xref: /freebsd/contrib/llvm-project/libcxx/include/ios (revision 1165fc9a526630487a1feb63daef65c5aee1a583) 
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 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 <__locale>
215#include <iosfwd>
216#include <system_error>
217#include <version>
218
219#if !defined(_LIBCPP_HAS_NO_ATOMIC_HEADER)
220#include <atomic>     // for __xindex_
221#endif
222
223#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
224#pragma GCC system_header
225#endif
226
227_LIBCPP_BEGIN_NAMESPACE_STD
228
229typedef ptrdiff_t streamsize;
230
231class _LIBCPP_TYPE_VIS ios_base
232{
233public:
234    class _LIBCPP_EXCEPTION_ABI failure;
235
236    typedef unsigned int fmtflags;
237    static const fmtflags boolalpha   = 0x0001;
238    static const fmtflags dec         = 0x0002;
239    static const fmtflags fixed       = 0x0004;
240    static const fmtflags hex         = 0x0008;
241    static const fmtflags internal    = 0x0010;
242    static const fmtflags left        = 0x0020;
243    static const fmtflags oct         = 0x0040;
244    static const fmtflags right       = 0x0080;
245    static const fmtflags scientific  = 0x0100;
246    static const fmtflags showbase    = 0x0200;
247    static const fmtflags showpoint   = 0x0400;
248    static const fmtflags showpos     = 0x0800;
249    static const fmtflags skipws      = 0x1000;
250    static const fmtflags unitbuf     = 0x2000;
251    static const fmtflags uppercase   = 0x4000;
252    static const fmtflags adjustfield = left | right | internal;
253    static const fmtflags basefield   = dec | oct | hex;
254    static const fmtflags floatfield  = scientific | fixed;
255
256    typedef unsigned int iostate;
257    static const iostate badbit  = 0x1;
258    static const iostate eofbit  = 0x2;
259    static const iostate failbit = 0x4;
260    static const iostate goodbit = 0x0;
261
262    typedef unsigned int openmode;
263    static const openmode app    = 0x01;
264    static const openmode ate    = 0x02;
265    static const openmode binary = 0x04;
266    static const openmode in     = 0x08;
267    static const openmode out    = 0x10;
268    static const openmode trunc  = 0x20;
269
270    enum seekdir {beg, cur, end};
271
272#if _LIBCPP_STD_VER <= 14
273    typedef iostate      io_state;
274    typedef openmode     open_mode;
275    typedef seekdir      seek_dir;
276
277    typedef _VSTD::streamoff streamoff;
278    typedef _VSTD::streampos streampos;
279#endif
280
281    class _LIBCPP_TYPE_VIS Init;
282
283    // 27.5.2.2 fmtflags state:
284    _LIBCPP_INLINE_VISIBILITY fmtflags flags() const;
285    _LIBCPP_INLINE_VISIBILITY fmtflags flags(fmtflags __fmtfl);
286    _LIBCPP_INLINE_VISIBILITY fmtflags setf(fmtflags __fmtfl);
287    _LIBCPP_INLINE_VISIBILITY fmtflags setf(fmtflags __fmtfl, fmtflags __mask);
288    _LIBCPP_INLINE_VISIBILITY void unsetf(fmtflags __mask);
289
290    _LIBCPP_INLINE_VISIBILITY streamsize precision() const;
291    _LIBCPP_INLINE_VISIBILITY streamsize precision(streamsize __prec);
292    _LIBCPP_INLINE_VISIBILITY streamsize width() const;
293    _LIBCPP_INLINE_VISIBILITY streamsize width(streamsize __wide);
294
295    // 27.5.2.3 locales:
296    locale imbue(const locale& __loc);
297    locale getloc() const;
298
299    // 27.5.2.5 storage:
300    static int xalloc();
301    long& iword(int __index);
302    void*& pword(int __index);
303
304    // destructor
305    virtual ~ios_base();
306
307    // 27.5.2.6 callbacks;
308    enum event { erase_event, imbue_event, copyfmt_event };
309    typedef void (*event_callback)(event, ios_base&, int __index);
310    void register_callback(event_callback __fn, int __index);
311
312    ios_base(const ios_base&) = delete;
313    ios_base& operator=(const ios_base&) = delete;
314
315    static bool sync_with_stdio(bool __sync = true);
316
317    _LIBCPP_INLINE_VISIBILITY iostate rdstate() const;
318    void clear(iostate __state = goodbit);
319    _LIBCPP_INLINE_VISIBILITY void setstate(iostate __state);
320
321    _LIBCPP_INLINE_VISIBILITY bool good() const;
322    _LIBCPP_INLINE_VISIBILITY bool eof() const;
