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Java > Open Source Codes > com > jeantessier > diff > VisitorBase


1 /*
2  * Copyright (c) 2001-2005, Jean Tessier
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  *
9  * * Redistributions of source code must retain the above copyright
10  * notice, this list of conditions and the following disclaimer.
11  *
12  * * Redistributions in binary form must reproduce the above copyright
13  * notice, this list of conditions and the following disclaimer in the
14  * documentation and/or other materials provided with the distribution.
15  *
16  * * Neither the name of Jean Tessier nor the names of his contributors
17  * may be used to endorse or promote products derived from this software
18  * without specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
23  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR
24  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
25  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
26  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
27  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
28  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
29  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
30  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31  */
32
33 package com.jeantessier.diff;
34
35 public abstract class VisitorBase implements Visitor {
36     private int deprecatableLevel = 0;
37     private int documentableLevel = 0;
38     
39     private boolean deprecated[] = new boolean[4];
40     private boolean undeprecated[] = new boolean[4];
41     private boolean documented[] = new boolean[4];
42     private boolean undocumented[] = new boolean[4];
43
44     private void raiseDeprecatableLevel() {
45         deprecatableLevel++;
46     }
47
48     private void lowerDeprecatableLevel() {
49         deprecatableLevel--;
50     }
51
52     private void raiseDocumentableLevel() {
53         documentableLevel++;
54     }
55
56     private void lowerDocumentableLevel() {
57         documentableLevel--;
58     }
59     
60     public boolean isDeprecated() {
61         return deprecated[deprecatableLevel];
62     }
63
64     public void setDeprecated(boolean deprecated) {
65         this.deprecated[deprecatableLevel] = deprecated;
66     }
67     
68     public boolean isUndeprecated() {
69         return undeprecated[deprecatableLevel];
70     }
71
72     public void setUndeprecated(boolean undeprecated) {
73         this.undeprecated[deprecatableLevel] = undeprecated;
74     }
75
76     public boolean isDocumented() {
77         return documented[documentableLevel];
78     }
79
80     public void setDocumented(boolean documented) {
81         this.documented[documentableLevel] = documented;
82     }
83     
84     public boolean isUndocumented() {
85         return undocumented[documentableLevel];
86     }
87
88     public void setUndocumented(boolean undocumented) {
89         this.undocumented[documentableLevel] = undocumented;
90     }
91     
92     public void visitJarDifferences(JarDifferences differences) {
93         // Do nothing
94 }
95         
96     public void visitPackageDifferences(PackageDifferences differences) {
97         // Do nothing
98 }
99
100     public void visitFieldDifferences(FieldDifferences differences) {
101         // Do nothing
102 }
103     
104     public void visitConstructorDifferences(ConstructorDifferences differences) {
105         // Do nothing
106 }
107
108     public void visitMethodDifferences(MethodDifferences differences) {
109         // Do nothing
110 }
111
112     public void visitDeprecatableDifferences(DeprecatableDifferences differences) {
113         raiseDeprecatableLevel();
114         
115         setDeprecated(differences.isNewDeprecation());
116         setUndeprecated(differences.isRemovedDeprecation());
117
118         differences.getComponent().accept(this);
119         
120         lowerDeprecatableLevel();
121     }
122     
123     public void visitDocumentableDifferences(DocumentableDifferences differences) {
124         raiseDocumentableLevel();
125         
126         setDocumented(differences.isNewDocumentation());
127         setUndocumented(differences.isRemovedDocumentation());
128
129         differences.getComponent().accept(this);
130         
131         lowerDocumentableLevel();
132     }
133 }
134
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