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9bc82bae C |
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 | ||
34e49164 C |
25 | open Common |
26 | ||
27 | module F = Control_flow_c | |
28 | ||
29 | (*****************************************************************************) | |
ae4735db | 30 | (* The functor argument *) |
34e49164 C |
31 | (*****************************************************************************) |
32 | ||
33 | (* info passed recursively in monad in addition to binding *) | |
ae4735db | 34 | type xinfo = { |
34e49164 C |
35 | optional_storage_iso : bool; |
36 | optional_qualifier_iso : bool; | |
37 | value_format_iso : bool; | |
38 | current_rule_name : string; (* used for errors *) | |
708f4980 | 39 | index : int list (* witness tree indices *) |
34e49164 C |
40 | } |
41 | ||
42 | module XTRANS = struct | |
43 | ||
44 | (* ------------------------------------------------------------------------*) | |
ae4735db | 45 | (* Combinators history *) |
34e49164 C |
46 | (* ------------------------------------------------------------------------*) |
47 | (* | |
ae4735db C |
48 | * version0: |
49 | * type ('a, 'b) transformer = | |
34e49164 | 50 | * 'a -> 'b -> Lib_engine.metavars_binding -> 'b |
ae4735db C |
51 | * exception NoMatch |
52 | * | |
34e49164 | 53 | * version1: |
ae4735db | 54 | * type ('a, 'b) transformer = |
34e49164 | 55 | * 'a -> 'b -> Lib_engine.metavars_binding -> 'b option |
ae4735db C |
56 | * use an exception monad |
57 | * | |
34e49164 C |
58 | * version2: |
59 | * type tin = Lib_engine.metavars_binding | |
60 | *) | |
61 | ||
62 | (* ------------------------------------------------------------------------*) | |
ae4735db | 63 | (* Standard type and operators *) |
34e49164 C |
64 | (* ------------------------------------------------------------------------*) |
65 | ||
ae4735db | 66 | type tin = { |
34e49164 C |
67 | extra: xinfo; |
68 | binding: Lib_engine.metavars_binding; | |
1be43e12 | 69 | binding0: Lib_engine.metavars_binding; (* inherited variable *) |
34e49164 C |
70 | } |
71 | type 'x tout = 'x option | |
72 | ||
73 | type ('a, 'b) matcher = 'a -> 'b -> tin -> ('a * 'b) tout | |
74 | ||
ae4735db | 75 | let (>>=) m f = fun tin -> |
34e49164 C |
76 | match m tin with |
77 | | None -> None | |
78 | | Some (a,b) -> f a b tin | |
79 | ||
ae4735db | 80 | let return = fun x -> fun tin -> |
34e49164 C |
81 | Some x |
82 | ||
83 | (* can have fail in transform now that the process is deterministic ? *) | |
ae4735db | 84 | let fail = fun tin -> |
34e49164 C |
85 | None |
86 | ||
ae4735db | 87 | let (>||>) m1 m2 = fun tin -> |
34e49164 C |
88 | match m1 tin with |
89 | | None -> m2 tin | |
90 | | Some x -> Some x (* stop as soon as have found something *) | |
91 | ||
92 | let (>|+|>) m1 m2 = m1 >||> m2 | |
93 | ||
ae4735db | 94 | let (>&&>) f m = fun tin -> |
34e49164 C |
95 | if f tin then m tin else fail tin |
96 | ||
ae4735db | 97 | let optional_storage_flag f = fun tin -> |
34e49164 C |
98 | f (tin.extra.optional_storage_iso) tin |
99 | ||
ae4735db | 100 | let optional_qualifier_flag f = fun tin -> |
34e49164 C |
101 | f (tin.extra.optional_qualifier_iso) tin |
102 | ||
ae4735db | 103 | let value_format_flag f = fun tin -> |
34e49164 C |
104 | f (tin.extra.value_format_iso) tin |
105 | ||
485bce71 | 106 | let mode = Cocci_vs_c.TransformMode |
