bundles/org.eclipse.e4.languages.javascript.debug/src/org/eclipse/e4/languages/javascript/debug/model/JSDIStackFrame.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.javascript.debug.model;

import org.eclipse.debug.core.DebugException;
import org.eclipse.debug.core.model.IRegisterGroup;
import org.eclipse.debug.core.model.IStackFrame;
import org.eclipse.debug.core.model.IThread;
import org.eclipse.debug.core.model.IVariable;
import org.eclipse.e4.languages.javascript.jsdi.StackFrame;
import org.eclipse.osgi.util.NLS;

/**
 * A JSDI stack frame
 * 
 * @since 1.0
 */
public class JSDIStackFrame extends JSDIDebugElement implements IStackFrame {

	/**
	 * Owning thread.
	 */
	private JSDIThread thread;

	/**
	 * The underlying {@link StackFrame}
	 */
	private StackFrame stackframe = null;

	/**
	 * Name cache
	 */
	private String name = null;

	/**
	 * Constructs a Rhino stack frame in the given thread.
	 * 
	 * @param thread
	 */
	public JSDIStackFrame(JSDIThread thread, StackFrame stackFrame) {
		super(thread.getJSDITarget());
		this.thread = thread;
		this.stackframe = stackFrame;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.debug.core.model.IStackFrame#getCharEnd()
	 */
	public int getCharEnd() throws DebugException {
		return -1;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.debug.core.model.IStackFrame#getCharStart()
	 */
	public int getCharStart() throws DebugException {
		return -1;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.debug.core.model.IStackFrame#getLineNumber()
	 */
	public int getLineNumber() throws DebugException {
		return (stackframe.location() != null ? stackframe.location().lineNumber() : -1);
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.debug.core.model.IStackFrame#getName()
	 */
	public String getName() throws DebugException {
		if (name == null) {
			name = stackframe.location().functionName();
			if (name == null) {
				NLS.bind(ModelMessages.JSDIStackFrame_stackframe_name, new String[] { stackframe.location().scriptReference().source(), Integer.toString(stackframe.location().lineNumber()) });
			}
		}
		return name;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.debug.core.model.IStackFrame#getRegisterGroups()
	 */
	public IRegisterGroup[] getRegisterGroups() throws DebugException {
		return null;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.debug.core.model.IStackFrame#getThread()
	 */
	public IThread getThread() {
		return thread;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.debug.core.model.IStackFrame#getVariables()
	 */
	public IVariable[] getVariables() throws DebugException {
		return (IVariable[]) stackframe.variables().toArray(new IVariable[stackframe.variables().size()]);
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.debug.core.model.IStackFrame#hasRegisterGroups()
	 */
	public boolean hasRegisterGroups() throws DebugException {
		return false;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.debug.core.model.IStackFrame#hasVariables()
	 */
	public boolean hasVariables() throws DebugException {
		return stackframe.variables().size() > 0;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.debug.core.model.IStep#canStepInto()
	 */
	public boolean canStepInto() {
		return thread.canStepInto();
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.debug.core.model.IStep#canStepOver()
	 */
	public boolean canStepOver() {
		return thread.canStepOver();
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.debug.core.model.IStep#canStepReturn()
	 */
	public boolean canStepReturn() {
		return thread.canStepReturn();
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.debug.core.model.IStep#isStepping()
	 */
	public boolean isStepping() {
		return thread.isStepping();
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.debug.core.model.IStep#stepInto()
	 */
	public void stepInto() throws DebugException {
		thread.stepInto();
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.debug.core.model.IStep#stepOver()
	 */
	public void stepOver() throws DebugException {
		thread.stepOver();
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.debug.core.model.IStep#stepReturn()
	 */
	public void stepReturn() throws DebugException {
		thread.stepReturn();
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.debug.core.model.ISuspendResume#canResume()
	 */
	public boolean canResume() {
		return thread.canResume();
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.debug.core.model.ISuspendResume#canSuspend()
	 */
	public boolean canSuspend() {
		return thread.canSuspend();
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.debug.core.model.ISuspendResume#isSuspended()
	 */
	public boolean isSuspended() {
		return thread.isSuspended();
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.debug.core.model.ISuspendResume#resume()
	 */
	public void resume() throws DebugException {
		thread.resume();
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.debug.core.model.ISuspendResume#suspend()
	 */
	public void suspend() throws DebugException {
		thread.suspend();
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.debug.core.model.ITerminate#canTerminate()
	 */
	public boolean canTerminate() {
		return thread.canTerminate();
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.debug.core.model.ITerminate#isTerminated()
	 */
	public boolean isTerminated() {
		return thread.isTerminated();
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.debug.core.model.ITerminate#terminate()
	 */
	public void terminate() throws DebugException {
		if (thread.canTerminate()) {
			thread.terminate();
		} else {
			getJSDITarget().terminate();
		}
	}

}