INCLUDE "debug.ml"
-INCLUDE "trace.ml"
+INCLUDE "log.ml"
INCLUDE "utils.ml"
open Format
val top_down_run : Ata.t -> Tree.t -> Tree.node -> result_set
val bottom_up_run : Ata.t -> Tree.t -> Compile.text_query * string -> result_set
val grammar_run : Ata.t -> Grammar2.t -> unit -> result_set
-
+ val naive_top_down_run : Ata.t -> Tree.t -> Tree.node -> result_set
+ val twopass_top_down_run : Ata.t -> Tree.t -> Tree.node -> result_set
end
module Make (U : ResJIT.S) : S with type result_set = U.NS.t =
let eval_form auto s1 s2 f =
let rec loop f =
- match Formula.expr f with
- | Formula.False | Formula.True | Formula.Pred _ -> f, []
- | Formula.Atom(`Left, b, q) ->
- Formula.of_bool (b == (StateSet.mem q s1)),
- if b && StateSet.mem q auto.topdown_marking_states then [ResJIT.LEFT q] else []
- | Formula.Atom (`Right, b, q) ->
- Formula.of_bool(b == (StateSet.mem q s2)),
- if b && StateSet.mem q auto.topdown_marking_states then [ResJIT.RIGHT q] else []
- | Formula.Atom (`Epsilon, _, _) -> assert false
-
- | Formula.Or(f1, f2) ->
- let b1, i1 = loop f1 in
- let b2, i2 = loop f2 in
- Formula.or_pred b1 b2, i1 @ i2
- | Formula.And(f1, f2) ->
- let b1, i1 = loop f1 in
- let b2, i2 = loop f2 in
- Formula.and_pred b1 b2, i1 @ i2
+ match Formula.expr f with
+ | Formula.False | Formula.True | Formula.Pred _ -> f, []
+ | Formula.Atom(`Left, b, q) ->
+ Formula.of_bool (b == (StateSet.mem q s1)),
+ if b && StateSet.mem q auto.topdown_marking_states then [ResJIT.LEFT q] else []
+ | Formula.Atom (`Right, b, q) ->
+ Formula.of_bool(b == (StateSet.mem q s2)),
+ if b && StateSet.mem q auto.topdown_marking_states then [ResJIT.RIGHT q] else []
+ | Formula.Atom (`Epsilon, _, _) -> assert false
+
+ | Formula.Or(f1, f2) ->
+ let b1, i1 = loop f1 in
+ let b2, i2 = loop f2 in
+ Formula.or_pred b1 b2, i1 @ i2
+ | Formula.And(f1, f2) ->
+ let b1, i1 = loop f1 in
+ let b2, i2 = loop f2 in
+ Formula.and_pred b1 b2, i1 @ i2
in
loop f
let eval_trans auto s1 s2 trans =
+ LOG(__ "top-down-run" 3 "Evaluating transition list:@\n%a" Translist.print trans);
Translist.fold
- (fun t ((a_st, a_op, a_todo) as acc)->
- let q, _, m, f = Transition.node t in
- let form, ops = eval_form auto s1 s2 f in
- match Formula.expr form with
- | Formula.True ->
- StateSet.add q a_st,
- (q, (if m then (ResJIT.SELF() :: ops) else ops)):: a_op,
- a_todo
- | Formula.False -> acc
- | Formula.Pred p -> a_st, a_op,
- (p.Tree.Predicate.node, q, [(q,(if m then (ResJIT.SELF() :: ops) else ops))]) :: a_todo
- | _ -> assert false
- ) trans (StateSet.empty, [], [])
+ (fun t ((a_st, a_op, a_todo) as acc)->
+ let q, _, m, f = Transition.node t in
+ let form, ops = eval_form auto s1 s2 f in
+ match Formula.expr form with
+ | Formula.True ->
+ StateSet.add q a_st,
+ (q, (if m then (ResJIT.SELF() :: ops) else ops)):: a_op,
+ a_todo
+ | Formula.False -> acc
+ | Formula.Pred p -> a_st, a_op,
+ (p.Tree.Predicate.node, q, [(q,(if m then (ResJIT.SELF() :: ops) else ops))]) :: a_todo
+ | _ -> assert false
+ ) trans (StateSet.empty, [], [])
module L3JIT =
struct
- type opcode = (t -> t -> t -> Tree.t -> Tree.node -> StateSet.t * t)
-
- type t = opcode Cache.Lvl3.t
-
- let dummy _ _ _ _ _ = failwith "Uninitialized L3JIT"
-
- let create () = Cache.Lvl3.create 1024 dummy
- let find t tlist s1 s2 =
- Cache.Lvl3.find t
- (Uid.to_int s2.StateSet.Node.id)
- (Uid.to_int s1.StateSet.Node.id)
- (Uid.to_int tlist.Translist.Node.id)
-
-
-
- let add t tlist s1 s2 v =
- Cache.Lvl3.add t
- (Uid.to_int s2.StateSet.Node.id)
- (Uid.to_int s1.StateSet.Node.id)
- (Uid.to_int tlist.Translist.Node.id)
- v
-
- let compile auto trl s1 s2 =
- let orig_s1, orig_s2 =
- Translist.fold (fun t (a1, a2) ->
- let _, _, _, f = Transition.node t in
- let (_, _, fs1), (_, _, fs2) = Formula.st f in
- (StateSet.union a1 fs1, StateSet.union a2 fs2)
- ) trl (StateSet.empty, StateSet.empty)
- in
- let ns1 = StateSet.inter s1 orig_s1
- and ns2 = StateSet.inter s2 orig_s2 in
- let res, ops, todo = eval_trans auto ns1 ns2 trl in
- let code, not_marking = ResJIT.compile ops in
- let todo_code, todo_notmarking =
- List.fold_left (fun (l, b) (p, q, o) -> let c, b' = ResJIT.compile o in
- (p, q, c)::l, b && b')
- ([], not_marking) todo
- in
- let opcode = res, code, todo_notmarking, todo_code in
- opcode
-
- let gen_code auto tlist s1 s2 =
- let res, code, not_marking, todo_code = compile auto tlist s1 s2 in
- let f =
- if todo_code == [] then
- if not_marking then begin fun empty_slot sl1 sl2 _ node ->
- let slot1_empty = sl1 == empty_slot
- and slot2_empty = sl2 == empty_slot in
