Re: [boost] Interactive metaprogramming shells

Subject: Re: [boost] Interactive metaprogramming shells
From: Hartmut Kaiser (hartmut.kaiser_at_[hidden])
Date: 2014-01-26 19:08:58

> >>> I've built interactive shells for preprocessor and template
> >>> metaprogramming. I've been using them for development and debugging
> >>> of metaprograms and I think Boost developers could also find them
> useful.
> >>>
> >>> You can type in (metaprogramming) expressions which get evaluated
> >>> and the result is displayed immediately. For example you can type
> >>>
> >>>         boost::mpl::push_front<boost::mpl::vector<int, char>,
> >>> double>::type
> >>>
> >>> and you get
> >>>
> >>>         boost_::mpl::vector<double, int, char>
> >>>
> >>> as the result (the boost_ namespace is used because there are some
> >>> tricks there to make the output more readable).
> >>>
> >>>
> >>> As an example for the preprocessor shell you can type
> >>>
> >>>         BOOST_PP_REPEAT(3, foo BOOST_PP_TUPLE_EAT(3), ~)
> >>>
> >>> and you get
> >>>
> >>>         foo foo foo
> >>>
> >>> as the result.
> >>>
> >>>
> >>> The tools are based on the Boost.Wave library and Clang. You can get
> >>> them here:
> >>>     Preshell for preprocessor: https://github.com/sabel83/preshell
> >>>     Metashell for template metaprograms:
> >>> https://github.com/sabel83/metashell
> >>>
> >>> You can also try them from your browser here:
> >>> http://abel.web.elte.hu/shell
> >
> > That's nice tools! However, the wave tool itself already supports a
> > REPL interface for preprocessing, just start it without arguments...
> 
> Is there any documentation for this interface ? I could not find anything
> about it in "The Wave Driver" documentation.

What documentation would you like to see? It's as simple as starting the
driver without command line arguments.

Regards Hartmut
---------------
http://boost-spirit.com
http://stellar.cct.lsu.edu