556 lines
16 KiB
Plaintext
556 lines
16 KiB
Plaintext
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// deque standard header
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#ifndef _DEQUE_
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#define _DEQUE_
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#include <iterator>
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#include <memory>
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#include <stdexcept>
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#include <xutility>
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#ifdef _MSC_VER
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#pragma pack(push,8)
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#endif /* _MSC_VER */
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_STD_BEGIN
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#define _DEQUEMAPSIZ 2
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#define _DEQUESIZ (4096 < sizeof (_Ty) ? 1 : 4096 / sizeof (_Ty))
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// TEMPLATE CLASS deque
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template<class _Ty, class _A = allocator<_Ty> >
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class deque {
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public:
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typedef deque<_Ty, _A> _Myt;
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typedef _A allocator_type;
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typedef _A::size_type size_type;
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typedef _A::difference_type difference_type;
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typedef _A::pointer _Tptr;
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typedef _A::const_pointer _Ctptr;
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typedef _POINTER_X(_Tptr, _A) _Mapptr;
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typedef _A::reference reference;
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typedef _A::const_reference const_reference;
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typedef _A::value_type value_type;
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// CLASS iterator
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class iterator : public _Ranit<_Ty, difference_type> {
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public:
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friend class deque<_Ty, _A>;
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iterator()
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: _First(0), _Last(0), _Next(0), _Map(0) {}
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iterator(_Tptr _P, _Mapptr _M)
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: _First(*_M), _Last(*_M + _DEQUESIZ),
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_Next(_P), _Map(_M) {}
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reference operator*() const
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{return (*_Next); }
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_Tptr operator->() const
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{return (&**this); }
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iterator& operator++()
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{if (++_Next == _Last)
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{_First = *++_Map;
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_Last = _First + _DEQUESIZ;
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_Next = _First; }
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return (*this); }
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iterator operator++(int)
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{iterator _Tmp = *this;
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++*this;
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return (_Tmp); }
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iterator& operator--()
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{if (_Next == _First)
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{_First = *--_Map;
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_Last = _First + _DEQUESIZ;
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_Next = _Last; }
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--_Next;
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return (*this); }
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iterator operator--(int)
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{iterator _Tmp = *this;
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--*this;
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return (_Tmp); }
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iterator& operator+=(difference_type _N)
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{_Add(_N);
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return (*this); }
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iterator& operator-=(difference_type _N)
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{return (*this += -_N); }
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iterator operator+(difference_type _N) const
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{iterator _Tmp = *this;
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return (_Tmp += _N); }
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iterator operator-(difference_type _N) const
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{iterator _Tmp = *this;
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return (_Tmp -= _N); }
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difference_type operator-(const iterator& _X) const
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{return (_Map == _X._Map ? _Next - _X._Next
