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/*
* ProGuard -- shrinking, optimization, obfuscation, and preverification
* of Java bytecode.
*
* Copyright (c) 2002-2013 Eric Lafortune (eric@graphics.cornell.edu)
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package proguard.evaluation.value;
import proguard.classfile.Clazz;
/**
* This LongValue represents a reference value that is identified by a unique ID.
*
* @author Eric Lafortune
*/
final class IdentifiedReferenceValue extends ReferenceValue
{
private final ValueFactory valuefactory;
private final int id;
/**
* Creates a new long value with the given ID.
*/
public IdentifiedReferenceValue(String type,
Clazz referencedClass,
boolean mayBeNull,
ValueFactory valuefactory,
int id)
{
super(type, referencedClass, mayBeNull);
this.valuefactory = valuefactory;
this.id = id;
}
// Implementations for ReferenceValue.
public int equal(ReferenceValue other)
{
return this.equals(other) ? ALWAYS : MAYBE;
}
// Implementations of binary methods of ReferenceValue.
public ReferenceValue generalize(ReferenceValue other)
{
// Remove the ID if both values don't share the same ID.
return this.equals(other) ?
this :
new ReferenceValue(type, referencedClass, mayBeNull).generalize(other);
}
// Implementations for Value.
public boolean isSpecific()
{
return true;
}
// Implementations for Object.
public boolean equals(Object object)
{
return this == object ||
super.equals(object) &&
this.valuefactory.equals(((IdentifiedReferenceValue)object).valuefactory) &&
this.id == ((IdentifiedReferenceValue)object).id;
}
public int hashCode()
{
return super.hashCode() ^
valuefactory.hashCode() ^
id;
}
public String toString()
{
return super.toString()+'#'+id;
}
}
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