Added base types to sgen meta model

plugins/org.yakindu.sct.model.sgen.edit/src/org/yakindu/sct/model/sgen/provider/FeatureConfigurationItemProvider.java

@@ -6,7 +6,6 @@
  */
 package org.yakindu.sct.model.sgen.provider;
 
-
 import java.util.Collection;
 import java.util.List;
 
@@ -24,27 +23,24 @@ import org.eclipse.emf.edit.provider.ITreeItemContentProvider;
 import org.eclipse.emf.edit.provider.ItemProviderAdapter;
 import org.eclipse.emf.edit.provider.ViewerNotification;
 import org.yakindu.sct.model.sgen.FeatureConfiguration;
+import org.yakindu.sct.model.sgen.FeatureType;
 import org.yakindu.sct.model.sgen.SGenFactory;
 import org.yakindu.sct.model.sgen.SGenPackage;
 
 /**
- * This is the item provider adapter for a {@link org.yakindu.sct.model.sgen.FeatureConfiguration} object.
- * <!-- begin-user-doc -->
- * <!-- end-user-doc -->
+ * This is the item provider adapter for a
+ * {@link org.yakindu.sct.model.sgen.FeatureConfiguration} object. <!--
+ * begin-user-doc --> <!-- end-user-doc -->
+ * 
  * @generated
  */
-public class FeatureConfigurationItemProvider
-	extends ItemProviderAdapter
-	implements
-		IEditingDomainItemProvider,
-		IStructuredItemContentProvider,
-		ITreeItemContentProvider,
-		IItemLabelProvider,
-		IItemPropertySource {
+public class FeatureConfigurationItemProvider extends ItemProviderAdapter
+		implements IEditingDomainItemProvider, IStructuredItemContentProvider,
+		ITreeItemContentProvider, IItemLabelProvider, IItemPropertySource {
 	/**
-	 * This constructs an instance from a factory and a notifier.
-	 * <!-- begin-user-doc -->
-	 * <!-- end-user-doc -->
+	 * This constructs an instance from a factory and a notifier. <!--
+	 * begin-user-doc --> <!-- end-user-doc -->
+	 * 
 	 * @generated
 	 */
 	public FeatureConfigurationItemProvider(AdapterFactory adapterFactory) {
@@ -52,9 +48,9 @@ public class FeatureConfigurationItemProvider
 	}
 
 	/**
-	 * This returns the property descriptors for the adapted class.
-	 * <!-- begin-user-doc -->
-	 * <!-- end-user-doc -->
+	 * This returns the property descriptors for the adapted class. <!--
+	 * begin-user-doc --> <!-- end-user-doc -->
+	 * 
 	 * @generated
 	 */
 	@Override
@@ -68,85 +64,94 @@ public class FeatureConfigurationItemProvider
 	}
 
 	/**
-	 * This adds a property descriptor for the Type feature.
-	 * <!-- begin-user-doc -->
-	 * <!-- end-user-doc -->
+	 * This adds a property descriptor for the Type feature. <!-- begin-user-doc
+	 * --> <!-- end-user-doc -->
+	 * 
 	 * @generated
 	 */
 	protected void addTypePropertyDescriptor(Object object) {
-		itemPropertyDescriptors.add
-			(createItemPropertyDescriptor
-				(((ComposeableAdapterFactory)adapterFactory).getRootAdapterFactory(),
-				 getResourceLocator(),
-				 getString("_UI_FeatureConfiguration_type_feature"),
-				 getString("_UI_PropertyDescriptor_description", "_UI_FeatureConfiguration_type_feature", "_UI_FeatureConfiguration_type"),
-				 SGenPackage.Literals.FEATURE_CONFIGURATION__TYPE,
-				 true,
-				 false,
-				 true,
-				 null,
-				 null,
-				 null));
+		itemPropertyDescriptors.add(createItemPropertyDescriptor(
+				((ComposeableAdapterFactory) adapterFactory)
+						.getRootAdapterFactory(),
+				getResourceLocator(),
+				getString("_UI_FeatureConfiguration_type_feature"),
+				getString("_UI_PropertyDescriptor_description",
+						"_UI_FeatureConfiguration_type_feature",
+						"_UI_FeatureConfiguration_type"),
+				SGenPackage.Literals.FEATURE_CONFIGURATION__TYPE, true, false,
+				true, null, null, null));
 	}
 
 	/**
-	 * This specifies how to implement {@link #getChildren} and is used to deduce an appropriate feature for an
-	 * {@link org.eclipse.emf.edit.command.AddCommand}, {@link org.eclipse.emf.edit.command.RemoveCommand} or
-	 * {@link org.eclipse.emf.edit.command.MoveCommand} in {@link #createCommand}.
-	 * <!-- begin-user-doc -->
-	 * <!-- end-user-doc -->
+	 * This specifies how to implement {@link #getChildren} and is used to
+	 * deduce an appropriate feature for an
+	 * {@link org.eclipse.emf.edit.command.AddCommand},
+	 * {@link org.eclipse.emf.edit.command.RemoveCommand} or
+	 * {@link org.eclipse.emf.edit.command.MoveCommand} in
+	 * {@link #createCommand}. <!-- begin-user-doc --> <!-- end-user-doc -->
+	 * 
 	 * @generated
 	 */
 	@Override
-	public Collection<? extends EStructuralFeature> getChildrenFeatures(Object object) {
+	public Collection<? extends EStructuralFeature> getChildrenFeatures(
+			Object object) {
 		if (childrenFeatures == null) {
 			super.getChildrenFeatures(object);
-			childrenFeatures.add(SGenPackage.Literals.FEATURE_CONFIGURATION__PARAMETER_VALUES);
+			childrenFeatures
+					.add(SGenPackage.Literals.FEATURE_CONFIGURATION__PARAMETER_VALUES);
 		}
 		return childrenFeatures;
 	}
 
 	/**
-	 * <!-- begin-user-doc -->
-	 * <!-- end-user-doc -->
+	 * <!-- begin-user-doc --> <!-- end-user-doc -->
+	 * 
 	 * @generated
 	 */
 	@Override
 	protected EStructuralFeature getChildFeature(Object object, Object child) {
-		// Check the type of the specified child object and return the proper feature to use for
+		// Check the type of the specified child object and return the proper
+		// feature to use for
 		// adding (see {@link AddCommand}) it as a child.
 
 		return super.getChildFeature(object, child);
 	}
 
 	/**
-	 * This returns FeatureConfiguration.gif.
-	 * <!-- begin-user-doc -->
-	 * <!-- end-user-doc -->
+	 * This returns FeatureConfiguration.gif. <!-- begin-user-doc --> <!--
+	 * end-user-doc -->
+	 * 
 	 * @generated
 	 */
 	@Override
 	public Object getImage(Object object) {
-		return overlayImage(object, getResourceLocator().getImage("full/obj16/FeatureConfiguration"));
+		return overlayImage(object,
+				getResourceLocator()
+						.getImage("full/obj16/FeatureConfiguration"));
 	}
 
 	/**
-	 * This returns the label text for the adapted class.
-	 * <!-- begin-user-doc -->
-	 * <!-- end-user-doc -->
+	 * This returns the label text for the adapted class. <!-- begin-user-doc
+	 * --> <!-- end-user-doc -->
+	 * 
 	 * @generated NOT
 	 */
 	@Override
 	public String getText(Object object) {
-		FeatureConfiguration configuration = ((FeatureConfiguration)object);
-		return configuration.getType().getName() + " feature";
+		FeatureConfiguration configuration = ((FeatureConfiguration) object);
+		FeatureType type = configuration.getType();
+		if (type != null) {
+			return type.getName() + " feature";
+		}
+		return "";
 	}
 
 	/**
-	 * This handles model notifications by calling {@link #updateChildren} to update any cached
-	 * children and by creating a viewer notification, which it passes to {@link #fireNotifyChanged}.
-	 * <!-- begin-user-doc -->
-	 * <!-- end-user-doc -->
+	 * This handles model notifications by calling {@link #updateChildren} to
+	 * update any cached children and by creating a viewer notification, which
+	 * it passes to {@link #fireNotifyChanged}. <!-- begin-user-doc --> <!--
+	 * end-user-doc -->
+	 * 
 	 * @generated
 	 */
 	@Override
@@ -154,34 +159,35 @@ public class FeatureConfigurationItemProvider
 		updateChildren(notification);
 
 		switch (notification.getFeatureID(FeatureConfiguration.class)) {
-			case SGenPackage.FEATURE_CONFIGURATION__PARAMETER_VALUES:
-				fireNotifyChanged(new ViewerNotification(notification, notification.getNotifier(), true, false));
-				return;
+		case SGenPackage.FEATURE_CONFIGURATION__PARAMETER_VALUES:
+			fireNotifyChanged(new ViewerNotification(notification,
+					notification.getNotifier(), true, false));
+			return;
 		}
 		super.notifyChanged(notification);
 	}
 
 	/**
-	 * This adds {@link org.eclipse.emf.edit.command.CommandParameter}s describing the children
-	 * that can be created under this object.
-	 * <!-- begin-user-doc -->
-	 * <!-- end-user-doc -->
+	 * This adds {@link org.eclipse.emf.edit.command.CommandParameter}s
+	 * describing the children that can be created under this object. <!--
+	 * begin-user-doc --> <!-- end-user-doc -->
+	 * 
 	 * @generated
 	 */
 	@Override
-	protected void collectNewChildDescriptors(Collection<Object> newChildDescriptors, Object object) {
+	protected void collectNewChildDescriptors(
+			Collection<Object> newChildDescriptors, Object object) {
 		super.collectNewChildDescriptors(newChildDescriptors, object);
 
-		newChildDescriptors.add
-			(createChildParameter
-				(SGenPackage.Literals.FEATURE_CONFIGURATION__PARAMETER_VALUES,
-				 SGenFactory.eINSTANCE.createFeatureParameterValue()));
+		newChildDescriptors.add(createChildParameter(
+				SGenPackage.Literals.FEATURE_CONFIGURATION__PARAMETER_VALUES,
+				SGenFactory.eINSTANCE.createFeatureParameterValue()));
 	}
 
