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<div class="title">observer.cpp</div> </div>
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<a href="observer_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/*------------------------------- phasicFlow ---------------------------------</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> O C enter of</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> O O E ngineering and</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> O O M ultiscale modeling of</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> OOOOOOO F luid flow </span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">------------------------------------------------------------------------------</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> Copyright (C): www.cemf.ir</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> email: hamid.r.norouzi AT gmail.com</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment">------------------------------------------------------------------------------ </span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment">Licence:</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> This file is part of phasicFlow code. It is a free software for simulating </span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> granular and multiphase flows. You can redistribute it and/or modify it under</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> the terms of GNU General Public License v3 or any other later versions. </span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> </span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> phasicFlow is distributed to help others in their research in the field of </span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> granular and multiphase flows, but WITHOUT ANY WARRANTY; without even the</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"></span> </div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment">-----------------------------------------------------------------------------*/</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>  </div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor">#include "<a class="code" href="observer_8hpp.html">observer.hpp</a>"</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor">#include "<a class="code" href="subscriber_8hpp.html">subscriber.hpp</a>"</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>  </div>
<div class="line"><a name="l00024"></a><span class="lineno"><a class="line" href="classpFlow_1_1observer.html#a7533b1993f98fb6956bcd554d830c831"> 24</a></span> <span class="keyword">const</span> <a class="code" href="classpFlow_1_1subscriber.html">pFlow::subscriber</a> *<a class="code" href="classpFlow_1_1observer.html#a7533b1993f98fb6956bcd554d830c831">pFlow::observer::changeSubscriber</a>(<span class="keyword">const</span> <a class="code" href="classpFlow_1_1subscriber.html">subscriber</a> *newSub)</div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> {</div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  <span class="keyword">const</span> <a class="code" href="classpFlow_1_1subscriber.html">subscriber</a>* old = <a class="code" href="classpFlow_1_1observer.html#ab403197d923198c2416d3f784281ee88">subscriber_</a>;</div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  <a class="code" href="classpFlow_1_1observer.html#ab403197d923198c2416d3f784281ee88">subscriber_</a> = newSub;</div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  <span class="keywordflow">return</span> old;</div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> }</div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  </div>
<div class="line"><a name="l00031"></a><span class="lineno"><a class="line" href="classpFlow_1_1observer.html#aa4805b6451fbb1651a6fd3eb8e0db673"> 31</a></span> <a class="code" href="classpFlow_1_1observer.html#aa4805b6451fbb1651a6fd3eb8e0db673">pFlow::observer::observer</a>(<a class="code" href="classpFlow_1_1message.html">message</a> msg) : subscriber_(nullptr),</div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  message_(msg)</div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> {}</div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  </div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <a class="code" href="classpFlow_1_1observer.html#aa4805b6451fbb1651a6fd3eb8e0db673">pFlow::observer::observer</a></div>
<div class="line"><a name="l00036"></a><span class="lineno"><a class="line" href="classpFlow_1_1observer.html#a19690aae8f79f259dab21ac5be29b0da"> 36</a></span> (</div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  <span class="keyword">const</span> <a class="code" href="classpFlow_1_1subscriber.html">subscriber</a>* subscrbr,</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  <a class="code" href="classpFlow_1_1message.html">message</a> msg</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> )</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> {</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  addToSubscriber(subscrbr, msg);</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> }</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  </div>
<div class="line"><a name="l00044"></a><span class="lineno"><a class="line" href="classpFlow_1_1observer.html#af035b2f590ebbed9ace6ffaf3954a893"> 44</a></span> <a class="code" href="classpFlow_1_1observer.html#af035b2f590ebbed9ace6ffaf3954a893">pFlow::observer::~observer</a>()</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> {</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="keywordflow">if</span>(subscriber_)</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  subscriber_->unsubscribe(<span class="keyword">this</span>);</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  invalidateSubscriber();</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> }</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  </div>
