pygccxml-development

[pygccxml-development] Indexing suite in Py++ code

[Alexander E. <new...@st...>]

I got a compiler within visual studio:

python\detail\caller.hpp(199) : error C2027: Verwendung des undefinierten Typs 
"boost::python::detail::specify_a_return_value_policy_to_wrap_functions_returning<T>

In english "usage of a undefined type"

Does this have something todo with indexing suite? Can I tell py++ to generate 
other code?

Regards
Alexander

PS: I use a tailored boost.python 1.33.1

Re: [pygccxml-development] Indexing suite in Py++ code

[Roman Y. <rom...@gm...>]

On 5/15/07, Alexander Eisenhuth <new...@st...> wrote:
> I got a compiler within visual studio:
>
> python\detail\caller.hpp(199) : error C2027: Verwendung des undefinierten Typs
> "boost::python::detail::specify_a_return_value_policy_to_wrap_functions_returning<T>
>
> In english "usage of a undefined type"
>
> Does this have something todo with indexing suite? Can I tell py++ to generate
> other code?

Can you extract relevant piece of your code, that fails to compile?
Without seeing it I cannot answer your question.

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

Re: [pygccxml-development] Indexing suite in Py++ code

[Alexander E. <new...@st...>]

Roman Yakovenko schrieb:
> On 5/15/07, Alexander Eisenhuth <new...@st...> wrote:
>> I got a compiler within visual studio:
>>
>> python\detail\caller.hpp(199) : error C2027: Verwendung des undefinierten Typs
>> "boost::python::detail::specify_a_return_value_policy_to_wrap_functions_returning<T>
>>
>> In english "usage of a undefined type"
>>
>> Does this have something todo with indexing suite? Can I tell py++ to generate
>> other code?
> 
> Can you extract relevant piece of your code, that fails to compile?
> Without seeing it I cannot answer your question.
> 

I think this is the code.

{ //::ToolData_C::GetButtonMappingArray

     typedef ::std::vector<short unsigned int,std::allocator<short unsigned int> 
 > & ( ::ToolData_C::*GetButtonMappingArray_function_type )(  ) ;

     ToolData_C_exposer.def(
                 "GetButtonMappingArray"
                 , GetButtonMappingArray_function_type( 
&::ToolData_C::GetButtonMappingArray )
                     /* undefined call policies */ );

}

Re: [pygccxml-development] Indexing suite in Py++ code

[Roman Y. <rom...@gm...>]

On 5/15/07, Alexander Eisenhuth <new...@st...> wrote:
> I think this is the code.
>
> { //::ToolData_C::GetButtonMappingArray
>
>      typedef ::std::vector<short unsigned int,std::allocator<short unsigned int>
>  > & ( ::ToolData_C::*GetButtonMappingArray_function_type )(  ) ;
>
>      ToolData_C_exposer.def(
>                  "GetButtonMappingArray"
>                  , GetButtonMappingArray_function_type(
> &::ToolData_C::GetButtonMappingArray )
>                      /* undefined call policies */ );
>
> }

"GetButtonMappingArray" function returns reference to std::vector<...>, right?
Now you should tell Boost.Python how to manage memory of this object.

If this function returns reference to a member variable you can use
"return_internal_reference" call policy (
http://boost.org/libs/python/doc/v2/return_internal_reference.html )

Tutorials to Py++ call policies:
http://language-binding.net/pyplusplus/documentation/functions/call_policies.html

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

Re: [pygccxml-development] Indexing suite in Py++ code

[Alexander E. <new...@st...>]

Roman Yakovenko schrieb:
> 
> "GetButtonMappingArray" function returns reference to std::vector<...>, right?
> Now you should tell Boost.Python how to manage memory of this object.
> 
> If this function returns reference to a member variable you can use
> "return_internal_reference" call policy (
> http://boost.org/libs/python/doc/v2/return_internal_reference.html )
> 
> Tutorials to Py++ call policies:
> http://language-binding.net/pyplusplus/documentation/functions/call_policies.html
> 
Ok, i got it.