(* Title: HOL/IOA/NTP/Spec.thy
ID: $Id$
Author: Tobias Nipkow & Konrad Slind
Copyright 1994 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)}, \
\ {})"
trans_def "spec_trans == \
\ {tr. let s = fst(tr); \
\ t = snd(snd(tr)) \
\ in \
\ case fst(snd(tr)) \
\ of \
\ 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 | \
\ C_m_s => False | \
\ C_m_r => False | \
\ C_r_s => False | \
\ C_r_r(m) => False}"
ioa_def "spec_ioa == (spec_sig, {[]}, spec_trans)"
end