1// -*- C++ -*-
2//===----------------------------------------------------------------------===//
3//
4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
5// See https://llvm.org/LICENSE.txt for license information.
6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7//
8//===----------------------------------------------------------------------===//
9
10#ifndef _LIBCPP_IOS
11#define _LIBCPP_IOS
12
13/*
14 ios synopsis
15
16#include <iosfwd>
17
18namespace std
19{
20
21typedef OFF_T streamoff;
22typedef SZ_T streamsize;
23template <class stateT> class fpos;
24
25class ios_base
26{
27public:
28 class failure;
29
30 typedef T1 fmtflags;
31 static constexpr fmtflags boolalpha;
32 static constexpr fmtflags dec;
33 static constexpr fmtflags fixed;
34 static constexpr fmtflags hex;
35 static constexpr fmtflags internal;
36 static constexpr fmtflags left;
37 static constexpr fmtflags oct;
38 static constexpr fmtflags right;
39 static constexpr fmtflags scientific;
40 static constexpr fmtflags showbase;
41 static constexpr fmtflags showpoint;
42 static constexpr fmtflags showpos;
43 static constexpr fmtflags skipws;
44 static constexpr fmtflags unitbuf;
45 static constexpr fmtflags uppercase;
46 static constexpr fmtflags adjustfield;
47 static constexpr fmtflags basefield;
48 static constexpr fmtflags floatfield;
49
50 typedef T2 iostate;
51 static constexpr iostate badbit;
52 static constexpr iostate eofbit;
53 static constexpr iostate failbit;
54 static constexpr iostate goodbit;
55
56 typedef T3 openmode;
57 static constexpr openmode app;
58 static constexpr openmode ate;
59 static constexpr openmode binary;
60 static constexpr openmode in;
61 static constexpr openmode noreplace; // since C++23
62 static constexpr openmode out;
63 static constexpr openmode trunc;
64
65 typedef T4 seekdir;
66 static constexpr seekdir beg;
67 static constexpr seekdir cur;
68 static constexpr seekdir end;
69
70 class Init;
71
72 // 27.5.2.2 fmtflags state:
73 fmtflags flags() const;
74 fmtflags flags(fmtflags fmtfl);
75 fmtflags setf(fmtflags fmtfl);
76 fmtflags setf(fmtflags fmtfl, fmtflags mask);
77 void unsetf(fmtflags mask);
78
79 streamsize precision() const;
80 streamsize precision(streamsize prec);
81 streamsize width() const;
82 streamsize width(streamsize wide);
83
84 // 27.5.2.3 locales:
85 locale imbue(const locale& loc);
86 locale getloc() const;
87
88 // 27.5.2.5 storage:
89 static int xalloc();
90 long& iword(int index);
91 void*& pword(int index);
92
93 // destructor
94 virtual ~ios_base();
95
96 // 27.5.2.6 callbacks;
97 enum event { erase_event, imbue_event, copyfmt_event };
98 typedef void (*event_callback)(event, ios_base&, int index);
99 void register_callback(event_callback fn, int index);
100
101 ios_base(const ios_base&) = delete;
102 ios_base& operator=(const ios_base&) = delete;
103
104 static bool sync_with_stdio(bool sync = true);
105
106protected:
107 ios_base();
108};
109
110template <class charT, class traits = char_traits<charT> >
111class basic_ios
112 : public ios_base
113{
114public:
115 // types:
116 typedef charT char_type;
117 typedef typename traits::int_type int_type; // removed in C++17
118 typedef typename traits::pos_type pos_type; // removed in C++17
119 typedef typename traits::off_type off_type; // removed in C++17
120 typedef traits traits_type;
121
122 operator unspecified-bool-type() const;
123 bool operator!() const;
124 iostate rdstate() const;
125 void clear(iostate state = goodbit);
126 void setstate(iostate state);
127 bool good() const;
128 bool eof() const;
129 bool fail() const;
130 bool bad() const;
131
132 iostate exceptions() const;
133 void exceptions(iostate except);
134
135 // 27.5.4.1 Constructor/destructor:
136 explicit basic_ios(basic_streambuf<charT,traits>* sb);
137 virtual ~basic_ios();
138
139 // 27.5.4.2 Members:
140 basic_ostream<charT,traits>* tie() const;
141 basic_ostream<charT,traits>* tie(basic_ostream<charT,traits>* tiestr);
142
143 basic_streambuf<charT,traits>* rdbuf() const;
144 basic_streambuf<charT,traits>* rdbuf(basic_streambuf<charT,traits>* sb);
145
