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Diffstat (limited to 'libcutl/cutl/details/boost/type_traits/is_pod.hpp')
-rw-r--r-- | libcutl/cutl/details/boost/type_traits/is_pod.hpp | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/libcutl/cutl/details/boost/type_traits/is_pod.hpp b/libcutl/cutl/details/boost/type_traits/is_pod.hpp new file mode 100644 index 0000000..6cb954e --- /dev/null +++ b/libcutl/cutl/details/boost/type_traits/is_pod.hpp @@ -0,0 +1,145 @@ + +// (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 <cutl/details/boost/type_traits/config.hpp> +#include <cutl/details/boost/type_traits/is_void.hpp> +#include <cutl/details/boost/type_traits/is_scalar.hpp> +#include <cutl/details/boost/type_traits/detail/ice_or.hpp> +#include <cutl/details/boost/type_traits/intrinsics.hpp> + +#include <cstddef> + +// should be the last #include +#include <cutl/details/boost/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 cutl_details_boost { + +// 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 = + (::cutl_details_boost::type_traits::ice_or< + ::cutl_details_boost::is_scalar<T>::value, + ::cutl_details_boost::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 = + (::cutl_details_boost::type_traits::ice_or< + ::cutl_details_boost::is_scalar<T>::value, + ::cutl_details_boost::is_void<T>::value, + BOOST_INTERNAL_IS_POD(T) + >::value)); + }; +}; + +template <bool b> +struct bool_to_yes_no_type +{ + typedef ::cutl_details_boost::type_traits::no_type type; +}; + +template <> +struct bool_to_yes_no_type<true> +{ + typedef ::cutl_details_boost::type_traits::yes_type type; +}; + +template <typename ArrayType> +struct is_pod_array_helper +{ + enum { is_pod = ::cutl_details_boost::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(::cutl_details_boost::type_traits::yes_type) + ); + }; +}; + + +template <typename T> struct is_pod_impl +{ + BOOST_STATIC_CONSTANT( + bool, value = ( + ::cutl_details_boost::detail::is_pod_helper< + ::cutl_details_boost::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,::cutl_details_boost::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,::cutl_details_boost::is_pod<T>::value) + +} // namespace cutl_details_boost + +#include <cutl/details/boost/type_traits/detail/bool_trait_undef.hpp> + +#undef BOOST_INTERNAL_IS_POD + +#endif // BOOST_TT_IS_POD_HPP_INCLUDED |