Module altrep_helpers 

ALTREP helpers for ExternalPtr — data1/data2 slot access.

Convenience functions for ALTREP implementations that store their data in ExternalPtr slots. Also provides the Sidecar marker type for #[r_data] fields.

Structs

Computed

Marker type of a read-only R field computed from the Rust value (#1883).

RSidecar

Marker type for enabling R sidecar accessors in an ExternalPtr struct.

Functions

altrep_data1_as^⚠

Extract the ALTREP data1 slot as a typed ExternalPtr<T>.

altrep_data1_as_unchecked^⚠

Extract the ALTREP data1 slot (unchecked version).

altrep_data1_mut^⚠

Get a mutable reference to data in ALTREP data1 slot via ErasedExternalPtr.

altrep_data1_mut_unchecked^⚠

Get a mutable reference to data in ALTREP data1 slot (unchecked version).

altrep_data2_as^⚠

Extract the ALTREP data2 slot as a typed ExternalPtr<T>.

altrep_data2_as_unchecked^⚠

Extract the ALTREP data2 slot (unchecked version).

data1_value_mut 🔒 ^⚠

The T that erased holds, with no RefCell borrow.