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package hu.bme.mit.inf.dslreasoner.application.linking
import com.google.inject.Inject
import hu.bme.mit.inf.dslreasoner.application.applicationConfiguration.ApplicationConfigurationPackage
import hu.bme.mit.inf.dslreasoner.application.applicationConfiguration.EPackageImport
import hu.bme.mit.inf.dslreasoner.application.applicationConfiguration.ViatraImport
import java.util.Collections
import java.util.Optional
import org.eclipse.emf.ecore.EObject
import org.eclipse.emf.ecore.EReference
import org.eclipse.viatra.query.patternlanguage.emf.scoping.IMetamodelProvider
import org.eclipse.xtext.conversion.IValueConverterService
import org.eclipse.xtext.conversion.ValueConverterException
import org.eclipse.xtext.linking.impl.DefaultLinkingService
import org.eclipse.xtext.nodemodel.ILeafNode
import org.eclipse.xtext.nodemodel.INode
class ApplicationConfigurationLinkingService extends DefaultLinkingService{
//@Inject Logger logger
@Inject IValueConverterService valueConverterService
@Inject IMetamodelProvider metamodelProvider
public static extension ApplicationConfigurationPackage pac = ApplicationConfigurationPackage.eINSTANCE
override getLinkedObjects(EObject context, EReference ref, INode node) {
if(context instanceof EPackageImport) {
if(ref == EPackageImport_ImportedPackage && node instanceof ILeafNode) {
return getEPackage(context as EPackageImport, node as ILeafNode)
}
} else if(context instanceof ViatraImport) {
super.getLinkedObjects(context, ref, node)
}
return super.getLinkedObjects(context, ref, node)
}
private def getEPackage(EPackageImport packageImport, ILeafNode node) {
getMetamodelNsUri(node).flatMap [ uri |
Optional.ofNullable(metamodelProvider.loadEPackage(uri, packageImport.eResource.resourceSet))
].map [ ePackage |
Collections.singletonList(ePackage as EObject)
].orElse(emptyList)
}
private def getMetamodelNsUri(ILeafNode node) {
try {
val convertedValue = valueConverterService.toValue(node.text,
linkingHelper.getRuleNameFrom(node.grammarElement), node)
Optional.of(convertedValue as String)
} catch (ValueConverterException e) {
Optional.empty
}
}
}
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