(* Title: ZF/Coind/Values.thy
ID: $Id$
Author: Jacob Frost, Cambridge University Computer Laboratory
Copyright 1995 University of Cambridge
*)
Values = Language + Map +
(* Values, values environments and associated operators *)
consts
Val, ValEnv, Val_ValEnv :: "i"
codatatype <= "quniv(Const Un ExVar Un Exp)"
"Val" = v_const("c:Const")
| v_clos("x:ExVar","e:Exp","ve:ValEnv")
and
"ValEnv" = ve_mk("m:PMap(ExVar,Val)")
monos "[map_mono]"
type_intrs "[A_into_univ, mapQU]"
consts
ve_emp :: "i"
ve_owr :: "[i,i,i] => i"
ve_dom :: "i=>i"
ve_app :: "[i,i] => i"
defs
ve_emp_def "ve_emp == ve_mk(map_emp)"
ve_owr_def
"ve_owr(ve,x,v) == \
\ ve_mk(Val_ValEnv_case(%x.0,%x y z.0,%m.map_owr(m,x,v),ve))"
ve_dom_def
"ve_dom(ve) == Val_ValEnv_case(%x.0,%x y z.0,%m.domain(m),ve)"
ve_app_def
"ve_app(ve,a) == Val_ValEnv_case(%x.0,%x y z.0,%m.map_app(m,a),ve)"
end