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 eprintf "%!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 orig_s1 orig_s2 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 gen_code auto tlist s1 s2 =
117 let res, code, not_marking, todo_code = compile auto tlist s1 s2 in
119 if todo_code == [] then
120 if not_marking then begin fun empty_slot sl1 sl2 _ node ->
121 let slot1_empty = sl1 == empty_slot
122 and slot2_empty = sl2 == empty_slot in
123 if slot1_empty && slot2_empty then res,sl2
128 Array.copy empty_slot
132 U.exec sl sl1 sl2 node code;
135 else (* marking *) begin fun empty_slot sl1 sl2 _ node ->
137 if sl2 == empty_slot then
138 if sl1 == empty_slot then
139 Array.copy empty_slot
143 U.exec sl sl1 sl2 node code;
146 else (* todo != [] *)
147 begin fun empty_slot sl1 sl2 tree node ->
149 if sl2 == empty_slot then
150 if sl1 == empty_slot then
151 Array.copy empty_slot
155 U.exec sl sl1 sl2 node code;
157 (fun ares (p, q, code) ->
158 if !p tree node then begin
159 if code != ResJIT.Nil then U.exec sl sl1 sl2 node code;
162 else ares) res todo_code, sl
168 let cache_apply cache auto tlist s1 s2 =
169 let f = gen_code auto tlist s1 s2 in
170 LOG(__ "grammar" 2 "Inserting: %i, %a, %a\n%!"
171 (Uid.to_int tlist.Translist.Node.id) StateSet.print s1 StateSet.print s2);
172 add cache tlist s1 s2 f; f
175 DEFINE LOOP (t, states, ctx) = (
177 LOG(__ "top-down-run" 3
178 "Entering node %i with loop (tag %s, context %i) with states %a"
180 (Tag.to_string (Tree.tag tree _t))
182 (StateSet.print) (states));
183 if _t == Tree.nil then nil_res
185 let tag = Tree.tag tree _t in
187 _t tag (states) (ctx) (L2JIT.find cache2 tag (states))
190 DEFINE LOOP_TAG (t, states, tag, ctx) = (
191 let _t = (t) in (* to avoid duplicating expression t *)
192 LOG(__ "top-down-run" 3
193 "Entering node %i with loop_tag (tag %s, context %i) with states %a"
195 (Tag.to_string (tag))
197 (StateSet.print) (states));
198 if _t == Tree.nil then nil_res
201 _t (tag) (states) (ctx) (L2JIT.find cache2 (tag) (states)))
203 let top_down_run auto tree root states ctx =
204 let res_len = StateSet.max_elt auto.states + 1 in
205 let empty_slot = Array.create res_len U.NS.empty in
206 let nil_res = auto.bottom_states, empty_slot in
207 let cache3 = L3JIT.create () in
209 fun s subtree -> if subtree != U.NS.empty then
210 let r = Array.copy empty_slot in
211 r.(auto.last) <- subtree;
216 let l3jit_dispatch trl s1 s2 t sl1 sl2 =
217 let f = L3JIT.find cache3 trl s1 s2 in
218 if f == L3JIT.dummy then (L3JIT.cache_apply cache3 auto trl s1 s2) empty_slot sl1 sl2 tree t
219 else f empty_slot sl1 sl2 tree t
222 let cache2 = L2JIT.create () in
224 let rec l2jit_dispatch t tag states ctx opcode =
226 | L2JIT.RETURN -> nil_res
228 LOG(__ "top-down-run" 3
229 "Top-down cache miss for configuration %s %a"
230 (Tag.to_string tag) StateSet.print states);
231 let opcode = L2JIT.compile cache2 auto tree tag states in
232 l2jit_dispatch t tag states ctx opcode
234 | L2JIT.LEFT (tr_list, instr) ->
236 l2jit_dispatch_instr t (Tree.closing tree t) instr
238 l3jit_dispatch tr_list res1 auto.bottom_states t slot1 empty_slot
240 | L2JIT.RIGHT (tr_list, instr) ->
242 l2jit_dispatch_instr t ctx instr
244 l3jit_dispatch tr_list auto.bottom_states res2 t empty_slot slot2
246 | L2JIT.BOTH (tr_list, instr1, instr2) ->
