Struct AlertEvaluator 

pub struct AlertEvaluator { /* private fields */ }

Evaluates AlertRules against a price feed, tracking the per-symbol history that crossing conditions need.

Exposed so consumers that already own a price stream (the server’s shared hub, for instance) can apply alerts without re-wrapping the stream.

Implementations

impl AlertEvaluator

pub fn new(rules: impl IntoIterator<Item = AlertRule>) -> Self

Build an evaluator from a rule set.

pub fn symbols(&self) -> Vec<String>

Distinct symbols referenced by the rule set, in first-seen order.

pub fn is_exhausted(&self) -> bool

true once every rule has fired and none can fire again.

pub fn evaluate(&mut self, update: &PriceUpdate) -> Vec<AlertEvent>

Feed one tick, returning the alerts it triggered.