33 #ifndef _GLIBCXX_ISTREAM
34 #define _GLIBCXX_ISTREAM 1
36 #pragma GCC system_header
41 namespace std _GLIBCXX_VISIBILITY(default)
43 _GLIBCXX_BEGIN_NAMESPACE_VERSION
57 template<
typename _CharT,
typename _Traits>
62 typedef _CharT char_type;
63 typedef typename _Traits::int_type int_type;
64 typedef typename _Traits::pos_type pos_type;
65 typedef typename _Traits::off_type off_type;
66 typedef _Traits traits_type;
121 {
return __pf(*
this); }
169 {
return _M_extract(__n); }
176 {
return _M_extract(__n); }
183 {
return _M_extract(__n); }
187 {
return _M_extract(__n); }
191 {
return _M_extract(__n); }
193 #ifdef _GLIBCXX_USE_LONG_LONG
196 {
return _M_extract(__n); }
200 {
return _M_extract(__n); }
215 {
return _M_extract(__f); }
219 {
return _M_extract(__f); }
223 {
return _M_extract(__f); }
236 {
return _M_extract(__p); }
355 {
return this->
get(__s, __n, this->
widen(
'\n')); }
377 get(__streambuf_type& __sb, char_type __delim);
388 {
return this->
get(__sb, this->
widen(
'\n')); }
602 seekg(off_type, ios_base::seekdir);
610 #if __cplusplus >= 201103L
611 basic_istream(
const basic_istream&) =
delete;
613 basic_istream(basic_istream&& __rhs)
616 __ios_type::move(__rhs);
625 operator=(basic_istream&& __rhs)
632 swap(basic_istream& __rhs)
634 __ios_type::swap(__rhs);
639 template<
typename _ValueT>
641 _M_extract(_ValueT& __v);
660 #ifdef _GLIBCXX_USE_WCHAR_T
685 template<
typename _CharT,
typename _Traits>
697 typedef typename _Traits::int_type __int_type;
731 #if __cplusplus >= 201103L
734 operator bool()
const
750 template<
typename _CharT,
typename _Traits>
754 template<
class _Traits>
757 {
return (__in >>
reinterpret_cast<char&
>(__c)); }
759 template<
class _Traits>
760 inline basic_istream<char, _Traits>&
762 {
return (__in >>
reinterpret_cast<char&
>(__c)); }
766 template<
typename _CharT,
typename _Traits>
768 __istream_extract(basic_istream<_CharT, _Traits>&, _CharT*,
streamsize);
799 #if __cplusplus <= 201703L
800 template<
typename _CharT,
typename _Traits>
801 __attribute__((__nonnull__(2), __access__(__write_only__, 2)))
802 inline basic_istream<_CharT, _Traits>&
803 operator>>(basic_istream<_CharT, _Traits>& __in, _CharT* __s)
808 size_t __n = __builtin_object_size(__s, 0);
809 if (__n <
sizeof(_CharT))
812 __glibcxx_assert(__n >=
sizeof(_CharT));
817 else if (__n != (
size_t)-1)
819 __n /=
sizeof(_CharT);
821 std::__istream_extract(__in, __s, __n);
822 if (__in.good() && (__w <= 0 || __n < __w))
826 const typename _Traits::int_type __c = __in.rdbuf()->sgetc();
827 const bool __eof = _Traits::eq_int_type(__c, _Traits::eof());
828 if (__builtin_expect(__eof,
true))
836 streamsize __n = __gnu_cxx::__numeric_traits<streamsize>::__max;
837 __n /=
sizeof(_CharT);
838 std::__istream_extract(__in, __s, __n);
843 template<
class _Traits>
844 __attribute__((__nonnull__(2), __access__(__write_only__, 2)))
845 inline basic_istream<
char, _Traits>&
846 operator>>(basic_istream<
char, _Traits>& __in,
unsigned char* __s)
847 {
return __in >>
reinterpret_cast<char*
>(__s); }
849 template<
class _Traits>
850 __attribute__((__nonnull__(2), __access__(__write_only__, 2)))
851 inline basic_istream<
char, _Traits>&
852 operator>>(basic_istream<
char, _Traits>& __in,
signed char* __s)
853 {
return __in >>
reinterpret_cast<char*
>(__s); }
857 template<
typename _CharT,
typename _Traits,
size_t _Num>
858 inline basic_istream<_CharT, _Traits>&
861 static_assert(_Num <= __gnu_cxx::__numeric_traits<streamsize>::__max);
862 std::__istream_extract(__in, __s, _Num);
866 template<
class _Traits,
size_t _Num>
867 inline basic_istream<char, _Traits>&
869 {
return __in >>
reinterpret_cast<char(&)[_Num]
>(__s); }
871 template<
class _Traits,
size_t _Num>
872 inline basic_istream<char, _Traits>&
874 {
return __in >>
reinterpret_cast<char(&)[_Num]
>(__s); }
889 template<
typename _CharT,
typename _Traits>
898 typedef _CharT char_type;
899 typedef typename _Traits::int_type int_type;
900 typedef typename _Traits::pos_type pos_type;
901 typedef typename _Traits::off_type off_type;
902 typedef _Traits traits_type;
926 : __istream_type(), __ostream_type() { }
928 #if __cplusplus >= 201103L
929 basic_iostream(
const basic_iostream&) =
delete;
931 basic_iostream(basic_iostream&& __rhs)
932 : __istream_type(
std::move(__rhs)), __ostream_type(*this)
940 operator=(basic_iostream&& __rhs)
947 swap(basic_iostream& __rhs)
948 { __istream_type::swap(__rhs); }
972 template<
typename _CharT,
typename _Traits>
973 basic_istream<_CharT, _Traits>&
974 ws(basic_istream<_CharT, _Traits>& __is);
976 #if __cplusplus >= 201103L
982 #if __cpp_lib_concepts
983 template<
typename _Is,
typename _Tp>
984 requires __derived_from_ios_base<_Is>
985 && requires (_Is& __is, _Tp&& __t) { __is >> std::forward<_Tp>(__t); }
986 using __rvalue_stream_extraction_t = _Is&&;
988 template<
typename _Is,
typename _Tp,
989 typename = _Require_derived_from_ios_base<_Is>,
990 typename = decltype(std::declval<_Is&>() >> std::declval<_Tp>())>
991 using __rvalue_stream_extraction_t = _Is&&;
1004 template<
typename _Istream,
typename _Tp>
1005 inline __rvalue_stream_extraction_t<_Istream, _Tp>
1008 __is >> std::forward<_Tp>(__x);
1013 _GLIBCXX_END_NAMESPACE_VERSION
basic_istream< char > istream
Base class for char input streams.
