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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 * Multiplication
24 *
25 * @author <a href="mailto:geirm@apache.org">Geir Magnusson Jr.</a>
26 * @version $Id: ASTMulNode.java,v 1.4 2004/02/28 13:45:20 yoavs Exp $
27 */
28 public class ASTMulNode extends SimpleNode
29 {
30 public ASTMulNode(int id)
31 {
32 super(id);
33 }
34
35 public ASTMulNode(Parser p, int id)
36 {
37 super(p, id);
38 }
39
40
41 /*** Accept the visitor. **/
42 public Object jjtAccept(ParserVisitor visitor, Object data)
43 {
44 return visitor.visit(this, data);
45 }
46
47 public Object value(JexlContext context)
48 throws Exception
49 {
50 Object left = ((SimpleNode) jjtGetChild(0)).value(context);
51 Object right = ((SimpleNode) jjtGetChild(1)).value(context);
52
53
54
55
56 if (left == null && right == null)
57 return new Integer(0);
58
59
60
61
62
63 if ( left instanceof Float || left instanceof Double
64 || right instanceof Float || right instanceof Double
65 || ( left instanceof String
66 && ( ((String) left).indexOf(".") != -1 ||
67 ((String) left).indexOf("e") != -1 ||
68 ((String) left).indexOf("E") != -1 )
69 )
70 || ( right instanceof String
71 && ( ((String) right).indexOf(".") != -1 ||
72 ((String) right).indexOf("e") != -1 ||
73 ((String) right).indexOf("E") != -1 )
74 )
75 )
76 {
77 Double l = Coercion.coerceDouble(left);
78 Double r = Coercion.coerceDouble(right);
79
80 return new Double( l.doubleValue() * r.doubleValue() );
81 }
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87 Long l = Coercion.coerceLong(left);
88 Long r = Coercion.coerceLong(right);
89
90 return new Long(l.longValue() * r.longValue());
91 }
92
93 }
94