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34e49164 | 1 | (* |
faf9a90c | 2 | * Copyright 2005-2009, Ecole des Mines de Nantes, University of Copenhagen |
34e49164 C |
3 | * Yoann Padioleau, Julia Lawall, Rene Rydhof Hansen, Henrik Stuart, Gilles Muller |
4 | * This file is part of Coccinelle. | |
5 | * | |
6 | * Coccinelle is free software: you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation, according to version 2 of the License. | |
9 | * | |
10 | * Coccinelle is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with Coccinelle. If not, see <http://www.gnu.org/licenses/>. | |
17 | * | |
18 | * The authors reserve the right to distribute this or future versions of | |
19 | * Coccinelle under other licenses. | |
20 | *) | |
21 | ||
22 | ||
23 | (* Potential problem: offset of mcode is not updated when an iso is | |
24 | instantiated, implying that a term may end up with many mcodes with the | |
25 | same offset. On the other hand, at the moment offset only seems to be used | |
26 | before this phase. Furthermore add_dot_binding relies on the offset to | |
27 | remain the same between matching an iso and instantiating it with bindings. *) | |
28 | ||
29 | (* --------------------------------------------------------------------- *) | |
30 | (* match a SmPL expression against a SmPL abstract syntax tree, | |
31 | either - or + *) | |
32 | ||
33 | module Ast = Ast_cocci | |
34 | module Ast0 = Ast0_cocci | |
35 | module V0 = Visitor_ast0 | |
b1b2de81 | 36 | module VT0 = Visitor_ast0_types |
34e49164 C |
37 | |
38 | let current_rule = ref "" | |
39 | ||
40 | (* --------------------------------------------------------------------- *) | |
41 | ||
42 | type isomorphism = | |
43 | Ast_cocci.metavar list * Ast0_cocci.anything list list * string (* name *) | |
44 | ||
45 | let strip_info = | |
708f4980 C |
46 | let mcode (term,_,_,_,_,_) = |
47 | (term,Ast0.NONE,Ast0.default_info(),Ast0.PLUS,ref Ast0.NoMetaPos,-1) in | |
34e49164 C |
48 | let donothing r k e = |
49 | let x = k e in | |
50 | {(Ast0.wrap (Ast0.unwrap x)) with | |
51 | Ast0.mcodekind = ref Ast0.PLUS; | |
52 | Ast0.true_if_test = x.Ast0.true_if_test} in | |
b1b2de81 | 53 | V0.flat_rebuilder |
34e49164 | 54 | mcode mcode mcode mcode mcode mcode mcode mcode mcode mcode mcode mcode |
34e49164 C |
55 | donothing donothing donothing donothing donothing donothing |
56 | donothing donothing donothing donothing donothing donothing donothing | |
57 | donothing donothing | |
58 | ||
59 | let anything_equal = function | |
60 | (Ast0.DotsExprTag(d1),Ast0.DotsExprTag(d2)) -> | |
61 | failwith "not a possible variable binding" (*not sure why these are pbs*) | |
62 | | (Ast0.DotsInitTag(d1),Ast0.DotsInitTag(d2)) -> | |
63 | failwith "not a possible variable binding" | |
64 | | (Ast0.DotsParamTag(d1),Ast0.DotsParamTag(d2)) -> | |
65 | failwith "not a possible variable binding" | |
66 | | (Ast0.DotsStmtTag(d1),Ast0.DotsStmtTag(d2)) -> | |
b1b2de81 C |
67 | (strip_info.VT0.rebuilder_rec_statement_dots d1) = |
68 | (strip_info.VT0.rebuilder_rec_statement_dots d2) | |
34e49164 C |
69 | | (Ast0.DotsDeclTag(d1),Ast0.DotsDeclTag(d2)) -> |
70 | failwith "not a possible variable binding" | |
71 | | (Ast0.DotsCaseTag(d1),Ast0.DotsCaseTag(d2)) -> | |
72 | failwith "not a possible variable binding" | |
73 | | (Ast0.IdentTag(d1),Ast0.IdentTag(d2)) -> | |
b1b2de81 | 74 | (strip_info.VT0.rebuilder_rec_ident d1) = (strip_info.VT0.rebuilder_rec_ident d2) |
34e49164 | 75 | | (Ast0.ExprTag(d1),Ast0.ExprTag(d2)) -> |
b1b2de81 C |
76 | (strip_info.VT0.rebuilder_rec_expression d1) = |
77 | (strip_info.VT0.rebuilder_rec_expression d2) | |
34e49164 C |
78 | | (Ast0.ArgExprTag(_),_) | (_,Ast0.ArgExprTag(_)) -> |
79 | failwith "not possible - only in isos1" | |
80 | | (Ast0.TestExprTag(_),_) | (_,Ast0.TestExprTag(_)) -> | |
81 | failwith "not possible - only in isos1" | |
82 | | (Ast0.TypeCTag(d1),Ast0.TypeCTag(d2)) -> | |
b1b2de81 C |
83 | (strip_info.VT0.rebuilder_rec_typeC d1) = |
84 | (strip_info.VT0.rebuilder_rec_typeC d2) | |
34e49164 | 85 | | (Ast0.InitTag(d1),Ast0.InitTag(d2)) -> |
b1b2de81 C |
86 | (strip_info.VT0.rebuilder_rec_initialiser d1) = |
87 | (strip_info.VT0.rebuilder_rec_initialiser d2) | |
34e49164 | 88 | | (Ast0.ParamTag(d1),Ast0.ParamTag(d2)) -> |
b1b2de81 C |
89 | (strip_info.VT0.rebuilder_rec_parameter d1) = |
90 | (strip_info.VT0.rebuilder_rec_parameter d2) | |
34e49164 | 91 | | (Ast0.DeclTag(d1),Ast0.DeclTag(d2)) -> |
b1b2de81 C |
92 | (strip_info.VT0.rebuilder_rec_declaration d1) = |
93 | (strip_info.VT0.rebuilder_rec_declaration d2) | |
34e49164 | 94 | | (Ast0.StmtTag(d1),Ast0.StmtTag(d2)) -> |
b1b2de81 C |
95 | (strip_info.VT0.rebuilder_rec_statement d1) = |
96 | (strip_info.VT0.rebuilder_rec_statement d2) | |
34e49164 | 97 | | (Ast0.CaseLineTag(d1),Ast0.CaseLineTag(d2)) -> |
b1b2de81 C |
98 | (strip_info.VT0.rebuilder_rec_case_line d1) = |
99 | (strip_info.VT0.rebuilder_rec_case_line d2) | |
34e49164 | 100 | | (Ast0.TopTag(d1),Ast0.TopTag(d2)) -> |
b1b2de81 C |
101 | (strip_info.VT0.rebuilder_rec_top_level d1) = |
102 | (strip_info.VT0.rebuilder_rec_top_level d2) | |
1be43e12 C |
103 | | (Ast0.IsoWhenTTag(_),_) | (_,Ast0.IsoWhenTTag(_)) -> |
104 | failwith "only for isos within iso phase" | |
105 | | (Ast0.IsoWhenFTag(_),_) | (_,Ast0.IsoWhenFTag(_)) -> | |
106 | failwith "only for isos within iso phase" | |
34e49164 C |
107 | | (Ast0.IsoWhenTag(_),_) | (_,Ast0.IsoWhenTag(_)) -> |
108 | failwith "only for isos within iso phase" | |
109 | | _ -> false | |
110 | ||
708f4980 C |
111 | let term (var1,_,_,_,_,_) = var1 |
112 | let dot_term (var1,_,info,_,_,_) = | |
0708f913 | 113 | ("", var1 ^ (string_of_int info.Ast0.pos_info.Ast0.offset)) |
34e49164 C |
114 | |
115 | ||
116 | type reason = | |
117 | NotPure of Ast0.pure * (string * string) * Ast0.anything | |
118 | | NotPureLength of (string * string) | |
119 | | ContextRequired of Ast0.anything | |
120 | | NonMatch | |
121 | | Braces of Ast0.statement | |
122 | | Position of string * string | |
485bce71 | 123 | | TypeMatch of reason list |
34e49164 | 124 | |
485bce71 | 125 | let rec interpret_reason name line reason printer = |
34e49164 C |
126 | Printf.printf |
127 | "warning: iso %s does not match the code below on line %d\n" name line; | |
128 | printer(); Format.print_newline(); | |
129 | match reason with | |
130 | NotPure(Ast0.Pure,(_,var),nonpure) -> | |
131 | Printf.printf | |
132 | "pure metavariable %s is matched against the following nonpure code:\n" | |
133 | var; | |
134 | Unparse_ast0.unparse_anything nonpure | |
135 | | NotPure(Ast0.Context,(_,var),nonpure) -> | |
136 | Printf.printf | |
137 | "context metavariable %s is matched against the following\nnoncontext code:\n" | |
138 | var; | |
139 | Unparse_ast0.unparse_anything nonpure | |
140 | | NotPure(Ast0.PureContext,(_,var),nonpure) -> | |
141 | Printf.printf | |
142 | "pure context metavariable %s is matched against the following\nnonpure or noncontext code:\n" | |
143 | var; | |
144 | Unparse_ast0.unparse_anything nonpure | |
145 | | NotPureLength((_,var)) -> | |
146 | Printf.printf | |
147 | "pure metavariable %s is matched against too much or too little code\n" | |
148 | var; | |
149 | | ContextRequired(term) -> | |
150 | Printf.printf | |
151 | "the following code matched is not uniformly minus or context,\nor contains a disjunction:\n"; | |
152 | Unparse_ast0.unparse_anything term | |
153 | | Braces(s) -> | |
154 | Printf.printf "braces must be all minus (plus code allowed) or all\ncontext (plus code not allowed in the body) to match:\n"; | |
155 | Unparse_ast0.statement "" s; | |
156 | Format.print_newline() | |
157 | | Position(rule,name) -> | |
158 | Printf.printf "position variable %s.%s conflicts with an isomorphism\n" | |
159 | rule name; | |
485bce71 C |
160 | | TypeMatch reason_list -> |
161 | List.iter (function r -> interpret_reason name line r printer) | |
162 | reason_list | |
34e49164 C |
163 | | _ -> failwith "not possible" |
164 | ||
165 | type 'a either = OK of 'a | Fail of reason | |
166 | ||
167 | let add_binding var exp bindings = | |
168 | let var = term var in | |
169 | let attempt bindings = | |
170 | try | |
171 | let cur = List.assoc var bindings in | |
172 | if anything_equal(exp,cur) then [bindings] else [] | |
173 | with Not_found -> [((var,exp)::bindings)] in | |
174 | match List.concat(List.map attempt bindings) with | |
175 | [] -> Fail NonMatch | |
176 | | x -> OK x | |
177 | ||
178 | let add_dot_binding var exp bindings = | |
179 | let var = dot_term var in | |
180 | let attempt bindings = | |
181 | try | |
182 | let cur = List.assoc var bindings in | |
183 | if anything_equal(exp,cur) then [bindings] else [] | |
184 | with Not_found -> [((var,exp)::bindings)] in | |
185 | match List.concat(List.map attempt bindings) with | |
186 | [] -> Fail NonMatch | |
187 | | x -> OK x | |
188 | ||
189 | (* multi-valued *) | |
190 | let add_multi_dot_binding var exp bindings = | |
191 | let var = dot_term var in | |
192 | let attempt bindings = [((var,exp)::bindings)] in | |
193 | match List.concat(List.map attempt bindings) with | |
194 | [] -> Fail NonMatch | |
195 | | x -> OK x | |
196 | ||
197 | let rec nub ls = | |
198 | match ls with | |
199 | [] -> [] | |
200 | | (x::xs) when (List.mem x xs) -> nub xs | |
201 | | (x::xs) -> x::(nub xs) | |
202 | ||
203 | (* --------------------------------------------------------------------- *) | |
204 | ||
205 | let init_env = [[]] | |
206 | ||
207 | let debug str m binding = | |
208 | let res = m binding in | |
209 | (match res with | |
210 | None -> Printf.printf "%s: failed\n" str | |
211 | | Some binding -> | |
212 | List.iter | |
213 | (function binding -> | |
214 | Printf.printf "%s: %s\n" str | |
215 | (String.concat " " (List.map (function (x,_) -> x) binding))) | |
216 | binding); | |
217 | res | |
218 | ||
219 | let conjunct_bindings | |
220 | (m1 : 'binding -> 'binding either) | |
221 | (m2 : 'binding -> 'binding either) | |
222 | (binding : 'binding) : 'binding either = | |
223 | match m1 binding with Fail(reason) -> Fail(reason) | OK binding -> m2 binding | |
224 | ||
225 | let rec conjunct_many_bindings = function | |
226 | [] -> failwith "not possible" | |
227 | | [x] -> x | |
228 | | x::xs -> conjunct_bindings x (conjunct_many_bindings xs) | |
229 | ||
708f4980 | 230 | let mcode_equal (x,_,_,_,_,_) (y,_,_,_,_,_) = x = y |
34e49164 C |
231 | |
232 | let return b binding = if b then OK binding else Fail NonMatch | |
233 | let return_false reason binding = Fail reason | |
234 | ||
235 | let match_option f t1 t2 = | |
236 | match (t1,t2) with | |
237 | (Some t1, Some t2) -> f t1 t2 | |
238 | | (None, None) -> return true | |
239 | | _ -> return false | |
240 | ||
241 | let bool_match_option f t1 t2 = | |
242 | match (t1,t2) with | |
243 | (Some t1, Some t2) -> f t1 t2 | |
244 | | (None, None) -> true | |
245 | | _ -> false | |
246 | ||
247 | (* context_required is for the example | |
248 | if ( | |
249 | + (int * ) | |
250 | x == NULL) | |
251 | where we can't change x == NULL to eg NULL == x. So there can either be | |
252 | nothing attached to the root or the term has to be all removed. | |
253 | if would be nice if we knew more about the relationship between the - and + | |
254 | code, because in the case where the + code is a separate statement in a | |
255 | sequence, this is not a problem. Perhaps something could be done in | |
256 | insert_plus | |
257 | ||
258 | The example seems strange. Why isn't the cast attached to x? | |
259 | *) | |
260 | let is_context e = | |
261 | !Flag.sgrep_mode2 or (* everything is context for sgrep *) | |
262 | (match Ast0.get_mcodekind e with | |
263 | Ast0.CONTEXT(cell) -> true | |
264 | | _ -> false) | |
265 | ||
266 | (* needs a special case when there is a Disj or an empty DOTS | |
267 | the following stops at the statement level, and gives true if one | |
268 | statement is replaced by another *) | |
269 | let rec is_pure_context s = | |
270 | !Flag.sgrep_mode2 or (* everything is context for sgrep *) | |
271 | (match Ast0.unwrap s with | |
272 | Ast0.Disj(starter,statement_dots_list,mids,ender) -> | |
273 | List.for_all | |
274 | (function x -> | |
275 | match Ast0.undots x with | |
276 | [s] -> is_pure_context s | |
277 | | _ -> false (* could we do better? *)) | |
278 | statement_dots_list | |
279 | | _ -> | |
280 | (match Ast0.get_mcodekind s with | |
281 | Ast0.CONTEXT(mc) -> | |
282 | (match !mc with | |
283 | (Ast.NOTHING,_,_) -> true | |
284 | | _ -> false) | |
285 | | Ast0.MINUS(mc) -> | |
286 | (match !mc with | |
287 | (* do better for the common case of replacing a stmt by another one *) | |
288 | ([[Ast.StatementTag(s)]],_) -> | |
289 | (match Ast.unwrap s with | |
290 | Ast.IfThen(_,_,_) -> false (* potentially dangerous *) | |
291 | | _ -> true) | |
292 | | (_,_) -> false) | |
293 | | _ -> false)) | |
294 | ||
295 | let is_minus e = | |
296 | match Ast0.get_mcodekind e with Ast0.MINUS(cell) -> true | _ -> false | |
297 | ||
298 | let match_list matcher is_list_matcher do_list_match la lb = | |
299 | let rec loop = function | |
300 | ([],[]) -> return true | |
301 | | ([x],lb) when is_list_matcher x -> do_list_match x lb | |
302 | | (x::xs,y::ys) -> conjunct_bindings (matcher x y) (loop (xs,ys)) | |
303 | | _ -> return false in | |
304 | loop (la,lb) | |
305 | ||
306 | let match_maker checks_needed context_required whencode_allowed = | |
307 | ||
308 | let check_mcode pmc cmc binding = | |
309 | if checks_needed | |
310 | then | |
311 | match Ast0.get_pos cmc with | |
312 | (Ast0.MetaPos (name,_,_)) as x -> | |
313 | (match Ast0.get_pos pmc with | |
314 | Ast0.MetaPos (name1,_,_) -> | |
315 | add_binding name1 (Ast0.MetaPosTag x) binding | |
