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|
(************************************************************************)
(* v * The Coq Proof Assistant / The Coq Development Team *)
(* <O___,, * INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2013 *)
(* \VV/ **************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(************************************************************************)
module type S = sig
type cluster_id
val string_of_cluster_id : cluster_id -> string
type node
type ('edge,'info) t
val empty : ('e,'i) t
val add_edge : ('e,'i) t -> node -> 'e -> node -> ('e,'i) t
val from_node : ('e,'i) t -> node -> (node * 'e) list
val mem : ('e,'i) t -> node -> bool
val iter : ('e,'i) t ->
(node -> cluster_id option -> 'i option ->
(node * 'e) list -> unit) -> unit
val create_cluster : ('e,'i) t -> node list -> ('e,'i) t
val cluster_of : ('e,'i) t -> node -> cluster_id option
val get_info : ('e,'i) t -> node -> 'i option
val set_info : ('e,'i) t -> node -> 'i -> ('e,'i) t
val clear_info : ('e,'i) t -> node -> ('e,'i) t
end
module Make(OT : Map.OrderedType) = struct
type node = OT.t
type cluster_id = int
let string_of_cluster_id = string_of_int
module NodeMap = Map.Make(OT)
module NodeSet = Set.Make(OT)
type ('edge,'info) t = {
graph : (node * 'edge) list NodeMap.t;
clusters : cluster_id NodeMap.t;
infos : 'info NodeMap.t;
}
let empty = {
graph = NodeMap.empty;
clusters = NodeMap.empty;
infos = NodeMap.empty;
}
let mem { graph } id = NodeMap.mem id graph
let add_edge dag from trans dest = { dag with
graph =
let extra = [dest, trans] in
try NodeMap.add from (extra @ NodeMap.find from dag.graph) dag.graph
with Not_found -> NodeMap.add from extra dag.graph }
let from_node { graph } id = NodeMap.find id graph
let clid = ref 1
let create_cluster dag l=
incr clid;
{ dag with clusters =
List.fold_right (fun x clusters ->
NodeMap.add x !clid clusters) l dag.clusters }
let cluster_of dag id =
try Some (NodeMap.find id dag.clusters)
with Not_found -> None
let get_info dag id =
try Some (NodeMap.find id dag.infos)
with Not_found -> None
let set_info dag id info = { dag with infos = NodeMap.add id info dag.infos }
let clear_info dag id = { dag with infos = NodeMap.remove id dag.infos }
let iter dag f =
NodeMap.iter (fun k v -> f k (cluster_of dag k) (get_info dag k) v) dag.graph
end
|