146 basic_ios& copyfmt(const basic_ios& rhs);
147
148 char_type fill() const;
149 char_type fill(char_type ch);
150
151 locale imbue(const locale& loc);
152
153 char narrow(char_type c, char dfault) const;
154 char_type widen(char c) const;
155
156 basic_ios(const basic_ios& ) = delete;
157 basic_ios& operator=(const basic_ios&) = delete;
158
159protected:
160 basic_ios();
161 void init(basic_streambuf<charT,traits>* sb);
162 void move(basic_ios& rhs);
163 void swap(basic_ios& rhs) noexcept;
164 void set_rdbuf(basic_streambuf<charT, traits>* sb);
165};
166
167// 27.5.5, manipulators:
168ios_base& boolalpha (ios_base& str);
169ios_base& noboolalpha(ios_base& str);
170ios_base& showbase (ios_base& str);
171ios_base& noshowbase (ios_base& str);
172ios_base& showpoint (ios_base& str);
173ios_base& noshowpoint(ios_base& str);
174ios_base& showpos (ios_base& str);
175ios_base& noshowpos (ios_base& str);
176ios_base& skipws (ios_base& str);
177ios_base& noskipws (ios_base& str);
178ios_base& uppercase (ios_base& str);
179ios_base& nouppercase(ios_base& str);
180ios_base& unitbuf (ios_base& str);
181ios_base& nounitbuf (ios_base& str);
182
183// 27.5.5.2 adjustfield:
184ios_base& internal (ios_base& str);
185ios_base& left (ios_base& str);
186ios_base& right (ios_base& str);
187
188// 27.5.5.3 basefield:
189ios_base& dec (ios_base& str);
190ios_base& hex (ios_base& str);
191ios_base& oct (ios_base& str);
192
193// 27.5.5.4 floatfield:
194ios_base& fixed (ios_base& str);
195ios_base& scientific (ios_base& str);
196ios_base& hexfloat (ios_base& str);
197ios_base& defaultfloat(ios_base& str);
198
199// 27.5.5.5 error reporting:
200enum class io_errc
201{
202 stream = 1
203};
204
205concept_map ErrorCodeEnum<io_errc> { };
206error_code make_error_code(io_errc e) noexcept;
207error_condition make_error_condition(io_errc e) noexcept;
208storage-class-specifier const error_category& iostream_category() noexcept;
209
210} // std
211
212*/
213
214#if __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
215# include <__cxx03/ios>
216#else
217# include <__config>
218
219// standard-mandated includes
220
221// [ios.syn]
222# include <iosfwd>
223
224# if _LIBCPP_HAS_LOCALIZATION
225
226# include <__fwd/ios.h>
227# include <__ios/fpos.h>
228# include <__locale>
229# include <__memory/addressof.h>
230# include <__system_error/error_category.h>
231# include <__system_error/error_code.h>
232# include <__system_error/error_condition.h>
233# include <__system_error/system_error.h>
234# include <__utility/swap.h>
235# include <__verbose_abort>
236# include <version>
237
238# if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
239# pragma GCC system_header
240# endif
241
242_LIBCPP_PUSH_MACROS
243# include <__undef_macros>
244
245_LIBCPP_BEGIN_NAMESPACE_STD
246_LIBCPP_BEGIN_EXPLICIT_ABI_ANNOTATIONS
247
248typedef ptrdiff_t streamsize;
249
250class _LIBCPP_EXPORTED_FROM_ABI ios_base {
251public:
252 class _LIBCPP_EXPORTED_FROM_ABI failure;
253
254 typedef unsigned int fmtflags;
255 static const fmtflags boolalpha = 0x0001;
256 static const fmtflags dec = 0x0002;
257 static const fmtflags fixed = 0x0004;
258 static const fmtflags hex = 0x0008;
259 static const fmtflags internal = 0x0010;
260 static const fmtflags left = 0x0020;
261 static const fmtflags oct = 0x0040;
262 static const fmtflags right = 0x0080;
263 static const fmtflags scientific = 0x0100;
264 static const fmtflags showbase = 0x0200;
265 static const fmtflags showpoint = 0x0400;
266 static const fmtflags showpos = 0x0800;
267 static const fmtflags skipws = 0x1000;
268 static const fmtflags unitbuf = 0x2000;
269 static const fmtflags uppercase = 0x4000;
270 static const fmtflags adjustfield = left | right | internal;
271 static const fmtflags basefield = dec | oct | hex;
272 static const fmtflags floatfield = scientific | fixed;
273
274 typedef unsigned int iostate;
275 static const iostate badbit = 0x1;
276 static const iostate eofbit = 0x2;
277 static const iostate failbit = 0x4;
278 static const iostate goodbit = 0x0;
279
280 typedef unsigned int openmode;
281 static const openmode app = 0x01;
