1 | |
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2 | // (C) Copyright John Maddock 2007. |
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3 | // Use, modification and distribution are subject to the Boost Software License, |
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4 | // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at |
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5 | // http://www.boost.org/LICENSE_1_0.txt). |
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6 | // |
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7 | // See http://www.boost.org/libs/type_traits for most recent version including documentation. |
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8 | |
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9 | #ifndef BOOST_TT_MAKE_UNSIGNED_HPP_INCLUDED |
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10 | #define BOOST_TT_MAKE_UNSIGNED_HPP_INCLUDED |
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11 | |
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12 | #include <boost/mpl/if.hpp> |
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13 | #include <boost/type_traits/is_integral.hpp> |
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14 | #include <boost/type_traits/is_signed.hpp> |
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15 | #include <boost/type_traits/is_unsigned.hpp> |
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16 | #include <boost/type_traits/is_enum.hpp> |
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17 | #include <boost/type_traits/is_same.hpp> |
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18 | #include <boost/type_traits/remove_cv.hpp> |
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19 | #include <boost/type_traits/is_const.hpp> |
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20 | #include <boost/type_traits/is_volatile.hpp> |
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21 | #include <boost/type_traits/add_const.hpp> |
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22 | #include <boost/type_traits/add_volatile.hpp> |
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23 | #include <boost/type_traits/detail/ice_or.hpp> |
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24 | #include <boost/type_traits/detail/ice_and.hpp> |
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25 | #include <boost/type_traits/detail/ice_not.hpp> |
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26 | #include <boost/static_assert.hpp> |
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27 | |
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28 | // should be the last #include |
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29 | #include <boost/type_traits/detail/type_trait_def.hpp> |
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30 | |
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31 | namespace boost { |
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32 | |
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33 | namespace detail { |
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34 | |
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35 | template <class T> |
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36 | struct make_unsigned_imp |
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37 | { |
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38 | BOOST_STATIC_ASSERT( |
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39 | (::boost::type_traits::ice_or< ::boost::is_integral<T>::value, ::boost::is_enum<T>::value>::value)); |
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40 | #if !BOOST_WORKAROUND(BOOST_MSVC, <=1300) |
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41 | BOOST_STATIC_ASSERT( |
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42 | (::boost::type_traits::ice_not< ::boost::is_same< |
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43 | typename remove_cv<T>::type, bool>::value>::value)); |
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44 | #endif |
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45 | |
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46 | typedef typename remove_cv<T>::type t_no_cv; |
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47 | typedef typename mpl::if_c< |
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48 | (::boost::type_traits::ice_and< |
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49 | ::boost::is_unsigned<T>::value, |
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50 | ::boost::is_integral<T>::value, |
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51 | ::boost::type_traits::ice_not< ::boost::is_same<t_no_cv, char>::value>::value, |
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52 | ::boost::type_traits::ice_not< ::boost::is_same<t_no_cv, wchar_t>::value>::value, |
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53 | ::boost::type_traits::ice_not< ::boost::is_same<t_no_cv, bool>::value>::value >::value), |
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54 | T, |
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55 | typename mpl::if_c< |
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56 | (::boost::type_traits::ice_and< |
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57 | ::boost::is_integral<T>::value, |
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58 | ::boost::type_traits::ice_not< ::boost::is_same<t_no_cv, char>::value>::value, |
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59 | ::boost::type_traits::ice_not< ::boost::is_same<t_no_cv, wchar_t>::value>::value, |
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60 | ::boost::type_traits::ice_not< ::boost::is_same<t_no_cv, bool>::value>::value> |
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61 | ::value), |
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62 | typename mpl::if_< |
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63 | is_same<t_no_cv, signed char>, |
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64 | unsigned char, |
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65 | typename mpl::if_< |
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66 | is_same<t_no_cv, short>, |
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67 | unsigned short, |
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68 | typename mpl::if_< |
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69 | is_same<t_no_cv, int>, |
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70 | unsigned int, |
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71 | typename mpl::if_< |
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72 | is_same<t_no_cv, long>, |
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73 | unsigned long, |
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74 | #if defined(BOOST_HAS_LONG_LONG) |
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75 | boost::ulong_long_type |
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76 | #elif defined(BOOST_HAS_MS_INT64) |
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77 | unsigned __int64 |
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78 | #else |
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79 | unsigned long |
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80 | #endif |
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81 | >::type |
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82 | >::type |
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83 | >::type |
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84 | >::type, |
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85 | // Not a regular integer type: |
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86 | typename mpl::if_c< |
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87 | sizeof(t_no_cv) == sizeof(unsigned char), |
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88 | unsigned char, |
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89 | typename mpl::if_c< |
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90 | sizeof(t_no_cv) == sizeof(unsigned short), |
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91 | unsigned short, |
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92 | typename mpl::if_c< |
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93 | sizeof(t_no_cv) == sizeof(unsigned int), |
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94 | unsigned int, |
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95 | typename mpl::if_c< |
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96 | sizeof(t_no_cv) == sizeof(unsigned long), |
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97 | unsigned long, |
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98 | #if defined(BOOST_HAS_LONG_LONG) |
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99 | boost::ulong_long_type |
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100 | #elif defined(BOOST_HAS_MS_INT64) |
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101 | unsigned __int64 |
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102 | #else |
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103 | unsigned long |
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104 | #endif |
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105 | >::type |
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106 | >::type |
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107 | >::type |
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108 | >::type |
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109 | >::type |
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110 | >::type base_integer_type; |
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111 | |
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112 | // Add back any const qualifier: |
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113 | typedef typename mpl::if_< |
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114 | is_const<T>, |
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115 | typename add_const<base_integer_type>::type, |
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116 | base_integer_type |
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117 | >::type const_base_integer_type; |
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118 | |
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119 | // Add back any volatile qualifier: |
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120 | typedef typename mpl::if_< |
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121 | is_volatile<T>, |
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122 | typename add_volatile<const_base_integer_type>::type, |
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123 | const_base_integer_type |
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124 | >::type type; |
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125 | }; |
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126 | |
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127 | |
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128 | } // namespace detail |
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129 | |
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130 | BOOST_TT_AUX_TYPE_TRAIT_DEF1(make_unsigned,T,typename boost::detail::make_unsigned_imp<T>::type) |
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131 | |
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132 | } // namespace boost |
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133 | |
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134 | #include <boost/type_traits/detail/type_trait_undef.hpp> |
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135 | |
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136 | #endif // BOOST_TT_ADD_REFERENCE_HPP_INCLUDED |
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137 | |
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