2 //===---------------------------- ios -------------------------------------===//
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
8 //===----------------------------------------------------------------------===//
21 typedef OFF_T streamoff;
22 typedef SZ_T streamsize;
23 template <class stateT> class fpos;
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;
51 static constexpr iostate badbit;
52 static constexpr iostate eofbit;
53 static constexpr iostate failbit;
54 static constexpr iostate goodbit;
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;
65 static constexpr seekdir beg;
66 static constexpr seekdir cur;
67 static constexpr seekdir end;
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);
78 streamsize precision() const;
79 streamsize precision(streamsize prec);
80 streamsize width() const;
81 streamsize width(streamsize wide);
84 locale imbue(const locale& loc);
85 locale getloc() const;
89 long& iword(int index);
90 void*& pword(int index);
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);
100 ios_base(const ios_base&) = delete;
101 ios_base& operator=(const ios_base&) = delete;
103 static bool sync_with_stdio(bool sync = true);
109 template <class charT, class traits = char_traits<charT> >
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;
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);
131 iostate exceptions() const;
132 void exceptions(iostate except);
134 // 27.5.4.1 Constructor/destructor:
135 explicit basic_ios(basic_streambuf<charT,traits>* sb);
136 virtual ~basic_ios();
139 basic_ostream<charT,traits>* tie() const;
140 basic_ostream<charT,traits>* tie(basic_ostream<charT,traits>* tiestr);
142 basic_streambuf<charT,traits>* rdbuf() const;
143 basic_streambuf<charT,traits>* rdbuf(basic_streambuf<charT,traits>* sb);
145 basic_ios& copyfmt(const basic_ios& rhs);
147 char_type fill() const;
148 char_type fill(char_type ch);
150 locale imbue(const locale& loc);
152 char narrow(char_type c, char dfault) const;
153 char_type widen(char c) const;
155 basic_ios(const basic_ios& ) = delete;
156 basic_ios& operator=(const basic_ios&) = delete;
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);
166 // 27.5.5, manipulators:
167 ios_base& boolalpha (ios_base& str);
168 ios_base& noboolalpha(ios_base& str);
169 ios_base& showbase (ios_base& str);
170 ios_base& noshowbase (ios_base& str);
171 ios_base& showpoint (ios_base& str);
172 ios_base& noshowpoint(ios_base& str);
173 ios_base& showpos (ios_base& str);
174 ios_base& noshowpos (ios_base& str);
175 ios_base& skipws (ios_base& str);
176 ios_base& noskipws (ios_base& str);
177 ios_base& uppercase (ios_base& str);
178 ios_base& nouppercase(ios_base& str);
179 ios_base& unitbuf (ios_base& str);
180 ios_base& nounitbuf (ios_base& str);
182 // 27.5.5.2 adjustfield:
183 ios_base& internal (ios_base& str);
184 ios_base& left (ios_base& str);
185 ios_base& right (ios_base& str);
187 // 27.5.5.3 basefield:
188 ios_base& dec (ios_base& str);
189 ios_base& hex (ios_base& str);
190 ios_base& oct (ios_base& str);
192 // 27.5.5.4 floatfield:
193 ios_base& fixed (ios_base& str);
194 ios_base& scientific (ios_base& str);
195 ios_base& hexfloat (ios_base& str);
196 ios_base& defaultfloat(ios_base& str);
198 // 27.5.5.5 error reporting:
204 concept_map ErrorCodeEnum<io_errc> { };
205 error_code make_error_code(io_errc e) noexcept;
206 error_condition make_error_condition(io_errc e) noexcept;
207 storage-class-specifier const error_category& iostream_category() noexcept;
216 #include <system_error>
218 #if !defined(_LIBCPP_HAS_NO_ATOMIC_HEADER)
219 #include <atomic> // for __xindex_
222 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