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: _DEQUESIZ * (_Map - _X._Map - 1)
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+ (_Next - _First) + (_X._Last - _X._Next)); }
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reference operator[](difference_type _N) const
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{return (*(*this + _N)); }
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bool operator==(const iterator& _X) const
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{return (_Next == _X._Next); }
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bool operator!=(const iterator& _X) const
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{return (!(*this == _X)); }
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bool operator<(const iterator& _X) const
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{return (_Map < _X._Map
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|| _Map == _X._Map && _Next < _X._Next); }
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bool operator<=(const iterator& _X) const
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{return (!(_X < *this)); }
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bool operator>(const iterator& _X) const
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{return (_X < *this); }
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bool operator>=(const iterator& _X) const
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{return (!(*this < _X)); }
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protected:
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void _Add(difference_type _N)
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{difference_type _Off = _N + _Next - _First;
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difference_type _Moff = (0 <= _Off)
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? _Off / _DEQUESIZ
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: -((_DEQUESIZ - 1 - _Off) / _DEQUESIZ);
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if (_Moff == 0)
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_Next += _N;
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else
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{_Map += _Moff;
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_First = *_Map;
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_Last = _First + _DEQUESIZ;
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_Next = _First + (_Off - _Moff * _DEQUESIZ); }}
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_PROTECTED:
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_Tptr _First, _Last, _Next;
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_Mapptr _Map;
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};
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// CLASS const_iterator
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class const_iterator : public iterator {
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public:
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const_iterator()
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{}
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const_iterator(_Tptr _P, _Mapptr _M)
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: iterator(_P, _M) {}
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const_iterator(const iterator& _X)
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: iterator(_X) {}
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const_reference operator*() const
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{return (*_Next); }
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_Ctptr operator->() const
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{return (&**this); }
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const_iterator& operator++()
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{if (++_Next == _Last)
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{_First = *++_Map;
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_Last = _First + _DEQUESIZ;
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_Next = _First; }
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return (*this); }
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const_iterator operator++(int)
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{const_iterator _Tmp = *this;
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++*this;
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return (_Tmp); }
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const_iterator& operator--()
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{if (_Next == _First)
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{_First = *--_Map;
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_Last = _First + _DEQUESIZ;
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_Next = _Last; }
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--_Next;
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return (*this); }
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const_iterator operator--(int)
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{const_iterator _Tmp = *this;
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--*this;
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return (_Tmp); }
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const_iterator& operator+=(difference_type _N)
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{_Add(_N);
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return (*this); }
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const_iterator& operator-=(difference_type _N)
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{return (*this += -_N); }
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const_iterator operator+(difference_type _N) const
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{iterator _Tmp = *this;
