Re: How to decide what to put in the lexer and the grammar respectively?
Akim Demaille <[email protected]>
| Newsgroups | gmane.comp.parsers.bison.general |
|---|---|
| Message-ID | <[email protected]> |
Hi Peng! > Le 17 févr. 2019 à 23:10, Peng Yu <[email protected]> a écrit : > > This lexical tie-in creates feedback from the parser to the lexer. So > the lexer cannot be tested standalone. Well, yes, it can, but that's not as elegant, agreed. > But the principle of separating lexer and parser is to make parser > builtin on top of the parser. Is there something that can avoid the > feedback yet still allow context-dependent parsing? Nothing I can think of ATM. Except scannerless parsing, that we don't have. > Alternatively, how > to just testing the lexer without having to get the parser involved? Let your tests deal with the context. But you certainly have thought about that, so I might have misunderstood your question. _______________________________________________ [email protected] https://lists.gnu.org/mailman/listinfo/help-bison