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 const_child_iterator.hpp 38 * Contains a const_iterator for a patricia tree. 39 */ 40 41 struct const_iterator 42 { 43 public: 44 typedef std::forward_iterator_tag iterator_category; 45 46 typedef typename Allocator::difference_type difference_type; 47 48 typedef node_pointer value_type; 49 50 typedef node_pointer_pointer pointer; 51 52 typedef node_pointer_reference reference; 53 54 public: 55 inline 56 const_iterator(node_pointer_pointer p_p_cur = 0, 57 node_pointer_pointer p_p_end = 0) 58 : m_p_p_cur(p_p_cur), m_p_p_end(p_p_end) 59 { } 60 61 inline bool 62 operator==(const const_iterator& other) const 63 { return m_p_p_cur == other.m_p_p_cur; } 64 65 inline bool 66 operator!=(const const_iterator& other) const 67 { return m_p_p_cur != other.m_p_p_cur; } 68 69 inline const_iterator& 70 operator++() 71 { 72 do 73 ++m_p_p_cur; 74 while (m_p_p_cur != m_p_p_end&& * m_p_p_cur == 0); 75 return *this; 76 } 77 78 inline const_iterator 79 operator++(int) 80 { 81 const_iterator ret_it(*this); 82 operator++(); 83 return ret_it; 84 } 85 86 const node_pointer_pointer 87 operator->() const 88 { 89 _GLIBCXX_DEBUG_ONLY(assert_referencible();) 90 return (m_p_p_cur); 91 } 92 93 const_node_pointer 94 operator*() const 95 { 96 _GLIBCXX_DEBUG_ONLY(assert_referencible();) 97 return (*m_p_p_cur); 98 } 99 100 protected: 101 #ifdef _GLIBCXX_DEBUG 102 void 103 assert_referencible() const 104 { _GLIBCXX_DEBUG_ASSERT(m_p_p_cur != m_p_p_end&& * m_p_p_cur != 0); } 105 #endif 106 107 public: 108 node_pointer_pointer m_p_p_cur; 109 node_pointer_pointer m_p_p_end; 110 }; 111 112
