1 | // boost::compressed_pair test program |
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2 | |
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3 | // (C) Copyright John Maddock 2000. |
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4 | // Use, modification and distribution are subject to the Boost Software License, |
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5 | // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at |
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6 | // http://www.boost.org/LICENSE_1_0.txt). |
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7 | |
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8 | |
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9 | // standalone test program for <boost/call_traits.hpp> |
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10 | // 18 Mar 2002: |
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11 | // Changed some names to prevent conflicts with some new type_traits additions. |
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12 | // 03 Oct 2000: |
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13 | // Enabled extra tests for VC6. |
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14 | |
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15 | #include <cassert> |
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16 | #include <iostream> |
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17 | #include <iomanip> |
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18 | #include <algorithm> |
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19 | #include <typeinfo> |
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20 | #include <boost/call_traits.hpp> |
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21 | |
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22 | #include <libs/type_traits/test/test.hpp> |
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23 | #include <libs/type_traits/test/check_type.hpp> |
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24 | |
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25 | // |
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26 | // define tests here |
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27 | unsigned failures = 0; |
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28 | unsigned test_count = 0; |
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29 | // |
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30 | // This must get defined within the test file. |
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31 | // All compilers have bugs, set this to the number of |
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32 | // regressions *expected* from a given compiler, |
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33 | // if there are no workarounds for the bugs, *and* |
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34 | // the regressions have been investigated. |
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35 | // |
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36 | extern unsigned int expected_failures; |
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37 | // |
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38 | // proc check_result() |
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39 | // Checks that there were no regressions: |
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40 | // |
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41 | int check_result(int argc, char** argv) |
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42 | { |
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43 | std::cout << test_count << " tests completed, " |
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44 | << failures << " failures found, " |
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45 | << expected_failures << " failures expected from this compiler." << std::endl; |
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46 | if((argc == 2) |
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47 | && (argv[1][0] == '-') |
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48 | && (argv[1][1] == 'a') |
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49 | && (argv[1][2] == 0)) |
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50 | { |
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51 | std::cout << "Press any key to continue..."; |
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52 | std::cin.get(); |
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53 | } |
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54 | return (failures == expected_failures) |
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55 | ? 0 |
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56 | : (failures != 0) ? static_cast<int>(failures) : -1; |
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57 | } |
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58 | |
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59 | // a way prevent warnings for unused variables |
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60 | template<class T> inline void unused_variable(const T&) {} |
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61 | |
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62 | // |
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63 | // struct contained models a type that contains a type (for example std::pair) |
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64 | // arrays are contained by value, and have to be treated as a special case: |
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65 | // |
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66 | template <class T> |
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67 | struct contained |
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68 | { |
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69 | // define our typedefs first, arrays are stored by value |
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70 | // so value_type is not the same as result_type: |
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71 | typedef typename boost::call_traits<T>::param_type param_type; |
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72 | typedef typename boost::call_traits<T>::reference reference; |
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73 | typedef typename boost::call_traits<T>::const_reference const_reference; |
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74 | typedef T value_type; |
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75 | typedef typename boost::call_traits<T>::value_type result_type; |
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76 | |
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77 | // stored value: |
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78 | value_type v_; |
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79 | |
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80 | // constructors: |
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81 | contained() {} |
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82 | contained(param_type p) : v_(p){} |
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83 | // return byval: |
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84 | result_type value()const { return v_; } |
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85 | // return by_ref: |
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86 | reference get() { return v_; } |
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87 | const_reference const_get()const { return v_; } |
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88 | // pass value: |
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89 | void call(param_type){} |
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90 | |
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91 | }; |
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92 | |
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93 | #ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION |
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94 | template <class T, std::size_t N> |
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95 | struct contained<T[N]> |
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96 | { |
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97 | typedef typename boost::call_traits<T[N]>::param_type param_type; |
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98 | typedef typename boost::call_traits<T[N]>::reference reference; |
