2 //===----------------------------------------------------------------------===//
4 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
5 // See https://llvm.org/LICENSE.txt for license information.
6 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
8 //===----------------------------------------------------------------------===//
10 #ifndef _LIBCPP_SSTREAM
11 #define _LIBCPP_SSTREAM
16 sstream synopsis [sstream.syn]
18 // Class template basic_stringbuf [stringbuf]
19 template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
21 : public basic_streambuf<charT, traits>
24 typedef charT char_type;
25 typedef traits traits_type;
26 typedef typename traits_type::int_type int_type;
27 typedef typename traits_type::pos_type pos_type;
28 typedef typename traits_type::off_type off_type;
29 typedef Allocator allocator_type;
31 // [stringbuf.cons] constructors:
32 explicit basic_stringbuf(ios_base::openmode which = ios_base::in | ios_base::out); // before C++20
33 basic_stringbuf() : basic_stringbuf(ios_base::in | ios_base::out) {} // C++20
34 explicit basic_stringbuf(ios_base::openmode which); // C++20
35 explicit basic_stringbuf(const basic_string<char_type, traits_type, allocator_type>& s,
36 ios_base::openmode which = ios_base::in | ios_base::out);
37 explicit basic_stringbuf(const allocator_type& a)
38 : basic_stringbuf(ios_base::in | ios_base::out, a) {} // C++20
39 basic_stringbuf(ios_base::openmode which, const allocator_type& a); // C++20
40 explicit basic_stringbuf(basic_string<char_type, traits_type, allocator_type>&& s,
41 ios_base::openmode which = ios_base::in | ios_base::out); // C++20
42 template <class SAlloc>
43 basic_stringbuf(const basic_string<char_type, traits_type, SAlloc>& s, const allocator_type& a)
44 : basic_stringbuf(s, ios_base::in | ios_base::out, a) {} // C++20
45 template <class SAlloc>
46 basic_stringbuf(const basic_string<char_type, traits_type, SAlloc>& s,
47 ios_base::openmode which, const allocator_type& a); // C++20
48 template <class SAlloc>
49 explicit basic_stringbuf(const basic_string<char_type, traits_type, SAlloc>& s,
50 ios_base::openmode which = ios_base::in | ios_base::out); // C++20
52 explicit basic_stringbuf(const T& t,
53 ios_base::openmode which = ios_base::in | ios_base::out); // Since C++26
55 basic_stringbuf(const T& t, const Allocator& a); // Since C++26
57 basic_stringbuf(const T& t, ios_base::openmode which, const Allocator& a); // Since C++26
58 basic_stringbuf(const basic_stringbuf&) = delete;
59 basic_stringbuf(basic_stringbuf&& rhs);
60 basic_stringbuf(basic_stringbuf&& rhs, const allocator_type& a); // C++20
62 // [stringbuf.assign] Assign and swap:
63 basic_stringbuf& operator=(const basic_stringbuf&) = delete;
64 basic_stringbuf& operator=(basic_stringbuf&& rhs);
65 void swap(basic_stringbuf& rhs) noexcept(see below); // conditionally noexcept since C++20
67 // [stringbuf.members] Member functions:
68 allocator_type get_allocator() const noexcept; // C++20
69 basic_string<char_type, traits_type, allocator_type> str() const; // before C++20
70 basic_string<char_type, traits_type, allocator_type> str() const &; // C++20
71 template <class SAlloc>
72 basic_string<char_type, traits_type, SAlloc> str(const SAlloc& sa) const; // C++20
73 basic_string<char_type, traits_type, allocator_type> str() &&; // C++20
74 basic_string_view<char_type, traits_type> view() const noexcept; // C++20
75 void str(const basic_string<char_type, traits_type, allocator_type>& s);
76 template <class SAlloc>
77 void str(const basic_string<char_type, traits_type, SAlloc>& s); // C++20
78 void str(basic_string<char_type, traits_type, allocator_type>&& s); // C++20
80 void str(const T& t); // Since C++26
83 // [stringbuf.virtuals] Overridden virtual functions:
84 virtual int_type underflow();
85 virtual int_type pbackfail(int_type c = traits_type::eof());
86 virtual int_type overflow (int_type c = traits_type::eof());
87 virtual basic_streambuf<char_type, traits_type>* setbuf(char_type*, streamsize);
88 virtual pos_type seekoff(off_type off, ios_base::seekdir way,
89 ios_base::openmode which = ios_base::in | ios_base::out);
90 virtual pos_type seekpos(pos_type sp,
91 ios_base::openmode which = ios_base::in | ios_base::out);
94 // [stringbuf.assign] non member swap
95 template <class charT, class traits, class Allocator>
96 void swap(basic_stringbuf<charT, traits, Allocator>& x,
97 basic_stringbuf<charT, traits, Allocator>& y); // conditionally noexcept since C++20
99 typedef basic_stringbuf<char> stringbuf;
100 typedef basic_stringbuf<wchar_t> wstringbuf;
102 // Class template basic_istringstream [istringstream]
103 template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
104 class basic_istringstream
105 : public basic_istream<charT, traits>
108 typedef charT char_type;
109 typedef traits traits_type;
110 typedef typename traits_type::int_type int_type;
111 typedef typename traits_type::pos_type pos_type;
112 typedef typename traits_type::off_type off_type;
113 typedef Allocator allocator_type;
115 // [istringstream.cons] Constructors:
116 explicit basic_istringstream(ios_base::openmode which = ios_base::in); // before C++20
117 basic_istringstream() : basic_istringstream(ios_base::in) {} // C++20
118 explicit basic_istringstream(ios_base::openmode which); // C++20
119 explicit basic_istringstream(const basic_string<char_type, traits_type, allocator_type>& s,
120 ios_base::openmode which = ios_base::in);
121 basic_istringstream(ios_base::openmode which, const allocator_type& a); // C++20
122 explicit basic_istringstream(basic_string<char_type, traits_type, allocator_type>&& s,
123 ios_base::openmode which = ios_base::in); // C++20
124 template <class SAlloc>
125 basic_istringstream(const basic_string<char_type, traits_type, SAlloc>& s, const allocator_type& a)
126 : basic_istringstream(s, ios_base::in, a) {} // C++20
127 template <class SAlloc>
128 basic_istringstream(const basic_string<char_type, traits_type, SAlloc>& s,
129 ios_base::openmode which, const allocator_type& a); // C++20
130 template <class SAlloc>
131 explicit basic_istringstream(const basic_string<char_type, traits_type, SAlloc>& s,
132 ios_base::openmode which = ios_base::in); // C++20
134 explicit basic_istringstream(const T& t, ios_base::openmode which = ios_base::in); // Since C++26
136 basic_istringstream(const T& t, const Allocator& a); // Since C++26
138 basic_istringstream(const T& t, ios_base::openmode which, const Allocator& a); // Since C++26
139 basic_istringstream(const basic_istringstream&) = delete;
140 basic_istringstream(basic_istringstream&& rhs);
142 // [istringstream.assign] Assign and swap:
143 basic_istringstream& operator=(const basic_istringstream&) = delete;
144 basic_istringstream& operator=(basic_istringstream&& rhs);
145 void swap(basic_istringstream& rhs);
