//Jonathan Kleiner  1/29/05  CSG110   HW2

import edu.neu.ccs.demeter.dj.*;
import java.util.*;
import java.io.*;

public class GenericVisitor extends Visitor{
    int indent = 0;
    String lastClass = "";
    Vector termList = new Vector(10);
    
    public void start(){
        System.out.println(" start generic display ");
        termList.add("Integer");
        termList.add("java.lang.Character");
        termList.add("java.lang.Boolean");
        termList.add("java.lang.Byte");
        termList.add("java.lang.Short");
        termList.add("java.lang.Long");
        termList.add("java.lang.Float");
        termList.add("java.lang.Double");
        termList.add("java.lang.String");
        termList.add("java.lang.Void");
        try{
            BufferedReader in = new BufferedReader(new FileReader("newterminals"));
            String str;
            while((str = in.readLine()) != null){
                termList.add(str);
            }
            in.close();
        } catch (IOException e){}
    }

    public void before(Object host){
        indent++;
        String className = host.getClass().getName();
        if(lastClass.compareTo(className)!=0){
            for(int i=0; i<indent; i++) System.out.print("   ");
            System.out.println(className);
        }
        lastClass = className;
    }
    
    public void before(Object source, String label, Object target){
        indent++;
        String className;
        int index;
        lastClass = target.getClass().getName();
		if( (index = lastClass.lastIndexOf(".")) > 0 )
            className = lastClass.substring(index+1);
        else
            className = lastClass;
        for(int i=0; i<indent; i++) System.out.print("   ");
        if(isTerminalWithInformation(target))
            System.out.println("<" + label + "> : " + className + " \"" + target + "\"");
        else
            System.out.println("<" + label + "> : " + lastClass);
    }
      
    public void after(Object host){
        indent--;
    }
      
    public void after(Object source, String label, Object target){
        indent--;
    }
      
    public void finish(){
        System.out.println(" finish generic display ");
    }
    
    private boolean isTerminalWithInformation(Object obj){
        ListIterator iter = termList.listIterator();
        String next;
        String className = obj.getClass().getName();
        while(iter.hasNext()){
            next = (String)iter.next();
            //if(next.compareTo(className)==0)
            if(className.endsWith(next))
            return true;
        }
        return false;
    }
}