xref: /freebsd/contrib/llvm-project/libcxx/include/ios (revision a50d73d5782a351ad83e8d1f84d11720a12e70d3) 
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
215#if defined(_LIBCPP_HAS_NO_LOCALIZATION)
216#   error "The iostreams library is not supported since libc++ has been configured without support for localization."
217#endif
218
219#include <__assert> // all public C++ headers provide the assertion handler
220#include <__ios/fpos.h>
221#include <__locale>
222#include <__utility/swap.h>
223#include <system_error>
224#include <version>
225
226// standard-mandated includes
227#include <iosfwd>
228
229#if !defined(_LIBCPP_HAS_NO_ATOMIC_HEADER)
230#include <atomic>     // for __xindex_
231#endif
232
233#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
234#  pragma GCC system_header
235#endif
236
237_LIBCPP_BEGIN_NAMESPACE_STD
238
239typedef ptrdiff_t streamsize;
240
241class _LIBCPP_TYPE_VIS ios_base
242{
243public:
244    class _LIBCPP_EXCEPTION_ABI failure;
245
246    typedef unsigned int fmtflags;
247    static const fmtflags boolalpha   = 0x0001;
248    static const fmtflags dec         = 0x0002;
249    static const fmtflags fixed       = 0x0004;
250    static const fmtflags hex         = 0x0008;
251    static const fmtflags internal    = 0x0010;
252    static const fmtflags left        = 0x0020;
253    static const fmtflags oct         = 0x0040;
254    static const fmtflags right       = 0x0080;
255    static const fmtflags scientific  = 0x0100;
256    static const fmtflags showbase    = 0x0200;
257    static const fmtflags showpoint   = 0x0400;
258    static const fmtflags showpos     = 0x0800;
259    static const fmtflags skipws      = 0x1000;
260    static const fmtflags unitbuf     = 0x2000;
261    static const fmtflags uppercase   = 0x4000;
262    static const fmtflags adjustfield = left | right | internal;
263    static const fmtflags basefield   = dec | oct | hex;
264    static const fmtflags floatfield  = scientific | fixed;
265
266    typedef unsigned int iostate;
267    static const iostate badbit  = 0x1;
268    static const iostate eofbit  = 0x2;
269    static const iostate failbit = 0x4;
270    static const iostate goodbit = 0x0;
271
272    typedef unsigned int openmode;
273    static const openmode app    = 0x01;
274    static const openmode ate    = 0x02;
275    static const openmode binary = 0x04;
276    static const openmode in     = 0x08;
277    static const openmode out    = 0x10;
278    static const openmode trunc  = 0x20;
279
280    enum seekdir {beg, cur, end};
281
282#if _LIBCPP_STD_VER <= 14
283    typedef iostate      io_state;
284    typedef openmode     open_mode;
285    typedef seekdir      seek_dir;
286
287    typedef _VSTD::streamoff streamoff;
288    typedef _VSTD::streampos streampos;
289#endif
290
291    class _LIBCPP_TYPE_VIS Init;
292
293    // 27.5.2.2 fmtflags state:
294    _LIBCPP_INLINE_VISIBILITY fmtflags flags() const;
295    _LIBCPP_INLINE_VISIBILITY fmtflags flags(fmtflags __fmtfl);
296    _LIBCPP_INLINE_VISIBILITY fmtflags setf(fmtflags __fmtfl);
297    _LIBCPP_INLINE_VISIBILITY fmtflags setf(fmtflags __fmtfl, fmtflags __mask);
298    _LIBCPP_INLINE_VISIBILITY void unsetf(fmtflags __mask);
299
300    _LIBCPP_INLINE_VISIBILITY streamsize precision() const;
301    _LIBCPP_INLINE_VISIBILITY streamsize precision(streamsize __prec);
302    _LIBCPP_INLINE_VISIBILITY streamsize width() const;
303    _LIBCPP_INLINE_VISIBILITY streamsize width(streamsize __wide);
304
305    // 27.5.2.3 locales:
306    locale imbue(const locale& __loc);
307    locale getloc() const;
308
309    // 27.5.2.5 storage:
310    static int xalloc();
311    long& iword(int __index);
312    void*& pword(int __index);
313
314    // destructor
315    virtual ~ios_base();
316
317    // 27.5.2.6 callbacks;
