mllex/main.sml

   1 (* Copyright (C) 1999-2005 Henry Cejtin, Matthew Fluet, Suresh
   2  *    Jagannathan, and Stephen Weeks.
   3  * Copyright (C) 1997-2000 NEC Research Institute.
   4  *
   5  * MLton is released under a BSD-style license.
   6  * See the file MLton-LICENSE for details.
   7  *)
   8
   9 structure Main =
  10 struct
  11
  12 fun usage s =
  13    Process.usage {usage = "file.lex ...",
  14                   msg = s}
  15
  16 fun main args =
  17    let
  18       val rest =
  19          let open Popt
  20          in parse {switches = args, opts = []}
  21          end
  22    in
  23       case rest of
  24          Result.No msg => usage msg
  25        | Result.Yes [] => usage "no files"
  26        | Result.Yes files => List.foreach (files, LexGen.lexGen)
  27    end
  28
  29 val main = Process.makeMain main
  30
  31 end