| |
| // (C) Copyright Dave Abrahams, Steve Cleary, Beman Dawes, |
| // Howard Hinnant and John Maddock 2000. |
| // (C) Copyright Mat Marcus, Jesse Jones and Adobe Systems Inc 2001 |
| |
| // Use, modification and distribution are subject to the Boost Software License, |
| // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at |
| // http://www.boost.org/LICENSE_1_0.txt). |
| // |
| // See http://www.boost.org/libs/type_traits for most recent version including documentation. |
| |
| // Fixed is_pointer, is_reference, is_const, is_volatile, is_same, |
| // is_member_pointer based on the Simulated Partial Specialization work |
| // of Mat Marcus and Jesse Jones. See http://opensource.adobe.com or |
| // http://groups.yahoo.com/group/boost/message/5441 |
| // Some workarounds in here use ideas suggested from "Generic<Programming>: |
| // Mappings between Types and Values" |
| // by Andrei Alexandrescu (see http://www.cuj.com/experts/1810/alexandr.html). |
| |
| |
| #ifndef BOOST_TT_IS_VOLATILE_HPP_INCLUDED |
| #define BOOST_TT_IS_VOLATILE_HPP_INCLUDED |
| |
| #include <ndnboost/config.hpp> |
| #include <ndnboost/detail/workaround.hpp> |
| |
| #ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION |
| # include <ndnboost/type_traits/detail/cv_traits_impl.hpp> |
| # if BOOST_WORKAROUND(BOOST_MSVC, < 1400) |
| # include <ndnboost/type_traits/remove_bounds.hpp> |
| # endif |
| #else |
| # include <ndnboost/type_traits/is_reference.hpp> |
| # include <ndnboost/type_traits/is_array.hpp> |
| # include <ndnboost/type_traits/detail/yes_no_type.hpp> |
| # include <ndnboost/type_traits/detail/false_result.hpp> |
| #endif |
| |
| // should be the last #include |
| #include <ndnboost/type_traits/detail/bool_trait_def.hpp> |
| |
| namespace ndnboost { |
| |
| namespace detail{ |
| template <class T> |
| struct is_volatile_rval_filter |
| { |
| #if BOOST_WORKAROUND(BOOST_MSVC, < 1400) |
| BOOST_STATIC_CONSTANT(bool, value = ::ndnboost::detail::cv_traits_imp<typename ndnboost::remove_bounds<T>::type*>::is_volatile); |
| #else |
| BOOST_STATIC_CONSTANT(bool, value = ::ndnboost::detail::cv_traits_imp<T*>::is_volatile); |
| #endif |
| }; |
| #ifndef BOOST_NO_CXX11_RVALUE_REFERENCES |
| // |
| // We can't filter out rvalue_references at the same level as |
| // references or we get ambiguities from msvc: |
| // |
| template <class T> |
| struct is_volatile_rval_filter<T&&> |
| { |
| BOOST_STATIC_CONSTANT(bool, value = false); |
| }; |
| #endif |
| } |
| |
| #if defined( __CODEGEARC__ ) |
| BOOST_TT_AUX_BOOL_TRAIT_DEF1(is_volatile,T,__is_volatile(T)) |
| #elif !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) |
| |
| //* is a type T declared volatile - is_volatile<T> |
| BOOST_TT_AUX_BOOL_TRAIT_DEF1(is_volatile,T,::ndnboost::detail::is_volatile_rval_filter<T>::value) |
| BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC1_1(typename T,is_volatile,T&,false) |
| |
| #if defined(BOOST_ILLEGAL_CV_REFERENCES) |
| // these are illegal specialisations; cv-qualifies applied to |
| // references have no effect according to [8.3.2p1], |
| // C++ Builder requires them though as it treats cv-qualified |
| // references as distinct types... |
| BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC1_1(typename T,is_volatile,T& const,false) |
| BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC1_1(typename T,is_volatile,T& volatile,false) |
| BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC1_1(typename T,is_volatile,T& const volatile,false) |
| #endif |
| |
| #else |
| |
| namespace detail { |
| |
| using ::ndnboost::type_traits::yes_type; |
| using ::ndnboost::type_traits::no_type; |
| |
| yes_type is_volatile_tester(void const volatile*); |
| no_type is_volatile_tester(void const*); |
| |
| template <bool is_ref, bool array> |
| struct is_volatile_helper |
| : public ::ndnboost::type_traits::false_result |
| { |
| }; |
| |
| template <> |
| struct is_volatile_helper<false,false> |
| { |
| template <typename T> struct result_ |
| { |
| static T* t; |
| BOOST_STATIC_CONSTANT(bool, value = ( |
| sizeof(ndnboost::detail::yes_type) == sizeof(ndnboost::detail::is_volatile_tester(t)) |
| )); |
| }; |
| }; |
| |
| template <> |
| struct is_volatile_helper<false,true> |
| { |
| template <typename T> struct result_ |
| { |
| static T t; |
| BOOST_STATIC_CONSTANT(bool, value = ( |
| sizeof(ndnboost::detail::yes_type) == sizeof(ndnboost::detail::is_volatile_tester(&t)) |
| )); |
| }; |
| }; |
| |
| template <typename T> |
| struct is_volatile_impl |
| : public is_volatile_helper< |
| is_reference<T>::value |
| , is_array<T>::value |
| >::template result_<T> |
| { |
| }; |
| |
| BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_volatile,void,false) |
| #ifndef BOOST_NO_CV_VOID_SPECIALIZATIONS |
| BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_volatile,void const,false) |
| BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_volatile,void volatile,true) |
| BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_volatile,void const volatile,true) |
| #endif |
| |
| } // namespace detail |
| |
| //* is a type T declared volatile - is_volatile<T> |
| BOOST_TT_AUX_BOOL_TRAIT_DEF1(is_volatile,T,::ndnboost::detail::is_volatile_impl<T>::value) |
| |
| #endif // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION |
| |
| } // namespace ndnboost |
| |
| #include <ndnboost/type_traits/detail/bool_trait_undef.hpp> |
| |
| #endif // BOOST_TT_IS_VOLATILE_HPP_INCLUDED |