1 (* Detects subtrees that are all minus/plus and nodes that are "binding
2 context nodes". The latter is a node whose structure and immediate tokens
3 are the same in the minus and plus trees, and such that for every child,
4 the set of context nodes in the child subtree is the same in the minus and
8 module Ast0
= Ast0_cocci
9 module V0
= Visitor_ast0
10 module VT0
= Visitor_ast0_types
11 module U
= Unparse_ast0
13 (* --------------------------------------------------------------------- *)
14 (* Generic access to code *)
16 let set_mcodekind x mcodekind
=
18 Ast0.DotsExprTag
(d
) -> Ast0.set_mcodekind d mcodekind
19 | Ast0.DotsInitTag
(d
) -> Ast0.set_mcodekind d mcodekind
20 | Ast0.DotsParamTag
(d
) -> Ast0.set_mcodekind d mcodekind
21 | Ast0.DotsStmtTag
(d
) -> Ast0.set_mcodekind d mcodekind
22 | Ast0.DotsDeclTag
(d
) -> Ast0.set_mcodekind d mcodekind
23 | Ast0.DotsCaseTag
(d
) -> Ast0.set_mcodekind d mcodekind
24 | Ast0.IdentTag
(d
) -> Ast0.set_mcodekind d mcodekind
25 | Ast0.ExprTag
(d
) -> Ast0.set_mcodekind d mcodekind
26 | Ast0.ArgExprTag
(d
) | Ast0.TestExprTag
(d
) ->
27 failwith
"not possible - iso only"
28 | Ast0.TypeCTag
(d
) -> Ast0.set_mcodekind d mcodekind
29 | Ast0.ParamTag
(d
) -> Ast0.set_mcodekind d mcodekind
30 | Ast0.DeclTag
(d
) -> Ast0.set_mcodekind d mcodekind
31 | Ast0.InitTag
(d
) -> Ast0.set_mcodekind d mcodekind
32 | Ast0.StmtTag
(d
) -> Ast0.set_mcodekind d mcodekind
33 | Ast0.CaseLineTag
(d
) -> Ast0.set_mcodekind d mcodekind
34 | Ast0.TopTag
(d
) -> Ast0.set_mcodekind d mcodekind
35 | Ast0.IsoWhenTag
(_
) -> failwith
"only within iso phase"
36 | Ast0.IsoWhenTTag
(_
) -> failwith
"only within iso phase"
37 | Ast0.IsoWhenFTag
(_
) -> failwith
"only within iso phase"
38 | Ast0.MetaPosTag
(p
) -> failwith
"metapostag only within iso phase"
40 let set_index x index
=
42 Ast0.DotsExprTag
(d
) -> Ast0.set_index d index
43 | Ast0.DotsInitTag
(d
) -> Ast0.set_index d index
44 | Ast0.DotsParamTag
(d
) -> Ast0.set_index d index
45 | Ast0.DotsStmtTag
(d
) -> Ast0.set_index d index
46 | Ast0.DotsDeclTag
(d
) -> Ast0.set_index d index
47 | Ast0.DotsCaseTag
(d
) -> Ast0.set_index d index
48 | Ast0.IdentTag
(d
) -> Ast0.set_index d index
49 | Ast0.ExprTag
(d
) -> Ast0.set_index d index
50 | Ast0.ArgExprTag
(d
) | Ast0.TestExprTag
(d
) ->
51 failwith
"not possible - iso only"
52 | Ast0.TypeCTag
(d
) -> Ast0.set_index d index
53 | Ast0.ParamTag
(d
) -> Ast0.set_index d index
54 | Ast0.InitTag
(d
) -> Ast0.set_index d index
55 | Ast0.DeclTag
(d
) -> Ast0.set_index d index
56 | Ast0.StmtTag
(d
) -> Ast0.set_index d index
57 | Ast0.CaseLineTag
(d
) -> Ast0.set_index d index
58 | Ast0.TopTag
(d
) -> Ast0.set_index d index
59 | Ast0.IsoWhenTag
(_
) -> failwith
"only within iso phase"
60 | Ast0.IsoWhenTTag
(_
) -> failwith
"only within iso phase"
61 | Ast0.IsoWhenFTag
(_
) -> failwith
"only within iso phase"
62 | Ast0.MetaPosTag
(p
) -> failwith
"metapostag only within iso phase"
64 let get_index = function
65 Ast0.DotsExprTag
(d
) -> Index.expression_dots d
66 | Ast0.DotsInitTag
(d
) -> Index.initialiser_dots d
67 | Ast0.DotsParamTag
(d
) -> Index.parameter_dots d
68 | Ast0.DotsStmtTag
(d
) -> Index.statement_dots d
69 | Ast0.DotsDeclTag
(d
) -> Index.declaration_dots d
70 | Ast0.DotsCaseTag
(d
) -> Index.case_line_dots d
71 | Ast0.IdentTag
(d
) -> Index.ident d
72 | Ast0.ExprTag
(d
) -> Index.expression d
73 | Ast0.ArgExprTag
(d
) | Ast0.TestExprTag
(d
) ->
74 failwith
"not possible - iso only"
75 | Ast0.TypeCTag
(d
) -> Index.typeC d
76 | Ast0.ParamTag
(d
) -> Index.parameterTypeDef d
77 | Ast0.InitTag
(d
) -> Index.initialiser d
78 | Ast0.DeclTag
(d
) -> Index.declaration d
79 | Ast0.StmtTag
(d
) -> Index.statement d
80 | Ast0.CaseLineTag
(d
) -> Index.case_line d
81 | Ast0.TopTag
(d
) -> Index.top_level d
82 | Ast0.IsoWhenTag
(_
) -> failwith
"only within iso phase"
83 | Ast0.IsoWhenTTag
(_
) -> failwith
"only within iso phase"
84 | Ast0.IsoWhenFTag
(_
) -> failwith
"only within iso phase"
85 | Ast0.MetaPosTag
(p
) -> failwith
"metapostag only within iso phase"
87 (* --------------------------------------------------------------------- *)
88 (* Collect the line numbers of the plus code. This is used for disjunctions.
