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

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