316 | | Ast0.NoMetaPos -> | |
317 | let (rule,name) = Ast0.unwrap_mcode name in | |
318 | Fail (Position(rule,name))) | |
319 | | Ast0.NoMetaPos -> OK binding | |
320 | else OK binding in | |
321 | ||
322 | let match_dots matcher is_list_matcher do_list_match d1 d2 = | |
323 | match (Ast0.unwrap d1, Ast0.unwrap d2) with | |
324 | (Ast0.DOTS(la),Ast0.DOTS(lb)) | |
325 | | (Ast0.CIRCLES(la),Ast0.CIRCLES(lb)) | |
326 | | (Ast0.STARS(la),Ast0.STARS(lb)) -> | |
327 | match_list matcher is_list_matcher (do_list_match d2) la lb | |
328 | | _ -> return false in | |
329 | ||
330 | let is_elist_matcher el = | |
331 | match Ast0.unwrap el with Ast0.MetaExprList(_,_,_) -> true | _ -> false in | |
332 | ||
333 | let is_plist_matcher pl = | |
334 | match Ast0.unwrap pl with Ast0.MetaParamList(_,_,_) -> true | _ -> false in | |
335 | ||
336 | let is_slist_matcher pl = | |
337 | match Ast0.unwrap pl with Ast0.MetaStmtList(_,_) -> true | _ -> false in | |
338 | ||
339 | let no_list _ = false in | |
340 | ||
341 | let build_dots pattern data = | |
342 | match Ast0.unwrap pattern with | |
343 | Ast0.DOTS(_) -> Ast0.rewrap pattern (Ast0.DOTS(data)) | |
344 | | Ast0.CIRCLES(_) -> Ast0.rewrap pattern (Ast0.CIRCLES(data)) | |
345 | | Ast0.STARS(_) -> Ast0.rewrap pattern (Ast0.STARS(data)) in | |
346 | ||
347 | let pure_sp_code = | |
348 | let bind = Ast0.lub_pure in | |
349 | let option_default = Ast0.Context in | |
485bce71 C |
350 | let pure_mcodekind mc = |
351 | if !Flag.sgrep_mode2 | |
352 | then Ast0.PureContext | |
353 | else | |
354 | match mc with | |
355 | Ast0.CONTEXT(mc) -> | |
356 | (match !mc with | |
357 | (Ast.NOTHING,_,_) -> Ast0.PureContext | |
358 | | _ -> Ast0.Context) | |
359 | | Ast0.MINUS(mc) -> | |
360 | (match !mc with ([],_) -> Ast0.Pure | _ -> Ast0.Impure) | |
361 | | _ -> Ast0.Impure in | |
34e49164 C |
362 | let donothing r k e = |
363 | bind (pure_mcodekind (Ast0.get_mcodekind e)) (k e) in | |
364 | ||
365 | let mcode m = pure_mcodekind (Ast0.get_mcode_mcodekind m) in | |
366 | ||
367 | (* a case for everything that has a metavariable *) | |
368 | (* pure is supposed to match only unitary metavars, not anything that | |
369 | contains only unitary metavars *) | |
370 | let ident r k i = | |
371 | bind (bind (pure_mcodekind (Ast0.get_mcodekind i)) (k i)) | |
372 | (match Ast0.unwrap i with | |
373 | Ast0.MetaId(name,_,pure) | Ast0.MetaFunc(name,_,pure) | |
374 | | Ast0.MetaLocalFunc(name,_,pure) -> pure | |
375 | | _ -> Ast0.Impure) in | |
376 | ||
377 | let expression r k e = | |
378 | bind (bind (pure_mcodekind (Ast0.get_mcodekind e)) (k e)) | |
379 | (match Ast0.unwrap e with | |
380 | Ast0.MetaErr(name,_,pure) | |
381 | | Ast0.MetaExpr(name,_,_,_,pure) | Ast0.MetaExprList(name,_,pure) -> | |
382 | pure | |
383 | | _ -> Ast0.Impure) in | |
384 | ||
385 | let typeC r k t = | |
386 | bind (bind (pure_mcodekind (Ast0.get_mcodekind t)) (k t)) | |
387 | (match Ast0.unwrap t with | |
388 | Ast0.MetaType(name,pure) -> pure | |
389 | | _ -> Ast0.Impure) in | |
390 | ||
113803cf C |
391 | let init r k t = |
392 | bind (bind (pure_mcodekind (Ast0.get_mcodekind t)) (k t)) | |
393 | (match Ast0.unwrap t with | |
394 | Ast0.MetaInit(name,pure) -> pure | |
395 | | _ -> Ast0.Impure) in | |
396 | ||
34e49164 C |
397 | let param r k p = |
398 | bind (bind (pure_mcodekind (Ast0.get_mcodekind p)) (k p)) | |
399 | (match Ast0.unwrap p with | |
400 | Ast0.MetaParam(name,pure) | Ast0.MetaParamList(name,_,pure) -> pure | |
401 | | _ -> Ast0.Impure) in | |
402 | ||
403 | let stmt r k s = | |
404 | bind (bind (pure_mcodekind (Ast0.get_mcodekind s)) (k s)) | |
405 | (match Ast0.unwrap s with | |
406 | Ast0.MetaStmt(name,pure) | Ast0.MetaStmtList(name,pure) -> pure | |
407 | | _ -> Ast0.Impure) in | |
408 | ||
b1b2de81 | 409 | V0.flat_combiner bind option_default |
34e49164 | 410 | mcode mcode mcode mcode mcode mcode mcode mcode mcode mcode mcode mcode |
34e49164 | 411 | donothing donothing donothing donothing donothing donothing |
113803cf | 412 | ident expression typeC init param donothing stmt donothing |
34e49164 C |
413 | donothing in |
414 | ||
415 | let add_pure_list_binding name pure is_pure builder1 builder2 lst = | |
416 | match (checks_needed,pure) with | |
417 | (true,Ast0.Pure) | (true,Ast0.Context) | (true,Ast0.PureContext) -> | |
418 | (match lst with | |
419 | [x] -> | |
420 | if (Ast0.lub_pure (is_pure x) pure) = pure | |
421 | then add_binding name (builder1 lst) | |
422 | else return_false (NotPure (pure,term name,builder1 lst)) | |
423 | | _ -> return_false (NotPureLength (term name))) | |
424 | | (false,_) | (_,Ast0.Impure) -> add_binding name (builder2 lst) in | |
425 | ||
426 | let add_pure_binding name pure is_pure builder x = | |
427 | match (checks_needed,pure) with | |
428 | (true,Ast0.Pure) | (true,Ast0.Context) | (true,Ast0.PureContext) -> | |
429 | if (Ast0.lub_pure (is_pure x) pure) = pure | |
430 | then add_binding name (builder x) | |
431 | else return_false (NotPure (pure,term name, builder x)) | |
432 | | (false,_) | (_,Ast0.Impure) -> add_binding name (builder x) in | |
433 | ||
434 | let do_elist_match builder el lst = | |
435 | match Ast0.unwrap el with | |
436 | Ast0.MetaExprList(name,lenname,pure) -> | |
437 | (*how to handle lenname? should it be an option type and always None?*) | |
438 | failwith "expr list pattern not supported in iso" | |
439 | (*add_pure_list_binding name pure | |
440 | pure_sp_code.V0.combiner_expression | |
441 | (function lst -> Ast0.ExprTag(List.hd lst)) | |
442 | (function lst -> Ast0.DotsExprTag(build_dots builder lst)) | |
443 | lst*) | |
444 | | _ -> failwith "not possible" in | |
445 | ||
446 | let do_plist_match builder pl lst = | |
447 | match Ast0.unwrap pl with | |
448 | Ast0.MetaParamList(name,lename,pure) -> | |
449 | failwith "param list pattern not supported in iso" | |
450 | (*add_pure_list_binding name pure | |
451 | pure_sp_code.V0.combiner_parameter | |
452 | (function lst -> Ast0.ParamTag(List.hd lst)) | |
453 | (function lst -> Ast0.DotsParamTag(build_dots builder lst)) | |
454 | lst*) | |
455 | | _ -> failwith "not possible" in | |
456 | ||
457 | let do_slist_match builder sl lst = | |
458 | match Ast0.unwrap sl with | |
459 | Ast0.MetaStmtList(name,pure) -> | |
460 | add_pure_list_binding name pure | |
b1b2de81 | 461 | pure_sp_code.VT0.combiner_rec_statement |
34e49164 C |
462 | (function lst -> Ast0.StmtTag(List.hd lst)) |
463 | (function lst -> Ast0.DotsStmtTag(build_dots builder lst)) | |
464 | lst | |
465 | | _ -> failwith "not possible" in | |
466 | ||
467 | let do_nolist_match _ _ = failwith "not possible" in | |
468 | ||
469 | let rec match_ident pattern id = | |
470 | match Ast0.unwrap pattern with | |
471 | Ast0.MetaId(name,_,pure) -> | |
b1b2de81 | 472 | (add_pure_binding name pure pure_sp_code.VT0.combiner_rec_ident |
34e49164 C |
473 | (function id -> Ast0.IdentTag id) id) |
474 | | Ast0.MetaFunc(name,_,pure) -> failwith "metafunc not supported" | |
475 | | Ast0.MetaLocalFunc(name,_,pure) -> failwith "metalocalfunc not supported" | |
476 | | up -> | |
477 | if not(checks_needed) or not(context_required) or is_context id | |
478 | then | |
479 | match (up,Ast0.unwrap id) with | |
480 | (Ast0.Id(namea),Ast0.Id(nameb)) -> | |
481 | if mcode_equal namea nameb | |
482 | then check_mcode namea nameb | |
483 | else return false | |
484 | | (Ast0.OptIdent(ida),Ast0.OptIdent(idb)) | |
485 | | (Ast0.UniqueIdent(ida),Ast0.UniqueIdent(idb)) -> | |
486 | match_ident ida idb | |
487 | | (_,Ast0.OptIdent(idb)) | |
488 | | (_,Ast0.UniqueIdent(idb)) -> match_ident pattern idb | |
489 | | _ -> return false | |
490 | else return_false (ContextRequired (Ast0.IdentTag id)) in | |
491 | ||
492 | (* should we do something about matching metavars against ...? *) | |
493 | let rec match_expr pattern expr = | |
494 | match Ast0.unwrap pattern with | |
495 | Ast0.MetaExpr(name,_,ty,form,pure) -> | |
496 | let form_ok = | |
497 | match (form,expr) with | |
498 | (Ast.ANY,_) -> true | |
499 | | (Ast.CONST,e) -> | |
500 | let rec matches e = | |
501 | match Ast0.unwrap e with | |
502 | Ast0.Constant(c) -> true | |
503 | | Ast0.Cast(lp,ty,rp,e) -> matches e | |
504 | | Ast0.SizeOfExpr(se,exp) -> true | |
505 | | Ast0.SizeOfType(se,lp,ty,rp) -> true | |
506 | | Ast0.MetaExpr(nm,_,_,Ast.CONST,p) -> | |
507 | (Ast0.lub_pure p pure) = pure | |
508 | | _ -> false in | |
509 | matches e | |
510 | | (Ast.ID,e) | (Ast.LocalID,e) -> | |
511 | let rec matches e = | |
512 | match Ast0.unwrap e with | |
513 | Ast0.Ident(c) -> true | |
514 | | Ast0.Cast(lp,ty,rp,e) -> matches e | |
515 | | Ast0.MetaExpr(nm,_,_,Ast.ID,p) -> | |
516 | (Ast0.lub_pure p pure) = pure | |
517 | | _ -> false in | |
518 | matches e in | |
519 | if form_ok | |
520 | then | |
521 | match ty with | |
522 | Some ts -> | |
523 | if List.exists | |
524 | (function Type_cocci.MetaType(_,_,_) -> true | _ -> false) | |
525 | ts | |
526 | then | |
527 | (match ts with | |
528 | [Type_cocci.MetaType(tyname,_,_)] -> | |
529 | let expty = | |
530 | match (Ast0.unwrap expr,Ast0.get_type expr) with | |
531 | (* easier than updating type inferencer to manage multiple | |
532 | types *) | |
533 | (Ast0.MetaExpr(_,_,Some tts,_,_),_) -> Some tts | |
534 | | (_,Some ty) -> Some [ty] | |
535 | | _ -> None in | |
536 | (match expty with | |
537 | Some expty -> | |
538 | let tyname = Ast0.rewrap_mcode name tyname in | |
485bce71 C |
539 | conjunct_bindings |
540 | (add_pure_binding name pure | |
b1b2de81 | 541 | pure_sp_code.VT0.combiner_rec_expression |
485bce71 C |
542 | (function expr -> Ast0.ExprTag expr) |
543 | expr) | |
544 | (function bindings -> | |
545 | let attempts = | |
546 | List.map | |
547 | (function expty -> | |
548 | (try | |
549 | add_pure_binding tyname Ast0.Impure | |
550 | (function _ -> Ast0.Impure) | |
551 | (function ty -> Ast0.TypeCTag ty) | |
552 | (Ast0.rewrap expr | |
553 | (Ast0.reverse_type expty)) | |
554 | bindings | |
555 | with Ast0.TyConv -> | |
556 | Printf.printf | |
557 | "warning: unconvertible type"; | |
558 | return false bindings)) | |
559 | expty in | |
560 | if List.exists | |
561 | (function Fail _ -> false | OK x -> true) | |
562 | attempts | |
563 | then | |
564 | (* not sure why this is ok. can there be more | |
565 | than one OK? *) | |
566 | OK (List.concat | |
567 | (List.map | |
568 | (function Fail _ -> [] | OK x -> x) | |
569 | attempts)) | |
570 | else | |
571 | Fail | |
572 | (TypeMatch | |
573 | (List.map | |
574 | (function | |
575 | Fail r -> r | |
576 | | OK x -> failwith "not possible") | |
577 | attempts))) | |
578 | | _ -> | |
34e49164 C |
579 | (*Printf.printf |
580 | "warning: type metavar can only match one type";*) | |
581 | return false) | |
582 | | _ -> | |
583 | failwith | |
584 | "mixture of metatype and other types not supported") | |
585 | else | |
586 | let expty = Ast0.get_type expr in | |
587 | if List.exists (function t -> Type_cocci.compatible t expty) ts | |
588 | then | |
589 | add_pure_binding name pure | |
b1b2de81 | 590 | pure_sp_code.VT0.combiner_rec_expression |
34e49164 C |
591 | (function expr -> Ast0.ExprTag expr) |
592 | expr | |
593 | else return false | |
594 | | None -> | |
b1b2de81 | 595 | add_pure_binding name pure pure_sp_code.VT0.combiner_rec_expression |
34e49164 C |
596 | (function expr -> Ast0.ExprTag expr) |
597 | expr | |
598 | else return false | |
599 | | Ast0.MetaErr(namea,_,pure) -> failwith "metaerr not supported" | |
600 | | Ast0.MetaExprList(_,_,_) -> failwith "metaexprlist not supported" | |
601 | | up -> | |
602 | if not(checks_needed) or not(context_required) or is_context expr | |
603 | then | |
604 | match (up,Ast0.unwrap expr) with | |
605 | (Ast0.Ident(ida),Ast0.Ident(idb)) -> | |
606 | match_ident ida idb | |
607 | | (Ast0.Constant(consta),Ast0.Constant(constb)) -> | |
608 | if mcode_equal consta constb | |
609 | then check_mcode consta constb | |
610 | else return false | |
611 | | (Ast0.FunCall(fna,lp1,argsa,rp1),Ast0.FunCall(fnb,lp,argsb,rp)) -> | |
612 | conjunct_many_bindings | |
613 | [check_mcode lp1 lp; check_mcode rp1 rp; match_expr fna fnb; | |
614 | match_dots match_expr is_elist_matcher do_elist_match | |
615 | argsa argsb] | |
616 | | (Ast0.Assignment(lefta,opa,righta,_), | |
617 | Ast0.Assignment(leftb,opb,rightb,_)) -> | |
618 | if mcode_equal opa opb | |
619 | then | |
620 | conjunct_many_bindings | |
621 | [check_mcode opa opb; match_expr lefta leftb; | |
622 | match_expr righta rightb] | |
623 | else return false | |
624 | | (Ast0.CondExpr(exp1a,lp1,exp2a,rp1,exp3a), | |
625 | Ast0.CondExpr(exp1b,lp,exp2b,rp,exp3b)) -> | |
626 | conjunct_many_bindings | |
627 | [check_mcode lp1 lp; check_mcode rp1 rp; | |
628 | match_expr exp1a exp1b; match_option match_expr exp2a exp2b; | |
629 | match_expr exp3a exp3b] | |
630 | | (Ast0.Postfix(expa,opa),Ast0.Postfix(expb,opb)) -> | |
631 | if mcode_equal opa opb | |
632 | then | |
633 | conjunct_bindings (check_mcode opa opb) (match_expr expa expb) | |
634 | else return false | |
635 | | (Ast0.Infix(expa,opa),Ast0.Infix(expb,opb)) -> | |
636 | if mcode_equal opa opb | |
637 | then | |
638 | conjunct_bindings (check_mcode opa opb) (match_expr expa expb) | |
639 | else return false | |
640 | | (Ast0.Unary(expa,opa),Ast0.Unary(expb,opb)) -> | |
641 | if mcode_equal opa opb | |
642 | then | |
643 | conjunct_bindings (check_mcode opa opb) (match_expr expa expb) | |
644 | else return false | |
645 | | (Ast0.Binary(lefta,opa,righta),Ast0.Binary(leftb,opb,rightb)) -> | |
646 | if mcode_equal opa opb | |
647 | then | |
648 | conjunct_many_bindings | |
649 | [check_mcode opa opb; match_expr lefta leftb; | |
650 | match_expr righta rightb] | |
651 | else return false | |
652 | | (Ast0.Paren(lp1,expa,rp1),Ast0.Paren(lp,expb,rp)) -> | |
