KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > org > objectweb > asm > optimizer > NameMapping


1 /***
2  * ASM: a very small and fast Java bytecode manipulation framework
3  * Copyright (c) 2000-2005 INRIA, France Telecom
4  * All rights reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  * 1. Redistributions of source code must retain the above copyright
10  * notice, this list of conditions and the following disclaimer.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  * notice, this list of conditions and the following disclaimer in the
13  * documentation and/or other materials provided with the distribution.
14  * 3. Neither the name of the copyright holders nor the names of its
15  * contributors may be used to endorse or promote products derived from
16  * this software without specific prior written permission.
17  *
18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
19  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
22  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
26  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
28  * THE POSSIBILITY OF SUCH DAMAGE.
29  */
30 package org.objectweb.asm.optimizer;
31
32 import java.io.FileInputStream JavaDoc;
33 import java.io.IOException JavaDoc;
34 import java.util.Properties JavaDoc;
35
36 import org.objectweb.asm.Type;
37
38 /**
39  * A mapping from names to names, used to rename classes, fields and methods.
40  *
41  * @author Eric Bruneton
42  */
43 public class NameMapping extends Properties JavaDoc {
44
45     public NameMapping(final String JavaDoc file) throws IOException JavaDoc {
46         load(new FileInputStream JavaDoc(file));
47     }
48
49     public String JavaDoc map(final String JavaDoc name) {
50         String JavaDoc s = (String JavaDoc) get(name);
51         if (s == null) {
52             int p = name.indexOf('.');
53             if (p != -1) {
54                 int q = name.indexOf('(');
55                 if (q != -1) {
56                     s = name.substring(p + 1, q);
57                 } else {
58                     s = name.substring(p + 1);
59                 }
60             } else {
61                 s = name;
62             }
63         }
64         return s;
65     }
66
67     public String JavaDoc fix(final String JavaDoc desc) {
68         if (desc.startsWith("(")) {
69             Type[] arguments = Type.getArgumentTypes(desc);
70             Type result = Type.getReturnType(desc);
71             for (int i = 0; i < arguments.length; ++i) {
72                 arguments[i] = fix(arguments[i]);
73             }
74             result = fix(result);
75             return Type.getMethodDescriptor(result, arguments);
76         } else {
77             return fix(Type.getType(desc)).getDescriptor();
78         }
79     }
80
81     private Type fix(final Type t) {
82         if (t.getSort() == Type.OBJECT) {
83             return Type.getType("L" + map(t.getInternalName()) + ";");
84         } else if (t.getSort() == Type.ARRAY) {
85             String JavaDoc s = fix(t.getElementType()).getDescriptor();
86             for (int i = 0; i < t.getDimensions(); ++i) {
87                 s = "[" + s;
88             }
89             return Type.getType(s);
90         } else {
91             return t;
92         }
93     }
94 }
95
Popular Tags