/**************************************************************
 * 
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * 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
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 * 
 *************************************************************/


#ifndef _CALC_HXX
#define _CALC_HXX

#include <svl/svarray.hxx>
#include <unotools/syslocale.hxx>

#ifndef __SBX_SBXVALUE //autogen
#include <basic/sbxvar.hxx>
#endif
#include "swdllapi.h"

class CharClass;
class LocaleDataWrapper;
class SwFieldType;
class SwDoc;

#define TBLSZ 47				// sollte Primzahl sein, wegen HashTable

const sal_Unicode cListDelim	= '|';

/******************************************************************************
 *							Calculate Operations
 ******************************************************************************/
enum SwCalcOper
{
	CALC_NAME,				CALC_NUMBER,			CALC_ENDCALC,
	CALC_PLUS='+',          CALC_MINUS='-',         CALC_MUL='*',
	CALC_DIV='/',           CALC_PRINT=';',         CALC_ASSIGN='=',
	CALC_LP='(',            CALC_RP=')',            CALC_PHD='%',
	CALC_POW='^',
	CALC_LISTOP = cListDelim,
	CALC_NOT=256,			CALC_AND=257,			CALC_OR=258,
	CALC_XOR=259,			CALC_EQ=260,			CALC_NEQ=261,
	CALC_LEQ=262,			CALC_GEQ=263,			CALC_LES=264,
	CALC_GRE=265,			CALC_SUM=266,			CALC_MEAN=267,
	CALC_SQRT=268,			CALC_MIN=269,			CALC_MIN_IN=270,
	CALC_MAX=271,			CALC_MAX_IN=272,		CALC_SIN=273,
	CALC_COS=274,			CALC_TAN=275,			CALC_ASIN=276,
	CALC_ACOS=278,			CALC_ATAN=279,			CALC_TDIF=280,
	CALC_ROUND=281,         CALC_DATE=282,          CALC_MONTH=283,
	CALC_DAY=284
};

//-- Calculate Operations Strings -----------------------------------------

extern const sal_Char __FAR_DATA sCalc_Add[];
extern const sal_Char __FAR_DATA sCalc_Sub[];
extern const sal_Char __FAR_DATA sCalc_Mul[];
extern const sal_Char __FAR_DATA sCalc_Div[];
extern const sal_Char __FAR_DATA sCalc_Phd[];
extern const sal_Char __FAR_DATA sCalc_Sqrt[];
extern const sal_Char __FAR_DATA sCalc_Pow[];
extern const sal_Char __FAR_DATA sCalc_Or[];
extern const sal_Char __FAR_DATA sCalc_Xor[];
extern const sal_Char __FAR_DATA sCalc_And[];
extern const sal_Char __FAR_DATA sCalc_Not[];
extern const sal_Char __FAR_DATA sCalc_Eq[];
extern const sal_Char __FAR_DATA sCalc_Neq[];
extern const sal_Char __FAR_DATA sCalc_Leq[];
extern const sal_Char __FAR_DATA sCalc_Geq[];
extern const sal_Char __FAR_DATA sCalc_L[];
extern const sal_Char __FAR_DATA sCalc_G[];
extern const sal_Char __FAR_DATA sCalc_Sum[];
extern const sal_Char __FAR_DATA sCalc_Mean[];
extern const sal_Char __FAR_DATA sCalc_Min[];
extern const sal_Char __FAR_DATA sCalc_Max[];
extern const sal_Char __FAR_DATA sCalc_Sin[];
extern const sal_Char __FAR_DATA sCalc_Cos[];
extern const sal_Char __FAR_DATA sCalc_Tan[];
extern const sal_Char __FAR_DATA sCalc_Asin[];
extern const sal_Char __FAR_DATA sCalc_Acos[];
extern const sal_Char __FAR_DATA sCalc_Atan[];
extern const sal_Char __FAR_DATA sCalc_Tdif[];
extern const sal_Char __FAR_DATA sCalc_Round[];
extern const sal_Char __FAR_DATA sCalc_Date[];

