There is no use implementing the release and deassign methods as
port commands. It's confusing and a waste of vvp_net_t functionality.
It also obscures what needs to be done to more force/release into
the filter object.
This is moving towards moving force/release out of the signal
class. The end-game is to remove all of the wire implementation
out of the functor and into the filter. Variables will remain in
the functor.
Move the vvp_vpi_callback to the vvp_net_sig.h header file, and
collapse some useless hierarchy. (Specifically, all callbackable
items are also wordable.)
Move the run_vpi_callback invocation for wires/variables from the
output generator to the newly implemented filter object. This is
starting to get the filter class working.
the vvp_net.h header file is getting pretty huge. This divides
the obviously separable signal functor code out into its own
header and source files.
Also, fill out the use of the filter member of the vvp_net_t
object. Test the output of the vvp_net_t against the filter.
Stephen Williams