29 #ifndef _GLIBCXX_DEBUG_FORWARD_LIST
30 #define _GLIBCXX_DEBUG_FORWARD_LIST 1
32 #pragma GCC system_header
35 namespace std _GLIBCXX_VISIBILITY(default) {
namespace __debug {
45 #define __glibcxx_check_valid_fl_range(_First,_Last,_Dist) \
46 _GLIBCXX_DEBUG_VERIFY(_First._M_valid_range(_Last, _Dist, false), \
47 _M_message(__gnu_debug::__msg_valid_range) \
48 ._M_iterator(_First, #_First) \
49 ._M_iterator(_Last, #_Last))
55 template<
typename _SafeSequence>
61 {
return *
static_cast<_SafeSequence*
>(
this); }
75 using _Base_const_iterator = __decltype(_M_this()._M_base().
cend());
78 return __it != _M_this()._M_base().cbefore_begin()
79 && __it != _M_this()._M_base().cend(); });
85 template<
typename _SafeSequence>
93 using const_iterator =
typename _SafeSequence::const_iterator;
96 _SafeSequence& __rseq =
static_cast<_SafeSequence&
>(__rhs);
102 const_iterator* __victim =
103 static_cast<const_iterator*
>(__victim_base);
105 if (__victim->base() == __rseq._M_base().cbefore_begin())
108 if (__lhs_iterators == __victim_base)
109 __lhs_iterators = __victim_base->
_M_next;
112 __victim_base->
_M_next = __bbegin_its;
113 __bbegin_its->
_M_prior = __victim_base;
116 __last_bbegin = __victim_base;
117 __bbegin_its = __victim_base;
127 __rhs_iterators->
_M_prior = __last_bbegin;
128 __last_bbegin->
_M_next = __rhs_iterators;
130 __rhs_iterators = __bbegin_its;
134 template<
typename _SafeSequence>
136 _Safe_forward_list<_SafeSequence>::
137 _M_swap_single(_Safe_sequence_base& __other) noexcept
139 std::swap(_M_this()._M_iterators, __other._M_iterators);
140 std::swap(_M_this()._M_const_iterators, __other._M_const_iterators);
143 _Safe_iterator_base* __this_its = _M_this()._M_iterators;
144 _M_swap_aux(__other, __other._M_iterators,
145 _M_this(), _M_this()._M_iterators);
146 _Safe_iterator_base* __this_const_its = _M_this()._M_const_iterators;
147 _M_swap_aux(__other, __other._M_const_iterators,
148 _M_this(), _M_this()._M_const_iterators);
149 _M_swap_aux(_M_this(), __this_its,
150 __other, __other._M_iterators);
151 _M_swap_aux(_M_this(), __this_const_its,
152 __other, __other._M_const_iterators);
157 template<
typename _SafeSequence>
159 _Safe_forward_list<_SafeSequence>::
160 _M_swap(_Safe_sequence_base& __other) noexcept
163 using namespace __gnu_cxx;
164 __mutex *__this_mutex = &_M_this()._M_get_mutex();
165 __mutex *__other_mutex =
166 &
static_cast<_SafeSequence&
>(__other)._M_get_mutex();
167 if (__this_mutex == __other_mutex)
170 _M_swap_single(__other);
175 ? *__this_mutex : *__other_mutex);
177 ? *__other_mutex : *__this_mutex);
178 _M_swap_single(__other);
183 namespace std _GLIBCXX_VISIBILITY(default)
188 template<
typename _Tp,
typename _Alloc = std::allocator<_Tp> >
191 forward_list<_Tp, _Alloc>, _Alloc, __gnu_debug::_Safe_forward_list>,
192 public _GLIBCXX_STD_C::forward_list<_Tp, _Alloc>
194 typedef _GLIBCXX_STD_C::forward_list<_Tp, _Alloc> _Base;
198 typedef typename _Base::iterator _Base_iterator;
199 typedef typename _Base::const_iterator _Base_const_iterator;
201 template<
typename _ItT,
typename _SeqT,
typename _CatT>
202 friend class ::__gnu_debug::_Safe_iterator;
207 _Base_ref(
const _Base& __r) : _M_ref(__r) { }
213 typedef typename _Base::reference reference;
214 typedef typename _Base::const_reference const_reference;
217 _Base_iterator, forward_list> iterator;
219 _Base_const_iterator, forward_list> const_iterator;
221 typedef typename _Base::size_type size_type;
