1// -*- C++ -*-
2//===---------------------------- ios -------------------------------------===//
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 out;
62 static constexpr openmode trunc;
63
64 typedef T4 seekdir;
65 static constexpr seekdir beg;
66 static constexpr seekdir cur;
67 static constexpr seekdir end;
68
69 class Init;
70
71 // 27.5.2.2 fmtflags state:
72 fmtflags flags() const;
73 fmtflags flags(fmtflags fmtfl);
74 fmtflags setf(fmtflags fmtfl);
75 fmtflags setf(fmtflags fmtfl, fmtflags mask);
76 void unsetf(fmtflags mask);
77
78 streamsize precision() const;
79 streamsize precision(streamsize prec);
80 streamsize width() const;
81 streamsize width(streamsize wide);
82
83 // 27.5.2.3 locales:
84 locale imbue(const locale& loc);
85 locale getloc() const;
86
87 // 27.5.2.5 storage:
88 static int xalloc();
89 long& iword(int index);
90 void*& pword(int index);
91
92 // destructor
93 virtual ~ios_base();
94
95 // 27.5.2.6 callbacks;
96 enum event { erase_event, imbue_event, copyfmt_event };
97 typedef void (*event_callback)(event, ios_base&, int index);
98 void register_callback(event_callback fn, int index);
99
100 ios_base(const ios_base&) = delete;
101 ios_base& operator=(const ios_base&) = delete;
102
103 static bool sync_with_stdio(bool sync = true);
104
105protected:
106 ios_base();
107};
108
109template <class charT, class traits = char_traits<charT> >
110class basic_ios
111 : public ios_base
112{
113public:
114 // types:
115 typedef charT char_type;
116 typedef typename traits::int_type int_type; // removed in C++17
117 typedef typename traits::pos_type pos_type; // removed in C++17
118 typedef typename traits::off_type off_type; // removed in C++17
119 typedef traits traits_type;
120
121 operator unspecified-bool-type() const;
122 bool operator!() const;
123 iostate rdstate() const;
124 void clear(iostate state = goodbit);
125 void setstate(iostate state);
126 bool good() const;
127 bool eof() const;
128 bool fail() const;
129 bool bad() const;
130
131 iostate exceptions() const;
132 void exceptions(iostate except);
133
134 // 27.5.4.1 Constructor/destructor:
135 explicit basic_ios(basic_streambuf<charT,traits>* sb);
136 virtual ~basic_ios();
137
138 // 27.5.4.2 Members:
139 basic_ostream<charT,traits>* tie() const;
140 basic_ostream<charT,traits>* tie(basic_ostream<charT,traits>* tiestr);
141
142 basic_streambuf<charT,traits>* rdbuf() const;
143 basic_streambuf<charT,traits>* rdbuf(basic_streambuf<charT,traits>* sb);
144
145 basic_ios& copyfmt(const basic_ios& rhs);
146
147 char_type fill() const;
148 char_type fill(char_type ch);
149
150 locale imbue(const locale& loc);
151
152 char narrow(char_type c, char dfault) const;
153 char_type widen(char c) const;
154
155 basic_ios(const basic_ios& ) = delete;
156 basic_ios& operator=(const basic_ios&) = delete;
157
158protected:
159 basic_ios();
160 void init(basic_streambuf<charT,traits>* sb);
161 void move(basic_ios& rhs);
162 void swap(basic_ios& rhs) noexcept;
163 void set_rdbuf(basic_streambuf<charT, traits>* sb);
164};
165
166// 27.5.5, manipulators:
167ios_base& boolalpha (ios_base& str);
168ios_base& noboolalpha(ios_base& str);
169ios_base& showbase (ios_base& str);
