X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Focaml%2Fcic_unification%2FcicMetaSubst.mli;h=890a347b006b879660f9908569c5a0a2de7c83f1;hb=1276d3c7b85f4edc049a5d68a6120816fe64c806;hp=9a0bee6ae842d2c551778843bf809ce857a422a6;hpb=1592bfa20a80f2f58fe0593c019689cb32072db6;p=helm.git

diff --git a/helm/ocaml/cic_unification/cicMetaSubst.mli b/helm/ocaml/cic_unification/cicMetaSubst.mli
index 9a0bee6ae..890a347b0 100644
--- a/helm/ocaml/cic_unification/cicMetaSubst.mli
+++ b/helm/ocaml/cic_unification/cicMetaSubst.mli
@@ -23,9 +23,10 @@
  * http://helm.cs.unibo.it/
  *)
 
-exception MetaSubstFailure of string
-exception Uncertain of string
-exception AssertFailure of string
+exception MetaSubstFailure of string Lazy.t
+exception Uncertain of string Lazy.t
+exception AssertFailure of string Lazy.t
+exception DeliftingARelWouldCaptureAFreeVariable;;
 
 (* The entry (i,t) in a substitution means that *)
 (* (META i) have been instantiated with t.      *)
@@ -50,6 +51,14 @@ val delift :
 val restrict :
   Cic.substitution -> (int * int) list -> Cic.metasenv -> 
   Cic.metasenv * Cic.substitution 
+
+(** delifts the Rels in t of n
+ *  @raise DeliftingARelWouldCaptureAFreeVariable
+ *)
+val delift_rels :
+ Cic.substitution -> Cic.metasenv -> int -> Cic.term ->
+  Cic.term * Cic.substitution * Cic.metasenv
+ 
 (** {2 Pretty printers} *)
 
 val ppsubst_unfolded: Cic.substitution -> string
@@ -58,7 +67,7 @@ val ppterm: Cic.substitution -> Cic.term -> string
 val ppcontext: ?sep: string -> Cic.substitution -> Cic.context -> string
 val ppterm_in_context:
  Cic.substitution -> Cic.term -> (Cic.name option) list -> string
-val ppmetasenv: ?sep: string -> Cic.metasenv -> Cic.substitution -> string
+val ppmetasenv: ?sep: string -> Cic.substitution -> Cic.metasenv -> string
 
 (** {2 Format-like pretty printers}
  * As above with prototypes suitable for toplevel/ocamldebug printers. No