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 _LIBCPP_HAS_ATOMIC_HEADER
239# include <__atomic/atomic.h> // for __xindex_
240# endif
241
242# if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
243# pragma GCC system_header
244# endif
245
246_LIBCPP_PUSH_MACROS
247# include <__undef_macros>
248
249_LIBCPP_BEGIN_NAMESPACE_STD
250
251typedef ptrdiff_t streamsize;
252
253class _LIBCPP_EXPORTED_FROM_ABI ios_base {
254public:
255 class _LIBCPP_EXPORTED_FROM_ABI failure;
256
257 typedef unsigned int fmtflags;
258 static const fmtflags boolalpha = 0x0001;
259 static const fmtflags dec = 0x0002;
260 static const fmtflags fixed = 0x0004;
261 static const fmtflags hex = 0x0008;
262 static const fmtflags internal = 0x0010;
263 static const fmtflags left = 0x0020;
264 static const fmtflags oct = 0x0040;
265 static const fmtflags right = 0x0080;
266 static const fmtflags scientific = 0x0100;
267 static const fmtflags showbase = 0x0200;
268 static const fmtflags showpoint = 0x0400;
269 static const fmtflags showpos = 0x0800;
270 static const fmtflags skipws = 0x1000;
271 static const fmtflags unitbuf = 0x2000;
272 static const fmtflags uppercase = 0x4000;
273 static const fmtflags adjustfield = left | right | internal;
274 static const fmtflags basefield = dec | oct | hex;
275 static const fmtflags floatfield = scientific | fixed;
276
277 typedef unsigned int iostate;
278 static const iostate badbit = 0x1;
279 static const iostate eofbit = 0x2;
280 static const iostate failbit = 0x4;
281 static const iostate goodbit = 0x0;
282
283 typedef unsigned int openmode;
284 static const openmode app = 0x01;
285 static const openmode ate = 0x02;
286 static const openmode binary = 0x04;
287 static const openmode in = 0x08;
288 static const openmode out = 0x10;
289 static const openmode trunc = 0x20;
290# if _LIBCPP_STD_VER >= 23
291 static const openmode noreplace = 0x40;
292# endif
293
294 enum seekdir { beg, cur, end };
295
296# if _LIBCPP_STD_VER <= 14
297 typedef iostate io_state;
298 typedef openmode open_mode;
299 typedef seekdir seek_dir;
300
301 typedef std::streamoff streamoff;
302 typedef std::streampos streampos;
303# endif
304
305 class _LIBCPP_EXPORTED_FROM_ABI Init;
306
307 // 27.5.2.2 fmtflags state:
308 _LIBCPP_HIDE_FROM_ABI fmtflags flags() const;
309 _LIBCPP_HIDE_FROM_ABI fmtflags flags(fmtflags __fmtfl);
310 _LIBCPP_HIDE_FROM_ABI fmtflags setf(fmtflags __fmtfl);
311 _LIBCPP_HIDE_FROM_ABI fmtflags setf(fmtflags __fmtfl, fmtflags __mask);
312 _LIBCPP_HIDE_FROM_ABI void unsetf(fmtflags __mask);
313
314 _LIBCPP_HIDE_FROM_ABI streamsize precision() const;
315 _LIBCPP_HIDE_FROM_ABI streamsize precision(streamsize __prec);
316 _LIBCPP_HIDE_FROM_ABI streamsize width() const;
317 _LIBCPP_HIDE_FROM_ABI streamsize width(streamsize __wide);
318
319 // 27.5.2.3 locales:
320 locale imbue(const locale& __loc);
321 locale getloc() const;
322
323 // 27.5.2.5 storage:
324 static int xalloc();
325 long& iword(int __index);
326 void*& pword(int __index);
327
328 // destructor
329 virtual ~ios_base();
330
331 // 27.5.2.6 callbacks;
332 enum event { erase_event, imbue_event, copyfmt_event };
333 typedef void (*event_callback)(event, ios_base&, int __index);