<div class="line"><a name="l00051"></a><span class="lineno"><a class="line" href="classpFlow_1_1observer.html#a653c7226b70e6965bf6a79b5e33925ff"> 51</a></span> <a class="code" href="classpFlow_1_1observer.html">pFlow::observer</a> &<a class="code" href="classpFlow_1_1observer.html#a653c7226b70e6965bf6a79b5e33925ff">pFlow::observer::addEvent</a>(<a class="code" href="classpFlow_1_1message.html#a9ebe5a85b9070712ab5db5fd0bed687d">message::EVENT</a> event)</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> {</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="keywordflow">if</span>( !message_.equivalentTo(event) )</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  {</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  message_.add(event);</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keywordflow">if</span>(!subscriber_->subscribe(<a class="code" href="classpFlow_1_1message.html">message</a>(event),<span class="keyword">this</span>))</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  {</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <a class="code" href="error_8hpp.html#aca9aa547c8441e4410a65a2ce7c21554">fatalErrorInFunction</a><<</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="stringliteral">"error when subcribing event from observer "</span><<<a class="code" href="namespacepFlow.html#aba8f0c455a3fdb4b05ad33a25b13b189">endl</a>;</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <a class="code" href="error_8hpp.html#aad22a1cd3b45a97ac8cd195f06fe61fe">fatalExit</a>;</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  }</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  }</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> }</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  </div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> <span class="keywordtype">void</span> <a class="code" href="classpFlow_1_1observer.html#ae60104d9527f96b61e9bc2ea1e19c9f2">pFlow::observer::addToSubscriber</a></div>
<div class="line"><a name="l00067"></a><span class="lineno"><a class="line" href="classpFlow_1_1observer.html#ae60104d9527f96b61e9bc2ea1e19c9f2"> 67</a></span> (</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="keyword">const</span> <a class="code" href="classpFlow_1_1subscriber.html">subscriber</a>* subscrbr, </div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <a class="code" href="classpFlow_1_1message.html">message</a> msg</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> )</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span> {</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="keywordflow">if</span>(subscriber_)</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  subscriber_->unsubscribe(<span class="keyword">this</span>);</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  invalidateSubscriber();</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  </div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  subscriber_ = subscrbr;</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  message_ = msg;</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>  <span class="keywordflow">if</span>(subscriber_)</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  {</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="keywordflow">if</span>(!subscriber_->subscribe(message_, <span class="keyword">this</span>))</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  {</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <a class="code" href="error_8hpp.html#aca9aa547c8441e4410a65a2ce7c21554">fatalErrorInFunction</a><<</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="stringliteral">"error in subscribing an observer"</span><<<a class="code" href="namespacepFlow.html#aba8f0c455a3fdb4b05ad33a25b13b189">endl</a>;</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <a class="code" href="error_8hpp.html#aad22a1cd3b45a97ac8cd195f06fe61fe">fatalExit</a>;</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  }</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  } </div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> }</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  </div>
<div class="line"><a name="l00090"></a><span class="lineno"><a class="line" href="classpFlow_1_1observer.html#aee31914b946ab2ffc70663260bab8b21"> 90</a></span> <span class="keywordtype">bool</span> <a class="code" href="classpFlow_1_1observer.html#ae60104d9527f96b61e9bc2ea1e19c9f2">pFlow::observer::addToSubscriber</a>(<span class="keyword">const</span> <a class="code" href="classpFlow_1_1subscriber.html">subscriber</a>& subscrbr)</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> {</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="keywordflow">if</span>(subscriber_)</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  subscriber_->unsubscribe(<span class="keyword">this</span>);</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  invalidateSubscriber();</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  </div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  subscriber_ = &subscrbr;</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="keywordflow">return</span> subscriber_-><a class="code" href="classpFlow_1_1subscriber.html#a2b573a33b5e6dde274238872f36e0729">subscribe</a>(message_, <span class="keyword">this</span>);</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> }</div>
