xref: /freebsd-src/contrib/llvm-project/libcxx/include/ios (revision 0eae32dcef82f6f06de6419a0d623d7def0cc8f6) 
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
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
311    ios_base(const ios_base&) = delete;
312    ios_base& operator=(const ios_base&) = delete;
313
314    static bool sync_with_stdio(bool __sync = true);
315
316    _LIBCPP_INLINE_VISIBILITY iostate rdstate() const;
317    void clear(iostate __state = goodbit);
318    _LIBCPP_INLINE_VISIBILITY void setstate(iostate __state);
319
320    _LIBCPP_INLINE_VISIBILITY bool good() const;
321    _LIBCPP_INLINE_VISIBILITY bool eof() const;
322    _LIBCPP_INLINE_VISIBILITY bool fail() const;
323    _LIBCPP_INLINE_VISIBILITY bool bad() const;
324
325    _LIBCPP_INLINE_VISIBILITY iostate exceptions() const;
326    _LIBCPP_INLINE_VISIBILITY void exceptions(iostate __iostate);
327
328    void __set_badbit_and_consider_rethrow();
329    void __set_failbit_and_consider_rethrow();
330
331    _LIBCPP_INLINE_VISIBILITY
332    void __setstate_nothrow(iostate __state)
333    {
334        if (__rdbuf_)
335            __rdstate_ |= __state;
336        else
337            __rdstate_ |= __state | ios_base::badbit;
338    }
339
340protected:
341    _LIBCPP_INLINE_VISIBILITY
342    ios_base() {// purposefully does no initialization
343               }
344
345    void init(void* __sb);
346    _LIBCPP_INLINE_VISIBILITY void* rdbuf() const {return __rdbuf_;}
347
348    _LIBCPP_INLINE_VISIBILITY
349    void rdbuf(void* __sb)
350    {
351        __rdbuf_ = __sb;
352        clear();
353    }
354
355    void __call_callbacks(event);
356    void copyfmt(const ios_base&);
357    void move(ios_base&);
358    void swap(ios_base&) _NOEXCEPT;
359
360    _LIBCPP_INLINE_VISIBILITY
361    void set_rdbuf(void* __sb)
362    {
363        __rdbuf_ = __sb;
364    }
365
366private:
367    // All data members must be scalars
368    fmtflags        __fmtflags_;
369    streamsize      __precision_;
370    streamsize      __width_;
371    iostate         __rdstate_;
372    iostate         __exceptions_;
373    void*           __rdbuf_;
374    void*           __loc_;
375    event_callback* __fn_;
376    int*            __index_;
377    size_t          __event_size_;
378    size_t          __event_cap_;
379// TODO(EricWF): Enable this for both Clang and GCC. Currently it is only
380// enabled with clang.
381#if defined(_LIBCPP_HAS_C_ATOMIC_IMP) && !defined(_LIBCPP_HAS_NO_THREADS)
382    static atomic<int> __xindex_;
383#else
384    static int      __xindex_;
385#endif
386    long*           __iarray_;
387    size_t          __iarray_size_;
388    size_t          __iarray_cap_;
389    void**          __parray_;
390    size_t          __parray_size_;
391    size_t          __parray_cap_;
392};
393
394//enum class io_errc
395_LIBCPP_DECLARE_STRONG_ENUM(io_errc)
396{
397    stream = 1
398};
399_LIBCPP_DECLARE_STRONG_ENUM_EPILOG(io_errc)
400
401template <>
402struct _LIBCPP_TEMPLATE_VIS is_error_code_enum<io_errc> : public true_type { };
403
404#ifdef _LIBCPP_HAS_NO_STRONG_ENUMS
405template <>
406struct _LIBCPP_TEMPLATE_VIS is_error_code_enum<io_errc::__lx> : public true_type { };
407#endif
408
409_LIBCPP_FUNC_VIS
410const error_category& iostream_category() _NOEXCEPT;
411
412inline _LIBCPP_INLINE_VISIBILITY
413error_code
414make_error_code(io_errc __e) _NOEXCEPT
415{
416    return error_code(static_cast<int>(__e), iostream_category());
417}
418
419inline _LIBCPP_INLINE_VISIBILITY
420error_condition
421make_error_condition(io_errc __e) _NOEXCEPT
422{
423    return error_condition(static_cast<int>(__e), iostream_category());
424}
425
426class _LIBCPP_EXCEPTION_ABI ios_base::failure
427    : public system_error
428{
429public:
430    explicit failure(const string& __msg, const error_code& __ec = io_errc::stream);
