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#include <__config>
215
216#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
217
218# include <__fwd/ios.h>
219# include <__ios/fpos.h>
220# include <__locale>
221# include <__system_error/error_category.h>
222# include <__system_error/error_code.h>
223# include <__system_error/error_condition.h>
224# include <__system_error/system_error.h>
225# include <__utility/swap.h>
226# include <__verbose_abort>
227# include <version>
228
229// standard-mandated includes
230
231// [ios.syn]
232# include <iosfwd>
233
234# if !defined(_LIBCPP_HAS_NO_ATOMIC_HEADER)
235# include <__atomic/atomic.h> // for __xindex_
236# endif
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
247typedef ptrdiff_t streamsize;
248
249class _LIBCPP_EXPORTED_FROM_ABI ios_base {
250public:
251 class _LIBCPP_EXPORTED_FROM_ABI failure;
252
253 typedef unsigned int fmtflags;
254 static const fmtflags boolalpha = 0x0001;
255 static const fmtflags dec = 0x0002;
256 static const fmtflags fixed = 0x0004;
257 static const fmtflags hex = 0x0008;
258 static const fmtflags internal = 0x0010;
259 static const fmtflags left = 0x0020;
260 static const fmtflags oct = 0x0040;
261 static const fmtflags right = 0x0080;
262 static const fmtflags scientific = 0x0100;
263 static const fmtflags showbase = 0x0200;
264 static const fmtflags showpoint = 0x0400;
265 static const fmtflags showpos = 0x0800;
266 static const fmtflags skipws = 0x1000;
267 static const fmtflags unitbuf = 0x2000;
268 static const fmtflags uppercase = 0x4000;
269 static const fmtflags adjustfield = left | right | internal;
270 static const fmtflags basefield = dec | oct | hex;
271 static const fmtflags floatfield = scientific | fixed;
272
273 typedef unsigned int iostate;
274 static const iostate badbit = 0x1;
275 static const iostate eofbit = 0x2;
276 static const iostate failbit = 0x4;
277 static const iostate goodbit = 0x0;
278
279 typedef unsigned int openmode;
280 static const openmode app = 0x01;
281 static const openmode ate = 0x02;
282 static const openmode binary = 0x04;
283 static const openmode in = 0x08;
284 static const openmode out = 0x10;
285 static const openmode trunc = 0x20;
286# if _LIBCPP_STD_VER >= 23
287 static const openmode noreplace = 0x40;
288# endif
289
290 enum seekdir { beg, cur, end };
291
292# if _LIBCPP_STD_VER <= 14
293 typedef iostate io_state;
294 typedef openmode open_mode;
295 typedef seekdir seek_dir;
296
297 typedef std::streamoff streamoff;
298 typedef std::streampos streampos;
299# endif
300
301 class _LIBCPP_EXPORTED_FROM_ABI Init;
302
303 // 27.5.2.2 fmtflags state:
304 _LIBCPP_HIDE_FROM_ABI fmtflags flags() const;
305 _LIBCPP_HIDE_FROM_ABI fmtflags flags(fmtflags __fmtfl);
306 _LIBCPP_HIDE_FROM_ABI fmtflags setf(fmtflags __fmtfl);
307 _LIBCPP_HIDE_FROM_ABI fmtflags setf(fmtflags __fmtfl, fmtflags __mask);
308 _LIBCPP_HIDE_FROM_ABI void unsetf(fmtflags __mask);
309
310 _LIBCPP_HIDE_FROM_ABI streamsize precision() const;
311 _LIBCPP_HIDE_FROM_ABI streamsize precision(streamsize __prec);
312 _LIBCPP_HIDE_FROM_ABI streamsize width() const;
313 _LIBCPP_HIDE_FROM_ABI streamsize width(streamsize __wide);
314
315 // 27.5.2.3 locales:
316 locale imbue(const locale& __loc);
317 locale getloc() const;
318
319 // 27.5.2.5 storage:
320 static int xalloc();
321 long& iword(int __index);
