I meant programming-time, but runtime is also a good point.

Cross-language libraries don't seem to be super common for this. The recovering-sense-from-text tools I named all use different parsers in their respective languages.

Again, reading (and yes, technically that's also parsing) from an AST from a data-exchange formatted file is mags simpler. And for parsing these schemes there are battle-tested cross-language solutions, e.g. protobuf.