1 /* 2 * ProGuard -- shrinking, optimization, obfuscation, and preverification 3 * of Java bytecode. 4 * 5 * Copyright (c) 2002-2009 Eric Lafortune (eric (at) 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 */ 21 package proguard.classfile.editor; 22 23 import proguard.classfile.attribute.visitor.LocalVariableTypeInfoVisitor; 24 import proguard.classfile.attribute.*; 25 import proguard.classfile.*; 26 27 /** 28 * This LocalVariableTypeInfoVisitor adds all line numbers that it visits to the given 29 * target line number attribute. 30 */ 31 public class LocalVariableTypeInfoAdder 32 implements LocalVariableTypeInfoVisitor 33 { 34 private final ConstantAdder constantAdder; 35 private final LocalVariableTypeTableAttributeEditor localVariableTypeTableAttributeEditor; 36 37 38 /** 39 * Creates a new LocalVariableTypeInfoAdder that will copy line numbers into the 40 * given target line number table. 41 */ 42 public LocalVariableTypeInfoAdder(ProgramClass targetClass, 43 LocalVariableTypeTableAttribute targetLocalVariableTypeTableAttribute) 44 { 45 this.constantAdder = new ConstantAdder(targetClass); 46 this.localVariableTypeTableAttributeEditor = new LocalVariableTypeTableAttributeEditor(targetLocalVariableTypeTableAttribute); 47 } 48 49 50 // Implementations for LocalVariableTypeInfoVisitor. 51 52 public void visitLocalVariableTypeInfo(Clazz clazz, Method method, CodeAttribute codeAttribute, LocalVariableTypeInfo localVariableTypeInfo) 53 { 54 // Create a new line number. 55 LocalVariableTypeInfo newLocalVariableTypeInfo = 56 new LocalVariableTypeInfo(localVariableTypeInfo.u2startPC, 57 localVariableTypeInfo.u2length, 58 constantAdder.addConstant(clazz, localVariableTypeInfo.u2nameIndex), 59 constantAdder.addConstant(clazz, localVariableTypeInfo.u2signatureIndex), 60 localVariableTypeInfo.u2index); 61 62 // TODO: Clone array. 63 newLocalVariableTypeInfo.referencedClasses = localVariableTypeInfo.referencedClasses; 64 65 // Add it to the target. 66 localVariableTypeTableAttributeEditor.addLocalVariableTypeInfo(newLocalVariableTypeInfo); 67 } 68 }