Brainfuck

Brainfuck is as its name implies a simple Brainfuck interpreter written in Nit.

It has almost as much purposes as the language itself, except it provides a good example for Nit programs that work while being concise.

Specification

The language is designed to need only a few things :

• One instruction pointer to the current instruction
• One array of Bytes for all manipulations of data
• One data pointer to select where to write/read data

Brainfuck a small instruction set, only eight instructions :

• >: Increments the data pointer
• <: Decrements the data pointer
• +: Increments the byte in the current cell
• -: Decrements the byte in the current cell
• [: If the current cell's value is 0, jumps to the matching ]
• ]: If the current cell's value is non-zero, jumps to the matching [
• .: Writes the current cell's value to stdout
• ,: Reads a char from stdin and stores it in the current cell

How to use

First, compile the interpreter with the Nit compiler/interpreter, and launch the program on a brainfuck source file for interpretation.

Example:

nitc ./brainfuck.nit
./brainfuck ./examples/hello.bf