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
38 (** Give the list of labels and formulae from transitions for a given state *)
41 (** The empty automaton *)
44 (** Set of all labels which can occur in a tree *)
46 val new_state : unit -> state
47 (** Give a new state (different from all others states) *)
49 val add_tr : t -> transition -> unit
50 (** Add a transition to an asta *)
52 val add_reco : t -> state -> unit
53 (** Add a state to the recognizing states of an asta *)
55 val add_quer : t -> state -> unit
56 (** Add a state to the query states of an asta *)
58 val add_selec : t -> state -> unit
59 (** Add a state to the selecting states of an asta *)
61 val add_bot : t -> state -> unit
62 (** Add a state to the bottom states of an asta *)
64 val add_top : t -> state -> unit
65 (** Add a state to the top states of an asta *)
67 val init_top : t -> unit
68 (** Remove all top states *)
70 val top_states : t -> state list
71 (** Give the list of top states of an ASTA *)
73 val print : Format.formatter -> t -> unit
74 (** Describe the automaton as text *)
76 val to_file : out_channel -> t -> unit
77 (** Outputs the description of the automaton on the given out_channel *)