org.eclipse.osbp.xtext.signal/src/org/eclipse/osbp/xtext/signal/validation/SignalDSLValidator.xtend - osbp/org.eclipse.osbp.xtext.signal - Git at Google

 /**
  *
  *  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.validation

 import java.nio.file.FileSystems
 import java.nio.file.Path
 import java.nio.file.PathMatcher
 import java.text.ParseException
 import java.util.HashSet
 import java.util.regex.PatternSyntaxException
 import javax.inject.Inject
 import org.eclipse.osbp.xtext.datainterchange.validation.DataDSLValidator
 import org.eclipse.osbp.xtext.signal.CronScheduler
 import org.eclipse.osbp.xtext.signal.DailyScheduler
 import org.eclipse.osbp.xtext.signal.HourlyScheduler
 import org.eclipse.osbp.xtext.signal.MonthlyScheduler
 import org.eclipse.osbp.xtext.signal.SignalDSLPackage
 import org.eclipse.osbp.xtext.signal.SignalFunction
 import org.eclipse.osbp.xtext.signal.SignalPackage
 import org.eclipse.osbp.xtext.signal.SignalScheduler
 import org.eclipse.osbp.xtext.signal.SignalWatcher
 import org.eclipse.osbp.xtext.signal.WeeklyScheduler
 import org.eclipse.osbp.xtext.signal.common.SignalConstants
 import org.eclipse.osbp.xtext.signal.jvmmodel.SignalDSLJvmModelInferrer
 import org.eclipse.xtext.validation.Check
 import org.quartz.CronExpression

 /**
  * This class contains custom validation rules.
  *
  * See https://www.eclipse.org/Xtext/documentation/303_runtime_concepts.html#validation
  */
 class SignalDSLValidator extends AbstractSignalDSLValidator {

 	@Inject extension DataDSLValidator dv
 	@Inject extension SignalDSLJvmModelInferrer jvm

 	@Check
 	def checkDuplicateWatcherNames(SignalPackage pkg) {
 		var signals = new HashSet<String>()
 		for (signal : pkg.signals) {
 			if (!signals.contains(signal.name)) {
 				signals.add(signal.name)
 			} else {
 				error("Watcher's and scheduler's ID have to be unique and [" + signal.name +
 					"] is already in use. Please change it.", signal, SignalDSLPackage.Literals.SIGNAL_DEFINITION__NAME)
 			}
 		}
 	}

 	@Check
 	def void checkSignalSchedulerValidity(SignalScheduler signal) {
 		if (signal.getSchedulertype !== null && signal.getSchedulertype instanceof CronScheduler) {
 			checkCronExpressionValidity(signal.getSchedulertype as CronScheduler)
 		} else if (signal.getSchedulertype !== null && signal.getSchedulertype instanceof HourlyScheduler) {
 			checkHourlySchedulerValidity(signal.getSchedulertype as HourlyScheduler)
 		} else if (signal.getSchedulertype !== null && signal.getSchedulertype instanceof DailyScheduler) {
 			checkDailySchedulerValidity(signal.getSchedulertype as DailyScheduler)
 		} else if (signal.getSchedulertype !== null && signal.getSchedulertype instanceof WeeklyScheduler) {
 			checkWeeklySchedulerValidity(signal.getSchedulertype as WeeklyScheduler)
 		} else if (signal.getSchedulertype !== null && signal.getSchedulertype instanceof MonthlyScheduler) {
 			checkMonthlySchedulerValidity(signal.getSchedulertype as MonthlyScheduler)
 		}
 	}

 	def void checkCronExpressionValidity(CronScheduler scheduler) {
 		var expression = scheduler.expression // format: s m h dm m dw
 		try {
 			if (!CronExpression.isValidExpression(expression)) {
 				CronExpression.validateExpression(expression)
 			}
 		} catch (ParseException exception) {
 			error("The cron expression you have entered is invalid.\n\n" + exception + SignalConstants.CRONEXP_NOTICE,
 				scheduler, SignalDSLPackage.Literals.CRON_SCHEDULER__EXPRESSION)
 		}
 	}

 	def void checkHourlySchedulerValidity(HourlyScheduler scheduler) {
 		if (!(scheduler.minute >= 0 && scheduler.minute <= 59)) {
 			error("The minute entry has to be between 0 and 59.", scheduler,
 				SignalDSLPackage.Literals.HOURLY_SCHEDULER__MINUTE)
 		}
 	}

