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Diffstat (limited to 'src/proguard/classfile/editor/LineNumberTableAttributeEditor.java')
| -rw-r--r-- | src/proguard/classfile/editor/LineNumberTableAttributeEditor.java | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/src/proguard/classfile/editor/LineNumberTableAttributeEditor.java b/src/proguard/classfile/editor/LineNumberTableAttributeEditor.java new file mode 100644 index 0000000..ab96b38 --- /dev/null +++ b/src/proguard/classfile/editor/LineNumberTableAttributeEditor.java @@ -0,0 +1,67 @@ +/* + * ProGuard -- shrinking, optimization, obfuscation, and preverification + * of Java bytecode. + * + * Copyright (c) 2002-2009 Eric Lafortune (eric@graphics.cornell.edu) + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the Free + * Software Foundation; either version 2 of the License, or (at your option) + * any later version. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ +package proguard.classfile.editor; + +import proguard.classfile.attribute.*; + +/** + * This class can add line numbers to a given line number table attribute. + * Line numbers to be added must have been filled out beforehand. + * + * @author Eric Lafortune + */ +public class LineNumberTableAttributeEditor +{ + private LineNumberTableAttribute targetLineNumberTableAttribute; + + + /** + * Creates a new LineNumberTableAttributeEditor that will edit line numbers + * in the given line number table attribute. + */ + public LineNumberTableAttributeEditor(LineNumberTableAttribute targetLineNumberTableAttribute) + { + this.targetLineNumberTableAttribute = targetLineNumberTableAttribute; + } + + + /** + * Adds a given line number to the line number table attribute. + */ + public void addLineNumberInfo(LineNumberInfo lineNumberInfo) + { + int lineNumberTableLength = targetLineNumberTableAttribute.u2lineNumberTableLength; + LineNumberInfo[] lineNumberTable = targetLineNumberTableAttribute.lineNumberTable; + + // Make sure there is enough space for the new lineNumberInfo. + if (lineNumberTable.length <= lineNumberTableLength) + { + targetLineNumberTableAttribute.lineNumberTable = new LineNumberInfo[lineNumberTableLength+1]; + System.arraycopy(lineNumberTable, 0, + targetLineNumberTableAttribute.lineNumberTable, 0, + lineNumberTableLength); + lineNumberTable = targetLineNumberTableAttribute.lineNumberTable; + } + + // Add the lineNumberInfo. + lineNumberTable[targetLineNumberTableAttribute.u2lineNumberTableLength++] = lineNumberInfo; + } +}
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