753 if (__n_move != 0)
2754 traits_type::move(__p + __pos, __p + __pos + __n, __n_move);
2755 __sz -= __n;
2756 __set_size(__sz);
2757 __invalidate_iterators_past(__sz);
2758 traits_type::assign(__p[__sz], value_type());
2759 }
2760 return *this;
2761}
2762
2763template <class _CharT, class _Traits, class _Allocator>
2764inline _LIBCPP_INLINE_VISIBILITY
2765typename basic_string<_CharT, _Traits, _Allocator>::iterator
2766basic_string<_CharT, _Traits, _Allocator>::erase(const_iterator __pos)
2767{
2768#if _LIBCPP_DEBUG_LEVEL >= 2
2769 _LIBCPP_ASSERT(__get_const_db()->__find_c_from_i(&__pos) == this,
2770 "string::erase(iterator) called with an iterator not"
2771 " referring to this string");
2772#endif
2773 _LIBCPP_ASSERT(__pos != end(),
2774 "string::erase(iterator) called with a non-dereferenceable iterator");
2775 iterator __b = begin();
2776 size_type __r = static_cast<size_type>(__pos - __b);
2777 erase(__r, 1);
2778 return __b + static_cast<difference_type>(__r);
2779}
2780
2781template <class _CharT, class _Traits, class _Allocator>
2782inline _LIBCPP_INLINE_VISIBILITY
2783typename basic_string<_CharT, _Traits, _Allocator>::iterator
2784basic_string<_CharT, _Traits, _Allocator>::erase(const_iterator __first, const_iterator __last)
2785{
2786#if _LIBCPP_DEBUG_LEVEL >= 2
2787 _LIBCPP_ASSERT(__get_const_db()->__find_c_from_i(&__first) == this,
2788 "string::erase(iterator, iterator) called with an iterator not"
2789 " referring to this string");
2790#endif
2791 _LIBCPP_ASSERT(__first <= __last, "string::erase(first, last) called with invalid range");
2792 iterator __b = begin();
2793 size_type __r = static_cast<size_type>(__first - __b);
2794 erase(__r, static_cast<size_type>(__last - __first));
2795 return __b + static_cast<difference_type>(__r);
2796}
2797
2798template <class _CharT, class _Traits, class _Allocator>
2799inline _LIBCPP_INLINE_VISIBILITY
2800void
2801basic_string<_CharT, _Traits, _Allocator>::pop_back()
2802{
2803 _LIBCPP_ASSERT(!empty(), "string::pop_back(): string is already empty");
2804 size_type __sz;
2805 if (__is_long())
2806 {
2807 __sz = __get_long_size() - 1;
2808 __set_long_size(__sz);
2809 traits_type::assign(*(__get_long_pointer() + __sz), value_type());
2810 }
2811 else
2812 {
2813 __sz = __get_short_size() - 1;
2814 __set_short_size(__sz);
2815 traits_type::assign(*(__get_short_pointer() + __sz), value_type());
2816 }
2817 __invalidate_iterators_past(__sz);
2818}
2819
2820template <class _CharT, class _Traits, class _Allocator>
2821inline _LIBCPP_INLINE_VISIBILITY
2822void
2823basic_string<_CharT, _Traits, _Allocator>::clear() _NOEXCEPT
2824{
2825 __invalidate_all_iterators();
2826 if (__is_long())
2827 {
2828 traits_type::assign(*__get_long_pointer(), value_type());
2829 __set_long_size(0);
2830 }
2831 else
2832 {
2833 traits_type::assign(*__get_short_pointer(), value_type());
2834 __set_short_size(0);
2835 }
2836}
2837
2838template <class _CharT, class _Traits, class _Allocator>
2839inline _LIBCPP_INLINE_VISIBILITY
2840void
2841basic_string<_CharT, _Traits, _Allocator>::__erase_to_end(size_type __pos)
2842{
2843 if (__is_long())
2844 {
2845 traits_type::assign(*(__get_long_pointer() + __pos), value_type());
2846 __set_long_size(__pos);
2847 }
2848 else
2849 {
2850 traits_type::assign(*(__get_short_pointer() + __pos), value_type());
2851 __set_short_size(__pos);
2852 }
2853 __invalidate_iterators_past(__pos);
2854}
2855
2856template <class _CharT, class _Traits, class _Allocator>
2857void
2858basic_string<_CharT, _Traits, _Allocator>::resize(size_type __n, value_type __c)
2859{
2860 size_type __sz = size();
2861 if (__n > __sz)
2862 append(__n - __sz, __c);
2863 else
2864 __erase_to_end(__n);
2865}
2866
2867template <class _CharT, class _Traits, class _Allocator>
2868inline _LIBCPP_INLINE_VISIBILITY
2869typename basic_string<_CharT, _Traits, _Allocator>::size_type
2870basic_string<_CharT, _Traits, _Allocator>::max_size() const _NOEXCEPT
2871{
2872 size_type __m = __alloc_traits::max_size(__alloc());
2873#if _LIBCPP_BIG_ENDIAN
2874 return (__m <= ~__long_mask ? __m : __m/2) - __alignment;
2875#else
2876 return __m - __alignment;
2877#endif
2878}
2879
2880template <class _CharT, class _Traits, class _Allocator>
2881void
2882basic_string<_CharT, _Traits, _Allocator>::reserve(size_type __res_arg)
2883{
2884 if (__res_arg > max_size())
2885 this->__throw_length_error();
2886 size_type __cap = capacity();
2887 size_type __sz = size();
2888 __res_arg = _VSTD::max(__res_arg, __sz);
2889 __res_arg = __recommend(__res_arg);
2890 if (__res_arg != __cap)
2891 {
2892 pointer __new_data, __p;
2893 bool __was_long, __now_long;
2894 if (__res_arg == __min_cap - 1)
2895 {
2896 __was_long = true;
2897 __now_long = false;
2898 __new_data = __get_short_pointer();
2899 __p = __get_long_pointer();
2900 }
2901 else
2902 {
2903 if (__res_arg > __cap)
2904 __new_data = __alloc_traits::allocate(__alloc(), __res_arg+1);
2905 else
2906 {
2907 #ifndef _LIBCPP_NO_EXCEPTIONS
2908 try
2909 {
2910 #endif // _LIBCPP_NO_EXCEPTIONS
2911 __new_data = __alloc_traits::allocate(__alloc(), __res_arg+1);
2912 #ifndef _LIBCPP_NO_EXCEPTIONS
2913 }
2914 catch (...)