 	def void checkDailySchedulerValidity(DailyScheduler scheduler) {
 		if (!(scheduler.hour >= 0 && scheduler.hour <= 23)) {
 			error("The hour entry has to be between 0 and 23.", scheduler,
 				SignalDSLPackage.Literals.DAILY_SCHEDULER__HOUR)
 		}
 		if (!(scheduler.minute >= 0 && scheduler.minute <= 59)) {
 			error("The minute entry has to be between 0 and 59.", scheduler,
 				SignalDSLPackage.Literals.DAILY_SCHEDULER__MINUTE)
 		}
 	}

 	def void checkWeeklySchedulerValidity(WeeklyScheduler scheduler) {
 		if (!(scheduler.hour >= 0 && scheduler.hour <= 23)) {
 			error("The hour entry has to be between 0 and 23.", scheduler,
 				SignalDSLPackage.Literals.WEEKLY_SCHEDULER__HOUR)
 		}
 		if (!(scheduler.minute >= 0 && scheduler.minute <= 59)) {
 			error("The minute entry has to be between 0 and 59.", scheduler,
 				SignalDSLPackage.Literals.WEEKLY_SCHEDULER__MINUTE)
 		}

 	}

 	def void checkMonthlySchedulerValidity(MonthlyScheduler scheduler) {
 		if (!(scheduler.dayofmonth >= 1 && scheduler.dayofmonth <= 31)) {
 			error("The hour entry has to be between 1 and 31.", scheduler,
 				SignalDSLPackage.Literals.MONTHLY_SCHEDULER__DAYOFMONTH)
 		}
 		if (!(scheduler.hour >= 0 && scheduler.hour <= 23)) {
 			error("The hour entry has to be between 0 and 23.", scheduler,
 				SignalDSLPackage.Literals.MONTHLY_SCHEDULER__HOUR)
 		}
 		if (!(scheduler.minute >= 0 && scheduler.minute <= 59)) {
 			error("The minute entry has to be between 0 and 59.", scheduler,
 				SignalDSLPackage.Literals.MONTHLY_SCHEDULER__MINUTE)
 		}
 	}

 	@Check
 	def void checkWatcherValidity(SignalWatcher watcher) {
 		if (watcher !== null && watcher.tasks !== null && watcher.interchangegroup !== null) {
 			var interchangeCount = watcher.taskCount(true)
 			var functionCount = watcher.taskCount(false)
 			var baseinterchangeCount = watcher.definedBaseInterchangeCount

 			var defaultInterchange = watcher.defaultInterchange
 			var baseInterchange = watcher.definedBaseInterchange

 			if(watcher.hasFileMask && interchangeCount > 1) {
 				error("Only one interchange unit is allowed to be defined within a watcher with file mask.",
 				watcher , SignalDSLPackage.Literals.SIGNAL_DEFINITION__TASKS)
 			}

 			if( (defaultInterchange === null && baseInterchange === null && interchangeCount >= 1) ||
 				(defaultInterchange === null && interchangeCount == 0 && functionCount > 0) ){

 				error("You haven't specify the interchange unit, whose import path should be watched. You must define one with the keyword 'applyon'.",
 				watcher, SignalDSLPackage.Literals.SIGNAL_DEFINITION__TASKS)
 			}
 			if ( defaultInterchange !== null && baseInterchange !== null) {
 				error("You can only mark one interchange unit with the keyword 'applyon'.",
 				watcher, SignalDSLPackage.Literals.SIGNAL_WATCHER__DEFAULT_INTERCHANGE)
 			}
 			if ( baseinterchangeCount > 1) {
 				error("You can only mark one interchange unit with the keyword 'applyon'.",
 				watcher, SignalDSLPackage.Literals.SIGNAL_DEFINITION__NAME)
 			}

