| [/ |
| Copyright 2006-2007 John Maddock. |
| Distributed under the Boost Software License, Version 1.0. |
| (See accompanying file LICENSE_1_0.txt or copy at |
| http://www.boost.org/LICENSE_1_0.txt). |
| ] |
| |
| |
| [section:regex_traits regex_traits] |
| |
| namespace boost{ |
| |
| template <class charT, class implementationT = sensible_default_choice> |
| struct regex_traits : public implementationT |
| { |
| regex_traits() : implementationT() {} |
| }; |
| |
| template <class charT> |
| struct c_regex_traits; |
| |
| template <class charT> |
| class cpp_regex_traits; |
| |
| template <class charT> |
| class w32_regex_traits; |
| |
| } // namespace boost |
| |
| [h4 Description] |
| |
| The class `regex_traits` is just a thin wrapper around an actual implemention |
| class, which may be one of: |
| |
| * `c_regex_traits`: 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. |
| * `cpp_regex_traits`: the default traits class for non-Win32 platforms, allows the regex class to be imbued with a std::locale instance. |
| * `w32_regex_traits`: the default traits class implementation on Win32 platforms, allows the regex class to be imbued with an LCID. |
| |
| The default behavior can be altered by defining one of the following |
| configuration macros in |
| [@../../../../boost/regex/user.hpp boost/regex/user.hpp] |
| |
| * BOOST_REGEX_USE_C_LOCALE: makes `c_regex_traits` the default. |
| * BOOST_REGEX_USE_CPP_LOCALE: makes `cpp_regex_traits` the default. |
| |
| All these traits classes fulfil the |
| [link boost_regex.ref.concepts.traits_concept traits class requirements]. |
| |
| [endsect] |
| |