- alpha conversion check added to the brg kernel (succeeds 1/4 of the times)

[helm.git] / helm / software / lambda-delta / lib / cps.ml

diff --git a/helm/software/lambda-delta/lib/cps.ml b/helm/software/lambda-delta/lib/cps.ml
index b61fccfa47f148553394d83fb26a5bb369002efc..75f8bcd37fa330c9ba8ddf1f2a2ad494a9a9b96b 100644 (file)
--- a/helm/software/lambda-delta/lib/cps.ml
+++ b/helm/software/lambda-delta/lib/cps.ml
@@ -9,6 +9,8 @@
      \ /   This software is distributed as is, NO WARRANTY.              
       V_______________________________________________________________ *)
 
+let err () = assert false
+
 let start x = x
 
 let id f x = f x
@@ -60,6 +62,11 @@ let list_iter f map l =
 let rec list_fold_left2 f map a l1 l2 = match l1, l2 with
    | [], []                 -> f a
    | hd1 :: tl1, hd2 :: tl2 -> 
-      let f a = if a = None then f a else list_fold_left2 f map a tl1 tl2 in
+      let f a = list_fold_left2 f map a tl1 tl2 in
       map f a hd1 hd2
-   | _                      -> f None
+   | _                      -> assert false
+
+let rec list_mem ?(eq=(=)) a = function
+   | []                   -> false
+   | hd :: _ when eq a hd -> true
+   | _ :: tl              -> list_mem ~eq a tl