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1 | /*============================================================================= |
2 | Copyright (c) 2001-2011 Joel de Guzman | |
3 | ||
4 | Distributed under the Boost Software License, Version 1.0. (See accompanying | |
5 | file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | |
6 | ==============================================================================*/ | |
7 | #if !defined(FUSION_TRANSFORM_VIEW_07162005_1037) | |
8 | #define FUSION_TRANSFORM_VIEW_07162005_1037 | |
9 | ||
10 | #include <boost/fusion/support/config.hpp> | |
11 | #include <boost/static_assert.hpp> | |
12 | #include <boost/fusion/support/detail/access.hpp> | |
13 | #include <boost/fusion/support/is_view.hpp> | |
14 | #include <boost/fusion/support/category_of.hpp> | |
15 | #include <boost/fusion/view/transform_view/transform_view_iterator.hpp> | |
16 | #include <boost/fusion/view/transform_view/transform_view_fwd.hpp> | |
17 | #include <boost/fusion/view/transform_view/detail/begin_impl.hpp> | |
18 | #include <boost/fusion/view/transform_view/detail/end_impl.hpp> | |
19 | #include <boost/fusion/view/transform_view/detail/at_impl.hpp> | |
20 | #include <boost/fusion/view/transform_view/detail/value_at_impl.hpp> | |
21 | #include <boost/fusion/view/detail/strictest_traversal.hpp> | |
22 | #include <boost/fusion/container/vector/vector10.hpp> | |
23 | #include <boost/fusion/sequence/intrinsic/size.hpp> | |
24 | #include <boost/fusion/support/sequence_base.hpp> | |
25 | #include <boost/fusion/sequence/intrinsic/begin.hpp> | |
26 | #include <boost/fusion/sequence/intrinsic/end.hpp> | |
27 | #include <boost/fusion/sequence/intrinsic/size.hpp> | |
28 | #include <boost/mpl/bool.hpp> | |
29 | ||
30 | namespace boost { namespace fusion | |
31 | { | |
32 | struct void_; | |
33 | struct transform_view_tag; | |
34 | struct transform_view2_tag; | |
35 | struct fusion_sequence_tag; | |
36 | ||
37 | // Binary Version | |
38 | template <typename Sequence1, typename Sequence2, typename F> | |
39 | struct transform_view : sequence_base<transform_view<Sequence1, Sequence2, F> > | |
40 | { | |
41 | BOOST_STATIC_ASSERT(result_of::size<Sequence1>::value == result_of::size<Sequence2>::value); | |
42 | typedef transform_view2_tag fusion_tag; | |
43 | typedef fusion_sequence_tag tag; // this gets picked up by MPL | |
44 | typedef mpl::true_ is_view; | |
45 | ||
46 | typedef typename traits::category_of<Sequence1>::type category1; | |
47 | typedef typename traits::category_of<Sequence2>::type category2; | |
48 | typedef typename detail::strictest_traversal< | |
49 | fusion::vector2<Sequence1, Sequence2> >::type category; | |
50 | typedef typename result_of::begin<Sequence1>::type first1_type; | |
51 | typedef typename result_of::begin<Sequence2>::type first2_type; | |
52 | typedef typename result_of::end<Sequence1>::type last1_type; | |
53 | typedef typename result_of::end<Sequence2>::type last2_type; | |
54 | typedef typename result_of::size<Sequence1>::type size; | |
55 | typedef Sequence1 sequence1_type; | |
56 | typedef Sequence2 sequence2_type; | |
57 | typedef F transform_type; | |
58 | ||
59 | BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED | |
60 | transform_view(Sequence1& in_seq1, Sequence2& in_seq2, F const& binop) | |
61 | : f(binop) | |
62 | , seq1(in_seq1) | |
63 | , seq2(in_seq2) | |
64 | {} | |
65 | ||
66 | BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED | |
67 | first1_type first1() const { return fusion::begin(seq1); } | |
68 | BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED | |
69 | first2_type first2() const { return fusion::begin(seq2); } | |
70 | BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED | |
71 | last1_type last1() const { return fusion::end(seq1); } | |
72 | BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED | |
73 | last2_type last2() const { return fusion::end(seq2); } | |
74 | ||
75 | transform_type f; | |
76 | typename mpl::if_<traits::is_view<Sequence1>, Sequence1, Sequence1&>::type seq1; | |
77 | typename mpl::if_<traits::is_view<Sequence2>, Sequence2, Sequence2&>::type seq2; | |
78 | ||
79 | private: | |
80 | // silence MSVC warning C4512: assignment operator could not be generated | |
81 | transform_view& operator= (transform_view const&); | |
82 | }; | |
83 | ||
84 | // Unary Version | |
85 | template <typename Sequence, typename F> | |
86 | #if defined(BOOST_NO_PARTIAL_SPECIALIZATION_IMPLICIT_DEFAULT_ARGS) | |
87 | struct transform_view<Sequence, F, void_> : sequence_base<transform_view<Sequence, F, void_> > | |
88 | #else | |
89 | struct transform_view<Sequence, F> : sequence_base<transform_view<Sequence, F> > | |
90 | #endif | |
91 | { | |
92 | typedef transform_view_tag fusion_tag; | |
93 | typedef fusion_sequence_tag tag; // this gets picked up by MPL | |
94 | typedef mpl::true_ is_view; | |
95 | ||
96 | typedef typename traits::category_of<Sequence>::type category; | |
97 | typedef typename result_of::begin<Sequence>::type first_type; | |
98 | typedef typename result_of::end<Sequence>::type last_type; | |
99 | typedef typename result_of::size<Sequence>::type size; | |
100 | typedef Sequence sequence_type; | |
101 | typedef F transform_type; | |
102 | ||
103 | BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED | |
104 | transform_view(Sequence& in_seq, F const& in_f) | |
105 | : seq(in_seq) | |
106 | , f(in_f) | |
107 | {} | |
108 | ||
109 | BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED | |
110 | first_type first() const { return fusion::begin(seq); } | |
111 | BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED | |
112 | last_type last() const { return fusion::end(seq); } | |
113 | typename mpl::if_<traits::is_view<Sequence>, Sequence, Sequence&>::type seq; | |
114 | transform_type f; | |
115 | ||
116 | private: | |
117 | // silence MSVC warning C4512: assignment operator could not be generated | |
118 | transform_view& operator= (transform_view const&); | |
119 | }; | |
120 | }} | |
121 | ||
122 | #endif | |
123 | ||
124 |