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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 | 36 | super(p, id); |
37 | 36 | } |
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 | 36 | Object val = ((SimpleNode) jjtGetChild(0)).value(jc); |
49 | ||
50 | 36 | if (val instanceof Integer) |
51 | { |
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52 | 36 | 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. |