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34e49164 | 1 | (* |
faf9a90c | 2 | * Copyright 2005-2009, Ecole des Mines de Nantes, University of Copenhagen |
34e49164 C |
3 | * Yoann Padioleau, Julia Lawall, Rene Rydhof Hansen, Henrik Stuart, Gilles Muller |
4 | * This file is part of Coccinelle. | |
5 | * | |
6 | * Coccinelle is free software: you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation, according to version 2 of the License. | |
9 | * | |
10 | * Coccinelle is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with Coccinelle. If not, see <http://www.gnu.org/licenses/>. | |
17 | * | |
18 | * The authors reserve the right to distribute this or future versions of | |
19 | * Coccinelle under other licenses. | |
20 | *) | |
21 | ||
22 | ||
23 | (* For minus fragment, checks that all of the identifier metavariables that | |
24 | are used are not declared as fresh, and check that all declared variables | |
25 | are used. For plus fragment, just check that the variables declared as | |
26 | fresh are used. What is the issue about error variables? (don't remember) *) | |
27 | ||
28 | module Ast0 = Ast0_cocci | |
29 | module Ast = Ast_cocci | |
30 | module V0 = Visitor_ast0 | |
b1b2de81 | 31 | module VT0 = Visitor_ast0_types |
34e49164 C |
32 | |
33 | (* all fresh identifiers *) | |
34 | let fresh_table = (Hashtbl.create(50) : ((string * string), unit) Hashtbl.t) | |
35 | ||
36 | let warning s = Printf.fprintf stderr "warning: %s\n" s | |
37 | ||
708f4980 | 38 | let promote name = (name,(),Ast0.default_info(),(),None,-1) |
34e49164 C |
39 | |
40 | (* --------------------------------------------------------------------- *) | |
41 | ||
42 | let find_loop table name = | |
43 | let rec loop = function | |
44 | [] -> raise Not_found | |
45 | | x::xs -> (try Hashtbl.find x name with Not_found -> loop xs) in | |
46 | loop table | |
47 | ||
708f4980 | 48 | let check_table table minus (name,_,info,_,_,_) = |
0708f913 | 49 | let rl = info.Ast0.pos_info.Ast0.line_start in |
34e49164 C |
50 | if minus |
51 | then | |
52 | (try (find_loop table name) := true | |
53 | with | |
54 | Not_found -> | |
55 | (try | |
56 | Hashtbl.find fresh_table name; | |
57 | let (_,name) = name in | |
58 | failwith | |
59 | (Printf.sprintf | |
60 | "%d: unexpected use of a fresh identifier %s" rl name) | |
61 | with Not_found -> ())) | |
62 | else (try (find_loop table name) := true with Not_found -> ()) | |
63 | ||
64 | let get_opt fn = Common.do_option fn | |
65 | ||
66 | (* --------------------------------------------------------------------- *) | |
67 | (* Dots *) | |
68 | ||
69 | let dots fn d = | |
70 | match Ast0.unwrap d with | |
71 | Ast0.DOTS(x) -> List.iter fn x | |
72 | | Ast0.CIRCLES(x) -> List.iter fn x | |
73 | | Ast0.STARS(x) -> List.iter fn x | |
74 | ||
75 | (* --------------------------------------------------------------------- *) | |
76 | (* Identifier *) | |
77 | ||
78 | type context = ID | FIELD | FN | GLOBAL | |
79 | ||
80 | (* heuristic for distinguishing ifdef variables from undeclared metavariables*) | |
81 | let is_ifdef name = | |
82 | String.length name > 2 && String.uppercase name = name | |
83 | ||
84 | let ident context old_metas table minus i = | |
85 | match Ast0.unwrap i with | |
708f4980 | 86 | Ast0.Id((name,_,info,_,_,_) : string Ast0.mcode) -> |
0708f913 | 87 | let rl = info.Ast0.pos_info.Ast0.line_start in |
34e49164 C |
88 | let err = |
89 | if List.exists (function x -> x = name) old_metas | |
90 | && (minus || Ast0.get_mcodekind i = Ast0.PLUS) | |
