X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fsoftware%2Fcomponents%2Fcontent_pres%2FtermContentPres.ml;h=0f51e36a9acf9fb2241017a0a12580bdccb5a72d;hb=8f2b388ed93eca7de9a9fe70eaf2e0ab2588e6b7;hp=110c78e46e43820fc4ae280e80090f9b35c40544;hpb=e615e0be01363fb511e06fe1752f2869518e83d7;p=helm.git

diff --git a/helm/software/components/content_pres/termContentPres.ml b/helm/software/components/content_pres/termContentPres.ml
index 110c78e46..0f51e36a9 100644
--- a/helm/software/components/content_pres/termContentPres.ml
+++ b/helm/software/components/content_pres/termContentPres.ml
@@ -151,8 +151,11 @@ let pp_ast0 t k =
            space
          ]
         in
-        let mk_case_pattern (head, href, vars) =
-          hbox true false (ident_w_href href head :: List.map aux_var vars)
+        let mk_case_pattern =
+         function
+            Ast.Pattern (head, href, vars) ->
+             hbox true false (ident_w_href href head :: List.map aux_var vars)
+          | Ast.Wildcard -> builtin_symbol "_"
         in
         let patterns' =
           List.map
@@ -201,7 +204,8 @@ let pp_ast0 t k =
             hvbox false true [
               keyword "let"; space;
               hvbox false true [
-                aux_var var; space; builtin_symbol "\\def"; break; top_pos (k s) ];
+                aux_var var; space;
+                builtin_symbol "\\def"; break; top_pos (k s) ];
               break; space; keyword "in" ];
             break;
             k t ])
@@ -465,8 +469,9 @@ let fill_pos_info l1_pattern = l1_pattern
   in
   aux true l1_pattern *)
 
+let counter = ref ~-1 
+let reset () = counter := ~-1;;
 let fresh_id =
-  let counter = ref ~-1 in
   fun () ->
     incr counter;
     !counter
@@ -546,8 +551,8 @@ let instantiate_level2 env term =
     | Ast.Case (term, indty, outty_opt, patterns) ->
         Ast.Case (aux env term, indty, aux_opt env outty_opt,
           List.map (aux_branch env) patterns)
-    | Ast.LetIn (var, t1, t2) ->
-        Ast.LetIn (aux_capture_var env var, aux env t1, aux env t2)
+    | Ast.LetIn (var, t1, t3) ->
+        Ast.LetIn (aux_capture_var env var, aux env t1, aux env t3)
     | Ast.LetRec (kind, definitions, body) ->
         Ast.LetRec (kind, List.map (aux_definition env) definitions,
           aux env body)
@@ -575,8 +580,11 @@ let instantiate_level2 env term =
   and aux_capture_var env (name, ty_opt) = (aux env name, aux_opt env ty_opt)
   and aux_branch env (pattern, term) =
     (aux_pattern env pattern, aux env term)
-  and aux_pattern env (head, hrefs, vars) =
-    (head, hrefs, List.map (aux_capture_var env) vars)
+  and aux_pattern env =
+   function
+      Ast.Pattern (head, hrefs, vars) ->
+       Ast.Pattern (head, hrefs, List.map (aux_capture_var env) vars)
+    | Ast.Wildcard -> Ast.Wildcard
   and aux_definition env (params, var, term, i) =
     (List.map (aux_capture_var env) params, aux_capture_var env var, aux env term, i)
   and aux_substs env substs =
@@ -666,3 +674,5 @@ let instantiate_level2 env term =
 
 let _ = load_patterns21 []
 
+
+