mlyacc/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.grm",
  14                   msg = s}
  15
  16 fun main args =
  17    let
  18       val rest =
  19          let open Popt
  20          in parse {switches = args,
  21                    opts = []}
  22          end
  23    in case rest of
  24       Result.No msg => usage msg
  25     | Result.Yes [file] => ParseGen.parseGen file
  26     | _ => usage "too many files"
  27    end
  28
  29 val main = Process.makeMain main
  30
  31 end