1 | /////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8 |
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2 | // test_derived.cpp |
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3 | |
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4 | // (C) Copyright 2002 Robert Ramey - http://www.rrsd.com . |
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5 | // Use, modification and distribution is subject to the Boost Software |
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6 | // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at |
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7 | // http://www.boost.org/LICENSE_1_0.txt) |
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8 | |
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9 | // should pass compilation and execution |
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10 | |
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11 | #include <fstream> |
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12 | |
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13 | #include <cstdio> // remove |
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14 | #include <boost/config.hpp> |
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15 | #if defined(BOOST_NO_STDC_NAMESPACE) |
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16 | namespace std{ |
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17 | using ::remove; |
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18 | } |
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19 | #endif |
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20 | |
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21 | #include <boost/archive/archive_exception.hpp> |
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22 | #include "test_tools.hpp" |
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23 | #include <boost/preprocessor/stringize.hpp> |
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24 | #include BOOST_PP_STRINGIZE(BOOST_ARCHIVE_TEST) |
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25 | |
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26 | #include <boost/serialization/base_object.hpp> |
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27 | |
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28 | class base |
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29 | { |
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30 | friend class boost::serialization::access; |
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31 | template<class Archive> |
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32 | void serialize(Archive & /* ar */, const unsigned int /* file_version */){ |
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33 | } |
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34 | }; |
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35 | |
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36 | class derived1 : public base |
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37 | { |
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38 | friend class boost::serialization::access; |
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39 | template<class Archive> |
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40 | void serialize(Archive &ar, const unsigned int /* file_version */){ |
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41 | ar & BOOST_SERIALIZATION_BASE_OBJECT_NVP(base); |
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42 | } |
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43 | }; |
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44 | |
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45 | class derived2 : public base |
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46 | { |
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47 | friend class boost::serialization::access; |
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48 | template<class Archive> |
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49 | void serialize(Archive &ar, const unsigned int /* file_version */){ |
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50 | ar & BOOST_SERIALIZATION_BASE_OBJECT_NVP(base); |
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51 | } |
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52 | }; |
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53 | |
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54 | // save non-polymorphic classes through a base class pointer |
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55 | void save_derived(const char *testfile) |
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56 | { |
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57 | test_ostream os(testfile, TEST_STREAM_FLAGS); |
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58 | test_oarchive oa(os); |
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59 | |
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60 | // registration not necessary when serializing the most derived pointer |
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61 | derived1 *d1 = new derived1; |
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62 | derived2 *d2 = new derived2; |
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63 | oa << BOOST_SERIALIZATION_NVP(d1) << BOOST_SERIALIZATION_NVP(d2); |
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64 | |
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65 | // upcasting non-polymorphic pointers may not lead to the expected |
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66 | // result. In the current type id system |
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67 | base *b1 = d1; |
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68 | base *b2 = d2; |
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69 | |
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70 | // Warning, the current type id system does not yield true |
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71 | // type id for non-polymorphic types |
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72 | const boost::serialization::extended_type_info & this_type |
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73 | = * boost::serialization::type_info_implementation<base>::type |
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74 | ::get_instance(); |
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75 | // retrieve the true type of the object pointed to |
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76 | const boost::serialization::extended_type_info & true_type |
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77 | = * boost::serialization::type_info_implementation<base>::type |
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78 | ::get_derived_extended_type_info(*b1); |
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79 | |
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80 | BOOST_WARN_MESSAGE( |
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81 | (this_type != true_type), |
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82 | "current type id system does not support non-polymorphic types" |
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83 | ); |
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84 | |
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85 | oa << BOOST_SERIALIZATION_NVP(b1); |
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86 | oa << BOOST_SERIALIZATION_NVP(b2); |
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87 | |
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88 | delete d1; |
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89 | delete d2; |
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90 | } |
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91 | |
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92 | // save non-polymorphic classes through a base class pointer |
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93 | void load_derived(const char *testfile) |
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94 | { |
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95 | test_istream is(testfile, TEST_STREAM_FLAGS); |
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96 | test_iarchive ia(is); |
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97 | |
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98 | // registration not necessary when serializing the most derived pointer |
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99 | derived1 *d1 = NULL; |
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100 | derived2 *d2 = NULL; |
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101 | ia >> BOOST_SERIALIZATION_NVP(d1) >> BOOST_SERIALIZATION_NVP(d2); |
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102 | |
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103 | // upcasting non-polymorphic pointers may not lead to the expected |
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104 | // result. In the current type id system |
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105 | base *b1 = NULL; |
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106 | base *b2 = NULL; |
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107 | |
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108 | // Warning, the current type id system does not yield true |
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109 | // type id for non-polymorphic types |
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110 | const boost::serialization::extended_type_info & this_type |
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111 | = * boost::serialization::type_info_implementation<base>::type |
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112 | ::get_instance(); |
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113 | // retrieve the true type of the object pointed to |
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114 | const boost::serialization::extended_type_info & true_type |
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115 | = * boost::serialization::type_info_implementation<base>::type |
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116 | ::get_derived_extended_type_info(*b1); |
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117 | |
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118 | BOOST_WARN_MESSAGE( |
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119 | this_type != true_type, |
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120 | "current type id system does fails for non-polymorphic types" |
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121 | ); |
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122 | |
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123 | // note: this will produce incorrect results for non-polymorphic classes |
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124 | ia >> BOOST_SERIALIZATION_NVP(b1); |
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125 | ia >> BOOST_SERIALIZATION_NVP(b2); |
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126 | |
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127 | delete d1; |
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128 | delete d2; |
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129 | } |
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130 | |
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131 | int |
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132 | test_main( int /* argc */, char* /* argv */[] ) |
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133 | { |
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134 | const char * testfile = boost::archive::tmpnam(NULL); |
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135 | BOOST_REQUIRE(NULL != testfile); |
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136 | |
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137 | save_derived(testfile); |
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138 | load_derived(testfile); |
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139 | std::remove(testfile); |
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140 | return EXIT_SUCCESS; |
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141 | } |
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142 | |
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143 | // EOF |
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