ARC Helper

ARCHelper.h

//
//  ARC Helper
//
//  Version 1.3.1
//
//  Created by Nick Lockwood on 05/01/2012.
//  Copyright 2012 Charcoal Design
//
//  Distributed under the permissive zlib license
//  Get the latest version from here:
//
//  https://gist.github.com/1563325
//

#ifndef AH_RETAIN
#if __has_feature(objc_arc)
#define AH_RETAIN(x) (x)
#define AH_RELEASE(x) (void)(x)
#define AH_AUTORELEASE(x) (x)
#define AH_SUPER_DEALLOC (void)(0)
#define __AH_BRIDGE __bridge
#else
#define __AH_WEAK
#define AH_WEAK assign
#define AH_RETAIN(x) [(x) retain]
#define AH_RELEASE(x) [(x) release]
#define AH_AUTORELEASE(x) [(x) autorelease]
#define AH_SUPER_DEALLOC [super dealloc]
#define __AH_BRIDGE
#endif
#endif

//  Weak reference support

#import <Availability.h>
#ifndef AH_WEAK
#if defined __IPHONE_OS_VERSION_MIN_REQUIRED
#if __IPHONE_OS_VERSION_MIN_REQUIRED >= 50000
#define __AH_WEAK __weak
#define AH_WEAK weak
#else
#define __AH_WEAK __unsafe_unretained
#define AH_WEAK unsafe_unretained
#endif
#elif defined __MAC_OS_X_VERSION_MIN_REQUIRED
#if __MAC_OS_X_VERSION_MIN_REQUIRED >= 1070
#define __AH_WEAK __weak
#define AH_WEAK weak
#else
#define __AH_WEAK __unsafe_unretained
#define AH_WEAK unsafe_unretained
#endif
#endif
#endif

//  ARC Helper ends