Home » Modeling » TMF (Xtext) » 2.0->2.1 upgrade scopeprovider no longer called
| 2.0->2.1 upgrade scopeprovider no longer called [message #764583] |
Mon, 12 December 2011 13:28  |
 gary s thompson
Messages: 92
Registered: July 2009 |
Member |
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Dear all
i have upgraded from xtext 2.0 -> xtext 2.1 after a number of attempts, but, i am having problems as my scopeprovider is longer being called (even though when I generated a new project a stub was created) does anyone have any thoughts?
regards
gary
nb here is he scope provider
package uk.ac.leeds.nsxl2.cork4.scoping;
/*
* generated by Xtext
*/
import java.util.ArrayList;
import java.util.List;
import memops.ecore_api.Implementation.ImplementationPackage;
import org.eclipse.emf.common.util.EList;
import org.eclipse.emf.common.util.TreeIterator;
import org.eclipse.emf.ecore.EAttribute;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.EClassifier;
import org.eclipse.emf.ecore.EDataType;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EReference;
import org.eclipse.emf.ecore.EStructuralFeature;
import org.eclipse.emf.ecore.EcorePackage;
import org.eclipse.emf.ecore.util.EcoreUtil;
import org.eclipse.xtext.common.types.JvmDeclaredType;
import org.eclipse.xtext.common.types.JvmFormalParameter;
import org.eclipse.xtext.common.types.TypesPackage;
import org.eclipse.xtext.resource.EObjectDescription;
import org.eclipse.xtext.resource.IEObjectDescription;
import org.eclipse.xtext.scoping.IScope;
import org.eclipse.xtext.scoping.IScopeProvider;
import org.eclipse.xtext.scoping.Scopes;
import org.eclipse.xtext.scoping.impl.AbstractDeclarativeScopeProvider;
import org.eclipse.xtext.scoping.impl.AbstractScope;
import org.eclipse.xtext.scoping.impl.SimpleLocalScopeProvider;
import org.eclipse.xtext.scoping.impl.SimpleScope;
import org.eclipse.xtext.xbase.XForLoopExpression;
import org.eclipse.xtext.xbase.XbasePackage;
import org.eclipse.xtext.xbase.scoping.LocalVariableScopeContext;
import org.eclipse.xtext.xbase.scoping.XbaseScopeProvider;
import com.google.inject.internal.Lists;
import uk.ac.leeds.nsxl2.cork4.cork4.Axis;
import uk.ac.leeds.nsxl2.cork4.cork4.Cork4Package;
import uk.ac.leeds.nsxl2.cork4.cork4.Loop;
import uk.ac.leeds.nsxl2.cork4.cork4.PathHead;
import uk.ac.leeds.nsxl2.cork4.cork4.Predicate;
import uk.ac.leeds.nsxl2.cork4.cork4.RelativeLocationPathHead;
import uk.ac.leeds.nsxl2.cork4.cork4.RelativeLocationPathTail;
import uk.ac.leeds.nsxl2.cork4.cork4.Step;
/**
* This class contains custom scoping description.
