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70<div class="title">utf.hpp</div> </div>
71</div><!--header-->
72<div class="contents">
73<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="comment">//</span></div>
74<div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160;<span class="comment">// Copyright (c) 2009-2011 Artyom Beilis (Tonkikh)</span></div>
75<div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;<span class="comment">//</span></div>
76<div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160;<span class="comment">// Distributed under the Boost Software License, Version 1.0. (See</span></div>
77<div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160;<span class="comment">// accompanying file LICENSE_1_0.txt or copy at</span></div>
78<div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160;<span class="comment">// http://www.boost.org/LICENSE_1_0.txt)</span></div>
79<div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160;<span class="comment">//</span></div>
80<div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;<span class="preprocessor">#ifndef BOOST_LOCALE_UTF_HPP_INCLUDED</span></div>
81<div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#define BOOST_LOCALE_UTF_HPP_INCLUDED</span></div>
82<div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;<span class="preprocessor"></span></div>
83<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<span class="preprocessor">#include &lt;boost/cstdint.hpp&gt;</span></div>
84<div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;</div>
85<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;<span class="keyword">namespace </span>boost {</div>
86<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;<span class="keyword">namespace </span>locale {</div>
87<div class="line"><a name="l00020"></a><span class="lineno"><a class="line" href="namespaceboost_1_1locale_1_1utf.html"> 20</a></span>&#160;<span class="keyword">namespace </span>utf {</div>
88<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160;<span class="preprocessor"> #ifdef __GNUC__</span></div>
89<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160;<span class="preprocessor"></span><span class="preprocessor"> # define BOOST_LOCALE_LIKELY(x) __builtin_expect((x),1)</span></div>
90<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160;<span class="preprocessor"></span><span class="preprocessor"> # define BOOST_LOCALE_UNLIKELY(x) __builtin_expect((x),0)</span></div>
91<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160;<span class="preprocessor"></span><span class="preprocessor"> #else</span></div>
92<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160;<span class="preprocessor"></span><span class="preprocessor"> # define BOOST_LOCALE_LIKELY(x) (x)</span></div>
93<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160;<span class="preprocessor"></span><span class="preprocessor"> # define BOOST_LOCALE_UNLIKELY(x) (x)</span></div>
94<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160;<span class="preprocessor"></span><span class="preprocessor"> #endif</span></div>
95<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160;<span class="preprocessor"></span></div>
96<div class="line"><a name="l00034"></a><span class="lineno"><a class="line" href="namespaceboost_1_1locale_1_1utf.html#a068111a6b9d6d465a63893ed5c05e2f8"> 34</a></span>&#160; <span class="keyword">typedef</span> uint32_t <a class="code" href="namespaceboost_1_1locale_1_1utf.html#a068111a6b9d6d465a63893ed5c05e2f8">code_point</a>;</div>
97<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160;</div>
98<div class="line"><a name="l00039"></a><span class="lineno"><a class="line" href="namespaceboost_1_1locale_1_1utf.html#a30010000878c7732340bda8956b844fb"> 39</a></span>&#160; <span class="keyword">static</span> <span class="keyword">const</span> <a class="code" href="namespaceboost_1_1locale_1_1utf.html#a068111a6b9d6d465a63893ed5c05e2f8">code_point</a> <a class="code" href="namespaceboost_1_1locale_1_1utf.html#a30010000878c7732340bda8956b844fb">illegal</a> = 0xFFFFFFFFu;</div>
99<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160;</div>
100<div class="line"><a name="l00044"></a><span class="lineno"><a class="line" href="namespaceboost_1_1locale_1_1utf.html#a20dbe458fd18229a0e6c09888d031b38"> 44</a></span>&#160; <span class="keyword">static</span> <span class="keyword">const</span> <a class="code" href="namespaceboost_1_1locale_1_1utf.html#a068111a6b9d6d465a63893ed5c05e2f8">code_point</a> <a class="code" href="namespaceboost_1_1locale_1_1utf.html#a20dbe458fd18229a0e6c09888d031b38">incomplete</a> = 0xFFFFFFFEu;</div>
101<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160;</div>
102<div class="line"><a name="l00049"></a><span class="lineno"><a class="line" href="namespaceboost_1_1locale_1_1utf.html#a189805c4e9f4c033ce5f88daf780e08e"> 49</a></span>&#160; <span class="keyword">inline</span> <span class="keywordtype">bool</span> <a class="code" href="namespaceboost_1_1locale_1_1utf.html#a189805c4e9f4c033ce5f88daf780e08e">is_valid_codepoint</a>(<a class="code" href="namespaceboost_1_1locale_1_1utf.html#a068111a6b9d6d465a63893ed5c05e2f8">code_point</a> v)</div>
103<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160; {</div>
104<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160; <span class="keywordflow">if</span>(v&gt;0x10FFFF)</div>
105<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
106<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160; <span class="keywordflow">if</span>(0xD800 &lt;=v &amp;&amp; v&lt;= 0xDFFF) <span class="comment">// surragates</span></div>
107<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
108<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160; <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
109<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160; }</div>
110<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160;</div>
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112<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160;<span class="preprocessor"></span> <span class="keyword">template</span>&lt;<span class="keyword">typename</span> CharType,<span class="keywordtype">int</span> size=sizeof(CharType)&gt;</div>
113<div class="line"><a name="l00063"></a><span class="lineno"><a class="line" href="structboost_1_1locale_1_1utf_1_1utf__traits.html"> 63</a></span>&#160; <span class="keyword">struct </span><a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html">utf_traits</a> {</div>
114<div class="line"><a name="l00067"></a><span class="lineno"><a class="line" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#accca9dc2d8fe018b9b5640c48e3470e4"> 67</a></span>&#160; <span class="keyword">typedef</span> CharType <a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#accca9dc2d8fe018b9b5640c48e3470e4">char_type</a>;</div>
115<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">typename</span> Iterator&gt;</div>
116<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160; <span class="keyword">static</span> <a class="code" href="namespaceboost_1_1locale_1_1utf.html#a068111a6b9d6d465a63893ed5c05e2f8">code_point</a> <a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#a9b6b01fa6705ba67ac78359ddee03213">decode</a>(Iterator &amp;p,Iterator e);</div>
117<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160;</div>
118<div class="line"><a name="l00092"></a><span class="lineno"><a class="line" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#abb4cb63a924d19505c2cb6e930c68a13"> 92</a></span>&#160; <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#abb4cb63a924d19505c2cb6e930c68a13">max_width</a>;</div>
119<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160; <span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#a26c106ec8816f48431f882017ab46763">width</a>(<a class="code" href="namespaceboost_1_1locale_1_1utf.html#a068111a6b9d6d465a63893ed5c05e2f8">code_point</a> value);</div>
