Commit | Line | Data |
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34e49164 C |
1 | (* Potential problem: offset of mcode is not updated when an iso is |
2 | instantiated, implying that a term may end up with many mcodes with the | |
3 | same offset. On the other hand, at the moment offset only seems to be used | |
4 | before this phase. Furthermore add_dot_binding relies on the offset to | |
5 | remain the same between matching an iso and instantiating it with bindings. *) | |
6 | ||
7 | (* --------------------------------------------------------------------- *) | |
8 | (* match a SmPL expression against a SmPL abstract syntax tree, | |
9 | either - or + *) | |
10 | ||
11 | module Ast = Ast_cocci | |
12 | module Ast0 = Ast0_cocci | |
13 | module V0 = Visitor_ast0 | |
b1b2de81 | 14 | module VT0 = Visitor_ast0_types |
34e49164 C |
15 | |
16 | let current_rule = ref "" | |
17 | ||
18 | (* --------------------------------------------------------------------- *) | |
19 | ||
20 | type isomorphism = | |
21 | Ast_cocci.metavar list * Ast0_cocci.anything list list * string (* name *) | |
22 | ||
23 | let strip_info = | |
708f4980 | 24 | let mcode (term,_,_,_,_,_) = |
951c7801 C |
25 | (term,Ast0.NONE,Ast0.default_info(),Ast0.PLUS Ast.ONE, |
26 | ref Ast0.NoMetaPos,-1) in | |
34e49164 C |
27 | let donothing r k e = |
28 | let x = k e in | |
29 | {(Ast0.wrap (Ast0.unwrap x)) with | |
951c7801 | 30 | Ast0.mcodekind = ref (Ast0.PLUS Ast.ONE); |
34e49164 | 31 | Ast0.true_if_test = x.Ast0.true_if_test} in |
b1b2de81 | 32 | V0.flat_rebuilder |
34e49164 | 33 | mcode mcode mcode mcode mcode mcode mcode mcode mcode mcode mcode mcode |
34e49164 C |
34 | donothing donothing donothing donothing donothing donothing |
35 | donothing donothing donothing donothing donothing donothing donothing | |
36 | donothing donothing | |
37 | ||
38 | let anything_equal = function | |
39 | (Ast0.DotsExprTag(d1),Ast0.DotsExprTag(d2)) -> | |
40 | failwith "not a possible variable binding" (*not sure why these are pbs*) | |
41 | | (Ast0.DotsInitTag(d1),Ast0.DotsInitTag(d2)) -> | |
42 | failwith "not a possible variable binding" | |
43 | | (Ast0.DotsParamTag(d1),Ast0.DotsParamTag(d2)) -> | |
44 | failwith "not a possible variable binding" | |
45 | | (Ast0.DotsStmtTag(d1),Ast0.DotsStmtTag(d2)) -> | |
b1b2de81 C |
46 | (strip_info.VT0.rebuilder_rec_statement_dots d1) = |
47 | (strip_info.VT0.rebuilder_rec_statement_dots d2) | |
34e49164 C |
48 | | (Ast0.DotsDeclTag(d1),Ast0.DotsDeclTag(d2)) -> |
49 | failwith "not a possible variable binding" | |
50 | | (Ast0.DotsCaseTag(d1),Ast0.DotsCaseTag(d2)) -> | |
51 | failwith "not a possible variable binding" | |
52 | | (Ast0.IdentTag(d1),Ast0.IdentTag(d2)) -> | |
fc1ad971 C |
53 | (strip_info.VT0.rebuilder_rec_ident d1) = |
54 | (strip_info.VT0.rebuilder_rec_ident d2) | |
34e49164 | 55 | | (Ast0.ExprTag(d1),Ast0.ExprTag(d2)) -> |
b1b2de81 C |
56 | (strip_info.VT0.rebuilder_rec_expression d1) = |
57 | (strip_info.VT0.rebuilder_rec_expression d2) | |
34e49164 C |
58 | | (Ast0.ArgExprTag(_),_) | (_,Ast0.ArgExprTag(_)) -> |
59 | failwith "not possible - only in isos1" | |
60 | | (Ast0.TestExprTag(_),_) | (_,Ast0.TestExprTag(_)) -> | |
61 | failwith "not possible - only in isos1" | |
62 | | (Ast0.TypeCTag(d1),Ast0.TypeCTag(d2)) -> | |
b1b2de81 C |
63 | (strip_info.VT0.rebuilder_rec_typeC d1) = |
64 | (strip_info.VT0.rebuilder_rec_typeC d2) | |
34e49164 | 65 | | (Ast0.InitTag(d1),Ast0.InitTag(d2)) -> |
b1b2de81 C |
66 | (strip_info.VT0.rebuilder_rec_initialiser d1) = |
67 | (strip_info.VT0.rebuilder_rec_initialiser d2) | |
34e49164 | 68 | | (Ast0.ParamTag(d1),Ast0.ParamTag(d2)) -> |
b1b2de81 C |
69 | (strip_info.VT0.rebuilder_rec_parameter d1) = |
70 | (strip_info.VT0.rebuilder_rec_parameter d2) | |
34e49164 | 71 | | (Ast0.DeclTag(d1),Ast0.DeclTag(d2)) -> |
b1b2de81 C |
72 | (strip_info.VT0.rebuilder_rec_declaration d1) = |
73 | (strip_info.VT0.rebuilder_rec_declaration d2) | |
34e49164 | 74 | | (Ast0.StmtTag(d1),Ast0.StmtTag(d2)) -> |
b1b2de81 C |
75 | (strip_info.VT0.rebuilder_rec_statement d1) = |
76 | (strip_info.VT0.rebuilder_rec_statement d2) | |
34e49164 | 77 | | (Ast0.CaseLineTag(d1),Ast0.CaseLineTag(d2)) -> |
b1b2de81 C |
78 | (strip_info.VT0.rebuilder_rec_case_line d1) = |
79 | (strip_info.VT0.rebuilder_rec_case_line d2) | |
34e49164 | 80 | | (Ast0.TopTag(d1),Ast0.TopTag(d2)) -> |
b1b2de81 C |
81 | (strip_info.VT0.rebuilder_rec_top_level d1) = |
82 | (strip_info.VT0.rebuilder_rec_top_level d2) | |
1be43e12 C |
83 | | (Ast0.IsoWhenTTag(_),_) | (_,Ast0.IsoWhenTTag(_)) -> |
84 | failwith "only for isos within iso phase" | |
85 | | (Ast0.IsoWhenFTag(_),_) | (_,Ast0.IsoWhenFTag(_)) -> | |
86 | failwith "only for isos within iso phase" | |
34e49164 C |
87 | | (Ast0.IsoWhenTag(_),_) | (_,Ast0.IsoWhenTag(_)) -> |
88 | failwith "only for isos within iso phase" | |
89 | | _ -> false | |
90 | ||
708f4980 C |
91 | let term (var1,_,_,_,_,_) = var1 |
92 | let dot_term (var1,_,info,_,_,_) = | |
0708f913 | 93 | ("", var1 ^ (string_of_int info.Ast0.pos_info.Ast0.offset)) |
34e49164 C |
94 | |
95 | ||
96 | type reason = | |
97 | NotPure of Ast0.pure * (string * string) * Ast0.anything | |
98 | | NotPureLength of (string * string) | |
99 | | ContextRequired of Ast0.anything | |
100 | | NonMatch | |
101 | | Braces of Ast0.statement | |
102 | | Position of string * string | |
485bce71 | 103 | | TypeMatch of reason list |
34e49164 | 104 | |
485bce71 | 105 | let rec interpret_reason name line reason printer = |
34e49164 C |
106 | Printf.printf |
107 | "warning: iso %s does not match the code below on line %d\n" name line; | |
108 | printer(); Format.print_newline(); | |
109 | match reason with | |
110 | NotPure(Ast0.Pure,(_,var),nonpure) -> | |
111 | Printf.printf | |
112 | "pure metavariable %s is matched against the following nonpure code:\n" | |
113 | var; | |
114 | Unparse_ast0.unparse_anything nonpure | |
115 | | NotPure(Ast0.Context,(_,var),nonpure) -> | |
116 | Printf.printf | |
117 | "context metavariable %s is matched against the following\nnoncontext code:\n" | |
118 | var; | |
119 | Unparse_ast0.unparse_anything nonpure | |
120 | | NotPure(Ast0.PureContext,(_,var),nonpure) -> | |
121 | Printf.printf | |
122 | "pure context metavariable %s is matched against the following\nnonpure or noncontext code:\n" | |
123 | var; | |
124 | Unparse_ast0.unparse_anything nonpure | |
125 | | NotPureLength((_,var)) -> | |
126 | Printf.printf | |
127 | "pure metavariable %s is matched against too much or too little code\n" | |
128 | var; | |
129 | | ContextRequired(term) -> | |
130 | Printf.printf | |
131 | "the following code matched is not uniformly minus or context,\nor contains a disjunction:\n"; | |
132 | Unparse_ast0.unparse_anything term | |
133 | | Braces(s) -> | |
134 | Printf.printf "braces must be all minus (plus code allowed) or all\ncontext (plus code not allowed in the body) to match:\n"; | |
135 | Unparse_ast0.statement "" s; | |
136 | Format.print_newline() | |
137 | | Position(rule,name) -> | |
138 | Printf.printf "position variable %s.%s conflicts with an isomorphism\n" | |
139 | rule name; | |
485bce71 C |
140 | | TypeMatch reason_list -> |
141 | List.iter (function r -> interpret_reason name line r printer) | |
142 | reason_list | |
34e49164 C |
143 | | _ -> failwith "not possible" |
144 | ||
145 | type 'a either = OK of 'a | Fail of reason | |
146 | ||
147 | let add_binding var exp bindings = | |
148 | let var = term var in | |
149 | let attempt bindings = | |
150 | try | |
151 | let cur = List.assoc var bindings in | |
152 | if anything_equal(exp,cur) then [bindings] else [] | |
153 | with Not_found -> [((var,exp)::bindings)] in | |
154 | match List.concat(List.map attempt bindings) with | |
155 | [] -> Fail NonMatch | |
156 | | x -> OK x | |
157 | ||
158 | let add_dot_binding var exp bindings = | |
159 | let var = dot_term var in | |
160 | let attempt bindings = | |
161 | try | |
162 | let cur = List.assoc var bindings in | |
163 | if anything_equal(exp,cur) then [bindings] else [] | |
164 | with Not_found -> [((var,exp)::bindings)] in | |
165 | match List.concat(List.map attempt bindings) with | |
166 | [] -> Fail NonMatch | |
167 | | x -> OK x | |
168 | ||
169 | (* multi-valued *) | |
170 | let add_multi_dot_binding var exp bindings = | |
171 | let var = dot_term var in | |
172 | let attempt bindings = [((var,exp)::bindings)] in | |
173 | match List.concat(List.map attempt bindings) with | |
174 | [] -> Fail NonMatch | |
175 | | x -> OK x | |
176 | ||
177 | let rec nub ls = | |
178 | match ls with | |
179 | [] -> [] | |
180 | | (x::xs) when (List.mem x xs) -> nub xs | |
181 | | (x::xs) -> x::(nub xs) | |
182 | ||
183 | (* --------------------------------------------------------------------- *) | |
184 | ||
185 | let init_env = [[]] | |
186 | ||
187 | let debug str m binding = | |
188 | let res = m binding in | |
189 | (match res with | |
190 | None -> Printf.printf "%s: failed\n" str | |
191 | | Some binding -> | |
192 | List.iter | |
193 | (function binding -> | |
194 | Printf.printf "%s: %s\n" str | |
195 | (String.concat " " (List.map (function (x,_) -> x) binding))) | |
196 | binding); | |
197 | res | |
198 | ||
199 | let conjunct_bindings | |
200 | (m1 : 'binding -> 'binding either) | |
201 | (m2 : 'binding -> 'binding either) | |
202 | (binding : 'binding) : 'binding either = | |
203 | match m1 binding with Fail(reason) -> Fail(reason) | OK binding -> m2 binding | |
204 | ||
205 | let rec conjunct_many_bindings = function | |
206 | [] -> failwith "not possible" | |
207 | | [x] -> x | |
208 | | x::xs -> conjunct_bindings x (conjunct_many_bindings xs) | |
209 | ||
708f4980 | 210 | let mcode_equal (x,_,_,_,_,_) (y,_,_,_,_,_) = x = y |
34e49164 C |
211 | |
212 | let return b binding = if b then OK binding else Fail NonMatch | |
213 | let return_false reason binding = Fail reason | |
214 | ||
215 | let match_option f t1 t2 = | |
216 | match (t1,t2) with | |
217 | (Some t1, Some t2) -> f t1 t2 | |
218 | | (None, None) -> return true | |
219 | | _ -> return false | |
220 | ||
221 | let bool_match_option f t1 t2 = | |
222 | match (t1,t2) with | |
223 | (Some t1, Some t2) -> f t1 t2 | |
224 | | (None, None) -> true | |
225 | | _ -> false | |
226 | ||
227 | (* context_required is for the example | |
228 | if ( | |
229 | + (int * ) | |
230 | x == NULL) | |
231 | where we can't change x == NULL to eg NULL == x. So there can either be | |
232 | nothing attached to the root or the term has to be all removed. | |
233 | if would be nice if we knew more about the relationship between the - and + | |
234 | code, because in the case where the + code is a separate statement in a | |
235 | sequence, this is not a problem. Perhaps something could be done in | |
236 | insert_plus | |
237 | ||
238 | The example seems strange. Why isn't the cast attached to x? | |
239 | *) | |
240 | let is_context e = | |
241 | !Flag.sgrep_mode2 or (* everything is context for sgrep *) | |
242 | (match Ast0.get_mcodekind e with | |
243 | Ast0.CONTEXT(cell) -> true | |
244 | | _ -> false) | |
245 | ||
246 | (* needs a special case when there is a Disj or an empty DOTS | |
247 | the following stops at the statement level, and gives true if one | |
248 | statement is replaced by another *) | |
249 | let rec is_pure_context s = | |
250 | !Flag.sgrep_mode2 or (* everything is context for sgrep *) | |
251 | (match Ast0.unwrap s with | |
252 | Ast0.Disj(starter,statement_dots_list,mids,ender) -> | |
253 | List.for_all | |
254 | (function x -> | |
255 | match Ast0.undots x with | |
256 | [s] -> is_pure_context s | |
257 | | _ -> false (* could we do better? *)) | |
258 | statement_dots_list | |
259 | | _ -> | |
260 | (match Ast0.get_mcodekind s with | |
261 | Ast0.CONTEXT(mc) -> | |
262 | (match !mc with | |
263 | (Ast.NOTHING,_,_) -> true | |
264 | | _ -> false) | |
265 | | Ast0.MINUS(mc) -> | |
266 | (match !mc with | |
267 | (* do better for the common case of replacing a stmt by another one *) | |
268 | ([[Ast.StatementTag(s)]],_) -> | |
269 | (match Ast.unwrap s with | |
270 | Ast.IfThen(_,_,_) -> false (* potentially dangerous *) | |
271 | | _ -> true) | |
951c7801 | 272 | | (_,_) -> false) |
34e49164 C |
273 | | _ -> false)) |
274 | ||
275 | let is_minus e = | |
276 | match Ast0.get_mcodekind e with Ast0.MINUS(cell) -> true | _ -> false | |
277 | ||
278 | let match_list matcher is_list_matcher do_list_match la lb = | |
279 | let rec loop = function | |
280 | ([],[]) -> return true | |
281 | | ([x],lb) when is_list_matcher x -> do_list_match x lb | |
282 | | (x::xs,y::ys) -> conjunct_bindings (matcher x y) (loop (xs,ys)) | |
283 | | _ -> return false in | |
284 | loop (la,lb) | |
285 | ||
286 | let match_maker checks_needed context_required whencode_allowed = | |
287 | ||
288 | let check_mcode pmc cmc binding = | |
289 | if checks_needed | |
290 | then | |
291 | match Ast0.get_pos cmc with | |
292 | (Ast0.MetaPos (name,_,_)) as x -> | |
293 | (match Ast0.get_pos pmc with | |
294 | Ast0.MetaPos (name1,_,_) -> | |
295 | add_binding name1 (Ast0.MetaPosTag x) binding | |
296 | | Ast0.NoMetaPos -> | |
297 | let (rule,name) = Ast0.unwrap_mcode name in | |
298 | Fail (Position(rule,name))) | |
299 | | Ast0.NoMetaPos -> OK binding | |
300 | else OK binding in | |
301 | ||
302 | let match_dots matcher is_list_matcher do_list_match d1 d2 = | |
303 | match (Ast0.unwrap d1, Ast0.unwrap d2) with | |
304 | (Ast0.DOTS(la),Ast0.DOTS(lb)) | |
305 | | (Ast0.CIRCLES(la),Ast0.CIRCLES(lb)) | |
306 | | (Ast0.STARS(la),Ast0.STARS(lb)) -> | |
307 | match_list matcher is_list_matcher (do_list_match d2) la lb | |
308 | | _ -> return false in | |
309 | ||
310 | let is_elist_matcher el = | |
311 | match Ast0.unwrap el with Ast0.MetaExprList(_,_,_) -> true | _ -> false in | |
312 | ||
313 | let is_plist_matcher pl = | |
314 | match Ast0.unwrap pl with Ast0.MetaParamList(_,_,_) -> true | _ -> false in | |
315 | ||
