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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/> <meta http-equiv="X-UA-Compatible" content="IE=9"/> <meta name="generator" content="Doxygen 1.8.14"/> <meta name="viewport" content="width=device-width, initial-scale=1"/> <title>ICU 78.3: common/unicode/bytestrie.h Source File</title> <link href="tabs.css" rel="stylesheet" type="text/css"/> <script type="text/javascript" src="jquery.js"></script> <script type="text/javascript" src="dynsections.js"></script> <link href="search/search.css" rel="stylesheet" type="text/css"/> <script type="text/javascript" src="search/searchdata.js"></script> <script type="text/javascript" src="search/search.js"></script> <link href="doxygen.css" rel="stylesheet" type="text/css" /> </head> <body> <div id="top"><!-- do not remove this div, it is closed by doxygen! --> <div id="titlearea"> <table cellspacing="0" cellpadding="0"> <tbody> <tr style="height: 56px;"> <td id="projectalign" style="padding-left: 0.5em;"> <div id="projectname">ICU 78.3  <span id="projectnumber">78.3</span> </div> </td> </tr> </tbody> </table> </div> <!-- end header part --> <!-- Generated by Doxygen 1.8.14 --> <script type="text/javascript"> /* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&dn=gpl-2.0.txt GPL-v2 / var searchBox = new SearchBox("searchBox", "search",false,'Search'); / @license-end / </script> <script type="text/javascript" src="menudata.js"></script> <script type="text/javascript" src="menu.js"></script> <script type="text/javascript"> / @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&dn=gpl-2.0.txt GPL-v2 / $(function() { initMenu('',true,false,'search.php','Search'); $(document).ready(function() { init_search(); }); }); / @license-end /</script> <div id="main-nav"></div> <!-- window showing the filter options --> <div id="MSearchSelectWindow" onmouseover="return searchBox.OnSearchSelectShow()" onmouseout="return searchBox.OnSearchSelectHide()" onkeydown="return searchBox.OnSearchSelectKey(event)"> </div> <!-- iframe showing the search results (closed by default) --> <div id="MSearchResultsWindow"> <iframe src="javascript:void(0)" frameborder="0" name="MSearchResults" id="MSearchResults"> </iframe> </div> <div id="nav-path" class="navpath"> <ul> <li class="navelem"><a class="el" href="dir_bdd9a5d540de89e9fe90efdfc6973a4f.html">common</a></li><li class="navelem"><a class="el" href="dir_f59c6450ff718ff1b085cfd1c36acbd7.html">unicode</a></li> </ul> </div> </div><!-- top --> <div class="header"> <div class="headertitle"> <div class="title">bytestrie.h</div> </div> </div><!--header--> <div class="contents"> <a href="bytestrie_8h.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">// © 2016 and later: Unicode, Inc. and others.</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">// License & terms of use: http://www.unicode.org/copyright.html</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">/</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">******************************************************************************</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> Copyright (C) 2010-2012, International Business Machines</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">* Corporation and others. All Rights Reserved.</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">******************************************************************************</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> file name: bytestrie.h</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment">* encoding: UTF-8</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment">* tab size: 8 (not used)</span></div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment">* indentation:4</span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"></span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> created on: 2010sep25</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment">* created by: Markus W. Scherer</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment">/</span></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> <span class="preprocessor">#ifndef __BYTESTRIE_H__</span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="preprocessor">#define __BYTESTRIE_H__</span></div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span> </div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#include "<a class="code" href="utypes_8h.html">unicode/utypes.h</a>"</span></div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span> </div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor">#if U_SHOW_CPLUSPLUS_API</span></div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> </div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#include "<a class="code" href="stringpiece_8h.html">unicode/stringpiece.h</a>"</span></div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor">#include "<a class="code" href="uobject_8h.html">unicode/uobject.h</a>"</span></div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor">#include "<a class="code" href="ustringtrie_8h.html">unicode/ustringtrie.h</a>"</span></div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span> </div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="keyword">class </span>BytesTrieTest;</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> U_NAMESPACE_BEGIN</div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span> </div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="keyword">class </span>ByteSink;</div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="keyword">class </span>BytesTrieBuilder;</div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="keyword">class </span>CharString;</div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="keyword">class </span>UVector32;</div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span> </div><div class="line"><a name="l00055"></a><span class="lineno"><a class="line" href="classicu_1_1BytesTrie.html"> 55</a></span> <span class="keyword">class </span><a class="code" href="utypes_8h.html#a559955ec3bc692657c5d8b1c6de8e334">U_COMMON_API</a> <a class="code" href="classicu_1_1BytesTrie.html">BytesTrie</a> : <span class="keyword">public</span> <a class="code" href="classicu_1_1UMemory.html">UMemory</a> {</div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="keyword">public</span>:</div><div class="line"><a name="l00071"></a><span class="lineno"><a class="line" href="classicu_1_1BytesTrie.html#ad80f8e9d219cc6ccb159ea133244718f"> 71</a></span>  <a class="code" href="classicu_1_1BytesTrie.html#ad80f8e9d219cc6ccb159ea133244718f">BytesTrie</a>(<span class="keyword">const</span> <span class="keywordtype">void</span> trieBytes)</div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  : ownedArray_(nullptr), bytes_(static_cast<const uint8_t >(trieBytes)),</div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  pos_(bytes_), remainingMatchLength_(-1) {}</div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span> </div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  ~<a class="code" href="classicu_1_1BytesTrie.html">BytesTrie</a>();</div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span> </div><div class="line"><a name="l00087"></a><span class="lineno"><a class="line" href="classicu_1_1BytesTrie.html#aa228c8b87e2750808992ee65d8f6ae1e"> 87</a></span>  <a class="code" href="classicu_1_1BytesTrie.html#aa228c8b87e2750808992ee65d8f6ae1e">BytesTrie</a>(<span class="keyword">const</span> <a class="code" href="classicu_1_1BytesTrie.html">BytesTrie</a> &other)</div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  : ownedArray_(nullptr), bytes_(other.bytes_),</div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  pos_(other.pos_), remainingMatchLength_(other.remainingMatchLength_) {}</div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span> </div><div