Proto for Boost mailing list page: Re: [proto] How to customize an expression in an EDSL , so as to make a deep copy of it?

Subject: Re: [proto] How to customize an expression in an EDSL , so as to make a deep copy of it?
From: 伊藤 (itoh.masakatsu_at_[hidden])
Date: 2016-01-14 21:18:05

Hi Bart and Boost.Proto community,

Thanks to you, I made some progress on my mini-EDSL and
have given a poster presentation at the small symposium
of computer science in Japan to discuss about DSLs for
scientific simulation.

Although my EDSL still has lots of template errors, I hope to
post its error-free version to GitHub before long.

Best regards,
Masa

Masakatsu ITO

On 2015年12月26日 07:11, Bart Janssens wrote:
> On Fri, Dec 25, 2015 at 2:07 PM Masakatsu ITO(伊藤) 
> <itoh.masakatsu_at_[hidden] <mailto:itoh.masakatsu_at_[hidden]>> wrote:
>
>
>     Actually I tried to adapt my DiffereneceOperator type to Proto
>     as Proto Users Guide explains in "Adapting Existing Types to Proto".
>
>     http://www.boost.org/doc/libs/1_57_0/doc/html/proto/users_guide.html#boost_proto.users_guide.front_end.define_operators
>
>
> I think this didn't work because the macro doesn't overload the 
> function call operator.
>
>     And I wondered when it is necessary to write a code such like
>
>     calculator<  proto::terminal<  placeholder<0>  >::type  >  const  _1;
>
>
>     in |"The extends< > Expression Wrapper".
>
>     http://www.boost.org/doc/libs/1_57_0/doc/html/proto/users_guide.html#boost_proto.users_guide.front_end.customizing_expressions_in_your_domain.extends
>     |||||
>     <http://www.boost.org/doc/libs/1_57_0/doc/html/proto/users_guide.html#boost_proto.users_guide.front_end.customizing_expressions_in_your_domain.extends>
>
>
> This is needed to make sure the terminal is part of the calculator 
> domain, if you leave out the calculator<> part you just get an 
> expression in the default domain.
>
>     Wishing you a merry Christmas,
>     Masa
>
>
> Merry Christmas to you too!
>
> Bart
>
>
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