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5636bb2c | 1 | (* |
90aeb998 C |
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 | |
9f8e26f4 C |
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 | ||
ae4735db | 25 | (* Yoann Padioleau |
951c7801 C |
26 | * |
27 | * Copyright (C) 2006, 2007 Ecole des Mines de Nantes | |
28 | * | |
29 | * This program is free software; you can redistribute it and/or | |
30 | * modify it under the terms of the GNU General Public License (GPL) | |
31 | * version 2 as published by the Free Software Foundation. | |
ae4735db | 32 | * |
951c7801 C |
33 | * This program is distributed in the hope that it will be useful, |
34 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
35 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
36 | * file license.txt for more details. | |
ae4735db | 37 | * |
951c7801 C |
38 | * This file was part of Coccinelle. |
39 | *) | |
34e49164 C |
40 | open Common |
41 | ||
42 | module F = Control_flow_c | |
43 | ||
44 | (*****************************************************************************) | |
ae4735db | 45 | (* The functor argument *) |
34e49164 C |
46 | (*****************************************************************************) |
47 | ||
48 | (* info passed recursively in monad in addition to binding *) | |
ae4735db | 49 | type xinfo = { |
34e49164 C |
50 | optional_storage_iso : bool; |
51 | optional_qualifier_iso : bool; | |
52 | value_format_iso : bool; | |
53 | current_rule_name : string; (* used for errors *) | |
708f4980 | 54 | index : int list (* witness tree indices *) |
34e49164 C |
55 | } |
56 | ||
57 | module XTRANS = struct | |
58 | ||
59 | (* ------------------------------------------------------------------------*) | |
ae4735db | 60 | (* Combinators history *) |
34e49164 C |
61 | (* ------------------------------------------------------------------------*) |
62 | (* | |
ae4735db C |
63 | * version0: |
64 | * type ('a, 'b) transformer = | |
34e49164 | 65 | * 'a -> 'b -> Lib_engine.metavars_binding -> 'b |
ae4735db C |
66 | * exception NoMatch |
67 | * | |
34e49164 | 68 | * version1: |
ae4735db | 69 | * type ('a, 'b) transformer = |
34e49164 | 70 | * 'a -> 'b -> Lib_engine.metavars_binding -> 'b option |
ae4735db C |
71 | * use an exception monad |
72 | * | |
34e49164 C |
73 | * version2: |
74 | * type tin = Lib_engine.metavars_binding | |
75 | *) | |
76 | ||
77 | (* ------------------------------------------------------------------------*) | |
ae4735db | 78 | (* Standard type and operators *) |
34e49164 C |
79 | (* ------------------------------------------------------------------------*) |
80 | ||
ae4735db | 81 | type tin = { |
34e49164 C |
82 | extra: xinfo; |
83 | binding: Lib_engine.metavars_binding; | |
1be43e12 | 84 | binding0: Lib_engine.metavars_binding; (* inherited variable *) |
34e49164 C |
85 | } |
86 | type 'x tout = 'x option | |
87 | ||
88 | type ('a, 'b) matcher = 'a -> 'b -> tin -> ('a * 'b) tout | |
89 | ||
ae4735db | 90 | let (>>=) m f = fun tin -> |
34e49164 C |
91 | match m tin with |
92 | | None -> None | |
93 | | Some (a,b) -> f a b tin | |
94 | ||
ae4735db | 95 | let return = fun x -> fun tin -> |
34e49164 C |
96 | Some x |
97 | ||
98 | (* can have fail in transform now that the process is deterministic ? *) | |
ae4735db | 99 | let fail = fun tin -> |
