/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * JFlex 1.4                                                               * * Copyright (C) 1998-2004  Gerwin Klein <lsf@jflex.de>                    * * All rights reserved.                                                    * *                                                                         * * This program is free software; you can redistribute it and/or modify    * * it under the terms of the GNU General Public License. See the file      * * COPYRIGHT for more information.                                         * *                                                                         * * 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, write to the Free Software Foundation, Inc., * * 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA                 * *                                                                         * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */package JFlex.gui;import JFlex.*;import java.io.File;/** * Low priority thread for code generation (low priority  * that gui has time for screen updates) * * @author Gerwin Klein * @version JFlex 1.4, $Revision: 2.5 $, $Date: 2004/04/12 10:07:48 $ */public class GeneratorThread extends Thread {  /** there must be at most one instance of this Thread running */	private static volatile boolean running = false;	/** input file setting from GUI */	String  inputFile;  /** output directory */  String outputDir;    /** main UI component, likes to be notified when generator finishes */  MainFrame parent;	/**	 * Create a new GeneratorThread, but do not run it yet.	 * 	 * @param parent      the frame, main UI component	 * @param inputFile   input file from UI settings	 * @param messages    where generator messages should appear	 * @param outputDir   output directory from UI settings	 */  public GeneratorThread(MainFrame parent, String inputFile,                          String outputDir) {    this.parent    = parent;    this.inputFile = inputFile;    this.outputDir = outputDir;  }	/**	 * Run the generator thread. Only one instance of it can run at any time.	 */  public void run() {  	if (running) {  		Out.error(ErrorMessages.ALREADY_RUNNING);			parent.generationFinished(false);  	}  	else {  		running = true;			setPriority(MIN_PRIORITY);    			try {        if (!outputDir.equals("")) {          Options.setDir(outputDir);        }				Main.generate(new File(inputFile));				Out.statistics();				parent.generationFinished(true);			}			catch (GeneratorException e) {				Out.statistics();				parent.generationFinished(false);			}      finally {        running = false;      }  	}  }}