Proto for Boost mailing list page: Re: [proto] [proto-11] expression extension

Subject: Re: [proto] [proto-11] expression extension
From: Mathias Gaunard (mathias.gaunard_at_[hidden])
Date: 2012-06-06 02:10:36

On 03/06/2012 09:41, Eric Niebler wrote:
>
> Hey all, this is just an FYI. I've been hard at work at a ground-up
> redesign of proto for C++11. I've gotten far enough along that I know
> what expression extension will look like, so I thought I'd share. This
> should interest those who want finer control over how expressions in
> their domain are constructed. Without further ado:
>
>      template<typename Tag, typename Args>
>      struct MyExpr;
>
>      struct MyDomain
>        : proto::domain<MyDomain>
>      {
>          struct make_expr
>            : proto::make_custom_expr<MyExpr, MyDomain>
>          {};
>      };
>
>      template<typename Tag, typename Args>
>      struct MyExpr

Wouldn't it be more interesting for make_custom_expr to take a 
meta-function class?