120<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160;</div>
121<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160; <span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#a8a6b72ba87a817652f522018df51a9a7">trail_length</a>(<a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#accca9dc2d8fe018b9b5640c48e3470e4">char_type</a> c);</div>
122<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160; <span class="keyword">static</span> <span class="keywordtype">bool</span> <a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#ae2cb78fcb8a58bed3e0ce1d6528a719a">is_trail</a>(<a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#accca9dc2d8fe018b9b5640c48e3470e4">char_type</a> c);</div>
123<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>&#160; <span class="keyword">static</span> <span class="keywordtype">bool</span> <a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#a19789c4c26c8d9f576de5272f3d41a11">is_lead</a>(<a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#accca9dc2d8fe018b9b5640c48e3470e4">char_type</a> c);</div>
124<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>&#160;</div>
125<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">typename</span> Iterator&gt;</div>
126<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>&#160; <span class="keyword">static</span> Iterator <a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#acd59f628af084f800f8a86cdd8124fd8">encode</a>(<a class="code" href="namespaceboost_1_1locale_1_1utf.html#a068111a6b9d6d465a63893ed5c05e2f8">code_point</a> value,Iterator out);</div>
127<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">typename</span> Iterator&gt;</div>
128<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>&#160; <span class="keyword">static</span> <a class="code" href="namespaceboost_1_1locale_1_1utf.html#a068111a6b9d6d465a63893ed5c05e2f8">code_point</a> <a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#a8ff625b2c19b0d4132f7ec9e6303cb36">decode_valid</a>(Iterator &amp;p);</div>
129<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>&#160; };</div>
130<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>&#160; </div>
131<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>&#160;<span class="preprocessor"> #else</span></div>
132<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>&#160;<span class="preprocessor"></span></div>
133<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">typename</span> CharType,<span class="keywordtype">int</span> size=sizeof(CharType)&gt;</div>
134<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>&#160; <span class="keyword">struct </span><a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html">utf_traits</a>;</div>
135<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>&#160;</div>
136<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">typename</span> CharType&gt;</div>
137<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>&#160; <span class="keyword">struct </span><a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html">utf_traits</a>&lt;CharType,1&gt; {</div>
138<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>&#160;</div>
139<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>&#160; <span class="keyword">typedef</span> CharType <a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#accca9dc2d8fe018b9b5640c48e3470e4">char_type</a>;</div>
140<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>&#160; </div>
141<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>&#160; <span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#a8a6b72ba87a817652f522018df51a9a7">trail_length</a>(<a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#accca9dc2d8fe018b9b5640c48e3470e4">char_type</a> ci) </div>
142<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>&#160; {</div>
143<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>&#160; <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> c = ci;</div>
144<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>&#160; <span class="keywordflow">if</span>(c &lt; 128)</div>
145<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>&#160; <span class="keywordflow">return</span> 0;</div>
146<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>&#160; <span class="keywordflow">if</span>(BOOST_LOCALE_UNLIKELY(c &lt; 194))</div>
147<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>&#160; <span class="keywordflow">return</span> -1;</div>
148<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>&#160; <span class="keywordflow">if</span>(c &lt; 224)</div>
149<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>&#160; <span class="keywordflow">return</span> 1;</div>
150<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>&#160; <span class="keywordflow">if</span>(c &lt; 240)</div>
151<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>&#160; <span class="keywordflow">return</span> 2;</div>
152<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>&#160; <span class="keywordflow">if</span>(BOOST_LOCALE_LIKELY(c &lt;=244))</div>
153<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>&#160; <span class="keywordflow">return</span> 3;</div>
154<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>&#160; <span class="keywordflow">return</span> -1;</div>
155<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>&#160; }</div>
156<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>&#160; </div>
157<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>&#160; <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#abb4cb63a924d19505c2cb6e930c68a13">max_width</a> = 4;</div>
158<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>&#160;</div>
159<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>&#160; <span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#a26c106ec8816f48431f882017ab46763">width</a>(<a class="code" href="namespaceboost_1_1locale_1_1utf.html#a068111a6b9d6d465a63893ed5c05e2f8">code_point</a> value)</div>
160<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>&#160; {</div>
161<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>&#160; <span class="keywordflow">if</span>(value &lt;=0x7F) {</div>
162<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>&#160; <span class="keywordflow">return</span> 1;</div>
163<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>&#160; }</div>
164<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>&#160; <span class="keywordflow">else</span> <span class="keywordflow">if</span>(value &lt;=0x7FF) {</div>
165<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>&#160; <span class="keywordflow">return</span> 2;</div>
166<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>&#160; }</div>
167<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>&#160; <span class="keywordflow">else</span> <span class="keywordflow">if</span>(BOOST_LOCALE_LIKELY(value &lt;=0xFFFF)) {</div>
168<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>&#160; <span class="keywordflow">return</span> 3;</div>
169<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>&#160; }</div>
170<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>&#160; <span class="keywordflow">else</span> {</div>
171<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>&#160; <span class="keywordflow">return</span> 4;</div>
172<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>&#160; }</div>
173<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>&#160; }</div>
174<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>&#160;</div>
175<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>&#160; <span class="keyword">static</span> <span class="keywordtype">bool</span> <a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#ae2cb78fcb8a58bed3e0ce1d6528a719a">is_trail</a>(<a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#accca9dc2d8fe018b9b5640c48e3470e4">char_type</a> ci)</div>
176<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>&#160; {</div>
