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_VOLATILE_HPP_INCLUDED |
| 22 | #define BOOST_TT_IS_VOLATILE_HPP_INCLUDED |
| 23 | |
Jeff Thompson | 2277ce5 | 2013-08-01 17:34:11 -0700 | [diff] [blame] | 24 | #include <ndnboost/config.hpp> |
| 25 | #include <ndnboost/detail/workaround.hpp> |
Jeff Thompson | f7d4994 | 2013-08-01 16:47:40 -0700 | [diff] [blame] | 26 | |
| 27 | #ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION |
Jeff Thompson | 2277ce5 | 2013-08-01 17:34:11 -0700 | [diff] [blame] | 28 | # include <ndnboost/type_traits/detail/cv_traits_impl.hpp> |
Jeff Thompson | f7d4994 | 2013-08-01 16:47:40 -0700 | [diff] [blame] | 29 | # if BOOST_WORKAROUND(BOOST_MSVC, < 1400) |
Jeff Thompson | 2277ce5 | 2013-08-01 17:34:11 -0700 | [diff] [blame] | 30 | # include <ndnboost/type_traits/remove_bounds.hpp> |
Jeff Thompson | f7d4994 | 2013-08-01 16:47:40 -0700 | [diff] [blame] | 31 | # endif |
| 32 | #else |
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/yes_no_type.hpp> |
| 36 | # include <ndnboost/type_traits/detail/false_result.hpp> |
Jeff Thompson | f7d4994 | 2013-08-01 16:47:40 -0700 | [diff] [blame] | 37 | #endif |
| 38 | |
| 39 | // should be the last #include |
Jeff Thompson | 2277ce5 | 2013-08-01 17:34:11 -0700 | [diff] [blame] | 40 | #include <ndnboost/type_traits/detail/bool_trait_def.hpp> |
Jeff Thompson | f7d4994 | 2013-08-01 16:47:40 -0700 | [diff] [blame] | 41 | |
| 42 | namespace ndnboost { |
| 43 | |
| 44 | namespace detail{ |
| 45 | template <class T> |
| 46 | struct is_volatile_rval_filter |
| 47 | { |
| 48 | #if BOOST_WORKAROUND(BOOST_MSVC, < 1400) |
| 49 | BOOST_STATIC_CONSTANT(bool, value = ::ndnboost::detail::cv_traits_imp<typename ndnboost::remove_bounds<T>::type*>::is_volatile); |
| 50 | #else |
| 51 | BOOST_STATIC_CONSTANT(bool, value = ::ndnboost::detail::cv_traits_imp<T*>::is_volatile); |
| 52 | #endif |
| 53 | }; |
| 54 | #ifndef BOOST_NO_CXX11_RVALUE_REFERENCES |
| 55 | // |
| 56 | // We can't filter out rvalue_references at the same level as |
| 57 | // references or we get ambiguities from msvc: |
| 58 | // |
| 59 | template <class T> |
| 60 | struct is_volatile_rval_filter<T&&> |
| 61 | { |
| 62 | BOOST_STATIC_CONSTANT(bool, value = false); |
| 63 | }; |
| 64 | #endif |
| 65 | } |
| 66 | |
| 67 | #if defined( __CODEGEARC__ ) |
| 68 | BOOST_TT_AUX_BOOL_TRAIT_DEF1(is_volatile,T,__is_volatile(T)) |
| 69 | #elif !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) |
| 70 | |
| 71 | //* is a type T declared volatile - is_volatile<T> |
| 72 | BOOST_TT_AUX_BOOL_TRAIT_DEF1(is_volatile,T,::ndnboost::detail::is_volatile_rval_filter<T>::value) |
| 73 | BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC1_1(typename T,is_volatile,T&,false) |
| 74 | |
| 75 | #if defined(BOOST_ILLEGAL_CV_REFERENCES) |
| 76 | // these are illegal specialisations; cv-qualifies applied to |
| 77 | // references have no effect according to [8.3.2p1], |
| 78 | // C++ Builder requires them though as it treats cv-qualified |
| 79 | // references as distinct types... |
| 80 | BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC1_1(typename T,is_volatile,T& const,false) |
| 81 | BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC1_1(typename T,is_volatile,T& volatile,false) |
| 82 | BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC1_1(typename T,is_volatile,T& const volatile,false) |
| 83 | #endif |
| 84 | |
| 85 | #else |
| 86 | |
| 87 | namespace detail { |
| 88 | |
| 89 | using ::ndnboost::type_traits::yes_type; |
| 90 | using ::ndnboost::type_traits::no_type; |
| 91 | |
| 92 | yes_type is_volatile_tester(void const volatile*); |
| 93 | no_type is_volatile_tester(void const*); |
| 94 | |
| 95 | template <bool is_ref, bool array> |
| 96 | struct is_volatile_helper |
| 97 | : public ::ndnboost::type_traits::false_result |
| 98 | { |
| 99 | }; |
| 100 | |
| 101 | template <> |
| 102 | struct is_volatile_helper<false,false> |
| 103 | { |
| 104 | template <typename T> struct result_ |
| 105 | { |
| 106 | static T* t; |
| 107 | BOOST_STATIC_CONSTANT(bool, value = ( |
| 108 | sizeof(ndnboost::detail::yes_type) == sizeof(ndnboost::detail::is_volatile_tester(t)) |
| 109 | )); |
| 110 | }; |
| 111 | }; |
| 112 | |
| 113 | template <> |
| 114 | struct is_volatile_helper<false,true> |
| 115 | { |
| 116 | template <typename T> struct result_ |
| 117 | { |
| 118 | static T t; |
| 119 | BOOST_STATIC_CONSTANT(bool, value = ( |
| 120 | sizeof(ndnboost::detail::yes_type) == sizeof(ndnboost::detail::is_volatile_tester(&t)) |
| 121 | )); |
| 122 | }; |
| 123 | }; |
| 124 | |
| 125 | template <typename T> |
| 126 | struct is_volatile_impl |
| 127 | : public is_volatile_helper< |
| 128 | is_reference<T>::value |
| 129 | , is_array<T>::value |
| 130 | >::template result_<T> |
| 131 | { |
| 132 | }; |
| 133 | |
| 134 | BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_volatile,void,false) |
| 135 | #ifndef BOOST_NO_CV_VOID_SPECIALIZATIONS |
| 136 | BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_volatile,void const,false) |
| 137 | BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_volatile,void volatile,true) |
| 138 | BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_volatile,void const volatile,true) |
| 139 | #endif |
| 140 | |
| 141 | } // namespace detail |
| 142 | |
| 143 | //* is a type T declared volatile - is_volatile<T> |
| 144 | BOOST_TT_AUX_BOOL_TRAIT_DEF1(is_volatile,T,::ndnboost::detail::is_volatile_impl<T>::value) |
| 145 | |
| 146 | #endif // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION |
| 147 | |
| 148 | } // namespace ndnboost |
| 149 | |
Jeff Thompson | 2277ce5 | 2013-08-01 17:34:11 -0700 | [diff] [blame] | 150 | #include <ndnboost/type_traits/detail/bool_trait_undef.hpp> |
Jeff Thompson | f7d4994 | 2013-08-01 16:47:40 -0700 | [diff] [blame] | 151 | |
| 152 | #endif // BOOST_TT_IS_VOLATILE_HPP_INCLUDED |