/* GLIB - Library of useful routines for C programming

 * Copyright (C) 1995-1997  Peter Mattis, Spencer Kimball and Josh MacDonald

 *

 * 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 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 GLib Team and others 1997-2000.  See the AUTHORS

 * file for a list of people on the GLib Team.  See the ChangeLog

 * files for a list of changes.  These files are distributed with

 * GLib at ftp://ftp.gtk.org/pub/gtk/.

 */

#if !defined (__GLIB_H_INSIDE__) && !defined (GLIB_COMPILATION)

#error "Only <glib.h> can be included directly."

#endif

#ifndef __G_TRASH_STACK_H__

#define __G_TRASH_STACK_H__

#include <glib/gutils.h>

G_BEGIN_DECLS

typedef struct _GTrashStack GTrashStack;

struct _GTrashStack

{

  GTrashStack *next;

};

G_INLINE_FUNC void      g_trash_stack_push   (GTrashStack **stack_p,

                                              gpointer      data_p);

G_INLINE_FUNC gpointer  g_trash_stack_pop    (GTrashStack **stack_p);

G_INLINE_FUNC gpointer  g_trash_stack_peek   (GTrashStack **stack_p);

G_INLINE_FUNC guint     g_trash_stack_height (GTrashStack **stack_p);

#if defined (G_CAN_INLINE) || defined (__G_TRASH_STACK_C__)

G_INLINE_FUNC void

g_trash_stack_push (GTrashStack **stack_p,

                    gpointer      data_p)

{

  GTrashStack *data = (GTrashStack *) data_p;

  data->next = *stack_p;

  *stack_p = data;

}

G_INLINE_FUNC gpointer

g_trash_stack_pop (GTrashStack **stack_p)

{

  GTrashStack *data;

  data = *stack_p;

  if (data)

    {

      *stack_p = data->next;

      /* NULLify private pointer here, most platforms store NULL as

       * subsequent 0 bytes

       */

      data->next = NULL;

    }

  return data;

}

G_INLINE_FUNC gpointer

g_trash_stack_peek (GTrashStack **stack_p)

{

  GTrashStack *data;

  data = *stack_p;

  return data;

}

G_INLINE_FUNC guint

g_trash_stack_height (GTrashStack **stack_p)

{

  GTrashStack *data;

  guint i = 0;

  for (data = *stack_p; data; data = data->next)

    i++;

  return i;

}

#endif  /* G_CAN_INLINE || __G_TRASH_STACK_C__ */

G_END_DECLS

#endif /* __G_UTILS_H__ */