mingw/lib/gcc/mingw32/4.3.3/include/c++/ext/pb_ds/detail/unordered_iterator/const_point_iterator.hpp

   1 // -*- C++ -*-
   2
   3 // Copyright (C) 2005, 2006 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 terms
   7 // of the GNU General Public License as published by the Free Software
   8 // Foundation; either version 2, or (at your option) any later
   9 // version.
  10
  11 // This library is distributed in the hope that it will be useful, but
  12 // WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 // General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License
  17 // along with this library; see the file COPYING.  If not, write to
  18 // the Free Software Foundation, 59 Temple Place - Suite 330, Boston,
  19 // MA 02111-1307, USA.
  20
  21 // As a special exception, you may use this file as part of a free
  22 // software library without restriction.  Specifically, if other files
  23 // instantiate templates or use macros or inline functions from this
  24 // file, or you compile this file and link it with other files to
  25 // produce an executable, this file does not by itself cause the
  26 // resulting executable to be covered by the GNU General Public
  27 // License.  This exception does not however invalidate any other
  28 // reasons why the executable file might be covered by the GNU General
  29 // Public License.
  30
  31 // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
  32
  33 // Permission to use, copy, modify, sell, and distribute this software
  34 // is hereby granted without fee, provided that the above copyright
  35 // notice appears in all copies, and that both that copyright notice
  36 // and this permission notice appear in supporting documentation. None
  37 // of the above authors, nor IBM Haifa Research Laboratories, make any
  38 // representation about the suitability of this software for any
  39 // purpose. It is provided "as is" without express or implied
  40 // warranty.
  41
  42 /**
  43  * @file const_point_iterator.hpp
  44  * Contains an iterator class returned by the tables' const find and insert
  45  *     methods.
  46  */
  47
  48 class point_iterator_;
  49
  50 // Const point-type iterator.
  51 class const_point_iterator_
  52 {
  53
  54 public:
  55
  56   // Category.
  57   typedef trivial_iterator_tag iterator_category;
  58
  59   // Difference type.
  60   typedef trivial_iterator_difference_type difference_type;
  61
  62   // Iterator's value type.
  63   typedef value_type_ value_type;
  64
  65   // Iterator's pointer type.
  66   typedef pointer_ pointer;
  67
  68   // Iterator's const pointer type.
  69   typedef const_pointer_ const_pointer;
  70
  71   // Iterator's reference type.
  72   typedef reference_ reference;
  73
  74   // Iterator's const reference type.
  75   typedef const_reference_ const_reference;
  76
  77 public:
  78
  79   inline
  80   const_point_iterator_(const_pointer p_value) : m_p_value(p_value)
  81   { }
  82
  83   // Default constructor.
  84   inline
  85   const_point_iterator_()
  86
  87     : m_p_value(NULL)
  88   { }
  89
  90   // Copy constructor.
  91   inline
  92   const_point_iterator_(const const_point_iterator_& other)
  93
  94     : m_p_value(other.m_p_value)
  95   { }
  96
  97   // Copy constructor.
  98   inline
  99   const_point_iterator_(const point_iterator_& other)
 100
 101     : m_p_value(other.m_p_value)
 102   { }
 103
 104   // Access.
 105   inline const_pointer
 106   operator->() const
 107   {
 108     _GLIBCXX_DEBUG_ASSERT(m_p_value != NULL);
 109
 110     return (m_p_value);
 111   }
 112
 113   // Access.
 114   inline const_reference
 115   operator*() const
 116   {
 117     _GLIBCXX_DEBUG_ASSERT(m_p_value != NULL);
 118
 119     return (*m_p_value);
 120   }
 121
 122   // Compares content to a different iterator object.
 123   inline bool
 124   operator==(const point_iterator_& other) const
 125   {
 126     return (m_p_value == other.m_p_value);
 127   }
 128
 129   // Compares content to a different iterator object.
 130   inline bool
 131   operator==(const const_point_iterator_& other) const
 132   {
 133     return (m_p_value == other.m_p_value);
 134   }
 135
 136   // Compares content (negatively) to a different iterator object.
 137   inline bool
 138   operator!=(const point_iterator_& other) const
 139   {
 140     return (m_p_value != other.m_p_value);
 141   }
 142
 143   // Compares content (negatively) to a different iterator object.
 144   inline bool
 145   operator!=(const const_point_iterator_& other) const
 146   {
 147     return (m_p_value != other.m_p_value);
 148   }
 149
 150 protected:
 151   const_pointer m_p_value;
 152
 153   friend class point_iterator_;
 154
 155   friend class PB_DS_CLASS_C_DEC;
 156 };
 157