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return (_Tmp += _N); }
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const_iterator operator-(difference_type _N) const
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{iterator _Tmp = *this;
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return (_Tmp -= _N); }
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difference_type operator-(const const_iterator& _X) const
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{return (_Map == _X._Map ? _Next - _X._Next
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: _DEQUESIZ * (_Map - _X._Map - 1)
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+ (_Next - _First) + (_X._Last - _X._Next)); }
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const_reference operator[](difference_type _N) const
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{return (*(*this + _N)); }
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bool operator==(const const_iterator& _X) const
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{return (_Next == _X._Next); }
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bool operator!=(const const_iterator& _X) const
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{return (!(*this == _X)); }
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bool operator<(const const_iterator& _X) const
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{return (_Map < _X._Map
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|| _Map == _X._Map && _Next < _X._Next); }
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bool operator<=(const const_iterator& _X) const
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{return (!(_X < *this)); }
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bool operator>(const const_iterator& _X) const
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{return (_X < *this); }
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bool operator>=(const const_iterator& _X) const
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{return (!(*this < _X)); }
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};
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typedef reverse_iterator<const_iterator, value_type,
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const_reference, _Ctptr, difference_type>
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const_reverse_iterator;
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typedef reverse_iterator<iterator, value_type,
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reference, _Tptr, difference_type>
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reverse_iterator;
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explicit deque(const _A& _Al = _A())
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: allocator(_Al),
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_First(), _Last(), _Map(0), _Mapsize(0), _Size(0)
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{}
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explicit deque(size_type _N, const _Ty& _V = _Ty(),
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const _A& _Al = _A())
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: allocator(_Al),
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_First(), _Last(), _Map(0), _Mapsize(0), _Size(0)
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{insert(begin(), _N, _V); }
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deque(const _Myt& _X)
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: allocator(_X.allocator),
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_First(), _Last(), _Map(0), _Mapsize(0), _Size(0)
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{copy(_X.begin(), _X.end(), back_inserter(*this)); }
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typedef const_iterator _It;
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deque(_It _F, _It _L, const _A& _Al = _A())
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: allocator(_Al),
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_First(), _Last(), _Map(0), _Mapsize(0), _Size(0)
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{copy(_F, _L, back_inserter(*this)); }
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~deque()
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{while (!empty())
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pop_front(); }
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_Myt& operator=(const _Myt& _X)
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{if (this != &_X)
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{iterator _S;
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if (_X.size() <= size())
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{_S = copy(_X.begin(), _X.end(), begin());
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erase(_S, end()); }
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else
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{const_iterator _Sx = _X.begin() + size();
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_S = copy(_X.begin(), _Sx, begin());
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copy(_Sx, _X.end(), inserter(*this, _S)); }}
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return (*this); }
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iterator begin()
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{return (_First); }
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const_iterator begin() const
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{return ((const_iterator)_First); }
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iterator end()
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{return (_Last); }
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const_iterator end() const
