1 (***********************************************************************)
8 (* Copyright 2010-2012 Université Paris-Sud and Centre National de la *)
9 (* Recherche Scientifique. All rights reserved. This file is *)
10 (* distributed under the terms of the GNU Lesser General Public *)
11 (* License, with the special exception on linking described in file *)
14 (***********************************************************************)
16 (** Implementation of alternating selecting tree automata (ASTA) *)
20 (** The type of states *)
22 type label = QNameSet.t
23 (** The type of labels of the transitions *)
25 type formula = Formula.t
26 (** The type of transition formulae *)
28 type transition = (state*label*formula)
29 (** The type of transitions *)
32 (** The type of ASTAs *)
34 val transition : t -> state -> label -> formula
35 (** Give the formula which must hold for a current state and label *)
37 val transitions : t -> state -> ((label*formula) list)*((label*formula) list)
38 (** Give the list of labels and formulae from queries and recognizing
39 transitions for a given state *)
42 (** The empty automaton *)
45 (** Set of all labels which can occur in a tree *)
47 val new_state : unit -> state
48 (** Give a new state (different from all others states) *)
50 val add_tr : t -> transition -> bool -> unit
51 (** Add a query transition (recognizing transition if flag=false) to an asta *)
53 val add_reco : t -> state -> unit
54 (** Add a state to the recognizing states of an asta *)
56 val add_quer : t -> state -> unit
57 (** Add a state to the query states of an asta *)
59 val add_selec : t -> state -> unit
60 (** Add a state to the selecting states of an asta *)
62 val add_bot : t -> state -> unit
63 (** Add a state to the bottom states of an asta *)
65 val add_top : t -> state -> unit
66 (** Add a state to the top states of an asta *)
68 val init_top : t -> unit
69 (** Remove all top states *)
71 val top_states : t -> state list
72 (** Give the list of top states of an ASTA *)
74 val print : Format.formatter -> t -> unit
77 val to_file : out_channel -> t -> unit
78 (** Outputs the description of the automaton on the given out_channel *)