223 #pragma GCC system_header
226 _LIBCPP_BEGIN_NAMESPACE_STD
228 typedef ptrdiff_t streamsize;
230 class _LIBCPP_TYPE_VIS ios_base
233 class _LIBCPP_EXCEPTION_ABI failure;
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;
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;
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;
269 enum seekdir {beg, cur, end};
271 #if _LIBCPP_STD_VER <= 14
272 typedef iostate io_state;
273 typedef openmode open_mode;
274 typedef seekdir seek_dir;
276 typedef _VSTD::streamoff streamoff;
277 typedef _VSTD::streampos streampos;
280 class _LIBCPP_TYPE_VIS Init;
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);
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);
295 locale imbue(const locale& __loc);
296 locale getloc() const;
300 long& iword(int __index);
301 void*& pword(int __index);
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);
312 ios_base(const ios_base&); // = delete;
313 ios_base& operator=(const ios_base&); // = delete;
316 static bool sync_with_stdio(bool __sync = true);
318 _LIBCPP_INLINE_VISIBILITY iostate rdstate() const;
319 void clear(iostate __state = goodbit);
320 _LIBCPP_INLINE_VISIBILITY void setstate(iostate __state);
322 _LIBCPP_INLINE_VISIBILITY bool good() const;
323 _LIBCPP_INLINE_VISIBILITY bool eof() const;
324 _LIBCPP_INLINE_VISIBILITY bool fail() const;
325 _LIBCPP_INLINE_VISIBILITY bool bad() const;
327 _LIBCPP_INLINE_VISIBILITY iostate exceptions() const;
328 _LIBCPP_INLINE_VISIBILITY void exceptions(iostate __iostate);
330 void __set_badbit_and_consider_rethrow();
331 void __set_failbit_and_consider_rethrow();
333 _LIBCPP_INLINE_VISIBILITY
334 void __setstate_nothrow(iostate __state)
337 __rdstate_ |= __state;
339 __rdstate_ |= __state | ios_base::badbit;
343 _LIBCPP_INLINE_VISIBILITY
344 ios_base() {// purposefully does no initialization
347 void init(void* __sb);
348 _LIBCPP_INLINE_VISIBILITY void* rdbuf() const {return __rdbuf_;}
350 _LIBCPP_INLINE_VISIBILITY
351 void rdbuf(void* __sb)
357 void __call_callbacks(event);
358 void copyfmt(const ios_base&);
359 void move(ios_base&);
360 void swap(ios_base&) _NOEXCEPT;
362 _LIBCPP_INLINE_VISIBILITY
363 void set_rdbuf(void* __sb)
369 // All data members must be scalars
370 fmtflags __fmtflags_;
371 streamsize __precision_;
374 iostate __exceptions_;
377 event_callback* __fn_;
379 size_t __event_size_;
381 // TODO(EricWF): Enable this for both Clang and GCC. Currently it is only
382 // enabled with clang.
383 #if defined(_LIBCPP_HAS_C_ATOMIC_IMP) && !defined(_LIBCPP_HAS_NO_THREADS)
384 static atomic<int> __xindex_;
386 static int __xindex_;
389 size_t __iarray_size_;
390 size_t __iarray_cap_;
392 size_t __parray_size_;
393 size_t __parray_cap_;
397 _LIBCPP_DECLARE_STRONG_ENUM(io_errc)
401 _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(io_errc)
404 struct _LIBCPP_TEMPLATE_VIS is_error_code_enum<io_errc> : public true_type { };
406 #ifdef _LIBCPP_HAS_NO_STRONG_ENUMS
408 struct _LIBCPP_TEMPLATE_VIS is_error_code_enum<io_errc::__lx> : public true_type { };
412 const error_category& iostream_category() _NOEXCEPT;
414 inline _LIBCPP_INLINE_VISIBILITY
416 make_error_code(io_errc __e) _NOEXCEPT
418 return error_code(static_cast<int>(__e), iostream_category());
421 inline _LIBCPP_INLINE_VISIBILITY
423 make_error_condition(io_errc __e) _NOEXCEPT
425 return error_condition(static_cast<int>(__e), iostream_category());
428 class _LIBCPP_EXCEPTION_ABI ios_base::failure
429 : public system_error
432 explicit failure(const string& __msg, const error_code& __ec = io_errc::stream);
433 explicit failure(const char* __msg, const error_code& __ec = io_errc::stream);