2915 {
2916 return;
2917 }
2918 #else // _LIBCPP_NO_EXCEPTIONS
2919 if (__new_data == nullptr)
2920 return;
2921 #endif // _LIBCPP_NO_EXCEPTIONS
2922 }
2923 __now_long = true;
2924 __was_long = __is_long();
2925 __p = __get_pointer();
2926 }
2927 traits_type::copy(_VSTD::__to_raw_pointer(__new_data),
2928 _VSTD::__to_raw_pointer(__p), size()+1);
2929 if (__was_long)
2930 __alloc_traits::deallocate(__alloc(), __p, __cap+1);
2931 if (__now_long)
2932 {
2933 __set_long_cap(__res_arg+1);
2934 __set_long_size(__sz);
2935 __set_long_pointer(__new_data);
2936 }
2937 else
2938 __set_short_size(__sz);
2939 __invalidate_all_iterators();
2940 }
2941}
2942
2943template <class _CharT, class _Traits, class _Allocator>
2944inline _LIBCPP_INLINE_VISIBILITY
2945typename basic_string<_CharT, _Traits, _Allocator>::const_reference
2946basic_string<_CharT, _Traits, _Allocator>::operator[](size_type __pos) const _NOEXCEPT
2947{
2948 _LIBCPP_ASSERT(__pos <= size(), "string index out of bounds");
2949 return *(data() + __pos);
2950}
2951
2952template <class _CharT, class _Traits, class _Allocator>
2953inline _LIBCPP_INLINE_VISIBILITY
2954typename basic_string<_CharT, _Traits, _Allocator>::reference
2955basic_string<_CharT, _Traits, _Allocator>::operator[](size_type __pos) _NOEXCEPT
2956{
2957 _LIBCPP_ASSERT(__pos <= size(), "string index out of bounds");
2958 return *(__get_pointer() + __pos);
2959}
2960
2961template <class _CharT, class _Traits, class _Allocator>
2962typename basic_string<_CharT, _Traits, _Allocator>::const_reference
2963basic_string<_CharT, _Traits, _Allocator>::at(size_type __n) const
2964{
2965 if (__n >= size())
2966 this->__throw_out_of_range();
2967 return (*this)[__n];
2968}
2969
2970template <class _CharT, class _Traits, class _Allocator>
2971typename basic_string<_CharT, _Traits, _Allocator>::reference
2972basic_string<_CharT, _Traits, _Allocator>::at(size_type __n)
2973{
2974 if (__n >= size())
2975 this->__throw_out_of_range();
2976 return (*this)[__n];
2977}
2978
2979template <class _CharT, class _Traits, class _Allocator>
2980inline _LIBCPP_INLINE_VISIBILITY
2981typename basic_string<_CharT, _Traits, _Allocator>::reference
2982basic_string<_CharT, _Traits, _Allocator>::front()
2983{
2984 _LIBCPP_ASSERT(!empty(), "string::front(): string is empty");
2985 return *__get_pointer();
2986}
2987
2988template <class _CharT, class _Traits, class _Allocator>
2989inline _LIBCPP_INLINE_VISIBILITY
2990typename basic_string<_CharT, _Traits, _Allocator>::const_reference
2991basic_string<_CharT, _Traits, _Allocator>::front() const
2992{
2993 _LIBCPP_ASSERT(!empty(), "string::front(): string is empty");
2994 return *data();
2995}
2996
2997template <class _CharT, class _Traits, class _Allocator>
2998inline _LIBCPP_INLINE_VISIBILITY
2999typename basic_string<_CharT, _Traits, _Allocator>::reference
3000basic_string<_CharT, _Traits, _Allocator>::back()
3001{
3002 _LIBCPP_ASSERT(!empty(), "string::back(): string is empty");
3003 return *(__get_pointer() + size() - 1);
3004}
3005
3006template <class _CharT, class _Traits, class _Allocator>
3007inline _LIBCPP_INLINE_VISIBILITY
3008typename basic_string<_CharT, _Traits, _Allocator>::const_reference
3009basic_string<_CharT, _Traits, _Allocator>::back() const
3010{
3011 _LIBCPP_ASSERT(!empty(), "string::back(): string is empty");
3012 return *(data() + size() - 1);
3013}
3014
3015template <class _CharT, class _Traits, class _Allocator>
3016typename basic_string<_CharT, _Traits, _Allocator>::size_type
3017basic_string<_CharT, _Traits, _Allocator>::copy(value_type* __s, size_type __n, size_type __pos) const
3018{
3019 size_type __sz = size();
3020 if (__pos > __sz)
3021 this->__throw_out_of_range();
3022 size_type __rlen = _VSTD::min(__n, __sz - __pos);
3023 traits_type::copy(__s, data() + __pos, __rlen);
3024 return __rlen;
3025}
3026
3027template <class _CharT, class _Traits, class _Allocator>
3028inline _LIBCPP_INLINE_VISIBILITY
3029basic_string<_CharT, _Traits, _Allocator>
3030basic_string<_CharT, _Traits, _Allocator>::substr(size_type __pos, size_type __n) const
3031{
3032 return basic_string(*this, __pos, __n, __alloc());
3033}
3034
3035template <class _CharT, class _Traits, class _Allocator>
3036inline _LIBCPP_INLINE_VISIBILITY
3037void
3038basic_string<_CharT, _Traits, _Allocator>::swap(basic_string& __str)
3039#if _LIBCPP_STD_VER >= 14
3040 _NOEXCEPT_DEBUG
3041#else
3042 _NOEXCEPT_DEBUG_(!__alloc_traits::propagate_on_container_swap::value ||
3043 __is_nothrow_swappable<allocator_type>::value)
3044#endif
3045{
3046#if _LIBCPP_DEBUG_LEVEL >= 2
3047 if (!__is_long())
3048 __get_db()->__invalidate_all(this);
3049 if (!__str.__is_long())
3050 __get_db()->__invalidate_all(&__str);
3051 __get_db()->swap(this, &__str);
3052#endif
3053 _LIBCPP_ASSERT(
3054 __alloc_traits::propagate_on_container_swap::value ||
3055 __alloc_traits::is_always_equal::value ||
3056 __alloc() == __str.__alloc(), "swapping non-equal allocators");
3057 _VSTD::swap(__r_.first(), __str.__r_.first());
3058 __swap_allocator(__alloc(), __str.__alloc());
3059}
3060
3061// find
3062
3063template <class _Traits>
3064struct _LIBCPP_HIDDEN __traits_eq
3065{
3066 typedef typename _Traits::char_type char_type;
3067 _LIBCPP_INLINE_VISIBILITY
3068 bool operator()(const char_type& __x, const char_type& __y) _NOEXCEPT
3069 {return _Traits::eq(__x, __y);}
3070};
3071
3072template<class _CharT, class _Traits, class _Allocator>
3073typename basic_string<_CharT, _Traits, _Allocator>::size_type
3074basic_string<_CharT, _Traits, _Allocator>::find(const value_type* __s,
3075 size_type __pos,
3076 size_type __n) const _NOEXCEPT
3077{
3078 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::find(): received nullptr");
3079 return __str_find<value_type, size_type, traits_type, npos>
3080 (data(), size(), __s, __pos, __n);
3081}
3082
3083template<class _CharT, class _Traits, class _Allocator>
3084inline _LIBCPP_INLINE_VISIBILITY
3085typename basic_string<_CharT, _Traits, _Allocator>::size_type
