rlox/src/misc.rs

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

#[derive(Copy, Clone)]
pub struct CodePos {
    pub line: u32,
    pub col: u32,
}

impl Default for CodePos {
    fn default() -> Self {
        Self { line: 1, col: 0 }
    }
}

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

impl Debug for CodePos {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        write!(f, "{}:{}", self.line, self.col)
    }
}

/*====================================================================================================================*/

pub fn indent(s: String) -> String {
    s.split('\n')
        .map(|line| format!("\t{line}"))
        .collect::<Vec<String>>()
        .join("\n")
}