SortAlgorithm.java

package test.slicer.small;

/*
 * @(#)SortAlgorithm.java	1.6f 95/01/31 James Gosling
 *
 * Copyright (c) 1994-1996 Sun Microsystems, Inc. All Rights Reserved.
 *
 * Permission to use, copy, modify, and distribute this software
 * and its documentation for NON-COMMERCIAL or COMMERCIAL purposes and
 * without fee is hereby granted. 
 * Please refer to the file http://java.sun.com/copy_trademarks.html
 * for further important copyright and trademark information and to
 * http://java.sun.com/licensing.html for further important licensing
 * information for the Java (tm) Technology.
 * 
 * SUN MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF
 * THE SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
 * TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
 * PARTICULAR PURPOSE, OR NON-INFRINGEMENT. SUN SHALL NOT BE LIABLE FOR
 * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
 * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES.
 * 
 * THIS SOFTWARE IS NOT DESIGNED OR INTENDED FOR USE OR RESALE AS ON-LINE
 * CONTROL EQUIPMENT IN HAZARDOUS ENVIRONMENTS REQUIRING FAIL-SAFE
 * PERFORMANCE, SUCH AS IN THE OPERATION OF NUCLEAR FACILITIES, AIRCRAFT
 * NAVIGATION OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL, DIRECT LIFE
 * SUPPORT MACHINES, OR WEAPONS SYSTEMS, IN WHICH THE FAILURE OF THE
 * SOFTWARE COULD LEAD DIRECTLY TO DEATH, PERSONAL INJURY, OR SEVERE
 * PHYSICAL OR ENVIRONMENTAL DAMAGE ("HIGH RISK ACTIVITIES").  SUN
 * SPECIFICALLY DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR
 * HIGH RISK ACTIVITIES.
 */

/**
 * A generic sort demonstration algorithm
 * SortAlgorithm.java, Thu Oct 27 10:32:35 1994
 *
 * @author James Gosling
 * @version 	1.6f, 31 Jan 1995
 */

class SortAlgorithm {
	/**
	 * The sort item.
	 */
	private ISortItem parent;

	/**
	 * When true stop sorting.
	 */
	protected boolean stopRequested = false;

	/**
	 * Set the parent.
	 */
	public void setParent(ISortItem p) {
		parent = p;
	}

	/**
	 * Pause for a while.
	 */
	protected void pause() throws Exception {
		if (stopRequested) {
			throw new Exception();
		}
		parent.pause(parent.getH1(), parent.getH2());
	}

	/**
	 * Pause for a while and mark item 1.
	 */
	protected void pause(int H1) throws Exception {
		if (stopRequested) {
			throw new Exception("Sort Algorithm");
		}
		parent.pause(H1, parent.getH2());
	}

	/**
	 * Pause for a while and mark item 1 & 2.
	 */
	protected void pause(int H1, int H2) throws Exception {
		if (stopRequested) {
			throw new Exception();
		}
		parent.pause(H1, H2);
	}

	/**
	 * Stop sorting.
	 */
	public void stop() {
		stopRequested = true;
	}

	/**
	 * Initialize
	 */
	public void init() {
		stopRequested = false;
	}

	/**
	 * This method will be called to
	 * sort an array of integers.
	 */
	void sort(int a[]) throws Exception {
	}
}