+ last_sep = sep
+
+ if field is None:
+ # add separator for access to a yet unknown field
+ prefix_str += last_sep
+ else:
+ if _c_field_needs_accessor(field):
+ if _c_field_is_member_of_case_or_bitcase(field):
+ # case members are available in the deserialized struct,
+ # so there is no need to use the accessor function
+ # (also, their accessor function needs a different arglist
+ # so this would require special treatment here)
+ # Therefore: Access as struct member
+ prefix_str += last_sep + _cpp(field.field_name)
+ else:
+ # Access with the accessor function
+ prefix_str = field.c_accessor_name + "(" + prefix_str + ")"
+ else:
+ # Access as struct member
+ prefix_str += last_sep + _cpp(field.field_name)
+