177<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>&#160; <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> c=ci;</div>
178<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>&#160; <span class="keywordflow">return</span> (c &amp; 0xC0)==0x80;</div>
179<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>&#160; }</div>
180<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>&#160;</div>
181<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>&#160; <span class="keyword">static</span> <span class="keywordtype">bool</span> <a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#a19789c4c26c8d9f576de5272f3d41a11">is_lead</a>(<a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#accca9dc2d8fe018b9b5640c48e3470e4">char_type</a> ci)</div>
182<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>&#160; {</div>
183<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>&#160; <span class="keywordflow">return</span> !<a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#ae2cb78fcb8a58bed3e0ce1d6528a719a">is_trail</a>(ci);</div>
184<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>&#160; }</div>
185<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>&#160; </div>
186<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">typename</span> Iterator&gt;</div>
187<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>&#160; <span class="keyword">static</span> <a class="code" href="namespaceboost_1_1locale_1_1utf.html#a068111a6b9d6d465a63893ed5c05e2f8">code_point</a> <a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#a9b6b01fa6705ba67ac78359ddee03213">decode</a>(Iterator &amp;p,Iterator e)</div>
188<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>&#160; {</div>
189<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>&#160; <span class="keywordflow">if</span>(BOOST_LOCALE_UNLIKELY(p==e))</div>
190<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>&#160; <span class="keywordflow">return</span> <a class="code" href="namespaceboost_1_1locale_1_1utf.html#a20dbe458fd18229a0e6c09888d031b38">incomplete</a>;</div>
191<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>&#160;</div>
192<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>&#160; <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> lead = *p++;</div>
193<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>&#160;</div>
194<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>&#160; <span class="comment">// First byte is fully validated here</span></div>
195<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>&#160; <span class="keywordtype">int</span> trail_size = <a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#a8a6b72ba87a817652f522018df51a9a7">trail_length</a>(lead);</div>
196<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>&#160;</div>
197<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>&#160; <span class="keywordflow">if</span>(BOOST_LOCALE_UNLIKELY(trail_size &lt; 0))</div>
198<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>&#160; <span class="keywordflow">return</span> <a class="code" href="namespaceboost_1_1locale_1_1utf.html#a30010000878c7732340bda8956b844fb">illegal</a>;</div>
199<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>&#160;</div>
200<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>&#160; <span class="comment">//</span></div>
201<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>&#160; <span class="comment">// Ok as only ASCII may be of size = 0</span></div>
202<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>&#160; <span class="comment">// also optimize for ASCII text</span></div>
203<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>&#160; <span class="comment">//</span></div>
204<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>&#160; <span class="keywordflow">if</span>(trail_size == 0)</div>
205<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>&#160; <span class="keywordflow">return</span> lead;</div>
206<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>&#160; </div>
207<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>&#160; <a class="code" href="namespaceboost_1_1locale_1_1utf.html#a068111a6b9d6d465a63893ed5c05e2f8">code_point</a> c = lead &amp; ((1&lt;&lt;(6-trail_size))-1);</div>
208<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>&#160;</div>
209<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>&#160; <span class="comment">// Read the rest</span></div>
210<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>&#160; <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> tmp;</div>
211<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>&#160; <span class="keywordflow">switch</span>(trail_size) {</div>
212<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>&#160; <span class="keywordflow">case</span> 3:</div>
213<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>&#160; <span class="keywordflow">if</span>(BOOST_LOCALE_UNLIKELY(p==e))</div>
214<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>&#160; <span class="keywordflow">return</span> <a class="code" href="namespaceboost_1_1locale_1_1utf.html#a20dbe458fd18229a0e6c09888d031b38">incomplete</a>;</div>
215<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>&#160; tmp = *p++;</div>
216<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>&#160; <span class="keywordflow">if</span> (!<a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#ae2cb78fcb8a58bed3e0ce1d6528a719a">is_trail</a>(tmp))</div>
217<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>&#160; <span class="keywordflow">return</span> <a class="code" href="namespaceboost_1_1locale_1_1utf.html#a30010000878c7732340bda8956b844fb">illegal</a>;</div>
218<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>&#160; c = (c &lt;&lt; 6) | ( tmp &amp; 0x3F);</div>
219<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>&#160; <span class="keywordflow">case</span> 2:</div>
220<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>&#160; <span class="keywordflow">if</span>(BOOST_LOCALE_UNLIKELY(p==e))</div>
221<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>&#160; <span class="keywordflow">return</span> <a class="code" href="namespaceboost_1_1locale_1_1utf.html#a20dbe458fd18229a0e6c09888d031b38">incomplete</a>;</div>
222<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>&#160; tmp = *p++;</div>
223<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>&#160; <span class="keywordflow">if</span> (!<a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#ae2cb78fcb8a58bed3e0ce1d6528a719a">is_trail</a>(tmp))</div>
224<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>&#160; <span class="keywordflow">return</span> <a class="code" href="namespaceboost_1_1locale_1_1utf.html#a30010000878c7732340bda8956b844fb">illegal</a>;</div>
225<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>&#160; c = (c &lt;&lt; 6) | ( tmp &amp; 0x3F);</div>
226<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>&#160; <span class="keywordflow">case</span> 1:</div>
227<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>&#160; <span class="keywordflow">if</span>(BOOST_LOCALE_UNLIKELY(p==e))</div>
228<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>&#160; <span class="keywordflow">return</span> <a class="code" href="namespaceboost_1_1locale_1_1utf.html#a20dbe458fd18229a0e6c09888d031b38">incomplete</a>;</div>
229<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>&#160; tmp = *p++;</div>
230<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>&#160; <span class="keywordflow">if</span> (!<a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#ae2cb78fcb8a58bed3e0ce1d6528a719a">is_trail</a>(tmp))</div>
231<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>&#160; <span class="keywordflow">return</span> <a class="code" href="namespaceboost_1_1locale_1_1utf.html#a30010000878c7732340bda8956b844fb">illegal</a>;</div>
