Commit | Line | Data |
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34e49164 C |
1 | (* For minus fragment, checks that all of the identifier metavariables that |
2 | are used are not declared as fresh, and check that all declared variables | |
3 | are used. For plus fragment, just check that the variables declared as | |
4 | fresh are used. What is the issue about error variables? (don't remember) *) | |
5 | ||
6 | module Ast0 = Ast0_cocci | |
7 | module Ast = Ast_cocci | |
8 | module V0 = Visitor_ast0 | |
b1b2de81 | 9 | module VT0 = Visitor_ast0_types |
34e49164 C |
10 | |
11 | (* all fresh identifiers *) | |
12 | let fresh_table = (Hashtbl.create(50) : ((string * string), unit) Hashtbl.t) | |
13 | ||
14 | let warning s = Printf.fprintf stderr "warning: %s\n" s | |
15 | ||
708f4980 | 16 | let promote name = (name,(),Ast0.default_info(),(),None,-1) |
34e49164 C |
17 | |
18 | (* --------------------------------------------------------------------- *) | |
19 | ||
20 | let find_loop table name = | |
21 | let rec loop = function | |
22 | [] -> raise Not_found | |
23 | | x::xs -> (try Hashtbl.find x name with Not_found -> loop xs) in | |
24 | loop table | |
25 | ||
708f4980 | 26 | let check_table table minus (name,_,info,_,_,_) = |
0708f913 | 27 | let rl = info.Ast0.pos_info.Ast0.line_start in |
34e49164 C |
28 | if minus |
29 | then | |
30 | (try (find_loop table name) := true | |
31 | with | |
32 | Not_found -> | |
33 | (try | |
34 | Hashtbl.find fresh_table name; | |
35 | let (_,name) = name in | |
36 | failwith | |
37 | (Printf.sprintf | |
38 | "%d: unexpected use of a fresh identifier %s" rl name) | |
39 | with Not_found -> ())) | |
40 | else (try (find_loop table name) := true with Not_found -> ()) | |
41 | ||
42 | let get_opt fn = Common.do_option fn | |
43 | ||
44 | (* --------------------------------------------------------------------- *) | |
45 | (* Dots *) | |
46 | ||
47 | let dots fn d = | |
48 | match Ast0.unwrap d with | |
49 | Ast0.DOTS(x) -> List.iter fn x | |
50 | | Ast0.CIRCLES(x) -> List.iter fn x | |
51 | | Ast0.STARS(x) -> List.iter fn x | |
52 | ||
53 | (* --------------------------------------------------------------------- *) | |
54 | (* Identifier *) | |
55 | ||
56 | type context = ID | FIELD | FN | GLOBAL | |
57 | ||
58 | (* heuristic for distinguishing ifdef variables from undeclared metavariables*) | |
59 | let is_ifdef name = | |
60 | String.length name > 2 && String.uppercase name = name | |
61 | ||
62 | let ident context old_metas table minus i = | |
63 | match Ast0.unwrap i with | |
951c7801 C |
64 | Ast0.Id((name,_,info,_,_,_) : string Ast0.mcode) -> |
65 | let rl = info.Ast0.pos_info.Ast0.line_start in | |
66 | let is_plus i = | |
67 | match Ast0.get_mcodekind i with Ast0.PLUS _ -> true | _ -> false in | |
68 | let err = | |
69 | if List.exists (function x -> x = name) old_metas | |
70 | && (minus || is_plus i) | |
34e49164 | 71 | then |
951c7801 C |
72 | begin |
73 | warning | |
74 | (Printf.sprintf | |
75 | "line %d: %s, previously declared as a metavariable, is used as an identifier" rl name); | |
76 | true | |
77 | end | |
78 | else false in | |
79 | (match context with | |
80 | ID -> | |
81 | if not (is_ifdef name) && minus && not err(* warn only once per id *) | |
82 | then | |
83 | warning | |
84 | (Printf.sprintf "line %d: should %s be a metavariable?" rl name) | |
85 | | _ -> ()) | |
86 | | Ast0.MetaId(name,_,_) -> check_table table minus name | |
87 | | Ast0.MetaFunc(name,_,_) -> check_table table minus name | |
88 | | Ast0.MetaLocalFunc(name,_,_) -> check_table table minus name | |
89 | | Ast0.OptIdent(_) | Ast0.UniqueIdent(_) -> | |
90 | failwith "unexpected code" | |
34e49164 C |
91 | |
92 | (* --------------------------------------------------------------------- *) | |
93 | (* Expression *) | |
94 | ||
95 | let rec expression context old_metas table minus e = | |
96 | match Ast0.unwrap e with | |
97 | Ast0.Ident(id) -> | |
98 | ident context old_metas table minus id | |
99 | | Ast0.FunCall(fn,lp,args,rp) -> | |
100 | expression FN old_metas table minus fn; | |
101 | dots (expression ID old_metas table minus) args | |
102 | | Ast0.Assignment(left,op,right,_) -> | |
103 | expression context old_metas table minus left; | |
104 | expression ID old_metas table minus right | |
105 | | Ast0.CondExpr(exp1,why,exp2,colon,exp3) -> | |
106 | expression ID old_metas table minus exp1; | |
107 | get_opt (expression ID old_metas table minus) exp2; | |
108 | expression ID old_metas table minus exp3 | |
109 | | Ast0.Postfix(exp,op) -> | |
110 | expression ID old_metas table minus exp | |
111 | | Ast0.Infix(exp,op) -> | |
112 | expression ID old_metas table minus exp | |
113 | | Ast0.Unary(exp,op) -> | |
114 | expression ID old_metas table minus exp | |
115 | | Ast0.Binary(left,op,right) -> | |
116 | expression ID old_metas table minus left; | |
117 | expression ID old_metas table minus right | |
118 | | Ast0.Paren(lp,exp,rp) -> | |
119 | expression ID old_metas table minus exp | |
120 | | Ast0.ArrayAccess(exp1,lb,exp2,rb) -> | |
121 | expression ID old_metas table minus exp1; | |
122 | expression ID old_metas table minus exp2 | |
123 | | Ast0.RecordAccess(exp,pt,field) -> | |
124 | expression ID old_metas table minus exp; | |
125 | ident FIELD old_metas table minus field | |
126 | | Ast0.RecordPtAccess(exp,ar,field) -> | |
127 | expression ID old_metas table minus exp; | |
128 | ident FIELD old_metas table minus field | |
129 | | Ast0.Cast(lp,ty,rp,exp) -> | |
130 | typeC old_metas table minus ty; expression ID old_metas table minus exp | |
131 | | Ast0.SizeOfExpr(szf,exp) -> expression ID old_metas table minus exp | |
132 | | Ast0.SizeOfType(szf,lp,ty,rp) -> typeC old_metas table minus ty | |
133 | | Ast0.TypeExp(ty) -> typeC old_metas table minus ty | |
134 | | Ast0.MetaExpr(name,_,Some tys,_,_) -> | |
135 | List.iter | |
136 | (function x -> | |
137 | match get_type_name x with | |
138 | Some(ty) -> check_table table minus (promote ty) | |
139 | | None -> ()) | |
140 | tys; | |
141 | check_table table minus name | |
142 | | Ast0.MetaExpr(name,_,_,_,_) | Ast0.MetaErr(name,_,_) -> | |
143 | check_table table minus name | |
144 | | Ast0.MetaExprList(name,None,_) -> | |
145 | check_table table minus name | |
146 | | Ast0.MetaExprList(name,Some lenname,_) -> | |
147 | check_table table minus name; | |
148 | check_table table minus lenname | |
149 | | Ast0.DisjExpr(_,exps,_,_) -> | |
0708f913 | 150 | List.iter (expression context old_metas table minus) exps |
34e49164 C |
151 | | Ast0.NestExpr(_,exp_dots,_,w,_) -> |
152 | dots (expression ID old_metas table minus) exp_dots; | |
153 | get_opt (expression ID old_metas table minus) w | |
154 | | Ast0.Edots(_,Some x) | Ast0.Ecircles(_,Some x) | Ast0.Estars(_,Some x) -> | |
155 | expression ID old_metas table minus x | |
156 | | _ -> () (* no metavariable subterms *) | |
157 | ||
158 | and get_type_name = function | |
faf9a90c C |
159 | Type_cocci.ConstVol(_,ty) | Type_cocci.SignedT(_,Some ty) |
160 | | Type_cocci.Pointer(ty) | |
34e49164 C |
161 | | Type_cocci.FunctionPointer(ty) | Type_cocci.Array(ty) -> get_type_name ty |
162 | | Type_cocci.MetaType(nm,_,_) -> Some nm | |
163 | | _ -> None | |
164 | ||
165 | (* --------------------------------------------------------------------- *) | |
166 | (* Types *) | |
167 | ||
168 | and typeC old_metas table minus t = | |
169 | match Ast0.unwrap t with | |
170 | Ast0.ConstVol(cv,ty) -> typeC old_metas table minus ty | |
faf9a90c C |
171 | | Ast0.Signed(sgn,ty) -> |
172 | get_opt (typeC old_metas table minus) ty | |
34e49164 C |
173 | | Ast0.Pointer(ty,star) -> typeC old_metas table minus ty |
174 | | Ast0.FunctionPointer(ty,lp1,star,rp1,lp2,params,rp2) -> | |
175 | typeC old_metas table minus ty; | |
176 | parameter_list old_metas table minus params | |
177 | | Ast0.FunctionType(ty,lp1,params,rp1) -> | |
178 | get_opt (typeC old_metas table minus) ty; | |
179 | parameter_list old_metas table minus params | |
180 | | Ast0.Array(ty,lb,size,rb) -> | |
181 | typeC old_metas table minus ty; | |
182 | get_opt (expression ID old_metas table minus) size | |
183 | | Ast0.MetaType(name,_) -> | |
184 | check_table table minus name | |
185 | | Ast0.DisjType(_,types,_,_) -> | |
186 | List.iter (typeC old_metas table minus) types | |
faf9a90c | 187 | | Ast0.EnumName(en,id) -> ident GLOBAL old_metas table minus id |
34e49164 C |
188 | | Ast0.StructUnionName(su,Some id) -> ident GLOBAL old_metas table minus id |
189 | | Ast0.StructUnionDef(ty,lb,decls,rb) -> | |
190 | typeC old_metas table minus ty; | |
191 | dots (declaration GLOBAL old_metas table minus) decls | |
192 | | Ast0.OptType(ty) | Ast0.UniqueType(ty) -> | |
193 | failwith "unexpected code" | |
194 | | _ -> () (* no metavariable subterms *) | |
195 | ||
196 | (* --------------------------------------------------------------------- *) | |
197 | (* Variable declaration *) | |
198 | (* Even if the Cocci program specifies a list of declarations, they are | |
199 | split out into multiple declarations of a single variable each. *) | |
200 | ||
201 | and declaration context old_metas table minus d = | |
202 | match Ast0.unwrap d with | |
203 | Ast0.Init(stg,ty,id,eq,ini,sem) -> | |
204 | (match Ast0.unwrap ini with | |
205 | Ast0.InitExpr exp -> | |
206 | typeC old_metas table minus ty; | |
207 | ident context old_metas table minus id; | |
208 | expression ID old_metas table minus exp | |
209 | | _ -> | |
210 | (* | |
211 | if minus | |
212 | then | |
213 | failwith "complex initializer specification not allowed in - code" | |
214 | else*) | |
215 | (typeC old_metas table minus ty; | |
216 | ident context old_metas table minus id; | |
217 | initialiser old_metas table minus ini)) | |
218 | | Ast0.UnInit(stg,ty,id,sem) -> | |
219 | typeC old_metas table minus ty; ident context old_metas table minus id | |
220 | | Ast0.MacroDecl(name,lp,args,rp,sem) -> | |
faf9a90c | 221 | ident GLOBAL old_metas table minus name; |
34e49164 C |
222 | dots (expression ID old_metas table minus) args |
223 | | Ast0.TyDecl(ty,sem) -> typeC old_metas table minus ty | |
224 | | Ast0.Typedef(stg,ty,id,sem) -> | |
225 | typeC old_metas table minus ty; | |
226 | typeC old_metas table minus id | |
227 | | Ast0.DisjDecl(_,decls,_,_) -> | |
228 | List.iter (declaration ID old_metas table minus) decls | |
229 | | Ast0.Ddots(_,Some x) -> declaration ID old_metas table minus x | |
230 | | Ast0.Ddots(_,None) -> () | |
231 | | Ast0.OptDecl(_) | Ast0.UniqueDecl(_) -> | |
232 | failwith "unexpected code" | |
233 | ||
234 | (* --------------------------------------------------------------------- *) | |
235 | (* Initialiser *) | |
236 | ||
237 | and initialiser old_metas table minus ini = | |
