+ initial global scope provider (may be removed again)

package org.etsi.mts.tdl.scoping

import com.google.common.base.Splitter

import com.google.inject.Inject

import com.google.inject.Provider

import java.util.LinkedHashSet

import org.eclipse.emf.common.util.URI

import org.eclipse.emf.ecore.resource.Resource

import org.eclipse.xtext.EcoreUtil2

import org.eclipse.xtext.resource.IResourceDescription

import org.eclipse.xtext.scoping.impl.ImportUriGlobalScopeProvider

import org.eclipse.xtext.util.IResourceScopeCache

import org.etsi.mts.tdl.RDS

import org.etsi.mts.tdl.tdlPackage

class TDLtxGlobalScopeProvider extends ImportUriGlobalScopeProvider {

	private static final Splitter SPLITTER = Splitter.on(',');

	@Inject

	IResourceDescription.Manager descriptionManager;

	@Inject

	IResourceScopeCache cache;

	override protected getImportedUris(Resource resource) {

		return cache.get(TDLtxGlobalScopeProvider.getSimpleName(), resource, new Provider<LinkedHashSet<URI>>() {

			override get() {

				val uniqueImportURIs = collectImportUris(resource, new LinkedHashSet<URI>(5))

				val uriIter = uniqueImportURIs.iterator()

				while(uriIter.hasNext()) {

					if (!EcoreUtil2.isValidUri(resource, uriIter.next()))

						uriIter.remove()

				}

				return uniqueImportURIs

			}

			def LinkedHashSet<URI> collectImportUris(Resource resource, LinkedHashSet<URI> uniqueImportURIs) {

				val resourceDescription = descriptionManager.getResourceDescription(resource)

				val models = resourceDescription.getExportedObjectsByType(tdlPackage.Literals.PACKAGE)

				models.forEach[

					val userData = getUserData(RDS.INCLUDES)

					if(userData !== null) {

						SPLITTER.split(userData).forEach[uri |

							var includedUri = URI.createURI(uri)

							includedUri = includedUri.resolve(resource.URI)

							if(uniqueImportURIs.add(includedUri)) {

								collectImportUris(resource.getResourceSet().getResource(includedUri, true), uniqueImportURIs)

							}

						]

					}

				]

				return uniqueImportURIs

			}

		});

	}

}

 No newline at end of file