147 // [istringstream.members] Member functions:
148 basic_stringbuf<char_type, traits_type, allocator_type>* rdbuf() const;
149 basic_string<char_type, traits_type, allocator_type> str() const; // before C++20
150 basic_string<char_type, traits_type, allocator_type> str() const &; // C++20
151 template <class SAlloc>
152 basic_string<char_type, traits_type, SAlloc> str(const SAlloc& sa) const; // C++20
153 basic_string<char_type, traits_type, allocator_type> str() &&; // C++20
154 basic_string_view<char_type, traits_type> view() const noexcept; // C++20
155 void str(const basic_string<char_type, traits_type, allocator_type>& s);
156 template <class SAlloc>
157 void str(const basic_string<char_type, traits_type, SAlloc>& s); // C++20
158 void str(basic_string<char_type, traits_type, allocator_type>&& s); // C++20
160 void str(const T& t); // Since C++26
163 template <class charT, class traits, class Allocator>
164 void swap(basic_istringstream<charT, traits, Allocator>& x,
165 basic_istringstream<charT, traits, Allocator>& y);
167 typedef basic_istringstream<char> istringstream;
168 typedef basic_istringstream<wchar_t> wistringstream;
170 // Class template basic_ostringstream [ostringstream]
171 template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
172 class basic_ostringstream
173 : public basic_ostream<charT, traits>
177 typedef charT char_type;
178 typedef traits traits_type;
179 typedef typename traits_type::int_type int_type;
180 typedef typename traits_type::pos_type pos_type;
181 typedef typename traits_type::off_type off_type;
182 typedef Allocator allocator_type;
184 // [ostringstream.cons] Constructors:
185 explicit basic_ostringstream(ios_base::openmode which = ios_base::out); // before C++20
186 basic_ostringstream() : basic_ostringstream(ios_base::out) {} // C++20
187 explicit basic_ostringstream(ios_base::openmode which); // C++20
188 explicit basic_ostringstream(const basic_string<char_type, traits_type, allocator_type>& s,
189 ios_base::openmode which = ios_base::out);
190 basic_ostringstream(ios_base::openmode which, const allocator_type& a); // C++20
191 explicit basic_ostringstream(basic_string<char_type, traits_type, allocator_type>&& s,
192 ios_base::openmode which = ios_base::out); // C++20
193 template <class SAlloc>
194 basic_ostringstream(const basic_string<char_type, traits_type, SAlloc>& s, const allocator_type& a)
195 : basic_ostringstream(s, ios_base::out, a) {} // C++20
196 template <class SAlloc>
197 basic_ostringstream(const basic_string<char_type, traits_type, SAlloc>& s,
198 ios_base::openmode which, const allocator_type& a); // C++20
199 template <class SAlloc>
200 explicit basic_ostringstream(const basic_string<char_type, traits_type, SAlloc>& s,
201 ios_base::openmode which = ios_base::out); // C++20
203 explicit basic_ostringstream(const T& t, ios_base::openmode which = ios_base::out); // Since C++26
205 basic_ostringstream(const T& t, const Allocator& a); // Since C++26
207 basic_ostringstream(const T& t, ios_base::openmode which, const Allocator& a); // Since C++26
208 basic_ostringstream(const basic_ostringstream&) = delete;
209 basic_ostringstream(basic_ostringstream&& rhs);
211 // [ostringstream.assign] Assign and swap:
212 basic_ostringstream& operator=(const basic_ostringstream&) = delete;
213 basic_ostringstream& operator=(basic_ostringstream&& rhs);
214 void swap(basic_ostringstream& rhs);
216 // [ostringstream.members] Member functions:
217 basic_stringbuf<char_type, traits_type, allocator_type>* rdbuf() const;
218 basic_string<char_type, traits_type, allocator_type> str() const; // before C++20
219 basic_string<char_type, traits_type, allocator_type> str() const &; // C++20
220 template <class SAlloc>
221 basic_string<char_type, traits_type, SAlloc> str(const SAlloc& sa) const; // C++20
222 basic_string<char_type, traits_type, allocator_type> str() &&; // C++20
223 basic_string_view<char_type, traits_type> view() const noexcept; // C++20
224 void str(const basic_string<char_type, traits_type, allocator_type>& s);
225 template <class SAlloc>
226 void str(const basic_string<char_type, traits_type, SAlloc>& s); // C++20
227 void str(basic_string<char_type, traits_type, allocator_type>&& s); // C++20
229 void str(const T& t); // Since C++26
232 template <class charT, class traits, class Allocator>
233 void swap(basic_ostringstream<charT, traits, Allocator>& x,
234 basic_ostringstream<charT, traits, Allocator>& y);
236 typedef basic_ostringstream<char> ostringstream;
237 typedef basic_ostringstream<wchar_t> wostringstream;
239 // Class template basic_stringstream [stringstream]
240 template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
241 class basic_stringstream
242 : public basic_iostream<charT, traits>
246 typedef charT char_type;
247 typedef traits traits_type;
248 typedef typename traits_type::int_type int_type;
249 typedef typename traits_type::pos_type pos_type;
250 typedef typename traits_type::off_type off_type;
251 typedef Allocator allocator_type;
253 // [stringstream.cons] constructors
254 explicit basic_stringstream(ios_base::openmode which = ios_base::out | ios_base::in); // before C++20
255 basic_stringstream() : basic_stringstream(ios_base::out | ios_base::in) {} // C++20
256 explicit basic_stringstream(ios_base::openmode which); // C++20
257 explicit basic_stringstream(const basic_string<char_type, traits_type, allocator_type>& s,
258 ios_base::openmode which = ios_base::out | ios_base::in);
259 basic_stringstream(ios_base::openmode which, const allocator_type& a); // C++20
260 explicit basic_stringstream(basic_string<char_type, traits_type, allocator_type>&& s,
261 ios_base::openmode which = ios_base::out | ios_base::in); // C++20
262 template <class SAlloc>
263 basic_stringstream(const basic_string<char_type, traits_type, SAlloc>& s, const allocator_type& a)
264 : basic_stringstream(s, ios_base::out | ios_base::in, a) {} // C++20
265 template <class SAlloc>
266 basic_stringstream(const basic_string<char_type, traits_type, SAlloc>& s,
267 ios_base::openmode which, const allocator_type& a); // C++20
268 template <class SAlloc>
269 explicit basic_stringstream(const basic_string<char_type, traits_type, SAlloc>& s,
270 ios_base::openmode which = ios_base::out | ios_base::in); // C++20
272 explicit basic_stringstream(const T& t,
273 ios_base::openmode which = ios_base::out | ios_base::in); // Since C++26
275 basic_stringstream(const T& t, const Allocator& a); // Since C++26
277 basic_stringstream(const T& t, ios_base::openmode which, const Allocator& a); // Since C++26
278 basic_stringstream(const basic_stringstream&) = delete;
279 basic_stringstream(basic_stringstream&& rhs);
281 // [stringstream.assign] Assign and swap:
282 basic_stringstream& operator=(const basic_stringstream&) = delete;
