Print done when done.

1 files changed, 81 insertions, 0 deletions

diff --git a/indra/llcommon/lldepthstack.h b/indra/llcommon/lldepthstack.h
new file mode 100644
index 0000000000..6b259ec9b0
--- /dev/null
+++ b/indra/llcommon/lldepthstack.h
@@ -0,0 +1,81 @@
+/** 
+ * @file lldepthstack.h
+ * @brief Declaration of the LLDepthStack class
+ *
+ * Copyright (c) 2001-$CurrentYear$, Linden Research, Inc.
+ * $License$
+ */
+
+#ifndef LL_LLDEPTHSTACK_H
+#define LL_LLDEPTHSTACK_H
+
+#include "linked_lists.h"
+
+template <class DATA_TYPE> class LLDepthStack
+{
+private:
+	LLLinkedList<DATA_TYPE> mStack;
+	U32						mCurrentDepth;
+	U32						mMaxDepth;
+
+public:
+	LLDepthStack() : mCurrentDepth(0), mMaxDepth(0) {}
+	~LLDepthStack()	{}
+
+	void setDepth(U32 depth)
+	{
+		mMaxDepth = depth;
+	}
+
+	U32 getDepth(void) const
+	{
+		return mCurrentDepth;
+	}
+
+	void push(DATA_TYPE *data)
+	{ 
+		if (mCurrentDepth < mMaxDepth)
+		{
+			mStack.addData(data); 
+			mCurrentDepth++;
+		}
+		else
+		{
+			// the last item falls off stack and is deleted
+			mStack.getLastData();
+			mStack.deleteCurrentData();	
+			mStack.addData(data);
+		}
+	}
+	
+	DATA_TYPE *pop()
+	{ 
+		DATA_TYPE *tempp = mStack.getFirstData(); 
+		if (tempp)
+		{
+			mStack.removeCurrentData(); 
+			mCurrentDepth--;
+		}
+		return tempp; 
+	}
+	
+	DATA_TYPE *check()
+	{ 
+		DATA_TYPE *tempp = mStack.getFirstData(); 
+		return tempp; 
+	}
+	
+	void deleteAllData()
+	{ 
+		mCurrentDepth = 0;
+		mStack.deleteAllData(); 
+	}
+	
+	void removeAllNodes()
+	{ 
+		mCurrentDepth = 0;
+		mStack.removeAllNodes(); 
+	}
+};
+
+#endif