ObjFW  Artifact [6960976b0a]

Artifact 6960976b0a1d551a2f227a72dbc6853f9d7288a038f41e9551980cbe2c5c38ad:

• File src/OFNumber.m — part of check-in [48980f2297] at 2015-11-29 11:43:05 on branch trunk — Make properties a requirement and clean up code

  This increases the required GCC version from 4.0 to 4.6 (exception:
  Apple GCC, which already supports this with >= 4.0 starting with OS X
  10.5). Since even GCC 4.6 is really old by now, there is no point in
  still supporting something even older and making the code ugly because
  of that. While some hardware and OS support was dropped from GCC 4.6
  compared to GCC 4.0, there is nothing in there that would be an
  interesting target with the exception of BeOS maybe - but a port to BeOS
  can also be achieved using the Haiku support. The other dropped OSes are
  mostly old versions of OSes while newer ones are still being supported
  (and those newer versions of those OSes still support the same
  hardware). (user: js, size: 23785) [annotate] [blame] [check-ins using]

/*
 * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015
 *   Jonathan Schleifer <js@webkeks.org>
 *
 * 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"

#include <math.h>

#import "OFNumber.h"
#import "OFString.h"
#import "OFXMLElement.h"
#import "OFXMLAttribute.h"
#import "OFDataArray.h"

#import "OFInvalidArgumentException.h"
#import "OFInvalidFormatException.h"
#import "OFOutOfRangeException.h"

#define RETURN_AS(t)							\
	switch (_type) {						\
	case OF_NUMBER_TYPE_BOOL:					\
		return (t)_value.bool_;					\
	case OF_NUMBER_TYPE_CHAR:					\
		return (t)_value.schar;					\
	case OF_NUMBER_TYPE_SHORT:					\
		return (t)_value.sshort;				\
	case OF_NUMBER_TYPE_INT:					\
		return (t)_value.sint;					\
	case OF_NUMBER_TYPE_LONG:					\
		return (t)_value.slong;					\
	case OF_NUMBER_TYPE_LONGLONG:					\
		return (t)_value.slonglong;				\
	case OF_NUMBER_TYPE_UCHAR:					\
		return (t)_value.uchar;					\
	case OF_NUMBER_TYPE_USHORT:					\
		return (t)_value.ushort;				\
	case OF_NUMBER_TYPE_UINT:					\
		return (t)_value.uint;					\
	case OF_NUMBER_TYPE_ULONG:					\
		return (t)_value.ulong;					\
	case OF_NUMBER_TYPE_ULONGLONG:					\
		return (t)_value.ulonglong;				\
	case OF_NUMBER_TYPE_INT8:					\
		return (t)_value.int8;					\
	case OF_NUMBER_TYPE_INT16:					\
		return (t)_value.int16;					\
	case OF_NUMBER_TYPE_INT32:					\
		return (t)_value.int32;					\
	case OF_NUMBER_TYPE_INT64:					\
		return (t)_value.int64;					\
	case OF_NUMBER_TYPE_UINT8:					\
		return (t)_value.uint8;					\
	case OF_NUMBER_TYPE_UINT16:					\
		return (t)_value.uint16;				\
	case OF_NUMBER_TYPE_UINT32:					\
		return (t)_value.uint32;				\
	case OF_NUMBER_TYPE_UINT64:					\
		return (t)_value.uint64;				\
	case OF_NUMBER_TYPE_SIZE:					\
		return (t)_value.size;					\
	case OF_NUMBER_TYPE_SSIZE:					\
		return (t)_value.ssize;					\
	case OF_NUMBER_TYPE_INTMAX:					\
		return (t)_value.intmax;				\
	case OF_NUMBER_TYPE_UINTMAX:					\
		return (t)_value.uintmax;				\
	case OF_NUMBER_TYPE_PTRDIFF:					\
		return (t)_value.ptrdiff;				\
	case OF_NUMBER_TYPE_INTPTR:					\
		return (t)_value.intptr;				\
	case OF_NUMBER_TYPE_UINTPTR:					\
		return (t)_value.uintptr;				\
	case OF_NUMBER_TYPE_FLOAT:					\
		return (t)_value.float_;				\
	case OF_NUMBER_TYPE_DOUBLE:					\
		return (t)_value.double_;				\
	default:							\
		@throw [OFInvalidFormatException exception];		\
	}

