globals/iteration.ml

   1 (*
   2  * Copyright 2010, INRIA, University of Copenhagen
   3  * Julia Lawall, Rene Rydhof Hansen, Gilles Muller, Nicolas Palix
   4  * Copyright 2005-2009, Ecole des Mines de Nantes, University of Copenhagen
   5  * Yoann Padioleau, Julia Lawall, Rene Rydhof Hansen, Henrik Stuart, Gilles Muller, Nicolas Palix
   6  * This file is part of Coccinelle.
   7  *
   8  * Coccinelle is free software: you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation, according to version 2 of the License.
  11  *
  12  * Coccinelle is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with Coccinelle.  If not, see <http://www.gnu.org/licenses/>.
  19  *
  20  * The authors reserve the right to distribute this or future versions of
  21  * Coccinelle under other licenses.
  22  *)
  23
  24
  25 type init_info = (string (* language *) * string (* rule name *)) *
  26       string list (* defined virtual rules *)
  27
  28 let initialization_stack = ref ([] : init_info list)
  29
  30 (* ----------------------------------------------------------------------- *)
  31
  32 let base_file_list = ref ([] : string list)
  33 let parsed_virtual_rules = ref ([] : string list)
  34 let parsed_virtual_identifiers = ref ([] : string list)
  35
  36 (* ----------------------------------------------------------------------- *)
  37
  38 type pending_info = string list (* files to treat *) *
  39       string list * (* defined virtual rules *)
  40       (string * string) list (* virtual identifiers *)
  41
  42 let pending_instances_file = ref ([] : pending_info list)
  43 let pending_instances_dir = ref ([] : pending_info list)
  44
  45 let add_pending_instance (files,a,b) =
  46   match files with
  47     None ->
  48       pending_instances_dir := (!base_file_list,a,b) :: !pending_instances_dir
  49   | Some f ->
  50       (* if one specifies a file, it is assumed to be the current one *)
  51       (* put at the end of the list of information about this file *)
  52       let rec loop = function
  53           [] -> [(f,a,b)]
  54         | ((f1,a1,b1) as front)::rest ->
  55             if f = f1
  56             then front :: (loop rest)
  57             else (f,a,b) :: front :: rest in
  58       pending_instances_file := loop !pending_instances_file
  59
  60 let get_pending_instance _ =
  61   (if (List.length !pending_instances_file) > 0 or
  62     (List.length !pending_instances_dir) > 0
  63   then
  64     Common.pr2
  65       (Printf.sprintf
  66          "%d pending new file instances\n%d pending original file instances\n"
  67          (List.length !pending_instances_file)
  68          (List.length !pending_instances_dir)));
  69   match !pending_instances_file with
  70     [] ->
  71       (match !pending_instances_dir with
  72         [] -> None
  73       | x::xs ->
  74           pending_instances_dir := xs;
  75           Some x)
  76   | x::xs ->
  77       pending_instances_file := xs;
  78       Some x
  79
  80 (* ----------------------------------------------------------------------- *)
  81
  82 let check_virtual_rule r =
  83   if not (List.mem r !parsed_virtual_rules)
  84   then failwith ("unknown virtual rule "^r)
  85
  86 let check_virtual_ident i =
  87   if not (List.mem i !parsed_virtual_identifiers)
  88   then failwith ("unknown virtual rule "^i)