1 // Debugging deque implementation -*- C++ -*-
 
    3 // Copyright (C) 2003-2014 Free Software Foundation, Inc.
 
    5 // This file is part of the GNU ISO C++ Library.  This library is free
 
    6 // software; you can redistribute it and/or modify it under the
 
    7 // terms of the GNU General Public License as published by the
 
    8 // Free Software Foundation; either version 3, or (at your option)
 
   11 // This library is distributed in the hope that it will be useful,
 
   12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 
   13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
   14 // GNU General Public License for more details.
 
   16 // Under Section 7 of GPL version 3, you are granted additional
 
   17 // permissions described in the GCC Runtime Library Exception, version
 
   18 // 3.1, as published by the Free Software Foundation.
 
   20 // You should have received a copy of the GNU General Public License and
 
   21 // a copy of the GCC Runtime Library Exception along with this program;
 
   22 // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
 
   23 // <http://www.gnu.org/licenses/>.
 
   26  *  This file is a GNU debug extension to the Standard C++ Library.
 
   29 #ifndef _GLIBCXX_DEBUG_DEQUE
 
   30 #define _GLIBCXX_DEBUG_DEQUE 1
 
   33 #include <debug/safe_sequence.h>
 
   34 #include <debug/safe_iterator.h>
 
   36 namespace std _GLIBCXX_VISIBILITY(default)
 
   40   /// Class std::deque with safety/checking/debug instrumentation.
 
   41   template<typename _Tp, typename _Allocator = std::allocator<_Tp> >
 
   43     : public _GLIBCXX_STD_C::deque<_Tp, _Allocator>,
 
   44       public __gnu_debug::_Safe_sequence<deque<_Tp, _Allocator> >
 
   46       typedef  _GLIBCXX_STD_C::deque<_Tp, _Allocator> _Base;
 
   48       typedef typename _Base::const_iterator _Base_const_iterator;
 
   49       typedef typename _Base::iterator _Base_iterator;
 
   50       typedef __gnu_debug::_Equal_to<_Base_const_iterator> _Equal;
 
   52       typedef typename _Base::reference             reference;
 
   53       typedef typename _Base::const_reference       const_reference;
 
   55       typedef __gnu_debug::_Safe_iterator<_Base_iterator,deque>
 
   57       typedef __gnu_debug::_Safe_iterator<_Base_const_iterator,deque>
 
   60       typedef typename _Base::size_type             size_type;
 
   61       typedef typename _Base::difference_type       difference_type;
 
   63       typedef _Tp                  value_type;
 
   64       typedef _Allocator               allocator_type;
 
   65       typedef typename _Base::pointer               pointer;
 
   66       typedef typename _Base::const_pointer         const_pointer;
 
   67       typedef std::reverse_iterator<iterator>       reverse_iterator;
 
   68       typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
 
   70       // 23.2.1.1 construct/copy/destroy:
 
   75       deque(const _Allocator& __a)
 
   78 #if __cplusplus >= 201103L
 
   83       deque(size_type __n, const _Tp& __value,
 
   84        const _Allocator& __a = _Allocator())
 
   85       : _Base(__n, __value, __a) { }
 
   88       deque(size_type __n, const _Tp& __value = _Tp(),
 
   89        const _Allocator& __a = _Allocator())
 
   90       : _Base(__n, __value, __a) { }
 
   93 #if __cplusplus >= 201103L
 
   94       template<class _InputIterator,
 
   95           typename = std::_RequireInputIter<_InputIterator>>
 
   97       template<class _InputIterator>
 
   99         deque(_InputIterator __first, _InputIterator __last,
 
  100          const _Allocator& __a = _Allocator())
 
  101    : _Base(__gnu_debug::__base(__gnu_debug::__check_valid_range(__first,
 
  103        __gnu_debug::__base(__last), __a)
 
  106       deque(const deque& __x)
 
  109       deque(const _Base& __x)
 
  112 #if __cplusplus >= 201103L
 
  114       : _Base(std::move(__x))
 
  115       { this->_M_swap(__x); }
 
  117       deque(initializer_list<value_type> __l,
 
  118        const allocator_type& __a = allocator_type())
 
  119       : _Base(__l, __a) { }
 
  122       ~deque() _GLIBCXX_NOEXCEPT { }
 
  125       operator=(const deque& __x)
 
  127    *static_cast<_Base*>(this) = __x;
 
  128    this->_M_invalidate_all();
 
  132 #if __cplusplus >= 201103L
 
  134       operator=(deque&& __x) noexcept
 
  138    __glibcxx_check_self_move_assign(__x);
 
