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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.DataInstanceUse;
import org.etsi.mts.tdl.ElementImport;
import org.etsi.mts.tdl.MemberAssignment;
import org.etsi.mts.tdl.MemberReference;
import org.etsi.mts.tdl.Package;
import org.etsi.mts.tdl.PackageableElement;
import org.etsi.mts.tdl.Parameter;
import org.etsi.mts.tdl.ParameterBinding;
import org.etsi.mts.tdl.StructuredDataInstance;
import org.etsi.mts.tdl.StructuredDataType;
import org.etsi.mts.tdl.structuredobjectives.Content;
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 (PackageableElement.class.isAssignableFrom(reference.getEType().getInstanceClass())
&& !(context instanceof ElementImport)) {
EList<EObject> elements = getScopedElementsOfType(context, reference.getEType().getInstanceClass());
return Scopes.scopeFor(elements);
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} else if (Parameter.class.isAssignableFrom(reference.getEType().getInstanceClass())) {
if (context instanceof MemberAssignment) {
if (context.eContainer() instanceof StructuredDataInstance) {
IScope scope = Scopes.scopeFor(((StructuredDataType)((StructuredDataInstance)context.eContainer()).getDataType()).getMember());
return scope;
}
} else if (context instanceof ParameterBinding) {
if (context.eContainer() instanceof DataInstanceUse) {
if (((DataInstanceUse)context.eContainer()).getDataInstance() instanceof StructuredDataInstance) {
IScope scope = Scopes.scopeFor(((StructuredDataType)((StructuredDataInstance)((DataInstanceUse)context.eContainer()).getDataInstance()).getDataType()).getMember());
return scope;
}
}
} else if (context instanceof MemberReference) {
if (((DataUse)context.eContainer()).getReduction().indexOf(context)>0) {
EObject targetContext = ((DataUse)context.eContainer()).getReduction().get(((DataUse)context.eContainer()).getReduction().indexOf(context)-1);
if (((MemberReference)targetContext).getMember()!=null) {
if (((MemberReference)targetContext).getMember().getDataType() instanceof StructuredDataType) {
IScope scope = Scopes.scopeFor(((StructuredDataType)((MemberReference)targetContext).getMember().getDataType()).getMember());
return scope;
}
}
}
if (context.eContainer() instanceof DataInstanceUse) {
if (((DataInstanceUse)context.eContainer()).getDataInstance() instanceof StructuredDataInstance) {
IScope scope = Scopes.scopeFor(((StructuredDataType)((StructuredDataInstance)((DataInstanceUse)context.eContainer()).getDataInstance()).getDataType()).getMember());
return scope;
}
}
} else if (context instanceof Content) {
if (context.eContainer() instanceof LiteralValue) {
if (((LiteralValue)context.eContainer()).getDataType() instanceof StructuredDataType) {
IScope scope = Scopes.scopeFor(((StructuredDataType)((LiteralValue)context.eContainer()).getDataType()).getMember());
return scope;
}
} else if (context.eContainer() instanceof Content) {
if (((Content)context.eContainer()).getMember().getDataType() instanceof StructuredDataType) {
IScope scope = Scopes.scopeFor(((StructuredDataType)((Content)context.eContainer()).getMember().getDataType()).getMember());
return scope;
}
}
}
} else {
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}
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;
}
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;
}
}