Arto's Brainfuck Interpreter
Copyright (c) 2011 Arto Jonsson <[email protected]>

ABOUT

   Arto's Brainfuck Interpreter or Abi is a simple interpreter for the
   brainfuck programming language. It was created for learning the Lua
   language. The interpreter uses Lua's metatable system to allow arbitrary
   large memory space.

   More information about brainfuck: https://en.wikipedia.org/wiki/Brainfuck

USAGE

   The interpreter supports only two functions:

       new() -- create an interpreter instance
       do_string(s) -- interpret brainfuck code in string 's'

   Reading and writing is done using Lua's standard 'io:write' and 'io:read'
   functions.

   Hello World example:

        require 'abi'

        abi = Abi:new()
        abi:do_string("++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<<+++++++++++++++.>.+++.------.--------.>+.>.")