9 val top_down_run : Ata.t -> Tree.t -> Tree.node -> result_set
10 val bottom_up_run : Ata.t -> Tree.t -> Compile.text_query * string -> result_set
11 val grammar_run : Ata.t -> Grammar2.t -> unit -> result_set
12 val naive_top_down_run : Ata.t -> Tree.t -> Tree.node -> result_set
13 val twopass_top_down_run : Ata.t -> Tree.t -> Tree.node -> result_set
16 module Make (U : ResJIT.S) : S with type result_set = U.NS.t =
19 type result_set = U.NS.t;;
21 let eval_form auto s1 s2 f =
23 match Formula.expr f with
24 | Formula.False | Formula.True | Formula.Pred _ -> f, []
25 | Formula.Atom(`Left, b, q) ->
26 Formula.of_bool (b == (StateSet.mem q s1)),
27 if b && StateSet.mem q auto.topdown_marking_states then [ResJIT.LEFT q] else []
28 | Formula.Atom (`Right, b, q) ->
29 Formula.of_bool(b == (StateSet.mem q s2)),
30 if b && StateSet.mem q auto.topdown_marking_states then [ResJIT.RIGHT q] else []
31 | Formula.Atom (`Epsilon, _, _) -> assert false
33 | Formula.Or(f1, f2) ->
34 let b1, i1 = loop f1 in
35 let b2, i2 = loop f2 in
36 Formula.or_pred b1 b2, i1 @ i2
37 | Formula.And(f1, f2) ->
38 let b1, i1 = loop f1 in
39 let b2, i2 = loop f2 in
40 Formula.and_pred b1 b2, i1 @ i2
45 let eval_trans auto s1 s2 trans =
46 LOG(__ "top-down-run" 3 "Evaluating transition list:@\n%a" Translist.print trans);
48 (fun t ((a_st, a_op, a_todo) as acc)->
49 let q, _, m, f = Transition.node t in
50 let form, ops = eval_form auto s1 s2 f in
51 match Formula.expr form with
54 (q, (if m then (ResJIT.SELF() :: ops) else ops)):: a_op,
56 | Formula.False -> acc
57 | Formula.Pred p -> a_st, a_op,
58 (p.Tree.Predicate.node, q, [(q,(if m then (ResJIT.SELF() :: ops) else ops))]) :: a_todo
60 ) trans (StateSet.empty, [], [])
67 type opcode = (t -> t -> t -> Tree.t -> Tree.node -> StateSet.t * t)
69 type t = opcode Cache.Lvl3.t
71 let dummy _ _ _ _ _ = failwith "Uninitialized L3JIT"
76 Cache.Lvl3.iteri (fun _ _ _ _ b -> if not b then incr count) a;
77 Logger.print err_formatter "@?L3JIT: %i used entries@\n@?" !count
79 let v = Cache.Lvl3.create 1024 dummy in
80 if !Options.verbose then at_exit (fun () -> show_stats v);
83 let find t tlist s1 s2 =
85 (Uid.to_int s2.StateSet.Node.id)
86 (Uid.to_int s1.StateSet.Node.id)
87 (Uid.to_int tlist.Translist.Node.id)
89 let add t tlist s1 s2 v =
91 (Uid.to_int s2.StateSet.Node.id)
92 (Uid.to_int s1.StateSet.Node.id)
93 (Uid.to_int tlist.Translist.Node.id)
96 let compile auto trl s1 s2 =
97 let orig_s1, orig_s2 =
98 Translist.fold (fun t (a1, a2) ->
99 let _, _, _, f = Transition.node t in
100 let fs1, fs2 = Formula.st f in
101 (StateSet.union a1 fs1, StateSet.union a2 fs2)
102 ) trl (StateSet.empty, StateSet.empty)
104 let ns1 = StateSet.inter s1 orig_s1
105 and ns2 = StateSet.inter s2 orig_s2 in
106 let res, ops, todo = eval_trans auto ns1 ns2 trl in
107 let code, not_marking = ResJIT.compile ops in
108 let todo_code, todo_notmarking =
