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(************************************************************************)
(* v * The Coq Proof Assistant / The Coq Development Team *)
(* <O___,, * INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2012 *)
(* \VV/ **************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(************************************************************************)
(** Generic functorized trie data structure. *)
module type S =
sig
(** A trie is a generalization of the map data structure where the keys are
themselves lists. *)
type label
(** Keys of the trie structure are [label list]. *)
type data
(** Data on nodes of tries are finite sets of [data]. *)
type t
(** The trie data structure. Essentially a finite map with keys [label list]
and content [data Set.t]. *)
val empty : t
(** The empty trie. *)
val get : t -> data list
(** Get the data at the current node. *)
val next : t -> label -> t
(** [next t lbl] returns the subtrie of [t] pointed by [lbl].
@raise Not_found if there is none. *)
val labels : t -> label list
(** Get the list of defined labels at the current node. *)
val add : label list -> data -> t -> t
(** [add t path v] adds [v] at path [path] in [t]. *)
val remove : label list -> data -> t -> t
(** [remove t path v] removes [v] from path [path] in [t]. *)
val iter : (label list -> data -> unit) -> t -> unit
(** Apply a function to all contents. *)
end
module Make (Label : Set.OrderedType) (Data : Set.OrderedType) : S
with type label = Label.t and type data = Data.t
(** Generating functor, for a given type of labels and data. *)
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