232<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>&#160; c = (c &lt;&lt; 6) | ( tmp &amp; 0x3F);</div>
233<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>&#160; }</div>
234<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>&#160;</div>
235<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>&#160; <span class="comment">// Check code point validity: no surrogates and</span></div>
236<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>&#160; <span class="comment">// valid range</span></div>
237<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>&#160; <span class="keywordflow">if</span>(BOOST_LOCALE_UNLIKELY(!<a class="code" href="namespaceboost_1_1locale_1_1utf.html#a189805c4e9f4c033ce5f88daf780e08e">is_valid_codepoint</a>(c)))</div>
238<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>&#160; <span class="keywordflow">return</span> <a class="code" href="namespaceboost_1_1locale_1_1utf.html#a30010000878c7732340bda8956b844fb">illegal</a>;</div>
239<div class="line"><a name="l00245"></a><span class="lineno"> 245</span>&#160;</div>
240<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>&#160; <span class="comment">// make sure it is the most compact representation</span></div>
241<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>&#160; <span class="keywordflow">if</span>(BOOST_LOCALE_UNLIKELY(<a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#a26c106ec8816f48431f882017ab46763">width</a>(c)!=trail_size + 1))</div>
242<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>&#160; <span class="keywordflow">return</span> <a class="code" href="namespaceboost_1_1locale_1_1utf.html#a30010000878c7732340bda8956b844fb">illegal</a>;</div>
243<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>&#160;</div>
244<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>&#160; <span class="keywordflow">return</span> c;</div>
245<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>&#160;</div>
246<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>&#160; }</div>
247<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>&#160; </div>
248<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">typename</span> Iterator&gt;</div>
249<div class="line"><a name="l00255"></a><span class="lineno"> 255</span>&#160; <span class="keyword">static</span> <a class="code" href="namespaceboost_1_1locale_1_1utf.html#a068111a6b9d6d465a63893ed5c05e2f8">code_point</a> <a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#a8ff625b2c19b0d4132f7ec9e6303cb36">decode_valid</a>(Iterator &amp;p)</div>
250<div class="line"><a name="l00256"></a><span class="lineno"> 256</span>&#160; {</div>
251<div class="line"><a name="l00257"></a><span class="lineno"> 257</span>&#160; <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> lead = *p++;</div>
252<div class="line"><a name="l00258"></a><span class="lineno"> 258</span>&#160; <span class="keywordflow">if</span>(lead &lt; 192)</div>
253<div class="line"><a name="l00259"></a><span class="lineno"> 259</span>&#160; <span class="keywordflow">return</span> lead;</div>
254<div class="line"><a name="l00260"></a><span class="lineno"> 260</span>&#160;</div>
255<div class="line"><a name="l00261"></a><span class="lineno"> 261</span>&#160; <span class="keywordtype">int</span> trail_size;</div>
256<div class="line"><a name="l00262"></a><span class="lineno"> 262</span>&#160;</div>
257<div class="line"><a name="l00263"></a><span class="lineno"> 263</span>&#160; <span class="keywordflow">if</span>(lead &lt; 224)</div>
258<div class="line"><a name="l00264"></a><span class="lineno"> 264</span>&#160; trail_size = 1;</div>
259<div class="line"><a name="l00265"></a><span class="lineno"> 265</span>&#160; <span class="keywordflow">else</span> <span class="keywordflow">if</span>(BOOST_LOCALE_LIKELY(lead &lt; 240)) <span class="comment">// non-BMP rare</span></div>
260<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>&#160; trail_size = 2;</div>
261<div class="line"><a name="l00267"></a><span class="lineno"> 267</span>&#160; <span class="keywordflow">else</span></div>
262<div class="line"><a name="l00268"></a><span class="lineno"> 268</span>&#160; trail_size = 3;</div>
263<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>&#160; </div>
264<div class="line"><a name="l00270"></a><span class="lineno"> 270</span>&#160; <a class="code" href="namespaceboost_1_1locale_1_1utf.html#a068111a6b9d6d465a63893ed5c05e2f8">code_point</a> c = lead &amp; ((1&lt;&lt;(6-trail_size))-1);</div>
265<div class="line"><a name="l00271"></a><span class="lineno"> 271</span>&#160;</div>
266<div class="line"><a name="l00272"></a><span class="lineno"> 272</span>&#160; <span class="keywordflow">switch</span>(trail_size) {</div>
267<div class="line"><a name="l00273"></a><span class="lineno"> 273</span>&#160; <span class="keywordflow">case</span> 3:</div>
268<div class="line"><a name="l00274"></a><span class="lineno"> 274</span>&#160; c = (c &lt;&lt; 6) | ( static_cast&lt;unsigned char&gt;(*p++) &amp; 0x3F);</div>
269<div class="line"><a name="l00275"></a><span class="lineno"> 275</span>&#160; <span class="keywordflow">case</span> 2:</div>
270<div class="line"><a name="l00276"></a><span class="lineno"> 276</span>&#160; c = (c &lt;&lt; 6) | ( static_cast&lt;unsigned char&gt;(*p++) &amp; 0x3F);</div>
271<div class="line"><a name="l00277"></a><span class="lineno"> 277</span>&#160; <span class="keywordflow">case</span> 1:</div>
272<div class="line"><a name="l00278"></a><span class="lineno"> 278</span>&#160; c = (c &lt;&lt; 6) | ( static_cast&lt;unsigned char&gt;(*p++) &amp; 0x3F);</div>
273<div class="line"><a name="l00279"></a><span class="lineno"> 279</span>&#160; }</div>
274<div class="line"><a name="l00280"></a><span class="lineno"> 280</span>&#160;</div>
275<div class="line"><a name="l00281"></a><span class="lineno"> 281</span>&#160; <span class="keywordflow">return</span> c;</div>
276<div class="line"><a name="l00282"></a><span class="lineno"> 282</span>&#160; }</div>
277<div class="line"><a name="l00283"></a><span class="lineno"> 283</span>&#160;</div>
278<div class="line"><a name="l00284"></a><span class="lineno"> 284</span>&#160;</div>
279<div class="line"><a name="l00285"></a><span class="lineno"> 285</span>&#160;</div>
280<div class="line"><a name="l00286"></a><span class="lineno"> 286</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">typename</span> Iterator&gt;</div>
281<div class="line"><a name="l00287"></a><span class="lineno"> 287</span>&#160; <span class="keyword">static</span> Iterator <a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#acd59f628af084f800f8a86cdd8124fd8">encode</a>(<a class="code" href="namespaceboost_1_1locale_1_1utf.html#a068111a6b9d6d465a63893ed5c05e2f8">code_point</a> value,Iterator out)</div>
282<div class="line"><a name="l00288"></a><span class="lineno"> 288</span>&#160; {</div>
283<div class="line"><a name="l00289"></a><span class="lineno"> 289</span>&#160; <span class="keywordflow">if</span>(value &lt;= 0x7F) {</div>
284<div class="line"><a name="l00290"></a><span class="lineno"> 290</span>&#160; *out++ = <span class="keyword">static_cast&lt;</span><a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#accca9dc2d8fe018b9b5640c48e3470e4">char_type</a><span class="keyword">&gt;</span>(value);</div>
285<div class="line"><a name="l00291"></a><span class="lineno"> 291</span>&#160; }</div>
286<div class="line"><a name="l00292"></a><span class="lineno"> 292</span>&#160; <span class="keywordflow">else</span> <span class="keywordflow">if</span>(value &lt;= 0x7FF) {</div>
287<div class="line"><a name="l00293"></a><span class="lineno"> 293</span>&#160; *out++ = <span class="keyword">static_cast&lt;</span><a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#accca9dc2d8fe018b9b5640c48e3470e4">char_type</a><span class="keyword">&gt;</span>((value &gt;&gt; 6) | 0xC0);</div>
