This is a toy interpreter for brainfuck (in its very early stage)

Run

stack run -- example.bf

or

nix run . -- example.bf

to see a "hello world" !

The "endless tape" is implemented with the zipper data structure in mind. Modifing the nth element of a linked list is expensive. In order to mitigate this, we can use a zipper implementation of a list, which facilitates traversal of near elements by expressing the list at a given point. The Tape type is a variant of a zipper list tailored for the brainfuck interpreter, since it is intentionally made to be not bounded to match the memory model of the brainfuck language.

https://en.wikipedia.org/wiki/Zipper_(data_structure) https://learnyouahaskell.com/zippers https://en.wikipedia.org/wiki/Brainfuck

Thanks to all those people who helped me along the way, without you this fun project wouldn't be possible :)

As said, have fun!