1 /* 2 * ProGuard -- shrinking, optimization, obfuscation, and preverification 3 * of Java bytecode. 4 * 5 * Copyright (c) 2002-2014 Eric Lafortune (eric@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.attribute.preverification; 22 23 import proguard.classfile.*; 24 import proguard.classfile.attribute.CodeAttribute; 25 import proguard.classfile.attribute.preverification.visitor.VerificationTypeVisitor; 26 27 /** 28 * This VerificationType represents a Top type. 29 * 30 * @author Eric Lafortune 31 */ 32 public class TopType extends VerificationType 33 { 34 // Implementations for VerificationType. 35 getTag()36 public int getTag() 37 { 38 return TOP_TYPE; 39 } 40 41 accept(Clazz clazz, Method method, CodeAttribute codeAttribute, int instructionOffset, VerificationTypeVisitor verificationTypeVisitor)42 public void accept(Clazz clazz, Method method, CodeAttribute codeAttribute, int instructionOffset, VerificationTypeVisitor verificationTypeVisitor) 43 { 44 verificationTypeVisitor.visitTopType(clazz, method, codeAttribute, instructionOffset, this); 45 } 46 47 stackAccept(Clazz clazz, Method method, CodeAttribute codeAttribute, int instructionOffset, int stackIndex, VerificationTypeVisitor verificationTypeVisitor)48 public void stackAccept(Clazz clazz, Method method, CodeAttribute codeAttribute, int instructionOffset, int stackIndex, VerificationTypeVisitor verificationTypeVisitor) 49 { 50 verificationTypeVisitor.visitStackTopType(clazz, method, codeAttribute, instructionOffset, stackIndex, this); 51 } 52 53 variablesAccept(Clazz clazz, Method method, CodeAttribute codeAttribute, int instructionOffset, int variableIndex, VerificationTypeVisitor verificationTypeVisitor)54 public void variablesAccept(Clazz clazz, Method method, CodeAttribute codeAttribute, int instructionOffset, int variableIndex, VerificationTypeVisitor verificationTypeVisitor) 55 { 56 verificationTypeVisitor.visitVariablesTopType(clazz, method, codeAttribute, instructionOffset, variableIndex, this); 57 } 58 59 60 // Implementations for Object. 61 toString()62 public String toString() 63 { 64 return "T"; 65 } 66 } 67