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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 | // $Id$ |
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| 15 | // $Date: 2008-10-11 02:19:02 -0400 (Sat, 11 Oct 2008) $ |
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| 16 | // $Revision: 49267 $ |
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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 |
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