slogo.instruction

Class Print

java.lang.Object

slogo.GrammarElement

slogo.instruction.Instruction

slogo.instruction.Print

public class Print
extends Instruction

The Print instruction prints an expression. When evaluated, the Print instruction evaluates the expression and prints the value to System.out using println.

Field Summary

Fields

Modifier and Type	Field and Description
private Expression	myExpression

Fields inherited from class slogo.GrammarElement

gelementsToValue

Constructor Summary

Constructors

Constructor and Description
Print(Expression e) Represents a Print expression

Method Summary

Methods

Modifier and Type	Method and Description
java.lang.Object	evaluate(Context c) Evaluate the expression and println it.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

myExpression

private Expression myExpression

Constructor Detail

Print

public Print(Expression e)

Represents a Print expression

Parameters:

e -

Method Detail

evaluate

public java.lang.Object evaluate(Context c)

Evaluate the expression and println it.

Overrides:

evaluate in class Instruction

Parameters:

c - is the Context in which the evaluation occurs

Returns:

null (probably should be the expression)

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

Returns:

PRINT followed by the expression