* http://cs.unibo.it/helm/.
*)
+(* $Id$ *)
(** PROFILING *)
| hd :: tl -> aux ([sep; hd] @ acc) tl
in
aux []
+
+let rec list_findopt f l =
+ let rec aux = function
+ | [] -> None
+ | x::tl ->
+ (match f x with
+ | None -> aux tl
+ | Some _ as rc -> rc)
+ in
+ aux l
(** {2 File predicates} *)
in
aux [] [path]
+let safe_remove fname = if Sys.file_exists fname then Sys.remove fname
+
+let is_dir_empty d =
+ let od = Unix.opendir d in
+ let rec aux () =
+ let name = Unix.readdir od in
+ if name <> "." && name <> ".." then false else aux () in
+ let res = try aux () with End_of_file -> true in
+ Unix.closedir od;
+ res
+
+let safe_rmdir d = try Unix.rmdir d with Unix.Unix_error _ -> ()
+
+let rec rmdir_descend d =
+ if is_dir_empty d then
+ begin
+ safe_rmdir d;
+ rmdir_descend (Filename.dirname d)
+ end
+
+
(** {2 Exception handling} *)
let finally at_end f arg =
at_end ();
res
+(** {2 Localized exceptions } *)
+
+exception Localized of Token.flocation * exn
+
+let loc_of_floc = function
+ | { Lexing.pos_cnum = loc_begin }, { Lexing.pos_cnum = loc_end } ->
+ (loc_begin, loc_end)
+
+let floc_of_loc (loc_begin, loc_end) =
+ let floc_begin =
+ { Lexing.pos_fname = ""; Lexing.pos_lnum = -1; Lexing.pos_bol = -1;
+ Lexing.pos_cnum = loc_begin }
+ in
+ let floc_end = { floc_begin with Lexing.pos_cnum = loc_end } in
+ (floc_begin, floc_end)
+
+let dummy_floc = floc_of_loc (-1, -1)
+
+let raise_localized_exception ~offset floc exn =
+ let (x, y) = loc_of_floc floc in
+ let x = offset + x in
+ let y = offset + y in
+ let flocb,floce = floc in
+ let floc =
+ { flocb with Lexing.pos_cnum = x }, { floce with Lexing.pos_cnum = y }
+ in
+ raise (Localized (floc, exn))