| /*=============================================================================# |
| # Copyright (c) 2009, 2018 Stephan Wahlbrink and others. |
| # |
| # This program and the accompanying materials are made available under the |
| # terms of the Eclipse Public License 2.0 which is available at |
| # https://www.eclipse.org/legal/epl-2.0, or the Apache License, Version 2.0 |
| # which is available at https://www.apache.org/licenses/LICENSE-2.0. |
| # |
| # SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 |
| # |
| # Contributors: |
| # Stephan Wahlbrink <sw@wahlbrink.eu> - initial API and implementation |
| #=============================================================================*/ |
| |
| package org.eclipse.statet.rj.data.impl; |
| |
| import org.eclipse.statet.rj.data.RList; |
| import org.eclipse.statet.rj.data.RObject; |
| import org.eclipse.statet.rj.data.RStore; |
| |
| |
| public class RNullImpl implements RObject { |
| |
| |
| public static final RNullImpl INSTANCE= new RNullImpl(); |
| |
| |
| public RNullImpl() { |
| } |
| |
| |
| @Override |
| public byte getRObjectType() { |
| return TYPE_NULL; |
| } |
| |
| @Override |
| public String getRClassName() { |
| return CLASSNAME_NULL; |
| } |
| |
| /** |
| * Returns the length of the object. The length of {@link RObject#TYPE_NULL NULL} |
| * is always zero. |
| * |
| * @return the length |
| */ |
| @Override |
| public long getLength() { |
| return 0; |
| } |
| |
| @Override |
| public RStore<?> getData() { |
| return null; |
| } |
| |
| @Override |
| public RList getAttributes() { |
| return null; |
| } |
| |
| @Override |
| public int hashCode() { |
| return 15677; |
| } |
| |
| @Override |
| public boolean equals(final Object obj) { |
| return (this == obj || ( |
| (obj instanceof RObject) && ((RObject) obj).getRObjectType() == RObject.TYPE_NULL) ); |
| } |
| |
| @Override |
| public String toString() { |
| return "RObject type=RNullImpl"; |
| } |
| |
| } |