288<div class="line"><a name="l00294"></a><span class="lineno"> 294</span>&#160; *out++ = <span class="keyword">static_cast&lt;</span><a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#accca9dc2d8fe018b9b5640c48e3470e4">char_type</a><span class="keyword">&gt;</span>((value &amp; 0x3F) | 0x80);</div>
289<div class="line"><a name="l00295"></a><span class="lineno"> 295</span>&#160; }</div>
290<div class="line"><a name="l00296"></a><span class="lineno"> 296</span>&#160; <span class="keywordflow">else</span> <span class="keywordflow">if</span>(BOOST_LOCALE_LIKELY(value &lt;= 0xFFFF)) {</div>
291<div class="line"><a name="l00297"></a><span class="lineno"> 297</span>&#160; *out++ = <span class="keyword">static_cast&lt;</span><a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#accca9dc2d8fe018b9b5640c48e3470e4">char_type</a><span class="keyword">&gt;</span>((value &gt;&gt; 12) | 0xE0);</div>
292<div class="line"><a name="l00298"></a><span class="lineno"> 298</span>&#160; *out++ = <span class="keyword">static_cast&lt;</span><a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#accca9dc2d8fe018b9b5640c48e3470e4">char_type</a><span class="keyword">&gt;</span>(((value &gt;&gt; 6) &amp; 0x3F) | 0x80);</div>
293<div class="line"><a name="l00299"></a><span class="lineno"> 299</span>&#160; *out++ = <span class="keyword">static_cast&lt;</span><a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#accca9dc2d8fe018b9b5640c48e3470e4">char_type</a><span class="keyword">&gt;</span>((value &amp; 0x3F) | 0x80);</div>
294<div class="line"><a name="l00300"></a><span class="lineno"> 300</span>&#160; }</div>
295<div class="line"><a name="l00301"></a><span class="lineno"> 301</span>&#160; <span class="keywordflow">else</span> {</div>
296<div class="line"><a name="l00302"></a><span class="lineno"> 302</span>&#160; *out++ = <span class="keyword">static_cast&lt;</span><a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#accca9dc2d8fe018b9b5640c48e3470e4">char_type</a><span class="keyword">&gt;</span>((value &gt;&gt; 18) | 0xF0);</div>
297<div class="line"><a name="l00303"></a><span class="lineno"> 303</span>&#160; *out++ = <span class="keyword">static_cast&lt;</span><a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#accca9dc2d8fe018b9b5640c48e3470e4">char_type</a><span class="keyword">&gt;</span>(((value &gt;&gt; 12) &amp; 0x3F) | 0x80);</div>
298<div class="line"><a name="l00304"></a><span class="lineno"> 304</span>&#160; *out++ = <span class="keyword">static_cast&lt;</span><a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#accca9dc2d8fe018b9b5640c48e3470e4">char_type</a><span class="keyword">&gt;</span>(((value &gt;&gt; 6) &amp; 0x3F) | 0x80);</div>
299<div class="line"><a name="l00305"></a><span class="lineno"> 305</span>&#160; *out++ = <span class="keyword">static_cast&lt;</span><a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#accca9dc2d8fe018b9b5640c48e3470e4">char_type</a><span class="keyword">&gt;</span>((value &amp; 0x3F) | 0x80);</div>
300<div class="line"><a name="l00306"></a><span class="lineno"> 306</span>&#160; }</div>
301<div class="line"><a name="l00307"></a><span class="lineno"> 307</span>&#160; <span class="keywordflow">return</span> out;</div>
302<div class="line"><a name="l00308"></a><span class="lineno"> 308</span>&#160; }</div>
303<div class="line"><a name="l00309"></a><span class="lineno"> 309</span>&#160; }; <span class="comment">// utf8</span></div>
304<div class="line"><a name="l00310"></a><span class="lineno"> 310</span>&#160;</div>
305<div class="line"><a name="l00311"></a><span class="lineno"> 311</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">typename</span> CharType&gt;</div>
306<div class="line"><a name="l00312"></a><span class="lineno"> 312</span>&#160; <span class="keyword">struct </span>utf_traits&lt;CharType,2&gt; {</div>
307<div class="line"><a name="l00313"></a><span class="lineno"> 313</span>&#160; <span class="keyword">typedef</span> CharType <a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#accca9dc2d8fe018b9b5640c48e3470e4">char_type</a>;</div>
308<div class="line"><a name="l00314"></a><span class="lineno"> 314</span>&#160;</div>
309<div class="line"><a name="l00315"></a><span class="lineno"> 315</span>&#160; <span class="comment">// See RFC 2781</span></div>
310<div class="line"><a name="l00316"></a><span class="lineno"> 316</span>&#160; <span class="keyword">static</span> <span class="keywordtype">bool</span> is_first_surrogate(uint16_t x)</div>
311<div class="line"><a name="l00317"></a><span class="lineno"> 317</span>&#160; {</div>
312<div class="line"><a name="l00318"></a><span class="lineno"> 318</span>&#160; <span class="keywordflow">return</span> 0xD800 &lt;=x &amp;&amp; x&lt;= 0xDBFF;</div>
313<div class="line"><a name="l00319"></a><span class="lineno"> 319</span>&#160; }</div>
314<div class="line"><a name="l00320"></a><span class="lineno"> 320</span>&#160; <span class="keyword">static</span> <span class="keywordtype">bool</span> is_second_surrogate(uint16_t x)</div>
315<div class="line"><a name="l00321"></a><span class="lineno"> 321</span>&#160; {</div>
316<div class="line"><a name="l00322"></a><span class="lineno"> 322</span>&#160; <span class="keywordflow">return</span> 0xDC00 &lt;=x &amp;&amp; x&lt;= 0xDFFF;</div>
317<div class="line"><a name="l00323"></a><span class="lineno"> 323</span>&#160; }</div>
318<div class="line"><a name="l00324"></a><span class="lineno"> 324</span>&#160; <span class="keyword">static</span> <a class="code" href="namespaceboost_1_1locale_1_1utf.html#a068111a6b9d6d465a63893ed5c05e2f8">code_point</a> combine_surrogate(uint16_t w1,uint16_t w2)</div>
319<div class="line"><a name="l00325"></a><span class="lineno"> 325</span>&#160; {</div>
320<div class="line"><a name="l00326"></a><span class="lineno"> 326</span>&#160; <span class="keywordflow">return</span> ((<a class="code" href="namespaceboost_1_1locale_1_1utf.html#a068111a6b9d6d465a63893ed5c05e2f8">code_point</a>(w1 &amp; 0x3FF) &lt;&lt; 10) | (w2 &amp; 0x3FF)) + 0x10000;</div>
321<div class="line"><a name="l00327"></a><span class="lineno"> 327</span>&#160; }</div>
322<div class="line"><a name="l00328"></a><span class="lineno"> 328</span>&#160; <span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#a8a6b72ba87a817652f522018df51a9a7">trail_length</a>(<a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#accca9dc2d8fe018b9b5640c48e3470e4">char_type</a> c)</div>
323<div class="line"><a name="l00329"></a><span class="lineno"> 329</span>&#160; {</div>
324<div class="line"><a name="l00330"></a><span class="lineno"> 330</span>&#160; <span class="keywordflow">if</span>(is_first_surrogate(c))</div>
325<div class="line"><a name="l00331"></a><span class="lineno"> 331</span>&#160; <span class="keywordflow">return</span> 1;</div>
326<div class="line"><a name="l00332"></a><span class="lineno"> 332</span>&#160; <span class="keywordflow">if</span>(is_second_surrogate(c))</div>
327<div class="line"><a name="l00333"></a><span class="lineno"> 333</span>&#160; <span class="keywordflow">return</span> -1;</div>
328<div class="line"><a name="l00334"></a><span class="lineno"> 334</span>&#160; <span class="keywordflow">return</span> 0;</div>
329<div class="line"><a name="l00335"></a><span class="lineno"> 335</span>&#160; }</div>
330<div class="line"><a name="l00339"></a><span class="lineno"> 339</span>&#160; <span class="keyword">static</span> <span class="keywordtype">bool</span> <a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#ae2cb78fcb8a58bed3e0ce1d6528a719a">is_trail</a>(<a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#accca9dc2d8fe018b9b5640c48e3470e4">char_type</a> c)</div>
331<div class="line"><a name="l00340"></a><span class="lineno"> 340</span>&#160; {</div>
332<div class="line"><a name="l00341"></a><span class="lineno"> 341</span>&#160; <span class="keywordflow">return</span> is_second_surrogate(c);</div>
333<div class="line"><a name="l00342"></a><span class="lineno"> 342</span>&#160; }</div>
