/usr/include/analitza/value.h is in libanalitza-dev 4:4.14.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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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 VALUE_H
#define VALUE_H
#include "object.h"
#include "analitzaexport.h"
#include <cmath>
class QDomElement;
namespace Analitza
{
/**
* \class Cn
*
* \ingroup AnalitzaModule
*
* \brief Cn is a value in MathML.
*
* The Cn class is the one that represents a value in the expression trees.
*/
class ANALITZA_EXPORT Cn : public Object
{
public:
enum ValueFormat { Char=8, Real=7, Integer=3, Boolean=1 };
/** Copy constructor. Creates a Cn from another one. */
Cn(const Cn& v) : Object(v), m_value(v.value()), m_format(v.m_format) { Q_ASSERT(m_type==Object::value); }
/** Constructor. Creates a boolean value with @p b. */
explicit Cn(const double &b=0.) : Object(Object::value), m_value(b), m_format(Real) {}
/** Constructor. Creates an integer value with @p i. */
explicit Cn(int i) : Object(Object::value), m_value(i), m_format(Integer) {}
/** @copydoc */
explicit Cn(uint i) : Object(Object::value), m_value(i), m_format(Integer) {}
/** Constructor. Creates a boolean value with value @p b. */
explicit Cn(bool b) : Object(Object::value), m_value(b?1.:0.), m_format(Boolean) {}
/** Constructor. Creates a value that represents a character. */
explicit Cn(const QChar& c) : Object(Object::value), m_char(c.unicode()), m_format(Char) {}
/**
* Extracts the number from the @p e Dom element and saves it.
*/
bool setValue(const QDomElement& e);
/**
* Sets the new value of this function
* @param v the new value
*/
void setValue(const double& v);
void setValue(int v);
void setValue(uint v);
void setValue(bool v);
/**
* Returns the value.
*/
inline double value() const { return m_value; }
inline double& rvalue() { return m_value; }
/**
* @returns the value as an int.
*/
int intValue() const { return static_cast<int>(std::floor(m_value)); }
/**
* @returns whether it is a boolean value or not.
*/
bool isBoolean() const { return m_format==Boolean; }
/**
* @returns whether it is a character value or not.
*/
bool isCharacter() const { return m_format==Char; }
ValueFormat format() const { return m_format; }
/**
* Sets whether this value is boolean or not.
*/
void setBoolean(bool b) { m_format= b ? Boolean : Real; }
/**
* @return If it is a boolean value, returns if it is true or not, otherwise retuns false.
*/
bool isTrue() const { Q_ASSERT(m_format==Boolean); return m_value!=0.; }
// static double toNum(const QString& num, const QString& type, int base);
// static enum ValueFormat whatValueFormat(const QDomElement&);
/**
* @returns whether it is an integer value or not.
*/
bool isInteger() const { return std::floor(m_value)==m_value; }
/**
* @returns whether @p d is equal than this object.
*/
bool operator==(const Cn& d) const { return m_value==d.m_value; }
/**
* @returns whether @p d is less than this object.
*/
bool operator<(const Cn& d) const { return m_value<d.m_value; }
/**
* @returns whether @p d is less than this object's value.
*/
bool operator<(double d) const { return m_value<d; }
/**
* @returns whether @p d is less or equal than this object.
*/
bool operator<=(const Cn& d) const { return m_value<=d.m_value; }
/**
* @returns whether @p d is less or equal than this object's value.
*/
bool operator<=(double d) const { return m_value<=d; }
/**
* Sets the new value to @p d.
*/
Cn operator=(double d) { m_value=d; return *this; }
QChar character() const { Q_ASSERT(m_format==Char); return QChar(m_char); }
virtual QVariant accept(AbstractExpressionVisitor*) const;
virtual bool isZero() const { return m_value==0.; }
virtual bool matches(const Object* exp, QMap< QString, const Object* >* found) const;
/*/** Sets whether it is a correct Cn.
void setCorrect(bool b) {m_correct = b; }*/
virtual Object* copy() const;
static Cn pi();
static Cn e();
static Cn euler();
private:
union { double m_value; ushort m_char; };
enum ValueFormat m_format;
};
}
#endif
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