Bridging an array of enums from Swift to Objective-C

Question

Since Swift 1.2 it's been possible to automatically convert enums in Swift to Objective-C. However, as far as I can tell, it is not possible to convert an array of enums. Is this true?

So, this is possible:

@objc public enum SomeEnumType: Int {
    case OneCase
    case AnotherCase
}

But this is not:

public func someFunc(someArrayOfEnums: Array<SomeEnumType>) -> Bool {
    return true
}

Can anyone verify this? And how would you recommend working around this? One approach would be to have two method declarations e.g:

// This will not automatically get bridged.
public func someFunc(someArrayOfEnums: Array<SomeEnumType>) -> Bool {
    return true
}

// This will automatically get bridged.
public func someFunc(someArrayOfEnums: Array<Int>) -> Bool {
    return true
}

But this is polluting the Swift interface. Any way to hide the second function declaration for any Swift consumers?

Answer 1

It seems, we cannot expose Array<SomeEnumType> parameter to Obj-C even if SomeEnumType is @objc.

As a workaround, how about:

@objc(someFunc:)
func objc_someFunc(someArrayOfEnums: Array<Int>) -> Bool {
    return someFunc(someArrayOfEnums.map({ SomeEnumType(rawValue: $0)! }))
}

func someFunc(someArrayOfEnums: Array<SomeEnumType>) -> Bool {
    return true
}