Hi, I built a small C++ function sorter on top of flint's Tokenizer.d: https://github.com/kuettler/tooling
This is a proof of concept implementation (only useful if you really want your functions to be sorted). The idea is that a simple scanning of the token array gives you enough structure to edit your code. This aims to be useful for C++ code generation and code cleanup. Of course, this is not a general approach but asks for special purpose tools for each code base. Thanks to D this could be feasible.
Cheers, Uli