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// $Id$
// ============================================================================
//
// = LIBRARY
//
// = FILENAME
// NodeVisitor.h
//
// = AUTHOR
// Michael Kircher
//
// = DESCRIPTION
// This file descibes the Visitor used by the any evaluator.
//
// ============================================================================
#ifndef NODE_VISITOR_H
#define NODE_VISITOR_H
class StructNode;
class DoubleNode;
class LongNode;
class ULongNode;
class StringNode;
// base class for all the specialized visitors
class NodeVisitor {
public:
virtual void visitStructNode (StructNode *structNode) = 0;
virtual void visitDoubleNode (DoubleNode *doubleNode) = 0;
virtual void visitLongNode (LongNode *longNode) = 0;
virtual void visitULongNode (ULongNode *uLongNode) = 0;
virtual void visitStringNode (StringNode *stringNode) = 0;
protected:
NodeVisitor () {}
};
#endif // NODE_VISITOR_H
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