3086basic_string<_CharT, _Traits, _Allocator>::find(const basic_string& __str,
3087 size_type __pos) const _NOEXCEPT
3088{
3089 return __str_find<value_type, size_type, traits_type, npos>
3090 (data(), size(), __str.data(), __pos, __str.size());
3091}
3092
3093template<class _CharT, class _Traits, class _Allocator>
3094inline _LIBCPP_INLINE_VISIBILITY
3095typename basic_string<_CharT, _Traits, _Allocator>::size_type
3096basic_string<_CharT, _Traits, _Allocator>::find(__self_view __sv,
3097 size_type __pos) const _NOEXCEPT
3098{
3099 return __str_find<value_type, size_type, traits_type, npos>
3100 (data(), size(), __sv.data(), __pos, __sv.size());
3101}
3102
3103template<class _CharT, class _Traits, class _Allocator>
3104inline _LIBCPP_INLINE_VISIBILITY
3105typename basic_string<_CharT, _Traits, _Allocator>::size_type
3106basic_string<_CharT, _Traits, _Allocator>::find(const value_type* __s,
3107 size_type __pos) const _NOEXCEPT
3108{
3109 _LIBCPP_ASSERT(__s != nullptr, "string::find(): received nullptr");
3110 return __str_find<value_type, size_type, traits_type, npos>
3111 (data(), size(), __s, __pos, traits_type::length(__s));
3112}
3113
3114template<class _CharT, class _Traits, class _Allocator>
3115typename basic_string<_CharT, _Traits, _Allocator>::size_type
3116basic_string<_CharT, _Traits, _Allocator>::find(value_type __c,
3117 size_type __pos) const _NOEXCEPT
3118{
3119 return __str_find<value_type, size_type, traits_type, npos>
3120 (data(), size(), __c, __pos);
3121}
3122
3123// rfind
3124
3125template<class _CharT, class _Traits, class _Allocator>
3126typename basic_string<_CharT, _Traits, _Allocator>::size_type
3127basic_string<_CharT, _Traits, _Allocator>::rfind(const value_type* __s,
3128 size_type __pos,
3129 size_type __n) const _NOEXCEPT
3130{
3131 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::rfind(): received nullptr");
3132 return __str_rfind<value_type, size_type, traits_type, npos>
3133 (data(), size(), __s, __pos, __n);
3134}
3135
3136template<class _CharT, class _Traits, class _Allocator>
3137inline _LIBCPP_INLINE_VISIBILITY
3138typename basic_string<_CharT, _Traits, _Allocator>::size_type
3139basic_string<_CharT, _Traits, _Allocator>::rfind(const basic_string& __str,
3140 size_type __pos) const _NOEXCEPT
3141{
3142 return __str_rfind<value_type, size_type, traits_type, npos>
3143 (data(), size(), __str.data(), __pos, __str.size());
3144}
3145
3146template<class _CharT, class _Traits, class _Allocator>
3147inline _LIBCPP_INLINE_VISIBILITY
3148typename basic_string<_CharT, _Traits, _Allocator>::size_type
3149basic_string<_CharT, _Traits, _Allocator>::rfind(__self_view __sv,
3150 size_type __pos) const _NOEXCEPT
3151{
3152 return __str_rfind<value_type, size_type, traits_type, npos>
3153 (data(), size(), __sv.data(), __pos, __sv.size());
3154}
3155
3156template<class _CharT, class _Traits, class _Allocator>
3157inline _LIBCPP_INLINE_VISIBILITY
3158typename basic_string<_CharT, _Traits, _Allocator>::size_type
3159basic_string<_CharT, _Traits, _Allocator>::rfind(const value_type* __s,
3160 size_type __pos) const _NOEXCEPT
3161{
3162 _LIBCPP_ASSERT(__s != nullptr, "string::rfind(): received nullptr");
3163 return __str_rfind<value_type, size_type, traits_type, npos>
3164 (data(), size(), __s, __pos, traits_type::length(__s));
3165}
3166
3167template<class _CharT, class _Traits, class _Allocator>
3168typename basic_string<_CharT, _Traits, _Allocator>::size_type
3169basic_string<_CharT, _Traits, _Allocator>::rfind(value_type __c,
3170 size_type __pos) const _NOEXCEPT
3171{
3172 return __str_rfind<value_type, size_type, traits_type, npos>
3173 (data(), size(), __c, __pos);
3174}
3175
3176// find_first_of
3177
3178template<class _CharT, class _Traits, class _Allocator>
3179typename basic_string<_CharT, _Traits, _Allocator>::size_type
3180basic_string<_CharT, _Traits, _Allocator>::find_first_of(const value_type* __s,
3181 size_type __pos,
3182 size_type __n) const _NOEXCEPT
3183{
3184 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::find_first_of(): received nullptr");
3185 return __str_find_first_of<value_type, size_type, traits_type, npos>
3186 (data(), size(), __s, __pos, __n);
3187}
3188
3189template<class _CharT, class _Traits, class _Allocator>
3190inline _LIBCPP_INLINE_VISIBILITY
3191typename basic_string<_CharT, _Traits, _Allocator>::size_type
3192basic_string<_CharT, _Traits, _Allocator>::find_first_of(const basic_string& __str,
3193 size_type __pos) const _NOEXCEPT
3194{
3195 return __str_find_first_of<value_type, size_type, traits_type, npos>
3196 (data(), size(), __str.data(), __pos, __str.size());
3197}
3198
3199template<class _CharT, class _Traits, class _Allocator>
3200inline _LIBCPP_INLINE_VISIBILITY
3201typename basic_string<_CharT, _Traits, _Allocator>::size_type
3202basic_string<_CharT, _Traits, _Allocator>::find_first_of(__self_view __sv,
3203 size_type __pos) const _NOEXCEPT
3204{
3205 return __str_find_first_of<value_type, size_type, traits_type, npos>
3206 (data(), size(), __sv.data(), __pos, __sv.size());
3207}
3208
3209template<class _CharT, class _Traits, class _Allocator>
3210inline _LIBCPP_INLINE_VISIBILITY
3211typename basic_string<_CharT, _Traits, _Allocator>::size_type
3212basic_string<_CharT, _Traits, _Allocator>::find_first_of(const value_type* __s,
3213 size_type __pos) const _NOEXCEPT
3214{
3215 _LIBCPP_ASSERT(__s != nullptr, "string::find_first_of(): received nullptr");
3216 return __str_find_first_of<value_type, size_type, traits_type, npos>
3217 (data(), size(), __s, __pos, traits_type::length(__s));
3218}
3219
3220template<class _CharT, class _Traits, class _Allocator>
3221inline _LIBCPP_INLINE_VISIBILITY
3222typename basic_string<_CharT, _Traits, _Allocator>::size_type
3223basic_string<_CharT, _Traits, _Allocator>::find_first_of(value_type __c,
3224 size_type __pos) const _NOEXCEPT
3225{
3226 return find(__c, __pos);
3227}
3228
3229// find_last_of
3230
3231template<class _CharT, class _Traits, class _Allocator>
3232typename basic_string<_CharT, _Traits, _Allocator>::size_type
