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 47struct const_iterator 48{ 49public: 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 60public: 61 inline 62 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 68 operator==(const const_iterator& other) const 69 { return m_p_p_cur == other.m_p_p_cur; } 70 71 inline bool 72 operator!=(const const_iterator& other) const 73 { return m_p_p_cur != other.m_p_p_cur; } 74 75 inline const_iterator& 76 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 85 operator++(int) 86 { 87 const_iterator ret_it(*this); 88 operator++(); 89 return ret_it; 90 } 91 92 const node_pointer_pointer 93 operator->() const 94 { 95 _GLIBCXX_DEBUG_ONLY(assert_referencible();) 96 return (m_p_p_cur); 97 } 98 99 const_node_pointer 100 operator*() const 101 { 102 _GLIBCXX_DEBUG_ONLY(assert_referencible();) 103 return (*m_p_p_cur); 104 } 105 106protected: 107#ifdef _GLIBCXX_DEBUG 108 void 109 assert_referencible() const 110 { _GLIBCXX_DEBUG_ASSERT(m_p_p_cur != m_p_p_end&& * m_p_p_cur != NULL); } 111#endif 112 113public: 114 node_pointer_pointer m_p_p_cur; 115 node_pointer_pointer m_p_p_end; 116}; 117 118