 	/**
-	 * Return the resource locator for this item provider's resources.
-	 * <!-- begin-user-doc -->
-	 * <!-- end-user-doc -->
+	 * Return the resource locator for this item provider's resources. <!--
+	 * begin-user-doc --> <!-- end-user-doc -->
+	 * 
 	 * @generated
 	 */
 	@Override

plugins/org.yakindu.sct.model.sgen/model/emf/sgen.ecore

@@ -57,7 +57,7 @@
     <eStructuralFeatures xsi:type="ecore:EReference" name="parameter" eType="#//FeatureParameter"/>
     <eStructuralFeatures xsi:type="ecore:EReference" name="featureConfiguration" eType="#//FeatureConfiguration"
         changeable="false" eOpposite="#//FeatureConfiguration/parameterValues"/>
-    <eStructuralFeatures xsi:type="ecore:EReference" name="expression" eType="ecore:EClass ../../../org.eclipse.xtext.xbase/model/Xbase.ecore#//XExpression"
+    <eStructuralFeatures xsi:type="ecore:EReference" name="expression" eType="#//Literal"
         containment="true"/>
   </eClassifiers>
   <eClassifiers xsi:type="ecore:EClass" name="FeatureTypeLibrary">
@@ -71,4 +71,17 @@
     <eLiterals name="BOOLEAN"/>
     <eLiterals name="INTEGER" value="3"/>
   </eClassifiers>
+  <eClassifiers xsi:type="ecore:EClass" name="Literal" abstract="true"/>
+  <eClassifiers xsi:type="ecore:EClass" name="BoolLiteral" eSuperTypes="#//Literal">
+    <eStructuralFeatures xsi:type="ecore:EAttribute" name="value" eType="ecore:EDataType http://www.eclipse.org/emf/2002/Ecore#//EBoolean"/>
+  </eClassifiers>
+  <eClassifiers xsi:type="ecore:EClass" name="IntLiteral" eSuperTypes="#//Literal">
+    <eStructuralFeatures xsi:type="ecore:EAttribute" name="value" eType="ecore:EDataType http://www.eclipse.org/emf/2002/Ecore#//EInt"/>
+  </eClassifiers>
+  <eClassifiers xsi:type="ecore:EClass" name="RealLiteral" eSuperTypes="#//Literal">
+    <eStructuralFeatures xsi:type="ecore:EAttribute" name="value" eType="ecore:EDataType http://www.eclipse.org/emf/2002/Ecore#//EFloat"/>
+  </eClassifiers>
+  <eClassifiers xsi:type="ecore:EClass" name="StringLiteral" eSuperTypes="#//Literal">
+    <eStructuralFeatures xsi:type="ecore:EAttribute" name="value" eType="ecore:EDataType http://www.eclipse.org/emf/2002/Ecore#//EString"/>
+  </eClassifiers>
 </ecore:EPackage>

plugins/org.yakindu.sct.model.sgen/model/emf/sgen.genmodel

@@ -1,65 +1,79 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<genmodel:GenModel xmi:version="2.0"
-    xmlns:xmi="http://www.omg.org/XMI" xmlns:ecore="http://www.eclipse.org/emf/2002/Ecore"
-    xmlns:genmodel="http://www.eclipse.org/emf/2002/GenModel" modelDirectory="/org.yakindu.sct.model.sgen/src"
-    modelPluginID="org.yakindu.sct.model.sgen" modelName="Sgen" importerID="org.eclipse.emf.importer.ecore"
-    complianceLevel="5.0" copyrightFields="false" usedGenPackages="../../../org.yakindu.sct.model.sgraph/model/emf/sgraph.genmodel#//sgraph ../../../org.eclipse.xtext.common.types/model/JavaVMTypes.genmodel#//types ../../../org.eclipse.xtext.xbase/model/Xbase.genmodel#//xbase ../../../org.yakindu.base.types/model/base.genmodel#//base">
-  <foreignModel>sgen.ecore</foreignModel>
-  <genPackages prefix="SGen" basePackage="org.yakindu.sct.model" disposableProviderFactory="true"
-      loadInitialization="true" ecorePackage="sgen.ecore#/">
-    <genEnums typeSafeEnumCompatible="false" ecoreEnum="sgen.ecore#//ParameterTypes">
-      <genEnumLiterals ecoreEnumLiteral="sgen.ecore#//ParameterTypes/STRING"/>
-      <genEnumLiterals ecoreEnumLiteral="sgen.ecore#//ParameterTypes/FLOAT"/>
-      <genEnumLiterals ecoreEnumLiteral="sgen.ecore#//ParameterTypes/BOOLEAN"/>
-      <genEnumLiterals ecoreEnumLiteral="sgen.ecore#//ParameterTypes/INTEGER"/>
-    </genEnums>
-    <genClasses ecoreClass="sgen.ecore#//GeneratorModel">
-      <genFeatures property="None" children="true" createChild="true" ecoreFeature="ecore:EReference sgen.ecore#//GeneratorModel/entries"/>
-      <genFeatures createChild="false" ecoreFeature="ecore:EAttribute sgen.ecore#//GeneratorModel/generatorId"/>
-    </genClasses>
-    <genClasses ecoreClass="sgen.ecore#//GeneratorConfiguration">
-      <genFeatures property="None" children="true" createChild="true" ecoreFeature="ecore:EReference sgen.ecore#//GeneratorConfiguration/configurations"/>
-    </genClasses>
-    <genClasses ecoreClass="sgen.ecore#//FeatureType">
-      <genFeatures property="None" children="true" createChild="true" ecoreFeature="ecore:EReference sgen.ecore#//FeatureType/parameters"/>
-      <genFeatures property="Readonly" notify="false" createChild="false" ecoreFeature="ecore:EReference sgen.ecore#//FeatureType/library"/>
-      <genFeatures createChild="false" ecoreFeature="ecore:EAttribute sgen.ecore#//FeatureType/optional"/>
-    </genClasses>
-    <genClasses ecoreClass="sgen.ecore#//FeatureParameter">
-      <genFeatures property="None" notify="false" createChild="false" ecoreFeature="ecore:EReference sgen.ecore#//FeatureParameter/featureType"/>
-      <genFeatures createChild="false" ecoreFeature="ecore:EAttribute sgen.ecore#//FeatureParameter/optional"/>
-      <genFeatures createChild="false" ecoreFeature="ecore:EAttribute sgen.ecore#//FeatureParameter/parameterType"/>
-    </genClasses>
-    <genClasses ecoreClass="sgen.ecore#//FeatureConfiguration">
-      <genFeatures notify="false" createChild="false" propertySortChoices="true" ecoreFeature="ecore:EReference sgen.ecore#//FeatureConfiguration/type"/>
-      <genFeatures property="None" children="true" createChild="true" ecoreFeature="ecore:EReference sgen.ecore#//FeatureConfiguration/parameterValues"/>
-      <genOperations ecoreOperation="sgen.ecore#//FeatureConfiguration/getParameterValue">
-        <genParameters ecoreParameter="sgen.ecore#//FeatureConfiguration/getParameterValue/parameterName"/>
-      </genOperations>
-    </genClasses>
-    <genClasses ecoreClass="sgen.ecore#//GeneratorEntry">
-      <genFeatures notify="false" createChild="false" propertySortChoices="true" ecoreFeature="ecore:EReference sgen.ecore#//GeneratorEntry/statechart"/>
-      <genFeatures property="None" children="true" createChild="true" ecoreFeature="ecore:EReference sgen.ecore#//GeneratorEntry/features"/>
-      <genOperations ecoreOperation="sgen.ecore#//GeneratorEntry/getFeatureConfiguration">
-        <genParameters ecoreParameter="sgen.ecore#//GeneratorEntry/getFeatureConfiguration/featureName"/>
-      </genOperations>
-    </genClasses>
-    <genClasses ecoreClass="sgen.ecore#//FeatureParameterValue">
-      <genFeatures notify="false" createChild="false" propertySortChoices="true" ecoreFeature="ecore:EReference sgen.ecore#//FeatureParameterValue/parameter"/>
-      <genFeatures property="None" notify="false" createChild="false" ecoreFeature="ecore:EReference sgen.ecore#//FeatureParameterValue/featureConfiguration"/>
-      <genFeatures property="None" children="true" createChild="true" ecoreFeature="ecore:EReference sgen.ecore#//FeatureParameterValue/expression"/>
-      <genOperations ecoreOperation="sgen.ecore#//FeatureParameterValue/setValue">
-        <genParameters ecoreParameter="sgen.ecore#//FeatureParameterValue/setValue/string"/>
-      </genOperations>
-      <genOperations ecoreOperation="sgen.ecore#//FeatureParameterValue/setValue.1">
-        <genParameters ecoreParameter="sgen.ecore#//FeatureParameterValue/setValue.1/boolean"/>
-      </genOperations>
-      <genOperations ecoreOperation="sgen.ecore#//FeatureParameterValue/getStringValue"/>
-      <genOperations ecoreOperation="sgen.ecore#//FeatureParameterValue/getBooleanValue"/>
-    </genClasses>
-    <genClasses ecoreClass="sgen.ecore#//FeatureTypeLibrary">
-      <genFeatures property="None" children="true" createChild="true" ecoreFeature="ecore:EReference sgen.ecore#//FeatureTypeLibrary/types"/>
-      <genFeatures createChild="false" ecoreFeature="ecore:EAttribute sgen.ecore#//FeatureTypeLibrary/name"/>
-    </genClasses>
-  </genPackages>
-</genmodel:GenModel>
+<?xml version="1.0" encoding="UTF-8"?>
+<genmodel:GenModel xmi:version="2.0"
+    xmlns:xmi="http://www.omg.org/XMI" xmlns:ecore="http://www.eclipse.org/emf/2002/Ecore"
+    xmlns:genmodel="http://www.eclipse.org/emf/2002/GenModel" modelDirectory="/org.yakindu.sct.model.sgen/src"
+    modelPluginID="org.yakindu.sct.model.sgen" modelName="Sgen" importerID="org.eclipse.emf.importer.ecore"
+    complianceLevel="5.0" copyrightFields="false" usedGenPackages="../../../org.yakindu.base.types/model/base.genmodel#//base">
+  <foreignModel>sgen.ecore</foreignModel>
+  <genPackages prefix="SGen" basePackage="org.yakindu.sct.model" disposableProviderFactory="true"
+      loadInitialization="true" ecorePackage="sgen.ecore#/">
+    <genEnums typeSafeEnumCompatible="false" ecoreEnum="sgen.ecore#//ParameterTypes">
+      <genEnumLiterals ecoreEnumLiteral="sgen.ecore#//ParameterTypes/STRING"/>
+      <genEnumLiterals ecoreEnumLiteral="sgen.ecore#//ParameterTypes/FLOAT"/>
+      <genEnumLiterals ecoreEnumLiteral="sgen.ecore#//ParameterTypes/BOOLEAN"/>
+      <genEnumLiterals ecoreEnumLiteral="sgen.ecore#//ParameterTypes/INTEGER"/>
+    </genEnums>
+    <genClasses ecoreClass="sgen.ecore#//GeneratorModel">
+      <genFeatures property="None" children="true" createChild="true" ecoreFeature="ecore:EReference sgen.ecore#//GeneratorModel/entries"/>
+      <genFeatures createChild="false" ecoreFeature="ecore:EAttribute sgen.ecore#//GeneratorModel/generatorId"/>
+    </genClasses>
+    <genClasses ecoreClass="sgen.ecore#//GeneratorConfiguration">
+      <genFeatures property="None" children="true" createChild="true" ecoreFeature="ecore:EReference sgen.ecore#//GeneratorConfiguration/configurations"/>
+    </genClasses>
+    <genClasses ecoreClass="sgen.ecore#//FeatureType">
+      <genFeatures property="None" children="true" createChild="true" ecoreFeature="ecore:EReference sgen.ecore#//FeatureType/parameters"/>
+      <genFeatures property="Readonly" notify="false" createChild="false" ecoreFeature="ecore:EReference sgen.ecore#//FeatureType/library"/>
+      <genFeatures createChild="false" ecoreFeature="ecore:EAttribute sgen.ecore#//FeatureType/optional"/>
+    </genClasses>
+    <genClasses ecoreClass="sgen.ecore#//FeatureParameter">
+      <genFeatures property="None" notify="false" createChild="false" ecoreFeature="ecore:EReference sgen.ecore#//FeatureParameter/featureType"/>
+      <genFeatures createChild="false" ecoreFeature="ecore:EAttribute sgen.ecore#//FeatureParameter/optional"/>
+      <genFeatures createChild="false" ecoreFeature="ecore:EAttribute sgen.ecore#//FeatureParameter/parameterType"/>
+    </genClasses>
+    <genClasses ecoreClass="sgen.ecore#//FeatureConfiguration">
+      <genFeatures notify="false" createChild="false" propertySortChoices="true" ecoreFeature="ecore:EReference sgen.ecore#//FeatureConfiguration/type"/>
+      <genFeatures property="None" children="true" createChild="true" ecoreFeature="ecore:EReference sgen.ecore#//FeatureConfiguration/parameterValues"/>
+      <genOperations ecoreOperation="sgen.ecore#//FeatureConfiguration/getParameterValue">
+        <genParameters ecoreParameter="sgen.ecore#//FeatureConfiguration/getParameterValue/parameterName"/>
+      </genOperations>
+    </genClasses>
+    <genClasses ecoreClass="sgen.ecore#//GeneratorEntry">
+      <genFeatures notify="false" createChild="false" propertySortChoices="true" ecoreFeature="ecore:EReference sgen.ecore#//GeneratorEntry/elementRef"/>
+      <genFeatures property="None" children="true" createChild="true" ecoreFeature="ecore:EReference sgen.ecore#//GeneratorEntry/features"/>
+      <genFeatures createChild="false" ecoreFeature="ecore:EAttribute sgen.ecore#//GeneratorEntry/contentType"/>
+      <genOperations ecoreOperation="sgen.ecore#//GeneratorEntry/getFeatureConfiguration">
+        <genParameters ecoreParameter="sgen.ecore#//GeneratorEntry/getFeatureConfiguration/featureName"/>
+      </genOperations>
+    </genClasses>
+    <genClasses ecoreClass="sgen.ecore#//FeatureParameterValue">
+      <genFeatures notify="false" createChild="false" propertySortChoices="true" ecoreFeature="ecore:EReference sgen.ecore#//FeatureParameterValue/parameter"/>
+      <genFeatures property="None" notify="false" createChild="false" ecoreFeature="ecore:EReference sgen.ecore#//FeatureParameterValue/featureConfiguration"/>
+      <genFeatures property="None" children="true" createChild="true" ecoreFeature="ecore:EReference sgen.ecore#//FeatureParameterValue/expression"/>
+      <genOperations ecoreOperation="sgen.ecore#//FeatureParameterValue/setValue">
+        <genParameters ecoreParameter="sgen.ecore#//FeatureParameterValue/setValue/string"/>
+      </genOperations>
+      <genOperations ecoreOperation="sgen.ecore#//FeatureParameterValue/setValue.1">
+        <genParameters ecoreParameter="sgen.ecore#//FeatureParameterValue/setValue.1/boolean"/>
+      </genOperations>
+      <genOperations ecoreOperation="sgen.ecore#//FeatureParameterValue/getStringValue"/>
+      <genOperations ecoreOperation="sgen.ecore#//FeatureParameterValue/getBooleanValue"/>
+    </genClasses>
+    <genClasses ecoreClass="sgen.ecore#//FeatureTypeLibrary">
+      <genFeatures property="None" children="true" createChild="true" ecoreFeature="ecore:EReference sgen.ecore#//FeatureTypeLibrary/types"/>
+      <genFeatures createChild="false" ecoreFeature="ecore:EAttribute sgen.ecore#//FeatureTypeLibrary/name"/>
+    </genClasses>
+    <genClasses image="false" ecoreClass="sgen.ecore#//Literal"/>
+    <genClasses ecoreClass="sgen.ecore#//BoolLiteral">
+      <genFeatures createChild="false" ecoreFeature="ecore:EAttribute sgen.ecore#//BoolLiteral/value"/>
+    </genClasses>
+    <genClasses ecoreClass="sgen.ecore#//IntLiteral">
+      <genFeatures createChild="false" ecoreFeature="ecore:EAttribute sgen.ecore#//IntLiteral/value"/>
+    </genClasses>
+    <genClasses ecoreClass="sgen.ecore#//RealLiteral">
+      <genFeatures createChild="false" ecoreFeature="ecore:EAttribute sgen.ecore#//RealLiteral/value"/>
+    </genClasses>
+    <genClasses ecoreClass="sgen.ecore#//StringLiteral">
+      <genFeatures createChild="false" ecoreFeature="ecore:EAttribute sgen.ecore#//StringLiteral/value"/>
+    </genClasses>
+  </genPackages>
+</genmodel:GenModel>

