Seems reasonable to me. It looks like SR-746
<https://bugs.swift.org/browse/SR-746> tracks the same thing. Patches welcome!
Jordan
> On Jun 8, 2016, at 7:06, Svein Halvor Halvorsen via swift-users
> <swift-users@swift.org> wrote:
>
> This is even worse if I want to create a singleton, and ensure that the only
> way to access it, is through a static let on the class:
>
> class Singleton: NSObject {
> static let instance = Singleton()
> private override init() {
> super.init()
> }
> }
>
> In Swift, I can't instantiate this class, since it has no internal/public
> initializers. However, since it inherits from NSObject (which is necessary to
> access it from objc), I can initialize it from objc, even though it's
> private. Annotating it with @nonobjc doesn't help either.
>
> Is there a reason why Swift doesn't automatically declare accessors from the
> super class, that are either private or @nonobjc in the Swift subclass
> implementation, as __unavailable?
>
> Is there anyway I can enforce it using some (combination of) attributes?
>
>
> sv.
>
>
>
> 2016-06-08 15:12 GMT+02:00 Svein Halvor Halvorsen <svei...@lvor.halvorsen.cc
> <mailto:svei...@lvor.halvorsen.cc>>:
> Hi,
>
> In Objective-C, I've often attributed initializer from super classes as
> unavailable. Like this;
>
> @class Dependency;
> @interface SomeClass : NSObject
> - (nullable instancetype)init __unavailable;
> - (nonnull instancetype)initWithDependency:(nonnull Dependency *)dependency;
> @end
>
> This makes the compiler complain if I try to instantiate [[SomeClass alloc]
> init];
>
> However, If I declare a Swift class like this:
>
> class SomeClass: NSObject {
> init(dependency: Dependency) {
> super.init()
> }
> }
>
> The generated header file will look like this:
>
> @interface SomeClass : NSObject
> - (nonnull instancetype)initWithDependency:(Dependency * _Nonnull)dependency
> OBJC_DESIGNATED_INITIALIZER;
> @end
>
> If I try to use init, it will be a run time error, and not a compile time
> error.
> It there any way I can make Swift create the desired objc header file?
>
>
> Svein Halvor
>
>
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