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{return ((const_iterator)_Last); }
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reverse_iterator rbegin()
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{return (reverse_iterator(end())); }
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const_reverse_iterator rbegin() const
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{return (const_reverse_iterator(end())); }
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reverse_iterator rend()
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{return (reverse_iterator(begin())); }
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const_reverse_iterator rend() const
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{return (const_reverse_iterator(begin())); }
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void resize(size_type _N, _Ty _X = _Ty())
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{if (size() < _N)
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insert(end(), _N - size(), _X);
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else if (_N < size())
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erase(begin() + _N, end()); }
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size_type size() const
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{return (_Size); }
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size_type max_size() const
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{return (allocator.max_size()); }
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bool empty() const
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{return (size() == 0); }
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_A get_allocator() const
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{return (allocator); }
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const_reference at(size_type _P) const
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{if (size() <= _P)
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_Xran();
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return (*(begin() + _P)); }
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reference at(size_type _P)
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{if (size() <= _P)
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_Xran();
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return (*(begin() + _P)); }
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const_reference operator[](size_type _P) const
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{return (*(begin() + _P)); }
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reference operator[](size_type _P)
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{return (*(begin() + _P)); }
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reference front()
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{return (*begin()); }
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const_reference front() const
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{return (*begin()); }
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reference back()
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{return (*(end() - 1)); }
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const_reference back() const
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{return (*(end() - 1)); }
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void push_front(const _Ty& _X)
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{if (empty() || _First._Next == _First._First)
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_Buyfront();
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allocator.construct(--_First._Next, _X);
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++_Size; }
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void pop_front()
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{allocator.destroy(_First._Next++);
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--_Size;
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if (empty() || _First._Next == _First._Last)
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_Freefront(); }
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void push_back(const _Ty& _X)
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{if (empty() || _Last._Next == _Last._Last)
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{_Buyback();
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allocator.construct(_Last._Next++, _X); }
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else if (_Last._Next + 1 == _Last._Last)
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{allocator.construct(_Last._Next++, _X);
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_Buyback(); }
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else
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allocator.construct(_Last._Next++, _X);
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++_Size; }
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void pop_back()
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{
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if (_Last._Next == _Last._First)
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_Freeback();
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if (!empty())
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allocator.destroy(--_Last._Next);
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--_Size;
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if ( empty())
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_Freeback(); }
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void assign(_It _F, _It _L)
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{erase(begin(), end());
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insert(begin(), _F, _L); }
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void assign(size_type _N, const _Ty& _X = _Ty())