/******************************************************************************
 *							Calculate ErrorCodes
 ******************************************************************************/
enum SwCalcError
{
	CALC_NOERR=0,
	CALC_SYNTAX,		//	Syntax Fehler
	CALC_ZERODIV,		//	Division durch Null
	CALC_BRACK, 		//	Fehlerhafte Klammerung
	CALC_POWERR,		//	Ueberlauf in Quadratfunktion
	CALC_VARNFND,		//	Variable wurde nicht gefunden
	CALC_OVERFLOW,		//	Ueberlauf
	CALC_WRONGTIME		//	falsches Zeitformat
};

class SwSbxValue : public SbxValue
{
    bool bVoid;
public:
	//JP 03.02.99: immer auf eine Zahl defaulten, damit auch gerechnet wird.
	//				Ansonsten wird daraus ein SbxEMPTY und damit ist nichts
	//				anzufangen.
    SwSbxValue( long n = 0 ) : bVoid(false)  { PutLong( n ); }
    SwSbxValue( const double& rD ) : bVoid(false) { PutDouble( rD ); }
    SwSbxValue( const SwSbxValue& rVal ) : 
    	SvRefBase( rVal ),
        SbxValue( rVal ), 
        bVoid(rVal.bVoid)   
        {}
	virtual ~SwSbxValue();


    // Strings sonderbehandeln
	sal_Bool GetBool() const;
    // Strings sonderbehandeln BOOLs sonderbehandeln
	double GetDouble() const;
	SwSbxValue& MakeDouble();
    
    bool IsVoidValue() {return bVoid;}
    void SetVoidValue(bool bSet) {bVoid = bSet;}
};

/******************************************************************************
 *			Calculate HashTables fuer VarTable und Operations
 ******************************************************************************/
struct SwHash
{
			SwHash( const String& rStr );
	virtual ~SwHash();
	String	aStr;
	SwHash *pNext;
};

struct SwCalcExp : public SwHash
{
	SwSbxValue	nValue;
	const SwFieldType* pFldType;

	SwCalcExp( const String& rStr, const SwSbxValue& rVal,
				const SwFieldType* pFldType = 0 );
};

SwHash* Find( const String& rSrch, SwHash** ppTable,
				sal_uInt16 nTblSize, sal_uInt16* pPos = 0 );

void DeleteHashTable( SwHash** ppTable, sal_uInt16 nTblSize );

// falls _CalcOp != 0, dann ist das ein gueltiger Operator
struct _CalcOp;
_CalcOp* FindOperator( const String& rSearch );

/******************************************************************************
 *								 class SwCalc
 ******************************************************************************/
class SwCalc
{
	SwHash* 	VarTable[ TBLSZ ];
	String		aVarName, sCurrSym;
	String		sCommand;
	SvPtrarr	aRekurStk;
	SwSbxValue	nLastLeft;
	SwSbxValue	nNumberValue;
	SwCalcExp	aErrExpr;
	xub_StrLen	nCommandPos;

	SwDoc&		rDoc;
    SvtSysLocale m_aSysLocale;
	const LocaleDataWrapper* pLclData;
	CharClass* 	pCharClass;

	sal_uInt16 		nListPor;
	SwCalcOper	eCurrOper;
	SwCalcOper	eCurrListOper;
	SwCalcError eError;


	SwCalcOper	GetToken();
	SwSbxValue	Expr();
	SwSbxValue	Term();
	SwSbxValue	Prim();

	sal_Bool		ParseTime( sal_uInt16*, sal_uInt16*, sal_uInt16* );

	String	GetColumnName( const String& rName );
	String	GetDBName( const String& rName );

	// dont call this methods
	SwCalc( const SwCalc& );
	SwCalc& operator=( const SwCalc& );

public:
		SwCalc( SwDoc& rD );
		~SwCalc();

	SwSbxValue	Calculate( const String &rStr );
	String		GetStrResult( const SwSbxValue& rValue, sal_Bool bRound = sal_True );
	String		GetStrResult( double, sal_Bool bRound = sal_True );

	SwCalcExp*	VarInsert( const String& r );
	SwCalcExp*	VarLook( const String &rStr, sal_uInt16 ins = 0 );
	void		VarChange( const String& rStr, const SwSbxValue& rValue );
	void		VarChange( const String& rStr, double );
	SwHash**	GetVarTable()						{ return VarTable; }

	sal_Bool		Push( const VoidPtr pPtr );
	void		Pop( const VoidPtr pPtr );

	void		SetCalcError( SwCalcError eErr )	{ eError = eErr; }
	sal_Bool		IsCalcError() const 				{ return 0 != eError; }

    static bool Str2Double( const String& rStr, xub_StrLen& rPos,
                                double& rVal,
                                LocaleDataWrapper const*const pData = 0 );
    static bool Str2Double( const String& rStr, xub_StrLen& rPos,
                                double& rVal, SwDoc *const pDoc );

	SW_DLLPUBLIC static sal_Bool IsValidVarName( const String& rStr,
									String* pValidName = 0 );
};

#endif