34e49164 C |
107 | |
108 | (* ------------------------------------------------------------------------*) | |
ae4735db | 109 | (* Exp *) |
34e49164 | 110 | (* ------------------------------------------------------------------------*) |
ae4735db | 111 | let cocciExp = fun expf expa node -> fun tin -> |
34e49164 | 112 | |
ae4735db C |
113 | let bigf = { |
114 | Visitor_c.default_visitor_c_s with | |
34e49164 C |
115 | Visitor_c.kexpr_s = (fun (k, bigf) expb -> |
116 | match expf expa expb tin with | |
117 | | None -> (* failed *) k expb | |
118 | | Some (x, expb) -> expb); | |
119 | } | |
120 | in | |
121 | Some (expa, Visitor_c.vk_node_s bigf node) | |
122 | ||
123 | ||
124 | (* same as cocciExp, but for expressions in an expression, not expressions | |
125 | in a node *) | |
ae4735db | 126 | let cocciExpExp = fun expf expa expb -> fun tin -> |
34e49164 | 127 | |
ae4735db C |
128 | let bigf = { |
129 | Visitor_c.default_visitor_c_s with | |
34e49164 C |
130 | Visitor_c.kexpr_s = (fun (k, bigf) expb -> |
131 | match expf expa expb tin with | |
132 | | None -> (* failed *) k expb | |
133 | | Some (x, expb) -> expb); | |
134 | } | |
135 | in | |
136 | Some (expa, Visitor_c.vk_expr_s bigf expb) | |
137 | ||
138 | ||
ae4735db | 139 | let cocciTy = fun expf expa node -> fun tin -> |
34e49164 | 140 | |
ae4735db C |
141 | let bigf = { |
142 | Visitor_c.default_visitor_c_s with | |
34e49164 C |
143 | Visitor_c.ktype_s = (fun (k, bigf) expb -> |
144 | match expf expa expb tin with | |
145 | | None -> (* failed *) k expb | |
146 | | Some (x, expb) -> expb); | |
147 | } | |
148 | in | |
149 | Some (expa, Visitor_c.vk_node_s bigf node) | |
150 | ||
ae4735db | 151 | let cocciInit = fun expf expa node -> fun tin -> |
1be43e12 | 152 | |
ae4735db C |
153 | let bigf = { |
154 | Visitor_c.default_visitor_c_s with | |
1be43e12 C |
155 | Visitor_c.kini_s = (fun (k, bigf) expb -> |
156 | match expf expa expb tin with | |
157 | | None -> (* failed *) k expb | |
158 | | Some (x, expb) -> expb); | |
159 | } | |
160 | in | |
161 | Some (expa, Visitor_c.vk_node_s bigf node) | |
162 | ||
34e49164 C |
163 | |
164 | (* ------------------------------------------------------------------------*) | |
ae4735db | 165 | (* Tokens *) |
34e49164 | 166 | (* ------------------------------------------------------------------------*) |
ae4735db | 167 | let check_pos info mck pos = |
34e49164 | 168 | match mck with |
951c7801 | 169 | | Ast_cocci.PLUS _ -> raise Impossible |
708f4980 | 170 | | Ast_cocci.CONTEXT (Ast_cocci.FixPos (i1,i2),_) |
ae4735db | 171 | | Ast_cocci.MINUS (Ast_cocci.FixPos (i1,i2),_,_,_) -> |
34e49164 | 172 | pos <= i2 && pos >= i1 |
708f4980 | 173 | | Ast_cocci.CONTEXT (Ast_cocci.DontCarePos,_) |
ae4735db | 174 | | Ast_cocci.MINUS (Ast_cocci.DontCarePos,_,_,_) -> |
34e49164 C |
175 | true |
176 | | _ -> | |
177 | match info with | |
178 | Some info -> | |
179 | failwith | |
180 | (Printf.sprintf | |
0708f913 | 181 | "weird: dont have position info for the mcodekind in line %d column %d" |
34e49164 C |
182 | info.Ast_cocci.line info.Ast_cocci.column) |
183 | | None -> | |
0708f913 | 184 | failwith "weird: dont have position info for the mcodekind" |
34e49164 C |
185 | |
186 | ||
ae4735db | 187 | let tag_with_mck mck ib = fun tin -> |
34e49164 C |
188 | |
