org.armedbear.lisp.interactive_stream_p Maven / Gradle / Ivy
/*
* interactive_stream_p.java
*
* Copyright (C) 2004 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.*;
// ### interactive-stream-p
public final class interactive_stream_p extends Primitive
{
private interactive_stream_p()
{
super("interactive-stream-p", "stream");
}
@Override
public LispObject execute(LispObject arg)
{
if (arg instanceof Stream)
return ((Stream)arg).isInteractive() ? T : NIL;
return type_error(arg, Symbol.STREAM);
}
private static final Primitive INTERACTIVE_STREAM_P = new interactive_stream_p();
}