java/pig-galago/src/com/yahoo/pig/impl/logicalLayer/parser/Node.java

   1 /* Generated By:JJTree: Do not edit this line. Node.java */
   2
   3 package com.yahoo.pig.impl.logicalLayer.parser;
   4
   5 /* All AST nodes must implement this interface.  It provides basic
   6    machinery for constructing the parent and child relationships
   7    between nodes. */
   8
   9 public interface Node {
  10
  11   /** This method is called after the node has been made the current
  12     node.  It indicates that child nodes can now be added to it. */
  13   public void jjtOpen();
  14
  15   /** This method is called after all the child nodes have been
  16     added. */
  17   public void jjtClose();
  18
  19   /** This pair of methods are used to inform the node of its
  20     parent. */
  21   public void jjtSetParent(Node n);
  22   public Node jjtGetParent();
  23
  24   /** This method tells the node to add its argument to the node's
  25     list of children.  */
  26   public void jjtAddChild(Node n, int i);
  27
  28   /** This method returns a child node.  The children are numbered
  29      from zero, left to right. */
  30   public Node jjtGetChild(int i);
  31
  32   /** Return the number of children the node has. */
  33   public int jjtGetNumChildren();
  34 }