170ios_base& noshowbase (ios_base& str);
171ios_base& showpoint (ios_base& str);
172ios_base& noshowpoint(ios_base& str);
173ios_base& showpos (ios_base& str);
174ios_base& noshowpos (ios_base& str);
175ios_base& skipws (ios_base& str);
176ios_base& noskipws (ios_base& str);
177ios_base& uppercase (ios_base& str);
178ios_base& nouppercase(ios_base& str);
179ios_base& unitbuf (ios_base& str);
180ios_base& nounitbuf (ios_base& str);
181
182// 27.5.5.2 adjustfield:
183ios_base& internal (ios_base& str);
184ios_base& left (ios_base& str);
185ios_base& right (ios_base& str);
186
187// 27.5.5.3 basefield:
188ios_base& dec (ios_base& str);
189ios_base& hex (ios_base& str);
190ios_base& oct (ios_base& str);
191
192// 27.5.5.4 floatfield:
193ios_base& fixed (ios_base& str);
194ios_base& scientific (ios_base& str);
195ios_base& hexfloat (ios_base& str);
196ios_base& defaultfloat(ios_base& str);
197
198// 27.5.5.5 error reporting:
199enum class io_errc
200{
201 stream = 1
202};
203
204concept_map ErrorCodeEnum<io_errc> { };
205error_code make_error_code(io_errc e) noexcept;
206error_condition make_error_condition(io_errc e) noexcept;
207storage-class-specifier const error_category& iostream_category() noexcept;
208
209} // std
210
211*/
212
213#include <__config>
214#include <iosfwd>
215#include <__locale>
216#include <system_error>
217
218#if !defined(_LIBCPP_HAS_NO_ATOMIC_HEADER)
219#include <atomic> // for __xindex_
220#endif
221
222#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
223#pragma GCC system_header
224#endif
225
226_LIBCPP_BEGIN_NAMESPACE_STD
227
228typedef ptrdiff_t streamsize;
229
230class _LIBCPP_TYPE_VIS ios_base
231{
232public:
233 class _LIBCPP_EXCEPTION_ABI failure;
234
235 typedef unsigned int fmtflags;
236 static const fmtflags boolalpha = 0x0001;
237 static const fmtflags dec = 0x0002;
238 static const fmtflags fixed = 0x0004;
239 static const fmtflags hex = 0x0008;
240 static const fmtflags internal = 0x0010;
241 static const fmtflags left = 0x0020;
242 static const fmtflags oct = 0x0040;
243 static const fmtflags right = 0x0080;
244 static const fmtflags scientific = 0x0100;
245 static const fmtflags showbase = 0x0200;
246 static const fmtflags showpoint = 0x0400;
247 static const fmtflags showpos = 0x0800;
248 static const fmtflags skipws = 0x1000;
249 static const fmtflags unitbuf = 0x2000;
250 static const fmtflags uppercase = 0x4000;
251 static const fmtflags adjustfield = left | right | internal;
252 static const fmtflags basefield = dec | oct | hex;
253 static const fmtflags floatfield = scientific | fixed;
254
255 typedef unsigned int iostate;
256 static const iostate badbit = 0x1;
257 static const iostate eofbit = 0x2;
258 static const iostate failbit = 0x4;
259 static const iostate goodbit = 0x0;
260
261 typedef unsigned int openmode;
262 static const openmode app = 0x01;
263 static const openmode ate = 0x02;
264 static const openmode binary = 0x04;
265 static const openmode in = 0x08;
266 static const openmode out = 0x10;
267 static const openmode trunc = 0x20;
268
269 enum seekdir {beg, cur, end};
270
271#if _LIBCPP_STD_VER <= 14
272 typedef iostate io_state;
273 typedef openmode open_mode;
