ios revision 256281 
1// -*- C++ -*-
2//===---------------------------- ios -------------------------------------===//
3//
4//                     The LLVM Compiler Infrastructure
5//
6// This file is dual licensed under the MIT and the University of Illinois Open
7// Source Licenses. See LICENSE.TXT for details.
8//
9//===----------------------------------------------------------------------===//
10
11#ifndef _LIBCPP_IOS
12#define _LIBCPP_IOS
13
14/*
15    ios synopsis
16
17#include <iosfwd>
18
19namespace std
20{
21
22typedef OFF_T streamoff;
23typedef SZ_T streamsize;
24template <class stateT> class fpos;
25
26class ios_base
27{
28public:
29    class failure;
30
31    typedef T1 fmtflags;
32    static constexpr fmtflags boolalpha;
33    static constexpr fmtflags dec;
34    static constexpr fmtflags fixed;
35    static constexpr fmtflags hex;
36    static constexpr fmtflags internal;
37    static constexpr fmtflags left;
38    static constexpr fmtflags oct;
39    static constexpr fmtflags right;
40    static constexpr fmtflags scientific;
41    static constexpr fmtflags showbase;
42    static constexpr fmtflags showpoint;
43    static constexpr fmtflags showpos;
44    static constexpr fmtflags skipws;
45    static constexpr fmtflags unitbuf;
46    static constexpr fmtflags uppercase;
47    static constexpr fmtflags adjustfield;
48    static constexpr fmtflags basefield;
49    static constexpr fmtflags floatfield;
50
51    typedef T2 iostate;
52    static constexpr iostate badbit;
53    static constexpr iostate eofbit;
54    static constexpr iostate failbit;
55    static constexpr iostate goodbit;
56
57    typedef T3 openmode;
58    static constexpr openmode app;
59    static constexpr openmode ate;
60    static constexpr openmode binary;
61    static constexpr openmode in;
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;
118    typedef typename traits::pos_type pos_type;
119    typedef typename traits::off_type off_type;
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);
207error_condition make_error_condition(io_errc e);
208storage-class-specifier const error_category& iostream_category;
209
210}  // std
211
212*/
213
214#include <__config>
215#include <iosfwd>
216#include <__locale>
217#include <system_error>
218
219#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
220#pragma GCC system_header
221#endif
222
223_LIBCPP_BEGIN_NAMESPACE_STD
224
225typedef ptrdiff_t streamsize;
226
227class _LIBCPP_TYPE_VIS ios_base
228{
229public:
230    class _LIBCPP_TYPE_VIS failure;
231
232    typedef unsigned int fmtflags;
233    static const fmtflags boolalpha   = 0x0001;
234    static const fmtflags dec         = 0x0002;
235    static const fmtflags fixed       = 0x0004;
236    static const fmtflags hex         = 0x0008;
237    static const fmtflags internal    = 0x0010;
238    static const fmtflags left        = 0x0020;
239    static const fmtflags oct         = 0x0040;
240    static const fmtflags right       = 0x0080;
241    static const fmtflags scientific  = 0x0100;
242    static const fmtflags showbase    = 0x0200;
243    static const fmtflags showpoint   = 0x0400;
244    static const fmtflags showpos     = 0x0800;
245    static const fmtflags skipws      = 0x1000;
