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.classfile.editor;
22
23import proguard.classfile.attribute.visitor.LineNumberInfoVisitor;
24import proguard.classfile.attribute.*;
25import proguard.classfile.*;
26
27/**
28 * This LineNumberInfoVisitor adds all line numbers that it visits to the given
29 * target line number attribute.
30 */
31public class LineNumberInfoAdder
32implements   LineNumberInfoVisitor
33{
34    private final LineNumberTableAttributeEditor lineNumberTableAttributeEditor;
35
36
37    /**
38     * Creates a new LineNumberInfoAdder that will copy line numbers into the
39     * given target line number table.
40     */
41    public LineNumberInfoAdder(LineNumberTableAttribute targetLineNumberTableAttribute)
42    {
43        this.lineNumberTableAttributeEditor = new LineNumberTableAttributeEditor(targetLineNumberTableAttribute);
44    }
45
46
47    // Implementations for LineNumberInfoVisitor.
48
49    public void visitLineNumberInfo(Clazz clazz, Method method, CodeAttribute codeAttribute, LineNumberInfo lineNumberInfo)
50    {
51        // Create a new line number.
52        LineNumberInfo newLineNumberInfo =
53            new LineNumberInfo(lineNumberInfo.u2startPC,
54                               lineNumberInfo.u2lineNumber);
55
56        // Add it to the target.
57        lineNumberTableAttributeEditor.addLineNumberInfo(newLineNumberInfo);
58    }
59}
60