316 | let is_slist_matcher pl = | |
317 | match Ast0.unwrap pl with Ast0.MetaStmtList(_,_) -> true | _ -> false in | |
318 | ||
319 | let no_list _ = false in | |
320 | ||
321 | let build_dots pattern data = | |
322 | match Ast0.unwrap pattern with | |
323 | Ast0.DOTS(_) -> Ast0.rewrap pattern (Ast0.DOTS(data)) | |
324 | | Ast0.CIRCLES(_) -> Ast0.rewrap pattern (Ast0.CIRCLES(data)) | |
325 | | Ast0.STARS(_) -> Ast0.rewrap pattern (Ast0.STARS(data)) in | |
326 | ||
327 | let pure_sp_code = | |
328 | let bind = Ast0.lub_pure in | |
329 | let option_default = Ast0.Context in | |
485bce71 C |
330 | let pure_mcodekind mc = |
331 | if !Flag.sgrep_mode2 | |
332 | then Ast0.PureContext | |
333 | else | |
334 | match mc with | |
335 | Ast0.CONTEXT(mc) -> | |
336 | (match !mc with | |
337 | (Ast.NOTHING,_,_) -> Ast0.PureContext | |
338 | | _ -> Ast0.Context) | |
339 | | Ast0.MINUS(mc) -> | |
340 | (match !mc with ([],_) -> Ast0.Pure | _ -> Ast0.Impure) | |
341 | | _ -> Ast0.Impure in | |
34e49164 C |
342 | let donothing r k e = |
343 | bind (pure_mcodekind (Ast0.get_mcodekind e)) (k e) in | |
344 | ||
345 | let mcode m = pure_mcodekind (Ast0.get_mcode_mcodekind m) in | |
346 | ||
347 | (* a case for everything that has a metavariable *) | |
348 | (* pure is supposed to match only unitary metavars, not anything that | |
349 | contains only unitary metavars *) | |
350 | let ident r k i = | |
351 | bind (bind (pure_mcodekind (Ast0.get_mcodekind i)) (k i)) | |
352 | (match Ast0.unwrap i with | |
353 | Ast0.MetaId(name,_,pure) | Ast0.MetaFunc(name,_,pure) | |
354 | | Ast0.MetaLocalFunc(name,_,pure) -> pure | |
355 | | _ -> Ast0.Impure) in | |
356 | ||
357 | let expression r k e = | |
358 | bind (bind (pure_mcodekind (Ast0.get_mcodekind e)) (k e)) | |
359 | (match Ast0.unwrap e with | |
360 | Ast0.MetaErr(name,_,pure) | |
361 | | Ast0.MetaExpr(name,_,_,_,pure) | Ast0.MetaExprList(name,_,pure) -> | |
362 | pure | |
363 | | _ -> Ast0.Impure) in | |
364 | ||
365 | let typeC r k t = | |
366 | bind (bind (pure_mcodekind (Ast0.get_mcodekind t)) (k t)) | |
367 | (match Ast0.unwrap t with | |
368 | Ast0.MetaType(name,pure) -> pure | |
369 | | _ -> Ast0.Impure) in | |
370 | ||
113803cf C |
371 | let init r k t = |
372 | bind (bind (pure_mcodekind (Ast0.get_mcodekind t)) (k t)) | |
373 | (match Ast0.unwrap t with | |
374 | Ast0.MetaInit(name,pure) -> pure | |
375 | | _ -> Ast0.Impure) in | |
376 | ||
34e49164 C |
377 | let param r k p = |
378 | bind (bind (pure_mcodekind (Ast0.get_mcodekind p)) (k p)) | |
379 | (match Ast0.unwrap p with | |
380 | Ast0.MetaParam(name,pure) | Ast0.MetaParamList(name,_,pure) -> pure | |
381 | | _ -> Ast0.Impure) in | |
382 | ||
383 | let stmt r k s = | |
384 | bind (bind (pure_mcodekind (Ast0.get_mcodekind s)) (k s)) | |
385 | (match Ast0.unwrap s with | |
386 | Ast0.MetaStmt(name,pure) | Ast0.MetaStmtList(name,pure) -> pure | |
387 | | _ -> Ast0.Impure) in | |
388 | ||
b1b2de81 | 389 | V0.flat_combiner bind option_default |
34e49164 | 390 | mcode mcode mcode mcode mcode mcode mcode mcode mcode mcode mcode mcode |
34e49164 | 391 | donothing donothing donothing donothing donothing donothing |
113803cf | 392 | ident expression typeC init param donothing stmt donothing |
34e49164 C |
393 | donothing in |
394 | ||
395 | let add_pure_list_binding name pure is_pure builder1 builder2 lst = | |
396 | match (checks_needed,pure) with | |
397 | (true,Ast0.Pure) | (true,Ast0.Context) | (true,Ast0.PureContext) -> | |
398 | (match lst with | |
399 | [x] -> | |
400 | if (Ast0.lub_pure (is_pure x) pure) = pure | |
401 | then add_binding name (builder1 lst) | |
402 | else return_false (NotPure (pure,term name,builder1 lst)) | |
403 | | _ -> return_false (NotPureLength (term name))) | |
404 | | (false,_) | (_,Ast0.Impure) -> add_binding name (builder2 lst) in | |
405 | ||
406 | let add_pure_binding name pure is_pure builder x = | |
407 | match (checks_needed,pure) with | |
408 | (true,Ast0.Pure) | (true,Ast0.Context) | (true,Ast0.PureContext) -> | |
409 | if (Ast0.lub_pure (is_pure x) pure) = pure | |
410 | then add_binding name (builder x) | |
411 | else return_false (NotPure (pure,term name, builder x)) | |
412 | | (false,_) | (_,Ast0.Impure) -> add_binding name (builder x) in | |
413 | ||
414 | let do_elist_match builder el lst = | |
415 | match Ast0.unwrap el with | |
416 | Ast0.MetaExprList(name,lenname,pure) -> | |
417 | (*how to handle lenname? should it be an option type and always None?*) | |
418 | failwith "expr list pattern not supported in iso" | |
419 | (*add_pure_list_binding name pure | |
420 | pure_sp_code.V0.combiner_expression | |
421 | (function lst -> Ast0.ExprTag(List.hd lst)) | |
422 | (function lst -> Ast0.DotsExprTag(build_dots builder lst)) | |
423 | lst*) | |
424 | | _ -> failwith "not possible" in | |
425 | ||
426 | let do_plist_match builder pl lst = | |
427 | match Ast0.unwrap pl with | |
428 | Ast0.MetaParamList(name,lename,pure) -> | |
429 | failwith "param list pattern not supported in iso" | |
430 | (*add_pure_list_binding name pure | |
431 | pure_sp_code.V0.combiner_parameter | |
432 | (function lst -> Ast0.ParamTag(List.hd lst)) | |
433 | (function lst -> Ast0.DotsParamTag(build_dots builder lst)) | |
434 | lst*) | |
435 | | _ -> failwith "not possible" in | |
436 | ||
437 | let do_slist_match builder sl lst = | |
438 | match Ast0.unwrap sl with | |
439 | Ast0.MetaStmtList(name,pure) -> | |
440 | add_pure_list_binding name pure | |
b1b2de81 | 441 | pure_sp_code.VT0.combiner_rec_statement |
34e49164 C |
442 | (function lst -> Ast0.StmtTag(List.hd lst)) |
443 | (function lst -> Ast0.DotsStmtTag(build_dots builder lst)) | |
444 | lst | |
445 | | _ -> failwith "not possible" in | |
446 | ||
447 | let do_nolist_match _ _ = failwith "not possible" in | |
448 | ||
449 | let rec match_ident pattern id = | |
450 | match Ast0.unwrap pattern with | |
451 | Ast0.MetaId(name,_,pure) -> | |
b1b2de81 | 452 | (add_pure_binding name pure pure_sp_code.VT0.combiner_rec_ident |
34e49164 C |
453 | (function id -> Ast0.IdentTag id) id) |
454 | | Ast0.MetaFunc(name,_,pure) -> failwith "metafunc not supported" | |
455 | | Ast0.MetaLocalFunc(name,_,pure) -> failwith "metalocalfunc not supported" | |
456 | | up -> | |
457 | if not(checks_needed) or not(context_required) or is_context id | |
458 | then | |
459 | match (up,Ast0.unwrap id) with | |
460 | (Ast0.Id(namea),Ast0.Id(nameb)) -> | |
461 | if mcode_equal namea nameb | |
462 | then check_mcode namea nameb | |
463 | else return false | |
464 | | (Ast0.OptIdent(ida),Ast0.OptIdent(idb)) | |
465 | | (Ast0.UniqueIdent(ida),Ast0.UniqueIdent(idb)) -> | |
466 | match_ident ida idb | |
467 | | (_,Ast0.OptIdent(idb)) | |
468 | | (_,Ast0.UniqueIdent(idb)) -> match_ident pattern idb | |
469 | | _ -> return false | |
470 | else return_false (ContextRequired (Ast0.IdentTag id)) in | |
471 | ||
472 | (* should we do something about matching metavars against ...? *) | |
473 | let rec match_expr pattern expr = | |
474 | match Ast0.unwrap pattern with | |
475 | Ast0.MetaExpr(name,_,ty,form,pure) -> | |
476 | let form_ok = | |
477 | match (form,expr) with | |
478 | (Ast.ANY,_) -> true | |
479 | | (Ast.CONST,e) -> | |
480 | let rec matches e = | |
481 | match Ast0.unwrap e with | |
482 | Ast0.Constant(c) -> true | |
483 | | Ast0.Cast(lp,ty,rp,e) -> matches e | |
484 | | Ast0.SizeOfExpr(se,exp) -> true | |
485 | | Ast0.SizeOfType(se,lp,ty,rp) -> true | |
486 | | Ast0.MetaExpr(nm,_,_,Ast.CONST,p) -> | |
487 | (Ast0.lub_pure p pure) = pure | |
488 | | _ -> false in | |
489 | matches e | |
490 | | (Ast.ID,e) | (Ast.LocalID,e) -> | |
491 | let rec matches e = | |
492 | match Ast0.unwrap e with | |
493 | Ast0.Ident(c) -> true | |
494 | | Ast0.Cast(lp,ty,rp,e) -> matches e | |
495 | | Ast0.MetaExpr(nm,_,_,Ast.ID,p) -> | |
496 | (Ast0.lub_pure p pure) = pure | |
497 | | _ -> false in | |
498 | matches e in | |
499 | if form_ok | |
500 | then | |
501 | match ty with | |
502 | Some ts -> | |
503 | if List.exists | |
504 | (function Type_cocci.MetaType(_,_,_) -> true | _ -> false) | |
505 | ts | |
506 | then | |
507 | (match ts with | |
508 | [Type_cocci.MetaType(tyname,_,_)] -> | |
509 | let expty = | |
510 | match (Ast0.unwrap expr,Ast0.get_type expr) with | |
511 | (* easier than updating type inferencer to manage multiple | |
512 | types *) | |
513 | (Ast0.MetaExpr(_,_,Some tts,_,_),_) -> Some tts | |
514 | | (_,Some ty) -> Some [ty] | |
515 | | _ -> None in | |
516 | (match expty with | |
517 | Some expty -> | |
518 | let tyname = Ast0.rewrap_mcode name tyname in | |
485bce71 C |
519 | conjunct_bindings |
520 | (add_pure_binding name pure | |
b1b2de81 | 521 | pure_sp_code.VT0.combiner_rec_expression |
485bce71 C |
522 | (function expr -> Ast0.ExprTag expr) |
523 | expr) | |
524 | (function bindings -> | |
525 | let attempts = | |
526 | List.map | |
527 | (function expty -> | |
528 | (try | |
529 | add_pure_binding tyname Ast0.Impure | |
530 | (function _ -> Ast0.Impure) | |
531 | (function ty -> Ast0.TypeCTag ty) | |
532 | (Ast0.rewrap expr | |
533 | (Ast0.reverse_type expty)) | |
534 | bindings | |
535 | with Ast0.TyConv -> | |
536 | Printf.printf | |
537 | "warning: unconvertible type"; | |
538 | return false bindings)) | |
539 | expty in | |
540 | if List.exists | |
541 | (function Fail _ -> false | OK x -> true) | |
542 | attempts | |
543 | then | |
544 | (* not sure why this is ok. can there be more | |
545 | than one OK? *) | |
546 | OK (List.concat | |
547 | (List.map | |
548 | (function Fail _ -> [] | OK x -> x) | |
549 | attempts)) | |
550 | else | |
551 | Fail | |
552 | (TypeMatch | |
553 | (List.map | |
554 | (function | |
555 | Fail r -> r | |
556 | | OK x -> failwith "not possible") | |
557 | attempts))) | |
558 | | _ -> | |
34e49164 C |
559 | (*Printf.printf |
560 | "warning: type metavar can only match one type";*) | |
561 | return false) | |
562 | | _ -> | |
563 | failwith | |
564 | "mixture of metatype and other types not supported") | |
565 | else | |
566 | let expty = Ast0.get_type expr in | |
567 | if List.exists (function t -> Type_cocci.compatible t expty) ts | |
568 | then | |
569 | add_pure_binding name pure | |
b1b2de81 | 570 | pure_sp_code.VT0.combiner_rec_expression |
34e49164 C |
571 | (function expr -> Ast0.ExprTag expr) |
572 | expr | |
573 | else return false | |
574 | | None -> | |
fc1ad971 C |
575 | add_pure_binding name pure |
576 | pure_sp_code.VT0.combiner_rec_expression | |
34e49164 C |
577 | (function expr -> Ast0.ExprTag expr) |
578 | expr | |
579 | else return false | |
580 | | Ast0.MetaErr(namea,_,pure) -> failwith "metaerr not supported" | |
581 | | Ast0.MetaExprList(_,_,_) -> failwith "metaexprlist not supported" | |
582 | | up -> | |
583 | if not(checks_needed) or not(context_required) or is_context expr | |
584 | then | |
585 | match (up,Ast0.unwrap expr) with | |
586 | (Ast0.Ident(ida),Ast0.Ident(idb)) -> | |
587 | match_ident ida idb | |
588 | | (Ast0.Constant(consta),Ast0.Constant(constb)) -> | |
589 | if mcode_equal consta constb | |
590 | then check_mcode consta constb | |
591 | else return false | |
592 | | (Ast0.FunCall(fna,lp1,argsa,rp1),Ast0.FunCall(fnb,lp,argsb,rp)) -> | |
593 | conjunct_many_bindings | |
594 | [check_mcode lp1 lp; check_mcode rp1 rp; match_expr fna fnb; | |
595 | match_dots match_expr is_elist_matcher do_elist_match | |
596 | argsa argsb] | |
597 | | (Ast0.Assignment(lefta,opa,righta,_), | |
598 | Ast0.Assignment(leftb,opb,rightb,_)) -> | |
599 | if mcode_equal opa opb | |
600 | then | |
601 | conjunct_many_bindings | |
602 | [check_mcode opa opb; match_expr lefta leftb; | |
603 | match_expr righta rightb] | |
604 | else return false | |
605 | | (Ast0.CondExpr(exp1a,lp1,exp2a,rp1,exp3a), | |
606 | Ast0.CondExpr(exp1b,lp,exp2b,rp,exp3b)) -> | |
607 | conjunct_many_bindings | |
608 | [check_mcode lp1 lp; check_mcode rp1 rp; | |
609 | match_expr exp1a exp1b; match_option match_expr exp2a exp2b; | |
610 | match_expr exp3a exp3b] | |
611 | | (Ast0.Postfix(expa,opa),Ast0.Postfix(expb,opb)) -> | |
612 | if mcode_equal opa opb | |
613 | then | |
614 | conjunct_bindings (check_mcode opa opb) (match_expr expa expb) | |
615 | else return false | |
616 | | (Ast0.Infix(expa,opa),Ast0.Infix(expb,opb)) -> | |
617 | if mcode_equal opa opb | |
618 | then | |
619 | conjunct_bindings (check_mcode opa opb) (match_expr expa expb) | |
620 | else return false | |
621 | | (Ast0.Unary(expa,opa),Ast0.Unary(expb,opb)) -> | |
622 | if mcode_equal opa opb | |
623 | then | |
624 | conjunct_bindings (check_mcode opa opb) (match_expr expa expb) | |
625 | else return false | |
626 | | (Ast0.Binary(lefta,opa,righta),Ast0.Binary(leftb,opb,rightb)) -> | |
627 | if mcode_equal opa opb | |
628 | then | |
629 | conjunct_many_bindings | |
630 | [check_mcode opa opb; match_expr lefta leftb; | |
631 | match_expr righta rightb] | |
632 | else return false | |
633 | | (Ast0.Paren(lp1,expa,rp1),Ast0.Paren(lp,expb,rp)) -> | |
634 | conjunct_many_bindings | |
635 | [check_mcode lp1 lp; check_mcode rp1 rp; match_expr expa expb] | |
636 | | (Ast0.ArrayAccess(exp1a,lb1,exp2a,rb1), | |
637 | Ast0.ArrayAccess(exp1b,lb,exp2b,rb)) -> | |
638 | conjunct_many_bindings | |
639 | [check_mcode lb1 lb; check_mcode rb1 rb; | |
640 | match_expr exp1a exp1b; match_expr exp2a exp2b] | |
641 | | (Ast0.RecordAccess(expa,opa,fielda), | |
642 | Ast0.RecordAccess(expb,op,fieldb)) | |
643 | | (Ast0.RecordPtAccess(expa,opa,fielda), | |
644 | Ast0.RecordPtAccess(expb,op,fieldb)) -> | |
645 | conjunct_many_bindings | |
646 | [check_mcode opa op; match_expr expa expb; | |
647 | match_ident fielda fieldb] | |
648 | | (Ast0.Cast(lp1,tya,rp1,expa),Ast0.Cast(lp,tyb,rp,expb)) -> | |
649 | conjunct_many_bindings | |
650 | [check_mcode lp1 lp; check_mcode rp1 rp; | |
651 | match_typeC tya tyb; match_expr expa expb] | |
652 | | (Ast0.SizeOfExpr(szf1,expa),Ast0.SizeOfExpr(szf,expb)) -> | |
653 | conjunct_bindings (check_mcode szf1 szf) (match_expr expa expb) | |
654 | | (Ast0.SizeOfType(szf1,lp1,tya,rp1), | |
655 | Ast0.SizeOfType(szf,lp,tyb,rp)) -> | |
656 | conjunct_many_bindings | |
657 | [check_mcode lp1 lp; check_mcode rp1 rp; | |
658 | check_mcode szf1 szf; match_typeC tya tyb] | |
659 | | (Ast0.TypeExp(tya),Ast0.TypeExp(tyb)) -> | |
660 | match_typeC tya tyb | |
661 | | (Ast0.EComma(cm1),Ast0.EComma(cm)) -> check_mcode cm1 cm | |
662 | | (Ast0.DisjExpr(_,expsa,_,_),_) -> | |
663 | failwith "not allowed in the pattern of an isomorphism" | |
664 | | (Ast0.NestExpr(_,exp_dotsa,_,_,_),_) -> | |
665 | failwith "not allowed in the pattern of an isomorphism" | |
666 | | (Ast0.Edots(d,None),Ast0.Edots(d1,None)) | |
667 | | (Ast0.Ecircles(d,None),Ast0.Ecircles(d1,None)) | |
668 | | (Ast0.Estars(d,None),Ast0.Estars(d1,None)) -> check_mcode d d1 | |
669 | | (Ast0.Edots(ed,None),Ast0.Edots(ed1,Some wc)) | |
670 | | (Ast0.Ecircles(ed,None),Ast0.Ecircles(ed1,Some wc)) | |
671 | | (Ast0.Estars(ed,None),Ast0.Estars(ed1,Some wc)) -> | |
672 | (* hope that mcode of edots is unique somehow *) | |
673 | conjunct_bindings (check_mcode ed ed1) | |
674 | (let (edots_whencode_allowed,_,_) = whencode_allowed in | |
675 | if edots_whencode_allowed | |
676 | then add_dot_binding ed (Ast0.ExprTag wc) | |
677 | else | |
678 | (Printf.printf | |
679 | "warning: not applying iso because of whencode"; | |
680 | return false)) | |
681 | | (Ast0.Edots(_,Some _),_) | (Ast0.Ecircles(_,Some _),_) | |
682 | | (Ast0.Estars(_,Some _),_) -> | |
683 | failwith "whencode not allowed in a pattern1" | |
684 | | (Ast0.OptExp(expa),Ast0.OptExp(expb)) | |
685 | | (Ast0.UniqueExp(expa),Ast0.UniqueExp(expb)) -> match_expr expa expb | |
686 | | (_,Ast0.OptExp(expb)) | |
687 | | (_,Ast0.UniqueExp(expb)) -> match_expr pattern expb | |
688 | | _ -> return false | |
689 | else return_false (ContextRequired (Ast0.ExprTag expr)) | |
faf9a90c | 690 | |
34e49164 C |
691 | (* the special case for function types prevents the eg T X; -> T X = E; iso |
692 | from applying, which doesn't seem very relevant, but it also avoids a | |
693 | mysterious bug that is obtained with eg int attach(...); *) | |
694 | and match_typeC pattern t = | |
695 | match Ast0.unwrap pattern with | |
696 | Ast0.MetaType(name,pure) -> | |
697 | (match Ast0.unwrap t with | |
698 | Ast0.FunctionType(tya,lp1a,paramsa,rp1a) -> return false | |
699 | | _ -> | |
b1b2de81 | 700 | add_pure_binding name pure pure_sp_code.VT0.combiner_rec_typeC |
34e49164 C |
701 | (function ty -> Ast0.TypeCTag ty) |
702 | t) | |
703 | | up -> | |
704 | if not(checks_needed) or not(context_required) or is_context t | |
705 | then | |
706 | match (up,Ast0.unwrap t) with | |
707 | (Ast0.ConstVol(cva,tya),Ast0.ConstVol(cvb,tyb)) -> | |
708 | if mcode_equal cva cvb | |
709 | then | |
710 | conjunct_bindings (check_mcode cva cvb) (match_typeC tya tyb) | |
711 | else return false | |
faf9a90c C |
712 | | (Ast0.BaseType(tya,stringsa),Ast0.BaseType(tyb,stringsb)) -> |
713 | if tya = tyb | |
34e49164 | 714 | then |
faf9a90c C |
715 | match_list check_mcode |
716 | (function _ -> false) (function _ -> failwith "") | |
717 | stringsa stringsb | |
34e49164 | 718 | else return false |
faf9a90c | 719 | | (Ast0.Signed(signa,tya),Ast0.Signed(signb,tyb)) -> |
34e49164 | 720 | if mcode_equal signa signb |
faf9a90c C |
721 | then |
722 | conjunct_bindings (check_mcode signa signb) | |
723 | (match_option match_typeC tya tyb) | |
34e49164 C |
724 | else return false |
725 | | (Ast0.Pointer(tya,star1),Ast0.Pointer(tyb,star)) -> | |
726 | conjunct_bindings (check_mcode star1 star) (match_typeC tya tyb) | |
727 | | (Ast0.FunctionPointer(tya,lp1a,stara,rp1a,lp2a,paramsa,rp2a), | |
728 | Ast0.FunctionPointer(tyb,lp1b,starb,rp1b,lp2b,paramsb,rp2b)) -> | |
729 | conjunct_many_bindings | |
730 | [check_mcode stara starb; check_mcode lp1a lp1b; | |
731 | check_mcode rp1a rp1b; check_mcode lp2a lp2b; | |
732 | check_mcode rp2a rp2b; match_typeC tya tyb; | |
733 | match_dots match_param is_plist_matcher | |
734 | do_plist_match paramsa paramsb] | |
735 | | (Ast0.FunctionType(tya,lp1a,paramsa,rp1a), | |
736 | Ast0.FunctionType(tyb,lp1b,paramsb,rp1b)) -> | |
737 | conjunct_many_bindings | |
738 | [check_mcode lp1a lp1b; check_mcode rp1a rp1b; | |
739 | match_option match_typeC tya tyb; | |
740 | match_dots match_param is_plist_matcher do_plist_match | |
741 | paramsa paramsb] | |
742 | | (Ast0.Array(tya,lb1,sizea,rb1),Ast0.Array(tyb,lb,sizeb,rb)) -> | |
743 | conjunct_many_bindings | |
744 | [check_mcode lb1 lb; check_mcode rb1 rb; | |
745 | match_typeC tya tyb; match_option match_expr sizea sizeb] | |
faf9a90c C |
746 | | (Ast0.EnumName(kinda,namea),Ast0.EnumName(kindb,nameb)) -> |
747 | conjunct_bindings (check_mcode kinda kindb) | |
748 | (match_ident namea nameb) | |
34e49164 C |
749 | | (Ast0.StructUnionName(kinda,Some namea), |
750 | Ast0.StructUnionName(kindb,Some nameb)) -> | |
751 | if mcode_equal kinda kindb | |
752 | then | |
753 | conjunct_bindings (check_mcode kinda kindb) | |
754 | (match_ident namea nameb) | |
755 | else return false | |
756 | | (Ast0.StructUnionDef(tya,lb1,declsa,rb1), | |
757 | Ast0.StructUnionDef(tyb,lb,declsb,rb)) -> | |
758 | conjunct_many_bindings | |
759 | [check_mcode lb1 lb; check_mcode rb1 rb; | |
760 | match_typeC tya tyb; | |
761 | match_dots match_decl no_list do_nolist_match declsa declsb] | |
762 | | (Ast0.TypeName(namea),Ast0.TypeName(nameb)) -> | |
763 | if mcode_equal namea nameb | |
764 | then check_mcode namea nameb | |
765 | else return false | |
766 | | (Ast0.DisjType(_,typesa,_,_),Ast0.DisjType(_,typesb,_,_)) -> | |
767 | failwith "not allowed in the pattern of an isomorphism" | |
768 | | (Ast0.OptType(tya),Ast0.OptType(tyb)) | |
769 | | (Ast0.UniqueType(tya),Ast0.UniqueType(tyb)) -> match_typeC tya tyb | |
770 | | (_,Ast0.OptType(tyb)) | |
771 | | (_,Ast0.UniqueType(tyb)) -> match_typeC pattern tyb | |
772 | | _ -> return false | |
773 | else return_false (ContextRequired (Ast0.TypeCTag t)) | |
faf9a90c | 774 | |
34e49164 C |
775 | and match_decl pattern d = |
776 | if not(checks_needed) or not(context_required) or is_context d | |
777 | then | |
778 | match (Ast0.unwrap pattern,Ast0.unwrap d) with | |
779 | (Ast0.Init(stga,tya,ida,eq1,inia,sc1), | |
780 | Ast0.Init(stgb,tyb,idb,eq,inib,sc)) -> | |
781 | if bool_match_option mcode_equal stga stgb | |
782 | then | |
783 | conjunct_many_bindings | |
784 | [check_mcode eq1 eq; check_mcode sc1 sc; | |
785 | match_option check_mcode stga stgb; | |
786 | match_typeC tya tyb; match_ident ida idb; | |
787 | match_init inia inib] | |
788 | else return false | |
789 | | (Ast0.UnInit(stga,tya,ida,sc1),Ast0.UnInit(stgb,tyb,idb,sc)) -> | |
790 | if bool_match_option mcode_equal stga stgb | |
791 | then | |
792 | conjunct_many_bindings | |
793 | [check_mcode sc1 sc; match_option check_mcode stga stgb; | |
794 | match_typeC tya tyb; match_ident ida idb] | |
795 | else return false | |
796 | | (Ast0.MacroDecl(namea,lp1,argsa,rp1,sc1), | |
797 | Ast0.MacroDecl(nameb,lp,argsb,rp,sc)) -> | |
798 | conjunct_many_bindings | |
799 | [match_ident namea nameb; | |
800 | check_mcode lp1 lp; check_mcode rp1 rp; | |
801 | check_mcode sc1 sc; | |
802 | match_dots match_expr is_elist_matcher do_elist_match | |
803 | argsa argsb] | |
804 | | (Ast0.TyDecl(tya,sc1),Ast0.TyDecl(tyb,sc)) -> | |
805 | conjunct_bindings (check_mcode sc1 sc) (match_typeC tya tyb) | |
806 | | (Ast0.Typedef(stga,tya,ida,sc1),Ast0.Typedef(stgb,tyb,idb,sc)) -> | |
807 | conjunct_bindings (check_mcode sc1 sc) | |
808 | (conjunct_bindings (match_typeC tya tyb) (match_typeC ida idb)) | |
809 | | (Ast0.DisjDecl(_,declsa,_,_),Ast0.DisjDecl(_,declsb,_,_)) -> | |
810 | failwith "not allowed in the pattern of an isomorphism" | |
811 | | (Ast0.Ddots(d1,None),Ast0.Ddots(d,None)) -> check_mcode d1 d | |
812 | | (Ast0.Ddots(dd,None),Ast0.Ddots(d,Some wc)) -> | |
813 | conjunct_bindings (check_mcode dd d) | |
814 | (* hope that mcode of ddots is unique somehow *) | |
815 | (let (ddots_whencode_allowed,_,_) = whencode_allowed in | |
816 | if ddots_whencode_allowed | |
817 | then add_dot_binding dd (Ast0.DeclTag wc) | |
818 | else | |
819 | (Printf.printf "warning: not applying iso because of whencode"; | |
820 | return false)) | |
821 | | (Ast0.Ddots(_,Some _),_) -> | |
822 | failwith "whencode not allowed in a pattern1" | |
faf9a90c | 823 | |
34e49164 C |
824 | | (Ast0.OptDecl(decla),Ast0.OptDecl(declb)) |
825 | | (Ast0.UniqueDecl(decla),Ast0.UniqueDecl(declb)) -> | |
826 | match_decl decla declb | |
827 | | (_,Ast0.OptDecl(declb)) | |
828 | | (_,Ast0.UniqueDecl(declb)) -> | |
829 | match_decl pattern declb | |
830 | | _ -> return false | |
831 | else return_false (ContextRequired (Ast0.DeclTag d)) | |
faf9a90c | 832 | |
34e49164 | 833 | and match_init pattern i = |
113803cf C |
834 | match Ast0.unwrap pattern with |
835 | Ast0.MetaInit(name,pure) -> | |
b1b2de81 | 836 | add_pure_binding name pure pure_sp_code.VT0.combiner_rec_initialiser |
113803cf C |
837 | (function ini -> Ast0.InitTag ini) |
838 | i | |
839 | | up -> | |
840 | if not(checks_needed) or not(context_required) or is_context i | |
841 | then | |
842 | match (up,Ast0.unwrap i) with | |
843 | (Ast0.InitExpr(expa),Ast0.InitExpr(expb)) -> | |
844 | match_expr expa expb | |
845 | | (Ast0.InitList(lb1,initlista,rb1),Ast0.InitList(lb,initlistb,rb)) | |
846 | -> | |
847 | conjunct_many_bindings | |
848 | [check_mcode lb1 lb; check_mcode rb1 rb; | |
849 | match_dots match_init no_list do_nolist_match | |
850 | initlista initlistb] | |
851 | | (Ast0.InitGccExt(designators1,e1,inia), | |
852 | Ast0.InitGccExt(designators2,e2,inib)) -> | |
853 | conjunct_many_bindings | |
854 | [match_list match_designator | |
855 | (function _ -> false) (function _ -> failwith "") | |
856 | designators1 designators2; | |
857 | check_mcode e1 e2; | |
858 | match_init inia inib] | |
859 | | (Ast0.InitGccName(namea,c1,inia),Ast0.InitGccName(nameb,c,inib)) -> | |
860 | conjunct_many_bindings | |
861 | [check_mcode c1 c; match_ident namea nameb; | |
862 | match_init inia inib] | |
863 | | (Ast0.IComma(c1),Ast0.IComma(c)) -> check_mcode c1 c | |
864 | | (Ast0.Idots(d1,None),Ast0.Idots(d,None)) -> check_mcode d1 d | |
865 | | (Ast0.Idots(id,None),Ast0.Idots(d,Some wc)) -> | |
866 | conjunct_bindings (check_mcode id d) | |
34e49164 | 867 | (* hope that mcode of edots is unique somehow *) |
113803cf C |
868 | (let (_,idots_whencode_allowed,_) = whencode_allowed in |
869 | if idots_whencode_allowed | |
870 | then add_dot_binding id (Ast0.InitTag wc) | |
871 | else | |
872 | (Printf.printf | |
873 | "warning: not applying iso because of whencode"; | |
874 | return false)) | |
875 | | (Ast0.Idots(_,Some _),_) -> | |
876 | failwith "whencode not allowed in a pattern2" | |
877 | | (Ast0.OptIni(ia),Ast0.OptIni(ib)) | |
878 | | (Ast0.UniqueIni(ia),Ast0.UniqueIni(ib)) -> match_init ia ib | |
879 | | (_,Ast0.OptIni(ib)) | |
880 | | (_,Ast0.UniqueIni(ib)) -> match_init pattern ib | |
881 | | _ -> return false | |
882 | else return_false (ContextRequired (Ast0.InitTag i)) | |
883 | ||
884 | and match_designator pattern d = | |
885 | match (pattern,d) with | |
886 | (Ast0.DesignatorField(dota,ida),Ast0.DesignatorField(dotb,idb)) -> | |
887 | conjunct_bindings (check_mcode dota dotb) (match_ident ida idb) | |
888 | | (Ast0.DesignatorIndex(lba,expa,rba), | |
889 | Ast0.DesignatorIndex(lbb,expb,rbb)) -> | |
890 | conjunct_many_bindings | |
891 | [check_mcode lba lbb; match_expr expa expb; | |
892 | check_mcode rba rbb] | |
893 | | (Ast0.DesignatorRange(lba,mina,dotsa,maxa,rba), | |
894 | Ast0.DesignatorRange(lbb,minb,dotsb,maxb,rbb)) -> | |
895 | conjunct_many_bindings | |
896 | [check_mcode lba lbb; match_expr mina minb; | |
897 | check_mcode dotsa dotsb; match_expr maxa maxb; | |
898 | check_mcode rba rbb] | |
899 | | _ -> return false | |
faf9a90c | 900 | |
34e49164 C |
901 | and match_param pattern p = |
902 | match Ast0.unwrap pattern with | |
903 | Ast0.MetaParam(name,pure) -> | |
b1b2de81 | 904 | add_pure_binding name pure pure_sp_code.VT0.combiner_rec_parameter |
34e49164 C |
905 | (function p -> Ast0.ParamTag p) |
906 | p | |
907 | | Ast0.MetaParamList(name,_,pure) -> failwith "metaparamlist not supported" | |
908 | | up -> | |
909 | if not(checks_needed) or not(context_required) or is_context p | |
910 | then | |
911 | match (up,Ast0.unwrap p) with | |
912 | (Ast0.VoidParam(tya),Ast0.VoidParam(tyb)) -> match_typeC tya tyb | |
913 | | (Ast0.Param(tya,ida),Ast0.Param(tyb,idb)) -> | |
914 | conjunct_bindings (match_typeC tya tyb) | |
915 | (match_option match_ident ida idb) | |
916 | | (Ast0.PComma(c1),Ast0.PComma(c)) -> check_mcode c1 c | |
917 | | (Ast0.Pdots(d1),Ast0.Pdots(d)) | |
918 | | (Ast0.Pcircles(d1),Ast0.Pcircles(d)) -> check_mcode d1 d | |
919 | | (Ast0.OptParam(parama),Ast0.OptParam(paramb)) | |
920 | | (Ast0.UniqueParam(parama),Ast0.UniqueParam(paramb)) -> | |
921 | match_param parama paramb | |
922 | | (_,Ast0.OptParam(paramb)) | |
923 | | (_,Ast0.UniqueParam(paramb)) -> match_param pattern paramb | |
924 | | _ -> return false | |
925 | else return_false (ContextRequired (Ast0.ParamTag p)) | |
faf9a90c | 926 | |
34e49164 C |
927 | and match_statement pattern s = |
928 | match Ast0.unwrap pattern with | |
929 | Ast0.MetaStmt(name,pure) -> | |
930 | (match Ast0.unwrap s with | |
931 | Ast0.Dots(_,_) | Ast0.Circles(_,_) | Ast0.Stars(_,_) -> | |
932 | return false (* ... is not a single statement *) | |
933 | | _ -> | |
b1b2de81 | 934 | add_pure_binding name pure pure_sp_code.VT0.combiner_rec_statement |
34e49164 C |
935 | (function ty -> Ast0.StmtTag ty) |
936 | s) | |
937 | | Ast0.MetaStmtList(name,pure) -> failwith "metastmtlist not supported" | |
938 | | up -> | |
939 | if not(checks_needed) or not(context_required) or is_context s | |
940 | then | |
941 | match (up,Ast0.unwrap s) with | |
942 | (Ast0.FunDecl(_,fninfoa,namea,lp1,paramsa,rp1,lb1,bodya,rb1), | |
943 | Ast0.FunDecl(_,fninfob,nameb,lp,paramsb,rp,lb,bodyb,rb)) -> | |
