PythonBoostOptional.h

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// PythonBoostOptional.h:
// ----------------------
//

#ifndef __PYIPSDKBASE_PYTHONBOOSTOPTIONAL_H__
#define __PYIPSDKBASE_PYTHONBOOSTOPTIONAL_H__

#include <boost/python/class.hpp>
#include <boost/python/object.hpp>
#include <boost/python/make_constructor.hpp>
#include <boost/optional.hpp>

namespace ipsdk {
namespace python {


template<typename T>
inline void
set(boost::optional<T>& o, T x)
{
    o = x;
}
  
template<typename T>
inline boost::python::object
get(boost::optional<T>& o)
{
    if (o.is_initialized() == true)
        return boost::python::object(o.get());
    else
        return boost::python::object();
}

template<typename T>
inline boost::optional<T>*
optional_from_object (boost::python::object& o)
{
    return new boost::optional<T>;
}

template<typename T>
static void
exposeOptional(const char* name)
{
    boost::python::class_<boost::optional<T> >(name, boost::python::init<T>())
        .def ("__init__", boost::python::make_constructor(optional_from_object<T>))
        .def ("set", &set<T>)
        .def ("get", &get<T>)
        .def ("is_initialized", &boost::optional<T>::is_initialized)
    ;
}


} // end of namespace python
} // end of namespace ipsdk

#endif // __PYIPSDKBASE_PYTHONBOOSTOPTIONAL_H__