If you’re good with ActionScript 3 and want to try out all of its syntaxes: check this parsing demo.
ActionScript 3 is used in other places right now, so I continued pushing commits to the as3_parser Rust crate just for fun (I’m not really using the ActionScript 3 technologies right now), and supported new syntax introduced in Apache Royale and Samsung HARMAN’s new introductions, as well as some that I find Java-ish (like the configuration { ... } directive).
Inspired by JavaParser, I’m thinking of a symbol solver, but not really sure whether I’ll work in one right now as it’s hard.