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use std::hash::{Hash, Hasher};

#[cfg(feature = "os")]
use serde::{Deserialize, Serialize};

#[derive(Clone, Debug)]
#[cfg_attr(feature = "os", derive(Serialize, Deserialize))]
pub struct Unit {
    pub name: String,
    pub value: Option<Value>,
}

impl PartialEq for Unit {
    fn eq(&self, other: &Self) -> bool {
        self.name.eq(&other.name)
    }
}

impl Eq for Unit {}

impl Hash for Unit {
    fn hash<H: Hasher>(&self, state: &mut H) {
        self.name.hash(state)
    }
}

#[derive(Clone, Debug)]
#[cfg_attr(feature = "os", derive(Serialize, Deserialize))]
pub enum Value {
    Real(f64),
    Keyword(String),
}

impl Value {
    pub fn is_real(&self) -> bool {
        match &self {
            Self::Real(_) => true,
            Self::Keyword(_) => false,
        }
    }

    pub fn is_keyword(&self) -> bool {
        match &self {
            Self::Real(_) => false,
            Self::Keyword(_) => true,
        }
    }
}