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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="preprocessor">#pragma once</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> </div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> </div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="preprocessor">#include <type_traits></span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="preprocessor">#include <functional></span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="preprocessor">#include <algorithm></span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="preprocessor">#include <utility></span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="preprocessor">#include <cstddef></span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="preprocessor">#include <vector></span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="preprocessor">#include <memory></span></div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="preprocessor">#include <list></span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="preprocessor">#include <uv.h></span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> </div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> </div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="keyword">namespace </span><a class="code" href="namespaceuvw.html">uvw</a> {</div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> </div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> </div><div class="line"><a name="l00023"></a><span class="lineno"><a class="line" href="structuvw_1_1ErrorEvent.html"> 23</a></span> <span class="keyword">struct </span><a class="code" href="structuvw_1_1ErrorEvent.html">ErrorEvent</a> {</div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span>  template<typename U, typename = std::enable_if_t<std::is_integral<U>::value>></div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  <span class="keyword">explicit</span> <a class="code" href="structuvw_1_1ErrorEvent.html">ErrorEvent</a>(U val) noexcept</div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  : ec{<span class="keyword">static_cast<</span><span class="keywordtype">int</span><span class="keyword">></span>(val)}</div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  {}</div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> </div><div class="line"><a name="l00041"></a><span class="lineno"><a class="line" href="structuvw_1_1ErrorEvent.html#a4b50d8375e94ca82ebe0e9942771e07c"> 41</a></span>  <span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="structuvw_1_1ErrorEvent.html#a4b50d8375e94ca82ebe0e9942771e07c">translate</a>(<span class="keywordtype">int</span> sys) noexcept {</div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <span class="keywordflow">return</span> uv_translate_sys_error(sys);</div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  }</div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span> </div><div class="line"><a name="l00052"></a><span class="lineno"><a class="line" href="structuvw_1_1ErrorEvent.html#a2b7511b1fccf31f9de6f5362bedbe066"> 52</a></span>  <span class="keyword">const</span> <span class="keywordtype">char</span> * <a class="code" href="structuvw_1_1ErrorEvent.html#a2b7511b1fccf31f9de6f5362bedbe066">what</a>() const noexcept { <span class="keywordflow">return</span> uv_strerror(ec); }</div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span> </div><div class="line"><a name="l00061"></a><span class="lineno"><a class="line" href="structuvw_1_1ErrorEvent.html#a261276889f9db8882e7412f32808b372"> 61</a></span>  <span class="keyword">const</span> <span class="keywordtype">char</span> * <a class="code" href="structuvw_1_1ErrorEvent.html#a261276889f9db8882e7412f32808b372">name</a>() const noexcept { <span class="keywordflow">return</span> uv_err_name(ec); }</div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span> </div><div class="line"><a name="l00067"></a><span class="lineno"><a class="line" href="structuvw_1_1ErrorEvent.html#a47e65776ce0488f87665c00d5bc1241d"> 67</a></span>  <span class="keywordtype">int</span> <a class="code" href="structuvw_1_1ErrorEvent.html#a47e65776ce0488f87665c00d5bc1241d">code</a>() const noexcept { <span class="keywordflow">return</span> ec; }</div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span> </div><div class="line"><a name="l00073"></a><span class="lineno"><a class="line" href="structuvw_1_1ErrorEvent.html#a4b4c6d9ad18f644af71746e3d01439d5"> 73</a></span>  <span class="keyword">explicit</span> <span class="keyword">operator</span> bool() const noexcept { <span class="keywordflow">return</span> ec < 0; }</div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span> </div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span> <span