package genRac;

import genLRS.*;

/*
 * Implements a factory for restricted access containers, including a
 * container that returns a random item.
 */
public class RandomRACFactory<T> extends ALRSRACFactory<T> {
    /**
     * Create a container that returns a random item.
     */
    public IRAContainer<T> makeRAC() {

        return new LRSRAContainer<T> (new IAlgo<T, Object, T>() {

            public Object emptyCase(LRStruct<? extends T> host, T... input) {
                return ((LRStruct<T>)host).insertFront(input[0]);
            }

            public Object nonEmptyCase(LRStruct<? extends T> host, T... input) {
                /*
                 * Math.Random returns a value between 0.0 and 1.0.
                 */
                if (0.75 > Math.random())
                    return ((LRStruct<T>)host).insertFront(input[0]);
                else
                    return ((LRStruct<T>)host).getRest().execute(this, input[0]);
            }
        });
    }
}