282 static const openmode ate = 0x02;
283 static const openmode binary = 0x04;
284 static const openmode in = 0x08;
285 static const openmode out = 0x10;
286 static const openmode trunc = 0x20;
287# if _LIBCPP_STD_VER >= 23
288 static const openmode noreplace = 0x40;
289# endif
290
291 enum seekdir { beg, cur, end };
292
293# if _LIBCPP_STD_VER <= 14
294 typedef iostate io_state;
295 typedef openmode open_mode;
296 typedef seekdir seek_dir;
297
298 typedef std::streamoff streamoff;
299 typedef std::streampos streampos;
300# endif
301
302 class _LIBCPP_EXPORTED_FROM_ABI Init;
303
304 // 27.5.2.2 fmtflags state:
305 [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI fmtflags flags() const;
306 _LIBCPP_HIDE_FROM_ABI fmtflags flags(fmtflags __fmtfl);
307 _LIBCPP_HIDE_FROM_ABI fmtflags setf(fmtflags __fmtfl);
308 _LIBCPP_HIDE_FROM_ABI fmtflags setf(fmtflags __fmtfl, fmtflags __mask);
309 _LIBCPP_HIDE_FROM_ABI void unsetf(fmtflags __mask);
310
311 [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI streamsize precision() const;
312 _LIBCPP_HIDE_FROM_ABI streamsize precision(streamsize __prec);
313 [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI streamsize width() const;
314 _LIBCPP_HIDE_FROM_ABI streamsize width(streamsize __wide);
315
316 // 27.5.2.3 locales:
317 locale imbue(const locale& __loc);
318 [[__nodiscard__]] locale getloc() const;
319
320 // 27.5.2.5 storage:
321 [[__nodiscard__]] static int xalloc();
322 [[__nodiscard__]] long& iword(int __index);
323 [[__nodiscard__]] void*& pword(int __index);
324
325 // destructor
326 virtual ~ios_base();
327
328 // 27.5.2.6 callbacks;
329 enum event { erase_event, imbue_event, copyfmt_event };
330 typedef void (*event_callback)(event, ios_base&, int __index);
331 void register_callback(event_callback __fn, int __index);
332
333 ios_base(const ios_base&) = delete;
334 ios_base& operator=(const ios_base&) = delete;
335
336 static bool sync_with_stdio(bool __sync = true);
337
338 [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI iostate rdstate() const;
339 void clear(iostate __state = goodbit);
340 _LIBCPP_HIDE_FROM_ABI void setstate(iostate __state);
341
342 [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI bool good() const;
343 [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI bool eof() const;
344 [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI bool fail() const;
345 [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI bool bad() const;
346
347 [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI iostate exceptions() const;
348 _LIBCPP_HIDE_FROM_ABI void exceptions(iostate __iostate);
349
350 void __set_badbit_and_consider_rethrow();
351 void __set_failbit_and_consider_rethrow();
352
353 _LIBCPP_HIDE_FROM_ABI void __setstate_nothrow(iostate __state) {
354 if (__rdbuf_)
355 __rdstate_ |= __state;
356 else
357 __rdstate_ |= __state | ios_base::badbit;
358 }
359
360protected:
361 _LIBCPP_HIDE_FROM_ABI ios_base() : __loc_(__private_constructor_tag(), nullptr) {
362 // Purposefully does no initialization
363 //
364 // Except for the locale, this is a sentinel to avoid destroying
365 // an uninitialized object. See
366 // test/libcxx/input.output/iostreams.base/ios.base/ios.base.cons/dtor.uninitialized.pass.cpp
367 // for the details.
368 }
369
370 void init(void* __sb);
371 _LIBCPP_HIDE_FROM_ABI void* rdbuf() const { return __rdbuf_; }
372
373 _LIBCPP_HIDE_FROM_ABI void rdbuf(void* __sb) {
374 __rdbuf_ = __sb;
375 clear();
376 }
377
378 void __call_callbacks(event);
379 void copyfmt(const ios_base&);
380 void move(ios_base&);
381 void swap(ios_base&) _NOEXCEPT;
382
383 _LIBCPP_HIDE_FROM_ABI void set_rdbuf(void* __sb) { __rdbuf_ = __sb; }
384
385private:
386 fmtflags __fmtflags_;
387 streamsize __precision_;
388 streamsize __width_;
389 iostate __rdstate_;
390 iostate __exceptions_;
391 void* __rdbuf_;
392# ifndef _LIBCPP_CXX03_LANG
393 union {
394 locale __loc_;
395 };
396# else
397 // We only care about the union above to implement the destructor correctly, which we do in C++26 anyways. No need to
398 // handle C++03 shenanigans.
