[Ns-developers] NS-3: state of ns-3-pybindgen

[Mathieu Lacage]

hi gustavo,

On Tue, 2008-01-01 at 21:23 +0000, Gustavo Carneiro wrote:

> Still some important things are missing, namely:
> 
>    1- Parameters default values (but should not be very difficult to
> implement this);
>    2- Templated classes in general;  -> needed for protocol implementation (
> e.g. Header classes)
>    3- Callback<...> in particular;  -> needed for working with sockets and
> tracing (simple scripting needs this)
>    4- Simulator::Schedule* methods; -> needed for scripting
> 
> I'd be glad to hear some feedback on the general direction I'm heading.

Could you point me to a sample python program I can look at to get a
feel for the API ?

> As a side note, is there any reason why Simulator::Schedule is not using
> Callback's as parameters?  Because it would be easier to wrap only
> Callback<> and not Simulator::Schedule  as well...

Yes, there is a reason: the argument to Schedule is a fully bound
functor while a callback is a fully unbound functor. i.e., an EventImpl
is expected to store internally the set of values to give back to the
target function. However, binding this part of the API should be really
easy: it is a matter of implementing a PythonEventImpl subclass of the
EventImpl base class which implements the Expire method to call back
into a python class instance which stores the arguments to the target
function and imvokes the target python function directly. Of course,
this depends on making the proper Schedule (Ptr<EventImpl> ) methods
public.

> [1]  It should be noted that gccxml from CVS is now based on  GCC 4.2, and
> so parses all C++ code as well as GCC 4.2 itself, including the templated
> QueryInterface<T>() method.

cool.

Mathieu