1 | // Boost.Signals library |
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2 | |
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3 | // Copyright Douglas Gregor 2001-2006. Use, modification and |
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4 | // distribution is subject to the Boost Software License, Version |
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5 | // 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 | // For more information, see http://www.boost.org/libs/signals |
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9 | |
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10 | #ifndef BOOST_SIGNAL_HPP |
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11 | #define BOOST_SIGNAL_HPP |
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12 | |
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13 | #ifndef BOOST_SIGNALS_MAX_ARGS |
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14 | # define BOOST_SIGNALS_MAX_ARGS 10 |
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15 | #endif |
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16 | |
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17 | #include <boost/config.hpp> |
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18 | #include <boost/type_traits/function_traits.hpp> |
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19 | #include <boost/signals/signal0.hpp> |
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20 | #include <boost/signals/signal1.hpp> |
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21 | #include <boost/signals/signal2.hpp> |
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22 | #include <boost/signals/signal3.hpp> |
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23 | #include <boost/signals/signal4.hpp> |
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24 | #include <boost/signals/signal5.hpp> |
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25 | #include <boost/signals/signal6.hpp> |
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26 | #include <boost/signals/signal7.hpp> |
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27 | #include <boost/signals/signal8.hpp> |
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28 | #include <boost/signals/signal9.hpp> |
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29 | #include <boost/signals/signal10.hpp> |
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30 | #include <boost/function.hpp> |
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31 | |
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32 | #ifdef BOOST_HAS_ABI_HEADERS |
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33 | # include BOOST_ABI_PREFIX |
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34 | #endif |
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35 | |
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36 | namespace boost { |
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37 | #ifndef BOOST_FUNCTION_NO_FUNCTION_TYPE_SYNTAX |
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38 | namespace BOOST_SIGNALS_NAMESPACE { |
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39 | namespace detail { |
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40 | template<int Arity, |
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41 | typename Signature, |
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42 | typename Combiner, |
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43 | typename Group, |
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44 | typename GroupCompare, |
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45 | typename SlotFunction> |
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46 | class real_get_signal_impl; |
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47 | |
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48 | template<typename Signature, |
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49 | typename Combiner, |
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50 | typename Group, |
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51 | typename GroupCompare, |
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52 | typename SlotFunction> |
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53 | class real_get_signal_impl<0, Signature, Combiner, Group, GroupCompare, |
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54 | SlotFunction> |
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55 | { |
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56 | typedef function_traits<Signature> traits; |
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57 | |
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58 | public: |
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59 | typedef signal0<typename traits::result_type, |
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60 | Combiner, |
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61 | Group, |
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62 | GroupCompare, |
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63 | SlotFunction> type; |
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64 | }; |
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65 | |
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66 | template<typename Signature, |
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67 | typename Combiner, |
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68 | typename Group, |
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69 | typename GroupCompare, |
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70 | typename SlotFunction> |
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71 | class real_get_signal_impl<1, Signature, Combiner, Group, GroupCompare, |
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72 | SlotFunction> |
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73 | { |
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74 | typedef function_traits<Signature> traits; |
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75 | |
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76 | public: |
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77 | typedef signal1<typename traits::result_type, |
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78 | typename traits::arg1_type, |
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79 | Combiner, |
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80 | Group, |
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81 | GroupCompare, |
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82 | SlotFunction> type; |
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83 | }; |
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84 | |
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85 | template<typename Signature, |
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86 | typename Combiner, |
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87 | typename Group, |
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88 | typename GroupCompare, |
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89 | typename SlotFunction> |
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90 | class real_get_signal_impl<2, Signature, Combiner, Group, GroupCompare, |
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91 | SlotFunction> |
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92 | { |
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93 | typedef function_traits<Signature> traits; |
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94 | |
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95 | public: |
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96 | typedef signal2<typename traits::result_type, |
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97 | typename traits::arg1_type, |
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98 | typename traits::arg2_type, |
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99 | Combiner, |
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100 | Group, |
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101 | GroupCompare, |
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102 | SlotFunction> type; |
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103 | }; |
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104 | |
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105 | template<typename Signature, |
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106 | typename Combiner, |
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107 | typename Group, |
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108 | typename GroupCompare, |
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109 | typename SlotFunction> |
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110 | class real_get_signal_impl<3, Signature, Combiner, Group, GroupCompare, |
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111 | SlotFunction> |
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112 | { |
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113 | typedef function_traits<Signature> traits; |
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114 | |
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115 | public: |
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116 | typedef signal3<typename traits::result_type, |
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117 | typename traits::arg1_type, |
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118 | typename traits::arg2_type, |
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119 | typename traits::arg3_type, |
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120 | Combiner, |
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121 | Group, |