322 void*& pword(int __index);
323
324 // destructor
325 virtual ~ios_base();
326
327 // 27.5.2.6 callbacks;
328 enum event { erase_event, imbue_event, copyfmt_event };
329 typedef void (*event_callback)(event, ios_base&, int __index);
330 void register_callback(event_callback __fn, int __index);
331
332 ios_base(const ios_base&) = delete;
333 ios_base& operator=(const ios_base&) = delete;
334
335 static bool sync_with_stdio(bool __sync = true);
336
337 _LIBCPP_HIDE_FROM_ABI iostate rdstate() const;
338 void clear(iostate __state = goodbit);
339 _LIBCPP_HIDE_FROM_ABI void setstate(iostate __state);
340
341 _LIBCPP_HIDE_FROM_ABI bool good() const;
342 _LIBCPP_HIDE_FROM_ABI bool eof() const;
343 _LIBCPP_HIDE_FROM_ABI bool fail() const;
344 _LIBCPP_HIDE_FROM_ABI bool bad() const;
345
346 _LIBCPP_HIDE_FROM_ABI iostate exceptions() const;
347 _LIBCPP_HIDE_FROM_ABI void exceptions(iostate __iostate);
348
349 void __set_badbit_and_consider_rethrow();
350 void __set_failbit_and_consider_rethrow();
351
352 _LIBCPP_HIDE_FROM_ABI void __setstate_nothrow(iostate __state) {
353 if (__rdbuf_)
354 __rdstate_ |= __state;
355 else
356 __rdstate_ |= __state | ios_base::badbit;
357 }
358
359protected:
360 _LIBCPP_HIDE_FROM_ABI ios_base() : __loc_(nullptr) {
361 // Purposefully does no initialization
362 //
363 // Except for the locale, this is a sentinel to avoid destroying
364 // an uninitialized object. See
365 // test/libcxx/input.output/iostreams.base/ios.base/ios.base.cons/dtor.uninitialized.pass.cpp
366 // for the details.
367 }
368
369 void init(void* __sb);
370 _LIBCPP_HIDE_FROM_ABI void* rdbuf() const { return __rdbuf_; }
371
372 _LIBCPP_HIDE_FROM_ABI void rdbuf(void* __sb) {
373 __rdbuf_ = __sb;
374 clear();
375 }
376
377 void __call_callbacks(event);
378 void copyfmt(const ios_base&);
379 void move(ios_base&);
380 void swap(ios_base&) _NOEXCEPT;
381
382 _LIBCPP_HIDE_FROM_ABI void set_rdbuf(void* __sb) { __rdbuf_ = __sb; }
383
384private:
385 // All data members must be scalars
386 fmtflags __fmtflags_;
387 streamsize __precision_;
388 streamsize __width_;
389 iostate __rdstate_;
390 iostate __exceptions_;
391 void* __rdbuf_;
392 void* __loc_;
393 event_callback* __fn_;
394 int* __index_;
395 size_t __event_size_;
396 size_t __event_cap_;
397// TODO(EricWF): Enable this for both Clang and GCC. Currently it is only
398// enabled with clang.
399# if defined(_LIBCPP_HAS_C_ATOMIC_IMP) && !defined(_LIBCPP_HAS_NO_THREADS)
400 static atomic<int> __xindex_;
401# else
402 static int __xindex_;
403# endif
404 long* __iarray_;
405 size_t __iarray_size_;
406 size_t __iarray_cap_;
407 void** __parray_;
408 size_t __parray_size_;
409 size_t __parray_cap_;
410};
411
412// enum class io_errc
413_LIBCPP_DECLARE_STRONG_ENUM(io_errc){stream = 1};
414_LIBCPP_DECLARE_STRONG_ENUM_EPILOG(io_errc)
415
416template <>
417struct _LIBCPP_TEMPLATE_VIS is_error_code_enum<io_errc> : public true_type {};
418
419# ifdef _LIBCPP_CXX03_LANG
420template <>
421struct _LIBCPP_TEMPLATE_VIS is_error_code_enum<io_errc::__lx> : public true_type {};
422# endif
423
424_LIBCPP_EXPORTED_FROM_ABI const error_category& iostream_category() _NOEXCEPT;
425
426inline _LIBCPP_HIDE_FROM_ABI error_code make_error_code(io_errc __e) _NOEXCEPT {
427 return error_code(static_cast<int>(__e), iostream_category());
428}
429
