Struct GraphObserveOne 

pub struct GraphObserveOne { /* private fields */ }

Single-node observe handle (canonical §3.6.2). D246: holds a Core-free Graph; &Core is passed per call.

Implementations

impl GraphObserveOne

pub fn node_id(&self) -> NodeId

The observed NodeId.

pub fn subscribe(&self, core: &Core, sink: Sink) -> ObserveSub

Subscribe a sink. Returns an ObserveSub id pair — detach owner-invoked (D246 rule 3).

pub fn pause(&self, core: &Core, lock: LockId) -> Result<(), PauseError>

Send [PAUSE, lock] upstream.

Errors

See PauseError.

pub fn resume( &self, core: &Core, lock: LockId, ) -> Result<Option<ResumeReport>, PauseError>

Send [RESUME, lock] upstream.

Errors

See PauseError.

pub fn invalidate(&self, core: &Core)

Send [INVALIDATE] upstream.

pub fn graph(&self) -> &Graph

The backing graph handle.