3233basic_string<_CharT, _Traits, _Allocator>::find_last_of(const value_type* __s,
3234 size_type __pos,
3235 size_type __n) const _NOEXCEPT
3236{
3237 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::find_last_of(): received nullptr");
3238 return __str_find_last_of<value_type, size_type, traits_type, npos>
3239 (data(), size(), __s, __pos, __n);
3240}
3241
3242template<class _CharT, class _Traits, class _Allocator>
3243inline _LIBCPP_INLINE_VISIBILITY
3244typename basic_string<_CharT, _Traits, _Allocator>::size_type
3245basic_string<_CharT, _Traits, _Allocator>::find_last_of(const basic_string& __str,
3246 size_type __pos) const _NOEXCEPT
3247{
3248 return __str_find_last_of<value_type, size_type, traits_type, npos>
3249 (data(), size(), __str.data(), __pos, __str.size());
3250}
3251
3252template<class _CharT, class _Traits, class _Allocator>
3253inline _LIBCPP_INLINE_VISIBILITY
3254typename basic_string<_CharT, _Traits, _Allocator>::size_type
3255basic_string<_CharT, _Traits, _Allocator>::find_last_of(__self_view __sv,
3256 size_type __pos) const _NOEXCEPT
3257{
3258 return __str_find_last_of<value_type, size_type, traits_type, npos>
3259 (data(), size(), __sv.data(), __pos, __sv.size());
3260}
3261
3262template<class _CharT, class _Traits, class _Allocator>
3263inline _LIBCPP_INLINE_VISIBILITY
3264typename basic_string<_CharT, _Traits, _Allocator>::size_type
3265basic_string<_CharT, _Traits, _Allocator>::find_last_of(const value_type* __s,
3266 size_type __pos) const _NOEXCEPT
3267{
3268 _LIBCPP_ASSERT(__s != nullptr, "string::find_last_of(): received nullptr");
3269 return __str_find_last_of<value_type, size_type, traits_type, npos>
3270 (data(), size(), __s, __pos, traits_type::length(__s));
3271}
3272
3273template<class _CharT, class _Traits, class _Allocator>
3274inline _LIBCPP_INLINE_VISIBILITY
3275typename basic_string<_CharT, _Traits, _Allocator>::size_type
3276basic_string<_CharT, _Traits, _Allocator>::find_last_of(value_type __c,
3277 size_type __pos) const _NOEXCEPT
3278{
3279 return rfind(__c, __pos);
3280}
3281
3282// find_first_not_of
3283
3284template<class _CharT, class _Traits, class _Allocator>
3285typename basic_string<_CharT, _Traits, _Allocator>::size_type
3286basic_string<_CharT, _Traits, _Allocator>::find_first_not_of(const value_type* __s,
3287 size_type __pos,
3288 size_type __n) const _NOEXCEPT
3289{
3290 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::find_first_not_of(): received nullptr");
3291 return __str_find_first_not_of<value_type, size_type, traits_type, npos>
3292 (data(), size(), __s, __pos, __n);
3293}
3294
3295template<class _CharT, class _Traits, class _Allocator>
3296inline _LIBCPP_INLINE_VISIBILITY
3297typename basic_string<_CharT, _Traits, _Allocator>::size_type
3298basic_string<_CharT, _Traits, _Allocator>::find_first_not_of(const basic_string& __str,
3299 size_type __pos) const _NOEXCEPT
3300{
3301 return __str_find_first_not_of<value_type, size_type, traits_type, npos>
3302 (data(), size(), __str.data(), __pos, __str.size());
3303}
3304
3305template<class _CharT, class _Traits, class _Allocator>
3306inline _LIBCPP_INLINE_VISIBILITY
3307typename basic_string<_CharT, _Traits, _Allocator>::size_type
3308basic_string<_CharT, _Traits, _Allocator>::find_first_not_of(__self_view __sv,
3309 size_type __pos) const _NOEXCEPT
3310{
3311 return __str_find_first_not_of<value_type, size_type, traits_type, npos>
3312 (data(), size(), __sv.data(), __pos, __sv.size());
3313}
3314
3315template<class _CharT, class _Traits, class _Allocator>
3316inline _LIBCPP_INLINE_VISIBILITY
3317typename basic_string<_CharT, _Traits, _Allocator>::size_type
3318basic_string<_CharT, _Traits, _Allocator>::find_first_not_of(const value_type* __s,
3319 size_type __pos) const _NOEXCEPT
3320{
3321 _LIBCPP_ASSERT(__s != nullptr, "string::find_first_not_of(): received nullptr");
3322 return __str_find_first_not_of<value_type, size_type, traits_type, npos>
3323 (data(), size(), __s, __pos, traits_type::length(__s));
3324}
3325
3326template<class _CharT, class _Traits, class _Allocator>
3327inline _LIBCPP_INLINE_VISIBILITY
3328typename basic_string<_CharT, _Traits, _Allocator>::size_type
3329basic_string<_CharT, _Traits, _Allocator>::find_first_not_of(value_type __c,
3330 size_type __pos) const _NOEXCEPT
3331{
3332 return __str_find_first_not_of<value_type, size_type, traits_type, npos>
3333 (data(), size(), __c, __pos);
3334}
3335
3336// find_last_not_of
3337
3338template<class _CharT, class _Traits, class _Allocator>
3339typename basic_string<_CharT, _Traits, _Allocator>::size_type
3340basic_string<_CharT, _Traits, _Allocator>::find_last_not_of(const value_type* __s,
3341 size_type __pos,
3342 size_type __n) const _NOEXCEPT
3343{
3344 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::find_last_not_of(): received nullptr");
3345 return __str_find_last_not_of<value_type, size_type, traits_type, npos>
3346 (data(), size(), __s, __pos, __n);
3347}
3348
3349template<class _CharT, class _Traits, class _Allocator>
3350inline _LIBCPP_INLINE_VISIBILITY
3351typename basic_string<_CharT, _Traits, _Allocator>::size_type
3352basic_string<_CharT, _Traits, _Allocator>::find_last_not_of(const basic_string& __str,
3353 size_type __pos) const _NOEXCEPT
3354{
3355 return __str_find_last_not_of<value_type, size_type, traits_type, npos>
3356 (data(), size(), __str.data(), __pos, __str.size());
3357}
3358
3359template<class _CharT, class _Traits, class _Allocator>
3360inline _LIBCPP_INLINE_VISIBILITY
3361typename basic_string<_CharT, _Traits, _Allocator>::size_type
3362basic_string<_CharT, _Traits, _Allocator>::find_last_not_of(__self_view __sv,
3363 size_type __pos) const _NOEXCEPT
3364{
3365 return __str_find_last_not_of<value_type, size_type, traits_type, npos>
3366 (data(), size(), __sv.data(), __pos, __sv.size());
3367}
3368
3369template<class _CharT, class _Traits, class _Allocator>
3370inline _LIBCPP_INLINE_VISIBILITY
3371typename basic_string<_CharT, _Traits, _Allocator>::size_type
