slogo.instruction

Class UnaryExpression

java.lang.Object

slogo.GrammarElement

slogo.instruction.Instruction

slogo.instruction.ArithmeticInstruction

slogo.instruction.UnaryExpression

Direct Known Subclasses:

Negation

public abstract class UnaryExpression
extends ArithmeticInstruction

Represents a unary expression

Field Summary

Fields

Modifier and Type	Field and Description
protected ArithmeticBase	myExpression

Fields inherited from class slogo.GrammarElement

gelementsToValue

Constructor Summary

Constructors

Constructor and Description
UnaryExpression(ArithmeticBase e) Represents a unary expression

Method Summary

Modifier and Type	Method and Description
java.lang.String	toString()
double	value(Context c)

Methods inherited from class slogo.instruction.ArithmeticInstruction

evaluate

Methods inherited from class java.lang.Object

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

Field Detail

myExpression

protected ArithmeticBase myExpression

Constructor Detail

UnaryExpression

public UnaryExpression(ArithmeticBase e)

Represents a unary expression

Parameters:

e - the expression

Method Detail

value

public double value(Context c)

Specified by:

value in class ArithmeticInstruction

Parameters:

c - is the Context of what value we are obtaining

Returns:

the result of evaluating a Unary Expression

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

Returns:

a string representation of the Unary Expression