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//
// G4MCCIndexConversionTable
//
// Class description:
//
// G4MCCIndexConversionTable is used by G4ProductionTable 
// when the cut table is retrieved from the file. 
// An index pointing to a Material-Cut-Couple can be different 
// from the index pointing to the same MCC in the file. This class
// has a map between them.

// Author: H.Kurashige, 20 August 2004 - First implementation
// --------------------------------------------------------------------
#ifndef G4MCCIndexConversionTable_hh
#define G4MCCIndexConversionTable_hh 1

#include <vector>
#include "globals.hh"
#include "G4ios.hh"

class G4MCCIndexConversionTable
{
  public:

    G4MCCIndexConversionTable();
      // Default constructor.

    virtual ~G4MCCIndexConversionTable();
      // Destructor.

    void Reset(std::size_t size);
      // reset conversion table 
 
    G4bool IsUsed(std::size_t index) const;
      // returns 'true' if the indicated MCC in the file 
      // is used in the current production cut table
  
    void SetNewIndex(std::size_t index, std::size_t new_value);   
      // set the index in the current production cut table
      // for the indicated MCC in the file

    G4int GetIndex(std::size_t index) const;
      // get the index in the current production cut table
      // for the indicated MCC in the file
 
    std::size_t size() const;

  protected:

   std::vector<G4int> vecNewIndex;
};

// ------------------
// Inline methods
// ------------------

inline
G4bool G4MCCIndexConversionTable::IsUsed(std::size_t index) const
{
  // returns 'true' if the indicated MCC in the file 
  // is used in the current production cut table
  return ((index < vecNewIndex.size()) && (vecNewIndex[index] >= 0)); 
}

inline
void G4MCCIndexConversionTable::SetNewIndex(std::size_t index,
                                            std::size_t new_value)
{
  // set the index in the current production cut table
  // for the indicated MCC in the file
  if (index < vecNewIndex.size()) vecNewIndex[index] = (G4int)new_value;  
}  

inline
G4int G4MCCIndexConversionTable::GetIndex(std::size_t index) const
{
  // get the index in the current production cut table
  // for the indicated MCC in the file
  return (index < vecNewIndex.size()) ? vecNewIndex[index] : -1;  
}

inline
std::size_t G4MCCIndexConversionTable::size() const
{
  return vecNewIndex.size();
}

#endif