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//
//
// Author: Mathieu Karamitros (kara (AT) cenbg . in2p3 . fr) 
//
// WARNING : This class is released as a prototype.
// It might strongly evolve or even disapear in the next releases.
//
// History:
// -----------
// 10 Oct 2011 M.Karamitros created
//
// -------------------------------------------------------------------

#ifndef  G4MoleculeID_h
#define  G4MoleculeID_h 1

class G4MoleculeID
{
private :
    friend G4MoleculeID operator +(const G4MoleculeID& left,const int& right);
    friend G4MoleculeID operator -(const G4MoleculeID& left,const int& right);
    int fValue;

    static int fLastValue;

public :

    static int Last()
    {
        return fLastValue ;
    }

    static G4MoleculeID Create()
    {
        fLastValue ++;
        return G4MoleculeID(fLastValue);
    }

    static G4MoleculeID Initialize(int i)
    {
        fLastValue = i;
        return G4MoleculeID(i);
    }

    G4MoleculeID(const int d_) : fValue(d_){;}

    G4MoleculeID(){fValue=0;}
    G4MoleculeID(const G4MoleculeID & d_) : fValue(d_.fValue){;}
    inline G4MoleculeID & operator=(const G4MoleculeID & rhs) { this->fValue = rhs.fValue; return *this;}
    G4MoleculeID & operator=(const int & rhs) { this->fValue = rhs; return *this;}
    inline operator int & () { return fValue; }
    inline operator const int & () const { return fValue; }
    inline bool operator==(const G4MoleculeID & rhs) const { return fValue == rhs.fValue; }
    inline bool operator==(const int & rhs) const { return fValue == rhs; }
    inline bool operator<(const G4MoleculeID & rhs) const { return fValue < rhs.fValue; }
};

extern G4MoleculeID gStartCounter;

#endif