[antlr-interest] Empty complement set?

[Bart Kiers]

On Wed, Mar 31, 2010 at 11:20 AM, Anton Bychkov <bychkov.anton at gmail.com>wrote:

> Hi.
>
> The following grammar does not generate target code.
> It says "error(139): skipper.g: set complement is empty".
>

Try adding the lexer rules:

LParen : '(';
RParen : ')';

Regards,

Bart.