944 | conjunct_many_bindings | |
945 | [check_mcode lp1 lp; check_mcode rp1 rp; | |
946 | check_mcode lb1 lb; check_mcode rb1 rb; | |
947 | match_fninfo fninfoa fninfob; match_ident namea nameb; | |
948 | match_dots match_param is_plist_matcher do_plist_match | |
949 | paramsa paramsb; | |
950 | match_dots match_statement is_slist_matcher do_slist_match | |
951 | bodya bodyb] | |
952 | | (Ast0.Decl(_,decla),Ast0.Decl(_,declb)) -> | |
953 | match_decl decla declb | |
954 | | (Ast0.Seq(lb1,bodya,rb1),Ast0.Seq(lb,bodyb,rb)) -> | |
955 | (* seqs can only match if they are all minus (plus code | |
956 | allowed) or all context (plus code not allowed in the body). | |
957 | we could be more permissive if the expansions of the isos are | |
958 | also all seqs, but this would be hard to check except at top | |
959 | level, and perhaps not worth checking even in that case. | |
960 | Overall, the issue is that braces are used where single | |
961 | statements are required, and something not satisfying these | |
962 | conditions can cause a single statement to become a | |
963 | non-single statement after the transformation. | |
964 | ||
965 | example: if { ... -foo(); ... } | |
966 | if we let the sequence convert to just -foo(); | |
967 | then we produce invalid code. For some reason, | |
968 | single_statement can't deal with this case, perhaps because | |
969 | it starts introducing too many braces? don't remember the | |
970 | exact problem... | |
971 | *) | |
972 | conjunct_bindings (check_mcode lb1 lb) | |
973 | (conjunct_bindings (check_mcode rb1 rb) | |
974 | (if not(checks_needed) or is_minus s or | |
975 | (is_context s && | |
976 | List.for_all is_pure_context (Ast0.undots bodyb)) | |
977 | then | |
978 | match_dots match_statement is_slist_matcher do_slist_match | |
979 | bodya bodyb | |
980 | else return_false (Braces(s)))) | |
981 | | (Ast0.ExprStatement(expa,sc1),Ast0.ExprStatement(expb,sc)) -> | |
982 | conjunct_bindings (check_mcode sc1 sc) (match_expr expa expb) | |
983 | | (Ast0.IfThen(if1,lp1,expa,rp1,branch1a,_), | |
984 | Ast0.IfThen(if2,lp2,expb,rp2,branch1b,_)) -> | |
985 | conjunct_many_bindings | |
986 | [check_mcode if1 if2; check_mcode lp1 lp2; | |
987 | check_mcode rp1 rp2; | |
988 | match_expr expa expb; | |
989 | match_statement branch1a branch1b] | |
990 | | (Ast0.IfThenElse(if1,lp1,expa,rp1,branch1a,e1,branch2a,_), | |
991 | Ast0.IfThenElse(if2,lp2,expb,rp2,branch1b,e2,branch2b,_)) -> | |
992 | conjunct_many_bindings | |
993 | [check_mcode if1 if2; check_mcode lp1 lp2; | |
994 | check_mcode rp1 rp2; check_mcode e1 e2; | |
995 | match_expr expa expb; | |
996 | match_statement branch1a branch1b; | |
997 | match_statement branch2a branch2b] | |
998 | | (Ast0.While(w1,lp1,expa,rp1,bodya,_), | |
999 | Ast0.While(w,lp,expb,rp,bodyb,_)) -> | |
1000 | conjunct_many_bindings | |
1001 | [check_mcode w1 w; check_mcode lp1 lp; | |
1002 | check_mcode rp1 rp; match_expr expa expb; | |
1003 | match_statement bodya bodyb] | |
1004 | | (Ast0.Do(d1,bodya,w1,lp1,expa,rp1,_), | |
1005 | Ast0.Do(d,bodyb,w,lp,expb,rp,_)) -> | |
1006 | conjunct_many_bindings | |
1007 | [check_mcode d1 d; check_mcode w1 w; check_mcode lp1 lp; | |
1008 | check_mcode rp1 rp; match_statement bodya bodyb; | |
1009 | match_expr expa expb] | |
1010 | | (Ast0.For(f1,lp1,e1a,sc1a,e2a,sc2a,e3a,rp1,bodya,_), | |
1011 | Ast0.For(f,lp,e1b,sc1b,e2b,sc2b,e3b,rp,bodyb,_)) -> | |
1012 | conjunct_many_bindings | |
1013 | [check_mcode f1 f; check_mcode lp1 lp; check_mcode sc1a sc1b; | |
1014 | check_mcode sc2a sc2b; check_mcode rp1 rp; | |
1015 | match_option match_expr e1a e1b; | |
1016 | match_option match_expr e2a e2b; | |
1017 | match_option match_expr e3a e3b; | |
1018 | match_statement bodya bodyb] | |
1019 | | (Ast0.Iterator(nma,lp1,argsa,rp1,bodya,_), | |
1020 | Ast0.Iterator(nmb,lp,argsb,rp,bodyb,_)) -> | |
1021 | conjunct_many_bindings | |
1022 | [match_ident nma nmb; | |
1023 | check_mcode lp1 lp; check_mcode rp1 rp; | |
1024 | match_dots match_expr is_elist_matcher do_elist_match | |
1025 | argsa argsb; | |
1026 | match_statement bodya bodyb] | |
fc1ad971 C |
1027 | | (Ast0.Switch(s1,lp1,expa,rp1,lb1,declsa,casesa,rb1), |
1028 | Ast0.Switch(s,lp,expb,rp,lb,declsb,casesb,rb)) -> | |
34e49164 C |
1029 | conjunct_many_bindings |
1030 | [check_mcode s1 s; check_mcode lp1 lp; check_mcode rp1 rp; | |
1031 | check_mcode lb1 lb; check_mcode rb1 rb; | |
1032 | match_expr expa expb; | |
fc1ad971 C |
1033 | match_dots match_statement is_slist_matcher do_slist_match |
1034 | declsa declsb; | |
34e49164 C |
1035 | match_dots match_case_line no_list do_nolist_match |
1036 | casesa casesb] | |
1037 | | (Ast0.Break(b1,sc1),Ast0.Break(b,sc)) | |
1038 | | (Ast0.Continue(b1,sc1),Ast0.Continue(b,sc)) -> | |
1039 | conjunct_bindings (check_mcode b1 b) (check_mcode sc1 sc) | |
1040 | | (Ast0.Label(l1,c1),Ast0.Label(l2,c)) -> | |
1041 | conjunct_bindings (match_ident l1 l2) (check_mcode c1 c) | |
1042 | | (Ast0.Goto(g1,l1,sc1),Ast0.Goto(g,l2,sc)) -> | |
1043 | conjunct_many_bindings | |
1044 | [check_mcode g1 g; check_mcode sc1 sc; match_ident l1 l2] | |
1045 | | (Ast0.Return(r1,sc1),Ast0.Return(r,sc)) -> | |
1046 | conjunct_bindings (check_mcode r1 r) (check_mcode sc1 sc) | |
1047 | | (Ast0.ReturnExpr(r1,expa,sc1),Ast0.ReturnExpr(r,expb,sc)) -> | |
1048 | conjunct_many_bindings | |
1049 | [check_mcode r1 r; check_mcode sc1 sc; match_expr expa expb] | |
1050 | | (Ast0.Disj(_,statement_dots_lista,_,_),_) -> | |
1051 | failwith "disj not supported in patterns" | |
1052 | | (Ast0.Nest(_,stmt_dotsa,_,_,_),_) -> | |
1053 | failwith "nest not supported in patterns" | |
1054 | | (Ast0.Exp(expa),Ast0.Exp(expb)) -> match_expr expa expb | |
1055 | | (Ast0.TopExp(expa),Ast0.TopExp(expb)) -> match_expr expa expb | |
1056 | | (Ast0.Exp(expa),Ast0.TopExp(expb)) -> match_expr expa expb | |
1be43e12 | 1057 | | (Ast0.TopInit(inita),Ast0.TopInit(initb)) -> match_init inita initb |
34e49164 C |
1058 | | (Ast0.Ty(tya),Ast0.Ty(tyb)) -> match_typeC tya tyb |
1059 | | (Ast0.Dots(d,[]),Ast0.Dots(d1,wc)) | |
1060 | | (Ast0.Circles(d,[]),Ast0.Circles(d1,wc)) | |
1061 | | (Ast0.Stars(d,[]),Ast0.Stars(d1,wc)) -> | |
1062 | (match wc with | |
1063 | [] -> check_mcode d d1 | |
1064 | | _ -> | |
1065 | let (_,_,dots_whencode_allowed) = whencode_allowed in | |
1066 | if dots_whencode_allowed | |
1067 | then | |
1068 | conjunct_bindings (check_mcode d d1) | |
1069 | (List.fold_left | |
1070 | (function prev -> | |
1071 | function | |
1072 | | Ast0.WhenNot wc -> | |
1073 | conjunct_bindings prev | |
1074 | (add_multi_dot_binding d | |
1075 | (Ast0.DotsStmtTag wc)) | |
1076 | | Ast0.WhenAlways wc -> | |
1077 | conjunct_bindings prev | |
1078 | (add_multi_dot_binding d (Ast0.StmtTag wc)) | |
1be43e12 C |
1079 | | Ast0.WhenNotTrue wc -> |
1080 | conjunct_bindings prev | |
1081 | (add_multi_dot_binding d | |
1082 | (Ast0.IsoWhenTTag wc)) | |
1083 | | Ast0.WhenNotFalse wc -> | |
1084 | conjunct_bindings prev | |
1085 | (add_multi_dot_binding d | |
1086 | (Ast0.IsoWhenFTag wc)) | |
34e49164 C |
1087 | | Ast0.WhenModifier(x) -> |
1088 | conjunct_bindings prev | |
1089 | (add_multi_dot_binding d | |
1090 | (Ast0.IsoWhenTag x))) | |
1091 | (return true) wc) | |
1092 | else | |
1093 | (Printf.printf | |
1094 | "warning: not applying iso because of whencode"; | |
1095 | return false)) | |
1096 | | (Ast0.Dots(_,_::_),_) | (Ast0.Circles(_,_::_),_) | |
1097 | | (Ast0.Stars(_,_::_),_) -> | |
1098 | failwith "whencode not allowed in a pattern3" | |
1099 | | (Ast0.OptStm(rea),Ast0.OptStm(reb)) | |
1100 | | (Ast0.UniqueStm(rea),Ast0.UniqueStm(reb)) -> | |
1101 | match_statement rea reb | |
1102 | | (_,Ast0.OptStm(reb)) | |
1103 | | (_,Ast0.UniqueStm(reb)) -> match_statement pattern reb | |
1104 | | _ -> return false | |
1105 | else return_false (ContextRequired (Ast0.StmtTag s)) | |
faf9a90c | 1106 | |
34e49164 C |
1107 | (* first should provide a subset of the information in the second *) |
1108 | and match_fninfo patterninfo cinfo = | |
1109 | let patterninfo = List.sort compare patterninfo in | |
1110 | let cinfo = List.sort compare cinfo in | |
1111 | let rec loop = function | |
1112 | (Ast0.FStorage(sta)::resta,Ast0.FStorage(stb)::restb) -> | |
1113 | if mcode_equal sta stb | |
1114 | then conjunct_bindings (check_mcode sta stb) (loop (resta,restb)) | |
1115 | else return false | |
1116 | | (Ast0.FType(tya)::resta,Ast0.FType(tyb)::restb) -> | |
1117 | conjunct_bindings (match_typeC tya tyb) (loop (resta,restb)) | |
1118 | | (Ast0.FInline(ia)::resta,Ast0.FInline(ib)::restb) -> | |
1119 | if mcode_equal ia ib | |
1120 | then conjunct_bindings (check_mcode ia ib) (loop (resta,restb)) | |
1121 | else return false | |
1122 | | (Ast0.FAttr(ia)::resta,Ast0.FAttr(ib)::restb) -> | |
1123 | if mcode_equal ia ib | |
1124 | then conjunct_bindings (check_mcode ia ib) (loop (resta,restb)) | |
1125 | else return false | |
1126 | | (x::resta,((y::_) as restb)) -> | |
1127 | (match compare x y with | |
1128 | -1 -> return false | |
1129 | | 1 -> loop (resta,restb) | |
1130 | | _ -> failwith "not possible") | |
1131 | | _ -> return false in | |
1132 | loop (patterninfo,cinfo) | |
faf9a90c | 1133 | |
34e49164 C |
1134 | and match_case_line pattern c = |
1135 | if not(checks_needed) or not(context_required) or is_context c | |
1136 | then | |
1137 | match (Ast0.unwrap pattern,Ast0.unwrap c) with | |
1138 | (Ast0.Default(d1,c1,codea),Ast0.Default(d,c,codeb)) -> | |
1139 | conjunct_many_bindings | |
1140 | [check_mcode d1 d; check_mcode c1 c; | |
1141 | match_dots match_statement is_slist_matcher do_slist_match | |
1142 | codea codeb] | |
1143 | | (Ast0.Case(ca1,expa,c1,codea),Ast0.Case(ca,expb,c,codeb)) -> | |
1144 | conjunct_many_bindings | |
1145 | [check_mcode ca1 ca; check_mcode c1 c; match_expr expa expb; | |
1146 | match_dots match_statement is_slist_matcher do_slist_match | |
1147 | codea codeb] | |
fc1ad971 C |
1148 | | (Ast0.DisjCase(_,case_linesa,_,_),_) -> |
1149 | failwith "not allowed in the pattern of an isomorphism" | |
34e49164 C |
1150 | | (Ast0.OptCase(ca),Ast0.OptCase(cb)) -> match_case_line ca cb |
1151 | | (_,Ast0.OptCase(cb)) -> match_case_line pattern cb | |
1152 | | _ -> return false | |
1153 | else return_false (ContextRequired (Ast0.CaseLineTag c)) in | |
faf9a90c | 1154 | |
34e49164 C |
1155 | let match_statement_dots x y = |
1156 | match_dots match_statement is_slist_matcher do_slist_match x y in | |
faf9a90c | 1157 | |
34e49164 C |
1158 | (match_expr, match_decl, match_statement, match_typeC, |
1159 | match_statement_dots) | |
faf9a90c | 1160 | |
34e49164 C |
1161 | let match_expr dochecks context_required whencode_allowed = |
1162 | let (fn,_,_,_,_) = match_maker dochecks context_required whencode_allowed in | |
1163 | fn | |
faf9a90c | 1164 | |
34e49164 C |
1165 | let match_decl dochecks context_required whencode_allowed = |
1166 | let (_,fn,_,_,_) = match_maker dochecks context_required whencode_allowed in | |
1167 | fn | |
faf9a90c | 1168 | |
34e49164 C |
1169 | let match_statement dochecks context_required whencode_allowed = |
1170 | let (_,_,fn,_,_) = match_maker dochecks context_required whencode_allowed in | |
1171 | fn | |
faf9a90c | 1172 | |
34e49164 C |
1173 | let match_typeC dochecks context_required whencode_allowed = |
1174 | let (_,_,_,fn,_) = match_maker dochecks context_required whencode_allowed in | |
1175 | fn | |
faf9a90c | 1176 | |
34e49164 C |
1177 | let match_statement_dots dochecks context_required whencode_allowed = |
1178 | let (_,_,_,_,fn) = match_maker dochecks context_required whencode_allowed in | |
1179 | fn | |
faf9a90c | 1180 | |
34e49164 C |
1181 | (* --------------------------------------------------------------------- *) |
1182 | (* make an entire tree MINUS *) | |
faf9a90c | 1183 | |
34e49164 | 1184 | let make_minus = |
708f4980 | 1185 | let mcode (term,arity,info,mcodekind,pos,adj) = |
34e49164 C |
1186 | let new_mcodekind = |
1187 | match mcodekind with | |
1188 | Ast0.CONTEXT(mc) -> | |
1189 | (match !mc with | |
1190 | (Ast.NOTHING,_,_) -> Ast0.MINUS(ref([],Ast0.default_token_info)) | |
1191 | | _ -> failwith "make_minus: unexpected befaft") | |
1192 | | Ast0.MINUS(mc) -> mcodekind (* in the part copied from the src term *) | |
1193 | | _ -> failwith "make_minus mcode: unexpected mcodekind" in | |
708f4980 | 1194 | (term,arity,info,new_mcodekind,pos,adj) in |
faf9a90c | 1195 | |
34e49164 C |
1196 | let update_mc mcodekind e = |
1197 | match !mcodekind with | |
1198 | Ast0.CONTEXT(mc) -> | |
1199 | (match !mc with | |
1200 | (Ast.NOTHING,_,_) -> | |
1201 | mcodekind := Ast0.MINUS(ref([],Ast0.default_token_info)) | |
1202 | | _ -> failwith "make_minus: unexpected befaft") | |
1203 | | Ast0.MINUS(_mc) -> () (* in the part copied from the src term *) | |
951c7801 | 1204 | | Ast0.PLUS _ -> failwith "make_minus donothing: unexpected plus mcodekind" |
34e49164 | 1205 | | _ -> failwith "make_minus donothing: unexpected mcodekind" in |
faf9a90c | 1206 | |
34e49164 C |
1207 | let donothing r k e = |
1208 | let mcodekind = Ast0.get_mcodekind_ref e in | |
1209 | let e = k e in update_mc mcodekind e; e in | |
faf9a90c | 1210 | |
34e49164 C |
1211 | (* special case for whencode, because it isn't processed by contextneg, |
1212 | since it doesn't appear in the + code *) | |
1213 | (* cases for dots and nests *) | |
1214 | let expression r k e = | |
1215 | let mcodekind = Ast0.get_mcodekind_ref e in | |
1216 | match Ast0.unwrap e with | |
1217 | Ast0.Edots(d,whencode) -> | |
1218 | (*don't recurse because whencode hasn't been processed by context_neg*) | |
1219 | update_mc mcodekind e; Ast0.rewrap e (Ast0.Edots(mcode d,whencode)) | |
1220 | | Ast0.Ecircles(d,whencode) -> | |
1221 | (*don't recurse because whencode hasn't been processed by context_neg*) | |
1222 | update_mc mcodekind e; Ast0.rewrap e (Ast0.Ecircles(mcode d,whencode)) | |
1223 | | Ast0.Estars(d,whencode) -> | |
