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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="preprocessor">#ifndef ENTT_SIGNAL_DISPATCHER_HPP</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160;<span class="preprocessor">#define ENTT_SIGNAL_DISPATCHER_HPP</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;</div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160;</div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160;<span class="preprocessor">#include &lt;vector&gt;</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160;<span class="preprocessor">#include &lt;memory&gt;</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160;<span class="preprocessor">#include &lt;utility&gt;</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;<span class="preprocessor">#include &lt;cstdint&gt;</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;<span class="preprocessor">#include &lt;algorithm&gt;</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;<span class="preprocessor">#include &lt;type_traits&gt;</span></div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<span class="preprocessor">#include &quot;../config/config.h&quot;</span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;<span class="preprocessor">#include &quot;../core/family.hpp&quot;</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;<span class="preprocessor">#include &quot;sigh.hpp&quot;</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;</div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;</div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespaceentt.html">entt</a> {</div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160;</div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160;</div><div class="line"><a name="l00035"></a><span class="lineno"><a class="line" href="classentt_1_1Dispatcher.html"> 35</a></span>&#160;<span class="keyword">class </span><a class="code" href="classentt_1_1Dispatcher.html">Dispatcher</a> final {</div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160; <span class="keyword">using</span> <a class="code" href="classentt_1_1Family.html">event_family</a> = <a class="code" href="classentt_1_1Family.html">Family&lt;struct InternalDispatcherEventFamily&gt;</a>;</div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span>&#160;</div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">typename</span> Class, <span class="keyword">typename</span> Event&gt;</div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160; <span class="keyword">using</span> instance_type = <span class="keyword">typename</span> <a class="code" href="classentt_1_1SigH.html">SigH&lt;void(const Event &amp;)&gt;::template</a> instance_type&lt;Class&gt;;</div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160;</div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160; <span class="keyword">struct </span>BaseSignalWrapper {</div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160; <span class="keyword">virtual</span> ~BaseSignalWrapper() = <span class="keywordflow">default</span>;</div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160; <span class="keyword">virtual</span> <span class="keywordtype">void</span> publish() = 0;</div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160; };</div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160;</div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">typename</span> Event&gt;</div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160; <span class="keyword">struct </span>SignalWrapper final: BaseSignalWrapper {</div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160; <span class="keyword">using</span> <a class="code" href="classentt_1_1Dispatcher.html#a3b34b8591cdd82022dba3c542054fe68">sink_type</a> = <span class="keyword">typename</span> <a class="code" href="classentt_1_1SigH.html">SigH&lt;void(const Event &amp;)&gt;::sink_type</a>;</div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160;</div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160; <span class="keywordtype">void</span> publish()<span class="keyword"> override </span>{</div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160; <span class="keyword">const</span> <span class="keyword">auto</span> &amp;curr = current++;</div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160; current %= std::extent&lt;decltype(events)&gt;::value;</div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160; std::for_each(events[curr].cbegin(), events[curr].cend(), [<span class="keyword">this</span>](<span class="keyword">const</span> <span