Release coccinelle-0.2.4
[bpt/coccinelle.git] / popl09 / asttopopl.ml
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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(*
26 * Copyright 2010, INRIA, University of Copenhagen
27 * Julia Lawall, Rene Rydhof Hansen, Gilles Muller, Nicolas Palix
28 * Copyright 2005-2009, Ecole des Mines de Nantes, University of Copenhagen
29 * Yoann Padioleau, Julia Lawall, Rene Rydhof Hansen, Henrik Stuart, Gilles Muller, Nicolas Palix
30 * This file is part of Coccinelle.
31 *
32 * Coccinelle is free software: you can redistribute it and/or modify
33 * it under the terms of the GNU General Public License as published by
34 * the Free Software Foundation, according to version 2 of the License.
35 *
36 * Coccinelle is distributed in the hope that it will be useful,
37 * but WITHOUT ANY WARRANTY; without even the implied warranty of
38 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
39 * GNU General Public License for more details.
40 *
41 * You should have received a copy of the GNU General Public License
42 * along with Coccinelle. If not, see <http://www.gnu.org/licenses/>.
43 *
44 * The authors reserve the right to distribute this or future versions of
45 * Coccinelle under other licenses.
46 *)
47
48
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49module Ast = Ast_cocci
50module Past = Ast_popl
51
52(* --------------------------------------------------------------------- *)
53
54let term s inif =
55 let fail _ =
56 Pretty_print_cocci.statement "" s;
57 Format.print_newline();
58 failwith "complex statements not supported" in
59 match Ast.unwrap s with
60 Ast.Atomic(ast) ->
61 (match Ast.unwrap ast with
62 Ast.ExprStatement(_,_) -> Past.Atomic ast
63 | Ast.Exp(_) -> Past.Atomic ast
64 | Ast.Decl(_,_,_) -> Past.Atomic ast
65 | Ast.ReturnExpr(_,_,_) -> Past.Atomic ast
66 | Ast.MetaStmt(_,_,_,_) when inif -> Past.Atomic ast
67 | Ast.DisjRuleElem(_) -> Past.Atomic ast
68 | _ -> fail())
69 | _ -> fail()
70
71let rec stm s =
72 match Ast.unwrap s with
73 Ast.Atomic(ast) -> Past.Term(term s false,dots_bef_aft s false)
74 | Ast.IfThen(header,body,aft) ->
75 Past.Term(
76 Past.IfThen(Past.Atomic header,term body true,aft),
77 dots_bef_aft s true)
78 | Ast.Disj(stm1::stm2::stmts) ->
79 List.fold_left
80 (function prev ->
81 function cur ->
82 Past.Or(Past.Seq(prev,Past.Empty),stm_list cur))
83 (Past.Or(stm_list stm1,stm_list stm2)) stmts
84 | Ast.Dots(dots,whencodes,_,_) ->
85 Past.DInfo
86 (List.fold_left
87 (function prev ->
88 function
89 Ast.WhenNot(a) -> Past.When(prev,stm_list a)
90 | _ -> failwith "only when != supported")
91 Past.Dots whencodes)
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92 | Ast.Nest(starter,stmt_dots,ender,whencodes,false,_,_) ->
93 (match Ast.get_mcodekind starter with
94 Ast.MINUS _ -> failwith "only context nests supported"
95 | _ -> ());
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96 let nest = Past.Nest(stm_list stmt_dots) in
97 Past.DInfo
98 (List.fold_left
99 (function prev ->
100 function
101 Ast.WhenNot(a) -> Past.When(prev,stm_list a)
102 | _ -> failwith "only when != supported")
103 nest whencodes)
104 | _ ->
105 Pretty_print_cocci.statement "" s;
106 failwith "unsupported statement3"
107
108and dots_bef_aft s inif =
109 match Ast.get_dots_bef_aft s with
110 Ast.AddingBetweenDots (brace_term,n) ->
111 Past.AddingBetweenDots (term brace_term inif,n)
112 | Ast.DroppingBetweenDots (brace_term,n) ->
113 Past.DroppingBetweenDots (term brace_term inif,n)
114 | Ast.NoDots -> Past.NoDots
115
116and stm_list s =
117 match Ast.unwrap s with
118 Ast.DOTS(d) ->
119 List.fold_right
120 (function cur -> function rest -> Past.Seq(stm cur, rest))
121 d Past.Empty
122 | _ -> failwith "only DOTS handled"
123
124let top s =
125 match Ast.unwrap s with
126 Ast.CODE(stmt_dots) -> stm_list stmt_dots
127 | _ -> failwith "only CODE handled"