Re: Is it always possible to make a non-reentrant parser reentrant?
Akim Demaille <[email protected]>
| Newsgroups | gmane.comp.parsers.bison.general |
|---|---|
| Message-ID | <[email protected]> |
> Le 9 févr. 2019 à 00:21, Peng Yu <[email protected]> a écrit : > > Hi Simon, > >> Normally, you'd use lexer states to activate/deactivate rules. The >> primitive approach would be >> >> %x INITIAL HEREDOC > > I see %x is from flex. Bash can support nested heredoc. How can it be > implemented in flex? Flex offers push/pop for start conditions. See yypush_buffer_state and yypop_buffer_state. _______________________________________________ [email protected] https://lists.gnu.org/mailman/listinfo/help-bison