246    static const fmtflags unitbuf     = 0x2000;
247    static const fmtflags uppercase   = 0x4000;
248    static const fmtflags adjustfield = left | right | internal;
249    static const fmtflags basefield   = dec | oct | hex;
250    static const fmtflags floatfield  = scientific | fixed;
251
252    typedef unsigned int iostate;
253    typedef iostate      io_state;
254    static const iostate badbit  = 0x1;
255    static const iostate eofbit  = 0x2;
256    static const iostate failbit = 0x4;
257    static const iostate goodbit = 0x0;
258
259    typedef unsigned int openmode;
260    typedef openmode     open_mode;
261    static const openmode app    = 0x01;
262    static const openmode ate    = 0x02;
263    static const openmode binary = 0x04;
264    static const openmode in     = 0x08;
265    static const openmode out    = 0x10;
266    static const openmode trunc  = 0x20;
267
268    enum seekdir {beg, cur, end};
269    typedef seekdir seek_dir;
270
271    typedef _VSTD::streamoff streamoff;
272    typedef _VSTD::streampos streampos;
273
274    class _LIBCPP_TYPE_VIS Init;
275
276    // 27.5.2.2 fmtflags state:
277    _LIBCPP_INLINE_VISIBILITY fmtflags flags() const;
278    _LIBCPP_INLINE_VISIBILITY fmtflags flags(fmtflags __fmtfl);
279    _LIBCPP_INLINE_VISIBILITY fmtflags setf(fmtflags __fmtfl);
280    _LIBCPP_INLINE_VISIBILITY fmtflags setf(fmtflags __fmtfl, fmtflags __mask);
281    _LIBCPP_INLINE_VISIBILITY void unsetf(fmtflags __mask);
282
283    _LIBCPP_INLINE_VISIBILITY streamsize precision() const;
284    _LIBCPP_INLINE_VISIBILITY streamsize precision(streamsize __prec);
285    _LIBCPP_INLINE_VISIBILITY streamsize width() const;
286    _LIBCPP_INLINE_VISIBILITY streamsize width(streamsize __wide);
287
288    // 27.5.2.3 locales:
289    locale imbue(const locale& __loc);
290    locale getloc() const;
291
292    // 27.5.2.5 storage:
293    static int xalloc();
294    long& iword(int __index);
295    void*& pword(int __index);
296
297    // destructor
298    virtual ~ios_base();
299
300    // 27.5.2.6 callbacks;
301    enum event { erase_event, imbue_event, copyfmt_event };
302    typedef void (*event_callback)(event, ios_base&, int __index);
303    void register_callback(event_callback __fn, int __index);
304
305private:
306    ios_base(const ios_base&); // = delete;
307    ios_base& operator=(const ios_base&); // = delete;
308
309public:
310    static bool sync_with_stdio(bool __sync = true);
311
312    _LIBCPP_INLINE_VISIBILITY iostate rdstate() const;
313    void clear(iostate __state = goodbit);
314    _LIBCPP_INLINE_VISIBILITY void setstate(iostate __state);
315
316    _LIBCPP_INLINE_VISIBILITY bool good() const;
317    _LIBCPP_INLINE_VISIBILITY bool eof() const;
318    _LIBCPP_INLINE_VISIBILITY bool fail() const;
319    _LIBCPP_INLINE_VISIBILITY bool bad() const;
320
321    _LIBCPP_INLINE_VISIBILITY iostate exceptions() const;
322    _LIBCPP_INLINE_VISIBILITY void exceptions(iostate __except);
323
324    void __set_badbit_and_consider_rethrow();
325    void __set_failbit_and_consider_rethrow();
326
327protected:
328    _LIBCPP_INLINE_VISIBILITY
329    ios_base() {// purposefully does no initialization
330               }
331
332    void init(void* __sb);