109 List.fold_left (fun (l, b) (p, q, o) -> let c, b' = ResJIT.compile o in
110 (p, q, c)::l, b && b')
111 ([], not_marking) todo
113 let opcode = res, code, todo_notmarking, todo_code in
116 let choose_slot empty sl1 sl2 =
117 if sl1 != empty then sl1
118 else if sl2 != empty then sl2
119 else Array.copy empty
121 let gen_code auto tlist s1 s2 =
122 let res, code, not_marking, todo_code = compile auto tlist s1 s2 in
124 if todo_code == [] then begin
125 if not_marking then begin fun empty_slot sl1 sl2 _ node ->
126 if sl1 == empty_slot && sl2 == empty_slot then res, empty_slot
128 let sl = choose_slot empty_slot sl1 sl2 in
129 U.exec sl sl1 sl2 node code;
131 end else (* marking *) begin fun empty_slot sl1 sl2 _ node ->
132 let sl = choose_slot empty_slot sl1 sl2 in
133 U.exec sl sl1 sl2 node code;
136 end else (* todo_code *) begin fun empty_slot sl1 sl2 tree node ->
137 let sl = choose_slot empty_slot sl1 sl2 in
138 LOG( __ "bottom-up" 3 "Has todo code\n");
139 U.exec sl sl1 sl2 node code;
141 (fun ares (p, q, code) ->
142 if !p tree node then begin
143 if code != ResJIT.Nil then U.exec sl sl1 sl2 node code;
146 else ares) res todo_code, sl
151 let cache_apply cache auto tlist s1 s2 =
152 let f = gen_code auto tlist s1 s2 in
153 LOG(__ "grammar" 2 "Inserting: %i, %a, %a\n%!"
154 (Uid.to_int tlist.Translist.Node.id) StateSet.print s1 StateSet.print s2);
155 add cache tlist s1 s2 f; f
158 DEFINE LOOP (t, states, ctx) = (
160 LOG(__ "top-down-run" 3
161 "Entering node %i with loop (tag %s, context %i) with states %a"
163 (Tag.to_string (Tree.tag tree _t))
165 (StateSet.print) (states));
166 if _t == Tree.nil then nil_res
168 let tag = Tree.tag tree _t in
170 _t tag (states) (ctx) (L2JIT.find cache2 tag (states))
173 DEFINE LOOP_TAG (t, states, tag, ctx) = (
174 let _t = (t) in (* to avoid duplicating expression t *)
175 LOG(__ "top-down-run" 3
176 "Entering node %i with loop_tag (tag %s, context %i) with states %a"
178 (Tag.to_string (tag))
180 (StateSet.print) (states));
181 if _t == Tree.nil then nil_res
184 _t (tag) (states) (ctx) (L2JIT.find cache2 (tag) (states)))
187 let top_down_run auto tree root states ctx =
188 let res_len = StateSet.max_elt auto.states + 1 in
189 let empty_slot = Array.create res_len U.NS.empty in
190 let nil_res = auto.bottom_states, empty_slot in
192 let mark_subtree s subtree =
193 if subtree != U.NS.empty then
194 let r = Array.copy empty_slot in
195 r.(auto.last) <- subtree;
200 let cache3 = L3JIT.create () in
201 let l3jit_dispatch trl s1 s2 t sl1 sl2 =
202 let f = L3JIT.find cache3 trl s1 s2 in
203 if f == L3JIT.dummy then (L3JIT.cache_apply cache3 auto trl s1 s2) empty_slot sl1 sl2 tree t
204 else f empty_slot sl1 sl2 tree t
206 let cache2 = L2JIT.create () in
207 let rec loop t states ctx =
208 if t == Tree.nil then nil_res
210 let tag = Tree.tag tree t in
212 t tag (states) (ctx) (L2JIT.find cache2 tag (states))
