/*
* Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017,
* 2018, 2019, 2020
* Jonathan Schleifer <js@nil.im>
*
* All rights reserved.
*
* This file is part of ObjFW. It may be distributed under the terms of the
* Q Public License 1.0, which can be found in the file LICENSE.QPL included in
* the packaging of this file.
*
* Alternatively, it may be distributed under the terms of the GNU General
* Public License, either version 2 or 3, which can be found in the file
* LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
* file.
*/
#import "OFObject.h"
#import "OFASN1DERRepresentation.h"
#import "OFJSONRepresentation.h"
#import "OFMessagePackRepresentation.h"
#import "OFSerialization.h"
OF_ASSUME_NONNULL_BEGIN
/**
* @class OFNull OFNull.h ObjFW/OFNull.h
*
* @brief A class for representing null values in collections.
*/
OF_SUBCLASSING_RESTRICTED
@interface OFNull: OFObject <OFCopying, OFSerialization, OFJSONRepresentation,
OFMessagePackRepresentation, OFASN1DERRepresentation>
/**
* @brief Returns an OFNull singleton.
*
* @return An OFNull singleton
*/
+ (OFNull *)null;
@end
OF_ASSUME_NONNULL_END