org.armedbear.lisp.SpecialBindingsMark Maven / Gradle / Ivy
/*
* SpecialBindingsMark.java
*
* Copyright (C) 2009 Erik Huelsmann
* $Id$
*
* 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;
/** Class used to mark special bindings state.
* Returned by LispThread.markSpecialBindings() and consumed by
* LispThread.resetSpecialBindings() to abstract from the implementation.
*/
final public class SpecialBindingsMark {
/** The index in the specials array of the saved binding. */
int idx;
/** Special binding state to be restored */
// package level access
SpecialBinding binding;
SpecialBindingsMark next;
/** Constructor to be called by LispThread.markSpecialBindings() only */
// package level access
SpecialBindingsMark(int idx, SpecialBinding binding,
SpecialBindingsMark next) {
this.idx = idx;
this.binding = binding;
this.next = next;
}
}