91 | then | |
92 | begin | |
93 | warning | |
94 | (Printf.sprintf | |
95 | "line %d: %s, previously declared as a metavariable, is used as an identifier" rl name); | |
96 | true | |
97 | end | |
98 | else false in | |
99 | (match context with | |
100 | ID -> | |
101 | if not (is_ifdef name) && minus && not err(* warn only once per id *) | |
102 | then | |
103 | warning | |
104 | (Printf.sprintf "line %d: should %s be a metavariable?" rl name) | |
105 | | _ -> ()) | |
106 | | Ast0.MetaId(name,_,_) -> check_table table minus name | |
107 | | Ast0.MetaFunc(name,_,_) -> check_table table minus name | |
108 | | Ast0.MetaLocalFunc(name,_,_) -> check_table table minus name | |
109 | | Ast0.OptIdent(_) | Ast0.UniqueIdent(_) -> | |
110 | failwith "unexpected code" | |
111 | ||
112 | (* --------------------------------------------------------------------- *) | |
113 | (* Expression *) | |
114 | ||
115 | let rec expression context old_metas table minus e = | |
116 | match Ast0.unwrap e with | |
117 | Ast0.Ident(id) -> | |
118 | ident context old_metas table minus id | |
119 | | Ast0.FunCall(fn,lp,args,rp) -> | |
120 | expression FN old_metas table minus fn; | |
121 | dots (expression ID old_metas table minus) args | |
122 | | Ast0.Assignment(left,op,right,_) -> | |
123 | expression context old_metas table minus left; | |
124 | expression ID old_metas table minus right | |
125 | | Ast0.CondExpr(exp1,why,exp2,colon,exp3) -> | |
126 | expression ID old_metas table minus exp1; | |
127 | get_opt (expression ID old_metas table minus) exp2; | |
128 | expression ID old_metas table minus exp3 | |
129 | | Ast0.Postfix(exp,op) -> | |
130 | expression ID old_metas table minus exp | |
131 | | Ast0.Infix(exp,op) -> | |
132 | expression ID old_metas table minus exp | |
133 | | Ast0.Unary(exp,op) -> | |
134 | expression ID old_metas table minus exp | |
135 | | Ast0.Binary(left,op,right) -> | |
136 | expression ID old_metas table minus left; | |
137 | expression ID old_metas table minus right | |
138 | | Ast0.Paren(lp,exp,rp) -> | |
139 | expression ID old_metas table minus exp | |
140 | | Ast0.ArrayAccess(exp1,lb,exp2,rb) -> | |
141 | expression ID old_metas table minus exp1; | |
142 | expression ID old_metas table minus exp2 | |
143 | | Ast0.RecordAccess(exp,pt,field) -> | |
144 | expression ID old_metas table minus exp; | |
145 | ident FIELD old_metas table minus field | |
146 | | Ast0.RecordPtAccess(exp,ar,field) -> | |
147 | expression ID old_metas table minus exp; | |
148 | ident FIELD old_metas table minus field | |
149 | | Ast0.Cast(lp,ty,rp,exp) -> | |
150 | typeC old_metas table minus ty; expression ID old_metas table minus exp | |
151 | | Ast0.SizeOfExpr(szf,exp) -> expression ID old_metas table minus exp | |
152 | | Ast0.SizeOfType(szf,lp,ty,rp) -> typeC old_metas table minus ty | |
153 | | Ast0.TypeExp(ty) -> typeC old_metas table minus ty | |
154 | | Ast0.MetaExpr(name,_,Some tys,_,_) -> | |
155 | List.iter | |
156 | (function x -> | |
157 | match get_type_name x with | |
158 | Some(ty) -> check_table table minus (promote ty) | |
159 | | None -> ()) | |
160 | tys; | |
161 | check_table table minus name | |
162 | | Ast0.MetaExpr(name,_,_,_,_) | Ast0.MetaErr(name,_,_) -> | |
163 | check_table table minus name | |
164 | | Ast0.MetaExprList(name,None,_) -> | |
165 | check_table table minus name | |
166 | | Ast0.MetaExprList(name,Some lenname,_) -> | |
167 | check_table table minus name; | |
168 | check_table table minus lenname | |
