Hst hst

Initial Haskell CSPM implementation

This is an initial patch implementing the CSPM language in Haskell. I've chosen Haskell since, like CSPM, it's a lazy functional language. This means we don't have to “implement” any of the functional features of CSPM; rather, we can just call the appropriate Haskell functions.

This patch includes a basic implementation of the simple non-process expressions in CSPM. It does not yet include variable references, ‘let’ bindings, or functions, since they'll all require static-scoped environments. There is a basic test suite, based on QuickCheck. I also still need to wrap everything up in a Cabal package.

Lighthouse: [#2] http://github.com/dcreager/hst/c...