222 typedef typename _Base::difference_type difference_type;
224 typedef _Tp value_type;
225 typedef typename _Base::allocator_type allocator_type;
226 typedef typename _Base::pointer pointer;
227 typedef typename _Base::const_pointer const_pointer;
231 forward_list() =
default;
234 forward_list(
const allocator_type& __al) noexcept
237 forward_list(
const forward_list& __list,
const allocator_type& __al)
238 : _Base(__list, __al)
241 forward_list(forward_list&& __list,
const allocator_type& __al)
244 _Base,
const allocator_type&>::value )
245 : _Safe(std::
move(__list._M_safe()), __al),
246 _Base(std::
move(__list._M_base()), __al)
250 forward_list(size_type __n,
const allocator_type& __al = allocator_type())
254 forward_list(size_type __n,
const _Tp& __value,
255 const allocator_type& __al = allocator_type())
256 : _Base(__n, __value, __al)
259 template<
typename _InputIterator,
260 typename = std::_RequireInputIter<_InputIterator>>
261 forward_list(_InputIterator __first, _InputIterator __last,
262 const allocator_type& __al = allocator_type())
263 : _Base(__gnu_debug::
__base(
264 __glibcxx_check_valid_constructor_range(__first, __last)),
265 __gnu_debug::
__base(__last), __al)
268 forward_list(
const forward_list&) =
default;
270 forward_list(forward_list&&) =
default;
273 const allocator_type& __al = allocator_type())
277 ~forward_list() =
default;
279 forward_list(_Base_ref __x) : _Base(__x._M_ref) { }
282 operator=(
const forward_list&) =
default;
291 this->_M_invalidate_all();
295 template<
typename _InputIterator,
296 typename = std::_RequireInputIter<_InputIterator>>
298 assign(_InputIterator __first, _InputIterator __last)
301 __glibcxx_check_valid_range2(__first, __last, __dist);
303 if (__dist.
second >= __gnu_debug::__dp_sign)
304 _Base::assign(__gnu_debug::__unsafe(__first),
305 __gnu_debug::__unsafe(__last));
307 _Base::assign(__first, __last);
309 this->_M_invalidate_all();
313 assign(size_type __n,
const _Tp& __val)
315 _Base::assign(__n, __val);
316 this->_M_invalidate_all();
323 this->_M_invalidate_all();
326 using _Base::get_allocator;
331 before_begin() noexcept
332 {
return { _Base::before_begin(),
this }; }
335 before_begin() const noexcept
336 {
return { _Base::before_begin(),
this }; }
343 begin() const noexcept
359 cbefore_begin() const noexcept
360 {
return { _Base::cbefore_begin(),
this }; }
363 cend() const noexcept
367 using _Base::max_size;
374 __glibcxx_check_nonempty();
375 return _Base::front();
381 __glibcxx_check_nonempty();
382 return _Base::front();
387 using _Base::emplace_front;
388 using _Base::push_front;
393 __glibcxx_check_nonempty();
394 this->_M_invalidate_if([
this](_Base_const_iterator __it)
395 {
return __it == this->_M_base().cbegin(); });
399 template<
typename... _Args>
401 emplace_after(const_iterator __pos, _Args&&... __args)
404 return { _Base::emplace_after(__pos.base(),
405 std::forward<_Args>(__args)...),
410 insert_after(const_iterator __pos,
const _Tp& __val)
413 return { _Base::insert_after(__pos.base(), __val),
this };
417 insert_after(const_iterator __pos, _Tp&& __val)
420 return { _Base::insert_after(__pos.base(),
std::move(__val)),
this };
424 insert_after(const_iterator __pos, size_type __n,
const _Tp& __val)
427 return { _Base::insert_after(__pos.base(), __n, __val),
this };
430 template<
typename _InputIterator,
431 typename = std::_RequireInputIter<_InputIterator>>
433 insert_after(const_iterator __pos,
434 _InputIterator __first, _InputIterator __last)
439 if (__dist.
