> Just imagine trying to express the complexity of it in continuations or some sort o[f] state machine! You’d probably want to use either some sort of code gen

> Just imagine trying to express the complexity of it in continuations or some sort o[f] state machine! You’d probably want to use either some sort of code generation to do the requisite CPS transform[1] or the Duff’s-device-like preprocessor trick[2], but it’s definitely doable with some compiler support. Not in an existing codebase, though. (Brought to you by working on a C codebase that does express stuff like this as explicit callbacks and context structures. Ugh.) [1] https://dx.doi.org/10.1007/s10990-012-9084-5 https://dx.doi.org/10.1007/s10990-012-9084-5, https://www.irif.fr/~jch/research/cpc-2012.pdf https://www.irif.fr/~jch/research/cpc-2012.pdf, https://github.com/kerneis/cpc https://github.com/kerneis/cpc [2] https://www.chiark.greenend.org.uk/~sgtatham/coroutines.html https://www.chiark.greenend.org.uk/~sgtatham/coroutines.html