X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fsoftware%2Fcomponents%2Fng_refiner%2FnCicMetaSubst.mli;h=fd101414df75853f61fe6eabb926ead6ab559036;hb=9d33fd0863f207cee7f882ae28c83e1944d2a0f1;hp=1d7b6729e11ee5d6be2db10be7f2bbe3c8e08ebd;hpb=002d456397be2f0046bb50356e80816f7296647d;p=helm.git

diff --git a/helm/software/components/ng_refiner/nCicMetaSubst.mli b/helm/software/components/ng_refiner/nCicMetaSubst.mli
index 1d7b6729e..fd101414d 100644
--- a/helm/software/components/ng_refiner/nCicMetaSubst.mli
+++ b/helm/software/components/ng_refiner/nCicMetaSubst.mli
@@ -14,22 +14,14 @@
 exception MetaSubstFailure of string Lazy.t
 exception Uncertain of string Lazy.t
 
-(*
-exception AssertFailure of string Lazy.t
-exception DeliftingARelWouldCaptureAFreeVariable;;
-val apply_subst : Cic.substitution -> Cic.term -> Cic.term 
-val apply_subst_context : Cic.substitution -> Cic.context -> Cic.context 
-val apply_subst_metasenv: Cic.substitution -> Cic.metasenv -> Cic.metasenv 
-
-(*** delifting ***)
+val debug: bool ref
 
-val restrict :
-  Cic.substitution -> (int * int) list -> Cic.metasenv -> 
-  Cic.metasenv * Cic.substitution 
-*)
+(* the index of the last created meta *)
+val maxmeta: unit -> int
 
 (* the delift function takes in input a metavariable index, a local_context
- * and a term t, and substitutes every Rel in t with its position in
+ * and a term t, and substitutes every subterm t' of t with its position 
+ * (searched up-to unification) in
  * the local_context (which is the Rel moved to the canonical context).
  * Typically, the list of optional terms is the explicit
  * substitution that is applied to a metavariable occurrence and the result of
@@ -43,21 +35,31 @@ val restrict :
  * in the term (for occur check).
  *)
 val delift : 
+  unify:(NCic.metasenv -> NCic.substitution -> NCic.context ->
+    NCic.term -> NCic.term -> (NCic.metasenv * NCic.substitution) option) -> 
   NCic.metasenv -> NCic.substitution -> NCic.context -> 
   int -> NCic.local_context -> NCic.term ->
     (NCic.metasenv * NCic.substitution) * NCic.term
 
+(* restrict metasenv subst n l
+   returns metasenv, subst, created meta and l' where l' is the list of
+   additional (i.e. l' does not intersects l) positions whose restriction was
+   forced because of type dependencies *)
 val restrict: 
     NCic.metasenv ->
     NCic.substitution ->
-      int -> int list -> NCic.metasenv * NCic.substitution * int
+    int -> int list ->
+     NCic.metasenv * NCic.substitution * int * int list
 
 (* bool = true if the type of the new meta is closed *)
 val mk_meta: 
-   ?name:string -> 
+   ?attrs:NCic.meta_attrs -> 
    NCic.metasenv -> NCic.context -> 
-    [ `WithType of NCic.term | `Term | `Type | `Sort ] -> 
-    NCic.metasenv * NCic.term * NCic.term (* menv, instance, type *)
+    ?with_type:NCic.term -> NCicUntrusted.meta_kind ->
+    NCic.metasenv * int * NCic.term * NCic.term (* menv,metano,instance,type *)
+
+(* extend_meta m n: n must be in m *)
+val extend_meta: NCic.metasenv -> int -> NCic.metasenv * NCic.term
 
 (* returns the resulting type, the metasenv and the arguments *)
 val saturate:
@@ -65,3 +67,5 @@ val saturate:
     NCic.context -> NCic.term -> int ->
        NCic.term * NCic.metasenv * NCic.term list
 
+val is_out_scope_tag : NCic.meta_attrs -> bool
+val int_of_out_scope_tag : NCic.meta_attrs -> int