334 void register_callback(event_callback __fn, int __index);
335
336 ios_base(const ios_base&) = delete;
337 ios_base& operator=(const ios_base&) = delete;
338
339 static bool sync_with_stdio(bool __sync = true);
340
341 _LIBCPP_HIDE_FROM_ABI iostate rdstate() const;
342 void clear(iostate __state = goodbit);
343 _LIBCPP_HIDE_FROM_ABI void setstate(iostate __state);
344
345 _LIBCPP_HIDE_FROM_ABI bool good() const;
346 _LIBCPP_HIDE_FROM_ABI bool eof() const;
347 _LIBCPP_HIDE_FROM_ABI bool fail() const;
348 _LIBCPP_HIDE_FROM_ABI bool bad() const;
349
350 _LIBCPP_HIDE_FROM_ABI iostate exceptions() const;
351 _LIBCPP_HIDE_FROM_ABI void exceptions(iostate __iostate);
352
353 void __set_badbit_and_consider_rethrow();
354 void __set_failbit_and_consider_rethrow();
355
356 _LIBCPP_HIDE_FROM_ABI void __setstate_nothrow(iostate __state) {
357 if (__rdbuf_)
358 __rdstate_ |= __state;
359 else
360 __rdstate_ |= __state | ios_base::badbit;
361 }
362
363protected:
364 _LIBCPP_HIDE_FROM_ABI ios_base() : __loc_(nullptr) {
365 // Purposefully does no initialization
366 //
367 // Except for the locale, this is a sentinel to avoid destroying
368 // an uninitialized object. See
369 // test/libcxx/input.output/iostreams.base/ios.base/ios.base.cons/dtor.uninitialized.pass.cpp
370 // for the details.
371 }
372
373 void init(void* __sb);
374 _LIBCPP_HIDE_FROM_ABI void* rdbuf() const { return __rdbuf_; }
375
376 _LIBCPP_HIDE_FROM_ABI void rdbuf(void* __sb) {
377 __rdbuf_ = __sb;
378 clear();
379 }
380
381 void __call_callbacks(event);
382 void copyfmt(const ios_base&);
383 void move(ios_base&);
384 void swap(ios_base&) _NOEXCEPT;
385
386 _LIBCPP_HIDE_FROM_ABI void set_rdbuf(void* __sb) { __rdbuf_ = __sb; }
387
388private:
389 // All data members must be scalars
390 fmtflags __fmtflags_;
391 streamsize __precision_;
392 streamsize __width_;
393 iostate __rdstate_;
394 iostate __exceptions_;
395 void* __rdbuf_;
396 void* __loc_;
397 event_callback* __fn_;
398 int* __index_;
399 size_t __event_size_;
400 size_t __event_cap_;
401// TODO(EricWF): Enable this for both Clang and GCC. Currently it is only
402// enabled with clang.
403# if _LIBCPP_HAS_C_ATOMIC_IMP && _LIBCPP_HAS_THREADS
404 static atomic<int> __xindex_;
405# else
406 static int __xindex_;
407# endif
408 long* __iarray_;
409 size_t __iarray_size_;
410 size_t __iarray_cap_;
411 void** __parray_;
412 size_t __parray_size_;
413 size_t __parray_cap_;
414};
415
416// enum class io_errc
417_LIBCPP_DECLARE_STRONG_ENUM(io_errc){stream = 1};
418_LIBCPP_DECLARE_STRONG_ENUM_EPILOG(io_errc)
419
420template <>
421struct is_error_code_enum<io_errc> : public true_type {};
422
423# ifdef _LIBCPP_CXX03_LANG
424template <>
425struct is_error_code_enum<io_errc::__lx> : public true_type {};
426# endif
427
428_LIBCPP_EXPORTED_FROM_ABI const error_category& iostream_category() _NOEXCEPT;
429
430inline _LIBCPP_HIDE_FROM_ABI error_code make_error_code(io_errc __e) _NOEXCEPT {
431 return error_code(static_cast<int>(__e), iostream_category());
432}
433
434inline _LIBCPP_HIDE_FROM_ABI error_condition make_error_condition(io_errc __e) _NOEXCEPT {
435 return error_condition(static_cast<int>(__e), iostream_category());
436}
437
