| |
| // (C) Copyright Steve Cleary, Beman Dawes, Howard Hinnant & John Maddock 2000. |
| // 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. |
| |
| #ifndef BOOST_TT_IS_POD_HPP_INCLUDED |
| #define BOOST_TT_IS_POD_HPP_INCLUDED |
| |
| #include <ndnboost/type_traits/config.hpp> |
| #include <ndnboost/type_traits/is_void.hpp> |
| #include <ndnboost/type_traits/is_scalar.hpp> |
| #include <ndnboost/type_traits/detail/ice_or.hpp> |
| #include <ndnboost/type_traits/intrinsics.hpp> |
| |
| #include <cstddef> |
| |
| // should be the last #include |
| #include <ndnboost/type_traits/detail/bool_trait_def.hpp> |
| |
| #ifndef BOOST_IS_POD |
| #define BOOST_INTERNAL_IS_POD(T) false |
| #else |
| #define BOOST_INTERNAL_IS_POD(T) BOOST_IS_POD(T) |
| #endif |
| |
| namespace ndnboost { |
| |
| // forward declaration, needed by 'is_pod_array_helper' template below |
| template< typename T > struct is_POD; |
| |
| namespace detail { |
| |
| #ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION |
| |
| template <typename T> struct is_pod_impl |
| { |
| BOOST_STATIC_CONSTANT( |
| bool, value = |
| (::ndnboost::type_traits::ice_or< |
| ::ndnboost::is_scalar<T>::value, |
| ::ndnboost::is_void<T>::value, |
| BOOST_INTERNAL_IS_POD(T) |
| >::value)); |
| }; |
| |
| #if !defined(BOOST_NO_ARRAY_TYPE_SPECIALIZATIONS) |
| template <typename T, std::size_t sz> |
| struct is_pod_impl<T[sz]> |
| : public is_pod_impl<T> |
| { |
| }; |
| #endif |
| |
| #else |
| |
| template <bool is_array = false> |
| struct is_pod_helper |
| { |
| template <typename T> struct result_ |
| { |
| BOOST_STATIC_CONSTANT( |
| bool, value = |
| (::ndnboost::type_traits::ice_or< |
| ::ndnboost::is_scalar<T>::value, |
| ::ndnboost::is_void<T>::value, |
| BOOST_INTERNAL_IS_POD(T) |
| >::value)); |
| }; |
| }; |
| |
| template <bool b> |
| struct bool_to_yes_no_type |
| { |
| typedef ::ndnboost::type_traits::no_type type; |
| }; |
| |
| template <> |
| struct bool_to_yes_no_type<true> |
| { |
| typedef ::ndnboost::type_traits::yes_type type; |
| }; |
| |
| template <typename ArrayType> |
| struct is_pod_array_helper |
| { |
| enum { is_pod = ::ndnboost::is_POD<ArrayType>::value }; // MSVC workaround |
| typedef typename bool_to_yes_no_type<is_pod>::type type; |
| type instance() const; |
| }; |
| |
| template <typename T> |
| is_pod_array_helper<T> is_POD_array(T*); |
| |
| template <> |
| struct is_pod_helper<true> |
| { |
| template <typename T> struct result_ |
| { |
| static T& help(); |
| BOOST_STATIC_CONSTANT(bool, value = |
| sizeof(is_POD_array(help()).instance()) == sizeof(::ndnboost::type_traits::yes_type) |
| ); |
| }; |
| }; |
| |
| |
| template <typename T> struct is_pod_impl |
| { |
| BOOST_STATIC_CONSTANT( |
| bool, value = ( |
| ::ndnboost::detail::is_pod_helper< |
| ::ndnboost::is_array<T>::value |
| >::template result_<T>::value |
| ) |
| ); |
| }; |
| |
| #endif // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION |
| |
| // the following help compilers without partial specialization support: |
| BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_pod,void,true) |
| |
| #ifndef BOOST_NO_CV_VOID_SPECIALIZATIONS |
| BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_pod,void const,true) |
| BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_pod,void volatile,true) |
| BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_pod,void const volatile,true) |
| #endif |
| |
| } // namespace detail |
| |
| BOOST_TT_AUX_BOOL_TRAIT_DEF1(is_pod,T,::ndnboost::detail::is_pod_impl<T>::value) |
| // is_POD is the old depricated name for this trait, do not use this as it may |
| // be removed in future without warning!! |
| BOOST_TT_AUX_BOOL_TRAIT_DEF1(is_POD,T,::ndnboost::is_pod<T>::value) |
| |
| } // namespace ndnboost |
| |
| #include <ndnboost/type_traits/detail/bool_trait_undef.hpp> |
| |
| #undef BOOST_INTERNAL_IS_POD |
| |
| #endif // BOOST_TT_IS_POD_HPP_INCLUDED |