KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > ch > ethz > prose > filter > FieldsWithModifierFilter


1 //
2 // This file is part of the prose package.
3 //
4 // The contents of this file are subject to the Mozilla Public License
5 // Version 1.1 (the "License"); you may not use this file except in
6 // compliance with the License. You may obtain a copy of the License at
7 // http://www.mozilla.org/MPL/
8 //
9 // Software distributed under the License is distributed on an "AS IS" basis,
10 // WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
11 // for the specific language governing rights and limitations under the
12 // License.
13 //
14 // The Original Code is prose.
15 //
16 // The Initial Developer of the Original Code is Andrei Popovici. Portions
17 // created by Andrei Popovici are Copyright (C) 2002 Andrei Popovici.
18 // All Rights Reserved.
19 //
20 // Contributor(s):
21 // $Id: FieldsWithModifierFilter.java,v 1.1.1.1 2003/07/02 15:30:52 apopovic Exp $
22 // =====================================================================
23 //
24 // (history at end)
25 //
26
27 package ch.ethz.prose.filter;
28
29 // used packages
30 import java.util.*;
31 import java.io.*;
32 import java.lang.reflect.Modifier JavaDoc;
33 import ch.ethz.jvmai.JoinPointKinds;
34 import ch.ethz.jvmai.JoinPoint;
35 import ch.ethz.jvmai.CodeJoinPoint;
36 import ch.ethz.prose.engine.JoinPointRequest;
37 import ch.ethz.prose.engine.FieldAccessRequest;
38 import ch.ethz.prose.engine.FieldModificationRequest;
39
40
41 /**
42  * Class FieldsWithModifierFilter XXX
43  *
44  * @version $Revision: 1.1.1.1 $
45  * @author Andrei Popovici
46  */
47 public
48 class FieldsWithModifierFilter extends PointCutter implements JoinPointKinds {
49
50   int theModifier;
51   public FieldsWithModifierFilter(int modifier)
52   {
53     acceptMask = MASK_FIELD_ACCESS_JP | MASK_FIELD_MODIFICATION_JP | MASK_FIELD_JP;
54     mayFilterStaticallyMask = MASK_FIELD_ACCESS_JP | MASK_FIELD_MODIFICATION_JP | MASK_FIELD_JP;
55     canFilterStaticallyMask = MASK_FIELD_ACCESS_JP | MASK_FIELD_MODIFICATION_JP | MASK_FIELD_JP;
56     theModifier = modifier;
57   }
58
59
60   protected boolean doIsSpecialRequest(JoinPointRequest jpr)
61     {
62       // only for field accesses and field modifications
63 int jprType = jpr.getMask() & ( MASK_FIELD_ACCESS_JP | MASK_FIELD_MODIFICATION_JP);
64       int crtModifier;
65       switch (jprType)
66     {
67       case MASK_FIELD_ACCESS_JP:
68         crtModifier = ((FieldAccessRequest)jpr).getField().getModifiers();
69         break;
70       case MASK_FIELD_MODIFICATION_JP:
71         crtModifier = ((FieldModificationRequest)jpr).getField().getModifiers();
72         break;
73       default: throw new Error JavaDoc("cannot get unrequested request");
74     }
75
76
77       return (crtModifier & theModifier) == theModifier;
78     }
79
80   protected boolean doIsSpecialEvent(CodeJoinPoint jp)
81     {
82       throw new Error JavaDoc("The PointCutter contract is not correct");
83     }
84
85 }
86
87
88 //======================================================================
89 //
90 // $Log: FieldsWithModifierFilter.java,v $
91 // Revision 1.1.1.1 2003/07/02 15:30:52 apopovic
92 // Imported from ETH Zurich
93 //
94 // Revision 1.2 2003/05/06 15:51:39 popovici
95 // Mozilla-ification
96 //
97 // Revision 1.1 2003/05/05 13:57:54 popovici
98 // renaming from runes to prose
99 //
100 // Revision 1.3 2003/04/27 13:08:47 popovici
101 // Specializers renamed to PointCutter
102 //
103 // Revision 1.2 2003/04/17 12:49:31 popovici
104 // Refactoring of the crosscut package
105 // ExceptionCut renamed to ThrowCut
106 // McutSignature is now SignaturePattern
107 //
108 // Revision 1.1 2003/04/17 08:47:47 popovici
109 // Important functionality additions
110 // - Cflow specializers
111 // - Restructuring of the MethodCut, SetCut, ThrowCut, and GetCut (they are much smaller)
112 // - Transactional capabilities
113 // - Total refactoring of Specializer evaluation, which permits fine-grained distinction
114 // between static and dynamic specializers.
115 // - Functionality pulled up in abstract classes
116 // - Uniformization of advice methods patterns and names
117 //
118
Popular Tags