windows-nt/Source/XPSP1/NT/public/sdk/inc/crt/deque

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2020-09-26 03:20:57 -05:00
// deque standard header
#ifndef _DEQUE_
#define _DEQUE_
#include <iterator>
#include <memory>
#include <stdexcept>
#include <xutility>
#ifdef _MSC_VER
#pragma pack(push,8)
#endif /* _MSC_VER */
_STD_BEGIN
#define _DEQUEMAPSIZ 2
#define _DEQUESIZ (4096 < sizeof (_Ty) ? 1 : 4096 / sizeof (_Ty))
// TEMPLATE CLASS deque
template<class _Ty, class _A = allocator<_Ty> >
class deque {
public:
typedef deque<_Ty, _A> _Myt;
typedef _A allocator_type;
typedef _A::size_type size_type;
typedef _A::difference_type difference_type;
typedef _A::pointer _Tptr;
typedef _A::const_pointer _Ctptr;
typedef _POINTER_X(_Tptr, _A) _Mapptr;
typedef _A::reference reference;
typedef _A::const_reference const_reference;
typedef _A::value_type value_type;
// CLASS iterator
class iterator : public _Ranit<_Ty, difference_type> {
public:
friend class deque<_Ty, _A>;
iterator()
: _First(0), _Last(0), _Next(0), _Map(0) {}
iterator(_Tptr _P, _Mapptr _M)
: _First(*_M), _Last(*_M + _DEQUESIZ),
_Next(_P), _Map(_M) {}
reference operator*() const
{return (*_Next); }
_Tptr operator->() const
{return (&**this); }
iterator& operator++()
{if (++_Next == _Last)
{_First = *++_Map;
_Last = _First + _DEQUESIZ;
_Next = _First; }
return (*this); }
iterator operator++(int)
{iterator _Tmp = *this;
++*this;
return (_Tmp); }
iterator& operator--()
{if (_Next == _First)
{_First = *--_Map;
_Last = _First + _DEQUESIZ;
_Next = _Last; }
--_Next;
return (*this); }
iterator operator--(int)
{iterator _Tmp = *this;
--*this;
return (_Tmp); }
iterator& operator+=(difference_type _N)
{_Add(_N);
return (*this); }
iterator& operator-=(difference_type _N)
{return (*this += -_N); }
iterator operator+(difference_type _N) const
{iterator _Tmp = *this;
return (_Tmp += _N); }
iterator operator-(difference_type _N) const
{iterator _Tmp = *this;
return (_Tmp -= _N); }
difference_type operator-(const iterator& _X) const
{return (_Map == _X._Map ? _Next - _X._Next
: _DEQUESIZ * (_Map - _X._Map - 1)
+ (_Next - _First) + (_X._Last - _X._Next)); }
reference operator[](difference_type _N) const
{return (*(*this + _N)); }
bool operator==(const iterator& _X) const
{return (_Next == _X._Next); }
bool operator!=(const iterator& _X) const
{return (!(*this == _X)); }
bool operator<(const iterator& _X) const
{return (_Map < _X._Map
|| _Map == _X._Map && _Next < _X._Next); }
bool operator<=(const iterator& _X) const
{return (!(_X < *this)); }
bool operator>(const iterator& _X) const
{return (_X < *this); }
bool operator>=(const iterator& _X) const
{return (!(*this < _X)); }
protected:
void _Add(difference_type _N)
{difference_type _Off = _N + _Next - _First;
difference_type _Moff = (0 <= _Off)
? _Off / (difference_type)_DEQUESIZ
: -((((difference_type)_DEQUESIZ) - 1 - _Off) / ((difference_type)_DEQUESIZ));
if (_Moff == 0)
_Next += _N;
else
{_Map += _Moff;
_First = *_Map;
_Last = _First + _DEQUESIZ;
_Next = _First + (_Off - _Moff * _DEQUESIZ); }}
_PROTECTED:
_Tptr _First, _Last, _Next;
_Mapptr _Map;
};
// CLASS const_iterator
class const_iterator : public iterator {
public:
const_iterator()
{}
const_iterator(_Tptr _P, _Mapptr _M)