89 It is not completely clear why this is necessary, but it seems like an easy
90 fix for whatever is the problem that is discussed in disj_cases *)
92 let plus_lines = ref ([] : int list
)
95 let rec loop = function
98 match compare n x
with
102 | _
-> failwith
"not possible" in
103 plus_lines := loop !plus_lines
106 let rec loop = function
108 | [x
] -> if n
< x
then (min
,x
) else (x
,max
)
112 else if n
> x1
&& n
< x2
then (x1
,x2
) else loop (x2
::rest
) in
115 let collect_plus_lines top
=
118 let option_default = () in
119 let donothing r k e
= k e
in
120 let mcode (_
,_
,info
,mcodekind
,_
,_
) =
122 Ast0.PLUS _
-> insert info
.Ast0.pos_info
.Ast0.line_start
125 V0.flat_combiner
bind option_default
126 mcode mcode mcode mcode mcode mcode mcode mcode mcode mcode mcode mcode
127 donothing donothing donothing donothing donothing donothing
128 donothing donothing donothing donothing donothing donothing donothing
129 donothing donothing in
130 fn.VT0.combiner_rec_top_level top
132 (* --------------------------------------------------------------------- *)
135 Neutral
| AllMarked
of Ast.count
| NotAllMarked
(* marked means + or - *)
137 (* --------------------------------------------------------------------- *)
138 (* The first part analyzes each of the minus tree and the plus tree
141 (* ints are unique token indices (offset field) *)
143 Token
(* tokens *) of kind
* int (* unique index *) * Ast0.mcodekind
*
144 int list
(* context tokens *)
145 | Recursor
(* children *) of kind
*
146 int list
(* indices of all tokens at the level below *) *
147 Ast0.mcodekind list
(* tokens at the level below *) *
149 | Bind
(* neighbors *) of kind
*
150 int list
(* indices of all tokens at current level *) *
151 Ast0.mcodekind list
(* tokens at current level *) *
152 int list
(* indices of all tokens at the level below *) *
153 Ast0.mcodekind list
(* tokens at the level below *)
156 let kind2c = function
158 | AllMarked _
-> "allmarked"
159 | NotAllMarked
-> "notallmarked"
161 let node2c = function
162 Token
(k
,_
,_
,_
) -> Printf.sprintf
"token %s\n" (kind2c k
)
163 | Recursor
(k
,_
,_
,_
) -> Printf.sprintf
"recursor %s\n" (kind2c k
)
164 | Bind
(k
,_
,_
,_
,_
,_
) -> Printf.sprintf
"bind %s\n" (kind2c k
)
166 (* goal: detect negative in both tokens and recursors, or context only in
170 (k1
,k2
) when k1
= k2
-> k1
171 | (Neutral
,AllMarked c
) -> AllMarked c
172 | (AllMarked c
,Neutral
) -> AllMarked c
173 | _
-> NotAllMarked
in
176 (* there are tokens at this level, so ignore the level below *)
177 (Token
(k1
,i1
,t1
,l1
),Token
(k2
,i2
,t2
,l2
)) ->
178 Bind
(lub(k1
,k2
),[i1
;i2
],[t1
;t2
],[],[],[l1
;l2
])
181 (* there are tokens at this level, so ignore the level below *)
182 | (Token
(k1
,i1
,t1
,l1
),Recursor
(k2
,_
,_
,l2
)) ->
183 Bind
(lub(k1
,k2
),[i1
],[t1
],[],[],[l1
;l2
])
184 | (Recursor
(k1
,_
,_
,l1
),Token
(k2
,i2
,t2
,l2
)) ->
185 Bind
(lub(k1
,k2
),[i2
],[t2
],[],[],[l1
;l2
])
188 (* there are tokens at this level, so ignore the level below *)
189 | (Token
(k1
,i1
,t1
,l1
),Bind
(k2
,i2
,t2
,_
,_
,l2
)) ->
190 Bind
(lub(k1
,k2
),i1
::i2
,t1
::t2
,[],[],l1
::l2
)
191 | (Bind
(k1
,i1
,t1
,_
,_
,l1
),Token
(k2
,i2
,t2
,l2
)) ->
192 Bind
(lub(k1
,k2
),i1
@[i2
],t1
@[t2
],[],[],l1
@[l2
])
195 | (Recursor
(k1
,bi1
,bt1
,l1
),Bind
(k2
,i2
,t2
,bi2
,bt2
,l2
)) ->
196 Bind
(lub(k1
,k2
),i2
,t2
,bi1
@bi2
,bt1
@bt2
,l1
::l2
)
197 | (Bind
(k1
,i1
,t1
,bi1
,bt1
,l1
),Recursor
(k2
,bi2
,bt2
,l2
)) ->
198 Bind
(lub(k1
,k2
),i1
,t1
,bi1
@bi2
,bt1
@bt2
,l1
@[l2
])
200 (* recursor/recursor and bind/bind - not likely to ever occur *)
201 | (Recursor
(k1
,bi1
,bt1
,l1
),Recursor
(k2
,bi2
,bt2
,l2
)) ->
202 Bind
(lub(k1
,k2
),[],[],bi1
@bi2
,bt1
@bt2
,[l1
;l2
])
203 | (Bind
(k1
,i1
,t1
,bi1
,bt1
,l1
),Bind
(k2
,i2
,t2
,bi2
,bt2
,l2
)) ->
204 Bind
(lub(k1
,k2
),i1
@i2
,t1
@t2
,bi1
@bi2
,bt1
@bt2
,l1
@l2
)
207 let option_default = (*Bind(Neutral,[],[],[],[],[])*)
208 Recursor
(Neutral
,[],[],[])
210 let mcode (_
,_
,info
,mcodekind
,pos
,_
) =
211 let offset = info
.Ast0.pos_info
.Ast0.offset in
213 Ast0.MINUS
(_
) -> Token
(AllMarked
Ast.ONE
,offset,mcodekind
,[])
214 | Ast0.PLUS c
-> Token
(AllMarked c
,offset,mcodekind
,[])
215 | Ast0.CONTEXT
(_
) -> Token
(NotAllMarked
,offset,mcodekind
,[offset])
216 | _
-> failwith
"not possible"
218 let neutral_mcode (_
,_
,info
,mcodekind
,pos
,_
) =
219 let offset = info
.Ast0.pos_info
.Ast0.offset in
221 Ast0.MINUS
(_
) -> Token
(Neutral
,offset,mcodekind
,[])
222 | Ast0.PLUS _
-> Token
(Neutral
,offset,mcodekind
,[])
223 | Ast0.CONTEXT
(_
) -> Token
(Neutral
,offset,mcodekind
,[offset])
224 | _
-> failwith
"not possible"
226 (* neutral for context; used for mcode in bef aft nodes that don't represent
227 anything if they don't contain some information *)
228 let nc_mcode (_
,_
,info
,mcodekind
,pos
,_
) =
229 (* distinguish from the offset of some real token *)
230 let offset = (-1) * info
.Ast0.pos_info
.Ast0.offset in
232 Ast0.MINUS
(_
) -> Token
(AllMarked
Ast.ONE
,offset,mcodekind
,[])
233 | Ast0.PLUS c
-> Token
(AllMarked c
,offset,mcodekind
,[])
