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 local variables to a given local variable type table 27b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * attribute. 28b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * Local variable types to be added must have been filled out beforehand. 29b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * 30b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * @author Eric Lafortune 31b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato */ 32b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onoratopublic class LocalVariableTypeTableAttributeEditor 33b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato{ 34b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato private LocalVariableTypeTableAttribute targetLocalVariableTypeTableAttribute; 35b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 36b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 37b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato /** 38b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * Creates a new LocalVariableTypeTableAttributeEditor that will edit line numbers 39b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * in the given line number table attribute. 40b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato */ 41b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public LocalVariableTypeTableAttributeEditor(LocalVariableTypeTableAttribute targetLocalVariableTypeTableAttribute) 42b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 43b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato this.targetLocalVariableTypeTableAttribute = targetLocalVariableTypeTableAttribute; 44b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 45b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 46b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 47b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato /** 48b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * Adds a given line number to the line number table attribute. 49b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato */ 50b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public void addLocalVariableTypeInfo(LocalVariableTypeInfo localVariableTypeInfo) 51b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 52b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato int localVariableTypeTableLength = targetLocalVariableTypeTableAttribute.u2localVariableTypeTableLength; 53b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato LocalVariableTypeInfo[] localVariableTypeTable = targetLocalVariableTypeTableAttribute.localVariableTypeTable; 54b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 55b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // Make sure there is enough space for the new localVariableTypeInfo. 56b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato if (localVariableTypeTable.length <= localVariableTypeTableLength) 57b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 58b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato targetLocalVariableTypeTableAttribute.localVariableTypeTable = new LocalVariableTypeInfo[localVariableTypeTableLength+1]; 59b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato System.arraycopy(localVariableTypeTable, 0, 60b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato targetLocalVariableTypeTableAttribute.localVariableTypeTable, 0, 61b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato localVariableTypeTableLength); 62b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato localVariableTypeTable = targetLocalVariableTypeTableAttribute.localVariableTypeTable; 63b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 64b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 65b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // Add the localVariableTypeInfo. 66b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato localVariableTypeTable[targetLocalVariableTypeTableAttribute.u2localVariableTypeTableLength++] = localVariableTypeInfo; 67b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 68b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato}