engine/engine_binding library

Classes

EngineBinding

Abstracts the FRB engine calls so the client is testable without the native lib. Returns native GridUpdates (translation from FRB types lives in the FRB-backed implementation).

FrbEngineBinding

FRB-backed binding. Owns the engine handle, translates FRB RenderUpdate into native GridUpdate, and dispatches polled terminal→host events.

RewireableEngineBinding

Implemented by bindings (typically test fakes) that allow rewiring their callbacks after construction. Production bindings like FrbEngineBinding take callbacks in their constructor and do NOT mix this in — they're wired once by EngineFactory and never rebound.