235 (* Unlike the other mcode cases, we drop the offset from the context
236 offsets. This is because we don't know whether the term this is
237 associated with is - or context. In any case, the context offsets are
238 used for identification, and this invisible node should not be needed
240 Token
(Neutral
,offset,mcodekind
,[])
241 | _
-> failwith
"not possible"
243 let is_context = function Ast0.CONTEXT
(_
) -> true | _
-> false
245 let union_all l
= List.fold_left
Common.union_set
[] l
247 (* is minus is true when we are processing minus code that might be
248 intermingled with plus code. it is used in disj_cases *)
249 let classify is_minus all_marked table code
=
250 let mkres builder k il tl bil btl l e
=
253 Ast0.set_mcodekind e
(all_marked count
) (* definitive *)
255 let check_index il tl
=
256 if List.for_all
is_context tl
258 (let e1 = builder e
in
259 let index = (get_index e1)@il
in
261 let _ = Hashtbl.find table
index in
263 (Printf.sprintf
"line %d: index %s already used\n"
264 (Ast0.get_info e
).Ast0.pos_info
.Ast0.line_start
265 (String.concat
" " (List.map string_of_int
index)))
266 with Not_found
-> Hashtbl.add table
index (e1,l
)) in
267 if il
= [] then check_index bil btl
else check_index il tl
);
269 then Recursor
(k
, bil
, btl
, union_all l
)
270 else Recursor
(k
, il
, tl
, union_all l
) in
272 let compute_result builder e
= function
273 Bind
(k
,il
,tl
,bil
,btl
,l
) -> mkres builder k il tl bil btl l e
274 | Token
(k
,il
,tl
,l
) -> mkres builder k
[il
] [tl
] [] [] [l
] e
275 | Recursor
(k
,bil
,btl
,l
) -> mkres builder k
[] [] bil btl
[l
] e
in
277 let make_not_marked = function
278 Bind
(k
,il
,tl
,bil
,btl
,l
) -> Bind
(NotAllMarked
,il
,tl
,bil
,btl
,l
)
279 | Token
(k
,il
,tl
,l
) -> Token
(NotAllMarked
,il
,tl
,l
)
280 | Recursor
(k
,bil
,btl
,l
) -> Recursor
(NotAllMarked
,bil
,btl
,l
) in
282 let do_nothing builder r k e
= compute_result builder e
(k e
) in
284 let disj_cases disj starter code
fn ender
=
285 (* neutral_mcode used so starter and ender don't have an affect on
286 whether the code is considered all plus/minus, but so that they are
287 consider in the index list, which is needed to make a disj with
288 something in one branch and nothing in the other different from code
289 that just has the something (starter/ender enough, mids not needed
290 for this). Cannot agglomerate + code over | boundaries, because two -
291 cases might have different + code, and don't want to put the + code
292 together into one unit. *)
293 let make_not_marked =
296 (let min = Ast0.get_line disj
in
297 let max = Ast0.get_line_end disj
in
298 let (plus_min
,plus_max
) = find min (min-1) (max+1) in
299 if max > plus_max
then make_not_marked else (function x
-> x
))
300 else make_not_marked in
301 bind (neutral_mcode starter
)
302 (bind (List.fold_right
bind
303 (List.map
make_not_marked (List.map
fn code
))
305 (neutral_mcode ender
)) in
307 (* no whencode in plus tree so have to drop it *)
308 (* need special cases for dots, nests, and disjs *)
309 let expression r k e
=
310 compute_result Ast0.expr e
311 (match Ast0.unwrap e
with
312 Ast0.NestExpr
(starter
,exp
,ender
,whencode
,multi
) ->
313 k
(Ast0.rewrap e
(Ast0.NestExpr
(starter
,exp
,ender
,None
,multi
)))
314 | Ast0.Edots
(dots
,whencode
) ->
315 k
(Ast0.rewrap e
(Ast0.Edots
(dots
,None
)))
316 | Ast0.Ecircles
(dots
,whencode
) ->
317 k
(Ast0.rewrap e
(Ast0.Ecircles
(dots
,None
)))
318 | Ast0.Estars
(dots
,whencode
) ->
319 k
(Ast0.rewrap e
(Ast0.Estars
(dots
,None
)))
320 | Ast0.DisjExpr
(starter
,expr_list
,_,ender
) ->
321 disj_cases e starter expr_list r
.VT0.combiner_rec_expression ender
324 (* not clear why we have the next two cases, since DisjDecl and
325 DisjType shouldn't have been constructed yet, as they only come from isos *)
326 let declaration r k e
=
327 compute_result Ast0.decl e
328 (match Ast0.unwrap e
with
329 Ast0.DisjDecl
(starter
,decls
,_,ender
) ->
330 disj_cases e starter decls r
.VT0.combiner_rec_declaration ender
331 | Ast0.Ddots
(dots
,whencode
) ->
332 k
(Ast0.rewrap e
(Ast0.Ddots
(dots
,None
)))
333 (* Need special cases for the following so that the type will be
334 considered as a unit, rather than distributed around the
335 declared variable. This needs to be done because of the call to
336 compute_result, ie the processing of each term should make a
337 side-effect on the complete term structure as well as collecting
338 some information about it. So we have to visit each complete
339 term structure. In (all?) other such cases, we visit the terms
340 using rebuilder, which just visits the subterms, rather than
341 reordering their components. *)
342 | Ast0.Init
(stg
,ty
,id
,eq
,ini
,sem
) ->
343 bind (match stg
with Some stg
-> mcode stg
| _ -> option_default)
344 (bind (r
.VT0.combiner_rec_typeC ty
)
345 (bind (r
.VT0.combiner_rec_ident id
)
347 (bind (r
.VT0.combiner_rec_initialiser ini
) (mcode sem
)))))
348 | Ast0.UnInit
(stg
,ty
,id
,sem
) ->
349 bind (match stg
with Some stg
-> mcode stg
| _ -> option_default)
350 (bind (r
.VT0.combiner_rec_typeC ty
)
351 (bind (r
.VT0.combiner_rec_ident id
