forked from boostorg/regex
43 lines
1.4 KiB
Plaintext
43 lines
1.4 KiB
Plaintext
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[section:regex_traits regex_traits]
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namespace boost{
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template <class charT, class implementationT = sensible_default_choice>
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struct regex_traits : public implementationT
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{
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regex_traits() : implementationT() {}
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};
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template <class charT>
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struct c_regex_traits;
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template <class charT>
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struct cpp_regex_traits;
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template <class charT>
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struct w32_regex_traits;
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} // namespace boost
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[h4 Description]
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The class `regex_traits` is just a thin wrapper around an actual implemention
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class, which may be one of:
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* `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.
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* `cpp_regex_traits`: the default traits class for non-Win32 platforms, allows the regex class to be imbued with a std::locale instance.
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* `w32_regex_traits`: the default traits class implementation on Win32 platforms, allows the regex class to be imbued with an LCID.
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The default behavior can be altered by defining one of the following
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configuration macros in
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[@../../../../boost/regex/user.hpp boost/regex/user.hpp]
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* BOOST_REGEX_USE_C_LOCALE: makes `c_regex_traits` the default.
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* BOOST_REGEX_USE_CPP_LOCALE: makes `cpp_regex_traits` the default.
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All these traits classes fulfil the
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[link boost_regex.ref.concepts.traits_concept traits class requirements].
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[endsect]
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