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
13 module Make (U : ResJIT.S) : S with type result_set = U.NS.t =
16 type result_set = U.NS.t;;
18 let eval_form auto s1 s2 f =
20 match Formula.expr f with
21 | Formula.False | Formula.True | Formula.Pred _ -> f, []
22 | Formula.Atom(`Left, b, q) ->
23 Formula.of_bool (b == (StateSet.mem q s1)),
24 if b && StateSet.mem q auto.topdown_marking_states then [ResJIT.LEFT q] else []
25 | Formula.Atom (`Right, b, q) ->
26 Formula.of_bool(b == (StateSet.mem q s2)),
27 if b && StateSet.mem q auto.topdown_marking_states then [ResJIT.RIGHT q] else []
28 | Formula.Atom (`Epsilon, _, _) -> assert false
30 | Formula.Or(f1, f2) ->
31 let b1, i1 = loop f1 in
32 let b2, i2 = loop f2 in
33 Formula.or_pred b1 b2, i1 @ i2
34 | Formula.And(f1, f2) ->
35 let b1, i1 = loop f1 in
36 let b2, i2 = loop f2 in
37 Formula.and_pred b1 b2, i1 @ i2
42 let eval_trans auto s1 s2 trans =
44 (fun t ((a_st, a_op, a_todo) as acc)->
45 let q, _, m, f = Transition.node t in
46 let form, ops = eval_form auto s1 s2 f in
47 match Formula.expr form with
50 (q, (if m then (ResJIT.SELF() :: ops) else ops)):: a_op,
52 | Formula.False -> acc
53 | Formula.Pred p -> a_st, a_op,
54 (p.Tree.Predicate.node, q, [(q,(if m then (ResJIT.SELF() :: ops) else ops))]) :: a_todo
56 ) trans (StateSet.empty, [], [])
63 type opcode = (t -> t -> t -> Tree.t -> Tree.node -> StateSet.t * t)
65 type t = opcode Cache.t Cache.t Cache.t
67 let dummy _ _ _ _ _ = failwith "Uninitialized L3JIT"
69 let create () = Cache.Lvl3.create 1024 dummy
72 let d = Cache.Lvl3.to_array d in
73 let len = Array.fold_left
75 Array.fold_left (fun acc2 a2 -> Array.length a2 + acc2) acc a) 0 d
80 (fun acc a -> if Array.length a == 0 then acc else acc+1) 0 d in
81 let lvl2 = Array.fold_left
83 Array.fold_left (fun acc2 a2 -> if Array.length a2 == 0 then acc2 else acc2+1)
86 let lvl3 = Array.fold_left
88 Array.fold_left (fun acc2 a2 ->
90 (fun acc3 a3 -> if a3 == dummy then acc3 else acc3+1) acc2 a2)
93 fprintf fmt "L3JIT Statistics:
99 len lvl1 lvl2 lvl3 (Ocaml.size_kb d)
101 let find t tlist s1 s2 =
103 (Uid.to_int tlist.Translist.Node.id)
104 (Uid.to_int s1.StateSet.Node.id)
105 (Uid.to_int s2.StateSet.Node.id)
107 let add t tlist s1 s2 v =
109 (Uid.to_int tlist.Translist.Node.id)
110 (Uid.to_int s1.StateSet.Node.id)
111 (Uid.to_int s2.StateSet.Node.id)
114 let compile auto trl s1 s2 =
115 let orig_s1, orig_s2 =
116 Translist.fold (fun t (a1, a2) ->
117 let _, _, _, f = Transition.node t in
118 let (_, _, fs1), (_, _, fs2) = Formula.st f in
119 (StateSet.union s1 fs1, StateSet.union s2 fs2)
120 ) trl (StateSet.empty, StateSet.empty)
122 let ns1 = StateSet.inter s1 orig_s1
123 and ns2 = StateSet.inter s2 orig_s2 in
124 let res, ops, todo = eval_trans auto ns1 ns2 trl in
125 let code, not_marking = ResJIT.compile ops in
126 let todo_code, todo_notmarking =
127 List.fold_left (fun (l, b) (p, q, o) -> let c, b' = ResJIT.compile o in
128 (p, q, c)::l, b && b')
129 ([], not_marking) todo
131 let opcode = res, code, todo_notmarking, todo_code in
134 let gen_code auto tlist s1 s2 =
135 let res, code, not_marking, todo_code = compile auto tlist s1 s2 in
137 if todo_code == [] then
138 if not_marking then begin fun empty_slot sl1 sl2 _ node ->
139 let slot1_empty = sl1 == empty_slot
140 and slot2_empty = sl2 == empty_slot in
141 if slot1_empty && slot2_empty then res,sl2
146 Array.copy empty_slot
150 U.exec sl sl1 sl2 node code;
153 else (* marking *) begin fun empty_slot sl1 sl2 _ node ->
155 if sl2 == empty_slot then
156 if sl1 == empty_slot then
157 Array.copy empty_slot
161 U.exec sl sl1 sl2 node code;
164 else (* todo != [] *)
165 begin fun empty_slot sl1 sl2 tree node ->
167 if sl2 == empty_slot then
168 if sl1 == empty_slot then
169 Array.copy empty_slot
173 U.exec sl sl1 sl2 node code;
175 (fun ares (p, q, code) ->
176 if !p tree node then begin
177 if code != ResJIT.Nil then U.exec sl sl1 sl2 node code;
180 else ares) res todo_code, sl
186 let cache_apply cache auto tlist s1 s2 =
187 let f = gen_code auto tlist s1 s2 in
188 add cache tlist s1 s2 f; f
191 DEFINE LOOP (t, states, ctx) = (
193 TRACE("top-down-run", 3,
194 __ "Entering node %i (tag %s, context %i) with states %a\n%!"