283 basic_stringstream& operator=(basic_stringstream&& rhs);
284 void swap(basic_stringstream& rhs);
286 // [stringstream.members] Member functions:
287 basic_stringbuf<char_type, traits_type, allocator_type>* rdbuf() const;
288 basic_string<char_type, traits_type, allocator_type> str() const; // before C++20
289 basic_string<char_type, traits_type, allocator_type> str() const &; // C++20
290 template <class SAlloc>
291 basic_string<char_type, traits_type, SAlloc> str(const SAlloc& sa) const; // C++20
292 basic_string<char_type, traits_type, allocator_type> str() &&; // C++20
293 basic_string_view<char_type, traits_type> view() const noexcept; // C++20
294 void str(const basic_string<char_type, traits_type, allocator_type>& s);
295 template <class SAlloc>
296 void str(const basic_string<char_type, traits_type, SAlloc>& s); // C++20
297 void str(basic_string<char_type, traits_type, allocator_type>&& s); // C++20
299 void str(const T& t); // Since C++26
302 template <class charT, class traits, class Allocator>
303 void swap(basic_stringstream<charT, traits, Allocator>& x,
304 basic_stringstream<charT, traits, Allocator>& y);
306 typedef basic_stringstream<char> stringstream;
307 typedef basic_stringstream<wchar_t> wstringstream;
315 #if __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
316 # include <__cxx03/sstream>
320 # if _LIBCPP_HAS_LOCALIZATION
322 # include <__fwd/sstream.h>
323 # include <__ostream/basic_ostream.h>
324 # include <__type_traits/is_convertible.h>
325 # include <__utility/swap.h>
330 # include <string_view>
333 # if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
334 # pragma GCC system_header
338 # include <__undef_macros>
340 _LIBCPP_BEGIN_NAMESPACE_STD
342 // Class template basic_stringbuf [stringbuf]
344 template <class _CharT, class _Traits, class _Allocator>
345 class _LIBCPP_TEMPLATE_VIS basic_stringbuf : public basic_streambuf<_CharT, _Traits> {
347 typedef _CharT char_type;
348 typedef _Traits traits_type;
349 typedef typename traits_type::int_type int_type;
350 typedef typename traits_type::pos_type pos_type;
351 typedef typename traits_type::off_type off_type;
352 typedef _Allocator allocator_type;
354 typedef basic_string<char_type, traits_type, allocator_type> string_type;
358 mutable char_type* __hm_;
359 ios_base::openmode __mode_;
360 _LIBCPP_HIDE_FROM_ABI void __init_buf_ptrs();
361 _LIBCPP_HIDE_FROM_ABI void __move_init(basic_stringbuf&& __rhs);
364 // [stringbuf.cons] constructors:
365 _LIBCPP_HIDE_FROM_ABI basic_stringbuf() : __hm_(nullptr), __mode_(ios_base::in | ios_base::out) {
366 // it is implementation-defined whether we initialize eback() & friends to nullptr, and libc++ doesn't
370 _LIBCPP_HIDE_FROM_ABI explicit basic_stringbuf(ios_base::openmode __wch) : __hm_(nullptr), __mode_(__wch) {
371 // it is implementation-defined whether we initialize eback() & friends to nullptr, and libc++ doesn't
375 _LIBCPP_HIDE_FROM_ABI explicit basic_stringbuf(const string_type& __s,
376 ios_base::openmode __wch = ios_base::in | ios_base::out)
377 : __str_(__s.get_allocator()), __hm_(nullptr), __mode_(__wch) {
381 # if _LIBCPP_STD_VER >= 20
382 _LIBCPP_HIDE_FROM_ABI explicit basic_stringbuf(const allocator_type& __a)
383 : basic_stringbuf(ios_base::in | ios_base::out, __a) {}
385 _LIBCPP_HIDE_FROM_ABI basic_stringbuf(ios_base::openmode __wch, const allocator_type& __a)
386 : __str_(__a), __hm_(nullptr), __mode_(__wch) {
390 _LIBCPP_HIDE_FROM_ABI explicit basic_stringbuf(string_type&& __s,
391 ios_base::openmode __wch = ios_base::in | ios_base::out)
392 : __str_(std::move(__s)), __hm_(nullptr), __mode_(__wch) {
396 template <class _SAlloc>
397 _LIBCPP_HIDE_FROM_ABI
398 basic_stringbuf(const basic_string<char_type, traits_type, _SAlloc>& __s, const allocator_type& __a)
399 : basic_stringbuf(__s, ios_base::in | ios_base::out, __a) {}
401 template <class _SAlloc>
402 _LIBCPP_HIDE_FROM_ABI basic_stringbuf(
403 const basic_string<char_type, traits_type, _SAlloc>& __s, ios_base::openmode __wch, const allocator_type& __a)
404 : __str_(__s, __a), __hm_(nullptr), __mode_(__wch) {
408 template <class _SAlloc>
409 requires(!is_same_v<_SAlloc, allocator_type>)
410 _LIBCPP_HIDE_FROM_ABI explicit basic_stringbuf(const basic_string<char_type, traits_type, _SAlloc>& __s,
411 ios_base::openmode __wch = ios_base::in | ios_base::out)
412 : __str_(__s), __hm_(nullptr), __mode_(__wch) {
415 # endif // _LIBCPP_STD_VER >= 20
417 # if _LIBCPP_STD_VER >= 26
420 requires is_convertible_v<const _Tp&, basic_string_view<_CharT, _Traits>>
421 _LIBCPP_HIDE_FROM_ABI explicit basic_stringbuf(const _Tp& __t,
422 ios_base::openmode __which = ios_base::in | ios_base::out)
423 : basic_stringbuf(__t, __which, _Allocator()) {}
426 requires is_convertible_v<const _Tp&, basic_string_view<_CharT, _Traits>>
427 _LIBCPP_HIDE_FROM_ABI basic_stringbuf(const _Tp& __t, const _Allocator& __a)
428 : basic_stringbuf(__t, ios_base::in | ios_base::out, __a) {}
431 requires is_convertible_v<const _Tp&, basic_string_view<_CharT, _Traits>>
432 _LIBCPP_HIDE_FROM_ABI basic_stringbuf(const _Tp& __t, ios_base::openmode __which, const _Allocator& __a)
433 : __hm_(nullptr), __mode_(__which) {
434 basic_string_view<_CharT, _Traits> __sv = __t;
435 __str_ = string_type(__sv, __a);
439 # endif // _LIBCPP_STD_VER >= 26
441 basic_stringbuf(const basic_stringbuf&) = delete;
442 basic_stringbuf(basic_stringbuf&& __rhs) : __mode_(__rhs.__mode_) { __move_init(std::move(__rhs)); }
444 # if _LIBCPP_STD_VER >= 20
445 _LIBCPP_HIDE_FROM_ABI basic_stringbuf(basic_stringbuf&& __rhs, const allocator_type& __a)
446 : basic_stringbuf(__rhs.__mode_, __a) {
447 __move_init(std::move(__rhs));
451 // [stringbuf.assign] Assign and swap:
452 basic_stringbuf& operator=(const basic_stringbuf&) = delete;
453 basic_stringbuf& operator=(basic_stringbuf&& __rhs);
454 void swap(basic_stringbuf& __rhs)
455 # if _LIBCPP_STD_VER >= 20
456 noexcept(allocator_traits<allocator_type>::propagate_on_container_swap::value ||
457 allocator_traits<allocator_type>::is_always_equal::value)
461 // [stringbuf.members] Member functions:
463 # if _LIBCPP_STD_VER >= 20
464 _LIBCPP_HIDE_FROM_ABI allocator_type get_allocator() const noexcept { return __str_.get_allocator(); }
467 # if _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_BUILDING_LIBRARY)
468 string_type str() const;
470 _LIBCPP_HIDE_FROM_ABI string_type str() const& { return str(__str_.get_allocator()); }
472 _LIBCPP_HIDE_FROM_ABI string_type str() && {
473 const basic_string_view<_CharT, _Traits> __view = view();
474 typename string_type::size_type __pos = __view.empty() ? 0 : __view.data() - __str_.data();
475 // In C++23, this is just string_type(std::move(__str_), __pos, __view.size(), __str_.get_allocator());
476 // But we need something that works in C++20 also.
