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1 | |
2 | #ifndef BOOST_MPL_FOR_EACH_HPP_INCLUDED | |
3 | #define BOOST_MPL_FOR_EACH_HPP_INCLUDED | |
4 | ||
5 | // Copyright Aleksey Gurtovoy 2000-2008 | |
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/is_sequence.hpp> | |
18 | #include <boost/mpl/begin_end.hpp> | |
19 | #include <boost/mpl/apply.hpp> | |
20 | #include <boost/mpl/bool.hpp> | |
21 | #include <boost/mpl/next_prior.hpp> | |
22 | #include <boost/mpl/deref.hpp> | |
23 | #include <boost/mpl/identity.hpp> | |
24 | #include <boost/mpl/assert.hpp> | |
25 | #include <boost/mpl/aux_/config/gpu.hpp> | |
26 | #include <boost/mpl/aux_/unwrap.hpp> | |
27 | ||
28 | #include <boost/type_traits/is_same.hpp> | |
29 | #include <boost/utility/value_init.hpp> | |
30 | ||
31 | namespace boost { namespace mpl { | |
32 | ||
33 | namespace aux { | |
34 | ||
35 | template< bool done = true > | |
36 | struct for_each_impl | |
37 | { | |
38 | template< | |
39 | typename Iterator | |
40 | , typename LastIterator | |
41 | , typename TransformFunc | |
42 | , typename F | |
43 | > | |
44 | BOOST_MPL_CFG_GPU_ENABLED | |
45 | static void execute( | |
46 | Iterator* | |
47 | , LastIterator* | |
48 | , TransformFunc* | |
49 | , F | |
50 | ) | |
51 | { | |
52 | } | |
53 | }; | |
54 | ||
55 | template<> | |
56 | struct for_each_impl<false> | |
57 | { | |
58 | template< | |
59 | typename Iterator | |
60 | , typename LastIterator | |
61 | , typename TransformFunc | |
62 | , typename F | |
63 | > | |
64 | BOOST_MPL_CFG_GPU_ENABLED | |
65 | static void execute( | |
66 | Iterator* | |
67 | , LastIterator* | |
68 | , TransformFunc* | |
69 | , F f | |
70 | ) | |
71 | { | |
72 | typedef typename deref<Iterator>::type item; | |
73 | typedef typename apply1<TransformFunc,item>::type arg; | |
74 | ||
75 | // dwa 2002/9/10 -- make sure not to invoke undefined behavior | |
76 | // when we pass arg. | |
77 | value_initialized<arg> x; | |
78 | aux::unwrap(f, 0)(boost::get(x)); | |
79 | ||
80 | typedef typename mpl::next<Iterator>::type iter; | |
81 | for_each_impl<boost::is_same<iter,LastIterator>::value> | |
82 | ::execute( static_cast<iter*>(0), static_cast<LastIterator*>(0), static_cast<TransformFunc*>(0), f); | |
83 | } | |
84 | }; | |
85 | ||
86 | } // namespace aux | |
87 | ||
88 | // agurt, 17/mar/02: pointer default parameters are necessary to workaround | |
89 | // MSVC 6.5 function template signature's mangling bug | |
90 | template< | |
91 | typename Sequence | |
92 | , typename TransformOp | |
93 | , typename F | |
94 | > | |
95 | BOOST_MPL_CFG_GPU_ENABLED | |
96 | inline | |
97 | void for_each(F f, Sequence* = 0, TransformOp* = 0) | |
98 | { | |
99 | BOOST_MPL_ASSERT(( is_sequence<Sequence> )); | |
100 | ||
101 | typedef typename begin<Sequence>::type first; | |
102 | typedef typename end<Sequence>::type last; | |
103 | ||
104 | aux::for_each_impl< boost::is_same<first,last>::value > | |
105 | ::execute(static_cast<first*>(0), static_cast<last*>(0), static_cast<TransformOp*>(0), f); | |
106 | } | |
107 | ||
108 | template< | |
109 | typename Sequence | |
110 | , typename F | |
111 | > | |
112 | BOOST_MPL_CFG_GPU_ENABLED | |
113 | inline | |
114 | void for_each(F f, Sequence* = 0) | |
115 | { | |
116 | // jfalcou: fully qualifying this call so it doesnt clash with phoenix::for_each | |
117 | // ons ome compilers -- done on 02/28/2011 | |
118 | boost::mpl::for_each<Sequence, identity<> >(f); | |
119 | } | |
120 | ||
121 | }} | |
122 | ||
123 | #endif // BOOST_MPL_FOR_EACH_HPP_INCLUDED |