438class _LIBCPP_EXPORTED_FROM_ABI ios_base::failure : public system_error {
439public:
440 explicit failure(const string& __msg, const error_code& __ec = io_errc::stream);
441 explicit failure(const char* __msg, const error_code& __ec = io_errc::stream);
442 _LIBCPP_HIDE_FROM_ABI failure(const failure&) _NOEXCEPT = default;
443 ~failure() _NOEXCEPT override;
444};
445
446[[__noreturn__]] inline _LIBCPP_HIDE_FROM_ABI void __throw_failure(char const* __msg) {
447# if _LIBCPP_HAS_EXCEPTIONS
448 throw ios_base::failure(__msg);
449# else
450 _LIBCPP_VERBOSE_ABORT("ios_base::failure was thrown in -fno-exceptions mode with message \"%s\"", __msg);
451# endif
452}
453
454class _LIBCPP_EXPORTED_FROM_ABI ios_base::Init {
455public:
456 Init();
457 ~Init();
458};
459
460// fmtflags
461
462inline _LIBCPP_HIDE_FROM_ABI ios_base::fmtflags ios_base::flags() const { return __fmtflags_; }
463
464inline _LIBCPP_HIDE_FROM_ABI ios_base::fmtflags ios_base::flags(fmtflags __fmtfl) {
465 fmtflags __r = __fmtflags_;
466 __fmtflags_ = __fmtfl;
467 return __r;
468}
469
470inline _LIBCPP_HIDE_FROM_ABI ios_base::fmtflags ios_base::setf(fmtflags __fmtfl) {
471 fmtflags __r = __fmtflags_;
472 __fmtflags_ |= __fmtfl;
473 return __r;
474}
475
476inline _LIBCPP_HIDE_FROM_ABI void ios_base::unsetf(fmtflags __mask) { __fmtflags_ &= ~__mask; }
477
478inline _LIBCPP_HIDE_FROM_ABI ios_base::fmtflags ios_base::setf(fmtflags __fmtfl, fmtflags __mask) {
479 fmtflags __r = __fmtflags_;
480 unsetf(__mask);
481 __fmtflags_ |= __fmtfl & __mask;
482 return __r;
483}
484
485// precision
486
487inline _LIBCPP_HIDE_FROM_ABI streamsize ios_base::precision() const { return __precision_; }
488
489inline _LIBCPP_HIDE_FROM_ABI streamsize ios_base::precision(streamsize __prec) {
490 streamsize __r = __precision_;
491 __precision_ = __prec;
492 return __r;
493}
494
495// width
496
497inline _LIBCPP_HIDE_FROM_ABI streamsize ios_base::width() const { return __width_; }
498
499inline _LIBCPP_HIDE_FROM_ABI streamsize ios_base::width(streamsize __wide) {
500 streamsize __r = __width_;
501 __width_ = __wide;
502 return __r;
503}
504
505// iostate
506
507inline _LIBCPP_HIDE_FROM_ABI ios_base::iostate ios_base::rdstate() const { return __rdstate_; }
508
509inline _LIBCPP_HIDE_FROM_ABI void ios_base::setstate(iostate __state) { clear(state: __rdstate_ | __state); }
510
511inline _LIBCPP_HIDE_FROM_ABI bool ios_base::good() const { return __rdstate_ == 0; }
512
513inline _LIBCPP_HIDE_FROM_ABI bool ios_base::eof() const { return (__rdstate_ & eofbit) != 0; }
514
515inline _LIBCPP_HIDE_FROM_ABI bool ios_base::fail() const { return (__rdstate_ & (failbit | badbit)) != 0; }
516
517inline _LIBCPP_HIDE_FROM_ABI bool ios_base::bad() const { return (__rdstate_ & badbit) != 0; }
518
519inline _LIBCPP_HIDE_FROM_ABI ios_base::iostate ios_base::exceptions() const { return __exceptions_; }
520
521inline _LIBCPP_HIDE_FROM_ABI void ios_base::exceptions(iostate __iostate) {
522 __exceptions_ = __iostate;
523 clear(state: __rdstate_);
524}
525
526template <class _Traits>
527// Attribute 'packed' is used to keep the layout compatible with the previous
528// definition of the '__fill_' and '_set_' pair in basic_ios on AIX & z/OS.
