Jeff Thompson | f7d4994 | 2013-08-01 16:47:40 -0700 | [diff] [blame] | 1 | // (C) Copyright Dave Abrahams, Steve Cleary, Beman Dawes, Howard |
| 2 | // Hinnant & John Maddock 2000-2003. |
| 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 | |
| 10 | #ifndef BOOST_TT_IS_CLASS_HPP_INCLUDED |
| 11 | #define BOOST_TT_IS_CLASS_HPP_INCLUDED |
| 12 | |
Jeff Thompson | 2277ce5 | 2013-08-01 17:34:11 -0700 | [diff] [blame] | 13 | #include <ndnboost/type_traits/config.hpp> |
| 14 | #include <ndnboost/type_traits/intrinsics.hpp> |
Jeff Thompson | f7d4994 | 2013-08-01 16:47:40 -0700 | [diff] [blame] | 15 | #ifndef BOOST_IS_CLASS |
Jeff Thompson | 2277ce5 | 2013-08-01 17:34:11 -0700 | [diff] [blame] | 16 | # include <ndnboost/type_traits/is_union.hpp> |
| 17 | # include <ndnboost/type_traits/detail/ice_and.hpp> |
| 18 | # include <ndnboost/type_traits/detail/ice_not.hpp> |
Jeff Thompson | f7d4994 | 2013-08-01 16:47:40 -0700 | [diff] [blame] | 19 | |
| 20 | #ifdef BOOST_TT_HAS_CONFORMING_IS_CLASS_IMPLEMENTATION |
Jeff Thompson | 2277ce5 | 2013-08-01 17:34:11 -0700 | [diff] [blame] | 21 | # include <ndnboost/type_traits/detail/yes_no_type.hpp> |
Jeff Thompson | f7d4994 | 2013-08-01 16:47:40 -0700 | [diff] [blame] | 22 | #else |
Jeff Thompson | 2277ce5 | 2013-08-01 17:34:11 -0700 | [diff] [blame] | 23 | # include <ndnboost/type_traits/is_scalar.hpp> |
| 24 | # include <ndnboost/type_traits/is_array.hpp> |
| 25 | # include <ndnboost/type_traits/is_reference.hpp> |
| 26 | # include <ndnboost/type_traits/is_void.hpp> |
| 27 | # include <ndnboost/type_traits/is_function.hpp> |
Jeff Thompson | f7d4994 | 2013-08-01 16:47:40 -0700 | [diff] [blame] | 28 | #endif |
| 29 | |
| 30 | #endif // BOOST_IS_CLASS |
| 31 | |
| 32 | #ifdef __EDG_VERSION__ |
Jeff Thompson | 2277ce5 | 2013-08-01 17:34:11 -0700 | [diff] [blame] | 33 | # include <ndnboost/type_traits/remove_cv.hpp> |
Jeff Thompson | f7d4994 | 2013-08-01 16:47:40 -0700 | [diff] [blame] | 34 | #endif |
| 35 | |
| 36 | // should be the last #include |
Jeff Thompson | 2277ce5 | 2013-08-01 17:34:11 -0700 | [diff] [blame] | 37 | #include <ndnboost/type_traits/detail/bool_trait_def.hpp> |
Jeff Thompson | f7d4994 | 2013-08-01 16:47:40 -0700 | [diff] [blame] | 38 | |
| 39 | namespace ndnboost { |
| 40 | |
| 41 | namespace detail { |
| 42 | |
| 43 | #ifndef BOOST_IS_CLASS |
| 44 | #ifdef BOOST_TT_HAS_CONFORMING_IS_CLASS_IMPLEMENTATION |
| 45 | |
| 46 | // This is actually the conforming implementation which works with |
| 47 | // abstract classes. However, enough compilers have trouble with |
| 48 | // it that most will use the one in |
| 49 | // boost/type_traits/object_traits.hpp. This implementation |
| 50 | // actually works with VC7.0, but other interactions seem to fail |
| 51 | // when we use it. |
| 52 | |
| 53 | // is_class<> metafunction due to Paul Mensonides |
| 54 | // (leavings@attbi.com). For more details: |
| 55 | // http://groups.google.com/groups?hl=en&selm=000001c1cc83%24e154d5e0%247772e50c%40c161550a&rnum=1 |
| 56 | #if defined(__GNUC__) && !defined(__EDG_VERSION__) |
| 57 | |
| 58 | template <class U> ::ndnboost::type_traits::yes_type is_class_tester(void(U::*)(void)); |
| 59 | template <class U> ::ndnboost::type_traits::no_type is_class_tester(...); |
| 60 | |
| 61 | template <typename T> |
| 62 | struct is_class_impl |
| 63 | { |
| 64 | |
| 65 | BOOST_STATIC_CONSTANT(bool, value = |
| 66 | (::ndnboost::type_traits::ice_and< |
| 67 | sizeof(is_class_tester<T>(0)) == sizeof(::ndnboost::type_traits::yes_type), |
| 68 | ::ndnboost::type_traits::ice_not< ::ndnboost::is_union<T>::value >::value |
| 69 | >::value) |
| 70 | ); |
| 71 | }; |
| 72 | |
| 73 | #else |
| 74 | |
| 75 | template <typename T> |
| 76 | struct is_class_impl |
| 77 | { |
| 78 | template <class U> static ::ndnboost::type_traits::yes_type is_class_tester(void(U::*)(void)); |
| 79 | template <class U> static ::ndnboost::type_traits::no_type is_class_tester(...); |
| 80 | |
| 81 | BOOST_STATIC_CONSTANT(bool, value = |
| 82 | (::ndnboost::type_traits::ice_and< |
| 83 | sizeof(is_class_tester<T>(0)) == sizeof(::ndnboost::type_traits::yes_type), |
| 84 | ::ndnboost::type_traits::ice_not< ::ndnboost::is_union<T>::value >::value |
| 85 | >::value) |
| 86 | ); |
| 87 | }; |
| 88 | |
| 89 | #endif |
| 90 | |
| 91 | #else |
| 92 | |
| 93 | template <typename T> |
| 94 | struct is_class_impl |
| 95 | { |
| 96 | # ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION |
| 97 | BOOST_STATIC_CONSTANT(bool, value = |
| 98 | (::ndnboost::type_traits::ice_and< |
| 99 | ::ndnboost::type_traits::ice_not< ::ndnboost::is_union<T>::value >::value, |
| 100 | ::ndnboost::type_traits::ice_not< ::ndnboost::is_scalar<T>::value >::value, |
| 101 | ::ndnboost::type_traits::ice_not< ::ndnboost::is_array<T>::value >::value, |
| 102 | ::ndnboost::type_traits::ice_not< ::ndnboost::is_reference<T>::value>::value, |
| 103 | ::ndnboost::type_traits::ice_not< ::ndnboost::is_void<T>::value >::value, |
| 104 | ::ndnboost::type_traits::ice_not< ::ndnboost::is_function<T>::value >::value |
| 105 | >::value)); |
| 106 | # else |
| 107 | BOOST_STATIC_CONSTANT(bool, value = |
| 108 | (::ndnboost::type_traits::ice_and< |
| 109 | ::ndnboost::type_traits::ice_not< ::ndnboost::is_union<T>::value >::value, |
| 110 | ::ndnboost::type_traits::ice_not< ::ndnboost::is_scalar<T>::value >::value, |
| 111 | ::ndnboost::type_traits::ice_not< ::ndnboost::is_array<T>::value >::value, |
| 112 | ::ndnboost::type_traits::ice_not< ::ndnboost::is_reference<T>::value>::value, |
| 113 | ::ndnboost::type_traits::ice_not< ::ndnboost::is_void<T>::value >::value |
| 114 | >::value)); |
| 115 | # endif |
| 116 | }; |
| 117 | |
| 118 | # endif // BOOST_TT_HAS_CONFORMING_IS_CLASS_IMPLEMENTATION |
| 119 | # else // BOOST_IS_CLASS |
| 120 | template <typename T> |
| 121 | struct is_class_impl |
| 122 | { |
| 123 | BOOST_STATIC_CONSTANT(bool, value = BOOST_IS_CLASS(T)); |
| 124 | }; |
| 125 | # endif // BOOST_IS_CLASS |
| 126 | |
| 127 | } // namespace detail |
| 128 | |
| 129 | # ifdef __EDG_VERSION__ |
| 130 | BOOST_TT_AUX_BOOL_TRAIT_DEF1( |
| 131 | is_class,T, ndnboost::detail::is_class_impl<typename ndnboost::remove_cv<T>::type>::value) |
| 132 | # else |
| 133 | BOOST_TT_AUX_BOOL_TRAIT_DEF1(is_class,T,::ndnboost::detail::is_class_impl<T>::value) |
| 134 | # endif |
| 135 | |
| 136 | } // namespace ndnboost |
| 137 | |
Jeff Thompson | 2277ce5 | 2013-08-01 17:34:11 -0700 | [diff] [blame] | 138 | #include <ndnboost/type_traits/detail/bool_trait_undef.hpp> |
Jeff Thompson | f7d4994 | 2013-08-01 16:47:40 -0700 | [diff] [blame] | 139 | |
| 140 | #endif // BOOST_TT_IS_CLASS_HPP_INCLUDED |