class="keyword">private</span>:</div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> ec;</div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span> };</div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span> </div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span> </div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span> <span class="keyword">template</span><<span class="keyword">typename</span> T></div><div class="line"><a name="l00087"></a><span class="lineno"><a class="line" href="classuvw_1_1Emitter.html"> 87</a></span> <span class="keyword">class </span><a class="code" href="classuvw_1_1Emitter.html">Emitter</a> {</div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <span class="keyword">struct </span>BaseHandler {</div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="keyword">virtual</span> ~BaseHandler() noexcept = <span class="keywordflow">default</span>;</div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="keyword">virtual</span> <span class="keywordtype">bool</span> empty() <span class="keyword">const</span> noexcept = 0;</div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span> clear() noexcept = 0;</div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  };</div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span> </div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <span class="keyword">template</span><<span class="keyword">typename</span> E></div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="keyword">struct </span>Handler final: BaseHandler {</div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <span class="keyword">using</span> Listener = std::function<void(E &, T &)>;</div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="keyword">using</span> Element = std::pair<bool, Listener>;</div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <span class="keyword">using</span> ListenerList = std::list<Element>;</div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="keyword">using</span> <a class="code" href="structuvw_1_1Emitter_1_1Connection.html">Connection</a> = <span class="keyword">typename</span> ListenerList::iterator;</div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span> </div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="keywordtype">bool</span> empty() <span class="keyword">const</span> noexcept <span class="keyword">override</span> {</div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <span class="keyword">auto</span> pred = [](<span class="keyword">auto</span> &&element){ <span class="keywordflow">return</span> element.first; };</div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span> </div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="keywordflow">return</span> std::all_of(onceL.cbegin(), onceL.cend(), pred) &&</div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  std::all_of(onL.cbegin(), onL.cend(), pred);</div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  }</div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span> </div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="keywordtype">void</span> clear() noexcept <span class="keyword">override</span> {</div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <span class="keywordflow">if</span>(publishing) {</div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <span class="keyword">auto</span> func = [](<span class="keyword">auto</span> &&element){ element.first = <span class="keyword">true</span>; };</div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  std::for_each(onceL.begin(), onceL.end(), func);</div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  std::for_each(onL.begin(), onL.end(), func);</div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  onceL.clear();</div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  onL.clear();</div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  }</div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  }</div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span> </div><div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  <a class="code" href="structuvw_1_1Emitter_1_1Connection.html">Connection</a> once(Listener f) {</div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <span class="keywordflow">return</span> onceL.emplace(onceL.cend(), <span class="keyword">false</span>, std::move(f));</div><div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  }</div><div class="line"><a name="l00122"></a><span class="lineno"> 122</span> </div><div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  <a class="code" href="structuvw_1_1Emitter_1_1Connection.html">Connection</a> on(Listener f) {</div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  <span class="keywordflow">return</span> onL.emplace(onL.cend(), <span class="keyword">false</span>, std::move(f));</div><div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  }</div><div