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{erase(begin(), end());
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insert(begin(), _N, _X); }
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iterator insert(iterator _P, const _Ty& _X = _Ty())
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{if (_P == begin())
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{push_front(_X);
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return (begin()); }
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else if (_P == end())
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{push_back(_X);
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return (end() - 1); }
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else
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{iterator _S;
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size_type _Off = _P - begin();
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if (_Off < size() / 2)
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{push_front(front());
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_S = begin() + _Off;
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copy(begin() + 2, _S + 1, begin() + 1); }
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else
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{push_back(back());
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_S = begin() + _Off;
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copy_backward(_S, end() - 2, end() - 1); }
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*_S = _X;
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return (_S); }}
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void insert(iterator _P, size_type _M, const _Ty& _X)
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{iterator _S;
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size_type _I;
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size_type _Off = _P - begin();
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size_type _Rem = _Size - _Off;
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if (_Off < _Rem)
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if (_Off < _M)
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{for (_I = _M - _Off; 0 < _I; --_I)
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push_front(_X);
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for (_I = _Off; 0 < _I; --_I)
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push_front(begin()[_M - 1]);
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_S = begin() + _M;
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fill(_S, _S + _Off, _X); }
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else
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{for (_I = _M; 0 < _I; --_I)
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push_front(begin()[_M - 1]);
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_S = begin() + _M;
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copy(_S + _M, _S + _Off, _S);
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fill(begin() + _Off, _S + _Off, _X); }
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else
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if (_Rem < _M)
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{for (_I = _M - _Rem; 0 < _I; --_I)
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push_back(_X);
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for (_I = 0; _I < _Rem; ++_I)
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push_back(begin()[_Off + _I]);
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_S = begin() + _Off;
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fill(_S, _S + _Rem, _X); }
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else
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{for (_I = 0; _I < _M; ++_I)
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push_back(begin()[_Off + _Rem - _M + _I]);
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_S = begin() + _Off;
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copy_backward(_S, _S + _Rem - _M, _S + _Rem);
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fill(_S, _S + _M, _X); }}
|
||
|
|
void insert(iterator _P, _It _F, _It _L)
|
||
|
|
{size_type _M = 0;
|
||
|
|
_Distance(_F, _L, _M);
|
||
|
|
size_type _I;
|
||
|
|
size_type _Off = _P - begin();
|
||
|
|
size_type _Rem = _Size - _Off;
|
||
|
|
if (_Off < _Rem)
|
||
|
|
if (_Off < _M)
|
||
|
|
{_It _Qx = _F;
|
||
|
|
advance(_Qx, _M - _Off);
|
||
|
|
for (_It _Q = _Qx; _F != _Q; )
|
||
|
|
push_front(*--_Q);
|
||
|
|
for (_I = _Off; 0 < _I; --_I)
|
||
|
|
push_front(begin()[_M - 1]);
|
||
|
|
copy(_Qx, _L, begin() + _M); }
|
||
|
|
else
|
||
|
|
{for (_I = _M; 0 < _I; --_I)
|
||
|
|
push_front(begin()[_M - 1]);
|
||
|
|
iterator _S = begin() + _M;
|
||
|
|
copy(_S + _M, _S + _Off, _S);
|
||
|
|
copy(_F, _L, begin() + _Off); }
|
||
|
|
else
|
||
|
|
if (_Rem < _M)
|
||
|
|
{_It _Qx = _F;
|
||
|
|
advance(_Qx, _Rem);
|
||
|
|
for (_It _Q = _Qx; _Q != _L; ++_Q)
|
||
|
|
push_back(*_Q);
|
||
|
|
for (_I = 0; _I < _Rem; ++_I)
|
||
|
|
push_back(begin()[_Off + _I]);
|
||
|
|
copy(_F, _Qx, begin() + _Off); }
|
||
|
|
else
|
||
|
|
{for (_I = 0; _I < _M; ++_I)
|
||
|
|
push_back(begin()[_Off + _Rem - _M + _I]);
|
||
|
|
iterator _S = begin() + _Off;
|
||
|
|
copy_backward(_S, _S + _Rem - _M, _S + _Rem);
|
||
|
|
copy(_F, _L, _S); }}
|
||
|
|
iterator erase(iterator _P)
|
||
|
|
{return (erase(_P, _P + 1)); }
|
||
|
|
iterator erase(iterator _F, iterator _L)
|
||
|
|
{size_type _N = _L - _F;
|
||
|
|
size_type _M = _F - begin();
|
||
|
|
if (_M < end() - _L)
|
||
|
|
{copy_backward(begin(), _F, _L);
|
||
|
|
for (; 0 < _N; --_N)
|
||
|
|
pop_front(); }
|
||
|
|
else
|
||
|
|
{copy(_L, end(), _F);
|
||
|
|
for (; 0 < _N; --_N)
|
||
|
|
pop_back(); }