3372basic_string<_CharT, _Traits, _Allocator>::find_last_not_of(const value_type* __s,
3373 size_type __pos) const _NOEXCEPT
3374{
3375 _LIBCPP_ASSERT(__s != nullptr, "string::find_last_not_of(): received nullptr");
3376 return __str_find_last_not_of<value_type, size_type, traits_type, npos>
3377 (data(), size(), __s, __pos, traits_type::length(__s));
3378}
3379
3380template<class _CharT, class _Traits, class _Allocator>
3381inline _LIBCPP_INLINE_VISIBILITY
3382typename basic_string<_CharT, _Traits, _Allocator>::size_type
3383basic_string<_CharT, _Traits, _Allocator>::find_last_not_of(value_type __c,
3384 size_type __pos) const _NOEXCEPT
3385{
3386 return __str_find_last_not_of<value_type, size_type, traits_type, npos>
3387 (data(), size(), __c, __pos);
3388}
3389
3390// compare
3391
3392template <class _CharT, class _Traits, class _Allocator>
3393inline _LIBCPP_INLINE_VISIBILITY
3394int
3395basic_string<_CharT, _Traits, _Allocator>::compare(__self_view __sv) const _NOEXCEPT
3396{
3397 size_t __lhs_sz = size();
3398 size_t __rhs_sz = __sv.size();
3399 int __result = traits_type::compare(data(), __sv.data(),
3400 _VSTD::min(__lhs_sz, __rhs_sz));
3401 if (__result != 0)
3402 return __result;
3403 if (__lhs_sz < __rhs_sz)
3404 return -1;
3405 if (__lhs_sz > __rhs_sz)
3406 return 1;
3407 return 0;
3408}
3409
3410template <class _CharT, class _Traits, class _Allocator>
3411inline _LIBCPP_INLINE_VISIBILITY
3412int
3413basic_string<_CharT, _Traits, _Allocator>::compare(const basic_string& __str) const _NOEXCEPT
3414{
3415 return compare(__self_view(__str));
3416}
3417
3418template <class _CharT, class _Traits, class _Allocator>
3419int
3420basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1,
3421 size_type __n1,
3422 const value_type* __s,
3423 size_type __n2) const
3424{
3425 _LIBCPP_ASSERT(__n2 == 0 || __s != nullptr, "string::compare(): received nullptr");
3426 size_type __sz = size();
3427 if (__pos1 > __sz || __n2 == npos)
3428 this->__throw_out_of_range();
3429 size_type __rlen = _VSTD::min(__n1, __sz - __pos1);
3430 int __r = traits_type::compare(data() + __pos1, __s, _VSTD::min(__rlen, __n2));
3431 if (__r == 0)
3432 {
3433 if (__rlen < __n2)
3434 __r = -1;
3435 else if (__rlen > __n2)
3436 __r = 1;
3437 }
3438 return __r;
3439}
3440
3441template <class _CharT, class _Traits, class _Allocator>
3442inline _LIBCPP_INLINE_VISIBILITY
3443int
3444basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1,
3445 size_type __n1,
3446 __self_view __sv) const
3447{
3448 return compare(__pos1, __n1, __sv.data(), __sv.size());
3449}
3450
3451template <class _CharT, class _Traits, class _Allocator>
3452inline _LIBCPP_INLINE_VISIBILITY
3453int
3454basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1,
3455 size_type __n1,
3456 const basic_string& __str) const
3457{
3458 return compare(__pos1, __n1, __str.data(), __str.size());
3459}
3460
3461template <class _CharT, class _Traits, class _Allocator>
3462template <class _Tp>
3463typename enable_if
3464<
3465 __can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value,
3466 int
3467>::type
3468basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1,
3469 size_type __n1,
3470 const _Tp& __t,
3471 size_type __pos2,
3472 size_type __n2) const
3473{
3474 __self_view __sv = __t;
3475 return __self_view(*this).substr(__pos1, __n1).compare(__sv.substr(__pos2, __n2));
3476}
3477
3478template <class _CharT, class _Traits, class _Allocator>
3479int
3480basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1,
3481 size_type __n1,
3482 const basic_string& __str,
3483 size_type __pos2,
3484 size_type __n2) const
3485{
3486 return compare(__pos1, __n1, __self_view(__str), __pos2, __n2);
3487}
3488
3489template <class _CharT, class _Traits, class _Allocator>
3490int
3491basic_string<_CharT, _Traits, _Allocator>::compare(const value_type* __s) const _NOEXCEPT
3492{
3493 _LIBCPP_ASSERT(__s != nullptr, "string::compare(): received nullptr");
3494 return compare(0, npos, __s, traits_type::length(__s));
3495}
3496
3497template <class _CharT, class _Traits, class _Allocator>
3498int
3499basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1,
3500 size_type __n1,
3501 const value_type* __s) const
3502{
3503 _LIBCPP_ASSERT(__s != nullptr, "string::compare(): received nullptr");
3504 return compare(__pos1, __n1, __s, traits_type::length(__s));
3505}
3506
3507// __invariants
3508
3509template<class _CharT, class _Traits, class _Allocator>
3510inline _LIBCPP_INLINE_VISIBILITY
3511bool
3512basic_string<_CharT, _Traits, _Allocator>::__invariants() const
3513{
3514 if (size() > capacity())
3515 return false;
3516 if (capacity() < __min_cap - 1)
3517 return false;
3518 if (data() == 0)
3519 return false;
3520 if (data()[size()] != value_type(0))
3521 return false;
3522 return true;
3523}
3524
3525// operator==
3526
3527template<class _CharT, class _Traits, class _Allocator>
3528inline _LIBCPP_INLINE_VISIBILITY
3529bool
3530operator==(const basic_string<_CharT, _Traits, _Allocator>& __lhs,
3531 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT
3532{
3533 size_t __lhs_sz = __lhs.size();
3534 return __lhs_sz == __rhs.size() && _Traits::compare(__lhs.data(),
3535 __rhs.data(),
3536 __lhs_sz) == 0;
3537}
3538
3539template<class _Allocator>
3540inline _LIBCPP_INLINE_VISIBILITY
3541bool
3542operator==(const basic_string<char, char_traits<char>, _Allocator>& __lhs,
3543 const basic_string<char, char_traits<char>, _Allocator>& __rhs) _NOEXCEPT
3544{
3545 size_t __lhs_sz = __lhs.size();
3546 if (__lhs_sz != __rhs.size())
3547 return false;
3548 const char* __lp = __lhs.data();
3549 const char* __rp = __rhs.data();
3550 if (__lhs.__is_long())
3551 return char_traits<char>::compare(__lp, __rp, __lhs_sz) == 0;
3552 for (; __lhs_sz != 0; --__lhs_sz, ++__lp, ++__rp)
3553 if (*__lp != *__rp)
3554 return false;
3555 return true;
3556}
3557
3558template<class _CharT, class _Traits, class _Allocator>
3559inline _LIBCPP_INLINE_VISIBILITY
3560bool
3561operator==(const _CharT* __lhs,