class="keyword">auto</span> &amp;event) { signal.publish(event); });</div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160; events[curr].clear();</div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160; }</div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160;</div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160; <span class="keyword">inline</span> sink_type <a class="code" href="classentt_1_1Dispatcher.html#a091aa6ab261f34eee355c2b7180f709b">sink</a>() ENTT_NOEXCEPT {</div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160; <span class="keywordflow">return</span> signal.sink();</div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160; }</div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160;</div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">typename</span>... Args&gt;</div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160; <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="classentt_1_1Dispatcher.html#a89d44e6fa992fba9ba927f4b1492f66f">trigger</a>(Args &amp;&amp;... args) {</div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160; signal.publish({ std::forward&lt;Args&gt;(args)... });</div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160; }</div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160;</div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">typename</span>... Args&gt;</div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160; <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="classentt_1_1Dispatcher.html#a431743aa289ce022f7ee87cd7fb3eedf">enqueue</a>(Args &amp;&amp;... args) {</div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160; events[current].push_back({ std::forward&lt;Args&gt;(args)... });</div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160; }</div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160;</div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160; <span class="keyword">private</span>:</div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160; <a class="code" href="classentt_1_1SigH.html">SigH&lt;void(const Event &amp;)&gt;</a> signal{};</div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160; std::vector&lt;Event&gt; events[2];</div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160; <span class="keywordtype">int</span> current{};</div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160; };</div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160;</div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">typename</span> Event&gt;</div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160; SignalWrapper&lt;Event&gt; &amp; wrapper() {</div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160; <span class="keyword">const</span> <span class="keyword">auto</span> type = event_family::type&lt;Event&gt;();</div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160;</div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160; <span class="keywordflow">if</span>(!(type &lt; wrappers.size())) {</div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160; wrappers.resize(type + 1);</div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160; }</div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160;</div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160; <span class="keywordflow">if</span>(!wrappers[type]) {</div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160; wrappers[type] = std::make_unique&lt;SignalWrapper&lt;Event&gt;&gt;();</div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160; }</div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160;</div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160; <span class="keywordflow">return</span> <span class="keyword">static_cast&lt;</span>SignalWrapper&lt;Event&gt; &amp;<span class="keyword">&gt;</span>(*wrappers[type]);</div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span>&#160; }</div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160;</div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160;<span class="keyword">public</span>:</div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">typename</span> Event&gt;</div><div class="line"><a name="l00095"></a><span class="lineno"><a class="line" href="classentt_1_1Dispatcher.html#a3b34b8591cdd82022dba3c542054fe68"> 95</a></span>&#160; <span class="keyword">using</span> <a class="code" href="classentt_1_1Dispatcher.html#a3b34b8591cdd82022dba3c542054fe68">sink_type</a> = <span class="keyword">typename</span> SignalWrapper&lt;Event&gt;::sink_type;</div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160;</div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">typename</span> Event&gt;</div><div class="line"><a name="l00115"></a><span class="lineno"><a class="line" href="classentt_1_1Dispatcher.html#a091aa6ab261f34eee355c2b7180f709b"> 115</a></span>&#160; <span class="keyword">inline</span> <a class="code" href="classentt_1_1Dispatcher.html#a3b34b8591cdd82022dba3c542054fe68">sink_type&lt;Event&gt;</a> <a class="code" href="classentt_1_1Dispatcher.html#a091aa6ab261f34eee355c2b7180f709b">sink</a>() ENTT_NOEXCEPT {</div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span>&#160; <span class="keywordflow">return</span> wrapper&lt;Event&gt;().