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Subject: [Boost-users] [Proto] Using mpl::count as proto::transform
From: Joel Falcou (joel.falcou_at_[hidden])
Date: 2009-01-03 16:27:46
I have a grammar with 3 kind of terminal : A,B and C.
I want to have a transform that returns a mpl::int_ which is equal to
the number of B terminal that appear
in expression like :
A(B,B,C,B,C ..)
the grammar part for matching this is currently :
when< function< vargarg<my_grammar> >
, mpl::count< _, terminal<B> >()
>
alas this always return 0 and so does :
when< function< vargarg<my_grammar> >
, mpl::count< _, terminal<B>::type >()
>
as well as the same using flatten.
What do I do wrong ?
-- ___________________________________________ Joel Falcou - Assistant Professor PARALL Team - LRI - Universite Paris Sud XI Tel : (+33)1 69 15 66 35
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