test: epoc32/include/stdapis/stlportv5/stl/_stream

     1 /*

     2  *

     3  * Copyright (c) 1994

     4  * Hewlett-Packard Company

     5  *

     6  * Copyright (c) 1996-1998

     7  * Silicon Graphics Computer Systems, Inc.

     8  *

     9  * Copyright (c) 1997

    10  * Moscow Center for SPARC Technology

    11  *

    12  * Copyright (c) 1999

    13  * Boris Fomitchev

    14  *

    15  * This material is provided "as is", with absolutely no warranty expressed

    16  * or implied. Any use is at your own risk.

    17  *

    18  * Permission to use or copy this software for any purpose is hereby granted

    19  * without fee, provided the above notices are retained on all copies.

    20  * Permission to modify the code and to distribute modified code is granted,

    21  * provided the above notices are retained, and a notice that the code was

    22  * modified is included with the above copyright notice.

    23  *

    24  */

    26 /* NOTE: This is an internal header file, included by other STL headers.

    27  *   You should not attempt to use it directly.

    28  */

    30 #if !defined (_STLP_INTERNAL_STREAM_ITERATOR_H) && !defined (_STLP_USE_NO_IOSTREAMS)

    31 #define _STLP_INTERNAL_STREAM_ITERATOR_H

    33 #ifndef _STLP_INTERNAL_ITERATOR_BASE_H

    34 #  include <stl/_iterator_base.h>

    35 #endif

    37 // streambuf_iterators predeclarations must appear first

    38 #ifndef _STLP_IOSFWD

    39 #  include <iosfwd>

    40 #endif

    42 #ifndef _STLP_INTERNAL_ALGOBASE_H

    43 #  include <stl/_algobase.h>

    44 #endif

    46 #ifndef _STLP_INTERNAL_OSTREAMBUF_ITERATOR_H

    47 #  include <stl/_ostreambuf_iterator.h>

    48 #endif

    50 #ifndef _STLP_INTERNAL_ISTREAMBUF_ITERATOR_H

    51 #  include <stl/_istreambuf_iterator.h>

    52 #endif

    54 #ifndef _STLP_INTERNAL_ISTREAM

    55 #  include <stl/_istream.h>

    56 #endif

    58 // istream_iterator and ostream_iterator look very different if we're

    59 // using new, templatized iostreams than if we're using the old cfront

    60 // version.

    62 _STLP_BEGIN_NAMESPACE

    64 #if !defined (_STLP_LIMITED_DEFAULT_TEMPLATES)

    65 #  define __ISI_TMPL_HEADER_ARGUMENTS class _Tp, class _CharT, class _Traits, class _Dist

    66 #  define __ISI_TMPL_ARGUMENTS _Tp, _CharT, _Traits, _Dist

    67 template <class _Tp,

    68           class _CharT = _STLP_DEFAULTCHAR, class _Traits = char_traits<_CharT>,

    69           class _Dist = ptrdiff_t>

    70 class istream_iterator : public iterator<input_iterator_tag, _Tp , _Dist,

    71                                          const _Tp*, const _Tp& > {

    72 #else

    73 #  if defined (_STLP_MINIMUM_DEFAULT_TEMPLATE_PARAMS) && !defined (_STLP_DEFAULT_TYPE_PARAM)

    74 #    define __ISI_TMPL_HEADER_ARGUMENTS class _Tp

    75 #    define __ISI_TMPL_ARGUMENTS        _Tp

    76 template <class _Tp>

    77 class istream_iterator : public iterator<input_iterator_tag, _Tp , ptrdiff_t,

    78                                          const _Tp*, const _Tp& > {

    79 #  else

    80 #    define __ISI_TMPL_HEADER_ARGUMENTS class _Tp, class _Dist

    81 #    define __ISI_TMPL_ARGUMENTS        _Tp, _Dist

    82 template <class _Tp, _STLP_DFL_TYPE_PARAM(_Dist, ptrdiff_t)>

    83 class istream_iterator : public iterator<input_iterator_tag, _Tp, _Dist ,

    84                                          const _Tp*, const _Tp& > {

    85 #  endif /* _STLP_MINIMUM_DEFAULT_TEMPLATE_PARAMS */

    86 #endif /* _STLP_LIMITED_DEFAULT_TEMPLATES */

    88 #if defined (_STLP_LIMITED_DEFAULT_TEMPLATES)

