vector

pwlib源码库

// vector standard header

#if     _MSC_VER > 1000
#pragma once
#endif

/* This file is for use only in conjunction with a valid license for
Microsoft Visual C++ V5.0. Microsoft Corporation is in no way involved
with the production or release of this file. The file is offered on an
``as is'' basis.

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ABOUT THE SUITABILITY OF THIS FILE, EITHER EXPRESS OR IMPLIED,
INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT. DINKUMWARE, LTD.
AND P.J. PLAUGER SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY
LICENSEE AS A RESULT OF USING THIS FILE.

For additional information, contact Dinkumware, Ltd. (+1-888-4DINKUM or
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 */

#ifndef _VECTOR_
#define _VECTOR_
#include <climits>
#include <memory>
#include <stdexcept>
#include <xutility>

#ifdef  _MSC_VER
#pragma pack(push,8)
#endif  /* _MSC_VER */
_STD_BEGIN
		// TEMPLATE CLASS vector
template<class _Ty, class _A = allocator<_Ty> >
	class vector {
public:
	typedef vector<_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 _A::reference reference;
	typedef _A::const_reference const_reference;
	typedef _A::value_type value_type;
	typedef _Tptr iterator;
	typedef _Ctptr const_iterator;
	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 vector(const _A& _Al = _A())
		: allocator(_Al), _First(0), _Last(0), _End(0) {}
	explicit vector(size_type _N, const _Ty& _V = _Ty(),
		const _A& _Al = _A())
		: allocator(_Al)
		{_First = allocator.allocate(_N, (void *)0);
		_Ufill(_First, _N, _V);
		_Last = _First + _N;
		_End = _Last; }
	vector(const _Myt& _X)
		: allocator(_X.allocator)
		{_First = allocator.allocate(_X.size(), (void *)0);
		_Last = _Ucopy(_X.begin(), _X.end(), _First);
		_End = _Last; }
	typedef const_iterator _It;
	vector(_It _F, _It _L, const _A& _Al = _A())
		: allocator(_Al), _First(0), _Last(0), _End(0)
		{insert(begin(), _F, _L); }
	~vector()
		{_Destroy(_First, _Last);
		allocator.deallocate(_First, _End - _First);
		_First = 0, _Last = 0, _End = 0; }
	_Myt& operator=(const _Myt& _X)
		{if (this == &_X)
			;
		else if (_X.size() <= size())
			{iterator _S = copy(_X.begin(), _X.end(), _First);
			_Destroy(_S, _Last);
			_Last = _First + _X.size(); }
		else if (_X.size() <= capacity())
			{const_iterator _S = _X.begin() + size();
			copy(_X.begin(), _S, _First);
			_Ucopy(_S, _X.end(), _Last);
			_Last = _First + _X.size(); }
		else
			{_Destroy(_First, _Last);
			allocator.deallocate(_First, _End - _First);
			_First = allocator.allocate(_X.size(), (void *)0);
			_Last = _Ucopy(_X.begin(), _X.end(),
				_First);
			_End = _Last; }
		return (*this); }
	void reserve(size_type _N)
		{if (capacity() < _N)
			{iterator _S = allocator.allocate(_N, (void *)0);
			_Ucopy(_First, _Last, _S);
			_Destroy(_First, _Last);
			allocator.deallocate(_First, _End - _First);
			_End = _S + _N;
			_Last = _S + size();
			_First = _S; }}
	size_type capacity() const
		{return (_First == 0 ? 0 : _End - _First); }
	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, const _Ty& _X = _Ty())
		{if (size() < _N)
			insert(end(), _N - size(), _X);
		else if (_N < size())
			erase(begin() + _N, end()); }
	size_type size() const
		{return (_First == 0 ? 0 : _Last - _First); }
	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_back(const _Ty& _X)
		{insert(end(), _X); }
	void pop_back()
		{erase(end() - 1); }
	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())
		{size_type _O = _P - begin();
		insert(_P, 1, _X);
		return (begin() + _O); }
	void insert(iterator _P, size_type _M, const _Ty& _X)
		{if (_End - _Last < _M)
			{size_type _N = size() + (_M < size() ? size() : _M);
			iterator _S = allocator.allocate(_N, (void *)0);
			iterator _Q = _Ucopy(_First, _P, _S);
			_Ufill(_Q, _M, _X);
			_Ucopy(_P, _Last, _Q + _M);
			_Destroy(_First, _Last);
                        size_type _O = size();
			allocator.deallocate(_First, _End - _First);
			_End = _S + _N;
			_Last = _S + _O + _M;
			_First = _S; }
		else if (_Last - _P < _M)
			{_Ucopy(_P, _Last, _P + _M);
			_Ufill(_Last, _M - (_Last - _P), _X);
			fill(_P, _Last, _X);
			_Last += _M; }
		else if (0 < _M)
			{_Ucopy(_Last - _M, _Last, _Last);
			copy_backward(_P, _Last - _M, _Last);
			fill(_P, _P + _M, _X);
			_Last += _M; }}
	void insert(iterator _P, _It _F, _It _L)
		{size_type _M = 0;
		_Distance(_F, _L, _M);
		if (_End - _Last < _M)
			{size_type _N = size() + (_M < size() ? size() : _M);
			iterator _S = allocator.allocate(_N, (void *)0);
			iterator _Q = _Ucopy(_First, _P, _S);
			_Q = _Ucopy(_F, _L, _Q);
			_Ucopy(_P, _Last, _Q);
			_Destroy(_First, _Last);
                        size_type _O = size();
			allocator.deallocate(_First, _End - _First);
			_End = _S + _N;
			_Last = _S + _O + _M;
			_First = _S; }
		else if (_Last - _P < _M)
			{_Ucopy(_P, _Last, _P + _M);
			_Ucopy(_F + (_Last - _P), _L, _Last);
			copy(_F, _F + (_Last - _P), _P);
			_Last += _M; }
		else if (0 < _M)
			{_Ucopy(_Last - _M, _Last, _Last);
			copy_backward(_P, _Last - _M, _Last);
			copy(_F, _L, _P);
			_Last += _M; }}
	iterator erase(iterator _P)
		{copy(_P + 1, end(), _P);
		_Destroy(_Last - 1, _Last);
		--_Last;
		return (_P); }
	iterator erase(iterator _F, iterator _L)
		{iterator _S = copy(_L, end(), _F);
		_Destroy(_S, end());
		_Last = _S;
		return (_F); }
	void clear()
		{erase(begin(), end()); }
	bool _Eq(const _Myt& _X) const
		{return (size() == _X.size()
			&& equal(begin(), end(), _X.begin())); }
	bool _Lt(const _Myt& _X) const
		{return (lexicographical_compare(begin(), end(),
			_X.begin(), _X.end())); }
	void swap(_Myt& _X)
		{if (allocator == _X.allocator)
			{std::swap(_First, _X._First);
			std::swap(_Last, _X._Last);
			std::swap(_End, _X._End); }
		else
			{_Myt _Ts = *this; *this = _X, _X = _Ts; }}
	friend void swap(_Myt& _X, _Myt& _Y)
		{_X.swap(_Y); }
protected:
	void _Destroy(iterator _F, iterator _L)
		{for (; _F != _L; ++_F)
			allocator.destroy(_F); }
	iterator _Ucopy(const_iterator _F, const_iterator _L,
		iterator _P)
		{for (; _F != _L; ++_P, ++_F)
			allocator.construct(_P, *_F);
		return (_P); }
	void _Ufill(iterator _F, size_type _N, const _Ty &_X)
		{for (; 0 < _N; --_N, ++_F)
			allocator.construct(_F, _X); }
	void _Xran() const
		{_THROW(out_of_range, "invalid vector<T> subscript"); }
	_A allocator;
	iterator _First, _Last, _End;
	};
		// CLASS vector<_Bool, allocator>
typedef unsigned int _Vbase;
const int _VBITS = CHAR_BIT * sizeof (_Vbase);
typedef allocator<_Vbase> _Bool_allocator;
class vector<_Bool, _Bool_allocator> {
public:
	typedef _Bool_allocator _A;
	typedef _Bool _Ty;
	typedef vector<_Ty, _A> _Myt;
	typedef vector<_Vbase, _A> _Vbtype;
	typedef _A allocator_type;
	typedef _A::size_type size_type;
	typedef _A::difference_type difference_type;

