40 lines
1.3 KiB
OCaml
40 lines
1.3 KiB
OCaml
(***********************************************************************)
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(* *)
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(* Objective Caml *)
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(* *)
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(* Xavier Leroy, projet Cristal, INRIA Rocquencourt *)
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(* *)
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(* Copyright 1996 Institut National de Recherche en Informatique et *)
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(* Automatique. Distributed only by permission. *)
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(* *)
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(***********************************************************************)
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(* $Id$ *)
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(* Auxiliary functions for parsing *)
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type error =
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Unbound of string
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exception Error of error
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let tbl_ident = (Hashtbl.create 57 : (string, Ident.t) Hashtbl.t)
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let bind_ident s =
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let id = Ident.create s in
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Hashtbl.add tbl_ident s id;
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id
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let find_ident s =
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try
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Hashtbl.find tbl_ident s
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with Not_found ->
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raise(Error(Unbound s))
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let unbind_ident id =
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Hashtbl.remove tbl_ident (Ident.name id)
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let report_error = function
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Unbound s ->
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prerr_string "Unbound identifier "; prerr_string s; prerr_endline "."
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