1 /* GENERATED SOURCE. DO NOT MODIFY. */ 2 // © 2016 and later: Unicode, Inc. and others. 3 // License & terms of use: http://www.unicode.org/copyright.html#License 4 /* 5 ******************************************************************************* 6 * Copyright (C) 2014, International Business Machines Corporation and * 7 * others. All Rights Reserved. * 8 ******************************************************************************* 9 */ 10 package ohos.global.icu.text; 11 12 import java.text.CharacterIterator; 13 14 import ohos.global.icu.impl.Assert; 15 import ohos.global.icu.util.BytesTrie; 16 import ohos.global.icu.util.BytesTrie.Result; 17 18 class BytesDictionaryMatcher extends DictionaryMatcher { 19 private final byte[] characters; 20 private final int transform; 21 BytesDictionaryMatcher(byte[] chars, int transform)22 public BytesDictionaryMatcher(byte[] chars, int transform) { 23 characters = chars; 24 Assert.assrt((transform & DictionaryData.TRANSFORM_TYPE_MASK) == DictionaryData.TRANSFORM_TYPE_OFFSET); 25 // while there is only one transform type so far, save the entire transform constant so that 26 // if we add any others, we need only change code in transform() and the assert above rather 27 // than adding a "transform type" variable 28 this.transform = transform; 29 } 30 transform(int c)31 private int transform(int c) { 32 if (c == 0x200D) { 33 return 0xFF; 34 } else if (c == 0x200C) { 35 return 0xFE; 36 } 37 38 int delta = c - (transform & DictionaryData.TRANSFORM_OFFSET_MASK); 39 if (delta < 0 || 0xFD < delta) { 40 return -1; 41 } 42 return delta; 43 } 44 45 @Override matches(CharacterIterator text_, int maxLength, int[] lengths, int[] count_, int limit, int[] values)46 public int matches(CharacterIterator text_, int maxLength, int[] lengths, int[] count_, int limit, int[] values) { 47 UCharacterIterator text = UCharacterIterator.getInstance(text_); 48 BytesTrie bt = new BytesTrie(characters, 0); 49 int c = text.nextCodePoint(); 50 if (c == UCharacterIterator.DONE) { 51 return 0; 52 } 53 Result result = bt.first(transform(c)); 54 // TODO: should numChars count Character.charCount() ? 55 int numChars = 1; 56 int count = 0; 57 for (;;) { 58 if (result.hasValue()) { 59 if (count < limit) { 60 if (values != null) { 61 values[count] = bt.getValue(); 62 } 63 lengths[count] = numChars; 64 count++; 65 } 66 if (result == Result.FINAL_VALUE) { 67 break; 68 } 69 } else if (result == Result.NO_MATCH) { 70 break; 71 } 72 73 if (numChars >= maxLength) { 74 break; 75 } 76 77 c = text.nextCodePoint(); 78 if (c == UCharacterIterator.DONE) { 79 break; 80 } 81 ++numChars; 82 result = bt.next(transform(c)); 83 } 84 count_[0] = count; 85 return numChars; 86 } 87 88 @Override getType()89 public int getType() { 90 return DictionaryData.TRIE_TYPE_BYTES; 91 } 92 } 93 94 95