QtxEvalSetConst Class Reference

Provides different standard constants. More...

#include <QtxEvalExpr.h>

Inheritance diagram for QtxEvalSetConst:

Public Member Functions
	QtxEvalSetConst ()
virtual	~QtxEvalSetConst ()
	Destructor. More...
virtual QString	name () const
	Get operations set name. More...
virtual bool	createValue (const QString &, QVariant &) const
	Create value from its string representation. 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 int	priority (const QString &, bool isBin) const
	Get the operation priority. More...
virtual QtxEvalExpr::Error	isValid (const QString &, const QVariant::Type, const QVariant::Type) const
	Check operation validity. More...
virtual QtxEvalExpr::Error	calculate (const QString &, QVariant &, QVariant &) const
	Calculate the operation. 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...

Detailed Description

Provides different standard constants.

Constructor & Destructor Documentation

QtxEvalSetConst()

QtxEvalSetConst::QtxEvalSetConst

(

)

~QtxEvalSetConst()

QtxEvalSetConst::~QtxEvalSetConst ( )

virtual

Destructor.

Member Function Documentation

bracketsList()

void QtxEvalSetConst::bracketsList ( QStringList &  , bool  open  ) const

virtual

Get list of brackets.

Parameters

list	returning list of brackets (not used)
open	if true, collect opening brackets, or closing brackets otherwise (not used)

Implements QtxEvalSet.

calculate()

QtxEvalExpr::Error QtxEvalSetConst::calculate ( const QString &  , QVariant &  , QVariant &    ) const

virtual

Calculate the operation.

Always returns QtxEvalExpr::InvalidOperation.

Parameters

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

Returns

error code (QtxEvalExpr::Error)

Implements QtxEvalSet.

References QtxEvalExpr::InvalidOperation.

createValue()

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

virtual

Create value from its string representation.

Convert constant name to its value.

Parameters

str	string representration of the constant
val	returning value

Returns

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

Reimplemented from QtxEvalSet.

isValid()

QtxEvalExpr::Error QtxEvalSetConst::isValid ( const QString &  , const QVariant::Type  , const QVariant::Type    ) const

virtual

Check operation validity.

Always returns QtxEvalExpr::InvalidOperation.

Parameters

op	operation (not used)
t1	first operand type (not used)
t2	second operand type (not used)

Returns

error code (QtxEvalExpr::Error)

Implements QtxEvalSet.

References QtxEvalExpr::InvalidOperation.

Name()

QString QtxEvalSetConst::Name ( )

static

Get operations set name.

Returns

operations set name

name()

QString QtxEvalSetConst::name ( ) const

virtual

Get operations set name.

Returns

operations set name

Implements QtxEvalSet.

References Name().

operationList()

void QtxEvalSetConst::operationList ( QStringList &  ) const

virtual

Get the list of possible operations.

Parameters

list	returning list of operations supported by the class (not used)

Implements QtxEvalSet.

priority()

int QtxEvalSetConst::priority ( const QString &  , 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 (not used)
isBin	true if the operation is binary and false if it is unary (not used)

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