Class IntegralPartSubstitution

java.lang.Object

com.ibm.icu.text.NFSubstitution

com.ibm.icu.text.IntegralPartSubstitution

class IntegralPartSubstitution
extends NFSubstitution

A substitution that formats the number's integral part. This is represented by << in a fraction rule.

Field Summary

Fields inherited from class NFSubstitution

numberFormat, pos, ruleSet

Constructor Summary

Constructors

Constructor	Description
IntegralPartSubstitution(int pos, NFRuleSet ruleSet, String description)	Constructs an IntegralPartSubstitution.

Method Summary

Modifier and Type	Method	Description
double	calcUpperBound(double oldUpperBound)	An IntegralPartSubstitution sets the upper bound back up so all potentially matching rules are considered.
double	composeRuleValue(double newRuleValue, double oldRuleValue)	Returns the sum of the result of parsing the substitution and the owning rule's base value.
(package private) char	tokenChar()	An IntegralPartSubstitution's token character is <
double	transformNumber(double number)	Returns the number's integral part.
long	transformNumber(long number)	Returns the number's integral part.

Methods inherited from class NFSubstitution

doParse, doSubstitution, doSubstitution, equals, getPos, hashCode, isModulusSubstitution, makeSubstitution, setDecimalFormatSymbols, setDivisor, toString

Methods inherited from class Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Details

IntegralPartSubstitution

IntegralPartSubstitution(int pos,
 NFRuleSet ruleSet,
 String description)

Constructs an IntegralPartSubstitution. This just calls the superclass constructor.

Method Details

transformNumber

public long transformNumber(long number)

Returns the number's integral part. (For a long, that's just the number unchanged.)

Specified by:

transformNumber in class NFSubstitution

Parameters:

number - The number being formatted

Returns:

"number" unchanged

transformNumber

public double transformNumber(double number)

Returns the number's integral part.

Specified by:

transformNumber in class NFSubstitution

Parameters:

number - The integral part of the number being formatted

Returns:

floor(number)

composeRuleValue

public double composeRuleValue(double newRuleValue,
 double oldRuleValue)

Returns the sum of the result of parsing the substitution and the owning rule's base value. (The owning rule, at best, has an integral-part substitution and a fractional-part substitution, so we can safely just add them.)

Specified by:

composeRuleValue in class NFSubstitution

Parameters:

newRuleValue - The result of matching the substitution

oldRuleValue - The partial result of the parse prior to calling this function

Returns:

oldRuleValue + newRuleValue

calcUpperBound

public double calcUpperBound(double oldUpperBound)

An IntegralPartSubstitution sets the upper bound back up so all potentially matching rules are considered.

Specified by:

calcUpperBound in class NFSubstitution

Parameters:

oldUpperBound - Ignored

Returns:

Double.MAX_VALUE

tokenChar

char tokenChar()

An IntegralPartSubstitution's token character is <

Specified by:

tokenChar in class NFSubstitution

Returns:

'<'