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/*************************************************************************************
* Copyright (C) 2007 by Aleix Pol <aleixpol@kde.org> *
* *
* This program 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 2 *
* of the License, or (at your option) any later version. *
* *
* This program 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 this program; if not, write to the Free Software *
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA *
*************************************************************************************/
#ifndef VARIABLES_H
#define VARIABLES_H
#include <QHash>
#include "analitzaexport.h"
namespace Analitza
{
class Cn;
class Expression;
class Object;
/**
* \class Variables
*
* \ingroup AnalitzaModule
*
* \brief Stores the variables in a hash map and make them available.
*/
class ANALITZA_EXPORT Variables : public QHash<QString, Object*>
{
public:
/**
* Creates an empty variable hash table with the usual constants
*/
Variables();
/**
* Copy constructor, copies the old one, a bit heavy, be careful.
*/
Variables(const Variables& v);
/** Destroys the object */
~Variables();
/**
* Modifies the value of the variable called @p name,
* and if didn't exist, a @p name variable is created with an @p o value.
*/
void modify(const QString& name, const Object* o);
/**
* Modifies the value of the variable called @p name,
* and if didn't exist, a @p name variable is created with an @p e expression.
*/
void modify(const QString& name, const Expression& o);
/**
* The same as the last one but having @p d as a value for @p name.
*/
Cn* modify(const QString& name, const double& d);
/**
* The @p orig named variable will be called @p dest , then @p orig will be removed.
*/
void rename(const QString& orig, const QString& dest);
/**
* Adds again the initial constants
*/
void initializeConstants();
/** @returns the expression contained by the @p name identifier. */
Expression valueExpression(const QString& name) const;
};
}
#endif
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