- if slot1_empty && slot2_empty then res,sl2
- else
- let sl =
- if slot2_empty then
- if slot1_empty then
- Array.copy empty_slot
- else sl1
- else sl2
- in
- U.exec sl sl1 sl2 node code;
- res, sl
- end
- else (* marking *) begin fun empty_slot sl1 sl2 _ node ->
- let sl =
- if sl2 == empty_slot then
- if sl1 == empty_slot then
- Array.copy empty_slot
- else sl1
- else sl2
- in
- U.exec sl sl1 sl2 node code;
- res, sl
+ type opcode = (t -> t -> t -> Tree.t -> Tree.node -> StateSet.t * t)
+
+ type t = opcode Cache.Lvl3.t
+
+ let dummy _ _ _ _ _ = failwith "Uninitialized L3JIT"
+
+
+ let show_stats a =
+ let count = ref 0 in
+ Cache.Lvl3.iteri (fun _ _ _ _ b -> if not b then incr count) a;
+ Logger.print err_formatter "@?L3JIT: %i used entries@\n@?" !count
+ let create () =
+ let v = Cache.Lvl3.create 1024 dummy in
+ if !Options.verbose then at_exit (fun () -> show_stats v);
+ v
+
+ let find t tlist s1 s2 =
+ Cache.Lvl3.find t
+ (Uid.to_int s2.StateSet.Node.id)
+ (Uid.to_int s1.StateSet.Node.id)
+ (Uid.to_int tlist.Translist.Node.id)
+
+ let add t tlist s1 s2 v =
+ Cache.Lvl3.add t
+ (Uid.to_int s2.StateSet.Node.id)
+ (Uid.to_int s1.StateSet.Node.id)
+ (Uid.to_int tlist.Translist.Node.id)
+ v
+
+ let compile auto trl s1 s2 =
+ let orig_s1, orig_s2 =
+ Translist.fold (fun t (a1, a2) ->
+ let _, _, _, f = Transition.node t in
+ let fs1, fs2 = Formula.st f in
+ (StateSet.union a1 fs1, StateSet.union a2 fs2)
+ ) trl (StateSet.empty, StateSet.empty)
+ in
+ let ns1 = StateSet.inter s1 orig_s1
+ and ns2 = StateSet.inter s2 orig_s2 in
+ let res, ops, todo = eval_trans auto ns1 ns2 trl in
+ let code, not_marking = ResJIT.compile ops in
+ let todo_code, todo_notmarking =
+ List.fold_left (fun (l, b) (p, q, o) -> let c, b' = ResJIT.compile o in
+ (p, q, c)::l, b && b')
+ ([], not_marking) todo
+ in
+ let opcode = res, code, todo_notmarking, todo_code in
+ opcode
+
+ let choose_slot empty sl1 sl2 =
+ if sl1 != empty then sl1
+ else if sl2 != empty then sl2
+ else Array.copy empty
+
+ let gen_code auto tlist s1 s2 =
+ let res, code, not_marking, todo_code = compile auto tlist s1 s2 in
+ let f =
+ if todo_code == [] then begin
+ if not_marking then begin fun empty_slot sl1 sl2 _ node ->
+ if sl1 == empty_slot && sl2 == empty_slot then res, empty_slot
+ else
+ let sl = choose_slot empty_slot sl1 sl2 in
+ U.exec sl sl1 sl2 node code;
+ res, sl
+ end else (* marking *) begin fun empty_slot sl1 sl2 _ node ->
+ let sl = choose_slot empty_slot sl1 sl2 in
+ U.exec sl sl1 sl2 node code;
+ res, sl
end
- else (* todo != [] *)
- begin fun empty_slot sl1 sl2 tree node ->
- let sl =
- if sl2 == empty_slot then
- if sl1 == empty_slot then
- Array.copy empty_slot
- else sl1
- else sl2
- in
- U.exec sl sl1 sl2 node code;
- List.fold_left
- (fun ares (p, q, code) ->
- if !p tree node then begin
- if code != ResJIT.Nil then U.exec sl sl1 sl2 node code;
- StateSet.add q ares
- end
- else ares) res todo_code, sl
-
- end
- in
- f
-
- let cache_apply cache auto tlist s1 s2 =
- let f = gen_code auto tlist s1 s2 in
- TRACE("grammar", 2, __ "Inserting: %i, %a, %a\n%!"
- (Uid.to_int tlist.Translist.Node.id) StateSet.print s1 StateSet.print s2);
- add cache tlist s1 s2 f; f
+ end else (* todo_code *) begin fun empty_slot sl1 sl2 tree node ->
+ let sl = choose_slot empty_slot sl1 sl2 in
+ U.exec sl sl1 sl2 node code;
+ List.fold_left
+ (fun ares (p, q, code) ->
+ if !p tree node then begin
+ if code != ResJIT.Nil then U.exec sl sl1 sl2 node code;
+ StateSet.add q ares
+ end
+ else ares) res todo_code, sl
+ end
+ in
+ f
+
+ let cache_apply cache auto tlist s1 s2 =
+ let f = gen_code auto tlist s1 s2 in
+ LOG(__ "grammar" 2 "Inserting: %i, %a, %a\n%!"
+ (Uid.to_int tlist.Translist.Node.id) StateSet.print s1 StateSet.print s2);
+ add cache tlist s1 s2 f; f
end
DEFINE LOOP (t, states, ctx) = (
- let _t = (t) in
- TRACE("top-down-run", 3,
- __ "Entering node %i with loop (tag %s, context %i) with states %a\n%!"
- (Node.to_int _t)
- (Tag.to_string (Tree.tag tree _t))
- (Node.to_int (ctx))
- (StateSet.print) (states));
+ let _t = t in
+ LOG(__ "top-down-run" 3
+ "Entering node %i with loop (tag %s, context %i) with states %a"
+ (Node.to_int _t)
+ (Tag.to_string (Tree.tag tree _t))
+ (Node.to_int (ctx))
+ (StateSet.print) (states));
if _t == Tree.nil then nil_res
else
let tag = Tree.tag tree _t in
DEFINE LOOP_TAG (t, states, tag, ctx) = (
let _t = (t) in (* to avoid duplicating expression t *)
- TRACE("top-down-run", 3,
- __ "Entering node %i with loop_tag (tag %s, context %i) with states %a\n%!"
