#ifndef DOMStringImpl_HEADER_GUARD_#define DOMStringImpl_HEADER_GUARD_/* * Copyright 1999-2002,2004 The Apache Software Foundation. *  * Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0 *  * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. *//* * $Id: DOMStringImpl.hpp,v 1.4 2004/09/08 13:55:42 peiyongz Exp $ */////  This file is part of the internal implementation of the C++ XML DOM.//  It should NOT be included or used directly by application programs.////  Applications should include the file <xercesc/dom/deprecated/DOM.hpp> for the entire//  DOM API, or DOM_*.hpp for individual DOM classes, where the class//  name is substituded for the *.//#include <xercesc/util/XercesDefs.hpp>#include <xercesc/util/Mutexes.hpp>#include <stdio.h>XERCES_CPP_NAMESPACE_BEGINclass   DOMStringData{public:    unsigned int        fBufferLength;    int                 fRefCount;    XMLCh               fData[1];    static DOMStringData *allocateBuffer(unsigned int length);    inline void         addRef();    inline void         removeRef();};class  DOMStringHandle{public:            unsigned int     fLength;              // The logical length of the DOMString.                                                   //  This may be shorter than the buffer length.            int              fRefCount;            // The number of DOMString objects pointing to                                                   //  this string handle.            DOMStringData    *fDSData;             // Pointer to the string buffer. May be null.    void    *operator new( size_t sizeToAlloc);    // StringHandles have custom, optimized    void    operator delete( void *pvMem );        //   memory allocation.private:    static  void             *freeListPtr;         // Head of the linked list of unallocated String Handles    static  DOMStringHandle  *blockListPtr;        // Head of the linked list of memory blocks from which                                                   //  string handles are sub-allocated.public:    static  DOMStringHandle  *createNewStringHandle(unsigned int bufLength);            DOMStringHandle  *cloneStringHandle();    inline  void             addRef();    inline  void             removeRef();                             ~DOMStringHandle() {};    static  void             DOMStringCleanup();private:    inline                   DOMStringHandle() {};    static inline  XMLMutex &getMutex();};XERCES_CPP_NAMESPACE_END#endif