[antlr-interest] Grammar handling of whitespaces

[Shawn Poulson]

Hello all,

I've had success so far with generating my grammar for my C# target,
with help from several individuals here.  One of the tips I've used is
to use a lexer rule to skip whitespaces using a rule like:

WS : (' '|'\r'|'\t'|'\n') { $channel=HIDDEN; }

This is very helpful for most parser rules, so I don't have to
explicitly put whitespaces throughout my parser rules.  But, there are
times where I don't want whitespaces between certain elements.  Is
there a way to handle this?

Thanks.

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Shawn Poulson
spoulson at explodingcoder.com