318    enum event { erase_event, imbue_event, copyfmt_event };
319    typedef void (*event_callback)(event, ios_base&, int __index);
320    void register_callback(event_callback __fn, int __index);
321
322    ios_base(const ios_base&) = delete;
323    ios_base& operator=(const ios_base&) = delete;
324
325    static bool sync_with_stdio(bool __sync = true);
326
327    _LIBCPP_INLINE_VISIBILITY iostate rdstate() const;
328    void clear(iostate __state = goodbit);
329    _LIBCPP_INLINE_VISIBILITY void setstate(iostate __state);
330
331    _LIBCPP_INLINE_VISIBILITY bool good() const;
332    _LIBCPP_INLINE_VISIBILITY bool eof() const;
333    _LIBCPP_INLINE_VISIBILITY bool fail() const;
334    _LIBCPP_INLINE_VISIBILITY bool bad() const;
335
336    _LIBCPP_INLINE_VISIBILITY iostate exceptions() const;
337    _LIBCPP_INLINE_VISIBILITY void exceptions(iostate __iostate);
338
339    void __set_badbit_and_consider_rethrow();
340    void __set_failbit_and_consider_rethrow();
341
342    _LIBCPP_INLINE_VISIBILITY
343    void __setstate_nothrow(iostate __state)
344    {
345        if (__rdbuf_)
346            __rdstate_ |= __state;
347        else
348            __rdstate_ |= __state | ios_base::badbit;
349    }
350
351protected:
352    _LIBCPP_INLINE_VISIBILITY
353    ios_base() {// purposefully does no initialization
354               }
355
356    void init(void* __sb);
357    _LIBCPP_INLINE_VISIBILITY void* rdbuf() const {return __rdbuf_;}
358
359    _LIBCPP_INLINE_VISIBILITY
360    void rdbuf(void* __sb)
361    {
362        __rdbuf_ = __sb;
363        clear();
364    }
365
366    void __call_callbacks(event);
367    void copyfmt(const ios_base&);
368    void move(ios_base&);
369    void swap(ios_base&) _NOEXCEPT;
370
371    _LIBCPP_INLINE_VISIBILITY
372    void set_rdbuf(void* __sb)
373    {
374        __rdbuf_ = __sb;
375    }
376
377private:
378    // All data members must be scalars
379    fmtflags        __fmtflags_;
380    streamsize      __precision_;
381    streamsize      __width_;
382    iostate         __rdstate_;
383    iostate         __exceptions_;
384    void*           __rdbuf_;
385    void*           __loc_;
386    event_callback* __fn_;
387    int*            __index_;
388    size_t          __event_size_;
389    size_t          __event_cap_;
390// TODO(EricWF): Enable this for both Clang and GCC. Currently it is only
391// enabled with clang.
392#if defined(_LIBCPP_HAS_C_ATOMIC_IMP) && !defined(_LIBCPP_HAS_NO_THREADS)
393    static atomic<int> __xindex_;
394#else
395    static int      __xindex_;
396#endif
397    long*           __iarray_;
398    size_t          __iarray_size_;
399    size_t          __iarray_cap_;
400    void**          __parray_;
401    size_t          __parray_size_;
402    size_t          __parray_cap_;
403};
404
405//enum class io_errc
406_LIBCPP_DECLARE_STRONG_ENUM(io_errc)
407{
408    stream = 1
409};
410_LIBCPP_DECLARE_STRONG_ENUM_EPILOG(io_errc)
411
412template <>
413struct _LIBCPP_TEMPLATE_VIS is_error_code_enum<io_errc> : public true_type { };
414
415#ifdef _LIBCPP_CXX03_LANG
416template <>
417struct _LIBCPP_TEMPLATE_VIS is_error_code_enum<io_errc::__lx> : public true_type { };
418#endif
419
420_LIBCPP_FUNC_VIS
421const error_category& iostream_category() _NOEXCEPT;
422
423inline _LIBCPP_INLINE_VISIBILITY
424error_code
425make_error_code(io_errc __e) _NOEXCEPT
426{
427    return error_code(static_cast<int>(__e), iostream_category());
428}
429
430inline _LIBCPP_INLINE_VISIBILITY
431error_condition
432make_error_condition(io_errc __e) _NOEXCEPT
433{
434    return error_condition(static_cast<int>(__e), iostream_category());
435}
436
437class _LIBCPP_EXCEPTION_ABI ios_base::failure
438    : public system_error
439{
440public:
441    explicit failure(const string& __msg, const error_code& __ec = io_errc::stream);
