EvtAmpIndex.hh

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//--------------------------------------------------------------------------
//
// Environment:
//      This software is part of the EvtGen package developed jointly
//      for the BaBar and CLEO collaborations.  If you use all or part
//      of it, please give an appropriate acknowledgement.
//
// Copyright Information: See EvtGen/COPYRIGHT
//      Copyright (C) 2002      Caltech, UCSB
//
// Module: EvtGen/EvtAmpIndex.hh
//
// Description:This class keeps track of indices on amplitude objects.
//
// Modification history:
//
//    Ryd     Nov 22, 2002         Module created
//
//------------------------------------------------------------------------
 
#ifndef EVTAMPINDEX_HH
#define EVTAMPINDEX_HH
 
#include <vector>
 
class EvtAmpIndex {
 
  friend class EvtAmpSubIndex;
 
public:
  EvtAmpIndex( std::vector<int> ind );
  virtual ~EvtAmpIndex() {}
 
  void reset();
  bool next();
 
  int index();
 
private:
  std::vector<int> _ind;
  int              _size;
  std::vector<int> _state;
  std::vector<int> _nstate;
};
 
#endif