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

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


public abstract class AbstractStaticInvokeExpr extends AbstractInvokeExpr implements StaticInvokeExpr
{
    AbstractStaticInvokeExpr(SootMethodRef methodRef, List args)
    {
        this(methodRef, new ValueBox[args.size()]);

        for(int i = 0; i < args.size(); i++)
            this.argBoxes[i] = Jimple.v().newImmediateBox((Value) args.get(i));
    }

    public boolean equivTo(Object o)
    {
        if (o instanceof AbstractStaticInvokeExpr)
        {
            AbstractStaticInvokeExpr ie = (AbstractStaticInvokeExpr)o;
            if (!(getMethod().equals(ie.getMethod()) && 
                  argBoxes.length == ie.argBoxes.length))
                return false;
            for (ValueBox element : argBoxes)
				if (!(element.getValue().equivTo(element.getValue())))
                    return false;
            return true;
        }
        return false;
    }

    /** Returns a hash code for this object, consistent with structural equality. */
    public int equivHashCode() 
    {
        return getMethod().equivHashCode();
    }

    public abstract Object clone();
    
    protected AbstractStaticInvokeExpr(SootMethodRef methodRef, ValueBox[] argBoxes)
    {
        if( !methodRef.isStatic() ) throw new RuntimeException("wrong static-ness");
        this.methodRef = methodRef; this.argBoxes = argBoxes;
    }

    public String toString()
    {
        StringBuffer buffer = new StringBuffer();

        buffer.append(Jimple.STATICINVOKE + " " + methodRef.getSignature() + "(");

        for(int i = 0; i < argBoxes.length; i++)
        {
            if(i != 0)
                buffer.append(", ");

            buffer.append(argBoxes[i].getValue().toString());
        }

        buffer.append(")");

        return buffer.toString();
    }

    public void toString(UnitPrinter up)
    {
        up.literal(Jimple.STATICINVOKE);
        up.literal(" ");
        up.methodRef(methodRef);
        up.literal("(");

        for(int i = 0; i < argBoxes.length; i++)
        {
            if(i != 0)
                up.literal(", ");

            argBoxes[i].toString(up);
        }

        up.literal(")");
    }

    public List getUseBoxes()
    {
        List list = new ArrayList();

        for (ValueBox element : argBoxes) {
            list.addAll(element.getValue().getUseBoxes());
            list.add(element);
        }

        return list;
    }

    public void apply(Switch sw)
    {
        ((ExprSwitch) sw).caseStaticInvokeExpr(this);
    }

}