soot.UnknownType Maven / Gradle / Ivy
/* Soot - a J*va Optimization Framework
* Copyright (C) 1997-1999 Raja Vallee-Rai
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* Modified by the Sable Research Group and others 1997-1999.
* See the 'credits' file distributed with Soot for the complete list of
* contributors. (Soot is distributed at http://www.sable.mcgill.ca/soot)
*/
package soot;
import soot.util.*;
/**
* Soot representation used for not-yet-typed objects. Implemented as
* a singleton.
*/
public class UnknownType extends Type
{
public UnknownType( Singletons.Global g ) {}
public static UnknownType v() { return G.v().soot_UnknownType(); }
public int hashCode()
{
return 0x5CAE5357;
}
public boolean equals(Object t)
{
return this == t;
}
public String toString()
{
return ".unknown";
}
public void apply(Switch sw)
{
((TypeSwitch) sw).caseUnknownType(this);
}
/** Returns the least common superclass of this type and other. */
public Type merge(Type other, Scene cm)
{
if (other instanceof RefType)
return other;
throw new RuntimeException("illegal type merge: "
+ this + " and " + other);
}
}