slogo.expression

Class ArithmeticBase

java.lang.Object

slogo.GrammarElement

slogo.expression.ArithmeticBase

Direct Known Subclasses:

Number, Variable

public abstract class ArithmeticBase
extends GrammarElement

The "base" or factor of arithmetic instructions (a number or a variable)

Field Summary

Fields inherited from class slogo.GrammarElement

gelementsToValue

Constructor Summary

Constructors

Constructor and Description
ArithmeticBase()

Method Summary

Modifier and Type	Method and Description
java.lang.Double	evaluate(Context c) Evaluate this language construct in some context.
abstract double	value(Context c)

Methods inherited from class java.lang.Object

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

Constructor Detail

ArithmeticBase

public ArithmeticBase()

Method Detail

evaluate

public java.lang.Double 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 GrammarElement

Parameters:

c - context in which the evaluation takes place

Returns:

the result of evaluating the construct

value

public abstract double value(Context c)