| // -*- C++ -*- |
| |
| // Copyright (C) 2005, 2006, 2009, 2010 Free Software Foundation, Inc. |
| // |
| // This file is part of the GNU ISO C++ Library. This library is free |
| // software; you can redistribute it and/or modify it under the terms |
| // of the GNU General Public License as published by the Free Software |
| // Foundation; either version 3, or (at your option) any later |
| // version. |
| |
| // This library is distributed in the hope that it will be useful, but |
| // WITHOUT ANY WARRANTY; without even the implied warranty of |
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| // General Public License for more details. |
| |
| // Under Section 7 of GPL version 3, you are granted additional |
| // permissions described in the GCC Runtime Library Exception, version |
| // 3.1, as published by the Free Software Foundation. |
| |
| // You should have received a copy of the GNU General Public License and |
| // a copy of the GCC Runtime Library Exception along with this program; |
| // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
| // <http://www.gnu.org/licenses/>. |
| |
| // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL. |
| |
| // Permission to use, copy, modify, sell, and distribute this software |
| // is hereby granted without fee, provided that the above copyright |
| // notice appears in all copies, and that both that copyright notice |
| // and this permission notice appear in supporting documentation. None |
| // of the above authors, nor IBM Haifa Research Laboratories, make any |
| // representation about the suitability of this software for any |
| // purpose. It is provided "as is" without express or implied |
| // warranty. |
| |
| /** |
| * @file const_child_iterator.hpp |
| * Contains a const_iterator for a patricia tree. |
| */ |
| |
| struct const_iterator |
| { |
| public: |
| typedef std::forward_iterator_tag iterator_category; |
| |
| typedef typename Allocator::difference_type difference_type; |
| |
| typedef node_pointer value_type; |
| |
| typedef node_pointer_pointer pointer; |
| |
| typedef node_pointer_reference reference; |
| |
| public: |
| inline |
| const_iterator(node_pointer_pointer p_p_cur = 0, |
| node_pointer_pointer p_p_end = 0) |
| : m_p_p_cur(p_p_cur), m_p_p_end(p_p_end) |
| { } |
| |
| inline bool |
| operator==(const const_iterator& other) const |
| { return m_p_p_cur == other.m_p_p_cur; } |
| |
| inline bool |
| operator!=(const const_iterator& other) const |
| { return m_p_p_cur != other.m_p_p_cur; } |
| |
| inline const_iterator& |
| operator++() |
| { |
| do |
| ++m_p_p_cur; |
| while (m_p_p_cur != m_p_p_end&& * m_p_p_cur == 0); |
| return *this; |
| } |
| |
| inline const_iterator |
| operator++(int) |
| { |
| const_iterator ret_it(*this); |
| operator++(); |
| return ret_it; |
| } |
| |
| const node_pointer_pointer |
| operator->() const |
| { |
| _GLIBCXX_DEBUG_ONLY(assert_referencible();) |
| return (m_p_p_cur); |
| } |
| |
| const_node_pointer |
| operator*() const |
| { |
| _GLIBCXX_DEBUG_ONLY(assert_referencible();) |
| return (*m_p_p_cur); |
| } |
| |
| protected: |
| #ifdef _GLIBCXX_DEBUG |
| void |
| assert_referencible() const |
| { _GLIBCXX_DEBUG_ASSERT(m_p_p_cur != m_p_p_end&& * m_p_p_cur != 0); } |
| #endif |
| |
| public: |
| node_pointer_pointer m_p_p_cur; |
| node_pointer_pointer m_p_p_end; |
| }; |
| |