Source code of Windows XP (NT5)
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270 lines
5.9 KiB

#pragma once
#ifndef _STLMEM_H_
#define _STLMEM_H_
//#include <memory>
#include <stlxmem.h>
#ifdef _MSC_VER
#pragma pack(push,8)
#endif /* _MSC_VER */
// TEMPLATE OPERATOR new
template<class _Ty> inline
void *operator new(size_t _N, std::allocator<_Ty>& _Al)
{
return (_Al._Charalloc(_N));
}
_STD_BEGIN
// TEMPLATE FUNCTION get_temporary_buffer
template<class _Ty> inline
pair<_Ty _FARQ *, _PDFT>
get_temporary_buffer(_PDFT _N, _Ty _FARQ *)
{
_Ty _FARQ *_P;
for (_P = 0; 0 < _N; _N /= 2)
if ((_P = (_Ty _FARQ *)operator new(
(_SIZT)_N * sizeof (_Ty), nothrow)) != 0)
break;
return (pair<_Ty _FARQ *, _PDFT>(_P, _N));
}
// TEMPLATE FUNCTION return_temporary_buffer
template<class _Ty> inline
void return_temporary_buffer(_Ty *_P)
{
operator delete(_P);
}
// TEMPLATE FUNCTION uninitialized_copy
template<class _II, class _FI> inline
_FI uninitialized_copy(_II _F, _II _L, _FI _X)
{
for (; _F != _L; ++_X, ++_F)
_Construct(&*_X, *_F);
return (_X);
}
// TEMPLATE FUNCTION uninitialized_fill
template<class _FI, class _Ty> inline
void uninitialized_fill(_FI _F, _FI _L, const _Ty& _X)
{
for (; _F != _L; ++_F)
_Construct(&*_F, _X);
}
// TEMPLATE FUNCTION uninitialized_fill_n
template<class _FI, class _S, class _Ty> inline
void uninitialized_fill_n(_FI _F, _S _N, const _Ty& _X)
{
for (; 0 < _N; --_N, ++_F)
_Construct(&*_F, _X);
}
// TEMPLATE CLASS raw_storage_iterator
template<class _OI, class _Ty>
class raw_storage_iterator : public iterator<output_iterator_tag, void, void>
{
public:
typedef _OI iterator_type;
typedef _Ty element_type;
explicit raw_storage_iterator(_OI _X) : _Next(_X)
{
}
raw_storage_iterator<_OI, _Ty>& operator*()
{
return (*this);
}
raw_storage_iterator<_OI, _Ty>& operator=(const _Ty& _X)
{
_Construct(&*_Next, _X);
return (*this);
}
raw_storage_iterator<_OI, _Ty>& operator++()
{
++_Next;
return (*this);
}
raw_storage_iterator<_OI, _Ty> operator++(int)
{
raw_storage_iterator<_OI, _Ty> _Ans = *this;
++_Next;
return (_Ans);
}
private:
_OI _Next;
};
// TEMPLATE CLASS _Temp_iterator
template<class _Ty>
class _Temp_iterator : public iterator<output_iterator_tag, void, void>
{
public:
typedef _Ty _FARQ *_Pty;
_Temp_iterator(_PDFT _N = 0)
{
pair<_Pty, _PDFT> _Pair =
get_temporary_buffer(_N, (_Pty)0);
_Buf._Begin = _Pair.first;
_Buf._Cur = _Pair.first;
_Buf._Hiwater = _Pair.first;
_Buf._Len = _Pair.second;
_Pb = &_Buf;
}
_Temp_iterator(const _Temp_iterator<_Ty>& _X)
{
_Buf._Begin = 0;
_Buf._Cur = 0;
_Buf._Hiwater = 0;
_Buf._Len = 0;
*this = _X;
}
~_Temp_iterator()
{
if (_Buf._Begin != 0)
{
for (_Pty _F = _Buf._Begin;
_F != _Buf._Hiwater; ++_F)
_Destroy(&*_F);
return_temporary_buffer(_Buf._Begin);
}
}
_Temp_iterator<_Ty>& operator=(const _Temp_iterator<_Ty>& _X)
{
_Pb = _X._Pb;
return (*this);
}
_Temp_iterator<_Ty>& operator=(const _Ty& _V)
{
if (_Pb->_Cur < _Pb->_Hiwater)
*_Pb->_Cur++ = _V;
else
{
_Construct(&*_Pb->_Cur, _V);
_Pb->_Hiwater = ++_Pb->_Cur;
}
return (*this);
}
_Temp_iterator<_Ty>& operator*()
{
return (*this);
}
_Temp_iterator<_Ty>& operator++()
{
return (*this);
}
_Temp_iterator<_Ty>& operator++(int)
{
return (*this);
}
_Temp_iterator<_Ty>& _Init()
{
_Pb->_Cur = _Pb->_Begin;
return (*this);
}
_Pty _First() const
{
return (_Pb->_Begin);
}
_Pty _Last() const
{
return (_Pb->_Cur);
}
_PDFT _Maxlen() const
{
return (_Pb->_Len);
}
private:
struct _Bufpar
{
_Pty _Begin;
_Pty _Cur;
_Pty _Hiwater;
_PDFT _Len;
} _Buf, *_Pb;
};
// TEMPLATE CLASS auto_ptr
template<class _Ty>
class auto_ptr
{
public:
typedef _Ty element_type;
explicit auto_ptr(_Ty *_P = 0) _THROW0() : _Owns(_P != 0), _Ptr(_P)
{
}
auto_ptr(const auto_ptr<_Ty>& _Y) _THROW0()
: _Owns(_Y._Owns), _Ptr(_Y.release())
{
}
auto_ptr<_Ty>& operator=(const auto_ptr<_Ty>& _Y) _THROW0()
{
if (_Ptr != _Y.get())
{
if (_Owns)
delete _Ptr;
_Owns = _Y._Owns;
_Ptr = _Y.release();
}
else if (_Y._Owns)
_Owns = true;
return (*this);
}
~auto_ptr()
{
if (_Owns)
delete _Ptr;
}
_Ty& operator*() const _THROW0()
{
return (*get());
}
_Ty *operator->() const _THROW0()
{
return (get());
}
_Ty *get() const _THROW0()
{
return (_Ptr);
}
_Ty *release() const _THROW0()
{
((auto_ptr<_Ty> *)this)->_Owns = false;
return (_Ptr);
}
private:
bool _Owns;
_Ty *_Ptr;
};
_STD_END
#ifdef _MSC_VER
#pragma pack(pop)
#endif /* _MSC_VER */
#endif /* _STLMEM_H_ */
/*
* 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.
*/