Coverage report

  %line %branch
org.apache.commons.jexl.parser.ASTAddNode
72% 
100% 

 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.JexlContext;
 20  
 import org.apache.commons.jexl.util.Coercion;
 21  
 
 22  
 /**
 23  
  *  Addition : either integer addition or string concatenation.
 24  
  *
 25  
  *  @author <a href="mailto:geirm@apache.org">Geir Magnusson Jr.</a>
 26  
  *  @version $Id: ASTAddNode.java 398180 2006-04-29 15:40:35Z dion $
 27  
  */
 28  
 public class ASTAddNode extends SimpleNode {
 29  
     /**
 30  
      * Create the node given an id.
 31  
      * 
 32  
      * @param id node id.
 33  
      */
 34  
     public ASTAddNode(int id) {
 35  0
         super(id);
 36  0
     }
 37  
 
 38  
     /**
 39  
      * Create a node with the given parser and id.
 40  
      * 
 41  
      * @param p a parser.
 42  
      * @param id node id.
 43  
      */
 44  
     public ASTAddNode(Parser p, int id) {
 45  32
         super(p, id);
 46  32
     }
 47  
 
 48  
 
 49  
     /** 
 50  
      * {@inheritDoc}
 51  
      */
 52  
     public Object jjtAccept(ParserVisitor visitor, Object data) {
 53  0
         return visitor.visit(this, data);
 54  
     }
 55  
 
 56  
     /**
 57  
      * {@inheritDoc} 
 58  
      */
 59  
     public Object value(JexlContext context) throws Exception {
 60  51
         Object left = ((SimpleNode) jjtGetChild(0)).value(context);
 61  51
         Object right = ((SimpleNode) jjtGetChild(1)).value(context);
 62  
 
 63  
         /*
 64  
          *  the spec says 'and'
 65  
          */
 66  51
         if (left == null && right == class="keyword">null) {
 67  1
             return new Long(0);
 68  
         }
 69  
 
 70  
         /*
 71  
          *  if anything is float, double or string with ( "." | "E" | "e")
 72  
          *  coerce all to doubles and do it
 73  
          */
 74  50
         if (left instanceof Float || left instanceof Double
 75  
             || right instanceof Float || right instanceof Double
 76  
             || (left instanceof String
 77  
                   && (((String) left).indexOf(".") != -1 
 78  
                           || ((String) left).indexOf("e") != -1
 79  
                           || ((String) left).indexOf("E") != -1)
 80  
                )
 81  
             || (right instanceof String
 82  
                   && (((String) right).indexOf(".") != -1
 83  
                           || ((String) right).indexOf("e") != -1
 84  
                           || ((String) right).indexOf("E") != -1)
 85  
                )
 86  
             ) {
 87  
 
 88  
             /*
 89  
              * in the event that either is null and not both, then just make the
 90  
              * null a 0
 91  
              */
 92  
 
 93  
             try {
 94  5
                 Double l = Coercion.coerceDouble(left);
 95  0
                 Double r = Coercion.coerceDouble(right);
 96  0
                 return new Double(l.doubleValue() + r.doubleValue());
 97  
             } catch (java.lang.NumberFormatException nfe) {
 98  
                 /*
 99  
                  * Well, use strings!
 100  
                  */
 101  5
                 return left.toString().concat(right.toString());
 102  
             }
 103  
         }
 104  
 
 105  
         /*
 106  
          * attempt to use Longs
 107  
          */
 108  
         try {
 109  45
             Long l = Coercion.coerceLong(left);
 110  43
             Long r = Coercion.coerceLong(right);
 111  43
             return new Long(l.longValue() + r.longValue());
 112  
         } catch (java.lang.NumberFormatException nfe) {
 113  
             /*
 114  
              * Well, use strings!
 115  
              */
 116  2
             return left.toString().concat(right.toString());
 117  
         }
 118  
     }
 119  
 }

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