[Boost-users] [spirit] alpha numeric characters

Subject: [Boost-users] [spirit] alpha numeric characters
From: Ovanes Markarian (om_boost_at_[hidden])
Date: 2009-12-05 19:33:07

Hello *,

I currently use boost 1.36 to parse some input line like a->b->c-> ...

I thought a, b, c can be strings containing letters or digits. Until now I
thought that this defines alpha numeric characters. But when using the
spirit rule:

+((+alnum_p)[some_callback_func] >> str_p("->"))

the some_callback_func gets as input the whole input sequence
(a->b->c->...). Furthermore, it than gets called for b->c->... and than
c->d->...

Maybe my rule is wrong, but I can't get where.

Thanks for advice,
Ovanes