323    _LIBCPP_INLINE_VISIBILITY bool fail() const;
324    _LIBCPP_INLINE_VISIBILITY bool bad() const;
325
326    _LIBCPP_INLINE_VISIBILITY iostate exceptions() const;
327    _LIBCPP_INLINE_VISIBILITY void exceptions(iostate __iostate);
328
329    void __set_badbit_and_consider_rethrow();
330    void __set_failbit_and_consider_rethrow();
331
332    _LIBCPP_INLINE_VISIBILITY
333    void __setstate_nothrow(iostate __state)
334    {
335        if (__rdbuf_)
336            __rdstate_ |= __state;
337        else
338            __rdstate_ |= __state | ios_base::badbit;
339    }
340
341protected:
342    _LIBCPP_INLINE_VISIBILITY
343    ios_base() {// purposefully does no initialization
344               }
345
346    void init(void* __sb);
347    _LIBCPP_INLINE_VISIBILITY void* rdbuf() const {return __rdbuf_;}
348
349    _LIBCPP_INLINE_VISIBILITY
350    void rdbuf(void* __sb)
351    {
352        __rdbuf_ = __sb;
353        clear();
354    }
355
356    void __call_callbacks(event);
357    void copyfmt(const ios_base&);
358    void move(ios_base&);
359    void swap(ios_base&) _NOEXCEPT;
360
361    _LIBCPP_INLINE_VISIBILITY
362    void set_rdbuf(void* __sb)
363    {
364        __rdbuf_ = __sb;
365    }
366
367private:
368    // All data members must be scalars
369    fmtflags        __fmtflags_;
370    streamsize      __precision_;
371    streamsize      __width_;
372    iostate         __rdstate_;
373    iostate         __exceptions_;
374    void*           __rdbuf_;
375    void*           __loc_;
376    event_callback* __fn_;
377    int*            __index_;
378    size_t          __event_size_;
379    size_t          __event_cap_;
380// TODO(EricWF): Enable this for both Clang and GCC. Currently it is only
381// enabled with clang.
382#if defined(_LIBCPP_HAS_C_ATOMIC_IMP) && !defined(_LIBCPP_HAS_NO_THREADS)
383    static atomic<int> __xindex_;
384#else
385    static int      __xindex_;
386#endif
387    long*           __iarray_;
388    size_t          __iarray_size_;
389    size_t          __iarray_cap_;
390    void**          __parray_;
391    size_t          __parray_size_;
392    size_t          __parray_cap_;
393};
394
395//enum class io_errc
396_LIBCPP_DECLARE_STRONG_ENUM(io_errc)
397{
398    stream = 1
399};
400_LIBCPP_DECLARE_STRONG_ENUM_EPILOG(io_errc)
401
402template <>
403struct _LIBCPP_TEMPLATE_VIS is_error_code_enum<io_errc> : public true_type { };
404
405#ifdef _LIBCPP_HAS_NO_STRONG_ENUMS
406template <>
407struct _LIBCPP_TEMPLATE_VIS is_error_code_enum<io_errc::__lx> : public true_type { };
408#endif
409
410_LIBCPP_FUNC_VIS
411const error_category& iostream_category() _NOEXCEPT;
412
413inline _LIBCPP_INLINE_VISIBILITY
414error_code
415make_error_code(io_errc __e) _NOEXCEPT
416{
417    return error_code(static_cast<int>(__e), iostream_category());
418}
419
420inline _LIBCPP_INLINE_VISIBILITY
421error_condition
422make_error_condition(io_errc __e) _NOEXCEPT
423{
424    return error_condition(static_cast<int>(__e), iostream_category());
425}
426
427class _LIBCPP_EXCEPTION_ABI ios_base::failure
428    : public system_error
429{
430public:
431    explicit failure(const string& __msg, const error_code& __ec = io_errc::stream);
432    explicit failure(const char* __msg, const error_code& __ec = io_errc::stream);
433    failure(const failure&) _NOEXCEPT = default;
434    virtual ~failure() _NOEXCEPT;
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
593template <class _CharT, class _Traits>
594class _LIBCPP_TEMPLATE_VIS basic_ios
595    : public ios_base
596{
597public:
598    // types:
599    typedef _CharT char_type;
600    typedef _Traits traits_type;
601
602    typedef typename traits_type::int_type int_type;
603    typedef typename traits_type::pos_type pos_type;
604    typedef typename traits_type::off_type off_type;
605
606    static_assert((is_same<_CharT, typename traits_type::char_type>::value),
607                  "traits_type::char_type must be the same type as CharT");
608
609#ifdef _LIBCPP_CXX03_LANG
610    // Preserve the ability to compare with literal 0,
611    // and implicitly convert to bool, but not implicitly convert to int.
