Getting the name of a Swift enum value

Using Swift
18

You could probably ask the runtime to get the case name, but keep in mind things can change without notice, so use at your own risk:

@_silgen_name("swift_EnumCaseName")
func _getEnumCaseName<T>(_ value: T) -> UnsafePointer<CChar>?

func getEnumCaseName<T>(for value: T) -> String? {
    if let stringPtr = _getEnumCaseName(value) {
        return String(validatingUTF8: stringPtr)
    }
    return nil
}

enum Foo {
    case bar1
    case bar2(Int)
}

let b1 = Foo.bar1
let b2 = Foo.bar2(0)

print(getEnumCaseName(for: b1)) // bar1
print(getEnumCaseName(for: b2)) // bar2
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