- let unsafe_get_status a i =
- if i < 0 then dummy_status else Array.unsafe_get a i
-
-IFDEF HTMLTRACE
- THEN
-DEFINE TRACE(e) = (e)
- ELSE
-DEFINE TRACE(e) = ()
-END
-
- let html tree node i config msg =
- let config = config.NodeStatus.node in
- Html.trace (T.preorder tree node) i
- "node: %i<br/>%s<br/>sat: %a<br/>todo: %a<br/>round: %i<br/>"
- (T.preorder tree node)
- msg
- StateSet.print config.sat
- StateSet.print config.todo
- i
-
-
- let debug msg tree node i config =
- let config = config.NodeStatus.node in
- eprintf
- "DEBUG:%s node: %i\nsat: %a\ntodo: %a\nround: %i\n"
- msg
- (T.preorder tree node)
- StateSet.print config.sat
- StateSet.print config.todo
- i
-
- let get_form cache2 auto tag q =
- let phi =
- Cache.N2.find cache2 (tag.QName.id :> int) (q :> int)
- in
- if phi == dummy_form then
- let phi = Ata.get_form auto tag q in
- let () =
- Cache.N2.add
- cache2
- (tag.QName.id :> int)
- (q :> int) phi
- in phi
- else phi
-
- type trivalent = False | True | Unknown
- let of_bool = function false -> False | true -> True
- let or_ t1 t2 =
- match t1 with
- False -> t2
- | True -> True
- | Unknown -> if t2 == True then True else Unknown
-
- let and_ t1 t2 =
- match t1 with
- False -> False
- | True -> t2
- | Unknown -> if t2 == False then False else Unknown
-
- (* Define as macros to get lazyness *)
-DEFINE OR_(t1,t2) =
- let __t1 = (t1) in
- match t1 with
- False -> (t2)
- | True -> True
- | Unknown -> if (t2) == True then True else Unknown
-
-DEFINE AND_(t1,t2) =
- let __t1 = (t1) in
- match t1 with
- False -> False
- | True -> (t2)
- | Unknown -> if (t2) == False then False else Unknown
-
-
- let eval_form phi fcs nss ps ss summary =
- let open Ata in
- let rec loop phi =
- begin match Formula.expr phi with
- | Boolean.False -> False
- | Boolean.True -> True
- | Boolean.Atom (a, b) ->
- begin
- let open NodeSummary in
- match a.Atom.node with
- | Move (m, q) ->
- let { NodeStatus.node = n_sum; _ } as sum =
- match m with
- `First_child -> fcs
- | `Next_sibling -> nss
- | `Parent | `Previous_sibling -> ps
- | `Stay -> ss
- in
- if sum == dummy_status || StateSet.mem q n_sum.todo then
- Unknown
- else
- of_bool (b == StateSet.mem q n_sum.sat)
- | Is_first_child -> of_bool (b == is_left summary)
- | Is_next_sibling -> of_bool (b == is_right summary)
- | Is k -> of_bool (b == (k == kind summary))
- | Has_first_child -> of_bool (b == has_left summary)
- | Has_next_sibling -> of_bool (b == has_right summary)
- end
- | Boolean.And(phi1, phi2) -> AND_ (loop phi1, loop phi2)
- | Boolean.Or (phi1, phi2) -> OR_ (loop phi1, loop phi2)
- end
- in
- loop phi
-
-
- let eval_trans_aux auto cache2 tag fcs nss ps old_status =
- let { sat = old_sat;
- todo = old_todo;
- summary = old_summary } as os_node = old_status.NodeStatus.node
- in
- let sat, todo =
- StateSet.fold (fun q ((a_sat, a_todo) as acc) ->
- let phi =
- get_form cache2 auto tag q
- in
- let v = eval_form phi fcs nss ps old_status old_summary in
- match v with
- True -> StateSet.add q a_sat, a_todo
- | False -> acc
- | Unknown -> a_sat, StateSet.add q a_todo
- ) old_todo (old_sat, StateSet.empty)
- in
- if old_sat != sat || old_todo != todo then
- NodeStatus.make { os_node with sat; todo }
- else old_status
-
-
- let eval_trans auto cache2 cache5 tag fcs nss ps ss =
- let rec loop old_status =
- let new_status =
- eval_trans_aux auto cache2 tag fcs nss ps old_status
- in
- if new_status == old_status then old_status else loop new_status
- in
- let fcsid = (fcs.NodeStatus.id :> int) in
- let nssid = (nss.NodeStatus.id :> int) in
- let psid = (ps.NodeStatus.id :> int) in
- let ssid = (ss.NodeStatus.id :> int) in
- let tagid = (tag.QName.id :> int) in
