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org.apache.commons.jexl.parser.ASTAddNode |
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1 | /* |
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2 | * Copyright 2002-2006 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 | ||
17 | package org.apache.commons.jexl.parser; |
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18 | ||
19 | import org.apache.commons.jexl.JexlContext; |
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20 | import org.apache.commons.jexl.util.Coercion; |
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21 | ||
22 | /** |
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23 | * Addition : either integer addition or string concatenation. |
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24 | * |
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25 | * @author <a href="mailto:geirm@apache.org">Geir Magnusson Jr.</a> |
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26 | * @version $Id: ASTAddNode.java 398180 2006-04-29 15:40:35Z dion $ |
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27 | */ |
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28 | public class ASTAddNode extends SimpleNode { |
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29 | /** |
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30 | * Create the node given an id. |
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31 | * |
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32 | * @param id node id. |
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33 | */ |
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34 | public ASTAddNode(int id) { |
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35 | 0 | super(id); |
36 | 0 | } |
37 | ||
38 | /** |
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39 | * Create a node with the given parser and id. |
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40 | * |
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41 | * @param p a parser. |
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42 | * @param id node id. |
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43 | */ |
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44 | public ASTAddNode(Parser p, int id) { |
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45 | 32 | super(p, id); |
46 | 32 | } |
47 | ||
48 | ||
49 | /** |
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50 | * {@inheritDoc} |
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51 | */ |
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52 | public Object jjtAccept(ParserVisitor visitor, Object data) { |
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53 | 0 | return visitor.visit(this, data); |
54 | } |
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55 | ||
56 | /** |
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57 | * {@inheritDoc} |
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58 | */ |
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59 | public Object value(JexlContext context) throws Exception { |
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60 | 51 | Object left = ((SimpleNode) jjtGetChild(0)).value(context); |
61 | 51 | Object right = ((SimpleNode) jjtGetChild(1)).value(context); |
62 | ||
63 | /* |
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64 | * the spec says 'and' |
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65 | */ |
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66 | 51 | if (left == null && right == class="keyword">null) { |
67 | 1 | return new Long(0); |
68 | } |
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69 | ||
70 | /* |
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71 | * if anything is float, double or string with ( "." | "E" | "e") |
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72 | * coerce all to doubles and do it |
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73 | */ |
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74 | 50 | if (left instanceof Float || left instanceof Double |
75 | || right instanceof Float || right instanceof Double |
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76 | || (left instanceof String |
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77 | && (((String) left).indexOf(".") != -1 |
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78 | || ((String) left).indexOf("e") != -1 |
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79 | || ((String) left).indexOf("E") != -1) |
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80 | ) |
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81 | || (right instanceof String |
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82 | && (((String) right).indexOf(".") != -1 |
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83 | || ((String) right).indexOf("e") != -1 |
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84 | || ((String) right).indexOf("E") != -1) |
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85 | ) |
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86 | ) { |
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87 | ||
88 | /* |
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89 | * in the event that either is null and not both, then just make the |
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90 | * null a 0 |
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91 | */ |
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92 | ||
93 | try { |
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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) { |
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98 | /* |
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99 | * Well, use strings! |
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100 | */ |
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101 | 5 | return left.toString().concat(right.toString()); |
102 | } |
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103 | } |
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104 | ||
105 | /* |
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106 | * attempt to use Longs |
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107 | */ |
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108 | try { |
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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) { |
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113 | /* |
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114 | * Well, use strings! |
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115 | */ |
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116 | 2 | return left.toString().concat(right.toString()); |
117 | } |
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118 | } |
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119 | } |
This report is generated by jcoverage, Maven and Maven JCoverage Plugin. |