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      1 /* GENERATED SOURCE. DO NOT MODIFY. */
      2 /*
      3 **********************************************************************
      4 *   Copyright (c) 2002, International Business Machines Corporation
      5 *   and others.  All Rights Reserved.
      6 **********************************************************************
      7 *   Date        Name        Description
      8 *   01/14/2002  aliu        Creation.
      9 **********************************************************************
     10 */
     11 
     12 package android.icu.text;
     13 
     14 /**
     15  * <code>UnicodeReplacer</code> defines a protocol for objects that
     16  * replace a range of characters in a Replaceable string with output
     17  * text.  The replacement is done via the Replaceable API so as to
     18  * preserve out-of-band data.
     19  * @author Alan Liu
     20  */
     21 interface UnicodeReplacer {
     22 
     23     /**
     24      * Replace characters in 'text' from 'start' to 'limit' with the
     25      * output text of this object.  Update the 'cursor' parameter to
     26      * give the cursor position and return the length of the
     27      * replacement text.
     28      *
     29      * @param text the text to be matched
     30      * @param start inclusive start index of text to be replaced
     31      * @param limit exclusive end index of text to be replaced;
     32      * must be greater than or equal to start
     33      * @param cursor output parameter for the cursor position.
     34      * Not all replacer objects will update this, but in a complete
     35      * tree of replacer objects, representing the entire output side
     36      * of a transliteration rule, at least one must update it.
     37      * @return the number of 16-bit code units in the text replacing
     38      * the characters at offsets start..(limit-1) in text
     39      */
     40     public abstract int replace(Replaceable text,
     41                                 int start,
     42                                 int limit,
     43                                 int[] cursor);
     44 
     45     /**
     46      * Returns a string representation of this replacer.  If the
     47      * result of calling this function is passed to the appropriate
     48      * parser, typically TransliteratorParser, it will produce another
     49      * replacer that is equal to this one.
     50      * @param escapeUnprintable if TRUE then convert unprintable
     51      * character to their hex escape representations, \\uxxxx or
     52      * \\Uxxxxxxxx.  Unprintable characters are defined by
     53      * Utility.isUnprintable().
     54      */
     55     public abstract String toReplacerPattern(boolean escapeUnprintable);
     56 
     57     /**
     58      * Union the set of all characters that may output by this object
     59      * into the given set.
     60      * @param toUnionTo the set into which to union the output characters
     61      */
     62     public abstract void addReplacementSetTo(UnicodeSet toUnionTo);
     63 }
     64 
     65 //eof
     66