430inline _LIBCPP_HIDE_FROM_ABI error_condition make_error_condition(io_errc __e) _NOEXCEPT {
431 return error_condition(static_cast<int>(__e), iostream_category());
432}
433
434class _LIBCPP_EXPORTED_FROM_ABI ios_base::failure : public system_error {
435public:
436 explicit failure(const string& __msg, const error_code& __ec = io_errc::stream);
437 explicit failure(const char* __msg, const error_code& __ec = io_errc::stream);
438 _LIBCPP_HIDE_FROM_ABI failure(const failure&) _NOEXCEPT = default;
439 ~failure() _NOEXCEPT override;
440};
441
442_LIBCPP_NORETURN inline _LIBCPP_HIDE_FROM_ABI void __throw_failure(char const* __msg) {
443# ifndef _LIBCPP_HAS_NO_EXCEPTIONS
444 throw ios_base::failure(__msg);
445# else
446 _LIBCPP_VERBOSE_ABORT("ios_base::failure was thrown in -fno-exceptions mode with message \"%s\"", __msg);
447# endif
448}
449
450class _LIBCPP_EXPORTED_FROM_ABI ios_base::Init {
451public:
452 Init();
453 ~Init();
454};
455
456// fmtflags
457
458inline _LIBCPP_HIDE_FROM_ABI ios_base::fmtflags ios_base::flags() const { return __fmtflags_; }
459
460inline _LIBCPP_HIDE_FROM_ABI ios_base::fmtflags ios_base::flags(fmtflags __fmtfl) {
461 fmtflags __r = __fmtflags_;
462 __fmtflags_ = __fmtfl;
463 return __r;
464}
465
466inline _LIBCPP_HIDE_FROM_ABI ios_base::fmtflags ios_base::setf(fmtflags __fmtfl) {
467 fmtflags __r = __fmtflags_;
468 __fmtflags_ |= __fmtfl;
469 return __r;
470}
471
472inline _LIBCPP_HIDE_FROM_ABI void ios_base::unsetf(fmtflags __mask) { __fmtflags_ &= ~__mask; }
473
474inline _LIBCPP_HIDE_FROM_ABI ios_base::fmtflags ios_base::setf(fmtflags __fmtfl, fmtflags __mask) {
475 fmtflags __r = __fmtflags_;
476 unsetf(__mask);
477 __fmtflags_ |= __fmtfl & __mask;
478 return __r;
479}
480
481// precision
482
483inline _LIBCPP_HIDE_FROM_ABI streamsize ios_base::precision() const { return __precision_; }
484
485inline _LIBCPP_HIDE_FROM_ABI streamsize ios_base::precision(streamsize __prec) {
486 streamsize __r = __precision_;
487 __precision_ = __prec;
488 return __r;
489}
490
491// width
492
493inline _LIBCPP_HIDE_FROM_ABI streamsize ios_base::width() const { return __width_; }
494
495inline _LIBCPP_HIDE_FROM_ABI streamsize ios_base::width(streamsize __wide) {
496 streamsize __r = __width_;
497 __width_ = __wide;
498 return __r;
499}
500
501// iostate
502
503inline _LIBCPP_HIDE_FROM_ABI ios_base::iostate ios_base::rdstate() const { return __rdstate_; }
504
505inline _LIBCPP_HIDE_FROM_ABI void ios_base::setstate(iostate __state) { clear(__rdstate_ | __state); }
506
507inline _LIBCPP_HIDE_FROM_ABI bool ios_base::good() const { return __rdstate_ == 0; }
508
509inline _LIBCPP_HIDE_FROM_ABI bool ios_base::eof() const { return (__rdstate_ & eofbit) != 0; }
510
511inline _LIBCPP_HIDE_FROM_ABI bool ios_base::fail() const { return (__rdstate_ & (failbit | badbit)) != 0; }
512
513inline _LIBCPP_HIDE_FROM_ABI bool ios_base::bad() const { return (__rdstate_ & badbit) != 0; }
514
515inline _LIBCPP_HIDE_FROM_ABI ios_base::iostate ios_base::exceptions() const { return __exceptions_; }
516
517inline _LIBCPP_HIDE_FROM_ABI void ios_base::exceptions(iostate __iostate) {
518 __exceptions_ = __iostate;
519 clear(__rdstate_);
520}
521
522template <class _Traits>
523// Attribute 'packed' is used to keep the layout compatible with the previous
524// definition of the '__fill_' and '_set_' pair in basic_ios on AIX & z/OS.
