TPObjRef.h

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/*
  Copyright (C) 2002-2025 CERN for the benefit of the ATLAS collaboration
*/
 
#ifndef TPObjRef_H
#define TPObjRef_H

 
 
class TPObjRef {
public:
 
  struct typeID_t {
    typeID_t( unsigned short tlCnvID=0, unsigned short cnvID=0 )
      : m_TLCnvID(tlCnvID), m_cnvID(cnvID) {}

    unsigned short topLevelCnvID() const { return m_TLCnvID; }

    unsigned short cnvID() const { return m_cnvID; }

    unsigned    value() const { return m_TLCnvID<<16 | m_cnvID; }

    bool    isNull() const { return !(m_TLCnvID | m_cnvID); }
    
    unsigned short  m_TLCnvID; 
    unsigned short  m_cnvID; 
  };

  TPObjRef() : m_index(0) {}

  TPObjRef( const typeID_t& typeID, int index )
    : m_typeID(typeID),
      m_index(index)
  { }

  bool isNull() const { return m_typeID.isNull(); }

  unsigned      typeID() const { return m_typeID.value(); }

  unsigned short    topLevelCnvID() const { return m_typeID.topLevelCnvID(); }

  unsigned      index() const  { return m_index; }
 
protected:
  typeID_t  m_typeID;   
  unsigned  m_index; 
};
 
 
#endif