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<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> <title>Struct template null_regex_traits</title> <link rel="stylesheet" href="../../../../doc/src/boostbook.css" type="text/css"> <meta name="generator" content="DocBook XSL Stylesheets V1.78.1"> <link rel="home" href="../../index.html" title="The Boost C++ Libraries BoostBook Documentation Subset"> <link rel="up" href="../../xpressive/reference.html#header.boost.xpressive.xpressive_fwd_hpp" title="Header <boost/xpressive/xpressive_fwd.hpp>"> <link rel="prev" href="c_regex_traits.html" title="Struct template c_regex_traits"> <link rel="next" href="basic_regex.html" title="Struct template basic_regex"> </head> <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> <table cellpadding="2" width="100%"><tr> <td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../boost.png"></td> <td align="center"><a href="../../../../index.html">Home</a></td> 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boost::xpressive::null_regex_traits — stub <a class="link" href="regex_traits.html" title="Struct template regex_traits">regex_traits</a> for non-char data </div> <h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2> <div xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv"><pre class="synopsis">// In header: <<a class="link" href="../../xpressive/reference.html#header.boost.xpressive.xpressive_fwd_hpp" title="Header <boost/xpressive/xpressive_fwd.hpp>">boost/xpressive/xpressive_fwd.hpp</a>> template<typename Elem> struct <a class="link" href="null_regex_traits.html" title="Struct template null_regex_traits">null_regex_traits</a> { // <a class="link" href="null_regex_traits.html#boost.xpressive.null_regex_traitsconstruct-copy-destruct">construct/copy/destruct</a> <a class="link" href="null_regex_traits.html#idp356699584-bb">null_regex_traits</a>(locale_type = locale_type()); // <a class="link" href="null_regex_traits.html#idp356687600-bb">public member functions</a> bool <a class="link" href="null_regex_traits.html#idp356688160-bb">operator==</a>(<a class="link" href="null_regex_traits.html" title="Struct template null_regex_traits">null_regex_traits</a>< char_type > const &) const; bool <a class="link" href="null_regex_traits.html#idp356692112-bb">operator!=</a>(<a class="link" href="null_regex_traits.html" title="Struct template null_regex_traits">null_regex_traits</a>< char_type > const &) const; char_type <a class="link" href="null_regex_traits.html#idp356696064-bb">widen</a>(char) const; // <a class="link" href="null_regex_traits.html#idp356702000-bb">public static functions</a> static unsigned char <a class="link" href="null_regex_traits.html#idp356702560-bb">hash</a>(char_type); static char_type <a class="link" href="null_regex_traits.html#idp356705984-bb">translate</a>(char_type); static char_type <a class="link" href="null_regex_traits.html#idp356709328-bb">translate_nocase</a>(char_type); static bool <a class="link" href="null_regex_traits.html#idp356712672-bb">in_range</a>(char_type, char_type, char_type); static bool <a class="link" href="null_regex_traits.html#idp356718320-bb">in_range_nocase</a>(char_type, char_type, char_type); template<typename FwdIter> static string_type <a class="link" href="null_regex_traits.html#idp356725328-bb">transform</a>(FwdIter, FwdIter); template<typename FwdIter> static string_type <a class="link" href="null_regex_traits.html#idp356730000-bb">transform_primary</a>(FwdIter, FwdIter); template<typename FwdIter> static string_type <a class="link" href="null_regex_traits.html#idp356734720-bb">lookup_collatename</a>(FwdIter, FwdIter); template<typename FwdIter> static char_class_type <a class="link" href="null_regex_traits.html#idp356739408-bb">lookup_classname</a>(FwdIter, FwdIter, bool); static bool <a class="link" href="null_regex_traits.html#idp356746624-bb">isctype</a>(char_type, char_class_type); static int <a class="link" href="null_regex_traits.html#idp356751856-bb">value</a>(char_type, int); static locale_type <a class="link" href="null_regex_traits.html#idp356757088-bb">imbue</a>(locale_type); static locale_type <a class="link" href="null_regex_traits.html#idp356760432-bb">getloc</a>(); };</pre></div> <div class="refsect1"> <a name="idp540192368"></a><h2>Description</h2> <div class="refsect2"> <a name="idp540192784"></a><h3> <a name="boost.xpressive.null_regex_traitsconstruct-copy-destruct"></a><code class="computeroutput">null_regex_traits</code> public construct/copy/destruct</h3> <div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"> <pre