248 l2jit_dispatch_instr t (Tree.closing tree t) instr1
251 l2jit_dispatch_instr t ctx instr2
253 l3jit_dispatch tr_list res1 res2 t slot1 slot2
255 and l2jit_dispatch_instr t ctx instr =
257 | L2JIT.NOP () -> nil_res
258 | L2JIT.FIRST_CHILD s -> LOOP ((Tree.first_child tree t), s, ctx)
259 | L2JIT.NEXT_SIBLING s -> LOOP ((Tree.next_sibling tree t), s, ctx)
261 | L2JIT.FIRST_ELEMENT s -> LOOP ((Tree.first_element tree t), s, ctx)
262 | L2JIT.NEXT_ELEMENT s -> LOOP ((Tree.next_element tree t), s, ctx)
264 | L2JIT.TAGGED_DESCENDANT (s, tag) ->
265 LOOP_TAG ((Tree.tagged_descendant tree t tag), s, tag, ctx)
267 | L2JIT.TAGGED_FOLLOWING (s, tag) ->
268 LOOP_TAG((Tree.tagged_following_before tree t tag ctx), s, tag, ctx)
270 | L2JIT.SELECT_DESCENDANT (s, _, us) ->
271 LOOP((Tree.select_descendant tree t us), s, ctx)
273 | L2JIT.SELECT_FOLLOWING (s, pt, us) ->
274 LOOP ((Tree.select_following_before tree t us ctx), s, ctx)
276 | L2JIT.TAGGED_CHILD (s, tag) ->
277 LOOP_TAG((Tree.tagged_child tree t tag), s, tag, ctx)
279 | L2JIT.TAGGED_FOLLOWING_SIBLING (s, tag) ->
280 LOOP_TAG((Tree.tagged_following_sibling tree t tag), s, tag, ctx)
282 | L2JIT.SELECT_CHILD (s, _, us) ->
283 LOOP ((Tree.select_child tree t us), s, ctx)
285 | L2JIT.SELECT_FOLLOWING_SIBLING (s, _, us) ->
286 LOOP ((Tree.select_following_sibling tree t us), s, ctx)
288 | L2JIT.TAGGED_SUBTREE(s, tag) ->
289 mark_subtree s (U.NS.subtree_tags tree t tag)
291 | L2JIT.ELEMENT_SUBTREE(s) ->
292 mark_subtree s (U.NS.subtree_elements tree t)
294 let r = LOOP (root, states, ctx) in
295 (*L3JIT.stats err_formatter cache3; *)
298 let full_top_down_run auto states tree root =
300 top_down_run auto tree root states (Tree.closing tree root)
302 let top_down_run auto tree root =
304 let res, slot = full_top_down_run auto auto.init tree root in
306 slot.(StateSet.min_elt auto.topdown_marking_states)
309 (*** Bottom-up evaluation function **)
312 Format.fprintf fmt "{ ";
313 U.NS.iter begin fun node ->
314 Format.fprintf fmt "%a " Node.print node;
316 Format.fprintf fmt "}"
318 let slot_print fmt t =
319 Array.iteri begin fun state ns ->
320 Format.eprintf "%a -> %a\n" State.print state ns_print ns;
324 let eval_trans auto tree parent res1 res2 = assert false
326 let rec uniq = function
327 | ([] | [ _ ]) as l -> l
328 | e1 :: ((e2 :: ll) as l) -> if e1 == e2 then uniq l
329 else e1 :: e2 :: (uniq ll);;
331 let bottom_up_run auto tree (query, pat) =
332 let array = time ~msg:"Timing text query" (Tree.full_text_query query tree) pat in
333 let leaves = Array.to_list array in
334 let states = auto.states in
335 let res_len = (StateSet.max_elt states) + 1 in
336 let empty_slot = Array.create res_len U.NS.empty in
337 let nil_res = auto.bottom_states, empty_slot in
338 let cache = Cache.Lvl3.create 1024 L3JIT.dummy in
339 let rec loop_leaves l acc =
343 let res, lll = bottom_up_next node ll Tree.nil in
346 eprintf "Leftover nodes: %i\n" (List.length lll);
350 and bottom_up_next node rest stop =
351 let fs = Tree.first_child tree node in
353 if fs == Tree.nil then nil_res
354 else full_top_down_run auto states tree fs
356 move_up node res1 true rest stop
358 and move_up node res is_left rest stop =
359 if node == stop then res, rest
361 let prev_sibling = Tree.prev_sibling tree node in
362 let is_left' = prev_sibling == Tree.nil in
363 let real_parent = Tree.parent tree node in