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122 | GroupCompare, |
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123 | SlotFunction> type; |
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124 | }; |
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125 | |
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126 | template<typename Signature, |
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127 | typename Combiner, |
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128 | typename Group, |
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129 | typename GroupCompare, |
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130 | typename SlotFunction> |
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131 | class real_get_signal_impl<4, Signature, Combiner, Group, GroupCompare, |
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132 | SlotFunction> |
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133 | { |
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134 | typedef function_traits<Signature> traits; |
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135 | |
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136 | public: |
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137 | typedef signal4<typename traits::result_type, |
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138 | typename traits::arg1_type, |
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139 | typename traits::arg2_type, |
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140 | typename traits::arg3_type, |
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141 | typename traits::arg4_type, |
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142 | Combiner, |
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143 | Group, |
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144 | GroupCompare, |
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145 | SlotFunction> type; |
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146 | }; |
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147 | |
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148 | template<typename Signature, |
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149 | typename Combiner, |
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150 | typename Group, |
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151 | typename GroupCompare, |
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152 | typename SlotFunction> |
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153 | class real_get_signal_impl<5, Signature, Combiner, Group, GroupCompare, |
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154 | SlotFunction> |
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155 | { |
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156 | typedef function_traits<Signature> traits; |
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157 | |
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158 | public: |
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159 | typedef signal5<typename traits::result_type, |
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160 | typename traits::arg1_type, |
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161 | typename traits::arg2_type, |
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162 | typename traits::arg3_type, |
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163 | typename traits::arg4_type, |
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164 | typename traits::arg5_type, |
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165 | Combiner, |
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166 | Group, |
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167 | GroupCompare, |
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168 | SlotFunction> type; |
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169 | }; |
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170 | |
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171 | template<typename Signature, |
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172 | typename Combiner, |
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173 | typename Group, |
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174 | typename GroupCompare, |
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175 | typename SlotFunction> |
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176 | class real_get_signal_impl<6, Signature, Combiner, Group, GroupCompare, |
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177 | SlotFunction> |
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178 | { |
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179 | typedef function_traits<Signature> traits; |
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180 | |
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181 | public: |
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182 | typedef signal6<typename traits::result_type, |
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183 | typename traits::arg1_type, |
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184 | typename traits::arg2_type, |
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185 | typename traits::arg3_type, |
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186 | typename traits::arg4_type, |
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187 | typename traits::arg5_type, |
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188 | typename traits::arg6_type, |
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189 | Combiner, |
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190 | Group, |
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191 | GroupCompare, |
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192 | SlotFunction> type; |
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193 | }; |
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194 | |
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195 | template<typename Signature, |
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196 | typename Combiner, |
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197 | typename Group, |
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198 | typename GroupCompare, |
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199 | typename SlotFunction> |
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200 | class real_get_signal_impl<7, Signature, Combiner, Group, GroupCompare, |
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201 | SlotFunction> |
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202 | { |
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203 | typedef function_traits<Signature> traits; |
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204 | |
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205 | public: |
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206 | typedef signal7<typename traits::result_type, |
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207 | typename traits::arg1_type, |
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208 | typename traits::arg2_type, |
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209 | typename traits::arg3_type, |
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210 | typename traits::arg4_type, |
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211 | typename traits::arg5_type, |
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212 | typename traits::arg6_type, |
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213 | typename traits::arg7_type, |
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214 | Combiner, |
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215 | Group, |
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216 | GroupCompare, |
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217 | SlotFunction> type; |
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218 | }; |
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219 | |
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220 | template<typename Signature, |
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221 | typename Combiner, |
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222 | typename Group, |
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223 | typename GroupCompare, |
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224 | typename SlotFunction> |
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225 | class real_get_signal_impl<8, Signature, Combiner, Group, GroupCompare, |
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226 | SlotFunction> |
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227 | { |
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228 | typedef function_traits<Signature> traits; |
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229 | |
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230 | public: |
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231 | typedef signal8<typename traits::result_type, |
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232 | typename traits::arg1_type, |
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233 | typename traits::arg2_type, |
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234 | typename traits::arg3_type, |
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235 | typename traits::arg4_type, |
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236 | typename traits::arg5_type, |
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237 | typename traits::arg6_type, |
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238 | typename traits::arg7_type, |
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239 | typename traits::arg8_type, |
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240 | Combiner, |
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241 | Group, |
