testasmcomp/parsecmmaux.ml

   1 (***********************************************************************)
   2 (*                                                                     *)
   3 (*                           Objective Caml                            *)
   4 (*                                                                     *)
   5 (*            Xavier Leroy, projet Cristal, INRIA Rocquencourt         *)
   6 (*                                                                     *)
   7 (*  Copyright 1996 Institut National de Recherche en Informatique et   *)
   8 (*  en Automatique.  All rights reserved.  This file is distributed    *)
   9 (*  under the terms of the Q Public License version 1.0.               *)
  10 (*                                                                     *)
  11 (***********************************************************************)
  12
  13 (* $Id$ *)
  14
  15 (* Auxiliary functions for parsing *)
  16
  17 type error =
  18     Unbound of string
  19
  20 exception Error of error
  21
  22 let tbl_ident = (Hashtbl.create 57 : (string, Ident.t) Hashtbl.t)
  23
  24 let bind_ident s =
  25   let id = Ident.create s in
  26   Hashtbl.add tbl_ident s id;
  27   id
  28
  29 let find_ident s =
  30   try
  31     Hashtbl.find tbl_ident s
  32   with Not_found ->
  33     raise(Error(Unbound s))
  34
  35 let unbind_ident id =
  36   Hashtbl.remove tbl_ident (Ident.name id)
  37
  38 let report_error = function
  39     Unbound s ->
  40       prerr_string "Unbound identifier "; prerr_string s; prerr_endline "."