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 * https://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 */
28 private static final long serialVersionUID = 1L;
29
30 private String name;
31 private Integer identifier;
32
33 ASTIdentifierAccess(final int id) {
34 super(id);
35 }
36
37 public Object getIdentifier() {
38 return identifier != null ? identifier : name;
39 }
40
41 public String getName() {
42 return name;
43 }
44
45 /**
46 * Tests whether this is a Jxlt based identifier.
47 *
48 * @return true if `..${...}...`, false otherwise
49 */
50 public boolean isExpression() {
51 return false;
52 }
53
54 @Override
55 public boolean isGlobalVar() {
56 return !isSafe() && !isExpression();
57 }
58
59 /**
60 * Tests whether this is a dot or a question-mark-dot aka safe-navigation access.
61 *
62 * @return true is ?., false if.
63 */
64 public boolean isSafe() {
65 return false;
66 }
67
68 @Override
69 public Object jjtAccept(final ParserVisitor visitor, final Object data) {
70 return visitor.visit(this, data);
71 }
72
73 void setIdentifier(final String id) {
74 name = id;
75 identifier = JexlArithmetic.parseIdentifier(id);
76 }
77
78 @Override
79 public String toString() {
80 return name;
81 }
82 }