30 #ifndef _STREAM_ITERATOR_H
31 #define _STREAM_ITERATOR_H 1
33 #pragma GCC system_header
37 namespace std _GLIBCXX_VISIBILITY(default)
39 _GLIBCXX_BEGIN_NAMESPACE_VERSION
47 template<
typename _Tp,
typename _CharT = char,
48 typename _Traits = char_traits<_CharT>,
typename _Dist = ptrdiff_t>
50 :
public iterator<input_iterator_tag, _Tp, _Dist, const _Tp*, const _Tp&>
53 typedef _CharT char_type;
54 typedef _Traits traits_type;
69 : _M_stream(0), _M_value(), _M_ok(false) {}
78 : _M_stream(__obj._M_stream), _M_value(__obj._M_value),
82 #if __cplusplus > 201703L && __cpp_lib_concepts
85 noexcept(is_nothrow_default_constructible_v<_Tp>)
89 #if __cplusplus >= 201103L
96 operator*() const _GLIBCXX_NOEXCEPT
98 __glibcxx_requires_cond(_M_ok,
99 _M_message(__gnu_debug::__msg_deref_istream)
100 ._M_iterator(*
this));
106 operator->() const _GLIBCXX_NOEXCEPT
112 __glibcxx_requires_cond(_M_ok,
113 _M_message(__gnu_debug::__msg_inc_istream)
114 ._M_iterator(*
this));
122 __glibcxx_requires_cond(_M_ok,
123 _M_message(__gnu_debug::__msg_inc_istream)
124 ._M_iterator(*
this));
136 return (_M_ok == __x._M_ok) && (!_M_ok || _M_stream == __x._M_stream);
142 if (_M_stream && !(*_M_stream >> _M_value))
155 {
return __x._M_equal(__y); }
157 #if __cpp_impl_three_way_comparison < 201907L
164 {
return !__x._M_equal(__y); }
167 #if __cplusplus > 201703L && __cpp_lib_concepts
171 {
return !__i._M_stream; }
186 template<
typename _Tp,
typename _CharT = char,
187 typename _Traits = char_traits<_CharT> >
189 :
public iterator<output_iterator_tag, void, void, void, void>
194 #if __cplusplus > 201703L
204 const _CharT* _M_string;
226 : _M_stream(__obj._M_stream), _M_string(__obj._M_string) { }
228 #if __cplusplus >= 201103L
237 __glibcxx_requires_cond(_M_stream != 0,
238 _M_message(__gnu_debug::__msg_output_ostream)
239 ._M_iterator(*
this));
240 *_M_stream << __value;
242 *_M_stream << _M_string;
248 operator*() _GLIBCXX_NOEXCEPT
252 operator++() _GLIBCXX_NOEXCEPT
256 operator++(
int) _GLIBCXX_NOEXCEPT
262 _GLIBCXX_END_NAMESPACE_VERSION
constexpr _Tp * __addressof(_Tp &__r) noexcept
Same as C++11 std::addressof.
ISO C++ entities toplevel namespace is std.
Template class basic_istream.
Template class basic_ostream.
is_nothrow_default_constructible
is_nothrow_copy_constructible
Provides input iterator semantics for streams.
istream_iterator(istream_type &__s)
Construct start of input stream iterator.
constexpr istream_iterator() noexcept(/*conditional */)
Construct end of input stream iterator.
friend bool operator==(const istream_iterator &__x, const istream_iterator &__y) noexcept
Return true if the iterators refer to the same stream, or are both at end-of-stream.
Provides output iterator semantics for streams.
_CharT char_type
Public typedef.
ostream_iterator & operator=(const _Tp &__value)
Writes value to underlying ostream using operator<<. If constructed with delimiter string,...
ostream_iterator(ostream_type &__s) noexcept
Construct from an ostream.
ostream_iterator(ostream_type &__s, const _CharT *__c) noexcept
_Traits traits_type
Public typedef.
ptrdiff_t difference_type
Public typedef.
basic_ostream< _CharT, _Traits > ostream_type
Public typedef.
ostream_iterator(const ostream_iterator &__obj) noexcept
Copy constructor.