529struct _LIBCPP_PACKED _FillHelper {
530 _LIBCPP_HIDE_FROM_ABI void __init() {
531 __set_ = false;
532 __fill_val_ = _Traits::eof();
533 }
534 _LIBCPP_HIDE_FROM_ABI _FillHelper& operator=(typename _Traits::int_type __x) {
535 __set_ = true;
536 __fill_val_ = __x;
537 return *this;
538 }
539 _LIBCPP_HIDE_FROM_ABI bool __is_set() const { return __set_; }
540 _LIBCPP_HIDE_FROM_ABI typename _Traits::int_type __get() const { return __fill_val_; }
541
542private:
543 typename _Traits::int_type __fill_val_;
544 bool __set_;
545};
546
547template <class _Traits>
548struct _LIBCPP_PACKED _SentinelValueFill {
549 _LIBCPP_HIDE_FROM_ABI void __init() { __fill_val_ = _Traits::eof(); }
550 _LIBCPP_HIDE_FROM_ABI _SentinelValueFill& operator=(typename _Traits::int_type __x) {
551 __fill_val_ = __x;
552 return *this;
553 }
554 _LIBCPP_HIDE_FROM_ABI bool __is_set() const { return __fill_val_ != _Traits::eof(); }
555 _LIBCPP_HIDE_FROM_ABI typename _Traits::int_type __get() const { return __fill_val_; }
556
557private:
558 typename _Traits::int_type __fill_val_;
559};
560
561template <class _CharT, class _Traits>
562class basic_ios : public ios_base {
563public:
564 // types:
565 typedef _CharT char_type;
566 typedef _Traits traits_type;
567
568 typedef typename traits_type::int_type int_type;
569 typedef typename traits_type::pos_type pos_type;
570 typedef typename traits_type::off_type off_type;
571
572 static_assert(is_same<_CharT, typename traits_type::char_type>::value,
573 "traits_type::char_type must be the same type as CharT");
574
575# ifdef _LIBCPP_CXX03_LANG
576 // Preserve the ability to compare with literal 0,
577 // and implicitly convert to bool, but not implicitly convert to int.
578 _LIBCPP_HIDE_FROM_ABI operator void*() const { return fail() ? nullptr : (void*)this; }
579# else
580 _LIBCPP_HIDE_FROM_ABI explicit operator bool() const { return !fail(); }
581# endif
582
583 _LIBCPP_HIDE_FROM_ABI bool operator!() const { return fail(); }
584 _LIBCPP_HIDE_FROM_ABI iostate rdstate() const { return ios_base::rdstate(); }
585 _LIBCPP_HIDE_FROM_ABI void clear(iostate __state = goodbit) { ios_base::clear(__state); }
586 _LIBCPP_HIDE_FROM_ABI void setstate(iostate __state) { ios_base::setstate(__state); }
587 _LIBCPP_HIDE_FROM_ABI bool good() const { return ios_base::good(); }
588 _LIBCPP_HIDE_FROM_ABI bool eof() const { return ios_base::eof(); }
589 _LIBCPP_HIDE_FROM_ABI bool fail() const { return ios_base::fail(); }
590 _LIBCPP_HIDE_FROM_ABI bool bad() const { return ios_base::bad(); }
591
592 _LIBCPP_HIDE_FROM_ABI iostate exceptions() const { return ios_base::exceptions(); }
593 _LIBCPP_HIDE_FROM_ABI void exceptions(iostate __iostate) { ios_base::exceptions(__iostate); }
594
595 // 27.5.4.1 Constructor/destructor:
596 _LIBCPP_HIDE_FROM_ABI explicit basic_ios(basic_streambuf<char_type, traits_type>* __sb);
597 ~basic_ios() override;
598
599 // 27.5.4.2 Members:
600 _LIBCPP_HIDE_FROM_ABI basic_ostream<char_type, traits_type>* tie() const;
601 _LIBCPP_HIDE_FROM_ABI basic_ostream<char_type, traits_type>* tie(basic_ostream<char_type, traits_type>* __tiestr);
602
603 _LIBCPP_HIDE_FROM_ABI basic_streambuf<char_type, traits_type>* rdbuf() const;
604 _LIBCPP_HIDE_FROM_ABI basic_streambuf<char_type, traits_type>* rdbuf(basic_streambuf<char_type, traits_type>* __sb);
605
606 basic_ios& copyfmt(const basic_ios& __rhs);
607
608 _LIBCPP_HIDE_FROM_ABI char_type fill() const;
609 _LIBCPP_HIDE_FROM_ABI char_type fill(char_type __ch);
610
611 _LIBCPP_HIDE_FROM_ABI locale imbue(const locale& __loc);
612
613 _LIBCPP_HIDE_FROM_ABI char narrow(char_type __c, char __dfault) const;
614 _LIBCPP_HIDE_FROM_ABI char_type widen(char __c) const;
615
616protected:
617 _LIBCPP_HIDE_FROM_ABI basic_ios() {
618 // purposefully does no initialization
619 // since the destructor does nothing this does not have ios_base issues.