189 | let cocciinforef = ib.Ast_c.cocci_tag in | |
951c7801 | 190 | let (oldmcode, oldenvs) = Ast_c.mcode_and_env_of_cocciref cocciinforef in |
34e49164 C |
191 | |
192 | let mck = | |
ae4735db | 193 | (* coccionly: |
34e49164 C |
194 | if !Flag_parsing_cocci.sgrep_mode |
195 | then Sgrep.process_sgrep ib mck | |
ae4735db | 196 | else |
485bce71 | 197 | *) |
ae4735db | 198 | mck |
34e49164 C |
199 | in |
200 | (match mck, Ast_c.pinfo_of_info ib with | |
201 | | _, Ast_c.AbstractLineTok _ -> raise Impossible | |
ae4735db | 202 | | Ast_cocci.MINUS(_), Ast_c.ExpandedTok _ -> |
34e49164 C |
203 | failwith ("try to delete an expanded token: " ^ (Ast_c.str_of_info ib)) |
204 | | _ -> () | |
205 | ); | |
206 | ||
951c7801 C |
207 | let many_count = function |
208 | Ast_cocci.BEFORE(_,Ast_cocci.MANY) | Ast_cocci.AFTER(_,Ast_cocci.MANY) | |
209 | | Ast_cocci.BEFOREAFTER(_,_,Ast_cocci.MANY) -> true | |
210 | | _ -> false in | |
211 | ||
212 | (match (oldmcode,mck) with | |
213 | | (Ast_cocci.CONTEXT(_,Ast_cocci.NOTHING), _) -> | |
214 | (* nothing there, so take the new stuff *) | |
708f4980 C |
215 | let update_inst inst = function |
216 | Ast_cocci.MINUS (pos,_,adj,any_xxs) -> | |
217 | Ast_cocci.MINUS (pos,inst,adj,any_xxs) | |
218 | | mck -> mck in | |
951c7801 C |
219 | cocciinforef := Some (update_inst tin.extra.index mck, [tin.binding]) |
220 | | (_, Ast_cocci.CONTEXT(_,Ast_cocci.NOTHING)) -> | |
221 | (* can this case occur? stay with the old stuff *) | |
222 | () | |
708f4980 C |
223 | | (Ast_cocci.MINUS(old_pos,old_inst,old_adj,[]), |
224 | Ast_cocci.MINUS(new_pos,new_inst,new_adj,[])) | |
951c7801 C |
225 | when old_pos = new_pos && |
226 | (List.mem tin.binding oldenvs or !Flag.sgrep_mode2) | |
708f4980 C |
227 | (* no way to combine adjacency information, just drop one *) |
228 | -> | |
229 | cocciinforef := Some | |
230 | (Ast_cocci.MINUS | |
231 | (old_pos,Common.union_set old_inst new_inst,old_adj,[]), | |
951c7801 | 232 | [tin.binding]); |
708f4980 | 233 | (if !Flag_matcher.show_misc |
951c7801 C |
234 | then pr2 "already tagged but only removed, so safe") |
235 | ||
236 | | (Ast_cocci.CONTEXT(old_pos,old_modif), | |
237 | Ast_cocci.CONTEXT(new_pos,new_modif)) | |
238 | when old_pos = new_pos && | |
239 | old_modif = new_modif && many_count old_modif -> | |
240 | (* iteration only allowed on context; no way to replace something | |
241 | more than once; now no need for iterable; just check a flag *) | |
242 | ||
243 | cocciinforef := | |
244 | Some(Ast_cocci.CONTEXT(old_pos,old_modif),tin.binding::oldenvs) | |
708f4980 | 245 | |
ae4735db C |
246 | | _ -> |
247 | (* coccionly: | |
34e49164 C |
248 | if !Flag.sgrep_mode2 |
249 | then ib (* safe *) | |
ae4735db | 250 | else |
485bce71 C |
251 | *) |
252 | begin | |
ae4735db | 253 | (* coccionly: |
708f4980 C |
254 | pad: if dont want cocci write: |
255 | failwith | |
b1b2de81 C |
256 | (match Ast_c.pinfo_of_info ib with |
257 | Ast_c.FakeTok _ -> "already tagged fake token" | |
708f4980 C |
258 | *) |
259 | let pm str mcode env = | |
260 | Printf.sprintf | |
951c7801 | 261 | "%s modification:\n%s\nAccording to environment %d:\n%s\n" |
708f4980 C |
262 | str |
263 | (Common.format_to_string | |
264 | (function _ -> | |
265 | Pretty_print_cocci.print_mcodekind mcode)) | |
951c7801 | 266 | (List.length env) |
708f4980 C |
267 | (String.concat "\n" |