333    _LIBCPP_ALWAYS_INLINE void* rdbuf() const {return __rdbuf_;}
334
335    _LIBCPP_ALWAYS_INLINE
336    void rdbuf(void* __sb)
337    {
338        __rdbuf_ = __sb;
339        clear();
340    }
341
342    void __call_callbacks(event);
343    void copyfmt(const ios_base&);
344    void move(ios_base&);
345    void swap(ios_base&) _NOEXCEPT;
346
347    _LIBCPP_ALWAYS_INLINE
348    void set_rdbuf(void* __sb)
349    {
350        __rdbuf_ = __sb;
351    }
352
353private:
354    // All data members must be scalars
355    fmtflags        __fmtflags_;
356    streamsize      __precision_;
357    streamsize      __width_;
358    iostate         __rdstate_;
359    iostate         __exceptions_;
360    void*           __rdbuf_;
361    void*           __loc_;
362    event_callback* __fn_;
363    int*            __index_;
364    size_t          __event_size_;
365    size_t          __event_cap_;
366    static int      __xindex_;
367    long*           __iarray_;
368    size_t          __iarray_size_;
369    size_t          __iarray_cap_;
370    void**          __parray_;
371    size_t          __parray_size_;
372    size_t          __parray_cap_;
373};
374
375//enum class io_errc
376_LIBCPP_DECLARE_STRONG_ENUM(io_errc)
377{
378    stream = 1
379};
380_LIBCPP_DECLARE_STRONG_ENUM_EPILOG(io_errc)
381
382template <>
383struct _LIBCPP_TYPE_VIS is_error_code_enum<io_errc> : public true_type { };
384
385#ifdef _LIBCPP_HAS_NO_STRONG_ENUMS
386template <>
387struct _LIBCPP_TYPE_VIS is_error_code_enum<io_errc::__lx> : public true_type { };
388#endif
389
390_LIBCPP_FUNC_VIS
391const error_category& iostream_category();
392
393inline _LIBCPP_INLINE_VISIBILITY
394error_code
395make_error_code(io_errc __e)
396{
397    return error_code(static_cast<int>(__e), iostream_category());
398}
399
400inline _LIBCPP_INLINE_VISIBILITY
401error_condition
402make_error_condition(io_errc __e)
403{
404    return error_condition(static_cast<int>(__e), iostream_category());
405}
406
407class _LIBCPP_EXCEPTION_ABI ios_base::failure
408    : public system_error
409{
410public:
411    explicit failure(const string& __msg, const error_code& __ec = io_errc::stream);
412    explicit failure(const char* __msg, const error_code& __ec = io_errc::stream);
413    virtual ~failure() throw();
414};
415
416class _LIBCPP_TYPE_VIS ios_base::Init
417{
418public:
419    Init();
420    ~Init();
421};
422
423// fmtflags
424
425inline _LIBCPP_INLINE_VISIBILITY
426ios_base::fmtflags
427ios_base::flags() const
428{
429    return __fmtflags_;
430}
431
432inline _LIBCPP_INLINE_VISIBILITY
433ios_base::fmtflags
434ios_base::flags(fmtflags __fmtfl)
435{
436    fmtflags __r = __fmtflags_;
437    __fmtflags_ = __fmtfl;
438    return __r;
439}
440
441inline _LIBCPP_INLINE_VISIBILITY
442ios_base::fmtflags
443ios_base::setf(fmtflags __fmtfl)
444{
445    fmtflags __r = __fmtflags_;
446    __fmtflags_ |= __fmtfl;
447    return __r;
448}
449
450inline _LIBCPP_INLINE_VISIBILITY
451void
452ios_base::unsetf(fmtflags __mask)
453{
454    __fmtflags_ &= ~__mask;
455}
456
457inline _LIBCPP_INLINE_VISIBILITY
458ios_base::fmtflags
459ios_base::setf(fmtflags __fmtfl, fmtflags __mask)
460{
461    fmtflags __r = __fmtflags_;
462    unsetf(__mask);
