| /* |
| * |
| * 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 <stl/_iterator_base.h> |
| #endif |
| |
| // streambuf_iterators predeclarations must appear first |
| #ifndef _STLP_INTERNAL_IOSFWD |
| # include <stl/_iosfwd.h> |
| #endif |
| |
| #ifndef _STLP_INTERNAL_ALGOBASE_H |
| # include <stl/_algobase.h> |
| #endif |
| |
| #ifndef _STLP_INTERNAL_OSTREAMBUF_ITERATOR_H |
| # include <stl/_ostreambuf_iterator.h> |
| #endif |
| |
| #ifndef _STLP_INTERNAL_ISTREAMBUF_ITERATOR_H |
| # include <stl/_istreambuf_iterator.h> |
| #endif |
| |
| #ifndef _STLP_INTERNAL_ISTREAM |
| # include <stl/_istream.h> |
| #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 _Tp, |
| class _CharT = char, class _Traits = char_traits<_CharT>, |
| class _Dist = ptrdiff_t> |
| class istream_iterator : public iterator<input_iterator_tag, _Tp , _Dist, |
| const _Tp*, const _Tp& > { |
| #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 _Tp> |
| class istream_iterator : public iterator<input_iterator_tag, _Tp , ptrdiff_t, |
| const _Tp*, const _Tp& > { |
| # else |
| # define __ISI_TMPL_HEADER_ARGUMENTS class _Tp, class _Dist |
| # define __ISI_TMPL_ARGUMENTS _Tp, _Dist |
| template <class _Tp, _STLP_DFL_TYPE_PARAM(_Dist, ptrdiff_t)> |
| class istream_iterator : public iterator<input_iterator_tag, _Tp, _Dist , |
| const _Tp*, const _Tp& > { |
| # endif /* _STLP_MINIMUM_DEFAULT_TEMPLATE_PARAMS */ |
| #endif /* _STLP_LIMITED_DEFAULT_TEMPLATES */ |
| |
| #if defined (_STLP_LIMITED_DEFAULT_TEMPLATES) |
| typedef char _CharT; |
| typedef char_traits<char> _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 { |
| _STLP_MUTABLE(_Self, _M_ok) = ((_M_stream != 0) && !_M_stream->fail()); |
| if (_M_ok) { |
| *_M_stream >> _STLP_MUTABLE(_Self, _M_value); |
| _STLP_MUTABLE(_Self, _M_ok) = !_M_stream->fail(); |
| } |
| _STLP_MUTABLE(_Self, _M_read_done) = true; |
| } |
| }; |
| |
| #if !defined (_STLP_LIMITED_DEFAULT_TEMPLATES) |
| template <class _TpP, |
| class _CharT = char, class _Traits = char_traits<_CharT> > |
| #else |
| template <class _TpP> |
| #endif |
| class ostream_iterator: public iterator<output_iterator_tag, void, void, void, void> { |
| #if defined (_STLP_LIMITED_DEFAULT_TEMPLATES) |
| typedef char _CharT; |
| typedef char_traits<char> _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 <class _TpP> |
| inline output_iterator_tag _STLP_CALL |
| iterator_category(const ostream_iterator<_TpP>&) { return output_iterator_tag(); } |
| # else |
| template <class _TpP, class _CharT, class _Traits> |
| 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: |