slogo.instruction

Class IsGreater

java.lang.Object

slogo.GrammarElement

slogo.instruction.Instruction

slogo.instruction.IsGreater

public class IsGreater
extends Instruction

Returns 1 if its first input is strictly greater than its second, or 0 otherwise

Field Summary

Fields

Modifier and Type	Field and Description
private ArithmeticBase	numOne
private ArithmeticBase	numTwo

Fields inherited from class slogo.GrammarElement

gelementsToValue

Constructor Summary

Constructors

Constructor and Description
IsGreater(ArithmeticBase num1, ArithmeticBase num2) Constructs an IsGreater instruction

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

numOne

private ArithmeticBase numOne

numTwo

private ArithmeticBase numTwo

Constructor Detail

IsGreater

public IsGreater(ArithmeticBase num1,
                 ArithmeticBase num2)

Constructs an IsGreater instruction

Parameters:

num1 - first ArithmeticBase in the comparison

num2 - second ArithmeticBase in the comparison

Method Detail

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

Returns:

the String representation of GREATER? num1 num2

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 - is the Context of what we are evaluating

Returns:

1 if valOne is greater than valTwo and 0 otherwise