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1 | // Boost.Range library |
2 | // | |
3 | // Copyright Thorsten Ottosen 2003-2004. Use, modification and | |
4 | // distribution is subject to the Boost Software License, Version | |
5 | // 1.0. (See accompanying file LICENSE_1_0.txt or copy at | |
6 | // http://www.boost.org/LICENSE_1_0.txt) | |
7 | // | |
8 | // For more information, see http://www.boost.org/libs/range/ | |
9 | // | |
10 | ||
11 | #ifndef BOOST_RANGE_DETAIL_BEGIN_HPP | |
12 | #define BOOST_RANGE_DETAIL_BEGIN_HPP | |
13 | ||
14 | #include <boost/config.hpp> // BOOST_MSVC | |
15 | #include <boost/detail/workaround.hpp> | |
16 | #include <boost/range/iterator.hpp> | |
17 | #include <boost/range/detail/common.hpp> | |
18 | ||
19 | namespace boost | |
20 | { | |
21 | ||
22 | namespace range_detail | |
23 | { | |
24 | template< typename T > | |
25 | struct range_begin; | |
26 | ||
27 | ////////////////////////////////////////////////////////////////////// | |
28 | // default | |
29 | ////////////////////////////////////////////////////////////////////// | |
30 | ||
31 | template<> | |
32 | struct range_begin<std_container_> | |
33 | { | |
34 | template< typename C > | |
35 | static BOOST_RANGE_DEDUCED_TYPENAME range_iterator<C>::type fun( C& c ) | |
36 | { | |
37 | return c.begin(); | |
38 | }; | |
39 | }; | |
40 | ||
41 | ////////////////////////////////////////////////////////////////////// | |
42 | // pair | |
43 | ////////////////////////////////////////////////////////////////////// | |
44 | ||
45 | template<> | |
46 | struct range_begin<std_pair_> | |
47 | { | |
48 | template< typename P > | |
49 | static BOOST_RANGE_DEDUCED_TYPENAME range_iterator<P>::type fun( const P& p ) | |
50 | { | |
51 | return p.first; | |
52 | } | |
53 | }; | |
54 | ||
55 | ////////////////////////////////////////////////////////////////////// | |
56 | // array | |
57 | ////////////////////////////////////////////////////////////////////// | |
58 | ||
59 | template<> | |
60 | struct range_begin<array_> | |
61 | { | |
62 | template<typename T> | |
63 | static BOOST_RANGE_DEDUCED_TYPENAME range_value<T>::type* fun(T& t) | |
64 | { | |
65 | return t; | |
66 | } | |
67 | }; | |
68 | ||
69 | } // namespace 'range_detail' | |
70 | ||
71 | namespace range_adl_barrier | |
72 | { | |
73 | template< typename C > | |
74 | inline BOOST_RANGE_DEDUCED_TYPENAME range_iterator<C>::type | |
75 | begin( C& c ) | |
76 | { | |
77 | return range_detail::range_begin< BOOST_RANGE_DEDUCED_TYPENAME range_detail::range<C>::type >::fun( c ); | |
78 | } | |
79 | } | |
80 | } // namespace 'boost' | |
81 | ||
82 | ||
83 | #endif |