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Java > Open Source Codes > jbet > cmd > rename


1 /*
2  * JBET - Java Binary Enhancement Tool
3  * Copyright (c) 2003 Networks Associates Technology, Inc.
4  *
5  * This software was developed under DARPA/SPAWAR contract
6  * N66001-00-C-8602 "SPMA" as part of the
7  * DARPA OASIS research program.
8  *
9  * Redistribution and use in source and binary forms, with or without
10  * modification, are permitted provided that the following conditions
11  * are met:
12  * 1. Redistributions of source code must retain the above copyright
13  * notice, this list of conditions and the following disclaimer.
14  * 2. Redistributions in binary form must reproduce the above copyright
15  * notice, this list of conditions and the following disclaimer in the
16  * documentation and/or other materials provided with the distribution.
17  *
18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19  * 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 AUTHOR OR CONTRIBUTORS BE LIABLE
22  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28  * SUCH DAMAGE.
29  */
30
31 /*
32    Command object called by Jbet.doCommands().
33    run() parses the input using the supplied lexer.
34 */
35
36 package jbet.cmd;
37 import jbet.*;
38 import java.io.*;
39 import java.util.*;
40
41 class rename implements Command
42 {
43     public int helplevel() { return 4; }
44     public String JavaDoc shorthelp() { return "rename a method"; }
45     public String JavaDoc longhelp() {
46     return
47         "jbet delete <class>.<method> <newname>\t\tRename <method> to <newname>\n"; }
48
49     public void run (Lexer lexer) throws Exception JavaDoc
50     {
51     lexer.match(Token.END_OF_OPTS);
52     Thing p = lexer.parse_element_with_default (Jbet.default_class, true);
53     String JavaDoc name = lexer.parse_name();
54     lexer.term();
55     renameMethod (p.cls, p.name, p.elem, name);
56     }
57
58     void renameMethod(String JavaDoc cname, String JavaDoc mname, String JavaDoc type, String JavaDoc newname) throws Exception JavaDoc {
59     ClassInfo cr = Jbet.loader.getClass(cname);
60     MethodInfo method = cr.findMethod(mname, type);
61     if (method == null)
62         throw new GlobalException (Util.methString (cname, mname, type) + " not found in " +
63                        cname);
64     if ( cr.findMethod(newname, method.descriptor) != null )
65         throw new GlobalException(newname + ":" + method.descriptor +
66                      " allready exists in " + cname);
67     method.name = newname;
68     Jbet.info.println("renamed " + cname + "." + mname + ":" +
69                 method.descriptor + " to " + newname );
70     cr.setDirty();
71     }
72
73 }
74
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