196 lines
3.5 KiB
C++
196 lines
3.5 KiB
C++
/*++
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Copyright (c) 1995 Microsoft Corporation
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Module Name:
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qryparse.hxx
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Abstract:
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Author:
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Felix Wong [t-FelixW] 05-Nov-1996
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++*/
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#ifndef _QRYPARSE_HXX
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#define _QRYPARSE_HXX
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#define BAIL_ON_FAILURE(hr) \
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if (FAILED(hr)) { \
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goto error; \
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}\
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#define MAXVAL 1000
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#define QUERYNODE_INITIAL 2
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#define QUERYNODE_INC 5
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#define ATTRNODE_INITIAL 2
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#define ATTRNODE_INC 2
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enum snodetypes {
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SNODE_SZ,
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SNODE_NODE,
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SNODE_FILTER,
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SNODE_NULL
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};
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enum query_symbols {
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QUERY_EQUAL,
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QUERY_NOT,
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QUERY_APPROX,
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QUERY_OR,
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QUERY_AND,
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QUERY_PRESENT,
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QUERY_STRING,
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QUERY_LE,
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QUERY_GE,
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QUERY_UNKNOWN
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};
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enum search_scope {
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NDS_SCOPE_BASE,
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NDS_SCOPE_ONELEVEL,
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NDS_SCOPE_SUBTREE
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};
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typedef struct _AttrNode {
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LPWSTR szName;
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DWORD dwType;
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BOOL fBinary;
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} AttrNode;
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class CQueryNode;
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class CStack;
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class CSyntaxNode;
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class CAttrList;
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class CQueryNode
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{
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public:
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CQueryNode();
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~CQueryNode();
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HRESULT GenerateNDSTree(
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CAttrList *pAttrList,
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LPQUERY_NODE *ppNDSSearchTree
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);
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HRESULT SetToString(LPWSTR szValue);
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static HRESULT MapQueryToNDSType(
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DWORD dwType,
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DWORD *pdwNDSType
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);
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HRESULT AddChild(CQueryNode *pChild);
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DWORD _dwType;
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private:
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LPWSTR _szValue;
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CQueryNode **_rgQueryNode;
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DWORD _dwQueryNode;
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DWORD _dwQueryNodeMax;
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};
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class CStack
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{
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public:
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CStack();
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~CStack();
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HRESULT Push(CSyntaxNode*);
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HRESULT Pop(CSyntaxNode**);
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HRESULT Pop();
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HRESULT Current(CSyntaxNode**);
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void Dump();
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private:
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DWORD _dwStackIndex;
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CSyntaxNode* _Stack[MAXVAL];
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};
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// Helper functions
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HRESULT MakeNode(
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DWORD dwType,
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CQueryNode *pLQueryNode,
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CQueryNode *pRQueryNode,
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CQueryNode **ppQueryNodeReturn
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);
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HRESULT MakeLeaf(
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LPWSTR szValue,
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CQueryNode **ppQuerynNodeReturn
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);
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HRESULT Parse(
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LPWSTR szQuery,
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CQueryNode **ppNode,
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CAttrList **ppAttrList
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);
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class CSyntaxNode
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{
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public:
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CSyntaxNode();
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~CSyntaxNode();
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void SetNode(CQueryNode *pNode);
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void SetNode(LPWSTR szValue);
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void SetNode(DWORD dwFilterType);
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DWORD _dwToken;
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DWORD _dwState;
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DWORD _dwType;
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union {
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CQueryNode *_pNode; // Put in after reduction
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LPWSTR _szValue; // dwToken == ATTRTYPE|ATTRVAL
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DWORD _dwFilterType; // reduction of FT
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};
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};
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class CAttrList
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{
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public:
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CAttrList();
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~CAttrList();
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HRESULT Add(LPWSTR szName);
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HRESULT SetupType(LPWSTR szConnection);
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HRESULT GetType(LPWSTR szName, DWORD *pdwType);
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private:
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DWORD _dwAttrMax;
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DWORD _dwAttrCur;
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AttrNode* _rgAttr;
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};
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HRESULT
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AdsNdsGenerateParseTree(
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LPWSTR pszCommandText,
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LPWSTR pszConnection,
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LPQUERY_NODE *ppQueryNode
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);
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/*
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ADsNdsGenerateParseTree
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Generate an NDS search tree used as inputs to NDS search
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functions from the search filter
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Arguments: pszCommandText - Command text for the search
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ppQueryNode - the generated NDS search tree
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Returns: HRESULT
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S_OK NO ERROR
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E_OUTOFMEMORY no memory
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*/
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#endif
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