[xsd-users] Enumerated types that serialize as numbers

[Boris Kolpackov]

Hi Ray,

Ray Lischner <rlischner at proteuseng.com> writes:

> We can use --custom-type and customize classes easily enough, but we
> would need to customize each enumerated type individually.

You could create a class template that provides the enum semantics that
you need and then use it to "wrap" generated enums via type customization.
For example:

template <typename T>
class numeric_enum: public T
{
  // Customize parsing c-tors to expect numbers.
};

// Customize the serialization operators to save enum values as numbers.

Then:

--custom-type my_enum=numeric_enum<my_enum_base>/my_enum_base

Converting to/from numbers is easy via the underlying enum type
(my_enum_base::value). The only thing that you won't be able to
do is validate that the number you get in the parsing c-tor is
within range.

Boris