1 // 2016 and later: Unicode, Inc. and others. 2 // License & terms of use: http://www.unicode.org/copyright.html#License 3 /* 4 ******************************************************************************* 5 * Copyright (C) 2014, International Business Machines Corporation and * 6 * others. All Rights Reserved. * 7 ******************************************************************************* 8 */ 9 package com.ibm.icu.text; 10 11 import java.text.CharacterIterator; 12 13 import com.ibm.icu.util.BytesTrie.Result; 14 import com.ibm.icu.util.CharsTrie; 15 16 class CharsDictionaryMatcher extends DictionaryMatcher { 17 private CharSequence characters; 18 19 public CharsDictionaryMatcher(CharSequence chars) { 20 characters = chars; 21 } 22 23 @Override 24 public int matches(CharacterIterator text_, int maxLength, int[] lengths, int[] count_, int limit, int[] values) { 25 UCharacterIterator text = UCharacterIterator.getInstance(text_); 26 CharsTrie uct = new CharsTrie(characters, 0); 27 int c = text.nextCodePoint(); 28 if (c == UCharacterIterator.DONE) { 29 return 0; 30 } 31 Result result = uct.firstForCodePoint(c); 32 // TODO: should numChars count Character.charCount? 33 int numChars = 1; 34 int count = 0; 35 for (;;) { 36 if (result.hasValue()) { 37 if (count < limit) { 38 if (values != null) { 39 values[count] = uct.getValue(); 40 } 41 lengths[count] = numChars; 42 count++; 43 } 44 45 if (result == Result.FINAL_VALUE) { 46 break; 47 } 48 } else if (result == Result.NO_MATCH) { 49 break; 50 } 51 52 if (numChars >= maxLength) { 53 break; 54 } 55 c = text.nextCodePoint(); 56 if (c == UCharacterIterator.DONE) { 57 break; 58 } 59 ++numChars; 60 result = uct.nextForCodePoint(c); 61 } 62 count_[0] = count; 63 return numChars; 64 } 65 66 @Override 67 public int getType() { 68 return DictionaryData.TRIE_TYPE_UCHARS; 69 } 70 } 71 72
