Coverage report

| %line | %branch
--- | --- | ---
org.apache.commons.jexl.parser.ASTSizeFunction |
80% |
97% |

1 |  |
     /*
2 |  |
      * Copyright 2002-2006 The Apache Software Foundation.
3 |  |
      *
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      * Licensed under the Apache License, Version 2.0 (the "License");
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      * you may not use this file except in compliance with the License.
6 |  |
      * You may obtain a copy of the License at
7 |  |
      *
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      *      http://www.apache.org/licenses/LICENSE-2.0
9 |  |
      *
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      * 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.
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      * See the License for the specific language governing permissions and
14 |  |
      * limitations under the License.
15 |  |
      */
16 |  |
     package org.apache.commons.jexl.parser;
17 |  |
18 |  |
     import java.lang.reflect.Array;
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     import java.util.Collection;
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     import java.util.Map;
21 |  |
22 |  |
     import org.apache.commons.jexl.JexlContext;
23 |  |
     import org.apache.commons.jexl.util.Introspector;
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     import org.apache.commons.jexl.util.introspection.Info;
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     import org.apache.commons.jexl.util.introspection.VelMethod;
26 |  |
27 |  |
     /**
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      * generalized size() function for all classes we can think of.
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      *
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      * @author <a href="mailto:geirm@apache.org">Geir Magnusson Jr.</a>
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      * @author <a href="hw@kremvax.net">Mark H. Wilkinson</a>
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      * @version $Id: ASTSizeFunction.java 398324 2006-04-30 12:20:24Z dion $
33 |  |
      */
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     public class ASTSizeFunction extends SimpleNode {
35 |  |
         /**
36 |  |
          * Create the node given an id.
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          *
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          * @param id node id.
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          */
40 |  |
         public ASTSizeFunction(int id) {
41 | 0 |
             super(id);
42 | 0 |
         }
43 |  |
44 |  |
         /**
45 |  |
          * Create a node with the given parser and id.
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          *
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          * @param p a parser.
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          * @param id node id.
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          */
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         public ASTSizeFunction(Parser p, int id) {
51 | 13 |
             super(p, id);
52 | 13 |
         }
53 |  |
54 |  |
         /** {@inheritDoc} */
55 |  |
         public Object jjtAccept(ParserVisitor visitor, Object data) {
56 | 0 |
             return visitor.visit(this, data);
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         }
58 |  |
59 |  |
         /** {@inheritDoc} */
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         public Object value(JexlContext jc) throws Exception {
61 | 13 |
             SimpleNode arg = (SimpleNode) jjtGetChild(0);
62 |  |
63 | 13 |
             Object val = arg.value(jc);
64 |  |
65 | 13 |
             if (val == null) {
66 | 0 |
                 throw new Exception("size() : null arg");
67 |  |
             }
68 |  |
69 | 13 |
             return new Integer(ASTSizeFunction.sizeOf(val));
70 |  |
         }
71 |  |
72 |  |
         /**
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          * Calculate the <code>size</code> of various types: Collection, Array, Map, String,
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          * and anything that has a int size() method.
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          *
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          * @param val the object to get the size of.
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          * @return the size of val
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          * @throws Exception if the size cannot be determined.
79 |  |
          */
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         public static int sizeOf(Object val) throws Exception {
81 | 20 |
             if (val instanceof Collection) {
82 | 9 |
                 return ((Collection) val).size();
83 | 11 |
             } else if (val.getClass().isArray()) {
84 | 1 |
                 return Array.getLength(val);
85 | 10 |
             } else if (val instanceof Map) {
86 | 2 |
                 return ((Map) val).size();
87 | 8 |
             } else if (val instanceof String) {
88 | 6 |
                 return ((String) val).length();
89 |  |
             } else {
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                 // check if there is a size method on the object that returns an
91 |  |
                 // integer
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                 // and if so, just use it
93 | 2 |
                 Object[] params = new Object[0];
94 | 2 |
                 Info velInfo = new Info("", 1, 1);
95 | 2 |
                 VelMethod vm = Introspector.getUberspect().getMethod(val, "size", params, velInfo);
96 | 2 |
                 if (vm != null && vm.getReturnType() == Integer.TYPE) {
97 | 2 |
                     Integer result = (Integer) vm.invoke(val, params);
98 | 2 |
                     return result.intValue();
99 |  |
                 }
100 | 0 |
                 throw new Exception("size() : unknown type : " + val.getClass());
101 |  |
             }
102 |  |
         }
103 |  |
104 |  |
     }

This report is generated by jcoverage, Maven and Maven JCoverage Plugin.