1224 | (*don't recurse because whencode hasn't been processed by context_neg*) | |
1225 | update_mc mcodekind e; Ast0.rewrap e (Ast0.Estars(mcode d,whencode)) | |
1226 | | Ast0.NestExpr(starter,expr_dots,ender,whencode,multi) -> | |
1227 | update_mc mcodekind e; | |
1228 | Ast0.rewrap e | |
1229 | (Ast0.NestExpr(mcode starter, | |
b1b2de81 | 1230 | r.VT0.rebuilder_rec_expression_dots expr_dots, |
34e49164 C |
1231 | mcode ender,whencode,multi)) |
1232 | | _ -> donothing r k e in | |
faf9a90c | 1233 | |
34e49164 C |
1234 | let declaration r k e = |
1235 | let mcodekind = Ast0.get_mcodekind_ref e in | |
1236 | match Ast0.unwrap e with | |
1237 | Ast0.Ddots(d,whencode) -> | |
1238 | (*don't recurse because whencode hasn't been processed by context_neg*) | |
1239 | update_mc mcodekind e; Ast0.rewrap e (Ast0.Ddots(mcode d,whencode)) | |
1240 | | _ -> donothing r k e in | |
faf9a90c | 1241 | |
34e49164 C |
1242 | let statement r k e = |
1243 | let mcodekind = Ast0.get_mcodekind_ref e in | |
1244 | match Ast0.unwrap e with | |
1245 | Ast0.Dots(d,whencode) -> | |
1246 | (*don't recurse because whencode hasn't been processed by context_neg*) | |
1247 | update_mc mcodekind e; Ast0.rewrap e (Ast0.Dots(mcode d,whencode)) | |
1248 | | Ast0.Circles(d,whencode) -> | |
1249 | update_mc mcodekind e; Ast0.rewrap e (Ast0.Circles(mcode d,whencode)) | |
1250 | | Ast0.Stars(d,whencode) -> | |
1251 | update_mc mcodekind e; Ast0.rewrap e (Ast0.Stars(mcode d,whencode)) | |
1252 | | Ast0.Nest(starter,stmt_dots,ender,whencode,multi) -> | |
1253 | update_mc mcodekind e; | |
1254 | Ast0.rewrap e | |
b1b2de81 C |
1255 | (Ast0.Nest |
1256 | (mcode starter,r.VT0.rebuilder_rec_statement_dots stmt_dots, | |
1257 | mcode ender,whencode,multi)) | |
34e49164 | 1258 | | _ -> donothing r k e in |
faf9a90c | 1259 | |
34e49164 C |
1260 | let initialiser r k e = |
1261 | let mcodekind = Ast0.get_mcodekind_ref e in | |
1262 | match Ast0.unwrap e with | |
1263 | Ast0.Idots(d,whencode) -> | |
1264 | (*don't recurse because whencode hasn't been processed by context_neg*) | |
1265 | update_mc mcodekind e; Ast0.rewrap e (Ast0.Idots(mcode d,whencode)) | |
1266 | | _ -> donothing r k e in | |
faf9a90c | 1267 | |
34e49164 C |
1268 | let dots r k e = |
1269 | let info = Ast0.get_info e in | |
1270 | let mcodekind = Ast0.get_mcodekind_ref e in | |
1271 | match Ast0.unwrap e with | |
1272 | Ast0.DOTS([]) -> | |
1273 | (* if context is - this should be - as well. There are no tokens | |
1274 | here though, so the bottom-up minusifier in context_neg leaves it | |
485bce71 C |
1275 | as mixed (or context for sgrep2). It would be better to fix |
1276 | context_neg, but that would | |
34e49164 C |
1277 | require a special case for each term with a dots subterm. *) |
1278 | (match !mcodekind with | |
485bce71 | 1279 | Ast0.MIXED(mc) | Ast0.CONTEXT(mc) -> |
34e49164 C |
1280 | (match !mc with |
1281 | (Ast.NOTHING,_,_) -> | |
1282 | mcodekind := Ast0.MINUS(ref([],Ast0.default_token_info)); | |
1283 | e | |
1284 | | _ -> failwith "make_minus: unexpected befaft") | |
1285 | (* code already processed by an enclosing iso *) | |
1286 | | Ast0.MINUS(mc) -> e | |
1287 | | _ -> | |
1288 | failwith | |
1289 | (Printf.sprintf | |
485bce71 | 1290 | "%d: make_minus donothingxxx: unexpected mcodekind: %s" |
0708f913 | 1291 | info.Ast0.pos_info.Ast0.line_start (Dumper.dump e))) |
34e49164 | 1292 | | _ -> donothing r k e in |
faf9a90c | 1293 | |
b1b2de81 | 1294 | V0.flat_rebuilder |
34e49164 | 1295 | mcode mcode mcode mcode mcode mcode mcode mcode mcode mcode mcode mcode |
34e49164 C |
1296 | dots dots dots dots dots dots |
1297 | donothing expression donothing initialiser donothing declaration | |
1298 | statement donothing donothing | |
faf9a90c | 1299 | |
34e49164 C |
1300 | (* --------------------------------------------------------------------- *) |
1301 | (* rebuild mcode cells in an instantiated alt *) | |
faf9a90c | 1302 | |
34e49164 C |
1303 | (* mcodes will be side effected later with plus code, so we have to copy |
1304 | them on instantiating an isomorphism. One could wonder whether it would | |
1305 | be better not to use side-effects, but they are convenient for insert_plus | |
1306 | where is it useful to manipulate a list of the mcodes but side-effect a | |
1307 | tree *) | |
1308 | (* hmm... Insert_plus is called before Iso_pattern... *) | |
1309 | let rebuild_mcode start_line = | |
1310 | let copy_mcodekind = function | |
1311 | Ast0.CONTEXT(mc) -> Ast0.CONTEXT(ref (!mc)) | |
951c7801 C |
1312 | | Ast0.MINUS(mc) -> Ast0.MINUS(ref (!mc)) |
1313 | | Ast0.MIXED(mc) -> Ast0.MIXED(ref (!mc)) | |
1314 | | Ast0.PLUS count -> | |
34e49164 C |
1315 | (* this function is used elsewhere where we need to rebuild the |
1316 | indices, and so we allow PLUS code as well *) | |
951c7801 | 1317 | Ast0.PLUS count in |
faf9a90c | 1318 | |
708f4980 | 1319 | let mcode (term,arity,info,mcodekind,pos,adj) = |
34e49164 C |
1320 | let info = |
1321 | match start_line with | |
0708f913 C |
1322 | Some x -> |
1323 | let new_pos_info = | |
1324 | {info.Ast0.pos_info with | |
1325 | Ast0.line_start = x; | |
1326 | Ast0.line_end = x; } in | |
1327 | {info with Ast0.pos_info = new_pos_info} | |
34e49164 | 1328 | | None -> info in |
708f4980 | 1329 | (term,arity,info,copy_mcodekind mcodekind,pos,adj) in |
faf9a90c | 1330 | |
34e49164 C |
1331 | let copy_one x = |
1332 | let old_info = Ast0.get_info x in | |
1333 | let info = | |
1334 | match start_line with | |
0708f913 C |
1335 | Some x -> |
1336 | let new_pos_info = | |
1337 | {old_info.Ast0.pos_info with | |
1338 | Ast0.line_start = x; | |
1339 | Ast0.line_end = x; } in | |
1340 | {old_info with Ast0.pos_info = new_pos_info} | |
34e49164 C |
1341 | | None -> old_info in |
1342 | {x with Ast0.info = info; Ast0.index = ref(Ast0.get_index x); | |
1343 | Ast0.mcodekind = ref (copy_mcodekind (Ast0.get_mcodekind x))} in | |
faf9a90c | 1344 | |
34e49164 | 1345 | let donothing r k e = copy_one (k e) in |
faf9a90c | 1346 | |
34e49164 C |
1347 | (* case for control operators (if, etc) *) |
1348 | let statement r k e = | |
1349 | let s = k e in | |
1350 | let res = | |
1351 | copy_one | |
1352 | (Ast0.rewrap s | |
1353 | (match Ast0.unwrap s with | |
1354 | Ast0.Decl((info,mc),decl) -> | |
1355 | Ast0.Decl((info,copy_mcodekind mc),decl) | |
1356 | | Ast0.IfThen(iff,lp,tst,rp,branch,(info,mc)) -> | |
1357 | Ast0.IfThen(iff,lp,tst,rp,branch,(info,copy_mcodekind mc)) | |
1358 | | Ast0.IfThenElse(iff,lp,tst,rp,branch1,els,branch2,(info,mc)) -> | |
1359 | Ast0.IfThenElse(iff,lp,tst,rp,branch1,els,branch2, | |
1360 | (info,copy_mcodekind mc)) | |
1361 | | Ast0.While(whl,lp,exp,rp,body,(info,mc)) -> | |
1362 | Ast0.While(whl,lp,exp,rp,body,(info,copy_mcodekind mc)) | |
1363 | | Ast0.For(fr,lp,e1,sem1,e2,sem2,e3,rp,body,(info,mc)) -> | |
1364 | Ast0.For(fr,lp,e1,sem1,e2,sem2,e3,rp,body, | |
1365 | (info,copy_mcodekind mc)) | |
1366 | | Ast0.Iterator(nm,lp,args,rp,body,(info,mc)) -> | |
1367 | Ast0.Iterator(nm,lp,args,rp,body,(info,copy_mcodekind mc)) | |
1368 | | Ast0.FunDecl | |
1369 | ((info,mc),fninfo,name,lp,params,rp,lbrace,body,rbrace) -> | |
1370 | Ast0.FunDecl | |
1371 | ((info,copy_mcodekind mc), | |
1372 | fninfo,name,lp,params,rp,lbrace,body,rbrace) | |
1373 | | s -> s)) in | |
1374 | Ast0.set_dots_bef_aft res | |
1375 | (match Ast0.get_dots_bef_aft res with | |
1376 | Ast0.NoDots -> Ast0.NoDots | |
1377 | | Ast0.AddingBetweenDots s -> | |
b1b2de81 | 1378 | Ast0.AddingBetweenDots(r.VT0.rebuilder_rec_statement s) |
34e49164 | 1379 | | Ast0.DroppingBetweenDots s -> |
b1b2de81 | 1380 | Ast0.DroppingBetweenDots(r.VT0.rebuilder_rec_statement s)) in |
faf9a90c | 1381 | |
b1b2de81 | 1382 | V0.flat_rebuilder |
34e49164 | 1383 | mcode mcode mcode mcode mcode mcode mcode mcode mcode mcode mcode mcode |
34e49164 C |
1384 | donothing donothing donothing donothing donothing donothing |
1385 | donothing donothing donothing donothing donothing | |
1386 | donothing statement donothing donothing | |
faf9a90c | 1387 | |
34e49164 C |
1388 | (* --------------------------------------------------------------------- *) |
1389 | (* The problem of whencode. If an isomorphism contains dots in multiple | |
1390 | rules, then the code that is matched cannot contain whencode, because we | |
1391 | won't know which dots it goes with. Should worry about nests, but they | |
1392 | aren't allowed in isomorphisms for the moment. *) | |
faf9a90c | 1393 | |
34e49164 | 1394 | let count_edots = |
34e49164 C |
1395 | let option_default = 0 in |
1396 | let bind x y = x + y in | |
34e49164 C |
1397 | let exprfn r k e = |
1398 | match Ast0.unwrap e with | |
1399 | Ast0.Edots(_,_) | Ast0.Ecircles(_,_) | Ast0.Estars(_,_) -> 1 | |
1400 | | _ -> 0 in | |
faf9a90c | 1401 | |
34e49164 | 1402 | V0.combiner bind option_default |
b1b2de81 | 1403 | {V0.combiner_functions with VT0.combiner_exprfn = exprfn} |
faf9a90c | 1404 | |
34e49164 | 1405 | let count_idots = |
34e49164 C |
1406 | let option_default = 0 in |
1407 | let bind x y = x + y in | |
34e49164 C |
1408 | let initfn r k e = |
1409 | match Ast0.unwrap e with Ast0.Idots(_,_) -> 1 | _ -> 0 in | |
faf9a90c | 1410 | |
34e49164 | 1411 | V0.combiner bind option_default |
b1b2de81 | 1412 | {V0.combiner_functions with VT0.combiner_initfn = initfn} |
faf9a90c | 1413 | |
34e49164 | 1414 | let count_dots = |
34e49164 C |
1415 | let option_default = 0 in |
1416 | let bind x y = x + y in | |
34e49164 C |
1417 | let stmtfn r k e = |
1418 | match Ast0.unwrap e with | |
1419 | Ast0.Dots(_,_) | Ast0.Circles(_,_) | Ast0.Stars(_,_) -> 1 | |
1420 | | _ -> 0 in | |
faf9a90c | 1421 | |
34e49164 | 1422 | V0.combiner bind option_default |
b1b2de81 | 1423 | {V0.combiner_functions with VT0.combiner_stmtfn = stmtfn} |
faf9a90c | 1424 | |
34e49164 | 1425 | (* --------------------------------------------------------------------- *) |
faf9a90c | 1426 | |
34e49164 C |
1427 | let lookup name bindings mv_bindings = |
1428 | try Common.Left (List.assoc (term name) bindings) | |
1429 | with | |
1430 | Not_found -> | |
1431 | (* failure is not possible anymore *) | |
1432 | Common.Right (List.assoc (term name) mv_bindings) | |
1433 | ||
1434 | (* mv_bindings is for the fresh metavariables that are introduced by the | |
1435 | isomorphism *) | |
1436 | let instantiate bindings mv_bindings = | |
1437 | let mcode x = | |
1438 | match Ast0.get_pos x with | |
1439 | Ast0.MetaPos(name,_,_) -> | |
1440 | (try | |
1441 | match lookup name bindings mv_bindings with | |
1442 | Common.Left(Ast0.MetaPosTag(id)) -> Ast0.set_pos id x | |
1443 | | _ -> failwith "not possible" | |
1444 | with Not_found -> Ast0.set_pos Ast0.NoMetaPos x) | |
1445 | | _ -> x in | |
1446 | let donothing r k e = k e in | |
1447 | ||
1448 | (* cases where metavariables can occur *) | |
1449 | let identfn r k e = | |
1450 | let e = k e in | |
1451 | match Ast0.unwrap e with | |
1452 | Ast0.MetaId(name,constraints,pure) -> | |
b1b2de81 | 1453 | (rebuild_mcode None).VT0.rebuilder_rec_ident |
34e49164 C |
1454 | (match lookup name bindings mv_bindings with |
1455 | Common.Left(Ast0.IdentTag(id)) -> id | |
1456 | | Common.Left(_) -> failwith "not possible 1" | |
1457 | | Common.Right(new_mv) -> | |
1458 | Ast0.rewrap e | |
1459 | (Ast0.MetaId | |
1460 | (Ast0.set_mcode_data new_mv name,constraints,pure))) | |
1461 | | Ast0.MetaFunc(name,_,pure) -> failwith "metafunc not supported" | |
1462 | | Ast0.MetaLocalFunc(name,_,pure) -> failwith "metalocalfunc not supported" | |
1463 | | _ -> e in | |
1464 | ||
1465 | (* case for list metavariables *) | |
1466 | let rec elist r same_dots = function | |
1467 | [] -> [] | |
1468 | | [x] -> | |
1469 | (match Ast0.unwrap x with | |
1470 | Ast0.MetaExprList(name,lenname,pure) -> | |
1471 | failwith "meta_expr_list in iso not supported" | |
1472 | (*match lookup name bindings mv_bindings with | |
1473 | Common.Left(Ast0.DotsExprTag(exp)) -> | |
1474 | (match same_dots exp with | |
1475 | Some l -> l | |
1476 | | None -> failwith "dots put in incompatible context") | |
1477 | | Common.Left(Ast0.ExprTag(exp)) -> [exp] | |
1478 | | Common.Left(_) -> failwith "not possible 1" | |
1479 | | Common.Right(new_mv) -> | |
1480 | failwith "MetaExprList in SP not supported"*) | |
b1b2de81 C |
1481 | | _ -> [r.VT0.rebuilder_rec_expression x]) |
1482 | | x::xs -> (r.VT0.rebuilder_rec_expression x)::(elist r same_dots xs) in | |
34e49164 C |
1483 | |
1484 | let rec plist r same_dots = function | |
1485 | [] -> [] | |
1486 | | [x] -> | |
1487 | (match Ast0.unwrap x with | |
1488 | Ast0.MetaParamList(name,lenname,pure) -> | |
1489 | failwith "meta_param_list in iso not supported" | |
1490 | (*match lookup name bindings mv_bindings with | |
1491 | Common.Left(Ast0.DotsParamTag(param)) -> | |
1492 | (match same_dots param with | |
1493 | Some l -> l | |
1494 | | None -> failwith "dots put in incompatible context") | |
1495 | | Common.Left(Ast0.ParamTag(param)) -> [param] | |
1496 | | Common.Left(_) -> failwith "not possible 1" | |
1497 | | Common.Right(new_mv) -> | |
1498 | failwith "MetaExprList in SP not supported"*) | |
b1b2de81 C |
1499 | | _ -> [r.VT0.rebuilder_rec_parameter x]) |
1500 | | x::xs -> (r.VT0.rebuilder_rec_parameter x)::(plist r same_dots xs) in | |
34e49164 C |
1501 | |
1502 | let rec slist r same_dots = function | |
1503 | [] -> [] | |
1504 | | [x] -> | |
1505 | (match Ast0.unwrap x with | |
1506 | Ast0.MetaStmtList(name,pure) -> | |
1507 | (match lookup name bindings mv_bindings with | |
1508 | Common.Left(Ast0.DotsStmtTag(stm)) -> | |
1509 | (match same_dots stm with | |
1510 | Some l -> l | |
1511 | | None -> failwith "dots put in incompatible context") | |
1512 | | Common.Left(Ast0.StmtTag(stm)) -> [stm] | |
1513 | | Common.Left(_) -> failwith "not possible 1" | |
1514 | | Common.Right(new_mv) -> | |
1515 | failwith "MetaExprList in SP not supported") | |
b1b2de81 C |
1516 | | _ -> [r.VT0.rebuilder_rec_statement x]) |
1517 | | x::xs -> (r.VT0.rebuilder_rec_statement x)::(slist r same_dots xs) in | |
