This Befunge Interpreter Tool is one of Codewars JavaScript Katas on Level Four, Esoteric languages are pretty hard to program, but it's fairly interesting to write interpreters for them!
Befunge-93 is a language in which the code is presented not as a series of instructions, but as instructions scattered on a 2D plane; the pointer starts at the top-left corner and defaults to moving right through the code. Read more about Befunge-93 and its instructions from Wikipedia.
If your befunge code instructions are separated by directions and each of them on a separate line, like the following befunge code:
>987v>.v
v456< :
>321 ^ _@
So then, please put \n instead of actual tap for a newline, here's an example of what the above code should look like:
>987v>.v\nv456< :\n>321 ^ _@
this will create the output: 123456789
It looks like this tool take time to interpret the given code but it's NOT, nothing with the performance but I do it this way actually to represent how the interpreter works and travel among the given directions!
- Users must enter their instructions as one line.
- Only a single PC (thread) is supported.
- Just a single unbounded stack.
Note: Befunge-93 code is supposed to be restricted to 80x25. - The code flow is working asynchronously by using async functions that return promises in order to show users the progress of the interpreter, which affects the performance :").