1b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato/* 2b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * ProGuard -- shrinking, optimization, obfuscation, and preverification 3b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * of Java bytecode. 4b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * 5b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang * Copyright (c) 2002-2013 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.attribute.preverification; 22b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 23b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onoratoimport proguard.classfile.*; 24b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onoratoimport proguard.classfile.attribute.CodeAttribute; 25b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onoratoimport proguard.classfile.attribute.preverification.visitor.VerificationTypeVisitor; 26b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 27b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato/** 28b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * This VerificationType represents an Object type. 29b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * 30b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * @author Eric Lafortune 31b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato */ 32b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onoratopublic class ObjectType extends VerificationType 33b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato{ 34b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public int u2classIndex; 35b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 36b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 37b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 38b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato /** 39b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * Creates an uninitialized ObjectType. 40b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato */ 41b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public ObjectType() 42b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 43b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 44b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 45b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 46b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato /** 47b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * Creates an ObjectType that points to the given class constant. 48b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato */ 49b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public ObjectType(int u2classIndex) 50b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 51b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato this.u2classIndex = u2classIndex; 52b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 53b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 54b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 55b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // Implementations for VerificationType. 56b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 57b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public int getTag() 58b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 59b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato return OBJECT_TYPE; 60b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 61b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 62b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 63b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public void accept(Clazz clazz, Method method, CodeAttribute codeAttribute, int instructionOffset, VerificationTypeVisitor verificationTypeVisitor) 64b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 65b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato verificationTypeVisitor.visitObjectType(clazz, method, codeAttribute, instructionOffset, this); 66b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 67b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 68b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 69b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public void stackAccept(Clazz clazz, Method method, CodeAttribute codeAttribute, int instructionOffset, int stackIndex, VerificationTypeVisitor verificationTypeVisitor) 70b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 71b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato verificationTypeVisitor.visitStackObjectType(clazz, method, codeAttribute, instructionOffset, stackIndex, this); 72b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 73b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 74b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 75b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public void variablesAccept(Clazz clazz, Method method, CodeAttribute codeAttribute, int instructionOffset, int variableIndex, VerificationTypeVisitor verificationTypeVisitor) 76b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 77b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato verificationTypeVisitor.visitVariablesObjectType(clazz, method, codeAttribute, instructionOffset, variableIndex, this); 78b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 79b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 80b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 81b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // Implementations for Object. 82b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 83b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public boolean equals(Object object) 84b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 85b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato if (!super.equals(object)) 86b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 87b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato return false; 88b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 89b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 90b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato ObjectType other = (ObjectType)object; 91b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 92b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato return this.u2classIndex == other.u2classIndex; 93b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 94b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 95b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 96b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public int hashCode() 97b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 98b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato return super.hashCode() ^ 99b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato u2classIndex; 100b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 101b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 102b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 103b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public String toString() 104b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 105b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato return "a:" + u2classIndex; 106b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 107b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato} 108