463    __fmtflags_ |= __fmtfl & __mask;
464    return __r;
465}
466
467// precision
468
469inline _LIBCPP_INLINE_VISIBILITY
470streamsize
471ios_base::precision() const
472{
473    return __precision_;
474}
475
476inline _LIBCPP_INLINE_VISIBILITY
477streamsize
478ios_base::precision(streamsize __prec)
479{
480    streamsize __r = __precision_;
481    __precision_ = __prec;
482    return __r;
483}
484
485// width
486
487inline _LIBCPP_INLINE_VISIBILITY
488streamsize
489ios_base::width() const
490{
491    return __width_;
492}
493
494inline _LIBCPP_INLINE_VISIBILITY
495streamsize
496ios_base::width(streamsize __wide)
497{
498    streamsize __r = __width_;
499    __width_ = __wide;
500    return __r;
501}
502
503// iostate
504
505inline _LIBCPP_INLINE_VISIBILITY
506ios_base::iostate
507ios_base::rdstate() const
508{
509    return __rdstate_;
510}
511
512inline _LIBCPP_INLINE_VISIBILITY
513void
514ios_base::setstate(iostate __state)
515{
516    clear(__rdstate_ | __state);
517}
518
519inline _LIBCPP_INLINE_VISIBILITY
520bool
521ios_base::good() const
522{
523    return __rdstate_ == 0;
524}
525
526inline _LIBCPP_INLINE_VISIBILITY
527bool
528ios_base::eof() const
529{
530    return __rdstate_ & eofbit;
531}
532
533inline _LIBCPP_INLINE_VISIBILITY
534bool
535ios_base::fail() const
536{
537    return __rdstate_ & (failbit | badbit);
538}
539
540inline _LIBCPP_INLINE_VISIBILITY
541bool
542ios_base::bad() const
543{
544    return __rdstate_ & badbit;
545}
546
547inline _LIBCPP_INLINE_VISIBILITY
548ios_base::iostate
549ios_base::exceptions() const
550{
551    return __exceptions_;
552}
553
554inline _LIBCPP_INLINE_VISIBILITY
555void
556ios_base::exceptions(iostate __except)
557{
558    __exceptions_ = __except;
559    clear(__rdstate_);
560}
561
562template <class _CharT, class _Traits>
563class _LIBCPP_TYPE_VIS basic_ios
564    : public ios_base
565{
566public:
567    // types:
568    typedef _CharT char_type;
569    typedef _Traits traits_type;
570
571    typedef typename traits_type::int_type int_type;
572    typedef typename traits_type::pos_type pos_type;
573    typedef typename traits_type::off_type off_type;
574
575    _LIBCPP_ALWAYS_INLINE
576        _LIBCPP_EXPLICIT
577        operator bool() const {return !fail();}
578    _LIBCPP_ALWAYS_INLINE bool operator!() const    {return  fail();}
579    _LIBCPP_ALWAYS_INLINE iostate rdstate() const   {return ios_base::rdstate();}
580    _LIBCPP_ALWAYS_INLINE void clear(iostate __state = goodbit) {ios_base::clear(__state);}
581    _LIBCPP_ALWAYS_INLINE void setstate(iostate __state) {ios_base::setstate(__state);}
582    _LIBCPP_ALWAYS_INLINE bool good() const {return ios_base::good();}
583    _LIBCPP_ALWAYS_INLINE bool eof() const  {return ios_base::eof();}
584    _LIBCPP_ALWAYS_INLINE bool fail() const {return ios_base::fail();}
585    _LIBCPP_ALWAYS_INLINE bool bad() const  {return ios_base::bad();}
586
587    _LIBCPP_ALWAYS_INLINE iostate exceptions() const {return ios_base::exceptions();}
588    _LIBCPP_ALWAYS_INLINE void exceptions(iostate __except) {ios_base::exceptions(__except);}
589
590    // 27.5.4.1 Constructor/destructor:
591    _LIBCPP_INLINE_VISIBILITY
592    explicit basic_ios(basic_streambuf<char_type,traits_type>* __sb);
