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Java > Open Source Codes > jbet > cmd > disassemble


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 package jbet.cmd;
32 import jbet.*;
33 import java.io.*;
34 /*
35    Command object called by Jbet.doCommands().
36    run() parses the input using the supplied lexer.
37 */
38
39 public class disassemble implements Command
40 {
41     public int helplevel() { return 1; }
42     public String JavaDoc shorthelp() { return "disassemble a class or method"; }
43     public String JavaDoc longhelp() { return
44                    "jbet disassemble <class>\t\tDisassemble <class>\n" +
45                    "jbet disassemble <class>.<method>\tDisassemble <method>\n" +
46                    "The output is suitable for input to jbet assemble."; }
47
48     public void run (Lexer lexer) throws Exception JavaDoc {
49     LineWriter output = Jbet.output;
50     loop:
51     while(true) {
52         switch(lexer.read().type) {
53         case 'o':
54         lexer.push(Lexer.ST_STRING);
55         String JavaDoc filename = lexer.parse_string();
56         lexer.pop();
57         throw new IllegalStateException JavaDoc("-o option not implemented");
58
59         case Token.END_OF_OPTS: break loop;
60         default: lexer.unexpected(lexer.justread());
61         }
62     }
63
64     /* Parse a class, method, or field name from the lexer, and
65        load the specified object using Jbet.loader. */
66
67     Object JavaDoc thing = lexer.getThing (Jbet.default_class);
68
69     if ( thing instanceof ClassInfo )
70         ((ClassInfo) thing).disassemble(output, "");
71     else if ( thing instanceof MethodInfo )
72         ((MethodInfo) thing).disassemble(output, "");
73     else if ( thing instanceof FieldInfo )
74         ((FieldInfo) thing).disassemble(output, "");
75     }
76 }
77
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