274 typedef seekdir seek_dir;
275
276 typedef _VSTD::streamoff streamoff;
277 typedef _VSTD::streampos streampos;
278#endif
279
280 class _LIBCPP_TYPE_VIS Init;
281
282 // 27.5.2.2 fmtflags state:
283 _LIBCPP_INLINE_VISIBILITY fmtflags flags() const;
284 _LIBCPP_INLINE_VISIBILITY fmtflags flags(fmtflags __fmtfl);
285 _LIBCPP_INLINE_VISIBILITY fmtflags setf(fmtflags __fmtfl);
286 _LIBCPP_INLINE_VISIBILITY fmtflags setf(fmtflags __fmtfl, fmtflags __mask);
287 _LIBCPP_INLINE_VISIBILITY void unsetf(fmtflags __mask);
288
289 _LIBCPP_INLINE_VISIBILITY streamsize precision() const;
290 _LIBCPP_INLINE_VISIBILITY streamsize precision(streamsize __prec);
291 _LIBCPP_INLINE_VISIBILITY streamsize width() const;
292 _LIBCPP_INLINE_VISIBILITY streamsize width(streamsize __wide);
293
294 // 27.5.2.3 locales:
295 locale imbue(const locale& __loc);
296 locale getloc() const;
297
298 // 27.5.2.5 storage:
299 static int xalloc();
300 long& iword(int __index);
301 void*& pword(int __index);
302
303 // destructor
304 virtual ~ios_base();
305
306 // 27.5.2.6 callbacks;
307 enum event { erase_event, imbue_event, copyfmt_event };
308 typedef void (*event_callback)(event, ios_base&, int __index);
309 void register_callback(event_callback __fn, int __index);
310
311private:
312 ios_base(const ios_base&); // = delete;
313 ios_base& operator=(const ios_base&); // = delete;
314
315public:
316 static bool sync_with_stdio(bool __sync = true);
317
318 _LIBCPP_INLINE_VISIBILITY iostate rdstate() const;
319 void clear(iostate __state = goodbit);
320 _LIBCPP_INLINE_VISIBILITY void setstate(iostate __state);
321
322 _LIBCPP_INLINE_VISIBILITY bool good() const;
323 _LIBCPP_INLINE_VISIBILITY bool eof() const;
324 _LIBCPP_INLINE_VISIBILITY bool fail() const;
325 _LIBCPP_INLINE_VISIBILITY bool bad() const;
326
327 _LIBCPP_INLINE_VISIBILITY iostate exceptions() const;
328 _LIBCPP_INLINE_VISIBILITY void exceptions(iostate __iostate);
329
330 void __set_badbit_and_consider_rethrow();
331 void __set_failbit_and_consider_rethrow();
332
333 _LIBCPP_INLINE_VISIBILITY
334 void __setstate_nothrow(iostate __state)
335 {
336 if (__rdbuf_)
337 __rdstate_ |= __state;
338 else
339 __rdstate_ |= __state | ios_base::badbit;
340 }
341
342protected:
343 _LIBCPP_INLINE_VISIBILITY
344 ios_base() {// purposefully does no initialization
345 }
346
347 void init(void* __sb);
348 _LIBCPP_INLINE_VISIBILITY void* rdbuf() const {return __rdbuf_;}
349
350 _LIBCPP_INLINE_VISIBILITY
351 void rdbuf(void* __sb)
352 {
353 __rdbuf_ = __sb;
354 clear();
355 }
356
357 void __call_callbacks(event);
358 void copyfmt(const ios_base&);
359 void move(ios_base&);
360 void swap(ios_base&) _NOEXCEPT;
361
362 _LIBCPP_INLINE_VISIBILITY
363 void set_rdbuf(void* __sb)
364 {
365 __rdbuf_ = __sb;
366 }
367
368private:
369 // All data members must be scalars
370 fmtflags __fmtflags_;
371 streamsize __precision_;
372 streamsize __width_;
373 iostate __rdstate_;
374 iostate __exceptions_;
375 void* __rdbuf_;
376 void* __loc_;
377 event_callback* __fn_;
378 int* __index_;
379 size_t __event_size_;
380 size_t __event_cap_;
381// TODO(EricWF): Enable this for both Clang and GCC. Currently it is only
382// enabled with clang.
