Thomas Woelfle wrote: > Hi Jim, > > thanks for the tip. This lexer grammar for floating points is quite > impressive and answers some interesting questions to me. But it did > not solve my problem. Using the toekn rule 'FLOATING_POINT_LITERAL' in > my grammar results in the same MismatchedTokenException. My adjusted > grammar is: > > foo : FLOATING_POINT_LITERAL '.'; > > where "FLOATING_POINT_LITERAL" is the rule from your example. > > Parsing the input string "1.5." results in a MismatchedTokenException. > Any idea what is going wrong?
You will need more than just the FLOATING_POINT_LITERAL rule I think. You will need to allow the lexer to return the DOT token, but just delete the RANGE token, then your parser rule would be foo : FLOATING_POINT_LITERAL DOT ; When you add the '.' to your parser it auto-creates a lexer rule that will not fit well with the other lexer rules. Jim > > Regards, > Thomas >> Thomas Woelfle wrote: >> >>> Hi, >>> >>> I've been running into a strange problem using ANTLR 3.1.1. I don't >>> know wether it is a bug in my grammar or a bug in ANTLR. >>> In the language that has to be parsed following lines are legal >>> strings: >>> >>> 1. >>> 1.5. >>> >>> There is a rule where a numeric is followed by a dot. >>> >> Please look in the FAQ/examples: >> >> http://www.antlr.org/wiki/display/ANTLR3/Lexer+grammar+for+floating+point%2C+dot%2C+range%2C+time+specs >> >> >> >> You should be able to simplify the grammar here to just what you need. >> >> Jim >> >> 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 --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
