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 * Licensed to the Apache Software Foundation (ASF) under one
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 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
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 * 
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#ifndef _CONNECTIVITY_SQLSCAN_HXX
#define _CONNECTIVITY_SQLSCAN_HXX

#include <stdarg.h>
#include "connectivity/IParseContext.hxx"
#include "connectivity/dbtoolsdllapi.hxx"

namespace connectivity
{
	//==========================================================================
	//= OSQLScanner
	//==========================================================================
	/** Scanner for SQL92
	*/
	class OOO_DLLPUBLIC_DBTOOLS OSQLScanner
	{
		const IParseContext*	m_pContext;					// context for parse, knows all international stuff
		::rtl::OString			m_sStatement;			    // statement to parse
		::rtl::OUString			m_sErrorMessage;

		sal_Int32				m_nCurrentPos;             // next position to read from the statement
		sal_Bool				m_bInternational;		   // do we have a statement which may uses
		sal_Int32				m_nRule;				   // rule to be set

	public:
		OSQLScanner();
		virtual ~OSQLScanner();

		inline static void * SAL_CALL operator new( size_t nSize ) SAL_THROW( () )
			{ return ::rtl_allocateMemory( nSize ); }
		inline static void * SAL_CALL operator new( size_t,void* _pHint ) SAL_THROW( () )
			{ return _pHint; }
		inline static void SAL_CALL operator delete( void * pMem ) SAL_THROW( () )
			{ ::rtl_freeMemory( pMem ); }
		inline static void SAL_CALL operator delete( void *,void* ) SAL_THROW( () )
			{  }

		virtual sal_Int32 SQLyygetc(void);
		virtual void SQLyyerror(char *fmt);
		virtual void output(sal_Int32) { OSL_ASSERT("Internal error in sdblex.l: output not possible"); }
		virtual void ECHO(void) { OSL_ASSERT("Internal error in sdblex.l: ECHO not possible"); }
		virtual IParseContext::InternationalKeyCode getInternationalTokenID(const char* sToken) const;

		// setting the new information before scanning
		void prepareScan(const ::rtl::OUString & rNewStatement, const IParseContext* pContext, sal_Bool bInternational);
		const ::rtl::OUString& getErrorMessage() const {return m_sErrorMessage;}
		::rtl::OString getStatement() const { return m_sStatement; }

		sal_Int32 SQLlex();
		// set this as scanner for flex
		void setScanner(sal_Bool _bNull=sal_False);
		// rules settings
		void SetRule(sal_Int32 nRule) {m_nRule = nRule;}
		sal_Int32	GetCurrentRule() const;
		sal_Int32	GetGERRule() const;
		sal_Int32	GetENGRule() const;
		sal_Int32	GetSQLRule() const;
		sal_Int32	GetDATERule() const;
		sal_Int32	GetSTRINGRule() const;
        inline sal_Int32 GetCurrentPos() const { return m_nCurrentPos; }
	};
}

#endif