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<div class="title">std::regex_traits< _Ch_type > Class Template Reference<div class="ingroups"><a class="el" href="a01496.html">Regular Expressions</a></div></div> </div>
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Public Types</h2></td></tr>
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typedef _RegexMask </td><td class="memItemRight" valign="bottom"><b>char_class_type</b></td></tr>
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typedef _Ch_type </td><td class="memItemRight" valign="bottom"><b>char_type</b></td></tr>
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typedef <a class="el" href="a05819.html">std::locale</a> </td><td class="memItemRight" valign="bottom"><b>locale_type</b></td></tr>
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typedef <a class="el" href="a04771.html">std::basic_string</a>< char_type > </td><td class="memItemRight" valign="bottom"><b>string_type</b></td></tr>
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Public Member Functions</h2></td></tr>
<tr class="memitem:a4db88d5c982e69fbd0202c02de2f714a"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="a06699.html#a4db88d5c982e69fbd0202c02de2f714a">regex_traits</a> ()</td></tr>
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<tr class="memitem:aca8761334621d52895e4518448b6773c"><td class="memItemLeft" align="right" valign="top"><a class="el" href="a05819.html">locale_type</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="a06699.html#aca8761334621d52895e4518448b6773c">getloc</a> () const</td></tr>
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<tr class="memitem:ae1d71eed7ede0411f443426e1d0b781d"><td class="memItemLeft" align="right" valign="top"><a class="el" href="a05819.html">locale_type</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="a06699.html#ae1d71eed7ede0411f443426e1d0b781d">imbue</a> (<a class="el" href="a05819.html">locale_type</a> __loc)</td></tr>
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<tr class="memitem:ad819d5f658133c4dd71c1fa5a7cb9031"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="a06699.html#ad819d5f658133c4dd71c1fa5a7cb9031">isctype</a> (_Ch_type __c, char_class_type __f) const</td></tr>
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<tr class="memitem:ae475712d0d2b637992cfe799ea83d99c"><td class="memTemplParams" colspan="2">template<typename _Fwd_iter > </td></tr>
<tr class="memitem:ae475712d0d2b637992cfe799ea83d99c"><td class="memTemplItemLeft" align="right" valign="top">char_class_type </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a06699.html#ae475712d0d2b637992cfe799ea83d99c">lookup_classname</a> (_Fwd_iter __first, _Fwd_iter __last, bool __icase=false) const</td></tr>
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<tr class="memitem:ac1a97012352a2ccef114895cfb08307c"><td class="memTemplParams" colspan="2">template<typename _Fwd_iter > </td></tr>
<tr class="memitem:ac1a97012352a2ccef114895cfb08307c"><td class="memTemplItemLeft" align="right" valign="top"><a class="el" href="a04771.html">string_type</a> </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a06699.html#ac1a97012352a2ccef114895cfb08307c">lookup_collatename</a> (_Fwd_iter __first, _Fwd_iter __last) const</td></tr>
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<tr class="memitem:af4d286d995ec6ff200854960c15b78c8"><td class="memTemplParams" colspan="2">template<typename _Fwd_iter > </td></tr>
<tr class="memitem:af4d286d995ec6ff200854960c15b78c8"><td class="memTemplItemLeft" align="right" valign="top"><a class="el" href="a04771.html">string_type</a> </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a06699.html#af4d286d995ec6ff200854960c15b78c8">transform</a> (_Fwd_iter __first, _Fwd_iter __last) const</td></tr>
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<tr class="memitem:a31b5b84c5919d3fd0658cf8c18df0160"><td class="memTemplParams" colspan="2">template<typename _Fwd_iter > </td></tr>
<tr class="memitem:a31b5b84c5919d3fd0658cf8c18df0160"><td class="memTemplItemLeft" align="right" valign="top"><a class="el" href="a04771.html">string_type</a> </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a06699.html#a31b5b84c5919d3fd0658cf8c18df0160">transform_primary</a> (_Fwd_iter __first, _Fwd_iter __last) const</td></tr>
<tr class="separator:a31b5b84c5919d3fd0658cf8c18df0160"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a001a4c2c5d9b06d4cc7e9a83310255c4"><td class="memItemLeft" align="right" valign="top">char_type </td><td class="memItemRight" valign="bottom"><a class="el" href="a06699.html#a001a4c2c5d9b06d4cc7e9a83310255c4">translate</a> (char_type __c) const</td></tr>
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<tr class="memitem:aa92edaaafe63f2333dc9d1ce9167c0f3"><td class="memItemLeft" align="right" valign="top">char_type </td><td class="memItemRight" valign="bottom"><a class="el" href="a06699.html#aa92edaaafe63f2333dc9d1ce9167c0f3">translate_nocase</a> (char_type __c) const</td></tr>
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<tr class="memitem:a5b1afcb8b3cb7d323dfb6fc8db08310a"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="a06699.html#a5b1afcb8b3cb7d323dfb6fc8db08310a">value</a> (_Ch_type __ch, int __radix) const</td></tr>
