--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/javauis/m2g_qt/inc/JcfAutoPtr.h	Fri Oct 15 12:29:39 2010 +0300
@@ -0,0 +1,147 @@
+/*
+* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:
+*
+*/
+
+#ifndef JCFAUTOPTR_H
+#define JCFAUTOPTR_H
+
+#include <e32base.h>
+
+/**
+ * Functionality of this auto ptr class is same as stl's auto_ptr class
+ * except this works with cleanup stack.
+ * Implementation of the example operation with "traditional" way:
+ * void bar()
+ *   {
+ *   CFoo* myFoo = CFoo::NewL();
+ *   CleanupStack::PushL(myFoo);
+ *   myFoo->DoSomeThingL();
+ *   CleanupStack::PopAndDestroy(1); //myFoo
+ *   }
+ * Implementation of the same function with auto pointer class:
+ * void bar()
+ *   {
+ *   jcfcommon::auto_ptr<CFoo> myFoo(CFoo::NewL());
+ *   myFoo->DoSomeThingL();
+ *   }
+ *
+ */
+namespace jcfcommon
+{
+
+template<class X> class auto_ptr
+{
+public:
+    typedef X element_type;
+
+    auto_ptr(X* aPtr = 0): iPtr(aPtr),iCloseCalledFlag(EFalse)
+    {
+        CleanupStack::PushL(TCleanupItem(Close, (void*)this));
+    }
+
+    /**
+     * Copy constructor was commented out because current
+     * implementation doesn't support situation where auto_ptr
+     * is returned as return value of the function. Problem is that
+     * orig. auto_ptr is deleted when getBar() operation has been
+     * executed and this deleted local reference has been stored to the
+     * cleanup stack.
+     * E.g:
+     * void foo()
+     *   {
+     *   auto_ptr<bar> barObj = getBar();
+     *       .
+     *       .
+     *       .
+     *   User::Leave(KErrNotFound);
+     *   }
+     */
+    /*auto_ptr(auto_ptr& aPtr): iPtr(aPtr.release())
+    {
+      CleanupStack::PushL(TCleanupItem(Close, (void*)this));
+    }*/
+
+    auto_ptr<X>& operator=(auto_ptr<X>& aRhs)
+    {
+        if (&aRhs != this)
+        {
+            delete iPtr;
+            iPtr = aRhs.release();
+        }
+        return (*this);
+    }
+
+    ~auto_ptr()
+    {
+        if (!iCloseCalledFlag)
+        {
+            CleanupStack::Pop();
+            delete iPtr;
+        }
+    }
+
+    X& operator *() const
+    {
+        return *iPtr;
+    }
+    X* operator ->() const
+    {
+        return iPtr;
+    }
+
+    X* get() const
+    {
+        return iPtr;
+    }
+
+    X* release()
+    {
+        X* result = iPtr;
+        iPtr = 0;
+        return result;
+    }
+
+    void reset(X* aPtr = 0)
+    {
+        if (aPtr != iPtr)
+        {
+            delete iPtr;
+            iPtr = aPtr;
+        }
+    }
+
+private:
+    static void Close(void* aPtr)
+    {
+        auto_ptr<X>* self = (auto_ptr<X>*)aPtr;
+        delete self->iPtr;
+        self->iPtr = 0;
+        self->iCloseCalledFlag = ETrue;
+    }
+
+    //Not implemented.
+    auto_ptr(auto_ptr& aPtr);
+
+private:
+    X* iPtr;
+    TBool iCloseCalledFlag;
+};
+
+}//end jcfcommon
+
+#endif // JCFAUTOPTR_H
+
+