365 if is_left' then real_parent else max (Tree.first_child tree real_parent) stop
367 (* let parent = if is_left' then Tree.parent tree node else prev_sibling in *)
368 let (s1, sl1), (s2, sl2), rest' =
369 if is_left then match rest with
370 [] -> res, nil_res, rest
372 if Tree.is_right_descendant tree node next
374 let res2, rest' = bottom_up_next next rest' node in
376 else res, nil_res, rest
380 let tag = Tree.tag tree node in
381 let id1 = Uid.to_int s1.StateSet.Node.id in
382 let id2 = Uid.to_int s2.StateSet.Node.id in
384 let code = Cache.Lvl3.find cache tag id1 id2 in
385 if code == L3JIT.dummy then
389 List.fold_left (fun acc' (labels, tr) ->
390 if labels == TagSet.any || TagSet.mem tag labels
391 then Translist.cons tr acc' else acc')
393 (Hashtbl.find auto.trans q)
398 let code = L3JIT.gen_code auto trl s1 s2 in
399 Cache.Lvl3.add cache tag id1 id2 code; code
402 let res' = code empty_slot sl1 sl2 tree node in
403 move_up parent res' is_left' rest' stop
405 let _, slot = loop_leaves leaves (nil_res) in
406 slot.(StateSet.min_elt auto.topdown_marking_states)
408 let get_trans g auto tag states =
409 StateSet.fold (fun q tr_acc ->
411 (fun ((lstates, rstates, tacc) as acc) (ts, trs) ->
412 if TagSet.mem (Tag.translate tag) ts then
413 if not (TagSet.mem Tag.attribute ts) && Grammar2.is_attribute g tag
416 let _, _, _, phi = Transition.node trs in
417 let l, r = Formula.st phi in
418 (StateSet.union l lstates,
419 StateSet.union r rstates,
420 Translist.cons trs tacc)
422 tr_acc (Hashtbl.find auto.trans q)
423 ) states (StateSet.empty, StateSet.empty, Translist.nil)
426 let dispatch_param0 conf id2 y0 y1 =
428 | Grammar2.C0 | Grammar2.C2 -> Grammar2.Node0 id2
429 | Grammar2.C1 | Grammar2.C5 -> Grammar2.Node1(id2,y0)
430 | Grammar2.C3 | Grammar2.C6 -> y0
431 | Grammar2.C4 -> Grammar2.Node2(id2, y0, y1)
433 let dispatch_param1 conf id2 y0 y1 =
436 | Grammar2.C3 -> Grammar2.Node0 id2
438 | Grammar2.C6 -> Grammar2.Node1(id2, y1)
439 | _ -> Grammar2.dummy_param
441 module K_down = struct
442 type t = Grammar2.n_symbol * StateSet.t
443 let hash (x,y) = HASHINT2(Node.to_int x, Uid.to_int y.StateSet.Node.id)
444 let equal (x1,y1) (x2,y2) = x1 == x2 && y1 == y2
448 type t = Grammar2.n_symbol * StateSet.t * StateSet.t * StateSet.t
450 HASHINT4 (Node.to_int a,
451 Uid.to_int b.StateSet.Node.id,
452 Uid.to_int c.StateSet.Node.id,
453 Uid.to_int d.StateSet.Node.id)
454 let equal (a1, b1, c1, d1) (a2, b2, c2, d2) =
455 a1 == a2 && b1 == b2 && c1 == c2 && d1 == d2
460 include Hashtbl.Make(K_down)
461 let dummy = StateSet.singleton State.dummy
462 let notfound l = l.(0) == dummy && l.(1) == dummy
468 let a = [| dummy; dummy |] in
472 module UCache = Hashtbl.Make(K_up)
476 out0 : StateSet.t * U.t;
477 out1 : StateSet.t * U.t;
478 main : StateSet.t * U.t
481 { in0 = StateSet.empty;
482 in1 = StateSet.empty;
490 out0 = StateSet.empty,v;
491 out1 = StateSet.empty,v;
494 let grammar_run auto g () =
495 let dummy_leaf = Grammar2.dummy_param in
496 let dummy_set = StateSet.singleton State.dummy in
497 let res_len = (StateSet.max_elt auto.states) + 1 in
498 let empty_slot = Array.create res_len U.NS.empty in
499 let nil_res = mk_nil auto.bottom_states empty_slot in
500 let empty_res = mk_empty (StateSet.empty, empty_slot) in
501 let cache3 = L3JIT.create () in
502 let dummy2 = (StateSet.empty, StateSet.empty, Translist.nil) in
