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referent_storage.hpp - Hosted on DriveHQ Cloud IT Platform
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路径: \\game3dprogramming\materials\GameFactory\GameFactoryDemo\references\boost_1_35_0\boost\python\detail\referent_storage.hpp
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// Copyright David Abrahams 2002. // Distributed under 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) #ifndef REFERENT_STORAGE_DWA200278_HPP # define REFERENT_STORAGE_DWA200278_HPP # include
# include
namespace boost { namespace python { namespace detail { struct alignment_dummy; typedef void (*function_ptr)(); typedef int (alignment_dummy::*member_ptr); typedef int (alignment_dummy::*member_function_ptr)(); # define BOOST_PYTHON_ALIGNER(T, n) \ typename mpl::if_c< \ sizeof(T) <= size, T, char>::type t##n // Storage for size bytes, aligned to all fundamental types no larger than size template
union aligned_storage { BOOST_PYTHON_ALIGNER(char, 0); BOOST_PYTHON_ALIGNER(short, 1); BOOST_PYTHON_ALIGNER(int, 2); BOOST_PYTHON_ALIGNER(long, 3); BOOST_PYTHON_ALIGNER(float, 4); BOOST_PYTHON_ALIGNER(double, 5); BOOST_PYTHON_ALIGNER(long double, 6); BOOST_PYTHON_ALIGNER(void*, 7); BOOST_PYTHON_ALIGNER(function_ptr, 8); BOOST_PYTHON_ALIGNER(member_ptr, 9); BOOST_PYTHON_ALIGNER(member_function_ptr, 10); char bytes[size]; }; # undef BOOST_PYTHON_ALIGNER // Compute the size of T's referent. We wouldn't need this at all, // but sizeof() is broken in CodeWarriors <= 8.0 template
struct referent_size; # ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION template
struct referent_size
{ BOOST_STATIC_CONSTANT( std::size_t, value = sizeof(T)); }; # else template
struct referent_size { static T f(); BOOST_STATIC_CONSTANT(std::size_t, value = sizeof(f())); }; # endif // A metafunction returning a POD type which can store U, where T == // U&. If T is not a reference type, returns a POD which can store T. template
struct referent_storage { typedef aligned_storage< ::boost::python::detail::referent_size
::value > type; }; }}} // namespace boost::python::detail #endif // REFERENT_STORAGE_DWA200278_HPP
referent_storage.hpp
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