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