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is_pointer.hpp - Hosted on DriveHQ Cloud IT Platform
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路径: \\game3dprogramming\materials\GameFactory\GameFactoryDemo\references\boost_1_35_0\boost\type_traits\is_pointer.hpp
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// (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
: // Mappings between Types and Values" // by Andrei Alexandrescu (see http://www.cuj.com/experts/1810/alexandr.html). #ifndef BOOST_TT_IS_POINTER_HPP_INCLUDED #define BOOST_TT_IS_POINTER_HPP_INCLUDED #include
#include
#include
#include
#if !BOOST_WORKAROUND(BOOST_MSVC,<=1300) #include
#endif #ifdef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION # include
# include
# include
# include
# include
#endif // should be the last #include #include
namespace boost { #ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION namespace detail { template< typename T > struct is_pointer_helper { BOOST_STATIC_CONSTANT(bool, value = false); }; # define TT_AUX_BOOL_TRAIT_HELPER_PARTIAL_SPEC(helper,sp,result) \ template< typename T > struct helper
\ { \ BOOST_STATIC_CONSTANT(bool, value = result); \ }; \ /**/ TT_AUX_BOOL_TRAIT_HELPER_PARTIAL_SPEC(is_pointer_helper,T*,true) # undef TT_AUX_BOOL_TRAIT_HELPER_PARTIAL_SPEC template< typename T > struct is_pointer_impl { #if BOOST_WORKAROUND(BOOST_MSVC,<=1300) BOOST_STATIC_CONSTANT(bool, value = (::boost::type_traits::ice_and< ::boost::detail::is_pointer_helper
::value , ::boost::type_traits::ice_not< ::boost::is_member_pointer
::value >::value >::value) ); #else BOOST_STATIC_CONSTANT(bool, value = (::boost::type_traits::ice_and< ::boost::detail::is_pointer_helper
::type>::value , ::boost::type_traits::ice_not< ::boost::is_member_pointer
::value >::value >::value) ); #endif }; } // namespace detail BOOST_TT_AUX_BOOL_TRAIT_DEF1(is_pointer,T,::boost::detail::is_pointer_impl
::value) #if defined(__BORLANDC__) && !defined(__COMO__) && (__BORLANDC__ < 0x600) BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC1_1(typename T,is_pointer,T&,false) BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC1_1(typename T,is_pointer,T& const,false) BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC1_1(typename T,is_pointer,T& volatile,false) BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC1_1(typename T,is_pointer,T& const volatile,false) #endif #else // no partial template specialization namespace detail { struct pointer_helper { pointer_helper(const volatile void*); }; yes_type BOOST_TT_DECL is_pointer_tester(pointer_helper); no_type BOOST_TT_DECL is_pointer_tester(...); template
struct is_pointer_select : ::boost::type_traits::false_result { }; template <> struct is_pointer_select
{ template
struct result_ { static T& make_t(); BOOST_STATIC_CONSTANT(bool, value = (::boost::type_traits::ice_or< (1 == sizeof(is_pointer_tester(make_t()))), (1 == sizeof(type_traits::is_function_ptr_tester(make_t()))) >::value)); }; }; template
struct is_pointer_impl : is_pointer_select< ::boost::type_traits::ice_or< ::boost::is_reference
::value , ::boost::is_array
::value >::value >::template result_
{ }; BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_pointer,void,false) #ifndef BOOST_NO_CV_VOID_SPECIALIZATIONS BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_pointer,void const,false) BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_pointer,void volatile,false) BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_pointer,void const volatile,false) #endif } // namespace detail BOOST_TT_AUX_BOOL_TRAIT_DEF1(is_pointer,T,::boost::detail::is_pointer_impl
::value) #endif // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION } // namespace boost #include
#endif // BOOST_TT_IS_POINTER_HPP_INCLUDED
is_pointer.hpp
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