Thu, 16 May 2013 12:14:19 -0700
Added tag jdk8-b90 for changeset 1ae0472ff3a0
1 /*
2 * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
25 import jdk.internal.org.objectweb.asm.*;
27 class Asmator {
28 static byte[] fixup(byte[] buf) throws java.io.IOException {
29 ClassReader cr = new ClassReader(buf);
30 ClassWriter cw = new ClassWriter(0);
31 ClassVisitor cv = new ClassVisitor(Opcodes.ASM4, cw) {
32 public MethodVisitor visitMethod(
33 final int access,
34 final String name,
35 final String desc,
36 final String signature,
37 final String[] exceptions)
38 {
39 MethodVisitor mv = super.visitMethod(access,
40 name,
41 desc,
42 signature,
43 exceptions);
44 if (mv == null) return null;
45 if (name.equals("callme")) {
46 // make receiver go dead!
47 mv.visitInsn(Opcodes.ACONST_NULL);
48 mv.visitVarInsn(Opcodes.ASTORE, 0);
49 }
50 return mv;
51 }
52 };
53 cr.accept(cv, 0);
54 return cw.toByteArray();
55 }
56 }