167 lines
4.2 KiB
Plaintext
167 lines
4.2 KiB
Plaintext
/* Copyright 2003-2014 Joaquin M Lopez Munoz.
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* Distributed under the Boost Software License, Version 1.0.
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* (See accompanying file LICENSE_1_0.txt or copy at
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* http://www.boost.org/LICENSE_1_0.txt)
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*
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* See http://www.boost.org/libs/multi_index for library home page.
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*/
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#ifndef BOOST_MULTI_INDEX_DETAIL_HASH_INDEX_ITERATOR_HPP
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#define BOOST_MULTI_INDEX_DETAIL_HASH_INDEX_ITERATOR_HPP
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#if defined(_MSC_VER)
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#pragma once
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#endif
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#include <boost/config.hpp> /* keep it first to prevent nasty warns in MSVC */
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#include <boost/operators.hpp>
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#if !defined(BOOST_MULTI_INDEX_DISABLE_SERIALIZATION)
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#include <boost/serialization/nvp.hpp>
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#include <boost/serialization/split_member.hpp>
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#include <boost/serialization/version.hpp>
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#endif
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namespace boost{
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namespace multi_index{
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namespace detail{
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/* Iterator class for hashed indices.
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*/
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struct hashed_index_global_iterator_tag{};
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struct hashed_index_local_iterator_tag{};
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template<typename Node,typename BucketArray,typename Category>
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class hashed_index_iterator:
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public forward_iterator_helper<
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hashed_index_iterator<Node,BucketArray,Category>,
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typename Node::value_type,
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std::ptrdiff_t,
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const typename Node::value_type*,
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const typename Node::value_type&>
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{
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public:
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/* coverity[uninit_ctor]: suppress warning */
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hashed_index_iterator(){}
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hashed_index_iterator(Node* node_):node(node_){}
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const typename Node::value_type& operator*()const
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{
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return node->value();
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}
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hashed_index_iterator& operator++()
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{
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this->increment(Category());
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return *this;
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}
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#if !defined(BOOST_MULTI_INDEX_DISABLE_SERIALIZATION)
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/* Serialization. As for why the following is public,
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* see explanation in safe_mode_iterator notes in safe_mode.hpp.
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*/
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BOOST_SERIALIZATION_SPLIT_MEMBER()
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typedef typename Node::base_type node_base_type;
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template<class Archive>
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void save(Archive& ar,const unsigned int)const
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{
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node_base_type* bnode=node;
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ar<<serialization::make_nvp("pointer",bnode);
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}
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template<class Archive>
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void load(Archive& ar,const unsigned int version)
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{
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load(ar,version,Category());
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}
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template<class Archive>
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void load(
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Archive& ar,const unsigned int version,hashed_index_global_iterator_tag)
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{
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node_base_type* bnode;
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ar>>serialization::make_nvp("pointer",bnode);
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node=static_cast<Node*>(bnode);
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if(version<1){
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BucketArray* throw_away; /* consume unused ptr */
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ar>>serialization::make_nvp("pointer",throw_away);
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}
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}
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template<class Archive>
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void load(
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Archive& ar,const unsigned int version,hashed_index_local_iterator_tag)
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{
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node_base_type* bnode;
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ar>>serialization::make_nvp("pointer",bnode);
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node=static_cast<Node*>(bnode);
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if(version<1){
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BucketArray* buckets;
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ar>>serialization::make_nvp("pointer",buckets);
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if(buckets&&node&&node->impl()==buckets->end()->prior()){
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/* end local_iterators used to point to end node, now they are null */
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node=0;
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}
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}
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}
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#endif
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/* get_node is not to be used by the user */
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typedef Node node_type;
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Node* get_node()const{return node;}
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private:
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void increment(hashed_index_global_iterator_tag)
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{
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Node::increment(node);
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}
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void increment(hashed_index_local_iterator_tag)
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{
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Node::increment_local(node);
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}
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Node* node;
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};
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template<typename Node,typename BucketArray,typename Category>
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bool operator==(
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const hashed_index_iterator<Node,BucketArray,Category>& x,
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const hashed_index_iterator<Node,BucketArray,Category>& y)
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{
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return x.get_node()==y.get_node();
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}
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} /* namespace multi_index::detail */
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} /* namespace multi_index */
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#if !defined(BOOST_MULTI_INDEX_DISABLE_SERIALIZATION)
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/* class version = 1 : hashed_index_iterator does no longer serialize a bucket
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* array pointer.
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*/
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namespace serialization {
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template<typename Node,typename BucketArray,typename Category>
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struct version<
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boost::multi_index::detail::hashed_index_iterator<Node,BucketArray,Category>
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>
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{
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BOOST_STATIC_CONSTANT(int,value=1);
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};
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} /* namespace serialization */
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#endif
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} /* namespace boost */
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#endif
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