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/* Copyright 2003-2013 Joaquin M Lopez Munoz.
* Distributed under the Boost Software License, Version 1.0.
* (See accompanying file LICENSE_1_0.txt or copy at
* http://www.boost.org/LICENSE_1_0.txt)
*
* See http://www.boost.org/libs/multi_index for library home page.
*/
#ifndef BOOST_MULTI_INDEX_DETAIL_RND_NODE_ITERATOR_HPP
#define BOOST_MULTI_INDEX_DETAIL_RND_NODE_ITERATOR_HPP
#if defined(_MSC_VER)
#pragma once
#endif
#include <boost/config.hpp> /* keep it first to prevent nasty warns in MSVC */
#include <boost/operators.hpp>
#if !defined(BOOST_MULTI_INDEX_DISABLE_SERIALIZATION)
#include <boost/serialization/nvp.hpp>
#include <boost/serialization/split_member.hpp>
#endif
namespace boost{
namespace multi_index{
namespace detail{
/* Iterator class for node-based indices with random access iterators. */
template<typename Node>
class rnd_node_iterator:
public random_access_iterator_helper<
rnd_node_iterator<Node>,
typename Node::value_type,
std::ptrdiff_t,
const typename Node::value_type*,
const typename Node::value_type&>
{
public:
rnd_node_iterator(){}
explicit rnd_node_iterator(Node* node_):node(node_){}
const typename Node::value_type& operator*()const
{
return node->value();
}
rnd_node_iterator& operator++()
{
Node::increment(node);
return *this;
}
rnd_node_iterator& operator--()
{
Node::decrement(node);
return *this;
}
rnd_node_iterator& operator+=(std::ptrdiff_t n)
{
Node::advance(node,n);
return *this;
}
rnd_node_iterator& operator-=(std::ptrdiff_t n)
{
Node::advance(node,-n);
return *this;
}
#if !defined(BOOST_MULTI_INDEX_DISABLE_SERIALIZATION)
/* Serialization. As for why the following is public,
* see explanation in safe_mode_iterator notes in safe_mode.hpp.
*/
BOOST_SERIALIZATION_SPLIT_MEMBER()
typedef typename Node::base_type node_base_type;
template<class Archive>
void save(Archive& ar,const unsigned int)const
{
node_base_type* bnode=node;
ar<<serialization::make_nvp("pointer",bnode);
}
template<class Archive>
void load(Archive& ar,const unsigned int)
{
node_base_type* bnode;
ar>>serialization::make_nvp("pointer",bnode);
node=static_cast<Node*>(bnode);
}
#endif
/* get_node is not to be used by the user */
typedef Node node_type;
Node* get_node()const{return node;}
private:
Node* node;
};
template<typename Node>
bool operator==(
const rnd_node_iterator<Node>& x,
const rnd_node_iterator<Node>& y)
{
return x.get_node()==y.get_node();
}
template<typename Node>
bool operator<(
const rnd_node_iterator<Node>& x,
const rnd_node_iterator<Node>& y)
{
return Node::distance(x.get_node(),y.get_node())>0;
}
template<typename Node>
std::ptrdiff_t operator-(
const rnd_node_iterator<Node>& x,
const rnd_node_iterator<Node>& y)
{
return Node::distance(y.get_node(),x.get_node());
}
} /* namespace multi_index::detail */
} /* namespace multi_index */
} /* namespace boost */
#endif
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