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utf_8hpp_source.html

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  70. <div class="title">utf.hpp</div>  </div>
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  72. <div class="contents">
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  73. <div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">//</span></div>
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  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. 

  75. <div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment">//</span></div>
    76. 

  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. 

  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. 

  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>
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  79. <div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment">//</span></div>
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  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>
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  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>
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  82. <div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="preprocessor"></span></div>
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  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. 

  84. <div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;</div>
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  85. <div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="keyword">namespace </span>boost {</div>
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  86. <div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="keyword">namespace </span>locale {</div>
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  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>
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  88. <div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="preprocessor">    #ifdef __GNUC__</span></div>
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  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>
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  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>
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  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>
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  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>
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  94. <div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;<span class="preprocessor"></span><span class="preprocessor">    #endif</span></div>
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  95. <div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;<span class="preprocessor"></span></div>
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  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. 

  97. <div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;</div>
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  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>
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  99. <div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;</div>
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  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>
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  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>
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  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>
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  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>
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  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>
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  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>
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  110. <div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;</div>
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  111. <div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;<span class="preprocessor">    #ifdef BOOST_LOCALE_DOXYGEN</span></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>
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  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>
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  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. 

  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>
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  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>
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  117. <div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;</div>
    118. 

  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>
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  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>
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  120. <div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;</div>
    121. 

  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. 

  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. 

  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. 

  124. <div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;</div>
    125. 

  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. 

  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. 

  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. 

  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. 

  129. <div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;    };</div>
    130. 

  130. <div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;    </div>
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  131. <div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;<span class="preprocessor">    #else</span></div>
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  132. <div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;<span class="preprocessor"></span></div>
    133. 

  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. 

  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. 

  135. <div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;</div>
    136. 

  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>
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  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. 

  138. <div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;</div>
    139. 

  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. 

  140. <div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;        </div>
    141. 

  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. 

  142. <div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;        {</div>
    143. 

  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. 

  144. <div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;            <span class="keywordflow">if</span>(c &lt; 128)</div>
    145. 

  145. <div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;                <span class="keywordflow">return</span> 0;</div>
    146. 

  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. 

  147. <div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;                <span class="keywordflow">return</span> -1;</div>
    148. 

  148. <div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;            <span class="keywordflow">if</span>(c &lt; 224)</div>
    149. 

  149. <div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;                <span class="keywordflow">return</span> 1;</div>
    150. 

  150. <div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;            <span class="keywordflow">if</span>(c &lt; 240)</div>
    151. 

  151. <div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;                <span class="keywordflow">return</span> 2;</div>
    152. 

  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. 

  153. <div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;                <span class="keywordflow">return</span> 3;</div>
    154. 

  154. <div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;            <span class="keywordflow">return</span> -1;</div>
    155. 

  155. <div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;        }</div>
    156. 

  156. <div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;        </div>
    157. 

  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. 

  158. <div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;</div>
    159. 

  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. 

  160. <div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;        {</div>
    161. 

  161. <div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;            <span class="keywordflow">if</span>(value &lt;=0x7F) {</div>
    162. 

  162. <div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;                <span class="keywordflow">return</span> 1;</div>
    163. 

  163. <div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;            }</div>
    164. 

  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. 

  165. <div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;                <span class="keywordflow">return</span> 2;</div>
    166. 

  166. <div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;            }</div>
    167. 

  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. 

  168. <div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;                <span class="keywordflow">return</span> 3;</div>
    169. 

  169. <div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;            }</div>
    170. 

  170. <div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;            <span class="keywordflow">else</span> {</div>
    171. 

  171. <div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;                <span class="keywordflow">return</span> 4;</div>
    172. 

  172. <div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;            }</div>
    173. 

  173. <div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;        }</div>
    174. 

  174. <div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;</div>
    175. 

  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. 

  176. <div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;        {</div>
    177. 

  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. 

  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. 

  179. <div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;        }</div>
    180. 

  180. <div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;</div>
    181. 

  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. 

  182. <div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;        {</div>
    183. 

  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. 

  184. <div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;        }</div>
    185. 

  185. <div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160;        </div>
    186. 

  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. 

  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. 

