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(* Title: HOL/IOA/example/Spec.thy
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ID: $Id$
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Author: Tobias Nipkow & Konrad Slind
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Copyright 1994 TU Muenchen
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The specification of reliable transmission
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*)
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156
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Spec = List + IOA + Action +
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consts
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spec_sig :: "'m action signature"
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spec_trans :: "('m action, 'm list)transition set"
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spec_ioa :: "('m action, 'm list)ioa"
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defs
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sig_def "spec_sig == <UN m.{S_msg(m)}, \
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\ UN m.{R_msg(m)}, \
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\ {}>"
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trans_def "spec_trans == \
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\ {tr. let s = fst(tr); \
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\ t = snd(snd(tr)) \
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\ in \
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\ case fst(snd(tr)) \
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\ of \
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\ S_msg(m) => t = s@[m] | \
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\ R_msg(m) => s = (m#t) | \
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\ S_pkt(pkt) => False | \
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\ R_pkt(pkt) => False | \
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\ S_ack(b) => False | \
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\ R_ack(b) => False | \
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\ C_m_s => False | \
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\ C_m_r => False | \
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\ C_r_s => False | \
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\ C_r_r(m) => False}"
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ioa_def "spec_ioa == <spec_sig, {[]}, spec_trans>"
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end
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