620 }
621 _LIBCPP_HIDE_FROM_ABI void init(basic_streambuf<char_type, traits_type>* __sb);
622
623 _LIBCPP_HIDE_FROM_ABI void move(basic_ios& __rhs);
624 _LIBCPP_HIDE_FROM_ABI void move(basic_ios&& __rhs) { move(__rhs); }
625 _LIBCPP_HIDE_FROM_ABI void swap(basic_ios& __rhs) _NOEXCEPT;
626 _LIBCPP_HIDE_FROM_ABI void set_rdbuf(basic_streambuf<char_type, traits_type>* __sb);
627
628private:
629 basic_ostream<char_type, traits_type>* __tie_;
630
631# if defined(_LIBCPP_ABI_IOS_ALLOW_ARBITRARY_FILL_VALUE)
632 using _FillType _LIBCPP_NODEBUG = _FillHelper<traits_type>;
633# else
634 using _FillType _LIBCPP_NODEBUG = _SentinelValueFill<traits_type>;
635# endif
636 mutable _FillType __fill_;
637};
638
639template <class _CharT, class _Traits>
640inline _LIBCPP_HIDE_FROM_ABI basic_ios<_CharT, _Traits>::basic_ios(basic_streambuf<char_type, traits_type>* __sb) {
641 init(__sb);
642}
643
644template <class _CharT, class _Traits>
645basic_ios<_CharT, _Traits>::~basic_ios() {}
646
647template <class _CharT, class _Traits>
648inline _LIBCPP_HIDE_FROM_ABI void basic_ios<_CharT, _Traits>::init(basic_streambuf<char_type, traits_type>* __sb) {
649 ios_base::init(__sb);
650 __tie_ = nullptr;
651 __fill_.__init();
652}
653
654template <class _CharT, class _Traits>
655inline _LIBCPP_HIDE_FROM_ABI basic_ostream<_CharT, _Traits>* basic_ios<_CharT, _Traits>::tie() const {
656 return __tie_;
657}
658
659template <class _CharT, class _Traits>
660inline _LIBCPP_HIDE_FROM_ABI basic_ostream<_CharT, _Traits>*
661basic_ios<_CharT, _Traits>::tie(basic_ostream<char_type, traits_type>* __tiestr) {
662 basic_ostream<char_type, traits_type>* __r = __tie_;
663 __tie_ = __tiestr;
664 return __r;
665}
666
667template <class _CharT, class _Traits>
668inline _LIBCPP_HIDE_FROM_ABI basic_streambuf<_CharT, _Traits>* basic_ios<_CharT, _Traits>::rdbuf() const {
669 return static_cast<basic_streambuf<char_type, traits_type>*>(ios_base::rdbuf());
670}
671
672template <class _CharT, class _Traits>
673inline _LIBCPP_HIDE_FROM_ABI basic_streambuf<_CharT, _Traits>*
674basic_ios<_CharT, _Traits>::rdbuf(basic_streambuf<char_type, traits_type>* __sb) {
675 basic_streambuf<char_type, traits_type>* __r = rdbuf();
676 ios_base::rdbuf(__sb);
677 return __r;
678}
679
680template <class _CharT, class _Traits>
681inline _LIBCPP_HIDE_FROM_ABI locale basic_ios<_CharT, _Traits>::imbue(const locale& __loc) {
682 locale __r = getloc();
683 ios_base::imbue(__loc);
684 if (rdbuf())
685 rdbuf()->pubimbue(__loc);
686 return __r;
687}
688
689template <class _CharT, class _Traits>
690inline _LIBCPP_HIDE_FROM_ABI char basic_ios<_CharT, _Traits>::narrow(char_type __c, char __dfault) const {
691 return std::use_facet<ctype<char_type> >(getloc()).narrow(__c, __dfault);
692}
693
694template <class _CharT, class _Traits>
695inline _LIBCPP_HIDE_FROM_ABI _CharT basic_ios<_CharT, _Traits>::widen(char __c) const {
696 return std::use_facet<ctype<char_type> >(getloc()).widen(__c);
697}
698
699template <class _CharT, class _Traits>