653 | conjunct_many_bindings | |
654 | [check_mcode lp1 lp; check_mcode rp1 rp; match_expr expa expb] | |
655 | | (Ast0.ArrayAccess(exp1a,lb1,exp2a,rb1), | |
656 | Ast0.ArrayAccess(exp1b,lb,exp2b,rb)) -> | |
657 | conjunct_many_bindings | |
658 | [check_mcode lb1 lb; check_mcode rb1 rb; | |
659 | match_expr exp1a exp1b; match_expr exp2a exp2b] | |
660 | | (Ast0.RecordAccess(expa,opa,fielda), | |
661 | Ast0.RecordAccess(expb,op,fieldb)) | |
662 | | (Ast0.RecordPtAccess(expa,opa,fielda), | |
663 | Ast0.RecordPtAccess(expb,op,fieldb)) -> | |
664 | conjunct_many_bindings | |
665 | [check_mcode opa op; match_expr expa expb; | |
666 | match_ident fielda fieldb] | |
667 | | (Ast0.Cast(lp1,tya,rp1,expa),Ast0.Cast(lp,tyb,rp,expb)) -> | |
668 | conjunct_many_bindings | |
669 | [check_mcode lp1 lp; check_mcode rp1 rp; | |
670 | match_typeC tya tyb; match_expr expa expb] | |
671 | | (Ast0.SizeOfExpr(szf1,expa),Ast0.SizeOfExpr(szf,expb)) -> | |
672 | conjunct_bindings (check_mcode szf1 szf) (match_expr expa expb) | |
673 | | (Ast0.SizeOfType(szf1,lp1,tya,rp1), | |
674 | Ast0.SizeOfType(szf,lp,tyb,rp)) -> | |
675 | conjunct_many_bindings | |
676 | [check_mcode lp1 lp; check_mcode rp1 rp; | |
677 | check_mcode szf1 szf; match_typeC tya tyb] | |
678 | | (Ast0.TypeExp(tya),Ast0.TypeExp(tyb)) -> | |
679 | match_typeC tya tyb | |
680 | | (Ast0.EComma(cm1),Ast0.EComma(cm)) -> check_mcode cm1 cm | |
681 | | (Ast0.DisjExpr(_,expsa,_,_),_) -> | |
682 | failwith "not allowed in the pattern of an isomorphism" | |
683 | | (Ast0.NestExpr(_,exp_dotsa,_,_,_),_) -> | |
684 | failwith "not allowed in the pattern of an isomorphism" | |
685 | | (Ast0.Edots(d,None),Ast0.Edots(d1,None)) | |
686 | | (Ast0.Ecircles(d,None),Ast0.Ecircles(d1,None)) | |
687 | | (Ast0.Estars(d,None),Ast0.Estars(d1,None)) -> check_mcode d d1 | |
688 | | (Ast0.Edots(ed,None),Ast0.Edots(ed1,Some wc)) | |
689 | | (Ast0.Ecircles(ed,None),Ast0.Ecircles(ed1,Some wc)) | |
690 | | (Ast0.Estars(ed,None),Ast0.Estars(ed1,Some wc)) -> | |
691 | (* hope that mcode of edots is unique somehow *) | |
692 | conjunct_bindings (check_mcode ed ed1) | |
693 | (let (edots_whencode_allowed,_,_) = whencode_allowed in | |
694 | if edots_whencode_allowed | |
695 | then add_dot_binding ed (Ast0.ExprTag wc) | |
696 | else | |
697 | (Printf.printf | |
698 | "warning: not applying iso because of whencode"; | |
699 | return false)) | |
700 | | (Ast0.Edots(_,Some _),_) | (Ast0.Ecircles(_,Some _),_) | |
701 | | (Ast0.Estars(_,Some _),_) -> | |
702 | failwith "whencode not allowed in a pattern1" | |
703 | | (Ast0.OptExp(expa),Ast0.OptExp(expb)) | |
704 | | (Ast0.UniqueExp(expa),Ast0.UniqueExp(expb)) -> match_expr expa expb | |
705 | | (_,Ast0.OptExp(expb)) | |
706 | | (_,Ast0.UniqueExp(expb)) -> match_expr pattern expb | |
707 | | _ -> return false | |
708 | else return_false (ContextRequired (Ast0.ExprTag expr)) | |
faf9a90c | 709 | |
34e49164 C |
710 | (* the special case for function types prevents the eg T X; -> T X = E; iso |
711 | from applying, which doesn't seem very relevant, but it also avoids a | |
712 | mysterious bug that is obtained with eg int attach(...); *) | |
713 | and match_typeC pattern t = | |
714 | match Ast0.unwrap pattern with | |
715 | Ast0.MetaType(name,pure) -> | |
716 | (match Ast0.unwrap t with | |
717 | Ast0.FunctionType(tya,lp1a,paramsa,rp1a) -> return false | |
718 | | _ -> | |
b1b2de81 | 719 | add_pure_binding name pure pure_sp_code.VT0.combiner_rec_typeC |
34e49164 C |
720 | (function ty -> Ast0.TypeCTag ty) |
721 | t) | |
722 | | up -> | |
723 | if not(checks_needed) or not(context_required) or is_context t | |
724 | then | |
725 | match (up,Ast0.unwrap t) with | |
726 | (Ast0.ConstVol(cva,tya),Ast0.ConstVol(cvb,tyb)) -> | |
727 | if mcode_equal cva cvb | |
728 | then | |
729 | conjunct_bindings (check_mcode cva cvb) (match_typeC tya tyb) | |
730 | else return false | |
faf9a90c C |
731 | | (Ast0.BaseType(tya,stringsa),Ast0.BaseType(tyb,stringsb)) -> |
732 | if tya = tyb | |
34e49164 | 733 | then |
faf9a90c C |
734 | match_list check_mcode |
735 | (function _ -> false) (function _ -> failwith "") | |
736 | stringsa stringsb | |
34e49164 | 737 | else return false |
faf9a90c | 738 | | (Ast0.Signed(signa,tya),Ast0.Signed(signb,tyb)) -> |
34e49164 | 739 | if mcode_equal signa signb |
faf9a90c C |
740 | then |
741 | conjunct_bindings (check_mcode signa signb) | |
742 | (match_option match_typeC tya tyb) | |
34e49164 C |
743 | else return false |
744 | | (Ast0.Pointer(tya,star1),Ast0.Pointer(tyb,star)) -> | |
745 | conjunct_bindings (check_mcode star1 star) (match_typeC tya tyb) | |
746 | | (Ast0.FunctionPointer(tya,lp1a,stara,rp1a,lp2a,paramsa,rp2a), | |
747 | Ast0.FunctionPointer(tyb,lp1b,starb,rp1b,lp2b,paramsb,rp2b)) -> | |
748 | conjunct_many_bindings | |
749 | [check_mcode stara starb; check_mcode lp1a lp1b; | |
750 | check_mcode rp1a rp1b; check_mcode lp2a lp2b; | |
751 | check_mcode rp2a rp2b; match_typeC tya tyb; | |
752 | match_dots match_param is_plist_matcher | |
753 | do_plist_match paramsa paramsb] | |
754 | | (Ast0.FunctionType(tya,lp1a,paramsa,rp1a), | |
755 | Ast0.FunctionType(tyb,lp1b,paramsb,rp1b)) -> | |
756 | conjunct_many_bindings | |
757 | [check_mcode lp1a lp1b; check_mcode rp1a rp1b; | |
758 | match_option match_typeC tya tyb; | |
759 | match_dots match_param is_plist_matcher do_plist_match | |
760 | paramsa paramsb] | |
761 | | (Ast0.Array(tya,lb1,sizea,rb1),Ast0.Array(tyb,lb,sizeb,rb)) -> | |
762 | conjunct_many_bindings | |
763 | [check_mcode lb1 lb; check_mcode rb1 rb; | |
764 | match_typeC tya tyb; match_option match_expr sizea sizeb] | |
faf9a90c C |
765 | | (Ast0.EnumName(kinda,namea),Ast0.EnumName(kindb,nameb)) -> |
766 | conjunct_bindings (check_mcode kinda kindb) | |
767 | (match_ident namea nameb) | |
34e49164 C |
768 | | (Ast0.StructUnionName(kinda,Some namea), |
769 | Ast0.StructUnionName(kindb,Some nameb)) -> | |
770 | if mcode_equal kinda kindb | |
771 | then | |
772 | conjunct_bindings (check_mcode kinda kindb) | |
773 | (match_ident namea nameb) | |
774 | else return false | |
775 | | (Ast0.StructUnionDef(tya,lb1,declsa,rb1), | |
776 | Ast0.StructUnionDef(tyb,lb,declsb,rb)) -> | |
777 | conjunct_many_bindings | |
778 | [check_mcode lb1 lb; check_mcode rb1 rb; | |
779 | match_typeC tya tyb; | |
780 | match_dots match_decl no_list do_nolist_match declsa declsb] | |
781 | | (Ast0.TypeName(namea),Ast0.TypeName(nameb)) -> | |
782 | if mcode_equal namea nameb | |
783 | then check_mcode namea nameb | |
784 | else return false | |
785 | | (Ast0.DisjType(_,typesa,_,_),Ast0.DisjType(_,typesb,_,_)) -> | |
786 | failwith "not allowed in the pattern of an isomorphism" | |
787 | | (Ast0.OptType(tya),Ast0.OptType(tyb)) | |
788 | | (Ast0.UniqueType(tya),Ast0.UniqueType(tyb)) -> match_typeC tya tyb | |
789 | | (_,Ast0.OptType(tyb)) | |
790 | | (_,Ast0.UniqueType(tyb)) -> match_typeC pattern tyb | |
791 | | _ -> return false | |
792 | else return_false (ContextRequired (Ast0.TypeCTag t)) | |
faf9a90c | 793 | |
34e49164 C |
794 | and match_decl pattern d = |
795 | if not(checks_needed) or not(context_required) or is_context d | |
796 | then | |
797 | match (Ast0.unwrap pattern,Ast0.unwrap d) with | |
798 | (Ast0.Init(stga,tya,ida,eq1,inia,sc1), | |
799 | Ast0.Init(stgb,tyb,idb,eq,inib,sc)) -> | |
800 | if bool_match_option mcode_equal stga stgb | |
801 | then | |
802 | conjunct_many_bindings | |
803 | [check_mcode eq1 eq; check_mcode sc1 sc; | |
804 | match_option check_mcode stga stgb; | |
805 | match_typeC tya tyb; match_ident ida idb; | |
806 | match_init inia inib] | |
807 | else return false | |
808 | | (Ast0.UnInit(stga,tya,ida,sc1),Ast0.UnInit(stgb,tyb,idb,sc)) -> | |
809 | if bool_match_option mcode_equal stga stgb | |
810 | then | |
811 | conjunct_many_bindings | |
812 | [check_mcode sc1 sc; match_option check_mcode stga stgb; | |
813 | match_typeC tya tyb; match_ident ida idb] | |
814 | else return false | |
815 | | (Ast0.MacroDecl(namea,lp1,argsa,rp1,sc1), | |
816 | Ast0.MacroDecl(nameb,lp,argsb,rp,sc)) -> | |
817 | conjunct_many_bindings | |
818 | [match_ident namea nameb; | |
819 | check_mcode lp1 lp; check_mcode rp1 rp; | |
820 | check_mcode sc1 sc; | |
821 | match_dots match_expr is_elist_matcher do_elist_match | |
822 | argsa argsb] | |
823 | | (Ast0.TyDecl(tya,sc1),Ast0.TyDecl(tyb,sc)) -> | |
824 | conjunct_bindings (check_mcode sc1 sc) (match_typeC tya tyb) | |
825 | | (Ast0.Typedef(stga,tya,ida,sc1),Ast0.Typedef(stgb,tyb,idb,sc)) -> | |
826 | conjunct_bindings (check_mcode sc1 sc) | |
827 | (conjunct_bindings (match_typeC tya tyb) (match_typeC ida idb)) | |
828 | | (Ast0.DisjDecl(_,declsa,_,_),Ast0.DisjDecl(_,declsb,_,_)) -> | |
829 | failwith "not allowed in the pattern of an isomorphism" | |
830 | | (Ast0.Ddots(d1,None),Ast0.Ddots(d,None)) -> check_mcode d1 d | |
831 | | (Ast0.Ddots(dd,None),Ast0.Ddots(d,Some wc)) -> | |
832 | conjunct_bindings (check_mcode dd d) | |
833 | (* hope that mcode of ddots is unique somehow *) | |
834 | (let (ddots_whencode_allowed,_,_) = whencode_allowed in | |
835 | if ddots_whencode_allowed | |
836 | then add_dot_binding dd (Ast0.DeclTag wc) | |
837 | else | |
838 | (Printf.printf "warning: not applying iso because of whencode"; | |
839 | return false)) | |
840 | | (Ast0.Ddots(_,Some _),_) -> | |
841 | failwith "whencode not allowed in a pattern1" | |
faf9a90c | 842 | |
34e49164 C |
843 | | (Ast0.OptDecl(decla),Ast0.OptDecl(declb)) |
844 | | (Ast0.UniqueDecl(decla),Ast0.UniqueDecl(declb)) -> | |
845 | match_decl decla declb | |
846 | | (_,Ast0.OptDecl(declb)) | |
847 | | (_,Ast0.UniqueDecl(declb)) -> | |
848 | match_decl pattern declb | |
849 | | _ -> return false | |
850 | else return_false (ContextRequired (Ast0.DeclTag d)) | |
faf9a90c | 851 | |
34e49164 | 852 | and match_init pattern i = |
113803cf C |
853 | match Ast0.unwrap pattern with |
854 | Ast0.MetaInit(name,pure) -> | |
b1b2de81 | 855 | add_pure_binding name pure pure_sp_code.VT0.combiner_rec_initialiser |
113803cf C |
856 | (function ini -> Ast0.InitTag ini) |
857 | i | |
858 | | up -> | |
859 | if not(checks_needed) or not(context_required) or is_context i | |
860 | then | |
861 | match (up,Ast0.unwrap i) with | |
862 | (Ast0.InitExpr(expa),Ast0.InitExpr(expb)) -> | |
863 | match_expr expa expb | |
864 | | (Ast0.InitList(lb1,initlista,rb1),Ast0.InitList(lb,initlistb,rb)) | |
865 | -> | |
866 | conjunct_many_bindings | |
867 | [check_mcode lb1 lb; check_mcode rb1 rb; | |
868 | match_dots match_init no_list do_nolist_match | |
869 | initlista initlistb] | |
870 | | (Ast0.InitGccExt(designators1,e1,inia), | |
871 | Ast0.InitGccExt(designators2,e2,inib)) -> | |
872 | conjunct_many_bindings | |
873 | [match_list match_designator | |
874 | (function _ -> false) (function _ -> failwith "") | |
875 | designators1 designators2; | |
876 | check_mcode e1 e2; | |
877 | match_init inia inib] | |
878 | | (Ast0.InitGccName(namea,c1,inia),Ast0.InitGccName(nameb,c,inib)) -> | |
879 | conjunct_many_bindings | |
880 | [check_mcode c1 c; match_ident namea nameb; | |
881 | match_init inia inib] | |
882 | | (Ast0.IComma(c1),Ast0.IComma(c)) -> check_mcode c1 c | |
883 | | (Ast0.Idots(d1,None),Ast0.Idots(d,None)) -> check_mcode d1 d | |
884 | | (Ast0.Idots(id,None),Ast0.Idots(d,Some wc)) -> | |
885 | conjunct_bindings (check_mcode id d) | |
34e49164 | 886 | (* hope that mcode of edots is unique somehow *) |
113803cf C |
887 | (let (_,idots_whencode_allowed,_) = whencode_allowed in |
888 | if idots_whencode_allowed | |
889 | then add_dot_binding id (Ast0.InitTag wc) | |
890 | else | |
891 | (Printf.printf | |
892 | "warning: not applying iso because of whencode"; | |
893 | return false)) | |
894 | | (Ast0.Idots(_,Some _),_) -> | |
895 | failwith "whencode not allowed in a pattern2" | |
896 | | (Ast0.OptIni(ia),Ast0.OptIni(ib)) | |
897 | | (Ast0.UniqueIni(ia),Ast0.UniqueIni(ib)) -> match_init ia ib | |
898 | | (_,Ast0.OptIni(ib)) | |
899 | | (_,Ast0.UniqueIni(ib)) -> match_init pattern ib | |
900 | | _ -> return false | |
901 | else return_false (ContextRequired (Ast0.InitTag i)) | |
902 | ||
903 | and match_designator pattern d = | |
904 | match (pattern,d) with | |
905 | (Ast0.DesignatorField(dota,ida),Ast0.DesignatorField(dotb,idb)) -> | |
906 | conjunct_bindings (check_mcode dota dotb) (match_ident ida idb) | |
907 | | (Ast0.DesignatorIndex(lba,expa,rba), | |
908 | Ast0.DesignatorIndex(lbb,expb,rbb)) -> | |
909 | conjunct_many_bindings | |
910 | [check_mcode lba lbb; match_expr expa expb; | |
911 | check_mcode rba rbb] | |
912 | | (Ast0.DesignatorRange(lba,mina,dotsa,maxa,rba), | |
913 | Ast0.DesignatorRange(lbb,minb,dotsb,maxb,rbb)) -> | |
914 | conjunct_many_bindings | |
915 | [check_mcode lba lbb; match_expr mina minb; | |
916 | check_mcode dotsa dotsb; match_expr maxa maxb; | |
917 | check_mcode rba rbb] | |
918 | | _ -> return false | |
faf9a90c | 919 | |
34e49164 C |
920 | and match_param pattern p = |
921 | match Ast0.unwrap pattern with | |
922 | Ast0.MetaParam(name,pure) -> | |
b1b2de81 | 923 | add_pure_binding name pure pure_sp_code.VT0.combiner_rec_parameter |
34e49164 C |
924 | (function p -> Ast0.ParamTag p) |
925 | p | |
926 | | Ast0.MetaParamList(name,_,pure) -> failwith "metaparamlist not supported" | |
927 | | up -> | |
928 | if not(checks_needed) or not(context_required) or is_context p | |
929 | then | |
930 | match (up,Ast0.unwrap p) with | |
931 | (Ast0.VoidParam(tya),Ast0.VoidParam(tyb)) -> match_typeC tya tyb | |
932 | | (Ast0.Param(tya,ida),Ast0.Param(tyb,idb)) -> | |
933 | conjunct_bindings (match_typeC tya tyb) | |
934 | (match_option match_ident ida idb) | |
935 | | (Ast0.PComma(c1),Ast0.PComma(c)) -> check_mcode c1 c | |
936 | | (Ast0.Pdots(d1),Ast0.Pdots(d)) | |
