DDLElementRegistry.h

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#ifndef DDL_ElementRegistry_H
#define DDL_ElementRegistry_H

#include <string>
#include <map>

#include <DetectorDescription/Base/interface/Singleton.h>
#include <DetectorDescription/Base/interface/Singleton.icc>

class DDXMLElement;

#include <CLHEP/Evaluator/Evaluator.h>
#include "DetectorDescription/ExprAlgo/interface/ExprEvalSingleton.h"


class DDLElementRegistry
{

 public:
  typedef std::map <std::string, DDXMLElement*> RegistryMap;

  DDLElementRegistry();

  ~DDLElementRegistry();
  
  void registerElement(const std::string& name, DDXMLElement*);


  DDXMLElement* getElement(const std::string& name); 

  const std::string& getElementName(DDXMLElement* theElement) const;
  ClhepEvaluator &evaluator() { return ExprEvalSingleton::instance(); }

 private:
  RegistryMap registry_;
};

typedef DDI::Singleton<DDLElementRegistry> DDLGlobalRegistry;

#endif