700inline _LIBCPP_HIDE_FROM_ABI _CharT basic_ios<_CharT, _Traits>::fill() const {
701 if (!__fill_.__is_set())
702 __fill_ = widen(c: ' ');
703 return __fill_.__get();
704}
705
706template <class _CharT, class _Traits>
707inline _LIBCPP_HIDE_FROM_ABI _CharT basic_ios<_CharT, _Traits>::fill(char_type __ch) {
708 if (!__fill_.__is_set())
709 __fill_ = widen(c: ' ');
710 char_type __r = __fill_.__get();
711 __fill_ = __ch;
712 return __r;
713}
714
715template <class _CharT, class _Traits>
716basic_ios<_CharT, _Traits>& basic_ios<_CharT, _Traits>::copyfmt(const basic_ios& __rhs) {
717 if (this != std::addressof(__rhs)) {
718 __call_callbacks(erase_event);
719 ios_base::copyfmt(__rhs);
720 __tie_ = __rhs.__tie_;
721 __fill_ = __rhs.__fill_;
722 __call_callbacks(copyfmt_event);
723 exceptions(__rhs.exceptions());
724 }
725 return *this;
726}
727
728template <class _CharT, class _Traits>
729inline _LIBCPP_HIDE_FROM_ABI void basic_ios<_CharT, _Traits>::move(basic_ios& __rhs) {
730 ios_base::move(__rhs);
731 __tie_ = __rhs.__tie_;
732 __rhs.__tie_ = nullptr;
733 __fill_ = __rhs.__fill_;
734}
735
736template <class _CharT, class _Traits>
737inline _LIBCPP_HIDE_FROM_ABI void basic_ios<_CharT, _Traits>::swap(basic_ios& __rhs) _NOEXCEPT {
738 ios_base::swap(__rhs);
739 std::swap(__tie_, __rhs.__tie_);
740 std::swap(__fill_, __rhs.__fill_);
741}
742
743template <class _CharT, class _Traits>
744inline _LIBCPP_HIDE_FROM_ABI void basic_ios<_CharT, _Traits>::set_rdbuf(basic_streambuf<char_type, traits_type>* __sb) {
745 ios_base::set_rdbuf(__sb);
746}
747
748extern template class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_ios<char>;
749
750# if _LIBCPP_HAS_WIDE_CHARACTERS
751extern template class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_ios<wchar_t>;
752# endif
753
754_LIBCPP_HIDE_FROM_ABI inline ios_base& boolalpha(ios_base& __str) {
755 __str.setf(ios_base::boolalpha);
756 return __str;
757}
758
759_LIBCPP_HIDE_FROM_ABI inline ios_base& noboolalpha(ios_base& __str) {
760 __str.unsetf(mask: ios_base::boolalpha);
761 return __str;
762}
763
764_LIBCPP_HIDE_FROM_ABI inline ios_base& showbase(ios_base& __str) {
765 __str.setf(ios_base::showbase);
766 return __str;
767}
768
769_LIBCPP_HIDE_FROM_ABI inline ios_base& noshowbase(ios_base& __str) {
770 __str.unsetf(mask: ios_base::showbase);
771 return __str;
772}
773
774_LIBCPP_HIDE_FROM_ABI inline ios_base& showpoint(ios_base& __str) {
775 __str.setf(ios_base::showpoint);
776 return __str;
777}
778
779_LIBCPP_HIDE_FROM_ABI inline ios_base& noshowpoint(ios_base& __str) {
780 __str.unsetf(mask: ios_base::showpoint);
781 return __str;
782}
783
784_LIBCPP_HIDE_FROM_ABI inline ios_base& showpos(ios_base& __str) {
785 __str.setf(ios_base::showpos);
786 return __str;
787}
788
789_LIBCPP_HIDE_FROM_ABI inline ios_base& noshowpos(ios_base& __str) {
790 __str.unsetf(mask: ios_base::showpos);
791 return __str;
792}
793
794_LIBCPP_HIDE_FROM_ABI inline ios_base& skipws(ios_base& __str) {
