python/include/boost/python/detail/wrapper_base.hpp at python313 · boostorg/python · GitHub

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// 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/python/detail/type_traits.hpp>

namespace boost { namespace python {

class override;

namespace detail

{

class wrapper_base;

namespace wrapper_base_ // ADL disabler

{

inline PyObject* get_owner(wrapper_base const volatile& w);

inline PyObject*

owner_impl(void const volatile* /*x*/, detail::false_)

{

return 0;

}

template <class T>

inline PyObject*

owner_impl(T const volatile* x, detail::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, detail::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

python/include/boost/python/detail/wrapper_base.hpp at python313 · boostorg/python · GitHub

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