Method get

crates/vm/src/builtins/range.rs:150–183

(&self, index: &BigInt)

    #[inline]
    pub fn get(&self, index: &BigInt) -> Option<BigInt> {
        let start = self.start.as_bigint();
        let step = self.step.as_bigint();
        let stop = self.stop.as_bigint();
        if self.is_empty() {
            return None;
        }

        if index.is_negative() {
            let length = self.compute_length();
            let index: BigInt = &length + index;
            if index.is_negative() {
                return None;
            }

            Some(if step.is_one() {
                start + index
            } else {
                start + step * index
            })
        } else {
            let index = if step.is_one() {
                start + index
            } else {
                start + step * index
            };

            if (step.is_positive() && stop > &index) || (step.is_negative() && stop < &index) {
                Some(index)
            } else {
                None
            }
        }
    }

    #[inline]
    fn compute_length(&self) -> BigInt {