fn is_in()

in starlark/src/values/types/range.rs [213:245]

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

    fn is_in(&self, other: Value) -> anyhow::Result<bool> {
        let other = match other.unpack_num().and_then(|n| n.as_int()) {
            Some(other) => other,
            None => {
                // Consider `"a" in range(3)`
                //
                // Should we error or return false?
                // Go Starlark errors. Python returns false.
                // Discussion at https://github.com/bazelbuild/starlark/issues/175
                return Ok(false);
            }
        };
        if !self.to_bool() {
            return Ok(false);
        }
        if self.start == other {
            return Ok(true);
        }
        if self.step.get() > 0 {
            if other < self.start || other >= self.stop {
                return Ok(false);
            }
            Ok((other.wrapping_sub(self.start) as u64) % (self.step.get() as u64) == 0)
        } else {
            if other > self.start || other <= self.stop {
                return Ok(false);
            }
            Ok(
                (self.start.wrapping_sub(other) as u64) % (self.step.get().wrapping_neg() as u64)
                    == 0,
            )
        }
    }