// Copyright (C) 2008 Google Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package com.google.caja.parser.js;
import com.google.caja.SomethingWidgyHappenedError;
import com.google.caja.reporting.RenderContext;
/**
* A placeholder that can be used in the child type parameter to
* AbstractParseTreeNode to indicate that the node is always a leaf in the parse
* tree.
*
* @author mikesamuel@gmail.com
*/
public final class NoChildren extends AbstractExpression {
private static final long serialVersionUID = -7279409933773260296L;
private NoChildren() { super(null, null); /* Not instantiable. */ }
@Override
public Object getValue() { throw new SomethingWidgyHappenedError(); }
public void render(RenderContext rc) {
throw new SomethingWidgyHappenedError();
}
public String typeOf() { throw new SomethingWidgyHappenedError(); }
}