525struct _LIBCPP_PACKED _FillHelper {
526 _LIBCPP_HIDE_FROM_ABI void __init() { __set_ = false; }
527 _LIBCPP_HIDE_FROM_ABI _FillHelper& operator=(typename _Traits::int_type __x) {
528 __set_ = true;
529 __fill_val_ = __x;
530 return *this;
531 }
532 _LIBCPP_HIDE_FROM_ABI bool __is_set() const { return __set_; }
533 _LIBCPP_HIDE_FROM_ABI typename _Traits::int_type __get() const { return __fill_val_; }
534
535private:
536 typename _Traits::int_type __fill_val_;
537 bool __set_;
538};
539
540template <class _Traits>
541struct _LIBCPP_PACKED _SentinelValueFill {
542 _LIBCPP_HIDE_FROM_ABI void __init() { __fill_val_ = _Traits::eof(); }
543 _LIBCPP_HIDE_FROM_ABI _SentinelValueFill& operator=(typename _Traits::int_type __x) {
544 __fill_val_ = __x;
545 return *this;
546 }
547 _LIBCPP_HIDE_FROM_ABI bool __is_set() const { return __fill_val_ != _Traits::eof(); }
548 _LIBCPP_HIDE_FROM_ABI typename _Traits::int_type __get() const { return __fill_val_; }
549
550private:
551 typename _Traits::int_type __fill_val_;
552};
553
554template <class _CharT, class _Traits>
555class _LIBCPP_TEMPLATE_VIS basic_ios : public ios_base {
556public:
557 // types:
558 typedef _CharT char_type;
559 typedef _Traits traits_type;
560
561 typedef typename traits_type::int_type int_type;
562 typedef typename traits_type::pos_type pos_type;
563 typedef typename traits_type::off_type off_type;
564
565 static_assert(is_same<_CharT, typename traits_type::char_type>::value,
566 "traits_type::char_type must be the same type as CharT");
567
568# ifdef _LIBCPP_CXX03_LANG
569 // Preserve the ability to compare with literal 0,
570 // and implicitly convert to bool, but not implicitly convert to int.
571 _LIBCPP_HIDE_FROM_ABI operator void*() const { return fail() ? nullptr : (void*)this; }
572# else
573 _LIBCPP_HIDE_FROM_ABI explicit operator bool() const { return !fail(); }
574# endif
575
576 _LIBCPP_HIDE_FROM_ABI bool operator!() const { return fail(); }
577 _LIBCPP_HIDE_FROM_ABI iostate rdstate() const { return ios_base::rdstate(); }
578 _LIBCPP_HIDE_FROM_ABI void clear(iostate __state = goodbit) { ios_base::clear(__state); }
579 _LIBCPP_HIDE_FROM_ABI void setstate(iostate __state) { ios_base::setstate(__state); }
580 _LIBCPP_HIDE_FROM_ABI bool good() const { return ios_base::good(); }
581 _LIBCPP_HIDE_FROM_ABI bool eof() const { return ios_base::eof(); }
582 _LIBCPP_HIDE_FROM_ABI bool fail() const { return ios_base::fail(); }
583 _LIBCPP_HIDE_FROM_ABI bool bad() const { return ios_base::bad(); }
584
585 _LIBCPP_HIDE_FROM_ABI iostate exceptions() const { return ios_base::exceptions(); }
586 _LIBCPP_HIDE_FROM_ABI void exceptions(iostate __iostate) { ios_base::exceptions(__iostate); }
587
588 // 27.5.4.1 Constructor/destructor:
589 _LIBCPP_HIDE_FROM_ABI explicit basic_ios(basic_streambuf<char_type, traits_type>* __sb);
590 ~basic_ios() override;
591
592 // 27.5.4.2 Members:
593 _LIBCPP_HIDE_FROM_ABI basic_ostream<char_type, traits_type>* tie() const;
594 _LIBCPP_HIDE_FROM_ABI basic_ostream<char_type, traits_type>* tie(basic_ostream<char_type, traits_type>* __tiestr);
595
596 _LIBCPP_HIDE_FROM_ABI basic_streambuf<char_type, traits_type>* rdbuf() const;
597 _LIBCPP_HIDE_FROM_ABI basic_streambuf<char_type, traits_type>* rdbuf(basic_streambuf<char_type, traits_type>* __sb);
598
599 basic_ios& copyfmt(const basic_ios& __rhs);
600
601 _LIBCPP_HIDE_FROM_ABI char_type fill() const;
602 _LIBCPP_HIDE_FROM_ABI char_type fill(char_type __ch);
603
604 _LIBCPP_HIDE_FROM_ABI locale imbue(const locale& __loc);
605
606 _LIBCPP_HIDE_FROM_ABI char narrow(char_type __c, char __dfault) const;
607 _LIBCPP_HIDE_FROM_ABI char_type widen(char __c) const;
608
609protected:
610 _LIBCPP_HIDE_FROM_ABI basic_ios() {
611 // purposefully does no initialization
612 // since the destructor does nothing this does not have ios_base issues.