937 | | (Ast0.Pcircles(d1),Ast0.Pcircles(d)) -> check_mcode d1 d | |
938 | | (Ast0.OptParam(parama),Ast0.OptParam(paramb)) | |
939 | | (Ast0.UniqueParam(parama),Ast0.UniqueParam(paramb)) -> | |
940 | match_param parama paramb | |
941 | | (_,Ast0.OptParam(paramb)) | |
942 | | (_,Ast0.UniqueParam(paramb)) -> match_param pattern paramb | |
943 | | _ -> return false | |
944 | else return_false (ContextRequired (Ast0.ParamTag p)) | |
faf9a90c | 945 | |
34e49164 C |
946 | and match_statement pattern s = |
947 | match Ast0.unwrap pattern with | |
948 | Ast0.MetaStmt(name,pure) -> | |
949 | (match Ast0.unwrap s with | |
950 | Ast0.Dots(_,_) | Ast0.Circles(_,_) | Ast0.Stars(_,_) -> | |
951 | return false (* ... is not a single statement *) | |
952 | | _ -> | |
b1b2de81 | 953 | add_pure_binding name pure pure_sp_code.VT0.combiner_rec_statement |
34e49164 C |
954 | (function ty -> Ast0.StmtTag ty) |
955 | s) | |
956 | | Ast0.MetaStmtList(name,pure) -> failwith "metastmtlist not supported" | |
957 | | up -> | |
958 | if not(checks_needed) or not(context_required) or is_context s | |
959 | then | |
960 | match (up,Ast0.unwrap s) with | |
961 | (Ast0.FunDecl(_,fninfoa,namea,lp1,paramsa,rp1,lb1,bodya,rb1), | |
962 | Ast0.FunDecl(_,fninfob,nameb,lp,paramsb,rp,lb,bodyb,rb)) -> | |
963 | conjunct_many_bindings | |
964 | [check_mcode lp1 lp; check_mcode rp1 rp; | |
965 | check_mcode lb1 lb; check_mcode rb1 rb; | |
966 | match_fninfo fninfoa fninfob; match_ident namea nameb; | |
967 | match_dots match_param is_plist_matcher do_plist_match | |
968 | paramsa paramsb; | |
969 | match_dots match_statement is_slist_matcher do_slist_match | |
970 | bodya bodyb] | |
971 | | (Ast0.Decl(_,decla),Ast0.Decl(_,declb)) -> | |
972 | match_decl decla declb | |
973 | | (Ast0.Seq(lb1,bodya,rb1),Ast0.Seq(lb,bodyb,rb)) -> | |
974 | (* seqs can only match if they are all minus (plus code | |
975 | allowed) or all context (plus code not allowed in the body). | |
976 | we could be more permissive if the expansions of the isos are | |
977 | also all seqs, but this would be hard to check except at top | |
978 | level, and perhaps not worth checking even in that case. | |
979 | Overall, the issue is that braces are used where single | |
980 | statements are required, and something not satisfying these | |
981 | conditions can cause a single statement to become a | |
982 | non-single statement after the transformation. | |
983 | ||
984 | example: if { ... -foo(); ... } | |
985 | if we let the sequence convert to just -foo(); | |
986 | then we produce invalid code. For some reason, | |
987 | single_statement can't deal with this case, perhaps because | |
988 | it starts introducing too many braces? don't remember the | |
989 | exact problem... | |
990 | *) | |
991 | conjunct_bindings (check_mcode lb1 lb) | |
992 | (conjunct_bindings (check_mcode rb1 rb) | |
993 | (if not(checks_needed) or is_minus s or | |
994 | (is_context s && | |
995 | List.for_all is_pure_context (Ast0.undots bodyb)) | |
996 | then | |
997 | match_dots match_statement is_slist_matcher do_slist_match | |
998 | bodya bodyb | |
999 | else return_false (Braces(s)))) | |
1000 | | (Ast0.ExprStatement(expa,sc1),Ast0.ExprStatement(expb,sc)) -> | |
1001 | conjunct_bindings (check_mcode sc1 sc) (match_expr expa expb) | |
1002 | | (Ast0.IfThen(if1,lp1,expa,rp1,branch1a,_), | |
1003 | Ast0.IfThen(if2,lp2,expb,rp2,branch1b,_)) -> | |
1004 | conjunct_many_bindings | |
1005 | [check_mcode if1 if2; check_mcode lp1 lp2; | |
1006 | check_mcode rp1 rp2; | |
1007 | match_expr expa expb; | |
1008 | match_statement branch1a branch1b] | |
1009 | | (Ast0.IfThenElse(if1,lp1,expa,rp1,branch1a,e1,branch2a,_), | |
1010 | Ast0.IfThenElse(if2,lp2,expb,rp2,branch1b,e2,branch2b,_)) -> | |
1011 | conjunct_many_bindings | |
1012 | [check_mcode if1 if2; check_mcode lp1 lp2; | |
1013 | check_mcode rp1 rp2; check_mcode e1 e2; | |
1014 | match_expr expa expb; | |
1015 | match_statement branch1a branch1b; | |
1016 | match_statement branch2a branch2b] | |
1017 | | (Ast0.While(w1,lp1,expa,rp1,bodya,_), | |
1018 | Ast0.While(w,lp,expb,rp,bodyb,_)) -> | |
1019 | conjunct_many_bindings | |
1020 | [check_mcode w1 w; check_mcode lp1 lp; | |
1021 | check_mcode rp1 rp; match_expr expa expb; | |
1022 | match_statement bodya bodyb] | |
1023 | | (Ast0.Do(d1,bodya,w1,lp1,expa,rp1,_), | |
1024 | Ast0.Do(d,bodyb,w,lp,expb,rp,_)) -> | |
1025 | conjunct_many_bindings | |
1026 | [check_mcode d1 d; check_mcode w1 w; check_mcode lp1 lp; | |
1027 | check_mcode rp1 rp; match_statement bodya bodyb; | |
1028 | match_expr expa expb] | |
1029 | | (Ast0.For(f1,lp1,e1a,sc1a,e2a,sc2a,e3a,rp1,bodya,_), | |
1030 | Ast0.For(f,lp,e1b,sc1b,e2b,sc2b,e3b,rp,bodyb,_)) -> | |
1031 | conjunct_many_bindings | |
1032 | [check_mcode f1 f; check_mcode lp1 lp; check_mcode sc1a sc1b; | |
1033 | check_mcode sc2a sc2b; check_mcode rp1 rp; | |
1034 | match_option match_expr e1a e1b; | |
1035 | match_option match_expr e2a e2b; | |
1036 | match_option match_expr e3a e3b; | |
1037 | match_statement bodya bodyb] | |
1038 | | (Ast0.Iterator(nma,lp1,argsa,rp1,bodya,_), | |
1039 | Ast0.Iterator(nmb,lp,argsb,rp,bodyb,_)) -> | |
1040 | conjunct_many_bindings | |
1041 | [match_ident nma nmb; | |
1042 | check_mcode lp1 lp; check_mcode rp1 rp; | |
1043 | match_dots match_expr is_elist_matcher do_elist_match | |
1044 | argsa argsb; | |
1045 | match_statement bodya bodyb] | |
1046 | | (Ast0.Switch(s1,lp1,expa,rp1,lb1,casesa,rb1), | |
1047 | Ast0.Switch(s,lp,expb,rp,lb,casesb,rb)) -> | |
1048 | conjunct_many_bindings | |
1049 | [check_mcode s1 s; check_mcode lp1 lp; check_mcode rp1 rp; | |
1050 | check_mcode lb1 lb; check_mcode rb1 rb; | |
1051 | match_expr expa expb; | |
1052 | match_dots match_case_line no_list do_nolist_match | |
1053 | casesa casesb] | |
1054 | | (Ast0.Break(b1,sc1),Ast0.Break(b,sc)) | |
1055 | | (Ast0.Continue(b1,sc1),Ast0.Continue(b,sc)) -> | |
1056 | conjunct_bindings (check_mcode b1 b) (check_mcode sc1 sc) | |
1057 | | (Ast0.Label(l1,c1),Ast0.Label(l2,c)) -> | |
1058 | conjunct_bindings (match_ident l1 l2) (check_mcode c1 c) | |
1059 | | (Ast0.Goto(g1,l1,sc1),Ast0.Goto(g,l2,sc)) -> | |
1060 | conjunct_many_bindings | |
1061 | [check_mcode g1 g; check_mcode sc1 sc; match_ident l1 l2] | |
1062 | | (Ast0.Return(r1,sc1),Ast0.Return(r,sc)) -> | |
1063 | conjunct_bindings (check_mcode r1 r) (check_mcode sc1 sc) | |
1064 | | (Ast0.ReturnExpr(r1,expa,sc1),Ast0.ReturnExpr(r,expb,sc)) -> | |
1065 | conjunct_many_bindings | |
1066 | [check_mcode r1 r; check_mcode sc1 sc; match_expr expa expb] | |
1067 | | (Ast0.Disj(_,statement_dots_lista,_,_),_) -> | |
1068 | failwith "disj not supported in patterns" | |
1069 | | (Ast0.Nest(_,stmt_dotsa,_,_,_),_) -> | |
1070 | failwith "nest not supported in patterns" | |
1071 | | (Ast0.Exp(expa),Ast0.Exp(expb)) -> match_expr expa expb | |
1072 | | (Ast0.TopExp(expa),Ast0.TopExp(expb)) -> match_expr expa expb | |
1073 | | (Ast0.Exp(expa),Ast0.TopExp(expb)) -> match_expr expa expb | |
1be43e12 | 1074 | | (Ast0.TopInit(inita),Ast0.TopInit(initb)) -> match_init inita initb |
34e49164 C |
1075 | | (Ast0.Ty(tya),Ast0.Ty(tyb)) -> match_typeC tya tyb |
1076 | | (Ast0.Dots(d,[]),Ast0.Dots(d1,wc)) | |
1077 | | (Ast0.Circles(d,[]),Ast0.Circles(d1,wc)) | |
1078 | | (Ast0.Stars(d,[]),Ast0.Stars(d1,wc)) -> | |
1079 | (match wc with | |
1080 | [] -> check_mcode d d1 | |
1081 | | _ -> | |
1082 | let (_,_,dots_whencode_allowed) = whencode_allowed in | |
1083 | if dots_whencode_allowed | |
1084 | then | |
1085 | conjunct_bindings (check_mcode d d1) | |
1086 | (List.fold_left | |
1087 | (function prev -> | |
1088 | function | |
1089 | | Ast0.WhenNot wc -> | |
1090 | conjunct_bindings prev | |
1091 | (add_multi_dot_binding d | |
1092 | (Ast0.DotsStmtTag wc)) | |
1093 | | Ast0.WhenAlways wc -> | |
1094 | conjunct_bindings prev | |
1095 | (add_multi_dot_binding d (Ast0.StmtTag wc)) | |
1be43e12 C |
1096 | | Ast0.WhenNotTrue wc -> |
1097 | conjunct_bindings prev | |
1098 | (add_multi_dot_binding d | |
1099 | (Ast0.IsoWhenTTag wc)) | |
1100 | | Ast0.WhenNotFalse wc -> | |
1101 | conjunct_bindings prev | |
1102 | (add_multi_dot_binding d | |
1103 | (Ast0.IsoWhenFTag wc)) | |
34e49164 C |
1104 | | Ast0.WhenModifier(x) -> |
1105 | conjunct_bindings prev | |
1106 | (add_multi_dot_binding d | |
1107 | (Ast0.IsoWhenTag x))) | |
1108 | (return true) wc) | |
1109 | else | |
1110 | (Printf.printf | |
1111 | "warning: not applying iso because of whencode"; | |
1112 | return false)) | |
1113 | | (Ast0.Dots(_,_::_),_) | (Ast0.Circles(_,_::_),_) | |
1114 | | (Ast0.Stars(_,_::_),_) -> | |
1115 | failwith "whencode not allowed in a pattern3" | |
1116 | | (Ast0.OptStm(rea),Ast0.OptStm(reb)) | |
1117 | | (Ast0.UniqueStm(rea),Ast0.UniqueStm(reb)) -> | |
1118 | match_statement rea reb | |
1119 | | (_,Ast0.OptStm(reb)) | |
1120 | | (_,Ast0.UniqueStm(reb)) -> match_statement pattern reb | |
1121 | | _ -> return false | |
1122 | else return_false (ContextRequired (Ast0.StmtTag s)) | |
faf9a90c | 1123 | |
34e49164 C |
1124 | (* first should provide a subset of the information in the second *) |
1125 | and match_fninfo patterninfo cinfo = | |
1126 | let patterninfo = List.sort compare patterninfo in | |
1127 | let cinfo = List.sort compare cinfo in | |
1128 | let rec loop = function | |
1129 | (Ast0.FStorage(sta)::resta,Ast0.FStorage(stb)::restb) -> | |
1130 | if mcode_equal sta stb | |
1131 | then conjunct_bindings (check_mcode sta stb) (loop (resta,restb)) | |
1132 | else return false | |
1133 | | (Ast0.FType(tya)::resta,Ast0.FType(tyb)::restb) -> | |
1134 | conjunct_bindings (match_typeC tya tyb) (loop (resta,restb)) | |
1135 | | (Ast0.FInline(ia)::resta,Ast0.FInline(ib)::restb) -> | |
1136 | if mcode_equal ia ib | |
1137 | then conjunct_bindings (check_mcode ia ib) (loop (resta,restb)) | |
1138 | else return false | |
1139 | | (Ast0.FAttr(ia)::resta,Ast0.FAttr(ib)::restb) -> | |
1140 | if mcode_equal ia ib | |
1141 | then conjunct_bindings (check_mcode ia ib) (loop (resta,restb)) | |
1142 | else return false | |
1143 | | (x::resta,((y::_) as restb)) -> | |
1144 | (match compare x y with | |
1145 | -1 -> return false | |
1146 | | 1 -> loop (resta,restb) | |
1147 | | _ -> failwith "not possible") | |
1148 | | _ -> return false in | |
1149 | loop (patterninfo,cinfo) | |
faf9a90c | 1150 | |
34e49164 C |
1151 | and match_case_line pattern c = |
1152 | if not(checks_needed) or not(context_required) or is_context c | |
1153 | then | |
1154 | match (Ast0.unwrap pattern,Ast0.unwrap c) with | |
1155 | (Ast0.Default(d1,c1,codea),Ast0.Default(d,c,codeb)) -> | |
1156 | conjunct_many_bindings | |
1157 | [check_mcode d1 d; check_mcode c1 c; | |
1158 | match_dots match_statement is_slist_matcher do_slist_match | |
1159 | codea codeb] | |
1160 | | (Ast0.Case(ca1,expa,c1,codea),Ast0.Case(ca,expb,c,codeb)) -> | |
1161 | conjunct_many_bindings | |
1162 | [check_mcode ca1 ca; check_mcode c1 c; match_expr expa expb; | |
1163 | match_dots match_statement is_slist_matcher do_slist_match | |
1164 | codea codeb] | |
1165 | | (Ast0.OptCase(ca),Ast0.OptCase(cb)) -> match_case_line ca cb | |
1166 | | (_,Ast0.OptCase(cb)) -> match_case_line pattern cb | |
1167 | | _ -> return false | |
1168 | else return_false (ContextRequired (Ast0.CaseLineTag c)) in | |
faf9a90c | 1169 | |
34e49164 C |
1170 | let match_statement_dots x y = |
1171 | match_dots match_statement is_slist_matcher do_slist_match x y in | |
faf9a90c | 1172 | |
34e49164 C |
1173 | (match_expr, match_decl, match_statement, match_typeC, |
1174 | match_statement_dots) | |
faf9a90c | 1175 | |
34e49164 C |
1176 | let match_expr dochecks context_required whencode_allowed = |
1177 | let (fn,_,_,_,_) = match_maker dochecks context_required whencode_allowed in | |
1178 | fn | |
faf9a90c | 1179 | |
34e49164 C |
1180 | let match_decl dochecks context_required whencode_allowed = |
1181 | let (_,fn,_,_,_) = match_maker dochecks context_required whencode_allowed in | |
1182 | fn | |
faf9a90c | 1183 | |
34e49164 C |
1184 | let match_statement dochecks context_required whencode_allowed = |
1185 | let (_,_,fn,_,_) = match_maker dochecks context_required whencode_allowed in | |
1186 | fn | |
faf9a90c | 1187 | |
34e49164 C |
1188 | let match_typeC dochecks context_required whencode_allowed = |
1189 | let (_,_,_,fn,_) = match_maker dochecks context_required whencode_allowed in | |
1190 | fn | |
faf9a90c | 1191 | |
34e49164 C |
1192 | let match_statement_dots dochecks context_required whencode_allowed = |
1193 | let (_,_,_,_,fn) = match_maker dochecks context_required whencode_allowed in | |
1194 | fn | |
faf9a90c | 1195 | |
34e49164 C |
1196 | (* --------------------------------------------------------------------- *) |
1197 | (* make an entire tree MINUS *) | |
faf9a90c | 1198 | |
34e49164 | 1199 | let make_minus = |
708f4980 | 1200 | let mcode (term,arity,info,mcodekind,pos,adj) = |
34e49164 C |
1201 | let new_mcodekind = |
1202 | match mcodekind with | |
1203 | Ast0.CONTEXT(mc) -> | |
1204 | (match !mc with | |
1205 | (Ast.NOTHING,_,_) -> Ast0.MINUS(ref([],Ast0.default_token_info)) | |
1206 | | _ -> failwith "make_minus: unexpected befaft") | |
1207 | | Ast0.MINUS(mc) -> mcodekind (* in the part copied from the src term *) | |
1208 | | _ -> failwith "make_minus mcode: unexpected mcodekind" in | |
708f4980 | 1209 | (term,arity,info,new_mcodekind,pos,adj) in |
faf9a90c | 1210 | |
34e49164 C |
1211 | let update_mc mcodekind e = |
1212 | match !mcodekind with | |
1213 | Ast0.CONTEXT(mc) -> | |
1214 | (match !mc with | |
1215 | (Ast.NOTHING,_,_) -> | |
1216 | mcodekind := Ast0.MINUS(ref([],Ast0.default_token_info)) | |
1217 | | _ -> failwith "make_minus: unexpected befaft") | |
1218 | | Ast0.MINUS(_mc) -> () (* in the part copied from the src term *) | |