213 and loop_tag t states ctx tag =
214 if t == Tree.nil then nil_res
217 t (tag) (states) (ctx) (L2JIT.find cache2 (tag) (states))
219 and l2jit_dispatch t tag states ctx opcode =
221 | L2JIT.RETURN () -> nil_res
222 | L2JIT.LEFT (tr_list, instr) ->
224 l2jit_dispatch_instr t (Tree.closing tree t) instr
226 l3jit_dispatch tr_list res1 auto.bottom_states t slot1 empty_slot
228 | L2JIT.RIGHT (tr_list, instr) ->
230 l2jit_dispatch_instr t ctx instr
232 l3jit_dispatch tr_list auto.bottom_states res2 t empty_slot slot2
234 | L2JIT.BOTH (tr_list, instr1, instr2) ->
236 l2jit_dispatch_instr t (Tree.closing tree t) instr1
239 l2jit_dispatch_instr t ctx instr2
241 l3jit_dispatch tr_list res1 res2 t slot1 slot2
243 LOG(__ "top-down-run" 3
244 "Top-down cache miss for configuration %s %a"
245 (Tag.to_string tag) StateSet.print states);
246 l2jit_dispatch t tag states ctx
247 (L2JIT.compile cache2 auto tree tag states)
249 and l2jit_dispatch_instr t ctx instr =
250 LOG(__ "top-down-run" 3 "Dispatching instr: %a on node %i (context=%i)"
251 L2JIT.print_jump instr (Node.to_int t) (Node.to_int ctx));
253 | L2JIT.NOP _ -> nil_res
254 | L2JIT.FIRST_CHILD s -> loop (Tree.first_child tree t) s ctx
255 | L2JIT.NEXT_SIBLING s -> loop (Tree.next_sibling tree t) s ctx
257 | L2JIT.FIRST_ELEMENT s -> loop (Tree.first_element tree t) s ctx
258 | L2JIT.NEXT_ELEMENT s -> loop (Tree.next_element tree t) s ctx
260 | L2JIT.TAGGED_DESCENDANT (s, tag) ->
261 loop_tag (Tree.tagged_descendant tree t tag) s ctx tag
263 | L2JIT.TAGGED_FOLLOWING (s, tag) ->
264 loop_tag (Tree.tagged_following_before tree t tag ctx) s ctx tag
266 | L2JIT.SELECT_DESCENDANT (s, _, us) ->
267 loop (Tree.select_descendant tree t us) s ctx
269 | L2JIT.SELECT_FOLLOWING (s, pt, us) ->
270 loop (Tree.select_following_before tree t us ctx) s ctx
272 | L2JIT.TAGGED_CHILD (s, tag) ->
273 loop_tag (Tree.tagged_child tree t tag) s ctx tag
275 | L2JIT.TAGGED_SIBLING (s, tag) ->
276 loop_tag (Tree.tagged_sibling tree t tag) s ctx tag
278 | L2JIT.SELECT_CHILD (s, _, us) ->
279 loop (Tree.select_child tree t us) s ctx
281 | L2JIT.SELECT_SIBLING (s, _, us) ->
282 loop (Tree.select_sibling tree t us) s ctx
284 | L2JIT.TAGGED_SUBTREE(s, tag) ->
285 mark_subtree s (U.NS.subtree_tags tree t tag)
287 | L2JIT.ELEMENT_SUBTREE(s) ->
288 mark_subtree s (U.NS.subtree_elements tree t)
290 let r = loop root states ctx in
293 let full_top_down_run auto states tree root =
294 top_down_run auto tree root states (Tree.closing tree root)
296 let top_down_run auto tree root =
298 let res, slot = full_top_down_run auto auto.init tree root in
299 slot.(StateSet.min_elt auto.topdown_marking_states)
302 (*** Bottom-up evaluation function **)
304 let eval_trans auto tree parent res1 res2 = assert false
306 let rec uniq = function
307 | ([] | [ _ ]) as l -> l
308 | e1 :: ((e2 :: ll) as l) -> if e1 == e2 then uniq l
309 else e1 :: e2 :: (uniq ll);;