 		}
 	}

 	@Check
 	def void checkDuplicateFileMaskOrFileName(SignalPackage pck) {
 		var filemasks = new HashSet<String>()
 		for (watcher : pck.signals) {
 			if(watcher instanceof SignalWatcher){
 				if(watcher.hasFileMask){
 					if (!filemasks.contains(watcher.identifier)) {
 						filemasks.add(watcher.identifier)
 					} else {
 						error("This file mask is already in use in another watcher. Please change it.", watcher,
 							SignalDSLPackage.Literals.SIGNAL_WATCHER__IDENTIFIER)
 					}
 				}
 				else{
 					if (!filemasks.contains(watcher.identifier)) {
 						filemasks.add(watcher.identifier)
 					} else {
 						error("This file name is already in use in another watcher. Please change it.", watcher,
 							SignalDSLPackage.Literals.SIGNAL_WATCHER__IDENTIFIER)
 					}
 				}
 			}
 		}
 	}

 	@Check
 	def void checkFileMaskAndFileNameValidity(SignalWatcher watcher) {
 		checkFileNameExtension(watcher);

 		if(watcher.hasFileMask){
 			if (watcher !== null && watcher.identifier !== null && !watcher.identifier.isEmpty) {
 				try {
 					FileSystems.^default.getPathMatcher("glob:" + watcher.identifier)
 				} catch (PatternSyntaxException exception) {
 					error("The pattern of this file mask is invalid, please change it. Error: " + exception.message,
 					watcher, SignalDSLPackage.Literals.SIGNAL_WATCHER__IDENTIFIER)
 				} catch (UnsupportedOperationException exception) {
 					error("The pattern of this file mask is not recognized, please change it. Error: " + exception.message,
 					watcher, SignalDSLPackage.Literals.SIGNAL_WATCHER__IDENTIFIER)
 				} catch (IllegalArgumentException exception) {
 					error("The pattern of this file mask is invalid, please change it. Error: " + exception.message,
 					watcher, SignalDSLPackage.Literals.SIGNAL_WATCHER__IDENTIFIER)
 				}
 			}
 		}
 	}

 	def void checkFileNameExtension(SignalWatcher watcher){
 		if(watcher !== null && watcher.identifier !== null && !watcher.identifier.isEmpty && watcher.interchangegroup !== null) {
 			if (!isExtensionValid(watcher.identifier) && watcher.hasFileMask) {
 				error("The file mask extension you have entered is not currently supported. Only file masks ending with either one of the following extensions are allowed: '.csv' '.edi' '.txt' or '.xml' .",
 				watcher, SignalDSLPackage.Literals.SIGNAL_WATCHER__IDENTIFIER)
 			}
 			else if (!isExtensionValid(watcher.identifier) && !watcher.hasFileMask) {
 				error("The file name extension you have entered is not currently supported. Only file names ending with either one of the following extensions are allowed: '.csv' '.edi' '.txt' or '.xml' .",
 				watcher, SignalDSLPackage.Literals.SIGNAL_WATCHER__IDENTIFIER)
 			}
 		}
 	}

 	def PathMatcher isFileMaskValid(String filemask) {
 		if (filemask !== null && !filemask.isEmpty) {
 			try {
 				return FileSystems.^default.getPathMatcher("glob:" + filemask)
 			} catch (Exception exception) {
 				return null
 			}
 		}
 		return null
 	}

 	def String escapeCharacters(String pattern) {
 		if (pattern !== null && !pattern.isEmpty) {
 			var result = pattern
 			if (result.indexOf('*') !== -1) {
 				result = result.replaceAll("\\*", "")
 			}
 			if (result.contains("\\")) {
 				result = result.replaceAll("\\", "")
 			}
 			if (result.contains("?")) {
 				result = result.replaceAll("\\?", "")
 			}
 			return result
 		}
 		return null
 	}

 	@Check
 	def void checkFunctionTaskValidity(SignalFunction function) {
 		if(function !== null && function.group !== null && function.doExecuteFunction !== null && function.doExecuteFunction.params !== null){
 			if(function.onExportFile || function.onImportFile) {
 				if(function.doExecuteFunction.params.size !== 1) {
 					error("Only functions with one parameter from type java.nio.file.Path are allowed to be selected.", function, SignalDSLPackage.Literals.SIGNAL_FUNCTION__DO_EXECUTE_FUNCTION)
 				}