plugins/org.yakindu.sct.model.sgen/src/org/yakindu/sct/model/sgen/BoolLiteral.java

@@ -0,0 +1,53 @@
+/**
+ * <copyright>
+ * </copyright>
+ *
+ * $Id$
+ */
+package org.yakindu.sct.model.sgen;
+
+
+/**
+ * <!-- begin-user-doc -->
+ * A representation of the model object '<em><b>Bool Literal</b></em>'.
+ * <!-- end-user-doc -->
+ *
+ * <p>
+ * The following features are supported:
+ * <ul>
+ *   <li>{@link org.yakindu.sct.model.sgen.BoolLiteral#isValue <em>Value</em>}</li>
+ * </ul>
+ * </p>
+ *
+ * @see org.yakindu.sct.model.sgen.SGenPackage#getBoolLiteral()
+ * @model
+ * @generated
+ */
+public interface BoolLiteral extends Literal {
+	/**
+	 * Returns the value of the '<em><b>Value</b></em>' attribute.
+	 * <!-- begin-user-doc -->
+	 * <p>
+	 * If the meaning of the '<em>Value</em>' attribute isn't clear,
+	 * there really should be more of a description here...
+	 * </p>
+	 * <!-- end-user-doc -->
+	 * @return the value of the '<em>Value</em>' attribute.
+	 * @see #setValue(boolean)
+	 * @see org.yakindu.sct.model.sgen.SGenPackage#getBoolLiteral_Value()
+	 * @model
+	 * @generated
+	 */
+	boolean isValue();
+
+	/**
+	 * Sets the value of the '{@link org.yakindu.sct.model.sgen.BoolLiteral#isValue <em>Value</em>}' attribute.
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @param value the new value of the '<em>Value</em>' attribute.
+	 * @see #isValue()
+	 * @generated
+	 */
+	void setValue(boolean value);
+
+} // BoolLiteral

plugins/org.yakindu.sct.model.sgen/src/org/yakindu/sct/model/sgen/FeatureParameterValue.java

@@ -7,7 +7,6 @@
 package org.yakindu.sct.model.sgen;
 
 import org.eclipse.emf.ecore.EObject;
-import org.eclipse.xtext.xbase.XExpression;
 
 /**
  * <!-- begin-user-doc --> A representation of the model object '
@@ -26,7 +25,6 @@ import org.eclipse.xtext.xbase.XExpression;
  * @model
  * @generated
  */
-@SuppressWarnings("restriction")
 public interface FeatureParameterValue extends EObject {
 	/**
 	 * Returns the value of the '<em><b>Parameter</b></em>' reference. <!--
@@ -85,22 +83,22 @@ public interface FeatureParameterValue extends EObject {
 	 * </p>
 	 * <!-- end-user-doc -->
 	 * @return the value of the '<em>Expression</em>' containment reference.
-	 * @see #setExpression(XExpression)
+	 * @see #setExpression(Literal)
 	 * @see org.yakindu.sct.model.sgen.SGenPackage#getFeatureParameterValue_Expression()
 	 * @model containment="true"
 	 * @generated
 	 */
-	XExpression getExpression();
+	Literal getExpression();
 
 	/**
 	 * Sets the value of the '{@link org.yakindu.sct.model.sgen.FeatureParameterValue#getExpression <em>Expression</em>}' containment reference.
-	 * <!-- begin-user-doc --> <!--
-	 * end-user-doc -->
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
 	 * @param value the new value of the '<em>Expression</em>' containment reference.
 	 * @see #getExpression()
 	 * @generated
 	 */
-	void setExpression(XExpression value);
+	void setExpression(Literal value);
 
 	/**
 	 * <!-- begin-user-doc --> <!-- end-user-doc -->
@@ -130,6 +128,5 @@ public interface FeatureParameterValue extends EObject {
 	 */
 	boolean getBooleanValue();
 	
-	Object getValue();
 
 } // FeatureParameterValue

plugins/org.yakindu.sct.model.sgen/src/org/yakindu/sct/model/sgen/IntLiteral.java

@@ -0,0 +1,53 @@
+/**
+ * <copyright>
+ * </copyright>
+ *
+ * $Id$
+ */
+package org.yakindu.sct.model.sgen;
+
+
+/**
+ * <!-- begin-user-doc -->
+ * A representation of the model object '<em><b>Int Literal</b></em>'.
+ * <!-- end-user-doc -->
+ *
+ * <p>
+ * The following features are supported:
+ * <ul>
+ *   <li>{@link org.yakindu.sct.model.sgen.IntLiteral#getValue <em>Value</em>}</li>
+ * </ul>
+ * </p>
+ *
+ * @see org.yakindu.sct.model.sgen.SGenPackage#getIntLiteral()
+ * @model
+ * @generated
+ */
+public interface IntLiteral extends Literal {
+	/**
+	 * Returns the value of the '<em><b>Value</b></em>' attribute.
+	 * <!-- begin-user-doc -->
+	 * <p>
+	 * If the meaning of the '<em>Value</em>' attribute isn't clear,
+	 * there really should be more of a description here...
+	 * </p>
+	 * <!-- end-user-doc -->
+	 * @return the value of the '<em>Value</em>' attribute.
+	 * @see #setValue(int)
+	 * @see org.yakindu.sct.model.sgen.SGenPackage#getIntLiteral_Value()
+	 * @model
+	 * @generated
+	 */
+	int getValue();
+
+	/**
+	 * Sets the value of the '{@link org.yakindu.sct.model.sgen.IntLiteral#getValue <em>Value</em>}' attribute.
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @param value the new value of the '<em>Value</em>' attribute.
+	 * @see #getValue()
+	 * @generated
+	 */
+	void setValue(int value);
+
+} // IntLiteral

plugins/org.yakindu.sct.model.sgen/src/org/yakindu/sct/model/sgen/Literal.java

@@ -0,0 +1,22 @@
+/**
+ * <copyright>
+ * </copyright>
+ *
+ * $Id$
+ */
+package org.yakindu.sct.model.sgen;
+
+import org.eclipse.emf.ecore.EObject;
+
+/**
+ * <!-- begin-user-doc -->
+ * A representation of the model object '<em><b>Literal</b></em>'.
+ * <!-- end-user-doc -->
+ *
+ *
+ * @see org.yakindu.sct.model.sgen.SGenPackage#getLiteral()
+ * @model abstract="true"
+ * @generated
+ */
+public interface Literal extends EObject {
+} // Literal

plugins/org.yakindu.sct.model.sgen/src/org/yakindu/sct/model/sgen/RealLiteral.java

@@ -0,0 +1,53 @@
+/**
+ * <copyright>
+ * </copyright>
+ *
+ * $Id$
+ */
+package org.yakindu.sct.model.sgen;
+
+
+/**
+ * <!-- begin-user-doc -->
+ * A representation of the model object '<em><b>Real Literal</b></em>'.
+ * <!-- end-user-doc -->
+ *
+ * <p>
+ * The following features are supported:
+ * <ul>
+ *   <li>{@link org.yakindu.sct.model.sgen.RealLiteral#getValue <em>Value</em>}</li>
+ * </ul>
+ * </p>
+ *
+ * @see org.yakindu.sct.model.sgen.SGenPackage#getRealLiteral()
+ * @model
+ * @generated
+ */
+public interface RealLiteral extends Literal {
+	/**
+	 * Returns the value of the '<em><b>Value</b></em>' attribute.
+	 * <!-- begin-user-doc -->
+	 * <p>
+	 * If the meaning of the '<em>Value</em>' attribute isn't clear,
+	 * there really should be more of a description here...
+	 * </p>
+	 * <!-- end-user-doc -->
+	 * @return the value of the '<em>Value</em>' attribute.
+	 * @see #setValue(float)
+	 * @see org.yakindu.sct.model.sgen.SGenPackage#getRealLiteral_Value()
+	 * @model
+	 * @generated
+	 */
+	float getValue();
+
+	/**
+	 * Sets the value of the '{@link org.yakindu.sct.model.sgen.RealLiteral#getValue <em>Value</em>}' attribute.
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @param value the new value of the '<em>Value</em>' attribute.
+	 * @see #getValue()
+	 * @generated
+	 */
+	void setValue(float value);
+
+} // RealLiteral

plugins/org.yakindu.sct.model.sgen/src/org/yakindu/sct/model/sgen/SGenFactory.java

