Second Life viewer sources 1.13.2.12

1 files changed, 100 insertions, 0 deletions

diff --git a/linden/indra/llcommon/lldepthstack.h b/linden/indra/llcommon/lldepthstack.h
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+/** 
+ * @file lldepthstack.h
+ * @brief Declaration of the LLDepthStack class
+ *
+ * Copyright (c) 2001-2007, Linden Research, Inc.
+ * 
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab.  Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlife.com/developers/opensource/gplv2
+ * 
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at http://secondlife.com/developers/opensource/flossexception
+ * 
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ * 
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ */
+
+#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