Ah OK - many many thanks. Col
On 26 October 2010 14:10, Martijn Reuvers <[email protected]> wrote: > Hello Colin, > > You are missing a space in between. > > This should work: > > grammar test; > > someRule : DAY+ > ; > > DAY : > 'day' 's'? > ; > > Note that DAY is a lexer token. > > Cheers! > Martijn > > > > On Tue, Oct 26, 2010 at 1:34 PM, Colin Yates <[email protected]> > wrote: > > Hi, > > > > The user can type in '1 day' or '7 days'. I have the following rule > which > > matches: > > > > durationPeriod: ('day' | 'days') { // do something}; > > > > and this works fine. I initially tried: > > > > durationPeriod: 'day'('s')? { // do something}; > > > > but this never matched 'days'. > > > > Based on the '100 monkeys' reality I tried the following: > > > > durationPeriod: ('day''s')? { // do something}; > > and > > durationPeriod: ('day')('s')? { // do something}; > > > > but none of them matched 'days'. The exact error is [line 1:2 no viable > > alternative at input 'days''] > > > > What have I missed? The (incredibly useful!) Syntax Diagram in antlworks > > shows that the trailing 's' can be skipped, so I don't understand why it > > doesn't work. > > > > Many thanks, > > > > Col > > > > 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.
