use std::fmt; #[derive(Debug)] pub enum ErrorKind { // CompileError, // RuntimeError, InternalError(&'static str), } #[derive(Debug)] pub struct Error { pub kind: ErrorKind, } impl fmt::Display for Error { fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { write!(f, "[line NYI] Error: {:?}", self.kind) } } pub type LoxResult = Result;