- new semantic log system

[helm.git] / helm / software / lambda-delta / basic_rg / brg.ml

diff --git a/helm/software/lambda-delta/basic_rg/brg.ml b/helm/software/lambda-delta/basic_rg/brg.ml
index 36e4fefe811adb1228d84443c76b4302fb1b17ac..e9897c08a942f74880b7633fe9b4d893b93716be 100644 (file)
--- a/helm/software/lambda-delta/basic_rg/brg.ml
+++ b/helm/software/lambda-delta/basic_rg/brg.ml
@@ -12,16 +12,18 @@
 type uri = NUri.uri
 type id = Aut.id
 
-type bind = Abst | Abbr (* abstraction, abbreviation *)
+type bind = Void         (* exclusion *)
+          | Abst of term (* abstraction *)
+          | Abbr of term (* abbreviation *)
 
-type term = Sort of int                     (* hierarchy index *)
-          | LRef of int                     (* reverse de Bruijn index *)
-         | GRef of uri                     (* reference *)
-         | Cast of term * term             (* type, term *)
-         | Appl of term * term             (* argument, function *)
-         | Bind of id * bind * term * term (* name, binder, content, scope *)
+and term = Sort of int              (* hierarchy index *)
+         | LRef of int              (* reverse de Bruijn index *)
+         | GRef of uri              (* reference *)
+         | Cast of term * term      (* type, term *)
+         | Appl of term * term      (* argument, function *)
+         | Bind of id * bind * term (* name, binder, scope *)
 
-type obj = int * uri * bind * term (* age, uri, binder, contents *)
+type obj = int * uri * bind (* age, uri, binder, contents *)
 
 type item = obj option
 
@@ -29,8 +31,12 @@ type hierarchy = int -> int
 
 (* Currified constructors ***************************************************)
 
+let abst w = Abst w
+
+let abbr v = Abbr v
+
 let cast u t = Cast (u, t)
 
 let appl u t = Appl (u, t)
 
-let bind id b u t = Bind (id, b, u, t)
+let bind id b t = Bind (id, b, t)