<a class="code" href="classentt_1_1Dispatcher.html#a091aa6ab261f34eee355c2b7180f709b">sink</a>();</div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span>&#160; }</div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span>&#160;</div><div class="line"><a name="l00129"></a><span class="lineno"> 129</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">typename</span> Event, <span class="keyword">typename</span>... Args&gt;</div><div class="line"><a name="l00130"></a><span class="lineno"><a class="line" href="classentt_1_1Dispatcher.html#a89d44e6fa992fba9ba927f4b1492f66f"> 130</a></span>&#160; <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="classentt_1_1Dispatcher.html#a89d44e6fa992fba9ba927f4b1492f66f">trigger</a>(Args &amp;&amp;... args) {</div><div class="line"><a name="l00131"></a><span class="lineno"> 131</span>&#160; wrapper&lt;Event&gt;().<a class="code" href="classentt_1_1Dispatcher.html#a89d44e6fa992fba9ba927f4b1492f66f">trigger</a>(std::forward&lt;Args&gt;(args)...);</div><div class="line"><a name="l00132"></a><span class="lineno"> 132</span>&#160; }</div><div class="line"><a name="l00133"></a><span class="lineno"> 133</span>&#160;</div><div class="line"><a name="l00144"></a><span class="lineno"> 144</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">typename</span> Event, <span class="keyword">typename</span>... Args&gt;</div><div class="line"><a name="l00145"></a><span class="lineno"><a class="line" href="classentt_1_1Dispatcher.html#a431743aa289ce022f7ee87cd7fb3eedf"> 145</a></span>&#160; <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="classentt_1_1Dispatcher.html#a431743aa289ce022f7ee87cd7fb3eedf">enqueue</a>(Args &amp;&amp;... args) {</div><div class="line"><a name="l00146"></a><span class="lineno"> 146</span>&#160; wrapper&lt;Event&gt;().<a class="code" href="classentt_1_1Dispatcher.html#a431743aa289ce022f7ee87cd7fb3eedf">enqueue</a>(std::forward&lt;Args&gt;(args)...);</div><div class="line"><a name="l00147"></a><span class="lineno"> 147</span>&#160; }</div><div class="line"><a name="l00148"></a><span class="lineno"> 148</span>&#160;</div><div class="line"><a name="l00158"></a><span class="lineno"> 158</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">typename</span> Event&gt;</div><div class="line"><a name="l00159"></a><span class="lineno"><a class="line" href="classentt_1_1Dispatcher.html#a2c3ffb218856dd962c7e50a5de14b918"> 159</a></span>&#160; <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="classentt_1_1Dispatcher.html#a2c3ffb218856dd962c7e50a5de14b918">update</a>() {</div><div class="line"><a name="l00160"></a><span class="lineno"> 160</span>&#160; wrapper&lt;Event&gt;().publish();</div><div class="line"><a name="l00161"></a><span class="lineno"> 161</span>&#160; }</div><div class="line"><a name="l00162"></a><span class="lineno"> 162</span>&#160;</div><div class="line"><a name="l00170"></a><span class="lineno"><a class="line" href="classentt_1_1Dispatcher.html#a88431e5c4e050d8c2e5ee880b920f5a5"> 170</a></span>&#160; <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="classentt_1_1Dispatcher.html#a88431e5c4e050d8c2e5ee880b920f5a5">update</a>()<span class="keyword"> const </span>{</div><div class="line"><a name="l00171"></a><span class="lineno"> 171</span>&#160; <span class="keywordflow">for</span>(<span class="keyword">auto</span> pos = wrappers.size(); pos; --pos) {</div><div class="line"><a name="l00172"></a><span class="lineno"> 172</span>&#160; <span class="keyword">auto</span> &amp;wrapper = wrappers[pos-1];</div><div class="line"><a name="l00173"></a><span class="lineno"> 173</span>&#160;</div><div class="line"><a name="l00174"></a><span class="lineno"> 174</span>&#160; <span class="keywordflow">if</span>(wrapper) {</div><div class="line"><a name="l00175"></a><span class="lineno"> 175</span>&#160; wrapper-&gt;publish();</div><div class="line"><a name="l00176"></a><span class="lineno"> 176</span>&#160; }</div><div class="line"><a name="l00177"></a><span class="lineno"> 177</span>&#160; }</div><div class="line"><a name="l00178"></a><span class="lineno"> 178</span>&#160; }</div><div class="line"><a name="l00179"></a><span class="lineno"> 179</span>&#160;</div><div class="line"><a name="l00180"></a><span class="lineno"> 180</span>&#160;<span class="keyword">private</span>:</div><div class="line"><a