ptolemy.moml.unit
Class EquationVisitor

java.lang.Object
  ptolemy.moml.unit.EquationVisitor

Direct Known Subclasses:

ExpandPortNames

public abstract class EquationVisitor
extends java.lang.Object

An Abstract class that specifies all the necessary aspects of visitors to a UnitEquation.

The generic version of the method to visit a UnitEquation, UnitExpr, and UnitTerm are specified here. To do a specific kind of visit create a class that extends EquationVisitor that overrides some one or more of these methods. These methods are specified as throwing an IllegalActionException to make it possible for the overridden methods in a subclass to throw IllegalActionException.

Since:

Ptolemy II 8.0

Version:

$Id: EquationVisitor.java 57044 2010-01-27 22:41:05Z cxh $

Author:

Rowland R Johnson

Accepted Rating:

Red (rowland)

Proposed Rating:

Red (rowland)

Constructor Summary

EquationVisitor()

Method Summary

protected java.lang.Object	_visitUnitEquation(UnitEquation uEquation) Visit a UnitEquation by visiting the left and right sides of the equation.
protected java.lang.Object	_visitUnitExpr(UnitExpr unitExpr) Visit a UnitExpr by visiting the UnitRerms.
protected java.lang.Object	_visitUnitTerm(UnitTerm uTerm) Visit a UnitTerm by visiting the UnitExpr if there is one.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

EquationVisitor

public EquationVisitor()

Method Detail

_visitUnitEquation

protected java.lang.Object _visitUnitEquation(UnitEquation uEquation)
                                       throws IllegalActionException

Visit a UnitEquation by visiting the left and right sides of the equation.

Parameters:

uEquation - The UnitEquation to visit.

Returns:

Null, can be overridden in a concrete visitor.

Throws:

IllegalActionException - Not thrown in this base class.

_visitUnitExpr

protected java.lang.Object _visitUnitExpr(UnitExpr unitExpr)
                                   throws IllegalActionException

Visit a UnitExpr by visiting the UnitRerms.

Parameters:

unitExpr - The UnitExpr to visit.

Returns:

Null, can be overridden in a concrete visitor.

Throws:

IllegalActionException - Not thrown in this base class.

_visitUnitTerm

protected java.lang.Object _visitUnitTerm(UnitTerm uTerm)
                                   throws IllegalActionException

Visit a UnitTerm by visiting the UnitExpr if there is one. This method will almost certainly be overridden in a subclass.

Parameters:

uTerm - The UnitTerm to visit.

Returns:

Null, can be overridden in a concrete visitor.

Throws:

IllegalActionException - Not thrown in this base class.