399 locale __loc_;
400# endif
401 event_callback* __fn_;
402 int* __index_;
403 size_t __event_size_;
404 size_t __event_cap_;
405 long* __iarray_;
406 size_t __iarray_size_;
407 size_t __iarray_cap_;
408 void** __parray_;
409 size_t __parray_size_;
410 size_t __parray_cap_;
411};
412
413// enum class io_errc
414_LIBCPP_DECLARE_STRONG_ENUM(io_errc){stream = 1};
415_LIBCPP_DECLARE_STRONG_ENUM_EPILOG(io_errc)
416
417template <>
418struct is_error_code_enum<io_errc> : public true_type {};
419
420# ifdef _LIBCPP_CXX03_LANG
421template <>
422struct is_error_code_enum<io_errc::__lx> : public true_type {};
423# endif
424
425[[__nodiscard__]] _LIBCPP_EXPORTED_FROM_ABI const error_category& iostream_category() _NOEXCEPT;
426
427[[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI error_code make_error_code(io_errc __e) _NOEXCEPT {
428 return error_code(static_cast<int>(__e), iostream_category());
429}
430
431[[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI error_condition make_error_condition(io_errc __e) _NOEXCEPT {
432 return error_condition(static_cast<int>(__e), iostream_category());
433}
434
435class _LIBCPP_EXPORTED_FROM_ABI ios_base::failure : public system_error {
436public:
437 explicit failure(const string& __msg, const error_code& __ec = io_errc::stream);
438 explicit failure(const char* __msg, const error_code& __ec = io_errc::stream);
439 _LIBCPP_HIDE_FROM_ABI failure(const failure&) _NOEXCEPT = default;
440 ~failure() _NOEXCEPT override;
441};
442
443[[__noreturn__]] inline _LIBCPP_HIDE_FROM_ABI void __throw_failure(char const* __msg) {
444# if _LIBCPP_HAS_EXCEPTIONS
445 throw ios_base::failure(__msg);
446# else
447 _LIBCPP_VERBOSE_ABORT("ios_base::failure was thrown in -fno-exceptions mode with message \"%s\"", __msg);
448# endif
449}
450
451class _LIBCPP_EXPORTED_FROM_ABI ios_base::Init {
452public:
453 Init();
454 ~Init();
455};
456
457// fmtflags
458
459inline _LIBCPP_HIDE_FROM_ABI ios_base::fmtflags ios_base::flags() const { return __fmtflags_; }
460
461inline _LIBCPP_HIDE_FROM_ABI ios_base::fmtflags ios_base::flags(fmtflags __fmtfl) {
462 fmtflags __r = __fmtflags_;
463 __fmtflags_ = __fmtfl;
464 return __r;
465}
466
467inline _LIBCPP_HIDE_FROM_ABI ios_base::fmtflags ios_base::setf(fmtflags __fmtfl) {
468 fmtflags __r = __fmtflags_;
469 __fmtflags_ |= __fmtfl;
470 return __r;
471}
472
473inline _LIBCPP_HIDE_FROM_ABI void ios_base::unsetf(fmtflags __mask) { __fmtflags_ &= ~__mask; }
474
475inline _LIBCPP_HIDE_FROM_ABI ios_base::fmtflags ios_base::setf(fmtflags __fmtfl, fmtflags __mask) {
476 fmtflags __r = __fmtflags_;
477 unsetf(__mask);
478 __fmtflags_ |= __fmtfl & __mask;
479 return __r;
480}
481
482// precision
483
484inline _LIBCPP_HIDE_FROM_ABI streamsize ios_base::precision() const { return __precision_; }
485
486inline _LIBCPP_HIDE_FROM_ABI streamsize ios_base::precision(streamsize __prec) {
487 streamsize __r = __precision_;
488 __precision_ = __prec;
489 return __r;
490}
491
492// width
493
494inline _LIBCPP_HIDE_FROM_ABI streamsize ios_base::width() const { return __width_; }
495
496inline _LIBCPP_HIDE_FROM_ABI streamsize ios_base::width(streamsize __wide) {
497 streamsize __r = __width_;
498 __width_ = __wide;
499 return __r;
500}
501
502// iostate
503
504inline _LIBCPP_HIDE_FROM_ABI ios_base::iostate ios_base::rdstate() const { return __rdstate_; }
505
506inline _LIBCPP_HIDE_FROM_ABI void ios_base::setstate(iostate __state) { clear(state: __rdstate_ | __state); }
507
508inline _LIBCPP_HIDE_FROM_ABI bool ios_base::good() const { return __rdstate_ == 0; }
509
510inline _LIBCPP_HIDE_FROM_ABI bool ios_base::eof() const { return (__rdstate_ & eofbit) != 0; }
511
512inline _LIBCPP_HIDE_FROM_ABI bool ios_base::fail() const { return (__rdstate_ & (failbit | badbit)) != 0; }
513
514inline _LIBCPP_HIDE_FROM_ABI bool ios_base::bad() const { return (__rdstate_ & badbit) != 0; }
515
516inline _LIBCPP_HIDE_FROM_ABI ios_base::iostate ios_base::exceptions() const { return __exceptions_; }
517
518inline _LIBCPP_HIDE_FROM_ABI void ios_base::exceptions(iostate __iostate) {
519 __exceptions_ = __iostate;
520 clear(state: __rdstate_);
521}
522
523template <class _Traits>
524// Attribute 'packed' is used to keep the layout compatible with the previous
525// definition of the '__fill_' and '_set_' pair in basic_ios on AIX & z/OS.
