X-Git-Url: https://git.cweiske.de/enigma2.git/blobdiff_plain/ddc3964ed95d01e72229dc9af968a327cd84e56c..633c730e5feed206333c5174d53c6384c08047b2:/lib/base/smartptr.h

diff --git a/lib/base/smartptr.h b/lib/base/smartptr.h
index 906bba69..6c3dbc2f 100644
--- a/lib/base/smartptr.h
+++ b/lib/base/smartptr.h
@@ -3,6 +3,9 @@
 
 #include "object.h"
 #include <stdio.h>
+#include <lib/python/swig.h>
+
+inline void ptrAssert(void *p) { if (!p) *(unsigned long*)0=0; }
 
 template<class T>
 class ePtr
@@ -53,7 +56,84 @@ public:
 	
 	T* grabRef() { if (!ptr) return 0; ptr->AddRef(); return ptr; }
 	T* &ptrref() { assert(!ptr); return ptr; }
-	T* operator->() const { assert(ptr); return ptr; }
+	T* operator->() const { ptrAssert(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;
+	}
+	
+	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->() const { ptrAssert(ptr); return ptr; }
 	operator T*() const { return this->ptr; }
 };
 
@@ -101,13 +181,13 @@ public:
 	}
 	
 	
-	ePtrHelper<T> operator->() { assert(ptr); return ePtrHelper<T>(ptr); }
+	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 { assert(ptr); return ptr; }
+	const T* operator->() const { ptrAssert(ptr); return ptr; }
 };
 #endif