</div><!-- fragment --></div><!-- contents -->
</div><!-- doc-content -->
<div class="ttc" id="aclasspFlow_1_1observer_html"><div class="ttname"><a href="classpFlow_1_1observer.html">pFlow::observer</a></div><div class="ttdef"><b>Definition:</b> <a href="observer_8hpp_source.html#l00033">observer.hpp:33</a></div></div>
<div class="ttc" id="asubscriber_8hpp_html"><div class="ttname"><a href="subscriber_8hpp.html">subscriber.hpp</a></div></div>
<div class="ttc" id="aclasspFlow_1_1message_html"><div class="ttname"><a href="classpFlow_1_1message.html">pFlow::message</a></div><div class="ttdef"><b>Definition:</b> <a href="message_8hpp_source.html#l00033">message.hpp:33</a></div></div>
<div class="ttc" id="aerror_8hpp_html_aad22a1cd3b45a97ac8cd195f06fe61fe"><div class="ttname"><a href="error_8hpp.html#aad22a1cd3b45a97ac8cd195f06fe61fe">fatalExit</a></div><div class="ttdeci">#define fatalExit</div><div class="ttdoc">Fatal exit.</div><div class="ttdef"><b>Definition:</b> <a href="error_8hpp_source.html#l00098">error.hpp:98</a></div></div>
<div class="ttc" id="aobserver_8hpp_html"><div class="ttname"><a href="observer_8hpp.html">observer.hpp</a></div></div>
<div class="ttc" id="aclasspFlow_1_1observer_html_aa4805b6451fbb1651a6fd3eb8e0db673"><div class="ttname"><a href="classpFlow_1_1observer.html#aa4805b6451fbb1651a6fd3eb8e0db673">pFlow::observer::observer</a></div><div class="ttdeci">observer(message msg)</div><div class="ttdef"><b>Definition:</b> <a href="observer_8cpp_source.html#l00031">observer.cpp:31</a></div></div>
<div class="ttc" id="aclasspFlow_1_1observer_html_a653c7226b70e6965bf6a79b5e33925ff"><div class="ttname"><a href="classpFlow_1_1observer.html#a653c7226b70e6965bf6a79b5e33925ff">pFlow::observer::addEvent</a></div><div class="ttdeci">observer & addEvent(message::EVENT event)</div><div class="ttdef"><b>Definition:</b> <a href="observer_8cpp_source.html#l00051">observer.cpp:51</a></div></div>
<div class="ttc" id="anamespacepFlow_html_aba8f0c455a3fdb4b05ad33a25b13b189"><div class="ttname"><a href="namespacepFlow.html#aba8f0c455a3fdb4b05ad33a25b13b189">pFlow::endl</a></div><div class="ttdeci">iOstream & endl(iOstream &os)</div><div class="ttdoc">Add newline and flush stream.</div><div class="ttdef"><b>Definition:</b> <a href="iOstream_8hpp_source.html#l00341">iOstream.hpp:341</a></div></div>
<div class="ttc" id="aclasspFlow_1_1subscriber_html"><div class="ttname"><a href="classpFlow_1_1subscriber.html">pFlow::subscriber</a></div><div class="ttdef"><b>Definition:</b> <a href="subscriber_8hpp_source.html#l00037">subscriber.hpp:37</a></div></div>
<div class="ttc" id="aclasspFlow_1_1message_html_a9ebe5a85b9070712ab5db5fd0bed687d"><div class="ttname"><a href="classpFlow_1_1message.html#a9ebe5a85b9070712ab5db5fd0bed687d">pFlow::message::EVENT</a></div><div class="ttdeci">EVENT</div><div class="ttdef"><b>Definition:</b> <a href="message_8hpp_source.html#l00036">message.hpp:36</a></div></div>
<div class="ttc" id="aclasspFlow_1_1subscriber_html_a2b573a33b5e6dde274238872f36e0729"><div class="ttname"><a href="classpFlow_1_1subscriber.html#a2b573a33b5e6dde274238872f36e0729">pFlow::subscriber::subscribe</a></div><div class="ttdeci">virtual bool subscribe(message msg, observer *obsevr) const</div><div class="ttdef"><b>Definition:</b> <a href="subscriber_8cpp_source.html#l00085">subscriber.cpp:85</a></div></div>
<div class="ttc" id="aerror_8hpp_html_aca9aa547c8441e4410a65a2ce7c21554"><div class="ttname"><a href="error_8hpp.html#aca9aa547c8441e4410a65a2ce7c21554">fatalErrorInFunction</a></div><div class="ttdeci">#define fatalErrorInFunction</div><div class="ttdoc">Report a fatal error and function name and exit the application.</div><div class="ttdef"><b>Definition:</b> <a href="error_8hpp_source.html#l00077">error.hpp:77</a></div></div>
<div class="ttc" id="aclasspFlow_1_1observer_html_ab403197d923198c2416d3f784281ee88"><div class="ttname"><a href="classpFlow_1_1observer.html#ab403197d923198c2416d3f784281ee88">pFlow::observer::subscriber_</a></div><div class="ttdeci">const subscriber * subscriber_</div><div class="ttdoc">pointer to subscriber</div><div class="ttdef"><b>Definition:</b> <a href="observer_8hpp_source.html#l00039">observer.hpp:39</a></div></div>
<div class="ttc" id="aclasspFlow_1_1observer_html_ae60104d9527f96b61e9bc2ea1e19c9f2"><div class="ttname"><a href="classpFlow_1_1observer.html#ae60104d9527f96b61e9bc2ea1e19c9f2">pFlow::observer::addToSubscriber</a></div><div class="ttdeci">void addToSubscriber(const subscriber *subscrbr, message msg)</div><div class="ttdef"><b>Definition:</b> <a href="observer_8cpp_source.html#l00067">observer.cpp:67</a></div></div>
<div class="ttc" id="aclasspFlow_1_1observer_html_af035b2f590ebbed9ace6ffaf3954a893"><div class="ttname"><a href="classpFlow_1_1observer.html#af035b2f590ebbed9ace6ffaf3954a893">pFlow::observer::~observer</a></div><div class="ttdeci">virtual ~observer()</div><div class="ttdef"><b>Definition:</b> <a href="observer_8cpp_source.html#l00044">observer.cpp:44</a></div></div>
<div class="ttc" id="aclasspFlow_1_1observer_html_a7533b1993f98fb6956bcd554d830c831"><div class="ttname"><a href="classpFlow_1_1observer.html#a7533b1993f98fb6956bcd554d830c831">pFlow::observer::changeSubscriber</a></div><div class="ttdeci">const subscriber * changeSubscriber(const subscriber *newSub)</div><div class="ttdef"><b>Definition:</b> <a href="observer_8cpp_source.html#l00024">observer.cpp:24</a></div></div>
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