124 lines
2.0 KiB
C++
124 lines
2.0 KiB
C++
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//
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// Smart Pointer Class for GDD
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// ( automatically takes care of referencing / unreferening a gdd each time that it is used )
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//
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// Author: Jeff Hill
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//
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#ifndef smartGDDPointer_h
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#define smartGDDPointer_h
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//
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// smartGDDPointer
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//
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// smart pointer class which auto ref/unrefs the GDD
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//
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class smartGDDPointer {
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public:
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smartGDDPointer () :
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pValue (0) {}
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smartGDDPointer (gdd &valueIn) :
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pValue (&valueIn)
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{
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int gddStatus;
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gddStatus = this->pValue->reference();
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assert(!gddStatus);
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}
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smartGDDPointer (gdd *pValueIn) :
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pValue (pValueIn)
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{
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if (this->pValue!=NULL) {
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int gddStatus;
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gddStatus = this->pValue->reference();
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assert(!gddStatus);
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}
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}
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smartGDDPointer (const smartGDDPointer &ptrIn) :
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pValue (ptrIn.pValue)
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{
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if (this->pValue!=NULL) {
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int gddStatus;
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gddStatus = this->pValue->reference();
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assert(!gddStatus);
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}
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}
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~smartGDDPointer ()
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{
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if (this->pValue!=NULL) {
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int gddStatus;
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gddStatus = this->pValue->unreference();
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assert (!gddStatus);
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}
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}
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void set (gdd *pNewValue)
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{
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int gddStatus;
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//
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// dont change the ref count (and
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// potentially unref a gdd that we are
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// still using if the pointer isnt changing
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//
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if (this->pValue==pNewValue) {
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return;
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}
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if (this->pValue!=NULL) {
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gddStatus = this->pValue->unreference();
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assert (!gddStatus);
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}
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this->pValue = pNewValue;
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if (this->pValue!=NULL) {
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gddStatus = this->pValue->reference();
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assert (!gddStatus);
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}
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}
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smartGDDPointer operator = (gdd *rhs)
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{
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set (rhs);
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return *this;
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}
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smartGDDPointer operator = (smartGDDPointer &rhs)
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{
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set (rhs.pValue);
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return *this;
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}
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#if 0
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int operator == (const smartGDDPointer &rhs) const
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{
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return this->pValue==rhs.pValue;
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}
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int operator != (const smartGDDPointer &rhs) const
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{
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return this->pValue!=rhs.pValue;
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}
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#endif
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gdd *operator -> () const
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{
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return this->pValue;
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}
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gdd & operator * () const
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{
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return *this->pValue;
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}
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operator gdd * () const
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{
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return this->pValue;
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}
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private:
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gdd *pValue;
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};
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#endif // smartGDDPointer_h
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