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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.ConfigurationScript
import hu.bme.mit.inf.dslreasoner.application.applicationConfiguration.EPackageImport
import hu.bme.mit.inf.dslreasoner.application.applicationConfiguration.PatternEntry
import hu.bme.mit.inf.dslreasoner.application.applicationConfiguration.ViatraImport
import java.util.Collections
import java.util.List
import java.util.Optional
import org.eclipse.emf.common.util.URI
import org.eclipse.emf.ecore.EObject
import org.eclipse.emf.ecore.EReference
import org.eclipse.emf.ecore.resource.Resource
import org.eclipse.viatra.query.patternlanguage.emf.scoping.IMetamodelProvider
import org.eclipse.xtext.EcoreUtil2
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
import org.eclipse.emf.ecore.resource.ResourceSet
import org.eclipse.emf.ecore.EPackage
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) {
if(ref == viatraImport_ImportedViatra) {
return getViatra(context as ViatraImport, node)
}
} else if(context instanceof PatternEntry) {
if(ref === patternEntry_Package) {
return getViatraPackage(context as PatternEntry,node)
}
}
return super.getLinkedObjects(context, ref, node)
}
def getViatraPackage(PatternEntry entry, INode node) {
val document = EcoreUtil2.getContainerOfType(entry,ConfigurationScript)
val nodeString = valueConverterService.toValue(node.text,
linkingHelper.getRuleNameFrom(node.grammarElement), node).toString.replaceAll("\\s","")
val patternModels = document.imports.filter(ViatraImport).map[it.importedViatra].filterNull
val List<EObject> patternModelsWithSameNamespace = patternModels.filter[nodeString.equals(it.packageName)].filter(EObject).toList
return patternModelsWithSameNamespace
}
private def getEPackage(EPackageImport packageImport, ILeafNode node) {
val x = getNSUri(node)
if(x.isPresent) {
val uriString = x.get
val epackageByMetamodelProvider = metamodelProvider.loadEPackage(uriString, packageImport.eResource.resourceSet)
val epackageByMe = ePackageByMe(packageImport.eResource.resourceSet,uriString)
//println(epackageByMetamodelProvider)
//println(epackageByMe)
if(epackageByMetamodelProvider!==null) {
return Collections.singletonList(epackageByMetamodelProvider as EObject)
} else if(epackageByMe !== null) {
return Collections.singletonList(epackageByMe as EObject)
} else {
emptyList
}
} else {
return emptyList
}
}
private def ePackageByMe(ResourceSet rs, String uri) {
try {
val resource = rs.getResource(URI.createURI(uri), true);
return resource.contents.head as EPackage
} catch (Exception e) {
return null
}
}
private def getViatra(ViatraImport viatraImport, INode node) {
val uri = getNSUri(node)
if(uri.present) {
var URI createdURI
try{
createdURI = URI.createURI(uri.get)
}catch(IllegalArgumentException e) {
return super.getLinkedObjects(viatraImport, viatraImport_ImportedViatra, node)
}
var Resource res
try{
res = viatraImport.eResource.resourceSet.getResource(createdURI,true);
} catch(RuntimeException e){
return super.getLinkedObjects(viatraImport, viatraImport_ImportedViatra, node)
}
if(res!==null && !res.contents.nullOrEmpty) {
return #[res.contents.head]
} else {
return super.getLinkedObjects(viatraImport, viatraImport_ImportedViatra, node)
}
} else {
return super.getLinkedObjects(viatraImport, viatraImport_ImportedViatra, node)
}
}
private def getNSUri(INode 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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