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: Roland Bock (rbock_at_[hidden])
Date: 2010-07-18 11:27:11

Hartmut Kaiser wrote:
>> 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.

Regards,

Roland