442    explicit failure(const char* __msg, const error_code& __ec = io_errc::stream);
443    failure(const failure&) _NOEXCEPT = default;
444    virtual ~failure() _NOEXCEPT;
445};
446
447_LIBCPP_NORETURN inline _LIBCPP_INLINE_VISIBILITY
448void __throw_failure(char const* __msg) {
449#ifndef _LIBCPP_NO_EXCEPTIONS
450    throw ios_base::failure(__msg);
451#else
452    ((void)__msg);
453    _VSTD::abort();
454#endif
455}
456
457class _LIBCPP_TYPE_VIS ios_base::Init
458{
459public:
460    Init();
461    ~Init();
462};
463
464// fmtflags
465
466inline _LIBCPP_INLINE_VISIBILITY
467ios_base::fmtflags
468ios_base::flags() const
469{
470    return __fmtflags_;
471}
472
473inline _LIBCPP_INLINE_VISIBILITY
474ios_base::fmtflags
475ios_base::flags(fmtflags __fmtfl)
476{
477    fmtflags __r = __fmtflags_;
478    __fmtflags_ = __fmtfl;
479    return __r;
480}
481
482inline _LIBCPP_INLINE_VISIBILITY
483ios_base::fmtflags
484ios_base::setf(fmtflags __fmtfl)
485{
486    fmtflags __r = __fmtflags_;
487    __fmtflags_ |= __fmtfl;
488    return __r;
489}
490
491inline _LIBCPP_INLINE_VISIBILITY
492void
493ios_base::unsetf(fmtflags __mask)
494{
495    __fmtflags_ &= ~__mask;
496}
497
498inline _LIBCPP_INLINE_VISIBILITY
499ios_base::fmtflags
500ios_base::setf(fmtflags __fmtfl, fmtflags __mask)
501{
502    fmtflags __r = __fmtflags_;
503    unsetf(__mask);
504    __fmtflags_ |= __fmtfl & __mask;
505    return __r;
506}
507
508// precision
509
510inline _LIBCPP_INLINE_VISIBILITY
511streamsize
512ios_base::precision() const
513{
514    return __precision_;
515}
516
517inline _LIBCPP_INLINE_VISIBILITY
518streamsize
519ios_base::precision(streamsize __prec)
520{
521    streamsize __r = __precision_;
522    __precision_ = __prec;
523    return __r;
524}
525
526// width
527
528inline _LIBCPP_INLINE_VISIBILITY
529streamsize
530ios_base::width() const
531{
532    return __width_;
533}
534
535inline _LIBCPP_INLINE_VISIBILITY
536streamsize
537ios_base::width(streamsize __wide)
538{
539    streamsize __r = __width_;
540    __width_ = __wide;
541    return __r;
542}
543
544// iostate
545
546inline _LIBCPP_INLINE_VISIBILITY
547ios_base::iostate
548ios_base::rdstate() const
549{
550    return __rdstate_;
551}
552
553inline _LIBCPP_INLINE_VISIBILITY
554void
555ios_base::setstate(iostate __state)
556{
557    clear(__rdstate_ | __state);
558}
559
560inline _LIBCPP_INLINE_VISIBILITY
561bool
562ios_base::good() const
563{
564    return __rdstate_ == 0;
565}
566
567inline _LIBCPP_INLINE_VISIBILITY
568bool
569ios_base::eof() const
570{
571    return (__rdstate_ & eofbit) != 0;
572}
573
574inline _LIBCPP_INLINE_VISIBILITY
575bool
576ios_base::fail() const
577{
578    return (__rdstate_ & (failbit | badbit)) != 0;
579}
580
581inline _LIBCPP_INLINE_VISIBILITY
582bool
583ios_base::bad() const
584{
585    return (__rdstate_ & badbit) != 0;
586}
587
588inline _LIBCPP_INLINE_VISIBILITY
589ios_base::iostate
590ios_base::exceptions() const
591{
592    return __exceptions_;
593}
594
595inline _LIBCPP_INLINE_VISIBILITY
596void
597ios_base::exceptions(iostate __iostate)
598{
599    __exceptions_ = __iostate;
600    clear(__rdstate_);
601}
602
603template <class _CharT, class _Traits>
604class _LIBCPP_TEMPLATE_VIS basic_ios
605    : public ios_base
606{
607public:
608    // types:
609    typedef _CharT char_type;
610    typedef _Traits traits_type;
611
612    typedef typename traits_type::int_type int_type;
613    typedef typename traits_type::pos_type pos_type;
614    typedef typename traits_type::off_type off_type;
615
616    static_assert((is_same<_CharT, typename traits_type::char_type>::value),
617                  "traits_type::char_type must be the same type as CharT");
618
619#ifdef _LIBCPP_CXX03_LANG
620    // Preserve the ability to compare with literal 0,
621    // and implicitly convert to bool, but not implicitly convert to int.