- (Node.to_int _t)
- (Tag.to_string (tag))
- (Node.to_int (ctx))
- (StateSet.print) (states));
+ LOG(__ "top-down-run" 3
+ "Entering node %i with loop_tag (tag %s, context %i) with states %a"
+ (Node.to_int _t)
+ (Tag.to_string (tag))
+ (Node.to_int (ctx))
+ (StateSet.print) (states));
if _t == Tree.nil then nil_res
else
l2jit_dispatch
let res_len = StateSet.max_elt auto.states + 1 in
let empty_slot = Array.create res_len U.NS.empty in
let nil_res = auto.bottom_states, empty_slot in
- let cache3 = L3JIT.create () in
+ let mark_subtree s subtree =
+ if subtree != U.NS.empty then
+ let r = Array.copy empty_slot in
+ r.(auto.last) <- subtree;
+ s, r
+ else
+ s, empty_slot
+ in
+ let cache3 = L3JIT.create () in
let l3jit_dispatch trl s1 s2 t sl1 sl2 =
- let f = L3JIT.find cache3 trl s1 s2 in
- if f == L3JIT.dummy then (L3JIT.cache_apply cache3 auto trl s1 s2) empty_slot sl1 sl2 tree t
- else f empty_slot sl1 sl2 tree t
-
+ let f = L3JIT.find cache3 trl s1 s2 in
+ if f == L3JIT.dummy then (L3JIT.cache_apply cache3 auto trl s1 s2) empty_slot sl1 sl2 tree t
+ else f empty_slot sl1 sl2 tree t
in
let cache2 = L2JIT.create () in
-
-
- let rec l2jit_dispatch t tag states ctx opcode =
- match opcode with
- | L2JIT.RETURN -> nil_res
- | L2JIT.CACHE ->
- let opcode = L2JIT.compile cache2 auto tree tag states in
- l2jit_dispatch t tag states ctx opcode
-
- | L2JIT.LEFT (tr_list, instr) ->
- let res1, slot1 =
- l2jit_dispatch_instr t tag states (Tree.closing tree t) instr
- in
- l3jit_dispatch tr_list res1 auto.bottom_states t slot1 empty_slot
-
- | L2JIT.RIGHT (tr_list, instr) ->
- let res2, slot2 = l2jit_dispatch_instr t tag states ctx instr in
- l3jit_dispatch tr_list auto.bottom_states res2 t empty_slot slot2
-
- | L2JIT.BOTH (tr_list, instr1, instr2) ->
- let res1, slot1 =
- l2jit_dispatch_instr t tag states (Tree.closing tree t) instr1
- in
- let res2, slot2 = l2jit_dispatch_instr t tag states ctx instr2 in
- l3jit_dispatch tr_list res1 res2 t slot1 slot2
-
- and l2jit_dispatch_instr t tag states ctx instr =
- match instr with
- | L2JIT.FIRST_CHILD s -> LOOP ((Tree.first_child tree t), s, ctx)
- | L2JIT.NEXT_SIBLING s -> LOOP ((Tree.next_sibling tree t), s, ctx)
-
- | L2JIT.FIRST_ELEMENT s -> LOOP ((Tree.first_element tree t), s, ctx)
- | L2JIT.NEXT_ELEMENT s -> LOOP ((Tree.next_element tree t), s, ctx)
-
- | L2JIT.TAGGED_DESCENDANT (s, tag) ->
- LOOP_TAG ((Tree.tagged_descendant tree t tag), s, tag, ctx)
-
- | L2JIT.TAGGED_FOLLOWING (s, tag) ->
- LOOP_TAG((Tree.tagged_following_before tree t tag ctx), s, tag, ctx)
-
- | L2JIT.SELECT_DESCENDANT (s, _, us) ->
- LOOP((Tree.select_descendant tree t us), s, ctx)
-
- | L2JIT.SELECT_FOLLOWING (s, pt, us) ->
- LOOP ((Tree.select_following_before tree t us ctx), s, ctx)
-
- | L2JIT.TAGGED_CHILD (s, tag) ->
- LOOP_TAG((Tree.tagged_child tree t tag), s, tag, ctx)
-
- | L2JIT.TAGGED_FOLLOWING_SIBLING (s, tag) ->
- LOOP_TAG((Tree.tagged_following_sibling tree t tag), s, tag, ctx)
-
- | L2JIT.SELECT_CHILD (s, _, us) ->
- LOOP ((Tree.select_child tree t us), s, ctx)
-
- | L2JIT.SELECT_FOLLOWING_SIBLING (s, _, us) ->
- LOOP ((Tree.select_following_sibling tree t us), s, ctx)
-
- | L2JIT.TAGGED_SUBTREE(s, tag) ->
-
- let count = U.NS.subtree_tags tree t tag in
- if count != U.NS.empty then
- let r = Array.copy empty_slot in
- r.(auto.last) <- count;
- s,r
- else
- s,empty_slot
-
- | L2JIT.ELEMENT_SUBTREE(s) ->
-
- let count = U.NS.subtree_elements tree t in
- if count != U.NS.empty then
- let r = Array.copy empty_slot in
- r.(auto.last) <- count;
- s,r
- else
- s,empty_slot
-
+ let rec loop t states ctx =
+ if t == Tree.nil then nil_res
+ else
+ let tag = Tree.tag tree t in
+ l2jit_dispatch
+ t tag (states) (ctx) (L2JIT.find cache2 tag (states))
+ and loop_tag t states ctx tag =
+ if t == Tree.nil then nil_res
+ else
+ l2jit_dispatch
+ t (tag) (states) (ctx) (L2JIT.find cache2 (tag) (states))
+
+ and l2jit_dispatch t tag states ctx opcode =
+ match opcode with
+ | L2JIT.RETURN _ -> nil_res
+ | L2JIT.LEFT (tr_list, instr) ->
+ let res1, slot1 =
+ l2jit_dispatch_instr t (Tree.closing tree t) instr
+ in
+ l3jit_dispatch tr_list res1 auto.bottom_states t slot1 empty_slot
+
+ | L2JIT.RIGHT (tr_list, instr) ->
+ let res2, slot2 =
+ l2jit_dispatch_instr t ctx instr
+ in
+ l3jit_dispatch tr_list auto.bottom_states res2 t empty_slot slot2
+
+ | L2JIT.BOTH (tr_list, instr1, instr2) ->
+ let res1, slot1 =
+ l2jit_dispatch_instr t (Tree.closing tree t) instr1
+ in
+ let res2, slot2 =
+ l2jit_dispatch_instr t ctx instr2
+ in
+ l3jit_dispatch tr_list res1 res2 t slot1 slot2
+ | L2JIT.CACHE _ ->
+ LOG(__ "top-down-run" 3
+ "Top-down cache miss for configuration %s %a"
+ (Tag.to_string tag) StateSet.print states);
+ l2jit_dispatch t tag states ctx
+ (L2JIT.compile cache2 auto tree tag states)
+
+ and l2jit_dispatch_instr t ctx instr =
+ LOG(__ "top-down-run" 3 "Dispatching instr: %a on node %i (context=%i)"
+ L2JIT.print_jump instr (Node.to_int t) (Node.to_int ctx));
+ match instr with
+ | L2JIT.NOP _ -> nil_res
