Awesome

Whitespace VM

A Whitespace interpreter written in Rust.

The source code when run is compiled into bytecode and run on a simple VM like many interpreted languages.

The translation is mostly verbatim with the exception of labels, which are translated into their equivalent jump targets at compile time.

Furthermore, the VM is designed to give a full stack traceback on error, unlike the reference implementation.

Limitations

There are several limitations that prevent this implementation from being fully compliant with the reference implementation in Haskell. The most notable is all integers are restricted in size to standard 64-bit signed integers instead of arbitrary precision integers. This was done mostly for simplicity's sake.

The stack traceback probably has some runtime cost associated with managing the virtual call stack.

Usage

Running the following should do the trick:

cargo run -- [file]

Examples

The examples directory contains a few simple examples copied directly from the reference implementation. They should all work; otherwise, something has gone wrong...