    89   typedef char _CharT;

    90   typedef char_traits<char> _Traits;

    91 #  if defined (_STLP_MINIMUM_DEFAULT_TEMPLATE_PARAMS) && !defined (_STLP_DEFAULT_TYPE_PARAM)

    92   typedef ptrdiff_t _Dist;

    93 #  endif

    94 #endif

    96   typedef istream_iterator< __ISI_TMPL_ARGUMENTS > _Self;

    97 public:

    98   typedef _CharT                         char_type;

    99   typedef _Traits                        traits_type;

   100   typedef basic_istream<_CharT, _Traits> istream_type;

   102   typedef input_iterator_tag             iterator_category;

   103   typedef _Tp                            value_type;

   104   typedef _Dist                          difference_type;

   105   typedef const _Tp*                     pointer;

   106   typedef const _Tp&                     reference;

   108   istream_iterator() : _M_stream(0), _M_ok(false), _M_read_done(true) {}

   109   istream_iterator(istream_type& __s) : _M_stream(&__s), _M_ok(false), _M_read_done(false) {}

   111   reference operator*() const {

   112     if (!_M_read_done) {

   113       _M_read();

   114     }

   115     return _M_value;

   116   }

   118   _STLP_DEFINE_ARROW_OPERATOR

   120   _Self& operator++() {

   121     _M_read();

   122     return *this;

   123   }

   124   _Self operator++(int)  {

   125     _Self __tmp = *this;

   126     _M_read();

   127     return __tmp;

   128   }

   130   bool _M_equal(const _Self& __x) const {

   131     if (!_M_read_done) {

   132       _M_read();

   133     }

   134     if (!__x._M_read_done) {

   135       __x._M_read();

   136     }

   137     return (_M_ok == __x._M_ok) && (!_M_ok || _M_stream == __x._M_stream);

   138   }

   140 private:

   141   istream_type* _M_stream;

   142   mutable _Tp _M_value;

   143   mutable bool _M_ok;

   144   mutable bool _M_read_done;

   146   void _M_read() const {

   147     _M_ok = ((_M_stream != 0) && !_M_stream->fail());

   148     if (_M_ok) {

   149       *_M_stream >> _M_value;

   150       _M_ok = !_M_stream->fail();

   151     }

   152     _M_read_done = true;

   153   }

   154 };

   156 #if !defined (_STLP_LIMITED_DEFAULT_TEMPLATES)

   157 template <class _TpP,

   158           class _CharT = _STLP_DEFAULTCHAR, class _Traits = char_traits<_CharT> >

   159 #else

   160 template <class _TpP>

   161 #endif

   162 class ostream_iterator: public iterator<output_iterator_tag, void, void, void, void> {

   163 #if defined (_STLP_LIMITED_DEFAULT_TEMPLATES)

   164   typedef char _CharT;

   165   typedef char_traits<char> _Traits;

   166   typedef ostream_iterator<_TpP> _Self;

   167 #else

   168   typedef ostream_iterator<_TpP, _CharT, _Traits> _Self;

   169 #endif

   170 public:

   171   typedef _CharT                         char_type;

   172   typedef _Traits                        traits_type;

   173   typedef basic_ostream<_CharT, _Traits> ostream_type;

   175   typedef output_iterator_tag            iterator_category;

   177   ostream_iterator(ostream_type& __s) : _M_stream(&__s), _M_string(0) {}

   178   ostream_iterator(ostream_type& __s, const _CharT* __c)

   179     : _M_stream(&__s), _M_string(__c)  {}

   180   _Self& operator=(const _TpP& __val) {

   181     *_M_stream << __val;