@@ -97,6 +97,42 @@ public interface SGenFactory extends EFactory {
 	 */
 	FeatureTypeLibrary createFeatureTypeLibrary();
 
+	/**
+	 * Returns a new object of class '<em>Bool Literal</em>'.
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @return a new object of class '<em>Bool Literal</em>'.
+	 * @generated
+	 */
+	BoolLiteral createBoolLiteral();
+
+	/**
+	 * Returns a new object of class '<em>Int Literal</em>'.
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @return a new object of class '<em>Int Literal</em>'.
+	 * @generated
+	 */
+	IntLiteral createIntLiteral();
+
+	/**
+	 * Returns a new object of class '<em>Real Literal</em>'.
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @return a new object of class '<em>Real Literal</em>'.
+	 * @generated
+	 */
+	RealLiteral createRealLiteral();
+
+	/**
+	 * Returns a new object of class '<em>String Literal</em>'.
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @return a new object of class '<em>String Literal</em>'.
+	 * @generated
+	 */
+	StringLiteral createStringLiteral();
+
 	/**
 	 * Returns the package supported by this factory.
 	 * <!-- begin-user-doc -->

plugins/org.yakindu.sct.model.sgen/src/org/yakindu/sct/model/sgen/SGenPackage.java

@@ -403,6 +403,137 @@ public interface SGenPackage extends EPackage {
 	int FEATURE_TYPE_LIBRARY_FEATURE_COUNT = 2;
 
 
+	/**
+	 * The meta object id for the '{@link org.yakindu.sct.model.sgen.impl.LiteralImpl <em>Literal</em>}' class.
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @see org.yakindu.sct.model.sgen.impl.LiteralImpl
+	 * @see org.yakindu.sct.model.sgen.impl.SGenPackageImpl#getLiteral()
+	 * @generated
+	 */
+	int LITERAL = 8;
+
+	/**
+	 * The number of structural features of the '<em>Literal</em>' class.
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @generated
+	 * @ordered
+	 */
+	int LITERAL_FEATURE_COUNT = 0;
+
+	/**
+	 * The meta object id for the '{@link org.yakindu.sct.model.sgen.impl.BoolLiteralImpl <em>Bool Literal</em>}' class.
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @see org.yakindu.sct.model.sgen.impl.BoolLiteralImpl
+	 * @see org.yakindu.sct.model.sgen.impl.SGenPackageImpl#getBoolLiteral()
+	 * @generated
+	 */
+	int BOOL_LITERAL = 9;
+
+	/**
+	 * The feature id for the '<em><b>Value</b></em>' attribute.
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @generated
+	 * @ordered
+	 */
+	int BOOL_LITERAL__VALUE = LITERAL_FEATURE_COUNT + 0;
+
+	/**
+	 * The number of structural features of the '<em>Bool Literal</em>' class.
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @generated
+	 * @ordered
+	 */
+	int BOOL_LITERAL_FEATURE_COUNT = LITERAL_FEATURE_COUNT + 1;
+
+	/**
+	 * The meta object id for the '{@link org.yakindu.sct.model.sgen.impl.IntLiteralImpl <em>Int Literal</em>}' class.
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @see org.yakindu.sct.model.sgen.impl.IntLiteralImpl
+	 * @see org.yakindu.sct.model.sgen.impl.SGenPackageImpl#getIntLiteral()
+	 * @generated
+	 */
+	int INT_LITERAL = 10;
+
+	/**
+	 * The feature id for the '<em><b>Value</b></em>' attribute.
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @generated
+	 * @ordered
+	 */
+	int INT_LITERAL__VALUE = LITERAL_FEATURE_COUNT + 0;
+
+	/**
+	 * The number of structural features of the '<em>Int Literal</em>' class.
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @generated
+	 * @ordered
+	 */
+	int INT_LITERAL_FEATURE_COUNT = LITERAL_FEATURE_COUNT + 1;
+
+	/**
+	 * The meta object id for the '{@link org.yakindu.sct.model.sgen.impl.RealLiteralImpl <em>Real Literal</em>}' class.
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @see org.yakindu.sct.model.sgen.impl.RealLiteralImpl
+	 * @see org.yakindu.sct.model.sgen.impl.SGenPackageImpl#getRealLiteral()
+	 * @generated
+	 */
+	int REAL_LITERAL = 11;
+
+	/**
+	 * The feature id for the '<em><b>Value</b></em>' attribute.
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @generated
+	 * @ordered
+	 */
+	int REAL_LITERAL__VALUE = LITERAL_FEATURE_COUNT + 0;
+
+	/**
+	 * The number of structural features of the '<em>Real Literal</em>' class.
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @generated
+	 * @ordered
+	 */
+	int REAL_LITERAL_FEATURE_COUNT = LITERAL_FEATURE_COUNT + 1;
+
+	/**
+	 * The meta object id for the '{@link org.yakindu.sct.model.sgen.impl.StringLiteralImpl <em>String Literal</em>}' class.
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @see org.yakindu.sct.model.sgen.impl.StringLiteralImpl
+	 * @see org.yakindu.sct.model.sgen.impl.SGenPackageImpl#getStringLiteral()
+	 * @generated
+	 */
+	int STRING_LITERAL = 12;
+
+	/**
+	 * The feature id for the '<em><b>Value</b></em>' attribute.
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @generated
+	 * @ordered
+	 */
+	int STRING_LITERAL__VALUE = LITERAL_FEATURE_COUNT + 0;
+
+	/**
+	 * The number of structural features of the '<em>String Literal</em>' class.
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @generated
+	 * @ordered
+	 */
+	int STRING_LITERAL_FEATURE_COUNT = LITERAL_FEATURE_COUNT + 1;
+
 	/**
 	 * The meta object id for the '{@link org.yakindu.sct.model.sgen.ParameterTypes <em>Parameter Types</em>}' enum.
 	 * <!-- begin-user-doc -->
@@ -411,7 +542,7 @@ public interface SGenPackage extends EPackage {
 	 * @see org.yakindu.sct.model.sgen.impl.SGenPackageImpl#getParameterTypes()
 	 * @generated
 	 */
-	int PARAMETER_TYPES = 8;
+	int PARAMETER_TYPES = 13;
 
 
 	/**
@@ -703,6 +834,100 @@ public interface SGenPackage extends EPackage {
 	 */
 	EAttribute getFeatureTypeLibrary_Name();
 
+	/**
+	 * Returns the meta object for class '{@link org.yakindu.sct.model.sgen.Literal <em>Literal</em>}'.
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @return the meta object for class '<em>Literal</em>'.
+	 * @see org.yakindu.sct.model.sgen.Literal
+	 * @generated
+	 */
+	EClass getLiteral();
+
+	/**
+	 * Returns the meta object for class '{@link org.yakindu.sct.model.sgen.BoolLiteral <em>Bool Literal</em>}'.
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @return the meta object for class '<em>Bool Literal</em>'.
+	 * @see org.yakindu.sct.model.sgen.BoolLiteral
+	 * @generated
+	 */
+	EClass getBoolLiteral();
+
+	/**
+	 * Returns the meta object for the attribute '{@link org.yakindu.sct.model.sgen.BoolLiteral#isValue <em>Value</em>}'.
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @return the meta object for the attribute '<em>Value</em>'.
+	 * @see org.yakindu.sct.model.sgen.BoolLiteral#isValue()
+	 * @see #getBoolLiteral()
+	 * @generated
+	 */
+	EAttribute getBoolLiteral_Value();
+
+	/**
+	 * Returns the meta object for class '{@link org.yakindu.sct.model.sgen.IntLiteral <em>Int Literal</em>}'.
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @return the meta object for class '<em>Int Literal</em>'.
+	 * @see org.yakindu.sct.model.sgen.IntLiteral
+	 * @generated
+	 */
+	EClass getIntLiteral();
+
+	/**
+	 * Returns the meta object for the attribute '{@link org.yakindu.sct.model.sgen.IntLiteral#getValue <em>Value</em>}'.
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @return the meta object for the attribute '<em>Value</em>'.
+	 * @see org.yakindu.sct.model.sgen.IntLiteral#getValue()
+	 * @see #getIntLiteral()
+	 * @generated
+	 */
+	EAttribute getIntLiteral_Value();
+
+	/**
+	 * Returns the meta object for class '{@link org.yakindu.sct.model.sgen.RealLiteral <em>Real Literal</em>}'.
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @return the meta object for class '<em>Real Literal</em>'.
+	 * @see org.yakindu.sct.model.sgen.RealLiteral
+	 * @generated
+	 */
+	EClass getRealLiteral();
+
+	/**
+	 * Returns the meta object for the attribute '{@link org.yakindu.sct.model.sgen.RealLiteral#getValue <em>Value</em>}'.
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @return the meta object for the attribute '<em>Value</em>'.
+	 * @see org.yakindu.sct.model.sgen.RealLiteral#getValue()
+	 * @see #getRealLiteral()
+	 * @generated
+	 */
+	EAttribute getRealLiteral_Value();
+
+	/**
+	 * Returns the meta object for class '{@link org.yakindu.sct.model.sgen.StringLiteral <em>String Literal</em>}'.
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @return the meta object for class '<em>String Literal</em>'.
+	 * @see org.yakindu.sct.model.sgen.StringLiteral
+	 * @generated
+	 */
+	EClass getStringLiteral();
+
+	/**
+	 * Returns the meta object for the attribute '{@link org.yakindu.sct.model.sgen.StringLiteral#getValue <em>Value</em>}'.
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @return the meta object for the attribute '<em>Value</em>'.
+	 * @see org.yakindu.sct.model.sgen.StringLiteral#getValue()
+	 * @see #getStringLiteral()
+	 * @generated
+	 */
+	EAttribute getStringLiteral_Value();
+
 	/**
 	 * Returns the meta object for enum '{@link org.yakindu.sct.model.sgen.ParameterTypes <em>Parameter Types</em>}'.
 	 * <!-- begin-user-doc -->
@@ -967,6 +1192,88 @@ public interface SGenPackage extends EPackage {
 		 */
 		EAttribute FEATURE_TYPE_LIBRARY__NAME = eINSTANCE.getFeatureTypeLibrary_Name();
 
