fn encode[T](values T) string {
    $if T is $pointer {
        if voidptr(values) == unsafe { nil } {
            return 'nil'
        }
        return encode_pointer_struct(values)
    }
    return 'other'
}

fn encode_pointer_struct[T](values T) string {
    $for field in T.fields {
        dump('${field.name}') // works `name`
        mut val := values.$(field.name) // C error `root`
        dump('${val}')
    }
    return 'struct'
}

struct Node {
    name     string
    children []&Node
}

fn test_main() {
    assert encode('string') == 'other'
    assert encode(&Node(unsafe { nil })) == 'nil'
    assert encode(&Node{ name: 'root' }) == 'struct'
}