class="line"><a name="l00096"></a><span class="lineno"><a class="line" href="classicu_1_1BytesTrie.html#a48ae3393b8e84a4823fcd9fb1821cb43"> 96</a></span>  <a class="code" href="classicu_1_1BytesTrie.html">BytesTrie</a> &<a class="code" href="classicu_1_1BytesTrie.html#a48ae3393b8e84a4823fcd9fb1821cb43">reset</a>() {</div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  pos_=bytes_;</div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  remainingMatchLength_=-1;</div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="keywordflow">return</span> <span class="keyword">this</span>;</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> </div><div class="line"><a name="l00110"></a><span class="lineno"><a class="line" href="classicu_1_1BytesTrie.html#ad0c3af6d0f8d50d5a31e858b84b18025"> 110</a></span>  uint64_t <a class="code" href="classicu_1_1BytesTrie.html#ad0c3af6d0f8d50d5a31e858b84b18025">getState64</a>()<span class="keyword"> const </span>{</div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <span class="keywordflow">return</span> (static_cast<uint64_t>(remainingMatchLength_ + 2) << kState64RemainingShift) \|</div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  <span class="keyword">static_cast<</span>uint64_t<span class="keyword">></span>(pos_ - bytes_);</div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  }</div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span> </div><div class="line"><a name="l00129"></a><span class="lineno"><a class="line" href="classicu_1_1BytesTrie.html#a01f0cf2bbb69b96d73ebf891d82ad293"> 129</a></span>  <a class="code" href="classicu_1_1BytesTrie.html">BytesTrie</a> &<a class="code" href="classicu_1_1BytesTrie.html#a01f0cf2bbb69b96d73ebf891d82ad293">resetToState64</a>(uint64_t state) {</div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  remainingMatchLength_ = <span class="keyword">static_cast<</span>int32_t<span class="keyword">></span>(state >> kState64RemainingShift) - 2;</div><div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  pos_ = bytes_ + (state & kState64PosMask);</div><div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <span class="keywordflow">return</span> <span class="keyword">this</span>;</div><div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  }</div><div class="line"><a name="l00134"></a><span class="lineno"> 134</span> </div><div class="line"><a name="l00140"></a><span class="lineno"><a class="line" href="classicu_1_1BytesTrie_1_1State.html"> 140</a></span>  <span class="keyword">class </span><a class="code" href="classicu_1_1BytesTrie_1_1State.html">State</a> : <span class="keyword">public</span> <a class="code" href="classicu_1_1UMemory.html">UMemory</a> {</div><div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00146"></a><span class="lineno"><a class="line" href="classicu_1_1BytesTrie_1_1State.html#ace2b56645b7b51c3286845127019cdd4"> 146</a></span>  <a class="code" href="classicu_1_1BytesTrie_1_1State.html#ace2b56645b7b51c3286845127019cdd4">State</a>() { bytes=<span class="keyword">nullptr</span>; }</div><div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  <span class="keyword">private</span>:</div><div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  <span class="keyword">friend</span> <span class="keyword">class </span><a class="code" href="classicu_1_1BytesTrie.html">BytesTrie</a>;</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>  <span class="keyword">const</span> uint8_t bytes;</div><div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  <span class="keyword">const</span> uint8_t pos;</div><div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  int32_t remainingMatchLength;</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="l00162"></a><span class="lineno"><a class="line" href="classicu_1_1BytesTrie.html#abd0d973653f6d159bc50f0f364cce054"> 162</a></span>  <span class="keyword">const</span> <a class="code" href="classicu_1_1BytesTrie.html">BytesTrie</a> &<a class="code" href="classicu_1_1BytesTrie.html#abd0d973653f6d159bc50f0f364cce054">saveState</a>(<a class="code" href="classicu_1_1BytesTrie_1_1State.html">State</a> &state)<span class="keyword"> const </span>{</div><div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  state.bytes=bytes_;</div><div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  state.pos=pos_;</div><div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  state.remainingMatchLength=remainingMatchLength_;</div><div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  <span class="keywordflow">return</span> <span class="keyword">this</span>;</div><div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  }</div><div class="line"><a name="l00168"></a><span class="lineno"> 168</span> </div><div class="line"><a name="l00179"></a><span class="lineno"><a class="line" href="classicu_1_1BytesTrie.html#a460aed45ae9c2859f084d2e9b1418bd4"> 179</a></span>  <a class="code" href="classicu_1_1BytesTrie.html">BytesTrie</a> &<a class="code" href="classicu_1_1BytesTrie.html#a460aed45ae9c2859f084d2e9b1418bd4">resetToState</a>(<span class="keyword">const</span> <a class="code" href="classicu_1_1BytesTrie_1_1State.html">State</a> &state) {</div><div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  <span class="keywordflow">if</span>(bytes_==state.bytes && bytes_!=<span class="keyword">nullptr</span>) {</div><div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  pos_=state.pos;</div><div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  remainingMatchLength_=state.remainingMatchLength;</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">this</span>;</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="l00193"></a><span class="lineno"> 193</span>  <a class="code" href="ustringtrie_8h.html#a760046451d48a1551ba71162a31365bd">UStringTrieResult</a> current() <span class="keyword">const</span>;</div><div class="line"><a name="l00194"></a><span class="lineno"> 194</span> </div><div class="line"><a name="l00203"></a><span class="lineno"><a class="line" href="classicu_1_1BytesTrie.html#a21e94ec7cc629081ed6c1cb501a95026"> 203</a></span>  <span class="keyword">inline</span> <a class="code" href="ustringtrie_8h.html#a760046451d48a1551ba71162a31365bd">UStringTrieResult</a> <a class="code" href="classicu_1_1BytesTrie.html#a21e94ec7cc629081ed6c1cb501a95026">first</a>(int32_t inByte) {</div><div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  remainingMatchLength_=-1;</div><div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  <span class="keywordflow">if</span>(inByte<0) {</div><div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  inByte+=0x100;</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>  <span class="keywordflow">return</span> nextImpl(bytes_, inByte);</div><div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  }</div><div class="line"><a name="l00210"></a><span class="lineno"> 210</span> </div><div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  <a class="code" href="ustringtrie_8h.html#a760046451d48a1551ba71162a31365bd">UStringTrieResult</a> next(int32_t inByte);</div><div class="line"><a name="l00219"></a><span class="lineno"> 219</span> </div><div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  <a class="code" href="ustringtrie_8h.html#a760046451d48a1551ba71162a31365bd">UStringTrieResult</a> next(<span class="keyword">const</span> <span class="keywordtype">char</span> s, int32_t length);</div><div class="line"><a name="l00236"></a><span class="lineno"> 236</span> </div><div class="line"><a name="l00246"></a><span class="lineno"><a class="line" href="classicu_1_1BytesTrie.html#a0d3271ae57e9cd635dd2896c9110bb6a"> 246</a></span>  <span class="keyword">inline</span> int32_t <a class="code" href="classicu_1_1BytesTrie.html#a0d3271ae57e9cd635dd2896c9110bb6a">getValue</a>()<span class="keyword"> const </span>{</div><div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  <span class="keyword">const</span> uint8_t pos=pos_;</div><div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  int32_t leadByte=pos++;</div><div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  <span class="comment">// U_ASSERT(leadByte>=kMinValueLead);</span></div><div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  <span class="keywordflow">return</span> readValue(pos, leadByte>>1);</div><div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  }</div><div class="line"><a name="l00252"></a><span class="lineno"> 252</span> </div><div class="line"><a name="l00262"></a><span class="lineno"><a class="line" href="classicu_1_1BytesTrie.html#a36d9e909b6291ea6da8d9e84988d0b6c"> 262</a></span>  <span class="keyword">inline</span> <a class="code" href="umachine_8h.html#a349ef00011f20ccd1d3b424445681aa5">UBool</a> <a class="code" href="classicu_1_1BytesTrie.html#a36d9e909b6291ea6da8d9e84988d0b6c">hasUniqueValue</a>(int32_t &uniqueValue)<span class="keyword"> const </span>{</div><div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  <span class="keyword">const</span> uint8_t pos=pos_;</div><div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  <span class="comment">// Skip the rest of a pending linear-match node.</span></div><div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  <span class="keywordflow">return</span> pos!=<span class="keyword">nullptr</span> && findUniqueValue(pos+remainingMatchLength_+1, <span class="keyword">false</span>, uniqueValue);</div><div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  }</div><div class="line"><a name="l00267"></a><span class="lineno"> 267</span> </div><div class="line"><a name="l00276"></a><span class="lineno"> 276</span>  int32_t getNextBytes(<a class="code" href="classicu_1_1ByteSink.html">ByteSink</a> &out) <span class="keyword">const</span>;</div><div class="line"><a name="l00277"></a><span class="lineno"> 277</span> </div><div class="line"><a name="l00282"></a><span class="lineno"><a class="line" href="classicu_1_1BytesTrie_1_1Iterator.html"> 282</a></span>  <span class="keyword">class </span><a class="code" href="utypes_8h.html#a559955ec3bc692657c5d8b1c6de8e334">U_COMMON_API</a> <a class="code" href="classicu_1_1BytesTrie_1_1Iterator.html">Iterator</a> : <span class="keyword">public</span> <a class="code" href="classicu_1_1UMemory.html">UMemory</a> {</div><div class="line"><a name="l00283"></a><span class="lineno"> 283</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00295"></a><span class="lineno"> 295</span>  <a class="code" href="classicu_1_1BytesTrie_1_1Iterator.html">Iterator</a>(<span class="keyword">const</span> <span class="keywordtype">void</span> trieBytes, int32_t maxStringLength, <a class="code" href="utypes_8h.html#a3343c1c8a8377277046774691c98d78c">UErrorCode</a> &errorCode);</div><div class="line"><a name="l00296"></a><span class="lineno"> 296</span> </div><div class="line"><a name="l00308"></a><span class="lineno"> 308</span>  <a class="code" href="classicu_1_1BytesTrie_1_1Iterator.html">Iterator</a>(<span class="keyword">const</span> <a class="code" href="classicu_1_1BytesTrie.html">BytesTrie</a> &trie, int32_t maxStringLength, <a class="code" href="utypes_8h.html#a3343c1c8a8377277046774691c98d78c">UErrorCode</a> &errorCode);</div><div class="line"><a name="l00309"></a><span class="lineno"> 309</span> </div><div class="line"><a name="l00314"></a><span class="lineno"> 314</span>  ~<a class="code" href="classicu_1_1BytesTrie_1_1Iterator.html">Iterator</a>();</div><div class="line"><a name="l00315"></a><span class="lineno"> 315</span> </div><div class="line"><a name="l00321"></a><span class="lineno"> 321</span>  <a class="code" href="classicu_1_1BytesTrie_1_1Iterator.html">Iterator</a> &reset();</div><div class="line"><a name="l00322"></a><span class="lineno"> 322</span> </div><div class="line"><a name="l00327"></a><span class="lineno"> 327</span>  <a class="code" href="umachine_8h.html#a349ef00011f20ccd1d3b424445681aa5">UBool</a> hasNext() <span class="keyword">const</span>;</div><div class="line"><a name="l00328"></a><span class="lineno"> 328</span> </div><div class="line"><a name="l00343"></a><span class="lineno"> 343</span>  <a class="code" href="umachine_8h.html#a349ef00011f20ccd1d3b424445681aa5">UBool</a> next(<a class="code" href="utypes_8h.html#a3343c1c8a8377277046774691c98d78c">UErrorCode</a> &errorCode);</div><div class="line"><a name="l00344"></a><span class="lineno"> 344</span> </div><div class="line"><a name="l00349"></a><span class="lineno"> 349</span>  <a class="code" href="classicu_1_1StringPiece.html">StringPiece</a> getString() <span class="keyword">const</span>;</div><div class="line"><a name="l00354"></a><span class="lineno"><a class="line" href="classicu_1_1BytesTrie_1_1Iterator.html#acffa0f2fe9666fea319f40041e5dbb4c"> 354</a></span>  int32_t <a class="code" href="classicu_1_1BytesTrie_1_1Iterator.html#acffa0f2fe9666fea319f40041e5dbb4c">getValue</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> value_; }</div><div class="line"><a name="l00355"></a><span class="lineno"> 355</span> </div><div class="line"><a name="l00356"></a><span class="lineno"> 356</span>  <span class="keyword">private</span>:</div><div class="line"><a name="l00357"></a><span class="lineno"> 357</span>  <a class="code" href="umachine_8h.html#a349ef00011f20ccd1d3b424445681aa5">UBool</a> truncateAndStop();</div><div class="line"><a name="l00358"></a><span class="lineno"> 358</span> </div><div class="line"><a name="l00359"></a><span class="lineno"> 359</span>  <span class="keyword">const</span> uint8_t branchNext(<span class="keyword">const</span> uint8_t pos, int32_t length, <a class="code" href="utypes_8h.html#a3343c1c8a8377277046774691c98d78c">UErrorCode</a> &errorCode);</div><div class="line"><a name="l00360"></a><span class="lineno"> 360</span> </div><div class="line"><a name="l00361"></a><span class="lineno"> 361</span>  <span class="keyword">const</span> uint8_t bytes_;</div><div class="line"><a name="l00362"></a><span class="lineno"> 362</span>  <span class="keyword">const</span> uint8_t pos_;</div><div class="line"><a name="l00363"></a><span class="lineno"> 363</span>  <span class="keyword">const</span> uint8_t initialPos_;</div><div class="line"><a name="l00364"></a><span class="lineno"> 364</span>  int32_t remainingMatchLength_;</div><div class="line"><a name="l00365"></a><span class="lineno"> 365</span>  int32_t initialRemainingMatchLength_;</div><div class="line"><a name="l00366"></a><span class="lineno"> 366</span> </div><div class="line"><a name="l00367"></a><span class="lineno"> 367</span>  CharString str_;</div><div class="line"><a name="l00368"></a><span class="lineno"> 368</span>  int32_t maxLength_;</div><div class="line"><a name="l00369"></a><span class="lineno"> 369</span>  int32_t value_;</div><div class="line"><a name="l00370"></a><span class="lineno"> 370</span> </div><div class="line"><a name="l00371"></a><span class="lineno"> 371</span>  <span class="comment">// The stack stores pairs of integers for backtracking to another</span></div><div class="line"><a name="l00372"></a><span class="lineno"> 372</span>  <span class="comment">// outbound edge of a branch node.</span></div><div class="line"><a name="l00373"></a><span class="lineno"> 373</span>  <span class="comment">// The first integer is an offset from bytes_.</span></div><div class="line"><a name="l00374"></a><span class="lineno"> 374</span>  <span class="comment">// The second integer has the str_->length() from before the node in bits 15..0,</span></div><div class="line"><a name="l00375"></a><span class="lineno"> 375</span>  <span class="comment">// and the remaining branch length in bits 24..16. (Bits 31..25 are unused.)