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Common Lisp implementation running on the JVM
There is a newer version: 1.9.2
/*
 * Operator.java
 *
 * Copyright (C) 2003-2005 Peter Graves
 * $Id$
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 * As a special exception, the copyright holders of this library give you
 * permission to link this library with independent modules to produce an
 * executable, regardless of the license terms of these independent
 * modules, and to copy and distribute the resulting executable under
 * terms of your choice, provided that you also meet, for each linked
 * independent module, the terms and conditions of the license of that
 * module.  An independent module is a module which is not derived from
 * or based on this library.  If you modify this library, you may extend
 * this exception to your version of the library, but you are not
 * obligated to do so.  If you do not wish to do so, delete this
 * exception statement from your version.
 */

package org.armedbear.lisp;

import static org.armedbear.lisp.Lisp.*;

public abstract class Operator extends LispObject
{
    protected LispObject lambdaName;

    private LispObject lambdaList;

    public final LispObject getLambdaName()
    {
        return lambdaName;
    }

    public final void setLambdaName(LispObject obj)
    {
        lambdaName = obj;
    }

    public final LispObject getLambdaList()
    {
        if(lambdaList == null) {
            DocString ds = getClass().getAnnotation(DocString.class);
            if(ds != null)
                lambdaList = new SimpleString(ds.args());
        }
        return lambdaList;
    }

    public final void setLambdaList(LispObject obj)
    {
        lambdaList = obj;
    }

    @Override
    public LispObject getParts()
    {
        LispObject result = NIL;
        result = result.push(new Cons("lambda-name", lambdaName));
        result = result.push(new Cons("lambda-list", lambdaList));
        return result.nreverse();
    }
}