bundles/org.eclipse.e4.languages.javascript.debug.ui/src/org/eclipse/e4/languages/internal/javascript/debug/ui/launching/JavascriptSourceLocator.java

/*******************************************************************************
 * Copyright (c) 2009 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
 *******************************************************************************/
package org.eclipse.e4.languages.internal.javascript.debug.ui.launching;

import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.Writer;
import java.util.HashMap;
import java.util.Map;

import org.eclipse.core.runtime.CoreException;
import org.eclipse.debug.core.ILaunchConfiguration;
import org.eclipse.debug.core.model.IPersistableSourceLocator;
import org.eclipse.debug.core.model.IStackFrame;
import org.eclipse.e4.languages.javascript.debug.model.JSDIStackFrame;
import org.eclipse.e4.languages.javascript.jsdi.ScriptReference;
import org.eclipse.e4.languages.javascript.jsdi.StackFrame;

/**
 * 
 */
public class JavascriptSourceLocator implements IPersistableSourceLocator {

	private Map files = new HashMap();

	/* (non-Javadoc)
	 * @see org.eclipse.debug.core.model.IPersistableSourceLocator#getMemento()
	 */
	public String getMemento() throws CoreException {
		// TODO Auto-generated method stub
		return null;
	}

	/* (non-Javadoc)
	 * @see org.eclipse.debug.core.model.IPersistableSourceLocator#initializeDefaults(org.eclipse.debug.core.ILaunchConfiguration)
	 */
	public void initializeDefaults(ILaunchConfiguration configuration) throws CoreException {
		// TODO Auto-generated method stub

	}

	/* (non-Javadoc)
	 * @see org.eclipse.debug.core.model.IPersistableSourceLocator#initializeFromMemento(java.lang.String)
	 */
	public void initializeFromMemento(String memento) throws CoreException {
		// TODO Auto-generated method stub

	}

	/* (non-Javadoc)
	 * @see org.eclipse.debug.core.model.ISourceLocator#getSourceElement(org.eclipse.debug.core.model.IStackFrame)
	 */
	public Object getSourceElement(IStackFrame stackFrame) {
		JSDIStackFrame jsdiStackFrame = (JSDIStackFrame) stackFrame;
		StackFrame underlyingStackFrame = jsdiStackFrame.getUnderlyingStackFrame();
		
		ScriptReference scriptReference = underlyingStackFrame.location().scriptReference();
		String source = scriptReference.source();
		
		File file = (File) files.get(scriptReference);
		if (file != null)
			return file;
		try {
			file = File.createTempFile("" + scriptReference.hashCode(), "js");
			
			FileWriter writer = new FileWriter(file);
			writer.write(source);
			writer.close();
			files.put(scriptReference, file);
			return file;
			
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		
		return null;

	}

}