@interface OFNumber (OF_PRIVATE_CATEGORY)
- (OFString*)OF_JSONRepresentationWithOptions: (int)options
					depth: (size_t)depth;
@end

@implementation OFNumber
@synthesize type = _type;

+ (instancetype)numberWithBool: (bool)bool_
{
	return [[[self alloc] initWithBool: bool_] autorelease];
}

+ (instancetype)numberWithChar: (signed char)schar
{
	return [[[self alloc] initWithChar: schar] autorelease];
}

+ (instancetype)numberWithShort: (signed short)sshort
{
	return [[[self alloc] initWithShort: sshort] autorelease];
}

+ (instancetype)numberWithInt: (signed int)sint
{
	return [[[self alloc] initWithInt: sint] autorelease];
}

+ (instancetype)numberWithLong: (signed long)slong
{
	return [[[self alloc] initWithLong: slong] autorelease];
}

+ (instancetype)numberWithLongLong: (signed long long)slonglong
{
	return [[[self alloc] initWithLongLong: slonglong] autorelease];
}

+ (instancetype)numberWithUnsignedChar: (unsigned char)uchar
{
	return [[[self alloc] initWithUnsignedChar: uchar] autorelease];
}

+ (instancetype)numberWithUnsignedShort: (unsigned short)ushort
{
	return [[[self alloc] initWithUnsignedShort: ushort] autorelease];
}

+ (instancetype)numberWithUnsignedInt: (unsigned int)uint
{
	return [[[self alloc] initWithUnsignedInt: uint] autorelease];
}

+ (instancetype)numberWithUnsignedLong: (unsigned long)ulong
{
	return [[[self alloc] initWithUnsignedLong: ulong] autorelease];
}

+ (instancetype)numberWithUnsignedLongLong: (unsigned long long)ulonglong
{
	return [[[self alloc] initWithUnsignedLongLong: ulonglong] autorelease];
}

+ (instancetype)numberWithInt8: (int8_t)int8
{
	return [[[self alloc] initWithInt8: int8] autorelease];
}

+ (instancetype)numberWithInt16: (int16_t)int16
{
	return [[[self alloc] initWithInt16: int16] autorelease];
}

+ (instancetype)numberWithInt32: (int32_t)int32
{
	return [[[self alloc] initWithInt32: int32] autorelease];
}

+ (instancetype)numberWithInt64: (int64_t)int64
{
	return [[[self alloc] initWithInt64: int64] autorelease];
}

+ (instancetype)numberWithUInt8: (uint8_t)uint8
{
	return [[[self alloc] initWithUInt8: uint8] autorelease];
}

+ (instancetype)numberWithUInt16: (uint16_t)uint16
{
	return [[[self alloc] initWithUInt16: uint16] autorelease];
}

+ (instancetype)numberWithUInt32: (uint32_t)uint32
{
	return [[[self alloc] initWithUInt32: uint32] autorelease];
}

+ (instancetype)numberWithUInt64: (uint64_t)uint64
{
	return [[[self alloc] initWithUInt64: uint64] autorelease];
}

+ (instancetype)numberWithSize: (size_t)size
{
	return [[[self alloc] initWithSize: size] autorelease];
}

+ (instancetype)numberWithSSize: (ssize_t)ssize
{
	return [[[self alloc] initWithSSize: ssize] autorelease];
}

+ (instancetype)numberWithIntMax: (intmax_t)intmax
{
	return [[[self alloc] initWithIntMax: intmax] autorelease];
}

+ (instancetype)numberWithUIntMax: (uintmax_t)uintmax
{
	return [[[self alloc] initWithUIntMax: uintmax] autorelease];
}

+ (instancetype)numberWithPtrDiff: (ptrdiff_t)ptrdiff
{
	return [[[self alloc] initWithPtrDiff: ptrdiff] autorelease];
}

+ (instancetype)numberWithIntPtr: (intptr_t)intptr
{
	return [[[self alloc] initWithIntPtr: intptr] autorelease];
}

