// Copyright David Abrahams, Daniel Wallin 2003.
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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#ifndef BOOST_PARAMETER_AUX_PACK_UNMATCHED_ARGUMENT_HPP
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#define BOOST_PARAMETER_AUX_PACK_UNMATCHED_ARGUMENT_HPP
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#include <boost/parameter/config.hpp>
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#if defined(BOOST_PARAMETER_CAN_USE_MP11)
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#include <type_traits>
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#else
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#include <boost/mpl/bool.hpp>
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#include <boost/mpl/if.hpp>
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#include <boost/mpl/assert.hpp>
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#include <boost/type_traits/is_same.hpp>
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#endif
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namespace boost { namespace parameter { namespace aux {
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template <typename T>
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struct unmatched_argument
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{
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#if defined(BOOST_PARAMETER_CAN_USE_MP11)
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static_assert(::std::is_same<T,void>::value, "T == void");
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#else
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BOOST_MPL_ASSERT((
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typename ::boost::mpl::if_<
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::boost::is_same<T,void>
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, ::boost::mpl::true_
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, ::boost::mpl::false_
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>::type
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));
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#endif
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typedef int type;
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};
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}}} // namespace boost::parameter::aux
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#endif // include guard
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