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2 | #ifndef BOOST_MPL_AUX_SIZE_IMPL_HPP_INCLUDED
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3 | #define BOOST_MPL_AUX_SIZE_IMPL_HPP_INCLUDED
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4 |
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5 | // Copyright Aleksey Gurtovoy 2000-2004
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6 | //
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7 | // Distributed under the Boost Software License, Version 1.0.
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8 | // (See accompanying file LICENSE_1_0.txt or copy at
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9 | // http://www.boost.org/LICENSE_1_0.txt)
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10 | //
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11 | // See http://www.boost.org/libs/mpl for documentation.
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12 |
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13 | // $Source: /cvsroot/boost/boost/boost/mpl/aux_/size_impl.hpp,v $
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14 | // $Date: 2004/09/02 15:40:44 $
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15 | // $Revision: 1.5 $
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16 |
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17 | #include <boost/mpl/size_fwd.hpp>
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18 | #include <boost/mpl/begin_end.hpp>
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19 | #include <boost/mpl/distance.hpp>
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20 | #include <boost/mpl/aux_/traits_lambda_spec.hpp>
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21 | #include <boost/mpl/aux_/config/workaround.hpp>
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22 |
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23 | namespace boost { namespace mpl {
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24 |
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25 | // default implementation; conrete sequences might override it by
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26 | // specializing either the 'size_impl' or the primary 'size' template
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27 |
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28 | template< typename Tag >
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29 | struct size_impl
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30 | {
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31 | template< typename Sequence > struct apply
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32 | #if !BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x561))
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33 | : distance<
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34 | typename begin<Sequence>::type
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35 | , typename end<Sequence>::type
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36 | >
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37 | {
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38 | #else
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39 | {
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40 | typedef typename distance<
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41 | typename begin<Sequence>::type
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42 | , typename end<Sequence>::type
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43 | >::type type;
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44 | #endif
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45 | };
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46 | };
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47 |
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48 | BOOST_MPL_ALGORITM_TRAITS_LAMBDA_SPEC(1, size_impl)
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49 |
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50 | }}
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51 |
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52 | #endif // BOOST_MPL_AUX_SIZE_IMPL_HPP_INCLUDED
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