434 virtual ~failure() throw();
437 _LIBCPP_NORETURN inline _LIBCPP_INLINE_VISIBILITY
438 void __throw_failure(char const* __msg) {
439 #ifndef _LIBCPP_NO_EXCEPTIONS
440 throw ios_base::failure(__msg);
447 class _LIBCPP_TYPE_VIS ios_base::Init
456 inline _LIBCPP_INLINE_VISIBILITY
458 ios_base::flags() const
463 inline _LIBCPP_INLINE_VISIBILITY
465 ios_base::flags(fmtflags __fmtfl)
467 fmtflags __r = __fmtflags_;
468 __fmtflags_ = __fmtfl;
472 inline _LIBCPP_INLINE_VISIBILITY
474 ios_base::setf(fmtflags __fmtfl)
476 fmtflags __r = __fmtflags_;
477 __fmtflags_ |= __fmtfl;
481 inline _LIBCPP_INLINE_VISIBILITY
483 ios_base::unsetf(fmtflags __mask)
485 __fmtflags_ &= ~__mask;
488 inline _LIBCPP_INLINE_VISIBILITY
490 ios_base::setf(fmtflags __fmtfl, fmtflags __mask)
492 fmtflags __r = __fmtflags_;
494 __fmtflags_ |= __fmtfl & __mask;
500 inline _LIBCPP_INLINE_VISIBILITY
502 ios_base::precision() const
507 inline _LIBCPP_INLINE_VISIBILITY
509 ios_base::precision(streamsize __prec)
511 streamsize __r = __precision_;
512 __precision_ = __prec;
518 inline _LIBCPP_INLINE_VISIBILITY
520 ios_base::width() const
525 inline _LIBCPP_INLINE_VISIBILITY
527 ios_base::width(streamsize __wide)
529 streamsize __r = __width_;
536 inline _LIBCPP_INLINE_VISIBILITY
538 ios_base::rdstate() const
543 inline _LIBCPP_INLINE_VISIBILITY
545 ios_base::setstate(iostate __state)
547 clear(__rdstate_ | __state);
550 inline _LIBCPP_INLINE_VISIBILITY
552 ios_base::good() const
554 return __rdstate_ == 0;
557 inline _LIBCPP_INLINE_VISIBILITY
559 ios_base::eof() const
561 return (__rdstate_ & eofbit) != 0;
564 inline _LIBCPP_INLINE_VISIBILITY
566 ios_base::fail() const
568 return (__rdstate_ & (failbit | badbit)) != 0;
571 inline _LIBCPP_INLINE_VISIBILITY
573 ios_base::bad() const
575 return (__rdstate_ & badbit) != 0;
578 inline _LIBCPP_INLINE_VISIBILITY
580 ios_base::exceptions() const
582 return __exceptions_;
585 inline _LIBCPP_INLINE_VISIBILITY
587 ios_base::exceptions(iostate __iostate)
589 __exceptions_ = __iostate;
593 #if defined(_LIBCPP_CXX03_LANG)
594 struct _LIBCPP_TYPE_VIS __cxx03_bool {
595 typedef void (__cxx03_bool::*__bool_type)();
596 void __true_value() {}
600 template <class _CharT, class _Traits>
601 class _LIBCPP_TEMPLATE_VIS basic_ios
606 typedef _CharT char_type;
607 typedef _Traits traits_type;
609 typedef typename traits_type::int_type int_type;
610 typedef typename traits_type::pos_type pos_type;
611 typedef typename traits_type::off_type off_type;
613 static_assert((is_same<_CharT, typename traits_type::char_type>::value),
614 "traits_type::char_type must be the same type as CharT");
616 // __true_value will generate undefined references when linking unless
617 // we give it internal linkage.
619 #if defined(_LIBCPP_CXX03_LANG)
620 _LIBCPP_INLINE_VISIBILITY
621 operator __cxx03_bool::__bool_type() const {
622 return !fail() ? &__cxx03_bool::__true_value : nullptr;
625 _LIBCPP_INLINE_VISIBILITY
626 _LIBCPP_EXPLICIT operator bool() const {return !fail();}
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();}
638 _LIBCPP_INLINE_VISIBILITY iostate exceptions() const {return ios_base::exceptions();}
639 _LIBCPP_INLINE_VISIBILITY void exceptions(iostate __iostate) {ios_base::exceptions(__iostate);}
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();
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);
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);
657 basic_ios& copyfmt(const basic_ios& __rhs);
659 _LIBCPP_INLINE_VISIBILITY
660 char_type fill() const;
661 _LIBCPP_INLINE_VISIBILITY
662 char_type fill(char_type __ch);
664 _LIBCPP_INLINE_VISIBILITY
665 locale imbue(const locale& __loc);
