1 | /////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8 |
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2 | // test_diamond.cpp |
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3 | |
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4 | // (C) Copyright 2002 Vladimir Prus. |
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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 | // test of serialization library for diamond intheritence situations |
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10 | |
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11 | #include <fstream> |
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12 | #include <iostream> |
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13 | |
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14 | #include <cstdio> // remove |
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15 | #include <boost/config.hpp> |
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16 | #if defined(BOOST_NO_STDC_NAMESPACE) |
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17 | namespace std{ |
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18 | using ::remove; |
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19 | } |
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20 | #endif |
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21 | |
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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/map.hpp> |
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27 | #include <boost/serialization/utility.hpp> |
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28 | #include <boost/serialization/split_member.hpp> |
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29 | #include <boost/serialization/tracking.hpp> |
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30 | #include <boost/serialization/base_object.hpp> |
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31 | #include <boost/serialization/nvp.hpp> |
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32 | #include <boost/serialization/export.hpp> |
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33 | |
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34 | using namespace boost; |
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35 | |
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36 | int save_count = 0; // used to detect when base class is saved multiple times |
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37 | int load_count = 0; // used to detect when base class is loaded multiple times |
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38 | |
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39 | class base { |
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40 | public: |
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41 | base() : i(0) {} |
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42 | base(int i) : i(i) |
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43 | { |
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44 | m[i] = "text"; |
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45 | } |
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46 | |
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47 | template<class Archive> |
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48 | void save(Archive &ar, const unsigned int /* file_version */) const |
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49 | { |
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50 | std::cout << "Saving base\n"; |
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51 | ar << BOOST_SERIALIZATION_NVP(i) << BOOST_SERIALIZATION_NVP(m); |
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52 | ++save_count; |
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53 | } |
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54 | |
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55 | template<class Archive> |
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56 | void load(Archive & ar, const unsigned int /* file_version */) |
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57 | { |
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58 | std::cout << "Restoring base\n"; |
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59 | ar >> BOOST_SERIALIZATION_NVP(i) >> BOOST_SERIALIZATION_NVP(m); |
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60 | ++load_count; |
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61 | } |
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62 | |
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63 | BOOST_SERIALIZATION_SPLIT_MEMBER() |
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64 | |
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65 | bool operator==(const base& another) const |
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66 | { |
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67 | return i == another.i && m == another.m; |
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68 | } |
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69 | // make virtual to evade gcc quirk |
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70 | virtual ~base() {}; |
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71 | private: |
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72 | int i; |
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73 | std::map<int, std::string> m; |
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74 | }; |
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75 | |
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76 | // note: the default is for object tracking to be performed if and only |
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77 | // if and object of the corresponding class is anywhere serialized |
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78 | // through a pointer. In this example, that doesn't occur so |
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79 | // by default, the shared base object wouldn't normally be tracked. |
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80 | // This would leave to multiple save/load operation of the data in |
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81 | // this shared base class. This wouldn't cause an error, but it would |
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82 | // be a waste of time. So set the tracking behavior trait of the base |
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83 | // class to always track serialized objects of that class. This permits |
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84 | // the system to detect and elminate redundent save/load operations. |
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85 | // (It is concievable that this might someday be detected automatically |
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86 | // but for now, this is not done so we have to rely on the programmer |
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87 | // to specify this trait) |
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88 | BOOST_CLASS_TRACKING(base, track_always) |
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89 | |
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90 | class derived1 : virtual public base { |
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91 | public: |
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92 | template<class Archive> |
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93 | void save(Archive &ar, const unsigned int /* file_version */) const |
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94 | { |
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95 | std::cout << "Saving derived1\n"; |
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96 | ar << BOOST_SERIALIZATION_BASE_OBJECT_NVP(base); |
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97 | } |
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98 | |
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99 | template<class Archive> |
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100 | void load(Archive & ar, const unsigned int /* file_version */) |
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101 | { |
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102 | std::cout << "Restoring derived1\n"; |
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103 | ar >> BOOST_SERIALIZATION_BASE_OBJECT_NVP(base); |