238 | match Ast0.unwrap ini with | |
113803cf C |
239 | Ast0.MetaInit(name,_) -> |
240 | check_table table minus name | |
241 | | Ast0.InitExpr(exp) -> expression ID old_metas table minus exp | |
34e49164 C |
242 | | Ast0.InitList(lb,initlist,rb) -> |
243 | dots (initialiser old_metas table minus) initlist | |
113803cf C |
244 | | Ast0.InitGccExt(designators,eq,ini) -> |
245 | List.iter (designator old_metas table minus) designators; | |
34e49164 C |
246 | initialiser old_metas table minus ini |
247 | | Ast0.InitGccName(name,eq,ini) -> | |
248 | ident FIELD old_metas table minus name; | |
249 | initialiser old_metas table minus ini | |
34e49164 C |
250 | | Ast0.Idots(_,Some x) -> initialiser old_metas table minus x |
251 | | Ast0.OptIni(_) | Ast0.UniqueIni(_) -> | |
252 | failwith "unexpected code" | |
253 | | _ -> () (* no metavariable subterms *) | |
254 | ||
113803cf C |
255 | and designator old_metas table minus = function |
256 | Ast0.DesignatorField(dot,id) -> | |
257 | ident FIELD old_metas table minus id | |
258 | | Ast0.DesignatorIndex(lb,exp,rb) -> | |
259 | expression ID old_metas table minus exp | |
260 | | Ast0.DesignatorRange(lb,min,dots,max,rb) -> | |
261 | expression ID old_metas table minus min; | |
262 | expression ID old_metas table minus max | |
263 | ||
34e49164 C |
264 | and initialiser_list old_metas table minus = |
265 | dots (initialiser old_metas table minus) | |
266 | ||
267 | (* --------------------------------------------------------------------- *) | |
268 | (* Parameter *) | |
269 | ||
270 | and parameterTypeDef old_metas table minus param = | |
271 | match Ast0.unwrap param with | |
272 | Ast0.Param(ty,id) -> | |
273 | get_opt (ident ID old_metas table minus) id; | |
274 | typeC old_metas table minus ty | |
275 | | Ast0.MetaParam(name,_) -> | |
276 | check_table table minus name | |
277 | | Ast0.MetaParamList(name,None,_) -> | |
278 | check_table table minus name | |
279 | | Ast0.MetaParamList(name,Some lenname,_) -> | |
280 | check_table table minus name; | |
281 | check_table table minus lenname | |
282 | | _ -> () (* no metavariable subterms *) | |
283 | ||
284 | and parameter_list old_metas table minus = | |
285 | dots (parameterTypeDef old_metas table minus) | |
286 | ||
287 | (* --------------------------------------------------------------------- *) | |
288 | (* Top-level code *) | |
289 | ||
290 | and statement old_metas table minus s = | |
291 | match Ast0.unwrap s with | |
292 | Ast0.Decl(_,decl) -> declaration ID old_metas table minus decl | |
293 | | Ast0.Seq(lbrace,body,rbrace) -> dots (statement old_metas table minus) body | |
294 | | Ast0.ExprStatement(exp,sem) -> expression ID old_metas table minus exp | |
295 | | Ast0.IfThen(iff,lp,exp,rp,branch,_) -> | |
296 | expression ID old_metas table minus exp; | |
297 | statement old_metas table minus branch | |
298 | | Ast0.IfThenElse(iff,lp,exp,rp,branch1,els,branch2,_) -> | |
299 | expression ID old_metas table minus exp; | |
300 | statement old_metas table minus branch1; | |
301 | statement old_metas table minus branch2 | |
302 | | Ast0.While(wh,lp,exp,rp,body,_) -> | |
303 | expression ID old_metas table minus exp; | |
304 | statement old_metas table minus body | |
305 | | Ast0.Do(d,body,wh,lp,exp,rp,sem) -> | |
306 | statement old_metas table minus body; | |
307 | expression ID old_metas table minus exp | |
308 | | Ast0.For(fr,lp,exp1,sem1,exp2,sem2,exp3,rp,body,_) -> | |
309 | get_opt (expression ID old_metas table minus) exp1; | |
310 | get_opt (expression ID old_metas table minus) exp2; | |
311 | get_opt (expression ID old_metas table minus) exp3; | |
