Java byte code library anyone?

[Sven Panne]

Before I start re-inventing the wheel, it might be better to ask the people
on this list first:

Has anybody already written a Haskell library for Java byte code manipulation
(reading/writing class files, editing byte codes, etc.)? Something in the
spirit of the Byte Code Engineering Library (http://jakarta.apache.org/bcel/)
or the Jikes Bytecode Toolkit (http://www.alphaworks.ibm.com/tech/jikesbt/)
would be extremely nice. It's not rocket science, but quite a bit of work.

Given the ubiquity of Java I'd be surprised if no one has done this before...

Cheers,
   S.