Maybe it's easier to cooperate/use cpp-peglib or chpeg

[mingodad]

I'm actually coopearitng/using cpp-peglib https://github.com/yhirose/cpp-peglib and chpeg https://github.com/ChrisHixon/chpeg and I think that both of then can be used/customized to produce a pegn parser interpreter and a playground too (https://chrishixon.github.io/chpeg/playground/ and https://yhirose.github.io/cpp-peglib/ ).

Here rwxrob/pegn-spec#15 (comment) I attached a pegn grammar usable by cpp-peglib and here it's ChrisHixon/chpeg#20 (comment) for chpeg.

Both projects cpp-peglib and chpeg welcome collaboration/ideas/improvements and I invite you and anyone interested on similar problems to join !

[rwxrob]

That looks like an excellent project that is solving different problems. The only thing in common is seeking to have a language-agnostic meta language, and I'm happy to see a lot of similar ideas to the syntax I've been using.

Unfortunately, there is just too much missing from that project for me to really get behind it. The method of capture is sub-optimal, I didn't see named captures within a given rule scope, and there is absolutely no sign anywhere of building out a large, reserved set of rule definitions with verbose human-friendly documentation for each reserved rule, potentially in multiple languages.