[3428] | 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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