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Java > Open Source Codes > net > sf > retrotranslator > transformer > Backport


1 /***
2  * Retrotranslator: a Java bytecode transformer that translates Java classes
3  * compiled with JDK 5.0 into classes that can be run on JVM 1.4.
4  *
5  * Copyright (c) 2005 - 2007 Taras Puchko
6  * All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  * 1. Redistributions of source code must retain the above copyright
12  * notice, this list of conditions and the following disclaimer.
13  * 2. Redistributions in binary form must reproduce the above copyright
14  * notice, this list of conditions and the following disclaimer in the
15  * documentation and/or other materials provided with the distribution.
16  * 3. Neither the name of the copyright holders nor the names of its
17  * contributors may be used to endorse or promote products derived from
18  * this software without specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
24  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
30  * THE POSSIBILITY OF SUCH DAMAGE.
31  */
32 package net.sf.retrotranslator.transformer;
33
34 import java.util.*;
35
36 /**
37  * @author Taras Puchko
38  */
39 class Backport {
40
41     private String JavaDoc originalPrefix;
42     private String JavaDoc replacementPrefix;
43     private String JavaDoc originalName;
44     private String JavaDoc replacementName;
45
46     public Backport(String JavaDoc originalPrefix, String JavaDoc replacementPrefix, String JavaDoc originalName, String JavaDoc replacementName) {
47         this.originalPrefix = originalPrefix;
48         this.replacementPrefix = replacementPrefix;
49         this.originalName = originalName;
50         this.replacementName = replacementName;
51     }
52
53     public String JavaDoc getOriginalPrefix() {
54         return originalPrefix;
55     }
56
57     public String JavaDoc getReplacementPrefix() {
58         return replacementPrefix;
59     }
60
61     public String JavaDoc getOriginalName() {
62         return originalName;
63     }
64
65     public String JavaDoc getReplacementName() {
66         return replacementName;
67     }
68
69     public static List<Backport> asList(String JavaDoc s) {
70         ArrayList<Backport> result = new ArrayList<Backport>();
71         if (s != null) {
72             for (String JavaDoc token : s.split(";")) {
73                 result.add(Backport.valueOf(token));
74             }
75         }
76         return result;
77     }
78
79     private static Backport valueOf(String JavaDoc s) {
80         String JavaDoc original;
81         String JavaDoc replacement;
82         int index = s.indexOf(':');
83         if (index < 0) {
84             original = "";
85             replacement = toInternalName(s);
86         } else {
87             original = toInternalName(s.substring(0, index));
88             replacement = toInternalName(s.substring(index + 1));
89         }
90         return new Backport(toPrefix(original), toPrefix(replacement), original, replacement);
91     }
92
93     private static String JavaDoc toInternalName(String JavaDoc name) {
94         String JavaDoc result = name.replace('.', '/').trim();
95         if (result.startsWith("/") || result.endsWith("/")) {
96             throw new IllegalArgumentException JavaDoc("Illegal name: " + name);
97         }
98         return result;
99     }
100
101     private static String JavaDoc toPrefix(String JavaDoc name) {
102         return name.length() == 0 ? "" : name + '/';
103     }
104
105 }
106
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