It's an esolang inspired by BrainFuck. It is tape based and looks sort of like this:
Temp: 0
[0,0,0,0,0,0,0,0,0...]
^
The main idea is: You can move the cursor on the tape and add, subtract, divide or multiply cells. There's some other stuff in there as well, read more in the Tokens section.
const Runtime = require('./runtime.js')
new Runtime(
// The code you want to parse, this code prints ABC
'++++++++++^>++++++*+++++|+|+.',
// The function to be called on flush ( | )
(text) => console.log(text)
).run() // Run it!| Token | What it does |
|---|---|
| + | Add one to the current cell |
| - | Subtract one from the current cell |
| > | Move to the next cell |
| < | Move to the previous cell |
| ^ | Clone the current cell to the temp cell |
| * | Multiply the current cell with the temp cell, outputs to current cell |
| / | Divide the current cell with the temp cell, outputs to current cell |
| [ | Push a new loopback position |
| ] | If the current cell is 0, move on. Else: go back to the last loopback |
| . | Get the current cell, convert to string (UTF-16), push to the print buffer and flush it |
| | | Get the current cell, convert to string (UTF-16), push to the print buffer |
| @ | Starts and ends comments, everything between is ignored on runtime |