lldepthstack.h
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- /**
- * @file lldepthstack.h
- * @brief Declaration of the LLDepthStack class
- *
- * $LicenseInfo:firstyear=2001&license=viewergpl$
- *
- * Copyright (c) 2001-2010, Linden Research, Inc.
- *
- * Second Life Viewer Source Code
- * 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://secondlifegrid.net/programs/open_source/licensing/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://secondlifegrid.net/programs/open_source/licensing/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.
- * $/LicenseInfo$
- */
- #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