/*******************************************************************************
 * Copyright (c) 2005, 2007 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials 
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *     Bjorn Freeman-Benson - initial API and implementation
 *******************************************************************************/
package org.eclipse.debug.examples.core.pda.sourcelookup;

import org.eclipse.core.runtime.CoreException;
import org.eclipse.debug.core.sourcelookup.AbstractSourceLookupParticipant;
import org.eclipse.debug.examples.core.pda.model.PDAStackFrame;


/**
 * The PDA source lookup participant knows how to translate a 
 * PDA stack frame into a source file name 
 */
public class PDASourceLookupParticipant extends AbstractSourceLookupParticipant {
	/* (non-Javadoc)
	 * @see org.eclipse.debug.internal.core.sourcelookup.ISourceLookupParticipant#getSourceName(java.lang.Object)
	 */
	public String getSourceName(Object object) throws CoreException {
		//#ifdef ex4
//#		// TODO: Exercise 4 - return the name of the source file for the given stack frame
//#		return null;		
		//#else
		if (object instanceof PDAStackFrame) {
			return ((PDAStackFrame)object).getSourceName();
		}
		return null;
		//#endif
	}
}