34e49164 C |
1518 | |
1519 | let same_dots d = | |
1520 | match Ast0.unwrap d with Ast0.DOTS(l) -> Some l |_ -> None in | |
1521 | let same_circles d = | |
1522 | match Ast0.unwrap d with Ast0.CIRCLES(l) -> Some l |_ -> None in | |
1523 | let same_stars d = | |
1524 | match Ast0.unwrap d with Ast0.STARS(l) -> Some l |_ -> None in | |
1525 | ||
1526 | let dots list_fn r k d = | |
1527 | Ast0.rewrap d | |
1528 | (match Ast0.unwrap d with | |
1529 | Ast0.DOTS(l) -> Ast0.DOTS(list_fn r same_dots l) | |
1530 | | Ast0.CIRCLES(l) -> Ast0.CIRCLES(list_fn r same_circles l) | |
1531 | | Ast0.STARS(l) -> Ast0.STARS(list_fn r same_stars l)) in | |
1532 | ||
1533 | let exprfn r k old_e = (* need to keep the original code for ! optim *) | |
1534 | let e = k old_e in | |
1535 | let e1 = | |
1536 | match Ast0.unwrap e with | |
1537 | Ast0.MetaExpr(name,constraints,x,form,pure) -> | |
b1b2de81 | 1538 | (rebuild_mcode None).VT0.rebuilder_rec_expression |
34e49164 C |
1539 | (match lookup name bindings mv_bindings with |
1540 | Common.Left(Ast0.ExprTag(exp)) -> exp | |
1541 | | Common.Left(_) -> failwith "not possible 1" | |
1542 | | Common.Right(new_mv) -> | |
1543 | let new_types = | |
1544 | match x with | |
1545 | None -> None | |
1546 | | Some types -> | |
1547 | let rec renamer = function | |
1548 | Type_cocci.MetaType(name,keep,inherited) -> | |
1549 | (match | |
708f4980 | 1550 | lookup (name,(),(),(),None,-1) bindings mv_bindings |
34e49164 C |
1551 | with |
1552 | Common.Left(Ast0.TypeCTag(t)) -> | |
1553 | Ast0.ast0_type_to_type t | |
1554 | | Common.Left(_) -> | |
1555 | failwith "iso pattern: unexpected type" | |
1556 | | Common.Right(new_mv) -> | |
1557 | Type_cocci.MetaType(new_mv,keep,inherited)) | |
1558 | | Type_cocci.ConstVol(cv,ty) -> | |
1559 | Type_cocci.ConstVol(cv,renamer ty) | |
1560 | | Type_cocci.Pointer(ty) -> | |
1561 | Type_cocci.Pointer(renamer ty) | |
1562 | | Type_cocci.FunctionPointer(ty) -> | |
1563 | Type_cocci.FunctionPointer(renamer ty) | |
1564 | | Type_cocci.Array(ty) -> | |
1565 | Type_cocci.Array(renamer ty) | |
1566 | | t -> t in | |
1567 | Some(List.map renamer types) in | |
1568 | Ast0.rewrap e | |
1569 | (Ast0.MetaExpr | |
1570 | (Ast0.set_mcode_data new_mv name,constraints, | |
1571 | new_types,form,pure))) | |
1572 | | Ast0.MetaErr(namea,_,pure) -> failwith "metaerr not supported" | |
1573 | | Ast0.MetaExprList(namea,lenname,pure) -> | |
1574 | failwith "metaexprlist not supported" | |
1575 | | Ast0.Unary(exp,unop) -> | |
1576 | (match Ast0.unwrap_mcode unop with | |
fc1ad971 C |
1577 | (* propagate negation only when the propagated and the encountered |
1578 | negation have the same transformation, when there is nothing | |
1579 | added to the original one, and when there is nothing added to | |
1580 | the expression into which we are doing the propagation. This | |
1581 | may be too conservative. *) | |
34e49164 C |
1582 | Ast.Not -> |
1583 | let was_meta = | |
1584 | (* k e doesn't change the outer structure of the term, | |
1585 | only the metavars *) | |
1586 | match Ast0.unwrap old_e with | |
1587 | Ast0.Unary(exp,_) -> | |
1588 | (match Ast0.unwrap exp with | |
1589 | Ast0.MetaExpr(name,constraints,x,form,pure) -> true | |
1590 | | _ -> false) | |
1591 | | _ -> failwith "not possible" in | |
fc1ad971 | 1592 | let nomodif = function |
34e49164 C |
1593 | Ast0.MINUS(x) -> |
1594 | (match !x with | |
1595 | ([],_) -> true | |
1596 | | _ -> false) | |
1597 | | Ast0.CONTEXT(x) | Ast0.MIXED(x) -> | |
1598 | (match !x with | |
1599 | (Ast.NOTHING,_,_) -> true | |
1600 | | _ -> false) | |
1601 | | _ -> failwith "plus not possible" in | |
fc1ad971 C |
1602 | let same_modif newop oldop = |
1603 | (* only propagate ! is they have the same modification | |
1604 | and no + code on the old one (the new one from the iso | |
1605 | surely has no + code) *) | |
1606 | match (newop,oldop) with | |
1607 | (Ast0.MINUS(x1),Ast0.MINUS(x2)) -> nomodif oldop | |
1608 | | (Ast0.CONTEXT(x1),Ast0.CONTEXT(x2)) -> nomodif oldop | |
1609 | | (Ast0.MIXED(x1),Ast0.MIXED(x2)) -> nomodif oldop | |
1610 | | _ -> false in | |
1611 | if was_meta | |
34e49164 | 1612 | then |
91eba41f C |
1613 | let idcont x = x in |
1614 | let rec negate e (*for rewrapping*) res (*code to process*) k = | |
1615 | (* k accumulates parens, to keep negation outside if no | |
1616 | propagation is possible *) | |
fc1ad971 C |
1617 | if nomodif (Ast0.get_mcodekind e) |
1618 | then | |
1619 | match Ast0.unwrap res with | |
1620 | Ast0.Unary(e1,op) when Ast0.unwrap_mcode op = Ast.Not && | |
1621 | same_modif | |
1622 | (Ast0.get_mcode_mcodekind unop) | |
1623 | (Ast0.get_mcode_mcodekind op) -> | |
1624 | k e1 | |
1625 | | Ast0.Edots(_,_) -> k (Ast0.rewrap e (Ast0.unwrap res)) | |
951c7801 C |
1626 | | Ast0.Paren(lp,e1,rp) -> |
1627 | negate e e1 | |
fc1ad971 C |
1628 | (function x -> |
1629 | k (Ast0.rewrap res (Ast0.Paren(lp,x,rp)))) | |
1630 | | Ast0.Binary(e1,op,e2) when | |
1631 | same_modif | |
1632 | (Ast0.get_mcode_mcodekind unop) | |
1633 | (Ast0.get_mcode_mcodekind op)-> | |
1634 | let reb nop = | |
1635 | Ast0.rewrap_mcode op (Ast.Logical(nop)) in | |
1636 | let k1 x = k (Ast0.rewrap e x) in | |
1637 | (match Ast0.unwrap_mcode op with | |
1638 | Ast.Logical(Ast.Inf) -> | |
1639 | k1 (Ast0.Binary(e1,reb Ast.SupEq,e2)) | |
1640 | | Ast.Logical(Ast.Sup) -> | |
1641 | k1 (Ast0.Binary(e1,reb Ast.InfEq,e2)) | |
1642 | | Ast.Logical(Ast.InfEq) -> | |
1643 | k1 (Ast0.Binary(e1,reb Ast.Sup,e2)) | |
1644 | | Ast.Logical(Ast.SupEq) -> | |
1645 | k1 (Ast0.Binary(e1,reb Ast.Inf,e2)) | |
1646 | | Ast.Logical(Ast.Eq) -> | |
1647 | k1 (Ast0.Binary(e1,reb Ast.NotEq,e2)) | |
1648 | | Ast.Logical(Ast.NotEq) -> | |
1649 | k1 (Ast0.Binary(e1,reb Ast.Eq,e2)) | |
1650 | | Ast.Logical(Ast.AndLog) -> | |
1651 | k1 (Ast0.Binary(negate e1 e1 idcont, | |
1652 | reb Ast.OrLog, | |
1653 | negate e2 e2 idcont)) | |
1654 | | Ast.Logical(Ast.OrLog) -> | |
1655 | k1 (Ast0.Binary(negate e1 e1 idcont, | |
1656 | reb Ast.AndLog, | |
1657 | negate e2 e2 idcont)) | |
1658 | | _ -> | |
1659 | Ast0.rewrap e | |
1660 | (Ast0.Unary(k res, | |
1661 | Ast0.rewrap_mcode op Ast.Not))) | |
1662 | | Ast0.DisjExpr(lp,exps,mids,rp) -> | |
34e49164 | 1663 | (* use res because it is the transformed argument *) |
fc1ad971 C |
1664 | let exps = List.map (function e -> negate e e k) exps in |
1665 | Ast0.rewrap res (Ast0.DisjExpr(lp,exps,mids,rp)) | |
1666 | | _ -> | |
34e49164 | 1667 | (*use e, because this might be the toplevel expression*) |
fc1ad971 C |
1668 | Ast0.rewrap e |
1669 | (Ast0.Unary(k res,Ast0.rewrap_mcode unop Ast.Not)) | |
1670 | else | |
1671 | Ast0.rewrap e | |
1672 | (Ast0.Unary(k res,Ast0.rewrap_mcode unop Ast.Not)) in | |
91eba41f | 1673 | negate e exp idcont |
34e49164 C |
1674 | else e |
1675 | | _ -> e) | |
1676 | | Ast0.Edots(d,_) -> | |
1677 | (try | |
1678 | (match List.assoc (dot_term d) bindings with | |
1679 | Ast0.ExprTag(exp) -> Ast0.rewrap e (Ast0.Edots(d,Some exp)) | |
1680 | | _ -> failwith "unexpected binding") | |
1681 | with Not_found -> e) | |
1682 | | Ast0.Ecircles(d,_) -> | |
1683 | (try | |
1684 | (match List.assoc (dot_term d) bindings with | |
1685 | Ast0.ExprTag(exp) -> Ast0.rewrap e (Ast0.Ecircles(d,Some exp)) | |
1686 | | _ -> failwith "unexpected binding") | |
1687 | with Not_found -> e) | |
1688 | | Ast0.Estars(d,_) -> | |
1689 | (try | |
1690 | (match List.assoc (dot_term d) bindings with | |
1691 | Ast0.ExprTag(exp) -> Ast0.rewrap e (Ast0.Estars(d,Some exp)) | |
1692 | | _ -> failwith "unexpected binding") | |
1693 | with Not_found -> e) | |
1694 | | _ -> e in | |
1695 | if Ast0.get_test_exp old_e then Ast0.set_test_exp e1 else e1 in | |
1696 | ||
1697 | let tyfn r k e = | |
1698 | let e = k e in | |
1699 | match Ast0.unwrap e with | |
1700 | Ast0.MetaType(name,pure) -> | |
b1b2de81 | 1701 | (rebuild_mcode None).VT0.rebuilder_rec_typeC |
34e49164 C |
1702 | (match lookup name bindings mv_bindings with |
1703 | Common.Left(Ast0.TypeCTag(ty)) -> ty | |
1704 | | Common.Left(_) -> failwith "not possible 1" | |
1705 | | Common.Right(new_mv) -> | |
1706 | Ast0.rewrap e | |
1707 | (Ast0.MetaType(Ast0.set_mcode_data new_mv name,pure))) | |
1708 | | _ -> e in | |
1709 | ||
113803cf C |
1710 | let initfn r k e = |
1711 | let e = k e in | |
1712 | match Ast0.unwrap e with | |
1713 | Ast0.MetaInit(name,pure) -> | |
b1b2de81 | 1714 | (rebuild_mcode None).VT0.rebuilder_rec_initialiser |
113803cf C |
1715 | (match lookup name bindings mv_bindings with |
1716 | Common.Left(Ast0.InitTag(ty)) -> ty | |
1717 | | Common.Left(_) -> failwith "not possible 1" | |
1718 | | Common.Right(new_mv) -> | |
1719 | Ast0.rewrap e | |
1720 | (Ast0.MetaInit(Ast0.set_mcode_data new_mv name,pure))) | |
1721 | | _ -> e in | |
1722 | ||
34e49164 C |
1723 | let declfn r k e = |
1724 | let e = k e in | |
1725 | match Ast0.unwrap e with | |
1726 | Ast0.Ddots(d,_) -> | |
1727 | (try | |
1728 | (match List.assoc (dot_term d) bindings with | |
1729 | Ast0.DeclTag(exp) -> Ast0.rewrap e (Ast0.Ddots(d,Some exp)) | |
1730 | | _ -> failwith "unexpected binding") | |
1731 | with Not_found -> e) | |
1732 | | _ -> e in | |
1733 | ||
1734 | let paramfn r k e = | |
1735 | let e = k e in | |
1736 | match Ast0.unwrap e with | |
1737 | Ast0.MetaParam(name,pure) -> | |
b1b2de81 | 1738 | (rebuild_mcode None).VT0.rebuilder_rec_parameter |
34e49164 C |
1739 | (match lookup name bindings mv_bindings with |
1740 | Common.Left(Ast0.ParamTag(param)) -> param | |
1741 | | Common.Left(_) -> failwith "not possible 1" | |
1742 | | Common.Right(new_mv) -> | |
1743 | Ast0.rewrap e | |
1744 | (Ast0.MetaParam(Ast0.set_mcode_data new_mv name, pure))) | |
1745 | | Ast0.MetaParamList(name,lenname,pure) -> | |
1746 | failwith "metaparamlist not supported" | |
1747 | | _ -> e in | |
1748 | ||
1be43e12 C |
1749 | let whenfn (_,v) = |
1750 | match v with | |
1751 | Ast0.DotsStmtTag(stms) -> Ast0.WhenNot stms | |
1752 | | Ast0.StmtTag(stm) -> Ast0.WhenAlways stm | |
1753 | | Ast0.IsoWhenTTag(stm) -> Ast0.WhenNotTrue stm | |
1754 | | Ast0.IsoWhenFTag(stm) -> Ast0.WhenNotFalse stm | |
1755 | | Ast0.IsoWhenTag(x) -> Ast0.WhenModifier(x) | |
1756 | | _ -> failwith "unexpected binding" in | |
1757 | ||
34e49164 C |
1758 | let stmtfn r k e = |
1759 | let e = k e in | |
1760 | match Ast0.unwrap e with | |
1761 | Ast0.MetaStmt(name,pure) -> | |
b1b2de81 | 1762 | (rebuild_mcode None).VT0.rebuilder_rec_statement |
34e49164 C |
1763 | (match lookup name bindings mv_bindings with |
1764 | Common.Left(Ast0.StmtTag(stm)) -> stm | |
1765 | | Common.Left(_) -> failwith "not possible 1" | |
1766 | | Common.Right(new_mv) -> | |
1767 | Ast0.rewrap e | |
1768 | (Ast0.MetaStmt(Ast0.set_mcode_data new_mv name,pure))) | |
1769 | | Ast0.MetaStmtList(name,pure) -> failwith "metastmtlist not supported" | |
1770 | | Ast0.Dots(d,_) -> | |
1771 | Ast0.rewrap e | |
1772 | (Ast0.Dots | |
1773 | (d, | |
1be43e12 | 1774 | List.map whenfn |
34e49164 C |
1775 | (List.filter (function (x,v) -> x = (dot_term d)) bindings))) |
1776 | | Ast0.Circles(d,_) -> | |
1777 | Ast0.rewrap e | |
1778 | (Ast0.Circles | |
1779 | (d, | |
1be43e12 | 1780 | List.map whenfn |
34e49164 C |
1781 | (List.filter (function (x,v) -> x = (dot_term d)) bindings))) |
1782 | | Ast0.Stars(d,_) -> | |
1783 | Ast0.rewrap e | |
1784 | (Ast0.Stars | |
1785 | (d, | |
1be43e12 | 1786 | List.map whenfn |
34e49164 C |
1787 | (List.filter (function (x,v) -> x = (dot_term d)) bindings))) |
1788 | | _ -> e in | |
1789 | ||
b1b2de81 | 1790 | V0.flat_rebuilder |
34e49164 | 1791 | mcode mcode mcode mcode mcode mcode mcode mcode mcode mcode mcode mcode |
34e49164 | 1792 | (dots elist) donothing (dots plist) (dots slist) donothing donothing |
113803cf | 1793 | identfn exprfn tyfn initfn paramfn declfn stmtfn donothing donothing |
34e49164 C |
1794 | |
1795 | (* --------------------------------------------------------------------- *) | |
1796 | ||
1797 | let is_minus e = | |
1798 | match Ast0.get_mcodekind e with Ast0.MINUS(cell) -> true | _ -> false | |
1799 | ||
1800 | let context_required e = not(is_minus e) && not !Flag.sgrep_mode2 | |
1801 | ||
1802 | let disj_fail bindings e = | |
1803 | match bindings with | |
1804 | Some x -> Printf.fprintf stderr "no disj available at this type"; e | |
1805 | | None -> e | |
1806 | ||
1807 | (* isomorphism code is by default CONTEXT *) | |
1808 | let merge_plus model_mcode e_mcode = | |
1809 | match model_mcode with | |
1810 | Ast0.MINUS(mc) -> | |
1811 | (* add the replacement information at the root *) | |
1812 | (match e_mcode with | |
1813 | Ast0.MINUS(emc) -> | |
1814 | emc := | |
1815 | (match (!mc,!emc) with | |
1816 | (([],_),(x,t)) | ((x,_),([],t)) -> (x,t) | |
1817 | | _ -> failwith "how can we combine minuses?") | |
1818 | | _ -> failwith "not possible 6") | |
1819 | | Ast0.CONTEXT(mc) -> | |
1820 | (match e_mcode with | |
1821 | Ast0.CONTEXT(emc) -> | |
1822 | (* keep the logical line info as in the model *) | |
1823 | let (mba,tb,ta) = !mc in | |
1824 | let (eba,_,_) = !emc in | |
1825 | (* merging may be required when a term is replaced by a subterm *) | |
1826 | let merged = | |
1827 | match (mba,eba) with | |
1828 | (x,Ast.NOTHING) | (Ast.NOTHING,x) -> x | |
951c7801 C |
1829 | | (Ast.BEFORE(b1,it1),Ast.BEFORE(b2,it2)) -> |
1830 | Ast.BEFORE(b1@b2,Ast.lub_count it1 it2) | |
1831 | | (Ast.BEFORE(b,it1),Ast.AFTER(a,it2)) -> | |
1832 | Ast.BEFOREAFTER(b,a,Ast.lub_count it1 it2) | |
1833 | | (Ast.BEFORE(b1,it1),Ast.BEFOREAFTER(b2,a,it2)) -> | |
1834 | Ast.BEFOREAFTER(b1@b2,a,Ast.lub_count it1 it2) | |
1835 | | (Ast.AFTER(a,it1),Ast.BEFORE(b,it2)) -> | |
1836 | Ast.BEFOREAFTER(b,a,Ast.lub_count it1 it2) | |
1837 | | (Ast.AFTER(a1,it1),Ast.AFTER(a2,it2)) -> | |
1838 | Ast.AFTER(a2@a1,Ast.lub_count it1 it2) | |
1839 | | (Ast.AFTER(a1,it1),Ast.BEFOREAFTER(b,a2,it2)) -> | |
1840 | Ast.BEFOREAFTER(b,a2@a1,Ast.lub_count it1 it2) | |
1841 | | (Ast.BEFOREAFTER(b1,a,it1),Ast.BEFORE(b2,it2)) -> | |