second >= __gnu_debug::__dp_sign)
442 _Base::insert_after(__pos.base(),
443 __gnu_debug::__unsafe(__first),
444 __gnu_debug::__unsafe(__last)),
448 return { _Base::insert_after(__pos.base(), __first, __last),
this };
455 return { _Base::insert_after(__pos.base(), __il),
this };
459 erase_after(const_iterator __pos)
463 _Base_const_iterator __next = std::next(__pos.base());
464 this->_M_invalidate_if([__next](_Base_const_iterator __it)
465 {
return __it == __next; });
466 return { _Base::erase_after(__pos.base()),
this };
470 erase_after(const_iterator __pos, const_iterator __last)
473 for (_Base_const_iterator __victim = std::next(__pos.base());
474 __victim != __last.base(); ++__victim)
477 _M_message(__gnu_debug::__msg_valid_range2)
478 ._M_sequence(*
this,
"this")
479 ._M_iterator(__pos,
"pos")
480 ._M_iterator(__last,
"last"));
481 this->_M_invalidate_if([__victim](_Base_const_iterator __it)
482 {
return __it == __victim; });
485 return { _Base::erase_after(__pos.base(), __last.base()),
this };
489 swap(forward_list& __list)
490 noexcept( noexcept(declval<_Base&>().swap(__list)) )
492 _Safe::_M_swap(__list);
497 resize(size_type __sz)
499 this->_M_detach_singular();
504 for (size_type __i = __sz; __victim != __end && __i > 0; --__i)
507 for (; __victim != __end; ++__victim)
509 this->_M_invalidate_if([__victim](_Base_const_iterator __it)
510 {
return __it == __victim; });
519 this->_M_revalidate_singular();
520 __throw_exception_again;
525 resize(size_type __sz,
const value_type& __val)
527 this->_M_detach_singular();
532 for (size_type __i = __sz; __victim != __end && __i > 0; --__i)
535 for (; __victim != __end; ++__victim)
537 this->_M_invalidate_if([__victim](_Base_const_iterator __it)
538 {
return __it == __victim; });
543 _Base::resize(__sz, __val);
547 this->_M_revalidate_singular();
548 __throw_exception_again;
556 this->_M_invalidate_all();
561 splice_after(const_iterator __pos, forward_list&& __list)
565 _M_message(__gnu_debug::__msg_self_splice)
566 ._M_sequence(*
this,
"this"));
567 _GLIBCXX_DEBUG_VERIFY(__list.get_allocator() == this->get_allocator(),
568 _M_message(__gnu_debug::__msg_splice_alloc)
570 ._M_sequence(__list,
"__list"));
571 this->_M_transfer_from_if(__list, [&__list](_Base_const_iterator __it)
573 return __it != __list._M_base().cbefore_begin()
574 && __it != __list._M_base().end();
576 _Base::splice_after(__pos.base(),
std::move(__list._M_base()));
580 splice_after(const_iterator __pos, forward_list& __list)
581 { splice_after(__pos,
std::move(__list)); }
584 splice_after(const_iterator __pos, forward_list&& __list,
588 _GLIBCXX_DEBUG_VERIFY(__i._M_before_dereferenceable(),
589 _M_message(__gnu_debug::__msg_splice_bad)
590 ._M_iterator(__i,
"__i"));
592 _M_message(__gnu_debug::__msg_splice_other)
593 ._M_iterator(__i,
"__i")
594 ._M_sequence(__list,
"__list"));
595 _GLIBCXX_DEBUG_VERIFY(__list.get_allocator() == this->get_allocator(),
596 _M_message(__gnu_debug::__msg_splice_alloc)
598 ._M_sequence(__list,
"__list"));
602 _Base_const_iterator __next = std::next(__i.base());
603 this->_M_transfer_from_if(__list, [__next](_Base_const_iterator __it)
604 {
return __it == __next; });
605 _Base::splice_after(__pos.base(),
std::move(__list._M_base()),
610 splice_after(const_iterator __pos, forward_list& __list,
