1 /* Copyright 2003-2014 Joaquin M Lopez Munoz.
2 * Distributed under the Boost Software License, Version 1.0.
3 * (See accompanying file LICENSE_1_0.txt or copy at
4 * http://www.boost.org/LICENSE_1_0.txt)
6 * See http://www.boost.org/libs/multi_index for library home page.
9 #ifndef BOOST_MULTI_INDEX_DETAIL_RND_NODE_ITERATOR_HPP
10 #define BOOST_MULTI_INDEX_DETAIL_RND_NODE_ITERATOR_HPP
16 #include <boost/config.hpp> /* keep it first to prevent nasty warns in MSVC */
17 #include <boost/operators.hpp>
19 #if !defined(BOOST_MULTI_INDEX_DISABLE_SERIALIZATION)
20 #include <boost/serialization/nvp.hpp>
21 #include <boost/serialization/split_member.hpp>
26 namespace multi_index{
30 /* Iterator class for node-based indices with random access iterators. */
32 template<typename Node>
33 class rnd_node_iterator:
34 public random_access_iterator_helper<
35 rnd_node_iterator<Node>,
36 typename Node::value_type,
38 const typename Node::value_type*,
39 const typename Node::value_type&>
42 /* coverity[uninit_ctor]: suppress warning */
44 explicit rnd_node_iterator(Node* node_):node(node_){}
46 const typename Node::value_type& operator*()const
51 rnd_node_iterator& operator++()
53 Node::increment(node);
57 rnd_node_iterator& operator--()
59 Node::decrement(node);
63 rnd_node_iterator& operator+=(std::ptrdiff_t n)
65 Node::advance(node,n);
69 rnd_node_iterator& operator-=(std::ptrdiff_t n)
71 Node::advance(node,-n);
75 #if !defined(BOOST_MULTI_INDEX_DISABLE_SERIALIZATION)
76 /* Serialization. As for why the following is public,
77 * see explanation in safe_mode_iterator notes in safe_mode.hpp.
80 BOOST_SERIALIZATION_SPLIT_MEMBER()
82 typedef typename Node::base_type node_base_type;
84 template<class Archive>
85 void save(Archive& ar,const unsigned int)const
87 node_base_type* bnode=node;
88 ar<<serialization::make_nvp("pointer",bnode);
91 template<class Archive>
92 void load(Archive& ar,const unsigned int)
94 node_base_type* bnode;
95 ar>>serialization::make_nvp("pointer",bnode);
96 node=static_cast<Node*>(bnode);
100 /* get_node is not to be used by the user */
102 typedef Node node_type;
104 Node* get_node()const{return node;}
110 template<typename Node>
112 const rnd_node_iterator<Node>& x,
113 const rnd_node_iterator<Node>& y)
115 return x.get_node()==y.get_node();
118 template<typename Node>
120 const rnd_node_iterator<Node>& x,
121 const rnd_node_iterator<Node>& y)
123 return Node::distance(x.get_node(),y.get_node())>0;
126 template<typename Node>
127 std::ptrdiff_t operator-(
128 const rnd_node_iterator<Node>& x,
129 const rnd_node_iterator<Node>& y)
131 return Node::distance(y.get_node(),x.get_node());
134 } /* namespace multi_index::detail */
136 } /* namespace multi_index */
138 } /* namespace boost */