1 cananian 1.1.2.1 // Javap.java, created by cananian
2 cananian 1.1.2.1 // Copyright (C) 2002 C. Scott Ananian <cananian@alumni.princeton.edu>
3 cananian 1.1.2.1 // Licensed under the terms of the GNU GPL; see COPYING for details.
4 cananian 1.1.2.1 package harpoon.Main;
5 cananian 1.1.2.1
6 cananian 1.1.2.1 import harpoon.ClassFile.HClass;
7 cananian 1.1.2.1 import harpoon.ClassFile.HMethod;
8 cananian 1.1.2.1 import harpoon.ClassFile.Linker;
9 cananian 1.1.2.1 import harpoon.ClassFile.Loader;
10 cananian 1.1.2.1
11 cananian 1.1.2.1 import java.lang.reflect.Modifier;
12 cananian 1.1.2.1
13 cananian 1.1.2.1 /**
14 cananian 1.1.2.1 * <code>Javap2</code> is a clone of the Sun <code>javap</code> tool,
15 cananian 1.1.2.1 * using our higher-level bytecode file infrastructure.
16 cananian 1.1.2.1 *
17 cananian 1.1.2.1 * @author C. Scott Ananian <cananian@lesser-magoo.lcs.mit.edu>
18 cananian 1.2 * @version $Id: Javap2.java,v 1.2 2002/04/10 03:06:09 cananian Exp $
19 cananian 1.1.2.1 */
20 cananian 1.1.2.1 public class Javap2 {
21 cananian 1.1.2.1 public static void main(String[] args) throws ClassNotFoundException {
22 cananian 1.1.2.1 Linker linker = Loader.systemLinker;
23 cananian 1.1.2.1
24 cananian 1.1.2.1 HClass c = linker.forName(args[0]);
25 cananian 1.1.2.1 System.out.print(modString(c.getModifiers(), true));
26 cananian 1.1.2.1 System.out.print(getTypeName(c));
27 cananian 1.1.2.1 // supertypes
28 cananian 1.1.2.1 HClass sc = c.getSuperclass();
29 cananian 1.1.2.1 if (sc!=null && !sc.getName().equals("java.lang.Object")) {
30 cananian 1.1.2.1 System.out.print(" extends ");
31 cananian 1.1.2.1 System.out.print(getTypeName(sc));
32 cananian 1.1.2.1 }
33 cananian 1.1.2.1 // interfaces
34 cananian 1.1.2.1 HClass in[] = c.getInterfaces();
35 cananian 1.1.2.1 if (in.length>0) System.out.print(" implements ");
36 cananian 1.1.2.1 for (int i=0; i<in.length; i++) {
37 cananian 1.1.2.1 System.out.print(getTypeName(in[i]));
38 cananian 1.1.2.1 if (i+1<in.length) System.out.print(", ");
39 cananian 1.1.2.1 }
40 cananian 1.1.2.1 System.out.println();
41 cananian 1.1.2.1 System.out.println("{");
42 cananian 1.1.2.1 // methods
43 cananian 1.1.2.1 HMethod[] m = c.getDeclaredMethods();
44 cananian 1.1.2.1 for (int i=0; i<m.length; i++) {
45 cananian 1.1.2.1 System.out.print(" ");
46 cananian 1.1.2.1 System.out.print(modString(m[i].getModifiers(), false));
47 cananian 1.1.2.1 System.out.print(getTypeName(m[i].getReturnType()));
48 cananian 1.1.2.1 System.out.print(" ");
49 cananian 1.1.2.1 System.out.print(m[i].getName());
50 cananian 1.1.2.1 System.out.print("(");
51 cananian 1.1.2.1 // parameters
52 cananian 1.1.2.1 HClass[] p = m[i].getParameterTypes();
53 cananian 1.1.2.1 for (int j=0; j<p.length; j++) {
54 cananian 1.1.2.1 System.out.print(getTypeName(p[j]));
55 cananian 1.1.2.1 if (j+1<p.length) System.out.print(", ");
56 cananian 1.1.2.1 }
57 cananian 1.1.2.1 System.out.print(")");
58 cananian 1.1.2.1 // exceptions
59 cananian 1.1.2.1 HClass[] e = m[i].getExceptionTypes();
60 cananian 1.1.2.1 if (e.length > 0) System.out.print(" throws ");
61 cananian 1.1.2.1 for (int j=0; j<e.length; j++) {
62 cananian 1.1.2.1 System.out.print(getTypeName(e[j]));
63 cananian 1.1.2.1 if (j+1<e.length) System.out.print(", ");
64 cananian 1.1.2.1 }
65 cananian 1.1.2.1 System.out.print(";");
66 cananian 1.1.2.1 System.out.println();
67 cananian 1.1.2.1 }
68 cananian 1.1.2.1 System.out.println("}");
69 cananian 1.1.2.1 }
70 cananian 1.1.2.1 static String modString(int mods, boolean isClass) {
71 cananian 1.1.2.1 StringBuffer sb = new StringBuffer();
72 cananian 1.1.2.1 if (Modifier.isPrivate(mods)) sb.append("private ");
73 cananian 1.1.2.1 if (Modifier.isProtected(mods)) sb.append("protected ");
74 cananian 1.1.2.1 if (Modifier.isPublic(mods)) sb.append("public ");
75 cananian 1.1.2.1
76 cananian 1.1.2.1 if (Modifier.isAbstract(mods) && !Modifier.isInterface(mods))
77 cananian 1.1.2.1 sb.append("abstract ");
78 cananian 1.1.2.1 if (Modifier.isFinal(mods)) sb.append("final ");
79 cananian 1.1.2.1 if (Modifier.isInterface(mods)) sb.append("interface ");
80 cananian 1.1.2.1 else if (isClass) sb.append("class ");
81 cananian 1.1.2.1 if (Modifier.isNative(mods)) sb.append("native ");
82 cananian 1.1.2.1 if (Modifier.isStatic(mods)) sb.append("static ");
83 cananian 1.1.2.1 if (Modifier.isStrict(mods)) sb.append("strict ");
84 cananian 1.1.2.1 if (Modifier.isSynchronized(mods)) sb.append("synchronized ");
85 cananian 1.1.2.1 if (Modifier.isTransient(mods)) sb.append("transient ");
86 cananian 1.1.2.1 if (Modifier.isVolatile(mods)) sb.append("volatile ");
87 cananian 1.1.2.1 return sb.toString();
88 cananian 1.1.2.1 }
89 cananian 1.1.2.1 static String getTypeName(HClass hc) {
90 cananian 1.1.2.1 if (hc.isArray()) {
91 cananian 1.1.2.1 StringBuffer r = new StringBuffer();
92 cananian 1.1.2.1 HClass sup = hc;
93 cananian 1.1.2.1 int i=0;
94 cananian 1.1.2.1 for (; sup.isArray(); sup = sup.getComponentType())
95 cananian 1.1.2.1 i++;
96 cananian 1.1.2.1 r.append(sup.getName());
97 cananian 1.1.2.1 for (int j=0; j<i; j++)
98 cananian 1.1.2.1 r.append("[]");
99 cananian 1.1.2.1 return r.toString();
100 cananian 1.1.2.1 }
101 cananian 1.1.2.1 return hc.getName();
102 cananian 1.1.2.1 }
103 cananian 1.2 }