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104 | } |
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105 | |
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106 | BOOST_SERIALIZATION_SPLIT_MEMBER() |
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107 | }; |
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108 | |
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109 | class derived2 : virtual public base { |
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110 | public: |
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111 | template<class Archive> |
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112 | void save(Archive &ar, const unsigned int /* file_version */) const |
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113 | { |
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114 | std::cout << "Saving derived2\n"; |
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115 | ar << BOOST_SERIALIZATION_BASE_OBJECT_NVP(base); |
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116 | } |
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117 | |
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118 | template<class Archive> |
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119 | void load(Archive & ar, const unsigned int /* file_version */) |
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120 | { |
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121 | std::cout << "Restoring derived2\n"; |
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122 | ar >> BOOST_SERIALIZATION_BASE_OBJECT_NVP(base); |
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123 | } |
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124 | |
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125 | BOOST_SERIALIZATION_SPLIT_MEMBER() |
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126 | }; |
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127 | |
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128 | class final : public derived1, public derived2 { |
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129 | public: |
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130 | final() {} |
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131 | final(int i) : base(i) {} |
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132 | |
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133 | template<class Archive> |
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134 | void save(Archive &ar, const unsigned int /* file_version */) const |
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135 | { |
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136 | std::cout << "Saving final\n"; |
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137 | ar << BOOST_SERIALIZATION_BASE_OBJECT_NVP(derived1); |
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138 | ar << BOOST_SERIALIZATION_BASE_OBJECT_NVP(derived2); |
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139 | } |
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140 | |
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141 | template<class Archive> |
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142 | void load(Archive & ar, const unsigned int /* file_version */) |
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143 | { |
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144 | std::cout << "Restoring final\n"; |
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145 | ar >> BOOST_SERIALIZATION_BASE_OBJECT_NVP(derived1); |
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146 | ar >> BOOST_SERIALIZATION_BASE_OBJECT_NVP(derived2); |
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147 | } |
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148 | |
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149 | BOOST_SERIALIZATION_SPLIT_MEMBER() |
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150 | }; |
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151 | |
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152 | BOOST_CLASS_EXPORT(final) |
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153 | |
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154 | int |
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155 | test_main( int /* argc */, char* /* argv */[] ) |
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156 | { |
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157 | const char * testfile = boost::archive::tmpnam(NULL); |
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158 | BOOST_REQUIRE(NULL != testfile); |
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159 | |
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160 | const final b(3); |
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161 | { |
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162 | test_ostream ofs(testfile, TEST_STREAM_FLAGS); |
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163 | test_oarchive oa(ofs); |
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164 | oa << boost::serialization::make_nvp("b", b); |
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165 | } |
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166 | |
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167 | final b2; |
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168 | { |
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169 | test_istream ifs(testfile, TEST_STREAM_FLAGS); |
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170 | test_iarchive ia(ifs); |
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171 | ia >> boost::serialization::make_nvp("b2", b2); |
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172 | } |
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173 | BOOST_CHECK(1 == save_count); |
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174 | BOOST_CHECK(1 == load_count); |
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175 | BOOST_CHECK(b2 == b); |
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176 | std::remove(testfile); |
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177 | |
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178 | // do the same test with pointers |
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179 | testfile = boost::archive::tmpnam(NULL); |
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180 | BOOST_REQUIRE(NULL != testfile); |
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181 | |
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182 | save_count = 0; |
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183 | load_count = 0; |
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184 | |
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185 | const base* bp = new final( 3 ); |
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186 | { |
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187 | test_ostream ofs(testfile); |
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188 | test_oarchive oa(ofs); |
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189 | oa << BOOST_SERIALIZATION_NVP(bp); |
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190 | } |
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191 | |
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192 | base* bp2; |
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193 | { |
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194 | test_istream ifs(testfile); |
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195 | test_iarchive ia(ifs); |
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196 | ia >> BOOST_SERIALIZATION_NVP(bp2); |
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197 | } |
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198 | |
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199 | BOOST_CHECK(1 == save_count); |
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200 | BOOST_CHECK(1 == load_count); |
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201 | BOOST_CHECK(*bp2 == *bp); |
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202 | std::remove(testfile); |
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203 | |
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204 | return EXIT_SUCCESS; |
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205 | } |
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