slogo.instruction

Class NotEqual

java.lang.Object

slogo.GrammarElement

slogo.instruction.Instruction

slogo.instruction.NotEqual

public class NotEqual
extends Instruction

Field Summary

Fields

Modifier and Type	Field and Description
private GrammarElement	expression1
private GrammarElement	expression2

Fields inherited from class slogo.GrammarElement

gelementsToValue

Constructor Summary

Constructors

Constructor and Description
NotEqual(GrammarElement e, GrammarElement f) Represents a not equal instruction that can be executed

Method Summary

Modifier and Type	Method and Description
java.lang.Object	evaluate(Context c) Evaluate this language construct in some context.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

expression1

private GrammarElement expression1

expression2

private GrammarElement expression2

Constructor Detail

NotEqual

public NotEqual(GrammarElement e,
                GrammarElement f)

Represents a not equal instruction that can be executed

Parameters:

e - the first element in the not equal

f - the second element in the not equal

Method Detail

evaluate

public java.lang.Object evaluate(Context c)

Description copied from class: GrammarElement

Evaluate this language construct in some context. The evaluation may have side-effects, e.g., moving a turtle.

Specified by:

evaluate in class Instruction

Parameters:

c - context in which the evaluation takes place

Returns:

the result of evaluating the construct

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

Returns:

not equal with the two expressions