45 lines
1.3 KiB
C++
45 lines
1.3 KiB
C++
// (C) Copyright John Maddock & Thorsten Ottosen 2005.
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// Use, modification and distribution are subject to the Boost Software License,
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// Version 1.0. (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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//
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// See http://www.boost.org/libs/type_traits for most recent version including documentation.
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#ifndef BOOST_TT_DECAY_HPP_INCLUDED
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#define BOOST_TT_DECAY_HPP_INCLUDED
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#include <boost/type_traits/config.hpp>
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#include <boost/type_traits/is_array.hpp>
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#include <boost/type_traits/is_function.hpp>
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#include <boost/type_traits/remove_bounds.hpp>
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#include <boost/type_traits/add_pointer.hpp>
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#include <boost/type_traits/remove_reference.hpp>
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#include <boost/mpl/eval_if.hpp>
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#include <boost/mpl/identity.hpp>
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namespace boost
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{
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template< class T >
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struct decay
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{
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private:
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typedef BOOST_DEDUCED_TYPENAME remove_reference<T>::type Ty;
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public:
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typedef BOOST_DEDUCED_TYPENAME mpl::eval_if<
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is_array<Ty>,
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mpl::identity<BOOST_DEDUCED_TYPENAME remove_bounds<Ty>::type*>,
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BOOST_DEDUCED_TYPENAME mpl::eval_if<
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is_function<Ty>,
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add_pointer<Ty>,
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mpl::identity<Ty>
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>
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>::type type;
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};
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} // namespace boost
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#endif // BOOST_TT_DECAY_HPP_INCLUDED
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