[antlr-interest] Value passed to String based rule parameter has spaces inserted after commas.

[Sam Ellis]

On 21/7/07 13:55, "Benjamin Niemann" <pink at odahoda.de> wrote:
> There not much ANTLR can do without knowing how strings, types,
> comments, ... look like in the target language - that it would need a
> complete grammar of each target language, which would make things way more
> difficult to implement.

It makes sense, though I guess I'd assumed it might be doing some minimal
braces/quotes matching or allow characters to be escaped.


> So finally: to work around this limitation, use something like that:
> 
> bowl
>     : { f = "apple,orange"; }
>       fruit[f]
>     ;

I have a lot of such rule parameters... As I'm splitting the string up into
an array inside the rule action anyway the easiest for me was to split on
comma+space instead of just comma. Really, of course, I should look at
passing in an array and avoid the run-time hit of splitting these strings at
all, but that's an enhancement for another day... Thanks for the
suggestions.


-- 
Sam Ellis, RVDK Team Leader,
DevSys Product Engineering Group,          Tel: +44 (0) 1223 400516
ARM Ltd., 110 Fulbourn Road,               Fax: +44 (0) 1223 400887
Cambridge, CB1 9NJ                         mailto:Sam.Ellis at arm.com



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