1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17 package org.apache.commons.jexl.parser;
18
19 import org.apache.commons.jexl.JexlContext;
20
21 /**
22 * represents an integer.
23 *
24 * @author <a href="mailto:geirm@apache.org">Geir Magnusson Jr.</a>
25 * @version $Id: ASTIntegerLiteral.java 548229 2007-06-18 06:11:32Z dion $
26 */
27 public class ASTIntegerLiteral extends SimpleNode {
28 /** literal value. */
29 protected Integer val;
30
31 /**
32 * Create the node given an id.
33 *
34 * @param id node id.
35 */
36 public ASTIntegerLiteral(int id) {
37 super(id);
38 }
39
40 /**
41 * Create a node with the given parser and id.
42 *
43 * @param p a parser.
44 * @param id node id.
45 */
46 public ASTIntegerLiteral(Parser p, int id) {
47 super(p, id);
48 }
49
50 /** {@inheritDoc} */
51 public Object jjtAccept(ParserVisitor visitor, Object data) {
52 return visitor.visit(this, data);
53 }
54
55 /**
56 * Part of reference resolution - wierd... in JSTL EL you can have foo.2
57 * which is equiv to foo[2] it appears...
58 *
59 * @param obj the object to evaluate against.
60 * @param ctx the {@link JexlContext}.
61 * @throws Exception on any error.
62 * @return the resulting value.
63 * @see ASTArrayAccess#evaluateExpr(Object, Object, Uberspect)
64 */
65 public Object execute(Object obj, JexlContext ctx) throws Exception {
66 return ASTArrayAccess.evaluateExpr(obj, val, getUberspect());
67 }
68
69 /** {@inheritDoc} */
70 public Object value(JexlContext jc) throws Exception {
71 return val;
72 }
73 }