OW_AutoPtr.hpp

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#ifndef OW_AUTOPTR_HPP_INCLUDE_GUARD_
#define OW_AUTOPTR_HPP_INCLUDE_GUARD_
#include "OW_config.h"

namespace OW_NAMESPACE
{

// TODO: Rename this
template <class X> class AutoPtr
{
private:
   X* _ptr;
   
   // no copying
   AutoPtr(const AutoPtr& a);
   AutoPtr& operator= (const AutoPtr& a);

public:
   typedef X element_type;
   explicit AutoPtr(X* p = 0);
   AutoPtr& operator= (X* p);
   ~AutoPtr();
   X& operator*() const;
   X* operator->() const;
   X* get() const;
   X* release();
   void reset(X* p=0);
};

template <class X>
inline AutoPtr<X>::AutoPtr(X* p) : _ptr(p) {}

template <class X>
inline AutoPtr<X>& AutoPtr<X>::operator= (X* p)
{
   if (p != _ptr)
   {
      reset();
      _ptr = p;
   }
   return *this;
}

template <class X>
inline AutoPtr<X>::~AutoPtr()
{
   typedef char type_must_be_complete[sizeof(X)];
   delete _ptr;
}

template <class X>
inline X& AutoPtr<X>::operator*() const {  return *_ptr;}

template <class X>
inline X* AutoPtr<X>::operator->() const {  return _ptr;}

template <class X>
inline X* AutoPtr<X>::get() const {  return _ptr;}

template <class X>
inline X* AutoPtr<X>::release()
{
   X* rval = _ptr;
   _ptr = 0;
   return rval;
}

template <class X>
inline void AutoPtr<X>::reset(X* p)
{
   delete _ptr;
   _ptr = p;
}

template <class X> class AutoPtrVec
{
private:
   X* _ptr;
   
   // no copying
   AutoPtrVec(const AutoPtrVec& a);
   AutoPtrVec& operator= (const AutoPtrVec& a);

public:
   typedef X element_type;
   explicit AutoPtrVec(X* p = 0);
   AutoPtrVec& operator= (X* p);
   ~AutoPtrVec();
   X& operator*() const;
   X* operator->() const;
   X& operator[](unsigned i);
   const X& operator[](unsigned i) const;
   X* get() const;
   X* release();
   void reset(X* p=0);
};


template <class X>
inline AutoPtrVec<X>::AutoPtrVec(X* p) : _ptr(p) {}

template <class X>
AutoPtrVec<X>& AutoPtrVec<X>::operator= (X* p)
{
   if (p != _ptr)
   {
      reset();
      _ptr = p;
   }
   return *this;
}

template <class X>
AutoPtrVec<X>::~AutoPtrVec()
{
   typedef char type_must_be_complete[sizeof(X)];
   delete [] _ptr;
}

template <class X>
X& AutoPtrVec<X>::operator*() const {  return *_ptr;}

template <class X>
X* AutoPtrVec<X>::operator->() const {  return _ptr;}

template <class X>
X& AutoPtrVec<X>::operator[](unsigned i) { return _ptr[i]; }

template <class X>
const X& AutoPtrVec<X>::operator[](unsigned i) const { return _ptr[i]; }

template <class X>
X* AutoPtrVec<X>::get() const {  return _ptr;}

template <class X>
X* AutoPtrVec<X>::release()
{
   X* rval = _ptr;
   _ptr = 0;
   return rval;
}

template <class X>
void AutoPtrVec<X>::reset(X* p)
{
   delete [] _ptr;
   _ptr = p;
}

} // end namespace OW_NAMESPACE

#endif

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