--- a/src/Pure/proofterm.ML Mon Feb 04 13:16:54 2002 +0100
+++ b/src/Pure/proofterm.ML Tue Feb 05 15:51:28 2002 +0100
@@ -46,6 +46,7 @@
val add_prf_names : string list * proof -> string list
val add_prf_tfree_names : string list * proof -> string list
val add_prf_tvar_ixns : indexname list * proof -> indexname list
+ val maxidx_of_proof : proof -> int
val prf_abstract_over : term -> proof -> proof
val prf_incr_bv : int -> int -> int -> int -> proof -> proof
val incr_pboundvars : int -> int -> proof -> proof
@@ -264,6 +265,9 @@
val add_prf_tfree_names = fold_proof_terms add_term_tfree_names add_typ_tfree_names;
val add_prf_tvar_ixns = fold_proof_terms add_term_tvar_ixns (add_typ_ixns o swap);
+fun maxidx_of_proof prf = fold_proof_terms
+ (Int.max o apfst maxidx_of_term) (Int.max o apfst maxidx_of_typ) (~1, prf);
+
(***** utilities *****)