) (mcode sem
)))
355 compute_result Ast0.param e
356 (match Ast0.unwrap e
with
357 Ast0.Param
(ty
,Some id
) ->
358 (* needed for the same reason as in the Init and UnInit cases *)
359 bind (r
.VT0.combiner_rec_typeC ty
) (r
.VT0.combiner_rec_ident id
)
363 compute_result Ast0.typeC e
364 (match Ast0.unwrap e
with
365 Ast0.DisjType
(starter
,types
,_,ender
) ->
366 disj_cases e starter types r
.VT0.combiner_rec_typeC ender
369 let initialiser r k i
=
370 compute_result Ast0.ini i
371 (match Ast0.unwrap i
with
372 Ast0.Idots
(dots
,whencode
) ->
373 k
(Ast0.rewrap i
(Ast0.Idots
(dots
,None
)))
376 let case_line r k e
=
377 compute_result Ast0.case_line e
378 (match Ast0.unwrap e
with
379 Ast0.DisjCase
(starter
,case_list
,_,ender
) ->
380 disj_cases e starter case_list r
.VT0.combiner_rec_case_line ender
383 let statement r k s
=
384 compute_result Ast0.stmt s
385 (match Ast0.unwrap s
with
386 Ast0.Nest
(started
,stm_dots
,ender
,whencode
,multi
) ->
387 k
(Ast0.rewrap s
(Ast0.Nest
(started
,stm_dots
,ender
,[],multi
)))
388 | Ast0.Dots
(dots
,whencode
) ->
389 k
(Ast0.rewrap s
(Ast0.Dots
(dots
,[])))
390 | Ast0.Circles
(dots
,whencode
) ->
391 k
(Ast0.rewrap s
(Ast0.Circles
(dots
,[])))
392 | Ast0.Stars
(dots
,whencode
) ->
393 k
(Ast0.rewrap s
(Ast0.Stars
(dots
,[])))
394 | Ast0.Disj
(starter
,statement_dots_list
,_,ender
) ->
395 disj_cases s starter statement_dots_list r
.VT0.combiner_rec_statement_dots
397 (* cases for everything with extra mcode *)
398 | Ast0.FunDecl
((info
,bef
),_,_,_,_,_,_,_,_)
399 | Ast0.Decl
((info
,bef
),_) ->
400 bind (nc_mcode ((),(),info
,bef
,(),-1)) (k s
)
401 | Ast0.IfThen
(_,_,_,_,_,(info
,aft
))
402 | Ast0.IfThenElse
(_,_,_,_,_,_,_,(info
,aft
))
403 | Ast0.Iterator
(_,_,_,_,_,(info
,aft
))
404 | Ast0.While
(_,_,_,_,_,(info
,aft
))
405 | Ast0.For
(_,_,_,_,_,_,_,_,_,(info
,aft
)) ->
406 bind (k s
) (nc_mcode ((),(),info
,aft
,(),-1))
411 let do_top builder r k e
= compute_result builder e
(k e
) in
414 V0.flat_combiner
bind option_default
415 mcode mcode mcode mcode mcode mcode mcode mcode mcode mcode mcode mcode
416 (do_nothing Ast0.dotsExpr
) (do_nothing Ast0.dotsInit
)
417 (do_nothing Ast0.dotsParam
) (do_nothing Ast0.dotsStmt
)
418 (do_nothing Ast0.dotsDecl
) (do_nothing Ast0.dotsCase
)
419 (do_nothing Ast0.ident
) expression typeC initialiser param declaration
420 statement case_line (do_top Ast0.top
) in
421 combiner.VT0.combiner_rec_top_level code
423 (* --------------------------------------------------------------------- *)
424 (* Traverse the hash tables and find corresponding context nodes that have
425 the same context children *)
427 (* this is just a sanity check - really only need to look at the top-level
429 let equal_mcode (_,_,info1
,_,_,_) (_,_,info2
,_,_,_) =
430 info1
.Ast0.pos_info
.Ast0.offset = info2
.Ast0.pos_info
.Ast0.offset
432 let equal_option e1 e2
=
434 (Some x
, Some y
) -> equal_mcode x y
435 | (None
, None
) -> true
439 match (Ast0.unwrap d1
,Ast0.unwrap d2
) with
440 (Ast0.DOTS
(l1
),Ast0.DOTS
(l2
)) -> List.length l1
= List.length l2
441 | (Ast0.CIRCLES
(l1
),Ast0.CIRCLES
(l2
)) -> List.length l1
= List.length l2
442 | (Ast0.STARS
(l1
),Ast0.STARS
(l2
)) -> List.length l1
= List.length l2
445 let rec equal_ident i1 i2
=
446 match (Ast0.unwrap i1
,Ast0.unwrap i2
) with
447 (Ast0.Id
(name1
),Ast0.Id
(name2
)) -> equal_mcode name1 name2
448 | (Ast0.MetaId
(name1
,_,_),Ast0.MetaId
(name2
,_,_)) ->
449 equal_mcode name1 name2
450 | (Ast0.MetaFunc
(name1
,_,_),Ast0.MetaFunc
(name2
,_,_)) ->
451 equal_mcode name1 name2
452 | (Ast0.MetaLocalFunc
(name1
,_,_),Ast0.MetaLocalFunc
(name2
,_,_)) ->
453 equal_mcode name1 name2
454 | (Ast0.OptIdent
(_),Ast0.OptIdent
(_)) -> true
455 | (Ast0.UniqueIdent
(_),Ast0.UniqueIdent
(_)) -> true
458 let rec equal_expression e1 e2
=
459 match (Ast0.unwrap
e1,Ast0.unwrap e2
) with
460 (Ast0.Ident
(_),Ast0.Ident
(_)) -> true
461 | (Ast0.Constant
(const1
),Ast0.Constant
(const2
)) -> equal_mcode const1 const2
462 | (Ast0.FunCall
(_,lp1
,_,rp1
),Ast0.FunCall
(_,lp2
,_,rp2
)) ->
463 equal_mcode lp1 lp2
&& equal_mcode rp1 rp2
464 | (Ast0.Assignment
(_,op1
,_,_),Ast0.Assignment
(_,op2
,_,_)) ->
466 | (Ast0.CondExpr
(_,why1
,_,colon1
,_),Ast0.CondExpr
(_,why2
,_,colon2
,_)) ->
467 equal_mcode why1 why2
&& equal_mcode colon1 colon2
468 | (Ast0.Postfix
(_,op1
),Ast0.Postfix
(_,op2
)) -> equal_mcode op1 op2
469 | (Ast0.Infix
(_,op1
),Ast0.Infix
(_,op2
)) -> equal_mcode op1 op2
470 | (Ast0.Unary
(_,op1
),Ast0.Unary
(_,op2
)) -> equal_mcode op1 op2
471 | (Ast0.Binary
(_,op1
,_),Ast0.Binary
(_,op2
,_)) -> equal_mcode op1 op2
472 | (Ast0.Paren
(lp1
,_,rp1
),Ast0.Paren
(lp2
,_,rp2
)) ->
473 equal_mcode lp1 lp2
&& equal_mcode rp1 rp2
474 | (Ast0.ArrayAccess
(_,lb1
,_,rb1
),Ast0.ArrayAccess
(_,lb2
,_,rb2
)) ->
475 equal_mcode lb1 lb2
&& equal_mcode rb1 rb2
476 | (Ast0.RecordAccess
(_,pt1
,_),Ast0.RecordAccess
(_,pt2
,_)) ->
478 | (Ast0.RecordPtAccess
(_,ar1
,_),Ast0.RecordPtAccess
(_,ar2
,_)) ->
480 | (Ast0.Cast
(lp1
,_,rp1
,_),Ast0.Cast
(lp2
,_,rp2
,_)) ->
481 equal_mcode lp1 lp2
&& equal_mcode rp1 rp2
482 | (Ast0.SizeOfExpr