1219 | | Ast0.PLUS -> failwith "make_minus donothing: unexpected plus mcodekind" | |
1220 | | _ -> failwith "make_minus donothing: unexpected mcodekind" in | |
faf9a90c | 1221 | |
34e49164 C |
1222 | let donothing r k e = |
1223 | let mcodekind = Ast0.get_mcodekind_ref e in | |
1224 | let e = k e in update_mc mcodekind e; e in | |
faf9a90c | 1225 | |
34e49164 C |
1226 | (* special case for whencode, because it isn't processed by contextneg, |
1227 | since it doesn't appear in the + code *) | |
1228 | (* cases for dots and nests *) | |
1229 | let expression r k e = | |
1230 | let mcodekind = Ast0.get_mcodekind_ref e in | |
1231 | match Ast0.unwrap e with | |
1232 | Ast0.Edots(d,whencode) -> | |
1233 | (*don't recurse because whencode hasn't been processed by context_neg*) | |
1234 | update_mc mcodekind e; Ast0.rewrap e (Ast0.Edots(mcode d,whencode)) | |
1235 | | Ast0.Ecircles(d,whencode) -> | |
1236 | (*don't recurse because whencode hasn't been processed by context_neg*) | |
1237 | update_mc mcodekind e; Ast0.rewrap e (Ast0.Ecircles(mcode d,whencode)) | |
1238 | | Ast0.Estars(d,whencode) -> | |
1239 | (*don't recurse because whencode hasn't been processed by context_neg*) | |
1240 | update_mc mcodekind e; Ast0.rewrap e (Ast0.Estars(mcode d,whencode)) | |
1241 | | Ast0.NestExpr(starter,expr_dots,ender,whencode,multi) -> | |
1242 | update_mc mcodekind e; | |
1243 | Ast0.rewrap e | |
1244 | (Ast0.NestExpr(mcode starter, | |
b1b2de81 | 1245 | r.VT0.rebuilder_rec_expression_dots expr_dots, |
34e49164 C |
1246 | mcode ender,whencode,multi)) |
1247 | | _ -> donothing r k e in | |
faf9a90c | 1248 | |
34e49164 C |
1249 | let declaration r k e = |
1250 | let mcodekind = Ast0.get_mcodekind_ref e in | |
1251 | match Ast0.unwrap e with | |
1252 | Ast0.Ddots(d,whencode) -> | |
1253 | (*don't recurse because whencode hasn't been processed by context_neg*) | |
1254 | update_mc mcodekind e; Ast0.rewrap e (Ast0.Ddots(mcode d,whencode)) | |
1255 | | _ -> donothing r k e in | |
faf9a90c | 1256 | |
34e49164 C |
1257 | let statement r k e = |
1258 | let mcodekind = Ast0.get_mcodekind_ref e in | |
1259 | match Ast0.unwrap e with | |
1260 | Ast0.Dots(d,whencode) -> | |
1261 | (*don't recurse because whencode hasn't been processed by context_neg*) | |
1262 | update_mc mcodekind e; Ast0.rewrap e (Ast0.Dots(mcode d,whencode)) | |
1263 | | Ast0.Circles(d,whencode) -> | |
1264 | update_mc mcodekind e; Ast0.rewrap e (Ast0.Circles(mcode d,whencode)) | |
1265 | | Ast0.Stars(d,whencode) -> | |
1266 | update_mc mcodekind e; Ast0.rewrap e (Ast0.Stars(mcode d,whencode)) | |
1267 | | Ast0.Nest(starter,stmt_dots,ender,whencode,multi) -> | |
1268 | update_mc mcodekind e; | |
1269 | Ast0.rewrap e | |
b1b2de81 C |
1270 | (Ast0.Nest |
1271 | (mcode starter,r.VT0.rebuilder_rec_statement_dots stmt_dots, | |
1272 | mcode ender,whencode,multi)) | |
34e49164 | 1273 | | _ -> donothing r k e in |
faf9a90c | 1274 | |
34e49164 C |
1275 | let initialiser r k e = |
1276 | let mcodekind = Ast0.get_mcodekind_ref e in | |
1277 | match Ast0.unwrap e with | |
1278 | Ast0.Idots(d,whencode) -> | |
1279 | (*don't recurse because whencode hasn't been processed by context_neg*) | |
1280 | update_mc mcodekind e; Ast0.rewrap e (Ast0.Idots(mcode d,whencode)) | |
1281 | | _ -> donothing r k e in | |
faf9a90c | 1282 | |
34e49164 C |
1283 | let dots r k e = |
1284 | let info = Ast0.get_info e in | |
1285 | let mcodekind = Ast0.get_mcodekind_ref e in | |
1286 | match Ast0.unwrap e with | |
1287 | Ast0.DOTS([]) -> | |
1288 | (* if context is - this should be - as well. There are no tokens | |
1289 | here though, so the bottom-up minusifier in context_neg leaves it | |
485bce71 C |
1290 | as mixed (or context for sgrep2). It would be better to fix |
1291 | context_neg, but that would | |
34e49164 C |
1292 | require a special case for each term with a dots subterm. *) |
1293 | (match !mcodekind with | |
485bce71 | 1294 | Ast0.MIXED(mc) | Ast0.CONTEXT(mc) -> |
34e49164 C |
1295 | (match !mc with |
1296 | (Ast.NOTHING,_,_) -> | |
1297 | mcodekind := Ast0.MINUS(ref([],Ast0.default_token_info)); | |
1298 | e | |
1299 | | _ -> failwith "make_minus: unexpected befaft") | |
1300 | (* code already processed by an enclosing iso *) | |
1301 | | Ast0.MINUS(mc) -> e | |
1302 | | _ -> | |
1303 | failwith | |
1304 | (Printf.sprintf | |
485bce71 | 1305 | "%d: make_minus donothingxxx: unexpected mcodekind: %s" |
0708f913 | 1306 | info.Ast0.pos_info.Ast0.line_start (Dumper.dump e))) |
34e49164 | 1307 | | _ -> donothing r k e in |
faf9a90c | 1308 | |
b1b2de81 | 1309 | V0.flat_rebuilder |
34e49164 | 1310 | mcode mcode mcode mcode mcode mcode mcode mcode mcode mcode mcode mcode |
34e49164 C |
1311 | dots dots dots dots dots dots |
1312 | donothing expression donothing initialiser donothing declaration | |
1313 | statement donothing donothing | |
faf9a90c | 1314 | |
34e49164 C |
1315 | (* --------------------------------------------------------------------- *) |
1316 | (* rebuild mcode cells in an instantiated alt *) | |
faf9a90c | 1317 | |
34e49164 C |
1318 | (* mcodes will be side effected later with plus code, so we have to copy |
1319 | them on instantiating an isomorphism. One could wonder whether it would | |
1320 | be better not to use side-effects, but they are convenient for insert_plus | |
1321 | where is it useful to manipulate a list of the mcodes but side-effect a | |
1322 | tree *) | |
1323 | (* hmm... Insert_plus is called before Iso_pattern... *) | |
1324 | let rebuild_mcode start_line = | |
1325 | let copy_mcodekind = function | |
1326 | Ast0.CONTEXT(mc) -> Ast0.CONTEXT(ref (!mc)) | |
1327 | | Ast0.MINUS(mc) -> Ast0.MINUS(ref (!mc)) | |
1328 | | Ast0.MIXED(mc) -> Ast0.MIXED(ref (!mc)) | |
1329 | | Ast0.PLUS -> | |
1330 | (* this function is used elsewhere where we need to rebuild the | |
1331 | indices, and so we allow PLUS code as well *) | |
1332 | Ast0.PLUS in | |
faf9a90c | 1333 | |
708f4980 | 1334 | let mcode (term,arity,info,mcodekind,pos,adj) = |
34e49164 C |
1335 | let info = |
1336 | match start_line with | |
0708f913 C |
1337 | Some x -> |
1338 | let new_pos_info = | |
1339 | {info.Ast0.pos_info with | |
1340 | Ast0.line_start = x; | |
1341 | Ast0.line_end = x; } in | |
1342 | {info with Ast0.pos_info = new_pos_info} | |
34e49164 | 1343 | | None -> info in |
708f4980 | 1344 | (term,arity,info,copy_mcodekind mcodekind,pos,adj) in |
faf9a90c | 1345 | |
34e49164 C |
1346 | let copy_one x = |
1347 | let old_info = Ast0.get_info x in | |
1348 | let info = | |
1349 | match start_line with | |
0708f913 C |
1350 | Some x -> |
1351 | let new_pos_info = | |
1352 | {old_info.Ast0.pos_info with | |
1353 | Ast0.line_start = x; | |
1354 | Ast0.line_end = x; } in | |
1355 | {old_info with Ast0.pos_info = new_pos_info} | |
34e49164 C |
1356 | | None -> old_info in |
1357 | {x with Ast0.info = info; Ast0.index = ref(Ast0.get_index x); | |
1358 | Ast0.mcodekind = ref (copy_mcodekind (Ast0.get_mcodekind x))} in | |
faf9a90c | 1359 | |
34e49164 | 1360 | let donothing r k e = copy_one (k e) in |
faf9a90c | 1361 | |
34e49164 C |
1362 | (* case for control operators (if, etc) *) |
1363 | let statement r k e = | |
1364 | let s = k e in | |
1365 | let res = | |
1366 | copy_one | |
1367 | (Ast0.rewrap s | |
1368 | (match Ast0.unwrap s with | |
1369 | Ast0.Decl((info,mc),decl) -> | |
1370 | Ast0.Decl((info,copy_mcodekind mc),decl) | |
1371 | | Ast0.IfThen(iff,lp,tst,rp,branch,(info,mc)) -> | |
1372 | Ast0.IfThen(iff,lp,tst,rp,branch,(info,copy_mcodekind mc)) | |
1373 | | Ast0.IfThenElse(iff,lp,tst,rp,branch1,els,branch2,(info,mc)) -> | |
1374 | Ast0.IfThenElse(iff,lp,tst,rp,branch1,els,branch2, | |
1375 | (info,copy_mcodekind mc)) | |
1376 | | Ast0.While(whl,lp,exp,rp,body,(info,mc)) -> | |
1377 | Ast0.While(whl,lp,exp,rp,body,(info,copy_mcodekind mc)) | |
1378 | | Ast0.For(fr,lp,e1,sem1,e2,sem2,e3,rp,body,(info,mc)) -> | |
1379 | Ast0.For(fr,lp,e1,sem1,e2,sem2,e3,rp,body, | |
1380 | (info,copy_mcodekind mc)) | |
1381 | | Ast0.Iterator(nm,lp,args,rp,body,(info,mc)) -> | |
1382 | Ast0.Iterator(nm,lp,args,rp,body,(info,copy_mcodekind mc)) | |
1383 | | Ast0.FunDecl | |
1384 | ((info,mc),fninfo,name,lp,params,rp,lbrace,body,rbrace) -> | |
1385 | Ast0.FunDecl | |
1386 | ((info,copy_mcodekind mc), | |
1387 | fninfo,name,lp,params,rp,lbrace,body,rbrace) | |
1388 | | s -> s)) in | |
1389 | Ast0.set_dots_bef_aft res | |
1390 | (match Ast0.get_dots_bef_aft res with | |
1391 | Ast0.NoDots -> Ast0.NoDots | |
1392 | | Ast0.AddingBetweenDots s -> | |
b1b2de81 | 1393 | Ast0.AddingBetweenDots(r.VT0.rebuilder_rec_statement s) |
34e49164 | 1394 | | Ast0.DroppingBetweenDots s -> |
b1b2de81 | 1395 | Ast0.DroppingBetweenDots(r.VT0.rebuilder_rec_statement s)) in |
faf9a90c | 1396 | |
b1b2de81 | 1397 | V0.flat_rebuilder |
34e49164 | 1398 | mcode mcode mcode mcode mcode mcode mcode mcode mcode mcode mcode mcode |
34e49164 C |
1399 | donothing donothing donothing donothing donothing donothing |
1400 | donothing donothing donothing donothing donothing | |
1401 | donothing statement donothing donothing | |
faf9a90c | 1402 | |
34e49164 C |
1403 | (* --------------------------------------------------------------------- *) |
1404 | (* The problem of whencode. If an isomorphism contains dots in multiple | |
1405 | rules, then the code that is matched cannot contain whencode, because we | |
1406 | won't know which dots it goes with. Should worry about nests, but they | |
1407 | aren't allowed in isomorphisms for the moment. *) | |
faf9a90c | 1408 | |
34e49164 | 1409 | let count_edots = |
34e49164 C |
1410 | let option_default = 0 in |
1411 | let bind x y = x + y in | |
34e49164 C |
1412 | let exprfn r k e = |
1413 | match Ast0.unwrap e with | |
1414 | Ast0.Edots(_,_) | Ast0.Ecircles(_,_) | Ast0.Estars(_,_) -> 1 | |
1415 | | _ -> 0 in | |
faf9a90c | 1416 | |
34e49164 | 1417 | V0.combiner bind option_default |
b1b2de81 | 1418 | {V0.combiner_functions with VT0.combiner_exprfn = exprfn} |
faf9a90c | 1419 | |
34e49164 | 1420 | let count_idots = |
34e49164 C |
1421 | let option_default = 0 in |
1422 | let bind x y = x + y in | |
34e49164 C |
1423 | let initfn r k e = |
1424 | match Ast0.unwrap e with Ast0.Idots(_,_) -> 1 | _ -> 0 in | |
faf9a90c | 1425 | |
34e49164 | 1426 | V0.combiner bind option_default |
b1b2de81 | 1427 | {V0.combiner_functions with VT0.combiner_initfn = initfn} |
faf9a90c | 1428 | |
34e49164 | 1429 | let count_dots = |
34e49164 C |
1430 | let option_default = 0 in |
1431 | let bind x y = x + y in | |
34e49164 C |
1432 | let stmtfn r k e = |
1433 | match Ast0.unwrap e with | |
1434 | Ast0.Dots(_,_) | Ast0.Circles(_,_) | Ast0.Stars(_,_) -> 1 | |
1435 | | _ -> 0 in | |
faf9a90c | 1436 | |
34e49164 | 1437 | V0.combiner bind option_default |
b1b2de81 | 1438 | {V0.combiner_functions with VT0.combiner_stmtfn = stmtfn} |
faf9a90c | 1439 | |
34e49164 | 1440 | (* --------------------------------------------------------------------- *) |
faf9a90c | 1441 | |
34e49164 C |
1442 | let lookup name bindings mv_bindings = |
1443 | try Common.Left (List.assoc (term name) bindings) | |
1444 | with | |
1445 | Not_found -> | |
1446 | (* failure is not possible anymore *) | |
1447 | Common.Right (List.assoc (term name) mv_bindings) | |
1448 | ||
1449 | (* mv_bindings is for the fresh metavariables that are introduced by the | |
1450 | isomorphism *) | |
1451 | let instantiate bindings mv_bindings = | |
1452 | let mcode x = | |
1453 | match Ast0.get_pos x with | |
1454 | Ast0.MetaPos(name,_,_) -> | |
1455 | (try | |
1456 | match lookup name bindings mv_bindings with | |
1457 | Common.Left(Ast0.MetaPosTag(id)) -> Ast0.set_pos id x | |
1458 | | _ -> failwith "not possible" | |
1459 | with Not_found -> Ast0.set_pos Ast0.NoMetaPos x) | |
1460 | | _ -> x in | |
1461 | let donothing r k e = k e in | |
1462 | ||
1463 | (* cases where metavariables can occur *) | |
1464 | let identfn r k e = | |
1465 | let e = k e in | |
1466 | match Ast0.unwrap e with | |
1467 | Ast0.MetaId(name,constraints,pure) -> | |
b1b2de81 | 1468 | (rebuild_mcode None).VT0.rebuilder_rec_ident |
34e49164 C |
1469 | (match lookup name bindings mv_bindings with |
1470 | Common.Left(Ast0.IdentTag(id)) -> id | |
1471 | | Common.Left(_) -> failwith "not possible 1" | |
1472 | | Common.Right(new_mv) -> | |
1473 | Ast0.rewrap e | |
1474 | (Ast0.MetaId | |
1475 | (Ast0.set_mcode_data new_mv name,constraints,pure))) | |
1476 | | Ast0.MetaFunc(name,_,pure) -> failwith "metafunc not supported" | |
1477 | | Ast0.MetaLocalFunc(name,_,pure) -> failwith "metalocalfunc not supported" | |
1478 | | _ -> e in | |
1479 | ||
1480 | (* case for list metavariables *) | |
1481 | let rec elist r same_dots = function | |
1482 | [] -> [] | |
1483 | | [x] -> | |
1484 | (match Ast0.unwrap x with | |
1485 | Ast0.MetaExprList(name,lenname,pure) -> | |
1486 | failwith "meta_expr_list in iso not supported" | |
1487 | (*match lookup name bindings mv_bindings with | |
1488 | Common.Left(Ast0.DotsExprTag(exp)) -> | |
1489 | (match same_dots exp with | |
1490 | Some l -> l | |
1491 | | None -> failwith "dots put in incompatible context") | |
1492 | | Common.Left(Ast0.ExprTag(exp)) -> [exp] | |
1493 | | Common.Left(_) -> failwith "not possible 1" | |
1494 | | Common.Right(new_mv) -> | |
1495 | failwith "MetaExprList in SP not supported"*) | |
b1b2de81 C |
1496 | | _ -> [r.VT0.rebuilder_rec_expression x]) |
1497 | | x::xs -> (r.VT0.rebuilder_rec_expression x)::(elist r same_dots xs) in | |
34e49164 C |
1498 | |
1499 | let rec plist r same_dots = function | |
1500 | [] -> [] | |
1501 | | [x] -> | |
1502 | (match Ast0.unwrap x with | |
1503 | Ast0.MetaParamList(name,lenname,pure) -> | |
1504 | failwith "meta_param_list in iso not supported" | |
