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 import org.apache.commons.jexl3.JexlArithmetic;
20
21 /**
22 * Identifiers, variables and registers.
23 */
24 public class ASTIdentifierAccess extends JexlNode {
25 /**
26 */
27 private static final long serialVersionUID = 1L;
28
29 private String name;
30 private Integer identifier;
31
32 ASTIdentifierAccess(final int id) {
33 super(id);
34 }
35
36 public Object getIdentifier() {
37 return identifier != null ? identifier : name;
38 }
39
40 public String getName() {
41 return name;
42 }
43
44 /**
45 * Tests whether this is a Jxlt based identifier.
46 * @return true if `..${...}...`, false otherwise
47 */
48 public boolean isExpression() {
49 return false;
50 }
51
52 @Override
53 public boolean isGlobalVar() {
54 return !isSafe() && !isExpression();
55 }
56
57 /**
58 * Tests whether this is a dot or a question-mark-dot aka safe-navigation access.
59 * @return true is ?., false if.
60 */
61 public boolean isSafe() {
62 return false;
63 }
64
65 @Override
66 public Object jjtAccept(final ParserVisitor visitor, final Object data) {
67 return visitor.visit(this, data);
68 }
69
70 void setIdentifier(final String id) {
71 name = id;
72 identifier = JexlArithmetic.parseIdentifier(id);
73 }
74
75 @Override
76 public String toString() {
77 return name;
78 }
79 }