mirror of https://github.com/tongzx/nt5src
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
66 lines
2.7 KiB
66 lines
2.7 KiB
// Copyright (C) 1999 Microsoft Corporation. All rights reserved.
|
|
|
|
//This pointer class wraps a pointer so that delete happens automatically when the TSmartPointer goes out of scope
|
|
//If this is not the behavior you want then don't use this wrapper class
|
|
|
|
|
|
#ifndef __SMARTPOINTER_H__
|
|
#define __SMARTPOINTER_H__
|
|
|
|
#ifndef ASSERT
|
|
#define ASSERT(x)
|
|
#endif
|
|
|
|
//Destructor is NOT virtual bacause I don't see why anyone would ever treat a TSmartPointerArray as a TSmartPointer
|
|
|
|
#pragma warning(disable : 4284)//It's OK to use this SmartPointer class with native types; but the -> operator doesn't make sense. Compiler warns of this.
|
|
|
|
template <class T> class TSmartPointer
|
|
{
|
|
public:
|
|
TSmartPointer() : m_p(0) {}
|
|
TSmartPointer(T* p) : m_p(p) {}
|
|
~TSmartPointer() { Delete();}
|
|
|
|
operator T*() const { return m_p; }
|
|
T& operator*() const { ASSERT(0!=m_p); return *m_p; }
|
|
|
|
T** operator&() { ASSERT(0==m_p); return &m_p; }
|
|
T* operator->() const { ASSERT(0!=m_p); return m_p; }
|
|
T* operator=(T* p) { return (m_p = p); }
|
|
bool operator!() const { return (0 == m_p); }
|
|
bool operator==(const T* p) const { return m_p == p; }
|
|
|
|
void Delete() { delete m_p; m_p=0; }
|
|
|
|
T* m_p;
|
|
private:
|
|
TSmartPointer(const TSmartPointer<T>& p) {}//This is private bacause it doesn't make sense to automatically clean up a copy of the pointer
|
|
};
|
|
|
|
|
|
template <class T> class TSmartPointerArray : public TSmartPointer<T>
|
|
{
|
|
public:
|
|
TSmartPointerArray(T *p) : TSmartPointer<T>(p) {}
|
|
TSmartPointerArray() : TSmartPointer<T>() {}
|
|
~TSmartPointerArray() { Delete();}
|
|
|
|
T* operator++() { ASSERT(0!=m_p); return ++m_p; }
|
|
T* operator+=(int n) { ASSERT(0!=m_p); return (m_p+=n); }
|
|
T* operator-=(int n) { ASSERT(0!=m_p); return (m_p-=n); }
|
|
T* operator--() { ASSERT(0!=m_p); return --m_p; }
|
|
// T& operator[](int n) const { ASSERT(0!=m_p); return m_p[n]; }
|
|
bool operator<(const T* p) const { return m_p < p; }
|
|
bool operator>(const T* p) const { return m_p > p; }
|
|
bool operator<=(const T* p) const { return m_p <= p; }
|
|
bool operator>=(const T* p) const { return m_p >= p; }
|
|
T* operator=(T p[]) { return (m_p = p); }
|
|
|
|
void Delete() { delete [] m_p; m_p=0; }
|
|
private:
|
|
TSmartPointerArray(const TSmartPointerArray<T>& p) {}//This is private bacause it doesn't make sense to automatically clean up a copy of the pointer
|
|
};
|
|
|
|
|
|
#endif //__SMARTPOINTER_H__
|