summaryrefslogtreecommitdiffstats
blob: f36720786c28ea16987c92747c8b38ee22e027e7 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145

#ifndef BOOST_MPL_TRANSFORM_HPP_INCLUDED
#define BOOST_MPL_TRANSFORM_HPP_INCLUDED

// Copyright Aleksey Gurtovoy 2000-2004
// Copyright David Abrahams 2003-2004
//
// Distributed under the Boost Software License, Version 1.0. 
// (See accompanying file LICENSE_1_0.txt or copy at 
// http://www.boost.org/LICENSE_1_0.txt)
//
// See http://www.boost.org/libs/mpl for documentation.

// $Id: transform.hpp 49267 2008-10-11 06:19:02Z agurtovoy $
// $Date: 2008-10-11 02:19:02 -0400 (Sat, 11 Oct 2008) $
// $Revision: 49267 $

#include <boost/mpl/fold.hpp>
#include <boost/mpl/reverse_fold.hpp>
#include <boost/mpl/pair_view.hpp>
#include <boost/mpl/is_sequence.hpp>
#include <boost/mpl/eval_if.hpp>
#include <boost/mpl/lambda.hpp>
#include <boost/mpl/bind.hpp>
#include <boost/mpl/or.hpp>
#include <boost/mpl/not.hpp>
#include <boost/mpl/aux_/na.hpp>
#include <boost/mpl/aux_/inserter_algorithm.hpp>

namespace boost { namespace mpl {

namespace aux { 

template< 
      typename Seq
    , typename Op
    , typename In
    >
struct transform1_impl
    : fold< 
          Seq
        , typename In::state
        , bind2< typename lambda< typename In::operation >::type
            , _1
            , bind1< typename lambda<Op>::type, _2>
            > 
        >
{
};

template< 
      typename Seq
    , typename Op
    , typename In
    >
struct reverse_transform1_impl
    : reverse_fold< 
          Seq
        , typename In::state
        , bind2< typename lambda< typename In::operation >::type
            , _1
            , bind1< typename lambda<Op>::type, _2>
            > 
        >
{
};

template< 
      typename Seq1
    , typename Seq2
    , typename Op
    , typename In
    >
struct transform2_impl
    : fold< 
          pair_view<Seq1,Seq2>
        , typename In::state
        , bind2< typename lambda< typename In::operation >::type
            , _1
            , bind2<
                  typename lambda<Op>::type
                , bind1<first<>,_2>
                , bind1<second<>,_2>
                >
            > 
        >
{
};

template< 
      typename Seq1
    , typename Seq2
    , typename Op
    , typename In
    >
struct reverse_transform2_impl
    : reverse_fold< 
          pair_view<Seq1,Seq2>
        , typename In::state
        , bind2< typename lambda< typename In::operation >::type
            , _1
            , bind2< typename lambda< Op >::type
                , bind1<first<>,_2>
                , bind1<second<>,_2>
                >
            > 
        >
{
};

} // namespace aux 

BOOST_MPL_AUX_INSERTER_ALGORITHM_DEF(3, transform1)                    
BOOST_MPL_AUX_INSERTER_ALGORITHM_DEF(4, transform2)
    
#define AUX778076_TRANSFORM_DEF(name)                                   \
template<                                                               \
      typename BOOST_MPL_AUX_NA_PARAM(Seq1)                             \
    , typename BOOST_MPL_AUX_NA_PARAM(Seq2OrOperation)                  \
    , typename BOOST_MPL_AUX_NA_PARAM(OperationOrInserter)              \
    , typename BOOST_MPL_AUX_NA_PARAM(Inserter)                         \
    >                                                                   \
struct name                                                             \
{                                                                       \
    typedef typename eval_if<                                           \
          or_<                                                          \
              is_na<OperationOrInserter>                                \
            , is_lambda_expression< Seq2OrOperation >                   \
            , not_< is_sequence<Seq2OrOperation> >                      \
            >                                                           \
        , name##1<Seq1,Seq2OrOperation,OperationOrInserter>             \
        , name##2<Seq1,Seq2OrOperation,OperationOrInserter,Inserter>    \
        >::type type;                                                   \
};                                                                      \
BOOST_MPL_AUX_NA_SPEC(4, name)                                          \
/**/

AUX778076_TRANSFORM_DEF(transform)
AUX778076_TRANSFORM_DEF(reverse_transform)

#undef AUX778076_TRANSFORM_DEF

}}

#endif // BOOST_MPL_TRANSFORM_HPP_INCLUDED