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