3562 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT
3563{
3564 typedef basic_string<_CharT, _Traits, _Allocator> _String;
3565 _LIBCPP_ASSERT(__lhs != nullptr, "operator==(char*, basic_string): received nullptr");
3566 size_t __lhs_len = _Traits::length(__lhs);
3567 if (__lhs_len != __rhs.size()) return false;
3568 return __rhs.compare(0, _String::npos, __lhs, __lhs_len) == 0;
3569}
3570
3571template<class _CharT, class _Traits, class _Allocator>
3572inline _LIBCPP_INLINE_VISIBILITY
3573bool
3574operator==(const basic_string<_CharT,_Traits,_Allocator>& __lhs,
3575 const _CharT* __rhs) _NOEXCEPT
3576{
3577 typedef basic_string<_CharT, _Traits, _Allocator> _String;
3578 _LIBCPP_ASSERT(__rhs != nullptr, "operator==(basic_string, char*): received nullptr");
3579 size_t __rhs_len = _Traits::length(__rhs);
3580 if (__rhs_len != __lhs.size()) return false;
3581 return __lhs.compare(0, _String::npos, __rhs, __rhs_len) == 0;
3582}
3583
3584template<class _CharT, class _Traits, class _Allocator>
3585inline _LIBCPP_INLINE_VISIBILITY
3586bool
3587operator!=(const basic_string<_CharT,_Traits,_Allocator>& __lhs,
3588 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT
3589{
3590 return !(__lhs == __rhs);
3591}
3592
3593template<class _CharT, class _Traits, class _Allocator>
3594inline _LIBCPP_INLINE_VISIBILITY
3595bool
3596operator!=(const _CharT* __lhs,
3597 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT
3598{
3599 return !(__lhs == __rhs);
3600}
3601
3602template<class _CharT, class _Traits, class _Allocator>
3603inline _LIBCPP_INLINE_VISIBILITY
3604bool
3605operator!=(const basic_string<_CharT, _Traits, _Allocator>& __lhs,
3606 const _CharT* __rhs) _NOEXCEPT
3607{
3608 return !(__lhs == __rhs);
3609}
3610
3611// operator<
3612
3613template<class _CharT, class _Traits, class _Allocator>
3614inline _LIBCPP_INLINE_VISIBILITY
3615bool
3616operator< (const basic_string<_CharT, _Traits, _Allocator>& __lhs,
3617 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT
3618{
3619 return __lhs.compare(__rhs) < 0;
3620}
3621
3622template<class _CharT, class _Traits, class _Allocator>
3623inline _LIBCPP_INLINE_VISIBILITY
3624bool
3625operator< (const basic_string<_CharT, _Traits, _Allocator>& __lhs,
3626 const _CharT* __rhs) _NOEXCEPT
3627{
3628 return __lhs.compare(__rhs) < 0;
3629}
3630
3631template<class _CharT, class _Traits, class _Allocator>
3632inline _LIBCPP_INLINE_VISIBILITY
3633bool
3634operator< (const _CharT* __lhs,
3635 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT
3636{
3637 return __rhs.compare(__lhs) > 0;
3638}
3639
3640// operator>
3641
3642template<class _CharT, class _Traits, class _Allocator>
3643inline _LIBCPP_INLINE_VISIBILITY
3644bool
3645operator> (const basic_string<_CharT, _Traits, _Allocator>& __lhs,
3646 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT
3647{
3648 return __rhs < __lhs;
3649}
3650
3651template<class _CharT, class _Traits, class _Allocator>
3652inline _LIBCPP_INLINE_VISIBILITY
3653bool
3654operator> (const basic_string<_CharT, _Traits, _Allocator>& __lhs,
3655 const _CharT* __rhs) _NOEXCEPT
3656{
3657 return __rhs < __lhs;
3658}
3659
3660template<class _CharT, class _Traits, class _Allocator>
3661inline _LIBCPP_INLINE_VISIBILITY
3662bool
3663operator> (const _CharT* __lhs,
3664 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT
3665{
3666 return __rhs < __lhs;
3667}
3668
3669// operator<=
3670
3671template<class _CharT, class _Traits, class _Allocator>
3672inline _LIBCPP_INLINE_VISIBILITY
3673bool
3674operator<=(const basic_string<_CharT, _Traits, _Allocator>& __lhs,
3675 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT
3676{
3677 return !(__rhs < __lhs);
3678}
3679
3680template<class _CharT, class _Traits, class _Allocator>
3681inline _LIBCPP_INLINE_VISIBILITY
3682bool
3683operator<=(const basic_string<_CharT, _Traits, _Allocator>& __lhs,
3684 const _CharT* __rhs) _NOEXCEPT
3685{
3686 return !(__rhs < __lhs);
3687}
3688
3689template<class _CharT, class _Traits, class _Allocator>
3690inline _LIBCPP_INLINE_VISIBILITY
3691bool
3692operator<=(const _CharT* __lhs,
3693 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT
3694{
3695 return !(__rhs < __lhs);
3696}
3697
3698// operator>=
3699
3700template<class _CharT, class _Traits, class _Allocator>
3701inline _LIBCPP_INLINE_VISIBILITY
3702bool
3703operator>=(const basic_string<_CharT, _Traits, _Allocator>& __lhs,
3704 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT
3705{
3706 return !(__lhs < __rhs);
3707}
3708
3709template<class _CharT, class _Traits, class _Allocator>
3710inline _LIBCPP_INLINE_VISIBILITY
3711bool
3712operator>=(const basic_string<_CharT, _Traits, _Allocator>& __lhs,
3713 const _CharT* __rhs) _NOEXCEPT
3714{
3715 return !(__lhs < __rhs);
3716}
3717
3718template<class _CharT, class _Traits, class _Allocator>
3719inline _LIBCPP_INLINE_VISIBILITY
3720bool
3721operator>=(const _CharT* __lhs,
3722 const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT
3723{
3724 return !(__lhs < __rhs);
3725}
3726
3727// operator +
3728
3729template<class _CharT, class _Traits, class _Allocator>
3730basic_string<_CharT, _Traits, _Allocator>
3731operator+(const basic_string<_CharT, _Traits, _Allocator>& __lhs,
3732 const basic_string<_CharT, _Traits, _Allocator>& __rhs)
3733{
3734 basic_string<_CharT, _Traits, _Allocator> __r(__lhs.get_allocator());
3735 typename basic_string<_CharT, _Traits, _Allocator>::size_type __lhs_sz = __lhs.size();
3736 typename basic_string<_CharT, _Traits, _Allocator>::size_type __rhs_sz = __rhs.size();
3737 __r.__init(__lhs.data(), __lhs_sz, __lhs_sz + __rhs_sz);
3738 __r.append(__rhs.data(), __rhs_sz);
3739 return __r;
3740}
3741
3742template<class _CharT, class _Traits, class _Allocator>
3743basic_string<_CharT, _Traits, _Allocator>
3744operator+(const _CharT* __lhs , const basic_string<_CharT,_Traits,_Allocator>& __rhs)
3745{
3746 basic_string<_CharT, _Traits, _Allocator> __r(__rhs.get_allocator());
