48 lines
1.2 KiB
Plaintext
48 lines
1.2 KiB
Plaintext
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#ifndef BOOST_MPL_AUX_TYPE_WRAPPER_HPP_INCLUDED
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#define BOOST_MPL_AUX_TYPE_WRAPPER_HPP_INCLUDED
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// Copyright Aleksey Gurtovoy 2000-2004
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// Copyright Peter Dimov 2000-2003
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//
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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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//
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// See http://www.boost.org/libs/mpl for documentation.
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// $Id$
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// $Date$
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// $Revision$
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#include <boost/mpl/aux_/config/ctps.hpp>
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namespace boost { namespace mpl { namespace aux {
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template< typename T > struct type_wrapper
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{
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typedef T type;
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};
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#if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
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// agurt 08/may/03: a complicated way to extract the wrapped type; need it
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// mostly for the sake of GCC (3.2.x), which ICEs if you try to extract the
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// nested 'type' from 'type_wrapper<T>' when the latter was the result of a
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// 'typeof' expression
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template< typename T > struct wrapped_type;
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template< typename T > struct wrapped_type< type_wrapper<T> >
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{
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typedef T type;
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};
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#else
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template< typename W > struct wrapped_type
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{
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typedef typename W::type type;
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};
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#endif
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}}}
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#endif // BOOST_MPL_AUX_TYPE_WRAPPER_HPP_INCLUDED
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