503 let cache2 = Cache.Lvl2.create 512 dummy2 in
504 let rule_counter = ref 0 in
505 let preorder_counter = ref 0 in
506 let dcache = DCache.create 1023 in
507 let ucache = UCache.create 1023 in
508 let term_array = [| StateSet.empty; StateSet.empty |] in
509 let get_trans tag states =
510 let c = Cache.Lvl2.find cache2 tag (Uid.to_int states.StateSet.Node.id) in
512 let c = get_trans g auto tag states in
514 Cache.Lvl2.add cache2 tag (Uid.to_int states.StateSet.Node.id) c;
519 let lambda = ref 0 in
520 let rec start_loop idx states =
521 LOG(__ "grammar" 2 "Node %i\n%!" (Node.to_int idx));
522 if states == dummy_set then nil_res else
523 if idx < Node.null then nil_res
525 let symbol = Grammar2.start_tag g idx in
526 let fc = Grammar2.start_first_child g idx in
527 let ns = Grammar2.start_next_sibling g fc in
528 if Grammar2.is_terminal g symbol then
529 let t = Grammar2.terminal symbol in
530 terminal_loop t states (Grammar2.Leaf (~-1,0,term_array, fc)) (Grammar2.Leaf (~-1,1,term_array, ns))
532 let nt = Grammar2.non_terminal symbol in
534 let lmbd = !lambda in
535 let y0 = (Grammar2.Leaf (lmbd,0, term_array, fc))
536 and y1 = (Grammar2.Leaf (lmbd,1, term_array, ns)) in
537 rule_loop nt states y0 y1
539 and rule_loop (t : Grammar2.n_symbol) states y0 y1 =
540 if t = Node.nil || states == dummy_set then nil_res else
541 let () = incr rule_counter in
542 if !rule_counter land 65535 == 0 then begin Gc.minor() end;
543 (* let k = (t, states) in*)
544 (* let pstates = DCache.find dcache k in
545 let notfound = DCache.notfound pstates in *)
546 let rhs = Grammar2.get_rule g t in
547 let id1 = Grammar2.get_id1 rhs in
548 let id2 = Grammar2.get_id2 rhs in
549 let conf = Grammar2.get_conf rhs in
550 (* if notfound then*)
551 let ny0 = dispatch_param0 conf id2 y0 y1 in
552 let ny1 = dispatch_param1 conf id2 y0 y1 in
553 let res = dispatch_loop id1 states ny0 ny1 in
554 (* pstates.(0) <- res.in0;
555 pstates.(1) <- res.in1; *)
557 UCache.add ucache (t, states, fst res.out0, fst res.out1)
559 let h = Hashtbl.create 7 in
560 for i = 0 to res_len - 1 do
561 Hashtbl.add h (0, i) (snd res.out0).(i);
562 Hashtbl.add h (1, i) (snd res.out1).(i);
565 main = ((fst res.main), (U.close h (snd res.main)));
569 let res0 = partial_loop y0 pstates.(0) in
570 let res1 = partial_loop y1 pstates.(1) in
571 let k2 = (t, states, fst res0.main, fst res1.main) in
574 UCache.find ucache k2
577 let ores0 = { res0 with main = fst res0.main, U.var 0 (snd res0.main) }
578 and ores1 = { res1 with main = fst res1.main, U.var 1 (snd res1.main) }
580 let res = dispatch_loop id1 states (Grammar2.Cache (0,ores0)) (Grammar2.Cache (1, ores1)) in
581 UCache.add ucache k2 res.main;
584 let h = Hashtbl.create 7 in
585 for i = 0 to res_len - 1 do
586 Hashtbl.add h (0, i) (snd res0.main).(i);
587 Hashtbl.add h (1, i) (snd res1.main).(i);
593 main = s, U.close h r;
596 and dispatch_loop id1 states ny0 ny1 =
597 if Grammar2.is_non_terminal g id1 then
598 rule_loop (Grammar2.non_terminal id1) states ny0 ny1
600 terminal_loop (Grammar2.terminal id1) states ny0 ny1
602 and terminal_loop (symbol : Grammar2.t_symbol) states y0 y1 =
604 if symbol == Grammar2.nil_symbol || symbol = Node.nil || states == dummy_set then nil_res else begin
605 let tag = Grammar2.tag symbol in
606 let lst, rst, trans = get_trans tag states in
607 let res0 = partial_loop y0 lst in