169 | | Ast0.DisjExpr(_,exps,_,_) -> | |
0708f913 | 170 | List.iter (expression context old_metas table minus) exps |
34e49164 C |
171 | | Ast0.NestExpr(_,exp_dots,_,w,_) -> |
172 | dots (expression ID old_metas table minus) exp_dots; | |
173 | get_opt (expression ID old_metas table minus) w | |
174 | | Ast0.Edots(_,Some x) | Ast0.Ecircles(_,Some x) | Ast0.Estars(_,Some x) -> | |
175 | expression ID old_metas table minus x | |
176 | | _ -> () (* no metavariable subterms *) | |
177 | ||
178 | and get_type_name = function | |
faf9a90c C |
179 | Type_cocci.ConstVol(_,ty) | Type_cocci.SignedT(_,Some ty) |
180 | | Type_cocci.Pointer(ty) | |
34e49164 C |
181 | | Type_cocci.FunctionPointer(ty) | Type_cocci.Array(ty) -> get_type_name ty |
182 | | Type_cocci.MetaType(nm,_,_) -> Some nm | |
183 | | _ -> None | |
184 | ||
185 | (* --------------------------------------------------------------------- *) | |
186 | (* Types *) | |
187 | ||
188 | and typeC old_metas table minus t = | |
189 | match Ast0.unwrap t with | |
190 | Ast0.ConstVol(cv,ty) -> typeC old_metas table minus ty | |
faf9a90c C |
191 | | Ast0.Signed(sgn,ty) -> |
192 | get_opt (typeC old_metas table minus) ty | |
34e49164 C |
193 | | Ast0.Pointer(ty,star) -> typeC old_metas table minus ty |
194 | | Ast0.FunctionPointer(ty,lp1,star,rp1,lp2,params,rp2) -> | |
195 | typeC old_metas table minus ty; | |
196 | parameter_list old_metas table minus params | |
197 | | Ast0.FunctionType(ty,lp1,params,rp1) -> | |
198 | get_opt (typeC old_metas table minus) ty; | |
199 | parameter_list old_metas table minus params | |
200 | | Ast0.Array(ty,lb,size,rb) -> | |
201 | typeC old_metas table minus ty; | |
202 | get_opt (expression ID old_metas table minus) size | |
203 | | Ast0.MetaType(name,_) -> | |
204 | check_table table minus name | |
205 | | Ast0.DisjType(_,types,_,_) -> | |
206 | List.iter (typeC old_metas table minus) types | |
faf9a90c | 207 | | Ast0.EnumName(en,id) -> ident GLOBAL old_metas table minus id |
34e49164 C |
208 | | Ast0.StructUnionName(su,Some id) -> ident GLOBAL old_metas table minus id |
209 | | Ast0.StructUnionDef(ty,lb,decls,rb) -> | |
210 | typeC old_metas table minus ty; | |
211 | dots (declaration GLOBAL old_metas table minus) decls | |
212 | | Ast0.OptType(ty) | Ast0.UniqueType(ty) -> | |
213 | failwith "unexpected code" | |
214 | | _ -> () (* no metavariable subterms *) | |
215 | ||
216 | (* --------------------------------------------------------------------- *) | |
217 | (* Variable declaration *) | |
218 | (* Even if the Cocci program specifies a list of declarations, they are | |
219 | split out into multiple declarations of a single variable each. *) | |
220 | ||
221 | and declaration context old_metas table minus d = | |
222 | match Ast0.unwrap d with | |
223 | Ast0.Init(stg,ty,id,eq,ini,sem) -> | |
224 | (match Ast0.unwrap ini with | |
225 | Ast0.InitExpr exp -> | |
226 | typeC old_metas table minus ty; | |
227 | ident context old_metas table minus id; | |
228 | expression ID old_metas table minus exp | |
229 | | _ -> | |
230 | (* | |
231 | if minus | |
232 | then | |
233 | failwith "complex initializer specification not allowed in - code" | |
234 | else*) | |
235 | (typeC old_metas table minus ty; | |
236 | ident context old_metas table minus id; | |
237 | initialiser old_metas table minus ini)) | |
238 | | Ast0.UnInit(stg,ty,id,sem) -> | |
239 | typeC old_metas table minus ty; ident context old_metas table minus id | |
240 | | Ast0.MacroDecl(name,lp,args,rp,sem) -> | |
