The first part is not that hard. the second part about intigrating this with generate_profile would be extremely difficult to say the least. You don't get that much control over the BGT profiler, so you can't tell it to append rather than overwrite to a file. It also just doesn't make sense IMO, because a profile is something that is created over the course of a scripts execution. You'd have to run the script, and that script would have to already have code to generate a profile. Once ran for a bit you'd have to then kill it and rename the profile results, something no one would want in a stats application I think. You can't just run the profiler on a given script. Also, parsing it perfectly will be almost impossible because there are so many edge cases. It can be done of course, I mean just look at how cython parses code and of course how languages themselves do it, but for that kind of parsing you really need to know what your doing. Like you have to factor in quotes, different coding styles, different positions of the braces, etc etc. So unless you want to spend weeks and weeks writing this application to make it detect all the things you want it to detect, it's almost impossible to just throw something quickly together like that.

Its not that hard to parse a programming language, because you just need to replicate whatever the compiler does already, since the language does have a fixed syntax. All you need to do is re-implement the very same syntax rules again and e.g. create an AST (abstract syntax tree) for the code you're analyzing. It is true however that this is a rather advanced topic and I don't think that you're that advanced yet already.
Best Regards.
Hijacker