- let res = Cache.N5.find cache5 tagid ssid fcsid nssid psid in
- if res != dummy_status then res
- else let new_status = loop ss in
- Cache.N5.add cache5 tagid ssid fcsid nssid psid new_status;
- new_status
-
-
-
- let top_down run =
- let tree = run.tree in
- let auto = run.auto in
- let status = run.status in
- let cache2 = run.cache2 in
- let cache5 = run.cache5 in
- let unstable = run.unstable in
- let rec loop node =
- let node_id = T.preorder tree node in
- if node == T.nil || not (Bitvector.get unstable node_id) then false else begin
- let parent = T.parent tree node in
- let fc = T.first_child tree node in
- let fc_id = T.preorder tree fc in
- let ns = T.next_sibling tree node in
- let ns_id = T.preorder tree ns in
- let tag = T.tag tree node in
- (* We enter the node from its parent *)
-
- let status0 =
- let c = unsafe_get_status status node_id in
- if c == dummy_status then
- (* first time we visit the node *)
- NodeStatus.make
- { sat = StateSet.empty;
- todo = StateSet.diff
- (Ata.get_states auto)
- (Ata.get_starting_states auto);
- summary = NodeSummary.make
- (node == T.first_child tree parent) (* is_left *)
- (node == T.next_sibling tree parent) (* is_right *)
- (fc != T.nil) (* has_left *)
- (ns != T.nil) (* has_right *)
- (T.kind tree node) (* kind *)
- }
- else c
- in
- TRACE(html tree node _i config0 "Entering node");
-
- (* get the node_statuses for the first child, next sibling and parent *)
- let ps = unsafe_get_status status (T.preorder tree parent) in
- let fcs = unsafe_get_status status fc_id in
- let nss = unsafe_get_status status ns_id in
- (* evaluate the transitions with all this statuses *)
- let status1 = eval_trans auto cache2 cache5 tag fcs nss ps status0 in
- TRACE(html tree node _i config1 "Updating transitions");
-
- (* update the cache if the status of the node changed *)
-
- if status1 != status0 then status.(node_id) <- status1;
- (* recursively traverse the first child *)
- let unstable_left = loop fc in
- (* here we re-enter the node from its first child,
- get the new status of the first child *)
- let fcs1 = unsafe_get_status status fc_id in
- (* update the status *)
- let status2 = eval_trans auto cache2 cache5 tag fcs1 nss ps status1 in
-
- TRACE(html tree node _i config2 "Updating transitions (after first-child)");
-
- if status2 != status1 then status.(node_id) <- status2;
- let unstable_right = loop ns in
- let nss1 = unsafe_get_status status ns_id in
- let status3 = eval_trans auto cache2 cache5 tag fcs1 nss1 ps status2 in
-
- TRACE(html tree node _i config3 "Updating transitions (after next-sibling)");
-
- if status3 != status2 then status.(node_id) <- status3;
-
- let unstable_self =
- (* if either our left or right child is unstable or if we still have transitions
- pending, the current node is unstable *)
- unstable_left
- || unstable_right
- || StateSet.empty != status3.NodeStatus.node.todo
- in
- Bitvector.unsafe_set unstable node_id unstable_self;
- TRACE((if not unstable_self then
- Html.finalize_node
- node_id
- _i
- Ata.(StateSet.intersect config3.Config.node.sat auto.selection_states)));
- unstable_self
- end
- in
- run.redo <- loop (T.root tree);
- run.pass <- run.pass + 1
-
-(*
- let stats run =
- let count = ref 0 in
- let len = Bitvector.length run.unstable in
- for i = 0 to len - 1 do
- if not (Bitvector.unsafe_get run.unstable i) then
- incr count
- done;
- Logger.msg `STATS
- "%i nodes over %i were skipped in iteration %i (%.2f %%), redo is: %b"
- !count len run.pass (100. *. (float !count /. float len))
- run.redo
-
-
- let eval auto tree node =
- let len = T.size tree in
- let run = { config = Array.create len Ata.dummy_config;
- unstable = Bitvector.create ~init:true len;
- redo = true;
- pass = 0
- }