constexpr std::remove_reference< _Tp >::type && move(_Tp &&__t) noexcept
Convert a value to an rvalue.
void swap(any &__x, any &__y) noexcept
Exchange the states of two any objects.
ISO C++ entities toplevel namespace is std.
std::basic_istream< _CharT, _Traits > & operator>>(std::basic_istream< _CharT, _Traits > &__is, bitset< _Nb > &__x)
Global I/O operators for bitsets.
ptrdiff_t streamsize
Integral type for I/O operation counts and buffer sizes.
basic_istream< _CharT, _Traits > & ws(basic_istream< _CharT, _Traits > &__is)
Quick and easy way to eat whitespace.
Template class basic_ios, virtual base class for all stream classes.
void init(basic_streambuf< _CharT, _Traits > *__sb)
All setup is performed here.
char_type widen(char __c) const
Widens characters.
The actual work of input and output (interface).
Template class basic_istream.
__istream_type & seekg(pos_type)
Changing the current read position.
streamsize gcount() const
Character counting.
int_type get()
Simple extraction.
streamsize readsome(char_type *__s, streamsize __n)
Extraction until the buffer is exhausted, but no more.
__istream_type & operator>>(long double &__f)
Floating point arithmetic extractors.
int_type peek()
Looking ahead in the stream.
__istream_type & get(char_type *__s, streamsize __n)
Simple multiple-character extraction.
__istream_type & unget()
Unextracting the previous character.
pos_type tellg()
Getting the current read position.
__istream_type & operator>>(long &__n)
Integer arithmetic extractors.
__istream_type & getline(char_type *__s, streamsize __n)
String extraction.
__istream_type & get(__streambuf_type &__sb)
Extraction into another streambuf.
__istream_type & ignore()
Simple extraction.
__istream_type & operator>>(unsigned long &__n)
Integer arithmetic extractors.
virtual ~basic_istream()
Base destructor.
__istream_type & operator>>(long long &__n)
Integer arithmetic extractors.
__istream_type & operator>>(__ios_type &(*__pf)(__ios_type &))
Interface for manipulators.
__istream_type & operator>>(unsigned long long &__n)
Integer arithmetic extractors.
__istream_type & read(char_type *__s, streamsize __n)
Extraction without delimiters.
__istream_type & putback(char_type __c)
Unextracting a single character.
__istream_type & operator>>(float &__f)
Floating point arithmetic extractors.
basic_istream(__streambuf_type *__sb)
Base constructor.
__istream_type & operator>>(unsigned int &__n)
Integer arithmetic extractors.
__istream_type & getline(char_type *__s, streamsize __n, char_type __delim)
String extraction.
__istream_type & operator>>(void *&__p)
Basic arithmetic extractors.
__istream_type & operator>>(bool &__n)
Integer arithmetic extractors.
__istream_type & operator>>(ios_base &(*__pf)(ios_base &))
Interface for manipulators.
int sync()
Synchronizing the stream buffer.
__istream_type & operator>>(__istream_type &(*__pf)(__istream_type &))
Interface for manipulators.
__istream_type & operator>>(double &__f)
Floating point arithmetic extractors.
__istream_type & operator>>(unsigned short &__n)
Integer arithmetic extractors.
Template class basic_ostream.
Template class basic_iostream.
basic_iostream(basic_streambuf< _CharT, _Traits > *__sb)
Constructor does nothing.
virtual ~basic_iostream()
Destructor does nothing.
Performs setup work for input streams.
_Traits traits_type
Easy access to dependent types.
The base of the I/O class hierarchy.
static const iostate eofbit
Indicates that an input operation reached the end of an input sequence.
static const iostate failbit
Indicates that an input operation failed to read the expected characters, or that an output operation...
Primary class template ctype facet.
Primary class template num_get.