sjm.examples.robot
Class RobotParser

java.lang.Object
  |
  +--sjm.examples.robot.RobotParser

public class RobotParser

extends java.lang.Object

This class's start() method provides a parser that will recognize a command for a track robot and build a corresponding command object.

The grammar for the language that this class recognizes is:

     command      = pickCommand | placeCommand | 
                    scanCommand;
     pickCommand  = "pick" "carrier" "from" location;
     placeCommand = "place" "carrier" "at" location;
     scanCommand  = "scan" location;
     location     = Word; 
 

Constructor Summary

RobotParser()

Method Summary

Parser	command() Returns a parser that will recognize a command for a track robot and build a corresponding command object.
protected Parser	location()
protected Parser	pickCommand()
protected Parser	placeCommand()
protected Parser	scanCommand()
static Parser	start() Returns a parser that will recognize a command for a track robot and build a corresponding command object.

Methods inherited from class java.lang.Object

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

Constructor Detail

RobotParser

public RobotParser()

Method Detail

command

public Parser command()

Returns a parser that will recognize a command for a track robot and build a corresponding command object. (This method returns the same value as start()).

Returns:

a parser that will recognize a track robot command

location

protected Parser location()

pickCommand

protected Parser pickCommand()

placeCommand

protected Parser placeCommand()

scanCommand

protected Parser scanCommand()

start

public static Parser start()

Returns a parser that will recognize a command for a track robot and build a corresponding command object.

Returns:

a parser that will recognize a track robot command