622    _LIBCPP_INLINE_VISIBILITY
623    operator void*() const {return fail() ? nullptr : (void*)this;}
624#else
625    _LIBCPP_INLINE_VISIBILITY
626    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    _LIBCPP_INLINE_VISIBILITY
682    void move(basic_ios&& __rhs) {move(__rhs);}
683    _LIBCPP_INLINE_VISIBILITY
684    void swap(basic_ios& __rhs) _NOEXCEPT;
685    _LIBCPP_INLINE_VISIBILITY
686    void set_rdbuf(basic_streambuf<char_type, traits_type>* __sb);
687private:
688    basic_ostream<char_type, traits_type>* __tie_;
689    mutable int_type __fill_;
690};
691
692template <class _CharT, class _Traits>
693inline _LIBCPP_INLINE_VISIBILITY
694basic_ios<_CharT, _Traits>::basic_ios(basic_streambuf<char_type,traits_type>* __sb)
695{
696    init(__sb);
697}
698
699template <class _CharT, class _Traits>
700basic_ios<_CharT, _Traits>::~basic_ios()
701{
702}
703
704template <class _CharT, class _Traits>
705inline _LIBCPP_INLINE_VISIBILITY
706void
707basic_ios<_CharT, _Traits>::init(basic_streambuf<char_type, traits_type>* __sb)
708{
709    ios_base::init(__sb);
710    __tie_ = nullptr;
711    __fill_ = traits_type::eof();
712}
713
714template <class _CharT, class _Traits>
715inline _LIBCPP_INLINE_VISIBILITY
716basic_ostream<_CharT, _Traits>*
717basic_ios<_CharT, _Traits>::tie() const
718{
719    return __tie_;
720}
721
722template <class _CharT, class _Traits>
723inline _LIBCPP_INLINE_VISIBILITY
724basic_ostream<_CharT, _Traits>*
725basic_ios<_CharT, _Traits>::tie(basic_ostream<char_type, traits_type>* __tiestr)
726{
727    basic_ostream<char_type, traits_type>* __r = __tie_;
728    __tie_ = __tiestr;
729    return __r;
730}
731
732template <class _CharT, class _Traits>
733inline _LIBCPP_INLINE_VISIBILITY
734basic_streambuf<_CharT, _Traits>*
735basic_ios<_CharT, _Traits>::rdbuf() const
736{
737    return static_cast<basic_streambuf<char_type, traits_type>*>(ios_base::rdbuf());
738}
739
740template <class _CharT, class _Traits>
741inline _LIBCPP_INLINE_VISIBILITY
742basic_streambuf<_CharT, _Traits>*
743basic_ios<_CharT, _Traits>::rdbuf(basic_streambuf<char_type, traits_type>* __sb)
744{
745    basic_streambuf<char_type, traits_type>* __r = rdbuf();
746    ios_base::rdbuf(__sb);
747    return __r;
748}
749
750template <class _CharT, class _Traits>
751inline _LIBCPP_INLINE_VISIBILITY
752locale
753basic_ios<_CharT, _Traits>::imbue(const locale& __loc)
754{
755    locale __r = getloc();
756    ios_base::imbue(__loc);
757    if (rdbuf())
758        rdbuf()->pubimbue(__loc);
759    return __r;
760}
761
762template <class _CharT, class _Traits>
763inline _LIBCPP_INLINE_VISIBILITY
764char
765basic_ios<_CharT, _Traits>::narrow(char_type __c, char __dfault) const
766{
767    return use_facet<ctype<char_type> >(getloc()).narrow(__c, __dfault);
768}
769
770template <class _CharT, class _Traits>
771inline _LIBCPP_INLINE_VISIBILITY
772_CharT
773basic_ios<_CharT, _Traits>::widen(char __c) const
774{
775    return use_facet<ctype<char_type> >(getloc()).widen(__c);
776}
777
778template <class _CharT, class _Traits>
779inline _LIBCPP_INLINE_VISIBILITY
780_CharT
781basic_ios<_CharT, _Traits>::fill() const
782{
783    if (traits_type::eq_int_type(traits_type::eof(), __fill_))
784        __fill_ = widen(' ');
785    return __fill_;
786}
787
788template <class _CharT, class _Traits>
789inline _LIBCPP_INLINE_VISIBILITY
790_CharT
791basic_ios<_CharT, _Traits>::fill(char_type __ch)