class="literallayout"><a name="idp356699584-bb"></a>null_regex_traits(locale_type = locale_type());</pre> Initialize a <code class="computeroutput"><a class="link" href="null_regex_traits.html" title="Struct template null_regex_traits">null_regex_traits</a></code> object. </li></ol></div> </div> <div class="refsect2"> <a name="idp540203392"></a><h3> <a name="idp356687600-bb"></a><code class="computeroutput">null_regex_traits</code> public member functions</h3> <div class="orderedlist"><ol class="orderedlist" type="1"> <li class="listitem"> <pre class="literallayout">bool <a name="idp356688160-bb"></a>operator==(<a class="link" href="null_regex_traits.html" title="Struct template null_regex_traits">null_regex_traits</a>< char_type > const & that) const;</pre> Checks two <code class="computeroutput"><a class="link" href="null_regex_traits.html" title="Struct template null_regex_traits">null_regex_traits</a></code> objects for equality <div class="variablelist"><table border="0" class="variablelist compact"> <colgroup> <col align="left" valign="top"> <col> </colgroup> <tbody><tr> <td>Returns:</td> <td>true. </td> </tr></tbody> </table></div> </li> <li class="listitem"> <pre class="literallayout">bool <a name="idp356692112-bb"></a>operator!=(<a class="link" href="null_regex_traits.html" title="Struct template null_regex_traits">null_regex_traits</a>< char_type > const & that) const;</pre> Checks two <code class="computeroutput"><a class="link" href="null_regex_traits.html" title="Struct template null_regex_traits">null_regex_traits</a></code> objects for inequality <div class="variablelist"><table border="0" class="variablelist compact"> <colgroup> <col align="left" valign="top"> <col> </colgroup> <tbody><tr> <td>Returns:</td> <td>false. </td> </tr></tbody> </table></div> </li> <li class="listitem"> <pre class="literallayout">char_type <a name="idp356696064-bb"></a>widen(char ch) const;</pre> Convert a char to a Elem <div class="variablelist"><table border="0" class="variablelist compact"> <colgroup> <col align="left" valign="top"> <col> </colgroup> <tbody> <tr> <td>Parameters:</td> <td><div class="variablelist"><table border="0" class="variablelist compact"> <colgroup> <col align="left" valign="top"> <col> </colgroup> <tbody><tr> <td><code class="computeroutput">ch</code></td> <td>The source character. </td> </tr></tbody> </table></div></td> </tr> <tr> <td>Returns:</td> <td>Elem(ch). </td> </tr> </tbody> </table></div> </li> </ol></div> </div> <div class="refsect2"> <a name="idp540241424"></a><h3> <a name="idp356702000-bb"></a><code class="computeroutput">null_regex_traits</code> public static functions</h3> <div class="orderedlist"><ol class="orderedlist" type="1"> <li class="listitem"> <pre class="literallayout">static unsigned char <a name="idp356702560-bb"></a>hash(char_type ch);</pre> Returns a hash value for a Elem in the range [0, UCHAR_MAX] <div class="variablelist"><table border="0" class="variablelist compact"> <colgroup> <col align="left" valign="top"> <col> </colgroup> <tbody> <tr> <td>Parameters:</td> <td><div class="variablelist"><table border="0" class="variablelist compact"> <colgroup> <col align="left" valign="top"> <col> </colgroup> <tbody><tr> <td><code class="computeroutput">ch</code></td> <td>The source character. </td> </tr></tbody> </table></div></td> </tr> <tr> <td>Returns:</td> <td>a value between 0 and UCHAR_MAX, inclusive. </td> </tr> </tbody> </table></div> </li> <li class="listitem"> <pre class="literallayout">static char_type <a name="idp356705984-bb"></a>translate(char_type ch);</pre> No-op <div class="variablelist"><table border="0" class="variablelist compact"> <colgroup> <col align="left" valign="top"> <col> </colgroup> <tbody> <tr> <td>Parameters:</td> <td><div class="variablelist"><table border="0" class="variablelist compact"> <colgroup> <col align="left" valign="top"> <col> </colgroup> <tbody><tr> <td><code class="computeroutput">ch</code></td> <td>The source character. </td> </tr></tbody> </table></div></td> </tr> <tr> <td>Returns:</td> <td>ch </td> </tr> </tbody> </table></div> </li> <li class="listitem"> <pre class="literallayout">static char_type <a name="idp356709328-bb"></a>translate_nocase(char_type ch);</pre> No-op <div class="variablelist"><table border="0" class="variablelist compact"> <colgroup> <col align="left" valign="top"> <col> </colgroup> <tbody> <tr> <td>Parameters:</td> <td><div class="variablelist"><table border="0" class="variablelist compact"> <colgroup> <col align="left" valign="top"> <col> </colgroup> <tbody><tr> <td><code