  145       operator=(initializer_list<value_type> __l)
 
  147    *static_cast<_Base*>(this) = __l;
 
  148    this->_M_invalidate_all();
 
  153 #if __cplusplus >= 201103L
 
  154       template<class _InputIterator,
 
  155           typename = std::_RequireInputIter<_InputIterator>>
 
  157       template<class _InputIterator>
 
  160         assign(_InputIterator __first, _InputIterator __last)
 
  162      __glibcxx_check_valid_range(__first, __last);
 
  163      _Base::assign(__gnu_debug::__base(__first),
 
  164            __gnu_debug::__base(__last));
 
  165      this->_M_invalidate_all();
 
  169       assign(size_type __n, const _Tp& __t)
 
  171    _Base::assign(__n, __t);
 
  172    this->_M_invalidate_all();
 
  175 #if __cplusplus >= 201103L
 
  177       assign(initializer_list<value_type> __l)
 
  180    this->_M_invalidate_all();
 
  184       using _Base::get_allocator;
 
  188       begin() _GLIBCXX_NOEXCEPT
 
  189       { return iterator(_Base::begin(), this); }
 
  192       begin() const _GLIBCXX_NOEXCEPT
 
  193       { return const_iterator(_Base::begin(), this); }
 
  196       end() _GLIBCXX_NOEXCEPT
 
  197       { return iterator(_Base::end(), this); }
 
  200       end() const _GLIBCXX_NOEXCEPT
 
  201       { return const_iterator(_Base::end(), this); }
 
  204       rbegin() _GLIBCXX_NOEXCEPT
 
  205       { return reverse_iterator(end()); }
 
  207       const_reverse_iterator
 
  208       rbegin() const _GLIBCXX_NOEXCEPT
 
  209       { return const_reverse_iterator(end()); }
 
  212       rend() _GLIBCXX_NOEXCEPT
 
  213       { return reverse_iterator(begin()); }
 
  215       const_reverse_iterator
 
  216       rend() const _GLIBCXX_NOEXCEPT
 
  217       { return const_reverse_iterator(begin()); }
 
  219 #if __cplusplus >= 201103L
 
  221       cbegin() const noexcept
 
  222       { return const_iterator(_Base::begin(), this); }
 
  225       cend() const noexcept
 
  226       { return const_iterator(_Base::end(), this); }
 
  228       const_reverse_iterator
 
  229       crbegin() const noexcept
 
  230       { return const_reverse_iterator(end()); }
 
  232       const_reverse_iterator
 
  233       crend() const noexcept
 
  234       { return const_reverse_iterator(begin()); }
 
  239       _M_invalidate_after_nth(difference_type __n)
 
  241    typedef __gnu_debug::_After_nth_from<_Base_const_iterator> _After_nth;
 
  242    this->_M_invalidate_if(_After_nth(__n, _Base::begin()));
 
  246       // 23.2.1.2 capacity:
 
  248       using _Base::max_size;
 
  250 #if __cplusplus >= 201103L
 
  252       resize(size_type __sz)
 
  254    bool __invalidate_all = __sz > this->size();
 
  255    if (__sz < this->size())
 
  256      this->_M_invalidate_after_nth(__sz);
 
  260    if (__invalidate_all)
 
  261      this->_M_invalidate_all();
 
  265       resize(size_type __sz, const _Tp& __c)
 
  267    bool __invalidate_all = __sz > this->size();
 
  268    if (__sz < this->size())
 
  269      this->_M_invalidate_after_nth(__sz);
 
  271    _Base::resize(__sz, __c);
 
  273    if (__invalidate_all)
 
  274      this->_M_invalidate_all();
 
  278       resize(size_type __sz, _Tp __c = _Tp())
 
  280    bool __invalidate_all = __sz > this->size();
 
  281    if (__sz < this->size())
 
  282      this->_M_invalidate_after_nth(__sz);
 
  284    _Base::resize(__sz, __c);
 
  286    if (__invalidate_all)
 
  287      this->_M_invalidate_all();
 
  291 #if __cplusplus >= 201103L
 
  293       shrink_to_fit() noexcept
 
  295    if (_Base::_M_shrink_to_fit())
 
  296      this->_M_invalidate_all();
 
  304       operator[](size_type __n) _GLIBCXX_NOEXCEPT
 
  306    __glibcxx_check_subscript(__n);
 
  307    return _M_base()[__n];
 
  311       operator[](size_type __n) const _GLIBCXX_NOEXCEPT
 
  313    __glibcxx_check_subscript(__n);
 
