Enum StepOutcome 

pub enum StepOutcome {
    Line(Line),
    AwaitingExternal,
}

Outcome of a single FlowInstance::advance step.

Like Line, but with an extra variant for when a binding handler deferred an external call (ExternalResult::Pending) — e.g. a world-access query hit during normal playback. The flow is paused with its state intact: inspect the pending call via pending_external_name / pending_external_args, supply the result with resolve_external, then call advance again.

step_single_line is the simpler API for consumers whose handler never pauses — it maps AwaitingExternal to an error.

Variants

Line(Line)

A line of output, or a yield point (Done/Choices/End).

AwaitingExternal

The flow paused on a deferred external; resolve it and advance.

Trait Implementations

impl Clone for StepOutcome

fn clone(&self) -> StepOutcome

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for StepOutcome

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.