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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_COMMON_HPP | |
12 | #define BOOST_RANGE_DETAIL_COMMON_HPP | |
13 | ||
14 | #if defined(_MSC_VER) | |
15 | # pragma once | |
16 | #endif | |
17 | ||
18 | #include <boost/range/config.hpp> | |
19 | #include <boost/range/detail/sfinae.hpp> | |
20 | #include <boost/type_traits/is_void.hpp> | |
21 | #include <boost/mpl/bool.hpp> | |
22 | #include <boost/mpl/if.hpp> | |
23 | #include <boost/mpl/int.hpp> | |
24 | #include <boost/mpl/or.hpp> | |
25 | #include <cstddef> | |
26 | ||
27 | ////////////////////////////////////////////////////////////////////////////// | |
28 | // missing partial specialization workaround. | |
29 | ////////////////////////////////////////////////////////////////////////////// | |
30 | ||
31 | namespace boost | |
32 | { | |
33 | namespace range_detail | |
34 | { | |
35 | // 1 = std containers | |
36 | // 2 = std::pair | |
37 | // 3 = const std::pair | |
38 | // 4 = array | |
39 | // 5 = const array | |
40 | // 6 = char array | |
41 | // 7 = wchar_t array | |
42 | // 8 = char* | |
43 | // 9 = const char* | |
44 | // 10 = whar_t* | |
45 | // 11 = const wchar_t* | |
46 | // 12 = string | |
47 | ||
48 | typedef mpl::int_<1>::type std_container_; | |
49 | typedef mpl::int_<2>::type std_pair_; | |
50 | typedef mpl::int_<3>::type const_std_pair_; | |
51 | typedef mpl::int_<4>::type array_; | |
52 | typedef mpl::int_<5>::type const_array_; | |
53 | typedef mpl::int_<6>::type char_array_; | |
54 | typedef mpl::int_<7>::type wchar_t_array_; | |
55 | typedef mpl::int_<8>::type char_ptr_; | |
56 | typedef mpl::int_<9>::type const_char_ptr_; | |
57 | typedef mpl::int_<10>::type wchar_t_ptr_; | |
58 | typedef mpl::int_<11>::type const_wchar_t_ptr_; | |
59 | typedef mpl::int_<12>::type string_; | |
60 | ||
61 | template< typename C > | |
62 | struct range_helper | |
63 | { | |
64 | static C* c; | |
65 | static C ptr; | |
66 | ||
67 | BOOST_STATIC_CONSTANT( bool, is_pair_ = sizeof( boost::range_detail::is_pair_impl( c ) ) == sizeof( yes_type ) ); | |
68 | BOOST_STATIC_CONSTANT( bool, is_char_ptr_ = sizeof( boost::range_detail::is_char_ptr_impl( ptr ) ) == sizeof( yes_type ) ); | |
69 | BOOST_STATIC_CONSTANT( bool, is_const_char_ptr_ = sizeof( boost::range_detail::is_const_char_ptr_impl( ptr ) ) == sizeof( yes_type ) ); | |
70 | BOOST_STATIC_CONSTANT( bool, is_wchar_t_ptr_ = sizeof( boost::range_detail::is_wchar_t_ptr_impl( ptr ) ) == sizeof( yes_type ) ); | |
71 | BOOST_STATIC_CONSTANT( bool, is_const_wchar_t_ptr_ = sizeof( boost::range_detail::is_const_wchar_t_ptr_impl( ptr ) ) == sizeof( yes_type ) ); | |
72 | BOOST_STATIC_CONSTANT( bool, is_char_array_ = sizeof( boost::range_detail::is_char_array_impl( ptr ) ) == sizeof( yes_type ) ); | |
73 | BOOST_STATIC_CONSTANT( bool, is_wchar_t_array_ = sizeof( boost::range_detail::is_wchar_t_array_impl( ptr ) ) == sizeof( yes_type ) ); | |
74 | BOOST_STATIC_CONSTANT( bool, is_string_ = (boost::mpl::or_<boost::mpl::bool_<is_const_char_ptr_>, boost::mpl::bool_<is_const_wchar_t_ptr_> >::value )); | |
75 | BOOST_STATIC_CONSTANT( bool, is_array_ = boost::is_array<C>::value ); | |
76 | ||
77 | }; | |
78 | ||
79 | template< typename C > | |
80 | class range | |
81 | { | |
82 | typedef BOOST_RANGE_DEDUCED_TYPENAME boost::mpl::if_c< ::boost::range_detail::range_helper<C>::is_pair_, | |
83 | boost::range_detail::std_pair_, | |
84 | void >::type pair_t; | |
85 | typedef BOOST_RANGE_DEDUCED_TYPENAME boost::mpl::if_c< ::boost::range_detail::range_helper<C>::is_array_, | |
86 | boost::range_detail::array_, | |
87 | pair_t >::type array_t; | |
88 | typedef BOOST_RANGE_DEDUCED_TYPENAME boost::mpl::if_c< ::boost::range_detail::range_helper<C>::is_string_, | |
89 | boost::range_detail::string_, | |
90 | array_t >::type string_t; | |
91 | typedef BOOST_RANGE_DEDUCED_TYPENAME boost::mpl::if_c< ::boost::range_detail::range_helper<C>::is_const_char_ptr_, | |
92 | boost::range_detail::const_char_ptr_, | |
93 | string_t >::type const_char_ptr_t; | |
94 | typedef BOOST_RANGE_DEDUCED_TYPENAME boost::mpl::if_c< ::boost::range_detail::range_helper<C>::is_char_ptr_, | |
95 | boost::range_detail::char_ptr_, | |
96 | const_char_ptr_t >::type char_ptr_t; | |
97 | typedef BOOST_RANGE_DEDUCED_TYPENAME boost::mpl::if_c< ::boost::range_detail::range_helper<C>::is_const_wchar_t_ptr_, | |
98 | boost::range_detail::const_wchar_t_ptr_, | |
99 | char_ptr_t >::type const_wchar_ptr_t; | |
100 | typedef BOOST_RANGE_DEDUCED_TYPENAME boost::mpl::if_c< ::boost::range_detail::range_helper<C>::is_wchar_t_ptr_, | |
101 | boost::range_detail::wchar_t_ptr_, | |
102 | const_wchar_ptr_t >::type wchar_ptr_t; | |
103 | typedef BOOST_RANGE_DEDUCED_TYPENAME boost::mpl::if_c< ::boost::range_detail::range_helper<C>::is_wchar_t_array_, | |
104 | boost::range_detail::wchar_t_array_, | |
105 | wchar_ptr_t >::type wchar_array_t; | |
106 | typedef BOOST_RANGE_DEDUCED_TYPENAME boost::mpl::if_c< ::boost::range_detail::range_helper<C>::is_char_array_, | |
107 | boost::range_detail::char_array_, | |
108 | wchar_array_t >::type char_array_t; | |
109 | public: | |
110 | typedef BOOST_RANGE_DEDUCED_TYPENAME boost::mpl::if_c< ::boost::is_void<char_array_t>::value, | |
111 | boost::range_detail::std_container_, | |
112 | char_array_t >::type type; | |
113 | }; // class 'range' | |
114 | } | |
115 | } | |
116 | ||
117 | #endif | |
118 |