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      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.evaluation.value;
     22 
     23 /**
     24  * This DoubleValue represents the result of a binary operation on two double
     25  * values.
     26  *
     27  * @author Eric Lafortune
     28  */
     29 final class CompositeDoubleValue extends SpecificDoubleValue
     30 {
     31     public static final byte ADD       = '+';
     32     public static final byte SUBTRACT  = '-';
     33     public static final byte MULTIPLY  = '*';
     34     public static final byte DIVIDE    = '/';
     35     public static final byte REMAINDER = '%';
     36 
     37 
     38     private final DoubleValue doubleValue1;
     39     private final byte        operation;
     40     private final DoubleValue doubleValue2;
     41 
     42 
     43     /**
     44      * Creates a new composite double value of the two given double values
     45      * and the given operation.
     46      */
     47     public CompositeDoubleValue(DoubleValue doubleValue1,
     48                                 byte        operation,
     49                                 DoubleValue doubleValue2)
     50     {
     51         this.doubleValue1 = doubleValue1;
     52         this.operation    = operation;
     53         this.doubleValue2 = doubleValue2;
     54     }
     55 
     56 
     57     // Implementations for Object.
     58 
     59     public boolean equals(Object object)
     60     {
     61         return this == object ||
     62                super.equals(object) &&
     63                this.doubleValue1.equals(((CompositeDoubleValue)object).doubleValue1) &&
     64                this.operation        == ((CompositeDoubleValue)object).operation     &&
     65                this.doubleValue2.equals(((CompositeDoubleValue)object).doubleValue2);
     66     }
     67 
     68 
     69     public int hashCode()
     70     {
     71         return super.hashCode() ^
     72                doubleValue1.hashCode() ^
     73                doubleValue2.hashCode();
     74     }
     75 
     76 
     77     public String toString()
     78     {
     79         return "("+doubleValue1+((char)operation)+doubleValue2+")";
     80     }
     81 }