612    _LIBCPP_INLINE_VISIBILITY
613    operator void*() const {return fail() ? nullptr : (void*)this;}
614#else
615    _LIBCPP_INLINE_VISIBILITY
616    explicit operator bool() const {return !fail();}
617#endif
618
619    _LIBCPP_INLINE_VISIBILITY bool operator!() const    {return  fail();}
620    _LIBCPP_INLINE_VISIBILITY iostate rdstate() const   {return ios_base::rdstate();}
621    _LIBCPP_INLINE_VISIBILITY void clear(iostate __state = goodbit) {ios_base::clear(__state);}
622    _LIBCPP_INLINE_VISIBILITY void setstate(iostate __state) {ios_base::setstate(__state);}
623    _LIBCPP_INLINE_VISIBILITY bool good() const {return ios_base::good();}
624    _LIBCPP_INLINE_VISIBILITY bool eof() const  {return ios_base::eof();}
625    _LIBCPP_INLINE_VISIBILITY bool fail() const {return ios_base::fail();}
626    _LIBCPP_INLINE_VISIBILITY bool bad() const  {return ios_base::bad();}
627
628    _LIBCPP_INLINE_VISIBILITY iostate exceptions() const {return ios_base::exceptions();}
629    _LIBCPP_INLINE_VISIBILITY void exceptions(iostate __iostate) {ios_base::exceptions(__iostate);}
630
631    // 27.5.4.1 Constructor/destructor:
632    _LIBCPP_INLINE_VISIBILITY
633    explicit basic_ios(basic_streambuf<char_type,traits_type>* __sb);
634    virtual ~basic_ios();
635
636    // 27.5.4.2 Members:
637    _LIBCPP_INLINE_VISIBILITY
638    basic_ostream<char_type, traits_type>* tie() const;
639    _LIBCPP_INLINE_VISIBILITY
640    basic_ostream<char_type, traits_type>* tie(basic_ostream<char_type, traits_type>* __tiestr);
641
642    _LIBCPP_INLINE_VISIBILITY
643    basic_streambuf<char_type, traits_type>* rdbuf() const;
644    _LIBCPP_INLINE_VISIBILITY
645    basic_streambuf<char_type, traits_type>* rdbuf(basic_streambuf<char_type, traits_type>* __sb);
646
647    basic_ios& copyfmt(const basic_ios& __rhs);
648
649    _LIBCPP_INLINE_VISIBILITY
650    char_type fill() const;
651    _LIBCPP_INLINE_VISIBILITY
652    char_type fill(char_type __ch);
653
654    _LIBCPP_INLINE_VISIBILITY
655    locale imbue(const locale& __loc);
656
657    _LIBCPP_INLINE_VISIBILITY
658    char narrow(char_type __c, char __dfault) const;
659    _LIBCPP_INLINE_VISIBILITY
660    char_type widen(char __c) const;
661
662protected:
663    _LIBCPP_INLINE_VISIBILITY
664    basic_ios() {// purposefully does no initialization
665                }
666    _LIBCPP_INLINE_VISIBILITY
667    void init(basic_streambuf<char_type, traits_type>* __sb);
668
669    _LIBCPP_INLINE_VISIBILITY
670    void move(basic_ios& __rhs);
671    _LIBCPP_INLINE_VISIBILITY
672    void move(basic_ios&& __rhs) {move(__rhs);}
673    _LIBCPP_INLINE_VISIBILITY
674    void swap(basic_ios& __rhs) _NOEXCEPT;
675    _LIBCPP_INLINE_VISIBILITY
676    void set_rdbuf(basic_streambuf<char_type, traits_type>* __sb);
677private:
678    basic_ostream<char_type, traits_type>* __tie_;
679    mutable int_type __fill_;
680};
681
682template <class _CharT, class _Traits>
683inline _LIBCPP_INLINE_VISIBILITY
684basic_ios<_CharT, _Traits>::basic_ios(basic_streambuf<char_type,traits_type>* __sb)
685{
686    init(__sb);
687}
688
689template <class _CharT, class _Traits>
690basic_ios<_CharT, _Traits>::~basic_ios()
691{
692}
693
694template <class _CharT, class _Traits>
695inline _LIBCPP_INLINE_VISIBILITY
696void
697basic_ios<_CharT, _Traits>::init(basic_streambuf<char_type, traits_type>* __sb)
698{
699    ios_base::init(__sb);
700    __tie_ = nullptr;
701    __fill_ = traits_type::eof();
702}
703
