dolfin team mailing list archive

[Anders Logg <logg@xxxxxxxxx>]

Yes, it does tie PyDOLFIN closely to FFC. In particular, assemble.py does

from ffc import *

This is necessary to have builtin form evaluation in DOLFIN. It needs a 
form language and it's difficult to support two different languages. We 
really need to implement UFL to have something which is not FFC-specific 
but we can try to find a way around for supporting SyFi forms with 
minimal hassle.

/Anders


Martin Sandve Alnæs wrote:
> Although it is a neat idea, I'm slightly worried about this approach,
> since it ties FFC very close to PyDOLFIN. I worry that it can create
> difficulties when using SFC (SyFi) instead of FFC in DOLFIN. Maybe if
> we create this infamous UFL and inherit from that instead of FFC, that
> can be a solution, but I'm planning on using DOLFIN and SFC together
> sooner than we'll likely finish UFL. Anyway, I'll let you know if I
> hit any real problems when I get that far.