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Charles Wilt wrote:
I'm not an expert ( it's been a while since my formal languages course
:) but recursive decent parsing provides an answer to your OQ in the
following manner:
At the point that the parser is looking at /*ALL or /*PART1 the parser
wouldn't be looking for a comment.
Which was exactly my point.
Although I admit that for this to work, your scanner needs to be smart
enough to know when it is or is not acceptable to return a "comment"
token to the parser. Not that this is terribly difficult; you could
simply pass a "comment allowed" flag as a parameter, assuming that your
parser calls your scanner directly (which it presumably does, unless you
have some sort of pre-tokenization pass).
Welcome to compiler construction 101. ;-) (And it's been about a
quarter-century for me, but only a few years since I had to design one,
and only a few weeks since I had to maintain one.)
--
JHHL
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