faf9a90c | 241 | ident GLOBAL old_metas table minus name; |
34e49164 C |
242 | dots (expression ID old_metas table minus) args |
243 | | Ast0.TyDecl(ty,sem) -> typeC old_metas table minus ty | |
244 | | Ast0.Typedef(stg,ty,id,sem) -> | |
245 | typeC old_metas table minus ty; | |
246 | typeC old_metas table minus id | |
247 | | Ast0.DisjDecl(_,decls,_,_) -> | |
248 | List.iter (declaration ID old_metas table minus) decls | |
249 | | Ast0.Ddots(_,Some x) -> declaration ID old_metas table minus x | |
250 | | Ast0.Ddots(_,None) -> () | |
251 | | Ast0.OptDecl(_) | Ast0.UniqueDecl(_) -> | |
252 | failwith "unexpected code" | |
253 | ||
254 | (* --------------------------------------------------------------------- *) | |
255 | (* Initialiser *) | |
256 | ||
257 | and initialiser old_metas table minus ini = | |
258 | match Ast0.unwrap ini with | |
113803cf C |
259 | Ast0.MetaInit(name,_) -> |
260 | check_table table minus name | |
261 | | Ast0.InitExpr(exp) -> expression ID old_metas table minus exp | |
34e49164 C |
262 | | Ast0.InitList(lb,initlist,rb) -> |
263 | dots (initialiser old_metas table minus) initlist | |
113803cf C |
264 | | Ast0.InitGccExt(designators,eq,ini) -> |
265 | List.iter (designator old_metas table minus) designators; | |
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266 | initialiser old_metas table minus ini |
267 | | Ast0.InitGccName(name,eq,ini) -> | |
268 | ident FIELD old_metas table minus name; | |
269 | initialiser old_metas table minus ini | |
34e49164 C |
270 | | Ast0.Idots(_,Some x) -> initialiser old_metas table minus x |
271 | | Ast0.OptIni(_) | Ast0.UniqueIni(_) -> | |
272 | failwith "unexpected code" | |
273 | | _ -> () (* no metavariable subterms *) | |
274 | ||
113803cf C |
275 | and designator old_metas table minus = function |
276 | Ast0.DesignatorField(dot,id) -> | |
277 | ident FIELD old_metas table minus id | |
278 | | Ast0.DesignatorIndex(lb,exp,rb) -> | |
279 | expression ID old_metas table minus exp | |
280 | | Ast0.DesignatorRange(lb,min,dots,max,rb) -> | |
281 | expression ID old_metas table minus min; | |
282 | expression ID old_metas table minus max | |
283 | ||
34e49164 C |
284 | and initialiser_list old_metas table minus = |
285 | dots (initialiser old_metas table minus) | |
286 | ||
287 | (* --------------------------------------------------------------------- *) | |
288 | (* Parameter *) | |
289 | ||
290 | and parameterTypeDef old_metas table minus param = | |
291 | match Ast0.unwrap param with | |
292 | Ast0.Param(ty,id) -> | |
293 | get_opt (ident ID old_metas table minus) id; | |
294 | typeC old_metas table minus ty | |
295 | | Ast0.MetaParam(name,_) -> | |
296 | check_table table minus name | |
297 | | Ast0.MetaParamList(name,None,_) -> | |
298 | check_table table minus name | |
299 | | Ast0.MetaParamList(name,Some lenname,_) -> | |
300 | check_table table minus name; | |
301 | check_table table minus lenname | |
302 | | _ -> () (* no metavariable subterms *) | |
303 | ||
304 | and parameter_list old_metas table minus = | |
305 | dots (parameterTypeDef old_metas table minus) | |
306 | ||
307 | (* --------------------------------------------------------------------- *) | |
308 | (* Top-level code *) | |
309 | ||
310 | and statement old_metas table minus s = | |
311 | match Ast0.unwrap s with | |
312 | Ast0.Decl(_,decl) -> declaration ID old_metas table minus decl | |
313 | | Ast0.Seq(lbrace,body,rbrace) -> dots (statement old_metas table minus) body | |
314 | | Ast0.ExprStatement(exp,sem) -> expression ID old_metas table minus exp | |
