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_child_iterator.hpp 44 * Contains a const_iterator for a patricia tree. 45 */ 46 47 struct const_iterator 48 { 49 public: 50 typedef std::forward_iterator_tag iterator_category; 51 52 typedef typename Allocator::difference_type difference_type; 53 54 typedef node_pointer value_type; 55 56 typedef node_pointer_pointer pointer; 57 58 typedef node_pointer_reference reference; 59 60 public: 61 inline const_iteratorconst_iterator62 const_iterator(node_pointer_pointer p_p_cur = NULL, 63 node_pointer_pointer p_p_end = NULL) 64 : m_p_p_cur(p_p_cur), m_p_p_end(p_p_end) 65 { } 66 67 inline bool operator ==const_iterator68 operator==(const const_iterator& other) const 69 { return m_p_p_cur == other.m_p_p_cur; } 70 71 inline bool operator !=const_iterator72 operator!=(const const_iterator& other) const 73 { return m_p_p_cur != other.m_p_p_cur; } 74 75 inline const_iterator& operator ++const_iterator76 operator++() 77 { 78 do 79 ++m_p_p_cur; 80 while (m_p_p_cur != m_p_p_end&& * m_p_p_cur == NULL); 81 return *this; 82 } 83 84 inline const_iterator operator ++const_iterator85 operator++(int) 86 { 87 const_iterator ret_it(*this); 88 operator++(); 89 return ret_it; 90 } 91 92 const node_pointer_pointer operator ->const_iterator93 operator->() const 94 { 95 _GLIBCXX_DEBUG_ONLY(assert_referencible();) 96 return (m_p_p_cur); 97 } 98 99 const_node_pointer operator *const_iterator100 operator*() const 101 { 102 _GLIBCXX_DEBUG_ONLY(assert_referencible();) 103 return (*m_p_p_cur); 104 } 105 106 protected: 107 #ifdef _GLIBCXX_DEBUG 108 void assert_referencibleconst_iterator109 assert_referencible() const 110 { _GLIBCXX_DEBUG_ASSERT(m_p_p_cur != m_p_p_end&& * m_p_p_cur != NULL); } 111 #endif 112 113 public: 114 node_pointer_pointer m_p_p_cur; 115 node_pointer_pointer m_p_p_end; 116 }; 117 118