X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Focaml%2Fcic_unification%2FcicMetaSubst.mli;h=6ebd5a5b9e7ec788dd37eac817ef85503f2aa0cf;hb=fd648e40eb2c9c5b29cfa4408459511a74898d1d;hp=546a71deacce2cc44b7ef50d4815a00da8086f79;hpb=9945374a5594c068883fa6c775f17b640fcac64d;p=helm.git

diff --git a/helm/ocaml/cic_unification/cicMetaSubst.mli b/helm/ocaml/cic_unification/cicMetaSubst.mli
index 546a71dea..6ebd5a5b9 100644
--- a/helm/ocaml/cic_unification/cicMetaSubst.mli
+++ b/helm/ocaml/cic_unification/cicMetaSubst.mli
@@ -27,9 +27,14 @@ exception MetaSubstFailure of string
 exception Uncertain of string
 exception AssertFailure of string
 
+exception SubstNotFound of int
+
 (* The entry (i,t) in a substitution means that *)
 (* (META i) have been instantiated with t.      *)
-type substitution = (int * Cic.term) list
+type substitution = (int * (Cic.context * Cic.term)) list 
+
+  (** @raise SubstNotFound *)
+val lookup_subst: int -> substitution -> Cic.context * Cic.term
 
 (* apply_subst subst t                     *)
 (* applies the substitution [subst] to [t] *)
@@ -61,9 +66,12 @@ val delift :
   int -> substitution -> Cic.context -> Cic.metasenv ->
   (Cic.term option) list -> Cic.term ->
     Cic.term * Cic.metasenv * substitution
-
+val restrict :
+  substitution -> (int * int) list -> Cic.metasenv -> 
+  Cic.metasenv * substitution 
 (** {2 Pretty printers} *)
 
+val ppsubst_unfolded: substitution -> string
 val ppsubst: substitution -> string
 val ppterm: substitution -> Cic.term -> string
 val ppcontext: ?sep: string -> substitution -> Cic.context -> string
@@ -81,3 +89,12 @@ val fppsubst: Format.formatter -> substitution -> unit
 val fppterm: Format.formatter -> Cic.term -> unit
 val fppmetasenv: Format.formatter -> Cic.metasenv -> unit
 
+(*
+(* DEBUG *)
+val print_counters: unit -> unit
+val reset_counters: unit -> unit
+*)
+
+(* val clean_up_meta :
+  substitution -> Cic.metasenv -> Cic.term -> Cic.term
+*)