rust/src/ast.rs


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use std::fmt::{self, Display};

#[derive(Debug, PartialEq)]
pub enum Value {
    Num(i32),
    Bool(bool),
    Sym(String),
}

impl Display for Value {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        match self {
            Value::Num(i) => write!(f, "{}", i),
            Value::Bool(b) => write!(f, "{}", b),
            Value::Sym(s) => write!(f, "{}", s),
        }
    }
}