/*******************************************************************************
* 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
* Zend Technologies
*******************************************************************************/
package org.eclipse.php.internal.debug.core.zend.model;
import org.eclipse.debug.core.DebugException;
import org.eclipse.debug.core.model.IBreakpoint;
import org.eclipse.debug.core.model.IStackFrame;
import org.eclipse.debug.core.model.IThread;
import org.eclipse.php.internal.debug.core.model.PHPDebugElement;
import org.eclipse.php.internal.debug.core.zend.debugger.Expression;
/**
* A PHP debugger threaded.
*/
public class PHPThread extends PHPDebugElement implements IThread {
private static final Expression[] NO_VARIABLES = {};
/**
* Breakpoints this thread is suspended at or <code>null</code> if none.
*/
private IBreakpoint[] fBreakpoints;
/**
* Whether this thread is stepping
*/
private boolean fStepping = false;
/**
* Constructs a new thread for the given target
*
* @param target
* VM
*/
public PHPThread(PHPDebugTarget target) {
super(target);
}
public IStackFrame[] getStackFrames() throws DebugException {
if (isSuspended()) {
return ((PHPDebugTarget) getDebugTarget()).getStackFrames();
} else {
return new IStackFrame[0];
}
}
/*
* (non-Javadoc)
*
* @see org.eclipse.debug.core.model.IThread#hasStackFrames()
*/
public boolean hasStackFrames() throws DebugException {
return isSuspended();
}
/*
* (non-Javadoc)
*
* @see org.eclipse.debug.core.model.IThread#getPriority()
*/
public int getPriority() throws DebugException {
return 0;
}
/*
* (non-Javadoc)
*
* @see org.eclipse.debug.core.model.IThread#getTopStackFrame()
*/
public IStackFrame getTopStackFrame() throws DebugException {
IStackFrame[] frames = getStackFrames();
if (frames.length > 0) {
return frames[0];
}
return null;
}
/*
* (non-Javadoc)
*
* @see org.eclipse.debug.core.model.IThread#getName()
*/
public String getName() throws DebugException {
return "PHPthread"; //$NON-NLS-1$
}
/*
* (non-Javadoc)
*
* @see org.eclipse.debug.core.model.IThread#getBreakpoints()
*/
public IBreakpoint[] getBreakpoints() {
if (fBreakpoints == null) {
return new IBreakpoint[0];
}
return fBreakpoints;
}
/**
* Sets the breakpoints this thread is suspended at, or <code>null</code> if
* none.
*
* @param breakpoints
* the breakpoints this thread is suspended at, or
* <code>null</code> if none
*/
protected void setBreakpoints(IBreakpoint[] breakpoints) {
fBreakpoints = breakpoints;
}
/*
* (non-Javadoc)
*
* @see org.eclipse.debug.core.model.ISuspendResume#canResume()
*/
public boolean canResume() {
return isSuspended();
}
/*
* (non-Javadoc)
*
* @see org.eclipse.debug.core.model.ISuspendResume#canSuspend()
*/
public boolean canSuspend() {
return !isSuspended();
}
/*
* (non-Javadoc)
*
* @see org.eclipse.debug.core.model.ISuspendResume#isSuspended()
*/
public boolean isSuspended() {
return getDebugTarget().isSuspended();
}
/*
* (non-Javadoc)
*
* @see org.eclipse.debug.core.model.ISuspendResume#resume()
*/
public void resume() throws DebugException {
setStepping(false);
getDebugTarget().resume();
}
/*
* (non-Javadoc)
*
* @see org.eclipse.debug.core.model.ISuspendResume#suspend()
*/
public void suspend() throws DebugException {
setStepping(false);
getDebugTarget().suspend();
}
/*
* (non-Javadoc)
*
* @see org.eclipse.debug.core.model.IStep#canStepInto()
*/
public boolean canStepInto() {
return isSuspended();
}
/*
* (non-Javadoc)
*
* @see org.eclipse.debug.core.model.IStep#canStepOver()
*/
public boolean canStepOver() {
return isSuspended();
}
/*
* (non-Javadoc)
*
* @see org.eclipse.debug.core.model.IStep#canStepReturn()
*/
public boolean canStepReturn() {
return isSuspended();
}
/*
* (non-Javadoc)
*
* @see org.eclipse.debug.core.model.IStep#isStepping()
*/
public boolean isStepping() {
return fStepping;
}
/*
* (non-Javadoc)
*
* @see org.eclipse.debug.core.model.IStep#stepInto()
*/
public void stepInto() throws DebugException {
setStepping(true);
((PHPDebugTarget) getDebugTarget()).stepInto();
}
/*
* (non-Javadoc)
*
* @see org.eclipse.debug.core.model.IStep#stepOver()
*/
public void stepOver() throws DebugException {
setStepping(true);
((PHPDebugTarget) getDebugTarget()).stepOver();
}
/*
* (non-Javadoc)
*
* @see org.eclipse.debug.core.model.IStep#stepReturn()
*/
public void stepReturn() throws DebugException {
setStepping(true);
((PHPDebugTarget) getDebugTarget()).stepReturn();
}
/*
* (non-Javadoc)
*
* @see org.eclipse.debug.core.model.ITerminate#canTerminate()
*/
public boolean canTerminate() {
return !isTerminated();
}
/*
* (non-Javadoc)
*
* @see org.eclipse.debug.core.model.ITerminate#isTerminated()
*/
public boolean isTerminated() {
return getDebugTarget().isTerminated();
}
/*
* (non-Javadoc)
*
* @see org.eclipse.debug.core.model.ITerminate#terminate()
*/
public void terminate() throws DebugException {
getDebugTarget().terminate();
}
/**
* Sets whether this thread is stepping
*
* @param stepping
* whether stepping
*/
public void setStepping(boolean stepping) {
fStepping = stepping;
}
// Future method for desplaying error from the debugger client.
public Object getError() {
return null;
}
public Expression[] getStackVariables() throws DebugException {
IStackFrame frame = getTopStackFrame();
if (frame == null) {
return NO_VARIABLES;
}
Expression[] stackVariables = ((PHPStackFrame) frame)
.getStackVariables();
if (stackVariables == null) {
return NO_VARIABLES;
}
return stackVariables;
}
}