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/* Copyright 2003-2020 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_HASH_INDEX_ITERATOR_HPP #define BOOST_MULTI_INDEX_DETAIL_HASH_INDEX_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> #include <boost/serialization/version.hpp> #endif namespace boost{ namespace multi_index{ namespace detail{ /* Iterator class for hashed indices. */ struct hashed_index_global_iterator_tag{}; struct hashed_index_local_iterator_tag{}; template< typename Node,typename BucketArray, typename IndexCategory,typename IteratorCategory > class hashed_index_iterator: public forward_iterator_helper< hashed_index_iterator<Node,BucketArray,IndexCategory,IteratorCategory>, typename Node::value_type, typename Node::difference_type, const typename Node::value_type*, const typename Node::value_type&> { public: /* coverity[uninit_ctor]: suppress warning */ hashed_index_iterator(){} hashed_index_iterator(Node* node_):node(node_){} const typename Node::value_type& operator*()const { return node->value(); } hashed_index_iterator& operator++() { this->increment(IteratorCategory()); 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 version) { load(ar,version,IteratorCategory()); } template<class Archive> void load( Archive& ar,const unsigned int version,hashed_index_global_iterator_tag) { node_base_type* bnode; ar>>serialization::make_nvp("pointer",bnode); node=static_cast<Node*>(bnode); if(version<1){ BucketArray* throw_away; /* consume unused ptr */ ar>>serialization::make_nvp("pointer",throw_away); } } template<class Archive> void load( Archive& ar,const unsigned int version,hashed_index_local_iterator_tag) { node_base_type* bnode; ar>>serialization::make_nvp("pointer",bnode); node=static_cast<Node*>(bnode); if(version<1){ BucketArray* buckets; ar>>serialization::make_nvp("pointer",buckets); if(buckets&&node&&node->impl()==buckets->end()->prior()){ /* end local_iterators used to point to end node, now they are null */ node=0; } } } #endif /* get_node is not to be used by the user */ typedef Node node_type; Node* get_node()const{return node;} private: void increment(hashed_index_global_iterator_tag) { Node::template increment<IndexCategory>(node); } void increment(hashed_index_local_iterator_tag) { Node::template increment_local<IndexCategory>(node); } Node* node; }; template< typename Node,typename BucketArray, typename IndexCategory,typename IteratorCategory > bool operator==( const hashed_index_iterator< Node,BucketArray,IndexCategory,IteratorCategory>& x, const hashed_index_iterator< Node,BucketArray,IndexCategory,IteratorCategory>& y) { return x.get_node()==y.get_node(); } } /* namespace multi_index::detail */ } /* namespace multi_index */ #if !defined(BOOST_MULTI_INDEX_DISABLE_SERIALIZATION) /* class version = 1 : hashed_index_iterator does no longer serialize a bucket * array pointer. */ namespace serialization { template< typename Node,typename BucketArray, typename IndexCategory,typename IteratorCategory > struct version< boost::multi_index::detail::hashed_index_iterator< Node,BucketArray,IndexCategory,IteratorCategory > > { BOOST_STATIC_CONSTANT(int,value=1); }; } /* namespace serialization */ #endif } /* namespace boost */ #endif
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