http://qs1969.pair.com?node_id=11104449


in reply to Re^4: About using rperl
in thread About using rperl

Interesting, so instead of converting the Perl code to a shared library, one could convert it to a .cpp source file instead which is then included into the main Perl script using gcc and Inline::CPP ? Alternatively, write a wrapper .cpp file that links with the generated shared library by giving a libs parameter to Inline::CPP ? It would still be great if someone could present a simple working (tutorial-type) example.. :)

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Re^6: About using rperl
by Anonymous Monk on Aug 15, 2019 at 06:56 UTC

    What?

    Inline::CPP writes xs modules for you , so you can call cpp functions from external cpp libraries without learning much xs

    It comes with "tutorial"

    RPerl converts Perl 5 source code into C++ source code

    RPerl then converts the c++ code it created from perl 5 source code, into xs module, using Inline::CPP

    There is no tutorial for explaining the RPerl way of wrapping an external library , ...GMPInteger_cpp.pm is as close to an example as you will find

    ...GMPInteger_cpp.pm is RPerl specific way of using Inline::CPP to call cpp functions from external cpp libraries ...

    Will_the_Chill has been here in a while

    Open an issue at https://github.com/wbraswell/rperl/issues and maybe negotiate :)

[reply]
      If rperl is just a layer on top of Inline::CPP, then what is the advantage over patching B::Deparse to convert Perl Snippets to CPP?

      For instance code like the following 

      sub func :cpp int {
  my int ($a,$b) = @_;
  return $a+$b
}

      [download]

      is (after predefining :cpp and int) legal perl5 syntax and B::Deparse gets all necessary details.

      sub func {
    (my int ($a, $b)) = @_;
    return $a + $b;
}
use attributes ('main', sub {
    (my int ($a, $b)) = @_;
    return $a + $b;
}
, 'cpp', 'int');

      [download]

      So whats the extra value of rperl?

      Cheers Rolf
      (addicted to the Perl Programming Language :)
      Wikisyntax for the Monastery FootballPerl is like chess, only without the dice

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        If rperl is just a layer on top of Inline::CPP, then what is the advantage over patching B::Deparse to convert Perl Snippets to CPP? ...So whats the extra value of rperl?

        You tell me?

        Is it not clear? I mean you must have at this point read everything there is to read about RPerl, the faq , docs , benchmarks / examples , jokes / original discussions about creating rperl...

        Old clues https://metacpan.org/source/RURBAN/B-C-1.57/ramblings/rperl.md

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