Added a StackDeleter class that also empties the stack and deletes the items.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25381 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/kernel/util/Stack.h

@@ -1,12 +1,13 @@
-/* Stack - a template stack class (plus some handy methods)
+/*
- *
+ * Copyright 2001-2008, Axel Dörfler, [email protected].
- * Copyright 2001-2005, Axel Dörfler, [email protected].
  * This file may be used under the terms of the MIT License.
  */
 #ifndef KERNEL_UTIL_STACK_H
 #define KERNEL_UTIL_STACK_H
 
 
+#include <stdlib.h>
+
 #include <SupportDefs.h>
 
 
@@ -75,4 +76,33 @@ template<class T> class Stack {
 		int32	fMax;
 };
 
+template<typename T> class StackDeleter {
+public:
+	StackDeleter(Stack<T>* stack)
+		: fStack(stack)
+	{
+	}
+
+	~StackDeleter()
+	{
+		if (fStack == NULL)
+			return;
+		
+		T item;
+		while (fStack->Pop(&item)) {
+			delete item;
+		}
+
+		delete fStack;
+	}
+
+	void Detach()
+	{
+		fStack = NULL;
+	}
+
+private:
+	Stack<T>*	fStack;
+};
+
 #endif	/* KERNEL_UTIL_STACK_H */