383#if defined(_LIBCPP_HAS_C_ATOMIC_IMP) && !defined(_LIBCPP_HAS_NO_THREADS)
384 static atomic<int> __xindex_;
385#else
386 static int __xindex_;
387#endif
388 long* __iarray_;
389 size_t __iarray_size_;
390 size_t __iarray_cap_;
391 void** __parray_;
392 size_t __parray_size_;
393 size_t __parray_cap_;
394};
395
396//enum class io_errc
397_LIBCPP_DECLARE_STRONG_ENUM(io_errc)
398{
399 stream = 1
400};
401_LIBCPP_DECLARE_STRONG_ENUM_EPILOG(io_errc)
402
403template <>
404struct _LIBCPP_TEMPLATE_VIS is_error_code_enum<io_errc> : public true_type { };
405
406#ifdef _LIBCPP_HAS_NO_STRONG_ENUMS
407template <>
408struct _LIBCPP_TEMPLATE_VIS is_error_code_enum<io_errc::__lx> : public true_type { };
409#endif
410
411_LIBCPP_FUNC_VIS
412const error_category& iostream_category() _NOEXCEPT;
413
414inline _LIBCPP_INLINE_VISIBILITY
415error_code
416make_error_code(io_errc __e) _NOEXCEPT
417{
418 return error_code(static_cast<int>(__e), iostream_category());
419}
420
421inline _LIBCPP_INLINE_VISIBILITY
422error_condition
423make_error_condition(io_errc __e) _NOEXCEPT
424{
425 return error_condition(static_cast<int>(__e), iostream_category());
426}
427
428class _LIBCPP_EXCEPTION_ABI ios_base::failure
429 : public system_error
430{
431public:
432 explicit failure(const string& __msg, const error_code& __ec = io_errc::stream);
433 explicit failure(const char* __msg, const error_code& __ec = io_errc::stream);
434 virtual ~failure() throw();
435};
436
437_LIBCPP_NORETURN inline _LIBCPP_INLINE_VISIBILITY
438void __throw_failure(char const* __msg) {
439#ifndef _LIBCPP_NO_EXCEPTIONS
440 throw ios_base::failure(__msg);
441#else
442 ((void)__msg);
443 _VSTD::abort();
444#endif
445}
446
447class _LIBCPP_TYPE_VIS ios_base::Init
448{
449public:
450 Init();
451 ~Init();
452};
453
454// fmtflags
455
456inline _LIBCPP_INLINE_VISIBILITY
457ios_base::fmtflags
458ios_base::flags() const
459{
460 return __fmtflags_;
461}
462
463inline _LIBCPP_INLINE_VISIBILITY
464ios_base::fmtflags
465ios_base::flags(fmtflags __fmtfl)
466{
467 fmtflags __r = __fmtflags_;
468 __fmtflags_ = __fmtfl;
469 return __r;
470}
471
472inline _LIBCPP_INLINE_VISIBILITY
473ios_base::fmtflags
474ios_base::setf(fmtflags __fmtfl)
475{
476 fmtflags __r = __fmtflags_;
477 __fmtflags_ |= __fmtfl;
478 return __r;
479}
480
481inline _LIBCPP_INLINE_VISIBILITY
482void
483ios_base::unsetf(fmtflags __mask)
484{
485 __fmtflags_ &= ~__mask;
486}
487
488inline _LIBCPP_INLINE_VISIBILITY
489ios_base::fmtflags
490ios_base::setf(fmtflags __fmtfl, fmtflags __mask)
491{
492 fmtflags __r = __fmtflags_;
493 unsetf(__mask);
494 __fmtflags_ |= __fmtfl & __mask;
495 return __r;
496}
497
498// precision
499
500inline _LIBCPP_INLINE_VISIBILITY
501streamsize
502ios_base::precision() const
503{
504 return __precision_;
505}
506
507inline _LIBCPP_INLINE_VISIBILITY
508streamsize
509ios_base::precision(streamsize __prec)
510{
511 streamsize __r = __precision_;
512 __precision_ = __prec;
513 return __r;
514}
515
516// width
517
518inline _LIBCPP_INLINE_VISIBILITY
519streamsize
520ios_base::width() const
521{
522 return __width_;
523}
524
525inline _LIBCPP_INLINE_VISIBILITY
526streamsize
527ios_base::width(streamsize __wide)
528{
529 streamsize __r = __width_;
530 __width_ = __wide;
531 return __r;
532}
533
534// iostate
535