+		/**
+		 * The meta object literal for the '{@link org.yakindu.sct.model.sgen.impl.LiteralImpl <em>Literal</em>}' class.
+		 * <!-- begin-user-doc -->
+		 * <!-- end-user-doc -->
+		 * @see org.yakindu.sct.model.sgen.impl.LiteralImpl
+		 * @see org.yakindu.sct.model.sgen.impl.SGenPackageImpl#getLiteral()
+		 * @generated
+		 */
+		EClass LITERAL = eINSTANCE.getLiteral();
+
+		/**
+		 * The meta object literal for the '{@link org.yakindu.sct.model.sgen.impl.BoolLiteralImpl <em>Bool Literal</em>}' class.
+		 * <!-- begin-user-doc -->
+		 * <!-- end-user-doc -->
+		 * @see org.yakindu.sct.model.sgen.impl.BoolLiteralImpl
+		 * @see org.yakindu.sct.model.sgen.impl.SGenPackageImpl#getBoolLiteral()
+		 * @generated
+		 */
+		EClass BOOL_LITERAL = eINSTANCE.getBoolLiteral();
+
+		/**
+		 * The meta object literal for the '<em><b>Value</b></em>' attribute feature.
+		 * <!-- begin-user-doc -->
+		 * <!-- end-user-doc -->
+		 * @generated
+		 */
+		EAttribute BOOL_LITERAL__VALUE = eINSTANCE.getBoolLiteral_Value();
+
+		/**
+		 * The meta object literal for the '{@link org.yakindu.sct.model.sgen.impl.IntLiteralImpl <em>Int Literal</em>}' class.
+		 * <!-- begin-user-doc -->
+		 * <!-- end-user-doc -->
+		 * @see org.yakindu.sct.model.sgen.impl.IntLiteralImpl
+		 * @see org.yakindu.sct.model.sgen.impl.SGenPackageImpl#getIntLiteral()
+		 * @generated
+		 */
+		EClass INT_LITERAL = eINSTANCE.getIntLiteral();
+
+		/**
+		 * The meta object literal for the '<em><b>Value</b></em>' attribute feature.
+		 * <!-- begin-user-doc -->
+		 * <!-- end-user-doc -->
+		 * @generated
+		 */
+		EAttribute INT_LITERAL__VALUE = eINSTANCE.getIntLiteral_Value();
+
+		/**
+		 * The meta object literal for the '{@link org.yakindu.sct.model.sgen.impl.RealLiteralImpl <em>Real Literal</em>}' class.
+		 * <!-- begin-user-doc -->
+		 * <!-- end-user-doc -->
+		 * @see org.yakindu.sct.model.sgen.impl.RealLiteralImpl
+		 * @see org.yakindu.sct.model.sgen.impl.SGenPackageImpl#getRealLiteral()
+		 * @generated
+		 */
+		EClass REAL_LITERAL = eINSTANCE.getRealLiteral();
+
+		/**
+		 * The meta object literal for the '<em><b>Value</b></em>' attribute feature.
+		 * <!-- begin-user-doc -->
+		 * <!-- end-user-doc -->
+		 * @generated
+		 */
+		EAttribute REAL_LITERAL__VALUE = eINSTANCE.getRealLiteral_Value();
+
+		/**
+		 * The meta object literal for the '{@link org.yakindu.sct.model.sgen.impl.StringLiteralImpl <em>String Literal</em>}' class.
+		 * <!-- begin-user-doc -->
+		 * <!-- end-user-doc -->
+		 * @see org.yakindu.sct.model.sgen.impl.StringLiteralImpl
+		 * @see org.yakindu.sct.model.sgen.impl.SGenPackageImpl#getStringLiteral()
+		 * @generated
+		 */
+		EClass STRING_LITERAL = eINSTANCE.getStringLiteral();
+
+		/**
+		 * The meta object literal for the '<em><b>Value</b></em>' attribute feature.
+		 * <!-- begin-user-doc -->
+		 * <!-- end-user-doc -->
+		 * @generated
+		 */
+		EAttribute STRING_LITERAL__VALUE = eINSTANCE.getStringLiteral_Value();
+
 		/**
 		 * The meta object literal for the '{@link org.yakindu.sct.model.sgen.ParameterTypes <em>Parameter Types</em>}' enum.
 		 * <!-- begin-user-doc -->

plugins/org.yakindu.sct.model.sgen/src/org/yakindu/sct/model/sgen/StringLiteral.java

@@ -0,0 +1,53 @@
+/**
+ * <copyright>
+ * </copyright>
+ *
+ * $Id$
+ */
+package org.yakindu.sct.model.sgen;
+
+
+/**
+ * <!-- begin-user-doc -->
+ * A representation of the model object '<em><b>String Literal</b></em>'.
+ * <!-- end-user-doc -->
+ *
+ * <p>
+ * The following features are supported:
+ * <ul>
+ *   <li>{@link org.yakindu.sct.model.sgen.StringLiteral#getValue <em>Value</em>}</li>
+ * </ul>
+ * </p>
+ *
+ * @see org.yakindu.sct.model.sgen.SGenPackage#getStringLiteral()
+ * @model
+ * @generated
+ */
+public interface StringLiteral extends Literal {
+	/**
+	 * Returns the value of the '<em><b>Value</b></em>' attribute.
+	 * <!-- begin-user-doc -->
+	 * <p>
+	 * If the meaning of the '<em>Value</em>' attribute isn't clear,
+	 * there really should be more of a description here...
+	 * </p>
+	 * <!-- end-user-doc -->
+	 * @return the value of the '<em>Value</em>' attribute.
+	 * @see #setValue(String)
+	 * @see org.yakindu.sct.model.sgen.SGenPackage#getStringLiteral_Value()
+	 * @model
+	 * @generated
+	 */
+	String getValue();
+
+	/**
+	 * Sets the value of the '{@link org.yakindu.sct.model.sgen.StringLiteral#getValue <em>Value</em>}' attribute.
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @param value the new value of the '<em>Value</em>' attribute.
+	 * @see #getValue()
+	 * @generated
+	 */
+	void setValue(String value);
+
+} // StringLiteral

plugins/org.yakindu.sct.model.sgen/src/org/yakindu/sct/model/sgen/impl/BoolLiteralImpl.java

@@ -0,0 +1,166 @@
+/**
+ * <copyright>
+ * </copyright>
+ *
+ * $Id$
+ */
+package org.yakindu.sct.model.sgen.impl;
+
+import org.eclipse.emf.common.notify.Notification;
+
+import org.eclipse.emf.ecore.EClass;
+
+import org.eclipse.emf.ecore.impl.ENotificationImpl;
+
+import org.yakindu.sct.model.sgen.BoolLiteral;
+import org.yakindu.sct.model.sgen.SGenPackage;
+
+/**
+ * <!-- begin-user-doc -->
+ * An implementation of the model object '<em><b>Bool Literal</b></em>'.
+ * <!-- end-user-doc -->
+ * <p>
+ * The following features are implemented:
+ * <ul>
+ *   <li>{@link org.yakindu.sct.model.sgen.impl.BoolLiteralImpl#isValue <em>Value</em>}</li>
+ * </ul>
+ * </p>
+ *
+ * @generated
+ */
+public class BoolLiteralImpl extends LiteralImpl implements BoolLiteral {
+	/**
+	 * The default value of the '{@link #isValue() <em>Value</em>}' attribute.
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @see #isValue()
+	 * @generated
+	 * @ordered
+	 */
+	protected static final boolean VALUE_EDEFAULT = false;
+
+	/**
+	 * The cached value of the '{@link #isValue() <em>Value</em>}' attribute.
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @see #isValue()
+	 * @generated
+	 * @ordered
+	 */
+	protected boolean value = VALUE_EDEFAULT;
+
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @generated
+	 */
+	protected BoolLiteralImpl() {
+		super();
+	}
+
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @generated
+	 */
+	@Override
+	protected EClass eStaticClass() {
+		return SGenPackage.Literals.BOOL_LITERAL;
+	}
+
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @generated
+	 */
+	public boolean isValue() {
+		return value;
+	}
+
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @generated
+	 */
+	public void setValue(boolean newValue) {
+		boolean oldValue = value;
+		value = newValue;
+		if (eNotificationRequired())
+			eNotify(new ENotificationImpl(this, Notification.SET, SGenPackage.BOOL_LITERAL__VALUE, oldValue, value));
+	}
+
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @generated
+	 */
+	@Override
+	public Object eGet(int featureID, boolean resolve, boolean coreType) {
+		switch (featureID) {
+			case SGenPackage.BOOL_LITERAL__VALUE:
+				return isValue();
+		}
+		return super.eGet(featureID, resolve, coreType);
+	}
+
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @generated
+	 */
+	@Override
+	public void eSet(int featureID, Object newValue) {
+		switch (featureID) {
+			case SGenPackage.BOOL_LITERAL__VALUE:
+				setValue((Boolean)newValue);
+				return;
+		}
+		super.eSet(featureID, newValue);
+	}
+
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @generated
+	 */
+	@Override
+	public void eUnset(int featureID) {
+		switch (featureID) {
+			case SGenPackage.BOOL_LITERAL__VALUE:
+				setValue(VALUE_EDEFAULT);
+				return;
+		}
+		super.eUnset(featureID);
+	}
+
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @generated
+	 */
+	@Override
+	public boolean eIsSet(int featureID) {
+		switch (featureID) {
+			case SGenPackage.BOOL_LITERAL__VALUE:
+				return value != VALUE_EDEFAULT;
+		}
+		return super.eIsSet(featureID);
+	}
+
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @generated
+	 */
+	@Override
+	public String toString() {
+		if (eIsProxy()) return super.toString();
+
+		StringBuffer result = new StringBuffer(super.toString());
+		result.append(" (value: ");
+		result.append(value);
+		result.append(')');
+		return result.toString();
+	}
+
+} //BoolLiteralImpl

plugins/org.yakindu.sct.model.sgen/src/org/yakindu/sct/model/sgen/impl/FeatureParameterValueImpl.java

@@ -12,15 +12,14 @@ import org.eclipse.emf.ecore.EClass;
 import org.eclipse.emf.ecore.InternalEObject;
 import org.eclipse.emf.ecore.impl.ENotificationImpl;
 import org.eclipse.emf.ecore.impl.EObjectImpl;
-import org.eclipse.xtext.xbase.XBooleanLiteral;
-import org.eclipse.xtext.xbase.XExpression;
-import org.eclipse.xtext.xbase.XStringLiteral;
-import org.eclipse.xtext.xbase.XbaseFactory;
-import org.eclipse.xtext.xbase.interpreter.IExpressionInterpreter;
+import org.yakindu.sct.model.sgen.BoolLiteral;
 import org.yakindu.sct.model.sgen.FeatureConfiguration;
 import org.yakindu.sct.model.sgen.FeatureParameter;
 import org.yakindu.sct.model.sgen.FeatureParameterValue;
+import org.yakindu.sct.model.sgen.Literal;
+import org.yakindu.sct.model.sgen.SGenFactory;
 import org.yakindu.sct.model.sgen.SGenPackage;
+import org.yakindu.sct.model.sgen.StringLiteral;
 
 /**
  * <!-- begin-user-doc --> An implementation of the model object '
@@ -55,7 +54,7 @@ public class FeatureParameterValueImpl extends EObjectImpl implements
 	 * @generated
 	 * @ordered
 	 */
-	protected XExpression expression;
+	protected Literal expression;
 
 	/**
 	 * <!-- begin-user-doc --> <!-- end-user-doc -->
@@ -123,17 +122,17 @@ public class FeatureParameterValueImpl extends EObjectImpl implements
 	 * <!-- begin-user-doc --> <!-- end-user-doc -->
 	 * @generated
 	 */
-	public XExpression getExpression() {
+	public Literal getExpression() {
 		return expression;
 	}
 
 	/**
-	 * <!-- begin-user-doc --> <!-- end-user-doc -->
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
 	 * @generated
 	 */
-	public NotificationChain basicSetExpression(XExpression newExpression,
-			NotificationChain msgs) {
-		XExpression oldExpression = expression;
+	public NotificationChain basicSetExpression(Literal newExpression, NotificationChain msgs) {
+		Literal oldExpression = expression;
 		expression = newExpression;
 		if (eNotificationRequired()) {
 			ENotificationImpl notification = new ENotificationImpl(this, Notification.SET, SGenPackage.FEATURE_PARAMETER_VALUE__EXPRESSION, oldExpression, newExpression);
@@ -143,10 +142,11 @@ public class FeatureParameterValueImpl extends EObjectImpl implements
 	}
 
 	/**
-	 * <!-- begin-user-doc --> <!-- end-user-doc -->
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
 	 * @generated
 	 */
-	public void setExpression(XExpression newExpression) {
+	public void setExpression(Literal newExpression) {
 		if (newExpression != expression) {
 			NotificationChain msgs = null;
 			if (expression != null)
@@ -166,7 +166,7 @@ public class FeatureParameterValueImpl extends EObjectImpl implements
 	 * @generated NOT
 	 */
 	public void setValue(String string) {
-		XStringLiteral literal = XbaseFactory.eINSTANCE.createXStringLiteral();
+		StringLiteral literal = SGenFactory.eINSTANCE.createStringLiteral();
 		literal.setValue(string);
 		setExpression(literal);
 	}
@@ -177,9 +177,8 @@ public class FeatureParameterValueImpl extends EObjectImpl implements
 	 * @generated NOT
 	 */
 	public void setValue(boolean boolean_) {
-		XBooleanLiteral literal = XbaseFactory.eINSTANCE
-				.createXBooleanLiteral();
-		literal.setIsTrue(boolean_);
+		BoolLiteral literal = SGenFactory.eINSTANCE.createBoolLiteral();
+		literal.setValue(boolean_);
 		setExpression(literal);
 	}
 
