| // -*- 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 node_iterators.hpp |
| * Contains an implementation class for bin_search_tree_. |
| */ |
| |
| #ifndef PB_DS_BIN_SEARCH_TREE_NODE_ITERATORS_HPP |
| #define PB_DS_BIN_SEARCH_TREE_NODE_ITERATORS_HPP |
| |
| #include <ext/pb_ds/tag_and_trait.hpp> |
| |
| namespace __gnu_pbds |
| { |
| namespace detail |
| { |
| |
| #define PB_DS_TREE_CONST_NODE_ITERATOR_CLASS_C_DEC \ |
| bin_search_tree_const_node_it_< \ |
| Node, \ |
| Const_Iterator, \ |
| Iterator, \ |
| Allocator> |
| |
| // Const node iterator. |
| template<typename Node, |
| class Const_Iterator, |
| class Iterator, |
| class Allocator> |
| class bin_search_tree_const_node_it_ |
| { |
| private: |
| |
| private: |
| typedef |
| typename Allocator::template rebind< |
| Node>::other::pointer |
| node_pointer; |
| |
| public: |
| |
| // Category. |
| typedef trivial_iterator_tag iterator_category; |
| |
| // Difference type. |
| typedef trivial_iterator_difference_type difference_type; |
| |
| // __Iterator's value type. |
| typedef Const_Iterator value_type; |
| |
| // __Iterator's reference type. |
| typedef Const_Iterator reference; |
| |
| // __Iterator's __const reference type. |
| typedef Const_Iterator const_reference; |
| |
| // Metadata type. |
| typedef typename Node::metadata_type metadata_type; |
| |
| // Const metadata reference type. |
| typedef |
| typename Allocator::template rebind< |
| metadata_type>::other::const_reference |
| const_metadata_reference; |
| |
| public: |
| |
| // Default constructor. |
| /* |
| inline |
| bin_search_tree_const_node_it_() |
| */ |
| |
| inline |
| bin_search_tree_const_node_it_(const node_pointer p_nd = 0) : m_p_nd(const_cast<node_pointer>(p_nd)) |
| { } |
| |
| // Access. |
| inline const_reference |
| operator*() const |
| { |
| return (Const_Iterator(m_p_nd)); |
| } |
| |
| // Metadata access. |
| inline const_metadata_reference |
| get_metadata() const |
| { |
| return (m_p_nd->get_metadata()); |
| } |
| |
| // Returns the __const node iterator associated with the left node. |
| inline PB_DS_TREE_CONST_NODE_ITERATOR_CLASS_C_DEC |
| get_l_child() const |
| { |
| return (PB_DS_TREE_CONST_NODE_ITERATOR_CLASS_C_DEC(m_p_nd->m_p_left)); |
| } |
| |
| // Returns the __const node iterator associated with the right node. |
| inline PB_DS_TREE_CONST_NODE_ITERATOR_CLASS_C_DEC |
| get_r_child() const |
| { |
| return (PB_DS_TREE_CONST_NODE_ITERATOR_CLASS_C_DEC(m_p_nd->m_p_right)); |
| } |
| |
| // Compares to a different iterator object. |
| inline bool |
| operator==(const PB_DS_TREE_CONST_NODE_ITERATOR_CLASS_C_DEC& other) const |
| { |
| return (m_p_nd == other.m_p_nd); |
| } |
| |
| // Compares (negatively) to a different iterator object. |
| inline bool |
| operator!=(const PB_DS_TREE_CONST_NODE_ITERATOR_CLASS_C_DEC& other) const |
| { |
| return (m_p_nd != other.m_p_nd); |
| } |
| |
| public: |
| node_pointer m_p_nd; |
| }; |
| |
| #define PB_DS_TREE_NODE_ITERATOR_CLASS_C_DEC \ |
| bin_search_tree_node_it_< \ |
| Node, \ |
| Const_Iterator, \ |
| Iterator, \ |
| Allocator> |
| |
| // Node iterator. |
| template<typename Node, |
| class Const_Iterator, |
| class Iterator, |
| class Allocator> |
| class bin_search_tree_node_it_ : |
| public PB_DS_TREE_CONST_NODE_ITERATOR_CLASS_C_DEC |
| |
| { |
| |
| private: |
| typedef |
| typename Allocator::template rebind< |
| Node>::other::pointer |
| node_pointer; |
| |
| public: |
| |
| // __Iterator's value type. |
| typedef Iterator value_type; |
| |
| // __Iterator's reference type. |
| typedef Iterator reference; |
| |
| // __Iterator's __const reference type. |
| typedef Iterator const_reference; |
| |
| public: |
| |
| // Default constructor. |
| /* |
| inline |
| bin_search_tree_node_it_(); |
| */ |
| |
| inline |
| bin_search_tree_node_it_(const node_pointer p_nd = 0) : PB_DS_TREE_CONST_NODE_ITERATOR_CLASS_C_DEC( |
| const_cast<node_pointer>(p_nd)) |
| { } |
| |
| // Access. |
| inline Iterator |
| operator*() const |
| { |
| return (Iterator(PB_DS_TREE_CONST_NODE_ITERATOR_CLASS_C_DEC::m_p_nd)); |
| } |
| |
| // Returns the node iterator associated with the left node. |
| inline PB_DS_TREE_NODE_ITERATOR_CLASS_C_DEC |
| get_l_child() const |
| { |
| return (PB_DS_TREE_NODE_ITERATOR_CLASS_C_DEC( |
| PB_DS_TREE_CONST_NODE_ITERATOR_CLASS_C_DEC::m_p_nd->m_p_left)); |
| } |
| |
| // Returns the node iterator associated with the right node. |
| inline PB_DS_TREE_NODE_ITERATOR_CLASS_C_DEC |
| get_r_child() const |
| { |
| return (PB_DS_TREE_NODE_ITERATOR_CLASS_C_DEC( |
| PB_DS_TREE_CONST_NODE_ITERATOR_CLASS_C_DEC::m_p_nd->m_p_right)); |
| } |
| |
| }; |
| |
| #undef PB_DS_TREE_CONST_NODE_ITERATOR_CLASS_C_DEC |
| |
| #undef PB_DS_TREE_NODE_ITERATOR_CLASS_C_DEC |
| |
| } // namespace detail |
| } // namespace __gnu_pbds |
| |
| #endif // #ifndef PB_DS_BIN_SEARCH_TREE_NODE_ITERATORS_HPP |
| |