477 string_type __result(std::move(__str_), __str_.get_allocator());
478 __result.resize(__pos + __view.size());
479 __result.erase(0, __pos);
483 # endif // _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_BUILDING_LIBRARY)
485 # if _LIBCPP_STD_VER >= 20
486 template <class _SAlloc>
487 requires __is_allocator<_SAlloc>::value
488 _LIBCPP_HIDE_FROM_ABI basic_string<char_type, traits_type, _SAlloc> str(const _SAlloc& __sa) const {
489 return basic_string<_CharT, _Traits, _SAlloc>(view(), __sa);
492 _LIBCPP_HIDE_FROM_ABI basic_string_view<char_type, traits_type> view() const noexcept;
493 # endif // _LIBCPP_STD_VER >= 20
495 void str(const string_type& __s) {
500 # if _LIBCPP_STD_VER >= 20
501 template <class _SAlloc>
502 requires(!is_same_v<_SAlloc, allocator_type>)
503 _LIBCPP_HIDE_FROM_ABI void str(const basic_string<char_type, traits_type, _SAlloc>& __s) {
508 _LIBCPP_HIDE_FROM_ABI void str(string_type&& __s) {
509 __str_ = std::move(__s);
512 # endif // _LIBCPP_STD_VER >= 20
514 # if _LIBCPP_STD_VER >= 26
517 requires is_convertible_v<const _Tp&, basic_string_view<_CharT, _Traits>>
518 _LIBCPP_HIDE_FROM_ABI void str(const _Tp& __t) {
519 basic_string_view<_CharT, _Traits> __sv = __t;
524 # endif // _LIBCPP_STD_VER >= 26
527 // [stringbuf.virtuals] Overridden virtual functions:
528 int_type underflow() override;
529 int_type pbackfail(int_type __c = traits_type::eof()) override;
530 int_type overflow(int_type __c = traits_type::eof()) override;
532 seekoff(off_type __off, ios_base::seekdir __way, ios_base::openmode __wch = ios_base::in | ios_base::out) override;
533 _LIBCPP_HIDE_FROM_ABI_VIRTUAL
534 pos_type seekpos(pos_type __sp, ios_base::openmode __wch = ios_base::in | ios_base::out) override {
535 return seekoff(__sp, ios_base::beg, __wch);
539 template <class _CharT, class _Traits, class _Allocator>
540 _LIBCPP_HIDE_FROM_ABI void basic_stringbuf<_CharT, _Traits, _Allocator>::__move_init(basic_stringbuf&& __rhs) {
541 char_type* __p = const_cast<char_type*>(__rhs.__str_.data());
542 ptrdiff_t __binp = -1;
543 ptrdiff_t __ninp = -1;
544 ptrdiff_t __einp = -1;
545 if (__rhs.eback() != nullptr) {
546 __binp = __rhs.eback() - __p;
547 __ninp = __rhs.gptr() - __p;
548 __einp = __rhs.egptr() - __p;
550 ptrdiff_t __bout = -1;
551 ptrdiff_t __nout = -1;
552 ptrdiff_t __eout = -1;
553 if (__rhs.pbase() != nullptr) {
554 __bout = __rhs.pbase() - __p;
555 __nout = __rhs.pptr() - __p;
556 __eout = __rhs.epptr() - __p;
558 ptrdiff_t __hm = __rhs.__hm_ == nullptr ? -1 : __rhs.__hm_ - __p;
559 __str_ = std::move(__rhs.__str_);
560 __p = const_cast<char_type*>(__str_.data());
562 this->setg(__p + __binp, __p + __ninp, __p + __einp);
564 this->setp(__p + __bout, __p + __eout);
565 this->__pbump(__nout);
567 __hm_ = __hm == -1 ? nullptr : __p + __hm;
568 __p = const_cast<char_type*>(__rhs.__str_.data());
569 __rhs.setg(__p, __p, __p);
570 __rhs.setp(__p, __p);
572 this->pubimbue(__rhs.getloc());
575 template <class _CharT, class _Traits, class _Allocator>
576 basic_stringbuf<_CharT, _Traits, _Allocator>&
577 basic_stringbuf<_CharT, _Traits, _Allocator>::operator=(basic_stringbuf&& __rhs) {
578 char_type* __p = const_cast<char_type*>(__rhs.__str_.data());
579 ptrdiff_t __binp = -1;
580 ptrdiff_t __ninp = -1;
581 ptrdiff_t __einp = -1;
582 if (__rhs.eback() != nullptr) {
583 __binp = __rhs.eback() - __p;
584 __ninp = __rhs.gptr() - __p;
585 __einp = __rhs.egptr() - __p;
587 ptrdiff_t __bout = -1;
588 ptrdiff_t __nout = -1;
589 ptrdiff_t __eout = -1;
590 if (__rhs.pbase() != nullptr) {
591 __bout = __rhs.pbase() - __p;
592 __nout = __rhs.pptr() - __p;
593 __eout = __rhs.epptr() - __p;
595 ptrdiff_t __hm = __rhs.__hm_ == nullptr ? -1 : __rhs.__hm_ - __p;
596 __str_ = std::move(__rhs.__str_);
597 __p = const_cast<char_type*>(__str_.data());
599 this->setg(__p + __binp, __p + __ninp, __p + __einp);
601 this->setg(nullptr, nullptr, nullptr);
603 this->setp(__p + __bout, __p + __eout);
604 this->__pbump(__nout);
606 this->setp(nullptr, nullptr);
608 __hm_ = __hm == -1 ? nullptr : __p + __hm;
609 __mode_ = __rhs.__mode_;
610 __p = const_cast<char_type*>(__rhs.__str_.data());
611 __rhs.setg(__p, __p, __p);
612 __rhs.setp(__p, __p);
614 this->pubimbue(__rhs.getloc());
618 template <class _CharT, class _Traits, class _Allocator>
619 void basic_stringbuf<_CharT, _Traits, _Allocator>::swap(basic_stringbuf& __rhs)
620 # if _LIBCPP_STD_VER >= 20
621 noexcept(allocator_traits<_Allocator>::propagate_on_container_swap::value ||
622 allocator_traits<_Allocator>::is_always_equal::value)
625 char_type* __p = const_cast<char_type*>(__rhs.__str_.data());
626 ptrdiff_t __rbinp = -1;
627 ptrdiff_t __rninp = -1;
628 ptrdiff_t __reinp = -1;
629 if (__rhs.eback() != nullptr) {
630 __rbinp = __rhs.eback() - __p;
631 __rninp = __rhs.gptr() - __p;
632 __reinp = __rhs.egptr() - __p;
634 ptrdiff_t __rbout = -1;
635 ptrdiff_t __rnout = -1;
636 ptrdiff_t __reout = -1;
637 if (__rhs.pbase() != nullptr) {
638 __rbout = __rhs.pbase() - __p;
639 __rnout = __rhs.pptr() - __p;
640 __reout = __rhs.epptr() - __p;
642 ptrdiff_t __rhm = __rhs.__hm_ == nullptr ? -1 : __rhs.__hm_ - __p;
643 __p = const_cast<char_type*>(__str_.data());
644 ptrdiff_t __lbinp = -1;
645 ptrdiff_t __lninp = -1;
646 ptrdiff_t __leinp = -1;
647 if (this->eback() != nullptr) {
648 __lbinp = this->eback() - __p;
649 __lninp = this->gptr() - __p;
650 __leinp = this->egptr() - __p;
652 ptrdiff_t __lbout = -1;
653 ptrdiff_t __lnout = -1;
654 ptrdiff_t __leout = -1;
655 if (this->pbase() != nullptr) {
656 __lbout = this->pbase() - __p;
657 __lnout = this->pptr() - __p;
658 __leout = this->epptr() - __p;
660 ptrdiff_t __lhm = __hm_ == nullptr ? -1 : __hm_ - __p;
661 std::swap(__mode_, __rhs.__mode_);
662 __str_.swap(__rhs.__str_);
663 __p = const_cast<char_type*>(__str_.data());
665 this->setg(__p + __rbinp, __p + __rninp, __p + __reinp);
667 this->setg(nullptr, nullptr, nullptr);
669 this->setp(__p + __rbout, __p + __reout);
670 this->__pbump(__rnout);
672 this->setp(nullptr, nullptr);
673 __hm_ = __rhm == -1 ? nullptr : __p + __rhm;
674 __p = const_cast<char_type*>(__rhs.__str_.data());
