fn r#in()

in crates/iceberg/src/expr/visitors/inclusive_metrics_evaluator.rs [423:465]
31 lines of code
10 McCabe index (conditional complexity)

    fn r#in(
        &mut self,
        reference: &BoundReference,
        literals: &FnvHashSet<Datum>,
        _predicate: &BoundPredicate,
    ) -> crate::Result<bool> {
        let field_id = reference.field().id;

        if self.contains_nulls_only(field_id) || self.contains_nans_only(field_id) {
            return ROWS_CANNOT_MATCH;
        }

        if literals.len() > IN_PREDICATE_LIMIT {
            // skip evaluating the predicate if the number of values is too big
            return ROWS_MIGHT_MATCH;
        }

        if let Some(lower_bound) = self.lower_bound(field_id) {
            if lower_bound.is_nan() {
                // NaN indicates unreliable bounds. See the InclusiveMetricsEvaluator docs for more.
                return ROWS_MIGHT_MATCH;
            }

            if !literals.iter().any(|datum| datum.ge(lower_bound)) {
                // if all values are less than lower bound, rows cannot match.
                return ROWS_CANNOT_MATCH;
            }
        }

        if let Some(upper_bound) = self.upper_bound(field_id) {
            if upper_bound.is_nan() {
                // NaN indicates unreliable bounds. See the InclusiveMetricsEvaluator docs for more.
                return ROWS_MIGHT_MATCH;
            }

            if !literals.iter().any(|datum| datum.le(upper_bound)) {
                // if all values are greater than upper bound, rows cannot match.
                return ROWS_CANNOT_MATCH;
            }
        }

        ROWS_MIGHT_MATCH
    }