Schcmp{

	traversal printClass(DisplayVisitor dV)
	{ to *; }

	void print_temp() 
	(@
		PrintWriter w = new PrintWriter(System.out, true);
		this.printClass(new DisplayVisitor(w));
		w.flush();
	@)
}
Main
{
	(@
	  	public static void main(String[] argv) throws Exception 
	   {
	       try 
	       {
				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();
			 } 
	       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);
		    }
	   }
   @)
}