312 | statement old_metas table minus body | |
313 | | Ast0.Iterator(nm,lp,args,rp,body,_) -> | |
faf9a90c | 314 | ident GLOBAL old_metas table minus nm; |
34e49164 C |
315 | dots (expression ID old_metas table minus) args; |
316 | statement old_metas table minus body | |
fc1ad971 | 317 | | Ast0.Switch(switch,lp,exp,rp,lb,decls,cases,rb) -> |
34e49164 | 318 | expression ID old_metas table minus exp; |
fc1ad971 | 319 | dots (statement old_metas table minus) decls; |
34e49164 C |
320 | dots (case_line old_metas table minus) cases |
321 | | Ast0.ReturnExpr(ret,exp,sem) -> expression ID old_metas table minus exp | |
322 | | Ast0.MetaStmt(name,_) -> check_table table minus name | |
323 | | Ast0.MetaStmtList(name,_) -> check_table table minus name | |
324 | | Ast0.Exp(exp) -> expression ID old_metas table minus exp | |
325 | | Ast0.TopExp(exp) -> expression ID old_metas table minus exp | |
326 | | Ast0.Ty(ty) -> typeC old_metas table minus ty | |
1be43e12 | 327 | | Ast0.TopInit(init) -> initialiser old_metas table minus init |
34e49164 C |
328 | | Ast0.Disj(_,rule_elem_dots_list,_,_) -> |
329 | List.iter (dots (statement old_metas table minus)) rule_elem_dots_list | |
330 | | Ast0.Nest(_,rule_elem_dots,_,w,_) -> | |
331 | dots (statement old_metas table minus) rule_elem_dots; | |
332 | List.iter (whencode (dots (statement old_metas table minus)) | |
1be43e12 C |
333 | (statement old_metas table minus) |
334 | (expression ID old_metas table minus)) | |
34e49164 C |
335 | w |
336 | | Ast0.Dots(_,x) | Ast0.Circles(_,x) | Ast0.Stars(_,x) -> | |
337 | List.iter | |
338 | (whencode (dots (statement old_metas table minus)) | |
1be43e12 C |
339 | (statement old_metas table minus) |
340 | (expression ID old_metas table minus)) x | |
34e49164 C |
341 | | Ast0.FunDecl(_,fi,name,lp,params,rp,lbrace,body,rbrace) -> |
342 | ident FN old_metas table minus name; | |
343 | List.iter (fninfo old_metas table minus) fi; | |
344 | parameter_list old_metas table minus params; | |
345 | dots (statement old_metas table minus) body | |
346 | | Ast0.Include(inc,s) -> () (* no metavariables possible *) | |
7f004419 | 347 | | Ast0.Define(def,id,params,body) -> |
34e49164 | 348 | ident GLOBAL old_metas table minus id; |
7f004419 | 349 | define_parameters old_metas table minus params; |
34e49164 | 350 | dots (statement old_metas table minus) body |
978fd7e5 | 351 | | Ast0.Label(i,_) -> ident ID old_metas table minus i |
34e49164 C |
352 | | Ast0.Goto(_,i,_) -> ident ID old_metas table minus i |
353 | | _ -> () (* no metavariable subterms *) | |
354 | ||
7f004419 C |
355 | and define_param old_metas table minus p = |
356 | match Ast0.unwrap p with | |
357 | Ast0.DParam(id) -> ident GLOBAL old_metas table minus id | |
358 | | Ast0.DPComma(_) | Ast0.DPdots(_) | Ast0.DPcircles(_) -> | |
359 | () (* no metavariable subterms *) | |
360 | | Ast0.OptDParam(dp) -> define_param old_metas table minus dp | |
361 | | Ast0.UniqueDParam(dp) -> define_param old_metas table minus dp | |
362 | ||
363 | and define_parameters old_metas table minus x = | |
364 | match Ast0.unwrap x with | |
365 | Ast0.NoParams -> () | |
366 | | Ast0.DParams(lp,dp,rp) -> dots (define_param old_metas table minus) dp | |
367 | ||
34e49164 C |
368 | and fninfo old_metas table minus = function |
369 | Ast0.FStorage(stg) -> () | |
370 | | Ast0.FType(ty) -> typeC old_metas table minus ty | |
371 | | Ast0.FInline(inline) -> () | |
372 | | Ast0.FAttr(attr) -> () | |
373 | ||
1be43e12 | 374 | and whencode notfn alwaysfn expression = function |
34e49164 C |
