1 | // (C) Copyright Gennadiy Rozental 2001-2005.
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2 | // Distributed under the Boost Software License, Version 1.0.
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3 | // (See accompanying file LICENSE_1_0.txt or copy at
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4 | // http://www.boost.org/LICENSE_1_0.txt)
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5 |
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6 | // See http://www.boost.org/libs/test for the library home page.
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7 | //
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8 | // File : $RCSfile: class_properties.hpp,v $
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9 | //
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10 | // Version : $Revision: 1.7 $
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11 | //
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12 | // Description : simple facility that mimmic notion of read-only read-write
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13 | // properties in C++ classes. Original idea by Henrik Ravn.
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14 | // ***************************************************************************
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15 |
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16 | #ifndef BOOST_TEST_CLASS_PROPERTIES_HPP_071894GER
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17 | #define BOOST_TEST_CLASS_PROPERTIES_HPP_071894GER
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18 |
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19 | // Boost.Test
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20 | #include <boost/test/detail/config.hpp>
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21 |
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22 | // Boost
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23 | #if !BOOST_WORKAROUND(__IBMCPP__, BOOST_TESTED_AT(600))
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24 | #include <boost/preprocessor/seq/for_each.hpp>
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25 | #endif
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26 | #include <boost/call_traits.hpp>
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27 | #include <boost/type_traits/add_pointer.hpp>
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28 | #include <boost/type_traits/add_const.hpp>
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29 | #include <boost/utility/addressof.hpp>
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30 |
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31 | // STL
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32 | #include <iosfwd>
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33 |
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34 | #include <boost/test/detail/suppress_warnings.hpp>
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35 |
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36 | //____________________________________________________________________________//
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37 |
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38 | namespace boost {
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39 |
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40 | namespace unit_test {
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41 |
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42 | // ************************************************************************** //
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43 | // ************** class_property ************** //
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44 | // ************************************************************************** //
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45 |
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46 | template<class PropertyType>
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47 | class class_property {
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48 | protected:
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49 | typedef typename call_traits<PropertyType>::const_reference read_access_t;
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50 | typedef typename call_traits<PropertyType>::param_type write_param_t;
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51 | #if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x570))
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52 | typedef typename add_pointer<PropertyType const>::type address_res_t;
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53 | #else
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54 | typedef typename add_pointer<typename add_const<PropertyType>::type>::type address_res_t;
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55 | #endif
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56 | public:
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57 | // Constructor
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58 | class_property() : value( PropertyType() ) {}
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59 | explicit class_property( write_param_t init_value )
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60 | : value( init_value ) {}
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61 |
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62 | // Access methods
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63 | operator read_access_t() const { return value; }
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64 | read_access_t get() const { return value; }
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65 | bool operator!() const { return !value; }
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66 | address_res_t operator&() const { return &value; }
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67 |
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68 | // Data members
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69 | #ifndef BOOST_TEST_NO_PROTECTED_USING
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70 | protected:
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71 | #endif
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72 | PropertyType value;
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73 | };
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74 |
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75 | //____________________________________________________________________________//
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76 |
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77 | #ifdef BOOST_CLASSIC_IOSTREAMS
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78 |
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79 | template<class PropertyType>
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80 | inline std::ostream&
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81 | operator<<( std::ostream& os, class_property<PropertyType> const& p )
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82 |
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83 | #else
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84 |
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85 | template<typename CharT1, typename Tr,class PropertyType>
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86 | inline std::basic_ostream<CharT1,Tr>&
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87 | operator<<( std::basic_ostream<CharT1,Tr>& os, class_property<PropertyType> const& p )
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88 |
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89 | #endif
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90 | {
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91 | return os << p.get();
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92 | }
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93 |
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94 | //____________________________________________________________________________//
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95 |
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96 | #define DEFINE_PROPERTY_FREE_BINARY_OPERATOR( op ) \
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97 | template<class PropertyType> \
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98 | inline bool \
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99 | operator op( PropertyType const& lhs, class_property<PropertyType> const& rhs ) \
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100 | { \
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101 | return lhs op rhs.get(); \
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102 | } \
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103 | template<class PropertyType> \
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104 | inline bool \
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105 | operator op( class_property<PropertyType> const& lhs, PropertyType const& rhs ) \
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106 | { \
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107 | return lhs.get() op rhs; \
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108 | } \
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109 | template<class PropertyType> \
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110 | inline bool \
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111 | operator op( class_property<PropertyType> const& lhs, \
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112 | class_property<PropertyType> const& rhs ) \
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113 | { \
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114 | return lhs.get() op rhs.get(); \
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115 | } \
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116 | /**/
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117 |
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118 | DEFINE_PROPERTY_FREE_BINARY_OPERATOR( == )
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119 | DEFINE_PROPERTY_FREE_BINARY_OPERATOR( != )
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120 |
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121 | #undef DEFINE_PROPERTY_FREE_BINARY_OPERATOR
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122 |
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123 | #if BOOST_WORKAROUND(BOOST_MSVC, <= 1200)
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124 |
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125 | #define DEFINE_PROPERTY_LOGICAL_OPERATOR( op ) \
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126 | template<class PropertyType> \
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127 | inline bool \
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128 | operator op( bool b, class_property<PropertyType> const& p ) \
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129 | { \
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130 | return b op p.get(); \
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131 | } \
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132 | template<class PropertyType> \
