Package com.ibm.icu.text

Class UnicodeSet.XSymbolTable

  • All Implemented Interfaces:
    SymbolTable
    Enclosing class:
    UnicodeSet
    public abstract static class UnicodeSet.XSymbolTable
extends Object
implements SymbolTable
    Internal class for customizing UnicodeSet parsing of properties. TODO: extend to allow customizing of codepoint ranges
    Author:
    medavis
    Status:
    Draft ICU3.8 (retain).

    • Constructor Detail

      • XSymbolTable

        public XSymbolTable()
        Default constructor
        Status:
        Draft ICU3.8 (retain).

    • Method Detail

      • lookupMatcher

        public UnicodeMatcher lookupMatcher​(int i)
        Supplies default implementation for SymbolTable (no action).
        Specified by:
        lookupMatcher in interface SymbolTable
        Parameters:
        i - a 32-bit code point from 0 to 0x10FFFF inclusive.
        Returns:
        the UnicodeMatcher object represented by the given character, or null if there is no mapping for ch.
        Status:
        Draft ICU3.8 (retain).

      • applyPropertyAlias

        public boolean applyPropertyAlias​(String propertyName,
                                  String propertyValue,
                                  UnicodeSet result)
        Override the interpretation of the sequence [:propertyName=propertyValue:] (and its negated and Perl-style variant). The propertyName and propertyValue may be existing Unicode aliases, or may not be.

        This routine will be called whenever the parsing of a UnicodeSet pattern finds such a propertyName+propertyValue combination.

        Parameters:
        propertyName - the name of the property
        propertyValue - the name of the property value
        result - UnicodeSet value to change a set to which the characters having the propertyName+propertyValue are to be added.
        Returns:
        returns true if the propertyName+propertyValue combination is to be overridden, and the characters with that property have been added to the UnicodeSet, and returns false if the propertyName+propertyValue combination is not recognized (in which case result is unaltered).
        Status:
        Draft ICU3.8 (retain).

      • lookup

        public char[] lookup​(String s)
        Supplies default implementation for SymbolTable (no action).
        Specified by:
        lookup in interface SymbolTable
        Parameters:
        s - the symbolic name to lookup
        Returns:
        a char array containing the name's value, or null if there is no mapping for s.
        Status:
        Draft ICU3.8 (retain).

      • parseReference

        public String parseReference​(String text,
                             ParsePosition pos,
                             int limit)
        Supplies default implementation for SymbolTable (no action).
        Specified by:
        parseReference in interface SymbolTable
        Parameters:
        text - the text to parse for the name
        pos - on entry, the index of the first character to parse. This is the character following the SYMBOL_REF character. On exit, the index after the last parsed character. If the parse failed, pos is unchanged on exit.
        limit - the index after the last character to be parsed.
        Returns:
        the parsed name, or null if there is no valid symbolic name at the given position.
        Status:
        Draft ICU3.8 (retain).