[locale.ctype.general] (original) (raw)

28 Text processing library [text]

28.3 Localization library [localization]

28.3.4 Standard locale categories [locale.categories]

28.3.4.2 The ctype category [category.ctype]

28.3.4.2.2 Class template ctype [locale.ctype]

28.3.4.2.2.1 General [locale.ctype.general]

namespace std { template<class charT> class ctype : public locale::facet, public ctype_base { public: using char_type = charT;explicit ctype(size_t refs = 0);bool is(mask m, charT c) const;const charT* is(const charT* low, const charT* high, mask* vec) const;const charT* scan_is(mask m, const charT* low, const charT* high) const;const charT* scan_not(mask m, const charT* low, const charT* high) const; charT toupper(charT c) const;const charT* toupper(charT* low, const charT* high) const; charT tolower(charT c) const;const charT* tolower(charT* low, const charT* high) const; charT widen(char c) const;const char* widen(const char* low, const char* high, charT* to) const;char narrow(charT c, char dfault) const;const charT* narrow(const charT* low, const charT* high, char dfault, char* to) const;static locale::id id;protected: ~ctype();virtual bool do_is(mask m, charT c) const;virtual const charT* do_is(const charT* low, const charT* high, mask* vec) const;virtual const charT* do_scan_is(mask m, const charT* low, const charT* high) const;virtual const charT* do_scan_not(mask m, const charT* low, const charT* high) const;virtual charT do_toupper(charT) const;virtual const charT* do_toupper(charT* low, const charT* high) const;virtual charT do_tolower(charT) const;virtual const charT* do_tolower(charT* low, const charT* high) const;virtual charT do_widen(char) const;virtual const char* do_widen(const char* low, const char* high, charT* dest) const;virtual char do_narrow(charT, char dfault) const;virtual const charT* do_narrow(const charT* low, const charT* high,char dfault, char* dest) const;};}

Class ctype encapsulates the C library features.

istream members are required to use ctype<>for character classing during input parsing.

The specializations required in Table 89 ([locale.category]), namely ctype<char> and ctype<wchar_t>, implement character classing appropriate to the implementation's native character set.