source: NonGTP/Boost/boost/mpl/stable_partition.hpp @ 857

Revision 857, 1.8 KB checked in by igarcia, 19 years ago (diff)
RevLine 
[857]1
2#ifndef BOOST_MPL_STABLE_PARTITION_HPP_INCLUDED
3#define BOOST_MPL_STABLE_PARTITION_HPP_INCLUDED
4
5// Copyright Eric Friedman 2002-2003
6// Copyright Aleksey Gurtovoy 2004
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// $Source: /cvsroot/boost/boost/boost/mpl/stable_partition.hpp,v $
15// $Date: 2004/11/28 01:58:27 $
16// $Revision: 1.4 $
17
18#include <boost/mpl/fold.hpp>
19#include <boost/mpl/reverse_fold.hpp>
20#include <boost/mpl/protect.hpp>
21#include <boost/mpl/aux_/partition_op.hpp>
22#include <boost/mpl/aux_/inserter_algorithm.hpp>
23#include <boost/mpl/aux_/na.hpp>
24
25namespace boost { namespace mpl {
26
27namespace aux {
28 
29template <
30      typename Sequence
31    , typename Pred
32    , typename In
33    , typename In2
34    , typename In1 = typename if_na<In,In2>::type
35    >
36struct stable_partition_impl
37    : fold<
38          Sequence
39        , pair< typename In1::state, typename In2::state >
40        , protect< partition_op<
41              Pred
42            , typename In1::operation
43            , typename In2::operation
44            > >
45        >
46{
47};
48
49template <
50      typename Sequence
51    , typename Pred
52    , typename In
53    , typename In2
54    , typename In1 = typename if_na<In,In2>::type
55    >
56struct reverse_stable_partition_impl
57    : reverse_fold<
58          Sequence
59        , pair< typename In1::state, typename In2::state >
60        , protect< partition_op<
61              Pred
62            , typename In1::operation
63            , typename In2::operation
64            > >
65        >
66{
67};
68
69} // namespace aux
70
71BOOST_MPL_AUX_INSERTER_ALGORITHM_DEF(4, stable_partition)
72
73}}
74
75#endif // BOOST_MPL_STABLE_PARTITION_HPP_INCLUDED
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