676 __rhs.setg(__p + __lbinp, __p + __lninp, __p + __leinp);
678 __rhs.setg(nullptr, nullptr, nullptr);
680 __rhs.setp(__p + __lbout, __p + __leout);
681 __rhs.__pbump(__lnout);
683 __rhs.setp(nullptr, nullptr);
684 __rhs.__hm_ = __lhm == -1 ? nullptr : __p + __lhm;
685 locale __tl = __rhs.getloc();
686 __rhs.pubimbue(this->getloc());
687 this->pubimbue(__tl);
690 template <class _CharT, class _Traits, class _Allocator>
691 inline _LIBCPP_HIDE_FROM_ABI void
692 swap(basic_stringbuf<_CharT, _Traits, _Allocator>& __x, basic_stringbuf<_CharT, _Traits, _Allocator>& __y)
693 # if _LIBCPP_STD_VER >= 20
694 noexcept(noexcept(__x.swap(__y)))
700 # if _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_BUILDING_LIBRARY)
701 template <class _CharT, class _Traits, class _Allocator>
702 basic_string<_CharT, _Traits, _Allocator> basic_stringbuf<_CharT, _Traits, _Allocator>::str() const {
703 if (__mode_ & ios_base::out) {
704 if (__hm_ < this->pptr())
705 __hm_ = this->pptr();
706 return string_type(this->pbase(), __hm_, __str_.get_allocator());
707 } else if (__mode_ & ios_base::in)
708 return string_type(this->eback(), this->egptr(), __str_.get_allocator());
709 return string_type(__str_.get_allocator());
711 # endif // _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_BUILDING_LIBRARY)
713 template <class _CharT, class _Traits, class _Allocator>
714 _LIBCPP_HIDE_FROM_ABI void basic_stringbuf<_CharT, _Traits, _Allocator>::__init_buf_ptrs() {
716 char_type* __data = const_cast<char_type*>(__str_.data());
717 typename string_type::size_type __sz = __str_.size();
718 if (__mode_ & ios_base::in) {
719 __hm_ = __data + __sz;
720 this->setg(__data, __data, __hm_);
722 if (__mode_ & ios_base::out) {
723 __hm_ = __data + __sz;
724 __str_.resize(__str_.capacity());
725 this->setp(__data, __data + __str_.size());
726 if (__mode_ & (ios_base::app | ios_base::ate)) {
727 while (__sz > INT_MAX) {
728 this->pbump(INT_MAX);
737 # if _LIBCPP_STD_VER >= 20
738 template <class _CharT, class _Traits, class _Allocator>
739 _LIBCPP_HIDE_FROM_ABI basic_string_view<_CharT, _Traits>
740 basic_stringbuf<_CharT, _Traits, _Allocator>::view() const noexcept {
741 if (__mode_ & ios_base::out) {
742 if (__hm_ < this->pptr())
743 __hm_ = this->pptr();
744 return basic_string_view<_CharT, _Traits>(this->pbase(), __hm_);
745 } else if (__mode_ & ios_base::in)
746 return basic_string_view<_CharT, _Traits>(this->eback(), this->egptr());
747 return basic_string_view<_CharT, _Traits>();
749 # endif // _LIBCPP_STD_VER >= 20
751 template <class _CharT, class _Traits, class _Allocator>
752 typename basic_stringbuf<_CharT, _Traits, _Allocator>::int_type
753 basic_stringbuf<_CharT, _Traits, _Allocator>::underflow() {
754 if (__hm_ < this->pptr())
755 __hm_ = this->pptr();
756 if (__mode_ & ios_base::in) {
757 if (this->egptr() < __hm_)
758 this->setg(this->eback(), this->gptr(), __hm_);
759 if (this->gptr() < this->egptr())
760 return traits_type::to_int_type(*this->gptr());
762 return traits_type::eof();
765 template <class _CharT, class _Traits, class _Allocator>
766 typename basic_stringbuf<_CharT, _Traits, _Allocator>::int_type
767 basic_stringbuf<_CharT, _Traits, _Allocator>::pbackfail(int_type __c) {
768 if (__hm_ < this->pptr())
769 __hm_ = this->pptr();
770 if (this->eback() < this->gptr()) {
771 if (traits_type::eq_int_type(__c, traits_type::eof())) {
772 this->setg(this->eback(), this->gptr() - 1, __hm_);
773 return traits_type::not_eof(__c);
775 if ((__mode_ & ios_base::out) || traits_type::eq(traits_type::to_char_type(__c), this->gptr()[-1])) {
776 this->setg(this->eback(), this->gptr() - 1, __hm_);
777 *this->gptr() = traits_type::to_char_type(__c);
781 return traits_type::eof();
784 template <class _CharT, class _Traits, class _Allocator>
785 typename basic_stringbuf<_CharT, _Traits, _Allocator>::int_type
786 basic_stringbuf<_CharT, _Traits, _Allocator>::overflow(int_type __c) {
787 if (!traits_type::eq_int_type(__c, traits_type::eof())) {
788 ptrdiff_t __ninp = this->gptr() - this->eback();
789 if (this->pptr() == this->epptr()) {
790 if (!(__mode_ & ios_base::out))
791 return traits_type::eof();
792 # if _LIBCPP_HAS_EXCEPTIONS
794 # endif // _LIBCPP_HAS_EXCEPTIONS
795 ptrdiff_t __nout = this->pptr() - this->pbase();
796 ptrdiff_t __hm = __hm_ - this->pbase();
797 __str_.push_back(char_type());
798 __str_.resize(__str_.capacity());
799 char_type* __p = const_cast<char_type*>(__str_.data());
800 this->setp(__p, __p + __str_.size());
801 this->__pbump(__nout);
802 __hm_ = this->pbase() + __hm;
803 # if _LIBCPP_HAS_EXCEPTIONS
805 return traits_type::eof();
807 # endif // _LIBCPP_HAS_EXCEPTIONS
809 __hm_ = std::max(this->pptr() + 1, __hm_);
810 if (__mode_ & ios_base::in) {
811 char_type* __p = const_cast<char_type*>(__str_.data());
812 this->setg(__p, __p + __ninp, __hm_);
814 return this->sputc(traits_type::to_char_type(__c));
816 return traits_type::not_eof(__c);
819 template <class _CharT, class _Traits, class _Allocator>
820 typename basic_stringbuf<_CharT, _Traits, _Allocator>::pos_type basic_stringbuf<_CharT, _Traits, _Allocator>::seekoff(
821 off_type __off, ios_base::seekdir __way, ios_base::openmode __wch) {
822 if (__hm_ < this->pptr())
823 __hm_ = this->pptr();
824 if ((__wch & (ios_base::in | ios_base::out)) == 0)
826 if ((__wch & (ios_base::in | ios_base::out)) == (ios_base::in | ios_base::out) && __way == ios_base::cur)
828 const ptrdiff_t __hm = __hm_ == nullptr ? 0 : __hm_ - __str_.data();
835 if (__wch & ios_base::in)
836 __noff = this->gptr() - this->eback();
838 __noff = this->pptr() - this->pbase();
847 if (__noff < 0 || __hm < __noff)
850 if ((__wch & ios_base::in) && this->gptr() == nullptr)
852 if ((__wch & ios_base::out) && this->pptr() == nullptr)
855 if (__wch & ios_base::in)
856 this->setg(this->eback(), this->eback() + __noff, __hm_);
857 if (__wch & ios_base::out) {
858 this->setp(this->pbase(), this->epptr());
859 this->__pbump(__noff);
861 return pos_type(__noff);
864 // Class template basic_istringstream [istringstream]
866 template <class _CharT, class _Traits, class _Allocator>
