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Java > Open Source Codes > edu > umd > cs > findbugs > ba > StackDepth


1 /*
2  * Bytecode Analysis Framework
3  * Copyright (C) 2003,2004 University of Maryland
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 edu.umd.cs.findbugs.ba;
21
22 /**
23  * Dataflow fact to represent the depth of the Java operand stack.
24  *
25  * @see StackDepthAnalysis
26  */
27 public class StackDepth {
28     private int depth;
29
30     /**
31      * Constructor.
32      *
33      * @param depth the stack depth
34      */
35     public StackDepth(int depth) {
36         this.depth = depth;
37     }
38
39     /**
40      * Get the stack depth.
41      */
42     public int getDepth() {
43         return depth;
44     }
45
46     /**
47      * Set the stack depth.
48      */
49     public void setDepth(int depth) {
50         this.depth = depth;
51     }
52
53     @Override JavaDoc
54          public String JavaDoc toString() {
55         if (getDepth() == StackDepthAnalysis.TOP)
56             return "[TOP]";
57         else if (getDepth() == StackDepthAnalysis.BOTTOM)
58             return "[BOTTOM]";
59         else
60             return "[" + String.valueOf(depth) + "]";
61     }
62 }
63
64 // vim:ts=4
65
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