This week's book giveaway is in the Mac OS forum. We're giving away four copies of a choice of "Take Control of Upgrading to Yosemite" or "Take Control of Automating Your Mac" and have Joe Kissell on-line! See this thread for details.
Seems to me that is essentially the problem solved by a compiler so you should look for tutorials on compiler writing. To give you a start, you will need some way to recognize/distinguish between operators and operands. Bill