431    explicit failure(const char* __msg, const error_code& __ec = io_errc::stream);
432    failure(const failure&) _NOEXCEPT = default;
433    virtual ~failure() _NOEXCEPT;
434};
435
436_LIBCPP_NORETURN inline _LIBCPP_INLINE_VISIBILITY
437void __throw_failure(char const* __msg) {
438#ifndef _LIBCPP_NO_EXCEPTIONS
439    throw ios_base::failure(__msg);
440#else
441    ((void)__msg);
442    _VSTD::abort();
443#endif
444}
445
446class _LIBCPP_TYPE_VIS ios_base::Init
447{
448public:
449    Init();
450    ~Init();
451};
452
453// fmtflags
454
455inline _LIBCPP_INLINE_VISIBILITY
456ios_base::fmtflags
457ios_base::flags() const
458{
459    return __fmtflags_;
460}
461
462inline _LIBCPP_INLINE_VISIBILITY
463ios_base::fmtflags
464ios_base::flags(fmtflags __fmtfl)
465{
466    fmtflags __r = __fmtflags_;
467    __fmtflags_ = __fmtfl;
468    return __r;
469}
470
471inline _LIBCPP_INLINE_VISIBILITY
472ios_base::fmtflags
473ios_base::setf(fmtflags __fmtfl)
474{
475    fmtflags __r = __fmtflags_;
476    __fmtflags_ |= __fmtfl;
477    return __r;
478}
479
480inline _LIBCPP_INLINE_VISIBILITY
481void
482ios_base::unsetf(fmtflags __mask)
483{
484    __fmtflags_ &= ~__mask;
485}
486
487inline _LIBCPP_INLINE_VISIBILITY
488ios_base::fmtflags
489ios_base::setf(fmtflags __fmtfl, fmtflags __mask)
490{
491    fmtflags __r = __fmtflags_;
492    unsetf(__mask);
493    __fmtflags_ |= __fmtfl & __mask;
494    return __r;
495}
496
497// precision
498
499inline _LIBCPP_INLINE_VISIBILITY
500streamsize
501ios_base::precision() const
502{
503    return __precision_;
504}
505
506inline _LIBCPP_INLINE_VISIBILITY
507streamsize
508ios_base::precision(streamsize __prec)
509{
510    streamsize __r = __precision_;
511    __precision_ = __prec;
512    return __r;
513}
514
515// width
516
517inline _LIBCPP_INLINE_VISIBILITY
518streamsize
519ios_base::width() const
520{
521    return __width_;
522}
523
524inline _LIBCPP_INLINE_VISIBILITY
525streamsize
526ios_base::width(streamsize __wide)
527{
528    streamsize __r = __width_;
529    __width_ = __wide;
530    return __r;
531}
532
533// iostate
534
535inline _LIBCPP_INLINE_VISIBILITY
536ios_base::iostate
537ios_base::rdstate() const
538{
539    return __rdstate_;
540}
541
542inline _LIBCPP_INLINE_VISIBILITY
543void
544ios_base::setstate(iostate __state)
545{
546    clear(__rdstate_ | __state);
547}
548
549inline _LIBCPP_INLINE_VISIBILITY
550bool
551ios_base::good() const
552{
553    return __rdstate_ == 0;
554}
555
556inline _LIBCPP_INLINE_VISIBILITY
557bool
558ios_base::eof() const
559{
560    return (__rdstate_ & eofbit) != 0;
561}
562
563inline _LIBCPP_INLINE_VISIBILITY
564bool
565ios_base::fail() const
566{
567    return (__rdstate_ & (failbit | badbit)) != 0;
568}
569
570inline _LIBCPP_INLINE_VISIBILITY
571bool
572ios_base::bad() const
573{
574    return (__rdstate_ & badbit) != 0;
575}
576
577inline _LIBCPP_INLINE_VISIBILITY
578ios_base::iostate
579ios_base::exceptions() const
580{
581    return __exceptions_;
582}
583
584inline _LIBCPP_INLINE_VISIBILITY
585void
586ios_base::exceptions(iostate __iostate)
587{
588    __exceptions_ = __iostate;
589    clear(__rdstate_);
590}
591
592template <class _CharT, class _Traits>
593class _LIBCPP_TEMPLATE_VIS basic_ios
594    : public ios_base
595{
596public:
597    // types:
598    typedef _CharT char_type;
599    typedef _Traits traits_type;
600
601    typedef typename traits_type::int_type int_type;
602    typedef typename traits_type::pos_type pos_type;
603    typedef typename traits_type::off_type off_type;
604
605    static_assert((is_same<_CharT, typename traits_type::char_type>::value),
606                  "traits_type::char_type must be the same type as CharT");
607
608#ifdef _LIBCPP_CXX03_LANG
609    // Preserve the ability to compare with literal 0,
610    // and implicitly convert to bool, but not implicitly convert to int.