: iterator(_P, _M) {}
const_iterator(const iterator& _X)
: iterator(_X) {}
const_reference operator*() const
{return (*_Next); }
_Ctptr operator->() const
{return (&**this); }
const_iterator& operator++()
{if (++_Next == _Last)
{_First = *++_Map;
_Last = _First + _DEQUESIZ;
_Next = _First; }
return (*this); }
const_iterator operator++(int)
{const_iterator _Tmp = *this;
++*this;
return (_Tmp); }
const_iterator& operator--()
{if (_Next == _First)
{_First = *--_Map;
_Last = _First + _DEQUESIZ;
_Next = _Last; }
--_Next;
return (*this); }
const_iterator operator--(int)
{const_iterator _Tmp = *this;
--*this;
return (_Tmp); }
const_iterator& operator+=(difference_type _N)
{_Add(_N);
return (*this); }
const_iterator& operator-=(difference_type _N)
{return (*this += -_N); }
const_iterator operator+(difference_type _N) const
{iterator _Tmp = *this;
return (_Tmp += _N); }
const_iterator operator-(difference_type _N) const
{iterator _Tmp = *this;
return (_Tmp -= _N); }
difference_type operator-(const const_iterator& _X) const
{return (_Map == _X._Map ? _Next - _X._Next
: _DEQUESIZ * (_Map - _X._Map - 1)
+ (_Next - _First) + (_X._Last - _X._Next)); }
const_reference operator[](difference_type _N) const
{return (*(*this + _N)); }
bool operator==(const const_iterator& _X) const
{return (_Next == _X._Next); }
bool operator!=(const const_iterator& _X) const
{return (!(*this == _X)); }
bool operator<(const const_iterator& _X) const
{return (_Map < _X._Map
|| _Map == _X._Map && _Next < _X._Next); }
bool operator<=(const const_iterator& _X) const
{return (!(_X < *this)); }
bool operator>(const const_iterator& _X) const
{return (_X < *this); }
bool operator>=(const const_iterator& _X) const
{return (!(*this < _X)); }
};
typedef reverse_iterator<const_iterator, value_type,
const_reference, _Ctptr, difference_type>
const_reverse_iterator;
typedef reverse_iterator<iterator, value_type,
reference, _Tptr, difference_type>
reverse_iterator;
explicit deque(const _A& _Al = _A())
: allocator(_Al),
_First(), _Last(), _Map(0), _Mapsize(0), _Size(0)
{}
explicit deque(size_type _N, const _Ty& _V = _Ty(),
const _A& _Al = _A())
: allocator(_Al),
_First(), _Last(), _Map(0), _Mapsize(0), _Size(0)
{insert(begin(), _N, _V); }
deque(const _Myt& _X)
: allocator(_X.allocator),
_First(), _Last(), _Map(0), _Mapsize(0), _Size(0)
{copy(_X.begin(), _X.end(), back_inserter(*this)); }
typedef const_iterator _It;
deque(_It _F, _It _L, const _A& _Al = _A())
: allocator(_Al),
_First(), _Last(), _Map(0), _Mapsize(0), _Size(0)
{copy(_F, _L, back_inserter(*this)); }
~deque()
{while (!empty())
pop_front(); }
_Myt& operator=(const _Myt& _X)
{if (this != &_X)
{iterator _S;
if (_X.size() <= size())
{_S = copy(_X.begin(), _X.end(), begin());
erase(_S, end()); }
else
{const_iterator _Sx = _X.begin() + size();
_S = copy(_X.begin(), _Sx, begin());
copy(_Sx, _X.end(), inserter(*this, _S)); }}
return (*this); }
iterator begin()
{return (_First); }
const_iterator begin() const
{return ((const_iterator)_First); }
iterator end()
{return (_Last); }
const_iterator end() const
{return ((const_iterator)_Last); }
reverse_iterator rbegin()
{return (reverse_iterator(end())); }
const_reverse_iterator rbegin() const
