org.shiftone.bigcalc
Class Calculator

java.lang.Object
  org.shiftone.bigcalc.Calculator

All Implemented Interfaces:

Functor

public class Calculator

extends java.lang.Object

implements Functor

This is the main class that should be used to turn a string into a functor. Once instanciated, this functor's behavior will be based on the string's expression. Instances of this class are thread safe, as should be all functors. It is most efficient if functor instances like this one are reused rather than parsed over and over again.

Version:

$Revision: 1.13 $

Author:

$Author: jeffdrost $

Constructor Summary

Calculator(java.lang.String text)

Method Summary

java.lang.Object	evaluate(Context context)
static void	main(java.lang.String[] args)
static Functor	parse(java.lang.String text, FunctorFactory functorFactory)
java.lang.String	print(Context context)
void	print(java.lang.StringBuffer sb, Context context)
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

Calculator

public Calculator(java.lang.String text)
           throws java.lang.Exception

Method Detail

evaluate

public java.lang.Object evaluate(Context context)
                          throws java.lang.Exception

Specified by:

evaluate in interface Functor

Throws:

java.lang.Exception

print

public void print(java.lang.StringBuffer sb,
                  Context context)
           throws java.lang.Exception

Specified by:

print in interface Functor

Throws:

java.lang.Exception

print

public java.lang.String print(Context context)
                       throws java.lang.Exception

Throws:

java.lang.Exception

parse

public static Functor parse(java.lang.String text,
                            FunctorFactory functorFactory)
                     throws ParseException

Throws:

ParseException

main

public static void main(java.lang.String[] args)
                 throws java.lang.Exception

Throws:

java.lang.Exception

toString

public java.lang.String toString()