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/*******************************************************************************
* Copyright (c) 2013, 2018 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.debug.examples.internal.memory.core;
import java.math.BigInteger;
import java.util.ArrayList;
import org.eclipse.core.resources.IMarkerDelta;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.debug.core.DebugEvent;
import org.eclipse.debug.core.DebugException;
import org.eclipse.debug.core.ILaunch;
import org.eclipse.debug.core.model.DebugElement;
import org.eclipse.debug.core.model.IBreakpoint;
import org.eclipse.debug.core.model.IDebugTarget;
import org.eclipse.debug.core.model.IMemoryBlock;
import org.eclipse.debug.core.model.IMemoryBlockExtension;
import org.eclipse.debug.core.model.IMemoryBlockRetrievalExtension;
import org.eclipse.debug.core.model.IProcess;
import org.eclipse.debug.core.model.IThread;
import org.eclipse.debug.examples.internal.memory.MemoryViewSamplePlugin;
import org.eclipse.debug.examples.internal.memory.engine.SampleEngine;
/**
* Abstract Sample debug target
*/
public class SampleDebugTarget extends DebugElement implements IDebugTarget, IMemoryBlockRetrievalExtension {
boolean fTerminate = false;
boolean fSuspend = true;
protected ILaunch fLaunch;
protected SampleEngine fEngine = new SampleEngine();
protected ArrayList<IMemoryBlockExtension> fMemoryBlocks = new ArrayList<>();
protected IThread fThread;
protected boolean fBusy;
/**
* Creates SampleDebugTarget
*
* @param launch the launch this debug target belongs to
*/
public SampleDebugTarget(ILaunch launch) {
super(null);
fLaunch = launch;
fireEvent(new DebugEvent(this, DebugEvent.CREATE));
}
@Override
public IProcess getProcess() {
return null;
}
@Override
public boolean hasThreads() throws DebugException {
return true;
}
@Override
public boolean supportsBreakpoint(IBreakpoint breakpoint) {
return false;
}
@Override
public IDebugTarget getDebugTarget() {
return this;
}
@Override
public ILaunch getLaunch() {
return fLaunch;
}
@Override
public boolean canTerminate() {
return !fTerminate;
}
@Override
public boolean isTerminated() {
return fTerminate;
}
@Override
public void terminate() throws DebugException {
fTerminate = true;
fireEvent(new DebugEvent(this, DebugEvent.TERMINATE));
}
@Override
public boolean canResume() {
return fSuspend && !fTerminate;
}
@Override
public boolean canSuspend() {
return !fSuspend && !fTerminate;
}
@Override
public boolean isSuspended() {
return fSuspend;
}
@Override
public void resume() throws DebugException {
fSuspend = false;
fEngine.resume();
fireEvent(new DebugEvent(this, DebugEvent.RESUME));
}
@Override
public void suspend() throws DebugException {
fSuspend = true;
fireEvent(new DebugEvent(getEngine().getThreads(this)[0], DebugEvent.SUSPEND));
}
@Override
public void breakpointAdded(IBreakpoint breakpoint) {
}
@Override
public void breakpointRemoved(IBreakpoint breakpoint, IMarkerDelta delta) {
}
@Override
public void breakpointChanged(IBreakpoint breakpoint, IMarkerDelta delta) {
}
@Override
public boolean canDisconnect() {
return false;
}
@Override
public void disconnect() throws DebugException {
}
@Override
public boolean isDisconnected() {
return false;
}
@Override
public boolean supportsStorageRetrieval() {
return true;
}
/**
* @return the debug engine
*/
public SampleEngine getEngine() {
return fEngine;
}
/**
* Remove the memory block from this debug session.
*
* @param memBlk
*/
public void removeMemoryBlock(IMemoryBlock memBlk) {
fMemoryBlocks.remove(memBlk);
}
@Override
public IMemoryBlock getMemoryBlock(long startAddress, long length) throws DebugException {
return null;
}
@SuppressWarnings("unchecked")
@Override
public <T> T getAdapter(Class<T> adapter) {
if (adapter == ILaunch.class) {
return (T) getLaunch();
}
return super.getAdapter(adapter);
}
@Override
public IThread[] getThreads() throws DebugException {
if (isTerminated()) {
return new IThread[0];
}
return getEngine().getThreads(this);
}
@Override
public String getName() throws DebugException {
return Messages.SampleDebugTarget_0;
}
@Override
public String getModelIdentifier() {
return MemoryViewSamplePlugin.PLUGIN_ID;
}
@Override
public IMemoryBlockExtension getExtendedMemoryBlock(String expression, Object context) throws DebugException {
// ask debug engine for an address
BigInteger address = getEngine().evaluateExpression(expression, context);
// if address can be evaluated to an address, create memory block
if (address != null) {
IMemoryBlockExtension memoryBlock = new SampleMemoryBlock(this, expression, address);
fMemoryBlocks.add(memoryBlock);
return memoryBlock;
}
// otherwise throw debug exception
IStatus status = new Status(IStatus.ERROR, MemoryViewSamplePlugin.PLUGIN_ID, 0, Messages.SampleDebugTarget_1, null);
DebugException exception = new DebugException(status);
throw exception;
}
}
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