01: package org.apache.velocity.runtime.parser.node;
02:
03: /*
04: * Licensed to the Apache Software Foundation (ASF) under one
05: * or more contributor license agreements. See the NOTICE file
06: * distributed with this work for additional information
07: * regarding copyright ownership. The ASF licenses this file
08: * to you under the Apache License, Version 2.0 (the
09: * "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: * @param id
33: */
34: public ASTNotNode(int id) {
35: super (id);
36: }
37:
38: /**
39: * @param p
40: * @param id
41: */
42: public ASTNotNode(Parser p, int id) {
43: super (p, id);
44: }
45:
46: /**
47: * @see org.apache.velocity.runtime.parser.node.SimpleNode#jjtAccept(org.apache.velocity.runtime.parser.ParserVisitor, java.lang.Object)
48: */
49: public Object jjtAccept(ParserVisitor visitor, Object data) {
50: return visitor.visit(this , data);
51: }
52:
53: /**
54: * @see org.apache.velocity.runtime.parser.node.SimpleNode#evaluate(org.apache.velocity.context.InternalContextAdapter)
55: */
56: public boolean evaluate(InternalContextAdapter context)
57: throws MethodInvocationException {
58: if (jjtGetChild(0).evaluate(context))
59: return false;
60: else
61: return true;
62: }
63:
64: /**
65: * @see org.apache.velocity.runtime.parser.node.SimpleNode#value(org.apache.velocity.context.InternalContextAdapter)
66: */
67: public Object value(InternalContextAdapter context)
68: throws MethodInvocationException {
69: return (jjtGetChild(0).evaluate(context) ? Boolean.FALSE
70: : Boolean.TRUE);
71: }
72: }
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