org.teatrove.tea.parsetree
Class CompareExpression

java.lang.Object
  org.teatrove.tea.parsetree.Node
      org.teatrove.tea.parsetree.Expression
          org.teatrove.tea.parsetree.BinaryExpression
              org.teatrove.tea.parsetree.CompareExpression

All Implemented Interfaces:

Serializable, Cloneable

public class CompareExpression
extends BinaryExpression

A CompareExpression is otherwise known as a spaceship operation or compare operation and contains a left expression and a right expression to which a comparison is done between the two returning -1 if less then, 0 if equal, or 1 if greater than.

Author:

Nick Hagan

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.teatrove.tea.parsetree.Expression

Expression.Conversion

Constructor Summary

CompareExpression(SourceInfo info, Token operator, Expression left, Expression right)

Method Summary

Object	accept(NodeVisitor visitor) Every subclass of Node must override this method with the following: return visitor.visit(this).
boolean	isExceptionPossible() Returns true if an exception can be thrown while executing this Expression.

Methods inherited from class org.teatrove.tea.parsetree.BinaryExpression

clone, getLeftExpression, getOperator, getRightExpression, setLeftExpression, setRightExpression, setType

Methods inherited from class org.teatrove.tea.parsetree.Expression

convertTo, convertTo, forceConversion, getConversionChain, getInitialType, getType, getValue, isValueKnown, setInitialType

Methods inherited from class org.teatrove.tea.parsetree.Node

getSourceInfo, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

CompareExpression

public CompareExpression(SourceInfo info,
                         Token operator,
                         Expression left,
                         Expression right)

Method Detail

isExceptionPossible

public boolean isExceptionPossible()

Description copied from class: Expression

Returns true if an exception can be thrown while executing this Expression. By default, returns true only if a type conversion could cause an exception.

Overrides:

isExceptionPossible in class BinaryExpression

accept

public Object accept(NodeVisitor visitor)

Description copied from class: Node

Every subclass of Node must override this method with the following: return visitor.visit(this).

Overrides:

accept in class Expression

Parameters:

visitor - A visitor of this Node

Returns:

Node The Node returned by the visitor

See Also:

NodeVisitor