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1 |
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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 |