Re: [Boost-users] [Spirit] Equivalent of limit_d in spirit 2.x

Subject: Re: [Boost-users] [Spirit] Equivalent of limit_d in spirit 2.x
From: Hartmut Kaiser (hartmut.kaiser_at_[hidden])
Date: 2010-07-18 11:32:23

> Spirit 1.8 has a directive called limit_d which allowed to set the value
> range. Is there an equivalent for this in Spirit 2.x?
> 
> 
> There is not anything like this, but you can achieve the same with a
> semantic action:
> 
>     limit_d(min, max)[uint_p]
> 
> is equivalent to (when using qi::uint_, qi::_pass, and qi::_1):
> 
>     uint_[_pass = (min <= _1 && _1 <= max)]
> 
> Regards Hartmut
> 
> 
> Thanks for the quick reply!
> 
> Just out of curiosity: Where can I find this in the documentation? I
> missed the _pass somehow.

http://www.boost.org/doc/libs/1_43_0/libs/spirit/doc/html/spirit/qi/quick_re
ference/phoenix.html

Regards Hartmut

---------------
Meet me at BoostCon
www.boostcon.com