PlotIndexExpression Class Reference

An expression to index into an expression. More...

#include <plotindexexpression.h>

Inheritance diagram for PlotIndexExpression:

Public Member Functions
	PlotIndexExpression (PlotExpression *indexee, PlotExpression *indexer)
	Creates an index expression using indexer to index into indexee. More...
virtual double	sample (double sampleTime) const
	Samples the index expression for sampleTime. More...
virtual PlotExpression *	clone () const
	Clones this expression. More...
Public Member Functions inherited from PlotBinaryOperator
	PlotBinaryOperator (PlotExpression *left, PlotExpression *right)
	Create a binary operator on the given left and right expressions. More...
	~PlotBinaryOperator ()
	Destructor, destroying left and right.
void	setLeft (PlotExpression *left)
	Set the left branch. More...
const PlotExpression *	left () const
	Get the left branch. More...
void	setRight (PlotExpression *right)
	Set the right branch. More...
const PlotExpression *	right () const
	Get the right branch. More...
virtual BindResult	bind (const QList< PlotInstance * > &curves, PlotBindingTracker &bindTracker, PlotExpressionBindDomain &domain, bool repeatLastBinding=false)
	Binds the left and right branch expressions. More...
virtual void	unbind ()
	Unbind left and right branches.
bool	explicitTime () const override
	Is the generated expression sensitive to changes in the time domain? More...
Public Member Functions inherited from PlotExpression
	PlotExpression ()
	Empty constructor.
virtual	~PlotExpression ()
	Empty, virtual destructor.
QString	toString () const
	Converts the PlotExpression into a parseable string form. More...

Detailed Description

An expression to index into an expression.

This essentially uses the results from one expression as the sample time for another. PlotBinaryOperator is derived for convenience and the right expression makes the index or sample value, while the left expression is the indexed expression.

Out of range sample times are returned as a zero value.

Constructor & Destructor Documentation

PlotIndexExpression::PlotIndexExpression ( PlotExpression *  indexee, PlotExpression *  indexer  )

inline

Creates an index expression using indexer to index into indexee.

Parameters

indexee	Expression to index into. Stored as left().
indexer	Expression to calculate the index. Stored as right().

Member Function Documentation

virtual PlotExpression* PlotIndexExpression::clone ( ) const

virtual

Clones this expression.

Returns

A deep copy of this expression.

Implements PlotExpression.

virtual double PlotIndexExpression::sample ( double  sampleTime ) const

virtual

Samples the index expression for sampleTime.

This resolves the value of right() using sampleTime and uses the result as a sample time into left().

Parameters

sampleTime

The sample time to for right().

Returns

A sample, calculated as: left()->sample(right()->sample(sampleTime))

Implements PlotExpression.

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

• plotindexexpression.h