// Copyright David Abrahams 2004. 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 WRAPPER_BASE_DWA2004722_HPP | |
# define WRAPPER_BASE_DWA2004722_HPP | |
# include <boost/python/detail/prefix.hpp> | |
# include <boost/type_traits/is_polymorphic.hpp> | |
# include <boost/mpl/bool.hpp> | |
namespace boost { namespace python { | |
class override; | |
namespace detail | |
{ | |
class BOOST_PYTHON_DECL_FORWARD wrapper_base; | |
namespace wrapper_base_ // ADL disabler | |
{ | |
inline PyObject* get_owner(wrapper_base const volatile& w); | |
inline PyObject* | |
owner_impl(void const volatile* /*x*/, mpl::false_) | |
{ | |
return 0; | |
} | |
template <class T> | |
inline PyObject* | |
owner_impl(T const volatile* x, mpl::true_); | |
template <class T> | |
inline PyObject* | |
owner(T const volatile* x) | |
{ | |
return wrapper_base_::owner_impl(x,is_polymorphic<T>()); | |
} | |
} | |
class BOOST_PYTHON_DECL wrapper_base | |
{ | |
friend void initialize_wrapper(PyObject* self, wrapper_base* w); | |
friend PyObject* wrapper_base_::get_owner(wrapper_base const volatile& w); | |
protected: | |
wrapper_base() : m_self(0) {} | |
override get_override( | |
char const* name, PyTypeObject* class_object) const; | |
private: | |
void detach(); | |
private: | |
PyObject* m_self; | |
}; | |
namespace wrapper_base_ // ADL disabler | |
{ | |
template <class T> | |
inline PyObject* | |
owner_impl(T const volatile* x, mpl::true_) | |
{ | |
if (wrapper_base const volatile* w = dynamic_cast<wrapper_base const volatile*>(x)) | |
{ | |
return wrapper_base_::get_owner(*w); | |
} | |
return 0; | |
} | |
inline PyObject* get_owner(wrapper_base const volatile& w) | |
{ | |
return w.m_self; | |
} | |
} | |
inline void initialize_wrapper(PyObject* self, wrapper_base* w) | |
{ | |
w->m_self = self; | |
} | |
inline void initialize_wrapper(PyObject* /*self*/, ...) {} | |
} // namespace detail | |
}} // namespace boost::python | |
#endif // WRAPPER_BASE_DWA2004722_HPP |