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| org.apache.commons.jexl.parser.ASTAddNode | 
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| 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 | } | 
| This report is generated by jcoverage, Maven and Maven JCoverage Plugin. |