streamit.frontend.nodes
Class ExprField

java.lang.Object
  streamit.frontend.nodes.FENode
      streamit.frontend.nodes.Expression
          streamit.frontend.nodes.ExprField

public class ExprField
extends Expression

A reference to a named field of a StreamIt structure. This is the expression "foo.bar". It contains a "left" expression and the name of the field being referenced.

Version:

$Id: ExprField.java,v 1.5 2003/10/09 19:50:59 dmaze Exp $

Author:

David Maze <dmaze@cag.lcs.mit.edu>

Constructor Summary

ExprField(FEContext context, Expression left, String name)
Creates a new field-reference expression, referencing the named field of the specified expression.

Method Summary

Object	accept(FEVisitor v) Accept a front-end visitor.
boolean	equals(Object other)
Expression	getLeft() Returns the expression we're taking a field from.
String	getName() Returns the name of the field.
int	hashCode()
boolean	isLValue() Determine if this expression can be assigned to.
String	toString()

Methods inherited from class streamit.frontend.nodes.FENode

getContext

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

ExprField

public ExprField(FEContext context,
                 Expression left,
                 String name)

Creates a new field-reference expression, referencing the named field of the specified expression.

Method Detail

getLeft

public Expression getLeft()

Returns the expression we're taking a field from.

getName

public String getName()

Returns the name of the field.

accept

public Object accept(FEVisitor v)

Accept a front-end visitor.

Specified by:

accept in class FENode

Parameters:

v - visitor object

Returns:

the value returned by the method corresponding to this type in the visitor object

isLValue

public boolean isLValue()

Determine if this expression can be assigned to. Fields can always be assigned to.

Overrides:

isLValue in class Expression

Returns:

always true

toString

public String toString()

Overrides:

toString in class Object

equals

public boolean equals(Object other)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object