</span></div><div class="line"><a name="l00376"></a><span class="lineno"> 376</span>  <span class="comment">// (We could store the remaining branch length minus 1 in bits 23..16 and not use bits 31..24,</span></div><div class="line"><a name="l00377"></a><span class="lineno"> 377</span>  <span class="comment">// but the code looks more confusing that way.)</span></div><div class="line"><a name="l00378"></a><span class="lineno"> 378</span>  UVector32 stack_;</div><div class="line"><a name="l00379"></a><span class="lineno"> 379</span>  };</div><div class="line"><a name="l00380"></a><span class="lineno"> 380</span> </div><div class="line"><a name="l00381"></a><span class="lineno"> 381</span> <span class="keyword">private</span>:</div><div class="line"><a name="l00382"></a><span class="lineno"> 382</span>  <span class="keyword">friend</span> <span class="keyword">class </span><a class="code" href="classicu_1_1BytesTrieBuilder.html">BytesTrieBuilder</a>;</div><div class="line"><a name="l00383"></a><span class="lineno"> 383</span>  <span class="keyword">friend</span> class ::BytesTrieTest;</div><div class="line"><a name="l00384"></a><span class="lineno"> 384</span> </div><div class="line"><a name="l00391"></a><span class="lineno"> 391</span>  <a class="code" href="classicu_1_1BytesTrie.html">BytesTrie</a>(<span class="keywordtype">void</span> adoptBytes, <span class="keyword">const</span> <span class="keywordtype">void</span> trieBytes)</div><div class="line"><a name="l00392"></a><span class="lineno"> 392</span>  : ownedArray_(static_cast<uint8_t >(adoptBytes)),</div><div class="line"><a name="l00393"></a><span class="lineno"> 393</span>  bytes_(static_cast<const uint8_t >(trieBytes)),</div><div class="line"><a name="l00394"></a><span class="lineno"> 394</span>  pos_(bytes_), remainingMatchLength_(-1) {}</div><div class="line"><a name="l00395"></a><span class="lineno"> 395</span> </div><div class="line"><a name="l00396"></a><span class="lineno"> 396</span>  <span class="comment">// No assignment operator.</span></div><div class="line"><a name="l00397"></a><span class="lineno"> 397</span>  BytesTrie &operator=(<span class="keyword">const</span> BytesTrie &other) = <span class="keyword">delete</span>;</div><div class="line"><a name="l00398"></a><span class="lineno"> 398</span> </div><div class="line"><a name="l00399"></a><span class="lineno"> 399</span>  <span class="keyword">inline</span> <span class="keywordtype">void</span> stop() {</div><div class="line"><a name="l00400"></a><span class="lineno"> 400</span>  pos_=<span class="keyword">nullptr</span>;</div><div class="line"><a name="l00401"></a><span class="lineno"> 401</span>  }</div><div class="line"><a name="l00402"></a><span class="lineno"> 402</span> </div><div class="line"><a name="l00403"></a><span class="lineno"> 403</span>  <span class="comment">// Reads a compact 32-bit integer.</span></div><div class="line"><a name="l00404"></a><span class="lineno"> 404</span>  <span class="comment">// pos is already after the leadByte, and the lead byte is already shifted right by 1.</span></div><div class="line"><a name="l00405"></a><span class="lineno"> 405</span>  <span class="keyword">static</span> int32_t readValue(<span class="keyword">const</span> uint8_t pos, int32_t leadByte);</div><div class="line"><a name="l00406"></a><span class="lineno"> 406</span>  <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keyword">const</span> uint8_t skipValue(<span class="keyword">const</span> uint8_t pos, int32_t leadByte) {</div><div class="line"><a name="l00407"></a><span class="lineno"> 407</span>  <span class="comment">// U_ASSERT(leadByte>=kMinValueLead);</span></div><div class="line"><a name="l00408"></a><span class="lineno"> 408</span>  <span class="keywordflow">if</span>(leadByte>=(kMinTwoByteValueLead<<1)) {</div><div class="line"><a name="l00409"></a><span class="lineno"> 409</span>  <span class="keywordflow">if</span>(leadByte<(kMinThreeByteValueLead<<1)) {</div><div class="line"><a name="l00410"></a><span class="lineno"> 410</span>  ++pos;</div><div class="line"><a name="l00411"></a><span class="lineno"> 411</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span>(leadByte<(kFourByteValueLead<<1)) {</div><div class="line"><a name="l00412"></a><span class="lineno"> 412</span>  pos+=2;</div><div class="line"><a name="l00413"></a><span class="lineno"> 413</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00414"></a><span class="lineno"> 414</span>  pos+=3+((leadByte>>1)&1);</div><div class="line"><a name="l00415"></a><span class="lineno"> 415</span>  }</div><div class="line"><a name="l00416"></a><span class="lineno"> 416</span>  }</div><div class="line"><a name="l00417"></a><span class="lineno"> 417</span>  <span class="keywordflow">return</span> pos;</div><div class="line"><a name="l00418"></a><span class="lineno"> 418</span>  }</div><div class="line"><a name="l00419"></a><span class="lineno"> 419</span>  <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keyword">const</span> uint8_t skipValue(<span class="keyword">const</span> uint8_t pos) {</div><div class="line"><a name="l00420"></a><span class="lineno"> 420</span>  int32_t leadByte=pos++;</div><div class="line"><a name="l00421"></a><span class="lineno"> 421</span>  <span class="keywordflow">return</span> skipValue(pos, leadByte);</div><div class="line"><a name="l00422"></a><span class="lineno"> 422</span>  }</div><div class="line"><a name="l00423"></a><span class="lineno"> 423</span> </div><div class="line"><a name="l00424"></a><span class="lineno"> 424</span>  <span class="comment">// Reads a jump delta and jumps.</span></div><div class="line"><a name="l00425"></a><span class="lineno"> 425</span>  <span class="keyword">static</span> <span class="keyword">const</span> uint8_t jumpByDelta(<span class="keyword">const</span> uint8_t pos);</div><div class="line"><a name="l00426"></a><span class="lineno"> 426</span> </div><div class="line"><a name="l00427"></a><span class="lineno"> 427</span>  <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keyword">const</span> uint8_t skipDelta(<span class="keyword">const</span> uint8_t pos) {</div><div class="line"><a name="l00428"></a><span class="lineno"> 428</span>  int32_t delta=pos++;</div><div class="line"><a name="l00429"></a><span class="lineno"> 429</span>  <span class="keywordflow">if</span>(delta>=kMinTwoByteDeltaLead) {</div><div class="line"><a name="l00430"></a><span class="lineno"> 430</span>  <span class="keywordflow">if</span>(delta<kMinThreeByteDeltaLead) {</div><div class="line"><a name="l00431"></a><span class="lineno"> 431</span>  ++pos;</div><div class="line"><a name="l00432"></a><span class="lineno"> 432</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span>(delta<kFourByteDeltaLead) {</div><div class="line"><a name="l00433"></a><span class="lineno"> 433</span>  pos+=2;</div><div class="line"><a name="l00434"></a><span class="lineno"> 434</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00435"></a><span class="lineno"> 435</span>  pos+=3+(delta&1);</div><div class="line"><a name="l00436"></a><span class="lineno"> 436</span>  }</div><div class="line"><a name="l00437"></a><span class="lineno"> 437</span>  }</div><div class="line"><a name="l00438"></a><span class="lineno"> 438</span>  <span class="keywordflow">return</span> pos;</div><div class="line"><a name="l00439"></a><span class="lineno"> 439</span>  }</div><div class="line"><a name="l00440"></a><span class="lineno"> 440</span> </div><div class="line"><a name="l00441"></a><span class="lineno"> 441</span>  <span class="keyword">static</span> <span class="keyword">inline</span> <a class="code" href="ustringtrie_8h.html#a760046451d48a1551ba71162a31365bd">UStringTrieResult</a> valueResult(int32_t node) {</div><div class="line"><a name="l00442"></a><span class="lineno"> 442</span>  <span class="keywordflow">return</span> <span class="keyword">static_cast<</span><a class="code" href="ustringtrie_8h.html#a760046451d48a1551ba71162a31365bd">UStringTrieResult</a><span class="keyword">></span>(<a class="code" href="ustringtrie_8h.html#a760046451d48a1551ba71162a31365bda62f2fef78e07bab5f68fa803b581504f">USTRINGTRIE_INTERMEDIATE_VALUE</a> - (node & kValueIsFinal));</div><div class="line"><a name="l00443"></a><span class="lineno"> 443</span>  }</div><div class="line"><a name="l00444"></a><span class="lineno"> 444</span> </div><div class="line"><a name="l00445"></a><span class="lineno"> 445</span>  <span class="comment">// Handles a branch node for both next(byte) and next(string).