56 lines
2.1 KiB
Java
56 lines
2.1 KiB
Java
/*
|
|
* 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();
|
|
}
|
|
}
|