526struct _LIBCPP_PACKED _FillHelper {
527 _LIBCPP_HIDE_FROM_ABI void __init() {
528 __set_ = false;
529 __fill_val_ = _Traits::eof();
530 }
531 _LIBCPP_HIDE_FROM_ABI _FillHelper& operator=(typename _Traits::int_type __x) {
532 __set_ = true;
533 __fill_val_ = __x;
534 return *this;
535 }
536 _LIBCPP_HIDE_FROM_ABI bool __is_set() const { return __set_; }
537 _LIBCPP_HIDE_FROM_ABI typename _Traits::int_type __get() const { return __fill_val_; }
538
539private:
540 typename _Traits::int_type __fill_val_;
541 bool __set_;
542};
543
544template <class _Traits>
545struct _LIBCPP_PACKED _SentinelValueFill {
546 _LIBCPP_HIDE_FROM_ABI void __init() { __fill_val_ = _Traits::eof(); }
547 _LIBCPP_HIDE_FROM_ABI _SentinelValueFill& operator=(typename _Traits::int_type __x) {
548 __fill_val_ = __x;
549 return *this;
550 }
551 _LIBCPP_HIDE_FROM_ABI bool __is_set() const { return __fill_val_ != _Traits::eof(); }
552 _LIBCPP_HIDE_FROM_ABI typename _Traits::int_type __get() const { return __fill_val_; }
553
554private:
555 typename _Traits::int_type __fill_val_;
556};
557
558template <class _CharT, class _Traits>
559class basic_ios : public ios_base {
560public:
561 // types:
562 typedef _CharT char_type;
563 typedef _Traits traits_type;
564
565 typedef typename traits_type::int_type int_type;
566 typedef typename traits_type::pos_type pos_type;
567 typedef typename traits_type::off_type off_type;
568
569 static_assert(is_same<_CharT, typename traits_type::char_type>::value,
570 "traits_type::char_type must be the same type as CharT");
571
572# ifdef _LIBCPP_CXX03_LANG
573 // Preserve the ability to compare with literal 0,
574 // and implicitly convert to bool, but not implicitly convert to int.
