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WorkList.java

package edu.ksu.cis.bandera.bofa;

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * Bandera, a Java(TM) analysis and transformation toolkit           *
 * Copyright (C) 1998, 1999   Shawn Laubach (laubach@acm.org)        *
 * All rights reserved.                                              *
 *                                                                   *
 * This work was done as a project in the SAnToS Laboratory,         *
 * Department of Computing and Information Sciences, Kansas State    *
 * University, USA (http://www.cis.ksu.edu/santos).                  *
 * It is understood that any modification not identified as such is  *
 * not covered by the preceding statement.                           *
 *                                                                   *
 * This work is free software; you can redistribute it and/or        *
 * modify it under the terms of the GNU Library General Public       *
 * License as published by the Free Software Foundation; either      *
 * version 2 of the License, or (at your option) any later version.  *
 *                                                                   *
 * This work 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 *
 * Library General Public License for more details.                  *
 *                                                                   *
 * You should have received a copy of the GNU Library General Public *
 * License along with this toolkit; if not, write to the             *
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,      *
 * Boston, MA  02111-1307, USA.                                      *
 *                                                                   *
 * Java is a trademark of Sun Microsystems, Inc.                     *
 *                                                                   *
 * To submit a bug report, send a comment, or get the latest news on *
 * this project and other SAnToS projects, please visit the web-site *
 *                http://www.cis.ksu.edu/santos                      *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

import java.util.LinkedList;
import java.util.Iterator;

/* 
 * WorkList.java 
 * $Id: WorkList.java,v 1.1.1.1 2002/01/24 03:42:08 pserver Exp $
 */

/**
 * This class represents the work list algorithm to be used in the flow analysis.
 *
 * @author <A HREF="http://www.cis.ksu.edu/~hatcliff">John Hatcliff</A>
 * @author
 * <a href="http://www.cis.ksu.edu/~rvprasad">Venkatesh Prasad Ranganath</a> 
 * @version $Name:  $($Revision: 1.1.1.1 $)
 */
public class WorkList 
{
    /** 
     * List of work. 
     */
    private LinkedList list = null;

    /**
     * Constructor of the class. 
     */
    public WorkList()
    {
        list = new LinkedList();
    }
    /**
     * Empty the work list.  Any existing work piece are lost.
     *
     */
    public void clear() {
        list.clear();
    }
    /**
     * Executes the work in the work list.
     */
    public void doWork()
    {
        FGWork w;

        while (!this.isEmpty()) {
            w = this.remove();
            w.doWork();
        }
    }
    /**
     * Inserts new work into the list.
     * 
     * @param work the new work to be added to the list. 
     */
    public void insert(FGWork work)
    {
        list.addLast(work);
    }
    /**
     * Tells whether the work list is empty.
     *
     * @return true if the worklist is empty, false otherwise. 
     */
    public boolean isEmpty()
    {
        return list.isEmpty();
    }
    /**
     * Provides an iterator for the list.
     *
     * @return an iterator for the list. 
     */
    public Iterator iterator()
    {
        return list.iterator();
    }
    /**
     * Provides the current work in the list.
     *
     * @return the current work in the list. 
     */
    public FGWork remove()
    {
        return (FGWork) list.removeFirst();
    }
}

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