3.5 KiB
[stringstream.general]
31 Input/output library [input.output]
31.8 String-based streams [string.streams]
31.8.5 Class template basic_stringstream [stringstream]
31.8.5.1 General [stringstream.general]
namespace std {template<class charT, class traits = char_traits, class Allocator = allocator>class basic_stringstream : public basic_iostream<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; // [stringstream.cons], constructors basic_stringstream() : basic_stringstream(ios_base::out | ios_base::in) {}explicit basic_stringstream(ios_base::openmode which); explicit basic_stringstream(const basic_string<charT, traits, Allocator>& s, ios_base::openmode which = ios_base::out | ios_base::in); basic_stringstream(ios_base::openmode which, const Allocator& a); explicit basic_stringstream( basic_string<charT, traits, Allocator>&& s, ios_base::openmode which = ios_base::out | ios_base::in); template basic_stringstream(const basic_string<charT, traits, SAlloc>& s, const Allocator& a): basic_stringstream(s, ios_base::out | ios_base::in, a) {}template basic_stringstream(const basic_string<charT, traits, SAlloc>& s, ios_base::openmode which, const Allocator& a); templateexplicit basic_stringstream(const basic_string<charT, traits, SAlloc>& s, ios_base::openmode which = ios_base::out | ios_base::in); templateexplicit basic_stringstream(const T& t, ios_base::openmode which = ios_base::out | ios_base::in); template basic_stringstream(const T& t, const Allocator& a); template basic_stringstream(const T& t, ios_base::openmode which, const Allocator& a); basic_stringstream(const basic_stringstream&) = delete; basic_stringstream(basic_stringstream&& rhs);
basic_stringstream& operator=(const basic_stringstream&) = delete; basic_stringstream& operator=(basic_stringstream&& rhs); // [stringstream.swap], swapvoid swap(basic_stringstream& rhs); // [stringstream.members], members basic_stringbuf<charT, traits, Allocator>* rdbuf() const;
basic_string<charT, traits, Allocator> str() const &; template 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); templatevoid str(const basic_string<charT, traits, SAlloc>& s); void str(basic_string<charT, traits, Allocator>&& s); templatevoid str(const T& t); private: basic_stringbuf<charT, traits, Allocator> sb; // exposition only};}
The class templatebasic_stringstream<charT, traits> supports reading and writing from objects of classbasic_string<charT, traits, Allocator>.
It uses abasic_stringbuf<charT, traits, Allocator> object to control the associated sequence.
For the sake of exposition, the maintained data is presented here as
sb, the stringbuf object.