311 DEFINE BOTTOM_UP_NEXT(node, rest, stop) =
312 (let ___fs = Tree.first_child tree node in
314 if ___fs == Tree.nil then nil_res
315 else full_top_down_run auto states tree ___fs
317 move_up node ___res1 true rest stop)
320 let bottom_up_run auto tree (query, pat) =
321 let array = time ~msg:"Timing text query" (Tree.full_text_query query tree) pat in
322 let leaves = Array.to_list array in
323 let states = auto.states in
324 let res_len = (StateSet.max_elt states) + 1 in
325 let empty_slot = Array.create res_len U.NS.empty in
326 let nil_res = auto.bottom_states, empty_slot in
327 let cache = Cache.Lvl3.create 0 L3JIT.dummy in
328 let rec move_up node res is_left rest stop =
329 LOG(__ "bottom-up" 2 "move_up: node %i is_left %b stop %i\n"
330 (Node.to_int node) is_left (Node.to_int stop));
331 if node == stop then res, rest
333 (*let prev_sibling = Tree.prev_sibling tree node in *)
334 let is_left' = Tree.is_first_child tree node (*prev_sibling == Tree.nil*) in
335 (*TODO: unsound in case of following-sibling moves
336 should replace the else by previous_sibling and walk up the sequence of
338 let parent = if is_left' then Tree.parent tree node else
339 let p = Tree.first_child tree (Tree.parent tree node) in
340 if p < stop then stop else p
342 let (s1, sl1), (s2, sl2), rest' =
343 if is_left then match rest with
344 [] -> res, nil_res, rest
346 if Tree.is_right_descendant tree node next
348 let res2, rest' = (*bottom_up_next*) BOTTOM_UP_NEXT(next, rest', node) in
350 else res, nil_res, rest
354 let tag = Tree.tag tree node in
355 let id1 = Uid.to_int s1.StateSet.Node.id in
356 let id2 = Uid.to_int s2.StateSet.Node.id in
358 let code = Cache.Lvl3.find cache id2 id1 tag in
359 if code == L3JIT.dummy then
363 List.fold_left (fun acc' (labels, tr) ->
364 if TagSet.mem tag labels
365 then Translist.cons tr acc' else acc')
367 (Hashtbl.find auto.trans q)
372 LOG( __ "bottom-up" 3 "Transition list for %s, %a, %a is %a\n"
378 let code = L3JIT.gen_code auto trl s1 s2 in
379 Cache.Lvl3.add cache id2 id1 tag code; code
382 let res' = code empty_slot sl1 sl2 tree node in
383 move_up parent res' is_left' rest' stop
389 let res, lll = BOTTOM_UP_NEXT( (*bottom_up_next*) node, ll, Tree.nil) in
391 Logger.print err_formatter "WARNING: Leftover nodes: %i\n" (List.length lll);
394 let _, slot = loop_leaves leaves in
395 slot.(StateSet.min_elt auto.topdown_marking_states)
398 let get_trans g auto tag states =
399 StateSet.fold (fun q tr_acc ->
401 (fun ((lstates, rstates, tacc) as acc) (ts, trs) ->
402 if TagSet.mem (Tag.translate tag) ts then
403 if not (TagSet.mem Tag.attribute ts) && Grammar2.is_attribute g tag
406 let _, _, _, phi = Transition.node trs in
407 let l, r = Formula.st phi in
408 (StateSet.union l lstates,
409 StateSet.union r rstates,
410 Translist.cons trs tacc)
412 tr_acc (Hashtbl.find auto.trans q)
413 ) states (StateSet.empty, StateSet.empty, Translist.nil)
416 let dispatch_param0 conf id2 y0 y1 =
418 | Grammar2.C0 | Grammar2.C2 -> Grammar2.Node0 id2
419 | Grammar2.C1 | Grammar2.C5 -> Grammar2.Node1(id2,y0)
420 | Grammar2.C3 | Grammar2.C6 -> y0
421 | Grammar2.C4 -> Grammar2.Node2(id2, y0, y1)
423 let dispatch_param1 conf id2 y0 y1 =
426 | Grammar2.C3 -> Grammar2.Node0 id2
428 | Grammar2.C6 -> Grammar2.Node1(id2, y1)
429 | _ -> Grammar2.dummy_param
431 module K_down = struct
432 type t = Grammar2.n_symbol * StateSet.t
433 let hash (x,y) = HASHINT2(Node.to_int x, Uid.to_int y.StateSet.Node.id)
434 let equal (x1,y1) (x2,y2) = x1 == x2 && y1 == y2
438 type t = Grammar2.n_symbol * StateSet.t * StateSet.t * StateSet.t
440 HASHINT4 (Node.to_int a,
441 Uid.to_int b.StateSet.Node.id,
442 Uid.to_int c.StateSet.Node.id,
443 Uid.to_int d.StateSet.Node.id)
444 let equal (a1, b1, c1, d1) (a2, b2, c2, d2) =
445 a1 == a2 && b1 == b2 && c1 == c2 && d1 == d2
450 include Hashtbl.Make(K_down)
451 let dummy = StateSet.singleton State.dummy
452 let notfound l = l.(0) == dummy && l.(1) == dummy
458 let a = [| dummy; dummy |] in
462 module UCache = Hashtbl.Make(K_up)
466 out0 : StateSet.t * U.t;
467 out1 : StateSet.t * U.t;
468 main : StateSet.t * U.t
471 { in0 = StateSet.empty;
472 in1 = StateSet.empty;
480 out0 = StateSet.empty,v;
481 out1 = StateSet.empty,v;
484 let grammar_run auto g () =
485 let dummy_leaf = Grammar2.dummy_param in
486 let dummy_set = StateSet.singleton State.dummy in
487 let res_len = (StateSet.max_elt auto.states) + 1 in
488 let empty_slot = Array.create res_len U.NS.empty in
489 let nil_res = mk_nil auto.bottom_states empty_slot in
490 let cache3 = L3JIT.create () in
491 let dummy2 = (StateSet.empty, StateSet.empty, Translist.nil) in
492 let cache2 = Cache.Lvl2.create 512 dummy2 in
493 let rule_counter = ref 0 in
494 let preorder_counter = ref 0 in
495 let term_array = [| StateSet.empty; StateSet.empty |] in
496 let get_trans tag states =
497 let c = Cache.Lvl2.find cache2 tag (Uid.to_int states.StateSet.Node.id) in
499 let c = get_trans g auto tag states in
501 Cache.Lvl2.add cache2 tag (Uid.to_int states.StateSet.Node.id) c;
506 let lambda = ref 0 in
507 let rec start_loop idx states =
508 LOG(__ "grammar" 2 "Node %i\n%!" (Node.to_int idx));
509 if states == dummy_set then nil_res else
510 if idx < Node.null then nil_res
512 let symbol = Grammar2.start_tag g idx in
513 let fc = Grammar2.start_first_child g idx in
514 let ns = Grammar2.start_next_sibling g fc in
515 if Grammar2.is_terminal g symbol then
516 let t = Grammar2.terminal symbol in
517 terminal_loop t states (Grammar2.Leaf (~-1,0,term_array, fc)) (Grammar2.Leaf (~-1,1,term_array, ns))
519 let nt = Grammar2.non_terminal symbol in
521 let lmbd = !lambda in
522 let y0 = (Grammar2.Leaf (lmbd,0, term_array, fc))
523 and y1 = (Grammar2.Leaf (lmbd,1, term_array, ns)) in
524 rule_loop nt states y0 y1
