X-Git-Url: http://git.buserror.net/cgi-bin/gitweb.cgi?p=polintos%2Fscott%2Fpriv.git;a=blobdiff_plain;f=include%2Fc%2B%2B%2Fstl%2Fstl%2F_stream_iterator.h;fp=include%2Fc%2B%2B%2Fstl%2Fstl%2F_stream_iterator.h;h=1d1ff3f5a8523ba142e13847c2244f1adfa3ac6b;hp=0000000000000000000000000000000000000000;hb=173d8903eb9d51a4ea7d7fa3e52dc86c9bb6d4f1;hpb=b024710fe2b60cd4a42a8993b61333d6cdb56ca3 diff --git a/include/c++/stl/stl/_stream_iterator.h b/include/c++/stl/stl/_stream_iterator.h new file mode 100644 index 0000000..1d1ff3f --- /dev/null +++ b/include/c++/stl/stl/_stream_iterator.h @@ -0,0 +1,253 @@ +/* + * + * Copyright (c) 1994 + * Hewlett-Packard Company + * + * Copyright (c) 1996-1998 + * Silicon Graphics Computer Systems, Inc. + * + * Copyright (c) 1997 + * Moscow Center for SPARC Technology + * + * 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. + * + */ + +/* NOTE: This is an internal header file, included by other STL headers. + * You should not attempt to use it directly. + */ + +#if !defined (_STLP_INTERNAL_STREAM_ITERATOR_H) && !defined (_STLP_USE_NO_IOSTREAMS) +#define _STLP_INTERNAL_STREAM_ITERATOR_H + +#ifndef _STLP_INTERNAL_ITERATOR_BASE_H +# include +#endif + +// streambuf_iterators predeclarations must appear first +#ifndef _STLP_IOSFWD +# include +#endif + +#ifndef _STLP_INTERNAL_ALGOBASE_H +# include +#endif + +#ifndef _STLP_INTERNAL_OSTREAMBUF_ITERATOR_H +# include +#endif + +#ifndef _STLP_INTERNAL_ISTREAMBUF_ITERATOR_H +# include +#endif + +#ifndef _STLP_INTERNAL_ISTREAM +# include +#endif + +// istream_iterator and ostream_iterator look very different if we're +// using new, templatized iostreams than if we're using the old cfront +// version. + +_STLP_BEGIN_NAMESPACE + +#if !defined (_STLP_LIMITED_DEFAULT_TEMPLATES) +# define __ISI_TMPL_HEADER_ARGUMENTS class _Tp, class _CharT, class _Traits, class _Dist +# define __ISI_TMPL_ARGUMENTS _Tp, _CharT, _Traits, _Dist +template , + class _Dist = ptrdiff_t> +class istream_iterator : public iterator { +#else +# if defined (_STLP_MINIMUM_DEFAULT_TEMPLATE_PARAMS) && !defined (_STLP_DEFAULT_TYPE_PARAM) +# define __ISI_TMPL_HEADER_ARGUMENTS class _Tp +# define __ISI_TMPL_ARGUMENTS _Tp +template +class istream_iterator : public iterator { +# else +# define __ISI_TMPL_HEADER_ARGUMENTS class _Tp, class _Dist +# define __ISI_TMPL_ARGUMENTS _Tp, _Dist +template +class istream_iterator : public iterator { +# endif /* _STLP_MINIMUM_DEFAULT_TEMPLATE_PARAMS */ +#endif /* _STLP_LIMITED_DEFAULT_TEMPLATES */ + +#if defined (_STLP_LIMITED_DEFAULT_TEMPLATES) + typedef char _CharT; + typedef char_traits _Traits; +# if defined (_STLP_MINIMUM_DEFAULT_TEMPLATE_PARAMS) && !defined (_STLP_DEFAULT_TYPE_PARAM) + typedef ptrdiff_t _Dist; +# endif +#endif + + typedef istream_iterator< __ISI_TMPL_ARGUMENTS > _Self; +public: + typedef _CharT char_type; + typedef _Traits traits_type; + typedef basic_istream<_CharT, _Traits> istream_type; + + typedef input_iterator_tag iterator_category; + typedef _Tp value_type; + typedef _Dist difference_type; + typedef const _Tp* pointer; + typedef const _Tp& reference; + + istream_iterator() : _M_stream(0), _M_ok(false), _M_read_done(true) {} + istream_iterator(istream_type& __s) : _M_stream(&__s), _M_ok(false), _M_read_done(false) {} + + reference operator*() const { + if (!_M_read_done) { + _M_read(); + } + return _M_value; + } + + _STLP_DEFINE_ARROW_OPERATOR + + _Self& operator++() { + _M_read(); + return *this; + } + _Self operator++(int) { + _Self __tmp = *this; + _M_read(); + return __tmp; + } + + bool _M_equal(const _Self& __x) const { + if (!