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/*
* generated by Xtext 2.10.0
*/
package org.etsi.mts.tdl.scoping;
import org.eclipse.emf.common.util.BasicEList;
import org.eclipse.emf.common.util.EList;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EReference;
import org.eclipse.xtext.scoping.IScope;
import org.eclipse.xtext.scoping.Scopes;
import org.eclipse.xtext.scoping.impl.AbstractDeclarativeScopeProvider;
import org.etsi.mts.tdl.DataInstance;
import org.etsi.mts.tdl.DataInstanceUse;
import org.etsi.mts.tdl.DataType;
import org.etsi.mts.tdl.ElementImport;
import org.etsi.mts.tdl.Package;
import org.etsi.mts.tdl.PackageableElement;
import org.etsi.mts.tdl.structuredobjectives.Entity;
import org.etsi.mts.tdl.structuredobjectives.EntityReference;
import org.etsi.mts.tdl.structuredobjectives.Event;
import org.etsi.mts.tdl.structuredobjectives.EventReference;
import org.etsi.mts.tdl.structuredobjectives.EventSpecificationTemplate;
import org.etsi.mts.tdl.structuredobjectives.LiteralValue;
/**
* This class contains custom scoping description.
*
* See https://www.eclipse.org/Xtext/documentation/303_runtime_concepts.html#scoping
* on how and when to use it.
*/
public class TPLan2ScopeProvider extends AbstractDeclarativeScopeProvider {
@Override
public IScope getScope(EObject context, EReference reference) {
if (reference.getEType().getInstanceClass() == Event.class) {
EList<EObject> elements = getScopedElementsOfType(context, Event.class);
return Scopes.scopeFor(elements);
} else if (reference.getEType().getInstanceClass() == Entity.class) {
EList<EObject> elements = getScopedElementsOfType(context, Entity.class);
return Scopes.scopeFor(elements);
} else if (reference.getEType().getInstanceClass() == EventSpecificationTemplate.class) {
EList<EObject> elements = getScopedElementsOfType(context, EventSpecificationTemplate.class);
return Scopes.scopeFor(elements);
}
return super.getScope(context, reference);
}
public IScope scope_ElementImport_importedElement(ElementImport context, EReference ref) {
EList<EObject> elements = new BasicEList<>();
Package ip = context.getImportedPackage();
for (PackageableElement e : ip.getPackagedElement()) {
elements.add(e);
}
IScope scope = Scopes.scopeFor(elements);
return scope;
}
public IScope scope_EventReference_event(EventReference context, EReference ref) {
EList<EObject> elements = getScopedElementsOfType(context, Event.class);
IScope scope = Scopes.scopeFor(elements);
return scope;
}
public IScope scope_EntityReference_entity(EntityReference context, EReference ref) {
EList<EObject> elements = getScopedElementsOfType(context, Entity.class);
IScope scope = Scopes.scopeFor(elements);
return scope;
}
public IScope scope_DataInstanceUse_dataInstance(DataInstanceUse context, EReference ref) {
EList<EObject> elements = getScopedElementsOfType(context, DataInstance.class);
IScope scope = Scopes.scopeFor(elements);
return scope;
}
public IScope scope_LiteralValue_dataType(LiteralValue context, EReference ref) {
EList<EObject> elements = getScopedElementsOfType(context, DataType.class);
IScope scope = Scopes.scopeFor(elements);
return scope;
}
private Package getPackage(EObject e) {
if (e.eContainer() instanceof Package) {
return (Package)e.eContainer();
} else {
return getPackage(e.eContainer());
}
}
private EList<EObject> getScopedElementsOfType(EObject context, Class c) {
EList<EObject> elements = new BasicEList<>();
Package p = getPackage(context);
//within same package
for (PackageableElement e : p.getPackagedElement()) {
if (c.isInstance(e)) {
elements.add(e);
}
}
//within imported packages
for (ElementImport i : p.getImport()) {
Package ip = i.getImportedPackage();
if (i.getImportedElement().isEmpty()) {
//import all
for (PackageableElement e : ip.getPackagedElement()) {
if (c.isInstance(e)) {
elements.add(e);
}
}
} else {
//specific imports
for (PackageableElement e : i.getImportedElement()) {
if (c.isInstance(e)) {
elements.add(e);
}
}
}
}
return elements;
}
}