org.eclipse.osbp.xtext.signal/src/org/eclipse/osbp/xtext/signal/scoping/SignalDSLScopeProvider.xtend

/**
 *                                                                            
 *  Copyright (c) 2011, 2018 - Loetz GmbH&Co.KG (69115 Heidelberg, Germany) 
 *                                                                            
 *  All rights reserved. This program and the accompanying materials           
 *  are made available under the terms of the Eclipse Public License 2.0        
 *  which accompanies this distribution, and is available at                  
 *  https://www.eclipse.org/legal/epl-2.0/                                 
 *                                 
 *  SPDX-License-Identifier: EPL-2.0                                 
 *                                                                            
 *  Contributors:                                                      
 * 	   Christophe Loetz (Loetz GmbH&Co.KG) - initial implementation
 * 
 * generated by Xtext 2.11.0
 * 
 */

package org.eclipse.osbp.xtext.signal.scoping

import javax.inject.Inject
import org.eclipse.emf.ecore.EObject
import org.eclipse.emf.ecore.EReference
import org.eclipse.osbp.dsl.common.xtext.extensions.ModelExtensions
import org.eclipse.osbp.xtext.datainterchange.DataInterchange
import org.eclipse.osbp.xtext.datainterchange.DataInterchangeGroup
import org.eclipse.osbp.xtext.signal.SignalDSLPackage
import org.eclipse.osbp.xtext.signal.SignalScheduler
import org.eclipse.osbp.xtext.signal.SignalWatcher
import org.eclipse.osbp.xtext.signal.WatcherWithFileMask
import org.eclipse.osbp.xtext.signal.WatcherWithFileName
import org.eclipse.xtext.resource.EObjectDescription
import org.eclipse.xtext.resource.IEObjectDescription
import org.eclipse.xtext.scoping.IScope
import org.eclipse.xtext.scoping.impl.MapBasedScope

/**
 * 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.
 */
class SignalDSLScopeProvider extends AbstractSignalDSLScopeProvider {

	@Inject extension ModelExtensions
	
	override getScope(EObject context, EReference reference) {
		if (reference == SignalDSLPackage.Literals.SIGNAL_DATAINTERCHANGE__DATA_REF) {
			return getScope_DataInterchanges(context, reference)
		} 
		else {
			super.getScope(context, reference)
		}
	}
	
	def getScope_DataInterchanges(EObject context, EReference reference) {
		var result = <IEObjectDescription>newArrayList
		
		if (context !== null) {
			
			var signal = context.eContainer
			var group = null as DataInterchangeGroup
			if(signal instanceof WatcherWithFileMask){
				group = signal.interchangegroup
			}
			else if(signal instanceof WatcherWithFileName){
				group = signal.interchangegroup
			}
			else if(signal instanceof SignalScheduler){
				group = signal.interchangegroup
			}
			for(value : group.datInts){
				result.add(EObjectDescription.create((value as DataInterchange).name, (value as DataInterchange)))
			}
		}
		return MapBasedScope.createScope(IScope.NULLSCOPE, result)
		
	}

}