+ | L2JIT.FIRST_CHILD s -> loop (Tree.first_child tree t) s ctx
+ | L2JIT.NEXT_SIBLING s -> loop (Tree.next_sibling tree t) s ctx
+
+ | L2JIT.FIRST_ELEMENT s -> loop (Tree.first_element tree t) s ctx
+ | L2JIT.NEXT_ELEMENT s -> loop (Tree.next_element tree t) s ctx
+
+ | L2JIT.TAGGED_DESCENDANT (s, tag) ->
+ loop_tag (Tree.tagged_descendant tree t tag) s ctx tag
+
+ | L2JIT.TAGGED_FOLLOWING (s, tag) ->
+ loop_tag (Tree.tagged_following_before tree t tag ctx) s ctx tag
+
+ | L2JIT.SELECT_DESCENDANT (s, _, us) ->
+ loop (Tree.select_descendant tree t us) s ctx
+
+ | L2JIT.SELECT_FOLLOWING (s, pt, us) ->
+ loop (Tree.select_following_before tree t us ctx) s ctx
+
+ | L2JIT.TAGGED_CHILD (s, tag) ->
+ loop_tag (Tree.tagged_child tree t tag) s ctx tag
+
+ | L2JIT.TAGGED_SIBLING (s, tag) ->
+ loop_tag (Tree.tagged_sibling tree t tag) s ctx tag
+
+ | L2JIT.SELECT_CHILD (s, _, us) ->
+ loop (Tree.select_child tree t us) s ctx
+
+ | L2JIT.SELECT_SIBLING (s, _, us) ->
+ loop (Tree.select_sibling tree t us) s ctx
+
+ | L2JIT.TAGGED_SUBTREE(s, tag) ->
+ mark_subtree s (U.NS.subtree_tags tree t tag)
+
+ | L2JIT.ELEMENT_SUBTREE(s) ->
+ mark_subtree s (U.NS.subtree_elements tree t)
in
- let r = LOOP (root, states, ctx) in
- (*L3JIT.stats err_formatter cache3; *)
+ let r = loop root states ctx in
r
let full_top_down_run auto states tree root =
- (*Ata.init (); *)
top_down_run auto tree root states (Tree.closing tree root)
let top_down_run auto tree root =
- (*Ata.init (); *)
+ Ata.init ();
let res, slot = full_top_down_run auto auto.init tree root in
-
slot.(StateSet.min_elt auto.topdown_marking_states)
(*** Bottom-up evaluation function **)
- let ns_print fmt t =
- Format.fprintf fmt "{ ";
- U.NS.iter begin fun node ->
- Format.fprintf fmt "%a " Node.print node;
- end t;
- Format.fprintf fmt "}"
-
- let slot_print fmt t =
- Array.iteri begin fun state ns ->
- Format.eprintf "%a -> %a\n" State.print state ns_print ns;
- end t
+ let eval_trans auto tree parent res1 res2 = assert false
+ let rec uniq = function
+ | ([] | [ _ ]) as l -> l
+ | e1 :: ((e2 :: ll) as l) -> if e1 == e2 then uniq l
+ else e1 :: e2 :: (uniq ll);;
- let eval_trans auto tree parent res1 res2 = assert false
+DEFINE BOTTOM_UP_NEXT(node, rest, stop) =
+ (let ___fs = Tree.first_child tree node in
+ let ___res1 =
+ if ___fs == Tree.nil then nil_res
+ else full_top_down_run auto states tree ___fs
+ in
+ move_up node ___res1 true rest stop)
let bottom_up_run auto tree (query, pat) =
- let leaves = Array.to_list (Tree.full_text_query query tree pat) in
+ let array = time ~msg:"Timing text query" (Tree.full_text_query query tree) pat in
+ let leaves = Array.to_list array in
let states = auto.states in
let res_len = (StateSet.max_elt states) + 1 in
let empty_slot = Array.create res_len U.NS.empty in
let nil_res = auto.bottom_states, empty_slot in
- let cache = Cache.Lvl3.create 1024 L3JIT.dummy in
- let rec loop_leaves l acc =
- match l with
- [] -> acc
- | node :: ll ->
- let res, lll = bottom_up_next node ll Tree.nil in
- if (lll <> []) then Printf.eprintf "Leftover elements\n%!";
- res
-
- and bottom_up_next node rest stop =
- let fs = Tree.first_child tree node in
- let res1 =
- if fs == Tree.nil then nil_res
- else full_top_down_run auto states tree fs
- in
- move_up node res1 true rest stop
-
- and move_up node res is_left rest stop =
- if node == stop then res, rest
- else
- let prev_sibling = Tree.prev_sibling tree node in
- let is_left' = prev_sibling == Tree.nil in
- let real_parent = Tree.parent tree node in
- let parent =
- if is_left' then real_parent else max (Tree.first_child tree real_parent) stop
- in
- (* let parent = if is_left' then Tree.parent tree node else prev_sibling in *)
- let (s1, sl1), (s2, sl2), rest' =
- if is_left then match rest with
- [] -> res, nil_res, rest
- | next :: rest' ->
- if Tree.is_right_descendant tree node next
- then
- let res2, rest' = bottom_up_next next rest' node in
- res, res2, rest'
- else res, nil_res, rest
- else
- nil_res, res, rest
- in
- let tag = Tree.tag tree node in
- let id1 = Uid.to_int s1.StateSet.Node.id in
- let id2 = Uid.to_int s2.StateSet.Node.id in
- let code =
- let code = Cache.Lvl3.find cache tag id1 id2 in
- if code == L3JIT.dummy then
- let trl =
- StateSet.fold
- (fun q acc ->
- List.fold_left (fun acc' (labels, tr) ->
- if labels == TagSet.any || TagSet.mem tag labels
- then Translist.cons tr acc' else acc')
- acc
- (Hashtbl.find auto.trans q)
- )
- states
- Translist.nil
- in
- let code = L3JIT.gen_code auto trl s1 s2 in
- Cache.Lvl3.add cache tag id1 id2 code; code
- else code
- in
- let res' = code empty_slot sl1 sl2 tree node in
- move_up parent res' is_left' rest' stop
+ let cache = Cache.Lvl3.create 0 L3JIT.dummy in
+ let rec move_up node res is_left rest stop =
+ if node == stop then res, rest
+ else
+ (*let prev_sibling = Tree.prev_sibling tree node in *)
+ let is_left' = Tree.is_first_child tree node (*prev_sibling == Tree.nil*) in
+ (*TODO: unsound in case of following-sibling moves
+ should replace the else by previous_sibling and walk up the sequence of
