mingw/lib/gcc/mingw32/4.3.3/include/c++/ext/pb_ds/detail/pat_trie_/child_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 child_iterator.hpp
  44  * Contains a iterator for a patricia tree.
  45  */
  46
  47 struct iterator : public const_iterator
  48 {
  49 public:
  50   typedef std::forward_iterator_tag iterator_category;
  51   typedef typename Allocator::difference_type difference_type;
  52   typedef node_pointer value_type;
  53   typedef node_pointer_pointer pointer;
  54   typedef node_pointer_reference reference;
  55
  56   inline
  57   iterator(node_pointer_pointer p_p_cur = NULL,
  58            node_pointer_pointer p_p_end = NULL)
  59   : const_iterator(p_p_cur, p_p_end)
  60   { }
  61
  62   inline bool
  63   operator==(const iterator& other) const
  64   { return const_iterator::m_p_p_cur == other.m_p_p_cur; }
  65
  66   inline bool
  67   operator!=(const iterator& other) const
  68   { return const_iterator::m_p_p_cur != other.m_p_p_cur; }
  69
  70   inline iterator&
  71   operator++()
  72   {
  73     const_iterator::operator++();
  74     return *this;
  75   }
  76
  77   inline iterator
  78   operator++(int)
  79   {
  80     iterator ret_it(*this);
  81     operator++();
  82     return ret_it;
  83   }
  84
  85   node_pointer_pointer
  86   operator->()
  87   {
  88     _GLIBCXX_DEBUG_ONLY(const_iterator::assert_referencible();)
  89     return const_iterator::m_p_p_cur;
  90   }
  91
  92   node_pointer
  93   operator*()
  94   {
  95     _GLIBCXX_DEBUG_ONLY(const_iterator::assert_referencible();)
  96     return *const_iterator::m_p_p_cur;
  97   }
  98 };
  99