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133 | inline bool \
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134 | operator op( class_property<PropertyType> const& p, bool b ) \
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135 | { \
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136 | return b op p.get(); \
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137 | } \
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138 | /**/
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139 |
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140 | DEFINE_PROPERTY_LOGICAL_OPERATOR( && )
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141 | DEFINE_PROPERTY_LOGICAL_OPERATOR( || )
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142 |
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143 | #endif
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144 |
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145 | // ************************************************************************** //
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146 | // ************** readonly_property ************** //
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147 | // ************************************************************************** //
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148 |
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149 | template<class PropertyType>
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150 | class readonly_property : public class_property<PropertyType> {
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151 | typedef class_property<PropertyType> base_prop;
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152 | typedef typename base_prop::address_res_t arrow_res_t;
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153 | protected:
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154 | typedef typename base_prop::write_param_t write_param_t;
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155 | public:
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156 | // Constructor
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157 | readonly_property() {}
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158 | explicit readonly_property( write_param_t init_value ) : base_prop( init_value ) {}
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159 |
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160 | // access methods
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161 | arrow_res_t operator->() const { return boost::addressof( base_prop::value ); }
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162 | };
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163 |
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164 | //____________________________________________________________________________//
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165 |
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166 | #if BOOST_WORKAROUND(__IBMCPP__, BOOST_TESTED_AT(600))
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167 |
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168 | #define BOOST_READONLY_PROPERTY( property_type, friends ) boost::unit_test::readwrite_property<property_type >
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169 |
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170 | #else
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171 |
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172 | #define BOOST_READONLY_PROPERTY_DECLARE_FRIEND(r, data, elem) friend class elem;
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173 |
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174 | #define BOOST_READONLY_PROPERTY( property_type, friends ) \
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175 | class BOOST_JOIN( readonly_property, __LINE__ ) \
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176 | : public boost::unit_test::readonly_property<property_type > { \
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177 | typedef boost::unit_test::readonly_property<property_type > base_prop; \
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178 | BOOST_PP_SEQ_FOR_EACH( BOOST_READONLY_PROPERTY_DECLARE_FRIEND, ' ', friends ) \
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179 | typedef base_prop::write_param_t write_param_t; \
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180 | public: \
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181 | BOOST_JOIN( readonly_property, __LINE__ )() {} \
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182 | explicit BOOST_JOIN( readonly_property, __LINE__ )( write_param_t init_v ) \
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183 | : base_prop( init_v ) {} \
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184 | } \
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185 | /**/
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186 |
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187 | #endif
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188 |
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189 | // ************************************************************************** //
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190 | // ************** readwrite_property ************** //
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191 | // ************************************************************************** //
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192 |
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193 | template<class PropertyType>
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194 | class readwrite_property : public class_property<PropertyType> {
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195 | typedef class_property<PropertyType> base_prop;
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196 | typedef typename add_pointer<PropertyType>::type arrow_res_t;
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197 | typedef typename base_prop::address_res_t const_arrow_res_t;
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198 | typedef typename base_prop::write_param_t write_param_t;
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199 | public:
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200 | readwrite_property() : base_prop() {}
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201 | explicit readwrite_property( write_param_t init_value ) : base_prop( init_value ) {}
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202 |
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203 | // access methods
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204 | void set( write_param_t v ) { base_prop::value = v; }
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205 | arrow_res_t operator->() { return boost::addressof( base_prop::value ); }
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206 | const_arrow_res_t operator->() const { return boost::addressof( base_prop::value ); }
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207 |
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208 | #ifndef BOOST_TEST_NO_PROTECTED_USING
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209 | using base_prop::value;
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210 | #endif
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211 | };
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212 |
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213 | //____________________________________________________________________________//
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214 |
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215 | } // unit_test
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216 |
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217 | } // namespace boost
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218 |
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219 | //____________________________________________________________________________//
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220 |
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221 | #include <boost/test/detail/enable_warnings.hpp>
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222 |
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223 | #undef BOOST_TEST_NO_PROTECTED_USING
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224 |
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225 | // ***************************************************************************
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226 | // Revision History :
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227 | //
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228 | // $Log: class_properties.hpp,v $
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229 | // Revision 1.7 2005/05/11 05:04:58 rogeeff
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230 | // borland portability fix
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231 | //
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232 | // Revision 1.6 2005/04/12 06:46:17 rogeeff
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233 | // use add_const
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234 | //
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235 | // Revision 1.5 2005/02/21 10:17:27 rogeeff
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236 | // base reference renamed (borland bug fix)
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237 | //
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238 | // Revision 1.4 2005/02/20 08:27:08 rogeeff
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239 | // This a major update for Boost.Test framework. See release docs for complete list of fixes/updates
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240 | //
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241 | // Revision 1.3 2005/02/01 06:40:07 rogeeff
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242 | // copyright update
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243 | // old log entries removed
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244 | // minor stilistic changes
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245 | // depricated tools removed
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246 | //
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247 | // Revision 1.2 2005/01/22 19:22:13 rogeeff
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248 | // implementation moved into headers section to eliminate dependency of included/minimal component on src directory
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249 | //
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250 | // Revision 1.1 2005/01/22 18:21:39 rogeeff
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251 | // moved sharable staff into utils
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252 | //
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253 | // ***************************************************************************
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254 |
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255 | #endif // BOOST_TEST_CLASS_PROPERTIES_HPP_071894GER
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