612 { splice_after(__pos,
std::move(__list), __i); }
615 splice_after(const_iterator __pos, forward_list&& __list,
616 const_iterator __before, const_iterator __last)
621 __glibcxx_check_valid_fl_range(__before, __last, __dist);
622 _GLIBCXX_DEBUG_VERIFY(__before._M_attached_to(__listptr),
623 _M_message(__gnu_debug::__msg_splice_other)
624 ._M_sequence(__list,
"list")
625 ._M_iterator(__before,
"before"));
626 _GLIBCXX_DEBUG_VERIFY(__before._M_dereferenceable()
627 || __before._M_is_before_begin(),
628 _M_message(__gnu_debug::__msg_valid_range2)
629 ._M_sequence(__list,
"list")
630 ._M_iterator(__before,
"before")
631 ._M_iterator(__last,
"last"));
632 _GLIBCXX_DEBUG_VERIFY(__before != __last,
633 _M_message(__gnu_debug::__msg_valid_range2)
634 ._M_sequence(__list,
"list")
635 ._M_iterator(__before,
"before")
636 ._M_iterator(__last,
"last"));
637 _GLIBCXX_DEBUG_VERIFY(__list.get_allocator() == this->get_allocator(),
638 _M_message(__gnu_debug::__msg_splice_alloc)
640 ._M_sequence(__list,
"__list"));
642 for (_Base_const_iterator __tmp = std::next(__before.base());
643 __tmp != __last.base(); ++__tmp)
645 _GLIBCXX_DEBUG_VERIFY(__tmp != __list._M_base().end(),
646 _M_message(__gnu_debug::__msg_valid_range2)
647 ._M_sequence(__list,
"list")
648 ._M_iterator(__before,
"before")
649 ._M_iterator(__last,
"last"));
650 _GLIBCXX_DEBUG_VERIFY(__listptr !=
this || __tmp != __pos.base(),
651 _M_message(__gnu_debug::__msg_splice_overlap)
652 ._M_iterator(__tmp,
"position")
653 ._M_iterator(__before,
"before")
654 ._M_iterator(__last,
"last"));
657 this->_M_transfer_from_if(__list, [__tmp](_Base_const_iterator __it)
658 {
return __it == __tmp; });
661 _Base::splice_after(__pos.base(),
std::move(__list._M_base()),
662 __before.base(), __last.base());
666 splice_after(const_iterator __pos, forward_list& __list,
667 const_iterator __before, const_iterator __last)
668 { splice_after(__pos,
std::move(__list), __before, __last); }
671 #if __cplusplus > 201703L
672 using __remove_return_type = size_type;
673 # define _GLIBCXX_FWDLIST_REMOVE_RETURN_TYPE_TAG \
674 __attribute__((__abi_tag__("__cxx20")))
675 # define _GLIBCXX20_ONLY(__expr) __expr
677 using __remove_return_type = void;
678 # define _GLIBCXX_FWDLIST_REMOVE_RETURN_TYPE_TAG
679 # define _GLIBCXX20_ONLY(__expr)
683 _GLIBCXX_FWDLIST_REMOVE_RETURN_TYPE_TAG
685 remove(
const _Tp& __val)
687 if (!this->_M_iterators && !this->_M_const_iterators)
688 return _Base::remove(__val);
690 size_type __removed __attribute__((__unused__)) = 0;
691 _Base __to_destroy(get_allocator());
692 _Base_const_iterator __x = _Base::cbefore_begin();
693 _Base_const_iterator __old = __x++;
698 _Base_const_iterator __next = std::next(__old);
699 this->_M_invalidate_if([__next](_Base_const_iterator __it)
700 {
return __it == __next; });
701 __to_destroy.splice_after(__to_destroy.cbefore_begin(),
704 _GLIBCXX20_ONLY( __removed++ );
710 return _GLIBCXX20_ONLY( __removed );
713 template<
typename _Pred>
715 remove_if(_Pred __pred)
717 if (!this->_M_iterators && !this->_M_const_iterators)
718 return _Base::remove_if(__pred);
720 size_type __removed __attribute__((__unused__)) = 0;
721 _Base __to_destroy(get_allocator());
722 _Base_iterator __x = _Base::before_begin();