867 class _LIBCPP_TEMPLATE_VIS basic_istringstream : public basic_istream<_CharT, _Traits> {
869 typedef _CharT char_type;
870 typedef _Traits traits_type;
871 typedef typename traits_type::int_type int_type;
872 typedef typename traits_type::pos_type pos_type;
873 typedef typename traits_type::off_type off_type;
874 typedef _Allocator allocator_type;
876 typedef basic_string<char_type, traits_type, allocator_type> string_type;
879 basic_stringbuf<char_type, traits_type, allocator_type> __sb_;
882 // [istringstream.cons] Constructors:
883 _LIBCPP_HIDE_FROM_ABI basic_istringstream()
884 : basic_istream<_CharT, _Traits>(std::addressof(__sb_)), __sb_(ios_base::in) {}
886 _LIBCPP_HIDE_FROM_ABI explicit basic_istringstream(ios_base::openmode __wch)
887 : basic_istream<_CharT, _Traits>(std::addressof(__sb_)), __sb_(__wch | ios_base::in) {}
889 _LIBCPP_HIDE_FROM_ABI explicit basic_istringstream(const string_type& __s, ios_base::openmode __wch = ios_base::in)
890 : basic_istream<_CharT, _Traits>(std::addressof(__sb_)), __sb_(__s, __wch | ios_base::in) {}
892 # if _LIBCPP_STD_VER >= 20
893 _LIBCPP_HIDE_FROM_ABI basic_istringstream(ios_base::openmode __wch, const _Allocator& __a)
894 : basic_istream<_CharT, _Traits>(std::addressof(__sb_)), __sb_(__wch | ios_base::in, __a) {}
896 _LIBCPP_HIDE_FROM_ABI explicit basic_istringstream(string_type&& __s, ios_base::openmode __wch = ios_base::in)
897 : basic_istream<_CharT, _Traits>(std::addressof(__sb_)), __sb_(std::move(__s), __wch | ios_base::in) {}
899 template <class _SAlloc>
900 _LIBCPP_HIDE_FROM_ABI basic_istringstream(const basic_string<_CharT, _Traits, _SAlloc>& __s, const _Allocator& __a)
901 : basic_istringstream(__s, ios_base::in, __a) {}
903 template <class _SAlloc>
904 _LIBCPP_HIDE_FROM_ABI basic_istringstream(
905 const basic_string<_CharT, _Traits, _SAlloc>& __s, ios_base::openmode __wch, const _Allocator& __a)
906 : basic_istream<_CharT, _Traits>(std::addressof(__sb_)), __sb_(__s, __wch | ios_base::in, __a) {}
908 template <class _SAlloc>
909 _LIBCPP_HIDE_FROM_ABI explicit basic_istringstream(const basic_string<_CharT, _Traits, _SAlloc>& __s,
910 ios_base::openmode __wch = ios_base::in)
911 : basic_istream<_CharT, _Traits>(std::addressof(__sb_)), __sb_(__s, __wch | ios_base::in) {}
912 # endif // _LIBCPP_STD_VER >= 20
914 # if _LIBCPP_STD_VER >= 26
917 requires is_convertible_v<const _Tp&, basic_string_view<_CharT, _Traits>>
918 _LIBCPP_HIDE_FROM_ABI explicit basic_istringstream(const _Tp& __t, ios_base::openmode __which = ios_base::in)
919 : basic_istringstream(__t, __which, _Allocator()) {}
922 requires is_convertible_v<const _Tp&, basic_string_view<_CharT, _Traits>>
923 _LIBCPP_HIDE_FROM_ABI basic_istringstream(const _Tp& __t, const _Allocator& __a)
924 : basic_istringstream(__t, ios_base::in, __a) {}
927 requires is_convertible_v<const _Tp&, basic_string_view<_CharT, _Traits>>
928 _LIBCPP_HIDE_FROM_ABI basic_istringstream(const _Tp& __t, ios_base::openmode __which, const _Allocator& __a)
929 : basic_istream<_CharT, _Traits>(std::addressof(__sb_)), __sb_(__t, __which | ios_base::in, __a) {}
931 # endif // _LIBCPP_STD_VER >= 26
933 basic_istringstream(const basic_istringstream&) = delete;
934 _LIBCPP_HIDE_FROM_ABI basic_istringstream(basic_istringstream&& __rhs)
935 : basic_istream<_CharT, _Traits>(std::move(__rhs)), __sb_(std::move(__rhs.__sb_)) {
936 basic_istream<_CharT, _Traits>::set_rdbuf(std::addressof(__sb_));
939 // [istringstream.assign] Assign and swap:
940 basic_istringstream& operator=(const basic_istringstream&) = delete;
941 basic_istringstream& operator=(basic_istringstream&& __rhs) {
942 basic_istream<char_type, traits_type>::operator=(std::move(__rhs));
943 __sb_ = std::move(__rhs.__sb_);
946 _LIBCPP_HIDE_FROM_ABI void swap(basic_istringstream& __rhs) {
947 basic_istream<char_type, traits_type>::swap(__rhs);
948 __sb_.swap(__rhs.__sb_);
951 // [istringstream.members] Member functions:
952 _LIBCPP_HIDE_FROM_ABI basic_stringbuf<char_type, traits_type, allocator_type>* rdbuf() const {
953 return const_cast<basic_stringbuf<char_type, traits_type, allocator_type>*>(std::addressof(__sb_));
956 # if _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_BUILDING_LIBRARY)
957 _LIBCPP_HIDE_FROM_ABI string_type str() const { return __sb_.str(); }
959 _LIBCPP_HIDE_FROM_ABI string_type str() const& { return __sb_.str(); }
961 _LIBCPP_HIDE_FROM_ABI string_type str() && { return std::move(__sb_).str(); }
964 # if _LIBCPP_STD_VER >= 20
965 template <class _SAlloc>
966 requires __is_allocator<_SAlloc>::value
967 _LIBCPP_HIDE_FROM_ABI basic_string<char_type, traits_type, _SAlloc> str(const _SAlloc& __sa) const {
968 return __sb_.str(__sa);
971 _LIBCPP_HIDE_FROM_ABI basic_string_view<char_type, traits_type> view() const noexcept { return __sb_.view(); }
972 # endif // _LIBCPP_STD_VER >= 20
974 _LIBCPP_HIDE_FROM_ABI void str(const string_type& __s) { __sb_.str(__s); }
976 # if _LIBCPP_STD_VER >= 20
977 template <class _SAlloc>
978 _LIBCPP_HIDE_FROM_ABI void str(const basic_string<char_type, traits_type, _SAlloc>& __s) {
982 _LIBCPP_HIDE_FROM_ABI void str(string_type&& __s) { __sb_.str(std::move(__s)); }
983 # endif // _LIBCPP_STD_VER >= 20
985 # if _LIBCPP_STD_VER >= 26
987 requires is_convertible_v<const _Tp&, basic_string_view<_CharT, _Traits>>
988 _LIBCPP_HIDE_FROM_ABI void str(const _Tp& __t) {
991 # endif // _LIBCPP_STD_VER >= 26
994 template <class _CharT, class _Traits, class _Allocator>
995 inline _LIBCPP_HIDE_FROM_ABI void
996 swap(basic_istringstream<_CharT, _Traits, _Allocator>& __x, basic_istringstream<_CharT, _Traits, _Allocator>& __y) {
1000 // Class template basic_ostringstream [ostringstream]
1002 template <class _CharT, class _Traits, class _Allocator>
1003 class _LIBCPP_TEMPLATE_VIS basic_ostringstream : public basic_ostream<_CharT, _Traits> {
1005 typedef _CharT char_type;
1006 typedef _Traits traits_type;
1007 typedef typename traits_type::int_type int_type;
1008 typedef typename traits_type::pos_type pos_type;
1009 typedef typename traits_type::off_type off_type;
1010 typedef _Allocator allocator_type;
