| /******************************************************************************* |
| * Copyright (c) 2010 xored software, Inc. |
| * |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Public License v. 2.0 which is available at |
| * http://www.eclipse.org/legal/epl-2.0. |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * xored software, Inc. - initial API and Implementation (Alex Panchenko) |
| *******************************************************************************/ |
| package org.eclipse.dltk.javascript.typeinfo; |
| |
| import org.eclipse.core.runtime.IAdaptable; |
| import org.eclipse.dltk.annotations.Internal; |
| import org.eclipse.dltk.annotations.NonNull; |
| import org.eclipse.dltk.core.IModelElement; |
| import org.eclipse.dltk.core.ISourceModule; |
| |
| public abstract class ReferenceSource implements IAdaptable { |
| |
| @Internal |
| static class Unknown extends ReferenceSource { |
| @Override |
| public IModelElement getModelElement() { |
| return null; |
| } |
| |
| @Override |
| public ISourceModule getSourceModule() { |
| return null; |
| } |
| |
| @Override |
| public String toString() { |
| return "UNKNOWN"; |
| } |
| } |
| |
| public static final ReferenceSource UNKNOWN = new Unknown(); |
| |
| private static class ModelElementSource extends ReferenceSource { |
| @NonNull |
| private final IModelElement modelElement; |
| |
| public ModelElementSource(IModelElement modelElement) { |
| this.modelElement = modelElement; |
| } |
| |
| @Override |
| public IModelElement getModelElement() { |
| return modelElement; |
| } |
| |
| @Override |
| public ISourceModule getSourceModule() { |
| return modelElement instanceof ISourceModule ? (ISourceModule) modelElement |
| : null; |
| } |
| |
| @Override |
| public String toString() { |
| return modelElement.getElementName(); |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (this == obj) { |
| return true; |
| } else if (obj instanceof ModelElementSource) { |
| return modelElement |
| .equals(((ModelElementSource) obj).modelElement); |
| } else { |
| return false; |
| } |
| } |
| } |
| |
| @Internal |
| static class Dummy extends Unknown { |
| @Override |
| public String toString() { |
| return "Dummy"; |
| } |
| } |
| |
| /** |
| * Creates {@link ReferenceSource} for the specified {@link IModelElement} |
| * if not null or creates new dummy result. |
| */ |
| public static ReferenceSource create(IModelElement modelElement) { |
| return modelElement != null ? new ModelElementSource(modelElement) |
| : new Dummy(); |
| } |
| |
| public abstract IModelElement getModelElement(); |
| |
| public abstract ISourceModule getSourceModule(); |
| |
| public Object getAdapter(@SuppressWarnings("rawtypes") Class adapter) { |
| if (adapter == ReferenceSource.class) { |
| return this; |
| } else { |
| return null; |
| } |
| } |
| |
| } |