Cic2acic : added some debugging information

[helm.git] / components / cic_acic / cic2acic.ml

diff --git a/components/cic_acic/cic2acic.ml b/components/cic_acic/cic2acic.ml
index 98b14298274542288534df848c3bedf4303fa78d..89d3d00b410b10c92495716812a8b12cf2423ef9 100644 (file)
--- a/components/cic_acic/cic2acic.ml
+++ b/components/cic_acic/cic2acic.ml
@@ -82,16 +82,16 @@ let fresh_id seed ids_to_terms ids_to_father_ids =
 
 let source_id_of_id id = "#source#" ^ id;;
 
-exception NotEnoughElements;;
+exception NotEnoughElements of string;;
 
 (*CSC: cut&paste da cicPp.ml *)
 (* get_nth l n   returns the nth element of the list l if it exists or *)
 (* raises NotEnoughElements if l has less than n elements             *)
-let rec get_nth l n =
+let rec get_nth msg l n =
  match (n,l) with
     (1, he::_) -> he
-  | (n, he::tail) when n > 1 -> get_nth tail (n-1)
-  | (_,_) -> raise NotEnoughElements
+  | (n, he::tail) when n > 1 -> get_nth msg tail (n-1)
+  | (_,_) -> raise (NotEnoughElements msg)
 ;;
 
 
@@ -224,7 +224,7 @@ let acic_of_cic_context' ~computeinnertypes:global_computeinnertypes
          match tt with
             C.Rel n ->
              let id =
-              match get_nth context n with
+              match get_nth "1" context n with
                  (Some (C.Name s,_)) -> s
                | _ -> "__" ^ string_of_int n
              in
@@ -643,7 +643,7 @@ let plain_acic_term_of_cic_term =
   match t with
      C.Rel n ->
       let idref,id =
-       match get_nth context n with
+       match get_nth "2" context n with
           idref,(Some (C.Name s,_)) -> idref,s
         | idref,_ -> idref,"__" ^ string_of_int n
       in