Model:
	elements+=Element*;
	
Element:
	Domain | DtDefinition;

Domain:
	'declare' 'Domain' name=ID;

DtDefinition:
	'create' 'DtDefinition' name=ID '{'
		'domain:' domain=[Domain]
	'}'
;

declare Domain DoFirstDomain

create DtDefinition DtFirstDef {
	domain:DoFirstDomain
}

create DtDefinition DtSecondDef {
	domain: DoDtFirstDefDto
}

class MyDslScopeProvider extends AbstractMyDslScopeProvider {

	@Inject
	ResourceDescriptionsProvider provider;
	
	override getScope(EObject context, EReference reference) {
		
		// we only need to generate domains when the editor tries to resolve scope for a domain	inside a DtDefinition	
		if (reference == MyDslPackage.Literals.DT_DEFINITION__DOMAIN) {
			// a set of unique names
			val Set<String> addedDomains = new HashSet<String>();
			
			// get live DtDefinitions for current file
			var	topContainer = context.eContainer
			if (topContainer !== null)
			{
				while (topContainer.eContainer !== null) {
					topContainer = topContainer.eContainer
					for (item : topContainer.eContents) {
						if (item instanceof DtDefinition) {
							if (item.getName() !== null) {
								// for each DtDefinition found, create a domain name
								addedDomains.add("Do"+ item.getName().toString()+"Dto");
							}
						}
					}
				}
			}
			
			// get DtDefinitions from all resources
			val IResourceDescriptions descriptions  = provider.createResourceDescriptions();
			if (descriptions !== null) {
				for (IResourceDescription resDescription :  descriptions.getAllResourceDescriptions()) {
					val listOfDtDefinitionDescriptions = resDescription.getExportedObjectsByType(MyDslPackage.eINSTANCE.getDtDefinition());
					
					for(definition : listOfDtDefinitionDescriptions) {
						// for each DtDefinition found, create a domain name
						addedDomains.add("Do"+ definition.getName().toString()+"Dto");
					}
				}
			}
			
			// create a list of "virtual" object descriptions to add to scope
			val List<IEObjectDescription> objectDescriptionsToAdd = new ArrayList
		
			for (item : addedDomains) {
				val EObject someObject = MyDslFactory.eINSTANCE.create(MyDslPackage.Literals.DOMAIN)
				val QualifiedName name = QualifiedName.create(item)
				objectDescriptionsToAdd.add(EObjectDescription.create(name, someObject))
				reference.eResource.contents.add(someObject)
			}
			//return new scope extending parent scope with virtual object descriptions
			return (new SimpleScope(super.getScope(context, reference), objectDescriptionsToAdd))
		}
		// return parent scope if nothing to add to it
		return super.getScope(context, reference);
	}
}