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| <div class="titlepage"><div><div><h3 class="title"> |
| <a name="boost_regex.ref.regex_traits"></a><a class="link" href="regex_traits.html" title="regex_traits"> regex_traits</a> |
| </h3></div></div></div> |
| <pre class="programlisting"><span class="keyword">namespace</span> <span class="identifier">boost</span><span class="special">{</span> |
| |
| <span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">charT</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">implementationT</span> <span class="special">=</span> <span class="identifier">sensible_default_choice</span><span class="special">></span> |
| <span class="keyword">struct</span> <span class="identifier">regex_traits</span> <span class="special">:</span> <span class="keyword">public</span> <span class="identifier">implementationT</span> |
| <span class="special">{</span> |
| <span class="identifier">regex_traits</span><span class="special">()</span> <span class="special">:</span> <span class="identifier">implementationT</span><span class="special">()</span> <span class="special">{}</span> |
| <span class="special">};</span> |
| |
| <span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">charT</span><span class="special">></span> |
| <span class="keyword">struct</span> <span class="identifier">c_regex_traits</span><span class="special">;</span> |
| |
| <span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">charT</span><span class="special">></span> |
| <span class="keyword">class</span> <span class="identifier">cpp_regex_traits</span><span class="special">;</span> |
| |
| <span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">charT</span><span class="special">></span> |
| <span class="keyword">class</span> <span class="identifier">w32_regex_traits</span><span class="special">;</span> |
| |
| <span class="special">}</span> <span class="comment">// namespace boost |
| </span></pre> |
| <a name="boost_regex.ref.regex_traits.description"></a><h5> |
| <a name="id1023129"></a> |
| <a class="link" href="regex_traits.html#boost_regex.ref.regex_traits.description">Description</a> |
| </h5> |
| <p> |
| The class <code class="computeroutput"><span class="identifier">regex_traits</span></code> is |
| just a thin wrapper around an actual implemention class, which may be one |
| of: |
| </p> |
| <div class="itemizedlist"><ul type="disc"> |
| <li> |
| <code class="computeroutput"><span class="identifier">c_regex_traits</span></code>: this |
| class is deprecated, it wraps the C locale, and is used as the default |
| implementation when the platform is not Win32, and the C++ locale is |
| not available. |
| </li> |
| <li> |
| <code class="computeroutput"><span class="identifier">cpp_regex_traits</span></code>: the |
| default traits class for non-Win32 platforms, allows the regex class |
| to be imbued with a std::locale instance. |
| </li> |
| <li> |
| <code class="computeroutput"><span class="identifier">w32_regex_traits</span></code>: the |
| default traits class implementation on Win32 platforms, allows the regex |
| class to be imbued with an LCID. |
| </li> |
| </ul></div> |
| <p> |
| The default behavior can be altered by defining one of the following configuration |
| macros in <a href="../../../../../../boost/regex/user.hpp" target="_top">boost/regex/user.hpp</a> |
| </p> |
| <div class="itemizedlist"><ul type="disc"> |
| <li> |
| BOOST_REGEX_USE_C_LOCALE: makes <code class="computeroutput"><span class="identifier">c_regex_traits</span></code> |
| the default. |
| </li> |
| <li> |
| BOOST_REGEX_USE_CPP_LOCALE: makes <code class="computeroutput"><span class="identifier">cpp_regex_traits</span></code> |
| the default. |
| </li> |
| </ul></div> |
| <p> |
| All these traits classes fulfil the <a class="link" href="concepts/traits_concept.html" title="Traits Class Requirements">traits |
| class requirements</a>. |
| </p> |
| </div> |
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| <td align="left"></td> |
| <td align="right"><div class="copyright-footer">Copyright © 1998 -2010 John Maddock<p> |
| 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>) |
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