34e49164 C |
100 | None |
101 | ||
ae4735db | 102 | let (>||>) m1 m2 = fun tin -> |
34e49164 C |
103 | match m1 tin with |
104 | | None -> m2 tin | |
105 | | Some x -> Some x (* stop as soon as have found something *) | |
106 | ||
107 | let (>|+|>) m1 m2 = m1 >||> m2 | |
108 | ||
ae4735db | 109 | let (>&&>) f m = fun tin -> |
34e49164 C |
110 | if f tin then m tin else fail tin |
111 | ||
ae4735db | 112 | let optional_storage_flag f = fun tin -> |
34e49164 C |
113 | f (tin.extra.optional_storage_iso) tin |
114 | ||
ae4735db | 115 | let optional_qualifier_flag f = fun tin -> |
34e49164 C |
116 | f (tin.extra.optional_qualifier_iso) tin |
117 | ||
ae4735db | 118 | let value_format_flag f = fun tin -> |
34e49164 C |
119 | f (tin.extra.value_format_iso) tin |
120 | ||
485bce71 | 121 | let mode = Cocci_vs_c.TransformMode |
34e49164 C |
122 | |
123 | (* ------------------------------------------------------------------------*) | |
ae4735db | 124 | (* Exp *) |
34e49164 | 125 | (* ------------------------------------------------------------------------*) |
ae4735db | 126 | let cocciExp = fun expf expa node -> 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_node_s bigf node) | |
137 | ||
138 | ||
139 | (* same as cocciExp, but for expressions in an expression, not expressions | |
140 | in a node *) | |
ae4735db | 141 | let cocciExpExp = fun expf expa expb -> fun tin -> |
34e49164 | 142 | |
ae4735db C |
143 | let bigf = { |
144 | Visitor_c.default_visitor_c_s with | |
34e49164 C |
145 | Visitor_c.kexpr_s = (fun (k, bigf) expb -> |
146 | match expf expa expb tin with | |
147 | | None -> (* failed *) k expb | |
148 | | Some (x, expb) -> expb); | |
149 | } | |
150 | in | |
151 | Some (expa, Visitor_c.vk_expr_s bigf expb) | |
152 | ||
153 | ||
ae4735db | 154 | let cocciTy = fun expf expa node -> fun tin -> |
34e49164 | 155 | |
ae4735db C |
156 | let bigf = { |
157 | Visitor_c.default_visitor_c_s with | |
34e49164 C |
158 | Visitor_c.ktype_s = (fun (k, bigf) expb -> |
159 | match expf expa expb tin with | |
160 | | None -> (* failed *) k expb | |
161 | | Some (x, expb) -> expb); | |
162 | } | |
163 | in | |
164 | Some (expa, Visitor_c.vk_node_s bigf node) | |
165 | ||
ae4735db | 166 | let cocciInit = fun expf expa node -> fun tin -> |
1be43e12 | 167 | |
ae4735db C |
168 | let bigf = { |
169 | Visitor_c.default_visitor_c_s with | |
1be43e12 C |
170 | Visitor_c.kini_s = (fun (k, bigf) expb -> |
171 | match expf expa expb tin with | |
172 | | None -> (* failed *) k expb | |
173 | | Some (x, expb) -> expb); | |
174 | } | |
175 | in | |
176 | Some (expa, Visitor_c.vk_node_s bigf node) | |
177 | ||
34e49164 C |
178 | |
179 | (* ------------------------------------------------------------------------*) | |
ae4735db | 180 | (* Tokens *) |
34e49164 | 181 | (* ------------------------------------------------------------------------*) |
ae4735db | 182 | let check_pos info mck pos = |
34e49164 | 183 | match mck with |
951c7801 | 184 | | Ast_cocci.PLUS _ -> raise Impossible |
708f4980 | 185 | | Ast_cocci.CONTEXT (Ast_cocci.FixPos (i1,i2),_) |
ae4735db | 186 | | Ast_cocci.MINUS (Ast_cocci.FixPos (i1,i2),_,_,_) -> |
34e49164 | 187 | pos <= i2 && pos >= i1 |
708f4980 | 188 | | Ast_cocci.CONTEXT (Ast_cocci.DontCarePos,_) |
ae4735db | 189 | | Ast_cocci.MINUS (Ast_cocci.DontCarePos,_,_,_) -> |