593    virtual ~basic_ios();
594
595    // 27.5.4.2 Members:
596    _LIBCPP_INLINE_VISIBILITY 
597    basic_ostream<char_type, traits_type>* tie() const;
598    _LIBCPP_INLINE_VISIBILITY 
599    basic_ostream<char_type, traits_type>* tie(basic_ostream<char_type, traits_type>* __tiestr);
600
601    _LIBCPP_INLINE_VISIBILITY 
602    basic_streambuf<char_type, traits_type>* rdbuf() const;
603    _LIBCPP_INLINE_VISIBILITY 
604    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_INLINE_VISIBILITY 
609    char_type fill() const;
610    _LIBCPP_INLINE_VISIBILITY 
611    char_type fill(char_type __ch);
612
613    _LIBCPP_INLINE_VISIBILITY 
614    locale imbue(const locale& __loc);
615
616    _LIBCPP_INLINE_VISIBILITY 
617    char narrow(char_type __c, char __dfault) const;
618    _LIBCPP_INLINE_VISIBILITY 
619    char_type widen(char __c) const;
620
621protected:
622    _LIBCPP_ALWAYS_INLINE
623    basic_ios() {// purposefully does no initialization
624                }
625    _LIBCPP_INLINE_VISIBILITY 
626    void init(basic_streambuf<char_type, traits_type>* __sb);
627
628    _LIBCPP_INLINE_VISIBILITY 
629    void move(basic_ios& __rhs);
630#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
631    _LIBCPP_ALWAYS_INLINE
632    void move(basic_ios&& __rhs) {move(__rhs);}
633#endif
634    _LIBCPP_INLINE_VISIBILITY 
635    void swap(basic_ios& __rhs) _NOEXCEPT;
636    _LIBCPP_INLINE_VISIBILITY 
637    void set_rdbuf(basic_streambuf<char_type, traits_type>* __sb);
638private:
639    basic_ostream<char_type, traits_type>* __tie_;
640     mutable int_type __fill_;
641};
642
643template <class _CharT, class _Traits>
644inline _LIBCPP_INLINE_VISIBILITY
645basic_ios<_CharT, _Traits>::basic_ios(basic_streambuf<char_type,traits_type>* __sb)
646{
647    init(__sb);
648}
649
650template <class _CharT, class _Traits>
651basic_ios<_CharT, _Traits>::~basic_ios()
652{
653}
654
655template <class _CharT, class _Traits>
656inline _LIBCPP_INLINE_VISIBILITY
657void
658basic_ios<_CharT, _Traits>::init(basic_streambuf<char_type, traits_type>* __sb)
659{
660    ios_base::init(__sb);
661    __tie_ = 0;
662    __fill_ = traits_type::eof();
663}
664
665template <class _CharT, class _Traits>
666inline _LIBCPP_INLINE_VISIBILITY
667basic_ostream<_CharT, _Traits>*
668basic_ios<_CharT, _Traits>::tie() const
669{
670    return __tie_;
671}
672
673template <class _CharT, class _Traits>
674inline _LIBCPP_INLINE_VISIBILITY
675basic_ostream<_CharT, _Traits>*
676basic_ios<_CharT, _Traits>::tie(basic_ostream<char_type, traits_type>* __tiestr)
677{
678    basic_ostream<char_type, traits_type>* __r = __tie_;
679    __tie_ = __tiestr;
680    return __r;
681}
682
683template <class _CharT, class _Traits>
684inline _LIBCPP_INLINE_VISIBILITY
685basic_streambuf<_CharT, _Traits>*
686basic_ios<_CharT, _Traits>::rdbuf() const
687{
688    return static_cast<basic_streambuf<char_type, traits_type>*>(ios_base::rdbuf());
689}
690
691template <class _CharT, class _Traits>
692inline _LIBCPP_INLINE_VISIBILITY
693basic_streambuf<_CharT, _Traits>*
694basic_ios<_CharT, _Traits>::rdbuf(basic_streambuf<char_type, traits_type>* __sb)
695{
696    basic_streambuf<char_type, traits_type>* __r = rdbuf();
