pjs/xpcom/ds/nsSharedBufferList.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/*
* The contents of this file are subject to the Mozilla Public
* License Version 1.1 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is Mozilla strings.
*
* The Initial Developer of the Original Code is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 2000 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
* Scott Collins <scc@mozilla.org> (original author)
*
*/
#ifndef nsSharedBufferList_h___
#define nsSharedBufferList_h___
#include "nsBufferHandle.h"
/**
*
*/
class nsSharedBufferList
{
public:
class Buffer
: public nsSharedBufferHandle<PRUnichar>
{
friend class nsSharedBufferList;
public:
private:
Buffer* mPrev;
Buffer* mNext;
};
struct Position
{
nsSharedBufferList::Buffer* mBuffer;
nsSharedBufferList::PRUnichar* mPosInBuffer;
};
public:
nsSharedBufferList() : mFirstBuffer(0), mLastBuffer(0), mTotalLength(0) { }
virtual ~nsSharedBufferList();
private:
// pass by value is not supported
nsSharedBufferList( const nsSharedBufferList& ); // NOT TO BE IMPLEMENTED
void operator=( const nsSharedBufferList& ); // NOT TO BE IMPLEMENTED
public:
void LinkBuffer( Buffer*, Buffer*, Buffer* );
Buffer* UnlinkBuffer( Buffer* );
void SplitBuffer( const Position& );
Buffer* First() { return mFirstBuffer; }
Buffer* Last() { return mLastBuffer; }
protected:
void DestroyBuffers();
protected:
Buffer* mFirstBuffer;
Buffer* mLastBuffer;
PRUint32 mTotalLength;
};
#endif // !defined(nsSharedBufferList_h___)