Java tutorial
/** * Copyright (c) 2011 committers of YAKINDU 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: * committers of YAKINDU - initial API and implementation */ package org.yakindu.sct.model.sgraph.naming; import java.util.ArrayList; import java.util.LinkedList; import java.util.List; import org.eclipse.emf.ecore.EObject; import org.eclipse.xtext.EcoreUtil2; import org.eclipse.xtext.naming.DefaultDeclarativeQualifiedNameProvider; import org.eclipse.xtext.naming.IQualifiedNameConverter; import org.eclipse.xtext.naming.QualifiedName; import org.eclipse.xtext.util.SimpleAttributeResolver; import org.eclipse.xtext.util.Strings; import org.yakindu.base.types.Declaration; import org.yakindu.sct.model.sgraph.Choice; import org.yakindu.sct.model.sgraph.CompositeElement; import org.yakindu.sct.model.sgraph.Entry; import org.yakindu.sct.model.sgraph.Exit; import org.yakindu.sct.model.sgraph.FinalState; import org.yakindu.sct.model.sgraph.Region; import org.yakindu.sct.model.sgraph.Scope; import org.yakindu.sct.model.sgraph.ScopedElement; import org.yakindu.sct.model.sgraph.State; import org.yakindu.sct.model.sgraph.Statechart; import org.yakindu.sct.model.sgraph.Synchronization; import org.yakindu.sct.model.sgraph.Vertex; import com.google.common.base.Function; import com.google.common.base.Predicate; import com.google.common.collect.Collections2; import com.google.common.collect.Iterables; import com.google.inject.Inject; /** * NameProvider for SGraph elements like statecharts, scopes and declarations. * * @author benjamin schwertfeger * @author andreas muelder * */ public class SGraphNameProvider extends DefaultDeclarativeQualifiedNameProvider { /** "Default" */ private static final QualifiedName DEFAULT_ENTRY_NAME = QualifiedName.create("_entry_Default"); private static final QualifiedName DEFAULT_EXIT_NAME = QualifiedName.create("_exit_Default"); private static final String _FINAL_STATE_NAME = "_final_"; private static final String _CHOICE_NAME = "_choice_"; private static final String _SYNC_NAME = "_sync"; @Inject private IQualifiedNameConverter nameConverter; @Inject private IdentifierConverter identifierConverter; @Override protected Function<EObject, String> getResolver() { return SimpleAttributeResolver.NAME_RESOLVER; } public QualifiedName qualifiedName(Statechart ele) { String scName = ele.getName(); if (Strings.isEmpty(scName)) { return null; } QualifiedName name = QualifiedName.create(identifierConverter.toIdentifier(ele.getName())); if (!Strings.isEmpty(ele.getNamespace())) { name = nameConverter.toQualifiedName(ele.getNamespace()).append(name); } return name; } public QualifiedName qualifiedName(Synchronization ele) { QualifiedName qualifiedNameFromConverter = null; if (!Strings.isEmpty(ele.getName())) { qualifiedNameFromConverter = QualifiedName.create(ele.getName()); } else { LinkedList<Synchronization> list = new LinkedList<Synchronization>(); Iterables.addAll(list, Iterables.filter(((Region) ele.eContainer()).getVertices(), Synchronization.class)); qualifiedNameFromConverter = QualifiedName.create(_SYNC_NAME + list.indexOf(ele)); } return getParentQualifiedName(ele, qualifiedNameFromConverter); } public QualifiedName qualifiedName(Choice ele) { // first get order number of choice node List<Vertex> choiceList = new ArrayList<Vertex>(); choiceList.addAll(Collections2.filter(((Region) ele.eContainer()).getVertices(), new Predicate<Vertex>() { public boolean apply(Vertex input) { return input instanceof Choice; } })); int index = choiceList.indexOf(ele); QualifiedName qualifiedNameFromConverter = QualifiedName.create(_CHOICE_NAME + index); return getParentQualifiedName(ele, qualifiedNameFromConverter); } public QualifiedName qualifiedName(Entry ele) { QualifiedName name = DEFAULT_ENTRY_NAME; if (ele.getName() != null && !ele.getName().isEmpty()) { name = QualifiedName.create(ele.getName()); } return getParentQualifiedName(ele, name); } public QualifiedName qualifiedName(Exit ele) { QualifiedName name = DEFAULT_EXIT_NAME; if (ele.getName() != null && !ele.getName().isEmpty()) { name = QualifiedName.create(ele.getName()); } return getParentQualifiedName(ele, name); } protected QualifiedName getParentQualifiedName(final EObject ele, final QualifiedName childName) { EObject temp = ele; while (temp.eContainer() != null) { temp = temp.eContainer(); QualifiedName parentsQualifiedName = getFullyQualifiedName(temp); if (parentsQualifiedName != null) return parentsQualifiedName.append(childName); } return childName; } public QualifiedName qualifiedName(Scope ele) { QualifiedName name = null; String nameString = SimpleAttributeResolver.NAME_RESOLVER.apply(ele); if (!Strings.isEmpty(nameString)) { name = nameConverter.toQualifiedName(nameString); } QualifiedName namespace = getNamespace(ele); if (namespace != null && name != null) { name = namespace.append(name); } return name; } public QualifiedName qualifiedName(FinalState ele) { QualifiedName qfn = null; if (Strings.isEmpty(ele.getName())) { qfn = QualifiedName.create(_FINAL_STATE_NAME); } else { qfn = QualifiedName.create(identifierConverter.toIdentifier(ele.getName())); } return getParentQualifiedName(ele, qfn); } public QualifiedName qualifiedName(State ele) { if (ele.getName() == null) { return null; } QualifiedName qualifiedNameFromConverter = QualifiedName .create(identifierConverter.toIdentifier(ele.getName())); return getParentQualifiedName(ele, qualifiedNameFromConverter); } public QualifiedName qualifiedName(Region ele) { QualifiedName qualifiedNameFromConverter = null; if (ele.getName() == null || ele.getName().isEmpty()) { if (ele.eContainer() instanceof CompositeElement) { CompositeElement parent = (CompositeElement) ele.eContainer(); int index = parent.getRegions().indexOf(ele); if (index != -1) { qualifiedNameFromConverter = QualifiedName.create("_region" + index); } } if (qualifiedNameFromConverter == null) { return null; } } else { qualifiedNameFromConverter = QualifiedName.create(identifierConverter.toIdentifier(ele.getName())); } return getParentQualifiedName(ele, qualifiedNameFromConverter); } public QualifiedName qualifiedName(Declaration ele) { QualifiedName name = null; if (!Strings.isEmpty(ele.getName())) { name = nameConverter.toQualifiedName(ele.getName()); } QualifiedName namespace = getNamespace(ele); if (namespace != null && name != null) { name = namespace.append(name); } return name; } protected QualifiedName getNamespace(EObject child) { QualifiedName name = null; if (!(child instanceof ScopedElement)) { ScopedElement interfaceScope = EcoreUtil2.getContainerOfType(child, ScopedElement.class); if (interfaceScope != null && !Strings.isEmpty(interfaceScope.getNamespace())) { name = nameConverter.toQualifiedName(interfaceScope.getNamespace()); } } return name; } }