[C++-sig] Header error in boost/python/object/make_holder?

[Roman Yakovenko]

On 10/15/07, Thomas Hauk <thauk at novuscom.net> wrote:
>
> On Oct 15, 2007, at 12:43 PM, David Abrahams wrote:
> > 9 times out of 10, preparing a minimal example reveals the actual
> > problem to the person asking the question ;-)
>
> Speaking of which, and I'm changing the subject rather selfishly, but
> I still haven't had an answer about what the bindings to:
>
>         struct Foo
>         {
>                 unsigned char data[4];
>         };
>
> should be... and I don't think that type of question to this
> newsgroup gets any more minimal than that. :)
>


Next code was generated by Py++, may be it is not optimal but it does the
work. __array_1.pypp.hpp file is attached



#include "boost/python.hpp"

#include "__array_1.pypp.hpp"

#include "1.hpp"

namespace bp = boost::python;

struct Foo_wrapper : Foo, bp::wrapper< Foo > {

    Foo_wrapper(Foo const & arg )
    : Foo( arg )
      , bp::wrapper< Foo >(){
        // copy constructor

    }

    Foo_wrapper()
    : Foo()
      , bp::wrapper< Foo >(){
        // null constructor

    }

    static pyplusplus::containers::static_sized::array_1_t< unsigned char,
4>
    pyplusplus_data_wrapper( ::Foo & inst ){
        return pyplusplus::containers::static_sized::array_1_t< unsigned
char, 4>( inst.data );
    }

};

BOOST_PYTHON_MODULE(pyplusplus){
    { //::Foo
        typedef bp::class_< Foo_wrapper > Foo_exposer_t;
        Foo_exposer_t Foo_exposer = Foo_exposer_t( "Foo" );
        bp::scope Foo_scope( Foo_exposer );
        pyplusplus::containers::static_sized::register_array_1< unsigned
char, 4 >( "__array_1_unsigned_char_4" );
        { //Foo::data [variable], type=unsigned char[4]

            typedef pyplusplus::containers::static_sized::array_1_t<
unsigned char, 4> ( *array_wrapper_creator )( ::Foo & );

            Foo_exposer.add_property( "data"
                , bp::make_function(
array_wrapper_creator(&Foo_wrapper::pyplusplus_data_wrapper)
                                    , bp::with_custodian_and_ward_postcall<
0, 1 >() ) );
        }
    }
}


-- 
Roman Yakovenko
C++ Python language binding
http://www.language-binding.net/
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