</span></div><div class="line"><a name="l00446"></a><span class="lineno"> 446</span>  <a class="code" href="ustringtrie_8h.html#a760046451d48a1551ba71162a31365bd">UStringTrieResult</a> branchNext(<span class="keyword">const</span> uint8_t pos, int32_t length, int32_t inByte);</div><div class="line"><a name="l00447"></a><span class="lineno"> 447</span> </div><div class="line"><a name="l00448"></a><span class="lineno"> 448</span>  <span class="comment">// Requires remainingLength_<0.</span></div><div class="line"><a name="l00449"></a><span class="lineno"> 449</span>  <a class="code" href="ustringtrie_8h.html#a760046451d48a1551ba71162a31365bd">UStringTrieResult</a> nextImpl(<span class="keyword">const</span> uint8_t pos, int32_t inByte);</div><div class="line"><a name="l00450"></a><span class="lineno"> 450</span> </div><div class="line"><a name="l00451"></a><span class="lineno"> 451</span>  <span class="comment">// Helper functions for hasUniqueValue().</span></div><div class="line"><a name="l00452"></a><span class="lineno"> 452</span>  <span class="comment">// Recursively finds a unique value (or whether there is not a unique one)</span></div><div class="line"><a name="l00453"></a><span class="lineno"> 453</span>  <span class="comment">// from a branch.</span></div><div class="line"><a name="l00454"></a><span class="lineno"> 454</span>  <span class="keyword">static</span> <span class="keyword">const</span> uint8_t findUniqueValueFromBranch(<span class="keyword">const</span> uint8_t pos, int32_t length,</div><div class="line"><a name="l00455"></a><span class="lineno"> 455</span>  <a class="code" href="umachine_8h.html#a349ef00011f20ccd1d3b424445681aa5">UBool</a> haveUniqueValue, int32_t &uniqueValue);</div><div class="line"><a name="l00456"></a><span class="lineno"> 456</span>  <span class="comment">// Recursively finds a unique value (or whether there is not a unique one)</span></div><div class="line"><a name="l00457"></a><span class="lineno"> 457</span>  <span class="comment">// starting from a position on a node lead byte.</span></div><div class="line"><a name="l00458"></a><span class="lineno"> 458</span>  <span class="keyword">static</span> <a class="code" href="umachine_8h.html#a349ef00011f20ccd1d3b424445681aa5">UBool</a> findUniqueValue(<span class="keyword">const</span> uint8_t pos, <a class="code" href="umachine_8h.html#a349ef00011f20ccd1d3b424445681aa5">UBool</a> haveUniqueValue, int32_t &uniqueValue);</div><div class="line"><a name="l00459"></a><span class="lineno"> 459</span> </div><div class="line"><a name="l00460"></a><span class="lineno"> 460</span>  <span class="comment">// Helper functions for getNextBytes().</span></div><div class="line"><a name="l00461"></a><span class="lineno"> 461</span>  <span class="comment">// getNextBytes() when pos is on a branch node.</span></div><div class="line"><a name="l00462"></a><span class="lineno"> 462</span>  <span class="keyword">static</span> <span class="keywordtype">void</span> getNextBranchBytes(<span class="keyword">const</span> uint8_t pos, int32_t length, ByteSink &out);</div><div class="line"><a name="l00463"></a><span class="lineno"> 463</span>  <span class="keyword">static</span> <span class="keywordtype">void</span> append(ByteSink &out, <span class="keywordtype">int</span> c);</div><div class="line"><a name="l00464"></a><span class="lineno"> 464</span> </div><div class="line"><a name="l00465"></a><span class="lineno"> 465</span>  <span class="comment">// BytesTrie data structure</span></div><div class="line"><a name="l00466"></a><span class="lineno"> 466</span>  <span class="comment">//</span></div><div class="line"><a name="l00467"></a><span class="lineno"> 467</span>  <span class="comment">// The trie consists of a series of byte-serialized nodes for incremental</span></div><div class="line"><a name="l00468"></a><span class="lineno"> 468</span>  <span class="comment">// string/byte sequence matching. The root node is at the beginning of the trie data.</span></div><div class="line"><a name="l00469"></a><span class="lineno"> 469</span>  <span class="comment">//</span></div><div class="line"><a name="l00470"></a><span class="lineno"> 470</span>  <span class="comment">// Types of nodes are distinguished by their node lead byte ranges.</span></div><div class="line"><a name="l00471"></a><span class="lineno"> 471</span>  <span class="comment">// After each node, except a final-value node, another node follows to</span></div><div class="line"><a name="l00472"></a><span class="lineno"> 472</span>  <span class="comment">// encode match values or continue matching further bytes.</span></div><div class="line"><a name="l00473"></a><span class="lineno"> 473</span>  <span class="comment">//</span></div><div class="line"><a name="l00474"></a><span class="lineno"> 474</span>  <span class="comment">// Node types:</span></div><div class="line"><a name="l00475"></a><span class="lineno"> 475</span>  <span class="comment">// - Value node: Stores a 32-bit integer in a compact, variable-length format.</span></div><div class="line"><a name="l00476"></a><span class="lineno"> 476</span>  <span class="comment">// The value is for the string/byte sequence so far.</span></div><div class="line"><a name="l00477"></a><span class="lineno"> 477</span>  <span class="comment">// One node bit indicates whether the value is final or whether</span></div><div class="line"><a name="l00478"></a><span class="lineno"> 478</span>  <span class="comment">// matching continues with the next node.</span></div><div class="line"><a name="l00479"></a><span class="lineno"> 479</span>  <span class="comment">// - Linear-match node: Matches a number of bytes.</span></div><div class="line"><a name="l00480"></a><span class="lineno"> 480</span>  <span class="comment">// - Branch node: Branches to other nodes according to the current input byte.</span></div><div class="line"><a name="l00481"></a><span class="lineno"> 481</span>  <span class="comment">// The node byte is the length of the branch (number of bytes to select from)</span></div><div class="line"><a name="l00482"></a><span class="lineno"> 482</span>  <span class="comment">// minus 1. It is followed by a sub-node:</span></div><div class="line"><a name="l00483"></a><span class="lineno"> 483</span>  <span class="comment">// - If the length is at most kMaxBranchLinearSubNodeLength, then</span></div><div class="line"><a name="l00484"></a><span class="lineno"> 484</span>  <span class="comment">// there are length-1 (key, value) pairs and then one more comparison byte.</span></div><div class="line"><a name="l00485"></a><span class="lineno"> 485</span>  <span class="comment">// If one of the key bytes matches, then the value is either a final value for</span></div><div class="line"><a name="l00486"></a><span class="lineno"> 486</span>  <span class="comment">// the string/byte sequence so far, or a "jump" delta to the next node.</span></div><div class="line"><a name="l00487"></a><span class="lineno"> 487</span>  <span class="comment">// If the last byte matches, then matching continues with the next node.</span></div><div class="line"><a name="l00488"></a><span class="lineno"> 488</span>  <span class="comment">// (Values have the same encoding as value nodes.)