34e49164 C |
190 | true |
191 | | _ -> | |
192 | match info with | |
193 | Some info -> | |
194 | failwith | |
195 | (Printf.sprintf | |
0708f913 | 196 | "weird: dont have position info for the mcodekind in line %d column %d" |
34e49164 C |
197 | info.Ast_cocci.line info.Ast_cocci.column) |
198 | | None -> | |
0708f913 | 199 | failwith "weird: dont have position info for the mcodekind" |
34e49164 C |
200 | |
201 | ||
ae4735db | 202 | let tag_with_mck mck ib = fun tin -> |
34e49164 C |
203 | |
204 | let cocciinforef = ib.Ast_c.cocci_tag in | |
951c7801 | 205 | let (oldmcode, oldenvs) = Ast_c.mcode_and_env_of_cocciref cocciinforef in |
34e49164 C |
206 | |
207 | let mck = | |
ae4735db | 208 | (* coccionly: |
34e49164 C |
209 | if !Flag_parsing_cocci.sgrep_mode |
210 | then Sgrep.process_sgrep ib mck | |
ae4735db | 211 | else |
485bce71 | 212 | *) |
ae4735db | 213 | mck |
34e49164 C |
214 | in |
215 | (match mck, Ast_c.pinfo_of_info ib with | |
216 | | _, Ast_c.AbstractLineTok _ -> raise Impossible | |
ae4735db | 217 | | Ast_cocci.MINUS(_), Ast_c.ExpandedTok _ -> |
34e49164 C |
218 | failwith ("try to delete an expanded token: " ^ (Ast_c.str_of_info ib)) |
219 | | _ -> () | |
220 | ); | |
221 | ||
951c7801 C |
222 | let many_count = function |
223 | Ast_cocci.BEFORE(_,Ast_cocci.MANY) | Ast_cocci.AFTER(_,Ast_cocci.MANY) | |
224 | | Ast_cocci.BEFOREAFTER(_,_,Ast_cocci.MANY) -> true | |
225 | | _ -> false in | |
226 | ||
227 | (match (oldmcode,mck) with | |
228 | | (Ast_cocci.CONTEXT(_,Ast_cocci.NOTHING), _) -> | |
229 | (* nothing there, so take the new stuff *) | |
708f4980 C |
230 | let update_inst inst = function |
231 | Ast_cocci.MINUS (pos,_,adj,any_xxs) -> | |
232 | Ast_cocci.MINUS (pos,inst,adj,any_xxs) | |
233 | | mck -> mck in | |
951c7801 C |
234 | cocciinforef := Some (update_inst tin.extra.index mck, [tin.binding]) |
235 | | (_, Ast_cocci.CONTEXT(_,Ast_cocci.NOTHING)) -> | |
236 | (* can this case occur? stay with the old stuff *) | |
237 | () | |
708f4980 C |
238 | | (Ast_cocci.MINUS(old_pos,old_inst,old_adj,[]), |
239 | Ast_cocci.MINUS(new_pos,new_inst,new_adj,[])) | |
951c7801 C |
240 | when old_pos = new_pos && |
241 | (List.mem tin.binding oldenvs or !Flag.sgrep_mode2) | |
708f4980 C |
242 | (* no way to combine adjacency information, just drop one *) |
243 | -> | |
244 | cocciinforef := Some | |
245 | (Ast_cocci.MINUS | |
246 | (old_pos,Common.union_set old_inst new_inst,old_adj,[]), | |
951c7801 | 247 | [tin.binding]); |
708f4980 | 248 | (if !Flag_matcher.show_misc |
951c7801 C |
249 | then pr2 "already tagged but only removed, so safe") |
250 | ||
251 | | (Ast_cocci.CONTEXT(old_pos,old_modif), | |
252 | Ast_cocci.CONTEXT(new_pos,new_modif)) | |
253 | when old_pos = new_pos && | |
254 | old_modif = new_modif && many_count old_modif -> | |
255 | (* iteration only allowed on context; no way to replace something | |
256 | more than once; now no need for iterable; just check a flag *) | |
257 | ||
258 | cocciinforef := | |
259 | Some(Ast_cocci.CONTEXT(old_pos,old_modif),tin.binding::oldenvs) | |
708f4980 | 260 | |
ae4735db C |
261 | | _ -> |
262 | (* coccionly: | |
34e49164 C |
263 | if !Flag.sgrep_mode2 |
264 | then ib (* safe *) | |
ae4735db | 265 | else |
485bce71 C |
266 | *) |
267 | begin | |
ae4735db | 268 | (* coccionly: |
