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/* ----------------------------------------------------------------------- *
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* This file is part of GEL, http://www.imm.dtu.dk/GEL
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* Copyright (C) the authors and DTU Informatics
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* For license and list of authors, see ../../doc/intro.pdf
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* ----------------------------------------------------------------------- */
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/**
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* @file ItemID.h
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* @brief Base class for the integer IDs used to refer to mesh entities.
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*/
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#ifndef __HMESH_ITEMID_H__
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#define __HMESH_ITEMID_H__
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#include <iostream>
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namespace HMesh
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{
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/** The ItemID class is simply a wrapper around an index. This class associates a type
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with the index. */
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template<typename T>
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class ItemID
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{
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public:
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ItemID(): index(INVALID_INDEX){}
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bool operator ==(const ItemID& other) const { return index == other.index; }
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bool operator !=(const ItemID& other) const { return index != other.index; }
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bool operator <(const ItemID& other) const { return index < other.index; }
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private:
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typedef size_t IndexType;
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static const IndexType INVALID_INDEX = -1;
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IndexType index;
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explicit ItemID(IndexType _index): index(_index){}
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friend class ConnectivityKernel;
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template<typename ITEM> friend class ItemVector;
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template<typename ITEM, typename ITEMID> friend class AttributeVector;
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template<typename X>
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friend std::ostream& operator<<(std::ostream& os, const ItemID<X>&);
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};
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template<typename T>
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inline std::ostream& operator<<(std::ostream& os, const ItemID<T>& iid)
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{
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return (os << iid.index);
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}
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}
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#endif
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