  188. <div class="line"><a name="l00194"></a><span class="lineno">  194</span>&#160;        {</div>
    189. 

  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. 

  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. 

  191. <div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;</div>
    192. 

  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. 

  193. <div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160;</div>
    194. 

  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. 

  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. 

  196. <div class="line"><a name="l00202"></a><span class="lineno">  202</span>&#160;</div>
    197. 

  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. 

  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. 

  199. <div class="line"><a name="l00205"></a><span class="lineno">  205</span>&#160;</div>
    200. 

  200. <div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160;            <span class="comment">//</span></div>
    201. 

  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. 

  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. 

  203. <div class="line"><a name="l00209"></a><span class="lineno">  209</span>&#160;            <span class="comment">//</span></div>
    204. 

  204. <div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160;            <span class="keywordflow">if</span>(trail_size == 0)</div>
    205. 

  205. <div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160;                <span class="keywordflow">return</span> lead;</div>
    206. 

  206. <div class="line"><a name="l00212"></a><span class="lineno">  212</span>&#160;            </div>
    207. 

  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. 

  208. <div class="line"><a name="l00214"></a><span class="lineno">  214</span>&#160;</div>
    209. 

  209. <div class="line"><a name="l00215"></a><span class="lineno">  215</span>&#160;            <span class="comment">// Read the rest</span></div>
    210. 

  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. 

  211. <div class="line"><a name="l00217"></a><span class="lineno">  217</span>&#160;            <span class="keywordflow">switch</span>(trail_size) {</div>
    212. 

  212. <div class="line"><a name="l00218"></a><span class="lineno">  218</span>&#160;            <span class="keywordflow">case</span> 3:</div>
    213. 

  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. 

  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. 

  215. <div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160;                tmp = *p++;</div>
    216. 

  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. 

  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. 

  218. <div class="line"><a name="l00224"></a><span class="lineno">  224</span>&#160;                c = (c &lt;&lt; 6) | ( tmp &amp; 0x3F);</div>
    219. 

  219. <div class="line"><a name="l00225"></a><span class="lineno">  225</span>&#160;            <span class="keywordflow">case</span> 2:</div>
    220. 

  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. 

  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. 

  222. <div class="line"><a name="l00228"></a><span class="lineno">  228</span>&#160;                tmp = *p++;</div>
    223. 

  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. 

  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. 

  225. <div class="line"><a name="l00231"></a><span class="lineno">  231</span>&#160;                c = (c &lt;&lt; 6) | ( tmp &amp; 0x3F);</div>
    226. 

  226. <div class="line"><a name="l00232"></a><span class="lineno">  232</span>&#160;            <span class="keywordflow">case</span> 1:</div>
    227. 

  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. 

  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. 

  229. <div class="line"><a name="l00235"></a><span class="lineno">  235</span>&#160;                tmp = *p++;</div>
    230. 

  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. 

  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. 

  232. <div class="line"><a name="l00238"></a><span class="lineno">  238</span>&#160;                c = (c &lt;&lt; 6) | ( tmp &amp; 0x3F);</div>
    233. 

  233. <div class="line"><a name="l00239"></a><span class="lineno">  239</span>&#160;            }</div>
    234. 

  234. <div class="line"><a name="l00240"></a><span class="lineno">  240</span>&#160;</div>
    235. 

  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. 

  236. <div class="line"><a name="l00242"></a><span class="lineno">  242</span>&#160;            <span class="comment">// valid range</span></div>
    237. 

  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. 

  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. 

  239. <div class="line"><a name="l00245"></a><span class="lineno">  245</span>&#160;</div>
    240. 

  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. 

  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. 

  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. 

  243. <div class="line"><a name="l00249"></a><span class="lineno">  249</span>&#160;</div>
    244. 

  244. <div class="line"><a name="l00250"></a><span class="lineno">  250</span>&#160;            <span class="keywordflow">return</span> c;</div>
    245. 

  245. <div class="line"><a name="l00251"></a><span class="lineno">  251</span>&#160;</div>
    246. 

  246. <div class="line"><a name="l00252"></a><span class="lineno">  252</span>&#160;        }</div>
    247. 

