Module host 

Traits

HostCallBridge

Embedder-supplied bridge for host_call ops.

Functions

clear_host_call_bridge

Remove the current thread’s bridge. Idempotent.

dispatch_host_call_bridge

Dispatch (capability, operation, params) to the currently-installed HostCallBridge, if any. Some(Ok(_)) means the bridge handled the call; Some(Err(_)) means it tried but raised; None means there is no bridge or the bridge declined this op (returned Ok(None)).

set_host_call_bridge

Install a bridge for the current thread. The bridge is consulted on every host_call after mock matching but before the built-in match arms, so embedders can override anything they like (and equally punt on anything they don’t, by returning Ok(None)).