+ (instancetype)numberWithUIntPtr: (uintptr_t)uintptr
{
	return [[[self alloc] initWithUIntPtr: uintptr] autorelease];
}

+ (instancetype)numberWithFloat: (float)float_
{
	return [[[self alloc] initWithFloat: float_] autorelease];
}

+ (instancetype)numberWithDouble: (double)double_
{
	return [[[self alloc] initWithDouble: double_] autorelease];
}

- init
{
	OF_INVALID_INIT_METHOD
}

- initWithBool: (bool)bool_
{
	self = [super init];

	_value.bool_ = bool_;
	_type = OF_NUMBER_TYPE_BOOL;

	return self;
}

- initWithChar: (signed char)schar
{
	self = [super init];

	_value.schar = schar;
	_type = OF_NUMBER_TYPE_CHAR;

	return self;
}

- initWithShort: (signed short)sshort
{
	self = [super init];

	_value.sshort = sshort;
	_type = OF_NUMBER_TYPE_SHORT;

	return self;
}

- initWithInt: (signed int)sint
{
	self = [super init];

	_value.sint = sint;
	_type = OF_NUMBER_TYPE_INT;

	return self;
}

- initWithLong: (signed long)slong
{
	self = [super init];

	_value.slong = slong;
	_type = OF_NUMBER_TYPE_LONG;

	return self;
}

- initWithLongLong: (signed long long)slonglong
{
	self = [super init];

	_value.slonglong = slonglong;
	_type = OF_NUMBER_TYPE_LONGLONG;

	return self;
}

- initWithUnsignedChar: (unsigned char)uchar
{
	self = [super init];

	_value.uchar = uchar;
	_type = OF_NUMBER_TYPE_UCHAR;

	return self;
}

- initWithUnsignedShort: (unsigned short)ushort
{
	self = [super init];

	_value.ushort = ushort;
	_type = OF_NUMBER_TYPE_USHORT;

	return self;
}

- initWithUnsignedInt: (unsigned int)uint
{
	self = [super init];

	_value.uint = uint;
	_type = OF_NUMBER_TYPE_UINT;

	return self;
}

- initWithUnsignedLong: (unsigned long)ulong
{
	self = [super init];

	_value.ulong = ulong;
	_type = OF_NUMBER_TYPE_ULONG;

	return self;
}

- initWithUnsignedLongLong: (unsigned long long)ulonglong
{
	self = [super init];

	_value.ulonglong = ulonglong;
	_type = OF_NUMBER_TYPE_ULONGLONG;

	return self;
}

- initWithInt8: (int8_t)int8
{
	self = [super init];

	_value.int8 = int8;
	_type = OF_NUMBER_TYPE_INT8;

	return self;
}

- initWithInt16: (int16_t)int16
{
	self = [super init];

	_value.int16 = int16;
	_type = OF_NUMBER_TYPE_INT16;

	return self;
}

- initWithInt32: (int32_t)int32
{
	self = [super init];

	_value.int32 = int32;
	_type = OF_NUMBER_TYPE_INT32;

	return self;
}

- initWithInt64: (int64_t)int64
{
	self = [super init];

	_value.int64 = int64;
	_type = OF_NUMBER_TYPE_INT64;

	return self;
}

- initWithUInt8: (uint8_t)uint8
{
	self = [super init];

	_value.uint8 = uint8;
	_type = OF_NUMBER_TYPE_UINT8;

	return self;
}

- initWithUInt16: (uint16_t)uint16
{
	self = [super init];

	_value.uint16 = uint16;
	_type = OF_NUMBER_TYPE_UINT16;

	return self;
}

- initWithUInt32: (uint32_t)uint32
{
	self = [super init];

	_value.uint32 = uint32;
	_type = OF_NUMBER_TYPE_UINT32;

	return self;
}

- initWithUInt64: (uint64_t)uint64
{
	self = [super init];

	_value.uint64 = uint64;
	_type = OF_NUMBER_TYPE_UINT64;

	return self;
}

- initWithSize: (size_t)size
{
	self = [super init];

