X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=components%2Fmetadata%2FmetadataDeps.ml;h=f2b1d049644cb72e589e5f86a6a8d4e2c9c74c80;hb=fdb2b6f3e8f7fdcebd97b5da7e83f530a07cb973;hp=b393dbb91a8f0f0a3ca74983758e386c02738c3a;hpb=2499f5fdcf4dbfecc6f4fafe925b24ae76f14be8;p=helm.git

diff --git a/components/metadata/metadataDeps.ml b/components/metadata/metadataDeps.ml
index b393dbb91..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