(* Title: HOL/HOLCF/IOA/ABP/Spec.thy
Author: Olaf Müller
*)
section {* The specification of reliable transmission *}
theory Spec
imports IOA Action
begin
definition
spec_sig :: "'m action signature" where
sig_def: "spec_sig = (UN m.{S_msg(m)},
UN m.{R_msg(m)} Un {Next},
{})"
definition
spec_trans :: "('m action, 'm list)transition set" where
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}"
definition
spec_ioa :: "('m action, 'm list)ioa" where
ioa_def: "spec_ioa = (spec_sig, {[]}, spec_trans)"
end