slogo.instruction.arithmetic
Class UnaryExpression

java.lang.Object
  slogo.language.GrammarElement
      slogo.instruction.Instruction
          slogo.instruction.arithmetic.UnaryExpression

Direct Known Subclasses:

Negation

public abstract class UnaryExpression
extends Instruction

Field Summary

protected GrammarElement

myElement

Fields inherited from class slogo.language.GrammarElement

gelementsToValue

Constructor Summary

UnaryExpression(GrammarElement el)

Method Summary

java.lang.String	toString()
double	value(Context c)

Methods inherited from class slogo.instruction.Instruction

evaluate, evaluateNumericExpression

Methods inherited from class java.lang.Object

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

Field Detail

myElement

protected GrammarElement myElement

Constructor Detail

UnaryExpression

public UnaryExpression(GrammarElement el)

Method Detail

value

public double value(Context c)

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object