1505 | (*match lookup name bindings mv_bindings with | |
1506 | Common.Left(Ast0.DotsParamTag(param)) -> | |
1507 | (match same_dots param with | |
1508 | Some l -> l | |
1509 | | None -> failwith "dots put in incompatible context") | |
1510 | | Common.Left(Ast0.ParamTag(param)) -> [param] | |
1511 | | Common.Left(_) -> failwith "not possible 1" | |
1512 | | Common.Right(new_mv) -> | |
1513 | failwith "MetaExprList in SP not supported"*) | |
b1b2de81 C |
1514 | | _ -> [r.VT0.rebuilder_rec_parameter x]) |
1515 | | x::xs -> (r.VT0.rebuilder_rec_parameter x)::(plist r same_dots xs) in | |
34e49164 C |
1516 | |
1517 | let rec slist r same_dots = function | |
1518 | [] -> [] | |
1519 | | [x] -> | |
1520 | (match Ast0.unwrap x with | |
1521 | Ast0.MetaStmtList(name,pure) -> | |
1522 | (match lookup name bindings mv_bindings with | |
1523 | Common.Left(Ast0.DotsStmtTag(stm)) -> | |
1524 | (match same_dots stm with | |
1525 | Some l -> l | |
1526 | | None -> failwith "dots put in incompatible context") | |
1527 | | Common.Left(Ast0.StmtTag(stm)) -> [stm] | |
1528 | | Common.Left(_) -> failwith "not possible 1" | |
1529 | | Common.Right(new_mv) -> | |
1530 | failwith "MetaExprList in SP not supported") | |
b1b2de81 C |
1531 | | _ -> [r.VT0.rebuilder_rec_statement x]) |
1532 | | x::xs -> (r.VT0.rebuilder_rec_statement x)::(slist r same_dots xs) in | |
34e49164 C |
1533 | |
1534 | let same_dots d = | |
1535 | match Ast0.unwrap d with Ast0.DOTS(l) -> Some l |_ -> None in | |
1536 | let same_circles d = | |
1537 | match Ast0.unwrap d with Ast0.CIRCLES(l) -> Some l |_ -> None in | |
1538 | let same_stars d = | |
1539 | match Ast0.unwrap d with Ast0.STARS(l) -> Some l |_ -> None in | |
1540 | ||
1541 | let dots list_fn r k d = | |
1542 | Ast0.rewrap d | |
1543 | (match Ast0.unwrap d with | |
1544 | Ast0.DOTS(l) -> Ast0.DOTS(list_fn r same_dots l) | |
1545 | | Ast0.CIRCLES(l) -> Ast0.CIRCLES(list_fn r same_circles l) | |
1546 | | Ast0.STARS(l) -> Ast0.STARS(list_fn r same_stars l)) in | |
1547 | ||
1548 | let exprfn r k old_e = (* need to keep the original code for ! optim *) | |
1549 | let e = k old_e in | |
1550 | let e1 = | |
1551 | match Ast0.unwrap e with | |
1552 | Ast0.MetaExpr(name,constraints,x,form,pure) -> | |
b1b2de81 | 1553 | (rebuild_mcode None).VT0.rebuilder_rec_expression |
34e49164 C |
1554 | (match lookup name bindings mv_bindings with |
1555 | Common.Left(Ast0.ExprTag(exp)) -> exp | |
1556 | | Common.Left(_) -> failwith "not possible 1" | |
1557 | | Common.Right(new_mv) -> | |
1558 | let new_types = | |
1559 | match x with | |
1560 | None -> None | |
1561 | | Some types -> | |
1562 | let rec renamer = function | |
1563 | Type_cocci.MetaType(name,keep,inherited) -> | |
1564 | (match | |
708f4980 | 1565 | lookup (name,(),(),(),None,-1) bindings mv_bindings |
34e49164 C |
1566 | with |
1567 | Common.Left(Ast0.TypeCTag(t)) -> | |
1568 | Ast0.ast0_type_to_type t | |
1569 | | Common.Left(_) -> | |
1570 | failwith "iso pattern: unexpected type" | |
1571 | | Common.Right(new_mv) -> | |
1572 | Type_cocci.MetaType(new_mv,keep,inherited)) | |
1573 | | Type_cocci.ConstVol(cv,ty) -> | |
1574 | Type_cocci.ConstVol(cv,renamer ty) | |
1575 | | Type_cocci.Pointer(ty) -> | |
1576 | Type_cocci.Pointer(renamer ty) | |
1577 | | Type_cocci.FunctionPointer(ty) -> | |
1578 | Type_cocci.FunctionPointer(renamer ty) | |
1579 | | Type_cocci.Array(ty) -> | |
1580 | Type_cocci.Array(renamer ty) | |
1581 | | t -> t in | |
1582 | Some(List.map renamer types) in | |
1583 | Ast0.rewrap e | |
1584 | (Ast0.MetaExpr | |
1585 | (Ast0.set_mcode_data new_mv name,constraints, | |
1586 | new_types,form,pure))) | |
1587 | | Ast0.MetaErr(namea,_,pure) -> failwith "metaerr not supported" | |
1588 | | Ast0.MetaExprList(namea,lenname,pure) -> | |
1589 | failwith "metaexprlist not supported" | |
1590 | | Ast0.Unary(exp,unop) -> | |
1591 | (match Ast0.unwrap_mcode unop with | |
1592 | Ast.Not -> | |
1593 | let was_meta = | |
1594 | (* k e doesn't change the outer structure of the term, | |
1595 | only the metavars *) | |
1596 | match Ast0.unwrap old_e with | |
1597 | Ast0.Unary(exp,_) -> | |
1598 | (match Ast0.unwrap exp with | |
1599 | Ast0.MetaExpr(name,constraints,x,form,pure) -> true | |
1600 | | _ -> false) | |
1601 | | _ -> failwith "not possible" in | |
1602 | let nomodif e = | |
1603 | let mc = Ast0.get_mcodekind exp in | |
1604 | match mc with | |
1605 | Ast0.MINUS(x) -> | |
1606 | (match !x with | |
1607 | ([],_) -> true | |
1608 | | _ -> false) | |
1609 | | Ast0.CONTEXT(x) | Ast0.MIXED(x) -> | |
1610 | (match !x with | |
1611 | (Ast.NOTHING,_,_) -> true | |
1612 | | _ -> false) | |
1613 | | _ -> failwith "plus not possible" in | |
1614 | if was_meta && nomodif exp && nomodif e | |
1615 | then | |
91eba41f C |
1616 | let idcont x = x in |
1617 | let rec negate e (*for rewrapping*) res (*code to process*) k = | |
1618 | (* k accumulates parens, to keep negation outside if no | |
1619 | propagation is possible *) | |
34e49164 C |
1620 | match Ast0.unwrap res with |
1621 | Ast0.Unary(e1,op) when Ast0.unwrap_mcode op = Ast.Not -> | |
91eba41f C |
1622 | k (Ast0.rewrap e (Ast0.unwrap e1)) |
1623 | | Ast0.Edots(_,_) -> k (Ast0.rewrap e (Ast0.unwrap res)) | |
34e49164 | 1624 | | Ast0.Paren(lp,e,rp) -> |
91eba41f C |
1625 | negate e e |
1626 | (function x -> | |
1627 | k (Ast0.rewrap res (Ast0.Paren(lp,x,rp)))) | |
34e49164 C |
1628 | | Ast0.Binary(e1,op,e2) -> |
1629 | let reb nop = Ast0.rewrap_mcode op (Ast.Logical(nop)) in | |
91eba41f C |
1630 | let k1 x = k (Ast0.rewrap e x) in |
1631 | (match Ast0.unwrap_mcode op with | |
1632 | Ast.Logical(Ast.Inf) -> | |
1633 | k1 (Ast0.Binary(e1,reb Ast.SupEq,e2)) | |
1634 | | Ast.Logical(Ast.Sup) -> | |
1635 | k1 (Ast0.Binary(e1,reb Ast.InfEq,e2)) | |
1636 | | Ast.Logical(Ast.InfEq) -> | |
1637 | k1 (Ast0.Binary(e1,reb Ast.Sup,e2)) | |
1638 | | Ast.Logical(Ast.SupEq) -> | |
1639 | k1 (Ast0.Binary(e1,reb Ast.Inf,e2)) | |
1640 | | Ast.Logical(Ast.Eq) -> | |
1641 | k1 (Ast0.Binary(e1,reb Ast.NotEq,e2)) | |
1642 | | Ast.Logical(Ast.NotEq) -> | |
1643 | k1 (Ast0.Binary(e1,reb Ast.Eq,e2)) | |
1644 | | Ast.Logical(Ast.AndLog) -> | |
1645 | k1 (Ast0.Binary(negate e1 e1 idcont,reb Ast.OrLog, | |
1646 | negate e2 e2 idcont)) | |
1647 | | Ast.Logical(Ast.OrLog) -> | |
1648 | k1 (Ast0.Binary(negate e1 e1 idcont,reb Ast.AndLog, | |
1649 | negate e2 e2 idcont)) | |
1650 | | _ -> | |
1651 | Ast0.rewrap e | |
1652 | (Ast0.Unary(k res,Ast0.rewrap_mcode op Ast.Not))) | |
34e49164 C |
1653 | | Ast0.DisjExpr(lp,exps,mids,rp) -> |
1654 | (* use res because it is the transformed argument *) | |
91eba41f | 1655 | let exps = List.map (function e -> negate e e k) exps in |
34e49164 C |
1656 | Ast0.rewrap res (Ast0.DisjExpr(lp,exps,mids,rp)) |
1657 | | _ -> | |
1658 | (*use e, because this might be the toplevel expression*) | |
1659 | Ast0.rewrap e | |
91eba41f C |
1660 | (Ast0.Unary(k res,Ast0.rewrap_mcode unop Ast.Not)) in |
1661 | negate e exp idcont | |
34e49164 C |
1662 | else e |
1663 | | _ -> e) | |
1664 | | Ast0.Edots(d,_) -> | |
1665 | (try | |
1666 | (match List.assoc (dot_term d) bindings with | |
1667 | Ast0.ExprTag(exp) -> Ast0.rewrap e (Ast0.Edots(d,Some exp)) | |
1668 | | _ -> failwith "unexpected binding") | |
1669 | with Not_found -> e) | |
1670 | | Ast0.Ecircles(d,_) -> | |
1671 | (try | |
1672 | (match List.assoc (dot_term d) bindings with | |
1673 | Ast0.ExprTag(exp) -> Ast0.rewrap e (Ast0.Ecircles(d,Some exp)) | |
1674 | | _ -> failwith "unexpected binding") | |
1675 | with Not_found -> e) | |
1676 | | Ast0.Estars(d,_) -> | |
1677 | (try | |
1678 | (match List.assoc (dot_term d) bindings with | |
1679 | Ast0.ExprTag(exp) -> Ast0.rewrap e (Ast0.Estars(d,Some exp)) | |
1680 | | _ -> failwith "unexpected binding") | |
1681 | with Not_found -> e) | |
1682 | | _ -> e in | |
1683 | if Ast0.get_test_exp old_e then Ast0.set_test_exp e1 else e1 in | |
1684 | ||
1685 | let tyfn r k e = | |
1686 | let e = k e in | |
1687 | match Ast0.unwrap e with | |
1688 | Ast0.MetaType(name,pure) -> | |
b1b2de81 | 1689 | (rebuild_mcode None).VT0.rebuilder_rec_typeC |
34e49164 C |
1690 | (match lookup name bindings mv_bindings with |
1691 | Common.Left(Ast0.TypeCTag(ty)) -> ty | |
1692 | | Common.Left(_) -> failwith "not possible 1" | |
1693 | | Common.Right(new_mv) -> | |
1694 | Ast0.rewrap e | |
1695 | (Ast0.MetaType(Ast0.set_mcode_data new_mv name,pure))) | |
1696 | | _ -> e in | |
1697 | ||
113803cf C |
1698 | let initfn r k e = |
1699 | let e = k e in | |
1700 | match Ast0.unwrap e with | |
1701 | Ast0.MetaInit(name,pure) -> | |
b1b2de81 | 1702 | (rebuild_mcode None).VT0.rebuilder_rec_initialiser |
113803cf C |
1703 | (match lookup name bindings mv_bindings with |
1704 | Common.Left(Ast0.InitTag(ty)) -> ty | |
1705 | | Common.Left(_) -> failwith "not possible 1" | |
1706 | | Common.Right(new_mv) -> | |
1707 | Ast0.rewrap e | |
1708 | (Ast0.MetaInit(Ast0.set_mcode_data new_mv name,pure))) | |
1709 | | _ -> e in | |
1710 | ||
34e49164 C |
1711 | let declfn r k e = |
1712 | let e = k e in | |
1713 | match Ast0.unwrap e with | |
1714 | Ast0.Ddots(d,_) -> | |
1715 | (try | |
1716 | (match List.assoc (dot_term d) bindings with | |
1717 | Ast0.DeclTag(exp) -> Ast0.rewrap e (Ast0.Ddots(d,Some exp)) | |
1718 | | _ -> failwith "unexpected binding") | |
1719 | with Not_found -> e) | |
1720 | | _ -> e in | |
1721 | ||
1722 | let paramfn r k e = | |
1723 | let e = k e in | |
1724 | match Ast0.unwrap e with | |
1725 | Ast0.MetaParam(name,pure) -> | |
b1b2de81 | 1726 | (rebuild_mcode None).VT0.rebuilder_rec_parameter |
34e49164 C |
1727 | (match lookup name bindings mv_bindings with |
1728 | Common.Left(Ast0.ParamTag(param)) -> param | |
1729 | | Common.Left(_) -> failwith "not possible 1" | |
1730 | | Common.Right(new_mv) -> | |
1731 | Ast0.rewrap e | |
1732 | (Ast0.MetaParam(Ast0.set_mcode_data new_mv name, pure))) | |
1733 | | Ast0.MetaParamList(name,lenname,pure) -> | |
1734 | failwith "metaparamlist not supported" | |
1735 | | _ -> e in | |
1736 | ||
1be43e12 C |
1737 | let whenfn (_,v) = |
1738 | match v with | |
1739 | Ast0.DotsStmtTag(stms) -> Ast0.WhenNot stms | |
1740 | | Ast0.StmtTag(stm) -> Ast0.WhenAlways stm | |
1741 | | Ast0.IsoWhenTTag(stm) -> Ast0.WhenNotTrue stm | |
1742 | | Ast0.IsoWhenFTag(stm) -> Ast0.WhenNotFalse stm | |
1743 | | Ast0.IsoWhenTag(x) -> Ast0.WhenModifier(x) | |
1744 | | _ -> failwith "unexpected binding" in | |
1745 | ||
34e49164 C |
1746 | let stmtfn r k e = |
1747 | let e = k e in | |
1748 | match Ast0.unwrap e with | |
1749 | Ast0.MetaStmt(name,pure) -> | |
b1b2de81 | 1750 | (rebuild_mcode None).VT0.rebuilder_rec_statement |
34e49164 C |
1751 | (match lookup name bindings mv_bindings with |
1752 | Common.Left(Ast0.StmtTag(stm)) -> stm | |
1753 | | Common.Left(_) -> failwith "not possible 1" | |
1754 | | Common.Right(new_mv) -> | |
1755 | Ast0.rewrap e | |
1756 | (Ast0.MetaStmt(Ast0.set_mcode_data new_mv name,pure))) | |
1757 | | Ast0.MetaStmtList(name,pure) -> failwith "metastmtlist not supported" | |
1758 | | Ast0.Dots(d,_) -> | |
1759 | Ast0.rewrap e | |
1760 | (Ast0.Dots | |
1761 | (d, | |
1be43e12 | 1762 | List.map whenfn |
34e49164 C |
1763 | (List.filter (function (x,v) -> x = (dot_term d)) bindings))) |
1764 | | Ast0.Circles(d,_) -> | |
1765 | Ast0.rewrap e | |
1766 | (Ast0.Circles | |
1767 | (d, | |
1be43e12 | 1768 | List.map whenfn |
34e49164 C |
1769 | (List.filter (function (x,v) -> x = (dot_term d)) bindings))) |
1770 | | Ast0.Stars(d,_) -> | |
1771 | Ast0.rewrap e | |
1772 | (Ast0.Stars | |
1773 | (d, | |
1be43e12 | 1774 | List.map whenfn |
34e49164 C |
1775 | (List.filter (function (x,v) -> x = (dot_term d)) bindings))) |
1776 | | _ -> e in | |
1777 | ||
b1b2de81 | 1778 | V0.flat_rebuilder |
34e49164 | 1779 | mcode mcode mcode mcode mcode mcode mcode mcode mcode mcode mcode mcode |
34e49164 | 1780 | (dots elist) donothing (dots plist) (dots slist) donothing donothing |
113803cf | 1781 | identfn exprfn tyfn initfn paramfn declfn stmtfn donothing donothing |
34e49164 C |
1782 | |
1783 | (* --------------------------------------------------------------------- *) | |
1784 | ||
1785 | let is_minus e = | |
1786 | match Ast0.get_mcodekind e with Ast0.MINUS(cell) -> true | _ -> false | |
1787 | ||
1788 | let context_required e = not(is_minus e) && not !Flag.sgrep_mode2 | |
1789 | ||
1790 | let disj_fail bindings e = | |
1791 | match bindings with | |
1792 | Some x -> Printf.fprintf stderr "no disj available at this type"; e | |
1793 | | None -> e | |
1794 | ||
1795 | (* isomorphism code is by default CONTEXT *) | |
1796 | let merge_plus model_mcode e_mcode = | |
1797 | match model_mcode with | |
1798 | Ast0.MINUS(mc) -> | |
1799 | (* add the replacement information at the root *) | |
1800 | (match e_mcode with | |
1801 | Ast0.MINUS(emc) -> | |
1802 | emc := | |
1803 | (match (!mc,!emc) with | |
1804 | (([],_),(x,t)) | ((x,_),([],t)) -> (x,t) | |
1805 | | _ -> failwith "how can we combine minuses?") | |
1806 | | _ -> failwith "not possible 6") | |
1807 | | Ast0.CONTEXT(mc) -> | |
1808 | (match e_mcode with | |
1809 | Ast0.CONTEXT(emc) -> | |
1810 | (* keep the logical line info as in the model *) | |
1811 | let (mba,tb,ta) = !mc in | |
1812 | let (eba,_,_) = !emc in | |
1813 | (* merging may be required when a term is replaced by a subterm *) | |
1814 | let merged = | |
1815 | match (mba,eba) with | |
1816 | (x,Ast.NOTHING) | (Ast.NOTHING,x) -> x | |
1817 | | (Ast.BEFORE(b1),Ast.BEFORE(b2)) -> Ast.BEFORE(b1@b2) | |
1818 | | (Ast.BEFORE(b),Ast.AFTER(a)) -> Ast.BEFOREAFTER(b,a) | |
1819 | | (Ast.BEFORE(b1),Ast.BEFOREAFTER(b2,a)) -> | |
1820 | Ast.BEFOREAFTER(b1@b2,a) | |
1821 | | (Ast.AFTER(a),Ast.BEFORE(b)) -> Ast.BEFOREAFTER(b,a) | |
1822 | | (Ast.AFTER(a1),Ast.AFTER(a2)) ->Ast.AFTER(a2@a1) | |
