diff options
Diffstat (limited to 'libstdc++-v3/include/debug/forward_list')
| -rw-r--r-- | libstdc++-v3/include/debug/forward_list | 741 |
1 files changed, 741 insertions, 0 deletions
diff --git a/libstdc++-v3/include/debug/forward_list b/libstdc++-v3/include/debug/forward_list new file mode 100644 index 000000000..70bd75a86 --- /dev/null +++ b/libstdc++-v3/include/debug/forward_list @@ -0,0 +1,741 @@ +// <forward_list> -*- C++ -*- + +// Copyright (C) 2010 Free Software Foundation, Inc. +// +// This file is part of the GNU ISO C++ Library. This library is free +// software; you can redistribute it and/or modify it under the +// terms of the GNU General Public License as published by the +// Free Software Foundation; either version 3, or (at your option) +// any later version. + +// This library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. + +// Under Section 7 of GPL version 3, you are granted additional +// permissions described in the GCC Runtime Library Exception, version +// 3.1, as published by the Free Software Foundation. + +// You should have received a copy of the GNU General Public License and +// a copy of the GCC Runtime Library Exception along with this program; +// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see +// <http://www.gnu.org/licenses/>. + +/** @file debug/forward_list + * This file is a GNU debug extension to the Standard C++ Library. + */ + +#ifndef _GLIBCXX_DEBUG_FORWARD_LIST +#define _GLIBCXX_DEBUG_FORWARD_LIST 1 + +#pragma GCC system_header + +#include <forward_list> +#include <debug/safe_sequence.h> +#include <debug/safe_iterator.h> + +namespace std _GLIBCXX_VISIBILITY(default) +{ +namespace __debug +{ + /// Class std::forward_list with safety/checking/debug instrumentation. + template<typename _Tp, typename _Alloc = std::allocator<_Tp> > + class forward_list + : public _GLIBCXX_STD_C::forward_list<_Tp, _Alloc>, + public __gnu_debug::_Safe_sequence<forward_list<_Tp, _Alloc> > + { + typedef _GLIBCXX_STD_C::forward_list<_Tp, _Alloc> _Base; + typedef __gnu_debug::_Safe_sequence<forward_list> _Safe_base; + + typedef typename _Base::iterator _Base_iterator; + typedef typename _Base::const_iterator _Base_const_iterator; + public: + typedef typename _Base::reference reference; + typedef typename _Base::const_reference const_reference; + + typedef __gnu_debug::_Safe_iterator<_Base_iterator, + forward_list> iterator; + typedef __gnu_debug::_Safe_iterator<_Base_const_iterator, + forward_list> const_iterator; + + typedef typename _Base::size_type size_type; + typedef typename _Base::difference_type difference_type; + + typedef _Tp value_type; + typedef _Alloc allocator_type; + typedef typename _Base::pointer pointer; + typedef typename _Base::const_pointer const_pointer; + + // 23.2.3.1 construct/copy/destroy: + explicit + forward_list(const _Alloc& __al = _Alloc()) + : _Base(__al) { } + + forward_list(const forward_list& __list, const _Alloc& __al) + : _Base(__list, __al) + { } + + forward_list(forward_list&& __list, const _Alloc& __al) + : _Base(std::move(__list._M_base()), __al) + { + this->_M_swap(__list); + } + + explicit + forward_list(size_type __n) + : _Base(__n) + { } + + forward_list(size_type __n, const _Tp& __value, + const _Alloc& __al = _Alloc()) + : _Base(__n, __value, __al) + { } + + template<typename _InputIterator> + forward_list(_InputIterator __first, _InputIterator __last, + const _Alloc& __al = _Alloc()) + : _Base(__gnu_debug::__base(__gnu_debug::__check_valid_range(__first, + __last)), + __gnu_debug::__base(__last), __al) + { } + + forward_list(const forward_list& __list) + : _Base(__list) + { } + + forward_list(forward_list&& __list) + : _Base(std::move(__list._M_base())) + { + this->_M_swap(__list); + } + + forward_list(std::initializer_list<_Tp> __il, + const _Alloc& __al = _Alloc()) + : _Base(__il, __al) + { } + + ~forward_list() + { } + + forward_list& + operator=(const