334<div class="line"><a name="l00346"></a><span class="lineno"> 346</span>&#160; <span class="keyword">static</span> <span class="keywordtype">bool</span> <a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#a19789c4c26c8d9f576de5272f3d41a11">is_lead</a>(<a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#accca9dc2d8fe018b9b5640c48e3470e4">char_type</a> c)</div>
335<div class="line"><a name="l00347"></a><span class="lineno"> 347</span>&#160; {</div>
336<div class="line"><a name="l00348"></a><span class="lineno"> 348</span>&#160; <span class="keywordflow">return</span> !is_second_surrogate(c);</div>
337<div class="line"><a name="l00349"></a><span class="lineno"> 349</span>&#160; }</div>
338<div class="line"><a name="l00350"></a><span class="lineno"> 350</span>&#160;</div>
339<div class="line"><a name="l00351"></a><span class="lineno"> 351</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">typename</span> It&gt;</div>
340<div class="line"><a name="l00352"></a><span class="lineno"> 352</span>&#160; <span class="keyword">static</span> <a class="code" href="namespaceboost_1_1locale_1_1utf.html#a068111a6b9d6d465a63893ed5c05e2f8">code_point</a> <a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#a9b6b01fa6705ba67ac78359ddee03213">decode</a>(It &amp;current,It last)</div>
341<div class="line"><a name="l00353"></a><span class="lineno"> 353</span>&#160; {</div>
342<div class="line"><a name="l00354"></a><span class="lineno"> 354</span>&#160; <span class="keywordflow">if</span>(BOOST_LOCALE_UNLIKELY(current == last))</div>
343<div class="line"><a name="l00355"></a><span class="lineno"> 355</span>&#160; <span class="keywordflow">return</span> <a class="code" href="namespaceboost_1_1locale_1_1utf.html#a20dbe458fd18229a0e6c09888d031b38">incomplete</a>;</div>
344<div class="line"><a name="l00356"></a><span class="lineno"> 356</span>&#160; uint16_t w1=*current++;</div>
345<div class="line"><a name="l00357"></a><span class="lineno"> 357</span>&#160; <span class="keywordflow">if</span>(BOOST_LOCALE_LIKELY(w1 &lt; 0xD800 || 0xDFFF &lt; w1)) {</div>
346<div class="line"><a name="l00358"></a><span class="lineno"> 358</span>&#160; <span class="keywordflow">return</span> w1;</div>
347<div class="line"><a name="l00359"></a><span class="lineno"> 359</span>&#160; }</div>
348<div class="line"><a name="l00360"></a><span class="lineno"> 360</span>&#160; <span class="keywordflow">if</span>(w1 &gt; 0xDBFF)</div>
349<div class="line"><a name="l00361"></a><span class="lineno"> 361</span>&#160; <span class="keywordflow">return</span> <a class="code" href="namespaceboost_1_1locale_1_1utf.html#a30010000878c7732340bda8956b844fb">illegal</a>;</div>
350<div class="line"><a name="l00362"></a><span class="lineno"> 362</span>&#160; <span class="keywordflow">if</span>(current==last)</div>
351<div class="line"><a name="l00363"></a><span class="lineno"> 363</span>&#160; <span class="keywordflow">return</span> <a class="code" href="namespaceboost_1_1locale_1_1utf.html#a20dbe458fd18229a0e6c09888d031b38">incomplete</a>;</div>
352<div class="line"><a name="l00364"></a><span class="lineno"> 364</span>&#160; uint16_t w2=*current++;</div>
353<div class="line"><a name="l00365"></a><span class="lineno"> 365</span>&#160; <span class="keywordflow">if</span>(w2 &lt; 0xDC00 || 0xDFFF &lt; w2)</div>
354<div class="line"><a name="l00366"></a><span class="lineno"> 366</span>&#160; <span class="keywordflow">return</span> <a class="code" href="namespaceboost_1_1locale_1_1utf.html#a30010000878c7732340bda8956b844fb">illegal</a>;</div>
355<div class="line"><a name="l00367"></a><span class="lineno"> 367</span>&#160; <span class="keywordflow">return</span> combine_surrogate(w1,w2);</div>
356<div class="line"><a name="l00368"></a><span class="lineno"> 368</span>&#160; }</div>
357<div class="line"><a name="l00369"></a><span class="lineno"> 369</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">typename</span> It&gt;</div>
358<div class="line"><a name="l00370"></a><span class="lineno"> 370</span>&#160; <span class="keyword">static</span> <a class="code" href="namespaceboost_1_1locale_1_1utf.html#a068111a6b9d6d465a63893ed5c05e2f8">code_point</a> <a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#a8ff625b2c19b0d4132f7ec9e6303cb36">decode_valid</a>(It &amp;current)</div>
359<div class="line"><a name="l00371"></a><span class="lineno"> 371</span>&#160; {</div>
360<div class="line"><a name="l00372"></a><span class="lineno"> 372</span>&#160; uint16_t w1=*current++;</div>
361<div class="line"><a name="l00373"></a><span class="lineno"> 373</span>&#160; <span class="keywordflow">if</span>(BOOST_LOCALE_LIKELY(w1 &lt; 0xD800 || 0xDFFF &lt; w1)) {</div>
362<div class="line"><a name="l00374"></a><span class="lineno"> 374</span>&#160; <span class="keywordflow">return</span> w1;</div>
363<div class="line"><a name="l00375"></a><span class="lineno"> 375</span>&#160; }</div>
364<div class="line"><a name="l00376"></a><span class="lineno"> 376</span>&#160; uint16_t w2=*current++;</div>
365<div class="line"><a name="l00377"></a><span class="lineno"> 377</span>&#160; <span class="keywordflow">return</span> combine_surrogate(w1,w2);</div>
366<div class="line"><a name="l00378"></a><span class="lineno"> 378</span>&#160; }</div>
367<div class="line"><a name="l00379"></a><span class="lineno"> 379</span>&#160;</div>
368<div class="line"><a name="l00380"></a><span class="lineno"> 380</span>&#160; <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#abb4cb63a924d19505c2cb6e930c68a13">max_width</a> = 2;</div>
369<div class="line"><a name="l00381"></a><span class="lineno"> 381</span>&#160; <span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#a26c106ec8816f48431f882017ab46763">width</a>(<a class="code" href="namespaceboost_1_1locale_1_1utf.html#a068111a6b9d6d465a63893ed5c05e2f8">code_point</a> u)</div>
370<div class="line"><a name="l00382"></a><span class="lineno"> 382</span>&#160; {</div>
371<div class="line"><a name="l00383"></a><span class="lineno"> 383</span>&#160; <span class="keywordflow">return</span> u&gt;=0x10000 ? 2 : 1;</div>
372<div class="line"><a name="l00384"></a><span class="lineno"> 384</span>&#160; }</div>
373<div class="line"><a name="l00385"></a><span class="lineno"> 385</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">typename</span> It&gt;</div>
374<div class="line"><a name="l00386"></a><span class="lineno"> 386</span>&#160; <span class="keyword">static</span> It <a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#acd59f628af084f800f8a86cdd8124fd8">encode</a>(<a class="code" href="namespaceboost_1_1locale_1_1utf.html#a068111a6b9d6d465a63893ed5c05e2f8">code_point</a> u,It out)</div>
375<div class="line"><a name="l00387"></a><span class="lineno"> 387</span>&#160; {</div>
376<div class="line"><a name="l00388"></a><span class="lineno"> 388</span>&#160; <span class="keywordflow">if</span>(BOOST_LOCALE_LIKELY(u&lt;=0xFFFF)) {</div>
377<div class="line"><a name="l00389"></a><span class="lineno"> 389</span>&#160; *out++ = <span class="keyword">static_cast&lt;</span><a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#accca9dc2d8fe018b9b5640c48e3470e4">char_type</a><span class="keyword">&gt;</span>(u);</div>
378<div class="line"><a name="l00390"></a><span class="lineno"> 390</span>&#160; }</div>
379<div class="line"><a name="l00391"></a><span class="lineno"> 391</span>&#160; <span class="keywordflow">else</span> {</div>
380<div class="line"><a name="l00392"></a><span class="lineno"> 392</span>&#160; u -= 0x10000;</div>
381<div class="line"><a name="l00393"></a><span class="lineno"> 393</span>&#160; *out++ = <span class="keyword">static_cast&lt;</span><a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#accca9dc2d8fe018b9b5640c48e3470e4">char_type</a><span class="keyword">&gt;</span>(0xD800 | (u&gt;&gt;10));</div>
382<div class="line"><a name="l00394"></a><span class="lineno"> 394</span>&#160; *out++ = <span class="keyword">static_cast&lt;</span><a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#accca9dc2d8fe018b9b5640c48e3470e4">char_type</a><span class="keyword">&gt;</span>(0xDC00 | (u &amp; 0x3FF));</div>
