Associated object. Associated-NSNumber.m and Associated.m are code snippets for creating methods for property with associated object. KKNSObject+Associated.h is a macro that can be use to automatically create associated methods for property.

Associated-NSNumber.codesnippet

- (<#type#>)<#propertyName#> {
    return [objc_getAssociatedObject(self, _cmd) <#NSNumberMethod#>];
}

- (void)set<#propertyName#>:(<#type#>)object
{
    objc_setAssociatedObject(self, @selector(<#propertyName#>), [NSNumber numberWith:object], OBJC_ASSOCIATION_);
}

Associated.codesnippet

- (<#type#>)<#propertyName#> {
    return objc_getAssociatedObject(self, _cmd);
}

- (void)set<#propertyName#>:(<#type#>)object
{
    objc_setAssociatedObject(self, @selector(<#propertyName#>), object, OBJC_ASSOCIATION_);
}

KKExample.m

//
//  NSObject+Assosiated.h
//  NSObject-Associated
//
//  Created by Konstantin Koval on 29/03/14.
//  Copyright (c) 2014 Konstantin Koval. All rights reserved.
//

#import <Foundation/Foundation.h>

@interface NSObject (AssociatedTest)

@property (nonatomic, strong) NSString *name;
@property (nonatomic, assign) id delegate;

@end

// Implementation
#import "KKNSObject+Associated.h"

@implementation NSObject (AssociatedTest)

ASSOCIATED(name, setName, NSString *, OBJC_ASSOCIATION_RETAIN_NONATOMIC)
ASSOCIATED(delegate, setDelegate, id, OBJC_ASSOCIATION_ASSIGN)

@end

KKNSObject+Associated.h

//
//  KKNSObject+Assosiated.h
//  NSObject-Associated
//
//  Created by Konstantin Koval on 29/03/14.
//  Copyright (c) 2014 Konstantin Koval. All rights reserved.
//

/**
 * A macro that creates getter and setter for your assosiated object
 *
 * @param propertyName Getter funtion name
 * @param setter Setter funtion name
 * @param objc_AssociationPolicy Memory policy for assosiated object
 *
 * Available option: OBJC_ASSOCIATION_ASSIGN, OBJC_ASSOCIATION_RETAIN_NONATOMIC, OBJC_ASSOCIATION_COPY_NONATOMIC, OBJC_ASSOCIATION_RETAIN, OBJC_ASSOCIATION_COPY
 *
 */
#import <objc/runtime.h>
#define ASSOCIATED(propertyName, setter, type, objc_AssociationPolicy)\
- (type)propertyName {\
return objc_getAssociatedObject(self, _cmd);\
}\
\
- (void)setter:(type)object\
{\
objc_setAssociatedObject(self, @selector(propertyName), object, objc_AssociationPolicy);\
}

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