315 | | Ast0.IfThen(iff,lp,exp,rp,branch,_) -> | |
316 | expression ID old_metas table minus exp; | |
317 | statement old_metas table minus branch | |
318 | | Ast0.IfThenElse(iff,lp,exp,rp,branch1,els,branch2,_) -> | |
319 | expression ID old_metas table minus exp; | |
320 | statement old_metas table minus branch1; | |
321 | statement old_metas table minus branch2 | |
322 | | Ast0.While(wh,lp,exp,rp,body,_) -> | |
323 | expression ID old_metas table minus exp; | |
324 | statement old_metas table minus body | |
325 | | Ast0.Do(d,body,wh,lp,exp,rp,sem) -> | |
326 | statement old_metas table minus body; | |
327 | expression ID old_metas table minus exp | |
328 | | Ast0.For(fr,lp,exp1,sem1,exp2,sem2,exp3,rp,body,_) -> | |
329 | get_opt (expression ID old_metas table minus) exp1; | |
330 | get_opt (expression ID old_metas table minus) exp2; | |
331 | get_opt (expression ID old_metas table minus) exp3; | |
332 | statement old_metas table minus body | |
333 | | Ast0.Iterator(nm,lp,args,rp,body,_) -> | |
faf9a90c | 334 | ident GLOBAL old_metas table minus nm; |
34e49164 C |
335 | dots (expression ID old_metas table minus) args; |
336 | statement old_metas table minus body | |
337 | | Ast0.Switch(switch,lp,exp,rp,lb,cases,rb) -> | |
338 | expression ID old_metas table minus exp; | |
339 | dots (case_line old_metas table minus) cases | |
340 | | Ast0.ReturnExpr(ret,exp,sem) -> expression ID old_metas table minus exp | |
341 | | Ast0.MetaStmt(name,_) -> check_table table minus name | |
342 | | Ast0.MetaStmtList(name,_) -> check_table table minus name | |
343 | | Ast0.Exp(exp) -> expression ID old_metas table minus exp | |
344 | | Ast0.TopExp(exp) -> expression ID old_metas table minus exp | |
345 | | Ast0.Ty(ty) -> typeC old_metas table minus ty | |
1be43e12 | 346 | | Ast0.TopInit(init) -> initialiser old_metas table minus init |
34e49164 C |
347 | | Ast0.Disj(_,rule_elem_dots_list,_,_) -> |
348 | List.iter (dots (statement old_metas table minus)) rule_elem_dots_list | |
349 | | Ast0.Nest(_,rule_elem_dots,_,w,_) -> | |
350 | dots (statement old_metas table minus) rule_elem_dots; | |
351 | List.iter (whencode (dots (statement old_metas table minus)) | |
1be43e12 C |
352 | (statement old_metas table minus) |
353 | (expression ID old_metas table minus)) | |
34e49164 C |
354 | w |
355 | | Ast0.Dots(_,x) | Ast0.Circles(_,x) | Ast0.Stars(_,x) -> | |
356 | List.iter | |
357 | (whencode (dots (statement old_metas table minus)) | |
1be43e12 C |
358 | (statement old_metas table minus) |
359 | (expression ID old_metas table minus)) x | |
34e49164 C |
360 | | Ast0.FunDecl(_,fi,name,lp,params,rp,lbrace,body,rbrace) -> |
361 | ident FN old_metas table minus name; | |
362 | List.iter (fninfo old_metas table minus) fi; | |
363 | parameter_list old_metas table minus params; | |
364 | dots (statement old_metas table minus) body | |
365 | | Ast0.Include(inc,s) -> () (* no metavariables possible *) | |
366 | | Ast0.Define(def,id,_,body) -> | |
367 | ident GLOBAL old_metas table minus id; | |
368 | dots (statement old_metas table minus) body | |
369 | | Ast0.Goto(_,i,_) -> ident ID old_metas table minus i | |
370 | | _ -> () (* no metavariable subterms *) | |
371 | ||
372 | and fninfo old_metas table minus = function | |
373 | Ast0.FStorage(stg) -> () | |
374 | | Ast0.FType(ty) -> typeC old_metas table minus ty | |
375 | | Ast0.FInline(inline) -> () | |
376 | | Ast0.FAttr(attr) -> () | |
377 | ||
1be43e12 | 378 | and whencode notfn alwaysfn expression = function |
