[istringstream.general] (original) (raw)

31 Input/output library [input.output]

31.8 String-based streams [string.streams]

31.8.3 Class template basic_istringstream [istringstream]

31.8.3.1 General [istringstream.general]

namespace std { template<class charT, class traits = char_traits<charT>,class Allocator = allocator<charT>> class basic_istringstream : public basic_istream<charT, traits> { public: using char_type = charT;using int_type = typename traits::int_type;using pos_type = typename traits::pos_type;using off_type = typename traits::off_type;using traits_type = traits;using allocator_type = Allocator; basic_istringstream() : basic_istringstream(ios_base::in) {} explicit basic_istringstream(ios_base::openmode which);explicit basic_istringstream( const basic_string<charT, traits, Allocator>& s, ios_base::openmode which = ios_base::in); basic_istringstream(ios_base::openmode which, const Allocator& a);explicit basic_istringstream( basic_string<charT, traits, Allocator>&& s, ios_base::openmode which = ios_base::in);template<class SAlloc> basic_istringstream( const basic_string<charT, traits, SAlloc>& s, const Allocator& a) : basic_istringstream(s, ios_base::in, a) {} template<class SAlloc> basic_istringstream( const basic_string<charT, traits, SAlloc>& s, ios_base::openmode which, const Allocator& a);template<class SAlloc> explicit basic_istringstream( const basic_string<charT, traits, SAlloc>& s, ios_base::openmode which = ios_base::in);template<class T> explicit basic_istringstream(const T& t, ios_base::openmode which = ios_base::in);template<class T> basic_istringstream(const T& t, const Allocator& a);template<class T> basic_istringstream(const T& t, ios_base::openmode which, const Allocator& a); basic_istringstream(const basic_istringstream&) = delete; basic_istringstream(basic_istringstream&& rhs); basic_istringstream& operator=(const basic_istringstream&) = delete; basic_istringstream& operator=(basic_istringstream&& rhs);void swap(basic_istringstream& rhs); basic_stringbuf<charT, traits, Allocator>* rdbuf() const; basic_string<charT, traits, Allocator> str() const &;template<class SAlloc> basic_string<charT,traits,SAlloc> str(const SAlloc& sa) const; basic_string<charT, traits, Allocator> str() &&; basic_string_view<charT, traits> view() const noexcept;void str(const basic_string<charT, traits, Allocator>& s);template<class SAlloc> void str(const basic_string<charT, traits, SAlloc>& s);void str(basic_string<charT, traits, Allocator>&& s);template<class T> void str(const T& t);private: basic_stringbuf<charT, traits, Allocator> sb; };}

The classbasic_istringstream<charT, traits, Allocator>supports reading objects of classbasic_string<​charT, traits, Allocator>.

It uses abasic_stringbuf<charT, traits, Allocator>object to control the associated storage.

For the sake of exposition, the maintained data is presented here as: