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ARC Helper
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| // | |
| // ARC Helper | |
| // | |
| // Version 2.2 | |
| // | |
| // 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 | |
| // | |
| #import <Availability.h> | |
| #undef ah_retain | |
| #undef ah_dealloc | |
| #undef ah_autorelease autorelease | |
| #undef ah_dealloc dealloc | |
| #if __has_feature(objc_arc) | |
| #define ah_retain self | |
| #define ah_release self | |
| #define ah_autorelease self | |
| #define ah_dealloc self | |
| #else | |
| #define ah_retain retain | |
| #define ah_release release | |
| #define ah_autorelease autorelease | |
| #define ah_dealloc dealloc | |
| #undef __bridge | |
| #define __bridge | |
| #undef __bridge_transfer | |
| #define __bridge_transfer | |
| #endif | |
| // Weak reference support | |
| #import <Availability.h> | |
| #if !__has_feature(objc_arc_weak) | |
| #undef ah_weak | |
| #define ah_weak unsafe_unretained | |
| #undef __ah_weak | |
| #define __ah_weak __unsafe_unretained | |
| #endif | |
| // Weak delegate support | |
| #import <Availability.h> | |
| #undef ah_weak_delegate | |
| #undef __ah_weak_delegate | |
| #if __has_feature(objc_arc_weak) && \ | |
| (!(defined __MAC_OS_X_VERSION_MIN_REQUIRED) || \ | |
| __MAC_OS_X_VERSION_MIN_REQUIRED >= __MAC_10_8) | |
| #define ah_weak_delegate weak | |
| #define __ah_weak_delegate __weak | |
| #else | |
| #define ah_weak_delegate unsafe_unretained | |
| #define __ah_weak_delegate __unsafe_unretained | |
| #endif | |
| // ARC Helper ends |
@nverinaud you may prefer this older version if you are worried about performance:
https://gist.github.com/nicklockwood/1563325/4d32686a6058cb9bc409767ee7cc37a7993cb2df
Xcode gave me "Extra tokens at end of #undef directive" warning message.
#undef ah_autorelease autorelease
#undef ah_dealloc dealloc
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@nverinaud you're right, but I changed it to use the ah prefix for everything some time ago (before your comment), so that criticism is no longer applicable.
The performance thing is basically a non-issue.