https://en.wikipedia.org/wiki/Lexer_hack https://en.wikipedia.org/wiki/Lexer_hack Make your parser call back into your lexer, so it can pass state to it; make

https://en.wikipedia.org/wiki/Lexer_hack https://en.wikipedia.org/wiki/Lexer_hack Make your parser call back into your lexer, so it can pass state to it; make the set of type names available to it.