*
* see : http://www.eclipse.org/Xtext/documentation/latest/xtext.html#scoping on
* how and when to use it
*
*/
public class Cork4ScopeProvider extends XbaseScopeProvider {
private final static Class<?>[] SCOPE_CONTAINER_TYPES = { RelativeLocationPathTail.class,
RelativeLocationPathHead.class,
PathHead.class};
private final static Class<?>[] PATH_ELEMENT_STEP_CONTAINER_TYPES = { RelativeLocationPathTail.class,
RelativeLocationPathHead.class,
Predicate.class};
@Override
public IScope getScope(EObject context, EReference reference) {
final Cork4Package CORK_EPACKAGE = Cork4Package.eINSTANCE;
final EClass STEP_ECLASS = CORK_EPACKAGE.getStep();
final EClass PATH_HEAD_ECLASS = CORK_EPACKAGE.getPathHead();
final EClass RELATIVE_LOCATION_PATH_HEAD_ECLASS = CORK_EPACKAGE.getRelativeLocationPathHead();
final EClass RELATIVE_LOCATION_PATH_TAIL_ECLASS = CORK_EPACKAGE.getRelativeLocationPathTail();
final EClass LOOP = CORK_EPACKAGE.getLoop();
final EClass PATH_DEFINITION = CORK_EPACKAGE.getPathDefinition();
final TypesPackage TYPES_PACKAGE =TypesPackage.eINSTANCE;
final EClass JVM_DECLARED_TYPE = TYPES_PACKAGE.getJvmDeclaredType();
final XbasePackage X_BASE_PACKAGE = XbasePackage.eINSTANCE;
final EClass X_FEATURE_CALL = X_BASE_PACKAGE.getXFeatureCall();
reportScopeContext(context, reference);
IScope result = null;
EClass referenceContext = (EClass) reference.eContainer();
if (referenceContext.equals(STEP_ECLASS)) {
EObject container = findScopeContainer(context);
StepAxis stepAxis = getStepAxis(context);
if (sameClass(container, PATH_HEAD_ECLASS)) {
result = getScopeForPathHead(stepAxis);
} else if (sameClass(container, RELATIVE_LOCATION_PATH_TAIL_ECLASS)) {
RelativeLocationPathTail pathTail = (RelativeLocationPathTail) container;
result=getScopeForRelativeLocationPathTail(pathTail, stepAxis);
} else if (sameClass(container, RELATIVE_LOCATION_PATH_HEAD_ECLASS)) {
RelativeLocationPathHead relativeLocationPathHead = (RelativeLocationPathHead) container;
result = getScopeForRelativeLocationPathHead((relativeLocationPathHead), stepAxis);
}
}
// System.err.println(context);
// if (sameClass(context, LOOP) && reference.getEReferenceType().equals(JVM_DECLARED_TYPE)) {
// Loop loop = (Loop) context;
//
// System.err.println(references(PATH_DEFINITION));
// result = getGlobalScopeForReference(PATH_DEFINITION);
// System.err.println("here " + reference.getEReferenceType());
// System.err.println(loop.getPathSelection());
// }
if (result == null) {
result = super.getScope(context, reference);
}
return result;
}
private StepAxis getStepAxis(EObject context) {
final Cork4Package CORK_EPACKAGE = Cork4Package.eINSTANCE;
final EClass STEP_ECLASS = CORK_EPACKAGE.getStep();
final EClass RELATIVE_LOCATION_PATH_TAIL_ECLASS = CORK_EPACKAGE.getRelativeLocationPathTail();
Axis axis = null;
if (context.eClass().equals(STEP_ECLASS)) {
Step step = (Step) context;
axis = step.getAxis();
} else if (context.eClass().equals(RELATIVE_LOCATION_PATH_TAIL_ECLASS)) {
RelativeLocationPathTail relativeLocationPathTail = (RelativeLocationPathTail) context;
Step step = relativeLocationPathTail.getStep();
if (step != null) {
axis = step.getAxis();
}
}
StepAxis stepAxis = StepAxis.REFERENCE;
if (axis != null){
String axisValue = axis.getValue();
if (axisValue.equals("@")){
stepAxis = StepAxis.ATTRIBUTE;
}
}
return stepAxis;
}
private boolean sameClass(EObject container, EClass eClass) {
return container.eClass().equals(eClass);
}
private EObject findScopeContainer(EObject context) {
EObject stepContainer = findParentByTypesOrdered(context, PATH_ELEMENT_STEP_CONTAINER_TYPES);
EObject scopeContainer = findParentByTypesOrdered(stepContainer.eContainer(), SCOPE_CONTAINER_TYPES);
