fn contains()

in src/builder.rs [343:368]

• 24 lines of code
• 7 McCabe index (conditional complexity)

    fn contains(&self, item: &T) -> bool {
        let Some(entry) = self.index.get(item.block()) else {
            return false;
        };
        let result = (|| {
            // Empty blocks do not contain anything,
            // despite having inner product 0 with everything.
            if entry.m == 0 {
                return false;
            }
            let mut eq = item.as_query(entry.m);
            eq.s += entry.offset;
            for i in 0..entry.rank {
                if eq.eval(&self.solution[i]) != 0 {
                    return false;
                }
            }
            for exception in &entry.exceptions {
                if exception == item.discriminant() {
                    return false;
                }
            }
            true
        })();
        result ^ entry.inverted
    }