name="l00181"></a><span class="lineno"> 181</span>&#160; std::vector&lt;std::unique_ptr&lt;BaseSignalWrapper&gt;&gt; wrappers;</div><div class="line"><a name="l00182"></a><span class="lineno"> 182</span>&#160;};</div><div class="line"><a name="l00183"></a><span class="lineno"> 183</span>&#160;</div><div class="line"><a name="l00184"></a><span class="lineno"> 184</span>&#160;</div><div class="line"><a name="l00185"></a><span class="lineno"> 185</span>&#160;}</div><div class="line"><a name="l00186"></a><span class="lineno"> 186</span>&#160;</div><div class="line"><a name="l00187"></a><span class="lineno"> 187</span>&#160;</div><div class="line"><a name="l00188"></a><span class="lineno"> 188</span>&#160;<span class="preprocessor">#endif // ENTT_SIGNAL_DISPATCHER_HPP</span></div><div class="ttc" id="classentt_1_1Dispatcher_html_a3b34b8591cdd82022dba3c542054fe68"><div class="ttname"><a href="classentt_1_1Dispatcher.html#a3b34b8591cdd82022dba3c542054fe68">entt::Dispatcher::sink_type</a></div><div class="ttdeci">typename SignalWrapper&lt; Event &gt;::sink_type sink_type</div><div class="ttdoc">Type of sink for the given event. </div><div class="ttdef"><b>Definition:</b> <a href="dispatcher_8hpp_source.html#l00095">dispatcher.hpp:95</a></div></div>
<div class="ttc" id="classentt_1_1Dispatcher_html_a091aa6ab261f34eee355c2b7180f709b"><div class="ttname"><a href="classentt_1_1Dispatcher.html#a091aa6ab261f34eee355c2b7180f709b">entt::Dispatcher::sink</a></div><div class="ttdeci">sink_type&lt; Event &gt; sink() ENTT_NOEXCEPT</div><div class="ttdoc">Returns a sink object for the given event. </div><div class="ttdef"><b>Definition:</b> <a href="dispatcher_8hpp_source.html#l00115">dispatcher.hpp:115</a></div></div>
<div class="ttc" id="namespaceentt_html"><div class="ttname"><a href="namespaceentt.html">entt</a></div><div class="ttdoc">EnTT default namespace. </div><div class="ttdef"><b>Definition:</b> <a href="algorithm_8hpp_source.html#l00010">algorithm.hpp:10</a></div></div>
<div class="ttc" id="classentt_1_1Dispatcher_html_a431743aa289ce022f7ee87cd7fb3eedf"><div class="ttname"><a href="classentt_1_1Dispatcher.html#a431743aa289ce022f7ee87cd7fb3eedf">entt::Dispatcher::enqueue</a></div><div class="ttdeci">void enqueue(Args &amp;&amp;... args)</div><div class="ttdoc">Enqueues an event of the given type. </div><div class="ttdef"><b>Definition:</b> <a href="dispatcher_8hpp_source.html#l00145">dispatcher.hpp:145</a></div></div>
<div class="ttc" id="classentt_1_1Dispatcher_html_a88431e5c4e050d8c2e5ee880b920f5a5"><div class="ttname"><a href="classentt_1_1Dispatcher.html#a88431e5c4e050d8c2e5ee880b920f5a5">entt::Dispatcher::update</a></div><div class="ttdeci">void update() const</div><div class="ttdoc">Delivers all the pending events. </div><div class="ttdef"><b>Definition:</b> <a href="dispatcher_8hpp_source.html#l00170">dispatcher.hpp:170</a></div></div>
<div class="ttc" id="classentt_1_1Dispatcher_html_a89d44e6fa992fba9ba927f4b1492f66f"><div class="ttname"><a href="classentt_1_1Dispatcher.html#a89d44e6fa992fba9ba927f4b1492f66f">entt::Dispatcher::trigger</a></div><div class="ttdeci">void trigger(Args &amp;&amp;... args)</div><div class="ttdoc">Triggers an immediate event of the given type. </div><div class="ttdef"><b>Definition:</b> <a href="dispatcher_8hpp_source.html#l00130">dispatcher.hpp:130</a></div></div>
<div class="ttc" id="classentt_1_1Dispatcher_html"><div class="ttname"><a href="classentt_1_1Dispatcher.html">entt::Dispatcher</a></div><div class="ttdoc">Basic dispatcher implementation. </div><div class="ttdef"><b>Definition:</b> <a href="dispatcher_8hpp_source.html#l00035">dispatcher.hpp:35</a></div></div>
<div class="ttc" id="classentt_1_1Dispatcher_html_a2c3ffb218856dd962c7e50a5de14b918"><div class="ttname"><a href="classentt_1_1Dispatcher.html#a2c3ffb218856dd962c7e50a5de14b918">entt::Dispatcher::update</a></div><div class="ttdeci">void update()</div><div class="ttdoc">Delivers all the pending events of the given type. </div><div class="ttdef"><b>Definition:</b> <a href="dispatcher_8hpp_source.html#l00159">dispatcher.hpp:159</a></div></div>
<div class="ttc" id="classentt_1_1SigH_html"><div class="ttname"><a href="classentt_1_1SigH.html">entt::SigH</a></div><div class="ttdoc">Unmanaged signal handler declaration. </div><div class="ttdef"><b>Definition:</b> <a href="sigh_8hpp_source.html#l00112">sigh.hpp:112</a></div></div>
<div class="ttc" id="classentt_1_1Family_html"><div class="ttname"><a href="classentt_1_1Family.html">entt::Family</a></div><div class="ttdoc">Dynamic identifier generator. </div><div class="ttdef"><b>Definition:</b> <a href="family_8hpp_source.html#l00022">family.hpp:22</a></div></div>
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