708f4980 C |
269 | pad: if dont want cocci write: |
270 | failwith | |
b1b2de81 C |
271 | (match Ast_c.pinfo_of_info ib with |
272 | Ast_c.FakeTok _ -> "already tagged fake token" | |
708f4980 C |
273 | *) |
274 | let pm str mcode env = | |
275 | Printf.sprintf | |
951c7801 | 276 | "%s modification:\n%s\nAccording to environment %d:\n%s\n" |
708f4980 C |
277 | str |
278 | (Common.format_to_string | |
279 | (function _ -> | |
280 | Pretty_print_cocci.print_mcodekind mcode)) | |
951c7801 | 281 | (List.length env) |
708f4980 C |
282 | (String.concat "\n" |
283 | (List.map | |
284 | (function ((r,vr),vl) -> | |
285 | Printf.sprintf " %s.%s -> %s" r vr | |
286 | (Common.format_to_string | |
287 | (function _ -> | |
288 | Pretty_print_engine.pp_binding_kind vl))) | |
289 | env)) in | |
290 | flush stdout; flush stderr; | |
291 | Common.pr2 | |
951c7801 C |
292 | ("\n"^ (String.concat "\n" |
293 | (List.map (pm "previous" oldmcode) oldenvs)) ^ "\n" | |
294 | ^ (pm "current" mck tin.binding)); | |
708f4980 C |
295 | failwith |
296 | (match Ast_c.pinfo_of_info ib with | |
297 | Ast_c.FakeTok _ -> | |
298 | Common.sprintf "%s: already tagged fake token\n" | |
299 | tin.extra.current_rule_name | |
b1b2de81 | 300 | | _ -> |
708f4980 C |
301 | Printf.sprintf |
302 | "%s: already tagged token:\nC code context\n%s" | |
b1b2de81 C |
303 | tin.extra.current_rule_name |
304 | (Common.error_message (Ast_c.file_of_info ib) | |
305 | (Ast_c.str_of_info ib, Ast_c.opos_of_info ib))) | |
951c7801 C |
306 | end); |
307 | ib | |
34e49164 | 308 | |
ae4735db | 309 | let tokenf ia ib = fun tin -> |
34e49164 C |
310 | let (_,i,mck,_) = ia in |
311 | let pos = Ast_c.info_to_fixpos ib in | |
ae4735db | 312 | if check_pos (Some i) mck pos |
34e49164 C |
313 | then return (ia, tag_with_mck mck ib tin) tin |
314 | else fail tin | |
315 | ||
ae4735db | 316 | let tokenf_mck mck ib = fun tin -> |
34e49164 | 317 | let pos = Ast_c.info_to_fixpos ib in |
ae4735db | 318 | if check_pos None mck pos |
34e49164 C |
319 | then return (mck, tag_with_mck mck ib tin) tin |
320 | else fail tin | |
321 | ||
322 | ||
323 | (* ------------------------------------------------------------------------*) | |
ae4735db | 324 | (* Distribute mcode *) |
34e49164 C |
325 | (* ------------------------------------------------------------------------*) |
326 | ||
327 | (* When in the SP we attach something to a metavariable, or delete it, as in | |
328 | * - S | |
329 | * + foo(); | |
ae4735db C |
330 | * we have to minusize all the token that compose S in the C code, and |
331 | * attach the 'foo();' to the right token, the one at the very right. | |
34e49164 C |
332 | *) |
333 | ||
ae4735db | 334 | type 'a distributer = |
34e49164 C |
335 | (Ast_c.info -> Ast_c.info) * (* what to do on left *) |
336 | (Ast_c.info -> Ast_c.info) * (* what to do on middle *) | |
337 | (Ast_c.info -> Ast_c.info) * (* what to do on right *) | |
338 | (Ast_c.info -> Ast_c.info) -> (* what to do on both *) | |
339 | 'a -> 'a | |
340 | ||
341 | let distribute_mck mcodekind distributef expr tin = | |
342 | match mcodekind with | |
ae4735db | 343 | | Ast_cocci.MINUS (pos,_,adj,any_xxs) -> |
708f4980 | 344 | let inst = tin.extra.index in |
34e49164 | 345 | distributef ( |
708f4980 C |
346 | (fun ib -> |
347 | tag_with_mck (Ast_cocci.MINUS (pos,inst,adj,any_xxs)) ib tin), | |