375 | Ast0.WhenNot a -> notfn a |
376 | | Ast0.WhenAlways a -> alwaysfn a | |
377 | | Ast0.WhenModifier(_) -> () | |
1be43e12 C |
378 | | Ast0.WhenNotTrue a -> expression a |
379 | | Ast0.WhenNotFalse a -> expression a | |
34e49164 C |
380 | |
381 | and case_line old_metas table minus c = | |
382 | match Ast0.unwrap c with | |
383 | Ast0.Default(def,colon,code) -> | |
384 | dots (statement old_metas table minus) code | |
385 | | Ast0.Case(case,exp,colon,code) -> | |
386 | dots (statement old_metas table minus) code | |
fc1ad971 C |
387 | | Ast0.DisjCase(_,case_lines,_,_) -> |
388 | List.iter (case_line old_metas table minus) case_lines | |
34e49164 C |
389 | | Ast0.OptCase(case) -> failwith "unexpected code" |
390 | ||
391 | (* --------------------------------------------------------------------- *) | |
392 | (* Rules *) | |
393 | ||
394 | let top_level old_metas table minus t = | |
395 | match Ast0.unwrap t with | |
396 | Ast0.DECL(stmt) -> statement old_metas table minus stmt | |
397 | | Ast0.CODE(stmt_dots) -> dots (statement old_metas table minus) stmt_dots | |
398 | | Ast0.ERRORWORDS(exps) -> | |
399 | List.iter (expression FN old_metas table minus) exps | |
400 | | _ -> () (* no metavariables possible *) | |
401 | ||
402 | let rule old_metas table minus rules = | |
403 | List.iter (top_level old_metas table minus) rules | |
404 | ||
405 | (* --------------------------------------------------------------------- *) | |
406 | ||
407 | let positions table rules = | |
408 | let mcode x = | |
409 | match Ast0.get_pos x with | |
410 | Ast0.MetaPos(name,constraints,_) -> | |
411 | let pos = Ast0.unwrap_mcode name in | |
412 | (find_loop table pos) := true | |
413 | | _ -> () in | |
414 | let option_default = () in | |
415 | let bind x y = () in | |
416 | let donothing r k e = k e in | |
417 | let fn = | |
b1b2de81 | 418 | V0.flat_combiner bind option_default |
34e49164 | 419 | mcode mcode mcode mcode mcode mcode mcode mcode mcode mcode mcode mcode |
34e49164 C |
420 | donothing donothing donothing donothing donothing donothing |
421 | donothing donothing donothing donothing donothing donothing donothing | |
422 | donothing donothing in | |
423 | ||
b1b2de81 | 424 | List.iter fn.VT0.combiner_rec_top_level rules |
34e49164 C |
425 | |
426 | let dup_positions rules = | |
427 | let mcode x = | |
428 | match Ast0.get_pos x with | |
429 | Ast0.MetaPos(name,constraints,_) -> | |
430 | let pos = Ast0.unwrap_mcode name in [pos] | |
431 | | _ -> [] in | |
432 | let option_default = [] in | |
433 | let bind x y = x@y in | |
434 | ||
435 | (* Case for everything that has a disj. | |
436 | Note, no positions on ( | ) of a disjunction, so no need to recurse on | |
437 | these. *) | |
438 | ||
439 | let expression r k e = | |
440 | match Ast0.unwrap e with | |
441 | Ast0.DisjExpr(_,explist,_,_) -> | |
442 | List.fold_left Common.union_set option_default | |
b1b2de81 | 443 | (List.map r.VT0.combiner_rec_expression explist) |
34e49164 C |
444 | | _ -> k e in |
445 | ||
446 | let typeC r k e = (* not sure relevent because "only after iso" *) | |
447 | match Ast0.unwrap e with | |
448 | Ast0.DisjType(_,types,_,_) -> | |
449 | List.fold_left Common.union_set option_default | |
b1b2de81 | 450 | (List.map r.VT0.combiner_rec_typeC types) |
34e49164 C |
451 | | _ -> k e in |
452 | ||
453 | let declaration r k e = | |
454 | match Ast0.unwrap e with | |
455 | Ast0.DisjDecl(_,decls,_,_) -> | |
456 | List.fold_left Common.union_set option_default | |
b1b2de81 | 457 | (List.map r.VT0.combiner_rec_declaration decls) |
34e49164 C |
458 | | _ -> k e in |
