(* Title: HOL/MicroJava/JVM/JVMExec.thy
ID: $Id$
Author: Cornelia Pusch
Copyright 1999 Technische Universitaet Muenchen
*)
header {* Program Execution in the JVM *}
theory JVMExec = JVMExecInstr :
consts
exec :: "jvm_prog \<times> jvm_state => jvm_state option"
(** exec is not recursive. recdef is just used for pattern matching **)
recdef exec "{}"
"exec (G, xp, hp, []) = None"
"exec (G, None, hp, (stk,loc,C,sig,pc)#frs) =
(let
i = snd(snd(snd(the(method (G,C) sig)))) ! pc
in
Some (exec_instr i G hp stk loc C sig pc frs))"
"exec (G, Some xp, hp, frs) = None"
constdefs
exec_all :: "[jvm_prog,jvm_state,jvm_state] => bool"
("_ \<turnstile> _ -jvm-> _" [61,61,61]60)
"G \<turnstile> s -jvm-> t == (s,t) \<in> {(s,t). exec(G,s) = Some t}^*"
syntax (HTML)
exec_all :: "[jvm_prog,jvm_state,jvm_state] => bool"
("_ |- _ -jvm-> _" [61,61,61]60)
end