DOMDocumentImpl.cpp

/*
 * The Apache Software License, Version 1.1
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 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation, and was
 * originally based on software copyright (c) 2001, International
 * Business Machines, Inc., http://www.ibm.com .  For more information
 * on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
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/*
 * $Id$
 */

#include <xercesc/util/XMLUniDefs.hpp>

#include <xercesc/dom/DOMDocument.hpp>
#include <xercesc/dom/DOMDocumentType.hpp>
#include <xercesc/dom/DOMException.hpp>
#include <xercesc/dom/DOMImplementation.hpp>
#include <xercesc/dom/DOMNamedNodeMap.hpp>
#include <xercesc/dom/DOMNode.hpp>

#include "DOMDocumentImpl.hpp"
#include "DOMCasts.hpp"
#include "DOMDocumentTypeImpl.hpp"
#include "DOMAttrImpl.hpp"
#include "DOMAttrNSImpl.hpp"
#include "DOMCDATASectionImpl.hpp"
#include "DOMCommentImpl.hpp"
#include "DOMDeepNodeListImpl.hpp"
#include "DOMDocumentFragmentImpl.hpp"
#include "DOMElementImpl.hpp"
#include "XSDElementNSImpl.hpp"
#include "DOMEntityImpl.hpp"
#include "DOMEntityReferenceImpl.hpp"
#include "DOMNamedNodeMapImpl.hpp"
#include "DOMNotationImpl.hpp"
#include "DOMProcessingInstructionImpl.hpp"
#include "DOMTextImpl.hpp"

#include "DOMStringPool.hpp"
#include "DOMTreeWalkerImpl.hpp"
#include "DOMNodeIteratorImpl.hpp"
#include "DOMNodeIDMap.hpp"
#include "DOMRangeImpl.hpp"

#include <xercesc/internal/XMLReader.hpp>
#include <xercesc/util/HashPtr.hpp>


//revisit.  These can go away once all of the include files above are really there.
class DOMTreeWalker;
class DOMNodeFilter;


//
//   Constructors.   Warning - be very careful with the ordering of initialization
//                             of the heap.  Ordering depends on the order of declaration
//                             in the .hpp file, not on the order of initializers here
//                             in the constructor.  The heap declaration can not be
//                             first - fNode and fParent must be first for the casting
//                             functions in DOMCasts to work correctly.  This means that
//                             fNode and fParent constructors used here can not
//                             allocate.
//
DOMDocumentImpl::DOMDocumentImpl()
    : fNode(this),
      fParent(this),
      fCurrentBlock(0),
      fFreePtr(0),
      fFreeBytesRemaining(0),
      fDocType(0),
      fDocElement(0),
      fNamePool(0),
      fIterators(0L),
      fTreeWalkers(0L),
      fNodeIDMap(0),
      fUserData(0),
      fRanges(0),
      fChanges(0),
      fNodeListPool(0),
      fActualEncoding(0),
      fEncoding(0),
      fVersion(0),
      fStandalone(false),
      fDocumentURI(0)
{
    fNamePool    = new (this) DOMStringPool(257, this);
};


//DOM Level 2
DOMDocumentImpl::DOMDocumentImpl(const XMLCh *fNamespaceURI,
                               const XMLCh *qualifiedName,
                               DOMDocumentType *doctype)
    : fNode(this),
      fParent(this),
      fCurrentBlock(0),
      fFreePtr(0),
      fFreeBytesRemaining(0),
      fDocType(0),
      fDocElement(0),
      fNamePool(0),
      fIterators(0L),
      fTreeWalkers(0L),
      fNodeIDMap(0),
      fUserData(0),
      fRanges(0),
      fChanges(0),
      fNodeListPool(0),
      fActualEncoding(0),
      fEncoding(0),
      fVersion(0),
      fStandalone(false),
      fDocumentURI(0)
{
    fNamePool    = new (this) DOMStringPool(257, this);
    try {
        setDocumentType(doctype);
        appendChild(createElementNS(fNamespaceURI, qualifiedName));  //root element
    }
    catch (...) {
        this->deleteHeap();
        throw;
    }
}

void DOMDocumentImpl::setDocumentType(DOMDocumentType *doctype)
{
	if (!doctype)
		return;

    // New doctypes can be created either with the factory methods on DOMImplementation, in
    //   which case ownerDocument will be 0, or with methods on DocumentImpl, in which case
    //   ownerDocument will be set, but the DocType won't yet be a child of the document.
    if (doctype->getOwnerDocument() != 0 && doctype->getOwnerDocument() != this)
        throw DOMException(	//one doctype can belong to only one DOMDocumentImpl
        DOMException::WRONG_DOCUMENT_ERR, 0);

    DOMDocumentTypeImpl* doctypeImpl = (DOMDocumentTypeImpl*) doctype;
    doctypeImpl->setOwnerDocument(this);

    // The doctype can not have any Entities or Notations yet, because they can not
    //   be created except through factory methods on a document.
				
    // revisit.  What if this doctype is already a child of the document?
	appendChild(doctype);

}

DOMDocumentImpl::~DOMDocumentImpl()
{
    //  Clean up the fNodeListPool