196 (Tag.to_string (Tree.tag tree _t))
198 (StateSet.print) (states));
199 if _t == Tree.nil then nil_res
201 let tag = Tree.tag tree _t in
203 _t tag (states) (ctx) (L2JIT.find cache2 tag (states))
206 DEFINE LOOP_TAG (t, states, tag, ctx) = (
207 let _t = (t) in (* to avoid duplicating expression t *)
208 if _t == Tree.nil then nil_res
211 _t (tag) (states) (ctx) (L2JIT.find cache2 (tag) (states)))
213 let top_down_run auto tree root states ctx =
214 let res_len = (StateSet.max_elt auto.states) + 1 in
215 let empty_slot = Array.create res_len U.NS.empty in
216 let nil_res = auto.bottom_states, empty_slot in
217 let cache3 = L3JIT.create () in
219 let l3jit_dispatch trl s1 s2 t sl1 sl2 =
220 let f = L3JIT.find cache3 trl s1 s2 in
221 if f == L3JIT.dummy then (L3JIT.cache_apply cache3 auto trl s1 s2) empty_slot sl1 sl2 tree t
222 else f empty_slot sl1 sl2 tree t
225 let cache2 = L2JIT.create () in
227 let () = D_TRACE_(at_exit (fun () -> L2JIT.stats Format.err_formatter cache2)) in
229 let rec l2jit_dispatch t tag states ctx opcode =
231 | L2JIT.RETURN () -> nil_res
233 let opcode = L2JIT.compile cache2 auto tree tag states in
234 l2jit_dispatch t tag states ctx opcode
236 | L2JIT.LEFT (tr_list, instr) ->
238 l2jit_dispatch_instr t tag states (Tree.closing tree t) instr true
240 l3jit_dispatch tr_list res1 auto.bottom_states t slot1 empty_slot
242 | L2JIT.RIGHT (tr_list, instr) ->
243 let res2, slot2 = l2jit_dispatch_instr t tag states ctx instr false in
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 tag states (Tree.closing tree t) instr1 true
250 let res2, slot2 = l2jit_dispatch_instr t tag states ctx instr2 false in
251 l3jit_dispatch tr_list res1 res2 t slot1 slot2
253 and l2jit_dispatch_instr t tag states ctx instr _left =
255 | L2JIT.NOP () -> nil_res
256 | L2JIT.FIRST_CHILD s -> LOOP ((Tree.first_child tree t), s, ctx)
257 | L2JIT.NEXT_SIBLING s -> LOOP ((Tree.next_sibling tree t), s, ctx)
259 | L2JIT.FIRST_ELEMENT s -> LOOP ((Tree.first_element tree t), s, ctx)
260 | L2JIT.NEXT_ELEMENT s -> LOOP ((Tree.next_element tree t), s, ctx)
262 | L2JIT.TAGGED_DESCENDANT (s, tag) ->
263 LOOP_TAG ((Tree.tagged_descendant tree t tag), s, tag, ctx)
265 | L2JIT.TAGGED_FOLLOWING (s, tag) ->
266 LOOP_TAG((Tree.tagged_following_before tree t tag ctx), s, tag, ctx)
268 | L2JIT.SELECT_DESCENDANT (s, _, us) ->
269 LOOP((Tree.select_descendant tree t us), s, ctx)
271 | L2JIT.SELECT_FOLLOWING (s, pt, us) ->
272 LOOP ((Tree.select_following_before tree t us ctx), s, ctx)
274 | L2JIT.TAGGED_CHILD (s, tag) ->
275 LOOP_TAG((Tree.tagged_child tree t tag), s, tag, ctx)
277 | L2JIT.TAGGED_FOLLOWING_SIBLING (s, tag) ->
278 LOOP_TAG((Tree.tagged_following_sibling tree t tag), s, tag, ctx)
280 | L2JIT.SELECT_CHILD (s, _, us) ->
281 LOOP ((Tree.select_child tree t us), s, ctx)
283 | L2JIT.SELECT_FOLLOWING_SIBLING (s, _, us) ->
284 LOOP ((Tree.select_following_sibling tree t us), s, ctx)
286 | L2JIT.TAGGED_SUBTREE(s, tag) ->
288 let count = U.NS.subtree_tags tree t tag in