  247. <div class="line"><a name="l00253"></a><span class="lineno">  253</span>&#160;        </div>
    248. 

  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. 

  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. 

  250. <div class="line"><a name="l00256"></a><span class="lineno">  256</span>&#160;        {</div>
    251. 

  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. 

  252. <div class="line"><a name="l00258"></a><span class="lineno">  258</span>&#160;            <span class="keywordflow">if</span>(lead &lt; 192)</div>
    253. 

  253. <div class="line"><a name="l00259"></a><span class="lineno">  259</span>&#160;                <span class="keywordflow">return</span> lead;</div>
    254. 

  254. <div class="line"><a name="l00260"></a><span class="lineno">  260</span>&#160;</div>
    255. 

  255. <div class="line"><a name="l00261"></a><span class="lineno">  261</span>&#160;            <span class="keywordtype">int</span> trail_size;</div>
    256. 

  256. <div class="line"><a name="l00262"></a><span class="lineno">  262</span>&#160;</div>
    257. 

  257. <div class="line"><a name="l00263"></a><span class="lineno">  263</span>&#160;            <span class="keywordflow">if</span>(lead &lt; 224)</div>
    258. 

  258. <div class="line"><a name="l00264"></a><span class="lineno">  264</span>&#160;                trail_size = 1;</div>
    259. 

  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. 

  260. <div class="line"><a name="l00266"></a><span class="lineno">  266</span>&#160;                trail_size = 2;</div>
    261. 

  261. <div class="line"><a name="l00267"></a><span class="lineno">  267</span>&#160;            <span class="keywordflow">else</span></div>
    262. 

  262. <div class="line"><a name="l00268"></a><span class="lineno">  268</span>&#160;                trail_size = 3;</div>
    263. 

  263. <div class="line"><a name="l00269"></a><span class="lineno">  269</span>&#160;            </div>
    264. 

  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. 

  265. <div class="line"><a name="l00271"></a><span class="lineno">  271</span>&#160;</div>
    266. 

  266. <div class="line"><a name="l00272"></a><span class="lineno">  272</span>&#160;            <span class="keywordflow">switch</span>(trail_size) {</div>
    267. 

  267. <div class="line"><a name="l00273"></a><span class="lineno">  273</span>&#160;            <span class="keywordflow">case</span> 3:</div>
    268. 

  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. 

  269. <div class="line"><a name="l00275"></a><span class="lineno">  275</span>&#160;            <span class="keywordflow">case</span> 2:</div>
    270. 

  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. 

  271. <div class="line"><a name="l00277"></a><span class="lineno">  277</span>&#160;            <span class="keywordflow">case</span> 1:</div>
    272. 

  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. 

  273. <div class="line"><a name="l00279"></a><span class="lineno">  279</span>&#160;            }</div>
    274. 

  274. <div class="line"><a name="l00280"></a><span class="lineno">  280</span>&#160;</div>
    275. 

  275. <div class="line"><a name="l00281"></a><span class="lineno">  281</span>&#160;            <span class="keywordflow">return</span> c;</div>
    276. 

  276. <div class="line"><a name="l00282"></a><span class="lineno">  282</span>&#160;        }</div>
    277. 

  277. <div class="line"><a name="l00283"></a><span class="lineno">  283</span>&#160;</div>
    278. 

  278. <div class="line"><a name="l00284"></a><span class="lineno">  284</span>&#160;</div>
    279. 

  279. <div class="line"><a name="l00285"></a><span class="lineno">  285</span>&#160;</div>
    280. 

  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. 

  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. 

  282. <div class="line"><a name="l00288"></a><span class="lineno">  288</span>&#160;        {</div>
    283. 

  283. <div class="line"><a name="l00289"></a><span class="lineno">  289</span>&#160;            <span class="keywordflow">if</span>(value &lt;= 0x7F) {</div>
    284. 

  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. 

  285. <div class="line"><a name="l00291"></a><span class="lineno">  291</span>&#160;            }</div>
    286. 

  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. 

  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. 

  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. 

  289. <div class="line"><a name="l00295"></a><span class="lineno">  295</span>&#160;            }</div>
    290. 

  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. 

  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. 

  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. 

  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. 

