Coverage report

  %line %branch
org.apache.commons.jexl.parser.ASTSubtractNode
56% 
92% 

 1  
 /*
 2  
  * Copyright 2002-2006 The Apache Software Foundation.
 3  
  *
 4  
  * Licensed under the Apache License, Version 2.0 (the "License");
 5  
  * you may not use this file except in compliance with the License.
 6  
  * You may obtain a copy of the License at
 7  
  *
 8  
  *      http://www.apache.org/licenses/LICENSE-2.0
 9  
  *
 10  
  * Unless required by applicable law or agreed to in writing, software
 11  
  * distributed under the License is distributed on an "AS IS" BASIS,
 12  
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 13  
  * See the License for the specific language governing permissions and
 14  
  * limitations under the License.
 15  
  */
 16  
 
 17  
 package org.apache.commons.jexl.parser;
 18  
 
 19  
 import org.apache.commons.jexl.util.Coercion;
 20  
 import org.apache.commons.jexl.JexlContext;
 21  
 
 22  
 /**
 23  
  * Subtraction.
 24  
  * 
 25  
  * @author <a href="mailto:geirm@apache.org">Geir Magnusson Jr.</a>
 26  
  * @author <a href="mailto:mhw@kremvax.net">Mark H. Wilkinson</a>
 27  
  * @version $Id: ASTSubtractNode.java 398325 2006-04-30 12:34:29Z dion $
 28  
  */
 29  
 public class ASTSubtractNode extends SimpleNode {
 30  
     /**
 31  
      * Create the node given an id.
 32  
      * 
 33  
      * @param id node id.
 34  
      */
 35  
     public ASTSubtractNode(int id) {
 36  0
         super(id);
 37  0
     }
 38  
 
 39  
     /**
 40  
      * Create a node with the given parser and id.
 41  
      * 
 42  
      * @param p a parser.
 43  
      * @param id node id.
 44  
      */
 45  
     public ASTSubtractNode(Parser p, int id) {
 46  7
         super(p, id);
 47  7
     }
 48  
 
 49  
     /** {@inheritDoc} */
 50  
     public Object value(JexlContext context) throws Exception {
 51  7
         Object left = ((SimpleNode) jjtGetChild(0)).value(context);
 52  7
         Object right = ((SimpleNode) jjtGetChild(1)).value(context);
 53  
 
 54  
         /*
 55  
          * the spec says 'and', I think 'or'
 56  
          */
 57  7
         if (left == null && right == class="keyword">null) {
 58  0
             return new Byte((byte) 0);
 59  
         }
 60  
 
 61  
         /*
 62  
          * if anything is float, double or string with ( "." | "E" | "e") coerce
 63  
          * all to doubles and do it
 64  
          */
 65  7
         if (left instanceof Float
 66  
             || left instanceof Double
 67  
             || right instanceof Float
 68  
             || right instanceof Double
 69  
             || (left instanceof String 
 70  
                 && (((String) left).indexOf(".") != -1 
 71  
                     || ((String) left).indexOf("e") != -1 
 72  
                     || ((String) left).indexOf("E") != -1))
 73  
             || (right instanceof String 
 74  
                 && (((String) right).indexOf(".") != -1 
 75  
                     || ((String) right).indexOf("e") != -1 
 76  
                     || ((String) right).indexOf("E") != -1))) {
 77  0
             Double l = Coercion.coerceDouble(left);
 78  0
             Double r = Coercion.coerceDouble(right);
 79  
 
 80  0
             return new Double(l.doubleValue() - r.doubleValue());
 81  
         }
 82  
 
 83  
         /*
 84  
          * otherwise to longs with thee!
 85  
          */
 86  
 
 87  7
         Long l = Coercion.coerceLong(left);
 88  7
         Long r = Coercion.coerceLong(right);
 89  
 
 90  7
         return new Long(l.longValue() - r.longValue());
 91  
 
 92  
     }
 93  
 
 94  
     /** {@inheritDoc} */
 95  
     public Object jjtAccept(ParserVisitor visitor, Object data) {
 96  0
         return visitor.visit(this, data);
 97  
     }
 98  
 }

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