old-autovect-branch/libstdc++-v3/include/ext/pb_assoc/detail/unordered_iterator/iterator.hpp

   1 // -*- C++ -*-
   2
   3 // Copyright (C) 2005 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the
   7 // terms of the GNU General Public License as published by the
   8 // Free Software Foundation; either version 2, or (at your option)
   9 // any later version.
  10
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License along
  17 // with this library; see the file COPYING.  If not, write to the Free
  18 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  19 // USA.
  20
  21 // As a special exception, you may use this file as part of a free software
  22 // library without restriction.  Specifically, if other files instantiate
  23 // templates or use macros or inline functions from this file, or you compile
  24 // this file and link it with other files to produce an executable, this
  25 // file does not by itself cause the resulting executable to be covered by
  26 // the GNU General Public License.  This exception does not however
  27 // invalidate any other reasons why the executable file might be covered by
  28 // the GNU General Public License.
  29
  30 // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
  31
  32 // Permission to use, copy, modify, sell, and distribute this software
  33 // is hereby granted without fee, provided that the above copyright
  34 // notice appears in all copies, and that both that copyright notice and
  35 // this permission notice appear in supporting documentation. None of
  36 // the above authors, nor IBM Haifa Research Laboratories, make any
  37 // representation about the suitability of this software for any
  38 // purpose. It is provided "as is" without express or implied warranty.
  39
  40 /**
  41  * @file iterator.hpp
  42  * Contains an iterator_ class used for ranging over the elements of the
  43  *      table.
  44  */
  45
  46 class iterator_ :
  47   public const_iterator_
  48
  49 {
  50
  51 public:
  52
  53   typedef std::forward_iterator_tag iterator_category;
  54
  55   typedef typename Allocator::difference_type difference_type;
  56
  57   typedef mapped_value_type value_type;
  58
  59   typedef mapped_pointer pointer;
  60
  61   typedef const_mapped_pointer const_pointer;
  62
  63   typedef mapped_reference reference;
  64
  65   typedef const_mapped_reference const_reference;
  66
  67 public:
  68
  69   inline
  70   iterator_()
  71
  72     : const_iterator_(NULL, PB_ASSOC_GEN_POS(), NULL)
  73   { }
  74
  75   inline
  76   operator find_iterator_()
  77   {
  78     return (find_iterator_(
  79                            const_cast<pointer>(const_iterator_::m_p_value)));
  80   }
  81
  82   inline
  83   operator const find_iterator_() const
  84   {
  85     return (find_iterator_(
  86                            const_cast<pointer>(const_iterator_::m_p_value)));
  87   }
  88
  89   inline pointer
  90   operator->()
  91   {
  92     PB_ASSOC_DBG_ASSERT(my_base::m_p_value != NULL);
  93
  94     return (const_cast<pointer>(my_base::m_p_value));
  95   }
  96
  97   inline reference
  98   operator*()
  99   {
 100     PB_ASSOC_DBG_ASSERT(my_base::m_p_value != NULL);
 101
 102     return (*(operator->()));
 103   }
 104
 105   inline iterator_&
 106   operator++()
 107   {
 108     my_base::m_p_tbl->inc_it_state(my_base::m_p_value, my_base::m_pos);
 109
 110     return (*this);
 111   }
 112
 113   inline iterator_
 114   operator++(int)
 115   {
 116     iterator_ ret =* this;
 117
 118     my_base::m_p_tbl->inc_it_state(my_base::m_p_value, my_base::m_pos);
 119
 120     return (ret);
 121   }
 122
 123 protected:
 124   typedef const_iterator_ my_base;
 125
 126 protected:
 127
 128   /**
 129    * Constructor used by the table to initiate the generalized
 130    *   pointer and position (e.g., this is called from within a find()
 131    *   of a table.
 132    **/
 133   inline
 134   iterator_(pointer p_value, PB_ASSOC_GEN_POS pos, PB_ASSOC_CLASS_C_DEC* p_tbl) : const_iterator_(p_value, pos, p_tbl)
 135   { }
 136
 137   friend class PB_ASSOC_CLASS_C_DEC;
 138 };
 139