class="line"><a name="l00126"></a><span class="lineno"> 126</span> </div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <span class="keywordtype">void</span> erase(<a class="code" href="structuvw_1_1Emitter_1_1Connection.html">Connection</a> conn) noexcept {</div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  conn->first = <span class="keyword">true</span>;</div><div class="line"><a name="l00129"></a><span class="lineno"> 129</span> </div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  <span class="keywordflow">if</span>(!publishing) {</div><div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  <span class="keyword">auto</span> pred = [](<span class="keyword">auto</span> &&element){ <span class="keywordflow">return</span> element.first; };</div><div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  onceL.remove_if(pred);</div><div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  onL.remove_if(pred);</div><div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  }</div><div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  }</div><div class="line"><a name="l00136"></a><span class="lineno"> 136</span> </div><div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  <span class="keywordtype">void</span> publish(E event, T &ref) {</div><div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  ListenerList currentL;</div><div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  onceL.swap(currentL);</div><div class="line"><a name="l00140"></a><span class="lineno"> 140</span> </div><div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  <span class="keyword">auto</span> func = [&event, &ref](<span class="keyword">auto</span> &&element) {</div><div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  <span class="keywordflow">return</span> element.first ? void() : element.second(event, ref);</div><div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  };</div><div class="line"><a name="l00144"></a><span class="lineno"> 144</span> </div><div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  publishing = <span class="keyword">true</span>;</div><div class="line"><a name="l00146"></a><span class="lineno"> 146</span> </div><div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  std::for_each(onL.rbegin(), onL.rend(), func);</div><div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  std::for_each(currentL.rbegin(), currentL.rend(), func);</div><div class="line"><a name="l00149"></a><span class="lineno"> 149</span> </div><div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  publishing = <span class="keyword">false</span>;</div><div class="line"><a name="l00151"></a><span class="lineno"> 151</span> </div><div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  onL.remove_if([](<span class="keyword">auto</span> &&element){ <span class="keywordflow">return</span> element.first; });</div><div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  }</div><div class="line"><a name="l00154"></a><span class="lineno"> 154</span> </div><div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  <span class="keyword">private</span>:</div><div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  <span class="keywordtype">bool</span> publishing{<span class="keyword">false</span>};</div><div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  ListenerList onceL{};</div><div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  ListenerList onL{};</div><div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  };</div><div class="line"><a name="l00160"></a><span class="lineno"> 160</span> </div><div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  <span class="keyword">static</span> std::size_t next_type() noexcept {</div><div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  <span class="keyword">static</span> std::size_t counter = 0;</div><div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  <span class="keywordflow">return</span> counter++;</div><div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  }</div><div class="line"><a name="l00165"></a><span class="lineno"> 165</span> </div><div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  <span class="keyword">template</span><<span class="keyword">typename</span>></div><div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  <span class="keyword">static</span> std::size_t event_type() noexcept {</div><div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  <span class="keyword">static</span> std::size_t value = next_type();</div><div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  <span class="keywordflow">return</span> value;</div><div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  }</div><div class="line"><a name="l00171"></a><span class="lineno"> 171</span> </div><div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  <span class="keyword">template</span><<span class="keyword">typename</span> E></div><div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  Handler<E> & handler() noexcept {</div><div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  std::size_t type = event_type<E>();</div><div class="line"><a name="l00175"></a><span class="lineno"> 175</span> </div><div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  <span class="keywordflow">if</span>(!