[Yhc] Bytecode module interface

[Neil Mitchell]

Hi Robert,

> Thanks for this Neil.  Can I assume this code is also under the GPL?
All of the code is under the GPL, it says so on the wiki (maybe
putting the license on a wiki isn't the best idea...), I guess we
deleted LICENSE by accident at some point.

I wrote all the stuff in that .zip, so if another license is better
for you, I'm sure it can be arranged. Since the bytecode will be a
library, the GPL might not be the best choice anyway.


> In that case I may see if I can move this code in that direction.  I have the
> idea that it would be nice to automaticly derive interfaces and serialization
> code from the xml structure found in the YHC source, and use Eternal
> Compatibility in Theory to maintain compatibility across bytecode versions.

That would be very nice. If you look at 
/src/compiler98/ByteCode/data/haskell.xsl that generates some Haskell
code for reading bytecodes - I never got round to integrating it into
the haskell module reader, but it shouldn't be too hard. The Python
version of Yhi (Pyhi) uses that .xml already.

Thanks

Neil