# HG changeset patch
# User haftmann
# Date 1492071009 -7200
# Node ID 721feefce9c6e8b40560732b9183898e75ded306
# Parent b11b7ad226841dfa79836574972bdee0b3e5f0cb
early abort on depth limit
diff -r b11b7ad22684 -r 721feefce9c6 src/HOL/Quickcheck_Narrowing.thy
--- a/src/HOL/Quickcheck_Narrowing.thy Thu Apr 13 10:10:08 2017 +0200
+++ b/src/HOL/Quickcheck_Narrowing.thy Thu Apr 13 10:10:09 2017 +0200
@@ -99,13 +99,14 @@
definition "apply" :: "('a => 'b) narrowing => 'a narrowing => 'b narrowing"
where
- "apply f a d =
+ "apply f a d = (if d > 0 then
(case f d of Narrowing_cons (Narrowing_sum_of_products ps) cfs \
case a (d - 1) of Narrowing_cons ta cas \
let
- shallow = d > 0 \ non_empty ta;
+ shallow = non_empty ta;
cs = [(\(x # xs) \ cf xs (conv cas x)). shallow, cf \ cfs]
- in Narrowing_cons (Narrowing_sum_of_products [ta # p. shallow, p \ ps]) cs)"
+ in Narrowing_cons (Narrowing_sum_of_products [ta # p. shallow, p \ ps]) cs)
+ else Narrowing_cons (Narrowing_sum_of_products []) [])"
definition sum :: "'a narrowing => 'a narrowing => 'a narrowing"
where