beanscript

Beanscript is an imperative language with CoffeeScript-inspired syntax and Haskell-inspired static types -- full HM type inference plus typeclasses. It compiles to WebAssembly.

This is a work in progress.

How to run

First, for wasm support, install Node v8.x

Second, install CoffeeScript

Then, to compile a beanscript file to WebAssembly s-expressions:

coffee main.coffee input.bs > output.wast

To convert the .wast file to .wasm, install wabt

git clone --recursive https://github.com/WebAssembly/wabt/
cd wabt
make gcc-release
# Put the following in your .bashrc
export PATH=/path/to/wabt/out/gcc/Release:$PATH

Then, you can run:

wast2wasm output.wast -o output.wasm

Finally, to execute the wasm file:

node ./runwasm.js output.wasm

Convenient shortcuts

I have the following in my ~/.bashrc:

# Add wast2wasm to PATH
export PATH=/path/to/wabt/out/gcc/Release:$PATH
alias bsc='coffee /path/to/beanscript/main.coffee'
alias runwasm='node /path/to/beanscript/runwasm.js'
function bs {
  TEMP=$(mktemp)
  bsc $@ > $TEMP
  if [[ -s $TEMP ]]; then runwast $TEMP; fi
  rm $TEMP
}
function runwast {
  TEMP2=$(mktemp)
  wast2wasm $1 -o $TEMP2
  runwasm $TEMP2
  rm $TEMP2
}

Then, I can simply:

bsc input.bs > output.wast

or

bs input.bs