704template <class _CharT, class _Traits>
705inline _LIBCPP_INLINE_VISIBILITY
706basic_ostream<_CharT, _Traits>*
707basic_ios<_CharT, _Traits>::tie() const
708{
709    return __tie_;
710}
711
712template <class _CharT, class _Traits>
713inline _LIBCPP_INLINE_VISIBILITY
714basic_ostream<_CharT, _Traits>*
715basic_ios<_CharT, _Traits>::tie(basic_ostream<char_type, traits_type>* __tiestr)
716{
717    basic_ostream<char_type, traits_type>* __r = __tie_;
718    __tie_ = __tiestr;
719    return __r;
720}
721
722template <class _CharT, class _Traits>
723inline _LIBCPP_INLINE_VISIBILITY
724basic_streambuf<_CharT, _Traits>*
725basic_ios<_CharT, _Traits>::rdbuf() const
726{
727    return static_cast<basic_streambuf<char_type, traits_type>*>(ios_base::rdbuf());
728}
729
730template <class _CharT, class _Traits>
731inline _LIBCPP_INLINE_VISIBILITY
732basic_streambuf<_CharT, _Traits>*
733basic_ios<_CharT, _Traits>::rdbuf(basic_streambuf<char_type, traits_type>* __sb)
734{
735    basic_streambuf<char_type, traits_type>* __r = rdbuf();
736    ios_base::rdbuf(__sb);
737    return __r;
738}
739
740template <class _CharT, class _Traits>
741inline _LIBCPP_INLINE_VISIBILITY
742locale
743basic_ios<_CharT, _Traits>::imbue(const locale& __loc)
744{
745    locale __r = getloc();
746    ios_base::imbue(__loc);
747    if (rdbuf())
748        rdbuf()->pubimbue(__loc);
749    return __r;
750}
751
752template <class _CharT, class _Traits>
753inline _LIBCPP_INLINE_VISIBILITY
754char
755basic_ios<_CharT, _Traits>::narrow(char_type __c, char __dfault) const
756{
757    return use_facet<ctype<char_type> >(getloc()).narrow(__c, __dfault);
758}
759
760template <class _CharT, class _Traits>
761inline _LIBCPP_INLINE_VISIBILITY
762_CharT
763basic_ios<_CharT, _Traits>::widen(char __c) const
764{
765    return use_facet<ctype<char_type> >(getloc()).widen(__c);
766}
767
768template <class _CharT, class _Traits>
769inline _LIBCPP_INLINE_VISIBILITY
770_CharT
771basic_ios<_CharT, _Traits>::fill() const
772{
773    if (traits_type::eq_int_type(traits_type::eof(), __fill_))
774        __fill_ = widen(' ');
775    return __fill_;
776}
777
778template <class _CharT, class _Traits>
779inline _LIBCPP_INLINE_VISIBILITY
780_CharT
781basic_ios<_CharT, _Traits>::fill(char_type __ch)
782{
783    char_type __r = __fill_;
784    __fill_ = __ch;
785    return __r;
786}
787
788template <class _CharT, class _Traits>
789basic_ios<_CharT, _Traits>&
790basic_ios<_CharT, _Traits>::copyfmt(const basic_ios& __rhs)
791{
792    if (this != &__rhs)
793    {
794        __call_callbacks(erase_event);
795        ios_base::copyfmt(__rhs);
796        __tie_ = __rhs.__tie_;
797        __fill_ = __rhs.__fill_;
798        __call_callbacks(copyfmt_event);
799        exceptions(__rhs.exceptions());
800    }
801    return *this;
802}
803
804template <class _CharT, class _Traits>
805inline _LIBCPP_INLINE_VISIBILITY
806void
807basic_ios<_CharT, _Traits>::move(basic_ios& __rhs)
808{
809    ios_base::move(__rhs);
810    __tie_ = __rhs.__tie_;
811    __rhs.__tie_ = nullptr;
812    __fill_ = __rhs.__fill_;
813}
814
815template <class _CharT, class _Traits>
816inline _LIBCPP_INLINE_VISIBILITY
817void
818basic_ios<_CharT, _Traits>::swap(basic_ios& __rhs) _NOEXCEPT
819{
820    ios_base::swap(__rhs);
821    _VSTD::swap(__tie_, __rhs.__tie_);
822    _VSTD::swap(__fill_, __rhs.__fill_);
823}
824
825template <class _CharT, class _Traits>
826inline _LIBCPP_INLINE_VISIBILITY
827void
