X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=components%2Fmetadata%2FmetadataDeps.ml;h=f2b1d049644cb72e589e5f86a6a8d4e2c9c74c80;hb=ad17757edcc6cf75be576268fab8cf52751d679a;hp=91fa8004ca14ae49694c98209a751ffb765d2f2b;hpb=a08493538b6e678fd812356dd6965aa31bf1f769;p=helm.git

diff --git a/components/metadata/metadataDeps.ml b/components/metadata/metadataDeps.ml
index 91fa8004c..f2b1d0496 100644
--- a/components/metadata/metadataDeps.ml
+++ b/components/metadata/metadataDeps.ml
@@ -91,6 +91,16 @@ let inverse_deps ~dbd uri =
   do_query (MetadataTypes.obj_tbl ())
     @ do_query MetadataTypes.library_obj_tbl
 
+let topological_sort ~dbd uris =
+ let module OrderedUri =
+  struct
+   type t = UriManager.uri
+   let compare = UriManager.compare
+  end in
+ let module Topo = HTopoSort.Make(OrderedUri) in
+  Topo.topological_sort uris
+   (fun uri -> fst (List.split (direct_deps ~dbd uri)))
+
 module DepGraph =
 struct
   module UriTbl = UriManager.UriHashtbl
@@ -132,7 +142,7 @@ struct
         (*eprintf "Node '%s' not found.\n" (UriManager.string_of_uri uri);*)
         assert false
     in
-    Pp.header ~graph_attrs:["rankdir", "LR"] ~node_attrs:global_node_attrs fmt;
+    Pp.header ~graph_type:"strict digraph" ~graph_attrs:["rankdir", "LR"] ~node_attrs:global_node_attrs fmt;
     let rec aux =
       function
         | [] -> ()