FM / object

/usr/include/boost/python/object

Name	Size	Mode	Actions
add_to_namespace.hpp	780	0644	edit dl rm
class.hpp	2112	0644	edit dl rm
class_detail.hpp	634	0644	edit dl rm
class_metadata.hpp	9096	0644	edit dl rm
class_wrapper.hpp	1616	0644	edit dl rm
enum_base.hpp	1095	0644	edit dl rm
find_instance.hpp	844	0644	edit dl rm
forward.hpp	2297	0644	edit dl rm
function.hpp	2259	0644	edit dl rm
function_doc_signature.hpp	1514	0644	edit dl rm
function_handle.hpp	1439	0644	edit dl rm
function_object.hpp	1418	0644	edit dl rm
inheritance.hpp	3542	0644	edit dl rm
inheritance_query.hpp	617	0644	edit dl rm
instance.hpp	1282	0644	edit dl rm
iterator.hpp	7139	0644	edit dl rm
iterator_core.hpp	545	0644	edit dl rm
life_support.hpp	530	0644	edit dl rm
make_holder.hpp	3526	0644	edit dl rm
make_instance.hpp	2501	0644	edit dl rm
make_ptr_instance.hpp	2292	0644	edit dl rm
pickle_support.hpp	3185	0644	edit dl rm
pointer_holder.hpp	6523	0644	edit dl rm
py_function.hpp	4509	0644	edit dl rm
stl_iterator_core.hpp	851	0644	edit dl rm
value_holder.hpp	5008	0644	edit dl rm
value_holder_fwd.hpp	522	0644	edit dl rm

Edit: /usr/include/boost/python/object/forward.hpp (2297B)

# include <boost/mpl/if.hpp>
# include <boost/ref.hpp>
# include <boost/python/detail/value_arg.hpp>
# include <boost/python/detail/type_traits.hpp>
# include <boost/python/detail/copy_ctor_mutates_rhs.hpp>
# include <boost/mpl/or.hpp>

namespace boost { namespace python { namespace objects {

// Very much like boost::reference_wrapper<T>, except that in this
// case T can be a reference already without causing a
// reference-to-reference error.
template <class T>
struct reference_to_value
{
    typedef typename boost::python::detail::add_lvalue_reference<typename
        boost::python::detail::add_const<T>::type>::type reference;
    
    reference_to_value(reference x) : m_value(x) {}
    reference get() const { return m_value; }
 private:
    reference m_value;
};

// A little metaprogram which selects the type to pass through an
// intermediate forwarding function when the destination argument type
// is T.
template <class T>
struct forward
    : mpl::if_<
          mpl::or_<python::detail::copy_ctor_mutates_rhs<T>, boost::python::detail::is_scalar<T> >
        , T
        , reference_to_value<T>
      >
{
};

template<typename T>
struct unforward
{
    typedef typename unwrap_reference<T>::type& type;
};

template<typename T>
struct unforward<reference_to_value<T> >
{
    typedef T type;
};

template <typename T>
struct unforward_cref
  : python::detail::value_arg<
        typename unwrap_reference<T>::type
    >
{
};

template<typename T>
struct unforward_cref<reference_to_value<T> >
  : boost::python::detail::add_lvalue_reference<typename boost::python::detail::add_const<T>::type>
{
};

template <class T>
typename reference_to_value<T>::reference
do_unforward(reference_to_value<T> const& x, int)
{
    return x.get();
}

template <class T>
typename reference_wrapper<T>::type&
do_unforward(reference_wrapper<T> const& x, int)
{
    return x.get();
}

template <class T>
T const& do_unforward(T const& x, ...)
{
    return x;
}

}}} // namespace boost::python::objects

#endif // FORWARD_DWA20011215_HPP

// Copyright David Abrahams 2001. // 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 FORWARD_DWA20011215_HPP # define FORWARD_DWA20011215_HPP # include # include # include # include # include # include namespace boost { namespace python { namespace objects { // Very much like boost::reference_wrapper, except that in this // case T can be a reference already without causing a // reference-to-reference error. template struct reference_to_value { typedef typename boost::python::detail::add_lvalue_reference::type>::type reference; reference_to_value(reference x) : m_value(x) {} reference get() const { return m_value; } private: reference m_value; }; // A little metaprogram which selects the type to pass through an // intermediate forwarding function when the destination argument type // is T. template struct forward : mpl::if_< mpl::or_, boost::python::detail::is_scalar > , T , reference_to_value > { }; template struct unforward { typedef typename unwrap_reference::type& type; }; template struct unforward > { typedef T type; }; template struct unforward_cref : python::detail::value_arg< typename unwrap_reference::type > { }; template struct unforward_cref > : boost::python::detail::add_lvalue_reference::type> { }; template typename reference_to_value::reference do_unforward(reference_to_value const& x, int) { return x.get(); } template typename reference_wrapper::type& do_unforward(reference_wrapper const& x, int) { return x.get(); } template T const& do_unforward(T const& x, ...) { return x; } }}} // namespace boost::python::objects #endif // FORWARD_DWA20011215_HPP