On Mon, Jan 18, 2010 at 04:21:45PM -0600, Michael Chen wrote:
> My grammar statement ends with a ';'. Even myself sometimes press the
> ';' multiple times. So definitely I need a way to silently ignore all
> redundant ';'. How to do it? Thanks.
Multiple ';'-s can be regarded as empty statements, so if your grammar
is:
stmtlist: /* empty */
| stmtlist ';'
| stmtlist stmt ';'
;
stmt: ....
then this will do it. I guess whitespace is insignificant in your
language, so the lexer eats it up, this way
; ; ; ;;; will be all empty statements with the above grammar snippet.
regards
Istvan
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