// Copyright David Abrahams 2002. // Distributed under the Boost Software License, Version 1.0. (See // accompanying file LICENSE_1_0.txt or copy at // http://www.boost.org/LICENSE_1_0.txt) #ifndef TO_PYTHON_CONVERTER_DWA200221_HPP # define TO_PYTHON_CONVERTER_DWA200221_HPP # include <boost/python/detail/prefix.hpp> # include <boost/python/converter/registry.hpp> # include <boost/python/converter/as_to_python_function.hpp> #ifndef BOOST_PYTHON_NO_PY_SIGNATURES # include <boost/python/converter/pytype_function.hpp> #endif # include <boost/python/type_id.hpp> namespace boost { namespace python { #if 0 //get_pytype member detection namespace detail { typedef char yes_type; typedef struct {char a[2]; } no_type; template<PyTypeObject const * (*f)()> struct test_get_pytype1 { }; template<PyTypeObject * (*f)()> struct test_get_pytype2 { }; template<class T> yes_type tester(test_get_pytype1<&T::get_pytype>*); template<class T> yes_type tester(test_get_pytype2<&T::get_pytype>*); template<class T> no_type tester(...); template<class T> struct test_get_pytype_base { BOOST_STATIC_CONSTANT(bool, value= (sizeof(detail::tester<T>(0)) == sizeof(yes_type))); }; template<class T> struct test_get_pytype : boost::mpl::bool_<test_get_pytype_base<T>::value> { }; } #endif template < class T, class Conversion, bool has_get_pytype=false > struct to_python_converter { #ifndef BOOST_PYTHON_NO_PY_SIGNATURES #if 0 //defined _MSC_VER && _MSC_VER >=1310 //probably other compilers could come here as well typedef typename detail::test_get_pytype<Conversion> HasGetPytype; #else typedef boost::mpl::bool_<has_get_pytype> HasGetPytype; #endif static PyTypeObject const* get_pytype_1(boost::mpl::true_ *) { return Conversion::get_pytype(); } static PyTypeObject const* get_pytype_1(boost::mpl::false_ *) { return 0; } static PyTypeObject const* get_pytype_impl() { return get_pytype_1((HasGetPytype*)0); } #endif to_python_converter(); }; // // implementation // template <class T, class Conversion ,bool has_get_pytype> to_python_converter<T,Conversion, has_get_pytype>::to_python_converter() { typedef converter::as_to_python_function< T, Conversion > normalized; converter::registry::insert( &normalized::convert , type_id<T>() #ifndef BOOST_PYTHON_NO_PY_SIGNATURES , &get_pytype_impl #endif ); } }} // namespace boost::python #endif // TO_PYTHON_CONVERTER_DWA200221_HPP