/* Soot - a J*va Optimization Framework
 * Copyright (C) 1997-1999 Raja Vallee-Rai
 * Copyright (C) 2004 Ondrej Lhotak
 *
 * 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.jimple;

import soot.tagkit.*;
import soot.*;
import soot.util.*;
import java.util.*;

public class StaticFieldRef implements FieldRef
{


	protected SootFieldRef fieldRef;

    protected StaticFieldRef(SootFieldRef fieldRef)
    {
        if( !fieldRef.isStatic() ) throw new RuntimeException("wrong static-ness");
        this.fieldRef = fieldRef;
    }

    public Object clone() 
    {
        return new StaticFieldRef(fieldRef);
    }

    public String toString()
    {
        return fieldRef.getSignature();
    }

    public void toString( UnitPrinter up ) {
        up.fieldRef(fieldRef);
    }

    public SootFieldRef getFieldRef()
    {
        return fieldRef;
    }

	public void setFieldRef(SootFieldRef fieldRef) {
		this.fieldRef = fieldRef;
	}
    public SootField getField()
    {
        return fieldRef.resolve();
    }

    public List getUseBoxes()
    {
        return AbstractUnit.emptyList;
    }

    public Type getType()
    {
        return fieldRef.type();
    }

    public void apply(Switch sw)
    {
        ((RefSwitch) sw).caseStaticFieldRef(this);
    }
    
    public boolean equivTo(Object o)
    {
        if (o instanceof StaticFieldRef)
            return ((StaticFieldRef)o).getField().equals(getField());
        
        return false;
    }

    public int equivHashCode()
    {
        return getField().equivHashCode();
    }

}