3747 typename basic_string<_CharT, _Traits, _Allocator>::size_type __lhs_sz = _Traits::length(__lhs);
3748 typename basic_string<_CharT, _Traits, _Allocator>::size_type __rhs_sz = __rhs.size();
3749 __r.__init(__lhs, __lhs_sz, __lhs_sz + __rhs_sz);
3750 __r.append(__rhs.data(), __rhs_sz);
3751 return __r;
3752}
3753
3754template<class _CharT, class _Traits, class _Allocator>
3755basic_string<_CharT, _Traits, _Allocator>
3756operator+(_CharT __lhs, const basic_string<_CharT,_Traits,_Allocator>& __rhs)
3757{
3758 basic_string<_CharT, _Traits, _Allocator> __r(__rhs.get_allocator());
3759 typename basic_string<_CharT, _Traits, _Allocator>::size_type __rhs_sz = __rhs.size();
3760 __r.__init(&__lhs, 1, 1 + __rhs_sz);
3761 __r.append(__rhs.data(), __rhs_sz);
3762 return __r;
3763}
3764
3765template<class _CharT, class _Traits, class _Allocator>
3766basic_string<_CharT, _Traits, _Allocator>
3767operator+(const basic_string<_CharT, _Traits, _Allocator>& __lhs, const _CharT* __rhs)
3768{
3769 basic_string<_CharT, _Traits, _Allocator> __r(__lhs.get_allocator());
3770 typename basic_string<_CharT, _Traits, _Allocator>::size_type __lhs_sz = __lhs.size();
3771 typename basic_string<_CharT, _Traits, _Allocator>::size_type __rhs_sz = _Traits::length(__rhs);
3772 __r.__init(__lhs.data(), __lhs_sz, __lhs_sz + __rhs_sz);
3773 __r.append(__rhs, __rhs_sz);
3774 return __r;
3775}
3776
3777template<class _CharT, class _Traits, class _Allocator>
3778basic_string<_CharT, _Traits, _Allocator>
3779operator+(const basic_string<_CharT, _Traits, _Allocator>& __lhs, _CharT __rhs)
3780{
3781 basic_string<_CharT, _Traits, _Allocator> __r(__lhs.get_allocator());
3782 typename basic_string<_CharT, _Traits, _Allocator>::size_type __lhs_sz = __lhs.size();
3783 __r.__init(__lhs.data(), __lhs_sz, __lhs_sz + 1);
3784 __r.push_back(__rhs);
3785 return __r;
3786}
3787
3788#ifndef _LIBCPP_CXX03_LANG
3789
3790template<class _CharT, class _Traits, class _Allocator>
3791inline _LIBCPP_INLINE_VISIBILITY
3792basic_string<_CharT, _Traits, _Allocator>
3793operator+(basic_string<_CharT, _Traits, _Allocator>&& __lhs, const basic_string<_CharT, _Traits, _Allocator>& __rhs)
3794{
3795 return _VSTD::move(__lhs.append(__rhs));
3796}
3797
3798template<class _CharT, class _Traits, class _Allocator>
3799inline _LIBCPP_INLINE_VISIBILITY
3800basic_string<_CharT, _Traits, _Allocator>
3801operator+(const basic_string<_CharT, _Traits, _Allocator>& __lhs, basic_string<_CharT, _Traits, _Allocator>&& __rhs)
3802{
3803 return _VSTD::move(__rhs.insert(0, __lhs));
3804}
3805
3806template<class _CharT, class _Traits, class _Allocator>
3807inline _LIBCPP_INLINE_VISIBILITY
3808basic_string<_CharT, _Traits, _Allocator>
3809operator+(basic_string<_CharT, _Traits, _Allocator>&& __lhs, basic_string<_CharT, _Traits, _Allocator>&& __rhs)
3810{
3811 return _VSTD::move(__lhs.append(__rhs));
3812}
3813
3814template<class _CharT, class _Traits, class _Allocator>
3815inline _LIBCPP_INLINE_VISIBILITY
3816basic_string<_CharT, _Traits, _Allocator>
3817operator+(const _CharT* __lhs , basic_string<_CharT,_Traits,_Allocator>&& __rhs)
3818{
3819 return _VSTD::move(__rhs.insert(0, __lhs));
3820}
3821
3822template<class _CharT, class _Traits, class _Allocator>
3823inline _LIBCPP_INLINE_VISIBILITY
3824basic_string<_CharT, _Traits, _Allocator>
3825operator+(_CharT __lhs, basic_string<_CharT,_Traits,_Allocator>&& __rhs)
3826{
3827 __rhs.insert(__rhs.begin(), __lhs);
3828 return _VSTD::move(__rhs);
3829}
3830
3831template<class _CharT, class _Traits, class _Allocator>
3832inline _LIBCPP_INLINE_VISIBILITY
3833basic_string<_CharT, _Traits, _Allocator>
3834operator+(basic_string<_CharT, _Traits, _Allocator>&& __lhs, const _CharT* __rhs)
3835{
3836 return _VSTD::move(__lhs.append(__rhs));
3837}
3838
3839template<class _CharT, class _Traits, class _Allocator>
3840inline _LIBCPP_INLINE_VISIBILITY
3841basic_string<_CharT, _Traits, _Allocator>
3842operator+(basic_string<_CharT, _Traits, _Allocator>&& __lhs, _CharT __rhs)
3843{
3844 __lhs.push_back(__rhs);
3845 return _VSTD::move(__lhs);
3846}
3847
3848#endif // _LIBCPP_CXX03_LANG
3849
3850// swap
3851
3852template<class _CharT, class _Traits, class _Allocator>
3853inline _LIBCPP_INLINE_VISIBILITY
3854void
3855swap(basic_string<_CharT, _Traits, _Allocator>& __lhs,
3856 basic_string<_CharT, _Traits, _Allocator>& __rhs)
3857 _NOEXCEPT_(_NOEXCEPT_(__lhs.swap(__rhs)))
3858{
3859 __lhs.swap(__rhs);
3860}
3861
3862#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
3863
3864typedef basic_string<char16_t> u16string;
3865typedef basic_string<char32_t> u32string;
3866
3867#endif // _LIBCPP_HAS_NO_UNICODE_CHARS
3868
3869_LIBCPP_FUNC_VIS int stoi (const string& __str, size_t* __idx = 0, int __base = 10);
3870_LIBCPP_FUNC_VIS long stol (const string& __str, size_t* __idx = 0, int __base = 10);
3871_LIBCPP_FUNC_VIS unsigned long stoul (const string& __str, size_t* __idx = 0, int __base = 10);
3872_LIBCPP_FUNC_VIS long long stoll (const string& __str, size_t* __idx = 0, int __base = 10);
3873_LIBCPP_FUNC_VIS unsigned long long stoull(const string& __str, size_t* __idx = 0, int __base = 10);
3874
3875_LIBCPP_FUNC_VIS float stof (const string& __str, size_t* __idx = 0);
3876_LIBCPP_FUNC_VIS double stod (const string& __str, size_t* __idx = 0);
3877_LIBCPP_FUNC_VIS long double stold(const string& __str, size_t* __idx = 0);
3878
3879_LIBCPP_FUNC_VIS string to_string(int __val);
3880_LIBCPP_FUNC_VIS string to_string(unsigned __val);
3881_LIBCPP_FUNC_VIS string to_string(long __val);
3882_LIBCPP_FUNC_VIS string to_string(unsigned long __val);
3883_LIBCPP_FUNC_VIS string to_string(long long __val);
3884_LIBCPP_FUNC_VIS string to_string(unsigned long long __val);
3885_LIBCPP_FUNC_VIS string to_string(float __val);
3886_LIBCPP_FUNC_VIS string to_string(double __val);
3887_LIBCPP_FUNC_VIS string to_string(long double __val);
3888
3889_LIBCPP_FUNC_VIS int stoi (const wstring& __str, size_t* __idx = 0, int __base = 10);
3890_LIBCPP_FUNC_VIS long stol (const wstring& __str, size_t* __idx = 0, int __base = 10);
