The idea of a patent is to provide a means by which someone who invents something can protect his idea and stop it being used by someone else without him being paid for it.
To this end patents are written in such a way that they don't give specific details of a given implementation but talk about a mulititude of ways in which the idea may be implemented, the only details that they have to give is that someone 'sufficiently versed in the art' could in principle understand and build one.
Ultimatly the idea is that if you take someones idea and you build it in some way which is covered by the patent, the patentee can come to you and say 'pay me some money or I will sue you.'
The reason patent lawers charge lots of money to write patents is because they know how to take some idea and cover all the bases and make sure that any practical way of making the thing is covered by the patent.
The patent office has no interest in seeing code or detailed schematics and would probably reject one which contained any such thing.

The last patent appliction i was involved with involved a lot of block diagrams with labels such as 'counter1' some handwavy blurb about how the thing kind of works, claims about what made it sufficiently different to be wonderous and thats it, bob's your uncle fanny's your aunt.