723 _Base_iterator __old = __x++;
728 this->_M_invalidate_if([__x](_Base_const_iterator __it)
729 {
return __it == __x; });
730 __to_destroy.splice_after(__to_destroy.cbefore_begin(),
733 _GLIBCXX20_ONLY( __removed++ );
739 return _GLIBCXX20_ONLY( __removed );
742 _GLIBCXX_FWDLIST_REMOVE_RETURN_TYPE_TAG
747 template<
typename _BinPred>
749 unique(_BinPred __binary_pred)
751 if (!this->_M_iterators && !this->_M_const_iterators)
752 return _Base::unique(__binary_pred);
756 if (__first == __last)
757 return _GLIBCXX20_ONLY(0);
759 size_type __removed __attribute__((__unused__)) = 0;
760 _Base __to_destroy(get_allocator());
761 _Base_const_iterator __next = std::next(__first);
762 while (__next != __last)
764 if (__binary_pred(*__first, *__next))
766 this->_M_invalidate_if([__next](_Base_const_iterator __it)
767 {
return __it == __next; });
768 __to_destroy.splice_after(__to_destroy.cbefore_begin(),
771 _GLIBCXX20_ONLY( __removed++ );
777 return _GLIBCXX20_ONLY( __removed );
780 #undef _GLIBCXX_FWDLIST_REMOVE_RETURN_TYPE_TAG
781 #undef _GLIBCXX20_ONLY
784 merge(forward_list&& __list)
789 __glibcxx_check_sorted(__list._M_base().begin(),
790 __list._M_base().end());
791 this->_M_transfer_from_if(__list, [&__list](_Base_const_iterator __it)
793 return __it != __list._M_base().cbefore_begin()
794 && __it != __list._M_base().cend();
796 _Base::merge(
std::move(__list._M_base()));
801 merge(forward_list& __list)
804 template<
typename _Comp>
806 merge(forward_list&& __list, _Comp __comp)
812 __list._M_base().end(), __comp);
813 this->_M_transfer_from_if(__list,
814 [&__list](_Base_const_iterator __it)
816 return __it != __list._M_base().cbefore_begin()
817 && __it != __list._M_base().cend();
819 _Base::merge(
std::move(__list._M_base()), __comp);
823 template<
typename _Comp>
825 merge(forward_list& __list, _Comp __comp)
829 using _Base::reverse;
832 _M_base() noexcept {
return *
this; }
835 _M_base() const noexcept {
return *
this; }
838 #if __cpp_deduction_guides >= 201606
839 template<
typename _InputIterator,
typename _ValT
840 =
typename iterator_traits<_InputIterator>::value_type,
841 typename _Allocator = allocator<_ValT>,
842 typename = _RequireInputIter<_InputIterator>,
843 typename = _RequireAllocator<_Allocator>>
844 forward_list(_InputIterator, _InputIterator, _Allocator = _Allocator())
845 -> forward_list<_ValT, _Allocator>;
848 template<
typename _Tp,
typename _Alloc>
850 operator==(
const forward_list<_Tp, _Alloc>& __lx,
851 const forward_list<_Tp, _Alloc>& __ly)
852 {
return __lx._M_base() == __ly._M_base(); }
854 #if __cpp_lib_three_way_comparison
855 template<
typename _Tp,
typename _Alloc>
856 constexpr __detail::__synth3way_t<_Tp>
857 operator<=>(
const forward_list<_Tp, _Alloc>& __x,
858 const forward_list<_Tp, _Alloc>& __y)
859 {
return __x._M_base() <=> __y._M_base(); }
861 template<
typename _Tp,
typename _Alloc>
863 operator<(const forward_list<_Tp, _Alloc>& __lx,
864 const forward_list<_Tp, _Alloc>& __ly)
865 {
return __lx._M_base() < __ly._M_base(); }
867 template<
typename _Tp,
typename _Alloc>
869 operator!=(
const forward_list<_Tp, _Alloc>& __lx,
870 const forward_list<_Tp, _Alloc>& __ly)
871 {
return !(__lx == __ly); }
874 template<
typename _Tp,
typename _Alloc>
878 {
return (__ly < __lx); }
881 template<