+ right child moves *)
+ let parent = if is_left' then Tree.parent tree node else
+ let p = Tree.first_child tree (Tree.parent tree node) in
+ if p < stop then stop else p
+ in
+ let (s1, sl1), (s2, sl2), rest' =
+ if is_left then match rest with
+ [] -> res, nil_res, rest
+ | next :: rest' ->
+ if Tree.is_right_descendant tree node next
+ then
+ let res2, rest' = (*bottom_up_next*) BOTTOM_UP_NEXT(next, rest', node) in
+ res, res2, rest'
+ else res, nil_res, rest
+ else
+ nil_res, res, rest
+ in
+ let tag = Tree.tag tree node in
+ let id1 = Uid.to_int s1.StateSet.Node.id in
+ let id2 = Uid.to_int s2.StateSet.Node.id in
+ let code =
+ let code = Cache.Lvl3.find cache id2 id1 tag in
+ if code == L3JIT.dummy then
+ let trl =
+ StateSet.fold
+ (fun q acc ->
+ List.fold_left (fun acc' (labels, tr) ->
+ if TagSet.mem tag labels
+ then Translist.cons tr acc' else acc')
+ acc
+ (Hashtbl.find auto.trans q)
+ )
+ states
+ Translist.nil
+ in
+ let code = L3JIT.gen_code auto trl s1 s2 in
+ Cache.Lvl3.add cache id2 id1 tag code; code
+ else code
+ in
+ let res' = code empty_slot sl1 sl2 tree node in
+ move_up parent res' is_left' rest' stop
in
- let _, slot = loop_leaves leaves (nil_res) in
- slot.(StateSet.min_elt auto.topdown_marking_states)
+ let loop_leaves l =
+ match l with
+ [] -> nil_res
+ | node :: ll ->
+ let res, lll = BOTTOM_UP_NEXT( (*bottom_up_next*) node, ll, Tree.nil) in
+ if lll <> [] then
+ Logger.print err_formatter "WARNING: Leftover nodes: %i\n" (List.length lll);
+ res
+ in
+ let _, slot = loop_leaves leaves in
+ slot.(StateSet.min_elt auto.topdown_marking_states)
+
let get_trans g auto tag states =
StateSet.fold (fun q tr_acc ->
List.fold_left
(fun ((lstates, rstates, tacc) as acc) (ts, trs) ->
if TagSet.mem (Tag.translate tag) ts then
- if not (TagSet.mem Tag.attribute ts) && Grammar2.is_attribute g tag
- then acc
- else
+ if not (TagSet.mem Tag.attribute ts) && Grammar2.is_attribute g tag
+ then acc
+ else
let _, _, _, phi = Transition.node trs in
- let (_,_,l), (_,_,r) = Formula.st phi in
+ let l, r = Formula.st phi in
(StateSet.union l lstates,
StateSet.union r rstates,
Translist.cons trs tacc)
module K_up = struct
type t = Grammar2.n_symbol * StateSet.t * StateSet.t * StateSet.t
let hash (a,b,c,d) =
- HASHINT4 (Node.to_int a,
- Uid.to_int b.StateSet.Node.id,
- Uid.to_int c.StateSet.Node.id,
- Uid.to_int d.StateSet.Node.id)
+ HASHINT4 (Node.to_int a,
+ Uid.to_int b.StateSet.Node.id,
+ Uid.to_int c.StateSet.Node.id,
+ Uid.to_int d.StateSet.Node.id)
let equal (a1, b1, c1, d1) (a2, b2, c2, d2) =
- a1 == a2 && b1 == b2 && c1 == c2 && d1 == d2
+ a1 == a2 && b1 == b2 && c1 == c2 && d1 == d2
end
module DCache =
struct
- include Hashtbl.Make(K_down)
- let dummy = StateSet.singleton State.dummy
- let notfound l = l.(0) == dummy && l.(1) == dummy
- let find h k =
- try
- find h k
- with
- Not_found ->
- let a = [| dummy; dummy |] in
- add h k a;
- a
+ include Hashtbl.Make(K_down)
+ let dummy = StateSet.singleton State.dummy
+ let notfound l = l.(0) == dummy && l.(1) == dummy
+ let find h k =
+ try
+ find h k
+ with
+ Not_found ->
+ let a = [| dummy; dummy |] in
+ add h k a;
+ a
end
module UCache = Hashtbl.Make(K_up)
type result = {
}
let mk_empty e =
{ in0 = StateSet.empty;
- in1 = StateSet.empty;
- out0 = e;
- out1 = e;
- main = e
+ in1 = StateSet.empty;
+ out0 = e;
+ out1 = e;
+ main = e
}
let mk_nil s v =
{
- mk_empty (s,v) with
- out0 = StateSet.empty,v;
- out1 = StateSet.empty,v;
+ mk_empty (s,v) with
+ out0 = StateSet.empty,v;
+ out1 = StateSet.empty,v;
}
let grammar_run auto g () =
let res_len = (StateSet.max_elt auto.states) + 1 in
let empty_slot = Array.create res_len U.NS.empty in
let nil_res = mk_nil auto.bottom_states empty_slot in
- let empty_res = mk_empty (StateSet.empty, empty_slot) in
let cache3 = L3JIT.create () in
let dummy2 = (StateSet.empty, StateSet.empty, Translist.nil) in
let cache2 = Cache.Lvl2.create 512 dummy2 in
let rule_counter = ref 0 in
let preorder_counter = ref 0 in
- let dcache = DCache.create 1023 in
- let ucache = UCache.create 1023 in
let term_array = [| StateSet.empty; StateSet.empty |] in
let get_trans tag states =
- let c = Cache.Lvl2.find cache2 tag (Uid.to_int states.StateSet.Node.id) in
- if c == dummy2 then
- let c = get_trans g auto tag states in
- begin
- Cache.Lvl2.add cache2 tag (Uid.to_int states.StateSet.Node.id) c;
- c
- end
- else c
+ let c = Cache.Lvl2.find cache2 tag (Uid.to_int states.StateSet.Node.id) in
+ if c == dummy2 then
+ let c = get_trans g auto tag states in
+ begin
+ Cache.Lvl2.add cache2 tag (Uid.to_int states.StateSet.Node.id) c;
+ c
+ end
+ else c
in
let lambda = ref 0 in
let rec start_loop idx states =
- TRACE("grammar", 2, __ "Node %i\n%!" (Node.to_int idx));
- if states == dummy_set then nil_res else
- if idx < Node.null then nil_res
- else begin
- let symbol = Grammar2.start_tag g idx in
- let fc = Grammar2.start_first_child g idx in
- let ns = Grammar2.start_next_sibling g fc in
- if Grammar2.is_terminal g symbol then
- let t = Grammar2.terminal symbol in