forward_list& __list) + { + static_cast<_Base&>(*this) = __list; + this->_M_invalidate_all(); + return *this; + } + + forward_list& + operator=(forward_list&& __list) + { + // NB: DR 1204. + // NB: DR 675. + clear(); + swap(__list); + return *this; + } + + forward_list& + operator=(std::initializer_list<_Tp> __il) + { + static_cast<_Base&>(*this) = __il; + this->_M_invalidate_all(); + return *this; + } + + template<typename _InputIterator> + void + assign(_InputIterator __first, _InputIterator __last) + { + __glibcxx_check_valid_range(__first, __last); + _Base::assign(__gnu_debug::__base(__first), + __gnu_debug::__base(__last)); + this->_M_invalidate_all(); + } + + void + assign(size_type __n, const _Tp& __val) + { + _Base::assign(__n, __val); + this->_M_invalidate_all(); + } + + void + assign(std::initializer_list<_Tp> __il) + { + _Base::assign(__il); + this->_M_invalidate_all(); + } + + using _Base::get_allocator; + + // iterators: + + iterator + before_begin() + { return iterator(_Base::before_begin(), this); } + + const_iterator + before_begin() const + { return const_iterator(_Base::before_begin(), this); } + + iterator + begin() + { return iterator(_Base::begin(), this); } + + const_iterator + begin() const + { return const_iterator(_Base::begin(), this); } + + iterator + end() + { return iterator(_Base::end(), this); } + + const_iterator + end() const + { return const_iterator(_Base::end(), this); } + + const_iterator + cbegin() const + { return const_iterator(_Base::cbegin(), this); } + + const_iterator + cbefore_begin() const + { return const_iterator(_Base::cbefore_begin(), this); } + + const_iterator + cend() const + { return const_iterator(_Base::cend(), this); } + + using _Base::empty; + using _Base::max_size; + + // element access: + + reference + front() + { + __glibcxx_check_nonempty(); + return _Base::front(); + } + + const_reference + front() const + { + __glibcxx_check_nonempty(); + return _Base::front(); + } + + // modiļ¬ers: + + using _Base::emplace_front; + using _Base::push_front; + + void + pop_front() + { + __glibcxx_check_nonempty(); + this->_M_invalidate_if([this](_Base_const_iterator __it) + { return __it == this->_M_base().cbegin(); }); + _Base::pop_front(); + } + + template<typename... _Args> + iterator + emplace_after(const_iterator __pos, _Args&&... __args) + { + __glibcxx_check_insert_after(__pos); + return iterator(_Base::emplace_after(__pos.base(), + std::forward<_Args>(__args)...), + this); + } + + iterator + insert_after(const_iterator __pos, const _Tp& __val) + { + __glibcxx_check_insert_after(__pos); + return iterator(_Base::insert_after(__pos.base(), __val), this); + } + + iterator + insert_after(const_iterator __pos, _Tp&& __val) + { + __glibcxx_check_insert_after(__pos); + return iterator(_Base::insert_after(__pos.base(), std::move(__val)), + this); + } + + iterator + insert_after(const_iterator __pos, size_type __n, const _Tp& __val) + { + __glibcxx_check_insert_after(__pos); + return iterator(_Base::insert_after(__pos.base(), __n, __val), + this); + } + + template<typename _InputIterator> + iterator + insert_after(const_iterator __pos, + _InputIterator __first, _InputIterator __last) + { + __glibcxx_check_insert_range_after(__pos, __first, __last); + return iterator(_Base::insert_after(__pos.base(), + __gnu_debug::__base(__first), + __gnu_debug::__base(__last)), + this); + } + + iterator + insert_after(const_iterator __pos, std::initializer_list<_Tp> __il) + { + __glibcxx_check_insert_after(__pos); + return iterator(_Base::insert_after(__pos.base(), __il), this); + } + + private: + _Base_iterator + _M_erase_after(_Base_const_iterator __pos) + { + _Base_const_iterator __next = std::next(__pos); + this->_M_invalidate_if([__next](_Base_const_iterator __it) + { return __it == __next; }); + return _Base::erase_after(__pos); + } + public: + iterator + erase_after(const_iterator __pos) + { + __glibcxx_check_erase_after(__pos); + return iterator(_M_erase_after(__pos.base()), this); + } + + iterator + erase_after(const_iterator __pos, const_iterator __last) + { + __glibcxx_check_erase_range_after(__pos, __last); + for (_Base_const_iterator __victim = std::next(__pos.base()); + __victim != __last.base(); ++__victim) + { + _GLIBCXX_DEBUG_VERIFY(__victim != _Base::end(), + _M_message(__gnu_debug::__msg_valid_range2) + ._M_sequence(*this, "this") + ._M_iterator(__pos, "pos") + ._M_iterator(__last, "last")); + this->_M_invalidate_if([__victim](_Base_const_iterator __it) + { return __it == __victim; }); + } + return iterator(_Base::erase_after(__pos.base(), __last.base()), this); + } + + void + swap(forward_list& __list) + { + _Base::swap(__list); + this->_M_swap(__list); + } + + void + resize(size_type __sz) + { + this->_M_detach_singular(); + + // if __sz < size(), invalidate all iterators in [begin+__sz, end() + _Base_iterator __victim = _Base::begin(); + _Base_iterator __end = _Base::end(); + for (size_type __i = __sz; __victim != __end && __i > 0; --__i) + ++__victim; + + for (; __victim != __end; ++__victim) + { + this->_M_invalidate_if([__victim](_Base_const_iterator __it) + { return __it == __victim; }); + } + + __try + { + _Base::resize(__sz); + } + __catch(...) + { + this->_M_revalidate_singular(); + __throw_exception_again; + } + } + + void + resize(size_type __sz, const value_type& __val) + { + this->_M_detach_singular(); + + // if __sz < size(), invalidate all iterators in [begin+__sz, end()) + _Base_iterator __victim = _Base::begin(); + _Base_iterator __end = _Base::end(); + for (size_type __i = __sz; __victim != __end && __i > 0; --__i) + ++__victim; + + for (; __victim != __end; ++__victim) + { + this->_M_invalidate_if([__victim](_Base_const_iterator __it) + { return __it == __victim; }); + } + + __try + { + _Base::resize(__sz, __val); + } + __catch(...) + { + this->_M_revalidate_singular(); + __throw_exception_again; + } + } + + void + clear() + { + _Base::clear(); + this->_M_invalidate_all(); + } + + // 23.2.3.5 forward_list operations: + void + splice_after(const_iterator __pos, forward_list&& __list) + { + __glibcxx_check_insert_after(__pos); + _GLIBCXX_DEBUG_VERIFY(&__list != this, + _M_message(__gnu_debug::__msg_self_splice) + ._M_sequence(*this, "this")); + this->_M_transfer_from_if(__list, [&__list](_Base_const_iterator __it) + { + return __it != __list._M_base().cbefore_begin() + && __it != __list._M_base().end(); + }); + _Base::splice_after(__pos.base(), std::move(__list._M_base())); + } + + void + splice_after(const_iterator __pos, forward_list&& __list, + const_iterator __i) + { + __glibcxx_check_insert_after(__pos); + _GLIBCXX_DEBUG_VERIFY(__i._M_before_dereferenceable(), + _M_message(__gnu_debug::__msg_splice_bad) + ._M_iterator(__i, "__i")); + _GLIBCXX_DEBUG_VERIFY(__i._M_attached_to(&__list), + _M_message(__gnu_debug::__msg_splice_other) + ._M_iterator(__i, "__i") + ._M_sequence(__list, "__list")); + + // _GLIBCXX_RESOLVE_LIB_DEFECTS + // 250. splicing invalidates iterators + _Base_const_iterator __next = std::next(__i.base()); + this->_M_transfer_from_if(__list, [__next](_Base_const_iterator __it) + { return __it == __next; }); + _Base::splice_after(__pos.base(), std::move(__list._M_base()), + __i.base()); + } + + void + splice_after(const_iterator __pos, forward_list&& __list, + const_iterator __before, const_iterator __last) + { + __glibcxx_check_insert_after(__pos); + __glibcxx_check_valid_range(__before, __last); + _GLIBCXX_DEBUG_VERIFY(__before._M_attached_to(&__list), + _M_message(__gnu_debug::__msg_splice_other) + ._M_sequence(__list, "list") + ._M_iterator(__before, "before")); + _GLIBCXX_DEBUG_VERIFY(__before._M_dereferenceable() + || __before._M_is_before_begin(), + _M_message(__gnu_debug::__msg_valid_range2) + ._M_sequence(__list, "list") + ._M_iterator(__before, "before") + ._M_iterator(__last, "last")); + _GLIBCXX_DEBUG_VERIFY(__before != __last, + _M_message(__gnu_debug::__msg_valid_range2) + ._M_sequence(__list, "list") + ._M_iterator(__before, "before") + ._M_iterator(__last, "last")); + + for (_Base_const_iterator __tmp = std::next(__before.base()); + __tmp != __last.base(); ++__tmp) + { + _GLIBCXX_DEBUG_VERIFY(__tmp != __list._M_base().end(), + _M_message(__gnu_debug::__msg_valid_range2) + ._M_sequence(__list, "list") + ._M_iterator(__before, "before") + ._M_iterator(__last, "last")); + _GLIBCXX_DEBUG_VERIFY(&__list != this || __tmp != __pos.base(), + _M_message(__gnu_debug::__msg_splice_overlap) + ._M_iterator(__tmp, "position") + ._M_iterator(__before, "before") + ._M_iterator(__last, "last")); + // _GLIBCXX_RESOLVE_LIB_DEFECTS + // 250. splicing invalidates iterators + this->_M_transfer_from_if(__list, [__tmp](_Base_const_iterator __it) + { return __it == __tmp; }); + } + + _Base::splice_after(__pos.base(), std::move(__list._M_base()), + __before.base(), __last.base()); + } + + void + remove(const _Tp& __val) + { + _Base_iterator __x = _Base::before_begin(); + _Base_iterator __old = __x++; + while (__x != _Base::end()) + { + if (*__x == __val) + __x = _M_erase_after(__old); + else + __old = __x++; + } + } + + template<typename _Pred> + void + remove_if(_Pred __pred) + { + _Base_iterator __x = _Base::before_begin(); + _Base_iterator __old = __x++; + while (__x != _Base::end()) + { + if (__pred(*__x)) + __x = _M_erase_after(__old); + else + __old = __x++; + } + } + + void + unique() + { + _Base_iterator __first = _Base::begin(); + _Base_iterator __last = _Base::end(); + if (__first == __last) + return; + _Base_iterator __next = std::next(__first); + while (__next != __last) + { + if (*__first == *__next) + __next = _M_erase_after(__first); + else + __first = __next++; + } + } + + template<typename _BinPred> + void + unique(_BinPred __binary_pred) + { + _Base_iterator __first = _Base::begin(); + _Base_iterator __last = _Base::end(); + if (__first == __last) + return; + _Base_iterator __next = std::next(__first); + while (__next != __last) + { + if (__binary_pred(*__first, *__next)) + __next = _M_erase_after(__first); + else + __first = __next++; + } + } + + void + merge(forward_list&& __list) + { + if (this != &__list) + { + __glibcxx_check_sorted(_Base::begin(), _Base::end()); + __glibcxx_check_sorted(__list._M_base().begin(), + __list._M_base().end()); + this->_M_transfer_from_if(__list, [&__list](_Base_const_iterator __it) + { + return __it != __list._M_base().cbefore_begin() + && __it != __list._M_base().cend(); + }); + _Base::merge(std::move(__list._M_base())); + } + } + + template<typename _Comp> + void + merge(forward_list&& __list, _Comp __comp) + { + if (this != &__list) + { + __glibcxx_check_sorted_pred(_Base::begin(), _Base::end(), __comp); + __glibcxx_check_sorted_pred(__list._M_base().begin(), + __list._M_base().end(), __comp); + this->_M_transfer_from_if(__list, + [&__list](_Base_const_iterator __it) + { + return __it != __list._M_base().cbefore_begin() + && __it != __list._M_base().cend(); + }); + _Base::merge(std::move(__list._M_base()), __comp); + } + } + + using _Base::sort; + using _Base::reverse; + + _Base& + _M_base() { return *this; } + + const _Base& + _M_base() const { return *this; } + + private: + void + _M_invalidate_all() + { + this->_M_invalidate_if([this](_Base_const_iterator __it) + { + return __it != this->_M_base().cbefore_begin() + && __it != this->_M_base().cend(); + }); + } + typedef __gnu_debug::_Safe_iterator_base _Safe_iterator_base; + static void + _M_swap_aux(forward_list& __lhs, + _Safe_iterator_base*& __lhs_iterators, + forward_list& __rhs, + _Safe_iterator_base*& __rhs_iterators); + void _M_swap(forward_list& __list); + }; + + template<typename _Tp, typename _Alloc> + void + forward_list<_Tp, _Alloc>:: + _M_swap_aux(forward_list<_Tp, _Alloc>& __lhs, + __gnu_debug::_Safe_iterator_base*& __lhs_iterators, + forward_list<_Tp, _Alloc>& __rhs, + __gnu_debug::_Safe_iterator_base*& __rhs_iterators) + { + using __gnu_debug::_Safe_iterator_base; + _Safe_iterator_base* __bbegin_its = 0; + _Safe_iterator_base* __last_bbegin = 0; + for (_Safe_iterator_base* __iter = __lhs_iterators; __iter;) + { + // Even iterator are casted to const_iterator, not a problem. + const_iterator* __victim = static_cast<const_iterator*>(__iter); + __iter = __iter->_M_next; + if (__victim->base() == __rhs._M_base().cbefore_begin()) + { + __victim->_M_unlink(); + if (__lhs_iterators == __victim) + __lhs_iterators = __victim->_M_next; + if (__bbegin_its) + { + __victim->_M_next = __bbegin_its; + __bbegin_its->_M_prior = __victim; + } + else + __last_bbegin = __victim; + __bbegin_its = __victim; + } + else + __victim->_M_sequence = &__lhs; + } + + if (__bbegin_its) + { + if (__rhs_iterators) + { + __rhs_iterators->_M_prior = __last_bbegin; + __last_bbegin->_M_next = __rhs_iterators; + } + __rhs_iterators = __bbegin_its; + } + } + + /* Special forward_list _M_swap version that do not swap the + * before-begin ownership.*/ + template<typename _Tp, typename _Alloc> + void + forward_list<_Tp, _Alloc>:: + _M_swap(forward_list<_Tp, _Alloc>& __list) + { + __gnu_cxx::__scoped_lock sentry(this->_M_get_mutex()); + std::swap(this->_M_iterators, __list._M_iterators); + std::swap(this->_M_const_iterators, __list._M_const_iterators); + // Useless, always 1 on forward_list + //std::swap(this->_M_version, __list._M_version); + _Safe_iterator_base* __this_its = this->_M_iterators; + _M_swap_aux(__list, __list._M_iterators, *this, this->_M_iterators); + _Safe_iterator_base* __this_const_its = this->_M_const_iterators; + _M_swap_aux(__list, __list._M_const_iterators, *this, this->_M_const_iterators); + _M_swap_aux(*this, __this_its, __list, __list._M_iterators); + _M_swap_aux(*this, __this_const_its, __list, __list._M_const_iterators); + } + + template<typename _Tp, typename _Alloc> + bool + operator==(const forward_list<_Tp, _Alloc>& __lx, + const forward_list<_Tp, _Alloc>& __ly) + { return __lx._M_base() == __ly._M_base(); } + + template<typename _Tp, typename _Alloc> + inline bool + operator<(const forward_list<_Tp, _Alloc>& __lx, + const forward_list<_Tp, _Alloc>& __ly) + { return __lx._M_base() < __ly._M_base(); } + + template<typename _Tp, typename _Alloc> + inline bool + operator!=(const forward_list<_Tp, _Alloc>& __lx, + const forward_list<_Tp, _Alloc>& __ly) + { return !(__lx == __ly); } + + /// Based on operator< + template<typename _Tp, typename _Alloc> + inline bool + operator>(const forward_list<_Tp, _Alloc>& __lx, + const forward_list<_Tp, _Alloc>& __ly) + { return (__ly < __lx); } + + /// Based on operator< + template<typename _Tp, typename _Alloc> + inline bool + operator>=(const forward_list<_Tp, _Alloc>& __lx, + const forward_list<_Tp, _Alloc>& __ly) + { return !(__lx < __ly); } + + /// Based on operator< + template<typename _Tp, typename _Alloc> + inline bool + operator<=(const forward_list<_Tp, _Alloc>& __lx, + const forward_list<_Tp, _Alloc>& __ly) + { return !(__ly < __lx); } + + /// See std::forward_list::swap(). + template<typename _Tp, typename _Alloc> + inline void + swap(forward_list<_Tp, _Alloc>& __lx, + forward_list<_Tp, _Alloc>& __ly) + { __lx.swap(__ly); } + +} // namespace __debug +} // namespace std + +namespace __gnu_debug +{ + template<class _Tp, class _Alloc> + struct _BeforeBeginHelper<std::__debug::forward_list<_Tp, _Alloc> > + { + typedef std::__debug::forward_list<_Tp, _Alloc> _Sequence; + typedef typename _Sequence::const_iterator _It; + typedef typename _It::iterator_type _BaseIt; + + static bool + _M_Is(_BaseIt __it, const _Sequence* __seq) + { return __it == __seq->_M_base().cbefore_begin(); } + }; +} + +#endif |