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Java > Open Source Codes > asm1 > NotifierCodeAdapter


1 /*
2  * Java bytecode manipulation with ASM toolkit
3  * Copyright (c) 2004, Eugene Kuleshov
4  *
5  * This library is free software; you can redistribute it and/or
6  * modify it under the terms of the GNU Lesser General Public
7  * License as published by the Free Software Foundation; either
8  * version 2.1 of the License, or (at your option) any later version.
9  *
10  * This library is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13  * Lesser General Public License for more details.
14  *
15  * You should have received a copy of the GNU Lesser General Public
16  * License along with this library; if not, write to the Free Software
17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18  */
19
20 package asm1;
21
22 import org.objectweb.asm.CodeAdapter;
23 import org.objectweb.asm.CodeVisitor;
24 import org.objectweb.asm.Constants;
25
26
27 public class NotifierCodeAdapter extends CodeAdapter implements Constants {
28
29   private String JavaDoc className;
30
31   public NotifierCodeAdapter( CodeVisitor cv, String JavaDoc className) {
32     super( cv);
33     this.className = className;
34   }
35
36   public void visitInsn( int opcode) {
37     if( opcode==RETURN) {
38       String JavaDoc type = "java/util/ArrayList";
39       cv.visitVarInsn(ALOAD,0);
40       cv.visitTypeInsn(NEW,type);
41       cv.visitInsn(DUP);
42       cv.visitMethodInsn(INVOKESPECIAL,
43           type,"<init>","()V");
44       cv.visitFieldInsn(PUTFIELD, className,
45           "__lst", "L"+type+";");
46     }
47     cv.visitInsn(opcode);
48   }
49   
50 }
51
52
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