33#ifndef _GLIBCXX_ISTREAM
34#define _GLIBCXX_ISTREAM 1
37#pragma GCC system_header
45namespace std _GLIBCXX_VISIBILITY(default)
47_GLIBCXX_BEGIN_NAMESPACE_VERSION
61 template<
typename _CharT,
typename _Traits>
66 typedef _CharT char_type;
67 typedef typename _Traits::int_type int_type;
68 typedef typename _Traits::pos_type pos_type;
69 typedef typename _Traits::off_type off_type;
70 typedef _Traits traits_type;
125 {
return __pf(*
this); }
173 {
return _M_extract(__n); }
180 {
return _M_extract(__n); }
187 {
return _M_extract(__n); }
191 {
return _M_extract(__n); }
195 {
return _M_extract(__n); }
197#ifdef _GLIBCXX_USE_LONG_LONG
198#pragma GCC diagnostic push
199#pragma GCC diagnostic ignored "-Wlong-long"
202 {
return _M_extract(__n); }
206 {
return _M_extract(__n); }
207#pragma GCC diagnostic pop
222 {
return _M_extract(__f); }
226 {
return _M_extract(__f); }
230 {
return _M_extract(__f); }
233#if defined(__STDCPP_FLOAT16_T__) && defined(_GLIBCXX_FLOAT_IS_IEEE_BINARY32)
234 __attribute__((__always_inline__))
239 __istream_type& __ret = _M_extract(__flt);
241 if (__flt < -__FLT16_MAX__)
243 __f = -__FLT16_MAX__;
246 else if (__flt > __FLT16_MAX__)
252 __f =
static_cast<_Float16
>(__flt);
259#if defined(__STDCPP_FLOAT32_T__) && defined(_GLIBCXX_FLOAT_IS_IEEE_BINARY32)
260 __attribute__((__always_inline__))
265 __istream_type& __ret = _M_extract(__flt);
266 __f =
static_cast<_Float32
> (__flt);
271#if defined(__STDCPP_FLOAT64_T__) && defined(_GLIBCXX_DOUBLE_IS_IEEE_BINARY64)
272 __attribute__((__always_inline__))
277 __istream_type& __ret = _M_extract(__dbl);
278 __f =
static_cast<_Float64
> (__dbl);
283#if defined(__STDCPP_FLOAT128_T__) && defined(_GLIBCXX_LDOUBLE_IS_IEEE_BINARY128)
284 __attribute__((__always_inline__))
289 __istream_type& __ret = _M_extract(__ldbl);
290 __f =
static_cast<_Float128
> (__ldbl);
295#if defined(__STDCPP_BFLOAT16_T__) && defined(_GLIBCXX_FLOAT_IS_IEEE_BINARY32)
296 __attribute__((__always_inline__))
301 __istream_type& __ret = _M_extract(__flt);
303 if (__flt < -__BFLT16_MAX__)
305 __f = -__BFLT16_MAX__;
308 else if (__flt > __BFLT16_MAX__)
310 __f = __BFLT16_MAX__;
314 __f =
static_cast<__gnu_cxx::__bfloat16_t
>(__flt);
331 {
return _M_extract(__p); }
450 {
return this->
get(__s, __n, this->
widen(
'\n')); }
472 get(__streambuf_type& __sb, char_type __delim);
482 get(__streambuf_type& __sb)
483 {
return this->
get(__sb, this->
widen(
'\n')); }
705#if __cplusplus >= 201103L
711 __ios_type::move(__rhs);
729 __ios_type::swap(__rhs);
734 template<
typename _ValueT>
736 _M_extract(_ValueT& __v);
755#ifdef _GLIBCXX_USE_WCHAR_T
780 template<
typename _CharT,
typename _Traits>
791 typedef typename __istream_type::__ctype_type __ctype_type;
792 typedef typename _Traits::int_type __int_type;
826#if __cplusplus >= 201103L
829 operator bool()
const
845 template<
typename _CharT,
typename _Traits>
849 template<
class _Traits>
852 {
return (__in >>
reinterpret_cast<char&
>(__c)); }
854 template<
class _Traits>
855 inline basic_istream<char, _Traits>&
857 {
return (__in >>
reinterpret_cast<char&
>(__c)); }
861 template<
typename _CharT,
typename _Traits>
863 __istream_extract(basic_istream<_CharT, _Traits>&, _CharT*,
