let printUsage () =
  print_endline "Usage: jlox [script]";
  exit 64

let () =
  let argc = Array.length Sys.argv in
  match argc - 1 with
  | 0 -> Lox.runRepl ()
  | 1 -> (
      let path = Sys.argv.(1) in
      (* Printf.printf "Running script %s\n" path; *)
      let ic = open_in path in
      let source = In_channel.input_all ic in
      match Lox.run source with
      | Error e ->
          Lox.Error.print_error e;
          exit 1
      | Ok () -> exit 0)
  | _ -> printUsage ()