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swiftconditional-compilation

Conditionally-compiled case statement in swift

I've implemented an enum statement in Swift with computed properties. I want to add values that are conditionally compiled, e.g. only for certain configurations.

Here is an example of what I'm trying to do:

enum Rows: Int
{
    case Row1
    case Row2
    #if DEBUG
    case Debug
    #endif

    var rowTitle: String
    {
        case Row1: return "Row 1"
        case Row2: return "Row 2"
        #if DEBUG
        case Debug: return "Debug"
        #endif
    }
}

This does't seem to be supported as I get the following error message on the case statement within the switch statement:

'case' label can only appear inside a 'switch' statement

Is there a way to do this in Swift?

Thanks,
David

Solution

  • Conditional compilation of enum cases now works as of Swift 4.

    enum Foo {
    case bar

    #if DEBUG
    case baz
    #endif
}

let bar = Foo.bar

#if DEBUG
let baz = Foo.baz
#endif