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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_NO_DEPRECATION_WARNING
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14 # if defined(_MSC_VER) || defined(__BORLANDC__) || defined(__DMC__)
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15 # pragma message ("Warning: Boost.Signals is no longer being maintained and is now deprecated. Please switch to Boost.Signals2. To disable this warning message, define BOOST_SIGNALS_NO_DEPRECATION_WARNING.")
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16 # elif defined(__GNUC__) || defined(__HP_aCC) || defined(__SUNPRO_CC) || defined(__IBMCPP__)
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17 # warning "Boost.Signals is no longer being maintained and is now deprecated. Please switch to Boost.Signals2. To disable this warning message, define BOOST_SIGNALS_NO_DEPRECATION_WARNING."
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18 # endif
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19 #endif
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20
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21 #ifndef BOOST_SIGNALS_MAX_ARGS
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22 # define BOOST_SIGNALS_MAX_ARGS 10
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23 #endif
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24
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25 #include <boost/config.hpp>
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26 #include <boost/type_traits/function_traits.hpp>
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27 #include <boost/signals/signal0.hpp>
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28 #include <boost/signals/signal1.hpp>
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29 #include <boost/signals/signal2.hpp>
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30 #include <boost/signals/signal3.hpp>
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31 #include <boost/signals/signal4.hpp>
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32 #include <boost/signals/signal5.hpp>
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33 #include <boost/signals/signal6.hpp>
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34 #include <boost/signals/signal7.hpp>
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35 #include <boost/signals/signal8.hpp>
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36 #include <boost/signals/signal9.hpp>
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37 #include <boost/signals/signal10.hpp>
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38 #include <boost/function.hpp>
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39
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40 #ifdef BOOST_HAS_ABI_HEADERS
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41 # include BOOST_ABI_PREFIX
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42 #endif
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43
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44 namespace boost {
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45 #ifndef BOOST_FUNCTION_NO_FUNCTION_TYPE_SYNTAX
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46 namespace BOOST_SIGNALS_NAMESPACE {
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47 namespace detail {
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48 template<int Arity,
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49 typename Signature,
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50 typename Combiner,
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51 typename Group,
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52 typename GroupCompare,
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53 typename SlotFunction>
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54 class real_get_signal_impl;
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55
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56 template<typename Signature,
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57 typename Combiner,
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58 typename Group,
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59 typename GroupCompare,
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60 typename SlotFunction>
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61 class real_get_signal_impl<0, Signature, Combiner, Group, GroupCompare,
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62 SlotFunction>
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63 {
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64 typedef function_traits<Signature> traits;
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65
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66 public:
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67 typedef signal0<typename traits::result_type,
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68 Combiner,
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69 Group,
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70 GroupCompare,
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71 SlotFunction> type;
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72 };
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73
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74 template<typename Signature,
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75 typename Combiner,
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76 typename Group,
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77 typename GroupCompare,
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78 typename SlotFunction>
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79 class real_get_signal_impl<1, Signature, Combiner, Group, GroupCompare,
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80 SlotFunction>
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81 {
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82 typedef function_traits<Signature> traits;
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83
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84 public:
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85 typedef signal1<typename traits::result_type,
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86 typename traits::arg1_type,
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87 Combiner,
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88 Group,
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89 GroupCompare,
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90 SlotFunction> type;
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91 };
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92
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93 template<typename Signature,
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94 typename Combiner,
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95 typename Group,
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96 typename GroupCompare,
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97 typename SlotFunction>
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98 class real_get_signal_impl<2, Signature, Combiner, Group, GroupCompare,
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99 SlotFunction>
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100 {
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101 typedef function_traits<Signature> traits;
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102
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103 public:
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104 typedef signal2<typename traits::result_type,
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105 typename traits::arg1_type,
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106 typename traits::arg2_type,
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107 Combiner,
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108 Group,
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109 GroupCompare,
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110 SlotFunction> type;
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111 };
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112
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113 template<typename Signature,
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114 typename Combiner,
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115 typename Group,
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116 typename GroupCompare,
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117 typename SlotFunction>
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118 class real_get_signal_impl<3, Signature, Combiner, Group, GroupCompare,
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119 SlotFunction>
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120 {
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121 typedef function_traits<Signature> traits;
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122
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123 public:
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124 typedef signal3<typename traits::result_type,
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125 typename traits::arg1_type,
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126 typename traits::arg2_type,
