polished-css 0.1.0

Craft polished CSS in Rust following CSSWG standards. Achieve type-safety, modularity, atomicity, and ergonomic styling for front-end applications.
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/// [MDN](https://developer.mozilla.org/en-US/docs/Web/CSS/ratio)
/// [CSSWG](https://drafts.csswg.org/css-values/#ratios)
#[derive(Clone, Debug, PartialEq)]
pub struct Ratio {
    pub a: f64,
    pub b: Option<f64>,
}

impl std::fmt::Display for Ratio {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        if let Some(b) = self.b {
            write!(f, "{}/{}", self.a, b)
        } else {
            write!(f, "{}", self.a)
        }
    }
}

impl From<i32> for Ratio {
    fn from(value: i32) -> Self {
        Self {
            a: value.into(),
            b: None,
        }
    }
}
impl From<f64> for Ratio {
    fn from(value: f64) -> Self {
        Self { a: value, b: None }
    }
}

impl From<(i32, i32)> for Ratio {
    fn from(value: (i32, i32)) -> Self {
        Self {
            a: value.0.into(),
            b: Some(value.1.into()),
        }
    }
}
impl From<(f64, f64)> for Ratio {
    fn from(value: (f64, f64)) -> Self {
        Self {
            a: value.0,
            b: Some(value.1),
        }
    }
}

impl From<(i32, Option<i32>)> for Ratio {
    fn from(value: (i32, Option<i32>)) -> Self {
        Self {
            a: value.0.into(),
            b: value.1.map(std::convert::Into::into),
        }
    }
}
impl From<(f64, Option<f64>)> for Ratio {
    fn from(value: (f64, Option<f64>)) -> Self {
        Self {
            a: value.0,
            b: value.1,
        }
    }
}

pub trait RatioStorage: From<Ratio> {
    #[must_use]
    fn ratio(value: Ratio) -> Self
    where
        Self: Sized + From<Ratio>,
    {
        Self::from(value)
    }
}

// TODO: Add bounds, cannot be zero

#[cfg(test)]
mod test {
    #[test]
    fn display() {
        assert_eq!(super::Ratio::from((1, None)).to_string(), "1");
        assert_eq!(super::Ratio::from(1).to_string(), "1");
        assert_eq!(super::Ratio::from((4, Some(3))).to_string(), "4/3");
        assert_eq!(super::Ratio::from((16.0, Some(9.0))).to_string(), "16/9");
        assert_eq!(
            super::Ratio::from((66.6, Some(133.7))).to_string(),
            "66.6/133.7"
        );
    }
}