608 let res1 = partial_loop y1 rst in
609 let s1, slot1 = res0.main
610 and s2, slot2 = res1.main in
611 let opcode = L3JIT.find cache3 trans s1 s2 in
612 let node = Node.of_int !preorder_counter in
613 incr preorder_counter;
615 if opcode == L3JIT.dummy then
616 (L3JIT.cache_apply cache3 auto trans s1 s2) empty_slot slot1 slot2 (Obj.magic ()) node
618 opcode empty_slot slot1 slot2 (Obj.magic()) (node)
627 and partial_loop l states =
628 if l == dummy_leaf then nil_res else
630 | Grammar2.Cache (_, r) -> r
631 | Grammar2.Leaf (_,_, _, id) -> start_loop id states
632 | Grammar2.Node0 id ->
633 if (Grammar2.terminal id) == Grammar2.nil_symbol then nil_res
635 rule_loop (Grammar2.non_terminal id) states dummy_leaf dummy_leaf
637 | Grammar2.Node1 (id, y0) ->
638 rule_loop (Grammar2.non_terminal id) states y0 dummy_leaf
639 | Grammar2.Node2 (id, y0, y1) ->
640 if Grammar2.is_terminal g id then
641 terminal_loop (Grammar2.terminal id) states y0 y1
643 rule_loop (Grammar2.non_terminal id) states y0 y1
646 let (_, slot) = (start_loop (Node.null) auto.init).main in
647 slot.(StateSet.min_elt auto.topdown_marking_states)
651 (* Slow reference top-down implementation *)
652 let naive_top_down auto tree root states ctx =
653 let res_len = StateSet.max_elt auto.states + 1 in
654 let empty_slot = Array.create res_len U.NS.empty in
655 let nil_res = auto.bottom_states, empty_slot in
656 let cache3 = L3JIT.create () in
657 let l3jit_dispatch trl s1 s2 t sl1 sl2 =
658 let f = L3JIT.find cache3 trl s1 s2 in
659 if f == L3JIT.dummy then (L3JIT.cache_apply cache3 auto trl s1 s2) empty_slot sl1 sl2 tree t
660 else f empty_slot sl1 sl2 tree t
662 let dummy = Translist.nil, StateSet.singleton State.dummy, StateSet.singleton State.dummy in
663 let cache2 = Cache.Lvl2.create 512 dummy in
664 let rec loop t states ctx =
665 if states == StateSet.empty then nil_res
666 else if t == Tree.nil then (*StateSet.inter states auto.bottom_states, empty_slot *) nil_res
668 let tag = Tree.tag tree t in
670 let trans, lstates, rstates =
671 let c = Cache.Lvl2.find cache2 (Uid.to_int states.StateSet.Node.id) tag in
673 let c = Ata.get_trans auto states tag in
674 Cache.Lvl2.add cache2 (Uid.to_int states.StateSet.Node.id) tag c;
678 let s1, res1 = loop (Tree.first_child tree t) lstates ctx
679 and s2, res2 = loop (Tree.next_sibling tree t) rstates ctx in
680 l3jit_dispatch trans s1 s2 t res1 res2
687 let naive_top_down_run auto tree root =
688 let res, slot = naive_top_down auto tree root auto.init (Tree.closing tree root) in
689 slot.(StateSet.min_elt auto.topdown_marking_states)
693 let eval_form auto s1 s2 f =
695 match Formula.expr f with
696 | Formula.False | Formula.True | Formula.Pred _ -> f
697 | Formula.Atom(`Left, b, q) ->
698 Formula.of_bool (b == (StateSet.mem q s1))
699 | Formula.Atom (`Right, b, q) ->
700 Formula.of_bool(b == (StateSet.mem q s2))
701 | Formula.Atom (`Epsilon, _, _) -> assert false
703 | Formula.Or(f1, f2) ->
706 Formula.or_pred b1 b2
707 | Formula.And(f1, f2) ->
710 Formula.and_pred b1 b2
714 let eval_trans auto s1 s2 trans =
716 (fun t ((a_st, mark) as acc)->
717 let q, _, m, f = Transition.node t in
718 let form = eval_form auto s1 s2 f in
719 match Formula.expr form with
720 | Formula.True -> StateSet.add q a_st, mark || m
721 | Formula.False -> acc
723 ) trans (StateSet.empty, false)
