// Copyright David Abrahams 2002.
// Copyright Stefan Seefeld 2016.
// 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 boost_python_to_python_value_hpp_
#define boost_python_to_python_value_hpp_
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
namespace boost { namespace python {
namespace detail
{
#ifndef BOOST_PYTHON_NO_PY_SIGNATURES
template
struct object_manager_get_pytype
{
template
static PyTypeObject const* get( U& (*)() =0)
{
return converter::object_manager_traits::get_pytype();
}
};
template <>
struct object_manager_get_pytype
{
template
static PyTypeObject const* get( U const& (*)() =0)
{
return converter::object_manager_traits::get_pytype();
}
};
#endif
template
struct object_manager_to_python_value
{
typedef typename value_arg::type argument_type;
PyObject* operator()(argument_type) const;
#ifndef BOOST_PYTHON_NO_PY_SIGNATURES
typedef boost::mpl::bool_::value> is_t_handle;
typedef boost::detail::indirect_traits::is_reference_to_const is_t_const;
PyTypeObject const* get_pytype() const {
return get_pytype_aux((is_t_handle*)0);
}
inline static PyTypeObject const* get_pytype_aux(mpl::true_*) {return converter::object_manager_traits::get_pytype();}
inline static PyTypeObject const* get_pytype_aux(mpl::false_* )
{
return object_manager_get_pytype<:value>::get((T(*)())0);
}
#endif
// This information helps make_getter() decide whether to try to
// return an internal reference or not. I don't like it much,
// but it will have to serve for now.
BOOST_STATIC_CONSTANT(bool, uses_registry = false);
};
template
struct registry_to_python_value
{
typedef typename value_arg::type argument_type;
PyObject* operator()(argument_type) const;
#ifndef BOOST_PYTHON_NO_PY_SIGNATURES
PyTypeObject const* get_pytype() const {return converter::registered::converters.to_python_target_type();}
#endif
// This information helps make_getter() decide whether to try to
// return an internal reference or not. I don't like it much,
// but it will have to serve for now.
BOOST_STATIC_CONSTANT(bool, uses_registry = true);
};
template
struct shared_ptr_to_python_value
{
typedef typename value_arg::type argument_type;
PyObject* operator()(argument_type) const;
#ifndef BOOST_PYTHON_NO_PY_SIGNATURES
PyTypeObject const* get_pytype() const {return get_pytype((boost::type*)0);}
#endif
// This information helps make_getter() decide whether to try to
// return an internal reference or not. I don't like it much,
// but it will have to serve for now.
BOOST_STATIC_CONSTANT(bool, uses_registry = false);
private:
#ifndef BOOST_PYTHON_NO_PY_SIGNATURES
template
PyTypeObject const* get_pytype(boost::type &> *) const {return converter::registered::converters.to_python_target_type();}
template
PyTypeObject const* get_pytype(boost::type &> *) const {return converter::registered::converters.to_python_target_type();}
# if !defined(BOOST_NO_CXX11_SMART_PTR)
template
PyTypeObject const* get_pytype(boost::type<:shared_ptr> &> *) const {return converter::registered::converters.to_python_target_type();}
template
PyTypeObject const* get_pytype(boost::type &> *) const {return converter::registered::converters.to_python_target_type();}
# endif
#endif
};
}
template
struct to_python_value
: mpl::if_<
detail::value_is_shared_ptr
, detail::shared_ptr_to_python_value
, typename mpl::if_<
mpl::or_<
converter::is_object_manager
, converter::is_reference_to_object_manager
>
, detail::object_manager_to_python_value
, detail::registry_to_python_value
>::type
>::type
{
};
//
// implementation
//
namespace detail
{
template
inline PyObject* registry_to_python_value::operator()(argument_type x) const
{
return converter::registered::converters.to_python(&x);
}
template
inline PyObject* object_manager_to_python_value::operator()(argument_type x) const
{
return python::upcast(
python::xincref(
get_managed_object(x, tag))
);
}
template
inline PyObject* shared_ptr_to_python_value::operator()(argument_type x) const
{
return converter::shared_ptr_to_python(x);
}
}
}} // namespace boost::python
#endif