/home/ntakagi/work/STLport-5.1.5/stlport/stl/_ios.h Go to the documentation of this file. /* * Copyright (c) 1999 * Silicon Graphics Computer Systems, Inc. * * Copyright (c) 1999 * Boris Fomitchev * * This material is provided "as is", with absolutely no warranty expressed * or implied. Any use is at your own risk. * * Permission to use or copy this software for any purpose is hereby granted * without fee, provided the above notices are retained on all copies. * Permission to modify the code and to distribute modified code is granted, * provided the above notices are retained, and a notice that the code was * modified is included with the above copyright notice. * */ #ifndef _STLP_INTERNAL_IOS_H #define _STLP_INTERNAL_IOS_H #ifndef _STLP_IOS_BASE_H # include <stl/_ios_base.h> #endif #ifndef _STLP_INTERNAL_CTYPE_H # include <stl/_ctype.h> #endif #ifndef _STLP_INTERNAL_NUMPUNCT_H # include <stl/_numpunct.h> #endif _STLP_BEGIN_NAMESPACE // ---------------------------------------------------------------------- // Class basic_ios, a subclass of ios_base. The only important difference // between the two is that basic_ios is a class template, parameterized // by the character type. ios_base exists to factor out all of the // common properties that don't depend on the character type. // The second template parameter, _Traits, defaults to char_traits<_CharT>. // The default is declared in header <iosfwd>, and it isn't declared here // because C++ language rules do not allow it to be declared twice. template <class _CharT, class _Traits> class basic_ios : public ios_base { friend class ios_base; public: // Synonyms for types. typedef _CharT char_type; typedef typename _Traits::int_type int_type; typedef typename _Traits::pos_type pos_type; typedef typename _Traits::off_type off_type; typedef _Traits traits_type; public: // Constructor, destructor. explicit basic_ios(basic_streambuf<_CharT, _Traits>* __streambuf); virtual ~basic_ios() {} public: // Members from clause 27.4.4.2 basic_ostream<_CharT, _Traits>* tie() const { return _M_tied_ostream; } basic_ostream<_CharT, _Traits>* tie(basic_ostream<char_type, traits_type>* __new_tied_ostream) { basic_ostream<char_type, traits_type>* __tmp = _M_tied_ostream; _M_tied_ostream = __new_tied_ostream; return __tmp; } basic_streambuf<_CharT, _Traits>* rdbuf() const { return _M_streambuf; } basic_streambuf<_CharT, _Traits>* rdbuf(basic_streambuf<char_type, traits_type>*); // Copies __x's state to *this. basic_ios<_CharT, _Traits>& copyfmt(const basic_ios<_CharT, _Traits>& __x); char_type fill() const { return _M_fill; } char_type fill(char_type __fill) { char_type __tmp(_M_fill); _M_fill = __fill; return __tmp; } public: // Members from 27.4.4.3. These four functions // can almost be defined in ios_base. void clear(iostate __state = goodbit) { _M_clear_nothrow(this->rdbuf() ? __state : iostate(__state|ios_base::badbit)); _M_check_exception_mask(); } void setstate(iostate __state) { this->clear(rdstate() | __state); } iostate exceptions() const { return this->_M_get_exception_mask(); } void exceptions(iostate __mask) { this->_M_set_exception_mask(__mask); this->clear(this->rdstate()); } public: // Locale-related member functions. locale imbue(const locale&); inline char narrow(_CharT, char) const ; inline _CharT widen(char) const; // Helper function that makes testing for EOF more convenient. static bool _STLP_CALL _S_eof(int_type __c) { const int_type __eof = _Traits::eof(); return _Traits::eq_int_type(__c, __eof); } protected: basic_ios(); void init(basic_streambuf<_CharT, _Traits>* __streambuf); public: // Helper function used in istream and ostream. It is called only from // a catch clause. void _M_handle_exception(ios_base::iostate __flag); private: // Data members char_type _M_fill; // The fill character, used for padding. basic_streambuf<_CharT, _Traits>* _M_streambuf; basic_ostream<_CharT, _Traits>* _M_tied_ostream; }; template <class _CharT, class _Traits> inline char basic_ios<_CharT, _Traits>::narrow(_CharT __c, char __default) const { return __STATIC_CAST(const ctype<_CharT>*, this->_M_ctype_facet())->narrow(__c, __default); } template <class _CharT, class _Traits> inline _CharT basic_ios<_CharT, _Traits>::widen(char __c) const { return __STATIC_CAST(const ctype<_CharT>*, this->_M_ctype_facet())->widen(__c); } # if !defined (_STLP_NO_METHOD_SPECIALIZATION) _STLP_TEMPLATE_NULL inline char basic_ios<char, char_traits<char> >::narrow(char __c, char) const { return __c; } _STLP_TEMPLATE_NULL inline char basic_ios<char, char_traits<char> >::widen(char __c) const { return __c; } # endif /* _STLP_NO_METHOD_SPECIALIZATION */ # if defined (_STLP_USE_TEMPLATE_EXPORT) _STLP_EXPORT_TEMPLATE_CLASS basic_ios<char, char_traits<char> >; # if ! defined (_STLP_NO_WCHAR_T) _STLP_EXPORT_TEMPLATE_CLASS basic_ios<wchar_t, char_traits<wchar_t> >; # endif # endif /* _STLP_USE_TEMPLATE_EXPORT */ _STLP_END_NAMESPACE #if defined (_STLP_EXPOSE_STREAM_IMPLEMENTATION) && !defined (_STLP_LINK_TIME_INSTANTIATION) # include <stl/_ios.c> #endif #endif /* _STLP_IOS */ // Local Variables: // mode:C++ // End:

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