dolfin team mailing list archive

[Ola Skavhaug <skavhaug@xxxxxxxxx>]

kent-and@xxxxxxxxx skrev den 20/08-2008 følgende:
> > On Wednesday 20 August 2008 13:17:20 Garth N. Wells wrote:
> >> Garth N. Wells wrote:
> >> > Is it easy to modularise pyDOLFIN so that we generate multiple smaller
> >> > wrapper code files? It's getting really tedious to compile
> >> > dolfin_wrap.cc.
> >>
> >> Can anyone add anything on this? It's really annoying me.
> >
> > We do that in PyCC, so simula scons should be able to handle it. But I
> > understand that it brings more hassle than it solves. Ola and Martin could
> > probably elaborate on these issues.
> >
> > This has also been discussed previously see for example the late part of
> > the
> > thread:
> >
> > <http://www.fenics.org/pipermail/dolfin-dev/2008-March/006935.html>
> >
> > Johan
> >
> >
> 
> It is annoying.
> 
> One can break up the interface file in several interface files. The problem
> with this is that types defined in one interface file are often used in other
> interface files and here the attributes of these types are not known.
> The 'import' statement in SWIG is suppose to solve this, but last
> I tried I had problems.

You would need to import the SWIG interface file to get the type information
correct. For instance, if we split up the SWIG interface files in as many
Python modules as we have "dolfin modules":

cd dolfin
declare -i num_modules
num_modules=`tree -i -d -L 1 --noreport | wc -l`-1
echo "The number of sub-modules in dolfin is $num_modules"


For instance, if we need the type info from the graph module in the mesh
module, we would need to do:

// File e.g. mesh.i

%import path/to/graph.i

The problem now is that SWIG may use a lot of time parsing all the iterface
files several times and generating the same type information over and over
again.

Ola
 
> Someone should have a look at this ( I might do it, but not this week..).
> 
> Kent
> 
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