code: //==============================================================================
  //	
  //	Copyright (c) 2002-
  //	Authors:
  //	* Andrew Hinton <ug60axh@cs.bham.ac.uk> (University of Birmingham)
  //	* Dave Parker <david.parker@comlab.ox.ac.uk> (University of Oxford, formerly University of Birmingham)
  //	
  //------------------------------------------------------------------------------
  //	
  //	This file is part of PRISM.
  //	
  //	PRISM 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 2 of the License, or
  //	(at your option) any later version.
  //	
  //	PRISM 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 PRISM; if not, write to the Free Software Foundation,
  //	Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  //	
  //==============================================================================
  
  package userinterface.model.computation;
  
  import javax.swing.*;
  
  import userinterface.model.*;
  import parser.ast.*;
  import prism.*;
  import userinterface.util.*;
  import userinterface.GUIComputationThread;
  
  public class ParseModelThread extends GUIComputationThread
  {
  	private GUIMultiModelHandler handler;
  	private String parseThis;
  	private boolean isPepa;
  	private boolean background;
  	private ModulesFile mod;
  	private String errMsg;
  	private PrismException parseError;
  	static int counter = 0;
  	int id;
  	long before;
  
  	/** Creates a new instance of ParseModelThread */
  	public ParseModelThread(GUIMultiModelHandler handler, String parseThis, boolean isPepa, boolean background)
  	{
  		super(handler.getGUIPlugin());
  		this.handler = handler;
  		this.parseThis = parseThis;
  		this.isPepa = isPepa;
  		this.background = background;
  		id = counter;
  		counter++;
  	}
  
  	public void run()
  	{
  		// Notify user interface of the start of computation
  		SwingUtilities.invokeLater(new Runnable()
  		{
  			public void run()
  			{
  				if (!background)
  					plug.startProgress();
  				plug.notifyEventListeners(new GUIComputationEvent(GUIComputationEvent.COMPUTATION_START, plug));
  				if (!background)
  					plug.setTaskBarText("Parsing model...");
  			}
  		});
  
  		// do parsing
  		try {
  			// normal prism mode
  			if (!isPepa) {
  				if (!background)
  					plug.log("\nParsing model...\n");
  				mod = prism.parseModelString(parseThis);
  			}
  			// pepa mode
  			else {
  				if (!background)
  					plug.log("\nParsing PEPA model...\n");
  				mod = prism.importPepaString(parseThis);
  			}
  			// Load into PRISM once done
  			prism.loadPRISMModel(mod);
  		} catch (PrismException err) {
  			parseError = err;
  			errMsg = err.getMessage();
  			SwingUtilities.invokeLater(new Runnable()
  			{
  				public void run()
  				{
  					if (!background)
  						plug.stopProgress();
  					plug.notifyEventListeners(new GUIComputationEvent(GUIComputationEvent.COMPUTATION_ERROR, plug));
  					if (!background)
  						plug.setTaskBarText("Parsing model... error.");
  					if (!background)
  						error(errMsg);
  					handler.modelParseFailed(parseError, background);
  				}
  			});
  			return;
  		}
  
  		// If we get here, the parse has been successful, notify the interface and tell the handler.
  		SwingUtilities.invokeLater(new Runnable()
  		{
  			public void run()
  			{
  				if (!background)
  					plug.stopProgress();
  				if (!background)
  					plug.setTaskBarText("Parsing model... done.");
  				plug.notifyEventListeners(new GUIComputationEvent(GUIComputationEvent.COMPUTATION_DONE, plug));
  				handler.modelParsedSuccessful(mod);
  			}
  		});
  	}
  }
  