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1 |
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2 #ifndef BOOST_MPL_FOLD_HPP_INCLUDED |
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3 #define BOOST_MPL_FOLD_HPP_INCLUDED |
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4 |
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5 // Copyright Aleksey Gurtovoy 2001-2004 |
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6 // Copyright David Abrahams 2001-2002 |
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7 // |
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8 // Distributed under the Boost Software License, Version 1.0. |
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9 // (See accompanying file LICENSE_1_0.txt or copy at |
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10 // http://www.boost.org/LICENSE_1_0.txt) |
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11 // |
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12 // See http://www.boost.org/libs/mpl for documentation. |
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13 |
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14 // $Source: /cvsroot/boost/boost/boost/mpl/fold.hpp,v $ |
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15 // $Date: 2004/09/02 15:40:41 $ |
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16 // $Revision: 1.4 $ |
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17 |
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18 #include <boost/mpl/begin_end.hpp> |
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19 #include <boost/mpl/O1_size.hpp> |
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20 #include <boost/mpl/aux_/fold_impl.hpp> |
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21 #include <boost/mpl/aux_/na_spec.hpp> |
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22 #include <boost/mpl/aux_/lambda_support.hpp> |
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23 |
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24 namespace boost { namespace mpl { |
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25 |
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26 template< |
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27 typename BOOST_MPL_AUX_NA_PARAM(Sequence) |
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28 , typename BOOST_MPL_AUX_NA_PARAM(State) |
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29 , typename BOOST_MPL_AUX_NA_PARAM(ForwardOp) |
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30 > |
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31 struct fold |
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32 { |
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33 typedef typename aux::fold_impl< |
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34 ::boost::mpl::O1_size<Sequence>::value |
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35 , typename begin<Sequence>::type |
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36 , typename end<Sequence>::type |
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37 , State |
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38 , ForwardOp |
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39 >::state type; |
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40 |
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41 BOOST_MPL_AUX_LAMBDA_SUPPORT(3,fold,(Sequence,State,ForwardOp)) |
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42 }; |
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43 |
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44 BOOST_MPL_AUX_NA_SPEC(3, fold) |
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45 |
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46 }} |
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47 |
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48 #endif // BOOST_MPL_FOLD_HPP_INCLUDED |