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99 | typedef typename boost::call_traits<T[N]>::const_reference const_reference; |
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100 | typedef T value_type[N]; |
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101 | typedef typename boost::call_traits<T[N]>::value_type result_type; |
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102 | |
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103 | value_type v_; |
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104 | |
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105 | contained(param_type p) |
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106 | { |
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107 | std::copy(p, p+N, v_); |
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108 | } |
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109 | // return byval: |
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110 | result_type value()const { return v_; } |
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111 | // return by_ref: |
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112 | reference get() { return v_; } |
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113 | const_reference const_get()const { return v_; } |
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114 | void call(param_type){} |
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115 | }; |
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116 | #endif |
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117 | |
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118 | template <class T> |
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119 | contained<typename boost::call_traits<T>::value_type> test_wrap_type(const T& t) |
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120 | { |
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121 | typedef typename boost::call_traits<T>::value_type ct; |
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122 | return contained<ct>(t); |
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123 | } |
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124 | |
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125 | namespace test{ |
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126 | |
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127 | template <class T1, class T2> |
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128 | std::pair< |
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129 | typename boost::call_traits<T1>::value_type, |
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130 | typename boost::call_traits<T2>::value_type> |
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131 | make_pair(const T1& t1, const T2& t2) |
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132 | { |
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133 | return std::pair< |
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134 | typename boost::call_traits<T1>::value_type, |
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135 | typename boost::call_traits<T2>::value_type>(t1, t2); |
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136 | } |
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137 | |
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138 | } // namespace test |
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139 | |
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140 | using namespace std; |
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141 | |
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142 | // |
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143 | // struct call_traits_checker: |
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144 | // verifies behaviour of contained example: |
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145 | // |
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146 | template <class T> |
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147 | struct call_traits_checker |
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148 | { |
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149 | typedef typename boost::call_traits<T>::param_type param_type; |
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150 | void operator()(param_type); |
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151 | }; |
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152 | |
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153 | template <class T> |
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154 | void call_traits_checker<T>::operator()(param_type p) |
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155 | { |
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156 | T t(p); |
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157 | contained<T> c(t); |
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158 | cout << "checking contained<" << typeid(T).name() << ">..." << endl; |
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159 | assert(t == c.value()); |
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160 | assert(t == c.get()); |
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161 | assert(t == c.const_get()); |
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162 | #ifndef __ICL |
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163 | //cout << "typeof contained<" << typeid(T).name() << ">::v_ is: " << typeid(&contained<T>::v_).name() << endl; |
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164 | cout << "typeof contained<" << typeid(T).name() << ">::value() is: " << typeid(&contained<T>::value).name() << endl; |
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165 | cout << "typeof contained<" << typeid(T).name() << ">::get() is: " << typeid(&contained<T>::get).name() << endl; |
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166 | cout << "typeof contained<" << typeid(T).name() << ">::const_get() is: " << typeid(&contained<T>::const_get).name() << endl; |
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167 | cout << "typeof contained<" << typeid(T).name() << ">::call() is: " << typeid(&contained<T>::call).name() << endl; |
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168 | cout << endl; |
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169 | #endif |
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170 | } |
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171 | |
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172 | #ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION |
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173 | template <class T, std::size_t N> |
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174 | struct call_traits_checker<T[N]> |
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175 | { |
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176 | typedef typename boost::call_traits<T[N]>::param_type param_type; |
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177 | void operator()(param_type t) |
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178 | { |
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179 | contained<T[N]> c(t); |
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180 | cout << "checking contained<" << typeid(T[N]).name() << ">..." << endl; |
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181 | unsigned int i = 0; |
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182 | for(i = 0; i < N; ++i) |
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183 | assert(t[i] == c.value()[i]); |
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184 | for(i = 0; i < N; ++i) |
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185 | assert(t[i] == c.get()[i]); |
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186 | for(i = 0; i < N; ++i) |
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187 | assert(t[i] == c.const_get()[i]); |
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188 | |
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189 | cout << "typeof contained<" << typeid(T[N]).name() << ">::v_ is: " << typeid(&contained<T[N]>::v_).name() << endl; |
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190 | cout << "typeof contained<" << typeid(T[N]).name() << ">::value is: " << typeid(&contained<T[N]>::value).name() << endl; |
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191 | cout << "typeof contained<" << typeid(T[N]).name() << ">::get is: " << typeid(&contained<T[N]>::get).name() << endl; |
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192 | cout << "typeof contained<" << typeid(T[N]).name() << ">::const_get is: " << typeid(&contained<T[N]>::const_get).name() << endl; |
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193 | cout << "typeof contained<" << typeid(T[N]).name() << ">::call is: " << typeid(&contained<T[N]>::call).name() << endl; |
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194 | cout << endl; |
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195 | } |
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196 | }; |
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197 | #endif |
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198 | |
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199 | // |
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200 | // check_wrap: |
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201 | template <class W, class U> |
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202 | void check_wrap(const W& w, const U& u) |
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203 | { |
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204 | cout << "checking " << typeid(W).name() << "..." << endl; |
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205 | assert(w.value() == u); |
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206 | } |
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207 | |
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208 | // |
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209 | // check_make_pair: |
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210 | // verifies behaviour of "make_pair": |
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211 | // |
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212 | template <class T, class U, class V> |
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213 | void check_make_pair(T c, U u, V v) |
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214 | { |
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215 | cout << "checking std::pair<" << typeid(c.first).name() << ", " << typeid(c.second).name() << ">..." << endl; |
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216 | assert(c.first == u); |
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217 | assert(c.second == v); |
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218 | cout << endl; |
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219 | } |
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220 | |
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221 | |
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222 | struct comparible_UDT |
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223 | { |
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224 | int i_; |
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225 | comparible_UDT() : i_(2){} |
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226 | comparible_UDT(const comparible_UDT& other) : i_(other.i_){} |
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227 | comparible_UDT& operator=(const comparible_UDT& other) |
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228 | { |
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229 | i_ = other.i_; |
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230 | return *this; |
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231 | } |
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232 | bool operator == (const comparible_UDT& v){ return v.i_ == i_; } |
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233 | }; |
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234 | |
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235 | int main(int argc, char *argv[ ]) |
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236 | { |
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237 | call_traits_checker<comparible_UDT> c1; |
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238 | comparible_UDT u; |
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239 | c1(u); |
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240 | call_traits_checker<int> c2; |
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241 | int i = 2; |
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242 | c2(i); |
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243 | int* pi = &i; |
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244 | int a[2] = {1,2}; |
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245 | #if defined(BOOST_MSVC6_MEMBER_TEMPLATES) && !defined(__ICL) |
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246 | call_traits_checker<int*> c3; |
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247 | c3(pi); |
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248 | call_traits_checker<int&> c4; |
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249 | c4(i); |
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250 | call_traits_checker<const int&> c5; |
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251 | c5(i); |
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252 | #if !defined (BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) && !defined(__MWERKS__) && !defined(__SUNPRO_CC) |
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253 | call_traits_checker<int[2]> c6; |
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254 | c6(a); |
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255 | #endif |
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256 | #endif |
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257 | |
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258 | check_wrap(test_wrap_type(2), 2); |
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259 | #if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) && !defined(__SUNPRO_CC) |
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260 | check_wrap(test_wrap_type(a), a); |
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261 | check_make_pair(test::make_pair(a, a), a, a); |
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262 | #endif |
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263 | |
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264 | // cv-qualifiers applied to reference types should have no effect |
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265 | // declare these here for later use with is_reference and remove_reference: |
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266 | typedef int& r_type; |
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267 | typedef const r_type cr_type; |
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268 | |
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269 | BOOST_CHECK_TYPE(comparible_UDT, boost::call_traits<comparible_UDT>::value_type); |
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270 | BOOST_CHECK_TYPE(comparible_UDT&, boost::call_traits<comparible_UDT>::reference); |
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271 | BOOST_CHECK_TYPE(const comparible_UDT&, boost::call_traits<comparible_UDT>::const_reference); |
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272 | BOOST_CHECK_TYPE(const comparible_UDT&, boost::call_traits<comparible_UDT>::param_type); |
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273 | BOOST_CHECK_TYPE(int, boost::call_traits<int>::value_type); |
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274 | BOOST_CHECK_TYPE(int&, boost::call_traits<int>::reference); |
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275 | BOOST_CHECK_TYPE(const int&, boost::call_traits<int>::const_reference); |
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276 | BOOST_CHECK_TYPE(const int, boost::call_traits<int>::param_type); |
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277 | BOOST_CHECK_TYPE(int*, boost::call_traits<int*>::value_type); |
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278 | BOOST_CHECK_TYPE(int*&, boost::call_traits<int*>::reference); |
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279 | BOOST_CHECK_TYPE(int*const&, boost::call_traits<int*>::const_reference); |
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280 | BOOST_CHECK_TYPE(int*const, boost::call_traits<int*>::param_type); |
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281 | #if defined(BOOST_MSVC6_MEMBER_TEMPLATES) |
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282 | BOOST_CHECK_TYPE(int&, boost::call_traits<int&>::value_type); |
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283 | BOOST_CHECK_TYPE(int&, boost::call_traits<int&>::reference); |
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284 | BOOST_CHECK_TYPE(const int&, boost::call_traits<int&>::const_reference); |
