IdentContIndex.h

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/*
  Copyright (C) 2002-2017 CERN for the benefit of the ATLAS collaboration
*/
 
#ifndef ATHLINKS_TOOLS_IDENTCONTINDEX_H
# define ATHLINKS_TOOLS_IDENTCONTINDEX_H

 
class IdentContIndex 
{
public:

    IdentContIndex();
    IdentContIndex(unsigned short collHash, unsigned short objIndex);
    IdentContIndex(unsigned int hashAndIndex);


    unsigned short collHash()     const;
    unsigned short objIndex()     const;
    unsigned int   hashAndIndex() const;
    bool           isValid()      const;
        


    void setHashAndIndex(unsigned int hashAndIndex);
    void setCollHash(unsigned short hash);
    void setObjIndex(unsigned short index);
 
private:
    unsigned short m_collHash;
    unsigned short m_objIndex;
};
 
 
 
// inline definitions
 
inline 
IdentContIndex::IdentContIndex() 
        :
    m_collHash(0xFFFF),
        m_objIndex(0xFFFF)
{}
 
inline 
IdentContIndex::IdentContIndex(unsigned short collHash, unsigned short objIndex)
        :
    m_collHash(collHash),
        m_objIndex(objIndex)
{}
 
inline 
IdentContIndex::IdentContIndex(unsigned int hashAndIndex)
{
    setHashAndIndex(hashAndIndex);
}
 
 
inline 
unsigned short
IdentContIndex::collHash() const
{
    return (m_collHash);
}
 
inline 
unsigned short
IdentContIndex::objIndex() const
{
    return (m_objIndex);
}
 
inline 
unsigned int   
IdentContIndex::hashAndIndex() const
{
    // Concatenate hash and index
    unsigned int result = (m_collHash << 16) + m_objIndex;
    return (result);
}
        
inline 
bool
IdentContIndex::isValid()      const
{
    // is valid if both hash and index are not default values
    return (m_collHash != 0xFFFF && m_objIndex != 0xFFFF);
}
 
 
inline 
void
IdentContIndex::setHashAndIndex(unsigned int hashAndIndex)
{
    // Extract hash and index
    m_collHash = static_cast<unsigned short> (hashAndIndex >> 16);
    m_objIndex = static_cast<unsigned short> (hashAndIndex & 0xFFFF);
}
 
inline 
void
IdentContIndex::setCollHash(unsigned short hash)
{
    m_collHash = hash;
}
 
inline 
void
IdentContIndex::setObjIndex(unsigned short index)
{
    m_objIndex = index;
}
 
#endif // not ATHLINKS_TOOLS_IDENTCONTINDEX_H