115 lines
2.9 KiB
C
115 lines
2.9 KiB
C
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/*++
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Copyright (c) 2000 Microsoft Corporation
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Module Name:
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sxsxmltree.h
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Abstract:
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Create a XML DOM tree during push-mode parsing
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Author:
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Xiaoyu Wu (xiaoyuw) Aug 2000
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Revision History:
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--*/
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#if !defined(_FUSION_SXS_XMLTREE_H_INCLUDED_)
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#define _FUSION_SXS_XMLTREE_H_INCLUDED_
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#pragma once
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#include "stdinc.h"
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#include "xmlparser.h"
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#include "FusionHeap.h"
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// allocatememory for this element, and all its attributes once
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struct _SXS_XMLATTRIBUTE{
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PWSTR m_wszName;
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ULONG m_ulPrefixLen;
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PWSTR m_wszValue;
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};
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typedef struct _SXS_XMLATTRIBUTE SXS_XMLATTRIBUTE;
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class SXS_XMLTreeNode{
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public:
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friend VOID PrintTreeFromRoot(SXS_XMLTreeNode * Root);
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friend class SXS_XMLDOMTree;
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SXS_XMLTreeNode() :
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m_AttributeList(NULL),
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m_cAttributes(0),
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m_pwszStr(NULL),
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m_ulPrefixLen(0),
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m_pSiblingNode(NULL),
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m_pParentNode(NULL),
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m_pFirstChild(NULL),
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m_pMemoryPool(NULL) { }
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VOID DeleteSelf() { FUSION_DELETE_SINGLETON(this); }
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~SXS_XMLTreeNode() {
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CSxsPreserveLastError ple;
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if (m_pMemoryPool != NULL)
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{
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FUSION_DELETE_ARRAY(m_pMemoryPool);
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m_pMemoryPool = NULL;
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}
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ple.Restore();
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}
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HRESULT CreateTreeNode(USHORT cNumRecs, XML_NODE_INFO** apNodeInfo);
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VOID PrintSelf();
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private:
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HRESULT ComputeBlockSize(USHORT cNumRecs, XML_NODE_INFO** apNodeInfo, DWORD * dwBlockSizeInBytes);
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// for each node, allocate memory once : compute the total spaces need for prefix, localname, and value,
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ULONG m_ulPrefixLen;
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PWSTR m_pwszStr; // Can be a name for ELEMENT, a value for a PCDATA
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SXS_XMLATTRIBUTE *m_AttributeList;
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USHORT m_cAttributes;
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SXS_XMLTreeNode *m_pSiblingNode;
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SXS_XMLTreeNode *m_pParentNode;
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SXS_XMLTreeNode *m_pFirstChild;
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BYTE *m_pMemoryPool; // memory for attribs array, name-value pairs and name-value for the node
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};
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class SXS_XMLDOMTree{
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public:
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HRESULT AddNode(USHORT cNumRecs, XML_NODE_INFO** apNodeInfo); // CreateNode calls this func to add node into the Tree,
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VOID ReturnToParent(); // EndChildren calls this func if "fEmpty=FALSE"
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VOID SetChildCreation(); // BeginChildren calls this func
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/*
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VOID TurnOffFirstChildFlag();
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*/
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SXS_XMLDOMTree():
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m_fBeginChildCreation(FALSE),
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m_Root(NULL),
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m_pCurrentNode(NULL)
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{ }
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VOID DeleteTreeBranch(SXS_XMLTreeNode * pNode);
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~SXS_XMLDOMTree(){
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CSxsPreserveLastError ple;
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this->DeleteTreeBranch(m_Root); // do not delete its siblings
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ple.Restore();
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}
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VOID PrintTreeFromRoot(SXS_XMLTreeNode * Root);
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SXS_XMLTreeNode * GetRoot() {
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return m_Root;
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}
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private :
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BOOL m_fBeginChildCreation; // everytime, when BeginChild is called, it is set, once it is checked, set it to be FALSE
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SXS_XMLTreeNode * m_Root;
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SXS_XMLTreeNode * m_pCurrentNode;
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};
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#endif
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