  294. <div class="line"><a name="l00300"></a><span class="lineno">  300</span>&#160;            }</div>
    295. 

  295. <div class="line"><a name="l00301"></a><span class="lineno">  301</span>&#160;            <span class="keywordflow">else</span> {</div>
    296. 

  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. 

  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. 

  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. 

  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. 

  300. <div class="line"><a name="l00306"></a><span class="lineno">  306</span>&#160;            }</div>
    301. 

  301. <div class="line"><a name="l00307"></a><span class="lineno">  307</span>&#160;            <span class="keywordflow">return</span> out;</div>
    302. 

  302. <div class="line"><a name="l00308"></a><span class="lineno">  308</span>&#160;        }</div>
    303. 

  303. <div class="line"><a name="l00309"></a><span class="lineno">  309</span>&#160;    }; <span class="comment">// utf8</span></div>
    304. 

  304. <div class="line"><a name="l00310"></a><span class="lineno">  310</span>&#160;</div>
    305. 

  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. 

  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. 

  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. 

  308. <div class="line"><a name="l00314"></a><span class="lineno">  314</span>&#160;</div>
    309. 

  309. <div class="line"><a name="l00315"></a><span class="lineno">  315</span>&#160;        <span class="comment">// See RFC 2781</span></div>
    310. 

  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. 

  311. <div class="line"><a name="l00317"></a><span class="lineno">  317</span>&#160;        {</div>
    312. 

  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. 

  313. <div class="line"><a name="l00319"></a><span class="lineno">  319</span>&#160;        }</div>
    314. 

  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. 

  315. <div class="line"><a name="l00321"></a><span class="lineno">  321</span>&#160;        {</div>
    316. 

  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. 

  317. <div class="line"><a name="l00323"></a><span class="lineno">  323</span>&#160;        }</div>
    318. 

  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. 

  319. <div class="line"><a name="l00325"></a><span class="lineno">  325</span>&#160;        {</div>
    320. 

  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. 

  321. <div class="line"><a name="l00327"></a><span class="lineno">  327</span>&#160;        }</div>
    322. 

  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. 

  323. <div class="line"><a name="l00329"></a><span class="lineno">  329</span>&#160;        {</div>
    324. 

  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. 

  325. <div class="line"><a name="l00331"></a><span class="lineno">  331</span>&#160;                <span class="keywordflow">return</span> 1;</div>
    326. 

  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. 

  327. <div class="line"><a name="l00333"></a><span class="lineno">  333</span>&#160;                <span class="keywordflow">return</span> -1;</div>
    328. 

  328. <div class="line"><a name="l00334"></a><span class="lineno">  334</span>&#160;            <span class="keywordflow">return</span> 0;</div>
    329. 

  329. <div class="line"><a name="l00335"></a><span class="lineno">  335</span>&#160;        }</div>
    330. 

  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. 

  331. <div class="line"><a name="l00340"></a><span class="lineno">  340</span>&#160;        {</div>
    332. 

  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. 

  333. <div class="line"><a name="l00342"></a><span class="lineno">  342</span>&#160;        }</div>
    334. 

  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. 

  335. <div class="line"><a name="l00347"></a><span class="lineno">  347</span>&#160;        {</div>
    336. 

  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. 

  337. <div class="line"><a name="l00349"></a><span class="lineno">  349</span>&#160;        }</div>
    338. 

  338. <div class="line"><a name="l00350"></a><span class="lineno">  350</span>&#160;</div>
    339. 

  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. 

  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. 

  341. <div class="line"><a name="l00353"></a><span class="lineno">  353</span>&#160;        {</div>
    342. 

  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. 

  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. 

  344. <div class="line"><a name="l00356"></a><span class="lineno">  356</span>&#160;            uint16_t w1=*current++;</div>
    345. 

  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. 

  346. <div class="line"><a name="l00358"></a><span class="lineno">  358</span>&#160;                <span class="keywordflow">return</span> w1;</div>
    347. 

  347. <div class="line"><a name="l00359"></a><span class="lineno">  359</span>&#160;            }</div>
    348. 

  348. <div class="line"><a name="l00360"></a><span class="lineno">  360</span>&#160;            <span class="keywordflow">if</span>(w1 &gt; 0xDBFF)</div>
    349. 

