2 * Copyright 2012, INRIA
3 * Julia Lawall, Gilles Muller
4 * Copyright 2010-2011, INRIA, University of Copenhagen
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.
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.
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.
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/>.
22 * The authors reserve the right to distribute this or future versions of
23 * Coccinelle under other licenses.
27 module Ast
= Ast_cocci
28 module Past
= Ast_popl
30 (* --------------------------------------------------------------------- *)
32 let rec fvs_sequence = function
34 Common.union_set
(fvs_element elem
) (fvs_sequence seq
)
36 | Past.SExists
(var
,seq
) -> failwith
"not possible"
38 and fvs_term
= function
39 Past.Atomic
(term
) -> Ast.get_fvs term
40 | Past.IfThen
(test
,thn
,(afvs
,_
,_
,_
)) ->
42 (Common.union_set
(fvs_term test
) (fvs_term thn
))
43 | Past.TExists
(var
,term
) -> failwith
"not possible"
45 and fvs_element
= function
46 Past.Term
(term
,_
) -> fvs_term term
47 | Past.Or
(seq1
,seq2
) ->
48 Common.union_set
(fvs_sequence seq1
) (fvs_sequence seq2
)
49 | Past.DInfo
(dots
) -> fvs_dots dots
50 | Past.EExists
(var
,seq
) -> failwith
"not possible"
52 and fvs_dots
= function
54 | Past.Nest
(seq
) -> fvs_sequence seq
55 | Past.When
(dots
,seq
) -> Common.union_set
(fvs_dots dots
) (fvs_sequence seq
)
57 (* --------------------------------------------------------------------- *)
59 let inter_set l1 l2
= List.filter
(function l1e
-> List.mem l1e l2
) l1
61 let minus_set l1 l2
= List.filter
(function l1e
-> not
(List.mem l1e l2
)) l1
63 let rec quant_sequence bound
= function
65 let fe = fvs_element elem
in
66 let fs = fvs_sequence seq
in
67 let inter = inter_set fe fs in
68 let free = minus_set inter bound
in
69 let new_bound = free @ bound
in
70 List.fold_right
(function cur
-> function rest
-> Past.SExists
(cur
,rest
))
71 free (Past.Seq
(quant_element
new_bound elem
,
72 quant_sequence new_bound seq
))
73 | Past.Empty
-> Past.Empty
74 | Past.SExists
(var
,seq
) -> failwith
"not possible"
76 and quant_term bound
= function
77 (Past.Atomic
(term
)) as x
->
78 let free = minus_set (Ast.get_fvs term
) bound
in
79 List.fold_right
(function cur
-> function rest
-> Past.TExists
(cur
,rest
))
81 | Past.IfThen
(test
,thn
,((afvs
,_
,_
,_
) as aft
)) ->
82 let fts = fvs_term test
in
83 let fth = fvs_term thn
in
84 let inter = inter_set fts fth in
85 let free = minus_set inter bound
in
86 let new_bound = free @ bound
in
87 List.fold_right
(function cur
-> function rest
-> Past.TExists
(cur
,rest
))
88 free (Past.IfThen
(quant_term
new_bound test
,
89 quant_term
new_bound thn
,
91 | Past.TExists
(var
,term
) -> failwith
"not possible"
93 and quant_element bound
= function
95 Past.Term
(quant_term bound term
,dots_bef_aft bound ba
)
96 | Past.Or
(seq1
,seq2
) ->
97 Past.Or
(quant_sequence bound seq1
,quant_sequence bound seq2
)
99 Past.DInfo
(quant_dots bound dots
)
100 | Past.EExists
(var
,seq
) -> failwith
"not possible"
102 and dots_bef_aft bound
= function
103 Past.AddingBetweenDots
(brace_term
,n
) ->
104 Past.AddingBetweenDots
(quant_term bound brace_term
,n
)
105 | Past.DroppingBetweenDots
(brace_term
,n
) ->
106 Past.DroppingBetweenDots
(quant_term bound brace_term
,n
)
107 | Past.NoDots
-> Past.NoDots
109 and quant_dots bound
= function
110 Past.Dots
-> Past.Dots
111 | Past.Nest
(seq
) -> Past.Nest
(quant_sequence bound seq
)
112 | Past.When
(dots
,seq
) ->
113 Past.When
(quant_dots bound dots
, quant_sequence bound seq
)
115 (* --------------------------------------------------------------------- *)
117 let insert_quantifiers x
= quant_sequence [] x