526 and rule_loop (t : Grammar2.n_symbol) states y0 y1 =
527 if t = Node.nil || states == dummy_set then nil_res else
528 let () = incr rule_counter in
529 if !rule_counter land 65535 == 0 then begin Gc.minor() end;
530 (* let k = (t, states) in*)
531 (* let pstates = DCache.find dcache k in
532 let notfound = DCache.notfound pstates in *)
533 let rhs = Grammar2.get_rule g t in
534 let id1 = Grammar2.get_id1 rhs in
535 let id2 = Grammar2.get_id2 rhs in
536 let conf = Grammar2.get_conf rhs in
537 (* if notfound then*)
538 let ny0 = dispatch_param0 conf id2 y0 y1 in
539 let ny1 = dispatch_param1 conf id2 y0 y1 in
540 let res = dispatch_loop id1 states ny0 ny1 in
541 (* pstates.(0) <- res.in0;
542 pstates.(1) <- res.in1; *)
544 UCache.add ucache (t, states, fst res.out0, fst res.out1)
546 let h = Hashtbl.create 7 in
547 for i = 0 to res_len - 1 do
548 Hashtbl.add h (0, i) (snd res.out0).(i);
549 Hashtbl.add h (1, i) (snd res.out1).(i);
552 main = ((fst res.main), (U.close h (snd res.main)));
556 let res0 = partial_loop y0 pstates.(0) in
557 let res1 = partial_loop y1 pstates.(1) in
558 let k2 = (t, states, fst res0.main, fst res1.main) in
561 UCache.find ucache k2
564 let ores0 = { res0 with main = fst res0.main, U.var 0 (snd res0.main) }
565 and ores1 = { res1 with main = fst res1.main, U.var 1 (snd res1.main) }
567 let res = dispatch_loop id1 states (Grammar2.Cache (0,ores0)) (Grammar2.Cache (1, ores1)) in
568 UCache.add ucache k2 res.main;
571 let h = Hashtbl.create 7 in
572 for i = 0 to res_len - 1 do
573 Hashtbl.add h (0, i) (snd res0.main).(i);
574 Hashtbl.add h (1, i) (snd res1.main).(i);
580 main = s, U.close h r;
583 and dispatch_loop id1 states ny0 ny1 =
584 if Grammar2.is_non_terminal g id1 then
585 rule_loop (Grammar2.non_terminal id1) states ny0 ny1
587 terminal_loop (Grammar2.terminal id1) states ny0 ny1
589 and terminal_loop (symbol : Grammar2.t_symbol) states y0 y1 =
591 if symbol == Grammar2.nil_symbol || symbol = Node.nil || states == dummy_set then nil_res else begin
592 let tag = Grammar2.tag symbol in
593 let lst, rst, trans = get_trans tag states in
594 let res0 = partial_loop y0 lst in
595 let res1 = partial_loop y1 rst in
596 let s1, slot1 = res0.main
597 and s2, slot2 = res1.main in
598 let opcode = L3JIT.find cache3 trans s1 s2 in
599 let node = Node.of_int !preorder_counter in
600 incr preorder_counter;
602 if opcode == L3JIT.dummy then
603 (L3JIT.cache_apply cache3 auto trans s1 s2) empty_slot slot1 slot2 (Obj.magic ()) node
605 opcode empty_slot slot1 slot2 (Obj.magic()) (node)
614 and partial_loop l states =
615 if l == dummy_leaf then nil_res else
617 | Grammar2.Cache (_, r) -> r
618 | Grammar2.Leaf (_,_, _, id) -> start_loop id states
619 | Grammar2.Node0 id ->
620 if (Grammar2.terminal id) == Grammar2.nil_symbol then nil_res
622 rule_loop (Grammar2.non_terminal id) states dummy_leaf dummy_leaf
624 | Grammar2.Node1 (id, y0) ->