(type < handlers.size())) {</div><div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  handlers.resize(type+1);</div><div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  }</div><div class="line"><a name="l00179"></a><span class="lineno"> 179</span> </div><div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  <span class="keywordflow">if</span>(!handlers[type]) {</div><div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  handlers[type] = std::make_unique<Handler<E>>();</div><div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  }</div><div class="line"><a name="l00183"></a><span class="lineno"> 183</span> </div><div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  <span class="keywordflow">return</span> <span class="keyword">static_cast<</span>Handler<E>&<span class="keyword">></span>(*handlers[type]);</div><div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  }</div><div class="line"><a name="l00186"></a><span class="lineno"> 186</span> </div><div class="line"><a name="l00187"></a><span class="lineno"> 187</span> <span class="keyword">protected</span>:</div><div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  <span class="keyword">template</span><<span class="keyword">typename</span> E></div><div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  <span class="keywordtype">void</span> publish(E event) {</div><div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  handler<E>().publish(std::move(event), *<span class="keyword">static_cast<</span>T*<span class="keyword">></span>(<span class="keyword">this</span>));</div><div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  }</div><div class="line"><a name="l00192"></a><span class="lineno"> 192</span> </div><div class="line"><a name="l00193"></a><span class="lineno"> 193</span> <span class="keyword">public</span>:</div><div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  <span class="keyword">template</span><<span class="keyword">typename</span> E></div><div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  <span class="keyword">using</span> Listener = <span class="keyword">typename</span> Handler<E>::Listener;</div><div class="line"><a name="l00196"></a><span class="lineno"> 196</span> </div><div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  <span class="keyword">template</span><<span class="keyword">typename</span> E></div><div class="line"><a name="l00205"></a><span class="lineno"><a class="line" href="structuvw_1_1Emitter_1_1Connection.html"> 205</a></span>  <span class="keyword">struct </span><a class="code" href="structuvw_1_1Emitter_1_1Connection.html">Connection</a>: <span class="keyword">private</span> Handler<E><a class="code" href="structuvw_1_1Emitter_1_1Connection.html">::Connection</a> {</div><div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  <span class="keyword">template</span><<span class="keyword">typename</span>> <span class="keyword">friend</span> <span class="keyword">class </span><a class="code" href="classuvw_1_1Emitter.html">Emitter</a>;</div><div class="line"><a name="l00207"></a><span class="lineno"> 207</span> </div><div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  <a class="code" href="structuvw_1_1Emitter_1_1Connection.html">Connection</a>() = <span class="keywordflow">default</span>;</div><div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  <a class="code" href="structuvw_1_1Emitter_1_1Connection.html">Connection</a>(<span class="keyword">const</span> <a class="code" href="structuvw_1_1Emitter_1_1Connection.html">Connection</a> &) = <span class="keywordflow">default</span>;</div><div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  <a class="code" href="structuvw_1_1Emitter_1_1Connection.html">Connection</a>(<a class="code" href="structuvw_1_1Emitter_1_1Connection.html">Connection</a> &&) = <span class="keywordflow">default</span>;</div><div class="line"><a name="l00211"></a><span class="lineno"> 211</span> </div><div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  <a class="code" href="structuvw_1_1Emitter_1_1Connection.html">Connection</a>(<span class="keyword">typename</span> Handler<E>::Connection conn)</div><div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  : Handler<E>::Connection{std::move(conn)}</div><div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  {}</div><div class="line"><a name="l00215"></a><span class="lineno"> 