_M_read_done) { + _M_read(); + } + if (!__x._M_read_done) { + __x._M_read(); + } + return (_M_ok == __x._M_ok) && (!_M_ok || _M_stream == __x._M_stream); + } + +private: + istream_type* _M_stream; + mutable _Tp _M_value; + mutable bool _M_ok; + mutable bool _M_read_done; + + void _M_read() const { + _M_ok = ((_M_stream != 0) && !_M_stream->fail()); + if (_M_ok) { + *_M_stream >> _M_value; + _M_ok = !_M_stream->fail(); + } + _M_read_done = true; + } +}; + +#if !defined (_STLP_LIMITED_DEFAULT_TEMPLATES) +template > +#else +template +#endif +class ostream_iterator: public iterator { +#if defined (_STLP_LIMITED_DEFAULT_TEMPLATES) + typedef char _CharT; + typedef char_traits _Traits; + typedef ostream_iterator<_TpP> _Self; +#else + typedef ostream_iterator<_TpP, _CharT, _Traits> _Self; +#endif +public: + typedef _CharT char_type; + typedef _Traits traits_type; + typedef basic_ostream<_CharT, _Traits> ostream_type; + + typedef output_iterator_tag iterator_category; + + ostream_iterator(ostream_type& __s) : _M_stream(&__s), _M_string(0) {} + ostream_iterator(ostream_type& __s, const _CharT* __c) + : _M_stream(&__s), _M_string(__c) {} + _Self& operator=(const _TpP& __val) { + *_M_stream << __val; + if (_M_string) *_M_stream << _M_string; + return *this; + } + _Self& operator*() { return *this; } + _Self& operator++() { return *this; } + _Self& operator++(int) { return *this; } +private: + ostream_type* _M_stream; + const _CharT* _M_string; +}; + +#if defined (_STLP_USE_OLD_HP_ITERATOR_QUERIES) +# if defined (_STLP_LIMITED_DEFAULT_TEMPLATES) +template +inline output_iterator_tag _STLP_CALL +iterator_category(const ostream_iterator<_TpP>&) { return output_iterator_tag(); } +# else +template +inline output_iterator_tag _STLP_CALL +iterator_category(const ostream_iterator<_TpP, _CharT, _Traits>&) { return output_iterator_tag(); } +# endif +#endif + +_STLP_END_NAMESPACE + +// form-independent definiotion of stream iterators +_STLP_BEGIN_NAMESPACE + +template < __ISI_TMPL_HEADER_ARGUMENTS > +inline bool _STLP_CALL +operator==(const istream_iterator< __ISI_TMPL_ARGUMENTS >& __x, + const istream_iterator< __ISI_TMPL_ARGUMENTS >& __y) +{ return __x._M_equal(__y); } + +#if defined (_STLP_USE_SEPARATE_RELOPS_NAMESPACE) +template < __ISI_TMPL_HEADER_ARGUMENTS > +inline bool _STLP_CALL +operator!=(const istream_iterator< __ISI_TMPL_ARGUMENTS >& __x, + const istream_iterator< __ISI_TMPL_ARGUMENTS >& __y) +{ return !__x._M_equal(__y); } +#endif + +#if defined (_STLP_USE_OLD_HP_ITERATOR_QUERIES) +template < __ISI_TMPL_HEADER_ARGUMENTS > +inline input_iterator_tag _STLP_CALL +iterator_category(const istream_iterator< __ISI_TMPL_ARGUMENTS >&) +{ return input_iterator_tag(); } +template < __ISI_TMPL_HEADER_ARGUMENTS > +inline _Tp* _STLP_CALL +value_type(const istream_iterator< __ISI_TMPL_ARGUMENTS >&) { return (_Tp*) 0; } + +# if defined (_STLP_MINIMUM_DEFAULT_TEMPLATE_PARAMS) && !defined (_STLP_DEFAULT_TYPE_PARAM) +template < __ISI_TMPL_HEADER_ARGUMENTS > +inline ptrdiff_t* _STLP_CALL +distance_type(const istream_iterator< __ISI_TMPL_ARGUMENTS >&) { return (ptrdiff_t*)0; } +# else +template < __ISI_TMPL_HEADER_ARGUMENTS > +inline _Dist* _STLP_CALL +distance_type(const istream_iterator< __ISI_TMPL_ARGUMENTS >&) { return (_Dist*)0; } +# endif /* _STLP_MINIMUM_DEFAULT_TEMPLATE_PARAMS */ +#endif + +_STLP_END_NAMESPACE + +#undef __ISI_TMPL_HEADER_ARGUMENTS +#undef __ISI_TMPL_ARGUMENTS + +#endif /* _STLP_INTERNAL_STREAM_ITERATOR_H */ + +// Local Variables: +// mode:C++ +// End: