X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fsoftware%2Fcomponents%2Ftactics%2FcloseCoercionGraph.ml;h=2cff9c608b19816edc3d571beb92431203c1b63c;hb=58c0db9bcf83591115445a538bee028d3260fdf7;hp=898946ad64f6d89e77c0b18900644c55b0b8462c;hpb=32e29e1be132c4f9453787a194314ed57aa18538;p=helm.git

diff --git a/helm/software/components/tactics/closeCoercionGraph.ml b/helm/software/components/tactics/closeCoercionGraph.ml
index 898946ad6..2cff9c608 100644
--- a/helm/software/components/tactics/closeCoercionGraph.ml
+++ b/helm/software/components/tactics/closeCoercionGraph.ml
@@ -52,15 +52,20 @@ let get_closure_coercions src tgt uri coercions =
           coercions 
       in
         (HExtlib.flatten_map 
-          (fun (_,t,ul) -> List.map (fun u -> src,[uri; u],t) ul) c_from_tgt) @
+          (fun (_,t,ul) -> 
+             if CoercDb.eq_carr ~exact:true src t then [] else
+             List.map (fun u -> src,[uri; u],t) ul) c_from_tgt) @
         (HExtlib.flatten_map 
-          (fun (s,_,ul) -> List.map (fun u -> s,[u; uri],tgt) ul) c_to_src) @
+          (fun (s,_,ul) -> 
+             if CoercDb.eq_carr ~exact:true s tgt then [] else
+             List.map (fun u -> s,[u; uri],tgt) ul) c_to_src) @
         (HExtlib.flatten_map 
           (fun (s,_,u1l) ->
             HExtlib.flatten_map 
               (fun (_,t,u2l) ->
                 HExtlib.flatten_map
                   (fun u1 ->
+                    if CoercDb.eq_carr ~exact:true s t then [] else
                     List.map 
                       (fun u2 -> (s,[u1;uri;u2],t)) 
                       u2l)
@@ -316,8 +321,8 @@ let number_if_already_defined buri name l =
     if List.exists (UriManager.eq uri) l then retry ()
     else
       try
-        let _  = Http_getter.resolve' ~writable:true uri in
-        if Http_getter.exists' uri then retry () else uri
+        let _  = Http_getter.resolve' ~local:true ~writable:true uri in
+        if Http_getter.exists' ~local:true uri then retry () else uri
       with 
       | Http_getter_types.Key_not_found _ -> uri
       | Http_getter_types.Unresolvable_URI _ -> assert false
@@ -357,8 +362,7 @@ let close_coercion_graph src tgt uri baseuri =
                             [] [] univ arity true
                         in
                         if (menv = []) then
-                          prerr_endline 
-                            "MENV non empty after composing coercions";
+                          HLog.warn "MENV non empty after composing coercions";
                         build_obj t univ arity
                     | _ -> assert false 
                   ) (first_step, CicUniv.empty_ugraph) tl