slogo.expression
Class Subroutine

java.lang.Object
  slogo.language.GrammarElement
      slogo.expression.Expression
          slogo.expression.Subroutine

public class Subroutine
extends Expression

Field Summary

protected java.lang.String	myName
protected StrictInstructionList	mySIL

Fields inherited from class slogo.language.GrammarElement

gelementsToValue

Constructor Summary

Subroutine(IdentifierToken id, StrictInstructionList sil)

Subroutine(java.lang.String name)

Method Summary

java.lang.Double	evaluate(Context c) Evaluate this language construct in some context.
double	value(Context c)

Methods inherited from class java.lang.Object

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

Field Detail

myName

protected java.lang.String myName

mySIL

protected StrictInstructionList mySIL

Constructor Detail

Subroutine

public Subroutine(java.lang.String name)

Subroutine

public Subroutine(IdentifierToken id,
                  StrictInstructionList sil)

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.

Overrides:

evaluate in class Expression

Parameters:

c - context in which the evaluation takes place

Returns:

the result of evaluating the construct

value

public double value(Context c)

Specified by:

value in class Expression