package de.fub.bytecode.util;
import java.util.Vector;
import de.fub.bytecode.classfile.JavaClass;

/** 
 * Utility class implementing a (typesafe) queue of JavaClass
 * objects.
 *
 * @version $Id: ClassQueue.java,v 1.2 2001/05/09 09:26:57 dahm Exp $
 * @author <A HREF="http://www.berlin.de/~markus.dahm/">M. Dahm</A> 
 * @see Vector
*/
public class ClassQueue {
  protected int    left = 0;
  private   Vector vec  = new Vector();

  public void      enqueue(JavaClass clazz) { vec.addElement(clazz); }
  public JavaClass dequeue()                { return (JavaClass)vec.elementAt(left++); }
  public boolean   empty()                  { return vec.size() <= left; }
}