streamsize);
894#if __cplusplus <= 201703L
895 template<
typename _CharT,
typename _Traits>
896 __attribute__((__nonnull__(2), __access__(__write_only__, 2)))
897 inline basic_istream<_CharT, _Traits>&
898 operator>>(basic_istream<_CharT, _Traits>& __in, _CharT* __s)
903 size_t __n = __builtin_object_size(__s, 0);
904 if (__n <
sizeof(_CharT))
907 __glibcxx_assert(__n >=
sizeof(_CharT));
912 else if (__n != (
size_t)-1)
914 __n /=
sizeof(_CharT);
916 std::__istream_extract(__in, __s, __n);
917 if (__in.good() && (__w <= 0 || __n < (
size_t)__w))
921 const typename _Traits::int_type __c = __in.rdbuf()->sgetc();
922 const bool __eof = _Traits::eq_int_type(__c, _Traits::eof());
923 if (__builtin_expect(__eof,
true))
931 streamsize __n = __gnu_cxx::__numeric_traits<streamsize>::__max;
932 __n /=
sizeof(_CharT);
933 std::__istream_extract(__in, __s, __n);
938 template<
class _Traits>
939 __attribute__((__nonnull__(2), __access__(__write_only__, 2)))
941 operator>>(
basic_istream<
char, _Traits>& __in,
unsigned char* __s)
942 {
return __in >>
reinterpret_cast<char*
>(__s); }
944 template<
class _Traits>
945 __attribute__((__nonnull__(2), __access__(__write_only__, 2)))
947 operator>>(
basic_istream<
char, _Traits>& __in,
signed char* __s)
948 {
return __in >>
reinterpret_cast<char*
>(__s); }
952 template<
typename _CharT,
typename _Traits,
size_t _Num>
956 static_assert(_Num <= __gnu_cxx::__numeric_traits<streamsize>::__max);
957 std::__istream_extract(__in, __s, _Num);
961 template<
class _Traits,
size_t _Num>
962 inline basic_istream<char, _Traits>&
964 {
return __in >>
reinterpret_cast<char(&)[_Num]
>(__s); }
966 template<
class _Traits,
size_t _Num>
967 inline basic_istream<char, _Traits>&
969 {
return __in >>
reinterpret_cast<char(&)[_Num]
>(__s); }
984 template<
typename _CharT,
typename _Traits>
993 typedef _CharT char_type;
994 typedef typename _Traits::int_type int_type;
995 typedef typename _Traits::pos_type pos_type;
996 typedef typename _Traits::off_type off_type;
997 typedef _Traits traits_type;
1011 : __istream_type(__sb), __ostream_type(__sb) { }
1021 : __istream_type(), __ostream_type() { }
1023#if __cplusplus >= 201103L
1027 : __istream_type(
std::move(__rhs)), __ostream_type(*this)
1043 { __istream_type::swap(__rhs); }
1067 template<
typename _CharT,
typename _Traits>
1071#if __cplusplus >= 201103L
1077#if __cpp_concepts >= 201907L && __glibcxx_type_trait_variable_templates
1078 template<
typename _Is,
typename _Tp>
1079 requires __derived_from_ios_base<_Is>
1081 using __rvalue_stream_extraction_t = _Is&&;
1083 template<
typename _Is,
typename _Tp,
1084 typename = _Require_derived_from_ios_base<_Is>,
1086 using __rvalue_stream_extraction_t = _Is&&;
1099 template<
typename _Istream,
typename _Tp>
1100 inline __rvalue_stream_extraction_t<_Istream, _Tp>
1108_GLIBCXX_END_NAMESPACE_VERSION
basic_istream< char > istream
Base class for char input streams.
auto declval() noexcept -> decltype(__declval< _Tp >(0))
constexpr std::remove_reference< _Tp >::type && move(_Tp &&__t) noexcept
Convert a value to an rvalue.
constexpr _Tp && forward(typename std::remove_reference< _Tp >::type &__t) noexcept
Forward an lvalue.