215</span> </div><div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  <a class="code" href="structuvw_1_1Emitter_1_1Connection.html">Connection</a> & operator=(<span class="keyword">const</span> <a class="code" href="structuvw_1_1Emitter_1_1Connection.html">Connection</a> &) = <span class="keywordflow">default</span>;</div><div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  <a class="code" href="structuvw_1_1Emitter_1_1Connection.html">Connection</a> & operator=(<a class="code" href="structuvw_1_1Emitter_1_1Connection.html">Connection</a> &&) = <span class="keywordflow">default</span>;</div><div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  };</div><div class="line"><a name="l00219"></a><span class="lineno"> 219</span> </div><div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  <span class="keyword">virtual</span> ~<a class="code" href="classuvw_1_1Emitter.html">Emitter</a>() noexcept {</div><div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  static_assert(std::is_base_of<<a class="code" href="classuvw_1_1Emitter.html">Emitter<T></a>, T>::value, <span class="stringliteral">"!"</span>);</div><div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  }</div><div class="line"><a name="l00223"></a><span class="lineno"> 223</span> </div><div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  <span class="keyword">template</span><<span class="keyword">typename</span> E></div><div class="line"><a name="l00240"></a><span class="lineno"><a class="line" href="classuvw_1_1Emitter.html#af6ba3eecb542efbef8d62ae905d8a8cd"> 240</a></span>  Connection<E> <a class="code" href="classuvw_1_1Emitter.html#af6ba3eecb542efbef8d62ae905d8a8cd">on</a>(Listener<E> f) {</div><div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  <span class="keywordflow">return</span> handler<E>().on(std::move(f));</div><div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  }</div><div class="line"><a name="l00243"></a><span class="lineno"> 243</span> </div><div class="line"><a name="l00259"></a><span class="lineno"> 259</span>  <span class="keyword">template</span><<span class="keyword">typename</span> E></div><div class="line"><a name="l00260"></a><span class="lineno"><a class="line" href="classuvw_1_1Emitter.html#a79e4ed59b5bb5cdc5ee4b0dd71a38472"> 260</a></span>  Connection<E> <a class="code" href="classuvw_1_1Emitter.html#a79e4ed59b5bb5cdc5ee4b0dd71a38472">once</a>(Listener<E> f) {</div><div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  <span class="keywordflow">return</span> handler<E>().once(std::move(f));</div><div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  }</div><div class="line"><a name="l00263"></a><span class="lineno"> 263</span> </div><div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  <span class="keyword">template</span><<span class="keyword">typename</span> E></div><div class="line"><a name="l00269"></a><span class="lineno"><a class="line" href="classuvw_1_1Emitter.html#a4c98ab223b4367073d96c51ee3d6a0d1"> 269</a></span>  <span class="keywordtype">void</span> <a class="code" href="classuvw_1_1Emitter.html#a4c98ab223b4367073d96c51ee3d6a0d1">erase</a>(Connection<E> conn) noexcept {</div><div class="line"><a name="l00270"></a><span class="lineno"> 270</span>  handler<E>().erase(std::move(conn));</div><div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  }</div><div class="line"><a name="l00272"></a><span class="lineno"> 272</span> </div><div class="line"><a name="l00276"></a><span class="lineno"> 276</span>  <span class="keyword">template</span><<span class="keyword">typename</span> E></div><div class="line"><a name="l00277"></a><span class="lineno"><a class="line" href="classuvw_1_1Emitter.html#a3d332776a2e35049549a723f35d88912"> 277</a></span>  <span class="keywordtype">void</span> <a class="code" href="classuvw_1_1Emitter.html#a3d332776a2e35049549a723f35d88912">clear</a>() noexcept {</div><div class="line"><a name="l00278"></a><span class="lineno"> 278</span>  handler<E>().clear();</div><div class="line"><a name="l00279"></a><span class="lineno"> 279</span>  }</div><div class="line"><a name="l00280"></a><span class="lineno"> 280</span> </div><div class="line"><a name="l00284"></a><span class="lineno"><a class="line" href="classuvw_1_1Emitter.html#a6ff321dde35550bb40ab90a787b715cf"> 284</a></span>  <span class="keywordtype">void</span> <a class="code" href="classuvw_1_1Emitter.html#a6ff321dde35550bb40ab90a787b715cf">clear</a>() noexcept {</div><div class="line"><a name="l00285"></a><span class="lineno"> 285</span>  std::for_each(handlers.begin(), handlers.end(),</div><div class="line"><a name="l00286"></a><span class="lineno"> 286</span>  [](<span class="keyword">auto</span> &&hdlr){ <span class="keywordflow">if</span>(hdlr) { hdlr->clear(); } });</div><div class="line"><a name="l00287"></a><span class="lineno"> 287</span>  }</div><div class="line"><a name="l00288"></a><span class="lineno"> 288</span> </div><div class="line"><a name="l00294"></a><span class="lineno"> 294</span>  <span class="keyword">template</span><<span class="keyword">typename</span> E></div><div class="line"><a name="l00295"></a><span class="lineno"><a class="line" href="classuvw_1_1Emitter.html#a2178cfdcc8b19baa6d7e1f950c7b65c4"> 295</a></span>  <span class="keywordtype">bool</span> <a class="code" href="classuvw_1_1Emitter.html#a2178cfdcc8b19baa6d7e1f950c7b65c4">empty</a>() const noexcept {</div><div class="line"><a name="l00296"></a><span class="lineno"> 296</span>  std::size_t type = event_type<E>();</div><div class="line"><a name="l00297"></a><span class="lineno"> 297</span> </div><div class="line"><a name="l00298"></a><span class="lineno"> 298</span>  <span class="keywordflow">return</span> (!(type < handlers.size()) ||</div><div class="line"><a name="l00299"></a><span class="lineno"> 299</span>  !handlers[type] ||</div><div class="line"><a name="l00300"></a><span class="lineno"> 300</span>  <span class="keyword">static_cast<</span>Handler<E>&<span class="keyword">></span>(*handlers[type]).empty());</div><div class="line"><a name="l00301"></a><span class="lineno"> 301</span>  }</div><div class="line"><a name="l00302"></a><span class="lineno"> 302</span> </div><div class="line"><a name="l00308"></a><span class="lineno"><a class="line" href="classuvw_1_1Emitter.html#af15516ea3df907e5e27512d05f64a1cd"> 308</a></span>  <span class="keywordtype">bool</span> <a class="code" href="classuvw_1_1Emitter.html#af15516ea3df907e5e27512d05f64a1cd">empty</a>() const noexcept {</div><div class="line"><a name="l00309"></a><span class="lineno"> 309</span>  <span class="keywordflow">return</span> std::all_of(handlers.cbegin(), handlers.cend(),</div><div class="line"><a name="l00310"></a><span class="lineno"> 310</span>  [](<span class="keyword">auto</span> &&hdlr){ <span class="keywordflow">return</span> !hdlr || hdlr->empty(); });</div><div class="line"><a name="l00311"></a><span class="lineno"> 311</span>  }</div><div class="line"><a name="l00312"></a><span class="lineno"> 312</span> </div><div class="line"><a name="l00313"></a><span class="lineno"> 313</span> <span class="keyword">private</span>:</div><div class="line"><a name="l00314"></a><span class="lineno"> 314</span>  std::vector<std::unique_ptr<BaseHandler>> handlers{};</div><div class="line"><a name="l00315"></a><span class="lineno"> 315</span> };</div><div class="line"><a name="l00316"></a><span class="lineno"> 316</span> </div><div class="line"><a name="l00317"></a><span class="lineno"> 317</span> </div><div class="line"><a name="l00318"></a><span class="lineno"> 318</span> }</div><div class="ttc" id="classuvw_1_1Emitter_html"><div class="ttname"><a href="classuvw_1_1Emitter.html">uvw::Emitter</a></div><div class="ttdoc">Event emitter base class. </div><div class="ttdef"><b>Definition:</b> <a href="emitter_8hpp_source.html#l00087">emitter.hpp:87</a></div></div>
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<div class="ttc" id="structuvw_1_1Emitter_1_1Connection_html"><div class="ttname"><a href="structuvw_1_1Emitter_1_1Connection.html">uvw::Emitter::Connection</a></div><div class="ttdoc">Connection type for a given event type. </div><div class="ttdef"><b>Definition:</b> <a href="emitter_8hpp_source.html#l00205">emitter.hpp:205</a></div></div>
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<div class="ttc" id="structuvw_1_1ErrorEvent_html_a4b50d8375e94ca82ebe0e9942771e07c"><div class="ttname"><a href="structuvw_1_1ErrorEvent.html#a4b50d8375e94ca82ebe0e9942771e07c">uvw::ErrorEvent::translate</a></div><div class="ttdeci">static int translate(int sys) noexcept</div><div class="ttdoc">Returns the libuv error code equivalent to the given platform dependent error code. </div><div class="ttdef"><b>Definition:</b> <a href="emitter_8hpp_source.html#l00041">emitter.hpp:41</a></div></div>
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<div class="ttc" id="classuvw_1_1Emitter_html_a2178cfdcc8b19baa6d7e1f950c7b65c4"><div class="ttname"><a href="classuvw_1_1Emitter.html#a2178cfdcc8b19baa6d7e1f950c7b65c4">uvw::Emitter::empty</a></div><div class="ttdeci">bool empty() const noexcept</div><div class="ttdoc">Checks if there are listeners registered for the specific event. </div><div class="ttdef"><b>Definition:</b> <a href="emitter_8hpp_source.html#l00295">emitter.hpp:295</a></div></div>
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<div class="ttc" id="classuvw_1_1Emitter_html_a79e4ed59b5bb5cdc5ee4b0dd71a38472"><div class="ttname"><a href="classuvw_1_1Emitter.html#a79e4ed59b5bb5cdc5ee4b0dd71a38472">uvw::Emitter::once</a></div><div class="ttdeci">Connection< E > once(Listener< E > f)</div><div class="ttdoc">Registers a short-lived listener with the event emitter. </div><div class="ttdef"><b>Definition:</b> <a href="emitter_8hpp_source.html#l00260">emitter.hpp:260</a></div></div>