727 LOG(__ "twopass" 2 "Setting node %i to state %a\n%!"
731 let twopass_top_down states_array auto tree root states ctx =
732 let dummy3 = StateSet.singleton State.dummy in
733 let cache3 = Cache.Lvl3.create 512 dummy3 in
734 let dummy2 = Translist.nil, StateSet.singleton State.dummy, StateSet.singleton State.dummy in
735 let cache2 = Cache.Lvl2.create 512 dummy2 in
736 let attributes = TagSet.inj_positive (Tree.attribute_tags tree) in
737 let rec loop t states ctx =
738 if t == Tree.nil then auto.bottom_states
739 else if states == StateSet.empty then
740 let () = set states_array (Node.to_int t) auto.bottom_states in
743 let tag = Tree.tag tree t in
744 LOG(__ "twopass" 2 "Traversing node %i (tag %s) in states %a\n%!" (Node.to_int t) (Tag.to_string tag)
745 StateSet.print states
747 let trans, lstates, rstates =
748 let c = Cache.Lvl2.find cache2 (Uid.to_int states.StateSet.Node.id) tag in
750 let c = Ata.get_trans ~attributes:attributes auto states tag in
751 Cache.Lvl2.add cache2 (Uid.to_int states.StateSet.Node.id) tag c;
755 LOG(__ "twopass" 2 "\nTransitions are:\n%!");
756 LOG(__ "twopass" 2"\nTransitions are:\n%a\n%!"
757 Translist.print trans
759 let s1 = loop (Tree.first_child tree t) lstates ctx
760 and s2 = loop (Tree.next_sibling tree t) rstates ctx in
762 let c = Cache.Lvl3.find cache3
763 (Uid.to_int s1.StateSet.Node.id)
764 (Uid.to_int s2.StateSet.Node.id)
765 (Uid.to_int trans.Translist.Node.id)
768 let c, _ = eval_trans auto s1 s2 trans in
769 Cache.Lvl3.add cache3
770 (Uid.to_int s1.StateSet.Node.id)
771 (Uid.to_int s2.StateSet.Node.id)
772 (Uid.to_int trans.Translist.Node.id) c;c
775 set states_array (Node.to_int t) st;
778 loop root states ctx, (dummy2, cache2)
781 type action = Nop | Mark | Dummy
783 let twopass_top_down_scan states_array (dummy2, cache2) auto tree root states ctx =
784 let attributes = TagSet.inj_positive (Tree.attribute_tags tree) in
785 let cache3 = Cache.Lvl3.create 512 Dummy in
786 let rec loop t states acc =
787 if states == StateSet.empty || t = Tree.nil then acc
789 let tag = Tree.tag tree t in
791 let c = Cache.Lvl2.find cache2 (Uid.to_int states.StateSet.Node.id) tag in
793 let c = Ata.get_trans ~attributes:attributes auto states tag in
794 Cache.Lvl2.add cache2 (Uid.to_int states.StateSet.Node.id) tag c;
798 let fs = Tree.first_child tree t in
799 let ns = Tree.next_sibling tree t in
800 let s1 = if fs != Tree.nil then states_array.(Node.to_int fs) else auto.bottom_states
801 and s2 = if ns != Tree.nil then states_array.(Node.to_int ns) else auto.bottom_states
804 let c = Cache.Lvl3.find cache3
805 (Uid.to_int s1.StateSet.Node.id)
806 (Uid.to_int s2.StateSet.Node.id)
807 (Uid.to_int trans.Translist.Node.id)
810 let _, c = eval_trans auto s1 s2 trans in
811 let c = if c then Mark else Nop in
812 Cache.Lvl3.add cache3
813 (Uid.to_int s1.StateSet.Node.id)
814 (Uid.to_int s2.StateSet.Node.id)
815 (Uid.to_int trans.Translist.Node.id) c;c
818 LOG(__ "twopass" 2 "Evaluating node %i (tag %s).\n%!States=%a\n%!"
821 StateSet.print states
823 LOG(__ "twopass" 2 "Translist=%a\nLeft=%a\nRight=%a\nMark=%s\n\n%!"
824 Translist.print trans
832 loop ns s2 (loop fs s1 (U.NS.snoc acc t))
834 loop ns s2 (loop fs s1 acc)
836 loop root states U.NS.empty
838 let twopass_top_down_run auto tree root =
839 let len = Node.to_int (Tree.closing tree root) + 1 in
840 LOG(__ "twopass" 2 "Creating array of size: %i\n%!" len);
841 let states_array = Array.make len StateSet.empty in
843 twopass_top_down states_array auto tree root auto.init Tree.nil
845 twopass_top_down_scan states_array cache auto tree root auto.init Tree.nil