		// CLASS reference
	class reference {
	public:
		reference()
			: _Mask(0), _Ptr(0) {}
		reference(size_t _O, _Vbase *_P)
			: _Mask((_Vbase)1 << _O), _Ptr(_P) {}
		reference& operator=(const reference& _X)
			{return (*this = bool(_X)); }
		reference& operator=(bool _V)
			{if (_V)
				*_Ptr |= _Mask;
			else
				*_Ptr &= ~_Mask;
			return (*this); }
		void flip()
			{*_Ptr ^= _Mask; }
		bool operator~() const
			{return (!bool(*this)); }
		operator bool() const
			{return ((*_Ptr & _Mask) != 0); }
	protected:
		_Vbase _Mask, *_Ptr;
		};

	typedef const reference const_reference;
	typedef bool value_type;
		// CLASS const_iterator
	class iterator;
	class const_iterator : public _Ranit<_Bool, difference_type> {
	public:
		const_iterator()
			: _Off(0), _Ptr(0) {}
		const_iterator(size_t _O, const _Vbase *_P)
			: _Off(_O), _Ptr((_Vbase*)_P) {}
		const_iterator(const iterator& _X)
			: _Off(_X._Off), _Ptr(_X._Ptr) {}
		const_reference operator*() const
			{return (const_reference(_Off, _Ptr)); }
		const_iterator& operator++()
			{_Inc();
			return (*this); }
		const_iterator operator++(int)
			{const_iterator _Tmp = *this;
			_Inc();