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Add NS_SWIFT_NOTHROW and NS_NOESCAPE macros #207

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Merged
gcasa merged 1 commit into from
Jan 9, 2022
Merged

Add NS_SWIFT_NOTHROW and NS_NOESCAPE macros #207

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31 changes: 31 additions & 0 deletions Headers/Foundation/NSObjCRuntime.h
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Original file line number Diff line number Diff line change
Expand Up @@ -162,6 +162,37 @@ extern "C" {
# define NS_ASSUME_NONNULL_END
#endif

#if !__has_feature(nullability)
# ifndef _Nullable
# define _Nullable
# endif
# ifndef _Nonnull
# define _Nonnull
# endif
# ifndef _Null_unspecified
# define _Null_unspecified
# endif
#endif

/*
* Any argument that is passed inside a block is not going to escape
* the runtime of the function itself.
*/
#if __has_attribute(noescape)
# define NS_NOESCAPE __attribute__((noescape))
#else
# define NS_NOESCAPE
#endif

/*
* Prevent NSError from being imported by Swift as a method that throws.
*/
#if __has_attribute(swift_error)
# define NS_SWIFT_NOTHROW __attribute__((swift_error(none)))
#else
# define NS_SWIFT_NOTHROW
#endif

/*
* Backwards compatibility macro for instance type.
*/
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