X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fsoftware%2Flambda-delta%2Fcommon%2Fentity.ml;h=3aa1ef6b59cfb086430cd408d734d64ccc36898b;hb=f00757144b2cd7e6457fed55dbc1309d11a542dc;hp=4a16c77e73c68dcf849637c35c8eb669442d9e21;hpb=ece36f3adcdf55739b4686168b49506439bff2ba;p=helm.git

diff --git a/helm/software/lambda-delta/common/entity.ml b/helm/software/lambda-delta/common/entity.ml
index 4a16c77e7..3aa1ef6b5 100644
--- a/helm/software/lambda-delta/common/entity.ml
+++ b/helm/software/lambda-delta/common/entity.ml
@@ -33,6 +33,27 @@ let rec name err f = function
    | _ :: tl          -> name err f tl
    | []               -> err ()
 
+let names f map l a =
+   let rec aux f i a = function   
+      | []                -> f a
+      | Name (n, r) :: tl -> aux (map f i n r) false a tl
+      | _ :: tl           -> aux f i a tl
+   in
+   aux f true a l
+
+let rec get_name err f j = function
+   | []                          -> err ()
+   | Name (n, r) :: _ when j = 0 -> f n r
+   | Name _ :: tl                -> get_name err f (pred j) tl
+   | _ :: tl                     -> get_name err f j tl
+
+let rec get_names f = function
+   | []                -> f [] []
+   | Name _ as n :: tl ->
+      let f a ns = f a (n :: ns) in get_names f tl
+   | e :: tl           ->
+      let f a = f (e :: a) in get_names f tl
+
 let rec apix err f = function
    | Apix i :: _ -> f i
    | _ :: tl     -> apix err f tl