697    ios_base::rdbuf(__sb);
698    return __r;
699}
700
701template <class _CharT, class _Traits>
702inline _LIBCPP_INLINE_VISIBILITY
703locale
704basic_ios<_CharT, _Traits>::imbue(const locale& __loc)
705{
706    locale __r = getloc();
707    ios_base::imbue(__loc);
708    if (rdbuf())
709        rdbuf()->pubimbue(__loc);
710    return __r;
711}
712
713template <class _CharT, class _Traits>
714inline _LIBCPP_INLINE_VISIBILITY
715char
716basic_ios<_CharT, _Traits>::narrow(char_type __c, char __dfault) const
717{
718    return use_facet<ctype<char_type> >(getloc()).narrow(__c, __dfault);
719}
720
721template <class _CharT, class _Traits>
722inline _LIBCPP_INLINE_VISIBILITY
723_CharT
724basic_ios<_CharT, _Traits>::widen(char __c) const
725{
726    return use_facet<ctype<char_type> >(getloc()).widen(__c);
727}
728
729template <class _CharT, class _Traits>
730inline _LIBCPP_INLINE_VISIBILITY
731_CharT
732basic_ios<_CharT, _Traits>::fill() const
733{
734    if (traits_type::eq_int_type(traits_type::eof(), __fill_))
735        __fill_ = widen(' ');
736    return __fill_;
737}
738
739template <class _CharT, class _Traits>
740inline _LIBCPP_INLINE_VISIBILITY
741_CharT
742basic_ios<_CharT, _Traits>::fill(char_type __ch)
743{
744    char_type __r = __fill_;
745    __fill_ = __ch;
746    return __r;
747}
748
749template <class _CharT, class _Traits>
750basic_ios<_CharT, _Traits>&
751basic_ios<_CharT, _Traits>::copyfmt(const basic_ios& __rhs)
752{
753    if (this != &__rhs)
754    {
755        __call_callbacks(erase_event);
756        ios_base::copyfmt(__rhs);
757        __tie_ = __rhs.__tie_;
758        __fill_ = __rhs.__fill_;
759        __call_callbacks(copyfmt_event);
760        exceptions(__rhs.exceptions());
761    }
762    return *this;
763}
764
765template <class _CharT, class _Traits>
766inline _LIBCPP_INLINE_VISIBILITY
767void
768basic_ios<_CharT, _Traits>::move(basic_ios& __rhs)
769{
770    ios_base::move(__rhs);
771    __tie_ = __rhs.__tie_;
772    __rhs.__tie_ = 0;
773    __fill_ = __rhs.__fill_;
774}
775
776template <class _CharT, class _Traits>
777inline _LIBCPP_INLINE_VISIBILITY
778void
779basic_ios<_CharT, _Traits>::swap(basic_ios& __rhs) _NOEXCEPT
780{
781    ios_base::swap(__rhs);
782    _VSTD::swap(__tie_, __rhs.__tie_);
783    _VSTD::swap(__fill_, __rhs.__fill_);
784}
785
786template <class _CharT, class _Traits>
787inline _LIBCPP_INLINE_VISIBILITY
788void
789basic_ios<_CharT, _Traits>::set_rdbuf(basic_streambuf<char_type, traits_type>* __sb)
790{
791    ios_base::set_rdbuf(__sb);
792}
793
794inline _LIBCPP_INLINE_VISIBILITY
795ios_base&
796boolalpha(ios_base& __str)
797{
798    __str.setf(ios_base::boolalpha);
799    return __str;
800}
801
802inline _LIBCPP_INLINE_VISIBILITY
803ios_base&
804noboolalpha(ios_base& __str)
805{
806    __str.unsetf(ios_base::boolalpha);
807    return __str;
808}
809
810inline _LIBCPP_INLINE_VISIBILITY
811ios_base&
812showbase(ios_base& __str)
813{
814    __str.setf(ios_base::showbase);
815    return __str;
816}
817
818inline _LIBCPP_INLINE_VISIBILITY
819ios_base&
820noshowbase(ios_base& __str)
821{
822    __str.unsetf(ios_base::showbase);
823    return __str;
824}
825
826inline _LIBCPP_INLINE_VISIBILITY
827ios_base&
828showpoint(ios_base& __str)