	_value.size = size;
	_type = OF_NUMBER_TYPE_SIZE;

	return self;
}

- initWithSSize: (ssize_t)ssize
{
	self = [super init];

	_value.ssize = ssize;
	_type = OF_NUMBER_TYPE_SSIZE;

	return self;
}

- initWithIntMax: (intmax_t)intmax
{
	self = [super init];

	_value.intmax = intmax;
	_type = OF_NUMBER_TYPE_INTMAX;

	return self;
}

- initWithUIntMax: (uintmax_t)uintmax
{
	self = [super init];

	_value.uintmax = uintmax;
	_type = OF_NUMBER_TYPE_UINTMAX;

	return self;
}

- initWithPtrDiff: (ptrdiff_t)ptrdiff
{
	self = [super init];

	_value.ptrdiff = ptrdiff;
	_type = OF_NUMBER_TYPE_PTRDIFF;

	return self;
}

- initWithIntPtr: (intptr_t)intptr
{
	self = [super init];

	_value.intptr = intptr;
	_type = OF_NUMBER_TYPE_INTPTR;

	return self;
}

- initWithUIntPtr: (uintptr_t)uintptr
{
	self = [super init];

	_value.uintptr = uintptr;
	_type = OF_NUMBER_TYPE_UINTPTR;

	return self;
}

- initWithFloat: (float)float_
{
	self = [super init];

	_value.float_ = float_;
	_type = OF_NUMBER_TYPE_FLOAT;

	return self;
}

- initWithDouble: (double)double_
{
	self = [super init];

	_value.double_ = double_;
	_type = OF_NUMBER_TYPE_DOUBLE;

	return self;
}

- initWithSerialization: (OFXMLElement*)element
{
	self = [super init];

	@try {
		void *pool = objc_autoreleasePoolPush();
		OFString *typeString;

		if (![[element name] isEqual: [self className]] ||
		    ![[element namespace] isEqual: OF_SERIALIZATION_NS])
			@throw [OFInvalidArgumentException exception];

		typeString = [[element attributeForName: @"type"] stringValue];

		if ([typeString isEqual: @"boolean"]) {
			_type = OF_NUMBER_TYPE_BOOL;

			if ([[element stringValue] isEqual: @"true"])
				_value.bool_ = true;
			else if ([[element stringValue] isEqual: @"false"])
				_value.bool_ = false;
			else
				@throw [OFInvalidArgumentException exception];
		} else if ([typeString isEqual: @"unsigned"]) {
			/*
			 * FIXME: This will fail if the value is bigger than
			 *	  INTMAX_MAX!
			 */
			_type = OF_NUMBER_TYPE_UINTMAX;
			_value.uintmax = [element decimalValue];
		} else if ([typeString isEqual: @"signed"]) {
			_type = OF_NUMBER_TYPE_INTMAX;
			_value.intmax = [element decimalValue];
		} else if ([typeString isEqual: @"float"]) {
			union {
				float f;
				uint32_t u;
			} f;

			f.u = (uint32_t)[element hexadecimalValue];

			_type = OF_NUMBER_TYPE_FLOAT;
			_value.float_ = f.f;
		} else if ([typeString isEqual: @"double"]) {
			union {
				double d;
				uint64_t u;
			} d;

			d.u = (uint64_t)[element hexadecimalValue];

			_type = OF_NUMBER_TYPE_DOUBLE;
			_value.double_ = d.d;
		} else
			@throw [OFInvalidArgumentException exception];

		objc_autoreleasePoolPop(pool);
	} @catch (id e) {
		[self release];
		@throw e;
	}

