I was only commenting on his claims about the academic literature on parsing, not whether he should use the techniques verbatim.

The problem with structured approaches to incremental parsing is that you rarely want incremental parsing alone. You’re going to want to do something else with the resulting parse tree (name resolution, type checking, compilation, etc.) and no structured approach to incremental parsing will help you there. Once you’re stuck writing an incremental type checker by hand, you probably have the right framework for also writing an incremental parser.

Rust has additional complications, e.g. the macro system and the fact that the language is defined by a single implementation.