permit multiline comments and strings in macros
[bpt/coccinelle.git] / parsing_cocci / id_utils.ml
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f537ebc4 1(*
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2 * Copyright 2012, INRIA
3 * Julia Lawall, Gilles Muller
4 * Copyright 2010-2011, INRIA, University of Copenhagen
f537ebc4
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5 * Julia Lawall, Rene Rydhof Hansen, Gilles Muller, Nicolas Palix
6 * Copyright 2005-2009, Ecole des Mines de Nantes, University of Copenhagen
7 * Yoann Padioleau, Julia Lawall, Rene Rydhof Hansen, Henrik Stuart, Gilles Muller, Nicolas Palix
8 * This file is part of Coccinelle.
9 *
10 * Coccinelle is free software: you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation, according to version 2 of the License.
13 *
14 * Coccinelle is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with Coccinelle. If not, see <http://www.gnu.org/licenses/>.
21 *
22 * The authors reserve the right to distribute this or future versions of
23 * Coccinelle under other licenses.
24 *)
25
26
feec80c3 27# 0 "./id_utils.ml"
1eddfd50
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28(* evaluation of nested and and or using id-utils *)
29
30module GC = Get_constants2
31
32let evaluated = Hashtbl.create(100)
33
34exception Out
35
36let memoize exp vl = Hashtbl.add evaluated exp vl; vl
37
38let rec interpret dir exp =
39 let res = try Some (Hashtbl.find evaluated exp) with Not_found -> None in
40 match res with
41 Some x -> x
42 | None ->
43 memoize exp
44 (match exp with
45 GC.Elem oo ->
46 let cmd =
47 Printf.sprintf
48 "lid -f %s/.id-utils.index -l %s -S newline" dir oo in
49 Common.cmd_to_list cmd
50 | GC.And l ->
51 let rec loop = function
52 [] -> failwith "bad and"
53 | [x] -> interpret dir x
54 | x :: xs ->
55 (match interpret dir x with
56 [] -> raise Out
57 | resx ->
58 let resxs = loop xs in
59 Common.inter_set resx resxs) in
60 (try loop l with Out -> [])
61 | GC.Or l ->
62 List.fold_left
63 (function prev -> function cur ->
64 Common.union_set (interpret dir cur) prev)
65 [] l
66 | _ -> failwith "not possible")