/*
* Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017,
* 2018
* Jonathan Schleifer <js@heap.zone>
*
* 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 "OFValue.h"
#import "OFValue_bytes.h"
#import "OFValue_nonretainedObject.h"
#import "OFValue_pointer.h"
#import "OFMethodSignature.h"
#import "OFInvalidFormatException.h"
#import "OFOutOfMemoryException.h"
static struct {
Class isa;
} placeholder;
@interface OFValue_placeholder: OFValue
@end
@implementation OFValue_placeholder
- (instancetype)initWithBytes: (const void *)bytes
objCType: (const char *)objCType
{
return (id)[[OFValue_bytes alloc] initWithBytes: bytes
objCType: objCType];
}
- (instancetype)initWithPointer: (const void *)pointer
{
return (id)[[OFValue_pointer alloc] initWithPointer: pointer];
}
- (instancetype)initWithNonretainedObject: (id)object
{
return (id)[[OFValue_nonretainedObject alloc]
initWithNonretainedObject: object];
}
@end
@implementation OFValue
+ (void)initialize
{
if (self == [OFValue class])
placeholder.isa = [OFValue_placeholder class];
}
+ (instancetype)alloc
{
if (self == [OFValue class])
return (id)&placeholder;
return [super alloc];
}
+ (instancetype)valueWithBytes: (const void *)bytes
objCType: (const char *)objCType
{
return [[[self alloc] initWithBytes: bytes
objCType: objCType] autorelease];
}
+ (instancetype)valueWithPointer: (const void *)pointer
{
return [[[self alloc] initWithPointer: pointer] autorelease];
}
+ (instancetype)valueWithNonretainedObject: (id)object
{
return [[[self alloc] initWithNonretainedObject: object] autorelease];
}
- (instancetype)initWithBytes: (const void *)bytes
objCType: (const char *)objCType
{
OF_INVALID_INIT_METHOD
}
- (instancetype)initWithPointer: (const void *)pointer
{
OF_INVALID_INIT_METHOD
}
- (instancetype)initWithNonretainedObject: (id)object
{
OF_INVALID_INIT_METHOD
}
- (bool)isEqual: (id)object
{
const char *objCType;
size_t size;
void *buffer, *otherBuffer;
if (![object isKindOfClass: [OFValue class]])
return false;
objCType = [self objCType];
if (strcmp([object objCType], objCType) != 0)
return false;
size = of_sizeof_type_encoding(objCType);
if ((buffer = malloc(size)) == NULL)
@throw [OFOutOfMemoryException
exceptionWithRequestedSize: size];
if ((otherBuffer = malloc(size)) == NULL)
@throw [OFOutOfMemoryException
exceptionWithRequestedSize: size];
@try {
[self getValue: buffer
size: size];
[object getValue: otherBuffer
size: size];
return (memcmp(buffer, otherBuffer, size) == 0);
} @finally {
free(buffer);
free(otherBuffer);
}
}
- (uint32_t)hash
{
uint32_t hash;
size_t size;
char *buffer;
size = of_sizeof_type_encoding([self objCType]);
if ((buffer = malloc(size)) == NULL)
@throw [OFOutOfMemoryException
exceptionWithRequestedSize: size];
[self getValue: buffer
size: size];
@try {
OF_HASH_INIT(hash);
for (size_t i = 0; i < size; i++)
OF_HASH_ADD(hash, buffer[i]);
OF_HASH_FINALIZE(hash);
} @finally {
free(buffer);
}
return hash;
}
- (id)copy
{
return [self retain];
}
- (const char *)objCType
{
OF_UNRECOGNIZED_SELECTOR
}
- (void)getValue: (void *)value
size: (size_t)size
{
OF_UNRECOGNIZED_SELECTOR
}
- (void *)pointerValue
{
void *ret;
[self getValue: &ret
size: sizeof(ret)];
return ret;
}
- (id)nonretainedObjectValue
{
id ret;
[self getValue: &ret
size: sizeof(ret)];
return ret;
}
@end