1823 | | (Ast.AFTER(a1),Ast.BEFOREAFTER(b,a2)) -> Ast.BEFOREAFTER(b,a2@a1) | |
1824 | | (Ast.BEFOREAFTER(b1,a),Ast.BEFORE(b2)) -> | |
1825 | Ast.BEFOREAFTER(b1@b2,a) | |
1826 | | (Ast.BEFOREAFTER(b,a1),Ast.AFTER(a2)) -> | |
1827 | Ast.BEFOREAFTER(b,a2@a1) | |
1828 | | (Ast.BEFOREAFTER(b1,a1),Ast.BEFOREAFTER(b2,a2)) -> | |
1829 | Ast.BEFOREAFTER(b1@b2,a2@a1) in | |
1830 | emc := (merged,tb,ta) | |
1831 | | Ast0.MINUS(emc) -> | |
1832 | let (anything_bef_aft,_,_) = !mc in | |
1833 | let (anythings,t) = !emc in | |
1834 | emc := | |
1835 | (match anything_bef_aft with | |
1836 | Ast.BEFORE(b) -> (b@anythings,t) | |
1837 | | Ast.AFTER(a) -> (anythings@a,t) | |
1838 | | Ast.BEFOREAFTER(b,a) -> (b@anythings@a,t) | |
1839 | | Ast.NOTHING -> (anythings,t)) | |
1840 | | _ -> failwith "not possible 7") | |
1841 | | Ast0.MIXED(_) -> failwith "not possible 8" | |
1842 | | Ast0.PLUS -> failwith "not possible 9" | |
1843 | ||
1844 | let copy_plus printer minusify model e = | |
1845 | if !Flag.sgrep_mode2 | |
1846 | then e (* no plus code, can cause a "not possible" error, so just avoid it *) | |
1847 | else | |
1848 | let e = | |
1849 | match Ast0.get_mcodekind model with | |
1850 | Ast0.MINUS(mc) -> minusify e | |
1851 | | Ast0.CONTEXT(mc) -> e | |
1852 | | _ -> failwith "not possible: copy_plus\n" in | |
1853 | merge_plus (Ast0.get_mcodekind model) (Ast0.get_mcodekind e); | |
1854 | e | |
1855 | ||
1856 | let copy_minus printer minusify model e = | |
1857 | match Ast0.get_mcodekind model with | |
1858 | Ast0.MINUS(mc) -> minusify e | |
1859 | | Ast0.CONTEXT(mc) -> e | |
1860 | | Ast0.MIXED(_) -> | |
1861 | if !Flag.sgrep_mode2 | |
1862 | then e | |
1863 | else failwith "not possible 8" | |
1864 | | Ast0.PLUS -> failwith "not possible 9" | |
1865 | ||
1866 | let whencode_allowed prev_ecount prev_icount prev_dcount | |
1867 | ecount icount dcount rest = | |
1868 | (* actually, if ecount or dcount is 0, the flag doesn't matter, because it | |
1869 | won't be tested *) | |
1870 | let other_ecount = (* number of edots *) | |
1871 | List.fold_left (function rest -> function (_,ec,ic,dc) -> ec + rest) | |
1872 | prev_ecount rest in | |
1873 | let other_icount = (* number of dots *) | |
1874 | List.fold_left (function rest -> function (_,ec,ic,dc) -> ic + rest) | |
1875 | prev_icount rest in | |
1876 | let other_dcount = (* number of dots *) | |
1877 | List.fold_left (function rest -> function (_,ec,ic,dc) -> dc + rest) | |
1878 | prev_dcount rest in | |
1879 | (ecount = 0 or other_ecount = 0, icount = 0 or other_icount = 0, | |
1880 | dcount = 0 or other_dcount = 0) | |
1881 | ||
1882 | (* copy the befores and afters to the instantiated code *) | |
1883 | let extra_copy_stmt_plus model e = | |
1884 | (if not !Flag.sgrep_mode2 (* sgrep has no plus code, so nothing to do *) | |
1885 | then | |
1886 | (match Ast0.unwrap model with | |
1887 | Ast0.FunDecl((info,bef),_,_,_,_,_,_,_,_) | |
1888 | | Ast0.Decl((info,bef),_) -> | |
1889 | (match Ast0.unwrap e with | |
1890 | Ast0.FunDecl((info,bef1),_,_,_,_,_,_,_,_) | |
1891 | | Ast0.Decl((info,bef1),_) -> | |
1892 | merge_plus bef bef1 | |
1893 | | _ -> merge_plus bef (Ast0.get_mcodekind e)) | |
1894 | | Ast0.IfThen(_,_,_,_,_,(info,aft)) | |
1895 | | Ast0.IfThenElse(_,_,_,_,_,_,_,(info,aft)) | |
1896 | | Ast0.While(_,_,_,_,_,(info,aft)) | |
1897 | | Ast0.For(_,_,_,_,_,_,_,_,_,(info,aft)) | |
1898 | | Ast0.Iterator(_,_,_,_,_,(info,aft)) -> | |
1899 | (match Ast0.unwrap e with | |
1900 | Ast0.IfThen(_,_,_,_,_,(info,aft1)) | |
1901 | | Ast0.IfThenElse(_,_,_,_,_,_,_,(info,aft1)) | |
1902 | | Ast0.While(_,_,_,_,_,(info,aft1)) | |
1903 | | Ast0.For(_,_,_,_,_,_,_,_,_,(info,aft1)) | |
1904 | | Ast0.Iterator(_,_,_,_,_,(info,aft1)) -> | |
1905 | merge_plus aft aft1 | |
1906 | | _ -> merge_plus aft (Ast0.get_mcodekind e)) | |
1907 | | _ -> ())); | |
1908 | e | |
1909 | ||
1910 | let extra_copy_other_plus model e = e | |
1911 | ||
1912 | (* --------------------------------------------------------------------- *) | |
1913 | ||
1914 | let mv_count = ref 0 | |
1915 | let new_mv (_,s) = | |
1916 | let ct = !mv_count in | |
1917 | mv_count := !mv_count + 1; | |
1918 | "_"^s^"_"^(string_of_int ct) | |
1919 | ||
1920 | let get_name = function | |
1921 | Ast.MetaIdDecl(ar,nm) -> | |
1922 | (nm,function nm -> Ast.MetaIdDecl(ar,nm)) | |
b1b2de81 C |
1923 | | Ast.MetaFreshIdDecl(nm,seed) -> |
1924 | (nm,function nm -> Ast.MetaFreshIdDecl(nm,seed)) | |
34e49164 C |
1925 | | Ast.MetaTypeDecl(ar,nm) -> |
1926 | (nm,function nm -> Ast.MetaTypeDecl(ar,nm)) | |
113803cf C |
1927 | | Ast.MetaInitDecl(ar,nm) -> |
1928 | (nm,function nm -> Ast.MetaInitDecl(ar,nm)) | |
34e49164 C |
1929 | | Ast.MetaListlenDecl(nm) -> |
1930 | failwith "should not be rebuilt" | |
1931 | | Ast.MetaParamDecl(ar,nm) -> | |
1932 | (nm,function nm -> Ast.MetaParamDecl(ar,nm)) | |
1933 | | Ast.MetaParamListDecl(ar,nm,nm1) -> | |
1934 | (nm,function nm -> Ast.MetaParamListDecl(ar,nm,nm1)) | |
1935 | | Ast.MetaConstDecl(ar,nm,ty) -> | |
1936 | (nm,function nm -> Ast.MetaConstDecl(ar,nm,ty)) | |
1937 | | Ast.MetaErrDecl(ar,nm) -> | |
1938 | (nm,function nm -> Ast.MetaErrDecl(ar,nm)) | |
1939 | | Ast.MetaExpDecl(ar,nm,ty) -> | |
1940 | (nm,function nm -> Ast.MetaExpDecl(ar,nm,ty)) | |
1941 | | Ast.MetaIdExpDecl(ar,nm,ty) -> | |
1942 | (nm,function nm -> Ast.MetaIdExpDecl(ar,nm,ty)) | |
1943 | | Ast.MetaLocalIdExpDecl(ar,nm,ty) -> | |
1944 | (nm,function nm -> Ast.MetaLocalIdExpDecl(ar,nm,ty)) | |
1945 | | Ast.MetaExpListDecl(ar,nm,nm1) -> | |
1946 | (nm,function nm -> Ast.MetaExpListDecl(ar,nm,nm1)) | |
1947 | | Ast.MetaStmDecl(ar,nm) -> | |
1948 | (nm,function nm -> Ast.MetaStmDecl(ar,nm)) | |
1949 | | Ast.MetaStmListDecl(ar,nm) -> | |
1950 | (nm,function nm -> Ast.MetaStmListDecl(ar,nm)) | |
1951 | | Ast.MetaFuncDecl(ar,nm) -> | |
1952 | (nm,function nm -> Ast.MetaFuncDecl(ar,nm)) | |
1953 | | Ast.MetaLocalFuncDecl(ar,nm) -> | |
1954 | (nm,function nm -> Ast.MetaLocalFuncDecl(ar,nm)) | |
1955 | | Ast.MetaPosDecl(ar,nm) -> | |
1956 | (nm,function nm -> Ast.MetaPosDecl(ar,nm)) | |
1957 | | Ast.MetaDeclarerDecl(ar,nm) -> | |
1958 | (nm,function nm -> Ast.MetaDeclarerDecl(ar,nm)) | |
1959 | | Ast.MetaIteratorDecl(ar,nm) -> | |
1960 | (nm,function nm -> Ast.MetaIteratorDecl(ar,nm)) | |
1961 | ||
1962 | let make_new_metavars metavars bindings = | |
1963 | let new_metavars = | |
1964 | List.filter | |
1965 | (function mv -> | |
1966 | let (s,_) = get_name mv in | |
1967 | try let _ = List.assoc s bindings in false with Not_found -> true) | |
1968 | metavars in | |
1969 | List.split | |
1970 | (List.map | |
1971 | (function mv -> | |
1972 | let (s,rebuild) = get_name mv in | |
1973 | let new_s = (!current_rule,new_mv s) in | |
1974 | (rebuild new_s, (s,new_s))) | |
1975 | new_metavars) | |
1976 | ||
1977 | (* --------------------------------------------------------------------- *) | |
1978 | ||
1979 | let do_nothing x = x | |
1980 | ||
1981 | let mkdisj matcher metavars alts e instantiater mkiso disj_maker minusify | |
1982 | rebuild_mcodes name printer extra_plus update_others = | |
1983 | let call_instantiate bindings mv_bindings alts = | |
1984 | List.concat | |
1985 | (List.map | |
1986 | (function (a,_,_,_) -> | |
1987 | nub | |
1988 | (* no need to create duplicates when the bindings have no effect *) | |
1989 | (List.map | |
1990 | (function bindings -> | |
1991 | Ast0.set_iso | |
1992 | (copy_plus printer minusify e | |
1993 | (extra_plus e | |
1994 | (instantiater bindings mv_bindings | |
1995 | (rebuild_mcodes a)))) | |
b1b2de81 | 1996 | ((name,mkiso a)::(Ast0.get_iso e))) (* keep count, not U *) |
34e49164 C |
1997 | bindings)) |
1998 | alts) in | |
1999 | let rec inner_loop all_alts prev_ecount prev_icount prev_dcount = function | |
2000 | [] -> Common.Left (prev_ecount, prev_icount, prev_dcount) | |
2001 | | ((pattern,ecount,icount,dcount)::rest) -> | |
2002 | let wc = | |
2003 | whencode_allowed prev_ecount prev_icount prev_dcount | |
2004 | ecount dcount icount rest in | |
2005 | (match matcher true (context_required e) wc pattern e init_env with | |
2006 | Fail(reason) -> | |
2007 | if reason = NonMatch || not !Flag_parsing_cocci.show_iso_failures | |
2008 | then () | |
2009 | else | |
2010 | (match matcher false false wc pattern e init_env with | |
2011 | OK _ -> | |
2012 | interpret_reason name (Ast0.get_line e) reason | |
2013 | (function () -> printer e) | |
2014 | | _ -> ()); | |
2015 | inner_loop all_alts (prev_ecount + ecount) (prev_icount + icount) | |
2016 | (prev_dcount + dcount) rest | |
2017 | | OK (bindings : (((string * string) * 'a) list list)) -> | |
2018 | let all_alts = | |
2019 | (* apply update_others to all patterns other than the matched | |
2020 | one. This is used to desigate the others as test | |
2021 | expressions in the TestExpression case *) | |
2022 | (List.map | |
2023 | (function (x,e,i,d) as all -> | |
2024 | if x = pattern | |
2025 | then all | |
2026 | else (update_others x,e,i,d)) | |
2027 | (List.hd all_alts)) :: | |
2028 | (List.map | |
2029 | (List.map (function (x,e,i,d) -> (update_others x,e,i,d))) | |
2030 | (List.tl all_alts)) in | |
2031 | (match List.concat all_alts with | |
2032 | [x] -> Common.Left (prev_ecount, prev_icount, prev_dcount) | |
2033 | | all_alts -> | |
2034 | let (new_metavars,mv_bindings) = | |
2035 | make_new_metavars metavars (nub(List.concat bindings)) in | |
2036 | Common.Right | |
2037 | (new_metavars, | |
2038 | call_instantiate bindings mv_bindings all_alts))) in | |
2039 | let rec outer_loop prev_ecount prev_icount prev_dcount = function | |
b1b2de81 | 2040 | [] | [[_]] (*only one alternative*) -> (0,[],e) (* nothing matched *) |
34e49164 C |
2041 | | (alts::rest) as all_alts -> |
2042 | match inner_loop all_alts prev_ecount prev_icount prev_dcount alts with | |
2043 | Common.Left(prev_ecount, prev_icount, prev_dcount) -> | |
2044 | outer_loop prev_ecount prev_icount prev_dcount rest | |
2045 | | Common.Right (new_metavars,res) -> | |
b1b2de81 | 2046 | (1,new_metavars, |
34e49164 | 2047 | copy_minus printer minusify e (disj_maker res)) in |
b1b2de81 C |
2048 | let (count,metavars,e) = outer_loop 0 0 0 alts in |
2049 | (count, metavars, e) | |
34e49164 C |
2050 | |
2051 | (* no one should ever look at the information stored in these mcodes *) | |
2052 | let disj_starter lst = | |
2053 | let old_info = Ast0.get_info(List.hd lst) in | |
0708f913 C |
2054 | let new_pos_info = |
2055 | { old_info.Ast0.pos_info with | |
2056 | Ast0.line_end = old_info.Ast0.pos_info.Ast0.line_start; | |
2057 | Ast0.logical_end = old_info.Ast0.pos_info.Ast0.logical_start; } in | |
34e49164 | 2058 | let info = |
0708f913 | 2059 | { Ast0.pos_info = new_pos_info; |
34e49164 C |
2060 | Ast0.attachable_start = false; Ast0.attachable_end = false; |
2061 | Ast0.mcode_start = []; Ast0.mcode_end = []; | |
2062 | Ast0.strings_before = []; Ast0.strings_after = [] } in | |
2063 | Ast0.make_mcode_info "(" info | |
2064 | ||
2065 | let disj_ender lst = | |
2066 | let old_info = Ast0.get_info(List.hd lst) in | |
0708f913 C |
2067 | let new_pos_info = |
2068 | { old_info.Ast0.pos_info with | |
2069 | Ast0.line_start = old_info.Ast0.pos_info.Ast0.line_end; | |
2070 | Ast0.logical_start = old_info.Ast0.pos_info.Ast0.logical_end; } in | |
34e49164 | 2071 | let info = |
0708f913 | 2072 | { Ast0.pos_info = new_pos_info; |
34e49164 C |
2073 | Ast0.attachable_start = false; Ast0.attachable_end = false; |
2074 | Ast0.mcode_start = []; Ast0.mcode_end = []; | |
2075 | Ast0.strings_before = []; Ast0.strings_after = [] } in | |
2076 | Ast0.make_mcode_info ")" info | |
2077 | ||
2078 | let disj_mid _ = Ast0.make_mcode "|" | |
2079 | ||
2080 | let make_disj_type tl = | |
2081 | let mids = | |
2082 | match tl with | |
2083 | [] -> failwith "bad disjunction" | |
2084 | | x::xs -> List.map disj_mid xs in | |
2085 | Ast0.context_wrap (Ast0.DisjType(disj_starter tl,tl,mids,disj_ender tl)) | |
2086 | let make_disj_stmt_list tl = | |
2087 | let mids = | |
2088 | match tl with | |
2089 | [] -> failwith "bad disjunction" | |
2090 | | x::xs -> List.map disj_mid xs in | |
2091 | Ast0.context_wrap (Ast0.Disj(disj_starter tl,tl,mids,disj_ender tl)) | |
2092 | let make_disj_expr model el = | |
2093 | let mids = | |
2094 | match el with | |
2095 | [] -> failwith "bad disjunction" | |
2096 | | x::xs -> List.map disj_mid xs in | |
2097 | let update_arg x = | |
2098 | if Ast0.get_arg_exp model then Ast0.set_arg_exp x else x in | |
2099 | let update_test x = | |
2100 | let x = if Ast0.get_test_pos model then Ast0.set_test_pos x else x in | |
2101 | if Ast0.get_test_exp model then Ast0.set_test_exp x else x in | |
2102 | let el = List.map update_arg (List.map update_test el) in | |
2103 | Ast0.context_wrap (Ast0.DisjExpr(disj_starter el,el,mids,disj_ender el)) | |
2104 | let make_disj_decl dl = | |
2105 | let mids = | |
2106 | match dl with | |
2107 | [] -> failwith "bad disjunction" | |
2108 | | x::xs -> List.map disj_mid xs in | |
2109 | Ast0.context_wrap (Ast0.DisjDecl(disj_starter dl,dl,mids,disj_ender dl)) | |
2110 | let make_disj_stmt sl = | |
2111 | let dotify x = Ast0.context_wrap (Ast0.DOTS[x]) in | |
2112 | let mids = | |
2113 | match sl with | |
2114 | [] -> failwith "bad disjunction" | |
2115 | | x::xs -> List.map disj_mid xs in | |
2116 | Ast0.context_wrap | |
2117 | (Ast0.Disj(disj_starter sl,List.map dotify sl,mids,disj_ender sl)) | |
2118 | ||
2119 | let transform_type (metavars,alts,name) e = | |
2120 | match alts with | |
2121 | (Ast0.TypeCTag(_)::_)::_ -> | |
2122 | (* start line is given to any leaves in the iso code *) | |
0708f913 C |
2123 | let start_line = |
2124 | Some ((Ast0.get_info e).Ast0.pos_info.Ast0.line_start) in | |
34e49164 C |
