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<div id="nav-path" class="navpath">
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<ul>
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<li class="navelem"><a class="el" href="dir_fead5dd071dfdbc55538a6c6aff7be40.html">rapidfuzz</a></li><li class="navelem"><a class="el" href="dir_a2554590b7241fc5e5dc4ba54d4c3e6a.html">details</a></li> </ul>
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<div class="header">
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<div class="headertitle"><div class="title">CharSet.hpp</div></div>
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<div class="contents">
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<div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span><span class="comment">/* SPDX-License-Identifier: MIT */</span></div>
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<div class="line"><a id="l00002" name="l00002"></a><span class="lineno"> 2</span><span class="comment">/* Copyright (c) 2022 Max Bachmann */</span></div>
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<div class="line"><a id="l00003" name="l00003"></a><span class="lineno"> 3</span> </div>
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<div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span><span class="preprocessor">#pragma once</span></div>
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<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span><span class="preprocessor">#include &lt;array&gt;</span></div>
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<div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span><span class="preprocessor">#include &lt;limits&gt;</span></div>
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<div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span><span class="preprocessor">#include &lt;stdint.h&gt;</span></div>
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<div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span><span class="preprocessor">#include &lt;stdio.h&gt;</span></div>
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<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span><span class="preprocessor">#include &lt;type_traits&gt;</span></div>
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<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span><span class="preprocessor">#include &lt;unordered_set&gt;</span></div>
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<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span> </div>
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<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span><span class="keyword">namespace </span>rapidfuzz {</div>
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<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span><span class="keyword">namespace </span>detail {</div>
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<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span> </div>
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<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span><span class="comment">/*</span></div>
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<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span><span class="comment"> * taken from https://stackoverflow.com/a/17251989</span></div>
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<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span><span class="comment"> */</span></div>
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<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T, <span class="keyword">typename</span> U&gt;</div>
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<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span><span class="keywordtype">bool</span> CanTypeFitValue(<span class="keyword">const</span> U value)</div>
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<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span>{</div>
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<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span> <span class="keyword">const</span> intmax_t botT = intmax_t(std::numeric_limits&lt;T&gt;::min());</div>
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<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span> <span class="keyword">const</span> intmax_t botU = intmax_t(std::numeric_limits&lt;U&gt;::min());</div>
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<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span> <span class="keyword">const</span> uintmax_t topT = uintmax_t(std::numeric_limits&lt;T&gt;::max());</div>
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<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span> <span class="keyword">const</span> uintmax_t topU = uintmax_t(std::numeric_limits&lt;U&gt;::max());</div>
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<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span> <span class="keywordflow">return</span> !((botT &gt; botU &amp;&amp; value &lt; static_cast&lt;U&gt;(botT)) || (topT &lt; topU &amp;&amp; value &gt; <span class="keyword">static_cast&lt;</span>U<span class="keyword">&gt;</span>(topT)));</div>
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<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span>}</div>
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<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span> </div>
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<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> CharT1, <span class="keywordtype">size_t</span> size = sizeof(CharT1)&gt;</div>
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<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span><span class="keyword">struct </span>CharSet;</div>
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<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span> </div>
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<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> CharT1&gt;</div>
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<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span><span class="keyword">struct </span>CharSet&lt;CharT1, 1&gt; {</div>
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<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span> <span class="keyword">using </span>UCharT1 = <span class="keyword">typename</span> std::make_unsigned&lt;CharT1&gt;::type;</div>
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<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span> </div>
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<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span> std::array&lt;bool, std::numeric_limits&lt;UCharT1&gt;::max() + 1&gt; m_val;</div>
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<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span> </div>
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<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span> CharSet() : m_val{}</div>
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<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span> {}</div>
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<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span> </div>
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<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span> <span class="keywordtype">void</span> insert(CharT1 ch)</div>
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<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span> {</div>
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<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span> m_val[UCharT1(ch)] = <span class="keyword">true</span>;</div>
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<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span> }</div>
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<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span> </div>
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<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span> <span class="keyword">template</span> &lt;<span class="keyword">typename</span> CharT2&gt;</div>
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<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span> <span class="keywordtype">bool</span> find(CharT2 ch)<span class="keyword"> const</span></div>
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<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span><span class="keyword"> </span>{</div>
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<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span> <span class="keywordflow">if</span> (!CanTypeFitValue&lt;CharT1&gt;(ch)) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span> </div>
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<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span> <span class="keywordflow">return</span> m_val[UCharT1(ch)];</div>
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<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span> }</div>
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<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span>};</div>
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<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span> </div>
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<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> CharT1, <span class="keywordtype">size_t</span> size&gt;</div>
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<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span><span class="keyword">struct </span>CharSet {</div>
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<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span> std::unordered_set&lt;CharT1&gt; m_val;</div>
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<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span> </div>
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<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span> CharSet() : m_val{}</div>
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<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span> {}</div>
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<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span> </div>
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<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span> <span class="keywordtype">void</span> insert(CharT1 ch)</div>
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<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span> {</div>
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<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span> m_val.insert(ch);</div>
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<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span> }</div>
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<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span> </div>
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<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span> <span class="keyword">template</span> &lt;<span class="keyword">typename</span> CharT2&gt;</div>
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<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span> <span class="keywordtype">bool</span> find(CharT2 ch)<span class="keyword"> const</span></div>
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<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span><span class="keyword"> </span>{</div>
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<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span> <span class="keywordflow">if</span> (!CanTypeFitValue&lt;CharT1&gt;(ch)) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span> </div>
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<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span> <span class="keywordflow">return</span> m_val.find(CharT1(ch)) != m_val.end();</div>
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<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span> }</div>
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<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span>};</div>
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<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span> </div>
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<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span>} <span class="comment">// namespace detail</span></div>
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<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span>} <span class="comment">// namespace rapidfuzz</span></div>
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