[C++-sig] Pyste and STL types

[Nicodemus]

----- Original Message -----
From: "Patrick Hartling" <patrick at vrac.iastate.edu>
To: <c++-sig at python.org>
Sent: Tuesday, March 18, 2003 11:23 AM
Subject: Re: [C++-sig] Pyste and STL types

> Thanks very much, Nicodemus, things are much improved now.
>
> Based on further usage, I have a question: are unions supported?  I am
> not a Python guru, but I don't think that there is a union concept in
> Python.  In that case, it would make sense if Pyste ran into a problem
> with a class containing a public data member that is a union type.  I
> would grant that the C++ class I have in mind should probably
> encapsulate its data better, but in the meantime, should exclude() work
> to keep the union data member out of the mix?  With the attached .h and
> .pyste files, I get this stack trace:
> <snip trace>
> AttributeError: 'Declaration' object has no attribute 'visibility'
>
> My environment is the same as described above.
>
>   -Patrick

Hi Patrick,

It seems that Boost.Python doesn't support unions. The following code fails
to compile:

union test
{
    int t1;
    short s1;
    short s2;
};

// Module
======================================================================
BOOST_PYTHON_MODULE(_3d)
{
    class_<test>("test")
        .def_readwrite("t1", &test::t1)
        .def_readwrite("s1", &test::s1)
        .def_readwrite("s2", &test::s2)
    ;
}