   182     if (_M_string) *_M_stream << _M_string;

   183     return *this;

   184   }

   185   _Self& operator*() { return *this; }

   186   _Self& operator++() { return *this; }

   187   _Self& operator++(int) { return *this; }

   188 private:

   189   ostream_type* _M_stream;

   190   const _CharT* _M_string;

   191 };

   193 #if defined (_STLP_USE_OLD_HP_ITERATOR_QUERIES)

   194 #  if defined (_STLP_LIMITED_DEFAULT_TEMPLATES)

   195 template <class _TpP>

   196 inline output_iterator_tag _STLP_CALL

   197 iterator_category(const ostream_iterator<_TpP>&) { return output_iterator_tag(); }

   198 #  else

   199 template <class _TpP, class _CharT, class _Traits>

   200 inline output_iterator_tag _STLP_CALL

   201 iterator_category(const ostream_iterator<_TpP, _CharT, _Traits>&) { return output_iterator_tag(); }

   202 #  endif

   203 #endif

   205 _STLP_END_NAMESPACE

   207 // form-independent definiotion of stream iterators

   208 _STLP_BEGIN_NAMESPACE

   210 template < __ISI_TMPL_HEADER_ARGUMENTS >

   211 inline bool _STLP_CALL

   212 operator==(const istream_iterator< __ISI_TMPL_ARGUMENTS >& __x,

   213            const istream_iterator< __ISI_TMPL_ARGUMENTS >& __y)

   214 { return __x._M_equal(__y); }

   216 #if defined (_STLP_USE_SEPARATE_RELOPS_NAMESPACE)

   217 template < __ISI_TMPL_HEADER_ARGUMENTS >

   218 inline bool _STLP_CALL

   219 operator!=(const istream_iterator< __ISI_TMPL_ARGUMENTS >& __x,

   220            const istream_iterator< __ISI_TMPL_ARGUMENTS >& __y)

   221 { return !__x._M_equal(__y); }

   222 #endif

   224 #if defined (_STLP_USE_OLD_HP_ITERATOR_QUERIES)

   225 template < __ISI_TMPL_HEADER_ARGUMENTS >

   226 inline input_iterator_tag _STLP_CALL

   227 iterator_category(const istream_iterator< __ISI_TMPL_ARGUMENTS >&)

   228 { return input_iterator_tag(); }

   229 template < __ISI_TMPL_HEADER_ARGUMENTS >

   230 inline _Tp* _STLP_CALL

   231 value_type(const istream_iterator< __ISI_TMPL_ARGUMENTS >&) { return (_Tp*) 0; }

   233 #  if defined (_STLP_MINIMUM_DEFAULT_TEMPLATE_PARAMS) && !defined (_STLP_DEFAULT_TYPE_PARAM)

   234 template < __ISI_TMPL_HEADER_ARGUMENTS >

   235 inline ptrdiff_t* _STLP_CALL

   236 distance_type(const istream_iterator< __ISI_TMPL_ARGUMENTS >&) { return (ptrdiff_t*)0; }

   237 #  else

   238 template < __ISI_TMPL_HEADER_ARGUMENTS >

   239 inline _Dist* _STLP_CALL

   240 distance_type(const istream_iterator< __ISI_TMPL_ARGUMENTS >&) { return (_Dist*)0; }

   241 #  endif /* _STLP_MINIMUM_DEFAULT_TEMPLATE_PARAMS */

   242 #endif

   244 _STLP_END_NAMESPACE

   246 #undef __ISI_TMPL_HEADER_ARGUMENTS

   247 #undef __ISI_TMPL_ARGUMENTS

   249 #endif /* _STLP_INTERNAL_STREAM_ITERATOR_H */

   251 // Local Variables:

   252 // mode:C++

   253 // End:

author	William Roberts <williamr@symbian.org>
	Wed, 31 Mar 2010 12:33:34 +0100
branch	Symbian3
changeset 4	837f303aceeb
parent 3	e1b950c65cb4
permissions	-rw-r--r--