  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. 

  350. <div class="line"><a name="l00362"></a><span class="lineno">  362</span>&#160;            <span class="keywordflow">if</span>(current==last)</div>
    351. 

  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. 

  352. <div class="line"><a name="l00364"></a><span class="lineno">  364</span>&#160;            uint16_t w2=*current++;</div>
    353. 

  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. 

  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. 

  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. 

  356. <div class="line"><a name="l00368"></a><span class="lineno">  368</span>&#160;        }</div>
    357. 

  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. 

  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. 

  359. <div class="line"><a name="l00371"></a><span class="lineno">  371</span>&#160;        {</div>
    360. 

  360. <div class="line"><a name="l00372"></a><span class="lineno">  372</span>&#160;            uint16_t w1=*current++;</div>
    361. 

  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. 

  362. <div class="line"><a name="l00374"></a><span class="lineno">  374</span>&#160;                <span class="keywordflow">return</span> w1;</div>
    363. 

  363. <div class="line"><a name="l00375"></a><span class="lineno">  375</span>&#160;            }</div>
    364. 

  364. <div class="line"><a name="l00376"></a><span class="lineno">  376</span>&#160;            uint16_t w2=*current++;</div>
    365. 

  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. 

  366. <div class="line"><a name="l00378"></a><span class="lineno">  378</span>&#160;        }</div>
    367. 

  367. <div class="line"><a name="l00379"></a><span class="lineno">  379</span>&#160;</div>
    368. 

  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. 

  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. 

  370. <div class="line"><a name="l00382"></a><span class="lineno">  382</span>&#160;        {</div>
    371. 

  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. 

  372. <div class="line"><a name="l00384"></a><span class="lineno">  384</span>&#160;        }</div>
    373. 

  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. 

  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. 

  375. <div class="line"><a name="l00387"></a><span class="lineno">  387</span>&#160;        {</div>
    376. 

  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. 

  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. 

  378. <div class="line"><a name="l00390"></a><span class="lineno">  390</span>&#160;            }</div>
    379. 

  379. <div class="line"><a name="l00391"></a><span class="lineno">  391</span>&#160;            <span class="keywordflow">else</span> {</div>
    380. 

  380. <div class="line"><a name="l00392"></a><span class="lineno">  392</span>&#160;                u -= 0x10000;</div>
    381. 

  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. 

  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. 

  383. <div class="line"><a name="l00395"></a><span class="lineno">  395</span>&#160;            }</div>
    384. 

  384. <div class="line"><a name="l00396"></a><span class="lineno">  396</span>&#160;            <span class="keywordflow">return</span> out;</div>
    385. 

  385. <div class="line"><a name="l00397"></a><span class="lineno">  397</span>&#160;        }</div>
    386. 

  386. <div class="line"><a name="l00398"></a><span class="lineno">  398</span>&#160;    }; <span class="comment">// utf16;</span></div>
    387. 

  387. <div class="line"><a name="l00399"></a><span class="lineno">  399</span>&#160;</div>
    388. 

  388. <div class="line"><a name="l00400"></a><span class="lineno">  400</span>&#160;        </div>
    389. 

  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. 

  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. 

  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. 

  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. 

  393. <div class="line"><a name="l00405"></a><span class="lineno">  405</span>&#160;        {</div>
    394. 

  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. 

  395. <div class="line"><a name="l00407"></a><span class="lineno">  407</span>&#160;                <span class="keywordflow">return</span> 0;</div>
    396. 

  396. <div class="line"><a name="l00408"></a><span class="lineno">  408</span>&#160;            <span class="keywordflow">return</span> -1;</div>
    397. 

  397. <div class="line"><a name="l00409"></a><span class="lineno">  409</span>&#160;        }</div>
    398. 

  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. 

  399. <div class="line"><a name="l00411"></a><span class="lineno">  411</span>&#160;        {</div>
    400. 

  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. 

  401. <div class="line"><a name="l00413"></a><span class="lineno">  413</span>&#160;        }</div>
    402. 

  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. 

  403. <div class="line"><a name="l00415"></a><span class="lineno">  415</span>&#160;        {</div>
    404. 

