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/* Soot - a J*va Optimization Framework
 * Copyright (C) 1999 Patrick Lam
 *
 * 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.internal;

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

public class JGotoStmt extends AbstractStmt implements GotoStmt
{
    UnitBox targetBox;

    List targetBoxes;

    public JGotoStmt(Unit target)
    {
        this(Jimple.v().newStmtBox(target));
    }

    public JGotoStmt(UnitBox box)
    {
        this.targetBox = box;

        targetBoxes = new ArrayList();
        targetBoxes.add(this.targetBox);
        targetBoxes = Collections.unmodifiableList(targetBoxes);
    }

    public Object clone() 
    {
        return new JGotoStmt(getTarget());
    }

    public String toString()
    {
        Unit t = getTarget();
        String target = "(branch)";
        if(!t.branches())
            target = t.toString();
        return Jimple.GOTO + " [?= " + target + "]";
    }
    
    public void toString(UnitPrinter up) {
        up.literal(Jimple.GOTO);
        up.literal(" ");
        targetBox.toString(up);
    }
    
    public Unit getTarget()
    {
        return targetBox.getUnit();
    }

    public void setTarget(Unit target)
    {
        targetBox.setUnit(target);
    }

    public UnitBox getTargetBox()
    {
        return targetBox;
    }

    public List getUnitBoxes()
    {
        return targetBoxes;
    }

    public void apply(Switch sw)
    {
        ((StmtSwitch) sw).caseGotoStmt(this);
    }    
    
    
    public boolean fallsThrough(){return false;}        
    public boolean branches() { return true;}
    
}