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1 #ifndef BOOST_SERIALIZATION_LEVEL_HPP |
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2 #define BOOST_SERIALIZATION_LEVEL_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 // level.hpp: |
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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 #include <boost/config.hpp> |
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20 #include <boost/detail/workaround.hpp> |
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21 |
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22 #include <boost/type_traits/is_fundamental.hpp> |
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23 #include <boost/type_traits/is_enum.hpp> |
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24 #include <boost/type_traits/is_array.hpp> |
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25 #include <boost/type_traits/is_class.hpp> |
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26 #include <boost/type_traits/is_base_and_derived.hpp> |
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27 |
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28 #include <boost/mpl/eval_if.hpp> |
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29 #include <boost/mpl/int.hpp> |
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30 #include <boost/mpl/integral_c.hpp> |
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31 #include <boost/mpl/integral_c_tag.hpp> |
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32 #include <boost/mpl/aux_/nttp_decl.hpp> |
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33 |
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34 #include <boost/serialization/level_enum.hpp> |
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35 |
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36 namespace boost { |
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37 namespace serialization { |
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38 |
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39 struct basic_traits; |
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40 |
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41 // default serialization implementation level |
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42 template<class T> |
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43 struct implementation_level { |
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44 template<class U> |
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45 struct traits_class_level { |
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46 typedef BOOST_DEDUCED_TYPENAME U::level type; |
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47 }; |
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48 |
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49 typedef mpl::integral_c_tag tag; |
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50 // note: at least one compiler complained w/o the full qualification |
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51 // on basic traits below |
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52 typedef |
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53 BOOST_DEDUCED_TYPENAME mpl::eval_if< |
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54 is_base_and_derived<boost::serialization::basic_traits, T>, |
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55 traits_class_level<T>, |
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56 //else |
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57 BOOST_DEDUCED_TYPENAME mpl::eval_if< |
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58 is_fundamental<T>, |
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59 mpl::int_<primitive_type>, |
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60 //else |
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61 BOOST_DEDUCED_TYPENAME mpl::eval_if< |
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62 is_class<T>, |
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63 mpl::int_<object_class_info>, |
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64 //else |
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65 BOOST_DEDUCED_TYPENAME mpl::eval_if< |
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66 is_array<T>, |
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67 #if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x560)) |
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68 mpl::int_<not_serializable>, |
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69 #else |
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70 mpl::int_<object_serializable>, |
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71 #endif |
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72 //else |
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73 BOOST_DEDUCED_TYPENAME mpl::eval_if< |
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74 is_enum<T>, |
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75 //#if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x560)) |
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76 // mpl::int_<not_serializable>, |
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77 //#else |
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78 mpl::int_<primitive_type>, |
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79 //#endif |
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80 //else |
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81 mpl::int_<not_serializable> |
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82 > |
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83 > |
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84 > |
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85 > |
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86 >::type type; |
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87 // vc 7.1 doesn't like enums here |
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88 BOOST_STATIC_CONSTANT(int, value = implementation_level::type::value); |
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89 }; |
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90 |
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91 |
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92 template<class T, BOOST_MPL_AUX_NTTP_DECL(int, L) > |
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93 inline bool operator>=(implementation_level<T> t, enum level_type l) |
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94 { |
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95 return t.value >= (int)l; |
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96 } |
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97 |
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98 } // namespace serialization |
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99 } // namespace boost |
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100 |
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101 // specify the level of serialization implementation for the class |
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102 // require that class info saved when versioning is used |
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103 #define BOOST_CLASS_IMPLEMENTATION(T, E) \ |
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104 namespace boost { \ |
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105 namespace serialization { \ |
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106 template <> \ |
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107 struct implementation_level< T > \ |
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108 { \ |
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109 typedef mpl::integral_c_tag tag; \ |
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110 typedef mpl::int_< E > type; \ |
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111 BOOST_STATIC_CONSTANT( \ |
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112 int, \ |
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113 value = implementation_level::type::value \ |
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114 ); \ |
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115 }; \ |
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116 } \ |
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117 } |
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118 /**/ |
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119 |
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120 #endif // BOOST_SERIALIZATION_LEVEL_HPP |