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1 | // Copyright 2002 The Trustees of Indiana University. |
2 | ||
3 | // Use, modification and distribution is subject to the Boost Software | |
4 | // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at | |
5 | // http://www.boost.org/LICENSE_1_0.txt) | |
6 | ||
7 | // Boost.MultiArray Library | |
8 | // Authors: Ronald Garcia | |
9 | // Jeremy Siek | |
10 | // Andrew Lumsdaine | |
11 | // See http://www.boost.org/libs/multi_array for documentation. | |
12 | ||
13 | #ifndef RANGE_LIST_RG072501_HPP | |
14 | #define RANGE_LIST_RG072501_HPP | |
15 | // | |
16 | // range_list.hpp - helper to build boost::arrays for *_set types | |
17 | // | |
18 | ||
19 | #include "boost/array.hpp" | |
20 | ||
21 | namespace boost { | |
22 | namespace detail { | |
23 | namespace multi_array { | |
24 | ||
25 | ///////////////////////////////////////////////////////////////////////// | |
26 | // choose range list begins | |
27 | // | |
28 | ||
29 | struct choose_range_list_n { | |
30 | template <typename T, std::size_t NumRanges> | |
31 | struct bind { | |
32 | typedef boost::array<T,NumRanges> type; | |
33 | }; | |
34 | }; | |
35 | ||
36 | struct choose_range_list_zero { | |
37 | template <typename T, std::size_t NumRanges> | |
38 | struct bind { | |
39 | typedef boost::array<T,1> type; | |
40 | }; | |
41 | }; | |
42 | ||
43 | ||
44 | template <std::size_t NumRanges> | |
45 | struct range_list_gen_helper { | |
46 | typedef choose_range_list_n choice; | |
47 | }; | |
48 | ||
49 | template <> | |
50 | struct range_list_gen_helper<0> { | |
51 | typedef choose_range_list_zero choice; | |
52 | }; | |
53 | ||
54 | template <typename T, std::size_t NumRanges> | |
55 | struct range_list_generator { | |
56 | private: | |
57 | typedef typename range_list_gen_helper<NumRanges>::choice Choice; | |
58 | public: | |
59 | typedef typename Choice::template bind<T,NumRanges>::type type; | |
60 | }; | |
61 | ||
62 | // | |
63 | // choose range list ends | |
64 | ///////////////////////////////////////////////////////////////////////// | |
65 | ||
66 | } // namespace multi_array | |
67 | } // namespace detail | |
68 | } // namespace boost | |
69 | ||
70 | #endif // RANGE_LIST_RG072501_HPP |