536inline _LIBCPP_INLINE_VISIBILITY
537ios_base::iostate
538ios_base::rdstate() const
539{
540 return __rdstate_;
541}
542
543inline _LIBCPP_INLINE_VISIBILITY
544void
545ios_base::setstate(iostate __state)
546{
547 clear(__rdstate_ | __state);
548}
549
550inline _LIBCPP_INLINE_VISIBILITY
551bool
552ios_base::good() const
553{
554 return __rdstate_ == 0;
555}
556
557inline _LIBCPP_INLINE_VISIBILITY
558bool
559ios_base::eof() const
560{
561 return (__rdstate_ & eofbit) != 0;
562}
563
564inline _LIBCPP_INLINE_VISIBILITY
565bool
566ios_base::fail() const
567{
568 return (__rdstate_ & (failbit | badbit)) != 0;
569}
570
571inline _LIBCPP_INLINE_VISIBILITY
572bool
573ios_base::bad() const
574{
575 return (__rdstate_ & badbit) != 0;
576}
577
578inline _LIBCPP_INLINE_VISIBILITY
579ios_base::iostate
580ios_base::exceptions() const
581{
582 return __exceptions_;
583}
584
585inline _LIBCPP_INLINE_VISIBILITY
586void
587ios_base::exceptions(iostate __iostate)
588{
589 __exceptions_ = __iostate;
590 clear(__rdstate_);
591}
592
593#if defined(_LIBCPP_CXX03_LANG)
594struct _LIBCPP_TYPE_VIS __cxx03_bool {
595 typedef void (__cxx03_bool::*__bool_type)();
596 void __true_value() {}
597};
598#endif
599
600template <class _CharT, class _Traits>
601class _LIBCPP_TEMPLATE_VIS basic_ios
602 : public ios_base
603{
604public:
605 // types:
606 typedef _CharT char_type;
607 typedef _Traits traits_type;
608
609 typedef typename traits_type::int_type int_type;
610 typedef typename traits_type::pos_type pos_type;
611 typedef typename traits_type::off_type off_type;
612
613 static_assert((is_same<_CharT, typename traits_type::char_type>::value),
614 "traits_type::char_type must be the same type as CharT");
615
616 // __true_value will generate undefined references when linking unless
617 // we give it internal linkage.
618
619#if defined(_LIBCPP_CXX03_LANG)
620 _LIBCPP_INLINE_VISIBILITY
621 operator __cxx03_bool::__bool_type() const {
622 return !fail() ? &__cxx03_bool::__true_value : nullptr;
623 }
624#else
625 _LIBCPP_INLINE_VISIBILITY
626 _LIBCPP_EXPLICIT operator bool() const {return !fail();}
627#endif
628
629 _LIBCPP_INLINE_VISIBILITY bool operator!() const {return fail();}
630 _LIBCPP_INLINE_VISIBILITY iostate rdstate() const {return ios_base::rdstate();}
631 _LIBCPP_INLINE_VISIBILITY void clear(iostate __state = goodbit) {ios_base::clear(__state);}
632 _LIBCPP_INLINE_VISIBILITY void setstate(iostate __state) {ios_base::setstate(__state);}
633 _LIBCPP_INLINE_VISIBILITY bool good() const {return ios_base::good();}
634 _LIBCPP_INLINE_VISIBILITY bool eof() const {return ios_base::eof();}
635 _LIBCPP_INLINE_VISIBILITY bool fail() const {return ios_base::fail();}
636 _LIBCPP_INLINE_VISIBILITY bool bad() const {return ios_base::bad();}
637
638 _LIBCPP_INLINE_VISIBILITY iostate exceptions() const {return ios_base::exceptions();}
639 _LIBCPP_INLINE_VISIBILITY void exceptions(iostate __iostate) {ios_base::exceptions(__iostate);}
640
641 // 27.5.4.1 Constructor/destructor:
642 _LIBCPP_INLINE_VISIBILITY
643 explicit basic_ios(basic_streambuf<char_type,traits_type>* __sb);
644 virtual ~basic_ios();
645
646 // 27.5.4.2 Members:
647 _LIBCPP_INLINE_VISIBILITY
648 basic_ostream<char_type, traits_type>* tie() const;
649 _LIBCPP_INLINE_VISIBILITY