575 _LIBCPP_HIDE_FROM_ABI operator void*() const { return fail() ? nullptr : (void*)this; }
576# else
577 _LIBCPP_HIDE_FROM_ABI explicit operator bool() const { return !fail(); }
578# endif
579
580 [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI bool operator!() const { return fail(); }
581 [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI iostate rdstate() const { return ios_base::rdstate(); }
582 _LIBCPP_HIDE_FROM_ABI void clear(iostate __state = goodbit) { ios_base::clear(__state); }
583 _LIBCPP_HIDE_FROM_ABI void setstate(iostate __state) { ios_base::setstate(__state); }
584 [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI bool good() const { return ios_base::good(); }
585 [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI bool eof() const { return ios_base::eof(); }
586 [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI bool fail() const { return ios_base::fail(); }
587 [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI bool bad() const { return ios_base::bad(); }
588
589 [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI iostate exceptions() const { return ios_base::exceptions(); }
590 _LIBCPP_HIDE_FROM_ABI void exceptions(iostate __iostate) { ios_base::exceptions(__iostate); }
591
592 // 27.5.4.1 Constructor/destructor:
593 _LIBCPP_HIDE_FROM_ABI explicit basic_ios(basic_streambuf<char_type, traits_type>* __sb);
594 ~basic_ios() override;
595
596 // 27.5.4.2 Members:
597 [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI basic_ostream<char_type, traits_type>* tie() const;
598 _LIBCPP_HIDE_FROM_ABI basic_ostream<char_type, traits_type>* tie(basic_ostream<char_type, traits_type>* __tiestr);
599
600 [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI basic_streambuf<char_type, traits_type>* rdbuf() const;
601 _LIBCPP_HIDE_FROM_ABI basic_streambuf<char_type, traits_type>* rdbuf(basic_streambuf<char_type, traits_type>* __sb);
602
603 basic_ios& copyfmt(const basic_ios& __rhs);
604
605 [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI char_type fill() const;
606 _LIBCPP_HIDE_FROM_ABI char_type fill(char_type __ch);
607
608 _LIBCPP_HIDE_FROM_ABI locale imbue(const locale& __loc);
609
610 [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI char narrow(char_type __c, char __dfault) const;
611 [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI char_type widen(char __c) const;
612
613protected:
614 _LIBCPP_HIDE_FROM_ABI basic_ios() {
615 // purposefully does no initialization
616 // since the destructor does nothing this does not have ios_base issues.
617 }
618 _LIBCPP_HIDE_FROM_ABI void init(basic_streambuf<char_type, traits_type>* __sb);
619
620 _LIBCPP_HIDE_FROM_ABI void move(basic_ios& __rhs);
621 _LIBCPP_HIDE_FROM_ABI void move(basic_ios&& __rhs) { move(__rhs); }
622 _LIBCPP_HIDE_FROM_ABI void swap(basic_ios& __rhs) _NOEXCEPT;
623 _LIBCPP_HIDE_FROM_ABI void set_rdbuf(basic_streambuf<char_type, traits_type>* __sb);
624
625private:
626 basic_ostream<char_type, traits_type>* __tie_;
627
628# if defined(_LIBCPP_ABI_IOS_ALLOW_ARBITRARY_FILL_VALUE)
629 using _FillType _LIBCPP_NODEBUG = _FillHelper<traits_type>;
630# else
631 using _FillType _LIBCPP_NODEBUG = _SentinelValueFill<traits_type>;
632# endif
633 mutable _FillType __fill_;
634};
635
636template <class _CharT, class _Traits>
637inline _LIBCPP_HIDE_FROM_ABI basic_ios<_CharT, _Traits>::basic_ios(basic_streambuf<char_type, traits_type>* __sb) {
638 init(__sb);
639}
640
641template <class _CharT, class _Traits>
642basic_ios<_CharT, _Traits>::~basic_ios() {}
643
644template <class _CharT, class _Traits>
645inline _LIBCPP_HIDE_FROM_ABI void basic_ios<_CharT, _Traits>::init(basic_streambuf<char_type, traits_type>* __sb) {
646 ios_base::init(__sb);
647 __tie_ = nullptr;
648 __fill_.__init();
649}
650
651template <class _CharT, class _Traits>
652inline _LIBCPP_HIDE_FROM_ABI basic_ostream<_CharT, _Traits>* basic_ios<_CharT, _Traits>::tie() const {
