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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 | ||
951c7801 C |
25 | module Ast = Ast_cocci |
26 | module Past = Ast_popl | |
27 | ||
28 | (* --------------------------------------------------------------------- *) | |
29 | ||
30 | let rec fvs_sequence = function | |
31 | Past.Seq(elem,seq) -> | |
32 | Common.union_set (fvs_element elem) (fvs_sequence seq) | |
33 | | Past.Empty -> [] | |
34 | | Past.SExists(var,seq) -> failwith "not possible" | |
35 | ||
36 | and fvs_element = function | |
37 | Past.Term(term) -> Ast.get_fvs term | |
38 | | Past.Or(seq1,seq2) -> | |
39 | Common.union_set (fvs_sequence seq1) (fvs_sequence seq2) | |
40 | | Past.DInfo(dots,seq_bef,seq_aft) -> | |
41 | List.fold_left | |
42 | (function prev -> | |
43 | function cur -> | |
44 | Common.union_set (fvs_element cur) prev) | |
45 | (fvs_dots dots) seq_bef | |
46 | | Past.EExists(var,seq) -> failwith "not possible" | |
47 | ||
48 | and fvs_dots = function | |
49 | Past.Dots -> [] | |
50 | | Past.Nest(seq) -> fvs_sequence seq | |
51 | | Past.When(dots,seq) -> Common.union_set (fvs_dots dots) (fvs_sequence seq) | |
52 | | Past.DExists(var,dots) -> failwith "not possible" | |
53 | ||
54 | (* --------------------------------------------------------------------- *) | |
55 | ||
56 | let rec quant_sequence bound = function | |
57 | Past.Seq(elem,seq) -> | |
58 | let fe = fvs_element elem in | |
59 | let fs = fvs_sequence seq in | |
60 | let inter = Common.inter_set fe fs in | |
61 | let free = Common.minus_set inter bound in | |
62 | let new_bound = free @ bound in | |
63 | List.fold_right (function cur -> function rest -> Past.SExists(cur,rest)) | |
64 | free (Past.Seq(quant_element new_bound elem, | |
65 | quant_sequence new_bound seq)) | |
66 | | Past.Empty -> Past.Empty | |
67 | | Past.SExists(var,seq) -> failwith "not possible" | |
68 | ||
69 | and quant_element bound = function | |
70 | Past.Term(term) as x -> | |
71 | let free = Common.minus_set (fvs_element x) bound in | |
72 | List.fold_right (function cur -> function rest -> Past.EExists(cur,rest)) | |
73 | free x | |
74 | | Past.Or(seq1,seq2) -> | |
75 | Past.Or(quant_sequence bound seq1,quant_sequence bound seq2) | |
76 | | Past.DInfo(dots,seq_bef,seq_aft) -> | |
77 | Past.DInfo(quant_dots bound dots,seq_bef, | |
78 | List.map (quant_element bound) seq_aft) | |
79 | | Past.EExists(var,seq) -> failwith "not possible" | |
80 | ||
81 | and quant_dots bound = function | |
82 | Past.Dots -> Past.Dots | |
83 | | Past.Nest(seq) -> Past.Nest(quant_sequence bound seq) | |
84 | | Past.When(dots,seq) -> | |
85 | let fd = fvs_dots dots in | |
86 | let fs = fvs_sequence seq in | |
87 | let inter = Common.inter_set fd fs in | |
88 | let free = Common.minus_set inter bound in | |
89 | let new_bound = free @ bound in | |
90 | List.fold_right (function cur -> function rest -> Past.DExists(cur,rest)) | |
91 | free (Past.When(quant_dots new_bound dots, | |
92 | quant_sequence new_bound seq)) | |
93 | | Past.DExists(var,dots) -> failwith "not possible" | |
94 | ||
95 | (* --------------------------------------------------------------------- *) | |
96 | ||
97 | let insert_quantifiers x = quant_sequence [] x |