(***********************************************************************)
(*                                                                     *)
(*                                OCaml                                *)
(*                                                                     *)
               , projet Cristal , INRIA Rocquencourt         
(*                                                                     *)
   Copyright 1996 Institut National de Recherche en Informatique et   
   en Automatique .   All rights reserved .   This file is distributed    
   under the terms of the Q Public License version 1.0 .               
(*                                                                     *)
(***********************************************************************)

  $ Id$

(* Auxiliary functions for parsing *)

type error =
    Unbound of string

exception Error of error

let tbl_ident = (Hashtbl.create 57 : (string, Ident.t) Hashtbl.t)

let bind_ident s =
  let id = Ident.create s in
  Hashtbl.add tbl_ident s id;
  id

let find_ident s =
  try
    Hashtbl.find tbl_ident s
  with Not_found ->
    raise(Error(Unbound s))

let unbind_ident id =
  Hashtbl.remove tbl_ident (Ident.name id)

let report_error = function
    Unbound s ->
      prerr_string "Unbound identifier "; prerr_string s; prerr_endline "."

*********************************************************************
                                                                     
                                OCaml                                
                                                                     
                                                                     
                                                                     
*********************************************************************
 Auxiliary functions for parsing 
               , projet Cristal , INRIA Rocquencourt         
   Copyright 1996 Institut National de Recherche en Informatique et   
   en Automatique .   All rights reserved .   This file is distributed    
   under the terms of the Q Public License version 1.0 .               

  $ Id$


type error =
    Unbound of string

exception Error of error

let tbl_ident = (Hashtbl.create 57 : (string, Ident.t) Hashtbl.t)

let bind_ident s =
  let id = Ident.create s in
  Hashtbl.add tbl_ident s id;
  id

let find_ident s =
  try
    Hashtbl.find tbl_ident s
  with Not_found ->
    raise(Error(Unbound s))

let unbind_ident id =
  Hashtbl.remove tbl_ident (Ident.name id)

let report_error = function
    Unbound s ->
      prerr_string "Unbound identifier "; prerr_string s; prerr_endline "."