625 rule_loop (Grammar2.non_terminal id) states y0 dummy_leaf
626 | Grammar2.Node2 (id, y0, y1) ->
627 if Grammar2.is_terminal g id then
628 terminal_loop (Grammar2.terminal id) states y0 y1
630 rule_loop (Grammar2.non_terminal id) states y0 y1
633 let (_, slot) = (start_loop (Node.null) auto.init).main in
634 slot.(StateSet.min_elt auto.topdown_marking_states)
638 (* Slow reference top-down implementation *)
639 let naive_top_down auto tree root states ctx =
640 let res_len = StateSet.max_elt auto.states + 1 in
641 let empty_slot = Array.create res_len U.NS.empty in
642 let nil_res = auto.bottom_states, empty_slot in
643 let cache3 = L3JIT.create () in
644 let l3jit_dispatch trl s1 s2 t sl1 sl2 =
645 let f = L3JIT.find cache3 trl s1 s2 in
646 if f == L3JIT.dummy then (L3JIT.cache_apply cache3 auto trl s1 s2) empty_slot sl1 sl2 tree t
647 else f empty_slot sl1 sl2 tree t
649 let dummy = Translist.nil, StateSet.singleton State.dummy, StateSet.singleton State.dummy in
650 let cache2 = Cache.Lvl2.create 512 dummy in
651 let rec loop t states ctx =
652 if states == StateSet.empty then nil_res
653 else if t == Tree.nil then (*StateSet.inter states auto.bottom_states, empty_slot *) nil_res
655 let tag = Tree.tag tree t in
657 let trans, lstates, rstates =
658 let c = Cache.Lvl2.find cache2 (Uid.to_int states.StateSet.Node.id) tag in
660 let c = Ata.get_trans auto states tag in
661 Cache.Lvl2.add cache2 (Uid.to_int states.StateSet.Node.id) tag c;
665 let s1, res1 = loop (Tree.first_child tree t) lstates ctx
666 and s2, res2 = loop (Tree.next_sibling tree t) rstates ctx in
667 l3jit_dispatch trans s1 s2 t res1 res2
674 let naive_top_down_run auto tree root =
675 let res, slot = naive_top_down auto tree root auto.init (Tree.closing tree root) in
676 slot.(StateSet.min_elt auto.topdown_marking_states)
680 let eval_form auto s1 s2 f =
682 match Formula.expr f with
683 | Formula.False | Formula.True | Formula.Pred _ -> f
684 | Formula.Atom(`Left, b, q) ->
685 Formula.of_bool (b == (StateSet.mem q s1))
686 | Formula.Atom (`Right, b, q) ->
687 Formula.of_bool(b == (StateSet.mem q s2))
688 | Formula.Atom (`Epsilon, _, _) -> assert false
690 | Formula.Or(f1, f2) ->
693 Formula.or_pred b1 b2
694 | Formula.And(f1, f2) ->
697 Formula.and_pred b1 b2
701 let eval_trans auto s1 s2 trans =
703 (fun t ((a_st, mark) as acc)->
704 let q, _, m, f = Transition.node t in
705 let form = eval_form auto s1 s2 f in
706 match Formula.expr form with
707 | Formula.True -> StateSet.add q a_st, mark || m
708 | Formula.False -> acc
710 ) trans (StateSet.empty, false)
714 LOG(__ "twopass" 2 "Setting node %i to state %a\n%!"
718 let twopass_top_down states_array auto tree root states ctx =
719 let dummy3 = StateSet.singleton State.dummy in
720 let cache3 = Cache.Lvl3.create 512 dummy3 in
721 let dummy2 = Translist.nil, StateSet.singleton State.dummy, StateSet.singleton State.dummy in
