slogo.instruction

Class ShowTurtle

java.lang.Object

slogo.GrammarElement

slogo.instruction.Instruction

slogo.instruction.ShowTurtle

public class ShowTurtle
extends Instruction

A SHOWTURTLE instruction has no components: when called, it will show the turtle from the GUI view. To evaluate a SHOWTURTLE instruction, the turtle is made visible and null is returned.

The value returned by evaluating a SHOWTURTLE instruction is the instruction itself.

Field Summary

Fields

Modifier and Type	Field and Description
(package private) java.awt.Graphics	g

Fields inherited from class slogo.GrammarElement

gelementsToValue

Constructor Summary

Constructors

Constructor and Description
ShowTurtle()

Method Summary

Modifier and Type	Method and Description
java.lang.Object	evaluate(Context c) Evaluate this instruction in a Context.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

g

java.awt.Graphics g

Constructor Detail

ShowTurtle

public ShowTurtle()

Method Detail

evaluate

public java.lang.Object evaluate(Context c)

Evaluate this instruction in a Context.

Specified by:

evaluate in class Instruction

Parameters:

c - the Context for the evaluation

Returns:

null

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

Returns:

a String representing this instruction as ST