I will add the lexer part of my grammar. The rest is longish and probably not relevant here (I hope).
======8 8=========================== -----Ursprüngliche Nachricht----- Von: "Pop Qvarnström" Gesendet: Jan 18, 2011 6:14:01 PM An: "Hiran Chaudhuri" Betreff: Re: [antlr-interest] How to handle blackslashes correctly? >Could you provide your grammar, or relevant parts of it? > >Cheers, >Pop > >On Tue, Jan 18, 2011 at 5:10 PM, Hiran Chaudhuri wrote: > >> Hello everybody. >> >> I've got input files with different meaning for backslashes. Therefore my >> lexer does not really know how to generate the tokens and the parser does >> not what I want it to do. Maybe someone can help me checking this? >> A backslash before a linefeed means the linefeed is just whitespace, >> whereas elsewhere it is not. >> A backslash in some regions of the file is meant to be part of a file path >> (Windows). >> A backslash in some regions of the file is part of a regular expression. >> I'm not interested in parsing that, so it shall be handled like a string >> value. >> A backslash before a quote inside a quoted string means the quote does not >> terminate the string. >> >> I've created a grammar that can handle all cases from my point of view. Now >> let's look at one fragment: >> >> BrowserMatch \bMSIE !no-gzip !gzip-only-text/html >> >> This should be parsed as >> Keyword BrowserMatch >> value \bMSIE >> not ! >> value no-gzip!gzip-only-text/html >> not ! >> value gzip-only-text/html >> >> but it is parsed as >> Keyword BrowserMatch >> unknown \b >> value MSIE >> ... >> >> My expression for value allows backslash and the necessary letters, still >> the parser thinks it should not recognize this value. >> What can be the reason for that? >> >> Hiran >> ___________________________________________________________ >> Empfehlen Sie WEB.DE DSL Ihren Freunden und Bekannten und wir >> belohnen Sie mit bis zu 50,- Euro! https://freundschaftswerbung.web.de >> >> List: http://www.antlr.org/mailman/listinfo/antlr-interest >> Unsubscribe: >> http://www.antlr.org/mailman/options/antlr-interest/your-email-address >> > >List: http://www.antlr.org/mailman/listinfo/antlr-interest >Unsubscribe: >http://www.antlr.org/mailman/options/antlr-interest/your-email-address ___________________________________________________________ WEB.DE DSL Doppel-Flat ab 19,99 €/mtl.! Jetzt mit gratis Handy-Flat! http://produkte.web.de/go/DSL_Doppel_Flatrate/2 List: http://www.antlr.org/mailman/listinfo/antlr-interest Unsubscribe: http://www.antlr.org/mailman/options/antlr-interest/your-email-address -- You received this message because you are subscribed to the Google Groups "il-antlr-interest" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/il-antlr-interest?hl=en.