(szf1
,_),Ast0.SizeOfExpr
(szf2
,_)) ->
483 equal_mcode szf1 szf2
484 | (Ast0.SizeOfType
(szf1
,lp1
,_,rp1
),Ast0.SizeOfType
(szf2
,lp2
,_,rp2
)) ->
485 equal_mcode szf1 szf2
&& equal_mcode lp1 lp2
&& equal_mcode rp1 rp2
486 | (Ast0.TypeExp
(_),Ast0.TypeExp
(_)) -> true
487 | (Ast0.MetaErr
(name1
,_,_),Ast0.MetaErr
(name2
,_,_))
488 | (Ast0.MetaExpr
(name1
,_,_,_,_),Ast0.MetaExpr
(name2
,_,_,_,_))
489 | (Ast0.MetaExprList
(name1
,_,_),Ast0.MetaExprList
(name2
,_,_)) ->
490 equal_mcode name1 name2
491 | (Ast0.EComma
(cm1
),Ast0.EComma
(cm2
)) -> equal_mcode cm1 cm2
492 | (Ast0.DisjExpr
(starter1
,_,mids1
,ender1
),
493 Ast0.DisjExpr
(starter2
,_,mids2
,ender2
)) ->
494 equal_mcode starter1 starter2
&&
495 List.for_all2
equal_mcode mids1 mids2
&&
496 equal_mcode ender1 ender2
497 | (Ast0.NestExpr
(starter1
,_,ender1
,_,m1
),
498 Ast0.NestExpr
(starter2
,_,ender2
,_,m2
)) ->
499 equal_mcode starter1 starter2
&& equal_mcode ender1 ender2
&& m1
= m2
500 | (Ast0.Edots
(dots1
,_),Ast0.Edots
(dots2
,_))
501 | (Ast0.Ecircles
(dots1
,_),Ast0.Ecircles
(dots2
,_))
502 | (Ast0.Estars
(dots1
,_),Ast0.Estars
(dots2
,_)) -> equal_mcode dots1 dots2
503 | (Ast0.OptExp
(_),Ast0.OptExp
(_)) -> true
504 | (Ast0.UniqueExp
(_),Ast0.UniqueExp
(_)) -> true
507 let rec equal_typeC t1 t2
=
508 match (Ast0.unwrap t1
,Ast0.unwrap t2
) with
509 (Ast0.ConstVol
(cv1
,_),Ast0.ConstVol
(cv2
,_)) -> equal_mcode cv1 cv2
510 | (Ast0.BaseType
(ty1
,stringsa
),Ast0.BaseType
(ty2
,stringsb
)) ->
511 List.for_all2
equal_mcode stringsa stringsb
512 | (Ast0.Signed
(sign1
,_),Ast0.Signed
(sign2
,_)) ->
513 equal_mcode sign1 sign2
514 | (Ast0.Pointer
(_,star1
),Ast0.Pointer
(_,star2
)) ->
515 equal_mcode star1 star2
516 | (Ast0.Array
(_,lb1
,_,rb1
),Ast0.Array
(_,lb2
,_,rb2
)) ->
517 equal_mcode lb1 lb2
&& equal_mcode rb1 rb2
518 | (Ast0.EnumName
(kind1
,_),Ast0.EnumName
(kind2
,_)) ->
519 equal_mcode kind1 kind2
520 | (Ast0.StructUnionName
(kind1
,_),Ast0.StructUnionName
(kind2
,_)) ->
521 equal_mcode kind1 kind2
522 | (Ast0.FunctionType
(ty1
,lp1
,p1
,rp1
),Ast0.FunctionType
(ty2
,lp2
,p2
,rp2
)) ->
523 equal_mcode lp1 lp2
&& equal_mcode rp1 rp2
524 | (Ast0.StructUnionDef
(_,lb1
,_,rb1
),
525 Ast0.StructUnionDef
(_,lb2
,_,rb2
)) ->
526 equal_mcode lb1 lb2
&& equal_mcode rb1 rb2
527 | (Ast0.TypeName
(name1
),Ast0.TypeName
(name2
)) -> equal_mcode name1 name2
528 | (Ast0.MetaType
(name1
,_),Ast0.MetaType
(name2
,_)) ->
529 equal_mcode name1 name2
530 | (Ast0.DisjType
(starter1
,_,mids1
,ender1
),
531 Ast0.DisjType
(starter2
,_,mids2
,ender2
)) ->
532 equal_mcode starter1 starter2
&&
533 List.for_all2
equal_mcode mids1 mids2
&&
534 equal_mcode ender1 ender2
535 | (Ast0.OptType
(_),Ast0.OptType
(_)) -> true
536 | (Ast0.UniqueType
(_),Ast0.UniqueType
(_)) -> true
539 let equal_declaration d1 d2
=
540 match (Ast0.unwrap d1
,Ast0.unwrap d2
) with
541 (Ast0.Init
(stg1
,_,_,eq1
,_,sem1
),Ast0.Init
(stg2
,_,_,eq2
,_,sem2
)) ->
542 equal_option stg1 stg2
&& equal_mcode eq1 eq2
&& equal_mcode sem1 sem2
543 | (Ast0.UnInit
(stg1
,_,_,sem1
),Ast0.UnInit
(stg2
,_,_,sem2
)) ->
544 equal_option stg1 stg2
&& equal_mcode sem1 sem2
545 | (Ast0.MacroDecl
(nm1
,lp1
,_,rp1
,sem1
),Ast0.MacroDecl
(nm2
,lp2
,_,rp2
,sem2
)) ->
546 equal_mcode lp1 lp2
&& equal_mcode rp1 rp2
&& equal_mcode sem1 sem2
547 | (Ast0.TyDecl
(_,sem1
),Ast0.TyDecl
(_,sem2
)) -> equal_mcode sem1 sem2
548 | (Ast0.Ddots
(dots1
,_),Ast0.Ddots
(dots2
,_)) -> equal_mcode dots1 dots2
549 | (Ast0.OptDecl
(_),Ast0.OptDecl
(_)) -> true
550 | (Ast0.UniqueDecl
(_),Ast0.UniqueDecl
(_)) -> true
551 | (Ast0.DisjDecl
_,_) | (_,Ast0.DisjDecl
_) ->
552 failwith
"DisjDecl not expected here"
555 let equal_designator d1 d2
=
557 (Ast0.DesignatorField
(dot1
,_),Ast0.DesignatorField
(dot2
,_)) ->
558 equal_mcode dot1 dot2
559 | (Ast0.DesignatorIndex
(lb1
,_,rb1
),Ast0.DesignatorIndex
(lb2
,_,rb2
)) ->
560 (equal_mcode lb1 lb2
) && (equal_mcode rb1 rb2
)
561 | (Ast0.DesignatorRange
(lb1
,_,dots1
,_,rb1
),
562 Ast0.DesignatorRange
(lb2
,_,dots2
,_,rb2
)) ->
563 (equal_mcode lb1 lb2
) && (equal_mcode dots1 dots2
) &&
564 (equal_mcode rb1 rb2
)
567 let equal_initialiser i1 i2
=
568 match (Ast0.unwrap i1
,Ast0.unwrap i2
) with
569 (Ast0.MetaInit
(name1
,_),Ast0.MetaInit
(name2
,_)) ->
570 equal_mcode name1 name2
571 | (Ast0.InitExpr
(_),Ast0.InitExpr
(_)) -> true
572 | (Ast0.InitList
(lb1
,_,rb1
),Ast0.InitList
(lb2
,_,rb2
)) ->
573 (equal_mcode lb1 lb2
) && (equal_mcode rb1 rb2
)
574 | (Ast0.InitGccExt
(designators1
,eq1
,_),
575 Ast0.InitGccExt
(designators2
,eq2
,_)) ->
576 (List.for_all2
equal_designator designators1 designators2
) &&
577 (equal_mcode eq1 eq2
)
578 | (Ast0.InitGccName
(_,eq1
,_),Ast0.InitGccName
(_,eq2
,_)) ->
580 | (Ast0.IComma
(cm1
),Ast0.IComma
(cm2
)) -> equal_mcode cm1 cm2
581 | (Ast0.Idots
(d1
,_),Ast0.Idots
(d2
,_)) -> equal_mcode d1 d2
582 | (Ast0.OptIni
(_),Ast0.OptIni
(_)) -> true
583 | (Ast0.UniqueIni
(_),Ast0.UniqueIni
(_)) -> true
586 let equal_parameterTypeDef p1 p2
=
587 match (Ast0.unwrap p1
,Ast0.unwrap p2
) with
588 (Ast0.VoidParam
(_),Ast0.VoidParam
(_)) -> true
