This is a Brainfuck to WebAssembly compiler.

To use it, you'll need a recent GHC and wat2wasm installed in your environment.

Run make compile-compiler (or ghc brainass.hs) to compile the compiler.

Run ./brainass (or whatever you compiled brainass.hs to) to read how to use the compiler. It should print the following.

Usage: compile IMPORTED_INPUT IMPORTED_OUTPUT EXPORT
where
  IMPORTED_INPUT  is imported Javascript function for Brainfuck's ,
  IMPORTED_OUTPUT is imported Javascript function for Brainfuck's .
  EXPORT is the exported Javascript function from the WASM module

Brainfuck source is read fro STDIN and text wasm is written to STDOUT
(similar to `cat`)

Example:
  cat source.bf > compile bf.getchar bf.putchar bf > main.wat
  makes wasm module import bf.getchar as "," and bf.putchar as "."
  and the wasm module exports a function named bf.

Running make build-and-run-helloworld will:

1. build the compiler in local directory as ./compile.
2. compile a hello world program in Brainfuck to main.wasm
3. launch a server at http://localhost:8000/play.html which runs the wasm program

You can read this make command, as well as play.{js,html} to learn how to use the compiler as well.