- terminal_loop t states (Grammar2.Leaf (~-1,0,term_array, fc)) (Grammar2.Leaf (~-1,1,term_array, ns))
- else
- let nt = Grammar2.non_terminal symbol in
- incr lambda;
- let lmbd = !lambda in
- let y0 = (Grammar2.Leaf (lmbd,0, term_array, fc))
- and y1 = (Grammar2.Leaf (lmbd,1, term_array, ns)) in
- rule_loop nt states y0 y1
- end
+ LOG(__ "grammar" 2 "Node %i\n%!" (Node.to_int idx));
+ if states == dummy_set then nil_res else
+ if idx < Node.null then nil_res
+ else begin
+ let symbol = Grammar2.start_tag g idx in
+ let fc = Grammar2.start_first_child g idx in
+ let ns = Grammar2.start_next_sibling g fc in
+ if Grammar2.is_terminal g symbol then
+ let t = Grammar2.terminal symbol in
+ terminal_loop t states (Grammar2.Leaf (~-1,0,term_array, fc)) (Grammar2.Leaf (~-1,1,term_array, ns))
+ else
+ let nt = Grammar2.non_terminal symbol in
+ incr lambda;
+ let lmbd = !lambda in
+ let y0 = (Grammar2.Leaf (lmbd,0, term_array, fc))
+ and y1 = (Grammar2.Leaf (lmbd,1, term_array, ns)) in
+ rule_loop nt states y0 y1
+ end
and rule_loop (t : Grammar2.n_symbol) states y0 y1 =
- if t = Node.nil || states == dummy_set then nil_res else
- let () = incr rule_counter in
- if !rule_counter land 65535 == 0 then begin Gc.minor() end;
- let k = (t, states) in
- let pstates = DCache.find dcache k in
- let notfound = DCache.notfound pstates in
- let rhs = Grammar2.get_rule g t in
- let id1 = Grammar2.get_id1 rhs in
- let id2 = Grammar2.get_id2 rhs in
- let conf = Grammar2.get_conf rhs in
- if notfound then
- let ny0 = dispatch_param0 conf id2 y0 y1 in
- let ny1 = dispatch_param1 conf id2 y0 y1 in
- let res = dispatch_loop id1 states ny0 ny1 in
- pstates.(0) <- res.in0;
- pstates.(1) <- res.in1;
- res (*
- UCache.add ucache (t, states, fst res.out0, fst res.out1)
- res.main;
- let h = Hashtbl.create 7 in
- for i = 0 to res_len - 1 do
- Hashtbl.add h (0, i) (snd res.out0).(i);
- Hashtbl.add h (1, i) (snd res.out1).(i);
- done;
- { res with
- main = ((fst res.main), (U.close h (snd res.main)));
- } *)
-
- else
- let res0 = partial_loop y0 pstates.(0) in
- let res1 = partial_loop y1 pstates.(1) in
- let k2 = (t, states, fst res0.main, fst res1.main) in
- let s, r =
- try
- UCache.find ucache k2
- with
- Not_found ->
- let ores0 = { res0 with main = fst res0.main, U.var 0 (snd res0.main) }
- and ores1 = { res1 with main = fst res1.main, U.var 1 (snd res1.main) }
- in
- let res = dispatch_loop id1 states (Grammar2.Cache (0,ores0)) (Grammar2.Cache (1, ores1)) in
- UCache.add ucache k2 res.main;
- res.main
- in
- let h = Hashtbl.create 7 in
- for i = 0 to res_len - 1 do
- Hashtbl.add h (0, i) (snd res0.main).(i);
- Hashtbl.add h (1, i) (snd res1.main).(i);
- done;
- { in0 = pstates.(0);
- in1 = pstates.(1);
- out0 = res0.main;
- out1 = res1.main;
- main = s, U.close h r;
- }
-
+ if t = Node.nil || states == dummy_set then nil_res else
+ let () = incr rule_counter in
+ if !rule_counter land 65535 == 0 then begin Gc.minor() end;
+(* let k = (t, states) in*)
+(* let pstates = DCache.find dcache k in
+ let notfound = DCache.notfound pstates in *)
+ let rhs = Grammar2.get_rule g t in
+ let id1 = Grammar2.get_id1 rhs in
+ let id2 = Grammar2.get_id2 rhs in
+ let conf = Grammar2.get_conf rhs in
+(* if notfound then*)
+ let ny0 = dispatch_param0 conf id2 y0 y1 in
+ let ny1 = dispatch_param1 conf id2 y0 y1 in
+ let res = dispatch_loop id1 states ny0 ny1 in
+(* pstates.(0) <- res.in0;
+ pstates.(1) <- res.in1; *)
+ res (*
+ UCache.add ucache (t, states, fst res.out0, fst res.out1)
+ res.main;
+ let h = Hashtbl.create 7 in
+ for i = 0 to res_len - 1 do
+ Hashtbl.add h (0, i) (snd res.out0).(i);
+ Hashtbl.add h (1, i) (snd res.out1).(i);
+ done;
+ { res with
+ main = ((fst res.main), (U.close h (snd res.main)));
+ } *)
+(*
+ else
+ let res0 = partial_loop y0 pstates.(0) in
+ let res1 = partial_loop y1 pstates.(1) in
+ let k2 = (t, states, fst res0.main, fst res1.main) in
+ let s, r =
+ try
+ UCache.find ucache k2
+ with
+ Not_found ->
+ let ores0 = { res0 with main = fst res0.main, U.var 0 (snd res0.main) }
+ and ores1 = { res1 with main = fst res1.main, U.var 1 (snd res1.main) }
+ in
+ let res = dispatch_loop id1 states (Grammar2.Cache (0,ores0)) (Grammar2.Cache (1, ores1)) in
+ UCache.add ucache k2 res.main;
+ res.main
+ in
+ let h = Hashtbl.create 7 in
+ for i = 0 to res_len - 1 do
+ Hashtbl.add h (0, i) (snd res0.main).(i);
+ Hashtbl.add h (1, i) (snd res1.main).(i);
+ done;
+ { in0 = pstates.(0);
+ in1 = pstates.(1);
+ out0 = res0.main;
+ out1 = res1.main;
+ main = s, U.close h r;
+ }
+*)
and dispatch_loop id1 states ny0 ny1 =
- if Grammar2.is_non_terminal g id1 then
- rule_loop (Grammar2.non_terminal id1) states ny0 ny1
- else
- terminal_loop (Grammar2.terminal id1) states ny0 ny1
+ if Grammar2.is_non_terminal g id1 then
+ rule_loop (Grammar2.non_terminal id1) states ny0 ny1
+ else
+ terminal_loop (Grammar2.terminal id1) states ny0 ny1
and terminal_loop (symbol : Grammar2.t_symbol) states y0 y1 =
- if symbol == Grammar2.nil_symbol || symbol = Node.nil || states == dummy_set then nil_res else begin
