/*-----------------------------------------------------------------------------+
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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_CODOMAIN_TYPE_OF_HPP_JOFA_100829
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#define BOOST_ICL_TYPE_TRAITS_CODOMAIN_TYPE_OF_HPP_JOFA_100829
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#include <set>
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#include <boost/mpl/has_xxx.hpp>
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#include <boost/mpl/bool.hpp>
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#include <boost/icl/type_traits/no_type.hpp>
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#include <boost/icl/type_traits/is_container.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(codomain_type)
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}
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template <class Type>
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struct has_codomain_type
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: mpl::bool_<detail::has_codomain_type<Type>::value>
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{};
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template <class Type, bool has_codomain_type, bool is_std_set>
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struct get_codomain_type;
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template <class Type>
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struct get_codomain_type<Type, false, false>
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{
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typedef no_type type;
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};
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template <class Type, bool is_std_set>
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struct get_codomain_type<Type, true, is_std_set>
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{
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typedef typename Type::codomain_type type;
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};
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template <class Type>
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struct get_codomain_type<Type, false, true>
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{
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typedef typename Type::value_type type;
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};
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template <class Type>
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struct codomain_type_of
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{
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typedef typename
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get_codomain_type< Type
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, has_codomain_type<Type>::value
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, is_std_set<Type>::value
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>::type type;
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};
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}} // namespace boost icl
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#endif
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