Implement set-theoretic operation on 2WSATA (union, intersection,

[tatoo.git] / src / ata.mli

diff --git a/src/ata.mli b/src/ata.mli
index 2676923..00070d4 100644 (file)
--- a/src/ata.mli
+++ b/src/ata.mli
@@ -68,7 +68,10 @@ module Formula :
   end
 (** Modules representing the Boolean formulae used in transitions *)
 
-module Transition : Hcons.S with type data = State.t * QNameSet.t * Formula.t
+module Transition : sig
+  include Hcons.S with type data = State.t * QNameSet.t * Formula.t
+  val print : Format.formatter -> t -> unit
+end
 (** A [Transition.t] is a hashconsed triple of the state, the set of labels and the formula *)
 
 
@@ -82,6 +85,9 @@ end
 type t
 (** 2-way Selecting Alternating Tree Automata *)
 
+val uid : t -> Uid.t
+(** return the internal unique ID of the automaton *)
+
 val get_states : t -> StateSet.t
 (** return the set of states of the automaton *)
 
@@ -92,14 +98,53 @@ val get_selecting_states : t -> StateSet.t
 (** return the set of selecting states of the automaton *)
 
 val get_trans : t -> QNameSet.elt -> StateSet.t -> TransList.t
-(** [get_trans auto l q] return the list of transitions taken by [auto]
+(** [get_trans auto l q] returns the list of transitions taken by [auto]
     for label [l] in state [q]. Takes time proportional to the number of
     transitions in the automaton.
  *)
 
+val get_form : t -> QNameSet.elt -> State.t -> Formula.t
+(** [get_form auto l q] returns a single formula for label [l] in state [q].
+    Takes time proportional to the number of transitions in the automaton.
+ *)
+
 val print : Format.formatter -> t -> unit
 (** Pretty printing of the automaton *)
 
+val copy : t -> t
+(** [copy a] creates a copy of automaton [a], that is a new automaton with
+    the same transitions but with fresh states, such that [get_states a] and
+    [get_states (copy a)] are distinct
+*)
+val concat : t -> t -> t
+(** [concat a a'] creates a new automaton [a''] such that, given a set of tree
+    nodes [N], [a'' N = a' (a N)].
+*)
+
+val merge : t -> t -> t
+(** [merge a a'] creates a new automaton [a''] that evaluates both [a] and [a'']
+    in parallel
+*)
+
+val union : t -> t -> t
+(** [union a a'] creates a new automaton [a''] that selects node
+    selected by either [a] or [a']
+*)
+
+val inter : t -> t -> t
+(** [inter a a'] creates a new automaton [a''] that selects node
+    selected by both [a] and [a']
+*)
+
+val neg : t -> t
+(** [neg a] creates a new automaton [a'] that selects the nodes not
+    selected by [a]
+*)
+
+val diff : t -> t -> t
+(** [diff a a'] creates a new automaton [a''] that select nodes selected
+    by [a] but not selected by [a']
+*)
 
 module Builder :
 sig