- let tag = Grammar2.tag symbol in
- let lst, rst, trans = get_trans tag states in
- let res0 = partial_loop y0 lst in
- let res1 = partial_loop y1 rst in
- let s1, slot1 = res0.main
- and s2, slot2 = res1.main in
- let opcode = L3JIT.find cache3 trans s1 s2 in
- let node = Node.of_int !preorder_counter in
- incr preorder_counter;
- let res =
- if opcode == L3JIT.dummy then
- (L3JIT.cache_apply cache3 auto trans s1 s2) empty_slot slot1 slot2 (Obj.magic ()) node
- else
- opcode empty_slot slot1 slot2 (Obj.magic()) (node)
- in
- { in0 = lst;
- in1 = rst;
- out0 = res0.main;
- out1 = res1.main;
- main = res }
- end
+ if symbol == Grammar2.nil_symbol || symbol = Node.nil || states == dummy_set then nil_res else begin
+ let tag = Grammar2.tag symbol in
+ let lst, rst, trans = get_trans tag states in
+ let res0 = partial_loop y0 lst in
+ let res1 = partial_loop y1 rst in
+ let s1, slot1 = res0.main
+ and s2, slot2 = res1.main in
+ let opcode = L3JIT.find cache3 trans s1 s2 in
+ let node = Node.of_int !preorder_counter in
+ incr preorder_counter;
+ let res =
+ if opcode == L3JIT.dummy then
+ (L3JIT.cache_apply cache3 auto trans s1 s2) empty_slot slot1 slot2 (Obj.magic ()) node
+ else
+ opcode empty_slot slot1 slot2 (Obj.magic()) (node)
+ in
+ { in0 = lst;
+ in1 = rst;
+ out0 = res0.main;
+ out1 = res1.main;
+ main = res }
+ end
and partial_loop l states =
- if l == dummy_leaf then nil_res else
- match l with
- | Grammar2.Cache (_, r) -> r
- | Grammar2.Leaf (_,_, _, id) -> start_loop id states
- | Grammar2.Node0 id ->
- if (Grammar2.terminal id) == Grammar2.nil_symbol then nil_res
- else
- rule_loop (Grammar2.non_terminal id) states dummy_leaf dummy_leaf
-
- | Grammar2.Node1 (id, y0) ->
- rule_loop (Grammar2.non_terminal id) states y0 dummy_leaf
- | Grammar2.Node2 (id, y0, y1) ->
- if Grammar2.is_terminal g id then
- terminal_loop (Grammar2.terminal id) states y0 y1
- else
- rule_loop (Grammar2.non_terminal id) states y0 y1
+ if l == dummy_leaf then nil_res else
+ match l with
+ | Grammar2.Cache (_, r) -> r
+ | Grammar2.Leaf (_,_, _, id) -> start_loop id states
+ | Grammar2.Node0 id ->
+ if (Grammar2.terminal id) == Grammar2.nil_symbol then nil_res
+ else
+ rule_loop (Grammar2.non_terminal id) states dummy_leaf dummy_leaf
+
+ | Grammar2.Node1 (id, y0) ->
+ rule_loop (Grammar2.non_terminal id) states y0 dummy_leaf
+ | Grammar2.Node2 (id, y0, y1) ->
+ if Grammar2.is_terminal g id then
+ terminal_loop (Grammar2.terminal id) states y0 y1
+ else
+ rule_loop (Grammar2.non_terminal id) states y0 y1
in
let (_, slot) = (start_loop (Node.null) auto.init).main in
;;
+ (* Slow reference top-down implementation *)
+ let naive_top_down auto tree root states ctx =
+ let res_len = StateSet.max_elt auto.states + 1 in
+ let empty_slot = Array.create res_len U.NS.empty in
+ let nil_res = auto.bottom_states, empty_slot in
+ let cache3 = L3JIT.create () in
+ let l3jit_dispatch trl s1 s2 t sl1 sl2 =
+ let f = L3JIT.find cache3 trl s1 s2 in
+ if f == L3JIT.dummy then (L3JIT.cache_apply cache3 auto trl s1 s2) empty_slot sl1 sl2 tree t
+ else f empty_slot sl1 sl2 tree t
+ in
+ let dummy = Translist.nil, StateSet.singleton State.dummy, StateSet.singleton State.dummy in
+ let cache2 = Cache.Lvl2.create 512 dummy in
+ let rec loop t states ctx =
+ if states == StateSet.empty then nil_res
+ else if t == Tree.nil then (*StateSet.inter states auto.bottom_states, empty_slot *) nil_res
+ else
+ let tag = Tree.tag tree t in
+
+ let trans, lstates, rstates =
+ let c = Cache.Lvl2.find cache2 (Uid.to_int states.StateSet.Node.id) tag in
+ if c == dummy then
+ let c = Ata.get_trans auto states tag in
+ Cache.Lvl2.add cache2 (Uid.to_int states.StateSet.Node.id) tag c;
+ c
+ else c
+ in
+ let s1, res1 = loop (Tree.first_child tree t) lstates ctx
+ and s2, res2 = loop (Tree.next_sibling tree t) rstates ctx in
+ l3jit_dispatch trans s1 s2 t res1 res2
+ in
+ loop root states ctx
+
+
+ let naive_top_down_run auto tree root =
+ let res, slot = naive_top_down auto tree root auto.init (Tree.closing tree root) in
+ slot.(StateSet.min_elt auto.topdown_marking_states)
- end
+ let eval_form auto s1 s2 f =
+ let rec loop f =
+ match Formula.expr f with
+ | Formula.False | Formula.True | Formula.Pred _ -> f
+ | Formula.Atom(`Left, b, q) ->
+ Formula.of_bool (b == (StateSet.mem q s1))
+ | Formula.Atom (`Right, b, q) ->
+ Formula.of_bool(b == (StateSet.mem q s2))
+ | Formula.Atom (`Epsilon, _, _) -> assert false
+
+ | Formula.Or(f1, f2) ->
+ let b1 = loop f1 in
+ let b2 = loop f2 in
+ Formula.or_pred b1 b2
+ | Formula.And(f1, f2) ->
+ let b1 = loop f1 in
+ let b2 = loop f2 in
+ Formula.and_pred b1 b2
+ in
+ loop f
+ let eval_trans auto s1 s2 trans =
+ Translist.fold
+ (fun t ((a_st, mark) as acc)->
+ let q, _, m, f = Transition.node t in
+ let form = eval_form auto s1 s2 f in
+ match Formula.expr form with
+ | Formula.True -> StateSet.add q a_st, mark || m
+ | Formula.False -> acc
+ | _ -> assert false
+ ) trans (StateSet.empty, false)
+
+
+ let set a i v =
+ LOG(__ "twopass" 2 "Setting node %i to state %a\n%!"