653 return __tie_;
654}
655
656template <class _CharT, class _Traits>
657inline _LIBCPP_HIDE_FROM_ABI basic_ostream<_CharT, _Traits>*
658basic_ios<_CharT, _Traits>::tie(basic_ostream<char_type, traits_type>* __tiestr) {
659 basic_ostream<char_type, traits_type>* __r = __tie_;
660 __tie_ = __tiestr;
661 return __r;
662}
663
664template <class _CharT, class _Traits>
665inline _LIBCPP_HIDE_FROM_ABI basic_streambuf<_CharT, _Traits>* basic_ios<_CharT, _Traits>::rdbuf() const {
666 return static_cast<basic_streambuf<char_type, traits_type>*>(ios_base::rdbuf());
667}
668
669template <class _CharT, class _Traits>
670inline _LIBCPP_HIDE_FROM_ABI basic_streambuf<_CharT, _Traits>*
671basic_ios<_CharT, _Traits>::rdbuf(basic_streambuf<char_type, traits_type>* __sb) {
672 basic_streambuf<char_type, traits_type>* __r = rdbuf();
673 ios_base::rdbuf(__sb);
674 return __r;
675}
676
677template <class _CharT, class _Traits>
678inline _LIBCPP_HIDE_FROM_ABI locale basic_ios<_CharT, _Traits>::imbue(const locale& __loc) {
679 locale __r = getloc();
680 ios_base::imbue(__loc);
681 if (rdbuf())
682 rdbuf()->pubimbue(__loc);
683 return __r;
684}
685
686template <class _CharT, class _Traits>
687inline _LIBCPP_HIDE_FROM_ABI char basic_ios<_CharT, _Traits>::narrow(char_type __c, char __dfault) const {
688 return std::use_facet<ctype<char_type> >(getloc()).narrow(__c, __dfault);
689}
690
691template <class _CharT, class _Traits>
692inline _LIBCPP_HIDE_FROM_ABI _CharT basic_ios<_CharT, _Traits>::widen(char __c) const {
693 return std::use_facet<ctype<char_type> >(getloc()).widen(__c);
694}
695
696template <class _CharT, class _Traits>
697inline _LIBCPP_HIDE_FROM_ABI _CharT basic_ios<_CharT, _Traits>::fill() const {
698 if (!__fill_.__is_set())
699 __fill_ = widen(c: ' ');
700 return __fill_.__get();
701}
702
703template <class _CharT, class _Traits>
704inline _LIBCPP_HIDE_FROM_ABI _CharT basic_ios<_CharT, _Traits>::fill(char_type __ch) {
705 if (!__fill_.__is_set())
706 __fill_ = widen(c: ' ');
707 char_type __r = __fill_.__get();
708 __fill_ = __ch;
709 return __r;
710}
711
712template <class _CharT, class _Traits>
713basic_ios<_CharT, _Traits>& basic_ios<_CharT, _Traits>::copyfmt(const basic_ios& __rhs) {
714 if (this != std::addressof(__rhs)) {
715 __call_callbacks(erase_event);
716 ios_base::copyfmt(__rhs);
717 __tie_ = __rhs.__tie_;
718 __fill_ = __rhs.__fill_;
719 __call_callbacks(copyfmt_event);
720 exceptions(__rhs.exceptions());
721 }
722 return *this;
723}
724
725template <class _CharT, class _Traits>
726inline _LIBCPP_HIDE_FROM_ABI void basic_ios<_CharT, _Traits>::move(basic_ios& __rhs) {
727 ios_base::move(__rhs);
728 __tie_ = __rhs.__tie_;
729 __rhs.__tie_ = nullptr;
730 __fill_ = __rhs.__fill_;
731}
732
733template <class _CharT, class _Traits>
734inline _LIBCPP_HIDE_FROM_ABI void basic_ios<_CharT, _Traits>::swap(basic_ios& __rhs) _NOEXCEPT {
735 ios_base::swap(__rhs);
736 std::swap(__tie_, __rhs.__tie_);
737 std::swap(__fill_, __rhs.__fill_);
738}
739
740template <class _CharT, class _Traits>
741inline _LIBCPP_HIDE_FROM_ABI void basic_ios<_CharT, _Traits>::set_rdbuf(basic_streambuf<char_type, traits_type>* __sb) {
742 ios_base::set_rdbuf(__sb);
743}
744
745extern template class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_ios<char>;
746
747# if _LIBCPP_HAS_WIDE_CHARACTERS
748extern template class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_ios<wchar_t>;
749# endif
750
751_LIBCPP_HIDE_FROM_ABI inline ios_base& boolalpha(ios_base& __str) {
752 __str.setf(ios_base::boolalpha);
753 return __str;
754}
755
756_LIBCPP_HIDE_FROM_ABI inline ios_base& noboolalpha(ios_base& __str) {
757 __str.unsetf(mask: ios_base::boolalpha);
758 return __str;
759}
760
761_LIBCPP_HIDE_FROM_ABI inline ios_base& showbase(ios_base& __str) {
762 __str.setf(ios_base::showbase);
763 return __str;
764}
765
766_LIBCPP_HIDE_FROM_ABI inline ios_base& noshowbase(ios_base& __str) {