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Static Public Member Functions</h2></td></tr>
<tr class="memitem:a2d1679803ff038b130a3ac2d545da164"><td class="memItemLeft" align="right" valign="top">static std::size_t </td><td class="memItemRight" valign="bottom"><a class="el" href="a06699.html#a2d1679803ff038b130a3ac2d545da164">length</a> (const char_type *__p)</td></tr>
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Protected Attributes</h2></td></tr>
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<a class="el" href="a05819.html">locale_type</a> </td><td class="memItemRight" valign="bottom"><b>_M_locale</b></td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><h3>template<typename _Ch_type><br />
class std::regex_traits< _Ch_type ></h3>
<p>Describes aspects of a regular expression. </p>
<p>A regular expression traits class that satisfies the requirements of section [28.7].</p>
<p>The class regex is parameterized around a set of related types and functions used to complete the definition of its semantics. This class satisfies the requirements of such a traits class. </p>
<p class="definition">Definition at line <a class="el" href="a00464_source.html#l00081">81</a> of file <a class="el" href="a00464_source.html">regex.h</a>.</p>
</div><h2 class="groupheader">Constructor & Destructor Documentation</h2>
<a id="a4db88d5c982e69fbd0202c02de2f714a"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a4db88d5c982e69fbd0202c02de2f714a">◆ </a></span>regex_traits()</h2>
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template<typename _Ch_type> </div>
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<td class="memname"><a class="el" href="a06699.html">std::regex_traits</a>< _Ch_type >::<a class="el" href="a06699.html">regex_traits</a> </td>
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<p>Constructs a default traits object. </p>
<p class="definition">Definition at line <a class="el" href="a00464_source.html#l00158">158</a> of file <a class="el" href="a00464_source.html">regex.h</a>.</p>
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<h2 class="groupheader">Member Function Documentation</h2>
<a id="aca8761334621d52895e4518448b6773c"></a>
<h2 class="memtitle"><span class="permalink"><a href="#aca8761334621d52895e4518448b6773c">◆ </a></span>getloc()</h2>
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template<typename _Ch_type> </div>
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<td class="memname"><a class="el" href="a05819.html">locale_type</a> <a class="el" href="a06699.html">std::regex_traits</a>< _Ch_type >::getloc </td>
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<p>Gets a copy of the current locale in use by the regex_traits object. </p>
<p class="definition">Definition at line <a class="el" href="a00464_source.html#l00371">371</a> of file <a class="el" href="a00464_source.html">regex.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#ae1d71eed7ede0411f443426e1d0b781d">◆ </a></span>imbue()</h2>
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<p>Imbues the regex_traits object with a copy of a new locale. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">__loc</td><td>A locale.</td></tr>
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</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>a copy of the previous locale in use by the regex_traits object.</dd></dl>
<dl class="section note"><dt>Note</dt><dd>Calling imbue with a different locale than the one currently in use invalidates all cached data held by *this. </dd></dl>
<p class="definition">Definition at line <a class="el" href="a00464_source.html#l00360">360</a> of file <a class="el" href="a00464_source.html">regex.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#ad819d5f658133c4dd71c1fa5a7cb9031">◆ </a></span>isctype()</h2>
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<p>Determines if <code>c</code> is a member of an identified class. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">__c</td><td>a character. </td></tr>
<tr><td class="paramname">__f</td><td>a class type (as returned from lookup_classname).</td></tr>
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<dl class="section return"><dt>Returns</dt><dd>true if the character <code>__c</code> is a member of the classification represented by <code>__f</code>, false otherwise.</dd></dl>
<dl class="exception"><dt>Exceptions</dt><dd>
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<tr><td class="paramname">std::bad_cast</td><td>if the current locale does not have a ctype facet. </td></tr>
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<p class="definition">Definition at line <a class="el" href="a00467_source.html#l00327">327</a> of file <a class="el" href="a00467_source.html">regex.tcc</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a2d1679803ff038b130a3ac2d545da164">◆ </a></span>length()</h2>
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<p>Gives the length of a C-style string starting at <code>__p</code>. </p>
<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">__p</td><td>a pointer to the start of a character sequence.</td></tr>
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<dl class="section return"><dt>Returns</dt><dd>the number of characters between <code>*__p</code> and the first default-initialized value of type <code>char_type</code>. In other words, uses the C-string algorithm for determining the length of a sequence of characters. </dd></dl>