613 }
614 _LIBCPP_HIDE_FROM_ABI void init(basic_streambuf<char_type, traits_type>* __sb);
615
616 _LIBCPP_HIDE_FROM_ABI void move(basic_ios& __rhs);
617 _LIBCPP_HIDE_FROM_ABI void move(basic_ios&& __rhs) { move(__rhs); }
618 _LIBCPP_HIDE_FROM_ABI void swap(basic_ios& __rhs) _NOEXCEPT;
619 _LIBCPP_HIDE_FROM_ABI void set_rdbuf(basic_streambuf<char_type, traits_type>* __sb);
620
621private:
622 basic_ostream<char_type, traits_type>* __tie_;
623
624#if defined(_LIBCPP_ABI_IOS_ALLOW_ARBITRARY_FILL_VALUE)
625 using _FillType = _FillHelper<traits_type>;
626#else
627 using _FillType = _SentinelValueFill<traits_type>;
628#endif
629 mutable _FillType __fill_;
630};
631
632template <class _CharT, class _Traits>
633inline _LIBCPP_HIDE_FROM_ABI basic_ios<_CharT, _Traits>::basic_ios(basic_streambuf<char_type, traits_type>* __sb) {
634 init(__sb);
635}
636
637template <class _CharT, class _Traits>
638basic_ios<_CharT, _Traits>::~basic_ios() {}
639
640template <class _CharT, class _Traits>
641inline _LIBCPP_HIDE_FROM_ABI void basic_ios<_CharT, _Traits>::init(basic_streambuf<char_type, traits_type>* __sb) {
642 ios_base::init(__sb);
643 __tie_ = nullptr;
644 __fill_.__init();
645}
646
647template <class _CharT, class _Traits>
648inline _LIBCPP_HIDE_FROM_ABI basic_ostream<_CharT, _Traits>* basic_ios<_CharT, _Traits>::tie() const {
649 return __tie_;
650}
651
652template <class _CharT, class _Traits>
653inline _LIBCPP_HIDE_FROM_ABI basic_ostream<_CharT, _Traits>*
654basic_ios<_CharT, _Traits>::tie(basic_ostream<char_type, traits_type>* __tiestr) {
655 basic_ostream<char_type, traits_type>* __r = __tie_;
656 __tie_ = __tiestr;
657 return __r;
658}
659
660template <class _CharT, class _Traits>
661inline _LIBCPP_HIDE_FROM_ABI basic_streambuf<_CharT, _Traits>* basic_ios<_CharT, _Traits>::rdbuf() const {
662 return static_cast<basic_streambuf<char_type, traits_type>*>(ios_base::rdbuf());
663}
664
665template <class _CharT, class _Traits>
666inline _LIBCPP_HIDE_FROM_ABI basic_streambuf<_CharT, _Traits>*
667basic_ios<_CharT, _Traits>::rdbuf(basic_streambuf<char_type, traits_type>* __sb) {
668 basic_streambuf<char_type, traits_type>* __r = rdbuf();
669 ios_base::rdbuf(__sb);
670 return __r;
671}
672
673template <class _CharT, class _Traits>
674inline _LIBCPP_HIDE_FROM_ABI locale basic_ios<_CharT, _Traits>::imbue(const locale& __loc) {
675 locale __r = getloc();
676 ios_base::imbue(__loc);
677 if (rdbuf())
678 rdbuf()->pubimbue(__loc);
679 return __r;
680}
681
682template <class _CharT, class _Traits>
683inline _LIBCPP_HIDE_FROM_ABI char basic_ios<_CharT, _Traits>::narrow(char_type __c, char __dfault) const {
684 return std::use_facet<ctype<char_type> >(getloc()).narrow(__c, __dfault);
685}
686
687template <class _CharT, class _Traits>
688inline _LIBCPP_HIDE_FROM_ABI _CharT basic_ios<_CharT, _Traits>::widen(char __c) const {
689 return std::use_facet<ctype<char_type> >(getloc()).widen(__c);
