Jeff Thompson | a28eed8 | 2013-08-22 16:21:10 -0700 | [diff] [blame] | 1 | |
| 2 | // (C) Copyright Runar Undheim, Robert Ramey & John Maddock 2008. |
| 3 | // Use, modification and distribution are subject to the Boost Software License, |
| 4 | // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at |
| 5 | // http://www.boost.org/LICENSE_1_0.txt). |
| 6 | // |
| 7 | // See http://www.boost.org/libs/type_traits for most recent version including documentation. |
| 8 | |
| 9 | #ifndef BOOST_TT_HAS_NEW_OPERATOR_HPP_INCLUDED |
| 10 | #define BOOST_TT_HAS_NEW_OPERATOR_HPP_INCLUDED |
| 11 | |
| 12 | #include <new> // std::nothrow_t |
| 13 | #include <cstddef> // std::size_t |
| 14 | #include <ndnboost/type_traits/config.hpp> |
| 15 | #include <ndnboost/type_traits/detail/yes_no_type.hpp> |
| 16 | #include <ndnboost/type_traits/detail/ice_or.hpp> |
| 17 | |
| 18 | // should be the last #include |
| 19 | #include <ndnboost/type_traits/detail/bool_trait_def.hpp> |
| 20 | |
| 21 | namespace ndnboost { |
| 22 | namespace detail { |
| 23 | template <class U, U x> |
| 24 | struct test; |
| 25 | |
| 26 | template <typename T> |
| 27 | struct has_new_operator_impl { |
| 28 | template<class U> |
| 29 | static type_traits::yes_type check_sig1( |
| 30 | U*, |
| 31 | test< |
| 32 | void *(*)(std::size_t), |
| 33 | &U::operator new |
| 34 | >* = NULL |
| 35 | ); |
| 36 | template<class U> |
| 37 | static type_traits::no_type check_sig1(...); |
| 38 | |
| 39 | template<class U> |
| 40 | static type_traits::yes_type check_sig2( |
| 41 | U*, |
| 42 | test< |
| 43 | void *(*)(std::size_t, const std::nothrow_t&), |
| 44 | &U::operator new |
| 45 | >* = NULL |
| 46 | ); |
| 47 | template<class U> |
| 48 | static type_traits::no_type check_sig2(...); |
| 49 | |
| 50 | template<class U> |
| 51 | static type_traits::yes_type check_sig3( |
| 52 | U*, |
| 53 | test< |
| 54 | void *(*)(std::size_t, void*), |
| 55 | &U::operator new |
| 56 | >* = NULL |
| 57 | ); |
| 58 | template<class U> |
| 59 | static type_traits::no_type check_sig3(...); |
| 60 | |
| 61 | |
| 62 | template<class U> |
| 63 | static type_traits::yes_type check_sig4( |
| 64 | U*, |
| 65 | test< |
| 66 | void *(*)(std::size_t), |
| 67 | &U::operator new[] |
| 68 | >* = NULL |
| 69 | ); |
| 70 | template<class U> |
| 71 | static type_traits::no_type check_sig4(...); |
| 72 | |
| 73 | template<class U> |
| 74 | static type_traits::yes_type check_sig5( |
| 75 | U*, |
| 76 | test< |
| 77 | void *(*)(std::size_t, const std::nothrow_t&), |
| 78 | &U::operator new[] |
| 79 | >* = NULL |
| 80 | ); |
| 81 | template<class U> |
| 82 | static type_traits::no_type check_sig5(...); |
| 83 | |
| 84 | template<class U> |
| 85 | static type_traits::yes_type check_sig6( |
| 86 | U*, |
| 87 | test< |
| 88 | void *(*)(std::size_t, void*), |
| 89 | &U::operator new[] |
| 90 | >* = NULL |
| 91 | ); |
| 92 | template<class U> |
| 93 | static type_traits::no_type check_sig6(...); |
| 94 | |
| 95 | // GCC2 won't even parse this template if we embed the computation |
| 96 | // of s1 in the computation of value. |
| 97 | #ifdef __GNUC__ |
| 98 | BOOST_STATIC_CONSTANT(unsigned, s1 = sizeof(has_new_operator_impl<T>::template check_sig1<T>(0))); |
| 99 | BOOST_STATIC_CONSTANT(unsigned, s2 = sizeof(has_new_operator_impl<T>::template check_sig2<T>(0))); |
| 100 | BOOST_STATIC_CONSTANT(unsigned, s3 = sizeof(has_new_operator_impl<T>::template check_sig3<T>(0))); |
| 101 | BOOST_STATIC_CONSTANT(unsigned, s4 = sizeof(has_new_operator_impl<T>::template check_sig4<T>(0))); |
| 102 | BOOST_STATIC_CONSTANT(unsigned, s5 = sizeof(has_new_operator_impl<T>::template check_sig5<T>(0))); |
| 103 | BOOST_STATIC_CONSTANT(unsigned, s6 = sizeof(has_new_operator_impl<T>::template check_sig6<T>(0))); |
| 104 | #else |
| 105 | #if BOOST_WORKAROUND(BOOST_MSVC_FULL_VER, >= 140050000) |
| 106 | #pragma warning(push) |
| 107 | #pragma warning(disable:6334) |
| 108 | #endif |
| 109 | |
| 110 | BOOST_STATIC_CONSTANT(unsigned, s1 = sizeof(check_sig1<T>(0))); |
| 111 | BOOST_STATIC_CONSTANT(unsigned, s2 = sizeof(check_sig2<T>(0))); |
| 112 | BOOST_STATIC_CONSTANT(unsigned, s3 = sizeof(check_sig3<T>(0))); |
| 113 | BOOST_STATIC_CONSTANT(unsigned, s4 = sizeof(check_sig4<T>(0))); |
| 114 | BOOST_STATIC_CONSTANT(unsigned, s5 = sizeof(check_sig5<T>(0))); |
| 115 | BOOST_STATIC_CONSTANT(unsigned, s6 = sizeof(check_sig6<T>(0))); |
| 116 | |
| 117 | #if BOOST_WORKAROUND(BOOST_MSVC_FULL_VER, >= 140050000) |
| 118 | #pragma warning(pop) |
| 119 | #endif |
| 120 | #endif |
| 121 | BOOST_STATIC_CONSTANT(bool, value = |
| 122 | (::ndnboost::type_traits::ice_or< |
| 123 | (s1 == sizeof(type_traits::yes_type)), |
| 124 | (s2 == sizeof(type_traits::yes_type)), |
| 125 | (s3 == sizeof(type_traits::yes_type)), |
| 126 | (s4 == sizeof(type_traits::yes_type)), |
| 127 | (s5 == sizeof(type_traits::yes_type)), |
| 128 | (s6 == sizeof(type_traits::yes_type)) |
| 129 | >::value) |
| 130 | ); |
| 131 | }; |
| 132 | } // namespace detail |
| 133 | |
| 134 | BOOST_TT_AUX_BOOL_TRAIT_DEF1(has_new_operator,T,::ndnboost::detail::has_new_operator_impl<T>::value) |
| 135 | |
| 136 | } // namespace ndnboost |
| 137 | |
| 138 | #include <ndnboost/type_traits/detail/bool_trait_undef.hpp> |
| 139 | |
| 140 | #endif // BOOST_TT_HAS_NEW_OPERATOR_HPP_INCLUDED |