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https://github.com/finkel-lang/finkel
Haskell in S-expression
https://github.com/finkel-lang/finkel
compiler haskell language lisp programming-language repl
Last synced: about 2 months ago
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Haskell in S-expression
- Host: GitHub
- URL: https://github.com/finkel-lang/finkel
- Owner: finkel-lang
- License: bsd-3-clause
- Created: 2020-01-14T09:28:46.000Z (about 5 years ago)
- Default Branch: master
- Last Pushed: 2024-09-18T09:54:38.000Z (4 months ago)
- Last Synced: 2024-09-18T13:10:56.121Z (4 months ago)
- Topics: compiler, haskell, language, lisp, programming-language, repl
- Language: Haskell
- Homepage: https://finkel.readthedocs.io/
- Size: 21.5 MB
- Stars: 171
- Watchers: 6
- Forks: 2
- Open Issues: 2
-
Metadata Files:
- Readme: README.md
- Contributing: CONTRIBUTING.md
- License: LICENSE
- Code of conduct: CODE_OF_CONDUCT.md
Awesome Lists containing this project
README
# Finkel
[![CI status][ci-badge]][ci]
[![Documentation][doc-badge]][doc]
[![Codecov][codecov-badge]][codecov]
Finkel is a statically typed, purely functional, and non-strict-by-default
[LISP][lisp] flavored programming language.
Or in other words, **[Haskell][haskell] in S-expression**.
## Features
- Integration with existing Haskell modules.
- Building Haskell-compatible [Cabal][cabal] packages.
- Documentation generation with [Haddock][haddock].
- Lisp style macro system.
- Tool executable, including interactive REPL.
## Example
### Sample code
```clojure
;;;; File: fib.hs
(:doc "Simple example module to show fibonacci number.
The compiled executable takes an integer argument from command line
input and print the fibonacci number of the argument.")
(defmodule Main
(import
(System.Environment [getArgs])))
(defn (:: main (IO ()))
"The main entry point function."
(>>= getArgs (. print fib read head)))
(defn (:: fib (-> Int Int))
"Naive fibonacci function."
[0] 0
[1] 1
[n] (+ (fib (- n 1))
(fib (- n 2))))
```
### Compiling an executable
```console
$ finkel make -o fib fib.hs
[1 of 1] Compiling Main ( fib.hs, fib.o )
Linking fib
$ ./fib 10
55
```
### Running REPL
```console
$ finkel repl
Hit `Ctrl-d' or type ,q to quit, type ,? for help.
> ,load fib.hs
[1 of 1] Compiling Main ( fib.hs, interpreted )
; loaded fib.hs
> ,info fib
fib :: Int -> Int -- Defined at fib.hs:16:11
> (map fib [1 .. 10])
[1,1,2,3,5,8,13,21,34,55]
> (System.Environment.withArgs ["10"] main)
55
> ,q
```
## Further resources
See the [documentation][doc] for more details.
## Contributing
Contributions are welcome. Please see the [CONTRIBUTING.md][contrib].
[ci-badge]: https://img.shields.io/github/actions/workflow/status/finkel-lang/finkel/ci.yml?logo=github&label=ci
[ci]: https://github.com/finkel-lang/finkel/actions/workflows/ci.yml
[doc-badge]: http://readthedocs.org/projects/finkel/badge/?version=latest
[doc]: https://finkel.readthedocs.io/en/latest/
[codecov-badge]: https://codecov.io/gh/finkel-lang/finkel/branch/master/graph/badge.svg
[codecov]: https://codecov.io/gh/finkel-lang/finkel
[cabal]: https://www.haskell.org/cabal/
[contrib]: https://github.com/finkel-lang/finkel/blob/master/CONTRIBUTING.md
[haddock]: https://www.haskell.org/haddock/
[haskell]: https://haskell.org
[lisp]: https://en.wikipedia.org/wiki/Lisp_(programming_language)