|
||
|
|
return (_M == 0 ? begin() : begin() + _M); }
|
||
|
|
void clear()
|
||
|
|
{erase(begin(), end()); }
|
||
|
|
void swap(_Myt& _X)
|
||
|
|
{if (allocator == _X.allocator)
|
||
|
|
{std::swap(_First, _X._First);
|
||
|
|
std::swap(_Last, _X._Last);
|
||
|
|
std::swap(_Map, _X._Map);
|
||
|
|
std::swap(_Mapsize, _X._Mapsize);
|
||
|
|
std::swap(_Size, _X._Size); }
|
||
|
|
else
|
||
|
|
{_Myt _Ts = *this; *this = _X, _X = _Ts; }}
|
||
|
|
friend void swap(_Myt& _X, _Myt& _Y)
|
||
|
|
{_X.swap(_Y); }
|
||
|
|
protected:
|
||
|
|
void _Buyback()
|
||
|
|
{_Tptr _P = allocator.allocate(_DEQUESIZ, (void *)0);
|
||
|
|
if (empty())
|
||
|
|
{_Mapsize = _DEQUEMAPSIZ;
|
||
|
|
size_type _N = _Mapsize / 2;
|
||
|
|
_Getmap();
|
||
|
|
_Setptr(_Map + _N, _P);
|
||
|
|
_First = iterator(_P + _DEQUESIZ / 2, _Map + _N);
|
||
|
|
_Last = _First; }
|
||
|
|
else if (_Last._Map < _Map + (_Mapsize - 1))
|
||
|
|
{_Setptr(++_Last._Map, _P);
|
||
|
|
_Last = iterator(_P, _Last._Map); }
|
||
|
|
else
|
||
|
|
{difference_type _I = _Last._Map - _First._Map + 1;
|
||
|
|
_Mapptr _M = _Growmap(2 * _I);
|
||
|
|
_Setptr(_M + _I, _P);
|
||
|
|
_First = iterator(_First._Next, _M);
|
||
|
|
_Last = iterator(_P, _M + _I); }}
|
||
|
|
void _Buyfront()
|
||
|
|
{_Tptr _P = allocator.allocate(_DEQUESIZ, (void *)0);
|
||
|
|
if (empty())
|
||
|
|
{_Mapsize = _DEQUEMAPSIZ;
|
||
|
|
size_type _N = _Mapsize / 2;
|
||
|
|
_Getmap();
|
||
|
|
_Setptr(_Map + _N, _P);
|
||
|
|
_First = iterator(_P + (_DEQUESIZ / 2 + 1),
|
||
|
|
_Map + _N);
|
||
|
|
_Last = _First; }
|
||
|
|
else if (_Map < _First._Map)
|
||
|
|
{_Setptr(--_First._Map, _P);
|
||
|
|
_First = iterator(_P + _DEQUESIZ, _First._Map); }
|
||
|
|
else if (_Last._Map == _First._Map)
|
||
|
|
{_Setptr(_Last._Map++, *_First._Map);
|
||
|
|
_Setptr(_First._Map+1, *_First._Map);
|
||
|
|
_Setptr(_First._Map, _P);
|
||
|
|
_First = iterator(_P + _DEQUESIZ, _First._Map); }
|
||
|
|
else
|
||
|
|
{difference_type _I = _Last._Map - _First._Map + 1;
|
||
|
|
_Mapptr _M = _Growmap(2 * _I);
|
||
|
|
_Setptr(--_M, _P);
|
||
|
|
_First = iterator(_P + _DEQUESIZ, _M);
|
||
|
|
_Last = iterator(_Last._Next, _M + _I); }}
|
||
|
|
void _Freeback()
|
||
|
|
{_Freeptr(_Last._Map--);
|
||
|
|
if (empty())
|
||
|
|
{
|
||
|
|
if(_First._Map == _Last._Map)
|
||
|
|
_Freeptr(_First._Map);
|
||
|
|
_First = iterator();
|
||
|
|
_Last = _First;
|
||
|
|
_Freemap(); }
|
||
|
|
else
|
||
|
|
_Last = iterator(*_Last._Map + _DEQUESIZ,
|
||
|
|
_Last._Map); }
|
||
|
|
void _Freefront()
|
||
|
|
{_Freeptr(_First._Map++);
|
||
|
|
if (empty())
|
||
|
|
{_First = iterator();
|
||
|
|
_Last = _First;
|
||
|
|
_Freemap(); }
|
||
|
|
else
|
||
|
|
_First = iterator(*_First._Map, _First._Map); }
|
||
|
|
void _Xran() const
|
||
|
|
{_THROW(out_of_range, "invalid deque<T> subscript"); }
|
||
|
|
void _Freemap()
|
||
|
|
{allocator.deallocate(_Map, _Mapsize); }
|
||
|
|
void _Freeptr(_Mapptr _M)
|
||
|
|
{allocator.deallocate(*_M, _DEQUESIZ); }
|
||
|
|
void _Getmap()
|
||
|
|
{_Map = (_Mapptr)allocator._Charalloc(
|
||
|
|
_Mapsize * sizeof (_Tptr)); }
|
||
|
|
_Mapptr _Growmap(size_type _Newsize)
|
||
|
|
{_Mapptr _M = (_Mapptr)allocator._Charalloc(
|
||
|
|
_Newsize * sizeof (_Tptr));
|
||
|
|
copy(_First._Map, _Last._Map + 1,
|
||
|
|
_M + _Newsize / 4);
|
||
|
|
allocator.deallocate(_Map, _Mapsize);
|
||
|
|
_Map = _M;
|
||
|
|
_Mapsize = _Newsize;
|
||
|
|
return (_M + _Newsize / 4); }
|
||
|
|
void _Setptr(_Mapptr _M, _Tptr _P)
|
||
|
|
{*_M = _P; }
|
||
|
|
_A allocator;
|
||
|
|
iterator _First, _Last;
|
||
|
|
_Mapptr _Map;
|
||
|
|
size_type _Mapsize, _Size;
|
||
|
|
};
|
||
|
|
// deque TEMPLATE OPERATORS
|
||
|
|
template<class _Ty, class _A> inline
|
||
|
|
bool operator==(const deque<_Ty, _A>& _X,
|
||
|
|
const deque<_Ty, _A>& _Y)
|
||
|
|
{return (_X.size() == _Y.size()
|
||
|
|
&& equal(_X.begin(), _X.end(), _Y.begin())); }
|
||
|
|
template<class _Ty, class _A> inline
|
||
|
|
bool operator!=(const deque<_Ty, _A>& _X,
|
||
|
|
const deque<_Ty, _A>& _Y)
|
||
|
|
{return (!(_X == _Y)); }
|
||
|
|
template<class _Ty, class _A> inline
|
||
|
|
bool operator<(const deque<_Ty, _A>& _X,
|
||
|
|
const deque<_Ty, _A>& _Y)
|
||
|
|
{return (lexicographical_compare(_X.begin(), _X.end(),
|
||
|
|
_Y.begin(), _Y.end())); }
|
||
|
|
template<class _Ty, class _A> inline
|
||
|
|
bool operator<=(const deque<_Ty, _A>& _X,
|
||
|
|
const deque<_Ty, _A>& _Y)
|
||
|
|
{return (!(_Y < _X)); }
|
||
|
|
template<class _Ty, class _A> inline
|
||
|
|
bool operator>(const deque<_Ty, _A>& _X,
|
||
|
|
const deque<_Ty, _A>& _Y)
|
||
|
|
{return (_Y < _X); }
|
||
|
|
template<class _Ty, class _A> inline
|
||
|
|
bool operator>=(const deque<_Ty, _A>& _X,
|
||
|
|
const deque<_Ty, _A>& _Y)
|
||
|
|
{return (!(_X < _Y)); }
|
||
|
|
_STD_END
|
||
|
|
#ifdef _MSC_VER
|
||
|
|
#pragma pack(pop)
|
||
|
|
#endif /* _MSC_VER */
|
||
|
|
|
||
|
|
#endif /* _DEQUE_ */
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Copyright (c) 1995 by P.J. Plauger. ALL RIGHTS RESERVED.
|
||
|
|
* Consult your license regarding permissions and restrictions.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*
|
||
|
|
* This file is derived from software bearing the following
|
||
|
|
* restrictions:
|
||
|
|
*
|
||
|
|
* Copyright (c) 1994
|
||
|
|
* Hewlett-Packard Company
|
||
|
|
*
|
||
|
|
* Permission to use, copy, modify, distribute and sell this
|
||
|
|
* software and its documentation for any purpose is hereby
|
||
|
|
* granted without fee, provided that the above copyright notice
|
||
|
|
* appear in all copies and that both that copyright notice and
|
||
|
|
* this permission notice appear in supporting documentation.
|
||
|
|
* Hewlett-Packard Company makes no representations about the
|
||
|
|
* suitability of this software for any purpose. It is provided
|
||
|
|
* "as is" without express or implied warranty.
|
||
|
|
*/
|