589 | (Ast0.Param
(_,_),Ast0.Param
(_,_)) -> true
590 | (Ast0.MetaParam
(name1
,_),Ast0.MetaParam
(name2
,_))
591 | (Ast0.MetaParamList
(name1
,_,_),Ast0.MetaParamList
(name2
,_,_)) ->
592 equal_mcode name1 name2
593 | (Ast0.PComma
(cm1
),Ast0.PComma
(cm2
)) -> equal_mcode cm1 cm2
594 | (Ast0.Pdots
(dots1
),Ast0.Pdots
(dots2
))
595 | (Ast0.Pcircles
(dots1
),Ast0.Pcircles
(dots2
)) -> equal_mcode dots1 dots2
596 | (Ast0.OptParam
(_),Ast0.OptParam
(_)) -> true
597 | (Ast0.UniqueParam
(_),Ast0.UniqueParam
(_)) -> true
600 let rec equal_statement s1 s2
=
601 match (Ast0.unwrap s1
,Ast0.unwrap s2
) with
602 (Ast0.FunDecl
(_,fninfo1
,_,lp1
,_,rp1
,lbrace1
,_,rbrace1
),
603 Ast0.FunDecl
(_,fninfo2
,_,lp2
,_,rp2
,lbrace2
,_,rbrace2
)) ->
604 (List.length fninfo1
) = (List.length fninfo2
) &&
605 List.for_all2 equal_fninfo fninfo1 fninfo2
&&
606 equal_mcode lp1 lp2
&& equal_mcode rp1 rp2
&&
607 equal_mcode lbrace1 lbrace2
&& equal_mcode rbrace1 rbrace2
608 | (Ast0.Decl
(_,_),Ast0.Decl
(_,_)) -> true
609 | (Ast0.Seq
(lbrace1
,_,rbrace1
),Ast0.Seq
(lbrace2
,_,rbrace2
)) ->
610 equal_mcode lbrace1 lbrace2
&& equal_mcode rbrace1 rbrace2
611 | (Ast0.ExprStatement
(_,sem1
),Ast0.ExprStatement
(_,sem2
)) ->
612 equal_mcode sem1 sem2
613 | (Ast0.IfThen
(iff1
,lp1
,_,rp1
,_,_),Ast0.IfThen
(iff2
,lp2
,_,rp2
,_,_)) ->
614 equal_mcode iff1 iff2
&& equal_mcode lp1 lp2
&& equal_mcode rp1 rp2
615 | (Ast0.IfThenElse
(iff1
,lp1
,_,rp1
,_,els1
,_,_),
616 Ast0.IfThenElse
(iff2
,lp2
,_,rp2
,_,els2
,_,_)) ->
617 equal_mcode iff1 iff2
&&
618 equal_mcode lp1 lp2
&& equal_mcode rp1 rp2
&& equal_mcode els1 els2
619 | (Ast0.While
(whl1
,lp1
,_,rp1
,_,_),Ast0.While
(whl2
,lp2
,_,rp2
,_,_)) ->
620 equal_mcode whl1 whl2
&& equal_mcode lp1 lp2
&& equal_mcode rp1 rp2
621 | (Ast0.Do
(d1
,_,whl1
,lp1
,_,rp1
,sem1
),Ast0.Do
(d2
,_,whl2
,lp2
,_,rp2
,sem2
)) ->
622 equal_mcode whl1 whl2
&& equal_mcode d1 d2
&&
623 equal_mcode lp1 lp2
&& equal_mcode rp1 rp2
&& equal_mcode sem1 sem2
624 | (Ast0.For
(fr1
,lp1
,_,sem11
,_,sem21
,_,rp1
,_,_),
625 Ast0.For
(fr2
,lp2
,_,sem12
,_,sem22
,_,rp2
,_,_)) ->
626 equal_mcode fr1 fr2
&& equal_mcode lp1 lp2
&&
627 equal_mcode sem11 sem12
&& equal_mcode sem21 sem22
&&
629 | (Ast0.Iterator
(nm1
,lp1
,_,rp1
,_,_),Ast0.Iterator
(nm2
,lp2
,_,rp2
,_,_)) ->
630 equal_mcode lp1 lp2
&& equal_mcode rp1 rp2
631 | (Ast0.Switch
(switch1
,lp1
,_,rp1
,lb1
,_,_,rb1
),
632 Ast0.Switch
(switch2
,lp2
,_,rp2
,lb2
,_,_,rb2
)) ->
633 equal_mcode switch1 switch2
&& equal_mcode lp1 lp2
&&
634 equal_mcode rp1 rp2
&& equal_mcode lb1 lb2
&&
636 | (Ast0.Break
(br1
,sem1
),Ast0.Break
(br2
,sem2
)) ->
637 equal_mcode br1 br2
&& equal_mcode sem1 sem2
638 | (Ast0.Continue
(cont1
,sem1
),Ast0.Continue
(cont2
,sem2
)) ->
639 equal_mcode cont1 cont2
&& equal_mcode sem1 sem2
640 | (Ast0.Label
(_,dd1
),Ast0.Label
(_,dd2
)) ->
642 | (Ast0.Goto
(g1
,_,sem1
),Ast0.Goto
(g2
,_,sem2
)) ->
643 equal_mcode g1 g2
&& equal_mcode sem1 sem2
644 | (Ast0.Return
(ret1
,sem1
),Ast0.Return
(ret2
,sem2
)) ->
645 equal_mcode ret1 ret2
&& equal_mcode sem1 sem2
646 | (Ast0.ReturnExpr
(ret1
,_,sem1
),Ast0.ReturnExpr
(ret2
,_,sem2
)) ->
647 equal_mcode ret1 ret2
&& equal_mcode sem1 sem2
648 | (Ast0.MetaStmt
(name1
,_),Ast0.MetaStmt
(name2
,_))
649 | (Ast0.MetaStmtList
(name1
,_),Ast0.MetaStmtList
(name2
,_)) ->
650 equal_mcode name1 name2
651 | (Ast0.Disj
(starter1
,_,mids1
,ender1
),Ast0.Disj
(starter2
,_,mids2
,ender2
)) ->
652 equal_mcode starter1 starter2
&&
653 List.for_all2
equal_mcode mids1 mids2
&&
654 equal_mcode ender1 ender2
655 | (Ast0.Nest
(starter1
,_,ender1
,_,m1
),Ast0.Nest
(starter2
,_,ender2
,_,m2
)) ->
656 equal_mcode starter1 starter2
&& equal_mcode ender1 ender2
&& m1
= m2
657 | (Ast0.Exp
(_),Ast0.Exp
(_)) -> true
658 | (Ast0.TopExp
(_),Ast0.TopExp
(_)) -> true
659 | (Ast0.Ty
(_),Ast0.Ty
(_)) -> true
660 | (Ast0.TopInit
(_),Ast0.TopInit
(_)) -> true
661 | (Ast0.Dots
(d1
,_),Ast0.Dots
(d2
,_))
662 | (Ast0.Circles
(d1
,_),Ast0.Circles
(d2
,_))
663 | (Ast0.Stars
(d1
,_),Ast0.Stars
(d2
,_)) -> equal_mcode d1 d2
664 | (Ast0.Include
(inc1
,name1
),Ast0.Include
(inc2
,name2
)) ->
665 equal_mcode inc1 inc2
&& equal_mcode name1 name2
666 | (Ast0.Define
(def1
,_,_,_),Ast0.Define
(def2
,_,_,_)) ->
667 equal_mcode def1 def2
668 | (Ast0.OptStm
(_),Ast0.OptStm
(_)) -> true
669 | (Ast0.UniqueStm
(_),Ast0.UniqueStm
(_)) -> true
672 and equal_fninfo x y
=
674 (Ast0.FStorage
(s1
),Ast0.FStorage
(s2
)) -> equal_mcode s1 s2
675 | (Ast0.FType
(_),Ast0.FType
(_)) -> true
676 | (Ast0.FInline
(i1
),Ast0.FInline
(i2
)) -> equal_mcode i1 i2
677 | (Ast0.FAttr
(i1
),Ast0.FAttr
(i2
)) -> equal_mcode i1 i2
680 let equal_case_line c1 c2
=
681 match (Ast0.unwrap c1
,Ast0.unwrap c2
) with
682 (Ast0.Default
(def1
,colon1
,_),Ast0.Default
(def2
,colon2
,_)) ->
683 equal_mcode def1 def2
&& equal_mcode colon1 colon2
684 | (Ast0.Case
(case1
,_,colon1
,_),Ast0.Case
(case2
,_,colon2
,_)) ->
685 equal_mcode case1 case2
&& equal_mcode colon1 colon2
686 | (Ast0.DisjCase
(starter1
,_,mids1
,ender1
),
687 Ast0.DisjCase
(starter2
,_,mids2
,ender2
)) ->
688 equal_mcode starter1 starter2
&&