268 | (List.map | |
269 | (function ((r,vr),vl) -> | |
270 | Printf.sprintf " %s.%s -> %s" r vr | |
271 | (Common.format_to_string | |
272 | (function _ -> | |
273 | Pretty_print_engine.pp_binding_kind vl))) | |
274 | env)) in | |
275 | flush stdout; flush stderr; | |
276 | Common.pr2 | |
951c7801 C |
277 | ("\n"^ (String.concat "\n" |
278 | (List.map (pm "previous" oldmcode) oldenvs)) ^ "\n" | |
279 | ^ (pm "current" mck tin.binding)); | |
708f4980 C |
280 | failwith |
281 | (match Ast_c.pinfo_of_info ib with | |
282 | Ast_c.FakeTok _ -> | |
283 | Common.sprintf "%s: already tagged fake token\n" | |
284 | tin.extra.current_rule_name | |
b1b2de81 | 285 | | _ -> |
708f4980 C |
286 | Printf.sprintf |
287 | "%s: already tagged token:\nC code context\n%s" | |
b1b2de81 C |
288 | tin.extra.current_rule_name |
289 | (Common.error_message (Ast_c.file_of_info ib) | |
290 | (Ast_c.str_of_info ib, Ast_c.opos_of_info ib))) | |
951c7801 C |
291 | end); |
292 | ib | |
34e49164 | 293 | |
ae4735db | 294 | let tokenf ia ib = fun tin -> |
34e49164 C |
295 | let (_,i,mck,_) = ia in |
296 | let pos = Ast_c.info_to_fixpos ib in | |
ae4735db | 297 | if check_pos (Some i) mck pos |
34e49164 C |
298 | then return (ia, tag_with_mck mck ib tin) tin |
299 | else fail tin | |
300 | ||
ae4735db | 301 | let tokenf_mck mck ib = fun tin -> |
34e49164 | 302 | let pos = Ast_c.info_to_fixpos ib in |
ae4735db | 303 | if check_pos None mck pos |
34e49164 C |
304 | then return (mck, tag_with_mck mck ib tin) tin |
305 | else fail tin | |
306 | ||
307 | ||
308 | (* ------------------------------------------------------------------------*) | |
ae4735db | 309 | (* Distribute mcode *) |
34e49164 C |
310 | (* ------------------------------------------------------------------------*) |
311 | ||
312 | (* When in the SP we attach something to a metavariable, or delete it, as in | |
313 | * - S | |
314 | * + foo(); | |
ae4735db C |
315 | * we have to minusize all the token that compose S in the C code, and |
316 | * attach the 'foo();' to the right token, the one at the very right. | |
34e49164 C |
317 | *) |
318 | ||
ae4735db | 319 | type 'a distributer = |
34e49164 C |
320 | (Ast_c.info -> Ast_c.info) * (* what to do on left *) |
321 | (Ast_c.info -> Ast_c.info) * (* what to do on middle *) | |
322 | (Ast_c.info -> Ast_c.info) * (* what to do on right *) | |
323 | (Ast_c.info -> Ast_c.info) -> (* what to do on both *) | |
324 | 'a -> 'a | |
325 | ||
326 | let distribute_mck mcodekind distributef expr tin = | |
327 | match mcodekind with | |
ae4735db | 328 | | Ast_cocci.MINUS (pos,_,adj,any_xxs) -> |
708f4980 | 329 | let inst = tin.extra.index in |
34e49164 | 330 | distributef ( |
708f4980 C |
331 | (fun ib -> |
332 | tag_with_mck (Ast_cocci.MINUS (pos,inst,adj,any_xxs)) ib tin), | |
333 | (fun ib -> | |
334 | tag_with_mck (Ast_cocci.MINUS (pos,inst,adj,[])) ib tin), | |
335 | (fun ib -> | |
336 | tag_with_mck (Ast_cocci.MINUS (pos,inst,adj,[])) ib tin), | |
337 | (fun ib -> | |
338 | tag_with_mck (Ast_cocci.MINUS (pos,inst,adj,any_xxs)) ib tin) | |
34e49164 | 339 | ) expr |
ae4735db | 340 | | Ast_cocci.CONTEXT (pos,any_befaft) -> |
34e49164 C |
341 | (match any_befaft with |
342 | | Ast_cocci.NOTHING -> expr | |
ae4735db C |
343 | |
344 | | Ast_cocci.BEFORE (xxs,c) -> | |
34e49164 | 345 | distributef ( |
