ast
Class VarExpr

java.lang.Object
  ast.ASTNode
      ast.Expr
          ast.VarExpr

public class VarExpr
extends Expr

The VarExpr class represents variable expressions. It contains the name of the variable. Note: these may actually be 'this', 'super', or 'null'. Also, these may or may not include a reference object name (if the variable is a field). Because fields are 'protected' in Bantam Java, the reference object name must always be either 'this' or 'super'.

See Also:

ASTNode, Expr

Field Summary

protected java.lang.String	name The name of the variable (possibly 'this', 'super', or 'null')
protected Expr	ref The optional reference object expression (must be 'this' or 'super' for non-arrays)

Fields inherited from class ast.ASTNode

charNum, lineNum, lineStr

Constructor Summary

VarExpr(int lineNum, Expr ref, java.lang.String name)
VarExpr constructor

Method Summary

java.lang.Object	accept(Visitor v) Visitor method
java.lang.String	getName() Get the name of the variable
Expr	getRef() Get the reference object expression Only applicable if variable is a field (otherwise this returns null)

Methods inherited from class ast.Expr

getExprType, setExprType

Methods inherited from class ast.ASTNode

getLineNum

Methods inherited from class java.lang.Object

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

Field Detail

ref

protected Expr ref

The optional reference object expression (must be 'this' or 'super' for non-arrays)

name

protected java.lang.String name

The name of the variable (possibly 'this', 'super', or 'null')

Constructor Detail

VarExpr

public VarExpr(int lineNum,
               Expr ref,
               java.lang.String name)

VarExpr constructor

Parameters:

lineNum - source line number corresponding to this AST node

ref - the optional reference object expression (must be 'this' or 'super' for non-arrays)

name - the name of the variable

Method Detail

getRef

public Expr getRef()

Get the reference object expression Only applicable if variable is a field (otherwise this returns null)

Returns:

reference object expression

getName

public java.lang.String getName()

Get the name of the variable

Returns:

name

accept

public java.lang.Object accept(Visitor v)

Visitor method

Specified by:

accept in class Expr

Parameters:

v - visitor object

Returns:

result of visiting this node

See Also:

Visitor