Retain/Release/Autorelease macros for using non-ARC code with an ARC project.

WBMemory.h

#ifdef __OBJC__

#ifndef WBRetain
#if __has_feature(objc_arc)
#	define WBRetain(obj)		obj
#else
#	define WBRetain(obj)		[obj retain]
#endif
#endif

#ifndef WBRelease
#if __has_feature(objc_arc)
#	define WBRelease(obj)
#else
#	define	WBRelease(obj)		[obj release], obj = nil
#endif
#endif

#ifndef WBAutorelease
#if __has_feature(objc_arc)
#	define WBAutorelease(obj)	obj
#else
#	define WBAutorelease(obj)	[obj autorelease]
#endif
#endif

#ifndef WBSuperDealloc
// replace '[super dealloc];' in 'dealloc' body with this macro
// ie
// - (void)dealloc
// {
//      WBRelease(ivar1);
//      WBRelease(ivar2);
//      WBSuperDealloc;
// }
//
#if __has_feature(objc_arc)
# define WBSuperDealloc  [super dealloc]
#else
# define WBSuperDealloc
#endif
#endif
#endif