author | haftmann |
Mon, 13 Nov 2006 15:43:06 +0100 | |
changeset 21329 | 7338206d75f1 |
parent 16417 | 9bc16273c2d4 |
permissions | -rw-r--r-- |
header {* \chapter{The Rely-Guarantee Method} \section {Abstract Syntax} *} theory RG_Com imports Main begin text {* Semantics of assertions and boolean expressions (bexp) as sets of states. Syntax of commands @{text com} and parallel commands @{text par_com}. *} types 'a bexp = "'a set" datatype 'a com = Basic "'a \<Rightarrow>'a" | Seq "'a com" "'a com" | Cond "'a bexp" "'a com" "'a com" | While "'a bexp" "'a com" | Await "'a bexp" "'a com" types 'a par_com = "(('a com) option) list" end