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Java > Open Source Codes > net > innig > macker > rule > filter > InterfaceFilter


1 /*______________________________________________________________________________
2  *
3  * Macker http://innig.net/macker/
4  *
5  * Copyright 2002-2003 Paul Cantrell
6  *
7  * This program is free software; you can redistribute it and/or modify it under
8  * the terms of the GNU General Public License version 2, as published by the
9  * Free Software Foundation. See the file LICENSE.html for more information.
10  *
11  * This program is distributed in the hope that it will be useful, but WITHOUT
12  * ANY WARRANTY, including the implied warranty of MERCHANTABILITY or FITNESS
13  * FOR A PARTICULAR PURPOSE. See the license for more details.
14  *
15  * You should have received a copy of the GNU General Public License along with
16  * this program; if not, write to the Free Software Foundation, Inc. / 59 Temple
17  * Place, Suite 330 / Boston, MA 02111-1307 / USA.
18  *______________________________________________________________________________
19  */
20  
21 package net.innig.macker.rule.filter;
22
23 import net.innig.macker.rule.*;
24 import net.innig.macker.structure.ClassInfo;
25 import java.util.Map JavaDoc;
26 import java.util.List JavaDoc;
27
28 public class InterfaceFilter
29     implements Filter
30     {
31     public Pattern createPattern(
32             RuleSet ruleSet,
33             List JavaDoc/*<Pattern>*/ params,
34             Map JavaDoc/*<String,String>*/ options)
35         throws RulesException
36         {
37         if(params.size() != 0)
38             throw new FilterSyntaxException(
39                 this,
40                 "Filter \"" + options.get("filter") + "\" expects no parameters, but has " + params.size());
41         return INTERFACE_PATTERN;
42         }
43
44     private final Pattern INTERFACE_PATTERN =
45         new Pattern()
46             {
47             public boolean matches(EvaluationContext context, ClassInfo classInfo)
48                 throws RulesException
49                 { return classInfo.isInterface(); }
50             };
51     }
52
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