383<div class="line"><a name="l00395"></a><span class="lineno"> 395</span>&#160; }</div>
384<div class="line"><a name="l00396"></a><span class="lineno"> 396</span>&#160; <span class="keywordflow">return</span> out;</div>
385<div class="line"><a name="l00397"></a><span class="lineno"> 397</span>&#160; }</div>
386<div class="line"><a name="l00398"></a><span class="lineno"> 398</span>&#160; }; <span class="comment">// utf16;</span></div>
387<div class="line"><a name="l00399"></a><span class="lineno"> 399</span>&#160;</div>
388<div class="line"><a name="l00400"></a><span class="lineno"> 400</span>&#160; </div>
389<div class="line"><a name="l00401"></a><span class="lineno"> 401</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">typename</span> CharType&gt;</div>
390<div class="line"><a name="l00402"></a><span class="lineno"> 402</span>&#160; <span class="keyword">struct </span>utf_traits&lt;CharType,4&gt; {</div>
391<div class="line"><a name="l00403"></a><span class="lineno"> 403</span>&#160; <span class="keyword">typedef</span> CharType <a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#accca9dc2d8fe018b9b5640c48e3470e4">char_type</a>;</div>
392<div class="line"><a name="l00404"></a><span class="lineno"> 404</span>&#160; <span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#a8a6b72ba87a817652f522018df51a9a7">trail_length</a>(<a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#accca9dc2d8fe018b9b5640c48e3470e4">char_type</a> c)</div>
393<div class="line"><a name="l00405"></a><span class="lineno"> 405</span>&#160; {</div>
394<div class="line"><a name="l00406"></a><span class="lineno"> 406</span>&#160; <span class="keywordflow">if</span>(<a class="code" href="namespaceboost_1_1locale_1_1utf.html#a189805c4e9f4c033ce5f88daf780e08e">is_valid_codepoint</a>(c))</div>
395<div class="line"><a name="l00407"></a><span class="lineno"> 407</span>&#160; <span class="keywordflow">return</span> 0;</div>
396<div class="line"><a name="l00408"></a><span class="lineno"> 408</span>&#160; <span class="keywordflow">return</span> -1;</div>
397<div class="line"><a name="l00409"></a><span class="lineno"> 409</span>&#160; }</div>
398<div class="line"><a name="l00410"></a><span class="lineno"> 410</span>&#160; <span class="keyword">static</span> <span class="keywordtype">bool</span> <a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#ae2cb78fcb8a58bed3e0ce1d6528a719a">is_trail</a>(<a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#accca9dc2d8fe018b9b5640c48e3470e4">char_type</a> <span class="comment">/*c*/</span>)</div>
399<div class="line"><a name="l00411"></a><span class="lineno"> 411</span>&#160; {</div>
400<div class="line"><a name="l00412"></a><span class="lineno"> 412</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
401<div class="line"><a name="l00413"></a><span class="lineno"> 413</span>&#160; }</div>
402<div class="line"><a name="l00414"></a><span class="lineno"> 414</span>&#160; <span class="keyword">static</span> <span class="keywordtype">bool</span> <a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#a19789c4c26c8d9f576de5272f3d41a11">is_lead</a>(<a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#accca9dc2d8fe018b9b5640c48e3470e4">char_type</a> <span class="comment">/*c*/</span>)</div>
403<div class="line"><a name="l00415"></a><span class="lineno"> 415</span>&#160; {</div>
404<div class="line"><a name="l00416"></a><span class="lineno"> 416</span>&#160; <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
405<div class="line"><a name="l00417"></a><span class="lineno"> 417</span>&#160; }</div>
406<div class="line"><a name="l00418"></a><span class="lineno"> 418</span>&#160;</div>
407<div class="line"><a name="l00419"></a><span class="lineno"> 419</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">typename</span> It&gt;</div>
408<div class="line"><a name="l00420"></a><span class="lineno"> 420</span>&#160; <span class="keyword">static</span> <a class="code" href="namespaceboost_1_1locale_1_1utf.html#a068111a6b9d6d465a63893ed5c05e2f8">code_point</a> <a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#a8ff625b2c19b0d4132f7ec9e6303cb36">decode_valid</a>(It &amp;current)</div>
409<div class="line"><a name="l00421"></a><span class="lineno"> 421</span>&#160; {</div>
410<div class="line"><a name="l00422"></a><span class="lineno"> 422</span>&#160; <span class="keywordflow">return</span> *current++;</div>
411<div class="line"><a name="l00423"></a><span class="lineno"> 423</span>&#160; }</div>
412<div class="line"><a name="l00424"></a><span class="lineno"> 424</span>&#160;</div>
413<div class="line"><a name="l00425"></a><span class="lineno"> 425</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">typename</span> It&gt;</div>
414<div class="line"><a name="l00426"></a><span class="lineno"> 426</span>&#160; <span class="keyword">static</span> <a class="code" href="namespaceboost_1_1locale_1_1utf.html#a068111a6b9d6d465a63893ed5c05e2f8">code_point</a> <a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#a9b6b01fa6705ba67ac78359ddee03213">decode</a>(It &amp;current,It last)</div>
415<div class="line"><a name="l00427"></a><span class="lineno"> 427</span>&#160; {</div>
416<div class="line"><a name="l00428"></a><span class="lineno"> 428</span>&#160; <span class="keywordflow">if</span>(BOOST_LOCALE_UNLIKELY(current == last))</div>
417<div class="line"><a name="l00429"></a><span class="lineno"> 429</span>&#160; <span class="keywordflow">return</span> <a class="code" href="namespaceboost_1_1locale_1_1utf.html#a20dbe458fd18229a0e6c09888d031b38">boost::locale::utf::incomplete</a>;</div>
418<div class="line"><a name="l00430"></a><span class="lineno"> 430</span>&#160; <a class="code" href="namespaceboost_1_1locale_1_1utf.html#a068111a6b9d6d465a63893ed5c05e2f8">code_point</a> c=*current++;</div>
419<div class="line"><a name="l00431"></a><span class="lineno"> 431</span>&#160; <span class="keywordflow">if</span>(BOOST_LOCALE_UNLIKELY(!<a class="code" href="namespaceboost_1_1locale_1_1utf.html#a189805c4e9f4c033ce5f88daf780e08e">is_valid_codepoint</a>(c)))</div>
420<div class="line"><a name="l00432"></a><span class="lineno"> 432</span>&#160; <span class="keywordflow">return</span> <a class="code" href="namespaceboost_1_1locale_1_1utf.html#a30010000878c7732340bda8956b844fb">boost::locale::utf::illegal</a>;</div>
421<div class="line"><a name="l00433"></a><span class="lineno"> 433</span>&#160; <span class="keywordflow">return</span> c;</div>
422<div class="line"><a name="l00434"></a><span class="lineno"> 434</span>&#160; }</div>
423<div class="line"><a name="l00435"></a><span class="lineno"> 435</span>&#160; <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#abb4cb63a924d19505c2cb6e930c68a13">max_width</a> = 1;</div>
424<div class="line"><a name="l00436"></a><span class="lineno"> 436</span>&#160; <span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#a26c106ec8816f48431f882017ab46763">width</a>(<a class="code" href="namespaceboost_1_1locale_1_1utf.html#a068111a6b9d6d465a63893ed5c05e2f8">code_point</a> <span class="comment">/*u*/</span>)</div>
425<div class="line"><a name="l00437"></a><span class="lineno"> 437</span>&#160; {</div>
426<div class="line"><a name="l00438"></a><span class="lineno"> 438</span>&#160; <span class="keywordflow">return</span> 1;</div>
427<div class="line"><a name="l00439"></a><span class="lineno"> 439</span>&#160; }</div>
428<div class="line"><a name="l00440"></a><span class="lineno"> 440</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">typename</span> It&gt;</div>
429<div class="line"><a name="l00441"></a><span class="lineno"> 441</span>&#160; <span class="keyword">static</span> It <a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#acd59f628af084f800f8a86cdd8124fd8">encode</a>(<a class="code" href="namespaceboost_1_1locale_1_1utf.html#a068111a6b9d6d465a63893ed5c05e2f8">code_point</a> u,It out)</div>