650 basic_ostream<char_type, traits_type>* tie(basic_ostream<char_type, traits_type>* __tiestr);
651
652 _LIBCPP_INLINE_VISIBILITY
653 basic_streambuf<char_type, traits_type>* rdbuf() const;
654 _LIBCPP_INLINE_VISIBILITY
655 basic_streambuf<char_type, traits_type>* rdbuf(basic_streambuf<char_type, traits_type>* __sb);
656
657 basic_ios& copyfmt(const basic_ios& __rhs);
658
659 _LIBCPP_INLINE_VISIBILITY
660 char_type fill() const;
661 _LIBCPP_INLINE_VISIBILITY
662 char_type fill(char_type __ch);
663
664 _LIBCPP_INLINE_VISIBILITY
665 locale imbue(const locale& __loc);
666
667 _LIBCPP_INLINE_VISIBILITY
668 char narrow(char_type __c, char __dfault) const;
669 _LIBCPP_INLINE_VISIBILITY
670 char_type widen(char __c) const;
671
672protected:
673 _LIBCPP_INLINE_VISIBILITY
674 basic_ios() {// purposefully does no initialization
675 }
676 _LIBCPP_INLINE_VISIBILITY
677 void init(basic_streambuf<char_type, traits_type>* __sb);
678
679 _LIBCPP_INLINE_VISIBILITY
680 void move(basic_ios& __rhs);
681#ifndef _LIBCPP_CXX03_LANG
682 _LIBCPP_INLINE_VISIBILITY
683 void move(basic_ios&& __rhs) {move(__rhs);}
684#endif
685 _LIBCPP_INLINE_VISIBILITY
686 void swap(basic_ios& __rhs) _NOEXCEPT;
687 _LIBCPP_INLINE_VISIBILITY
688 void set_rdbuf(basic_streambuf<char_type, traits_type>* __sb);
689private:
690 basic_ostream<char_type, traits_type>* __tie_;
691 mutable int_type __fill_;
692};
693
694template <class _CharT, class _Traits>
695inline _LIBCPP_INLINE_VISIBILITY
696basic_ios<_CharT, _Traits>::basic_ios(basic_streambuf<char_type,traits_type>* __sb)
697{
698 init(__sb);
699}
700
701template <class _CharT, class _Traits>
702basic_ios<_CharT, _Traits>::~basic_ios()
703{
704}
705
706template <class _CharT, class _Traits>
707inline _LIBCPP_INLINE_VISIBILITY
708void
709basic_ios<_CharT, _Traits>::init(basic_streambuf<char_type, traits_type>* __sb)
710{
711 ios_base::init(__sb);
712 __tie_ = 0;
713 __fill_ = traits_type::eof();
714}
715
716template <class _CharT, class _Traits>
717inline _LIBCPP_INLINE_VISIBILITY
718basic_ostream<_CharT, _Traits>*
719basic_ios<_CharT, _Traits>::tie() const
720{
721 return __tie_;
722}
723
724template <class _CharT, class _Traits>
725inline _LIBCPP_INLINE_VISIBILITY
726basic_ostream<_CharT, _Traits>*
727basic_ios<_CharT, _Traits>::tie(basic_ostream<char_type, traits_type>* __tiestr)
728{
729 basic_ostream<char_type, traits_type>* __r = __tie_;
730 __tie_ = __tiestr;
731 return __r;
732}
733
734template <class _CharT, class _Traits>
735inline _LIBCPP_INLINE_VISIBILITY
736basic_streambuf<_CharT, _Traits>*
737basic_ios<_CharT, _Traits>::rdbuf() const
738{
739 return static_cast<basic_streambuf<char_type, traits_type>*>(ios_base::rdbuf());
740}
741
742template <class _CharT, class _Traits>
743inline _LIBCPP_INLINE_VISIBILITY
744basic_streambuf<_CharT, _Traits>*
745basic_ios<_CharT, _Traits>::rdbuf(basic_streambuf<char_type, traits_type>* __sb)
746{
747 basic_streambuf<char_type, traits_type>* __r = rdbuf();
748 ios_base::rdbuf(__sb);
749 return __r;
750}
751
752template <class _CharT, class _Traits>
753inline _LIBCPP_INLINE_VISIBILITY
754locale
755basic_ios<_CharT, _Traits>::imbue(const locale& __loc)
756{
757 locale __r = getloc();
758 ios_base::imbue(__loc);
759 if (rdbuf())
760 rdbuf()->pubimbue(__loc);
761 return __r;
762}
763
764template <class _CharT, class _Traits>