	return self;
}

- (bool)boolValue
{
	RETURN_AS(bool)
}

- (signed char)charValue
{
	RETURN_AS(signed char)
}

- (signed short)shortValue
{
	RETURN_AS(signed short)
}

- (signed int)intValue
{
	RETURN_AS(signed int)
}

- (signed long)longValue
{
	RETURN_AS(signed long)
}

- (signed long long)longLongValue
{
	RETURN_AS(signed long long)
}

- (unsigned char)unsignedCharValue
{
	RETURN_AS(unsigned char)
}

- (unsigned short)unsignedShortValue
{
	RETURN_AS(unsigned short)
}

- (unsigned int)unsignedIntValue
{
	RETURN_AS(unsigned int)
}

- (unsigned long)unsignedLongValue
{
	RETURN_AS(unsigned long)
}

- (unsigned long long)unsignedLongLongValue
{
	RETURN_AS(unsigned long long)
}

- (int8_t)int8Value
{
	RETURN_AS(int8_t)
}

- (int16_t)int16Value
{
	RETURN_AS(int16_t)
}

- (int32_t)int32Value
{
	RETURN_AS(int32_t)
}

- (int64_t)int64Value
{
	RETURN_AS(int64_t)
}

- (uint8_t)uInt8Value
{
	RETURN_AS(uint8_t)
}

- (uint16_t)uInt16Value
{
	RETURN_AS(uint16_t)
}

- (uint32_t)uInt32Value
{
	RETURN_AS(uint32_t)
}

- (uint64_t)uInt64Value
{
	RETURN_AS(uint64_t)
}

- (size_t)sizeValue
{
	RETURN_AS(size_t)
}

- (ssize_t)sSizeValue
{
	RETURN_AS(ssize_t)
}

- (intmax_t)intMaxValue
{
	RETURN_AS(intmax_t)
}

- (uintmax_t)uIntMaxValue
{
	RETURN_AS(uintmax_t)
}

- (ptrdiff_t)ptrDiffValue
{
	RETURN_AS(ptrdiff_t)
}

- (intptr_t)intPtrValue
{
	RETURN_AS(intptr_t)
}

- (uintptr_t)uIntPtrValue
{
	RETURN_AS(uintptr_t)
}

- (float)floatValue
{
	RETURN_AS(float)
}

- (double)doubleValue
{
	RETURN_AS(double)
}

- (bool)isEqual: (id)object
{
	OFNumber *number;

	if (![object isKindOfClass: [OFNumber class]])
		return false;

	number = object;

	if (_type & OF_NUMBER_TYPE_FLOAT ||
	    number->_type & OF_NUMBER_TYPE_FLOAT) {
		double value1 = [number doubleValue];
		double value2 = [self doubleValue];

		if (isnan(value1) && isnan(value2))
			return true;
		if (isnan(value1) || isnan(value2))
			return false;

		return (value1 == value2);
	}

	if (_type & OF_NUMBER_TYPE_SIGNED ||
	    number->_type & OF_NUMBER_TYPE_SIGNED)
		return ([number intMaxValue] == [self intMaxValue]);

	return ([number uIntMaxValue] == [self uIntMaxValue]);
}

- (of_comparison_result_t)compare: (id <OFComparing>)object
{
	OFNumber *number;

	if (![object isKindOfClass: [OFNumber class]])
		@throw [OFInvalidArgumentException exception];

	number = (OFNumber*)object;

	if (_type & OF_NUMBER_TYPE_FLOAT ||
	    number->_type & OF_NUMBER_TYPE_FLOAT) {
		double double1 = [self doubleValue];
		double double2 = [number doubleValue];

		if (double1 > double2)
			return OF_ORDERED_DESCENDING;
		if (double1 < double2)
			return OF_ORDERED_ASCENDING;

		return OF_ORDERED_SAME;
	} else if (_type & OF_NUMBER_TYPE_SIGNED ||
	    number->_type & OF_NUMBER_TYPE_SIGNED) {
		intmax_t int1 = [self intMaxValue];
		intmax_t int2 = [number intMaxValue];

		if (int1 > int2)
			return OF_ORDERED_DESCENDING;
		if (int1 < int2)
			return OF_ORDERED_ASCENDING;

		return OF_ORDERED_SAME;
	} else {
		uintmax_t uint1 = [self uIntMaxValue];
		uintmax_t uint2 = [number uIntMaxValue];

		if (uint1 > uint2)
			return OF_ORDERED_DESCENDING;
		if (uint1 < uint2)
			return OF_ORDERED_ASCENDING;

		return OF_ORDERED_SAME;
	}
}

- (uint32_t)hash
{
	of_number_type_t type = _type;
	uint32_t hash;

