(* Title: HOLCF/IOA/ABP/Impl.thy
ID: $Id$
Author: Olaf Müller
*)
header {* The implementation *}
theory Impl
imports Sender Receiver Abschannel
begin
types
'm impl_state = "'m sender_state * 'm receiver_state * 'm packet list * bool list"
(* sender_state * receiver_state * srch_state * rsch_state *)
constdefs
impl_ioa :: "('m action, 'm impl_state)ioa"
"impl_ioa == (sender_ioa || receiver_ioa || srch_ioa || rsch_ioa)"
sen :: "'m impl_state => 'm sender_state"
"sen == fst"
rec :: "'m impl_state => 'm receiver_state"
"rec == fst o snd"
srch :: "'m impl_state => 'm packet list"
"srch == fst o snd o snd"
rsch :: "'m impl_state => bool list"
"rsch == snd o snd o snd"
end