ae4735db | 346 | (fun ib -> tag_with_mck |
951c7801 | 347 | (Ast_cocci.CONTEXT (pos,Ast_cocci.BEFORE (xxs,c))) ib tin), |
ae4735db C |
348 | (fun x -> x), |
349 | (fun x -> x), | |
350 | (fun ib -> tag_with_mck | |
951c7801 | 351 | (Ast_cocci.CONTEXT (pos,Ast_cocci.BEFORE (xxs,c))) ib tin) |
34e49164 | 352 | ) expr |
ae4735db | 353 | | Ast_cocci.AFTER (xxs,c) -> |
34e49164 | 354 | distributef ( |
ae4735db C |
355 | (fun x -> x), |
356 | (fun x -> x), | |
357 | (fun ib -> tag_with_mck | |
951c7801 | 358 | (Ast_cocci.CONTEXT (pos,Ast_cocci.AFTER (xxs,c))) ib tin), |
ae4735db | 359 | (fun ib -> tag_with_mck |
951c7801 | 360 | (Ast_cocci.CONTEXT (pos,Ast_cocci.AFTER (xxs,c))) ib tin) |
34e49164 C |
361 | ) expr |
362 | ||
ae4735db | 363 | | Ast_cocci.BEFOREAFTER (xxs, yys, c) -> |
34e49164 | 364 | distributef ( |
ae4735db | 365 | (fun ib -> tag_with_mck |
951c7801 | 366 | (Ast_cocci.CONTEXT (pos,Ast_cocci.BEFORE (xxs,c))) ib tin), |
ae4735db C |
367 | (fun x -> x), |
368 | (fun ib -> tag_with_mck | |
951c7801 | 369 | (Ast_cocci.CONTEXT (pos,Ast_cocci.AFTER (yys,c))) ib tin), |
ae4735db | 370 | (fun ib -> tag_with_mck |
951c7801 | 371 | (Ast_cocci.CONTEXT (pos,Ast_cocci.BEFOREAFTER (xxs,yys,c))) |
34e49164 C |
372 | ib tin) |
373 | ) expr | |
374 | ||
375 | ) | |
951c7801 | 376 | | Ast_cocci.PLUS _ -> raise Impossible |
34e49164 C |
377 | |
378 | ||
379 | (* use new strategy, collect ii, sort, recollect and tag *) | |
380 | ||
ae4735db C |
381 | let mk_bigf (maxpos, minpos) (lop,mop,rop,bop) = |
382 | let bigf = { | |
34e49164 | 383 | Visitor_c.default_visitor_c_s with |
ae4735db | 384 | Visitor_c.kinfo_s = (fun (k,bigf) i -> |
34e49164 C |
385 | let pos = Ast_c.info_to_fixpos i in |
386 | match () with | |
387 | | _ when Ast_cocci.equal_pos pos maxpos && | |
388 | Ast_cocci.equal_pos pos minpos -> bop i | |
389 | | _ when Ast_cocci.equal_pos pos maxpos -> rop i | |
390 | | _ when Ast_cocci.equal_pos pos minpos -> lop i | |
391 | | _ -> mop i | |
392 | ) | |
393 | } in | |
394 | bigf | |
395 | ||
396 | let distribute_mck_expr (maxpos, minpos) = fun (lop,mop,rop,bop) -> fun x -> | |
397 | Visitor_c.vk_expr_s (mk_bigf (maxpos, minpos) (lop,mop,rop,bop)) x | |
398 | ||
399 | let distribute_mck_args (maxpos, minpos) = fun (lop,mop,rop,bop) -> fun x -> | |
400 | Visitor_c.vk_args_splitted_s (mk_bigf (maxpos, minpos) (lop,mop,rop,bop)) x | |
401 | ||
402 | let distribute_mck_type (maxpos, minpos) = fun (lop,mop,rop,bop) -> fun x -> | |
403 | Visitor_c.vk_type_s (mk_bigf (maxpos, minpos) (lop,mop,rop,bop)) x | |
404 | ||
413ffc02 C |
405 | let distribute_mck_decl (maxpos, minpos) = fun (lop,mop,rop,bop) -> fun x -> |
406 | Visitor_c.vk_decl_s (mk_bigf (maxpos, minpos) (lop,mop,rop,bop)) x | |
407 | ||
408 | let distribute_mck_field (maxpos, minpos) = fun (lop,mop,rop,bop) -> fun x -> | |
409 | Visitor_c.vk_struct_field_s (mk_bigf (maxpos, minpos) (lop,mop,rop,bop)) x | |
410 | ||
34e49164 C |
411 | let distribute_mck_ini (maxpos, minpos) = fun (lop,mop,rop,bop) -> fun x -> |
412 | Visitor_c.vk_ini_s (mk_bigf (maxpos, minpos) (lop,mop,rop,bop)) x | |
413 | ||
c491d8ee C |
414 | let distribute_mck_inis (maxpos, minpos) = fun (lop,mop,rop,bop) -> fun x -> |
415 | Visitor_c.vk_inis_splitted_s (mk_bigf (maxpos, minpos) (lop,mop,rop,bop)) x | |
416 | ||
34e49164 C |
