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(***********************************************************************)
(* *)
(* Objective Caml *)
(* *)
(* Xavier Leroy, projet Cristal, INRIA Rocquencourt *)
(* *)
(* Copyright 2002 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. *)
(* *)
(***********************************************************************)
(* $Id$ *)
(* Consistency tables: for checking consistency of module CRCs *)
type t = (string, Digest.t * string) Hashtbl.t
let create () = Hashtbl.create 13
let clear = Hashtbl.clear
exception Inconsistency of string * string * string
exception Not_available of string
let check tbl name crc source =
try
let (old_crc, old_source) = Hashtbl.find tbl name in
if crc <> old_crc then raise(Inconsistency(name, source, old_source))
with Not_found ->
Hashtbl.add tbl name (crc, source)
let check_noadd tbl name crc source =
try
let (old_crc, old_source) = Hashtbl.find tbl name in
if crc <> old_crc then raise(Inconsistency(name, source, old_source))
with Not_found ->
raise (Not_available name)
let set tbl name crc source = Hashtbl.add tbl name (crc, source)
let source tbl name = snd (Hashtbl.find tbl name)
let extract tbl =
Hashtbl.fold (fun name (crc, auth) accu -> (name, crc) :: accu) tbl []
let filter p tbl =
let to_remove = ref [] in
Hashtbl.iter
(fun name (crc, auth) ->
if not (p name) then to_remove := name :: !to_remove)
tbl;
List.iter
(fun name ->
while Hashtbl.mem tbl name do Hashtbl.remove tbl name done)
!to_remove
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