X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Focaml%2Fcic_proof_checking%2FcicSubstitution.mli;h=21a1f5d0e579d775c9e1ea2117b56898506f1990;hb=97c2d258a5c524eb5c4b85208899d80751a2c82f;hp=72e9a32c25fd136326e0656de6ae91a11f508abe;hpb=5a92117eeff70048d29e91ba24e113155d956e1b;p=helm.git

diff --git a/helm/ocaml/cic_proof_checking/cicSubstitution.mli b/helm/ocaml/cic_proof_checking/cicSubstitution.mli
index 72e9a32c2..21a1f5d0e 100644
--- a/helm/ocaml/cic_proof_checking/cicSubstitution.mli
+++ b/helm/ocaml/cic_proof_checking/cicSubstitution.mli
@@ -23,6 +23,34 @@
  * http://cs.unibo.it/helm/.
  *)
 
+exception CannotSubstInMeta;;
+exception RelToHiddenHypothesis;;
+exception ReferenceToVariable;;
+exception ReferenceToConstant;;
+exception ReferenceToInductiveDefinition;;
+
+(* lift n t         *)
+(* lifts [t] of [n] *)
+(* NOTE: the opposite function (delift_rels) is defined in CicMetaSubst *)
+(* since it needs to restrict the metavariables in case of failure      *)
 val lift : int -> Cic.term -> Cic.term
+
+
+(* lift from n t *)
+(* as lift but lifts only indexes >= from *)
+val lift_from: int -> int -> Cic.term -> Cic.term
+
+(* subst t1 t2                          *)
+(* substitutes [t1] for [Rel 1] in [t2] *)
 val subst : Cic.term -> Cic.term -> Cic.term
-val undebrujin_inductive_def : UriManager.uri -> Cic.obj -> Cic.obj
+
+(* subst_vars exp_named_subst t2     *)
+(* applies [exp_named_subst] to [t2] *)
+val subst_vars :
+ Cic.term Cic.explicit_named_substitution -> Cic.term -> Cic.term
+
+(* subst_meta [t_1 ; ... ; t_n] t                                *)
+(* returns the term [t] where [Rel i] is substituted with [t_i] *)
+(* [t_i] is lifted as usual when it crosses an abstraction      *)
+val subst_meta : (Cic.term option) list -> Cic.term -> Cic.term
+