Re: [Boost-users] [Proto] How to access the grammar of an expression?

Subject: Re: [Boost-users] [Proto] How to access the grammar of an expression?
From: Roland Bock (rbock_at_[hidden])
Date: 2010-09-24 10:18:31

On 09/24/2010 02:33 PM, Roland Bock wrote:
> Hi,
>
> ist there a way to access the grammar that was used to construct an 
> expression?
>
> I have defined a metafunction
>
> template<class Left, class Right>
> struct grammar_less: mpl::false_ {};
>
> which has specialization for some grammar combinations.
>
> Now I want to define a function that can take two arguments so that
>
> child0.grammar < child1.grammar
>
>
> Any idea how to do that? My test-code is attached.
>
>
> Regards,
>
> Roland
>    
Hi,

since I know the structure of the types in question, I can circumvent 
the problem as shown in the attached code. Not nice, but I could 
probably use it.

Regards,

Roland