 				if(function.doExecuteFunction.params.size === 1	&& !function.doExecuteFunction.params.get(0).parameterType.type.identifier.equals(Path.name)){
 					error("Only functions with one parameter from type java.nio.file.Path are allowed to be selected.", function, SignalDSLPackage.Literals.SIGNAL_FUNCTION__DO_EXECUTE_FUNCTION)
 				}
 			}
 			else if(!function.onExportFile && !function.onImportFile && !function.doExecuteFunction.params.empty){
 				error("Only functions without parameter are allowed to be selected.", function, SignalDSLPackage.Literals.SIGNAL_FUNCTION__DO_EXECUTE_FUNCTION)
 			}
 		}
 	}
 }
	/**
	*
	* 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.validation

	import java.nio.file.FileSystems
	import java.nio.file.Path
	import java.nio.file.PathMatcher
	import java.text.ParseException
	import java.util.HashSet
	import java.util.regex.PatternSyntaxException
	import javax.inject.Inject
	import org.eclipse.osbp.xtext.datainterchange.validation.DataDSLValidator
	import org.eclipse.osbp.xtext.signal.CronScheduler
	import org.eclipse.osbp.xtext.signal.DailyScheduler
	import org.eclipse.osbp.xtext.signal.HourlyScheduler
	import org.eclipse.osbp.xtext.signal.MonthlyScheduler
	import org.eclipse.osbp.xtext.signal.SignalDSLPackage
	import org.eclipse.osbp.xtext.signal.SignalFunction
	import org.eclipse.osbp.xtext.signal.SignalPackage
	import org.eclipse.osbp.xtext.signal.SignalScheduler
	import org.eclipse.osbp.xtext.signal.SignalWatcher
	import org.eclipse.osbp.xtext.signal.WeeklyScheduler
	import org.eclipse.osbp.xtext.signal.common.SignalConstants
	import org.eclipse.osbp.xtext.signal.jvmmodel.SignalDSLJvmModelInferrer
	import org.eclipse.xtext.validation.Check
	import org.quartz.CronExpression

	/**
	* This class contains custom validation rules.
	*
	* See https://www.eclipse.org/Xtext/documentation/303_runtime_concepts.html#validation
	*/
	class SignalDSLValidator extends AbstractSignalDSLValidator {

	@Inject extension DataDSLValidator dv
	@Inject extension SignalDSLJvmModelInferrer jvm

	@Check
	def checkDuplicateWatcherNames(SignalPackage pkg) {
	var signals = new HashSet<String>()
	for (signal : pkg.signals) {
	if (!signals.contains(signal.name)) {
	signals.add(signal.name)
	} else {
	error("Watcher's and scheduler's ID have to be unique and [" + signal.name +
	"] is already in use. Please change it.", signal, SignalDSLPackage.Literals.SIGNAL_DEFINITION__NAME)
	}
	}
	}

	@Check
	def void checkSignalSchedulerValidity(SignalScheduler signal) {
	if (signal.getSchedulertype !== null && signal.getSchedulertype instanceof CronScheduler) {
	checkCronExpressionValidity(signal.getSchedulertype as CronScheduler)
	} else if (signal.getSchedulertype !== null && signal.getSchedulertype instanceof HourlyScheduler) {
	checkHourlySchedulerValidity(signal.getSchedulertype as HourlyScheduler)
	} else if (signal.getSchedulertype !== null && signal.getSchedulertype instanceof DailyScheduler) {
	checkDailySchedulerValidity(signal.getSchedulertype as DailyScheduler)
	} else if (signal.getSchedulertype !== null && signal.getSchedulertype instanceof WeeklyScheduler) {
	checkWeeklySchedulerValidity(signal.getSchedulertype as WeeklyScheduler)
	} else if (signal.getSchedulertype !== null && signal.getSchedulertype instanceof MonthlyScheduler) {
	checkMonthlySchedulerValidity(signal.getSchedulertype as MonthlyScheduler)
	}
	}

	def void checkCronExpressionValidity(CronScheduler scheduler) {
	var expression = scheduler.expression // format: s m h dm m dw
	try {
	if (!CronExpression.isValidExpression(expression)) {
	CronExpression.validateExpression(expression)
	}
	} catch (ParseException exception) {
	error("The cron expression you have entered is invalid.\n\n" + exception + SignalConstants.CRONEXP_NOTICE,
	scheduler, SignalDSLPackage.Literals.CRON_SCHEDULER__EXPRESSION)
	}
	}

	def void checkHourlySchedulerValidity(HourlyScheduler scheduler) {
	if (!(scheduler.minute >= 0 && scheduler.minute <= 59)) {
	error("The minute entry has to be between 0 and 59.", scheduler,
	SignalDSLPackage.Literals.HOURLY_SCHEDULER__MINUTE)
	}
	}

