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


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 import java.util.*;
36
37 public class LoadListenerBase implements LoadListener {
38     private LinkedList groups = new LinkedList();
39     private Collection visitedFiles = new HashSet();
40     
41     protected GroupData getCurrentGroup() {
42         GroupData result = null;
43
44         if (!groups.isEmpty()) {
45             result = (GroupData) groups.getLast();
46         }
47         
48         return result;
49     }
50
51     protected Collection getVisitedFiles() {
52         return visitedFiles;
53     }
54     
55     public void beginSession(LoadEvent event) {
56         // Do nothing
57 }
58     
59     public void beginGroup(LoadEvent event) {
60         groups.add(new GroupData(event.getGroupName(), event.getSize()));
61     }
62
63     public void beginFile(LoadEvent event) {
64         getCurrentGroup().incrementCount();
65     }
66
67     public void beginClassfile(LoadEvent event) {
68         // Do nothing
69 }
70
71     public void endClassfile(LoadEvent event) {
72         visitedFiles.add(event.getFilename());
73     }
74
75     public void endFile(LoadEvent event) {
76         // Do nothing
77 }
78
79     public void endGroup(LoadEvent event) {
80         visitedFiles.add(event.getGroupName());
81         groups.removeLast();
82     }
83
84     public void endSession(LoadEvent event) {
85         // Do nothing
86 }
87 }
88
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