Method validate_downcastable_from

crates/vm/src/builtins/str.rs:2034–2038

(obj: &PyObject)

    const PAYLOAD_TYPE_ID: core::any::TypeId = core::any::TypeId::of::<PyStr>();

    unsafe fn validate_downcastable_from(obj: &PyObject) -> bool {
        // SAFETY: we know the object is a PyStr in this context
        let wtf8 = unsafe { obj.downcast_unchecked_ref::<PyStr>() };
        wtf8.is_utf8()
    }

    fn try_downcast_from(obj: &PyObject, vm: &VirtualMachine) -> PyResult<()> {
        let str = obj.try_downcast_ref::<PyStr>(vm)?;