| 1 | package org.apache.velocity.runtime.parser.node; |
| 2 | |
| 3 | /* |
| 4 | * Copyright 2000-2001,2004 The Apache Software Foundation. |
| 5 | * |
| 6 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 7 | * you may not use this file except in compliance with the License. |
| 8 | * You may obtain a copy of the License at |
| 9 | * |
| 10 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 11 | * |
| 12 | * Unless required by applicable law or agreed to in writing, software |
| 13 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 14 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 15 | * See the License for the specific language governing permissions and |
| 16 | * limitations under the License. |
| 17 | */ |
| 18 | |
| 19 | import org.apache.velocity.context.InternalContextAdapter; |
| 20 | import org.apache.velocity.runtime.parser.*; |
| 21 | |
| 22 | import org.apache.velocity.exception.MethodInvocationException; |
| 23 | |
| 24 | public class ASTNotNode extends SimpleNode |
| 25 | { |
| 26 | public ASTNotNode(int id) |
| 27 | { |
| 28 | super(id); |
| 29 | } |
| 30 | |
| 31 | public ASTNotNode(Parser p, int id) |
| 32 | { |
| 33 | super(p, id); |
| 34 | } |
| 35 | |
| 36 | /** Accept the visitor. **/ |
| 37 | public Object jjtAccept(ParserVisitor visitor, Object data) |
| 38 | { |
| 39 | return visitor.visit(this, data); |
| 40 | } |
| 41 | |
| 42 | public boolean evaluate( InternalContextAdapter context) |
| 43 | throws MethodInvocationException |
| 44 | { |
| 45 | if (jjtGetChild(0).evaluate(context)) |
| 46 | return false; |
| 47 | else |
| 48 | return true; |
| 49 | } |
| 50 | |
| 51 | public Object value( InternalContextAdapter context) |
| 52 | throws MethodInvocationException |
| 53 | { |
| 54 | return (jjtGetChild(0).evaluate( context ) ? Boolean.FALSE : Boolean.TRUE) ; |
| 55 | } |
| 56 | } |