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.exception.MethodInvocationException;
24 import org.apache.velocity.runtime.parser.Parser;
25 import org.apache.velocity.runtime.parser.ParserVisitor;
26
27 /**
28 *
29 */
30 public class ASTNotNode extends SimpleNode
31 {
32 /**
33 * @param id
34 */
35 public ASTNotNode(int id)
36 {
37 super(id);
38 }
39
40 /**
41 * @param p
42 * @param id
43 */
44 public ASTNotNode(Parser p, int id)
45 {
46 super(p, id);
47 }
48
49
50 /**
51 * @see org.apache.velocity.runtime.parser.node.SimpleNode#jjtAccept(org.apache.velocity.runtime.parser.ParserVisitor, java.lang.Object)
52 */
53 public Object jjtAccept(ParserVisitor visitor, Object data)
54 {
55 return visitor.visit(this, data);
56 }
57
58 /**
59 * @see org.apache.velocity.runtime.parser.node.SimpleNode#evaluate(org.apache.velocity.context.InternalContextAdapter)
60 */
61 public boolean evaluate( InternalContextAdapter context)
62 throws MethodInvocationException
63 {
64 if (jjtGetChild(0).evaluate(context))
65 return false;
66 else
67 return true;
68 }
69
70 /**
71 * @see org.apache.velocity.runtime.parser.node.SimpleNode#value(org.apache.velocity.context.InternalContextAdapter)
72 */
73 public Object value( InternalContextAdapter context)
74 throws MethodInvocationException
75 {
76 return (jjtGetChild(0).evaluate( context ) ? Boolean.FALSE : Boolean.TRUE) ;
77 }
78 }