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Java > Open Source Codes > javassist > convert > TransformAfter


1 /*
2  * Javassist, a Java-bytecode translator toolkit.
3  * Copyright (C) 1999-2005 Shigeru Chiba. All Rights Reserved.
4  *
5  * The contents of this file are subject to the Mozilla Public License Version
6  * 1.1 (the "License"); you may not use this file except in compliance with
7  * the License. Alternatively, the contents of this file may be used under
8  * the terms of the GNU Lesser General Public License Version 2.1 or later.
9  *
10  * Software distributed under the License is distributed on an "AS IS" basis,
11  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
12  * for the specific language governing rights and limitations under the
13  * License.
14  */
15
16 package javassist.convert;
17
18 import javassist.CtMethod;
19 import javassist.NotFoundException;
20 import javassist.bytecode.*;
21
22 public class TransformAfter extends TransformBefore {
23     public TransformAfter(Transformer next,
24                            CtMethod origMethod, CtMethod afterMethod)
25         throws NotFoundException
26     {
27         super(next, origMethod, afterMethod);
28     }
29
30     protected int match2(int pos, CodeIterator iterator) throws BadBytecode {
31         iterator.move(pos);
32         iterator.insert(saveCode);
33         iterator.insert(loadCode);
34         int p = iterator.insertGap(3);
35         iterator.insert(loadCode);
36         pos = iterator.next();
37         iterator.writeByte(iterator.byteAt(pos), p);
38         iterator.write16bit(iterator.u16bitAt(pos + 1), p + 1);
39         iterator.writeByte(INVOKESTATIC, pos);
40         iterator.write16bit(newIndex, pos + 1);
41         iterator.move(p);
42         return iterator.next();
43     }
44 }
45
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