@@ -189,14 +188,7 @@ public class FeatureParameterValueImpl extends EObjectImpl implements
 	 * @generated NOT
 	 */
 	public String getStringValue() {
-		return (String) getInterpreter().evaluate(getExpression()).getResult();
-	}
-
-	private IExpressionInterpreter getInterpreter() {
-		if (eResource() instanceof IExpressionInterpreter) {
-			return (IExpressionInterpreter) eResource();
-		}
-		throw new IllegalStateException();
+		return ((StringLiteral)expression).getValue();
 	}
 
 	/**
@@ -205,17 +197,9 @@ public class FeatureParameterValueImpl extends EObjectImpl implements
 	 * @generated NOT
 	 */
 	public boolean getBooleanValue() {
-		return (Boolean) getInterpreter().evaluate(getExpression()).getResult();
+		return ((BoolLiteral)expression).isValue();
 	}
 
-	/**
-	 * <!-- begin-user-doc --> <!-- end-user-doc -->
-	 * 
-	 * @generated NOT
-	 */
-	public Object getValue() {
-		return getInterpreter().evaluate(getExpression()).getResult();
-	}
 
 	/**
 	 * <!-- begin-user-doc --> <!-- end-user-doc -->
@@ -292,7 +276,7 @@ public class FeatureParameterValueImpl extends EObjectImpl implements
 				setParameter((FeatureParameter)newValue);
 				return;
 			case SGenPackage.FEATURE_PARAMETER_VALUE__EXPRESSION:
-				setExpression((XExpression)newValue);
+				setExpression((Literal)newValue);
 				return;
 		}
 		super.eSet(featureID, newValue);
@@ -309,7 +293,7 @@ public class FeatureParameterValueImpl extends EObjectImpl implements
 				setParameter((FeatureParameter)null);
 				return;
 			case SGenPackage.FEATURE_PARAMETER_VALUE__EXPRESSION:
-				setExpression((XExpression)null);
+				setExpression((Literal)null);
 				return;
 		}
 		super.eUnset(featureID);

plugins/org.yakindu.sct.model.sgen/src/org/yakindu/sct/model/sgen/impl/IntLiteralImpl.java

@@ -0,0 +1,161 @@
+/**
+ * <copyright>
+ * </copyright>
+ *
+ * $Id$
+ */
+package org.yakindu.sct.model.sgen.impl;
+
+import org.eclipse.emf.common.notify.Notification;
+
+import org.eclipse.emf.ecore.EClass;
+
+import org.eclipse.emf.ecore.impl.ENotificationImpl;
+
+import org.yakindu.sct.model.sgen.IntLiteral;
+import org.yakindu.sct.model.sgen.SGenPackage;
+
+/**
+ * <!-- begin-user-doc --> An implementation of the model object '
+ * <em><b>Int Literal</b></em>'. <!-- end-user-doc -->
+ * <p>
+ * The following features are implemented:
+ * <ul>
+ * <li>{@link org.yakindu.sct.model.sgen.impl.IntLiteralImpl#getValue <em>Value
+ * </em>}</li>
+ * </ul>
+ * </p>
+ * 
+ * @generated
+ */
+public class IntLiteralImpl extends LiteralImpl implements IntLiteral {
+	/**
+	 * The default value of the '{@link #getValue() <em>Value</em>}' attribute.
+	 * <!-- begin-user-doc --> <!-- end-user-doc -->
+	 * 
+	 * @see #getValue()
+	 * @generated
+	 * @ordered
+	 */
+	protected static final int VALUE_EDEFAULT = 0;
+
+	/**
+	 * The cached value of the '{@link #getValue() <em>Value</em>}' attribute.
+	 * <!-- begin-user-doc --> <!-- end-user-doc -->
+	 * 
+	 * @see #getValue()
+	 * @generated
+	 * @ordered
+	 */
+	protected int value = VALUE_EDEFAULT;
+
+	/**
+	 * <!-- begin-user-doc --> <!-- end-user-doc -->
+	 * 
+	 * @generated
+	 */
+	protected IntLiteralImpl() {
+		super();
+	}
+
+	/**
+	 * <!-- begin-user-doc --> <!-- end-user-doc -->
+	 * 
+	 * @generated
+	 */
+	@Override
+	protected EClass eStaticClass() {
+		return SGenPackage.Literals.INT_LITERAL;
+	}
+
+	/**
+	 * <!-- begin-user-doc --> <!-- end-user-doc -->
+	 * 
+	 * @generated
+	 */
+	public int getValue() {
+		return value;
+	}
+
+	/**
+	 * <!-- begin-user-doc --> <!-- end-user-doc -->
+	 * 
+	 * @generated
+	 */
+	public void setValue(int newValue) {
+		int oldValue = value;
+		value = newValue;
+		if (eNotificationRequired())
+			eNotify(new ENotificationImpl(this, Notification.SET,
+					SGenPackage.INT_LITERAL__VALUE, oldValue, value));
+	}
+
+	/**
+	 * <!-- begin-user-doc --> <!-- end-user-doc -->
+	 * 
+	 * @generated
+	 */
+	@Override
+	public Object eGet(int featureID, boolean resolve, boolean coreType) {
+		switch (featureID) {
+		case SGenPackage.INT_LITERAL__VALUE:
+			return getValue();
+		}
+		return super.eGet(featureID, resolve, coreType);
+	}
+
+	/**
+	 * <!-- begin-user-doc --> <!-- end-user-doc -->
+	 * 
+	 * @generated
+	 */
+	@Override
+	public void eSet(int featureID, Object newValue) {
+		switch (featureID) {
+		case SGenPackage.INT_LITERAL__VALUE:
+			setValue((Integer) newValue);
+			return;
+		}
+		super.eSet(featureID, newValue);
+	}
+
+	/**
+	 * <!-- begin-user-doc --> <!-- end-user-doc -->
+	 * 
+	 * @generated
+	 */
+	@Override
+	public void eUnset(int featureID) {
+		switch (featureID) {
+		case SGenPackage.INT_LITERAL__VALUE:
+			setValue(VALUE_EDEFAULT);
+			return;
+		}
+		super.eUnset(featureID);
+	}
+
+	/**
+	 * <!-- begin-user-doc --> <!-- end-user-doc -->
+	 * 
+	 * @generated
+	 */
+	@Override
+	public boolean eIsSet(int featureID) {
+		switch (featureID) {
+		case SGenPackage.INT_LITERAL__VALUE:
+			return value != VALUE_EDEFAULT;
+		}
+		return super.eIsSet(featureID);
+	}
+
+	/**
+	 * <!-- begin-user-doc --> <!-- end-user-doc -->
+	 * 
+	 * @generated NOT
+	 */
+	@Override
+	public String toString() {
+		return String.valueOf(getValue());
+	}
+
+} // IntLiteralImpl

plugins/org.yakindu.sct.model.sgen/src/org/yakindu/sct/model/sgen/impl/LiteralImpl.java

@@ -0,0 +1,46 @@
+/**
+ * <copyright>
+ * </copyright>
+ *
+ * $Id$
+ */
+package org.yakindu.sct.model.sgen.impl;
+
+import org.eclipse.emf.ecore.EClass;
+
+import org.eclipse.emf.ecore.impl.EObjectImpl;
+
+import org.yakindu.sct.model.sgen.Literal;
+import org.yakindu.sct.model.sgen.SGenPackage;
+
+/**
+ * <!-- begin-user-doc -->
+ * An implementation of the model object '<em><b>Literal</b></em>'.
+ * <!-- end-user-doc -->
+ * <p>
+ * </p>
+ *
+ * @generated
+ */
+public abstract class LiteralImpl extends EObjectImpl implements Literal {
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @generated
+	 */
+	protected LiteralImpl() {
+		super();
+	}
+
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @generated
+	 */
+	@Override
+	protected EClass eStaticClass() {
+		return SGenPackage.Literals.LITERAL;
+	}
+	
+
+} //LiteralImpl

plugins/org.yakindu.sct.model.sgen/src/org/yakindu/sct/model/sgen/impl/RealLiteralImpl.java

@@ -0,0 +1,160 @@
+/**
+ * <copyright>
+ * </copyright>
+ *
+ * $Id$
+ */
+package org.yakindu.sct.model.sgen.impl;
+
+import org.eclipse.emf.common.notify.Notification;
+
+import org.eclipse.emf.ecore.EClass;
+
+import org.eclipse.emf.ecore.impl.ENotificationImpl;
+
+import org.yakindu.sct.model.sgen.RealLiteral;
+import org.yakindu.sct.model.sgen.SGenPackage;
+
+/**
+ * <!-- begin-user-doc -->
+ * An implementation of the model object '<em><b>Real Literal</b></em>'.
+ * <!-- end-user-doc -->
+ * <p>
+ * The following features are implemented:
+ * <ul>
+ *   <li>{@link org.yakindu.sct.model.sgen.impl.RealLiteralImpl#getValue <em>Value</em>}</li>
+ * </ul>
+ * </p>
+ *
+ * @generated
+ */
+public class RealLiteralImpl extends LiteralImpl implements RealLiteral {
+	/**
+	 * The default value of the '{@link #getValue() <em>Value</em>}' attribute.
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @see #getValue()
+	 * @generated
+	 * @ordered
+	 */
+	protected static final float VALUE_EDEFAULT = 0.0F;
+
+	/**
+	 * The cached value of the '{@link #getValue() <em>Value</em>}' attribute.
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @see #getValue()
+	 * @generated
+	 * @ordered
+	 */
+	protected float value = VALUE_EDEFAULT;
+
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @generated
+	 */
+	protected RealLiteralImpl() {
+		super();
+	}
+
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @generated
+	 */
+	@Override
+	protected EClass eStaticClass() {
+		return SGenPackage.Literals.REAL_LITERAL;
+	}
+
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @generated
+	 */
+	public float getValue() {
+		return value;
+	}
+
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @generated
+	 */
+	public void setValue(float newValue) {
+		float oldValue = value;
+		value = newValue;
+		if (eNotificationRequired())
+			eNotify(new ENotificationImpl(this, Notification.SET, SGenPackage.REAL_LITERAL__VALUE, oldValue, value));
+	}
+
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @generated
+	 */
+	@Override
+	public Object eGet(int featureID, boolean resolve, boolean coreType) {
+		switch (featureID) {
+			case SGenPackage.REAL_LITERAL__VALUE:
+				return getValue();
+		}
+		return super.eGet(featureID, resolve, coreType);
+	}
+
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @generated
+	 */
+	@Override
+	public void eSet(int featureID, Object newValue) {
+		switch (featureID) {
+			case SGenPackage.REAL_LITERAL__VALUE:
+				setValue((Float)newValue);
+				return;
+		}
+		super.eSet(featureID, newValue);
+	}
+
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @generated
+	 */
+	@Override
+	public void eUnset(int featureID) {
+		switch (featureID) {
+			case SGenPackage.REAL_LITERAL__VALUE:
+				setValue(VALUE_EDEFAULT);
+				return;
+		}
+		super.eUnset(featureID);
+	}
+
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @generated
+	 */
+	@Override
+	public boolean eIsSet(int featureID) {
+		switch (featureID) {
+			case SGenPackage.REAL_LITERAL__VALUE:
+				return value != VALUE_EDEFAULT;
+		}
+		return super.eIsSet(featureID);
+	}
+
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @generated NOT
+	 */
+	@Override
+	public String toString() {
+		return String.valueOf(getValue());
+	}
+
+} //RealLiteralImpl

plugins/org.yakindu.sct.model.sgen/src/org/yakindu/sct/model/sgen/impl/SGenFactoryImpl.java

