--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/HOLCF/IOA/Storage/Spec.thy Wed Dec 02 15:55:39 1998 +0100
@@ -0,0 +1,36 @@
+(* Title: HOL/IOA/example/Spec.thy
+ ID: $Id$
+ Author: Olaf Mueller
+ Copyright 1997 TU Muenchen
+
+The specification of a memory
+*)
+
+Spec = IOA + Action +
+
+
+consts
+
+spec_sig :: "action signature"
+spec_trans :: "(action, nat set * bool)transition set"
+spec_ioa :: "(action, nat set * bool)ioa"
+
+defs
+
+sig_def "spec_sig == (UN l.{Free l} Un {New},
+ UN l.{Loc l},
+ {})"
+
+trans_def "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}"
+
+ioa_def "spec_ioa == (spec_sig, {({},False)}, spec_trans,{},{})"
+
+end