X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=components%2Fmetadata%2FmetadataDeps.ml;h=f2b1d049644cb72e589e5f86a6a8d4e2c9c74c80;hb=fae6f153d6dad76b6ccfce17a6b3d997db338d2e;hp=c6dcd1e9062e74eb4d2d000edea89f816ae94713;hpb=e0084c5ce13f5a2ab9622adbcaa5b3b41202d17e;p=helm.git

diff --git a/components/metadata/metadataDeps.ml b/components/metadata/metadataDeps.ml
index c6dcd1e90..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
@@ -98,7 +108,10 @@ struct
   let fat_value = 20
   let fat_increment = fat_value
   let incomplete_attrs = ["style", "dashed"]
-  let global_node_attrs = ["fontsize", "9"; "width", ".4"; "height", ".4"]
+  let global_node_attrs = ["fontsize", "12"; "width", ".4"; "height", ".4"]
+
+  let label_of_uri uri = UriManager.name_of_uri uri
+  (*let label_of_uri uri = UriManager.string_of_uri uri*)
 
   type neighborhood =
     { adjacency: UriManager.uri list lazy_t;  (* all outgoing edges *)
@@ -129,7 +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
         | [] -> ()
@@ -137,7 +150,7 @@ struct
             let suri = UriManager.string_of_uri uri in
             Pp.node suri
               ~attrs:([ "href", UriManager.string_of_uri uri;
-                       (*"label", UriManager.name_of_uri uri*)
+                        "label", label_of_uri uri
                 ] @ (if is_complete uri then [] else incomplete_attrs))
               fmt;
             let new_nodes = ref [] in
@@ -188,25 +201,33 @@ struct
           adjacency;
         neighbs.shown <- weight;
         fst (HExtlib.split_nth weight adjacency), weight
-      else  (* nodes has been expanded at least once *)
+      else begin  (* nodes has been expanded at least once *)
         let adjacency = Lazy.force neighbs.adjacency in
         let total_nodes = List.length adjacency in
         if neighbs.shown < total_nodes then begin
           (* some more children to show ... *)
           let shown_before = neighbs.shown in
           neighbs.shown <- min (neighbs.shown + fat_increment) total_nodes;
-          let new_shown = shown_before - neighbs.shown in
+          let new_shown = neighbs.shown - shown_before in
           (fst (HExtlib.split_nth new_shown (List.rev adjacency))), new_shown
         end else
           [], 0 (* all children are already shown *)
+      end
     with Not_found ->
       (*eprintf "uri not found: %s\n%!" (UriManager.string_of_uri uri);*)
       [], 0
 
   let collapse uri (adjlist, _root, f, _invert) =
+    try
+      let neighbs = UriTbl.find adjlist uri in
+      if Lazy.lazy_is_val neighbs.adjacency then
+        (* do not collapse already collapsed nodes *)
+        if Lazy.force neighbs.adjacency <> [] then
+          (* do not collapse nodes with no outgoing edges *)
+          UriTbl.replace adjlist uri { adjacency = lazy (f uri); shown = 0 }
+    with Not_found ->
       (* do not add a collapsed node if it was not part of the graph *)
-    if UriTbl.mem adjlist uri then
-      UriTbl.replace adjlist uri { adjacency = lazy (f uri); shown = 0 }
+      ()
 
   let graph_of_fun ?(invert = false) f ~dbd uri =
     let f ~dbd uri =