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1 | /*============================================================================= |
2 | Copyright (c) 2005-2013 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(BOOST_FUSION_BUILD_MAP_02042013_1448) | |
8 | #define BOOST_FUSION_BUILD_MAP_02042013_1448 | |
9 | ||
10 | #include <boost/fusion/support/config.hpp> | |
11 | #include <boost/fusion/iterator/equal_to.hpp> | |
12 | #include <boost/fusion/iterator/next.hpp> | |
13 | #include <boost/fusion/iterator/value_of.hpp> | |
14 | #include <boost/fusion/iterator/deref.hpp> | |
15 | #include <boost/fusion/sequence/intrinsic/begin.hpp> | |
16 | #include <boost/fusion/sequence/intrinsic/end.hpp> | |
17 | #include <boost/fusion/container/map/map.hpp> | |
18 | #include <boost/fusion/algorithm/transformation/push_front.hpp> | |
19 | ||
20 | namespace boost { namespace fusion { namespace detail | |
21 | { | |
22 | template <typename First, typename Last, bool is_assoc | |
23 | , bool is_empty = result_of::equal_to<First, Last>::value | |
24 | > | |
25 | struct build_map; | |
26 | ||
27 | template <typename First, typename Last, bool is_assoc> | |
28 | struct build_map<First, Last, is_assoc, true> | |
29 | { | |
30 | typedef map<> type; | |
31 | BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED | |
32 | static type | |
33 | call(First const&, Last const&) | |
34 | { | |
35 | return type(); | |
36 | } | |
37 | }; | |
38 | ||
39 | template <typename T, typename Rest> | |
40 | struct push_front_map; | |
41 | ||
42 | template <typename T, typename ...Rest> | |
43 | struct push_front_map<T, map<Rest...>> | |
44 | { | |
45 | typedef map<T, Rest...> type; | |
46 | ||
47 | BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED | |
48 | static type | |
49 | call(T const& first, map<Rest...> const& rest) | |
50 | { | |
51 | return type(push_front(rest, first)); | |
52 | } | |
53 | }; | |
54 | ||
55 | template <typename First, typename Last, bool is_assoc> | |
56 | struct build_map<First, Last, is_assoc, false> | |
57 | { | |
58 | typedef | |
59 | build_map<typename result_of::next<First>::type, Last, is_assoc> | |
60 | next_build_map; | |
61 | ||
62 | typedef push_front_map< | |
63 | typename pair_from<First, is_assoc>::type | |
64 | , typename next_build_map::type> | |
65 | push_front; | |
66 | ||
67 | typedef typename push_front::type type; | |
68 | ||
69 | BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED | |
70 | static type | |
71 | call(First const& f, Last const& l) | |
72 | { | |
73 | return push_front::call( | |
74 | pair_from<First, is_assoc>::call(f) | |
75 | , next_build_map::call(fusion::next(f), l)); | |
76 | } | |
77 | }; | |
78 | }}} | |
79 | ||
80 | #endif |