/* Interface for Objective C NeXT-compatible Storage object
   Copyright (C) 1993,1994 Free Software Foundation, Inc.

   Written by:  Kresten Krab Thorup <krab@iesd.auc.dk>
   Dept. of Mathematics and Computer Science, Aalborg U., Denmark

   This file is part of the Gnustep Base Library.

   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library 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
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public
   License along with this library; if not, write to the Free
   Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

/******************************************************************
  TODO:
   Does not implement methods for archiving itself.
******************************************************************/

#ifndef __Storage_h_INCLUDE_GNU
#define __Storage_h_INCLUDE_GNU

#include <AppKit/AppKit.h>

@interface Storage:NSObject
{
	@public void *dataPtr;				/* data of the Storage object */
	const char *description;			/* Element description */
	NSUInteger  numElements;			/* Actual number of elements */
	NSUInteger  maxElements;			/* Total allocated elements */
	NSUInteger  elementSize;			/* Element size */
}

/* Creating, freeing, initializing, and emptying */

-init;
-initCount:(NSUInteger)
numSlots    elementSize:(NSUInteger) sizeInBytes
	description:(const char *) elemDesc;
-(void) dealloc;
-empty;
-copy;

/* Manipulating the elements */

-(BOOL) isEqual:anObject;
-(const char *) description;
-(NSUInteger) count;
-(void *) elementAt:(NSUInteger) index;
-replaceElementAt:(NSUInteger)
index       with:(void *) anElement;

-setNumSlots:(NSUInteger) numSlots;
-setAvailableCapacity:(NSUInteger) numSlots;
-addElement:(void *) anElement;
-removeLastElement;
-insertElement:(void *)
anElement   at:(NSUInteger) index;

-removeElementAt:(NSUInteger) index;

/* Archiving */

-write:(TypedStream *) stream;
-read:(TypedStream *) stream;

/* old-style creation */

+new;
+newCount:(NSUInteger)
count       elementSize:(NSUInteger) sizeInBytes
	description:(const char *) descriptor;

@end typedef struct {
	@defs (Storage)
} NXStorageId;


#endif /* __Storage_h_INCLUDE_GNU */