QgsExpression::Visitor Class Reference

support for visitor pattern - algorithms dealing with the expressions may be implemented without modifying the Node classes More...

#include <qgsexpression.h>

List of all members.

Public Member Functions
virtual	~Visitor ()
virtual void	visit (NodeUnaryOperator *n)=0
virtual void	visit (NodeBinaryOperator *n)=0
virtual void	visit (NodeInOperator *n)=0
virtual void	visit (NodeFunction *n)=0
virtual void	visit (NodeLiteral *n)=0
virtual void	visit (NodeColumnRef *n)=0
virtual void	visit (NodeCondition *n)=0

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Detailed Description

support for visitor pattern - algorithms dealing with the expressions may be implemented without modifying the Node classes

Definition at line 450 of file qgsexpression.h.

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Constructor & Destructor Documentation

virtual QgsExpression::Visitor::~Visitor

(

)

[inline, virtual]

Definition at line 453 of file qgsexpression.h.

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Member Function Documentation

virtual void QgsExpression::Visitor::visit

(

NodeUnaryOperator *

n

)

[pure virtual]

Referenced by QgsExpression::NodeUnaryOperator::accept(), QgsExpression::NodeBinaryOperator::accept(), QgsExpression::NodeInOperator::accept(), QgsExpression::NodeFunction::accept(), QgsExpression::NodeLiteral::accept(), QgsExpression::NodeColumnRef::accept(), and QgsExpression::NodeCondition::accept().

virtual void QgsExpression::Visitor::visit

(

NodeBinaryOperator *

n

)

[pure virtual]

virtual void QgsExpression::Visitor::visit

(

NodeInOperator *

n

)

[pure virtual]

virtual void QgsExpression::Visitor::visit

(

NodeFunction *

n

)

[pure virtual]

virtual void QgsExpression::Visitor::visit

(

NodeLiteral *

n

)

[pure virtual]

virtual void QgsExpression::Visitor::visit

(

NodeColumnRef *

n

)

[pure virtual]

virtual void QgsExpression::Visitor::visit

(

NodeCondition *

n

)

[pure virtual]

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

• src/core/qgsexpression.h