1842 | Ast.BEFOREAFTER(b1@b2,a,Ast.lub_count it1 it2) | |
1843 | | (Ast.BEFOREAFTER(b,a1,it1),Ast.AFTER(a2,it2)) -> | |
1844 | Ast.BEFOREAFTER(b,a2@a1,Ast.lub_count it1 it2) | |
1845 | | (Ast.BEFOREAFTER(b1,a1,it1),Ast.BEFOREAFTER(b2,a2,it2)) -> | |
1846 | Ast.BEFOREAFTER(b1@b2,a2@a1,Ast.lub_count it1 it2) in | |
34e49164 C |
1847 | emc := (merged,tb,ta) |
1848 | | Ast0.MINUS(emc) -> | |
1849 | let (anything_bef_aft,_,_) = !mc in | |
1850 | let (anythings,t) = !emc in | |
1851 | emc := | |
1852 | (match anything_bef_aft with | |
951c7801 C |
1853 | Ast.BEFORE(b,_) -> (b@anythings,t) |
1854 | | Ast.AFTER(a,_) -> (anythings@a,t) | |
1855 | | Ast.BEFOREAFTER(b,a,_) -> (b@anythings@a,t) | |
34e49164 | 1856 | | Ast.NOTHING -> (anythings,t)) |
978fd7e5 | 1857 | | Ast0.MIXED(_) -> failwith "how did this become mixed?" |
34e49164 C |
1858 | | _ -> failwith "not possible 7") |
1859 | | Ast0.MIXED(_) -> failwith "not possible 8" | |
951c7801 | 1860 | | Ast0.PLUS _ -> failwith "not possible 9" |
34e49164 C |
1861 | |
1862 | let copy_plus printer minusify model e = | |
1863 | if !Flag.sgrep_mode2 | |
1864 | then e (* no plus code, can cause a "not possible" error, so just avoid it *) | |
1865 | else | |
1866 | let e = | |
1867 | match Ast0.get_mcodekind model with | |
1868 | Ast0.MINUS(mc) -> minusify e | |
1869 | | Ast0.CONTEXT(mc) -> e | |
1870 | | _ -> failwith "not possible: copy_plus\n" in | |
1871 | merge_plus (Ast0.get_mcodekind model) (Ast0.get_mcodekind e); | |
1872 | e | |
1873 | ||
1874 | let copy_minus printer minusify model e = | |
1875 | match Ast0.get_mcodekind model with | |
1876 | Ast0.MINUS(mc) -> minusify e | |
1877 | | Ast0.CONTEXT(mc) -> e | |
1878 | | Ast0.MIXED(_) -> | |
1879 | if !Flag.sgrep_mode2 | |
1880 | then e | |
1881 | else failwith "not possible 8" | |
951c7801 | 1882 | | Ast0.PLUS _ -> failwith "not possible 9" |
34e49164 C |
1883 | |
1884 | let whencode_allowed prev_ecount prev_icount prev_dcount | |
1885 | ecount icount dcount rest = | |
1886 | (* actually, if ecount or dcount is 0, the flag doesn't matter, because it | |
1887 | won't be tested *) | |
1888 | let other_ecount = (* number of edots *) | |
1889 | List.fold_left (function rest -> function (_,ec,ic,dc) -> ec + rest) | |
1890 | prev_ecount rest in | |
1891 | let other_icount = (* number of dots *) | |
1892 | List.fold_left (function rest -> function (_,ec,ic,dc) -> ic + rest) | |
1893 | prev_icount rest in | |
1894 | let other_dcount = (* number of dots *) | |
1895 | List.fold_left (function rest -> function (_,ec,ic,dc) -> dc + rest) | |
1896 | prev_dcount rest in | |
1897 | (ecount = 0 or other_ecount = 0, icount = 0 or other_icount = 0, | |
1898 | dcount = 0 or other_dcount = 0) | |
1899 | ||
1900 | (* copy the befores and afters to the instantiated code *) | |
1901 | let extra_copy_stmt_plus model e = | |
1902 | (if not !Flag.sgrep_mode2 (* sgrep has no plus code, so nothing to do *) | |
1903 | then | |
1904 | (match Ast0.unwrap model with | |
1905 | Ast0.FunDecl((info,bef),_,_,_,_,_,_,_,_) | |
1906 | | Ast0.Decl((info,bef),_) -> | |
1907 | (match Ast0.unwrap e with | |
1908 | Ast0.FunDecl((info,bef1),_,_,_,_,_,_,_,_) | |
1909 | | Ast0.Decl((info,bef1),_) -> | |
1910 | merge_plus bef bef1 | |
1911 | | _ -> merge_plus bef (Ast0.get_mcodekind e)) | |
1912 | | Ast0.IfThen(_,_,_,_,_,(info,aft)) | |
1913 | | Ast0.IfThenElse(_,_,_,_,_,_,_,(info,aft)) | |
1914 | | Ast0.While(_,_,_,_,_,(info,aft)) | |
1915 | | Ast0.For(_,_,_,_,_,_,_,_,_,(info,aft)) | |
1916 | | Ast0.Iterator(_,_,_,_,_,(info,aft)) -> | |
1917 | (match Ast0.unwrap e with | |
1918 | Ast0.IfThen(_,_,_,_,_,(info,aft1)) | |
1919 | | Ast0.IfThenElse(_,_,_,_,_,_,_,(info,aft1)) | |
1920 | | Ast0.While(_,_,_,_,_,(info,aft1)) | |
1921 | | Ast0.For(_,_,_,_,_,_,_,_,_,(info,aft1)) | |
1922 | | Ast0.Iterator(_,_,_,_,_,(info,aft1)) -> | |
1923 | merge_plus aft aft1 | |
1924 | | _ -> merge_plus aft (Ast0.get_mcodekind e)) | |
1925 | | _ -> ())); | |
1926 | e | |
1927 | ||
1928 | let extra_copy_other_plus model e = e | |
1929 | ||
1930 | (* --------------------------------------------------------------------- *) | |
1931 | ||
1932 | let mv_count = ref 0 | |
1933 | let new_mv (_,s) = | |
1934 | let ct = !mv_count in | |
1935 | mv_count := !mv_count + 1; | |
1936 | "_"^s^"_"^(string_of_int ct) | |
1937 | ||
1938 | let get_name = function | |
1939 | Ast.MetaIdDecl(ar,nm) -> | |
1940 | (nm,function nm -> Ast.MetaIdDecl(ar,nm)) | |
b1b2de81 C |
1941 | | Ast.MetaFreshIdDecl(nm,seed) -> |
1942 | (nm,function nm -> Ast.MetaFreshIdDecl(nm,seed)) | |
34e49164 C |
1943 | | Ast.MetaTypeDecl(ar,nm) -> |
1944 | (nm,function nm -> Ast.MetaTypeDecl(ar,nm)) | |
113803cf C |
1945 | | Ast.MetaInitDecl(ar,nm) -> |
1946 | (nm,function nm -> Ast.MetaInitDecl(ar,nm)) | |
34e49164 C |
1947 | | Ast.MetaListlenDecl(nm) -> |
1948 | failwith "should not be rebuilt" | |
1949 | | Ast.MetaParamDecl(ar,nm) -> | |
1950 | (nm,function nm -> Ast.MetaParamDecl(ar,nm)) | |
1951 | | Ast.MetaParamListDecl(ar,nm,nm1) -> | |
1952 | (nm,function nm -> Ast.MetaParamListDecl(ar,nm,nm1)) | |
1953 | | Ast.MetaConstDecl(ar,nm,ty) -> | |
1954 | (nm,function nm -> Ast.MetaConstDecl(ar,nm,ty)) | |
1955 | | Ast.MetaErrDecl(ar,nm) -> | |
1956 | (nm,function nm -> Ast.MetaErrDecl(ar,nm)) | |
1957 | | Ast.MetaExpDecl(ar,nm,ty) -> | |
1958 | (nm,function nm -> Ast.MetaExpDecl(ar,nm,ty)) | |
1959 | | Ast.MetaIdExpDecl(ar,nm,ty) -> | |
1960 | (nm,function nm -> Ast.MetaIdExpDecl(ar,nm,ty)) | |
1961 | | Ast.MetaLocalIdExpDecl(ar,nm,ty) -> | |
1962 | (nm,function nm -> Ast.MetaLocalIdExpDecl(ar,nm,ty)) | |
1963 | | Ast.MetaExpListDecl(ar,nm,nm1) -> | |
1964 | (nm,function nm -> Ast.MetaExpListDecl(ar,nm,nm1)) | |
1965 | | Ast.MetaStmDecl(ar,nm) -> | |
1966 | (nm,function nm -> Ast.MetaStmDecl(ar,nm)) | |
1967 | | Ast.MetaStmListDecl(ar,nm) -> | |
1968 | (nm,function nm -> Ast.MetaStmListDecl(ar,nm)) | |
1969 | | Ast.MetaFuncDecl(ar,nm) -> | |
1970 | (nm,function nm -> Ast.MetaFuncDecl(ar,nm)) | |
1971 | | Ast.MetaLocalFuncDecl(ar,nm) -> | |
1972 | (nm,function nm -> Ast.MetaLocalFuncDecl(ar,nm)) | |
1973 | | Ast.MetaPosDecl(ar,nm) -> | |
1974 | (nm,function nm -> Ast.MetaPosDecl(ar,nm)) | |
1975 | | Ast.MetaDeclarerDecl(ar,nm) -> | |
1976 | (nm,function nm -> Ast.MetaDeclarerDecl(ar,nm)) | |
1977 | | Ast.MetaIteratorDecl(ar,nm) -> | |
1978 | (nm,function nm -> Ast.MetaIteratorDecl(ar,nm)) | |
1979 | ||
1980 | let make_new_metavars metavars bindings = | |
1981 | let new_metavars = | |
1982 | List.filter | |
1983 | (function mv -> | |
1984 | let (s,_) = get_name mv in | |
1985 | try let _ = List.assoc s bindings in false with Not_found -> true) | |
1986 | metavars in | |
1987 | List.split | |
1988 | (List.map | |
1989 | (function mv -> | |
1990 | let (s,rebuild) = get_name mv in | |
1991 | let new_s = (!current_rule,new_mv s) in | |
1992 | (rebuild new_s, (s,new_s))) | |
1993 | new_metavars) | |
1994 | ||
1995 | (* --------------------------------------------------------------------- *) | |
1996 | ||
1997 | let do_nothing x = x | |
1998 | ||
1999 | let mkdisj matcher metavars alts e instantiater mkiso disj_maker minusify | |
2000 | rebuild_mcodes name printer extra_plus update_others = | |
2001 | let call_instantiate bindings mv_bindings alts = | |
2002 | List.concat | |
2003 | (List.map | |
2004 | (function (a,_,_,_) -> | |
2005 | nub | |
2006 | (* no need to create duplicates when the bindings have no effect *) | |
2007 | (List.map | |
2008 | (function bindings -> | |
2009 | Ast0.set_iso | |
2010 | (copy_plus printer minusify e | |
2011 | (extra_plus e | |
2012 | (instantiater bindings mv_bindings | |
2013 | (rebuild_mcodes a)))) | |
b1b2de81 | 2014 | ((name,mkiso a)::(Ast0.get_iso e))) (* keep count, not U *) |
34e49164 C |
2015 | bindings)) |
2016 | alts) in | |
2017 | let rec inner_loop all_alts prev_ecount prev_icount prev_dcount = function | |
2018 | [] -> Common.Left (prev_ecount, prev_icount, prev_dcount) | |
2019 | | ((pattern,ecount,icount,dcount)::rest) -> | |
2020 | let wc = | |
2021 | whencode_allowed prev_ecount prev_icount prev_dcount | |
2022 | ecount dcount icount rest in | |
2023 | (match matcher true (context_required e) wc pattern e init_env with | |
2024 | Fail(reason) -> | |
2025 | if reason = NonMatch || not !Flag_parsing_cocci.show_iso_failures | |
2026 | then () | |
2027 | else | |
2028 | (match matcher false false wc pattern e init_env with | |
2029 | OK _ -> | |
2030 | interpret_reason name (Ast0.get_line e) reason | |
2031 | (function () -> printer e) | |
2032 | | _ -> ()); | |
2033 | inner_loop all_alts (prev_ecount + ecount) (prev_icount + icount) | |
2034 | (prev_dcount + dcount) rest | |
2035 | | OK (bindings : (((string * string) * 'a) list list)) -> | |
2036 | let all_alts = | |
2037 | (* apply update_others to all patterns other than the matched | |
2038 | one. This is used to desigate the others as test | |
2039 | expressions in the TestExpression case *) | |
2040 | (List.map | |
2041 | (function (x,e,i,d) as all -> | |
2042 | if x = pattern | |
2043 | then all | |
2044 | else (update_others x,e,i,d)) | |
2045 | (List.hd all_alts)) :: | |
2046 | (List.map | |
2047 | (List.map (function (x,e,i,d) -> (update_others x,e,i,d))) | |
2048 | (List.tl all_alts)) in | |
2049 | (match List.concat all_alts with | |
2050 | [x] -> Common.Left (prev_ecount, prev_icount, prev_dcount) | |
2051 | | all_alts -> | |
2052 | let (new_metavars,mv_bindings) = | |
2053 | make_new_metavars metavars (nub(List.concat bindings)) in | |
2054 | Common.Right | |
2055 | (new_metavars, | |
2056 | call_instantiate bindings mv_bindings all_alts))) in | |
2057 | let rec outer_loop prev_ecount prev_icount prev_dcount = function | |
b1b2de81 | 2058 | [] | [[_]] (*only one alternative*) -> (0,[],e) (* nothing matched *) |
34e49164 C |
2059 | | (alts::rest) as all_alts -> |
2060 | match inner_loop all_alts prev_ecount prev_icount prev_dcount alts with | |
2061 | Common.Left(prev_ecount, prev_icount, prev_dcount) -> | |
2062 | outer_loop prev_ecount prev_icount prev_dcount rest | |
2063 | | Common.Right (new_metavars,res) -> | |
b1b2de81 | 2064 | (1,new_metavars, |
34e49164 | 2065 | copy_minus printer minusify e (disj_maker res)) in |
b1b2de81 C |
2066 | let (count,metavars,e) = outer_loop 0 0 0 alts in |
2067 | (count, metavars, e) | |
34e49164 C |
2068 | |
2069 | (* no one should ever look at the information stored in these mcodes *) | |
2070 | let disj_starter lst = | |
2071 | let old_info = Ast0.get_info(List.hd lst) in | |
0708f913 C |
2072 | let new_pos_info = |
2073 | { old_info.Ast0.pos_info with | |
2074 | Ast0.line_end = old_info.Ast0.pos_info.Ast0.line_start; | |
2075 | Ast0.logical_end = old_info.Ast0.pos_info.Ast0.logical_start; } in | |
34e49164 | 2076 | let info = |
0708f913 | 2077 | { Ast0.pos_info = new_pos_info; |
34e49164 C |
2078 | Ast0.attachable_start = false; Ast0.attachable_end = false; |
2079 | Ast0.mcode_start = []; Ast0.mcode_end = []; | |
2080 | Ast0.strings_before = []; Ast0.strings_after = [] } in | |
2081 | Ast0.make_mcode_info "(" info | |
2082 | ||
2083 | let disj_ender lst = | |
2084 | let old_info = Ast0.get_info(List.hd lst) in | |
0708f913 C |
2085 | let new_pos_info = |
2086 | { old_info.Ast0.pos_info with | |
2087 | Ast0.line_start = old_info.Ast0.pos_info.Ast0.line_end; | |
2088 | Ast0.logical_start = old_info.Ast0.pos_info.Ast0.logical_end; } in | |
34e49164 | 2089 | let info = |
0708f913 | 2090 | { Ast0.pos_info = new_pos_info; |
34e49164 C |
2091 | Ast0.attachable_start = false; Ast0.attachable_end = false; |
2092 | Ast0.mcode_start = []; Ast0.mcode_end = []; | |
2093 | Ast0.strings_before = []; Ast0.strings_after = [] } in | |
2094 | Ast0.make_mcode_info ")" info | |
2095 | ||
2096 | let disj_mid _ = Ast0.make_mcode "|" | |
2097 | ||
2098 | let make_disj_type tl = | |
2099 | let mids = | |
2100 | match tl with | |
2101 | [] -> failwith "bad disjunction" | |
2102 | | x::xs -> List.map disj_mid xs in | |
2103 | Ast0.context_wrap (Ast0.DisjType(disj_starter tl,tl,mids,disj_ender tl)) | |
2104 | let make_disj_stmt_list tl = | |
2105 | let mids = | |
2106 | match tl with | |
2107 | [] -> failwith "bad disjunction" | |
2108 | | x::xs -> List.map disj_mid xs in | |
2109 | Ast0.context_wrap (Ast0.Disj(disj_starter tl,tl,mids,disj_ender tl)) | |
2110 | let make_disj_expr model el = | |
2111 | let mids = | |
2112 | match el with | |
2113 | [] -> failwith "bad disjunction" | |
2114 | | x::xs -> List.map disj_mid xs in | |
2115 | let update_arg x = | |
2116 | if Ast0.get_arg_exp model then Ast0.set_arg_exp x else x in | |
2117 | let update_test x = | |
2118 | let x = if Ast0.get_test_pos model then Ast0.set_test_pos x else x in | |
2119 | if Ast0.get_test_exp model then Ast0.set_test_exp x else x in | |
2120 | let el = List.map update_arg (List.map update_test el) in | |
2121 | Ast0.context_wrap (Ast0.DisjExpr(disj_starter el,el,mids,disj_ender el)) | |
2122 | let make_disj_decl dl = | |
2123 | let mids = | |
2124 | match dl with | |
2125 | [] -> failwith "bad disjunction" | |
2126 | | x::xs -> List.map disj_mid xs in | |
2127 | Ast0.context_wrap (Ast0.DisjDecl(disj_starter dl,dl,mids,disj_ender dl)) | |
2128 | let make_disj_stmt sl = | |
2129 | let dotify x = Ast0.context_wrap (Ast0.DOTS[x]) in | |
2130 | let mids = | |
2131 | match sl with | |
2132 | [] -> failwith "bad disjunction" | |
2133 | | x::xs -> List.map disj_mid xs in | |
2134 | Ast0.context_wrap | |
2135 | (Ast0.Disj(disj_starter sl,List.map dotify sl,mids,disj_ender sl)) | |
2136 | ||
2137 | let transform_type (metavars,alts,name) e = | |
2138 | match alts with | |
2139 | (Ast0.TypeCTag(_)::_)::_ -> | |
2140 | (* start line is given to any leaves in the iso code *) | |
0708f913 C |
2141 | let start_line = |
2142 | Some ((Ast0.get_info e).Ast0.pos_info.Ast0.line_start) in | |
34e49164 C |
2143 | let alts = |
2144 | List.map | |
2145 | (List.map | |
2146 | (function | |
