110 lines
2.4 KiB
C
110 lines
2.4 KiB
C
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// auto_prg.h
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//
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// Same as auto_ptr but for a
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#pragma once
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#include <xstddef>
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template<class _Ty>
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class auto_prg
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{
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public:
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typedef _Ty element_type;
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explicit auto_prg(_Ty *_P = 0) _THROW0()
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: _Owns(_P != 0), _Ptr(_P) {}
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auto_prg(const auto_prg<_Ty>& _Y) _THROW0()
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: _Owns(_Y._Owns), _Ptr(_Y.release()) {}
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auto_prg<_Ty>& operator=(const auto_prg<_Ty>& _Y) _THROW0()
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{if (_Ptr != _Y.get())
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{if (_Owns)
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delete [] _Ptr;
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_Owns = _Y._Owns;
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_Ptr = _Y.release(); }
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else if (_Y._Owns)
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_Owns = true;
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return (*this); }
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auto_prg<_Ty>& operator=(_Ty* _Y) _THROW0()
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{ {if (_Owns)
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delete [] _Ptr;
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_Owns = _Y != 0;
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_Ptr = _Y; }
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return (*this); }
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~auto_prg()
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{if (_Owns)
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delete [] _Ptr; }
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_Ty** operator&() _THROW0()
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{ return &_Ptr; }
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operator _Ty* () const
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{ return _Ptr; }
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_Ty& operator*() const _THROW0()
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{return (*get()); }
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_Ty *operator->() const _THROW0()
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{return (get()); }
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_Ty& operator[] (int ndx) const _THROW0()
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{return *(get() + ndx); }
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_Ty *get() const _THROW0()
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{return (_Ptr); }
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_Ty *release() const _THROW0()
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{((auto_prg<_Ty> *)this)->_Owns = false;
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return (_Ptr); }
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bool Ownership(bool fOwns)
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{ return _Owns = fOwns; }
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protected:
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bool _Owns;
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_Ty *_Ptr;
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};
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template<class _Ty>
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class pointer
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{
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public:
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typedef _Ty element_type;
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explicit pointer(_Ty *_P = 0) _THROW0()
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: _Owns(_P != 0), _Ptr(_P) {}
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pointer(const pointer<_Ty>& _Y) _THROW0()
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: _Owns(_Y._Owns), _Ptr(_Y.release()) {}
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pointer<_Ty>& operator=(const pointer<_Ty>& _Y) _THROW0()
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{if (_Ptr != _Y.get())
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{if (_Owns)
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delete _Ptr;
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_Owns = _Y._Owns;
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_Ptr = _Y.release(); }
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else if (_Y._Owns)
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_Owns = true;
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return (*this); }
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pointer<_Ty>& operator=(_Ty* _Y) _THROW0()
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{ {if (_Owns)
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delete _Ptr;
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_Owns = _Y != 0;
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_Ptr = _Y; }
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return (*this); }
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~pointer()
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{if (_Owns)
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delete _Ptr; }
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_Ty** operator&() _THROW0()
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{ return &_Ptr; }
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operator _Ty* () const
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{ return _Ptr; }
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_Ty& operator*() const _THROW0()
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{return (*get()); }
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_Ty *operator->() const _THROW0()
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{return (get()); }
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_Ty& operator[] (int ndx) const _THROW0()
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{return *(get() + ndx); }
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_Ty *get() const _THROW0()
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{return (_Ptr); }
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_Ty *release() const _THROW0()
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{((pointer<_Ty> *)this)->_Owns = false;
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return (_Ptr); }
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bool Ownership(bool fOwns)
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{ return _Owns = fOwns; }
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protected:
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bool _Owns;
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_Ty *_Ptr;
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};
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