459 | ||
460 | let statement r k e = | |
461 | match Ast0.unwrap e with | |
462 | Ast0.Disj(_,stmts,_,_) -> | |
463 | List.fold_left Common.union_set option_default | |
b1b2de81 | 464 | (List.map r.VT0.combiner_rec_statement_dots stmts) |
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465 | | _ -> k e in |
466 | ||
467 | let donothing r k e = k e in | |
468 | let fn = | |
b1b2de81 | 469 | V0.flat_combiner bind option_default |
34e49164 | 470 | mcode mcode mcode mcode mcode mcode mcode mcode mcode mcode mcode mcode |
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471 | donothing donothing donothing donothing donothing donothing |
472 | donothing expression typeC donothing donothing declaration statement | |
473 | donothing donothing in | |
474 | ||
475 | let res = | |
476 | List.sort compare | |
477 | (List.fold_left Common.union_set option_default | |
b1b2de81 | 478 | (List.map fn.VT0.combiner_rec_top_level rules)) in |
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479 | let rec loop = function |
480 | [] | [_] -> () | |
481 | | ((rule,name) as x)::y::_ when x = y -> | |
482 | failwith (Printf.sprintf "duplicate use of %s.%s" rule name) | |
483 | | _::xs -> loop xs in | |
484 | loop res | |
485 | ||
486 | (* --------------------------------------------------------------------- *) | |
487 | ||
488 | let make_table l = | |
489 | let table = | |
490 | (Hashtbl.create(List.length l) : | |
491 | ((string * string), bool ref) Hashtbl.t) in | |
492 | List.iter | |
493 | (function x -> Hashtbl.add table (Ast.get_meta_name x) (ref false)) l; | |
494 | table | |
495 | ||
496 | let add_to_fresh_table l = | |
497 | List.iter | |
498 | (function x -> | |
499 | let name = Ast.get_meta_name x in Hashtbl.replace fresh_table name ()) | |
500 | l | |
501 | ||
502 | let check_all_marked rname err table after_err = | |
503 | Hashtbl.iter | |
504 | (function name -> | |
505 | function (cell) -> | |
506 | if not (!cell) | |
507 | then | |
508 | let (_,name) = name in | |
509 | warning | |
510 | (Printf.sprintf "%s: %s %s not used %s" rname err name after_err)) | |
511 | table | |
512 | ||
513 | let check_meta rname old_metas inherited_metavars metavars minus plus = | |
514 | let old_metas = | |
515 | List.map (function (_,x) -> x) (List.map Ast.get_meta_name old_metas) in | |
516 | let (fresh,other) = | |
517 | List.partition (function Ast.MetaFreshIdDecl(_,_) -> true | _ -> false) | |
518 | metavars in | |
519 | let (err,other) = | |
520 | List.partition (function Ast.MetaErrDecl(_,_) -> true | _ -> false) | |
521 | other in | |
522 | let (ierr,iother) = | |
523 | List.partition (function Ast.MetaErrDecl(_,_) -> true | _ -> false) | |
524 | inherited_metavars in | |
525 | let fresh_table = make_table fresh in | |
526 | let err_table = make_table (err@ierr) in | |
527 | let other_table = make_table other in | |
528 | let iother_table = make_table iother in | |
529 | add_to_fresh_table fresh; | |
530 | rule old_metas [iother_table;other_table;err_table] true minus; | |
531 | positions [iother_table;other_table] minus; | |
532 | dup_positions minus; | |
533 | check_all_marked rname "metavariable" other_table "in the - or context code"; | |
534 | rule old_metas [iother_table;fresh_table;err_table] false plus; | |
faf9a90c | 535 | check_all_marked rname "inherited metavariable" iother_table |
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536 | "in the -, +, or context code"; |
537 | check_all_marked rname "metavariable" fresh_table "in the + code"; | |
538 | check_all_marked rname "error metavariable" err_table "" |