34e49164 C |
379 | Ast0.WhenNot a -> notfn a |
380 | | Ast0.WhenAlways a -> alwaysfn a | |
381 | | Ast0.WhenModifier(_) -> () | |
1be43e12 C |
382 | | Ast0.WhenNotTrue a -> expression a |
383 | | Ast0.WhenNotFalse a -> expression a | |
34e49164 C |
384 | |
385 | and case_line old_metas table minus c = | |
386 | match Ast0.unwrap c with | |
387 | Ast0.Default(def,colon,code) -> | |
388 | dots (statement old_metas table minus) code | |
389 | | Ast0.Case(case,exp,colon,code) -> | |
390 | dots (statement old_metas table minus) code | |
391 | | Ast0.OptCase(case) -> failwith "unexpected code" | |
392 | ||
393 | (* --------------------------------------------------------------------- *) | |
394 | (* Rules *) | |
395 | ||
396 | let top_level old_metas table minus t = | |
397 | match Ast0.unwrap t with | |
398 | Ast0.DECL(stmt) -> statement old_metas table minus stmt | |
399 | | Ast0.CODE(stmt_dots) -> dots (statement old_metas table minus) stmt_dots | |
400 | | Ast0.ERRORWORDS(exps) -> | |
401 | List.iter (expression FN old_metas table minus) exps | |
402 | | _ -> () (* no metavariables possible *) | |
403 | ||
404 | let rule old_metas table minus rules = | |
405 | List.iter (top_level old_metas table minus) rules | |
406 | ||
407 | (* --------------------------------------------------------------------- *) | |
408 | ||
409 | let positions table rules = | |
410 | let mcode x = | |
411 | match Ast0.get_pos x with | |
412 | Ast0.MetaPos(name,constraints,_) -> | |
413 | let pos = Ast0.unwrap_mcode name in | |
414 | (find_loop table pos) := true | |
415 | | _ -> () in | |
416 | let option_default = () in | |
417 | let bind x y = () in | |
418 | let donothing r k e = k e in | |
419 | let fn = | |
b1b2de81 | 420 | V0.flat_combiner bind option_default |
34e49164 | 421 | mcode mcode mcode mcode mcode mcode mcode mcode mcode mcode mcode mcode |
34e49164 C |
422 | donothing donothing donothing donothing donothing donothing |
423 | donothing donothing donothing donothing donothing donothing donothing | |
424 | donothing donothing in | |
425 | ||
b1b2de81 | 426 | List.iter fn.VT0.combiner_rec_top_level rules |
34e49164 C |
427 | |
428 | let dup_positions rules = | |
429 | let mcode x = | |
430 | match Ast0.get_pos x with | |
431 | Ast0.MetaPos(name,constraints,_) -> | |
432 | let pos = Ast0.unwrap_mcode name in [pos] | |
433 | | _ -> [] in | |
434 | let option_default = [] in | |
435 | let bind x y = x@y in | |
436 | ||
437 | (* Case for everything that has a disj. | |
438 | Note, no positions on ( | ) of a disjunction, so no need to recurse on | |
439 | these. *) | |
440 | ||
441 | let expression r k e = | |
442 | match Ast0.unwrap e with | |
443 | Ast0.DisjExpr(_,explist,_,_) -> | |
444 | List.fold_left Common.union_set option_default | |
b1b2de81 | 445 | (List.map r.VT0.combiner_rec_expression explist) |
34e49164 C |
446 | | _ -> k e in |
447 | ||
448 | let typeC r k e = (* not sure relevent because "only after iso" *) | |
449 | match Ast0.unwrap e with | |
450 | Ast0.DisjType(_,types,_,_) -> | |
451 | List.fold_left Common.union_set option_default | |
b1b2de81 | 452 | (List.map r.VT0.combiner_rec_typeC types) |
34e49164 C |
453 | | _ -> k e in |
454 | ||
455 | let declaration r k e = | |
456 | match Ast0.unwrap e with | |
457 | Ast0.DisjDecl(_,decls,_,_) -> | |
458 | List.fold_left Common.union_set option_default | |
b1b2de81 | 459 | (List.map r.VT0.combiner_rec_declaration decls) |
34e49164 C |
460 | | _ -> k e in |
461 | ||
462 | let statement r k e = | |
