--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/HOL/HOLCF/IOA/Storage/Spec.thy Sat Nov 27 16:08:10 2010 -0800
@@ -0,0 +1,33 @@
+(* Title: HOL/IOA/example/Spec.thy
+ Author: Olaf Müller
+*)
+
+header {* The specification of a memory *}
+
+theory Spec
+imports IOA Action
+begin
+
+definition
+ spec_sig :: "action signature" where
+ "spec_sig = (UN l.{Free l} Un {New},
+ UN l.{Loc l},
+ {})"
+
+definition
+ spec_trans :: "(action, nat set * bool)transition set" where
+ "spec_trans =
+ {tr. let s = fst(tr); used = fst s; c = snd s;
+ t = snd(snd(tr)); used' = fst t; c' = snd t
+ in
+ case fst(snd(tr))
+ of
+ New => used' = used & c' |
+ Loc l => c & l~:used & used'= used Un {l} & ~c' |
+ Free l => used'=used - {l} & c'=c}"
+
+definition
+ spec_ioa :: "(action, nat set * bool)ioa" where
+ "spec_ioa = (spec_sig, {({},False)}, spec_trans,{},{})"
+
+end