1/*
2 * ProGuard -- shrinking, optimization, obfuscation, and preverification
3 *             of Java bytecode.
4 *
5 * Copyright (c) 2002-2013 Eric Lafortune (eric@graphics.cornell.edu)
6 *
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the Free
9 * Software Foundation; either version 2 of the License, or (at your option)
10 * any later version.
11 *
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * more details.
16 *
17 * You should have received a copy of the GNU General Public License along
18 * with this program; if not, write to the Free Software Foundation, Inc.,
19 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 */
21package proguard.optimize.evaluation;
22
23import proguard.classfile.Clazz;
24import proguard.classfile.attribute.CodeAttribute;
25import proguard.evaluation.BasicBranchUnit;
26import proguard.evaluation.value.Value;
27
28/**
29 * This BranchUnit remembers the branch unit commands that are invoked on it.
30 *
31 * @author Eric Lafortune
32 */
33class   TracedBranchUnit
34extends BasicBranchUnit
35{
36    // Implementations for BranchUnit.
37
38    public void branchConditionally(Clazz         clazz,
39                                    CodeAttribute codeAttribute,
40                                    int           offset,
41                                    int           branchTarget,
42                                    int           conditional)
43    {
44        if      (conditional == Value.ALWAYS)
45        {
46            // Always branch.
47            super.branch(clazz, codeAttribute, offset, branchTarget);
48        }
49        else if (conditional != Value.NEVER)
50        {
51            // Maybe branch.
52            super.branchConditionally(clazz, codeAttribute, offset, branchTarget, conditional);
53        }
54        else
55        {
56            super.setCalled();
57        }
58    }
59}
60