289 if count != U.NS.empty then
290 let r = Array.copy empty_slot in
291 r.(auto.last) <- count;
296 | L2JIT.ELEMENT_SUBTREE(s) ->
298 let count = U.NS.subtree_elements tree t in
299 if count != U.NS.empty then
300 let r = Array.copy empty_slot in
301 r.(auto.last) <- count;
307 LOOP (root, states, ctx)
309 let full_top_down_run auto states tree root =
311 top_down_run auto tree root states (Tree.closing tree root)
313 let top_down_run auto tree root =
315 let res, slot = full_top_down_run auto auto.init tree root in
316 slot.(StateSet.min_elt auto.topdown_marking_states)
319 (*** Bottom-up evaluation function **)
322 Format.fprintf fmt "{ ";
323 U.NS.iter begin fun node ->
324 Format.fprintf fmt "%a " Node.print node;
326 Format.fprintf fmt "}"
328 let slot_print fmt t =
329 Array.iteri begin fun state ns ->
330 Format.eprintf "%a -> %a\n" State.print state ns_print ns;
334 let eval_trans auto tree parent res1 res2 = assert false
337 let bottom_up_run auto tree (query, pat) =
338 let leaves = Array.to_list (Tree.full_text_query query tree pat) in
339 let states = auto.states in
340 let res_len = (StateSet.max_elt states) + 1 in
341 let empty_slot = Array.create res_len U.NS.empty in
342 let nil_res = auto.bottom_states, empty_slot in
343 let cache = Cache.Lvl3.create 1024 L3JIT.dummy in
344 let rec loop_leaves l acc =
348 let res, lll = bottom_up_next node ll Tree.nil in
349 if (lll <> []) then Printf.eprintf "Leftover elements\n%!";
352 and bottom_up_next node rest stop =
353 let fs = Tree.first_child tree node in
355 if fs == Tree.nil then nil_res
356 else full_top_down_run auto states tree fs
358 move_up node res1 true rest stop
360 and move_up node res is_left rest stop =
361 if node == stop then res, rest
363 let prev_sibling = Tree.prev_sibling tree node in
364 let is_left' = prev_sibling == Tree.nil in
365 let real_parent = Tree.parent tree node in
367 if is_left' then real_parent else max (Tree.first_child tree real_parent) stop
369 (* let parent = if is_left' then Tree.parent tree node else prev_sibling in *)
370 let (s1, sl1), (s2, sl2), rest' =
371 if is_left then match rest with
372 [] -> res, nil_res, rest
374 if Tree.is_right_descendant tree node next
376 let res2, rest' = bottom_up_next next rest' node in
378 else res, nil_res, rest
382 let tag = Tree.tag tree node in
383 let id1 = Uid.to_int s1.StateSet.Node.id in
384 let id2 = Uid.to_int s2.StateSet.Node.id in
386 let code = Cache.Lvl3.find cache tag id1 id2 in
387 if code == L3JIT.dummy then
391 List.fold_left (fun acc' (labels, tr) ->
392 if labels == TagSet.any || TagSet.mem tag labels
393 then Translist.cons tr acc' else acc')
395 (Hashtbl.find auto.trans q)
400 let code = L3JIT.gen_code auto trl s1 s2 in
401 Cache.Lvl3.add cache tag id1 id2 code; code
404 let res' = code empty_slot sl1 sl2 tree node in
405 move_up parent res' is_left' rest' stop
407 let _, slot = loop_leaves leaves (nil_res) in
408 slot.(StateSet.min_elt auto.topdown_marking_states)