if (scopeContainer != null) {
stepContainer = scopeContainer;
}
return stepContainer;
}
private IScope getScopeForRelativeLocationPathTail(
RelativeLocationPathTail container, StepAxis stepAxis) {
EStructuralFeature tailReference = container.getStep()
.getNodeTest();
IScope result = getScopeFromReference(tailReference, stepAxis);
return result;
}
private IScope getScopeForRelativeLocationPathHead( RelativeLocationPathHead container, StepAxis stepAxis) {
EStructuralFeature tailReference = (EStructuralFeature) container.getStep()
.getNodeTest();
IScope result = getScopeFromReference(tailReference, stepAxis);
return result;
}
enum StepAxis {
ATTRIBUTE,
REFERENCE,
OPERATION
}
private IScope getScopeForPathHead(StepAxis stepAxis) {
EClass root = ImplementationPackage.eINSTANCE.getMemopsRoot();
IScope result = null;
List<? extends EObject> structuralFeatures = references(root);
switch (stepAxis) {
case REFERENCE:
structuralFeatures = references(root);
result = Scopes.scopeFor(structuralFeatures);
break;
case ATTRIBUTE:
structuralFeatures = attributes(root);
result = Scopes.scopeFor(structuralFeatures);
break;
}
return result;
}
private void reportScopeContext(EObject context, EReference reference) {
IScopeProvider delegate = (IScopeProvider) getDelegate();
// IScope parentScope = getScope(context, reference);
EObject parent = context.eContainer();
System.err.println("---------\n");
System.err.println("containers" + " " + listContainers(context));
System.err.println("context: " + context);
EClass refContainer = (EClass) reference.eContainer();
System.err.println("ref: " + refContainer.getInstanceClassName() + "->"
+ reference.getName());
System.err.println("parent: " + parent);
System.err.println("delegate: " + delegate);
// System.err.println("parent scope " + parentScope);
System.err.println();
}
private IScope getScopeFromReference(EStructuralFeature tailReference, StepAxis stepAxis) {
EClassifier tailType = tailReference.getEType();
IScope result = null;
if (tailType instanceof EClass) {
EClass referenceType = (EClass) tailType;
if (stepAxis == StepAxis.REFERENCE) {
result = getGlobalScopeForReference(referenceType);
} else if (stepAxis == StepAxis.ATTRIBUTE) {
List<EAttribute> attributes = attributes(referenceType);
result = Scopes.scopeFor(attributes);
}
}
return result;
}
private IScope getGlobalScopeForReference(EClass referenceType) {
IScope result;
List<EReference> references = references(referenceType);
result = Scopes.scopeFor(references);
return result;
}
@SuppressWarnings("unchecked")
private <T extends EObject> T findParentByTypesOrdered(EObject context,
Class<?>[] parentTypeList) {
T result = null;
EObject parent = context;
while (parent.eContainer() != null) {
for (Class<?> clazz : parentTypeList) {
if (clazz.isAssignableFrom(parent.getClass())) {
result = (T) parent;
break;
}
}
if (result != null) {
break;
} else {
parent = parent.eContainer();
}
}
return result;
}
private String listContainers(EObject parentPath) {
String result = "";
EObject parent = parentPath;
while (parent.eContainer() != null) {
result = result + " " + parent.eClass().getName();
parent = parent.eContainer();
}
return result;
}
private List<EReference> references(EClass target) {
return org.eclipse.xtext.EcoreUtil2.typeSelect(
target.getEAllReferences(), EReference.class);
}
private List<EAttribute> attributes(EClass target) {
return org.eclipse.xtext.EcoreUtil2.typeSelect(
target.getEAllAttributes(), EAttribute.class);
}
@SuppressWarnings("restriction")
@Override
protected IScope createLocalVarScope(IScope parentScope, LocalVariableScopeContext scopeContext) {
IScope result = null;
EObject context = scopeContext.getContext();
EReference reference = scopeContext.getReference();