3891_LIBCPP_FUNC_VIS unsigned long stoul (const wstring& __str, size_t* __idx = 0, int __base = 10);
3892_LIBCPP_FUNC_VIS long long stoll (const wstring& __str, size_t* __idx = 0, int __base = 10);
3893_LIBCPP_FUNC_VIS unsigned long long stoull(const wstring& __str, size_t* __idx = 0, int __base = 10);
3894
3895_LIBCPP_FUNC_VIS float stof (const wstring& __str, size_t* __idx = 0);
3896_LIBCPP_FUNC_VIS double stod (const wstring& __str, size_t* __idx = 0);
3897_LIBCPP_FUNC_VIS long double stold(const wstring& __str, size_t* __idx = 0);
3898
3899_LIBCPP_FUNC_VIS wstring to_wstring(int __val);
3900_LIBCPP_FUNC_VIS wstring to_wstring(unsigned __val);
3901_LIBCPP_FUNC_VIS wstring to_wstring(long __val);
3902_LIBCPP_FUNC_VIS wstring to_wstring(unsigned long __val);
3903_LIBCPP_FUNC_VIS wstring to_wstring(long long __val);
3904_LIBCPP_FUNC_VIS wstring to_wstring(unsigned long long __val);
3905_LIBCPP_FUNC_VIS wstring to_wstring(float __val);
3906_LIBCPP_FUNC_VIS wstring to_wstring(double __val);
3907_LIBCPP_FUNC_VIS wstring to_wstring(long double __val);
3908
3909template<class _CharT, class _Traits, class _Allocator>
3910 const typename basic_string<_CharT, _Traits, _Allocator>::size_type
3911 basic_string<_CharT, _Traits, _Allocator>::npos;
3912
3913template<class _CharT, class _Traits, class _Allocator>
3914struct _LIBCPP_TEMPLATE_VIS hash<basic_string<_CharT, _Traits, _Allocator> >
3915 : public unary_function<basic_string<_CharT, _Traits, _Allocator>, size_t>
3916{
3917 size_t
3918 operator()(const basic_string<_CharT, _Traits, _Allocator>& __val) const _NOEXCEPT;
3919};
3920
3921template<class _CharT, class _Traits, class _Allocator>
3922size_t
3923hash<basic_string<_CharT, _Traits, _Allocator> >::operator()(
3924 const basic_string<_CharT, _Traits, _Allocator>& __val) const _NOEXCEPT
3925{
3926 return __do_string_hash(__val.data(), __val.data() + __val.size());
3927}
3928
3929template<class _CharT, class _Traits, class _Allocator>
3930basic_ostream<_CharT, _Traits>&
3931operator<<(basic_ostream<_CharT, _Traits>& __os,
3932 const basic_string<_CharT, _Traits, _Allocator>& __str);
3933
3934template<class _CharT, class _Traits, class _Allocator>
3935basic_istream<_CharT, _Traits>&
3936operator>>(basic_istream<_CharT, _Traits>& __is,
3937 basic_string<_CharT, _Traits, _Allocator>& __str);
3938
3939template<class _CharT, class _Traits, class _Allocator>
3940basic_istream<_CharT, _Traits>&
3941getline(basic_istream<_CharT, _Traits>& __is,
3942 basic_string<_CharT, _Traits, _Allocator>& __str, _CharT __dlm);
3943
3944template<class _CharT, class _Traits, class _Allocator>
3945inline _LIBCPP_INLINE_VISIBILITY
3946basic_istream<_CharT, _Traits>&
3947getline(basic_istream<_CharT, _Traits>& __is,
3948 basic_string<_CharT, _Traits, _Allocator>& __str);
3949
3950#ifndef _LIBCPP_CXX03_LANG
3951
3952template<class _CharT, class _Traits, class _Allocator>
3953inline _LIBCPP_INLINE_VISIBILITY
3954basic_istream<_CharT, _Traits>&
3955getline(basic_istream<_CharT, _Traits>&& __is,
3956 basic_string<_CharT, _Traits, _Allocator>& __str, _CharT __dlm);
3957
3958template<class _CharT, class _Traits, class _Allocator>
3959inline _LIBCPP_INLINE_VISIBILITY
3960basic_istream<_CharT, _Traits>&
3961getline(basic_istream<_CharT, _Traits>&& __is,
3962 basic_string<_CharT, _Traits, _Allocator>& __str);
3963
3964#endif // _LIBCPP_CXX03_LANG
3965
3966#if _LIBCPP_DEBUG_LEVEL >= 2
3967
3968template<class _CharT, class _Traits, class _Allocator>
3969bool
3970basic_string<_CharT, _Traits, _Allocator>::__dereferenceable(const const_iterator* __i) const
3971{
3972 return this->data() <= _VSTD::__to_raw_pointer(__i->base()) &&
3973 _VSTD::__to_raw_pointer(__i->base()) < this->data() + this->size();
3974}
3975
3976template<class _CharT, class _Traits, class _Allocator>
3977bool
3978basic_string<_CharT, _Traits, _Allocator>::__decrementable(const const_iterator* __i) const
3979{
3980 return this->data() < _VSTD::__to_raw_pointer(__i->base()) &&
3981 _VSTD::__to_raw_pointer(__i->base()) <= this->data() + this->size();
3982}
3983
3984template<class _CharT, class _Traits, class _Allocator>
3985bool
3986basic_string<_CharT, _Traits, _Allocator>::__addable(const const_iterator* __i, ptrdiff_t __n) const
3987{
3988 const value_type* __p = _VSTD::__to_raw_pointer(__i->base()) + __n;
3989 return this->data() <= __p && __p <= this->data() + this->size();
3990}
3991
3992template<class _CharT, class _Traits, class _Allocator>
3993bool
3994basic_string<_CharT, _Traits, _Allocator>::__subscriptable(const const_iterator* __i, ptrdiff_t __n) const
3995{
3996 const value_type* __p = _VSTD::__to_raw_pointer(__i->base()) + __n;
3997 return this->data() <= __p && __p < this->data() + this->size();
3998}
3999
4000#endif // _LIBCPP_DEBUG_LEVEL >= 2
4001
4002_LIBCPP_EXTERN_TEMPLATE(class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_string<char>)
4003_LIBCPP_EXTERN_TEMPLATE(class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_string<wchar_t>)
4004
4005#if _LIBCPP_STD_VER > 11
4006// Literal suffixes for basic_string [basic.string.literals]
4007inline namespace literals
4008{
4009 inline namespace string_literals
4010 {
4011 inline _LIBCPP_INLINE_VISIBILITY
4012 basic_string<char> operator "" s( const char *__str, size_t __len )
4013 {
4014 return basic_string<char> (__str, __len);
4015 }
4016
4017 inline _LIBCPP_INLINE_VISIBILITY
4018 basic_string<wchar_t> operator "" s( const wchar_t *__str, size_t __len )
4019 {
4020 return basic_string<wchar_t> (__str, __len);
4021 }
4022
4023 inline _LIBCPP_INLINE_VISIBILITY
4024 basic_string<char16_t> operator "" s( const char16_t *__str, size_t __len )
4025 {
4026 return basic_string<char16_t> (__str, __len);
4027 }
4028
4029 inline _LIBCPP_INLINE_VISIBILITY
4030 basic_string<char32_t> operator "" s( const char32_t *__str, size_t __len )
4031 {
4032 return basic_string<char32_t> (__str, __len);
4033 }
4034 }
4035}
4036#endif
4037
4038_LIBCPP_END_NAMESPACE_STD
4039
4040_LIBCPP_POP_MACROS
4041
4042#endif // _LIBCPP_STRING