libmedium 0.13.4

use crate::units::{Error as UnitError, Raw, Result as UnitResult};

use std::borrow::Cow;
use std::fmt;
use std::ops::{Add, Div, Mul};

/// Struct that represents a frequency.
#[derive(Debug, Clone, Copy, PartialOrd, PartialEq, Hash, Ord, Eq)]
pub struct Frequency(u32);

impl Frequency {
    /// Creates a `Frequency` struct from a value measuring times per second.
    pub fn from_hertz(hz: impl Into<u32>) -> Self {
        Frequency(hz.into())
    }

    /// Returns the structs's value in times per second.
    pub fn as_hertz(self) -> u32 {
        self.0
    }
}

impl Raw for Frequency {
    fn from_raw(raw: &str) -> UnitResult<Self> {
        raw.trim()
            .parse::<u32>()
            .map(Frequency::from_hertz)
            .map_err(UnitError::parsing)
    }

    fn to_raw(&self) -> Cow<'_, str> {
        Cow::Owned(self.as_hertz().to_string())
    }
}

impl fmt::Display for Frequency {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        write!(f, "{}hz", self.as_hertz())
    }
}

impl Add for Frequency {
    type Output = Self;

    fn add(self, other: Self) -> Self {
        Frequency(self.0 + other.0)
    }
}

impl<T: Into<u32>> Mul<T> for Frequency {
    type Output = Self;

    fn mul(self, other: T) -> Frequency {
        Frequency(self.0 * other.into())
    }
}

impl<T: Into<u32>> Div<T> for Frequency {
    type Output = Self;

    fn div(self, other: T) -> Frequency {
        Frequency(self.0 / other.into())
    }
}