1012 typedef basic_string<char_type, traits_type, allocator_type> string_type;
1015 basic_stringbuf<char_type, traits_type, allocator_type> __sb_;
1018 // [ostringstream.cons] Constructors:
1019 _LIBCPP_HIDE_FROM_ABI basic_ostringstream()
1020 : basic_ostream<_CharT, _Traits>(std::addressof(__sb_)), __sb_(ios_base::out) {}
1022 _LIBCPP_HIDE_FROM_ABI explicit basic_ostringstream(ios_base::openmode __wch)
1023 : basic_ostream<_CharT, _Traits>(std::addressof(__sb_)), __sb_(__wch | ios_base::out) {}
1025 _LIBCPP_HIDE_FROM_ABI explicit basic_ostringstream(const string_type& __s, ios_base::openmode __wch = ios_base::out)
1026 : basic_ostream<_CharT, _Traits>(std::addressof(__sb_)), __sb_(__s, __wch | ios_base::out) {}
1028 # if _LIBCPP_STD_VER >= 20
1029 _LIBCPP_HIDE_FROM_ABI basic_ostringstream(ios_base::openmode __wch, const _Allocator& __a)
1030 : basic_ostream<_CharT, _Traits>(std::addressof(__sb_)), __sb_(__wch | ios_base::out, __a) {}
1032 _LIBCPP_HIDE_FROM_ABI explicit basic_ostringstream(string_type&& __s, ios_base::openmode __wch = ios_base::out)
1033 : basic_ostream<_CharT, _Traits>(std::addressof(__sb_)), __sb_(std::move(__s), __wch | ios_base::out) {}
1035 template <class _SAlloc>
1036 _LIBCPP_HIDE_FROM_ABI basic_ostringstream(const basic_string<_CharT, _Traits, _SAlloc>& __s, const _Allocator& __a)
1037 : basic_ostringstream(__s, ios_base::out, __a) {}
1039 template <class _SAlloc>
1040 _LIBCPP_HIDE_FROM_ABI basic_ostringstream(
1041 const basic_string<_CharT, _Traits, _SAlloc>& __s, ios_base::openmode __wch, const _Allocator& __a)
1042 : basic_ostream<_CharT, _Traits>(std::addressof(__sb_)), __sb_(__s, __wch | ios_base::out, __a) {}
1044 template <class _SAlloc>
1045 requires(!is_same_v<_SAlloc, allocator_type>)
1046 _LIBCPP_HIDE_FROM_ABI explicit basic_ostringstream(const basic_string<_CharT, _Traits, _SAlloc>& __s,
1047 ios_base::openmode __wch = ios_base::out)
1048 : basic_ostream<_CharT, _Traits>(std::addressof(__sb_)), __sb_(__s, __wch | ios_base::out) {}
1049 # endif // _LIBCPP_STD_VER >= 20
1051 # if _LIBCPP_STD_VER >= 26
1053 template <class _Tp>
1054 requires is_convertible_v<const _Tp&, basic_string_view<_CharT, _Traits>>
1055 _LIBCPP_HIDE_FROM_ABI explicit basic_ostringstream(const _Tp& __t, ios_base::openmode __which = ios_base::out)
1056 : basic_ostringstream(__t, __which | ios_base::out, _Allocator()) {}
1058 template <class _Tp>
1059 requires is_convertible_v<const _Tp&, basic_string_view<_CharT, _Traits>>
1060 _LIBCPP_HIDE_FROM_ABI basic_ostringstream(const _Tp& __t, const _Allocator& __a)
1061 : basic_ostringstream(__t, ios_base::out, __a) {}
1063 template <class _Tp>
1064 requires is_convertible_v<const _Tp&, basic_string_view<_CharT, _Traits>>
1065 _LIBCPP_HIDE_FROM_ABI basic_ostringstream(const _Tp& __t, ios_base::openmode __which, const _Allocator& __a)
1066 : basic_ostream<_CharT, _Traits>(std::addressof(__sb_)), __sb_(__t, __which | ios_base::out, __a) {}
1068 # endif // _LIBCPP_STD_VER >= 26
1070 basic_ostringstream(const basic_ostringstream&) = delete;
1071 _LIBCPP_HIDE_FROM_ABI basic_ostringstream(basic_ostringstream&& __rhs)
1072 : basic_ostream<_CharT, _Traits>(std::move(__rhs)), __sb_(std::move(__rhs.__sb_)) {
1073 basic_ostream<_CharT, _Traits>::set_rdbuf(std::addressof(__sb_));
1076 // [ostringstream.assign] Assign and swap:
1077 basic_ostringstream& operator=(const basic_ostringstream&) = delete;
1078 basic_ostringstream& operator=(basic_ostringstream&& __rhs) {
1079 basic_ostream<char_type, traits_type>::operator=(std::move(__rhs));
1080 __sb_ = std::move(__rhs.__sb_);
1084 _LIBCPP_HIDE_FROM_ABI void swap(basic_ostringstream& __rhs) {
1085 basic_ostream<char_type, traits_type>::swap(__rhs);
1086 __sb_.swap(__rhs.__sb_);
1089 // [ostringstream.members] Member functions:
1090 _LIBCPP_HIDE_FROM_ABI basic_stringbuf<char_type, traits_type, allocator_type>* rdbuf() const {
1091 return const_cast<basic_stringbuf<char_type, traits_type, allocator_type>*>(std::addressof(__sb_));
1094 # if _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_BUILDING_LIBRARY)
1095 _LIBCPP_HIDE_FROM_ABI string_type str() const { return __sb_.str(); }
1097 _LIBCPP_HIDE_FROM_ABI string_type str() const& { return __sb_.str(); }
1099 _LIBCPP_HIDE_FROM_ABI string_type str() && { return std::move(__sb_).str(); }
1102 # if _LIBCPP_STD_VER >= 20
1103 template <class _SAlloc>
1104 requires __is_allocator<_SAlloc>::value
1105 _LIBCPP_HIDE_FROM_ABI basic_string<char_type, traits_type, _SAlloc> str(const _SAlloc& __sa) const {
1106 return __sb_.str(__sa);
1109 _LIBCPP_HIDE_FROM_ABI basic_string_view<char_type, traits_type> view() const noexcept { return __sb_.view(); }
1110 # endif // _LIBCPP_STD_VER >= 20
1112 _LIBCPP_HIDE_FROM_ABI void str(const string_type& __s) { __sb_.str(__s); }
1114 # if _LIBCPP_STD_VER >= 20
1115 template <class _SAlloc>
1116 _LIBCPP_HIDE_FROM_ABI void str(const basic_string<char_type, traits_type, _SAlloc>& __s) {
1120 _LIBCPP_HIDE_FROM_ABI void str(string_type&& __s) { __sb_.str(std::move(__s)); }
1121 # endif // _LIBCPP_STD_VER >= 20
1123 # if _LIBCPP_STD_VER >= 26
1124 template <class _Tp>
1125 requires is_convertible_v<const _Tp&, basic_string_view<_CharT, _Traits>>
1126 _LIBCPP_HIDE_FROM_ABI void str(const _Tp& __t) {
1129 # endif // _LIBCPP_STD_VER >= 26
1132 template <class _CharT, class _Traits, class _Allocator>
1133 inline _LIBCPP_HIDE_FROM_ABI void
1134 swap(basic_ostringstream<_CharT, _Traits, _Allocator>& __x, basic_ostringstream<_CharT, _Traits, _Allocator>& __y) {
1138 // Class template basic_stringstream [stringstream]
1140 template <class _CharT, class _Traits, class _Allocator>
1141 class _LIBCPP_TEMPLATE_VIS basic_stringstream : public basic_iostream<_CharT, _Traits> {
1143 typedef _CharT char_type;
1144 typedef _Traits traits_type;
1145 typedef typename traits_type::int_type int_type;
1146 typedef typename traits_type::pos_type pos_type;
1147 typedef typename traits_type::off_type off_type;
1148 typedef _Allocator allocator_type;
1150 typedef basic_string<char_type, traits_type, allocator_type> string_type;
1153 basic_stringbuf<char_type, traits_type, allocator_type> __sb_;
