/*
* 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 "OFObject.h"
OF_ASSUME_NONNULL_BEGIN
/*!
* @class OFValue OFValue.h ObjFW/OFValue.h
*
* @brief A class for storing arbitrary values in an object.
*/
@interface OFValue: OFObject
/*!
* @brief The ObjC type encoding of the value.
*/
@property (readonly, nonatomic) const char *objCType;
/*!
* @brief The value as a pointer to void.
*
* If the value is not pointer-sized, @ref OFInvalidFormatException is thrown.
*/
@property (readonly, nonatomic) void *pointerValue;
/*!
* @brief The value as a non-retained object.
*
* If the value is not pointer-sized, @ref OFInvalidFormatException is thrown.
*/
@property (readonly, nonatomic) id nonretainedObjectValue;
/*!
* @brief Creates a new, autorelease OFValue with the specified bytes of the
* specified type.
*
* @param bytes The bytes containing the value
* @param objCType The ObjC type encoding for the value
* @return A new, autoreleased OFValue
*/
+ (instancetype)valueWithBytes: (const void *)bytes
objCType: (const char *)objCType;
/*!
* @brief Creates a new, autoreleased OFValue containing the specified pointer.
*
* Only the raw value of the pointer is stored and no data will be copied.
*
* @param pointer The pointer the OFValue should contain
* @return A new, autoreleased OFValue
*/
+ (instancetype)valueWithPointer: (const void *)pointer;
/*!
* @brief Creates a new, autoreleased OFValue containing the specified
* non-retained object.
*
* The object is not retained, which makes this useful for storing objects in
* collections without retaining them.
*
* @param object The object the OFValue should contain without retaining it
* @return A new, autoreleased OFValue
*/
+ (instancetype)valueWithNonretainedObject: (id)object;
/*!
* @brief Initializes an already allocated OFValue with the specified bytes of
* the specified type.
*
* @param bytes The bytes containing the value
* @param objCType The ObjC type encoding for the value
* @return An initialized OFValue
*/
- (instancetype)initWithBytes: (const void *)bytes
objCType: (const char *)objCType;
/*!
* @brief Initializes an already allocated OFValue containing the specified
* pointer.
*
* Only the raw value of the pointer is stored and no data will be copied.
*
* @param pointer The pointer the OFValue should contain
* @return An initialized OFValue
*/
- (instancetype)initWithPointer: (const void *)pointer;
/*!
* @brief Initializes an already allocated OFValue containing the specified
* non-retained object.
*
* The object is not retained, which makes this useful for storing objects in
* collections without retaining them.
*
* @param object The object the OFValue should contain without retaining it
* @return An initialized OFValue
*/
- (instancetype)initWithNonretainedObject: (id)object;
/*!
* @brief Gets the value.
*
* If the specified size does not match, this raises an
* @ref OFOutOfRangeException.
*
* @param value The buffer to copy the value into
* @param size The size of the value
*/
- (void)getValue: (void *)value
size: (size_t)size;
@end
OF_ASSUME_NONNULL_END
#if !defined(NSINTEGER_DEFINED) && !__has_feature(modules)
/* Required for array literals to work */
@compatibility_alias NSValue OFValue;
#endif