348 | (fun ib -> | |
349 | tag_with_mck (Ast_cocci.MINUS (pos,inst,adj,[])) ib tin), | |
350 | (fun ib -> | |
351 | tag_with_mck (Ast_cocci.MINUS (pos,inst,adj,[])) ib tin), | |
352 | (fun ib -> | |
353 | tag_with_mck (Ast_cocci.MINUS (pos,inst,adj,any_xxs)) ib tin) | |
34e49164 | 354 | ) expr |
ae4735db | 355 | | Ast_cocci.CONTEXT (pos,any_befaft) -> |
34e49164 C |
356 | (match any_befaft with |
357 | | Ast_cocci.NOTHING -> expr | |
ae4735db C |
358 | |
359 | | Ast_cocci.BEFORE (xxs,c) -> | |
34e49164 | 360 | distributef ( |
ae4735db | 361 | (fun ib -> tag_with_mck |
951c7801 | 362 | (Ast_cocci.CONTEXT (pos,Ast_cocci.BEFORE (xxs,c))) ib tin), |
ae4735db C |
363 | (fun x -> x), |
364 | (fun x -> x), | |
365 | (fun ib -> tag_with_mck | |
951c7801 | 366 | (Ast_cocci.CONTEXT (pos,Ast_cocci.BEFORE (xxs,c))) ib tin) |
34e49164 | 367 | ) expr |
ae4735db | 368 | | Ast_cocci.AFTER (xxs,c) -> |
34e49164 | 369 | distributef ( |
ae4735db C |
370 | (fun x -> x), |
371 | (fun x -> x), | |
372 | (fun ib -> tag_with_mck | |
951c7801 | 373 | (Ast_cocci.CONTEXT (pos,Ast_cocci.AFTER (xxs,c))) ib tin), |
ae4735db | 374 | (fun ib -> tag_with_mck |
951c7801 | 375 | (Ast_cocci.CONTEXT (pos,Ast_cocci.AFTER (xxs,c))) ib tin) |
34e49164 C |
376 | ) expr |
377 | ||
ae4735db | 378 | | Ast_cocci.BEFOREAFTER (xxs, yys, c) -> |
34e49164 | 379 | distributef ( |
ae4735db | 380 | (fun ib -> tag_with_mck |
951c7801 | 381 | (Ast_cocci.CONTEXT (pos,Ast_cocci.BEFORE (xxs,c))) ib tin), |
ae4735db C |
382 | (fun x -> x), |
383 | (fun ib -> tag_with_mck | |
951c7801 | 384 | (Ast_cocci.CONTEXT (pos,Ast_cocci.AFTER (yys,c))) ib tin), |
ae4735db | 385 | (fun ib -> tag_with_mck |
951c7801 | 386 | (Ast_cocci.CONTEXT (pos,Ast_cocci.BEFOREAFTER (xxs,yys,c))) |
34e49164 C |
387 | ib tin) |
388 | ) expr | |
389 | ||
390 | ) | |
951c7801 | 391 | | Ast_cocci.PLUS _ -> raise Impossible |
34e49164 C |
392 | |
393 | ||
394 | (* use new strategy, collect ii, sort, recollect and tag *) | |
395 | ||
ae4735db C |
396 | let mk_bigf (maxpos, minpos) (lop,mop,rop,bop) = |
397 | let bigf = { | |
34e49164 | 398 | Visitor_c.default_visitor_c_s with |
ae4735db | 399 | Visitor_c.kinfo_s = (fun (k,bigf) i -> |
34e49164 C |
400 | let pos = Ast_c.info_to_fixpos i in |
401 | match () with | |
402 | | _ when Ast_cocci.equal_pos pos maxpos && | |
403 | Ast_cocci.equal_pos pos minpos -> bop i | |
404 | | _ when Ast_cocci.equal_pos pos maxpos -> rop i | |
405 | | _ when Ast_cocci.equal_pos pos minpos -> lop i | |
406 | | _ -> mop i | |
407 | ) | |
408 | } in | |
409 | bigf | |
410 | ||
411 | let distribute_mck_expr (maxpos, minpos) = fun (lop,mop,rop,bop) -> fun x -> | |
412 | Visitor_c.vk_expr_s (mk_bigf (maxpos, minpos) (lop,mop,rop,bop)) x | |
413 | ||
414 | let distribute_mck_args (maxpos, minpos) = fun (lop,mop,rop,bop) -> fun x -> | |
415 | Visitor_c.vk_args_splitted_s (mk_bigf (maxpos, minpos) (lop,mop,rop,bop)) x | |
416 | ||
417 | let distribute_mck_type (maxpos, minpos) = fun (lop,mop,rop,bop) -> fun x -> | |
418 | Visitor_c.vk_type_s (mk_bigf (maxpos, minpos) (lop,mop,rop,bop)) x | |
419 | ||
413ffc02 C |
420 | let distribute_mck_decl (maxpos, minpos) = fun (lop,mop,rop,bop) -> fun x -> |
421 | Visitor_c.vk_decl_s (mk_bigf (maxpos, minpos) (lop,mop,rop,bop)) x | |
422 | ||