1156 // [stringstream.cons] constructors
1157 _LIBCPP_HIDE_FROM_ABI basic_stringstream()
1158 : basic_iostream<_CharT, _Traits>(std::addressof(__sb_)), __sb_(ios_base::in | ios_base::out) {}
1160 _LIBCPP_HIDE_FROM_ABI explicit basic_stringstream(ios_base::openmode __wch)
1161 : basic_iostream<_CharT, _Traits>(std::addressof(__sb_)), __sb_(__wch) {}
1163 _LIBCPP_HIDE_FROM_ABI explicit basic_stringstream(const string_type& __s,
1164 ios_base::openmode __wch = ios_base::in | ios_base::out)
1165 : basic_iostream<_CharT, _Traits>(std::addressof(__sb_)), __sb_(__s, __wch) {}
1167 # if _LIBCPP_STD_VER >= 20
1168 _LIBCPP_HIDE_FROM_ABI basic_stringstream(ios_base::openmode __wch, const _Allocator& __a)
1169 : basic_iostream<_CharT, _Traits>(std::addressof(__sb_)), __sb_(__wch, __a) {}
1171 _LIBCPP_HIDE_FROM_ABI explicit basic_stringstream(string_type&& __s,
1172 ios_base::openmode __wch = ios_base::out | ios_base::in)
1173 : basic_iostream<_CharT, _Traits>(std::addressof(__sb_)), __sb_(std::move(__s), __wch) {}
1175 template <class _SAlloc>
1176 _LIBCPP_HIDE_FROM_ABI basic_stringstream(const basic_string<_CharT, _Traits, _SAlloc>& __s, const _Allocator& __a)
1177 : basic_stringstream(__s, ios_base::out | ios_base::in, __a) {}
1179 template <class _SAlloc>
1180 _LIBCPP_HIDE_FROM_ABI
1181 basic_stringstream(const basic_string<_CharT, _Traits, _SAlloc>& __s, ios_base::openmode __wch, const _Allocator& __a)
1182 : basic_iostream<_CharT, _Traits>(std::addressof(__sb_)), __sb_(__s, __wch, __a) {}
1184 template <class _SAlloc>
1185 requires(!is_same_v<_SAlloc, allocator_type>)
1186 _LIBCPP_HIDE_FROM_ABI explicit basic_stringstream(const basic_string<_CharT, _Traits, _SAlloc>& __s,
1187 ios_base::openmode __wch = ios_base::out | ios_base::in)
1188 : basic_iostream<_CharT, _Traits>(std::addressof(__sb_)), __sb_(__s, __wch) {}
1189 # endif // _LIBCPP_STD_VER >= 20
1191 # if _LIBCPP_STD_VER >= 26
1193 template <class _Tp>
1194 requires is_convertible_v<const _Tp&, basic_string_view<_CharT, _Traits>>
1195 _LIBCPP_HIDE_FROM_ABI explicit basic_stringstream(const _Tp& __t,
1196 ios_base::openmode __which = ios_base::out | ios_base::in)
1197 : basic_stringstream(__t, __which, _Allocator()) {}
1199 template <class _Tp>
1200 requires is_convertible_v<const _Tp&, basic_string_view<_CharT, _Traits>>
1201 _LIBCPP_HIDE_FROM_ABI basic_stringstream(const _Tp& __t, const _Allocator& __a)
1202 : basic_stringstream(__t, ios_base::out | ios_base::in, __a) {}
1204 template <class _Tp>
1205 requires is_convertible_v<const _Tp&, basic_string_view<_CharT, _Traits>>
1206 _LIBCPP_HIDE_FROM_ABI basic_stringstream(const _Tp& __t, ios_base::openmode __which, const _Allocator& __a)
1207 : basic_iostream<_CharT, _Traits>(std::addressof(__sb_)), __sb_(__t, __which, __a) {}
1209 # endif // _LIBCPP_STD_VER >= 26
1211 basic_stringstream(const basic_stringstream&) = delete;
1212 _LIBCPP_HIDE_FROM_ABI basic_stringstream(basic_stringstream&& __rhs)
1213 : basic_iostream<_CharT, _Traits>(std::move(__rhs)), __sb_(std::move(__rhs.__sb_)) {
1214 basic_istream<_CharT, _Traits>::set_rdbuf(std::addressof(__sb_));
1217 // [stringstream.assign] Assign and swap:
1218 basic_stringstream& operator=(const basic_stringstream&) = delete;
1219 basic_stringstream& operator=(basic_stringstream&& __rhs) {
1220 basic_iostream<char_type, traits_type>::operator=(std::move(__rhs));
1221 __sb_ = std::move(__rhs.__sb_);
1224 _LIBCPP_HIDE_FROM_ABI void swap(basic_stringstream& __rhs) {
1225 basic_iostream<char_type, traits_type>::swap(__rhs);
1226 __sb_.swap(__rhs.__sb_);
1229 // [stringstream.members] Member functions:
1230 _LIBCPP_HIDE_FROM_ABI basic_stringbuf<char_type, traits_type, allocator_type>* rdbuf() const {
1231 return const_cast<basic_stringbuf<char_type, traits_type, allocator_type>*>(std::addressof(__sb_));
1234 # if _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_BUILDING_LIBRARY)
1235 _LIBCPP_HIDE_FROM_ABI string_type str() const { return __sb_.str(); }
1237 _LIBCPP_HIDE_FROM_ABI string_type str() const& { return __sb_.str(); }
1239 _LIBCPP_HIDE_FROM_ABI string_type str() && { return std::move(__sb_).str(); }
1242 # if _LIBCPP_STD_VER >= 20
1243 template <class _SAlloc>
1244 requires __is_allocator<_SAlloc>::value
1245 _LIBCPP_HIDE_FROM_ABI basic_string<char_type, traits_type, _SAlloc> str(const _SAlloc& __sa) const {
1246 return __sb_.str(__sa);
1249 _LIBCPP_HIDE_FROM_ABI basic_string_view<char_type, traits_type> view() const noexcept { return __sb_.view(); }
1250 # endif // _LIBCPP_STD_VER >= 20
1252 _LIBCPP_HIDE_FROM_ABI void str(const string_type& __s) { __sb_.str(__s); }
1254 # if _LIBCPP_STD_VER >= 20
1255 template <class _SAlloc>
1256 _LIBCPP_HIDE_FROM_ABI void str(const basic_string<char_type, traits_type, _SAlloc>& __s) {
1260 _LIBCPP_HIDE_FROM_ABI void str(string_type&& __s) { __sb_.str(std::move(__s)); }
1261 # endif // _LIBCPP_STD_VER >= 20
1263 # if _LIBCPP_STD_VER >= 26
1264 template <class _Tp>
1265 requires is_convertible_v<const _Tp&, basic_string_view<_CharT, _Traits>>
1266 _LIBCPP_HIDE_FROM_ABI void str(const _Tp& __t) {
1269 # endif // _LIBCPP_STD_VER >= 26
1272 template <class _CharT, class _Traits, class _Allocator>
1273 inline _LIBCPP_HIDE_FROM_ABI void
1274 swap(basic_stringstream<_CharT, _Traits, _Allocator>& __x, basic_stringstream<_CharT, _Traits, _Allocator>& __y) {
1278 # if _LIBCPP_AVAILABILITY_HAS_ADDITIONAL_IOSTREAM_EXPLICIT_INSTANTIATIONS_1
1279 extern template class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_stringbuf<char>;
1280 extern template class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_stringstream<char>;
1281 extern template class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_ostringstream<char>;
1282 extern template class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_istringstream<char>;
1285 _LIBCPP_END_NAMESPACE_STD
1289 # endif // _LIBCPP_HAS_LOCALIZATION
1291 # if _LIBCPP_STD_VER <= 20 && !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES)
1293 # include <type_traits>
1295 #endif // __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
1297 #endif // _LIBCPP_SSTREAM