@@ -12,6 +12,7 @@ import org.eclipse.emf.ecore.EObject;
 import org.eclipse.emf.ecore.EPackage;
 import org.eclipse.emf.ecore.impl.EFactoryImpl;
 import org.eclipse.emf.ecore.plugin.EcorePlugin;
+import org.yakindu.sct.model.sgen.*;
 import org.yakindu.sct.model.sgen.FeatureConfiguration;
 import org.yakindu.sct.model.sgen.FeatureParameter;
 import org.yakindu.sct.model.sgen.FeatureParameterValue;
@@ -76,6 +77,10 @@ public class SGenFactoryImpl extends EFactoryImpl implements SGenFactory {
 			case SGenPackage.GENERATOR_ENTRY: return createGeneratorEntry();
 			case SGenPackage.FEATURE_PARAMETER_VALUE: return createFeatureParameterValue();
 			case SGenPackage.FEATURE_TYPE_LIBRARY: return createFeatureTypeLibrary();
+			case SGenPackage.BOOL_LITERAL: return createBoolLiteral();
+			case SGenPackage.INT_LITERAL: return createIntLiteral();
+			case SGenPackage.REAL_LITERAL: return createRealLiteral();
+			case SGenPackage.STRING_LITERAL: return createStringLiteral();
 			default:
 				throw new IllegalArgumentException("The class '" + eClass.getName() + "' is not a valid classifier");
 		}
@@ -191,6 +196,46 @@ public class SGenFactoryImpl extends EFactoryImpl implements SGenFactory {
 		return featureTypeLibrary;
 	}
 
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @generated
+	 */
+	public BoolLiteral createBoolLiteral() {
+		BoolLiteralImpl boolLiteral = new BoolLiteralImpl();
+		return boolLiteral;
+	}
+
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @generated
+	 */
+	public IntLiteral createIntLiteral() {
+		IntLiteralImpl intLiteral = new IntLiteralImpl();
+		return intLiteral;
+	}
+
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @generated
+	 */
+	public RealLiteral createRealLiteral() {
+		RealLiteralImpl realLiteral = new RealLiteralImpl();
+		return realLiteral;
+	}
+
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @generated
+	 */
+	public StringLiteral createStringLiteral() {
+		StringLiteralImpl stringLiteral = new StringLiteralImpl();
+		return stringLiteral;
+	}
+
 	/**
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->

plugins/org.yakindu.sct.model.sgen/src/org/yakindu/sct/model/sgen/impl/SGenPackageImpl.java

@@ -20,6 +20,7 @@ import org.eclipse.emf.ecore.EReference;
 import org.eclipse.emf.ecore.impl.EPackageImpl;
 import org.eclipse.emf.ecore.resource.Resource;
 import org.eclipse.emf.ecore.xmi.impl.EcoreResourceFactoryImpl;
+import org.yakindu.base.base.BasePackage;
 import org.eclipse.xtext.xbase.XbasePackage;
 import org.yakindu.sct.model.sgen.SGenFactory;
 import org.yakindu.sct.model.sgen.SGenPackage;
@@ -96,6 +97,41 @@ public class SGenPackageImpl extends EPackageImpl implements SGenPackage {
 	 */
 	private EClass featureTypeLibraryEClass = null;
 
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @generated
+	 */
+	private EClass literalEClass = null;
+
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @generated
+	 */
+	private EClass boolLiteralEClass = null;
+
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @generated
+	 */
+	private EClass intLiteralEClass = null;
+
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @generated
+	 */
+	private EClass realLiteralEClass = null;
+
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @generated
+	 */
+	private EClass stringLiteralEClass = null;
+
 	/**
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
@@ -148,8 +184,7 @@ public class SGenPackageImpl extends EPackageImpl implements SGenPackage {
 		isInited = true;
 
 		// Initialize simple dependencies
-		SGraphPackage.eINSTANCE.eClass();
-		XbasePackage.eINSTANCE.eClass();
+		BasePackage.eINSTANCE.eClass();
 
 		// Load packages
 		theSGenPackage.loadPackage();
@@ -433,6 +468,102 @@ public class SGenPackageImpl extends EPackageImpl implements SGenPackage {
         return (EAttribute)getFeatureTypeLibrary().getEStructuralFeatures().get(1);
 	}
 
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @generated
+	 */
+	public EClass getLiteral() {
+		if (literalEClass == null) {
+			literalEClass = (EClass)EPackage.Registry.INSTANCE.getEPackage(SGenPackage.eNS_URI).getEClassifiers().get(9);
+		}
+		return literalEClass;
+	}
+
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @generated
+	 */
+	public EClass getBoolLiteral() {
+		if (boolLiteralEClass == null) {
+			boolLiteralEClass = (EClass)EPackage.Registry.INSTANCE.getEPackage(SGenPackage.eNS_URI).getEClassifiers().get(10);
+		}
+		return boolLiteralEClass;
+	}
+
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @generated
+	 */
+	public EAttribute getBoolLiteral_Value() {
+        return (EAttribute)getBoolLiteral().getEStructuralFeatures().get(0);
+	}
+
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @generated
+	 */
+	public EClass getIntLiteral() {
+		if (intLiteralEClass == null) {
+			intLiteralEClass = (EClass)EPackage.Registry.INSTANCE.getEPackage(SGenPackage.eNS_URI).getEClassifiers().get(11);
+		}
+		return intLiteralEClass;
+	}
+
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @generated
+	 */
+	public EAttribute getIntLiteral_Value() {
+        return (EAttribute)getIntLiteral().getEStructuralFeatures().get(0);
+	}
+
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @generated
+	 */
+	public EClass getRealLiteral() {
+		if (realLiteralEClass == null) {
+			realLiteralEClass = (EClass)EPackage.Registry.INSTANCE.getEPackage(SGenPackage.eNS_URI).getEClassifiers().get(12);
+		}
+		return realLiteralEClass;
+	}
+
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @generated
+	 */
+	public EAttribute getRealLiteral_Value() {
+        return (EAttribute)getRealLiteral().getEStructuralFeatures().get(0);
+	}
+
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @generated
+	 */
+	public EClass getStringLiteral() {
+		if (stringLiteralEClass == null) {
+			stringLiteralEClass = (EClass)EPackage.Registry.INSTANCE.getEPackage(SGenPackage.eNS_URI).getEClassifiers().get(13);
+		}
+		return stringLiteralEClass;
+	}
+
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @generated
+	 */
+	public EAttribute getStringLiteral_Value() {
+        return (EAttribute)getStringLiteral().getEStructuralFeatures().get(0);
+	}
+
 	/**
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->

plugins/org.yakindu.sct.model.sgen/src/org/yakindu/sct/model/sgen/impl/StringLiteralImpl.java

@@ -0,0 +1,160 @@
+/**
+ * <copyright>
+ * </copyright>
+ *
+ * $Id$
+ */
+package org.yakindu.sct.model.sgen.impl;
+
+import org.eclipse.emf.common.notify.Notification;
+
+import org.eclipse.emf.ecore.EClass;
+
+import org.eclipse.emf.ecore.impl.ENotificationImpl;
+
+import org.yakindu.sct.model.sgen.SGenPackage;
+import org.yakindu.sct.model.sgen.StringLiteral;
+
+/**
+ * <!-- begin-user-doc -->
+ * An implementation of the model object '<em><b>String Literal</b></em>'.
+ * <!-- end-user-doc -->
+ * <p>
+ * The following features are implemented:
+ * <ul>
+ *   <li>{@link org.yakindu.sct.model.sgen.impl.StringLiteralImpl#getValue <em>Value</em>}</li>
+ * </ul>
+ * </p>
+ *
+ * @generated
+ */
+public class StringLiteralImpl extends LiteralImpl implements StringLiteral {
+	/**
+	 * The default value of the '{@link #getValue() <em>Value</em>}' attribute.
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @see #getValue()
+	 * @generated
+	 * @ordered
+	 */
+	protected static final String VALUE_EDEFAULT = null;
+
+	/**
+	 * The cached value of the '{@link #getValue() <em>Value</em>}' attribute.
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @see #getValue()
+	 * @generated
+	 * @ordered
+	 */
+	protected String value = VALUE_EDEFAULT;
+
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @generated
+	 */
+	protected StringLiteralImpl() {
+		super();
+	}
+
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @generated
+	 */
+	@Override
+	protected EClass eStaticClass() {
+		return SGenPackage.Literals.STRING_LITERAL;
+	}
+
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @generated
+	 */
+	public String getValue() {
+		return value;
+	}
+
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @generated
+	 */
+	public void setValue(String newValue) {
+		String oldValue = value;
+		value = newValue;
+		if (eNotificationRequired())
+			eNotify(new ENotificationImpl(this, Notification.SET, SGenPackage.STRING_LITERAL__VALUE, oldValue, value));
+	}
+
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @generated
+	 */
+	@Override
+	public Object eGet(int featureID, boolean resolve, boolean coreType) {
+		switch (featureID) {
+			case SGenPackage.STRING_LITERAL__VALUE:
+				return getValue();
+		}
+		return super.eGet(featureID, resolve, coreType);
+	}
+
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @generated
+	 */
+	@Override
+	public void eSet(int featureID, Object newValue) {
+		switch (featureID) {
+			case SGenPackage.STRING_LITERAL__VALUE:
+				setValue((String)newValue);
+				return;
+		}
+		super.eSet(featureID, newValue);
+	}
+
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @generated
+	 */
+	@Override
+	public void eUnset(int featureID) {
+		switch (featureID) {
+			case SGenPackage.STRING_LITERAL__VALUE:
+				setValue(VALUE_EDEFAULT);
+				return;
+		}
+		super.eUnset(featureID);
+	}
+
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @generated
+	 */
+	@Override
+	public boolean eIsSet(int featureID) {
+		switch (featureID) {
+			case SGenPackage.STRING_LITERAL__VALUE:
+				return VALUE_EDEFAULT == null ? value != null : !VALUE_EDEFAULT.equals(value);
+		}
+		return super.eIsSet(featureID);
+	}
+
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @generated NOT
+	 */
+	@Override
+	public String toString() {
+		return String.valueOf(getValue());
+	}
+
+} //StringLiteralImpl

plugins/org.yakindu.sct.model.sgen/src/org/yakindu/sct/model/sgen/impl/sgen.ecore

