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      1 // -*- C++ -*-
      2 
      3 // Copyright (C) 2005, 2006, 2009, 2010 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 3, 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 // Under Section 7 of GPL version 3, you are granted additional
     17 // permissions described in the GCC Runtime Library Exception, version
     18 // 3.1, as published by the Free Software Foundation.
     19 
     20 // You should have received a copy of the GNU General Public License and
     21 // a copy of the GCC Runtime Library Exception along with this program;
     22 // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
     23 // <http://www.gnu.org/licenses/>.
     24 
     25 // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
     26 
     27 // Permission to use, copy, modify, sell, and distribute this software
     28 // is hereby granted without fee, provided that the above copyright
     29 // notice appears in all copies, and that both that copyright notice
     30 // and this permission notice appear in supporting documentation. None
     31 // of the above authors, nor IBM Haifa Research Laboratories, make any
     32 // representation about the suitability of this software for any
     33 // purpose. It is provided "as is" without express or implied
     34 // warranty.
     35 
     36 /**
     37  * @file unordered_iterator/point_const_iterator.hpp
     38  * Contains an iterator class returned by the tables' const find and insert
     39  *     methods.
     40  */
     41 
     42 class point_iterator_;
     43 
     44 /// Const point-type iterator.
     45 class point_const_iterator_
     46 {
     47 public:
     48   /// Category.
     49   typedef trivial_iterator_tag iterator_category;
     50 
     51   /// Difference type.
     52   typedef trivial_iterator_difference_type difference_type;
     53 
     54   /// Iterator's value type.
     55   typedef value_type_ value_type;
     56 
     57   /// Iterator's pointer type.
     58   typedef pointer_ pointer;
     59 
     60   /// Iterator's const pointer type.
     61   typedef const_pointer_ const_pointer;
     62 
     63   /// Iterator's reference type.
     64   typedef reference_ reference;
     65 
     66   /// Iterator's const reference type.
     67   typedef const_reference_ const_reference;
     68 
     69   inline
     70   point_const_iterator_(const_pointer p_value) : m_p_value(p_value)
     71   { }
     72 
     73   /// Default constructor.
     74   inline
     75   point_const_iterator_() : m_p_value(0)
     76   { }
     77 
     78   /// Copy constructor.
     79   inline
     80   point_const_iterator_(const point_const_iterator_& other)
     81   : m_p_value(other.m_p_value)
     82   { }
     83 
     84   /// Copy constructor.
     85   inline
     86   point_const_iterator_(const point_iterator_& other)
     87   : m_p_value(other.m_p_value)
     88   { }
     89 
     90   /// Access.
     91   const_pointer
     92   operator->() const
     93   {
     94     _GLIBCXX_DEBUG_ASSERT(m_p_value != 0);
     95     return m_p_value;
     96   }
     97 
     98   /// Access.
     99   const_reference
    100   operator*() const
    101   {
    102     _GLIBCXX_DEBUG_ASSERT(m_p_value != 0);
    103     return *m_p_value;
    104   }
    105 
    106   /// Compares content to a different iterator object.
    107   bool
    108   operator==(const point_iterator_& other) const
    109   { return m_p_value == other.m_p_value; }
    110 
    111   /// Compares content to a different iterator object.
    112   bool
    113   operator==(const point_const_iterator_& other) const
    114   { return m_p_value == other.m_p_value; }
    115 
    116   /// Compares content (negatively) to a different iterator object.
    117   bool
    118   operator!=(const point_iterator_& other) const
    119   { return m_p_value != other.m_p_value; }
    120 
    121   /// Compares content (negatively) to a different iterator object.
    122   bool
    123   operator!=(const point_const_iterator_& other) const
    124   { return m_p_value != other.m_p_value; }
    125 
    126 protected:
    127   const_pointer m_p_value;
    128 
    129   friend class point_iterator_;
    130 
    131   friend class PB_DS_CLASS_C_DEC;
    132 };
    133 
    134