typename _Tp,
typename _Alloc>
885 {
return !(__lx < __ly); }
888 template<
typename _Tp,
typename _Alloc>
890 operator<=(const forward_list<_Tp, _Alloc>& __lx,
892 {
return !(__ly < __lx); }
893 #endif // three-way comparison
896 template<
typename _Tp,
typename _Alloc>
899 noexcept(noexcept(__lx.swap(__ly)))
905 namespace __gnu_debug
907 template<
typename _Tp,
typename _Alloc>
908 struct _BeforeBeginHelper<std::__debug::forward_list<_Tp, _Alloc> >
912 template<
typename _Iterator>
914 _S_Is(
const _Safe_iterator<_Iterator, _Sequence>& __it)
917 __it.base() == __it._M_get_sequence()->_M_base().before_begin();
920 template<
typename _Iterator>
922 _S_Is_Beginnest(
const _Safe_iterator<_Iterator, _Sequence>& __it)
923 {
return _S_Is(__it); }
926 template<
typename _Tp,
typename _Alloc>
927 struct _Sequence_traits<std::__debug::forward_list<_Tp, _Alloc> >
931 static typename _Distance_traits<_It>::__type
935 ? std::make_pair(0, __dp_exact) : std::make_pair(1, __dp_sign);
939 #ifndef _GLIBCXX_DEBUG_PEDANTIC
940 template<
class _Tp,
class _Alloc>
941 struct _Insert_range_from_self_is_safe<
942 std::__debug::forward_list<_Tp, _Alloc> >
943 {
enum { __value = 1 }; };
constexpr auto cbegin(const _Container &__cont) noexcept(noexcept(std::begin(__cont))) -> decltype(std::begin(__cont))
Return an iterator pointing to the first element of the const container.
void _M_invalidate_if(_Predicate __pred)
constexpr std::remove_reference< _Tp >::type && move(_Tp &&__t) noexcept
Convert a value to an rvalue.
Class std::forward_list with safety/checking/debug instrumentation.
#define __glibcxx_check_insert_after(_Position)
Struct holding two objects of arbitrary type.
_Safe_sequence_base * _M_sequence
One of the comparison functors.
Base class for constructing a safe sequence type that tracks iterators that reference it...
_Tp * begin(valarray< _Tp > &__va)
Return an iterator pointing to the first element of the valarray.
#define __glibcxx_check_erase_range_after(_First, _Last)
_Tp * end(valarray< _Tp > &__va)
Return an iterator pointing to one past the last element of the valarray.
#define __glibcxx_check_insert_range_after(_Position, _First, _Last, _Dist)
Basic functionality for a safe iterator.
Special iterators swap and invalidation for forward_list because of the before_begin iterator...
_Safe_iterator_base * _M_next
#define __glibcxx_check_erase_after(_Position)
_Safe_iterator_base * _M_prior
constexpr auto cend(const _Container &__cont) noexcept(noexcept(std::end(__cont))) -> decltype(std::end(__cont))
Return an iterator pointing to one past the last element of the const container.
constexpr _Iterator __base(_Iterator __it)
Safe class dealing with some allocator dependent operations.
constexpr auto empty(const _Container &__cont) noexcept(noexcept(__cont.empty())) -> decltype(__cont.empty())
Return whether a container is empty.
_T2 second
The second member.
constexpr _Tp * __addressof(_Tp &__r) noexcept
Same as C++11 std::addressof.
#define __glibcxx_check_sorted_pred(_First, _Last, _Pred)
A standard container with linear time access to elements, and fixed time insertion/deletion at any po...
Base class that supports tracking of iterators that reference a sequence.
auto_ptr & operator=(auto_ptr &__a)
auto_ptr assignment operator.