	def void checkDailySchedulerValidity(DailyScheduler scheduler) {
	if (!(scheduler.hour >= 0 && scheduler.hour <= 23)) {
	error("The hour entry has to be between 0 and 23.", scheduler,
	SignalDSLPackage.Literals.DAILY_SCHEDULER__HOUR)
	}
	if (!(scheduler.minute >= 0 && scheduler.minute <= 59)) {
	error("The minute entry has to be between 0 and 59.", scheduler,
	SignalDSLPackage.Literals.DAILY_SCHEDULER__MINUTE)
	}
	}

	def void checkWeeklySchedulerValidity(WeeklyScheduler scheduler) {
	if (!(scheduler.hour >= 0 && scheduler.hour <= 23)) {
	error("The hour entry has to be between 0 and 23.", scheduler,
	SignalDSLPackage.Literals.WEEKLY_SCHEDULER__HOUR)
	}
	if (!(scheduler.minute >= 0 && scheduler.minute <= 59)) {
	error("The minute entry has to be between 0 and 59.", scheduler,
	SignalDSLPackage.Literals.WEEKLY_SCHEDULER__MINUTE)
	}

	}

	def void checkMonthlySchedulerValidity(MonthlyScheduler scheduler) {
	if (!(scheduler.dayofmonth >= 1 && scheduler.dayofmonth <= 31)) {
	error("The hour entry has to be between 1 and 31.", scheduler,
	SignalDSLPackage.Literals.MONTHLY_SCHEDULER__DAYOFMONTH)
	}
	if (!(scheduler.hour >= 0 && scheduler.hour <= 23)) {
	error("The hour entry has to be between 0 and 23.", scheduler,
	SignalDSLPackage.Literals.MONTHLY_SCHEDULER__HOUR)
	}
	if (!(scheduler.minute >= 0 && scheduler.minute <= 59)) {
	error("The minute entry has to be between 0 and 59.", scheduler,
	SignalDSLPackage.Literals.MONTHLY_SCHEDULER__MINUTE)
	}
	}

	@Check
	def void checkWatcherValidity(SignalWatcher watcher) {
	if (watcher !== null && watcher.tasks !== null && watcher.interchangegroup !== null) {
	var interchangeCount = watcher.taskCount(true)
	var functionCount = watcher.taskCount(false)
	var baseinterchangeCount = watcher.definedBaseInterchangeCount

	var defaultInterchange = watcher.defaultInterchange
	var baseInterchange = watcher.definedBaseInterchange

	if(watcher.hasFileMask && interchangeCount > 1) {
	error("Only one interchange unit is allowed to be defined within a watcher with file mask.",
	watcher , SignalDSLPackage.Literals.SIGNAL_DEFINITION__TASKS)
	}

	if( (defaultInterchange === null && baseInterchange === null && interchangeCount >= 1) \|\|
	(defaultInterchange === null && interchangeCount == 0 && functionCount > 0) ){

	error("You haven't specify the interchange unit, whose import path should be watched. You must define one with the keyword 'applyon'.",
	watcher, SignalDSLPackage.Literals.SIGNAL_DEFINITION__TASKS)
	}
	if ( defaultInterchange !== null && baseInterchange !== null) {
	error("You can only mark one interchange unit with the keyword 'applyon'.",
	watcher, SignalDSLPackage.Literals.SIGNAL_WATCHER__DEFAULT_INTERCHANGE)
	}
	if ( baseinterchangeCount > 1) {
	error("You can only mark one interchange unit with the keyword 'applyon'.",
	watcher, SignalDSLPackage.Literals.SIGNAL_DEFINITION__NAME)
	}

	}
	}

	@Check
	def void checkDuplicateFileMaskOrFileName(SignalPackage pck) {
	var filemasks = new HashSet<String>()
	for (watcher : pck.signals) {
	if(watcher instanceof SignalWatcher){
	if(watcher.hasFileMask){
	if (!filemasks.contains(watcher.identifier)) {
	filemasks.add(watcher.identifier)
	} else {
	error("This file mask is already in use in another watcher. Please change it.", watcher,
	SignalDSLPackage.Literals.SIGNAL_WATCHER__IDENTIFIER)
	}
	}
	else{
	if (!filemasks.contains(watcher.identifier)) {
	filemasks.add(watcher.identifier)
	} else {
	error("This file name is already in use in another watcher. Please change it.", watcher,
	SignalDSLPackage.Literals.SIGNAL_WATCHER__IDENTIFIER)
	}
	}
	}
	}
	}

