67 lines
2.4 KiB
OCaml
67 lines
2.4 KiB
OCaml
(**************************************************************************)
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(* *)
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(* OCaml *)
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(* *)
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(* Xavier Leroy, projet Cristal, INRIA Rocquencourt *)
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(* *)
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(* Copyright 2002 Institut National de Recherche en Informatique et *)
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(* en Automatique. *)
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(* *)
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(* All rights reserved. This file is distributed under the terms of *)
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(* the GNU Lesser General Public License version 2.1, with the *)
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(* special exception on linking described in the file LICENSE. *)
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(* *)
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(**************************************************************************)
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(* Consistency tables: for checking consistency of module CRCs *)
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type t = (string, Digest.t * string) Hashtbl.t
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let create () = Hashtbl.create 13
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let clear = Hashtbl.clear
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exception Inconsistency of string * string * string
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exception Not_available of string
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let check tbl name crc source =
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try
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let (old_crc, old_source) = Hashtbl.find tbl name in
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if crc <> old_crc then raise(Inconsistency(name, source, old_source))
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with Not_found ->
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Hashtbl.add tbl name (crc, source)
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let check_noadd tbl name crc source =
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try
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let (old_crc, old_source) = Hashtbl.find tbl name in
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if crc <> old_crc then raise(Inconsistency(name, source, old_source))
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with Not_found ->
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raise (Not_available name)
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let set tbl name crc source = Hashtbl.add tbl name (crc, source)
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let source tbl name = snd (Hashtbl.find tbl name)
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let extract l tbl =
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let l = List.sort_uniq String.compare l in
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List.fold_left
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(fun assc name ->
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try
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let (crc, _) = Hashtbl.find tbl name in
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(name, Some crc) :: assc
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with Not_found ->
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(name, None) :: assc)
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[] l
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let filter p tbl =
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let to_remove = ref [] in
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Hashtbl.iter
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(fun name _ ->
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if not (p name) then to_remove := name :: !to_remove)
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tbl;
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List.iter
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(fun name ->
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while Hashtbl.mem tbl name do Hashtbl.remove tbl name done)
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!to_remove
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