689 List.for_all2
equal_mcode mids1 mids2
&&
690 equal_mcode ender1 ender2
691 | (Ast0.OptCase
(_),Ast0.OptCase
(_)) -> true
694 let rec equal_top_level t1 t2
=
695 match (Ast0.unwrap t1
,Ast0.unwrap t2
) with
696 (Ast0.DECL
(_),Ast0.DECL
(_)) -> true
697 | (Ast0.FILEINFO
(old_file1
,new_file1
),Ast0.FILEINFO
(old_file2
,new_file2
)) ->
698 equal_mcode old_file1 old_file2
&& equal_mcode new_file1 new_file2
699 | (Ast0.CODE
(_),Ast0.CODE
(_)) -> true
700 | (Ast0.ERRORWORDS
(_),Ast0.ERRORWORDS
(_)) -> true
703 let root_equal e1 e2
=
705 (Ast0.DotsExprTag
(d1
),Ast0.DotsExprTag
(d2
)) -> dots equal_expression d1 d2
706 | (Ast0.DotsParamTag
(d1
),Ast0.DotsParamTag
(d2
)) ->
707 dots equal_parameterTypeDef d1 d2
708 | (Ast0.DotsStmtTag
(d1
),Ast0.DotsStmtTag
(d2
)) -> dots equal_statement d1 d2
709 | (Ast0.DotsDeclTag
(d1
),Ast0.DotsDeclTag
(d2
)) -> dots equal_declaration d1 d2
710 | (Ast0.DotsCaseTag
(d1
),Ast0.DotsCaseTag
(d2
)) -> dots equal_case_line d1 d2
711 | (Ast0.IdentTag
(i1
),Ast0.IdentTag
(i2
)) -> equal_ident i1 i2
712 | (Ast0.ExprTag
(e1),Ast0.ExprTag
(e2
)) -> equal_expression e1 e2
713 | (Ast0.ArgExprTag
(d
),_) -> failwith
"not possible - iso only"
714 | (Ast0.TypeCTag
(t1
),Ast0.TypeCTag
(t2
)) -> equal_typeC t1 t2
715 | (Ast0.ParamTag
(p1
),Ast0.ParamTag
(p2
)) -> equal_parameterTypeDef p1 p2
716 | (Ast0.InitTag
(d1
),Ast0.InitTag
(d2
)) -> equal_initialiser d1 d2
717 | (Ast0.DeclTag
(d1
),Ast0.DeclTag
(d2
)) -> equal_declaration d1 d2
718 | (Ast0.StmtTag
(s1
),Ast0.StmtTag
(s2
)) -> equal_statement s1 s2
719 | (Ast0.TopTag
(t1
),Ast0.TopTag
(t2
)) -> equal_top_level t1 t2
720 | (Ast0.IsoWhenTag
(_),_) | (_,Ast0.IsoWhenTag
(_))
721 | (Ast0.IsoWhenTTag
(_),_) | (_,Ast0.IsoWhenTTag
(_))
722 | (Ast0.IsoWhenFTag
(_),_) | (_,Ast0.IsoWhenFTag
(_)) ->
723 failwith
"only within iso phase"
726 let default_context _ =
727 Ast0.CONTEXT
(ref(Ast.NOTHING
,
728 Ast0.default_token_info
,Ast0.default_token_info
))
730 let traverse minus_table plus_table
=
735 let (plus_e
,plus_l
) = Hashtbl.find plus_table key
in
736 if root_equal e plus_e
&&
737 List.for_all
(function x
-> x
)
738 (List.map2
Common.equal_set l plus_l
)
740 let i = Ast0.fresh_index
() in
741 (set_index e
i; set_index plus_e
i;
742 set_mcodekind e
(default_context());
743 set_mcodekind plus_e
(default_context()))
744 with Not_found
-> ())
747 (* --------------------------------------------------------------------- *)
748 (* contextify the whencode *)
752 let option_default = () in
754 let do_nothing r k e
= Ast0.set_mcodekind e
(default_context()); k e
in
756 V0.flat_combiner
bind option_default
757 mcode mcode mcode mcode mcode mcode mcode mcode mcode mcode mcode mcode
758 do_nothing do_nothing do_nothing do_nothing do_nothing do_nothing
759 do_nothing do_nothing do_nothing do_nothing do_nothing do_nothing
760 do_nothing do_nothing do_nothing
762 let contextify_whencode =
764 let option_default = () in
766 let expression r k e
=
768 match Ast0.unwrap e
with
769 Ast0.NestExpr
(_,_,_,Some whencode
,_)
770 | Ast0.Edots
(_,Some whencode
)
771 | Ast0.Ecircles
(_,Some whencode
)
772 | Ast0.Estars
(_,Some whencode
) ->
773 contextify_all.VT0.combiner_rec_expression whencode
776 let initialiser r k
i =
777 match Ast0.unwrap
i with
778 Ast0.Idots
(dots,Some whencode
) ->
779 contextify_all.VT0.combiner_rec_initialiser whencode
782 let whencode = function
783 Ast0.WhenNot sd
-> contextify_all.VT0.combiner_rec_statement_dots sd
784 | Ast0.WhenAlways s
-> contextify_all.VT0.combiner_rec_statement s
785 | Ast0.WhenModifier
(_) -> ()
786 | Ast0.WhenNotTrue
(e
) -> contextify_all.VT0.combiner_rec_expression e
787 | Ast0.WhenNotFalse
(e
) -> contextify_all.VT0.combiner_rec_expression e
in
789 let statement r k
(s
: Ast0.statement) =
791 match Ast0.unwrap s
with
792 Ast0.Nest
(_,_,_,whn
,_)
793 | Ast0.Dots
(_,whn
) | Ast0.Circles
(_,whn
) | Ast0.Stars
(_,whn
) ->
794 List.iter
whencode whn
798 V0.combiner bind option_default
799 {V0.combiner_functions
with
800 VT0.combiner_exprfn
= expression;
801 VT0.combiner_initfn
= initialiser;
802 VT0.combiner_stmtfn
= statement} in
803 combiner.VT0.combiner_rec_top_level
805 (* --------------------------------------------------------------------- *)
807 (* the first int list is the tokens in the node, the second is the tokens
808 in the descendents *)
810 (Hashtbl.create
(50) : (int list
, Ast0.anything
* int list list
) Hashtbl.t
)
812 (Hashtbl.create
(50) : (int list
, Ast0.anything
* int list list
) Hashtbl.t
)
815 match Ast0.unwrap t
with
817 | Ast0.FILEINFO
(_) -> true
818 | Ast0.ERRORWORDS
(_) -> false
819 | Ast0.CODE
(_) -> true
820 | Ast0.OTHER
(_) -> failwith
"unexpected top level code"
822 (* ------------------------------------------------------------------- *)
823 (* alignment of minus and plus *)
825 let concat = function
829 let rec loop = function
832 (match Ast0.unwrap x
with
833 Ast0.DECL
(s
) -> let stms = loop rest
in s
::stms
835 let stms = loop rest
in
836 (match Ast0.unwrap ss
with
837 Ast0.DOTS
(d
) -> d
@stms
838 | _ -> failwith
"no dots allowed in pure plus code")
839 | _ -> failwith
"plus code is being discarded") in
841 Compute_lines.compute_statement_dots_lines
false
842 (Ast0.rewrap
(List.hd l
) (Ast0.DOTS
(loop l
))) in
843 [Ast0.rewrap
res (Ast0.CODE
res)]
845 let collect_up_to m plus
=
846 let minfo = Ast0.get_info m
in
847 let mend = minfo.Ast0.pos_info
.Ast0.logical_end
in
848 let rec loop = function
851 let pinfo = Ast0.get_info p
in
852 let pstart = pinfo.Ast0.pos_info
.Ast0.logical_start
in
855 else let (plus
,rest
) = loop plus
in (p
::plus
,rest
) in
856 let (plus
,rest
) = loop plus
in
859 let realign minus plus
=
860 let rec loop = function
861 ([],_) -> failwith
"not possible, some context required"
862 | ([m
],p
) -> ([m
],concat p
)
864 let (p
,plus
) = collect_up_to m plus
in
865 let (minus
,plus
) = loop (minus
,plus
) in
869 (* ------------------------------------------------------------------- *)
870 (* check compatible: check that at the top level the minus and plus code is
871 of the same kind. Could go further and make the correspondence between the
872 code between ...s. *)
874 let isonly f l
= match Ast0.undots l
with [s
] -> f s
| _ -> false
876 let isall f l
= List.for_all
(isonly f
) l
879 match Ast0.unwrap s
with
881 | Ast0.Disj
(_,stmts
,_,_) -> isall is_exp stmts
885 match Ast0.unwrap s
with
887 | Ast0.Disj
(_,stmts
,_,_) -> isall is_ty stmts
891 match Ast0.unwrap s
with
892 Ast0.TopInit
(e
) -> true
893 | Ast0.Disj
(_,stmts
,_,_) -> isall is_init stmts
897 match Ast0.unwrap s
with
898 Ast0.Decl
(_,e
) -> true
899 | Ast0.FunDecl
(_,_,_,_,_,_,_,_,_) -> true
900 | Ast0.Disj
(_,stmts
,_,_) -> isall is_decl stmts
903 let rec is_fndecl s
=
904 match Ast0.unwrap s
with
905 Ast0.FunDecl
(_,_,_,_,_,_,_,_,_) -> true
906 | Ast0.Disj
(_,stmts
,_,_) -> isall is_fndecl stmts
909 let rec is_toplevel s
=
910 match Ast0.unwrap s
with
911 Ast0.Decl
(_,e
) -> true
912 | Ast0.FunDecl
(_,_,_,_,_,_,_,_,_) -> true
913 | Ast0.Disj
(_,stmts
,_,_) -> isall is_toplevel stmts
914 | Ast0.ExprStatement
(fc
,_) ->
915 (match Ast0.unwrap fc
with
916 Ast0.FunCall
(_,_,_,_) -> true
918 | Ast0.Include
(_,_) -> true
919 | Ast0.Define
(_,_,_,_) -> true
922 let check_compatible m p
=
926 "incompatible minus and plus code starting on lines %d and %d"
927 (Ast0.get_line m
) (Ast0.get_line p
)) in
928 match (Ast0.unwrap m
, Ast0.unwrap p
) with
929 (Ast0.DECL
(decl1
),Ast0.DECL
(decl2
)) ->
930 if not
(is_decl decl1
&& is_decl decl2
)
932 | (Ast0.DECL
(decl1
),Ast0.CODE
(code2
)) ->
933 let v1 = is_decl decl1
in
934 let v2 = List.for_all
is_toplevel (Ast0.undots code2
) in
935 if !Flag.make_hrule
= None
&& v1 && not
v2 then fail()
936 | (Ast0.CODE
(code1
),Ast0.DECL
(decl2
)) ->
937 let v1 = List.for_all
is_toplevel (Ast0.undots code1
) in
938 let v2 = is_decl decl2
in
939 if v1 && not
v2 then fail()
940 | (Ast0.CODE
(code1
),Ast0.CODE
(code2
)) ->
941 let v1 = isonly is_init code1
in
942 let v2a = isonly is_init code2
in
943 let v2b = isonly is_exp code2
in
945 then (if not
(v2a || v2b) then fail())
947 let testers = [is_exp;is_ty] in
950 let v1 = isonly tester code1
in
951 let v2 = isonly tester code2
in
952 if (v1 && not
v2) or (!Flag.make_hrule
= None
&& v2 && not
v1)
955 let v1 = isonly is_fndecl code1
in
956 let v2 = List.for_all
is_toplevel (Ast0.undots code2
) in
957 if !Flag.make_hrule
= None
&& v1 && not
v2 then fail()
958 | (Ast0.FILEINFO
(_,_),Ast0.FILEINFO
(_,_)) -> ()
959 | (Ast0.OTHER
(_),Ast0.OTHER
(_)) -> ()
962 (* ------------------------------------------------------------------- *)
964 (* returns a list of corresponding minus and plus trees *)
965 let context_neg minus plus
=
966 Hashtbl.clear
minus_table;
967 Hashtbl.clear
plus_table;
968 List.iter
contextify_whencode minus
;
969 let (minus
,plus
) = realign minus plus
in
970 let rec loop = function
973 failwith
(Printf.sprintf
"%d plus things remaining" (List.length l
))
980 (function _ -> Ast0.MINUS
(ref([],Ast0.default_token_info
)))
984 | (((m
::minus
) as mall
),((p
::plus
) as pall
)) ->
985 let minfo = Ast0.get_info m
in
986 let pinfo = Ast0.get_info p
in
987 let mstart = minfo.Ast0.pos_info
.Ast0.logical_start
in
988 let mend = minfo.Ast0.pos_info
.Ast0.logical_end
in
989 let pstart = pinfo.Ast0.pos_info
.Ast0.logical_start
in
990 let pend = pinfo.Ast0.pos_info
.Ast0.logical_end
in
991 if (iscode m
or iscode p
) &&
992 (mend + 1 = pstart or pend + 1 = mstart or (* adjacent *)
993 (mstart <= pstart && mend >= pstart) or
994 (pstart <= mstart && pend >= mstart)) (* overlapping or nested *)
997 (* ensure that the root of each tree has a unique index,
998 although it might get overwritten if the node is a context
1000 let i = Ast0.fresh_index
() in
1001 Ast0.set_index m
i; Ast0.set_index p
i;
1002 check_compatible m p
;
1003 collect_plus_lines p
;
1006 (function _ -> Ast0.MINUS
(ref([],Ast0.default_token_info
)))
1008 let _ = classify false (function c
-> Ast0.PLUS c
) plus_table p
in
1009 traverse minus_table plus_table;
1010 (m
,p
)::loop(minus
,plus
)
1013 if not
(iscode m
or iscode p
)
1014 then loop(minus
,plus
)
1022 (function _ -> Ast0.MINUS
(ref([],Ast0.default_token_info
)))
1026 else loop(mall
,plus
) in