ast
Class ArrayExpr

java.lang.Object
  ast.ASTNode
      ast.Expr
          ast.ArrayExpr

public class ArrayExpr
extends Expr

The ArrayExpr class represents array expressions. It contains the name of the variable and an index expression. Note: these may or may not include a reference object name (if the array 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 Expr	index The index expression
protected java.lang.String	name The name of the variable (possibly 'this', 'super', or 'null')
protected Expr	ref The optional reference object (must be 'this' or 'super')

Fields inherited from class ast.ASTNode

charNum, lineNum, lineStr

Constructor Summary

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

Method Summary

java.lang.Object	accept(Visitor v) Visitor method
Expr	getIndex() Get the index expression
java.lang.String	getName() Get the name of the array
Expr	getRef() Get the reference object Only applicable if array 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 (must be 'this' or 'super')

name

protected java.lang.String name

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

index

protected Expr index

The index expression

Constructor Detail

ArrayExpr

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

ArrayExpr constructor

Parameters:

lineNum - source line number corresponding to this AST node

ref - the optional reference object (must be 'this' or 'super')

name - the name of the variable

index - the index expression

Method Detail

getRef

public Expr getRef()

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

Returns:

reference object

getName

public java.lang.String getName()

Get the name of the array

Returns:

name

getIndex

public Expr getIndex()

Get the index expression

Returns:

index expression

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