There is a pretty nice parser combinator library in the capnproto compiler: https://github.com/capnproto/capnproto/tree/master/c%2B%2B/src/kj/parse https://gith

There is a pretty nice parser combinator library in the capnproto compiler: https://github.com/capnproto/capnproto/tree/master/c%2B%2B/src/kj/parse https://github.com/capnproto/capnproto/tree/master/c%2B%2B/s.... Here is an example of how it is used: https://github.com/capnproto/capnproto/blob/950d23a13f1d602d38b8fe83c2c038dc5d30fba6/c%2B%2B/src/capnp/compiler/parser.c%2B%2B#L411 https://github.com/capnproto/capnproto/blob/950d23a13f1d602d...