ihavenonickname/mythology

A small, simple and type safe programming language

Mythology

A small, simple and type safe programming language.

Running

$ git clone https://github.com/ihavenonickname/Mythology.git
$ cd Mythology
$ node mythology <path to your myth script> <options>

CLI options are

• --run Runs your code
• --ast Prints the abstract syntax tree of your code

Example code

function do_stuff (text str) text do
    number count = 8;

    while count > 0 do
        print(str);

        count = count - 1;
    end

    draw_matrix(10);

    return "Works like a charm";
end

# We got a comment
function draw_matrix (number size) do
    number n_row = 0;

    while n_row < size do
        number n_col = 0;
        text line = "";

        while n_col < size do
            if modulo(n_col + n_row, 2) is 0 do
                line = line + "X ";
            else
                line = line + "O ";
            end

            n_col = n_col + 1;
        end

        print(line); # Yep, a comment

        n_row = n_row + 1;
    end
end

function main () do
    print(do_stuff("Hello world from Mythology"));
end

---

This project is in very early stage.

mythology's Issues

Prevent division by 0

Interpreter should warn user when he attempts to divide something by 0.

Implement function declaration

Let user create functions.

format option

There should be a --format CLI option which formats (beautify) the source code.

Introduce comments

Mythology lang accepts no comments yet.

Comments should start with a sharp, be one-liners and ignored by the lexer (just like in Python).

Update readme

It's outdated

Elif

Permit elif construction.

if modulo(i, 15) is 0 do
    print("FizzBuzz");
elif modulo(i, 3) is 0 do
    print("Fizz");
elif modulo(i, 5) is 0 do
    print("Buzz");
end

Interpret unary expressions

Curretly the parser and the analyzer accept unary expressions, but interpreter doesnt.