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