667 _LIBCPP_INLINE_VISIBILITY
668 char narrow(char_type __c, char __dfault) const;
669 _LIBCPP_INLINE_VISIBILITY
670 char_type widen(char __c) const;
673 _LIBCPP_INLINE_VISIBILITY
674 basic_ios() {// purposefully does no initialization
676 _LIBCPP_INLINE_VISIBILITY
677 void init(basic_streambuf<char_type, traits_type>* __sb);
679 _LIBCPP_INLINE_VISIBILITY
680 void move(basic_ios& __rhs);
681 #ifndef _LIBCPP_CXX03_LANG
682 _LIBCPP_INLINE_VISIBILITY
683 void move(basic_ios&& __rhs) {move(__rhs);}
685 _LIBCPP_INLINE_VISIBILITY
686 void swap(basic_ios& __rhs) _NOEXCEPT;
687 _LIBCPP_INLINE_VISIBILITY
688 void set_rdbuf(basic_streambuf<char_type, traits_type>* __sb);
690 basic_ostream<char_type, traits_type>* __tie_;
691 mutable int_type __fill_;
694 template <class _CharT, class _Traits>
695 inline _LIBCPP_INLINE_VISIBILITY
696 basic_ios<_CharT, _Traits>::basic_ios(basic_streambuf<char_type,traits_type>* __sb)
701 template <class _CharT, class _Traits>
702 basic_ios<_CharT, _Traits>::~basic_ios()
706 template <class _CharT, class _Traits>
707 inline _LIBCPP_INLINE_VISIBILITY
709 basic_ios<_CharT, _Traits>::init(basic_streambuf<char_type, traits_type>* __sb)
711 ios_base::init(__sb);
713 __fill_ = traits_type::eof();
716 template <class _CharT, class _Traits>
717 inline _LIBCPP_INLINE_VISIBILITY
718 basic_ostream<_CharT, _Traits>*
719 basic_ios<_CharT, _Traits>::tie() const
724 template <class _CharT, class _Traits>
725 inline _LIBCPP_INLINE_VISIBILITY
726 basic_ostream<_CharT, _Traits>*
727 basic_ios<_CharT, _Traits>::tie(basic_ostream<char_type, traits_type>* __tiestr)
729 basic_ostream<char_type, traits_type>* __r = __tie_;
734 template <class _CharT, class _Traits>
735 inline _LIBCPP_INLINE_VISIBILITY
736 basic_streambuf<_CharT, _Traits>*
737 basic_ios<_CharT, _Traits>::rdbuf() const
739 return static_cast<basic_streambuf<char_type, traits_type>*>(ios_base::rdbuf());
742 template <class _CharT, class _Traits>
743 inline _LIBCPP_INLINE_VISIBILITY
744 basic_streambuf<_CharT, _Traits>*
745 basic_ios<_CharT, _Traits>::rdbuf(basic_streambuf<char_type, traits_type>* __sb)
747 basic_streambuf<char_type, traits_type>* __r = rdbuf();
748 ios_base::rdbuf(__sb);
752 template <class _CharT, class _Traits>
753 inline _LIBCPP_INLINE_VISIBILITY
755 basic_ios<_CharT, _Traits>::imbue(const locale& __loc)
757 locale __r = getloc();
758 ios_base::imbue(__loc);
760 rdbuf()->pubimbue(__loc);
764 template <class _CharT, class _Traits>
765 inline _LIBCPP_INLINE_VISIBILITY
767 basic_ios<_CharT, _Traits>::narrow(char_type __c, char __dfault) const
769 return use_facet<ctype<char_type> >(getloc()).narrow(__c, __dfault);
772 template <class _CharT, class _Traits>
773 inline _LIBCPP_INLINE_VISIBILITY
775 basic_ios<_CharT, _Traits>::widen(char __c) const
777 return use_facet<ctype<char_type> >(getloc()).widen(__c);
780 template <class _CharT, class _Traits>
781 inline _LIBCPP_INLINE_VISIBILITY
783 basic_ios<_CharT, _Traits>::fill() const
785 if (traits_type::eq_int_type(traits_type::eof(), __fill_))
786 __fill_ = widen(' ');
790 template <class _CharT, class _Traits>
791 inline _LIBCPP_INLINE_VISIBILITY
793 basic_ios<_CharT, _Traits>::fill(char_type __ch)
795 char_type __r = __fill_;
800 template <class _CharT, class _Traits>
801 basic_ios<_CharT, _Traits>&
802 basic_ios<_CharT, _Traits>::copyfmt(const basic_ios& __rhs)
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());
816 template <class _CharT, class _Traits>
817 inline _LIBCPP_INLINE_VISIBILITY
819 basic_ios<_CharT, _Traits>::move(basic_ios& __rhs)
821 ios_base::move(__rhs);
822 __tie_ = __rhs.__tie_;
824 __fill_ = __rhs.__fill_;
827 template <class _CharT, class _Traits>
