1 package org.apache.velocity.runtime.parser.node;
2
3 /*
4 * Licensed to the Apache Software Foundation (ASF) under one
5 * or more contributor license agreements. See the NOTICE file
6 * distributed with this work for additional information
7 * regarding copyright ownership. The ASF licenses this file
8 * to you under the Apache License, Version 2.0 (the
9 * "License"); you may not use this file except in compliance
10 * with the License. You may obtain a copy of the License at
11 *
12 * http://www.apache.org/licenses/LICENSE-2.0
13 *
14 * Unless required by applicable law or agreed to in writing,
15 * software distributed under the License is distributed on an
16 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17 * KIND, either express or implied. See the License for the
18 * specific language governing permissions and limitations
19 * under the License.
20 */
21
22 import org.apache.velocity.context.InternalContextAdapter;
23 import org.apache.velocity.runtime.parser.Parser;
24 import org.apache.velocity.runtime.parser.ParserVisitor;
25
26 import org.apache.velocity.exception.MethodInvocationException;
27
28 import java.util.HashMap;
29 import java.util.Map;
30
31 /**
32 * AST Node for creating a map / dictionary.
33 *
34 * This class was originally generated from Parset.jjt.
35 *
36 * @version $Id: ASTMap.java 463298 2006-10-12 16:10:32Z henning $
37 */
38 public class ASTMap extends SimpleNode
39 {
40 /**
41 * @param id
42 */
43 public ASTMap(int id)
44 {
45 super(id);
46 }
47
48 /**
49 * @param p
50 * @param id
51 */
52 public ASTMap(Parser p, int id)
53 {
54 super(p, id);
55 }
56
57 /**
58 * @see org.apache.velocity.runtime.parser.node.SimpleNode#jjtAccept(org.apache.velocity.runtime.parser.ParserVisitor, java.lang.Object)
59 */
60 public Object jjtAccept(ParserVisitor visitor, Object data)
61 {
62 return visitor.visit(this, data);
63 }
64
65 /**
66 * @see org.apache.velocity.runtime.parser.node.SimpleNode#value(org.apache.velocity.context.InternalContextAdapter)
67 */
68 public Object value(InternalContextAdapter context)
69 throws MethodInvocationException
70 {
71 int size = jjtGetNumChildren();
72
73 Map objectMap = new HashMap();
74
75 for (int i = 0; i < size; i += 2)
76 {
77 SimpleNode keyNode = (SimpleNode) jjtGetChild(i);
78 SimpleNode valueNode = (SimpleNode) jjtGetChild(i+1);
79
80 Object key = (keyNode == null ? null : keyNode.value(context));
81 Object value = (valueNode == null ? null : valueNode.value(context));
82
83 objectMap.put(key, value);
84 }
85
86 return objectMap;
87 }
88 }