/* Generated By:JJTree: Do not edit this line. Node.java */
/*
 *    GeoTools - OpenSource mapping toolkit
 *    http://geotools.org
 *    (C) 2006, GeoTools Project Managment Committee (PMC)
 *    
 *    This library is free software; you can redistribute it and/or
 *    modify it under the terms of the GNU Lesser General Public
 *    License as published by the Free Software Foundation;
 *    version 2.1 of the License.
 *
 *    This library is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *    Lesser General Public License for more details.
 */

package org.geotools.filter.text.cql2;

/* All AST nodes must implement this interface.  It provides basic
   machinery for constructing the parent and child relationships
 * @source $URL: http://svn.geotools.org/geotools/tags/2.4.1/modules/library/cql/modified-src/org/geotools/filter/text/cql2/Node.java $
   between nodes. */

interface Node {
    
  public void dispose();
  
  public Token getToken();
  
  public int getType();

  /** This method is called after the node has been made the current
    node.  It indicates that child nodes can now be added to it. */
  public void jjtOpen();

  
  /** This method is called after all the child nodes have been
    added. */
  public void jjtClose();

  /** This pair of methods are used to inform the node of its
    parent. */
  public void jjtSetParent(Node n);
  public Node jjtGetParent();

  /** This method tells the node to add its argument to the node's
    list of children.  */
  public void jjtAddChild(Node n, int i);

  /** This method returns a child node.  The children are numbered
     from zero, left to right. */
  public Node jjtGetChild(int i);

  /** Return the number of children the node has. */
  public int jjtGetNumChildren();

  /** Accept the visitor. **/
  public Object jjtAccept(CQLParserVisitor visitor, Object data);
}
