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Java > Open Source Codes > jbet > cmd > print


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
39 public class print implements Command
40 {
41     public int helplevel() { return 1; }
42     public String JavaDoc shorthelp() { return "display info on a class, method, or field"; }
43     public String JavaDoc longhelp() {
44     return
45         "jbet print <class>\t\tShow pretty disassembly of class\n" +
46         "jbet print <class>.<method>\tShow pretty disassembly of method\n" +
47         "jbet print <class>.<field>\tDisplay field\n"; }
48
49     public void run (Lexer lexer) throws Exception JavaDoc {
50     //ok, so this is dumb
51 boolean printlines = false;
52     boolean printlocals = false;
53     boolean printcounts = false;
54     boolean printcp = false;
55
56     loop:
57     while(true) {
58         switch (lexer.read().type) {
59         case 'l': printlines = true; break;
60         case 'L': printlines = false; break;
61         case 'v': printlocals = true; break;
62         case 'V': printlocals = false; break;
63         case 'i': printcounts = true; break;
64         case 'c': printcp = true; break;
65         case Token.END_OF_OPTS: break loop;
66         }
67     }
68
69     /* Parse a class, method, or field name from the lexer, and
70        load the specified object using Jbet.loader. */
71     Object JavaDoc thing = lexer.getThing(Jbet.default_class);
72     lexer.term();
73
74     if (thing instanceof ClassInfo) {
75         ClassInfo cr = (ClassInfo) thing;
76         if (cr.dirty)
77         cr.resolveConstants();
78         cr.printout(Jbet.output, 2);
79         if (printcp)
80         cr.printcp(Jbet.output, 2);
81         cr.printMethods(Jbet.output, 2);
82         cr.printFields(Jbet.output, 2);
83     }
84     if (thing instanceof MethodInfo) {
85         MethodInfo mi = (MethodInfo) thing;
86         if (mi.cr.dirty)
87         mi.resolveConstants();
88         mi.printout(Jbet.output, false, printlines, printlocals, printcounts);
89     } if (thing instanceof FieldInfo) {
90         FieldInfo fi = (FieldInfo) thing;
91         if (fi.cr.dirty)
92         fi.resolveConstants();
93         Jbet.output.println( fi.recString() );
94     }
95     }
96 }
97
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