829{
830    __str.setf(ios_base::showpoint);
831    return __str;
832}
833
834inline _LIBCPP_INLINE_VISIBILITY
835ios_base&
836noshowpoint(ios_base& __str)
837{
838    __str.unsetf(ios_base::showpoint);
839    return __str;
840}
841
842inline _LIBCPP_INLINE_VISIBILITY
843ios_base&
844showpos(ios_base& __str)
845{
846    __str.setf(ios_base::showpos);
847    return __str;
848}
849
850inline _LIBCPP_INLINE_VISIBILITY
851ios_base&
852noshowpos(ios_base& __str)
853{
854    __str.unsetf(ios_base::showpos);
855    return __str;
856}
857
858inline _LIBCPP_INLINE_VISIBILITY
859ios_base&
860skipws(ios_base& __str)
861{
862    __str.setf(ios_base::skipws);
863    return __str;
864}
865
866inline _LIBCPP_INLINE_VISIBILITY
867ios_base&
868noskipws(ios_base& __str)
869{
870    __str.unsetf(ios_base::skipws);
871    return __str;
872}
873
874inline _LIBCPP_INLINE_VISIBILITY
875ios_base&
876uppercase(ios_base& __str)
877{
878    __str.setf(ios_base::uppercase);
879    return __str;
880}
881
882inline _LIBCPP_INLINE_VISIBILITY
883ios_base&
884nouppercase(ios_base& __str)
885{
886    __str.unsetf(ios_base::uppercase);
887    return __str;
888}
889
890inline _LIBCPP_INLINE_VISIBILITY
891ios_base&
892unitbuf(ios_base& __str)
893{
894    __str.setf(ios_base::unitbuf);
895    return __str;
896}
897
898inline _LIBCPP_INLINE_VISIBILITY
899ios_base&
900nounitbuf(ios_base& __str)
901{
902    __str.unsetf(ios_base::unitbuf);
903    return __str;
904}
905
906inline _LIBCPP_INLINE_VISIBILITY
907ios_base&
908internal(ios_base& __str)
909{
910    __str.setf(ios_base::internal, ios_base::adjustfield);
911    return __str;
912}
913
914inline _LIBCPP_INLINE_VISIBILITY
915ios_base&
916left(ios_base& __str)
917{
918    __str.setf(ios_base::left, ios_base::adjustfield);
919    return __str;
920}
921
922inline _LIBCPP_INLINE_VISIBILITY
923ios_base&
924right(ios_base& __str)
925{
926    __str.setf(ios_base::right, ios_base::adjustfield);
927    return __str;
928}
929
930inline _LIBCPP_INLINE_VISIBILITY
931ios_base&
932dec(ios_base& __str)
933{
934    __str.setf(ios_base::dec, ios_base::basefield);
935    return __str;
936}
937
938inline _LIBCPP_INLINE_VISIBILITY
939ios_base&
940hex(ios_base& __str)
941{
942    __str.setf(ios_base::hex, ios_base::basefield);
943    return __str;
944}
945
946inline _LIBCPP_INLINE_VISIBILITY
947ios_base&
948oct(ios_base& __str)
949{
950    __str.setf(ios_base::oct, ios_base::basefield);
951    return __str;
952}
953
954inline _LIBCPP_INLINE_VISIBILITY
955ios_base&
956fixed(ios_base& __str)
957{
958    __str.setf(ios_base::fixed, ios_base::floatfield);
959    return __str;
960}
961
962inline _LIBCPP_INLINE_VISIBILITY
963ios_base&
964scientific(ios_base& __str)
965{
966    __str.setf(ios_base::scientific, ios_base::floatfield);
967    return __str;
968}
969
970inline _LIBCPP_INLINE_VISIBILITY
971ios_base&
972hexfloat(ios_base& __str)
973{
974    __str.setf(ios_base::fixed | ios_base::scientific, ios_base::floatfield);
975    return __str;
976}
977
978inline _LIBCPP_INLINE_VISIBILITY
979ios_base&
980defaultfloat(ios_base& __str)
981{
982    __str.unsetf(ios_base::floatfield);
983    return __str;
984}
985
986_LIBCPP_END_NAMESPACE_STD
987
988#endif  // _LIBCPP_IOS
989