795 __str.setf(ios_base::skipws);
796 return __str;
797}
798
799_LIBCPP_HIDE_FROM_ABI inline ios_base& noskipws(ios_base& __str) {
800 __str.unsetf(mask: ios_base::skipws);
801 return __str;
802}
803
804_LIBCPP_HIDE_FROM_ABI inline ios_base& uppercase(ios_base& __str) {
805 __str.setf(ios_base::uppercase);
806 return __str;
807}
808
809_LIBCPP_HIDE_FROM_ABI inline ios_base& nouppercase(ios_base& __str) {
810 __str.unsetf(mask: ios_base::uppercase);
811 return __str;
812}
813
814_LIBCPP_HIDE_FROM_ABI inline ios_base& unitbuf(ios_base& __str) {
815 __str.setf(ios_base::unitbuf);
816 return __str;
817}
818
819_LIBCPP_HIDE_FROM_ABI inline ios_base& nounitbuf(ios_base& __str) {
820 __str.unsetf(mask: ios_base::unitbuf);
821 return __str;
822}
823
824_LIBCPP_HIDE_FROM_ABI inline ios_base& internal(ios_base& __str) {
825 __str.setf(fmtfl: ios_base::internal, mask: ios_base::adjustfield);
826 return __str;
827}
828
829_LIBCPP_HIDE_FROM_ABI inline ios_base& left(ios_base& __str) {
830 __str.setf(fmtfl: ios_base::left, mask: ios_base::adjustfield);
831 return __str;
832}
833
834_LIBCPP_HIDE_FROM_ABI inline ios_base& right(ios_base& __str) {
835 __str.setf(fmtfl: ios_base::right, mask: ios_base::adjustfield);
836 return __str;
837}
838
839_LIBCPP_HIDE_FROM_ABI inline ios_base& dec(ios_base& __str) {
840 __str.setf(fmtfl: ios_base::dec, mask: ios_base::basefield);
841 return __str;
842}
843
844_LIBCPP_HIDE_FROM_ABI inline ios_base& hex(ios_base& __str) {
845 __str.setf(fmtfl: ios_base::hex, mask: ios_base::basefield);
846 return __str;
847}
848
849_LIBCPP_HIDE_FROM_ABI inline ios_base& oct(ios_base& __str) {
850 __str.setf(fmtfl: ios_base::oct, mask: ios_base::basefield);
851 return __str;
852}
853
854_LIBCPP_HIDE_FROM_ABI inline ios_base& fixed(ios_base& __str) {
855 __str.setf(fmtfl: ios_base::fixed, mask: ios_base::floatfield);
856 return __str;
857}
858
859_LIBCPP_HIDE_FROM_ABI inline ios_base& scientific(ios_base& __str) {
860 __str.setf(fmtfl: ios_base::scientific, mask: ios_base::floatfield);
861 return __str;
862}
863
864_LIBCPP_HIDE_FROM_ABI inline ios_base& hexfloat(ios_base& __str) {
865 __str.setf(fmtfl: ios_base::fixed | ios_base::scientific, mask: ios_base::floatfield);
866 return __str;
867}
868
869_LIBCPP_HIDE_FROM_ABI inline ios_base& defaultfloat(ios_base& __str) {
870 __str.unsetf(mask: ios_base::floatfield);
871 return __str;
872}
873
874_LIBCPP_END_NAMESPACE_STD
875
876_LIBCPP_POP_MACROS
877
878# endif // _LIBCPP_HAS_LOCALIZATION
879
880# if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
881# include <atomic>
882# include <concepts>
883# include <cstddef>
884# include <cstdlib>
885# include <cstring>
886# include <initializer_list>
887# include <limits>
888# include <mutex>
889# include <new>
890# include <optional>
891# include <stdexcept>
892# include <system_error>
893# include <type_traits>
894# include <typeinfo>
895# endif
896#endif // __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
897
898#endif // _LIBCPP_IOS
899