{return (const_reverse_iterator(end())); }
reverse_iterator rend()
{return (reverse_iterator(begin())); }
const_reverse_iterator rend() const
{return (const_reverse_iterator(begin())); }
void resize(size_type _N, _Ty _X = _Ty())
{if (size() < _N)
insert(end(), _N - size(), _X);
else if (_N < size())
erase(begin() + _N, end()); }
size_type size() const
{return (_Size); }
size_type max_size() const
{return (allocator.max_size()); }
bool empty() const
{return (size() == 0); }
_A get_allocator() const
{return (allocator); }
const_reference at(size_type _P) const
{if (size() <= _P)
_Xran();
return (*(begin() + _P)); }
reference at(size_type _P)
{if (size() <= _P)
_Xran();
return (*(begin() + _P)); }
const_reference operator[](size_type _P) const
{return (*(begin() + _P)); }
reference operator[](size_type _P)
{return (*(begin() + _P)); }
reference front()
{return (*begin()); }
const_reference front() const
{return (*begin()); }
reference back()
{return (*(end() - 1)); }
const_reference back() const
{return (*(end() - 1)); }
void push_front(const _Ty& _X)
{if (empty() || _First._Next == _First._First)
_Buyfront();
allocator.construct(--_First._Next, _X);
++_Size; }
void pop_front()
{allocator.destroy(_First._Next++);
--_Size;
if (empty() || _First._Next == _First._Last)
_Freefront(); }
void push_back(const _Ty& _X)
{if (empty() || _Last._Next == _Last._Last)
{_Buyback();
allocator.construct(_Last._Next++, _X); }
else if (_Last._Next + 1 == _Last._Last)
{allocator.construct(_Last._Next++, _X);
_Buyback(); }
else
allocator.construct(_Last._Next++, _X);
++_Size; }
void pop_back()
{
if (_Last._Next == _Last._First)
_Freeback();
if (!empty())
allocator.destroy(--_Last._Next);
--_Size;
if ( empty())
_Freeback(); }
void assign(_It _F, _It _L)
{erase(begin(), end());
insert(begin(), _F, _L); }
void assign(size_type _N, const _Ty& _X = _Ty())
{erase(begin(), end());
insert(begin(), _N, _X); }
iterator insert(iterator _P, const _Ty& _X = _Ty())
{if (_P == begin())
{push_front(_X);
return (begin()); }
else if (_P == end())
{push_back(_X);
return (end() - 1); }
else
{iterator _S;
size_type _Off = _P - begin();
if (_Off < size() / 2)
{push_front(front());
_S = begin() + _Off;
copy(begin() + 2, _S + 1, begin() + 1); }
else
{push_back(back());
_S = begin() + _Off;
copy_backward(_S, end() - 2, end() - 1); }
*_S = _X;
return (_S); }}
void insert(iterator _P, size_type _M, const _Ty& _X)
{iterator _S;
size_type _I;
size_type _Off = _P - begin();
size_type _Rem = _Size - _Off;
if (_Off < _Rem)
if (_Off < _M)
{for (_I = _M - _Off; 0 < _I; --_I)
push_front(_X);
for (_I = _Off; 0 < _I; --_I)
push_front(begin()[_M - 1]);
_S = begin() + _M;
fill(_S, _S + _Off, _X); }
else
{for (_I = _M; 0 < _I; --_I)
push_front(begin()[_M - 1]);
_S = begin() + _M;
copy(_S + _M, _S + _Off, _S);
fill(begin() + _Off, _S + _Off, _X); }
else
if (_Rem < _M)
{for (_I = _M - _Rem; 0 < _I; --_I)
push_back(_X);
for (_I = 0; _I < _Rem; ++_I)
push_back(begin()[_Off + _I]);
_S = begin() + _Off;
fill(_S, _S + _Rem, _X); }
else
{for (_I = 0; _I < _M; ++_I)
push_back(begin()[_Off + _Rem - _M + _I]);
_S = begin() + _Off;
copy_backward(_S, _S + _Rem - _M, _S + _Rem);
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.
*/