	/* Do we really need signed to represent this number? */
	if (type & OF_NUMBER_TYPE_SIGNED && [self intMaxValue] >= 0)
		type &= ~OF_NUMBER_TYPE_SIGNED;

	/* Do we really need floating point to represent this number? */
	if (type & OF_NUMBER_TYPE_FLOAT) {
		double v = [self doubleValue];

		if (v < 0) {
			if (v == [self intMaxValue]) {
				type &= ~OF_NUMBER_TYPE_FLOAT;
				type |= OF_NUMBER_TYPE_SIGNED;
			}
		} else {
			if (v == [self uIntMaxValue])
				type &= ~OF_NUMBER_TYPE_FLOAT;
		}
	}

	OF_HASH_INIT(hash);

	if (type & OF_NUMBER_TYPE_FLOAT) {
		union {
			double d;
			uint8_t b[sizeof(double)];
		} d;
		uint_fast8_t i;

		if (isnan([self doubleValue]))
			return 0;

		d.d = OF_BSWAP_DOUBLE_IF_BE([self doubleValue]);

		for (i = 0; i < sizeof(double); i++)
			OF_HASH_ADD(hash, d.b[i]);
	} else if (type & OF_NUMBER_TYPE_SIGNED) {
		intmax_t v = [self intMaxValue] * -1;

		while (v != 0) {
			OF_HASH_ADD(hash, v & 0xFF);
			v >>= 8;
		}

		OF_HASH_ADD(hash, 1);
	} else {
		uintmax_t v = [self uIntMaxValue];

		while (v != 0) {
			OF_HASH_ADD(hash, v & 0xFF);
			v >>= 8;
		}
	}

	OF_HASH_FINALIZE(hash);

	return hash;
}

- copy
{
	return [self retain];
}

- (OFString*)description
{
	OFMutableString *ret;

	switch (_type) {
	case OF_NUMBER_TYPE_BOOL:
		return (_value.bool_ ? @"true" : @"false");
	case OF_NUMBER_TYPE_UCHAR:
	case OF_NUMBER_TYPE_USHORT:
	case OF_NUMBER_TYPE_UINT:
	case OF_NUMBER_TYPE_ULONG:
	case OF_NUMBER_TYPE_ULONGLONG:
	case OF_NUMBER_TYPE_UINT8:
	case OF_NUMBER_TYPE_UINT16:
	case OF_NUMBER_TYPE_UINT32:
	case OF_NUMBER_TYPE_UINT64:
	case OF_NUMBER_TYPE_SIZE:
	case OF_NUMBER_TYPE_UINTMAX:
	case OF_NUMBER_TYPE_UINTPTR:
		return [OFString stringWithFormat: @"%ju", [self uIntMaxValue]];
	case OF_NUMBER_TYPE_CHAR:
	case OF_NUMBER_TYPE_SHORT:
	case OF_NUMBER_TYPE_INT:
	case OF_NUMBER_TYPE_LONG:
	case OF_NUMBER_TYPE_LONGLONG:
	case OF_NUMBER_TYPE_INT8:
	case OF_NUMBER_TYPE_INT16:
	case OF_NUMBER_TYPE_INT32:
	case OF_NUMBER_TYPE_INT64:
	case OF_NUMBER_TYPE_SSIZE:
	case OF_NUMBER_TYPE_INTMAX:
	case OF_NUMBER_TYPE_PTRDIFF:
	case OF_NUMBER_TYPE_INTPTR:
		return [OFString stringWithFormat: @"%jd", [self intMaxValue]];
	case OF_NUMBER_TYPE_FLOAT:
		ret = [OFMutableString stringWithFormat: @"%g", _value.float_];

		if (![ret containsString: @"."])
			[ret appendString: @".0"];

		[ret makeImmutable];

		return ret;
	case OF_NUMBER_TYPE_DOUBLE:
		ret = [OFMutableString stringWithFormat: @"%g",
							 _value.double_];

		if (![ret containsString: @"."])
			[ret appendString: @".0"];

