edu.ucsb.cs56.pconrad.parsing

Class Main

java.lang.Object

edu.ucsb.cs56.pconrad.parsing.Main

public class Main
extends Object

Constructor Summary

Constructors

Constructor and Description
Main()

Method Summary

Modifier and Type	Method and Description
static int	evaluate(String input) Call on the default interpreter interface to evaluate an expression
static boolean	handleInput(String input) Evaluate the input, catching exceptions as needed, and printing appropriate messages.
static void	main(String[] args)
static boolean	shouldExit(String input) Determines whether input contained a request to quit the program

Methods inherited from class java.lang.Object

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

Constructor Detail

Main

public Main()

Method Detail

evaluate

public static int evaluate(String input)
                    throws TokenizerException,
                           ParserException,
                           EvaluatorException

Call on the default interpreter interface to evaluate an expression

Parameters:

input - expression to evaluate

Returns:

value of expression as an int

Throws:

TokenizerException - bad tokens (illegal characters) in input

EvaluatorException - error such as division by zero

ParserException - syntax error in expression

shouldExit

public static boolean shouldExit(String input)

Determines whether input contained a request to quit the program

Parameters:

input - the input from the user to be evalulated

Returns:

true if main should exit (as determined by shouldExit

See Also:

shouldExit

handleInput

public static boolean handleInput(String input)

Evaluate the input, catching exceptions as needed, and printing appropriate messages.

Parameters:

input - the input from the user to be evalulated

Returns:

true if main should exit (as determined by shouldExit

See Also:

shouldExit

main

public static void main(String[] args)