690}
691
692template <class _CharT, class _Traits>
693inline _LIBCPP_HIDE_FROM_ABI _CharT basic_ios<_CharT, _Traits>::fill() const {
694 if (!__fill_.__is_set())
695 __fill_ = widen(' ');
696 return __fill_.__get();
697}
698
699template <class _CharT, class _Traits>
700inline _LIBCPP_HIDE_FROM_ABI _CharT basic_ios<_CharT, _Traits>::fill(char_type __ch) {
701 if (!__fill_.__is_set())
702 __fill_ = widen(' ');
703 char_type __r = __fill_.__get();
704 __fill_ = __ch;
705 return __r;
706}
707
708template <class _CharT, class _Traits>
709basic_ios<_CharT, _Traits>& basic_ios<_CharT, _Traits>::copyfmt(const basic_ios& __rhs) {
710 if (this != &__rhs) {
711 __call_callbacks(erase_event);
712 ios_base::copyfmt(__rhs);
713 __tie_ = __rhs.__tie_;
714 __fill_ = __rhs.__fill_;
715 __call_callbacks(copyfmt_event);
716 exceptions(__rhs.exceptions());
717 }
718 return *this;
719}
720
721template <class _CharT, class _Traits>
722inline _LIBCPP_HIDE_FROM_ABI void basic_ios<_CharT, _Traits>::move(basic_ios& __rhs) {
723 ios_base::move(__rhs);
724 __tie_ = __rhs.__tie_;
725 __rhs.__tie_ = nullptr;
726 __fill_ = __rhs.__fill_;
727}
728
729template <class _CharT, class _Traits>
730inline _LIBCPP_HIDE_FROM_ABI void basic_ios<_CharT, _Traits>::swap(basic_ios& __rhs) _NOEXCEPT {
731 ios_base::swap(__rhs);
732 std::swap(__tie_, __rhs.__tie_);
733 std::swap(__fill_, __rhs.__fill_);
734}
735
736template <class _CharT, class _Traits>
737inline _LIBCPP_HIDE_FROM_ABI void basic_ios<_CharT, _Traits>::set_rdbuf(basic_streambuf<char_type, traits_type>* __sb) {
738 ios_base::set_rdbuf(__sb);
739}
740
741extern template class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_ios<char>;
742
743# ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
744extern template class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_ios<wchar_t>;
745# endif
746
747_LIBCPP_HIDE_FROM_ABI inline ios_base& boolalpha(ios_base& __str) {
748 __str.setf(ios_base::boolalpha);
749 return __str;
750}
751
752_LIBCPP_HIDE_FROM_ABI inline ios_base& noboolalpha(ios_base& __str) {
753 __str.unsetf(ios_base::boolalpha);
754 return __str;
755}
756
757_LIBCPP_HIDE_FROM_ABI inline ios_base& showbase(ios_base& __str) {
758 __str.setf(ios_base::showbase);
759 return __str;
760}
761
762_LIBCPP_HIDE_FROM_ABI inline ios_base& noshowbase(ios_base& __str) {
763 __str.unsetf(ios_base::showbase);
764 return __str;
765}
766
767_LIBCPP_HIDE_FROM_ABI inline ios_base& showpoint(ios_base& __str) {
768 __str.setf(ios_base::showpoint);
769 return __str;
770}
771
772_LIBCPP_HIDE_FROM_ABI inline ios_base& noshowpoint(ios_base& __str) {
773 __str.unsetf(ios_base::showpoint);
774 return __str;
775}
776
777_LIBCPP_HIDE_FROM_ABI inline ios_base& showpos(ios_base& __str) {
778 __str.setf(ios_base::showpos);
779 return __str;
780}
781
782_LIBCPP_HIDE_FROM_ABI inline ios_base& noshowpos(ios_base& __str) {
