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| org.apache.commons.jexl.parser.ASTUnaryMinusNode |
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| 1 | /* |
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| 2 | * Copyright 2002,2004 The Apache Software Foundation. |
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| 3 | * |
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| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
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| 5 | * you may not use this file except in compliance with the License. |
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| 6 | * You may obtain a copy of the License at |
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| 7 | * |
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| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
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| 9 | * |
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| 10 | * Unless required by applicable law or agreed to in writing, software |
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| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
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| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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| 13 | * See the License for the specific language governing permissions and |
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| 14 | * limitations under the License. |
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| 15 | */ |
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| 16 | package org.apache.commons.jexl.parser; |
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| 17 | ||
| 18 | import org.apache.commons.jexl.JexlContext; |
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| 19 | ||
| 20 | ||
| 21 | /** |
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| 22 | * - |
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| 23 | * |
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| 24 | * @author <a href="mailto:mhw@kremvax.net">Mark H. Wilkinson</a> |
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| 25 | * @version $Id: ASTUnaryMinusNode.java,v 1.3 2004/02/28 13:45:20 yoavs Exp $ |
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| 26 | */ |
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| 27 | public class ASTUnaryMinusNode extends SimpleNode |
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| 28 | { |
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| 29 | public ASTUnaryMinusNode(int id) |
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| 30 | { |
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| 31 | 0 | super(id); |
| 32 | 0 | } |
| 33 | ||
| 34 | public ASTUnaryMinusNode(Parser p, int id) |
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| 35 | { |
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| 36 | 60 | super(p, id); |
| 37 | 60 | } |
| 38 | ||
| 39 | /** Accept the visitor. **/ |
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| 40 | public Object jjtAccept(ParserVisitor visitor, Object data) |
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| 41 | { |
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| 42 | 0 | return visitor.visit(this, data); |
| 43 | } |
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| 44 | ||
| 45 | public Object value(JexlContext jc) |
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| 46 | throws Exception |
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| 47 | { |
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| 48 | 60 | Object val = ((SimpleNode) jjtGetChild(0)).value(jc); |
| 49 | ||
| 50 | 60 | if (val instanceof Integer) |
| 51 | { |
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| 52 | 60 | return new Integer(- ( ((Integer) val).intValue() ) ); |
| 53 | } |
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| 54 | else |
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| 55 | { |
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| 56 | 0 | throw new Exception("expression not integer valued"); |
| 57 | } |
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| 58 | } |
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| 59 | } |
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| 60 |
| This report is generated by jcoverage, Maven and Maven JCoverage Plugin. |