/*-----------------------------------------------------------------------------+
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Copyright (c) 2008-2009: Joachim Faulhaber
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+------------------------------------------------------------------------------+
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Distributed under the Boost Software License, Version 1.0.
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(See accompanying file LICENCE.txt or copy at
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http://www.boost.org/LICENSE_1_0.txt)
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+-----------------------------------------------------------------------------*/
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#ifndef BOOST_ICL_TYPE_TRAITS_REP_TYPE_OF_HPP_JOFA_110329
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#define BOOST_ICL_TYPE_TRAITS_REP_TYPE_OF_HPP_JOFA_110329
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#include <boost/config.hpp> // For macro BOOST_STATIC_CONSTANT
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#include <boost/mpl/has_xxx.hpp>
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#include <boost/mpl/or.hpp>
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#include <boost/mpl/and.hpp>
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#include <boost/mpl/not.hpp>
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#include <boost/type_traits/is_same.hpp>
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#include <boost/icl/type_traits/no_type.hpp>
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namespace boost{ namespace icl
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{
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namespace detail
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{
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BOOST_MPL_HAS_XXX_TRAIT_DEF(rep)
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}
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//--------------------------------------------------------------------------
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template <class Type>
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struct has_rep_type
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: mpl::bool_<detail::has_rep<Type>::value>
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{};
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template <class Rep, class Type>
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struct represents // Rep represents Type; Type is_wrapper_of Rep
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: mpl::bool_<detail::has_rep<Type>::value>
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{
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typedef represents type;
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BOOST_STATIC_CONSTANT(bool,
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value = (mpl::and_< has_rep_type<Type>
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, boost::is_same<typename Type::rep, Rep> >::value)
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);
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};
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//--------------------------------------------------------------------------
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template <class Type, bool has_rep>
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struct get_rep_type;
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template <class Type>
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struct get_rep_type<Type, false>
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{
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typedef no_type type;
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};
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template <class Type>
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struct get_rep_type<Type, true>
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{
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typedef typename Type::rep type;
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};
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//--------------------------------------------------------------------------
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template<class Type>
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struct rep_type_of
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{
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typedef typename
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get_rep_type<Type, has_rep_type<Type>::value>::type type;
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};
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}} // namespace boost icl
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#endif
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