828basic_ios<_CharT, _Traits>::set_rdbuf(basic_streambuf<char_type, traits_type>* __sb)
829{
830    ios_base::set_rdbuf(__sb);
831}
832
833inline
834ios_base&
835boolalpha(ios_base& __str)
836{
837    __str.setf(ios_base::boolalpha);
838    return __str;
839}
840
841inline
842ios_base&
843noboolalpha(ios_base& __str)
844{
845    __str.unsetf(ios_base::boolalpha);
846    return __str;
847}
848
849inline
850ios_base&
851showbase(ios_base& __str)
852{
853    __str.setf(ios_base::showbase);
854    return __str;
855}
856
857inline
858ios_base&
859noshowbase(ios_base& __str)
860{
861    __str.unsetf(ios_base::showbase);
862    return __str;
863}
864
865inline
866ios_base&
867showpoint(ios_base& __str)
868{
869    __str.setf(ios_base::showpoint);
870    return __str;
871}
872
873inline
874ios_base&
875noshowpoint(ios_base& __str)
876{
877    __str.unsetf(ios_base::showpoint);
878    return __str;
879}
880
881inline
882ios_base&
883showpos(ios_base& __str)
884{
885    __str.setf(ios_base::showpos);
886    return __str;
887}
888
889inline
890ios_base&
891noshowpos(ios_base& __str)
892{
893    __str.unsetf(ios_base::showpos);
894    return __str;
895}
896
897inline
898ios_base&
899skipws(ios_base& __str)
900{
901    __str.setf(ios_base::skipws);
902    return __str;
903}
904
905inline
906ios_base&
907noskipws(ios_base& __str)
908{
909    __str.unsetf(ios_base::skipws);
910    return __str;
911}
912
913inline
914ios_base&
915uppercase(ios_base& __str)
916{
917    __str.setf(ios_base::uppercase);
918    return __str;
919}
920
921inline
922ios_base&
923nouppercase(ios_base& __str)
924{
925    __str.unsetf(ios_base::uppercase);
926    return __str;
927}
928
929inline
930ios_base&
931unitbuf(ios_base& __str)
932{
933    __str.setf(ios_base::unitbuf);
934    return __str;
935}
936
937inline
938ios_base&
939nounitbuf(ios_base& __str)
940{
941    __str.unsetf(ios_base::unitbuf);
942    return __str;
943}
944
945inline
946ios_base&
947internal(ios_base& __str)
948{
949    __str.setf(ios_base::internal, ios_base::adjustfield);
950    return __str;
951}
952
953inline
954ios_base&
955left(ios_base& __str)
956{
957    __str.setf(ios_base::left, ios_base::adjustfield);
958    return __str;
959}
960
961inline
962ios_base&
963right(ios_base& __str)
964{
965    __str.setf(ios_base::right, ios_base::adjustfield);
966    return __str;
967}
968
969inline
970ios_base&
971dec(ios_base& __str)
972{
973    __str.setf(ios_base::dec, ios_base::basefield);
974    return __str;
975}
976
977inline
978ios_base&
979hex(ios_base& __str)
980{
981    __str.setf(ios_base::hex, ios_base::basefield);
982    return __str;
983}
984
985inline
986ios_base&
987oct(ios_base& __str)
988{
989    __str.setf(ios_base::oct, ios_base::basefield);
990    return __str;
991}
992
993inline
994ios_base&
995fixed(ios_base& __str)
996{
997    __str.setf(ios_base::fixed, ios_base::floatfield);
998    return __str;
999}
1000
1001inline
1002ios_base&
1003scientific(ios_base& __str)
1004{
1005    __str.setf(ios_base::scientific, ios_base::floatfield);
1006    return __str;
1007}
1008
1009inline
1010ios_base&
1011hexfloat(ios_base& __str)
1012{
1013    __str.setf(ios_base::fixed | ios_base::scientific, ios_base::floatfield);
1014    return __str;
1015}
1016
1017inline
1018ios_base&
1019defaultfloat(ios_base& __str)
1020{
1021    __str.unsetf(ios_base::floatfield);
1022    return __str;
1023}
1024
1025_LIBCPP_END_NAMESPACE_STD
1026
1027#endif // _LIBCPP_IOS
1028