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Java > Open Source Codes > edu > umd > cs > findbugs > InstructionScanner


1 /*
2  * FindBugs - Find bugs in Java programs
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;
21
22 import org.apache.bcel.generic.InstructionHandle;
23
24 import edu.umd.cs.findbugs.ba.Edge;
25
26 /**
27  * A scanner for implementing a state machine over a sequence
28  * of instructions and control edges.
29  */
30 public interface InstructionScanner {
31     /**
32      * Traverse an edge.
33      */
34     public void traverseEdge(Edge edge);
35
36     /**
37      * Traverse an instruction.
38      */
39     public void scanInstruction(InstructionHandle handle);
40
41     /**
42      * Return true if this scanner has completed, false otherwise.
43      */
44     public boolean isDone();
45 }
46
47 // vim:ts=4
48
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