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1 | |
2 | #ifndef BOOST_MPL_AUX_INSERT_RANGE_IMPL_HPP_INCLUDED | |
3 | #define BOOST_MPL_AUX_INSERT_RANGE_IMPL_HPP_INCLUDED | |
4 | ||
5 | // Copyright Aleksey Gurtovoy 2000-2004 | |
6 | // | |
7 | // Distributed under the Boost Software License, Version 1.0. | |
8 | // (See accompanying file LICENSE_1_0.txt or copy at | |
9 | // http://www.boost.org/LICENSE_1_0.txt) | |
10 | // | |
11 | // See http://www.boost.org/libs/mpl for documentation. | |
12 | ||
13 | // $Id$ | |
14 | // $Date$ | |
15 | // $Revision$ | |
16 | ||
17 | #include <boost/mpl/placeholders.hpp> | |
18 | #include <boost/mpl/fold.hpp> | |
19 | #include <boost/mpl/insert.hpp> | |
20 | #include <boost/mpl/clear.hpp> | |
21 | #include <boost/mpl/joint_view.hpp> | |
22 | #include <boost/mpl/iterator_range.hpp> | |
23 | #include <boost/mpl/aux_/na_spec.hpp> | |
24 | #include <boost/mpl/aux_/iter_push_front.hpp> | |
25 | #include <boost/mpl/aux_/traits_lambda_spec.hpp> | |
26 | #include <boost/mpl/aux_/config/forwarding.hpp> | |
27 | ||
28 | #include <boost/type_traits/same_traits.hpp> | |
29 | ||
30 | namespace boost { namespace mpl { | |
31 | ||
32 | // default implementation; conrete sequences might override it by | |
33 | // specializing either the 'insert_range_impl' or the primary | |
34 | // 'insert_range' template | |
35 | ||
36 | ||
37 | template< typename Tag > | |
38 | struct insert_range_impl | |
39 | { | |
40 | template< | |
41 | typename Sequence | |
42 | , typename Pos | |
43 | , typename Range | |
44 | > | |
45 | struct apply | |
46 | #if !defined(BOOST_MPL_CFG_NO_NESTED_FORWARDING) | |
47 | : reverse_fold< | |
48 | joint_view< | |
49 | iterator_range<typename begin<Sequence>::type,Pos> | |
50 | , joint_view< | |
51 | Range | |
52 | , iterator_range<Pos,typename end<Sequence>::type> | |
53 | > | |
54 | > | |
55 | , typename clear<Sequence>::type | |
56 | , insert<_1, begin<_1>, _2> | |
57 | > | |
58 | { | |
59 | #else | |
60 | { | |
61 | typedef typename reverse_fold< | |
62 | joint_view< | |
63 | iterator_range<typename begin<Sequence>::type,Pos> | |
64 | , joint_view< | |
65 | Range | |
66 | , iterator_range<Pos,typename end<Sequence>::type> | |
67 | > | |
68 | > | |
69 | , typename clear<Sequence>::type | |
70 | , insert<_1, begin<_1>, _2> | |
71 | >::type type; | |
72 | #endif | |
73 | }; | |
74 | }; | |
75 | ||
76 | BOOST_MPL_ALGORITM_TRAITS_LAMBDA_SPEC(3,insert_range_impl) | |
77 | ||
78 | }} | |
79 | ||
80 | #endif // BOOST_MPL_AUX_INSERT_RANGE_IMPL_HPP_INCLUDED |