[antlr-interest] How to handle? Synthetic token?

[denstar]

On Mon, Dec 20, 2010 at 10:56 PM, James Ladd wrote:
>
> Maybe I have answered my own question:
>
> temporaries
>    :       '||'
>    |       '|' temporaryVariables '|'
>    |       '|' temporaryVariables errorYouMissedClosingPipe
>    ;
>
> <snip>
>
> errorYouMissedClosingPipe
>    :    ~('|' | NAME)
>    ;
>
> When I use the NOT token I get the correct parsing.
> For example, this is not correct:    | foo bar [
>
> *note: the things that are not '|' or NAME need to be matched as well.
> So in the example I gave '[' has to be a matched token.
>
> My question not is:   Is this an ok approach / thing to do?

I'm far from an expert on ANTLR, but I believe this is sorta taken
care of for you.

See: http://www.antlr.org/wiki/display/ANTLR3/FAQ+-+Error+handling

For some examples of ways to handle this that aren't as fragile.

:Den

-- 
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lacks opportunity.
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