		[ret makeImmutable];

		return ret;
	default:
		@throw [OFInvalidFormatException exception];
	}
}

- (OFXMLElement*)XMLElementBySerializing
{
	void *pool = objc_autoreleasePoolPush();
	OFXMLElement *element;

	element = [OFXMLElement elementWithName: [self className]
				      namespace: OF_SERIALIZATION_NS
				    stringValue: [self description]];

	switch (_type) {
	case OF_NUMBER_TYPE_BOOL:
		[element addAttributeWithName: @"type"
				  stringValue: @"boolean"];
		break;
	case OF_NUMBER_TYPE_UCHAR:
	case OF_NUMBER_TYPE_USHORT:
	case OF_NUMBER_TYPE_UINT:
	case OF_NUMBER_TYPE_ULONG:
	case OF_NUMBER_TYPE_ULONGLONG:
	case OF_NUMBER_TYPE_UINT8:
	case OF_NUMBER_TYPE_UINT16:
	case OF_NUMBER_TYPE_UINT32:
	case OF_NUMBER_TYPE_UINT64:
	case OF_NUMBER_TYPE_SIZE:
	case OF_NUMBER_TYPE_UINTMAX:
	case OF_NUMBER_TYPE_UINTPTR:
		[element addAttributeWithName: @"type"
				  stringValue: @"unsigned"];
		break;
	case OF_NUMBER_TYPE_CHAR:
	case OF_NUMBER_TYPE_SHORT:
	case OF_NUMBER_TYPE_INT:
	case OF_NUMBER_TYPE_LONG:
	case OF_NUMBER_TYPE_LONGLONG:
	case OF_NUMBER_TYPE_INT8:
	case OF_NUMBER_TYPE_INT16:
	case OF_NUMBER_TYPE_INT32:
	case OF_NUMBER_TYPE_INT64:
	case OF_NUMBER_TYPE_SSIZE:
	case OF_NUMBER_TYPE_INTMAX:
	case OF_NUMBER_TYPE_PTRDIFF:
	case OF_NUMBER_TYPE_INTPTR:;
		[element addAttributeWithName: @"type"
				  stringValue: @"signed"];
		break;
	case OF_NUMBER_TYPE_FLOAT:;
		union {
			float f;
			uint32_t u;
		} f;

		f.f = _value.float_;

		[element addAttributeWithName: @"type"
				  stringValue: @"float"];
		[element setStringValue:
		    [OFString stringWithFormat: @"%08" PRIx32, f.u]];

		break;
	case OF_NUMBER_TYPE_DOUBLE:;
		union {
			double d;
			uint64_t u;
		} d;

		d.d = _value.double_;

		[element addAttributeWithName: @"type"
				  stringValue: @"double"];
		[element setStringValue:
		    [OFString stringWithFormat: @"%016" PRIx64, d.u]];

		break;
	default:
		@throw [OFInvalidFormatException exception];
	}

	[element retain];

	objc_autoreleasePoolPop(pool);

	return [element autorelease];
}

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

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

- (OFString*)OF_JSONRepresentationWithOptions: (int)options
					depth: (size_t)depth
{
	double doubleValue;

	if (_type == OF_NUMBER_TYPE_BOOL)
		return (_value.bool_ ? @"true" : @"false");

	doubleValue = [self doubleValue];
	if (isinf(doubleValue)) {
		if (options & OF_JSON_REPRESENTATION_JSON5) {
			if (doubleValue > 0)
				return @"Infinity";
			else
				return @"-Infinity";
		} else
			@throw [OFInvalidArgumentException exception];
	}

	return [self description];
}

- (OFDataArray*)messagePackRepresentation
{
	OFDataArray *data;

	if (_type == OF_NUMBER_TYPE_BOOL) {
		uint8_t type;

		data = [OFDataArray dataArrayWithItemSize: 1
						 capacity: 1];

		if (_value.bool_)
			type = 0xC3;
		else
			type = 0xC2;

		[data addItem: &type];
	} else if (_type == OF_NUMBER_TYPE_FLOAT) {
		uint8_t type = 0xCA;
		float tmp = OF_BSWAP_FLOAT_IF_LE(_value.float_);

		data = [OFDataArray dataArrayWithItemSize: 1
						 capacity: 5];

