X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fmatita%2FmatitaExcPp.ml;h=e9e7f488f3ff731c1d9e3ff0fc496f2d9a18a56b;hb=4b07c19a0976a0928faf199c96cdf3edbfdaf0c6;hp=d58ceaf7a45c952d916b91539c26b78ddcf3e67d;hpb=ebe70c001a623e0440f21cd16dc88f585edcf0ea;p=helm.git

diff --git a/helm/matita/matitaExcPp.ml b/helm/matita/matitaExcPp.ml
index d58ceaf7a..e9e7f488f 100644
--- a/helm/matita/matitaExcPp.ml
+++ b/helm/matita/matitaExcPp.ml
@@ -61,24 +61,30 @@ let rec to_string =
      None, "Type checking error: " ^ Lazy.force msg
   | CicTypeChecker.AssertFailure msg ->
      None, "Type checking assertion failed: " ^ Lazy.force msg
-  | MatitaDisambiguator.DisambiguationError (offset,errorll) ->
-     let rec aux n =
+  | LibrarySync.AlreadyDefined s -> 
+     None, "Already defined: " ^ UriManager.string_of_uri s
+  | GrafiteDisambiguator.DisambiguationError (offset,errorll) ->
+     let rec aux n ?(dummy=false) (prev_msg,phases) =
       function
-         [] -> ""
+         [] -> [prev_msg,phases]
        | phase::tl ->
-          aux (n+1) tl ^
-           "***** Errors obtained during phase " ^ string_of_int n ^": *****\n"^
-            String.concat "\n\n"
-             (List.map (fun (floc,msg) ->
-               let loc_descr =
-                match floc with
-                   None -> ""
-                 | Some floc ->
-                    let (x, y) = HExtlib.loc_of_floc floc in
-                     sprintf " at %d-%d" (x+offset) (y+offset)
-               in
-                "*Error" ^ loc_descr ^ ": " ^ Lazy.force msg) phase) ^
-            "\n\n\n" in
+          let msg =
+           String.concat "\n\n\n"
+            (List.map (fun (floc,msg) ->
+              let loc_descr =
+               match floc with
+                  None -> ""
+                | Some floc ->
+                   let (x, y) = HExtlib.loc_of_floc floc in
+                    sprintf " at %d-%d" (x+offset) (y+offset)
+              in
+               "*Error" ^ loc_descr ^ ": " ^ Lazy.force msg) phase)
+          in
+           if msg = prev_msg then
+            aux (n+1) (msg,phases@[n]) tl
+           else
+            (if not dummy then [prev_msg,phases] else []) @
+             (aux (n+1) (msg,[n]) tl) in
      let loc =
       match errorll with
          ((Some floc,_)::_)::_ ->
@@ -90,10 +96,19 @@ let rec to_string =
            {flocb with Lexing.pos_cnum = x}, {floce with Lexing.pos_cnum = y}
           in
            Some floc
-       | _ -> None
+       | _ -> None in
+     let rec explain =
+      function
+         [] -> ""
+       | (msg,phases)::tl ->
+           explain tl ^
+           "***** Errors obtained during phase" ^
+            (if phases = [] then " " else "s ") ^
+            String.concat "," (List.map string_of_int phases) ^": *****\n"^
+            msg ^ "\n\n"
      in
       loc,
        "********** DISAMBIGUATION ERRORS: **********\n" ^
-        aux 1 errorll
+        explain (aux 1 ~dummy:true ("",[]) errorll)
   | exn -> None, "Uncaught exception: " ^ Printexc.to_string exn