/*
* 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 "OFValue.h"
#import "OFBytesValue.h"
#import "OFDimensionValue.h"
#import "OFMethodSignature.h"
#import "OFNonretainedObjectValue.h"
#import "OFPointValue.h"
#import "OFPointerValue.h"
#import "OFRangeValue.h"
#import "OFRectangleValue.h"
#import "OFString.h"
#import "OFOutOfMemoryException.h"
static struct {
Class isa;
} placeholder;
@interface OFValuePlaceholder: OFValue
@end
@implementation OFValuePlaceholder
- (instancetype)initWithBytes: (const void *)bytes
objCType: (const char *)objCType
{
return (id)[[OFBytesValue alloc] initWithBytes: bytes
objCType: objCType];
}
- (instancetype)initWithPointer: (const void *)pointer
{
return (id)[[OFPointerValue alloc] initWithPointer: pointer];
}
- (instancetype)initWithNonretainedObject: (id)object
{
return (id)[[OFNonretainedObjectValue alloc]
initWithNonretainedObject: object];
}
- (instancetype)initWithRange: (of_range_t)range
{
return (id)[[OFRangeValue alloc] initWithRange: range];
}
- (instancetype)initWithPoint: (of_point_t)point
{
return (id)[[OFPointValue alloc] initWithPoint: point];
}
- (instancetype)initWithDimension: (of_dimension_t)dimension
{
return (id)[[OFDimensionValue alloc] initWithDimension: dimension];
}
- (instancetype)initWithRectangle: (of_rectangle_t)rectangle
{
return (id)[[OFRectangleValue alloc] initWithRectangle: rectangle];
}
@end
@implementation OFValue
+ (void)initialize
{
if (self == [OFValue class])
placeholder.isa = [OFValuePlaceholder 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)valueWithRange: (of_range_t)range
{
return [[[self alloc] initWithRange: range] autorelease];
}
+ (instancetype)valueWithPoint: (of_point_t)point
{
return [[[self alloc] initWithPoint: point] autorelease];
}
+ (instancetype)valueWithDimension: (of_dimension_t)dimension
{
return [[[self alloc] initWithDimension: dimension] autorelease];
}
+ (instancetype)valueWithRectangle: (of_rectangle_t)rectangle
{
return [[[self alloc] initWithRectangle: rectangle] 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
}
- (instancetype)initWithRange: (of_range_t)range
{
OF_INVALID_INIT_METHOD
}
- (instancetype)initWithPoint: (of_point_t)point
{
OF_INVALID_INIT_METHOD
}
- (instancetype)initWithDimension: (of_dimension_t)dimension
{
OF_INVALID_INIT_METHOD
}
- (instancetype)initWithRectangle: (of_rectangle_t)rectangle
{
OF_INVALID_INIT_METHOD
}
- (bool)isEqual: (id)object
{
const char *objCType;
size_t size;
void *value, *otherValue;
if (object == self)
return true;
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 ((value = malloc(size)) == NULL)
@throw [OFOutOfMemoryException
exceptionWithRequestedSize: size];
if ((otherValue = malloc(size)) == NULL) {
free(value);
@throw [OFOutOfMemoryException
exceptionWithRequestedSize: size];
}
@try {
[self getValue: value
size: size];
[object getValue: otherValue
size: size];
return (memcmp(value, otherValue, size) == 0);
} @finally {
free(value);
free(otherValue);
}
}
- (uint32_t)hash
{
size_t size = of_sizeof_type_encoding(self.objCType);
unsigned char *value;
uint32_t hash;
if ((value = malloc(size)) == NULL)
@throw [OFOutOfMemoryException
exceptionWithRequestedSize: size];
@try {
[self getValue: value
size: size];
OF_HASH_INIT(hash);
for (size_t i = 0; i < size; i++)
OF_HASH_ADD(hash, value[i]);
OF_HASH_FINALIZE(hash);
} @finally {
free(value);
}
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;
}
- (of_range_t)rangeValue
{
of_range_t ret;
[self getValue: &ret
size: sizeof(ret)];
return ret;
}
- (of_point_t)pointValue
{
of_point_t ret;
[self getValue: &ret
size: sizeof(ret)];
return ret;
}
- (of_dimension_t)dimensionValue
{
of_dimension_t ret;
[self getValue: &ret
size: sizeof(ret)];
return ret;
}
- (of_rectangle_t)rectangleValue
{
of_rectangle_t ret;
[self getValue: &ret
size: sizeof(ret)];
return ret;
}
- (OFString *)description
{
OFMutableString *ret =
[OFMutableString stringWithString: @"<OFValue: "];
size_t size = of_sizeof_type_encoding(self.objCType);
unsigned char *value;
if ((value = malloc(size)) == NULL)
@throw [OFOutOfMemoryException
exceptionWithRequestedSize: size];
@try {
[self getValue: value
size: size];
for (size_t i = 0; i < size; i++) {
if (i > 0)
[ret appendString: @" "];
[ret appendFormat: @"%02x", value[i]];
}
} @finally {
free(value);
}
[ret appendString: @">"];
[ret makeImmutable];
return ret;
}
@end