regex_traits 类

2015-06-09

描述元素的特性匹配。

template<class Elem>
    struct regex_traits {
    regex_traits();

    static size_type length(const char_type *str);
    char_type translate(char_type ch) const;
    char_type translate_nocase(char_type ch) const;
    template<class FwdIt>
        string_type transform(FwdIt first, FwdIt last) const;
    template<class FwdIt>
        string_type transform_primary(FwdIt first, FwdIt last) const;
    template<class FwdIt>
        char_class_type lookup_classname(FwdIt first, FwdIt last) const;
    template<class FwdIt>
        string_type lookup_collatename(FwdIt first, FwdIt last) const;
    bool isctype(char_type ch, char_class_type cls) const;
    int value(Elem ch, int base) const;
    locale_type imbue(locale_type loc);
    locale_type getloc() const;

    typedef Elem char_type;
    typedef T6 size_type;
    typedef basic_string<Elem> string_type;
    typedef T7 locale_type;
    typedef T8 char_class_type;
    };