| /*=============================================================================# |
| # Copyright (c) 2009, 2020 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.internal.r.rdata; |
| |
| import java.util.Collections; |
| import java.util.List; |
| |
| import org.eclipse.statet.jcommons.lang.Nullable; |
| |
| import org.eclipse.statet.r.core.data.CombinedRElement; |
| import org.eclipse.statet.r.core.model.RElementName; |
| import org.eclipse.statet.rj.data.RStore; |
| |
| |
| public final class RNullVar extends BasicCombinedRElement { |
| |
| |
| public RNullVar(final @Nullable BasicCombinedRElement parent, final @Nullable RElementName name) { |
| super(parent, name); |
| } |
| |
| |
| @Override |
| public byte getRObjectType() { |
| return TYPE_NULL; |
| } |
| |
| @Override |
| public String getRClassName() { |
| return CLASSNAME_NULL; |
| } |
| |
| @Override |
| public long getLength() { |
| return 0; |
| } |
| |
| @Override |
| public @Nullable RStore<?> getData() { |
| return null; |
| } |
| |
| |
| @Override |
| public int getElementType() { |
| return R_GENERAL_VARIABLE; |
| } |
| |
| @Override |
| public boolean hasModelChildren(final @Nullable Filter filter) { |
| return false; |
| } |
| |
| @Override |
| public List<? extends CombinedRElement> getModelChildren(final @Nullable Filter filter) { |
| return Collections.emptyList(); |
| } |
| |
| |
| @Override |
| public String toString() { |
| return "RObject type=NULL"; |
| } |
| |
| } |