1 /*
2 * Copyright 2002-2006 The Apache Software Foundation.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 package org.apache.commons.jexl.parser;
18
19 import org.apache.commons.jexl.JexlContext;
20
21 /***
22 * 'null'.
23 *
24 * @author <a href="mailto:geirm@apache.org">Geir Magnusson Jr.</a>
25 */
26 public class ASTNullLiteral extends SimpleNode {
27 /***
28 * Create the node given an id.
29 *
30 * @param id node id.
31 */
32 public ASTNullLiteral(int id) {
33 super(id);
34 }
35
36 /***
37 * Create a node with the given parser and id.
38 *
39 * @param p a parser.
40 * @param id node id.
41 */
42 public ASTNullLiteral(Parser p, int id) {
43 super(p, id);
44 }
45
46 /*** {@inheritDoc} */
47 public Object jjtAccept(ParserVisitor visitor, Object data) {
48 return visitor.visit(this, data);
49 }
50
51 /*** {@inheritDoc} */
52 public Object value(JexlContext context) {
53 return null;
54 }
55 }