H2JVM

H2JVM (Haskell to JVM) is a high level library for writing JVM bytecode in Haskell. It handles the messy details such as jump offsets, stack map frames, and more.

H2JVM does its processing in a pipeline:

1. The user writes a class as a JVM.Data.Abstract.ClassFile, potentially using the JVM.Data.Abstract.Builder monads
2. This class is analysed using code in the JVM.Data.HLAnalyse modules - calculating jump offsets, etc. This stage may also do some optimisations, such as removing dead code.
3. The class is converted to a low level format (JVM.Data.Raw) using the JVM.Data.Convert module
4. The low level format is converted to a ByteString using the JVM.Data.Raw modules, which can be written to a file. or used in a JVM.