Schcmp{

	traversal printClass(DisplayVisitor dV)
	{ to *; }

	traversal toClassDef(ClistVisitor cV)
	{to ClassDef;}

	traversal toClassnames(ClassNameVisitor cV)
	{to Classname;}

	void print_temp() 
	(@
		PrintWriter w = new PrintWriter(System.out, true);
		this.printClass(new DisplayVisitor(w));
		w.flush();
	@)
															   
	void compare(Schcmp b)
	(@
		  ClistVisitor cVA = new ClistVisitor();
		  ClistVisitor cVB = new ClistVisitor();
		  		  
		  this.toClassDef(cVA);
		  b.toClassDef(cVB);
		  
		  ClassDef_List classlistA = cVA.get_clist();
		  ClassDef_List classlistB = cVB.get_clist();
		  
		  System.out.println("\n");

		  ClassNameVisitor cNVA = new ClassNameVisitor(classlistB,false,true);

		  this.toClassnames(cNVA);
		  if(cNVA.get_same())
			System.out.println("\tNo Differences");
	@)

}


ClistVisitor{
	 init (@ clist=new ClassDef_List(null); @)

	 before ClassDef
		(@
		
			if(clist.isEmpty())
			    clist.push(host);
			else clist.addElement(host);
			//System.out.println("The classname is "+ host.get_classname().get_s_classname());
  		 @)
}

ClassNameVisitor{
	  init (@ inlist=false;
	  		  same=true; @)

	  before Classname
	  (@
		
		java.util.Enumeration cl=classlist.elements();
		while(cl.hasMoreElements()){
			ClassDef classdef= (ClassDef) cl.nextElement();
			//System.out.println("ClassDef List B: "+ classdef.get_classname().get_s_classname());
			//System.out.println("Host :"+ host.get_s_classname());
			if(classdef.get_classname().get_s_classname().equals(host.get_s_classname())){
				inlist=true;
	    		
	    	}
	    }
    	if(!inlist){
 			System.out.println("\t"+host.get_s_classname());
			same=false;
		}	
	  @)

	  after ClassDef
	  (@
		  	inlist=false;
	  @)

}
Main
{
	(@
	  	public static void main(String[] argv) throws Exception 
	   {
	       try 
	       {
          	// Check arg list
            //if (argv.length != 2 ) schcmp.PrintHelp();
				// Check input	files
				File schema1 = new File(argv[0]);
            if (!schema1.exists()) 
            {
            	System.err.println("Could not find "+argv[0]);
               throw new FileNotFoundException();
            }
				File schema2 = new File(argv[1]);
            if (!schema2.exists())
            {
	            System.err.println("Could not find "+argv[1]);
               throw new FileNotFoundException();
            }
            Schcmp schemaA = Schcmp.parse(new FileInputStream(schema1));
				Schcmp schemaB = Schcmp.parse(new FileInputStream(schema2));
	         //printout the Schema of both A and B
				//schemaA.print_temp();
				//schemaB.print_temp();
				System.out.print("\nThe classes unique to "+argv[0]+":");
				schemaA.compare(schemaB);
				System.out.print("\nThe classes unique to "+argv[1]+":");
				schemaB.compare(schemaA);
			 } 
	       catch (ParseError e) 
	       {
		       System.err.println("Failed to parse file.");
		       e.printStackTrace(); 
		       System.exit(1);
		    } 
	       catch (FileNotFoundException e) 
	       {
		       System.err.println("\nPlease check and see if the file name exists. ");
		       System.exit(1);
		    }
	   }
   @)
}