(* The automaton to be run *)
status : NodeStatus.t array;
(* A mapping from node preorders to NodeStatus *)
- unstable : Bitvector.t;
- (* A bitvector remembering whether a subtree is stable *)
mutable redo : bool;
(* A boolean indicating whether the run is incomplete *)
mutable pass : int;
tree = tree;
auto = auto;
status = Array.create len dummy_status;
- unstable = Bitvector.create ~init:true len;
redo = true;
pass = 0;
cache2 = Cache.N2.create dummy_form;
let status = run.status in
let cache2 = run.cache2 in
let cache5 = run.cache5 in
- let unstable = run.unstable in
let states_by_rank = Ata.get_states_by_rank auto in
let td_todo = states_by_rank.(i) in
let bu_todo = if i + 1 = Array.length states_by_rank then StateSet.empty
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
+ if node != T.nil then 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_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.NodeStatus.node.rank < i then
}
else c
in
- IFTRACE(html tree node _i status0 "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
if status0.NodeStatus.node.todo == StateSet.empty then status0
else begin
let status1 = eval_trans auto cache2 cache5 tag fcs nss ps status0 in
- IFTRACE(html tree node _i status1 "Updating transitions");
(* update the cache if the status of the node changed *)
if status1 != status0 then status.(node_id) <- status1;
status1
end
in
(* recursively traverse the first child *)
- let unstable_left = loop fc in
+ let () = 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
if status1.NodeStatus.node.todo == StateSet.empty then status1
else begin
let status2 = eval_trans auto cache2 cache5 tag fcs1 nss ps status1 in
- IFTRACE(html tree node _i status2
- "Updating transitions (after first-child)");
if status2 != status1 then status.(node_id) <- status2;
status2
end
in
- let unstable_right = loop ns in
+ let () = loop ns in
let nss1 = unsafe_get_status status ns_id in
- let status3 =
- if status2.NodeStatus.node.todo == StateSet.empty then status2
- else begin
- let status3 = eval_trans auto cache2 cache5 tag fcs1 nss1 ps status2 in
- IFTRACE(html tree node _i status3
- "Updating transitions (after next-sibling)");
- if status3 != status2 then status.(node_id) <- status3;
- status3
- end
- in
- 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;
- IFTRACE((if not unstable_self then
- Html.finalize_node
- node_id
- _i
- Ata.(StateSet.intersect status3.NodeStatus.node.sat
- (get_selecting_states auto))));
- unstable_self
+ if status2.NodeStatus.node.todo != StateSet.empty then
+ let status3 = eval_trans auto cache2 cache5 tag fcs1 nss1 ps status2 in
+ if status3 != status2 then status.(node_id) <- status3
end
in
- run.redo <- loop (T.root tree);
- run.pass <- run.pass + 1
+ loop (T.root tree)
let get_results run =
let cache = run.status in
let auto = run.auto in
let tree = run.tree in
+ let sel_states = Ata.get_selecting_states auto in
let rec loop node acc =
if node == T.nil then acc
else
let acc0 = loop (T.next_sibling tree node) acc in
let acc1 = loop (T.first_child tree node) acc0 in
- if Ata.(
- StateSet.intersect
- cache.(T.preorder tree node).NodeStatus.node.sat
- (get_selecting_states auto)) then node::acc1
+ if StateSet.intersect
+ cache.(T.preorder tree node).NodeStatus.node.sat
+ sel_states then node::acc1
else acc1
in
loop (T.root tree) []
let run = make auto tree in
prepare_run run nodes;
for i = 0 to Ata.get_max_rank auto do
- top_down run
+ top_down run;
+ run.pass <- run.pass + 1
done;
pass := Ata.get_max_rank auto + 1;
IFTRACE(Html.gen_trace auto (module T : Tree.S with type t = T.t) tree);