use super::Kartesian;
use num::*;

pub trait MaximumFromMap<T: Integer> {
    fn maximum<U>(map: &Vec<Vec<U>>) -> Kartesian<T>;
}

macro_rules! impl_maximum {
    ($type:ident) => {
        impl MaximumFromMap<$type> for Kartesian<$type> {
            fn maximum<U>(map: &Vec<Vec<U>>) -> Kartesian<$type> {
                Kartesian {
                    x: map.len() as $type,
                    y: map[0].len() as $type,
                }
            }
        }
    };
}
impl_maximum!(u8);
impl_maximum!(u16);
impl_maximum!(u32);
impl_maximum!(u64);
impl_maximum!(u128);

impl MaximumFromMap<usize> for Kartesian<usize> {
    fn maximum<U>(map: &Vec<Vec<U>>) -> Kartesian<usize> {
        Kartesian {
            x: map.len(),
            y: map[0].len(),
        }
    }
}