| /* |
| * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| import jdk.internal.org.objectweb.asm.*; |
| |
| class Asmator { |
| static byte[] fixup(byte[] buf) throws java.io.IOException { |
| ClassReader cr = new ClassReader(buf); |
| ClassWriter cw = new ClassWriter(0); |
| ClassVisitor cv = new ClassVisitor(Opcodes.ASM4, cw) { |
| public MethodVisitor visitMethod( |
| final int access, |
| final String name, |
| final String desc, |
| final String signature, |
| final String[] exceptions) |
| { |
| MethodVisitor mv = super.visitMethod(access, |
| name, |
| desc, |
| signature, |
| exceptions); |
| if (mv == null) return null; |
| if (name.equals("callme")) { |
| // make receiver go dead! |
| mv.visitInsn(Opcodes.ACONST_NULL); |
| mv.visitVarInsn(Opcodes.ASTORE, 0); |
| } |
| return mv; |
| } |
| }; |
| cr.accept(cv, 0); |
| return cw.toByteArray(); |
| } |
| } |