1b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato/* 2b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * ProGuard -- shrinking, optimization, obfuscation, and preverification 3b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * of Java bytecode. 4b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * 5b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * Copyright (c) 2002-2009 Eric Lafortune (eric@graphics.cornell.edu) 6b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * 7b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * This program is free software; you can redistribute it and/or modify it 8b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * under the terms of the GNU General Public License as published by the Free 9b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * Software Foundation; either version 2 of the License, or (at your option) 10b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * any later version. 11b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * 12b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * This program is distributed in the hope that it will be useful, but WITHOUT 13b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 14b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 15b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * more details. 16b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * 17b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * You should have received a copy of the GNU General Public License along 18b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * with this program; if not, write to the Free Software Foundation, Inc., 19b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 20b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato */ 21b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onoratopackage proguard.classfile.editor; 22b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 23b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onoratoimport proguard.classfile.attribute.*; 24b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 25b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato/** 26b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * This class can add line numbers to a given line number table attribute. 27b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * Line numbers to be added must have been filled out beforehand. 28b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * 29b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * @author Eric Lafortune 30b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato */ 31b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onoratopublic class LineNumberTableAttributeEditor 32b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato{ 33b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato private LineNumberTableAttribute targetLineNumberTableAttribute; 34b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 35b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 36b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato /** 37b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * Creates a new LineNumberTableAttributeEditor that will edit line numbers 38b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * in the given line number table attribute. 39b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato */ 40b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public LineNumberTableAttributeEditor(LineNumberTableAttribute targetLineNumberTableAttribute) 41b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 42b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato this.targetLineNumberTableAttribute = targetLineNumberTableAttribute; 43b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 44b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 45b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 46b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato /** 47b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * Adds a given line number to the line number table attribute. 48b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato */ 49b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public void addLineNumberInfo(LineNumberInfo lineNumberInfo) 50b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 51b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato int lineNumberTableLength = targetLineNumberTableAttribute.u2lineNumberTableLength; 52b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato LineNumberInfo[] lineNumberTable = targetLineNumberTableAttribute.lineNumberTable; 53b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 54b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // Make sure there is enough space for the new lineNumberInfo. 55b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato if (lineNumberTable.length <= lineNumberTableLength) 56b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 57b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato targetLineNumberTableAttribute.lineNumberTable = new LineNumberInfo[lineNumberTableLength+1]; 58b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato System.arraycopy(lineNumberTable, 0, 59b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato targetLineNumberTableAttribute.lineNumberTable, 0, 60b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato lineNumberTableLength); 61b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato lineNumberTable = targetLineNumberTableAttribute.lineNumberTable; 62b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 63b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 64b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // Add the lineNumberInfo. 65b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato lineNumberTable[targetLineNumberTableAttribute.u2lineNumberTableLength++] = lineNumberInfo; 66b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 67b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato}