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路径: \\game3dprogramming\materials\GameFactory\GameFactoryDemo\references\boost_1_35_0\boost\type_traits\is_class.hpp
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// (C) Copyright Dave Abrahams, Steve Cleary, Beman Dawes, Howard // Hinnant & John Maddock 2000-2003. // 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_CLASS_HPP_INCLUDED #define BOOST_TT_IS_CLASS_HPP_INCLUDED #include
# include
# include
# include
#ifdef BOOST_TT_HAS_CONFORMING_IS_CLASS_IMPLEMENTATION # include
#else # include
# include
# include
# include
# include
#endif #ifdef __EDG_VERSION__ # include
#endif // should be the last #include #include
namespace boost { namespace detail { #ifdef BOOST_TT_HAS_CONFORMING_IS_CLASS_IMPLEMENTATION // This is actually the conforming implementation which works with // abstract classes. However, enough compilers have trouble with // it that most will use the one in // boost/type_traits/object_traits.hpp. This implementation // actually works with VC7.0, but other interactions seem to fail // when we use it. // is_class<> metafunction due to Paul Mensonides // (leavings@attbi.com). For more details: // http://groups.google.com/groups?hl=en&selm=000001c1cc83%24e154d5e0%247772e50c%40c161550a&rnum=1 #if defined(__GNUC__) && !defined(__EDG_VERSION__) template
::boost::type_traits::yes_type is_class_tester(void(U::*)(void)); template
::boost::type_traits::no_type is_class_tester(...); template
struct is_class_impl { BOOST_STATIC_CONSTANT(bool, value = (::boost::type_traits::ice_and< sizeof(is_class_tester
(0)) == sizeof(::boost::type_traits::yes_type), ::boost::type_traits::ice_not< ::boost::is_union
::value >::value >::value) ); }; #else template
struct is_class_impl { template
static ::boost::type_traits::yes_type is_class_tester(void(U::*)(void)); template
static ::boost::type_traits::no_type is_class_tester(...); BOOST_STATIC_CONSTANT(bool, value = (::boost::type_traits::ice_and< sizeof(is_class_tester
(0)) == sizeof(::boost::type_traits::yes_type), ::boost::type_traits::ice_not< ::boost::is_union
::value >::value >::value) ); }; #endif #else template
struct is_class_impl { # ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION BOOST_STATIC_CONSTANT(bool, value = (::boost::type_traits::ice_and< ::boost::type_traits::ice_not< ::boost::is_union
::value >::value, ::boost::type_traits::ice_not< ::boost::is_scalar
::value >::value, ::boost::type_traits::ice_not< ::boost::is_array
::value >::value, ::boost::type_traits::ice_not< ::boost::is_reference
::value>::value, ::boost::type_traits::ice_not< ::boost::is_void
::value >::value, ::boost::type_traits::ice_not< ::boost::is_function
::value >::value >::value)); # else BOOST_STATIC_CONSTANT(bool, value = (::boost::type_traits::ice_and< ::boost::type_traits::ice_not< ::boost::is_union
::value >::value, ::boost::type_traits::ice_not< ::boost::is_scalar
::value >::value, ::boost::type_traits::ice_not< ::boost::is_array
::value >::value, ::boost::type_traits::ice_not< ::boost::is_reference
::value>::value, ::boost::type_traits::ice_not< ::boost::is_void
::value >::value >::value)); # endif }; # endif // BOOST_TT_HAS_CONFORMING_IS_CLASS_IMPLEMENTATION } // namespace detail # ifdef __EDG_VERSION__ BOOST_TT_AUX_BOOL_TRAIT_DEF1( is_class,T, boost::detail::is_class_impl
::type>::value) # else BOOST_TT_AUX_BOOL_TRAIT_DEF1(is_class,T,::boost::detail::is_class_impl
::value) # endif } // namespace boost #include
#endif // BOOST_TT_IS_CLASS_HPP_INCLUDED
is_class.hpp
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