X-Git-Url: https://git.cweiske.de/enigma2.git/blobdiff_plain/d63d2c3c6cbbd574dda4f8b00ebe6c661735edd5..9925392e576717cc0df070ace822a6f392808bb7:/lib/base/smartptr.h

diff --git a/lib/base/smartptr.h b/lib/base/smartptr.h
index 029fd1dc..814d7457 100644
--- a/lib/base/smartptr.h
+++ b/lib/base/smartptr.h
@@ -3,6 +3,7 @@
 
 #include "object.h"
 #include <stdio.h>
+#include <lib/python/swig.h>
 
 template<class T>
 class ePtr
@@ -27,34 +28,165 @@ public:
 	}
 	ePtr &operator=(T *c)
 	{
+		if (c)
+			c->AddRef();
 		if (ptr)
 			ptr->Release();
 		ptr=c;
-		if (ptr)
-			ptr->AddRef();
 		return *this;
 	}
 	
 	ePtr &operator=(ePtr<T> &c)
 	{
+		if (c.ptr)
+			c.ptr->AddRef();
 		if (ptr)
 			ptr->Release();
 		ptr=c.ptr;
+		return *this;
+	}
+	
+	~ePtr()
+	{
+		if (ptr)
+			ptr->Release();
+	}
+	
+	T* grabRef() { if (!ptr) return 0; ptr->AddRef(); return ptr; }
+	T* &ptrref() { assert(!ptr); return ptr; }
+	T* operator->() const { assert(ptr); return ptr; }
+	operator T*() const { return this->ptr; }
+	
+	operator bool() 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;
 	}
 	
-	~ePtr()
+	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();
+		}
 	}
+	
+	T* grabRef() { if (!ptr) return 0; ptr->AddRef(); ptr->AddUse(); return ptr; }
 	T* &ptrref() { assert(!ptr); return ptr; }
-	T* operator->() { assert(ptr); return ptr; }
-	const T* operator->() const { assert(ptr); return ptr; }
+	T* operator->() const { assert(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->() { assert(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 { assert(ptr); return ptr; }
+};
+#endif
+
 #endif