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/*******************************************************************************
* Copyright (c) 2007, 2010 Wind River Systems, Inc. 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:
* Wind River Systems - initial API and implementation
*******************************************************************************/
package org.eclipse.tcf.internal.debug.ui.commands;
import java.util.HashSet;
import java.util.Set;
import org.eclipse.core.runtime.Status;
import org.eclipse.debug.core.commands.IDebugCommandHandler;
import org.eclipse.debug.core.commands.IDebugCommandRequest;
import org.eclipse.debug.core.commands.IEnabledStateRequest;
import org.eclipse.tcf.internal.debug.model.TCFContextState;
import org.eclipse.tcf.internal.debug.ui.model.TCFModel;
import org.eclipse.tcf.internal.debug.ui.model.TCFNode;
import org.eclipse.tcf.internal.debug.ui.model.TCFNodeExecContext;
import org.eclipse.tcf.internal.debug.ui.model.TCFRunnable;
import org.eclipse.tcf.services.IRunControl;
import org.eclipse.tcf.util.TCFDataCache;
abstract class StepCommand implements IDebugCommandHandler {
private static final int MAX_ACTION_CNT = 4;
protected final TCFModel model;
public StepCommand(TCFModel model) {
this.model = model;
}
protected abstract boolean canExecute(IRunControl.RunControlContext ctx);
protected abstract void execute(IDebugCommandRequest monitor,
IRunControl.RunControlContext ctx, boolean src_step, Runnable done);
private boolean getContextSet(boolean exec, Object[] elements, Set<IRunControl.RunControlContext> set, Runnable done) {
for (int i = 0; i < elements.length; i++) {
TCFNode node = null;
if (elements[i] instanceof TCFNode) node = (TCFNode)elements[i];
else node = model.getRootNode();
while (node != null && !node.isDisposed()) {
IRunControl.RunControlContext ctx = null;
if (node instanceof TCFNodeExecContext) {
TCFDataCache<IRunControl.RunControlContext> cache = ((TCFNodeExecContext)node).getRunContext();
if (!cache.validate(done)) return false;
ctx = cache.getData();
}
if (ctx == null) {
node = node.getParent();
}
else {
if (!canExecute(ctx)) break;
int action_cnt = model.getLaunch().getContextActionsCount(ctx.getID());
if (exec && action_cnt >= MAX_ACTION_CNT) break;
if (action_cnt > 0) {
set.add(ctx);
}
else {
if (ctx.isContainer()) {
TCFNodeExecContext.ChildrenStateInfo s = new TCFNodeExecContext.ChildrenStateInfo();
if (!((TCFNodeExecContext)node).hasSuspendedChildren(s, done)) return false;
if (s.suspended || s.not_active) set.add(ctx);
}
if (ctx.hasState()) {
TCFDataCache<TCFContextState> state_cache = ((TCFNodeExecContext)node).getState();
if (!state_cache.validate(done)) return false;
TCFContextState state_data = state_cache.getData();
if (state_data != null && state_data.is_suspended) set.add(ctx);
}
}
break;
}
}
}
return true;
}
public final void canExecute(final IEnabledStateRequest monitor) {
new TCFRunnable(monitor) {
public void run() {
if (done) return;
if (!monitor.isCanceled()) {
Set<IRunControl.RunControlContext> set = new HashSet<IRunControl.RunControlContext>();
if (!getContextSet(false, monitor.getElements(), set, this)) return;
monitor.setEnabled(set.size() > 0);
monitor.setStatus(Status.OK_STATUS);
}
done();
}
};
}
public final boolean execute(final IDebugCommandRequest monitor) {
new TCFRunnable(monitor) {
public void run() {
if (done) return;
Set<IRunControl.RunControlContext> set = new HashSet<IRunControl.RunControlContext>();
if (!getContextSet(true, monitor.getElements(), set, this)) return;
if (set.size() == 0) {
monitor.setStatus(Status.OK_STATUS);
monitor.done();
}
else {
final Set<Runnable> wait_list = new HashSet<Runnable>();
for (IRunControl.RunControlContext ctx : set) {
Runnable done = new Runnable() {
public void run() {
wait_list.remove(this);
if (wait_list.isEmpty()) monitor.done();
}
};
wait_list.add(done);
execute(monitor, ctx, !model.isInstructionSteppingEnabled(), done);
}
}
}
};
return true;
}
}
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