AW: SIP translate Union

[Marian Thomsen]

Thank you for the advice!

Unfortunately I cant get a simple example to work.
I have a simple union in the header test_union.h


union {
    int test1;
    int test2;
} u;

And this is the best I got so far in the .sip file:


struct union{

%TypeHeaderCode
#include <test_union.h>
%End

    int *test1 {
    %GetCode
        sipPy = PyLong_FromLongLong(sipCpp->test1)
        if(sipPy == NULL)
            sipPy = NULL;
    %End
    %SetCode
        if (PyLong_Check(sipPy))
            sipCpp->test1;
        else
            sipErr = 1;
    %End
    };
    int *test2 {
    %GetCode
        sipPy = PyLong_FromLongLong(sipCpp->test2);
        if(sipPy == NULL)
            sipPy = NULL;
    %End
    %SetCode
        if (PyLong_Check(sipPy))
            sipCpp->test2;
        else
            sipErr = 1;
    %End
    };
}u;

I get a syntax error in the last line and have tried to write it so that sip would understand it, but also with something like:


typedef struct union union;
union u{ ... };

I got no luck so far. Am I completly wrong?

Some advice would be appreciated

Thank you!

M.T.
________________________________
Von: Phil Thompson <phil at riverbankcomputing.com>
Gesendet: Montag, 23. November 2020 11:48
An: Marian Thomsen <marian.th at outlook.de>
Cc: pyqt at riverbankcomputing.com <pyqt at riverbankcomputing.com>
Betreff: Re: SIP translate Union

On 23/11/2020 10:40, Marian Thomsen wrote:
> Hello,
>
> I’m trying to use SIP to translate an union. Just started using SIP
> and because unions are not supported directly I cant find a way to
> translate them.
> What would be a good approach?
> I’m trying to use %MappedType but cant get it to work.
>
> A simple example would be really appreciated!

The most direct translation would be to wrap it as a struct and
implement %GetCode and %SetCode for each of the union elements.

Phil
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