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285 | BOOST_CHECK_TYPE(int&, boost::call_traits<int&>::param_type); |
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286 | #if !(defined(__GNUC__) && ((__GNUC__ < 3) || (__GNUC__ == 3) && (__GNUC_MINOR__ < 1))) |
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287 | BOOST_CHECK_TYPE(int&, boost::call_traits<cr_type>::value_type); |
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288 | BOOST_CHECK_TYPE(int&, boost::call_traits<cr_type>::reference); |
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289 | BOOST_CHECK_TYPE(const int&, boost::call_traits<cr_type>::const_reference); |
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290 | BOOST_CHECK_TYPE(int&, boost::call_traits<cr_type>::param_type); |
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291 | #else |
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292 | std::cout << "Your compiler cannot instantiate call_traits<int&const>, skipping four tests (4 errors)" << std::endl; |
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293 | failures += 4; |
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294 | test_count += 4; |
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295 | #endif |
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296 | BOOST_CHECK_TYPE(const int&, boost::call_traits<const int&>::value_type); |
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297 | BOOST_CHECK_TYPE(const int&, boost::call_traits<const int&>::reference); |
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298 | BOOST_CHECK_TYPE(const int&, boost::call_traits<const int&>::const_reference); |
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299 | BOOST_CHECK_TYPE(const int&, boost::call_traits<const int&>::param_type); |
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300 | #ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION |
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301 | BOOST_CHECK_TYPE(const int*, boost::call_traits<int[3]>::value_type); |
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302 | BOOST_CHECK_TYPE(int(&)[3], boost::call_traits<int[3]>::reference); |
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303 | BOOST_CHECK_TYPE(const int(&)[3], boost::call_traits<int[3]>::const_reference); |
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304 | BOOST_CHECK_TYPE(const int*const, boost::call_traits<int[3]>::param_type); |
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305 | BOOST_CHECK_TYPE(const int*, boost::call_traits<const int[3]>::value_type); |
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306 | BOOST_CHECK_TYPE(const int(&)[3], boost::call_traits<const int[3]>::reference); |
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307 | BOOST_CHECK_TYPE(const int(&)[3], boost::call_traits<const int[3]>::const_reference); |
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308 | BOOST_CHECK_TYPE(const int*const, boost::call_traits<const int[3]>::param_type); |
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309 | // test with abstract base class: |
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310 | BOOST_CHECK_TYPE(test_abc1, boost::call_traits<test_abc1>::value_type); |
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311 | BOOST_CHECK_TYPE(test_abc1&, boost::call_traits<test_abc1>::reference); |
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312 | BOOST_CHECK_TYPE(const test_abc1&, boost::call_traits<test_abc1>::const_reference); |
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313 | BOOST_CHECK_TYPE(const test_abc1&, boost::call_traits<test_abc1>::param_type); |
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314 | #else |
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315 | std::cout << "You're compiler does not support partial template specialiation, skipping 8 tests (8 errors)" << std::endl; |
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316 | failures += 12; |
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317 | test_count += 12; |
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318 | #endif |
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319 | #else |
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320 | std::cout << "You're compiler does not support partial template specialiation, skipping 20 tests (20 errors)" << std::endl; |
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321 | failures += 24; |
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322 | test_count += 24; |
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323 | #endif |
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324 | // test with an incomplete type: |
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325 | BOOST_CHECK_TYPE(incomplete_type, boost::call_traits<incomplete_type>::value_type); |
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326 | BOOST_CHECK_TYPE(incomplete_type&, boost::call_traits<incomplete_type>::reference); |
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327 | BOOST_CHECK_TYPE(const incomplete_type&, boost::call_traits<incomplete_type>::const_reference); |
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328 | BOOST_CHECK_TYPE(const incomplete_type&, boost::call_traits<incomplete_type>::param_type); |
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329 | |
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330 | return check_result(argc, argv); |
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331 | } |
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332 | |
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333 | // |
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334 | // define call_traits tests to check that the assertions in the docs do actually work |
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335 | // this is an instantiate only set of tests: |
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336 | // |
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337 | template <typename T, bool isarray = false> |
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338 | struct call_traits_test |
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339 | { |
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340 | typedef ::boost::call_traits<T> ct; |
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341 | typedef typename ct::param_type param_type; |
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342 | typedef typename ct::reference reference; |
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343 | typedef typename ct::const_reference const_reference; |
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344 | typedef typename ct::value_type value_type; |
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345 | static void assert_construct(param_type val); |
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346 | }; |
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347 | |
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348 | template <typename T, bool isarray> |
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349 | void call_traits_test<T, isarray>::assert_construct(typename call_traits_test<T, isarray>::param_type val) |
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350 | { |
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351 | // |
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352 | // this is to check that the call_traits assertions are valid: |
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353 | T t(val); |
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354 | value_type v(t); |
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355 | reference r(t); |
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356 | const_reference cr(t); |
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357 | param_type p(t); |
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358 | value_type v2(v); |
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359 | value_type v3(r); |
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360 | value_type v4(p); |
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361 | reference r2(v); |
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362 | reference r3(r); |
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363 | const_reference cr2(v); |
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364 | const_reference cr3(r); |
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365 | const_reference cr4(cr); |
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366 | const_reference cr5(p); |
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367 | param_type p2(v); |
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368 | param_type p3(r); |
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369 | param_type p4(p); |
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370 | |
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371 | unused_variable(v2); |
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372 | unused_variable(v3); |
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373 | unused_variable(v4); |
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374 | unused_variable(r2); |
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375 | unused_variable(r3); |
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376 | unused_variable(cr2); |
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377 | unused_variable(cr3); |
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378 | unused_variable(cr4); |
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379 | unused_variable(cr5); |
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380 | unused_variable(p2); |
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381 | unused_variable(p3); |
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382 | unused_variable(p4); |
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383 | } |
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384 | #ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION |
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385 | template <typename T> |
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386 | struct call_traits_test<T, true> |
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387 | { |
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388 | typedef ::boost::call_traits<T> ct; |
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389 | typedef typename ct::param_type param_type; |
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390 | typedef typename ct::reference reference; |
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391 | typedef typename ct::const_reference const_reference; |
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392 | typedef typename ct::value_type value_type; |
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393 | static void assert_construct(param_type val); |
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394 | }; |
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395 | |
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396 | template <typename T> |
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397 | void call_traits_test<T, true>::assert_construct(typename boost::call_traits<T>::param_type val) |
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398 | { |
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399 | // |
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400 | // this is to check that the call_traits assertions are valid: |
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401 | T t; |
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402 | value_type v(t); |
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403 | value_type v5(val); |
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404 | reference r = t; |
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405 | const_reference cr = t; |
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406 | reference r2 = r; |
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407 | #ifndef __BORLANDC__ |
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408 | // C++ Builder buglet: |
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409 | const_reference cr2 = r; |
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410 | #endif |
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411 | param_type p(t); |
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412 | value_type v2(v); |
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413 | const_reference cr3 = cr; |
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414 | value_type v3(r); |
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415 | value_type v4(p); |
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416 | param_type p2(v); |
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417 | param_type p3(r); |
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418 | param_type p4(p); |
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419 | |
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420 | unused_variable(v2); |
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421 | unused_variable(v3); |
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422 | unused_variable(v4); |
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423 | unused_variable(v5); |
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424 | #ifndef __BORLANDC__ |
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425 | unused_variable(r2); |
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426 | unused_variable(cr2); |
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427 | #endif |
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428 | unused_variable(cr3); |
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429 | unused_variable(p2); |
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430 | unused_variable(p3); |
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431 | unused_variable(p4); |
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432 | } |
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433 | #endif //BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION |
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434 | // |
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435 | // now check call_traits assertions by instantiating call_traits_test: |
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436 | template struct call_traits_test<int>; |
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437 | template struct call_traits_test<const int>; |
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438 | template struct call_traits_test<int*>; |
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439 | #if defined(BOOST_MSVC6_MEMBER_TEMPLATES) |
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440 | template struct call_traits_test<int&>; |
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441 | template struct call_traits_test<const int&>; |
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442 | #if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) && !defined(__SUNPRO_CC) |
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443 | template struct call_traits_test<int[2], true>; |
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444 | #endif |
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445 | #endif |
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446 | |
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447 | #if defined(BOOST_MSVC) && _MSC_VER <= 1300 |
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448 | unsigned int expected_failures = 12; |
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449 | #elif defined(__SUNPRO_CC) |
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450 | #if(__SUNPRO_CC <= 0x520) |
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451 | unsigned int expected_failures = 18; |
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452 | #elif(__SUNPRO_CC < 0x530) |
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453 | unsigned int expected_failures = 17; |
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454 | #else |
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455 | unsigned int expected_failures = 6; |
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456 | #endif |
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457 | #elif defined(__BORLANDC__) |
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458 | unsigned int expected_failures = 2; |
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459 | #elif (defined(__GNUC__) && ((__GNUC__ < 3) || (__GNUC__ == 3) && (__GNUC_MINOR__ < 1))) |
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460 | unsigned int expected_failures = 4; |
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461 | #elif defined(__HP_aCC) |
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462 | unsigned int expected_failures = 24; |
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463 | #else |
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464 | unsigned int expected_failures = 0; |
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465 | #endif |
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466 | |
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