ObjFW  Artifact [820a727986]

Artifact 820a727986184f7ced9c907b528a9638d9cd479f1429cda04f96f8fb08b532e8:

• File src/OFNull.m — part of check-in [6ce0093f8d] at 2023-04-10 19:22:32 on branch trunk — Remove OFSerialization

  While the idea sounds nice that the tag name is the class, this means the
  serialization includes whether something is mutable or immutable. This means
  doing as much as making something immutable changes the serialization, which
  can then cause issues after being deserialized. (user: js, size: 1741) [annotate] [blame] [check-ins using] [more...]

/*
 * Copyright (c) 2008-2023 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.
 */

#include "config.h"

#import "OFNull.h"
#import "OFData.h"
#import "OFString.h"

#import "OFInvalidArgumentException.h"

@interface OFNull ()
- (OFString *)
    of_JSONRepresentationWithOptions: (OFJSONRepresentationOptions)options
			       depth: (size_t)depth;
@end

static OFNull *null = nil;

@implementation OFNull
+ (void)initialize
{
	null = [[self alloc] init];
}

+ (OFNull *)null
{
	return null;
}

- (OFString *)description
{
	return @"<null>";
}

- (id)copy
{
	return self;
}

- (OFString *)JSONRepresentation
{
	return [self of_JSONRepresentationWithOptions: 0 depth: 0];
}

- (OFString *)JSONRepresentationWithOptions:
    (OFJSONRepresentationOptions)options
{
	return [self of_JSONRepresentationWithOptions: options depth: 0];
}

- (OFString *)
    of_JSONRepresentationWithOptions: (OFJSONRepresentationOptions)options
					 depth: (size_t)depth
{
	return @"null";
}

- (OFData *)messagePackRepresentation
{
	uint8_t type = 0xC0;
	return [OFData dataWithItems: &type count: 1];
}

- (instancetype)autorelease
{
	return self;
}

- (instancetype)retain
{
	return self;
}

- (void)release
{
}

- (unsigned int)retainCount
{
	return OFMaxRetainCount;
}

- (void)dealloc
{
	OF_DEALLOC_UNSUPPORTED
}
@end