| /** |
| * <copyright> |
| * |
| * Copyright (c) 2012 E.D.Willink and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * E.D.Willink - initial API and implementation |
| * |
| * </copyright> |
| */ |
| package org.eclipse.ocl.examples.xtext.essentialocl.attributes; |
| |
| import org.eclipse.emf.ecore.EObject; |
| import org.eclipse.jdt.annotation.NonNull; |
| import org.eclipse.ocl.examples.pivot.PivotPackage; |
| import org.eclipse.ocl.examples.pivot.Variable; |
| import org.eclipse.ocl.examples.pivot.scoping.AbstractAttribution; |
| import org.eclipse.ocl.examples.pivot.scoping.EnvironmentView; |
| import org.eclipse.ocl.examples.pivot.scoping.ScopeView; |
| import org.eclipse.ocl.examples.pivot.utilities.PivotUtil; |
| import org.eclipse.ocl.examples.xtext.essentialocl.essentialoclcs.LetExpCS; |
| import org.eclipse.ocl.examples.xtext.essentialocl.essentialoclcs.LetVariableCS; |
| |
| public class LetVariableCSAttribution extends AbstractAttribution |
| { |
| public static final LetVariableCSAttribution INSTANCE = new LetVariableCSAttribution(); |
| |
| @Override |
| public ScopeView computeLookup(@NonNull EObject target, @NonNull EnvironmentView environmentView, @NonNull ScopeView scopeView) { |
| if (environmentView.accepts(PivotPackage.Literals.VARIABLE)) { |
| LetVariableCS targetElement = (LetVariableCS)target; |
| LetExpCS letExpression = targetElement.getLetExpression(); |
| for (LetVariableCS csVariable : letExpression.getVariable()) { |
| if (csVariable == targetElement) { |
| break; |
| } |
| Variable variable = PivotUtil.getPivot(Variable.class, csVariable); |
| if (variable != null) { // Maybe null while resolving namespaces |
| environmentView.addNamedElement(variable); |
| } |
| } |
| if (environmentView.hasFinalResult()) { |
| return null; // Let variables occlude outer scopes |
| } |
| } |
| return scopeView.getParent().getParent(); // Leapfrog to bypass all Variable contribution of LetExpCSAttribution |
| } |
| } |