1 /* 2 * ProGuard -- shrinking, optimization, obfuscation, and preverification 3 * of Java bytecode. 4 * 5 * Copyright (c) 2002-2009 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.evaluation.value; 22 23 /** 24 * This class represents a partially evaluated top value. A top value is the 25 * dummy value that takes up the extra space when storing a long value or a 26 * double value. 27 * 28 * @author Eric Lafortune 29 */ 30 public class TopValue extends Category1Value 31 { 32 // Implementations for Value. 33 isSpecific()34 public boolean isSpecific() 35 { 36 return true; 37 } 38 isParticular()39 public boolean isParticular() 40 { 41 return true; 42 } 43 generalize(Value other)44 public final Value generalize(Value other) 45 { 46 return this.getClass() == other.getClass() ? this : null; 47 } 48 computationalType()49 public final int computationalType() 50 { 51 return TYPE_TOP; 52 } 53 internalType()54 public final String internalType() 55 { 56 return null; 57 } 58 59 60 // Implementations for Object. 61 equals(Object object)62 public boolean equals(Object object) 63 { 64 return object != null && 65 this.getClass() == object.getClass(); 66 } 67 68 hashCode()69 public int hashCode() 70 { 71 return this.getClass().hashCode(); 72 } 73 74 toString()75 public String toString() 76 { 77 return "T"; 78 } 79 } 80