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Java > Open Source Codes > org > netbeans > modules > javacore > parser > EnumInfoMeasure


1 /*
2  * The contents of this file are subject to the terms of the Common Development
3  * and Distribution License (the License). You may not use this file except in
4  * compliance with the License.
5  *
6  * You can obtain a copy of the License at http://www.netbeans.org/cddl.html
7  * or http://www.netbeans.org/cddl.txt.
8  *
9  * When distributing Covered Code, include this CDDL Header Notice in each file
10  * and include the License file at http://www.netbeans.org/cddl.txt.
11  * If applicable, add the following below the CDDL Header, with the fields
12  * enclosed by brackets [] replaced by your own identifying information:
13  * "Portions Copyrighted [year] [name of copyright owner]"
14  *
15  * The Original Software is NetBeans. The Initial Developer of the Original
16  * Software is Sun Microsystems, Inc. Portions Copyright 1997-2006 Sun
17  * Microsystems, Inc. All Rights Reserved.
18  */
19 package org.netbeans.modules.javacore.parser;
20
21 import org.netbeans.modules.javacore.jmiimpl.javamodel.JavaEnumImpl;
22
23 /**
24  *
25  * @author Tomas Hurka
26  */
27 class EnumInfoMeasure implements Measure {
28     public static final EnumInfoMeasure INSTANCE = new EnumInfoMeasure();
29
30     private static final int NAME_WEIGHT = 50;
31     private static final int CONSTANTS_WEIGHT = 30;
32     private static final int MEMBERS_WEIGHT = 20;
33
34     /** Creates a new instance of ClassMeasure */
35     private EnumInfoMeasure() {
36     }
37
38     /** Compares JavaClass to ASTree object.
39      * @param refObject Must be JavaClass
40      * @param asTree
41      * @return distance
42      */
43     public int getDistance(Object JavaDoc refObject, Object JavaDoc ast) {
44         JavaEnumImpl refInfo = (JavaEnumImpl) refObject;
45         
46         if (ast instanceof EnumInfo) {
47             EnumInfo astInfo = (EnumInfo) ast;
48             int result = 0;
49
50             result += StringMeasure.INSTANCE.getDistance(refInfo.getName(), astInfo.name) * NAME_WEIGHT;
51             if (refInfo.isPersisted()) {
52                 String JavaDoc[] refConstantNames = InfoUtil.getElementNames(refInfo.getConstants());
53                 String JavaDoc[] astConstantNames = InfoUtil.getElementNames(astInfo.constants);
54                 result += new ArrayMeasure(StringMeasure.INSTANCE).getDistance(refConstantNames, astConstantNames) * CONSTANTS_WEIGHT;
55                 String JavaDoc[] refMemberNames = InfoUtil.getElementNames(refInfo.getFeatures());
56                 String JavaDoc[] astMemberNames = InfoUtil.getElementNames(astInfo.features);
57                 result += new ArrayMeasure(StringMeasure.INSTANCE).getDistance(refMemberNames, astMemberNames) * MEMBERS_WEIGHT;
58             }
59             result = result / 100;
60             return result > INFINITE_DISTANCE ? INFINITE_DISTANCE : result;
61         }
62         return INFINITE_DISTANCE;
63     }
64 }
65
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