765inline _LIBCPP_INLINE_VISIBILITY
766char
767basic_ios<_CharT, _Traits>::narrow(char_type __c, char __dfault) const
768{
769 return use_facet<ctype<char_type> >(getloc()).narrow(__c, __dfault);
770}
771
772template <class _CharT, class _Traits>
773inline _LIBCPP_INLINE_VISIBILITY
774_CharT
775basic_ios<_CharT, _Traits>::widen(char __c) const
776{
777 return use_facet<ctype<char_type> >(getloc()).widen(__c);
778}
779
780template <class _CharT, class _Traits>
781inline _LIBCPP_INLINE_VISIBILITY
782_CharT
783basic_ios<_CharT, _Traits>::fill() const
784{
785 if (traits_type::eq_int_type(traits_type::eof(), __fill_))
786 __fill_ = widen(' ');
787 return __fill_;
788}
789
790template <class _CharT, class _Traits>
791inline _LIBCPP_INLINE_VISIBILITY
792_CharT
793basic_ios<_CharT, _Traits>::fill(char_type __ch)
794{
795 char_type __r = __fill_;
796 __fill_ = __ch;
797 return __r;
798}
799
800template <class _CharT, class _Traits>
801basic_ios<_CharT, _Traits>&
802basic_ios<_CharT, _Traits>::copyfmt(const basic_ios& __rhs)
803{
804 if (this != &__rhs)
805 {
806 __call_callbacks(erase_event);
807 ios_base::copyfmt(__rhs);
808 __tie_ = __rhs.__tie_;
809 __fill_ = __rhs.__fill_;
810 __call_callbacks(copyfmt_event);
811 exceptions(__rhs.exceptions());
812 }
813 return *this;
814}
815
816template <class _CharT, class _Traits>
817inline _LIBCPP_INLINE_VISIBILITY
818void
819basic_ios<_CharT, _Traits>::move(basic_ios& __rhs)
820{
821 ios_base::move(__rhs);
822 __tie_ = __rhs.__tie_;
823 __rhs.__tie_ = 0;
824 __fill_ = __rhs.__fill_;
825}
826
827template <class _CharT, class _Traits>
828inline _LIBCPP_INLINE_VISIBILITY
829void
830basic_ios<_CharT, _Traits>::swap(basic_ios& __rhs) _NOEXCEPT
831{
832 ios_base::swap(__rhs);
833 _VSTD::swap(__tie_, __rhs.__tie_);
834 _VSTD::swap(__fill_, __rhs.__fill_);
835}
836
837template <class _CharT, class _Traits>
838inline _LIBCPP_INLINE_VISIBILITY
839void
840basic_ios<_CharT, _Traits>::set_rdbuf(basic_streambuf<char_type, traits_type>* __sb)
841{
842 ios_base::set_rdbuf(__sb);
843}
844
845inline _LIBCPP_INLINE_VISIBILITY
846ios_base&
847boolalpha(ios_base& __str)
848{
849 __str.setf(ios_base::boolalpha);
850 return __str;
851}
852
853inline _LIBCPP_INLINE_VISIBILITY
854ios_base&
855noboolalpha(ios_base& __str)
856{
857 __str.unsetf(ios_base::boolalpha);
858 return __str;
859}
860
861inline _LIBCPP_INLINE_VISIBILITY
862ios_base&
863showbase(ios_base& __str)
864{
865 __str.setf(ios_base::showbase);
866 return __str;
867}
868
869inline _LIBCPP_INLINE_VISIBILITY
870ios_base&
871noshowbase(ios_base& __str)
872{
873 __str.unsetf(ios_base::showbase);
874 return __str;
875}
876
877inline _LIBCPP_INLINE_VISIBILITY
878ios_base&
879showpoint(ios_base& __str)
880{
881 __str.setf(ios_base::showpoint);
882 return __str;
883}
884
885inline _LIBCPP_INLINE_VISIBILITY
886ios_base&
887noshowpoint(ios_base& __str)
888{
889 __str.unsetf(ios_base::showpoint);
890 return __str;
891}
892
893inline _LIBCPP_INLINE_VISIBILITY
894ios_base&
895showpos(ios_base& __str)
896{
897 __str.setf(ios_base::showpos);
898 return __str;
899}
900
901inline _LIBCPP_INLINE_VISIBILITY
902ios_base&
903noshowpos(ios_base& __str)
904{
905 __str.unsetf(ios_base::showpos);
906 return __str;
907}
908
909inline _LIBCPP_INLINE_VISIBILITY
