exception Max_fail
(* Mapped sets for leaves *)
-let map_leaf asta = (Asta.bot_states asta, StateSet.empty)
-let empty = (StateSet.empty,StateSet.empty)
+let map_leaf asta = (Asta.bot_states_s asta, StateSet.empty)
(* Build the Oracle *)
let rec bu_oracle asta run tree tnode =
else
let tfnode = Tree.first_child tree tnode (* first child *)
and tnnode = Tree.next_sibling tree tnode in (* next-sibling *)
- let fnode,nnode =
+ let fnode,nnode = (* their preorders *)
(Tree.preorder tree tfnode, Tree.preorder tree tnnode) in
begin
bu_oracle asta run tree tfnode;
bu_oracle asta run tree tnnode;
- let q_rec n =
+ let q_rec n = (* compute the set for child/sibling *)
try NodeHash.find run n
with Not_found -> map_leaf asta in
let (_,qfr),(_,qnr) = q_rec fnode,q_rec nnode (* computed in rec call *)
and lab = Tree.tag tree tnode in
- let _,list_tr = Asta.transitions_lab asta lab in (* only take reco. *)
+ let _,list_tr = Asta.transitions_lab asta lab in (* only reco. tran.*)
let rec result set = function
| [] -> set
| (q,form) :: tl ->
- if Formula.eval_form (qfr,qnr) form
+ if Formula.eval_form (qfr,qnr) form (* evaluates the formula *)
then result (StateSet.add q set) tl
else result set tl in
let result_set = result StateSet.empty list_tr in
let rec result set = function
| [] -> set
| (q,form) :: tl ->
- if Formula.infer_form (qfq,qnq) (qfr,qnr) form
+ if Formula.infer_form (qfq,qnq) (qfr,qnr) form (* infers the formula*)
then result (StateSet.add q set) tl
else result set tl in
let _,resultr = try NodeHash.find run node
with _ -> raise Over_max_fail in
let result_set = result StateSet.empty list_tr in
+ (* we keep the old recognizing states set *)
NodeHash.replace run node (result_set, resultr)
- (* Never remove elt in Hash (the old one would appear) *)
end
and tnnode = Tree.next_sibling tree tnode in
let (fnode,nnode) =
(Tree.preorder tree tfnode, Tree.preorder tree tnnode) in
- let q_rec n =
- try NodeHash.find run n
- with Not_found -> (Asta.bot_states asta,StateSet.empty) in
- let (qf),(qn) = q_rec fnode,q_rec nnode in
- let lab = Tree.tag tree tnode in
- let list_tr,_ = Asta.transitions_lab asta lab in (* only take query. *)
- let set_node,_ = try NodeHash.find run node
- with _ -> raise Max_fail in
- let rec result = function
- | [] -> []
- | (q,form) :: tl ->
- if (Formula.infer_form qf qn form) && (StateSet.mem q set_node)
- then form :: (result tl)
- else result tl in
- let list_form = result list_tr in
- let rec add_st (ql,qr) = function
- | [] -> ql,qr
- | f :: tl -> let sql,sqr = Formula.st f in
- let ql' = StateSet.union sql ql
- and qr' = StateSet.union sqr qr in
- add_st (ql',qr') tl in
- let ql,qr = add_st (StateSet.empty, StateSet.empty) list_form in
- let qfq,qfr = try NodeHash.find run fnode
- with | _ -> map_leaf asta
- and qnq,qnr = try NodeHash.find run nnode
- with | _ -> map_leaf asta in
begin
- if Tree.is_leaf tree tfnode
- then ()
- else NodeHash.replace run fnode (StateSet.inter qfq ql,qfr);
- if Tree.is_leaf tree tnnode
- then ()
- else NodeHash.replace run nnode (StateSet.inter qnq qr,qnr);
- tp_max asta run tree tfnode;
- tp_max asta run tree tnnode;
+ if tnode == Tree.root tree (* we must intersect with top states *)
+ then let setq,_ = try NodeHash.find run node
+ with _ -> raise Max_fail in
+ NodeHash.replace run node
+ ((StateSet.inter (Asta.top_states_s asta) setq),StateSet.empty)
+ else ();
+ let q_rec n =
+ try NodeHash.find run n
+ with Not_found -> map_leaf asta in
+ let (qfq,qfr),(qnq,qnr) = q_rec fnode,q_rec nnode in
+ let lab = Tree.tag tree tnode in
+ let list_tr,_ = Asta.transitions_lab asta lab in (* only take query. *)
+ let set_node,_ = try NodeHash.find run node
+ with _ -> raise Max_fail in
+ let rec result = function
+ | [] -> []
+ | (q,form) :: tl ->
+ if (Formula.infer_form (qfq,qnq) (qfr,qnr) form) &&
+ (StateSet.mem q set_node) (* infers & trans. can start here *)
+ then form :: (result tl)
+ else result tl in
+ let list_form = result list_tr in (* tran. candidates *)
+ (* compute states occuring in transition candidates *)
+ let rec add_st (ql,qr) = function
+ | [] -> ql,qr
+ | f :: tl -> let sql,sqr = Formula.st f in
+ let ql' = StateSet.union sql ql
+ and qr' = StateSet.union sqr qr in
+ add_st (ql',qr') tl in
+ let ql,qr = add_st (StateSet.empty, StateSet.empty) list_form in
+ let qfq,qfr = try NodeHash.find run fnode
+ with | _ -> map_leaf asta
+ and qnq,qnr = try NodeHash.find run nnode
+ with | _ -> map_leaf asta in
+ begin
+ if tfnode == Tree.nil
+ then ()
+ else NodeHash.replace run fnode (StateSet.inter qfq ql,qfr);
+ if tnnode == Tree.nil
+ then ()
+ else NodeHash.replace run nnode (StateSet.inter qnq qr,qnr);
+ tp_max asta run tree tfnode;
+ tp_max asta run tree tnnode;
+ end;
end
-
+
let compute tree asta =
let flag = 2 in (* debug *)
- let size_tree = 10000 in (* todo *)
+ let size_tree = 10000 in (* todo (Tree.size ?) *)
let map = NodeHash.create size_tree in
bu_oracle asta map tree (Tree.root tree);
if flag > 0 then begin
projects / tatoo.git / blobdiff