Enum FunctionEval 

pub enum FunctionEval {
    Returned(Value),
    AwaitingExternal,
}

Outcome of an engine→ink function evaluation (FlowInstance::begin_function_eval / resume_function_eval).

Evaluating an ink function from engine code does not advance the player-visible story: its output is isolated and discarded, and the transcript is untouched. The only result is the function’s return value — unless the function calls an external that can’t be resolved synchronously.

Variants

Returned(Value)

The function returned this value and evaluation is complete. (Functions with no explicit ~ return yield Value::Null.)

AwaitingExternal

The function called an external whose handler returned ExternalResult::Pending — typically a binding that needs engine/World access resolved out-of-band. Evaluation is paused with its full state intact. Inspect the pending call via pending_external_name / pending_external_args, supply the result with resolve_external, then call resume_function_eval.

Trait Implementations

impl Clone for FunctionEval

fn clone(&self) -> FunctionEval

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FunctionEval

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

Formats the value using the given formatter.