/*
This file is part of JOP, the Java Optimized Processor
see <http://www.jopdesign.com/>
Copyright (C) 2001-2008, Martin Schoeberl (martin@jopdesign.com)
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package gcinc;
import java.util.Iterator;
public class myList implements Iterator {
class Item{
int id;
Object item;
Item nextItem;
}
public myList(){}
public Item lastItem,firstItem,currentItem;
public int size;
public void add(Object o) {
size++;
Item e = new Item();
e.item = o;
//add the element at the end of the list
synchronized (this) {
if (lastItem!=null) {
lastItem.nextItem= e;
} else {
firstItem = e;
}
lastItem = e;
}
}
public int size(){
return size;
}
//Iterator interface methods
public Object next() {
if (currentItem==null){
currentItem=firstItem;
}
Object currentObject=currentItem.item;
//make iteration cyclic
if(currentItem.nextItem!=null){
currentItem=currentItem.nextItem;
}else{
currentItem=firstItem;
}
return currentObject;
}
public boolean hasNext() {
if(currentItem.nextItem==null){
return false;
}else {
return true;
}
}
public void remove(){
}
}