visitor.h

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// -*- Mode: C++; tab-width: 2; -*-
// vi: set ts=2:
//

#ifndef BALL_CONCEPT_VISITOR_H
#define BALL_CONCEPT_VISITOR_H

#ifndef BALL_COMMON_H
# include <BALL/common.h>
#endif

namespace BALL 
{

  template <typename Host>
  class Visitor
  {
    public:

    Visitor()
      ;

    Visitor(const Visitor& visitor)
      ;

    virtual ~Visitor()
      ;


    virtual void visit(Host &) = 0;

    virtual void dummy();
  };
  
  template <typename T>
  void Visitor<T>::dummy(){}

  template <typename T>
  BALL_INLINE
  Visitor<T>::Visitor()
    
  {
  }

  template <typename Host>
  BALL_INLINE
  Visitor<Host>::Visitor(const Visitor<Host>& /* visitor */)
    
  {
  }

  template <typename T>
  Visitor<T>::~Visitor()
    
  {
  }
}

#endif // BALL_CONCEPT_VISITOR_H