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127 typename traits::arg3_type,
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128 Combiner,
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129 Group,
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130 GroupCompare,
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131 SlotFunction> type;
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132 };
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133
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134 template<typename Signature,
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135 typename Combiner,
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136 typename Group,
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137 typename GroupCompare,
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138 typename SlotFunction>
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139 class real_get_signal_impl<4, Signature, Combiner, Group, GroupCompare,
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140 SlotFunction>
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141 {
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142 typedef function_traits<Signature> traits;
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143
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144 public:
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145 typedef signal4<typename traits::result_type,
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146 typename traits::arg1_type,
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147 typename traits::arg2_type,
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148 typename traits::arg3_type,
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149 typename traits::arg4_type,
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150 Combiner,
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151 Group,
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152 GroupCompare,
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153 SlotFunction> type;
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154 };
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155
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156 template<typename Signature,
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157 typename Combiner,
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158 typename Group,
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159 typename GroupCompare,
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160 typename SlotFunction>
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161 class real_get_signal_impl<5, Signature, Combiner, Group, GroupCompare,
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162 SlotFunction>
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163 {
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164 typedef function_traits<Signature> traits;
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165
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166 public:
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167 typedef signal5<typename traits::result_type,
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168 typename traits::arg1_type,
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169 typename traits::arg2_type,
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170 typename traits::arg3_type,
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171 typename traits::arg4_type,
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172 typename traits::arg5_type,
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173 Combiner,
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174 Group,
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175 GroupCompare,
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176 SlotFunction> type;
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177 };
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178
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179 template<typename Signature,
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180 typename Combiner,
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181 typename Group,
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182 typename GroupCompare,
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183 typename SlotFunction>
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184 class real_get_signal_impl<6, Signature, Combiner, Group, GroupCompare,
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185 SlotFunction>
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186 {
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187 typedef function_traits<Signature> traits;
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188
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189 public:
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190 typedef signal6<typename traits::result_type,
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191 typename traits::arg1_type,
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192 typename traits::arg2_type,
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193 typename traits::arg3_type,
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194 typename traits::arg4_type,
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195 typename traits::arg5_type,
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196 typename traits::arg6_type,
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197 Combiner,
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198 Group,
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199 GroupCompare,
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200 SlotFunction> type;
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201 };
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202
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203 template<typename Signature,
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204 typename Combiner,
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205 typename Group,
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206 typename GroupCompare,
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207 typename SlotFunction>
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208 class real_get_signal_impl<7, Signature, Combiner, Group, GroupCompare,
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209 SlotFunction>
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210 {
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211 typedef function_traits<Signature> traits;
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212
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213 public:
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214 typedef signal7<typename traits::result_type,
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215 typename traits::arg1_type,
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216 typename traits::arg2_type,
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217 typename traits::arg3_type,
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218 typename traits::arg4_type,
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219 typename traits::arg5_type,
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220 typename traits::arg6_type,
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221 typename traits::arg7_type,
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222 Combiner,
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223 Group,
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224 GroupCompare,
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225 SlotFunction> type;
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226 };
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227
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228 template<typename Signature,
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229 typename Combiner,
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230 typename Group,
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231 typename GroupCompare,
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232 typename SlotFunction>
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233 class real_get_signal_impl<8, Signature, Combiner, Group, GroupCompare,
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234 SlotFunction>
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235 {
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236 typedef function_traits<Signature> traits;
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237
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238 public:
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239 typedef signal8<typename traits::result_type,
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240 typename traits::arg1_type,
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241 typename traits::arg2_type,
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242 typename traits::arg3_type,
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243 typename traits::arg4_type,
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244 typename traits::arg5_type,
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245 typename traits::arg6_type,
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246 typename traits::arg7_type,
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247 typename traits::arg8_type,
