Meep

A programming language that compiles to brainfuck. Made for the sole purpose of writing a brainfuck interpreter in meep and then compiling the interpreter to have a brainfuck interpreter written in brainfuck.

Installation

Very simple, just git clone this repository.

Usage

node . path/to/meep_file path/to/output

Example:

This command for example, compiles a single file in the test suite:

node . test/3.meep hello_world.bf

It will generate a a file called hello_world.bf in the root directory of the project. Note that you will still need a brainfuck interpreter for running the code that the meep compiler produces. I personally use this one.

Features

• Variable declaration and assignment:

var str = "Hello world !";
print str; // Hello world !
var letter = 'c';
print letter; // c
set letter = 'b'
print letter; // b

The print statement prints a single byte or a stream of bytes (strings or buses/arrays) by interpreting each byte as an ascii character.

• Looping and conditionals

var array = {1, 2, 3 4}

var i = 0;
while i < len(array) {
    print '0' + array[i]; // add '0' to print the ascii char of that digit
    set i = i + 1;
}

var sayHello = false;

if sayHello print "Hello"
else print "Bye"

• Binary operators:

Meep was a language written to only write a brainfuck interpreter in the end so the only operators supported are the ones I would need for that task. These are:

+ - != ==

Yeah, that's it. When working with unsigned integers, it is quite easy to use just these 4 as || and && so I didn't bother implementing those.

The Bf Interpreter

The Meep source code for the brainfuck interpreter can be found in test\bfinterpreter.meep and the compiled brainfuck-in-brainfuck interpreter is at the root directory, in interpreter.bf.