improved superclass entry for classes and definition status of is_class, class
corrected recursive definitions of "method" and "fields"
cleanup of many proofs, removed superfluous tactics and theorems
(* Title: HOL/MicroJava/J/Decl.thy
ID: $Id$
Author: David von Oheimb
Copyright 1997 Technische Universitaet Muenchen
Class declarations and programs
*)
Decl = Type +
types fdecl (* field declaration, cf. 8.3 (, 9.3) *)
= "vname \\<times> ty"
types sig (* signature of a method, cf. 8.4.2 *)
= "mname \\<times> ty list"
'c mdecl (* method declaration in a class *)
= "sig \\<times> ty \\<times> 'c"
types 'c class (* class *)
= "cname \\<times> fdecl list \\<times> 'c mdecl list"
(* superclass, fields, methods*)
'c cdecl (* class declaration, cf. 8.1 *)
= "cname \\<times> 'c class"
consts
Object :: cname (* name of root class *)
ObjectC :: 'c cdecl (* decl of root class *)
defs
ObjectC_def "ObjectC == (Object, (arbitrary, [], []))"
types 'c prog = "'c cdecl list"
translations
"fdecl" <= (type) "vname \\<times> ty"
"sig" <= (type) "mname \\<times> ty list"
"mdecl c" <= (type) "sig \\<times> ty \\<times> c"
"class c" <= (type) "cname \\<times> fdecl list \\<times> (c mdecl) list"
"cdecl c" <= (type) "cname \\<times> (c class)"
"prog c" <= (type) "(c cdecl) list"
consts
class :: "'c prog => (cname \\<leadsto> 'c class)"
is_class :: "'c prog => cname => bool"
translations
"class" => "map_of"
"is_class G C" == "class G C \\<noteq> None"
consts
is_type :: "'c prog => ty => bool"
primrec
"is_type G (PrimT pt) = True"
"is_type G (RefT t) = (case t of NullT => True | ClassT C => is_class G C)"
end