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118 lines
4.0 KiB
118 lines
4.0 KiB
#ifndef BOOST_SERIALIZATION_TRACKING_HPP |
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#define BOOST_SERIALIZATION_TRACKING_HPP |
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// MS compatible compilers support #pragma once |
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#if defined(_MSC_VER) && (_MSC_VER >= 1020) |
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# pragma once |
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#endif |
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/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8 |
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// tracking.hpp: |
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// (C) Copyright 2002 Robert Ramey - http://www.rrsd.com . |
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// Use, modification and distribution is subject to the Boost Software |
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// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at |
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// http://www.boost.org/LICENSE_1_0.txt) |
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// See http://www.boost.org for updates, documentation, and revision history. |
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#include <boost/config.hpp> |
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#include <boost/static_assert.hpp> |
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#include <boost/mpl/eval_if.hpp> |
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#include <boost/mpl/identity.hpp> |
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#include <boost/mpl/int.hpp> |
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#include <boost/mpl/equal_to.hpp> |
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#include <boost/mpl/greater.hpp> |
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#include <boost/mpl/integral_c_tag.hpp> |
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#include <boost/type_traits/is_base_and_derived.hpp> |
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#include <boost/type_traits/is_pointer.hpp> |
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#include <boost/serialization/level.hpp> |
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#include <boost/serialization/tracking_enum.hpp> |
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#include <boost/serialization/type_info_implementation.hpp> |
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namespace boost { |
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namespace serialization { |
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struct basic_traits; |
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// default tracking level |
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template<class T> |
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struct tracking_level_impl { |
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template<class U> |
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struct traits_class_tracking { |
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typedef BOOST_DEDUCED_TYPENAME U::tracking type; |
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}; |
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typedef mpl::integral_c_tag tag; |
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// note: at least one compiler complained w/o the full qualification |
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// on basic traits below |
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typedef |
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BOOST_DEDUCED_TYPENAME mpl::eval_if< |
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is_base_and_derived<boost::serialization::basic_traits, T>, |
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traits_class_tracking< T >, |
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//else |
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BOOST_DEDUCED_TYPENAME mpl::eval_if< |
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is_pointer< T >, |
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// pointers are not tracked by default |
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mpl::int_<track_never>, |
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//else |
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BOOST_DEDUCED_TYPENAME mpl::eval_if< |
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// for primitives |
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BOOST_DEDUCED_TYPENAME mpl::equal_to< |
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implementation_level< T >, |
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mpl::int_<primitive_type> |
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>, |
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// is never |
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mpl::int_<track_never>, |
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// otherwise its selective |
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mpl::int_<track_selectively> |
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> > >::type type; |
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BOOST_STATIC_CONSTANT(int, value = type::value); |
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}; |
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template<class T> |
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struct tracking_level : |
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public tracking_level_impl<const T> |
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{ |
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}; |
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template<class T, enum tracking_type L> |
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inline bool operator>=(tracking_level< T > t, enum tracking_type l) |
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{ |
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return t.value >= (int)l; |
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} |
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} // namespace serialization |
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} // namespace boost |
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// The STATIC_ASSERT is prevents one from setting tracking for a primitive type. |
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// This almost HAS to be an error. Doing this will effect serialization of all |
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// char's in your program which is almost certainly what you don't want to do. |
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// If you want to track all instances of a given primitive type, You'll have to |
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// wrap it in your own type so its not a primitive anymore. Then it will compile |
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// without problem. |
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#define BOOST_CLASS_TRACKING(T, E) \ |
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namespace boost { \ |
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namespace serialization { \ |
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template<> \ |
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struct tracking_level< T > \ |
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{ \ |
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typedef mpl::integral_c_tag tag; \ |
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typedef mpl::int_< E> type; \ |
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BOOST_STATIC_CONSTANT( \ |
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int, \ |
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value = tracking_level::type::value \ |
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); \ |
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/* tracking for a class */ \ |
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BOOST_STATIC_ASSERT(( \ |
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mpl::greater< \ |
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/* that is a prmitive */ \ |
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implementation_level< T >, \ |
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mpl::int_<primitive_type> \ |
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>::value \ |
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)); \ |
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}; \ |
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}} |
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#endif // BOOST_SERIALIZATION_TRACKING_HPP
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