libstdc++
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#include <stl_iterator.h>
Public Types | |
using | difference_type |
using | iterator_category |
using | iterator_concept |
typedef _Iterator | iterator_type |
typedef __traits_type::pointer | pointer |
using | reference |
using | value_type |
Public Member Functions | |
constexpr | reverse_iterator () noexcept(/*conditional */) |
constexpr | reverse_iterator (const reverse_iterator &__x) noexcept(/*conditional */) |
template<typename _Iter > requires __convertible<_Iter> | |
constexpr | reverse_iterator (const reverse_iterator< _Iter > &__x) noexcept(/*conditional */) |
constexpr | reverse_iterator (iterator_type __x) noexcept(/*conditional */) |
constexpr iterator_type | base () const noexcept(/*conditional */) |
constexpr reference | operator* () const |
constexpr reverse_iterator | operator+ (difference_type __n) const |
constexpr reverse_iterator & | operator++ () |
constexpr reverse_iterator | operator++ (int) |
constexpr reverse_iterator & | operator+= (difference_type __n) |
constexpr reverse_iterator | operator- (difference_type __n) const |
constexpr reverse_iterator & | operator-- () |
constexpr reverse_iterator | operator-- (int) |
constexpr reverse_iterator & | operator-= (difference_type __n) |
constexpr pointer | operator-> () const |
reverse_iterator & | operator= (const reverse_iterator &)=default |
template<typename _Iter > requires __convertible<_Iter> && assignable_from<_Iterator&, const _Iter&> | |
constexpr reverse_iterator & | operator= (const reverse_iterator< _Iter > &__x) noexcept(/*conditional */) |
constexpr reference | operator[] (difference_type __n) const |
Protected Types | |
typedef iterator_traits< _Iterator > | __traits_type |
Protected Attributes | |
_Iterator | current |
Friends | |
constexpr iter_rvalue_reference_t< _Iterator > | iter_move (const reverse_iterator &__i) noexcept(is_nothrow_copy_constructible_v< _Iterator > &&noexcept(ranges::iter_move(--std::declval< _Iterator & >()))) |
template<indirectly_swappable< _Iterator > _Iter2> | |
constexpr void | iter_swap (const reverse_iterator &__x, const reverse_iterator< _Iter2 > &__y) noexcept(is_nothrow_copy_constructible_v< _Iterator > &&is_nothrow_copy_constructible_v< _Iter2 > &&noexcept(ranges::iter_swap(--std::declval< _Iterator & >(), --std::declval< _Iter2 & >()))) |
Bidirectional and random access iterators have corresponding reverse iterator adaptors that iterate through the data structure in the opposite direction. They have the same signatures as the corresponding iterators. The fundamental relation between a reverse iterator and its corresponding iterator i
is established by the identity:
This mapping is dictated by the fact that while there is always a pointer past the end of an array, there might not be a valid pointer before the beginning of an array. [24.4.1]/1,2
Reverse iterators can be tricky and surprising at first. Their semantics make sense, however, and the trickiness is a side effect of the requirement that the iterators must be safe.
Definition at line 136 of file bits/stl_iterator.h.
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protected |
Definition at line 157 of file bits/stl_iterator.h.
using std::reverse_iterator< _Iterator >::difference_type |
Definition at line 172 of file bits/stl_iterator.h.
using std::reverse_iterator< _Iterator >::iterator_category |
Definition at line 169 of file bits/stl_iterator.h.
using std::reverse_iterator< _Iterator >::iterator_concept |
Definition at line 166 of file bits/stl_iterator.h.
typedef _Iterator std::reverse_iterator< _Iterator >::iterator_type |
Definition at line 160 of file bits/stl_iterator.h.
typedef __traits_type::pointer std::reverse_iterator< _Iterator >::pointer |
Definition at line 161 of file bits/stl_iterator.h.
using std::reverse_iterator< _Iterator >::reference |
Definition at line 173 of file bits/stl_iterator.h.
using std::reverse_iterator< _Iterator >::value_type |
Definition at line 171 of file bits/stl_iterator.h.
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inlineconstexprnoexcept |
The default constructor value-initializes member current
. If it is a pointer, that means it is zero-initialized.
Definition at line 184 of file bits/stl_iterator.h.
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inlineexplicitconstexprnoexcept |
This iterator will move in the opposite direction that x
does.
Definition at line 193 of file bits/stl_iterator.h.
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inlineconstexprnoexcept |
The copy constructor is normal.
Definition at line 202 of file bits/stl_iterator.h.
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inlineconstexprnoexcept |
A reverse_iterator across other types can be copied if the underlying iterator can be converted to the type of current
.
Definition at line 220 of file bits/stl_iterator.h.
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inlineconstexprnoexcept |
current
, the iterator used for underlying work. Definition at line 246 of file bits/stl_iterator.h.
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inlineconstexpr |
--current
This requires that --current
is dereferenceable.
x
, a reference obtained by *x
remains valid after x
has been modified or destroyed. This is a bug: http://gcc.gnu.org/PR51823 Definition at line 262 of file bits/stl_iterator.h.
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inlineconstexpr |
current
- __n The underlying iterator must be a Random Access Iterator.
Definition at line 345 of file bits/stl_iterator.h.
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inlineconstexpr |
*this
Decrements the underlying iterator.
Definition at line 294 of file bits/stl_iterator.h.
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inlineconstexpr |
*this
Decrements the underlying iterator.
Definition at line 306 of file bits/stl_iterator.h.
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inlineconstexpr |
Moves the underlying iterator backwards __n steps. The underlying iterator must be a Random Access Iterator.
Definition at line 355 of file bits/stl_iterator.h.
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inlineconstexpr |
current
- __n The underlying iterator must be a Random Access Iterator.
Definition at line 368 of file bits/stl_iterator.h.
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inlineconstexpr |
*this
Increments the underlying iterator.
Definition at line 319 of file bits/stl_iterator.h.
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inlineconstexpr |
*this
Increments the underlying iterator.
Definition at line 331 of file bits/stl_iterator.h.
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inlineconstexpr |
Moves the underlying iterator forwards __n steps. The underlying iterator must be a Random Access Iterator.
Definition at line 378 of file bits/stl_iterator.h.
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inlineconstexpr |
--current
This requires that --current
is dereferenceable.
Definition at line 275 of file bits/stl_iterator.h.
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inlineconstexprnoexcept |
Definition at line 233 of file bits/stl_iterator.h.
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inlineconstexpr |
current
- __n - 1The underlying iterator must be a Random Access Iterator.
Definition at line 391 of file bits/stl_iterator.h.
Definition at line 144 of file bits/stl_iterator.h.
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friend |
Definition at line 397 of file bits/stl_iterator.h.
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friend |
Definition at line 407 of file bits/stl_iterator.h.
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protected |
Definition at line 155 of file bits/stl_iterator.h.