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Java > Open Source Codes > soot > jimple > toolkits > pointer > CastCheckTag


1 /* Soot - a J*va Optimization Framework
2  * Copyright (C) 2003 Ondrej Lhotak
3  *
4  * This library is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * This library is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  * Lesser General Public License for more details.
13  *
14  * You should have received a copy of the GNU Lesser General Public
15  * License along with this library; if not, write to the
16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17  * Boston, MA 02111-1307, USA.
18  */
19
20 package soot.jimple.toolkits.pointer;
21 import soot.tagkit.*;
22
23 /** Implements a tag that can be used to tell a VM whether a cast check can
24  * be eliminated or not. */
25 public class CastCheckTag implements Tag {
26     boolean eliminateCheck;
27     CastCheckTag( boolean eliminateCheck ) {
28     this.eliminateCheck = eliminateCheck;
29     }
30     public String JavaDoc getName() {
31     return "CastCheckTag";
32     }
33     public byte[] getValue() {
34     byte[] ret = new byte[1];
35     ret[0] = (byte) ( eliminateCheck ? 1 : 0 );
36     return ret;
37     }
38     public String JavaDoc toString() {
39     if( eliminateCheck ) {
40         return "This cast check can be eliminated.";
41     } else {
42         return "This cast check should NOT be eliminated.";
43     }
44     }
45     public boolean canEliminateCheck() {
46     return eliminateCheck;
47     }
48 }
49
50
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