You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
151 lines
3.9 KiB
151 lines
3.9 KiB
//***************************************************************************
|
|
//
|
|
// SQL_1.H
|
|
//
|
|
// Level 1 Syntax SQL Parser
|
|
//
|
|
// Copyright 1999 Microsoft Corporation
|
|
//
|
|
//
|
|
//=================================================================
|
|
|
|
|
|
#ifndef _SQL_1_H_
|
|
#define _SQL_1_H_
|
|
|
|
#include <wbemprov.h>
|
|
|
|
|
|
struct SQL_LEVEL_1_TOKEN
|
|
{
|
|
enum { OP_EXPRESSION = 1, TOKEN_AND, TOKEN_OR, TOKEN_NOT };
|
|
enum { IFUNC_NONE = 0, IFUNC_UPPER = 1, IFUNC_LOWER = 2 };
|
|
|
|
int nTokenType; // OP_EXPRESSION,TOKEN_AND, TOKEN_OR, TOKEN_NOT
|
|
|
|
|
|
// If the field is a OP_EXPRESSION, then the following are used.
|
|
enum { OP_EQUAL = 1, OP_NOT_EQUAL, OP_EQUALorGREATERTHAN,
|
|
OP_EQUALorLESSTHAN, OP_LESSTHAN, OP_GREATERTHAN, OP_LIKE };
|
|
|
|
BSTR pPropertyName; // Name of the property on which the operator is applied
|
|
int nOperator; // Operator that is applied on property
|
|
BOOL bConstIsStrNumeric; // True if the vConstValue is a BSTR and is a UINT32 or any 64bit number
|
|
VARIANT vConstValue; // Value applied by operator
|
|
BSTR pPropName2; // Property compared to.
|
|
|
|
DWORD dwPropertyFunction; // 0=no instrinsic function applied
|
|
DWORD dwConstFunction; // "
|
|
|
|
SQL_LEVEL_1_TOKEN();
|
|
SQL_LEVEL_1_TOKEN(SQL_LEVEL_1_TOKEN&);
|
|
~SQL_LEVEL_1_TOKEN();
|
|
SQL_LEVEL_1_TOKEN& operator=(SQL_LEVEL_1_TOKEN &Src);
|
|
|
|
void Dump(FILE *);
|
|
};
|
|
|
|
|
|
// Contains RPN version of expression.
|
|
// ===================================
|
|
|
|
struct SQL_LEVEL_1_RPN_EXPRESSION
|
|
{
|
|
int nNumTokens;
|
|
int nCurSize;
|
|
SQL_LEVEL_1_TOKEN *pArrayOfTokens;
|
|
BSTR bsClassName;
|
|
|
|
int nNumberOfProperties; // Zero means all properties selected
|
|
int nCurPropSize;
|
|
BSTR *pbsRequestedPropertyNames; // Array of property names which values are to be returned if
|
|
|
|
SQL_LEVEL_1_RPN_EXPRESSION();
|
|
~SQL_LEVEL_1_RPN_EXPRESSION();
|
|
|
|
//Note: this method deletes the token it is passed as an argument
|
|
void AddToken(SQL_LEVEL_1_TOKEN *pTok);
|
|
void AddToken(SQL_LEVEL_1_TOKEN &pTok);
|
|
void AddProperty(LPWSTR pProp);
|
|
void Dump(const char *pszTextFile);
|
|
};
|
|
|
|
|
|
class SQL1_Parser
|
|
{
|
|
CGenLexer *m_pLexer;
|
|
int m_nLine;
|
|
wchar_t* m_pTokenText;
|
|
int m_nCurrentToken;
|
|
SQL_LEVEL_1_RPN_EXPRESSION* m_pExpression;
|
|
|
|
//Cleanup used by d'tor and SetSource
|
|
void Cleanup();
|
|
|
|
//Init used by c'tor and SetSource
|
|
void Init(CGenLexSource *pSrc);
|
|
|
|
// Semantic transfer variables.
|
|
// ============================
|
|
VARIANT m_vTypedConst;
|
|
int m_nRelOp;
|
|
DWORD m_dwConstFunction;
|
|
DWORD m_dwPropFunction;
|
|
LPWSTR m_pIdent;
|
|
LPWSTR m_pPropComp;
|
|
BOOL m_bConstIsStrNumeric;
|
|
|
|
// Parsing functions.
|
|
// ==================
|
|
BOOL Next();
|
|
|
|
int parse();
|
|
|
|
int prop_list();
|
|
int class_name();
|
|
int opt_where();
|
|
int expr();
|
|
int property_name();
|
|
int prop_list_2();
|
|
int term();
|
|
int expr2();
|
|
int simple_expr();
|
|
int term2();
|
|
int leading_ident_expr();
|
|
int finalize();
|
|
int rel_operator();
|
|
int equiv_operator();
|
|
int comp_operator();
|
|
int is_operator();
|
|
int trailing_prop_expr();
|
|
int trailing_prop_expr2();
|
|
int trailing_or_null();
|
|
int trailing_const_expr();
|
|
int unknown_func_expr();
|
|
int typed_constant();
|
|
|
|
public:
|
|
enum {
|
|
SUCCESS,
|
|
SYNTAX_ERROR,
|
|
LEXICAL_ERROR,
|
|
FAILED,
|
|
BUFFER_TOO_SMALL
|
|
};
|
|
|
|
SQL1_Parser(CGenLexSource *pSrc);
|
|
~SQL1_Parser();
|
|
|
|
int GetQueryClass(LPWSTR pBuf, int nBufSize);
|
|
|
|
int Parse(SQL_LEVEL_1_RPN_EXPRESSION **pOutput);
|
|
// use operator delete on pOutput
|
|
|
|
int CurrentLine() { return m_nLine; }
|
|
LPWSTR CurrentToken() { return m_pTokenText; }
|
|
void SetSource(CGenLexSource *pSrc);
|
|
};
|
|
|
|
#endif
|
|
|
|
|