722 let cache2 = Cache.Lvl2.create 512 dummy2 in
723 let attributes = TagSet.inj_positive (Tree.attribute_tags tree) in
724 let rec loop t states ctx =
725 if t == Tree.nil then auto.bottom_states
726 else if states == StateSet.empty then
727 let () = set states_array (Node.to_int t) auto.bottom_states in
730 let tag = Tree.tag tree t in
731 LOG(__ "twopass" 2 "Traversing node %i (tag %s) in states %a\n%!" (Node.to_int t) (Tag.to_string tag)
732 StateSet.print states
734 let trans, lstates, rstates =
735 let c = Cache.Lvl2.find cache2 (Uid.to_int states.StateSet.Node.id) tag in
737 let c = Ata.get_trans ~attributes:attributes auto states tag in
738 Cache.Lvl2.add cache2 (Uid.to_int states.StateSet.Node.id) tag c;
742 LOG(__ "twopass" 2 "\nTransitions are:\n%!");
743 LOG(__ "twopass" 2"\nTransitions are:\n%a\n%!"
744 Translist.print trans
746 let s1 = loop (Tree.first_child tree t) lstates ctx
747 and s2 = loop (Tree.next_sibling tree t) rstates ctx in
749 let c = Cache.Lvl3.find cache3
750 (Uid.to_int s1.StateSet.Node.id)
751 (Uid.to_int s2.StateSet.Node.id)
752 (Uid.to_int trans.Translist.Node.id)
755 let c, _ = eval_trans auto s1 s2 trans in
756 Cache.Lvl3.add cache3
757 (Uid.to_int s1.StateSet.Node.id)
758 (Uid.to_int s2.StateSet.Node.id)
759 (Uid.to_int trans.Translist.Node.id) c;c
762 set states_array (Node.to_int t) st;
765 loop root states ctx, (dummy2, cache2)
768 type action = Nop | Mark | Dummy
770 let twopass_top_down_scan states_array (dummy2, cache2) auto tree root states ctx =
771 let attributes = TagSet.inj_positive (Tree.attribute_tags tree) in
772 let cache3 = Cache.Lvl3.create 512 Dummy in
773 let rec loop t states acc =
774 if states == StateSet.empty || t = Tree.nil then acc
776 let tag = Tree.tag tree t in
778 let c = Cache.Lvl2.find cache2 (Uid.to_int states.StateSet.Node.id) tag in
780 let c = Ata.get_trans ~attributes:attributes auto states tag in
781 Cache.Lvl2.add cache2 (Uid.to_int states.StateSet.Node.id) tag c;
785 let fs = Tree.first_child tree t in
786 let ns = Tree.next_sibling tree t in
787 let s1 = if fs != Tree.nil then states_array.(Node.to_int fs) else auto.bottom_states
788 and s2 = if ns != Tree.nil then states_array.(Node.to_int ns) else auto.bottom_states
791 let c = Cache.Lvl3.find cache3
792 (Uid.to_int s1.StateSet.Node.id)
793 (Uid.to_int s2.StateSet.Node.id)
794 (Uid.to_int trans.Translist.Node.id)
797 let _, c = eval_trans auto s1 s2 trans in
798 let c = if c then Mark else Nop in
799 Cache.Lvl3.add cache3
800 (Uid.to_int s1.StateSet.Node.id)
801 (Uid.to_int s2.StateSet.Node.id)
802 (Uid.to_int trans.Translist.Node.id) c;c
805 LOG(__ "twopass" 2 "Evaluating node %i (tag %s).\n%!States=%a\n%!"
808 StateSet.print states
810 LOG(__ "twopass" 2 "Translist=%a\nLeft=%a\nRight=%a\nMark=%s\n\n%!"
811 Translist.print trans
819 loop ns s2 (loop fs s1 (U.NS.snoc acc t))
821 loop ns s2 (loop fs s1 acc)
823 loop root states U.NS.empty
825 let twopass_top_down_run auto tree root =
826 let len = Node.to_int (Tree.closing tree root) + 1 in
827 LOG(__ "twopass" 2 "Creating array of size: %i\n%!" len);
828 let states_array = Array.make len StateSet.empty in
830 twopass_top_down states_array auto tree root auto.init Tree.nil
832 twopass_top_down_scan states_array cache auto tree root auto.init Tree.nil