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#ifndef __smartptr_h
#define __smartptr_h
#include "object.h"
#include <stdio.h>
#include <string.h>
#include <lib/python/swig.h>
inline void ptrAssert(void *p) { if (!p) *(unsigned long*)0=0; }
template<class T>
class ePtr
{
protected:
T *ptr;
char m_ptrStr[sizeof(void*)*2+1];
void updatePtrStr()
{
if (ptr) {
if (sizeof(void*) > 4)
sprintf(m_ptrStr, "%llx", (unsigned long long)ptr);
else
sprintf(m_ptrStr, "%lx", (unsigned long)ptr);
}
else
strcpy(m_ptrStr, "NIL");
}
public:
T &operator*() { return *ptr; }
ePtr(): ptr(0)
{
}
ePtr(T *c): ptr(c)
{
if (c)
c->AddRef();
updatePtrStr();
}
ePtr(const ePtr &c): ptr(c.ptr)
{
if (ptr)
ptr->AddRef();
updatePtrStr();
}
ePtr &operator=(T *c)
{
if (c)
c->AddRef();
if (ptr)
ptr->Release();
ptr=c;
updatePtrStr();
return *this;
}
ePtr &operator=(ePtr<T> &c)
{
if (c.ptr)
c.ptr->AddRef();
if (ptr)
ptr->Release();
ptr=c.ptr;
updatePtrStr();
return *this;
}
~ePtr()
{
if (ptr)
ptr->Release();
}
char *getPtrString()
{
return m_ptrStr;
}
#ifndef SWIG
T* grabRef() { if (!ptr) return 0; ptr->AddRef(); return ptr; }
T* &ptrref() { ASSERT(!ptr); return ptr; }
operator bool() const { return !!this->ptr; }
#endif
T* operator->() const { ptrAssert(ptr); return ptr; }
operator T*() const { return this->ptr; }
};
template<class T>
class eUsePtr
{
protected:
T *ptr;
public:
T &operator*() { return *ptr; }
eUsePtr(): ptr(0)
{
}
eUsePtr(T *c): ptr(c)
{
if (c)
{
c->AddRef();
c->AddUse();
}
}
eUsePtr(const eUsePtr &c)
{
ptr=c.ptr;
if (ptr)
{
ptr->AddRef();
ptr->AddUse();
}
}
eUsePtr &operator=(T *c)
{
if (c)
{
c->AddRef();
c->AddUse();
}
if (ptr)
{
ptr->ReleaseUse();
ptr->Release();
}
ptr=c;
return *this;
}
eUsePtr &operator=(eUsePtr<T> &c)
{
if (c.ptr)
{
c.ptr->AddRef();
c.ptr->AddUse();
}
if (ptr)
{
ptr->ReleaseUse();
ptr->Release();
}
ptr=c.ptr;
return *this;
}
~eUsePtr()
{
if (ptr)
{
ptr->ReleaseUse();
ptr->Release();
}
}
#ifndef SWIG
T* grabRef() { if (!ptr) return 0; ptr->AddRef(); ptr->AddUse(); return ptr; }
T* &ptrref() { ASSERT(!ptr); return ptr; }
#endif
T* operator->() const { ptrAssert(ptr); return ptr; }
operator T*() const { return this->ptr; }
};
#ifndef SWIG
template<class T>
class eMutablePtr: public ePtr<T>
{
/* read doc/iObject about the ePtrHelper */
template<class T1>
class ePtrHelper
{
T1 *m_obj;
public:
inline ePtrHelper(T1 *obj): m_obj(obj)
{
m_obj->AddRef();
}
inline ~ePtrHelper()
{
m_obj->Release();
}
inline T1* operator->() { return m_obj; }
};
protected:
T *ptr;
public:
eMutablePtr(): ePtr<T>(0)
{
}
eMutablePtr(T *c): ePtr<T>(c)
{
}
eMutablePtr(const eMutablePtr &c): ePtr<T>(c)
{
}
eMutablePtr &operator=(T *c)
{
ePtr<T>::operator=(c);
return *this;
}
ePtrHelper<T> operator->() { ptrAssert(ptr); return ePtrHelper<T>(ptr); }
/* for const objects, we don't need the helper, as they can't */
/* be changed outside the program flow. at least this is */
/* what the compiler assumes, so in case you're using const */
/* eMutablePtrs note that they have to be const. */
const T* operator->() const { ptrAssert(ptr); return ptr; }
};
#endif
#endif
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