110 lines
2.3 KiB
C
110 lines
2.3 KiB
C
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/*++
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Copyright (C) 1996-2001 Microsoft Corporation
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Module Name:
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TREES.H
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Abstract:
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History:
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--*/
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#ifndef __HMM_TREES__H_
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#define __HMM_TREES__H_
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#include <windows.h>
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#include <stdio.h>
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#include <providl.h>
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#include <arrtempl.h>
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#include <wstring.h>
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#include <parmdefs.h>
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#include <metadata.h>
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#include <relation.h>
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class CHmmNode
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{
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public:
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long m_lRef;
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int m_lTokenType;
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public:
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CHmmNode() : m_lRef(0){}
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virtual ~CHmmNode(){}
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inline void AddRef() {m_lRef++;}
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inline void Release() {m_lRef--; if(m_lRef == 0) delete this;}
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virtual HRESULT Evaluate(IHmmPropertySource* pSource) = 0;
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virtual HRESULT Negate() = 0;
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virtual void Print(FILE* f, int nOffset) = 0;
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static HRESULT EvaluateNode(CHmmNode* pNode, IHmmPropertySource* pSource);
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static HMM_RELATIONSHIP RelateNodes(CHmmNode* pFirst, CHmmNode* pSecond,
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CMetaData* pMeta);
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protected:
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void PrintOffset(int nOffset);
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};
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class CNodeArray : public CUniquePointerArray<CHmmNode>
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{
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public:
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void AddRefElement(CHmmNode* pNode)
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{
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pNode->AddRef();
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}
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void ReleaseElement(CHmmNode* pNode)
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{
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pNode->Release();
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}
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};
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class CLogicalNode : public CHmmNode
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{
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public:
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CNodeArray m_apChildren;
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HRESULT Evaluate(IHmmPropertySource* pSource);
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HRESULT Negate();
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void Print(FILE* f, int nOffset);
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void Add(CHmmNode* pNode);
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};
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class CSql1Token : public CHmmNode
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{
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public:
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WString m_wsProperty;
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long m_lOperator;
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VARIANT m_vConstValue;
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long m_lPropertyFunction;
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long m_lConstFunction;
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public:
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CSql1Token();
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CSql1Token(const CSql1Token& Other);
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CSql1Token(const HMM_SQL1_TOKEN& Token);
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~CSql1Token();
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void Load(const HMM_SQL1_TOKEN& Token);
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void Save(HMM_SQL1_TOKEN& Token);
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HRESULT Evaluate(IHmmPropertySource* pSource);
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HRESULT Negate();
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void Print(FILE* f, int nOffset);
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static HMM_RELATIONSHIP ComputeRelation(
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CSql1Token* pFirst, CSql1Token* pSecond, CMetaData* pMeta);
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protected:
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static int CompareVariants(VARIANT& v1, VARIANT& v2);
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static void ComputeSegment(long lOperator, int nRightHand,
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int& nStart, int& nEnd);
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static HRESULT EvaluateFunction(IN long lFunctionID,
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IN READ_ONLY VARIANT* pvArg,
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OUT INIT_AND_CLEAR_ME VARIANT* pvDest);
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};
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#endif
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