  314    return _M_base()[__n];
 
  320       front() _GLIBCXX_NOEXCEPT
 
  322    __glibcxx_check_nonempty();
 
  323    return _Base::front();
 
  327       front() const _GLIBCXX_NOEXCEPT
 
  329    __glibcxx_check_nonempty();
 
  330    return _Base::front();
 
  334       back() _GLIBCXX_NOEXCEPT
 
  336    __glibcxx_check_nonempty();
 
  337    return _Base::back();
 
  341       back() const _GLIBCXX_NOEXCEPT
 
  343    __glibcxx_check_nonempty();
 
  344    return _Base::back();
 
  347       // 23.2.1.3 modifiers:
 
  349       push_front(const _Tp& __x)
 
  351    _Base::push_front(__x);
 
  352    this->_M_invalidate_all();
 
  356       push_back(const _Tp& __x)
 
  358    _Base::push_back(__x);
 
  359    this->_M_invalidate_all();
 
  362 #if __cplusplus >= 201103L
 
  364       push_front(_Tp&& __x)
 
  365       { emplace_front(std::move(__x)); }
 
  369       { emplace_back(std::move(__x)); }
 
  371       template<typename... _Args>
 
  373         emplace_front(_Args&&... __args)
 
  375      _Base::emplace_front(std::forward<_Args>(__args)...);
 
  376      this->_M_invalidate_all();
 
  379       template<typename... _Args>
 
  381         emplace_back(_Args&&... __args)
 
  383      _Base::emplace_back(std::forward<_Args>(__args)...);
 
  384      this->_M_invalidate_all();
 
  387       template<typename... _Args>
 
  389         emplace(const_iterator __position, _Args&&... __args)
 
  391      __glibcxx_check_insert(__position);
 
  392      _Base_iterator __res = _Base::emplace(__position.base(),
 
  393                        std::forward<_Args>(__args)...);
 
  394      this->_M_invalidate_all();
 
  395      return iterator(__res, this);
 
  400 #if __cplusplus >= 201103L
 
  401       insert(const_iterator __position, const _Tp& __x)
 
  403       insert(iterator __position, const _Tp& __x)
 
  406    __glibcxx_check_insert(__position);
 
  407    _Base_iterator __res = _Base::insert(__position.base(), __x);
 
  408    this->_M_invalidate_all();
 
  409    return iterator(__res, this);
 
  412 #if __cplusplus >= 201103L
 
  414       insert(const_iterator __position, _Tp&& __x)
 
  415       { return emplace(__position, std::move(__x)); }
 
  418       insert(const_iterator __position, initializer_list<value_type> __l)
 
  420    __glibcxx_check_insert(__position);
 
  421    _Base_iterator __res = _Base::insert(__position.base(), __l);
 
  422    this->_M_invalidate_all();
 
  423    return iterator(__res, this);
 
  427 #if __cplusplus >= 201103L
 
  429       insert(const_iterator __position, size_type __n, const _Tp& __x)
 
  431    __glibcxx_check_insert(__position);
 
  432    _Base_iterator __res = _Base::insert(__position.base(), __n, __x);
 
  433    this->_M_invalidate_all();
 
  434    return iterator(__res, this);
 
  438       insert(iterator __position, size_type __n, const _Tp& __x)
 
  440    __glibcxx_check_insert(__position);
 
  441    _Base::insert(__position.base(), __n, __x);
 
  442    this->_M_invalidate_all();
 
  446 #if __cplusplus >= 201103L
 
  447       template<class _InputIterator,
 
  448           typename = std::_RequireInputIter<_InputIterator>>
 
  450         insert(const_iterator __position,
 
  451           _InputIterator __first, _InputIterator __last)
 
  453      __glibcxx_check_insert_range(__position, __first, __last);
 
  454      _Base_iterator __res = _Base::insert(__position.base(),
 
  455                           __gnu_debug::__base(__first),
 
  456                           __gnu_debug::__base(__last));
 
  457      this->_M_invalidate_all();
 
  458      return iterator(__res, this);
 
  461       template<class _InputIterator>
 
  463         insert(iterator __position,
 
  464           _InputIterator __first, _InputIterator __last)
 
  466      __glibcxx_check_insert_range(__position, __first, __last);
 
  467      _Base::insert(__position.base(), __gnu_debug::__base(__first),
 
  468                       __gnu_debug::__base(__last));
 
  469      this->_M_invalidate_all();
 
  474       pop_front() _GLIBCXX_NOEXCEPT
 
  476    __glibcxx_check_nonempty();
 
