Sam Harwell schrieb:
> Based on the current grammar, this rule is not a set:
Do you really want the "not" there? Otherwise the second example has a
double negation.
Johannes
>
>
>
> NUMBER : '0'..'9'
>
> | 'A'..'Z'
>
> | '_'
>
> ;
>
>
>
> But the following is not:
>
>
>
> NUMBER : '0'..'9'
>
> | 'A'..'Z'
>
> | ('_')
>
> ;
>
>
>
> By modifying testBlockAsSet, testSetElement, and testSetRule to return
> [int numAlts], you can keep track of more allowable sets, including
> those that have a fragment rule as an element. Grammar.isValidSet() then
> returns true if no exception is thrown and the returned number of alts
> is greater than 1.
>
>
>
> Sam
>
>
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