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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* 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 .
*/
#ifndef INCLUDED_SW_INC_CALC_HXX
#define INCLUDED_SW_INC_CALC_HXX
#include <memory>
#include <vector>
#include <basic/sbxvar.hxx>
#include <unotools/syslocale.hxx>
#include <rtl/ustrbuf.hxx>
#include <tools/solar.h>
#include <tools/long.hxx>
#include "swdllapi.h"
class CharClass;
class LocaleDataWrapper;
class SwFieldType;
class SwDoc;
class SwUserFieldType;
#define TBLSZ 47 // should be a prime, because of hash table
const sal_Unicode cListDelim = '|';
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_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, CALC_PRODUCT=285, CALC_AVERAGE=286,
CALC_COUNT=287, CALC_SIGN=288, CALC_ABS=289
};
// Calculate Operations Strings
extern const char sCalc_Add[];
extern const char sCalc_Sub[];
extern const char sCalc_Mul[];
extern const char sCalc_Div[];
extern const char sCalc_Phd[];
extern const char sCalc_Sqrt[];
extern const char sCalc_Pow[];
extern const char sCalc_Or[];
extern const char sCalc_Xor[];
extern const char sCalc_And[];
extern const char sCalc_Not[];
extern const char sCalc_Eq[];
extern const char sCalc_Neq[];
extern const char sCalc_Leq[];
extern const char sCalc_Geq[];
extern const char sCalc_L[];
extern const char sCalc_G[];
extern const char sCalc_Sum[];
extern const char sCalc_Mean[];
extern const char sCalc_Average[];
extern const char sCalc_Product[];
extern const char sCalc_Count[];
extern const char sCalc_Min[];
extern const char sCalc_Max[];
extern const char sCalc_Sin[];
extern const char sCalc_Cos[];
extern const char sCalc_Tan[];
extern const char sCalc_Asin[];
extern const char sCalc_Acos[];
extern const char sCalc_Atan[];
extern const char sCalc_Round[];
extern const char sCalc_Date[];
extern const char sCalc_Sign[];
extern const char sCalc_Abs[];
// Calculate ErrorCodes
enum class SwCalcError
{
NONE=0,
NaN, // not a number (not an error, used for interoperability)
Syntax, // syntax error
DivByZero, // division by zero
FaultyBrackets, // faulty brackets
OverflowInPower, // overflow in power function
Overflow, // overflow
};
class SwSbxValue final : public SbxValue
{
bool m_bVoid;
bool m_bDBvalue;
public:
// always default to a number. otherwise it will become a SbxEMPTY
SwSbxValue( tools::Long n = 0 ) : m_bVoid(false), m_bDBvalue(false) { PutLong( n ); }
SwSbxValue( const double& rD ) : m_bVoid(false), m_bDBvalue(false) { PutDouble( rD ); }
bool GetBool() const;
double GetDouble() const;
SwSbxValue& MakeDouble();
bool IsVoidValue() const {return m_bVoid;}
void SetVoidValue(bool bSet) {m_bVoid = bSet;}
bool IsDBvalue() const {return m_bDBvalue;}
void SetDBvalue(bool bSet) {m_bDBvalue = bSet;}
};
// Calculate HashTables for VarTable and Operations
struct SwHash
{
SwHash( const OUString& rStr );
virtual ~SwHash();
OUString aStr;
std::unique_ptr<SwHash> pNext;
};
struct SwCalcExp final : public SwHash
{
SwSbxValue nValue;
const SwFieldType* pFieldType;
SwCalcExp( const OUString& rStr, const SwSbxValue& rVal,
const SwFieldType* pFieldType );
};
/// T should be a subclass of SwHash
template<class T>
class SwHashTable
{
std::vector<std::unique_ptr<T>> m_aData;
public:
SwHashTable(size_t nSize) : m_aData(nSize) {}
std::unique_ptr<T> & operator[](size_t idx) { return m_aData[idx]; }
std::unique_ptr<T> const & operator[](size_t idx) const { return m_aData[idx]; }
void resize(size_t nSize) { m_aData.resize(nSize); }
T* Find( const OUString& rStr, sal_uInt16* pPos = nullptr ) const
{
size_t nTableSize = m_aData.size();
sal_uLong ii = 0;
for( sal_Int32 n = 0; n < rStr.getLength(); ++n )
{
ii = ii << 1 ^ rStr[n];
}
ii %= nTableSize;
if( pPos )
*pPos = static_cast<sal_uInt16>(ii);
for( T* pEntry = m_aData[ii].get(); pEntry; pEntry = static_cast<T*>(pEntry->pNext.get()) )
{
if( rStr == pEntry->aStr )
{
return pEntry;
}
}
return nullptr;
}
};
// if CalcOp != 0, this is a valid operator
struct CalcOp;
CalcOp* FindOperator( const OUString& rSearch );
extern "C" typedef double (*pfCalc)(double);
class SwCalc
{
SwHashTable<SwCalcExp> m_aVarTable;
OUStringBuffer m_aVarName;
OUString m_sCurrSym;
OUString m_sCommand;
std::vector<const SwUserFieldType*> m_aRekurStack;
SwSbxValue m_nLastLeft;
SwSbxValue m_nNumberValue;
SwCalcExp m_aErrExpr;
sal_Int32 m_nCommandPos;
SwDoc& m_rDoc;
SvtSysLocale m_aSysLocale;
const LocaleDataWrapper* m_pLocaleDataWrapper;
CharClass* m_pCharClass;
sal_uInt16 m_nListPor;
bool m_bHasNumber; // fix COUNT() and AVERAGE(), if all cells are NaN
SwCalcOper m_eCurrOper;
SwCalcOper m_eCurrListOper;
SwCalcError m_eError;
SwCalcOper GetToken();
SwSbxValue Expr();
SwSbxValue Term();
SwSbxValue PrimFunc(bool &rChkPow);
SwSbxValue Prim();
SwSbxValue StdFunc(pfCalc pFnc, bool bChkTrig);
static OUString GetColumnName( const OUString& rName );
OUString GetDBName( const OUString& rName );
SwCalc( const SwCalc& ) = delete;
SwCalc& operator=( const SwCalc& ) = delete;
public:
SwCalc(SwDoc& rD);
~SwCalc() COVERITY_NOEXCEPT_FALSE;
SwSbxValue Calculate( const OUString &rStr );
OUString GetStrResult( const SwSbxValue& rValue );
OUString GetStrResult( double );
SwCalcExp* VarInsert( const OUString& r );
SwCalcExp* VarLook( const OUString &rStr, bool bIns = false );
void VarChange( const OUString& rStr, const SwSbxValue& rValue );
void VarChange( const OUString& rStr, double );
SwHashTable<SwCalcExp> & GetVarTable() { return m_aVarTable; }
bool Push(const SwUserFieldType* pUserFieldType);
void Pop();
CharClass* GetCharClass();
void SetCalcError( SwCalcError eErr ) { m_eError = eErr; }
bool IsCalcError() const { return SwCalcError::NONE != m_eError && SwCalcError::NaN != m_eError; }
bool IsCalcNotANumber() const { return SwCalcError::NaN == m_eError; }
static bool Str2Double( const OUString& rStr, sal_Int32& rPos,
double& rVal );
static bool Str2Double( const OUString& rStr, sal_Int32& rPos,
double& rVal, SwDoc const *const pDoc );
SW_DLLPUBLIC static bool IsValidVarName( const OUString& rStr,
OUString* pValidName = nullptr );
};
#endif
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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