</span></div><div class="line"><a name="l00489"></a><span class="lineno"> 489</span>  <span class="comment">// - If the length is greater than kMaxBranchLinearSubNodeLength, then</span></div><div class="line"><a name="l00490"></a><span class="lineno"> 490</span>  <span class="comment">// there is one byte and one "jump" delta.</span></div><div class="line"><a name="l00491"></a><span class="lineno"> 491</span>  <span class="comment">// If the input byte is less than the sub-node byte, then "jump" by delta to</span></div><div class="line"><a name="l00492"></a><span class="lineno"> 492</span>  <span class="comment">// the next sub-node which will have a length of length/2.</span></div><div class="line"><a name="l00493"></a><span class="lineno"> 493</span>  <span class="comment">// (The delta has its own compact encoding.)</span></div><div class="line"><a name="l00494"></a><span class="lineno"> 494</span>  <span class="comment">// Otherwise, skip the "jump" delta to the next sub-node</span></div><div class="line"><a name="l00495"></a><span class="lineno"> 495</span>  <span class="comment">// which will have a length of length-length/2.</span></div><div class="line"><a name="l00496"></a><span class="lineno"> 496</span> </div><div class="line"><a name="l00497"></a><span class="lineno"> 497</span>  <span class="comment">// Node lead byte values.</span></div><div class="line"><a name="l00498"></a><span class="lineno"> 498</span> </div><div class="line"><a name="l00499"></a><span class="lineno"> 499</span>  <span class="comment">// 00..0f: Branch node. If node!=0 then the length is node+1, otherwise</span></div><div class="line"><a name="l00500"></a><span class="lineno"> 500</span>  <span class="comment">// the length is one more than the next byte.</span></div><div class="line"><a name="l00501"></a><span class="lineno"> 501</span> </div><div class="line"><a name="l00502"></a><span class="lineno"> 502</span>  <span class="comment">// For a branch sub-node with at most this many entries, we drop down</span></div><div class="line"><a name="l00503"></a><span class="lineno"> 503</span>  <span class="comment">// to a linear search.</span></div><div class="line"><a name="l00504"></a><span class="lineno"> 504</span>  <span class="keyword">static</span> <span class="keyword">const</span> int32_t kMaxBranchLinearSubNodeLength=5;</div><div class="line"><a name="l00505"></a><span class="lineno"> 505</span> </div><div class="line"><a name="l00506"></a><span class="lineno"> 506</span>  <span class="comment">// 10..1f: Linear-match node, match 1..16 bytes and continue reading the next node.</span></div><div class="line"><a name="l00507"></a><span class="lineno"> 507</span>  <span class="keyword">static</span> <span class="keyword">const</span> int32_t kMinLinearMatch=0x10;</div><div class="line"><a name="l00508"></a><span class="lineno"> 508</span>  <span class="keyword">static</span> <span class="keyword">const</span> int32_t kMaxLinearMatchLength=0x10;</div><div class="line"><a name="l00509"></a><span class="lineno"> 509</span> </div><div class="line"><a name="l00510"></a><span class="lineno"> 510</span>  <span class="comment">// 20..ff: Variable-length value node.</span></div><div class="line"><a name="l00511"></a><span class="lineno"> 511</span>  <span class="comment">// If odd, the value is final. (Otherwise, intermediate value or jump delta.)</span></div><div class="line"><a name="l00512"></a><span class="lineno"> 512</span>  <span class="comment">// Then shift-right by 1 bit.</span></div><div class="line"><a name="l00513"></a><span class="lineno"> 513</span>  <span class="comment">// The remaining lead byte value indicates the number of following bytes (0..4)</span></div><div class="line"><a name="l00514"></a><span class="lineno"> 514</span>  <span class="comment">// and contains the value's top bits.</span></div><div class="line"><a name="l00515"></a><span class="lineno"> 515</span>  <span class="keyword">static</span> <span class="keyword">const</span> int32_t kMinValueLead=kMinLinearMatch+kMaxLinearMatchLength; <span class="comment">// 0x20</span></div><div class="line"><a name="l00516"></a><span class="lineno"> 516</span>  <span class="comment">// It is a final value if bit 0 is set.</span></div><div class="line"><a name="l00517"></a><span class="lineno"> 517</span>  <span class="keyword">static</span> <span class="keyword">const</span> int32_t kValueIsFinal=1;</div><div class="line"><a name="l00518"></a><span class="lineno"> 518</span> </div><div class="line"><a name="l00519"></a><span class="lineno"> 519</span>  <span class="comment">// Compact value: After testing bit 0, shift right by 1 and then use the following thresholds.</span></div><div class="line"><a name="l00520"></a><span class="lineno"> 520</span>  <span class="keyword">static</span> <span class="keyword">const</span> int32_t kMinOneByteValueLead=kMinValueLead/2; <span class="comment">// 0x10</span></div><div class="line"><a name="l00521"></a><span class="lineno"> 521</span>  <span class="keyword">static</span> <span class="keyword">const</span> int32_t kMaxOneByteValue=0x40; <span class="comment">// At least 6 bits in the first byte.</span></div><div class="line"><a name="l00522"></a><span class="lineno"> 522</span> </div><div class="line"><a name="l00523"></a><span class="lineno"> 523</span>  <span class="keyword">static</span> <span class="keyword">const</span> int32_t kMinTwoByteValueLead=kMinOneByteValueLead+kMaxOneByteValue+1; <span class="comment">// 0x51</span></div><div class="line"><a name="l00524"></a><span class="lineno"> 524</span>  <span class="keyword">static</span> <span class="keyword">const</span> int32_t kMaxTwoByteValue=0x1aff;</div><div class="line"><a name="l00525"></a><span class="lineno"> 525</span> </div><div class="line"><a name="l00526"></a><span class="lineno"> 526</span>  <span class="keyword">static</span> <span class="keyword">const</span> int32_t kMinThreeByteValueLead=kMinTwoByteValueLead+(kMaxTwoByteValue>>8)+1; <span class="comment">// 0x6c</span></div><div class="line"><a name="l00527"></a><span class="lineno"> 527</span>  <span class="keyword">static</span> <span class="keyword">const</span> int32_t kFourByteValueLead=0x7e;</div><div class="line"><a name="l00528"></a><span class="lineno"> 528</span> </div><div class="line"><a name="l00529"></a><span class="lineno"> 529</span>  <span class="comment">// A little more than Unicode code points. (0x11ffff)</span></div><div class="line"><a name="l00530"></a><span class="lineno"> 530</span>  <span class="keyword">static</span> <span class="keyword">const</span> int32_t kMaxThreeByteValue=((kFourByteValueLead-kMinThreeByteValueLead)<<16)-1;</div><div class="line"><a name="l00531"></a><span class="lineno"> 531</span> </div><div class="line"><a name="l00532"></a><span class="lineno"> 532</span>  <span class="keyword">static</span> <span class="keyword">const</span> int32_t kFiveByteValueLead=0x7f;</div><div class="line"><a name="l00533"></a><span class="lineno"> 533</span> </div><div class="line"><a name="l00534"></a><span class="lineno"> 534</span>  <span class="comment">// Compact delta integers.