94 lines
2.2 KiB
C++
Executable File
94 lines
2.2 KiB
C++
Executable File
/**
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* @file lldlinked.h
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* @brief Declaration of the LLDLinked class.
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*
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* $LicenseInfo:firstyear=2001&license=viewerlgpl$
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* Second Life Viewer Source Code
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* Copyright (C) 2010, Linden Research, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation;
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* version 2.1 of the License only.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
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* $/LicenseInfo$
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*/
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#ifndef LL_LLDLINKED_H
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#define LL_LLDLINKED_H
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template <class Type> class LLDLinked
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{
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LLDLinked* mNextp;
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LLDLinked* mPrevp;
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public:
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Type* getNext() { return (Type*)mNextp; }
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Type* getPrev() { return (Type*)mPrevp; }
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Type* getFirst() { return (Type*)mNextp; }
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void init()
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{
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mNextp = mPrevp = NULL;
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}
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void unlink()
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{
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if (mPrevp) mPrevp->mNextp = mNextp;
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if (mNextp) mNextp->mPrevp = mPrevp;
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}
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LLDLinked() { mNextp = mPrevp = NULL; }
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virtual ~LLDLinked() { unlink(); }
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virtual void deleteAll()
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{
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Type *curp = getFirst();
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while(curp)
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{
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Type *nextp = curp->getNext();
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curp->unlink();
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delete curp;
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curp = nextp;
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}
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}
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void relink(Type &after)
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{
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LLDLinked *afterp = (LLDLinked*)&after;
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afterp->mPrevp = this;
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mNextp = afterp;
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}
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virtual void append(Type& after)
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{
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LLDLinked *afterp = (LLDLinked*)&after;
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afterp->mPrevp = this;
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afterp->mNextp = mNextp;
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if (mNextp) mNextp->mPrevp = afterp;
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mNextp = afterp;
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}
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virtual void insert(Type& before)
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{
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LLDLinked *beforep = (LLDLinked*)&before;
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beforep->mNextp = this;
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beforep->mPrevp = mPrevp;
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if (mPrevp) mPrevp->mNextp = beforep;
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mPrevp = beforep;
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}
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virtual void put(Type& obj) { append(obj); }
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};
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#endif
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