visad.data.units
Class Parser

java.lang.Object
  visad.data.units.Parser

Direct Known Subclasses:

Parser

public class Parser
extends Object

Class for parsing unit specifications.

Field Summary

protected static Parser	parser The singleton instance of this class.
protected static UnitParser	unitParser The unit parser.

Constructor Summary

protected

Parser() Default constructor.

Method Summary

static Parser	instance() Obtain the singleton instance of this class.
static void	main(String[] args) Test this class.
static Unit	parse(String spec) Parse a string unit-specification.

Methods inherited from class java.lang.Object

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

Field Detail

unitParser

protected static final UnitParser unitParser

The unit parser.

parser

protected static final Parser parser

The singleton instance of this class.

Constructor Detail

Parser

protected Parser()

Default constructor. Protected to ensure use of singleton.

Method Detail

instance

public static Parser instance()

Obtain the singleton instance of this class. Strictly speaking, this isn't necessary since parse() is a class method.

parse

public static Unit parse(String spec)
                  throws ParseException,
                         NoSuchUnitException

Parse a string unit-specification.

Parameters:

spec - The string unit-specification.

Throws:

ParseException - An error occurred while parsing the specification.

UnitException - if spec requires an unsupported operation.

NoSuchUnitException

Precondition:

The specification is non-null.

main

public static void main(String[] args)
                 throws ParseException,
                        UnitException

Test this class.

Throws:

ParseException

UnitException