</span></div><div class="line"><a name="l00535"></a><span class="lineno"> 535</span>  <span class="keyword">static</span> <span class="keyword">const</span> int32_t kMaxOneByteDelta=0xbf;</div><div class="line"><a name="l00536"></a><span class="lineno"> 536</span>  <span class="keyword">static</span> <span class="keyword">const</span> int32_t kMinTwoByteDeltaLead=kMaxOneByteDelta+1; <span class="comment">// 0xc0</span></div><div class="line"><a name="l00537"></a><span class="lineno"> 537</span>  <span class="keyword">static</span> <span class="keyword">const</span> int32_t kMinThreeByteDeltaLead=0xf0;</div><div class="line"><a name="l00538"></a><span class="lineno"> 538</span>  <span class="keyword">static</span> <span class="keyword">const</span> int32_t kFourByteDeltaLead=0xfe;</div><div class="line"><a name="l00539"></a><span class="lineno"> 539</span>  <span class="keyword">static</span> <span class="keyword">const</span> int32_t kFiveByteDeltaLead=0xff;</div><div class="line"><a name="l00540"></a><span class="lineno"> 540</span> </div><div class="line"><a name="l00541"></a><span class="lineno"> 541</span>  <span class="keyword">static</span> <span class="keyword">const</span> int32_t kMaxTwoByteDelta=((kMinThreeByteDeltaLead-kMinTwoByteDeltaLead)<<8)-1; <span class="comment">// 0x2fff</span></div><div class="line"><a name="l00542"></a><span class="lineno"> 542</span>  <span class="keyword">static</span> <span class="keyword">const</span> int32_t kMaxThreeByteDelta=((kFourByteDeltaLead-kMinThreeByteDeltaLead)<<16)-1; <span class="comment">// 0xdffff</span></div><div class="line"><a name="l00543"></a><span class="lineno"> 543</span> </div><div class="line"><a name="l00544"></a><span class="lineno"> 544</span>  <span class="comment">// For getState64():</span></div><div class="line"><a name="l00545"></a><span class="lineno"> 545</span>  <span class="comment">// The remainingMatchLength_ is -1..14=(kMaxLinearMatchLength=0x10)-2</span></div><div class="line"><a name="l00546"></a><span class="lineno"> 546</span>  <span class="comment">// so we need at least 5 bits for that.</span></div><div class="line"><a name="l00547"></a><span class="lineno"> 547</span>  <span class="comment">// We add 2 to store it as a positive value 1..16=kMaxLinearMatchLength.</span></div><div class="line"><a name="l00548"></a><span class="lineno"> 548</span>  <span class="keyword">static</span> constexpr int32_t kState64RemainingShift = 59;</div><div class="line"><a name="l00549"></a><span class="lineno"> 549</span>  <span class="keyword">static</span> constexpr uint64_t kState64PosMask = (<a class="code" href="umachine_8h.html#a26a7bac63d90ef61175acb9f6fc4f2ca">UINT64_C</a>(1) << kState64RemainingShift) - 1;</div><div class="line"><a name="l00550"></a><span class="lineno"> 550</span> </div><div class="line"><a name="l00551"></a><span class="lineno"> 551</span>  uint8_t ownedArray_;</div><div class="line"><a name="l00552"></a><span class="lineno"> 552</span> </div><div class="line"><a name="l00553"></a><span class="lineno"> 553</span>  <span class="comment">// Fixed value referencing the BytesTrie bytes.</span></div><div class="line"><a name="l00554"></a><span class="lineno"> 554</span>  <span class="keyword">const</span> uint8_t bytes_;</div><div class="line"><a name="l00555"></a><span class="lineno"> 555</span> </div><div class="line"><a name="l00556"></a><span class="lineno"> 556</span>  <span class="comment">// Iterator variables.</span></div><div class="line"><a name="l00557"></a><span class="lineno"> 557</span> </div><div class="line"><a name="l00558"></a><span class="lineno"> 558</span>  <span class="comment">// Pointer to next trie byte to read. nullptr if no more matches.</span></div><div class="line"><a name="l00559"></a><span class="lineno"> 559</span>  <span class="keyword">const</span> uint8_t pos_;</div><div class="line"><a name="l00560"></a><span class="lineno"> 560</span>  <span class="comment">// Remaining length of a linear-match node, minus 1. Negative if not in such a node.</span></div><div class="line"><a name="l00561"></a><span class="lineno"> 561</span>  int32_t remainingMatchLength_;</div><div class="line"><a name="l00562"></a><span class="lineno"> 562</span> };</div><div class="line"><a name="l00563"></a><span class="lineno"> 563</span> </div><div class="line"><a name="l00564"></a><span class="lineno"> 564</span> U_NAMESPACE_END</div><div class="line"><a name="l00565"></a><span class="lineno"> 565</span> </div><div class="line"><a name="l00566"></a><span class="lineno"> 566</span> <span class="preprocessor">#endif </span><span class="comment">/ U_SHOW_CPLUSPLUS_API /</span><span class="preprocessor"></span></div><div class="line"><a name="l00567"></a><span class="lineno"> 567</span> </div><div class="line"><a name="l00568"></a><span class="lineno"> 568</span> <span class="preprocessor">#endif // __BYTESTRIE_H__</span></div><div class="ttc" id="classicu_1_1BytesTrie_html_a01f0cf2bbb69b96d73ebf891d82ad293"><div class="ttname"><a href="classicu_1_1BytesTrie.html#a01f0cf2bbb69b96d73ebf891d82ad293">icu::BytesTrie::resetToState64</a></div><div class="ttdeci">BytesTrie & resetToState64(uint64_t state)</div><div class="ttdoc">Resets this trie to the saved state. </div><div class="ttdef"><b>Definition:</b> <a href="bytestrie_8h_source.html#l00129">bytestrie.h:129</a></div></div> <div class="ttc" id="classicu_1_1BytesTrieBuilder_html"><div class="ttname"><a href="classicu_1_1BytesTrieBuilder.html">icu::BytesTrieBuilder</a></div><div class="ttdoc">Builder class for BytesTrie. </div><div class="ttdef"><b>Definition:</b> <a href="bytestriebuilder_8h_source.html#l00045">bytestriebuilder.h:45</a></div></div> <div class="ttc" id="classicu_1_1BytesTrie_1_1State_html"><div class="ttname"><a href="classicu_1_1BytesTrie_1_1State.html">icu::BytesTrie::State</a></div><div class="ttdoc">BytesTrie state object, for saving a trie&#39;s current state and resetting the trie back to this state l...</div><div class="ttdef"><b>Definition:</b> <a href="bytestrie_8h_source.html#l00140">bytestrie.h:140</a></div></div> <div class="ttc" id="ustringtrie_8h_html_a760046451d48a1551ba71162a31365bd"><div class="ttname"><a href="ustringtrie_8h.html#a760046451d48a1551ba71162a31365bd">UStringTrieResult</a></div><div class="ttdeci">UStringTrieResult</div><div class="ttdoc">Return values for BytesTrie::next(), UCharsTrie::next() and similar methods. </div><div class="ttdef"><b>Definition:</b> <a href="ustringtrie_8h_source.html#l00035">ustringtrie.h:35</a></div></div> <div class="ttc" id="classicu_1_1BytesTrie_html_ad80f8e9d219cc6ccb159ea133244718f"><div class="ttname"><a href="classicu_1_1BytesTrie.html#ad80f8e9d219cc6ccb159ea133244718f">icu::BytesTrie::BytesTrie</a></div><div class="ttdeci">BytesTrie(const void trieBytes)</div><div class="ttdoc">Constructs a BytesTrie reader instance. </div><div class="ttdef"><b>Definition:</b> <a href="bytestrie_8h_source.html#l00071">bytestrie.h:71</a></div></div> <div class="ttc" id="classicu_1_1ByteSink_html"><div class="ttname"><a href="classicu_1_1ByteSink.html">icu::ByteSink</a></div><div class="ttdoc">A ByteSink can be filled with bytes. </div><div class="ttdef"><b>Definition:</b> <a href="bytestream_8h_source.html#l00055">bytestream.h:55</a></div></div> <div class="ttc" id="classicu_1_1BytesTrie_html_a36d9e909b6291ea6da8d9e84988d0b6c"><div class="ttname"><a href="classicu_1_1BytesTrie.html#a36d9e909b6291ea6da8d9e84988d0b6c">icu::BytesTrie::hasUniqueValue</a></div><div class="ttdeci">UBool hasUniqueValue(int32_t &uniqueValue) const</div><div class="ttdoc">Determines whether all byte sequences reachable from the current state map to the same value...