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use std::fmt::{Display, Formatter, Result};
use std::ops::{Add, Sub, AddAssign, SubAssign, Div, Mul, DivAssign, MulAssign};
use crate::metric::Unit;
use crate::metric::Primitive;
use crate::declare_unit_basics;
#[derive(Copy, Clone, Debug, PartialOrd, PartialEq)]
pub enum Mass {
Base(f64, fn(f64) -> f64, &'static str),
Canonical(f64),
Kilogram(f64),
Milligram(f64),
Gram(f64),
Tonne(f64),
Ounce(f64), // international avoirdupois ounce
Pound(f64), // International avoirdupois pound
}
impl Unit<Mass> for Mass {
fn to_si_unit(&self) -> Mass {
match self {
Mass::Base(_, _, _) => self.clone(),
Mass::Canonical(value) => Mass::Base(value.clone(), |x| x, "kg"),
Mass::Kilogram(value) => Mass::Base(value.clone(), |x| x, "kg"),
Mass::Gram(value) => Mass::Base(value / 1000.0, |x| x * 1000.0, "g"),
Mass::Milligram(value) => Mass::Base(value / 1_000_000.0, |x| x * 1_000_000.0, "mg"),
Mass::Tonne(value) => Mass::Base(value * 1000.0, |x| x / 1000.0, "t"),
Mass::Ounce(value) => Mass::Base(value * 28.349523125 / 1000.0, |x| x / 28.349523125 * 1000.0, "℥"),
Mass::Pound(value) => Mass::Base(value * 0.45359237, |x| x / 0.45359237, "lb"),
}
}
}
declare_unit_basics!(Mass);
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