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// Boost.TypeErasure library
//
// Copyright 2011 Steven Watanabe
//
// 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)
//
// $Id$
#ifndef BOOST_TYPE_ERASURE_DERIVED_HPP_INCLUDED
#define BOOST_TYPE_ERASURE_DERIVED_HPP_INCLUDED
namespace boost {
namespace type_erasure {
/**
* A metafunction which returns the full @ref any type,
* when given any of its base classes. This is primarily
* intended to be used when implementing @ref concept_interface.
*
* \see rebind_any, as_param
*/
template<class T>
struct derived
{
#ifdef BOOST_TYPE_ERASURE_DOXYGEN
typedef detail::unspecified type;
#else
typedef typename T::_boost_type_erasure_derived_type type;
#endif
};
#ifndef BOOST_NO_CXX11_TEMPLATE_ALIASES
template<class T>
using derived_t = typename T::_boost_type_erasure_derived_type;
#endif
}
}
#endif