423 | let distribute_mck_field (maxpos, minpos) = fun (lop,mop,rop,bop) -> fun x -> | |
424 | Visitor_c.vk_struct_field_s (mk_bigf (maxpos, minpos) (lop,mop,rop,bop)) x | |
425 | ||
34e49164 C |
426 | let distribute_mck_ini (maxpos, minpos) = fun (lop,mop,rop,bop) -> fun x -> |
427 | Visitor_c.vk_ini_s (mk_bigf (maxpos, minpos) (lop,mop,rop,bop)) x | |
428 | ||
429 | let distribute_mck_param (maxpos, minpos) = fun (lop,mop,rop,bop) -> fun x -> | |
430 | Visitor_c.vk_param_s (mk_bigf (maxpos, minpos) (lop,mop,rop,bop)) x | |
431 | ||
432 | let distribute_mck_params (maxpos, minpos) = fun (lop,mop,rop,bop) ->fun x -> | |
433 | Visitor_c.vk_params_splitted_s (mk_bigf (maxpos, minpos) (lop,mop,rop,bop)) | |
434 | x | |
435 | ||
436 | let distribute_mck_node (maxpos, minpos) = fun (lop,mop,rop,bop) ->fun x -> | |
437 | Visitor_c.vk_node_s (mk_bigf (maxpos, minpos) (lop,mop,rop,bop)) | |
438 | x | |
439 | ||
ae4735db | 440 | let distribute_mck_struct_fields (maxpos, minpos) = |
34e49164 C |
441 | fun (lop,mop,rop,bop) ->fun x -> |
442 | Visitor_c.vk_struct_fields_s (mk_bigf (maxpos, minpos) (lop,mop,rop,bop)) | |
443 | x | |
444 | ||
ae4735db | 445 | let distribute_mck_cst (maxpos, minpos) = |
34e49164 C |
446 | fun (lop,mop,rop,bop) ->fun x -> |
447 | Visitor_c.vk_cst_s (mk_bigf (maxpos, minpos) (lop,mop,rop,bop)) | |
448 | x | |
449 | ||
450 | ||
ae4735db | 451 | let distribute_mck_define_params (maxpos, minpos) = fun (lop,mop,rop,bop) -> |
34e49164 | 452 | fun x -> |
ae4735db | 453 | Visitor_c.vk_define_params_splitted_s |
34e49164 C |
454 | (mk_bigf (maxpos, minpos) (lop,mop,rop,bop)) |
455 | x | |
456 | ||
ae4735db | 457 | let get_pos mck = |
34e49164 | 458 | match mck with |
951c7801 | 459 | | Ast_cocci.PLUS _ -> raise Impossible |
708f4980 | 460 | | Ast_cocci.CONTEXT (Ast_cocci.FixPos (i1,i2),_) |
ae4735db | 461 | | Ast_cocci.MINUS (Ast_cocci.FixPos (i1,i2),_,_,_) -> |
34e49164 | 462 | Ast_cocci.FixPos (i1,i2) |
708f4980 | 463 | | Ast_cocci.CONTEXT (Ast_cocci.DontCarePos,_) |
ae4735db | 464 | | Ast_cocci.MINUS (Ast_cocci.DontCarePos,_,_,_) -> |
34e49164 | 465 | Ast_cocci.DontCarePos |
90aeb998 | 466 | | _ -> failwith "weird: dont have position info for the mcodekind 2" |
ae4735db C |
467 | |
468 | let distrf (ii_of_x_f, distribute_mck_x_f) = | |
469 | fun ia x -> fun tin -> | |
34e49164 C |
470 | let mck = Ast_cocci.get_mcodekind ia in |
471 | let (max, min) = Lib_parsing_c.max_min_by_pos (ii_of_x_f x) | |
472 | in | |
ae4735db | 473 | if |
34e49164 | 474 | (* bug: check_pos mck max && check_pos mck min |
ae4735db | 475 | * |
34e49164 C |
476 | * if do that then if have - f(...); and in C f(1,2); then we |
477 | * would get a "already tagged" because the '...' would sucess in | |
478 | * transformaing both '1' and '1,2'. So being in the range is not | |
ae4735db | 479 | * enough. We must be equal exactly to the range! |
34e49164 | 480 | *) |
ae4735db | 481 | (match get_pos mck with |
34e49164 | 482 | | Ast_cocci.DontCarePos -> true |
ae4735db | 483 | | Ast_cocci.FixPos (i1, i2) -> |
b1b2de81 | 484 | i1 =*= min && i2 =*= max |
34e49164 C |
485 | | _ -> raise Impossible |
486 | ) | |
487 | ||
ae4735db | 488 | then |
34e49164 | 489 | return ( |
ae4735db | 490 | ia, |
34e49164 C |
491 | distribute_mck mck (distribute_mck_x_f (max,min)) x tin |
492 | ) tin | |
493 | else fail tin | |
