valentina_old/src/libs/vpatterndb/calculator.h
Roman Telezhynskyi aec99643b3 Separate class Calculator.
--HG--
branch : feature
2015-08-09 20:46:21 +03:00

72 lines
2.6 KiB
C++

/************************************************************************
**
** @file calculator.h
** @author Roman Telezhynskyi <dismine(at)gmail.com>
** @date November 15, 2013
**
** @brief
** @copyright
** This source code is part of the Valentine project, a pattern making
** program, whose allow create and modeling patterns of clothing.
** Copyright (C) 2013-2015 Valentina project
** <https://bitbucket.org/dismine/valentina> All Rights Reserved.
**
** Valentina is free software: you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation, either version 3 of the License, or
** (at your option) any later version.
**
** Valentina is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
** GNU General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with Valentina. If not, see <http://www.gnu.org/licenses/>.
**
*************************************************************************/
#ifndef CALCULATOR_H
#define CALCULATOR_H
#include "../qmuparser/qmuformulabase.h"
#include "../vmisc/def.h"
class VContainer;
/**
* @brief The Calculator class for calculation formula.
*
* Main purpose make easy evaluate value of formula and get tokens.
* Note. If created to many parser for different purpes in the same time parser can work wrong.
* Example:
* DialogEditWrongFormula *dialog = new DialogEditWrongFormula(data);
* dialog->SetFormula(formula);
* if (dialog->exec() == QDialog::Accepted)
* {
* formula = dialog->GetFormula();
* //Need delete dialog here because parser in dialog don't allow use correct separator for parsing here.
* //Don't know why.
* delete dialog;
* Calculator *cal = new Calculator(data);
* result = cal->EvalFormula(formula);
* delete cal;//Here can be memory leak, but dialog already check this formula and probability very low.
* }
*/
class Calculator:public qmu::QmuFormulaBase
{
public:
Calculator(const VContainer *data, MeasurementsType patternType);
virtual ~Calculator();
qreal EvalFormula(const QString &formula);
private:
Q_DISABLE_COPY(Calculator)
qreal *vVarVal;
const VContainer *data;
MeasurementsType patternType;
void InitVariables(const VContainer *data, const QMap<int, QString> &tokens, const QString &formula);
static void RemoveAll(QMap<int, QString> &map, const QString &val);
};
#endif // CALCULATOR_H