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From: Edward Diener (eddielee_at_[hidden])
Date: 2006-02-01 12:27:40

David Abrahams wrote:
> Stefan Roiser <stefan.roiser_at_[hidden]> writes:
>> On 31 Jan 2006, at 19:40, David Abrahams wrote:
>>> Stefan Roiser <stefan.roiser_at_[hidden]> writes:
>>>> On 30 Jan 2006, at 17:08, Stefan Seefeld wrote:
>>>> With interaction with objects I meant e.g. through the meta-level
>>>> instantiate a class, get/set the data member values, call a function
>>>> on that instance, retrieve the function's return value and so on. I
>>>> may have missed that, but I couldn't find examples on the synopsis
>>>> page for this functionality.
>>>> Reflex code for this would look something like
>>>> Type t = Type::ByName("foo");
>>>> Object instance = t.Construct();
>>>> Object ret_obj = instance.Invoke("myFunction");
>>> Very interesting. Where do you get the object code for
>>> foo::myFunction? Or have you implemented a full C++ interpreter?
>> foo::myFunction will be invoked through a stub function which is part
>> of the dictionary library for class foo. A dictionary library may be
>> dynamically loaded in a program.
> Soooo.... what about templates? Do you have to do something to
> manually instantiate them? Or do you do some kind of on-the-fly
> compilation?

Since templates are not types, I would leave out the instantiation of
templates into types, which is a compile-time mechanism, from a run-time
reflection system, and concentrate instead on finding information about
types ( and objects ), and invoking objects from types. Of course an
already instantiated template class or template function is a type, and
should be subject to run-time reflection like any other type.

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