417 | let distribute_mck_param (maxpos, minpos) = fun (lop,mop,rop,bop) -> fun x -> |
418 | Visitor_c.vk_param_s (mk_bigf (maxpos, minpos) (lop,mop,rop,bop)) x | |
419 | ||
420 | let distribute_mck_params (maxpos, minpos) = fun (lop,mop,rop,bop) ->fun x -> | |
421 | Visitor_c.vk_params_splitted_s (mk_bigf (maxpos, minpos) (lop,mop,rop,bop)) | |
422 | x | |
423 | ||
424 | let distribute_mck_node (maxpos, minpos) = fun (lop,mop,rop,bop) ->fun x -> | |
425 | Visitor_c.vk_node_s (mk_bigf (maxpos, minpos) (lop,mop,rop,bop)) | |
426 | x | |
427 | ||
c491d8ee C |
428 | let distribute_mck_enum_fields (maxpos, minpos) = |
429 | fun (lop,mop,rop,bop) ->fun x -> | |
430 | Visitor_c.vk_enum_fields_splitted_s | |
431 | (mk_bigf (maxpos, minpos) (lop,mop,rop,bop)) | |
432 | x | |
433 | ||
ae4735db | 434 | let distribute_mck_struct_fields (maxpos, minpos) = |
34e49164 C |
435 | fun (lop,mop,rop,bop) ->fun x -> |
436 | Visitor_c.vk_struct_fields_s (mk_bigf (maxpos, minpos) (lop,mop,rop,bop)) | |
437 | x | |
438 | ||
ae4735db | 439 | let distribute_mck_cst (maxpos, minpos) = |
34e49164 C |
440 | fun (lop,mop,rop,bop) ->fun x -> |
441 | Visitor_c.vk_cst_s (mk_bigf (maxpos, minpos) (lop,mop,rop,bop)) | |
442 | x | |
443 | ||
444 | ||
ae4735db | 445 | let distribute_mck_define_params (maxpos, minpos) = fun (lop,mop,rop,bop) -> |
34e49164 | 446 | fun x -> |
ae4735db | 447 | Visitor_c.vk_define_params_splitted_s |
34e49164 C |
448 | (mk_bigf (maxpos, minpos) (lop,mop,rop,bop)) |
449 | x | |
450 | ||
ae4735db | 451 | let get_pos mck = |
34e49164 | 452 | match mck with |
951c7801 | 453 | | Ast_cocci.PLUS _ -> raise Impossible |
708f4980 | 454 | | Ast_cocci.CONTEXT (Ast_cocci.FixPos (i1,i2),_) |
ae4735db | 455 | | Ast_cocci.MINUS (Ast_cocci.FixPos (i1,i2),_,_,_) -> |
34e49164 | 456 | Ast_cocci.FixPos (i1,i2) |
708f4980 | 457 | | Ast_cocci.CONTEXT (Ast_cocci.DontCarePos,_) |
ae4735db | 458 | | Ast_cocci.MINUS (Ast_cocci.DontCarePos,_,_,_) -> |
34e49164 | 459 | Ast_cocci.DontCarePos |
90aeb998 | 460 | | _ -> failwith "weird: dont have position info for the mcodekind 2" |
ae4735db C |
461 | |
462 | let distrf (ii_of_x_f, distribute_mck_x_f) = | |
463 | fun ia x -> fun tin -> | |
34e49164 C |
464 | let mck = Ast_cocci.get_mcodekind ia in |
465 | let (max, min) = Lib_parsing_c.max_min_by_pos (ii_of_x_f x) | |
466 | in | |
ae4735db | 467 | if |
34e49164 | 468 | (* bug: check_pos mck max && check_pos mck min |
ae4735db | 469 | * |
34e49164 C |
470 | * if do that then if have - f(...); and in C f(1,2); then we |
471 | * would get a "already tagged" because the '...' would sucess in | |
472 | * transformaing both '1' and '1,2'. So being in the range is not | |
ae4735db | 473 | * enough. We must be equal exactly to the range! |
34e49164 | 474 | *) |
ae4735db | 475 | (match get_pos mck with |
34e49164 | 476 | | Ast_cocci.DontCarePos -> true |
ae4735db | 477 | | Ast_cocci.FixPos (i1, i2) -> |
b1b2de81 | 478 | i1 =*= min && i2 =*= max |
34e49164 C |
479 | | _ -> raise Impossible |
480 | ) | |
481 | ||
ae4735db | 482 | then |
34e49164 | 483 | return ( |
ae4735db | 484 | ia, |
34e49164 C |
485 | distribute_mck mck (distribute_mck_x_f (max,min)) x tin |
486 | ) tin | |
487 | else fail tin | |
488 | ||
489 | ||
490 | let distrf_e = distrf (Lib_parsing_c.ii_of_expr, distribute_mck_expr) | |
491 | let distrf_args = distrf (Lib_parsing_c.ii_of_args, distribute_mck_args) | |