+ i StateSet.print v);
+ a.(i) <- v
+
+ let twopass_top_down states_array auto tree root states ctx =
+ let dummy3 = StateSet.singleton State.dummy in
+ let cache3 = Cache.Lvl3.create 512 dummy3 in
+ let dummy2 = Translist.nil, StateSet.singleton State.dummy, StateSet.singleton State.dummy in
+ let cache2 = Cache.Lvl2.create 512 dummy2 in
+ let attributes = TagSet.inj_positive (Tree.attribute_tags tree) in
+ let rec loop t states ctx =
+ if t == Tree.nil then auto.bottom_states
+ else if states == StateSet.empty then
+ let () = set states_array (Node.to_int t) auto.bottom_states in
+ auto.bottom_states
+ else
+ let tag = Tree.tag tree t in
+ LOG(__ "twopass" 2 "Traversing node %i (tag %s) in states %a\n%!" (Node.to_int t) (Tag.to_string tag)
+ StateSet.print states
+ );
+ let trans, lstates, rstates =
+ let c = Cache.Lvl2.find cache2 (Uid.to_int states.StateSet.Node.id) tag in
+ if c == dummy2 then
+ let c = Ata.get_trans ~attributes:attributes auto states tag in
+ Cache.Lvl2.add cache2 (Uid.to_int states.StateSet.Node.id) tag c;
+ c
+ else c
+ in
+ LOG(__ "twopass" 2 "\nTransitions are:\n%!");
+ LOG(__ "twopass" 2"\nTransitions are:\n%a\n%!"
+ Translist.print trans
+ );
+ let s1 = loop (Tree.first_child tree t) lstates ctx
+ and s2 = loop (Tree.next_sibling tree t) rstates ctx in
+ let st =
+ let c = Cache.Lvl3.find cache3
+ (Uid.to_int s1.StateSet.Node.id)
+ (Uid.to_int s2.StateSet.Node.id)
+ (Uid.to_int trans.Translist.Node.id)
+ in
+ if c == dummy3 then
+ let c, _ = eval_trans auto s1 s2 trans in
+ Cache.Lvl3.add cache3
+ (Uid.to_int s1.StateSet.Node.id)
+ (Uid.to_int s2.StateSet.Node.id)
+ (Uid.to_int trans.Translist.Node.id) c;c
+ else c
+ in
+ set states_array (Node.to_int t) st;
+ st
+ in
+ loop root states ctx, (dummy2, cache2)
+
+
+ type action = Nop | Mark | Dummy
+
+ let twopass_top_down_scan states_array (dummy2, cache2) auto tree root states ctx =
+ let attributes = TagSet.inj_positive (Tree.attribute_tags tree) in
+ let cache3 = Cache.Lvl3.create 512 Dummy in
+ let rec loop t states acc =
+ if states == StateSet.empty || t = Tree.nil then acc
+ else
+ let tag = Tree.tag tree t in
+ let trans, _, _ =
+ let c = Cache.Lvl2.find cache2 (Uid.to_int states.StateSet.Node.id) tag in
+ if c == dummy2 then
+ let c = Ata.get_trans ~attributes:attributes auto states tag in
+ Cache.Lvl2.add cache2 (Uid.to_int states.StateSet.Node.id) tag c;
+ c
+ else c
+ in
+ let fs = Tree.first_child tree t in
+ let ns = Tree.next_sibling tree t in
+ let s1 = if fs != Tree.nil then states_array.(Node.to_int fs) else auto.bottom_states
+ and s2 = if ns != Tree.nil then states_array.(Node.to_int ns) else auto.bottom_states
+ in
+ let mark =
+ let c = Cache.Lvl3.find cache3
+ (Uid.to_int s1.StateSet.Node.id)
+ (Uid.to_int s2.StateSet.Node.id)
+ (Uid.to_int trans.Translist.Node.id)
+ in
+ if c == Dummy then
+ let _, c = eval_trans auto s1 s2 trans in
+ let c = if c then Mark else Nop in
+ Cache.Lvl3.add cache3
+ (Uid.to_int s1.StateSet.Node.id)
+ (Uid.to_int s2.StateSet.Node.id)
+ (Uid.to_int trans.Translist.Node.id) c;c
+ else c
+ in
+ LOG(__ "twopass" 2 "Evaluating node %i (tag %s).\n%!States=%a\n%!"
+ (Node.to_int t)
+ (Tag.to_string tag)
+ StateSet.print states
+ );
+ LOG(__ "twopass" 2 "Translist=%a\nLeft=%a\nRight=%a\nMark=%s\n\n%!"
+ Translist.print trans
+ StateSet.print s1
+ StateSet.print s2
+ (match mark with
+ Dummy -> "Dummy"
+ | Mark -> "Mark"
+ | Nop -> "Nop"));
+ if mark == Mark then
+ loop ns s2 (loop fs s1 (U.NS.snoc acc t))
+ else
+ loop ns s2 (loop fs s1 acc)
+ in
+ loop root states U.NS.empty
+
+ let twopass_top_down_run auto tree root =
+ let len = Node.to_int (Tree.closing tree root) + 1 in
+ LOG(__ "twopass" 2 "Creating array of size: %i\n%!" len);
+ let states_array = Array.make len StateSet.empty in
+ let _, cache =
+ twopass_top_down states_array auto tree root auto.init Tree.nil
+ in
+ twopass_top_down_scan states_array cache auto tree root auto.init Tree.nil
+
+
+
+
+
+
+
+
+
+
+ end
projects / SXSI / xpathcomp.git / blobdiff