767 __str.unsetf(mask: ios_base::showbase);
768 return __str;
769}
770
771_LIBCPP_HIDE_FROM_ABI inline ios_base& showpoint(ios_base& __str) {
772 __str.setf(ios_base::showpoint);
773 return __str;
774}
775
776_LIBCPP_HIDE_FROM_ABI inline ios_base& noshowpoint(ios_base& __str) {
777 __str.unsetf(mask: ios_base::showpoint);
778 return __str;
779}
780
781_LIBCPP_HIDE_FROM_ABI inline ios_base& showpos(ios_base& __str) {
782 __str.setf(ios_base::showpos);
783 return __str;
784}
785
786_LIBCPP_HIDE_FROM_ABI inline ios_base& noshowpos(ios_base& __str) {
787 __str.unsetf(mask: ios_base::showpos);
788 return __str;
789}
790
791_LIBCPP_HIDE_FROM_ABI inline ios_base& skipws(ios_base& __str) {
792 __str.setf(ios_base::skipws);
793 return __str;
794}
795
796_LIBCPP_HIDE_FROM_ABI inline ios_base& noskipws(ios_base& __str) {
797 __str.unsetf(mask: ios_base::skipws);
798 return __str;
799}
800
801_LIBCPP_HIDE_FROM_ABI inline ios_base& uppercase(ios_base& __str) {
802 __str.setf(ios_base::uppercase);
803 return __str;
804}
805
806_LIBCPP_HIDE_FROM_ABI inline ios_base& nouppercase(ios_base& __str) {
807 __str.unsetf(mask: ios_base::uppercase);
808 return __str;
809}
810
811_LIBCPP_HIDE_FROM_ABI inline ios_base& unitbuf(ios_base& __str) {
812 __str.setf(ios_base::unitbuf);
813 return __str;
814}
815
816_LIBCPP_HIDE_FROM_ABI inline ios_base& nounitbuf(ios_base& __str) {
817 __str.unsetf(mask: ios_base::unitbuf);
818 return __str;
819}
820
821_LIBCPP_HIDE_FROM_ABI inline ios_base& internal(ios_base& __str) {
822 __str.setf(fmtfl: ios_base::internal, mask: ios_base::adjustfield);
823 return __str;
824}
825
826_LIBCPP_HIDE_FROM_ABI inline ios_base& left(ios_base& __str) {
827 __str.setf(fmtfl: ios_base::left, mask: ios_base::adjustfield);
828 return __str;
829}
830
831_LIBCPP_HIDE_FROM_ABI inline ios_base& right(ios_base& __str) {
832 __str.setf(fmtfl: ios_base::right, mask: ios_base::adjustfield);
833 return __str;
834}
835
836_LIBCPP_HIDE_FROM_ABI inline ios_base& dec(ios_base& __str) {
837 __str.setf(fmtfl: ios_base::dec, mask: ios_base::basefield);
838 return __str;
839}
840
841_LIBCPP_HIDE_FROM_ABI inline ios_base& hex(ios_base& __str) {
842 __str.setf(fmtfl: ios_base::hex, mask: ios_base::basefield);
843 return __str;
844}
845
846_LIBCPP_HIDE_FROM_ABI inline ios_base& oct(ios_base& __str) {
847 __str.setf(fmtfl: ios_base::oct, mask: ios_base::basefield);
848 return __str;
849}
850
851_LIBCPP_HIDE_FROM_ABI inline ios_base& fixed(ios_base& __str) {
852 __str.setf(fmtfl: ios_base::fixed, mask: ios_base::floatfield);
853 return __str;
854}
855
856_LIBCPP_HIDE_FROM_ABI inline ios_base& scientific(ios_base& __str) {
857 __str.setf(fmtfl: ios_base::scientific, mask: ios_base::floatfield);
858 return __str;
859}
860
861_LIBCPP_HIDE_FROM_ABI inline ios_base& hexfloat(ios_base& __str) {
862 __str.setf(fmtfl: ios_base::fixed | ios_base::scientific, mask: ios_base::floatfield);
863 return __str;
864}
865
866_LIBCPP_HIDE_FROM_ABI inline ios_base& defaultfloat(ios_base& __str) {
867 __str.unsetf(mask: ios_base::floatfield);
868 return __str;
869}
870
871_LIBCPP_END_EXPLICIT_ABI_ANNOTATIONS
872_LIBCPP_END_NAMESPACE_STD
873
874_LIBCPP_POP_MACROS
875
876# endif // _LIBCPP_HAS_LOCALIZATION
877
878# if defined(_LIBCPP_KEEP_TRANSITIVE_INCLUDES_LLVM23) && _LIBCPP_STD_VER <= 23
879# include <ctime>
880# include <ratio>
881# endif
882
883# if defined(_LIBCPP_KEEP_TRANSITIVE_INCLUDES_LLVM23) && _LIBCPP_STD_VER <= 20
884# include <atomic>
885# include <concepts>
886# include <cstddef>
887# include <cstdlib>
888# include <cstring>
889# include <initializer_list>
890# include <limits>
891# include <mutex>
892# include <new>
893# include <optional>
894# include <stdexcept>
895# include <system_error>
896# include <type_traits>
897# include <typeinfo>
898# endif
899#endif // __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
900
901#endif // _LIBCPP_IOS
902