		[data addItem: &type];
		[data addItems: &tmp
			 count: sizeof(tmp)];
	} else if (_type == OF_NUMBER_TYPE_DOUBLE) {
		uint8_t type = 0xCB;
		double tmp = OF_BSWAP_DOUBLE_IF_LE(_value.double_);

		data = [OFDataArray dataArrayWithItemSize: 1
						 capacity: 9];

		[data addItem: &type];
		[data addItems: &tmp
			 count: sizeof(tmp)];
	} else if (_type & OF_NUMBER_TYPE_SIGNED) {
		intmax_t value = [self intMaxValue];

		if (value >= -32 && value < 0) {
			uint8_t tmp = 0xE0 | ((uint8_t)(value - 32) & 0x1F);

			data = [OFDataArray dataArrayWithItemSize: 1
							 capacity: 1];

			[data addItem: &tmp];
		} else if (value >= INT8_MIN && value <= INT8_MAX) {
			uint8_t type = 0xD0;
			int8_t tmp = (int8_t)value;

			data = [OFDataArray dataArrayWithItemSize: 1
							 capacity: 2];

			[data addItem: &type];
			[data addItem: &tmp];
		} else if (value >= INT16_MIN && value <= INT16_MAX) {
			uint8_t type = 0xD1;
			int16_t tmp = OF_BSWAP16_IF_LE((int16_t)value);

			data = [OFDataArray dataArrayWithItemSize: 1
							 capacity: 3];

			[data addItem: &type];
			[data addItems: &tmp
				 count: sizeof(tmp)];
		} else if (value >= INT32_MIN && value <= INT32_MAX) {
			uint8_t type = 0xD2;
			int32_t tmp = OF_BSWAP32_IF_LE((int32_t)value);

			data = [OFDataArray dataArrayWithItemSize: 1
							 capacity: 5];

			[data addItem: &type];
			[data addItems: &tmp
				 count: sizeof(tmp)];
		} else if (value >= INT64_MIN && value <= INT64_MAX) {
			uint8_t type = 0xD3;
			int64_t tmp = OF_BSWAP64_IF_LE((int64_t)value);

			data = [OFDataArray dataArrayWithItemSize: 1
							 capacity: 9];

			[data addItem: &type];
			[data addItems: &tmp
				 count: sizeof(tmp)];
		} else
			@throw [OFOutOfRangeException exception];
	} else {
		uintmax_t value = [self uIntMaxValue];

		if (value <= 127) {
			uint8_t tmp = ((uint8_t)value & 0x7F);

			data = [OFDataArray dataArrayWithItemSize: 1
							 capacity: 1];

			[data addItem: &tmp];
		} else if (value <= UINT8_MAX) {
			uint8_t type = 0xCC;
			uint8_t tmp = (uint8_t)value;

			data = [OFDataArray dataArrayWithItemSize: 1
							 capacity: 2];

			[data addItem: &type];
			[data addItem: &tmp];
		} else if (value <= UINT16_MAX) {
			uint8_t type = 0xCD;
			uint16_t tmp = OF_BSWAP16_IF_LE((uint16_t)value);

			data = [OFDataArray dataArrayWithItemSize: 1
							 capacity: 3];

			[data addItem: &type];
			[data addItems: &tmp
				 count: sizeof(tmp)];
		} else if (value <= UINT32_MAX) {
			uint8_t type = 0xCE;
			uint32_t tmp = OF_BSWAP32_IF_LE((uint32_t)value);

			data = [OFDataArray dataArrayWithItemSize: 1
							 capacity: 5];

			[data addItem: &type];
			[data addItems: &tmp
				 count: sizeof(tmp)];
		} else if (value <= UINT64_MAX) {
			uint8_t type = 0xCF;
			uint64_t tmp = OF_BSWAP64_IF_LE((uint64_t)value);

			data = [OFDataArray dataArrayWithItemSize: 1
							 capacity: 9];

			[data addItem: &type];
			[data addItems: &tmp
				 count: sizeof(tmp)];
		} else
			@throw [OFOutOfRangeException exception];
	}

	return data;
}
@end