================================================================================
global enum with one option
================================================================================

enum A: byte { One, Two = 2, Three = 0x03 }

enum NoBody;

--------------------------------------------------------------------------------

(compilation_unit
  (enum_declaration
    name: (identifier)
    (base_list
      (predefined_type))
    body: (enum_member_declaration_list
      (enum_member_declaration
        name: (identifier))
      (enum_member_declaration
        name: (identifier)
        value: (integer_literal))
      (enum_member_declaration
        name: (identifier)
        value: (integer_literal))))
(enum_declaration
  name: (identifier)))
