Re: [ANN] an EBNF parser and coding pattern tool (LGPL)

[codeworker@free.fr (Cedric LEMAIRE)]

Hyman Rosen <hyrosen@mail.com> wrote in message news:<clcm-20030211-0009@plethora.net>...
> Cedric LEMAIRE wrote:
> > The C++ compiler doesn't give you introspection to implement C++
> > templates that work on the composition of a class.
> 
> Yes, this is true. To get this would require support from the
> compiler, and I imagine would look something like this - the
> result of introspect<T> for some type T would be a class with
> informative members, some of which would be like Alexandrescu's
> type lists that would carry member and base class information
> and could be processed recursively by other templates. We would
> also want an equivalent dynamic interface, so that we could take
> a polymorphic pointer or reference and deal with its introspection
> at runtime.

I did it too with 'CodeWorker' (but it isn't my intellectual property,
i have to change it before publishing the pattern scripts): a dynamic
introspector that handles 'MetaClass' composed of 'MetaAttribute's.
'MetaAttribute' is composed of 'MetaType'... and a lot of interesting
information about reflectivity in fact. A little as in JAVA, but in
C++. It allows writing very efficient dynamic GUI for example (with
smart tool tips that explain the constraints held by the attribute you
are populating - if you starts from an Object Design such as an
extended UML). Interesting when you have a few hundred Business
classes and a dialog window not too stupid to implement for each of
them.

It is very trivial to implement with 'CodeWorker'.

-- C�dric
-- 
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