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Java > Open Source Codes > com > jeantessier > classreader > SymbolGatherer


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.classreader;
34
35 public class SymbolGatherer extends CollectorBase {
36     private boolean collectingClassNames = true;
37     private boolean collectingFieldNames = true;
38     private boolean collectingMethodNames = true;
39     private boolean collectingLocalNames = true;
40     
41     private Method_info currentMethod = null;
42
43     public boolean isCollectingClassNames() {
44         return collectingClassNames;
45     }
46
47     public void setCollectingClassNames(boolean collectingClassNames) {
48         this.collectingClassNames = collectingClassNames;
49     }
50
51     public boolean isCollectingFieldNames() {
52         return collectingFieldNames;
53     }
54
55     public void setCollectingFieldNames(boolean collectingFieldNames) {
56         this.collectingFieldNames = collectingFieldNames;
57     }
58
59     public boolean isCollectingMethodNames() {
60         return collectingMethodNames;
61     }
62
63     public void setCollectingMethodNames(boolean collectingMethodNames) {
64         this.collectingMethodNames = collectingMethodNames;
65     }
66
67     public boolean isCollectingLocalNames() {
68         return collectingLocalNames;
69     }
70
71     public void setCollectingLocalNames(boolean collectingLocalNames) {
72         this.collectingLocalNames = collectingLocalNames;
73     }
74     
75     // Classfile
76 public void visitClassfile(Classfile classfile) {
77         if (isCollectingClassNames()) {
78             add(classfile.getClassName());
79         }
80
81         super.visitClassfile(classfile);
82     }
83
84     // Features
85 public void visitField_info(Field_info entry) {
86         if (isCollectingFieldNames()) {
87             add(entry.getFullSignature());
88         }
89         
90         super.visitField_info(entry);
91     }
92
93     public void visitMethod_info(Method_info entry) {
94         if (isCollectingMethodNames()) {
95             add(entry.getFullSignature());
96         }
97
98         Method_info previousMethod = currentMethod;
99         currentMethod = entry;
100         super.visitMethod_info(entry);
101         currentMethod = previousMethod;
102     }
103
104     public void visitLocalVariable(LocalVariable helper) {
105         if (isCollectingLocalNames()) {
106             add(currentMethod.getFullSignature() + ": " + helper.getName());
107         }
108
109         super.visitLocalVariable(helper);
110     }
111 }
112
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