2147 | Ast0.TypeCTag(p) -> | |
b1b2de81 C |
2148 | (p,count_edots.VT0.combiner_rec_typeC p, |
2149 | count_idots.VT0.combiner_rec_typeC p, | |
2150 | count_dots.VT0.combiner_rec_typeC p) | |
34e49164 C |
2151 | | _ -> failwith "invalid alt")) |
2152 | alts in | |
2153 | mkdisj match_typeC metavars alts e | |
2154 | (function b -> function mv_b -> | |
b1b2de81 | 2155 | (instantiate b mv_b).VT0.rebuilder_rec_typeC) |
34e49164 | 2156 | (function t -> Ast0.TypeCTag t) |
b1b2de81 C |
2157 | make_disj_type make_minus.VT0.rebuilder_rec_typeC |
2158 | (rebuild_mcode start_line).VT0.rebuilder_rec_typeC | |
34e49164 | 2159 | name Unparse_ast0.typeC extra_copy_other_plus do_nothing |
b1b2de81 | 2160 | | _ -> (0,[],e) |
34e49164 C |
2161 | |
2162 | ||
2163 | let transform_expr (metavars,alts,name) e = | |
2164 | let process update_others = | |
2165 | (* start line is given to any leaves in the iso code *) | |
0708f913 C |
2166 | let start_line = |
2167 | Some ((Ast0.get_info e).Ast0.pos_info.Ast0.line_start) in | |
34e49164 C |
2168 | let alts = |
2169 | List.map | |
2170 | (List.map | |
2171 | (function | |
2172 | Ast0.ExprTag(p) | Ast0.ArgExprTag(p) | Ast0.TestExprTag(p) -> | |
b1b2de81 C |
2173 | (p,count_edots.VT0.combiner_rec_expression p, |
2174 | count_idots.VT0.combiner_rec_expression p, | |
2175 | count_dots.VT0.combiner_rec_expression p) | |
34e49164 C |
2176 | | _ -> failwith "invalid alt")) |
2177 | alts in | |
2178 | mkdisj match_expr metavars alts e | |
2179 | (function b -> function mv_b -> | |
b1b2de81 | 2180 | (instantiate b mv_b).VT0.rebuilder_rec_expression) |
34e49164 | 2181 | (function e -> Ast0.ExprTag e) |
485bce71 | 2182 | (make_disj_expr e) |
b1b2de81 C |
2183 | make_minus.VT0.rebuilder_rec_expression |
2184 | (rebuild_mcode start_line).VT0.rebuilder_rec_expression | |
34e49164 | 2185 | name Unparse_ast0.expression extra_copy_other_plus update_others in |
7f004419 C |
2186 | let set_property model e = |
2187 | let e = if Ast0.get_test_pos model then Ast0.set_test_exp e else e in | |
2188 | if Ast0.get_arg_exp model then Ast0.set_arg_exp e else e in | |
34e49164 | 2189 | match alts with |
7f004419 C |
2190 | (Ast0.ExprTag(_)::_)::_ -> |
2191 | process (set_property e) | |
2192 | | (Ast0.ArgExprTag(_)::_)::_ when Ast0.get_arg_exp e -> | |
2193 | process (set_property e) | |
34e49164 | 2194 | | (Ast0.TestExprTag(_)::_)::_ when Ast0.get_test_pos e -> |
7f004419 | 2195 | process (set_property e) |
b1b2de81 | 2196 | | _ -> (0,[],e) |
34e49164 C |
2197 | |
2198 | let transform_decl (metavars,alts,name) e = | |
2199 | match alts with | |
2200 | (Ast0.DeclTag(_)::_)::_ -> | |
2201 | (* start line is given to any leaves in the iso code *) | |
0708f913 C |
2202 | let start_line = |
2203 | Some (Ast0.get_info e).Ast0.pos_info.Ast0.line_start in | |
34e49164 C |
2204 | let alts = |
2205 | List.map | |
2206 | (List.map | |
2207 | (function | |
2208 | Ast0.DeclTag(p) -> | |
b1b2de81 C |
2209 | (p,count_edots.VT0.combiner_rec_declaration p, |
2210 | count_idots.VT0.combiner_rec_declaration p, | |
2211 | count_dots.VT0.combiner_rec_declaration p) | |
34e49164 C |
2212 | | _ -> failwith "invalid alt")) |
2213 | alts in | |
2214 | mkdisj match_decl metavars alts e | |
2215 | (function b -> function mv_b -> | |
b1b2de81 | 2216 | (instantiate b mv_b).VT0.rebuilder_rec_declaration) |
34e49164 C |
2217 | (function d -> Ast0.DeclTag d) |
2218 | make_disj_decl | |
b1b2de81 C |
2219 | make_minus.VT0.rebuilder_rec_declaration |
2220 | (rebuild_mcode start_line).VT0.rebuilder_rec_declaration | |
34e49164 | 2221 | name Unparse_ast0.declaration extra_copy_other_plus do_nothing |
b1b2de81 | 2222 | | _ -> (0,[],e) |
34e49164 C |
2223 | |
2224 | let transform_stmt (metavars,alts,name) e = | |
2225 | match alts with | |
2226 | (Ast0.StmtTag(_)::_)::_ -> | |
2227 | (* start line is given to any leaves in the iso code *) | |
0708f913 C |
2228 | let start_line = |
2229 | Some (Ast0.get_info e).Ast0.pos_info.Ast0.line_start in | |
34e49164 C |
2230 | let alts = |
2231 | List.map | |
2232 | (List.map | |
2233 | (function | |
2234 | Ast0.StmtTag(p) -> | |
b1b2de81 C |
2235 | (p,count_edots.VT0.combiner_rec_statement p, |
2236 | count_idots.VT0.combiner_rec_statement p, | |
2237 | count_dots.VT0.combiner_rec_statement p) | |
34e49164 C |
2238 | | _ -> failwith "invalid alt")) |
2239 | alts in | |
2240 | mkdisj match_statement metavars alts e | |
2241 | (function b -> function mv_b -> | |
b1b2de81 | 2242 | (instantiate b mv_b).VT0.rebuilder_rec_statement) |
34e49164 | 2243 | (function s -> Ast0.StmtTag s) |
b1b2de81 C |
2244 | make_disj_stmt make_minus.VT0.rebuilder_rec_statement |
2245 | (rebuild_mcode start_line).VT0.rebuilder_rec_statement | |
34e49164 | 2246 | name (Unparse_ast0.statement "") extra_copy_stmt_plus do_nothing |
b1b2de81 | 2247 | | _ -> (0,[],e) |
34e49164 C |
2248 | |
2249 | (* sort of a hack, because there is no disj at top level *) | |
2250 | let transform_top (metavars,alts,name) e = | |
2251 | match Ast0.unwrap e with | |
2252 | Ast0.DECL(declstm) -> | |
2253 | (try | |
2254 | let strip alts = | |
2255 | List.map | |
2256 | (List.map | |
2257 | (function | |
2258 | Ast0.DotsStmtTag(d) -> | |
2259 | (match Ast0.unwrap d with | |
2260 | Ast0.DOTS([s]) -> Ast0.StmtTag(s) | |
2261 | | _ -> raise (Failure "")) | |
2262 | | _ -> raise (Failure ""))) | |
2263 | alts in | |
b1b2de81 C |
2264 | let (count,mv,s) = transform_stmt (metavars,strip alts,name) declstm in |
2265 | (count,mv,Ast0.rewrap e (Ast0.DECL(s))) | |
2266 | with Failure _ -> (0,[],e)) | |
34e49164 | 2267 | | Ast0.CODE(stmts) -> |
b1b2de81 | 2268 | let (count,mv,res) = |
34e49164 C |
2269 | match alts with |
2270 | (Ast0.DotsStmtTag(_)::_)::_ -> | |
2271 | (* start line is given to any leaves in the iso code *) | |
0708f913 C |
2272 | let start_line = |
2273 | Some ((Ast0.get_info e).Ast0.pos_info.Ast0.line_start) in | |
34e49164 C |
2274 | let alts = |
2275 | List.map | |
2276 | (List.map | |
2277 | (function | |
2278 | Ast0.DotsStmtTag(p) -> | |
b1b2de81 C |
2279 | (p,count_edots.VT0.combiner_rec_statement_dots p, |
2280 | count_idots.VT0.combiner_rec_statement_dots p, | |
2281 | count_dots.VT0.combiner_rec_statement_dots p) | |
34e49164 C |
2282 | | _ -> failwith "invalid alt")) |
2283 | alts in | |
2284 | mkdisj match_statement_dots metavars alts stmts | |
2285 | (function b -> function mv_b -> | |
b1b2de81 | 2286 | (instantiate b mv_b).VT0.rebuilder_rec_statement_dots) |
34e49164 C |
2287 | (function s -> Ast0.DotsStmtTag s) |
2288 | (function x -> | |
2289 | Ast0.rewrap e (Ast0.DOTS([make_disj_stmt_list x]))) | |
485bce71 | 2290 | (function x -> |
b1b2de81 C |
2291 | make_minus.VT0.rebuilder_rec_statement_dots x) |
2292 | (rebuild_mcode start_line).VT0.rebuilder_rec_statement_dots | |
34e49164 | 2293 | name Unparse_ast0.statement_dots extra_copy_other_plus do_nothing |
b1b2de81 C |
2294 | | _ -> (0,[],stmts) in |
2295 | (count,mv,Ast0.rewrap e (Ast0.CODE res)) | |
2296 | | _ -> (0,[],e) | |
34e49164 C |
2297 | |
2298 | (* --------------------------------------------------------------------- *) | |
2299 | ||
2300 | let transform (alts : isomorphism) t = | |
2301 | (* the following ugliness is because rebuilder only returns a new term *) | |
2302 | let extra_meta_decls = ref ([] : Ast_cocci.metavar list) in | |
b1b2de81 C |
2303 | let in_limit n = function |
2304 | None -> true | |
2305 | | Some n1 -> | |
2306 | n < n1 or | |
2307 | ((if !Flag_parsing_cocci.show_iso_failures | |
2308 | then Common.pr2_once "execeeded iso threshold, see -iso_limit option"); | |
2309 | false) in | |
2310 | let bind x y = x + y in | |
2311 | let option_default = 0 in | |
34e49164 | 2312 | let exprfn r k e = |
b1b2de81 C |
2313 | let (e_count,e) = k e in |
2314 | if in_limit e_count !Flag_parsing_cocci.iso_limit | |
2315 | then | |
2316 | let (count,extra_meta,exp) = transform_expr alts e in | |
2317 | extra_meta_decls := extra_meta @ !extra_meta_decls; | |
2318 | (bind count e_count,exp) | |
2319 | else (e_count,e) in | |
34e49164 C |
2320 | |
2321 | let declfn r k e = | |
b1b2de81 C |
2322 | let (e_count,e) = k e in |
2323 | if in_limit e_count !Flag_parsing_cocci.iso_limit | |
2324 | then | |
2325 | let (count,extra_meta,dec) = transform_decl alts e in | |
2326 | extra_meta_decls := extra_meta @ !extra_meta_decls; | |
2327 | (bind count e_count,dec) | |
2328 | else (e_count,e) in | |
34e49164 C |
2329 | |
2330 | let stmtfn r k e = | |
b1b2de81 C |
2331 | let (e_count,e) = k e in |
2332 | if in_limit e_count !Flag_parsing_cocci.iso_limit | |
2333 | then | |
2334 | let (count,extra_meta,stm) = transform_stmt alts e in | |
2335 | extra_meta_decls := extra_meta @ !extra_meta_decls; | |
2336 | (bind count e_count,stm) | |
2337 | else (e_count,e) in | |
faf9a90c | 2338 | |
34e49164 | 2339 | let typefn r k e = |
b1b2de81 C |
2340 | let (continue,e_count,e) = |
2341 | match Ast0.unwrap e with | |
2342 | Ast0.Signed(signb,tyb) -> | |
faf9a90c C |
2343 | (* Hack! How else to prevent iso from applying under an |
2344 | unsigned??? *) | |
b1b2de81 C |
2345 | (true,0,e) |
2346 | | _ -> | |
2347 | let (e_count,e) = k e in | |
2348 | if in_limit e_count !Flag_parsing_cocci.iso_limit | |
2349 | then (true,e_count,e) | |
2350 | else (false,e_count,e) in | |
2351 | if continue | |
2352 | then | |
2353 | let (count,extra_meta,ty) = transform_type alts e in | |
2354 | extra_meta_decls := extra_meta @ !extra_meta_decls; | |
2355 | (bind count e_count,ty) | |
2356 | else (e_count,e) in | |
faf9a90c | 2357 | |
34e49164 | 2358 | let topfn r k e = |
b1b2de81 C |
2359 | let (e_count,e) = k e in |
2360 | if in_limit e_count !Flag_parsing_cocci.iso_limit | |
2361 | then | |
2362 | let (count,extra_meta,ty) = transform_top alts e in | |
2363 | extra_meta_decls := extra_meta @ !extra_meta_decls; | |
2364 | (bind count e_count,ty) | |
2365 | else (e_count,e) in | |
faf9a90c | 2366 | |
34e49164 | 2367 | let res = |
b1b2de81 C |
2368 | V0.combiner_rebuilder bind option_default |
2369 | {V0.combiner_rebuilder_functions with | |
2370 | VT0.combiner_rebuilder_exprfn = exprfn; | |
2371 | VT0.combiner_rebuilder_tyfn = typefn; | |
2372 | VT0.combiner_rebuilder_declfn = declfn; | |
2373 | VT0.combiner_rebuilder_stmtfn = stmtfn; | |
2374 | VT0.combiner_rebuilder_topfn = topfn} in | |
2375 | let (_,res) = res.VT0.top_level t in | |
34e49164 C |
2376 | (!extra_meta_decls,res) |
2377 | ||
2378 | (* --------------------------------------------------------------------- *) | |
2379 | ||
2380 | (* should be done by functorizing the parser to use wrap or context_wrap *) | |
2381 | let rewrap = | |
708f4980 | 2382 | let mcode (x,a,i,mc,pos,adj) = (x,a,i,Ast0.context_befaft(),pos,adj) in |
34e49164 | 2383 | let donothing r k e = Ast0.context_wrap(Ast0.unwrap(k e)) in |
b1b2de81 | 2384 | V0.flat_rebuilder |
34e49164 | 2385 | mcode mcode mcode mcode mcode mcode mcode mcode mcode mcode mcode mcode |
34e49164 C |
2386 | donothing donothing donothing donothing donothing donothing |
2387 | donothing donothing donothing donothing donothing donothing donothing | |
2388 | donothing donothing | |
2389 | ||
2390 | let rewrap_anything = function | |
2391 | Ast0.DotsExprTag(d) -> | |
b1b2de81 | 2392 | Ast0.DotsExprTag(rewrap.VT0.rebuilder_rec_expression_dots d) |
34e49164 | 2393 | | Ast0.DotsInitTag(d) -> |
b1b2de81 | 2394 | Ast0.DotsInitTag(rewrap.VT0.rebuilder_rec_initialiser_list d) |
34e49164 | 2395 | | Ast0.DotsParamTag(d) -> |
b1b2de81 | 2396 | Ast0.DotsParamTag(rewrap.VT0.rebuilder_rec_parameter_list d) |
34e49164 | 2397 | | Ast0.DotsStmtTag(d) -> |
b1b2de81 | 2398 | Ast0.DotsStmtTag(rewrap.VT0.rebuilder_rec_statement_dots d) |
34e49164 | 2399 | | Ast0.DotsDeclTag(d) -> |
b1b2de81 | 2400 | Ast0.DotsDeclTag(rewrap.VT0.rebuilder_rec_declaration_dots d) |
34e49164 | 2401 | | Ast0.DotsCaseTag(d) -> |
b1b2de81 C |
2402 | Ast0.DotsCaseTag(rewrap.VT0.rebuilder_rec_case_line_dots d) |
2403 | | Ast0.IdentTag(d) -> Ast0.IdentTag(rewrap.VT0.rebuilder_rec_ident d) | |
2404 | | Ast0.ExprTag(d) -> Ast0.ExprTag(rewrap.VT0.rebuilder_rec_expression d) | |
2405 | | Ast0.ArgExprTag(d) -> | |
2406 | Ast0.ArgExprTag(rewrap.VT0.rebuilder_rec_expression d) | |
2407 | | Ast0.TestExprTag(d) -> | |
2408 | Ast0.TestExprTag(rewrap.VT0.rebuilder_rec_expression d) | |
2409 | | Ast0.TypeCTag(d) -> Ast0.TypeCTag(rewrap.VT0.rebuilder_rec_typeC d) | |
2410 | | Ast0.InitTag(d) -> Ast0.InitTag(rewrap.VT0.rebuilder_rec_initialiser d) | |
2411 | | Ast0.ParamTag(d) -> Ast0.ParamTag(rewrap.VT0.rebuilder_rec_parameter d) | |
2412 | | Ast0.DeclTag(d) -> Ast0.DeclTag(rewrap.VT0.rebuilder_rec_declaration d) | |
2413 | | Ast0.StmtTag(d) -> Ast0.StmtTag(rewrap.VT0.rebuilder_rec_statement d) | |
2414 | | Ast0.CaseLineTag(d) -> | |
2415 | Ast0.CaseLineTag(rewrap.VT0.rebuilder_rec_case_line d) | |
2416 | | Ast0.TopTag(d) -> Ast0.TopTag(rewrap.VT0.rebuilder_rec_top_level d) | |
1be43e12 C |
2417 | | Ast0.IsoWhenTag(_) | Ast0.IsoWhenTTag(_) | Ast0.IsoWhenFTag(_) -> |
2418 | failwith "only for isos within iso phase" | |
34e49164 C |
2419 | | Ast0.MetaPosTag(p) -> Ast0.MetaPosTag(p) |
2420 | ||
2421 | (* --------------------------------------------------------------------- *) | |
2422 | ||
2423 | let apply_isos isos rule rule_name = | |
2424 | if isos = [] | |
2425 | then ([],rule) | |
2426 | else | |
2427 | begin | |
2428 | current_rule := rule_name; | |
2429 | let isos = | |
2430 | List.map | |
2431 | (function (metavars,iso,name) -> | |
2432 | (metavars,List.map (List.map rewrap_anything) iso,name)) | |
2433 | isos in | |
2434 | let (extra_meta,rule) = | |
2435 | List.split | |
2436 | (List.map | |
2437 | (function t -> | |
2438 | List.fold_left | |
2439 | (function (extra_meta,t) -> function iso -> | |
2440 | let (new_extra_meta,t) = transform iso t in | |
2441 | (new_extra_meta@extra_meta,t)) | |
2442 | ([],t) isos) | |
2443 | rule) in | |
978fd7e5 | 2444 | (List.concat extra_meta, (Compute_lines.compute_lines true) rule) |
34e49164 | 2445 | end |