elan.instruction
Class If

java.lang.Object
  |
  +--elan.GrammarElement
        |
        +--elan.instruction.Instruction
              |
              +--elan.instruction.If

public class If

extends Instruction

Field Summary

protected Expression	myExpression
protected StrictInstructionList	myList

Fields inherited from class elan.GrammarElement

functionMap, ourMap

Constructor Summary

If(Expression e, StrictInstructionList sil)

Method Summary

java.lang.Object	evaluate(Context c) Evaluate this language construct in some context.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

myExpression

protected Expression myExpression

myList

protected StrictInstructionList myList

Constructor Detail

If

public If(Expression e,
          StrictInstructionList sil)

Method Detail

evaluate

public java.lang.Object 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.

Overrides:

evaluate in class Instruction

Following copied from class: elan.GrammarElement

Parameters:

is - the context in which the evaluation takes place

Returns:

the result of evaluating the construct

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object