@@ -57,7 +57,7 @@
     <eStructuralFeatures xsi:type="ecore:EReference" name="parameter" eType="#//FeatureParameter"/>
     <eStructuralFeatures xsi:type="ecore:EReference" name="featureConfiguration" eType="#//FeatureConfiguration"
         changeable="false" eOpposite="#//FeatureConfiguration/parameterValues"/>
-    <eStructuralFeatures xsi:type="ecore:EReference" name="expression" eType="ecore:EClass http://www.eclipse.org/xtext/xbase/Xbase#//XExpression"
+    <eStructuralFeatures xsi:type="ecore:EReference" name="expression" eType="#//Literal"
         containment="true"/>
   </eClassifiers>
   <eClassifiers xsi:type="ecore:EClass" name="FeatureTypeLibrary">
@@ -71,4 +71,17 @@
     <eLiterals name="BOOLEAN"/>
     <eLiterals name="INTEGER" value="3"/>
   </eClassifiers>
+  <eClassifiers xsi:type="ecore:EClass" name="Literal" abstract="true"/>
+  <eClassifiers xsi:type="ecore:EClass" name="BoolLiteral" eSuperTypes="#//Literal">
+    <eStructuralFeatures xsi:type="ecore:EAttribute" name="value" eType="ecore:EDataType http://www.eclipse.org/emf/2002/Ecore#//EBoolean"/>
+  </eClassifiers>
+  <eClassifiers xsi:type="ecore:EClass" name="IntLiteral" eSuperTypes="#//Literal">
+    <eStructuralFeatures xsi:type="ecore:EAttribute" name="value" eType="ecore:EDataType http://www.eclipse.org/emf/2002/Ecore#//EInt"/>
+  </eClassifiers>
+  <eClassifiers xsi:type="ecore:EClass" name="RealLiteral" eSuperTypes="#//Literal">
+    <eStructuralFeatures xsi:type="ecore:EAttribute" name="value" eType="ecore:EDataType http://www.eclipse.org/emf/2002/Ecore#//EFloat"/>
+  </eClassifiers>
+  <eClassifiers xsi:type="ecore:EClass" name="StringLiteral" eSuperTypes="#//Literal">
+    <eStructuralFeatures xsi:type="ecore:EAttribute" name="value" eType="ecore:EDataType http://www.eclipse.org/emf/2002/Ecore#//EString"/>
+  </eClassifiers>
 </ecore:EPackage>

plugins/org.yakindu.sct.model.sgen/src/org/yakindu/sct/model/sgen/util/SGenAdapterFactory.java

@@ -11,6 +11,7 @@ import org.eclipse.emf.common.notify.Notifier;
 import org.eclipse.emf.common.notify.impl.AdapterFactoryImpl;
 import org.eclipse.emf.ecore.EObject;
 import org.yakindu.base.base.NamedElement;
+import org.yakindu.sct.model.sgen.*;
 import org.yakindu.sct.model.sgen.FeatureConfiguration;
 import org.yakindu.sct.model.sgen.FeatureParameter;
 import org.yakindu.sct.model.sgen.FeatureParameterValue;
@@ -110,6 +111,26 @@ public class SGenAdapterFactory extends AdapterFactoryImpl {
 				return createFeatureTypeLibraryAdapter();
 			}
 			@Override
+			public Adapter caseLiteral(Literal object) {
+				return createLiteralAdapter();
+			}
+			@Override
+			public Adapter caseBoolLiteral(BoolLiteral object) {
+				return createBoolLiteralAdapter();
+			}
+			@Override
+			public Adapter caseIntLiteral(IntLiteral object) {
+				return createIntLiteralAdapter();
+			}
+			@Override
+			public Adapter caseRealLiteral(RealLiteral object) {
+				return createRealLiteralAdapter();
+			}
+			@Override
+			public Adapter caseStringLiteral(StringLiteral object) {
+				return createStringLiteralAdapter();
+			}
+			@Override
 			public Adapter caseNamedElement(NamedElement object) {
 				return createNamedElementAdapter();
 			}
@@ -245,6 +266,76 @@ public class SGenAdapterFactory extends AdapterFactoryImpl {
 		return null;
 	}
 
+	/**
+	 * Creates a new adapter for an object of class '{@link org.yakindu.sct.model.sgen.Literal <em>Literal</em>}'.
+	 * <!-- begin-user-doc -->
+	 * This default implementation returns null so that we can easily ignore cases;
+	 * it's useful to ignore a case when inheritance will catch all the cases anyway.
+	 * <!-- end-user-doc -->
+	 * @return the new adapter.
+	 * @see org.yakindu.sct.model.sgen.Literal
+	 * @generated
+	 */
+	public Adapter createLiteralAdapter() {
+		return null;
+	}
+
+	/**
+	 * Creates a new adapter for an object of class '{@link org.yakindu.sct.model.sgen.BoolLiteral <em>Bool Literal</em>}'.
+	 * <!-- begin-user-doc -->
+	 * This default implementation returns null so that we can easily ignore cases;
+	 * it's useful to ignore a case when inheritance will catch all the cases anyway.
+	 * <!-- end-user-doc -->
+	 * @return the new adapter.
+	 * @see org.yakindu.sct.model.sgen.BoolLiteral
+	 * @generated
+	 */
+	public Adapter createBoolLiteralAdapter() {
+		return null;
+	}
+
+	/**
+	 * Creates a new adapter for an object of class '{@link org.yakindu.sct.model.sgen.IntLiteral <em>Int Literal</em>}'.
+	 * <!-- begin-user-doc -->
+	 * This default implementation returns null so that we can easily ignore cases;
+	 * it's useful to ignore a case when inheritance will catch all the cases anyway.
+	 * <!-- end-user-doc -->
+	 * @return the new adapter.
+	 * @see org.yakindu.sct.model.sgen.IntLiteral
+	 * @generated
+	 */
+	public Adapter createIntLiteralAdapter() {
+		return null;
+	}
+
+	/**
+	 * Creates a new adapter for an object of class '{@link org.yakindu.sct.model.sgen.RealLiteral <em>Real Literal</em>}'.
+	 * <!-- begin-user-doc -->
+	 * This default implementation returns null so that we can easily ignore cases;
+	 * it's useful to ignore a case when inheritance will catch all the cases anyway.
+	 * <!-- end-user-doc -->
+	 * @return the new adapter.
+	 * @see org.yakindu.sct.model.sgen.RealLiteral
+	 * @generated
+	 */
+	public Adapter createRealLiteralAdapter() {
+		return null;
+	}
+
+	/**
+	 * Creates a new adapter for an object of class '{@link org.yakindu.sct.model.sgen.StringLiteral <em>String Literal</em>}'.
+	 * <!-- begin-user-doc -->
+	 * This default implementation returns null so that we can easily ignore cases;
+	 * it's useful to ignore a case when inheritance will catch all the cases anyway.
+	 * <!-- end-user-doc -->
+	 * @return the new adapter.
+	 * @see org.yakindu.sct.model.sgen.StringLiteral
+	 * @generated
+	 */
+	public Adapter createStringLiteralAdapter() {
+		return null;
+	}
+
 	/**
 	 * Creates a new adapter for an object of class '{@link org.yakindu.base.base.NamedElement <em>Named Element</em>}'.
 	 * <!-- begin-user-doc -->

plugins/org.yakindu.sct.model.sgen/src/org/yakindu/sct/model/sgen/util/SGenSwitch.java

@@ -10,6 +10,7 @@ import org.eclipse.emf.ecore.EObject;
 import org.eclipse.emf.ecore.EPackage;
 import org.eclipse.emf.ecore.util.Switch;
 import org.yakindu.base.base.NamedElement;
+import org.yakindu.sct.model.sgen.*;
 import org.yakindu.sct.model.sgen.FeatureConfiguration;
 import org.yakindu.sct.model.sgen.FeatureParameter;
 import org.yakindu.sct.model.sgen.FeatureParameterValue;
@@ -127,6 +128,40 @@ public class SGenSwitch<T> extends Switch<T> {
 				if (result == null) result = defaultCase(theEObject);
 				return result;
 			}
+			case SGenPackage.LITERAL: {
+				Literal literal = (Literal)theEObject;
+				T result = caseLiteral(literal);
+				if (result == null) result = defaultCase(theEObject);
+				return result;
+			}
+			case SGenPackage.BOOL_LITERAL: {
+				BoolLiteral boolLiteral = (BoolLiteral)theEObject;
+				T result = caseBoolLiteral(boolLiteral);
+				if (result == null) result = caseLiteral(boolLiteral);
+				if (result == null) result = defaultCase(theEObject);
+				return result;
+			}
+			case SGenPackage.INT_LITERAL: {
+				IntLiteral intLiteral = (IntLiteral)theEObject;
+				T result = caseIntLiteral(intLiteral);
+				if (result == null) result = caseLiteral(intLiteral);
+				if (result == null) result = defaultCase(theEObject);
+				return result;
+			}
+			case SGenPackage.REAL_LITERAL: {
+				RealLiteral realLiteral = (RealLiteral)theEObject;
+				T result = caseRealLiteral(realLiteral);
+				if (result == null) result = caseLiteral(realLiteral);
+				if (result == null) result = defaultCase(theEObject);
+				return result;
+			}
+			case SGenPackage.STRING_LITERAL: {
+				StringLiteral stringLiteral = (StringLiteral)theEObject;
+				T result = caseStringLiteral(stringLiteral);
+				if (result == null) result = caseLiteral(stringLiteral);
+				if (result == null) result = defaultCase(theEObject);
+				return result;
+			}
 			default: return defaultCase(theEObject);
 		}
 	}
@@ -251,6 +286,81 @@ public class SGenSwitch<T> extends Switch<T> {
 		return null;
 	}
 
+	/**
+	 * Returns the result of interpreting the object as an instance of '<em>Literal</em>'.
+	 * <!-- begin-user-doc -->
+	 * This implementation returns null;
+	 * returning a non-null result will terminate the switch.
+	 * <!-- end-user-doc -->
+	 * @param object the target of the switch.
+	 * @return the result of interpreting the object as an instance of '<em>Literal</em>'.
+	 * @see #doSwitch(org.eclipse.emf.ecore.EObject) doSwitch(EObject)
+	 * @generated
+	 */
+	public T caseLiteral(Literal object) {
+		return null;
+	}
+
+	/**
+	 * Returns the result of interpreting the object as an instance of '<em>Bool Literal</em>'.
+	 * <!-- begin-user-doc -->
+	 * This implementation returns null;
+	 * returning a non-null result will terminate the switch.
+	 * <!-- end-user-doc -->
+	 * @param object the target of the switch.
+	 * @return the result of interpreting the object as an instance of '<em>Bool Literal</em>'.
+	 * @see #doSwitch(org.eclipse.emf.ecore.EObject) doSwitch(EObject)
+	 * @generated
+	 */
+	public T caseBoolLiteral(BoolLiteral object) {
+		return null;
+	}
+
+	/**
+	 * Returns the result of interpreting the object as an instance of '<em>Int Literal</em>'.
+	 * <!-- begin-user-doc -->
+	 * This implementation returns null;
+	 * returning a non-null result will terminate the switch.
+	 * <!-- end-user-doc -->
+	 * @param object the target of the switch.
+	 * @return the result of interpreting the object as an instance of '<em>Int Literal</em>'.
+	 * @see #doSwitch(org.eclipse.emf.ecore.EObject) doSwitch(EObject)
+	 * @generated
+	 */
+	public T caseIntLiteral(IntLiteral object) {
+		return null;
+	}
+
+	/**
+	 * Returns the result of interpreting the object as an instance of '<em>Real Literal</em>'.
+	 * <!-- begin-user-doc -->
+	 * This implementation returns null;
+	 * returning a non-null result will terminate the switch.
+	 * <!-- end-user-doc -->
+	 * @param object the target of the switch.
+	 * @return the result of interpreting the object as an instance of '<em>Real Literal</em>'.
+	 * @see #doSwitch(org.eclipse.emf.ecore.EObject) doSwitch(EObject)
+	 * @generated
+	 */
+	public T caseRealLiteral(RealLiteral object) {
+		return null;
+	}
+
+	/**
+	 * Returns the result of interpreting the object as an instance of '<em>String Literal</em>'.
+	 * <!-- begin-user-doc -->
+	 * This implementation returns null;
+	 * returning a non-null result will terminate the switch.
+	 * <!-- end-user-doc -->
+	 * @param object the target of the switch.
+	 * @return the result of interpreting the object as an instance of '<em>String Literal</em>'.
+	 * @see #doSwitch(org.eclipse.emf.ecore.EObject) doSwitch(EObject)
+	 * @generated
+	 */
+	public T caseStringLiteral(StringLiteral object) {
+		return null;
+	}
+
 	/**
 	 * Returns the result of interpreting the object as an instance of '<em>Named Element</em>'.
 	 * <!-- begin-user-doc -->