visad.data.units
Class UnitParser

java.lang.Object
  extended by visad.data.units.UnitParser
All Implemented Interfaces:
UnitParserConstants
Direct Known Subclasses:
UnitParser

public class UnitParser
extends java.lang.Object
implements UnitParserConstants


Field Summary
protected  boolean isTime
          Whether or not we're decoding a time unit.
 Token jj_nt
           
protected static long julianDayOrigin
          The Julian day number of the (artificial) time origin.
 boolean lookingAhead
           
protected static Unit second
          The canonical time unit.
 Token token
           
 UnitParserTokenManager token_source
           
protected static UnitsDB unitsDB
          The units database.
 
Fields inherited from interface visad.data.units.UnitParserConstants
DATE, DAY, DECIMAL, DEFAULT, DIGIT, DIVIDE, EOF, EXP, FROM, HOUR, INT, INTEGER, LETTER, MINUTE, MONTH, NAME, REAL, SECOND, SHIFT, SIGN, SINCE, TIME, tokenImage, WHITESPACE, YEAR
 
Constructor Summary
UnitParser(java.io.InputStream stream)
           
UnitParser(java.io.Reader stream)
           
UnitParser(UnitParserTokenManager tm)
           
 
Method Summary
 void disable_tracing()
           
 void enable_tracing()
           
static double encodeTimestamp(int year, int month, int day, int hour, int minute, float second, int zone)
          Encode a timestamp as a double value in units of seconds.
 ParseException generateParseException()
           
 Token getNextToken()
           
 Token getToken(int index)
           
static long julianDay(int year, int month, int day)
          Compute the Julian day number of a date.
static void main(java.lang.String[] args)
          Test this class.
 void multiply()
           
 Unit nameExpression()
           
 double numberExpression()
           
 double numericalTerm()
           
 Unit powerExpression()
           
 void ReInit(java.io.InputStream stream)
           
 void ReInit(java.io.Reader stream)
           
 void ReInit(UnitParserTokenManager tm)
           
 double shiftExpression()
           
 double timestampExpression()
           
 double timestampTerm()
           
 Unit unitProductList()
           
 Unit unitSpec()
           
 double valueExpression()
           
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

unitsDB

protected static UnitsDB unitsDB
The units database.


second

protected static final Unit second
The canonical time unit.


isTime

protected boolean isTime
Whether or not we're decoding a time unit.


julianDayOrigin

protected static final long julianDayOrigin
The Julian day number of the (artificial) time origin.


token_source

public UnitParserTokenManager token_source

token

public Token token

jj_nt

public Token jj_nt

lookingAhead

public boolean lookingAhead
Constructor Detail

UnitParser

public UnitParser(java.io.InputStream stream)

UnitParser

public UnitParser(java.io.Reader stream)

UnitParser

public UnitParser(UnitParserTokenManager tm)
Method Detail

julianDay

public static long julianDay(int year,
                             int month,
                             int day)
Compute the Julian day number of a date.


encodeTimestamp

public static double encodeTimestamp(int year,
                                     int month,
                                     int day,
                                     int hour,
                                     int minute,
                                     float second,
                                     int zone)
Encode a timestamp as a double value in units of seconds.


main

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

Throws:
java.lang.Exception

unitSpec

public final Unit unitSpec()
                    throws ParseException
Throws:
ParseException

unitProductList

public final Unit unitProductList()
                           throws ParseException
Throws:
ParseException

multiply

public final void multiply()
                    throws ParseException
Throws:
ParseException

powerExpression

public final Unit powerExpression()
                           throws ParseException
Throws:
ParseException

nameExpression

public final Unit nameExpression()
                          throws ParseException
Throws:
ParseException

numberExpression

public final double numberExpression()
                              throws ParseException
Throws:
ParseException

shiftExpression

public final double shiftExpression()
                             throws ParseException
Throws:
ParseException

valueExpression

public final double valueExpression()
                             throws ParseException
Throws:
ParseException

numericalTerm

public final double numericalTerm()
                           throws ParseException
Throws:
ParseException

timestampExpression

public final double timestampExpression()
                                 throws ParseException
Throws:
ParseException

timestampTerm

public final double timestampTerm()
                           throws ParseException
Throws:
ParseException

ReInit

public void ReInit(java.io.InputStream stream)

ReInit

public void ReInit(java.io.Reader stream)

ReInit

public void ReInit(UnitParserTokenManager tm)

getNextToken

public final Token getNextToken()

getToken

public final Token getToken(int index)

generateParseException

public final ParseException generateParseException()

enable_tracing

public final void enable_tracing()

disable_tracing

public final void disable_tracing()