fn max()

in starlark/src/stdlib/funcs.rs [677:712]

• 36 lines of code
• 6 McCabe index (conditional complexity)

    fn max(mut args: Vec<Value>, key: Option<Value>) -> anyhow::Result<Value<'v>> {
        let args = if args.len() == 1 {
            args.swap_remove(0)
        } else {
            heap.alloc(args)
        };
        let mut it = args.iterate(heap)?;
        let mut max = match it.next() {
            Some(x) => x,
            None => {
                return Err(anyhow!(
                    "Argument is an empty iterable, max() expect a non empty iterable"
                ));
            }
        };
        match key {
            None => {
                for i in it {
                    if max.compare(i)? == Ordering::Less {
                        max = i;
                    }
                }
            }
            Some(key) => {
                let mut cached = key.invoke_pos(&[max], eval)?;
                for i in it {
                    let keyi = key.invoke_pos(&[i], eval)?;
                    if cached.compare(keyi)? == Ordering::Less {
                        max = i;
                        cached = keyi;
                    }
                }
            }
        };
        Ok(max)
    }