QtxEvalSetArithmetic Class Reference

Provides set of arithmetical operations for the parser. More...

#include <QtxEvalExpr.h>

Inheritance diagram for QtxEvalSetArithmetic:

Public Member Functions
	QtxEvalSetArithmetic ()
	Constructor. More...
virtual	~QtxEvalSetArithmetic ()
	Destructor. More...
virtual bool	createValue (const QString &, QVariant &) const
	Create value from its string representation. More...
virtual int	priority (const QString &, bool isBin) const
	Get the operation priority. More...
virtual QtxEvalExpr::Error	calculate (const QString &, QVariant &, QVariant &) const
	Calculate the operation. More...
virtual QString	name () const
	Get operations set name. More...
Public Member Functions inherited from QtxEvalSetBase
	QtxEvalSetBase ()
	Constructor. More...
virtual	~QtxEvalSetBase ()
	Destructor. More...
virtual void	operationList (QStringList &) const
	Get the list of possible operations. More...
virtual void	bracketsList (QStringList &, bool open) const
	Get list of brackets. More...
virtual QtxEvalExpr::Error	isValid (const QString &, const QVariant::Type, const QVariant::Type) const
	Check operation validity. More...
Public Member Functions inherited from QtxEvalSet
	QtxEvalSet ()
	Constructor. More...
virtual	~QtxEvalSet ()
	Destructor. More...

Static Public Member Functions
static QString	Name ()
	Get operations set name. More...

Additional Inherited Members
Protected Types inherited from QtxEvalSetBase
typedef QList< QVariant::Type >	ListOfTypes
Protected Member Functions inherited from QtxEvalSetBase
void	addTypes (const ListOfTypes &)
	Add operand types. More...
void	addOperations (const QStringList &)
	Add operation names to the internal list of operations. More...

Detailed Description

Provides set of arithmetical operations for the parser.

Constructor & Destructor Documentation

QtxEvalSetArithmetic()

QtxEvalSetArithmetic::QtxEvalSetArithmetic

(

)

Constructor.

References QtxEvalSetBase::addOperations(), and QtxEvalSetBase::addTypes().

~QtxEvalSetArithmetic()

QtxEvalSetArithmetic::~QtxEvalSetArithmetic ( )

virtual

Destructor.

Member Function Documentation

calculate()

QtxEvalExpr::Error QtxEvalSetArithmetic::calculate ( const QString &  op, QVariant &  v1, QVariant &  v2  ) const

virtual

Calculate the operation.

Process binary operation with values v1 and v2. For unary operation the \v2 is invalid. The result of the operation is returned in the parameter v1.

Parameters

op	operation name
v1	first argument (not valid for unary prefix operations)
v2	second argument (not valid for unary postfix operations)

Returns

error code (QtxEvalExpr::Error)

Implements QtxEvalSet.

References QtxEvalExpr::InvalidResult, and QtxEvalExpr::OK.

createValue()

bool QtxEvalSetArithmetic::createValue ( const QString &  str, QVariant &  val  ) const

virtual

Create value from its string representation.

Creates numbers from string representation.

Parameters

str	string representration of the value
val	returning value

Returns

true if str can be evaluated as custom value and false otherwise (parameter)

Reimplemented from QtxEvalSet.

References QtxEvalSet::createValue().

Name()

QString QtxEvalSetArithmetic::Name ( )

static

Get operations set name.

Returns

operations set name

name()

QString QtxEvalSetArithmetic::name ( ) const

virtual

Get operations set name.

Returns

operations set name

Implements QtxEvalSet.

References Name().

priority()

int QtxEvalSetArithmetic::priority ( const QString &  op, bool  isBin  ) const

virtual

Get the operation priority.

Operation priority counts from 1. If the operation is impossible, this function returns value <= 0.

Parameters

op	operation
isBin	true if the operation is binary and false if it is unary

Returns

operation priority

Implements QtxEvalSet.

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The documentation for this class was generated from the following files:

• src/Qtx/QtxEvalExpr.h
• src/Qtx/QtxEvalExpr.cxx