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.jexl3.parser;
18
19 /**
20 * Array access supporting (optional) safe notation.
21 */
22 public class ASTArrayAccess extends JexlLexicalNode {
23 private static final long serialVersionUID = 1L;
24 /** Which children are accessed using a safe notation.
25 * Note that this does not really work after the 64th child.
26 * However, an expression like 'a?[b]?[c]?...?[b0]' with 64 terms is very unlikely
27 * to occur in real life and a bad idea anyhow.
28 */
29 private long safe;
30
31 public ASTArrayAccess(final int id) {
32 super(id);
33 }
34
35 public ASTArrayAccess(final Parser p, final int id) {
36 super(id);
37 }
38
39 public boolean isSafeChild(final int c) {
40 return (safe & 1L << c) != 0;
41 }
42
43 @Override
44 public Object jjtAccept(final ParserVisitor visitor, final Object data) {
45 return visitor.visit(this, data);
46 }
47
48 void setSafe(final long s) {
49 this.safe = s;
50 }
51 }