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<div class="ttc" id="structuvw_1_1ErrorEvent_html_a2b7511b1fccf31f9de6f5362bedbe066"><div class="ttname"><a href="structuvw_1_1ErrorEvent.html#a2b7511b1fccf31f9de6f5362bedbe066">uvw::ErrorEvent::what</a></div><div class="ttdeci">const char * what() const noexcept</div><div class="ttdoc">Returns the error message for the given error code. </div><div class="ttdef"><b>Definition:</b> <a href="emitter_8hpp_source.html#l00052">emitter.hpp:52</a></div></div>
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<div class="ttc" id="classuvw_1_1Emitter_html_af15516ea3df907e5e27512d05f64a1cd"><div class="ttname"><a href="classuvw_1_1Emitter.html#af15516ea3df907e5e27512d05f64a1cd">uvw::Emitter::empty</a></div><div class="ttdeci">bool empty() const noexcept</div><div class="ttdoc">Checks if there are listeners registered with the event emitter. </div><div class="ttdef"><b>Definition:</b> <a href="emitter_8hpp_source.html#l00308">emitter.hpp:308</a></div></div>
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<div class="ttc" id="classuvw_1_1Emitter_html_a3d332776a2e35049549a723f35d88912"><div class="ttname"><a href="classuvw_1_1Emitter.html#a3d332776a2e35049549a723f35d88912">uvw::Emitter::clear</a></div><div class="ttdeci">void clear() noexcept</div><div class="ttdoc">Disconnects all the listeners for the given event type. </div><div class="ttdef"><b>Definition:</b> <a href="emitter_8hpp_source.html#l00277">emitter.hpp:277</a></div></div>
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<div class="ttc" id="classuvw_1_1Emitter_html_a4c98ab223b4367073d96c51ee3d6a0d1"><div class="ttname"><a href="classuvw_1_1Emitter.html#a4c98ab223b4367073d96c51ee3d6a0d1">uvw::Emitter::erase</a></div><div class="ttdeci">void erase(Connection< E > conn) noexcept</div><div class="ttdoc">Disconnects a listener from the event emitter. </div><div class="ttdef"><b>Definition:</b> <a href="emitter_8hpp_source.html#l00269">emitter.hpp:269</a></div></div>
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<div class="ttc" id="classuvw_1_1Emitter_html_a6ff321dde35550bb40ab90a787b715cf"><div class="ttname"><a href="classuvw_1_1Emitter.html#a6ff321dde35550bb40ab90a787b715cf">uvw::Emitter::clear</a></div><div class="ttdeci">void clear() noexcept</div><div class="ttdoc">Disconnects all the listeners. </div><div class="ttdef"><b>Definition:</b> <a href="emitter_8hpp_source.html#l00284">emitter.hpp:284</a></div></div>
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<div class="ttc" id="structuvw_1_1ErrorEvent_html_a261276889f9db8882e7412f32808b372"><div class="ttname"><a href="structuvw_1_1ErrorEvent.html#a261276889f9db8882e7412f32808b372">uvw::ErrorEvent::name</a></div><div class="ttdeci">const char * name() const noexcept</div><div class="ttdoc">Returns the error name for the given error code. </div><div class="ttdef"><b>Definition:</b> <a href="emitter_8hpp_source.html#l00061">emitter.hpp:61</a></div></div>
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<div class="ttc" id="structuvw_1_1ErrorEvent_html"><div class="ttname"><a href="structuvw_1_1ErrorEvent.html">uvw::ErrorEvent</a></div><div class="ttdoc">The ErrorEvent event. </div><div class="ttdef"><b>Definition:</b> <a href="emitter_8hpp_source.html#l00023">emitter.hpp:23</a></div></div>
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<div class="ttc" id="classuvw_1_1Emitter_html_af6ba3eecb542efbef8d62ae905d8a8cd"><div class="ttname"><a href="classuvw_1_1Emitter.html#af6ba3eecb542efbef8d62ae905d8a8cd">uvw::Emitter::on</a></div><div class="ttdeci">Connection< E > on(Listener< E > f)</div><div class="ttdoc">Registers a long-lived listener with the event emitter. </div><div class="ttdef"><b>Definition:</b> <a href="emitter_8hpp_source.html#l00240">emitter.hpp:240</a></div></div>
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<div class="ttc" id="structuvw_1_1ErrorEvent_html_a47e65776ce0488f87665c00d5bc1241d"><div class="ttname"><a href="structuvw_1_1ErrorEvent.html#a47e65776ce0488f87665c00d5bc1241d">uvw::ErrorEvent::code</a></div><div class="ttdeci">int code() const noexcept</div><div class="ttdoc">Gets the underlying error code, that is an error constant of libuv. </div><div class="ttdef"><b>Definition:</b> <a href="emitter_8hpp_source.html#l00067">emitter.hpp:67</a></div></div>
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<div class="ttc" id="namespaceuvw_html"><div class="ttname"><a href="namespaceuvw.html">uvw</a></div><div class="ttdoc">uvw default namespace. </div><div class="ttdef"><b>Definition:</b> <a href="async_8hpp_source.html#l00011">async.hpp:11</a></div></div>
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