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
31namespace 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
119

source code of boost/boost/range/detail/common.hpp