1 | #ifndef BOOST_SERIALIZATION_TYPE_INFO_IMPLEMENTATION_HPP
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2 | #define BOOST_SERIALIZATION_TYPE_INFO_IMPLEMENTATION_HPP
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3 |
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4 | // MS compatible compilers support #pragma once
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5 | #if defined(_MSC_VER) && (_MSC_VER >= 1020)
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6 | # pragma once
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7 | #endif
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8 |
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9 | /////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
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10 | // type_info_implementation.hpp: interface for portable version of type_info
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11 |
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12 | // (C) Copyright 2002 Robert Ramey - http://www.rrsd.com .
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13 | // Use, modification and distribution is subject to the Boost Software
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14 | // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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15 | // http://www.boost.org/LICENSE_1_0.txt)
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16 |
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17 | // See http://www.boost.org for updates, documentation, and revision history.
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18 |
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19 |
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20 | #include <boost/config.hpp>
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21 | #include <boost/detail/workaround.hpp>
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22 |
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23 | namespace boost {
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24 | namespace serialization {
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25 | template<class T>
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26 | class extended_type_info_null;
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27 | struct basic_traits;
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28 | } // namespace serialization
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29 | } // namespace boost
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30 |
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31 |
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32 | #ifdef BOOST_SERIALIZATION_DEFAULT_TYPE_INFO
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33 | #define BOOST_SERIALIZATION_EXTENDED_TYPE_INFO_STUB(T) \
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34 | BOOST_SERIALIZATION_DEFAULT_TYPE_INFO(T)
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35 | #else
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36 | #define BOOST_SERIALIZATION_EXTENDED_TYPE_INFO_STUB(T) \
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37 | extended_type_info_null< T >
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38 | #endif
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39 |
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40 | #include <boost/static_assert.hpp>
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41 | #include <boost/mpl/eval_if.hpp>
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42 | #include <boost/mpl/identity.hpp>
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43 | #include <boost/type_traits/is_base_and_derived.hpp>
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44 | #include <boost/serialization/traits.hpp>
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45 |
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46 | namespace boost {
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47 | namespace serialization {
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48 |
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49 | // note that T and const T are folded into const T so that
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50 | // there is only one table entry per type
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51 | template<class T>
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52 | struct type_info_implementation {
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53 | template<class U>
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54 | struct traits_class_typeinfo_implementation {
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55 | typedef BOOST_DEDUCED_TYPENAME U::type_info_implementation type;
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56 | };
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57 | typedef
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58 | BOOST_DEDUCED_TYPENAME mpl::eval_if<
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59 | boost::is_base_and_derived<basic_traits, T>,
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60 | traits_class_typeinfo_implementation<T>,
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61 | //else
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62 | mpl::identity<
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63 | BOOST_SERIALIZATION_EXTENDED_TYPE_INFO_STUB(T)
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64 | >
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65 | >::type type;
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66 | };
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67 |
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68 | } // namespace serialization
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69 | } // namespace boost
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70 |
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71 | // define a macro to assign a particular derivation of extended_type_info
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72 | // to a specified a class.
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73 | #if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x560))
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74 | #define BOOST_CLASS_TYPE_INFO(T, ETI) \
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75 | namespace boost { \
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76 | namespace serialization { \
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77 | template<> \
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78 | struct type_info_implementation< T > { \
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79 | typedef ETI type; \
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80 | }; \
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81 | } \
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82 | } \
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83 | /**/
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84 | #else
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85 | #define BOOST_CLASS_TYPE_INFO(T, ETI) \
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86 | namespace boost { \
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87 | namespace serialization { \
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88 | template<> \
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89 | struct type_info_implementation< T > { \
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90 | typedef ETI type; \
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91 | }; \
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92 | template<> \
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93 | struct type_info_implementation< const T > { \
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94 | typedef ETI type; \
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95 | }; \
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96 | } \
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97 | } \
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98 | /**/
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99 | #endif
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100 |
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101 | #endif /// BOOST_SERIALIZATION_TYPE_INFO_IMPLEMENTATION_HPP
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