494 | ||
495 | ||
496 | let distrf_e = distrf (Lib_parsing_c.ii_of_expr, distribute_mck_expr) | |
497 | let distrf_args = distrf (Lib_parsing_c.ii_of_args, distribute_mck_args) | |
498 | let distrf_type = distrf (Lib_parsing_c.ii_of_type, distribute_mck_type) | |
499 | let distrf_param = distrf (Lib_parsing_c.ii_of_param, distribute_mck_param) | |
500 | let distrf_params = distrf (Lib_parsing_c.ii_of_params,distribute_mck_params) | |
501 | let distrf_ini = distrf (Lib_parsing_c.ii_of_ini,distribute_mck_ini) | |
413ffc02 C |
502 | let distrf_decl = distrf (Lib_parsing_c.ii_of_decl,distribute_mck_decl) |
503 | let distrf_field = distrf (Lib_parsing_c.ii_of_field,distribute_mck_field) | |
34e49164 | 504 | let distrf_node = distrf (Lib_parsing_c.ii_of_node,distribute_mck_node) |
ae4735db | 505 | let distrf_struct_fields = |
34e49164 | 506 | distrf (Lib_parsing_c.ii_of_struct_fields, distribute_mck_struct_fields) |
ae4735db | 507 | let distrf_cst = |
34e49164 | 508 | distrf (Lib_parsing_c.ii_of_cst, distribute_mck_cst) |
ae4735db | 509 | let distrf_define_params = |
34e49164 C |
510 | distrf (Lib_parsing_c.ii_of_define_params,distribute_mck_define_params) |
511 | ||
512 | ||
513 | (* ------------------------------------------------------------------------*) | |
ae4735db | 514 | (* Environment *) |
34e49164 | 515 | (* ------------------------------------------------------------------------*) |
ae4735db | 516 | let meta_name_to_str (s1, s2) = s1 ^ "." ^ s2 |
34e49164 | 517 | |
ae4735db | 518 | let envf keep inherited = fun (s, value, _) f tin -> |
34e49164 | 519 | let s = Ast_cocci.unwrap_mcode s in |
ae4735db | 520 | let v = |
b1b2de81 | 521 | if keep =*= Type_cocci.Saved |
34e49164 C |
522 | then ( |
523 | try Some (List.assoc s tin.binding) | |
ae4735db | 524 | with Not_found -> |
34e49164 C |
525 | pr2(sprintf |
526 | "Don't find value for metavariable %s in the environment" | |
527 | (meta_name_to_str s)); | |
528 | None) | |
529 | else | |
530 | (* not raise Impossible! *) | |
531 | Some (value) | |
532 | in | |
533 | match v with | |
534 | | None -> fail tin | |
535 | | Some (value') -> | |
536 | ||
537 | (* Ex: in cocci_vs_c someone wants to add a binding. Here in | |
ae4735db | 538 | * transformation3 the value for this var may be already in the |
34e49164 C |
539 | * env, because for instance its value were fixed in a previous |
540 | * SmPL rule. So here we want to check that this is the same value. | |
541 | * If forget to do the check, what can happen ? Because of Exp | |
ae4735db | 542 | * and other disjunctive feature of cocci_vs_c (>||>), we |
34e49164 C |
543 | * may accept a match at a wrong position. Maybe later this |
544 | * will be detected via the pos system on tokens, but maybe | |
545 | * not. So safer to keep the check. | |
546 | *) | |
547 | ||
548 | (*f () tin*) | |
978fd7e5 C |
549 | let equal = |
550 | if inherited | |
551 | then Cocci_vs_c.equal_inh_metavarval | |
552 | else Cocci_vs_c.equal_metavarval in | |
ae4735db | 553 | if equal value value' |
34e49164 C |
554 | then f () tin |
555 | else fail tin | |
556 | ||
ae4735db | 557 | |
951c7801 C |
558 | let check_idconstraint matcher c id = fun f tin -> f () tin |
559 | let check_constraints_ne matcher constraints exp = fun f tin -> f () tin | |
34e49164 C |
560 | |
