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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 | ||
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25 | module Ast = Ast_cocci |
26 | module Ast0 = Ast0_cocci | |
27 | module V0 = Visitor_ast0 | |
b1b2de81 | 28 | module VT0 = Visitor_ast0_types |
34e49164 C |
29 | |
30 | (* call set_test_pos on test expressions *) | |
31 | ||
32 | (* The goal of this is to identify test expressions in the SmPL file, so that | |
33 | isomorphisms like X != NULL => X are only applied in a test expression context. | |
34 | ||
35 | There is a related check in cocci_vs_c3.ml that in x || ..., a match | |
36 | without the || is only accepted in a test expression context. This uses | |
37 | the annotations in the C file. *) | |
38 | ||
39 | let rec process_exp e = | |
faf9a90c C |
40 | let e = Ast0.set_test_pos e in(* allow test isos *) |
41 | let e = Ast0.set_test_exp e in(* require that a test expression is matched *) | |
34e49164 | 42 | match Ast0.unwrap e with |
faf9a90c C |
43 | Ast0.Paren(lp,e1,rp) -> |
44 | Ast0.rewrap e (Ast0.Paren(lp,process_exp e1,rp)) | |
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45 | | _ -> e |
46 | ||
47 | let set_test_poss = | |
34e49164 C |
48 | let expression r k e = |
49 | let e = k e in | |
50 | match Ast0.unwrap e with | |
51 | Ast0.CondExpr(e1,q,e2,c,e3) -> | |
52 | Ast0.rewrap e (Ast0.CondExpr(process_exp e1,q,e2,c,e3)) | |
53 | | Ast0.Binary(e1,op,e2) -> | |
54 | (match Ast0.unwrap_mcode op with | |
55 | Ast.Logical(Ast.AndLog) | Ast.Logical(Ast.OrLog) -> | |
56 | Ast0.rewrap e (Ast0.Binary(process_exp e1,op,process_exp e2)) | |
57 | | _ -> e) | |
58 | | Ast0.Unary(e1,op) -> | |
59 | (match Ast0.unwrap_mcode op with | |
60 | Ast.Not -> Ast0.rewrap e (Ast0.Unary(process_exp e1,op)) | |
61 | | _ -> e) | |
62 | | _ -> e in | |
63 | ||
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64 | let process_wc = function |
65 | Ast0.WhenNotTrue(e) -> Ast0.WhenNotTrue(process_exp e) | |
66 | | Ast0.WhenNotFalse(e) -> Ast0.WhenNotFalse(process_exp e) | |
67 | | wc -> wc in | |
68 | ||
34e49164 C |
69 | let statement r k s = |
70 | let s = k s in | |
71 | match Ast0.unwrap s with | |
72 | Ast0.IfThen(i,lp,e,rp,s1,aft) -> | |
73 | Ast0.rewrap s (Ast0.IfThen(i,lp,process_exp e,rp,s1,aft)) | |
74 | | Ast0.IfThenElse(i,lp,e,rp,s1,e1,s2,aft) -> | |
75 | Ast0.rewrap s (Ast0.IfThenElse(i,lp,process_exp e,rp,s1,e1,s2,aft)) | |
76 | | Ast0.While(i,lp,e,rp,s1,aft) -> | |
77 | Ast0.rewrap s (Ast0.While(i,lp,process_exp e,rp,s1,aft)) | |
78 | | Ast0.Do(d,s1,w,lp,e,rp,sc) -> | |
79 | Ast0.rewrap s (Ast0.Do(d,s1,w,lp,process_exp e,rp,sc)) | |
80 | | Ast0.For(f,lp,e1,sc1,Some e2,sc2,e3,rp,s1,aft) -> | |
81 | Ast0.rewrap s | |
82 | (Ast0.For(f,lp,e1,sc1,Some (process_exp e2),sc2,e3,rp,s1,aft)) | |
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83 | | Ast0.Dots(d,wc) -> |
84 | Ast0.rewrap s (Ast0.Dots(d,List.map process_wc wc)) | |
85 | | Ast0.Nest(l,s1,r,wc,m) -> | |
86 | Ast0.rewrap s (Ast0.Nest(l,s1,r,List.map process_wc wc,m)) | |
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87 | | _ -> s in |
88 | ||
89 | V0.rebuilder | |
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90 | {V0.rebuilder_functions with |
91 | VT0.rebuilder_exprfn = expression; VT0.rebuilder_stmtfn = statement} | |
34e49164 | 92 | |
b1b2de81 | 93 | let process = List.map set_test_poss.VT0.rebuilder_rec_top_level |
34e49164 | 94 | |
b1b2de81 | 95 | let process_anything = set_test_poss.VT0.rebuilder_rec_anything |
34e49164 | 96 |