611    _LIBCPP_INLINE_VISIBILITY
612    operator void*() const {return fail() ? nullptr : (void*)this;}
613#else
614    _LIBCPP_INLINE_VISIBILITY
615    explicit operator bool() const {return !fail();}
616#endif
617
618    _LIBCPP_INLINE_VISIBILITY bool operator!() const    {return  fail();}
619    _LIBCPP_INLINE_VISIBILITY iostate rdstate() const   {return ios_base::rdstate();}
620    _LIBCPP_INLINE_VISIBILITY void clear(iostate __state = goodbit) {ios_base::clear(__state);}
621    _LIBCPP_INLINE_VISIBILITY void setstate(iostate __state) {ios_base::setstate(__state);}
622    _LIBCPP_INLINE_VISIBILITY bool good() const {return ios_base::good();}
623    _LIBCPP_INLINE_VISIBILITY bool eof() const  {return ios_base::eof();}
624    _LIBCPP_INLINE_VISIBILITY bool fail() const {return ios_base::fail();}
625    _LIBCPP_INLINE_VISIBILITY bool bad() const  {return ios_base::bad();}
626
627    _LIBCPP_INLINE_VISIBILITY iostate exceptions() const {return ios_base::exceptions();}
628    _LIBCPP_INLINE_VISIBILITY void exceptions(iostate __iostate) {ios_base::exceptions(__iostate);}
629
630    // 27.5.4.1 Constructor/destructor:
631    _LIBCPP_INLINE_VISIBILITY
632    explicit basic_ios(basic_streambuf<char_type,traits_type>* __sb);
633    virtual ~basic_ios();
634
635    // 27.5.4.2 Members:
636    _LIBCPP_INLINE_VISIBILITY
637    basic_ostream<char_type, traits_type>* tie() const;
638    _LIBCPP_INLINE_VISIBILITY
639    basic_ostream<char_type, traits_type>* tie(basic_ostream<char_type, traits_type>* __tiestr);
640
641    _LIBCPP_INLINE_VISIBILITY
642    basic_streambuf<char_type, traits_type>* rdbuf() const;
643    _LIBCPP_INLINE_VISIBILITY
644    basic_streambuf<char_type, traits_type>* rdbuf(basic_streambuf<char_type, traits_type>* __sb);
645
646    basic_ios& copyfmt(const basic_ios& __rhs);
647
648    _LIBCPP_INLINE_VISIBILITY
649    char_type fill() const;
650    _LIBCPP_INLINE_VISIBILITY
651    char_type fill(char_type __ch);
652
653    _LIBCPP_INLINE_VISIBILITY
654    locale imbue(const locale& __loc);
655
656    _LIBCPP_INLINE_VISIBILITY
657    char narrow(char_type __c, char __dfault) const;
658    _LIBCPP_INLINE_VISIBILITY
659    char_type widen(char __c) const;
660
661protected:
662    _LIBCPP_INLINE_VISIBILITY
663    basic_ios() {// purposefully does no initialization
664                }
665    _LIBCPP_INLINE_VISIBILITY
666    void init(basic_streambuf<char_type, traits_type>* __sb);
667
668    _LIBCPP_INLINE_VISIBILITY
669    void move(basic_ios& __rhs);
670    _LIBCPP_INLINE_VISIBILITY
671    void move(basic_ios&& __rhs) {move(__rhs);}
672    _LIBCPP_INLINE_VISIBILITY
673    void swap(basic_ios& __rhs) _NOEXCEPT;
674    _LIBCPP_INLINE_VISIBILITY
675    void set_rdbuf(basic_streambuf<char_type, traits_type>* __sb);
676private:
677    basic_ostream<char_type, traits_type>* __tie_;
678    mutable int_type __fill_;
679};
680
681template <class _CharT, class _Traits>
682inline _LIBCPP_INLINE_VISIBILITY
683basic_ios<_CharT, _Traits>::basic_ios(basic_streambuf<char_type,traits_type>* __sb)
684{
685    init(__sb);
686}
687
688template <class _CharT, class _Traits>
689basic_ios<_CharT, _Traits>::~basic_ios()
690{
691}
692
693template <class _CharT, class _Traits>
694inline _LIBCPP_INLINE_VISIBILITY
695void
696basic_ios<_CharT, _Traits>::init(basic_streambuf<char_type, traits_type>* __sb)
697{
698    ios_base::init(__sb);
699    __tie_ = nullptr;
700    __fill_ = traits_type::eof();
701}
702
