scouter.javassist.convert.TransformAfter Maven / Gradle / Ivy
/*
* Javassist, a Java-bytecode translator toolkit.
* Copyright (C) 1999- Shigeru Chiba. All Rights Reserved.
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. Alternatively, the contents of this file may be used under
* the terms of the GNU Lesser General Public License Version 2.1 or later,
* or the Apache License Version 2.0.
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*/
package scouter.javassist.convert;
import scouter.javassist.CtMethod;
import scouter.javassist.NotFoundException;
import scouter.javassist.bytecode.BadBytecode;
import scouter.javassist.bytecode.CodeIterator;
public class TransformAfter extends TransformBefore {
public TransformAfter(Transformer next,
CtMethod origMethod, CtMethod afterMethod)
throws NotFoundException
{
super(next, origMethod, afterMethod);
}
@Override
protected int match2(int pos, CodeIterator iterator) throws BadBytecode {
iterator.move(pos);
iterator.insert(saveCode);
iterator.insert(loadCode);
int p = iterator.insertGap(3);
iterator.setMark(p);
iterator.insert(loadCode);
pos = iterator.next();
p = iterator.getMark();
iterator.writeByte(iterator.byteAt(pos), p);
iterator.write16bit(iterator.u16bitAt(pos + 1), p + 1);
iterator.writeByte(INVOKESTATIC, pos);
iterator.write16bit(newIndex, pos + 1);
iterator.move(p);
return iterator.next();
}
}