  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. 

  405. <div class="line"><a name="l00417"></a><span class="lineno">  417</span>&#160;        }</div>
    406. 

  406. <div class="line"><a name="l00418"></a><span class="lineno">  418</span>&#160;</div>
    407. 

  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. 

  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. 

  409. <div class="line"><a name="l00421"></a><span class="lineno">  421</span>&#160;        {</div>
    410. 

  410. <div class="line"><a name="l00422"></a><span class="lineno">  422</span>&#160;            <span class="keywordflow">return</span> *current++;</div>
    411. 

  411. <div class="line"><a name="l00423"></a><span class="lineno">  423</span>&#160;        }</div>
    412. 

  412. <div class="line"><a name="l00424"></a><span class="lineno">  424</span>&#160;</div>
    413. 

  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. 

  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. 

  415. <div class="line"><a name="l00427"></a><span class="lineno">  427</span>&#160;        {</div>
    416. 

  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. 

  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. 

  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. 

  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. 

  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. 

  421. <div class="line"><a name="l00433"></a><span class="lineno">  433</span>&#160;            <span class="keywordflow">return</span> c;</div>
    422. 

  422. <div class="line"><a name="l00434"></a><span class="lineno">  434</span>&#160;        }</div>
    423. 

  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. 

  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. 

  425. <div class="line"><a name="l00437"></a><span class="lineno">  437</span>&#160;        {</div>
    426. 

  426. <div class="line"><a name="l00438"></a><span class="lineno">  438</span>&#160;            <span class="keywordflow">return</span> 1;</div>
    427. 

  427. <div class="line"><a name="l00439"></a><span class="lineno">  439</span>&#160;        }</div>
    428. 

  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. 

  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. 

  430. <div class="line"><a name="l00442"></a><span class="lineno">  442</span>&#160;        {</div>
    431. 

  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. 

  432. <div class="line"><a name="l00444"></a><span class="lineno">  444</span>&#160;            <span class="keywordflow">return</span> out;</div>
    433. 

  433. <div class="line"><a name="l00445"></a><span class="lineno">  445</span>&#160;        }</div>
    434. 

  434. <div class="line"><a name="l00446"></a><span class="lineno">  446</span>&#160;</div>
    435. 

  435. <div class="line"><a name="l00447"></a><span class="lineno">  447</span>&#160;    }; <span class="comment">// utf32</span></div>
    436. 

  436. <div class="line"><a name="l00448"></a><span class="lineno">  448</span>&#160;</div>
    437. 

  437. <div class="line"><a name="l00449"></a><span class="lineno">  449</span>&#160;<span class="preprocessor">    #endif</span></div>
    438. 

  438. <div class="line"><a name="l00450"></a><span class="lineno">  450</span>&#160;<span class="preprocessor"></span></div>
    439. 

  439. <div class="line"><a name="l00451"></a><span class="lineno">  451</span>&#160;</div>
    440. 

  440. <div class="line"><a name="l00452"></a><span class="lineno">  452</span>&#160;} <span class="comment">// utf</span></div>
    441. 

  441. <div class="line"><a name="l00453"></a><span class="lineno">  453</span>&#160;} <span class="comment">// locale</span></div>
    442. 

  442. <div class="line"><a name="l00454"></a><span class="lineno">  454</span>&#160;} <span class="comment">// boost</span></div>
    443. 

  443. <div class="line"><a name="l00455"></a><span class="lineno">  455</span>&#160;</div>
    444. 

  444. <div class="line"><a name="l00456"></a><span class="lineno">  456</span>&#160;</div>
    445. 

  445. <div class="line"><a name="l00457"></a><span class="lineno">  457</span>&#160;<span class="preprocessor">#endif</span></div>
    446. 

  446. <div class="line"><a name="l00458"></a><span class="lineno">  458</span>&#160;<span class="preprocessor"></span></div>
    447. 

  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. 

  448. <div class="line"><a name="l00460"></a><span class="lineno">  460</span>&#160;</div>
    449. 

  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. 

  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. 

  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. 

  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. 

  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. 

  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. 

  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. 

  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. 

  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. 

  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. 

  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. 

  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. 

  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. 

  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>
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