Function in_weak_set

crates/vm/src/stdlib/_abc.rs:84–112

Check if obj is in the weak set

(
        set_lock: &PyRwLock<Option<PyRef<PySet>>>,
        obj: &PyObject,
        vm: &VirtualMachine,
    )

    /// Check if obj is in the weak set
    fn in_weak_set(
        set_lock: &PyRwLock<Option<PyRef<PySet>>>,
        obj: &PyObject,
        vm: &VirtualMachine,
    ) -> PyResult<bool> {
        let set_opt = set_lock.read();
        let set = match &*set_opt {
            Some(s) if !s.elements().is_empty() => s.clone(),
            _ => return Ok(false),
        };
        drop(set_opt);

        // Create a weak reference to the object
        let weak_ref = match obj.downgrade(None, vm) {
            Ok(w) => w,
            Err(e) => {
                // If we can't create a weakref (e.g., TypeError), the object can't be in the set
                if e.class().is(vm.ctx.exceptions.type_error) {
                    return Ok(false);
                }
                return Err(e);
            }
        };

        // Use vm.call_method to call __contains__
        let weak_ref_obj: PyObjectRef = weak_ref.into();
        vm.call_method(set.as_ref(), "__contains__", (weak_ref_obj,))?
            .try_to_bool(vm)
    }

    /// Add obj to the weak set
    fn add_to_weak_set(