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/*******************************************************************************
* Copyright (c) 2012 Rohit Agrawal
* 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:
* Rohit Agrawal (initial contribution)
*
*******************************************************************************/
package org.eclipse.etrice.abstractexec.behavior;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import org.eclipse.emf.common.util.TreeIterator;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.etrice.abstractexec.behavior.util.AbstractExecutionRuntimeModule;
import org.eclipse.etrice.abstractexec.behavior.util.AbstractExecutionUtil;
import org.eclipse.etrice.core.common.validation.ICustomValidator;
import org.eclipse.etrice.core.fsm.fSM.FSMPackage;
import org.eclipse.etrice.core.fsm.fSM.ModelComponent;
import org.eclipse.etrice.core.genmodel.fsm.ExtendedFsmGenBuilder;
import org.eclipse.etrice.core.genmodel.fsm.FsmGenChecker;
import org.eclipse.etrice.core.genmodel.fsm.FsmGenExtensions;
import org.eclipse.etrice.core.genmodel.fsm.NullDiagnostician;
import org.eclipse.etrice.core.genmodel.fsm.NullLogger;
import org.eclipse.etrice.core.genmodel.fsm.fsmgen.GraphContainer;
import org.eclipse.etrice.core.genmodel.fsm.fsmgen.GraphItem;
import org.eclipse.etrice.core.genmodel.fsm.fsmgen.Link;
import org.eclipse.etrice.core.genmodel.fsm.fsmgen.Node;
import org.eclipse.xtext.validation.ValidationMessageAcceptor;
import com.google.inject.Guice;
import com.google.inject.Injector;
public class ReachabilityValidator implements ICustomValidator {
public static final String DIAG_CODE_UNREACHABLE = "etrice.unreachable";
private static final Set<EClass> classesToCheck = new HashSet<EClass>();
{
classesToCheck.add(FSMPackage.Literals.MODEL_COMPONENT);
}
@Override
public void validate(EObject object, ValidationMessageAcceptor messageAcceptor, ICustomValidator.ValidationContext context) {
if (!(object instanceof ModelComponent))
return;
if (context.isGeneration())
return;
ModelComponent mc = (ModelComponent) object;
if (mc.isAbstract())
return;
if (AbstractExecutionUtil.getInstance().getRoomHelpers().isCircularClassHierarchy(mc))
// is checked elsewhere
return;
Injector injector = Guice.createInjector(new AbstractExecutionRuntimeModule());
NullDiagnostician diagnostician = new NullDiagnostician();
ExtendedFsmGenBuilder builder = new ExtendedFsmGenBuilder(injector, diagnostician);
GraphContainer gc;
try {
gc = builder.createTransformedModel(mc);
NullLogger logger = new NullLogger();
FsmGenChecker.check(gc, logger);
if (logger.hasErrors()) {
return;
}
builder.withTriggersInStates(gc);
}
catch (Throwable t) {
return;
}
if (gc != null && gc.getGraph()!=null && !diagnostician.isFailed()) {
ReachabilityCheck checker = new ReachabilityCheck(gc);
checker.computeReachability();
TreeIterator<EObject> it = gc.eAllContents();
while (it.hasNext()) {
EObject item = it.next();
if (item instanceof GraphItem)
{
GraphItem toCheck = (GraphItem) item;
if (!checker.isReachable(toCheck)) {
String name = FsmGenExtensions.getName(toCheck);
if (name==null) {
name = "<no name>";
}
EObject stateGraphItem = (toCheck instanceof Node) ?
((Node) toCheck).getStateGraphNode() : ((Link) toCheck).getTransition();
EObject container = stateGraphItem.eContainer();
@SuppressWarnings("unchecked")
int idx = ((List<? extends EObject>)container.eGet(stateGraphItem.eContainingFeature())).indexOf(stateGraphItem);
messageAcceptor.acceptWarning(
"Unreachable state/point of graph",
stateGraphItem.eContainer(), stateGraphItem.eContainingFeature(), idx,
DIAG_CODE_UNREACHABLE, name);
}
}
}
}
}
@Override
public String getName() {
return "State Reachability Validator";
}
@Override
public String getDescription() {
return "This validator checks the reachability of state graph items.";
}
@Override
public Set<EClass> getClassesToCheck() {
return classesToCheck;
}
}
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