430<div class="line"><a name="l00442"></a><span class="lineno"> 442</span>&#160; {</div>
431<div class="line"><a name="l00443"></a><span class="lineno"> 443</span>&#160; *out++ = <span class="keyword">static_cast&lt;</span><a class="code" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#accca9dc2d8fe018b9b5640c48e3470e4">char_type</a><span class="keyword">&gt;</span>(u);</div>
432<div class="line"><a name="l00444"></a><span class="lineno"> 444</span>&#160; <span class="keywordflow">return</span> out;</div>
433<div class="line"><a name="l00445"></a><span class="lineno"> 445</span>&#160; }</div>
434<div class="line"><a name="l00446"></a><span class="lineno"> 446</span>&#160;</div>
435<div class="line"><a name="l00447"></a><span class="lineno"> 447</span>&#160; }; <span class="comment">// utf32</span></div>
436<div class="line"><a name="l00448"></a><span class="lineno"> 448</span>&#160;</div>
437<div class="line"><a name="l00449"></a><span class="lineno"> 449</span>&#160;<span class="preprocessor"> #endif</span></div>
438<div class="line"><a name="l00450"></a><span class="lineno"> 450</span>&#160;<span class="preprocessor"></span></div>
439<div class="line"><a name="l00451"></a><span class="lineno"> 451</span>&#160;</div>
440<div class="line"><a name="l00452"></a><span class="lineno"> 452</span>&#160;} <span class="comment">// utf</span></div>
441<div class="line"><a name="l00453"></a><span class="lineno"> 453</span>&#160;} <span class="comment">// locale</span></div>
442<div class="line"><a name="l00454"></a><span class="lineno"> 454</span>&#160;} <span class="comment">// boost</span></div>
443<div class="line"><a name="l00455"></a><span class="lineno"> 455</span>&#160;</div>
444<div class="line"><a name="l00456"></a><span class="lineno"> 456</span>&#160;</div>
445<div class="line"><a name="l00457"></a><span class="lineno"> 457</span>&#160;<span class="preprocessor">#endif</span></div>
446<div class="line"><a name="l00458"></a><span class="lineno"> 458</span>&#160;<span class="preprocessor"></span></div>
447<div class="line"><a name="l00459"></a><span class="lineno"> 459</span>&#160;<span class="comment">// vim: tabstop=4 expandtab shiftwidth=4 softtabstop=4</span></div>
448<div class="line"><a name="l00460"></a><span class="lineno"> 460</span>&#160;</div>
449<div class="ttc" id="structboost_1_1locale_1_1utf_1_1utf__traits_html_a9b6b01fa6705ba67ac78359ddee03213"><div class="ttname"><a href="structboost_1_1locale_1_1utf_1_1utf__traits.html#a9b6b01fa6705ba67ac78359ddee03213">boost::locale::utf::utf_traits::decode</a></div><div class="ttdeci">static code_point decode(Iterator &amp;p, Iterator e)</div></div>
450<div class="ttc" id="namespaceboost_1_1locale_1_1utf_html_a189805c4e9f4c033ce5f88daf780e08e"><div class="ttname"><a href="namespaceboost_1_1locale_1_1utf.html#a189805c4e9f4c033ce5f88daf780e08e">boost::locale::utf::is_valid_codepoint</a></div><div class="ttdeci">bool is_valid_codepoint(code_point v)</div><div class="ttdoc">the function checks if v is a valid code point </div><div class="ttdef"><b>Definition:</b> utf.hpp:49</div></div>
451<div class="ttc" id="structboost_1_1locale_1_1utf_1_1utf__traits_html_acd59f628af084f800f8a86cdd8124fd8"><div class="ttname"><a href="structboost_1_1locale_1_1utf_1_1utf__traits.html#acd59f628af084f800f8a86cdd8124fd8">boost::locale::utf::utf_traits::encode</a></div><div class="ttdeci">static Iterator encode(code_point value, Iterator out)</div></div>
452<div class="ttc" id="namespaceboost_1_1locale_1_1utf_html_a20dbe458fd18229a0e6c09888d031b38"><div class="ttname"><a href="namespaceboost_1_1locale_1_1utf.html#a20dbe458fd18229a0e6c09888d031b38">boost::locale::utf::incomplete</a></div><div class="ttdeci">static const code_point incomplete</div><div class="ttdoc">Special constant that defines incomplete code point. </div><div class="ttdef"><b>Definition:</b> utf.hpp:44</div></div>
453<div class="ttc" id="namespaceboost_1_1locale_1_1utf_html_a068111a6b9d6d465a63893ed5c05e2f8"><div class="ttname"><a href="namespaceboost_1_1locale_1_1utf.html#a068111a6b9d6d465a63893ed5c05e2f8">boost::locale::utf::code_point</a></div><div class="ttdeci">uint32_t code_point</div><div class="ttdoc">The integral type that can hold a Unicode code point. </div><div class="ttdef"><b>Definition:</b> utf.hpp:34</div></div>
454<div class="ttc" id="namespaceboost_1_1locale_1_1utf_html_a30010000878c7732340bda8956b844fb"><div class="ttname"><a href="namespaceboost_1_1locale_1_1utf.html#a30010000878c7732340bda8956b844fb">boost::locale::utf::illegal</a></div><div class="ttdeci">static const code_point illegal</div><div class="ttdoc">Special constant that defines illegal code point. </div><div class="ttdef"><b>Definition:</b> utf.hpp:39</div></div>
455<div class="ttc" id="structboost_1_1locale_1_1utf_1_1utf__traits_html"><div class="ttname"><a href="structboost_1_1locale_1_1utf_1_1utf__traits.html">boost::locale::utf::utf_traits</a></div><div class="ttdoc">UTF Traits class - functions to convert UTF sequences to and from Unicode code points. </div><div class="ttdef"><b>Definition:</b> utf.hpp:63</div></div>
456<div class="ttc" id="structboost_1_1locale_1_1utf_1_1utf__traits_html_a26c106ec8816f48431f882017ab46763"><div class="ttname"><a href="structboost_1_1locale_1_1utf_1_1utf__traits.html#a26c106ec8816f48431f882017ab46763">boost::locale::utf::utf_traits::width</a></div><div class="ttdeci">static int width(code_point value)</div></div>
457<div class="ttc" id="structboost_1_1locale_1_1utf_1_1utf__traits_html_accca9dc2d8fe018b9b5640c48e3470e4"><div class="ttname"><a href="structboost_1_1locale_1_1utf_1_1utf__traits.html#accca9dc2d8fe018b9b5640c48e3470e4">boost::locale::utf::utf_traits::char_type</a></div><div class="ttdeci">CharType char_type</div><div class="ttdef"><b>Definition:</b> utf.hpp:67</div></div>
458<div class="ttc" id="structboost_1_1locale_1_1utf_1_1utf__traits_html_a8a6b72ba87a817652f522018df51a9a7"><div class="ttname"><a href="structboost_1_1locale_1_1utf_1_1utf__traits.html#a8a6b72ba87a817652f522018df51a9a7">boost::locale::utf::utf_traits::trail_length</a></div><div class="ttdeci">static int trail_length(char_type c)</div></div>
459<div class="ttc" id="structboost_1_1locale_1_1utf_1_1utf__traits_html_a19789c4c26c8d9f576de5272f3d41a11"><div class="ttname"><a href="structboost_1_1locale_1_1utf_1_1utf__traits.html#a19789c4c26c8d9f576de5272f3d41a11">boost::locale::utf::utf_traits::is_lead</a></div><div class="ttdeci">static bool is_lead(char_type c)</div></div>
460<div class="ttc" id="structboost_1_1locale_1_1utf_1_1utf__traits_html_a8ff625b2c19b0d4132f7ec9e6303cb36"><div class="ttname"><a href="structboost_1_1locale_1_1utf_1_1utf__traits.html#a8ff625b2c19b0d4132f7ec9e6303cb36">boost::locale::utf::utf_traits::decode_valid</a></div><div class="ttdeci">static code_point decode_valid(Iterator &amp;p)</div></div>
461<div class="ttc" id="structboost_1_1locale_1_1utf_1_1utf__traits_html_ae2cb78fcb8a58bed3e0ce1d6528a719a"><div class="ttname"><a href="structboost_1_1locale_1_1utf_1_1utf__traits.html#ae2cb78fcb8a58bed3e0ce1d6528a719a">boost::locale::utf::utf_traits::is_trail</a></div><div class="ttdeci">static bool is_trail(char_type c)</div></div>
462<div class="ttc" id="structboost_1_1locale_1_1utf_1_1utf__traits_html_abb4cb63a924d19505c2cb6e930c68a13"><div class="ttname"><a href="structboost_1_1locale_1_1utf_1_1utf__traits.html#abb4cb63a924d19505c2cb6e930c68a13">boost::locale::utf::utf_traits::max_width</a></div><div class="ttdeci">static const int max_width</div><div class="ttdef"><b>Definition:</b> utf.hpp:92</div></div>
463</div><!-- fragment --></div><!-- contents -->
464</div><!-- doc-content -->
465
466 <li class="footer">
467&copy; Copyright 2009-2012 Artyom Beilis, Distributed under the <a href="http://www.boost.org/LICENSE_1_0.txt">Boost Software License</a>, Version 1.0.
468 </li>
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470 </div>
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