ISO C++ entities toplevel namespace is std.
ptrdiff_t streamsize
Integral type for I/O operation counts and buffer sizes.
std::basic_istream< _CharT, _Traits > & operator>>(std::basic_istream< _CharT, _Traits > &__is, bitset< _Nb > &__x)
Global I/O operators for bitsets.
basic_istream< _CharT, _Traits > & ws(basic_istream< _CharT, _Traits > &__is)
Quick and easy way to eat whitespace.
void setstate(iostate __state)
Sets additional flags in the error state.
void init(basic_streambuf< _CharT, _Traits > *__sb)
All setup is performed here.
char_type widen(char __c) const
Widens characters.
basic_ios(basic_streambuf< _CharT, _Traits > *__sb)
Constructor performs initialization.
The actual work of input and output (interface).
Template class basic_istream.
__istream_type & operator>>(void *&__p)
Basic arithmetic extractors.
__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 & get(__streambuf_type &__sb, char_type __delim)
Extraction into another streambuf.
int_type peek()
Looking ahead in the stream.
__istream_type & ignore(streamsize __n, int_type __delim)
Discarding characters.
__istream_type & operator>>(__streambuf_type *__sb)
Extracting into another streambuf.
__istream_type & unget()
Unextracting the previous character.
pos_type tellg()
Getting the current read position.
__istream_type & operator>>(int &__n)
Integer arithmetic extractors.
__istream_type & get(__streambuf_type &__sb)
Extraction into another streambuf.
__istream_type & operator>>(double &__f)
Floating point arithmetic extractors.
__istream_type & ignore()
Simple extraction.
__istream_type & operator>>(bool &__n)
Integer arithmetic extractors.
__istream_type & operator>>(long &__n)
Integer arithmetic extractors.
__istream_type & get(char_type &__c)
Simple extraction.
virtual ~basic_istream()
Base destructor.
__istream_type & getline(char_type *__s, streamsize __n)
String extraction.
__istream_type & operator>>(unsigned long long &__n)
Integer arithmetic extractors.
__istream_type & operator>>(float &__f)
Floating point arithmetic extractors.
__istream_type & operator>>(__ios_type &(*__pf)(__ios_type &))
Interface for manipulators.
__istream_type & operator>>(long long &__n)
Integer arithmetic extractors.
__istream_type & operator>>(unsigned long &__n)
Integer arithmetic extractors.
__istream_type & read(char_type *__s, streamsize __n)
Extraction without delimiters.
__istream_type & operator>>(unsigned int &__n)
Integer arithmetic extractors.
__istream_type & operator>>(unsigned short &__n)
Integer arithmetic extractors.
__istream_type & putback(char_type __c)
Unextracting a single character.
basic_istream(__streambuf_type *__sb)
Base constructor.
__istream_type & seekg(off_type, ios_base::seekdir)
Changing the current read position.
__istream_type & getline(char_type *__s, streamsize __n, char_type __delim)
String extraction.
__istream_type & get(char_type *__s, streamsize __n, char_type __delim)
Simple multiple-character extraction.
__istream_type & get(char_type *__s, streamsize __n)
Simple multiple-character extraction.
__istream_type & operator>>(ios_base &(*__pf)(ios_base &))
Interface for manipulators.
__istream_type & operator>>(long double &__f)
Floating point arithmetic extractors.
__istream_type & operator>>(__istream_type &(*__pf)(__istream_type &))
Interface for manipulators.
int sync()
Synchronizing the stream buffer.
__istream_type & operator>>(short &__n)
Integer arithmetic extractors.
__istream_type & ignore(streamsize __n)
Simple extraction.
basic_ostream(__streambuf_type *__sb)
Base constructor.
basic_iostream(basic_streambuf< _CharT, _Traits > *__sb)
Constructor does nothing.
virtual ~basic_iostream()
Destructor does nothing.
sentry(basic_istream< _CharT, _Traits > &__is, bool __noskipws=false)
The constructor performs all the work.
_Traits traits_type
Easy access to dependent types.
The base of the I/O class hierarchy.
_Ios_Iostate iostate
This is a bitmask type.
static const iostate eofbit
Indicates that an input operation reached the end of an input sequence.
static const iostate goodbit
Indicates all is well.
_Ios_Seekdir seekdir
This is an enumerated type.
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.