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242 | GroupCompare, |
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243 | SlotFunction> type; |
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244 | }; |
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245 | |
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246 | template<typename Signature, |
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247 | typename Combiner, |
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248 | typename Group, |
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249 | typename GroupCompare, |
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250 | typename SlotFunction> |
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251 | class real_get_signal_impl<9, Signature, Combiner, Group, GroupCompare, |
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252 | SlotFunction> |
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253 | { |
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254 | typedef function_traits<Signature> traits; |
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255 | |
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256 | public: |
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257 | typedef signal9<typename traits::result_type, |
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258 | typename traits::arg1_type, |
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259 | typename traits::arg2_type, |
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260 | typename traits::arg3_type, |
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261 | typename traits::arg4_type, |
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262 | typename traits::arg5_type, |
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263 | typename traits::arg6_type, |
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264 | typename traits::arg7_type, |
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265 | typename traits::arg8_type, |
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266 | typename traits::arg9_type, |
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267 | Combiner, |
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268 | Group, |
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269 | GroupCompare, |
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270 | SlotFunction> type; |
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271 | }; |
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272 | |
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273 | template<typename Signature, |
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274 | typename Combiner, |
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275 | typename Group, |
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276 | typename GroupCompare, |
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277 | typename SlotFunction> |
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278 | class real_get_signal_impl<10, Signature, Combiner, Group, GroupCompare, |
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279 | SlotFunction> |
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280 | { |
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281 | typedef function_traits<Signature> traits; |
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282 | |
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283 | public: |
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284 | typedef signal10<typename traits::result_type, |
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285 | typename traits::arg1_type, |
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286 | typename traits::arg2_type, |
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287 | typename traits::arg3_type, |
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288 | typename traits::arg4_type, |
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289 | typename traits::arg5_type, |
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290 | typename traits::arg6_type, |
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291 | typename traits::arg7_type, |
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292 | typename traits::arg8_type, |
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293 | typename traits::arg9_type, |
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294 | typename traits::arg10_type, |
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295 | Combiner, |
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296 | Group, |
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297 | GroupCompare, |
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298 | SlotFunction> type; |
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299 | }; |
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300 | |
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301 | template<typename Signature, |
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302 | typename Combiner, |
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303 | typename Group, |
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304 | typename GroupCompare, |
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305 | typename SlotFunction> |
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306 | struct get_signal_impl : |
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307 | public real_get_signal_impl<(function_traits<Signature>::arity), |
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308 | Signature, |
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309 | Combiner, |
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310 | Group, |
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311 | GroupCompare, |
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312 | SlotFunction> |
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313 | { |
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314 | }; |
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315 | |
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316 | } // end namespace detail |
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317 | } // end namespace BOOST_SIGNALS_NAMESPACE |
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318 | |
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319 | // Very lightweight wrapper around the signalN classes that allows signals to |
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320 | // be created where the number of arguments does not need to be part of the |
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321 | // class name. |
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322 | template< |
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323 | typename Signature, // function type R (T1, T2, ..., TN) |
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324 | typename Combiner = last_value<typename function_traits<Signature>::result_type>, |
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325 | typename Group = int, |
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326 | typename GroupCompare = std::less<Group>, |
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327 | typename SlotFunction = function<Signature> |
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328 | > |
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329 | class signal : |
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330 | public BOOST_SIGNALS_NAMESPACE::detail::get_signal_impl<Signature, |
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331 | Combiner, |
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332 | Group, |
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333 | GroupCompare, |
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334 | SlotFunction>::type |
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335 | { |
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336 | typedef typename BOOST_SIGNALS_NAMESPACE::detail::get_signal_impl< |
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337 | Signature, |
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338 | Combiner, |
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339 | Group, |
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340 | GroupCompare, |
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341 | SlotFunction>::type base_type; |
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342 | |
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343 | public: |
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344 | explicit signal(const Combiner& combiner = Combiner(), |
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345 | const GroupCompare& group_compare = GroupCompare()) : |
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346 | base_type(combiner, group_compare) |
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347 | { |
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348 | } |
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349 | }; |
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350 | #endif // ndef BOOST_FUNCTION_NO_FUNCTION_TYPE_SYNTAX |
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351 | |
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352 | } // end namespace boost |
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353 | |
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354 | #ifdef BOOST_HAS_ABI_HEADERS |
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355 | # include BOOST_ABI_SUFFIX |
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356 | #endif |
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357 | |
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358 | #endif // BOOST_SIGNAL_HPP |
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