783 __str.unsetf(ios_base::showpos);
784 return __str;
785}
786
787_LIBCPP_HIDE_FROM_ABI inline ios_base& skipws(ios_base& __str) {
788 __str.setf(ios_base::skipws);
789 return __str;
790}
791
792_LIBCPP_HIDE_FROM_ABI inline ios_base& noskipws(ios_base& __str) {
793 __str.unsetf(ios_base::skipws);
794 return __str;
795}
796
797_LIBCPP_HIDE_FROM_ABI inline ios_base& uppercase(ios_base& __str) {
798 __str.setf(ios_base::uppercase);
799 return __str;
800}
801
802_LIBCPP_HIDE_FROM_ABI inline ios_base& nouppercase(ios_base& __str) {
803 __str.unsetf(ios_base::uppercase);
804 return __str;
805}
806
807_LIBCPP_HIDE_FROM_ABI inline ios_base& unitbuf(ios_base& __str) {
808 __str.setf(ios_base::unitbuf);
809 return __str;
810}
811
812_LIBCPP_HIDE_FROM_ABI inline ios_base& nounitbuf(ios_base& __str) {
813 __str.unsetf(ios_base::unitbuf);
814 return __str;
815}
816
817_LIBCPP_HIDE_FROM_ABI inline ios_base& internal(ios_base& __str) {
818 __str.setf(ios_base::internal, ios_base::adjustfield);
819 return __str;
820}
821
822_LIBCPP_HIDE_FROM_ABI inline ios_base& left(ios_base& __str) {
823 __str.setf(ios_base::left, ios_base::adjustfield);
824 return __str;
825}
826
827_LIBCPP_HIDE_FROM_ABI inline ios_base& right(ios_base& __str) {
828 __str.setf(ios_base::right, ios_base::adjustfield);
829 return __str;
830}
831
832_LIBCPP_HIDE_FROM_ABI inline ios_base& dec(ios_base& __str) {
833 __str.setf(ios_base::dec, ios_base::basefield);
834 return __str;
835}
836
837_LIBCPP_HIDE_FROM_ABI inline ios_base& hex(ios_base& __str) {
838 __str.setf(ios_base::hex, ios_base::basefield);
839 return __str;
840}
841
842_LIBCPP_HIDE_FROM_ABI inline ios_base& oct(ios_base& __str) {
843 __str.setf(ios_base::oct, ios_base::basefield);
844 return __str;
845}
846
847_LIBCPP_HIDE_FROM_ABI inline ios_base& fixed(ios_base& __str) {
848 __str.setf(ios_base::fixed, ios_base::floatfield);
849 return __str;
850}
851
852_LIBCPP_HIDE_FROM_ABI inline ios_base& scientific(ios_base& __str) {
853 __str.setf(ios_base::scientific, ios_base::floatfield);
854 return __str;
855}
856
857_LIBCPP_HIDE_FROM_ABI inline ios_base& hexfloat(ios_base& __str) {
858 __str.setf(ios_base::fixed | ios_base::scientific, ios_base::floatfield);
859 return __str;
860}
861
862_LIBCPP_HIDE_FROM_ABI inline ios_base& defaultfloat(ios_base& __str) {
863 __str.unsetf(ios_base::floatfield);
864 return __str;
865}
866
867_LIBCPP_END_NAMESPACE_STD
868
869_LIBCPP_POP_MACROS
870
871#endif // !defined(_LIBCPP_HAS_NO_LOCALIZATION)
872
873#if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
874# include <atomic>
875# include <concepts>
876# include <cstddef>
877# include <cstdlib>
878# include <cstring>
879# include <initializer_list>
880# include <limits>
881# include <mutex>
882# include <new>
883# include <stdexcept>
884# include <system_error>
885# include <type_traits>
886# include <typeinfo>
887#endif
888
889#endif // _LIBCPP_IOS
890