492 | let distrf_type = distrf (Lib_parsing_c.ii_of_type, distribute_mck_type) | |
493 | let distrf_param = distrf (Lib_parsing_c.ii_of_param, distribute_mck_param) | |
494 | let distrf_params = distrf (Lib_parsing_c.ii_of_params,distribute_mck_params) | |
495 | let distrf_ini = distrf (Lib_parsing_c.ii_of_ini,distribute_mck_ini) | |
c491d8ee | 496 | let distrf_inis = distrf (Lib_parsing_c.ii_of_inis,distribute_mck_inis) |
413ffc02 C |
497 | let distrf_decl = distrf (Lib_parsing_c.ii_of_decl,distribute_mck_decl) |
498 | let distrf_field = distrf (Lib_parsing_c.ii_of_field,distribute_mck_field) | |
34e49164 | 499 | let distrf_node = distrf (Lib_parsing_c.ii_of_node,distribute_mck_node) |
c491d8ee C |
500 | let distrf_enum_fields = |
501 | distrf (Lib_parsing_c.ii_of_enum_fields, distribute_mck_enum_fields) | |
ae4735db | 502 | let distrf_struct_fields = |
34e49164 | 503 | distrf (Lib_parsing_c.ii_of_struct_fields, distribute_mck_struct_fields) |
ae4735db | 504 | let distrf_cst = |
34e49164 | 505 | distrf (Lib_parsing_c.ii_of_cst, distribute_mck_cst) |
ae4735db | 506 | let distrf_define_params = |
34e49164 C |
507 | distrf (Lib_parsing_c.ii_of_define_params,distribute_mck_define_params) |
508 | ||
509 | ||
510 | (* ------------------------------------------------------------------------*) | |
ae4735db | 511 | (* Environment *) |
34e49164 | 512 | (* ------------------------------------------------------------------------*) |
ae4735db | 513 | let meta_name_to_str (s1, s2) = s1 ^ "." ^ s2 |
34e49164 | 514 | |
ae4735db | 515 | let envf keep inherited = fun (s, value, _) f tin -> |
34e49164 | 516 | let s = Ast_cocci.unwrap_mcode s in |
ae4735db | 517 | let v = |
b1b2de81 | 518 | if keep =*= Type_cocci.Saved |
34e49164 C |
519 | then ( |
520 | try Some (List.assoc s tin.binding) | |
ae4735db | 521 | with Not_found -> |
34e49164 C |
522 | pr2(sprintf |
523 | "Don't find value for metavariable %s in the environment" | |
524 | (meta_name_to_str s)); | |
525 | None) | |
526 | else | |
527 | (* not raise Impossible! *) | |
528 | Some (value) | |
529 | in | |
530 | match v with | |
531 | | None -> fail tin | |
532 | | Some (value') -> | |
533 | ||
534 | (* Ex: in cocci_vs_c someone wants to add a binding. Here in | |
ae4735db | 535 | * transformation3 the value for this var may be already in the |
34e49164 C |
536 | * env, because for instance its value were fixed in a previous |
537 | * SmPL rule. So here we want to check that this is the same value. | |
538 | * If forget to do the check, what can happen ? Because of Exp | |
ae4735db | 539 | * and other disjunctive feature of cocci_vs_c (>||>), we |
34e49164 C |
540 | * may accept a match at a wrong position. Maybe later this |
541 | * will be detected via the pos system on tokens, but maybe | |
542 | * not. So safer to keep the check. | |
543 | *) | |
544 | ||
545 | (*f () tin*) | |
978fd7e5 C |
546 | let equal = |
547 | if inherited | |
548 | then Cocci_vs_c.equal_inh_metavarval | |
549 | else Cocci_vs_c.equal_metavarval in | |
ae4735db | 550 | if equal value value' |
34e49164 C |
551 | then f () tin |
552 | else fail tin | |
553 | ||
ae4735db | 554 | |
951c7801 C |
555 | let check_idconstraint matcher c id = fun f tin -> f () tin |
556 | let check_constraints_ne matcher constraints exp = fun f tin -> f () tin | |
