struct ObjectDesc {
    typ u32
    ptr voidptr
}

struct ABCD {
    name string
}

pub fn cast_object_desc[H](desc &ObjectDesc) ?H {
    $if H is &ABCD {
        /*
        if desc.typ == 12 { // desc == ABCD
            return &ABCD(desc.ptr)
        }*/
        if desc.typ == 12 { // desc == ABCD
            return ?&ABCD(unsafe { &ABCD(desc.ptr) })
        }
    }
    return none
}

fn test_option_ptr() {
    obj := ABCD{
        name: 'Foo'
    }
    desc := ObjectDesc{
        typ: 12
        ptr: voidptr(&obj)
    }
    obj2 := cast_object_desc[&ABCD](desc) or { panic('wwww') }
    // obj2 := &ABCD(desc.ptr)
    assert obj2.name == 'Foo'
}