src/HOL/IMP/Com.thy
author wenzelm
Sat, 07 Apr 2012 16:41:59 +0200
changeset 47389 e8552cba702d
parent 45415 bf39b07a7a8e
child 47818 151d137f1095
permissions -rw-r--r--
explicit checks stable_finished_theory/stable_command allow parallel asynchronous command transactions; tuned;

header "IMP --- A Simple Imperative Language"

theory Com imports BExp begin

datatype
  com = SKIP 
      | Assign vname aexp       ("_ ::= _" [1000, 61] 61)
      | Semi   com  com         ("_;/ _"  [60, 61] 60)
      | If     bexp com com     ("(IF _/ THEN _/ ELSE _)"  [0, 0, 61] 61)
      | While  bexp com         ("(WHILE _/ DO _)"  [0, 61] 61)

end