G4MoleculeIterator.hh

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// Author: Mathieu Karamitros

// The code is developed in the framework of the ESA AO7146
//
// We would be very happy hearing from you, send us your feedback! :)
//
// In order for Geant4-DNA to be maintained and still open-source,
// article citations are crucial. 
// If you use Geant4-DNA chemistry and you publish papers about your software, 
// in addition to the general paper on Geant4-DNA:
//
// Int. J. Model. Simul. Sci. Comput. 1 (2010) 157–178
//
// we would be very happy if you could please also cite the following
// reference papers on chemistry:
//
// J. Comput. Phys. 274 (2014) 841-882
// Prog. Nucl. Sci. Tec. 2 (2011) 503-508 

#ifndef G4MOLECULEITERATOR_HH_
#define G4MOLECULEITERATOR_HH_

#include <map>

template<typename MOLECULE>
class G4MoleculeIterator
{
protected:
  typedef std::map<G4String, MOLECULE*> MAP;
  MAP* fMap;
  G4bool fDefined;
  typename MAP::iterator fIt;

public:
  G4MoleculeIterator(MAP& _map) :
      fMap(&_map)
  {
    fDefined = false;
  }

  virtual ~G4MoleculeIterator()
  {

  }

  G4MoleculeIterator(const G4MoleculeIterator& right)
  {
    fMap = right.fMap;
    fDefined = right.fDefined;
    fIt = right.fIt;
  }

  G4MoleculeIterator& operator=(const G4MoleculeIterator& right)
  {
    if (this == &right) return *this;
    fMap = right.fMap;
    fDefined = right.fDefined;
    fIt = right.fIt;
    return *this;
  }

  G4bool operator++(int)
  {
    if (!fDefined) return false;
    fIt++;
    return fIt != fMap->end() ? true : false;
  }

  G4bool operator++()
  {
    if (!fDefined) return false;
    fIt++;
    return fIt != fMap->end() ? true : false;
  }

  void reset()
  {
    fDefined = false;
  }

  G4bool operator()()
  {
    if (fDefined == false)
    {
      fDefined = true;
      fIt = fMap->begin();
      return true;
    }
    else
    {
      fIt++;
    }
    if (fIt == fMap->end()) return false;
    return true;
  }

  const G4String& Name()
  {
    return fIt->first;
  }

  MOLECULE* value()
  {
    return fIt->second;
  }
};

#endif /* G4MOLECULEITERATOR_HH_ */