</div><div class="ttdef"><b>Definition:</b> <a href="bytestrie_8h_source.html#l00262">bytestrie.h:262</a></div></div> <div class="ttc" id="classicu_1_1BytesTrie_html"><div class="ttname"><a href="classicu_1_1BytesTrie.html">icu::BytesTrie</a></div><div class="ttdoc">Light-weight, non-const reader class for a BytesTrie. </div><div class="ttdef"><b>Definition:</b> <a href="bytestrie_8h_source.html#l00055">bytestrie.h:55</a></div></div> <div class="ttc" id="classicu_1_1BytesTrie_html_a48ae3393b8e84a4823fcd9fb1821cb43"><div class="ttname"><a href="classicu_1_1BytesTrie.html#a48ae3393b8e84a4823fcd9fb1821cb43">icu::BytesTrie::reset</a></div><div class="ttdeci">BytesTrie & reset()</div><div class="ttdoc">Resets this trie to its initial state. </div><div class="ttdef"><b>Definition:</b> <a href="bytestrie_8h_source.html#l00096">bytestrie.h:96</a></div></div> <div class="ttc" id="stringpiece_8h_html"><div class="ttname"><a href="stringpiece_8h.html">stringpiece.h</a></div><div class="ttdoc">C++ API: StringPiece: Read-only byte string wrapper class. </div></div> <div class="ttc" id="classicu_1_1BytesTrie_1_1Iterator_html_acffa0f2fe9666fea319f40041e5dbb4c"><div class="ttname"><a href="classicu_1_1BytesTrie_1_1Iterator.html#acffa0f2fe9666fea319f40041e5dbb4c">icu::BytesTrie::Iterator::getValue</a></div><div class="ttdeci">int32_t getValue() const</div><div class="ttdef"><b>Definition:</b> <a href="bytestrie_8h_source.html#l00354">bytestrie.h:354</a></div></div> <div class="ttc" id="classicu_1_1BytesTrie_html_a21e94ec7cc629081ed6c1cb501a95026"><div class="ttname"><a href="classicu_1_1BytesTrie.html#a21e94ec7cc629081ed6c1cb501a95026">icu::BytesTrie::first</a></div><div class="ttdeci">UStringTrieResult first(int32_t inByte)</div><div class="ttdoc">Traverses the trie from the initial state for this input byte. </div><div class="ttdef"><b>Definition:</b> <a href="bytestrie_8h_source.html#l00203">bytestrie.h:203</a></div></div> <div class="ttc" id="classicu_1_1BytesTrie_html_a0d3271ae57e9cd635dd2896c9110bb6a"><div class="ttname"><a href="classicu_1_1BytesTrie.html#a0d3271ae57e9cd635dd2896c9110bb6a">icu::BytesTrie::getValue</a></div><div class="ttdeci">int32_t getValue() const</div><div class="ttdoc">Returns a matching byte sequence&#39;s value if called immediately after current()/first()/next() returne...</div><div class="ttdef"><b>Definition:</b> <a href="bytestrie_8h_source.html#l00246">bytestrie.h:246</a></div></div> <div class="ttc" id="classicu_1_1BytesTrie_html_aa228c8b87e2750808992ee65d8f6ae1e"><div class="ttname"><a href="classicu_1_1BytesTrie.html#aa228c8b87e2750808992ee65d8f6ae1e">icu::BytesTrie::BytesTrie</a></div><div class="ttdeci">BytesTrie(const BytesTrie &other)</div><div class="ttdoc">Copy constructor, copies the other trie reader object and its state, but not the byte array which wil...</div><div class="ttdef"><b>Definition:</b> <a href="bytestrie_8h_source.html#l00087">bytestrie.h:87</a></div></div> <div class="ttc" id="classicu_1_1BytesTrie_1_1State_html_ace2b56645b7b51c3286845127019cdd4"><div class="ttname"><a href="classicu_1_1BytesTrie_1_1State.html#ace2b56645b7b51c3286845127019cdd4">icu::BytesTrie::State::State</a></div><div class="ttdeci">State()</div><div class="ttdoc">Constructs an empty State. </div><div class="ttdef"><b>Definition:</b> <a href="bytestrie_8h_source.html#l00146">bytestrie.h:146</a></div></div> <div class="ttc" id="classicu_1_1BytesTrie_1_1Iterator_html"><div class="ttname"><a href="classicu_1_1BytesTrie_1_1Iterator.html">icu::BytesTrie::Iterator</a></div><div class="ttdoc">Iterator for all of the (byte sequence, value) pairs in a BytesTrie. </div><div class="ttdef"><b>Definition:</b> <a href="bytestrie_8h_source.html#l00282">bytestrie.h:282</a></div></div> <div class="ttc" id="uobject_8h_html"><div class="ttname"><a href="uobject_8h.html">uobject.h</a></div><div class="ttdoc">C++ API: Common ICU base class UObject. </div></div> <div class="ttc" id="classicu_1_1BytesTrie_html_ad0c3af6d0f8d50d5a31e858b84b18025"><div class="ttname"><a href="classicu_1_1BytesTrie.html#ad0c3af6d0f8d50d5a31e858b84b18025">icu::BytesTrie::getState64</a></div><div class="ttdeci">uint64_t getState64() const</div><div class="ttdoc">Returns the state of this trie as a 64-bit integer. </div><div class="ttdef"><b>Definition:</b> <a href="bytestrie_8h_source.html#l00110">bytestrie.h:110</a></div></div> <div class="ttc" id="utypes_8h_html_a3343c1c8a8377277046774691c98d78c"><div class="ttname"><a href="utypes_8h.html#a3343c1c8a8377277046774691c98d78c">UErrorCode</a></div><div class="ttdeci">UErrorCode</div><div class="ttdoc">Standard ICU4C error code type, a substitute for exceptions. </div><div class="ttdef"><b>Definition:</b> <a href="utypes_8h_source.html#l00509">utypes.h:509</a></div></div> <div class="ttc" id="ustringtrie_8h_html"><div class="ttname"><a href="ustringtrie_8h.html">ustringtrie.h</a></div><div class="ttdoc">C API: Helper definitions for dictionary trie APIs. </div></div> <div class="ttc" id="classicu_1_1BytesTrie_html_abd0d973653f6d159bc50f0f364cce054"><div class="ttname"><a href="classicu_1_1BytesTrie.html#abd0d973653f6d159bc50f0f364cce054">icu::BytesTrie::saveState</a></div><div class="ttdeci">const BytesTrie & saveState(State &state) const</div><div class="ttdoc">Saves the state of this trie. </div><div class="ttdef"><b>Definition:</b> <a href="bytestrie_8h_source.html#l00162">bytestrie.h:162</a></div></div> <div class="ttc" id="utypes_8h_html"><div class="ttname"><a href="utypes_8h.html">utypes.h</a></div><div class="ttdoc">Basic definitions for ICU, for both C and C++ APIs. </div></div> <div class="ttc" id="utypes_8h_html_a559955ec3bc692657c5d8b1c6de8e334"><div class="ttname"><a href="utypes_8h.html#a559955ec3bc692657c5d8b1c6de8e334">U_COMMON_API</a></div><div class="ttdeci">#define U_COMMON_API</div><div class="ttdoc">Set to export library symbols from inside the common library, and to import them from outside...</div><div class="ttdef"><b>Definition:</b> <a href="utypes_8h_source.html#l00315">utypes.h:315</a></div></div> <div class="ttc" id="ustringtrie_8h_html_a760046451d48a1551ba71162a31365bda62f2fef78e07bab5f68fa803b581504f"><div class="ttname"><a href="ustringtrie_8h.html#a760046451d48a1551ba71162a31365bda62f2fef78e07bab5f68fa803b581504f">USTRINGTRIE_INTERMEDIATE_VALUE</a></div><div class="ttdoc">The input unit(s) continued a matching string and there is a value for the string so far...</div><div class="ttdef"><b>Definition:</b> <a href="ustringtrie_8h_source.html#l00066">ustringtrie.h:66</a></div></div> <div class="ttc" id="umachine_8h_html_a26a7bac63d90ef61175acb9f6fc4f2ca"><div class="ttname"><a href="umachine_8h.html#a26a7bac63d90ef61175acb9f6fc4f2ca">UINT64_C</a></div><div class="ttdeci">#define UINT64_C(c)</div><div class="ttdoc">Provides a platform independent way to specify an unsigned 64-bit integer constant. </div><div class="ttdef"><b>Definition:</b> <a href="umachine_8h_source.html#l00241">umachine.h:241</a></div></div> <div class="ttc" id="classicu_1_1StringPiece_html"><div class="ttname"><a href="classicu_1_1StringPiece.html">icu::StringPiece</a></div><div class="ttdoc">A string-like object that points to a sized piece of memory. </div><div class="ttdef"><b>Definition:</b> <a href="stringpiece_8h_source.html#l00061">stringpiece.h:61</a></div></div> <div class="ttc" id="classicu_1_1BytesTrie_html_a460aed45ae9c2859f084d2e9b1418bd4"><div class="ttname"><a href="classicu_1_1BytesTrie.html#a460aed45ae9c2859f084d2e9b1418bd4">icu::BytesTrie::resetToState</a></div><div class="ttdeci">BytesTrie & resetToState(const State &state)</div><div class="ttdoc">Resets this trie to the saved state. </div><div class="ttdef"><b>Definition:</b> <a href="bytestrie_8h_source.html#l00179">bytestrie.h:179</a></div></div> <div class="ttc" id="classicu_1_1UMemory_html"><div class="ttname"><a href="classicu_1_1UMemory.html">icu::UMemory</a></div><div class="ttdoc">UMemory is the common ICU base class. </div><div class="ttdef"><b>Definition:</b> <a href="uobject_8h_source.html#l00115">uobject.h:115</a></div></div> <div class="ttc" id="umachine_8h_html_a349ef00011f20ccd1d3b424445681aa5"><div class="ttname"><a href="umachine_8h.html#a349ef00011f20ccd1d3b424445681aa5">UBool</a></div><div class="ttdeci">int8_t UBool</div><div class="ttdoc">The ICU boolean type, a signed-byte integer. </div><div class="ttdef"><b>Definition:</b> <a href="umachine_8h_source.html#l00269">umachine.h:269</a></div></div> </div><!-- fragment --></div><!-- contents --> <!-- start footer part --> <hr class="footer"/><address class="footer"><small> Generated by  <a href="http://www.doxygen.org/index.html"> <img class="footer" src="doxygen.png" alt="doxygen"/> </a> 1.8.14 </small></address> </body> </html>

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