ijsubnode.java

一个JAVA编写的简单编译器

package ast;
/**
 * IJSubNode set the interface for all nodes of ast
 */

public interface IJSubNode  {
  
// predecessor

  void setParent(IJSubNode n);
  

  IJSubNode getParent();

  // successor
/**
 * a successor (=node) attached
 */ 
  void addChild(IJSubNode n);
  
/**
 * param i ,Index of nodes 0, 1, 2, 3, ...
 */ 
  IJSubNode getChild(int i);
  
/**
 * number of predecessor sorted.
 * 
 */ 
  int getNumChildren();
  
/**
 * a enumerate  successor fetched.
 * 
 */ 
  java.util.Enumeration elements ();

  
 /**
 * code generation for the node.
 * 
 */ 
  void codegen ();
  

  int getDepth ();

  // output  ast

  String toString(String prefix);
  
 /**
 * output with indent
 * 
 * param prefix the String for indent the output
 */ 
  void dump(String prefix);
   
 /**
 * select the XML-Text for one node
 */ 
  String getXMLType ();
  
 /**
 * XML-output the nodes
 */ 
  void genXML (java.io.PrintStream p, String prefix);

}