828 inline _LIBCPP_INLINE_VISIBILITY
830 basic_ios<_CharT, _Traits>::swap(basic_ios& __rhs) _NOEXCEPT
832 ios_base::swap(__rhs);
833 _VSTD::swap(__tie_, __rhs.__tie_);
834 _VSTD::swap(__fill_, __rhs.__fill_);
837 template <class _CharT, class _Traits>
838 inline _LIBCPP_INLINE_VISIBILITY
840 basic_ios<_CharT, _Traits>::set_rdbuf(basic_streambuf<char_type, traits_type>* __sb)
842 ios_base::set_rdbuf(__sb);
845 inline _LIBCPP_INLINE_VISIBILITY
847 boolalpha(ios_base& __str)
849 __str.setf(ios_base::boolalpha);
853 inline _LIBCPP_INLINE_VISIBILITY
855 noboolalpha(ios_base& __str)
857 __str.unsetf(ios_base::boolalpha);
861 inline _LIBCPP_INLINE_VISIBILITY
863 showbase(ios_base& __str)
865 __str.setf(ios_base::showbase);
869 inline _LIBCPP_INLINE_VISIBILITY
871 noshowbase(ios_base& __str)
873 __str.unsetf(ios_base::showbase);
877 inline _LIBCPP_INLINE_VISIBILITY
879 showpoint(ios_base& __str)
881 __str.setf(ios_base::showpoint);
885 inline _LIBCPP_INLINE_VISIBILITY
887 noshowpoint(ios_base& __str)
889 __str.unsetf(ios_base::showpoint);
893 inline _LIBCPP_INLINE_VISIBILITY
895 showpos(ios_base& __str)
897 __str.setf(ios_base::showpos);
901 inline _LIBCPP_INLINE_VISIBILITY
903 noshowpos(ios_base& __str)
905 __str.unsetf(ios_base::showpos);
909 inline _LIBCPP_INLINE_VISIBILITY
911 skipws(ios_base& __str)
913 __str.setf(ios_base::skipws);
917 inline _LIBCPP_INLINE_VISIBILITY
919 noskipws(ios_base& __str)
921 __str.unsetf(ios_base::skipws);
925 inline _LIBCPP_INLINE_VISIBILITY
927 uppercase(ios_base& __str)
929 __str.setf(ios_base::uppercase);
933 inline _LIBCPP_INLINE_VISIBILITY
935 nouppercase(ios_base& __str)
937 __str.unsetf(ios_base::uppercase);
941 inline _LIBCPP_INLINE_VISIBILITY
943 unitbuf(ios_base& __str)
945 __str.setf(ios_base::unitbuf);
949 inline _LIBCPP_INLINE_VISIBILITY
951 nounitbuf(ios_base& __str)
953 __str.unsetf(ios_base::unitbuf);
957 inline _LIBCPP_INLINE_VISIBILITY
959 internal(ios_base& __str)
961 __str.setf(ios_base::internal, ios_base::adjustfield);
965 inline _LIBCPP_INLINE_VISIBILITY
967 left(ios_base& __str)
969 __str.setf(ios_base::left, ios_base::adjustfield);
973 inline _LIBCPP_INLINE_VISIBILITY
975 right(ios_base& __str)
977 __str.setf(ios_base::right, ios_base::adjustfield);
981 inline _LIBCPP_INLINE_VISIBILITY
985 __str.setf(ios_base::dec, ios_base::basefield);
989 inline _LIBCPP_INLINE_VISIBILITY
993 __str.setf(ios_base::hex, ios_base::basefield);
997 inline _LIBCPP_INLINE_VISIBILITY
1001 __str.setf(ios_base::oct, ios_base::basefield);
1005 inline _LIBCPP_INLINE_VISIBILITY
1007 fixed(ios_base& __str)
1009 __str.setf(ios_base::fixed, ios_base::floatfield);
1013 inline _LIBCPP_INLINE_VISIBILITY
1015 scientific(ios_base& __str)
1017 __str.setf(ios_base::scientific, ios_base::floatfield);
1021 inline _LIBCPP_INLINE_VISIBILITY
1023 hexfloat(ios_base& __str)
1025 __str.setf(ios_base::fixed | ios_base::scientific, ios_base::floatfield);
1029 inline _LIBCPP_INLINE_VISIBILITY
1031 defaultfloat(ios_base& __str)
1033 __str.unsetf(ios_base::floatfield);
1037 template <class _CharT, class _Traits>
1040 typedef basic_ios<_CharT, _Traits> __stream_type;
1041 typedef typename __stream_type::fmtflags fmtflags;
1043 __stream_type& __stream_;
1044 fmtflags __fmtflags_;
1047 __save_flags(const __save_flags&);
1048 __save_flags& operator=(const __save_flags&);
1050 _LIBCPP_INLINE_VISIBILITY
1051 explicit __save_flags(__stream_type& __stream)
1052 : __stream_(__stream),
1053 __fmtflags_(__stream.flags()),
1054 __fill_(__stream.fill())
1056 _LIBCPP_INLINE_VISIBILITY
1059 __stream_.flags(__fmtflags_);
1060 __stream_.fill(__fill_);
1064 _LIBCPP_END_NAMESPACE_STD
1066 #endif // _LIBCPP_IOS