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 org.eclipse.emf.ecore.EObject
import org.eclipse.emf.ecore.EReference
import org.eclipse.osbp.xtext.datainterchange.DataInterchangeGroup
import org.eclipse.osbp.xtext.functionlibrarydsl.FunctionLibraryActionGroup
import org.eclipse.osbp.xtext.signal.SignalActionTypeEnum
import org.eclipse.osbp.xtext.signal.SignalDSLPackage
import org.eclipse.osbp.xtext.signal.SignalDatainterchange
import org.eclipse.osbp.xtext.signal.SignalDefinition
import org.eclipse.osbp.xtext.signal.SignalFunction
import org.eclipse.osbp.xtext.signal.SignalScheduler
import org.eclipse.osbp.xtext.signal.SignalWatcher
import org.eclipse.xtext.scoping.Scopes

/**
 * 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 {

	override getScope(EObject context, EReference reference) {
		if (reference == SignalDSLPackage.Literals.SIGNAL_DATAINTERCHANGE__DATA_REF) {
			return getScope_DataInterchanges(context, reference)
		}
		else if (reference == SignalDSLPackage.Literals.SIGNAL_FUNCTION__SUPPORT_INTERCHANGE) {
			return getScope_AllowedDataInterchangesForSupportedFile((context as SignalFunction), reference)
		}
		else if (reference == SignalDSLPackage.Literals.SIGNAL_WATCHER__DEFAULT_INTERCHANGE) {
			return getScope_AllowedInterchangesForDefault((context as SignalDefinition), reference)
		}
		else if (reference == SignalDSLPackage.Literals.SIGNAL_FUNCTION__DO_EXECUTE_FUNCTION) {
			return getScope_DoExecuteFunctions((context as SignalFunction).group, reference)
		}
		else {
			super.getScope(context, reference)
		}
	}
	
	def getScope_DataInterchanges(EObject context, EReference reference) {
		var result = <EObject>newArrayList
		if (context !== null) {
			var signal = context.eContainer
			var group = null as DataInterchangeGroup
			if(signal instanceof SignalWatcher){
				group = signal.interchangegroup
			}
			else if(signal instanceof SignalScheduler){
				group = signal.interchangegroup
			}
			for(value : group.datInts){
				result.add(value)
			}
		}
		return Scopes::scopeFor(result)
	}
	def getScope_AllowedInterchangesForDefault(SignalDefinition signal, EReference reference) {
		var result = <EObject>newArrayList
		if(signal !== null ){
			var group = signal.interchangegroup
			for(value : group.datInts){
				result.add(value)
			}
			return Scopes::scopeFor(result)
		}
	}
	
	def getScope_AllowedDataInterchangesForSupportedFile(SignalFunction function, EReference reference) {
		var result = <EObject>newArrayList
		if (function !== null) {
			var signal = function.eContainer
			if(signal instanceof SignalDefinition){
				if(signal.tasks !== null && !signal.tasks.empty){
					for(task : signal.tasks){
						if(task instanceof SignalDatainterchange){
							if(function.onExportFile && task.actionType.equals(SignalActionTypeEnum.DATAEXPORT)){
								result.add(task.dataRef)
							}							
							else if(function.onImportFile && task.actionType.equals(SignalActionTypeEnum.DATAIMPORT)){
								result.add(task.dataRef)
							}
						}
					}
				}
			}
		}
		return Scopes::scopeFor(result)
	}
	
	def getScope_AllowedDefaultDataInterchanges(FunctionLibraryActionGroup group, EReference reference) {
		var result = <EObject>newArrayList
		if (group !== null) {
			for(function : group.executes){
				result.add(function)
			}
		}
		return Scopes::scopeFor(result)
	}
	def getScope_DoExecuteFunctions(FunctionLibraryActionGroup group, EReference reference) {
		var result = <EObject>newArrayList
		if (group !== null) {
			for(function : group.executes){
				result.add(function)
			}
		}
		return Scopes::scopeFor(result)
	}
}