463 | match Ast0.unwrap e with | |
464 | Ast0.Disj(_,stmts,_,_) -> | |
465 | List.fold_left Common.union_set option_default | |
b1b2de81 | 466 | (List.map r.VT0.combiner_rec_statement_dots stmts) |
34e49164 C |
467 | | _ -> k e in |
468 | ||
469 | let donothing r k e = k e in | |
470 | let fn = | |
b1b2de81 | 471 | V0.flat_combiner bind option_default |
34e49164 | 472 | mcode mcode mcode mcode mcode mcode mcode mcode mcode mcode mcode mcode |
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473 | donothing donothing donothing donothing donothing donothing |
474 | donothing expression typeC donothing donothing declaration statement | |
475 | donothing donothing in | |
476 | ||
477 | let res = | |
478 | List.sort compare | |
479 | (List.fold_left Common.union_set option_default | |
b1b2de81 | 480 | (List.map fn.VT0.combiner_rec_top_level rules)) in |
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481 | let rec loop = function |
482 | [] | [_] -> () | |
483 | | ((rule,name) as x)::y::_ when x = y -> | |
484 | failwith (Printf.sprintf "duplicate use of %s.%s" rule name) | |
485 | | _::xs -> loop xs in | |
486 | loop res | |
487 | ||
488 | (* --------------------------------------------------------------------- *) | |
489 | ||
490 | let make_table l = | |
491 | let table = | |
492 | (Hashtbl.create(List.length l) : | |
493 | ((string * string), bool ref) Hashtbl.t) in | |
494 | List.iter | |
495 | (function x -> Hashtbl.add table (Ast.get_meta_name x) (ref false)) l; | |
496 | table | |
497 | ||
498 | let add_to_fresh_table l = | |
499 | List.iter | |
500 | (function x -> | |
501 | let name = Ast.get_meta_name x in Hashtbl.replace fresh_table name ()) | |
502 | l | |
503 | ||
504 | let check_all_marked rname err table after_err = | |
505 | Hashtbl.iter | |
506 | (function name -> | |
507 | function (cell) -> | |
508 | if not (!cell) | |
509 | then | |
510 | let (_,name) = name in | |
511 | warning | |
512 | (Printf.sprintf "%s: %s %s not used %s" rname err name after_err)) | |
513 | table | |
514 | ||
515 | let check_meta rname old_metas inherited_metavars metavars minus plus = | |
516 | let old_metas = | |
517 | List.map (function (_,x) -> x) (List.map Ast.get_meta_name old_metas) in | |
518 | let (fresh,other) = | |
519 | List.partition (function Ast.MetaFreshIdDecl(_,_) -> true | _ -> false) | |
520 | metavars in | |
521 | let (err,other) = | |
522 | List.partition (function Ast.MetaErrDecl(_,_) -> true | _ -> false) | |
523 | other in | |
524 | let (ierr,iother) = | |
525 | List.partition (function Ast.MetaErrDecl(_,_) -> true | _ -> false) | |
526 | inherited_metavars in | |
527 | let fresh_table = make_table fresh in | |
528 | let err_table = make_table (err@ierr) in | |
529 | let other_table = make_table other in | |
530 | let iother_table = make_table iother in | |
531 | add_to_fresh_table fresh; | |
532 | rule old_metas [iother_table;other_table;err_table] true minus; | |
533 | positions [iother_table;other_table] minus; | |
534 | dup_positions minus; | |
535 | check_all_marked rname "metavariable" other_table "in the - or context code"; | |
536 | rule old_metas [iother_table;fresh_table;err_table] false plus; | |
faf9a90c | 537 | check_all_marked rname "inherited metavariable" iother_table |
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538 | "in the -, +, or context code"; |
539 | check_all_marked rname "metavariable" fresh_table "in the + code"; | |
540 | check_all_marked rname "error metavariable" err_table "" |