Package com.ibm.icu.text

Class FractionalPartSubstitution

java.lang.Object
com.ibm.icu.text.NFSubstitution
com.ibm.icu.text.FractionalPartSubstitution
class FractionalPartSubstitution extends NFSubstitution
A substitution that formats the fractional part of a number. This is represented by >> in a fraction rule.

  • Field Details

    • byDigits

      private final boolean byDigits
      true if this substitution should have the default "by digits" behavior, false otherwise

    • useSpaces

      private final boolean useSpaces
      true if we automatically insert spaces to separate names of digits set to false by '>>>' in fraction rules, used by Thai.

  • Constructor Details

    • FractionalPartSubstitution

      FractionalPartSubstitution(int pos, NFRuleSet ruleSet, String description)
      Constructs a FractionalPartSubstitution. This object keeps a flag telling whether it should format by digits or not. In addition, it marks the rule set it calls (if any) as a fraction rule set.

  • Method Details

    • doSubstitution

      public void doSubstitution(double number, StringBuilder toInsertInto, int position, int recursionCount)
      If in "by digits" mode, fills in the substitution one decimal digit at a time using the rule set containing this substitution. Otherwise, uses the superclass function.
      Overrides:
      doSubstitution in class NFSubstitution
      Parameters:
      number - The number being formatted
      toInsertInto - The string to insert the result of formatting the substitution into
      position - The position of the owning rule's rule text in toInsertInto

    • transformNumber

      public long transformNumber(long number)
      Returns the fractional part of the number, which will always be zero if it's a long.
      Specified by:
      transformNumber in class NFSubstitution
      Parameters:
      number - The number being formatted
      Returns:
      0

    • transformNumber

      public double transformNumber(double number)
      Returns the fractional part of the number.
      Specified by:
      transformNumber in class NFSubstitution
      Parameters:
      number - The number being formatted.
      Returns:
      number - floor(number)

    • doParse

      public Number doParse(String text, ParsePosition parsePosition, double baseValue, double upperBound, boolean lenientParse, int nonNumericalExecutedRuleMask)
      If in "by digits" mode, parses the string as if it were a string of individual digits; otherwise, uses the superclass function.
      Overrides:
      doParse in class NFSubstitution
      Parameters:
      text - The string to parse
      parsePosition - Ignored on entry, but updated on exit to point to the first unmatched character
      baseValue - The partial parse result prior to entering this function
      upperBound - Only consider rules with base values lower than this when filling in the substitution
      lenientParse - If true, try matching the text as numerals if matching as words doesn't work
      Returns:
      If the match was successful, the current partial parse result; otherwise Long.valueOf(0). The result is either a Long or a Double.

    • composeRuleValue

      public double composeRuleValue(double newRuleValue, double oldRuleValue)
      Returns the sum of the two partial parse results.
      Specified by:
      composeRuleValue in class NFSubstitution
      Parameters:
      newRuleValue - The result of parsing the substitution
      oldRuleValue - The partial parse result prior to calling this function
      Returns:
      newRuleValue + oldRuleValue

    • calcUpperBound

      public double calcUpperBound(double oldUpperBound)
      Not used.
      Specified by:
      calcUpperBound in class NFSubstitution
      Parameters:
      oldUpperBound - The current upper-bound setting. The new upper bound can't be any higher.

    • tokenChar

      char tokenChar()
      The token character for a FractionalPartSubstitution is >.
      Specified by:
      tokenChar in class NFSubstitution
      Returns:
      '>'