Lib.rs

C ABI definitions for the FFI boundary that out-of-process operators, procedures, transforms, flows, and connectors implement. Defines the repr(C) shapes of catalog handles, columnar data, callbacks, contexts, and constants that cross the host-extension boundary in either direction.

The crate has no logic - only types and constants. Both sides of the boundary depend on it: the host side wraps these types in safe Rust through reifydb-sdk; the guest side links against them directly to expose its symbols to the host.

Invariant: every type here is wire-stable. Adding, removing, reordering, or resizing a field is a coordinated breaking change for every distributed extension that links against an older version of this crate. New fields go at the end of structs and behind a versioned context handle that the host inspects before reading them.