703template <class _CharT, class _Traits>
704inline _LIBCPP_INLINE_VISIBILITY
705basic_ostream<_CharT, _Traits>*
706basic_ios<_CharT, _Traits>::tie() const
707{
708    return __tie_;
709}
710
711template <class _CharT, class _Traits>
712inline _LIBCPP_INLINE_VISIBILITY
713basic_ostream<_CharT, _Traits>*
714basic_ios<_CharT, _Traits>::tie(basic_ostream<char_type, traits_type>* __tiestr)
715{
716    basic_ostream<char_type, traits_type>* __r = __tie_;
717    __tie_ = __tiestr;
718    return __r;
719}
720
721template <class _CharT, class _Traits>
722inline _LIBCPP_INLINE_VISIBILITY
723basic_streambuf<_CharT, _Traits>*
724basic_ios<_CharT, _Traits>::rdbuf() const
725{
726    return static_cast<basic_streambuf<char_type, traits_type>*>(ios_base::rdbuf());
727}
728
729template <class _CharT, class _Traits>
730inline _LIBCPP_INLINE_VISIBILITY
731basic_streambuf<_CharT, _Traits>*
732basic_ios<_CharT, _Traits>::rdbuf(basic_streambuf<char_type, traits_type>* __sb)
733{
734    basic_streambuf<char_type, traits_type>* __r = rdbuf();
735    ios_base::rdbuf(__sb);
736    return __r;
737}
738
739template <class _CharT, class _Traits>
740inline _LIBCPP_INLINE_VISIBILITY
741locale
742basic_ios<_CharT, _Traits>::imbue(const locale& __loc)
743{
744    locale __r = getloc();
745    ios_base::imbue(__loc);
746    if (rdbuf())
747        rdbuf()->pubimbue(__loc);
748    return __r;
749}
750
751template <class _CharT, class _Traits>
752inline _LIBCPP_INLINE_VISIBILITY
753char
754basic_ios<_CharT, _Traits>::narrow(char_type __c, char __dfault) const
755{
756    return use_facet<ctype<char_type> >(getloc()).narrow(__c, __dfault);
757}
758
759template <class _CharT, class _Traits>
760inline _LIBCPP_INLINE_VISIBILITY
761_CharT
762basic_ios<_CharT, _Traits>::widen(char __c) const
763{
764    return use_facet<ctype<char_type> >(getloc()).widen(__c);
765}
766
767template <class _CharT, class _Traits>
768inline _LIBCPP_INLINE_VISIBILITY
769_CharT
770basic_ios<_CharT, _Traits>::fill() const
771{
772    if (traits_type::eq_int_type(traits_type::eof(), __fill_))
773        __fill_ = widen(' ');
774    return __fill_;
775}
776
777template <class _CharT, class _Traits>
778inline _LIBCPP_INLINE_VISIBILITY
779_CharT
780basic_ios<_CharT, _Traits>::fill(char_type __ch)
781{
782    char_type __r = __fill_;
783    __fill_ = __ch;
784    return __r;
785}
786
787template <class _CharT, class _Traits>
788basic_ios<_CharT, _Traits>&
789basic_ios<_CharT, _Traits>::copyfmt(const basic_ios& __rhs)
790{
791    if (this != &__rhs)
792    {
793        __call_callbacks(erase_event);
794        ios_base::copyfmt(__rhs);
795        __tie_ = __rhs.__tie_;
796        __fill_ = __rhs.__fill_;
797        __call_callbacks(copyfmt_event);
798        exceptions(__rhs.exceptions());
799    }
800    return *this;
801}
802
803template <class _CharT, class _Traits>
804inline _LIBCPP_INLINE_VISIBILITY
805void
806basic_ios<_CharT, _Traits>::move(basic_ios& __rhs)
807{
808    ios_base::move(__rhs);
809    __tie_ = __rhs.__tie_;
810    __rhs.__tie_ = nullptr;
811    __fill_ = __rhs.__fill_;
812}
813
814template <class _CharT, class _Traits>
815inline _LIBCPP_INLINE_VISIBILITY
816void
817basic_ios<_CharT, _Traits>::swap(basic_ios& __rhs) _NOEXCEPT
818{
819    ios_base::swap(__rhs);
820    _VSTD::swap(__tie_, __rhs.__tie_);
821    _VSTD::swap(__fill_, __rhs.__fill_);
822}
823
824template <class _CharT, class _Traits>
825inline _LIBCPP_INLINE_VISIBILITY
826void
