--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/HOLCF/IOA/ABP/Spec.thy Wed Apr 30 11:24:14 1997 +0200
@@ -0,0 +1,39 @@
+(* Title: HOLCF/IOA/ABP/Spec.thy
+ ID: $Id$
+ Author: Olaf Mueller
+ Copyright 1995 TU Muenchen
+
+The specification of reliable transmission
+*)
+
+Spec = List + IOA + Action +
+
+consts
+
+spec_sig :: 'm action signature
+spec_trans :: ('m action, 'm list)transition set
+spec_ioa :: ('m action, 'm list)ioa
+
+defs
+
+sig_def "spec_sig == (UN m.{S_msg(m)},
+ UN m.{R_msg(m)} Un {Next},
+ {})"
+
+trans_def "spec_trans ==
+ {tr. let s = fst(tr);
+ t = snd(snd(tr))
+ in
+ case fst(snd(tr))
+ of
+ Next => t=s |\ (* Note that there is condition as in Sender *)
+ S_msg(m) => t = s@[m] |
+ R_msg(m) => s = (m#t) |
+ S_pkt(pkt) => False |
+ R_pkt(pkt) => False |
+ S_ack(b) => False |
+ R_ack(b) => False}"
+
+ioa_def "spec_ioa == (spec_sig, {[]}, spec_trans)"
+
+end