<p class="definition">Definition at line <a class="el" href="a00464_source.html#l00171">171</a> of file <a class="el" href="a00464_source.html">regex.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#ae475712d0d2b637992cfe799ea83d99c">◆ </a></span>lookup_classname()</h2>
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<p>Maps one or more characters to a named character classification. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">__first</td><td>beginning of the character sequence. </td></tr>
<tr><td class="paramname">__last</td><td>one-past-the-end of the character sequence. </td></tr>
<tr><td class="paramname">__icase</td><td>ignores the case of the classification name.</td></tr>
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<dl class="section return"><dt>Returns</dt><dd>an unspecified value that represents the character classification named by the character sequence designated by the iterator range [__first, __last). If <code>icase</code> is true, the returned mask identifies the classification regardless of the case of the characters to be matched (for example, [[:lower:]] is the same as [[:alpha:]]), otherwise a case-dependent classification is returned. The value returned shall be independent of the case of the characters in the character sequence. If the name is not recognized then returns a value that compares equal to 0.</dd></dl>
<p>At least the following names (or their wide-character equivalent) are supported.</p><ul>
<li>d</li>
<li>w</li>
<li>s</li>
<li>alnum</li>
<li>alpha</li>
<li>blank</li>
<li>cntrl</li>
<li>digit</li>
<li>graph</li>
<li>lower</li>
<li>print</li>
<li>punct</li>
<li>space</li>
<li>upper</li>
<li>xdigit </li>
</ul>
<p class="definition">Definition at line <a class="el" href="a00467_source.html#l00283">283</a> of file <a class="el" href="a00467_source.html">regex.tcc</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#ac1a97012352a2ccef114895cfb08307c">◆ </a></span>lookup_collatename()</h2>
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template<typename _Ch_type > </div>
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template<typename _Fwd_iter > </div>
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<td class="memname"><a class="el" href="a06699.html">regex_traits</a>< _Ch_type >::<a class="el" href="a04771.html">string_type</a> <a class="el" href="a06699.html">std::regex_traits</a>< _Ch_type >::lookup_collatename </td>
<td>(</td>
<td class="paramtype">_Fwd_iter </td>
<td class="paramname"><em>__first</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">_Fwd_iter </td>
<td class="paramname"><em>__last</em> </td>
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<td></td>
<td>)</td>
<td></td><td> const</td>
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<p>Gets a collation element by name. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">__first</td><td>beginning of the collation element name. </td></tr>
<tr><td class="paramname">__last</td><td>one-past-the-end of the collation element name.</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>a sequence of one or more characters that represents the collating element consisting of the character sequence designated by the iterator range [__first, __last). Returns an empty string if the character sequence is not a valid collating element. </dd></dl>
<p class="definition">Definition at line <a class="el" href="a00467_source.html#l00127">127</a> of file <a class="el" href="a00467_source.html">regex.tcc</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#af4d286d995ec6ff200854960c15b78c8">◆ </a></span>transform()</h2>
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<td class="memname"><a class="el" href="a04771.html">string_type</a> <a class="el" href="a06699.html">std::regex_traits</a>< _Ch_type >::transform </td>
<td>(</td>
<td class="paramtype">_Fwd_iter </td>
<td class="paramname"><em>__first</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">_Fwd_iter </td>
<td class="paramname"><em>__last</em> </td>
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<td></td>
<td>)</td>
<td></td><td> const</td>
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<p>Gets a sort key for a character sequence. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">__first</td><td>beginning of the character sequence. </td></tr>
<tr><td class="paramname">__last</td><td>one-past-the-end of the character sequence.</td></tr>
</table>
</dd>
</dl>
<p>Returns a sort key for the character sequence designated by the iterator range [F1, F2) such that if the character sequence [G1, G2) sorts before the character sequence [H1, H2) then v.transform(G1, G2) < v.transform(H1, H2).</p>
<p>What this really does is provide a more efficient way to compare a string to multiple other strings in locales with fancy collation rules and equivalence classes.</p>
<dl class="section return"><dt>Returns</dt><dd>a locale-specific sort key equivalent to the input range.</dd></dl>
<dl class="exception"><dt>Exceptions</dt><dd>
<table class="exception">
<tr><td class="paramname">std::bad_cast</td><td>if the current locale does not have a collate facet. </td></tr>