class="computeroutput">ch</code></td> <td>The source character. </td> </tr></tbody> </table></div></td> </tr> <tr> <td>Returns:</td> <td>ch </td> </tr> </tbody> </table></div> </li> <li class="listitem"> <pre class="literallayout">static bool <a name="idp356712672-bb"></a>in_range(char_type first, char_type last, char_type ch);</pre> Checks to see if a character is within a character range. <div class="variablelist"><table border="0" class="variablelist compact"> <colgroup> <col align="left" valign="top"> <col> </colgroup> <tbody> <tr> <td>Parameters:</td> <td><div class="variablelist"><table border="0" class="variablelist compact"> <colgroup> <col align="left" valign="top"> <col> </colgroup> <tbody> <tr> <td><code class="computeroutput">ch</code></td> <td>The source character. </td> </tr> <tr> <td><code class="computeroutput">first</code></td> <td>The bottom of the range, inclusive. </td> </tr> <tr> <td><code class="computeroutput">last</code></td> <td>The top of the range, inclusive. </td> </tr> </tbody> </table></div></td> </tr> <tr> <td>Returns:</td> <td>first <= ch && ch <= last. </td> </tr> </tbody> </table></div> </li> <li class="listitem"> <pre class="literallayout">static bool <a name="idp356718320-bb"></a>in_range_nocase(char_type first, char_type last, char_type ch);</pre> Checks to see if a character is within a character range. <div class="note"><table border="0" summary="Note"> <tr> <td rowspan="2" align="center" valign="top" width="25"><img alt="[Note]" src="../../../../doc/src/images/note.png"></td> <th align="left">Note</th> </tr> <tr><td align="left" valign="top">Since the <code class="computeroutput"><a class="link" href="null_regex_traits.html" title="Struct template null_regex_traits">null_regex_traits</a></code> does not do case-folding, this function is equivalent to in_range(). </td></tr> </table></div> <div class="variablelist"><table border="0" class="variablelist compact"> <colgroup> <col align="left" valign="top"> <col> </colgroup> <tbody> <tr> <td>Parameters:</td> <td><div class="variablelist"><table border="0" class="variablelist compact"> <colgroup> <col align="left" valign="top"> <col> </colgroup> <tbody> <tr> <td><code class="computeroutput">ch</code></td> <td>The source character. </td> </tr> <tr> <td><code class="computeroutput">first</code></td> <td>The bottom of the range, inclusive. </td> </tr> <tr> <td><code class="computeroutput">last</code></td> <td>The top of the range, inclusive. </td> </tr> </tbody> </table></div></td> </tr> <tr> <td>Returns:</td> <td>first <= ch && ch <= last. </td> </tr> </tbody> </table></div> </li> <li class="listitem"> <pre class="literallayout">template<typename FwdIter> static string_type <a name="idp356725328-bb"></a>transform(FwdIter begin, FwdIter end);</pre> 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). <div class="note"><table border="0" summary="Note"> <tr> <td rowspan="2" align="center" valign="top" width="25"><img alt="[Note]" src="../../../../doc/src/images/note.png"></td> <th align="left">Note</th> </tr> <tr><td align="left" valign="top">Not currently used </td></tr> </table></div> </li> <li class="listitem"> <pre class="literallayout">template<typename FwdIter> static string_type <a name="idp356730000-bb"></a>transform_primary(FwdIter begin, FwdIter end);</pre> 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) when character case is not considered then v.transform_primary(G1, G2) < v.transform_primary(H1, H2). <div class="note"><table border="0" summary="Note"> <tr> <td rowspan="2" align="center" valign="top" width="25"><img alt="[Note]" src="../../../../doc/src/images/note.png"></td> <th align="left">Note</th> </tr> <tr><td align="left" valign="top">Not currently used </td></tr> </table></div> </li> <li class="listitem"> <pre class="literallayout">template<typename FwdIter> static string_type <a name="idp356734720-bb"></a>lookup_collatename(FwdIter begin, FwdIter end);</pre> Returns a sequence of characters that represents the collating element consisting of the character sequence designated by the iterator range [F1, F2). Returns an empty string if the character sequence is not a valid collating element. <div class="note"><table border="0" summary="Note"> <tr> <td rowspan="2" align="center" valign="top" width="25"><img alt="[Note]" src="../../../../doc/src/images/note.png"></td> <th align="left">Note</th> </tr> <tr><td align="left" valign="top">Not currently used </td></tr> </table></div> </li> <li class="listitem"> <pre class="literallayout">template<typename FwdIter> static char_class_type <a name="idp356739408-bb"></a>lookup_classname(FwdIter begin, FwdIter end, bool icase);</pre> The <code class="computeroutput"><a class="link" href="null_regex_traits.html" title="Struct template null_regex_traits">null_regex_traits</a></code> does not have character classifications, so lookup_classname() is unused. <div class="variablelist"><table border="0" class="variablelist compact"> <colgroup> <col align="left" valign="top"> <col> </colgroup> <tbody> <tr> <td>Parameters:</td> <td><div class="variablelist"><table border="0" class="variablelist compact"> <colgroup> <col align="left" valign="top"> <col> </colgroup> <tbody> <tr> <td><code class="computeroutput">begin</code></td> <td>not used </td> </tr> <tr> <td><code class="computeroutput">end</code></td> <td>not used </td> </tr> <tr> <td><code class="computeroutput">icase</code></td> <td>not used </td> </tr> </tbody> </table></div></td> </tr> <tr> <td>Returns:</td> <td>static_cast<char_class_type>(0) </td> </tr> </tbody> </table></div> </li> <li class="listitem"> <pre class="literallayout">static bool <a name="idp356746624-bb"></a>isctype(char_type ch, char_class_type mask);</pre> The <code class="computeroutput"><a class="link" href="null_regex_traits.html" title="Struct template null_regex_traits">null_regex_traits</a></code> does not have character classifications, so isctype() is unused. <div class="variablelist"><table border="0" class="variablelist compact"> <colgroup> <col align="left" valign="top"> <col> </colgroup> <tbody> <tr> <td>Parameters:</td> <td><div class="variablelist"><table border="0" class="variablelist compact"> <colgroup> <col align="left" valign="top"> <col> </colgroup> <tbody> <tr> <td><code class="computeroutput">ch</code></td> <td>not used </td> </tr> <tr> <td><code class="computeroutput">mask</code></td> <td>not used </td> </tr> </tbody> </table></div></td> </tr> <tr> <td>Returns:</td> <td>false </td> </tr> </tbody> </table></div> </li> <li class="listitem"> <pre class="literallayout">static int <a name="idp356751856-bb"></a>value(char_type ch, int radix);</pre> The <code class="computeroutput"><a class="link" href="null_regex_traits.html" title="Struct template null_regex_traits">null_regex_traits</a></code> recognizes no elements as digits, so value() is unused. <div class="variablelist"><table border="0" class="variablelist compact"> <colgroup> <col align="left" valign="top"> <col> </colgroup> <tbody> <tr> <td>Parameters:</td> <td><div class="variablelist"><table border="0" class="variablelist compact"> <colgroup> <col align="left" valign="top"> <col> </colgroup> <tbody> <tr> <td><code class="computeroutput">ch</code></td> <td>not used </td> </tr> <tr> <td><code class="computeroutput">radix</code></td> <td>not used </td> </tr> </tbody> </table></div></td> </tr> <tr> <td>Returns:</td> <td>-1 </td> </tr> </tbody> </table></div> </li> <li class="listitem"> <pre class="literallayout">static locale_type <a name="idp356757088-bb"></a>imbue(locale_type loc);</pre> Not used <div class="variablelist"><table border="0" class="variablelist compact"> <colgroup> <col align="left" valign="top"> <col> </colgroup> <tbody> <tr> <td>Parameters:</td> <td><div class="variablelist"><table border="0" class="variablelist compact"> <colgroup> <col align="left" valign="top"> <col> </colgroup> <tbody><tr> <td><code class="computeroutput">loc</code></td> <td>not used </td> </tr></tbody> </table></div></td> </tr> <tr> <td>Returns:</td> <td>loc </td> </tr> </tbody> </table></div> </li> <li class="listitem"> <pre class="literallayout">static locale_type <a name="idp356760432-bb"></a>getloc();</pre> Returns locale_type(). <div class="variablelist"><table border="0" class="variablelist compact"> <colgroup> <col align="left" valign="top"> <col> </colgroup> <tbody><tr> <td>Returns:</td> <td>locale_type() </td> </tr></tbody> </table></div> </li> </ol></div> </div> </div> </div> <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> <td align="left"></td> <td align="right"><div class="copyright-footer">Copyright © 2007 Eric Niebler Distributed under the Boost Software License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) </div></td> </tr></table> <hr> <div class="spirit-nav"> <a accesskey="p" href="c_regex_traits.html"><img src="../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../../xpressive/reference.html#header.boost.xpressive.xpressive_fwd_hpp"><img src="../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="basic_regex.html"><img src="../../../../doc/src/images/next.png" alt="Next"></a> </div> </body> </html>