InputDescription.h

// -*- C++ -*-
//
// InputDescription.h is a part of ThePEG - Toolkit for HEP Event Generation
// Copyright (C) 1999-2007 Leif Lonnblad
//
// ThePEG is licenced under version 2 of the GPL, see COPYING for details.
// Please respect the MCnet academic guidelines, see GUIDELINES for details.
//
#ifndef ThePEG_InputDescription_H
#define ThePEG_InputDescription_H
// This is the declaration of the InputDescription class.

#include "ThePEG/Config/ThePEG.h"
#include "ThePEG/Utilities/ClassDescription.h"

namespace ThePEG {

class InputDescription: public Named {

public:

  typedef vector<const InputDescription *> DescriptionVector;

  ThePEG_DECLARE_POINTERS(PersistentBase,BPtr);

public:

  InputDescription(string newName, int newVersion) 
    : Named(newName), theDescription(0), theVersion(newVersion) {}

  void setDescription(const ClassDescriptionBase * cd) {
    theDescription = cd;
  }

  void addBaseClass(const InputDescription * newBase) {
    theBaseClasses.push_back(newBase);
  }

  const DescriptionVector & descriptions() const {
    return theBaseClasses;
  }

  BPtr create() const {
    if ( theDescription ) return theDescription->create();
    DescriptionVector::const_iterator dit = theBaseClasses.begin();
    while ( dit != theBaseClasses.end() ) {
      BPtr obj = (*dit++)->create();
      if ( obj ) return obj;
    }
    return BPtr();
  }

  void input(tBPtr b, PersistentIStream & is) const {
    if ( theDescription ) theDescription->input(b, is, theVersion);
  }

private:

  DescriptionVector theBaseClasses;

  const ClassDescriptionBase * theDescription;

  int theVersion;

};

}

#endif /* ThePEG_InputDescription_H */

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