Jeff Thompson | f7d4994 | 2013-08-01 16:47:40 -0700 | [diff] [blame] | 1 | |
| 2 | // (C) Copyright Dave Abrahams, Steve Cleary, Beman Dawes, |
| 3 | // Howard Hinnant and John Maddock 2000. |
| 4 | // (C) Copyright Mat Marcus, Jesse Jones and Adobe Systems Inc 2001 |
| 5 | |
| 6 | // Use, modification and distribution are subject to the Boost Software License, |
| 7 | // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at |
| 8 | // http://www.boost.org/LICENSE_1_0.txt). |
| 9 | // |
| 10 | // See http://www.boost.org/libs/type_traits for most recent version including documentation. |
| 11 | |
| 12 | // Fixed is_pointer, is_reference, is_const, is_volatile, is_same, |
| 13 | // is_member_pointer based on the Simulated Partial Specialization work |
| 14 | // of Mat Marcus and Jesse Jones. See http://opensource.adobe.com or |
| 15 | // http://groups.yahoo.com/group/boost/message/5441 |
| 16 | // Some workarounds in here use ideas suggested from "Generic<Programming>: |
| 17 | // Mappings between Types and Values" |
| 18 | // by Andrei Alexandrescu (see http://www.cuj.com/experts/1810/alexandr.html). |
| 19 | |
| 20 | |
| 21 | #ifndef BOOST_TT_IS_POINTER_HPP_INCLUDED |
| 22 | #define BOOST_TT_IS_POINTER_HPP_INCLUDED |
| 23 | |
Jeff Thompson | 2277ce5 | 2013-08-01 17:34:11 -0700 | [diff] [blame] | 24 | #include <ndnboost/type_traits/is_member_pointer.hpp> |
| 25 | #include <ndnboost/type_traits/detail/ice_and.hpp> |
| 26 | #include <ndnboost/type_traits/detail/ice_not.hpp> |
| 27 | #include <ndnboost/type_traits/config.hpp> |
Jeff Thompson | f7d4994 | 2013-08-01 16:47:40 -0700 | [diff] [blame] | 28 | #if !BOOST_WORKAROUND(BOOST_MSVC,<=1300) |
Jeff Thompson | 2277ce5 | 2013-08-01 17:34:11 -0700 | [diff] [blame] | 29 | #include <ndnboost/type_traits/remove_cv.hpp> |
Jeff Thompson | f7d4994 | 2013-08-01 16:47:40 -0700 | [diff] [blame] | 30 | #endif |
| 31 | |
| 32 | #ifdef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION |
Jeff Thompson | 2277ce5 | 2013-08-01 17:34:11 -0700 | [diff] [blame] | 33 | # include <ndnboost/type_traits/is_reference.hpp> |
| 34 | # include <ndnboost/type_traits/is_array.hpp> |
| 35 | # include <ndnboost/type_traits/detail/is_function_ptr_tester.hpp> |
| 36 | # include <ndnboost/type_traits/detail/false_result.hpp> |
| 37 | # include <ndnboost/type_traits/detail/ice_or.hpp> |
Jeff Thompson | f7d4994 | 2013-08-01 16:47:40 -0700 | [diff] [blame] | 38 | #endif |
| 39 | |
| 40 | // should be the last #include |
Jeff Thompson | 2277ce5 | 2013-08-01 17:34:11 -0700 | [diff] [blame] | 41 | #include <ndnboost/type_traits/detail/bool_trait_def.hpp> |
Jeff Thompson | f7d4994 | 2013-08-01 16:47:40 -0700 | [diff] [blame] | 42 | |
| 43 | namespace ndnboost { |
| 44 | |
| 45 | #if defined( __CODEGEARC__ ) |
| 46 | BOOST_TT_AUX_BOOL_TRAIT_DEF1(is_pointer,T,__is_pointer(T)) |
| 47 | #elif !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) |
| 48 | |
| 49 | namespace detail { |
| 50 | |
| 51 | template< typename T > struct is_pointer_helper |
| 52 | { |
| 53 | BOOST_STATIC_CONSTANT(bool, value = false); |
| 54 | }; |
| 55 | |
| 56 | # define TT_AUX_BOOL_TRAIT_HELPER_PARTIAL_SPEC(helper,sp,result) \ |
| 57 | template< typename T > struct helper<sp> \ |
| 58 | { \ |
| 59 | BOOST_STATIC_CONSTANT(bool, value = result); \ |
| 60 | }; \ |
| 61 | /**/ |
| 62 | |
| 63 | TT_AUX_BOOL_TRAIT_HELPER_PARTIAL_SPEC(is_pointer_helper,T*,true) |
| 64 | |
| 65 | # undef TT_AUX_BOOL_TRAIT_HELPER_PARTIAL_SPEC |
| 66 | |
| 67 | template< typename T > |
| 68 | struct is_pointer_impl |
| 69 | { |
| 70 | #if BOOST_WORKAROUND(BOOST_MSVC,<=1300) |
| 71 | BOOST_STATIC_CONSTANT(bool, value = |
| 72 | (::ndnboost::type_traits::ice_and< |
| 73 | ::ndnboost::detail::is_pointer_helper<T>::value |
| 74 | , ::ndnboost::type_traits::ice_not< |
| 75 | ::ndnboost::is_member_pointer<T>::value |
| 76 | >::value |
| 77 | >::value) |
| 78 | ); |
| 79 | #else |
| 80 | BOOST_STATIC_CONSTANT(bool, value = |
| 81 | (::ndnboost::type_traits::ice_and< |
| 82 | ::ndnboost::detail::is_pointer_helper<typename remove_cv<T>::type>::value |
| 83 | , ::ndnboost::type_traits::ice_not< |
| 84 | ::ndnboost::is_member_pointer<T>::value |
| 85 | >::value |
| 86 | >::value) |
| 87 | ); |
| 88 | #endif |
| 89 | }; |
| 90 | |
| 91 | } // namespace detail |
| 92 | |
| 93 | BOOST_TT_AUX_BOOL_TRAIT_DEF1(is_pointer,T,::ndnboost::detail::is_pointer_impl<T>::value) |
| 94 | |
| 95 | #if defined(__BORLANDC__) && !defined(__COMO__) && (__BORLANDC__ < 0x600) |
| 96 | BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC1_1(typename T,is_pointer,T&,false) |
| 97 | BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC1_1(typename T,is_pointer,T& const,false) |
| 98 | BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC1_1(typename T,is_pointer,T& volatile,false) |
| 99 | BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC1_1(typename T,is_pointer,T& const volatile,false) |
| 100 | #endif |
| 101 | |
| 102 | #else // no partial template specialization |
| 103 | |
| 104 | namespace detail { |
| 105 | |
| 106 | struct pointer_helper |
| 107 | { |
| 108 | pointer_helper(const volatile void*); |
| 109 | }; |
| 110 | |
| 111 | yes_type BOOST_TT_DECL is_pointer_tester(pointer_helper); |
| 112 | no_type BOOST_TT_DECL is_pointer_tester(...); |
| 113 | |
| 114 | template <bool> |
| 115 | struct is_pointer_select |
| 116 | : public ::ndnboost::type_traits::false_result |
| 117 | { |
| 118 | }; |
| 119 | |
| 120 | template <> |
| 121 | struct is_pointer_select<false> |
| 122 | { |
| 123 | template <typename T> struct result_ |
| 124 | { |
| 125 | static T& make_t(); |
| 126 | BOOST_STATIC_CONSTANT(bool, value = |
| 127 | (::ndnboost::type_traits::ice_or< |
| 128 | (1 == sizeof(is_pointer_tester(make_t()))), |
| 129 | (1 == sizeof(type_traits::is_function_ptr_tester(make_t()))) |
| 130 | >::value)); |
| 131 | }; |
| 132 | }; |
| 133 | |
| 134 | template <typename T> |
| 135 | struct is_pointer_impl |
| 136 | : public is_pointer_select< |
| 137 | ::ndnboost::type_traits::ice_or< |
| 138 | ::ndnboost::is_reference<T>::value |
| 139 | , ::ndnboost::is_array<T>::value |
| 140 | >::value |
| 141 | >::template result_<T> |
| 142 | { |
| 143 | }; |
| 144 | |
| 145 | BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_pointer,void,false) |
| 146 | #ifndef BOOST_NO_CV_VOID_SPECIALIZATIONS |
| 147 | BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_pointer,void const,false) |
| 148 | BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_pointer,void volatile,false) |
| 149 | BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_pointer,void const volatile,false) |
| 150 | #endif |
| 151 | |
| 152 | } // namespace detail |
| 153 | |
| 154 | BOOST_TT_AUX_BOOL_TRAIT_DEF1(is_pointer,T,::ndnboost::detail::is_pointer_impl<T>::value) |
| 155 | |
| 156 | #endif // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION |
| 157 | |
| 158 | } // namespace ndnboost |
| 159 | |
Jeff Thompson | 2277ce5 | 2013-08-01 17:34:11 -0700 | [diff] [blame] | 160 | #include <ndnboost/type_traits/detail/bool_trait_undef.hpp> |
Jeff Thompson | f7d4994 | 2013-08-01 16:47:40 -0700 | [diff] [blame] | 161 | |
| 162 | #endif // BOOST_TT_IS_POINTER_HPP_INCLUDED |