561 | (* ------------------------------------------------------------------------*) | |
ae4735db | 562 | (* Environment, allbounds *) |
34e49164 C |
563 | (* ------------------------------------------------------------------------*) |
564 | let (all_bound : Ast_cocci.meta_name list -> tin -> bool) = fun l tin -> | |
565 | true (* in transform we don't care ? *) | |
566 | ||
567 | end | |
568 | ||
569 | (*****************************************************************************) | |
ae4735db | 570 | (* Entry point *) |
34e49164 | 571 | (*****************************************************************************) |
485bce71 | 572 | module TRANS = Cocci_vs_c.COCCI_VS_C (XTRANS) |
34e49164 C |
573 | |
574 | ||
ae4735db C |
575 | let transform_re_node a b tin = |
576 | match TRANS.rule_elem_node a b tin with | |
34e49164 C |
577 | | None -> raise Impossible |
578 | | Some (_sp, b') -> b' | |
579 | ||
34e49164 | 580 | let (transform2: string (* rule name *) -> string list (* dropped_isos *) -> |
1be43e12 | 581 | Lib_engine.metavars_binding (* inherited bindings *) -> |
ae4735db C |
582 | Lib_engine.numbered_transformation_info -> F.cflow -> F.cflow) = |
583 | fun rule_name dropped_isos binding0 xs cflow -> | |
34e49164 | 584 | |
ae4735db | 585 | let extra = { |
34e49164 C |
586 | optional_storage_iso = not(List.mem "optional_storage" dropped_isos); |
587 | optional_qualifier_iso = not(List.mem "optional_qualifier" dropped_isos); | |
588 | value_format_iso = not(List.mem "value_format" dropped_isos); | |
589 | current_rule_name = rule_name; | |
708f4980 | 590 | index = []; |
34e49164 C |
591 | } in |
592 | ||
593 | (* find the node, transform, update the node, and iter for all elements *) | |
594 | ||
ae4735db | 595 | xs +> List.fold_left (fun acc (index, (nodei, binding, rule_elem)) -> |
34e49164 | 596 | (* subtil: not cflow#nodes but acc#nodes *) |
ae4735db | 597 | let node = acc#nodes#assoc nodei in |
34e49164 | 598 | |
faf9a90c | 599 | if !Flag.show_transinfo |
34e49164 | 600 | then pr2 "transform one node"; |
708f4980 | 601 | |
34e49164 | 602 | let tin = { |
708f4980 | 603 | XTRANS.extra = {extra with index = index}; |
1be43e12 C |
604 | XTRANS.binding = binding0@binding; |
605 | XTRANS.binding0 = []; (* not used - everything constant for trans *) | |
34e49164 C |
606 | } in |
607 | ||
608 | let node' = transform_re_node rule_elem node tin in | |
609 | ||
ae4735db | 610 | (* assert that have done something. But with metaruleElem sometimes |
34e49164 C |
611 | dont modify fake nodes. So special case before on Fake nodes. *) |
612 | (match F.unwrap node with | |
613 | | F.Enter | F.Exit | F.ErrorExit | |
ae4735db | 614 | | F.EndStatement _ | F.CaseNode _ |
34e49164 | 615 | | F.Fake |
ae4735db | 616 | | F.TrueNode | F.FalseNode | F.AfterNode | F.FallThroughNode |
34e49164 C |
617 | -> () |
618 | | _ -> () (* assert (not (node =*= node')); *) | |
619 | ); | |
620 | ||
621 | (* useless, we dont go back from flow to ast now *) | |
622 | (* let node' = lastfix_comma_struct node' in *) | |
ae4735db | 623 | |
34e49164 C |
624 | acc#replace_node (nodei, node'); |
625 | acc | |
626 | ) cflow | |
627 | ||
628 | ||
629 | ||
ae4735db C |
630 | let transform a b c d e = |
631 | Common.profile_code "Transformation3.transform" | |
1be43e12 | 632 | (fun () -> transform2 a b c d e) |