//! This file contains information on where a [`Token`] or [`Node`] is within the source
//! code for more informative errors.
//!
//! This will likely be attached to a [`Token`] which will in turn be attached to an AST
//! [`Node`].

use std::fmt::Display;

use crate::model::module::Module;

///  Information on where the token is within the source.
#[derive(Debug)]
pub struct SourceInfo {
    /// The line number within the source file underpinned by `module_id`.
    pub line_no: usize,
    pub module: Module,
    /// The indexes where this token may be found (line-local).
    pub span: std::ops::Range<usize>,
}

impl Display for SourceInfo {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        write!(f, "{}", self.module.name)
    }
}