Mercurial > hg > vamp-build-and-test
diff DEPENDENCIES/generic/include/boost/python/to_python_value.hpp @ 16:2665513ce2d3
Add boost headers
author | Chris Cannam |
---|---|
date | Tue, 05 Aug 2014 11:11:38 +0100 |
parents | |
children |
line wrap: on
line diff
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/DEPENDENCIES/generic/include/boost/python/to_python_value.hpp Tue Aug 05 11:11:38 2014 +0100 @@ -0,0 +1,176 @@ +// 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_VALUE_DWA200221_HPP +# define TO_PYTHON_VALUE_DWA200221_HPP + +# include <boost/python/detail/prefix.hpp> + +# include <boost/python/refcount.hpp> +# include <boost/python/tag.hpp> +# include <boost/python/handle.hpp> + +# include <boost/python/converter/registry.hpp> +# include <boost/python/converter/registered.hpp> +# include <boost/python/converter/builtin_converters.hpp> +# include <boost/python/converter/object_manager.hpp> +# include <boost/python/converter/shared_ptr_to_python.hpp> + +# include <boost/python/detail/value_is_shared_ptr.hpp> +# include <boost/python/detail/value_arg.hpp> + +# include <boost/type_traits/transform_traits.hpp> + +# include <boost/mpl/if.hpp> +# include <boost/mpl/or.hpp> +# include <boost/type_traits/is_const.hpp> + +namespace boost { namespace python { + +namespace detail +{ +#ifndef BOOST_PYTHON_NO_PY_SIGNATURES + +template <bool is_const_ref> +struct object_manager_get_pytype +{ + template <class U> + static PyTypeObject const* get( U& (*)() =0) + { + return converter::object_manager_traits<U>::get_pytype(); + } +}; + +template <> +struct object_manager_get_pytype<true> +{ + template <class U> + static PyTypeObject const* get( U const& (*)() =0) + { + return converter::object_manager_traits<U>::get_pytype(); + } +}; + +#endif + + template <class T> + struct object_manager_to_python_value + { + typedef typename value_arg<T>::type argument_type; + + PyObject* operator()(argument_type) const; +#ifndef BOOST_PYTHON_NO_PY_SIGNATURES + typedef boost::mpl::bool_<is_handle<T>::value> is_t_handle; + typedef boost::detail::indirect_traits::is_reference_to_const<T> 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<T>::get_pytype();} + + inline static PyTypeObject const* get_pytype_aux(mpl::false_* ) + { + return object_manager_get_pytype<is_t_const::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 <class T> + struct registry_to_python_value + { + typedef typename value_arg<T>::type argument_type; + + PyObject* operator()(argument_type) const; +#ifndef BOOST_PYTHON_NO_PY_SIGNATURES + PyTypeObject const* get_pytype() const {return converter::registered<T>::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 <class T> + struct shared_ptr_to_python_value + { + typedef typename value_arg<T>::type argument_type; + + PyObject* operator()(argument_type) const; +#ifndef BOOST_PYTHON_NO_PY_SIGNATURES + PyTypeObject const* get_pytype() const {return get_pytype((boost::type<argument_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 <class U> + PyTypeObject const* get_pytype(boost::type<shared_ptr<U> &> *) const {return converter::registered<U>::converters.to_python_target_type();} + template <class U> + PyTypeObject const* get_pytype(boost::type<const shared_ptr<U> &> *) const {return converter::registered<U>::converters.to_python_target_type();} +#endif + }; +} + +template <class T> +struct to_python_value + : mpl::if_< + detail::value_is_shared_ptr<T> + , detail::shared_ptr_to_python_value<T> + , typename mpl::if_< + mpl::or_< + converter::is_object_manager<T> + , converter::is_reference_to_object_manager<T> + > + , detail::object_manager_to_python_value<T> + , detail::registry_to_python_value<T> + >::type + >::type +{ +}; + +// +// implementation +// +namespace detail +{ + template <class T> + inline PyObject* registry_to_python_value<T>::operator()(argument_type x) const + { + typedef converter::registered<argument_type> r; +# if BOOST_WORKAROUND(__GNUC__, < 3) + // suppresses an ICE, somehow + (void)r::converters; +# endif + return converter::registered<argument_type>::converters.to_python(&x); + } + + template <class T> + inline PyObject* object_manager_to_python_value<T>::operator()(argument_type x) const + { + return python::upcast<PyObject>( + python::xincref( + get_managed_object(x, tag)) + ); + } + + template <class T> + inline PyObject* shared_ptr_to_python_value<T>::operator()(argument_type x) const + { + return converter::shared_ptr_to_python(x); + } +} + +}} // namespace boost::python + +#endif // TO_PYTHON_VALUE_DWA200221_HPP