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RoboVM fork of Soot - A Java optimization framework

There is a newer version: 2.5.0-9

/* 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);
    }
}