Thanks。 2011/2/17 Jim Idle <[email protected]>
> You don't. You add a counter and parse everything that comes up, then you > issue a semantic error saying that there are too many inputStatements. > Always push the errors as far down the chain as you can as they gain more > context and are therefore clearer to the end user. > > Jim > > > -----Original Message----- > > From: [email protected] [mailto:antlr-interest- > > [email protected]] On Behalf Of devdoer bird > > Sent: Wednesday, February 16, 2011 9:05 PM > > To: antlr-interest Interest > > Subject: [antlr-interest] How can I make sure there's one such rule in > > the input ? > > > > HI: > > > > I have the grammar: > > > > statements:(inputStatement|schemaStatement|filtersStatement|COMMENT)* > > EOF; > > > > > > As you see ,it will match as many inputStatements as there are in the > > input file. > > > > > > How can change the grammar to make sure there is only one > > inputStatment in the input file? > > > > > > Thanks. > > > > 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 > 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.
