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(* Title: HOL/IOA/example/Spec.thy
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ID: $Id$
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12218
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Author: Olaf Müller
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*)
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header {* The specification of a memory *}
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theory Spec
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imports IOA Action
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begin
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definition
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spec_sig :: "action signature" where
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"spec_sig = (UN l.{Free l} Un {New},
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UN l.{Loc l},
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{})"
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definition
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spec_trans :: "(action, nat set * bool)transition set" where
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"spec_trans =
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{tr. let s = fst(tr); used = fst s; c = snd s;
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t = snd(snd(tr)); used' = fst t; c' = snd t
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in
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case fst(snd(tr))
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of
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New => used' = used & c' |
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Loc l => c & l~:used & used'= used Un {l} & ~c' |
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Free l => used'=used - {l} & c'=c}"
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definition
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spec_ioa :: "(action, nat set * bool)ioa" where
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"spec_ioa = (spec_sig, {({},False)}, spec_trans,{},{})"
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end
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