792{
793    if (traits_type::eq_int_type(traits_type::eof(), __fill_))
794        __fill_ = widen(' ');
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_ = nullptr;
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
846ios_base&
847boolalpha(ios_base& __str)
848{
849    __str.setf(ios_base::boolalpha);
850    return __str;
851}
852
853inline
854ios_base&
855noboolalpha(ios_base& __str)
856{
857    __str.unsetf(ios_base::boolalpha);
858    return __str;
859}
860
861inline
862ios_base&
863showbase(ios_base& __str)
864{
865    __str.setf(ios_base::showbase);
866    return __str;
867}
868
869inline
870ios_base&
871noshowbase(ios_base& __str)
872{
873    __str.unsetf(ios_base::showbase);
874    return __str;
875}
876
877inline
878ios_base&
879showpoint(ios_base& __str)
880{
881    __str.setf(ios_base::showpoint);
882    return __str;
883}
884
885inline
886ios_base&
887noshowpoint(ios_base& __str)
888{
889    __str.unsetf(ios_base::showpoint);
890    return __str;
891}
892
893inline
894ios_base&
895showpos(ios_base& __str)
896{
897    __str.setf(ios_base::showpos);
898    return __str;
899}
900
901inline
902ios_base&
903noshowpos(ios_base& __str)
904{
905    __str.unsetf(ios_base::showpos);
906    return __str;
907}
908
909inline
910ios_base&
911skipws(ios_base& __str)
912{
913    __str.setf(ios_base::skipws);
914    return __str;
915}
916
917inline
918ios_base&
919noskipws(ios_base& __str)
920{
921    __str.unsetf(ios_base::skipws);
922    return __str;
923}
924
925inline
926ios_base&
927uppercase(ios_base& __str)
928{
929    __str.setf(ios_base::uppercase);
930    return __str;
931}
932
933inline
934ios_base&
935nouppercase(ios_base& __str)
936{
937    __str.unsetf(ios_base::uppercase);
938    return __str;
939}
940
941inline
942ios_base&
943unitbuf(ios_base& __str)
944{
945    __str.setf(ios_base::unitbuf);
946    return __str;
947}
948
949inline
950ios_base&
951nounitbuf(ios_base& __str)
952{
953    __str.unsetf(ios_base::unitbuf);
954    return __str;
955}
956
957inline
958ios_base&
959internal(ios_base& __str)
960{
961    __str.setf(ios_base::internal, ios_base::adjustfield);
962    return __str;
963}
964
965inline
966ios_base&
967left(ios_base& __str)
968{
969    __str.setf(ios_base::left, ios_base::adjustfield);
970    return __str;
971}
972
973inline
974ios_base&
975right(ios_base& __str)
976{
977    __str.setf(ios_base::right, ios_base::adjustfield);
978    return __str;
979}
980
981inline
982ios_base&
983dec(ios_base& __str)
984{
985    __str.setf(ios_base::dec, ios_base::basefield);
986    return __str;
987}
988
989inline
990ios_base&
991hex(ios_base& __str)
992{
993    __str.setf(ios_base::hex, ios_base::basefield);
994    return __str;
995}
996
997inline
998ios_base&
999oct(ios_base& __str)
1000{
1001    __str.setf(ios_base::oct, ios_base::basefield);
1002    return __str;
1003}
1004
1005inline
1006ios_base&
1007fixed(ios_base& __str)
1008{
1009    __str.setf(ios_base::fixed, ios_base::floatfield);
1010    return __str;
1011}
1012
1013inline
1014ios_base&
1015scientific(ios_base& __str)
1016{
1017    __str.setf(ios_base::scientific, ios_base::floatfield);
1018    return __str;
1019}
1020
1021inline
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
1030ios_base&
1031defaultfloat(ios_base& __str)
1032{
1033    __str.unsetf(ios_base::floatfield);
1034    return __str;
1035}
1036
1037_LIBCPP_END_NAMESPACE_STD
1038
1039#endif // _LIBCPP_IOS
1040