use std::fmt::Display;

pub struct ExpectedTokenError {
    line: usize,
    column_start: usize,
    actual: &'static str,
    expected: Vec<&'static str>,
} 

impl Display for ExpectedTokenError {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        write!(f, "line {} column {}:\nExpected one of {} but got {}", self.line, self.column_start, self.expected.join(", "), self.actual)
    }
}