TAO_Constraint Class Reference

TAO_Constraint is the base class of all nodes on the constraint expression tree. More...

#include <Constraint_Nodes.h>

Inheritance diagram for TAO_Constraint:

Collaboration diagram for TAO_Constraint:

Public Member Functions
virtual int	accept (TAO_Constraint_Visitor *visitor)=0
virtual TAO_Expression_Type	expr_type (void) const =0
	Return the expression type represented by this node. More...
virtual	~TAO_Constraint (void)

Detailed Description

TAO_Constraint is the base class of all nodes on the constraint expression tree.

An TAO_Constraint knows what type of operation or entity it represents, and which method on TAO_Constraint_Visitor correlates to its type. When the accept method is invoked, a subclass dispatches the method on an TAO_Constraint_Visitor correlating to its type.

Constructor & Destructor Documentation

virtual TAO_Constraint::~TAO_Constraint ( void  )

inlinevirtual

Member Function Documentation

virtual int TAO_Constraint::accept ( TAO_Constraint_Visitor *  visitor )

pure virtual

Implementing the pattern of double dispatching, each subclass of TAO_Constraint will call back on an InterpreterVisitor the method to handle a node of its ExpressionType.

Implemented in TAO_Literal_Constraint, TAO_Property_Constraint, TAO_Unary_Constraint, TAO_Binary_Constraint, and TAO_Noop_Constraint.

virtual TAO_Expression_Type TAO_Constraint::expr_type ( void  ) const

pure virtual

Return the expression type represented by this node.

Implemented in TAO_Literal_Constraint, TAO_Property_Constraint, TAO_Unary_Constraint, TAO_Binary_Constraint, and TAO_Noop_Constraint.

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

• Constraint_Nodes.h