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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:

[legend]List of all members.

Public Methods
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.
virtual	~TAO_Constraint (void)

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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.

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Constructor & Destructor Documentation

virtual TAO_Constraint::~TAO_Constraint (  void    )  [inline, virtual]

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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_Noop_Constraint, TAO_Binary_Constraint, TAO_Unary_Constraint, TAO_Property_Constraint, and TAO_Literal_Constraint.

virtual TAO_Expression_Type TAO_Constraint::expr_type (  void    )  const [pure virtual]

Return the expression type represented by this node. Implemented in TAO_Noop_Constraint, TAO_Binary_Constraint, TAO_Unary_Constraint, TAO_Property_Constraint, and TAO_Literal_Constraint.

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

• Constraint_Nodes.h

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