</table>
</dd>
</dl>
<p class="definition">Definition at line <a class="el" href="a00464_source.html#l00224">224</a> of file <a class="el" href="a00464_source.html">regex.h</a>.</p>
<p class="reference">Referenced by <a class="el" href="a00464_source.html#l00248">std::regex_traits< _CharType >::transform_primary()</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a31b5b84c5919d3fd0658cf8c18df0160">◆ </a></span>transform_primary()</h2>
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<td class="memname"><a class="el" href="a04771.html">string_type</a> <a class="el" href="a06699.html">std::regex_traits</a>< _Ch_type >::transform_primary </td>
<td>(</td>
<td class="paramtype">_Fwd_iter </td>
<td class="paramname"><em>__first</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">_Fwd_iter </td>
<td class="paramname"><em>__last</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td> const</td>
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<p>Gets a sort key for a character sequence, independent of case. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">__first</td><td>beginning of the character sequence. </td></tr>
<tr><td class="paramname">__last</td><td>one-past-the-end of the character sequence.</td></tr>
</table>
</dd>
</dl>
<p>Effects: if typeid(use_facet<collate<_Ch_type> >) == typeid(collate_byname<_Ch_type>) and the form of the sort key returned by collate_byname<_Ch_type>::transform(__first, __last) is known and can be converted into a primary sort key then returns that key, otherwise returns an empty string.</p>
<dl class="todo"><dt><b><a class="el" href="a01460.html#_todo000002">Todo:</a></b></dt><dd>Implement this function correctly. </dd></dl>
<p class="definition">Definition at line <a class="el" href="a00464_source.html#l00248">248</a> of file <a class="el" href="a00464_source.html">regex.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a001a4c2c5d9b06d4cc7e9a83310255c4">◆ </a></span>translate()</h2>
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<td class="memname">char_type <a class="el" href="a06699.html">std::regex_traits</a>< _Ch_type >::translate </td>
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<td class="paramname"><em>__c</em></td><td>)</td>
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<p>Performs the identity translation. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">__c</td><td>A character to the locale-specific character set.</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>__c. </dd></dl>
<p class="definition">Definition at line <a class="el" href="a00464_source.html#l00182">182</a> of file <a class="el" href="a00464_source.html">regex.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#aa92edaaafe63f2333dc9d1ce9167c0f3">◆ </a></span>translate_nocase()</h2>
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<td class="memname">char_type <a class="el" href="a06699.html">std::regex_traits</a>< _Ch_type >::translate_nocase </td>
<td>(</td>
<td class="paramtype">char_type </td>
<td class="paramname"><em>__c</em></td><td>)</td>
<td> const</td>
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<p>Translates a character into a case-insensitive equivalent. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">__c</td><td>A character to the locale-specific character set.</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>the locale-specific lower-case equivalent of __c. </dd></dl>
<dl class="exception"><dt>Exceptions</dt><dd>
<table class="exception">
<tr><td class="paramname">std::bad_cast</td><td>if the imbued locale does not support the ctype facet. </td></tr>
</table>
</dd>
</dl>
<p class="definition">Definition at line <a class="el" href="a00464_source.html#l00195">195</a> of file <a class="el" href="a00464_source.html">regex.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a5b1afcb8b3cb7d323dfb6fc8db08310a">◆ </a></span>value()</h2>
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<td>(</td>
<td class="paramtype">_Ch_type </td>
<td class="paramname"><em>__ch</em>, </td>
</tr>
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<td class="paramkey"></td>
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<td class="paramtype">int </td>
<td class="paramname"><em>__radix</em> </td>
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<td></td><td> const</td>
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<p>Converts a digit to an int. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">__ch</td><td>a character representing a digit. </td></tr>
<tr><td class="paramname">__radix</td><td>the radix if the numeric conversion (limited to 8, 10, or 16).</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>the value represented by the digit __ch in base radix if the character __ch is a valid digit in base radix; otherwise returns -1. </dd></dl>
<p class="definition">Definition at line <a class="el" href="a00467_source.html#l00341">341</a> of file <a class="el" href="a00467_source.html">regex.tcc</a>.</p>
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<hr/>The documentation for this class was generated from the following files:<ul>
<li><a class="el" href="a00464_source.html">regex.h</a></li>
<li><a class="el" href="a00467_source.html">regex.tcc</a></li>
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