2125 | let alts = |
2126 | List.map | |
2127 | (List.map | |
2128 | (function | |
2129 | Ast0.TypeCTag(p) -> | |
b1b2de81 C |
2130 | (p,count_edots.VT0.combiner_rec_typeC p, |
2131 | count_idots.VT0.combiner_rec_typeC p, | |
2132 | count_dots.VT0.combiner_rec_typeC p) | |
34e49164 C |
2133 | | _ -> failwith "invalid alt")) |
2134 | alts in | |
2135 | mkdisj match_typeC metavars alts e | |
2136 | (function b -> function mv_b -> | |
b1b2de81 | 2137 | (instantiate b mv_b).VT0.rebuilder_rec_typeC) |
34e49164 | 2138 | (function t -> Ast0.TypeCTag t) |
b1b2de81 C |
2139 | make_disj_type make_minus.VT0.rebuilder_rec_typeC |
2140 | (rebuild_mcode start_line).VT0.rebuilder_rec_typeC | |
34e49164 | 2141 | name Unparse_ast0.typeC extra_copy_other_plus do_nothing |
b1b2de81 | 2142 | | _ -> (0,[],e) |
34e49164 C |
2143 | |
2144 | ||
2145 | let transform_expr (metavars,alts,name) e = | |
2146 | let process update_others = | |
2147 | (* start line is given to any leaves in the iso code *) | |
0708f913 C |
2148 | let start_line = |
2149 | Some ((Ast0.get_info e).Ast0.pos_info.Ast0.line_start) in | |
34e49164 C |
2150 | let alts = |
2151 | List.map | |
2152 | (List.map | |
2153 | (function | |
2154 | Ast0.ExprTag(p) | Ast0.ArgExprTag(p) | Ast0.TestExprTag(p) -> | |
b1b2de81 C |
2155 | (p,count_edots.VT0.combiner_rec_expression p, |
2156 | count_idots.VT0.combiner_rec_expression p, | |
2157 | count_dots.VT0.combiner_rec_expression p) | |
34e49164 C |
2158 | | _ -> failwith "invalid alt")) |
2159 | alts in | |
2160 | mkdisj match_expr metavars alts e | |
2161 | (function b -> function mv_b -> | |
b1b2de81 | 2162 | (instantiate b mv_b).VT0.rebuilder_rec_expression) |
34e49164 | 2163 | (function e -> Ast0.ExprTag e) |
485bce71 | 2164 | (make_disj_expr e) |
b1b2de81 C |
2165 | make_minus.VT0.rebuilder_rec_expression |
2166 | (rebuild_mcode start_line).VT0.rebuilder_rec_expression | |
34e49164 C |
2167 | name Unparse_ast0.expression extra_copy_other_plus update_others in |
2168 | match alts with | |
2169 | (Ast0.ExprTag(_)::_)::_ -> process do_nothing | |
2170 | | (Ast0.ArgExprTag(_)::_)::_ when Ast0.get_arg_exp e -> process do_nothing | |
2171 | | (Ast0.TestExprTag(_)::_)::_ when Ast0.get_test_pos e -> | |
2172 | process Ast0.set_test_exp | |
b1b2de81 | 2173 | | _ -> (0,[],e) |
34e49164 C |
2174 | |
2175 | let transform_decl (metavars,alts,name) e = | |
2176 | match alts with | |
2177 | (Ast0.DeclTag(_)::_)::_ -> | |
2178 | (* start line is given to any leaves in the iso code *) | |
0708f913 C |
2179 | let start_line = |
2180 | Some (Ast0.get_info e).Ast0.pos_info.Ast0.line_start in | |
34e49164 C |
2181 | let alts = |
2182 | List.map | |
2183 | (List.map | |
2184 | (function | |
2185 | Ast0.DeclTag(p) -> | |
b1b2de81 C |
2186 | (p,count_edots.VT0.combiner_rec_declaration p, |
2187 | count_idots.VT0.combiner_rec_declaration p, | |
2188 | count_dots.VT0.combiner_rec_declaration p) | |
34e49164 C |
2189 | | _ -> failwith "invalid alt")) |
2190 | alts in | |
2191 | mkdisj match_decl metavars alts e | |
2192 | (function b -> function mv_b -> | |
b1b2de81 | 2193 | (instantiate b mv_b).VT0.rebuilder_rec_declaration) |
34e49164 C |
2194 | (function d -> Ast0.DeclTag d) |
2195 | make_disj_decl | |
b1b2de81 C |
2196 | make_minus.VT0.rebuilder_rec_declaration |
2197 | (rebuild_mcode start_line).VT0.rebuilder_rec_declaration | |
34e49164 | 2198 | name Unparse_ast0.declaration extra_copy_other_plus do_nothing |
b1b2de81 | 2199 | | _ -> (0,[],e) |
34e49164 C |
2200 | |
2201 | let transform_stmt (metavars,alts,name) e = | |
2202 | match alts with | |
2203 | (Ast0.StmtTag(_)::_)::_ -> | |
2204 | (* start line is given to any leaves in the iso code *) | |
0708f913 C |
2205 | let start_line = |
2206 | Some (Ast0.get_info e).Ast0.pos_info.Ast0.line_start in | |
34e49164 C |
2207 | let alts = |
2208 | List.map | |
2209 | (List.map | |
2210 | (function | |
2211 | Ast0.StmtTag(p) -> | |
b1b2de81 C |
2212 | (p,count_edots.VT0.combiner_rec_statement p, |
2213 | count_idots.VT0.combiner_rec_statement p, | |
2214 | count_dots.VT0.combiner_rec_statement p) | |
34e49164 C |
2215 | | _ -> failwith "invalid alt")) |
2216 | alts in | |
2217 | mkdisj match_statement metavars alts e | |
2218 | (function b -> function mv_b -> | |
b1b2de81 | 2219 | (instantiate b mv_b).VT0.rebuilder_rec_statement) |
34e49164 | 2220 | (function s -> Ast0.StmtTag s) |
b1b2de81 C |
2221 | make_disj_stmt make_minus.VT0.rebuilder_rec_statement |
2222 | (rebuild_mcode start_line).VT0.rebuilder_rec_statement | |
34e49164 | 2223 | name (Unparse_ast0.statement "") extra_copy_stmt_plus do_nothing |
b1b2de81 | 2224 | | _ -> (0,[],e) |
34e49164 C |
2225 | |
2226 | (* sort of a hack, because there is no disj at top level *) | |
2227 | let transform_top (metavars,alts,name) e = | |
2228 | match Ast0.unwrap e with | |
2229 | Ast0.DECL(declstm) -> | |
2230 | (try | |
2231 | let strip alts = | |
2232 | List.map | |
2233 | (List.map | |
2234 | (function | |
2235 | Ast0.DotsStmtTag(d) -> | |
2236 | (match Ast0.unwrap d with | |
2237 | Ast0.DOTS([s]) -> Ast0.StmtTag(s) | |
2238 | | _ -> raise (Failure "")) | |
2239 | | _ -> raise (Failure ""))) | |
2240 | alts in | |
b1b2de81 C |
2241 | let (count,mv,s) = transform_stmt (metavars,strip alts,name) declstm in |
2242 | (count,mv,Ast0.rewrap e (Ast0.DECL(s))) | |
2243 | with Failure _ -> (0,[],e)) | |
34e49164 | 2244 | | Ast0.CODE(stmts) -> |
b1b2de81 | 2245 | let (count,mv,res) = |
34e49164 C |
2246 | match alts with |
2247 | (Ast0.DotsStmtTag(_)::_)::_ -> | |
2248 | (* start line is given to any leaves in the iso code *) | |
0708f913 C |
2249 | let start_line = |
2250 | Some ((Ast0.get_info e).Ast0.pos_info.Ast0.line_start) in | |
34e49164 C |
2251 | let alts = |
2252 | List.map | |
2253 | (List.map | |
2254 | (function | |
2255 | Ast0.DotsStmtTag(p) -> | |
b1b2de81 C |
2256 | (p,count_edots.VT0.combiner_rec_statement_dots p, |
2257 | count_idots.VT0.combiner_rec_statement_dots p, | |
2258 | count_dots.VT0.combiner_rec_statement_dots p) | |
34e49164 C |
2259 | | _ -> failwith "invalid alt")) |
2260 | alts in | |
2261 | mkdisj match_statement_dots metavars alts stmts | |
2262 | (function b -> function mv_b -> | |
b1b2de81 | 2263 | (instantiate b mv_b).VT0.rebuilder_rec_statement_dots) |
34e49164 C |
2264 | (function s -> Ast0.DotsStmtTag s) |
2265 | (function x -> | |
2266 | Ast0.rewrap e (Ast0.DOTS([make_disj_stmt_list x]))) | |
485bce71 | 2267 | (function x -> |
b1b2de81 C |
2268 | make_minus.VT0.rebuilder_rec_statement_dots x) |
2269 | (rebuild_mcode start_line).VT0.rebuilder_rec_statement_dots | |
34e49164 | 2270 | name Unparse_ast0.statement_dots extra_copy_other_plus do_nothing |
b1b2de81 C |
2271 | | _ -> (0,[],stmts) in |
2272 | (count,mv,Ast0.rewrap e (Ast0.CODE res)) | |
2273 | | _ -> (0,[],e) | |
34e49164 C |
2274 | |
2275 | (* --------------------------------------------------------------------- *) | |
2276 | ||
2277 | let transform (alts : isomorphism) t = | |
2278 | (* the following ugliness is because rebuilder only returns a new term *) | |
2279 | let extra_meta_decls = ref ([] : Ast_cocci.metavar list) in | |
b1b2de81 C |
2280 | let in_limit n = function |
2281 | None -> true | |
2282 | | Some n1 -> | |
2283 | n < n1 or | |
2284 | ((if !Flag_parsing_cocci.show_iso_failures | |
2285 | then Common.pr2_once "execeeded iso threshold, see -iso_limit option"); | |
2286 | false) in | |
2287 | let bind x y = x + y in | |
2288 | let option_default = 0 in | |
34e49164 | 2289 | let exprfn r k e = |
b1b2de81 C |
2290 | let (e_count,e) = k e in |
2291 | if in_limit e_count !Flag_parsing_cocci.iso_limit | |
2292 | then | |
2293 | let (count,extra_meta,exp) = transform_expr alts e in | |
2294 | extra_meta_decls := extra_meta @ !extra_meta_decls; | |
2295 | (bind count e_count,exp) | |
2296 | else (e_count,e) in | |
34e49164 C |
2297 | |
2298 | let declfn r k e = | |
b1b2de81 C |
2299 | let (e_count,e) = k e in |
2300 | if in_limit e_count !Flag_parsing_cocci.iso_limit | |
2301 | then | |
2302 | let (count,extra_meta,dec) = transform_decl alts e in | |
2303 | extra_meta_decls := extra_meta @ !extra_meta_decls; | |
2304 | (bind count e_count,dec) | |
2305 | else (e_count,e) in | |
34e49164 C |
2306 | |
2307 | let stmtfn r k e = | |
b1b2de81 C |
2308 | let (e_count,e) = k e in |
2309 | if in_limit e_count !Flag_parsing_cocci.iso_limit | |
2310 | then | |
2311 | let (count,extra_meta,stm) = transform_stmt alts e in | |
2312 | extra_meta_decls := extra_meta @ !extra_meta_decls; | |
2313 | (bind count e_count,stm) | |
2314 | else (e_count,e) in | |
faf9a90c | 2315 | |
34e49164 | 2316 | let typefn r k e = |
b1b2de81 C |
2317 | let (continue,e_count,e) = |
2318 | match Ast0.unwrap e with | |
2319 | Ast0.Signed(signb,tyb) -> | |
faf9a90c C |
2320 | (* Hack! How else to prevent iso from applying under an |
2321 | unsigned??? *) | |
b1b2de81 C |
2322 | (true,0,e) |
2323 | | _ -> | |
2324 | let (e_count,e) = k e in | |
2325 | if in_limit e_count !Flag_parsing_cocci.iso_limit | |
2326 | then (true,e_count,e) | |
2327 | else (false,e_count,e) in | |
2328 | if continue | |
2329 | then | |
2330 | let (count,extra_meta,ty) = transform_type alts e in | |
2331 | extra_meta_decls := extra_meta @ !extra_meta_decls; | |
2332 | (bind count e_count,ty) | |
2333 | else (e_count,e) in | |
faf9a90c | 2334 | |
34e49164 | 2335 | let topfn r k e = |
b1b2de81 C |
2336 | let (e_count,e) = k e in |
2337 | if in_limit e_count !Flag_parsing_cocci.iso_limit | |
2338 | then | |
2339 | let (count,extra_meta,ty) = transform_top alts e in | |
2340 | extra_meta_decls := extra_meta @ !extra_meta_decls; | |
2341 | (bind count e_count,ty) | |
2342 | else (e_count,e) in | |
faf9a90c | 2343 | |
34e49164 | 2344 | let res = |
b1b2de81 C |
2345 | V0.combiner_rebuilder bind option_default |
2346 | {V0.combiner_rebuilder_functions with | |
2347 | VT0.combiner_rebuilder_exprfn = exprfn; | |
2348 | VT0.combiner_rebuilder_tyfn = typefn; | |
2349 | VT0.combiner_rebuilder_declfn = declfn; | |
2350 | VT0.combiner_rebuilder_stmtfn = stmtfn; | |
2351 | VT0.combiner_rebuilder_topfn = topfn} in | |
2352 | let (_,res) = res.VT0.top_level t in | |
34e49164 C |
2353 | (!extra_meta_decls,res) |
2354 | ||
2355 | (* --------------------------------------------------------------------- *) | |
2356 | ||
2357 | (* should be done by functorizing the parser to use wrap or context_wrap *) | |
2358 | let rewrap = | |
708f4980 | 2359 | let mcode (x,a,i,mc,pos,adj) = (x,a,i,Ast0.context_befaft(),pos,adj) in |
34e49164 | 2360 | let donothing r k e = Ast0.context_wrap(Ast0.unwrap(k e)) in |
b1b2de81 | 2361 | V0.flat_rebuilder |
34e49164 | 2362 | mcode mcode mcode mcode mcode mcode mcode mcode mcode mcode mcode mcode |
34e49164 C |
2363 | donothing donothing donothing donothing donothing donothing |
2364 | donothing donothing donothing donothing donothing donothing donothing | |
2365 | donothing donothing | |
2366 | ||
2367 | let rewrap_anything = function | |
2368 | Ast0.DotsExprTag(d) -> | |
b1b2de81 | 2369 | Ast0.DotsExprTag(rewrap.VT0.rebuilder_rec_expression_dots d) |
34e49164 | 2370 | | Ast0.DotsInitTag(d) -> |
b1b2de81 | 2371 | Ast0.DotsInitTag(rewrap.VT0.rebuilder_rec_initialiser_list d) |
34e49164 | 2372 | | Ast0.DotsParamTag(d) -> |
b1b2de81 | 2373 | Ast0.DotsParamTag(rewrap.VT0.rebuilder_rec_parameter_list d) |
34e49164 | 2374 | | Ast0.DotsStmtTag(d) -> |
b1b2de81 | 2375 | Ast0.DotsStmtTag(rewrap.VT0.rebuilder_rec_statement_dots d) |
34e49164 | 2376 | | Ast0.DotsDeclTag(d) -> |
b1b2de81 | 2377 | Ast0.DotsDeclTag(rewrap.VT0.rebuilder_rec_declaration_dots d) |
34e49164 | 2378 | | Ast0.DotsCaseTag(d) -> |
b1b2de81 C |
2379 | Ast0.DotsCaseTag(rewrap.VT0.rebuilder_rec_case_line_dots d) |
2380 | | Ast0.IdentTag(d) -> Ast0.IdentTag(rewrap.VT0.rebuilder_rec_ident d) | |
2381 | | Ast0.ExprTag(d) -> Ast0.ExprTag(rewrap.VT0.rebuilder_rec_expression d) | |
2382 | | Ast0.ArgExprTag(d) -> | |
2383 | Ast0.ArgExprTag(rewrap.VT0.rebuilder_rec_expression d) | |
2384 | | Ast0.TestExprTag(d) -> | |
2385 | Ast0.TestExprTag(rewrap.VT0.rebuilder_rec_expression d) | |
2386 | | Ast0.TypeCTag(d) -> Ast0.TypeCTag(rewrap.VT0.rebuilder_rec_typeC d) | |
2387 | | Ast0.InitTag(d) -> Ast0.InitTag(rewrap.VT0.rebuilder_rec_initialiser d) | |
2388 | | Ast0.ParamTag(d) -> Ast0.ParamTag(rewrap.VT0.rebuilder_rec_parameter d) | |
2389 | | Ast0.DeclTag(d) -> Ast0.DeclTag(rewrap.VT0.rebuilder_rec_declaration d) | |
2390 | | Ast0.StmtTag(d) -> Ast0.StmtTag(rewrap.VT0.rebuilder_rec_statement d) | |
2391 | | Ast0.CaseLineTag(d) -> | |
2392 | Ast0.CaseLineTag(rewrap.VT0.rebuilder_rec_case_line d) | |
2393 | | Ast0.TopTag(d) -> Ast0.TopTag(rewrap.VT0.rebuilder_rec_top_level d) | |
1be43e12 C |
2394 | | Ast0.IsoWhenTag(_) | Ast0.IsoWhenTTag(_) | Ast0.IsoWhenFTag(_) -> |
2395 | failwith "only for isos within iso phase" | |
34e49164 C |
2396 | | Ast0.MetaPosTag(p) -> Ast0.MetaPosTag(p) |
2397 | ||
2398 | (* --------------------------------------------------------------------- *) | |
2399 | ||
2400 | let apply_isos isos rule rule_name = | |
2401 | if isos = [] | |
2402 | then ([],rule) | |
2403 | else | |
2404 | begin | |
2405 | current_rule := rule_name; | |
2406 | let isos = | |
2407 | List.map | |
2408 | (function (metavars,iso,name) -> | |
2409 | (metavars,List.map (List.map rewrap_anything) iso,name)) | |
2410 | isos in | |
2411 | let (extra_meta,rule) = | |
2412 | List.split | |
2413 | (List.map | |
2414 | (function t -> | |
2415 | List.fold_left | |
2416 | (function (extra_meta,t) -> function iso -> | |
2417 | let (new_extra_meta,t) = transform iso t in | |
2418 | (new_extra_meta@extra_meta,t)) | |
2419 | ([],t) isos) | |
2420 | rule) in | |
2421 | (List.concat extra_meta, Compute_lines.compute_lines rule) | |
2422 | end |