1#ifndef BOOST_SERIALIZATION_LEVEL_HPP
2#define BOOST_SERIALIZATION_LEVEL_HPP
3
4// MS compatible compilers support #pragma once
5#if defined(_MSC_VER)
6# pragma once
7#endif
8
9/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
10// level.hpp:
11
12// (C) Copyright 2002 Robert Ramey - http://www.rrsd.com .
13// Use, modification and distribution is subject to the Boost Software
14// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
15// http://www.boost.org/LICENSE_1_0.txt)
16
17// See http://www.boost.org for updates, documentation, and revision history.
18
19#include <boost/config.hpp>
20#include <boost/detail/workaround.hpp>
21
22#include <boost/type_traits/is_fundamental.hpp>
23#include <boost/type_traits/is_enum.hpp>
24#include <boost/type_traits/is_array.hpp>
25#include <boost/type_traits/is_class.hpp>
26#include <boost/type_traits/is_base_and_derived.hpp>
27
28#include <boost/mpl/eval_if.hpp>
29#include <boost/mpl/int.hpp>
30#include <boost/mpl/integral_c.hpp>
31#include <boost/mpl/integral_c_tag.hpp>
32
33#include <boost/serialization/level_enum.hpp>
34
35namespace boost {
36namespace serialization {
37
38struct basic_traits;
39
40// default serialization implementation level
41template<class T>
42struct implementation_level_impl {
43 template<class U>
44 struct traits_class_level {
45 typedef typename U::level type;
46 };
47
48 typedef mpl::integral_c_tag tag;
49 // note: at least one compiler complained w/o the full qualification
50 // on basic traits below
51 typedef
52 typename mpl::eval_if<
53 is_base_and_derived<boost::serialization::basic_traits, T>,
54 traits_class_level< T >,
55 //else
56 typename mpl::eval_if<
57 is_fundamental< T >,
58 mpl::int_<primitive_type>,
59 //else
60 typename mpl::eval_if<
61 is_class< T >,
62 mpl::int_<object_class_info>,
63 //else
64 typename mpl::eval_if<
65 is_array< T >,
66 mpl::int_<object_serializable>,
67 //else
68 typename mpl::eval_if<
69 is_enum< T >,
70 mpl::int_<primitive_type>,
71 //else
72 mpl::int_<not_serializable>
73 >
74 >
75 >
76 >
77 >::type type;
78 // vc 7.1 doesn't like enums here
79 BOOST_STATIC_CONSTANT(int, value = type::value);
80};
81
82template<class T>
83struct implementation_level :
84 public implementation_level_impl<const T>
85{
86};
87
88template<class T, int L>
89inline bool operator>=(implementation_level< T > t, enum level_type l)
90{
91 return t.value >= (int)l;
92}
93
94} // namespace serialization
95} // namespace boost
96
97// specify the level of serialization implementation for the class
98// require that class info saved when versioning is used
99#define BOOST_CLASS_IMPLEMENTATION(T, E) \
100 namespace boost { \
101 namespace serialization { \
102 template <> \
103 struct implementation_level_impl< const T > \
104 { \
105 typedef mpl::integral_c_tag tag; \
106 typedef mpl::int_< E > type; \
107 BOOST_STATIC_CONSTANT( \
108 int, \
109 value = implementation_level_impl::type::value \
110 ); \
111 }; \
112 } \
113 }
114 /**/
115
116#endif // BOOST_SERIALIZATION_LEVEL_HPP
117