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248 Combiner,
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249 Group,
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250 GroupCompare,
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251 SlotFunction> type;
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252 };
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253
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254 template<typename Signature,
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255 typename Combiner,
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256 typename Group,
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257 typename GroupCompare,
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258 typename SlotFunction>
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259 class real_get_signal_impl<9, Signature, Combiner, Group, GroupCompare,
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260 SlotFunction>
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261 {
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262 typedef function_traits<Signature> traits;
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263
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264 public:
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265 typedef signal9<typename traits::result_type,
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266 typename traits::arg1_type,
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267 typename traits::arg2_type,
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268 typename traits::arg3_type,
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269 typename traits::arg4_type,
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270 typename traits::arg5_type,
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271 typename traits::arg6_type,
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272 typename traits::arg7_type,
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273 typename traits::arg8_type,
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274 typename traits::arg9_type,
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275 Combiner,
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276 Group,
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277 GroupCompare,
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278 SlotFunction> type;
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279 };
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280
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281 template<typename Signature,
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282 typename Combiner,
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283 typename Group,
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284 typename GroupCompare,
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285 typename SlotFunction>
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286 class real_get_signal_impl<10, Signature, Combiner, Group, GroupCompare,
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287 SlotFunction>
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288 {
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289 typedef function_traits<Signature> traits;
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290
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291 public:
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292 typedef signal10<typename traits::result_type,
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293 typename traits::arg1_type,
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294 typename traits::arg2_type,
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295 typename traits::arg3_type,
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296 typename traits::arg4_type,
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297 typename traits::arg5_type,
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298 typename traits::arg6_type,
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299 typename traits::arg7_type,
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300 typename traits::arg8_type,
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301 typename traits::arg9_type,
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302 typename traits::arg10_type,
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303 Combiner,
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304 Group,
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305 GroupCompare,
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306 SlotFunction> type;
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307 };
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308
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309 template<typename Signature,
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310 typename Combiner,
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311 typename Group,
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312 typename GroupCompare,
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313 typename SlotFunction>
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314 struct get_signal_impl :
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315 public real_get_signal_impl<(function_traits<Signature>::arity),
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316 Signature,
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317 Combiner,
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318 Group,
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319 GroupCompare,
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320 SlotFunction>
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321 {
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322 };
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323
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324 } // end namespace detail
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325 } // end namespace BOOST_SIGNALS_NAMESPACE
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326
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327 // Very lightweight wrapper around the signalN classes that allows signals to
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328 // be created where the number of arguments does not need to be part of the
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329 // class name.
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330 template<
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331 typename Signature, // function type R (T1, T2, ..., TN)
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332 typename Combiner = last_value<typename function_traits<Signature>::result_type>,
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333 typename Group = int,
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334 typename GroupCompare = std::less<Group>,
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335 typename SlotFunction = function<Signature>
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336 >
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337 class signal :
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338 public BOOST_SIGNALS_NAMESPACE::detail::get_signal_impl<Signature,
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339 Combiner,
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340 Group,
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341 GroupCompare,
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342 SlotFunction>::type
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343 {
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344 typedef typename BOOST_SIGNALS_NAMESPACE::detail::get_signal_impl<
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345 Signature,
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346 Combiner,
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347 Group,
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348 GroupCompare,
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349 SlotFunction>::type base_type;
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350
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351 public:
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352 explicit signal(const Combiner& combiner = Combiner(),
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353 const GroupCompare& group_compare = GroupCompare()) :
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354 base_type(combiner, group_compare)
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355 {
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356 }
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357 };
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358 #endif // ndef BOOST_FUNCTION_NO_FUNCTION_TYPE_SYNTAX
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359
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360 } // end namespace boost
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361
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362 #ifdef BOOST_HAS_ABI_HEADERS
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363 # include BOOST_ABI_SUFFIX
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364 #endif
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365
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366 #endif // BOOST_SIGNAL_HPP
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