// -*- C++ -*-

/**
 * WordInfo.h
 *
 * Description: declaration of a class which preserves information about
 * words recognized by the speech engine.
 *
 * Copyright (c) 2001, Deborah Kaplan and Jessica Perry Hekman
 * See the LICENSE file. All rights not granted therein are reserved.
 *
 * @author Deborah Kaplan
 * @author Jessica Perry Hekman
 * $Revision: 1.1 $
 *
 * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 */

/*
 * LinkedList is a class for maintaining a doubly-linked list.
*/

#include <stddef.h>

class LinkedList {
 public:

  // constructor
  LinkedList();

  // destructor
  ~LinkedList();

  LinkedList *getNext() {
    return (_next);
  }

  LinkedList *getPrev() {
    return(_prev);
  }

  void setNext(LinkedList *next) {
    _next = next;
  }

  void setPrev(LinkedList *prev) {
    _prev = prev;
  }

  void remove();

  /* Adds a new item along the "next" axis: it is a newer thing */
  void append(LinkedList *newList) {
    setNext(newList);
    newList->setPrev(this);
  }

  /* Remove all objects after this one along the "prev" axis */
  int deleteOlderObjects();

private:

  LinkedList *_next;
  LinkedList *_prev;

};