mattaudesse/olifant

A simple programming language targeting LLVM

Olifant

A simple functional language targeting LLVM, WIP

Project is setup with stack

$ git pull https://github.com/jaseemabid/Olifant && cd Olifant
$ stack setup && stack build

See the blog post Lessons learned building a toy compiler for a detailed introduction to the project.

The test coverage isn't great, but has a bunch of good code samples. They run pretty fast too.

$ stack test

The README maybe sparse, but there is a lot of inline documentation in the code; which can be read with Haddock.

$ stack haddock --no-haddock-deps --open

Olifant programs can be compiled to native binaries and executed in one step.

$ stack exec olifant <<< 'sum 4 5'
$ 9

The intermediary forms can be exported with additional flags. For example, the output of the parser can be viewed with -p.

$ stack exec olifant -- -p <<< 'sum 4 5'

[ App (Ref
       {rname = "sum", ri = 0, rty = TInt :> (TInt :> TInt), rscope = Extern})
      [Lit (Number 4), Lit (Number 5)]
]

Similarly, Core is exported with -c and the intermediary LLVM IR is exported with -l

$ olifant -l examples/vars.ol
$ file vars.ll
vars.ll: ASCII text

The compiler accepts programs from stdin or takes a file as argument.

Docker images are automatically built by quay.io as well as by Travis CI as part of automated testing. Any of the following work.

$ docker pull olifant/olifant

I would LOVE any code contributions. There is a milestone to track priority bugs and features if you are looking for some inspiration.