1 files changed, 38 insertions, 0 deletions
diff --git a/lib/dag.mli b/lib/dag.mli
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@@ -0,0 +1,38 @@
+(************************************************************************)
+(*  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
+  (* raise Not_found if the node is not there *)
+  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) : S with type node = OT.t
+