--- a/src/Pure/drule.ML Fri Nov 24 22:05:14 2006 +0100
+++ b/src/Pure/drule.ML Fri Nov 24 22:05:15 2006 +0100
@@ -128,6 +128,7 @@
val termI: thm
val mk_term: cterm -> thm
val dest_term: thm -> cterm
+ val cterm_rule: (thm -> thm) -> cterm -> cterm
val term_rule: theory -> (thm -> thm) -> term -> term
val sort_triv: theory -> typ * sort -> thm list
val unconstrainTs: thm -> thm
@@ -968,8 +969,8 @@
else raise THM ("dest_term", 0, [th])
end;
-fun term_rule thy f t =
- Thm.term_of (dest_term (f (mk_term (Thm.cterm_of thy t))));
+fun cterm_rule f = dest_term o f o mk_term;
+fun term_rule thy f t = Thm.term_of (cterm_rule f (Thm.cterm_of thy t));