	@Check
	def void checkFileMaskAndFileNameValidity(SignalWatcher watcher) {
	checkFileNameExtension(watcher);

	if(watcher.hasFileMask){
	if (watcher !== null && watcher.identifier !== null && !watcher.identifier.isEmpty) {
	try {
	FileSystems.^default.getPathMatcher("glob:" + watcher.identifier)
	} catch (PatternSyntaxException exception) {
	error("The pattern of this file mask is invalid, please change it. Error: " + exception.message,
	watcher, SignalDSLPackage.Literals.SIGNAL_WATCHER__IDENTIFIER)
	} catch (UnsupportedOperationException exception) {
	error("The pattern of this file mask is not recognized, please change it. Error: " + exception.message,
	watcher, SignalDSLPackage.Literals.SIGNAL_WATCHER__IDENTIFIER)
	} catch (IllegalArgumentException exception) {
	error("The pattern of this file mask is invalid, please change it. Error: " + exception.message,
	watcher, SignalDSLPackage.Literals.SIGNAL_WATCHER__IDENTIFIER)
	}
	}
	}
	}

	def void checkFileNameExtension(SignalWatcher watcher){
	if(watcher !== null && watcher.identifier !== null && !watcher.identifier.isEmpty && watcher.interchangegroup !== null) {
	if (!isExtensionValid(watcher.identifier) && watcher.hasFileMask) {
	error("The file mask extension you have entered is not currently supported. Only file masks ending with either one of the following extensions are allowed: '.csv' '.edi' '.txt' or '.xml' .",
	watcher, SignalDSLPackage.Literals.SIGNAL_WATCHER__IDENTIFIER)
	}
	else if (!isExtensionValid(watcher.identifier) && !watcher.hasFileMask) {
	error("The file name extension you have entered is not currently supported. Only file names ending with either one of the following extensions are allowed: '.csv' '.edi' '.txt' or '.xml' .",
	watcher, SignalDSLPackage.Literals.SIGNAL_WATCHER__IDENTIFIER)
	}
	}
	}

	def PathMatcher isFileMaskValid(String filemask) {
	if (filemask !== null && !filemask.isEmpty) {
	try {
	return FileSystems.^default.getPathMatcher("glob:" + filemask)
	} catch (Exception exception) {
	return null
	}
	}
	return null
	}

	def String escapeCharacters(String pattern) {
	if (pattern !== null && !pattern.isEmpty) {
	var result = pattern
	if (result.indexOf('*') !== -1) {
	result = result.replaceAll("\\*", "")
	}
	if (result.contains("\\")) {
	result = result.replaceAll("\\", "")
	}
	if (result.contains("?")) {
	result = result.replaceAll("\\?", "")
	}
	return result
	}
	return null
	}

	@Check
	def void checkFunctionTaskValidity(SignalFunction function) {
	if(function !== null && function.group !== null && function.doExecuteFunction !== null && function.doExecuteFunction.params !== null){
	if(function.onExportFile \|\| function.onImportFile) {
	if(function.doExecuteFunction.params.size !== 1) {
	error("Only functions with one parameter from type java.nio.file.Path are allowed to be selected.", function, SignalDSLPackage.Literals.SIGNAL_FUNCTION__DO_EXECUTE_FUNCTION)
	}

	if(function.doExecuteFunction.params.size === 1 && !function.doExecuteFunction.params.get(0).parameterType.type.identifier.equals(Path.name)){
	error("Only functions with one parameter from type java.nio.file.Path are allowed to be selected.", function, SignalDSLPackage.Literals.SIGNAL_FUNCTION__DO_EXECUTE_FUNCTION)
	}
	}
	else if(!function.onExportFile && !function.onImportFile && !function.doExecuteFunction.params.empty){
	error("Only functions without parameter are allowed to be selected.", function, SignalDSLPackage.Literals.SIGNAL_FUNCTION__DO_EXECUTE_FUNCTION)
	}
	}
	}
	}