System.err.println("local var scope");
System.err.println("context " + context);
System.err.println("reference " + reference);
if (context.eContainer() instanceof Loop && context.eContainingFeature() == Cork4Package.Literals.LOOP__EXPRESSION) {
Loop loop = (Loop) context.eContainer();
JvmFormalParameter type = loop.getPathSelection().getType();
parentScope = createLocalScopeForParameter(type, parentScope);
}
// final CorkPackage CORK_EPACKAGE = CorkPackage.eINSTANCE;
// final EClass LOOP = CORK_EPACKAGE.getLoop();
// List<IEObjectDescription> eObjectDescriptions1 = Lists.newArrayList();
// if(sameClass(context, LOOP)) {
// Loop loop = (Loop) context;
// // if(loop.getPathSelection() != null) {
// // String selectionName = loop.getPathSelection().getName();
// // RelativeLocationPathTail path = loop.getPathSelection().getPathDefinition().getHead().getTail();
// // System.err.println("start");
// // EStructuralFeature type = getTailType(path);
// // IEObjectDescription eObjectDescription = EObjectDescription.create(selectionName, type.getEType());
// // eObjectDescriptions.add(eObjectDescription);
// // System.err.println(type);
// // System.err.println("here");
// // }
// }
// List<IEObjectDescription> eObjectDescriptions = eObjectDescriptions1;
//
// if (eObjectDescriptions.size() > 0) {
// result = new SimpleScope(parent, eObjectDescriptions);
// }
// if (context.eContainer() instanceof Loop/*referenceContext.equals(X_FEATURE_CALL)*/) {
// Loop containerloop = context.eContainer();
//
// }
//
// System.err.println(result);
// if (result == null) {
// result = super.createLocalVarScope(parentScope, scopeContext);
// }
return parentScope;
}
private EStructuralFeature getTailType(RelativeLocationPathTail path) {
final Cork4Package CORK_EPACKAGE = Cork4Package.eINSTANCE;
final EClass PREDICATE = CORK_EPACKAGE.getPredicate();
final EClass STEP = CORK_EPACKAGE.getStep();
final EClass RELATIVE_LOCATION_PATH_HEAD_ECLASS = CORK_EPACKAGE.getRelativeLocationPathHead();
final EClass RELATIVE_LOCATION_PATH_TAIL_ECLASS = CORK_EPACKAGE.getRelativeLocationPathTail();
EStructuralFeature type = null;
for ( TreeIterator<Object> iter = EcoreUtil.getAllContents(path,false);
iter.hasNext(); ) {
EObject current = (EObject) iter.next();
if (sameClass(current, PREDICATE)) {
iter.prune();
}
if(sameClass(current, STEP)) {
Step stepCurrent = (Step) current;
EObject parent = current.eContainer();
boolean hasChildren = false;
if (sameClass(parent, RELATIVE_LOCATION_PATH_HEAD_ECLASS)) {
RelativeLocationPathHead parentRelativeLocationPathHead = (RelativeLocationPathHead) parent;
if (parentRelativeLocationPathHead.getTail() != null) {
hasChildren = true;
}
}
if (sameClass(parent, RELATIVE_LOCATION_PATH_TAIL_ECLASS)) {
RelativeLocationPathTail parentRelativeLocationPathTail = (RelativeLocationPathTail) parent;
if (parentRelativeLocationPathTail.getTail() != null) {
hasChildren = true;
}
}
if (!hasChildren) {
EReference nodeTest = (EReference) stepCurrent.getNodeTest();
type = nodeTest;
break;
}
}
}
return type;
}
}
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| Re: 2.0->2.1 upgrade scopeprovider no longer called [message #764761 is a reply to message #764583] |
Mon, 12 December 2011 20:02  |
|
You have to bind it in your runtime module. Most likely you are using Xbase, and Xtext binds just the XbaseScopeProvider. Yours should derive from XbaseScopeProvider then.
public Class<? extends IScopeProvider> bindIScopeProvider () { return MyScopeProvider.class; }
~Karsten
Need professional support for Xtext, EMF, Eclipse IDE?
Go to: http://devhub.karakun.com
Twitter : @kthoms
Blog : www.karsten-thoms.de
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