  477    this->_M_invalidate_if(_Equal(_Base::begin()));
 
  482       pop_back() _GLIBCXX_NOEXCEPT
 
  484    __glibcxx_check_nonempty();
 
  485    this->_M_invalidate_if(_Equal(--_Base::end()));
 
  490 #if __cplusplus >= 201103L
 
  491       erase(const_iterator __position)
 
  493       erase(iterator __position)   
 
  496    __glibcxx_check_erase(__position);
 
  497 #if __cplusplus >= 201103L
 
  498    _Base_const_iterator __victim = __position.base();
 
  500    _Base_iterator __victim = __position.base();
 
  502    if (__victim == _Base::begin() || __victim == _Base::end() - 1)
 
  504        this->_M_invalidate_if(_Equal(__victim));
 
  505        return iterator(_Base::erase(__victim), this);
 
  509        _Base_iterator __res = _Base::erase(__victim);
 
  510        this->_M_invalidate_all();
 
  511        return iterator(__res, this);
 
  516 #if __cplusplus >= 201103L
 
  517       erase(const_iterator __first, const_iterator __last)
 
  519       erase(iterator __first, iterator __last)
 
  522    // _GLIBCXX_RESOLVE_LIB_DEFECTS
 
  523    // 151. can't currently clear() empty container
 
  524    __glibcxx_check_erase_range(__first, __last);
 
  526    if (__first.base() == __last.base())
 
  527 #if __cplusplus >= 201103L
 
  528      return iterator(__first.base()._M_const_cast(), this);
 
  532         else if (__first.base() == _Base::begin()
 
  533         || __last.base() == _Base::end())
 
  535        this->_M_detach_singular();
 
  536        for (_Base_const_iterator __position = __first.base();
 
  537         __position != __last.base(); ++__position)
 
  539        this->_M_invalidate_if(_Equal(__position));
 
  543        return iterator(_Base::erase(__first.base(), __last.base()),
 
  548        this->_M_revalidate_singular();
 
  549        __throw_exception_again;
 
  554        _Base_iterator __res = _Base::erase(__first.base(),
 
  556        this->_M_invalidate_all();
 
  557        return iterator(__res, this);
 
  562       swap(deque& __x) _GLIBCXX_NOEXCEPT
 
  569       clear() _GLIBCXX_NOEXCEPT
 
  572    this->_M_invalidate_all();
 
  576       _M_base() _GLIBCXX_NOEXCEPT       { return *this; }
 
  579       _M_base() const _GLIBCXX_NOEXCEPT { return *this; }
 
  582   template<typename _Tp, typename _Alloc>
 
  584     operator==(const deque<_Tp, _Alloc>& __lhs,
 
  585           const deque<_Tp, _Alloc>& __rhs)
 
  586     { return __lhs._M_base() == __rhs._M_base(); }
 
  588   template<typename _Tp, typename _Alloc>
 
  590     operator!=(const deque<_Tp, _Alloc>& __lhs,
 
  591           const deque<_Tp, _Alloc>& __rhs)
 
  592     { return __lhs._M_base() != __rhs._M_base(); }
 
  594   template<typename _Tp, typename _Alloc>
 
  596     operator<(const deque<_Tp, _Alloc>& __lhs,
 
  597          const deque<_Tp, _Alloc>& __rhs)
 
  598     { return __lhs._M_base() < __rhs._M_base(); }
 
  600   template<typename _Tp, typename _Alloc>
 
  602     operator<=(const deque<_Tp, _Alloc>& __lhs,
 
  603           const deque<_Tp, _Alloc>& __rhs)
 
  604     { return __lhs._M_base() <= __rhs._M_base(); }
 
  606   template<typename _Tp, typename _Alloc>
 
  608     operator>=(const deque<_Tp, _Alloc>& __lhs,
 
  609           const deque<_Tp, _Alloc>& __rhs)
 
  610     { return __lhs._M_base() >= __rhs._M_base(); }
 
  612   template<typename _Tp, typename _Alloc>
 
  614     operator>(const deque<_Tp, _Alloc>& __lhs,
 
  615          const deque<_Tp, _Alloc>& __rhs)
 
  616     { return __lhs._M_base() > __rhs._M_base(); }
 
  618   template<typename _Tp, typename _Alloc>
 
  620     swap(deque<_Tp, _Alloc>& __lhs, deque<_Tp, _Alloc>& __rhs)
 
  621     { __lhs.swap(__rhs); }
 
  623 } // namespace __debug