910ios_base&
911skipws(ios_base& __str)
912{
913 __str.setf(ios_base::skipws);
914 return __str;
915}
916
917inline _LIBCPP_INLINE_VISIBILITY
918ios_base&
919noskipws(ios_base& __str)
920{
921 __str.unsetf(ios_base::skipws);
922 return __str;
923}
924
925inline _LIBCPP_INLINE_VISIBILITY
926ios_base&
927uppercase(ios_base& __str)
928{
929 __str.setf(ios_base::uppercase);
930 return __str;
931}
932
933inline _LIBCPP_INLINE_VISIBILITY
934ios_base&
935nouppercase(ios_base& __str)
936{
937 __str.unsetf(ios_base::uppercase);
938 return __str;
939}
940
941inline _LIBCPP_INLINE_VISIBILITY
942ios_base&
943unitbuf(ios_base& __str)
944{
945 __str.setf(ios_base::unitbuf);
946 return __str;
947}
948
949inline _LIBCPP_INLINE_VISIBILITY
950ios_base&
951nounitbuf(ios_base& __str)
952{
953 __str.unsetf(ios_base::unitbuf);
954 return __str;
955}
956
957inline _LIBCPP_INLINE_VISIBILITY
958ios_base&
959internal(ios_base& __str)
960{
961 __str.setf(ios_base::internal, ios_base::adjustfield);
962 return __str;
963}
964
965inline _LIBCPP_INLINE_VISIBILITY
966ios_base&
967left(ios_base& __str)
968{
969 __str.setf(ios_base::left, ios_base::adjustfield);
970 return __str;
971}
972
973inline _LIBCPP_INLINE_VISIBILITY
974ios_base&
975right(ios_base& __str)
976{
977 __str.setf(ios_base::right, ios_base::adjustfield);
978 return __str;
979}
980
981inline _LIBCPP_INLINE_VISIBILITY
982ios_base&
983dec(ios_base& __str)
984{
985 __str.setf(ios_base::dec, ios_base::basefield);
986 return __str;
987}
988
989inline _LIBCPP_INLINE_VISIBILITY
990ios_base&
991hex(ios_base& __str)
992{
993 __str.setf(ios_base::hex, ios_base::basefield);
994 return __str;
995}
996
997inline _LIBCPP_INLINE_VISIBILITY
998ios_base&
999oct(ios_base& __str)
1000{
1001 __str.setf(ios_base::oct, ios_base::basefield);
1002 return __str;
1003}
1004
1005inline _LIBCPP_INLINE_VISIBILITY
1006ios_base&
1007fixed(ios_base& __str)
1008{
1009 __str.setf(ios_base::fixed, ios_base::floatfield);
1010 return __str;
1011}
1012
1013inline _LIBCPP_INLINE_VISIBILITY
1014ios_base&
1015scientific(ios_base& __str)
1016{
1017 __str.setf(ios_base::scientific, ios_base::floatfield);
1018 return __str;
1019}
1020
1021inline _LIBCPP_INLINE_VISIBILITY
1022ios_base&
1023hexfloat(ios_base& __str)
1024{
1025 __str.setf(ios_base::fixed | ios_base::scientific, ios_base::floatfield);
1026 return __str;
1027}
1028
1029inline _LIBCPP_INLINE_VISIBILITY
1030ios_base&
1031defaultfloat(ios_base& __str)
1032{
1033 __str.unsetf(ios_base::floatfield);
1034 return __str;
1035}
1036
1037template <class _CharT, class _Traits>
1038class __save_flags
1039{
1040 typedef basic_ios<_CharT, _Traits> __stream_type;
1041 typedef typename __stream_type::fmtflags fmtflags;
1042
1043 __stream_type& __stream_;
1044 fmtflags __fmtflags_;
1045 _CharT __fill_;
1046
1047 __save_flags(const __save_flags&);
1048 __save_flags& operator=(const __save_flags&);
1049public:
1050 _LIBCPP_INLINE_VISIBILITY
1051 explicit __save_flags(__stream_type& __stream)
1052 : __stream_(__stream),
1053 __fmtflags_(__stream.flags()),
1054 __fill_(__stream.fill())
1055 {}
1056 _LIBCPP_INLINE_VISIBILITY
1057 ~__save_flags()
1058 {
1059 __stream_.flags(__fmtflags_);
1060 __stream_.fill(__fill_);
1061 }
1062};
1063
1064_LIBCPP_END_NAMESPACE_STD
1065
1066#endif // _LIBCPP_IOS
1067