A symbol table maintains two kinds of mappings. The first is - * between symbolic names and their values. For example, if the - * variable with the name "start" is set to the value "alpha" - * (perhaps, though not necessarily, through an expression such as - * "$start=alpha"), then the call lookup("start") will return the - * char[] array ['a', 'l', 'p', 'h', 'a']. - * - *
The second kind of mapping is between character values and - * UnicodeMatcher objects. This is used by RuleBasedTransliterator, - * which uses characters in the private use area to represent objects - * such as UnicodeSets. If U+E015 is mapped to the UnicodeSet [a-z], - * then lookupMatcher(0xE015) will return the UnicodeSet [a-z]. - * - *
Finally, a symbol table defines parsing behavior for symbolic - * names. All symbolic names start with the SYMBOL_REF character. - * When a parser encounters this character, it calls parseReference() - * with the position immediately following the SYMBOL_REF. The symbol - * table parses the name, if there is one, and returns it. - * - * @draft ICU 2.8 - * @deprecated This is a draft API and might change in a future release of ICU. - */ -@Deprecated -public interface SymbolTable { - - /** - * The character preceding a symbol reference name. - * @draft ICU 2.8 - * @deprecated This is a draft API and might change in a future release of ICU. - */ - @Deprecated - static final char SYMBOL_REF = '$'; - - /** - * Lookup the characters associated with this string and return it. - * Return {@code null} if no such name exists. The resultant - * array may have length zero. - * @param s the symbolic name to lookup - * @return a char array containing the name's value, or null if - * there is no mapping for s. - * @draft ICU 2.8 - * @deprecated This is a draft API and might change in a future release of ICU. - */ - @Deprecated - char[] lookup(String s); - - /** - * Lookup the UnicodeMatcher associated with the given character, and - * return it. Return {@code null} if not found. - * @param ch a 32-bit code point from 0 to 0x10FFFF inclusive. - * @return the UnicodeMatcher object represented by the given - * character, or null if there is no mapping for ch. - * @draft ICU 2.8 - * @deprecated This is a draft API and might change in a future release of ICU. - */ - @Deprecated - UnicodeMatcher lookupMatcher(int ch); - - /** - * Parse a symbol reference name from the given string, starting - * at the given position. If no valid symbol reference name is - * found, return null and leave pos unchanged. That is, if the - * character at pos cannot start a name, or if pos is at or after - * text.length(), then return null. This indicates an isolated - * SYMBOL_REF character. - * @param text the text to parse for the name - * @param 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. - * @param limit the index after the last character to be parsed. - * @return the parsed name, or null if there is no valid symbolic - * name at the given position. - * @draft ICU 2.8 - * @deprecated This is a draft API and might change in a future release of ICU. - */ - @Deprecated - String parseReference(String text, ParsePosition pos, int limit); -}