827basic_ios<_CharT, _Traits>::set_rdbuf(basic_streambuf<char_type, traits_type>* __sb)
828{
829    ios_base::set_rdbuf(__sb);
830}
831
832inline
833ios_base&
834boolalpha(ios_base& __str)
835{
836    __str.setf(ios_base::boolalpha);
837    return __str;
838}
839
840inline
841ios_base&
842noboolalpha(ios_base& __str)
843{
844    __str.unsetf(ios_base::boolalpha);
845    return __str;
846}
847
848inline
849ios_base&
850showbase(ios_base& __str)
851{
852    __str.setf(ios_base::showbase);
853    return __str;
854}
855
856inline
857ios_base&
858noshowbase(ios_base& __str)
859{
860    __str.unsetf(ios_base::showbase);
861    return __str;
862}
863
864inline
865ios_base&
866showpoint(ios_base& __str)
867{
868    __str.setf(ios_base::showpoint);
869    return __str;
870}
871
872inline
873ios_base&
874noshowpoint(ios_base& __str)
875{
876    __str.unsetf(ios_base::showpoint);
877    return __str;
878}
879
880inline
881ios_base&
882showpos(ios_base& __str)
883{
884    __str.setf(ios_base::showpos);
885    return __str;
886}
887
888inline
889ios_base&
890noshowpos(ios_base& __str)
891{
892    __str.unsetf(ios_base::showpos);
893    return __str;
894}
895
896inline
897ios_base&
898skipws(ios_base& __str)
899{
900    __str.setf(ios_base::skipws);
901    return __str;
902}
903
904inline
905ios_base&
906noskipws(ios_base& __str)
907{
908    __str.unsetf(ios_base::skipws);
909    return __str;
910}
911
912inline
913ios_base&
914uppercase(ios_base& __str)
915{
916    __str.setf(ios_base::uppercase);
917    return __str;
918}
919
920inline
921ios_base&
922nouppercase(ios_base& __str)
923{
924    __str.unsetf(ios_base::uppercase);
925    return __str;
926}
927
928inline
929ios_base&
930unitbuf(ios_base& __str)
931{
932    __str.setf(ios_base::unitbuf);
933    return __str;
934}
935
936inline
937ios_base&
938nounitbuf(ios_base& __str)
939{
940    __str.unsetf(ios_base::unitbuf);
941    return __str;
942}
943
944inline
945ios_base&
946internal(ios_base& __str)
947{
948    __str.setf(ios_base::internal, ios_base::adjustfield);
949    return __str;
950}
951
952inline
953ios_base&
954left(ios_base& __str)
955{
956    __str.setf(ios_base::left, ios_base::adjustfield);
957    return __str;
958}
959
960inline
961ios_base&
962right(ios_base& __str)
963{
964    __str.setf(ios_base::right, ios_base::adjustfield);
965    return __str;
966}
967
968inline
969ios_base&
970dec(ios_base& __str)
971{
972    __str.setf(ios_base::dec, ios_base::basefield);
973    return __str;
974}
975
976inline
977ios_base&
978hex(ios_base& __str)
979{
980    __str.setf(ios_base::hex, ios_base::basefield);
981    return __str;
982}
983
984inline
985ios_base&
986oct(ios_base& __str)
987{
988    __str.setf(ios_base::oct, ios_base::basefield);
989    return __str;
990}
991
992inline
993ios_base&
994fixed(ios_base& __str)
995{
996    __str.setf(ios_base::fixed, ios_base::floatfield);
997    return __str;
998}
999
1000inline
1001ios_base&
1002scientific(ios_base& __str)
1003{
1004    __str.setf(ios_base::scientific, ios_base::floatfield);
1005    return __str;
1006}
1007
1008inline
1009ios_base&
1010hexfloat(ios_base& __str)
1011{
1012    __str.setf(ios_base::fixed | ios_base::scientific, ios_base::floatfield);
1013    return __str;
1014}
1015
1016inline
1017ios_base&
1018defaultfloat(ios_base& __str)
1019{
1020    __str.unsetf(ios_base::floatfield);
1021    return __str;
1022}
1023
1024_LIBCPP_END_NAMESPACE_STD
1025
1026#endif // _LIBCPP_IOS
1027