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53 lines
1.3 KiB
53 lines
1.3 KiB
3 years ago
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#ifndef BOOST_MPL_AUX_SIZE_IMPL_HPP_INCLUDED
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#define BOOST_MPL_AUX_SIZE_IMPL_HPP_INCLUDED
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// Copyright Aleksey Gurtovoy 2000-2004
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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/size_fwd.hpp>
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#include <boost/mpl/begin_end.hpp>
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#include <boost/mpl/distance.hpp>
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#include <boost/mpl/aux_/traits_lambda_spec.hpp>
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#include <boost/mpl/aux_/config/workaround.hpp>
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namespace boost { namespace mpl {
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// default implementation; conrete sequences might override it by
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// specializing either the 'size_impl' or the primary 'size' template
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template< typename Tag >
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struct size_impl
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{
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template< typename Sequence > struct apply
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#if !BOOST_WORKAROUND(BOOST_BORLANDC, BOOST_TESTED_AT(0x561))
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: distance<
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typename begin<Sequence>::type
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, typename end<Sequence>::type
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>
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{
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#else
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{
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typedef typename distance<
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typename begin<Sequence>::type
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, typename end<Sequence>::type
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>::type type;
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#endif
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};
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};
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BOOST_MPL_ALGORITM_TRAITS_LAMBDA_SPEC(1, size_impl)
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}}
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#endif // BOOST_MPL_AUX_SIZE_IMPL_HPP_INCLUDED
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