34e49164 C |
557 | |
558 | (* ------------------------------------------------------------------------*) | |
ae4735db | 559 | (* Environment, allbounds *) |
34e49164 C |
560 | (* ------------------------------------------------------------------------*) |
561 | let (all_bound : Ast_cocci.meta_name list -> tin -> bool) = fun l tin -> | |
562 | true (* in transform we don't care ? *) | |
563 | ||
564 | end | |
565 | ||
566 | (*****************************************************************************) | |
ae4735db | 567 | (* Entry point *) |
34e49164 | 568 | (*****************************************************************************) |
485bce71 | 569 | module TRANS = Cocci_vs_c.COCCI_VS_C (XTRANS) |
34e49164 C |
570 | |
571 | ||
ae4735db C |
572 | let transform_re_node a b tin = |
573 | match TRANS.rule_elem_node a b tin with | |
34e49164 C |
574 | | None -> raise Impossible |
575 | | Some (_sp, b') -> b' | |
576 | ||
34e49164 | 577 | let (transform2: string (* rule name *) -> string list (* dropped_isos *) -> |
1be43e12 | 578 | Lib_engine.metavars_binding (* inherited bindings *) -> |
ae4735db C |
579 | Lib_engine.numbered_transformation_info -> F.cflow -> F.cflow) = |
580 | fun rule_name dropped_isos binding0 xs cflow -> | |
ae4735db | 581 | let extra = { |
34e49164 C |
582 | optional_storage_iso = not(List.mem "optional_storage" dropped_isos); |
583 | optional_qualifier_iso = not(List.mem "optional_qualifier" dropped_isos); | |
584 | value_format_iso = not(List.mem "value_format" dropped_isos); | |
585 | current_rule_name = rule_name; | |
708f4980 | 586 | index = []; |
34e49164 C |
587 | } in |
588 | ||
589 | (* find the node, transform, update the node, and iter for all elements *) | |
590 | ||
ae4735db | 591 | xs +> List.fold_left (fun acc (index, (nodei, binding, rule_elem)) -> |
34e49164 | 592 | (* subtil: not cflow#nodes but acc#nodes *) |
ae4735db | 593 | let node = acc#nodes#assoc nodei in |
34e49164 | 594 | |
faf9a90c | 595 | if !Flag.show_transinfo |
34e49164 | 596 | then pr2 "transform one node"; |
708f4980 | 597 | |
34e49164 | 598 | let tin = { |
708f4980 | 599 | XTRANS.extra = {extra with index = index}; |
1be43e12 C |
600 | XTRANS.binding = binding0@binding; |
601 | XTRANS.binding0 = []; (* not used - everything constant for trans *) | |
34e49164 C |
602 | } in |
603 | ||
604 | let node' = transform_re_node rule_elem node tin in | |
605 | ||
ae4735db | 606 | (* assert that have done something. But with metaruleElem sometimes |
34e49164 C |
607 | dont modify fake nodes. So special case before on Fake nodes. *) |
608 | (match F.unwrap node with | |
609 | | F.Enter | F.Exit | F.ErrorExit | |
ae4735db | 610 | | F.EndStatement _ | F.CaseNode _ |
34e49164 | 611 | | F.Fake |
ae4735db | 612 | | F.TrueNode | F.FalseNode | F.AfterNode | F.FallThroughNode |
34e49164 C |
613 | -> () |
614 | | _ -> () (* assert (not (node =*= node')); *) | |
615 | ); | |
616 | ||
617 | (* useless, we dont go back from flow to ast now *) | |
618 | (* let node' = lastfix_comma_struct node' in *) | |
ae4735db | 619 | |
34e49164 C |
620 | acc#replace_node (nodei, node'); |
621 | acc | |
622 | ) cflow | |
623 | ||
624 | ||
625 | ||
ae4735db C |
626 | let transform a b c d e = |
627 | Common.profile_code "Transformation3.transform" | |
1be43e12 | 628 | (fun () -> transform2 a b c d e) |